Poverty effects of food price escalation: The importance of substitution effects in Mexican households

Recent food price increases reportedly caused significant numbers of households to fall into poverty, particularly in the developing world. Most research into the welfare effects of these food price changes assumes constant demand or approximates second order substitution effects. Poverty forecasts with these assumptions may overestimate or underestimate the effect of food price increases in a nation where most households consume diverse food baskets. We account for full substitution by calculating a theoretically consistent food demand system, accounting for household responses to food price changes by decreasing some food purchases and increasing other food purchases. We use Mexican data to confirm the mitigation of adverse welfare effects from food price increases after accounting for country-specific dietary preferences in modeling demand. In comparison to previous literature, our welfare measures predict theoretically consistent numbers of Mexican households entering poverty due to recent food price changes.     

欧债危机发展趋势及其对油气行业的影响

欧债是国际金融危机引发的后遗症,具有长期性和反复性的特点,是短期内难以根本解决的制度性危机。债务危机、银行危机、政治危机相互影响,问题解决面临的变数越来越多,使欧洲经济陷入低迷,严重影响了世界经济的复苏进程。债务危机的主要影响:一是直接导致欧元区石油需求加速下降,但总体上对新兴经济体需求影响有限;二是使国际油价上攻动力减弱。尽管受到债务危机的影响,但全球油气投资依旧旺盛,投资重心向发展中国家转移。欧债危机对中国石油市场影响有限,但对下游市场的影响不可小觑。     

欧债危机加速我国玩具出口转型升级

在欧债危机的冲击下,我国玩具业正在通过扩展产业触角、增加文化含量、开辟国内市场等转型升级手段自救,产业面貌为之一新。这是记者15日在广州举行的“玩具行业形势新闻通报会”上了解到的。据统计,2011年中国玩具出口247．838亿美元,同比增长17．57％。不过,广东省玩具协会常务副会长李卓明分析,去年中国玩具出口金额增长的原因主要是产品价格上升,实际上,相当部分产品的出口数量在下滑。     

青岛市明星企业占用拖欠中小企业货款问题的分析

青岛市是一个有众多的明星企业的城市,明星企业在青岛经济发展中起着至关重要的作用,而青岛市的明星企业在与中小企业进行业务交往中,或多或少地存在着占用、拖欠中小企业贷款的问题,这一问题地解决与否,关系着青岛市未来经济能否健康稳定地发展。     

Impact of loss aversion on the newsvendor game with product substitution

This paper studies a newsvendor game in which two substitutable products are sold by two different retailers (newsvendors) with loss-averse preferences. Each loss-averse retailer facing stochastic customer demand and deterministic substitution rate will make an order quantity decision to maximize his expected utility. Since product substitution causes two retailers to make decisions in a competitive environment, game theory is used to find the retailers' optimal order quantities. It is shown that under certain conditions, there exists a unique Nash equilibrium in the newsvendor game. Under a symmetry assumption, each retailer's equilibrium order quantity is decreasing in the loss aversion coefficient and increasing in the substitution rate. Further, if the effect of loss aversion on the order quantity is strong enough to dominate the effect of competition, the total inventory level of a decentralized supply chain will be lower than that of a centralized supply chain. Numerical experiments are conducted to illustrate our results.     

The contribution of product quality to competitive advantage: impacts on systematic variance and unexplained variance in returns

In our study, we argue that product quality may enhance competitive advantage, leading to increased returns but a reduction in variance in returns. More specifically, based on our analyses of strategy‐related theories, we propose a model in which a positive relationship is predicted between relative product quality and relative market share and between relative product quality and returns. An inverse association is predicted between quality and both systematic variance and unexplained variance in returns. Finally, relative product quality is expected to indirectly lower the variance in returns but enhance returns through the link between product quality, market share, and direct costs. Our findings are generally supportive of the model’s stipulations. Copyright © 1999 John Wiley & Sons, Ltd.     

砌体常见裂缝的分析与预防

本文详细论述了砌体结构裂缝产生的原因,并提出了相应的防治措施.     

International comparisons of common carrier rates and efficiency: The quest for objectivity

There have been few reliable comparisons of different countries' telephone rates, and fewer of the efficiency of their national common carriers. Yet such comparisons are needed if governments and others are to have objective yardsticks by which to judge the carriers' performance. The author reviews several of the more accurate comparative techniques now used in Europe, where the lack of effective control over public sector monopolies is becoming a major political issue in certain countries.     

