期待系數 的英文怎麼說
中文拼音 [qīdāixìshǔ]
期待系數
英文
coefficient of expectation-
This paper develops a deterministic inventory model for perishable items with a mixture of back orders and lost sales under inflation and time discounting, where the backlogged demand rate is dependent on the negative inventory level during the stock out period. the main differences from the existing related models are that the present model takes the maximum present value of profit in a repeatable order cycle as the objective function and proposes a more practical constraint of maximum customer - waiting time to ensure a proper customer service level. then the existence and the uniqueness of the solution to relevant systems are examined and a solution algorithm is shown to find the optimal replenishment policy. at last, some numerical examples are presented to illustrate the applicatioh of the model
本文建立了一種考慮通貨膨脹與時間價值的變質性物品的庫存模型，在模型中允許短缺發生且拖后的需求速率與在缺貨期間已經發生的缺貨量有關.和已有相關模型的主要區別在於本模型把一個可重復的訂貨周期內的最大平均利潤的凈現值作為目標函數，且增加了在缺貨期間最長顧客等待時間的限制，以確保庫存系統擁有較高的服務水平.然後討論了模型最優解的存在性與唯一性，並提供了尋求模型整體最優解的演算法.最後用實例說明了此模型在實際中的應用In the chapter two we discussed that the server would first use speed - 1 to serve customers when the system entered the busy state from the empty state, but when the server found the number of customers in the system exceeded the thresh - n during serving, after finishing the service of current customer it would use speed - 2 to serve the next customer till there is no customer. by the method of supplementary variable, l - transition and constructing vector markov, we attained the distribution of the queue length, the distribution of wait - time, the distribution of stay - time, the utility and etc. in the last part of this chapter, we discussed the optimal n * for thresh n which minimizing the cost function and we illustrate the cost function behaves for various parameter selections by a numerical study
在本文第二章討論了當系統從空閑進入忙期時是服務臺以速度1進行服務，但一旦對某顧客服務完畢時如發現系統中的顧客數超過n值時就以速度2服務后續顧客直到系統變空的可修排隊系統，通過構造各種向量馬氏過程和吸收向量馬氏過程，獲得了瞬態、穩態隊長分佈、等待時間分佈、逗留時間分佈、更新周期分佈等一系列排隊指標以及可用度、可靠度等一些可靠性指標，在本章最後又從系統如何更好節省費用角度出發討論了門限n的最優取值問題，並利用mathematic軟體對費用函數進行了數值模擬。In this paper, the repairable queuing system with police is studied. some important queuing quantities and reliability quantities are in detail discussed as follows : ( 1 ) using the renewal process theory and the method of stochastic decomposition, both the transient and equilibrium distributions of the queue length from any state are discussed, and the recursion expression of the equilibrium distribution is given by furthermore, the generating function of equilibrium queuing length distribution is given by ( 2 ) the distribution of waiting time is discussed, and the mean waiting time is given by ( 3 ) the departure of the system is discussed, and the mean value of departure customers when is given by
具體如下： （ 1 ）利用更新過程理論和隨機分解方法，討論了從任意初始狀態出發隊長分佈的瞬態解和穩態解，得到了隊長平穩分佈的遞推公式：並進一步求得了系統的穩態隊長分佈的母函數（ 2 ）討論了穩態等待時間分佈，求得了平均等待時間： （ 3 ）討論了系統的輸出過程，求得了長期單位時間內離去顧客的平均數： （ 4 ）討論了服務臺的不可用度，得到了穩態不可用度: （ 5 ）討論了內服務臺平均故障次數，求得了長期單位時間內的平均故障次數When the data of logistics in current process are used for input of simulating logistics in future 100 % continuous casting process, supply of hot metal from iron - making process may not satisfy the needs of 100 % continuous casting on raw materials. because planning scheme in continuous casting process depends greatly on smelting scheme in convertor vessel, it is important for operator to balance raw materials supply, smelting and casting in order to realize the scheme of 100 % continuous casting. when some equipment are work abnormally, mixer of hot metal and lf furnace can be used for logistics buffer
用攀鋼煉鋼生產數據對模擬軟體系統進行的測試和模擬研究結果表明：模擬系統的隨機數發生演算法可以實現對作業時間的依分佈隨機抽取；在相似的輸入條件下，模擬結果與實際生產物流的時間分佈規律基本吻合，達到了模擬軟體設計的預期目標；若以攀鋼提釩煉鋼廠現工藝的鐵水輸入作為全連鑄后的輸入條件，則現工藝的物料供應能力可能難以滿足全連鑄生產的要求；連鑄機的連澆計劃對轉爐爐次計劃的編制有很高的要求，合理安排來料、煉鋼與澆鑄三者間的物流平衡關系將是保證全連鑄作業的重要條件；當出現設備異常情況時，可以利用混鐵爐與lf爐站前等待作為物流緩沖池，通過延長系統的平均物流時間來緩解因設備檢修和故障等擾動所造成的影響，確保生產的順利進行。By synthesis analysis, sum up researcher network information resource need : ( 1 ) the degree of depends on library debase, ( 2 ) searching engine has become first channel to obtain specialty information, ( 3 ) database has turned into a tool in common use to inquire about electronic resource. ( 4 ) be short of full - text database is a problem to settle in the library, ( 6 ) quality, feedback and effective link are three important factors, which is evaluated searching system for user. ( 6 ) network reference need developing ulteriorly, ( 7 ) the need of interlibrary loan and document delivery is huge. ? personalized customization of information service exists some questions. ? ducational form of information users should diversification
通過綜合分析，總結出科研人員網路信息資源需求具體表現在：科研人員對圖書館的依賴度降低；搜索引擎成為科研人員獲取專業信息的首選渠道；數據庫成為科研人員查詢電子期刊經常使用的工具；全文數據庫缺乏是圖書館急待解決的一大難題；質量高低、反應速度和有效鏈接是用戶評價檢索系統三個重要因素；網上參考咨詢服務有待進一步拓寬；館際互借服務呼聲很高，但存在的問題不容忽視；實施個性化服務略有爭議，一些方面有待商榷；用戶培訓形式注重多樣化。The results indicate thai ; first, there exists quite an obvious gap in terms of service reliability and responsiveness between hotel performance and customers " expectancy that waits to be filled up ; second, the major factors that may restrict hotel service quality include efficiency level of service quality management, organizational culture, management coordination, the general qualification of employees and level of employee sarisfaction with the problems identified through the foregoing research, the thesis proceeds to bring forward suggestion of measures that can help improve the service quality of hotels in china these measures are strengthening the function of service quality management system, implementing the employee satisfaction strategy, improving the comprehensive qualifications of hotel employees through all - round training programs, improving internal coordination in hotels, and managing the expectancy of hotel guests
實證研究由兩部分組成：第一部分是利用servqual模型，從賓客角度調查我國飯店服務質量差距；第二部分是對飯店管理者和員工發放調查問卷，利用sas統計軟體對收集的調查數據進行回歸分析。實證研究結果表明：我國飯店服務質量在可靠性與反應性方面離賓客期望有較大差距，尚有待提高；制約飯店服務質量的主要因素為：服務質量管理效率、企業文化、組織協調度、員工素質和員工滿意度。根據研究中發現的問題，本文提出了提高我國飯店服務質量的具體對策建議：完善服務質量管理體系；實施員工滿意戰略；強化培訓教育，提高員工整體素質；提高飯店內部協調性；管理賓客期望。分享友人