• Advances in Computational Design
• /
• 제9권3호
• /
• pp.187-211
• /
• 2024

WiFi sensing integration enables non-intrusive and is utilized in applications like Human Activity Recognition (HAR) to leverage Multiple Input Multiple Output (MIMO) systems and Channel State Information (CSI) data for accurate signal monitoring in different fields, such as smart environments. The complexity of extracting relevant features from CSI data poses computational bottlenecks, hindering real-time recognition and limiting deployment on resource-constrained devices. The existing methods sacrifice accuracy for computational efficiency or vice versa, compromising the reliability of activity recognition within pervasive environments. The lightweight Compact Convolutional Transformer (CCT) algorithm proposed in this work offers a solution by streamlining the process of leveraging CSI data for activity recognition in such complex data. By leveraging the strengths of both CNNs and transformer models, the CCT algorithm achieves state-of-the-art accuracy on various benchmarks, emphasizing its excellence over traditional algorithms. The model matches convolutional networks' computational efficiency with transformers' modeling capabilities. The evaluation process of the proposed model utilizes self-collected dataset for CSI WiFi signals with few daily activities. The results demonstrate the improvement achieved by using CCT in real-time activity recognition, as well as the ability to operate on devices and networks with limited computational resources.

• 자원ㆍ환경경제연구
• /
• 제24권3호
• /
• pp.463-488
• /
• 2015

본 연구에서는 2015년부터 시행된 온실가스 배출권 거래제도에 맞추어 상쇄(offset)제도의 구체적인 설계가 필요한 시점에서, 가정부문의 고효율 전자기기의 보급을 통해 확보할 수 있는 잠재 상쇄 공급량을 추정하였다. 분석대상 품목은 TV, 세탁기, 선풍기, 냉장고, 에어컨 등 다섯 가지 가전기기이며, 자기회귀시차분포모형(ARDL)을 통해 2016년부터 2022년까지의 고효율 가전기기의 보급대수를 추정하고, 효율 개선을 통한 전기 절감량과 이에 따른 탄소 환산율을 통해 최종적으로 잠재 상쇄 공급량을 도출하였다. 고효율 가전기기의 에너지 절감률을 각각 10%와 20%로 가정했을 때 2022년에 누적된 탄소 저감량은 $361,899CO_2t$과 $723,797CO_2t$으로 나타났으며, 에너지 절감량이 큰 순서로는 에어컨, 냉장고, TV, 세탁기, 선풍기 순으로 나타났다. 또한 에너지 소비효율 1등급 가전기기의 에너지 절감률이 20%라고 가정했을 때, 누적 탄소 저감량이 2015년에 비해 2022년에 약 316% 증가하는 것으로 나타났다.

• KIEAE Journal
• /
• 제12권5호
• /
• pp.11-20
• /
• 2012

In this paper, we analyze the existing ecovillages in order to establish a planned-ecovillage model to suggest improvement in direction of ecovillage planning; namely, efficiency of planning elements through analysis of changes in ecovillages. Changes to living environment require increased relaxation and convenience to ensure quality of life. Unlike general ecovillages, planned-ecovillages differ in their introduction of planning elements by autonomous decision-making through discussions and meetings among residents. In the village planning process, complex planning, community facilities, ecology-base facilities, water-resource utilization, and waste disposal can waver from initial planning, giving rise to realistic alternatives to village characteristics for those considering changes to space organization.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2004년도 ICCAS
• /
• pp.960-964
• /
• 2004

During system resource improvement process that based on Object-Oriented technology could be affect to the continuous system performance if lack appropriate management and control objects mechanism. This paper proposes a methodology to support continuous system performance and its stability. The adoption is based on Java Container Framework and Collections Framework for object collection. Also includes Software Engineering, Object Migration and Multiple Class Loaders mechanism accommodate to construct Continuous Migration Container (CMC). CMC is a runtime environment provides interfaces for management and control to support upgrading object process. Upgrade object methodology of CMC can be divided into two phase are object equivalence checking and object migration process. Object equivalence checking include object behavior verification and functional conformance verification before object migration process. In addition, CMC use Multiple Class Loaders mechanism to support reload effected classes instead of state transfer in migration process while upgrading object. These operations are crucial for system stability and enhancement efficiency.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2011년도 제42회 하계학술대회
• /
• pp.679-680
• /
• 2011

This paper is developed to Energy Balance Flow show the flow of total energy resource be used nationally. The Energy Balance Flow is applicable of demand management factor through the analysis of foreign energy model of supply and demand and energy statistic data in the country. This study is based on and developed to Energy system management model is able to appraisal efficient of energy cost cutting, CO2 emission reduction and Energy saving at the national level calculated effect reached amount of primary energy to change of energy flow followed application of demand side management factor is able to appraisal quantitatively at the total energy to model of demand and supply.

