• Title/Summary/Keyword: Z-score Analysis

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A Study on the Measurement of the Residence Environment Level by the Z-Score (표준 점수법을 응용한 주거환경 수준 측정에 관한 연구)

  • 남해경;김재원;정명희
    • Journal of the Korean housing association
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    • v.12 no.3
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    • pp.125-131
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    • 2001
  • The residence environment is the basis and the receptacle of daily lives and activitives. It influences on the formation of mans personality as an artificial environment. This study aims to analyze the residence environment level of the some local cities by using the Z-score method and to propose a higher residence environment. The elements of measurement in this study are determined by the general methodology. The results are as followings: 1. The residence environment level of Yeosu and Mokpo is high, that of Andong and Kyeongsan is low in this study. The ratio of road paving is the most related element in the correlation analysis. 2. The ratio of sewage supply is low compared with the scale of the dwelling area. So the sanitation environment should be improved. 3. In this correlation analysis on the residence pattern, the ratio of a single detached house is more positive than that of a multi-family house. So the single detached house pattern will be desirable in the residence environment.

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Analysis of Roadkill Hotspot According to the Spatial Clustering Methods (공간 군집지역 탐색방법에 따른 로드킬 다발구간 분석)

  • Song, Euigeun;Seo, Hyunjin;Kim, Kyungmin;Woo, Donggul;Park, Taejin;Choi, Taeyoung
    • Journal of Environmental Impact Assessment
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    • v.28 no.6
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    • pp.580-591
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    • 2019
  • This study analyzed roadkill hotspots in Yeongju, Mungyeong-si Andong-si and Cheongsong-gun to compare the method of searching the area of the spatial cluster for selecting the roadkill hotspots. The local spatial autocorrelation index Getis-Ord Gi* statistics were calculated by different units of analysis, drawing hotspot areas of 9% from 300 m and 14% from 1 km on the basis of the total road area. The rating of Z-score in the 1km hotspot area showed the highest Z-score in the 28th National Road section on the border between Yecheon-gun and Yeongj-si. The kernel density method performed general kernel density estimation and network kernel density estimation analysis, both of which made it easier to visualize roadkill hotspots than district unit analysis, but there were limitations that it was difficult to determine statistically significant priority. As a result, local hotspot areas were found to be different according to the cluster analysis method, and areas that are in common need of reduction measures were found to be the hotspot of 28th National Road through Yeongju-si and Yecheon-gun. It is deemed that the results of this study can be used as basic data when identifying roadkill hotspots and establishing measures to reduce roadkill.

Cognitive Function Effects of Acupuncture Treatment for Mild Cognitive Impairment : Systematic Literature Review and Meta-Analysis (경도인지장애 침치료 인지기능효과 : 체계적 문헌고찰 메타분석)

  • Won Soon Kim
    • Journal of Society of Preventive Korean Medicine
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    • v.28 no.2
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    • pp.151-164
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    • 2024
  • Objectives : Using MMSE and MoCA cognitive tools, this study tried to measure the effect of acupuncture differing by cognitive types. Through the method of PRISMA literature review, this study aimed to understand and improve the acupuncture's effectiveness in its application. Methods : The research method was a literature review and Cochrane meta-analysis of papers on the effectiveness of acupuncture treatments for mild cognitive impairment conducted from 2012 to 2023. The Cochrane risk of bias (RoB) tool was used as a quality analysis tool, and the meta-analysis tool was Cochrane RevMan V5.4.1 software. Results : As a result of the study, a total of 967 subjects were used for analysis, and 16 papers on randomized acupuncture trials were analyzed. The results are as follows: As a result of meta-analysis of acupuncture intervention for mild cognitive impairment, the MMSE score had an average of 1.61 with a 95% confidence interval ranging from 0.14 to 3.07, and a statistically significant result with p<0.001. The Z-score was 2.15, which corresponded to a p-value of 0.03. The MoCA score had an average range between 0.39 and 2.49, also showing statistical significance with p<0.001, and a Z-score of 2.70 (p=0.007). The effect of acupuncture in subjects with mild cognitive impairment was significant. Conclusion : The suggestions and conclusion indicate that acupuncture intervention has a significant effect on mild cognitive impairment. This study propose future experimental research on various types of acupuncture interventions for mild cognitive impairment. The significance of this study is that it presented basic data for the development of a preventive convergence cognitive intervention program for patients with mild cognitive impairment in the community.

