• Title/Summary/Keyword: Rank Correlation Coefficient

Search Result 169, Processing Time 0.025 seconds

Study on the correlation between the soil bacterial community and growth characteristics of wild-simulated ginseng(Panax ginseng C.A. Meyer) (토양세균군집과 산양삼 생육특성 간의 상관관계 연구)

  • Kim, Kiyoon;Um, Yurry;Jeong, Dae Hui;Kim, Hyun-Jun;Kim, Mahn Jo;Jeon, Kwon Seok
    • Korean Journal of Environmental Biology
    • /
    • v.37 no.3
    • /
    • pp.380-388
    • /
    • 2019
  • The studies regarding soil bacterial community and correlation analysis of wild-simulated ginseng cultivation area are insufficient. The purpose of this study was to investigate the correlation between soil bacterial community and growth characteristics of wild-simulated ginseng for selection of suitable cultivation area. The bacterial community was investigated by high throughput sequencing technique (Illumina platform). The correlation coefficient between soil bacterial community and growth characteristics were analyzed using Spearman's rank correlation. The soil bacterial community from soil samples of 8 different wild-simulated ginseng cultivated area exhibited two distinct clusters, cluster 1 and cluster 2. The relative abundance of Proteobacteria (35.4%) and Alphaproteobacteria(24.4%) was observed to be highest in all soil samples. The lower soil pH and higher abundance of Acidobacteria resulted in increased growth of wild-simulated ginseng. Additionally, abundance of Acidobacteriia (class) and Koribacteraceae (family) demonstrated significant positive correlation with fresh weight of wild-simulated ginseng. The results of this study clearly state the correlation between growth characteristic and soil bacterial community of wild-simulated ginseng cultivation area, thereby offering effective insight into selection of suitable cultivation area of wild-simulated ginseng.

Correlation Between Apoptosis and Intratumoral Microvessel Density in Non-Small Cell Lung Cancer. (비소세포 폐암에서 아포프토시스와 종양내 미세 혈관 밀도의 관계)

  • 장인석;김종우;김진국;한정호
    • Journal of Chest Surgery
    • /
    • v.32 no.2
    • /
    • pp.151-157
    • /
    • 1999
  • Background: Increasing evidences from experimental studies indicate that apoptosis may be inversely related to angiogenesis in tumor progression. Material and Method: To explore how apoptosis correlates with tumor angiogenesis, we measured the apoptotic index(AI) using the terminal deoxynucleotidyl transferase method(Apop Tag In Situ Apoptosis Detection Kit, ONCOR) and the intratumoral microvessel density using the anti-CD31 monoclonal antibody in non-small cell lung cancer. Result: Statistical analysis revealed an inverse correlation between AIs and intratumoral microvessel densities in squamous cell lung carcinoma(Spearman rank correlation coefficient r=- 0.229, p=0.047). Conclusion: The results of this study demonstrated that the amount of apoptosis in squamous cell lung carcinoma may be influenced by the extent of neovascularization. This suggests that tumor angiogenesis may contribute to a reduction of apoptosis in tumor cells.

  • PDF

Occurrence of Glutathione Sulphydryl (GSH) and Antioxidant Activities in Probiotic Lactobacillus spp.

  • Yoon, Yung H.;Byun, Jung R.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.17 no.11
    • /
    • pp.1582-1585
    • /
    • 2004
  • The antioxidative ability on the basis of reduced glutathione sulphydryl level, the inhibition activities of linoleic acid peroxidation of cell free extract of Lactobacillus spp. and the effects of types of media and growth phase of the cells on the cellular GSH level have been determined. Correlation between reduced glutathione sulphydryl level and antioxidative ability of Lactobacillus spp. was analyzed: Lactobacillus casei HY 2782 contained 25.15 $\mu$mole/g of GSH, the cellular GSH level of L. casei HY 2782 reached maximum after 24 h of cultivation and tended to decrease on further cultivation up to 72 h. There was a significantly higher level of cellular GSH when grown in de Man Rogosa and Sharpe (MRS) broth than in tryptone phytone yeast extract (TPY) broth or bromcresol pruple dextrose (BCP) broth (p<0.05). The antioxidant activity of cell free extract of Lactobacillus spp. have been shown to be significantly different among strains in the inhibition of linoleic acid peroxidation by thiobarbituric acid (TBA) test (p<0.01). L. casei HY 2782 and L. acidophilus ATCC 4356 revealed a high degree of antioxidative effect in linoleic acid oxidation system. Spearmans' rank correlation coefficient between inhibitory activity on linoleic acid peroxidation and cellular GSH levels of Lactobacillus spp. was 0.65, which means a significant positive correlation.

