• Journal of the Korea Society of Computer and Information
• /
• v.16 no.2
• /
• pp.257-266
• /
• 2011

Over the society the trial for several systems to be connected with Network has been continued to share information and to make it various. In accordance with such a change, the concept of military warfare conduction has been changing form platform centric warfare in separate combat system based on network centric warfare in network based. We have continuously made an effort that we try to get the goal with efficient system which is linked up with network, but such a study on that one in military system analysis is still slower than the study out of military until now. So this study is searching network influence factor by using military network with application of social network analysis method which is used broadly in the society and the science as well. At this time we search co-relationships between social network and the thing that we can analyse C2 time by effectiveness measurement means. By this study it has value of network influence factor identification for the growing network composition.

• Journal of the Korean Society of Radiology
• /
• v.11 no.7
• /
• pp.647-653
• /
• 2017

The purpose of this study is to provide basic data for policy making by understanding preparation plans and awareness of nuclear accidents and radiation terrorism among police officers in the vicinity of nuclear power plants. 221 police officers working in Busan metropolitan city were surveyed and their perception of disaster response was analyzed by organizational structure, command ability, and opinion management. As a result, there was no significant difference in disaster response perception by gender and command class (p>.05). There was statistically significant difference in the ability of command in age and ability according to work experience. As a result of the correlation analysis, there were statistically significant correlations among the three items of organizational structure perception, command ability, and opinion management (+0.5) (p<.01). Overall, it was positive for the police system, and it was well aware of the police work in case of radiation accidents and terrorist attacks. The purpose of this study is to provide basic data for policy making by understanding the coping and awareness of nuclear accidents and radiation terrorism among police officers in the vicinity of nuclear power plants.

• Journal of Veterinary Clinics
• /
• v.22 no.4
• /
• pp.302-308
• /
• 2005

This study was performed to examine the absolute skin temperature and temperature difference $({\Delta}T)$ between the left and the right, the upper and the lower parts on the back of dog and to investigate the clinical usefulness of infrared thermography as diagnostic or prognostic aid on experimental spinal cord compression by using Digital Infrared Imaging System. In normal dogs, symmetrical and contouring patterns were observed in thermogram. The skin temperature difference was not significant between the left and the right, the upper and the lower parts on the back. In spinal cord compressed dog, there was symmetrical temperature reduction pattern around lesion. Patterns of ${\Delta}T$ between thoracic and lumbar portions were remarkable and showed the tendency to return to normal after 4 weeks of operation. It is considered that infrared thermography is a useful diagnostic and prognostic aid for spinal cord injury in dogs.

• Journal of the Korean Wood Science and Technology
• /
• v.43 no.6
• /
• pp.798-803
• /
• 2015

This study was conducted to predict the effect of door opening in wooden cultural heritages (WCHs) on their conservation environment. For this prediction, measured relative humidity (RH) and surface wood moisture content (MC) of inner part of wood columns in open wooden building and neighboring closed wooden building were compared with minimum RH, including the duration of minimum RH, and MC required for spore germination and resultant growth of wood-degrading fungi reported in some literatures. Moisture conditions, namely RH of inside wooden building and MC of wood was unsuitable for decay and sap-stain fungi all the year round; however, moisture conditions during summer season was suitable for spore germination and resultant growth of surface mold fungi, regardless of door opening. When compared, the duration of minimum (75%) or higher RH and the number of wood columns with MC level greater than the minimum MC (15%) during summer season, the surface mold related to the conservation environment of inside wooden building was somewhat better in open building than in closed building. Rather, doors should be opened in closed building for reducing indoor RH as a necessary measure during summer season when outdoor RH is high.

• Journal of the Korean Society of Fisheries and Ocean Technology
• /
• v.23 no.4
• /
• pp.169-176
• /
• 1987

The response of file Navodon modestus (GUNTHER) to attraction lamps in line and an adaptation lamp was carried out in the experimental water tank (550L$\times$58W$\times$73H cm). The rate of attraction was investigated in accordance with the intervals of time lighted on and off (1, 5, 10 minute), the intensities of adaptation lamp (1, 10, 20 W) and the two conditions of light stimulus which were the movement of lighted zone (NORMAL) and decrement of lighted zone (NEGA). The results are as follows: 1. Under Normal condition, the variation coefficients which show variation of attraction rate according to the time intervals and the intensities of adaptation lamps were 16.78% (1 min.), 9.71% (5 min.), 8.96% (10 min.), 9.71% (1 W), 15.00% (10W) and 21.08% (20 W) respectively, and attraction rates of the last section was 80.0% (1 min.), 86.0% (5 min.), 85.0% (10 mim.), 86.0% (1 W), 78.7% (10W) and 72.7% (20 W) respectively. 2. Under Nega condition, the file fish was almost distributed all in the illuminated sections, and the majority of the distribution section was adjacent to the extinguished section regardless of the time intervals and the adaptation lamps. 3. Under Nega condition, the variations of attraction rate in the last section became L type, and the attraction rates, when the rest except for the last attraction lamp was extinguished, were 96.7% (1 min.), 100% (5 min.), 96.0% (10 mim.), 100% (1 W), 100% (10W) and 88.0% (20 W) respectively.

