Application of Robotic Welding Technology to the Continuity Plate Weld Within a Steel Built-up Box Column in Buildings

Chung-Che Chou,Gee‑Jin Yu,Kung‑Juin Wang,Wei‑Tze Chang,Chiun‑Lin Wu,Charlene Chin‑Jie Zhao,Chun‑Yao Yang,Ming‑Ti Chou 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.9

This paper presents a study to investigate the feasibility of using robotic welding technologies to weld the continuity plate and the column flange plate during manufacturing steel built-up box columns in buildings. Specimens designed to emulate the key components in the steel beam-to-column moment connections for Special moment frame were fabricated and welded using a proposed automated procedure that performs multi-layer, multi-pass welding for thick steel plates. Effects of controlling parameters on robotic welding results that includes the manner of bead stacking, wire feed speed, travel speed, working angle, arc voltage, the path of the welding pass, and the methods to start and finish welding passes were investigated. The quality of the welded products was assessed by visual inspection and ultrasonic testing (UT). Further mechanical tests including tensile tests, bending tests, and cyclic loading tests were carried out on selected welded products that passed the UT examination. The test results indicated that the robotic welds showed no visible damage or cracks, met requirements specified in the AWS specification, and exhibited satisfactory strength and ductility.

Incidence and risk factors of hardware-related complications after proximal femoral osteotomy in children and adolescents

Chung, Myung Ki,Kwon, Soon-Sun,Cho, Byung Chae,Lee, Gye Wang,Kim, Jaeyoung,Moon, Seung Jun,Lee, Jae Woo,Chung, Chin Youb,Sung, Ki Hyuk,Lee, Kyoung Min,Park, Moon Seok Wolters Kluwer Health, Inc. All rights reserved. 2018 Journal of pediatric orthopedics. Part B Vol.27 No.3

Proximal femoral osteotomy has been used in cerebral palsy, Perthes disease, hip dysplasia, idiopathic femoral anteversion, and various hip diseases in children and adolescents. Conventionally, a blade plate (BP) has been used. However, the pediatric locking compression plate (LCP) has recently been applied widely. We compared the hardware-related complications of the BP and the LCP as well as the factors influencing these complications in patients who have undergone a proximal femoral osteotomy in children and adolescents. We enrolled consecutive patients aged less than or equal to 20 years who had undergone proximal femoral osteotomy with BP or LCP between May 2003 and December 2014, and who were followed up until 6 months after hardware removal. Following consensus building, hardware-related complications were identified from the patients’ medical records and hip radiographs. Patient age, sex, type of plate, and Gross Motor Function Classification System (GMFCS) level in cerebral palsy patients were evaluated as possible risk factors, and a generalized estimating equation was used to assess the risk factors for hardware-related complications. A total of 417 hips from 251 patients were finally included in this study. Seven losses of fixation around the plate (five patients, 3.0%) occurred in the BP, three implant-related fractures (three patients, 3.6%) occurred in the LCP, and there was no significant difference (P=0.74). All hardware-related complications occurred in cerebral palsy patients, and the implant-related fractures occurred in patients with GMFCS IV/V. The risk of complications increased with age (P=0.002). The risk of loss of fixation around the BP is a well-known complication. However, LCP is not without hardware-related complications. The LCP provides strong stability of fixation. However, it is speculated that the LCP is related to implant-related fractures because of the stress shielding effect. Therefore, care should be exercised when using a locking plate in patients with osteoporosis, such as cerebral palsy with GMFCS IV/V. Level of Evidence: Therapeutic Level III.

Latent tuberculosis infection increases in kidney transplant recipients compared with transplant candidates: a neglected perspective in tuberculosis control

( Chin-chung Shu ),( Meng-kun Tsai ),( Shu-wei Lin ),( Chih-yuan Lee ),( Jann-yuan Wang ),( Chong-jen Yu ) 대한결핵 및 호흡기학회 2019 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.127 No.-

