期刊文献+
共找到7,695篇文章
< 1 2 250 >
每页显示 20 50 100
Problems and countermeasures of sustainable development in Fujian Province in the new century 被引量:2
1
作者 ZHOU Guo-min, MAO Han-ying, YANG Yan-feng (Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China) 《Journal of Geographical Sciences》 SCIE CSCD 2000年第4期20-27,共8页
Fujian province is one of the coastal provinces with rapid economic growth after the reform and opening to the outside world. Being one of the two basic strategies of China in the new era, sustainable development play... Fujian province is one of the coastal provinces with rapid economic growth after the reform and opening to the outside world. Being one of the two basic strategies of China in the new era, sustainable development plays a directive role in the coordinated development of socio-economy, natural resources and ecology of Fujian. This paper analyses some important issues influencing sustainable development in Fujian in the next 20 years, such as the sustainable development of economy, investment environment improving and further opening to the outside, urbanization and coordinated development of city system, rational exploitation of natural resources, environmental conservation and ecological rehabilitation, and narrowing intraprovincial gap. Corresponding countermeasures are put forward. 展开更多
关键词 Fujian province sustainable development problems and countermeasures
在线阅读 下载PDF
Existing Problems of Agricultural Development in China and Recommendations 被引量:1
2
作者 Guoqin HUANG 《Asian Agricultural Research》 2015年第4期13-17,共5页
In 2012,China's total grain yield reached 590 million tons and realized nine consecutive years of growth. This is huge historic achievement of China and also rare in development history of world agriculture. Howev... In 2012,China's total grain yield reached 590 million tons and realized nine consecutive years of growth. This is huge historic achievement of China and also rare in development history of world agriculture. However,at the same time of making great achievements,China's agriculture is still confronted with many problems. On the basis of extensive survey,it pointed out 10 outstanding problems: farmland,labor,livestock power,water conservancy,input,agricultural disaster,ecological and environmental problem,waste of resources,economic scale and economic benefits. These problems have brought great adverse influence on China's agricultural development. In view of these problems,to realize sustainable,stable and healthy development of agriculture in the new period,it came up with following recommendations:( i)deepening the understanding;( ii) enforcing laws strictly;( iii) enhancing training;( iv) increasing benefits;( v) saving resources;( vi) protecting environment;( vii) developing science and technology;( viii) consolidating foundation. 展开更多
关键词 AGRICULTURE developMENT problemS RECOMMENDATIONS C
在线阅读 下载PDF
The Study of Some Problems of Yunnan Flower Industry Development 被引量:2
3
作者 ZhaoJunquan DuGuozhen ChenJiakuan 《Ecological Economy》 2005年第1期30-33,共4页
A few problems exist in flower industry developmentin Yunnan province.The key problem is flower production with sell set in system unqualified,product quality problem;wrong model in specification of quality in product... A few problems exist in flower industry developmentin Yunnan province.The key problem is flower production with sell set in system unqualified,product quality problem;wrong model in specification of quality in product,undeveloped and developed technology of quality standard system hasn’t been used.To change present condition, combining local presentcondition, we can enhance the macroscopic managementand put forward to peasant the policy suggestion to guide the development of Yunnan province flower industry. 展开更多
关键词 the flower industry sustainable developing problem
在线阅读 下载PDF
Progress and Problems of Development Research and Application of Sand Barriers 被引量:3
4
作者 Chang Zhaofeng Liu Shizeng +2 位作者 Wang Qi Liu Shujuan Wang Fei 《Meteorological and Environmental Research》 CAS 2018年第3期18-23,29,共7页
