Dogmatic trends in marxist sociology

The research program of theoretical pluralism would imply for sociology, to confront marxist with nonmarxist sociology. This seems useful only if both sociologies are refutable in principle. However, certain principles of marxist sociology prevent the refutation of its most fundamental hypotheses. This is shown in analyzing an often cited book by E. Hahn. The “basis” of marxist sociology is historical materialism. Thus, if hypotheses from marxist sociology are falsified, historical materialism is falsified too. Hahn maintains-without presenting any empirical evidence-that historical materialism has found the solution of all problems and thus cannot be refuted. Marxist sociology, however, is-according to Hahn-falsifiable. This statement and the thesis mentioned before are inconsistent, for if historical materialism is true, marxist sociology-which follows from historical materialism-cannot be wrong. But even if there would be no inconsistency, the following situation would be possible: Marxist sociology proves entirely wrong, but historical materialism (the “basis” of marxist sociology) will not be abandoned. Furthermore, Hahn maintains that by means of empirical research (observation and experiment) the central hypotheses of marxist sociology cannot be tested, namely the “essence of appearances.” But he is at a loss for arguments; so every hypothesis can be immunized against falsification by declaring that it describes the “essence” of certain “appearances.” One further strategy of immunization Hahn introduces, is the rule that in an explanation only marxist laws may be used. So it is not possible to confront marxist and nonmarxist hypotheses. This rule eliminates a very effective kind of criticism, namely the confrontation of inconsistent theories.     

Engaging consumers in esthetic offerings: conceptualizing and developing a measure for arts engagement

• As the arts face a number of challenges, including changing audience tastes and inconsistent ticket purchasing behavior, there have been calls for innovative approaches to marketing. Experts in the field have suggested that “engaging experiences” in the arts be cultivated to aid in audience development efforts. However, in the literature, little attention has been devoted to defining what encompasses an “engaging experience” in the arts. This research addresses this gap by exploring the concept of “engagement in the arts” and developing a measurement tool, which accesses overall “arts engagement.” It applies emerging theories from the customer engagement and brand experience literatures to conceptualize “arts engagement.” In four studies, an arts engagement scale is tested for its validity, reliability, and its relationship with important outcomes in the consumption experience. Implications are discussed for marketing the arts as well as other consumption contexts that incorporate performance and artistic‐based elements, including service delivery and experiential marketing.

Copyright © 2015 John Wiley & Sons, Ltd.     

From market to hierarchy: An empirical assessment of a supply chain governance typology

This study performs an empirical assessment of the highly influential supply chain governance typology put forth in Gereffi et al. (2005). In spite of the influence this Global Value Chain (or GVC) Typology has had, there have been few (if any) attempts to empirically assess its alignment with real-world supply chain structures and to establish a baseline for its predictive utility. The GVC Typology is assessed for face and nomological validity through testing of its key dimensions in relation to purchasing-logistics integration and supplier performance measures, using an information-processing theory framework. The GVC Typology appears to have considerable face validity as actual supply chain governance structures aligned well with those it proposes. It also has reasonable predictive power with regards to governance dimensions and integration, and in some connections between governance types, integration, and supplier performance. This study provides researchers with the tools to move this typology beyond the “conceptual” stage in their work, allowing for holistic and higher-level assessments of supply chain governance structures and changes. It may also help researchers and managers to consider when and to what extent purchasing-logistics integration should be fostered.     

Explaining the Normality of Informal Employment in Ukraine: A Product of Exit or Exclusion?

This article evaluates critically the competing explanations for the persistence and growth of informal employment in contemporary societies. These interpret the normality of informality either through a structuralist lens as arising out of “exclusion” from state benefits and the circuits of the modern economy or through a neo‐liberal and/or post‐structuralist lens as driven by the voluntary “exit” of workers out of formal institutions and into this alternative realm. To evaluate critically the validity of these competing explanations, this article reports a 2005/6 survey of informal employment in post‐socialist Ukraine. Analyzing the results of 600 face‐to‐face interviews, the finding is that either/or explanations need to be transcended. Informal employment is neither universally driven by exclusion nor exit. Instead, some participate mostly due to exclusion, others mostly for exit rationales, and some for a combination of the two, with different mixtures across different populations and types of informal employment. The outcome is a call to move towards more context‐bound understandings of the pervasiveness of informality through greater appreciation of the heterogeneity of this sphere and how both exit and exclusion are variously entwined in different settings.     