The Relationship between Functional Movement Screen and Ankle Dysfunctions with Chronic Ankle Instability

  • Choi, Ho-Suk;Shin, Won-Seob;Shim, Jae-Kwang;Choi, Sung-Jin;Bang, Dae-Hyouk
    • The Journal of Korean Physical Therapy
    • /
    • v.26 no.6
    • /
    • pp.459-463
    • /
    • 2014
  • Purpose: The purpose of this study was to investigate the correlations between functional movement screen (FMS) and ankle dysfunctions in subjects with chronic ankle instability (CAI). Methods: This study was a cross-sectional study of 20 participants with CAI. The ankle dorsiflexion range of motion (ROM), Foot and Ankle Disability Index (FADI), center of pressure (COP) path length, and COP velocity for ankle dysfunction were measured in all the subjects. All the subjects underwent the FMS concerned with ankle functions consisted of deep squats, hurdle steps and in-line lunges. The Spearman rank-order correlation coefficient was used to determine relationship between the ankle ROM, FADI, COP and FMS. Results: The results of the deep squat and in-line lunge exercises revealed a significant correlation with the ankle dorsiflexion ROM, FADI, COP path length, and COP velocity. The hurdle step showed no correlation with the ankle dorsiflexion ROM and FADI but a significant relationship with the COP path length and COP velocity. Conclusion: The results of this study showed that relationship deep squat and in-line lunge and it is suggested that an assessment tool using ankle dorsiflexion ROM and ankle instability would be clinically effective.

Importance of Nurses's Caring Behaviors as Perceived by Staff Nurses and Patients (간호사와 환자가 지각한 돌봄행위 중요도에 관한 연구)

  • Kim Young-Yi;Lee Byoung-Sook
    • Journal of Korean Academy of Fundamentals of Nursing
    • /
    • v.6 no.1
    • /
    • pp.18-34
    • /
    • 1999
  • Nurse's caring behaviors are essential to help patients cope with their health problems. The purpose of this study was to investigate the importance of nurse's caring behaviors as perceived by staff nurses and patients. The subjects were 295 staff nurses and 340 patients from five medical centers in Taegu. Data collection was done from Dec. 10, 1997 to Jan. 31, 1998. The tool for this study was a 7 point Likert type scale with 27 earing behaviors developed by Lee(1996). Cronbach alpha of the tool was .9701 in staff nurses and .9618 in patients. Data were analyzed with SAS using t-test, ANOVA and Spearman rank correlation program. The results are as follows : 1. The a verage score of perceived importance of nurse's taring behaviors for the 27 items was 5.65 in staff nurses and 4.97 in patients. 2. The most important caring behaviors perceived by the nurses was 'Nurse gives painless and cautious injection and treatment for patients' and for the patients, 'Nurse gives hygienic treatment and nursing care'. 3. The caring behavior which showed a significant difference between the ranks of perceived importance by staff nurses and patients was 'to treat the patient with tenderness and friendship'. 4. The Spearman rank correlation coefficient between the ranks of importance perceived by staff nurses and patients was 0.8302. With the results of this study, the staff nurses could be recognized to have much enthusiasm and passion about caring. It is suggested that nurses let the public know about the nurses' caring roles. In the future, research to investigate the actual practice of nurses' caring behavior is necessary.

  • PDF

Agreement of Physical Activity Measured Using Self-Reporting Questionnaires with Those Using Actigraph Devices, Focusing on the Correlation with Psychological State

  • Seo, Kyoungsan;Jung, Mi Ok;Suh, Minhee
    • Journal of Korean Biological Nursing Science
    • /
    • v.23 no.4
    • /
    • pp.287-297
    • /
    • 2021
  • Purpose: This study aimed to evaluate the correlation and agreement of physical activity (PA) between data obtained from wearable Actigraph devices and self-reporting questionnaires, and to investigate the relationship between psychological state (depression, anxiety, and fatigue) and PA. Methods: A descriptive study was conducted using physical measurements and surveys. PA was measured through both the International Physical Activity Questionnaire (IPAQ) and the Actigraph GT3X+ device. The demographic characteristics of the subjects, as well as their depression, anxiety, and fatigue scores, were collected with structured questionnaires. The Spearman's rank correlation coefficient and the Bland-Altman plot method were employed. Results: Data from 36 healthy adults were analyzed. The overall levels of PA measured using the IPAQ and the Actigraph were 1,891.69 MET min/week and 669.96 MET/day, respectively. Total levels of PA did not show a significant correlation between the two measurement methodologies. However, the moderate-intensity PA resulting from the IPAQ scores showed a significant positive correlation with the light-intensity PA recorded by the Actigraph. The Bland-Altman plot analysis demonstrated that the levels of PA as measured by the two different methods did not match. In addition, PA measured using the Actigraph showed a significant negative correlation with depression and anxiety whereas PA measured using the IPAQ showed a significant positive correlation with fatigue. Conclusion: The conclusion of this study is that the data obtained from the subjective self-reporting questionnaire and the wearable Actigraph do not correlate or match in healthy adults. Future research should investigate the relationship between depression and PA intensity through the Actigraph, or other wearable devices equipped with smartphone apps.

