This study assesses the impact had by institutional isomorphic pressures in the organisational fields of 185 businesses operating within the United Kingdom. The emphasis throughout is on how external institutions affect the socially and environmentally responsible aspects of an organization’s purchasing practice. Factor analyses and a linear regression model are employed to test the influence of these pressures. Initial findings suggest that what other industry participants are doing in this area is not as important in affecting the (...) procurement practice of the focal organisation as is the managers’ perception of how legitimacy is awarded by stakeholders and, indeed, if competitors with well-developed social and environmental supply chain management programs are perceived favourably in the industry. (shrink)

Business schools, and universities providing business education, from across the globe have increasingly engaged in responsible management education (RME), that is in embedding social, environmental and ethical topics in their teaching and research. However, we still do not fully understand the institutional pressures that have led to the adoption of RME, in particular concerning under-researched regions like Central and Eastern Europe (CEE). Hence, we undertook what is to our knowledge the most comprehensive study into the adoption of RME in (...) CEE to date (including 13 countries: Belarus, Bulgaria, Croatia, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania, Russia, Slovenia and Ukraine). We find that, with regard to RME, isomorphic pressures seem to shape teaching and research in different ways, which suggests that the idea of a holistic approach to RME, promoted by, for example, the Principles of Responsible Management Education (PRME), needs to be revisited; rather, different trajectories of organizational engagement may emerge for each principle. As a contribution to institutional theory, we discuss how a highly fragmented organizational field—like RME with its multiple dimensions—impacts on notions of actor centrality, where actors achieve centrality with regard to some dimensions of the field but fail to do so for others. In particular, we found that the European Union holds centrality in the area of RME teaching, but not in RME research. Our findings thus suggest that the concept of field centrality needs further clarification. (shrink)

This paper analyzes the determinants underlying the internalization of proactive environmental management proposed by certifiable environmental management systems such as those set out in ISO 14001 and the European Management and Auditing Scheme. Using a study based on 232 usable questionnaires from EMAS-registered organizations, we explored the influence of institutional pressures from different stakeholders and the role of corporate strategy in the “substantial” versus “symbolic” integration of environmental practices. The results highlighted that although institutional pressures generally strengthen the (...) internalization of proactive environmental practices, the influence of stakeholders can either support the integration of these practices or encourage their superficial adoption. For example, while pressure from suppliers and shareholders contribute to corporate greening, pressure from customers and industrial associations tend to encourage greenwashing. Product quality-oriented strategies also positively influence EMS internalization. The paper sheds light on the institutional complexity underlying the substantial versus symbolic implementation of environmental practices, and questions the dominant isomorphic view of EMS adoption. The paper also bridges the gap between complementary approaches on corporate greening, notably neo-institutional and stakeholder theories. (shrink)

Codes of conduct have become the perhaps most often used tool to manage corporate social responsibility (CSR). Researchers have primarily analysed such documents at company-wide or trans-company levels, whereas there is a dearth of studies into the use of codes for particular corporate functions. Hence, this article will examine one particular group of sub-company level codes, namely codes of conduct that stipulate CSR criteria for suppliers. Examining such ethical sourcing policies adopted by the FTSE100 corporations, the article draws out what (...) environmental, social and economic issues large corporations perceive to be important in the management of their supply chains. At an aggregate level, the coverage of CSR issues is rather extensive, yet at the level of the individual corporation a degree of selectivity in the issues that are addressed becomes noticeable. The code content analysis furthermore confirms the business case and public pressure to be the most important drivers of CSR. Finally, the study highlights the role of isomorphic processes in the adoption of CSR tools. (shrink)

