Interactivity and Soft Computing in Portfolio Management: Should Farmers Own Food and Agribusiness Stocks?

This article proposes a fully integrated and interactive elicitation-optimization procedure for portfolio management. A soft computing approach based on fuzzy logic is developed as an alternative to the traditional mean variance model and compromise programming approach. The models are applied to farmers to examine whether they should buy publicly traded food and agribusiness firms stocks rather than invest in a broader market stock portfolio. Results suggest that investments in publicly traded food and agribusiness stocks allow farmers to capture additional benefits beyond those of simply diversifying in the broader market.     

Managing the co-creation of value

Central to service-dominant (S-D) logic is the proposition that the customer becomes a co-creator of value. This emphasizes the development of customer–supplier relationships through interaction and dialog. However, research to date suggests relatively little is known about how customers engage in the co-creation of value. In this article, the authors: explore the nature of value co-creation in the context of S-D logic; develop a conceptual framework for understanding and managing value co-creation; and utilize field-based research to illustrate practical application of the framework. This process-based framework provides a structure for customer involvement that takes account of key foundational propositions of S-D logic and places the customer explicitly at the same level of importance as the company as co-creators of value. Synthesis of diverse concepts from research on services, customer value and relationship marketing into a new process-based framework for co-creation provide new insights into managing the process of value co-creation.     

Combination of evidence from multiple administrative data sources: quality assessment of the Austrian register‐based Census 2011

This article investigates the quality of register data in the context of a standardized quality framework. The special focus of this work lies on the assessment of census data and how to deal with uncertainty that arises from multiple sources (registers). To take the uncertainty associated with support and conflict between several registers into account, Dempster–Shafer's theory of evidence is applied. This ‘fuzzy’ approach allows us to investigate the quality of databases with multiple underlying sources for a single attribute and to provide both quality measures and plausibility intervals.     

Two-Party Negotiation Modeling: An Integrated Fuzzy Logic Approach

Game theoretic models attempted to predict unique equilibrium outcomes of negotiations with limited success. The imprecise character of negotiation is often altered to fit the game theorist's exacting approach. Alternative models deviated from the formal game theoretic approach and attempted to accommodate concepts such as negotiator power and time pressure. In this paper, we introduce a model which uses a fuzzy logic approach to deal with the imprecision in the negotiation process and to integrate several negotiation theories. The new model is used to simulate multiple-issue, two-party negotiations and results are consistent with established negotiation theories.     

弗雷格概念论探微

弗雷格的研究方法与研究成果对推进逻辑与哲学研究都有重要意义。本文从弗雷格的具体论述出发 ,阐明了弗雷格的独特的概念论体系及其逻辑本体论 ,然后依据其思想对语义悖论做了简要解析 ,指明语义悖论或因符号指谓不清或因错用谓词而不成立。     

部队装备保障能力逻辑结构分析

明确装备保障能力的内涵是研究装备保障能力生成的首要问题。文章在总结以往对装备保障能力认识的基础上．基于系统整合原理提出了装备保障能力的系统整合观描述．从微观、中观、宏观三个维度构建了机步师装备保障能力的逻辑结构,并对其进行了分析,为装备保障能力更快更好地生成提供理论指导。     

生态治理:政府主导作用的逻辑理路、基本样态 和多维转型

在推进国家治理体系和治理能力现代化的进程中,生态治理在国家治理体系中举足轻重。面对经济转型带来的各种生态环境问题,基于市场经济的局限性和政府基本职能的价值指向,政府在生态治理中起主导作用。提供财政、税收、金融体制支撑和决策、法律、监督、激励、补偿机制保障是政府发挥生态治理主导作用的基本样态。价值理念、思维方式和行动逻辑三个维度的转型则是对政府提升生态治理能力的进一步诠释。     

IMC in digitally-empowering contexts: the emerging role of negotiated brands

In current digitally-empowering contexts, the Integrated Marketing Communications (IMC) paradigm may have lost its ‘original’ customer-centric focus. Drawing on service-dominant logic, the paper examines the changes to IMC when multiple sources of consumer power emerge as central in the value creation process. This change in the focus of IMC likely enables the emergence of negotiated brands, i.e. brands that focus on a marketplace where traditional marketer-created brand value may be replaced by buyer and seller co-created value. The paper argues that this novel type of brand structure represents an appropriate managerial response to multidimensional IMC approaches. As that occurs, four key issues (community-centric orientation, emergent strategy, hybrid communication mix, reciprocity-based assessment) emerge which lead to a number of research questions in the planning and execution of marketing communications in today’s digitally-empowered contexts. All these issues clearly highlight the consumers’ contributions to brand value co-creation, by reaffirming the ‘original’ outside-in perspective of IMC.     

Reasoning about knowledge of unawareness

Awareness has been shown to be a useful addition to standard epistemic logic. However, standard propositional logics for knowledge and awareness cannot express the fact that an agent knows that there are facts of which he is unaware without there being an explicit fact that the agent knows he is unaware of. We extend Fagin and Halpern's logic of general awareness to a logic that allows quantification over variables, so that there is a formula in the language that says “an agent explicitly knows that there exists a fact of which he is unaware.” Moreover, that formula can be true without the agent explicitly knowing that he is unaware of any particular formula. We provide a sound and complete axiomatization of the logic. Finally, we show that the validity problem for the logic is recursively enumerable, but not decidable.     

电子商务协议可追究性的Kailar分析与改进

可追究性是电子商务安全性的基本要求之一,Kailar逻辑是专门针对电子商务可追究性进行分析的逻辑。然而Kailar逻辑也存在不足。本文讨论了逻辑的一种缺陷——初始化假设不当而致Kailar逻辑不能正确分析各方的可追究性,并分析了出现这种缺陷的原因,提出了改进方案。