• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.913-916
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• 2009

This paper describes a hardware design of hash processor which implements HAS-160 algorithm adopted as a Korean standard. To achieve a high-speed operation with small-area, the arithmetic operation is implemented using a hybrid structure of 5:3 and 3:2 carry-save adders and a carry-select adder. The HAS-160 processor synthesized with $0.35-{\mu}m$ CMOS cell library has 17,600 gates. It computes a 160-bit hash code from a message block of 512 bits in 82 clock cycles, and has 312 Mbps throughput at 50 MHz@3.3-V clock frequency.

• Clinical and Experimental Reproductive Medicine
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• v.45 no.3
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• pp.101-109
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• 2018

In an age when a small quantity of sperm can lead to pregnancy through in vitro fertilization or intracytoplasmic sperm injection, selecting healthy sperm is important. Sperm DNA fragmentation (SDF) is known to be higher in infertile men. Terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labeling (TUNEL) and the alkaline comet test are SDF tests that directly measure DNA damage and have shown closer correlations with assisted reproduction results than indirect tools such as the sperm chromatin structure assay or the sperm chromatic dispersion test. It is difficult; however, to endorse a single test as the best test overall; instead, it is best to select a testing method based on each patient's clinical condition and goals. In a couple struggling with infertility, if the male partner has a high level of SDF, he should aim to decrease SDF through lifestyle modifications, antioxidant treatment, and ensuring an appropriate duration of abstinence, and physicians need to treat the underlying diseases of such patients. If sperm DNA damage continues despite the patient's and physician's efforts, other methods, such as micromanipulation-based sperm selection or testicular sperm extraction, should be used to select healthy sperm with nuclear DNA integrity.

• Journal of Korean society of Dental Hygiene
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• v.21 no.5
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• pp.639-644
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• 2021

Objectives: The purpose of this study was to analyze the factors that affected the number of citations for articles published in the Journal of Korean Society of Dental Hygiene based on previous studies. Methods: Information on papers including the number of citations was collected using a web crawling technique. The effect of the number of author keywords, the number of Medical Subject Headings (MeSH) keywords, MeSH match rate, abstract word count and keyword-abstract ratio on the number of citations was analyzed by multiple regression analysis. Results: The use of the MeSH keyword did not have a significant effect on the number of citations. Among the other factors, only the keyword-abstract ratio was statistically significant. Conclusions: Select a topic of constant interest in the field, write the title in detail using colons or asterisks if necessary, and do not repeat the words used in the title in keywords. Select specific keywords deeply related to the topic. In particular, choice words or phrases that are frequently used in the abstract. If the MeSH keyword selection contradicts the previous strategies, boldly give up the MeSH keyword.

• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.5
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• pp.969-974
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• 2021

South Korea is making efforts to select a drone industry, a type of unmanned aerial vehicle, as one of the 7 major industries in the country, to select a drone-specific liberalization zone and to establish and revise a drone-related bill. Through these efforts, drone delivery and drone taxis are expected to be operated in the future. Therefore, a multilateral collision avoidance system with existing aircraft such as drones, fixed-wing and rotary-wing should be established to prepare for possible drone and air-borne collisions.

• The Journal of the Convergence on Culture Technology
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• v.5 no.3
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• pp.119-124
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• 2019

The study aimed to identify the relationship between moral distress and ethical values among nursing student. The participants were 150 nursing students. The data were analyzed with SPSS 21.0 program. In the results, moral distress and ethical values showed positive correlations. Statistically significant differences were found in moral distress according to grade, select the reason for department and ethical values according to age, grade, select the reason, one's associate for department. Moral distress was positively correlated with ethical values. The findings suggest that programs aimed at decreasing moral distress and ethical values intention should be developed. Furthermore, future studies should explore variables that influence moral distress.