关于清洁生产的价值分析与比较

本文将清洁生产作为价值工程的研究对象,对其进行价值分析和比较,研究在产品生产领域推行清洁生产的有效性。价值分析表明,推行“清洁生产”不仅仅是实现可持续发展战略或是环境保护的需要,同时也可为企业谋取更大的利益,企业应当有内在动力自觉实施“清洁生产”的经营管理模式。     

On nonparametric latent trait models

Some nonparametric latent trait models for dichotomous data are considered. We deal with n subjects, each answering to the same set of of k items, each item being scored dichotomously. We are interested in ordering item difficulties α₁,...α_k . In Sec. 2 it is shown that in the considered nonparametric models the ordering is identifiable. Then an order estimator is defined and its quality is described by the probabilities of correct, wrong and deferred decision. Asymptotic behaviour of these probabilities are considered for n→∞ and any k≥2. The hypothesis that the probability of wrong decision diminishes when the model is “more distant” from so called random response model, is proved for n≤3 and verified numerically for n≥3. In Sec. 4 we discuss critically some parameters of nonparametric models known in the literature as “coefficients of scalability”. In particular, for k=2 their connections with the evaluation of positive dependence are considered.     

DEA-R: ratio-based comparative efficiency model, its mathematical relation to DEA and its use in applications

We propose a new mathematical model for efficiency analysis, which combines DEA methodology with an old idea—Ratio Analysis. Our model, called DEA-R, treats all possible ratios “output/input” as outputs within the standard DEA model. Although DEA and DEA-R generate different summary measures for efficiency, the two measures are comparable. Our mathematical and empirical comparisons establish the validity of DEA-R model in its own right. The key advantage of DEA-R over DEA is that it allows effective integration of the model with experts’ opinions via flexible restrictive conditions on individual “output/input” pairs.     

Inefficient NGO labels: Strategic proliferation and fragmentation in the market for certification

Nongovernmental organization (NGO) certification is a prerequisite for corporate engagement in enhanced social behaviors in many settings. Labels with broad scope (like “sustainability”) coexist with niche competitors much narrower in scope (like “bird‐friendliness”). When NGOs compete for adoptions, the wrong suite of schemes emerges, providing a rationale for regulation. An incumbent NGO may strategically narrow the breadth of its label to deter entry of competing schemes, reducing welfare. Even when entry is accommodated, welfare is compromised. Modeling multi‐issue competition between NGOs allows us to be the first to analyze label fragmentation and provide a novel perspective on proliferation that has frustrated practitioners.     

Can Good Apples Be Mixed with Bad Economics? A Mengerian Critique of the Alchian and Allen Theorem

Abstract . The Alchian and Allen Theorem has been a popular staple of many economics classes since Armen Alchian and William Allen first introduced it in their well‐known text University Economics. The Theorem says that the addition of the same fixed cost to two similar goods will result in an increase of demand for the higher‐priced, “higher‐quality” good relative to the lower‐quality item. Response to the Theorem ranges from an informal comment that it is a “parlor trick” to it being called the “Third Law of Demand.” We review some of the literature, and use Carl Menger's economic analysis to challenge the Theorem's validity. Based on Menger's analysis, we conclude that the Theorem is not, in fact, a theorem because it is does not describe a general case, but instead only applies in some cases, thereby becoming, at best, a special case of Menger's more general analysis. Further, we find evidence that Alchian and Allen themselves unwittingly contradict their own argument elsewhere in one of their texts.     

