关于真实票据融资与宏观经济运行顺循环关系的数学模型分析

票据市场理论认为,建立在真实交易基础上的票据,由于具有自偿性特点,其贴现融资与宏观经济运行周期之间具有所谓的顺循环关系,这种关系因其可以加剧经济周期效应而受到理论界的重视。近几年来我国票据市场快速发展,一方面对货币市场的发展起到了积极的促进作用,另一方面也因真实票据占比过高、真实票据融资累计发生额激增而面临顺循环问题,尽管其中的负面影响目前还没有非常明显的显现,但从长远看,对顺循环关系的分析研究是十分必要的。     

求半正定Hermitian矩阵特征向量的改进乘幂法

经典乘幂法结合压缩法是计算半正定Hermitian矩阵最大前n个特征值对应特征向量的重要方法,但其固定的迭代次数使得待分解矩阵的随机变化和初始向量的不同选择导致计算精度波动较大,同时,较大特征值对应特征向量的计算误差也会影响较小特征值对应特征向量的计算。为克服这些缺点,提出了一种将前后两次迭代所求向量的距离作为迭代终止条件的改进乘幂法,并证明了它在有误差传播时的收敛性。理论计算结果表明,对4阶半正定Hermitian随机矩阵,在相同计算精度前提下,所提方法比经典方法可至少降低一半计算复杂度。     

微博语境下高校正能量场域构建

微博这一新兴传播媒体已在大学生群体中被广泛地使用,大学生在使用微博过程中传递着能量,这种能量既有正能量也有负能量。大学生使用的微博中,存在正面信息也存在负面信息,存在理性的情绪表达也存在非理性的情绪宣泄,存在正向的积极引导也存在负向的蓄意鼓动,存在正能量的主动吸收也存在负能量的被动灌输,形成微博传递能量的冲突与消解。作为大学生教育主体的高校需以社会主义核心价值为导向,建立高校官方微博体系,培养优秀微博意见领袖,健全微博良性发展管理机制,传递微博正能量,促进微博语境下高校正能量场域的形成。     

The double-edged sword: The positive and negative effects of switching costs on customer exit and revenge

What happens when customers have to deal with switching costs after a service failure and a poor recovery? This study seeks to address this question by proposing and testing an integrative model that incorporates customers' negative emotions as mediators between switching costs and behavioral outcomes (i.e., loyalty and revenge). The model distinguishes positive from negative switching costs, and inward from outward negative emotions. Analysis of survey data from 280 real customers who actually experienced a service failure and poor recovery with a major telecommunications firm reveals that customers react to switching costs strongly, emotionally, and sub-optimally. In contrast to most findings in the service literature, the results indicate that negative switching costs generate both exit and desire for revenge. Paradoxically, positive switching costs generate both loyalty and an even higher level of desire for revenge. These findings have important implications for the service industry.     

Asymmetric positive feedback trading and stock pricing in China

Defining asymmetry of feedback trading (AFC) as the difference between buying-winners and selling-losers intensities, the paper investigates if AFC impacts stock pricing. We show that buying stocks with low AFC and selling stocks with high AFC makes significant positive returns after controlling traditional pricing factors. The return mainly comes from the long leg and cannot be simply attributed to either mispricing, liquidity, or risk premium. Further study shows that the negative impact of AFC on future stock return is reinforced with an increase in past returns, maximum daily return, relative valuation level, asset growth rate, or operating profit rate. As AFC represents retail trading intensity, the results imply that the inactiveness of retail investors may make price relative underreaction to good news and thus lead to positive expected stock return.     

Retaining volunteers for the cause: Hope and pride associated with cause-related charity events in cancer control

Special charity events are an important source of revenue for non-profit organisations in cancer control yet volunteering is declining and turnover is high. Experiences at cause-related events may influence retention, particularly emotions connected to the cause and ceremonies which honour cancer survivors and remember loved ones. We explore the degree to which emotions associated with cause-related volunteering and collective action in the literature are felt in response to Relay For Life and what emotions predict three indicators of retention: intention to return for future events, satisfaction with volunteering, and organisational commitment. Volunteers (n = 410) completed a cross-sectional survey at Relay For Life events in Queensland, Australia. Multiple regression analyses examined whether emotions associated with events predicted each indicator of retention, adjusting for number of years spent volunteering for events. Sixty-two percent reported an intention to return the following year. The most commonly reported event-related emotions were hope, pride, and empathy (62–69%). Intention to return, satisfaction, and commitment were each significantly predicted by hope and pride. The findings suggest special charity events in cancer control could retain volunteers by fostering pride and hope (e.g., for a cancer free future); however, future prospective research which examines the mechanisms of these relationships is warranted.     

情绪与亲社会行为关系的研究综述

本文首先从概念和理论的角度解释了亲社会和情绪;其次,针对当前的研究现状将情绪分为积极情绪和消极情绪来阐述情绪对亲社会行为的影响;最后,针对情绪与亲社会行为关系的研究现状进行了一定的评述和展望。     

Symmetric Positive Equilibrium Problem: A Framework for Rationalizing Economic Behavior with Limited Information

The PMP methodology is extended to deal with many economic units, self-selection arising from heterogeneous economic behavior, and multiple limiting inputs. The novel structure for the analysis of this type of problems acquires the name "symmetric positive equilibrium problem." This methodology is articulated in three phases that parallel those one of positive mathematical programming. The recovery of a cost function that calibrates the base-year decisions of each economic unit is realized within a maximum entropy framework. The methodology is illustrated by the analysis of a sample of Italian farms that operate under the complex policy mandates of the European Union.     

What Can Acreage Allocations Say about Crop Supply Elasticities? A Convex Programming Approach to Supply Response Disaggregation

This article has two goals. The first is to extend previous results regarding calibration of land‐constrained programming models of agricultural supply against supply elasticities to the general case of multiple constraints. The second goal is to demonstrate how the resulting calibration conditions can be used as a source of identification to disaggregate crop supply elasticities down to the level at which static information on acreage allocations is available. We propose an information‐based disaggregation algorithm to systematically generate regionalised elasticities from a single prior, and provide an empirical illustration.     

Differences in Cross-Cultural Negotiation Behavior Between Manufacturers and Service-Oriented Firms

ABSTRACT

In this age or the global economy, Cross-Cultural negotiations is becoming an ever increasing important part of the management and marketing process for nearly every firm. In this study, we compare the cross-cultural negotiations behavior and differences in the perceived processes between manufacturers and service-oriented firms. We report significant differences between the two groups and provide analysis.