The global spread of corporate social responsibility (CSR) practices is widely explained in institutional-isomorphic terms: Corporations worldwide adopt CSR in reaction to isomorphic pressures exerted on them by a pro-CSR global environment, including normative calls for CSR, activist targeting, civil regulation frameworks, and educational activities. By contrast, this article considers the proactive agency of corporations in CSR diffusion, which is informed by nonmarket strategies that seek to instrumentally reshape the political and social environment of corporations. Applying a (...) “channels-of-diffusion” perspective, we show that in the initial phase of CSR’s transnational diffusion—as exemplified by the cases of Venezuela (1962-1967) and Britain (1977-1981)—CSR traveled through learning exchanges between business elite “exporters” and “importers” whose engagement in diffusion addressed crisis-enhanced political threats and opportunities in the receiving country. The focal agents established national CSR business associations, which disseminated among local corporations CSR practices adapted to confront the challenges at hand. We identify the features of such “business-led cross-national diffusions of CSR”; formulate propositions regarding their conditions, dynamics, and effects; and suggest that further research of this mode of diffusion would advance a more nuanced and balanced understanding of CSR’s globalization. (shrink)

We create a database of company codes of ethics from firms listed on the Standard & Poor's 500 Index and, separately, a sample of small firms. The SEC believes that "ethics codes do, and should, vary from company to company." Using textual analysis techniques, we measure the extent of commonality across the documents. We find substantial levels of common sentences used by the firms, including a few cases where the codes of ethics are essentially identical. We consider these results in (...) the context of legal statements versus value statements. While legal writing often mandates duplication, we argue that value-based statements should be held to a higher standard of originality. Our evidence is consistent with isomorphic pressures on smaller firms to conform. (shrink)

Due to the prevalent influence of legal trends in driving ethical homogenization and persistent decoupling between ethical substance and symbolism in today’s organizations, scholars are calling for a renewed interest in the structural makeup of ethical codes. This article explores the disclosure trends and examines the contents of codes of ethics in the context of Canadian publicly listed acquirers. Relying on the analysis of codes’ public availability, structure, purpose, and promoted values, four clusters of behavior are identified. Although many firms (...) avoid the public disclosure of their codes, the results indicate that code of ethics’ patterns in sample firms are not driven merely by regulatory forces but increasingly shaped by aspirations for building a sustainable values-based corporation. The reported differences across clusters demonstrate that many companies in Canada overcome isomorphic pressures by displaying some originality in the writing of their codes. While symbolism in codes of ethics’ design and adoption prevails in publicly listed acquiring firms, the study provides evidence of an emerging trend of substantial commitment to social responsibilities. (shrink)

Positive public perceptions of academic quality and professional ethics are critical to the long-term legitimacy of American colleges and universities. Faculty codes of conduct are one mechanism whereby the professoriate can define acceptable practice, exercise social control, and maintain public confidence in higher education, yet the drivers of their adoption are not well understood. Building upon previous research into such organizational behavior by institutional type, this study examined the prevalence and content of publicly posted faculty codes of conduct within an (...) organizational field of institutions that share a common religious identity but differ in their institutional types and employment structures. Faculty handbooks from American member institutions of the Council for Christian Colleges & Universities, an international association of faith-based institutions, were gathered and analyzed. Although only 27% of CCCU member institutions in the U.S. publicly posted faculty codes of conduct, the average number of tenets present in each code was higher than suggested by previous research. Study findings also revealed that membership category, institutional type, and employment structures influence the content of faculty codes of conduct, indicating that isomorphic pressures operate within this particular organizational field. The piece concludes by commending publicly posted codes of conduct as an affirmation of the personal responsibility, fairness, and care exercised by ethical professionals in the academy. (shrink)

Using the symbiotic sustainability model as a framework, this research investigates how many and with which businesses top nonprofit organizations report partnerships. We examined the websites of the 122 largest, most recognizable U.S. nonprofits. These websites included information about 2,418 business–nonprofit partnerships with 1,707 unique businesses. The results suggest key differences with previous research on how U.S. Fortune 500 companies report B2N partnerships. Leading nonprofits report more B2N partnerships than U.S. Fortune 500 companies do. Furthermore, nonprofits do not maintain industry (...) exclusivity in reporting B2N partnerships, like their business counterparts do. Finally, social issue industries do not exert the same isomorphic pressures on B2N partnerships that economic industries do. New propositions that extend the symbiotic sustainability model are presented to account for nonprofits’ unique goals for capital accumulation in B2N partnering and the industry characteristics. (shrink)

