海内外各界对新四军抗战的经济支援

新四军之所以能在艰苦的环境里不断发展起来,并且没有发生八路军1941~1942年间出现的严重困难局面,除了新四军所在的华中地区比较富庶外,还得力于海内外各界对新四军的巨大经济支援。海内外各界的经济支援,保障了新四军最迫切的医药、衣被、器械等方面的急需,为新四军坚持华中敌后抗战提供了强有力的物质支撑。     

A discussion of the market and policy failures associated with the adoption of herbicide-tolerant crops

Weed control in the U.S. Midwest has become increasingly herbicide-centric due to the adoption of herbicide-tolerant (HT) crops in the 1990s. That integrated weed management (IWM) practices, including ecological and mechanical controls, are scarcely used is concerning. IWM would be a more sustainable form of farming for two reasons. First, it would reduce the negative health and environmental externalities associated with herbicide use. Second, it would reduce the selection pressure on weed populations and the development of weed resistance to some herbicides, thereby reducing the uncertainty of the long-term effectiveness of herbicidal weed control. In this context, we develop an economic framework to clarify the interplay among the different market failures that either contribute to the herbicidal ‘lock-in’ or make it problematic. We then analyse the evidence for and perceptions of these market failures based on twenty-four semi-structured interviews with farmers and experts conducted in 2017, as well as on discussions in the academic literature. To this end, we put into perspective the possible self-reinforcing effects in the adoption path of HT crops, such as increasing farm size, changes in farm equipment, increasing incentives for simplified crop rotations, and the loss of practical knowledge of IWM practices.     

热负荷偏差对供暖系统影响的分析

分析了设计热负荷偏大对室内供暖系统的影响,得出设计热负荷偏大对单管系统克服垂直热力失调是有利的结论;经分析设计热负荷偏大对管网及热源的影响,得出仅靠加大室内设计热负荷达不到良好供暖的结果,相反,加大室内设计热负荷会导致个别用户供暖效果更差。     

Falling walls and lifting curtains: analysis of border effects in transition countries

Since McCallum's (1995 McCallum, J. 1995. National borders matter: Canada-US regional trade patterns. American Economic Review, 85(3): 615–23. [Web of Science ®] , [Google Scholar]) finding of surprisingly high border effects on trade between the US and Canada, there have been a number of studies on other parts of the world, and improvements made to the gravity model to measure this effect accurately. This paper suggests some other modifications to the model, and applies it to a region of the world that presents a distinctly interesting case. Changes in border effects of formerly socialist countries in Central and East Europe, and countries in the former Soviet Union are analyzed during 1976–2002 at country and sectoral levels, and also with respect to blocs of countries. A discussion on cross-country variations in border effects follows the computations.     

On market forces and adjustments: acknowledging consumer creativity through the aesthetics of ‘debadging’

Abstract

This paper explores the social dynamics by means of which market forces are enacted at the level of everyday consumption. In particular, it draws on Holt's (2002 Holt, D.B. 2002. Why do brands cause trouble? A dialectical theory of consumer culture and branding. Journal of Consumer Research, 29: 70–90. [Crossref], [Web of Science ®] , [Google Scholar]) notion that as ‘unruly bricoleurs’, consumers kick-start processes of market adjustment and innovation through improvising ways to negotiate the demands of daily life. In this way, consumers can become active players in realising new possibilities for identity construction and empowerment that involve the creative re-appropriation of marketer-based meaning. To investigate those issues, we turn to a virtual community in the empirical setting of car customisation. Over an eight-month period, an internet-based methodology generated textual observations of online posting activity on five internet newsgroups attracting those interested in the particular pursuit of car modification. Participants used those web-forums to share information, passions, and enthusiasms. Analysis shows that grounded aesthetics function as vehicles for creativity and the reworking of dominant market logics (Vargo & Lusch, 2004 Vargo, S.L. and Lusch, R.F. 2004. Evolving to a new dominant logic for marketing. Journal of Marketing, 68: 1–18. [Crossref], [Web of Science ®] , [Google Scholar]). We conclude that online discussion threads offer valuable access to the emergent interplay of discursive resources in circulation among virtual communities and that this has implications for the conduct of environmental scanning. The paper illustrates how the discursive resource-base is nurtured, sustained, and transformed through various interpellations, including performing claims to prestige and self-defining distinctions, as well as constructing narratives of personal history and social dynamics.     

