소형 기기용 효율적인 바이트 코드 검증기술에 관한 연구

황철준,조증보,정민수 慶南大學校 附設 工業技術硏究所 2003 硏究論文集 Vol.21 No.2

USIM(Universal Subscriber Identity Module) 기술은 데이터의 관리와 보호를 하나의 소형 칩 내에 집약시킨 기술로 최근에 이 기술에 대한 관심도가 증가하고 있다. 자바카드 가상기계는 자바 언어로 작성된 프로그램이 USIM 칩 내부에서 실행 가능하도록 해준다. 하지만 자바카드 가상 기계는 자원 제약적인 디바이스의 특성으로 인하여 검증기술을 제공하지 않는다. 본 논문에서는 정적 체크 기반의 효율적인 바이트코드 검증기를 제안한다. 연구 결과 본 논문에서 제안하는 검증기는 일반적인 것에 비해 90% 이상의 사이즈가 감소되었다. As Universal Subscriber Identity Module (USIM) technology can handle, manager and protect data within a small sized chip, peopled are more interested in USIM technology lately. Java Card Virtual Machine (JCVM) enables programs written by Java programming language to be run in smart cards with USIM chips. However JCVM does not have a verifier as limits of hardware. In this paper, we propose a ByteCode verifier with novel algorithm based on Static Check policy. We experiment that the size of our verifier is reduced by 90% over generals.

골반내에 발생한 Proximal-type 유상피성 육종 1예

길준철,이상수,전병화,김성훈,손우석,목정은,박양순,강길현 대한부인종양 콜포스코피학회 2003 Journal of Gynecologic Oncology Vol.14 No.4

유상피성 육종은 매우 드문 악성 연조직 육종으로, 전형적인 경우들은 주로 젊은 남성의 수부, 전완부와 같은 신체의 원위부에 피하 혹은 심재성 피부 종괴로 발생하며, 조직학적 소견상 적은 비정형성을 나타내는 유상피성 세포와 방추형 세포의 증식에 의한 다발성 결절 형태의 배열을 보인다. 최근에 전형적인 유상피성 육종과 조직학적 유사성을 가지나 더 공격적인 형태인 proximal-type 유상피성 육종이 보고되었으며, proximal-type은 전형적인 유상피성 육종에 비하여 현저한 유상피성 세포의 발현과 매우 심한 비정형성을 나타내며, 세포가 매우 크고, 소포성 핵과 뚜렷한 핵소체를 보이며, 자주 rhabdoid 세포의 양상을 띈다. 임상적으로는 전형적인 형태에 비하여 호발 연령이 조금 늦고, 주로 체간부에, 특히 골반, 회음부, 생식기 등과 같은 심부에 발생하고, 더욱 공격적인 양상을 나타낸다. 저자들은 13세 소녀에서 원발부위를 알 수 없는, 골반내에 발생한 proximal-type 유상피성 육종 1예를 경험하여, 문헌 고찰과 함께 보고하는 바이다. Epithelioid sarcoma is a rare malignant soft-tissue sarcoma with an unknown histiogenesis, typically presenting as a subcutaneous or deep dermal mass lesion in the distal portions of the extremities of young adults. Recently, a more aggressive, so-called 'proximal-type' epithelioid sarcoma has been reported. In contrast to conventional epithelioid sarcoma, the proximal type is characterized by a predominantly large cell epithelioid cytomorphology, marked cytologic atypia, and frequent occurrence of rhabdoid features in most patients. Proximal-type epithelioid sarcoma has a predilection for appearing in the genitalia, especially the vulva, penis, pelvis and buttocks. Also this lesion appears to be somewhat more aggressive or at least metastasizes earlier than the conventional epithelioid sarcoma. We report a 13-year-old girl who presented with a buge mass filling the pelvic cavity which was painful, hard and fixed on palpation, and was radiologically diagnosed as a malignant germ cell tumors on the CT scan. The mass was surgically excised and pathologically proved to be an proximal-type epithelioid sarcoma of unknown origin.

