论二级核算制在糖厂成本管理中的作用

本文介绍了二级核算制及其在糖厂成本管理中的效果和作用。认为二级核算制是企业内部经济核算制度的最佳形式之一，对降低生产成本具有十分重要的作用。     

Analysis on Optimal Service Frequency of Public Transport Considered with Generalised Cost

The service frequency is an important factor which shows the supply and service level of public transportion. By considering the effect of occupancy rate on generalised cost firstly, the authors establish a new public transport model based on generalised cost. Then from the view of optimal pricing, this paper constructs two optimal service frequency models by the aim of maximizing social welfare and maximizing profit separately. The result shows that, without the effect of externalities, the two optimal service frequency is the same. Finally, this paper use some parameters of generalised cost, which coming from a city, to simulate this model, and the result shows it is feasible.     

The Cost Calculate Method on Choose Vendors Based on the Supply Chain

At present, when the enterprises that have implemented the SCM chose co - vendors, all kinds of methods have been employed to appraise them. These results are always influenced by the members' subjective attitude at any rate. Based on the fact that the cost is the most important factor when choosing, and according to the requirement of the enterprise on the supply chain, the authors research the cost's component on supply chain. The cost includes: quality cost, price cost, stock cost, OOS cost, transportation cost and other cost. By calculating the products'practical cost synthetically , the enterprises could choose the vendors whose cost is cheapest as their co - vendors. The calculate cost is an objective and feasible method to choosing vendors reasonably. Finally, some examples and related discussion are given.     

An EOQ Model for Non-instantaneous Replenishment with Partial Backlogging

It is usually ignored in the traditional EOQ model that the opportunity cost results from lost sales when the enterprise has no commodity in the wearhouse. This paper focuses on some operating enterprise.Under the condition of time_limited partial back_orders and non_instant supply,an EOQ model is established of which it is more reasonable to assume the loss of without commodity in the warehouse divided into two parts:the opportunity cost due to lost sales and the shortage cost.It is discussed that the general cost function and the optimal solution to minimizing the total cost.The new basis of the decision of store system management is provided.Moreover,the model is applied to the example.     

Selection of Polymeric Flocculant for Adjusting the Sludge Quality of Municipal Wastewater Treatment Plants

The thickened surplus sludge from municipal wastewater treatment plants is generally mechanically dewatered after regulated with flocculants and the type and dosage of flocculants will influence the dewatering effect directly.And the cost of flocculants is the main part of operating cost of sewage sludge treatment.With the processing practice on yields,thickening and dewatering pattern of Zhenjiang Wastewater Treatment Plant,the analysis and selection of flocculants are carried out with respect to the type and dosage of flocculants for sewage sludge regulation.the principles for flocculants selection and simple calculation method for chemicals cost for sludge treatment are proposed.It is suggested that the dosage of flocculants for sludge regulation should be adjusted in different seasons in real operation of the municipal wastewater treatment plants.     

Effect of Rooting Pattern on Rice Productivity under Different Water Regimes

Three rice varieties, viz. ADT 31 (drought tolerant) CO 41 (upland) and IR 50 (drought susceptible), were employed to study their rooting patterns under different water regimes. ADT 31 had better root penetration and distribution under water stress situation compared to others. The values on root weight also established a similar trend. Isotopic studies with ³²P also provided evidence in this regard wherein the variety ADT 31 showed its adaptiveness to drought. Marginal reduction in plant height, less tiller production and leaf area reductions were noted in ADT 31 and CO 41 under decreasing soil moisture which showed its ability to cope with the water stress situation. Though IR 50 recorded higher grain yield at normal irrigation, a drastic reduction was noted under extreme water deficit. But ADT 31 recorded consistent values in all situations with slight marginal reduction which evidently proved the interdependent nature of rooting pattern and its influence on productivity.     

城市固体废物堆肥技术的经济效益分析

目前,一些地方政府对城市固体废物(MSW)堆肥很有兴趣,但是关于MSW堆肥成本方面的信息并不是很多.为此,比较了城市固体废弃物堆肥技术与其它固体废弃物的处理技术特点,介绍了国外城市固体废弃物堆肥技术应用现状及堆肥的成本分析,分析了城市固体废弃物堆肥技术的经济效益.经济效益分析显示,与填埋相比MSW堆肥还是具有竞争力的,但是限于我国目前的经济现状,自然堆肥法是一个比较现实的选择.     

节水工程措施投入产出关系定量分析

发展农业节水，对我国全面建设小康社会、促进经济社会的可持续发展至关重要。结合江苏农业常用节水措施投入产出关系的典型资料，采用有效的随机数学方法建立了同一地区不同节水措施，及同一节水措施不同地区下的投入产出关系定量模型。进一步定量分析一定成本下的效益变化，及一定效益期望下的成本控制，系统研究了这类节水措施下投入产出的内在关系。