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Article
Publication date: 1 December 2000

V.I. Levin

A general description of a continuous (‐valued) logic is given, basic operations of the logic are defined, and some problems and particulars of their solutions are discussed…

Abstract

A general description of a continuous (‐valued) logic is given, basic operations of the logic are defined, and some problems and particulars of their solutions are discussed. First, we define algebra of continuous logic and enumerate its basic unary, binary and ternary functions. All laws of continuous logic are compared with laws of discrete binary logic. We discuss how to enumerate all functions of continuous logic with specified number of variables and how to represent the functions in a standard form. Procedures of minimization of continuous logical functions and their decomposition into the functions with less clarity are exploited. The procedures are compared with their counterparts from binary logic. We also tackle problems of analysis and synthesis of continuous logical functions, and show that the problem of synthesis may not have a solution. Basics of differential and integral calculus are applied to continuous valued logic. We demonstrate that any continuous logical function has the points where a derivative does not exist. At the end of the paper we briefly discuss an incompleteness problem of continuous logic, application of continuous logic in mathematics, engineering and economy, give examples, draw a perspective of further development and supply extensive bibliography of Russian works in the field.

Details

Kybernetes, vol. 29 no. 9/10
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 December 2000

V.I. Levin

Outlines the basic results in the generalization of continuous‐valued logic. The survey is based on Russian publications. We consider an order logic, which is a generalization of…

Abstract

Outlines the basic results in the generalization of continuous‐valued logic. The survey is based on Russian publications. We consider an order logic, which is a generalization of continuous‐valued logic where operations of maximum selection (disjunction) and minimum selection (conjunction) are substituted with operation of selection of rth order argument, following the values of the arguments. Shows that this new operation is expressed in a superposition of disjunctions and conjunctions of continuous‐valued logic. Various classes of logical determinants are considered; they are thought of as numerical characteristics of matrices, expressible in operations of continuous‐valued logic. Namely, investigates order determinants, which generalize order logical operation of several arguments in matrix form, and determinants with various constraints on subsets of matrix elements. Properties of all logical determinants are discussed, compared with properties of algebraic determinants; techniques of computation of logical determinants are supplied. Also investigates a predicate algebra of choice, which generalizes continuous‐valued logic in case of simulation of discontinuous functions; a hybrid logic of continuous and discrete variables; a logic‐arithmetic algebra, which includes, in addition to continuous‐logic operations, four arithmetical operations; a complex algebra of logic, where supportive set C is a field of complex numbers. A description of each algebra includes basic laws, which are compared with the laws of conventional continuous‐valued logic. Several generalizations of continuous‐value logic operations to operations over matrices, random and interval variables are discussed. Some applications of continuous logics are indicated.

Details

Kybernetes, vol. 29 no. 9/10
Type: Research Article
ISSN: 0368-492X

Keywords

Book part
Publication date: 29 October 2018

Viktor P. Kuznetsov, Ekaterina P. Garina, Natalia S. Andryashina and Elena V. Romanovskaya

The chapter deals with the promotion of competitiveness of national producers as compared to the main leaders in the industry.

Abstract

Purpose

The chapter deals with the promotion of competitiveness of national producers as compared to the main leaders in the industry.

Methodology

The system management of the process of creating and mastering the production of a new product is based on effective change management, development of organizational and technical management systems, business-to-business interaction systems, business solutions relating to product creation in the industry. Systemization of problems and identification of ways of development of theory and methodology of creation of a new product by the domestic manufacturing companies can be performed by means of implementation of continuous acquisition and life cycle support (CALS) systems.

Results

Today, the fundamental conceptual basis for the formation of information space of an enterprise and application of miscellaneous information systems is the concept of continuous information support of products throughout the entire life cycle – CALS. According to this concept, one can single out the following major objectives which are essential for an enterprise and can be achieved through information technologies: the automation of production management which was conventionally achieved through the use of MICS systems, and today it is achieved due to the use of the so-called ERP/CRM/SCM systems; product data management and automation of design and engineering analysis of structures and processes (PDM/PLM, CAD/CAM/CAE-system); information support of operation and aftersales service, integrated logistic support of products. The information technologies at the present stage are a prerequisite for achieving a competitive advantage by an enterprise, particularly if the enterprise is specialized in the production of high-technology products. The major purpose of information technologies at the enterprise is the maximum effective support of design processes, production processes and other processes running at the enterprise, creation of the information basis which enables the management to take decisions which help the enterprise to achieve a dominant position in the industry sector. For Russian companies, the problem of implementation and effective employment of CALS-technologies as a means of cardinal improvement in quality and competitiveness of science-intensive products, discussed in the chapter, is extremely topical.

Conclusions

For many companies, the employment of these technologies largely determines the ability to survive in the context of an intensifying competitive struggle in the domestic market and can be considered as an indispensable condition for maintaining and expanding the sales of products on the international market.

