Die-level leakage current path analysis based on IR-OBIRCH technology

Author(s):  
Jinglong Li ◽  
Gaojie Wen ◽  
Joe Yu ◽  
Grace Song
Author(s):  
Hung-Yi Liu ◽  
Chung-Wei Lin ◽  
Szu-Jui Chou ◽  
Wei-Ting Tu ◽  
Chih-Hung Liu ◽  
...  

2019 ◽  
Vol 26 (2) ◽  
pp. 196-205
Author(s):  
Chu-Yun Lu ◽  
Chun-Ying Chiang ◽  
YuChun Yao ◽  
Fan-Ko Sun

BACKGROUND: Substance use is a global mental health issue. There has been limited research exploring the relationships among body, mind, and spirit well-being and the possibility of relapse across different categories of substance users. AIMS: The purpose of the current path analysis was to examine the relationship between body–mind–spirit well-being and the possibility of relapse intention as well as other relevant predictors in people who had a history of substance use. METHODS: A cross-sectional survey was used. Participants were recruited in Southern Taiwan between December 2015 and June 2016. Data were collected from 467 participants who had a history of using controlled substances. RESULTS: Path analysis results revealed that body–mind–spirit well-being was negatively predictive of the possibility of relapse intention. Out of several predictors, stress influence and duration of substance use had direct effects on body–mind–spirit well-being and the possibility of relapse intention, respectively. Stress influence and duration of substance use were associated with decreased body–mind–spirit well-being and increased relapse intention scores. In addition, no history of health problems and male gender were associated with increased body–mind–spirit well-being. CONCLUSIONS: Stress management and the duration of substance use play an important role in body–mind–spirit well-being and relapse intention in people with a history of substance use. Health care professionals could teach substance users coping strategies to address their stress and problems, which may improve their health and reduce the possibility of relapse intention.


2020 ◽  
Vol 117 (2) ◽  
pp. 022106 ◽  
Author(s):  
Sayleap Sdoeung ◽  
Kohei Sasaki ◽  
Katsumi Kawasaki ◽  
Jun Hirabayashi ◽  
Akito Kuramata ◽  
...  

Author(s):  
C.-H. Liu ◽  
H.-Y. Liu ◽  
C.-W. Lin ◽  
S.-J. Chou ◽  
Y.-W. Chang ◽  
...  
Keyword(s):  

2009 ◽  
Vol 156 (5) ◽  
pp. H384 ◽  
Author(s):  
Toshihiro Kugimiya ◽  
Hiroshi Goto ◽  
Nobuyuki Kawakami ◽  
Junichi Nakai ◽  
Yoichiro Yoneda ◽  
...  

Author(s):  
Hung-yi Liu ◽  
Chung-wei Lin ◽  
Szu-jui Chou ◽  
Wei-ting Tu ◽  
Chih-hung Liu ◽  
...  

2018 ◽  
Vol 8 (3) ◽  
pp. 29 ◽  
Author(s):  
Fahad Almasoudi ◽  
Mohammad Matin

Single-phase transformerless inverters are broadly studied in literature for residential-scale PV applications due to their great advantages in reducing system weight, cost and elevating system efficiency. The design of transformerless inverters is based on the galvanic isolation method to eliminate the generation of leakage current. Unfortunately, the use of the galvanic isolation method alone cannot achieve constant common mode voltage (CMV). Therefore, a complete elimination of leakage current cannot be achieved. In addition, modulation techniques of single-phase transformerless inverters are designed for the application of the unity power factor. Indeed, next-generation PV systems are required to support reactive power to enable connectivity to the utility grid. In this paper, a proposed single-phase transformerless inverter is modified with the clamping method to achieve constant CMV during all inverter operating modes. Furthermore, the modulation technique is modified by creating a new current path in the negative power region. As a result, a bidirectional current path is created in the negative power region to achieve reactive power generation. The simulation results show that the CMV is completely clamped at half the DC link voltage and the leakage current is almost completely eliminated. Furthermore, a reactive power generation is achieved with the modified modulation techniques. Additionally, the total harmonic distortion (THD) of the grid current with the conventional and a modified modulation technique is analyzed. The efficiency of the system is enhanced by using wide-bandgap (WBG) switching devices such as SiC MOSFET. It is observed that the efficiency of the system decreased with reactive power generation due to the bidirectional current path, which leads to increasing conduction losses.


2017 ◽  
Vol 7 (2) ◽  
pp. 78-85 ◽  
Author(s):  
Heikki Mansikka ◽  
Don Harris ◽  
Kai Virtanen

Abstract. The aim of this study was to investigate the relationship between the flight-related core competencies for professional airline pilots and to structuralize them as components in a team performance framework. To achieve this, the core competency scores from a total of 2,560 OPC (Operator Proficiency Check) missions were analyzed. A principal component analysis (PCA) of pilots’ performance scores across the different competencies was conducted. Four principal components were extracted and a path analysis model was constructed on the basis of these factors. The path analysis utilizing the core competencies extracted adopted an input–process–output’ (IPO) model of team performance related directly to the activities on the flight deck. The results of the PCA and the path analysis strongly supported the proposed IPO model.


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