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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

凸函數最佳化在統計問題上的應用 / Convex optimization: A statistical application

劉世凰 Unknown Date (has links)
近年來,凸函數最佳化相關的理論與實務已漸趨完善並廣泛應用在各種不同的領域上。已知針對限制條件下之最大概似估計量(Maximum Likelihood Estimator,簡寫MLE)求解的統計問題,一般都是先求解在無限制條件下之全域最大概似估計量(global MLE),若所求得之解能滿足給定的限制條件時,則代表我們的確得到所要的結果;但若所求得之解不能滿足限制條件時,我們就必須考量於此限制條件下之求解區域的最大概似估計量(local MLE),而其計算通常趨於複雜。在本研究中,我們嘗試藉由凸函數最佳化的理論與方法在受限最大概似估計量的求解上。首先針對一組2X2列聯表(contingency table)資料,給定限制條件為勝算比(odds ratio,簡寫OR)不小於1情況下,欲求各聯合機率之受限最大概似估計量。接下來則討論針對3X2列聯表資料,給定兩個區域勝算比(local OR)皆不小於1之限制條件,求取各聯合機率的受限最大概似估計量。我們最終整理歸納出一套分析方法,並將此歸納結果拓展到對於任意J不小於2之JX2列聯表中之受限最大概似估計量計算問題上。本研究中所提出的求解方法包括將決策變數重新參數化,忽略原始的線性限制等式,並另外在原始目標問題中加入某個懲罰項,使其新的最佳化問題滿足凸函數最佳化問題的條件。接下來利用凸函數最佳化之理論,列出其Karush-Kuhn-Tucker 條件,再藉其中的互補差餘條件(complementary slackness)來分析求得理論最佳解。最後我們得出當懲罰項之相對應的係數為n時,則其所求得之最佳解即為此統計問題中之受限最大概似估計量。
32

