Academic literature on the topic 'Mature age study'
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Journal articles on the topic "Mature age study"
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Tkachenko, L. V. "ANALYSIS OF MORTALITY STRUCTURE OF MATURE STRAY DOGS (SECTIONAL STUDY)." Vestnik of Ulyanovsk state agricultural academy 250 (June 25, 2021): 141–47. http://dx.doi.org/10.18286/1816-4501-2021-2-141-147.
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Stray animals are such animals that are left without owner’s care, they are part of society, serving as sources of zooanthroponosis. There are no works devoted to analysis and classification of death causes of stray animals on Altai Territory. Objective of the research is to study mortality structure of stray mature dogs. The objects of research were the corpses of 41 sexually mature stray dogs from the Altai Territory, and kept by volunteers and animal protection organizations in the period 2017-2020. Research methods include registration of an animal; autopsy; photographing; statistical processing and analysis of the obtained data. The results showed that 33% of the studied stray dogs died as a result of the action of toxic substances of unknown nature (poisoning), at the age of 3-4 years and 7-8 years; 22% - infectious diseases, at the age of from 6 months up to 5-6 years old; 15% - dirofilariasis, at the age of 2 years and 4-7 years 4 10% - extensive heart thrombosis, at the age of 1-3 years, 5-6 years and over 10 years; 10% - mechanical injuries (car injuries), at the age of 3-8 years; 7% - mechanical asphyxia, at the age of 5, 6 and 10 years; 2% - cancer, at the age of 2 years. The death causes of stray dogs are the result of the action of toxic substances of unknown nature (poisoning); infectious diseases (plague of carnivores and piroplasmosis); autointoxication (sources: stomach, intestines, liver, pancreas); car injuries; closing of the larynx lumen with a foreign object and liver cancer with metastases.
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Tkachenko, L. V. "ANALYSIS OF MORTALITY STRUCTURE OF MATURE STRAY DOGS (SECTIONAL STUDY)." Vestnik of Ulyanovsk state agricultural academy 250 (June 25, 2021): 141–47. http://dx.doi.org/10.18286/1816-4501-2021-2-141-147.
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Stray animals are such animals that are left without owner’s care, they are part of society, serving as sources of zooanthroponosis. There are no works devoted to analysis and classification of death causes of stray animals on Altai Territory. Objective of the research is to study mortality structure of stray mature dogs. The objects of research were the corpses of 41 sexually mature stray dogs from the Altai Territory, and kept by volunteers and animal protection organizations in the period 2017-2020. Research methods include registration of an animal; autopsy; photographing; statistical processing and analysis of the obtained data. The results showed that 33% of the studied stray dogs died as a result of the action of toxic substances of unknown nature (poisoning), at the age of 3-4 years and 7-8 years; 22% - infectious diseases, at the age of from 6 months up to 5-6 years old; 15% - dirofilariasis, at the age of 2 years and 4-7 years 4 10% - extensive heart thrombosis, at the age of 1-3 years, 5-6 years and over 10 years; 10% - mechanical injuries (car injuries), at the age of 3-8 years; 7% - mechanical asphyxia, at the age of 5, 6 and 10 years; 2% - cancer, at the age of 2 years. The death causes of stray dogs are the result of the action of toxic substances of unknown nature (poisoning); infectious diseases (plague of carnivores and piroplasmosis); autointoxication (sources: stomach, intestines, liver, pancreas); car injuries; closing of the larynx lumen with a foreign object and liver cancer with metastases.
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Zacher, Hannes, and Angelika Bock. "Mature age job seekers: the role of proactivity." Journal of Managerial Psychology 29, no. 8 (November 4, 2014): 1082–97. http://dx.doi.org/10.1108/jmp-05-2012-0158.
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Purpose – In the context of demographic and economic changes, helping mature age job seekers find employment is imperative. The purpose of this paper is to examine mature age job seekers’ proactive personality as a moderator of the relationship between age and job search intensity; and to examine job search self-efficacy as a mediator of this moderation effect. It was hypothesized that the generally negative relationships between age and job search self-efficacy and intensity are weaker among job seekers with a more proactive personality. Design/methodology/approach – In total, 188 job seekers between 40 and 64 years completed an online questionnaire. Data were analyzed using structural equation modeling. Findings – Consistent with previous research, age was negatively related to job search intensity. Proactive personality was positively related to job search intensity and moderated the relationship between age and job search intensity. Extending previous research, proactive personality also positively predicted job search self-efficacy and moderated the relationship between age and job search self-efficacy which, in turn, positively predicted job search intensity. Research limitations/implications – Potential limitations of the study include the cross-sectional design, sample selectivity, and the omission of possibly important control variables. Practical implications – Practitioners, organizations, and societies concerned with helping mature age job seekers find employment could provide additional support to those with a less proactive personality and low job search self-efficacy. Originality/value – This study extends previous research by showing that mature age job seekers’ job search self-efficacy mediates the moderating effect of proactive personality on the relationship between age and job search intensity.
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Hatt, Sue, Arthur Baxter, and Richard Kimberlee. "‘It's Our Last Chance’ — A Study of Completion Rates by Age at an English University." Journal of Adult and Continuing Education 8, no. 1 (November 2002): 88–103. http://dx.doi.org/10.7227/jace.8.1.7.
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Although the UK has one of the highest graduation rates in the world, some groups of students are more likely than others to complete their degree. This article examines the completion rates of mature and younger students on a large undergraduate social science programme at a new university in England in the late 1990s. Drawing on quantitative data and interviews with staff and students, this article compares the reasons why students enter HE, the factors affecting their motivation and attendance and the issues they face if they are to complete the programme. Although younger students have higher rates of completion than ‘matures’, they also account for the majority of the non-completers. Since non-completion is a wasteful process, both groups warrant attention. Students in the younger age groups can find it hard to negotiate the transition to university life and this can lead to non-attendance and the risk of failure. For mature students, the pressures on their time can be acute making it difficult for them to continue if personal circumstances change. As universities have expanded their intake, they need to review their teaching and learning strategies, their assessment regime and their support and guidance systems to ensure that they cater for all groups within a more diverse student body.
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Netto, Claudia Cardoso, Vivian Cristine Correia Vieira, Lizanka Paola Figueiredo Marinheiro, Sherry Agellon, Hope Weiler, and Mário Roberto Maróstica Jr. "Are skeletally mature female rats a suitable model to study osteoporosis?" Arquivos Brasileiros de Endocrinologia & Metabologia 56, no. 4 (June 2012): 259–64. http://dx.doi.org/10.1590/s0004-27302012000400007.
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OBJECTIVE: To analyze if female Wistar rats at 56 weeks of age are a suitable model to study osteoporosis. MATERIALS AND METHODS: Female rats with 6 and 36 weeks of age (n = 8 per group) were kept over a 20-week period and fed a diet for mature rodents complete in terms of Ca, phosphorous, and vitamin D. Excised femurs were measured for bone mass using dual-energy x-ray absorptiometry, morphometry, and biomechanical properties. The following serum mar-kers of bone metabolism were analyzed: parathyroid hormone (PTH), osteocalcin (OC), osteoprotegerin (OPG), receptor activator of nuclear factor Κappa B ligand (RANKL), C-terminal peptides of type I collagen (CTX-I), total calcium, and alkaline phosphatase (ALP) activity. RESULTS: Rats at 56 weeks of age showed important bone metabolism differences when compared with the younger group, such as, highest diaphysis energy to failure, lowest levels of OC, CTX-I, and ALP, and elevated PTH, even with adequate dietary Ca. CONCLUSION: Rats at 26-week-old rats may be too young to study age-related bone loss, whereas the 56-week-old rats may be good models to represent the early stages of age-related changes in bone metabolism.
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Veneranta, Lari, Irma Kallio-Nyberg, Irma Saloniemi, and Erkki Jokikokko. "Changes in age and maturity of anadromous whitefish (Coregonus lavaretus) in the northern Baltic Sea from 1998 to 2014." Aquatic Living Resources 34 (2021): 9. http://dx.doi.org/10.1051/alr/2021007.
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The maturation of anadromous whitefish (Coregonus lavaretus) was analysed from samples taken from commercial coastal fishing in 1998–2014 in the Gulf of Bothnia. Whitefish matured at a younger age from year to year. The proportion of older (5–12 sea years) mature males decreased from 79% to 39% in the northern Gulf of Bothnia (66°N–64°N) and from 76% to 14% in southern (64°N–60°30'N) during the study period. At the same time, the proportion of young males (2–4 sea years) increased. Whitefish matured younger: the proportion of mature fish at age four increased in both the north and south among females (13% → 98%; 6% → 85%) and males (68% → 99%; 29% → 89%). The catch length of four-year-old fish increased during the study period in both sexes. In contrast, the length of six-year-old females decreased from year to year. Sea surface temperatures increased during the study period, and were possibly associated with a decrease in the age of maturation and faster growth.
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O'Shea, S., and C. Stone. "Transformations and self-discovery: mature-age women's reflections on returning to university study." Studies in Continuing Education 33, no. 3 (November 2011): 273–88. http://dx.doi.org/10.1080/0158037x.2011.565046.
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Scott, Catherine, Ailsa Burns, and George Cooney. "Reasons for discontinuing study: The case of mature age female students with children." Higher Education 31, no. 2 (March 1996): 233–53. http://dx.doi.org/10.1007/bf02390446.
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Ersoy, I. E., M. Mendeş, and S. Aktan. "Growth curve establishment for American Bronze turkeys (short communication)." Archives Animal Breeding 49, no. 3 (October 10, 2006): 293–99. http://dx.doi.org/10.5194/aab-49-293-2006.
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Abstract. The purpose of this study was to establish the growth curves parameters of American Bronze turkeys. The weekly body weight changes of male and female turkeys were recorded during 11 to 24 weeks of age. The Richards' growth model fitted the turkey weight and age (week) data. Profile analysis was also applied to weight-age data in order to get more detailed information about the differences in the live weights of male and female turkeys in consecutive weeks. Estimates for mature body weight were found as 9720.40 ± 971.33 g and higher for males than for females as 6029.96 ± 316.55 g. Based on Richards’ model, male turkeys matured more slowly and it was needed that a more time to reach mature body weight than female turkeys. Results of profile analysis supported those results. Estimates for the absolute growth rate, absolute maturing rate and relative growth rate values were higher for females when compared to males. Male turkeys reached the maximum growth rate at 16.30 weeks of age whereas female ones reached the maximum growth rate at 12.85 weeks of age. Live weights of male and female turkeys, when both reached the maximum growth rate, were 3475.61 g and 2156.06 g, respectively. Male turkeys reached 80 % of their mature weights at 24 weeks of age, whereas female ones reached 92% of their mature weight.
