• KSCE Journal of Civil and Environmental Engineering Research
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• v.32 no.6D
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• pp.557-563
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• 2012

The purpose of this study is to analyze the spatial structure of Mega-Economic Region particularly in Daegu using Freight Origin-Destination (O/D) Data which comes from KTDB. To diagnose the appropriate separation of Regions, the mean of three standardized indices was calculated. The indicates measured are Freight Occupancy Ratio (FOR), Freight Dependancy Ratio (FDR), Scale Parameter (SP), respectively. The result of analysis showed that FOR FDR SP indicators gave effective explanation about characteristic of Regions depending on Freight moving patterns. Especially, Gyeongsan and Gumi had high correlation Regions with FOR FDR indicator. Also, the major industries of Daegu Metropolitan based on the SP indicator are Chemical and Metal machinery industry.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.26 no.2
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• pp.111-116
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• 2008

The study installed non metric camera which was a 10 Mega Pixel camera in RC Helicopter. And the study controlled images hotographed in air on land, considering their overlap. The study could express DEM by abstracting TIN from the acquired images through image registration. Also, the study compared and examined accuracy between reference point and check point observed by Total Station which was a conventional type of survey. As the results, the study could get errors of $-0.194{\sim}0.224\;m$ on X axis, $-0.088{\sim}0.180\;m$ on Y axis and $-0.286{\sim}0.285\;m$ on Z axis. Expressing an error's RMSE in the checkpoint, the study could get of 0.021388 m on X axis, 0.015285 m on Y axis and 0.041872 m on Z axis. It is judged that the above photographing and analyzing technique are better than the existing Total Station to acquire more terrain elevation data.

• Special Issue of the Society of Naval Architects of Korea
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• 2009.09a
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• pp.97-106
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• 2009

Many production methods are tried to enhance the productivity efficiency. Parallel connected floating cranes are one of the examples to lift mega-blocks quickly and efficiently. However, a general operation manual to operate parallel connected floating cranes and a method to consider risks during lifting operation are not confirmed. And if each floating crane is operated by itself, it is very hard to cooperate. Therefore, Synchronized operation system is installed to control parallel connected floating cranes simultaneously and to be informed of each floating cranes data. And weighting factor is calculated by considering all hazards during the operation and the general operation manual is confirmed based on the factor. This paper introduces the procedure for lifting operations by parallel Connected Floating Cranes using synchronized operation system, and its applications to lifting operation of a heavy cargo such as barge lifting test, floating dock installation and 900 ton goliath crane replacement operation, etc.

• Proceedings of the Materials Research Society of Korea Conference
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• 2003.03a
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• pp.131-131
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• 2003

Surface micromachined uncooled IR detector with the optimized VOx bolometric layer was fabricated based on sandwich structure of the V$_2$O$_{5}$V/V$_2$O$_{5}$. In order to improve the detectivity of the IR detector, we optimized a few factors in the viewpoint of bolometric material. Vanadium oxide thin film is a promising material for uncooled microbolometers due to its high temperature coefficient of resistance at room temperature. It is, however, very difficult to deposit vanadium oxide thin films having high temperature coefficient of resistance and low resistance because of process limits in microbolometer fabrication. In order to increase the responsivity and decrease noise, we increase TCR of bolometric material and decrease room temperature resistance based on the sandwich structure of the V$_2$O$_{5}$V/V$_2$O$_{5}$ by conventional sputter. By oxygen diffusion through low temperature annealing of V$_2$O$_{5}$V/V$_2$O$_{5}$ in oxygen ambient, various mixed phase vanadium oxide was formed and we obtained TCR in range of-1.2 ~-2.6%/$^{\circ}C$ at room temperature resistance of 5~100k$\Omega$.mega$.

• Journal of Navigation and Port Research
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• v.32 no.5
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• pp.369-377
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• 2008

Interest in high productivity and streamlined operation is growing amid a heated competition between ports and mega size vessel oriented operation. It becomes clear that terminals that operate YT(Yard Tractor) for transportation in container yard have less efficiency in operation and cost comparing terminals functioning AGV(Automated Guided Vehicle) system. To offset disadvantages arising out of YT operations, continual efforts (e,g YT pooling operation) were taken place for the last decade, but the result has not been fruitful; YT pooling operation still has a problem in that it cannot read individual YT's actual location. This study suggests 'YT dynamic operation model'- a practical application of RTLS(Real Time Location System) technology which will solve YT pooling operation problems.

• Proceedings of the Korean Society for Bioinformatics Conference
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• 2003.10a
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• pp.183-192
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• 2003

With the availability of complete whole-genomes such as the human, mouse, fugu and chimpanzee chromosome 22, comparative analysis of large genomes from cross-species at varying evolutionary distances is considered one of a powerful approach for identifying coding and functional non-coding sequences. Here we describe a fast and efficient global alignment method especially for large genomic regions over mega bases pair. We used an approach for identifying all similarity regions by HSP (Highest Segment Pair) regions using local alignments and then large syntenic genome based on the both extension of anchors at HSP regions in two species and global conservation map. Using this alignment approach, we examined rearrangement loci in human chromosome 21 and chimpanzee chromosome 22. Finally, we extracted syntenic genome 30 Mb of human chromosome 21 with chimpanzee chromosome 22, and then identified genomic rearrangements (deletions and insertions ranging h size from 0.3 to 200 kb). Our experiment shows that all jnsertion/deletion (indel) events in excess of 300 bp within chimpanzee chromosome 22 and human chromosome 21 alignments in order to identify new insertions that had occurred over the last 7 million years of evolution. Finally we also discussed evolutionary features throughout comparative analyses of Ka/ks (non-synonymous / synonymous substitutions) rate in orthologous 119 genes of chromosome 21 and 53 genes of MHC-I class in human and chimpanzee genome.