Prior researches have highlighted challenges and variations arising from the requirements of research ethics committees and ethics governance systems across diverse research fields. This emphasizes the need to investigate how universities convey and implement research ethical practices. Research ethics plays a pivotal role in guiding the integration of ethical principles throughout all stages of research starting from its inception and planning to its completion and the dissemination of results. These practices encompass a range of considerations, reviews, guidelines, and processes aimed (...) at safeguarding the rights, dignity, health, safety, and privacy of research participants. Using the content analysis technique, this paper aims to analyse research ethical practices information on universities’ websites from three developed countries and developing countries respectively using the isomorphism conception. The findings suggest that the coercive, normative, and mimetic isomorphic pressures explain the research ethics governance practices. The ethical practices information was disclosed more on university websites of the developed countries. Suggestions to improve the university’s research ethics governance system for the post-COVID-19 era were provided in the paper. (shrink)

This paper capitalizes on an institutional perspective to analyze corporate social responsibility (CSR) orientations in the Lebanese context. Specifically, the paper compiles a new theoretical framework drawing on a multi-level model of institutional flows by Scott (Institutions and organizations: ideas and interests, 2008 ) and the explicit/implicit CSR model by Matten and Moon (Acad Manag Rev 33(2):404–424, 2008 ). This new theoretical framework is then used to explore the CSR convergence versus divergence question in a developing country context. The findings (...) highlight the usefulness of the compiled multi-layered institutional framework and the varied nuances and profound insights it offers in analyzing CSR in context. They also suggest that a cosmetic level of global convergence in explicit CSR may materialize in light of mimetic isomorphic pressures, but that the path dependence hypothesis is indeed salient in light of national history trajectories and socio-politico configurations. The findings correspond most closely to patterns of CSR crossvergence, combining elements of both convergence and divergence, and reflecting in complex hybridized CSR expressions. The findings and their implications are presented and assessed. (shrink)

The era of sustainable transformation has witnessed an increase in corporate environmental, social, and governance (ESG) disclosure waves. Using Chinese A-share listed companies from 2016 to 2021 as a sample, this study adopted textual analysis and machine-learning techniques to analyze ESG reports and explore the imitation behavior of ESG disclosures in emerging Chinese markets for the first time. The results show imitation behavior exists in corporate ESG disclosures from the perspective of group association. Regarding the imitation object, enterprises tend to (...) choose the peer average level as a reference rather than the best enterprise in the same industry, which reveals the inherent law that enterprises' ESG disclosures are satisfied with compliance rather than championship. In terms of effects, the ESG-mimetic isomorphic pressure has no incremental information effect but has an efficiency optimization effect. Furthermore, the imitation intensity and impact effects of ESG disclosure behavior exhibit heterogeneity owing to differences in properties, sales growth rates, and external attention. This study expands the motivation for corporate ESG disclosure behavior and enriches the empirical evidence for institutional isomorphism. (shrink)

This study sets out to evaluate the role and emerging salience of environmental managers in a longitudinal perspective through a series of interviews with UK based environmental managers. Our results suggest that coercive isomorphic pressures are particularly important in driving the increased salience of the environmental management role and that stakeholder pressures overall have increased since 2006 which has further contributed to the environmental management function emerging as central to the business organisation. Views on the impact of (...) the financial crisis were divided. (shrink)

This article presents a three-stage model of how isomorphic mechanisms have shaped corporate social responsibility reporting practices over time. In the first stage, defensive reporting, companies fail to meet stakeholder expectations due to a deficiency in firm performance. In this stage, the decision to report is driven by coercive isomorphism as firms sense pressure to close the expectational gap. In the second stage, proactive reporting, knowledge of CSR reporting spreads and the practice of CSR reporting becomes normatively sanctioned. In (...) this stage, normative isomorphism leads other organizations to look to CSR reporting as a potential new opportunity for achieving the firm’s goals. In the third stage, imitative diffusion, the defensive reporters together with the proactive reporters create a critical mass of CSR reporters that reaches a threshold at which the benefits of CSR reporting begin to outweigh any costs due to mimetic isomorphism. The study finds support for the model in an examination of Fortune 500 firms from 1997 to 2006. (shrink)

