• International Journal of Advanced Culture Technology
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• 제8권3호
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• pp.269-274
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• 2020

It has used buoy for efficient domestic farm operations and fishermen fish. Buoy uses IoT-based communication to transmit water temperature, salinity, humidity, wind speed, etc. to fishers in real time. In this paper, we utilize LoRa, which enables communication in the marine environment, to construct a network and apply it to an actual buoy for monitoring. The implemented LoRa uses the 900MHz band to configure the network. The sensor consisted of a sensor that can monitor the atmospheric environment and a sensor that can monitor the marine environment. In addition, the information received in real time will be provided to the fishing village host. The fishermen were fully aware of this and took appropriate measures to conduct sea trials.

• 정보학연구
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• 제4권3호
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• pp.65-75
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• 2001

코드 분할 다중 접속은 이동 통신 시스템에 있어서 주요한 다원 접속 계획으로서 넓게 받아들여지고 있다. 광대역 코드분할 다원접속과 그 복합형 시분할 코드분할 다원접속은 무선이동 통신 시스템에 있어서 중요한 요소로서 10년 전부터 코드분할다원접속을 바탕으로 한 수용력 분석이 활발하게 진행되고 있다. 최근 들어서 서비스 향상 및 고품질 유지 와 무선자원 할당에 대한 관심은 이슈가 되고 있다. 본 논문은 고품질에 관련한 정보량 서비스를 유연하게 지원하고, 정보량 저하요인을 최소로 수용할 수 있는 코드분할다원접속을 기반으로 한 무선 자원할당에 관한 일반사항을 연구 제시한다.

• International Journal of Computer Science & Network Security
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• 제21권1호
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• pp.152-161
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• 2021

The paper focuses on Device-to-device (D2D) Architectures evaluation frameworks. D2D communication and discovery can improve spectrum usage efficiency and optimize the tradeoffs between throughput and energy consumption. The target operation modes involve both indirect communication between two nodes via a base station or the direct communication among proximal nodes, enabling use cases that can support communications out of cellular coverage, as well as low end-end delay requirements. The paper will present the architectural evolution of D2D networks within 3GPP standardization and will highlight key network functionalities and signaling protocols. It will also identify key analytical and simulation models that can be used to assess the performance and energy efficiency of resource allocation strategies, and it will present a suitable cross-layer integrated framework.

• 유통과학연구
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• 제20권6호
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• pp.43-56
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• 2022

Purpose: This study aims to investigate the impact of investing into technology development on banking performance in an emerging country. Research design, data and methodology: Based on the data of 12 commercial banks listed in Vietnam from 2011 to 2019 and performing multivariable regression analyses as well as conducting a variety of robustness tests, we carry out the empirical investigation to discover this impact. Results: Our empirical evidence shows that these spending help to improve significantly performance of banks. Particularly, the technology expenditures have positive effect on the net interest margin and the non-interest income in which the level of influence on the latter is relatively remarkable in comparison with the former. At the same time, the result does not support the view that increasingly spending on technology may lead banks to face the risk of instability. Conclusions: Overall, our empirical analysis indicates that increasing investment into distribution information and communication technologies will help to enhance business strategies of banks and thus we advocate the bright side of technology development and digitalization in banking sector. We believe that the research is useful for both managers, regulators and policy makers in Vietnam as well as in countries having similar financial structure.

• 디지털융복합연구
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• 제15권4호
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• pp.251-258
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• 2017

본 연구의 목적은 노인요양시설 종사자들을 대상으로 내부마케팅요인이 조직 구성원의 직무만족, 감정노동과 조직몰입에 미치는 영향을 분석하는 것이다. 구조화된 설문조사를 통해 자료를 수집 하였으며, 최종분석 대상자는 경남지역과 경북지역의 노인요양시설에 근무하는 191명이고 연구모형의 가설검증은 AMOS 18.0을 이용하여 경로분석을 시행하였다. 본 연구의 주요 결과는 다음과 같다. 내부마케팅 요인이 직무만족에는 내부커뮤니케이션, 경영자지원만 영향을 미쳤으며, 감정노동에는 경영자지원만, 조직몰입에는 내부커뮤니케이션과 경영자지원이 영향을 미치는 걸로 나타났다. 본 연구결과의 시사는 장기요양시설 종사자들의 조직몰입 성과를 높이기 위해서는 바로 내부마케팅 역량 강화가 아니라 1차적으로 직무성과를 높여야 하며, 2차적으로 직무성과를 높이기 위해서는 종사자들의 직무만족과 감정노동에 대한 서비스 질의 변인을 좀 더 다양화한 연구가 필요하다.

