On the Laplace transform of delta function

Delta function is an important function in mathematics and physics. In this paper, the Laplace transforms of δ(t)and δ(t-τ)have been discussed in detail. After the Laplace transform of δ(t)is analyzed, the author has found that three aspects should be taken into account, i.e. τ→0+, τ→0- andτ=0; and it is the same with the Laplace transform of δ(t-τ). Then the results of the Laplace transform of Delta function have been obtained in a rigorous and comprehensive sense.     

Computation of the Wavelet and Scaling Functions Using Coefficients of Wavelet Filter

To associate the discrete wavelet transform with the continuous wavelet transform, an iterative convolution algorithm is given by analyzing the and scaling function using coefficients of wavelet filter. usually used methods of the computation The way of judging the convergence of improved algorithm on of the wavelet function iterative convolution is given. The advantages of improved algorithm is analyzed. The experimental result shows that the modified algorithm is effective.     

Relationship between the City Central District''s Evolutionand The Formation of CBD

Agglomeration Effects and its evolution lead to the formation and further evolution to multi centers of a city's original center.During the further evolution to multi centers, there exists a rule which is proved to be true by the example of the formation and evolution of The dynamic adjustment of functions between business and trade within centersdrive the formation of a modern city's central business district(CBD).This rule discloses the following facts in planning and policy making of CBD:we must obey the natural rules of city centers' evolution,including the rules of Agglomeration Effects;we must lead CBD to mainly agglomerate business,not agglomerate everything;we can choose the original city center or other place out of the original city center as a CBD's location.     

浅谈茶的保健功能及茶保健品的发展现状

茶的保健功能主要依赖于它本身所含成分的生理功能。从茶所含物质的特性入手,浅论茶的主要保健功效,尤其在抑制自由基方面的抗氧化作用。介绍了几种目前比较流行的茶的特色,以及茶的发展动态。     

叶黄素生物活性和环境因素对其稳定性影响研究进展

叶黄素是一种广泛存在于蔬菜、花卉、水果及某些藻类生物中的天然色素，是理想膳食的一种基本营养素。近年来，其在食品、医药和动物饲料等领域的应用愈加广泛，以叶黄素为基础的功能性食品开发逐渐成为食品资源利用的重点发展方向。分别介绍了有机溶剂提取、超声波辅助提取、微波辅助提取、酶辅助提取和超临界CO₂萃取5种叶黄素的提取方法，重点综述了叶黄素在预防及改善眼睛疾病、神经退行性疾病和心血管、肿瘤、肥胖相关疾病等方面的功能作用及其发挥生物活性的作用机制，分析阐述了在叶黄素相关产品开发时氧气、温度、pH、光照等因素对叶黄素稳定性的影响，以期为叶黄素在功能性食品研发中的应用提供理论支撑。     

OPERATION PROPERTIES OF r-CONVEX FUNCTIONS

Generalized convex function is a generalization of convex func-tion,including pseudoconvex function,quasiconvex function,r-convex function,etc.The properties and operation properties of generalized convex functionplay an imporant role in generalized convex programming.Xue Jiasheng discu-sed the constructive method of pseudoconvex function;J.P.Crouzeix dicussedthe properties of quasiconvex function.This paper only discusses a class ofgeneralized convex function,r-convex functions.     

乳酸菌及其生理功能研究的进展

详细介绍了乳酸菌的种类、生理特性,以及乳酸菌生理功能的研究进展,并对乳酸菌的研究应用进行了展望。     

On the Design of Roof Garden

Building roof garden can widen the green area and expand the green space effectively.It has the ecological function for improving the environment, beautification function for molding a person's sentiment and colorful practical function. It can promote the ecological balance of the city and optimize the environment for human residence to meet the needs of people to approach the nature and return to the nature. In designing roof garden, the favorite factors, such as wide field of vision, good illumination, large temperature difference, little pollution, small people flow as well as adverse factors concerning the field, bearing capacity, soil and wind power should be taken into account. In the meantime, to create an outer ecological space with abundant cultural connotation, it is necessary to take safety as prerequisite, ecology as basis,artistic quality as its core, function as its purpose and economy as its guarantee.     

关于加强新疆乡镇政府建设

新疆地处祖国西北边陲和亚欧腹地,周边与多个国家相邻,区内多个民族、多种宗教并存。新疆是我国拥有后备资源最多、开发潜力最大的一个省区,具有从资源上支撑全国经济发展的重要战略地位。新疆是我国少数民族聚居地区,民族问题和宗教问题比较突出,民族问题和宗教问题往往交织在一起,并且容易为“三股势力”所利用,新疆境内外“三股势力”是危害国家统一、破坏民族团结和社会政治稳定的主要危险,“7.5”事件是个典型的例子。新疆在维护祖国统一和社会安定方面处于重要的战略地位。同时,新疆的经济发展水平相对落后,而且区域内部经济发展状况不均衡。新疆人口素质尤其是农村人口素质偏低,农民在从事生产经营对基层政府的依赖性比较强。新疆的特殊区情决定了在新疆乡镇政府的作用不能忽视。因此,本文通过分析新疆的特殊区情,认为在新疆尤其是经济欠发达地区加强乡镇政府的管理职能非常重要。下面通过南北疆各选一个典型的县具体情况的分析,找出新疆区情的特殊性,并找出特殊区情对新疆乡镇政府管理职能的影响,以及在此基础上提出了新疆乡镇政府较好的发挥作用、保证新疆农村各项事业发展的对策建议。     

