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姓名 黃一寧(Yi-ning Huang)  查詢紙本館藏   畢業系所 工業管理研究所
論文名稱 考慮多階段服務時間下電腦服務設施之定價
(Optimal pricing of computer service facility with multistage service time)
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摘要(中) 此篇論文的目標,即是研究以多階段服務時間分配來描述電腦服務設施的運作情形,Cheng(1997)曾以指數分配來描述電腦系統服務運作的情形,並在考慮電腦系統損壞下,對等候線上顧客期望平均等候時間做出了若干推導,但是現實生活中,顧客(使用者)對計算機中心的使用,並不只侷限做單一工作,很可能一次的使用中就包含了數個工作項目或步驟,故我們嘗試以一個更一般的分配來描述電腦系統服務情形,在同樣考慮系統損壞的條件下,討論電腦服務設施(計算機中心)的定價與產能決策,重新推導顧客在系統內的期望平均等候時間,也對電腦系統分析了不同的參數環境下之結果,最後與Cheng(1997)提出之模型做一分析比較,藉由圖形討論其相關意涵與造成此結果的原因。
摘要(英) The objective of this paper is to examine the impact of introducing a multistage distribution in the computer service facility. Cheng(1997) had derived the model which considered the circumstances of computer systems subject to breakdowns and was described with exponential distribution. However, in practice, services provided by a computing center to a user might not be consisted of a single step but often several steps. Consequently we consider a more general distribution to relate the operation of computer systems. Under the same condition of systems breakdown discussed in Cheng(1997), we discuss the pricing and capacity decision of the service facility, renew the model of users’ expected waiting time in the system, and analysis the results between different parameters setting. We compare our model with Cheng(1997) numerically and graphically, and discuss the implication of these different results.
關鍵字(中) ★ 電腦服務設施
★ 系統損壞
★ 多階段服務時間
關鍵字(英) ★ multistage distribution
★ breakdowns
★ computer service facility
論文目次 第一章 緒論 1
1.1研究背景 1
1.2研究動機 2
1.3研究目的 3
1.4論文架構 3
第二章 文獻探討 6
2.1等候造成之影響 6
2.2電腦服務設施之定價 7
2.3等候成本 9
2.4考慮維修率、損壞率的等候模型 11
2.4.1有限顧客容量 11
2.4.2無限顧客容量 15
2.5厄朗分配(Erlang distribution) 17
第三章 研究問題與方法 20
3.1問題與環境描述 20
3.2方法架構與流程 21
3.3符號定義 30
3.4定價模型 31
3.4.1短期決策問題(產能為固定) 31
3.4.2長期決策問題(產能為可改變的決策變數) 32
第四章 數值分析與結果 34
4.1不同平均維修時間下之分析比較 34
4.2服務設施層級數之分析比較 39
4.3模型比較 42
4.3.1不同維修率下之利潤比較 44
4.3.2不同單位等候成本下之利潤比較 46
4.3.3不同利潤函數參數下之利潤比較 48
4.3.4Cheng(1997)與本模型之定價比較 50
第五章 結論與建議 54
5.1研究結論 54
5.2未來研究建議 55
參考文獻 56
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指導教授 葉英傑(Ying-chieh Yeh) 審核日期 2007-6-22
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