• The KIPS Transactions:PartD
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• v.10D no.1
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• pp.167-174
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• 2003

Today in Korea, various types of B2B or B2C businesses are carried out on the Internet and the catalog information is the molt important factor to make customers purchase the product. However, no case can be found where information is shared between the business partners, more specifically, each catalog supplier possesses data that are incompatible with others. Though the e-business market has rapidly expanded, it is still difficult for businesses to attract buyers unless an integrated system is provided for more fast and convenient B2B businesses. Such a systematic and integrated catalog system is highly demanded along with current database management system Therefore, this study suggests the E-Catalog system consists of a fixed and standardized catalog system offering product information and a network-based architecture offering products to customers through a search system. The proposed system also supports CRM (Customer Relation Management).

• The KIPS Transactions:PartD
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• v.10D no.1
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• pp.77-84
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• 2003

Experts work teams generally agree that small teams are better than large teams for getting things done. Also, always aim for the lowest practical team size. But what does "small" mean\ulcorner We Introduce to productive metrics such as project delivery rate (PDR) and speed of delivery (SOD) for decision criteria of ideal team size. The experimental is based on the analysis of 300 project data. These data sets are divide in two subgroups. One is a development project ; the other is a maintenance project. As a result of experimental in two subgroup, we come to the conclusion that the molt successful projects has small teams indeed staffed with maximum five persons. This paper presents ideal team size in order to provide information that can be used as a guide in selecting the most practical and productive-based team size for a software development project.t project.

• Korean Journal of Pharmacognosy
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• v.47 no.3
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• pp.197-203
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• 2016

Decursin is a major component of the root of Angelica gigas(Umbelliferae), which has been traditionally used in Korea as a tonic and to treat anemia, hemiplegia, and women's diseases. The objective of this study is to identify the anti-cancer mechanism induced by decursin on apoptosis of human leukemia and lymphoma cells. Cytotoxicity of decursin on U937, HL-60, MOLT-4, THP-1 cells showed the significant effects. First of all, $IC_{50}$ of decursin on four cell lines was 27.1, 32.4, 17.4, $15.1{\mu}M$, respectively. So $IC_{50}$ in THP-1 cells was the smallest among 4 cell lines treated with decursin($15.1{\mu}M$). In order to understand the apoptosis-mechanism by decursin, we examined the gene expression of bcl-2(anti-apoptotic), bax(pro-apoptotic) and p53(tumor suppressor)after treating the THP-1 cells with decursin(10, 50 and $100{\mu}M$). It was found bcl-2 gene was decreased dose dependently, the expression level of bax gene of THP-1 cells treated with $100{\mu}M$ of decursin was about 3 times higher than those of control, and p53 gene was increased In the same concentration($100{\mu}M$), p53 gene was increased dose dependent manner. In protein express, bcl-2 and p53 protein showed a tendency to decrease. bax was increased about 4 fold. Therefore decursin is a useful chemotherapeutic agent against leukemia.

• Korean Journal of Microbiology
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• v.37 no.4
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• pp.294-298
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• 2001

Highly effective polymerase chain reaction (PCR) often brings about false positivity caused by contamination of the sample with target nucleic acids. To solve this problem, in situ PCR (ISPCR) has been developed and applied onto various tissue sections and suspension cultures. With combination of PCR and in situ hybridization, this method amplifies the nucleic acid targets in situ and detect the amplified products inside the cells over the background of various cell types. In order to amplify the nucleic acid targets inside the cells, permeabilisation of a sample is required for the entry of amplification reactants into a cell. Treatments of a sample for the purpose allow not only the entry of reactants into the cell but also the exit of amplification products out of the cell. As a means to reduce the leakage of the amplification products, two methods were applied to suspension cultures of HIV-infected Molt/LAV and U 1.1 cells, in which modified, tailed primers produced long linear amplificants whereas biotinylated dUTP instead of dTTP did bulky products.

• Applied Microscopy
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• v.42 no.2
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• pp.77-86
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• 2012

The morphological and histologic differentiation of the central nervous system (CNS) in the wolf spider Arctosa kwangreungensis with respect to postembryonic development are studied using light and scanning electron microscopes. The organization of CNS which consisted of supraesophageal ganglion (SpG) and subesophageal ganglion (SbG) are established prior to the postembryo stage. The brain of first instar spiderling after a molt of the postembryo is also made up of supraesophageal ganglion and subesophageal ganglion. Although development of the optic nerve and optic lobe in SpG are not completed during the postembryoic stage, completion of whole neural system resemble to that of adult are established during the second instar stage. In particular, optic gangalion is developed from the undifferentiated cell clusters of the SpG, moreover four pairs of appendage ganglia and another pairs of abdominal ganglia are produced from the SbG. Nerve cells of the most developing stages are composed of typical monopolar neur1ons, and total three types of neurons can be identified through the histological and morphological basis of present study. These cell clusters are differentiated into neurons and grow dendritic fibers according to further development of the CNS.