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Lim, Jong Mi, and Ok-Hee Cho. "Factors Influencing Career Preparation Behavior of Mature Age Student Nurses." Journal of Korean Academy of Fundamentals of Nursing 28, no. 1 (February 26, 2021): 23–31. http://dx.doi.org/10.7739/jkafn.2021.28.1.23.
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Purpose: This study was done to determine the correlations among grit, social support, career barriers, and career preparation behavior in mature age nursing students, and identify factors influencing their career preparation behavior.Methods: This cross-sectional, descriptive study included 106 undergraduate nursing students aged 25 years or older at the time of entering three universities in Korea. Grit, social support, career barriers, and career preparation behavior were investigated using structured questionnaires. Data analyses included descriptive statistics, independent t-test, one-way ANOVA, Pearson’s correlation analysis, and stepwise multiple regression analysis and were performed with the SAS program (version 9.4).Results: The factors influencing career preparation behavior of mature age nursing students included: persistence of efforts (β=.35, p<.001) and consistency of interests (β=-.21, p=.011) under the sub-domains of grit; informational support (β=.29, p<.001) under the sub-domains of social support; lack of job information (β=-.36, p<.001) and anxiety about the future(β=.28, p=.008) under the sub-domains of career barriers. These variables accounted for approximately 42% of the variance in career preparation behavior.Conclusion: The findings imply that in order to improve the career preparation behavior and lower the career barriers of mature age nursing students, their individual cognitive and psychological characteristics should be considered while providing diverse job information as part of career guidance.
Dissertations / Theses on the topic "Mature age study"
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du, Preez Jan. "Co-constructing self-efficacy narratives : a study of four mature age university students." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/44050/1/Jan_du_Preez_Thesis.pdf.
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This thesis reports on a study in which research participants, four mature aged females starting an undergraduate degree at a regional Australian university, collaborated with the researcher in co-constructing a self-efficacy narrative. For the purpose of the study, self-efficacy was conceptualized as a means by which an individual initiates action to engage in a task or set of tasks, applies effort to perform the task or set of tasks, and persists in the face of obstacles encountered in order to achieve successful completion of the task or set of tasks. Qualitative interviews were conducted with the participants, initially investigating their respective life histories for an understanding of how they made the decision to embark on their respective academic program. Additional data were generated from a written exercise, prompting participants to furnish specific examples of self-efficacy. These data were incorporated into the individual's self-efficacy narrative, produced as the outcome of the "narrative analysis". Another aspect of the study entailed "analysis of narrative" in which analytic procedures were used to identify themes common to the self-efficacy narratives. Five main themes were identified: (a) participants' experience of schooling . for several participants their formative experience of school was not always positive, and yet their narratives demonstrated their agency in persevering and taking on university-level studies as mature aged persons; (b) recognition of family as an early influence . these influences were described as being both positive, in the sense of being supportive and encouraging, as well as posing obstacles that participants had to overcome in order to pursue their goals; (c) availability of supportive persons – the support of particular persons was acknowledged as a factor that enabled participants to persist in their respective endeavours; (d) luck or chance factors were recognised as placing participants at the right place at the right time, from which circumstances they applied considerable effort in order to convert the opportunity into a successful outcome; and (e) self-efficacy was identified as a major theme found in the narratives. The study included an evaluation of the research process by participants. A number of themes were identified in respect of the manner in which the research process was experienced as a helpful process. Participants commented that: (a) the research process was helpful in clarifying their respective career goals; (b) they appreciated opportunities provided by the research process to view their life from a different perspective and to better understand what motivated them, and what their preferred learning styles were; (c) their past successes in a range of different spheres were made more evident to them as they were guided in self-reflection, and their self-efficacious behaviour was affirmed; and (d) the opportunities provided by their participation in the research process to identify strengths of which they had not been consciously aware, to find confirmation of strengths they knew they possessed, and in some instances to rectify misconceptions they had held about aspects of their personality. The study made three important contributions to knowledge. Firstly, it provided a detailed explication of a qualitative narrative method in exploring self-efficacy, with the potential for application to other issues in educational, counselling and psychotherapy research. Secondly, it consolidated and illustrated social cognitive theory by proposing a dynamic model of self-efficacy, drawing on constructivist and interpretivist paradigms and extending extant theory and models. Finally, the study made a contribution to the debate concerning the nexus of qualitative research and counselling by providing guidelines for ethical practice in both endeavours for the practitioner-researcher.
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Campbell, Heather Diane, and n/a. "MOTIVES OF MATURE-AGE INDIVIDUALS FOR PARTICIPATING IN COMPETITIVE SPORTS: A CASE STUDY FOR MASTERS SQUASH." University of Canberra. Sports Studies, 2009. http://erl.canberra.edu.au./public/adt-AUC20091222.155411.
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The purpose of this study was threefold. Primarily it was to identify the underlying motivational influences determining why mature age men and women continue playing sport competitively, long after they have reached their peak performance level. Secondly, the study sought to ascertain whether there was a change in specific temperament attributes, such as competitiveness, as Squash players became older, and whether any changes were restricted primarily to the sporting environment, or did changes pervade other areas ofthe individuals' lives. The third purpose of the study was to design a new measurement instrument for use in effectively identifying the primary motivations of mature age squash participants within Australia.
The research study comprised a multi-system methodology which allowed for triangulation analysis of results. It involved both quantitative and qualitative methodological approaches, with four phases of investigation. The first phase focused on the development of a new motivation measurement instrument, titled Masters Sport Motivation Inventory (MSMI). The second phase involved a Pilot study aimed at implementing the MSMI instrument and evaluating it for validity and reliability, and sampled mature-age participants from nine different sports. The outcomes ofthe Pilot study demonstratedvalidityandreliability ofthe MSMI instrument. The third phase ofthe research comprised the main area ofinvestigation, which was to examine the motivations of Masters squash players in Australia. It used the MSMI instrument to obtain relevant data concerning the motivation of this cohort of sports competitors.The fourth phase comprised in-depth personal interviews from Australian Masters squash players. Interviewees had the opportunity to provide a greater insight into the importance of continued sporting participation into their older adult years. The MSMI data for both the Pilot and Main studies was analysed with the SPSS 15 analysis program. It was determined that there were 12 logical and interpretable motivational factors that were relevant to mature-age sports people and Australian Masters squash players. The results of the quantitative approach generally concurred with the outcomes derived from previous research which has examined the motivations of mature-age athletes, which found that health, enjoyment, fitness and competitiveness were highly relevant motives. In addition, this study extended the
outcomes to include other motives viewed as being important to older athletes' sporting aspirations, such as self-awareness, team, aesthetics, skill, stress, recognition, social, and travel,
The interview information was examined in two ways. Firstly, it was examined manually by the researcher. The material obtained during the interview process was classified according to groups of responses with similarities in contextual meaning, and the descriptive response data were calculated in the form ofmanual frequencies and percentages. Winning was the primary motive/outcome. Interview responses were also examined via an analysis program called Leximancer, and results revealed that differences in responses among mature-age squash players based on gender, age-class and ability level were minimal. Interview results indicated that many Masters squash players in Australia were still highly competitive, still very determined to win their matches, and still very focused on their goals and game plans.
The motives derived from the Masters squash players involved in the qualitative approach generally concurred with the outcomes derived from the quantitative approach, thereby adding consistency and outcome strength to the overall research. The opportunity for mature-age squash participants to elaborate on their feelings, sporting goals and motivations to continue playing their chosen sport enabled a greater depth and wealth ofrelevant information to be examined, and revealed a change in motivational emphasis from health and fitness issues to competitive and win-related issues. The results ofthis research as a whole, in relation to the outcomes obtained from the MSMI instrument, as well as from the personal interviews, differs somewhat from the philosophy of Masters sport, whereby it is assumed and promoted that older athletes primarily participate for fun, enjoyment and social opportunities. The results obtained in this research do not necessarily support this view. Many Australian Masters squash players play to win, and they give their all in an effort to achieve this goal and to reap the pleasure of recognition and rewards for doing so.
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JUNIOR, GERALDO PINTO DE GODOY. "MATURE WOMAN: A STUDY ON THE INFLUENCE OF THE COGNITIVE AGE IN THE ATTITUDE IN RELATION TO FASHION ADVERTISEMENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=16700@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROOs avanços da medicina têm proporcionado aumento da longevidade e melhor qualidade de vida. Pessoas acima de 55 anos percebem-se como tendo idade inferior à sua idade cronológica, engajando-se em atividades não imaginadas há uma década. No caso das mulheres, o interesse por moda mostra-se alto nessa fase. Este estudo procurou investigar a influência da idade cognitiva da mulher madura em sua atitude em relação a anúncios de moda. Utilizando-se fotos de modelos femininos, conduziu-se um survey, com uma amostra de 164 mulheres, entre 55 e 70, anos residentes do Rio de Janeiro. Surgiram evidências de que mulheres maduras se vêem de acordo com sua idade cognitiva e que sua identificação é maior com modelos fotográficos que aparentam ter sua idade cognitiva. Ao se identificarem mais com a modelo, sua atitude positiva em relação à roupa apresentada no anúncio aumenta. Estas descobertas podem ser utilizadas para que empresas direcionem, de modo mais eficaz, não apenas suas campanhas publicitárias para esse mercado, como também o desenvolvimento de produtos e seu posicionamento de marca.
In recent years, advances in medicine have increased life expectancy and quality of life for people over 55. They feel much younger than their actual age and engage in activities that would have been unimaginable a decade ago. In the case of mature women, interest in fashion has also increased significantly. This study aims at investigating the relationship between women’s cognitive age and their emotional responses towards fashion advertising. A survey with 164 women aged 55 to 70 evidenced that mature women´s self-perception is in accordance with their cognitive age and that they identify themselves mostly with photographic models of their own age. In doing so, their positive attitude towards clothes shown by an advertisement also increases. This knowledge could be used by the marketing sector so as to direct more effective publicity campaigns to the market of mature women.
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Schneider, James Clark. "Stereotype Threats and Mature Female Students Entering Higher Education: A Qualitative Study Using Experience Sampling Method." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7740.
