• 제목/요약/키워드: Practitioners

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온라인 구전정보 수용자의 지각된 정보유용성과 자기효능감이 구전정보 수용의도에 미치는 영향에 관한 연구: 의견고수와 구전수용의 비교 (Investigating the Influence of Perceived Usefulness and Self-Efficacy on Online WOM Adoption Based on Cognitive Dissonance Theory: Stick to Your Own Preference VS. Follow What Others Said)

  • 이정현;박주석;김현모;박재홍
    • Asia pacific journal of information systems
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    • 제23권3호
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    • pp.131-154
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    • 2013
  • New internet technologies have created a revolutionary new platform which allows consumers to make decision about product price and quality quickly and provides information about themselves through the transcript of online reviews. By expressing their feelings toward products or services on virtual opinion platforms, users extend their influence into cyberspace as electronic word-of-mouth (e-WOM). Existing research indicates that an impact of eWOM on the consumer decision process is influential. For both academic researchers and practitioners, investigating this phenomenon of information sharing in online website is essential given the increasing number of consumers using them as sources of purchase decisions. It is worthwhile to examine the extent to which opinion seekers are willing to accept and adopt online reviews and which factors encourage adoption. Discerning the most motivating aspects of information adoption in particular, could help electronic marketers better promote their brand and presence on the internet. The objectives of this study are to investigate how online WOM influences a persons' purchase decision by discovering which factors encourage information adoption. Especially focused on the self-efficacy, this research investigates how self-efficacy affects on information usefulness and adoption of online information. Although people are exposed to same review or comment about product or service, some accept the reviews while others do not. We notice that accepting online reviews mainly depends on the person's preference or personal characteristics. This study empirically examines this issue by using cognitive dissonance theory. Specifically, in the movie industry, we address few questions-is always positive WOM generating positive effect? What if the movie isn't the person's favorite genre? What if the person who is very self-assertive so doesn't take other's opinion easily? In these cases of cognitive dissonance, is always WOM generating same result? While many studies have focused on one direct of WOM which indicates positive (or negative) informative reviews or comments generate positive (or negative) results and more (or less) profits, this study investigates not only directional properties of WOM but also how people change their opinion towards product or service positive to negative, negative to positive through the online WOM. An experiment was conducted quantitatively by using a sample of 168 users who have experience within the online movie review site, 'Naver Movie'. Users were required to complete a survey regarding reviews and comments taken from the real movie page. The data reflected user's perceptions of online WOM information that determined users' adoption level. Analysis results provide empirical support for the proposed theoretical perspective. When user can't agree with the opinion of online WOM information, in other words, when cognitive dissonance between online WOM information and users' preference occurs, perceived self-efficacy significantly decreases customers' perception of usefulness. And this perception of usefulness plays an important role in determining users' intention to adopt online WOM information. Most of researches have been concentrated on characteristics of online WOM itself such as quality or vividness of information, credibility of source and direction of online WOM, etc. for describing effect of online WOM, but our results suggest that users' personal character (e.g., self-efficacy) plays decisive role for acceptance of online WOM information. Higher self-efficacy means lower possibility to accept the information that represents counter opinion because of cognitive dissonance, whereas the people that have lower self-efficacy are willing to accept the online WOM information as true and refer to purchase decision. This study suggests a model for understanding role of direction of online WOM information. Also, our result implicates the importance of online review supervision and personalized information service by confirming switching opinion negative to positive is more difficult than positive to negative through the online WOM information. This implication would help marketers to manage online reviews of their products or services.

