• Korean Journal of Child Studies
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• v.10 no.2
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• pp.19-31
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• 1989

The purpose of this research was to examine the concurrent validity of the Nalongyee children's achievement motivation test by studying its relationship to a children's school readiness test. The subjects were 335 preschool children (171 urban and 164 rural) selected from 8 public and 7 private kindergartens located in two metropolitan areas (Seoul and Pusan) and 5 rural counties in Kyungsang Nam Do. Instruments included the Nalongyee Children's Achievement Motivation Test by the author and the School Readiness "Lest by Unhai Rhee. Data were analyzed by Pearson r and Z-test. Readiness was positively related to the total score and sub-areas of achievement motivation (.10-.43). Sub-areas of the achievement motivation test were related to each of the 4 factors of the readiness test. The correlations ranged from .00-.35 with the personal-social response factor, .00-.26 with the associative vocabulary factor, .05-.31 with the number concept factor, and .03-.37 with the perception factor. Significant differences in correlations were found between urban and rural areas for self-confidence, interest in learning, interest in kindergarten and physical competence.

• Proceedings of the Korean Society of Life Science Conference
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• 2007.10a
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• pp.114.2-114.2
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• 2007

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• Journal of Biomedical Engineering Research
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• v.16 no.1
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• pp.33-42
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• 1995

A new neural network architecture for the recognition of patterns from images is proposed, which is partially based on the results of physiological studies. The proposed network is composed of multi-layers and the nerve cells in each layer are connected by spatial filters which approximate receptive fields in optic nerve fields. In the proposed method, patterns recognition for complicated images is carried out using global features as well as local features such as lines and end-points. A new generating method of matched filters representing global features is proposed in this network.

• Economic and Environmental Geology
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• v.7 no.1
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• pp.23-35
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• 1974

Dalsung Mine, located in Kyungsang puk-do, Korea, is well known as one of the typical breccia pipe filling hydrothermal W-Cu deposit. By homogenization temperature with fluid inclusions in quartz crystals (330 samples were dealt with) by heating stage microscope, two temperature ranges were figured out, one is $154^{\circ}{\sim}267^{\circ}C$ (average $210^{\circ}C$), and the other is $283^{\circ}{\sim}335^{\circ}C$ (average $309^{\circ}C$). Regarding to mineral paragenesis, mineralization of the deposit were thought that former, mesothermal stage, W-Cu mineralization processed through out the ore body and later mineralization were limitted under -4level as katathermal solution with Cu minerals.

• Proceedings of the KIEE Conference
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• 1993.07b
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• pp.1007-1009
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• 1993

In this paper, The hybrid method in order to reduce the unknown varible for 3D eddy current calculation is proposed. we adopt the current vector potential(T) and the magnetic scalar potential($\Omega$) as field variable, and adopt image charge method for symetric boundary condition in BEM. We apply the hybrid method to electromagnet for levitation system and analyze the charateristics of eddy current airgap flux distribution, attractive and magnetic drag force according to velocity.

• Animal Systematics, Evolution and Diversity
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• v.19 no.1
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• pp.19-31
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• 2003

The present paper is a part of the studies on the larvae of subfamily Alticinae in North America. Eight species were described and illustrated belonging to genus Altica in the subfamily Alticinae: Altica ambiens alni, A. bimarginata, A. brisleyi, A. litigata, A. potentillae, A. sylvia, A. torquoto and A. ulmi. It is the first to deal the larvae taxonomically in North America. Their key and taxonomic remarks are also given.