The long-run effects of copper-loop unbundling and the implications for fiber

Policies mandating unbundling of copper telecommunications networks have now been in place for more than 15 years, and it is thus becoming possible to study their long-run effects. This paper reviews the existing evidence on the effects of copper unbundling, and presents new empirical results based on regression analyses of broadband penetration in OECD countries from 2001 to 2010. The results show that the long-run effect of copper unbundling on household broadband penetration rates is negative, a finding which is consistent with previous research, including with research suggesting that copper unbundling has slowed the deployment of FTTP infrastructures, especially in Europe. Based on an analysis of the similarities and differences between the unbundling of copper networks and fiber networks, the paper concludes that mandated unbundling of fiber networks would likely deter deployment of Next Generation Access networks (NGAs).     

Joint and interactive effects of trust and (inter) dependence on relational behaviors in long-term channel dyads

The authors investigate the effects of trust on the relational behaviors of firms in long-term channel dyads across different interdependence structures. Based on the long-term nature of the empirical setting, trust is posited to exert a positive effect on the emergence of relational behaviors in all interdependence conditions. This positive effect of trust is hypothesized to be stronger in highly and symmetrically interdependent channel dyads than in low-interdependence-type symmetric dyads. In addition, for both relatively more dependent and relatively less dependent members of asymmetric dyads, the effect size of trust is hypothesized to increase as the perceived level of interdependence asymmetry increases. Data collected from automobile dealers in Turkey reveal that trust in the supplier has the strongest positive effect on the relational behaviors of dealers in asymmetric dealer-supplier dyads that perceive themselves relatively less dependent than their suppliers. For relatively more dependent dealers, trust is found to exert a modest positive effect. In symmetrically interdependent dealer-supplier dyads, trust exerts a modest positive effect on dealer relational behaviors in the low mutual dependence condition, and this effect size reduces to the point of nonsignificance in the high mutual dependence condition. Theoretical and managerial implications of these findings are discussed.     

The effects of management policy on the performance of Islamic banks

This study examines the effects of management controlled variables on the performance of Islamic banks. Management controlled variables are related to assets, liabilities and expenses management. This study indicates that three major investment activities are revenue generating activities for Islamic banks, whereas savings and investment deposits are costs to the banks. As expected, total expenses are positively correlated with profitability.The author is Associate Professor of Banking and Finance at the School of Management, The Northern University of Malaysia, Malaysia. He wishes to thank an anonymous referee for providing helpful comments and suggestions.     

如何提高水质监测中常用玻璃量器的准确度

玻璃量器测量结果的准确度很大程度取决于其测量不确定度的大小,本文通过对常用玻璃量器检定结果的测量不确定度进行分析,并对如何提高玻璃量器的测量准确度进行了分析探讨。     

一季度煤炭市场基本情况及二季度发展走势

一季度,在国家继续扩大内需、实施积极的财政政策作用下,全国工业生产增势强劲,主要煤炭消费行业产品产量快速增长,煤炭消费持续增长。全国煤炭供求两旺,煤炭出口大幅度增长,煤炭市场继续保持供求基本平衡、局部偏紧的发展态势。从总体上看,在各方面因素的作用下,二季度煤炭市场将延续一季度走势,继续保持良好的发展态势。     

The importance of a common project management method in the corporate environment

Like so many other major companies in the world today, Ericsson runs most of its product development operations as projects. The increasing complexity of telecommunication solutions often requires that many technologies are brought together in one turnkey project, such as telephone switching, mobile radio networks, DECT radio Access and others. Competence centres within Ericsson, spread out over many countries need to work together in'cross functional' projects.
While the advantage of the project concept is obvious, carrying out projects in which various Ericsson companies participate, in different countries, can prove to be a very complex undertaking. Many such projects are running simultaneously and often compete for resources and priority with ever increasing time constraints. In order to succeed we need a common methodology for managing projects.
This methodology must provide Ericsson with a shared view on how we allocate scarce (human) resources, the roles that need to be played by all those involved in the project and the supporting line functions, the criteria to be used for decisions to be taken inside the project and in relation to other projects, and many more issues that require a common view. A shared view on project management is also a prerequisite for handling conflicts within an organization in which the project, as a working form, is predominant. Various Ericsson companies and units have achieved different degrees of maturity in their management of projects. This combined experience has produced a methodology called 'PROPS' that Ericsson uses today. The widespread use of PROPS has given Ericsson a common terminology and common perspective of projects. This contributes to shorter lead-time, time to market and time to customer. In this article is explained some of the PROPS features and how PROPS is applied.     