Relationships among CEO Image, Corporate Image and Employment Brand Value in Fashion Industry

  • Ko, Eun-Ju;Taylor, Charles R.;Wagner, Udo;Ji, Hyun-Ah
    • 마케팅과학연구
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    • 제18권4호
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    • pp.307-331
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    • 2008
  • The CEO and the Corporate Image is considered very important in the aspect of marketing. The fact that CEO image itself influences the company or value of the product directly and indirectly has been verified through many cases. Recently, the differentiation of products and services between companies became difficult because the disparity in technique between companies retrenched. As a result, the rate of people who decide to purchase or invest their money based on the corporate image or reputation has been increased. Also in the knowledge society like today, the talented employees are the company's customer and the company's necessity for managing those brains of marketing perspective on how to satisfy and attract the customers is being embossed. The Fashion industry is one of the most value-added industry and in those value-added businesses, the most important factor is the human resources' knowledge power. However the study of the relationships among the CEO image, the corporate image and employment brand value in fashion industry has not been carried out yet. This research considers that dynamic relationship exists among the CEO image, corporate image and employment brand value that affects a company's main goal of pursuing benefits and intends to investigate the relationships of the three concepts. The specific purposes of this study were, 1) to analyze the impact of CEO image on a corporate image, 2) to analyze the impact of corporate image on employment brand value, 3) to analyze the impact of CEO image on employment brand value, 4) to analyze whether corporate image plays a mediating role in the relationship between CEO image and employment brand value or not. A survey design with a structured questionnaire was employed for this research. A convenience sample of 398 subjects was selected from two groups, which are university students majoring in fashion and practitioners working in fashion industry. For the data analysis, descriptive statistic (i.e., frequency, percentage), factor analysis, and multiple regression analysis were used by utilizing SPSS 12.0 for Windows program. The results for this research are as follows, first, the study of the impact of CEO image (i.e., Managerial Competence, Reliability/Leadership, Personal Attractiveness) on corporate image (i.e., Product Image, Corporate Social Responsibility Image, Corporate Cultural Image) brought conclusion that the CEO image generally affected the corporate image in fashion industry. Managerial Competence and Reliability/Leadership affected Product Image, Corporate Social Responsibility Image and Corporate Cultural Image. However, while CEO's Personal Attractiveness affected Product Image and Corporate Social Responsibility Image, it did not affect Corporate Cultural Image. Second, the study of the impact of corporate image on employment brand value brought conclusion that corporate image (i.e., Product Image, Corporate Social Responsibility Image, Corporate Cultural Image) affected employment brand value. Corporate Cultural Image affected employment brand value the most and then the Corporate Social Responsibility Image and Product Image. Third, the study of the impact of CEO image on employment brand value brought conclusion that CEO image (i.e., Managerial Competence, Reliability/Leadership, Personal Attractiveness) affected the employment brand value. CEO's Reliability/Leadership affected the employment brand value the most and then CEO's Personal Attractiveness and CEO's Managerial Competence. Forth, the study examined whether corporate image plays a mediating role in relationship of CEO image and employment brand value and concluded that it does. Corporate image played a full mediating role between CEO's Managerial Competence and employment brand value while it played a partial mediating role between CEO's Reliability/Leadership and CEO's Personal Attractiveness. This study is meaningful in a sense that it examines the relationship among the CEO image, corporate image and employment brand value which has not been carried out yet in fashion industry. It will ultimately contribute to the success of a fashion company by providing useful information of establishing strategies for managing proper the CEO and the corporate image to the fashion company and operating the talented employees.

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유창(喩昌)의 생애(生涯)와 의학사상(醫學思想) (The life and medical idea of Yoo Chang)

