Relevant bibliographies by topics / Role orientation

Academic literature on the topic 'Role orientation'

Author: Grafiati
Published: 11 March 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Role orientation.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Role orientation"

1

Diao, Maguette Teuw, and Balla Doucoure. "Implementing Strategic Orientations in SMEs: The role of CEO’s Market Orientation." Journal of Comparative International Management 25, no. 2 (December 28, 2022): 246–74. http://dx.doi.org/10.55482/jcim.2022.33299.

Full text
Abstract:
The purpose of this study is to explore the influence of a CEO’s market orientation on the strategic orientations of Small and Medium Enterprises (SMEs). A survey was conducted and data were collected from a sample of 175 Senegalese SMEs. The data were analyzed using structural equation modeling in STATA. The results show that some dimensions of a CEO’s market orientation positively influence SMEs’ strategic orientations. The findings imply that CEOs must individually exhibit market-oriented behaviors to encourage the development of strategic orientations in their SME. This study contributes to the development of the literature on individual market orientation by revealing that the CEO’s market orientation constitutes a key factor for the strategic orientation in SMEs
APA, Harvard, Vancouver, ISO, and other styles
2

St. Lawrence, Janet S., David J. Hansen, Teresa F. Cutts, Debra A. Tisdelle, and Jean D. Irish. "Sex Role Orientation." Behavior Modification 9, no. 3 (July 1985): 387–96. http://dx.doi.org/10.1177/01454455850093007.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Williams, Lavon, and Diane L. Gill. "The Role of Perceived Competence in the Motivation of Physical Activity." Journal of Sport and Exercise Psychology 17, no. 4 (December 1995): 363–78. http://dx.doi.org/10.1123/jsep.17.4.363.

Full text
Abstract:
Understanding the role of perceived competence in the motivation of sport and physical activity is an important endeavor. This study attempted to examine the role of perceived competence by (a) investigating its relationship with goal orientations as hypothesized by Nicholls’s theory of achievement motivation, and (b) testing a proposed model linking goal orientations and motivated behavior. Students (N = 174) completed questionnaires assessing goal orientations, perceived competence, intrinsic interest, and effort. Regression analyses revealed that task orientation was a good predictor of effort; however, the interaction of ego orientation and perceived competence failed to adequately predict effort. Path analysis results revealed that task goal orientation, but not ego orientation, directly influenced perceived competence, intrinsic interest, and effort. In addition, intrinsic interest played a mediating role between perceived competence and effort and between task goal orientation and effort.
APA, Harvard, Vancouver, ISO, and other styles
4

Frislia, Ernie, and Seger Handoyo. "THE ROLE OF SELF-CONSTRUAL AND GOAL ORIENTATION ON EMPLOYEE INNOVATIVE WORK BEHAVIOR." Jurnal Psikologi 19, no. 3 (July 8, 2020): 233–45. http://dx.doi.org/10.14710/jp.19.3.233-245.

Full text
Abstract:
Innovation is an effort to increase the companies' competitiveness in Indonesia in the era of the ASEAN Economic Community and confront the fourth industrial era. Innovative work behavior is an organization's methods to implement innovations and improve performance, excellence, competitiveness, and confront changes in the dynamic external environment. This study aims to examine the effect of self-construal and goal orientation on innovative work behavior by testing hypotheses using multiple regression analysis. Data collection in this study uses an innovative work behavior scale, self-construal scale, and goal orientation scale, an online survey method filled by 168 employees working in the manufacturing industry sectors in Indonesia. The results show that self-construal and goal orientation have a positive effect on innovative work behavior, enhancement in self-construal, and goal orientation to increase employees' innovative work behavior—the contribution of goal orientation significant higher for employees' innovative work behavior than for self-construal contributions. Individuals with goal orientations can help organizations to develop innovation through innovative work behavior.
APA, Harvard, Vancouver, ISO, and other styles
5

Gul, Misra Cagla. "The moderating role of environmental munificence on innovativeness in B2B markets." Journal of Business & Industrial Marketing 35, no. 5 (September 30, 2019): 795–802. http://dx.doi.org/10.1108/jbim-04-2019-0153.

Full text
Abstract:
Purpose The purpose of this paper is to understand the relationship between two business orientations, namely, entrepreneurial orientation and market orientation, and innovativeness taking into account the moderating influence of environmental munificence. Design/methodology/approach This is a multiple respondent quantitative study. A total of 312 marketing managers middle level and above from 79 firms participated in the survey. Multiple regression and hierarchical multiple regression was the method of choice for data analysis. Findings Findings indicate that environmental munificence moderates the entrepreneurial orientation – innovativeness relationship. Findings reveal that even though a significant impact of entrepreneurial orientation is not present on innovativeness, this insignificance may be due to environmental munificence. Market orientation has a direct positive impact on innovativeness, and environmental munificence negatively moderates this relationship suggesting that when the environment is less munificent, the market orientation – innovation link becomes stronger. Practical implications Managers should be aware that the more munificent an environment becomes, having an entrepreneurial orientation will be more important for innovativeness. In addition, results of this study suggest that being market oriented more strongly impacts a firm’s ability to innovate in non-munificent environments where growth opportunities are undesirable. Originality/value This study is unique in that it is a multi-respondent study with respondents from different layers of each participating organization, incorporating the moderating impact of the business environment’s munificence on business orientations–innovativeness relationship.
APA, Harvard, Vancouver, ISO, and other styles
6

Matikainen, Minna, Harri Terho, Petri Parvinen, and Anne Juppo. "The role and impact of firm’s strategic orientations on launch performance: significance of relationship orientation." Journal of Business & Industrial Marketing 31, no. 5 (June 6, 2016): 625–39. http://dx.doi.org/10.1108/jbim-12-2014-0250.

