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调水工程输水管道建设对沿线景观格局影响的研究 被引量:1
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作者 吴钢 董孟婷 +2 位作者 唐明方 李思远 曹慧明 《河南理工大学学报(自然科学版)》 CAS 北大核心 2016年第3期373-380,共8页
为了了解调水工程输水管道建设对沿线景观格局的影响,选取南水北调中线一期工程河北省易县段调水工程输水管道建设区域为研究对象,以50-3 000 m划分不同宽度研究区,利用Arc GIS和FRAGSTATS软件,研究了施工建设前、中、后期沿线土地利用... 为了了解调水工程输水管道建设对沿线景观格局的影响,选取南水北调中线一期工程河北省易县段调水工程输水管道建设区域为研究对象,以50-3 000 m划分不同宽度研究区,利用Arc GIS和FRAGSTATS软件,研究了施工建设前、中、后期沿线土地利用类型的变化,并且分别计算不同宽度及整体景观的景观指数,分析管道建设对沿线区域景观格局的影响。研究结果表明:管道工程建设期的对区域土地利用方式产生的影响较为明显和强烈,工程建设对施工作业带两侧100 m范围内影响最为明显。 展开更多
关键词 南水北调 输水管道建设 景观指数 遥感影像
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生的辉煌 逝的无憾——观严斌先进事迹报告会有感
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作者 项益 《农业发展与金融》 2011年第4期109-109,共1页
严斌我认识你70后农村的孩子。
关键词 诗歌 文学 项益 《观严斌先进事迹报告会有感》
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Method for predicting economic peak yield for a single well of coalbed methane 被引量:5
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作者 YANG Shen KANG Yong-shang +2 位作者 ZHAO Qun WANG Hong-yan LI Jing-ming 《Journal of China University of Mining and Technology》 EI 2008年第4期521-526,共6页
The development of coalbed methane (CBM) in China poses great difficulties because of high investments, low produc- tion and high risks. So a study of the economic effect of a single well at its preliminary stage is h... The development of coalbed methane (CBM) in China poses great difficulties because of high investments, low produc- tion and high risks. So a study of the economic effect of a single well at its preliminary stage is helpful for commercial exploitation of CBM. Affected by wellbore flow pressure, initial reservoir pressure, relative permeability, Langmuir pressure and other factors, the trend of declining production of a single CBM well agrees, by and large, with a hyperbolic pattern of decline. Based on Arps’s equation, nearly 200 wells production with different peak yields and initial rates of were simulated. Given the present cost of drill- ing, gas production and engineering on the ground, the gross investment for the development of a single coalbed methane well was estimated for the Fanzhuang block in central China. Considering the current industrial policies for CBM, we established an eco- nomic assessment model and analyzed economic peaks. The results show the economic benefits with or without government subsi- dies at different peak yields of a single CBM well. The results of the evaluation can be directly applied in the Fanzhuang block. The evaluation method, formulated in our study, can be used to other areas with similar conditions. 展开更多
关键词 INVESTMENT hyperbolic decline economic benefits production peak
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Establishment and optimization of project investment risk income models on the basis of probability χ distribution 被引量:1
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作者 吕渭济 崔巍 《Journal of Coal Science & Engineering(China)》 2001年第2期100-102,共3页
In this paper, two kinds of models are presented and optimized for project investment risk income on the basis of probability χ distribution. One kind of model being proved has only a maximal value and another kind b... In this paper, two kinds of models are presented and optimized for project investment risk income on the basis of probability χ distribution. One kind of model being proved has only a maximal value and another kind being proved has no extreme values. 展开更多
关键词 project investment risk income χ distribution
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Research on the evaluation and mechanism of socio-economic benefit of highway projects
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作者 Wang Yuning Yun Yingxia Fan Zhiqing 《Engineering Sciences》 EI 2013年第6期91-96,共6页
Based on the theory of system dynamics, the paper analyzes the mechanism of socio-economic benefits of highway projects and establishes the system dynamics model of regional economic-highway development. Then taking J... Based on the theory of system dynamics, the paper analyzes the mechanism of socio-economic benefits of highway projects and establishes the system dynamics model of regional economic-highway development. Then taking Jinji(Tianjin--Jixian) Highway of Tianjin as an example, the errors of system simulation are tested, and the system dynamics model built is verified to be quite stable, which has a high performance. Through the comparison of simulation results with and without Jinji Highway, the paper simulates and predicts the socio-economie benefit of each year from 2003 to 2013. Thus the quantification evaluation of socio-economic benefit of highway project is realized and will provide the theory instructions for similar projects in the future. 展开更多
关键词 highway proj ect socio-economic benefit EVALUATION system dynamics
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Framework for Quality Improvement of Infrastructure Projects
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作者 Abukar Warsame 《Journal of Civil Engineering and Architecture》 2013年第12期1529-1539,共11页
