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Relative Index and the Pairing between the Relative K-Homology and K-Colomogy
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作者 Zhou Mai Zhou Mai Department of Mathematics Nankai University Tianjin,300071 China 《Acta Mathematica Sinica,English Series》 SCIE CSCD 1996年第2期156-161,共6页
In this paper we disscus the relative index for the Atiyah-Patodi-Singer type elliptic boundary value problems,as an application we give a new approach to the pairing between the relative K-homology and K-cohomology.
关键词 relative index Boundary value problem K-homology K-cohomology
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Analysis on Factors Causing Project Delays in Road and Highways Sector in India Using Relative Ranking Index Technique
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作者 Siddesh K.Pai Neeraj Anand Ankur Mittal 《Journal of Construction Research》 2021年第2期43-48,共6页
On-time completion of road infrastructure projects is a critical goal.When projects were not completed on schedule and real construction progress is slower than expected,the inconvenience and disruption to business ac... On-time completion of road infrastructure projects is a critical goal.When projects were not completed on schedule and real construction progress is slower than expected,the inconvenience and disruption to business access increases.On time completion is linked to economic and social welfare,as well as safety.Construction delays continue to be a typical occurrence,despite the need of prompt completion.A literature study is conducted in this context in order to learn more about the causes and factors that contribute to delays.Following a thorough review of the literature,it was determined that a questionnaire survey is the most effective and trustworthy way for gathering information about the causes and quantifying delays caused by emergent factors.The Relative Importance Index(RII)method was used to analyze the data,and the reasons for the delay were prioritized according to their importance.This study focuses on the emergent concerns/causes and reasons of concern in road infrastructure projects,as well as how to priorities these issues sequentially during the planning stage.This study survey can assist construction companies doing business in India in understanding the essential or sensitive issues that require special attention in order to conduct their businesses smoothly in this country while employing appropriate project management practices. 展开更多
关键词 relative importance index Issues of concern Delay factors Road Construction projects
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Relative active tectonics evaluation using geomorphic and drainage indices, in Dadra and Nagar Haveli, western India 被引量:3
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作者 Naveen Kumar Rakesh K.Dumka +1 位作者 Kapil Mohan Sumer Chopra 《Geodesy and Geodynamics》 CSCD 2022年第3期219-229,共11页
The present study area,Dadra and Nagar Haveli,contains several lineaments and traces of active faults.The various aspect of the geomo rphic analysis,i.e.,stream length(SL) gradient,hypsometric integral(HI),basin shape... The present study area,Dadra and Nagar Haveli,contains several lineaments and traces of active faults.The various aspect of the geomo rphic analysis,i.e.,stream length(SL) gradient,hypsometric integral(HI),basin shape(BS),valley floor(VF),have been applied to evaluate the relative index of active tectonics(RIAT) of the Damanganga watershed.The high and low zones of tectonic activity have been identified based on the geomorphic analysis of the watershed.After evaluation of all indices,three classes,class IIhigh(1.3 ≤RIAT <1.5),class Ⅲ-moderate(1.5 ≤RIAT <1.8),and class Ⅳ-low(1.8 ≤RIAT),have been obtained to outline the degree/gradation of comparative tectonic activities in the study area.The appraised outcome of the RIAT dispersal is also well reinforced by the geomorphic evidence in the field.The collective outcomes of geomorphic evidence,such as stream deflection and analysis of lineament,deflection of streams,and geomorphic indices,conceal that the Damanganga watershed is affected by tectonic activity. 展开更多
关键词 Active tectonics Geomorphic indices relative index of active tectonics(RIAT) Drainage indices
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Geomorphic indices and relative tectonic uplift in the Guerrero sector of the Mexican forearc 被引量:7