The effects of mergers in markets for differentiated products

Several authors have studied conditions in which price-increasing forces associated with mergers in ahomogenous oligopoly might be offset by price-decreasing forces associated with rationalization of production. Analogously, in the case of mergers between producers ofdifferentiated products, economies of scope are a possible price-decreasing force. The interrelationship of demands can be another one. Edgeworth showed the possible strength of this latter force in demonstrating that the imposition of taxes on substitute products can cause the prices of all of them to fall. That paradoxical result is directly relevant since effects of mergers are shown to be equivalent to those of properly chosen taxes. Nevertheless, it is shown that the Edgeworth phenomenon does not carry over to mergers i.e., demand forces on their own are not sufficient for mergers to lead to reductions in all prices — although some price reductions are possible. The paper also develops conditions for all prices to rise after a merger. General conjectural variation models in both price and quantity are considered. Finally, it is shown that mergers cannot increase welfare in linear models with Bertrand or Cournot competition. The implications of the results for merger policy are briefly discussed.     

The effects of integrated manufacturing on job characteristics

From a sample of 203 Spanish plants in all manufacturing sectors empirical results show that integrated manufacturing (IM) has a positive effect on job variety, job autonomy and job interdependence for production workers. It is also found that IM is associated with greater job complexity, this effect being mainly mediated by the three abovementioned job characteristics.     

The influence of network effects on SME performance

The notions that firms are embedded within complex networks, and that managers spend time actively networking, have long been accepted by scholars within the Industrial Marketing and Purchasing (IMP) Group. However, an issue that has not received the same attention is an assessment of how these two facets; network structure and external networking behaviors affect SME performance. In assessing their antecedents, in this research we move beyond the traditional IMP literature, using emotional intelligence and entrepreneurial style to assess CEOs' managerial style. Network structure was assessed by the extent to which structural holes and degrees of centrality were present. Data was collected from 227 CEOs of small Iranian information technology companies. To test our hypotheses, we combined the use of structural equation modeling and social network analysis — a dual methodology that has not been adopted before. The results show that emotional intelligence drives entrepreneurial style, network structure and external networking behavior. SME performance is influenced by both network structure and external networking behavior. The mediating role of network structure is also discussed. Here our results show that entrepreneurial style does not influence external networking behavior. Several managerial implications of these findings are discussed.     

The effects of a free-repair warranty on the discrete-time periodic replacement policy

This paper presents the effects of a free-repair warranty on a periodic replacement policy with a discrete time process. Considering a repairable product that should be operational at the time over an indefinitely long operation cycle n (n=1, 2, …), under the discrete-time periodic replacement policy, a product is preventively replaced at pre-specified operation cycles N, 2N, 3N, … (N=1, 2, …). When the product fails, a minimal repair is performed at the time of failure, and the failure rate is not disturbed by each repair. The cost models from the customers' perspectives are developed for both warranted and non-warranted products. The corresponding optimal replacement period N? is derived such that the long-run expected cost rate is minimized. Under the assumption of the discrete time increasing failure rate, the existence and uniqueness of the optimal replacement period are shown, and the impact of a free-repair warranty on the optimal periodic replacement policies is investigated analytically. The optimal N* for a warranted product should be adjusted toward the end of the warranty period. Finally, numerical examples are demonstrated for the optimal policy illustration and verification. The observations from the numerical results provide valuable information for a buyer (user) to adjust the optimal periodic replacement policy if a product is operating in discrete time under a free-repair warranty.     

The effects of management inertia on the supply chain performance of produce-to-stock firms

This article examines the impact of inertia on the management of the firm's supply chain operations and the effects it can have on a produce-to-stock firm's ability to respond to external market pressure and develop corrective strategies. The research methodology used is based on earlier Catastrophe Modeling that looked at inertia in organizational design, competitive pressure, and competitive response. The model demonstrates how latent variables, such as customer pressure and supply chain inertia can influence a finished goods supply chain management's response under various conditions. The model was tested and validated using questionnaire data gathered from a sample of members of the Council of Logistics Management. The model was used to estimate individual finished goods firm inertia response estimates. We incorporate these estimates in a brief examination of three produce-to-stock firms from the sample to give readers an idea of the usefulness of the approach in examining supply chain inertia.     

The effects of government policies on agricultural input markets

Agricultural policies in most developed countries involve elements of price support. The primary objective appears to be the support of farm incomes, but effects of the policies are more wide ranging than this. The impact of price support on agricultural input markets in the UK is highlighted in this article and it is shown that the main effects of raising farm prices are to increase the wealth of landowners, increase capital intensity and reduce employment and wages of hired labour. These are not generally recognized as primary goals of the CAP. It is suggested that the British government might offset some of these effects through judicious reduction of capital grant rates.