  • 김수열;윤창열
    • 대한한의학원전학회지
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    • 제4권
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    • pp.101-126
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    • 1990
  • At early Cheong (淸) dynasty, in medical aspect by dependent on practical studying attitude that must found a theory only by an evidence, there had been a tendancy that hoped direct research of sages' mind-eye by escaping the theory of individual classes since Geum-Won (金-元) dynasty. Yoo Chang (喩昌), born in Man-Ryeok (萬曆) 12th year of Myung (明) dynasty (A.D.1583) and dead in Gang-Hee (康熙) 3rd year of Cheong (淸) dynasty (A.D.1664). The results were as follows after studying his practical idea of medicine. 1. Yoo Chang, by recognizing the ${\ll}$Sang-Han-Ro${\gg}$ has lost its true meaning after commented by Wang Hee (王熙), Lim Eog (林億), Seong Moo-I (成無巳), etc. according to Bang Yoo-Jip's (方有執) Chak-Gan-Jung-Jeong (錯簡重訂) theory, he diversified the protocal of ${\ll}$Sang-Han-Ro${\gg}$ 397 method and arranged under Six Meridian part. (六經) 2. The theory of Sam-Gang-Jeong-Rip (三綱鼎立) can be summerized Gye-Ji (桂枝) syndrome which is the case of Wind (風) has injured Wi (衛) stage, Ma-hwang (麻黃) syndrome which is the case of Cold (寒) has injured Yeong (榮) stage, Dae-Cheong-Ryong (大靑龍) syndrome which is the case both of Wind-Cold (風寒) has injured Yeong-Wi (榮衛) stage, and there has been Sam-Gang-Jeong-Rip theory by anterior medical practitioners already but the person who formally used its Sam-Gang-Jeong-Rip term is Yoo Chang. 3. Yoo Chang seized the On Byeng (溫病) by dividing three category and in Byon-Jeung-Si-Chi (辨證施治) he influenced to many aspect of establishment of later Byon-Jeung system On-Byong (溫病의 辨證體系) pertaining to Triple-Warmer by O-Dang (吳瑭) introducing Triple-Wanner Theory. (三焦理論) 4. At Chu-Jo-Ron (秋燥論) of ${\ll}$EUi-Moon-Beop-Ryo${\gg}$, while ${\ll}$Nae-Gyeong${\gg}$ describing if humidity injury Lung, then occur a disorder in it, Yoo Chang recognized that of au tuam when dryness injure Lung there occure a disorder is it so he insisted that at this case, must use Cheong-Joe-Goo-Pye method (淸操救肺法) withherbs, pertaing to Gam-Yoo-Ja-Yoon(甘柔滋潤性) property and he invented Cheong-Joe-Goo-Pye-Tang. (淸操救肺湯) 5. Yoo Chang', so called, Dae-Gi (大氣) indicates Yang-Gi (陽氣) of chest, he insisted that man's creation and every physiological activity depends on maintainence of Dae-Gi, and it integrate Yeong-Gi (榮氣), Wea-Gi (衛氣), Jong-Gi (宗氣), Jang-Boo-Ji-Gi (臟腑之氣), Gyeong-Rak-Ji-Gi. (經絡之氣) 6. Yoo Chang's expression about partical function and character of stomach, not only bolster its theory of historical physician's expression, that is stomach is. foundatness of postnatal period, but also it has corresponding aspect with modern medicine and clinic. 7. Yoo Chang emphasized "if one cure a disease, be must understood the character of disease first and use drugs later" (先議病 後用藥) phrase about of drug usage, and his theory of Geup-Rew-Man-Joo method (急流挽舟) and three therapy of Simple Ascite (單腹腸) are all unique opinion based upon this phrase mentioned above. 8. Yoo Chang's practical idea of medicine greatly influenced to Jang Ro (張璐), Hwang Won-A (黃元御), Oh Eui-Rak (吳儀洛), Joo Yang-Joon (周揚俊), etc. and theory of Sam-Gang-Jeng-Rip (三綱鼎立), Triple Warmer Theory of On Byong (溫疫의 三焦論治), Chu-Jo-Ron (秋燥論), Dae-Gi-Ron (大氣論) etc. became important object to student of Sang-Han (傷寒) and On-Byeng. (溫病) 9. Yoo Chang's Writings has more practical meaning than other physician's, especially, later the idea of Sang-Han (傷寒) and On-Byong (溫病) greatly contributed to development of Sang-Han theory and formation of On-Byong theory.