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作者 Krzysztof Gaidzik María Teresa Ramírez-Herrera 《Geoscience Frontiers》 SCIE CAS CSCD 2017年第4期885-902,共18页
Tectonically active areas,such as forearc regions,commonly show contrasting relief,differential tectonic uplift,variations in erosion rates,in river incision,and in channel gradient produced by ongoing tectonic deform... Tectonically active areas,such as forearc regions,commonly show contrasting relief,differential tectonic uplift,variations in erosion rates,in river incision,and in channel gradient produced by ongoing tectonic deformation.Thus,information on the tectonic activity of a defined area could be derived via landscape analysis.This study uses topography and geomorphic indices to extract signals of ongoing tectonic deformation along the Mexican subduction forearc within the Guerrero sector.For this purpose,we use field data,topographical data,knickpoints,the ratio of volume to area(Rva).the stream-length gradient index(St),and the normalized channel steepness index(k_(sn)).The results of the applied landscape analysis reveal considerable variations in relief,topography and geomorphic indices values along the Guerrero sector of the Mexican subduction zone.We argue that the reported differences are indicative of tectonic deformation and of variations in relative tectonic uplift along the studied forearc.A significant drop from central and eastern parts of the study area towards the west in values of R_(VA)(from ~500 to^300),St(from ~500 to ca.400),maximum St(from ~1500-2500 to ~ 1000) and k_(sn)(from ~150 to ~100) denotes a decrease in relative tectonic uplift in the same direction.We suggest that applied geomorphic indices values and forearc topography are independent of climate and lithology.Actual mechanisms responsible for the observed variations and inferred changes in relative forearc tectonic uplift call for further studies that explain the physical processes that control the forearc along strike uplift variations and that determine the rates of uplift.The proposed methodology and results obtained through this study could prove useful to scientists who study the geomorphology of forearc regions and active subduction zones. 展开更多
关键词 relative tectonic uplift Forearc Active tectonics Geomorphic index Drainage network Mexican subduction zone
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The Existence of Solutions for a Class of Schr¨odinger Equations via Morse Index Theory
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作者 LI Jia-yang WANG Qi 《Chinese Quarterly Journal of Mathematics》 2022年第3期274-280,共7页
In this paper,with the relative Morse index,we will study the existence of solutions of(1.1)under the assumptions that V satisfies some weaker conditions than those in[2].
关键词 relative Morse index Morse theory Schr¨odinger equations
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Genetic analysis of morphological index and its related taxonomic traits for classification of indica 被引量:1
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《Chinese Rice Research Newsletter》 1999年第3期1-2,共2页
The Cheng index distinguishes indica andjaponica rice based on six taxonomic traits.This index has been widely used for classifi- cation of indica and japonica varieties in China.In this study,a double haploid(DH)popu... The Cheng index distinguishes indica andjaponica rice based on six taxonomic traits.This index has been widely used for classifi- cation of indica and japonica varieties in China.In this study,a double haploid(DH)popula-tion derived from anther culture of ZYQ8/JX17 F,a typical inter-subspecies hybrid,was used to investigate the six taxonomictraits,i.e.leaf hairiness(LH),color of hullwhen heading(CHH),hairiness of hull(HH),length of the first and second panicle internode(LPI),length/width of grain(L/W),andphenol reaction(PH).The morphological in- dex(MI)was also calculated.Based on themolecular linkage map constructed from this 展开更多
关键词 LPI MI Genetic analysis of morphological index and its related taxonomic traits for classification of indica length
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Science Citation Index Expanded Journal Lists related to neurosciences & neuroimaging
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《Neural Regeneration Research》 SCIE CAS CSCD 2011年第17期1346-1360,共15页
