상하이 상장회사의 소유구조 및 이익관리와 대리인비용 간의 관계

Quan,Yiqing(권예경),Li-Rong,Zheng(정력용) 한국국제회계학회 2011 국제회계연구 Vol.0 No.37

본 연구는 중국기업의 소유구조, 이익관리와 대리인비용 간의 관계를 규명하고자 하였다. 본 연구에서는 중국 상하이 증권거래소에 상장되어 있는 기업들 중에서 상장 폐지, 금융보험업, ST(Special Treatment)기업, 재무자료 결측치 기업 및 극단치를 보이는 기업들을 제외한 675개를 연구대상으로 하고 2008회계연도 데이터를 사용한다. 기업소유구조와 관련된 기타자료 및 재무자료는 북경 SinoFin 정보 서비스 유한회사가 제공한 CCER 데이터베이스를 이용하였다. 본 연구결과는 중국 상하이 증권시장의 상장회사들에서 대리인비용은 소유권의 집중 정도가 높아질수록 판매 및 관리비 비율이 낮아지고 자산회전율이 높아지는 것으로 나타나 소유권의 집중정도가 높은 기업의 경우 대주주가(특히 1대주주) 경영자에 대한 감시·감독 역할이 대리인비용을 통제할 수 있음을 보여주고 있다. 또, 소유권의 견제정도가 높은 기업일수록 기업의 대리인비용은 상대적으로 높다는 연구결과를 얻었다. 이러한 현상은 선행연구들의 결과와 마찬가지로 대주주가 몇 명 있는 경우에서 기업경영에 대한 책임을 지는 주주가 분명하지 않기 때문에 대주주들의 무임승차문제가 발생하고 있음을 의미한다. 일반적으로 이익관리를 많이 하는 기업일수록 영업외 비용비율이 높아 지지만 소유권의 견제정도가 높은 기업일수록 이익관리의 상호작용을 통하여 그 비율이 더욱더 증가됨을 알 수 있다. 그리고 중국의 상장회사들에서 이루어지고 있는 이익 관리가 효율적인 이익관리가 아니고 기회주의적인 이익관리라는 증거를 얻었다. 즉, 중국 상장회사들의 경영자는 자신의 이익을 극대화하기 위한 이기적인 목적으로 이익조정을 하고 있다고 보아야 할 것이다. This study is focused on the effects of ownership structure, earnings management on the agency costs in Chinese listed companies. The processes of this empirical study are establishment of research hypotheses, elaboration of test model, definition and measurement of 675 sample companies, empirical analysis and interpretation of results. The data used in this research are provided from SSEportal and SinoFin information service co. in China. The proxies of ownership structure are ownership concentration, outside blocck-holders and proxies of earnings management is absolute discretionary accruals of modified Jones, model. the proxies of agency costs are firm size, ratio of sale and management expenses per operating revenues, ratio of operating revenues per total assets, ratio of operating revenues per other operating expenses, control variables are ratio of current liabilities/total assets, ratio of net cash inflow per total liabilities, industry dummy variable. The results of this study are as followings. First, the ownership concentrated companies tried to reduce agency cost actively rather than decentralized companies in China. Second, the interaction between ownership concentration and earnings management take negative effects on agency cost. Therefore we can say that the listed companies on Shanghai Stock Exchange implemented earnings management opportunistically.

권협(權悏) 고급사(告急使)의 연행(燕行)에 대하여

劉寶全(Liu Bao?quan) 가천대학교 아시아문화연구소 2008 아시아문화연구 Vol.14 No.-

During the period of Chosun Dynasty, the works named Record of Trip in Yan(燕) by some envoy from Korea to China provided a large number of attractive and rare historical data to future generations. It’s also a complement to something not concerned in official history. These travel notes are important information on researching the history of relation between China and Korea. In the Record of Trip in Yan of Seoktanggong(石塘公), which was written in the style of diary, Kuang Hyeop(權?) recorded the process of his trip in Ming Dynasty as a envoy before the year of 1597 when the War against Japanese Troops happened. The thesis takes the record as basic information, and analyzes the event of requesting rescue when Kuang Hyeop was in Beijing. He went in for purchasing military supplies and the process of determining whether the Ming Dynasty would rescue Chosun. The diplomatic mission of Kuang Hyeop was an important part of the relation between China and Korea during the period of Imjin Waeran. Also, his Record of Trip in Yan provided strong evidence for researching the relation between the two countries.

