• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.19 no.4
• /
• pp.780-786
• /
• 2015

Social media, such as Social Network Service include a lot of spontaneous opinions from customers, so recent companies collect and analyze information about customer feedback by using the system that analyzes Big Data on social media in order to efficiently operate businesses. However, it is difficult to analyze data collected from online sites accurately with existing morpheme analyzer because those data have spacing errors and spelling errors. In addition, many online sentences are short and do not include enough meanings which will be selected, so established meaning selection methods, such as mutual information, chi-square statistic are not able to practice Emotional Classification. In order to solve such problems, this paper suggests a module that can revise the meanings by using initial consonants/vowels and phase pattern dictionary and meaning selection method that uses priority of word class in a sentence. On the basis of word class extracted by morpheme analyzer, these new mechanisms would separate and analyze predicate and substantive, establish properties Database which is subordinate to relevant word class, and extract positive/negative emotions by using accumulated properties Database.

• Tribology and Lubricants
• /
• v.34 no.4
• /
• pp.146-159
• /
• 2018

This paper presents a wear analysis procedure for calculating the wear of journal bearings of a four-strokes and four-cylinder engine operating at a constant angular crank shaft speed during firing conditions. To decide whether the lubrication state of a journal bearing is in the possible region of wear scar, we utilize the concept of the centerline average surface roughness to define the most oil film thickness scarring wear (MOFTSW) on two rough surfaces. The wear volume is calculated from the wear depth and wear angle, determined by the magnitude of each film thickness on a set of oil films with thicknesses lower than the MOFTSW at every crank angle. To calculate the wear volume at one contact, the wear range ratio during one cycle is used. The total wear volume is then determined by accumulating the wear volume at every contact. The fractional film defect coefficient, asperity load sharing factor, and modified specific wear rate for the application of the mixed-elasto-hydrodynamic lubrication regime are used. The results of this study show that wear occurs only at the connecting-rod big-end bearing. Thus, simulation results of only the big-end bearing are illustrated and analyzed. It is shown that the wear volume of each wear scar group occurs consecutively as the crank angle changes, resulting in the total accumulated wear volume.

• KIPS Transactions on Software and Data Engineering
• /
• v.4 no.2
• /
• pp.77-82
• /
• 2015

Big Data technology has been attracted much attention in aspect of fast data processing. Research of practicing Big Data technology is also ongoing to process large-scale structured data much faster in Relatioinal Database(RDB). Although there are lots of studies about measuring analyzing performance, studies about structured data loading performance, prior step of analyzing, is very rare. Thus, in this study, structured data in RDB is tested the performance that loads distributed processing platform Hadoop using Apache sqoop. Also in order to analyze the influence factors of data loading, it is tested repeatedly with different options of data loading and compared with data loading performance among RDB based servers. Although data loading performance of Apache Sqoop in test environment was low, but in large-scale Hadoop cluster environment we can expect much better performance because of getting more hardware resources. It is expected to be based on study improving data loading performance and whole steps of performance analyzing structured data in Hadoop Platform.

• Geophysics and Geophysical Exploration
• /
• v.16 no.4
• /
• pp.234-239
• /
• 2013

The $M_W$ 9.0 thrust-fault earthquake has occurred in the Pacific coast of Tohoku, Japan, on March 11, 2011. We present the detection of the great earthquake and analyze T-waves associated with the main event and two other big aftershocks ($M_W$ > 7) recorded in a hydroacoustic array (H11N) in the Pacific Ocean by performing array and spectral analysis to examine characteristics of T-waves generated from the big events. The complex rupture process of the main event directly influences on the shape of the T-waves, and the peak locates on where T-waves excited from fast rupturing process arrive. We compare the two aftershocks with different fault type and show that the fault type and the source depth change shape and spectral contents of T-waves.

• Journal of Convergence for Information Technology
• /
• v.8 no.1
• /
• pp.161-171
• /
• 2018

This study set out to identify crime vulnerable areas with the GIS spatial analysis technique for the prediction of crimes. Crime vulnerable areas were extracted from the statistics of crimes with the GIS hotspot analysis technique and the inverse distance weighted(IDW) method applied to different crimes according to places and use districts. The scope of surveillance and weight were calculated for each of CPTED surveillance elements including CCTV, streetlamp, patrol division, and police substation. Maps of crime vulnerable areas were overlapped one after another to make a CPTED-based one expressed in four grades(safety, attention, warning, and risk).

