期刊文献+
共找到62篇文章
< 1 2 4 >
每页显示 20 50 100
Community Perception of Amenities in Tourism-oriented Traditional Villages
1
作者 LI Luna YAN Haiyan 《Journal of Landscape Research》 2025年第3期77-80,共4页
Exploring the creation of comfortable objects in traditional tourism villages from the perspective of tourists can help reveal the essence of these amenities.Taking Yidoushui Ancient Village in Jiaozuo City,Henan Prov... Exploring the creation of comfortable objects in traditional tourism villages from the perspective of tourists can help reveal the essence of these amenities.Taking Yidoushui Ancient Village in Jiaozuo City,Henan Province as an example,this study applied the five-element theory of rural amenities to the research on the tourism-oriented traditional villages.With the help of text analysis tools and field investigations,it identified the objects,indicators,and elements of amenities in Yidoushui Ancient Village.Based on this framework,a survey questionnaire was designed for field research,followed by data analysis.The results indicated that tourists primarily focused on ecological amenities in traditional tourism villages;overall,visitors exhibited relative high perception and positive evaluation of the amenities;there were significant differences in the impact of different amenities indicators on tourist experience,and multiple indicators of ecological amenities showed significantly positive correlation with tourists’mood,satisfaction,and revisit intention,making them core factors in enhancing tourist experience.Cultural amenities significantly improved mood and satisfaction,but showed no significant effect on revisit intention. 展开更多
关键词 Rural amenities Rural tourism Yidoushui Village Rural development Tourist perception
在线阅读 下载PDF
Spatial-temporal Differences in the Improvement of Housing Conditions in China,2000-2020:Empirical Analysis Based on National Census Data
2
作者 Li Chen Li Xing 《全球城市研究(中英文)》 2025年第1期1-31,149,共32页
Adequate,safe and affordable housing and basic services for all are the basis for sustainable development,livelihood security and basic housing rights.Shelter is a basic human rights guarantee and improvements in livi... Adequate,safe and affordable housing and basic services for all are the basis for sustainable development,livelihood security and basic housing rights.Shelter is a basic human rights guarantee and improvements in living conditions are of significant importance to the quality of life.The article uses data from China’s fifth,sixth and seventh population censuses to reveal the spatial and temporal differences in the improvement of housing conditions of households in 281 cities in China from 2000 to 2020.The study concludes the following:(i)The housing conditions score of urban households in China has improved significantly,and the living environment has been significantly improved.The center of gravity of the overall housing conditions score shifts from the western region to the eastern region and then to the central region.(ii)The housing facilities in China’s cities have become increasingly sophisticated during the study period.The overall variation in housing amenities tends to decrease overall,with higher intra-belt variation than inter-belt variation in the four main regions.(iii)Self-built housing,rented housing,purchased housing,other types of housing and inherited housing are the main sources of housing for urban househ olds in China.From 2000 to 2020,the housing structure is characterized by two increases and one decrease,namely an increase in the proportion of purchased and rented housing and a decrease in the proportion of self-built housing.(iv)The main factors influencing the improvement of housing conditions are historical factors,the forces of marketization,urbanization,and housing policy. 展开更多
关键词 Housing conditions Housing amenities Housing sources Influencing factors Chinese cities
在线阅读 下载PDF
Value of Access to Jobs and Amenities: Evidence from New Residential Properties in Beijing 被引量:4
3
作者 丁文捷 郑思齐 郭晓旸 《Tsinghua Science and Technology》 SCIE EI CAS 2010年第5期595-603,共9页
With the rapid urbanization of Chinese cities,access to jobs and amenities is becoming increasingly valued in household's choice of residential locations.In this paper,we estimate the implicit value of access to jobs... With the rapid urbanization of Chinese cities,access to jobs and amenities is becoming increasingly valued in household's choice of residential locations.In this paper,we estimate the implicit value of access to jobs and amenities in Beijing using the hedonic pricing model.The spatial distributions of jobs and amenities in the Beijing Metropolitan Area are quite centralized,supporting the traditional monocentric model in the urban economics literature.Accessibility indices are developed to measure the accessibilities to jobs and amenities of 129 Jiedaos(residential zones).We then employ the hedonic pricing equations to estimate the capitalization effects of these accessibility indices in the prices of new residential properties.The empirical results show that the accessibility indices are important determinants of residential property prices in Beijing,which means that urban residents have a willingness to pay for access to high quality amenities. 展开更多
关键词 JOBS amenities ACCESSIBILITY hedonic pricing model
原文传递
On Bowen Entropy for Stable Sets in Positive Entropy Systems
4
作者 ZHANG Zhengwei YAN Kesong ZENG Fanping 《数学进展》 北大核心 2025年第1期99-112,共14页
In this paper,we study the Bowen entropy of stable sets in positive entropy G-system of amenable group actions.The lower bound of the Bowen entropy of these sets are estimated.
