위치기반 서비스에서 프라이버시를 위한 연속질의와 쿼리 로그 익명화 기법

박소미(Somi Park),배주호(Juho Bai),박석(Seog Park) 한국정보과학회 2010 한국정보과학회 학술발표논문집 Vol.37 No.1A

위치기반 서비스에서 프라이버시를 위한 연속질의와 질의 로그 익명화 기법

박소미(Somi Park),배주호(Juho Bai),박석(Seog Park) 한국정보과학회 2011 정보과학회논문지 : 데이타베이스 Vol.38 No.2

LBS(Location Based Services) are rapidly spread on the basis of GPS-added mobile devices. There are many studies for privacy preserving on LBS because, if LBS Server is exposed by attacker, leaked log can be used to find the exact location and personal information of user by inference attack. In this paper, we propose new anonymizing technique for continuous queries on LBS. It makes the same anonymized groups for continuous queries. It prevents intersected query attack and the intersected set of anonymized groups satisfies Location k-anonymity value. We also provide new architecture for query log anonymizing on LBS server. If attacker can search log record on the server, Object Diversify and Attribute Unlink techniques protect privacy personal information by strategies that anoymize who the actual issuer is, what he looks for, and where he is. This study offers a half reduced processing time on anonymizing process. And it provides determinate anonymized group on large scaled user service or anonymizing environment. 최근 GPS를 탑재한 모바일 기기들의 발전으로 위치기반 서비스의 이용이 확산되고 있다. 그러나 위치기반 서비스는 사용자의 위치정보가 누출될 경우 추론 공격 등을 통해 정확한 위치뿐만이 아니라 신변 정보까지 노출될 수 있는 가능성을 가져 위치정보를 보호하기 위한 위치기반 서비스 익명화 기법에 대한 연구가 대두되고 있다. 본 논문에서는 첫째, 기존 기법의 문제점인 연속적인 질의에 대한 교차공격을 방지할 수 있는 새로운 익명화 기법을 제시한다. 이 기법은 연속적인 질의에 대한 익명화 그룹이 동일하게 생성될 수 있도록 하여 그 그룹들의 교집합이 Location k-anonymity를 만족할 수 있도록 한다. 둘째, 익명화 서버의 질의 로그에 대해 사용자의 질의에 대한 프라이버시를 동시에 고려하는 기법을 제안한다. Object Diversify와 Attribute Unlink 기법을 통하여 공격자가 서버에 저장된 질의 로그에 접근 가능한 경우, 어떠한 사용자가 실제 질의자이고, 어디에서 무엇을 찾고자 하는지를 모호하게 만들어 프라이 버시를 보호한다. 본 연구는 기존 기법들의 문제점을 해결하기 위한 익명화 기법을 이용하여 수행시간을 약 50% 단축하고, 사용자 수나 익명화에 필요한 값이 증가 하더라도 익명화 그룹 범위를 일정 범위로 제한하는 방법을 제시한다.

성막 공정 정밀도 향상을 위한 실시간 성막 속도 측정 시스템

박소미 ( Somi Park ),백승요 ( Seung-yo Baek ),김현빈 ( Hyun-bin Kim ),이종희 ( Jonghee Lee ),이재현 ( Jae-hyun Lee ) 한국공업화학회 2023 공업화학 Vol.34 No.4

범용적으로 고진공 성막 장비에서 사용되는 quartz crystal microbalance (QCM)는 두꺼운 필름이 quartz 위에 성막되는 경우, 크리스탈 고유의 진동에 영향을 주어 사용이 어려워진다. 본 논문에서는 실시간 필름 증착 공정 중에 센서의 손상이 없는 광학적 계측 방식을 통해 필름의 성막 속도를 측정하는 방법을 연구하였다. 기체 이동 경로로 지나가는 페럴린 가스 중 다이머에 의한 레이저의 산란 정도를 측정하여, 페럴린 공정의 분해부 온도가 감소할수록 페럴린 가스 중 다이머의 비율이 증가하는 것을 성공적으로 확인하였다. 또한, 성막된 필름의 특성을 확인한 결과, 분해부 온도가 감소할수록 필름의 두께와 haze가 증가한 것을 확인할 수 있었다. 우리는 연구 결과를 통해 개발한 안정적인 실시간 성막 속도 계측 시스템을 이용함으로써, 진공 공정을 통해 성막하는 페럴린 필름의 정밀한 성막 속도 제어에 활용하고자 한다. The quartz crystal microbalance (QCM), commonly used in high vacuum deposition, becomes difficult to use when a thick film is deposited on the quartz, affecting the crystal's inherent vibration. In this study, a non-destructive optical measurement method was developed to measure the film's deposition rate during the in-situ film deposition process. By measuring the scattered laser intensity caused by the dimer in the parylene gas passing through the gas flow path, it was successfully confirmed that the ratio of the dimer in the parylene gas increases as the pyrolysis temperature decreases. Additionally, it was noted that the film's thickness and haze increase as the pyrolysis temperature decreases by confirming the characteristics of the visible parylene films. Through the research results, we aim to utilize the stable in-situ film deposition rate measurement system to control the precise film deposition rate of parylene films.

