多道系统中进程同步检测的讨论

多道程序设计中，进程之间出现同步问题可通过信号灯的不同设置来解决，即用P信号灯和V信号灯的对应关系来检测其正确与否。     

工程力学教学与学生能力的培养

根据工程力学课程的特点，从力学的基本概念、教学方法和教学模式上对工程力学的教学体系进行了分析，以充分调动学生的学习积极性，进一步提高学生的逻辑思维能力和综合解决问题能力，增强学生的创新意识和创新能力。     

Global economy gathering strength

Encouraged by a highly expansionary economic policy, the global economy is enjoying a rapid upturn. Utilisation of capacity is high in many sectors, particularly in the growth centres of the USA and East Asia, where China leads the field. With inflationary risks on the increase, most countries are now shifting the focus of economic policy. Fiscal policy in particular can be expected to provide little in the way of further stimulus. In addition, there has been a turnaround in interest rates in many countries. Yet how quickly can the monetary reins be tightened without jeopardising growth or endangering price stability?     

New ways of achieving debt sustainability beyond the enhanced HIPC Initiative

In 1996 the Heavily Indebted Poor Countries (HIPC) Initiative was launched by the Bretton Woods institutions to reduce the external debt burden of low-income countries (LICs) to sustainable levels in a reasonably short period of time because debt constitutes an obstacle to sustainable economic growth and poverty reduction. In some HIPCs, however, debt sustainability has been in danger despite debt relief under the HIPC Initiative. Debt relief is a necessary but not a sufficient condition for development. It can do no more than play a catalytic role. The question, then, is how to achieve debt sustainability beyond the HIPC Initiative.     

Building Brands through Brand Alliances: Does a Second Ally Help?

Several papers have been published demonstrating the positive effects a single, reputable ally has on evaluations of a focal brand. Interestingly, little research has been published examining the effects of multiple brand allies. We examine the effect of an alliance with two, one, or zero well-known brand allies on evaluations of a previously unknown focal brand. The presence of a single brand ally significantly increased perceived quality and hedonic and utilitarian attitudes. While multiple alliances improved focal brand evaluations relative to the no ally condition, the second ally did not increase evaluations relative to the single ally condition.     

QUADRATIC TERM STRUCTURE MODELS FOR RISK-FREE AND DEFAULTABLE RATES

In this paper, quadratic term structure models (QTSMs) are analyzed and characterized in a general Markovian setting. The primary motivation for this work is to find a useful extension of the traditional QTSM, which is based on an Ornstein–Uhlenbeck (OU) state process, while maintaining the analytical tractability of the model. To accomplish this, the class of quadratic processes, consisting of those Markov state processes that yield QTSM, is introduced. The main result states that OU processes are the only conservative quadratic processes. In general, however, a quadratic potential can be added to allow QTSMs to model default risk. It is further shown that the exponent functions that are inherent in the definition of the quadratic property can be determined by a system of Riccati equations with a unique admissible parameter set. The implications of these results for modeling the term structure of risk-free and defaultable rates are discussed.     

论我国物流托盘标准的选择--基于商品出口市场角度

托盘（pallet）是为了便于货物装卸、运输、保管和配送等而使用的、由可以承载若干数量物品的负荷面和叉车插口构成的装卸用垫板。它起始于20世纪30年代的太平洋战争中，当时美国军队首次使用托盘来改善货物搬运效率，保证后勤物资供应。其后，托盘在世界各国得到了广泛应用，被认为是20世纪物流产业中两大关键性创新之一。目前，美国有80％的商品由托盘运载，欧洲每年有2．8亿个托盘在企业间循环。     

循环经济的投入产出分析

本文运用投入产出理论对循环经济进行了量化分析，首先，在模型中将循环经济部门从生产部门和消除污染部门中分离开来，在投入不变的条件下，运用循环经济下的各种经济指标来研究新的投入产出关系。其次，通过比较研究的方法，来分析循环经济对整个国民经济的影响程度及对其效果进行评价。最后本文还探讨了在不引入循环生产部门的情况时循环经济的投入产出关系。