We establish the construction theory of function based upon a local field Kp as underlying space. By virture of the concept of pseudo-differential operator, we introduce ＂fractal calculus＂ （or, p-type calculus, or,...We establish the construction theory of function based upon a local field Kp as underlying space. By virture of the concept of pseudo-differential operator, we introduce ＂fractal calculus＂ （or, p-type calculus, or, Gibbs-Butzer calculus）. Then, show the Jackson direct approximation theorems, Bermstein inverse approximation theorems and the equivalent approximation theorems for compact group D（C Kp） and locally compact group Kp^＋-（= Kp）, so that the foundation of construction theory of function on local fields is established. Moreover, the Jackson type, Bernstein type, and equivalent approximation theorems on the HOlder-type space C^σ（Kp）, σ 〉0, are proved; then the equivalent approximation theorem on Sobolev-type space Wr（Kp）, σ≥0, 1≤r 〈∞, is shown.展开更多
Based on sine and cosine functions, the compactly supported orthogonal wavelet filter coefficients with arbitrary length are constructed for the first time. When N = 2(k-1) and N = 2k, the unified analytic constructio...Based on sine and cosine functions, the compactly supported orthogonal wavelet filter coefficients with arbitrary length are constructed for the first time. When N = 2(k-1) and N = 2k, the unified analytic constructions of orthogonal wavelet filters are put forward, respectively. The famous Daubechies filter and some other well-known wavelet filters are tested by the proposed novel method which is very useful for wavelet theory research and many application areas such as pattern recognition.展开更多
Reverse logistics are playing more and more important role with the development of competition and the social responsibility of enterprises.It could be divided into commission acceptance,recycling and returned goods h...Reverse logistics are playing more and more important role with the development of competition and the social responsibility of enterprises.It could be divided into commission acceptance,recycling and returned goods handling.Reverse logistics information system consists of the database establishment,network structure and logic structure design.The collection,storage,processing,transmission and output functions of the reverse logistics information system were discussed in the thesis.Eventually,it established seven modules for the reverse logistics information system including the system management module,oriented module,returning goods processing module,reverse transportation management module,information sharing module,statistical analysis module and cost control module.展开更多
The purpose of this paper is to present a general universal formula for <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;&...The purpose of this paper is to present a general universal formula for <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;">-variate survival functions for arbitrary <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> = 2, 3, <span style="font-family:;" "=""><span style="font-family:Verdana;">...<span style="font-family:Verdana;">, given all the univariate marginal survival functions. This universal form of <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;">-variate probability distributions was obtained by means of “dependence functions” named “joiners” in the text. These joiners determine all the involved stochastic dependencies between the underlying random variables. However, in order that the presented formula (the form) represents a legitimate survival function, some necessary and sufficient conditions for the joiners had to be found. Basically, finding those conditions is the main task of this paper. This task was successfully performed for the case <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"> = 2 and the main results for the case <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"> = 3 were formulated as Theorem 1 and Theorem 2 in Section 4. Nevertheless, the hypothetical conditions valid for the general <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"> ≥ 4 case were also formulated in Section 3 as the (very convincing) Hypothesis. As for the sufficient conditions for both the <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:;" "=""><span style="font-family:Verdana;"> = 3 and <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"> ≥ 4 cases, the full generality was not achieved since two restrictions were imposed. Firstly, we limited ourselves to the, defined in the