Suppression of Meloidogyne incognita in different agricultural soils and possible contribution of soil fauna

Nematology ◽  
2013 ◽  
Vol 15 (4) ◽  
pp. 459-468 ◽  
Author(s):  
Yu Yu Min ◽  
Koki Toyota
Keyword(s):  
Meloidogyne Incognita ◽  
Soil Fauna ◽  
Agricultural Soils ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Biological Properties ◽  
Test Plant ◽  
Organic Input ◽  
Below Ground ◽  
The Relationship

A total of 12 soils collected from different agricultural fields, having different backgrounds of organic input, were evaluated for their suppressive potential against Meloidogyne incognita. Second-stage juveniles (J2) of M. incognita were inoculated into the soils and their survival was evaluated. The number of M. incognita J2 5 days after inoculation differed depending on soil and was significantly lower in two soils, suggesting higher suppressiveness against M. incognita in these soils. This was confirmed by an experiment using tomato as a test plant, in which the gall formation was significantly lower in the two soils than in other soils. To estimate the contribution of below-ground biota to the suppressiveness, numbers of nematodes (predator, omnivore, bacterivore and fungivore) and other soil fauna such as tardigrades and rotifers, were counted. Some soil chemical and biological properties were also measured. Results from multiple linear regression analysis suggested that the number of rotifers, microbial activity, soil pH and total C may be involved in the suppression. The relationship between the suppressiveness and soil chemical and biological parameters is discussed.

scholarly journals Modelling the Additivity of Perceived Exertion in Symmetric, Mid-Sagittal Lifting

1994 ◽  
Vol 38 (10) ◽  
pp. 621-625 ◽  
Author(s):  
Brian D. Lowe
Keyword(s):  
Perceived Exertion ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Whole Body ◽  
Coefficient Of Determination ◽  
Perceived Effort ◽  
Repetitive Lifting ◽  
The Relationship ◽  
Whole Body Exertion ◽  
Lifting Task

Psychophysical approaches to quantifying perceived effort have been used to evaluate the physical demand of many industrial work activities. An experiment was conducted to examine the relationship between ratings of whole-body perceived exertion and differentiated, regional ratings of exertion. The Borg, CR-10 scale was used by 16 subjects performing a simulated repetitive lifting task. Ratings of perceived exertion were obtained for the arms, legs, torso, and central (cardiorespiratory) effort sensations as well as a rating of overall, whole-body exertion. A multiple linear regression analysis was used to predict the whole-body rating of exertion from the differentiated ratings in lifting tasks using both a squat and stoop posture. In the stoop posture condition the coefficient of determination between whole-body perceived exertion and the model including arm, torso, and central ratings was R2=0.81. In the squat posture condition, the final regression model predicting whole-body exertion contained only the rating from the legs (R2 = 0.62). Differentiated ratings explained the majority of the variance in whole-body perceived exertion for squat and stoop lifting tasks.

scholarly journals The More Insufficient, the More Avoidance? Cognitive and Affective Factors that Relates to Information Behaviours in Acute Risks

2021 ◽  
Vol 12 ◽  
Author(s):  
Shuguang Zhao ◽  
Yiming Liu
Keyword(s):  
Information Seeking ◽  
Online Survey ◽  
Linear Regression Analysis ◽  
Mainland China ◽  
Multiple Linear Regression Analysis ◽  
Perceived Severity ◽  
Affective Factors ◽  
Information Avoidance ◽  
Cognitive And Affective Factors ◽  
The Relationship

This study examines the relationship between cognitive and affective factors and people's information-seeking and -avoiding behaviours in acute risks with a 1,946-sample online survey conducted in February 2020, during the outbreak of the COVID-19 pandemic in mainland China. Multiple linear regression analysis showed that perceived information insufficiency correlates negatively with information-seeking behaviour and there was an inverted U-shaped relationship between information insufficiency and avoidance behaviour. As for the risk-related cognitive factors, information seeking increases as perceived severity of risks rises, while information avoiding increases as perceived susceptibility rises. Perceived response efficacy positively correlates with information-seeking and negatively with information-avoidance behaviours. Preliminary results also indicated that different affective factors relate to information-seeking and avoidance behaviours differently.

scholarly journals The Influence of the Application of Marketing Mix on the Purchase Decision of Prospective Consumers of Grand Cempaka Housing

