• Title/Summary/Keyword: Software Quality-in-use

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Analysis of Educational System and Workforce Development Needs for Urban Air Mobility in Daegu-Gyeongbuk (대구경북지역 도심항공교통의 교육 체계 및 인력 양성 수요에 대한 분석)

  • Wooram Lee
    • The Journal of the Convergence on Culture Technology
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    • v.10 no.4
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    • pp.701-710
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    • 2024
  • This study conducted a survey of companies in the aviation, drone, and Urban Air Mobility (UAM) sectors to analyze the educational and workforce needs, identifying essential competencies and technical training required. The study also proposed potential areas for collaboration between universities and industry regarding educational methods. Key findings and implications of the survey were derived. The results indicated that the most critical consideration for hiring was job-specific skills in the respective field. The most essential quality for workforce training was identified as enhancing the ability to use various equipment and software related to the major field. In the UAM sector, there was a high demand for personnel and education related to aircraft and components, with the highest demand being for lightweight manufacturing technology for aircraft. This study can serve as foundational data for addressing the educational needs in this field.

Cloud Service Evaluation Techniques Using User Feedback based on Sentiment Analysis (감정 분석 기반의 사용자 피드백을 이용한 클라우드 서비스 평가 기법)

  • Yun, Donggyu;Kim, Ungsoo;Park, Joonseok;Yeom, Keunhyuk
    • Journal of Software Engineering Society
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    • v.27 no.1
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    • pp.8-14
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    • 2018
  • As cloud computing has emerged as a hot trend in the IT industry, various types of cloud services have emerged. In addition, cloud service broker (CSB) technology has emerged to alleviate the complexity of the process of selecting the desired service that user wants among the various cloud services. One of the key features of the CSB is to recommend the best cloud services to users. In general, CSB can use a method to evaluate a service by receiving feedback about a service from users in order to recommend a cloud service. However, since each user has different criteria for giving a rating, there is a problem that reliability of service evaluation can be low when the rating is only used. In this paper, a method is proposed to supplement evaluation of rating based service by applying machine learning based sentiment analysis to cloud service user's review. In addition, the CSB prototype is implemented based on proposed method. Further, the results of comparing the performance of various learning algorithms is proposed that can be used for sentiment analysis through experiments using actual cloud service review as learning data. The proposed service evaluation method complements the disadvantages of the existing rating-based service evaluation and can reflect the service quality in terms of user experience.

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Development of DVD Player Design for the Film Generation (영상세대를 위한 DVD 플레이어 디자인 개발)

  • Ryoo, Ga-Yong
    • The Journal of the Korea Contents Association
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    • v.9 no.11
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    • pp.120-129
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    • 2009
  • It is now the digital and multi-media era. The DVD market is growing constantly. So is the capacity and quality of DVD players, In our research, we focused on the younger generation, who are now the greatest consumers. The results helped signify the most distinctive and popularized DVD player designs that satisfy young people's entertainment needs. Our new design is a large step ahead of older ones. Previous designs were uniform and standard. This new design has distinctive features and is uniquely user-friendly. It is focused primarily on easy usability. The interface is simple and straight forward. The user can use the system easily before consulting a manual. It is consistent in internal and external software and hardware, allowing the user to easily adapt to the product. DVD players have become a necessity in the current multi-media/digital era. So products need to be geared towards being available to not just those who are technologically savvy, but also those who rely on basic user-intuition. Our design takes into account these conditions, based on our statistical research, allowing us to expect our product to be a competitive force in the DVD market.

Fast Mode Decision using Global Disparity Vector for Multi-view Video Coding (다시점 영상 부호화에서 전역 변이 벡터를 이용한 고속 모드 결정)

  • Han, Dong-Hoon;Cho, Suk-Hee;Hur, Nam-Ho;Lee, Yung-Lyul
    • Journal of Broadcast Engineering
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    • v.13 no.3
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    • pp.328-338
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    • 2008
  • Multi-view video coding (MVC) based on H.264/AVC encodes multiple views efficiently by using a prediction scheme that exploits inter-view correlation among multiple views. However, with the increase of the number of views and use of inter-view prediction among views, total encoding time will be increased in multiview video coding. In this paper, we propose a fast mode decision using both MB(Macroblock)-based region segmentation information corresponding to each view in multiple views and global disparity vector among views in order to reduce encoding time. The proposed method achieves on average 40% reduction of total encoding time with the objective video quality degradation of about 0.04 dB peak signal-to-noise ratio (PSNR) by using joint multi-view video model (JMVM) 4.0 that is the reference software of the multiview video coding standard.

