• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권6호
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• pp.2377-2397
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• 2020

Human activity recognition is widely used in smart homes, health care and indoor monitor. Traditional approaches all need hardware installation or wearable sensors, which incurs additional costs and imposes many restrictions on usage. Therefore, this paper presents a novel device-free activities recognition system based on the advanced wireless technologies. The fine-grained information channel state information (CSI) in the wireless channel is employed as the indicator of human activities. To improve accuracy, both amplitude and phase information of CSI are extracted and shaped into feature vectors for activities recognition. In addition, we discuss the classification accuracy of different features and select the most stable features for feature matrix. Our experimental evaluation in two laboratories of different size demonstrates that the proposed scheme can achieve an average accuracy over 95% and 90% in different scenarios.

• Architectural research
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• 제4권1호
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• pp.53-61
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• 2002

The typical Critical Path Method (CPM) leaves it to the construction managers to overcome two problems in developing networks. First, the construction manager needs to prepare information on the type of activities and their precedence relations in order to develop a network schedule. Second, he or she can include space information into the network schedule such as the locations where the activities take place, only with difficulty. These two problems make it difficult for an inexperienced person to create a network. The purpose of this paper is to provide construction managers with set equations of creating a network schedule for multiunit projects. A space-resource combined network creation are presented in this paper, which includes equations for generating a list of required activities, their precedence relations, and information on their location. Information on the space (location) and the resource is the required data for this method. Based on this information, this method divides a project into a number of activities so that each activity contains the information on the location where the activity takes place and the principal resource required for that activity. Precedence relations are then obtained from the sequence of space and resource. This method has the potential to reduce human efforts in scheduling activities.

• 한국도서관정보학회지
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• 제21권
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• pp.117-138
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• 1994

This study attempts to provide the foundation for a possibility that industrial su n.0, pporting organization can be strong information centers if they fortify their information dissemination activities, along with the basic functions. The following conclusions are resulted from the analysis in the operations of libraries, service methods and their publications of the information activities provided by the industrial su n.0, pporting organizations. First, the organizations have not be acquiring enough information materials. The services for bibliographic information should guarantee the uses of original documents. Second, the number of organizations providing on-line information services has been increasing, but the provided materials are nothing but their own materials produced during performing the basic functions. Third, the speedy information provision and efficient information dissemination for the end-users in the distance may be possible through on-line service, but it requires information analysis function to select the necessary information in our industrial environment. Forth, th information activities provided by the libraries of industrial su n.0, pporting organizations should be fortified.

• 한국IT서비스학회지
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• 제19권5호
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• pp.15-31
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• 2020

This study explores the process in which employees adopt the information security policy. The results of this study, which surveyed 234 employees in three call centers and four hospitals, show that the employees adapt the information security policy through the social structuring process suggested by the AST model. In particular, this study identifies roles of two appropriation activities (FOA : Faithfulness of Appropriation & COA : Consensus on Appropriation) observed in the social structuring process. Regarding to the interactions between the two appropriation activities, FOA, which indicates a better understanding of the information security policy, is examined as a more critical factor than COA, which indicates the degree of agreement among employees about how to use it. FOA not only has a direct effect on compliance intention toward the information security policy, but also indirectly through COA, whereas COA has only a indirect effect through FOA. This result shows that, in order for a company to successfully implement a new information security policy, it is important for employees to understand its purpose and intention. The adaption of information security policy through two appropriation activities is observed in both hospitals and call centers, but due to the different working environments, there were differences in the preceding variables affecting the appropriation activities. The results of this study are expected to provide guidelines for companies who want to successfully adopt information security policy.

• 한국정보시스템학회지:정보시스템연구
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• 제25권3호
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• pp.117-146
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• 2016

Purpose The purpose of this paper is to examine factors and mechanism inducing end users' faithful appropriation of information security behavior through the information security system. This study is also trying to find out the role of Employees' adaptive activities like learning and feedback seeking behavior for the information security in organizations. Design/methodology/approach An empirical study was carried out with a sample of employees working in the financial service company. Employees(n = 268) completed a written questionnaire. Structural equation modeling was used to analyze the data. Findings Results indicated that employees' learning activities and feedback seeking behavior fully mediated the effect of major information security factors toward end users' faithfulness of appropriation of information security systems. In order to increase the level of employees information security behavior in accordance with security guideline, organizations should facilitate interactions that support the feedback seeking process between employees on information security awareness and behavior. Additionally, organizations may reinforce these behaviors by periodical training and adopting bounty hunter systems.

