• Title/Summary/Keyword: User assessment

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Study on Developing Assessment Guideline for Safety and Performance of Electric Moxibustion Apparatus (전기식 온구기에 대한 안전성 및 성능 평가 가이드라인 개발 연구)

  • Yi, Seung-Ho;Kang, Jung-Won;Nam, Dong-Woo;Kim, Eun-Jung;Lee, Hye-Jung;Kim, Kap-Sung;Lee, Jae-Dong
    • Journal of Acupuncture Research
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    • v.27 no.1
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    • pp.75-86
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    • 2010
  • Objectives : We developed and proposed a guideline for safety and performance assessment of electric moxibustion apparatus (class II medical device). Methods : We drafted the guideline for safety and performance assessment of electric moxibustion apparatus by referring the existing standards, guidelines and measurement data from commercially available products. Temperature characteristics such as maximum temperature and ramp time, and physical characteristics such as weight, noise and diameter were measured. User friendliness was also evaluated for commercial devices. Results : This guideline only can be applied to the electric moxibustion apparatus where moxa is being heated by electricity for medical proposes. Maximum temperature of higher than $50^{\circ}C$ can be achieved mostly. Ramp rate of temperature seems to be reliable. Control of temperature is needed to be improved. Moxa and its derivative products seem to be regulated for reliable temperature performance for clinical application. Requirements for design and development of electric moxibustion apparatus are suggested : temperature indicator, temperature control and its accuracy, safety measure, surge protection, user friendliness and instruction for use (IFU). Design recommendation of the reduction of noise level and energy loss are suggested for better products. Conclusions : We proposed a guideline for safety and performance assessment of electric moxibustion apparatus to improve the quality of relating products and aid their commercialization by aiming higher industrial competitiveness of the medical device sectors in Korea. Discussion with related institutes such as industry, academy and government is further required. Public hearings also need to be held prior to the establishment of a final guideline and standard.

Development of a Platform to resolve the Mismatch between Job and Competence in Recruitment Market (채용시장 직무와 역량 간 미스매치 해소를 위한 플랫폼 개발)

  • Kim, Jongho
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.12 no.3
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    • pp.11-24
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    • 2016
  • The purpose of this study is to develop a recruiting platform resolving the mismatch between corporate job and job finder's competence in recruitment market. For this, we investigated technological trends and limitation on recruit platform. Based on the findings, this study investigates the trends and directions related to recruiting platform evolution and identified critical success factors and development strategies for successful development of recruiting platform. Two development strategies include employment of online resume and construction of database assessing job finder's competence. We also proposed target system architecture incorporating job database, competency assessment form, capability oriented resume. To analyze user requirement national competency standards and core job capability evaluation model were analyzed. Next, we designed integrated database, user interfaces, and dynamic functionalities using the forms developed in earlier stage. Finally, we assessed the fidelity of form item, integrity of database, and the usability of interface to evaluate the effectiveness of the system.

A Heuristic Method for Channel Allocation and Scheduling in an OFDMA System

  • Hwang, Sung-Ho;Park, Joon-Goo;Jang, Youn-Seon;Cho, Ho-Shin
    • ETRI Journal
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    • v.30 no.5
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    • pp.741-743
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    • 2008
  • In this letter, a heuristic channel allocation and scheduling scheme is proposed. By comparing the size of the alternative-factor assessment, which is obtained by simple calculation, we can easily find the most appropriate channel for each user for overall throughput enhancement. Numerical results show that the downlink throughput of the proposed scheme is higher than that of proportional fairness and is almost the same as that of the maximum C/I scheme, while user fairness remains better than that of the maximum C/I scheme.

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Space Usage and User Needs of Postpartum Care Centers (산후관리시설의 사용실태 및 사용자 요구에 관한 연구)

  • Son Yeo-Rym;Hwang Yeon-Sook
    • Korean Institute of Interior Design Journal
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    • v.14 no.5 s.52
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    • pp.18-25
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    • 2005
  • This study examined the current space usage of postpartum care center and postpartum mother's assessment of postpartum care center. This study was conducted questionnaire web survey. 220 women who used postpartum care center were surveyed. The data were analyzed by using SPSS Program for Win 12.0. Frequency, percentage, mean were used. The major findings were as follows: The postpartum care center was consisted of 5 areas such as living area, sanitary area, public area, service area and administration area. Living and public area were mainly occupied, but service area was insufficient. The users showed high satisfaction with mother room, and low satisfaction with nursing room and shower room. The users complained of size of mother room, collaboration with others in shower room and toilet. The users wanted guest meeting room for users' privacy of living room. The users wanted service area such as massage room, fitness room, physical care roon.

Car-audio Position Evaluation Using 3-Dimensional Motion Analysis (동작분석을 이용한 카 오디오 위치 평가)

  • 임창주;임치환
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.24 no.62
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    • pp.79-87
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    • 2001
  • Usability has become a primary factor in determining the acceptability and consequent success of consumer product. It is common that the product usability is evaluated by objective performance measures and/or subjective user preference measures. This study is concerned with objective evaluation of the product usability using 3-dimensional motion analysis. We evaluated car-audio position using 3-dimensional motion analysis. The parameters investigated in this experiment were height of car-audio, left-right angle, and front-end angle. The experimental results showed that the usability evaluation method using motion analysis was consistent with user's subjective assessment. This objective method can be applied to not only car-audio position evaluation but also various consumer products'usability evaluation.