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수종의 섬유 강화 레진 포스트의 방사선 불투과도와 식별도 평가 (EVALUATION OF RADIOPACITY AND DISCRIMINABILITY OF VARIOUS FIBER REINFORCED COMPOSITE POSTS)

  • 이은혜;최항문;박세희;김진우;조경모
    • Restorative Dentistry and Endodontics
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    • 제35권3호
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    • pp.188-197
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    • 2010
  • 본 연구의 목적은 수종의 섬유 강화 레진 포스트의 방사선 불투과도와 식별도를 비교하고자 하는 것이다. 이번 실험을 위해 1) FRC Postec Plus (Ivoclar Vivadent AG, Schaan, Liechtenstein) 2) Snowlight (Carbotech, Lewis center, OH, USA) 3) Dentin Post (Komet Brasseler, Lamgo, Germany) 4) Rely-X Fiber Post (3M ESPE, St.paul, MN, USA) 5) D.T.-Light Post (BISCO, Schaumburg, IL,USA ) 6) Luxapost (DMG, Hamburg, Germany) 등 6종의 섬유 강화 레진 포스트를 사용하였다. 각 포스트를 참고 기준으로 사용한 1 mm, 2 mm 간격의 알루미늄 step-wedge와 함께 디지털센서를 사용하여 방사선 촬영하였다. 방사선 불투과도는 각 포스트의 다섯 지점에서 $10{\times}10$ 화소의 평균 회색조 값으로 계산하였고 동일 두께의 알루미늄 당량으로 비교하였다. 치아 시편으로 비슷한 방사선 불투과도를 보이는 상악 전치 6개에 포스트를 식립 후 건조 하악골의 설측에 위치시켜 방사선 사진을 촬영하였다. 포스트만을 촬영한 사진과 치아 시편의 방사선 사진들을 구강악안면방사선과 전공자 3명, 치과보존과 전공자 3명, 일반 치과 의사 3명에게 보여주고 설문지를 작성하도록 요청하였다. 설문지는 포스트와 포스트가 식립된 치아 시편 사진에서 방사선 불투과도가 가장 높은 포스트와 낮은 포스트를 고르는 문항, 치근단과 치관부 끝에서 인접 상아질과 가장 식별이 잘되는 포스트를 고르는 문항을 포함하였다. 실험의 결과는 다음과 같았다. 1. 각 FRC-Post는 다양한 방사선 불투과도를 보였다. 2. 가장 높은 방사선 불투과도와 가장 낮은 방사선 불투과도를 가지는 포스트를 고르는 질문에서 포스트만 나열한 경우 실험군 모두 100%의 정답률을 보였으나 포스트를 치아에 넣고 치조골을 중첩시킨 경우 정답률의 변화를 보였다. 3. 포스트 주변 상아질과 구분되는 정도를 묻는 질문에 대해 시편의 조합 순서를 바꾸자 일관된 식별 결과를 보이지 않았다. 이에 본 연구에 사용한 포스트는 다양한 방사선 불투과도를 보이나 식별 능력에 영향을 미칠 정도의 방사선 불투과도 차이를 보이지 않는 것으로 사료된다.

학술회 반영 경향의 애니메이션 페스티벌과 미디어 아트 페스티벌 그리고 컴퓨터 애니메이션 학회 (Reflecting Academic Symposia as a Trend at Animation Festivals, Media Art Festivals and Conferences on Computer Animation)

