A computably enumerable degree a is called nonbounding, if it bounds no minimal pair, and plus cupping, if every nonzero c.e. degree x below a is cuppable. Let NB and PC be the sets of all nonbounding and plus cupping c.e. degrees, respectively. Both NB and PC are well understood, but it has not been possible so far to distinguish between the two classes. In the present paper, we investigate the relationship between the classes NB and PC, and show that (...) there exists a minimal pair which join to a plus cupping degree, so that PC ⊈ NB. This gives a first known difference between NB and PC. (shrink)

di 1 juan. Zheng lun pian -- di 2 juan. Zhe xue pian -- di 3juan. Wen hua pian -- di 4 juan. Shu xin yu sui bi pian.

Purpose – This study aims to investigate the perceptions, acceptance, usage and access to social media by students and academics in higher education in informatics programs in Malaysia. A conceptual model based on Connectivism and communities of practice learning theory was developed and were used as a basis of mapping the research questions to the design frameworks and the research outcomes. A significant outcome of this study will be the development of a design framework for implementing social media as supporting (...) tools for student engagement and teaching and learning of informatics programs in higher education institutions in Malaysia. Design/methodology/approach – A mixed-method research methodology with a significant survey research component was employed for this research. This methodology focused on collecting and analyzing quantitative and qualitative data to better understand the research problems. For this study, a mixed-method sequential transformative research strategy based on a QUAN-Qual model was used in the data collection process. Mixed-method research methodology is considered to be most appropriate for this study, as it allows the researcher to gather multiple forms of data from diverse audiences such as educators, administrators and students. Findings – The findings show the close matched of the ownership, amount of hours spent online, types of social media technologies used and pattern of usage between informatics and non-informatics students. It also shows that many students and instructors have started to explore and accept the use of SMTs as a tool for engaging with their institution and their peers as well as for teaching and learning purposes. Innovative institutions need to understand the critical success factors and the barriers that restrict the implementation of SMTs within the HEI to take advantage of the opportunities offered by SMTs in higher education. Research limitations/implications – The surveys and interview participant, in part, are self-selecting, so the data collected cannot be claimed to be representative of the population. However, because of the relatively large number of participants, it can be considered that the findings are indicative. Other limitation includes the depth of data that can be collected using this methodology. Practical implications – There is wide range of social media usage in educational settings now being reported, but many issues are still unexamined. Limited studies have been focusing on the educators’ readiness, acceptance or refusal in integrating social media into their courses, the perceived effectiveness of the tools and student outcomes for their learning. The central outcome of this research will be the development of a design framework that will be used as a guide for Malaysian HEIs and informatics academics to engage students using SMTs in creating effective learning communities for informatics programs. Social implications – The framework will have implication for the social interaction and engagement of students with their institution. Originality/value – Very little work has been reported on student and academic engagement, their perspectives and perceived effectiveness of social media usage in higher education, especially in the Malaysia context. Most of the research focused only on the quantitative research with students from universities in the USA and Australia, with an emphasis mainly on student’s perception and acceptance. There are calls for more research to examine how social media is perceived and accepted by students and academics for teaching and learning, especially in Malaysia. (shrink)

本书包含了英美基本逻辑教程中应该包含的全部题材,用对话的形式对逻辑的应用、纯逻辑的训练等方面的问题进行了讲解。.

We present two of the three major steps in the construction of motivic integration, that is, a homomorphism between Grothendieck semigroups that are associated with a first-order theory of algebraically closed valued fields, in the fundamental work of Hrushovski and Kazhdan [8]. We limit our attention to a simple major subclass of V-minimal theories of the form ACV FS, that is, the theory of algebraically closed valued fields of pure characteristic 0 expanded by a -generated substructure S in the language (...) . The main advantage of this subclass is the presence of syntax. It enables us to simplify the arguments with many different technical details while following the major steps of the Hrushovski–Kazhdan theory. (shrink)

The spatial organization of the genome is intimately linked to its biological function, yet our understanding of higher order genomic structure is coarse, fragmented and incomplete. In the nucleus of eukaryotic cells, interphase chromosomes occupy distinct.