2020 ◽  
Author(s):  
Gesang Sudrajad ◽  
J.E Sutanto
Keyword(s):  
Regression Analysis ◽  
Data Analysis ◽  
Quantitative Methods ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Marketing Mix ◽  
Marketing Strategies ◽  
Purchase Decision ◽  
Relationship Of ◽  
The Relationship

The purpose of this study was to examine the effect of simultaneous and partial marketing mix on the purchase decision of prospective consumers of Grand Cempaka Housing.This research uses quantitative methods, and is a survey research from the types of explanatory research whose focus is placed on relational research: studying the relationship of variables. The object of research is the residents of Pasuruan City and the sample in this study is the Prospective Consumer of Grand Cempaka Housing. Data analysis uses multiple linear regression analysis methods.The results of the analysis show that Products, Prices, Places and Promotions simultaneously have a significant effect on the Decision of Purchasing Prospective Consumers of Grand Cempaka Housing. This shows that the marketing mix is one of the marketing strategies that should be considered so that the implementation of the marketing strategy can run successfully because the elements in the marketing mix influence each other. Variables in the marketing mix which include Products, Prices, Places and Promotions partially have a significant effect on the Decision of Purchasing Prospective Consumers of Grand Cempaka Housing. Keywords: marketing mix; purchase decision; property; housing

scholarly journals Association of Salivary Statherin, Calcium, and Proline-Rich Proteins on Oral Hygiene: A Cross-Sectional Study

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Deepak Gowda Sadashivappa Pateel ◽  
Shilpa Gunjal ◽  
Liew Fong Fong ◽  
Nur Sulwana Mohd Hanapi
Keyword(s):  
Oral Health ◽  
Negative Correlation ◽  
Oral Hygiene ◽  
Linear Regression Analysis ◽  
Rank Correlation ◽  
Multiple Linear Regression Analysis ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
The Relationship

Background. Saliva, as a complex biofluid, plays a pivotal role in maintaining oral health and tooth integrity. There has been inconsistent data available on the relationship between salivary parameters and oral health. This study aims to investigate the association between salivary statherin, acidic proline-rich proteins (aPRP), and calcium with oral hygiene status. Methods. One hundred and eighty-eight healthy subjects aged between 18 and 50 years with varying oral hygiene status who gave consent to participate were included in this cross-sectional study. The subjects were recruited from primary oral health care of MAHSA University. Oral hygiene of all the participants was measured using Oral Hygiene Index–Simplified (OHI-S). Stimulated saliva collected using paraffin wax was analyzed for salivary statherin, aPRP, and calcium. The relationship between salivary statherin, aPRP, and calcium levels with OHI-S was assessed using Spearman’s Rank correlation coefficient; the strength of relationship was assessed by multiple linear regression analysis. Results. The study found a weak positive correlation (r = 0.179, p  = 0.014) between salivary statherin and OHI-S; weak negative correlation (r = −0.187, p  = 0.010) between salivary aPRP and OHI-S; and moderate negative correlation between salivary statherin and salivary aPRP levels (r = −0.50, p  < 0.001) which were statistically significant. Conclusion. Poor oral hygiene is associated with increased statherin and reduced aPRP levels in saliva. Thus, these salivary components may have a role in predicting oral hygiene status.

The relationship between transformational leadership and job satisfaction in selected colleges at King Khalid University, Abha, Saudi Arabia

2019 ◽  
Author(s):  
Esther Iriagbonse Eroje ◽  
Erasmus Kofi Appiah ◽  
Alezi Braimoh Ifindon Eroje ◽  
MEER ZAKIRULLA ◽  
Jimly James Kunjappu ◽  
...  
Keyword(s):  
Job Satisfaction ◽  
Transformational Leadership ◽  
Saudi Arabia ◽  
Regression Analysis ◽  
Linear Regression ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Leadership Behaviour ◽  
R Value ◽  
The Relationship