Full text
Abstract:
Purpose This study examines the role and relative impact of market orientation, product orientation and relationship orientation on new product launch performance, investigating product advantage and market-based assets as alternative mediating mechanisms, which link these strategic orientations to launch performance. Design/methodology/approach Survey data from the pharmaceutical industry are used to test hypotheses in the research model using partial least squares modeling. Findings Findings show that while each examined strategic orientation relates positively to launch performance, their performance effects and related mechanisms vary significantly. Results demonstrate a firm’s relationship orientation is the strongest predictor of launch performance, and accumulated market-based assets represent an alternative relational mediator besides product advantage linking firms’ orientations and launch performance. Research limitations/implications The empirical study is based on cross-sectional data collected in one specific industry sector. The authors encourage researchers to confirm the key findings in different industry and other contextual settings. Practical implications New product launch can be effectively managed as a relational activity. Firms benefit from paying explicit attention to strategic orientations and relationships. Especially, top management should foster a relationship-oriented organizational culture, develop relational competences and fully use the firm’s accumulated market-based assets for increased launch performance. Originality/value The study extends knowledge on the role of strategic orientations in launch performance by highlighting the significance of relationship orientations and providing novel knowledge on the key mediating mechanisms between strategic orientations and launch performance.
APA, Harvard, Vancouver, ISO, and other styles
7

Kazemian, Soheil, R. Abdul Rahman, Z. Ibrahim, and A. Abideen Adeymi. "AIM’s Accountability in Financial Sustainability: The Role of Market Orientation." International Journal of Trade, Economics and Finance 5, no. 2 (2014): 191–94. http://dx.doi.org/10.7763/ijtef.2014.v5.369.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ngek Neneh, Brownhilder. "Market orientation and performance: the contingency role of external environment." Environmental Economics 7, no. 2 (June 3, 2016): 130–37. http://dx.doi.org/10.21511/ee.07(2).2016.14.

Full text
Abstract:
In today’s business environment characterized by intense competition from globalization and incessantly changing customer needs, market orientation (MO) has been presented as a valuable approach for firms to safeguard themselves against market fluctuations and maintain continuous superior performance. Even though existing literature suggest that MO is a vital driver of business performance, some studies have failed to find its benefits. This is possibly because the MO-performance relationship is has been argued to be context specific and contingent to the business environment. This study thus had as objective to investigate the impact of MO on SME performance, as well as the moderating effects of the external environment on the MO- performance nexus. Using data from South Africa, this study showed that two of the three dimensions of MO (i.e. customer orientation, competitor focus) are significant drivers of business performance and that the MO-performance nexus is moderated by the external environmental factors. Specifically the MO-performance relationship is positively moderated by market turbulence and negative moderated by technological turbulence and competitive intensity. The study culminates with theoretical and practical implications that can be valuable for scholars and businesses operating in South Africa
APA, Harvard, Vancouver, ISO, and other styles
9

Núñez, Juan L., José Martín-Albo, Alberto Paredes, Oliver Rodríguez, and Noemí Chipana. "The mediating role of perceived competence: testing a motivational sequence in university students." Universitas Psychologica 10, no. 3 (July 28, 2010): 669–80. http://dx.doi.org/10.11144/javeriana.upsy10-3.mrpc.

Full text
Abstract:
In order to test the mediating role of perceived competence between each goal orientation (i.e. task and ego orientations) and intrinsic motivation in a motivational sequence in the context of university education, two models based on the cognitive evaluation theory and the achievement goal theory were tested with 276 Bolivian undergraduate students (138 males, 138 females), who completed Spanish versions of instruments designed to assess motivation, perceived competence, and positive emotions and interest. Two models were found with structural equation modeling techniques, one for ego orientation and one for task orientation. Results showed that perceived competence acts as a good mediator in the relation between ego orientation and intrinsic motivation, and as a partial mediator in the relation between task orientation and intrinsic motivation.
APA, Harvard, Vancouver, ISO, and other styles
10

Brumels, Kirk, and Andrea Beach. "Role Orientation of Certified Athletic Trainers at Institutions of Higher Education." Athletic Training Education Journal 3, no. 1 (January 1, 2008): 5–12. http://dx.doi.org/10.4085/1947-380x-3.1.5.

Full text
Abstract:
Objective: This study examined the role orientation hierarchy among teaching, research, service, and administrative responsibilities of certified athletic trainers (ATCs) employed at the collegiate level. Design and Setting: Four single response role orientation questions regarding their actual, ideal, promoted, and most appropriate role orientations were asked as part of a 45 question role complexity internet survey sent to 1,000 randomly selected collegiate ATCs. Subjects: Twenty-nine potential respondents were eliminated from the random sample after administration of the survey due to partial responses and missing data, illness, vacation and job changes. Therefore, out of 971 potential respondents, 348 usable responses were received for a 36% response rate. Measurements: Emphasizing or de-emphasizing each element of responsibility created sixteen different role orientation hierarchies involving teaching, service, research, and administration. Respondents chose one hierarchy to answer each of four questions about their actual, ideal, supervisor recommended, and feelings regarding the most appropriate role orientations for themselves and the profession. Results: Study participants report that service responsibilities were significant aspects of their job. Research was deemed as an important, appropriate, and promoted role orientation, but was not often reported as an actual role orientation. Actual role orientation hierarchies were closely aligned with supervisor expectations, with the exception of research, which was promoted more than it was performed. Conclusions: Collegiate ATCs view service responsibilities as important aspects of their job regardless of their job description, but are not performing research as much as they and their employers feel is important and appropriate for the profession.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Role orientation"

1

Mbuyeleni, N. E. "Value orientation of the adolescent." Thesis, University of Zululand, 2008. http://hdl.handle.net/10530/1134.

