Thematische Bibliographien / First-time expectant

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Auswahl der wissenschaftlichen Literatur zum Thema „First-time expectant“

Autor: Grafiati

Veröffentlicht am 29. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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Zeitschriftenartikel zum Thema "First-time expectant"

Ganapathy, Thilagavathy. „Tokophobia among First Time Expectant Fathers“. International Journal of Psychiatric Nursing 1, Nr. 1 (2015): 99. http://dx.doi.org/10.5958/2395-180x.2015.00024.9.

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Finnbogadóttir, Hafrún, Elizabeth Crang Svalenius und Eva K Persson. „Expectant first-time fathers’ experiences of pregnancy“. Midwifery 19, Nr. 2 (Juni 2003): 96–105. http://dx.doi.org/10.1016/s0266-6138(03)00003-2.

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Al Furaikh, Samia Saud, und Thilagavathy Ganapathy. „FIRST TIME EXPECTANT FATHERS’ PERSPECTIVES ON BREASTFEEDING“. Volume 2 Issue 2 2, Nr. 2 (15.04.2018): 80–87. http://dx.doi.org/10.31674/mjmr.2018.v02i02.012.

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Background: Mothers who have a supportive and encouraging partner are more likely to plan to breastfeed for a longer duration. Objective: To explore the first-time expectant fathers’ attitudes towards breast feeding practices. Methods: A descriptive cross-sectional study was carried out among n=157 purposively selected first-time expectant fathers attending antenatal clinics along with low risk term primigravida at a tertiary care corporate maternity hospital, Cosmopolitan Bangalore city, Karnataka, India from June 2015 to July 2016. In accordance with Declaration of Helsinki, data was collected by The Iowa Infant Feeding Attitudes Scale (IIFAS). SPSS version 20 was used for analysis. Results: In general men had a favorable attitude towards breastfeeding (51.6±6.98) but they did not articulate specific benefits of it. Most expectant fathers reported that breastfeeding is the ideal way to feed a baby, contains the perfect proportion of nutrients and provides babies with a wide range of health benefits. Plus, breastfeeding is a great way for a mother to bond with her baby physically and mentally. However, 57.2% of them preferred formula-feeding for the baby while mother is away and felt it as healthy as breast milk. Although the men were generally supportive of breastfeeding, majority (58%) did not support breastfeeding in the public places. A few knew about the long-term benefits of breastfeeding on mother and infants. Majority (82.4%) expressed a need for support and information from health personnel on how they could practically support their partners in promoting and enabling breastfeeding. A significant association has been found between their attitudes and level of education and occupation at 0.05 levels. Conclusion: Health professionals must provide man-centric prenatal education to promote breastfeeding practices. They should involve, include and support fathers, recognizing their importance in the breastfeeding relationship.

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Chen, Charles P., und Lindsay Morris. „Improving career wellbeing for first-time expectant mothers“. Australian Journal of Career Development 29, Nr. 2 (22.06.2020): 137–43. http://dx.doi.org/10.1177/1038416220919827.

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Within the diverse population of working women, those who experience pregnancy for the first time may face some particular challenges when it comes to their career development needs and issues. These include discrimination in the workplace, responding to social expectations and pressures, negotiating life roles, and evolving personal identities. This article discusses the major career problems encountered by this target group, both structurally and socially, with a focus on individual strategies to access personal agentic functioning and empower women facing these challenges. These workers are often overlooked in the career literature; yet, there is a range of career theories to draw upon to assist them in their needs. The application of the life-span, life-space career theory, and the narrative therapy approaches are explored in relation to the helping process. These two theoretical orientations were chosen as they address the particular challenges faced by pregnant women in the workplace, especially around negotiating life roles and an evolving personal identity. There is a need for a stronger understanding of these challenges and opportunities to support pregnant women as they seek vocational wellbeing, and how to tailor suitable, well-established career counselling strategies to meet their unique needs.

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Kan, Marni L., und Mark E. Feinberg. „Measurement and Correlates of Intimate Partner Violence Among Expectant First-Time Parents“. Violence and Victims 25, Nr. 3 (Juni 2010): 319–31. http://dx.doi.org/10.1891/0886-6708.25.3.319.

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Research on the implications of varying measurement strategies for estimating levels and correlates of intimate partner violence (IPV) has been limited. This study explored measurement and correlates of IPV using a community sample of 168 couples who were expecting their first child. In line with prior research, couple agreement regarding the presence of violence was low, and maximum reported estimates revealed substantial IPV perpetrated by both expectant mothers and fathers. Different types of IPV scores predicted unique variance in mental health problems and couple relationship distress among both the whole sample and the subsamples who perpetrated any violence. Discussion focuses on the methodological and substantive implications of these findings for the study of IPV during the transition to parenthood.