간호수기 완전학습 프로그램 개발 및 평가

박소미(Park, SoMi),허혜경(Hur, Hea Kung),김기경(Kim, Ki Kyong),송희영(Song, Hee-Young) 한국간호과학회 2017 Journal of Korean Academy of Nursing Vol.47 No.4

Purpose: This study was undertaken to develop and test a mastery learning program of nursing skills for undergraduate nursing students. Methods: In this methodological study, first, the preliminary draft of a mastery learning program to provide training for nursing skills was developed based on Bloom’s framework for mastery learning. Second, to test the developed program, a single-blinded, nonequivalent control group nonsynchronized study was conducted on 50 senior nursing students in a University selected by convenient sampling. Thirteen students were assigned to a control group; 13, 12, and 13 of them were assigned to intravenous therapy, transfusion, and patient transfer groups, respectively. The achievement levels and performance scores of the selected nursing skills were measured before and after the completion of the program in all the groups. Lastly, the final program was confirmed based on the results of the program testing. Results: Intravenous therapy, transfusion, and patient transfer were selected as essential nursing skills for the program based on the priorities rated by clinical instructors and staff nurses. The achievement levels of selected nursing skills were determined by Angoff scores. After participating in the program, the proportion of passers and performance scores of the nursing skills in the experimental groups were significantly higher than those in the control group. The final program was confirmed which included a diagnostic test, enrichment activities for the passers and three repetitions of corrective activities and formative assessments for non-passers. Conclusion: The results suggest that a mastery learning program for undergraduate students can lead to better improvement and performance of essential nursing skills.

체질량 지수와 생활습관에 따른 한국 가임 여성의 월경장애 유병률과 변화 추이: 국민건강보험공단 국가건강검진(2009~2016) 자료 활용

박소미(Park, SoMi),윤태웅(Yoon, Tae Woong),강대용(Kang, Dae Ryong),정재원(Chung, ChaeWeon) 한국간호과학회 2020 Journal of Korean Academy of Nursing Vol.50 No.3

Purpose: This study was performed to identify the prevalence of menstrual disorders in Korean women based on body mass index (BMI) and lifestyle factors, by utilizing the Korean National Health Insurance Database. Methods: A retrospective observational study design was used for the secondary data analysis. Data of women aged 15 to 49 years who were diagnosed with menstrual disorders were extracted from The National Health Insurance Service-National Health Screening Cohort in Korea from 2009 to 2016. The age-standardized prevalence rate of menstrual disorders was calculated using SAS version 9.4, and a Chi-square test and Cochran-Armitage test were performed. Results: In total, 2,219,445 cases were extracted from the database. The prevalence of menstrual disorders significantly increased from 8.6% to 11.6% (Z=135.16, p for trend <.001) over the past eight years. In particular, it was higher in underweight women than in women with normal weight across all years (Z=-4.18~-14.72, p <.001). Moreover, statistically significant differences in the prevalence of menstrual disorders were found to be associated with drinking and smoking in all years and with physical activity levels in part (p <.05~.001). Conclusion: These findings present compelling evidence on the prevalence of menstrual disorders based on a national database. Since the prevalence of menstrual disorders has steadily increased and differs based on BMI and lifestyle factors, educational and clinical interventions are necessary to promote risk awareness and appropriate behavioral changes among Korean women.