Full text
Abstract:
Submitted to the Faculty of Education in fulfillment of the requirements for the Master of Education in the Department of Educational Psychology and Special Education at the University of Zululand, South Africa, 2008.
The aim of this study was to investigate the role of educators in the value orientation of the adolescent. The one thing that transcends language, culture, physical appearance, age and gender is the values a person cherishes and lives by. Vales are essential for life and the normative principles that ensure ease of Hie lived in common. From the literature study it becomes clear that adolescents spend most of their time at school and with their peers, and that their behaviour is shaped by what is happening at school and the values acquired at school serve as a pathway to adulthood. The literature supplied evidence that school educators play an importeint role in influencing the adolescent to adopt positive values. Neither the educator at school, nor parents at home can avoid teaching values through their words and actions. The peer group also plays a key role in the transmission of values. As a result of the adolescent's need to be accepted by the peer group he conforms to the group's values. For the purpose of the empirical investigation a self-structured questionnaire was utilised. The data obtained from the completed questionnaires was processed and analysed by means of descriptive statistics. The findings from the empirical study confirmed that educators play a significant role in the value orientation of the adolescent. In conclusion a summary of the study was presented and based on the findings of the literature and empirical study, the following recommendations were made: > The inculcation of positive values which vdll enable the adolescent to function effectively in society as an adult. > A school environment that is conducive for the effective transfer of healthy value. > Further research ought to be conducted concerning the role of educators in the value orientation of the adolescent.
APA, Harvard, Vancouver, ISO, and other styles
2

Francescucci, Anthony. "Understanding the role of inter-firm market orientation in the market orientation-performance relationship." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/understanding-the-role-of-interfirm-market-orientation-in-the-market-orientationperformance-relationship(c35db6af-bd56-45ba-94b0-6a3076b3ebcb).html.

Full text
Abstract:
The Market orientation (MO) phenomena have been meticulously studied in the marketing literature for more than three decades. While in the beginning MO had been investigated from a focal form perspective, it has evolved to account for the role it plays in distribution channels or supply chains. However, the perspective taken has consistently been from a focal firm perspective, either about its own or its partners market orientation. This study seeks to extend the theory on market orientation to account for the role that it plays within business relationships (i.e. inter-firm market orientation). IMO was initially conceptualized as the joint activities between the focal firm and its channel partner in joint intelligence generation, joint intelligence dissemination and joint customer responsiveness. This study develops the theory that a business relationship can be either market oriented or not and attempts to explain the effect of this inter-firm market orientation on relationship performance as well as focal firm performance. Specifically, this study asks the question, does inter-firm market orientation mediate the focal firm market orientation – performance relationship?This study was investigated using a two-stage approach. In the first stage, a measurement scale was developed and empirically tested to measure inter-firm market orientation. It was from the scale development efforts that the conceptualization of IMO was refined to include the joint intelligence cooperation and joint customer responsiveness efforts between the focal firm and its channel partners. It appears that the focal firm and their channel partner do not differentiate or separate the activities of intelligence generation and intelligence dissemination. They view it more as a cooperative effort. Additionally, the focus of the intelligence cooperation efforts appears to be more about intelligence collected through market research about end-user customers rather than by speaking with customers directly. Finally, the customer responsiveness efforts appear to be reactively focused rather than both reactively and proactively. The scale development was followed by the second stage where the revised IMO construct was included in a model in which it mediated the often-studied market orientation – performance relationship. A number of hypotheses were developed using various relationship theories such as transaction cost economics, resource-based view, and interaction approach. The model was tested with a sample of 130 informants using a variance-based structural equation modeling technique called partial least squares. The final analysis indicated that all paths were significant and that the IMO and relationship performance constructs partially mediated the MO – performance relationship. These findings suggest that it is important to understand both intra and inter-firm market orientation activities to truly understand their impact on business performance.
APA, Harvard, Vancouver, ISO, and other styles
3

Hudepohl, Adam David. "Determinants of Group Perpetrated Violence Based on Sexual Orientation." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/psych_theses/56.

Full text
Abstract:
The purpose of this study was to examine group perpetrated antigay violence. Specifically, the effects of MGRS, peer dynamics, and increases in negative affect on antigay aggression were examined. The differential utility of aggression toward gay and heterosexual targets in relieving a state of negative affect (e.g., anger, fear) was also evaluated. Participants completed questionnaires that included a measure of MGRS, and then were assigned to one of three group conditions(individual, stranger, and friend). Participants then viewed a video depicting male-male intimacy and competed in the TAP against either a fictitious gay or heterosexual opponent. Results showed a main effect for condition, such that higher levels of aggression were observed in the group, relative to the individual, conditions. Analyses also revealed a significant positive relation between MGRS and aggression among participants competing with a stranger against a heterosexual opponent. Neither condition nor opponent differentially predicted changes in negative affect.
APA, Harvard, Vancouver, ISO, and other styles
4

Mallon, Jacqueline Ann. "Gender and undergraduate mathematics students : attitudes, beliefs and percieved sources of encouragement/support." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336737.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Thorsen, Philip Edward Lamke Leanne K. "Trust in dating relationships the role of communal orientation /." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Fall/Theses/THORSEN_PHILIP_11.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Sirois, Fuschia M., A. Wood, and Jameson K. Hirsch. "Gratitude and Health Behaviors: The Role of Future Orientation." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/610.

Full text
Abstract:
Background: Gratitude is an orientation towards the positive in life that increasingly is shown to have relevance for physical health. Less is known about how gratitude relates to health behaviours. The self-regulation resource model (SRRM) posits that future-orientation is a resource that promotes selfregulation of health behaviours. Accordingly, we meta-analytically tested whether gratitude was associated with the practice of health-promoting behaviours, and if future-orientation explained the association. Methods: Data from 14 samples (N = 4,111) from our labs were included in the meta-analysis as there was no published data. All samples completed measures of state or trait gratitude, and a measure of health behaviour frequency; six samples completed a measure of future orientation/self-continuity. Random effects metaanalysis was conducted on the correlations of gratitude with health behaviours, with subgroup analyses. Indirect effects through FO were tested and meta-analysed. Findings: Across all 14 samples, gratitude was significantly associated with more frequent health behaviours, avg. r = .261, [.22, .31]. The effects did not vary significantly across sample type (student/community), or gratitude measure (state/trait). Mediation analyses revealed significant indirect effects of gratitude on health behaviours through future-orientation in the six samples tested (N = 2,828), with an average index of mediation of beta = .068 [.05, .08]. The direct effects remained significant. Discussion: Findings are consistent with the SRRM and demonstrate that gratitude is associated with the practice of health-promoting behaviours, due in part to future-orientation. Further research is warranted to more fully investigate the potential of gratitude for promoting health behaviours.
APA, Harvard, Vancouver, ISO, and other styles
7

Quesada, Hernandez Elena. "The Role of Cell Division Orientation during Zebrafish Early Development." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-64735.