  • 욜건 하글러;프란지스카 부르크너
    • 만화애니메이션 연구
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    • 통권49호
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    • pp.611-631
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    • 2017
  • 우선 실습이 있고 난 다음, 페스티벌과 이론이 뒤따른다. 매체필름 자체보다 오래된 애니메이션 제작과 비교해서 이 영역의 페스티벌과 이론은 늦게 시작되었다. 애니메이션 1940년대 중반부터 시작된 프랑스 칸느와 같은 영화 페스티벌에서 1960년에 애니메이션 프로그램에 선보였고, 몇몇 단편적 이벤트들이 루마니아, 이탈리아 그리고 도쿄에서 이어졌다. 그리고 마침내 1972년 두 번째로 오래된 페스티벌인 자그레브 아니마페스트가 있다. 애니메이션 이론은 1980년대말 '큰누나'격인 필름 학회에 이어 애니메이션학회(the Society for Animation Studies) 같은 백인-미국인 사회와 연관되어 발전했다. 학술영역에 확장이 있어왔다. 프랑스와 독어권 나라들을 위시한 유럽권 애니메이션 연구와, 폴란드 혹은 크로아티아는 최근 이론학회와 출판을 하면서 뒤를 이어오고 있다. 실습과 페스티벌 그리고 이론 사이의 선명한 시너지는 언제나 애니메이션 아트 형식과 문화에 교두보를 정립하는 주요요소였다. 그러나 지난 몇 년 동안 경향은 애니메이션과 이론 사이의 보다 압착된 관계로 나아가고 있는 듯하다. 애니메이션 페스티벌은 이론적이고 과학적인 심포지움이나 컨퍼런스를 주최한다. 이런 컨퍼런스는 작가나 산업종사자들에게 열려있다. 강연 시작에 아니마페스트 스캐너 자체 개념의 짧은 반영은 린츠 에이알에스 일렉트로니카의 확장된 애니메이션 심포지움의 소개를 따른다. 토론은 나중에 ITFS 애니메이티드 필름 페스티벌과 슈투트가르트의 국제 애니메이션, 특수효과, VR, 게임과 트랜스 미디어의 다중 아카데미 심포지움에 초점을 맞춘다. 이러한 상황에 대한 연구는 예술과 과학, 이론과 산업의 허물어진 경계를 아티스트와 실무자, 학자, 큐레이터와 페스티벌 참가자들에게 다른 형식으로 드러낸다.

서울시인구(市人口)의 출생(出生).사망(死亡) 양상(樣相)에 관(關)한 연구(硏究) (On Pattern of Birth and Death in Seoul City)

  • 권이혁;김태용;박형종;구도서;이용욱;박순영
    • Journal of Preventive Medicine and Public Health
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    • 제1권1호
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    • pp.9-23
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    • 1968
  • A survey was conducted by the staff of the College of Medicine and School of Public Health, Seoul National University in cooperation with Seoul Special City from 1 December 1967 through 28 February 1968, on such events as delivery, death, abortion and pregnancy. The survey directed to a total population of 47,811 residing in 9,157 households led us to the following findings: 1. Two year averages of crude birth rate, crude death rate and natural increase rate were 30.1, 5.6 and 24.5, respectively. 2. Of all deliveries, home and hospital deliveries constituted 61.1 per cent and 35.5 per cent, respectively. 3. Deliveries other than hospital deliveries were found to be attended more often by mother-in-laws (26.5 per cent) than by doctors or midwives(23.4 per cent). 4. About 51 per cent of all women having experiences in pregnancy during the last two years had an experience of consulting a doctor at least one time throughout whole period of pregnancy. 5. In most cases scissors were used to cut umbilical cords, of which 71.0 per cent were not sterilized and only 20.3 per cent sterilized. 6. In many cases placenta was incinerated(48.2 per cent) and on many other occasions it was thrown away into water(28.3 per cent). 7. Cement bags(37.4 per cent), gauze and absorbent cotton(29.8 per cent) were found to be most frequently used to receive new-born babies. 8. In 1966 8. 8 per cent of the women had at least one abortion induced and in 1967 the percentage was 9.2 per cent. 9. Nearly all(95.8 per cent) of the induced abortions reportedly were done at doctor's clinics. 10. Of all the abortions induced 65.3 per cent were done by specialists in obstetrics, 30.3 per cent by general practitioners and 2.7 per cent by midwives. 11. Those who experienced spontaneous abortions were 1.9 per cent of all women both in 1966 and 1967. 12. About 9.2 per cent of women investigated were found to be currently pregnant. 13. Age specific death rate turned out to be highest among those under 1 year of age. 14. Ten major causes of death in their order of frequency were: 15. Places of death can be classified into homes(75.3 per cent) and hospitals(13.2 per cent). 16. Method of disposing of corpses comprised burials(54.2 per cent) and cremations(44.6 per cent). 17. Infant, neonatal and hebdomadal mortality rates have been computed at 32.2, 18.9 and 13.7, respectively. 18. Infants were found to have died either at homes(81.5 per cent) or at hospitals(18.5 per cent). 19. Birth registrations had been done for about 18.5 per cent of the dead infants.

