This paper focuses on the problem of load frequency control and sensor fault-tolerant control in the multiarea power grid. To solve these problems, a sliding mode control strategy based on an interval observer is designed. First, an interval observer is designed to obtain the boundary estimation information of the system state online, which is used to reconstruct the load disturbance online. Based on the reconstructed values, an integral sliding mode controller is designed to keep the system frequency stable when the (...) load is disturbed. Then, sensor fault is diagnosed by interval residual. An augmented observer is designed to estimate sensor fault online by equivalent transformation, and the sensor fault is compensated by the fault estimation to reduce the influence of fault on system performance and ensure the reliable and stable operation of the power system. The simulation results show the superiority of the proposed control strategy. (shrink)

Strengthening a theorem of D.W. Kueker, this paper completely characterizes which countable structures do not admit uncountable L ω 1 ω -elementarily equivalent models. In particular, it is shown that if the automorphism group of a countable structure M is abelian, or even just solvable, then there is no uncountable model of the Scott sentence of M. These results arise as part of a study of Polish groups with compatible left-invariant complete metrics.

Pylyshyn's effort in establishing the cognitive impenetrability of early vision is welcome. However, his view about the role of attention in early vision seems to be oversimplified. The allocation of focal attention manifests its effect among multiple stages in the early vision system, it is not just confined to the input and the output levels.

Enterprise philanthropy is practiced in a very unique and rudimentary form in China. Based on a unique random survey data on 3837 Chinese private enterprises conducted in 31 provinces of China in 2006, I find the significant positive relationship between enterprise philanthropy donation and enterprise profitability, and the result supports the political and institutional power view of enterprise philanthropy in the latest development of China. Simply put, Chinese private enterprises carried out philanthropy activities to better protect property rights and nurture (...) political connections, which in turn, leads to better enterprise profitability. The␣result is even stronger in institutions weaker provinces. (shrink)

An inclusive vision of mathematics-- its beauty, its humanity, and its power to build virtues that help us all flourish. For mathematician Francis Su, a society without mathematical affection is like a city without museums. To miss out on mathematics is to live without experiencing some of humanity's most beautiful ideas. In this profound book, written for a diverse audience but especially for those disenchanted by their past experiences, an award-winning mathematician and educator weaves personal reflections, puzzles, and stories to (...) show how mathematics meets basic human desires and cultivates virtues essential for human flourishing. Readers will explore mathematical concepts-- and see how mathematical thinking can even fulfill such longings as for love, play, freedom, justice, and community. Some lessons come from those who have struggled, including philosopher Simone Weil, whose own mathematical contributions were overshadowed by her brother's, and Christopher Jackson, who discovered mathematics as an inmate in a federal prison. Christopher Jackson's letters to the author appear throughout the book and show how this intellectual pursuit can-- and must-- be open to all. (shrink)

What signals do firms in emerging economies send to stakeholders when they adopt corporate social responsibility practices? We argue that in emerging economies, firms that adopt CSR practices positively signal investors that their firms have superior capabilities for filling institutional voids. From an institution-based view, we hypothesize that the institutional environment moderates the signaling effect of CSR on a firm’s financial performance. Based on a sample of firms from ten Asian emerging economies, we find a positive relationship between CSR practices (...) and financial performance. This positive relationship is stronger in the less developed capital market than in the more developed one. The financial benefits of CSR practices are also more salient in the low information diffusion market than in the high one. We emphasize that signaling theory and the institution-based view can jointly contribute to the CSR literature. (shrink)

Driven by the cognitive-neoassociationistic model of aggression, this study examines how supervisors’ negative affect at work influences their interaction with subordinates, which further affects subordinate outcomes. Drawing upon research on power/resource interdependence and victim precipitation theory, we also test whether the positive relationship between supervisors’ negative affect and abusive supervision is moderated by leader–member exchange. Using one hundred and eighty supervisor–subordinate dyads from five hotels, we found that, supervisors’ negative affect at work was positively related to abusive supervision, LMX buffered (...) the positive association between supervisors’ negative affect and abusive supervision, and the indirect effects of supervisors’ negative affect on subordinate outcomes via abusive supervision was buffered by LMX, such that the indirect effects were only found in dyads with lower LMX, but not in dyads with higher LMX. Theoretical contributions and practical implications for managers and organizations were also discussed. (shrink)