One simple, rapid and economical method for ploidy detection of Trichogramma dendrolimi Matsumura (Hymenoptera Trichogrammatidae)

Liu Quan-quan,Zhang Chen,Zhou Jin-cheng,Dong Qian-jin,Huo Liang-xiao,Dong Hui 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.2

Ploidy diversity provides valuable scientific information, thus making the detection technique of ploidy important. However, traditional methods of cytological observation and flow cytometry are either laborious or expensive. We here report a simple and rapid, effective and economical quantitative PCR (qPCR) approach to determine the ploidy of a parasitoid species Trichogramma dendrolimi Matsumura, an economically important biocontrol agent. We applied a mitochondrial gene cytochrome oxidase (COI) and a nuclear gene forkhead to evaluate the mitochondrial number per nuclear copy in a thelytokous Wolbachia-infected strain of T. dendrolimi and its bisexual uninfected counterparts. The 2 −ΔCq values calculated from C q values which resulted from qPCR experiments were significantly larger in haploid males than that in diploid females. Haploid males possessed about 2.69 times mitochondrial number per nuclear copy as diploid females. Not a single significant difference was found between diploid females from thelytokous and bisexual strains. Based on the differences in relative mitochondrial content, we were allowed to distinguish between haploid males and diploid females. Moreover, the number of mitochondria significantly decreased with higher ploidy level but was not affected by Wolbachiainfection. Our study supplied an available tool to investigate the ploidy diversity in sex determination of T. dendrolimi and thelytokous manipulation of Wolbachia, which is the crucial step to further study their underlying mechanisms. This will in turn contribute to the biocontrol efficiency by enhancing the female production and hence the parasitism rate.

Estimating Workers’ Locations in Industrial Sites

Quan T. Ngo(오딴콴),Dat Van Anh Duong(즈엉 반 안 닷),Doi Thi Lan(도이 티 란),Seokhoon Yoon(윤석훈) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.11

Worker location estimation plays an important role in reducing the amount of time for rescue operations when an incident occurs, thus improves worker safety. In this paper, we address the problem of estimating the current location of a worker in the working sites, given his/her historical location records. A large-scale dataset of Wi-Fi traces is used to train and test the proposed model.

The Impact of Negative Online Review on Consumer’s Purchase Intention: A Dual-Process Perspective

Quan Xiao 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.12

Online review is an important reference for online consumer’s purchase decision, among which the effect of negative online review is even greater. However, there is still a lack of attention on the impact of negative online review compared to positive one. Drawing on the dual-process theory, this study develops a research model to examine important factors affecting consumer’s purchase intention, mainly focusing on negative online review. An online survey involving users of online shopping websites such as JD.com, Taobao.com and Amazon.cn is conducted to empirically test the proposed research model. The result shows that quality of negative review, as a systematic/central factor, is the primary factor affecting consumer’s purchase intention, while heuristic/peripheral factors such as source credibility andquantity of negative review are also evaluated by consumer when making purchase decision.It is also examined that quality of negative review has a stronger impact on purchase intention when the consumer has a high self-efficacy level. Finally we discuss the theoretical and practical implications based on the findings.

Landslide Susceptibility Analysis in Baekdu Mountain Area Using ANN and AHP Method

Quan, Hechun,Moon, Hongduk,Jin, Guangri,Park, Sungsik Korean Geo-Environmental Society 2014 한국지반환경공학회논문집 Vol.15 No.12

To analyze the landslide susceptibility in Baekdu mountain area in china, we get two susceptibility maps using AcrView software through weighted overlay GIS (Geographic Information System) method in this paper. To assess the landslide susceptibility, five factors which affect the landslide occurrence were selected as: slope, aspect, soil type, geological type, and land use. The weight value and rating value of each factor were calculated by the two different methods of AHP (Analytic Hierarchy Process) and ANN (Artificial Neural Network). Then, the weight and rating value was used to obtain the susceptibility maps. Finally, the susceptibility map shows that the very dangerous areas (0.9 or higher) were mainly distributed in the mountainous areas around JiAnShi, LinJiangShi, and HeLongShi near the china-north Korea border and in the mountainous area between the WangQingXian and AnTuXian. From the contrast two susceptibility map, we also Knew that The accuracy of landslide susceptibility map drew by ANN method was better than AHP method.