Inflationary equilibrium in a stochastic economy with independent agents

We prove the existence of stationary monetary equilibrium with inflation in a “Bewley” model with constant aggregate real variables but with idiosyncratic shocks to the endowments of a continuum of individual agents, when a central bank stands ready to borrow or lend fiat money at a fixed nominal rate of interest and the agents face borrowing constraints. We also find that, in the presence of real micro uncertainty about individual endowments, the rate of inflation is higher (equivalently, the real rate of interest is lower) than it would be in a “certainty-equivalent economy”; to wit, one in which every agent’s endowment is replaced by its expected value. Thus, underlying microeconomic uncertainty and borrowing constraints are shown to generate additional inflation.     

Tragedy of the Partnership: A Critique of Elinor Ostrom

Elinor Ostrom thinks she has discovered a third way apart from private and government property: the commons. In her view, there is no “tragedy” associated with this third option. The present article takes strong issue with her. Our claim is that she has not properly distinguished between a commons and partnership arrangements. In the former case, outsiders cannot be excluded from entry; in the latter, they can. The reason for this confusion between the commons and private property in Ostrom's work is that she believes private property is possible only if government protects and enforces it. We show by using various historical examples that this assumption is wrong, and hence the central tenet of Ostrom's model of the commons fails.     

Driving the electric bandwagon: The dynamics of incumbents' sustainable innovation

Given that entire industries face sustainability challenges, it is important to understand the dynamics that lead “firms‐in‐an‐industry” to engage in sustainable product innovation. To provide more insight into the question of how innovation activities spread from individual firm action to an industry‐wide engagement, this paper examines the automobile industry and the development of electric vehicles (EVs). The analysis covers automobile incumbents over a crucial decade for EV development in the industry, focusing on the different strategic motives that especially the so‐called “first movers” used to justify their earlier engagement. We find that EVs became a core pillar of the incumbents' technology strategies through a combination of coercive, normative, and mimetic pressures. Yet, the strategic motives to engage in EVs stayed poles apart between different companies. The insights from our study are relevant for those interested in the diffusion of sustainable product innovation and in incumbent behaviour in sustainability transitions.     

Plausibility,not science,has dominated public discussions of the COVID pandemic

COVID-19 put to the test the understanding of the meaning of “science” by the medical profession, the media, and the public. Unfortunately, the vast majority of individuals were misled by those who spoke on behalf of science but who confused plausible stories with scientific explanation. Scientific understanding comes from theories, which generate hypotheses, which are, in turn, confirmed or disconfirmed by empirical evidence that is evaluated using statistical methods. In our daily lives, we may judge the validity of a hypothesis based on its plausibility, and for most trivial cases that is sufficient. But it is a mistake to imagine that science can proceed on that basis. Yet, scientists themselves are often confused about the foundations of the scientific method. “Evidence-based medicine” is now being used to discredit all medical evidence other than randomized controlled trials (RCTs), the supposed “gold standard” of medical research. This insistence on a single method that is deemed “best practice” has the ironic effect of replacing science with plausibility in medicine. RCTs fail to live up to their vaunted status because of frequent insufficiencies in randomization related to confounding errors and their magnitudes. When randomized trials were compared with observational studies in a meta-analysis of thousands of studies, the differences in conclusions were negligible. The entire framework of COVID-19 policy has been based on plausible hypotheses, not backed by genuine scientific evidence. Critics are correct in claiming that COVID-19 policies have been based on politics, not science.     

The effectiveness of using e-collaboration tools in the supply chain: an assessment study with system dynamics

Developments in information technology, in recent years, have enabled major advances in electronic commerce, which is growing at a very fast pace. Although business-to-consumer (B2C) e-commerce seems to be slowing down due to economic conditions, business-to-business (B2B) e-commerce still represents the next generation of business automation.Taking advantage of new technologies, today provides an opportunity, but will be a must in the future. The use of Internet e-collaboration tools will increase in this new era. They play a role of “value creation enabler”, but at the same time they generate a wide range of new business and market “complexities” that companies have to face.This paper presents a classification of “managerial spaces” where multiple trading partners share critical information using e-collaboration tools and assesses the possible local and global impact on the supply chain (SC) performance. This is made by means of a SC model conceptualization and a simulation study with system dynamics.     