This paper considers the debate between economists and philosophers about the role of values in economic analysis by examining the recent debate between Hilary Putnam and Sir Partha Dasgupta. It argues that although there has been a failure to communicate there is much more agreement than it seems. If Dasgupta's work is seen as part of the methodological tradition expounded by John Stuart Mill and John Neville Keynes, economists and philosophers will have a better basis for understanding each other. Unlike (...) the logical-positivist tradition, which treats facts and values as two mutually exclusive concepts, the Mill- Keynes tradition recognizes that facts and values are intertwined. Unlike the Smithian tradition, which blends the study of facts and normative rules, it divides economics into a science that studies "what is" and an art which considers "what ought to be done". (shrink)

Although Korean society has begun to seek a way of utilizing advance directives, there is not much known about the factors influencing the average Korean person’s preference toward advance directives. The purpose of this study was to examine factors, in addition to demographic variables, influencing preferences regarding advance directives. These include: to what extent people’s awareness of advance directives, preferences of extending their life at the end of life, experience of illness and medical care, and family functioning independently influence the (...) preferences toward advance directives. The participants were 382 community-dwelling Korean people. The data analysis was performed using hierarchical multiple logistic regression analysis. The findings showed that a majority of Korean people had a positive preference on advance directives and the factors influencing their preferences for advance directives were the preferences against the use of life-sustaining treatment at the end of life, a good self-rated heath status, and an unsatisfactory family functioning. (shrink)

1. Pulgyo rŭl chŏmke hanŭn kil -- 2. Kisang ŭi chilmun kwa ch'ŏnoe ŭi tappyŏn.

In order to reduce the influence of athlete’s body shape on the difficulty coefficient of diving, a more reasonable calculation method of body shape correction coefficient is proposed based on the original calculation rules of diving difficulty coefficient. First, the composition of the original diving difficulty coefficient and influencing factors is analyzed and the relationship between the various structural parts is fully clarified. Second, a coupled nonrigid body dynamics model is established and a 2-body model is used to simulate complex (...) diving actions, and it is concluded that diving time is positively correlated with body shape. Finally, the air movement part and the water entry part of diving are discussed separately, the calculation model of the difficulty coefficient of body shape correction is established, and the original difficulty coefficient is corrected. The results show that the difficulty coefficient of each movement is obviously increased. This effectively avoids the influence of body shape on the diving difficulty coefficient. (shrink)

Guanxi (literally interpersonal connections) is in essence a network of resource coalition-based stakeholders sharing resources for survival, and it plays a key role in achieving business success in China. However, the salience of guanxi stakeholders varies: not all guanxi relationships are necessary, and among the necessary guanxi participants, not all are equally important. A hierarchical stakeholder model of guanxi is developed drawing upon Mitchell et al.’s (1997) stakeholder salience theory and Anderson’s (1982) constituency theory. As an application of instrumental stakeholder (...) theory, the model dimensionalizes the notion of stakeholder salience, and distinguishes between and among internal and external guanxi, core, major, and peripheral guanxi, and primary and secondary guanxi stakeholders. Guanxi management principles are developed based on a hierarchy of guanxi priorities and management specializations. The goal of this application of instrumental stakeholder theory is to construct, for Western business firms in China, a means to reliably identify guanxi partners by employing the principles of effective guanxi. These principles are described in the form of testable propositions that advance social scientific research in this area of international business ethics. (shrink)

