열간공구강 DH32 소재의 열간단조품 개발에 관한 연구

장진형,김현수,김종현,김현필,김용조,Jang, Jin-Hyung,Kim, Hyun-Su,Kim, Jong-Hyeon,Kim, Hyun-Pil,Kim, Young-Jo 한국금형공학회 2012 한국금형공학회지 Vol.6 No.1

Hot tool steel, in general, has not been used as a material in hot forging. However such a hot tool steel is recently applied to forging materials by recent forging technology. DH32 is known as a kind of hot tool steels, which is developed for characteristics of excellent strength and toughness in high temperature. Feasibility of DH32 to hot forging material has been researched to develop the hot forging technology of a plunger used for a large-sized marine fuel pump. Hot compression experimental works were performed to investigate the hot strain characteristic of DH32 and with the experimental results FE simulations were also conducted for the design of forging processes and preform. It is found out through the hot compression experimental works that DH32 has a hot brittleness at more than $1150^{\circ}C$.

계획예방정비가 발전소 공기예열기의 성능에 미치는 영향

장진형(Jin-Hyung Jang),홍은기(Eun-Kee Hong),황광원(Kwang-Won Hwang),윤린(Rin Yun) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5

계획예방정비가 발전소 공기예열기의 성능에 미치는 영향

장진형(Jin-Hyung Jang),홍은기(Eun-Kee Hong),황광원(Kwang-Won Hwang),윤린(Rin Yun) 대한기계학회 2010 大韓機械學會論文集B Vol.34 No.5

발전설비 내 공기예열기는 보일러 연소가스로부터 열을 회수하여 유효열의 손실을 감소시킴으로서 보일러의 열효율을 높이기 위해 설치된다. 본 연구에서는 계획예방정비가 공기예열기의 성능에 미치는 영향을 고찰하였다. 공기예열기의 성능지표들은 공기예열기의 계획예방정비 전후의 운전 상태와 성능변화 모두를 고려하여 계산되었고, 공기예열기의 중요한 성능지표로는 가스 측 온도효율, 공기누설률, 열회수율, 열관류율과 열용량비들이다. 계획예방정비 전후의 공기예열기 성능평가로부터 공기예열기의 모든 성능 지표가 계획예방 정비 후 향상되었다. Air heater used in power plant helps increase the thermal efficiency of the boiler by recovering the heat from the boiler flue gas and thus preventing the loss of useful heat. This study investigates the effect of preventive maintenance on the performance of the air heater in a power plant. Performance indexes for the air heater are calculated to observe the changes in the performance and operation status of the air heater before and after preventive maintenance. The major performance indexes considered are temperature efficiency of the flue gas side, air leakage rate, heat recovery rate, heat transmission rate, and heat capacity ratio. The performance of the air heater is evaluated before and after preventive maintenance; our results show that all the abovementioned performance indexes are improved after the maintenance.

계획예방정비가 발전소 공기예열기의 성능에 미치는 영향

장진형(Jin-Hyung Jang),홍은기(Eun-Kee Hong),황광원(Kwang-Won Hwang),윤린(Rin Yun) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5

성능개선 공사후 터빈 열성능 변화 분석

김광홍(Kwang-Hong Kim),장진형(Jin-Hyung Jang),황광원(Kwang-Won Hwang),홍은기(Eun-Kee Hong),원종범(Jong-Bum Won) 한국유체기계학회 2008 유체기계 연구개발 발표회 논문집 Vol.2008 No.-

