• Korean Journal of Optics and Photonics
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• v.14 no.4
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• pp.351-354
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• 2003

We present a 12.5-GHz interleaved bidirectional ultra-dense wavelength-division-multiplexing transmission over a conventional single mode fiber of 80 km achieving spectral efficiency as high as 0.8-bit/s/Hz. The beat-frequency-locking method is used to stabilize the channel frequency within $\pm$200 MHz error. To facilitate the identification of multiple beat frequency signals, we use a radio-frequency spectrum analyzer. The bidirectional transmission penalty is about 0.3 dB compared with the unidirectional transmission over the same fiber.

• The Journal of the Korean life insurance medical association
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• v.2 no.1
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• pp.195-217
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• 1985

A statistical analysis on the ratio of weight-for-height in insurance medicine was carried out in a total of 12,690 insured persons who were medically examined at the Honam medical department, Dong Bang life insurance company, ltd. from June, 1979 to February, 1984. The results were as follows: 1. The mean value of the ratio of weight-for-height(W/H ratio) was $102.3{\pm}11.3%$ in all males, and $105.2{\pm}103.6%$ in all females. The difference of the values between males and females showed statistical significance(P<0.001). The mean value of W/H ratio in all the insureds was $103.8{\pm}12.9%$. In each age group, the mean value of female was higher than that of male without exception(P<0.001). The mean value of both sexes in each age group showed gradual increase with age except for the age group over 50(P<0.001). 2. The incidences of the average weighted, overweighted and underweighted lives were respectively 91.6% in all males, 84.2% in all females(P<0.001); 7.9% in all males, 15.4% in all females(P<0.001); 0.5% in all males, 0.4% in all females(P>0.05). The incidences of average weighted, overweighted and underweighted lives in all the insureds were respectively 87.6%, 12.0% and 0.5%. The incidence of the average weighted lives in male in each age group was always higher than that in female with the exception of the age group below 19(P<0.001), whereas the incidence of the overweighted lives in male in each age group was always lower than that in female(P<0.05 in the age group below 19, P<0.001 in the other age groups). The incidence of average weighted lives of both sexes in each age group showed gradual decrease with age from the second to fifth decade(P<0.001), whereas the incidence of the overweighted lives of both sexes in each age group showed gradual increase with age from the second to fifth decade(P<0.001). 3. The relative frequency distribution polygons of W/H ratio of both sexes drawn in a pair on one coordinate plane revealed lying in juxtaposition each other horizontally and showed the shifting of female's polygon to male's one toward the direction of greater value of W/H ratio at a short distance which increased gradually with age. 4. Correlations between both sexes and among age groups relating to W/H ratios of the insureds seem to be a physiological phenomenon of body build and should be considered on the rating of the build. Author prepared a rating table of build based on the correlations above menthioned. Some gradients by sex and age in the rating table of build are organized; in female group, the ratings of 0, 30-50, 50-100 and 100-D are to calculate by the build with W/H ratio of 80-125%, $126{\sim}145%,\;146{\sim}165%$ and over 166% respectively in the age group of 29 or under, by the build with W/H ratio of $80{\sim}130%,\;131{\sim}150%,\;151{\sim}170%$ and over 171% respectively in the age group of $30{\sim}59$, and by the build with W/H ratio of $80{\sim}135%,\;136{\sim}155%,\;156{\sim}175%$ and over 176% respectively in the age group of 60 or over. In male group, the ratings of 0, $30{\sim}50$, 50-100, and 100-D are to calculate by the build with W/H ratio of $80{\sim}120%,\;121{\sim}140%,\;141{\sim}160%$ and over 161% respectively in all ages. Of under weighted lives, in both sexes, the ratings of 30-50 and 50-D are to calculate by the build with W/H ratio of $76{\sim}79%$ and under 75% respectively. The results of the ratings according to a rating table by author were as follows: The incidence of the ratings of 0, 30-50, 50-100 and 100-D showed no difference between male and female. The incidence of the ratings of 0(indicating the average weighted lives) showed gradual decrease with age and the incidence of the ratings of 30-50 and 50-100(indicating the overweighted lives) showed gradual increase with age. These results are thought to be considerably reasonable because the incidence of the builds in each age group is supposed to have no difference by sex and the incidence of the overweighted lives would increase with age.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.23 no.1
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• pp.49-57
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• 2005