The study contributes to building an understanding of the impact of political forces on the information environment of listed firms in a developing economy. Specifically, it investigates the tensions between politico-institutional factors and accounting regulation on the prolonged and incomplete implementation of the International Financial Reporting Standards in Bangladesh from 1998 to 2010. Two phases of interviews were conducted in 2010–2011 and IFRS-related enforcement documents from 1998 to 2010 were evaluated. The study contributes that IFRSs are being diffused to developing (...) countries like Bangladesh, but they invariably interact with local institutions, with variable outcomes. Coercive, normative and mimetic isomorphisms are low in Bangladesh. Notably, political forces have been undermining mimetic isomorphism because of the high level of government intervention and the high level of political lobbying. Political institutional pressures stand in the way of mimetic isomorphism and constitute negative forces that add further tension to accounting regulation in Bangladesh. Regarding the low level of normative isomorphism, there is evidence of a ‘blame culture’, with state institutions and professional accountancy institutions in the country blaming each other for the poor progress in IFRS implementation. Although the study focuses on Bangladesh, its results have implications for international policy makers, as well as the governments and regulators of other developing economies facing similar challenges in implementing IFRS. (shrink)

We conceptualise CSR communication as a process of reciprocal influence between organisations and their audiences. We use an illustrative case study in the form of a conflict between firms and a powerful stakeholder which is played out in a series of 20 press releases over a 2-month period to develop a framework of analysis based on insights from linguistics. It focuses on three aspects of dialogism, namely (i) turn-taking (co-operating in a conversation by responding to the other party), (ii) inter-party (...) moves (the nature and type of interaction characterising a turn, i.e. denial, apology or excuse) and (iii) intertextuality (the intensity and quality of verbal interaction between the parties). We address the question: What is the nature and type of verbal interactions between the parties? First we examine (a) whether the parties verbally interact and then (b) whether the parties listen to each other. We find evidence of dialogism suggesting that CSR communication is an interactive process which has to be understood as a function of the power relations between a firm and a specific stakeholder. Also, we find evidence of intertextuality in press releases by six firms which engage in verbal interaction with the stakeholder. We interpret this as linguistic evidence of isomorphic processes relating to CSR practices resulting from the pressure exerted by a powerful stakeholder. The lack of response by ten firms that fail to issue press releases suggests a strategy of ‘watch-and-wait’ with respect to the outcome of the conflict. (shrink)

The purpose of this research is to provide an overview of state governance for corporate social responsibility (CSR) in the countries of the Gulf Cooperation Council (GCC). A systemic literature review method is employed to collect 88 relevant publications, and a qualitative coding method is used to identify 98 governance instruments from those publications. These are grouped into 13 themes and then examined within three conceptual models. The findings reveal that most of the instruments are geared towards ethical expectations, internal (...) and external social responsibility, raising awareness, and socio‐economic development. The findings are then explored within four theories. The results suggest that CSR governance in the GCC is at a moderate to high level of bureaucratization; reflects Islamic identity, national development targets, and business accountability; is between the stages of habitualization and objectification; and relies mostly on normative pressures. Recommendations for policymakers and company managers are then presented based on these findings. (shrink)

In this paper it will be shown that HEO and $HRO^E$ are isomorphic with respect to extensional equality. This answers a question of Troelstra [T, 2.4.12, p. 128]. The main problem is to extend effective operations to a larger domain. This will be achieved by a modification of the proof of the continuity of effective operations. Following a suggestion of A.S. Troelstra, similar results were obtained for ECF(U) and $ICF^E(U)$, where $U$ is any universe of functions closed under "recursive (...) in". (shrink)

Palmer describes a “subjective barrier” that limits knowledge of others' experience. We discuss how this barrier extends to all knowledge, becoming less distinct as theoretical constructs are strengthened. We provide evidence for isomorphic experience, among individuals with similar physiologies, by showing that perceived relations between colors are as similar when viewing pigments as when viewing subjective colors caused by flickering bars.

Isomorphism between formulae is defined with respect to categories formalizing equality of deductions in classical propositional logic and in the multiplicative fragment of classical linear propositional logic caught by proof nets. This equality is motivated by generality of deductions. Characterizations are given for pairs of isomorphic formulae, which lead to decision procedures for this isomorphism.