An analysis of emotional English utterances using the prosodic distance between emotional and neutral utterances (영어 감정발화와 중립발화 간의 운율거리를 이용한 감정발화 분석)

  • Yi, So-Pae
    • Phonetics and Speech Sciences
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    • v.12 no.3
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    • pp.25-32
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    • 2020
  • An analysis of emotional English utterances with 7 emotions (calm, happy, sad, angry, fearful, disgust, surprised) was conducted using the measurement of prosodic distance between 672 emotional and 48 neutral utterances. Applying the technique proposed in the automatic evaluation model of English pronunciation to the present study on emotional utterances, Euclidean distance measurement of 3 prosodic elements such as F0, intensity and duration extracted from emotional and neutral utterances was utilized. This paper, furthermore, extended the analytical methods to include Euclidean distance normalization, z-score and z-score normalization resulting in 4 groups of measurement schemes (sqrF0, sqrINT, sqrDUR; norsqrF0, norsqrINT, norsqrDUR; sqrzF0, sqrzINT, sqrzDUR; norsqrzF0, norsqrzINT, norsqrzDUR). All of the results from perceptual analysis and acoustical analysis of emotional utteances consistently indicated the greater effectiveness of norsqrF0, norsqrINT and norsqrDUR, among 4 groups of measurement schemes, which normalized the Euclidean measurement. The greatest acoustical change of prosodic information influenced by emotion was shown in the values of F0 followed by duration and intensity in descending order according to the effect size based on the estimation of distance between emotional utterances and neutral counterparts. Tukey Post Hoc test revealed 4 homogeneous subsets (calm

The Analysis of BMD in Forearm and Hip Joint with DEXA (DEXA에 의한 아래팔과 엉덩관절의 골밀도 분석)

  • Lee, Kwang-Sung;Park, Ui-Su;Jeon, Min-Cheol
    • The Journal of the Korea Contents Association
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    • v.15 no.3
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    • pp.168-173
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    • 2015
  • Use of forearm and hip joint bone density scan and find the clinical usefulness of the results that can be inferred as a result of any other region sites injured by a correction factor which if One part up. Groups of 60 patients, 10 patients by age 20-70 were composed of patients measured with the forearm and lumbar spine bone mineral density T-score and Z-score of the survey for each of the three factors that it was Find the correction factor to obtain the relationship. Bone mineral density of the correlation coefficient R = 0.8 correction factor is Y = 1.341X + 0.146. T-score of correlation coefficient R = 0.804 and the correction factor Y = 0.565X - 0.327 is Z-score of the correlation coefficient R = 0.637 correction factor Y = 0.539X - 0.225. It is regarded that there will be a clinical availability which can analogize the result of a part by using the result of the other part. It will be able to determine an auxiliary role in the clinical diagnosis. Correction factor to the equation Y = 1.341X + 0.146 is recommended.

Therapeutic Efficacy of Alendronate for Glucocorticoid Induced Metabolic Bone Disease in Children with Nephrotic Syndrome (신증후군 환아에서 스테로이드 유발 대사성 골질환에 대한 Alendronate의 치료 효과)

