A survey of knowledge and behavior regarding skin cancer.

( Young Bin Shin ),( Jeong Won Jo ),( Hae Bong Jeong ),( Yun Sun Moon ),( Do Seon Jeong ),( Chi Yeon Kim ),( Tae Jin Yoon ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.2

Background: The recognition of prevention and early detection of skin cancer has been increased more than before. Although skin cancer is not rare, most patients are little known about general awareness of skin cancer. Objectives: In this study, we survey the awareness and knowledge of skin cancer and sun protection behavior among South-Gyeongnam province. Methods: We reviewed a written questionnaire and patients’ self-checked records including patients’ basic medical information and knowledge of skin cancer protective modalities. Results: In total 284 subjects (94.7%(284/300), 67%(190/284) females, mean age 57.4 years) completed the survey. Most people (77.5%, 220/284) knew that the sun was most dangerous for their skin but relatively large portion of them (42.7%, 94/220) had no action to protective attitude like sun screen, large hat and gloves. Conclusion: The results show that many participants had known necessity of skin cancer prevention and importance of early detection, but didn’t have had any protective action. Therefore, a more effective skin cancer education and prevention program is needed. We suggest that the measurement of effects of a multimodal educational intervention on knowledge of sun protection practices and engagement in self sun-protection behaviors also need to be check.

[P509] Lichen planus pigmentosus presenting with flexural area

( Young Bin Shin ),( Jeong Won Jo ),( Hae Bong Jeong ),( Yun Sun Moon ),( Do Seon Jeong ),( Eui Chang Jung ),( Chi Yeon Kim ),( Tae Jin Yoon ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

Lichen planus pigmentosus (LPP) is an uncommon variant of lichen planus that tends to occur in middle-aged individuals with darker pigmented skin. Clinical findings include hyperpigmented, brown to gray-brown macules and patches on sun-exposed areas and, in the rare inversus variant, on the flexural areas and intertriginous zones. The pattern of pigmentation is generally diffuse, although follicular, reticular, and unilateral linear variants have been described. We recently encountered a rare case of LPP developed in flexural area, not in sun-exposed area. A 58-year-old male patient presented with brown macules on the inguinal area for 6 months. One or two dark brown macules first appeared and spread gradually. A physical examination showed multiple, ill-defined, dark brown macules on inguinal area. The dermoscopic finding showed mottled pattern and elevated margin. The incisional biopsy was performed and a diagnosis of LPP was made. The fact that LPP can develop in non-sun-exposed areas as well as sun-exposed ones requires a new hypothesis for the pathogenesis of LPP.

Drive-by download 취약점 대응방안 연구

채영진, 김선주, 조인준 배재대학교 공학연구소 2014 공학논문집 Vol.16 No.1

현대 사회에서 놀라울 정도로 발전되고 실생활에 많은 부분을 차지하게 된 인터넷은 바이러스, 스파이웨어, 트로이목마, 봇, 루트도구와 가짜 보안 소프트웨어의 유포에 집중되고 있다. 2009년부터 시작되어 지금까지 대규모의 개인정보 유출 사건이 발생하였고, 이러한 피해를 일으키는 여러 공격 행위 중 드라이브 바이 다운로드(Drive-by download)가 최근에 심각한 위협으로 대두되고 있다. 인터넷의 특성은 오픈되어 있다는 점에서 이 드라이브 바이 다운로드의 취약점을 해결하는 것이 급선무이다. 이에 본 논문에서는 드라이브 바이 다운로드 공격 기법을 분석하고, 그에 따른 대응 방안을 제시하고자 한다. 제안한 방안은 Vmware Server를 도입하여 악성코드 탑재유무를 확인하고, 디렉터리 권한을 제한하여 악성코드의 실행을 막아 기존 Web Server System을 보호하는 방안이다.