We show that, under PFA, a coherent Suslin tree forces that every two Aronszajn trees are club-isomorphic.

Pressured Into Crime: An Overview of General Strain Theory by Robert Agnew provides an overview of general strain theory, one of the leading explanations of crime and delinquency, developed by author Robert Agnew. Written to be student-friendly, Pressured Into Crime features numerous real-world examples, insightful and colorful quotes from former and active criminals, clear summaries of major points, and challenging review and discussion questions at the end of each chapter.This book provides the following:* It compares and contrasts GST to other (...) leading theories of crime, including biopsychological, control, social learning, routine activities, and social disorganization theories.* It describes the evidence on GST, including the most current research on the types of strains most likely to cause crime, why these strains cause crime, and the factors that influence the effects of strains on crime.* It employs GST to explain patterns of offending over the life course as well as age, gender, class, and race/ethnic differences in offending.* It uses GST to explain community and societal differences in crime rates.* It draws on GST to make recommendations for reducing crime.* It revises and extends GST to take into account the latest research findings.Pressured Into Crime allows students to explore this major theory in depth--reviewing the research on the theory, comparing it to other theories, and applying the theory to key issues in the study of crime. (shrink)

The spectrum of a relation on a computable structure is the set of Turing degrees of the image of R under all isomorphisms between and any other computable structure . The relation is intrinsically computably enumerable if its image under all such isomorphisms is c.e. We prove that any computable partially ordered set is isomorphic to the spectrum of an intrinsically c.e. relation on a computable structure. Moreover, the isomorphism can be constructed in such a way that the image (...) of the minimum element of the partially ordered set is computable. This solves the spectrum problem. The theorem and modifications of its proof produce computably categorical structures whose expansions by finite number of constants are not computably categorical and, indeed, ones whose expansions can have any finite number of computable isomorphism types. They also provide examples of computably categorical structures that remain computably categorical under expansions by constants but have no Scott family. (shrink)

There is a widespread view that well-learned skills are automated, and that attention to the performance of these skills is damaging because it disrupts the automatic processes involved in their execution. This idea serves as the basis for an account of choking in high pressure situations. On this view, choking is the result of self-focused attention induced by anxiety. Recent research in sports psychology has produced a significant body of experimental evidence widely interpreted as supporting this account of choking in (...) certain kinds of complex sensorimotor skills. We argue against this interpretation, pointing to problems with both the empirical evidence and the underlying theory. The experimental research fails to provide direct support for the central claims of the self-focus approach, contains inconsistencies, and suffers from problems of ecological validity. In addition, qualitative studies of choking have yielded contrary results. We further argue that in their current forms the self-focus and rival distraction approaches both lack the theoretical resources to provide a good theory of choking, and we argue for an expanded approach. Some of the elements that should be in an expanded approach include accounts of the features of pressure situations that influence the psychological response, the processes of situation appraisal, and the ways that attentional control can be overwhelmed, leading to distraction in some cases, and in others, perhaps, to damaging attention to skill execution. We also suggest that choking may sometimes involve performance-impairing mechanisms other than distraction or self-focus. (shrink)

In this article we consider linear isomorphisms over the field of rational numbers between the linear spaces ℝ2 and ℝ. We prove that if f is such an isomorphism, then the image by f of the unit disk is a strictly nonmeasurable subset of the real line, which has different properties than classical non-measurable subsets of reals. We shall also consider the question whether all images of bounded measurable subsets of the plane via a such mapping are non-measurable.

