• Journal of information and communication convergence engineering
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• v.16 no.1
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• pp.23-30
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• 2018

In cognitive radio (CR), spectrum sensing is an essential function since secondary users (SUs) must determine whether the primary user (PU) is utilizing the channel or not, and furthermore, SUs opportunistically access the licensed channel when the PU is absent. In this paper, spectrum sensing is implemented by energy detection, and a software-defined radio testbed is built to evaluate sensing performance by energy detection in a real environment. In particular, the testbed was built based on the GNU's Not Unix (GNU) Radio software platform and Universal Software Radio Peripheral National Instruments 2900 devices. More specifically, a new block of energy detection is developed by using an out-of-tree module from GNU Radio. To successfully integrate CR into the cloud computing paradigm, we also implement cloud computing-based spectrum sensing by utilizing a cloud server with ThingSpeak, such that we can store, process, and share the sensing information more efficiently in a centralized way in the cloud server.

• Journal of Fisheries and Marine Sciences Education
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• v.26 no.4
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• pp.838-845
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• 2014

The objective of this study was to propose the priorities among the possible development strategies that can activate the industry while the market potential of cruise tourism industry has been increasing. To achieve the research aim, the A'WOT (SWOT-AHP) method was adopted in this study focusing on Jeju cruise industry. As a result of analysis, the strength factor (0.421) was the most important thing among the proposed factors. And, opportunity (0.348), weakness (0.135), and threat (0.096) factors were calculated in turn. Based on the A'WOT analysis, the most urgent thing among the strategy alternatives was 'Installation of dedicated department for Jeju cruise industry'. Accordingly, this result can be utilized as the fundamental data in order to make an optimal decision following by the environmental changes in Jeju cruise industry.

• Journal of Korean Medical classics
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• v.17 no.4
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• pp.106-119
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• 2004

This paper is mainly on the epistemology of "Dodeok-gyeong(道德經)" and "Hwangje-Naegyeong(黃帝內經)", and the relation of each other. Amog the conclusions, following things are worth mention. The point of "Dodeok-gyeong" can be said as the epistemological "Do(道)". When it expressed as something, it cannot be the original form. This principle can be applied to "Hwangje-Naegyeong" in the flow of Gi(氣) and in the property of movement of Eumyang-Ohaeng(陰陽五行). In "Dodeok-gyeong", the notions of the relativity of all things, come out as inter promotion and interacting. It can be related to the typical etiology and pathology of the Eastern medicine, In "Dodeok-gyeong", the emphasis on woman which represents the 'Eum' also emerged well in "Hwangje-Naegyeong". "Dodeok-gyeong" emphasize on the relative value of the contrasted things, In the Easten ideas, the smallest thing can be the same as the largest thing with the exception of comparison of each other. As the same way, the human body can be the small cosmos, and the Heaven and human beings correspond to each other.

• Lingua Humanitatis
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• v.5
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• pp.193-217
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• 2003

This paper aims to infer conversational implicatures from Chief Priest Sung-chul′s Nirvanic song in light of the Buddhist view of language and its communicative functions. Zen-dialogs in which nirvanic songs are classified are defined as rational dialogs, which in fact observe the rules of conversation such as the ones proposed by Paul Grice (1975) even though they apparently ignore the rules. This paper also addresses the formal characteristics of the Priest′s nirvanic song and argues that the song exploits the rules of conversation using the whole song as an implicature trigger. Taking it for granted that Chief Priest Sung-chul holds the view on language and its communicative functions just as specified in the Doctrine of Mere Consciousness, which is one of the major tenets of Korean Buddhism, especially of the Chogye order, this paper tries to explicitly show and systematize the language-to-world relationship, which is only alluded to in the Doctrine of Mere Consciousness. This paper also refines the assertion of the doctrine as to the nature of language, which maintains that language is not associated with either the mind or outer objects (that is, an unassociated dharma), and is "a shared thing among shared things." This shows that language continuously interacts with the mind in a different way from the ones in which associated mental activities (caittas) interact with the mind and that accordingly, language is "an unshared thing among shared things."

