Search results for "Mathematical logic"
showing 10 items of 394 documents
Corporate Governance Configurations and Corporate Social Responsibility Disclosure: Qualitative Comparative Analysis of Audit Committee and Board cha…
2020
[EN] Drawing on the complexity theory and responding to the recent calls to use such creative methods that mix between a quantitative and qualitative approach. Therefore, this study fills the literature gap, adding novelties, showing evidence from the unexplored (or underexplored) European context and, consequently, shedding light to inconclusive results in previous research concerning the effect of audit committee (AC) and board characteristics on corporate social responsibility (CSR) disclosure by applying a novel research methodology: the fuzzy set qualitative comparative analysis. The data were collected from Eikon database for a sample of the top 69 non¿financial European companies (ba…
Evolutionary psychological consumer research:Bold, bright, but better with behavior
2020
Abstract This special issue includes state-of-the-art papers that leverage various theories from evolutionary psychology (EP) to shed light on important consumption-related phenomena. Our guest editorial provides an overview of this EP-based consumer research, highlighting the key content, common denominators, and significant strengths of the articles. The papers cover a wide variety of topics, characteristic of evolutionary-informed research, that we structure around the following three themes: (1) Mating, marketing, and meaningful motivating forces, (2) Conspicuous consumption and salient signs of “showing off,” and (3) Human hormones and biologically-based business research. We close our…
Tax effect on Spanish SME optimum debt maturity structure
2011
Abstract This paper analyzes the influence of the tax effect on small and medium-sized enterprise (SME) debt maturity structure. This study builds a dynamic adjustment model which endogenizes optimum structure and assumes the existence of adjustment costs. Using Spanish data, the model is estimated using a system-GMM regression to a complete panel (11,028 firms) covering 1997–2004. SMEs adjust to their target at a speed of about 37% annually, the equivalent of employing about 20 months to cover only half of the existing gap. This rate is lower than those reported in other similar papers studying large companies with publicly tradable equity.
Website design and e-consumer: effects and responses
2007
This research is focused on the study of the effects of different web layouts ? related to navigational structure and presentation of products ? on internal and behavioural consumer responses within an online shopping situation. Moreover, in our model we have introduced two types of variables ? involvement and atmospheric responsiveness ? which mediate the relationships between the constructs analysed. A website and a tracking behaviour methodology for a fictitious apparel retailer have been developed in order to carry out a 2?2 between-subjects experimental study. Our results show that if web marketers design stores without restrictive navigation cues (offering, in consequence, freedom of …
The dynamics and characteristics of buying centre networks
2009
PurposeThe purpose of this paper is to study does the structure of buying centre networks dynamically change between buying situations and during the buying processes. Furthermore, the influence of organizational culture on participation, extensivity, lateral involvement, and vertical involvement of buying centre networks is studied.Design/methodology/approachA qualitative study with empirical data gathered by semi‐structured interviews with the help of structured questions among Finnish business organizations early in 2007. The empirical data consist of 40 interviews conducted among small and medium sized companies. For the data analyses, the data were separately classified into themes rel…
Creating value through product-service-software systems in institutionalized ecosystems – The case of autonomous ships
2021
Abstract Introducing product-service-software systems (PSSS) to the market requires forming an enabling ecosystem, which can be largely based on incumbent business ecosystems. Creating value through PSSS with autonomous capabilities will likely encounter numerous challenges related to the lock-ins in current ecosystem structure. We use institutional theory as a lens and autonomous ships as the case to shed some light on types and impacts of these barriers. We identify a set of institutional barriers pertinent to regulatory, normative and cultural-cognitive pillars of institutions. We further analyze how institutional barriers affect creating, delivering, and capturing value of autonomous sh…
Fuzziness as an experimental science: an homage to Claudio Moraga
2016
In this contribution we collect a few considerations and remarks on such apparently unrelated topics as: an early paper by Norbert Wiener on the Nature of Mathematics; mathematical logic’s heritage on the formalization of reasoning; cognitive aspects on the modalities of drawing conclusions. We hope that reading the present paper will show that they are, neverthless, related in some way at least for what regards the problem of reasoning in the presence of uncertainty, showing a network of concepts that can help considering again the innovating aspects of fuzziness—in our opinion a more than fit homage to Claudio Moraga’s interdisciplinary approach to fuzziness.
Back to “Reasoning”
2016
Is rigor always strictly related to precision and accuracy? This is a fundamental question in the realm of Fuzzy Logic; the first instinct would be to answer in the positive, but the question is much more complex than it appears, as true rigor is obtained also by a careful examination of the context, and limiting to a mechanical transfer of techniques, procedures and conceptual attitudes from one domain to another, such as from the pure engineering feats or the ones of mathematical logic to the study of human reasoning, does not guarantee optimal results. Starting from this question, we discuss some implications of going back to the very concept of reasoning as it is used in natural languag…
The guarded fragment with transitive guards
2004
The guarded fragment with transitive guards, (GF+TG), is an extension of the guarded frag- ment of 9rst-order logic, GF, in which certain predicates are required to be transitive, transitive predicate letters appear only in guards of the quanti9ers and the equality symbol may appear everywhere. We prove that the decision problem for (GF+TG) is decidable. Moreover, we show that the problem is in 2EXPTIME. This result is optimal since the satis9ability problem for GF is 2EXPTIME-complete (J. Symbolic Logic 64 (1999) 1719-1742). We also show that the satis- 9ability problem for two-variable (GF+TG) is NEXPTIME-hard in contrast to GF with bounded number of variables for which the satis9ability …
Exploring students’ proof comprehension of the Cauchy Generalized Mean Value Theorem
2019
AbstractUndergraduate students majoring in mathematics often face difficulties in comprehending mathematical proofs. Inspired by a number of studies related to students’ proof comprehension, and Mejia-Ramos et al.’s study in particular, a test was designed in relation to the proof comprehension of the Cauchy Generalized Mean Value Theorem (CGMVT). The test mainly focused on (a.) investigating students’ understanding of relations between the statements within the CGMVT proof and (b.) the relations between the CGMVT and other theorems. Thirty-five first-year university students voluntarily participated in this study. In addition, 10 of these students were subsequently interviewed to seek thei…