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Ganapathy, Thilagavathy. „A second victim of pregnancy: “Phobic first-time expectant fathers”“. Muller Journal of Medical Sciences and Research 9, Nr. 1 (2018): 25. http://dx.doi.org/10.4103/mjmsr.mjmsr_62_17.

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Nuntapong, P., N. Sansiriphun und Ch Baosoung. „Factors Related to Father Involvement among First Time Expectant Fathers“. International Journal of Evidence-Based Healthcare 14 (Dezember 2016): S21. http://dx.doi.org/10.1097/01.xeb.0000511649.45594.5b.

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Boyce, Philip, John Condon, Jodi Barton und Carolyn Corkindale. „First-Time Fathers’ Study: Psychological Distress in Expectant Fathers During Pregnancy“. Australian & New Zealand Journal of Psychiatry 41, Nr. 9 (September 2007): 718–25. http://dx.doi.org/10.1080/00048670701517959.

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Objective: High levels of distress have previously been reported among expectant fathers, with the level of distress for new fathers falling after the birth and during the first year of their infants’ lives. The aim of the present study was to report on the associations with the fathers’ initial high levels of distress. Method: The men completed a series of questionnaires on various aspects of their psychological functioning at a baseline assessment when their partners were in the late first trimester of their pregnancy. The General Health Questionnaire-28 (GHQ-28) was the key measure of psychological distress for the present study. Men scoring >5 on the GHQ were considered to be cases of distress. The cases and non-cases were contrasted on the baseline psychosocial measures. Results: A total of 312 men completed the questionnaires, of whom 18.6% were designated as cases. GHQ caseness was associated with high levels of symptoms on other measures of psychological distress, higher levels of alcohol consumption, poorer quality of their current intimate relationship, poorer social support, a lower quality of life, high levels of neuroticism and the use of immature ego defences. Multiple regression analysis identified the key variables associated with psychological distress to be high levels of neuroticism, dissatisfaction with social support and an excess number of additional life events. Conclusions: Psychological distress among expectant fathers is associated with a range of psychological variables, particularly poor marital relationship and poor social networks. This is consistent with a general vulnerability model for psychological distress. Fathers who had insufficient information about pregnancy and childbirth were also at risk of being distressed, suggesting that more attention needs to be paid to providing information to men about their partner's pregnancy, childbirth and issues relating to caring for a newborn infant.

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Gouilhers, Solène, Yvonne Meyer, Sophie Inglin, Stéphanie Pfister Boulenaz, Céline Schnegg und Raphaël Hammer. „Pregnancy as a transition: First‐time expectant couples′ experience with alcohol consumption“. Drug and Alcohol Review 38, Nr. 7 (23.08.2019): 758–65. http://dx.doi.org/10.1111/dar.12973.

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Serçekuş, Pınar, Okan Vardar, Sinem Göral Türkçü und Sevgi Özkan. „Why are first time expectant fathers afraid of birth? : A qualitative study“. European Journal of Obstetrics & Gynecology and Reproductive Biology 254 (November 2020): 231–35. http://dx.doi.org/10.1016/j.ejogrb.2020.09.032.

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Dissertationen zum Thema "First-time expectant"

Levenstein, Angela. „The experiences of first time expectant fathers“. Click here for text online. The Institute of Clinical Social Work Dissertations website, 1992. http://www.icsw.edu/_dissertations/levenstein_1992.pdf.

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Dissertation (Ph.D.) -- The Institute for Clinical Social Work, 1992.
A dissertation submitted to the faculty of the Institute of Clinical Social Work in partial fulfillment for the degree of Doctor of Philosophy.

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Davis, Helen V. „Behavioral change in first time expectant fathers' aggression“. Huntington, WV : [Marshall University Libraries], 2002. http://www.marshall.edu/etd/descript.asp?ref=185.

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Tarr-Stiglich, Sheila. „Non-physical abuse behavioral changes in first time expectant fathers“. Huntington, WV : [Marshall University Libraries], 2002. http://www.marshall.edu/etd/descript.asp?ref=184.

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Watt, Michael W. „A study of the effects of anxiety on first time expectant fathers“. Huntington, WV : [Marshall University Libraries], 2003. http://www.marshall.edu/etd/descript.asp?ref=254.

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Cunningham, Benjamin T. „A comparison of relationship dimensions with behavior dimensions for first time expectant fathers“. Huntington, WV : [Marshall University Libraries], 2003. http://www.marshall.edu/etd/descript.asp?ref=177.

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Summerscales, Claire. „Stress, psychological distress and social support during pregnancy : a comparison of first-time expectant parents“. Thesis, University of Leicester, 2003. http://hdl.handle.net/2381/31183.