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정보서비스품질이 고객로열티에 미치는 영향에 관한 연구: 고객관계관리 관점 (The Effect of Information Service Quality on Customer Loyalty: A Customer Relationship Management Perspective)

  • 김형수;김승하;김영걸
    • Asia pacific journal of information systems
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    • 제18권1호
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    • pp.1-23
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    • 2008
  • As managing customer relationship gets more important, companies are strengthening information service using multi-channels to their customers as a part of their customer relationship management (CRM) initiatives. It means companies are now accepting such information services not as simple information -delivering tools, but as strategic initiatives for acquiring and maintaining customer loyalty. In this paper, we attempt to validate whether or not such various information services would impact on organizational performance in terms of CRM strategy. More specifically, our research objective is to answer the next three questions: first, how to construct the instruments to measure not information quality but information service quality?; second, which attributes of information service quality can influence corporate image and customer loyalty?; finally, does each information service type have unique characteristics compared with others in terms of influencing corporate image and customer loyalty? With respect to providing answers to those questions, the previous studies had been limited in that those studies failed to consider the variety of types of information service or restricted the quality of information service to information quality. An appropriate research model answering the above questions should consider the fact that most companies are utilizing multi channels for their information services, and include the recent strategic information service such as customer online community. Moreover, since corporate information service could be regarded as a type of products or services delivered to customer, it is necessary to adopt the criteria for assessing customer's perceived value when to measure the quality of information service. Therefore, considering both multi-channels and multi-traits may enable us to tell the detailed causal routes showing which quality attributes of which information service would affect corporate image and customer loyalty. As information service channels, we include not only homepage and DM (direct mail), which are the most frequently applied information service channels, but also online community, which is getting more strategic importance in recent years. With respect to information service quality, we abstract information quality, convenience of information service, and timeliness of information service through a wide range of relevant literature reviews. As our dependant variables, we consider corporate image and customer loyalty that both of them are the critical determinants of organizational performance, and also attempt to grasp the relationship between the two constructs. We conducted a huge online survey at the homepage of one of representative dairy companies in Korea, and gathered 367 valid samples from 407 customers. The reliability and validity of our measurements were tested by using Cronbach's alpha coefficient and principal factor analysis respectively, and seven hypotheses were tested through performing correlation test and multiple regression analysis. The results from data analysis demonstrated that timeliness and convenience of homepage have positive effects on both corporate image and customer loyalty. In terms of DM, its' information quality was represented to influence both corporate image and customer loyalty, but we found its' convenience have a positive effect only on corporate image. With respect to online community, we found its timeliness contribute significantly both to corporate image and customer loyalty. Finally, as we expected, corporate image was revealed to provide a great influence to customer loyalty. This paper provides several academic and practical implications. Firstly, we think our research reinforces CRM literatures by developing the instruments for measuring information service quality. The previous relevant studies have mainly depended on the measurements of information quality or service quality which were developed independently. Secondly, the fact that we conducted our research in a real situation may enable academics and practitioners to understand the effects of information services more clearly. Finally, since our study involved three different types of information service which are most frequently applied in recent years, the results from our study might provide operational guidelines to the companies that are delivering their customers information by multi-channel. In other words, since we found that, in terms of customer loyalty, the key areas would be different from each other according to the types of information services, our analysis would help to make decisions such as selecting strengthening points or allocating resources by information service channels.