Using ANFIS to building load Joased on the number of customers

To estimate the building load Based on the number of customers and stay, a new model was built with the Adaptive Neuro-Fuzzy Inference System (ANFIS) to research its feasibility and applicability. With the average error and the coefficient of multiple determinations estimating performance of the model, ultimate results showed the ANFIS model is very valid, and the accuracy rate is 99.8%. Therefore it can realize regulating and controlling compartment loads according to the number of customers and stay for market buildings. Comparing to traditional temperature and humidity control of the entire space to adjust to the change of the load, the new method can rapidly change the local environment to meet the requirements of customer comfort, and fully realize energy conservation.     

CLOSURE FUNCTION OF CONVEX FUNCTION AND NONCONVEX FUNCTION IN HILBERT SPACE

This paper presents that the closure function of convex func-tion in Hilbert space is definied by affine function approximation.On the ba-sis of closure function of convex function,closure function of nonconvex func-tion is introduced by concept of convex hull function.Some properties ofclosure function of convex function and nonconvex function are discussed.     

The Exceptional Sets of Entire and Meromorphic Functions

In this paper,we introduce the concept of Borel removable sets into the research of angular distributions in the cases that entire functions and their derivatives assume two small entire functions with the multiple value taken into account, and that meromorphic functions with infinity being a Nevanlinna deficient value and the derivatives of all orders assume two small meromorphic functions,and we prove the existence of the corresponding singular directions.     

浅谈蜂胶的保健作用

论述了蜂胶的来源、原理、保健功能和作用机理,指出生产和食用蜂胶时应注意的问题。     

嗜水气单胞菌脂多糖对乌鳢抗氧化性能及其他生理功能的影响

摘要：以乌鳢为试料,研究灭活嗜水气单胞菌脂多糖（LPS）对其抗氧化性能、免疫功能及消化功能的影响,试验结果表明嗜水气单胞菌LPS能提高乌鳢的抗氧化性能、免疫功能及消化功能,但不同浓度脂多糖的生理作用不同,0.8 mg/ mL组可提高乌鳢的抗氧化性能：在第10天时血液CAT酶活力达0.17U、SOD酶活力为16.56U/mg,均比对照（CK）组的高;0.6 mg/ mL嗜水气单胞菌脂多糖能提高乌鳢血液溶菌酶、胃肠道淀粉酶、蛋白酶的活力：0.6mg/ mL组LPS处理的乌鳢血液溶菌酶活力到第20天时为最高,达到0.0399U,在第10天时,淀粉酶活力为17.21U,蛋白酶活力为0.36U,均高于对照组。     

4种锦鸡儿属(Caragana)植物抗旱性研究

为了给乌兰布和地区造林植物种的选择、植物配置以及植被建设方面提供更充足的理论依据,本试验在田间持续干旱条件下,研究4种锦鸡儿属植物柠条锦鸡儿、中间锦鸡儿、狭叶锦鸡儿和荒漠锦鸡儿对干旱胁迫的生理响应,并用隶属函数法进行抗旱性综合评价。结果表明,4种锦鸡儿属植物幼苗叶片含水量和束缚水/自由水含量比值随着土壤含水量的减少而增加,方差分析表明,中间锦鸡儿和狭叶锦鸡儿差异不显著,与柠条锦鸡儿、荒漠锦鸡儿比有显著性差异,且柠条锦鸡儿的叶片含水量和束缚水/自由水含量比值最高;随着土壤干旱程度加剧,4种植物叶片水分亏缺、细胞膜透性都呈增加趋势,而离体叶片失水速率变化趋势基本相似,均表现为前期(0~9 h)失水快,后期(9~24 h)失水慢。根据抗旱隶属值,4种锦鸡儿属植物的抗旱性由大到小的顺序为：柠条锦鸡儿>中间锦鸡儿>狭叶锦鸡儿>荒漠锦鸡儿。     

大庆城区湿地空气调节功能价值估算

为了尽快改善大庆湿地自然保护区的城市生态环境,不断提高总体的生态环境质量,笔者从大庆湿地的空气调节功能入手,依据环境经济学和生态经济学原理,采用碳税法对该湿地所提供的空气调节功能进行科学估算。结果表明,大庆湿地主要植被固定CO2的价值为4.95亿元,释放O2的价值为4.35亿元,去除温室气体排放损失价值为0.1亿元,即该地区生态系统的大气调节功能价值为9.2亿元,气体调节价值为6862元/hm2。本研究表明,大庆湿地生态系统固定大气中CO2的同时,增加大气中的O2,对维持区域大气中的CO2和O2的动态平衡,减缓温室效应,提供人类生存基本条件有着不可代替的作用。     

浅析传统农业折射下的中国现代农业发展

简要阐述了中国传统农业的概况及其与现代农业的关系,并分析了现代农业的内涵及特征,指出现代农业是在传统农业的基础上发展的。在现代农业发展方面,提出了要在价值取向、产业结构、经营方式及劳动者技能四方面做出转变并分析了政府在其中的作用。最后,还预见了现代农业在科学技术的支撑下未来的5个发展方向。