A tactical retreat? Conceptualising the dynamics of European grocery retail divestment from East Asia

The internationalisation of the firm is a highly dynamic process, in which periods of investment and expansion intermingle with periods of divestment and retrenchment. Academic research to date has focused on identifying the reasons for and the processes of divestment. Empirical studies either evidence generic pressures or provide case studies of specific incidents. There few longitudinal studies of international divestment, consequently the dynamic interactions between host market, home market and firm level factors, and how the institutional context changes over time is underplayed. This paper seeks to rectify this gap in our understanding.We explore the rationale and evolving dynamics of European grocery retail divestment in East Asia over a thirty year period. Taking an inductive approach and drawing on analysis of contemporary narratives drawn from company documentation, trade journals, newsfeeds and market reports, three phases can be identified characterised by specific factors and combinations of factors which intersect to provide the key pressures and stimuli for divestment. We conclude that at different time periods, different internal and external contextual influences manifest themselves through different priorities within the firm’s strategy – marked by a switch from local (host) market, to regional, to global firm-centric considerations. Longitudinal analyses allow a greater recognition of this dynamic interplay of factors, and the changes in these relationships, and provides a more nuanced understanding of the international divestment process.     

变革前消极非正式信息对员工的影响机制研究

组织变革前会有相关的非正式信息,这些信息影响员工对变革的认识。文章探索变革前消极非正式信息量对员工变革抵制意愿的影响,以及员工变革抵制意愿随时间推移的变化,信息频率与尽责性对员工变革抵制意愿变化的调节作用。基于159位员工调查数据的多层次线性增长模型分析表明：消极非正式信息量显著增加员工的变革抵制意愿,但这种抵制意愿随时间推移而显著衰减;消极非正式信息频率与尽责性对员工变革抵制意愿随时间衰减有三维调节作用：在低信息频率下,低尽责性员工的变革抵制意愿随时间衰减更快。研究结果对组织变革有一定理论和实践意义。     

Does Greater Amount of Information Always Bolster Attitudinal Resistance?

Previous research suggests that attitudinal resistance to information that challenges a prior evaluation increases with the amount of information underlying the prior evaluation. We revisit this proposition in a context in which a set of important claims about a target brand are presented either alone—a lower amount of isolated information—or along with other favorable, but less important claims—a higher amount of embedded information. Results from two experiments show that when the challenge occurs immediately after the initial evaluation, a greater amount of embedded initial information does produce greater attitudinal resistance. However, when the challenge occurs after a delay, a lesser amount of isolated information produces greater attitudinal resistance. The findings qualify previous assumptions about the role of prior information in attitudinal resistance, and support a constructive view of judgment revision and attitudinal resistance.     

Salesperson Resistance to Sharing Market Intelligence in Sub-Saharan Africa

This article presents a framework for exploring salesperson(s) resistance to sharing market intelligence in emerging markets in Sub-Saharan Africa. The authors propose that resistance to sharing market intelligence with relevant others, including the firm, coworkers, intermediaries, and sales managers, is a function of various individual, leadership, and organizational (firm) factors. This framework helps researchers understand how and why resistance develops among salespeople. Moreover, implications from these findings are presented to assist practitioners who wish to persuade and encourage African salespeople to share market intelligence for the benefit of their firms.     

浅谈储粮害虫抗性防治

从储粮害虫抗性发展状况、抗性品系形成原因等作为切入点,论述了避免储粮害虫形成抗性或降低抗性进一步增长的一些意见,并列举了部分比较成功的做法.