• The Transactions of the Korea Information Processing Society
• /
• v.1 no.1
• /
• pp.14-22
• /
• 1994

This paper proposes two Bayes estimators and their evaluation algorithms of the software reliability at the end testing stage in the Smith's Bayesian software reliability growth model under the data prior distribution BE(a, b), which is more general than uniform distribution, as a class of prior information. We consider both a squared-error loss function and the Harris loss function in the Bayesian estimation procedures. We also compare the MSE performances of the Bayes estimators and their algorithms of software reliability using computer simulations. And we conclude that the Bayes estimator of software reliability under the Harris loss function is more efficient than other estimators in terms of the MSE performances as a is larger and b is smaller, and that the Bayes estimators using the beta prior distribution as a conjugate prior is better than the Bayes estimators under the uniform prior distribution as a noninformative prior when a＞b.

• Journal of the Korea Society of Computer and Information
• /
• v.24 no.11
• /
• pp.201-208
• /
• 2019

In the phono-sapiens era of the intelligence information society, most business activities are increasingly dependent on networks and information systems. SMEs, which occupy the majority of Korean companies, are increasingly possessing the value and technology of their information assets, and their ability to protect core technologies that are the driving force of corporate growth will be the most important competitiveness of enterprises. Accordingly, the Ministry of Science and ICT and the Korea Internet & Security Agency(KISA) provides a foundation for minimizing the damage from cyber threats such as hacking and information leakage by evaluating the current information protection level of SMEs and enhancing information protection capability by supporting a high level of customized information protection consulting. In this study, we analyze the effectiveness of information protection based on the results of KISA SMEs consulting. In addition, by identifying problems and limitations derived from SMEs information protection consulting results, SMEs should propose measures to improve information security of SMEs that can manage information protection management system more efficiently and effectively.

• Journal of the Korea Society of Computer and Information
• /
• v.27 no.2
• /
• pp.61-69
• /
• 2022

As the delivery industry grew around the restaurant industry along with the COVID-19 situation, the number of delivery workers increased significantly. Along with that, new forms of delivery using personal mobility (PM) also emerged and two-wheeled or PM-related accidents are steadily increasing. This study manufactures a PM's driving analysis device to establish a safe delivery monitoring environment. This system was constructed to process data collected from the driving analysis device and through a cloud server, which would recognize and record special situations (acceleration/deceleration, speed bump) that could occur during the PM's driving situation. As a result, the angular speed, acceleration, and geomagnetic values collected from the IMU in the device were able to determine whether to drive, drive on the sidewalk, and drive on the speed bump. This technology was able to achieve approximately 1600 times more driving information storage efficiency than conventional image-based recording devices.

• Journal of Digital Convergence
• /
• v.20 no.3
• /
• pp.131-143
• /
• 2022

Focusing on FinTech keywords, this study is analyzing newspaper articles and Twitter data by using text mining methodology in order to understand trends in the industry of domestic digital financial service. In the growth of FinTech lifecycle, the frequency analysis has been performed by four important points: Mobile Payment Service, Internet Primary Bank, Data 3 Act, MyData Businesses. Utilizing frequency analysis, which combines the keywords 'China', 'USA', and 'Future' with the 'FinTech', has been predicting the FinTech industry regarding of the current and future position. Next, sentiment analysis was conducted on Twitter to quantify consumers' expectations and concerns about FinTech services. Therefore, this study is able to share meaningful perspective in that it presented strategic directions that the government and companies can use to understanding future FinTech market by combining frequency analysis and sentiment analysis.

• The Journal of the Convergence on Culture Technology
• /
• v.10 no.3
• /
• pp.901-907
• /
• 2024

The desire to be beautiful naturally focuses on aesthetics, and the beauty industry is growing significantly accordingly. Among them, art makeup is developing in the beauty field as a creative and experimental art field that breaks away from the fixed framework centered on color and expression. Art makeup is a field that requires research on a new artistic form of art makeup that applies formative principles through design ideas based on integrated arts such as fashion, architecture, and art according to formative principles. Formative principles were classified into balance, unity, emphasis, and rhythm, and practical cases based on his applied integrated arts were divided into landscaping, architecture, flowers, painting, fashion, and interior design, and art makeup design using formative principles was analyzed. Accordingly, we aim to contribute to the development of new designs by explaining how makeup design forms that apply formative principles are being applied in the field of art makeup, exploring expansion into creative areas, and providing academic theoretical foundations and basic materials for the development of art makeup.

• Economic and Environmental Geology
• /
• v.51 no.3
• /
• pp.279-289
• /
• 2018

With the launch of the new government in 2017, National Planning and Advisory Committee (NPAC) announced the five-year plan for the government administration and the 100 national tasks. The Ministry of Science and ICT (Information & Communication Technology) (MSIT) and other government agencies issued work plans for 2018, including R&D plans. Analyzing the changes in government policy will be a major task of public research and development institutions. This study analyzed the changes of the R&D policy of the new government and the R&D policy direction and strategic plan of the government departments related to the geoscience and mineral resources in 2018. The results of the analysis are as follows: 1) to lead the innovation growth through the 4th industrial revolution, 2) to supply clean energy and to cope with climate change in the environment and energy field, 3) to improve the quality of life through problem solving in the life of the people and disaster prevention. Considering the investment direction of the government, it is necessary to lead the geoscience and mineral resources R&D to solve problems of the society and to grow by the science and technology.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.12 no.4
• /
• pp.368-373
• /
• 1983