• The Journal of Korean Physical Therapy
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• v.4 no.1
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• pp.59-67
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• 1992

This study was carried out by using questionnaires with 230 lumbago patients who visited the general hospitals, orthopedic clinics, neurosurgery clinics and physical treatment centers in Taequ. Korea for one month from December 20, 1991 to January 20, 1992. The result of this study is summarized as follows. 1. 203 patients consisted of 113 males and 90 females, while 65 patients were was which was the highest percentage. 2. The relation between their occupational properties and lumbago indicated that there was significant relation in their total employed period, job hours, monthly average incomes(P<0.01), job satisfaction, working posture, mental stress(P<0.01), excessive usage of bark during working, lifting of heavy thing and serious noises. 3. The relation between social properties and lunbago showed that there was a remarkable relation in their introspective character(P<0.05). daily average riding hour(P<0.05), smoking(P<0.01), drinking(P<0.01) and insufficient physical exercise. 4. The relation between the clinical properties and lunbago indicated that the lumbago was mainly caused by lifting the heavy thing, which was continued fur three months or longer. And, it was shown that they consider the lumbago as one of serious diseases. In addition. they positively evaluated their physical treatment. Therefore, it is required to accomplish the comprehensive treatment of this lumbago on the basis of the educational contents centering around its prevention by performing more suitable health education.

• Journal of the Korean Home Economics Association
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• v.44 no.8
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• pp.13-21
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• 2006

The objective of this study was to investigate the fit preference for ready-to-wear clothes(jackets and slacks) of adult men and to determine the respective differences by the age range and obesity level. The study method was a questionnaire survey with 465 male subjects aged from 20 to 59 years old. The questionnaire was composed of fit preference tendency, physical measurements, age, and occupation. The findings were as follows. 1. Regarding the fit preferred for each part of jackets and slacks, among ready-to-wears, the 'thing with some extra width' in every part was most favored, followed by the 'thing fitting perfectly'. 2. Differences were found in the fit preference tendency by the age of adult men. The fit preference tendency was higher among those in their 20's than among those of the other age ranges. 3. Differences were also found in the fit preference tendency by the obesity level of adult men. The fit preference tendency was higher in the order of the emaciation, normalcy, and obesity types. 4. The fit preference tendency was more affected by age than by obesity level. Clothing companies should consider ease to offer the proper clothing desired by consumers.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.4
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• pp.219-226
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• 2018

IIoT(Industrial Internet of Thing) means that all manufacturing processes are informed beyond the conventional automation of process automation. The objective of the system is to build an information system based on the data collected from the sensors installed in each process and to maintain optimal productivity by managing and automating each process in real time. Data collected from sensors in each process is unstructured and many studies have been conducted to collect and process such unstructured data effectively. In this paper, we propose a system using Node-RED as middleware for effective big data collection and processing.

• Journal of the Korea Convergence Society
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• v.7 no.2
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• pp.1-6
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• 2016

Internet has been used by the unique space that users share various informations. Due to the development of Information communication technology(ICT), many devices were introduced. These devices are connected by Internet each other. The Internet of Things(IoT) use the Internet for the interconnection of the things. Studies for 'Internet of Things' progress extensively on today. Therefore, we studied the smart industries domain related with Internet of things. In this paper, three domains among the smart industries were described. These three domains such as smart city, smart home and smart health are related with our life. Therefore, we described many actual cases in three domains based on Internet of Things.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.8 no.1
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• pp.51-58
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• 2015

Internet of Thing is a collection of various technical components, and the interworking among heterogeneous devices, networks, applications is expected to be accelerated through the openness of IoT platform. For this reason, many technical and administrative security threats will occur in IoT environments. In this paper, authentication methods of recent researches are analyzed for safe IoT services, and new mutual authentication protocol is proposed to provide more secure communication. The proposed protocol prevents an impersonation as malicious gateway or illegal device providing mutual authentication between gateway and IoT device. The performance analysis and evaluation of proposed authentication protocol are performed.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.5 no.4
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• pp.33-40
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• 2006

The quality of the supply water which is supplied to consumer is not the thing of water after filtrating but the thing of water from faucet through pipe. As a result, heavy metals and microorganism, that is the major materials, which cause the distrust of the supply water is generated by supply process. Especially, the heavy metal is generated by the corrosion of waterworks. Besides, rupture by corrosion of pipe becomes the factor of supply water's pollution in waterworks and the factor of pollution of the soil and environment in drain pipe. Therefore, this research examined the weight reduction electric potential measure to measure the corrosion degree of piping materials after testing the corrosion of piping materials(Copper Pipe, Galvanized Steel Pipe, Stainless Steel Pipe) which is generally used at the moment in various corrosion environments(subterranean water, supply water, 3.5% NaCl, 3.5% $HNO_3$). And let me show basic design data about problem occurrence such as leakage water, rust water, inside and outside corrosion from this.