客户信用评级体系的校准度检验研究

利用多种统计量对客户信用评级体系进行校准度检验,以对其准确性做出定量评估。同时,使用这些统计量对由两种不同方法构造的信用评级进行了实证对比检验,结果表明,校准度检验能够对客户信用评级的准确性做出有效评估。     

CROSS‐DOCKING AND ITS IMPLICATIONS IN LOCATION‐DISTRIBUTION SYSTEMS

Cross‐docking replaces traditional warehousing, enabling continuous flow of items without storage. Here we model location‐distribution networks, that include cross‐docking facilities, to obtain the latter's impact on the supply chain. We formulate optimization models to minimize total cost in three multi‐echelon networks, each model generalizing the preceding one. The first includes a single manufacturer, one product type, and multiple customers. Cross‐docks are to be located between origin and destinations. Besides solving optimally, a tool for quantitative analysis of direct‐shipment decisions is developed. The second model considers more than one product: We determine a cost‐effective sequence of items for indirect shipment (via cross‐docks). Finally, in a network with multiple origins, optimal solutions are obtained for 40 medium‐sized and larger examples.     

On Sraffa's Standard commodity: is its price invariant with respect to changes in income distribution?

In his 1960 book, Sraffa suggested using a composite commodity,which he called the ‘Standard commodity’, to solveRicardo's search for an invariable measure of value, i.e., astandard capable of isolating the price movements of any othercommodity induced by changes in income distribution. The absencein Sraffa's book of an explicit proof of the invariance propertyof this standard gave rise to many misunderstandings about itsmeaning and its role as an invariable measure of value. In orderto clear up these questions, Bellino (On Sraffa's Standard commodity,Cambridge Journal of Economics, vol. 28, 121–32, 2004)has proposed a ‘proper’ definition of an ‘invariablemeasure of value’, showing that Sraffa's Standard commoditydoes fulfil the requirements of this definition. He claims thatthe fulfilment of this property (but not the constancy of its‘nominal’ price) qualifies the Standard commodityas an invariable measure of value. In this paper, a proof ofthe invariance of the price of the Standard commodity with respectto changes in income distribution is given, and the equivalenceof this property with Bellino's definition of invariance isshown.     

社会保障制度对财富分配的影响以及在避免贫富差距进一步加大的作用

伴随着经济的增长,贪富差距逐渐加大和财富朝少数人集中是当今社会中出现的一个现象。在本文中,我们基于财富分布是随机性的这个一般性假设,探讨了在经济增长过程中财富分布的最可几状态。通过对财富在随机状态下的分布函数的建立,证明了如果只考虑人均收入时,财富会以负指数函数的方式作为财富分布的最可几态。并且,随着人均财富的增加,贪富差距不仅不能减小,反而还有扩大的趋势,财富会朝着少数人更集中。如果不仅考虑人均收入（算术平均）,还同时考虑几何平均的话。随着经济增长的同时,由于几何平均是不能容许零或负的财富值存在,这正是社会保障系统所起到一个作用。在这种情况下,财富的分布会呈Gamma分布。在Gamma分布中,财富将集中在大多数人中,财富多或财富少的人数在社会总人数中所占的密度较小。     

长白山区作物气候生产力及其地理分布的研究

本文建立了长白山区玉米、水稻和大豆的气候可能产量模式和地理分布模型,计算了各地的气候生产潜力,并进行了地形影响订正。结果表明,长白山区主要农作物气候生产力的地理分布特征主要取决于地势、地形和经度,气候生产力随着海拔的升高按照三次抛物线函数递减,随着经度的升高按照线性函数递减。主要山体的南、西南坡气候生产力较高,北、东北坡气候生产力较低。该项研究为长白山区农业立体开发提供了综合气候生态依据。     

树立科技矿政理念改革矿政管理制度——以资源储量消耗计征矿产资源税费

科技矿政理念的基本含义就是努力提高矿政管理的科技含量,遵循地质矿产规律,依靠科技进步显著提升我国矿产资源保护与利用水平.推动科技矿政管理进程,首先要从资源储量管理方面夯实基础,建立健全资源储量实物账户与价值账户.进而改革矿产资源权益分配方式,以资源储量消耗计征矿产资源税费.相应改革矿业权评估制度.     

What kind of marketing distribution mix can maximize revenues: The wholesaler travel agencies' perspective?

This study attempts to identify the variety of marketing channel efficiencies for marketing activities and sets up an optimal marketing distribution mix when using different distribution channels for wholesaler travel agencies. This research examines 12 large-scale travel agencies in Taiwan and offers seven direct and indirect distribution channels in order to establish an optimal marketing distribution mix and identifies the different forms of distribution involved. We also implement the analytic hierarchy process (AHP) to prioritize the seven main marketing distribution channels of travel agency: websites, cable TV, radios, professional magazines, retailer travel agencies, strategic alliances, and newspapers. Five criteria are categorized as a distribution channel selection: overall cost of the channel, target audience respondent rate, impression rates, transactional capabilities, and gross profit of the channel. The results show that Taiwan's wholesaler travel agencies adopt the retailer travel agency as their highest priority of channel selection, while travel agency websites hold it as their second priority. Transactional capabilities, gross profit of the channel, and overall cost of the channel are the top three favorable choices among the five criteria considered. This study proposes an innovative hierarchy model of marketing distribution mix to a wholesaler travel agency practitioner when making decisions in order to effectively exploit the different distribution mix, to maximize performances and revenues, and to overcome the traditional experience based on the shortcomings of the selection.     

“农超对接”模式下农户心理契约的构成及中介效应分析

组织公民行为是测量组织合作过程中绩效的重要指标之一,而影响其组织公民行为的众多因素中,又以组织公平最为重要。本文研究的对象是"农超对接"过程中农户所表现的组织公民行为,着眼于农户心理契约的视角,通过实证分析探讨超市组织公平与农户组织公民行为之间的关系。研究结果发现,超市组织公平是影响农户组织公民行为表现的重要因素;而农户的关系型心理契约是超市组织公平对农户组织公民行为影响的中介变量。最后,针对研究结果,提出研究结论以及在"农超对接"过程中的政策建议。     

大城市保障性住房空间布局的社会问题与治理途径

本文研究了北京、上海、南京等五大城市保障性住房空间布局特征,指出大城市保障性住房普遍存在空间选址偏僻、大规模集中建设、配套设施不完善等现实问题.在分析以上问题形成原因的基础上,认为大城市保障性住房集中建设在偏远郊区可能导致社会隔离与排斥加剧、出现城市贫民区与贫困文化、贫困的代际延续与社会风险加剧等一系列社会问题.因此建...     

Building up a B2B e-commerce strategic alliance model under an uncertain environment for Taiwan's travel agencies

E-travel agencies adopt B2B strategic alliances in order to strengthen their competitive advantages in the e-commerce travel market and because they are an effective tool to gain wider sustainable gains. External environmental and internal organizational factors impacting the success of strategic alliances model are themselves a crucial issue. This study uses multiple methods to collect data from multiple sources and uses qualitative and quantitative surveys. A two-stage research design is adopted to explore the present strategic alliances between Taiwan's wholesaler e-travel agencies and retailer sub-agencies. The results provide an in-depth understanding into the B2B e-commerce strategic alliance model. According to this research, Taiwanese e-travel agencies consider three external environment uncertainties, five internal organization motivations, five partner selection criteria, and two performance measurements of alliance strategies. Finally, the paper proposes an optimal B2B e-commerce strategic alliance model that matches the essential development needs of B2B e-commerce and overcomes the environmental uncertainties.