SCIENCE CITATION INDEX EXPANDED-NEUROSCIENCES-JOURNAL LIST Total journals: 245 1. ACS CHEMICAL NEUROSCIENCE Monthly ISSN: 1948-7193 AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, USA, DC, 20036 · Science Cita... SCIENCE CITATION INDEX EXPANDED-NEUROSCIENCES-JOURNAL LIST Total journals: 245 1. ACS CHEMICAL NEUROSCIENCE Monthly ISSN: 1948-7193 AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, USA, DC, 20036 · Science Citation Index Expanded · BIOSIS Previews 展开更多
关键词 BIOSIS NEUROIMAGING ISSN ACTA Science Citation index Expanded Journal Lists related to neurosciences
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Relative equivariant coarse index and relative L^(2)-index
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作者 Xiaoman Chen Yanlin Liu Dapeng Zhou 《Science China Mathematics》 SCIE CSCD 2023年第7期1449-1472,共24页
In this paper,we define a relative equivariant coarse index for proper actions and a relative L^(2)-index.We derive a relative equivariant coarse index theorem connecting the relative equivariant coarse index with the... In this paper,we define a relative equivariant coarse index for proper actions and a relative L^(2)-index.We derive a relative equivariant coarse index theorem connecting the relative equivariant coarse index with the localized equivariant coarse index.Furthermore,we present a calculation formula on the relative L^(2)-index and provide a relative L^(2)-index theorem.Our work is an expansion of the relative index theory which reflects the difference between two manifolds. 展开更多
关键词 relative equivariant coarse index relative L^(2)-index regular cover Roe algebra
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Advantage of populous countries in the trends of innovation efficiency
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作者 胡淡淡 方学进 韩筱璞 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第6期65-73,共9页
A flurry of studies indicates that population size has a positive effect on innovation,however,cross-country empirical evidence remains sparse.In this paper,we add to the literature by investigating the relationship b... A flurry of studies indicates that population size has a positive effect on innovation,however,cross-country empirical evidence remains sparse.In this paper,we add to the literature by investigating the relationship between population size and innovation efficiency at the country level through constructing three relative indexes based on the datasets of patent applications and Research and Development(R&D)investment.Different from previous studies based on absolute innovation indicators,the relative indexes can reflect the core innovation efficiency of economies by excluding the impact from the difference of economic development level,with a view putting all economies into a comparable standard framework.For all of the three relative indexes,their long-term trends show significant correlations with population size,and the economy with a larger population usually has better and stable performance on the trends of innovation efficiency.In addition,we find that there is a critical population size,over which the economy would be more likely to have a spontaneous improvement on innovation efficiency.This study provides direct evidence in supporting the population size advantage on the trends of innovation efficiency at the economy level and provides new insight to understand the rapid development of innovation in a few populous countries. 展开更多
关键词 innovation efficiency population size the relative indexes
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密码子优化提高多粘类芽孢杆菌β-葡萄糖苷酶异源表达量 被引量:6
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作者 陈荫楠 刘震 +1 位作者 石贤爱 王祖鑫 《中国生物化学与分子生物学报》 CAS CSCD 北大核心 2017年第4期414-422,共9页
多粘类芽孢杆菌BN1株β-葡萄糖苷酶A的基因中含有很多大肠杆菌的稀有密码子,这限制了其在大肠杆菌中的表达。本研究选择部分稀有密码子同义替换为大肠杆菌的偏爱密码子,结果得到了表达量显著提高的基因型。经过对β-葡萄糖苷酶A基因各... 多粘类芽孢杆菌BN1株β-葡萄糖苷酶A的基因中含有很多大肠杆菌的稀有密码子,这限制了其在大肠杆菌中的表达。本研究选择部分稀有密码子同义替换为大肠杆菌的偏爱密码子,结果得到了表达量显著提高的基因型。经过对β-葡萄糖苷酶A基因各密码子使用频率的分析,选出2种密码子:大肠杆菌使用频率极低的密码子(Ⅰ型)、大肠杆菌使用频率一般但酶基因中频繁出现的密码子(Ⅱ型)。通过定点突变,这些密码子均被替换为宿主细胞使用频率最高的同义密码子。研究结果表明,I型单密码子替换可以使酶的表达量提高3~6倍,II型单密码子替换可以使酶的表达量提高3~4倍。最终,通过组合对提高该酶表达量贡献较大的突变,得到一个表达量提高13倍的基因型(WT-13)。本研究显著提高了β-葡萄糖苷酶A在大肠杆菌宿主中的异源表达水平,为酶的工业化应用奠定了基础。本研究将Escherichia coli BL21(DE3)本源表达的β-半乳糖苷酶选为内参蛋白质,提出相对表达量指数的概念,为同类酶在E.coli BL21(DE3)表达水平的表征提供了参考。 展开更多
关键词 Β-葡萄糖苷酶 密码子偏性 定点突变 同义替换 相对表达量指数