text, “continuous cases” (when the corresponding joint density exists and is continuous), and secondly we consider positive stochastic dependencies only. Nevertheless, the class of the <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;">-variate distributions which can be constructed is very wide. The presented method of construction by means of joiners can be considered competitive to the <span style="font-family:Verdana;"><span style="font-family:Verdana;">copula<span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> methodology. As it is suggested in the paper the possibility of building a common theory of both copulae and joiners is quite possible, and the joiners may play the role of tools within the theory of copulae, and vice versa copulae may, for example, be used for finding proper joiners. Another independent feature of the joiners methodology is the possibility of constructing many new stochastic processes including stationary and Markovian.展开更多
This thesis intends to use the symbolic structure of cigar to analyze the extract Blackmail from Arthur Hailey's short novel Hotel.The function of cigar in Blackmail can be concluded as a) constructive clue of the...This thesis intends to use the symbolic structure of cigar to analyze the extract Blackmail from Arthur Hailey's short novel Hotel.The function of cigar in Blackmail can be concluded as a) constructive clue of the plot progression,b) genteel carrier in making up characters.Rotating around the constructive clue,cigar,the writer of this thesis breaks down the whole story into seven parts,i.e.mystical entrance,prelude,crossfire,preparatory victory,absolute superiority,negotiation (absence of cigar) and discard.As to cigar's function of making up character,this thesis examines it from four main social and historical aspects,i.e.the origin of cigar in history,the social token of cigar,the complicated approaches of using cigar,and the historical stereotypes related to cigar smoking.展开更多
Recently,the field of rural vitalization has received extensive research attention.However,only few studies have proposed an approach to rural vitalization from the coupling perspective of township construction and th...Recently,the field of rural vitalization has received extensive research attention.However,only few studies have proposed an approach to rural vitalization from the coupling perspective of township construction and the resource environment.Taking Jiangsu Province of China as the study area,we constructed index systems of township construction function types and resource environments.Based on 875 township study units in Jiangsu,we characterized the township construction function type and resource environment and analyzed the dynamic process of their coupling from 2005 to 2017.The results are as follows:1)the townships of planting and breeding types in Jiangsu were mainly distributed in northern and central Jiangsu;the townships of business travel,industry,and integrated types were mainly distributed in southern Jiangsu;and the townships of ecological type were irregularly distributed throughout Jiangsu.2)Resource environment factors and township construction function types in Jiangsu clustered based on their location with some overlap.3)Spatial variability in the degree of coupling level between township construction and the resource environment in Jiangsu was not apparent,and low coupling levels accounted for most of the study units.The sum of the number of medium and high coupling townships in southern,central,and northern Jiangsu was roughly equal,and the coupling level between township construction and the resource environment in southern Jiangsu evolved remained unchanged,whereas that in the central and northern Jiangsu became imbalanced.4)In Jiangsu,township construction was mainly constrained by water resources,and the constraint parameters gradually increase.Large variability in resource environment constraint was observed in northern,central,and southern Jiangsu for different township construction function types.Based on these findings,we proposed the implementation of targeted rural vitalization strategies.展开更多
目的:研究表明,重复经颅磁刺激和经颅直流电刺激对改善脑瘫患儿粗大运动功能具有积极作用。采用网状Meta分析方法评价重复经颅磁刺激和经颅直流电刺激对脑瘫患儿下肢运动功能及步态改善的临床疗效。方法:检索中国知网、万方、维普、Sino...目的:研究表明,重复经颅磁刺激和经颅直流电刺激对改善脑瘫患儿粗大运动功能具有积极作用。采用网状Meta分析方法评价重复经颅磁刺激和经颅直流电刺激对脑瘫患儿下肢运动功能及步态改善的临床疗效。方法:检索中国知网、万方、维普、SinoMed、PubMed、Web of Science、Medline数据库,搜索关于重复经颅磁刺激与经颅直流电刺激改善脑瘫患儿下肢运动功能及步态的随机对照试验,检索时限均为数据库建库至2024-10-05。筛选文献、提取资料并评价纳入研究的偏倚风险,采用Stata 15.0软件进行网状Meta分析,使用GRADE证据分级系统进行质量评价。结果:最终纳入19篇研究,涉及常规治疗、高频重复经颅磁刺激、低频重复经颅磁刺激、阳极经颅直流电刺激4种治疗方案。网状Meta分析结果显示,与常规治疗相比,低频重复经颅磁刺激改善脑瘫患儿粗大运动功能方面的疗效最佳[MD=9.48,95%CI(6.61,12.34),P<0.05],在缓解痉挛方面,高频重复经颅磁刺激的疗效最佳[MD=-0.63,95%CI(-1.72,0.45),P<0.05],经颅直流电刺激改善脑瘫患儿踝关节活动度和步速方面的疗效最佳[MD=2.27,95%CI(1.37,3.17),P<0.05;MD=0.11,95%CI(0.05,0.17),P<0.05]。结论:现有临床证据表明,对于脑瘫患儿,在改善下肢粗大运动功能方面,低频重复经颅磁刺激展现出最佳疗效;对于降低肌痉挛程度,高频重复经颅磁刺激的效果更为显著;在步态改善方面,经颅直流电刺激则表现出明显优势。展开更多
