Learning and development opportunities as a tool for the retention of volunteers: a motivational perspective

The growing reliance on volunteers in Australia has heightened the need for non‐profit organisations to retain these valuable resources. However, the current literature on volunteer retention is limited. One potential way volunteers can be retained is by providing learning and development opportunities (LDOs). This study investigates the relationship between volunteer perceptions of LDOs, their motivations for volunteering, and retention. Analyses revealed significant main effects for LDOs and volunteer motivations on retention and several interactive effects demonstrating that LDOs can have differential effects on retention depending on the reasons for volunteering.     

画出来的生命——谈动漫造型原创设计与开发

本文通过对中外动漫造型原创设计与开发的现状进行分析,并进一步重点探讨中国动漫产业中动漫造型设计与开发应注意的问题。     

关于民办高校大学生思政课可接受度的调查与研究

如何提高民办高校大学生思政课的可接受度,是高校思政课长期关注的重大课题。本文就当前民办高校大学生思政课教学接受状况进行了调研与系统分析,并在此基础上提出了提高民办高校思政课可接受度的对策。     

车架厂贮气筒焊装线研究与改善

运用工作研究的操作分析和动作分析方法,对某汽车焊装线流程和节拍进行了详细的测定与分析,对有关不规则操作和不合理动作等问题提出了改进优化方案,实践证明改进效果明显。     

用几何画板软件探讨二元函数的条件极值问题

利用几何画板软件先绘制出约束条件的图象,再把图象上的动点代入二元函数,观测函数性态,寻求极值。     

Robust min–max portfolio strategies for rival forecast and risk scenarios

We consider an extension of the Markowitz mean–variance optimization framework to multiple return and risk scenarios. It is well known that asset return forecasts and risk estimates are inherently inaccurate. The method proposed provides a means for considering rival representations of the future. The optimal portfolio is computed, simultaneously with the worst case, to take account of all rival scenarios. This is a min-max strategy which is essentially equivalent to a robust pooling of the scenarios. Robustness is ensured by the noninferiority of min–max. For example, a basic worst-case optimal return is guaranteed in view of multiple return scenarios. If robustness happens to have too high a cost, guided by the min–max pooling, it is also possible to explore other pooling alternatives. A min–max algorithm is used to solve the problem and illustrate the robust character of min–max with return and risk scenarios. We study the properties of the min–max risk–return frontier and compare with the potentially suboptimal worst-case where the investment strategy and the worst case are computed separately.     

On the interaction between public and private capital in economic growth

This paper introduces two forms of interaction between private and public capital in an endogenous growth model in which productive government expenditure takes the form of a stock-variable and public capital is used in part as an input in the production of final output and in part to increase its own supply. While the first form of interaction involves the stocks of the two capital-goods and takes place within the final output sector through the specification of the aggregate production function (Cobb?CDouglas vs. CES), the second one concerns the rates of investment in the two kinds of capital. The share of productive public expenditure devoted to output production can be either exogenous or endogenous. Our results suggest that when this share is exogenous, along the balanced growth path the optimal growth rate of the economy is a positive function of the degree of complementarity between the two forms of investment. When the share of productive public expenditure devoted to output production is endogenous, the public capital share in GDP becomes, along with the model??s preference parameters, an important determinant of the economy??s long run growth. We also find that the optimal growth rate is an increasing function of the elasticity of substitution between public and private capital inputs in goods production, and is independent of the complementarity/substitutability between the two forms of investment.     

钢铁业中逆向供应链管理的应用与研究

结合钢铁行业的管理信息化现状，提出了逆向供应链管理的思想，进而分析了在钢铁业进行逆向供应链管理的必要性与可行性。并在此基础之上，构建出了逆向供应链管理系统的总体框架，以及系统的各主要功能模块，同时对系统开发的关键技术也作了详细的介绍。     

文化产业:全球化背景及其对策

全球化的发展形势逼人,我们必须把握好机遇,做好准备,积极推进文化产业的国际化进程。从当前来看,首先要面对的是全球经济一体化以后,如何调整文化心态,文化产业如何迎接机遇与挑战。概括的说,这包括三个方面:第一,树立竞争意识和危机意识;第二,处理好民族特色与文化产业国际化的关系,发展壮大自己;第三,在文化产业的国际化进程中必须注意中国文化安全。     

韩国的农业产业及农业生物技术产业

20世纪70-80年代,韩国农业产业增长较快.从90年代开始,随着工业化进程的加快,农业在国民经济中所占比例不断下降.进入21世纪以后,韩国在形成农业规模经济、农业生产力方式和产品结构调整及科技扶农等方面取得了一些成效.虽然,韩国在改善农业基础设施,推动农村电气化、信息化以及发展农村工业等方面取得不少成绩,但由于农业生产规模和品种的局限,以及农业技术和农业生物技术产业发展滞后的影响,生产力水平提高缓慢.总的看,韩国现代农业技术和农业生物技术产业尚处于初级发展阶段,农业产业依然是韩国发展的软肋,并且渐渐成了经济改革的拖累.