Due to the restrictions on the conditions for afforestation and sand control,the development research,and application of sand barriers have accelerated in recent years,but some problems that cannot be ignored have eme... Due to the restrictions on the conditions for afforestation and sand control,the development research,and application of sand barriers have accelerated in recent years,but some problems that cannot be ignored have emerged in practice. In this paper,the functions of wind prevention,sand blocking and fixation,improving soil physical and chemical properties and increasing plant diversity of sand barriers,accretion coefficient and capacity between sand barriers,and mobile sand barriers were analyzed firstly,and then several issues that should be noted in the development and application of sand barriers were proposed. The results show that sand barriers can fix sand on the spot and maintain the stability of sand surface. As an auxiliary measure before afforestation on a mobile sand surface,they are practical and feasible. The biggest drawback of sand barriers is that they are easy to be saturated. Although they can increase plant diversity and surface roughness,they lose the function of blocking sand flow after being saturated,and their function of in-situ sand fixation also rapidly decreases with the degradation of sand barriers. Mobile sand barriers overcome the disadvantage of sand barriers being easy to be saturated to some extent,but the cost greatly increases. In terms of desertification prevention and control by plants,plants are used as sand barriers to study their functions of sand blocking and sand fixation in many researches and practices,but the more important ecological functions of adjusting temperature on sand surface and achieving surface thermodynamic equilibrium of plants are ignored. 展开更多
关键词 Sand barriers development research Progress problems
在线阅读 下载PDF
Discussion on the Problems and Developing Trend of Construction of Sewage Treatment Plants in Small Towns 被引量:1
5
作者 Liu Jiangguo 《Meteorological and Environmental Research》 CAS 2018年第1期53-56,共4页
Existing problems of sewage treatment plants in small towns were summarized firstly,and then the developing trend of construction of sewage treatment plants in small towns was discussed from the aspects of project dec... Existing problems of sewage treatment plants in small towns were summarized firstly,and then the developing trend of construction of sewage treatment plants in small towns was discussed from the aspects of project decision,site selection,design,processing technology and construction financing models. Finally,outlooks for its future development were proposed to provide reference for the construction of sewage treatment plants in small towns in future. 展开更多
关键词 Small towns Sewage treatment plants CONSTRUCTION problemS developing trend
在线阅读 下载PDF
Latest Developments and Problems in Standardization of Resource Control Technologies for NGN
6
作者 Li Haihua (Institute of Communication Standards Research, China Academy of Telecommunications Research, MIIT, Beijing 100045, P. R. China) 《ZTE Communications》 2008年第4期11-15,共5页
As a hot spot of next generation network, research over resource control has been carried out for years both in China and abroad. With a gradual progress in standardization, this field presents new development trends ... As a hot spot of next generation network, research over resource control has been carried out for years both in China and abroad. With a gradual progress in standardization, this field presents new development trends and features. Based on latest progresses in standardization promoted by ITU-T, TISPAN and 3GPP, new technologies concerned with resource control are introduced. Considering the problems faced in standardization deployment, relevant resource control functions are also analyzed in this article. 展开更多
关键词 RACF Latest developments and problems in Standardization of Resource Control Technologies for NGN GPP
在线阅读 下载PDF
MAJOR PROBLEMS OF SUSTAINABLE DEVELOPMENT ALONG THE BANK AREA OF THE CHANGJIANG RIVER
7
作者 YANG Gui-shan(Nanjing Institute of Geography and Limnology,the Chinese Academy of Sciences, Nanjng 210008, P R. China) 《Chinese Geographical Science》 SCIE CSCD 2000年第2期97-104,共8页
Developing the Changjiang(Yangtze) River and building a developed economic zone along the bank area of the Chanajiang River is a great strategic decision of the national macroeconomic development distribution. This de... Developing the Changjiang(Yangtze) River and building a developed economic zone along the bank area of the Chanajiang River is a great strategic decision of the national macroeconomic development distribution. This decision has both given an impetus to fast development of the regional economy and exacerbated the contradiction among economy and resources and environment. In this paper, some major problems ekisting in economic sustainable development, such as scattered industrial structure, duplicated construction of the great projects, enlarging the development gap of the regional economy and deteriorated environment etc., have been studied. The results show that scattered structure and duplicated distribution of some key industries and projects, especially automobile, electronics and petrochemical industry and communication, power installations, is one of the reasons for low industrial economic benefit; the great development gap among upper, middle