1,723,830 research outputs found
sj-docx-1-aph-10.1177_10105395231204181 – Supplemental material for Association Between Temporary Employment and Gradient Health Outcomes Among Chinese Workers
No full textSupplemental material, sj-docx-1-aph-10.1177_10105395231204181 for Association Between Temporary Employment and Gradient Health Outcomes Among Chinese Workers by Long Hao and Jing Lin in Asia Pacific Journal of Public Health</p
Erratum: Osteopontin Deficiency Alters Biliary Homeostasis and Protects against Gallstone Formation
No full textScientific Reports 6: Article number: 30215; published online: 03 August 2016; updated: 22 March 2017. The original version of this Article contained an error in the order of author names, which were incorrectly given as ‘Jing Lin, Wei-qing Shao, Zong-you Chen, Wen-wei Zhu, Lu Lu, Duan Cai, Lun-xiu Qin, Hu-liang Jia, Ming Lu & Jin-hong Chen’.</jats:p
Enjoying the fruit of development? Working conditions and the earnings of low-skilled internal migrants in China across two decades (1993-2015)
No full textChina’s unprecedented economic growth in recent decades can largely be attributed to millions of migrant laborers that made China the “world’s factory.” It is well documented, however, that migrant laborers experience discrimination in the labor market. Despite China’s phenomenal economic growth, few studies have investigated whether the working conditions of low-skilled migrants have improved. In this study, we ask: in the past two decades, have disparities in working conditions and earnings between low-skilled rural-to-urban migrant workers and their urban counterparts decreased? We contrast the working conditions and earnings between migrants and urban residents who lack a high school degree and age 18 to 55 years using panel data, the China Health and Nutrition Survey (1993-2015), and individual fixed effects models to account for selection problems. Findings indicate that over a span of twenty years migrants and urban residents had similar trends in employment and earned incomes, but migrants’ weekly working hours and tendency to work more than legal work hours increased more than urban residents’. Working longer without earning more suggests persistent social inequality in Chinese society in general and deeper injustice among migrant workers
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
CCDC 1405714: Experimental Crystal Structure Determination
No full textRelated Article: Bin Chen, Zhong-Peng Lv, Carol Hua, Chanel F. Leong, Floriana Tuna, Deanna M. D’Alessandro, David Collison, and Jing-Lin Zuo|2016|Inorg.Chem.|55|4606|doi:10.1021/acs.inorgchem.6b0043
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
Strengthening copper matrix composites by in situ synthesized amorphous carbon nanosheet reinforcements
No full textGraphene-like carbon nanosheets with large specific surface areas present a great potential to enhance the mechanical properties of copper matrix composites. To achieve the homogeneous dispersion of nanosheet reinforcements in the copper matrix, in-situ synthesis strategies using solid carbon sources have been developed in recent years. However, the influence of in-situ synthesis factors on the microstructures of carbon nanosheets and the corresponding mechanical behaviors are far from clear. In this work, an amorphous carbon nanosheets reinforced copper matrix composite with significantly enhanced strength had been in-situ synthesized. The dependence of the microstructures and tensile mechanical properties of the composite on the amorphous carbon nanosheet concentration was investigated. The in-situ grown amorphous carbon nanosheets induced remarkably refined Cu grains and they could effectively bear the loads transferring from the matrix. Consequently, the copper matrix composite with 0.6 wt% amorphous carbon nanosheets showed the highest yield strength and ultimate tensile strength of 196.5 MPa and 306.4 MPa, respectively, which are 2.56 and 1.51 folds of the pure copper bulk. The strengthening mechanisms of the amorphous carbon nanosheets/Cu composite were further revealed through the microstructure characterizations and theoretical model analysis. The load transfer was considered as a dominant mechanism for the strengthening