• 한국산학기술학회논문지
• /
• 제15권11호
• /
• pp.6815-6820
• /
• 2014

유비쿼터스 활성화에 따른 RFID/USN 환경조성은 매우 빠르게 증가되고 있다. 그러나 RFID/USN 환경에 적합한 보안환경은 보안위협 증가속도에 따르지 못하는 것이 현 실정이다. 그러므로 본 논문은 RFID/USN에 적합한 MSNR을 제안하였다. 제안된 MSNR은 기존 AES에 비하여 1.3배의 처리율 증가를 보였으며, 전체적인 시스템 효율면에서 2배의 성능향상을 보임을 확인하였다. 그러므로 MSNR은 RFID/USN 등과 같은 환경적 자원제약 조건을 극복하기에 적합한 암호알고리즘으로 사료된다.

• 농촌지도와개발
• /
• 제15권2호
• /
• pp.325-338
• /
• 2008

The objective of this study was to develop the strategies for enhancing activities of the "Korean Rural Leaders' Association" to foster the voluntary leadership in rural area. Literature review and questionnaire survey were carried out. The results of the study were as follows: Firstly, for enhancing the organizational competency, it was regarded as the important components that developing an organizational vision, improvement of structure and functions, promotion of the organizational management efficiency including human resource, securing new members and establishment of organizational culture. And secondly, for accelerating the organizational activities, it was expected to give more concern to such activities as public services, spokesman's role for the farmers, organizational / international cooperations and research at central level of the association.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2011년도 춘계학술대회
• /
• pp.743-745
• /
• 2011

현재 RFID 기술을 이용한 항만의 관리 시스템은 점차 그 분야를 확대해가고 있다. 기존의 센서 기술이 물적 자원을 관리하기 위한 용도였다면, 이제는 인원관리를 위한 분야로 확대되고 있다. 이에 본 논문은 항만 내 작업인원에 대하여 여러 대역의 RFID 태그와 다양한 디자인의 태그를 소지하게 하여, RFID 리더를 통해 위치 정보를 수집하여 모니터링 하고 그 특성을 조사 분석하였다.

• Asian Journal of Business Environment
• /
• 제5권2호
• /
• pp.31-36
• /
• 2015

Purpose - This work aims to study the existing management process and methods of statistical evaluation of personnel mobility management, and propose improvement measures. This is particularly relevant in today's market economy because proper organization of personnel movement affects the availability and effective utilization of human resources in enterprises. Hence, it influences the volume, timely execution of work, equipment efficiency, and consequently the volume of production, its cost, profit, and other economic indicators. Research design, data, and methodology - We investigate the indicators that measure staff mobility, and their dependent consequences. Further, it analyses the factors influencing high staff turnover, which is a main indicator of staff mobility. Results - Measures for staff mobility development and prevention of turnover are proposed. Micom Systems is a sample case that has developed special programs to reduce staff turnover. Conclusions - Staff mobility leads to additional costs, significant loss of working time, and increase in defects. However, the advantages of staff mobility outweigh these negative factors. The role of staff mobility in a market economy cannot be overestimated.

• 한국IT서비스학회지
• /
• 제8권3호
• /
• pp.185-195
• /
• 2009

Hardware sizing is determinated by an increasing rate of operated business and characteristic of adapted technology which are imported systems. Because it is very difficult for intuitive decision of hardware sizing's appropriateness. But in sprite of difficulty, for maximizing the utilization of information resource and the effect of information investment in public sector are need to correctness hardware sizing. In this paper, we proposed hardware sizing method for OLTP server that is make up It's faults of proper proposal method. Our study certainly will act as a catalyst for higher investment-efficiency of future information systems in public sector.