Full text
Abstract:
The development of multicellular organisms is dependent on the tight coordination between tissue growth and morphogenesis. The stereotypical orientation of cell divisions has been proposed to be a fundamental mechanism by which proliferating and growing tissues take shape. However, the actual contribution of stereotypical cell division orientation (SDO) to tissue morphogenesis is unclear. In zebrafish, cell divisions with stereotypical orientation have been implicated in both body axis elongation and neural rod formation, although there is little direct evidence for a critical function of SDO in either of these processes. Making use of extended time-lapse, multi-photon microscopy and a careful three-dimensional analysis of cell division orientation, we show that SDO is required for neural rod midline formation during neurulation, but dispensable for body axis elongation during gastrulation. Our data indicate that SDO during both gastrulation and neurulation is dependent on the non-canonical Wnt receptor Frizzled 7 (Fz7), and that interfering with cell division orientation leads to severe defects in neural rod midline formation, but not body axis elongation. These findings suggest a novel function for Fz7 controlled cell division orientation in neural rod midline formation during neurulation. They also shed new light on the field of cell division orientation by uncoupling it from tissue elongation.
APA, Harvard, Vancouver, ISO, and other styles
8

Murphy, Kellie Ann. "Parent involvement and student retention| The role of orientation programs." Thesis, Washington State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3628860.

Full text
Abstract:

The increasing numbers of incoming student orientation programs, combined with greater parental involvement aimed at facilitating their children's arrival on campus and smooth transition to college life, has resulted in a surge of parent orientation programs, over the past two decades (Lynch, 2006; Merriman, 2007). New student orientation programs are designed to prepare them for the academic and social changes which occur upon entering college. Although orientation is often used as a retention tool, the possible ramifications parental attendance on students during this critical transition into college, has been overlooked (Coburn & Woodward, 2001; Mann, 1998; Tinto, 1993; Wartman & Savage, 2008). Since Tinto's first publication in 1985, much of the research related to student retention has been directly tied to his Student Integration Theory (Pascarella & Terenzini, 2005).

Although Tinto acknowledges the contributions economic and psychological experiences may have on the student's likelihood of being retained, unlike theorists before him, Tinto's model focuses more on experiences the student encounters after coming to college, rather than those occurring prior to college. Tinto's findings call for students to separate themselves completely from their past communities, in order to successfully transition into their new community. This study challenges Tinto's logic of complete separation from one's past and explores further the relationship and impact parent attendance during student orientation has on full-time, first-year retention rates.

The results of this study indicate there is a positive relationship between parent attendance during orientation and first-year student retention. Moreover, parent attendance in student orientations was found to be a positive-predictor of student retention. These results are in opposition to Tinto's imperative that retention is enhanced when students make a complete separation from pre-college communities, and reveals instead the positive impact parent involvement has on first-year retention. While the study is not intended to answer all questions surrounding parent inclusion as related to college student retention, it does point future researchers in a new direction when seeking additional insight regarding policies and practices surrounding parent involvement and student retention.

APA, Harvard, Vancouver, ISO, and other styles
9

Huang, Xianwen, and Hsien Wen Huang. "An examination of the role orientation of planners in Taipei." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/44651.

Full text
Abstract:
This research project explores the professional ideology of planners in a new industrialized setting - Taipei,Taiwan. This study seeks to establish whether urban planners in a newly industrializing country (NIC) exhibit consistent sets of values, attitudes and role orientations that parallel those of Western planners. In addition, in an authoritarian party-state such as Taiwan, planning is a top-down process. Development goals are set at the top of the political bureaucracy; therefore, plans are formulated to meet predesigned objectives, especially in terms of economic development. Since economic growth is seen by some as a legitimation device for the existing authoritarian regime in Taiwan, the role of planning vis a vis the partnership between the state and capitalists is worth examining. The data used in this study are drawn from questionnaire surveys of public-sector urban planners working in Taipei city. The survey was conducted between May and August 1988. The sample size of 128 planners was determined based on estimates provided by each departmental head within Taipei Municipal Government. An overall response rate of 69%, and a valid response rate of 66% was achieved.

A prominent pattern that emerged in examining the results of the survey is the strong rational and apolitical orientation of Taipei's planners. The pervasiveness of rational and apolitical leanings among planners is partly a reflection of an authoritarian state the protects its own legitimacy while promoting economic development. The prevalence of apolitical attitudes among planners in top-down decision making environments exacerbates difficulties in the implementation of plans and programs. Hence, planners working with implementation units, and carrying out plans formulated by planning units are more cognizant of the importance of public participation. In addition, they are more skeptical about planning activities in Taipei city than their counterparts working in planning units. In conclusion, it is suggested that although most planners believe in the apolitical and rational nature of planning, planners with formal planning educations tend to recognize the inherently political nature of planning to a greater extent than those without planning educations. Since planning education is obviously one of the determinants in shaping the role and value orientations of planners, especially with respect to their recognition of political influences, planning curricula that better focus on those aspects may be emphasized.
Master of Urban Affairs

APA, Harvard, Vancouver, ISO, and other styles
10

Tcaci, Popescu Sergiu. "The role of spontaneous movements in spatial orientation and navigation." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEH005/document.