Previous research into the formalisation of statute law identified a number of uses of language which posed problems for formalisation. A previous paper argued that these uses establish the requirement that a formalisation be isomorphic, but noted that this has odd consequences. This paper expands on what these consequences are and argues that they undermine the very idea of formalisation. Therefore, the whole argument constitutes a reductio ad absurdum of the idea of formalising statute law. The paper provides reasons (...) why this activity is impossible and places the conclusion in the context of the development of modem logic, in which context it appears uncontroversial. (shrink)

We study the partial orderings of the form ⟨P,⊂⟩\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\langle \mathbb{P}, \subset\rangle}$$\end{document}, where X\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{X}}$$\end{document} is a binary relational structure with the connectivity components isomorphic to a strongly connected structure Y\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{Y}}$$\end{document} and P\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{P} }$$\end{document} is the set of substructures of X\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} (...) \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb {X}}$$\end{document} isomorphic to X\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{X}}$$\end{document}. We show that, for example, for a countable X\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{X}}$$\end{document}, the poset ⟨P,⊂⟩\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\langle \mathbb {P}, \subset\rangle}$$\end{document} is either isomorphic to a finite power of P\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{P} }$$\end{document} or forcing equivalent to a separative atomless σ-closed poset and, consistently, to P/fin. In particular, this holds for each ultrahomogeneous structure X\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{X}}$$\end{document} such that X\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{X}}$$\end{document} or Xc\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{X}^{c}}$$\end{document} is a disconnected structure and in this case Y\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{Y}}$$\end{document} can be replaced by an ultrahomogeneous connected digraph. (shrink)

This paper belongs to cylindric-algebraic model theory understood in the sense of algebraic logic. We show the existence of isomorphic but not lower base-isomorphic cylindric set algebras. These algebras are regular and locally finite. This solves a problem raised in [N 83] which was implicitly present also in [HMTAN 81]. This result implies that a theorem of Vaught for prime models of countable languages does not continue to hold for languages of any greater power.

In this paper we investigate computable isomorphisms of Boolean algebras with operators (BAOs). We prove that there are examples of polymodal Boolean algebras with finitely many computable isomorphism types. We provide an example of a polymodal BAO such that it has exactly one computable isomorphism type but whose expansions by a constant have more than one computable isomorphism type. We also prove a general result showing that BAOs are complete with respect to the degree spectra of structures, computable dimensions, expansions (...) by constants, and the degree spectra of relations. (shrink)

Prior studies have provided explanations for the presence, use and dissemination of codes of corporate ethics or codes of corporate conduct of business corporations. Most such explanations are functional in nature, and are descriptive as they are derived from the codes and their associated documents. We search for more underlying explanations using two complementary theories: first, social contract theories explaining the exogenous and endogenous reasons of organizational behavior, and then institutional theory explaining why organizations take similar measures in response to (...) institutional pressures. Based on our explanations, we contend that the codes and their use and dissemination are arising from underlying social and institutional pressures for firms to continuously validate their existence in the face of increasing changes and recurrent uncertainties. (shrink)

We investigate the second order bounded arithmetical systems which is isomorphic to TAC i , TNC i or TLS.

In this paper the existence or nonexistence of isomorphic mappings between graph models for the untyped lambda calculus is studied. It is shown that Engeler's D A is completely determined, up to isomorphism, by the cardinality of its `atom-set' A. A similar characterization is given for a collection of graph models of the Pω-type; from this some propositions regarding automorphisms are obtained. Also we give an indication of the complexity of the first-order theory of graph models by showing that (...) the second-order theory of first-order definable elements of a graph model is first-order expressable in the model. (shrink)

There is a widespread view that well-learned skills are automated, and that attention to the performance of these skills is damaging because it disrupts the automatic processes involved in their execution. This idea serves as the basis for an account of choking in high pressure situations. On this view, choking is the result of self-focused attention induced by anxiety. Recent research in sports psychology has produced a significant body of experimental evidence widely interpreted as supporting this account of choking in (...) certain kinds of complex sensorimotor skills. We argue against this interpretation, pointing to problems with both the empirical evidence and the underlying theory. The experimental research fails to provide direct support for the central claims of the self-focus approach, contains inconsistencies, and suffers from problems of ecological validity. In addition, qualitative studies of choking have yielded contrary results. We further argue that in their current forms the self-focus and rival distraction approaches both lack the theoretical resources to provide a good theory of choking, and we argue for an expanded approach. Some of the elements that should be in an expanded approach include accounts of the features of pressure situations that influence the psychological response, the processes of situation appraisal, and the ways that attentional control can be overwhelmed, leading to distraction in some cases, and in others, perhaps, to damaging attention to skill execution. We also suggest that choking may sometimes involve performance-impairing mechanisms other than distraction or self-focus. (shrink)