关键词 positive entropy stable set Bowen entropy amenable group action
原文传递
Fiscal Amenities in Serbia during COVID-19 Pandemic Situation
5
作者 Dragana Markovic 《Belt and Road Initiative Tax Journal》 2020年第1期31-31,共1页
Serbian government enacted thefollowing measures for taxpayersduring COVID-19 pandemics ituation:·Deferral of payments of tax on wages and social contributions for private sector is given till 2021.This measure h... Serbian government enacted thefollowing measures for taxpayersduring COVID-19 pandemics ituation:·Deferral of payments of tax on wages and social contributions for private sector is given till 2021.This measure has the goal to enhance liquidity of all the legal entities in Serbia which pay wages to their employees. 展开更多
关键词 Fiscal amenities COVID-19 Pandemic Situation
原文传递
A Note on the Equivariant Coarse Embedding into Hilbert Spaces
6
作者 Fu Benyin Liu Dongyan 《南开大学学报(自然科学版)》 CSCD 北大核心 2024年第6期76-80,共5页
Several equivalent formulations are given for equivariant coarse embedding into Hilbert space.Using these equivalent definitions,it is proved that for a metric space X and a Hilbert space H with proper and isometric g... Several equivalent formulations are given for equivariant coarse embedding into Hilbert space.Using these equivalent definitions,it is proved that for a metric space X and a Hilbert space H with proper and isometric group actions on both of them,if X is coarsely embeddable into H and the group is amenable,then the coarse embedding can be modified to be equivariant by using the invariant mean property of the amenable group. 展开更多
关键词 equivariant coarse emdedding proper and isometric group action amenable groups
原文传递
上半格amenable偏序逆半群 被引量:2
7
作者 邵勇 赵宪钟 《兰州大学学报(自然科学版)》 CAS CSCD 北大核心 2008年第4期139-142,共4页
给出了上半格右amenable偏序逆半群的等价刻画.若(S,V,.,≤)为上半格左amenable偏序逆半群,则≤是amenable偏序并且(S,.)是Clifford半群.
关键词 逆半群 amenable偏序 上半格偏序半群
在线阅读 下载PDF
Guidance and Strategies for Rural Development Based on "Amenity Value"
8
作者 焦林喜 芮旸 《Journal of Landscape Research》 2011年第1期56-59,74,共5页
The connotation of "amenity value" was elaborated,construction practices of "rural amenities" in Taiwan were reviewed,and its role in improving agricultural production environment and operation pat... The connotation of "amenity value" was elaborated,construction practices of "rural amenities" in Taiwan were reviewed,and its role in improving agricultural production environment and operation pattern,promoting rural economic development and quality of rural residents was highlighted.On this basis,a new rural value system was established from the perspectives of agricultural functions,industrial forms and economic forms,and the concept of "rural amenities" was defined.Moreover,the development targets of "rural amenities" were analyzed,including the overall objectives and those specific ones from 3 aspects:production,life and ecology,and finally suggestions on the development of "rural amenities" were proposed,that is,elaborate production,elegant life and refined ecology.Elaborate production focuses on maintaining the diversity of agricultural functions,promoting the upgrade and transformation of agriculture from the aspects