Full text
Abstract:
Les gens produisent des mouvements spontanés pendant des tâches de raisonnement spatial. Ces mouvements aident-ils à la performance de la tâche? Nous avons étudié le rôle des mouvements spontanés dans l'orientation spatiale en utilisant des tâches de prise de perspective spatiale (PPS) dans lesquelles les participants devaient imaginer un point de vue différent de leur point de vue actuel. Nous nous sommes concentrés sur des perspectives exigeant des rotations mentales de soi - particulièrement difficiles, elles sont grandement facilitées par un mouvement actif, même en l'absence de vision. La contribution motrice à la performance de la tâche pourrait résulter d'un mécanisme prédictif, qui anticipe les conséquences d'une action avant son exécution, comme un modèle d'anticipation interne (Wolpert & Flanagan, 2001), inhibant par la suite l’exécution du mouvement si nécessaire. Les mouvements observés peuvent être des traces visibles de ce processus. En utilisant un système de capture de mouvements, nous avons montré que les rotations de la tête sont géométriquement liées à la PPS : leur direction et amplitude étaient liées à la direction et à l'angle entre les perspectives réelles et imaginée (Exp. 1). Chez les contrôleurs aériens, qualifiés ou apprentis, seule la direction de la rotation de la tête était liée à la PPS, reflétant probablement l'expertise spatiale ainsi que le rôle crucial de la direction dans la rotation mentale (Exp. 2). Dans un environnement virtuel, les rotations de tête spontanées étaient liées à une performance accrue. Cependant, les rotations volontaires, qui imitent celles qui sont produites spontanément, ne facilitent pas la performance de navigation (Exp. 3), mais l'empêchent lorsqu’elles sont contraires à la direction de la rotation virtuelle. Nos résultats suggèrent une contribution motrice spécifique à l'orientation spatiale, compatible avec la prédiction motrice
People produce spontaneous movements during spatial reasoning tasks. Do they relate to task performance? We investigated the role of spontaneous movements in spatial orientation using spatial perspective-taking (SPT) tasks where participants adopted imaginary perspectives. We focused on imaginary perspectives requiring mental rotations of the self as they are particularly difficult and greatly facilitated by active movement in the absence of vision. Motor contribution to task performance could result from a predictive mechanism, which anticipates the consequences of an action before its execution, such as an internal forward model (Wolpert & Flanagan, 2001), further inhibiting full rotations of the head. Observed movements may be visible traces of this process. Using motion capture, we showed that head movements are geometrically related to SPT: both the direction and amplitude of head rotations were related to the direction and angle between the actual and imagined perspectives (Exp. 1). In air traffic controllers and apprentices, only the direction of head rotation was related to SPT, probably reflecting spatial expertise and its crucial role in mental rotation (Exp. 2). In a virtual environment, spontaneous head rotations were related to increased performance. However voluntary rotations, emulating the spontaneously produced ones, did not facilitate navigation performance (Exp. 3), but hindered it when inconsistent with the direction of virtual rotation. Overall, our findings suggest a specific motor contribution to spatial orientation consistent with motor prediction
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Role orientation"

1

Tardif-Douglin, David Gregory. The role of sweet potato in Rwanda's food system: The transition from subsistence orientation to market orientation. Bethesda, Md: Development Alternatives, Inc, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Garba, Joseph Nanven. International re-orientation and the emerging global groupthink: Nigeria's role : lecture. Lagos, Nigeria: Nigerian Institute of Advanced Legal Studies, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

1937-, Black Franklin O., and United States. National Aeronautics and Space Administration., eds. Role of orientation reference selection in motion sickness: Semiannual status report. Portland, OR: R.S. Dow Neurological Sciences Institute and Clinical Vestibular Lab, Good Samaritan Hospital & Medical Center, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

1937-, Black Franklin O., and United States. National Aeronautics and Space Administration., eds. Role of orientation reference selection in motion sickness: Semiannual status report. Portland, OR: Robert S. Dow Neurological Sciences Institute and Dept. of Neuro-otology, Good Samaritan Hospital and Medical Center, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

1937-, Black Franklin O., and United States. National Aeronautics and Space Administration., eds. Role of orientation reference selection in motion sickness: Semiannual status report. Portland, OR: R.S. Dow Neurological Sciences Institute and Clinical Vestibular Lab, Good Samaritan Hospital & Medical Center, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Love is an orientation: Elevating the conversation with the gay community. Downers Grove, Ill: IVP Books, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

The origins and role of same-sex relations in human societies. Jefferson, N.C: McFarland & Co., 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Howard, Julie. Information skills in TVEI and the role of the librarian. [London]: British Library Research and Development Dept., 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Fast facts for the medical-surgical nurse: Clinical orientation in a nutshell. New York: Springer Publishing Company, 2015.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Seminário, Latino-Americano de Geografia e. Gênero: Espaço Gênero e. Poder (1st 2011 Rio de Janeiro Brazil). Espaço, gênero e poder: Conectando fronteiras. Ponta Grossa, Paraná: Todapalavra Editora, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Role orientation"

1

Carman, Raymond V. "The Judicial Role Orientation." In Making Good Law or Good Policy?, 11–41. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53381-0_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zuo, Jiping. "Women’s Domestic-Role Orientation." In Work and Family in Urban China, 97–117. London: Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1057/978-1-137-55465-9_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Zhang, David Di. "Beyond Market Orientation: Exploring the Role of Entrepreneurial Orientation." In Developments in Marketing Science: Proceedings of the Academy of Marketing Science, 258. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-11806-2_110.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Dealy, John M., and Kurt F. Wissbrun. "Rheo-Optics and Molecular Orientation." In Melt Rheology and Its Role in Plastics Processing, 345–64. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-009-2163-4_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Dealy, John M., and Kurt F. Wissbrun. "Rheo-Optics and Molecular Orientation." In Melt Rheology and Its Role in Plastics Processing, 345–64. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4615-9738-4_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Anderson, Brian S. "Sustaining EO and the Role of the CEO." In Entrepreneurial Orientation and Strategic Leadership, 29–38. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-87300-4_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Anderson, Brian S. "Extending EO and the Role of the Top Management Team." In Entrepreneurial Orientation and Strategic Leadership, 51–59. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-87300-4_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Odling-Smee, Lucy, Stephen D. Simpson, and Victoria A. Braithwaite. "The Role of Learning in Fish Orientation." In Fish Cognition and Behavior, 166–85. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9781444342536.ch8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Carman, Raymond V. "The Development of the Judicial Role Orientation." In Making Good Law or Good Policy?, 77–104. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53381-0_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Carman, Raymond V. "The Impact of the Judicial Role Orientation." In Making Good Law or Good Policy?, 105–32. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53381-0_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Role orientation"

1

Gorea, Andrei, and Thomas V. Papathomas. "Role of color and orientation matching in texture discrimination." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.wcc3.

