基于多Agent的协同供应链模型

供应链通过获取原材料,转换成最终产品,交付最终用户等一系列过程将供应商、制造商、仓储、分销中心以及零售商等形成一个巨大的网络体系。当前,随着企业经营模式的变化,协同与伙伴管理成为供应链变革的推动力量。而协同供应链能够对市场变化和用户需求形成快速响应。将Agent理论应用于协同供应链管理,分析协同供应链的主要特征,并提出基于多Agent的协同供应链模型。     

再论中国金融体系的脆弱性

本文的目的就是通过验证我国金融体系在不完全市场的制约条件下,能否发挥"价值创造、价格发现、风险分散、流动性供给、信息生产和公司治理"这六大基本功能,以及通过进一步检验货币政策的有效性,来揭示当今中国金融体系脆弱性的表现及其症结所在.论文通过分析发现,目前影响我国金融体系"健全性"的两大基本要素是房地产价格和流动性,它们直接左右银行的信贷行为;相反,利差幅度和基础货币的调控却没有显著的制约效果.所有这些特征都恰恰反映了我国金融体系的基本功能至今为止还没得到有效的发挥.     

论为纳税人服务

本文从税收的性质、纳税人的法律地位和政府职能转变三个角度,论述了为纳税人服务的理论依据,同时借鉴国外为纳税人服务的经验,分析了为纳税人服务理念下的公共产品提供、税收政策、制度和措施.     

民营企业委托—代理关系中的激励和约束机制

在民营企业的委托—代理关系中,民营企业主与职业经理人之间的冲突源于双方的目标追求不一致和双方信息不对称两大问题。解决这两大问题的方法,不仅需要对职业经理人实行激励机制,而且需要有效的监督和约束机制。     

从交易成本角度看我国中小企业融资难的问题

中小企业融资难是长期以来讨论的一个热门话题,运用新制度学派的交易成本理论来解释这一现象。我国银行的运行制度、组织制度、外部并不完善的市场经济体系等一系列制度的运行,造成了我国中小企业融资的交易成本过高,并成为中小企业融资的一种瓶颈。     

基于多AGENT的供应链管理系统设计

以Agent技术为基础并以CORBA为分布式规范对供应链管理系统框架设计进行探讨。认为该类平台的设计实现 ,对于供应链的整合 ,从而提高企业的市场竞争力具有一定的理论意义和实际应用价值。     

论保险代理人行为对保险人之拘束力

保险代理人与保险人之间可能系劳动关系,亦可能系代理关系。保险代理人所知应视为保险人所知。保险代理人代投保人填写投保单的后果应由投保人承担。保险人可以书面限制保险代理人的代理权。保险人可在保险合同中约定投保人对保险人的告知均需以书面进行。     

Agent‐based modeling for ex ante assessment of tree crop innovations: litchis in northern Thailand

This study uses an agent‐based model for ex ante assessment of agricultural innovations. The model builds on whole farm mathematical programming (MP) and extends the methodology with a spatial representation of the system, the heterogeneity of farm households and landscapes, and the interaction between farm households. We apply the model in a northern Thai watershed to study the potential of four innovations to increase the profitability of litchi orchards. Cost‐benefit analysis shows that each innovation would increase the profitability of litchi growing; however, the results of the agent‐based model show that at current price levels these innovations alone would not be enough to stem the decline in the area under litchis. The model was validated and the sensitivity of the results tested for variations in the irrigated water supply and liquidity. We report on how farmers responded to these results and discuss the implications for other areas in northern Thailand.     

Patient- and clinician-reported satisfaction with pharmacological stress agents for single photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI)

Abstract

Objective:

The objective of this study was to compare clinician and patient measures of satisfaction with two pharmacological stress agents (PSA), regadenoson and dipyridamole, used in Single Photon Emission Computed Tomography (SPECT) Myocardial Perfusion Imaging (MPI).

Methods:

This observational study included patients who had undergone SPECT MPI with regadenoson or dipyridamole, as well as the clinician/clinical technologist who performed the test. Mean scores for individual item and domain scores of the main outcome measures were computed as well as the effect sizes (ES) of the mean difference in scores between treatment groups. Statistical significance of the mean item and domain score differences were assessed via Mann-Whitney tests.

Main outcomes measures:

Two self-report questionnaires which had beeb previously developed and validated: Patient Satisfaction/Preference Questionnaire (PSPQ) and Clinician Satisfaction/Preference Questionnaire (CSPQ).

Results:

A total of 87 patients (68 received regadenoson, 19 received dipyridamole) and nine clinicians/clinical technologists took part in the study. Patients had a mean age of 66.8?±?12.2 years, and 56.3% were male. Compared to dipyridamole, use of regadenoson was associated with greater clinician satisfaction on all items and domains of the CSPQ (p?<?0.001 for all comparisons). Among patients, regadenoson was associated with less bother and greater satisfaction than dipyridamole for all items on the PSPQ. These patients reported less stinging at the injection site (ES?=??0.66) and less nervousness during injection (ES?=??0.60). The PSPQ found that regadenoson patients were more satisfied with their PSA than dipyridamole patients in all areas.

Limitations:

This study utilized a relatively small sample size of dipyridamole patients and lacked an adenosine group. A broader sampling of professionals would also help demonstrate generalizability.

Conclusion:

Both patients and clinicians reported higher satisfaction with regadenoson compared to dipyridamole for SPECT-MPI. Clinicians were particularly satisfied with the preparation and administration aspects of the drug, while patients rated it highly on convenience and reduced incidence of side-effects.     

Building internal business scenarios based on real data from a performance measurement system

This paper presents a new methodology to build internal business scenarios from the data gathered by some key performance indicators (KPIs) defined within a performance measurement system. The application of the principal components analysis technique leads to the identification of latent relationships between KPIs that underlies some important business aspects. Further, this methodology allows to represent not only the temporal evolution of the organisation as a function of these business aspects but also the definition and determination of internal business scenarios, being therefore the source of meaningful managerial information. At the end of the paper, results of a practical application are presented and discussed, as well as their importance for the organisation from a decision making point of view.