• International Journal of Computer Science & Network Security
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• 제23권5호
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• pp.95-108
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• 2023

The technological revolution, also referred to as the Fourth Industrial Revolution, it embraced by government should transform the way governments serve their citizens. The growth of broadband in Africa is leapfrogging its technological development. And thus, many African governments will soon be able to offer quality e-Government services to their citizens. These technologically driven governments will be able to provide decision-makers with timeous information to make judgments that could influence policies. Proponents of e-Government believe that in the digital age, governments can use this information to reduce corruption and increase, accountability, transparency, efficiency, and public participation. e-Government service quality should ensure customer satisfaction. Although many studies have examined the role of e-Government and the quality of its services, few studies have examined the quality of e-Government services in terms of both supply and demand. This paper examines and reviews the academic-state-of-the-art on the factors that affect the quality of e-Government services from both perspectives. Utilizing both qualitative and quantitative methods for data gathering and analysis, a mixed methods research methodology was used.

• 상하수도학회지
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• 제38권1호
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• pp.1-15
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• 2024

Occurrence of process environment changes, such as influent load variances and process condition changes, can reduce treatment efficiency, increasing effluent water quality. In order to prevent exceeding effluent standards, it is necessary to manage effluent water quality based on process operation data including influent and process condition before exceeding occur. Accordingly, the development of the effluent water quality prediction system and the application of technology to wastewater treatment processes are getting attention. Therefore, in this study, through the multi-channel measuring instruments in the bio-reactor and smart multi-item water quality sensors (location in bio-reactor influent/effluent) were installed in The Seonam water recycling center #2 treatment plant series 3, it was collected water quality data centering around COD, T-N. Using the collected data, the artificial intelligence-based effluent quality prediction model was developed, and relative errors were compared with effluent TMS measurement data. Through relative error comparison, the applicability of the artificial intelligence-based effluent water quality prediction model in wastewater treatment process was reviewed.

• 품질경영학회지
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• 제29권1호
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• pp.184-190
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• 2001

Industrial structure is more developed, the economical value of human resources and the cases which risks worker's Health & Safety is expended. The Safety & Health issues are focused on elements of control for management activity simultaneously with work environment as well as the risk elements which risks worker's life and body. The activity for combination of basic management System and Safety & Health management is progressing with active discussion in ILO, BS 8800 is specified the guidance of Occupational Safety & Health Management System in UK. 1996. This research refers to BS 8800:1996, specification as a basic model, and introduce of the result of certification development result in Occupational Safety & Health management System with in ISO 14001 Environmental System Standards & ISO 9001 Quality Management System Standards and Systemic Factors. Through this applicability and efficiency evaluation, we make an effort to support and to improve the specification. Also applicability evaluation of Occupational Safety & Health management System and the specification developed for the purpose of the third party certification is applied with expending in industry, and the method is presented through the case which is required to support for method review and activities.

• 한국환경보건학회지
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• 제23권4호
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• pp.57-66
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• 1997

Successful energy conservation and good indcfor air quality (IAQ) are highly dependent on ventilation system. Air filtration is a primary solution of indoor air control strategies in terms of reducing energy consumption and improving ihdoor air quality. A conventional system with bypass filter, as it is called variable-air-volume/bypass filtration system (VAV/BPFS), is a variation of the conventional variable air volume (VAV) systems, which is designed to eliminate indoor air pollutant and to save energy. Bypass filtration system equipped with a high-efficiency particulate filter and carbon absorbent provides additional cleaned air into indoor environments and maintain good IAQ for human health. The objectives of this research were to compare the relative total decay rate of indoor air pollutant concentrations, and to develop a mathematical model simulating the performance of VAV/BPFS. All experiments were performed in chamber under the controlled conditions. The specific conclusions of this research are: 1. The VAV/BPFS system is more efficient than the VAV system in removing indoor air pollutant concentration. The total decay rates of aerosol, and total volatile organic compound (TVOC) for the VAV/BPFS system were higher than those of the conventional VAV system. 2. IAQ model predictions of each pollutant agree closely with the measured values. 3. According to IAQ model evaluation, reduction of outdoor supply air results in decreased dilution removal rate and on increased bypass filtration removal rate with the VAV/BPFS. As a results, we recommends the VAV/BPFS as an alternative to conventional VAV systems.