臺灣少年小說出版發展之研究 / A study on the publishing history of juvenile novels in Taiwan

廖冬日, Liao, Tung Jih Unknown Date (has links)
台灣少年小說的起步相較歐美各國遲緩,晚至1960年代才出現首批本土少年小說單行本,1990年代質量均佳的作品相繼出版,少年小說才深獲肯定。本研究旨在探討1960到2010年台灣地區少年小說出版發展的歷程,以及影響台灣少年小說出版發展的重要事件與因素,並且進一步探析少年小說書目歷年成長的變化情形。 本研究以歷史研究法為主,根據文獻史料分析,台灣地區少年小說出版發展可區分為四個階段:1960-1973年孕育萌芽期;1974-1987年成長茁壯期;1988-1996年交流拓展期;1997年迄今蓬勃發展期。台灣少年小說的出版發展與政治開放、經濟繁榮、社會多元化以及文化與教育水準的提升等社會變遷有密切的關係。最後挑選出台灣少年小說出版歷程中具有指標性意義的16件大事。 本研究兼採書目計量法,對台灣地區出版的少年小說創作出版品之出版年代、出版社、作者等書目資料進行統計分析,以供未來相關研究參考之用。研究結果歸納:(1)台灣少年小說出版量在1990年代急速成長;(2)1990年代以來大陸少年小說作品數呈現穩定的成長;(3)前十名重要的少年小說出版社:依序為九歌、文房、民生報社、幼獅、小魯、福地、小兵、台灣省政府教育廳、富春以及聯經出版社;(4)前五名重要的大陸少年小說出版社:依序為民生報社、九歌、聯經、風雲時代、小魯以及麥田出版社;(5)前十三名重要的少年小說作者:依序為李潼、沈石溪、管家琪、郭妮、李光福、溫小平、張之路、曹文軒、李淑真、黃海、鄭宗弦、周姚萍以及張友漁;(6)前六名重要的大陸少年小說作者:依序為沈石溪、郭妮、張之路、曹文軒、周銳以及秦文君;(7)少年小說作者生產力與80/20 定律驗證並不相符;(8)台灣少年小說出版發展歷程與出版年代的書目成長變化二者可相互呼應。 綜合研究結果,歸納建議:(1)對兒童書目資料庫的建議:早日成立一座國家兒童圖書館,專門負責建置兒童讀物書目資料庫;(2)對兒童圖書編目的建議:應將少年小說與故事書分開獨立編目,便於兒和童少年選讀適合自己的作品;(3)對出版社的建議:應採計畫出版;鼓勵作家展現本土風情的創作,培植寫作新秀;創作和翻譯作品並重,既可觀摩優秀作品又可滿足讀者需求;(4)對作者的建議:多閱讀優良中外少年小說作品,拓展國際視野;從歷史鄉土中尋找題材,持續不斷磨練寫作技巧,提升作品的品質;(5)對圖書館的建議:圖書館應竭盡所能搜羅優良的本土少年小說作品,並且定期舉辦閱讀推廣活動;(6)對相關研究者的建議:研究結果可供兒童文學界、出版社或圖書資訊服務單位作為參考。 / The start of Taiwan juvenile novels was comparably slower than European and American countries. It was as late as the 1960s when the first batch of local single-volume juvenile novels came out. Juvenile novels started to gain recognition until the 1990s when novels of high quality and high volume have been published. The study aims to discuss the process of publishing development for Taiwan juvenile novels between 1960 and 2010, and the important events and influence factors of the publishing development in Taiwan juvenile novels. The study further analyzed the changes in the growth of bibliography for juvenile novels over the years. The study is based on historical research. According to literature review and historical data, the development of Taiwan juvenile novel publication is divided into four periods: Nurturing Period from 1960-1973. Growing Period from 1974-1987. Exchange and Expansion Period from 1988-1996. Booming Period from 1997-current. The publishing development of Taiwan juvenile novels is closely related to the social changes in political opening, economic prosperity, social diversity, and enhancement in the cultural and educational level of the overall environment. The resercher Picked up 16 major events with indicators of significance in the developing process of publication in Taiwan juvenile novels. The study also employs Bibliometrics to conduct statistical analysis on bibliographical data including the year of publication, publisher and authors of juvenile novels published in Taiwan. The result will be used for reference in related studies in the future and is inferred below: 1.The amount of publication for Taiwan juvenile novels showed rapid growth in the 1990s. 2.The number of Chinese juvenile novels appeared in steady growth since 1990. 3.The top ten important juvenile novel publishers include the followings: namely Chiuko, Winfortune Co., Ltd. , Min Sheng Newspaper, Youth, Tien-Wei Publishing Company, Winfortune Co., Ltd., Xiaobin Publishing Company, The Department of Education, Taiwan Provincial Government, Fu Chun Publishing Company Limited, and Linking Books. 4.The top five important Chinese juvenile novel publishers include the followings: namely Min Sheng Newspaper, Chiuko, Linking Books, Storm and Stress Publishing, Tien-Wei Publishing Company, and Rye Field Publishing Company. 5.Top ten important juvenile novelists include the followings: namely Tong Li, Shixi Sheng, Jiaqi Guang, Ni Guo, Guangfu Li, Xiaoping Wen, Zhilu Zhang, Wenxuen Cao, Shuzhen Li, Hai Huang, Zhongxuen Zheng, Yaoping Zhou, and Youyu Zhang. 6.Top ten important Chinese juvenile novelists include the followings: Shixi Sheng, Ni Guo, Zhilu Zhang, Wenxuen Cao, Rui Zhou, and Wenjun Tai. 7.80/20 Rule is inapplicable to the distribution of juvenile novelists’ productivity. 8.The process of publication in Taiwan juvenile novels correspond with the changes in growth for the year of publication in bibliography. The proposed guidelines are summarized as follows. 1.Recommendation for children’s bibliographical database: Establish a national children’s library soon possible which bears the major responsibility of building the bibliographical database for children’s books. 2.Recommendation for children’s library cataloguing: Juvenile novels and story books are recommended for separate and independent cataloguing so that children and youths could select the books suitable for their own reading requirement. 3.Recommendations for publishers: Publication should be planned and authors are encouraged to exhibit the creativity of local style while incubating the new talents in writing. Emphasize both on creativity and translated works that could offer observation of excellent works as well as satisfying reader needs. 4.Recommendations for authors: Read more excellent Chinese or foreign juvenile novels, expand international horizon, search for materials from history of localness, continue to discipline on writing skills, and improve work quality. 5.Recommendation for libraries:Libraries should do the best they could to collect outstanding local juvenile novels and hold reading promotional activities on a regular basis. 6.Recommendations for relevant researchers: The research results could be offered as reference to children’s literary circle, publishing companies or library information service units.
33