• 융합경영연구
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• 제10권6호
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• pp.9-16
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• 2022

Purpose: This research investigates the differences in knowledge exchange activities and performances between startups and large companies in software industry clusters. Research design, data, and methodology: Six independent factors of human resource information, R&D and technology, marketing knowledge, government support information, strategic knowledge, and cooperation information were extracted to test the firm size effect in the relationships with two performance factors such as satisfaction with industry cluster location and satisfaction with financial performances. Data were collected through a survey of entrepreneurs, managers, and employees and tested by statistical analysis methodologies. Results: Three independent factors of human resource information, R&D and technology, and cooperation information were particularly significant in the relationship with both dependent factors. Strategic knowledge significantly affected financial performance. Knowledge exchange activities were more important in startups than in large companies for all eight factors. Conclusion: Policies for software industry clusters need a different approach for startups and large companies.

• Journal of Information Technology Applications and Management
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• 제25권4호
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• pp.41-65
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• 2018

Corporate Social Responsibility (CSR) activities are important tool in corporate management strategies. However, the way that companies conduct CSR activities might bring different effect on consumers. The purpose of this study is to verify the effect of CSR fit (similarity between the firm's CSR activities and the firm's core products or technologies) on the consumers' evaluation on product performance. In addition to the main effects of CSR fit on perceived product performance, and we also examined how this effect changes when CSR information source and consumer expertise are involved as control variables. Study 1 of this research was conducted with US consumers and study 2 was with Chinese consumers. Experimental results show that consumers' perceive product performance is better when the fit between CSR activities and firm's core products or technologies is low than the fit is high. When CSR information sources are neutral sources, consumers perceive product performance to be better when the fit between the firm's CSR activities and the firm's core products or technologies is low than the fit is high. However when CSR information was delivered by company's source like nadvertisement, such difference disappears. This study also show that the higher the customer's expertise, the better the product performance was perceived for high-fit CSR activities. On the other hand, the lower the consumer's expertise, the better perceived product performance was perceived for low-fit CSR activities.

• 정보학연구
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• 제2권1호
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• pp.131-147
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• 1999

전략유형과 정보기술 활동 집중화의 관계에 대한 기존 연구를 정리하면 다음과 같다. 원가 우위 경쟁 전략에는 정보기술 활동을 중앙에 집중시키는 것이 더 적합하고 차별화 전략의 경우에는 정보기술 활동을 분산시키는 것이 더 적합하다는 것이다. 그러나 이런 연구 결과가 아직 실증적으로 검증된 바 없다. 따라서 본 연구는 조직에서 포터의 경쟁 전략유형(원가우위 전략, 차별화 전략)과 정보기술의 집중화가 적합하게 조직될 때 실제로 정보 시스템 성과가 향상되는지 검증하고자 하였다. 현장연구를 통한 연구 결과를 보면, 두 변수의 적합성 여부에 따라 유의적인 성과차이를 보이지 않았다. 그러나, 기술적 통계를 보면 전략과 정보기술 활동의 집중화 정도가 적합하게 조직된 조직이 그렇지 않은 조직보다 대체로 성과가 높았다. 따라서 보다 충분한 시간적 여유를 가지고 조직 구조, 문화 등과 같은 주요 외생 변수를 추가하여 연구를 수행한다면 보다 의미있는 결과를 가져올 수 있을 것이다.

• 문화기술의 융합
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• 제9권2호
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• pp.399-405
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• 2023

코로나블루 발생 원인을 분석해 우리 사회의 정신건강 증진 방안을 찾아보았다. 여성이 남성보다 코로나블루가 더 심했으며, 연령에 따른 차이는 없었다. 코로나19 이후 외부활동이 줄고, 가계경제는 어려워져 코로나블루가 늘었다. 늘어난 미디어이용량과 부정적인 미디어정보문제는 코로나블루를 증가시켰다. 온라인활동은 코로나블루에 영향을 주지 않았다. 미디어이용으로 증가한 사회문제관심은 미디어이용이 코로나블루에 영향을 주는 과정에서 부분매개효과를 갖고 있었다. 우울증을 줄이기 위해서는 개인의 외부활동을 늘리고, 여성과 경제적 약자의 사회 경제적인 여건을 더 개선하고, 미디어의 재난정보 품질을 높이고, 수용자는 미디어를 적정하게 이용해야 한다고 강조했다.

• 한국컴퓨터정보학회논문지
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• 제20권7호
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• pp.109-114
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• 2015

With the realization that the police's personal information gathering activities can violate the authority to decide one's information guaranteed by the Constitution, many people are interested in the legal terms of the police's information gathering and handling. The police's personal information gathering activities imply both the purpose of public welfare and order and the risk of violation of basic rights of citizens, their effective balance is critical. In this respect, this study reviews the principle of proportion as a principle of control of personal information gathering and handling (police intelligence activities) by state to discuss its implications on legislation.