Full text
Abstract:
Motion perception can be elicited by the spatiotemporal matching of practically all visual attributes. The matching of some of them is effective in eliciting motion perception whether or not the remaining attributes are coherently matched. The mismatching of some of them (which we call veto attributes, e.g., color, spatial frequency, disparity) may disrupt and possibly cancel motion perception normally elicited by the matching of any of the remaining attributes. Our present results suggest that the above principles of visual spatiotemporal organizations also govern 2-D spatial grouping. Our experiments were designed to measure discriminability of texture pairs constructed by coherently matching either color or orientation or both in the (x, y) plane. The results show that (1) the strength of grouping is higher for color than for orientation matching, (2) color as well as orientation grouping is possible whether the textures are presented on a black background or in equiluminant conditions, and that (3) orientation grouping is impossible in equiluminant conditions when the orientation is matched across different colors, whereas color matching is possible across orientations.
APA, Harvard, Vancouver, ISO, and other styles
2

Zheng, Xin, and Yi Cui. "Entrepreneurial Orientation, Market Orientation and Firm Performance: The Mediator Role of Organizational Learning." In 2007 International Conference on Wireless Communications, Networking and Mobile Computing. IEEE, 2007. http://dx.doi.org/10.1109/wicom.2007.1083.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lee, Chung-Shing, Leong Chan, and David E. McNabb. "The Role of Strategic Orientation in Business Innovation." In 2017 Portland International Conference on Management of Engineering and Technology (PICMET). IEEE, 2017. http://dx.doi.org/10.23919/picmet.2017.8125241.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Levi, Dennis M. "Role of orientation and position in Vernier acuity." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.tur7.

Full text
Abstract:
When three-dot Vernier acuity is measured as a function of separation, thresholds are approximately proportional to the separation of the dots. One interpretation for this result is that the visual system responds to a fixed orientation cue. An alternative hypothesis is that Vernier thresholds depend on positional information, so that as the separation and, therefore, the eccentricity of the reference dots increase, positional uncertainty increases, resulting in thresholds being proportional to the eccentricity/separation of the reference dots. To distinguish between these two hypotheses, separation was pitted against eccentricity. Vernier thresholds were measured for stimuli presented on an isoeccentric arc, so that separation could be varied while holding the eccentricity of the test stimuli constant.1 Measurements were made with isoeccentric arcs at eccentricities from 0.625 to 10°. At each eccentricity, there was a range of small separations (less than half of the eccentricity) over which thresholds were proportional to separation. In this range, stimulus duration had a marked effect, as may be expected if Vernier thresholds depend on orientation tuned filters. At larger separations, Vernier thresholds were independent of separation and of stimulus duration but varied systematically with the eccentricity of the isoeccentric arc. The results suggest that both position and orientation cues are important but that they operate to limit performance over different ranges of separation.
APA, Harvard, Vancouver, ISO, and other styles
5

"The Role of Digital Orientation and Market Orientation in Generating Marketing Capability in SMEs." In European Conference on Innovation and Entrepreneurship 2021. Academic Conferences International Ltd, 2021. http://dx.doi.org/10.34190/eie.21.012.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Akdağ, Hakan. "Entrepreneurship Orientation And Market Performance: Mediating Role Of Learningcapability." In Joint Conference ISMC 2018-ICLTIBM 2018 - 14th International Strategic Management Conference & 8th International Conference on Leadership, Technology, Innovation and Business Management. Cognitive-Crcs, 2019. http://dx.doi.org/10.15405/epsbs.2019.01.02.72.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zhen Lin. "The role orientation of the government in entrepreneurial economy." In 2011 International Conference on Computer Science and Service System (CSSS). IEEE, 2011. http://dx.doi.org/10.1109/csss.2011.5972074.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Dienes, J. K. "On the Role of Crack Orientation in Brittle Failure." In SHOCK COMPRESSION OF CONDENSED MATTER - 2003: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2004. http://dx.doi.org/10.1063/1.1780274.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Qu, Chao, and Bertram E. Shi. "The role of orientation diversity in binocular vergence control." In 2011 International Joint Conference on Neural Networks (IJCNN 2011 - San Jose). IEEE, 2011. http://dx.doi.org/10.1109/ijcnn.2011.6033511.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Jeong, Dae-Yul, Sung-Min Kim, and Dong-Ju Yoon. "Customer Orientation and Organizational Performance: Mediating Role of CRM." In Business 2014. Science & Engineering Research Support soCiety, 2014. http://dx.doi.org/10.14257/astl.2014.57.09.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Role orientation"

1

Kwon, Wi-Suk, Sang-Eun Byun, Jeffrey Katz, Gopikrishna Deshpande, and Sandra Forsythe. Scarcity Effects on Consumers' Affective, Cognitive, and Conative Responses: Moderating Role of Shopping Orientation. Ames: Iowa State University, Digital Repository, November 2016. http://dx.doi.org/10.31274/itaa_proceedings-180814-1502.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cavalli, Nicolò. Future orientation and fertility: cross-national evidence using Google search. Verlag der Österreichischen Akademie der Wissenschaften, December 2020. http://dx.doi.org/10.1553/populationyearbook2020.res06.

Full text
Abstract:
Using digital traces to investigate demographic behaviours, I leverage in this paper aggregated web search data to develop a Future Orientation Index for 200 countries and territories across the world. This index is expressed as the ratio of Google search volumes for ‘next year’ (e.g., 2021) to search volumes for ‘current year’ (e.g., 2020), adjusted for country-level internet penetration rates. I show that countries with lower levels of future orientation also have higher levels of fertility. Fertility rates decrease quickly as future orientation levels increase; but at the highest levels of future orientation, this correlation flattens out. Theoretically, I reconstruct the role that varying degrees of future orientation might play in fertility decisions by incorporating advances in behavioural economics into a traditional quantity-quality framework à la Becker.
APA, Harvard, Vancouver, ISO, and other styles
3

Behn, Joan. An investigation of possible relationships between sex-role orientation, the motive to avoid success and the inhibition of aggression in women. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2060.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Sergeyev, Mykola. Ukrainian National Idea in the Modern Ukrainian Media Space. Ivan Franko National University of Lviv, February 2022. http://dx.doi.org/10.30970/vjo.2022.51.11407.