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This research thesis was based upon an exploratory study that investigated the relationships between stress, psychological distress and social support in a sample of pregnant women and their partners. The study was particularly interested in the exploration of gender differences in reported stress and distress, and the provision of new information about fathers' experiences during pregnancy. Specific hypotheses were proposed which predicted gender differences in reported levels of stress, psychological distress and linear relationships between stress, psychological distress, and social support. Thirty-eight female and twenty-nine male participants expecting their first baby took part in the study during the third trimester of pregnancy The sample was recruited from Parentcraft Groups held at the Leicester General Hospital. Participants completed a booklet of self-report measures on one occasion. Independent T Tests were undertaken to identify any gender differences. Relationships between variables were examined using bivariate correlations. The relative power of variables as predictors of psychological distress was examined using regression analysis. Significant gender differences were found with females reporting higher levels of stress, psychological distress and depression than males. Significant positive relationships were found between stress and psychological distress. No significant relationships were found between social support and stress or social support and psychological distress. Significant negative relationships were found between satisfaction with partner relationships and psychological distress. No significant gender differences in social support were identified. Stress and satisfaction with the partner relationship were the strongest predictors of psychological distress, whilst stress and the quality of social support were the strongest predictors of depression. Clinical implications were proposed in light of the findings. Sample, measurement and design limitations of the study were identified. Directions for future research were presented. For the majority of expectant parents, pregnancy was a time of good psychological adjustment. However, for a minority of expectant mothers and fathers, clinically significant levels of stress, psychological distress and depression were present during pregnancy. It is important that future service provision considers the needs of expectant mothers and fathers during pregnancy in addition to the postpartum period.

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Allen, Lynn. „Comparing behavior assessment measures with behavior specific responses to assess aggression in first-time expectant fathers“. Huntington, WV : [Marshall University Libraries], 2003. http://www.marshall.edu/etd/descript.asp?ref=148.

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Thaduri, Sharanya. „Migratory experiences and perceptions towards pregnancy applications : Comparing insights from natives and immigrants living in Sweden“. Thesis, Uppsala universitet, Människa-datorinteraktion, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447419.

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Increasing number of pregnancy applications (apps) are complementing healthcare systems to educate expectants and improve their maternal well-being. Using similar kind of applications for people from multicultural background might have varied impact on their pregnancy experiences. Especially for immigrants, cultural beliefs first set in their home country, might conflict with practices followed in country of residence and information provided in digital resources. This study aimed to compare the perceptions on pregnancy app usage by first-time expectants living in Sweden from native and migrant perspectives. Data was collected using semi-structured interviews through an online platform, Zoom, and explored the users’ opinions on app’ usage. Twelve first-time expectants were recruited through snowball sampling technique using social media group. Data was then analyzed using thematic qualitative analysis. The findings indicate the importance of understanding healthcare practices and social support in country of residence. Participants expressed that they developed a connection with unborn through pregnancy apps. However, app usage raised conflicts between user expectations from knowledge gained by apps and information provided by healthcare system, also exposed potential problems faced by immigrants due to different approaches followed by Swedish healthcare system. Participants using English apps expressed that they are receiving updates according to American healthcare system, while participants using Swedish apps asserted that they are getting relevant information adapted to Swedish society. The study advocates that the apps are not well-suited for migratory background users and provided possible solutions to improve existing pregnancy apps for maximum number of users to benefit.

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賴婧儒 und Sin-yue Celine Lai. „The disconfirmation-expectancy model of hearing aid satisfaction in first time users in Hong Kong“. Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41548073.

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Lai, Sin-yue Celine. „The disconfirmation-expectancy model of hearing aid satisfaction in first time users in Hong Kong“. Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41548073.

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Bücher zum Thema "First-time expectant"

Skiadas, Christos H. The health state function of a population: Stochastic modeling and the first exit time theory in demography, derivation and classification of human development age groups, healthy life expectancy estimates, fitting curves and forecasts. Athens, Greece: National Library of Greece, 2013.

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Bettinelli, Bernard S. A brief psychoeducational intervention for first-time expectant fathers. 1988.

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Facteau, Lorna Macneill. IDENTIFICATION OF ANTICIPATORY ROLE BEHAVIORS IN THE PROCESS OF PATERNAL ROLE ACQUISITION IN EXPECTANT FIRST-TIME FATHERS. 1988.

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BD, Color. Relaxing Coloring Book for Pregnant Women: Pregnancy Colouring Book for Expectant Mother, New Mom, First Time Pregnancy Gifts. Independently Published, 2020.

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Momyz N. Momyz N Babyz. New Dad Adventure Journal: First Time Dad Journal, Diary for New Dads, Father for First Time, Father Pregnancy Journal, Pregnancy Journal for Dad, Expectant Father Journal, Dads to Be Journal, 6 X 9. Independently Published, 2020.

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Kaplan, Judith Ann. THE RELATIONSHIP OF DAYDREAMING STYLES TO PERCEPTION OF MATERNAL PARENTING ROLE AND MATERNAL-FETAL ATTACHMENT IN FIRST-TIME EXPECTANT WOMEN DURING THE THIRD TRIMESTER OF PREGNANCY. 1993.