Background: The prevalence and incidence of latent tuberculosis infection (LTBI) in patients with kidney transplant remains unclear. Methods: In this prospective study, we enrolled kidney transplant candidates (KTCs) and recipients (KTRs) from 2014 to 2018. We defined LTBI as a positive result of QuantiFERON-TB Gold In-tube (QFT). We analyzed the predictors for LTBI acquisition and followed QFT test for 2 years among those initially without LTBI. Results: Of 425 patients enrolled, 305 (71.8%) patients belonged to the KTC group and 120 (28.2%) to the KTR group. The initial QFT showed positive results in 33 (10.8%) and 25 (20.8%) in the KTC and KTR groups, respectively (p=0.007). The QFT response value in LTBI patients was higher in the KTR group than in the KTC group (1.85 vs. 1.06 IU/ml, p=0.046). Multivariate logistic regression showed that old age, absence of Bacillus Calmette-Guerin scar, and KTR group were independent factors for positive LTBI. For participants with initial negative QFT, positive QFT conversion within 2-year follow-up was higher after kidney transplantation (20%) than in KTCs (5.5%) (p=0.032). Conclusion: This study is the first cohort to follow up LTBI status in patients with kidney transplant and shows its higher prevalence and incidence in those belong to KTR. It indicates that surveillance of LTBI after renal transplantation is important.

Migraine Disability Awareness Campaign in Asia: Migraine Assessment for Prophylaxis

Wang, Shuu-Jiun,Chung, Chin-Sang,Chankrachang, Siwaporn,Ravishankar, K.,Merican, Julia Shahnaz,Salazar, Gerard,Siow, Charles,Cheung, Raymond Tak-Fai,Phanthumchinda, Kammant,Sakai, Fumihiko Blackwell Publishing Inc 2008 Headache Vol.48 No.9

<P>Objectives.—</P><P>This study aimed to survey the headache diagnoses and consequences among outpatients attending neurological services in 8 Asian countries.</P><P>Methods.—</P><P>This survey recruited patients who consulted neurologists for the first time with the chief complaint of headache. Patients suffering from headaches for 15 or more days per month were excluded. Patients answered a self-administered questionnaire, and their physicians independently completed a separate questionnaire. In this study, the migraine diagnosis given by the neurologists was used for analysis. The headache symptoms collected in the physician questionnaire were based on the diagnostic criteria of migraine proposed by the International Classification of Headache Disorders, second edition (ICHD-2).</P><P>Results.—</P><P>A total of 2782 patients (72% females; mean age 38.1 ± 15.1 years) finished the study. Of them, 66.6% of patients were diagnosed by the neurologists to have migraine, ranging from 50.9% to 85.8% across different countries. Taken as a group, 41.4% of those patients diagnosed with migraine had not been previously diagnosed to have migraine prior to this consultation. On average, patients with migraine had 4.9 severe headaches per month with 65% of patients missing school, work, or household chores. Most (87.5%) patients with migraine took medications for acute treatment. Thirty-six percent of the patients had at least one emergency room consultation within one year. Only 29.2% were on prophylactic medications. Neurologists recommended pharmacological prophylaxis in 68.2% of patients not on preventive treatment. In comparison, migraine prevalence was the highest with ICHD-2 “any migraine” (ie, migraine with or without migraine and probable migraine) (73.3%) followed by neurologist-diagnosed migraine (66.6%) and ICHD-2 “strict migraine” (ie, migraine with or without aura only) (51.3%). About 88.6% patients with neurologist-diagnosed migraine fulfilled ICHD-2 any migraine but only 67.1% fulfilled the criteria of ICHD-2 strict migraine.</P><P>Conclusions.—</P><P>Migraine is the most common headache diagnosis in neurological services in Asia. The prevalence of migraine was higher in countries with higher referral rates of patients to neurological services. Migraine remains under-diagnosed and under-treated in this region even though a high disability was found in patients with migraine. Probable migraine was adopted into the migraine diagnostic spectrum by neurologists in this study.</P>

Molecular Identification of Diphyllobothrium latum from a Pediatric Case in Taiwan

Yu-Chin An,Chia-Cheng Sung,Chih-Chien Wang,Hsin-Chung Lin,Kuang-Yao Chen,Fu-Man Ku,Ruei-Min Chen,Mei-Li Chen,Kuo-Yang Huang 대한기생충학열대의학회 2017 The Korean Journal of Parasitology Vol.55 No.4

Bactericidal Activity of Soymilk Fermentation Broth by In Vitro and Animal Models

