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2,775,850 articles found for: tak((Hua luogeng) or (Chen JingRun) or occurrence or public or XiongQing or tsinghua or QunLun or research or direction or mathematical or China or Japan or academic or report or seminar or organization or computational or mechanics or applied or theory or goldbach's or conjecture or actual or practice or project or significance or (Golden section) or (Overall method))Edit this search | Save this search | Save as search alert | RSS Feedresults 26 - 50Font Size:Journal (2,775,850)Journal/Book TitleThe Lancet (23,686)Journal of Chromatography A (22,241)Chemical Physics Letters (17,908)Physics Letters B (17,012)Analytica Chimica Acta (16,357)view moreTopicmonte carlo (10,165)case report (9,801)inter face (9,337)delta (9,150)omega (8,350)Year2011 (85,735)2010 (186,760)2009 (163,607)2008 (151,985) 2007 (144,821)view moreOpen all previewsSort by: Relevance - selected | Date26Alternative fuel buses currently in use in China: Life-cycle fossil energy use, GHG emissions and policyrecommendationsOriginal Research Article Energy Policy , Volume 38, Issue 1, January 2010, Pages 406-418Xunmin Ou, Xiliang Zhang, Shiyan ChangPurchase$ 19.95Close preview | Supplementary content | Related articles | Related reference work articlesAbstract | Figures/Tables | ReferencesAbstractThe Chinese government has enacted policies to promote alternative vehicle fuels (AVFs) and alternative fuel vehicles (AFVs), including city bus fleets. The life cycle (LC), energy savings (ES) and GHG reduction (GR) profiles of AVFs/AFVs are critical to those policy decisions. The well-to-wheels module of the Tsinghua-CA3EM model is employed to investigate actual performance data. Compared with conventional buses, AFVs offer differences in performance in terms of both ES and GR. Only half of the AFVs analyzed demonstrate dual benefits. However, all non-oil/gas pathways can substitute oil/gas with coal. Current policies seek to promote technology improvements and market creation initiatives within the guiding framework of national-level diversification and district-level uniformity. Combined with their actual LC behavior and in keeping with near- and long-term strategies, integrated policies should seek to (1) apply hybrid electric technology to diesel buses; (2) encourage NG/LPG buses in gas-abundant cities; (3) promote commercialize electric buses or plug-in capable vehicles through battery technology innovation; (4) support fuel cell buses and hydrogen technology R&D for future potential applications; and (5) conduct further research on boosting vehicle fuel efficiency, applying low-carbon transportation technologies, and addressing all resultant implications ofcoal-based transportation solutions to human health and naturalresources.Article OutlineNomenclature1. Introduction2. Methodology2.1. Tsinghua-CA3EM employed2.2. System boundary and sub-stages divided2.3. Covered primary fossil energy, process fuel and GHG types 2.4. Functional units and WTW calculation methods2.5. Pathways selected2.6. WTP calculation methods2.6.1. WTP energy use2.6.2. WTP GHG emission3. Data and assumptions3.1. η, EU and EN3.1.1. Original data and source3.1.2. η and EU3.1.3. EN3.2. Direct and indirect energy use and GHG emission factors for WTP3.3. Original data for electricity WTP3.4. Original data for PTW4. Results and discussion4.1. WTW results4.2. General sensitivity analysis4.3. Key impact factors analysis4.4. Comparative studies4.4.1. Oil-based fuels 4.4.2. NG-based fuels 4.4.3. Coal-based fuels4.4.4. Electricity generation4.4.5. Causal analysis of differences across various LCAstudies5. China's alternative fuel/vehicle policy5.1. Main current policy frameworks and key initiatives5.2. Policy trends: strategic synergies between energy-savingand GHG reduction efforts5.3. Policy tools on discussion6. Concluding remarksAcknowledgementsAppendix. Supplementary materialsReferences27Counter-examples for refinement of conjectures andproofs in primary school mathematics Original ResearchArticleThe Journal of Mathematical Behavior, Volume 29, Issue 1,March 2010, Pages 1-10Kotaro KomatsuClose preview | Related articles | Related reference work articlesAbstract | Figures/Tables | ReferencesAbstractThe purpose of this study is to explore how primary school students reexaminetheir conjectures and proofs when they confront counter-examples to theconjectures they have proved. In the case study, a pair of Japanese fifth gradersthought that they had proved their primitive conjecture with manipulative objects(that is, they constructed an action proof), and then the author presented acounter-example to them. Confronting the counter-example functioned as aPurchase$ 27.95driving force for them to refine their conjectures and proofs. They understood the reason why their conjecture was false through their analysis of its proof and therefore could modify their primitive conjecture. They also identified the part of the proof which was applicable to the counter-example. This identification and their action proof were essential for their invention of a more comprehensiveconjecture.Article Outline1. Introduction2. Theoretical framework2.1. Literature review and research question2.2.Proofs in primary school mathematics: action proofs3. Methods3.1. Purposes and participants3.2. Methods4. Results4.1. Producing and proving a primitive conjecture4.2. Facing a counter-example and modifying their conjecture4.3. Inventing a more comprehensive conjecture5. Discussion5.1. Counter-examples as a driving force for refinement of conjectures andproofs5.2. What kinds of conjectures/proofs