• Asia pacific journal of information systems
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• 제24권1호
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• pp.65-91
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• 2014

Our study adopted ELM (Elaboration Likelihood Model) to measure the impact of central and peripheral cues on e-healthcare website behavior and its consequence on perceived loyalty of users. While most of ELM studies did not elaborate the antecedent of both central and peripheral cues, we measured the antecedents of those information processing routes to clarify how technical and quality factors (i.e. information organization, security concern, and website attractiveness) develop the nature of either central or peripheral route. We found that information organization was the main antecedent of information quality presented on the website. Second, the results revealed that website security has a positive effect on website credibility. Third, we also found that website attractiveness was positively associated with website credibility. Fourth, consistent with elaboration likelihood model, the empirical findings suggested that information quality (central cue) and website credibility (peripheral cue) were strong predictors of behavior intention to use health website. Our findings also suggested that behavior intention to use health website significantly influenced perceived loyalty.

• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.173-182
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• 2022

Healthcare organizations are overwhelmingly embracing smart value-based care strategies, which focuses on providing superior treatment at a significantly lower cost and quality of service (QoS). For these purposes, fifth generation (5G) of mobile service provides an innumerable improvement that clearly outperforms previous generations e.g., 3G and 4G. However, as with most advancements, 5G is projected to introduce new challenges, prompting the community to think about what comes next. This research was conducted to examine the most recent smart 5G technology applications and the solutions they provide to the healthcare industry. Finally, the paper discusses how the upcoming 6G technology has the potential to transform the future of healthcare sector even beyond the current 5G systems.

• 디지털콘텐츠학회 논문지
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• 제16권1호
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• pp.85-96
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• 2015

최근의 스마트 디바이스를 통해 사용자의 신체 데이터 모니터링이 가능해짐에 따라, 앞으로의 건강 정보의 활용 패턴이 달라질 것으로 기대된다. 이용자들이 헬스 콘텐츠를 인지, 활용하는 방식을 고려하여 건강에 대한 본질적 동기를 이끌어내는 것이 중요하다. 이를 위해 수집된 정보와 데이터를 활용한 예방 중심의 콘텐츠 기획과 개발 필요성이 요구된다. 이에 따라 본 논문에서는 IT를 매개한 헬스 커뮤니케이션 분야의 연구중 e-헬스 리터러시와 같이 개인의 정보 활용과 관련된 연구들을 검토하고, IT를 매개할 때 발생하는 새로운 커뮤니케이션적 특성들을 신속성, 상호작용성 그리고 데이터 캡쳐링으로 분류하였다. 건강 정보를 인지, 처리하는 관점에서 개인의 건강 콘텐츠 참여와 예방에 대한 본질적인 동기를 증진시킬 수 있는 방법인지 논의하고, 그에 합당한 헬스 콘텐츠 전략을 탐색해보았다.

• Healthcare Informatics Research
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• 제24권4호
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• pp.387-393
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• 2018

Objectives: This paper describes an experience of implementing seamless service trials online and offline by adopting Internet of Things (IoT) technology based on near-field communication (NFC) tags and Bluetooth low-energy (BLE) beacons. The services were provided for both patients and health professionals. Methods: The pilot services were implemented to enhance healthcare service quality, improve patient safety, and provide an effective business process to health professionals in a tertiary hospital in Seoul, Korea. The services to enhance healthcare service quality include healing tours, cancer information/education, psychological assessments, indoor navigation, and exercise volume checking. The services to improve patient safety are monitoring of high-risk inpatients and delivery of real-time health information in emergency situations. In addition, the services to provide an effective business process to health professionals include surveys and web services for patient management. Results: Considering the sustainability of the pilot services, we decided to pause navigation and patient monitoring services until the interference problem could be completely resolved because beacon signal interference significantly influences the quality of services. On the other hand, we had to continue to provide new wearable beacons to high-risk patients because of hygiene issues, so the cost increased over time and was much higher than expected. Conclusions: To make the smart connected hospital services sustainable, technical feasibility (e.g., beacon signal interference), economic feasibility (e.g., continuous provision of new necklace beacons), and organizational commitment and support (e.g., renewal of new alternative medical devices and infrastructure) are required.

• 디지털산업정보학회논문지
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• 제14권3호
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• pp.11-20
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• 2018

Smart devices refer to various devices and control equipment such as health care devices, imaging devices, motor devices and wearable devices that use wireless network communication (e.g., Wi-fi, Bluetooth, LTE). Commercial services using such devices are found in a wide range of fields, including home networks, health care and medical services, entertainment and toys. Studies on smart devices have also been actively undertaken by academia and industry alike, as the penetration rate of smartphones grew and the technological progress made with the fourth industrial revolution bring about great convenience for users. While services offered through smart devices come with convenience, there is also various security threats that can lead to financial loss or even a loss of life in the case of terrorist attacks. As attacks that are committed through smart devices tend to pick up where attacks based on wireless internet left off, more research is needed on related security topics. As such, this paper seeks to design an access control method for reinforced security for smart devices. After registering and authenticating the smart device from the user's smart phone and service provider, a safe communication protocol is designed. Then to secure the integrity and confidentiality of the communication data, a management process such as for device renewal or cancellation is designed. Safety and security of the existing systems against attacks are also evaluated. In doing so, an improved efficiency by approximately 44% compared to the encryption processing speed of the existing system was verified.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권3호
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• pp.991-1013
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• 2020