of agricultural growth drivers,agricultural production mode,agricultural operation subjects,agricultural operation pattern,agricultural functions,and tries to bring new concepts to agricultural production and operation patterns through developing recreational agriculture and LOHAS rural tourism (LOHAS refers to Lifestyles of Health and Sustainability);elegant life emphasizes the optimization of rural communities,and the protection of cultural relics in rural areas;refined ecology highlights the construction of "rural amenities" from 3 aspects of rural ecosystem,rural living environment and farmland eco-environment. 展开更多
关键词 Amenity VALUE Rural amenities STRATEGIC GUIDANCE Development STRATEGIES
在线阅读 下载PDF
正规纯整群上的偏序 被引量:1
9
作者 邵勇 《西北大学学报(自然科学版)》 CAS CSCD 北大核心 2007年第6期960-962,共3页
目的为研究正规纯整群上的amenable序关系。方法从正规纯整群的锥形出发构造amenable序。结果证明了在正规纯整群的全体锥形所组成的集合到正规纯整群上的全体amenable序所组成的集合之间存在保序的双射。结论正规纯整群上的一个amenabl... 目的为研究正规纯整群上的amenable序关系。方法从正规纯整群的锥形出发构造amenable序。结果证明了在正规纯整群的全体锥形所组成的集合到正规纯整群上的全体amenable序所组成的集合之间存在保序的双射。结论正规纯整群上的一个amenable序被一个锥形所惟一确定。 展开更多
关键词 正规纯整群 amenable序 锥形 保序双射
在线阅读 下载PDF
The Landscape Design of Roads Afforestation of Jiangnan New District in Mudanjiang Municipality
10
作者 许丽颖 张广通 +3 位作者 黄玉燕 杨明诗 杨晓磊 张隽晟 《Agricultural Science & Technology》 CAS 2014年第7期1209-1212,共4页
Based on road characters in Jiangnan New District in Mudanjiang Municipality,four typical roads were selected to carry out road afforestation design with consideration of local building features and local vegetations,... Based on road characters in Jiangnan New District in Mudanjiang Municipality,four typical roads were selected to carry out road afforestation design with consideration of local building features and local vegetations,in order to integrate both of landscape effects,in terms of improving and beautifying city environment,and of ecological effects,such as filtering air,reducing temperature,increasing humidity,and reducing noise. 展开更多
关键词 Road greening Urban greening Ecological benefit Amenity
在线阅读 下载PDF
正则半群上的Amenable偏序关系
11
作者 邵勇 赵宪钟 郭聿琦 《兰州大学学报(自然科学版)》 CAS CSCD 北大核心 2013年第3期389-394,399,共7页
给出了正则半群上Amenable偏序的一些刻画;证明了正则半群S上能够装有Amenable偏序当且仅当S是局部逆半群;完整地描述了完全正则半群上的Amenable偏序;证明了具有逆断面的广义逆半群上的Amenable偏序可被其逆断面上的Amenable偏序所唯... 给出了正则半群上Amenable偏序的一些刻画;证明了正则半群S上能够装有Amenable偏序当且仅当S是局部逆半群;完整地描述了完全正则半群上的Amenable偏序;证明了具有逆断面的广义逆半群上的Amenable偏序可被其逆断面上的Amenable偏序所唯一确定. 展开更多
关键词 正则半群 局部逆半群 纯正半群 Amenable偏序
在线阅读 下载PDF
具有逆断面的一类正则半群
12
作者 李斌 邵勇 《纺织高校基础科学学报》 CAS 2014年第1期24-27,共4页
设S是具有逆断面S°的局部逆半群.从S的一个R-锥形出发,可以构造一个amenable偏序;反之,S上的任何一个amenable偏序都可以由一个R-锥形得到,并由此给出了S的自然偏序的新刻画.
关键词 逆断面 局部逆半群 amenable偏序 保序双射
在线阅读 下载PDF
纯正半群上的一类偏序关系
13
作者 邵勇 任苗苗 《数学进展》 CSCD 北大核心 2013年第4期458-464,共7页
本文引入了右逆半群的自共轭强全子半群和局部极大锥形的概念.由自共轭强全子半群出发,构造出了右逆半群上的一类偏序关系,并由此给出了右逆半群上的自然偏序的新刻画.由纯正半群上存在最小逆半群同余的事实出发(用y表示最小的逆半群同... 本文引入了右逆半群的自共轭强全子半群和局部极大锥形的概念.由自共轭强全子半群出发,构造出了右逆半群上的一类偏序关系,并由此给出了右逆半群上的自然偏序的新刻画.由纯正半群上存在最小逆半群同余的事实出发(用y表示最小的逆半群同余),证明了右逆半群S的全体局部极大锥形和商半群S/y上的全体左amenable偏序之间存在保序双射. 展开更多
关键词 右逆半群 自共轭强全子半群 局部极大锥形 左amenable偏序
原文传递
Amenable格序Clifford半群
14
作者 王建平 《内蒙古师范大学学报(自然科学汉文版)》 CAS 2010年第4期356-359,362,共5页
给出上半格amenable偏序Clifford半群的一些性质,证明了上半格amenable偏序Clifford半群是格序半群,并由此得到一些有趣的新结果.