Full text
Abstract:
M. Sergeyev’s article “Ukrainian National Idea in the Modern Ukrainian Media Space” states that modern Ukrainian philosophical thought tries to get rid of the flaws and stereotypes of its one-sided orientation “to the East” and tries to establish a European orientation in the minds of Ukrainian citizens. The theoretical proof of the new worldview took place throughout the formation of the Ukrainian state from Little Russia to Ukraine and presents its actual struggle for independence. It is an integral concept that reflects the process of forming theories and views of prominent Ukrainian thinkers on the place and role of Ukrainians in the becoming and development of an independent Ukrainian state. As O. Zabuzhko emphasizes, “all Ukrainian philosophical, historical, sociological thought of the past and our centuries (including the diaspora) is permeated with the sacred idea of nationalism”. The author concludes that the logic of the historical development of the Ukrainian national idea reveals only one model of its socio-political future, which implies the need for Ukraine’s integration into the European and world community. This path requires the moral and political readiness of the entire Ukrainian society for its implementation and prevents the emergence of any other - alternative ideas. Solving this problem is complicated by the need to return to Ukraine the temporarily occupied territories of Crimea, Luhansk and Donetsk regions. Of course, this model will lead to significant political and economic tensions in society (the final severance of economic relations with Russia, the closure of non-competitive industries, the outflow of labor to the west). At the same time, the orientation of the Ukrainian national idea to the west will increase competition in all branches of production and will be a condition for further self-improvement of Ukrainian society.
APA, Harvard, Vancouver, ISO, and other styles
5

Tarasenko, Rostyslav O., Svitlana M. Amelina, and Albert A. Azaryan. Features of the use of cloud-based translation systems in the process of forming information competence of translators. [б. в.], September 2019. http://dx.doi.org/10.31812/123456789/3256.

Full text
Abstract:
The current trends in the translator training are shown, which reflect the orientation towards the use of cloud-based automated translation systems. The possibilities of studying cloud-based translation systems in the educational process of training the translator are considered. The role of mastering modern translation tools for forming information competence of translators, particularly technological component, was described. The definition of the list and type of basic translation tools that should be mastered in the studying process was discussed. These tools should include automated translation systems and terminological management systems. It is advisable to provide for the study of both desktop and cloud-based systems. The inclusion in the content of the training translators the study of cloud-based systems of automated translation after desktop systems is proposed. A number of advantages of cloud-based translation systems for the use in the process of training the translators is defined and substantiated. A comparative analysis of the functional of cloud-based automated translation systems (Wordfast Anywhere, XTM Cloud, and MemSource) with the aim of including them in the content of the training program for translators has been carried out.
APA, Harvard, Vancouver, ISO, and other styles
6

Landolt, Peter, Ezra Dunkelblum, Robert R. Heath, and Moshe Kehat. Host Plant Chemical Mediation of Heliothis Reproductive Behavior. United States Department of Agriculture, October 1992. http://dx.doi.org/10.32747/1992.7568753.bard.

Full text
Abstract:
Phytophagous insects respond to chemicals from their host plants in a number of ways, including orientation or attraction in response to volatiles produced by plants. Orientation to odors from host plants may occur in order to locate food, mates, or oviposition sites. A detailed understanding of these behaviors are the chemical stimuli evoking them may provide useful means for attracting and trapping insect pests of crop plants. Heliothine moths (Helicoverpa and Heliothis herein) include a number of major pests of cultivated crop plants throughout the world. In North America, these include Heliothis virescens and Helicoverpa zea. In much of Eurasia (including Israel) Australia, and Africa, these include Helicoverpa armigera and Helicoverpa peltigera. These 4 species of concern all are attracted to odorants from host plants (Tingle and Mitchell 2992, Mitchell et al 1991, 1992 BARD feasibility study report). Host plant chemicals also play a role in the sexual behavior of Helicoverpa species. Synthesis and possibly release of sex pheromone in H. zea and H. phloxiphaga is stimulated by kairomones from hosts plants (Raina 1988, 1992). Pheromona scent marking on host plants also occurs in H. virescens and H. zea. Studies of several other insects, including the cabbage looper Trichoplusia ni, have a variety of other behaviors may occur in association with host plants, including the use of plants as sexual rendesvous sites and of direct involvement of plant chemicals in sexual behavior. Some pest species of moths also may use host plants as adult food sources. These studies were undertaken to develop a more thorough understanding of how Heliothis/Helicoverpa moths use host plant odorants to locate and select foods, mates, and oviposition sites. We used Heliothis virescens and Helicoverpa zea in Florida, and Helicoverpa armigera and Helicoverpa peltigera in Israel as objects of study because of their pest status. It is hoped that such an understanding will provide direction for work to discover and develop novel means to control these pests through behavioral manipulation. The specific objectives of the proposal were to 1) identify host odor affects on known Heliothine sexual behavior, 2) identify novel sexual behavior that is how dependent, 3) isolate and characterize host kairomones important to pest Heliothine host and mate-location behavior, and 4) investigate female attraction to males.
APA, Harvard, Vancouver, ISO, and other styles
7

Habib, Ayman, Darcy M. Bullock, Yi-Chun Lin, Raja Manish, and Radhika Ravi. Field Test Bed for Evaluating Embedded Vehicle Sensors with Indiana Companies. Purdue University, 2023. http://dx.doi.org/10.5703/1288284317385.

Full text
Abstract:
With the advent of modern sensing technology, mapping products have begun to achieve an unprecedented precision of measurement. Considering their diverse use cases, several factors play a role in what would make the resulting measurements accurate. For light detection and ranging (LiDAR) and photogrammetry-based mapping solutions that implement vehicles outfitted with laser ranging devices, RGB cameras, and global navigation satellite system/inertial navigation system (GNSS/INS) georeferencing units, the quality of the derived mapping products is governed by the combined accuracy of the various sensors. While ranging errors associated with LiDAR systems or the imaging quality of RGB cameras are sensor-dependent and are mostly constant, the accuracy of a georeferencing unit depends on a variety of extrinsic factors, including but not limited to, availability of clear line-of-path to GNSS satellites and presence of radio interferences. The quality of the GNSS signal, in turn, is affected by the grade of hardware components used and, to a great extent, obstructions to signal reception. This document reports some of the major challenges of vehicle-based mobile mapping with regards to GNSS/INS navigation. The background of GNSS/INS positioning is discussed to build a framework for trajectory enhancement as well as improvement of LiDAR mapping products. The focus is put on using available sensor data from LiDAR and/or cameras to enhance their position/orientation quality. Some best practices in light of potential trajectory deterioration are also recommended.
APA, Harvard, Vancouver, ISO, and other styles
8

McGrath, Robert E., and Alejandro Adler. Skills for life: A review of life skills and their measurability, malleability, and meaningfulness. Inter-American Development Bank, August 2022. http://dx.doi.org/10.18235/0004414.