This study develops an internal–external institutional framework that explains why firms act in socially responsible ways in the emerging country context of China. Utilizing a mixed method of in-depth interviews and a survey study of 225 Chinese firms, the author found that internal institutional factors, including ethical corporate culture and top management commitment, and external institutional factors, including globalization pressure, political embeddedness, and normative social pressure, will affect the likelihood of firms to act in socially responsible ways. In particular, implicit (...) ethical corporate culture plays a key role in predicting different aspects of corporate social responsibility, while external institutional mechanisms mainly predict market-oriented CSR initiatives. This study contributes to the research on CSR antecedents by showing that in the emerging economy of China, CSR toward nonmarket stakeholders is more closely intertwined with corporate tradition and values, while legitimacy-seeking CSR activities are still limitedly rewarded. (shrink)

This study investigates the antecedents and mechanisms of consumers’ adoption of a public bicycle-sharing scheme as a form of shared sustainable consumption. Drawing on marketing ethics and sustainability literature, it argues that cultural and consumption values drive or deter the adoption of PBSS through the mediating mechanism of ethical evaluation. This study tests its hypotheses using a sample of 755 consumers from one of the largest PBSS programs in China. The results confirm the significance of collectivism, man–nature orientation, materialism, and (...) face-consciousness as key determinants of the adoption of PBSS. Interestingly, these values play mixed roles in influencing PBSS adoption. It also finds that such values and beliefs need to be effectively translated into ethical evaluations of PBSS adoption, and need to be addressed in the specific social context. Thus, ethical evaluation constitutes a cognitive strategy that allows consumers to justify and defend their adoption of sustainability practices. The results suggest that a desirable sustainability program needs to not only cater to the cultural and psychological motivations of consumers, but also reflect the social norms and social context in which the sustainability practices and consumers are embedded. (shrink)

This study identifies unique corporate social responsibility (CSR) dimensions and develops a framework to analyze different levels of institutional dynamics in understanding CSR in China. Based on multiple case studies of 16 firms, the article examines the CSR philosophy and approach in China's emerging market. The findings suggest that Chinese CSR understanding is largely grounded in the context of ethical and discretionary actions. This focus is mainly attributed to the dominant role of ethical leadership, governmental dependency, and cultural traditions in (...) Chinese CSR. Moreover, the weakness or the absence of conducive social normative environment and positive peer pressure, and misalignment between CSR and organizational design further contribute to a lack of systemic and institutionalized approach to CSR in China. Our study implies that CSR is still evolving at a preliminary stage in China, and institutional infrastructure and cultural ethics are exerting abiding influence on CSR approach in the emerging economies. The article also suggests the implications for practice and policy making. (shrink)

While business ethics has generated a great deal of research internationally over the last few decades, academic reviews of the business ethics literature remain limited. Moreover, there has been little attempt to date to analyze this literature specifically in the Greater China region, which has been experiencing rapid socioeconomic growth and dynamic evolution of business ethics in recent decades. This paper addresses this research gap by undertaking a comprehensive and critical appraisal of the business ethics literature on Greater China. In (...) particular, it maps out the existing research findings, identifies limitations in methodology, and suggests future directions for business ethics research in this region. The findings indicate that the scholarly interests cover 24 research themes, including corporate social responsibility and social performance; ethical beliefs, judgment, values, decision-making, and culture; workplace ethics and behavior; marketing ethics and consumer behavior; and sustainability. This review reveals a growing imbalance between empirical and conceptual/theoretical studies on business ethics. In addition, the published works covered in this review heavily rely on survey method and convenience sampling, with a predominant focus on a single individual level of analysis. Importantly, this study identifies four directions for future research: contextualized theoretical development, addressing multilevel research, developing research design tailored to the Chinese context, and ensuring more diversified and rigorous data collection. (shrink)

Integrating stakeholder agency theory with the instrumental corporate social responsibility (CSR) literature, this study explores how award-winning CEOs consider personal interests and balance competing stakeholder demands when they decide between external and internal CSR, or CSR focus. Using a difference-in-differences research design, we find that after winning a prestigious media award, CEOs engage in more external CSR, which is more visible to the public, and less internal CSR, which is less likely to attract public attention. We find that such an (...) influence on CSR focus is more salient for award-winning CEOs with lower stock ownership (i.e. a stronger self-serving motivation) than for CEOs with higher stock ownership. Furthermore, we explore the role of stakeholder salience in modifying award-winning CEOs’ decisions about CSR focus. When external stakeholder salience is higher (e.g. higher media coverage), award-winning CEOs' manipulation of CSR focus by increasing external CSR and decreasing internal CSR is more salient. However, such effects can be dampened when internal stakeholder salience is higher (e.g. higher human capital intensity). Our study contributes to the instrumental CSR literature by demonstrating the underlying processes and boundary conditions of how awards affect CEOs' balance of stakeholder salience. (shrink)