Abstract Background Leadership has become the key issues in managing the organization, the emerging business and economic environments have forced organizations to be flexible, adaptive, entrepreneurial and innovative to meet changing demand of the present-day business environment. The purpose of the present study is to examine the relationship between the various dimensions of transformational leadership (predictor variable) and their effects on employees’ job satisfaction (criterion variable) in three selected Colleges (Medicine, Dentistry and Science) in King Khalid University. Methods The methodology employed in this study was a quantitative and cross-sectional correlational survey type of design Data collection was done using a questionnaire design that was directly administered to the participants. 250 questionnaires were sent to the participating three colleges (Medicine, Dentistry and Sciences). Results The findings of the multiple linear regression analysis indicated a weak positive association between transformational leadership behaviour and employees’ job satisfaction (R-value 0.386). The multiple linear regression analysis signifies a weak positive correlation between transformational leadership behaviour and job satisfaction (R-value 0.386). A p-value in Spearman’s rho that is less than the 0.05 level of significance indicated that there is a significant level of relationship which exists between transformational leadership behaviour and job satisfaction. Conclusions This study concluded that transformational leadership behaviour and its four dimensions showed a weak positive correlation with a statistically significant level of relationship between transformational leadership behaviour and employees’ job satisfaction among three selected colleges (Medicine, Dentistry and Sciences) in King Khalid University, Abha, Saudi Arabia.

The Impact of Adopting CSR on the Firm's Overall Performance

2021 ◽  
pp. 239-255
Author(s):  
Abdelmajid Ibenrissoul ◽  
Khawla Bouraqqadi ◽  
Souhaila Kammoun
Keyword(s):  
Developing Countries ◽  
Regression Analysis ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Social Dimensions ◽  
The Social ◽  
Managerial Implications ◽  
Overall Performance ◽  
The Impact ◽  
The Relationship

The purpose of the chapter is to study what effect CSR has on firms' overall performance in a developing country context. While most of the previous empirical researches focused on the relationship between CSR and financial performance, the present study suggests exploring the impact of CSR on overall performance which encompasses economic, environmental, and social dimensions as well as stakeholders. The empirical study aims to analyze and measure the social and environmental involvement of large Moroccan firms operating in the main sectors of activity and located in different geographical areas. Using multiple linear regression analysis, the authors empirically test the impact of CSR on overall performance on a sample of 44 companies. The main findings reveal that CSR is a driver for improving image and reputation, enabling the firm to achieve overall corporate performance. On the basis of the main results, they set out some managerial implications and further directions for CSR research in developing countries.

scholarly journals Characteristics of Citrus Canker Lesions Associated with Premature Drop of Sweet Orange Fruit

2019 ◽  
Vol 109 (1) ◽  
pp. 44-51 ◽  
Author(s):  
Fabrício E. Lanza ◽  
Weber Marti ◽  
Geraldo J. Silva ◽  
Franklin Behlau
Keyword(s):  
Sweet Orange ◽  
Linear Regression Analysis ◽  
Negative Relationship ◽  
Citrus Fruit ◽  
Citrus Canker ◽  
Multiple Linear Regression Analysis ◽  
Detachment Force ◽  
Fruit Drop ◽  
Orange Fruit ◽  
The Relationship

During the development of a citrus fruit, many cycles of infection by Xanthomonas citri subsp. citri may occur leading to the development of a range of characteristics of citrus canker lesions scattered across the fruit surface. This study aimed to determine whether the size of the lesions, their distance from the peduncle, and the number and time of appearance of the lesions on fruit of sweet orange were associated with premature fruit drop. A multiple linear regression analysis revealed a negative relationship between the fruit detachment force and the lesion diameter, the proximity of the nearest lesion to the peduncle and the number of lesions. A survival analysis demonstrated that these characteristics significantly influenced the probability and the time that a cankered fruit remained attached to the tree. More than 90% of dropped fruit had large lesions (>5 mm) but not all fruit with large lesions dropped before harvest. Approximately 50% of the harvested fruit had lesions >5 mm. On the harvested fruit remaining on the tree, although large, the lesions had a smaller diameter, were located farther from the peduncle, and were less numerous than those observed on dropped fruit. Small canker lesions neither reduced the detachment force nor the survival of fruit in the tree. The earlier a fruit expressed canker symptoms, the higher the probability the fruit developed large lesions near the peduncle and/or developed lesions in greater numbers. This study provides a better understanding on the relationship between the time of appearance of lesions of citrus canker on fruit and premature fruit drop. This information defines the critical period for fruit protection and may be used to improve disease management.