Community Vitality of Learning City through the use of Unused Facilities in the Elementary School - Focused on Busan - (유휴시설 활용을 통한 학습도시형 커뮤니티 활성화 연구 - 부산광역시를 대상으로 -)

  • Park, Jong Min;Kim, Jong Gu;Kang, Youn Won
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.38 no.1
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    • pp.141-148
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    • 2018
  • In recent years, there has been a movement to create a learning city where people can learn and enjoy what they want whenever, wherever, and whenever, so that the self-realization of individuals and the quality of life can be enhanced to improve the competitiveness of the city as a whole, It is becoming active. Many developed countries in the world are supporting projects to build learning cities by utilizing schools and public facilities, thereby providing local residents with opportunities for self-growth and solving community problems. In Korea, too, there are various programs using idle facilities. However, there is a lack of education programs for local residents and learning programs by partnership with local communities. It is when spatial and software strategies are needed to build a successful learning city. Therefore, we want to systematically organize the spatial data of the facilities that can be learned, analyze the current problems, and explore various ways to utilize them. We also analyze the programs that residents need to implement real and efficient learning cities.

The Satisfaction of Store Characteristics Depending on On-Line Store Type (온라인 의류 점포 유형에 따른 점포속성 만족도)

  • Kim, Eun-Sook;Kim, Mi-Young
    • Journal of the Korean Society of Costume
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    • v.57 no.7
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    • pp.1-14
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    • 2007
  • This study investigates the differences between the satisfaction factors of store characteristics depending on on-line clothing store type and its satisfaction index. The collected data were analyzed by using SPSS 10.0 software with various techniques such as paired t-test, T-test, Cronbach's ${\alpha}$ reliability and factor analysis that use principal component analysis and Varimax orthogonal rotation were used. The results are summarized as follows: 1. By categorizing the level of on-line store characteristics satisfaction depending on its type, clarifies the differences between its satisfaction. The satisfaction rank of general merchandise store was as followed: searching and approaching system, buying process service, screen-displayed design, product, store credit. On the other hand, the satisfaction rank of general store was as followed: screen-displayed design, store credit, buying process service. 2. By analyzing the difference of satisfaction depending on the store type, it was found that general merchandise store was more satisfied with screen-displayed design, approaching and searching, whole payment process, the safety of payment and shipping service, security service when compared to specialty store. It was also found that specialty store was more satisfied with the variety of product, update of rare items, quality and price of product. 3. By analyzing the difference between the type of on-line clothing store satisfaction depending on age, in the case of general merchandise store, the result showed that people in their thirties were more satisfied with buying process service, store credit, customer management system when compared to twenties. In the case of specialty store, the result showed that people in their twenties were more satisfied with customer management service when compared to thirties, and when it came to buying process service, it was vice versa.

SW Education Program using Pair Programming Collaboration Tools (짝프로그래밍 협업도구를 활용한 SW교육프로그램)

  • Kim, Yong-Ok;Chun, Seok-Ju
    • Journal of The Korean Association of Information Education
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    • v.23 no.4
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    • pp.375-384
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    • 2019
  • In a rapidly changing society with the Fourth Industrial Revolution, future students should have the skills to utilize and organize high-quality knowledge, not the amount of knowledge. With the launch of the revised curriculum in 2015, the curriculum has been reorganized based on competency and the software education has been seeking capabilities such as 'Cultural computing knowledge', 'Computational thinking', and 'Collaborative problem solving skills'. Therefore, practical collaboration tools and education programs that can be used in the field of education are developed based on Pair Programming, which is a specific collaborative learning strategy to develop cooperative problem solving skill. The educational program using this collaboration tool was developed with a focus on developing computational thinking and collaborative problem solving skills through Pair Programming rather than focusing on learning grammar of programming language and programming techniques. In a educational program, students will be able to use collaborative tools for pair programming and foster collaborative problem-solving skills.