We introduce a two-valued and a three-valued truth-valuational substitutional semantics for the Quantified Argument Calculus (Quarc). We then prove that the 2-valid arguments are identical to the 3-valid ones with strict-to-tolerant validity. Next, we introduce a Lemmon-style Natural Deduction system and prove the completeness of Quarc on both two- and three-valued versions, adapting Lindenbaum’s Lemma to truth-valuational semantics. We proceed to investigate the relations of three-valued Quarc and the Predicate Calculus (PC). Adding a logical predicate T to Quarc, true of (...) all singular arguments, allows us to represent PC quantification in Quarc and translate PC into Quarc, preserving validity. Introducing a weak existential quantifier into PC allows us to translate Quarc into PC, also preserving validity. However, unlike the translated systems, neither extended system can have a sound and complete proof system with Cut, supporting the claim that these are basically different calculi. (shrink)

This paper proposes an extended version of the interventionist account for causal inference in the practical context of biological mechanism research. This paper studies the details of biological mechanism researchers’ practices of assessing the evidential legitimacy of experimental data, arguing why quantity and variety are two important criteria for this assessment. Because of the nature of biological mechanism research, the epistemic values of these two criteria result from the independence both between the causation of data generation and the causation in (...) question and between different interventions, not techniques. The former independence ensures that the interventions in the causation in question are not affected by the causation that is responsible for data generation. The latter independence ensures the reliability of the final mechanisms not only in the empirical but also the formal aspects. This paper first explores how the researchers use quantity to check the effectiveness of interventions, where they at the same time determine the validity of the difference-making revealed by the results of interventions. Then, this paper draws a distinction between experimental interventions and experimental techniques, so that the reliability of mechanisms, as supported by the variety of evidence, can be safely ensured in the probabilistic sense. The latter process is where the researchers establish evidence of the mechanisms connecting the events of interest. By using case studies, this paper proposes to use ‘intervention’ as the fruitful connecting point of literature between evidence and mechanisms. (shrink)

We find that agency problems are embedded in firm's excess and abnormal equity investments that are mainly dictated by controlling shareholder's motives and ethical choices manifested in ownership and board structure. The excess equity investment is gauged with respect to industry average. The abnormal equity investment is specifically referred to the number of nominal investment companies that are fully controlled by the controlling owners while subject to little governance. Our empirical evidences of 345 Taiwanese non-financial listed firms show that firm's (...) excess and abnormal equity investments are negatively correlated with controlling shareholder's cash flow rights while are positively correlated with the control-cash flow deviation, and board affiliation. The results are supportive of the positive incentive hypothesis and the negative entrenchment hypothesis put forth by La Porta et al. and Claessen et al.. The negative relation between equity investment and firm's value further supports the agency postulation that corporate excess and abnormal equity investments represent a leeway for controlling shareholder to exploit wealth of minority shareholders. This study potentially contributes to the literature of business ethics by portraying an empirically testable linkage from controlling owner's ethical choices to his actions and therefore firm's value. (shrink)

This study examines whether customer firms’ unethical behavior distorts suppliers’ investment decisions. Using litigation and restatement to measure unethical behavior, we find that suppliers with customers engaged in frauds tend to invest more during the cheating period, compared to unaffected suppliers. In cross-sectional analyses, we examine the moderating effect of suppliers’ reliance on customer information and peer information. Results show that more industry peers’ voluntary disclosures and analyst coverage, lower sales volatility, and lower relationship-specific investments mitigate the distortion effect on (...) suppliers. Suppliers’ overinvestments caused by customers’ misreporting also lead to the suppliers’ inferior future performance and subsequent negative market reaction, and the severity of customers’ misreporting influences the magnitude of suppliers’ investment distortions. These results are robust in a dynamic difference-in-difference specification, an SEC enforcement sample, and a sample that excludes observations for suppliers and customers in the same industry. This paper contributes to the ethics literature by emphasizing the importance of creditable supply-chain information transfer to investment decisions and clarifying the nontrivial influence of principal customers in the supply-chain network. (shrink)

Obstetric ultrasound is the well-recognized prenatal test used to visualize and determine the condition of a pregnant woman and her fetus. Apart from the clinical application, some businesses have started promoting the use of fetal ultrasound machines for nonmedical reasons. Non-medical fetal ultrasound (also known as ‘keepsake’ ultrasound) is defined as using ultrasound to view, take a picture, or determine the sex of a fetus without a medical indication. Notwithstanding the guidelines and warnings regarding ultrasound safety issued by governments and (...) professional bodies, the absence of scientifically proven physical harm to fetuses from this procedure seems to provide these businesses with grounds for rapid expansion. However, this argument is too simplistic because current epidemiological evidence is not synchronous with advancing ultrasound technology. As non-medical fetal ultrasound has aroused very significant public attention, a thorough ethical analysis of this topic is essential. Using a multifaceted approach, we analyse the ethical perspective of non-medical fetal ultrasound in terms of the expectant mother, the fetus and health professionals. After applying four major theories of ethics and principles (the precautionary principle; theories of consequentialism and impartiality; duty-based theory; and rights-based theories), we conclude that obstetric ultrasound practice is ethically justifiable only if the indication for its use is based on medical evidence. Non-medical fetal ultrasound can be considered ethically unjustifiable. Nevertheless, the ethical analysis of this issue is time dependent owing to rapid advancements in ultrasound technology and the safety issue. The role of health professionals in ensuring that obstetric ultrasound is an ethically justifiable practice is also discussed. (shrink)