Ultra-sensitive HBsAg IRMA 키트의 민감도 및 변이형 검출능 평가 (The Assessment of Ultrasensitive HBsAg kit's Sensitivity level and Performance in Detection of Mutant Forms)

  • 하동혁;민경선;노경운;김현주
    • 핵의학기술
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    • 제15권1호
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    • pp.121-125
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    • 2011
  • 배경 : B형간염표면항원(HBsAg)은 B형간염의 진단에 있어 가장 중요한 혈청학적 지표 중 하나이다. HBsAg 검사에 대한임상검사실의 수요에 맞추어 자동화 장비 및 검사법이 계속 개발되어 왔다. 본 연구는 국내에 보급된 RIAKEY, BNIBT, RIAKEY Ultra Sensitive HBsAg, ROCHE 키트의 민감도 및 변이형 검출능과 CLIA법의 CENTAUR 장비와 RIAKEY Ultra Sensitive HBsAg의 상관계수를 알아보고자 하였다. 방법 : WHO $1^{st}$ International Standard 1985(80/549), WHO $2^{nd}$ International Standard 2003 (00/588) 표준물질 2개를 이용하여 농도별 0.08, 0.04, 0.02, 0.01, 0.005 IU/ml 까지 계단희석을 시행하였으며, Subtype ad 9종, Subtype ay 변이시료 1종을 이용하여 RIAKEY, BNIBT, RIAKEY Ultra Sensitive HBsAg, ROCHE 키트를 이용하여 시행하였다. 그리고, 아형 검출에 사용된 변이시료 10종에 대한 IRMA법의 RIAKEY Ultra Sensitive HBsAg와 CLIA법의 CENTAUR 장비를 이용한 상관계수를 비교하였다. 결과 : 표준물질의 농도별 측정 시 WHO 0.01 PANEL 에서 Index 1.0 이상의 결과 값을 얻었으며, 그 결과 민감도는 0.01 IU/ml로 측정되었다. RIAKEY Ultra sensitve HBsAg 키트가 민감도측면에서 우수함을 알 수 있었다. RIAKEY Ultra sensitve HBsAg IRMA 키트에서는 adw2 9종과 ayw1 1종의 변이형 형태에 따라 모두 Index 1.0 이상으로 혈청중의 HBsAg을 100% 측정할수 있었다. RIAKEY Ultra sensitive HBsAg와 CLIA의 결과가 Y=1.0075 X + 1.2434, $R^2$=0.9982으로 우수한 상관성을 보였다. 결론 : 4세대인 IRMA법의 Ultra Sensitive HBsAg 키트로 혈청중의 HBsAg과 여러 가지 아형을 신속하고 정확히 측정하여 질병을 진단 할 수 있을 것으로 여겨진다.

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F-18 FDG 자동분주기의 분주 최적화에 관한 연구 (Study on Optimized Dispensing of F-18 FDG Auto Dispenser)