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Combining Ability and Genetic Effects of Germination Traits of Brassica napus L.Under Waterlogging Stress Condition 被引量:5
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作者 CHENG Yong GU Min +3 位作者 CONG Ye ZOU Chong-shun ZHANG Xue-kun WANG Han-zhong 《Agricultural Sciences in China》 CAS CSCD 2010年第7期951-957,共7页
Cross combinations from six rapeseed cultivars and lines were evaluated under waterlogging stress condition in order to understand the genetic mechanism of waterlogging tolerance of Brassica napus L.and provide reason... Cross combinations from six rapeseed cultivars and lines were evaluated under waterlogging stress condition in order to understand the genetic mechanism of waterlogging tolerance of Brassica napus L.and provide reasonable improvement programs.There were six germination traits investigated on combining ability and heritability using complete diallel crossing method designed for 30 combinations from those six cultivars and lines.The traits included relative root length,stem length,fresh weight per plant,survival rate,electrical conductivity,and vigor index.After flooding treatment,the six traits of parents and F1 were analyzed.The general combining ability(GCA) and special combining ability(SCA) of germination traits were analyzed using Griffing I method.Among 30 cross combinations,the GCA was significantly different among six waterlogging resistance traits.The SCA of these traits was significantly different except the SCA of electrical conductivity.As a representative trait of waterlogging tolerance in rapeseed,relative vigor index had the highest narrow heritability and relatively low broad heritability.The cultivars Zhongshuang 9 and P79 had higher tolerance potential to waterlogging stress.It can be concluded that combining ability and genetic effects of relative vigor index during germination stage could be used to identify the waterlogging tolerance of rapeseed in breeding program. 展开更多
关键词 Brassica napus L. relative vigor index waterlogging tolerance germination trait combining ability diallel crossing
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Evaluating the Health Risks of Pneumonia from Airborne Bacterial Communities Using 16S rDNA Sequences of Pneumonia-related Pathogens 被引量:2
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作者 GUO Jian Guo KONG Qi +2 位作者 LIU Ce KANG Tai Sheng QIN Chuan 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2021年第4期265-271,共7页
Objective Airborne microbial communities include a significant number of uncultured and poorly characterized bacteria.No effective method currently exists to evaluate the health risks of such complex bacterial populat... Objective Airborne microbial communities include a significant number of uncultured and poorly characterized bacteria.No effective method currently exists to evaluate the health risks of such complex bacterial populations,particularly for pneumonia.Methods We developed a method to evaluate risks from airborne microorganisms,guided by the principle that closer evolutionary relationships reflect similar biological characteristics,and thus used16 S rDNA sequences of 10 common pneumonia-related bacterial pathogens.We calculated a risk of breath-related(Rbr)index of airborne bacterial communities and verified effectiveness with artificial flora and a clinical project.Results We suggested applying Rbr80 to evaluate the health risks of airborne bacterial communities that comprise 80% of dominant operational taxonomic units(OTUs).The feasibility of Rbr80 was confirmed by artificial flora and by pneumonia data from a hospital.A high Rbr80 value indicated a high risk of pneumonia from airborne bacterial communities.Conclusion Rbr80 is an effective index to evaluate the pneumonia-associated risk from airborne bacteria.Values of Rbr80 greater than 15.40 are considered high risk. 展开更多
关键词 Airborne bacteria The risk of breath related index(Rbr) PNEUMONIA Health risk
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Influence of form and quantity of chromium on the development and survival of two silkworm(Bombyx mori L.)races 被引量:1
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作者 FrederickB.Tucker WANGKai-xiong +1 位作者 LUShun-lin XULi-jun 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2003年第6期744-748,共5页