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Sarah, Tribuiani. First Time Dads Expectant Father Future Funny 2019 : Blank Lined Notebook-Funny Quote Journal-6x9/120 Pages: Veterinarian Gag Gift for Secret ... Friends, Family, Gift for Employees/boss. Independently Published, 2020.

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Marshall, Lisa, und Johnny Antonelli. First-Time Parents: Becoming a Dad + Newborn Care Basics - Pregnancy Preparation for Dads-To-Be and Expecting Moms. Independently Published, 2020.

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Designs, Pretty Simple. Pregnancy Journal: First Time New Mom Diary, Pregnant and Expecting Record Book, Baby Shower Keepsake Gift, Bump Thoughts and Memories Notebook. Independently Published, 2020.

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Buchteile zum Thema "First-time expectant"

Lienhard, John H. „Being There“. In The Engines of Our Ingenuity. Oxford University Press, 2000. http://dx.doi.org/10.1093/oso/9780195135831.003.0019.

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We come at last to the forbidden first person, the I am. No story is right until the teller is part of it. Yet a peculiar mischief is abroad in the land of science and engineering. It is a mischief born out of the noblest of intentions. For decades it has spread like the flu, far beyond the technical journals that gave it birth. The intention is to let us stand like blindfolded Justice—pure, objective, and aloof. To do this, we write about our work without ever speaking in the first person. We try to let fact speak for itself. Instead of saying, “I solved the equation and got y = log x”, we write, “The solution of the equation is y = log x”. We turn our actions into facts that are untouched by human hands. To some extent we must do that. Our facts should be sufficiently solid that we do not need to prop them up with our desires. Third-person detachment has its place, but my own person is not so easy to erase. Suppose I think another engineer, whom I shall call Hoople, is wrong. I am not objective about Hoople, but I must appear to be. So I write, “It is believed that Hoople is incorrect.” That’s a cheap shot. I express my thoughts without taking responsibility for them. I seem to be reporting general disapproval of Hoople. In the unholy name of objectivity, I make it sound as though the whole profession thinks that Hoople is a fool. Now radio and TV journalists are doing it. I cringe every time I hear, “It is expected that Congress will pass the bill. “Who expects that? The announcer? The Democrats? A government official? Maybe the soy sauce lobby is the expectant source. So instead of objectivity we get obfuscation. If our work really occurred in objective isolation, we could write about it that way. But people are present. They think and they act. If we fail to represent human intervention accurately, we are dishonest, and objectivity becomes meaningless. The things we make tell the world what we are.

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Frithjof Norheim, Ole. „The Badness of Death“. In Saving People from the Harm of Death, 33–47. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190921415.003.0003.

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In this chapter, I discuss the Time-Relative Interest Account (TRIA) and the Life Comparative Account (LCA) and their implications for summary measures of population health and fair priority setting in health care. First, I argue that an extreme interpretation of TRIA is incompatible with the standard practice of measuring population health by life expectancy at birth as an indicator. Implementing a policy of always saving adults before children would decrease life expectancy in a population. This implication is untenable. Second, I argue that a moderate interpretation of TRIA is compatible with earlier attempts to measure the burden of disease in populations by using marginal age weights in the valuation of Disability-Adjusted Life Years lost. The authors of the Global Burden of Disease study subsequently abandoned age weights. Third, I argue that marginal age weights used for determining social priority for health improvements may be appropriate.

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Riess Jones, Mari. „Parallelism“. In Time Will Tell, 158–80. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190618216.003.0008.

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The ability to “keep time” refers to the momentary tracking of a dynamic environmental event; sometimes our natural tendencies for “keeping” time are apparent, while the underlying synchronies of attending may be less obvious. This chapter has three goals. The first is to demonstrate a parallelism between the production of an event (e.g., a spoken phrase or sentence) and one’s expectancy or perception of that event. Expressing such parallels requires specifying underlying factors in production and expectancies, such as the attractors and referent oscillation responsible for producing a tempo curve. The second goal is to propose the respective roles of voluntary and involuntary factors that figure into these expressions. The third goal is to present readers with a sample of studies that embody parallelism.

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Blyth, Michael. „‘It’s Just a Matter of Time’“. In In the Mouth of Madness, 13–18. Liverpool University Press, 2018. http://dx.doi.org/10.3828/liverpool/9781911325406.003.0002.

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This chapter discusses the cinematic horror landscape at the time John Carpenter's In the Mouth of Madness was first released, explaining why the film was so unfairly neglected in 1995. It is often acknowledged among horror fans that the early 1990s was not the strongest period in the genre's history. In fact, it has been argued that the first half of the decade represented one of the most significant lulls that US horror cinema has been witness to, with the volume of film production, box office takings, and overall audience interest hitting an all-time low. Of course, such lulls can only ever really come after a boom, and the previous decade had been a highly prolific and profitable time for the genre. But while the 1980s were littered with innovative horror classics, it is also recognised as the era of the sequel, a time when the franchise reigned supreme and horror cinema became less about striving for new ideas than the increasingly cynical (but lucrative) expansion of those which had come before. Ultimately, not only did In the Mouth of Madness debut during the closing moments of this significant horror depression, it came at a time when no one was expecting great things from its director.