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Assessment and Validation of the Reliability of Quality Measurement System for Wireless Data Services (무선데이터 서비스 품질 측정 시스템의 신뢰성 검증 및 평가)

  • Choi, Dong-Hwan;Park, Seok-Cheon
    • Journal of Information Technology Services
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    • v.11 no.1
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    • pp.239-246
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    • 2012
  • The user increases around the WiBro and in which the mobile broad band service is the wireless internet base technology HSDPA, that is the cellular phone foundation technique, and moreover the issue about the user effective quality guarantee emerges but the quality control of the wireless network is the incomplete actual condition. Therefore, the reliability verification according to the development of the system for the performance measure for the continued wireless data service and it and evaluation are needed for the quality control. In this paper, the wireless data service quality measurement system was implemented with the design. The same test environment as the existing network performance measurement program was built for the reliability verification of the embodied device for measuring quality and evaluation and the cost performance was performed. It could confirm that design and embodied wireless data service quality measurement system operated accurately in this paper through the quality measure result value analysis.

Water-Quality Analysis for Gokgyo Stream in Chonan Asan Region and Pollution Source Control Strategy Using GIS (천안/아산권역내 곡교천의 수질분석 및 지리정보체계를 이용한 유역 오염원 관리방안에 관한 연구)

  • 황병기;이상호
    • Journal of Environmental Science International
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    • v.9 no.6
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    • pp.443-447
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    • 2000
  • Chonan and Asan city have been a focal point due to rapid development as the first station for Express Railroad and key cities West Coast Development Region. Gokgyo stream adjacent to the cities plays an important role as a drainage channel for an agriculture and a discharger of urban storm water. Waster quality of the stream has been deteriorating caused by pollution sources such as a untreated wastewater discharge and runoff from the watershed. In the study, we conducted 4 surveys in April, May, July, and September to understand the current state of water quality for the stream and to make it possibe to predict future water-quality variation for future development. The system runs on a personal computer under the windows enviroment and provides extensive graphic user interface(GUI) for user-friendly assessment. Using the pull-down menus provided by the GUI panel, the user is able to operate the system by pointing and clicking the icon to identify the state of water-quality at locations concerned. Furthermore, we developed an integrated watershed management system. The constructed system could be a useful tool as a decesion maker for pollution source control strategy.

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The Fundamental Study for the Development of Labeling System (레이블링 시스템 개발을 위한 기초 연구)

  • Park, Sang-Jin
    • Proceedings of the Korea Contents Association Conference
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    • 2006.05a
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    • pp.475-478
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    • 2006
  • The most important issue for developing web site recently is about the usage. This is the disproof that the participation of the user increased as the subject of active communication, and it means that we must convert into the perspective what does the user want to see rather than the agony what to show for the position of the site operator or developer. We must activate systematic study about the labeling system with the information systemization to improve satisfaction about the site of the user who is the subject of communication. By this, this study is to suggest a checklist that can be used as the checking list in development and assessment stages to complete the successful labeling system and is to discuss about its necessity.

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A Solution to Privacy Preservation in Publishing Human Trajectories

  • Li, Xianming;Sun, Guangzhong
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.14 no.8
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    • pp.3328-3349
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    • 2020
  • With rapid development of ubiquitous computing and location-based services (LBSs), human trajectory data and associated activities are increasingly easily recorded. Inappropriately publishing trajectory data may leak users' privacy. Therefore, we study publishing trajectory data while preserving privacy, denoted privacy-preserving activity trajectories publishing (PPATP). We propose S-PPATP to solve this problem. S-PPATP comprises three steps: modeling, algorithm design and algorithm adjustment. During modeling, two user models describe users' behaviors: one based on a Markov chain and the other based on the hidden Markov model. We assume a potential adversary who intends to infer users' privacy, defined as a set of sensitive information. An adversary model is then proposed to define the adversary's background knowledge and inference method. Additionally, privacy requirements and a data quality metric are defined for assessment. During algorithm design, we propose two publishing algorithms corresponding to the user models and prove that both algorithms satisfy the privacy requirement. Then, we perform a comparative analysis on utility, efficiency and speedup techniques. Finally, we evaluate our algorithms through experiments on several datasets. The experiment results verify that our proposed algorithms preserve users' privay. We also test utility and discuss the privacy-utility tradeoff that real-world data publishers may face.

High Quality Network and Device Aware Multimedia Content Delivery for Mobile Cloud

  • Saleem, Muhammad;Saleem, Yasir
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.13 no.10
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    • pp.4886-4907
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    • 2019
  • The use of mobile devices is increasing in multimedia applications. The multimedia contents are delivered to mobile users over heterogeneous networks. Due to fluctuation in bandwidth and user mobility, the service providers are facing difficulties in providing Quality of Service (QoS) guaranteed delivery for multimedia applications. Multimedia applications depend on QoS parameters such as delay, bandwidth, and jitter to offer better user experience. The existing schemes use the single source and multisource delivery but are unable to balance between stream quality and network congestion for mobile users. We proposed a Quality Oriented Multimedia Content Delivery Scheme (QOMCDS) for the mobile cloud to deliver better quality multimedia contents for the mobile user. The multimedia contents are delivered to the mobile device based on the device's parameters and network environment. The objective video quality assessment models like Peak Signal-to-Noise Ratio (PSNR), Structural Similarity (SSIM), and Video Quality Measurement (VQM) are used to measure the quality of the video. The client side Quality of Experience metric such as Startup delay, Rebuffering events, and Bitrate switch count was used for evaluation. The proposed scheme is evaluated using dash.js and is compared to existing schemes. The results show significant improvement over existing multimedia content delivery schemes.