The proposed algorithm is to achieve the robust optical flow detection which is applicable for the case that the outlier rate is over 80%. If the outlier rate of optical flows is over 30%, the discrimination between the inliers and outlier with the conventional algorithm is very difficult. The proposed algorithm is to overcome such difficulty with three steps of grouping algorithm; 1) constructing the 2D histogram with two axies of the lengths and the directions of optical flows. 2) sorting the number of optical flows in each bin of the two-dimensional histogram in the descending order and removing some bins with lower number of optical flows than threshold. 3) increasing the resolution of the two-dimensional histogram if the number of optical flows in a specific bin is over 20% and decreasing the resolution if the number of optical flows is less than 10%. Such processing is repeated until the number of optical flows falls into the range of 10%-20% in all the bins. The proposed algorithm works well on the different kinds of images with many of wrong optical flows. Experimental results are included.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.42 no.3 s.303
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• pp.51-64
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• 2005

The proposed algorithm is to achieve the robust optical flow detection which is applicable for the case that the outlier rate is over $80\%$. If the outlier rate of optical flows is over $30\%$, the discrimination between the inliers and outlier with the conventional algorithm is very difficult. The proposed algorithm is to overcome such difficulty withthree steps of grouping algorithm; 1) constructing the 2 D histogram with two axies of the lengths and the directions of optical flows. 2) sorting the number of optical flows in each bin of the two-dimensional histogram in the descendingorder and removing some bins with lower number of optical flows than threshold 3) increasing the resolution of the two-dimensional histogram if the number of optical flows in a specific bin is over $20\%$ and decreasing theresolution if the number of optical flows is less than $10\%$. Such processing is repeated until the the number of optical flows falls into the range of $10\%-20\%$ in all the bins. The proposed algorithm works well on the different kinds of images with many of wrong optical flows. Experimental results are included.

• Applied Chemistry for Engineering
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• v.23 no.1
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• pp.28-34
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• 2012

In this study, we operated a UASB (upflow anaerobic sludge blanket) reactor by using foodwaste leachate as a raw material with the method of Mesophilic Digestion ($35{\pm}0.5^{\circ}C$) and Thermophilic Digestion ($55{\pm}0.5^{\circ}C$). During 20 days of operating time with the Mesophilic Digestion, the recirculation ratio of effluent was stepwisely changed in every five days. Thermophilic Digestion was carried out at the same condition for Mesophilic Digestion. Results showed that the organic removal efficiency of Mesophilic Digestion was over 90% and the yield of methane production was from 66 up to 70%. The organic removal efficiency of Thermophilic Digestion was over 80% and the yield of methane production was between 62 to 68%. Also, when UASB reactor was operating to over the 3Q effluent recirculation, the experiment could be carried out economically and stably.

• Journal of Ginseng Research
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• v.13 no.1
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• pp.123-129
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• 1989

In this survey we have studied the opinions of housewives to understand of the preferences of domestic consumers. This survey was conducted using a Questionnaire with 30 questions answered by 1,009 housewives. The following are the main findings. 1. The favorite beverages of housewives were coffee, yulmu tea, ginseng tea and black tea in decreasing order. Over 80% of the housewives recognized ginseng as an excellent and effective food . 2. The over 90% of the housewives had experience in taking ginseng. Their highest expectation of ginseng was its efficacy as a remedy for the hang-over syndrom. 3. The majority of housewives boiled it in water when take ginseng and indicated that ginseng was expensive in general. 4. They knew well about ginseng drink and tea whereas most of the housewives didn't know about ginseng capsules and tablets. 5. The preference for ginseng products differs greatly by the age of the housewife. Therefore, to make ginseng more favorable as a perfect tonic food, new ginseng products must be developed which appeal to the preference of the consumers.

• The Korean Journal of Pesticide Science
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• v.8 no.4
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• pp.347-352
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• 2004

Susceptibility of Curculio sikkimensis adults to 39 commercial insecticides were evaluated by body dipping method, Among them sixteen insecticides of chlorpyrifos, fenitrothion, fiponil, phenthoate, benfuracarb, thiodicaib, carbosulfan, bifenthrin, cypermethrin, $\lambda$-cyhalothrin, deltamethrin, clothianidin, acetamiprid+diflubenzuron, etofenpox+diazinon, esfenvalerate+fenitrothion and furathiocarb +diflubenzuron showed 100% mortality. Insecticides with over 80% residual effect at 1 day after treatment were phenthoate, benfuracarb and thiodicarb (95.0, 82.5, and 85.0%, respectively). However, after that, it was dropped rapidly. Other insecticides showed low residual effect. In the control efficacy test on C. sikkimensis, insecticides with over 90% control values at 1 day after treatment were phenthoate, thiodicarb, fipronil, acetamiprid+bifenthrin and furathiocarb+diflubenzuron. However, all insecticides from 2 days after treatment were over 90%.