• Elastomers and Composites
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• v.38 no.4
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• pp.295-302
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• 2003

The amount of shrinkage of injection molded parts is different from operational conditions of injection molding such as injection temperature, injection pressure and mold temperature, and mold design such as gate size. It also varies depending on the presence of crystalline structure in resins. In this study, part shrinkage was investigated for various operational conditions and resins. Poly(butylene terephthalate) (PBT) for crystalline polymer, and polycarbonate (PC) and poly(methyl methacrylate) (PMMA) for amorphous polymers were used. Crystall me polymer showed higher part shrinkage by about three times than that of amorphous polymers. Part shrinkage increased as melt and molt temperatures increased, and injection pressure decreased. Part shrinkage decreased as gate size increased since the pressure delivery is mush easier for larger gate sizes. Part shrinkage at the position close to the gate was larger than that or the position far from gate. This phenomenon might be occur by difference of residual stress.

• Fire Science and Engineering
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• v.17 no.4
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• pp.36-41
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• 2003

This experimental study shows the combustion characteristics for each coating thickness of water and oil paint which are used as fire retardant paints that prevent fire propagation through cables in underground culverts and trays. To evaluate combustion characteristics, smoke density(ASTM E 662) and Limited Oxygen Index(ASTM D 2863) experiment method was used. As the results of this study, the combustion characteristics of fire retardant paints produced the following : (a) The molt suitable coating thickness of fire retardant paint was 1.5∼2.0 mm in water paint and 0.2 mm in oil paint. (b) Flaming method in experiments of smoke density were found to be higher than Non-flaming method. (c) Water paint has the fire retardant effect and characteristics better than oil paint in measurement results of smoke density and oxygen index. (d) The oxygen index of water and oil fire retardant was able to know that it was satisfied a standard (30 or above).

• Advances in Traditional Medicine
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• v.10 no.3
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• pp.191-199
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• 2010

Acanthopanax Koreanum stem (AK) has been used in Korea as a tonic and sedative as well as a drug with ginseng like activities. The purpose of our present study was to investigate the effects of AK extract (AKE) and Eleutheroside E, major component of AKE on an exacerbated immune function through utilization of protein-energy malnutrition (PEM) diet by using forced swimming test (FST). The immobility time were significantly decreased in the AKE or Eleutheroside E-administrated group compared with the control group on the FST (P < 0.05). The level of blood parameters were not changed significantly. PEM-induced weight loss of mice was reduced by oral administration of 500 mg/kg AKE. AKE oral administration improved the nutritional status such as the food efficiency ratio and the adrenal gland weight. AKE treatment significantly increased the production of interferon (IFN)-$\gamma$ compared with unstimulated splenocytes but not interleukin (IL)-4. Eleutheroside E also significantly increased the IFN-$\gamma$ production but not IL-2 and IL-4 in T cell line, MOLT-4 cells. These results suggest that AKE and Eleutheroside E may influence to immune-enhancing through increasing the physical endurance capacity and immune cell activation.

• Korean journal of applied entomology
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• v.31 no.4
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• pp.480-485
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• 1992

Laboratory studies were done to evaluate the effects of diflubenzuron on embryonic and postembryonic development of Riptortus clavatus Thunberg. Diflubenzuron prevented egg hatch; younger eggs(O-12 h old) were 2 times as susceptible as older(48-60 h old) eggs, but embryos of both younger and older eggs developed normally. Susceptibility of nymphs to diflubenzuron decreased with each successive molt. Compared with the first instar, relative tolerance to diflubenzuron was 1.5 times for the second instar, 18.2 times for the third instar, 39. 4 times for the fourth ins tar and 42.4 times for the fifth instar. Even as low concentrations, diflubenzuron prevented significant numbers of third instar nymphs from developing to fourth and fifth instar nymphs or adults. Weight, longevity and fecundity of adults surviving treatment in the final (fifth) instar were also adversely affected.

• Journal of the Korean Home Economics Association
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• v.39 no.5
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• pp.75-88
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• 2001

This research aims to obtain basic information on the present situation of the instructional media on clothing and textiles education, in middle and high schools. It also strives to get various information needed in order to improve educational environments and teaching methods. The targets of this survey were 225 teachers who teach home economics at middle and high schools in Taejeon, Choongchungnamdo and Junrabookdo. I made up questions their awareness about the instructional media on clothing and textiles education, the educational circumstances of their schools having to do with new media, and their real educational goal. Methods such 3s frequency, percentage, and Chi-square(${\chi}^2$)(statistical significance of differences between variables) were used to research the differences of awareness on using instructional media, according to teachers'various characters, were checked using the SPSS WIN computer program. The results of this research were as fellows; 1. They thought content on the management and the materials of clothing were the ones that need to be developed, compared to other content having to do with the curriculum on clothing and textile education. 2. The real things tuned out to be the molt useful and effective. So the most frequently used media was the Over Head Projector. Also, the teachers expressed in general that they wished to increase the use of computers in order to teach more efficiently. 3. We knew the teachers had little knowledge on the software developed for clothing and textiles education. The infrastructures for educating the using of clothing and textiles, using computers and the internet, were very poor in most schools. The new curriculum that has been proposed needs a more enlarged investment in order for it to function properly and effectively.