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      • SCOPUS

        The Development and Implementation of a Low-Cost Integrated Control System for Aerial Survey

        Liqing,Zhou,Yan,Zhang,Shu,An,Zhenhao,Pan,Ke,Wang 보안공학연구지원센터 2015 International Journal of Control and Automation Vol.8 No.4

        This paper presents the development of a low-cost integrated control system for aerial survey based on pan-tilt and multi-sensor data fusion. The design of aerial vehicle route planning, pan-tilt mechanical structure and attitude estimation are discussed in detail. A route planning file containing flight paths and automatic exposure points is firstly derived by the route plan software to control the whole aerial photography task. As for the most challenging task, accurate attitude estimation, a custom Kalman filtering hardware module based on FPGA is introduced. The introduced module invokes the build-in multipliers of FPGA to achieve Kalman filtering hardware implementation, which leads to a rapid attitude estimation. After that mechanical structure of a specialized pan-tilt is designed and fabricated to adjust the camera attitude to the vertical direction of the ground plane. The practice aerial survey is also conducted to evaluate the accuracy and performance of designed control system. Our studies indicates that with the designed control system, it would be feasible to configure an aerial survey system while cooperate with professional aerial camera or some other civil cameras, which will make it easier to focusing on evaluation of aerial survey concepts and approaches.

      • KCI등재

        Recovery of Platinum from Spent Petroleum Catalysts by a Hydrometallurgical Method

        ( Pan Pan Sun ), ( Man Seung Lee ) 대한금속재료학회(구 대한금속학회) 2013 대한금속·재료학회지 Vol.51 No.12

        Platinum was recovered from the leaching solution of spent petroleum catalysts by solvent extraction. The spent catalysts were first roasted at 800 ℃ to eliminate volatile matter. Most of the platinum in the spent catalysts was dissolved at an optimum leaching condition in a mixture of HCl and H2O2. Separation of platinum from the leaching solution was accomplished by solvent extraction with Aliquat 336 after iron was removed by extraction with TBP. Platinum and iron were stripped from the loaded Aliquat 336 and TBP by using 1 M HClO4 and 0.1 M HCl, respectively. Finally, HCl in the raffinate was recovered by extraction with TEHA and then by stripping with water. The optimum conditions to dissolve platinum and to separate platinum by solvent extraction are reported together with the mass balance of the constituents of the spent catalysts in each step.