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Nakachi, Mie. „Introduction“. In Replacing the Dead, 1–20. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780190635138.003.0001.

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In 1955 the Soviet Union became the first country in the world to legalize abortion on the principle of women’s rights. This was the result of the postwar politics of reproduction. The socialist ideology of women and population, as well as prewar Soviet policy on family and marriage, provided important background. In the prewar period Soviet marriage had already become unstable, but it disintegrated further during World War II. Mobilization, evacuation, and warfare and genocide all played their role. This was the context in which policymakers introduced the extreme pronatalist policy that encouraged out-of-wedlock births while expecting women to work full time. The postwar history of Soviet reproductive politics and practice went beyond Russian and Soviet borders, spreading distinct socialist reproductive practices.

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Neumann, Franz. „German Morale After Tunisia“. In Secret Reports on Nazi Germany. Princeton University Press, 2013. http://dx.doi.org/10.23943/princeton/9780691134130.003.0008.

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This chapter examines the effect of Nazi defeat in Tunisia on German morale. The United Nations received many reports across a number of weeks of a marked deterioration in German “morale.” The defeat in Tunisia, according to these reports, drove home the lesson of Stalingrad and finally shattered the myth of Nazi Germany's invincibility, even for the Nazis. German propaganda was now having to concern itself seriously for the first time with the possibility of defeat. Tales of unrest, of war weariness, even of open opposition were appearing on every hand. For some observers, these items added up to a familiar pattern of impending collapse. The question became urgent whether, in fact, the United Nations had any ground for expecting Germany to repeat the debacle of 1918, from which Adolf Hitler learned a lesson.

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Steves, Claire, und Neil Pendleton. „Ageing and clinical medicine“. In Oxford Textbook of Medicine, herausgegeben von Finbarr C. Martin, 511–20. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0052.

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In 2017 there were, for the first time, more people older than 65 years than children under the age of 5 years. Despite the recent exponential increase in human lifespan, health-span has not kept pace, and variability between countries in healthy lifespan exceeds that of life expectancy. The increase in morbidity as people age is largely explained by loss of physiological reserve capacity in multiple systems simultaneously, which is termed frailty. Recent evidence suggests that different heritable (intrinsic factors) factors drive the ageing of different organ systems, but diverse systems share environmental (or extrinsic) drivers. Ageing is associated with macromolecular changes (molecular damage); changes in nutrient sensing, metabolism, and metabolic signalling; senescence in stem cells; altered intercellular communication, in particular changes associated with inflammaging; and changes in circadian rhythms and the hypothalamo-pituitary-adrenal axis.

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Mechetti, Fábio. „Orquestra Filarmônica de Minas Gerais“. In Advances in Business Strategy and Competitive Advantage, 389–97. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7265-7.ch021.

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The lights gradually dim. Like an army of warriors dressed in black and white, one hundred musicians enter the stage under the applause of the public. They take their positions awaiting the entrance of the concertmaster, who solemnly advance to the first chair acknowledging, one more time, the applause. A sound from the Principal Oboist is heard, followed by the other musicians, looking for a common understanding, each one searching to meet the proposed “A.” Then, all stay quiet. With a determined and resolute pace, the Maestro enters the stage moving to the podium, warmly greeted by an expecting audience. The Symphony is about to start. Could it be that this moment, though, is much more than an experience of bringing to life a musical work from the past? Could this also be the utmost symbol of an ideal demonstration of society's quest for organization, functionality and purpose?

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Lowrie, Walter. „Thirty-four Years Old“. In A Short Life of Kierkegaard. Princeton University Press, 2013. http://dx.doi.org/10.23943/princeton/9780691157771.003.0014.

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This chapter discusses Kierkegaard's troubles upon reaching the unexpected age of thirty-four years old. Expecting to die earlier, he had already used up a good part of his capital, and now, with an indefinite term of life before him, he would be obliged to make more use of it. This concern prompted him to take various measures to secure his economic position, which this chapter narrates at length. In addition, the chapter takes a look at “the case of Adler”—an issue which troubled Kierkegaard more deeply than his other troubles of the time. For three years he was deeply engrossed in writing and rewriting his “big book on Adler,” with P.A. Adler being a Danish pastor lately deposed for the claim he had made in his first book that it was written at the dictation of Jesus Christ, as well as by his awkward recantation thereafter.

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Mogensen, Andreas. „Life Years at Stake“. In Saving People from the Harm of Death, 48–60. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190921415.003.0004.