and lower reaches areas are enlarging since the 1990’ s; soil erosion, nood disaster and environmental pollution are still exacerliating due to unreasonable over-development. Based on the above analysis, this paper brings out some countermeasures and proposals for increasing the ability of regional sustainable development, including transregional reorganization of industrial structure linking by assets and speeding the process of regional economy integration; gradually controlling and reducing the development gap arnong upper, middle and lower reaches areas through regional cooperation on a mutually beneficial basis; as well as strengthening ecological construction and environmental protection and increasing environmental bearing capacity etc. 展开更多
关键词 the BANK area of the CHANGJIANG River sustainable development structure problemS environment DETERIORATION
在线阅读 下载PDF
Problems in the Biogas Construction in Weihui City and Development Strategies
8
作者 Yilun WANG Chao YUAN +2 位作者 Qian ZHANG Jinfang TAN Peng ZHAO 《Asian Agricultural Research》 2013年第2期72-74,78,共4页
Taking the demonstration biogas construction city in Henan Province-Weihui City as the survey and research city, we give an overview of the industrial and agricultural base and current situation of biogas development ... Taking the demonstration biogas construction city in Henan Province-Weihui City as the survey and research city, we give an overview of the industrial and agricultural base and current situation of biogas development in Weihui City, and analyze the main problems in biogas construction, such as simple development mode of biogas adopted by rural households, laggard construction of large and medium-sized biogas projects, unsound service system for biogas development and failure to comprehensively use biogas resources. According to the practical work experience, we sum up the following. 展开更多
关键词 BIOGAS Weihui CITY problemS developMENT STRATEGIES
在线阅读 下载PDF
Preface for Special Issue on“Key Mechanical Problems of Marine Energy Development Equipment”
9
作者 WU Wen-hua 《China Ocean Engineering》 SCIE EI CSCD 2022年第4期509-510,共2页
There are abundant energy reserves such as oil,natural gas,hydrate,and wind energy in the ocean.Countries around the globe are competing to advance their marine energy development technologies.The exploitation of mari... There are abundant energy reserves such as oil,natural gas,hydrate,and wind energy in the ocean.Countries around the globe are competing to advance their marine energy development technologies.The exploitation of marine resources relies on cutting-edge industrial equipment.After decades of R&D endeavors,China has obtained most of the key technologies for the design,production,testing,and field application of marine energy development equipment(Xie and Zeng,2021). 展开更多
关键词 Key Mechanical problems of Marine Energy development Equipment Preface for Special Issue on
在线阅读 下载PDF
Evaluation of Psychosocial Problems Among African University Students in Uganda: Development and Validation of a Screening Instrument 被引量:1
10
作者 Norman David Nsereko Seggane Musisi Steven Holtzman 《Psychology Research》 2014年第2期112-131,共20页
关键词 心理问题 社会行为 大学生 乌干达 验证 筛选 非洲 评估
在线阅读 下载PDF
Explore and Research Forum in Arbitration The New Rules of CIETAC, and its Problems and Development
11
作者 Liping Shi 《China's Foreign Trade》 2001年第12期9-14,共6页
Editor’s words The author puts forward some problems involving in CIETAC Arbitration Rules 2000 such as the third nation- ality of the presiding arbitrator, the full autonomy of the parties to choose Arbitration Rule... Editor’s words The author puts forward some problems involving in CIETAC Arbitration Rules 2000 such as the third nation- ality of the presiding arbitrator, the full autonomy of the parties to choose Arbitration Rules and the improvement of applying for interim measures and so on, which are welcomed by CIETAC, though some of which CIETAC does do that in practice, for instance, appointing the third nationalities as presiding arbitrator, and some of which the improvement shall be followed by the law, for instance, the problem of interim measures. We hope there are more articles contributed to arbitration in China directly deal with the theory and practice of arbitration in China as well as all over the world. 展开更多
关键词 Explore and Research Forum in Arbitration The New Rules of CIETAC and its problems and development
在线阅读 下载PDF
On the Problems and Strategies Addressed to the Development of Local Colleges
12
作者 闫昭旭 《科技视界》 2014年第8期168-168,186,共2页
