• Journal of information and communication convergence engineering
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• 제12권2호
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• pp.109-115
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• 2014

This paper presents a concurrent channel time allocation scheme used in the reservation period for concurrent transmissions in 60-GHz wireless personal area networks (WPANs). To this end, the proposed resource allocation scheme includes an efficient method for creating a concurrent transmission group by using a table that indicates whether individual streams experience interference from other streams or not. The coordinator device calculates the number of streams that can be concurrently transmitted with each stream and groups them together on the basis of the calculation result. Then, the coordinator device allocates resources to each group such that the streams belonging to the same group can transmit data concurrently. Therefore, when the piconet coordinator (PNC) allocates the channel time to the individual groups, it should allow for maximizing the overall capacity. The performance evaluation result demonstrates that the proposed scheme outperforms the random grouping scheme in terms of the overall capacity when the beamwidth is $30^{\circ}C$ and the radiation efficiency is 0.9.

• 농촌지도와개발
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• 제8권1호
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• pp.73-83
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• 2001

North Dakota State University (NDSU) Extension Service's purpose was to create a learning partnership that helped adults and youth enhance their lives and communities. NDSU Extension Service has maintained a strong blend of county, regional and state staff to support their program delivery. Experiment Station and Extension Service were integrated both in their job duties and at the administrative level. While researchers at the campus and center carried out both research and outreach activities with producers, Extension staff both at county and center carried out some research activities as well as outreach activities. The strong county-based Extension network was the main avenue for program delivery. Extension agents also provide programs on a multi-country basis. Program planning includes county advisory councils, multi-county advisory councils, support groups, and commodity groups, such as farmers and business people. Planning was used to shape their long-range plan of work along with adjustments to their annual activities. Funding of the NDSU Extension Service has been a blend of federal, state, and county dollars. In the past few years, grant dollars and agency partnerships have increased. Local input into extension programs, combined with support and funding from state and federal partners, enabled the extension service to truly meet the needs of people.

• STI Policy Review
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• 제5권1호
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• pp.131-144
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• 2014

The entrepreneurial university concept is a new challenge and opportunity for science and technology universities in Korea. The traditional university functions of education, research, and community service are still highly relevant, but increasingly so are new types of collaboration for research outcomes and funding resources. Strategic university management is needed to handle socioeconomic contribution, involving the creation and maintenance of proactive relationships with firms, national and regional governments, and other regional entities. The emergence of the entrepreneurial university in Korea is similar to the socioeconomic changes observable in the history of university development in America and in many other developed countries. In this paper, we examine the emerging paradigm of entrepreneurial universities in Korea and discuss the interactions among universities, firms, and government strategy and policy by investigating and comparing two universities, POSTECH and KAIST, in their leadership, adaptation to changes in the environment, business strategies, organization, and cooperative network. We conclude with policy points that emphasize the fact that while entrepreneurial universities are an emerging concept, they can expand innovation and creativity in education and research in Korean universities in the mid-to-long term if university administration, policymakers and public administrators, and regional innovation actors take an interest in the need for a new organization and system where university research can contribute socioeconomically.

• Journal of Information Technology Applications and Management
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• 제24권1호
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• pp.81-91
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• 2017

In Korea, "Act on the Development of Cloud Computing and Protection of its Users" has been enforced since September 28, 2015. Many countries implemented 'Cloud First' policies and global companies such as Amazon, Microsoft, IBM started cloud services in Korea. Under these circumstance, the Act was established for developing the cloud computing industry. The Act includes clauses for encouraging the use of private cloud computing by public organizations, supporting small- and medium-size cloud service providers, and utilizing secure cloud computing services by users. However, some terms appear to be similar but have different meanings from "Act on Promotion of Information and Communications Network Utilization and Information Protection, etc." and "Personal Information Protection Act". This generated some confusion and conflicts in relation to providing user information to a 3rd party and notifying the intrusion in the Cloud Computing Act. This paper discusses these issues and suggestions for revision of the Cloud Computing Act.

• 한국통신학회논문지
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• 제42권4호
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• pp.806-815
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• 2017

한국군은 국방시설기준이 정립되어 있으나 대부분 시설위주의 설계기준에 중점을 두고 작성되어 있다. 특히 정보통신분야에서는 세부적인 기준은 제시하지 않고 대략적인 수준으로만 제시되어 있다. 미군의 경우 1990년부터 각 군이 공통적으로 적용 가능한 시설기준에 대하여 통합시설기준서(UFC : Unified Facilities Criteria)를 완성해 모든 사업에 공통적용 할 수 있도록 설계기준을 제시하고 있다. 특히 정보통신분야에서는 시설분야와 연계해서 건물내부체계는 미군의 기지통신 기반구조설계기준(I3A: Installation, Information, Infrastructure Architecture)과 시스템에 대해서는 기지 및 캠퍼스지역 네트워크설계기준(ICAN : Installation and Campus area Network)과 비교를 통해 우리군의 지휘 통제시설 및 일반/행정시설에 대한 바람직한 설계기준선을 제시한다.