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Mature female students encounter a range of challenges, including stereotype threat, which may affect their persistence in academic programs. Research has been conducted on stereotype threat in adult learners, but little research has been done on the impact of stereotype threat on mature female students in higher education. The purpose of this qualitative study using the experience sampling method (ESM) was to investigate how role conflict and social isolation due to age differences affected the learning experiences of mature female students (ages 45-54). The study used a conceptual framework incorporating Steele and Aronson’s stereotype threat theory and the concept of perceived belonging. The research questions explored participants’ use of time and interactions with others to determine the extent to which they may have experienced role conflict and social isolation due to age differences. Using ESM in conjunction with interval-contingent diaries, the study collected data on 5 mature female students enrolled at a national, for-profit undergraduate institution 5 days per week for 4 weeks. Data were analyzed, codes and categories were developed, and themes were identified according to the research questions and diary prompts. Analysis of themes suggested that participants experienced role conflict, struggled with time management, and often felt overwhelmed and exhausted. The themes also indicated that participants interacted favorably with staff and professors but found themselves in conflict with classmates, often as a result of age differences. This study may lead to the development of interventions that can be used to address the unique, diverse needs of mature female students in higher education.
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Paasse, Gail 1957. "Searching for answers in the borderlands : the effects of returning to study on the "classed" gender identities of mature age women students." Monash University, School of Graduate Studies, 2001. http://arrow.monash.edu.au/hdl/1959.1/8908.
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Simoni, Michela. "Age-related white matter changes in patients with TIA and stroke : population-based study on aetiological and prognostic significance." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:d3e55744-5cc1-44e9-a33f-589abbc50c93.
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White matter changes (WMC) seen on CT and MRI brain scans of healthy subjects and of vascular or dementia patients are strongly associated with age. Their pathogenesis is still under debate, and associations with vascular risk factors have varied according to studies. Their prognostic meaning, both in the general population and in stroke patients, is also not completely established. I systematically reviewed the literature on prevalence and associations of WMC and then evaluated CT and MRI scans of the first 8 years of a population-based study of all strokes and TIA in Oxfordshire (OXVASC). In this population I researched sex and age-specific associations between WMC and different types of strokes (TOAST), different components of blood pressure, and possible vascular risk factors. I also looked into their prognostic meaning for stroke recurrence and outcome, cognitive performance and mortality. 1840 patients were assessed by MRI (520) and/or CT (1717). White matter changes were independently associated with the lacunar type of stroke. The association with hypertension was confirmed (using 10 years of pre-morbid blood pressure readings), and it was particularly strong in the younger patients, mainly for diastolic hypertension. There was no association with blood pressure variability and peripheral pulse pressure. Hypercholesterolaemia, diabetes, smoking, ischaemic heart disease, carotid stenosis and atrial fibrillation were not associated with white matter changes. There was also no association with gender. Severe WMC posed a higher risk of disability and cognitive impairment at one year from the stroke, and of death in the following 10 years. This is the first study on white matter changes associations and on their prognostic meaning, to be set in a large population-based cohort of stroke and TIA. I confirmed the association between white matter changes and higher blood pressure, in particular diastolic hypertension. I also showed the association with lacunar type of stroke to be independent from vascular risk factors, and WMC to reduce life expectancy and functional and cognitive outcome of patients with stroke.
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Lucey, Daniel Joseph. "Blended learning : meeting the needs of distance education students." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/78068/1/Daniel_Lucey_Thesis.pdf.
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This thesis involved research into the barriers and enablers that existed for a cohort of mature-aged education support students engaging with blended learning through distance education. The findings that emerged from this research indicated that a flexible model of blended learning is possible in this context. The findings shed light on the experiences of novice technology users' participation in blended learning. The study highlighted the significance of factors such as isolation, technology, communication, connectivity, prior learning, and the growth of self-efficacy that influenced learner engagement.
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Uusimaki, Sirkka-Liisa Marjatta. "Pre-service teacher education and the development of middle school teacher identity : an exploratory study." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/34438/1/Sirkka-Liisa_Uusimaki_Thesis.pdf.
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This research study investigated the factors that influenced the development of teacher identity in a small cohort of mature-aged graduate pre-service teachers over the course of a one-year Graduate Diploma program (Middle Years). It sought to illuminate the social and relational dynamics of these pre-service teachers’ experiences as they began new ways of being and learning during a newly introduced one-year Graduate Diploma program. A relational-ontological perspective underpinned the relational-cultural framework that was applied in a workshop program as an integral part of this research. A relational-ontological perspective suggests that the development of teacher identity is to be construed more as an ontological process than an epistemological one. Its focus is more on questions surrounding the person and their ‘becoming’ a teacher than about the knowledge they have or will come to have. Hence, drawing on work by researchers such as Alsup (2006), Gilligan, (1982), Isaacs, (2007), Miller (1976), Noddings, (2005), Stout (2001), and Taylor, (1989), teacher identity was defined as an individual pre-service teacher’s unique sense of self as a teacher that included his or her beliefs about teaching and learning (Alsup, 2006; Stout, 2001; Walkington, 2005). Case-study was the preferred methodology within which this research project was framed, and narrative research was used as a method to document the way teacher identity was shaped and negotiated in discursive environments such as teacher education programs, prior experiences, classroom settings and the practicum. The data that was collected included student narratives, student email written reflections, and focus group dialogue. The narrative approach applied in this research context provided the depth of data needed to understand the nature of the mature-aged pre-service teachers’ emerging teacher identities and experiences in the graduate diploma program. Findings indicated that most of the mature-aged graduate pre-service teachers came in to the one-year graduate diploma program with a strong sense of personal and professional selves and well-established reasons why they had chosen to teach Middle Years. Their choice of program involved an expectation of support and welcome to a middle-school community and culture. Two critical issues that emerged from the pre-service teachers’ narratives were the importance they placed on the human support including the affirmation of themselves and their emerging teacher identities. Evidence from this study suggests that the lack of recognition of preservice teachers’ personal and professional selves during the graduate diploma program inhibited the development of a positive middle-school teacher identity. However, a workshop program developed for the participants in this research and addressing a range of practical concerns to beginning teachers offered them a space where they felt both a sense of belonging to a community and where their thoughts and beliefs were recognized and valued. Thus, the workshops provided participants with the positive social and relational dynamics necessary to support them in their developing teacher identities. The overall findings of this research study strongly indicate a need for a relational support structure based on a relational-ontological perspective to be built into the overall course structure of Graduate Pre-service Diplomas in Education to support the development of teacher identity. Such a support structure acknowledges that the pre-service teacher’s learning and formation is socially embedded, relational, and a continual, lifelong process.
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Mattsson, Lars. "On the Winds of Carbon Stars and the Origin of Carbon : A Theoretical Study." Doctoral thesis, Uppsala universitet, Astronomi och rymdfysik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-99593.
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Carbon is the basis for life, as we know it, but its origin is still largely unclear. Carbon-rich Asymptotic Giant Branch (AGB) stars (carbon stars) play an important rôle in the cosmic matter cycle and may contribute most of the carbon in the Galaxy. In this thesis it is explored how the dust-driven mass loss of these stars depends on the basic stellar parameters by computing a large grid of wind models. The existence of a critical wind regime and mass-loss thresholds for dust-driven winds are confirmed. Furthermore, a steep dependence of mass loss on carbon excess is found. Exploratory work on the effects of different stellar metallicities and the sizes of dust grains shows that strong dust-driven winds develop also at moderately low metallicities, and that typical sizes of dust grains affect the wind properties near a mass-loss threshold. It is demonstrated that the mass-loss rates obtained with the wind models have dramatic consequences when used in models of carbon-star evolution. A pronounced superwind develops soon after the star becomes carbon rich, and it therefore experiences only a few thermal pulses as a carbon star before the envelope is lost. The number of dredge-up events and the thermal pulses is limited by a self-regulating mechanism: each thermal pulse dredges up carbon, which increases the carbon excess and hence also the mass-loss rate. In turn, this limits the number of thermal pulses. The mass-loss evolution during a thermal pulse (He-shell flash) is considered as an explanation of the observations of so-called detached shells around carbon stars. By combining models of dust-driven winds with a stellar evolution model, and a simple hydrodynamic model of the circumstellar envelope, it is shown that wind properties change character during a He-shell flash such that a thin detached gas shell can form by wind-wind interaction. Finally, it is suggested that carbon stars are responsible for much of the carbon in the interstellar medium, but a scenario where high-mass stars are major carbon producers cannot be excluded. In either case, however, the carbon abundances of the outer Galactic disc are relatively low, and most of the carbon has been released quite recently. Thus, there may neither be enough carbon, nor enough time, for more advanced carbon-based life to emerge in the outer Galaxy. This lends some support to the idea that only the mid-part of the Galactic disc can be a “Galactic habitable zone”, since the inner parts of the Galaxy are plagued by frequent supernova events that are presumably harmful to all forms of life.
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PAPA, GIULIA. "Study of airborne particulate matter (PM) contaminating the honey bee Apis mellifera Linnaeus, 1758 and bee products." Doctoral thesis, Università Cattolica del Sacro Cuore, 2021. http://hdl.handle.net/10280/94210.
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Apis mellifera Linnaeus (1758) è un insetto eusociale conosciuto in tutto il mondo sia per la produzione di miele sia per il suo ruolo di impollinatore, uno dei servizi ecosistemici fondamentali per la biodiversità del pianeta. Durante la sua attività di foraggiamento, l’ape è esposta agli inquinanti ambientali tra cui il particolato atmosferico aerodisperso (PM). Il particolato atmosferico può depositarsi sul corpo dell’insetto e infine contaminare anche i prodotti apistici come polline e miele. Il PM può avere diverse dimensioni (es. PM10, PM2.5, PM0.1), composizione chimica, morfologia e fonti di emissione (naturale o antropica).