In this paper it will be shown that HEO and HRO E are isomorphic with respect to extensional equality. This answers a question of Troelstra [T, 2.4.12, p. 128]. The main problem is to extend effective operations to a larger domain. This will be achieved by a modification of the proof of the continuity of effective operations. Following a suggestion of A.S. Troelstra, similar results were obtained for ECF(U) and ICF E (U), where U is any universe of functions (...) closed under "recursive in". (shrink)

This paper provides a Bishop-style constructive analysis of the contrapositive of the statement that a continuous homomorphism of R onto a compact abelian group is periodic. It is shown that, subject to a weak locatedness hypothesis, if G is a complete (metric) abelian group that is the range of a continuous isomorphism from R, then G is noncompact. A special case occurs when G satisfies a certain local path-connectedness condition at 0. A number of results about one-one and injective mappings (...) are proved en route to the main theorem. A Brouwerian example shows that some of our results are the best possible in a constructive framework. (shrink)

It is proved that all the isomorphisms in the cartesian category freely generated by a set of objects (i.e., a graph without arrows) can be written in terms of arrows from the symmetric monoidal category freely generated by the same set of objects. This proof yields an algorithm for deciding whether an arrow in this free cartesian category is an isomorphism.

It is proved that all the isomorphisms in the cartesian category freely generated by a set of objects can be written in terms of arrows from the symmetric monoidal category freely generated by the same set of objects. This proof yields an algorithm for deciding whether an arrow in this free cartesian category is an isomorphism.

In this paper we prove that, in the Cohen extension of a model M of ZFC+CH containing a simplified -morass, η1-orderings without endpoints having cardinality of the continuum, and satisfying specified technical conditions, are order-isomorphic. Furthermore, any order-isomorphism in M between countable subsets of the η1-orderings can be extended to an order-isomorphism between the η1-orderings in the Cohen extension of M. We use the simplified -morass, and commutativity conditions with morass maps on terms in the forcing language, to extend (...) countable partial functions on terms in the forcing language that are forced in all generic extensions to be order-preserving injections. This technique provides for the construction of functions in Cohen extensions adding 2 generic reals for which the only known arguments require transfinite constructions of order type no greater than ω1 in models of ZFC+CH. The specific example presented in this paper is an extension of Tarski’s classic result that in models of ZFC+CH, η1-orderings are order-isomorphic. (shrink)

Although manipulation is neither rational persuasion nor coercion, a more precise definition remains elusive. Two main accounts have been offered. One characterizes manipulation as a form of trickery. The other characterizes manipulation as a form of non-coercive pressure. Each account properly identifies only a subset of intuitively clear cases of manipulation. That is, some instances of manipulation apparently involve pressure, while others apparently involve trickery. Yet trickery and pressure seem distinct, so it is puzzling how they could be instances of (...) the same phenomenon. This puzzle can be solved once we recognize that manipulative pressure only works if the target acts akratically. This fact provides the basis for a unified account of manipulation as the attempt to get someone to make a mistake. (shrink)

We show that if A and $\widehat{A}$ are automorphic via Φ then the structures $S_{R}(A)$ and $S_{R}(\widehat{A})$ are $\Delta_{3}^{0}-isomorphic$ via an isomorphism Ψ induced by Φ. Then we use this result to classify completely the orbits of hhsimple sets.

The causes of prehistoric inter-group violence have been a subject of long-standing debate in archaeology, an- thropology, and other disciplines. Although population pressure has been considered as a major factor, due to the lack of available prehistoric data, few studies have directly examined its effect so far. In the present study, we used data on skeletal remains from the middle Yayoi period of the Japanese archipelago, where archaeologists argued that an increase of inter-group violence in this period could be explained (...) by a population-pressure hy- pothesis. We quantitatively examine the effect of population pressure on the frequency of inter-group violence by compiling an exhaustive data set. We collected demographic information based on burial jars (kamekan) and the frequency of violence based on the ratio of injured individuals. The results are consistent with the hypothesis, i. e., high population density can promote inter-group violence. (shrink)