• Journal of Environmental Science International
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• v.27 no.11
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• pp.1083-1094
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• 2018

In this study, we analyzed the characteristics of six waterfront users who are currently being used to select indicators for waterfront development. It can be classified into urban type, inland type and coast type according to the place where waterfront space is located. These waterfront design elements include accessibility, public activity, and waterfront characteristics. Waterfront environment involves selecting the elements for considered and examined these with resepect to the goals of the study. In terms of accessibility to most waterfronts, it is analyzed that users who are located within 30 minutes' distance of walking are most likely to use it. As shown in the satisfaction survey of this study, the unsatisfactory satisfaction of water quality and quantity was found to be low in Unam pond, and the result shows that the overall satisfaction of waterfront space is also low. In the case of Chunggye Chun, the results of the survey on weekdays showed that the office workers, such as the offices located in the surrounding area, were mainly resting places. In the case of Naesungchun, it is possible to select the indicators that can help the direction of the festival as a survey on the users during the festival period. In this study, waterfront location, purpose of use, characteristics, environment, and subdivision are presented as indicators to be considered when developing the waterfront. It is expected that the proposed indicators will be able to determine the direction of development by reflecting characteristics of users.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.605-607
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• 2016

The trend is growing domestic and international travelers. Research before making plans to travel people, Leave the tour you do not know the way, there are people who can not find a better destination. In this paper, to solve this problem and provide a mobile-to efficiency in traveling through a smart-phone application. At the same time to improve the convenience and satisfaction, etc. Select the destination country and traveling through the guidance system and the destination in the shortest path from the current location of the user to select multiple destinations shorten the travel route and save time. Also implemented to provide a convenience to guide the position of the additional facilities.

• Journal of Environmental Science International
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• v.28 no.3
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• pp.371-384
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• 2019

The purpose of this study was to propose an efficient management plan for purchased land considering the hydrological, watershed characteristics and ecological functions of the target land and surrounding area based on the result of monitoring the water quality improvement effect obtained by purchasing the land in the watershed area in the Geum river system. For this purpose, this study investigated through literature review, and examined ways to apply them to this research by deriving implications from a comprehensive analysis of previous research cases. After that, the components of assessment were derived to evaluate the ecological function of the purchase land, and the ecological function evaluation model for each land and area was proposed. In order to select purchase and restoration priorities of the land, this study analyzed the ecological status of the purchased land in main watersheds and tributaries using Arc GIS ver 10.1. Through this, a process to select restoration priorities was developed. And this study constructed the integrated management process with proposing a mid - to long - term plan by integrating the purchased land valuation and restoration priority selection process. Based on this process, this study suggested an effective management plan for purchased land through the integrated ecological management system of lands purchased. It can be used systematically in appraisal valuation, land purchase system, restoration project, and follow-up management of land purchase.

• Journal of the Korea Convergence Society
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• v.10 no.4
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• pp.45-50
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• 2019

This study proposes a method to measure software reliability according to software reliability measurement model to measure software reliability. The model presented in this study uses the distribution of Non - Homogeneous Poisson Process and presents a measure of the software reliability of the presented model. As a method to select a suitable software reliability growth model according to the presented model, we have studied a method of proposing an appropriate software reliability function by calculating the mean square error according to the estimated value of the reliability function according to the software failure data. In this study, we propose a reliability function to measure the software quality and suggest a method to select the software reliability function from the viewpoint of minimizing the error of the estimation value by applying the failure data.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.3
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• pp.695-704
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• 2021

This study aims to determine the effect of changes in learning systems and its effects on students' learning outcomes amid the Covid-19 pandemic. The sample of this study are the students who are in Jakarta, Indonesia. "Non-probability random sampling" technique has been used to select the samples while the sampling method used is "purposive sampling", where criteria are used to select samples. The samples in this study are 200 people taken randomly using Google Form. Concentration ability and learning interest can affect learning outcomes with the mediation of learning comfort and a good learning environment. As well as physical distancing can moderate the effect of concentration ability and learning interest on learning outcomes. The ability to concentrate on improving learning outcomes requires psychomotor improvement. Whereas interest in learning with indicators of learning awareness can improve learning outcomes. A clean environment is a strength in the learning comfort and the community environment can be recommended in the learning environment. The implementation of the restriction of gathering becomes an important point of physical distancing. The other novelties are the learning comfort and the learning environment as mediating variables and physical distancing as moderating variables in one study at a time.