      • KCI등재

        방한 중국인들의 의료관광동기가 만족도 및 재방문의도에 미치는 영향 - 대구광역시를 중심으로 -

        적반반 ( Pan Pan Di ), 홍경완 ( Kyung Wan Hong ) 대한관광경영학회 2015 觀光硏究 Vol.30 No.3

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        의료기술의 발달로 인간의 수명이 늘어나면서 건강한 삶에 대한 욕구가 커지자, 웰빙과 로하스의 바람을 타고 ‘건강하게 잘 먹고 잘 살자'는 인식이 확산되기 시작하였고, 현재는 하나의 문화코드로 자리 잡게 되었다· 이러한 시대적 흐름의 변화에 따라 관광산업에 있어서도 관광과 건강을 접목한 상품이 나타나기 시작했고, 초기단계에서는 헬스 투어리즘의 개념으로 다루어 졌다· 하지만 이제 단순한 헬스 케어의 범위를 넘어서 질병의 치료에서부터 건강과 휴양프로그램을 포함하는 폭넓은 의미의 건강치료를 위해 다른 장소를 방문하고 여행하는 의료관광의 개념으로 발달하였다· 이러한 트렌드에 발 맞추어 본 연구에서는 대구광역시를 찾는 중국인 관광객들의 의료관광동기를 조사하였다· 구체적으로 의료관광동기가 전반적 만족과 재방문의도에 미치는 영향을 조사하였으며, 또한 전반적 만족이 재방문의도에 미치는 영향도 조사하였다· 표본추출은 대구 의료병원에서 일하는 중국 직원을 통해 대구 지역에 있는 방문율이 높은 병원 10곳과 중국의 여행사 3곳을 통하여 의료관광 완료 후 귀가하는 중국 의료관광객을 대상으로 중국어 설문지 총 200부를 배부하여 조사하였다· 조사결과 의료관광동기는 총 2요인(문화체험, 의료건강)으로 나타났으며, 2요인 모두 전반적 만족과 재방문 의도에 정의 영향을 미치는 것으로 나타났다· 문화체험요인이 전반적 만족에 미치는 영향이 의료건강보다 큰 것으로 나타났으며, 반면에 의료건강요인은 재방문의도에 문화적 체험보다 큰 영향을 미치는 것으로 나타났다· 이와 같은 연구결과를 바탕으로 대구중심권 병원들은 의료를 중심으로 주변 대구관광권의 패키지화, 그리고 경증환자를 위한 맞춤형 의료서비스를 도입하여야 할 것이다· The primary purpose of this study was to examine the relationships between medical tourism motivation, satisfaction and the revisit intention of Chinese visitors. In this study, the theories of medical tourism motivation and satisfaction have been adopted to explain Chinese visitors' revisit intention. In order to collect the data needed for this study, an on-site questionnaire was developed. Chinese and Korean language versions of the questionnaire were prepared. A systematic sample of subjects was obtained from Chinese visitors who have been to Korea. Data were collected through on-site surveys by face-to-face interviews conducted over 15 days in 2014. Three hypotheses were examined to represent the relationships between medical tourism motivation, satisfaction and revisit intention. The proposed hypotheses suggested that there are significant and positive relationships between medical tourism motivation, satisfaction and revisit intention. A statically significant and positive relationship between medical tourism motivation and satisfaction suggested that motivation influences the level of the visitor's satisfaction. At the same time, motivation influences the level of revisit intention. The result suggested that medical tourism motivation played an important role in the process of making satisfaction judgments. The findings of this study offer several managerial implications for Korean directors who make policy related to medical tourism. For example, the results of the evaluation can be used as background for allocating budgets and other management resources.

      • KCI등재

        중국의 IFRS 도입에 따른 연구개발비의 가치관련성

        풍반반(Feng Pan-pan), 전성일(Jeon Seong-il), 김정은(Kim Jeong-eun) 한국국제회계학회 2017 국제회계연구 Vol.0 No.73

        2007년부터 적용된 중국의 신기업회계기준에서 무형자산과 관련한 규정이 개정됨에 따라 연구개발비에 대한 공시가 요구되었고, 그 이후 중국 상장기업의 연구개발비 관련 공시의 질은 대폭 개선되었다. 본 연구는 사회주의 경제체제를 가진 중국의 자본시장을 대상으로 연구개발비의 가치 관련성과 기업소유구조에 따른 이들 기업의 회계정보에 대한 투자자들의 반응이 차별적인지를 분석하였다. 분석결과는 다음과 같다. 첫째, 기업의 자본화된 연구개발비와 비용화된 연구개발비는 기업가치에 유의한 양(+)의 영향을 미치는 것으로 나타났다. 이는 자본화된 연구개발비의 가치관련성을 검증한 결과로, 신기업회계기준에 의해 개정된 연구개발비의 조건부 자본화 정책이 지지되는 결과이다. 둘째, R&D 지출 비중이 높은 기업의 연구개발비는 낮은 기업 보다 기업가치에 미치는 영향이 높은 것으로 나타났다. 셋째, 기업소유특성에 따라 국유기업과 비국유기업 간의 가치관련성을 분석한 결과, 비국유기업의 연구개발비가 기업가치에 미치는 영향은 국유기업 보다 통계적으로 유의하게 높은 것으로 나타났다. From 2007, China"s New Accounting Standards was published, based on the revision of related of intangible assets, the requirement of disclosure for research and development was presented. And since 2009, the quality of disclosure for R&D information for China"s listed firms has improved greatly. The purpose of this study is to investigate the expenditure of R&D activities for China"s listed firms and value relevance, and in accordance with ownership properties, whether the investors" reaction on the accounting information for those firms will be discriminative or not is also tested in this research. Empirical results are as follows. First, In the case of total samples, when firms" R&D expenditure is higher, its R&D expenditure had greater share prices multiple as compared to other firms with lower one. Second, according to the percentage of R&D expenditure, these firms" accounting information showed discriminatory value relevance. In other words, these firms with high expenditure on R&D, their accounting informations showed higher value relevance as compared to firms with lower one. Third, according to ownership properties, these firms" accounting information had different value relevance. In other words, depending on the characteristics of ownership properties, we divided all the firms into private one and state-owned one, and private firms" accounting information"s value relevance was higher than state-owned firms.