Suggestion of a New Method of Computing Percentage of Victories for the Korean Professional Baseball (한국 프로야구에서 새로운 승률제의 제안)

  • Kim, Hyuk-Joo
    • The Korean Journal of Applied Statistics
    • /
    • v.24 no.6
    • /
    • pp.1139-1148
    • /
    • 2011
  • Team standings in the regular professional baseball league should be determined based on a reasonable criterion; however, an unreasonable Japanese method is being used in Korea as of 2011. In this paper, we suggest a new method of computing the percentage of victories constructed by combining the advantages of the methods to determine team standings used in Korean professional baseball. We also have applied preexistent methods and suggested method to past and present Korean professional baseball data.

A study on the determination of an optimal handle diameter for a signal billy (신호봉 손잡이의 최적 굵기 결정에 관한 연구)

  • 변승남;이동훈
    • Journal of the Ergonomics Society of Korea
    • /
    • v.16 no.1
    • /
    • pp.15-27
    • /
    • 1997
  • The objectives of this study were twofold; (1) to determine an optimal handle size of a signal billy, based on the subjective assessment of grip comfort and (2) to investigate the relationship between hand anthropometry and the optimal handle size. Thirty-seven university male students were asked to rate seven cylindrical handles of different diameters in barehanded and gloved conditions, respectively. Among these handles, 3.5cm diameter of the handle size was found to be the most comfortable, in both bardhanded and gloved conditionsl. However, no statistically significant reduction in grip comfort occurred within handle diameter ranging from 2.5cm to 4.0cm. As the handle diameter was deivated from the range, grip discomfort in creased significantly. A Spearman rank correlation coefficient test revealed that hand anthropometries such as finger lengths, hand circumference, and hand thickness were statistically significant factors on the determination of the optimal handle size. The implications of these findings were discussed. The results of this study can be used as guidelines in designing the hand tools for power grip.

  • PDF

Resilience, Coping and Adjustment to Illness in Children with Chronic Illness (만성질환아의 극복력(resilience)과 대처, 질병적응)

  • Sim, Mi-Kyung;Shin, Yeong-Hee;Kim, Tae-Im
    • Child Health Nursing Research
    • /
    • v.12 no.2
    • /
    • pp.151-159
    • /
    • 2006
  • Purpose: The purpose of this study was to describe the relationships between resilience, coping and adjustment to illness and to identify the effect of resilience on adjustment in children with chronic illness. Method: The participants in this study were 71 children who were seen at one of 3 hospitals, either in outpatient clinics or as admitted patients. Instruments used in this study were self-reported questionnaires. The data were collected from March to October, 2005 and analyzed using descriptive statistics, t-test or ANOVA, Pearson correlation coefficient and stepwise multiple regression. Result: Adjustment to illness was significantly different according to sex and birth rank. There was a significant correlation between resilience, coping and adjustment to illness. Resilience was a predictor of adjustment to illness and accounted for 28% of thevariance. Conclusions: These findings suggest that programs and strategies that enhance resilience by promoting social competence and support-seeking skills and by fostering self-esteem and coping should be developed for children with chronic illness.

  • PDF

Effects of Postural Habits and Stress on Low Back Pain in Nursing Students (생활습관자세 및 스트레스가 간호대학생의 요통에 미치는 영향)

  • Kim, Jisoo;Choi, Jeong-Sil
    • Journal of muscle and joint health
    • /
    • v.21 no.3
    • /
    • pp.165-172
    • /
    • 2014
  • Purpose: The purpose of this study was to identify effects of postural habits and stress on low back pain experienced by nursing students. Methods: The survey was conducted with 282 students at 5 nursing schools in Seoul, Incheon, Chungcheongbuk, and Jeollabuk Province. Data were collected from October, 2013 to January, 2014. Data analyses including descriptive analysis, ANOVA, Pearson's correlation coefficient, Spearman's rank correlation coefficients, and multiple regression were performed using SPSS 21.0. Results: In multiple regression, habit of standing on force of one feet (${\beta}=.23$, p<.001), habit of sleeping on one's back (${\beta}=-.19$, p=.020), habit of resting the chin on one's hands (${\beta}=.15$, p=.029), and habit of carrying a bag on one shoulder (${\beta}=.12$, p=.011) were associated with low back pain experienced by nursing students. These factors accounted for 12.9% of the variance in the low back pain in undergraduate students. Conclusion: These results suggest that low back pain in nursing students are related to their habits of posture in daily life. Therefore, intervention program to encourage healthy postural habits can be effective to prevent low back pain in nursing students.