經營統制手段으로서의 책任會計制度

張鎭亨 大邱大學校 社會科學硏究所 1985 社會文化硏究 Vol.4 No.-

사립(전문)대학회계에 대한 고찰 : 관련 법령을 중심으로 Laying Stress on Related Statutes

장진형 대구대학교 경제경영연구소 2003 경제경영연구 Vol.2 No.1

영리회계, 비영리회계를 불문하고 이해관계자들의 유용한 회계정보에 대한 수요는 점차 증가하고 있다. 본 연구에서는 사립대학 및 사립전문대학 이해관계자들의 이러한 회계정보욕구에 부응할 수 있도록 사립대학의 회계처리 및 재무보고의 기준이 되는 회계관련 법령을 고찰함으로써 이의 개선방안을 제시하고자 하였다. 사립(전문)대학 회계관련 주요 법령으로는 사립학교법, 사립학교법시행령, 사학기관 재무·회계규칙, 사학기관 재무·회계규칙에 대한 특례규칙을 들 수 있다. 이들 중 사학기관 재무·회계규칙에 대한 특례규칙은 사립(전문)대학의 예산, 결산의 구체적인 내용을 규정하고 있으며, 5차에 걸쳐 개정되어 제정 당시에 비해 상당히 개선되었다. 그러나 아직도 회계처리, 감사, 공개 등에 있어 미비점이 발견되고 있다. 사학기관 재무·회계규칙에 대한 특례규칙은 회계원칙을 보강하고 기본금대체액의 한도와 범위를 명확히 하며 감가상각을 실시하는 방향으로 보완되어야 할 것이다. 또 공인회계사에 의한 감사대상을 확대하고 예·결산 내용을 효과적으로 공개할 수 있는 방안을 강구하는 방향으로 보완되어야 할 것이다. 이렇게 함으로써 사립(전문)대학의 이해관계자들에게 좀 더 유용한 회계정보를 제공할 수 있을 것이다. Regardless of business or nonbusiness accounting, interested parties' demand for useful accounting information increases gradually. This study presents improvements on laws and ordinances concerning accounting and financial reporting for private universities and junior colleges in order to meet their interested parties' needs for such a useful accounting information. The important accounting statutes are law of private school, private school law enforcement ordinance, finance and accounting rule of private school institute and the exception rule against the finance and accounting rule of private school institute. Among these, the exception rule was providing the concrete contents of the budgeting. accounting and closing procedure of the private universities and colleges. It was amended five times since enactment, so was improved considerably. But there is a room for improvement in accounting, auditing, disclosure and so forth. The exception rule should be complemented in the way accounting principles are reinforced, the limit and the scope of transfer to the capital are clarified. the depreciation is executed. And it should be complemented in the way the audit clients are expanded by the CPA, the contents of budget and closing is disclosed effectively. Like this it will be able to provide more useful accounting information with the interested parties of the private universities and the private junior college.

말단거대증을 동반한 Albright 증후군 1 예

임동명,김순호,임중규,허진득,장진형,김훤,위대철,윤철승 대한내분비학회 1992 Endocrinology and metabolism Vol.7 No.4

The syndrome of polyostotic fibrous dysplasia (PFD), cutaneous pigmentation and endocrinopathy (Albright's syndrome) continuous today to remain enigmatic. Not all patient with PFD have complete syndrome. In addition to the described in Albright's original patients, other endocrinopathies have been reported, including hyperthyroidism, acromegaly, hyperparathyroidism, Cushing's syndrome, adenoma of pituitary, thyroid, parathyroid and adrenal gland, vitamine Dresistant rickets and hypothalamic hypogonadotrophic hypogonadism. A 27-year-old man was found to have polyostotic fibrous dysplasia of bone, cutaneous pigmentation and acromegaly with diabetes mellitus. He started to have pain in left hip joint and it caused an alternation on his gait in 1983. X-ray study revealed that he had fibrous dysplasia. He gradually developed clinical feature of acromegaly. Subsequent biochemical study of growth hormone and radiologic study of the sellar confirmed the diagnosis of acromegaly. Bone biopsy and microscopic examination of the pituitary tumor tissue obtained through transsphenoidal procedure were reported to be fibrous dysplasia and acidophilic adenoma, respectively. The purpose of this report is to describe a patient with incomplete Albright's syndrome with acromegaly, which is very rare and we believe this is the first case to be reported in Korean literature.(J Kor Soc Endocrinol 7:402~408, 1992)

이차성 알도스테론증을 동반한 부신피질 선암 1예

김호동,김연종,임중규,허진득,윤형신,장진형,김훤,손장신 대한내분비학회 1992 Endocrinology and metabolism Vol.7 No.2

Adrenal cortical carcinoma is a rare tumor that affects all ages and sexes and has a dismal prognosis. Half are functioning and half are not. Functioning neoplasma of the adrenal cortex are clinically manifested by virilization, Cushing's syndrome, feminization, or hyperaldosteronism. A 22-year-old female was admitted to our hospital in April 1990, because of amenorrhea for 6 months, hirsuitism, acne and palpable mass in left upper abdomen for 3 months. Routine laboratory examination including blood chemistry gave no abnormalities. Abdoiminal CT scan demonstrated a large mass with central necrosis and calcification, about 10×15 cm size in left upper abdomen. Endocrine tests revealed; serum testosterone 7.5ng/dl, DHEA-sulfate above 1,000ng/dl, 24-hour urine free cortisol 152 ng/day, 17-KS 50.8 ng/day, 17-OHCS 9.9mg/day. Plasma aldosterone and plasma renin activity were elevated. We report a case of adrenocortical carcinoma with hypersecretion of glucocorticoid and androgen.She also had a secondary aldosteronsm and lung metastasis. She underwent surgical resection of the tumor and treated with mitotan (O.P'-DDD) postoperatively (J Kor Soc Endocrinol 7:160~164, 1992).