  • Lee Ji-Eun;Lee Hyun-Ok;Paik Kyung-Hoon;Lee Suk-Hyang;Jin Dong-Kyu
    • Childhood Kidney Diseases
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    • v.8 no.1
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    • pp.33-42
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    • 2004
  • Purpose : Children with nephrotic syndrome(NS) are under high risk for metabolic bone disease(MBD) as a complication of long-term glucocorticoid therapy. We prospectively evaluated the effect of oral bisphosphonate(alendronate) therapy in children with NS, which has proven efficacy in adult patients with glucocorticoid induced MBD. Methods : Among 58 children with NS, aged 5 to 8 years and haying a disease duration of more than 2 years, 30(51.7%) were enrolled to meet the selection criteria, less than -1.0 Z-scores of lumbar spine bone mineral density(BMD) by dual energy X-ray absorptiometry (DEXA). These 30 children were divided into three groups and each were assigned to receive alendronate, calcitriol, and no-medication, respectively for one year. Lumbar spine BMD was followed up every 6 months and the biochemical indexes were measured before and 1 year after the treatment. There were no significant difference among groups with respect to the average age, the initial BMD, and the cumulative steroid doses. Analysis of the treatment efficacy was done by the % change of BMD and by the changes in Z-scores of lumbar spine BMD. Results : Mean age and disease duration of patients at the initial lumbar spine BMD evaluation was $7.4{\pm}1.7$ years and $2.2{\pm}1.2$ years, respectively. Twenty-three of 30 children(76%) had osteopenia, and seven(23%) had osteoporosis. There was no difference in the biochemical values among the groups, before and 1 year after the treatment(P<0.05). Twenty two children(73.3%) with frequent relapsing or steroid dependant NS had more frequent MBD, compared to the 8 children(26.6%) with infrequent relapsing NS. The one year % changes of BMD were 8.56 in alendronate group, 5.79 in calcitriol group, and 1.9 in no-medication group. The changes in Z-score of lumbar spine BMD increased in the alendronate group and the calcitriol group, but not in the no-medication group. One year % changes of BMD were different among groups(P=0.0002). Significant differences were found between the alendronate and the no-medication group, and between the calcitriol and the no-medication group(P<0.05). There was no difference between the alendronate and the calcitriol group. No serious adverse effect was observed in the alendronate group. Conclusion : Children with NS receiving high dose steroids are under the high risk of BMD and should undergo regular BMD evaluation. Z-score of lumbar spine BMD was a useful parameter in diagnosing low bone mass in children. Alendronate weekly oral therapy was effective and relatively safe in increasing the lumbar spine BMD in children with NS having steroid induced MBD.

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Proteome Analysis of Bovine Longissimus dorsi Muscle Associated with the Marbling Score

  • Shen, Y.N.;Kim, S.H.;Yoon, D.H.;Lee, H.G.;Kang, H.S.;Seo, K.S.
    • Asian-Australasian Journal of Animal Sciences
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    • v.25 no.8
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    • pp.1083-1088
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    • 2012
  • The breeding value of marbling score in skeletal muscle is an important factor for evaluating beef quality. In the present study, we investigated proteins associated with the breeding value of the marbling score for bovine sirloin to select potential biomarkers to improve meat quality through comparative proteomic analysis. Proteins isolated from muscle were separated by two-dimensional gel electrophoresis. After analyzing images of the stained gel, seven protein spots for the high marbling score group were identified corresponding to changes in expression that were at least two-fold compared to the low marbling score group. Four spots with increased intensities in the high marbling score group were identified as phosphoglycerate kinase 1, triosephophate isomerase, acidic ribosomal phosphoprotein PO, and capping protein (actin filament) Z-line alpha 2. Spots with decreased intensities in the high marbling score group compared to the low score group were identified as 14-3-3 epsilon, carbonic anhydrase II, and myosin light chain 1. Expression of myosin light chain 1 and carbonic anhydrase 2 was confirmed by Western blotting. Taken together, these data could help improve the economic performance of cattle and provide useful information about the underlying the function of bovine skeletal muscle.

