An Econometric Analysis of Freight Rates for Grain Import in Korea

박준제,박명섭,Jehad Yasin 한국무역학회 2006 Journal of Korea trade Vol.10 No.1

A substantial amount of grain has been shipped from the various major exporting countries to Korea during the last decade. This article uses a cross-sectional econometric model to evaluate structural changes and price differentials in ocean freight rates for grain shipments from various major exporting countries to Korea. Cost factors included in this study are distance and the ship size, and competitive factors are shipping seasons and the Korean flag. Results suggest cost factors, such as distance and ship size play a significant role in determining ocean freight rates, and the ocean shipping industry charges different rates by season and flag. The ocean freight rates for grain shipments are differentiated on the basis of seasons and flag. This study also indicates that ocean freight rate structures have changed during the 1985-1998 period

부산지역 일부 제조업 산업장의 기중 특정화학물질의 경시적 농도 변화

박준제,선병관,손병철,문덕환 한국산업보건학회 2006 한국산업보건학회지 Vol.16 No.1

부산지역 일부 제조업 산업장의 기중 5가지 화학물질의 경시적 농도 변화

박준제 ( Joon Jae Park ),선병관 ( Byong Gwan Sun ),손병철 ( Byung Chul Son ),문덕환 ( Deog Hwan Moon ) 한국산업위생학회 2006 한국산업보건학회지 Vol.16 No.1

This study aimed to prepare the fundamental data and assess the status and trend of exposure level for 5 chemical substances such as sulfuric acid, hydrogen chloride, ammonia, formaldehyde and phenol in manufacturing industry by type of industry, working process, and size of factory, chronological change. Subjects related to this study consist of 146 factories, 12 industries and 17 working processes located in Busan area from Jan. 1997 to Dec. 2001. 1. All 5 kinds of chemical substances by type of industry, working process were generated in chemical manufacturing industry. There were founded in 8 types of industries and 13 types of working processes for ammonia, which is the highest number of in all 5 chemical substances. 2. In terms of the exposure level for 5 chemical substances by type of industry, working process, geometric mean concentration for sulfuric acid was 0.40 mg/m3 in manufacture of chemicals and chemical products, 0.30 mg/m3 in compounding process, for hydrogen chloride was 0.57 ppm in manufacture of basic metal, 0.48 ppm in dyeing process, for ammonia was 1.11 ppm in manufacture of rubber and plastic products, 0.94 ppm in buffing process, for formaldehyde was 0.49 ppm in manufacture of wood and of products of wood and cork, except furniture; manufacture of articles straw and plating materials, 0.53 ppm in mixing process, and for phenol were 0.53 ppm in manufacture of chemical and chemical products, 0.55 ppm in compounding process, respectively. Results for 5 chemical substances by type of industry and working process were significantly higher than those of the others(p<0.05). 3. The exposure level for hydrogen chloride, formaldehyde were significantly increased by size of industry (p<0.01). ammonia was significantly decreased by size of industry (p<0.01). 4. In trend of the concentration difference of five chemical substances by chronology, geometric mean concentration for sulfuric acid was significantly increased (p<0.01), hydrogen chloride and ammonia were significantly decreased by year (p<0.05) and for formaldehyde and phenol were decreased in chronological change. According to the above results 5 chemical substances were founded together in a way mixed in the same places one another and concentrations of chemical substances by industry, working process, size of industry and year appeared markedly. The authors recommend more systemic and effective work environmental management should be conducted in workplaces generating five chemical substances.

폐실질의 자궁내막증 1 예

이정형,박준제,전배성,유인영,박성근 대한산부인과학회 1998 Obstetrics & Gynecology Science Vol.41 No.6

저자들은 Gestrinone 치료로 호전된 폐실질의 자궁내막 증식증 1예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Parenchymal pulmonary endometriosis is a rare cause in patients with hemoptysis, dyspnea, or chest pain, especially. We describe a woman with recurrent hemoptysis during menstruation. Embolization of endometrial tissue from the uterus to the lung via the pulmonary arteries has been proposed for the mechanism of the development of parenchymal endometriosis. The site of origin of hemoptysis was localized on chest. Chest CT scanning appears to be method of the correct intrapulmonary localization of the correct intrapulmonary localization of this disease and then treated with Danazol, Gestrinone or GnRH agonist.