Nel presente elaborato di tesi, tecniche di microscopia elettronica a scansione (SEM-EDX) sono state utilizzate per caratterizzare la contaminazione da PM di origine antropica del corpo dell’ape e dei suoi prodotti (Capitolo 2 e Capitolo 3) e analisi molecolari per studiare gli eventuali effetti sub-letali sul microbiota intestinale di api esposte ai PM per via orale (Capitolo 4).Apis mellifera Linnaeus (1758) order Hymenoptera family Apidae, is a eusocial insect widely known for its role in pollination, a fundamental ecosystem service for plant biodiversity and ultimately for the planet. During flight and foraging activity, the honey bee can collect airborne particulate matter (PM) on their own body, especially on the forewings, and can also contaminate bee products as pollen and honey. Particulate matter can originate from natural or anthropic sources, and is characterised by size (e.g., PM10, PM2.5, PM0.1), chemical composition, and morphology. In this thesis, honey bee, pollen and honey were used as bioindicator of PM – from coarse to ultrafine – in industrial areas of the Po Valley, Italy (Chapter 2 and Chapter 3). The (sub-lethal) effects of Titanium dioxide – a widespread airborne PM1 pollutant – on the honey bee through oral exposure was then investigated (Chapter 4). The technique used to analyse the PM contaminating bees and bee products is the scanning electron microscopy (SEM) coupled with X-ray spectrometer (EDX). EDX spectra allowed us to obtain chemical information from specimens, while backscattered-electron (BSE) imaging and elemental mapping provided both compositional and topographic information of PM.
Books on the topic "Mature age study"
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Farkas, Janice I. Lifetimes in chemistry: A study of members ages 50 to 69 : a report on the American Chemical Society's mature career chemists study. Washington, DC: Dept. of Career Services, American Chemical Society, 2000.
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Beeson, Luana J. Midlife pregnancy, a comparative study of the parental attitudes of the mature primigravida and the younger primigravida: Getting Fucked Early and Later and Living with the CONSEQUENCES! Cuntsville, NY: Big Fat Cocks Alive, 1988.
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Diggle, Martin. Teaching the mature rider. London: J.A. Allen, 1993.
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Nigro, Giampiero, ed. La moda come motore economico: innovazione di processo e prodotto, nuove strategie commerciali, comportamento dei consumatori / Fashion as an economic engine: process and product innovation, commercial strategies, consumer behavior. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/978-88-5518-565-3.
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The study of the textile sector has always been central to economic history: from reconstructions of the dynamic growth in the medieval wool industry, to the rise of silk and light and mixed fabrics in the modern era, to the driving role of cotton in the industrialisation process. Although the dynamics of textile manufacturing are closely linked to the transformations of fashion, economic history has long neglected its role as a factor in economic change, treating it primarily as a kind of exogenous catalyst. This book makes a decisive contribution to the understanding of a fundamental transformation, the consequences of which are projected into contemporary society, but which matured in pre-industrial times: the advent of fashion.
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Dessì, Giuseppe, and Raffaello Delogu. Lettere 1936-1963. Edited by Monica Graceffa. Florence: Firenze University Press, 2012. http://dx.doi.org/10.36253/978-88-6655-162-1.
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Author of Architettura del medioevo in Sardegna which won him the Premio Nazionale Olivetti in 1956, Raffaello Delogu was an art historian and Commissioner for Antiquities and Monuments in Sardinia, Abruzzo and Sicily. His correspondence with one of the most eminent Italian writers of the second half of the twentieth century, as transcribed and lavishly annotated here by Monica Graceffa, reveals him not only as a committed intellectual devoted to the study of ancient and modern art, but also as a caustic and playful friend. His dialogue with Giuseppe Dessí commenced in their youth, when Dessí was an amateur painter on the way to maturity, who instead rapidly developed into a mature writer and attentive connoisseur of all forms of art. In addition to their studies and mutual friends (including Claudio Varese and Maria Lai), they also shared an interest in painting and in what Dessí was experiencing (his moves, his political passion) and what he was writing (fiction, drama, essays); important in this regard are the letters touching on the collaboration of both on the Sardinian issue of Pietro Calamandrei's «Il Ponte».
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E'kov, Evgeniy. The origin and evolution of the Universe. ru: INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1852616.
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The monograph examines a wide range of problems related to the origin and development of the Universe. An overview of the history of the study of astronomy from Stone Age observatories to modern space telescopes is given. The theories of the origin of the Universe are analyzed, evidence of the Big Bang, the expansion of the Universe, the cosmic effects of dark energy and dark matter are given. The origin and causes of the existence of planets, stars, nebulae, galaxies and other cosmic bodies in the Universe are considered. A large place is given to the analysis of the origin and development of the Solar system. The origin and functioning of the Sun, planets and other objects located in its gravitational field are considered. Among the planets of the Solar System, the greatest attention is paid to the Earth and the analysis of the factors that ensured the emergence and maintenance of various forms of life on it.
For a wide range of readers interested in the origin and evolution of the universe. It can be useful for students, postgraduates and teachers of physics and mathematics universities.
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Teaching the Mature Rider. J a Allen & Co Ltd, 1999.
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Sedek, Grzegorz, Thomas Hess, and Dayna Touron, eds. Multiple Pathways of Cognitive Aging. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197528976.001.0001.
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The study of aging and cognition has grown tremendously over the past 50 years, developing from a field dominated by experimentally based information-processing traditions to one represented by a more mature approach both conceptually and methodologically. A quick examination of relevant research over the last 10 years reveals a growth in integrative approaches incorporating behavioral, neuropsychological, and social information. In addition, the concurrent recognition of limitations associated with simple cross-sectional age-group comparisons along with the use of more complex methods has resulted in the development of increasingly sophisticated research designs and analytic tools focused on understanding a multitude of potential mediators and moderators of cognitive change. This all has led away from a monolithic—often negative—view of cognitive aging to one that is more nuanced and sensitive to contextual factors. This recent shift in the psychology of aging discipline from describing cognitive aging in terms of limitations into one focused on understanding the factors associated with adaptive functioning in later life is a prime inspiration for the present volume. Thus, an emphasis here is on understanding both the factors underlying individual differences in trajectories of change in cognitive functioning in later life and the nature of compensatory mechanisms developed by most successful and active middle-aged and older adults through their experiences in dealing with complex tasks. This includes the consideration of motivational factors as a driver of both cognitive change and adaptive functioning. The 15 contributions offer unique insights and highlight innovative methodological approaches that have been used to study these issues.
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Kelly, Gillian. Tyrone Power. Edinburgh University Press, 2021. http://dx.doi.org/10.3366/edinburgh/9781474452946.001.0001.
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One of the most popular actors of the Classical Hollywood period, Tyrone Power’s appeal was initially based around his outstanding beauty, his looks remaining key to his star persona throughout his 25-year career and almost 50 films, most of which were made at Twentieth Century-Fox, before his untimely death in 1958 at the age of 44. Although Power was one of Classical Hollywood’s major stars of the pre- and post-war years, he remains academically neglected. This book presents the first substantial academic study of Power and employs a range of approaches, including stardom and genre theory, to reappraise his career from various angles including gender, genre and image. Textual analysis coincides with discussions of Power’s multi-layered performances in a variety of genres while engaging with industry systems, specifically Twentieth Century-Fox, his home studio for almost two decades, and situates Power’s performances within the contexts of industry regulations, such as the Production Code, and industry technological advances, such as CinemaScope. A key historical figure of American cinema, Power’s significant career trajectory from pretty boy ‘pin-up’ in the 1930s to mature, virile action-adventure star at the close of his career demonstrates the natural progression of a ‘normal’ life and his ability to remain relevant across the decades. This book is part of a welcome new wave of scholarly studies on overlooked stars, such as Power, whose careers were initially based around their looks but who maintained a career as they aged.
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Wagner, Bryan. Historical Method In The Study of Law And Culture. Edited by Markus D. Dubber and Christopher Tomlins. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198794356.013.11.
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This chapter explores some of the ways that legal historical research has been conditioned by the concept of culture. It argues for the importance of understanding key terms of analysis in light of their intellectual history. No matter how we draw the distinction between law and culture, legal historical research becomes skewed when we presume that we are able to distinguish law from culture without attending to the intellectual and institutional history that made law and culture understandable as opposed entities separated into distinct domains. Legal historians must proceed inductively, but they also need to expand their analysis dialectically through a genealogy that conceives law and culture not as natural kinds but as inherited ideas.
Book chapters on the topic "Mature age study"
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Fujii, Takahiro, and Yoshikazu Nakada. "Near-Infrared Monitoring to Study the Transition from AGB to Post-AGB Stars." In Mass-Losing Pulsating Stars and their Circumstellar Matter, 221–22. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0139-7_44.
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Benacchio, Rosanna, and Han Steenwijk. "La Crusca come fonte lessicografica in area dalmato-croata: la copia padovana del Vocabolario di tre nobilissimi linguaggi di G. Tanzlingher-Zanotti (1651-1732)." In Biblioteca di Studi Slavistici, 25–34. Florence: Firenze University Press, 2019. http://dx.doi.org/10.36253/978-88-6453-672-9.05.
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The Vocabolario di tre nobilissimi linguaggi, produced by Ivan Tanzlingher-Zanotti between the latter half of the 17th and the beginning of the 18th century, currently exists in four manuscript versions: one is located in Zagreb, another in London, a third in Padova, and the fourth discovered only recently in Zadar. We focus on the Padova manuscript, which represents Tanzlingher’s mature work, to show that it differs importantly from other lexicographical works originating in 17th-century Dalmatia: while those are based on Latin models, here Tanzlingher turns for the first time to the Crusca Dictionary (Vocabolario degli Accademici della Crusca).
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Benacchio, Rosanna, and Han Steenwijk. "La Crusca come fonte lessicografica in area dalmato-croata: la copia padovana del Vocabolario di tre nobilissimi linguaggi di G. Tanzlingher-Zanotti (1651-1732)." In Biblioteca di Studi Slavistici, 25–34. Florence: Firenze University Press, 2019. http://dx.doi.org/10.36253/978-88-6453-910-2.05.
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The Vocabolario di tre nobilissimi linguaggi, produced by Ivan Tanzlingher-Zanotti between the latter half of the 17th and the beginning of the 18th century, currently exists in four manuscript versions: one is located in Zagreb, another in London, a third in Padova, and the fourth discovered only recently in Zadar. We focus on the Padova manuscript, which represents Tanzlingher’s mature work, to show that it differs importantly from other lexicographical works originating in 17th-century Dalmatia: while those are based on Latin models, here Tanzlingher turns for the first time to the Crusca Dictionary (Vocabolario degli Accademici della Crusca).
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Ghini, Giuseppe. "I dolori del giovane Čechov. Considerazioni filologiche sui racconti giovanili." In Biblioteca di Studi Slavistici, 147–55. Florence: Firenze University Press, 2019. http://dx.doi.org/10.36253/978-88-6453-910-2.17.
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The article addresses textual decisions made by Čechov’s editors in publishing his early short stories. We demonstrate that choices made by other editors and translators has depended crucially on the configuration of his texts found in academic editions of Čechov’s Complete Works. Specifically, in the volumes that these editions devote to the young Čechov, editors place what are in fact the first versions of these short stories in the critical appendix, while furnishing as the featured examples of these texts’ versions that Čechov had reviewed and retouched for collections published during his lifetime. As a result, works of the “young Čechov” are often actually works of the “mature Čechov”, a situation that has led to a worldwide misunderstanding.
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Arkadiev, Peter. "Borrowed preverbs and the limits of contact-induced change in aspectual systems." In Biblioteca di Studi Slavistici, 1–21. Florence: Firenze University Press, 2017. http://dx.doi.org/10.36253/978-88-6453-698-9.03.
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I survey cases of contact-induced influence of Slavic and Baltic systems of prefixal perfectivization on Yiddish, Romani, Livonian and Istroromanian. I show that, although both matter and pattern borrowing of entire systems of Slavic or Baltic verbal prefixes is attested, grammatical aspectual categories similar to those of the donor languages do not arise in the contact languages, or develop in a way distinct from the donor languages (as in Istroromanian). This indicates that abstract grammatical oppositions such as “Slavic-style” aspect are immune to direct transfer in language contact.
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Benelli, Caterina. "Memorie autobiografiche come patrimonio di comunità." In Studi e saggi, 65–75. Florence: Firenze University Press, 2019. http://dx.doi.org/10.36253/978-88-5518-009-2.09.
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We live in a historical period in which it is necessary and urgent to know and relate to stories. Today, the social function of memory is stronger and more evident than ever. The concept of memory, as well as that of recollection, is widely used, but those who resort to it are not always able to fully grasp its meaning. As a matter of fact, the educational function of memory is also expressed through narration. There is no narration and writing of oneself that does not bring within the testimony of a historical time, of a social group and of a precise epoch that reveals unusual nuances and situations, eager to be discovered and to become part of the social heritage. The oral and written narration allows narrators to feel part of a community, to feel in a "warm" place, in a comfortable area and part of a community rich in mutual interest and able to guarantee the rights of all and a reciprocal recognition. Addressing the question of the memory of a community in an era of fragility, of borders, of spaces shared more and more virtually and less physically, means to contrast isolation and the relational distance between people. Life stories provide us with descriptions and observations of how we live in a place, in a territory, in a family, in a school, in a company, in any situation in which human beings have exchanged stories and have learned from each other. The intent to collect the memories of the community, through life stories, autobiographies, arises from the need to look at the traces left by those who preceded us to better understand and face the future, that is, to pay attention to micro-stories. This contribution aims at reflecting on the educational and social value of autobiographies as important instruments for observation, investigation, analysis and restitution of new insights on the community through the educator’s role as a facilitator with autobiographical skills.
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Wiltshier, Peter. "Informed developments for a sustainable community: an English case study in renewal and rejuvenation." In Tourism planning and development in Western Europe, 8–19. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781800620797.0001.
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Abstract This chapter offers a critical analysis of practices adopted for the implementation of sustainable development goals in the English Midlands. Through the lenses of various discourses, this case study epitomizes a long-held belief in the positive outcomes of rejuvenation and regeneration following the decline in manufacturing and extractive industry that occurred in the 1980s. Several evaluations are performed, such as relational discourse, structuration, endogeny, stakeholders and structure agency/actor networks, and recommendations are provided for any destination, especially those more mature places that need skills, capacity and resources to effect change for future welfare and an enduring legacy.
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Dhang, Partho, Philip Koehler, Roberto Pereira, and Daniel D. Dye II. "Flies." In Key questions in urban pest management: a study and revision guide, 39–46. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781800620179.0005.
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Abstract This book chapter discusses flies. Filth-breeding flies are usually broken down by the pest management industry into large flies and small flies. The most common fly is the house fly, and its larvae develop in farm animal manure and decaying plant material. It is important to understand the conditions where filth-breeding fly larvae develop in order to control them in urban settings. Some of the large flies of importance are the house fly, blow fly and flesh fly. Small flies are sometimes called gnats and develop in places like drains, residues of organic matter and food waste. Other fly larvae, like blow flies and flesh flies, develop in decaying meat, dead animals, and high protein decaying waste. Apart from houseflies, the most important flies to the urban pest management industry are the filth-breeding flies. With livestock and poultry production being concentrated into small areas near urban centers, house flies can develop in manure piles and migrate into residences and commercial establishments. The filth-breeding flies are considered very important disease transmitting flies throughout most parts of the world. The food source for filth-breeding fly larvae is usually decaying plant and animal matter. They pick up disease organisms on their bodies or orally, and then move them to human food by contact with their contaminated bodies or by regurgitation of pathogens. The ability of adult flies to move rapidly from decaying plant and animal materials make them important mechanical disease vectors. The important pathogens mechanically transmitted by flies are food poisoning bacteria (Shigella, Salmonella, E. coli) and cholera.
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Dhang, Partho, Philip Koehler, Roberto Pereira, and Daniel D. Dye II. "Sporadic pests." In Key questions in urban pest management: a study and revision guide, 93–99. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781800620179.0012.
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Abstract This book chapter discusses sporadic pests. Other insects like thrips, leafhoppers, brown marmorated stink bugs, boxelder bugs and many other beetles that invade structures are huge problems for customers, but very difficult to prevent or control. Sporadic pests are usually insects or other arthropods that people in frequently encounter or that live and breed outside and then enter a building in large numbers. Many times, people are not familiar with these pests and think they may cause significant damage to their structures or endanger them by stinging or biting. The key to solving problems with sporadic pests is to determine the source and cause of the problem. Other sporadic pests originate in decaying organic matter on the ground. Cicada killer wasps, umbrella wasps, and velvet ants are examples of ones that people may encounter in urban areas. Although these sporadic pests may be "minor" pests to the pest management technician, they can be considered a huge problem to the customer. For instance, millipedes have mass migrations from their breeding grounds when weather or soil conditions change.
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Deszczyński, Bartosz. "Developing the Relationship Management Upper Mid-Range Theory." In Firm Competitive Advantage Through Relationship Management, 159–216. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67338-3_5.
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AbstractThis chapter presents the final proposal of the RM maturity model and proposes a robust framework for the upper RM mid-range theory. The first section synthesizes and explains the mutual connections of distinct RM activities and approaches of an RM-mature firm. A quick test for RM maturity is proposed. The second section introduces the notion of an RM niche, which is needed to explain why moderate proficiency in RM yields no significant advantages and why the relationship between what a company does in terms of RM and achieving a sustainable competitive advantage is highly curvilinear. The universal factors that determine the size of an RM niche and thus the size and scope of RM-mature firms are proposed and discussed. The third section provides eight examples of companies illustrating different facets of RM ‘in motion’ and serves as supplementary qualitative material to study the diverse challenges in managing relationships.
Conference papers on the topic "Mature age study"
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Dobrovská, Dana, and Monika Hřebačková. "ENCOURAGING MATURE AGE STUDENTS TO STUDY ENGLISH." In 14th International Technology, Education and Development Conference. IATED, 2020. http://dx.doi.org/10.21125/inted.2020.0209.
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Permyakova, Margarita, Olga Vindeker, and Tat’yana Smorkalova. "Life Satisfaction and Happiness of Russians at a Mature Age." In Russian Man and Power in the Context of Dramatic Changes in Today’s World, the 21st Russian scientific-practical conference (with international participation) (Yekaterinburg, April 12–13, 2019). Liberal Arts University – University for Humanities, Yekaterinburg, 2019. http://dx.doi.org/10.35853/ufh-rmp-2019-sp04.
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The article describes the results of the empirical study into sociodemographic correlates and subjective correlates of happiness. The relevance of the study is determined by the fact that the modern world places exorbitant, often conflicting requirements (information-driven, need and motive-based, value-oriented, etc.) on the individual. Our study aimed to define the linkage between the happiness of mature Russians and their satisfaction with different aspects of life. We formed the hypothesis of a connection between happiness and satisfaction with the job, material situation, health, proper rest, inter-spousal relations, and relationships with their children and friends. The results revealed that the feelings of happiness are connected with both objective socio-demographic indicators and the level of satisfaction with different life aspects. Happiness positively correlates with the number of children in a family and income, and also with overall life satisfaction. With age, a subjective sense of happiness “fades” a bit, and the respondents estimate happiness slightly lower (it is more characteristic of the female part of the sample). Men and women do not differ in the level of being happy but there exist some peculiarities in the linkage of happiness with such factors as marital status (being married) and the number of children – unlike men, for women these correlations are statistically significant. Also, men, compared to women, are more satisfied with the material situation and inter-spousal relations and less satisfied with their relations with friends. In general, the obtained results complement the data published in academic literature. Thus, it was found that not all factors considered as predictors of happiness in the public mind correlate with the feelings of happiness. For instance, it was revealed that such an essential factor of material wellbeing as homeownership has nothing to do with a sense of happiness: the respondents with and without own homes are equally happy
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Miller, Kristin S., Brianne K. Connizzo, Elizabeth Feeney, and Louis J. Soslowsky. "Collagen Fiber Re-Alignment and Mechanical Properties in a Mouse Supraspinatus Tendon Model: Examining Changes With Age and Location." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80017.
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One postulated mechanism of tendon structural response to mechanical load is collagen fiber re-alignment. Recently, where collagen fiber re-alignment occurs during a tensile mechanical test has been shown to vary by tendon age and location in a postnatal developmental mouse supraspinatus tendon (SST) model [1]. It is thought that as the tendon matures and its collagen fibril network, collagen cross-links and collagen-matrix interactions develop, its ability to respond quickly to mechanical stimuli hastens [1]. Additionally, the insertion site and midsubstance of postnatal SST may develop differently and at different rates, providing a potential explanation for differences in fiber re-alignment behaviors at the insertion site and midsubstance at postnatal developmental time points [1]. However, collagen fiber re-alignment behavior, in response to mechanical load at a mature age and in comparison to developmental ages, have not been examined. Therefore, the objectives of this study are to locally measure: 1) fiber re-alignment during preconditioning and tensile mechanical testing and 2) to compare local differences in collagen fiber alignment and corresponding mechanical properties to address tissue response to mechanical load in the mature and postnatal developmental mouse SST. We hypothesize that 1) 90 day tendons will demonstrate the largest shift in fiber re-alignment during preconditioning, but will also re-align during the toe- and linear-regions. Additionally, we hypothesize that 2) mechanical properties and initial collagen fiber alignment will be greater in the midsubstance of the tendon compared to the tendon-to-bone insertion site at 90 days, 3) that mechanical properties will increase with age, and that 4) collagen fiber organization at the insertion site will decrease with age.
