• Journal of Korean Society of Transportation
• /
• v.27 no.1
• /
• pp.97-105
• /
• 2009

It is expected that logistics standardization have an great effect on industry and national economy due to cost saving and improving efficiency. Therefore all countries of the world make a strenuous effort to take a lead of logistics standardization Despite such efforts of every country, our country remained a lukewarm attitude about logistics standardization. Especially, our country remained a lukewarm attitude about logistics standardization effect quantify. We have to suggest the necessity of standardization and the effect for carrying out logistics standard. So, this study performed literature review and case study for development of effect valuation method. Also, this study developed effect valuation standard for quantifiable standardization effect and drew the effect valuation standard model. First, the measure of preliminary effectiveness was chosen for MOE selection. As a results, vehicle load ratio, delivery cost, keeping space efficiency warehouse automation ratio, etc. were selected. Then, vehicle/truck load ratio, warehouse keeping efficiency, up unloading hour, packaging cost, consistency transportation ratio were chosen for MOE of pallet standardization.

• 한국ITS학회:학술대회논문집
• /
• 2004.11a
• /
• pp.30-35
• /
• 2004

• Journal of the Korean Society for information Management
• /
• v.17 no.4
• /
• pp.67-81
• /
• 2000

This study discussed why Precision(& Recall) is not a good effectiveness measurement of IR system providing ranked results, reviewed other effectiveness measurements appropriate for ranked results, and proposed new measurements based on the average rank of relevant documents retrieved. The 18 case-sets of ranked results were used for evaluating 10 effectiveness measurements including proposed measurements. Simple measurements were significantly similar with the 11-Point Precision requiring complicated calculation.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.5
• /
• pp.2579-2586
• /
• 2014

It is crucial to set up early the required performance of surface ship for preventing the risk factors such as an excess of performance, cost and period in development stage. In this study, MOP and MOE are proposed to establish the method for deriving alternatives, MOP represents the defensive effect for anti ship missiles and MOE is the ratio of cost and performance. The 16 engagement scenarios which selectively install RF decoy, RF jammer, CIWS and anti air missile are suggested. The simulation results by using NORAM tool operated by ROK Navy show that the ship survivability is 0.605~0.975 and MOP is 0.301~0.887. The analyzed results represent the operating scenario with RF decoy, RF jammer and short range anti air missile is the best cost and effectiveness measure.

• Journal of Korean Society of Transportation
• /
• v.20 no.1
• /
• pp.19-38
• /
• 2002

To evaluate the effects of transportation system operation, usually measures of effectiveness(MOE) such as travel time, space mean speed, stop/delay ratio have been used. But, energy consumption as well as the existing MOE in transportation receives more attention as an alternative MOE in transportation operation. The purpose of this study is a development of procedure, which could measure the relative energy consumption for each alternative and compare the results. A mesoscopic simulator called INTEGRATION is used to evaluate the operation of high occupancy vehicle lane, signal optimization, lane expansion, and the application of ITS. Among those, the application of ITS shows the greatest effectiveness in energy reduction, and then lane expansion, signal optimization, and the operation of high occupancy vehicle lane in the order named. Because we don't consider the characteristics of vehicle class, Potential demand and the simulation time is just for an hour. it is recommended that a procedure for precise economic analysis and an improvement in methodology are needed in the future for the expanded application of this study.

