Corporate manpower planning

In this paper the necessity of corporate manpower planning is discussed and the growing interest in it within many organizations. In particular medium and long term forecasting in rather large and structured organizations are explained and the need for tools to get a survey of the evolution of their personnel strength. These tools should help management and staff-members of a planning or personnel department to design alternative policies concerning promotions, recruitments, etc.We will present a planning method which satisfies these requirements. The interactive manpower planning system FORMASY presents forecasts concerning the evolution of the personnel strength and makes it possible to assess the impacts of alternative policies. This planning system is based on a Markov model and is being used on a general purpose computer in several Dutch organizations, both industrial and governmental.FORMASY has proved its value for practical manpower planning which will be explained by means of a case-study with the Royal Dutch Airforce.     

Corporate manpower planning: a review of models

Manpower planning has achieved maturity during the past decade. Personnel practitioners have become conversant with the analysis of manpower systems, the use of quantitative techniques, and have developed a sound approach to the whole question of manpower management. But, whilst they no longer rely on the management scientist for using those models and other techniques now widely available, there is a continued contribution to be made in advancing the field. This paper reviews the practical relecance of existing models. It concentrates on techniques for evaluating manpower supply and career management problems, distinguishing especially between the roles played by exploratory and normative models. The author hopes that this article will give management scientists a realistic appraisal of current practice and provide pointers as to where developments are most needed.     

Models for planning capacity expansion in local access telecommunication networks

The rapid progress of communications technology has created new opportunities for modeling and optimizing the design of local telecommunication systems. The complexity, diversity, and continuous evolution of these networks pose several modeling challenges. In this paper, we present an overview of the local telephone network environment, and discuss possible modeling approaches. In particular, we (i) discuss the engineering characteristics of the network, and introduce terminology that is commonly used in the communications industry and literature; (ii) describe a general local access network planning model and framework, and motivate different possible modeling assumptions; (iii) summarize various existing planning models in the context of this framework; and (iv) describe some new modeling approaches. The discussion in this paper is directed both to researchers interested in modeling local telecommunications systems and to planners interested in using such models. Our goal is to present relevant aspects of the engineering environment for local access telecommunication networks, and to discuss the relationship between engineering issues and the formulation of economic decision models. We indicate how changes in the underlying switching and transmission technology affect the modeling of the local telephone network. We also review various planning issues and discuss possible optimization approaches for treating them.This research was initiated through a grant from GTE Laboratories, IncorporatedSupported in part by an AT&T research award.Supported in part by Grant No. ECS-8316224 from the Systems Theory and Operations Research Program of the National Science Foundation.     

An improved local branching approach for train formation planning

The train formation plan (TFP) determines routing and frequency of trains, and assigns the demands to trains. In this paper, an improved local branching algorithm is proposed for the TFP model in Iranian railway. This solution strategy is exact in nature, although it is designed to improve the heuristic behavior of the mixed integer programming (MIP) solver at hand. In the local branching algorithm, additional constraints are built in the model for the binary variables, but in the improved local branching algorithm, the additional constraints are built in the model for integer variables. A state-of-the-art method is applied for parameter tuning using design of experiments approach. To evaluate the proposed solution method, we have simulated and solved twenty test problems. The results show the efficiency and effectiveness of the proposed approach. The proposed algorithm is implemented for Iranian Railway network as a case study.     

Use of the equivalent attribute technique in multi-criteria planning of local energy systems

This paper discusses how the equivalent attribute technique (EAT) can be used to improve the comprehensibility of a multi-attribute utility theory study. When using EAT, ‘vague’ expected total utility values are converted into equivalent values for one of the attributes being considered, often an economic attribute. Two models are considered: a simplified linear model, and a more advanced non-linear model that includes the DM’s strength-of-preference and risk attitude. EAT is particularly useful in distinguishing between alternatives with similar utility values. When the difference between utility values is larger, the choice among the alternatives should be clear, and EAT therefore becomes less useful. The technique can still be used, although extra care is needed when choosing the equivalent attribute. A local energy-planning problem is used as a case study to illustrate and exemplify the EAT approach.     

Central versus local multiple stage inventory planning: An analysis of solutions

Supply chain management refers to the integration of all activities associated with moving goods from raw material stages through to end users. Yet this system-wide vision of inventory planning often requires the coordination of several commercially independent entities, such as suppliers, manufacturers and distributors. This study explores the issue of friction between replenishment policies, defined as the disparity between centrally and locally planned solutions to 98,820 deterministic, multiple stage inventory planning problems modeling systems of varying levels of complexity. Friction is found to be strongly related to certain cost factors, suggesting that certain supply chains could be more vulnerable to tension and inefficiencies when replenishment policies are derived without cooperation between commercially independent yet logistically interdependent stages. These results can also be applied to identify relationships between the findings of otherwise seemingly disparate previous studies of coordination schemes for supply chain partners.     