      • KCI등재SCOPUS

        Effects of Traditional Chinese Cooking Methods on Formation of Heterocyclic Aromatic Amines in Lamb Patties

        Haitao,Guo,Zhenyu,Wang,Han,Pan,Xin,Li,Li,Chen,Weili,Rao,Yuan,Gao,Dequan,Zhang 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.3

        Different amounts of the potent mutagenic and/or carcinogenic heterocyclic aromatic amines (HAAs) areformed in muscle-based foods under different cookingmethods. HAAs (9 varieties) in lamb patties cooked usingtraditional Chinese cooking methods (roasting, frying, panfrying,and stewing in seasonings) were investigated. Thetotal HAAs contents in roasted, fried, pan-fried, and stewedpatties were 4.39-123.15 ng/g, 3.59-43.24 ng/g, 0.71-10.05ng/g, and 51.07-120.32 ng/g, respectively. Amounts of HAAsincreased as cooking time increased. 2-amino-1-methyl-6-phenylimidazo [4,5-b] pyridine (PhIP) was the dominantHAAs in deep roasted and fried samples, while 1-methyl-9H-pyrido [3,4-b] indole (Harman) and 9H-pyrido [3,4-b]indole (Norharman) were the main HAAs in pan-fried andstewed samples. Types and contents of HAAs formed atdifferent cooking times using different methods are unique. Stewing in seasoning generated a higher HAAs contentthan the high-temperature cooking methods roasting,frying, and pan-frying.

      • SCIESCOPUSKCI등재후보

        Viscoplastic analysis of thin-walled tubes under cyclic bending

        Pan,,Wen-Fung,Hsu,,Chien-Min Techno-Press 1999 Structural Engineering and Mechanics, An Int'l Jou Vol.7 No.5

        In this paper, different curvature-rates are controlled to highlight the characteristic of viscoplastic response in cyclic bending tests. The curvature-ovalization apparatus, which was designed by Pan et al. (1998), is used for conducting the curvature-controlled experiments on thin-walled tubular specimens for AISI 304 stainless steel under cyclic bending. The results reveals that the faster the curvature-rate implies, the fast degree of hardening of the metal tube. However, the ovalization of the tube cross-section increases when the curvature-rate increases.

      • Association of TNF-α-308 and -238 Polymorphisms with Risk of Cervical Cancer: A Meta-analysis

        Pan,,Feng,Tian,,Jing,Ji,,Chu-Shu,He,,Yi-Fu,Han,,Xing-Hua,Wang,,Yong,Du,,Jian-Ping,Jiang,,Feng-Shou,Zhang,,Ying,Pan,,Yue-Yin,Hu,,Bing Asian Pacific Organization for Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.11