Article
Publication date: 1 February 1980

CAROL A. NIZNIK

An interdisciplinary approach for computing the point‐to‐point message delay, a measure of congestion in a computer communication network, is derived by the inclusion of a…

Abstract

An interdisciplinary approach for computing the point‐to‐point message delay, a measure of congestion in a computer communication network, is derived by the inclusion of a queueing theory result in a probabilistic automaton model. This network model is structurally composed of the interconnection of two distinct repetitive probabilistic automatons. The formulation of the solution is based on the network probability transition matrix which represents the state transitions for the number of customers in the GI/G/1 queue at each computer node and the intranode and internode port routing.

Details

Kybernetes, vol. 9 no. 2
Type: Research Article
ISSN: 0368-492X

Article
Publication date: 22 February 2021

Tarisai Kudakwashe Manyati and Morgen Mutsau

The sustainable skills that informal manufacturers use in volatile times remain poorly understood. This study explored the skills that the informal manufacturers used to navigate…

Abstract

Purpose

The sustainable skills that informal manufacturers use in volatile times remain poorly understood. This study explored the skills that the informal manufacturers used to navigate the uncertain business environment during the COVID-19 pandemic.

Design/methodology/approach

A total of 27 telephone interviews were conducted with informal entrepreneurs who were manufacturers of agricultural machinery at Mbare Magaba and Gaza home industry in Harare, Zimbabwe. Purposive and snow ball sampling were used to identify information rich sources. The authors used thematic analysis in identifying recurrent themes from this study.

Findings

The study results show that business agility motivated most informal manufacturers to restructure their business to sustain their operations. With the closure of formal companies, the informal manufacturers adopted slowing and narrowing loops through purchasing broken down agricultural machines for repairs or remanufacturing of durable machines for their low-income customer base. Most young and formally trained manufacturers adopted a prospector strategic behaviour as they used digital platforms to network with business associates for supplies, gathering market intelligence, making and receiving electronic payments and establishing virtual distant markets whilst the older manufacturers resorted mostly to a defender strategic behaviour of engaging their usual customers for repair jobs and a few referrals.

Originality/value

This study offers unique insights with respect to skills required for the sustainable and strategic management of small and medium enterprises during times of crisis.

Details

Journal of Entrepreneurship in Emerging Economies, vol. 13 no. 4
Type: Research Article
ISSN: 2053-4604

Keywords

Book part
Publication date: 30 November 2016

Robert L. Axtell

Certain elements of Hayek’s work are prominent precursors to the modern field of complex adaptive systems, including his ideas on spontaneous order, his focus on market processes…

Abstract

Certain elements of Hayek’s work are prominent precursors to the modern field of complex adaptive systems, including his ideas on spontaneous order, his focus on market processes, his contrast between designing and gardening, and his own framing of complex systems. Conceptually, he was well ahead of his time, prescient in his formulation of novel ways to think about economies and societies. Technically, the fact that he did not mathematically formalize most of the notions he developed makes his insights hard to incorporate unambiguously into models. However, because so much of his work is divorced from the simplistic models proffered by early mathematical economics, it stands as fertile ground for complex systems researchers today. I suggest that Austrian economists can create a progressive research program by building models of these Hayekian ideas, and thereby gain traction within the economics profession. Instead of mathematical models the suite of techniques and tools known as agent-based computing seems particularly well-suited to addressing traditional Austrian topics like money, business cycles, coordination, market processes, and so on, while staying faithful to the methodological individualism and bottom-up perspective that underpin the entire school of thought.

Details

Revisiting Hayek’s Political Economy
Type: Book
ISBN: 978-1-78560-988-6

Keywords

Article
Publication date: 1 June 1997

James L. Price

Addresses the standardization of the measurements and the labels for concepts commonly used in the study of work organizations. As a reference handbook and research tool, seeks to…

16038

Abstract

Addresses the standardization of the measurements and the labels for concepts commonly used in the study of work organizations. As a reference handbook and research tool, seeks to improve measurement in the study of work organizations and to facilitate the teaching of introductory courses in this subject. Focuses solely on work organizations, that is, social systems in which members work for money. Defines measurement and distinguishes four levels: nominal, ordinal, interval and ratio. Selects specific measures on the basis of quality, diversity, simplicity and availability and evaluates each measure for its validity and reliability. Employs a set of 38 concepts ‐ ranging from “absenteeism” to “turnover” as the handbook’s frame of reference. Concludes by reviewing organizational measurement over the past 30 years and recommending future measurement reseach.

Details

International Journal of Manpower, vol. 18 no. 4/5/6
Type: Research Article
ISSN: 0143-7720

Keywords

Article
Publication date: 10 February 2023

Ying Zhu, Yong Wang, Joicey Wei and Andy Hao

Few studies illustrate how contextual effects (e.g. assimilation and contrast) in pay-per-click ad design may impact consumers' attitudes and purchase intention. To fill this…

Abstract

Purpose

Few studies illustrate how contextual effects (e.g. assimilation and contrast) in pay-per-click ad design may impact consumers' attitudes and purchase intention. To fill this research gap, the authors provide theoretical predictions and empirical evidence on how ad design may prompt an assimilation and/or a contrast effect that may influence consumers' attitudes toward the ad and the brand and purchase intention. They also investigate whether the impact of contextual effects on consumers' decisions depends on the level of vividness in the ad.

