1,721,153 research outputs found
High speed wireless inter-chip signal interconnect using vertical coupled inductors for 3D-IC applications
No full text本篇論文提出一個使用了耦合電感於三維積體電路的晶片間連接。跟電容耦合相比，電感耦合的連接有比較遠的通訊距離，我設計的距離是15 微米。較長的通訊距離意味著有較能抵抗製程上對不準的現象，而且我們使用交錯式的電感可以更進一步的克服這個問題。我們使用振幅偏移調變技術來達到信號完整的傳送。發射器包含鎖相迴路作為本地震盪器並使用電晶體開關作為被動混波器，接收器則包含了整流器來解調訊號並使用限制器放大訊號。本連接方法操作在6Gbps 時能達到4.08pJ/bit 能量效率。此無線連接使用台灣積體電路公司0.18 微米製程來驗證此電路架構。A wireless interconnect for 3D-IC applications is implemented by using coupled inductor design. Inductive coupling interconnect has longer communication distance asompared with capacitive interconnect. Our communication distance is 15µm. The longer distance means that it can resist the alignment mismatches and increase the yields forackaging. We also use a mis-alignment resistance coupled inductor to alleviate the alignment problem. We use ASK modulation technique to transmit the data. In transmitter,a PLL is used as the local oscillator, and switch is used as a passive mixer. In receiver,rectifiers are used to demodulate received signal, and cascaded limiters amplify the signal.This interconnect has energy efficiency of 4.08pJ/bit at 6Gbps. The proposed wireless interconnect is implemented in TSMC 0.18µm process for demonstration of this architecture.目錄 1 章 簡介 ........................................................................................................ 1.1 動機 ........................................................................................................ 1.2 什麼是三維積體電 路 ............................................................................ 3.2.1 封裝堆疊 .......................................................................................... 3.2.2 晶片堆疊 .......................................................................................... 4.2.3 晶圓堆疊 .......................................................................................... 4.3 已知的垂直傳輸技術 ............................................................................ 6.3.1 直通矽晶穿孔（through silicon via，TSV） .................................. 6.3.2 無線電容耦合 .................................................................................. 7.3.3 無線電感耦合 .................................................................................. 7.4 各章節簡介 ............................................................................................ 8 2 章 無線垂直傳輸 ........................................................................................ 9.1 簡介 ........................................................................................................ 9.2 調變和非調變的頻譜 ............................................................................ 9.2.1 雙旁波帶和單旁波帶調變 .............................................................. 9.2.2 振幅調變和角度調變 .................................................................... 12.2.3 數位調變(Digital modulation) ....................................................... 12.2.4 歸零和不歸零訊號的頻譜 ............................................................ 13.2.5 幅移鍵控調變的頻譜 .................................................................... 17.3 現行的無線傳輸技術 .......................................................................... 18.3.1 基頻傳輸(Baseband transmission) ................................................. 18.3.2 幅移鍵控調變傳輸 ........................................................................ 21.3.3 以往的設計方法 ............................................................................ 22 3 章 無線連接設計 ...................................................................................... 24.1 幅移鍵控調變的電感耦合連接 .......................................................... 24.2 通道設計 .............................................................................................. 25.2.1 無線寬頻通道實現 ........................................................................ 25.2.2 對不準問題的改善 ........................................................................ 36.3 發射端(transmitter)和接收端(receiver)電路 ....................................... 45.3.1 發射端電路 .................................................................................... 45.3.2 接收端電路 .................................................................................... 56.4 佈局圖 .................................................................................................. 60 4 章 效能和量測 .......................................................................................... 