基于“四种能力”提升的物流实践教学运行机制探索

基于"四种能力"提升的专业能力培养要求是高校物流人才培养的方向。科学有效的实践教学体系运行机制是高质量技术型物流人才培养的重要保证。文章分析了当前高校本科物流管理专业实践教学体系及其运行机制存在的主要问题,提出了基于"四种能力"提升的高校物流管理专业实践教学体系运行机制的构建策略。     

The non-relevance of the elusive holy grail of asset pricing tests: The “true” market portfolio does not alter CAPM validity conclusions

Empirical evaluations of CAPM usually attach a caveat that rejection is conditional on the choice of market proxy. We explore the criticality of the proxy choice disclaimer. Using different proxies and comprehensive simulations of the unobserved “true” market in Fama–MacBeth tests of CAPM, we find that the significance (t-statistics) corresponding to betas remain consistently unaltered, even if the proxy is a small fraction of or has a low correlation with the true market. The constancy of t-statistics persists in a simulated true-CAPM world as well: if CAPM is indeed valid, the choice of proxy is unlikely to reject it erroneously. Identity of the elusive true market portfolio and the choice of representative proxy cannot overturn conclusions on validity of CAPM based on Fama–MacBeth tests. Roll’s Critique, incontrovertible in theory, may be quite forgiving in practice – CAPM cannot be resurrected by a “closer” approximation of the elusive true market portfolio when it has commonly been rejected.     

Analysis of the cross-region risk contagion effect in stock market based on volatility spillover networks: Evidence from China

This article uses the stock market regional indexes of 31 provinces (include Province-level municipalities and Minority Autonomous Regions) in mainland China as a sample, and constructs an inter-regional volatility spillover network of China’s stock market based on the GARCH-BEKK model. Through network centrality analysis, Diebold and Yilmaz's spillover index method and block model analysis, we comprehensively analyze the risk contagion effect among different regions in China’s stock market. The empirical results show that: (i) The risk contagion intensity (risk reception intensity) in various regions of China’s stock market has a typical “core-periphery” distribution characteristic due to regions’ different levels of economic development. (ii) There are obvious risk spillover effect in China’s stock market, among which the economically developed regions along the southeastern coast of China, such as Beijing, Shanghai, Zhejiang and Jiangsu, are the main risk transmitters, while the economically undeveloped regions in the Midwest of China, such as Xinjiang, Xizang, Gansu, Nei Menggu and Qinghai are the main risk receivers. (iii) Each region is divided into 4 blocks according to their respective roles in the risk spillover process in China’s stock market. Block 1 that is composed of the economically underdeveloped regions in the Midwest is the “main benefit block”, it acts as a “receiver”. Block 2 that is composed of regions with strong economic growth vitality in the Midwest is a “Bilateral spillover block”, it both plays the role of “receiver” and “transmitter”. Block 3 that is composed of developed regions along the southeast coast, it acts as a “transmitter”; Block 4 that is composed of the relatively fast-growing regions in the Southwest is the “brokers block”, it serves as a “bridge”. The results of this article can provide some reference for investors in financial institutions and decision makers in financial regulators.     

The Effect of Follow-up Mailings on The Response Rate and Response Quality in Mail Surveys

Numerous experts have demonstrated that the increase in the number of contacts produces a “lengthening” of the field work, although this lag in the analysis of the data is “compensated” by the increase in the response rate that is achieved through this second, third, and successive “contacts”. However, can it be said that these interviewees respond with the same dedication as those who responded from the initial contact? Or could it be that they will try to respond “hastily” so as not to be “harassed” further? The aim of this study is to try to find some answers to these questions by giving the results of the first ever research carried out in Spain using the TDM of Dillman in mail surveys.     

A note on measuring political participation in comparative research

This article presents an application of Prezeworski and Teune's so-called “identity-equivalence method” to a large set of indicators of political participation. By relaxing commonly held assumptions about necessary distinctions among types of participation, it is found that the distinction between “conventional” and “unconventional” modes of participation is unnecessary, while the distinction between “government” and “nongovernment” has some merit. The findings also lend further support to the claims of Prezeworski and Teune that the identity-equivalence method is preferable to the identical indicator method.