1,721,092 research outputs found
A Study on Project Performance Evaluation of Engineering Consulting Projects
No full text美國營建研究院（Construction Industry Institute, CII）目前正在發展及運用一套績效管控工具（Continuous Assessment of Project Performance, CAPP），根據以前成功或失敗的標準案例資料庫，利用分類因子及工程績效指標（如業主總支出及變更設計數等等）來及時管控現有的工程。這一工程績效管控工具的主要目的，是提供給工程專案經理在整個工程的生命週期能夠利用績效指標連續並及時地管控工程成本及進度。獲值管理（Earned Value Management, EVM）則是一種整合時程與成本的整合式專案績效評量工具，在美、加、英、日、澳及瑞典等國家已被成熟的運用和認為是專案管理的最佳實務（Best Practice）。EVM提供專案計畫完成的部份即計畫值（Planned Value, PV）、實際已完成的部份即實獲值（Earned Value, EV）、與已完成部份所投入的成本即實際成本（Actual Cost, AC）等三個讓專案經理了解專案現況的測量值，並且提供整合式的績效評量指標，以便在專案進行期間而非之後，作為有效的績效管控回饋工作。工程顧問業傳統的專案管控多依賴專案管理人員的經驗，較少運用客觀與系統化之控制方法和模式。本研究藉由文獻回顧及實例分析探討導入CAPP計畫績效評量理論及實獲值管理理論運用於工程顧問服務專案績效管控上的可行性和價值意義，並藉以整合建立適合我國工程顧問機構執行業務的績效評量指標，繼之以所建立之績效評量指標對工程顧問機構實際從業人員進行問卷調查，以確認整合建立之績效評量指標對工程顧問服務專案績效管控的重要性與實用性，主要目標是希望能將這一套新建立之績效管控工具應用於目前服務中的專案，進行執行績效之控管與改善，以期能有效地提高專案執行績效。述所言經本研究探討分析及問卷調查後所獲致的結論是：「成本」與「時程」是決定工程顧問服務專案績效良窳的主要因子，在專案執行的過程中，必須同時管控 「成本」與「時程」的進度，才能確保專案績效是往成功的方向發展，而CAPP及EVM績效管控工具，可以同步稽核並管理專案之「成本」與「時程」執行績效，且具有早期預警與預測的效能，以之作為工程顧問服務專案的績效管控工具，是相當科學的好方法。而篩選過之CAPP及EVM績效管控指標經過問卷調查所歸納整理出分屬於與財務相關（Financial）、與工作進度／人員相關（Labor Related）、與變更設計（Change Orders）相關及與安全衛生（Safety Related）相關四大類別之69項績效管理指標，應可供工程顧問業作為專案績效管控之參考。Construction Industry Institute(CII) now is developing and using CAPP (Continuous Assessment of Project Performance) which is according to the data base of standard Good/Non-successful case and then using the classification factor and the performance index of construction(ex. Proprietors’ total expense and the numbers of change orders) to manage the proceeding program promptly. The main purpose of CAPP is to offer project supervisor a method to manage and control project cost and schedule continuously and promptly in the whole life cycle of an engineering project. Earned Value Management (EVM) is an integrated assessment method for project performance composed of combined schedule and cost. It has been fully used by America, Canada, England, Japan, Australia and Sweden, and has been regarded as the Best Practice of project management. EVM provides project supervisor with the project’s scheduled accomplish part(Planned Value,PV),the actually accomplished part(Earned Value,EV),and the cost for the accomplished part(Actual Cost,AC) to realize the survey value of ongoing project and also offered integrated assessment of performance index hoping the feedback work of performance management operates efficiently while project is running. As to engineering consultant’s traditional project management usually relies on personal experience of project supervisor rather than objective methods and systematic control models. This study through the studies reviews and case study has investigated the feasibility and value of adopting CAPP plan performance appraisal theory and earned value management theory into the engineering consultant’s project performance management and established a performance assessment index suits our engineering consultant agency for business execution. Then use that index to make questionnaire with employees in engineering consultant agency to confirm the importance and practicability of performance assessment index in project performance management. The main purpose is to adopt the new performance manage method to running project to control and improve performance efficiently as to perfect it. To sum up, through these researches and questionnaires, the conclusion is: cost and schedule are the main factor that decides whether the performance of project manage service doing by engineering consultant is good or not. That is to say, managing cost and schedule during the whole project execution is the only way to ensure the project performance works successfully. The performance manage method, CAPP and EVM, could examine and manage project’s cost and schedule in the meantime and is a scientific way for project supervisor because of its early warning and prediction effect. And the sifted CAPP and EVM indexes through the questionnaire has been concluded and separately arranged on four sections, Financial, Labor Related, Change order, and Safety Related, including 39 performance management indexes, which should able to be consulted by engineering consultant agency for project performance management.論文口試審定書………………………………………………………….一謝 ……………………………………………………………………….二文摘要 …………………………………………………………….........三文摘要 ……………………………………………………………….....五錄.............................................................................................................