        Published data on the associations between tumor necrosis factor-alpha (TNF-${\alpha}$) promoter -308G>A and -238G>A polymorphisms and cervical cancer risk are inconclusive. To derive a more precise estimation of the relationship, a meta-analysis was performed. Data were collected from MEDLINE and PubMed databases. Crude odds ratios (ORs) with 95% confidence intervals (CIs) were calculated in a fixed/random effect model. 13 separate studies including 3294 cases and 3468 controls were involved in the meta-analysis. We found no association between TNF-${\alpha}$-308G>A polymorphism and cervical cancer in overall population. In subgroup analysis, significantly elevated risks were found in Caucasian population (A vs. G: OR = 1.43, 95% CI = 1.00-2.03; AA vs. GG: OR = 2.09, 95% CI = 1.34-3.25; Recessive model: OR = 2.09, 95% CI = 1.35-3.25) and African population (GA vs. GG: OR = 1.53, 95% CI = 1.02-2.30). An association of TNF-${\alpha}$-238G>A polymorphism with cervical cancer was found (A vs. G: OR = 0.61, 95% CI = 0.47-0.78; GA vs. GG: OR = 0.59, 95% CI = 0.45-0.77; Dominant model: OR = 0.59, 95% CI = 0.46-0.77). When stratified by ethnicity, similar association was observed in Caucasian population (A vs. G: OR = 0.62, 95% CI = 0.46-0.84; GA vs. GG: OR = 0.59, 95% CI = 0.43-0.82; Dominant model: OR = 0.60, 95% CI = 0.44-0.83). In summary, this meta-analysis suggests that TNF-${\alpha}$-238A allele significantly decreased the cervical cancer risk, and the TNF-${\alpha}$-308G>A polymorphism is associated with the susceptibility to cervical cancer in Caucasian and African population.

      • KCI등재SSCISCOPUS

        The Anxiety Status of Chinese Medical Workers During the Epidemic of COVID-19: A Meta-Analysis

        Pan,Rong,Zhang,Liqing,Pan,Jiyang 대한신경정신의학회 2020 PSYCHIATRY INVESTIGATION Vol.17 No.5

        Objective To analysis the anxiety status of Chinese medical workers during the epidemic of COVID-19 by meta-analysis method. Methods CNKI, VIP, WanFang Data, SinoMed, PubMed, Cochrane, EMBASE, MEDLINE, Scopus, Google Scholar and other databases were searched to collect literature on the anxiety status of Chinese medical workers during the epidemic of COVID-19. The retrieval time is from the database construction to 11/03/2020. Meta-analysis was performed on the included articles by using Stata 16.0 software. Results A total of 7 articles were included, with a total sample size of 7,741 people. Meta-analysis using the random effects model showed that the anxiety score of Chinese medical during the epidemic of COVID-19 was significantly higher than that of the national norm in each study, the difference was statistically significant [SMD (95% CI)=1.145 (0.705–1.584), p<0.001]. Conclusion The anxiety level of Chinese medical workers has increased significantly during the epidemic of COVID-19.

      • SCIESSCISCOPUSKCI등재

        The Anxiety Status of Chinese Medical Workers During the Epidemic of COVID-19: A Meta-Analysis

        Rong,Pan,Liqing,Zhang,Jiyang,Pan 대한신경정신의학회 2020 PSYCHIATRY INVESTIGATION Vol.17 No.5

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        Objective To analysis the anxiety status of Chinese medical workers during the epidemic of COVID-19 by meta-analysis method. Methods CNKI, VIP, WanFang Data, SinoMed, PubMed, Cochrane, EMBASE, MEDLINE, Scopus, Google Scholar and other databases were searched to collect literature on the anxiety status of Chinese medical workers during the epidemic of COVID-19. The retrieval time is from the database construction to 11/03/2020. Meta-analysis was performed on the included articles by using Stata 16.0 software. Results A total of 7 articles were included, with a total sample size of 7,741 people. Meta-analysis using the random effects model showed that the anxiety score of Chinese medical during the epidemic of COVID-19 was significantly higher than that of the national norm in each study, the difference was statistically significant [SMD (95% CI)=1.145 (0.705–1.584), p<0.001]. Conclusion The anxiety level of Chinese medical workers has increased significantly during the epidemic of COVID-19.

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