Research of CMOS Microwave and Millimeter-wave Power Amplifier
No full text在本論文中，我們設計並實現了三個利用金氧半場效電晶體(CMOS)製程之功率放大器。此論文分為三個部份，第一部分介紹了在金氧半場效電晶體(CMOS)製程的功率放大器設計考量，以及一些功率放大器的基本原理。第二部份中，設計了第一個功率放大器使用標準0.18-微米CMOS製程，此設計的最大困難是其崩潰電壓僅為1.8 V。我們使用適當的匹配電路設計達到良好的輸出功率及小訊號增益。此功率放大器經由量測可得在24 GHz，輸出功率為19.1 dBm，小訊號增益為18.8 dB，晶片面積僅有0.56 x 0.58平方毫米。第三部分，我們設計並量測了兩個應用於60 GHz之系統的功率放大器。兩者皆使用薄膜微帶傳輸線作為匹配元件，以減低損耗性基板對被動元件的影響。第一個功率放大器使用0.13-微米CMOS製程，由量測結果顯示，當VDD偏壓在3V時，此功率放大器由量測可得在55 GHz，飽和輸出功率為14.3 dBm，輸出功率1-dB功率壓縮點 (P1dB)為11.2 dBm，功率附加效率(PAE)為8 %，小訊號增益為15.5 dB且面積只有0.65 x 0.5平方毫米。第二個功率放大器則使用較先進的90奈米CMOS製程。此電路設計具有寬頻的響應以增加對製程變異性的容忍度，3-dB頻寬從50-70 GHz且面積只有0.66 x 0.5平方毫米，量測結果顯示，當VDD偏壓在2.4 V時，此功率放大器由量測可得在60 GHz，飽和輸出功率為16.2 dBm，輸出功率1-dB功率壓縮點(P1dB)為12 dBm，功率附加效率(PAE)為15 %，小訊號增益為33 dB。三個電路皆顯示了模擬及量測的一致性，而且三者的輸出功率皆優於目前相近頻帶已發表之金氧半場效電晶體(CMOS)功率放大器，顯示出金氧半場效電晶體(CMOS)製程於高頻功率應用的潛力。The goal of the thesis is to design and implement three power amplifiers (PAs) in CMOS process. The thesis consists of three parts. The first part introduces the basic of power amplifier theory, then introduces the design consideration and the design challenge of the CMOS power amplifier. n the second part, the first PA is implemented in a standard 0.18-μm CMOS technology. The major challenge of this circuit is that the breakdown voltage is about 1.8 V. Proper design of matching networks leads to good power and gain performances. The measured output power is 19.1 dBm and the small signal gain is 18.8 dB at 24 GHz. The chip size is only 0.56 x 0.58 mm2. n the third part, two PAs are designed and measured for 60 GHz systems. Thin-film microstrip lines (TFMS) used as matching elements to reduce the effect of lossy substrate on these two circuits. The first PA fabricated in 0.13-μm CMOS process. This PA achieves a measurement Psat of 14.3 dBm, P1dB of 11.2 dBm, PAE of 8 %, and linear gain of 15.5 dB at the frequency of 55 GHz, with a chip size of 0.66 x 0.5 mm2, when VDD is biased at 3 V. The second PA fabricated in a more advanced 90-nm CMOS process. The circuit is designed to have a wide-band frequency response to tolerate process variation. The MMIC PA has a wide 3-dB bandwidth from 50 to 70 GHz, with a chip size of 0.66 x 0.5 mm2. When VDD is biased at 2.4 V, this PA achieves a measurement Psat of 16.2 dBm, P1dB of 12 dBm, PAE of 15 %, and linear gain of 33 dB at the frequency of 60 GHz.The simulations agree with the measurements very well in these PAs, also, three PAs demonstrated high output power compared with the previously works of CMOS PAs operating at frequencies around 24 GHz and 60 GHz.CONTENTS謝 i文摘要 iiBSTRACT ivONTENTS viIST OF FIGURES viiiIST OF TABLES xiihapter 1 Introduction 1.1 Background and Motivation [1] 1.2 Literature Survey of High Frequency CMOS Power Amplifiers 3.3 Contributions 4.4 Thesis Organization 5hapter 2 Overview of Power Amplifier Design 6.1 Introduction 6.2 Design Challenges of CMOS Power Amplifiers 6.3 Power Amplifier Theory [13]-[15] 8.4 Design Considerations of Power Amplifiers 15hapter 3 A 24 GHz Power Amplifier Using 0.18-μm CMOS Technology 18.1 Introduction 18.2 Previously Published Works 19.3 Design a 24 GHz PA using 0.18-μm CMOS Process 21.4 Measurement Results 29.5 Conclusions 34hapter 4 V-Band CMOS Power Amplifier Design 37.1 Introduction 37.2 Design a 60 GHz PA using 0.13-μm CMOS Process 39.3 Measurement Results of 0.13-μm CMOS 60 GHz PA 46.4 Design a 60 GHz PA using 90-nm CMOS Process 52.5 Measurement Results of 90-nm CMOS 60 GHz PA 59.6 Conclusions 66hapter 5 Conclusions 69EFERENCE 71UBLICATION LIST OF JING-LIN KUO 76ournal Papers 76onference Papers 7
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