원발성 난소 주 유암종 1 예

노용호,박준제,이채원,최창록,강정오,소영환 대한산부인과학회 1998 Obstetrics & Gynecology Science Vol.41 No.2

Primary trabecular carcinoid tumor of the ovary is an very rare ovarian tumor, behaving like a tumor of low malignant potential. It mostly occurs in women between 20 and 50 years of age and constitutes less than 1 % of all carcinoid tumors. Ovarian carcinoid tumor is frequent coexistence of mature or immature teratoid components. Ovarian carcinoids, without other teratomatous components, are solid, grey-yellow tumors, usually well-encapsuled and slightly lobulated. When other teratomatous components coexist, cystic and semicystic foci are seen. In the younger patient, the treatment is unilateral salpingo-oophorectomy, while in the postmenopausal patient bilateral salpingo-oophorectomy and hysterectomy is the treatment of choice. Chemotherapy or radiotherapy was not needful. Authors have experienced a case of primary trabecular carcinoid tumor of the ovary in a 17 year-old woman, and report with a brief literature review.

KUH 엔진/항공기 적합성 시험 통합절차 수립

김윤환,심재광,박준제 한국항공우주학회 2012 한국항공우주학회 학술발표회 논문집 Vol.2012 No.11

헬리콥터 개발시 구성품 시험, Rig 및 시스템 단위 시험등 수많은 검증단계를 거치게 된다. 지상시험 이후 엔진 가동 조건하에서 모든 시스템을 통합하여 엔진/항공기 통합시험을 수행하고 최종적으로 초도비행 진입 여부를 판단하게 된다. 본 논문에서는 초도 비행 전 수행되어야 하는 시험항목 및 시험조건을 정의하였으며 지상공진을 포함한 헬리콥터의 특성과 다양한 시스템간의 상호관계를 고려하여 안전하고 효율적인 시험절차를 수립하는 방안을 제시하였다. When developing helicopter it is verified through many tests including component level, rig level and system level. After this kind of test, Engine/Aircraft compatibility test should be performed on condition that all systems are integrated and it is finally judged whether first flight goes or not. In this paper, EACT test items and condition performed prior to first flight are classified. In addition, it is proposed how to prepare and perform Engine/Aircraft compatibility test effectively considering helicopter characteristics, safety and system interface.

경계성 Brenner종양 1 예

이정형,하정호,박준제,이채원,최창록,전배성 대한산부인과학회 1996 Obstetrics & Gynecology Science Vol.39 No.12

The Brenner tumor is a relatively rare tumor, and almost always benign, but a few are frankly malignant forms. The third variants between benign and malignant were classified and termed "Borderline Brenner Tumor" for a broader category of Brenner tumor. It has been produced controversy and conflicts to establish criteria for distinguishing borderline Brenner tumors from benign and malignant ones. A case of borderline Brenner tumor that we experienced is presented with a brief review of literature.

한ᆞ중항로의 컨테이너화물 운송수단 선택요인 연구

전일수 ( Il Soo Jun ),박준제 ( Joon Je Park ),심영보 ( Yong Bo Shim ) 韓國海運物流學會 2006 해운물류연구 Vol.51 No.-

난관에서 발생한 양성 낭종성기형종 1 예

김영주,이정형,박완배,하정호,박준제,이채원 대한산부인과학회 1996 Obstetrics & Gynecology Science Vol.39 No.2

저자들은 최근 본병원 산부인과에서 외래를 통하여 진찰받은 37세 여자환자에서 시험적 개복술(exploratorylaparotomy)을 시행하여 병리학적으로 확진된 난관(fallopian tube)의 양성 낭종성 기형종(benign cystic teratoma)의 1예를 경험하였기에 문헌고찰과 함께 이를 보고하는 바이다. Benign teratoma of the fallopian tube are extremely rare lesions. There have been about 50 teratomas as reported previously, of which a majority were cystic. We experienced one case of benign cystic teratoma of fallopian tube in 37 year old woman, who had complaint with abdominal distension and lower abdominal palpable mass. So we report the case and brief review of literatures.