E-health services have provided interoperability between personal health devices in personal area network, based the ISO/IEEE 11073 standard. In the healthcare system, the manager handles most agents concurrently through wireless communication. However, due to the distance limitation and the increased number of agents, it may be difficult to provide continuous connectivity. Recently, body area devices have been equipped with various applicable agents, which can even handle agents on behalf of the manager. A BAD may act as an intermediary device to increase system efficiency and performance. In this study, a device called "proxy", which can be installed as software on BAD devices, is proposed. The data measured by an agent can be sent to the proxy first, and subsequently be sent to the manager again. Agents and the manager are not aware of the proxy existence and work normally without the proxy. Furthermore, a new smart proxy and modified manager are proposed. The smart proxy acts as one agent handling measurement data from several agents, which can transmit a significant amount of data at once. The proxy and smart proxy maintain compatibility with existing devices that conform to the 20601 standard. The proposed schemes are verified and the complexities of devices are analyzed. The analysis shows no significant difference among the proxy, smart proxy, and manager. Simulations exhibit that the proposed schemes can improve the system performance.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권11호
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• pp.3003-3029
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• 2023

The rapid evolution of the IoT has paved the way for new opportunities in smart city domains, including e-health, smart homes, and precision agriculture. However, this proliferation of services demands effective SLAs between customers and service providers, especially for critical services. Difficulties arise in maintaining the integrity of such agreements, especially in vulnerable wireless environments. This study proposes a novel SLA management model that uses an SDN-Enabled WSN consisting of wireless nodes to interact with smart contracts in a straightforward manner. The proposed model ensures the persistence of network metrics and SLA provisions through smart contracts, eliminating the need for intermediaries to audit payment and compensation procedures. The reliability and verifiability of the data prevents doubts from the contracting parties. To meet the high-performance requirements of the blockchain in the proposed model, low-cost algorithms have been developed for implementing blockchain technology in wireless sensor networks with low-energy and low-capacity nodes. Furthermore, a cryptographic signature control code is generated by wireless nodes using the in-memory private key and the dynamic random key from the smart contract at runtime to prevent tampering with data transmitted over the network. This control code enables the verification of end-to-end data signatures. The efficient generation of dynamic keys at runtime is ensured by the flexible and high-performance infrastructure of the SDN architecture.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2015년도 추계학술발표대회
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• pp.763-766
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• 2015

Smart Healthcare System as an Open Platform (Shesop) is an integrated healthcare system and have several features, one of them is Steppy Application. Steppy does count your step and display on Shesop website. In this system security issues are not properly addressed, while Personal Health Record (PHR) patient stored in the cloud platform could be at risk. In fact, the huge electronic information available online, people needs reliable and effective technique for privacy preserving. In order to improve the security of data which are displayed on the Shesop website, so that anyone who access could not tamper without permission. Recently Xu et al. showed a pseudonym scheme using smart card as a solution in e-health systems which uses discrete logarithm problem with cyclic group. In this paper, we adopt their scheme and use it application into smartphone using Near Field Communication (NFC) to construct security in Steppy apps.

• 한국재난정보학회 논문집
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• 제19권3호
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• pp.519-531
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• 2023

건설 사업장에서 발생하는 안전사고 예방을 목표로 건설 현장의 불안전한 행동이라는 고질적 어려움과 고충을 해소하기 위해서 스마트 안전보건활동이라는 변수를 통하여 의도된 안전한 행동을 만들고, 이러한 행동 변화로 산업재해 감소에 도움이 되고자 한다. 연구목적: 스마트 안전보건활동이 불안전한 행동으로 발생하는 사고와 근본 원인인 근로자 행동 변화에 어떤 영향을 미치는지 분석하고, 이 활동은 근로자의 안전 경험치가 향상되고, 불안전한 행동을 의도된 안전한 행동으로 변화되며, 작업중에 나타나는 불안전 행동이 줄어들므로 안전사고 예방과 근로자 생명 보호에 도움이 된다는 가설을 검증한다. 연구방법: 스마트 안전보건활동을 독립변수(X)로 선정하였고, 근로자 행동 의도인 의도된 안전과 불안전을 종속변수(Y), 태도와 주관적 규범, 계획된 행동 통제를 매개변수(M)로 정하였다. 척도의 신뢰성과 타당도 분석은 안전보건활동에 관한 탐색적 요인분석과 판별타당도분석, 집중타당도를 분석했으며, 행동 변화의 가설검증을 위해서 주요 변수의 경로분석과 근로자 행동 변화의 실증분석으로는 베이지안모델 분석과 MC시뮬레이션의 확률밀도 분포를 통해 연구를 검증했다. 연구결과:건설 현장의 스마트 안전보건활동을 경험한 근로자는 불안전한 행동이 줄고, 의도된 안전 행동을 한다는 분석이 가장 높게 나타남을 알 수 있었다. 이는 근로자 행동변화에 영향을 미칠것이라는 연구가설이 입증되었고, 연구분석의 구조방정식과 경로분석에서 변수간의 상관관계 확인, 실증분석을 통해 스마트 안전보건활동이 근로자 불안전한 행동을 통제하고, 감소시킬 수 있다는 점을 확인하였다. 결론:건설 현장에서 사고를 예방하고 근로자의 행동을 변화시키기 위해서는 스마트 안전 보건활동이 매우 중요한 항목이란 것을 알 수 있었다.

• Smart Structures and Systems
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• 제3권3호
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• pp.299-320
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• 2007

Smart sensors densely distributed over structures can provide rich information for structural monitoring using their onboard wireless communication and computational capabilities. However, issues such as time synchronization error, data loss, and dealing with large amounts of harvested data have limited the implementation of full-fledged systems. Limited network resources (e.g. battery power, storage space, bandwidth, etc.) make these issues quite challenging. This paper first investigates the effects of time synchronization error and data loss, aiming to clarify requirements on synchronization accuracy and communication reliability in SHM applications. Coordinated computing is then examined as a way to manage large amounts of data.