空間自相關模型下空間群聚檢定 / Spatial Clusters in a Global-dependence Model

王泰期, Wang, Tai Chi Unknown Date (has links)
因為疾病空間模式通常會與環境中的危險因子有很強烈的關聯性,因此流行病學家與社會大眾都對疾病的空間模式感到興趣。舉例來說,空間群聚就是一項非常受到重視的疾病空間模式,在眾多的空間群聚檢定方法種,Kulldorff和 Nagarwalla在1995年提出的空間掃描統計量是相當受到廣泛應用的方法,雖然這個統計方法可以檢定初空間資料的異質性,但是卻沒有辦法區隔這些異質性是來自於整體空間資料的相關性或是局部的空間群聚。在本篇論文中,我們將分別提出計次型的統計方法與貝氏統計方法兩種類型的空間群聚檢定方法來處理這樣的問題,其中計次型的統計方法為一兩階段的統計方法,首先採用EM演算法來估計空間自相關,並根據估計的結果與掃描窗格在偵測空間群聚;另一方面,貝氏方法則考慮加入群聚的中心位置及半徑作為事前的機率分布,進而透過MCMC的方法來計算出後驗分布的結果。除此之外,北卡羅來納的嬰兒猝死症和台灣老年人口癌症死亡資料將被用來示範與評價不同群聚檢定方法的差異與效果。
34

電子期刊E-Metrics評鑑模式應用於大學圖書館之研究 / E-Metrics Assessment Model for the Study of Electronic Journals in University Libraries

張慈玲, Chang,Tze-ling Unknown Date (has links)
由於電子資源蓬勃興起,大學圖書館紛紛引進以滿足師生教學研究之需求,然同時預算規模卻未見增加,加以電子資源市場,尤其是電子期刊部份,每年皆以平均7%~10%漲幅成長,使得圖書館對電子期刊使用及其效益,需要有更清楚的了解與掌握,透過衡量網路化服務與資源品質的方法,除可作為圖書館人員決策參考,並能提供有利的理由以尋求經費支援。 本研究目的希能探討電子期刊E-Metrics評鑑相關理論與研究,以ARL E-Metrics計畫為基礎,對大學圖書館電子期刊提出績效評鑑模式芻議與實證分析。採用研究方法為文獻分析法、深度訪談法與電子計量(E-Metrics)分析法,以國立臺灣大學館藏西文電子期刊為對象進行研究。 經訪談與實證資料分析結果,本研究確認了館藏導向電子期刊的績效評鑑的目的、歸納出電子期刊資源與服務評鑑的程序及方法,並建構大學圖書館電子期刊E-Metrics評鑑模式與要件,包含電子期刊資源、使用、成本與績效四大類型,合計14項指標,同時並獲得具體電子期刊績效評鑑結果,確認國內大學圖書館進行電子期刊E-Metrics評鑑模式之可行性。 最後,本研究根據結論,建議可以質化方式進行電子期刊評鑑研究,以獲得對電子期刊資源的全面性瞭解,並對電子期刊E-Metrics評鑑模式與指標、資料蒐集方式等提出建議。而對於未來研究方向,建議可從朝以下四方面努力:(1)進行網路資源與服務導向電子期刊評鑑模式之研究;(2)開發電子期刊使用統計管理軟體;(3)進行電子期刊成本經濟學研究;(4)進行電子期刊使用紀錄分析之評鑑研究。 / Due to the fast growth of electronic resources, it has become a trend for university libraries to acquire such resources to meet the research needs for their users. The expenditures libraries have to spend for electronic resources, especially that for electronic journals have been raised at average rate of 7% to 10% each year. However, the yearly budget for libraries never has been increased as much. It thus has become important for libraries to identify the real usage of and institutional research outcomes from the acquired electronic journals. The assessment of networked information service and resources quality of it is useful for acquisition decision-making. If there is a positive assessment result, then it will also provide justification for seeking budget support. The purpose of this study is to conduct an empirical study so as to enable formulating an assessment model for electronic journals a library has subscribed. The author firstly explores the theories and researches for the application of E-Metrics as assessment model for electronic journals. Taking the ARL E-Metrics project as a referential model, the author combines literature review, in-depth interview, and E-metrics in the research methodology to do researches about the western-language electronic journals subscribed by the National Taiwan University Library. This study has resulted in very useful assessment statistics for electronic journals. From analyzing the data collected from interviews and the related empirical study, the author is able to verify the purpose of assessment for electronic journals under collection development policy, to formulate procedures and methodology for the assessment of electronic journal resource and, the services based on it, to find out necessary components for E-Metrics assessment model for university libraries which comprises of fourteen indicators of four major criteria of (1) e-journal resources (2) its usage (3) its cost and (4) performance from it. The author concludes that the E-Metrics model is good for university libraries to assess their acquired electronic journals. Based on the findings of this study, the author recommends qualitative research to be the more adequate approach for the assessment of electronic journals and proposed the following four areas for future research: (1) investigation of Internet resources and assessment model for electronic journals under the library’s service policy (2) development of statistics and management tools for the subscribed electronic journals (3) cost study of electronic journals from economics point of view (4) analytical study of access logs of electronic journals.
35