• Review of KIISC
• /
• v.19 no.2
• /
• pp.16-25
• /
• 2009

네트워크 기술의 발달에 따른 서비스의 증가는 네트워크 트래픽과 함께 취약점도 증대하여 이를 악용하는 행위도 늘어나고 있다. 따라서 네트워크 침입탐지 시스템은 증가하는 트래픽의 양을 처리할 수 있어야 하며, 악의적인 행동을 효과적으로 탐지 할 수 있어야 한다. 증가하는 트래픽을 효과적으로 처리하고 탐지의 정확성을 높이기 위해 처리 데이터를 감소시키는 기술이 요구된다. 이러한 방법들은 크게 데이터 필터링, 척도 선택, 데이터 클러스터링의 영역으로 구분되며, 본 논문에서는 척도 선택의 방법으로 데이터 처리의 감소 및 효과적 침입탐지를 수행할 수 있음을 보이고자 한다. 실험 데이터는 KDDCUP 99 데이터 셋을 이용하였으며, 통계적 척도선택의 방법으로 분류율, 오탐율, 거리값, 규칙, 선택된 척도 등을 제시함으로써 침입 탐지 시 데이터 처리량이 감소하였고, 분류율은 증가, 오탐율은 감소하여 침입 탐지 정확성이 높아짐을 알 수 있었다. 또한 본 논문에서 제시한 방법이 다른 관련연구에서 제시한 선택 척도보다 높은 정확성을 보임으로써 보다 유용함을 증명할 수 있었다.

• Journal of Digital Convergence
• /
• v.16 no.6
• /
• pp.27-35
• /
• 2018

This study aims to develop the scale for business effectiveness targeting microcredit users. For this, based on domestic preceding researchers empirically handling the microcredit and also focus group interviews with users and specialists, total 30 preliminary questions were composed. After that, conducting the exploratory factor analysis targeting 127 finally collected surveys, in the results of analysis, the scale validity of three factors and 24 questions was verified. Also, considering the goodness-of-fit of model through the confirmatory factor analysis, the effectiveness scale of microcredit business was determined. The concrete factors included 5 questions of the store operation, 3 questions of business start-up satisfaction, and 16 questions of management competency. Lastly, based on the effectiveness scale of business developed by this study, the research direction and the practical development direction of microcredit was suggested.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.11 no.6
• /
• pp.15-22
• /
• 2012

A performance index of singalized intersections is a standard to optimize signal control variables and to manage traffic flow. Traffic delays is generally used to minimize the average delay time on intersections or networks, progression efficiency is used to improve travel speed of main cooridors or to provide transit signal priority. We manage traffic flows with only selecting one index between delays and progression according to the objective of traffic management and field characteristics. In real field, the driver's satisfaction is high in any performance criteria when the waiting time is shorter and the unnecessary stop in front of traffic is smaller. This paper aims to develop simulation model to represent real progression with concurrently considering delays and progression. In order to reflect an effect of level of traffic volumes and residual queues which don't be considered in prior progression model, we apply shockwave model with flow-density diagram. We derive Cell Transmission Model of Daganzo in order to develop the delay index and the progression index for the macroscopic simulation model. In order to validate the effect, we analysis traffic delays and progression efficiency with comparing this model to Transyt-7F and PASSER V.

• Proceedings of the Korean Institute of Intelligent Systems Conference
• /
• 2005.04a
• /
• pp.166-169
• /
• 2005

질적인 속성을 양적인 계열로 전환하여 측정하는 방법으로서 설문의 최소 문항으로서 최대의 효과를 나타내기 위하여 한 항목을 k번 측정하여 평균과 $95\%$ 신뢰구간을 퍼지수로 한 데이터들을 리커트 척도로 활용하여 내분비방법에 의하여 검정을 하였다.

• Stress
• /
• v.26 no.4
• /
• pp.290-295
• /
• 2018

Background: The aim of this study were to investigate the effect of unstable attachment on subjective well-being and to identify mediator effects of decentering and self-compassion. Methods: A total of 255 college students participated in this study by completing the following questionnaires: Experience in Close Relationship Scale, Subjective Well-being Questionnaire, Decentering Scale, and Self-Compassion Scale. Results: Mediated Regression Analysis was used for the purposes of study. The results are as the following. First, unstable attachment had significant negative correlation with subjective well-being and decentering and self-compassion. Second, decentering had a partial meditational effect on the relation between unstable attachment and subjective well-being. Third, self-compassion had completely meditational effect on the relation between unstable attachment and subjective well-being. Conclusions: These results suggested that it is important to enhance students' level of decentering and self-compassion in order to increase their subjective well-being effectively.