In order to achieve high quality that not only gives acceptable return value to society but also satisfies the needs of all the stakeholders of infrastructure projects, comprehensive understanding of issues pertaining... In order to achieve high quality that not only gives acceptable return value to society but also satisfies the needs of all the stakeholders of infrastructure projects, comprehensive understanding of issues pertaining to the quality of the project is needed. The aim of this study is to provide an overview the most common procurement methods used in constructing infrastructure transport projects and analyze how these methods contribute to the desired quality of the final product in relation to client competence. An on-line survey of construction actors was carried out to ascertain quality level of Swedish infrastructure transport projects and determinant factors of quality problems. An equal number of respondents indicated that the quality of infrastructure projects has either increased or remained same level over the past twenty years. Respondents also pointed out lack of client competence that is vital in realizing the desired quality level through proper procurement, monitoring and evaluation procedures. Public clients heavily rely on traditional design-build procurement that requires considerable client involvement of a project. Thus, the association of quality problems and lack of client competence may not be a mere coincidence but an overlooked outcome of current situation. 展开更多
关键词 COMPETENCE infrastructure transport procurement QUALITY warranties
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Factors Influencing the Effectiveness of Bilingual Educational Programs The Prospects of Pilot Programs in Georgia
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作者 Shalva Tabatadze 《Sino-US English Teaching》 2015年第2期93-109,共17页
Multilingual Education Programs Regulation was adopted and the implementation of bilingual educational reform started in Georgia in 2010. The paper presents research results on readiness of non-Georgian schools to imp... Multilingual Education Programs Regulation was adopted and the implementation of bilingual educational reform started in Georgia in 2010. The paper presents research results on readiness of non-Georgian schools to implement multilingual educational programs effectively. The research studied the important factors influencing the effectiveness of bilingual educational programs, specifically (1) type of program, (2) human resources of schools and teachers professional development, (3) bilingual education as shared vision for all school stakeholders, and (4) community and parental involvement in designing and implementation of bilingual educational programs. The following research methods were used during the research: (1) quantitative and qualitative content analysis of bilingual educational programs of 26 non-Georgian schools of Kvemo Kartli and Samtskhe-Javakheti regions of Georgia, (2) quantitative survey of non-Georgian school principals through questionnaires, and (3) quantitative survey of non-Georgian schools' teachers of different subjective groups through questionnaire. The study revealed that schools are implementing mostly "weak" bilingual educational programs. The schools implementing bilingual educational programs do not have sufficient human resources, bilingual education is not a shared vision for all school stakeholders and parents and community are not actively involved in designing and implementation of the programs. 展开更多
关键词 Georgia bilingual education ethnic minorities bilingual program effectiveness non-Georgianschools
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Economic Viability of Production of Tree Parica (Schizolobium amazonicum Huber ex. Ducke) of Reforestation Project in the Municipality Paragominas-PA, Brazil
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作者 Manoel Tavares de Paula Altem Nascimento Pontes +4 位作者 Helio Raymundo Ferreira Filho Lucy Anne Cardoso Lobao Gutierrez Ismael Matos da Silva Maria da Conceicao Silva Damasceno Aline Lima de Sena 《Journal of Life Sciences》 2014年第12期967-971,共5页
The objective of this study was to analyze the profitability of production Parica reforestation in the municipality of Paragominas-PA. The study was conducted in the municipality of Paragominas Messoregiao located in ... The objective of this study was to analyze the profitability of production Parica reforestation in the municipality of Paragominas-PA. The study was conducted in the municipality of Paragominas Messoregiao located in the northeast of Para. The basic data used in the economic evaluation of production of planting parica (costs and revenues) were derived from primary source through raising production cost of parica with farmers from the municipality, analyzing the period of production horizon of seven years. The discount rate chosen for economic evaluation was 10% per year. NPV (net present value) calculation IRR (internal rate of return), BCR (benefit-cost ratio) and EP (break-even point). To check the economic feasibility of producing parica the following criteria were used for economic analysis. The results for NPV, IRR and BC ratio were respectively of $495,970, 28.83% and 2.43. For EP (break-even point) the value of 41.08% was found, which demonstrates the minimum amount of production, so that revenue equals costs. Based on the results obtained, it was found that the reforestation model with parica proposed in this paper presents economically viable for deployment. 展开更多