상사·종업원교환관계(LMX)와 팀·종업원교환관계(TMX)가 임파워먼트와 조직몰입에 미치는 영향

박준철 釜山 大學校 經營 經濟 硏究所 2009 經營 經濟 硏究 Vol.28 No.1

악골에 발생한 악성 섬유성조직구종 2례

정종철,최홍란,오희균,박준아,류선열,이종호,김영운,정숭룡 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.3

Malignant fibrous histiocytoma rarely occurs in the jaws. Although the histogenesis of this tumor remains controversal, it is best regarded as a primitive and pleomorphic nature reflected by collagen production and occasional phagocytosis. It is common for metastatic foci to appear in lung and regional lymph node. There are variable treatments such as radiotherapy, surgical excision or combination, therapy of surgical excision, chemotherapy and radiotherapy. With the review of literatures, the authors report the clinical study of two cases of malignant fibrous histiocytoma of the jaw.

두부외상환자에서의 예후인자

최성혁,문준동,김수진,문철규,이성우,홍윤식 대한응급의학회 2001 대한응급의학회지 Vol.12 No.2

Background: Predicting outcome after head trauma is of great interest for clinicians, especially in the early stage. It may provide a basis for therapeutic strategies and may be helpful to select different approaches. But, reliable outcome prediction from head trauma is still unresolved. The purpose of this study is to determine which clinical parameters can be used effectively after an event of head trauma. Methods: In our study we studied head trauma patients who came to the Emergency department of Korea University Medical School Anam Hospital from the 1st of June 1998 to 31th of January 2000, looked into medical records, and studied the records in a retrospective manner. The head trauma patients were divied into two group, a) favourable outcome-related and b) unfavourable outcome-related. The two groups were then subdivided according to their sex, age, the mechanism of their injury, the time they came in, alcohol drinking, loss of consciousness, vomiting, pupil change, previous medical illness, associated injuries and were seperately compared and analyzed. And the factors affecting Glasgow Outcome Scale(GOS) were analyzed in the parameters of Injury Severity Score(ISS), Revised Trauma Score(RTS), Glasgow Coma Scale(GCS), motor score of GCS(mGCS), Marshall Computed Tomographic Classification(MCTC). Statistically, t-test and Mann-Whistney rank sum test using Jandel-sigma were used in the study and then were assessed in Chi-square analysis methods. The statistical significance was determined at a level of p less than 0.05. Results: The total of the head trauma patients, added up to 129 people, 99:males and 30:females. Among this sum, 99 patients showed a favourable outcome and 30 patients showed an unfavourable outcome at discharge. The causes of injury included: automobile accident in 42 cases; fallss in 26; assaults in 6; and accidental-slipping injury etc in 55 cases. 12 patients had bilateral unreactive pupils on admission, 2 had unilateral reactive pupils, and 113 had bilateral reactive pupils. Compared to the favourable outcome-related head trauma group, the unfavourable outcome-relared head trauma group had more history of loss of consciousness, unreactive pupils and tended to have previous medical illness. There were no difference in alcohol related, vomiting and associated injuries between two groups(favourable outcome-related head trauma group: unfavourable outcome-related head trauma group). Substantial difference were observed in GCS, mGCS, ISS, RTS, MCTC between two groups. Patients with unfavourable outcome had a significantly higher ISS, lower RTS, lower mGCS. After MCTC, patients with mass lesion had unfavourable outcome than patients with diffuse injury. Conclusion: Age, history of loss of consciousness, previous medical illness and unreactive pupil change are predictives of outcomes of head trauma patients with respect to Glasgow outcome scale. The lower GCS, lower RTS, lower mGCS, higher ISS, mass lesion based on CT scan provide poorer prognostic outcome in patients with head trauma. Use of prognostic factors thorough complete history taking and physical examination would provide useful prognostic information and facilitate improved therapeutic decision-malting in head-injuried patients.

