基于轻量级工作流建模的研究与设计

业务过程建模是整个工作流管理系统的基础,一种高效灵活的建模技术对工作流管理系统起着至关重要的作用。笔者通过研究Petri网等现有的工作流建模技术,结合工作流系统的实际需求,提出了基于节点、迁移的轻量级工作流建模设想,并通过一个实际工作流建模过程进行了实践和验证。     

宏观视角下的供应链风险研究分析与综述

从供应链特性人手,对宏观层面开展供应链风险非线性动态研究的必要性进行了阐述,总结了模糊理论、Petri网理论等非线性动态理论在供应链风险宏观分析中的研究成果,并提出了下一步研究的方向,以期抛砖引玉,引起学者们对供应链风险宏观研究的关注.     

基于Petri网的母鸡转舍业务流程建模优化研究

选择农牧养殖业中的母鸡转舍这一业务流程建立Petri网模型,并对模型进行分析计算,找出时间瓶颈,依据ECRS原则提出优化方案,利用流程周期时间指标评价优化前后流程的效率,比较表明该模型在农牧养殖业务流程优化中是非常有效的。     

Testing and detecting jumps based on a discretely observed process

We propose a new nonparametric test for detecting the presence of jumps in asset prices using discretely observed data. Compared with the test in Aït-Sahalia and Jacod (2009), our new test enjoys the same asymptotic properties but has smaller variance. These results are justified both theoretically and numerically. We also propose a new procedure to locate the jumps. The jump identification problem reduces to a multiple comparison problem. We employ the false discovery rate approach to control the probability of type I error. Numerical studies further demonstrate the power of our new method.     

基于GSPN的物资采购流程效率分析模型

物资采购流程的再造即采购流程BPR可以有效提高供应链整体竞争力,而对采购流程的运作效率和性能的分析是BPR的基础和前提,也是当前BPR研究的热点。本文首先给出了广义随机Petri网(GSPN)的定义和相关性能评价与分析的方法,然后根据物资采购流程的实际特点,建立了基于GSPN的效率分析模型。     

基于战略匹配和层次分析的企业IT治理关键问题决策

企业战略与IT战略之间的匹配是确保IT治理取得良好绩效的重要前提。企业的IT治理必须完成五个关键问题的决策。为有效地将战略对应的思想转化为量化模型,支持企业决策,本文引入网络层次分析法模拟企业战略与IT战略之间的匹配关系,分别借用Porter的战略管理理论和Henderson的战略匹配模型代表企业战略和IT战略,提出了基于战略匹配的企业IT治理五个关键问题决策模型,并通过实例分析与运算验证了该模型的有效性。     

基于数据库和数据挖掘技术的客户关系管理

介绍了CRM(客户关系管理)的基本原理，提出了一种基于数据库技术的实现方法，描述了数据挖掘技术在实现CRM的各种功能中的运用。     

Mining cost analysis and cost control based on the sensitivity factor analysis

This paper systematically generalizes relevant theories and methods regarding mining cost control and constitutes the model for the mining cost analysis. It also comes up with the sensitivity factor analysis to conduct mining cost control. The theories and methods have been experimented with Jiangsu Chuanshan Mining Joint-Stock Company Ltd. Case studies have been undertaken on mining cost of the company and the most sensitive factor which affects mining cost has been found accordingly. Finally the paper concludes that the focus concerning the cost control of the company should be directed at output and material costs.     

