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Erlang Capacity for the Reverse Link of a IS-95 Cellular System According to Approximation Method in Shadowing Channel (전파음영 채널에서 근사방법에 따른 IS-95 셀룰라 시스템의 역방향 링크에 대한 얼랑 용량)

  • Park, Young;Kim, Hang-Rae
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.10
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    • pp.3210-3218
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    • 2000
  • In a IS-95 cellular systm, blocking will occur when the reverse link user interference power reaches a predepermmed level which is set to maintam acceptable signal quality. In this paper, it is assumed that a mobile rdio channel is a shadowing channel and Erlang capacity is calculated for the reverse limk of an imperfect power controlled IS-95 cellular system. the blocking probability is derived using lognornal pproximation and the results according to guassian and lognormal approximation method are compared and analyzed respcctively. Assuming that blocking probability is 1% at the data rate of $R_b$=9.6kbps and $R_b$=14.4kbps, it is shown that Erlang capacity using Iognormal approximation is 13.68 Erlang and 7.08 Erlang and then the approximation erroris occurred about 24.4% and 40.4% inthe garssian approximation, respectively. It is also observed that if the power control becomes periect, the Erlang capacity is increased more 6.99 and 4.21 Erlang than that of the imperfect power control that the power contrl error is 2.5dB, and if voice activity is considered as 10%, the Erlang capacity is increased more 8.21 and 1.25 Erlang than that using non voice activity, respectively.

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Real-time emotion recognition technology using individualization processemotional technology (개인화 프로세스를 적용한 실시간 감성인식 기술)

  • Ahn, Sang-Min;Whang, Min-Cheol;Kim, Dong-Keun;Kim, Jong-Hwa;Park, Sang-In
    • Science of Emotion and Sensibility
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    • v.15 no.1
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    • pp.133-140
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    • 2012
  • We designed a novel individualization process for improving personal emotion recognitions in real time. The designed individualization process was performed by a neutralization algorithm of physiological signals, a subjective emotion reflection of a user updated by personal emotion rules in real time. The physiological signals such as PPG(Photoplethysmography), GSR(Galvanic skin reflex), and SKT(Skin temperature) were measured and analyzed to estimate an emotion states of users. Regulating the emotion status using by emotion rules was performed by reflecting subjective evaluations. The agreement of emotion recognition between of individualization and non-individualization method was estimated by 10 undergraduates (5 females, mean age: $22.1{\pm}2.2$) of Sangmyung University. During the emotion recognition test, 45 images were randomly presented to each participant five times. In results, the proposed individualization process showed the agreement of 71.67 % which was five times higher than when the process was not applied. Therefore, in this study, we demonstrated that the individualization process was significantly useful for customizing emotion recognitions of personal users in real time. The individualization process will be able to improve satisfactions in various emotion related applications and services in the nearer future.

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A Study on the Structuring of Professional System for Design Business (전문적 체계정립을 위한 디자인비즈니스 유형구조화 연구)

  • 김보영
    • Archives of design research
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    • v.17 no.3
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    • pp.17-26
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    • 2004
  • Those of the growth of e-business, the development of the cultural creative industry, the contents and knowledge industry have expanded and diversified the existing business models and created new ones. They are triggering new interpretations and discussions on business models. Such of changing business environment has paved the way for the expansion of design management within the design industry and opened new windows of opportunity for the traditionally small and non-specialized design business. Until now, the design business has not been distinguished from design industry or design service, and has not been viewed as an independent field. Rather, the design business has merely been part of a process. As such, the lack of dear definition and structured system had been a bottleneck for many design companies trying to achieve capital and social success and establish the foundation for growth and for companies striving to advance the design management in developing design business models or growth strategy in line with the changing environment. Against these sort of backdrops, this paper attempts to dearly define the design business. To this end, the paper tries to developed a design business model framework which classifies design business model into four types - customized, ready-made, provider and contract - according to the business activities between the producer and the end user, and business items into product, additional sonics, knowledge and promotion. The framework will expand the definition of design business and contribute to the expansion of design business activities and the development of diverse business models.

