• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2023년도 춘계학술발표대회
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• pp.549-551
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• 2023

차량용 인포테인먼트 시스템은 차량 내부에서 정보와 엔터테인먼트 기능을 제공하는 시스템으로, 현재 급격한 성장세를 보이고 있다. 이에 따라 많은 기업이 차량용 인포테인먼트 관련 기술을 연구하고 개발하고 있다. 이는 결국 차량에서 발생하는 트래픽이 이전보다 증가하는 것을 의미한다. 차량 발생 트래픽은 모바일 트래픽과 달리 시간에 따라 뚜렷한 발생 패턴을 보인다. 이러한 특성을 고려하여 RNN, LSTM, GRU 세 가지 종류의 순환 신경망 모델을 활용하여 차량 트래픽 예측 모델을 구현하였고 시간대별 모델 성능을 비교한 결과, LSTM이 가장 우수한 성능을 보였다.

• 대한한의학회지
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• 제42권1호
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• pp.26-45
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• 2021

Objectives: The purpose of this study was to investigate characteristics of patients who were admitted to an oriental medicine hospital by traffic accident. Methods: The medical charts of 346 patients admitted to an oriental medicine hospital from June 1, 2017 to May 31, 2018 were analyzed. The Numbering Rating Scale (NRS) and duration of hospitalization were used to evaluate characteristics of the patients. Results: Acupuncture, Moxibustion, Infralux were used to treat all the patients. The most frequently used herbal medication was Danggwisu-san(22.25%). 87 patients(25.14%) visited the outpatient department after being discharged from the hospital. The most frequent complaint in terms of pain was cervical pain(82.7%) and of systemic symptom was headache(23.7%). Men and younger aged patients showed higher therapeutic effect than women and older ages. The most common duration of hospitalization was 2~4 days(42.73%) and positively correlated with therapeutic effect. The most frequent interval between time of injury and visit to the hospital was from 0-1 days(68.90%) and showed no relationship with therapeutic effect. The most frequent admission pathway was "Directly to the hospital"(57.51%). Admission pathway was proportionally associated with duration of hospitalization and treatment results were not. The most common vehicle type involved in the traffic accidents was a sedan(72.25%), accident type was a rear-end collision(43.64%) and showed no relationship with therapeutic effect. Conclusions: In this study, therapeutic effects were highly correlated among men, younger ages, and duration of hospital stay, and was not for interval days, admission pathway, vehicle type, and accident type.

• 만화애니메이션 연구
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• 통권43호
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• pp.231-254
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• 2016

그래픽 노블은 시각적 표현 부분 및 서사적 가치의 측면에서 대개 일반 만화와 다르다고 인지된다. 그러나 이 모호한 기준 때문에 각 작품을 통해 그래픽 노블의 잠재성을 제고해야 할 필요성이 제기된다. 이에 본 연구에서는 비교적 최근에 그래픽 노블로 널리 인정받은 작품인 크레이그 톰슨의 "하비비"를 대상으로 표현양식과 서사 양쪽 면에서 그 특성을 분석하고자 한다. 미국 작가가 아랍권의 여성을 그려내기 위해 의도적으로 선택한 표현양식이 어떻게 서사와 연계되는지 분석함으로써, 그래픽 노블이 가질 수 있는 서사적 전략을 살펴볼 수 있을 것으로 보인다. 이에 "하비비"에 나타난 아랍 문자의 이미지화를 중심으로 새로운 표현양식을 연구하고, 게일 루빈의 여성 거래 이론으로 "하비비"에 투영된 여성 성장서사를 살펴, 이것이 어떻게 그래픽 노블의 표현양식과 결합하였는지 연구하였다. 본 연구는 독자적 서사 형식을 지닌 만화 매체로서 그래픽 노블이 가진 표현양식의 스펙트럼을 넓히고, 서사의 잠재성을 연구하는데 도움이 될 것이다.