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In quantifying the global burden of disease in terms of Disability-Adjusted Life Years (DALYs), we must determine both Years of Life Lost (YLLs) and Years Lost to Disability (YLDs). In setting priorities for global health, many have felt that YLLs should not always simply equal life expectancy at death. To this end, Dean Jamison and colleagues recommend the use of a DALY metric that incorporates Acquisition of Life Potential (ALP). When an individual dies, the YLLs that we would otherwise count are multiplied by the value of the ALP function, which rises gradually from 0 to 1 during the first stages of an individual’s life. Jamison et al. do not provide a detailed philosophical justification for the use of gradual ALP. In this chapter I explain why I believe the Time-Relative Interest Account represents the most plausible ethical basis for the ALP approach and describe how we might model ALP in light of this account.

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Konferenzberichte zum Thema "First-time expectant"

Skiadas, Christos H., und Charilaos Skiadas. „Exploring life expectancy limits: First exit time modeling, parameter analysis and forecasts“. In Selected Papers from the 3rd Chaotic Modeling and Simulation International Conference (CHAOS2010). WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814350341_0042.

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Salles, Loi¨c, Laurent Blanc, Fabrice Thouverez, Alexander M. Gouskov und Pierrick Jean. „Dual Time Stepping Algorithms With the High Order Harmonic Balance Method for Contact Interfaces With Fretting-Wear“. In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46488.

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Contact interfaces with dry friction are frequently used in turbomachinery. Dry friction damping produced by the sliding surfaces of these interfaces reduces the amplitude of bladed-disk vibration. The relative displacements at these interfaces lead to fretting-wear which reduces the average life expectancy of the structure. Frequency response functions are calculated numerically by using the multi-Harmonic Balance Method (mHBM). The Dynamic Lagrangian Frequency-Time method is used to calculate contact forces in the frequency domain. A new strategy for solving non-linear systems based on dual time stepping is applied. This method is faster than using Newton solvers. It was used successfully for solving Nonlinear CFD equations in the frequency domain. This new approach allows identifying the steady state of worn systems by integrating wear rate equations a on dual time scale. The dual time equations are integrated by an implicit scheme. Of the different orders tested, the first order scheme provided the best results.

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Gjika (Dhamo), Eralda, Lule Basha, Xhensilda Allka und Aurora Ferrja. „Predicting the Albanian economic development using multivariate Markov chain model“. In 11th International Scientific Conference „Business and Management 2020“. VGTU Technika, 2020. http://dx.doi.org/10.3846/bm.2020.581.

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In this work, the economic development and relation to social and demography indices in Albania were studied. Four time series (yearly data for the period 1995–2018) were considered: consumer price index (CPI), unemployment rate, inflation and life expectancy. In our approach, a first and fifth order multivariate Markov chain model was proposed to predict the economic situation in Albania in the proceedings years. Tests and accuracy analysis of the model were performed. The prediction probabilities fall in the interval of 0.47 to 0.52 and the accuracy of both models is 75%. Our approach is a short term probability forecast model that can be used by the policymakers to evaluate and undertake initiatives to improve the situation in the country.

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Vesely, Ladislav, und Vaclav Dostal. „Accident at Fukushima Dai-Ichi Nuclear Power Plant: Lessons Learned for the Czech Republic“. In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-31160.

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Accident at Fukushima Dai-Ichi nuclear power plant significantly affected the nuclear industry at time when everybody was expecting the so called nuclear renaissance. There is no question that the accident has at least slowed it down. Research into this accident is taking place all over the world. In this paper we present the findings of research on Fukushima nuclear power plant accident in relation to the Czech Republic. The paper focuses on the analysis of human performance during the accident. Lessons learned from the accident and main human errors are presented. First the brief factors affecting the human performance are discussed. They are followed by the short description of activities on units 1–3. The key human errors in the accident mitigation are then identified. On unit 1 the main error is wrong understanding and operation of isolation condenser. On unit 2 the main errors were unsuccessful depressurization with subsequent delay of coolant injection. On unit 3 the main error is the shutdown of high pressure cooling injection system without first confirming that different means of cooling are available. These errors lead to fuel damage. On unit 1 the fuel damage was probably impossible to prevent, however on unit 2 and 3 it could be probably prevented. The lessons learned for the Czech Republic were presented. They can be summarizes as follows: be sure that plant personnel can and knows how to monitor and operate the crucial plant components, be sure that the procedures on how to fulfill the critical safety functions are available in the symptomatic manner for situations when there is no power available at the plant, train personnel for these situations and have sufficient human resource available for these situations.

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Robinson, Risa J., Dean Culver, Michael J. Schertzer, Timothy P. Landschoot und Edward C. Hensel. „Understanding the Causes for Low Student Office Hour Attendance“. In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38698.