Analysis of Food Habits and Nutrients Intake of Nursery School Children Living in Anyang City, based on Z-score of Weight for Height (보육시설 아동의 신장별 체중 Z-score에 따른 식습관과 식이섭취 분석 -안양시 동안구 소재 보육시설 대상-)

  • Ryu, Hyeon-Ju;Kim, Yeon-Jeong;Nam, Hui-Jeong;Min, Yeong-Hui;Park, Hye-Ryeon
    • Journal of the Korean Dietetic Association
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    • v.10 no.1
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    • pp.1-12
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    • 2004
  • To determine food preferences and nutrients intake of nursery school children, 199 children, ages 1 to 6 years, were assessed with a structured questionnaire completed by their mothers. The questionnaire included questions related to dietary habits, mother's interest in the child's health, family history of diseases, etc. The nutrients intake was measured by 24-hour recall method. Children's weight and height were measured by trained investigators on the same day. For analysis purposes, the subjects were grouped into underweight, normal and overweight groups based on the z-score of weight for height. Only 58.3% of the subjects were grouped into the normal weight group. On the other hand, 19.1% were in the underweight group and 22.6% were in the overweight group. Forty four percent of them showed unbalanced dietary habits such as preference for picky foods, 40.0% of them disliked vegetables, and 46.7% disliked minor grains other than rice. Children in the underweight group showed a higher score of inappropriate dietary habits compared to those of normal or obese groups. The level of nutrients intake of the subjects was higher than the Korean RDA value in general, except for Ca, calories, and Zn. However, 87.4% of the children showed a higher intake level than 125% of KRDA in protein, and 18.2% and 41.4% of them showed a lower intake level than 75% of KRDA in Fe and Ca, respectively. Children in the underweight group showed a higher percentage of eating less than 75% KRDA in niacin compared to those of the normal or overweight group (p<0.05) and we found a similar tendency in Fe, Zn and Vitamin $B_1$ intake.

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A Study on the Correlation between Road-kill Hotspot and Habitat Patches (야생동물 서식지 패치와 로드킬 핫스팟의 상관관계 연구)

  • Seok, Sangmuk;Lee, Jiyeong
    • Journal of Environmental Impact Assessment
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    • v.24 no.3
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    • pp.233-243
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    • 2015
  • The ecosystem fragmentation due to transportation infrastructure causes road-kill phenomenon. When making policy for reducing road-kill it is important to select target-species in order to enhance its efficiency. However, many corridors installed in Korea have been raised issues about their effectiveness due to lack of considerations such as target-species selection, site selection, and management, etc. In this study, we are to grasp relationship between road-kill area and habitat patches and suggest that spatial location of habitat patches should be considered as one of the important factors when making policy for reducing road-kill. Habitat patches were presumed from overlying suitability index that chosen by literature review and road-kill hotspot was determined by Getis-Ord $G_i^*$ analysis. Afterwards, we performed a correlation analysis between $G_i$ Z-score and the distance from habitat patches to the roads. As a result, there is a negative correlation between two variables, It affects the $G_i^*$ Z-score going up if the habitat patches and the roads become closer.

Application of Hot Spot Analysis for Interpreting Soil Heavy-Metal Concentration Data in Abandoned Mines (폐금속 광산의 토양 중금속 오염 조사 자료 해석을 위한 핫스팟 분석의 적용)

  • LEE, Chae-Young;KIM, Sung-Min;CHOI, Yo-Soon
    • Journal of the Korean Association of Geographic Information Studies
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    • v.22 no.2
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    • pp.24-35
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    • 2019
  • In this study, a hotspot analysis was conducted to suggest a new method for interpreting soil heavy-metal contamination data of abandoned metal mines according to statistical significance level. The spatial autocorrelation of the data was analyzed using the Getis-Ord $Gi{\ast}$ statistic in order to check whether soil heavy metal contamination data showing abnormal values appeared concentrated or dispersed in a specific space. As a result, the statistically significant data showing abnormal values in the mine area could be classified as follows: (1) the contamination degree and the hotspot value (z-score) were both high, (2) the contamination degree was high but the z-score was low, (3) the contamination degree was low but the z-score was high and (4) the contamination degree and the z-score were both low. The proposed method can be used to interpret the soil heavy metal contamination data according to the statistical significance level and to support a rational decision for soil contamination management in abandoned mines.