By summarizing, in a single piece, various current perspectives on addiction, Redish et al. have performed a useful service to the field. Their central message is that addiction comprises many vulnerabilities rather than a single vulnerability. Such a message may not be new, but it is worth repeating.

Through statistical analysis of datasets describing single cell shape following systematic gene depletion, we have found that the morphological landscapes explored by cells are composed of a small number of attractor states. We propose that the topology of these landscapes is in large part determined by cell‐intrinsic factors, such as biophysical constraints on cytoskeletal organization, and reflects different stable signaling and/or transcriptional states. Cell‐extrinsic factors act to determine how cells explore these landscapes, and the topology of the landscapes themselves. Informational (...) stimuli primarily drive transitions between stable states by engaging signaling networks, while mechanical stimuli tune, or even radically alter, the topology of these landscapes. As environments fluctuate, the topology of morphological landscapes explored by cells dynamically adapts to these fluctuations. Finally we hypothesize how complex cellular and tissue morphologies can be generated from a limited number of simple cell shapes. (shrink)

An increasing body of institutional research has examined organizations’ response to conflicting institutional logics, but few studies have looked into how cross-sector organizational actors experiencing institutional complexity strategize their response mechanisms to create value in the context of corporate social responsibility (CSR). We conduct a comparative case study of nine social partnerships between multinational companies (MNCs) and nonprofits in China. We identify a partnership logic among the value-creating partnerships where partners guided by an either/and mindset take joint ownership of the (...) social or sustainability issue/cause and integrate it into their core set of activities and goals. By contrast, the less successful partnerships guided by an either/or mindset pursue a substitution logic in which the issue and project are kept separate and marginalized from core activities and goals. We contribute to an understanding of the value creation of cross-sector social partnerships by revealing the institutional embeddedness of such partnerships and deriving a process model of collaborative value creation through institutional works in social partnerships. (shrink)

This paper reviews the studies of Japanese society and culture undertaken by Hong Kong-based sociologists and scholars in related disciplines. It presents information on research projects funded by the Research Grants Council, Social Sciences Citation Index (SSCI), and Arts and Humanities Citation Index (A&HCI) journal articles, authored and edited books, book chapters, non-SSCI and non-A&HCI journal articles, as well as master and doctoral theses written by scholars and graduate students associated with Hong Kong's major universities. It is found that the (...) main topics of research are Japan's capitalist development and corporate growth, meanings and social ramifications of traditional and popular culture, education, gender, and marriage, as well as aspects of work and employment, whereas the major research methods include document analysis, ethnography, and in-depth interviews. The limited amount of research and the preoccupation with economic development and popular culture reflect in part Hong Kong's unique political conditions and the government's indifference to the pursuit of social and political policy analysis. In recent years, the growth of academic exchanges between scholars in Hong Kong, Japan, and other East Asian regions and the heightened emphasis by university administrators on academic research will hopefully bring about advancements in such academic endeavors. (shrink)

Nowadays, emotions are among the most significant issues in the route of learning a language that should be taken into consideration. Consistent with the fundamental function of positive psychology and also the theory of broaden-and-build, enjoyment in language learning especially the foreign language is among those positive emotions that encourage EFL learners to develop their perspective to achieve. Efforts to apprehend and develop the academic achievement of EFL learners have also progressively concentrated on self-regulation as it boosts learners’ enjoyment, hope, (...) pride, self-control, and learning. Besides, in line with the investigations of these positive emotions, principles of PP, the present review makes every effort for the interplay and its effects in language learning. It is pertinent to state that the present review of studies can benefit academic organizations, professional development centers, policymakers in the academic community to consider the role of emotions, namely positive ones and their positive impact on language learning. (shrink)

In recent years, alternative teacher preparation programmes are globally emerging to address teacher quality in ‘hard-to-staff’ schools. These programmes commonly attract graduates from prestigious...