USB 메모리 장치 정보 및 암호를 기반으로 한 사용자 인증정보 관리 방안

이진해, 김선주, 이진우, 조인준 배재대학교 공학연구소 2016 공학논문집 Vol.18 No.1

Presently, one of user authentication methods is ID/PW that we use. This one has some advantages that are low cost in terms of building and easy to use. But, authentication information consisted of only possible ID and password is always exposed to security attack such as password guessing attack, replay attack. In order to compensate the defect, There are some authentication methods such as security card, OTP, certificate and fingerprint verification. Those are method that we use at least two ways to pass user authentication. Password only accessible to user, medium which user already have and their own biometrics are used to confirm in user authentication. In this thesis, we suggest scheme that is useful to user authentication information for safety by combining USB device information with user’s password, creating user authentication information and then storing in USB memory, in case of user authentication, using user authentication information that is stored in it. Although user authentication information stored in USB memory is exposed to hacker, it can’t be used because of not agreeing USB device information. Even if password is exposed to someone as well, it can’t be used due to not agreeing USB memory information. That is why USB memory device information and user password is combined. Our proposal system has low cost of building infrastructure(ID/PW method) and high convenience. Thus, proposed system which is cheap, convenient and has high security enables existing ID/PW method to build without additory expense. We expect all companies to use this one. 현재 우리가 사용하고 있는 사용자 인증방법 중에 ID/PW방식이 있다. ID/PW방식은 구축비용이 저렴하고 사용이 편리한 장점이 있다. 하지만 ID와 패스워드로만 구성된 인증정보들은 Password guessing attack, Reply attack 등 다양한 보안공격에 노출되어 있다. 이를 보완하기 위해 보안카드, OTP, 인증서 지문인식 등의 인증방법 들이 있다. 이러한 인증방법들은 두 가지 이상의 인증수단을 이용하여 사용자를 인증한다. 사용자만 알고 있는 비밀번호 이외 사용자가 가지고 있는 매체나 사용자의 고유한 생체 정보를 이용하여 사용자 인증에 사용한다. 하지만 앞에서 언급했던 인증 시스템들은 새로운 인증요소를 추가함으로써 인증에 필요한 새로운 인프라 구축비용 및 인증에 편리성이 저하되는 단점을 가지고 있다. 본 논문에서는 USB 디바이스 정보와 사용자의 비밀번호를 조합하여 사용자의 인증정보를 생성하여 USB 메모리에 저장하고, 사용자 인증이 필요한 경우 USB 메모리에 저장된 사용자 인증정보를 불러와 사용함으로써 사용자 인증정보를 안전하게 관리 할 수 있는 방안을 제안하였다. 이를 통해 해커에 의해 USB 메모리에 저장된 사용자의 인증정보가 노출되어도 USB 메모리 디바이스 기기 정보가 일치하지 않기 때문에 사용자 인증정보를 사용할 수 없다. 또한 비밀번호가 노출되어도 USB 메모리 정보가 일치하기 않기 때문에 사용자 인증정보를 사용할 수 없다. 또한 비밀번호가 노출되어도 USB 메모리 디바이스 정보와 사용자 패스워드가 조합된 인증정보로 인해 사용이 불가능하다. 또한 제안 시스템은 ID/PW 방식의 저렴한 구축비용과 편리성을 높인 장점을 가지고 있다. 따라서 저렴하고 편리하고, 보안성까지 높인 제안 시스템은 기존의 ID/PW방식에 추가적인 비용 없이 구축이 가능하다. 향후 모든 기업에서 사용할 수 있을 것으로 기대한다.