• ETRI Journal
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• 제27권6호
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• pp.691-696
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• 2005

In asynchronous transfer mode (ATM) networks, fixed length cells of 53 bytes are transmitted. A cell may be discarded during transmission due to buffer overflow or a detection of errors. Cell discarding seriously degrades transmission quality. The quality degradation can be reduced by employing efficient forward error control (FEC) to recover discarded cells. In this paper, we present the design and implementation of decoding equipment for FEC in ATM networks based on a single parity check (SPC) product code using very-large-scale integration (VLSI) technology. FEC allows the destination to reconstruct missing data cells by using redundant parity cells that the source adds to each block of data cells. The functionality of the design has been tested using the Model Sim 5.7cXE Simulation Package. The design has been implemented for a $5{\times}5$ matrix of data cells in a Virtex-E XCV 3200E FG1156 device. The simulation and synthesis results show that the decoding function can be completed in 81 clock cycles with an optimum clock of 56.8 MHz. A test bench was written to study the performance of the decoder, and the results are presented.

• Journal of Information Processing Systems
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• 제7권1호
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• pp.111-120
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• 2011

The concept of Smart-Homes is becoming more and more popular. It is anticipated that Radio Frequency IDentification (RFID) technology will play a major role in such environments. We can find many previously proposed schemes that focus solely on: authentication between the RFID tags and readers, and user privacy protection from malicious readers. There has also been much talk of a very popular RFID application: a refrigerator/bookshelf that can scan and list out the details of its items on its display screen. Realizing such an application is not as straight forward as it seems to be, especially in securely deploying such RFID-based applications in a smart home environment. Therefore this paper describes some of the RFID-based applications that are applicable to smart home environments. We then identify their related privacy and security threats and security requirements and also propose a secure approach, where RFID-tagged consumer items, RFID-reader enabled appliances (e.g., refrigerators), and RFID-based applications would securely interact among one another. At the moment our approach is just a conceptual idea, but it sheds light on very important security issues related to RFID-based applications that are beneficial for consumers.

• International Journal of Advanced Culture Technology
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• 제5권1호
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• pp.83-89
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• 2017

In this paper, we propose an extended method of one-hot Long Short-Term Memory (LSTM) and evaluate the performance on spam filtering task. Most of traditional methods proposed for spam filtering task use word occurrences to represent spam or non-spam messages and all syntactic and semantic information are ignored. Major issue appears when both spam and non-spam messages share many common words and noise words. Therefore, it becomes challenging to the system to filter correct labels between spam and non-spam. Unlike previous studies on information filtering task, instead of using only word occurrence and word context as in probabilistic models, we apply a neural network-based approach to train the system filter for a better performance. In addition to one-hot representation, using term weight with attention mechanism allows classifier to focus on potential words which most likely appear in spam and non-spam collection. As a result, we obtained some improvement over the performances of the previous methods. We find out using region embedding and pooling features on the top of LSTM along with attention mechanism allows system to explore a better document representation for filtering task in general.

• 한국산학기술학회논문지
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• 제15권5호
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• pp.3153-3158
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• 2014

스쿨존에서 빈번하게 발생하는 어린이 안전사고에 능동적으로 대처하기 위해서는 상황 인식에 대한 자동화된 모듈에 대한 연구가 필요하다. 스쿨존과 같은 지역에서 차량의 진입, 어린이의 객체 인식, 그리고 GPS 좌표 정보를 기반으로 감시 시나리오를 구축하여, 전략화된 시나리오에 맞는 상황이 발생되었다고 판단되면 스쿨존 안전도를 높이기 위해 이에 대한 조치를 취하게 된다. 본 논문에서는 GPS 센서와 영상센서 그리고 네트워크에 연결된 모니터링 서버와의 통합을 기반으로 상황인식 방안을 연구하였다. 영상센서 부문과 GPS분석부문을 통해 상황인식을 객체분석을 수행하고 시나리오에 기반한 상황에 따라 능동적으로 대처할 수 있는 방안을 제안한다.

• 한국음향학회지
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• 제40권2호
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• pp.121-129
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• 2021

본 논문에서는 학습 기반 압축 센싱을 이용하여 측면 주사 소나 영상의 해상도를 향상하는 초해상도 기법을 다룬다. 딥러닝과 압축 센싱이 접목된 학습 기반 압축 센싱은 구조적인 측면에서 피드-포워드(feed forward) 네트워크 형태이며 학습을 통하여 파라미터들을 자동으로 설정하게 된다. 본 논문에서는 초해상도 과정에서 필요한 추가 정보들을 다양한 초기화 방법을 통해 효과적으로 추출할 수 있는 방법을 제안한다. 다양한 모의 실험에서 제안하는 방법은 기존 방식보다 Peak Signal-to-Noise Ratio(PSNR) 및 Structure Similarity Index Measure(SSIM) 지표상 향상된 성능 결과를 나타내었다.