• KSCE Journal of Civil and Environmental Engineering Research
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• v.39 no.2
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• pp.351-359
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• 2019

In order to improve the problem of parking which is getting worse day by day, the municipality carries out a survey on the actual situation of the parking lot supply and demand periodically according to the related law. However, in the existing evaluation method, the parking demand that occurs under the condition that the demand is suppressed by the parking supply and regulation due to the limit of the survey method is investigated. In addition, the analysis is conducted only for the present year, and prediction and analysis of future parking problems are limited. Therefore, we propose a method to evaluate the status of parking supply and demand, which is differentiated to improve the problem of the existing evaluation method. As a result, comparing the existing method with the improved method, it can be seen that the improved evaluation method can be useful for establishing the long-term parking policy for the improvement of parking problems.

• Resources Recycling
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• v.28 no.3
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• pp.68-76
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• 2019

It is very necessary for the metal recycling industries and the researchers to understand the current status of demand and supply of non-ferrous metals and their scraps. Domestic demand and supply of non-ferrous metals and their scraps have been surveyed and reported on the journal of the Korean Institute of Resources Recycling since ten years before. However, it was confined to six major non-ferrous metals such as copper, aluminum, zinc, lead, nickel and magnesium because there are so many kind of non-ferrous metals. In this article also, demand and supply of these non-ferrous metals in addition tin during recent five years (2014 ~ 2018) in Korean markets were reviewed, and their recycling ratio of scraps were briefly estimated. The statistical data were mainly cited from the data issued by Korea Customs Service (KCS) and Korea Non-Ferrous Metal Association, and some fragmental published review articles from magazines and other technical reports.

• Journal of Broadcast Engineering
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• v.24 no.2
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• pp.341-352
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• 2019

The inconvenience of using the product weakens the competitiveness of the product and makes it difficult to obtain various users. This study proposes a 5-step evaluation method that is derived from a formal usability evaluation to suggest improvement directions for easier and more convenient manipulation of complex or inconvenient user interface. The 5-step usability evaluation method can not be applied to all broadcasting equipments, but it is expected to improve the user interface of broadcasting equipments. In addition, it is expected to provide an opportunity to more flexible access to user interface development to be applied to new application services in a variety of telecommunication convergence equipment industry, while leading the era of convergence of broadcasting industry throughout broadcasting equipment industry.

• Journal of Advanced Navigation Technology
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• v.25 no.5
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• pp.409-414
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• 2021

The growing concerns on the emission of particulate matter has prompted a demand for highly reliable particulate matter forecasting. Currently, several studies on particulate matter prediction use various deep learning algorithms. In this study, we compared the predictive performances of typical neural networks used for particulate matter prediction. We used deep neural network(DNN), recurrent neural network, and long short-term memory algorithms to design an optimal predictive model on the basis of a hyperparameter search. The results of a comparative analysis of the predictive performances of the models indicate that the variation trend of the actual and predicted values generally showed a good performance. In the analysis based on the root mean square error and accuracy, the DNN-based prediction model showed a higher reliability for prediction errors compared with the other prediction models.

• Korean Journal of Plant Resources
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• v.32 no.5
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• pp.543-558
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• 2019

This study was carried out to apply the taxonomic characters to identify and to provide the habitat circumstances for forty one un-introduced environmentally harmful plants in the Korea which have been designated by Ministry of Environment in 2016. We investigated the dried plant specimen from several herbaria and performed field habitat survey in western coast area of United States including California, Oregon and Washington. We suggest the first result for ecological risk discussion, weed risk assessment, taxonomic characters and classification keys for 8 species with the related species - Carduus acanthoides L. (Asteraceae), Carduus tenuiflorus W. Curtis (Asteraceae), Onopordum acanthium L. (Asteraceae), Chromolaena odorata (L.) R.M. King & H. Rob. (Asteraceae), Hydrocotyle ranunculoides L.f. (Apiaceae), Oenanthe pimpinelloides L. (Apiaceae), Ehrharta erecta Lam. (Poaceae), and Paspalum conjugatum P.J. Bergius (Poaceae).