台灣各大學人文及社會科學領域學術生產力之研究 / Study on the Scholarly Productivity of the Humanities and Social Sciences in Taiwan’s Universities

詹二洋, Chan, Erh Yang Unknown Date (has links)
本研究針對台灣各大學人文及社會科學領域發表於Web of Science之SSCI、A&HCI引文索引資料庫所收錄之文獻,以書目計量學探討台灣各大學人文及社會科學領域學術生產力之研究,並針對人文及社會科學領域不同學門其學術生產方式加以分析。 依據科技部之學門分類,將人文學與社會科學領域分為21類,分別統計各領域產出相關之情形,以管理學一產出6,876篇最高,而管理學一領域同時也是產出學校數(122所)最多的領域,且以平均產出56.36篇也是最高,顯示管理學一領域相關科系為目前社會科學領域產出之主要科系。人文學與社會科學各領域文獻單一作者與多作者文獻篇數作統計結果發現,各領域間以多作者共同產出文獻為主,僅少部分領域單一作者比例高於多作者比例,以各領域平均作者人數而言,如以四捨五入後為1位者,僅文學一與哲學兩個領域,在全部21個領域中最為接近單一作者產出。其餘19個領域平均作者人數皆大於1.5人。 本研究結果為台灣各大學人文及社會科學領域學術生產力提供一個概括呈現,並協助高等教育評鑑對於全臺灣各大學社會科學領域,學術生產力概況有一背景瞭解,作為日後之評鑑參考。 / This study aims to investigate the scholarly productivity of the humanities and social sciences in Taiwan’s universities by employing a bibliometric methodology. The research data are retrieved from SCI and A&HCI database via Web of Science. In addition, this study reveals the academic production regime in different disciplines under humanities and social sciences. According to the academic classification by the Ministry of Science and Technology in Taiwan, this study is conducted to divide the humanities and social sciences into 21 disciplines, collect the statistical data, and analyze the output in all the disciplines as well. The findings are as follows. Manegement I, with an output of 6,876 articles, leads in quantity of academic papers. Furthermore, Manegement I is also the most highly productive discipline in the fields of humanities and social sciences by the research papers from 122 colleges. As for numbers of average output papers, the discipline Manegement I, again, indicates that it is currently the main department in social science fields; an average output of 56.36 papers is the highest productivity. Compare the multi-author documents with the sole author articles in humanities and social science fields; it is statistically found that, the majority are multi-author papers among the disciplines. Only a small proportion of single-author articles in some areas, the ratio are higher than that of the multi-author documents. In the analysis of the average numbers of authors after rounding to the nearest integer, Chinese Literature and Philosophy, with the average number of author--1, are the only two disciplines which are close to single-author output in all 21 disciplines. The average numbers of authors in the 19 remaining fields are more than 1.5 persons. The results of the study may draw an outline for the scholarly productivity of the humanities and social sciences in Taiwan’s universities. This thesis, on the other hand, may suggest an overview for the further evaluation of the higher education in Taiwan, by building background knowledge for the disciplines under the humanities and social sciences in the universities.
36

