• Title/Summary/Keyword: fast-track

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Development of Evaluation Criteria for Efficient Utilization of Railway Yards in Korea (철도폐선부지의 효율적 활용을 위한 평가기준 개발)

  • Kim, Min Kyeong
    • Ecology and Resilient Infrastructure
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    • v.4 no.2
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    • pp.83-92
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    • 2017
  • Increased investment in environment-friendly transport vehicles has led to rapid transit of railway tracks, double track program, linear improvements in railway lines, and moving railroad routes into the suburbs. They resulted in fast increase of railway yards. However, as the railroad yards being neglected, urban fine sites have been degraded. Local governments kept seeking ways to utilize the railway yards. In addition, Ministry of land, infrastructure and transport enacted "Guidelines for utilization of railway yards". The Guidelines categorized the railway yards into three types; conservation, utilized, and other sites in order to make efficient use of them. The railway yards have been converted and used for parks, rail bike trails, bike paths, and solar projects. It seems that studies are needed on diverse use of the yards and on post evaluation. This study investigated current uses of railway yards, domestic and foreign, and analyzed for the pertinent conditions on natural and cultural landscape, educational value, location and accessibility, potential for recreational area, and development opportunities. In this study, I proposed a quantitative evaluation method, and to find way to diversify the use of railway yards.

A Load-Sharing Scheme using SCTP Multi-homing (SCTP 멀티호밍 특성을 활용한 부하 분산 기법)

  • Song Jeonghwa;Lee Meejeong
    • Journal of KIISE:Information Networking
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    • v.31 no.6
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    • pp.595-607
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    • 2004
  • Networks often evolve to provide a host with multiple access points to the Internet. In this paper, we propose a transport layer load distribution mechanism utilizing the multiple network interfaces simultaneously. We specifically propose an extension of Stream Control Transmission Protoco1 (SCTP) to have load sharing over multiple network interfaces. We named the particular service provided by the Proposed load sharing mechanism to be LS (Load Sharing) mode service. LS mode service is based on the following four key elements: (i) the separation of flow control and congestion control, (ii) congestion window based striping, (iii) redundant packet retransmission for fast packet loss recovery, (iv) a novel mechanism to keep track of the receiver window size with the SACKS even if they arrive out-of-order. Through simulations, it is shown that the proposed LS mode service can aggregate the bandwidth of multiple paths almost ideally despite of the disparity in their bandwidth. When a path with a delay of 100% greater is utilized as the second path, the throughput is enhanced about 20%.

A Study on the Fashion Trend according to the Changes of Cultural Code - Focusing on 2005 Fashion Trends - (문화 코드의 변화에 따른 패션 트렌드 경향 연구 - 2005년 패션 트랜드를 중심으로 -)

  • Kim So-Young;Yang Hee-Young
    • Journal of the Korean Society of Costume
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    • v.56 no.2 s.101
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    • pp.134-146
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    • 2006
  • Modern society is a multi-cultural consumer society, and there are multiple trends to cater to the tastes of diverse consumers with different sociocultural background. To grasp fashion trends in fast-changing society, how consumer life is changing and what sort of trend is prevailing should be understood above all. A major fashion trend keeps on changing in every season, and that is an extensive and compound measure of what affects the lives and values of cultural receivers who take the lead in it. The purpose of this study was to delve into what sorts of trends were presented in the 21st century's different cultures, how those cultures were reflected in fashion trends, and how design elements predicted by fashion trends could serve as the sources of design that could create a new fashion. The findings of the study were as follows: First of all, the theories of popular culture and trends were reviewed to describe how general receivers found meaning and delight in the products of cultural industry in their own way and how the products were converted into diverse cultural media. Secondly, consumer styles were discussed by classifying consumers into six groups, twixter, duppie, Ubi-Nomad, NONOS, LOHAS and chav, who were generated by changing cultural codes. Thirdly, sociocultural trends and consumer changes brought a lot of diverse changes to fashion trends. The visual materials about the 2005 S/S, F/W Collection were examined to track how changing trends affected fashion style.