关键词 CLIFFORD半群 amenable偏序 格序半群
在线阅读 下载PDF
Have the Private Benefits in Italian Firms Decreased?
15
作者 Carmelo Intrisano 《Chinese Business Review》 2012年第10期911-922,共12页
The topic of the paper is the estimate of the benefit of control, according to the Barclay and Holderness method. The reference system of this research is Italy, given that the empirical evidence of the past which had... The topic of the paper is the estimate of the benefit of control, according to the Barclay and Holderness method. The reference system of this research is Italy, given that the empirical evidence of the past which had underlined private benefits particularly high among Italian companies and the reference period is 1999-2007. The idea of this research is to demonstrate that, since the Legislative Decree No. 58 of February 24, 1998 (Consolidated Law on Finance, henceforth Consolidated Law), which has significantly changed the protection of minority shareholders, in Italian, the intensity of private benefits has on average declined sharply. To this end, considering the results of the empirical researches on periods pre-1998 and at the turn of the Consolidated Law, the paper provides evidence that the improvement of minority shareholder protection already shown by these researches is further accentuated over the years, because of the effects that the new regulatory framework has produced. In fact, the basic assumption is that the important laws, as Consolidate Law, require several years to produce the desired results in full. This idea is supported by the findings of research that show an average percentage of private benefits dropped to five percent of the capital. Hence, the investigation is extended to the demonstration of comparability of this estimation with other estimations quoted in literature, verifying the statistical significance of the correlations between the measures estimated and the variables considered as determinants in much of the literature. 展开更多
关键词 private benefits of control amenities block premium voting rights insider shareholders outside shareholders
在线阅读 下载PDF
Land-Use Planning Guidelines for Optimal Coastal Environmental Management
16
作者 Martin Lee Collin Abraham Jacob Melloul 《Journal of Environmental Protection》 2012年第6期485-501,共17页
