University of Rochester

About: University of Rochester is a education organization based out in Rochester, New York, United States. It is known for research contribution in the topics: Population & Laser. The organization has 63915 authors who have published 112762 publications receiving 5484122 citations. The organization is also known as: Rochester University.

Wolbachia: master manipulators of invertebrate biology.

Abstract: Wolbachia are common intracellular bacteria that are found in arthropods and nematodes. These alphaproteobacteria endosymbionts are transmitted vertically through host eggs and alter host biology in diverse ways, including the induction of reproductive manipulations, such as feminization, parthenogenesis, male killing and sperm-egg incompatibility. They can also move horizontally across species boundaries, resulting in a widespread and global distribution in diverse invertebrate hosts. Here, we review the basic biology of Wolbachia, with emphasis on recent advances in our understanding of these fascinating endosymbionts.

Facilitating Optimal Motivation and Psychological Well- Being Across Life's Domains

Abstract: Self-determination theory (SDT) differentiates motivation, with autonomous and controlled motivations constituting the key, broad distinction. Research has shown that autonomous motivation predicts persistence and adherence and is advantageous for effective performance, especially on complex or heuristic tasks that involve deep information processing or creativity. Autonomous motivation is also reliably related to psychological health. Considerable research has found interpersonal contexts that facilitate satisfaction of the basic psychological needs for competence, autonomy, and relatedness to enhance autonomous motivation, which comprises intrinsic motivation and well-internalized extrinsic motivation. SDT has been applied in varied cultures and in many life domains, and research is reviewed that has related autonomous and controlled motivation to education, parenting, work, health care, sport, and close relationships.

Whole-body hypothermia for neonates with hypoxic-ischemic encephalopathy.

Abstract: background Hypothermia is protective against brain injury after asphyxiation in animal models. However, the safety and effectiveness of hypothermia in term infants with encephalopathy is uncertain. methods We conducted a randomized trial of hypothermia in infants with a gestational age of at least 36 weeks who were admitted to the hospital at or before six hours of age with either severe acidosis or perinatal complications and resuscitation at birth and who had moderate or severe encephalopathy. Infants were randomly assigned to usual care (control group) or whole-body cooling to an esophageal temperature of 33.5°C for 72 hours, followed by slow rewarming (hypothermia group). Neurodevelopmental outcome was assessed at 18 to 22 months of age. The primary outcome was a combined end point of death or moderate or severe disability. results Of 239 eligible infants, 102 were assigned to the hypothermia group and 106 to the control group. Adverse events were similar in the two groups during the 72 hours of cooling. Primary outcome data were available for 205 infants. Death or moderate or severe disability occurred in 45 of 102 infants (44 percent) in the hypothermia group and 64 of 103 infants (62 percent) in the control group (risk ratio, 0.72; 95 percent confidence interval, 0.54 to 0.95; P=0.01). Twenty-four infants (24 percent) in the hypothermia group and 38 (37 percent) in the control group died (risk ratio, 0.68; 95 percent confidence interval, 0.44 to 1.05; P=0.08). There was no increase in major disability among survivors; the rate of cerebral palsy was 15 of 77 (19 percent) in the hypothermia group as compared with 19 of 64 (30 percent) in the control group (risk ratio, 0.68; 95 percent confidence interval, 0.38 to 1.22; P=0.20). conclusions Whole-body hypothermia reduces the risk of death or disability in infants with moderate or severe hypoxic–ischemic encephalopathy.

Towards A Positive Theory of the Determination of Accounting Standards

Abstract: This article provides the beginning of a positive theory of accounting by exploring those factors influencing management's attitudes on accounting standards that are likely to affect a firm's cashflows and in turn are affected by accounting standards. These factors are taxes, regulation, management compensation plans, bookkeeping costs and political costs, and they are combined into a model that predicts that large firms that experience reduced earnings due to changed accounting standards favor the change. All other firms oppose the change if the additional bookkeeping costs justify the cost of lobbying. This prediction was tested using the corporate submissions to the FASB's Discussion Memorandum on General Price Level Adjustments. The empirical results are consistent with the theory.

Approach and avoidance achievement goals and intrinsic motivation: A mediational analysis.

Abstract: nMost contemporary achievement goal conceptualizations consist of a performance goal versus mastery goal dichotomy. The present research offers an alternative framework by partitioning the performance goal orientation into independent approach and avoidance motivational orientations. Two experiments investigated the predictive utility of the proposed approach-avoidance achievement goal conceptualization in the intrinsic motivation domain. Results from both experiments supported the proposed framework; only performance goals grounded in the avoidance of failure undermined intrinsic motivation. Task involvement was validated as a mediator of the observed effects on intrinsic motivation. Ramifications for the achievement goal approach to achievement motivation and future research avenues are discussed. Achievement motivation theorists focus their research attention on a particular class of behaviors, those involving competence. Individuals may aspire to attain competence or may strive to avoid incompetence, and this approach-avoidance distinction was explicitly incorporated into the earliest achievement motivation conceptualizations. Two independent motivational orientations, the desire for success and the desire to avoid failure, were identified by Lewin and colleagues as critical determinants of aspiration behavior (Hoppe, cited in Lewin, Dembo, Festinger, & Sears, 1944). In his nascent achievement motivation theory, McClelland ( 1951 ) proposed that "there are at least two kinds of achievement motivation, one of which appears to be oriented around avoiding failure and the other around the more positive goal of attaining success" (p. 202).