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Peiffer, Véronique, Ethan M. Rowland, Stephanie G. Cremers, Peter D. Weinberg, and Spencer J. Sherwin. "Age-Related Differences in Haemodynamics of the Rabbit Aorta and Comparison With Average Maps of Atherosclerotic Lesion Prevalence." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80310.
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The focal occurrence of atherosclerotic lesions around branching points and in curved vessels has led to the hypothesis that haemodynamics plays an important role in the development of the disease. The spatial distribution of atherosclerosis is also age-dependent in humans and rabbits [1]; detailed maps of disease prevalence in aortas of immature and mature rabbits were presented recently [2]. Vincent et al. [3] applied computational fluid dynamics to study blood flow in the aorta of a mature rabbit, but they did not investigate age-dependent effects. The purpose of the present study was to quantify differences in aortic haemodynamics between immature and mature rabbits, and to compare averaged distributions of the flow-related wall shear stress with maps of disease prevalence. As blood flow is heavily dependent on vessel geometry, the shapes of the aorta in the two age groups were also compared.
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Gannon, A. R., and D. J. Kelly. "The Changing Depth Dependant Properties of Articular Cartilage During Postnatal Development." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14514.
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During skeletal development and maturation compositional and architectural changes occur in articular cartilage. Specifically, the collagen architecture changes from a predominantly isotropic structure in immature articular cartilage to a mature arcade-like zonal structure first described by Benninghoff (1925)1,2,3. The goal of this study was to elucidate how the structure and composition of articular cartilage change during postnatal development and maturation and to relate this to the mechanical properties of the tissue, focusing in particular on how the key superficial region of the tissue adapts with age. To this end articular cartilage from a variety of age groups (one month old-immature, one year old-skeletally mature and three years old-fully mature) were subjected to increasing levels of strain. Local levels of deformation in the tissue were determined by fluorescently labelling and imaging cells that acted as fiducial markers. This enabled the local levels of strain and hence tissue mechanical properties to be determined with age and skeletal maturity.
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Earle, Kathryn. "Reference: Product Categories in the Digital Age." In Charleston Library Conference. Purdue Univeristy, 2020. http://dx.doi.org/10.5703/1288284317139.
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In September of 2016, Bloomsbury Publishing Plc launched a new division charged with creating digital resources for the academic library market. A number of these have Reference at their core. This paper outlines in brief the logic for creating the new division and the role of Reference within the resources. It then summarizes research we have undertaken since the division’s inception to establish how ‘product categories’ (ie, encyclopedias, monographs, images etc) are valued by academics and librarians, the aim of which is to create products that are user-focused. And finally this paper provides a brief case study of our most mature resource, The Berg Fashion Library, to ascertain how actual usage compares with how product categories are rated in the research.
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Bleive, Alise, Janis Liepins, and Kaspars Liepins. "Internal decay assessment using drilling resistance in mature common alder (Alnus Glutinosa (L.) Gaertn.) Stands." In Research for Rural Development 2022 : annual 28th international scientific conference proceedings. Latvia University of Life Sciences and Technologies, 2022. http://dx.doi.org/10.22616/rrd.28.2022.005.
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The occurrence of wood decay in common alder stems (Alnus glutinosa (L.) Gaertn.) was studied based on data obtained in seven matured stands in Latvia age ranging from 65 to 122 years. The study was intended as a pilot study to test the possible use of nondestructive micro-drill (Rinntech Resistograph® R650) for detection of the different stages of wood decay within common alder stems. The drilling profiles were visually compared with the wood samples obtained from increment borer or cross-cut sections at actual drilling height. The study confirmed initially proposed hypothesis that drilling profiles obtained using the Resistograph enabled the diagnosis of the common alder stem health condition. Wood decay stages – spongy rot and cavity can be detected successfully by the Resistograph; however, this non-destructive method does not detect discoloration in the wood, which is the earlier stage of wood decay. We found significant (p<0.05) positive correlation between decay occurrence and some of examined forest stand characteristics such as mean stand diameter, stand age and mean tree volume. The tree inspection showed that the preservation of old common alder stands can lead to a significant loss of wood quality. Based on this pilot study, we conclude that if the economic interests are prioritized in management of studied stands, the reduction of actual harvesting age of the common alder stands have to be considered.
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Jarassova, Tolganay, and Mehmet Altunsoy. "Organic Geochemical Characteristics of Core Samples from Central Primorsk-Emba Province, Precaspian Basin, Kazakhstan." In SPE Annual Caspian Technical Conference. SPE, 2021. http://dx.doi.org/10.2118/207044-ms.
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Abstract The Primorsk-Emba province is one of the main oil and gas region of the Precaspian basin. The resources of the Primorsk-Emba oil and gas region range from 5 to 12 billion tons of oil and from 2 to 6 trillion m³ of natural gas. This study primarily concentrates on investigating the organic geochemistry and petroleum geology characteristics of sedimentary units that generated oil in the central Primorsk-Emba province. 20 core samples taken from the Jurassic units in the western part of the study area are characterized by organic matter amount, hydrocarbon production potential, type of organic matter, maturity of organic matter. According to the Rock-Eval results Jurassic aged rocks generally have a petroleum potential ranging from weak to excellent, the organic matter is between Type II (oil prone), Type II-III (gas-oil prone) and Type III (gas prone), and the degree of maturation is immature-mature stage. Oil extracts were characterized by geochemical methods including Gas Chromatography (GC) and Gas Chromatography–Mass Spectrometry (GC–MS). n-alkanes and isoprenoids were evaluated by High-Resolution Gas Chromatography (GC-HR), aromatic hydrocarbons were evaluated by Low Thermal Mass Gas Chromatography (GC-LTM), terpanes (hopanes), steranes / diasteranes and aromatic hydrocarbons were evaluated by Gas Chromatography-Mass Spectrometry (GC-MS). The GC and GC-MS data obtained, it has been determined whether the paleoenvironment characteristics of the study area, hydrocarbon potential, type of kerogen, maturity level of organic matter and whether it is affected by biodegradation. Distribution of n-alkanes in the GC showed that no biodegradation was observed in analyzed samples, source rock deposited in a marine environment under reducing conditions and an organic matter that occurred were generated by marine carbonates. Based on maturity parameters, studied oils are mature and located on the oil generation window. According to biomarker age parameters C28 / C29 and norcholestane (NCR)/nordiacholestane (NDR) samples are generally Mesozoic (Triassic-Jurassic- Cretaceous) origin, nevertheless there are also levels corresponding to the Paleozoic (Permian) late stages.
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Jarassova, Tolganay, and Mehmet Altunsoy. "Organic Geochemical Characteristics of Core Samples from Central Primorsk-Emba Province, Precaspian Basin, Kazakhstan." In SPE Annual Caspian Technical Conference. SPE, 2021. http://dx.doi.org/10.2118/207044-ms.
Full textAbstract:
Abstract The Primorsk-Emba province is one of the main oil and gas region of the Precaspian basin. The resources of the Primorsk-Emba oil and gas region range from 5 to 12 billion tons of oil and from 2 to 6 trillion m³ of natural gas. This study primarily concentrates on investigating the organic geochemistry and petroleum geology characteristics of sedimentary units that generated oil in the central Primorsk-Emba province. 20 core samples taken from the Jurassic units in the western part of the study area are characterized by organic matter amount, hydrocarbon production potential, type of organic matter, maturity of organic matter. According to the Rock-Eval results Jurassic aged rocks generally have a petroleum potential ranging from weak to excellent, the organic matter is between Type II (oil prone), Type II-III (gas-oil prone) and Type III (gas prone), and the degree of maturation is immature-mature stage. Oil extracts were characterized by geochemical methods including Gas Chromatography (GC) and Gas Chromatography–Mass Spectrometry (GC–MS). n-alkanes and isoprenoids were evaluated by High-Resolution Gas Chromatography (GC-HR), aromatic hydrocarbons were evaluated by Low Thermal Mass Gas Chromatography (GC-LTM), terpanes (hopanes), steranes / diasteranes and aromatic hydrocarbons were evaluated by Gas Chromatography-Mass Spectrometry (GC-MS). The GC and GC-MS data obtained, it has been determined whether the paleoenvironment characteristics of the study area, hydrocarbon potential, type of kerogen, maturity level of organic matter and whether it is affected by biodegradation. Distribution of n-alkanes in the GC showed that no biodegradation was observed in analyzed samples, source rock deposited in a marine environment under reducing conditions and an organic matter that occurred were generated by marine carbonates. Based on maturity parameters, studied oils are mature and located on the oil generation window. According to biomarker age parameters C28 / C29 and norcholestane (NCR)/nordiacholestane (NDR) samples are generally Mesozoic (Triassic-Jurassic- Cretaceous) origin, nevertheless there are also levels corresponding to the Paleozoic (Permian) late stages.
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"Understanding Online Learning Based on Different Age Categories." In InSITE 2019: Informing Science + IT Education Conferences: Jerusalem. Informing Science Institute, 2019. http://dx.doi.org/10.28945/4253.
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[This Proceedings paper was revised and published in the 2019 issue of Journal of Information Technology Education: Research, Volume 18] Aim/Purpose: To understand readiness of students for learning in online environments across different age groups. Background: Online learners today are diverse in age due to increasing adult/mature students who continue their higher education while they are working. Understanding the influence of the learners’ age on their online learning experience is limited. Methodology: A survey methodology approach was followed. A sample of one thousand nine hundred and twenty surveys were used. Correlation analysis was performed. Contribution: The study contributes by adding to the limited body of knowledge in this area and adds to the dimensions of the Online Learning Readiness Survey additional dimensions such as usefulness, tendency, anxiety, and attitudes. Findings: Older students have more confidence than younger ones in computer proficiency and learning skills. They are more motivated, show better attitudes and are less anxious. Recommendations for Practitioners: Practitioners should consider preferences that allow students to configure the learning approach to their age. These preferences should be tied to the dimensions of the online learning readiness survey (OLRS). Recommendations for Researchers: More empirical research is required using OLRS for online learning environments. OLRS factors are strong and can predict student readiness and performance. These are opportunities for artificial intelligence in the support of technology-mediated tools for learning.
Reports on the topic "Mature age study"
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Pinet, N., O. H. Ardakani, J. Cesar, D. C. Petts, C. Debuhr, and P J Sack. Exploring the link between organic matter and Carlin-type gold mineralization: new insights from Yukon deposits. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330086.
