• Journal of Biosystems Engineering
• /
• v.38 no.1
• /
• pp.55-63
• /
• 2013

Purpose: The present study aimed at image processing methods for automatic cell pattern recognition and morphological analysis for tissue engineering applications. The primary aim was to ascertain the novel algorithm of adaptive brightness correction from microscopic images for use as a potential image analysis. Methods: General microscopic image of cells has a minor problem which the central area is brighter than edge-area because of the light source. This may affect serious problems to threshold process for cell-number counting or cell pattern recognition. In order to compensate the problem, we processed to find the central point of brightness and give less weight-value as the distance to centroid. Results: The results presented that microscopic images through the brightness correction were performed clearer than those without brightness compensation. And the classification of mixed cells was performed as well, which is expected to be completed with pattern recognition later. Beside each detection ratio of hBMSCs and HeLa cells was 95% and 92%, respectively. Conclusions: Using this novel algorithm of adaptive brightness correction could control the easier approach to cell pattern recognition and counting cell numbers.

• Journal of Environmental Impact Assessment
• /
• v.22 no.2
• /
• pp.147-156
• /
• 2013

Myanmar(Burma) has been preserved valuable environmental resources because of its political isolation. But recently, Myanmar has moved a capital city(Naypyidaw) at central forest area and it has been urbanized radically since 2005. In this paper, we built multi-temporal land cover map from Landsat images of 1970s to 2012 with ENVI 4.5 software. For a broad approach, administrative district Yamethin which includes Naypyidaw is classified into 3 classes and with only Naypyidaw region is classified with 4-5 classes to analyse specific changes. And with forest cover extracted by Object Oriented Classification, we evaluated forest fragmentation before and after the development using Patch Analyst(FRAGSTATs 3.3) at Yamethin area. For Yamethin area, there were significant forest cover change, 51% in 1999 to 48% in 2012, and for Naypyidaw area, 67% in 1999 to 57% in 2012 respectively. Also landscape indices resulted from Patch Analyst concluded that the total edge, edge density and mean shaped index of forest patches increased and total core area is decreased. It is attributed from land cover change with urbanization and agricultural land expansion.

• Korean Institute of Interior Design Journal
• /
• no.31
• /
• pp.3-11
• /
• 2002

Shopping malls in Seoul become important urban public space where teens and youths as well as the elderly come easily and enjoy thorned environment. This study examines design motifs, structures and effects of theme design of three shopping malls-Lotte World, Coex Mall, and Central City-in Seoul, Korea. The study quotes Lynch`s five image elements-paths, nodes, landmarks, districts, and edges in the shopping malls in order to analyze internal structure of the shopping malls and theme design elements. The theme design of the shopping malls was often used the images of "city parks", "future city", "foreign tourist places", "carnival and festival", and "old towns" to evoke nostalgia of the past and fantasy of the future. The study finds that theme design was emphasized at the area of corridors-path, plazas-nodes and special districts such as movie theater and food courts. The study concludes that theme design in the three shopping malls should consider local(Korean) motifs in design properly and consider educative effects of the design on teens and youths. Thus, theme design of the shopping malls should meet multi-functional roles of the spaces aesthetically and socially, The data and analysis of this study can contribute to improve theme design of shopping malls in Seoul, Korea.ve theme design of shopping malls in Seoul, Korea.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
• /
• v.27 no.1
• /
• pp.263-271
• /
• 1997

The authors diagnosed a 54-year-old male as central mucoepidennoid carcinoma after undergoing clinical, radiological and histopathological examinations. The characteristics were as followed : 1. Clinically, the patient complained of the painless unilateral swelling of the left mandibular molar region and had a pus discharge through the fistula. Painful nodule was palpated on the scalp of the left frontal area and it was regarded as a metastatic lesion. 2. Plain radiographs showed the ill-defined permeative radiolucent lesion. The osteolytic lesions were also detected in the cranial bone, number 9 and 11 ribs, scapula, and vertebral bodies. 3. The mandibular CT and PNS MRI showed the swelling of the left mandible and the enlargement of the several lymph nodes of 1.5 cm in size. 4. Histopathologically, many solid epidermoid type cells were mixed with mucus-secreting cells and they were arranged in duct-like structure. Most of them were epidermoid type, which indicates a high grade tumor. Mucins could be found in mucicamrine staining.

