巴塞尔新资本协议与信用风险模型的监管审查研究

巴塞尔新资本协议鼓励银行采用内部评级法评估信用风险以提取资本准备,但内部评级法必须满足监管审查的要求。基于新资本协议的这一要求,从监管机构的角度出发,建立信用风险模型监管审查框架,讨论了银行建立内部信用风险模型时,为确保其合理性需要满足的条件与要求,从而为我国的监管机构提供参考借鉴。     

台湾国际观光饭店网路行销关键影响因素之分析

“我们相信,信息革命与网路空间将会实质性地改变行销的环境,并且在传统价值的过程中,令各厂商的财富重新洗牌”。饭店与台湾观光及商务行为一直都是密不可分的,而在21世纪信息爆炸的时期,饭店应如何顺应网路市场的需求,从中获取潜在顾客,正是现今企业重要的议题;正因为因特网蓬勃发展,网路市场不断成长,产生了许多商业机会与利润,这也是为何现今网路行销成为企业研究重要的课题之一。本研究将以McCarthy以及Philip Kotler所提出的行销组合作为分析架构,并利用网路程序分析法ANP（Analytic Network Process）理论以及专家问卷,分别针对饭店业者、专家学者以及官方代表进行分析,探讨饭店业者经由网路将通过何种因素影响其选择性,并分析其因素比重优先级。经由ANP研究方法不但可清楚地知道其因素权重值,更可作为未来规划饭店网路行销策略时的依据。本研究发现在饭店业者、专家学者与官方代表所注重之因素是有差异的,而在综合三个领域的样本中,构面排序几乎为同等重要、在因素排序相对重要程度中前五名为公共关系——企业形象、人员——专业性、产品——理性型产品、促销——折扣或折让、促销——网路广告。     

No Arbitrage in Discrete Time Under Portfolio Constraints

In frictionless securities markets, the characterization of the no-arbitrage condition by the existence of equivalent martingale measures in discrete time is known as the fundamental theorem of asset pricing. In the presence of convex constraints on the trading strategies, we extend this theorem under a closedness condition and a nondegeneracy assumption. We then provide connections with the superreplication problem solved in Föllmer and Kramkov (1997).     

西藏高原县域尺度农业绿色发展水平综合评价——以白朗县为例

[目的]推进农业绿色发展是实现农业可持续发展的有效途径,为客观了解西藏高原农业绿色发展水平,探讨农业绿色发展的驱动因素,为高原农业绿色发展研究提供参考。[方法]文章以白朗县为典型县域案例,从农业生产、农业资源、农业环境、农业生态和农民生活五方面,选取17个指标系统构建评价体系,采用层次分析法确定评价指标的权重值,基于统计数据、遥感数据和调研数据评价2016—2020年白朗县农业绿色发展水平,并利用两阶段最小二乘法分析影响农业绿色发展水平的驱动因素。[结果]（1）2016—2020年白朗县农业绿色发展水平总体呈现上升趋势,由2016年的0.102 7提高到了2020年的0.233 9,增长约2.28倍。其中,农业生产、农业环境和农民生活水平逐年提升,但农业资源水平2018年后却持续下降。（2）多元回归模型分析驱动因素表明农林水事务性支出与农业绿色发展水平存在显著的负效应（P<0.001）,随着农林水事务性支出的降低,农业绿色发展水平会提高。[结论]白朗县农业绿色发展水平整体呈现良好的发展态势,农业生产和农民生活方面贡献较大,但农业资源方面仍是绿色发展的短板,因此今后白朗县农业绿色发...     

销售循环中会计业务流程再造模型之比较

文章基于案例分析建立了2个销售循环中应收账款管理与账龄分析模型.通过对模型17个不同观察点的对比分析,提炼出模型4个类别的基本适应性特征和6个类别的BPR适应性特征,并对模型的应用进行了分析.     

食品类商品进货量的控制

利用排队论思想,对于保质期较短的商品,给出了一种将商品在系统中的平均逗留时间控制在给定的范围内,对相应的进货量进行调控的一种理论方法。     

乙酸乙酯供需动态与工艺技术进展

本文简述国内外乙酸乙酯供需动态。西欧和东亚供应不足,要从有多余乙酸乙酯供应量的拉丁美洲和日本输入,并需要增加乙酸乙酯产能。文章介绍了乙烯－乙酸乙酯新工艺,并同乙酯－乙醇酯化和乙醛缩合制乙酸酯工艺作比较,阐明新工艺是乙酸乙酯生产中技术先进、经济效益高的生产方法。     

A dynamic mechanism and surplus extraction under ambiguity

We study the question of auction design in an IPV setting characterized by ambiguity. We assume that the preferences of agents exhibit ambiguity aversion; in particular, they are represented by the epsilon-contamination model. We show that a simple variation of a discrete Dutch auction can extract almost all surplus. This contrasts with optimal auctions under IPV without ambiguity as well as with optimal static auctions with ambiguity—in all of these, types other than the lowest participating type obtain a positive surplus. An important point of departure is that the modified Dutch mechanism is dynamic rather than static, establishing that under ambiguity aversion—even when the setting is IPV in all other respects—a dynamic mechanism can have additional bite over its static counterparts. A further general insight is that the standard revelation principle does not automatically extend to environments not characterized by subjective expected utility.     

Knowledge flows and the geography of networks: A strategic model of small world formation

This paper aims to demonstrate that the strategic approach to link formation can generate networks that share some of the main structural properties of most real social networks. For this purpose, we introduce a spatialized variation of the Connections model [Jackson, M.O., Wolinsky, A., 1996. A strategic model of social and economic networks. Journal of Economic Theory 71, 44–74] to describe the strategic formation of links by agents who balance the benefits of forming links resulting from imperfect knowledge flows against their costs, which increase with geographic distance. We show, for intermediate levels of knowledge transferability, clustering occurs in geographical space and a few agents sustain distant connections. Such networks exhibit the small world property (high clustering and short average relational distances). When the costs of link formation are normally distributed across agents, asymmetric degree distributions are also obtained.     

A comparison of citizen and “expert” preferences using an attribute-based approach to choice

This paper explores whether expert judgements can be taken as a proxy for citizen preferences for determining investment strategies for public goods. As an illustration, we focus on the provision of Public Rights Of Way (PROW) by Local Government Authorities in England. These provide rights of passage over property to those other than the owners, and little information is available on the welfare effects of changes in the provision and use of PROW. Given limited funds, reliance on expert judgement could be a cost effective alternative for decision-making compared with stated preference surveys of citizens. Two methods are compared. The Analytic Hierarchy Process (AHP) is used to elicit expert judgement to proxy citizen preferences for different attributes of PROW. The Choice Experiment (CE) technique is then used to derive preferences directly through personal interviews with citizens. Overall it was found that judicious use of AHP by experts can, in this instance, be used to represent citizen views. However, this result may not be easily generalisable to other settings.