62.1 抖動和眼圖 .......................................................................................... 62.2 模擬結果 .............................................................................................. 68.3 量測步驟 .............................................................................................. 70.3.1 發射端量測步驟 ............................................................................ 70.3.2 接收端量測 .................................................................................... 70.3.3 無線連接量測 ................................................................................ 70.4 [19]的晶片的量測結果 ....................................................................... 71i.4.1 發射端電路量測結果 .................................................................... 71.4.2 接收端電路量測結果 .................................................................... 73 5 章 結論 ...................................................................................................... 75amp;#63851;考文獻 .................................................................................................................. 7
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Time-to-Event Estimates of the Prevalence of Active Heroin Users in Taipei City
No full text目的：以時間-事件發生法及海洛因戒癮個案治療病史，估計2001至2002年間台北地區海洛因使用人口盛行率。
方法：納入研究之個案，為至台北市立療養院海洛因解毒病房尋求住院戒毒之海洛因成癮者，該院亦為台北市南區的物質濫用治療核心醫院。藉用海洛因使用時間及過去住院戒毒次數等相關治療病史，估計海洛因使用者出現住院戒毒事件之年發生率，再由2001及2002年海洛因成癮者住院戒毒次數等資料，進一步估計出台北地區海洛因活躍使用人口總數及盛行率。
結果：在2001及2002年，分別有181及256次海洛因戒毒住院次數，估算所得之住院戒毒事件年發生率分別為0.086﹙95%信賴區間：0.068-0.104﹚及0.124﹙95%信賴區間：0.097-0.150﹚；責任區域內之海洛因使用人口數估計值分別為2103﹙95%信賴區間：1561-2645﹚及2071﹙95%信賴區間：1664-2478﹚人。台北地區年齡介於15到64歲的海洛因使用人口盛行率估計值分別為0.227%﹙95%信賴區間：0.168-0.285%﹚及0.223%﹙95%信賴區間：0.179-0.267%﹚。在敏感度分析中，顯示住院戒毒總次數之病史，會較海洛因使用時間及責任區域人口數，對於盛行率的估計產生更多影響。
結論：本研究顯示，若能獲得詳細的海洛因使用及相關治療病史，利用時間-事件發生法來估計海洛因活躍使用人口數及盛行率，是相當可行的方式。Objective: This study employs the time-to-event method and the drug-using histories of heroin detoxification patients to estimate the prevalence of active heroin use in Taipei in year 2001 and 2002.
Method: Subjects were inpatients with heroin use from the detoxification units of the Taipei City Psychiatric Center, which was the core hospital responsible for the substance abuse treatment in the southern area of Taipei City. Treatment histories including the duration of heroin use and the total number of past admissions in public detoxification facilities were used to estimate the annual admission rate of heroin users. The size of the heroin-using population and the corresponding prevalence in year 2001and 2002 were then estimated.
Results: There were 181 and 256 admissions for heroin detoxification in year 2001 and 2002, respectively. The estimated annual admission rates of heroin detoxification were 0.086 (95% C.I. = 0.068-0.104) in 2001 and 0.124 (95% C.I. = 0.097-0.150) in 2002, while the estimated numbers of heroin users in the catchment area were 2103 (95% C.I. = 1561-2645) in 2001 and 2071 (95% C.I. = 1664-2478) in 2002. Hence the estimated prevalence of heroin use among residents aged 15-64 years in Taipei were 0.227% (95% C.I. = 0.168-0.285%) in 2001 and 0.223% (95% C.I. = 0.179-0.267%) in 2002. Sensitivity analyses further revealed that the history of total admission number might have more influence upon the prevalence estimate than the duration of heroin use or population size.
Conclusion: This study demonstrates that the time to event method is a feasible and practical one to estimate the size of active heroin-using population and the corresponding prevalence if the detailed information about heroin use and treatment can be obtained.Abstract 3
Abstract (in Chinese) 5
Introduction 6
Method 7
Study sample 7
Data analysis 9
Results 11
Discussion 13
References 17
Table 1. Demographics and behavioral characteristics of heroin users admitted for heroin detoxification treatment. 21
Table 2. Estimates of the prevalence of active heroin users in northern Taiwan 2001-2002. 22
Table 3. Goodness-of-fit tests based on asymptotic likelihood inference for the index admission durations from heroin users. 23
Table 4. A comparison for the estimates of the prevalence of active heroin users using various assumptions. 2
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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