七目錄......................................................................................................一0目錄.....................................................................................................一二一章 緒論…...…………………………………………………………1.1 研究背景………………………………………………………….1.2 研究動機………………………………………………………….1.3 研究目的…………………………………………………..……...2.4 研究方法……… ………………………………………………….3.5 研究對象與範圍………………………………………………….4.6 研究流程………………………………………………………….4二章 文獻回顧………………………………………………………...6.1 CAPP………………………………………………………….…...6.1.1 CAPP定義…………………………………………………..6.1.2 CAPP指標定義 ……………………………………………..8.1.3 CAPP參數判讀……………………………………………11.1.4 CAPP製圖法………………………………………………14.1.5 CAPP 即時管控…………………………………………...15.2實獲值管理…….………………………………………………...15.2.1 實獲值定義 .……………………………………………….16.2.2 實獲值管理參數定義.…………………………………….16.2.3 PMBOK實獲值管理參數判讀…………………...…….....18.2.4 綜合式績效指標…………………………………………..20.2.5 顧問工作執行成效預測…………………………………..22.2.6 實獲值應用概況…………………………………………..24.3 小結…………………………………………………….……….26三章 績效指標之調查與建立……………………………………….27.1案例公司績效指標探討…………………………………………27.2 CAPP及EVM績效指標探討…………………………………..33.2.1 CAPP績效指標的篩選……………………………………33.2.2 實獲值管理指標的篩選…………………………………..37 3.3 綜合績效指標分析探討………………………………………..38 3.4 小結……………………………………………………………..42四章 問卷調查與結果分析…………………………………..……...44.1問卷調查流程……………………………………………………44.1.1 問卷量表的選擇…………………………………………..44.1.2 問卷內容的形成…………………………………………..44.1.3 問卷對象與數量…………………………………………..49.2問卷之寄發與回收………………………………………………50.3 回收問卷之分析與結果………………………………………...50.3.1 受訪者基本資料統計……………………………………..50.3.2 項目分析…………………………………………………..52.3.3項目分析結果……..……………………………………….55.4 小結……...………………………………………………..……..63五章 個案實例探討與分析………...…………………………………64 5.1 案例說明………………………………………………………..64 5.2 實例的管控績效探討…………………………………………..65.2.1 CAPP管控模式………………………………………........65.2.2 EVM管控模式…………………………………………… 66.3 綜合分析……………………………………………..…………83.3.1 S(成功)/F(失敗)案例指標趨勢 ……………………………84.3.2 關鍵點……………………………………………………..84.4 小結……………………………………………………………...85六章 結論與建議…………………………………………………….86.1結論 ………………………………………………………………..86.2建議 ………………………………………………………………..87考文獻………………………………………………….............……....88錄一……………………………………………………….............….....90錄二……………………………………………………………………..99錄三..…………………………………………………………………..103錄四……………………………………………………………………105錄五…………………………………………………………………...10
Non-enzymatic glucose sensor based on hierarchical Au/Ni/boron-doped diamond heterostructure electrode for improving performances
No full textA novel hierarchical Au/Ni/boron-doped diamond (BDD) heterostructure electrode was fabricated by two-step heat-treatment. The heterostructure that hierarchical Au/Ni nanoparticles are embedded on the surface of BDD was demonstrated by transmission electron microscope (TEM). Cyclic voltammetry (CV) and amperometric detection were used to test electrochemical properties of the prepared electrodes. The Au/Ni/BDD electrode exhibited enhanced catalytic activity and stability in glucose detection, as compared to that of the Au/BDD and Ni/BDD electrodes. On the optimal NaOH concentration and applied potential, the Au/Ni/BDD electrode exhibited an extremely wide detection range of 0.005-32 mM with high sensitivity of 1229.5 μAmM−1cm−2 and an excellent long-term stability (maintains 94.8% of initial current after one month). In addition, the prepared electrode also exhibited a low detection limit of 2 μM (S/N = 3), good selectivity and reproducibility. At last, the reasons for enhanced catalytic activity and excellent stability of Au/Ni/BDD electrode were discussed.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Boron nitride nanosheet nanofluids for enhanced thermal conductivity
No full textIt is difficult for traditional cooling liquids to meet equipment requirements due to the high power and high integration they demand. Nanofluids are nanoparticle dispersions with high thermal conductivities, thus they have been proposed for heat transfer applications. Boron nitride nanosheets ( BNNSs) possess high thermal conductivities and excellent insulation properties. Here, we fabricated BNNS nanofluids and investigated their effects on thermal conductivity enhancements. We find that BNNSs can effectively enhance the thermal conductivity of water. The thermal conductivity of the BNNS nanofluids reached 2.39 W mK-1 at 24 vol% loading. The surface temperature changes of the nanofluids and water were observed during the heating process using an infrared camera. The results show that the nanofluids transfer heat much faster than water, indicating that the fabricated BNNS nanofluids have excellent thermal transfer properties
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