关键词 AMAZON parica REFORESTATION
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Multi-level fuzzy comprehensive appraisal on social effects of projects 被引量:1
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作者 孙立新 李良宝 +1 位作者 李晓东 王强 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2004年第5期524-527,共4页
The application of multi-level fuzzy comprehensive appraisal on social effects of projects has been studied. The principles for setting up an index system have been analyzed and the index system has been set up accord... The application of multi-level fuzzy comprehensive appraisal on social effects of projects has been studied. The principles for setting up an index system have been analyzed and the index system has been set up according to projects of construction. Models for multi-level fuzzy comprehensive appraisal have been offered and relative calculation steps have been given according to project instances. 展开更多
关键词 multi-level fuzzy comprehensive appraisal projects of construction multi-level index system
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Including Co-benefits in the CDM of the Power Sector: A Case Study for India
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作者 Ryo Eto Akinobu Murata +1 位作者 Yohji Uchiyama Keiichi Okajima 《Journal of Energy and Power Engineering》 2012年第12期1925-1934,共10页
This study examines the effects of the inclusion of co-benefits on the potential capacity of advanced thermal plants with a linear programming model in the CDM (clean development mechanism) in India's power sector.... This study examines the effects of the inclusion of co-benefits on the potential capacity of advanced thermal plants with a linear programming model in the CDM (clean development mechanism) in India's power sector. It investigates how different marginal damage costs of air pollutants affect the potential capacity of NGCC (natural gas combined cycle) and IGCC (integrated gasification combined cycle) by CDM projects with a scenario analysis. Three results are found from this analysis. First, IGCC and NGCC are installed at lower CER (certified emission reductions) prices when the marginal damage costs of air pollutants are added to the CER prices. Second, the CER prices of $1/tCO2 correspond with the sum of marginal damage costs of air pollutants of $150/t for NGCC and $30/t for IGCC in India's power sector. Thus, including the co-benefits into CDM attracts developing countries such as India where coal resource is redundant. Third, the SOx and NOx reduction benefits attained from the CDM projects become large in a grid where IGCC is installed. 展开更多
关键词 Advanced thermal plants clean development mechanism power generation programming model INDIA co-benefit.
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Exploring ERP Adoption Cost Factors
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作者 Moutaz Haddara 《Computer Technology and Application》 2012年第3期250-261,共12页
Due to their limited resources, budgets and their high sensitivity to costs, when Small and Medium Enterprises (SMEs) take the first step into implementing an Enterprise Resource Planning (ERP) system, they need t... Due to their limited resources, budgets and their high sensitivity to costs, when Small and Medium Enterprises (SMEs) take the first step into implementing an Enterprise Resource Planning (ERP) system, they need to think about many things, foremost the cost of adoption. Literature suggests that most ERP implementations fail due to inaccurate and optimistic budget and schedule estimations, as well as, anticipating indirect costs beforehand is problematic. With the deficiency of a clear model of cost factors for ERP adoptions, ERP adoptions face high risks of failure. Failures could be caused by several factors, but the scope of this research is focused on identifying, exploring, and validating a comprehensive list of ERP adoption cost factors. This could aid SMEs in visualizing the different expected costs, and would consequently assist in better future cost management and estimations. There has been plenty of research in ERP; however, a clear gap in ERP cost identification, management, and estimation exists. This paper focuses on identifying direct and indirect cost factors that influence total costs in the ERP adoption process. The paper presents a cost list that has been developed through literature and an ERP expert panel. Furthermore, this study validates the costs list through interviews with different stakeholders within ERP adoption projects in Egypt. 展开更多
关键词 ERP (enterprise resource planning) cost estimation cost factors SMEs (small and medium enterprises).