Predicting the Fracture Characteristics of Concrete Using Ensemble and Meta-heuristic Algorithms

Quan Zhang,Xiaojun Zhou 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.7

Fracture properties are crucial for the design and application of concrete materials. Thefracture energy which represents the fracture performance of concrete always suffers theinfluence of various factors, making it difficult to accurately predict the fracture energy ofconcrete with traditional methods. Thus, the artificial intelligence (AI) approaches areemployed to establish the predictive models for the concrete fracture energy. Additionally, thefirefly meta-heuristic algorithm (FA) is used to search for the optimum model hyper-parameters. The FA algorithm is proved to be efficient in tuning the hyper-parameters of the three models,and optimum values are obtained within ten iterations. Compared with the single classification andregression tree algorithm (CART), the ensemble algorithm appears to be more accurate andgeneralizable. Moreover, through the importance evaluation of different features in theoptimum predictive model, the aggregate characteristics (aggregate size distribution andmaximal aggregate size) and specimen size have been proven to be dominant factors for thepredictive models, which should be carefully considered in predictive work regardingconcrete fracture properties.

Endless-Ocean

Quan Ying 한국콘텐츠학회 2014 ICCC International Digital Design Invitation Exhib Vol.10 No.2

Preparative Isolation of 8-Methoxypsoralen from the Rhizomes of Pulsatilla chinensis using High-speed Counter-current Chromatography

Quan, Gui-Hua,Oh, Sei-Ryang,Song, Hyuk-Hwan,Lee, Hyeong-Kyu,Chin, Young-Won The Korean Society for Applied Biological Chemistr 2011 Applied Biological Chemistry (Appl Biol Chem) Vol.54 No.4

A simple and rapid purification method of 8-methoxy-psoralen from the crude methanol extract of the rhizomes of Pulsatilla chinenis was established using high-speed counter-current chromatography (HSCCC). From the crude extract (233.2 mg), 8-methoxypsoralen (10.0 mg) was separated for the first time in one-step, using a two-phase solvent system composed of n-hexane/ethyl acetate/methanol/water (5:5:5:5, v/v/v/v). The isolated amount of this compound was found to be equivalent to 89% of the amount observed quantitatively in the crude methanolic extract. The final purity of the 8-methoxy-psoralen was determined to be over 98% by ultra-performance liquid chromatography-UV analysis.

Effect of Oolong Tea Extracts on Plasma Glucose Level and Antioxidant System in Diabetic Rats

Quan, Zhe-Jiu,Seo, Jung-Sook The Korean Society of Community Nutrition 2006 Journal of community nutrition Vol.8 No.4

The present study was conducted to investigate the effect of oolong tea extract on blood glucose level and antioxidant system in diabetic rats. The Sprague-Dawley rats were fed on AIN-76 based experimental diets containing 1 % oolong tea extract for 6 weeks. They were induced to be diabetic by receiving streptozotocin (45mg/kg BW) intramuscularly. Blood glucose, blood and hepatic concentration of vitamins A and E, and antioxidant enzyme activities were measured. Oolong tea extract feeding decreased the plasma glucose in diabetic rats. Dietary supplementation of oolong tea extract did not affect antioxidative enzyme activities such as superoxide dismutase, glutathione peroxidase and catalase in diabetic rats. The plasma level of retinol was increased in diabetic rats by feeding oolong tea extract. Plasma and hepatic levels of ${\alpha}$-tocopherol were higher in diabetic rats fed oolong tea extract. In conclusion, these results suggest that oolong tea extract consumption might reduce the plasma glucose in diabetic rats and protect the oxidative damage from diabetic stress to some extent.