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Analysis of the key Factors that Influence Emotional Web Design and its Effects on Brand Attitude - focus on Fastfood WebSites - (웹에서의 감성디자인이 브랜드태도에 미치는 효과와 영향요인 분석 - 패스트푸드 사이트를 중심으로 -)

  • 윤다연;이현주
    • Archives of design research
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    • v.17 no.1
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    • pp.153-162
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    • 2004
  • This paper focused on the effect of Kansei design on the web in branding as well as its influence factors. As a key of this research, it classified web users' Kansei into five categories; 1) functional Kansei, 2) sensoryKansei, 3) psychological Kansei, 4) relational Kansei and 5) cultural Kansei, and organized relevant factors. Online surveys were conducted on seven websites of the fast food brands in Korea (Lotteria, Mcdonald, BurgerKing, Popeyes, KFC, Pizza Hut, Domino's) which are targeting 463 male and females in 20s. As a result, an average of 58% responded that they had a positive Kansei experience and could enhanceits brand preference. Of the sensory Kansei, visual design factors were the one that gave the greatest effect on brand preference enhancement. Regarding the functional Kansei satisfaction, such as user convenience and access speed were also one of the most crucial variables for the whole Kansei satisfaction. Moreover, the preference enhancement brought not only a positive effect on its reliability but also its brand image and consumers' purchasing desire. Based on the survey results, the additional FGI (Focus Group Interview) had been conducted and determined \circled1 what kind of major Kansei that users wanted to have satisfied, \circled2 what type of design can give strong Kansei appeal to its users, and \circled3what design factors gave an effect on sensory emotion. In the course of this research, Itried to renew the awareness of the web importance as a major channel in non-mass interactive marketing, and suggest the effect and its possibility of emotional branding through Kansei design in the web as well as design principles of strategic Kansei design.

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An Adaptive Business Process Mining Algorithm based on Modified FP-Tree (변형된 FP-트리 기반의 적응형 비즈니스 프로세스 마이닝 알고리즘)

  • Kim, Gun-Woo;Lee, Seung-Hoon;Kim, Jae-Hyung;Seo, Hye-Myung;Son, Jin-Hyun
    • Journal of KIISE:Computing Practices and Letters
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    • v.16 no.3
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    • pp.301-315
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    • 2010
  • Recently, competition between companies has intensified and so has the necessity of creating a new business value inventions has increased. A numbers of Business organizations are beginning to realize the importance of business process management. Processes however can often not go the way they were initially designed or non-efficient performance process model could be designed. This can be due to a lack of cooperation and understanding between business analysts and system developers. To solve this problem, business process mining which can be used as the basis of the business process re-engineering has been recognized to an important concept. Current process mining research has only focused their attention on extracting workflow-based process model from competed process logs. Thus there have a limitations in expressing various forms of business processes. The disadvantage in this method is process discovering time and log scanning time in itself take a considerable amount of time. This is due to the re-scanning of the process logs with each new update. In this paper, we will presents a modified FP-Tree algorithm for FP-Tree based business processes, which are used for association analysis in data mining. Our modified algorithm supports the discovery of the appropriate level of process model according to the user's need without re-scanning the entire process logs during updated.

An Efficient SVC Transmission Method in an If Network (IP 네트워크 전송에 적합한 효율적인 SVC 전송 기법)

  • Lee, Suk-Han;Kim, Hyun-Pil;Jeong, Ha-Young;Lee, Yong-Surk
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.34 no.4B
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    • pp.368-376
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    • 2009
  • Over recent years, the development of multimedia devices has meant that a wider multimedia streaming service can be supported, and there are now many ways in which TV channels can communicate with different terminals. Generally, scalable video streaming is known to provide more efficient channel capacity than simulcast video streaming. Simulcast video streaming requires a large network bandwidth for all resolutions, but scalable video streaming needs only one flow for all resolutions. On the contrary, to preserve the same video quality, SVC(Sealable Video Coding) needs a higher bit-rate than AVC(non-layered Video Coding) due to the coding penalty($10%{\sim}30%$). In previous research, scalable video streaming has been compared with simulcast video streaming for network channel capacity, in two-user simulation environments. The simulation results show that the channel capacity of SVC is $16{\sim}20%$ smaller than AVC, but scalable video streaming is not efficient because of the limit of the present network framework. In this paper, we propose a new network framework with a new router using EDE(Extraction Decision Engine) and SVC Extractor to improve network performance. In addition, we compare the SVC environment in the proposed framework with previous research on the same way subject. The proposed network framework shows a channel capacity 50%(maximum) lower than that found in previous research studies.