Yi-Ping Chin,Ko-Chung Tsui,Mei-Chieh Chen,Cheng-Yi Wang,Chin-Yuh Yang,Yuh-Ling Lin 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.6

Soybean fermentation broth (SFB) exhibits potent antibacterial activity against different species of bacteria in in vitro assays and animal models. Four isoflavone compounds—daidzin, genistin, genistein, and daidzein—of SFB were analyzed and quantified by high-performance liquid chromatography. In the in vitro test, daidzin and daidzein had more potent antibacterial activity than genistin. The minimum inhibition concentration values for these bacteria of SFB ranged from 1.25%to 5%, and the minimum bactericidal concentration values of strains ranged from 2.5% to 10%, depending on the species or strain. Vancomycin-resistant Entercoccus faecalis (VRE) strains were also tested for susceptibility to SFB in two species of animal model: the Sprague–Dawley rat and the BALB/c mouse. SFB-fed Sprague–Dawley rats showed excellent elimination efficiency against VRE, close to 99% compared with the phosphate-buffered saline–fed control group. In the BALB/c mouse model, SFB antibacterial activity was 65–80% against VRE compared with the control. In conclusion, SFB contains natural antibacterial substances such as daidzin, genistin, and daidzein that inhibit bacterial growth.

Red Bean Extract Inhibits Lipopolysaccharide-Induced Inflammation and H2O2-Induced Oxidative Stress in RAW 264.7 Macrophages

Wen-Wan Chao,Yun-Chin Chung,I-Ping Shih,Hsun-Yen Wang,Su-Tze Chou,Cheng-Kuang Hsu 한국식품영양과학회 2015 Journal of medicinal food Vol.18 No.7

Red bean (Phaseolus radiatus L. var. Aurea) is a leguminous seed and mainly used as one of the popular ingredients in oriental desserts. The objective of this study was to evaluate the anti-inflammatory activity of 50 g/kg ethanolic extract of red bean (RBE) by measuring lipopolysaccharide (LPS)-induced expressions of nitric oxide (NO), inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX-2), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in RAW 264.7 macrophages. On the other hand, the antioxidant activity of RBE was determined by thiobarbituric acid reactive substances method and comet assay using H2O2-induced macrophages. The results showed that RBE at the concentrations of 50–200 μg/mL can significantly suppress the inflammatory responses in LPS-stimulated macrophages through the reduction of cellular NO and downregulation of the gene expressions of iNOS, COX-2, TNF-α, and IL-6 in a dose-dependent manner. Furthermore, RBE can diminish H2O2-induced oxidative damage in RAW 264.7 macrophage. Phenolic compounds and cyanidin-3-Oglucoside from BRE may have efficacy as overall in vitro anti-inflammatory and antioxidant agents. Red bean exerts an antiinflammatory response and has potential as a health-promoting ingredient.

A Study on the U.S.A`s Evolving Policy and Possible Interactions of the U.S.A -China in the Korean Unification Process

