Gender representation and organizational size: examining opportunities for members’ involvement in membership organizations

Members are the most important stakeholders in membership organizations; their involvement can enhance organizational effectiveness, accountability, and legitimacy. Previous literature, however, has primarily explored these concepts by focusing on staff involvement or client participation. This paper examines the determinants of members’ involvement in membership organizations using cross-sectional data from Lebanese membership organizations. Primary findings suggest that members’ involvement is affected by the gender of leadership, internal fiscal capacity, and the size of the organization; small organizations, those led by women, and organizations with greater internal fiscal capacity are more likely to have greater participation by members.     

Distorted representation in visual tourism research

Tourism research has recently been informed by non-representational theories to highlight the socio-material, embodied and heterogeneous composition of tourist experiences. These advances have contributed to further reflexivity and called for novel ways to animate representations. On this background, this article develops the notion ‘distorted representation’ to illustrate that blurred and obscure photos can in fact be intelligible and sensible in understanding tourism. Through an exploration of the overwhelmed and unintended practices of visual fieldwork, distorted representation illustrates how photographic materialities, performativities and sensations contribute to new tourism knowledges. While highlighting the potential of distorted representation, the article posits a cautionary note in regards to the influential role of academic journals in determining the qualities of visual data. The article exemplifies distorted representation through three impressionistic tales derived from ethnographic research on the European rail travel phenomenon: interrail.     

A comparison of the effectiveness of unions and non-union works councils in Korea: can non-union employee representation substitute for trade unionism?

Using survey data from 857 employees of three unionized and three non-union establishments in Korea, this study compares the effectiveness of unions and non-union employee representation (NER). Union members appear to expect more from and to be more satisfied with unions than is the case for non-union employees regarding the activities of non-union works councils. This tendency is stronger in regard to distributive and employee advocacy issues than to mutual interest issues. Union members express stronger commitment to their unions than do non-union employees to their works councils. However, union members and works council members are not significantly different in terms of organizational commitment, job satisfaction and perceived industrial relations climate. Overall, the findings indicate that the structural weaknesses of NER are more evident than its positive attitudinal effects.     

THE EIGENFUNCTION EXPANSION METHOD IN MULTI-FACTOR QUADRATIC TERM STRUCTURE MODELS

We propose the eigenfunction expansion method for pricing options in quadratic term structure models. The eigenvalues, eigenfunctions, and adjoint functions are calculated using elements of the representation theory of Lie algebras not only in the self-adjoint case, but in non-self-adjoint case as well; the eigenfunctions and adjoint functions are expressed in terms of Hermite polynomials. We demonstrate that the method is efficient for pricing caps, floors, and swaptions, if time to maturity is 1 year or more. We also consider subordination of the same class of models, and show that in the framework of the eigenfunction expansion approach, the subordinated models are (almost) as simple as pure Gaussian models. We study the dependence of Black implied volatilities and option prices on the type of non-Gaussian innovations.     

Probabilistic sophistication without completeness

This is a study of probabilistically sophisticated choice behavior when the preference relation is incomplete. Invoking the analytical framework of Anscombe and Aumann (1963) and building on the work of Machina and Schmeidler (1995), the paper provides an axiomatic characterization of the general multi-prior multi-utility probabilistically sophisticated representation. In addition, the paper examines the axiomatic foundations for two special cases: complete beliefs and complete tastes. In the former case, the incompleteness is due to ambiguous tastes and in latter case it is due to ambiguous beliefs.     

外部信息自适应更新的SCMA系统译码方案

现有上行稀疏码多址接入（Sparse Code Multiple Access，SCMA）通信系统采用的译码算法中，基于串行策略的消息传递算法（Message Passing Algorithm，MPA）因其在每次迭代过程只选择单个消息进行更新，存在着收敛速度较慢等问题。针对以上问题，提出外部信息自适应更新的MPA算法，每次迭代过程中自适应选取多个残差值较大、相互独立的节点，更新其外部信息以达到提高计算效率的目的。仿真结果表明，该算法可有效提升译码性能，在计算复杂度与译码性能之间取得了较好的平衡。     

Share the Gaze: representation of destination image on the Chinese social platform WeChat Moments

ABSTRACT

This paper explores photos and texts posted by tourists on the Chinese social media networking site WeChat Moments, which is an important complementary data source when examining the representation of the destination image. The research applies Aggregated Maps and Social Semantic Networks to analyze the graphic and textual image of the tourist destination Zhangjiajie on WeChat Moments, as well as the relationship between the two forms. The findings are: (1) photos construct an image of the destination as a mountain area with natural scenery and artificial landscapes; (2) texts reflected a multilayer image with a core and subset; (3) photos and texts echoed each other and their differences contributed to an interactive interpretation. The similarities and differences between photos and texts stimulate a discussion about the internal logic of representation.     

概念图知识表示方法及其应用

知识表示是人工智能领域研究的中心课题之一,概念结构是一种新的、有效的知识表示方法,概念图是支持概念结构思想的一个具体的语义模型。本文论述了概念结构与概念图的关系,概念图的表示方法和特点,最后阐述了概念图在中文信息处理中的应用。     

'On the side of the Angels': community involvement in the governance of neighbourhood renewal

Community involvement in regeneration is far from easy, and is difficult to define. The New Deal for Communities programme has directly involved residents in the governance of neighbourhood renewal with some success. However, community capacity has proved to be limited, adequate representation is difficult to achieve and there has been friction with local government. Community empowerment has to be enabled and supported by getting the structures and processes right, and supporting community representatives.     

THE TWO FUNDAMENTAL THEOREMS OF ASSET PRICING FOR A CLASS OF CONTINUOUS‐TIME FINANCIAL MARKETS

The paper is concerned with the first and the second fundamental theorems of asset pricing in the case of nonexploding financial markets, in which the excess‐returns from risky securities represent continuous semimartingales with absolutely continuous predictable characteristics. For such markets, the notions of “arbitrage” and “completeness” are characterized as properties of the distribution law of the excess‐returns. It is shown that any form of arbitrage is tantamount to guaranteed arbitrage, which leads to a somewhat stronger version of the first fundamental theorem. New proofs of the first and the second fundamental theorems, which rely exclusively on methods from stochastic analysis, are established.