  • 지봉근;이상훈;김종언;김원태;지태정
    • 대한방사선기술학회지:방사선기술과학
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    • 제39권3호
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    • pp.377-384
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    • 2016
  • 본 연구는 PET/CT 종사자의 피폭선량 감소 및 방사성의약품의 정확한 방사능량 투여를 목적으로 사용 중인 자동분주기의 분주 최적화에 관한 연구이다. 연구방법은 주사기 종류 및 분주 속도, Vial 압력에 따른 평가 결과를 통해 분주 횟수에 따른 오차 값을 알아보고 보정 값을 적용하여 최적화된 분주방법을 찾고자 하였다. 연구결과 5 ml 주사기에서는 평균 9.38 mCi가 분주되었고, 3 ml에서는 9.55 mCi가 분주되어 3 ml 주사기에서 10 mCi에 근접한 재현성을 보였다. 분주 속도에 따른 평가에서는 속도를 5, 10, 15, 20 mm/min 으로 증가시켜 10회씩 측정한 결과, 5 mm/min의 속도에서 10 mCi 정량에 가까운 방사성의약품이 분주되었다. Needle필터 사용 전/후 Vial 압력에 따른 평가 결과에서는 3 ml 주사기의 경우 사용 전 9.53 mCi, 사용 후 9.84 mCi로 측정되어 Needle필터를 사용한 후 분주하는 것이 최적화된 값으로 확인되었다. 또한 분주 횟수 증가에 따른 보정 값 적용 전/후 방사능 평가에서는 보정 전 9.53 mCi, 보정 후 10.07 mCi로 측정되어 보정 값을 적용한 실험에서 정량 값에 가까운 것으로 확인되었다. 따라서, 방사성의약품 분주 시 최적화된 분주방법은 주사기는 3 ml를 사용하고, 분주 속도는 5 mm/min로 설정하며 분주 시 Needle필터를 사용하고, 장비의 분주 횟수(x)에 따른 보정 값은 [$y=0.097{\times}x$]로 설정하는 것이 좋은 것으로 확인되었다.

간선도로 최고속도제한 하향이 교통사고에 미치는 영향 및 효과분석 - 부산광역시를 중심으로 - (Study of Downward Speed Limit of Main Roads on Traffic Accident and Effect Analysis - In Busan Metropolitan City -)

  • 임창식;최양원
    • 대한토목학회논문집
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    • 제38권1호
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    • pp.81-90
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    • 2018
  • 본 연구는 부산지방경찰청이 간선도로 교통사고 감소를 위해 '10년부터 '15년까지 실시한 총 29개 구간을 대상으로 도시부 간선도로 제한속도 하향의 효과를 평가하였다. 제한속도 하향 전 후 1년~3년간 발생한 교통사고 통계를 분석한 결과, 교통사고 건수는 3.09%, 부상자수는 8.76%가 감소하여 미미한 것으로 나타났으나 사망자수는 36.73%가 감소하여 제한속도 감소효과가 높은 것으로 분석되었다. 제한속도 하향 전 후 차량 주행속도를 변화를 조사하여 평균 6.31km/h가 감소한 것으로 나타났고, 대부분의 구간에서 평균 주행속도의 변화가 통계적으로 유의하여 제한속도 하향의 효과가 있는 것으로 나타났다. 제한속도 준수율은 10.26%p 증가하여 전반적으로 교통안전이 크게 개선된 것으로 평가된다. 제한속도가 하향된 대상구간 인근 거주자를 대상으로 실시한 설문조사 결과, 응답자의 약 57.9%가 차량의 주행속도 하향을 체감하는 것으로 조사되었지만 이번 사업이 제한속도 노면표시, 교통안전표지 설치 등 차량에 초점을 맞춰 실시되었기 때문에 응답자의 약 25.8%만이 보행안전도가 향상되었다고 밝혔다. 앞으로는 도로굴곡, 보차분리 등 생활도로 주변을 개선하여 보행자 안전까지 고려하는 것이 필요하다고 판단된다. 아울러, 부산 도시부 간선도로 제한속도 하향 구간의 사망사고를 감소시키는 측면에서 분명히 긍정적인 결과를 보이고 있으나 조사대상 29개 구간 중 사고가 증가된 구간이 10개 구간으로 보다 세부적인 분석이 향후 필요하다. 따라서 궁극적으로는 교통실무자가 쉽고, 객관적인 근거를 바탕으로 적절한 제한속도를 설정하여 사고감소 효과를 증대시키는 근거 자료로 활용할 수 있을 것으로 기대된다.