乘积空间上的奇异积分算子

奇异积分算子是调和分析中重要的分支之一.本文引入了两个参变量的一类广义核及其所定义的乘积空间上的奇异积分算子,这类核的条件类似单参变量情形.在这些条件下,讨论并且得到其Lp有界性和加权Lp有界性,这些结果推广了Fefferman—Slein的结果.     

显微组织和盐水介质对16Mn钢疲劳裂缝扩展速率的影响

本文研究了热轧供货状态和淬火回火状态的16Mn钢的疲劳裂缝扩展速率以及3.5％NaCl水介质的影响。对显微组织,应力比和载荷频率的影响规律以及腐蚀产物的作用进行了一定分析。最后对腐蚀疲劳裂纹扩展曲线在低△K范围出现突然转折的现象进行了扼要讨论。     

关于“储粮害虫”与“仓库害虫”名称的商榷

本文从实际和学科的发展两方面论证了采用“仓库害虫”名称的原因和优点。     

关于体上的自共轭矩阵的注记

在文[1]、[2]的基础上,本注记证明了一般体上的自共轭矩阵的收缩定理,特征数≠2的体上的自共轭矩阵的GH对角化定理以及体上某些类型矩阵分解为自共轭矩阵乘积的相应结果,并得到了四元数体上的可中心化矩阵与可交换化矩阵的一种关系。     

关于储藏物害虫与防治中值得商榷的几个问题

本文针对当前在储藏物害虫与防治中存在的情况,从虫种分布调查,化学防治和生物防治等方面提出了三个问题,并作了扼要分析.     

关于"代替法"的一个定理

基于代替法的思想,给出一个极限定理,能较好地解决一类特殊"和式"的极限问题.同时,利用对数函数的性质,又能够用来解决一些"积式"的极限.     

Variables influencing food perception reviewed for consumer-oriented product development

Consumer wishes have to be translated into product characteristics to implement consumer-oriented product development. Before this step can be made, insight in food-related behavior and perception of consumers is necessary to make the right, useful, and successful translation. Food choice behavior and consumers' perception are studied in many disciplines. Models of food behavior and preferences therefore were studied from a multidisciplinary perspective. Nearly all models structure the determinants related to the person, the food, and the environment. Consequently, the overview of models was used as a basis to structure the variables influencing food perception into a model for consumer-oriented product development. To this new model, referred to as food perception model, other variables like time and place as part of consumption moment were added. These are important variables influencing consumers' perception, and therefore of increasing importance to consumer-oriented product development nowadays. In further research, the presented food perception model is used as a tool to implement successful consumer-oriented product development.     

Composite Distributive Lattices as Annotation Domains for Mediators

In a mediator system based on annotated logics it is a suitable requirement to allow annotations from different lattices in one program on a per-predicate basis. These lattices however may be related through common sublattices, hence demanding predicates which are able to carry combinations of annotations, or access to components of annotations. We show both demands to be satisifiable by using various composition operations on the domain of complete bounded distributive lattices or bilattices, most importantly the free distributive product. An implementation of the presented concepts, based on the KOMET implementation of SLG-AL with constraints, is briefly introduced.     

动态联盟建盟过程模型与分析

主要研究动态联盟建盟过程的建模问题。提出一种工具──广义产品依赖关系图（ＧＰＤＲＤ）,利用该工具建立了动态联盟建盟过程的数学模型,同时讨论了动态联盟建盟的各种可能模式,并对每种模式的优缺点和适应情况进行了分析。     

The role of the corpus callosum in dichotic listening: A combined morphological and diffusion tensor imaging study.

The objective of the present study was to examine the role of the corpus callosum (CC) in dichotic listening. For this purpose, 40 right-handed healthy male participants were assessed with morphological and diffusion tensor imaging, which yielded macrostructural (midsagittal area) and microstructural (mean diffusion, fractional anisotropy) measures of the total CC and predefined subregions. Applying the standard consonant-vowel Bergen Dichotic Listening Test (including 3 different attentional instructions), the authors found dichotic listening performance to be substantially related to the integrity of the CC at both macro- and microstructural levels. Results indicate a dual role of the CC; it is relevant not only for the stimulus-driven (bottom-up) transfer of left-ear input to the left hemisphere but also for its attentional (top-down) modulation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)