• Korean journal of food and cookery science
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• v.19 no.3
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• pp.328-338
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• 2003

The purpose of his study was to investigate the perceptions and preferences of college students to Korean traditional cookies. Self administered questionaires were collected from 512 college students in the Seoul, Kyunggi, Chungchung, Kyungsang, Junla and Gangwondo areas. The data were statistically analysed using t-tests, one-way ANOVA and their correlation. The recognition of Korean traditional cookie was generally low with the exception of these items as either a seasonable or festive food. There were significant differences in the mean recognition and preference values for each kind of Korean traditional cookie between the major subject studied, gender and subject grade. (Eds note: how were the mean values different for the 3 specified variables\ulcorner) The preference of some Korean cookies was relatively higher than estimated, (Eds note: how was the original estimate arrived at\ulcorner) such as Yugwa, Gangjeong, Han-gwa, Hobak-yeot, Ddangkong-yeot-gangjeong and Ssal-yeot-gangjeong. However, it is impossible to discriminate low preference, as over 80% of the low preference values had not been completed on the questionnaires.

• Korean Journal of Soil Science and Fertilizer
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• v.33 no.1
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• pp.24-31
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• 2000

This study was conducted to determine the effect of soil physical characteristics on rhizome rot incidence of platycodon. Sampling sites were Keochang 4, Kimhae 7, Haman 6, Chinju 6 and Koseong 3 fields in Kyongnam province and Hongcheon 6 fields in Kangwon province. The root disease incidence rate was correlated with soil depth Y=-0.747X+88.19($R^2=0.394^{***}$), soil hardness Y=4.36X+8.93($R^2=0.201^*$), bulk density Y=104.7X-80.99($R^2=0.295^{**}$), clay content Y=1.24X+14.14($R^2=0.196^*$), porosity Y=-3.11X+215.9($R^2=0.220^*$) and silt content Y=-0.75X+67.85($R^2=0.178^*$). The yield was correlated with soil depth Y=0.263X+0.971($R^2=0.105^*$), clay content Y=-0.688X+32.74($R^2=0.158^*$), porosity Y=1.974X-93.19($R^2=0.231^{**}$) and silt content Y=53.05X-108.65($R^2=0.232^*$), The optimum cultivated land of perennial platycodon was soil depth over 1m, soil hardness under $5kg\;cm^{-2}$, bulk density $1.0Mg\;m^{-3}$, moisture content 13~17%. clay content 5~10%, porosity 58~63%, silt content 38~64% and soil texture of silt loam.

• Journal of Labour Economics
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• v.26 no.1
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• pp.111-151
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• 2003

This study attempted to analize the hazard rate from unemployment and the influncing factors on the rate by regions. The data this study uses is Korea Labor Institute Panal Study(1998-2001) and the models are hazard analysis and Cox model. The results of hazard analysis are as follow. In capital and it's vicinity, the duration of unemployment is shorter than other regions even if the unemployment rate is higher. The labor market segmentation is confirmed between capital and it's vicinity region and other regions. Kyungsang region is higher in the unemployment hazard rate than Chunla or Chungchung regions. The duration of unemployment in capital and it's vicinity is 9.29 months comparing 11.86 months in the other region. The difference is statistically significant by the significance level 0.001. The duration of unemployment in Kyungsang is 6.96 months comparing 10.95 months in Chunla region. The Cox results which indicate the influncing factors on the hazard rate are as follow. In the regions like non-metro cities and non-capital and vicinitiy, the factors such as female, tenure, wage earners, manufacturing, wholesale and retale decrease the hazard rate. The results indicate that active labor market policies region by region are needed in Korea, especially for the marginal unemployed workes from non flourishing sectors.

• Journal of Preventive Medicine and Public Health
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• v.24 no.1 s.33
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• pp.93-97
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• 1991

The time honoured tuning fork at present widely available for examining vibration sensation is brought about the problem of great interobserver variation. To resolve t his problem, author developed a divice using electric magnet that stimulates constantly tuning fork. The perception time of vibration from tunung fork by this device was tested on the index finger of dominant hand of twenty eight subjects. It was 12.44 seconds on average and ranged from 9.47 to 17.25. Coefficient of variation of it was 16.89 percent. Correlation coefficient between test and retest after 30 minutes was 0.957(p<0.01). This device is portable. Test procedure in non-invasive, non-aversive and simple, can be performed within one minute, and does not require the skilled technician. It is felt that this device testing vibration perception time is suitable as screening tool for early detection of occupational peripheral neuropathy.