• Journal of forensic and investigative science
• /
• v.2 no.1
• /
• pp.23-31
• /
• 2007

Apartments are built in small countries to accommodate densely populated cities and maximize urbanization. Many apartment complexes have been built in recent reconstruction or redevelopment projects. An increase in crime has resulted due to residents living in a narrow space. Larceny is the most commonly reported crime in apartment complexes. Apartments can be classified as stairway, hallway, or plane surface. This study compares and analyzes the frequency of theft by apartment type to assist in creating a safer residential space. In America and England, scholars studied to make a safer residential space, and have applied the theory of 'the Defensible Space' and 'Crime Prevention Through Environmental Design(CPTED)' since 1970s. Korean apartment design now reflects CPTED in new apartment construction. In this study, 12 apartment complexes were selected in Changwon city to conduct analysis of theft in selected complexes. The study will cover housing invasion theft, motorcycle and car theft and snatching. The most frequency larceny is motorcycle and car theft, the second is housing invasion theft, and the least frequent is snatching. More residents' motorcycles and cars are damaged in a hallway style apartment. More frequently inhabitants have their possessions snatched on a stairway form. 1) When we build new apartment complexes, we must plan to improve territoriality and enhance a natural surveillance by reinforcing dwellers' relationship. Through planning we can prevention the larceny in apartments.

• Journal of the Economic Geographical Society of Korea
• /
• v.22 no.4
• /
• pp.458-471
• /
• 2019

DMSP-OLS nighttime satellite imagery could be used to derive the sum of lights (SOL) and built-up area, and the two indices have been widely employed to make the estimation of socio-economic variables and the dynamics of urban developments. Considering it, this research investigated the spatiotemporal patterns of economic growth and urbanized area in Jilin Province, China, using DMSP-OLS data for a time span between 1992 and 2012. This study found the SOLs of both the province and most cities to tend to grow during the period. While SOL-weighted centroids' means moved towards northwestern direction, urban-area centroids' means followed the trend of south-eastern migration. These directional patterns could be associated with the Northeast Revitalization Plan of Chinese governments. Nonetheless, a future study will need to consider SNPP VIIRS DNB imagery in order to overcome temporal limitation of DMSP-OLS data. In addition, it is also necessary to estimate socio-economic indices, e.g., growth regional domestic product, using a regression model developed with correlation relationship between economic statistics ad SOL.

• Journal of the Korean Geotechnical Society
• /
• v.28 no.10
• /
• pp.79-88
• /
• 2012

Small amount of salt and various microorganisms are contained in natural soils or clays near the shore. In this study, most common clay minerals such as kaolinite and bentonite are used to evaluate the effect of salt and microorganism on liquid and plastic limits. The effect of time after mixing clays with water was also investigated for the consistency limits of clays. The test was conducted immediately, 1 day, or 7 days after mixing soils. For liquid limit tests two different test methods were used, the percussion cup method by Casagrande and the fall cone method. When sea water or microbial solution was used for mixing soils rather than distilled water, the liquid limit of kaolinite decreased by 6-15% and that of bentonite further decreased up to 37-53%. The liquid limit obtained from the fall cone method was approximately 10% for bentonite and 20% for kaolinite, which are higher than those from the percussion cup method. The effect of time on liquid and plastic limits was significant for those tested immediately or 1 day later but the values obtained after 1 day or 7 days did not vary a lot, regardless of soils, mixing waters or test methods.

• Journal of the korean academy of Pediatric Dentistry
• /
• v.40 no.4
• /
• pp.314-320
• /
• 2013

With a prevalence rate of 0.01%, the presence of eruption disturbances of mandibular first molar has rarely been in populations. Eruption disturbances of permanent molars have been usually manifested as impaction, primary retention, and secondary retention. The treatments of eruption disturbances are carried out by: periodic observation; surgical exposure; forced eruption after surgical exposure; forced eruption with luxation; surgical repositioning; and extraction. This case report show successfully erupted mandibular first molars by various treatment methods on five patients diagnosed with impaction, primary retention, and secondary retention, respectively. Eruption disturbances of the mandibular first molar can be properly diagnosed with impaction, primary retention, and secondary retention by clinical and radiographic examination at normal eruption time of the mandibular first molar. The treatment should be done synthetically, considering eruption state of affected tooth, the relationship between the affected tooth and the adjacent or opposite tooth, the patient's age, treatment compliance, and economic state.

• Journal of the korean academy of Pediatric Dentistry
• /
• v.40 no.3
• /
• pp.149-158
• /
• 2013

The purpose of this study was to evaluate the shape and impacted pattern of mesiodens and associated complications using three dimensional images produced by dental CBCT. This study was based on the CBCT (CB Mercury, Hitachi, Tokyo, Japan) radiographic view of 280 pediatric patients who visited the Department of Pediatric Dentistry at the Chosun University Dental Hospital with the chief complain of mesiodens during between 2007 and 2012. Impacted mesiodens occurs more frequently in boys than in girls, the ratio being approximately 3.3:1 and most cases were observed between 6 and 8 years of age. The number of mesiodens per patient was 1.38. Majority of the mesiodens were conical (79.5%) in shape and inverted (48.6%) in direction. The mesio-distal position of mesiodens were the most common in middle sector (81.8%), vertical level were the most common near cervical (60.3%), and labio-palatal position were the most common at palatal side of the dental arch (73.8%). 47.5% of mesiodens had complications and common complications associated with mesiodens were displaced tooth and delayed eruptions. The shape, vertical level, and labio-palatal position of mesiodens had correlations with complications. CBCT appears to be an excellent diagnostic tool, providing three dimensional information and accurate images, for diagnosis of impacted mesiodens.