The paper applies Cobb-Douglas Production Function and Solow-Swan Model to constructing the calculation model of the contribution rate of cultivated land occupation by construction （CLOC） to China＇s economic growth...The paper applies Cobb-Douglas Production Function and Solow-Swan Model to constructing the calculation model of the contribution rate of cultivated land occupation by construction （CLOC） to China＇s economic growth,and analyzes the contribution change of CLOC to China＇s economic growth qualitatively and quantitatively.The main conclusions are as follows：1） From 1989 to 2007,the contribution rates of capital,labor,and CLOC to China＇s economic growth were 45.76%,8.47%,and 6.19% respectively.2） From the period 1989-1996 to the period 1997-2007 the contribution rate of CLOC to China＇s economic growth increased from 5.40% to 5.87%.The degree of contribution was enhanced significantly.3） The contribution of CLOC to China＇s economic growth had a spatial distribution characteristic that the contribution rate of eastern coastal regions was the highest,that of central regions came second,and that of western regions the lowest.The paper indicates that in order to enhance the contribution of CLOC to China＇s economic growth,some relevant economic and administrative measures might be taken,and land might be used intensively and economically to increase land economic density.The cost of promoting gross domestic product （GDP） growth might be reduced as much as possible to achieve higher GDP growth and lower land resource consumption.展开更多
Discipline construction is development core of a professional research institute. The paper describes function,guiding ideology,and construction of discipline construction,based on giving a national-level professional...Discipline construction is development core of a professional research institute. The paper describes function,guiding ideology,and construction of discipline construction,based on giving a national-level professional research institute directly under the Ministry of Science and Technology,as an example. Furthermore,according to current situation of discipline construction in a professional research institute,the paper discusses development ideas of discipline construction. The final goal of the paper is to provide basis and reference for reinforcing discipline construction of professional research institutes.展开更多
<div style="text-align:justify;"> <span style="font-family:Verdana;">The rumen microbiome plays an essential role in ruminant physiology, nutrition and pathology as well as host immunit...<div style="text-align:justify;"> <span style="font-family:Verdana;">The rumen microbiome plays an essential role in ruminant physiology, nutrition and pathology as well as host immunity. A better understanding of rumen</span><span style="font-family:Verdana;"> microbial processes and identification of which populations are responsible for specific functions within the rumen microbiome will lead to better management and sustainable utilization of the available feed base while maintaining a low environmental impact. Recent advance in the culture independent method of microbiology such as metagenomics, unravels potentially the rumen microbial process. Th</span><span style="font-family:Verdana;">ere are two basic types of metagenomics studies: Sequence-based and function-based metagenomics. Sequence-based metagenomics involves sequencing and analysis of DNA from environmental samples. Its purpose is to assemble genomes, identify genes, find complete metabolic pathways, and compare organisms of different communities. Whereas functional metagenomics is the study of the collective genome of a microbial community by expressing it in a foreign host usually </span><i><span style="font-family:Verdana;">Escherichia</span></i> <i><span style="font-family:Verdana;">coli</span></i><span style="font-family:Verdana;"> (</span><i><span style="font-family:Verdana;">E.</span></i> <i><span style="font-family:Verdana;">coli</span></i><span style="font-family:Verdana;">)</span><i><span style="font-family:Verdana;">.