Design/methodology/approach

A 2 (vividness: dynamic motion vs. static page) × 2 (information design: assimilation vs. contrast) × 2 (aesthetic design: assimilation vs. contrast) between-subjects experimental design is used to examine the effects of vividness, information design and aesthetic design. Conditional process analysis is used to assess the mediating role of attitudes toward the ad and the brand in the relationship between contextual effects and purchase intention.

Findings

For dynamic ads (i.e. high vividness) but not for static ads (i.e. low vividness), combined information contrast and aesthetic contrast designs generate a more favorable attitude toward the brand and a higher purchase intention than do combined information assimilation and aesthetic assimilation designs. Notably, combined information contrast and aesthetic contrast designs have the strongest effects than any other combination of assimilation and contrast designs of information and aesthetics. Attitudes toward the ad and the brand are significant mediators between contextual factors and intention to purchase.

Research limitations/implications

The study examines the effectiveness of online ads from a new theoretical angle based on the attributes of pay-per-click ads.

Practical implications

The results suggest that when advertisers decide to use dynamic ads, they should adopt a contrast design for both the ad information and its aesthetics.

Originality/value

This study fills a research gap in the contextual effects literature, including providing evidence of an underlying process in the relationship between certain contextual effects and purchase intent. It also extends previous findings of assimilation/contrast in information design to aesthetics design and advances the literature on vividness by examining a moderation effect of vividness.

Details

Journal of Research in Interactive Marketing, vol. 17 no. 6
Type: Research Article
ISSN: 2040-7122

Keywords

Article
Publication date: 13 September 2011

Imoh Antai

The purpose of this paper is to propose a conceptualization of supply chain vs supply chain competition using the ecological niche approach. It suggests a probabilistic…

3125

Abstract

Purpose

The purpose of this paper is to propose a conceptualization of supply chain vs supply chain competition using the ecological niche approach. It suggests a probabilistic methodology for evaluating competition from time series data, using overlap in the utilization of services provided by critical providers as a source of competition.

Design/methodology/approach

Literature on ecological niche theory and competition is explored and given the uncertainty that surrounds the operation and management of supply chains, a probabilistic approach to the analysis of supply chain vs supply chain competition (via the Bayesian inference) is advocated. Simulated data are used to illustrate the methodology.

Findings

Should an area of overlap be identified, ecological niche theory provides a sensible approach to identifying the nature and extent of competition between supply chains. Applicability of the methodology is not limited to supply chain vs supply chain competition.

Research limitations/implications

The data used for the analysis of competition between supply chains are computer generated and use a single niche dimension. Although this was done to merely test/validate the proposed model, the approach is somewhat oversimplified. However, the model is readily extendable to multiple niche dimensions.

Originality/value

The proposed approach offers a simple and straight‐forward method of estimating competition in general, and supply chains vs supply chain competition in particular. Attempts at using the niche theory of competition in this context are so far inconspicuous. Hence, approaching competition in this way contributes to furthering our understanding of competitive interaction especially in supply chains, whose prospect is yet to be pointed out in literature.

Book part
Publication date: 9 December 2020

Zhan Furner, Keith Walker and Jon Durrant

Krull (2004) finds that US multinational corporations (MNCs) increase amounts designated as permanently reinvested earnings (PRE) to maximize reported after-tax earnings and meet…

Abstract

Krull (2004) finds that US multinational corporations (MNCs) increase amounts designated as permanently reinvested earnings (PRE) to maximize reported after-tax earnings and meet earnings targets. We extend this research by examining the relationship between executive equity compensation and the opportunistic use of PRE by US MNCs, and the market reaction to earnings management using PRE designations. Firms use equity compensation to incentivize executives to strive for maximum shareholder wealth. One unintended consequence is that executives may engage in earnings management activities to increase their equity compensation. In this study, we examine whether the equity incentives of management are associated with an increased use of PRE. We predict and find strong evidence that the changes in PRE are positively associated with the portion of top managers' compensation that is tied to stock performance. In addition, we find this relationship to be strongest for firms that meet or beat forecasts, but only with the use of PRE to inflate income, suggesting that equity compensation incentivizes managers to opportunistically use PRE, especially to meet analyst forecasts.

Further, we provide evidence that investors react negatively to beating analysts' forecasts with the use of PRE, suggesting that investors find this behavior opportunistic and not fully convincing. This chapter makes an important contribution to what we know about the joint effects of tax policy, generally accepted accounting principles, and incentive compensation on the earnings reporting process.

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