Social Workers's View Regarding the Concept of Welfare Technology and Its Application (사회복지사의 복지테크놀로지 개념 인식과 적용 사례)

  • Park, Dong-Jin;Kim, Hae Sung;Choi, Hee-Chul;Choi, Kwon-Taeg
    • Journal of Digital Convergence
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    • v.19 no.3
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    • pp.387-399
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    • 2021
  • Welfare countries are making various attempts to actively use science and technology for social welfare, in this context, welfare technology can be used to improve the quality of life for not only the elderly and the disabled. The purpose of this study is to examine how social workers perceive welfare technology, how welfare technology can be applied to the social welfare field, and what future prospects are. In January, 2018, a focus group interview was conducted on 13 social workers of social welfare centers in Seoul and Gyeonggi provincial. Data were collected and thematic analysis was conducted. As a result of this study, four categories and twelve sub-categories and 24 concepts were derived, namely, 'concept of welfare technology', 'necessity of welfare technology', 'utilization of welfare technology' and 'future prospect of welfare technology'. Based on the results of this study, I discussed and suggested for the development and activation of welfare technology in social welfare field.

A Survey of Application Layer Protocols of Internet of Things

  • bibi, Nawab;Iqbal, Faiza;Akhtar, Salwa Muhammad;Anwar, Rabia;bibi, Shamshad
    • International Journal of Computer Science & Network Security
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    • v.21 no.11
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    • pp.301-311
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    • 2021
  • The technological advancements of the last two decades directed the era of the Internet of Things (IoT). IoT enables billions of devices to connect through the internet and share their information and resources on a global level. These devices can be anything, from smartphones to embedded sensors. The main purpose of IoT is to make devices capable of achieving the desired goal with minimal to no human intervention. Although it hascome as a social and economic blessing, it still brought forward many security risks. This paper focuses on providing a survey of the most commonly used application layer protocols in the IoT domain, namely, Constrained Application Protocol (CoAP), Message Queuing Telemetry Transport (MQTT), Advanced Message Queuing Protocol (AMQP), and Extensible Messaging and Presence Protocol (XMPP). MQTT, AMQP, and XMPP use TCP for device-to-device communication, while CoAP utilizes UDP to achieve this purpose. MQTT and AMQP are based on a publish/subscribe model, CoAP uses the request/reply model for its structuring. In addition to this, the quality of service provision of MQTT, AMQP, and CoAP is not very high, especially when the deliverance of messages is concerned. The selection of protocols for each application is very a tedious task.This survey discusses the architectures, advantages, disadvantages, and applications of each of these protocols. The main contribution of this work is to describe each of the aforementioned application protocols in detail as well as providing their thorough comparative analysis. This survey will be helpful to the developers in selecting the protocol ideal for their system and/or application.

A Review of the Application of Constructed Wetlands as Stormwater Treatment Systems

  • Reyes, Nash Jett;Geronimo, Franz Kevin;Guerra, Heidi;Jeon, Minsu;Kim, Lee-Hyung
    • Proceedings of the Korea Water Resources Association Conference
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    • 2022.05a
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    • pp.162-162
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    • 2022
  • Stormwater management is an essential component of land-use planning and development. Due to the additional challenges posed by climate change and urbanization, various stormwater management schemes have been developed to limit flood damages and ease water quality concerns. Nature-based solutions (NBS) are increasingly used as cost-effective measures to manage stormwater runoff from various land uses. Specifically, constructed wetlands were already considered as socially acceptable green stormwater infrastructures that are widely used in different countries. There is a large collection of published literature regarding the effectiveness or efficiency of constructed wetlands in treating stormwater runoff; however, metadata analyses using bibliographic information are very limited or seldomly explored. This study was conducted to determine the trends of publication regarding stormwater treatment wetlands using a bibliometric analysis approach. Moreover, the research productivity of various countries, authors, and institutions were also identified in the study. The Web of Science (WoS) database was utilized to retrieve bibliographic information. The keywords ("constructed wetland*" OR "treatment wetland*" OR "engineered wetland*" OR "artificial wetland*") AND ("stormwater*" or "storm water*") were used to retrieve pertinent information on stormwater treatment wetlands-related publication from 1990 up to 2021. The network map of keyword co-occurrence map was generated through the VOSviewer software and the contingency matrices were obtained using the Cortext platform (www.cortext.net). The results obtained from this inquiry revealed the areas of research that have been adequately explored by past studies. Furthermore, the extensive collection of published scientific literature enabled the identification of existing knowledge gaps in the field of stormwater treatment wetlands.

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