Full text
Abstract:
It is widely accepted that schools and other settings catering to youth can play an essential role in offering education in life skills and character. However, there exists a broad array of potential targets for such programs, suggesting the need for guidance on which targets are most likely to result in demonstrable and valuable results. This report attempts to integrate a broad literature addressing the universe of targets for skills development programs for youth. After identifying a set of 30 candidate skills to investigate further, research literature was reviewed to evaluate each skill on three dimensions. Measurability had to do with the extent to which adequate measurement tools were available for evaluating skill level, with emphasis on those tools specifically used for younger populations and available in multiple languages, particularly in Spanish. Malleability had to do with the extent to which there is evidence that interventions have the potential to modify skill level, with emphasis on those that have been extensively evaluated through randomized controlled trials. Finally, meaningfulness had to do with the extent to which evidence exists demonstrating that the higher levels of skill can result in consequential outcomes. Based on these criteria, 10 skills were selected for further review as having the most compelling evidence to date that they are life skills that matter: Mindfulness, Empathy and compassion, Self-efficacy/ Self-determination, Problem solving, Critical thinking, Goal orientation and goal completion, Resilience/Stress resistance, Self-awareness, Purposefulness, and Self-regulation/Self-control/Emotion regulation. The evidence for each is summarized. We finish with a review of key issues to consider in the design, implementation, and evaluation of life skills that matter.
APA, Harvard, Vancouver, ISO, and other styles
9

Mawassi, Munir, Adib Rowhani, Deborah A. Golino, Avichai Perl, and Edna Tanne. Rugose Wood Disease of Grapevine, Etiology and Virus Resistance in Transgenic Vines. United States Department of Agriculture, November 2003. http://dx.doi.org/10.32747/2003.7586477.bard.

Full text
Abstract:
Rugose wood is a complex disease of grapevines, which occurs in all growing areas. The disease is spread in the field by vector transmission (mealybugs). At least five elongated-phloem- limited viruses are implicated in the various rugose wood disorders. The most fully characterized of these are Grapevine virus A (GV A) and GVB, members of a newly established genus, the vitivirus. GVC, a putative vitivirus, is much less well characterized than GV A or GVB. The information regarding the role of GVC in the etiology and epidemiology of rugose wood is fragmentary and no sequence data for GVC are available. The proposed research is aimed to study the etiology and epidemiology of rugose wood disease, and to construct genetically engineered virus-resistant grapevines. The objectives of our proposed research were to construct transgenic plants with coat protein gene sequences designed to induce post-transcriptional gene silencing (pTGS); to study the epidemiology and etiology of rugose wood disease by cloning and sequencing of GVC; and surveying of rugose wood- associated viruses in Californian and Israeli vineyards. In an attempt to experimentally define the role of the various genes of GV A, we utilized the infectious clone, inserted mutations in every ORF, and studied the effect on viral replication, gene expression, symptoms and viral movement. We explored the production of viral RNAs in a GV A-infected Nicotiana benthamiana herbaceous host, and characterized one nested set of three 5'-terminal sgRNAs of 5.1, 5.5 and 6.0 kb, and another, of three 3'-terminal sgRNAs of 2.2, 1.8 and 1.0 kb that could serve for expression of ORFs 2-3, respectively. Several GV A constructs have been assembled into pCAMBIA 230 I, a binary vector which is used for Angrobacterium mediated transformation: GV A CP gene; two copies of the GV A CP gene arranged in the same antisense orientation; two copies of the GV A CP gene in which the downstream copy is in an antigens orientation; GV A replicase gene; GV A replicase gene plus the 3' UTR sequence; and the full genome of GV A. Experiments for transformation of N. benthamiana and grapevine cell suspension with these constructs have been initiated. Transgenic N. benthamiana plants that contained the CP gene, the replicase gene and the entire genome of GV A were obtained. For grapevine transformation, we have developed efficient protocols for transformation and successfully grapevine plantlets that contained the CP gene and the replicase genes of GV A were obtained. These plants are still under examination for expression of the trans genes. The construction of transgenic plants with GV A sequences will provide, in the long run, a means to control one of the most prevalent viruses associated with grapevines. Our many attempts to produce a cDNA library from the genome of GVC failed. For surveying of rugose wood associated viruses in California vineyards, samples were collected from different grape growing areas and tested by RT-PCR for GV A, GVB and GVD. The results indicated that some of the samples were infected with multiple viruses, but overall, we found higher incidence of GVB and GV A infection in California vineyards and new introduction varieties, respectively. In this research we also conducted studies to increase our understanding of virus - induced rootstock decline and its importance in vineyard productivity. Our results provided supporting evidence that the rootstock response to virus infection depends on the rootstock genotype and the virus type. In general, rootstocks are differ widely in virus susceptibility. Our data indicated that a virus type or its combination with other viruses was responsible in virus-induced rootstock decline. As the results showed, the growth of the rootstocks were severely affected when the combination of more than one virus was present.
APA, Harvard, Vancouver, ISO, and other styles
10

Minot, Nicholas, Shahadat Hossain, Razin Kabir, Paul A. Dorosh, and Shahidur Rashid. Rice price stabilization in Bangladesh: Assessing the impact of public farm-gate and consumer price stabilization policy instruments on the overall grain market and developing policy orientations with a greater role for the private sector. Washington, DC: International Food Policy Research Institute, 2021. http://dx.doi.org/10.2499/p15738coll2.134539.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Role orientation' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography