일학습병행제의 OJT 특성이 참여 근로자의 직무만족에 미치는 영향: 기업규모의 조절효과

정지인 ( Ji-in Jeong ),김성훈 ( Seonghoon Kim ) 한국생산성학회 2017 生産性論集 Vol.31 No.3

The training can be an effective tool for improving productivity and financial performances in corporations. Among various types of training programs, on-the-job training(OJT) is widely adopted by companies around the world. Many studies have reported its significant effect on different organizational outcomes. In addition to learning and organizational outcomes, recent studies have also paid attention to the effect of OJT programs on personal attitudes of employees. They argue that OJT programs positively and significantly influence such personal attitude variables as job satisfaction, job involvement and organizational commitment. This study has two purposes. First, this paper explores the OJT factors that affect employees` job satisfaction. Specifically, it develops hypotheses about the roles of learning motivation of trainees, competency of trainers and quality of OJT programs and learing environments. Second, this paper verifies how the organization size moderates the relationship between OJT factors and job satisfaction. Small and medium enterprises(SMEs) are less likely to have enough resources necessary for successfully designing and implementing structured OJT programs. Employees in those organizations may have limited learning opportunities compared to them in large companies. Therefore, the effect of well designed OJT programs on various outcomes can be greater in SMEs. In this sense, this paper argues that the organization size weakens the relationship between OJT factors and participants` job satisfaction. The smaller the organization size is, the stronger the effect of OJT factors on employees` job satisfaction. In order to achieve the goals, 315 survey were collected from the learning-workers, participating in `work-learning dual system` in Korea. The system is designed to cultivate a practical workforce in industrial fields providing structured and customized training programs based on National Competency Standard(NCS). Similar to German dual system and Swiss apprenticeship system, it is expected to reduce unnecessary expenses and resolve job mismatch between job-seekers and companies. The results of this study are as follows. First, all the OJT factors, which are learning motivation of trainees, competency of OJT trainers and quality of training programs and learning environments, influence the job satisfaction of learning-workers positively and significantly. Second, as hypothesized, the organization size weakens the relationship between two OJT factors, learning motivation and quality of trainers, and job satisfaction.

한국과 미국의 고등학교 화학 교과서에서 삼투 현상 기술에 대한 비교 분석

정지인 ( Ji In Jeong ),장낙한 ( Nak Han Jang ) 부산대학교 과학교육연구소 2018 교사교육연구 Vol.57 No.4

이 연구의 목적은 한국과 미국의 고등학교 화학 교과서에서 삼투 현상 기술에 대해 비교 분석하는 것이었다. 한국 화학 교과서에서 삼투 현상을 묽은 용액의 성질로 다루는 반면, 미국 화학 교과서에서는 농도에 관계없이 용액의 성질로 다루고 있었다, 또한 한국과 미국 화학 교과서는 모두 삼투 현상을 반투막에서 일어나는 현상으로 설명하고 있다. 실생활의 예시로 모든 한국 화학교과서는 김장할 때 배추를 절이는 현상으로 설명하였다. 하지만 거의 모든 미국 화학 교과서는 생물의 세포가 영양분을 흡수하는 현상으로 설명하고 있다. 삼투 현상은 용액의 농도에 관계없는 성질이고, 우리 실생활에서 삼투 현상은 거의 대부분 라울의 법칙을 벗어난 진한 농도 상태에서 일어난다. 따라서 모든 한국의 화학 교과서가 삼투 현상을 묽은 용액의 성질로만 기술하고 있는 것에 대한 보완 수정이 필요하며, 아울러 실생활에서 일어나는 삼투 현상을 교과서에 기술할 때 농도 개념을 보충 확장하고 열역학적 개념을 도입할 필요성 있다고 제언한다. The purpose of this study was to analyze comparatively the description of osmosis in Korean and American high school chemistry textbooks. Korean chemistry textbooks deal with osmosis as a colligate property of a diluted solution whereas American chemistry textbooks deal with it as a property of a solution regardless of the concentration. In addition, all Korean and American chemistry textbooks explained osmosis with the phenomenon occurring in a semipermeable membrane. In the osmosis example of a real life, all Korean chemistry textbooks explained the phenomenon occurring in a salted cabbage. On the other hand, almost American chemistry textbooks explained the phenomenon delivering nutrients in a cell of life. Osmosis is a property independent of the concentration of solution, and in our daily lives this usually happens in a high concentration of solution. Therefore, it is necessary to correct supplementally the description as the properties of diluted solution in all high school chemistry textbooks of Korea. In addition, it is also necessary to extend supplementally the concentration of solution and to introduce the thermodynamic concept when describing osmosis in chemistry textbooks.

비도시지역 수돗물불소농도조정사업의 영구치 우식예방효과

정지인 ( Ji In Jung ),김지은 ( Ji Eun Kim ),김세연 ( Se Yeon Kim ),이정하 ( Jung Ha Lee ),김진범 ( Jin Bom Kim ),정승화 ( Seung Hwa Jeong ) 대한예방치과·구강보건학회 2016 大韓口腔保健學會誌 Vol.40 No.1

Objectives: The aim of this study is to evaluate the effect of suburban community water fluoridation programs on preventing caries in permanent teeth. Methods: In 2012, surveys were administered to children aged 8, 12, and 15 years residing in fluoridated Habcheon township area. Samples collected during the national survey in 2012 from children of the same age residing in non-fluoridated township areas were used as the control, and the caries prevalence data from this sample were used to estimate the caries preventive effect in the studied regions. This study included 457 subjects from the Habcheon township area and 1,792 in the control group. The data obtained from the survey were analyzed using the IBM SPSS statistical package version 21.0. The caries preventive effect exerted by fluoride in the community water supply was determined by calculating the differences in the DMFT and DMFS indices between the study and control groups. The cofounders of the mean number of fissure-sealed teeth and surfaces were controlled to estimate the effectiveness of caries prevention. Results: The odds ratio of subjects with no dental caries in the fluoridated region was 0.75 compared to that in the control group. The mean DMFT scores or DMFS scores adjusted for the number of fissuresealed teeth or tooth surfaces were lower than those in the control group. The caries prevention fraction was estimated to be 23.4% based on the difference in the adjusted mean DMFT scores between the control and study groups. Conclusions: These results suggest that fluoridation of the community water in the suburban area was highly effective in preventing dental caries in permanent teeth, and therefore, this community water fluoridation program should be implemented in other regions in Korea.

Au-Pd-Ag-In계 금속-세라믹용 합금의 산화 처리 후 급랭 처리가 소성 단계에서 경도와 미세구조의 변화에 미치는 영향

정지인(Ji-In Jeong),신혜정(Hye-Jeong Shin),권용훈(Yong-Hoon Kwon),설효정(Hyo-Joung Seol) 대한치과재료학회 2020 대한치과재료학회지 Vol.47 No.1

전갈(全蝎)이 노화(老化)에 따른 2단계(段階) 발암화(發癌化) 과정(過程)에 미치는 영향(影響)

정인채,정지천,윤철호,Jeong, In-Chae,Jeong, Ji-Cheon,Yoon, Cheol-Ho 대한한방내과학회 2000 大韓韓方內科學會誌 Vol.21 No.2

To clarifiy the activating effects of Buthus martensi Karsch(BMK) on tumor promotion in two-stage carcinogenesis in mice was investigated. In vivo system, BMK was seen to gave an inhibitory activity on TPA-induced mouse ear edema. In addition, the BMK was proved to have antitumor-promoting activity in two-stage mouse skin carcinogenesis induced by DMBA and two-stage mouse lung carcinogenesis induced by 4-NQO as a initiator plus TPA and glycerol as a promoter. Moreover, BMK significantly exhibited an cytolytic effect in HepG2 cells and showed significant antitumor activity against Sarcoma-180 bearing mice by oral administration. These results suggest that BMK could be effective in adjuvant chemotherapy for human cancer.

임신중 발생한 난소종양의 임상적 고찰

서정욱(Jeong Wook Seo),노정훈(Jeong Hoon Rho),오관영(Kwan Young Oh),박미혜(Mi Hye Park),김은경(Eun Kyung Kim),양윤석(Yun Seok Yang),황인택(In Taek Hwang),정지학(Ji Hak Jung),박준숙(Joon Sook Park) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.9

목적 : 임신 중 동반된 자궁부속기종양에 대한 임상양상 및 임신경과에 미치는 영향을 알아보고자 본 연구를 하였다.방법 및 재료 : 1995년 1월부터 1999년 12월까지 만 5년간 본원에서 경험한 임신 중 동반된 자궁부속기종양 69례를 분석하였다. 추적관찰 중 자연소멸되었거나 자궁외 임신과 동반된 경우는 제외되었다. 임상양상을 조사하였으며 임신 중 수술적 처치 및 보존적 치료가 임신경과에 미치는 영향을 분석하였다. 결과 :1. 발생빈도는 같은 기간의 총 분만수 10,550예에 69례로 1:153(0.65%)이었고 악성으로는 1예(1/10,550)의 점액성 경계성 종양이 발견되었다. 2. 연령은 25세∼29세군이 가장 많았으며(42.0%) 다산모보다 초산모에서 더 흔했다.(59.4%:40.6%)3. 난소종양으로 인한 합병증은 염전이 10예(14.6%)로 가장 많았으며 기타 출혈이나 파열의 예는 없었다.4. 진단시기는 임신 제 1삼분기가 53.6%, 제 2삼분기가 14.5%, 제 3삼분기가 31.9%였고 진단방법은 초음파와 내진에 의하였으며 제왕절개수술중 우연히 발견된 경우도 20예(29.0%)였다. 5. 수술시기는 제왕절개술중 우연히 발견된 20예를 제외하고 제 1삼분기에 67.6%, 제 2삼분기에 24.3%, 제 3삼분기에 8.1%순이었다.6. 총 69예중 제왕절개수술중 우연히 발견된 20예와 난소종양수술과 동시에 인공유산시킨 22예를 제외한 27예에서 이중 18예는 수술적 처치로 나머지 9예에서는 비수술적 요법으로 치료받으며 임신의 경과를 관찰했다.7. 임신경과는 수술적 처치를 받은 군(18예)에서 만삭질식분만이 12예(66.7%), 만삭 제왕절개수술이 5예(27.8%), 조산이 1예였으며 평균 분만주수는 38.8주였다. 비수술군(6예)에서는 만삭질식분만이 1예(16.7%), 만삭제왕절개수술이 4예(67.0%), 조산이 1예였다.8. 병리조직학적 소견으로는 양성 낭성기형종이 35.7%, 점액성 낭선종이 22.9%, 장액성 낭선종이 14.3%, 단순낭종이 14.3%였다.9. 제왕절개수술이 32예에서 행해졌는데 25례에서 산과적 이유로, 나머지 7예에서 난소종양을 주소로 수술하였다.결론 : 최근 산전진찰에 초음파의 이용으로 임신 중 자궁부속기종양의 발견율이 증가하는 추세이며 이의 처치에 있어서 임신에 미치는 영향을 고려할 때 방법의 선택에 있어 신중을 기해야 한다. 본 논문은 임신 중 자궁부속기종양의 임상양상을 조사하였으며 수술적, 비수술적 처치 및 수술시기가 임신의 경과에 미치는 영향을 비교, 분석하였다. Objective : Our purpose was to evaluate the clinical appearance and outcome of pregnancy associated with ovarian tumors. Methods : A review was performed of patients who were seen with an ovarian tumor in pregnancy from January 1995 to December 1999. We excluded ovarian tumors that resolved spontaneously and were found simultaneously with ectopic pregnancy. Results : 1. The incidence of ovarian tumors in pregnancy was 69 in 10,550 deliveries.(1:153) One case of mucinous borderline malignancy was found. 2. The ovarian tumors occuring in pregnancy were the most common at 25 to 29 years old-pregnant women(42.0%) and more common in nulliparous pregnant women(59.4%) than in multiparous women.(40.6%) 3. The most common complication of ovarian tumors in pregnancy was torsion which is 10 cases(14.6%) 4. Pre-operative diagnosis of ovarian tumors was made in the first trimester(53.6%), second trimester(14.5%), and third trimester(31.9%) 5. Excluding the 20 cases of cesarean section, operation was performed at first trimester in 25cases(67.6%), at second trimester in 9 cases (24.3%), at third trimester in 3 cases (8.1%). 6. The surgical management was performed from 18 women and the conservative therapy was done at 6 cases. 7. According to the outcome of pregnancy, among 18 cases in which the ovarian tumor was removed, vaginal delivery occurred at term in 12 cases (66.7%), cesarean section in 5 cases(27.8%) and premature delivery in 1 case. Among the other cases in which conservative management was performed, term vaginal deliveries were done in 1 case(16.7%), cesarean section in 4 cases(67.0%) and premature delivery in 1 case(16.7%). 8. The histologic features of the exised ovarian tumors were benign cystic teratoma 25 cases (35.7%), mucinous cystadenoma 16 cases(22.9%), serous cystadenoma 10 cases(14.3%) and simple cyst 10 case(14.3%) 9. The cesarean section was performed in 32 cases including emergency operation. In 25 cases, common cause was due to obstetrical problem( elective repeat cesarean section, fetal malpresentation, labor disorder) and in the rest 7 cases was due to adnexal masses. Conclusion : Although the incidence of ovarian cancer in pregnancy is low, the incidental finding of an adnexal mass in pregnancy is more common. Because complications of surgery are increased in pregnancy, operative management needs to be considered. Our data was consistent with what has been reported clinical study to determine optimal management of an ovarian tumor in pregnancy.

진주시 수돗물 불소농도조정사업의 11년간 비용편익 분석

김만경 ( Man Kyong Kim ),정지인 ( Ji In Jung ),김민지 ( Min Ji Kim ),전은주 ( Eun Joo Jun ),김한나 ( Han Na Kim ),김세연 ( Se Yeon Kim ),한동헌 ( Dong Hun Han ),정승화 ( Seung Hwa Jeong ),김진범 ( Jin Bom Kim ) 대한예방치과·구강보건학회 2014 大韓口腔保健學會誌 Vol.38 No.2

Objectives: The aim of this study was to estimate the economic costs and benefits of a water fluoridation program in the city of Jinju, Korea. Methods: In 2009, dental surveys were conducted on 2,315 children aged 6-12 years in Jinju, which had been fluoridated for 11 years. The decayed/missing/filled teeth (DMFT) scores of children in Jinju were compared to the DMFT scores of same-aged children in non-fluoridated small- and mediumsized cities in the fourth Korean National Health and Nutrition Examination Survey conducted from 2007 to 2009 by the Korea Centers for Disease Control and Prevention. The reduced number of decayed permanent teeth by the water fluoridation program was estimated as the difference between the DMFT scores of children in Jinju and those in non-fluoridated small- and medium-sized cities. The economic benefits were estimated by the savings from reduced dental treatment costs by using the reduced number of decayed permanent teeth from the water fluoridation program. All annual costs and benefits were calculated from 1998 to 2009. The social rate and untreated rate of decayed teeth were applied as 3% and 20%, respectively. The annual benefit-cost ratio was estimated by using the annual benefits and cumulative program costs. Results: The economic benefit in 2009 from a water fluoridation program was estimated as 57,496,000,000 Korean Won (KRW), and the cumulative cost in 2009 was estimated as 1,387,000,000 KRW. The net present value in 2009 from a water fluoridation program was 56,109,000,000 KRW. The benefit-cost ratio in 2009 was estimated as 41.4. Conclusions: The economic benefit of a water fluoridation program in Jinju city was evaluated as excellent.

근치적 자궁절제술을 시행받은 자궁경부암 환자의 임상적 고찰

정성운(Seong Un Jeong),조성중(Sung Joong Cho),김장환(Jang Hwan Kim),이남우(Nam Woo Lee),김경진(Kyung Jin Kim),박미혜(Mi Hae Park),황인택(In Tak Hwang),정지학(Ji Hak Jung) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.8

목적: 근치적 자궁절제술을 시행 받은 자궁경부암환자의 임상적 고찰을 통해 수술 후 치료 성적을 분석해 보고자 한다. 연구방법: 1983년 1월부터 1992년 12월까지 을지 대학병원에서 광범위 근치적 자궁절제술을 시행 받은 자궁경부암 환자 중 추적관찰이 가능했던 162예를 대상으로 하였다. 결과: 나이 분포는 40대와 50대, 30대순이었고 환자의 임상 병기 분포는 Ia기가 12예(7.4%), Ib기가 84예(51.9%), IIa기가 39예(24.1%) 그리고 IIb기가 27예(16.7%)였다. 조직 병리학적 형태는 편평상피세포암이 91.9%, 선암이 4.9%, 선편평암이 3.1%이고 골반 임파절 전이 빈도는 I기가 22.9%, II기가 31.8%였으며 전체 임파절 전이 빈도는 26.4%였다. 광범위 근치적 자궁절제술 후 방사선 치료의 빈도는 I기가 63.5%, II기가 75.8%였다. 재발율은 7.4%였고 가장 흔히 재발되는 부위는 질교합부였다. 우리는 또한 환자의 5년 생존율을 평가했는데 그 결과는 Ia기는 100%, Ib기는 95.2%(4예), IIa는 87.2%(5예), IIb는 77.8%(6예)였다. 결론: 연령별 환자의 분포는 40대와 50대가 30.9%로 가장 높은 발생 빈도를 보였고 임상 병기별 분포는 Ib기가 51.9%로 가장 많은 빈도를 보였으며 병리 조직학적 분포는 편평 상피 세포암이 91.9%로 대다수를 보였고 전체 임파절 전이빈도는 26.4%였으며 가장 흔한 재발부위는 질교합부였다. 5년 생존율은 Ia기가 100%, Ib기가 95.2%, IIa기가 87.2%, IIb기가 77.8%였다. Objective: The purpose of this study was to analyze the clinical study for patients with cervical cancer who had undergone radical hysterectomy. Method: The subjects of this study were one hundred and sixty two patients with cervical cancer who had undergone radical hysterectomy at Eulji Medical College Hospital, Taejon, Korea, from January 1983 to December 1992. We reviewed the medical record retrospectively and analyzed the data. Result: The distribution of patients by age was found in the order of 50 decade and 60 decade, 40 decade. Those by the clinical stages were as follows: Stage Ia, 12 cases(7.4%); Stage Ib, 84 cases(51.9%); Stage IIa, 39 cases(24.1%); Stage IIb 27 cases(16.7%). The results of histopathologic type were distributed as follows: squamous cell carcinoma was 91.9%, adenocarcinoma was 4.9% and adenosquamous cell carcinoma was 3.1%. The histologic subtypes of squamous cell carcinoma(149 cases) were as follows: Large cell non-keratinizing type was 75.9%, large cell keratinizing type was 14.8% and small cell type was 1.2%. The frequancy of lymph node metastasis was 22.9% in stage I and 31.8% in stage II. The overall incidence of lymph node metastasis was 26.4%. The frequency of external radiation therapy done after radical hysterectomy was 63.5% in stage I and 75.8% in stage II. The 5-year survival rate was as follows: The Ia was 100%; Stage Ib, 95.2%(4cases); Stage IIa, 87.2%(5cases); Stage IIb, 77.8%(6cases). The incidence of recurrence was 7.4% and recurrent sites were vaginal stump , rectum and pelvic wall. Conclusion: The highest incidence of cervix cancer in age distribution was 50 decade(30.9%) and 60 decade(30.9%). The most common clinical stage was Ib(51.9%) and most frequent pathologic type was squamous cell carcinoma(91.9%). The overall incidence of lymph node metastasis was 26.4% and The most common site of recurrence was vaginal stump. The 5-year survival rate was 100% in the stage Ia, 95.2% in the stage Ib, 87.2% in the stage IIa, 77.8% in the stage IIb.

유기인계 살충제 중독증에서의 혈청 Amylase 활성도

이수기 ( Lee Su Gi ),이은경 ( Lee Eun Gyeong ),정지인 ( Jeong Ji In ),정정희 ( Jeong Jeong Hui ),조준탁 ( Jo Jun Tag ),이진관 ( Lee Jin Gwan ) 대한내과학회 1993 대한내과학회지 Vol.44 No.4

Dressel 등이 anticholinesterase 살충제 중독으로 인한 임상적인 급성 췌장염을 보고한 이래 몇몇 증례가 있었고, 최근에는 Lankish 등에 의해 급성 췌장염이 보고되었다. 이에 본원에서도 이약물 중독으로 내원한 환자를 대상으로 췌장의 병발을 조사하여 다음과 같은 결론을 얻었다. 1) 유기인계 살충제 중독증 환자 31예중 17예(55%)에서 혈청 amylase가 정상치를 초과하였고 이 17예 중 5예(16%)에서 혈청 amylase가 500 U/dl 이상으로 급성 췌장염의 가능성을 시사하였다. 그러나 복통이나 장폐색등의 증세는 나타나지 않았다. 2) 급성 췌장염의 가능성을 보인 환자 5예에서 복부 초음파를 실시했는데, 1예에서 췌장의 체부와 미부에 부종 소견을 보였고 치료후 부종이 소실되었으며, 4예에서는 정상소견을 보였다. 3) 상승된 혈청 amylase는 3일이내에 거의 대부분 정상화되었으며 1예에서만 4일째 정상화되었다. 4) 의식 변화가 있으면서 기계 호흡이 필요했던 중증 중독증 환자들에게서 평균 혈청 amylase 423 U/dl로 제일 높았고, 혈청 amylase 500 U/dl 이상으로 급성 체장염의 가능성을 시사한 것도 4예로 가장 많았다. 이상의 결과로 보아 이 약물 중독 환자의 반 수 이상에서 혈청 amylase치가 정상 범위를 초과하였고 1/6정도의 환자에서 500 U/dl를 초과하여 임상적 췌장염의 가능성을 시사하였다. 따라서 우리나라 농촌 지역에서 흔히 발생하는 유기인제 중독증 환자에 있어, 특히 중증 환자 치료 중에 장 폐색증이나 복막염의 병발이 있을 경우 췌장염 발생에 관심을 가져야 할 것으로 생각된다. Organophosphate insecticides are used allover the world and are household items in the rural area of the Korea. Because of their easy accessability, their ingestion either accidentally or for a suicidal purpose is common in the Korea. Acute pancreatitis occuring as a complication of an anticholinesterase insecticide intoxication was first reported by Dressel et al(1979) and has since been reported by other investigators. Among them, pancreatitis with unresponsiveness followed by pseudocyst, or painless hemorrhagic pancreatitis only menifested by ileus and abcominal distension was founded after intoxication. We had serial serum amylase determination and clinical evaluation on 31 patients of organophosphate intoxication. The results were as follows. In the 31 patients of poisonous organophosphate insecticide, serum amylase was elevated in the 17 patients and was assumed to show pancreatic involvement. Btu, abdominal pain or ileus was absent. In 5 of 17 patients, serum amylase level was more than 500 U/dl and suggested to evoke acute pancreatitis. All of the 5 patients receive upper abdominal ultrasonography. In one patient, there was an edematious change in the body and tail of the pancreas and normalized in the following study. Others were normal. Severely affected patients who needed respiratory assistance and had mental change, mean serum amylases value was the hightest and the possibility of acute pancreatitis was the greatest. In our study, forfunately, all the patients discharged without complication of acute pancreatitis. Therefore, in the patients of organophosphate insecticide intoxication, if ileus or suspicious peritonitis is presents, we must consider the development of acute pancreatitis.

군집분석을 이용한 온실가스 배출특성에 따른 도시유형화

정지형(Jeong, Ji Hyeong),반영운(Ban, Yong Un),백종인(Baek, Jong In),최나래(Choi, Na Rae),김유미(Kim, Yu Mi) 한국지역개발학회 2010 한국지역개발학회 세미나 논문집 Vol.2010 No.3

Recently, local governments tend to calculate the amount of greenhouse gas(GHG) emissions, so that they set up reduction target to respond to climate change. This study has intended to calculated the account of local government s GHG emissions through 2006 IPCC guideline and classify local government in accordance with there GHG emissions characteristics using cluster analysis. This study consisted of following two steps. First, we calculate the account of local government s GHG emissions from such sectors as energy, land-use, and waste. Second, we classified cities as three classes using cluster and factor analysis. This study has found the following results: 1) seventy-three local government s GHG emissions and variations at 2002 to 2007. 2) they are classed as 3 characteristics. First class has too many people and a high density of population. Second class has too many financial institution and vehicle, and Third class has too many living and commerce areas.