Growth inhibitory activity has proven important in Qiufeng×Baiyu and Qingsong×Haoyue silkworm larvae. The consumption of mulberry leaves was reduced in both silkworm races while Qiufeng×Baiyu larvae s... Growth inhibitory activity has proven important in Qiufeng×Baiyu and Qingsong×Haoyue silkworm larvae. The consumption of mulberry leaves was reduced in both silkworm races while Qiufeng×Baiyu larvae showed the higher reduction in leaf consumption. From the results obtained, it was revealed that even at low concentrations of 400 mg/L of either Cr(Ⅲ) or Cr(Ⅵ) ions, growth of Qiufeng × Baiyu and Qingsong × Haoyue was significantly depressed. Depression in relative growth index(RGI) and high death rate in both silkworm races indicated that the different concentrations of the two ions used caused their growth inhibitions. Through linear regression analysis, the EC 50 (concentration of the compound that caused 50% reduction) was interpolated for both tested compounds. EC 50 (mg/L) of Cr (Ⅲ) ions in Qiufeng × Baiyu and Qingsong × Haoyue were 800 and 600 respectively. EC 50 (mg/L) of Cr(Ⅵ) ions in Qiufeng × Baiyu and Qingsong × Haoyue was 600 and 316 respectively. According to the analysis of relative growth index, and an analysis of linear regression technique for measuring the growth of the silkworm races, it was indicated that the form of Cr affected growth rates, growth inhibition responses of the larvae, and toxicological effects. Thus, form and quantity of Cr accumulating in silkworms reared with contaminated leaves are likely to influence their population dynamics. 展开更多
关键词 CHROMIUM relative growth index antifeedant activity BIOASSAY
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NONTRIVIAL SOLUTIONS FOR SEMILINEAR SCHRDINGER EQUATIONS 被引量:1
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作者 刘芳 杨健夫 《Acta Mathematica Scientia》 SCIE CSCD 2009年第5期1405-1420,共16页
The authors prove the existence of nontrivial solutions for the SchrSdinger equation -△u + V(x)u =λf(x, u) in R^N, where f is superlinear, subcritical and critical at infinity, respectively, V is periodic.
关键词 SchrSdinger equation the relative Morse index minimax method
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High-resolution remote sensing data can predict household poverty in pastoral areas,Inner Mongolia,China 被引量:1
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作者 Peng Han Qing Zhang +1 位作者 Yanyun Zhao Frank Yonghong Li 《Geography and Sustainability》 2021年第4期254-263,共10页
The accurate prediction of poverty is critical to efforts of poverty reduction,and high-resolution remote sensing(HRRS)data have shown great promise for facilitating such prediction.Accordingly,the present study used ... The accurate prediction of poverty is critical to efforts of poverty reduction,and high-resolution remote sensing(HRRS)data have shown great promise for facilitating such prediction.Accordingly,the present study used HRRS with 1 m resolution and 238 households data to evaluate the utility and optimal scale of HRRS data for predicting household poverty in a grassland region of Inner Mongolia,China.The prediction of household poverty was improved by using remote sensing indicators at multiple scales,instead of indicators at a single scale,and a model that combined indicators from four scales(building land,household,neighborhood,and regional)provided the most accurate prediction of household poverty,with testing and training accuracies of 48.57%and 70.83%,respectively.Furthermore,building area was the most efficient indicator of household poverty.When compared to conducting household surveys,the analysis of HRRS data is a cheaper and more time-efficient method for predicting household poverty and,in this case study,it reduced study time and cost by about 75%and 90%,respectively.This study provides the first evaluation of HRRS data for the prediction of household poverty in pastoral areas and thus provides technical support for the identification of poverty in pastoral areas around the world. 展开更多
关键词 Weighted relative wealth index Classification tree Inner Mongolia grassland MULTI-SCALE
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Program evaluation and its application to equipment based on super-efficiency DEA and gray relation projection method 被引量:4
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作者 Linbing Tang Dong Guo +1 位作者 Jie Wu Qingmei Tan 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2014年第6期1037-1042,共6页