Background: Compassion has long been advocated as a fundamental element in nursing practice and education. However, defining and translating compassion into caring practice by nursing students who are new to the clinical practice environment as part of their educational journey remain unclear. Objectives: The aim of this study was to explore how Chinese baccalaureate nursing students define and characterize compassionate care as they participate in their clinical practice. Methods: A descriptive qualitative study design was used involving a semi-structured in-depth interview (...) method and qualitative content analysis. Twenty senior year baccalaureate nursing students were interviewed during their clinical practicum experience at four teaching hospitals. Ethical considerations: Permission to conduct the study was received from the Institutional Review Boards and the participating hospitals. Results: Baccalaureate nursing students defined and characterized compassionate care as a union of “empathy” related to a nurse’s desire to “alleviate patients’ suffering,” “address individualized care needs,” “use therapeutic communication,” and “promote mutual benefits with patients.” Students recognized that the “practice environment” was characterized by nurse leaders’ interpersonal relations, role modeling by nurses and workloads which influenced the practice of compassionate care by nursing personnel. Conclusion: Compassionate care is crucial for patients, nurses, and students in their professional development as well as the development of the nursing profession. In order to provide compassionate care, a positive practice environment promoted by hospital administrators is needed. This also includes having an adequate workforce of nurses who can role model compassionate care to students in their preceptor role while meeting the needs of their patients. (shrink)

In recent years, learning materials have gradually been applied to flipped classrooms. Teachers share learning materials, and students can preview the learning materials before class. During class, the teacher can discuss students' questions from their notes from previewing the learning materials. The social media platform Facebook provides access to learning materials and diversified interactions, such as sharing knowledge, annotating learning materials, and establishing common objectives. Previous studies have explored the effect of flipped classrooms on students' learning engagement, attitudes, and performance. (...) In this paper, we apply educational data mining to explore the relationship between students' viewing behaviors in accessing learning materials and their performance in flipped classrooms. The participants are classified into an experimental group and a control group to engage in flipped classroom activities. The experimental group uses the social media platform Facebook for flipped learning, and the control group uses a learning management system for flipped learning. The results show that there is a significant difference in the learning performance between the two groups, with the average score of the experimental group being higher than that of the control group. Furthermore, we find that the viewing behaviors and performance of the students within the experimental group differ significantly. (shrink)

Articles on Jain religion and philosophy.

Work examines the interpretation of Dvaita Vedanta and explains the stand-point of Advaita Vedanta.

In an effort at ethical reform, Taiwan recently revised the Hospice Palliative Care Law authorising family members or physicians to make surrogate decisions to discontinue life-sustaining treatment if an incompetent terminally ill patient did not express their wishes while still competent. In particular, Article 7 of the new law authorises the palliative care team, namely the physicians, to act as sole decision-makers on behalf of the incompetent terminally ill patient's best interests if no family member is available. However, the law (...) fails to provide guidance as to what constitutes the patient's best interests or what specific procedures the treating physicians should follow, and so has raised constitutional concerns. It may be difficult to translate ethical reform into law but it is not impossible if essential requirements are carefully followed. First, there must be substantial nexus between the purpose of the statute and the measures provided under the statute. Second, advocates need to convince the public that futility or waste has amounted to a public health emergency so as to justify lower procedural requirements. Third, a remedy or compensation should be available if the surrogate decisions have not been appropriately made. Fourth, minimum procedural safeguards are necessary even though the statute is intended to reduce the procedural burdens of making surrogate decisions on behalf of incompetent patients who lack family members and did not express their wishes while still competent. (shrink)

Gender segregation in baccalaureate degree fields declined rapidly in the first half of the period from 1971 to 2002; at the same time, women's representation among baccalaureate degree recipients increased most rapidly relative to men's. The desegregation of the early period resulted mainly from women's increased entry into business-related fields and declining proportions of women majoring in traditional fields such as education and English. Men did not contribute to integration by moving toward fields numerically dominated by women. Fixed-effects regression models (...) suggest that feminization of fields discourages later cohorts of men from entering them, as predicted by the devaluation perspective. The stalling of desegregation came from a combination of men's disinclination to enter fields that are “too” filled with women, and the slowdown in women making less traditional choices. (shrink)