Local colleges are the main bodies of Chinese higher education. Their proper and sound development will do good to the development of local economy and society. Compared with famous and key universities, their develop... Local colleges are the main bodies of Chinese higher education. Their proper and sound development will do good to the development of local economy and society. Compared with famous and key universities, their development is in inferior state and there are lots of problems. This article analyses the problems during their development process, then it puts forward relevant strategies so as to provide reference for the development of local colleges. 展开更多
关键词 英语学习 学习方法 阅读知识 阅读材料
在线阅读 下载PDF
“活动-发展”视域下劳动教育的问题症结与实践突破 被引量:2
13
作者 吴乐乐 范卿泽 +1 位作者 陈春晖 左鹏飞 《中国电化教育》 北大核心 2025年第6期95-101,117,共8页
劳动教育是中国特色社会主义教育体系的重要组成部分。“活动-发展”视域下的区域和学校劳动教育政策设计、教材研发、课程实施,存在着“劳动活动形式”与“教育发展实质”相割裂、分离,甚至相冲突、对立的实践问题。从事物价值所体现... 劳动教育是中国特色社会主义教育体系的重要组成部分。“活动-发展”视域下的区域和学校劳动教育政策设计、教材研发、课程实施,存在着“劳动活动形式”与“教育发展实质”相割裂、分离,甚至相冲突、对立的实践问题。从事物价值所体现的“合目的性”与“合规律性”维度,挖掘劳动“活动形式”与教育“发展实质”之间内在相统一的逻辑关联和育人价值理性。建构“活动-发展”型劳动教育,聚焦时代发展需求,重塑劳动教育的价值引领;注重实践组织形态,创新劳动教育的操作程式;着眼学生未来发展,研判劳动教育的课改突破;强化协同育人体系,健全耦合共生的育人机制。 展开更多
关键词 劳动教育 “活动-发展” 问题研究 策略突破
在线阅读 下载PDF
中国大白菜育种70年回顾与展望 被引量:2
14
作者 张凤兰 苏同兵 +7 位作者 张斌 于拴仓 余阳俊 张德双 赵岫云 汪维红 李佩荣 辛晓云 《园艺学报》 北大核心 2025年第5期1111-1135,共25页
系统总结和介绍了中国大白菜育种70年取得的重要成就和研究进展,重点阐述了中国大白菜育种的4个主要历程、资源创新与利用、育种技术的创新与突破、新品种的创新与推广。同时,分析了育种和种业发展中存在的问题,如优异种质的挖掘利用及... 系统总结和介绍了中国大白菜育种70年取得的重要成就和研究进展,重点阐述了中国大白菜育种的4个主要历程、资源创新与利用、育种技术的创新与突破、新品种的创新与推广。同时,分析了育种和种业发展中存在的问题,如优异种质的挖掘利用及精准评价不够系统和深入、高效的生物育种技术尚未得到规模化应用、品种同质化严重、部分茬口类型品种对国外依存度较高、种企研发创新能力需进一步加强和提升、制种基地布局虽初步形成、生产种子质量稳步提升但种子加工和处理技术仍有待进一步提高等。最后,提出了未来大白菜种业在高效育种技术、育种目标以及种子生产与质量提升等方面的发展方向。 展开更多
关键词 大白菜 育种 成就 存在问题 发展趋势
原文传递
Problems and countermeasures for land exploitation and utilization in China's development areas
15
作者 HE Shu-jin, LU Qi, SU Guang-quan (Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China) 《Journal of Geographical Sciences》 SCIE CSCD 2000年第4期67-74,共8页
s: The planning area and developing area in China's l29 national and 584 provincial development areas cover 8000 km2 and l500 km2 respectively. By typical field investigations we found that China's development... s: The planning area and developing area in China's l29 national and 584 provincial development areas cover 8000 km2 and l500 km2 respectively. By typical field investigations we found that China's development areas have the characteristics of abundant categories, excessive quantities, large scales and dense localities in coastlands, border areas and river banks. And their utilization have 4 features of mainly collecting and occupying agricultural lands, minor rebuilding of old city; mainly taking up cultivated lands, minor exploiting and utilizing barren mountains and bleak sloping lands; collecting and occupying lands at first, utilizing afterwards; using large quantities of lands but obtaining comparatively fewer benefits. According to the analyses, China's development areas can be concluded into one of the four categories: constructed from cultivated lands, reconstructed from old cities, constructed from coastlands and islands, and constructed from barren mountains and desolate sloping lands. Their corresponding problems of unsuitable planning and distribution leaving cultivated lands unused, low remission price and chaotic management measures are analyzed in detail and the countermeasures are put forward. These include planning and distribution the lands in an integrated way, managing all these lands in a unified system. improving the growth pattern of their economy, and advancing their utilization and output ratios. 展开更多
关键词 development areas land exploitation and utilization problems and countermeasures
在线阅读 下载PDF
Water resources development and utilization and ecological environment problems in Xinjiang of China
16
《Global Geology》 1998年第1期48-48,共1页
关键词 Water resources development and utilization and ecological environment problems in Xinjiang of China
在线阅读 下载PDF
Problems existing in water resources development and the countermeasures in northwest China continental basins
17
《Global Geology》 1998年第1期57-58,共2页
关键词 problems existing in water resources development and the countermeasures in northwest China continental basins
在线阅读 下载PDF
基本公共卫生服务发展历程、问题及对策研究 被引量:1
18
作者 胡晓先 《中国农村卫生事业管理》 2025年第6期406-411,443,共7页
国家基本公共卫生服务项目自2009年起在全国全面实施,是从国家层面做出的一项全局性、系统性的制度安排,该制度推行15年来,财政补助资金不断增加,相关制度不断完善,覆盖人群不断扩大。文章梳理基本公共卫生服务发展历程和典型做法,分析... 国家基本公共卫生服务项目自2009年起在全国全面实施,是从国家层面做出的一项全局性、系统性的制度安排,该制度推行15年来,财政补助资金不断增加,相关制度不断完善,覆盖人群不断扩大。文章梳理基本公共卫生服务发展历程和典型做法,分析存在的问题,提出对策建议,为强化基本公共卫生服务提供参考。完善基本公共卫生服务制度应优化项目内容、提升基层服务能力、完善资金管理制度、健全流动人口服务机制、发挥信息化支撑作用等。 展开更多
关键词 基本公共卫生服务 历程 问题 对策
原文传递
农机社会化服务发展现状、问题及对策研究 被引量:1
19
作者 孙继东 《农业科技与装备》 2025年第3期65-66,共2页
随着农业现代化的推进,农机社会化服务在提高农业生产效率、增加农民收入、促进农业规模化经营等方面发挥着重要作用。阐述农机社会化服务的发展现状,深入剖析存在的问题,并针对性地提出建议措施,旨在为推动我国农业现代化发展提供参考。
关键词 农机社会化服务 发展现状 问题 措施
在线阅读 下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部