組織採用資訊科技之彙整分析 / Organizational Adoption of Information Technology: An Integrated Analysis

傅品甄 Unknown Date (has links)
今已有許多學者研究組織採用資訊科技之議題,而人們看待資訊科技的心態也隨時間變化,影響組織採用IT之因素也許多種,而不同的學者所探討的理論架構和變數也不同,本研究欲做此方向的文獻統整,了解研究趨勢與未來研究方向。 本研究利用彙整分析之研究方法,將過去三十年相關的文獻利用關鍵字搜尋,並利用人工篩選後分析結果,最後我們發現:(1)科技、組織、環境三個因素確實會影響組織採用資訊科技,證實了TOE架構在研究組織採用資訊科技相關之議題的適用性。(2)有些變數像是「顧客滿意」和「採用時機」現在比較少學者探討,但在樣本數足夠的情況下可能是有影響力的變數,未來學者可考慮納入探討。(3)發現「高層支持」、「預期效益」、「競爭壓力」都是確實會影響組織採用資訊科技時會考慮的變數,在實務上,資訊科技的供應商在推廣產品上,應該致力於高層主管的推廣。 / Organizational adoption of information technology is an important research issue for many scholars. However, different scholars may investigate the issue from different technological, organizational and contextual factors (called TOE model), which may lead to inconsistent findings. Therefore, this research aims to build a profile of previously published literature to show historical development. This research adopts bibliometrics as our research method and uses CiteSpace and CATAR toolkit to do our analysis. The results indicate that (1) technology, organization and the environment do affect the organization adoption of Information Technology, confirming the applicability of the TOE model in studying organizational adoption of information technology; (2) some variables like customer satisfaction and timing of adoption are under- explored, more research in the future may better understand their influences; (3) top-management support, expected benefits and competitive pressure are key factors that affect the adoption of IT. In practice, IT vendors may use the result to help promote their products.
37

中国東北工業都市における商業集積の形成と変容

劉, 天野 25 May 2020 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(人間・環境学) / 甲第22668号 / 人博第954号 / 新制||人||227(附属図書館) / 2020||人博||954(吉田南総合図書館) / 京都大学大学院人間・環境学研究科共生文明学専攻 / (主査)教授 小島 泰雄, 教授 小方 登, 教授 山村 亜希, 教授 太田 出 / 学位規則第4条第1項該当 / Doctor of Human and Environmental Studies / Kyoto University / DGAM
38

現代アジアにおける家族意識の計量社会学的研究-東アジアならびに東南アジア7地域を対象として-

伊達, 平和 23 March 2016 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(教育学) / 甲第19446号 / 教博第190号 / 新制||教||160(附属図書館) / 32482 / 京都大学大学院教育学研究科教育科学専攻 / (主査)教授 岩井 八郎, 教授 稲垣 恭子, 准教授 南部 広孝 / 学位規則第4条第1項該当 / Doctor of Philosophy (Education) / Kyoto University / DGAM
39

結婚に関わる意識と女性の社会経済的地位――計量分析を通して――

永瀬, 圭 26 March 2018 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(文学) / 甲第20840号 / 文博第770号 / 新制||文||659(附属図書館) / 京都大学大学院文学研究科行動文化学専攻 / (主査)教授 太郎丸 博, 教授 落合 恵美子, 教授 岩井 八郎 / 学位規則第4条第1項該当 / Doctor of Letters / Kyoto University / DGAM
40

経済と安全保障をめぐる相克―東アジアの重商的平和―

土井, 翔平 25 March 2019 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(法学) / 甲第21517号 / 法博第234号 / 新制||法||166(附属図書館) / 京都大学大学院法学研究科法政理論専攻 / (主査)教授 鈴木 基史, 教授 中西 寛, 教授 曽我 謙悟 / 学位規則第4条第1項該当 / Doctor of Laws / Kyoto University / DGAM

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