A Study on the Development of a Self-regulated Exercise Maintenance Program for Osteoporotic Elderly Women

박미정(MiJeong Park),김수(Sue Kim),조은희(Eunhee Cho),박소미(SoMi Park),강현철(Hyuncheol Kang) 한국노년학회 2013 한국노년학 Vol.33 No.2

본 연구는 골다공증 노인여성의 지속적인 운동 실천을 통한 근골격계 건강 증진을 돕기 위한 목적으로 자기조절 운동유지 프로그램을 개발하고자 시도되었다. 본 프로그램은 Intervention mapping protocol을 활용하여 요구사정, 목표 설정, 이론 기반의 중재 방법 및 수행 전략 선택, 프로그램 내용개발, 프로그램 적용 및 수행 계획 개발, 프로그램 효과 평가 방법 개발의 6단계를 거쳐 개발되었으며, 운동 자기조절 전략의 하위 개념인 '자기관찰', '목표설정', '사회적지지', '환경적 도움', '강화', '재발방지'를 활용한 건강교육, 복합운동, 자조모임, 운동수첩, 전화상담의 전략적 중재 방법으로 구성되었다. 또한 프로그램 중재 완료 후 가정에서도 골다공증 노인여성들이 지속적으로 운동을 실천하도록 돕기 위해, 도입기 8주에는 건강교육 1회, 복합운동 3회/주, 자조모임 1회/주를, 적응기 4주에는 복합운동 1회/주, 자조모임 1회/주, 전화상담 2회/주를, 유지기 12주 동안에는 운동 실천을 지지하기 위한 보조적인 방법으로 운동수첩을 스스로 작성하도록 프로그램을 구성하였다. 본 연구에서 개발된 자기조절 운동유지 프로그램이 골다공증 노인여성의 건강 증진을 위한 중재 도구로서 다양한 영역에서 활용될 수 있기를 제안한다. The purpose of this study was to develop a self-regulated exercise maintenance program for the purpose of helping regular exercise practice in osteoporotic elderly women. A methodological study was conducted. The program has been developed using an intervention mapping protocol through 6 stages including needs assessment, creation of objectives, theory-based methods and practical strategies, program, adoption and implementation plan, and evaluation plan. The program consists of such strategic intervention methods such as health education, complex exercise, self-help meeting, exercise notebook, and telephone consulting that increase sub-concepts of self-regulated strategies for exercise including self-observation, goal setting, social support, environmental aids, reinforcement, time management, and relapse prevention. The self-regulated exercise maintenance program can be used in various areas as an intervention tool for health increase among osteoporotic elderly women.

확장된 질의 처리를 위해 경로간 의미적 유사도를 고려한 XML 문서 순위화 기법

김현주(Hyun Joo Kim),박소미(Somi Park),박석(Seog Park) 한국정보과학회 2010 정보과학회논문지 : 데이타베이스 Vol.37 No.2

정보기술의 표준으로 사용되고 있는 XML환경에서 방대한 양의 데이터에 대한 사용자의 질의를 효율적이고 정확하게 처리하기 위한 연구가 이슈화되고, 특히 웹 환경에서의 XML문서들은 용어적, 구조적인 측면에서 다양한 형태로 존재하고 있다. 이러한 특성을 갖는 XML 문서들을 대상으로 사용자가 특정한 정보를 얻고자 한다면, 사용자의 질의가 가진 용어 및 구조적 특성과 정확히 일치하지 않는 문서의 정보에 대해서 추가적인 기법이 필요하다. 본 논문은 이와 같은 경우에도 동일한 용어 및 구조를 사용하던 환경에서와 마찬가지로 최상위 순위로 정보를 검색할 수 있는 기법을 제시한다. 또한 정확히 일치하지 않는 문서의 경우에 대해서도 사용자 질의 측과의 경로간 의미적 유사성을 측정하여 사용자 질의와 의미적으로 유사한 경로를 가진 순으로 문서들을 순위화하여 제공한다. 제안된 기법은 실험을 통하여 기존의 기법보다 세밀하고 정확한 검색 결과를 도출함을 보인다. XML is broadly using for data storing and processing. XML is specified its structural characteristic and user can query with XPath when information from data document is needed. XPath query can process when the tern and structure of document and query is matched with each other. However, nowadays there are lots of data documents which are made by using different terminology and structure therefore user can not know the exact idea of target data. In fact, there are many possibilities that target data document has information which user is find or a similar ones. Accordingly user query should be processed when their term usage or structural characteristic is slightly different with data document. In order to do that we suggest a XML document ranking method based on path similarity. The method can measure a semantic similarity between user query and data document using three steps which are position, node and relaxation factors.