유전체 배리어 방전 플라즈마를 이용한 애시드레드 27 수용액의 색도 제거

조진오,김병남,목영선 제주대학교 공과대학 첨단기술연구소 2006 尖端技術硏究所論文集 Vol.17 No.2

The physicochemical processes of dielectric barrier discharge (DBD) such as in-situ formation of chemically active species and emission of UV light were utilized for the decolorization of an aqueous solution formed with distilled water and an azo dye Acid Red 27. The DBD reactor consisted of two coaxial dielectric tubes with different diameters. Aqueous electrolyte solution was filled in the inner tube, which acted as the discharging electrode. The DBD reactor was submerged in the Acid Red 27 solution that was grounded. In this case, the Acid Red 27 solution acted not only as the counter electrode but also as the cooling medium of the DBD reactor. The DBD reactor with the aqueous discharging electrode was found to be more energy-efficient for the generation of ozone than that with typical metal electrode. The chemically active species (mostly ozone) produced in the DBD reactor were well dispersed in the Acid Red 27 solution using a porous gas diffuser, thereby increasing the gas-liquid contact area available for the decolorization. The results have clearly shown that the DBD reactor system was very effective for decolorizing the Acid Red 27 solution. For the purpose of improving the performance of the DBD reactor system, MnO_(2) catalyst was added to the Acid Red 27 solution. It was found that the catalyst significantly enhanced the decolorization.

暗渠排水 施設導入에 따른 汎用畓의 土壤物理性 變化

趙來淸,金善柱,陳成基,都德鉉 건국대학교 생명과학연구원 1994 생명과학지 Vol.1 No.-

In an existing rice paddy, we established an subsuface drainage and a auxilialy drainage at proper intervals to accelerate the underground drainage. In the process of building up a rotation field. we studied the little physical change of the soil over 24 months. Various tests were conducted (a. Munsell soil color test b. Constant head permeability and permeability test c. Examination of aeration, degree of hardness, waterproof quality d. Shear resistance and friction resistance test e. Moisture content and specific gravity test and f. Measurement of moisture content and void ratio by nuclear density meter). These tests were conducted by many people on soil from each plot. Results of the study are as follows. Paddy fields of Korea have a particularity different from the European countries and America that drain the excess soil water from the shallow surface soil layer. The facing problems on the planning and designing of subsurface drainage are determining the spacing of main subsurface drainage system, combination design of main and auxiliary subsuface drainage system and the structure of subsuface drainage ditch. The structure of subsurface drainage ditch consist of drainage pipe and filling materials such as rice bran and pebbles. The width of subsuface drainage ditch is 20cm in case of trencher operation and 30cm in case of back hoe excavation. The advisable depth of subsuface drainage ditch is below 50cm. In an subsuface drainage plot, the supporting force and the plate sinking volume increased, But the moisture content and specific gravity test, according to the tests had a tendency to decrease. Similarly, moisture content and void ratio as indicated by the nuclear density meter generally showed a tendency to decrease. In addition, aeration, degree of hardness, and the waterproof aggregates percent of soil generally incleased in an subsuface drainage plot. From the above results, we found that when an subsuface drainage was establshed in a silty rice paddy having poor permeability, the physical qualities of that rice paddy became those of a dry field.

국제 스포츠 정보 시스템의 동향 분석

육조영,임정일,윤찬호,이무연,노덕선,배진희,이승훈 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

As Follow suggested : The purpose of this study was to consider tendency of modern sports information. today Modernst information system had four areas such as collection, clearance, communication and application So, most literuture of America and Europe was collected, cleared, communicated and apilcated in international sports data base. If we utillited communication circuit properly, we could use sports information beneficently at the laboratory and office. In the future and now, one was that special sports institution needed to obtain Education about sports imformation such as information of specialization, and information of knowledge on both soft phase and hard phase of new media. Although korea used date base of foriegn country efficiently, korea had to make effort to create its own information system and wish to avoid friction of economy and fiction of information.