</span></i><span style="font-family:Verdana;"> It is a promising approach unearthing novel enzymes even from yet to culture rumen microbiota. Further advances in the screening techniques promise vast opportunities to rumen microbiologists, and animal nutritionist. The identification of novel enzyme through functional metagenomics consists of three parts: rumen sample collection;DNA library construction and screening of individual clone. Functional metagenomics was successfully applied to identify different antibiotics, hydrolytic enzymes, antibiotic resistance genes, and many other functions;moreover, it allowed characterization of genes encoding enzymes with a particular activity, which represents completely novel sequence. There are a number of outputs from functionally screened rumen product such as carbohydrate active enzymes (CAZymes) that can break down plant cell walls. Company involved commercialization of metagenomics research such as Syngenta, Genencor International, BRAIN etc., has produced many biological molecules of commercial interest. The aim of this paper is to elucidate functional metagenomics, from rumen environment and its potential for commercial purpose.</span> </div>展开更多
In this paper, the definition of multl-output partially Bent functions is presented and some properties are discussed. Then the relationship between multi-output partially Bent functions and multi-output Bent function...In this paper, the definition of multl-output partially Bent functions is presented and some properties are discussed. Then the relationship between multi-output partially Bent functions and multi-output Bent functions is given in Theorem 4, which includes Walsh spectrum expression and function expression. This shows that multi-output partially Bent functions and multi-output Bent functions can define each other in principle. So we obtain the general method to construct multi-output partially Bent functions from multi-output Bent functions.展开更多
In this paper, the properties of the exponential Radon transform and its dual are discussed. Furthermore, the analytical reconstruction formulas of exponential Radon transform with two different methods are developed.
This paper firstly evaluated ecological service functions of ecological public welfare forest in Hainan Province. Then,it introduced value structure and existing problems of ecological service functions. Focusing on o...This paper firstly evaluated ecological service functions of ecological public welfare forest in Hainan Province. Then,it introduced value structure and existing problems of ecological service functions. Focusing on optimization and adjustment of scale and distribution of ecological public welfare forest,it came up with recommendations for construction and management of ecological public welfare forest in Hainan Province.展开更多
Through investigating ecological service functions of public welfare forest in Hainan Province, this paper explored type constitution and problems of its ecological service functional value, optimization of its scale ...Through investigating ecological service functions of public welfare forest in Hainan Province, this paper explored type constitution and problems of its ecological service functional value, optimization of its scale and layout, promoted effective protection and benign development, and proposed strategies for the construction and management of public welfare forest in Hainan Province.展开更多
文摘We establish the construction theory of function based upon a local field Kp as underlying space. By virture of the concept of pseudo-differential operator, we introduce ＂fractal calculus＂ （or, p-type calculus, or, Gibbs-Butzer calculus）. Then, show the Jackson direct approximation theorems, Bermstein inverse approximation theorems and the equivalent approximation theorems for compact group D（C Kp） and locally compact group Kp^＋-（= Kp）, so that the foundation of construction theory of function on local fields is established. Moreover, the Jackson type, Bernstein type, and equivalent approximation theorems on the HOlder-type space C^σ（Kp）, σ 〉0, are proved; then the equivalent approximation theorem on Sobolev-type space Wr（Kp）, σ≥0, 1≤r 〈∞, is shown.
文摘Based on sine and cosine functions, the compactly supported orthogonal wavelet filter coefficients with arbitrary length are constructed for the first time. When N = 2(k-1) and N = 2k, the unified analytic constructions of orthogonal wavelet filters are put forward, respectively. The famous Daubechies filter and some other well-known wavelet filters are tested by the proposed novel method which is very useful for wavelet theory research and many application areas such as pattern recognition.