Factors Influencing on the Turnover Intention of Female Care Workers (돌봄 여성 노동자의 노동특성이 이직의사에 미치는 영향)

  • Kim, Min-Ju;Kim, Nam-Sook
    • Korean Journal of Family Social Work
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    • no.43
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    • pp.37-59
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    • 2014
  • The purpose of this study is to analyze and find the relative importance of the factors impacting on the intent to leave among the female care worker's the labor properties, Total 540 questionnaire were distributed and collected from 387 female care workers working at the area of Daegu and GyeongBuk. The logistic regression analysis was used to analyze the relative importance among the factors. The results of the study are the followings: Academic ability, lower subjective-evaluation of remuneration, non-business contracts, labor intensity, the relationship between the user, the relationship between the agency providing are factors influencing on the turnover intention. In other words, higher education, lower subjective-evaluation of remuneration, more work than the contract, higher labor intensity, the female care workers have higher probability of turnover intention. Based on the results of the study, this paper suggests some implications as policy and practice.

An Empirical Analysis on the Demand for Households with Disabilities (장애인 가구 주택수요 특성에 관한 실증 분석)

  • Go, Ha Hee;Hong, Jea Sung;Shim, Gyo Eon;Kim, Seong Hee
    • Korea Real Estate Review
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    • v.27 no.4
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    • pp.35-50
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    • 2017
  • The Korean society is currently at the level of discussing the living environment and the housing welfare as factors for improving the quality of life, in addition to most individuals or households residing in a living environment and housing welfare, according to industrialization and urbanization. However, even though the overall housing welfare of Korea has improved, the number of households with disabilities belonging to the social special class is not as high as that of the non-disabled households. It is a reality that cannot be done. Therefore, this study aims to identify the present condition and demand characteristics of the housing for disabled people whose social importance is currently emphasized among the social special people who can be called the social special class, as well as present the housing welfare policy to them and explain the purpose of the improvement plan. In this study, 4,277 out of 8,004 households with disabilities surveyed by the Ministry of Land, Infrastructure, and Transport in 2015 were analyzed. The result of the analysis showed that the economic characteristics (permanent income indicating the income and the user cost indicating the expenditure) of the housing demand of a household with a handicapped individual are important. This analysis will provide more effective policy formulation and policy direction for the families of the disabled.

A Study on the Actual Use of Mobile Electronic Notification Service (모바일 전자고지서비스의 사용실태에 대한 조사 연구)

  • Kim, Jong-Bae
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.21 no.5
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    • pp.167-180
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    • 2021
  • Due to the development of IT technology and the spread of infectious diseases, online non-face-to-face services are rapidly expanding. In particular, the information delivery process is also changing from the past postal branch-based to an information delivery system using mobile devices. This change is due to the change from the information delivery using the telephone line to the information delivery system using the Internet. Mobile notification service is a service that sends electronic notices to mobile devices held by users to deliver information and is validated for delivery, which has the advantage of reducing the benefits of unnecessary mail production, exposure to personal information, and misdelivery. However, user identification information must be provided to operators that provide mobile electronic notification services. In this paper, the current state of use of the mobile electronic notice service, which has been in effect since 2019, is investigated and analyzed, and the current mobile electronic notice service is to be safely provided and to take appropriate protection measures for personal information. In providing the mobile electronic notification service to users, it is possible to identify the service standards required by the sending agency, and based on this, prepare the technical standards for the mobile electronic notification service that the sending agency must comply with in advance and use it for the mobile electronic notification service.

Un-subscribing; Categorization of Subscription Services with Satisfaction Factors and the Reasons for Exit (구독서비스 유형별 소비자 만족도 및 해지 사유 연구)

  • Suh, YouHyun;Kim, Rando
    • Journal of Digital Convergence
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    • v.19 no.9
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    • pp.125-133
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    • 2021
  • This study investigated to explore the broadened concept of the subscription service market and categorize of the subscription market and its consumer behavior. We examined the satisfaction of the service users and the reasons for terminating the subscription. Survey respondents were 443 people in their 20s and 30s, who actively use subscription services. As a result of the survey it was found that users in their 20s were more satisfied with the overall subscription service than those in their 30s, and that user's residential areas were evenly distributed regardless of metropolitan area or non-metropolitan area. As a reason for the cancellation of subscription service: the lower the novelty of subscription, the less personalization tailored to consumer, the lack of feeling self-growth while using the service, and the more termination is made. Our findings have magnified the understanding of consumers behaviors in the age of 20s and 30s of using and terminating subscription service and hopefully be used for future studies of subscription services.