호흡곤란 응급관리에 대한 시뮬레이션기반 교육이 간호학생의 지식과 수행자신감에 미치는 효과

허혜경(Hur, Hea Kung),박소미(Park, SoMi) 한국간호교육학회 2012 한국간호교육학회지 Vol.18 No.1

Purpose: The purpose of this study was to identify the effects on knowledge and performance confidence of nursing students in the emergency care of patients with dyspnea after simulation education using a human simulator. Method: The research design was a nonequivalent control group pretest-posttest design. For the experimental group the human simulator was used to provide simulation. Also included were base learning with audio-visual material, explanations about simulation, using SimMan for human simulation, and debriefing. Pre and post-tests were conducted to compare differences in knowledge and performance confidence. Result: The (t=3.83, p<.000) than the control group. For the experimental group, the differences in pretest-posttest scores for knowledge (t=2.30, p=.025) and performance confidence (t=4.28, p<.000) were significantly higher than the experimental group had significantly higher scores for knowledge (t=3.03, p=.004) and performance confidence (t=3.83, p<.001knowledge (t=2.30, p=.025) and performance confidence (t=4.28, p<.000) were significantly higher than the control group. Conclusion: The results of this study indicate that for student nurses, knowledge and performance confidence in emergency care of patients with dyspnea improve with human simulator simulation education. Further study is suggested to develop other scenarios for emergency care and identify the effects of critical thinking and satisfaction when using human simulator simulation education.

영 · 유아 어머니의 환경호르몬 노출위험행위 관련요인

김수경 ( Kim Su Kyung ),박소미 ( Park Somi ) 여성건강간호학회 2017 여성건강간호학회지 Vol.23 No.4

Purpose: The purpose of this study was to examine factors associated with behaviors of mothers that expose their infants to endocrine disruptors. The PROCEED model was used as a theoretical basis for the study. Methods: This correlational study included 120 mothers with infants between the ages of 1 month to 36 months. Participants were recruited through the maternal community web-site of mothers of infants in W city. Results: There was a significant negative correlation among experience of mothers who had participated in environmentally friendly activities, the health status of the infants perceived by the mother, and behaviors of mothers that exposed infants to endocrine disruptors. The factors based on PROCEED model explained 15.3% of the behaviors by mothers that exposed infants to endocrine disruptors. Conclusion: It is necessary to develop and provide educational programs that include detailed information on relationship of endocrine disruptors to children’s health.

간호학생을 위한 응급상황관리 시뮬레이션 실습 교과목 개발 및 적합성 평가

허혜경(Hur, Hea Kung),박소미(Park, SoMi),신윤희(Shin, Yoon Hee),임영미(Lim Young Mi),김기연(Kim, GiYon),김기경(Kim, Ki Kyong),최향옥(Choi, Hyang Ok),최지혜(Choi, Ji Hea) 한국간호교육학회 2013 한국간호교육학회지 Vol.19 No.1

Purpose: This study was to evaluate the applicability of an emergent care management simulation practicum which is for enhancing nursing students emergent care management competency based on the Nursing Education Simulation Model. Methods: One group pre-post experimental design was conducted for evaluation of the applicability of the simulation practicum. A convenient sample of 60 senior nursing students was participated. The simulation practicum was provided for 26 hours per student at the end of the first semester of senior year. Educational practices in simulation scale, simulation design scale and learning outcomes were measured. Higher positive correlations between variables represent applicability. Descriptive analysis, paired t-test and Pearson correlation coefficient were used for data analyses. Results: Among contractual components of nursing education simulation model, educational practices in simulation and simulation design (r=.80, p<.010), learning outcomes (r=.71-.28, p<.050), simulation design and learning outcomes (r=.72-.30, p<.050) were significantly correlated. Critical thinking (t=-3.63, p<.050) and problem solving competence (t=-2.55, p<.050) were significantly increased by this simulation practicum. It represents the applicability of an emergent care management simulation practicum. Conclusion: This emergent care management simulation practicum was appropriate to enhance the nursing students’ emergent care management coping competency.