基金Course Construction of Customs Practice,China(No.z201308003)
文摘Reverse logistics are playing more and more important role with the development of competition and the social responsibility of enterprises.It could be divided into commission acceptance,recycling and returned goods handling.Reverse logistics information system consists of the database establishment,network structure and logic structure design.The collection,storage,processing,transmission and output functions of the reverse logistics information system were discussed in the thesis.Eventually,it established seven modules for the reverse logistics information system including the system management module,oriented module,returning goods processing module,reverse transportation management module,information sharing module,statistical analysis module and cost control module.
文摘The purpose of this paper is to present a general universal formula for <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;">-variate survival functions for arbitrary <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> = 2, 3, <span style="font-family:;" "=""><span style="font-family:Verdana;">...<span style="font-family:Verdana;">, given all the univariate marginal survival functions. This universal form of <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;">-variate probability distributions was obtained by means of “dependence functions” named “joiners” in the text. These joiners determine all the involved stochastic dependencies between the underlying random variables. However, in order that the presented formula (the form) represents a legitimate survival function, some necessary and sufficient conditions for the joiners had to be found. Basically, finding those conditions is the main task of this paper. This task was successfully performed for the case <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"> = 2 and the main results for the case <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"> = 3 were formulated as Theorem 1 and Theorem 2 in Section 4. Nevertheless, the hypothetical conditions valid for the general <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"> ≥ 4 case were also formulated in Section 3 as the (very convincing) Hypothesis. As for the sufficient conditions for both the <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:;" "=""><span style="font-family:Verdana;"> = 3 and <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;"> ≥ 4 cases, the full generality was not achieved since two restrictions were imposed. Firstly, we limited ourselves to the, defined in the text, “continuous cases” (when the corresponding joint density exists and is continuous), and secondly we consider positive stochastic dependencies only. Nevertheless, the class of the <span style="font-family:Verdana;"><span style="font-family:Verdana;">k<span style="font-family:Verdana;"><span style="font-family:Verdana;">-variate distributions which can be constructed is very wide. The presented method of construction by means of joiners can be considered competitive to the <span style="font-family:Verdana;"><span style="font-family:Verdana;">copula<span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> methodology. As it is suggested in the paper the possibility of building a common theory of both copulae and joiners is quite possible, and the joiners may play the role of tools within the theory of copulae, and vice versa copulae may, for example, be used for finding proper joiners. Another independent feature of the joiners methodology is the possibility of constructing many new stochastic processes including stationary and Markovian.
文摘This thesis intends to use the symbolic structure of cigar to analyze the extract Blackmail from Arthur Hailey's short novel Hotel.The function of cigar in Blackmail can be concluded as a) constructive clue of the plot progression,b) genteel carrier in making up characters.Rotating around the constructive clue,cigar,the writer of this thesis breaks down the whole story into seven parts,i.e.mystical entrance,prelude,crossfire,preparatory victory,absolute superiority,negotiation (absence of cigar) and discard.As to cigar's function of making up character,this thesis examines it from four main social and historical aspects,i.e.the origin of cigar in history,the social token of cigar,the complicated approaches of using cigar,and the historical stereotypes related to cigar smoking.
基金Under the auspices of National Key R&D Program of China(No.2018YFD1100100)。
文摘Recently,the field of rural vitalization has received extensive research attention.However,only few studies have proposed an approach to rural vitalization from the coupling perspective of township construction and the resource environment.Taking Jiangsu Province of China as the study area,we constructed index systems of township construction function types and resource environments.Based on 875 township study units in Jiangsu,we characterized the township construction function type and resource environment and analyzed the dynamic process of their coupling from 2005 to 2017.The results are as follows:1)the townships of planting and breeding types in Jiangsu were mainly distributed in northern and central Jiangsu;the townships of business travel,industry,and integrated types were mainly distributed in southern Jiangsu;and the townships of ecological type were irregularly distributed throughout Jiangsu.2)Resource environment factors and township construction function types in Jiangsu clustered based on their location with some overlap.3)Spatial variability in the degree of coupling level between township construction and the resource environment in Jiangsu was not apparent,and low coupling levels accounted for most of the study units.The sum of the number of medium and high coupling townships in southern,central,and northern Jiangsu was roughly equal,and the coupling level between township construction and the resource environment in southern Jiangsu evolved remained unchanged,whereas that in the central and northern Jiangsu became imbalanced.4)In Jiangsu,township construction was mainly constrained by water resources,and the constraint parameters gradually increase.Large variability in resource environment constraint was observed in northern,central,and southern Jiangsu for different township construction function types.Based on these findings,we proposed the implementation of targeted rural vitalization strategies.