For the gray attributes of the equipment program and its difficulty to carry out the quantitative assessment of the equipment program information, the gray relation projection method is simply reviewed. Combining the ... For the gray attributes of the equipment program and its difficulty to carry out the quantitative assessment of the equipment program information, the gray relation projection method is simply reviewed. Combining the super-data envelopment analysis(DEA) model and the gray system theory, a new super-DEA for measuring the weight is proposed, and a gray relation projection model is established to rank the equipment programs. Finally, this approach is used to evaluate the equipment program. The results are verified valid and can provide a new way for evaluating the equipment program. 展开更多
关键词 index weight discriminate coefficient gray relation projection method program evaluation
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Assessing the socio-cultural impact of urban revitalisation using Relative Positive Impact Index(RPII)
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作者 Shahim Abdurahiman A.K.Kasthurba Affa Nuzhat 《Built Heritage》 2024年第1期67-83,共17页
Urban heritage is a vital resource that connects communities to their local identity.Unplanned developments and rapid urbanisation often harm the authenticity of historic areas,disrupting the cultural fabric and alter... Urban heritage is a vital resource that connects communities to their local identity.Unplanned developments and rapid urbanisation often harm the authenticity of historic areas,disrupting the cultural fabric and altering their character.This study introduces the Relative Positive Impact Index(RPll),a novel technique for assessing the socio-cultural impacts of urban revitalisation.The significance of RPII lies in its ability to quantitatively evaluate the impacts on the cultural fabric and integrity of historic urban areas,which is crucial for sustainable urban development.The study's objective is to apply RPII in evaluating qualitative socio-cultural characteristics in historic urban areas,with a focus on four main criteria and 16 sub-criteria,in the case of the Kuttichira precinct.The methodology integrates the analysis of published literature,a quantitative survey mapping the stakeholders'perception,and qualitative insights.This approach facilitates an in-depth understanding of how urban revitalisation affects local socio-cultural dynamics,preserving the authenticity and character of historic areas.The study reveals that the revitalisation project in Kuttichira positively impacts the socio-cultural fabric of the area,maintaining cultural integrity and addressing social challenges.These findings offer valuable insights for sustainable urban development and policymaking in historic areas.The study recommends the application of RPll in other urban precincts for comparative analysis and further development of urban development practices,contributing to informed urban policy and planning decisions. 展开更多
关键词 urban revitalisation socio-cultural impact relative positive impact index urban heritage sustainability
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Minimal P-symmetric period problem of first-order autonomous Hamiltonian systems 被引量:3
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作者 Chungen LIU Benxing ZHOU 《Frontiers of Mathematics in China》 SCIE CSCD 2017年第3期641-654,共14页
Let P C Sp(2n) satisfying pk = I2n. We consider the minimal P-symmetric period problem of the autonomous nonlinear Hamiltonian system x(t) = JH'(x(t)). For some symplectic matrices P, we show that for any π... Let P C Sp(2n) satisfying pk = I2n. We consider the minimal P-symmetric period problem of the autonomous nonlinear Hamiltonian system x(t) = JH'(x(t)). For some symplectic matrices P, we show that for any π 〉0,the above Hamiltonian system possesses a kT periodic solution x with kT being its minimal P-symmetric period provided H satisfies Rabinowitz's conditions on the minimal period conjecture, together with that H is convex and H(Px) = H(x). 展开更多
关键词 Maslov P-index relative Morse index minimal P-symmetric period Hamiltonian system
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Positive intercropping effects on biomass production are species-specific and involve rhizosphere enzyme activities: Evidence from a field study 被引量:1
