IEEE 802.15.4 무선 PAN의 Slotted CSMA/CA MAC 시뮬레이션

이해림,정민영,이태진,Lee Hae Rim,Chung Min Young,Lee Tae-Jin 한국시뮬레이션학회 2005 한국시뮬레이션학회 논문지 Vol.14 No.3

IEEE 802.15.4 low-rate Wireless Personal Area Networks (WPAN) are expected to provide ubiquitous networking between small personal/home devices and sensors with low power consumption and low cost features. The technology employs special CSMA/CA (Carrier Sense Multiple Access/collision Avoidance) to save power consumption for small or portable WPAN-enabled devices. In this paper, we simulation the slotted CSMA/CA of IEEE 802.15.4 MAC and evaluate its performance limit in order to grasp the characteristics of Medium Access Control (MAC) of IEEE 802.15.4 WPAN.

북한의 무역권(와크)에 관한 연구 : 재산권 이론에 의한 접근

이해림 ( Lee Hae Rim ),양문수 ( Yang Moon Soo ) 평화문제연구소 2018 統一問題硏究 Vol.30 No.2

본 연구는 북한의 무역권을 재산권 관점에서 접근하고자 한다. 특히 무역제도로부터 무역권을 사용권, 양도권, 발효권, 소득권으로 분할 구성하였다. 이는 북한 무역의 분권화 과정을 다양한 각도로 분석하여 북한 무역 메커니즘을 이해하는 실마리가 된다. 북한 무역 메커니즘 관련 기존 연구는 정치역학적 관계나 분권화 차원에서 시도되었으나 분권화 개념이 모호하거나 특수경제 범위만 다루었다는 한계가 있다. 북한 경제를 이행경제 차원에서 재산권으로 접근한 연구도 있으나 유형자산만을 대상으로 하였다. 북한에서는 경제활동 자체가 재산권이 되기에 북한 경제 이해에 있어 무형의 경제활동 권리를 분석하는 시도가 필요하다. 이러한 문제의식을 기반으로 본 연구에서는 1990~2015년 내각 무역을 범위로 북한 무역권의 구성 변화를 개별 무역품목 및 국민경제적 관점에서 살펴보았다. 이에 따라 무역 통제와 활성화라는 모순된 목적 달성을 위한 북한의 제도 변화를 무역권 차원에서 분석하였다. 또한, 무역단위의 권리 행사 수준을 수치화하여 시기별 자율성 정도를 파악하였다. 본 연구는 북한 무역을 재산권 차원에서 접근한 새로운 시도가 되고 향후 북한의 무역관리 방법에 대한 단서를 제공할 수 있을 것이다 This study is about trade rights in North Korea in the perspective of the property rights. Trade rights are composed of four different rights through the trade institutions in North Korea; rights of control, rights of transfer, rights of implementation, and rights of residual income. These form the premise of the analysis. We can deeply understand the mechanism of trade in North Korea in the view of decentralization through this approach. Existing researches are mostly about decentralization of trade rights which is not upon the specific notion of decentralization, nor upon the political impacts on trade systems that is limited to privileged parts in North Korean economy. There are also some researches about tangible property rights in North Korea, regarding North Korean economy in the progress of transition. Since the economy in North Korea is managed by plans and control of the regime, it is also important to study intangible rights that makes it possible to be engaged in business behaviors, which has not tried before. On the basis of some limitations of previous studies mentioned, this study analyzed the changes of the composition of trade rights in North Korea from 1990s to 2015 in the range of the economy managed by North Korean cabinet. It focuses on analyzing trade rights in different view on individual item unit, individual trade unit, and national economic perspective. Through these analysis, we can see the institutional changes and the regime’s tries to control and increase trade at the same time in North Korea.

체외수정시술 후 삼태 임신에서 다태 임신 감수술의 시행으로 성립된 쌍태 임신의 주산기 예후

이해림(Hae Rim Lee),이동선(Dong Sun Lee),박은주(Eun Ju Park),김성훈(Sung Hoon Kim),전대준(Dae Joon Cheon),채희동(Hee Dong Chae),김정훈(Chung Hoon Kim),강병문(Byung Moon Kang),박견(Kyun Park),장윤석(Yoon Seok Chang) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.3