This study was designed to determine amino acid composition of silkworm larvae protein and to evaluate its nutritional value by rat experiment. Diets were divided into 5 groups; casein ($D_1$), soybean protein ($D_2$), soybean protein+20% silkworm larvae ($D_3$), soybean protein+40% silkworm larvae protein ($D_4$), and silkworm larvae protein ($D_5$). The growth rate, protein efficiency ratio, weight of organs, hematology, and the content of total serum protein and albumin were studied. The amino acid composition of silkworm larvae protein was comparable to the FAO provisional scoring pattern. The protein was especially high in the amount of lysine and methionine indicating that it could be a good supplemental effect for cereals and beans. Growth rate and protein efficiency ratio of silkworm larvae protein were better than soybean protein and these were increased by the addition of silkworm larvae protein. The weight of liver and spleen from silkworm larvae protein group were also higher than soybean protein group and RBC, WBC, Hct and Hb content of 5 groups tested were within the normal ranges. The contents of total serum protein and albumin from soybean protein group were increased by addition of silkworm larvae protein. From the results obtained, it could be stated that the quality of soybean protein might be improved by silkworm larvae protein.

• Journal of Korean Society of Forest Science
• /
• v.34 no.1
• /
• pp.1-14
• /
• 1977

These studies were carried out to know the variation of morphological tree forms, needles, cotyledons, seed characters and top height growth of seedlings of Pinus koraiensis S. et Z. by populations in Mt. Jiri. The results are summarized as follows: 1. It was observed that the characteristics of length, needles of serration density of needles, percentage of full seeds length, of seeds, thickness, of seeds length of cotyledons, width of cotyledon, numbers of the stomata line in cotyledons and the top height growth of seedlings were significantly different in individual trees and populations. 2. The characteristics of branch angle specific gravity of wood and resin canal numbers of cotyledons were significantly different in populations. 3. It was that the characteristics of numbers of stomata line, width, of seeds weight, of seeds serration density of cotyledons, numbers of cotyledons were significantly different in individuals. 4. The resin canals of needles showed three principle resin canals in individual trees and population, and the coefficients of variation were not shown in individual trees and populations. Stem forms showed to be a straight form with all populations. 5. The characteristics of cotyledons had generally higher tendency than the characteristics of needles in comparison with coefficience of variation.

• Korean Journal of Poultry Science
• /
• v.44 no.2
• /
• pp.123-134
• /
• 2017

This study was conducted to establish new synthetic lines of Korean Native Chicken. We performed $5{\times}5$ diallel crossings with GPS lines of Korean Native Chicken for the selection of parent stock. The production traits including viability, body weight, age at first egg laying, egg weight, hen-day egg production, and hen-housed egg production were measured and analyzed for 25 crosses with 1,157 hens. The heterosis effects of these traits were also estimated. The results showed that the average survival rate during laying periods was 67.7% in the pure lines and 77.1% in the crosses. The 25 cross combinations were shown to be distinctly divided into three groups according to body weight; nine crosses in the high-weight group, 12 crosses in the medium-weight group and four crosses in the light-weight group. The average body weight at 12 weeks of age was $1,873.8{\pm}43.0g$ in the high group, $1,595.4{\pm}56.6g$ in the medium group and $1,152.7{\pm}24.7g$ in the light group, and $1,560.2{\pm}339.3g$ in the pure lines and $1,640.9{\pm}213.7g$ in the crosses. In terms of egg production performance, the age at first egg laying was $139.7{\pm}4.9$ days in the pure lines and $135.8{\pm}5.1$ days in the crosses. The average egg weight was $52.3{\pm}1.6g$ in the pure line and $53.0{\pm}1.6g$ in the crosses. The average hen-housed egg production from 20 to 40 weeks was $58.3{\pm}12.9$ eggs in the pure line and $69.2{\pm}10.4$ eggs in the crosses. The average heterosis effect was 16.9% for survival rate, 5.4% for body weight at 12 weeks, -2.7% for age at first egg laying, 1.3% for egg weight, and 14.3% for hen-day egg production. Generally, the heterosis effect for viability and egg production traits was higher than that for growth trait. On the basis of these results, it is expected that the selection of the HF combination, which had excellent growth performance, is the most desirable as the paternal strain, and the selection of GW and FW combinations, which had excellent laying performance, are preferable as the maternal strain.

• Journal of agriculture & life science
• /
• v.50 no.5
• /
• pp.139-152
• /
• 2016

The comparative in vitro and in situ analysis were conducted to evaluate the rumen degradability and physical structure of domestic roughage as rice straw, timothy, alfalfa, wormwood and green tea. The feedstuffs incubated with rumen fluid and was used to determine gas production, microbial growth rate and pH changes in an in vitro experiment. The gas production was increased during incubation times and was significantly(p<0.05) lower in green tea than other feedstuffs. The microbial growth rate in the feedstuffs was increased during incubation times. However, microbial growth rate was significantly(p<0.05) lower in wormwood and green tea than other feedstuffs. Ruminal pH was decreased during incubation times, and timothy was the lowest, and rice straw was the highest among feedstuffs. The disappearance rate of dry matter(DM) and crude protein(CP) in all feedstuffs were increased during incubation times and green tea was the highest(p<0.05) compared with other feedstuffs. In effective degradability, when rumen out-flow rate was assigned to 4%, wormwood showed the highest in DM, and alfalfa was the highest in CP. Whereas, green tea was the highest in both in situ DM and CP degradability. Many cilia on the surface and stoma of wormwood and stoma in green tea were observed by scanning electron microscopy. Microbes breaked down the cilia at the beginning and then degraded the surface in wormwood. In case of green tea, microbes attached to stoma. Therefore, wormwood and green tea have a potential value as ruminal feed stuffs.