음주 외상 환자

이성우,문준동,최성혁,문철규,홍윤식 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2

Background: We studied the incidence of trauma caused by alcohol related accidents, and the effects that alcohol has on the occurrence, the extent, and the outcome to the patient. Methods: In our study we studied trauma patients excluding pediatric patients(15 years old and under) who came to the Emergency department of Korea University Medical School Anam Hospital from the 1st of January 1996 to 30th of June 1996, looked into their medical records, and studied the records in a retrospective manner. The trauma patients were devided into two groups, a) alcohol-related and b) alcohol-non-related. The two groups were then subdivided according to their sex, age, the time they came in, the anatomical part of the trauma, the mechanism of their injury, the extent of the injury, the length of their hospital stay, the length of their ED stay and were seperately compared and analyzed. Statistically, ANOVA and logistic regression analysis using SAS were used in the study and then was assessed in Chi-square analysis methods. Results: The total of the trauma patients, added up to 832 people, 577:male and 255:female. Among this sum, 163 trauma patients were alcohol related(male:127 & female:36). 115 people were in the age group of 21-40. Compared to the non-alcohol related trauma group, the alcohol-related group had more facial & scalp injuries and tended to come in the hours between 0-6 AM. The cause of the injuries were mostly by fist-fighting and suicide, compared to mostly accidental-slipping injuries in the non alcohol-related group. There were no difference in the degree of the injury(ISS) and the length of hospital stay between the two groups, whereas the length of the stay at the ED was longer to the alcohol-related trauma patients. Conclusion: Alcohol related trauma patients were mostly in their 20s and 30s, came to the hospital at a late time and the reason for their visit were mostly because of fist fighting. In the Emergency department, because prompt and correct diagnosis is quite difficult to make in this group, their ED stay tended to be longer. We can conclude that measuring the blood alcohol level of these patients, continuing the psychological therapy and educating people is needed.

Raphanus sativus Var. Chungpihongsim의 hairy root 배양에 의한 anthocyanin 생성

황성진,백윤웅,고경민,안준철,황백 全南大學校 農漁村開發硏究所 1991 農業科學技術硏究 Vol.26 No.-

청피홍심무우를 재료로 A. rhizogenes A₄균주를 접종하여 hairy root를 유도하였으며 유도된 hairy root는 paper electrophoresis를 통하여 mannopine과 agropine이 검출되어 형질전환 되었음을 확인하였다. Hairy root는 MS의 기본염을 1/2로 희석시킨 1/2 MS, sucrose 3%, pH 5.2로 조성된 배지에서 최적인 성장을 보였다. 유도된 hairy root는 각 strain사이에 색소능에 다소간의 차이를 보였으며 2, 4-D kinetin의 적절한 조합의 처리구에서는 탈분화와 더불어 색소가 형성되었고, 그 중 2, 4-D와 kinetin을 각각 1 ppm, 5 ppm 처리하였을 때 최대 색소능을 보였다. hairy root의 탈분화시 형성되는 색소는 원 식물 뿌리의 주 색소인 pelargonidin 계열의 색소로 추정되며 총 색소량은 49mg/100g(F.W.)로 잠정 계산되었다. Hairy root induced following inoculation of the root disc and plantlet fragment of R. sativus Var Chungpihongsim with A. rhizogenes A₄. The hairy root contained agropine and mannopine. Medium contained 1/2 MS salt, sucrose 3%, pH 5.2 was optimized to growth of hairy root. Depending on the hairy root line, the level of pigment in hairy root varied somewhat . When 2, 4-D and kinetin were added in hairy root, the synthesis of pigment induced with deorganization of hairy root. Especially, addition of 2, 4-D 1 ppm and kinetin 5 ppm showed the maximum synthesis of pigment. Compared with anthocyanin extract of mature root three pigments were assumed to acylated pelargonin. The content of anthocyanin in these sample was 49mg/100(F.W.).

IMMUNOPOTENTIATION AND IMPROVEMENT OF SOME NUTRITIVE INGREDIENTS BY ADDITIVE CONTAINING Panax ginseng CULTURE ROOT IN EEL CULTURE

Jun Cheul Ahn,Won Seog Cheong,Hong Beom Ko,Hye Sun Cho 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

Design and Implementation of Web Server Communication Protocol for Java USIM Card

Cheul-Jun Hwang,Tae-Heon Noh,Min-soo Jung 한국멀티미디어학회 2008 한국멀티미디어학회 국제학술대회 Vol.2008 No.-

USIM is embedded on mobile internet equipments or user certification systems. Its main purpose is user certification and storing sensitiveness dates. Since USIM computing power (cups, memory space) has been enhanced recently and USIM has an open platform structures, we can develop various application services for USIM card. For this reason, we suggest a new web based USIM Interface service - WebUSIM. This system is working as a small Web Server thus TCP/IP packet processing and http message services are enabled. Since WebUSIM supports TCP/IP function, it can provide seamless types of web application services by USIM card. For WebUSIM, we suggest a new IP over IS07816 communication protocol. IP over ISO7816 can provide more powerful Web services on USIM card.

연구논문 : 호텔종사원의 조직공정성, 조직몰입, 종업원노력이 역할 내 행동에 미치는 영향

박준철 ( Jun Cheul Park ),정기호 ( Gi Ho Jeong ) 대한관광경영학회 2007 觀光硏究 Vol.22 No.1