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The link between organic matter and gold in sediment-hosted Carlin-type deposits is controversial. This study aims to tackle this potential link by documenting the occurrence of organic matter in a single borehole from a Carlin-type gold deposit in Yukon and by considering, in a preliminary way, the spatial and/or temporal relationship between organic matter and gold mineralization. The sedimentary succession hosting the Conrad deposit was relatively rich in organic matter, possibly related to Archea. Despite the high maturation of samples, the total organic carbon (TOC) content of the limestone unit averages 1.31 wt. % (maximum = 3.18 wt. %). Petrographic observations indicate that pore and fracture filling pyrobitumen is the dominant organic matter maceral in the studied samples. This type of pyrobitumen was matured after its emplacement, indicating that hydrocarbon fluids cannot have served as an agent for gold transport. Pyrobitumen disseminated in the rock or associated with stylolites are also documented. The correlation between TOC and Tl (the best proxy for Au) for selected samples and the high As content of pyrobitumen filling pores may suggest a link between organic matter content and gold deposition, but this was not demonstrated by LA-ICP-MS micro-scale mapping. This study also highlights the challenges of establishing a direct spatial relationship between 'invisible' gold and very small (&lt; 10 µm) pyrobitumen particles.
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Mateș, Letiția, Marius Emil Rusu, Ionel Fizeșan, Daniela-Saveta Popa, and Daniel Leucuța. Walnut intake interventions targeting biomarkers of metabolic syndrome and inflammation in middle-aged and older adults: a systematic review and meta-analysis of randomized controlled trials research protocol. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, June 2022. http://dx.doi.org/10.37766/inplasy2022.6.0058.
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Review question / Objective: The aim of this study was to conduct a systematic review and meta-analysis of randomized controlled trials (RCTs) in order to properly examine the evidence on the effects of walnut consumption on chosen indicators of inflammation and metabolic syndrome in mature adults. Condition being studied: Metabolic syndrome (MetS), chronic, low-grade inflammation, and oxidative stress are all important risk factors for morbidity and death, with a higher frequency in the elderly population. Information sources: We conducted a comprehensive search in five databases: Pubmed, EMBASE, Scopus, Cochrane, ClinicalTrials, from inception.
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Wozniakowska, P., D. W. Eaton, C. Deblonde, A. Mort, and O. H. Ardakani. Identification of regional structural corridors in the Montney play using trend surface analysis combined with geophysical imaging, British Columbia and Alberta. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328850.
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The Western Canada Sedimentary Basin (WCSB) is a mature oil and gas basin with an extraordinary endowment of publicly accessible data. It contains structural elements of varying age, expressed as folding, faulting, and fracturing, which provide a record of tectonic activity during basin evolution. Knowledge of the structural architecture of the basin is crucial to understand its tectonic evolution; it also provides essential input for a range of geoscientific studies, including hydrogeology, geomechanics, and seismic risk analysis. This study focuses on an area defined by the subsurface extent of the Triassic Montney Formation, a region of the WCSB straddling the border between Alberta and British Columbia, and covering an area of approximately 130,000 km2. In terms of regional structural elements, this area is roughly bisected by the east-west trending Dawson Creek Graben Complex (DCGC), which initially formed in the Late Carboniferous, and is bordered to the southwest by the Late Cretaceous - Paleocene Rocky Mountain thrust and fold belt (TFB). The structural geology of this region has been extensively studied, but structural elements compiled from previous studies exhibit inconsistencies arising from distinct subregions of investigation in previous studies, differences in the interpreted locations of faults, and inconsistent terminology. Moreover, in cases where faults are mapped based on unpublished proprietary data, many existing interpretations suffer from a lack of reproducibility. In this study, publicly accessible data - formation tops derived from well logs, LITHOPROBE seismic profiles and regional potential-field grids, are used to delineate regional structural elements. Where seismic profiles cross key structural features, these features are generally expressed as multi-stranded or en echelon faults and structurally-linked folds, rather than discrete faults. Furthermore, even in areas of relatively tight well control, individual fault structures cannot be discerned in a robust manner, because the spatial sampling is insufficient to resolve fault strands. We have therefore adopted a structural-corridor approach, where structural corridors are defined as laterally continuous trends, identified using geological trend surface analysis supported by geophysical data, that contain co-genetic faults and folds. Such structural trends have been documented in laboratory models of basement-involved faults and some types of structural corridors have been described as flower structures. The distinction between discrete faults and structural corridors is particularly important for induced seismicity risk analysis, as the hazard posed by a single large structure differs from the hazard presented by a corridor of smaller pre-existing faults. We have implemented a workflow that uses trend surface analysis based on formation tops, with extensive quality control, combined with validation using available geophysical data. Seven formations are considered, from the Late Cretaceous Basal Fish Scale Zone (BFSZ) to the Wabamun Group. This approach helped to resolve the problem of limited spatial extent of available seismic data and provided a broader spatial coverage, enabling the investigation of structural trends throughout the entirety of the Montney play. In total, we identified 34 major structural corridors and number of smaller-scale structures, for which a GIS shapefile is included as a digital supplement to facilitate use of these features in other studies. Our study also outlines two buried regional foreland lobes of the Rocky Mountain TFB, both north and south of the DCGC.
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Yaron, Zvi, Abigail Elizur, Martin Schreibman, and Yonathan Zohar. Advancing Puberty in the Black Carp (Mylopharyngodon piceus) and the Striped Bass (Morone saxatilis). United States Department of Agriculture, January 2000. http://dx.doi.org/10.32747/2000.7695841.bard.
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Both the genes and cDNA sequences encoding the b-subunits of black carp LH and FSH were isolated, cloned and sequenced. Sequence analysis of the bcFSHb and LHb5'flanking regions revealed that the promoter region of both genes contains canonical TATA sequences, 30 bp and 17 bp upstream of the transcription start site of FSHb and LHb genes, respectively. In addition, they include several sequences of cis-acting motifs, required for inducible and tissue-specific transcriptional regulation: the gonadotropin-specific element (GSE), GnRH responsive element (GRE), half sites of estrogen and androgen response elements, cAMP response element, and AP1. Several methods have been employed by the Israeli team to purify the recombinant b subunits (EtOH precipitation, gel filtration and lentil lectin). While the final objective to produce pure recombinantGtH subunits has not yet been achieved, we have covered much ground towards this goal. The black carp ovary showed a gradual increase in both mass and oocyte diameter. First postvitellogenic oocytes were found in 5 yr old fish. At this age, the testes already contained spermatozoa. The circulating LH levels increased from 0.5 ng/ml in 4 yr old fish to >5ng/ml in 5 yr old fish. In vivo challenge experiments in black carp showed the initial LH response of the pituitary to GnRH in 4 yr old fish. The response was further augmented in 5 yr old fish. The increase in estradiol level in response to gonadotropic stimulation was first noted in 4 yr old fish but this response was much stronger in the following year. In vivo experiments on the FSHb and LHb mRNA levels in response to GnRH were carried out on common carp as a model for synchronom spawning cyprinids. These experiments showed the prevalence of FSHP in maturing fish while LHP mRNA was prevalent in mature fish, especially in females. The gonadal fat-pad was found to originate from the retroperitoneal mesoderm and not from the genital ridge, thus differing from that reported in certain amphibians This tissue possibly serves as the major source of sex steroids in the immature black carp. However, such a function is taken over by the developing gonads in 4 yr old fish. In the striped bass, we described the ontogeny of the neuro-endocrine parameters along the brain-pituitary-gonadal axis during the first four years of life, throughout gonadal development and the onset of puberty. We also described the responsiveness of the reproductive axis to long-term hormonal manipulations at various stages of gonadal development. Most males reached complete sexual maturity during the first year of life. Puberty was initiated during the third year of life in most females, but this first reproductive cycle did not lead to the acquisition of full sexual maturity. This finding indicates that more than one reproductive cycle may be required before adulthood is reached. Out of the three native GnRHs present in striped bass, only sbGnRH and cGnRH II increased concomitantly with the progress of gonadal development and the onset of puberty. This finding, together with data on GtH synthesis and release, suggests that while sbGnRH and cGnRH II may be involved in the regulation of puberty in striped bass, these neuropeptides are not limiting factors to the onset of puberty. Plasma LH levels remained low in all fish, suggesting that LH plays only a minor role in early gonadal development. This hypothesis was further supported by the finding that experimentally elevated plasma LH levels did not result in the induction of complete ovarian and testicular development. The acquisition of complete puberty in 4 yr old females was associated with a rise in the mRNA levels of all GtH subunit genes, including a 218-fold increase in the mRNA levels of bFSH. mRNA levels of the a and PLH subunits increased only 11- and 8-fold, respectively. Although data on plasma FSH levels are unavailable, the dramatic increase in bFSH mRNA suggests a pivotal role for this hormone in regulating the onset and completion of puberty in striped bass. The hormonal regulation of the onset of puberty and of GtH synthesis and release was studied by chronic administration of testosterone (T) and/or an analog of gonadotropin-releasing hormone (G). Sustained administration of T+G increased the mRNA levels of the PLH subunit to the values characteristic of sexually mature fish, and also increased the plasma levels of LH. However, these changes did not result in the acceleration of sexual maturation. The mRNA levels of the bFSH subunit were slightly stimulated, but remained about 1/10 of the values characteristic of sexually mature fish. It is concluded that the stimulation of FSH gene expression and release does not lead to the acceleration of sexual maturity, and that the failure to sufficiently stimulate the bFSH subunit gene expression may underlie the inability of the treatments to advance sexual maturity. Consequently, FSH is suggested to be the key hormone to the initiation and completion of puberty in striped bass. Future efforts to induce precocious puberty in striped bass should focus on understanding the regulation of FSH synthesis and release and on developing technologies to induce these processes. Definite formulation of hormonal manipulation to advance puberty in the striped bass and the black carp seems to be premature at this stage. However, the project has already yielded a great number of experimental tools of DNA technology, slow-release systems and endocrine information on the process of puberty. These systems and certain protocols have been already utilized successfully to advance maturation in other fish (e.g. grey mullet) and will form a base for further study on fish puberty.
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Seginer, Ido, Daniel H. Willits, Michael Raviv, and Mary M. Peet. Transpirational Cooling of Greenhouse Crops. United States Department of Agriculture, March 2000. http://dx.doi.org/10.32747/2000.7573072.bard.
