风险投资对创业板上市公司IPO时的盈余管理的影响

本文以收集的2010年在创业板首发上市的89家公司在IPO前后连续5年的数据为样本,利用修正的Jones模型分析了我国创业板上市公司的IPO盈余管理的情况,强调上市公司IPO时有风险投资背景对盈余管理行为的影响。研究结果表明：我国创业板上市公司在IPO时存在盈余管理行为。风险投资背景对创业板上市公司IPO时的盈余管理行为没有显著的影响。但是,风险投资和行业的交互项对创业板上市公司IPO时的盈余管理行为有显著的影响。     

The Relationship Between Father Involvement in Family Leisure and Family Functioning: The Importance of Daily Family Leisure

The purpose of this study was to examine the relationship between fathers’ involvement in family leisure and aspects of family functioning from both a father and young adolescent perspective. The sample consisted of fathers and their adolescent child from 647 families throughout the United States. Results from both the father and youth perspective indicated significant relationships between father involvement in both core and balance family leisure with family cohesion, family adaptability, and overall family functioning. Satisfaction with core family leisure that included the father's involvement was the single strongest predictor of all aspects of family functioning from both perspectives highlighting the importance of regularly occurring home-based family activities such as eating dinner together, participating in hobbies and informal sports or yard activities together, watching television together, or playing board games and video games together. Discussion and implications for fathers, families, practitioners, and future research are presented.     

Towards an ecological technology for global growth in a North-South trade model

In a world of rapid and cheap communication, where countries are not isolated, ideas and information spread quickly across international borders. Technological progress, leading to more efficient productive processes, in terms of the required amount of natural resources, seems to be the key to overcoming the conflict between environmental concerns and economic growth. This paper investigates the relationship between natural resources and sustainable economic growth in a North-South trade model. We assume that a process of capital transfer from North to South is performed in two different scenarios depending on the effect of this transfer upon the Southern economy. Within a game theory framework, we characterize the optimal paths of global economic growth which respects the sustainable use of natural resources.     

Detecting gender item bias and differential manifest response behavior: A Rasch-based solution

Although gender is a salient variable in consumer research, researchers largely overlook whether, and how, it influences consumer response to indicators measuring latent variables. The authors therefore extend the framework of measurement equivalence assessment to the largely overlooked issue of differential item response behavior between men and women. This paper demonstrates the efficacy of using item response theory to investigate the presence of gender item bias. This methodological approach affords researchers the means of objectively disentangling actual gender differences and gender bias. Ignoring the possibility of gender item bias has the potential to bias means and thereby compromise any substantive gender-based mean comparisons. The authors conclude with solutions to address gender item bias both pre and post survey construction.     

代际传承背景下家族企业继任二代创新投入水平研究——基于差序格局视角

利用2004—2018年1074个家族企业年度样本的非平衡面板数据,基于"本土情景"的差序格局视角,实证考察继任二代履新后创新投入水平。研究结果表明,限定其他条件,继任二代在以创立一代为中心的差序格局中关系越强,履新后创新投入水平越低。进一步引入家族企业异质性发现,创立一代"离而不休"会强化差序格局与创新投入之间负相关关系,即对创新水平产生抑制作用;而政企关联和非家族成员高管介入,均会弱化差序格局与创新投入之间负相关关系,即对创新水平产生促进作用。     

The differential and synergistic effects of market orientation and entrepreneurial orientation on hotel ambidexterity

Innovation ambidexterity has surprisingly received limited attention in hospitality research. Using data from 101 Jordanian hotels analyzed with PLS structural equation modeling, this paper reports a double differential effect of two strategic orientations, market orientation (MO) and entrepreneurial orientation (EO), on hotel ambidexterity. On the one hand, EO (MO) has a stronger impact on exploratory (exploitative) than on exploitative (exploratory) innovation. On the other hand, EO has a stronger impact than MO on both innovation forms. Furthermore, the synergy between EO and MO has a positive impact on exploitative and exploratory innovation, both of which in turn enhance hotel performance.     

Modeling complex systems

Empirical observations suggest that linear dynamics are not an adequate representation of ecological systems and that a realistic representation would require adoption of complex nonlinear dynamical systems with characteristics encountered in complex adaptive systems (CAS). Adequate modeling should include and combine elements, such as strategic interactions among economic agents, nonconvexities induced by nonlinear feedbacks, separate spatial and temporal scales and modeling of spatiotemporal dynamics, and allowance of alternative time scales. Ignoring these characteristics might obscure very important features that we observe in reality, such as bifurcations and irreversibilities or hysteresis. As a consequence, the design of policies that do not take CAS characteristics into account might lead to erroneous results and undesirable states of managed economic–ecological systems.     

德国物流教学的经验与启示

首先详细分析了德国典型大学的物流专业课程体系和物流教育模式,其次以德国开展项目教学方法的经验为基础,探讨了项目教学方法的内容、教学步骤以及实施项目教学方法的条件,最后从制定教学大纲、构建完善的课程体系、改进教学方法等几个方面探讨了我国物流教学的经验启示。     

About handy, handmade and handsome models

Statistical inference deals with natural variation between units and with uncertainty due to sampling, measurement error and random assignment to treatments. Almost always it does so within one model, assumed fixed and valid. Here, however, variation of conclusions due to variation in model choice will be discussed. Heuristics to find appropriate models are seldom taught, and model fit tests and model fit diagnostics are far from optimal. The use of more than one model for the same data is illustrated by examples from Item Response Theory.     

目标客户企业规模与差异化银行资本结构的关系研究

本文从企业引入银行外部监管的角度,构造了一个将融资企业规模与银行资本结构融合起来的模型,用以分析银行目标客户企业的规模是否会影响企业的资本结构水平的确定。研究结论表明,大的银行可能更趋向于通过目标客户企业规模的筛选,来降低自己的监督成本,而中小银行可能更趋向于通过资本金比率的方式吸引优质客户,以较高的收益水平来弥补监督成本的提高,这从一定程度上给出了目标客户企业规模不同的银行在资本结构安排上差异化的原因。