기체 전기방전을 이용한 리액티브 블루 4의 분해에 관한 연구

목영선,조진오,이호원 제주대학교 공과대학 첨단기술연구소 2006 尖端技術硏究所論文集 Vol.17 No.1

Gaseous electrical discharge is an effective method available for the production of ozone and ultraviolet light. The wastewater treatment system of this study was designed to utilize both ozone and ultraviolet light produced by the electrical discharge for the degradation- of organic contaminants. The electrical discharge device (DBD reactor) consisted of a quartz cylinder, a coaxial ceramic tube inside of which a steel rod was placed (discharging electrode), and a steel wire that was helically wound around the quartz cylinder (ground electrode). The DBD reactor was immersed in the wastewater in order that the ultraviolet light could irradiate the wastewater. The ozone-containing gas from the DBD reactor was sparged throughout the wastewater. An anthraquinone-based dye, Reactive Blue 4, was chosen as the organic contaminant. The experimental results showed that the present system was very effective for the degradation of the organic contaminant. The energy requirement for the degradation was found to be 0.42kJ/mg, on the basis of 90% chromaticity removal.

남부지역에서의 양파 수확, 저장 및 유통실태

권병선,이을태,오용비,정동희,이조진 順天大學校 師範大學 附屬 科學敎育硏究所 1996 科學과 敎育 Vol.4 No.-

This study was carried out to find marketing, storage and harvest of onion in southern parts of Korea from Jan. 1994 to Apr. 1994. Early maturing cultivar harvest between 10th and 20th of May but late maturing cultivar harvest between 10th and 20th of June, this period was busy farming season with a shortage of labor. Early maturing cultivar was send out good directly but late maturing cultivar was send out good after shortage the simple store house with the period 7-9 month, and professional seed production farmer are not in here. We hope that this report stimulates research to investigate for the establishment of not only harvesting practices such as varietal improvement, machanical harvesting and disease resistant variety for the storage.

김치저장성 향상을 위한 동결방법이 배추조직의 물성변화에 미치는 영향

양진한,박소희,유진현,임호수,조재선,황성연 한국식생활문화학회 2003 韓國食生活文化學會誌 Vol.18 No.2

김치를 10˚C에서 8일간 숙성시켜 산도 0.6~0.7%로 숙성된 김치를 -70˚C와 -20˚C로 냉동하며 -20˚C에서 저장하면서 배추 조직의 elasticity, hardness, 세포 조직의 변화, 드립양을 실험한 결과는 다음과 같다. -70˚C에서 급속 동결한 것과 -20˚C에서 완만 동결한 냉동 김치 중 배추조직의 elasticity는 냉동 저장 15일까지 감소하다 일정하게 유지되었고 hardness는 거의 변화가 없었으며 냉동 방법에 따른 변화도 거의 나타나지 않았다. 투과 전자현미경으로 관찰한 결과 control의 경우 세포벽이 매우 두꺼우며 세포의 모양들이 잘 보존되어 잇는 것을 볼 수 있었고 -20˚C로 냉동 처리하여 해동시킨 세포벽들은 많이 손상되어 있음을 볼 수 있었으며 -70˚C로 급속 냉동시료의 경우 세포벽의 손상 정도가 -20˚C로 냉동 처리한 시료보다 덜 파괴되어 있음을 볼 수 있었다.한편 냉동 저장기간 동안 드립의 손실량의 변화는 -70˚C로 냉동 처리한 시료의 드립양은 3~4%정도로 -20˚C로 냉동 처리한 시료의 5~6%에 비해 적은 것을 알 수 있었다. This study was conducted to investigate the effect of freezing methods, show freezing at -20℃ and rapid freezing at -70℃, on physical properties of Chinese cabbage in frozen Kimchi during storage at -20℃. Elasticity of midrib of Chinese cabbage in frozen Kimchi was decreased until 15 days and did not changed thereafter during storage at -20℃, Hardness of that was not changed during storage. Those results of elasticity and hardness of slow frozen sample are similar to rapid frozen sample. By the morphological observation through transmission electron microscope, more of cellular structure of Chinese cabbage in slow frozen was destructed than that of rapid frozen sample. Drip loss was more in slow frozen sample than that in rapid one.