Outcomes of Critical Pathway in Laparoscopic and Open Surgical Treatments for Gastric Cancer Patients: Patients Selection for Fast-Track Program through Retrospective Analysis

  • Choi, Ji Woo;Xuan, Yi;Hur, Hoon;Byun, Cheul Su;Han, Sang-Uk;Cho, Yong Kwan
    • Journal of Gastric Cancer
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    • v.13 no.2
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    • pp.98-105
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    • 2013
  • Purpose: The aim of this study is to investigate the clinical factors affecting on the cure rate by invasive and open surgery for gastric cancer and to establish a subgroup of patients who can be applied by the early recovery after surgery program through this retrospective analysis. Materials and Methods: In this retrospective study, we analyzed 425 patients who underwent gastric cancer surgery between January 2011 and December 2011 and were managed with conventional clinical therapies. This clinical algorithm was made when the patient was in minimally invasive surgery group and discharged from hospital one day faster than them in open surgery group. Results: The completion rate of the clinical pathway was 62.4%. Despite the different applications of clinical pathway, completion rate in minimally invasive surgery group was significantly higher than that of open group (P<0.001). In multivariate analysis, the surgical procedure of minimally invasive surgery (odds ratio=4.281) was the most predictable factor to complete clinical pathway. Additionally, younger patients (odds ratio=1.933) who underwent distal gastrectomy (odds ratio=1.999) without combined resection (odds ratio=3.069) were predicted to accomplish the clinical pathway without any modifications. Conclusions: We concluded that high efficacy of the clinical pathway for gastric cancer surgery was expected to selected patients through retrospective analysis (expected completion rate=85.4%). In addition, these patients would become enrolled criteria for early recovery program in gastric cancer surgery.

Study of the Tracking Fire Risk by Dust Resistivity of Pens (축사별 먼지 저항률에 따른 트래킹화재 위험성에 관한 연구)

  • Park, Kwang-Muk;Bang, Sun-Bae;Kim, Jae-Hyun;Park, Jin-Yeong
    • Fire Science and Engineering
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    • v.30 no.6
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    • pp.99-104
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    • 2016
  • In animal and plant facilities, dust samples were collected from cattle sheds, pigsties and hen-houses, which have high proportion of electrical fires. The samples were diluted in distilled water and water resistivity was measured. Current measurements and tracking reappearance experiments were conducted using distilled water with dust samples. The analysis results were obtained to track the fire risks according to the dust resistivity. The highest value was the dust from cattle sheds followed in order by the dust of pigsties and hen-houses. In experiments measuring the temperature change and RMS current, the lower resistivity of water showed a significant trend of temperature and high amperage. In the tracking reappearance experiment with the lower resistivity water, the tracking speed was fast and the ignition time was shortened. This study investigated why each dust resistivity shows different results.

Tracking Algorithm Based on Moving Slide Window for Manuevering Target (이동표적을 위한 이동 창 함수 기반 추적 알고리즘)

  • Bae, Jinho;Lee, Chong Hyun;Jeon, Hyoung-Goo
    • Journal of the Institute of Electronics and Information Engineers
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    • v.53 no.4
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    • pp.129-135
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    • 2016
  • In this paper, we propose a novel tracking algorithm called slide window tracker (SWT) suitable for maneuvering target. To efficiently estimate trajectory of moving target, we adopt a sliding piecewise linear window which includes past trace information. By adjusting the window parameters, the proposed algorithm is to reduce measurement noise and to track fast maneuvering target with little computational increment as compared to ${\alpha}-{\beta}$ tracker. Throughout the computer simulations, we verify outstanding tracking performance of the SWT algorithm in noisy linear and nonlinear trajectories. Also, we show that the SWT algorithm is not sensitive to initial model parameter selection, which gives large degree of freedom in applying the SWT algorithm to unknown time-varying measurement environments.

RESEARCH TRENDS IN THE CELLULOSE REINFORCED FIBROUS CONCRETE IN USA

  • Soroushian, Parviz;Ravanbakhsh, Sizvosh
    • Proceedings of the Korea Concrete Institute Conference
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    • 1997.10a
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    • pp.3-23
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    • 1997
  • The growth in fast-track construction and repair has prompted major efforts to develop high-early-strength concrete mix compositions. Such mixtures rely on the use of relatively high cement contents and accelerator dosages to increase the rate of strength development. The measures, however, seem to compromise the long-term performance of concrete in applications such as full-depth patches as evidenced by occasional premature deterioration of such patches. The hypothesis successfully validated in this research was that traditional methods of increasing the early-age strength of concrete, involving the use of high cement and accelerator contents, increase the moisture and thermal movements of concrete. Restraint of such movements in actual field conditions, by external or internal restraining factors, generates tensile stresses which introduced microcracks and thus increase the permeability of concrete. This increase in permeability accelerates various processes of concrete deterioration, including freeze-thaw attack. Fiver reinforcement of concrete is an effective approach to the control of microcrack and crack development under tensile stresses. Fibers, however, have not been known of accelerating the process of strength gain in concrete. The recently developed specialty cellulose fibers, however, were found in this research to be highly effective in increasing the early-age strength of concrete. This provides a unique opportunity to increase the rate of strength gain in concrete without increasing moisture an thermal movements, which actually controlling the processes of microcracking and racking in concrete. Laboratory test results confirmed the desirable resistance of specialty cellulose fiber reinforced High-early-strength concrete to restrained shrinkage microcracking an cracking, and to different processes of deterioration under weathering effects.