analysis lead to such refinement?6. Concluding remarksAcknowledgementsReferences28No project is an island: linking projects to history andcontext Original Research ArticleResearch Policy, Volume 32, Issue 5, May 2003, Pages789-808Mats EngwallClose preview | Related articles | Related reference work articlesAbstract | Figures/Tables | ReferencesAbstractTheories on project management are dominated by a perspective on singular projects, treating the unit of analysis as a lonely phenomenon. Anchored in a comparative case study, this paper discusses how the interior processes of a project are influenced by its historical and organizational context. The paper illustrates how the structures and procedures employed in a project have to be understood in relation to previous and simultaneous courses of activity, to future plans, and to standard operating procedures, traditions, and the norms of its surroundings. The findings suggest that future research on project management needs to extend its temporal scope, analyzing how project practices evolve through history over prior, present, and future projects, as well as its organizational scope, analyzing how project practices relate to long-term institutions as well as simultaneous activities in its environment.Article Outline1. Introduction2. Theoretical background2.1. Normative project management theory 2.2. Descriptive research on project management 2.3. Similar but unique2.4. The lonely project perspective and its limitations3. Research approach and methodology 3.1. Background and sample 3.1.1. The Hydropower Project 3.1.2. The Transmission ProjectPurchase$ 35.953.2. Research design, data collection and analysis4. The case studies visited and revisited4.1. First round of data: the lonely project perspective4.2. First analysis: the success/failure paradox4.3. Second round data: expanding the scope in history and context4.3.1. The Hydropower Project4.3.2. The Transmission Project4.4. Secondary round analysis: historical and contextual linkages5. Discussion5.1. Alternative explanations?5.2. Institutional theory and project management5.3. The seductive image of uniqueness5.4. Limitations and implications for research5.5. Implications for project management practice6. ConclusionsAcknowledgementsReferences29Contingency theory of capacity planning: The linkbetween process types and planning methods OriginalResearch ArticleJournal of Operations Management, Volume 29, Issues 1-2,January 2011, Pages 65-77Antti TenhiäläClose preview | Related articles | Related reference work articlesAbstract | Figures/Tables | ReferencesAbstractAlthough the reliability of production plans is crucial for the performance ofmanufacturing organizations, most practitioners use considerably simplerplanning methods than what is recommended in the operations managementliterature. This article employs the contingency theory of organizations to explainPurchase$ 41.95the gap between the practice and the academic models of production planning. Arguments on the contingency effects of process complexity lead to a hypothesis that expects simple capacity planning methods to be most effective in certain production processes. A strong inference research setting is used to test the contingency hypothesis against a conventional hypothesis that expects the most sophisticated planning techniques to always be most effective. Multisource data from the machinery manufacturing industry support the contingency hypothesis and reject the universalistic hypothesis. The findings are explained using the concepts of task interdependence and bounded rationality. The results have several managerial implications, and they elaborate how classic concepts in organization theory can bring practically relevant insights to operations management research.Article Outline1. Introduction2. Conceptual framework and hypotheses2.1. Underlying assumption: importance of planning in complex organizations 2.2. Universal effect: advantages of sophisticated planning methods2.3. Contingency effect: fit between planning methods and process types3. Methods and data3.1. Research design3.2. Data collection3.3. Measures3.4. Formal evaluation of perceptual measures’ reliability4. Results4.1. Descriptive statistics4.2. Hypothesis testing4.3. Interviews5. Discussion 5.1. Organization-theoretical perspectives to capacity planning 5.2.Possible extensions5.3. Limitations6. ConclusionsAcknowledgementsAppendix A. QuestionnaireReferences30Public relations practice in Japan: an exploratory study Original Research ArticlePublic Relations Review , Volume 27, Issue 4, Winter 2001, Pages 389-402David R. Watson, Lynne M. SallotShow preview | Related articles | Related reference work articlesPurchase$ 31.50 31Building theories of project management: past research, questions for the future Original Research ArticleInternational Journal of Project Management , Volume 22, Issue 3, April 2004, Pages 183-191Jonas SöderlundShow preview | Related articles | Related reference work articlesPurchase $ 31.50 32Trends in research methods in applied linguistics: China and the West Original Research ArticleEnglish for Specific Purposes , Volume 20, Issue 1, January 2001,Pages 1-14Gao Yihong, Li Lichun, Lü JunShow preview | Related articles | Related reference work articlesPurchase $ 31.50 33Project management practices in Pudong, a new economic development area of Shanghai, China OriginalResearch ArticleInternational Journal of Project Management , Volume 15, Issue 5, October 1997, Pages 313-319M. L. Yang, K. B. Chuah, VM Rao Tummala, E. H. Chen Show preview | Related articles | Related reference work articles Purchase$ 31.50。