• 가정과삶의질연구
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• 제15권3호
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• pp.1-14
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• 1997

The purpose of this study is to review current home-based work study and identify factors associated with the choice of home-based work. Home-based work as an alternative form of employment is being sought today by both workers and business. The information age with its empasis on the recoding and transfer of information along with the technology of telectommuting has increased potential for and attention to home-based work. Home-based work seems to have several advantages particulary for women who carry the double burden of household work and paid work. The reduction in traffic congestion and demand of fossil fuels that accompanies the elimination of commuting has also been seen as a important social benifit. Home-base work has potential that can improve women's labor force participation. Further study is needed to evaluate home-based work and critical advice to current and prospect workers.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권1호
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• pp.35-57
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• 2014

Multi-criteria decision making (MCDM) algorithms play an important role in ensuring quality of service in an integrated HetNets (Heterogeneous Networks). The primary objective of this paper is to develop a multi-criteria vertical handoff decision algorithm (VHDA) for best access network selection in an integrated Wireless Local Area Network (WLAN)/Universal Mobile Telecommunications System (UMTS)/Worldwide Interoperability for Microwave Access (WiMAX) system. The proposed design consists of two parts, the first part is the evaluation of an Analytic Hierarchy Process (AHP) to decide the relative weights of handoff decision criteria and the second part computes the final score of the weights to rank network alternatives using Simple Additive Weighting (SAW). SAW ranks the network alternatives in a faster and simpler manner than AHP. The AHP-SAW mathematical model has been designed, evaluated and simulated for streaming video type of traffic. For other traffic type, such as conversational, background and interactive, only simulation results have been discussed and presented in brief. Simulation results reveal that the hierarchical modelling and computing provides optimum solution for access network selection in an integrated environment as obtained results prove to be an acceptable solution to what could be expected in real life scenarios.

• 한국응급구조학회지
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• 제8권1호
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• pp.105-115
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• 2004

The nation is turning into aging society, and safety accidents among elderly people are on the rise. When death roll caused by safety accidents was investigated, senior citizens who died from safety accidents outnumbered the other age groups who died for the same reason. The most common cause of death was traffic accidents, followed by suicide and a hurt from a fall, and Korea rated first among OECD member nations in death roll by traffic accidents. Aging brings a lot of physical changes to elderly people, and they are often likely to be involved in accidents such as a hurt from a fall due to degenerated sensory organs like hearing and eyesight and deteriorated motor skills. Unsafe social facilities also have them face a lot of accidents, including fracture and death, and such accidents take place even at home that is usually considered safe, or are triggered by things of daily use. As a result of comparing every age group's death roll by safety accidents, the number of senior citizens who died from safety accidents was far higher than that of the other age groups who died for the same reason in every accident field. In aging society, a sharp increase in the elderly population and ensuing safety accidents are expected to pose a serious threat to national economy, and diverse efforts should be put into tacking this problem. For instance, safety education should be provided to people in general including senior citizens on a regular basis, and more safety facilities should be prepared. Besides, safety equipment should be developed.

• 대한교통학회지
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• 제30권2호
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• pp.53-65
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• 2012

본 연구는 대중교통을 이용하는 여성통행자가 차내에서 발생하는 성범죄로부터 안전하게 이동할 수 있도록 성범죄피해 현황을 파악하고 개선방안을 제시하기 위하여 수행되었다. 대중교통내에서 발생하는 성범죄 피해현황을 파악하였으며, 이러한 경험이 성범죄를 예방하기 위한 정책을 도출하는데 어떠한 영향을 미치는지 분석하였다. 분석방법은 경기도 직장여성들을 대상으로 심층면접조사를 수행하여 성범죄 피해실태를 파악하고 적절한 대응방안을 모색하기 위하여 구조방정식 모형으로 인과관계를 분석하였다. 그 결과, 여성들은 CCTV와 경고음 설치, 경찰인력의 추가 배치는 성범죄예방에 효과적으로 판단하고 있으나, 여성전용칸 설치는 실효성이 낮은 것으로 평가하였다. 이러한 결과에는 각 개인의 주관적 규범과 지각된 행동통제가 중요하게 영향을 미치는 것으로 나타났다. 이러한 분석결과에 근거하여 대중교통 성범죄 예방을 위한 정책적 대안을 제시하였다.