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It is long understood that many students do not take advantage of faculty assistance outside of class. In an attempt to improve the use of office hours, faculty have made efforts to schedule times that are most convenient to students and are most likely to have high attendance; before homework assignments are due or examinations are being held. Despite these efforts, students rarely take advantage of this support service. As a first attempt to improve student engagement, the number of office hours held by teaching assistants (TAs) was increased, expecting that students would feel more comfortable asking for help from TAs rather than faculty. However, office hour attendance was no better for TAs than for faculty. Yet, exam performance continued to indicate that many students could benefit from help outside the classroom. In an effort to better understand this trend, a survey was conducted to examine reasons why students choose not to attend office hours. In particular, we were looking for the effect of social norms, student’s perception of their understanding of the material and their need for extra help, as well as the use of other resources such as on-line solutions to homework problems and cooperative learning with other students. This survey was conducted in six classes (300 students) comprising our engineering science core curriculum, including: Statics, Mechanics of Materials, Dynamics, Thermodynamics, Fluid Mechanics and Heat Transfer. Results indicated that of all the factors tested, the only ones that positively correlated to low office hour attendance were (1) students felt they understood the material well enough and did not need extra help, (2) students procrastinated and therefore did not have time to seek help before homework was due, and (3) students who spent less overall time studying outside of class attended fewer office hours. The data did not support our initial premise that students who attended more office hours performed better. Further study is warranted to explore behaviors that enhance student performance. It is expected that results from these studies will provide information to improve students’ efficient use of time outside the classroom.

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Garrison, Jared B., und Michael E. Webber. „Simulating the Dynamic and Steady State Response of a Rotor Resistive Controlled 1.5 MW Variable Speed Wind Turbine“. In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90183.

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Currently, wind and solar technologies only generate 0.77% and 0.014% of the U.S. electricity consumption, respectively [1]. Though only a small portion of total U.S. electricity production, both sources have seen significant growth recently. For instance, Texas has more than quadrupled its installed wind capacity over the period from 2005–2009 with new installations totaling over 9400 MW [2, 3]. These two resources are globally available and have the potential to generate massive amounts of electricity. As the amount of installed wind turbines continues to grow, gaining better knowledge of their operation and their dynamic response to changing wind conditions is important to ensure their smooth integration and safe operation. The goal of this research is to analyze the dynamic and steady state operations of a 1.5 MW variable speed wind turbine that uses an external rotor resistive control mechanism. The addition of the external generator rotor resistance allows for adjustment of the generator slip and employs a feedback controller that maintains constant power output at all air velocities between the rated wind speed and cut-out wind speed. Using the electronic programming language PSCAD/EMTDC the model simulates the dynamic response to changing wind conditions, as well as the performance under all wind conditions. The first task of the model was to determine which blade pitch angle produces a maximum power output of 1.5 MW. A sweep was used where the simulation runs over the entire range of wind speeds for a selected pitch angle to find which speed resulted in maximum power output. This sweep was used for numerous blade pitch angles until the combination of wind speed and pitch angle at 14.4 m/s and −0.663°, respectively, resulted in a maximum power of 1.5 MW. The second task was to evaluate the model’s dynamic response to changes in wind conditions as well as steady state operation over all wind speeds. The dynamic response to an increase or decrease in wind speed is important to the safety and life expectancy of a wind turbine because unwanted spikes and dips can occur that increase stresses in the wind turbine and possibly lead to failure. In order to minimize these transient effects, multiple controllers were implemented in order to test each ones’ dynamic response to increasing and decreasing changes in wind velocity. These simulations modeled the characteristics of a variable-speed wind turbine with constant power rotor resistive control. First, through calibrating the model the design specifications of blade pitch and wind speed which yield the peak desired output of 1.5 MW were determined. Then, using the method of controlling the external rotor resistance, the simulation was able to maintain the 1.5 MW power output for all wind speeds between the rated and cutout speeds. Also, by using multiple controllers, the dynamic response of the control scheme was improved by reducing the magnitude of the initial response and convergence time that results from changes in wind speed. Finally, by allowing the simulation to converge at each wind speed, the steady state operation, including generator power output and resistive thermal losses, was characterized for all wind speeds.

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Lopes, Marcelo Garcez. „Safety Culture“. In 2010 8th International Pipeline Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ipc2010-31368.