文摘目的:研究表明,重复经颅磁刺激和经颅直流电刺激对改善脑瘫患儿粗大运动功能具有积极作用。采用网状Meta分析方法评价重复经颅磁刺激和经颅直流电刺激对脑瘫患儿下肢运动功能及步态改善的临床疗效。方法:检索中国知网、万方、维普、SinoMed、PubMed、Web of Science、Medline数据库,搜索关于重复经颅磁刺激与经颅直流电刺激改善脑瘫患儿下肢运动功能及步态的随机对照试验,检索时限均为数据库建库至2024-10-05。筛选文献、提取资料并评价纳入研究的偏倚风险,采用Stata 15.0软件进行网状Meta分析,使用GRADE证据分级系统进行质量评价。结果:最终纳入19篇研究,涉及常规治疗、高频重复经颅磁刺激、低频重复经颅磁刺激、阳极经颅直流电刺激4种治疗方案。网状Meta分析结果显示,与常规治疗相比,低频重复经颅磁刺激改善脑瘫患儿粗大运动功能方面的疗效最佳[MD=9.48,95%CI(6.61,12.34),P<0.05],在缓解痉挛方面,高频重复经颅磁刺激的疗效最佳[MD=-0.63,95%CI(-1.72,0.45),P<0.05],经颅直流电刺激改善脑瘫患儿踝关节活动度和步速方面的疗效最佳[MD=2.27,95%CI(1.37,3.17),P<0.05;MD=0.11,95%CI(0.05,0.17),P<0.05]。结论:现有临床证据表明,对于脑瘫患儿,在改善下肢粗大运动功能方面,低频重复经颅磁刺激展现出最佳疗效;对于降低肌痉挛程度,高频重复经颅磁刺激的效果更为显著;在步态改善方面,经颅直流电刺激则表现出明显优势。
基金National Natural Science Foundation of China, No. 40971107 Acknowledgements The authors would like to express their sincere thanks to Wang Zhen from Beijing Normal University for her invaluable help.
文摘The paper applies Cobb-Douglas Production Function and Solow-Swan Model to constructing the calculation model of the contribution rate of cultivated land occupation by construction （CLOC） to China＇s economic growth,and analyzes the contribution change of CLOC to China＇s economic growth qualitatively and quantitatively.The main conclusions are as follows：1） From 1989 to 2007,the contribution rates of capital,labor,and CLOC to China＇s economic growth were 45.76%,8.47%,and 6.19% respectively.2） From the period 1989-1996 to the period 1997-2007 the contribution rate of CLOC to China＇s economic growth increased from 5.40% to 5.87%.The degree of contribution was enhanced significantly.3） The contribution of CLOC to China＇s economic growth had a spatial distribution characteristic that the contribution rate of eastern coastal regions was the highest,that of central regions came second,and that of western regions the lowest.The paper indicates that in order to enhance the contribution of CLOC to China＇s economic growth,some relevant economic and administrative measures might be taken,and land might be used intensively and economically to increase land economic density.The cost of promoting gross domestic product （GDP） growth might be reduced as much as possible to achieve higher GDP growth and lower land resource consumption.
基金Supported by the Project of “Meteorological Science and Technology Development Strategy Research” of Chinese Meteorological Society
文摘Discipline construction is development core of a professional research institute. The paper describes function,guiding ideology,and construction of discipline construction,based on giving a national-level professional research institute directly under the Ministry of Science and Technology,as an example. Furthermore,according to current situation of discipline construction in a professional research institute,the paper discusses development ideas of discipline construction. The final goal of the paper is to provide basis and reference for reinforcing discipline construction of professional research institutes.