• Korean Journal of Clinical Laboratory Science
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• v.44 no.3
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• pp.97-102
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• 2012

This study was performed to investigate the average fasting blood sugar levels from various Homeless and the old at nursing homes. Subjects (297 Homeless and 190 aged people) were examined in April, 2011 to June, 2010 in Daegu city area and only fasting blood sugar was measured. Subjects consist of 274 (56.30%) men and 213 (43.70%) women but primarily comprise over 60s. Blood was collected by vein-puncture, centrifuged and analyzed by TBA-C8000. The number of each subject for blood sugar levels of men groups were shown 197 (40.50%) with under 110, 24 (4.90%) with 110~125, and 53 (10.90%) with over 126. On the other hand, 127 (26.10%) with under 110, 33 (6.80%) with 110~125 and 53 (10.90%) with over 126 from women groups. This means that the average prevalence rate of diabetes is approximately 10% at each sex. Depending on age, the fasting blood sugar level over 126 increased with advancing age but the significance of results was not shown. Two groups, Homeless and aged people at nursing homes, the fasting blood sugar level was alittle high (2.9%) from Homeless but not significant. Regular blood sugar test and HbA1c test for people could be play an important role to prevent diabetic disorders under the government's interest.

• Research in Community and Public Health Nursing
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• v.13 no.2
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• pp.343-353
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• 2002

Objectives: The aim of this study was to explore nursing students' attitudes towards sexually active elderly, and to compare their attitudes with those of non-nursing students. Methods: Study subjects consisted of 118 nursing students, and 134 non-nursing students, recruited from two universities. The data were collected from September to November 2001. Vignettes, which presented hypothetical situations of sexual activities of the elderly (65 years of age, 80 years of age/sexual activity mentioned. non-mentioned), were provided as a research method, as well as the use of a structured questionnaire. Vignettes showed the hypothetical situations by male elder's sexual activity and their age. Respondents were asked to address their thoughts in the questionnaire. Results: 1. Nursing students showed more favorable attitudes toward the elderly than non-nursing students, regardless of the presence of sexual activity of the elderly. 2. No significant difference was found in nursing students' attitudes toward the elderly aged 65 and 80 years, between those who were sexually active and those who were not. These results were the same in non-nursing students. 3. Nursing students showed more favorable attitudes toward the sexually active elders aged 65 years (5.6 1.43), than toward sexually active elders aged 80 years (4.89 1.55). This result was also the same in non-nursing students. 4. The variables significantly affecting attitudes toward the sexually active elderly in nursing students were familiarity with old persons (p=. 02), presence of living grandparents (p=. 05), and the experience of caring for old people (p=. 01). However, in non-nursing students, familiarity with old people was the only significant variable that affected their attitudes toward the sexually active elderly. 5. In nursing students, one variable to predict attitudes toward the sexually active elderly was the experience of caring for old people (p=. 03), accounting for 10% of the total variance. In non-nursing students, familiarity with old people was the only variable to attitudes toward the sexually active elderly (p=. 03), accounting for 3% of the variance for attitude. In both student groups, the variables that predicted attitudes toward the sexually active elderly included college major (p=. 03), school year (p=. 01), familiarity with old people (p=. 02), accounting for 12% of the variance for attitude by these variables. conclusion: Nursing students showed more favorable attitudes toward the sexual activity of elders 65 years of age or over, than non-nursing students. However, both the nursing and non-nursing students showed negative attitudes toward the elderly who were 80 years of age when compared with those 65 years of age. There should be a consideration in nursing education curriculums that university students may have negative attitudes towards sexual activity of the elderly over 80 years of age.

• Journal of KIISE:Information Networking
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• v.32 no.2
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• pp.236-243
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• 2005

Most of the existing legacy DSL networks, about 80 million lines world-widely, adopted ‘ATM(Asynchronous Transfer Mode) over DSL’protocol architecture for the effective interworking with the ATM-based regional backbone networks and for the effective support of native ATM-based multimedia application services. Recently, however, the regional backbone networks are moving towards Metro Ethernet networks, instead of the ATM networks, and most of the current multimedia applications are If-based, not native ATM-based. These environmental changes push the architecture of DSL networks to be accordingly changed, and the‘Ethernet over DSL’protocol architecture, instead of existing‘ATM over DSL’, is tried to be applied to the implementation of next generation DSL networks such as VDSL(Very high-rate DSL) . In this paper, we propose two different implementation models for next generation DSL networks in Metro Ethernet backbone environments, respectively EA(Ethernet-to-ATM) implementation model and RE(Ethernet-to-Ethernet) implementation model. And, a comparative analysis focused on the performance and the backward compatability with the legacy DSL networks will be presented.