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The occurrence of accidents which resulted in lost work time, since 2007, prompted the Company to invest in a new Educational Program to prevent accidents. The program was divided into several parts. One of these parts was the project on Safety Culture. The Safety Culture project had been implemented since September, 2009, at PETROBRAS TRANSPORTES S.A. – TRANSPETRO, in Guarulhos, Sa˜o Paulo, Brazil. The project had intended to change the employee’s behavior, informing the employees, who are exposed the risks, to know and understand the risks associated with their tasks, delivering a higher perception of the risks and making possible a change of behavior resulting in employees reaching a safe attitude. The Safety Culture project was developed specifically for TRANSPETRO. The project was divided in three parts: Safety Culture Visual, Procedures and Leading with Safety. This paper will discuss the content one part, Safety Culture Visual. The Safety Culture Visual concept has as its main objective to completely change the visual of the Company. In this concept about Safety Culture Visual, the Company wanted to demonstrate its concern with employee’s safety. Although the goal of the project was to change worker’s behavior, it was important first to communicate that having a strong Safety Culture is a main objective of the Company’s culture. The beginning of the paper discusses how the company can change its visual. By changing your visual, the company can demonstrate to workers that they are interested in their safety and their lives. Posting warning signs at the entrance of the company, at the entrance of the offices, streets, work areas, and other settings where employees must go were all small signs that the company had started to focus on the importance of having a safety culture. By installing warning signs everywhere, workers who are exposed to the risks can better know and understand the risks associated with their tasks. This greater awareness of the risks associated with their tasks provide the employee a greater insight to the risks, enabling a behavior change and helping them reach a complete attitude on safety. The methodology that the Company has been using to implement this change in vision is an “Andrago´gico Model”, exploring the experience of the person; with a focus on the day by day work and daily life situations. The project has been applied in the form of weekly leadership meetings, where everybody has the opportunity to suggest ideas as to promote the change. Expecting results and consequence of the Project: • to turn the concept of safety into a real value to the worker; • to preserve the integrity and to give value to the life of the employee; • pursue a lasting and stable changing of behavior, with a culture based on safety; and • to support the management safety system and reduction of accidents. This project has reduced worker’s exposure to risks and has diminished the number of industrial accidents. Accidents with lost time: using a different concept to deal with safety, focusing directly on the behavior of the worker, leading the worker to a shaper perception of the risks and thus enabling a change of behavior towards a safer attitude.

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Esch, Markus, Bernd Ju¨rgens, Antonio Hurtado, Dietrich Knoche und Wolfgang Tietsch. „State of the Art of Helium Heat Exchanger Development for Future HTR-Projects“. In Fourth International Topical Meeting on High Temperature Reactor Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/htr2008-58146.

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In Germany two HTR nuclear power plants had been built and operated, the AVR-15 and the THTR-300. Also various projects for different purposes in a large power range had been developed. The AVR-15, an experimental reactor with a power output of 15 MWel was operated for more than 20 years with excellent results. The THTR-300 was designed as a prototype demonstration plant with 300 MWel and should be the technological basis for the entire future reactor line. The THTR-300 was prematurely shut down and decommissioned because of political reasons. But because of the accompanying comprehensive R&D program and the operation time of about 5 years, the technology was proved and essential operational results were gained. The AVR steam generator was installed above the reactor core. The six THTR heat exchangers were arranged circularly around the reactor core. Both heat exchanger systems have been operated successfully and furthermore acted as a residual heat removal system. The technology knowledge and experience gained on these existing HTR plants is still available at Westinghouse Electric Germany GmbH since Westinghouse is one of the legal successors of the former German HTR companies. As a follow-up project of THTR, the HTR-500 was developed and designed up to the manufacturing stage. For this plant additionally to the 8 steam generators, two residual heat removal heat exchangers were foreseen. These were to be installed in a ring around the reactor core. All these HTRs were designed for the generation of electricity using a steam cycle. Extensive research work has also been done for advanced applications of HTR technology e.g. using a direct cycle within the HHT project or generating process heat within the framework of the PNP project. Because of the critical attitude of the German government to the nuclear power in the past 20 years in Germany there was only a very limited interest in the further development of the HTR technology. As a consequence of the German decision, at the beginning of the 90s, to phase out nuclear power completely, research and funding of further development of HTR reactor design was also cut down. Today’s HTR reactor designs, such as the PBMR in South Africa, use a direct cycle with a gas turbine. This technology is also based on the THTR technology and PBMR is a licensed party. For the HTR-PM in China and the future oil sand projects powered by HTR’s in Canada and Siberia however the use of steam generators is required. Westinghouse and Dresden University cooperate in the field of steam generator technology for HTR reactors. The existing know-how for HTR is based on a huge pool of knowledge gained by the past German HTR projects mentioned above and consists especially of the design methodology, the mechanical layout and material issues for helium heated steam generators. The project team consists of experienced specialists who have worked on HTR projects in the past and of young graduate engineers. Main goal of the project is to analyze the existing know-how and to adjust it to the state of the art. As a first step, the existing design and its methodology is being analyzed and the different points of improvement are identified. The final step of the program is the description of a new methodology which fulfills the severe requirements of the customer and all of the actual licensing conditions. One of the reasons why this project has been launched is that the requirements of life expectancy for HTR components increase and the material limits will be reached, especially at high temperatures. This implies that the design of helix heat exchangers has to allow inservice inspections; this was not a requirement for the previous THTR design. Methodologies for in-service inspections already had been developed, but they are not sufficient for today’s tube lengths and have to be adapted. Another example, based on operating experience, is using reheaters to increase the efficiency is not recommended today. Using supercritical steam conditions to increase the efficiency should be investigated instead. In general, the economic benefit has to be balanced against the additional costs resulting from better material and more complex manufacturing.

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