Inventory management maximization based on sales forecast: case study

The major purpose of this paper is to present a concept for reliable planning of the sales of small firms, where the large number of product variants complicates the implementation of this kind of system considerably. First, a methodology is presented to set up sales forecasting so that it can be integrated into the inventory management process. This inventory management software interprets forecasting information and provides users with a decision support system to minimize stocks in stores while at the same time avoiding missed sales. It is best applied in company types requiring high precision inventories, notably those in the textile industry; a large range of patterns are produced with many small variations (colors, size, customizations, etc.) and these products have a limited lifetime. Inventory management is difficult due to the multitude of products to account for and the necessity to sell them quickly. The methodology is intended for inventory management at the end of the supply chain. In store, the number of references, their similarities and the necessity to minimize unsold stock greatly complicates the reordering and restocking process. These types of companies do not easily lend themselves to classic techniques of sales forecasting and require specialized methods to estimate their needs precisely.     

论开放系统条件下价值创造范围的拓展

马克思的劳动价值理论是一个开放系统 ,它随着历史条件的变化而不断拓展。科技进步条件下具体劳动形式的变化 ,虽然没有改变创造价值的劳动的本质性内容 ,但却引起商品生产概念的内涵和外延不断扩大 ,从而拓宽了创造价值的生产劳动的范围 ,使它由狭义的物质生产领域跨越到了广义的非物质生产领域 ,实现了劳动价值理论史上的一个非常重要的转折。     

The structure of a micro-bat community in relation to gradients of environmental variation in a tropical urban area

We investigated patterns of community structure (species composition, foraging activity, and nightly foraging patterns) of bats in relation to gradients of environmental variation in a tropical urban area. A total of 32 sites spread equally across eight habitat types were sampled in the city of Townsville, North Queensland, Australia. Each site was sampled on 3 non-consecutive occasions using automated AnaBat systems. Eleven species were confidently identified while a possible four more were identified only to the genus level. Ordination of environmental variables measured at these sites identified two distinct environmental gradients reflecting the degree of urbanisation and foliage density. With increasing urbanisation there was a decline in species richness and total foraging activity. We used regression trees to characterise foraging preferences of each species. This analysis suggested that only one species of Mormopterus was able to exploit the resources provided by urbanisation. This species foraged in areas with higher numbers of white streetlights. The remaining species of bats preferred to forage within close proximity to natural vegetation and with low numbers of streetlights. The density of vegetation in long-established suburbs did not substantially reverse the trend for urban areas to have fewer bat species than original habitats.     

青岛经济增长模型的理论与实证

根据需求导向理论,应用计量经济方法,建立了青岛经济增长模型,并用岭回归的方法对模型进行了修正。对模型经济含义进行了分析与解释。     

Predicting future discoveries of European marine species by using a non-homogeneous renewal process

Summary.  Predicting future rates of species discovery and the number of species remaining are important in efforts to preserve biodiversity, discussions on the rate of species extinction and comparisons on the state of knowledge of animals and plants of different taxa. Data on discovery dates of species in 32 European marine taxa are analysed by using a class of thinned temporal renewal process models. These models allow for both underdispersion and overdispersion with respect to the non-homogeneous Poisson process. An approach for implementing Bayesian inference for these models is described that uses Markov chain Monte Carlo simulation and that is applicable to other types of thinned process. Predictions are made on the number of species remaining to be discovered in each taxon.     

发展与创新：经济法的方法、路径与视域（下）——简评我国中青年学者对经济法理论的贡献

我国经济法理论研究自生自发,群体互动,历经数载的艰辛探索,在老中青三代学者的共同推动下,现在已经是成绩斐然,举世瞩目,特别是一批勇于开拓、敢于创新的中青年学者作出了重大的贡献。文章从研究方法、分析路径、审视视域三方面入手,对我国中青年学者在经济法理论研究方面的突出成就进行了梳理与推介。笔者期望通过此种对已有研究成果的系统综合研究,能对经济法理论研究的潜深拓新有所助益。     

民事枉法裁判罪若干问题研究

民事枉法裁判罪是刑法理论研究较为薄弱的一个问题。该罪存在于从案件立案受理至执行的整个民事审判活动中,甚至包括附带民事诉讼的审判活动,法院调解和民事抗诉没有该罪存在的空间。参与民事审判活动并有审判权的审判人员相互间可以构成共同犯罪,无特定身份者也可成为民事枉法裁判罪的共犯。应当以科学的罪数理论分析认定和解决民事枉法裁判中的一罪与数罪问题。     

区间估计对假设检验的影响分析

通过对区间估计与假设检验问题内在联系的研究，探讨了利用置信区间解决假设检验问题拒绝域的新思路与辨证关系。     

线性无量纲化方法比较研究

根据线性无量纲化方法函数构成所使用的中心点值和值域指标以及其斜率和截距的表达式,对8种线性无量纲化方法进行分析,从不同的角度再次论证不同线性无量纲化方法所满足的性质定理,并进行了理论论证。同时,通过对线性无量纲化方法的分类比较,结合相关性质定理提出了多种线性无量纲化方法,并说明了其相关性质,具有一定的科学性。同时还分析了在对多指标数据进行综合评价的过程中只采用一种线性无量纲化方法的不足,提出了采用多种无量纲化方法的设想的理论可行性,并用案例进行了实证分析,表明其存在一定的合理性。