文摘<div style="text-align:justify;"> <span style="font-family:Verdana;">The rumen microbiome plays an essential role in ruminant physiology, nutrition and pathology as well as host immunity. A better understanding of rumen</span><span style="font-family:Verdana;"> microbial processes and identification of which populations are responsible for specific functions within the rumen microbiome will lead to better management and sustainable utilization of the available feed base while maintaining a low environmental impact. Recent advance in the culture independent method of microbiology such as metagenomics, unravels potentially the rumen microbial process. Th</span><span style="font-family:Verdana;">ere are two basic types of metagenomics studies: Sequence-based and function-based metagenomics. Sequence-based metagenomics involves sequencing and analysis of DNA from environmental samples. Its purpose is to assemble genomes, identify genes, find complete metabolic pathways, and compare organisms of different communities. Whereas functional metagenomics is the study of the collective genome of a microbial community by expressing it in a foreign host usually </span><i><span style="font-family:Verdana;">Escherichia</span></i> <i><span style="font-family:Verdana;">coli</span></i><span style="font-family:Verdana;"> (</span><i><span style="font-family:Verdana;">E.</span></i> <i><span style="font-family:Verdana;">coli</span></i><span style="font-family:Verdana;">)</span><i><span style="font-family:Verdana;">.</span></i><span style="font-family:Verdana;"> It is a promising approach unearthing novel enzymes even from yet to culture rumen microbiota. Further advances in the screening techniques promise vast opportunities to rumen microbiologists, and animal nutritionist. The identification of novel enzyme through functional metagenomics consists of three parts: rumen sample collection;DNA library construction and screening of individual clone. Functional metagenomics was successfully applied to identify different antibiotics, hydrolytic enzymes, antibiotic resistance genes, and many other functions;moreover, it allowed characterization of genes encoding enzymes with a particular activity, which represents completely novel sequence. There are a number of outputs from functionally screened rumen product such as carbohydrate active enzymes (CAZymes) that can break down plant cell walls. Company involved commercialization of metagenomics research such as Syngenta, Genencor International, BRAIN etc., has produced many biological molecules of commercial interest. The aim of this paper is to elucidate functional metagenomics, from rumen environment and its potential for commercial purpose.</span> </div>
基金Supported by State Key Laboratory of InformationSecurity Opening Foundation(01-02) the Doctorate Foundation ofInstitute of Information Engineering (YP20014401)HenanInno-vation Project for University Prominent Research Talents(2003KJCX008)
文摘In this paper, the definition of multl-output partially Bent functions is presented and some properties are discussed. Then the relationship between multi-output partially Bent functions and multi-output Bent functions is given in Theorem 4, which includes Walsh spectrum expression and function expression. This shows that multi-output partially Bent functions and multi-output Bent functions can define each other in principle. So we obtain the general method to construct multi-output partially Bent functions from multi-output Bent functions.
基金Supported by the National Natural Science Foundation of China (61271398)the Ningbo Natural Science Foundation (2011A610170)the Scientific Research Fund of Zhejiang Provincial Education Department(Y201016044)
文摘In this paper, the properties of the exponential Radon transform and its dual are discussed. Furthermore, the analytical reconstruction formulas of exponential Radon transform with two different methods are developed.
文摘This paper firstly evaluated ecological service functions of ecological public welfare forest in Hainan Province. Then,it introduced value structure and existing problems of ecological service functions. Focusing on optimization and adjustment of scale and distribution of ecological public welfare forest,it came up with recommendations for construction and management of ecological public welfare forest in Hainan Province.
文摘Through investigating ecological service functions of public welfare forest in Hainan Province, this paper explored type constitution and problems of its ecological service functional value, optimization of its scale and layout, promoted effective protection and benign development, and proposed strategies for the construction and management of public welfare forest in Hainan Province.