• 대한환경공학회지
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• 제30권10호
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• pp.1013-1020
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• 2008

시화호 인공습지의 오염물질 제거효율을 분석평가하고 수질정화기능의 저하원인을 파악하기 위하여 습지내 16개 지점에서 시공간적 수질분포에 대해 조사하였다. TN을 제외한 오염물질 제거효율은 조성 초기에 비해 낮아졌으며, 계절변동 또한 매우 큰 것으로 나타났다. 특히 BOD와 TP의 평균 제거효율이 각각 12.3%, -44.5%로 낮고, TN과 SS에 비해 계절변동이 큰 것으로 나타났다. 월평균 BOD의 제거효율은 습지 하류부에서 식물플랑크톤이 대량 증식하였던 4월과 7월에 처리효율이 나타나지 않았으며, TP의 경우는 4월부터 8월까지 제거효율이 지속적으로 감소하였으며 수온이 가장 높았던 8월에 -291%를 나타냈다. 폐쇄수역에서 SS 농도분포는 좌안과 우안에 비해 중앙지점에서 높은 것으로 나타났다. 또한 ANOVA test로부터 수평적으로 유의적인 차이(p = 0.013, 중앙 > 좌안 > 우안)를 보였다. 시화호 인공습지에서 오염물질 제거효율의 저하원인은 과도한 유기물 생산에 의한 습지의 혐기성환경과 이에 따른 습지 하류부에서 용출된 인과 대량 증식한 식물플랑크톤이 균등하지 못한 물 흐름에 의해 식생대를 거치지 않고 유출되었기 때문으로 유추된다.

• 대한방사선기술학회지:방사선기술과학
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• 제45권2호
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• pp.127-134
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• 2022

In order to overcome the image quality limitations of the conventional C-arm, a flat panel detector (FPD) is used to enhance spatial resolution, detective quantum efficiency, frame rate, and dynamic range. Three-dimensional (3D) visualized information can be obtained from C-arm computed tomography (CT) equipped with an FPD, which can reduce patient discomfort and provide various medical information to health care providers by conducting procedures in the interventional procedure room without moving the patient to the CT scan room. Unlike a conventional C-arm device, a C-arm CT requires different basic safety and essential performance evaluation criteria; therefore, in this study, basic safety and essential performance evaluation criteria to protect patients, medical staff, and radiologists were derived based on International Electrotechnical Commission (IEC) standards, the Ministry of Food and Drug Safety (MFDS) standards in Korea, and the rules on the installation and operation of special medical equipment in Korea. As a result of the study, six basic safety evaluation criteria related to electrical and mechanical radiation safety (leakage current, collision protection, emergency stopping device, overheating, recovery management, and ingress of water or particulate matter into medical electrical (ME) equipment and ME systems: footswitches) and 14 essential performance evaluation criteria (accuracy of tube voltage, accuracy of tube current, accuracy of loading time, accuracy of current time product, reproducibility of radiation output, linearity and consistency in radiography, half layer value in X-ray equipment, focal size and collimator, relationship between X-ray field and image reception area, consistency of light irradiation versus X-ray irradiation, performance of the mechanical device, focal spot to skin distance accuracy, image quality evaluation, and technical characteristic of cone-beam computed tomography) were selected for a total of 20 criteria.