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The Bruce Highway Action Plan Program Evaluation
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作者 Wayne Mark Davies 《Journal of Civil Engineering and Architecture》 2015年第3期350-367,共18页
The BHAP (Bruce Highway Action Plan) Program Evaluation was a momentous task conducted in most part by the TMR (Transport and Main Roads) CBA (cost benefit analysis) team. The evaluation included 189 overtaking ... The BHAP (Bruce Highway Action Plan) Program Evaluation was a momentous task conducted in most part by the TMR (Transport and Main Roads) CBA (cost benefit analysis) team. The evaluation included 189 overtaking lanes, 404 km of road widening and shoulder sealing in various places between Brisbane and Cairns, 56 capacity focused projects and 16 flood immunity focused projects. The total projected capital costs of all projects proposed as part of the BHAP amounted to over 16 billion dollars. The program evaluation conducted, due to the short timeframes, lack of available data and strategic nature of the plan, has been "coined" a strategic evaluation. This paper focuses on the methodology applied to the projects proposed in the BHAP. A TMR designed project/program evaluation model (CARP (Concise Analysis of Road Programs) V1.0) was used to evaluate the majority of the proposed BHAP projects. The model produces streams of discounted benefits and costs of the projects and program using limited and incomplete data. The large scale of work and the close proximity of projects allowed for an integrated approach to the analysis, which considered the impact projects have on each other. The result of the program, if all evaluated projects are included, is a BCR (benefit cost ratio) of approximately 0.7l at a discount rate of 7%. If the less viable projects are removed from the program, the program can obtain a benefit cost ratio of greater than 1 with a sufficiently large number of projects remaining. 展开更多
关键词 Program evaluation cost benefit analysis Bruce Highway.
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Boosting Collaborative Project Alignment
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作者 Kim Jansson Iris Karvonen Martin Ollus Mikko Uoti 《Journal of Mechanics Engineering and Automation》 2012年第4期243-250,共8页
Managing a large-scale distributed engineering project needs skilled, motivated and committed personnel. Unified and aligned working methods are needed. Project alignment is the process of ensuring that key stakeholde... Managing a large-scale distributed engineering project needs skilled, motivated and committed personnel. Unified and aligned working methods are needed. Project alignment is the process of ensuring that key stakeholders share a common understanding of the project mission, goals, objectives, tactics, work processes and plans and have the required competences and skills. Based on current advances in the area of collaborative networked organizations, project management and Internet web 2.0 technologies, the authors have identified further needs and opportunities for development in the area of Collaborative Project Management. The Project Alignment Booster is a set of software services used to promote collaborative project management. The tool has been developed to suit industrial requirements in the area of large and complicated engineering project management, The paper reports the results of developing a toolkit to support collaborative project alignment. 展开更多
关键词 Collaborative project management networked organizations software as a service intemet web 2.0.
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Evaluating Synthetic Economic Benefit of Introducing Projects Based on BP Neural Network Model
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作者 Jian Wang Shuli Wang 《Journal of Systems Science and Information》 2007年第3期313-319,共7页
A new method for the evaluation of synthetic economic benefit of introducing projects based on BP neural network is introduced. A specific and careful study on how to set up the BP neural network model for evaluating ... A new method for the evaluation of synthetic economic benefit of introducing projects based on BP neural network is introduced. A specific and careful study on how to set up the BP neural network model for evaluating economic benefit of introducing projects is focused. The gained results compared with those regular methods show that the method makes a new way to solve the problem. 展开更多
关键词 BP neural network synthetic economic benefit introducing projects EVALUATION
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