• International Journal of Computer Science & Network Security
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• 제23권12호
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• pp.225-234
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• 2023

In this era of information and communication technology (ICT), tremendous improvements have been witnessed in our daily lives. The impact of these technologies is subjective and negative or positive. For instance, ICT has brought a lot of ease and versatility in our lifestyles, on the other hand, its excessive use brings around issues related to physical and mental health etc. In this study, we are bridging these both aspects by proposing the idea of AI based mental healthcare (AIMS). In this regard, we aim to provide a platform where the patient can register to the system and take consultancy by providing their assessment by means of a chatbot. The chatbot will send the gathered information to the machine learning block. The machine learning model is already trained and predicts whether the patient needs a treatment by classifying him/her based on the assessment. This information is provided to the mental health practitioner (doctor, psychologist, psychiatrist, or therapist) as clinical decision support. Eventually, the practitioner will provide his/her suggestions to the patient via the proposed system. Additionally, the proposed system prioritizes care, support, privacy, and patient autonomy, all while using a friendly chatbot interface. By using technology like natural language processing and machine learning, the system can predict a patient's condition and recommend the right professional for further help, including in-person appointments if necessary. This not only raises awareness about mental health but also makes it easier for patients to start therapy.

• 한국인터넷방송통신학회논문지
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• 제12권6호
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• pp.111-116
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• 2012

차량통신은 정보통신기술과 차량 및 도로 기술을 결합한 대표적인 융합기술중 하나이다. 일반적으로 차량통신은 WAVE (Wireless Access in Vehicular Environments)라 일컫어지는 IEEE 802.11p 표준을 채택하고 있다. 본 논문에서는 차량-노변기지국간 통신 및 차량간 통신을 지원하는 IEEE 802.11p 기반 통신시스템의 멀티홉 전송방식에 대해 알아본다. 먼저 IEEE 802.11p 기반 통신시스템의 성능에 대해 간단히 살펴본 후 브로드캐스팅과 유니캐스팅의 멀티홉 전송 방식에 대해 소개한다. 제안된 방식의 성능은 실제 시스템을 구현한 후 실험을 통한 결과를 통해 알아본다.

• Journal of Advanced Marine Engineering and Technology
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• 제29권4호
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• pp.384-390
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• 2005

This paper addresses the design and implementation of a wireless network. proposed as a cost-effective support platform for PLCs. With this network. one or more supervising stations may access remote equipment like PLCs. An applicable communication methods are described and we applied efficient method among them to PLCs communication. The paper specifies these requirements and indicates methods to fulfill them. Also. it provides to the model of operation, and focuses on the implementation approach. The hardware and software design is described together with a number of critical points related to wireless communication on the Cnet. Furthermore, a discussion on system expandability and performance is tackled and some observations are stated. The main conclusion is, that the proposed method can feature good performance under normal operating conditions.

• 전자통신동향분석
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• 제39권3호
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• pp.36-47
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• 2024

Low Earth Orbit (LEO) satellite communications has become a crucial technology for next-generation communication networks owing to its hyperconnectivity capabilities. We examine the progress and application areas of LEO satellite communication services. The LEO satellite communication industry has transitioned from being predominantly driven by governments and institutions to being led by the private sector, following the trajectory of the NewSpace movement. Leading corporations such as SpaceX Starlink and Eutelsat OneWeb are deploying LEO satellite networks to offer internet services, while Telesat is preparing to establish its satellite communication network. LEO satellite communications is expected to have a major impact on various sectors of society, particularly for upcoming sixth-generation services. Therefore, the South Korean government must promptly formulate policy support strategies aimed at invigorating the LEO satellite communication industry. This can be achieved through initiatives such as bolstering research and development and extending corporate assistance.

• 전자공학회논문지CI
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• 제42권4호
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• pp.59-68
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• 2005

본 논문에서는 차세대 통신 플랫폼을 위한 PCI 익스프레스의 전송계층과 데이터 연결계층의 모든 기능을 지원하는 PCI 익스프레스 컨트롤러를 설계하였다. 설계된 컨트롤러는 재전송 메커니즘을 효과적으로 지원하기 위해 제안된 송신버퍼 구조를 가지고 있다. 이 버퍼 구조는 전송 버퍼와 재전송 버퍼를 한 개의 버퍼로 통합하여 재전송 버퍼의 공간을 유동적으로 할당할 수 있는 방법이다. 또한 설계된 컨트롤러의 송신단 전송계층은 제안된 버퍼 구조를 효과적으로 지원하도록 설계되어 졌다. 흐름제어를 지원하기 위해 PCI 익스프레스의 모든 수신 디바이스는 각 명령어를 위한 3개의 수신 버퍼를 가지고 있어야 하며, 각 수신 버퍼의 빈 공간을 주기적으로 상대 디바이스에 알려주어야 한다. 설계된 컨트롤러에서는 단지 하나의 수신 버퍼를 이용하여 흐름제어를 보다 쉽게 지원하기 위한 방법을 제안하였다. 또한 설계된 컨트롤러는 제안된 테스트 벤치를 통해 검증되었고 동작함을 확인할 수 있었다.