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Background Transplanting vegetable seedlings to final spacing in the greenhouse is common practice. At the time of transplanting, the transpiring leaf area is a small fraction of the ground area and its cooling effect is rather limited. A preliminary modeling study suggested that if water supply from root to canopy is not limiting, a sparse crop could maintain about the same canopy temperature as a mature crop, at the expense of a considerably higher transpiration flux per leaf (and root) area. The objectives of this project were (1) to test the predictions of the model, (2) to select suitable cooling methods, and (3) to compare the drought resistance of differently prepared seedlings. Procedure Plants were grown in several configurations in high heat load environments, which were moderated by various environmental control methods. The difference between the three experimental locations was mainly in terms of scale, age of plants, and environmental control. Young potted plants were tested for a few days in small growth chambers at Technion and Newe Ya'ar. At NCSU, tomato plants of different ages and planting densities were compared over a whole growing season under conditions similar to commercial greenhouses. Results Effect of spacing: Densely spaced plants transpired less per plant and more per unit ground area than sparsely spaced plants. The canopy temperature of the densely spaced plants was lower. Air temperature was lower and humidity higher in the compartments with the densely spaced plants. The difference between species is mainly in the canopy-to-air Bowen ratio, which is positive for pepper and negative for tomato. Effect of cooling methods: Ventilation and evaporative pad cooling were found to be effective and synergitic. Air mixing turned out to be very ineffective, indicating that the canopy-to-air transfer coefficient is not the limiting factor in the ventilation process. Shading and misting, both affecting the leaf temperature directly, proved to be very effective canopy cooling methods. However, in view of their side effects, they should only be considered as emergency measures. On-line measures of stress: Chlorophyll fluorescence was shown to accurately predict photosynthesis. This is potentially useful as a rapid, non-contact way of assessing canopy heat stress. Normalized canopy temperature and transpiration rate were shown to correlate with water stress. Drought resistance of seedlings: Comparison between normal seedlings and partially defoliated ones, all subjected to prolonged drought, indicated that removing about half of the lowermost leaves prior to transplanting, may facilitate adjustment to the more stressful conditions in the greenhouse. Implications The results of this experimental study may lead to: (1) An improved model for a sparse canopy in a greenhouse. (2) A better ventilation design procedure utilizing improved estimates of the evaporation coefficient for different species and plant configurations. (3) A test for the stress resistance of transplants.
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Granot, David, and Noel Michelle Holbrook. Role of Fructokinases in the Development and Function of the Vascular System. United States Department of Agriculture, January 2011. http://dx.doi.org/10.32747/2011.7592125.bard.
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Plant vascular tissues are superhighways whose development and function have profound implications for productivity, yield and stress response. Preliminary studies by the PI indicated that sugar metabolism mediated by fructokinases (FRKs) has a pronounced effect on the transport properties of the xylem. The goal of this research was to determine how the main fructokinase gene, FRK2, and the only plastidic fructokinase, FRK3, influence vascular development and physiology, emphasizing processes that occur at both the cellular and organismic level. We found that both genes are expressed in vascular tissues, but FRK3 is expressed primarily in vascular tissues of mature petioles. Vascular anatomy of plants with antisense suppression of FRK2 uncovered that FRK2 is necessary for xylem and phloem development, most likely due to its role in vascular cell-wall synthesis, and affects vascular development all over the plant. As a result, suppression of FRK2 reduced hydraulic conductivity of roots, stem and leaves and restricted sugar phloem transport. Vascular anatomy of plants with RNAi suppression of FRK3 uncovered that FRK3 is required for vascular development in mature petiole but its role is partially complemented by FRK2. Suppression of FRK3 combined with partial suppression of FRK2 had effects completely different from that of FRK2 suppression, resulting in wilting of mature leaves rather than young leaves of FRK2 suppressed plants, and decreased export of photoassimilates. This primary effect of FRK2 suppression on mature petioles had a secondary effect, reducing the hydraulic conductivity in roots and stem. The very fact that a plastidic fructokinase plays a role in vascular development is quite surprising and we are still seeking to uncover its metabolic mode-of-action. Yet, it is clear that these two fructokinases have different roles in the coordination between photosynthetic capacity and vascular development. We have started analyzing the role of the last third FRK, FRK1, and discovered that it is also expressed exclusively in vascular tissues. It appears therefore, that all FRKs studied here are involved in vascular development. An interesting unexpected outcome of this study was the connection of FRK2 with hormonal regulation of vascular development, most likely auxin. This observation together with the yet to be solved questions on the exact roles of FRK3 are the subjects of our current efforts.
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Fernandez, Katya, and Cathleen Clerkin. The Stories We Tell: Why Cognitive Distortions Matter for Leaders. Center for Creative Leadership, June 2021. http://dx.doi.org/10.35613/ccl.2021.2045.
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"This study explored whether leaders’ thought patterns (specifically cognitive distortions) and emotion regulation strategies (specifically cognitive reappraisal, cognitive defusion, and expressive suppression) relate to their work experiences. Findings suggest that leaders’ cognitive distortions are related to their work experiences and that emotion regulation strategies can help leaders mitigate the effects of cognitive distortions. More specifically, the results of this study offer the following insights: • Leaders’ cognitive distortions related to all examined workplace topics (role ambiguity, role conflict, social support, perceived organizational support, job satisfaction, and burnout). • Leaders’ use of emotion regulation strategies (cognitive reappraisal and cognitive defusion) mitigated the impact their cognitive distortions had on burnout, specifically. • Attempting to suppress emotional responses was relatively ineffective compared to the other two emotion regulation strategies (cognitive reappraisal and cognitive defusion). These insights suggest that certain emotion regulation strategies may be helpful in ameliorating the deleterious effects of cognitive distortions on leaders’ burnout. The current paper provides an overview of the different cognitive distortions and emotion regulation strategies explored and includes advice on what leaders can do to more effectively notice and manage cognitive distortions that emerge during distressing situations. "
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Bell, Jack, Rik Law, Howell Li, Ben Anderson, and Darcy M. Bullock. New Opportunities for Automated Pedestrian Performance Measures. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317351.
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Pedestrian safety is an important concern when evaluating intersections. Previous literature has shown that exclusive pedestrian phases improve safety, but at the expense of imposing greater pedestrian and motorist delay. However, outside of crash data, there are no easily implementable performance measures for pedestrians at traffic signals. This study proposes two performance metrics: (1) a time-to-jaywalk measure, and (2) the Conflict Occupancy Ratio (COR) for evaluating concurrent pedestrian signal phasing with turning vehicles. The COR quantifies conflicts between turning vehicles and pedestrians in the crosswalk. The COR is based upon a commercially deployed video detection system that correctly identified the presence of pedestrians to within two per cycle in this study. This performance is likely sufficient for the current application, but as the technology matures it will provide a scalable screening tool to identify intersections that have opportunities for capacity adjustments or warrant further direct field investigation.
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Chefetz, Benny, and Baoshan Xing. Sorption of hydrophobic pesticides to aliphatic components of soil organic matter. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7587241.bard.
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Sorption of hydrophobic compounds to aliphatic components of soil organic matter (SOM) is poorly understood even though these aliphatic carbons are a major fraction of SOM. The main source of aliphatic compounds in SOM is above- and below-ground plant cuticular materials (cutin, cutan and suberin). As decomposition proceeds, these aliphatic moieties tend to accumulate in soils. Therefore, if we consider that cuticular material contributes significantly to SOM, we can hypothesize that the cuticular materials play an important role in the sorption processes of hydrophobic compounds (including pesticides) in soils, which has not yet been studied. The overall goal of this research was to illustrate the mechanism and significance of the refractory aliphatic structures of SOM in sorbing hydrophobic compounds (nonionic and weakly polar pesticides). The importance of this study is related to our ability to demonstrate the sorption relationship between key pesticides and an important fraction of SOM. The specific objectives of the project were: (1) To isolate and characterize cuticular fractions from selected plants; (2) To investigate the sorption mechanism of key hydrophobic pesticides and model compounds to cuticular plant materials; (3) To examine the sorption mechanisms at the molecular level using spectroscopic techniques; (4) To investigate the sorption of key hydrophobic pesticides to synthetic polymers; (5) To evaluate the content of cuticular materials in agricultural soils; and (6) To study the effect of incubation of plant cuticular materials in soils on their sorptive capabilities. This project demonstrates the markedly high sorption capacity of various plant cuticular fractions for hydrophobic organic compounds (HOCs) and polar organic pollutants. Both cutin (the main polymer of the cuticle) and cutan biopolymers exhibit high sorption capability even though both sorbents are highly aliphatic in nature. Sorption by plant cuticular matter occurs via hydrophobic interactions and H-bonding interactions with polar sorbates. The cutin biopolymer seems to facilitate reversible and noncompetitive sorption, probably due to its rubbery nature. On the other hand, the epicuticular waxes facilitate enhance desorption in a bi-solute system. These processes are possibly related to phase transition (melting) of the waxes that occur in the presence of high solute loading. Moreover, our data highlight the significance of polarity and accessibility of organic matter in the uptake of nonpolar and polar organic pollutants by regulating the compatibility of sorbate to sorbent. In summary, our data collected in the BARD project suggest that both cutin and cutan play important roles in the sorption of HOCs in soils; however, with decomposition the more condensed structure of the cutin and mainly the cutan biopolymer dominated sorption to the cuticle residues. Since cutin and cutan have been identified as part of SOM and humic substances, it is suggested that retention of HOCs in soils is also controlled by these aliphatic domains and not only by the aromaticrich fractions of SOM.
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Hardani, Rika, Diana Setiyawati, and Yuli Fajar Susetyo. The Effect of Emotion Self-Regulation on Academic Achievement During Adolescence: a Protocol for a Systematic Literature Review And Meta-Analyses. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, March 2022. http://dx.doi.org/10.37766/inplasy2022.3.0073.
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Review question / Objective: The research uses the PICOS method to determine the topic and research objectives. PICOS stands for population, intervention, comparison, outcomes and study. PICOS is one of the guidelines that is often used in quantitative research in systematic research literature reviews (Eriksen & Frandsen, 2018). This study intends to determine how the influence of adolescent self-regulation of emotions on academic achievement. Condition being studied: In the process of achieving high academic achievement, apart from the role of cognitive factors, non-cognitive factors also play an important role. In psychology, there are non-cognitive variables called emotion self-regulation. Many previous studies have investigated this matter. However, researchers have not found a systematic literature review that discusses the effect of emotion self-regulation on adolescent academic achievement.