Ranking hubs and authorities using matrix functions

The notions of subgraph centrality and communicability, based on the exponential of the adjacency matrix of the underlying graph, have been effectively used in the analysis of undirected networks. In this paper we propose an extension of these measures to directed networks, and we apply them to the problem of ranking hubs and authorities. The extension is achieved by bipartization, i.e., the directed network is mapped onto a bipartite undirected network with twice as many nodes in order to obtain a network with a symmetric adjacency matrix. We explicitly determine the exponential of this adjacency matrix in terms of the adjacency matrix of the original, directed network, and we give an interpretation of centrality and communicability in this new context, leading to a technique for ranking hubs and authorities. The matrix exponential method for computing hubs and authorities is compared to the well known HITS algorithm, both on small artificial examples and on more realistic real-world networks. A few other ranking algorithms are also discussed and compared with our technique. The use of Gaussian quadrature rules for calculating hub and authority scores is discussed.     

Comments on ID-based multi-signature with distinguished signing authorities

A multi-signature scheme with distinguished signing authorities is a multi-signature scheme where the signed document is divided into several parts and each signer signs only on the part which he is responsible for. This article shows the security weakness of Wu–Hsu’s ID-based multi-signature scheme with distinguished signing authorities.     

A financial alliance compromise between executives and supervisory authorities

In this paper, we are looking for the best financial alliance compromise structure between the executives of the banks and insurance companies and the bank and insurance supervisory authorities in Finland. First, we studied alternative alliance structures between banks and insurance companies from the point of view of supervisory authorities. Together with leaders and experts of the supervisory authorities, we introduced eight criteria for the evaluation of the six alternative alliance structures. The evaluation was carried out by an expert panel consisting of the representatives of the supervisory authorities.In our earlier research, the financial conglomerate was preferred by bank and insurance executives to the other alternatives. The alliance models based on plain cross-selling agreements received the highest ranks in the evaluation of supervisory authorities. Under certain conditions, the financial conglomerate might be an acceptable compromise alternative for the supervisory authorities as well.     

“问诊”企业治理

监审态度与经济周期的错位,常常导致业绩和风险管理失衡的局面。在大家都沉浸在成功的喜悦中时,企业应当考虑采取措施来平衡业绩审查循环,大胆地提出一些尖锐的问题,将是一个好的开始。     

Integrating optimal annuity planning with consumption-investment selections in retirement planning

Annuities can be effective tools in managing longevity risk in retirement planning. This paper develops a framework that merges annuity purchase decisions with consumption-investment selections in retirement planning. After introducing a pricing and a benefit payment model for an annuity, we construct a multi-period wealth evolution model. An optimization problem is formulated with an objective of maximizing lifetime utility of consumption and wealth. Optimal decisions are determined as a trade off between consumption and investment among an annuity, a risky and a risk-free asset. Computational results are provided to illustrate the practical implications of the framework.     

Motion planning in tori

Let X be a subcomplex of the standard CW-decomposition of then-dimensional torus. We exhibit an explicit optimal motion planningalgorithm for X. This construction is used to calculate thetopological complexity of complements of general position arrangementsand Eilenberg–Mac Lane spaces associated to right-angledArtin groups.     

Effectiveness in strategic planning

There is a considerable body of literature on how to do strategic planning effectively. There is however no concise statement of effectiveness in strategic planning. One definition of an effective strategic planning system would be a system that sets goals and achieves them within a specified time. In this paper it is argued that this goals/achievement view of effectiveness has serious deficiencies. As an alternative to an ends oriented view of effectiveness, a process orientation is adopted. Twelve attributes of effectiveness for strategic planning systems are proposed.     

信息披露制度、公司风险投资(CVC)信息披露与公司价值

信息披露制度对信息披露水平的影响及其经济效果一直是学术研究的热点。在交易所信息披露制度文件基础上,本文构建了可靠的CVC信息披露水平指数。研究发现信息披露制度的出台有效地提高了CVC信息披露水平。利用信息披露制度出台这一准自然实验,采用双重差分法发现CVC信息披露水平的提高增加了上市公司价值,进一步研究发现不确定性和市场竞争程度会对二者关系产生调节作用。该研究结果说明信息披露制度具有积极的政策效用,也为CVC信息披露制度的出台提供了经验证据。     

现金流与公司破产决策

根据中国破产法的相关规定研究了公司决策者在公司面临资不抵债和现金流短缺(也就是不能清偿)的情况时,在保障职工权益的前提下,如何选择破产点能使得股东利益最大化的问题.发现公司债务和现金流对于公司的破产决策都有重要影响,破产决策点和职工权益也存在一定的函数关系,此研究将为面临经营困境公司的决策机构做出更合理的破产决策提供一定依据.