N/A Objective:To investigate the perinatal outcome and complications of reduced twin pregnancies from triplet by multifetal pregnancy reduction (MFPR) in patients who underwent in vitro fertilization and embryo transfer. Materials and methods:From January 1995 to December 1999, a total of 71 twin pregnancies were included in this study. The patients were grouped into the MFPR group (n = 19) and the non-MFPR group (n = 59). The pregnancies in the MFPR group were reduced to twin from triplet by the MFPR. MFPR was performed by transvaginal sonography-guided fetal aspiration or mechanical trauma. The obstetric and perinatal outcomes were compared between the two groups. Statistical analysis was performed using Student's t-test, Fisher's exact test, and χ2 test as appropriate. Statistical significance was defined as p < 0.05. Results:There were no significant differences in mean gestational age and distribution of gestational age between the two groups. However, the fetal loss rate before 24 weeks of gestation was significantly higher in the MFPR group than the non-MFPR group. We did not find any significant differences in mean birth weight and weight discordancy between the two groups. There were no differences in obstetric and perinatal outcomes between the MFPR and non MFPR groups as well. Conclusion:These data suggest that pregnancy outcome of reduced twin pregnancies from triplet by MFPR in patients underwent IVF-ET might be comparable to that of non-reduced twin pregnancies.

쌀 관세화 유예와 농가소득 간의 관계 분석

이해림 ( Hae Rim Lee ),이홍식 ( Hong Shik Lee ) 한국국제통상학회 2016 국제통상연구 Vol.21 No.1

한국의 농업은 급속한 경제성장과 함께 산업구조의 변화로 인해 쇠락의 길을 걷게 되었으며, 특히 GATT의 BOP조항의 졸업으로 촉발된 UR협정을 계기로 농가경제는 더욱 어려움을 겪어왔다. 이런 가운데 FTA 추진의 본격화로 농업의 문제는 국가적 최대 관심사가 되어왔다. 특히 한국 정부는 UR에서 국내 쌀 시장의 보호를 위해 WTO의 관세화 원칙에 대한 예외로 지난 20년 동안 특별대우를 받아 관세화 유예를 인정 받아왔다. 본 논문에서는 이러한 쌀 관세화 유예로 인한 보호무역정책으로서의 TRQ가 실제 농가소득과 부가가치 창출에 실질적 이득을 가져왔는지 논의해보고자 한다. 분석 방법으로는 SCM을 사용하였으며, 시뮬레이션위주의 기존연구와는 달리, 쌀을 포함한 39개 농작물의 1980년부터 2012년까지 자료를 통해 2005년을 기준연도로 하여 실증 분석을 시도하였다. SCM분석 결과에 따르면, 쌀 시장에 대한 관세 유예화로 인한 TRQ가 실질적으로 쌀 농가를 보호하였다는 증거는 발견할 수 없으며, 오히려 농가소득 및 부가가치가 감소한 것으로 나타났다. Korean agriculture sector has declined along the rapid economic growth and changes in industrial structure. Furthermore, the economy of farm households has suffered from UR Agreements on agriculture, which began when South Korea was excluded from the country list of import restriction permission. In the meantime, as the Korean government started FTA negotiation in earnest, the agricultural sector has become a hot potato for the whole nation. South Korea received preferential treatment in the past two decades, enjoying the deferred traffication on agricultural sector because the Korean government earned exceptional status for domestic rice market in UR Rounds case. The present study is aimed to examine whether Tariff Rate Quotas (TRQ) as a protective trade policy through the delayed tariffication on Korean rice market has substantially contributed to the rise of farm household incomes and created added valued. SCM (Synthetic Control Method) was employed as analysis method. Unlike other simulation-based studies, this paper tried to carry out an empirical study with the actual data of 39 crops including rice from 1980 to 2012, using 2005 as the base year. The results form SCM analysis demonstrated that TRQ through the delayed tariffication on Korean rice market have negative protection effect on Korean farm households contrary to expectation.

국내외 정보통신표준화 교육 현황 분석

이해림(Hae-Rim Lee),유성필(Sung-Pil Yu),조은주(Eun-Ju Jo) 한국통신학회 2011 한국통신학회 학술대회논문집 Vol.2011 No.2

고려후기 마애불에 대한 고찰

이해림(Lee, Hae-rim) 한국미술사학회 2019 美術史學硏究 Vol.301 No.301

安城 仙遊洞 磨崖四尊佛象에 대한 考察

李海林(Lee, Hae Rim) 한국문화사학회 2016 文化史學 Vol.0 No.46

Weight Reduction of Boom System of an Aerial Lift Truck Using the Taguchi Method

Henry Panganiban,Hae-Rim Lee(이해림),Yong Hong(홍룡),Gang-Won Jang(장강원),Tae-Jin Chung(정태진) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5

Weight reduction by optimizing the design of the boom system for the aerial platform truck is performed using the Taguchi method. Matrix experiments were performed using the constructed orthogonal array of design parameters or factors with a maximum of three settings or levels for each factor. The factors considered are the overlap length between booms, crosssection shape and plate thicknesses. Experiments were carried out with parametric analysis setup in ANSYS Workbench while the optimization is done in Minitab. The CAE-based optimization method enables concept design and verification to be performed over a short period of time. The optimal design has reduced the weight of the boom system by over 10% with structural performance close to the original design.