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Implementation of an Effective Human Head Tracking System Using the Ellipse Modeling and Color Information (타원 모델링과 칼라정보를 이용한 효율적인 머리 추적 시스템 구현)

  • Park, Dong-Sun;Yoon, Sook
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.38 no.6
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    • pp.684-691
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    • 2001
  • In this paper, we design and implement a system which recognizes and tracks a human head on a sequence of images. In this paper, the color of the skin and ellipse modeling is used as feature vectors to recognize the human head. And the modified time-varying edge detection method and the vertical projection method is used to acquire regions of the motion from images with very complex backgrounds. To select the head from the acquired candidate regions, the process for thresholding on the basis of the I-component of YIQ color information and mapping with ellipse modeling is used. The designed system shows an excellent performance in the cases of the rotated heads, occluded heads, and tilted heads as well as in the case of the normal up-right heads. And in this paper, the combinational technique of motion-based tracking and recognition-based tracking is used to track the human head exactly even though the human head moves fast.

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An Adaptive Receiver Using Reduced-state Sequence Detection for the Trellis-coded CPFSK (트렐리스 부호화된 CPFSK의 적응 수신기)

  • 송형규
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.9 no.6
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    • pp.746-760
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    • 1998
  • In this paper, an adaptive RSSD(reduced-state sequence detection) receiver is proposed for the purpose of reducing the complexity and decision delay of the adaptive MLSD(maximum-likelihood sequence detection) receiver in the mobile satellite channel. The RSSD receiver reconstructs the trellis with a reduced number of states. The performance degradation due to the reduced states is compensated by modifying the branch metric calculation which uses the symbols in each path memory to estimate the residual ISI(intersymbol interference) terms. The structure of the proposed adaptive RSSD is a modified RSSD utilizing a per-survivor processing as well as the symbol-aided method and a channel estimation using the tentative data sequences. The complexity and performance of the proposed adaptive RSSD are controlled by the number of system states and ISI cancelers and the inserting period of the known symbols. In spite of a suboptimal alternative receiver compared to the adaptive MLSD receiver, the proposed adaptive RSSD receiver is able to reduce the complexity significantly and track the time-varying channel fast and reliably.

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A study on standardization & completion of transfer consultation record for patients transferred to emergency medical center (응급의료센터로 전원된 환자의 진료의뢰서 표준화 및 충실도에 관한 연구)

  • Yoou, Soonkyu;Kim, Kwang Hwan;Cho, Hae Kyung
    • The Korean Journal of Emergency Medical Services
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    • v.5 no.1
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    • pp.177-198
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    • 2001
  • The purpose of this research which was conducted by surveying the transfer consultation records from 360 medical institutions such as general hospitals, hospitals, clinics to the Emergency Medical Center at E University Hospital for six months(Jan. 1, 2000 - Jun. 30, 2000) are to standardize & complete transfer consultation record of hospitals at the 1st & 2nd referral level and to give patients transferred emergency medical center medical information services on a better quality. The conclusions and suggestions from this study were summarized as follows; (1) Examing the distribution of the referral medical consultation(transfer) sheet type, surgery part local clinic sheet types were 34.4%, medical part local clinic sheet types were 26.7%, undifferentiated local clinic sheet types were 23.9% and hospital level sheet types were 15.0%. (2) The items of the transfer consultation records had been standardized more than 75% in the order of patient's name, date, doctor's name, diagnosis, patient's status, impressions. (3) That the degree of recording completion on these items is in the order of patient's name, date, diagnosis, impressions was revealed. (4) Because the standardization and the degree of recording completion are very low in the patient's gender, age, address, electronic recording system was needed for more perfect input of initial patient informations. (5) This standardizing & complete recording on examination and medication will prevent re-examination and abuse of medication for patients transferred emergency medical center. (6) EMT Transfer System should be fixed in all medical institute for the standardizing & complete recording on care period and departure time will give many emergency patients the proper treatments at the proper time. (7) It was revealed that developing new standardized transfer consultation record & using electronic recording system are needed. (8) The complete recording & Fast Track System were needed for higher rate of bed operation at emergency medical center and more hospital profit.

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