The objective of this study is to weigh and recommend environmentally-optimal regional land-use planning guidelines for coastal regions. The present malaise is assessed, as regards inefficiencies, non-suitability, non... The objective of this study is to weigh and recommend environmentally-optimal regional land-use planning guidelines for coastal regions. The present malaise is assessed, as regards inefficiencies, non-suitability, non-sustainability, enhancing factors of environmental degradation, and potentially destructive consequences of current land-use alteration. Desired situations and goals are considered, and means are proposed for bridging the gap between the present malaise and a desired situation, based on five key approaches developed by the authors. Specific examples of regional approaches are presented. Guidelines and operational measures for sound regional planning the authors have employed in similar circumstances are recommended. 展开更多
关键词 Land-Use Planning Environmental Management MALAISE ANTHROPOGENIC Pollution Vulnerability Assessment Monitoring Urban-Rural amenities MASLOW PYRAMID
暂未订购
玉米胚芽粕对肉仔鸡的代谢能和回肠氨基酸表观消化率的测定 被引量:4
17
作者 陶丽娟 张艳春 +2 位作者 李建涛 杨桂芹 刘国华 《沈阳农业大学学报》 CAS CSCD 北大核心 2020年第6期741-746,共6页
玉米胚芽粕蛋白质含量较高,氨基酸种类丰富且营养价值很高,是工业加工的副产品,为合理利用玉米胚芽粕提供理论支持和科学依据,试验1选用64只22d龄体重接近的健康肉仔鸡,随机分为2个处理组,每组8个重复,采用套测法(玉米胚芽粕替代30%基... 玉米胚芽粕蛋白质含量较高,氨基酸种类丰富且营养价值很高,是工业加工的副产品,为合理利用玉米胚芽粕提供理论支持和科学依据,试验1选用64只22d龄体重接近的健康肉仔鸡,随机分为2个处理组,每组8个重复,采用套测法(玉米胚芽粕替代30%基础饲粮),以二氧化钛(TiO2)作为外源指示剂进行代谢试验,以评定玉米胚芽粕在肉仔鸡中的氮校正表观代谢能。试验2选用32只26d龄体重接近的健康肉仔鸡,采用回肠末端法以TiO2为外源指示剂进行代谢试验,对玉米胚芽粕在肉仔鸡中的回肠末端氨基酸的表观消化率进行了评定。结果表明:玉米胚芽粕在肉仔鸡中的表观代谢能(AME)为(6.88±1.41)MJ·kg^-1,氮校正表观代谢能(AMEn)为(6.81±1.25) MJ·kg^-1,能量表观代谢率为(38.47±19.45)%,氮校正能量表观利用率为(38.08±17.05)%。玉米胚芽粕在肉仔鸡中4种限制性氨基酸的回肠末端氨基酸(AA)表观消化率(AID)为:赖氨酸(77.03±0.02)%、蛋氨酸(87.03±0.01)%、苏氨酸(69.95±0.01)%、胱氨酸(78.44±0.01)%。玉米胚芽粕在肉仔鸡中17种氨基酸回肠末端氨基酸表观消化率(AAAD)平均值为(78.67±0.02)%。表明玉米胚芽粕在肉仔鸡中能量的利用率较低,而回肠AAAD较高。 展开更多
关键词 玉米胚芽粕 肉仔鸡 AMEn 回肠末端氨基酸AID
在线阅读 下载PDF
Amenable上半格序广义逆群 被引量:2
18
作者 赵冬艳 李培 《纺织高校基础科学学报》 CAS 2009年第2期141-143,148,共4页
研究了amenable上半格序广义逆半群.证明了若(S,.,∨)为amenable上半格序广义逆半群,则(S,.)为逆半群.进一步得到amenable上半格序广义逆半群在其偏序≤下为分配格.同时,给出了一些有趣的结果.
关键词 amenable上半格序广义逆半群 amenable格序Clifford半群 分配格
在线阅读 下载PDF
关于一类偏序正则半群 被引量:1
19
作者 元文娥 雷晓敏 王斌 《纺织高校基础科学学报》 CAS 2011年第3期397-399,共3页
给出了上半格偏序正则半群的定义.通过对其偏序的研究,得到上半格偏序正则半群成为逆半群的一个刻画.设(S,∨,.,≤)是上半格偏序正则半群,若≤是自然偏序的扩张,则(S,.)是逆半群.进一步地,若≤是amenable偏序,则(S,.)是Clifford半群.
关键词 逆半群 自然偏序 上半格偏序半群 amenable偏序
在线阅读 下载PDF
三七菊花速溶粉毒理学安全性评价 被引量:2
20
作者 白巍 普岳红 +1 位作者 杨永红 苏豹 《中国民族民间医药》 2014年第5期13-18,21,共7页
目的:对以三七、菊花、乳糖等为原料生产的三七菊花速溶粉进行毒理学安全性评价。方法:用小鼠急性经口毒性试验、Ames试验、小鼠骨髓细胞微核试验、小鼠精子畸形试验、大鼠30 d喂养试验等。结果:经口急性毒性试验LD50>21.50g/kg.bw,... 目的:对以三七、菊花、乳糖等为原料生产的三七菊花速溶粉进行毒理学安全性评价。方法:用小鼠急性经口毒性试验、Ames试验、小鼠骨髓细胞微核试验、小鼠精子畸形试验、大鼠30 d喂养试验等。结果:经口急性毒性试验LD50>21.50g/kg.bw,属无毒级;Ames试验、小鼠骨髓嗜多染性红细胞微核试验和小鼠精子畸形三项遗传毒性试验检测均为阴性结果;30d喂养试验末期各项血液学指标、生化指标检测结果和肝、肾、脾、及生殖腺脏器系数值与阴性对照组无明显差异。大鼠体重变化、食物利用率正常,病理组织学观察结果表明肝、肾、胃、十二指肠及卵巢和睾丸均未见明显异常。传统致畸试验未见对胎鼠致畸效应或其它胚胎毒性作用。结论:三七菊花速溶粉对动物的生长发育、造血功能、肝肾功能、器官组织均无明显毒性作用。 展开更多
关键词 三七菊花速溶粉 毒理学 安全性评价 Amens试验
暂未订购
上一页 1 2 4 下一页 到第
使用帮助 返回顶部