견갑골강화운동이 만성 뇌졸중환자의 견갑골 대칭성 위치와 체간조절 및 균형능력에 미치는 영향

최재욱(Choi, Jae-Wook),조혜영(Cho, Hye-Young),곽동직(Kwak, Dong-Jick),이해림(Lee, Hae-Rim),원득연(Won, Deuk-Yeon),김명기(Kim, Myoung-Ki) 한국사회체육학회 2016 한국사회체육학회지 Vol.0 No.65

The purpose of this study was to investigate the effects of scapular strength exercise including conservation exercise on trunk control and dynamic balance of chronic stroke patients. The subjects for this study were 20 chronic stroke patients. Participants were randomly assigned to scapular strength exercise group(n=10) and conservation exercise therapy group(n=10). Two group were executed during 30min a day, 5 times a week during 4 weeks. Subjects were measured for paretic side’s distances from thoracic vertebrae to scapular, trunk control, balance. All date were analyzed by paired t-test and independent t-test of SPSS/PC ver 20.0. After 4 weeks of scapular strength exercise including conservation exercise therapy was showed significantly effective in scapular symmetrical position, trunk control scale and dynamic balance(burg’s balance scale, time up & go). These results suggest that SSEG was more considerably increased on scapular location, trunk control scale and dynamic balance than CEG. In conclusion, the scapular stabilization exercise in chronic stroke patients caused by brain injury was effective for improvement in scapular location, trunk control scale and dynamic balance.

보건학과와 비보건학과 대학생들의 치과공포도와 구강보건 교육 후 치과공포 인식변화

남설희(Seoul-Hee Nam),김민진(Min-Jin Kim),김서희(Seo-Hui Kim),변효은(Hyo-Eun Byun),백승훈(Seung-Hun Baek),이해림(Hae-Rim Lee),정은설(Eun-Seol Jeong),홍소연(So-Yeon Hong),정미애(Mi-Ae Jeong) 한국콘텐츠학회 2017 한국콘텐츠학회논문지 Vol.17 No.10

본 연구는 대학생들에게 구강보건교육이 치과공포도와 구강보건교육 후 치과공포에 대한 인식변화에 효과가 있는지 알아보고자 한다. A지역에 위치한 B대학교에 재학 중인 보건관련 재학생과 비보건관련 재학생을 대상으로 2017년 4월 5일부터 4월 12일까지 대상자들에게 교육을 실시하여 교육 전 설문조사, 교육후 설문조사를 시행하였다. 결과를 SPSS 19.0 프로그램을 사용하여 통계자료를 T-test를 사용하여 추출하였다. 결과로는 교육 후 치과진료에 대한 두려움은 보건학과 학생이 비보건학과 학생보다 더 크게 감소한 것으로 나타났다. 비보건학과 학생들이 보건학과 학생들에 비해 강의 후 구강건강에 대한 인식변화가 더 크게 나타났다. 치과진료에 대한 교육 후 구강건강에 대한 인식변화는 비보건학과 학생들에 비해 보건학과 학생들에게서 더 크게 나타났다. 추후에 효율적이고 전문적인 교육으로 치과위생사를 배출하여야 하고, 이를 통해 교육자로서의 치위생사 배출이 국민의 치과진료에 대한 공포도를 줄이고 인식을 변화시켜야 한다. 따라서 그들이 구강건강의 중요성과 구강병 예방과 초기 치료의 중요성을 인지하여 치과 내원을 두려워하지 않도록 공포도 및 인식관리를 위한 효과적인 교육 프로그램을 개발해야 한다고 사료되었다. This study is to seek a method to alleviate fear of dental treatment among college students. Research objects are students in public health department and those in other departments on. B University located in area A from April 5, 2017 to April 12, 2017. They were provided with education, and given two surveys before and after the education. The survey data were analyzed with the SPSS 19.0 program using T-test. The findings of the analysis are as follows. After the education, fear of dental treatment was reduced more among students in the public Health Department than among those in other departments. After education on dental treatment, there were greater changes in oral health among students in non-public health departments than those in the Public Health Department. There were grater changes in oral health among students in the Public Health Department than those in other departments. It is necessary to cultivate dental technicians through efficient and professional education, and those dental technicians should serve to reduce fear of dental care among the people, and change consciousness on such treatments. Accordingly, it is necessary to develop efficient education programs to reduce fear and increase the consciousness of dental health among people, and make people not afraid of coming to dental clinic.