1,724,615 research outputs found
supporting_information – Supplemental material for Pyridine-bridged bifunctional organocatalysts for the synthesis of cyclic carbonates from carbon dioxide
No full textSupplemental material, supporting_information for Pyridine-bridged bifunctional organocatalysts for the synthesis of cyclic carbonates from carbon dioxide by Quan-Yao Liu, Lei Shi and Ning Liu in Journal of Chemical Research</p
Hauck_SupplementaryMaterial - Mortality and Revascularization among Myocardial Infarction Patients with Schizophrenia: A Population-Based Cohort Study
No full textHauck_SupplementaryMaterial for Mortality and Revascularization among Myocardial Infarction Patients with Schizophrenia: A Population-Based Cohort Study by Tanya S. Hauck, Ning Liu, Harindra C. Wijeysundera and Paul Kurdyak in The Canadian Journal of Psychiatry</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
Design and Application of A Resonantor Type Love Wave Oscillator
No full text所有表面聲波中，拉福波基於波導層可增強表面橫波能量且可保護交指叉換能器(IDT)，是最適於液體感測。選擇氧化鋅(ZnO)當波導層，拉福波感測器之機電耦合係數與頻率的溫度係數(TCF)都將趨向有利的改善。結合聚二甲基矽氧化硫(PDMS)所製成之流穿式樣品槽於拉福波感測器上，可對集中於兩組交指叉電極間的微量樣品作感測，且可減少液體電性對於電極邊界條件所產生之不良影響。
在本論文，將133MHz石英基材上鍍上氧化鋅(ZnO/ST-cut quartz)之拉福波感測器整合於震盪器，形成拉福波震盪器。拉福波感測器之敏感度值隨著低黏滯性液體會有增加之趨勢，拉福波震盪器的頻率溫度係數為11ppm/℃。為了消除感測時之環境因素影響，諸如溫度、濕度等，應用雙震盪器之電路結構於感測當中。感測裝置用於量測數種甘油與水的不同混合比例，並且量測三次已確定其重複性，實驗結果顯示拉福波感測器適用於低黏滯性之量測。Among surface acoustic wave (SAW) sensors, Love wave, which is based on the guiding layer can enhance the energy of SH wave and protect IDT, is suited for using in liquid measurement. By choosing ZnO as a guiding layer, the performance of Love wave sensor will be improved including electromechanical coefficient and temperature coefficient of frequency (TCF). The Polydimethylsiloxane (PDMS) flow cell incorporated on Love wave sensor allows a tiny controlled amount of analyte to be confined solely upon the sensing area between IDTs and prevents unwanted electric interactions with IDTS.
In this thesis, the 133MHz ZnO/ST-cut Quartz based Love wave sensor was fabricated and integrated the amplifier to form a Love wave oscillator. The sensitivity of Love wave sensor was measured higher with lower viscosity and TCF of our design Love wave oscillator was performed 11ppm/ ℃. Dual oscillator configuration was constructed to eliminate most environment factors such as temperature, humidity and etc. Then, the sensing device was used to measure with various glycerin mixed with DI water. In order to investigate the repeatability performance, all the measurement was done three times. The results show our design Love wave sensor is suitable for low viscosity sensing.Table of Contents
口試委員會審定書 …………………………………………………... i
志謝 …………………………………………………………………… ii
中文摘要 …………………………………………………………….... iii
ABSTRACT ……………………………………………………………… iv
TABLE OF CONTENTS ………………………………………… v
LIST OF FIGURES ………………………………………… vii
LIST OF TABLES ……………………………………………… ix
LIST OF NOTATIONS ……………………………………………… x
CHAPTER 1 INTRODUCTION ……………………………… 01
1-1 Literature Review …………………………………... 01
1-2 Research Motivation …………………………………... 03
1-3 Content of the Chapters ………………………………….. 05
CHAPTER 2 THEORY AND DESIGN OF LOVE WAVE SENSOR … 06
2-1 Surface Acoustic Waves in Layered Piezoelectric Medium … 06
2-2 Surface wave propagation in viscous liquid ………………... 10
2-3 Dispersion Relation ………………………………………… 15
2-4 Sensor design considerations ……………………………… 17
2-4-1 Substrate of a Love wave sensor …………………… 19
2-4-2 Waveguide Material …………………………………… 20
CHAPTER 3 DESIGN OF LOVE WAVE OSCILLATOR …………… 22
3-1 Configuration of Love wave sensor ….……………………….. 22
3-2 Fabrication of Love wave sensor …………………………… 25
3-2.1 Fabrication of sensor …………………………… 25
3-2.2 Thickness of ZnO …………………………… 32
3-2.3 Frequency response …………………………… 33
3-3 Oscillator ………………………………………. 35
3-3-1 Amplifier design ……………………………. 36
3-3-2 Phase shifter ……………………………. 39
3-3-3 Love wave oscillator ……………………………. 41
3-4 Dual oscillator configuration ……………………………. 44
CHAPTER 4 RESULTS AND DISCUSSIONS …………………. 47
4-1 Measurement setup …………………………………. 47
4-1-1 PDMS flow cell …………………………………. 47
4-1-2 The structure of measurement …………………. 51
4-2 Sensitivity ……………………………………………. 54
4-3 Temperature effect and noise ……………………………. 57
4-4 Analyte preparation for viscosity measurement ……………. 61
4-5 Measurement of liquid viscosity ………………………. 62
4-6 Repeatability ………………………………………. 64
CHAPTER 5 CONCLUSION AND FUTURE WORKS ………. 65
5-1 Conclusion ……………………………………………. 65
5-2 Future perspectives ………………………………………. 66
REFERENCES …………………………………………………. 6
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
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