• 응용통계연구
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• 제25권4호
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• pp.621-632
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• 2012

Recurrent event data can be easily found in longitudinal studies such as clinical trials, reliability fields, and the social sciences; however, there are a few observations that disappear temporarily in sight during the follow-up and then suddenly reappear without notice like the Young Traffic Offenders Program(YTOP) data collected by Farmer et al. (2000). In this article we focused on inference for a cumulative mean function of the recurrent event data with these incomplete observation gaps. Defining a corresponding risk set would be easily accomplished if we know the exact intervals where the observation gaps occur. However, when they are incomplete (if their starting times are known but their terminating times are unknown) we need to estimate a distribution function for the terminating times of the observation gaps. To accomplish this, we treated them as interval-censored and then estimated their distribution using the EM algorithm proposed by Turnbull (1976). We proposed a nonparametric estimator for the cumulative mean function and also a nonparametric test to compare the cumulative mean functions of two groups. Through simulation we investigated the finite-sample performance of the proposed estimator and proposed test. Finally, we applied the proposed methods to YTOP data.

• 한국경제지리학회지
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• 제21권4호
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• pp.335-349
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• 2018

본 연구의 목적은 시간이 경과하면서 통행속도와 같은 교통환경에 나타나는 변화가 대중교통이용자의 시간거리 접근성에 미치는 영향을 분석하는 것이다. 이를 위하여 서울대도시권 대중교통체계의 3개년(2011년, 2013년, 2015년)의 각각 1주일치 통행기록을 담은 교통카드 데이터를 활용한다. 교통카드빅데이터에는 대중교통이용자들의 통행궤적에 대한 시 공간 정보가 담겨 있다. 본 연구에서는 교통카드 자료의 통행시간을 토대로 각 시점의 대중교통체계를 구성하고 있는 지하철 역 및 버스 정류장들 사이의 링크들의 시간거리를 산출한다. 실험 결과로 얻어진 통합 교통망에서 접근도 변화는 두 가지 관점으로 요약할 수 있다. 첫째, 해가 지날수록 접근도는 떨어지는 경향이 있다. 교통망이 더 복잡해짐으로 차량의 이동 속도가 저하되기 때문이다. 둘째, 요일별 접근도 변화 분석에서 주말에 접근도가 높아지는 경향이 있다. 이것은 버스노선들 상의 버스 속도가 주말에 빨라지기 때문이다. 접근도 변화의 분석을 위해 연도별과 요일별 차량속도와 승객수를 그래프로 설명한다.

• 대한약침학회지
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• 제9권2호
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• pp.129-134
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• 2006

Objectives : The purpose of this study was to investigate the clinical progress of patients diagnosed as sequela of traffic accident. Methods : We studied 34 cases who were admitted in Semyung University Oriental Hospital from 1st, January, 2005 to the 31st, December, 2005. And we came to some conclusion about clinical tendencies as follows. Results and Conclusions : 1. Women had occupied more than men, and 14 persons in 20th were the most distribution of age. 2. In distribution of onset, less than 7 days was the most(58.8 %), followed by less then 28 days(20.6 %). 3. Most patients used western medical hospital(47.1 %) and oriental medical hospital(44.1 %) as primary hospital. 4. In chief complaint, cervical pain was most(32 cases, 94.1%), the others were low back pain(22 cases, 64.7 %), back pain(5 cases, 14.7 %), chest pain(5 cases, 14.7 %). 5. In treatment methods, acupuncture and physical therapy was most(33 cases, 97.1%), the others were Extract-med.(31 cases, 94.0%), electric-acupuncture(27 cases, 79.4%), Herb-med.(23 cases, 67.6%), Herb-acupuncture(l8 cases, 52.9%) and Taping therapy(15 cases, 44.1%). 6. In hospital days, $8{\sim}14$days was most(l5 cases, 44.1%), the other were 15-21days(l2 cases, 35.3%). over the 29 days(4 cases, 11.8%) and 22-28 days(3 cases, 8.8%). 7. 34 patients were examined, and all cases were 'improved'. And statistically significance compared after-treatment with before-treatment group(p<0.005).