基于Petri网的化学危险品出入库流程的建模与仿真

化学危险品出入库的安全性是其物流管理的一个重要内容,利用Petri网对化学危险品出入库流程进行了建模,并运用ExSpect软件对模型进行仿真分析,针对分析结果提出了一些安全防范措施,提升了化学危险品出入的安全高效性。     

Workflow process modelling and resource allocation based on polychromatic sets theory

In workflow management, studying the relationship between workflow process activities and resource allocation is one of the interesting research topics. Polychromatic sets theory (PST) is a relatively new mathematical theory which is especially suitable for treating such problems. Based on PST, this paper proposes a framework of workflow process modelling and resource allocation. As the theoretical foundation, polychromatic sets (PS), polychromatic graph (PG) and isolation operation (IO) of the PS are introduced. Special net structure (SNS), a special PG with colourless nodes and concolourous edges, is also introduced, and a new workflow process model and its verification algorithm are presented. Furthermore, a workflow resource model based on the entity of PS is developed. Based on IO of PS, the allocation mechanism that considers workflow process and workflow resource is proposed. Finally, a case study is provided to demonstrate the effectiveness of the above-mentioned theory and method.     

Agent-based simulation of consumer purchase behaviour based on quality,price and promotion

ABSTRACT

This paper studies the influence factors in consumer purchase behaviour. First, through reading and analysing the related paper, the authors summarise a lot of influence factors. Second, combined with the theme of the study, experts and scholars discuss these influence factors and choose quality, price and promotion of commodity as the object of this paper. Third, this paper presents an agent-based model and simulation method on the consumer purchase behaviours based on quality, price and promotion of commodity. The utility function is used to describe the model, which is implemented under NetLogo simulation environment. The results show that the proposed model can analyse and predict the effects of different quality, price and promotion strategies by the emergence of consumer purchase behaviour.     

A new decomposition and interpretation of Hicks-Moorsteen productivity index for analysis of Stock Exchange companies: Case study on pharmaceutical industry

This paper deals with the productivity index based on Hicks-Moorsteen (HM) productivity index for analysis of Stock Exchange firms. In this paper, a decomposition of Hicks-Moorsteen productivity index is provided that uses data envelopment analysis (DEA) models. On the other hand, it is offered a new interpretation and decomposition for components of HM productivity index that in previous studies were not performed any interpretation of it. These components have named the output production and the input consumption in terms of changing the efficiency frontier. In addition, by comparing the components of HM productivity index and productivity value, the optimal values of output production and input consumption are determined. Also, the analysis is determined how to identify the optimal value of a firm over a period of time. The proposed approach is applied to 26 pharmaceutical manufacturers that are from Tehran Stock Exchange. Data have been collected for six consecutive years (2009–2014) and have been considered financial ratios for evaluating companies. The results show that the Hicks-Moorsteen productivity index is more able to provide managerial aspects than other productivity indexes such as the Malmquist productivity index.     

Effects of macroeconomic factors on stock prices for BRICS using the variational mode decomposition and quantile method

Based on the variational mode decomposition and quantile model, this article examines the response of BRICS stock prices to shocks of internal and external macroeconomic factors in different market states and over various investment horizons. The results of quantile regression show that the influence of each factor is complex and changeable across countries, market states, and time horizons, thus exhibiting obvious differences. Nevertheless, these coefficients also show a certain degree of similarity. Besides, we find the relationship between stock prices and macroeconomic variables behaved notably differently during the financial crisis in 2008 compared to other periods. Therefore, paying attention to the investment horizon and market state has extraordinary significance for various market participants.     

Automatic business process analysis and simulation based on DEMO

Enterprise process modelling as a core area of the Enterprises Information Systems (EIS) research has long attracted theoreticians of new concepts, designers of artefacts, and practitioners of modelling. As a result a vast number of modelling methods have been generated. However, each method is challenging because they lack certain aspects. First, these methods view processes as a flowchart, undermining the deep (nested) structure of processes. Second, most of these methods are based on informal or semi-formal representation, failing direct model checking and formal analysis without further translations and mapping procedures. Finally, because the majority of these methods originated from a computing perspective, their focal point is control-flow rather than interaction of social actors. In reality, an enterprise is a complex socio-technical system that includes interaction of technical and social components. In this paper, we discuss an innovative method that will address some of these challenges and provide an improved tool for this purpose. We base our method on the field-proven DEMO theory and methodology, where emphasis is made on the interactions between social actors. The proposed method encompasses a set of graphical notations and constructs based on the Petri nets semantics that allows direct model analysis and simulation.