• Archives of design research
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• v.18 no.2 s.60
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• pp.283-292
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• 2005

Recently automotive markets are on the way into maturing status with the mega merger between makers which brought equalizations of technology and upgrade of overall performance of vehicles. And the needs of automobile also changed into replacement buying from the entry buying. For the reason why it is the recent trend which has more importance on the software oriented element such as the sane design of vehicles than the hardware like the mechanical elements. This changing characteristics of market which requires more creativity and finished style treatment on an automotive design demand the concept of shape grammar for conducting shape on the macroscopic view. In this research the possibility has been observed to use the body proportion as the concept of the shape grammar for analyzing the relations between the form, sign, and perception as a basic principle of organizing shapes.

• Health Policy and Management
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• v.28 no.2
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• pp.107-118
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• 2018

Background: The purpose of this study was to investigate the estimated proportion for influenza vaccination and to identify factors associated with influenza vaccination in Korean diabetic patients. Methods: Data from the fourth, fifth, and sixth (except for 2013) Korea National Health and Nutrition Examination Survey (n=3,726) was used. A chi-square test was performed to investigate the estimated proportion for influenza vaccination, and a multiple logistic regression analysis was used to identify the factors associated with self-reported influenza vaccination. Results: In men, 28.8% of diabetes patients 30-64 years of age, and 76.1% of elderly (over 65 years of age) diabetes patients received influenza vaccination. In women, 37.7% of diabetes patients 30-64 years of age, and 78.4% of elderly diabetes patients received influenza vaccination (p<0.0001). The determinants of influenza vaccination were marriage, hypertension (odds ratio [OR], 1.55; 95% confidence interval [CI], 1.07-2.24), residence within a mega city, unemployment (OR, 3.94; 95% CI, 1.24-12.54), and exercise via (weekly) walking for diabetic men; and hypertension (OR, 1.71; 95% CI, 1.16-2.52), chronic disease (OR, 1.81; 95% CI, 1.08-3.02), and exercise via walking (OR, 2.65; 95% CI, 1.49-4.73) for diabetic women. Conclusion: Influenza vaccination remains relatively low in young diabetic patients. It is necessary to recommend vaccination to young diabetic patients, and to devise other strategies to improve vaccination.

• Clinical and Experimental Pediatrics
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• v.57 no.2
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• pp.75-78
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• 2014

Purpose: This study aimed to investigate the clinical features of macrocephaly at birth in Korea using ultrasonography. Methods: We retrospectively investigated the medical records of full-term birth neonates in Cheil General Hospital & Women's Healthcare Center from January 2000 to June 2012. The following parameters were recorded and analyzed: gestational age, sex, birth weight, height, occipitofrontal circumference (OFC), physical examination, perinatal problems, and ultrasonography results. Macrocephaly was diagnosed when the OFC was greater than two standard deviations, based on the 2007 Korean National Growth Charts. Results: There were 75 neonates with macrocephaly at birth (52 boys and 23 girls), with a mean OFC of $38.1{\pm}0.49cm$. A comparison of the birth weight and height with the OFC value showed that height was correlated with OFC (r=0.35) but birth weight was not correlated with OFC (r=0.06). There were no remarkable findings in 56 cases (75%). Germinal matrix hemorrhage was identified in 10 cases (13%). An enlarged cerebrospinal fluid space was found in 5 cases (6.7%). There were 3 cases of mega-cisterna magna (4%), 1 case of ventriculomegaly, and 1 case of an enlarged interhemispheric space (6 mm) among these patients. In addition, a choroid plexus cyst was seen in 1 case. Mineralizing vasculopathy in both basal ganglia with no evidence of congenital infection was found in 2 cases and an asymptomatic subarachnoid hemorrhage was found in 1 case. Conclusion: Our results indicate that macrocephaly at birth has benign ultrasonography findings and shows a pattern of male dominance.

• Computers and Concrete
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• v.19 no.1
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• pp.7-17
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• 2017

In Chinese Design Codes, for super high-rise buildings with complex structural distribution, which are regarded as code-exceeding buildings, elasto-plastic time history analysis is needed to validate the requirement of "no collapse under rare earthquake". In this paper, a 117-story super high-rise building is discussed. It has a height of 597 m and a height-width ratio of 9.5, which have both exceeded the limitations stipulated by the Chinese Design Codes. Mega columns adopted in this structure have cross section area of about $45m^2$ at the bottom, which is infrequent in practical projects. NosaCAD and Perform-3D, both widely used in nonlinear analyses, were chosen in this study, with which two model were established and analyzed, respectively. Elasto-plastic time history analysis was conducted to look into its seismic behavior, emphasizing on the stress state and deformation abilities under intensive seismic excitation.From the comparisons on the results under rare earthquake obtained from NosaCAD and Perform-3D, the overall responses such as roof displacement, inter story drift, base shear and damage pattern of the whole structure from each software show agreement to an extent. Besides, the deformation of the structure is below the limitation of the Chinese Codes, the time sequence and distribution of damages on core tubes are reasonable, and can dissipate certain inputted energy, which indicates that the structure can meet the requirement of "no collapse under rare earthquake".