• The Journal of the Korea Contents Association
• /
• v.11 no.5
• /
• pp.466-473
• /
• 2011

The purpose of this study is to analyze the distribution of the building area and find the characteristics of development density where the areas to perform special functions as residential, commercial, and business area in Seoul. As a result of classification of the regions with the component ratio of building area ratio by types, the greater part of Seoul is residential areas and only a small part of Seoul have business function. Contrary to the Kang-Nam business districts, the central business districts have few or no houses. It is concerned that the redevelopment projects, such as New-Town, make Seoul more high- density. The industrial area lost the attractiveness as a resident in spite of businesses or infrastructures. So the industrial area will be the best place for reduce journey-to-work distance if improve housing conditions. As well as management of density, management of use is also required for effective landuse and green-growth city.

• Journal of Korean Society on Water Environment
• /
• v.31 no.6
• /
• pp.680-692
• /
• 2015

A landcover map watershed of downstream reach in the Gyungan stream was made by using the existing land use map and interpreting satellite images and aerial photos. Based on the map, we analyzed land use patterns of this basin. Broad-leaved forest occupied the largest area among landscape elements established in this watershed. The total area of the zone designated as the waterside district by the central government was 4.7 km² , and broad-leaved forest occupied the largest area as 33.9% in this zone. Therefore, the area did not meet the qualifications of riparian zones. Riparian vegetation established in the Gyungan stream watershed was composed of Phragmites communis, Miscanthus sacchariflorus, Salix gracilistyla, Salix koreensis. But terrestrial vegetation elements such as Ambrosia trifida, Ailanthus altissima, Robinia pseudoacacia also appeared in this area. On the other hand, Phragmites japonica, Salix gracilistyla, Salix koreensis, Salix integra, Ulmus davidiana and so on appeared in the riparian zone the reference streams. Differently from the vegetation established on the reference streams, terrestrial vegetation elements appeared frequently in the Gyungan stream watershed. This result would be due to that the Gyungan stream watershed is exposed to excessive human interferences.

• Journal of Korean Society for Atmospheric Environment
• /
• v.5 no.2
• /
• pp.36-41
• /
• 1989

Concentrations of atmospheric asbestos at 5 sites in the central Seoul area, were determined by phase contrast microscopy. The observed numbers of asbestos per liter of air were: maximum 4.51, minimum 0.72 and average 2.20. The direct relationship between asbestos concentration at each sampling site and automobile traffics was not demonstrated. But the more there are automobile traffics, the higher asbestos concentratiof of total fibers is.

• Proceedings of the KOSOMBE Conference
• /
• v.1993 no.05
• /
• pp.141-145
• /
• 1993

To Determine the major factor which causes the accelerated calcification of the severe flexing area of the artificial heart sac, comparative study under well defined in vitro situation were carried out. The results show that the effect of static mechanical stress is not so important. According to the data, change of surface area caused by the applied mechanical stress is one of the important factors of the heavy calcification of the severe flexing area of the artificial heart sac.

• The Bulletin of The Korean Astronomical Society
• /
• v.38 no.2
• /
• pp.73.1-73.1
• /
• 2013

It is believed that the current census of star clusters in the Milky Way is far from being complete, because of high extinction. Taking advantage of recent wide-field infrared surveys (the WISE as well as 2MASS, UKIDSS GPS, and VVV), we search for new star clusters in the central region of the Milky Way (720 $deg^2$-wide area at |1| < $30^{\circ}$ and |b| < $6^{\circ}$). We find 1840 candidates by visual inspection of the WISE images. The spatial distribution of these candidates show a strong concentration along the Milky Way, showing that most of them belong to the Milky Way. Among them, 26 are probably star clusters, considering their morphology, color-magnitude diagrams, and the degree of central concentration of stars. Eighteen of them appear to be very young in the embedded phase, and six of them are considered to be relatively old, showing a developed red giant branch. Implications of the primary results will be discussed.

• Economic and Environmental Geology
• /
• v.11 no.2
• /
• pp.81-88
• /
• 1978

Nearly 300 bottom sediments and 20 box-cores were sampled from the Asan bay. The central portion of the Asan bay is covered by sand, slightly gravelly sand and gravelly muddy sand. Between the central and marginal zones gravelly mud and slightly gravelly sandy mud are characteristically distributed. The gravel population in the sediments seems to be originated from the rocky bottom on the area near the bay because the gravel is angular and composed of the schist and gneiss. The quartz/feldspar ratio is about 3/2. It is considered to be that the amount of feldspar in this bay is much higher than that of any other areas in the Yellow Sea. This is considerd to be comparatively short distance of transport ion of these sediment from the provenance.