• Journal of Communication Design
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• v.55
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• pp.20-30
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• 2016

This study was to verify the effect of art-education-oriented integrated human resource education (STEAM) on scientific competence and job competence of middle school students. The theme of the program developed for this study is "food design" using a 3-D printer. The 5 mockup lectures were developed for 237 students in ninth and tenth grades of Y Middle School in Gyeonggi-do Province, and the pre-/post-results were analyzed. As a result of analyzing the competence of STEAM education before and after the program, the job competence of general, science, and food science of students was improved after the program in general. Especially among three sub-areas of scientific competence, the change in component of research shows the most significant change in test statistics. The result of test statistics of food science job competence showed the most significant change among three sub-areas: general, scientific, and food science. This program was developed for on-site to be used for a school lecture, and the program may be reformed or used for different themes.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.3
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• pp.57-66
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• 2011

The current trend of the handover authentication delay time is gradually increased according to the interworking between 3G cellular network and WLANs. Therefore, authentication mechanism minimized in delay is required to perform the seamless handover and support the inter-subnet and inter-domain handover. In this paper, we propose a novel pre-authentication scheme based on the fast channel switching which directly performs the authentication with the next access point in advance. In addition, the proposed scheme is efficient in the inter-domain handover and can be easily implemented in current WLANs since it just modifies the client side of user. To analysis and evaluate our scheme, we compare the packet loss ratio and the delay time with the two standard 802.11 authentication schemes. The analytical results show that our scheme is approximate 10 times more effective than the standard schemes in packet loss and the delay time is minimized down to 0.16 msec.

• Journal of the Health Care and Life Science
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• v.8 no.2
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• pp.127-133
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• 2020

While only the experts could create the contents in the existing VR contents business, in the proposed "Untact Social VR Video-Based Tour Scheduling", the GUI (Graphic User Interface) allows anyone to easily and quickly share the information taken through VR camera after creating. It is intended to serve as a variety of SNS-based media by developing a structure that can be shared in html format after creating with the GUI menus. In particular, it is applied to companies that operate the SNS-type publicity projects including experience facilities and viewing facilities, and the various SNS-type publicity businesses that create the VR contents. Communication is clear compared to the existing homepage-based information delivery method, and It aims to provide universality that anyone can easily edit in an environment where only experts can edit VR video contents of.

• Journal of the Health Care and Life Science
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• v.8 no.2
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• pp.135-142
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• 2020

The purpose of this study was to analyze the frequency of use of hospitalization/outpatient care of patients with addresses in Yeongbuk-gu, Gangwon-do to identify the medical demand and status of medical use in Yeongbuk-do. The National Health Insurance Corporation (www.data.go.kr) conducted an analysis of health insurance and medical benefits (inpatient/outpatient) claims data from 2003 to 2017. The order of the highest frequency of chronic disease was ranked from 1st to 60th according to 'Healing Case and %'. In addition, the use of patients at Sokcho Medical Center, the only hospital in the Yeongbuk region, was analyzed at the same time. According to the analysis, the use of outpatient treatment and In-patients in the Yeongbuk area of Gangwon-do is increasing due to chronic non-infectious diseases from the past acute diseases. In particular, it is necessary to expand the functions of schizophrenia and obstetrics and gynecology and to carry out specific health projects necessary for the health care of the local community. Through this, we should improve the quality of life in Yeongbuk, Gangwon Province.

• Journal of the Health Care and Life Science
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• v.8 no.2
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• pp.95-104
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• 2020

This study was conducted in order to examine the effects of humanistic knowledge and empathy ability on cultural competence of nursing students. A convenience sample of 250 nursing students were recruited. The average scores were 2.50 for humanistic knowledge, 3.40 for empathy ability, and 3.33 for cultural competence. Humanistic knowledge had positive correlation with cultural competence. Also, the empathy ability was positively correlated with humanistic knowledge and cultural competence. Finally, cultural competence, empathy ability and level of academic score have shown to influence cultural competence. The research founds that humanistic knowledge, empathy ability and level of academic score influenced cultural competence of nursing students. Therefore, this study provides the basic information for improving the curriculum and quality of nursing for nursing students' cultural competency enhancement.