• 인터넷정보학회논문지
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• 제13권1호
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• pp.45-55
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• 2012

임상시험 전체 소요시간 및 비용의 절감, 임상 데이터 질의 향상을 위해 임상시험 전자자료의 관리가 점차 중요해지고 있다. 또한 임상시험 전자자료 관리는 전자 임상시험의 안정성 및 질을 위해 규정 가이드라인을 준수하는 것이 결정적으로 필요하다. 본 연구는 전자적 시스템을 활용한 임상시험에 있어 데이터 관리의 성과를 평가하기 위한 프레임웍을 개발하고자 한다. 연구의 목적을 위해 임상시험 프로세스에 근거하여 기반능력, 연구설계, 연구진행 및 연구완료 등 네 개의 주요 메트릭을 구성함으로써 데이터 관리의 수준을 측정할 수 있는 성과척도를 도출한다. 이때 각 성과척도의 도출 기준은 임상시험 자체가 지향하는 데이터의 질 향상, 전자자료 관리 프로세스의 비용과 효율성 및 규정 준수 수준 등 네 가지의 관리적 관심을 기준으로 하며, 각 성과척도 별로 전자자료 관리 프로세스 상 실질적으로 측정 가능한 측정지표를 제시한다. 평가 프레임웍은 네 가지의 주요 측정 메트릭에 근거하여, 세 개의 데이터 영역(연구기관, 모니터링, 데이터관리센터) 별로 구성된다. 본 평가 프레임웍의 개발은 전문가 의견 수렴을 통한 델파이 방법론으로 접근한 탐색적 연구로서 향후 실증적 후속 연구를 과제로 남기고 있다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2008년도 춘계 학술논문 발표대회
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• pp.111-115
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• 2008

The productivity is the one of the primary elements to evaluate the new systems performance for building construction along with the economic efficiency, the safety, and the quality improvement. At present the on-site construction automation systems(we will call it as Construction Factory or CF hereafter) is under the development by research group for construction automation of high-rise building. The system includes many sub-systems such as a robotic crane, a construction factory, bolting robots, a building material management system using RFID and so on. In this study we discuss and propose the method to evaluate for these hybrid on-site automation system fundamentally. In future we devise a framework of evaluation modules for the on-site building automation system on the basis of this discuss.

• 인터넷정보학회논문지
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• 제22권2호
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• pp.69-75
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• 2021

언택트 시대의 시작으로, 온라인 산업의 성장 속도는 점차 빨라지고 있다. 온라인 산업이 성장할수록, 고객 관리에 대한 중요성은 높아지며, 그 접점에 존재하는 컨택센터 시장 역시 성장하고 있다. 언택트 시대의 주요 서비스 분야인 컨택센터의 업무가 노동 집약적이라는 아이러니를 극복하고 컨택센터 업무 효율을 증가시키기 위한 다양한 업무 자동화 기술 개발 연구들이 활발하게 진행되고 있다. 본 연구는 업무 자체는 정형적이지만, 그 중요성이 높아 업무 자동화의 효율이 높은 대표적인 컨택센터의 업무 중 하나인 품질평가 업무의 자동화 방법을 제안한다. 제안 방법은 채널 분리된 상담 내용 녹취 내용을 토대로, 음성 인식 결과를 획득한 뒤, 문장단위 발화 내용을 분석하여, 정량 평가 항목인 도입부 평가, 응대 중 경청과 침묵 평가, 그리고 마무리 평가를 수행한 후 수행 결과를 평가표에 맞춰 출력하는 단계를 따른다. 제안 방법은 전문가의 평가 결과 대비 92.7% 일치율을 보였다. 불일치 케이스의 경우, 주로 음성 인식의 오류에 기인한 경우였다. 따라서 음성 인식 결과의 신뢰도가 보장된다면, 본 논문에서 제안한 방법을 통해 자동화된 품질평가로 해당 업무 효율을 증대시킬 수 있을 것이다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권1호
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• pp.238-256
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• 2016

Modern web services have been broadly deployed on the Internet. Most of these services use multi-tier architecture for flexible scaling and software reusability. However, managing the performance of multi-tier web services under dynamic and unpredictable workload, and different resource demands in each tier is a critical problem for a service provider. When offering quality of service assurance with least resource usage costs, web service providers should adopt self-adaptive resource provisioning in each tier. Recently, a number of rule- and model-based approaches have been designed for dynamic resource management in virtualized data centers. This survey investigates the challenges of resource provisioning and provides a competing assessment on the existing approaches. After the evaluation of their benefits and drawbacks, the new research direction to improve the efficiency of resource management and recommendations are introduced.