• The Korea Journal of Herbology
• /
• v.30 no.4
• /
• pp.51-55
• /
• 2015

Objectives : The purpose of this study was finding out the daily dose of Aconiti Lateralis Radix Preparata and Aconiti Lateralis Radix in Treatise on Cold Damage Diseases.Methods : In order to estimate the daily dose of Aconiti Lateralis Radix Preparata and Aconiti Lateralis Radix, I researched Treatise on Cold Damage Diseases, Synopsis of Prescription of the Golden Chamber, Korean Pharmacoepia 10 and Science of Contemporary Chinese Medicine Product.Results : Daily doses of Aconiti Lateralis Radix Preparata are 1, 2, or 3 pieces and those amount are respectively 1, 2, or 3 Ryang. Common dose of Aconiti Lateralis Radix Preparata is 1 piece, Maximum Dose of it is 3 Pieces and that corresponds with dose of dried herb in Treatise on Cold Damage Diseases. Consider from Sovereign, Minister, Assistant and Courier, the dose of it in Buja-tang and Whyunmu-tang is 3 Ryang. 1 Ryang corresponds with 6.5 g. Aconiti Lateralis Radix is dried without baking so its weight is equal to Aconiti Lateralis Radix Preparata. Daily doses of Aconiti Lateralis Radix are 1 piece or 1 big piece and those amount are respectively 3 or 6 Ryang. Common dose of it is 1 piece.Conclusions : From this study, in Treatise on Cold Damage Diseases, Daily Doses of Aconiti Lateralis Radix Preparata are 1, 2, or 3 pieces(19.5 g, 39 g or 52 g), and that of Aconiti Lateralis Radix are 1 piece or 1 big piece(19.5 g, 39 g). Common Dose of two Herbal Medicine is 19.5 g.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.20 no.3
• /
• pp.153-161
• /
• 2020

Due to the recent development of the 4th industrial revolution, Smart Factories that organically link various technologies such as AI, IoT, Cloud, and Big Data are increasing. Based on this, in the industrial environment where the internal process is controlled automatically, high availability should be secured against the loss caused when the internal process of the Smart Factory is stopped due to the determinism and malicious attack necessary to control the device such as PLC. The research and analysis of industrial network equipment and security equipment used in various industries can improve the efficiency and usability of industrial control systems in national infrastructure and can provide important feedback to build related infrastructure. Therefore, we compared industrial network equipment and security equipment in this paper in a variety of ways and expect to be used as a roadmap for developing technologies for industrial network equipment and industrial security equipment based on the results of this paper.

• Journal of Digital Contents Society
• /
• v.18 no.7
• /
• pp.1427-1434
• /
• 2017

Due to the acceleration of the 4th industrialization, the data around us rapidly increased. Therefore, it is necessary to be able to more easily grasp the nature and meaning of data obtained through data analysis than to collect data, and apply it flexibly to the value judgment of data. Visualization technology is now attracting attention in many fields. Visualization allows the user to more easily grasp the information of the data with graphs, charts, etc. so that the data analysis result can be understood more easily, so that the user can make an immediate judgment and make a quick decision. Among them, there is a high degree of interest in visualization using public data, which is highly useful to users. In this paper, we implemented R - library and R Studio to visualize public data at the installation sites of bicycle storage sites among various software that can express visualization.

• Journal of the Korea Convergence Society
• /
• v.9 no.5
• /
• pp.105-111
• /
• 2018

The purpose of the study was to investigate on educational activity related to oral health contained in teachers guidebook of the Nuri curriculums. Oral health educational activity were analyzed the distribution, form and type, Nuri curriculum related factors contents category and contents. Number of oral health educational activity was 29(1.37%). Activity form was big and small group activity are 15(51.72%), free choice activity are 14(48.27%). Activity type was the highest in the big and small group, with 7(24.13%) talk together and free choice activity was the highest in 4(13.79%) rhythmic region. Nuri curriculum related factors(Five areas) was highest with 22(34.38%) physical exercise health. Based on the results, the oral health professional will participate in teachers guidebook of the Nuri curriculums. The oral health professional will need to reorganize in a more balanced and practical activity.

• Applied Microscopy
• /
• v.34 no.3
• /
• pp.179-184
• /
• 2004

Normal and abnormal morphology of the epididymal spermatozoa in the big white-toothed shrew, Crocidura lasiura were studied with the light and electron microscopy. Normal spematozoa were observed with a few abnormal spermatozoa. This indicates that abnormal morphology is no absolute indicator of infertility. However, the existence of the abnormal spermatozoa is related to infertility. Especially abnormal morphology of the sperm head is definitely associated with infertility. The following types of abnormal head morphology of the epididymal spermatozoa in the wild healthy adults of the C. lasiura were described: 1) Nucleus with lack of condensation of the nucleoplasm 2) Destructed acrosome 3) Folded acrosome and plasma membrane 4) Separation of the acrosome from the nucleus 5) Acrosome with irregular condensation 6) Wrongly located granules of the apical body.