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作者 Amit Kumar Evgenia Blagodaskaya +1 位作者 Michaela A.Dippold Vicky M.Temperton 《Soil Ecology Letters》 CAS 2022年第4期444-453,共10页
Less attention has been given to soil enzymes that contribute to beneficial rhizosphere interactions in intercropping systems.Therefore,we performed a field experiment by growing faba bean,lupine,and maize in mono and... Less attention has been given to soil enzymes that contribute to beneficial rhizosphere interactions in intercropping systems.Therefore,we performed a field experiment by growing faba bean,lupine,and maize in mono and mixed cultures in a moderately fertile soil.We measured shoot biomass and the kinetic parameters(maximal velocity(V max)and Michaelis-constant(K m))of three key enzymes in the rhizosphere:Leucine-aminopeptidase(LAP),β-1,4-N-acetylglucosaminidase(NAG),and phosphomonoesterase(PHO).Faba bean benefitted in mixed cultures by greater shoot biomass production with both maize and lupine compared to its expected biomass in monoculture.Next,LAP and NAG kinetic parameters were less responsive to mono and mixed cultures across the crop species.In contrast,both the V max and K m values of PHO increased in the faba bean rhizosphere when grown in mixed cultures with maize and lupine.A positive relative interaction index for shoot P and N uptake for faba bean showed its net facilitative interactions in the mixed cultures.Overall,these results suggest that over-productivity in intercropping is crop-specific and the positive intercropping effects could be modulated by P availability.We argue that the enzyme activities involved in nutrient cycling should be incorporated in further research. 展开更多
关键词 Enzyme kinetic parameters Phosphorus mobilization Nitrogen fixation Niche complementarity Biomass increase relative interaction index
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Incorporating within- and between-patch resource selection in identification of critical habitat for brood-rearing greater sage-grouse
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作者 Matthew R Dzialak Chad V Olson +2 位作者 Stephen L Webb Seth M Harju Jeffrey B Winstead 《Ecological Processes》 SCIE EI 2015年第1期57-71,共15页
Introduction:Incorporating information on animal behavior in resource-based predictive modeling(e.g.,occurrence mapping)can elucidate the relationship between process and spatial pattern and depict habitat in terms of... Introduction:Incorporating information on animal behavior in resource-based predictive modeling(e.g.,occurrence mapping)can elucidate the relationship between process and spatial pattern and depict habitat in terms of its structure as well as its function.In this paper,we assigned location data on brood-rearing greater sage-grouse(Centrocercus urophasianus)to either within-patch(encamped)or between-patch(traveling)behavioral modes by estimating a movement-based relative displacement index.Objectives were to estimate and validate spatially explicit models of within-versus between-patch resource selection for application in habitat management and compare these models to a non-behaviorally adjusted model.Results:A single model,the vegetation and water resources model,was most plausible for both the encamped and traveling modes,including the non-behaviorally adjusted model.When encamped,sage-grouse selected for taller shrubs,avoided bare ground,and were closer to mesic areas.Traveling sage-grouse selected for greater litter cover and herbaceous vegetation.Preference for proximity to mesic areas was common to both encamped and traveling modes and to the non-behaviorally adjusted model.The non-behaviorally adjusted map was similar to the encamped model and validated well.However,we observed different selection patterns during traveling that could have been masked had behavioral state not been accounted for.Conclusions:Characterizing habitat that structured between-patch movement broadens our understanding of the habitat needs of brood-rearing sage-grouse,and the combined raster surface offers a reliable habitat management tool that is readily amenable to application by GIS users in efforts to focus sustainable landscape management. 展开更多
关键词 Behavioral mode Brood-rearing Centrocercus urophasianus Conditional logistic regression Conservation planning Information-theoretic approach relative displacement index Species occurrence model
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