왕위민 ( Wei Min Wang ),진정미 ( Chung Mee Chin ) 한중사회과학학회 2013 한중사회과학연구 Vol.11 No.4

최근 오마바 정부의 북한정권에 대한 ``전략적 인내정책``은 한반도의 통일정책 범주 내에서 바라보면 실질적으로 상당한 인식의 변화를 동반하고 있음을 엿볼수 있다. 즉 한반도의 분단상황이라는 시각에서 보면 이는 분단의 ``평화적 관리``를 넘어 장차 ``통일한국``에 적합한 통일정책으로 수정한 것이다. 한반도에서 통일과정이나 통일후의 주변국들의 이해관계가 첨예하게 얽혀 있기 때문에 이 정책은 이명박 정부시기의 한반도의 ``분할관리`` 정책에서 ``통일준비``라는 전략적 패러다임의 변화를 추구함으로서 통일정책을 구상하고 추진하는데 강력한 영향을 미쳤다. 한국과 미국간의 새로운 통일정책에 대한 공동인식은 북한정권의 비핵화와 호전적인 북한을 효과적으로 다루는데 많은 문제점을 야기하기도 했다. 결과적으로 합리적인 통일정책도구의 부재를 초래하였고, 더 나아가 통일 과정에서 통일 한국의 핵보유, 주한미군의 주둔, 영토와 국경, 피난유민, 경제재건과 사회통합 문제 등 다양한 안보관련 쟁점들을 해결하기 바라는 의지를 반영하고 있는 것이다. 이와 같은 맥락에서 이 논문은 먼저 통일과정과 통일 후 한국에 대한 미국의 정책적 진화를 탐구하고, 최근의 미국의 한반도 통일정책에 포함된 신사고의 특징뿐만 아니라 이 시점에서 미국의 아시아 지역과 글로벌 지역의 관리를 위한 함축적이고 전략적인 의미와 내용을 탐구하는 것이다. 그리고 본 논문은 한반도 통일에 대한 북한의 붕괴·전쟁·평화적 방법에 의한 세가지 시나리오를 설정해서 이 범주 내에서 미국과 중국의 한반도에 대한 정책적 선택과 상호행위 작용을 분석해보는 것이며, 더 나아가 단기간 내에 미-중간 관계의 발전방향을 예측함으로서 본 논문은 한반도 통일과정에서 이해당사자인 한국과 미국 그리고 중국정부에 각각 의 일정과 메모렌덤에 따라 통일과정에서 발생할 수 있는 약간의 전략적 적대감에 대한 경고성 의미를 제시하고져 한다. In recent years, the U.S. Obama administration`s strategic patience policy towards DPRK has been actually accompanied by a perceived change in its Korean unification policy, i.e., "from peaceful management to a unified Korea", which is strongly affected and promoted by Lee Myung-bak administration`s pursuit of a paradigm shift in its unification strategy "from managing division to preparing for unification". The coincidence of the U.S.A. and ROK`s new unification strategy exposed their desperation with DPRK`s commitment of denuclearization and the lack of effective policy tools in copying with the belligerent DPRK, reflected the shared desire to solve DPRK`s nuclear issue and related security challenges by promoting the unification process. This paper will firstly explore the U.S.A.`s evolving policy towards Korean unification, analyzing the characteristics of the new thinking embodied in the recent unification policy as well as the U.S.A. undeclared assumptions and strategic calculations at this juncture. The paper then goes further to predict the evolving direction of the U.S.A.-China relations in the short run, hence figuring out respective policy choices and interactions in three scenarios of Korean unification. The paper concludes by warning three governments of U.S.A, China and ROK against some strategic aversions in the unification process to serve as their memorandum.

가長式領導的結구及其對員工敬업度的影響 -控製點的調節效應-

왕회명 ( Huai Ming Wang ),진정미 ( Chung Mee Chin ) 한중사회과학학회 2014 한중사회과학연구 Vol.12 No.3

The paternalistic leadership style is rooted in the oriental cultural background and is different from the western leadership styles. Currently most researchers believe that the paternalistic leadership consists of three dimensions: authoritarian leadership, benevolent leadership and moral leadership. Existing studies show that the moral and benevolent leadership styles have positive influences on the employees’ work attitudes and behaviors. However, there exists a big difference on behalf of the role of the authoritarian leadership. For example, some researchers believe that the authoritarian leadership has negative effect on the employees’ work attitudes and behaviors; some believe that the effect is not significant; and some even believe the effect is positive. Based on the data analysis of 761 surveyed employees, it is found that the authoritarian leadership consists of two dimensions: zhuan-quan leadership and shang-yan leadership. The zhuan-quan leadership behavior has a negative impact on the employees’ work attitudes and behaviors, while the shang-yan leadership style has a positive impact on them. The four-dimension model can better explain the effectiveness of the paternalistic leadership and the existing academic differences. The benevolent, moral and Shang-Yan leaderships can enhance employees’ job engagement, but the zhuan-quan leadership behavior will reduce the employees’ job engagement. Further analysis shows that the employees’ point of control plays the role as a moderator between the benevolent leadership and the employees’ job engagement. Specifically, compared with the internally controlled employees, the externally controlled employees are more vulnerable to the influence of the benevolent leadership behaviors.

初生兒 呼吸困難症候의 臨床觀察

李賢淑,鄭求昌,王福鎭,陳東植 金原出版 1969 小兒科 Vol.10 No.6