scholarly journals Empathy and Personality Styles in Medical Students

2020 ◽  
Vol 29 (2) ◽  
pp. 73-87
Author(s):  
Yolanda Dávila Pontón ◽  
Alejandro Reyes Reyes ◽  
Aracelis Calzadilla Núñez ◽  
Víctor Patricio Díaz Narváez ◽  
Robert Utsman ◽  
...  
Keyword(s):  
Medical Students ◽  
Educational Level ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Personality Styles ◽  
Empathy Scale ◽  
Mean Differences ◽  
Student’S T ◽  
The Relationship ◽  
Student’S T Test

This study aimed to establish the relationship between empathy and personality styles in medical students, considering the differences by gender. The participants were 278 students of the medical career of the Universidad del Azuay, Ecuador. They were evaluated using the Jefferson empathy scale and the Millon Index of Personality Styles. Relationships between empathy and personality styles were examined using Pearson's correlation coefficient and hierarchical multiple linear regression analysis, for comparisons by gender and educational levels; with both Student's t test and analysis of variance used respectively. Results indicated that the factor structure of the empathy scale is invariant between men and women, noticing gender differences in care with compassion and total empathy, with women presenting a higher mean. Differences are observed by educational level, where the general empathy in the first three years grows progressively, and then slightly decrease. In conclusion,  female students present a mean score of total empathy greater than men, with differences of empathy according to educational level

Acoustic Correlates of Vocal Quality

1990 ◽  
Vol 33 (2) ◽  
pp. 298-306 ◽  
Author(s):  
L. Eskenazi ◽  
D. G. Childers ◽  
D. M. Hicks
Keyword(s):  
Linear Regression Analysis ◽  
Predictive Coding ◽  
Multiple Linear Regression Analysis ◽  
Inverse Filtering ◽  
Linear Predictive Coding ◽  
Listening Test ◽  
Acoustic Measures ◽  
Acoustic Correlates ◽  
Vocal Quality ◽  
The Relationship

We have investigated the relationship between various voice qualities and several acoustic measures made from the vowel /i/ phonated by subjects with normal voices and patients with vocal disorders. Among the patients (pathological voices), five qualities were investigated: overall severity, hoarseness, breathiness, roughness, and vocal fry. Six acoustic measures were examined. With one exception, all measures were extracted from the residue signal obtained by inverse filtering the speech signal using the linear predictive coding (LPC) technique. A formal listening test was implemented to rate each pathological voice for each vocal quality. A formal listening test also rated overall excellence of the normal voices. A scale of 1–7 was used. Multiple linear regression analysis between the results of the listening test and the various acoustic measures was used with the prediction sums of squares (PRESS) as the selection criteria. Useful prediction equations of order two or less were obtained relating certain acoustic measures and the ratings of pathological voices for each of the five qualities. The two most useful parameters for predicting vocal quality were the Pitch Amplitude (PA) and the Harmonics-to-Noise Ratio (HNR). No acoustic measure could rank the normal voices.

scholarly journals Association between Circulating Endothelial Cells and Carotid Atherosclerosis in Patients Receiving Maintenance Hemodialysis

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Zhang Kun-ying ◽  
Liu Hui-lan ◽  
Duan Xiao-feng ◽  
Li Guo-gang
Keyword(s):  
Endothelial Cells ◽  
Carotid Atherosclerosis ◽  
Linear Regression Analysis ◽  
Intima Media Thickness ◽  
Multiple Linear Regression Analysis ◽  
Circulating Endothelial Cells ◽  
Maintenance Hemodialysis ◽  
Multiparametric Flow Cytometry ◽  
The Relationship ◽  
Common Carotid Arteries

Accelerated atherosclerosis is the major cause of mortality in maintenance hemodialysis (MHD) patients, and endothelial injury associated with MHD might contribute strongly to pathogenesis. The current study was designed to explore possible associations between circulating endothelial cells (CECs) and intima-media thickness of common carotid artery (CCA-IMT) as an indicator of carotid atherosclerosis. Sixty-two MHD patients and 26 age- and sex-matched healthy volunteers were recruited. The number of CECs was determined in peripheral blood using multiparametric flow cytometry. CCA-IMT and presence of plaques in the common carotid arteries were assessed with ultrasound. Laboratory tests results and the demographics were recorded. The finding indicated that numbers of CECs were higher in patients before hemodialysis (predialysis) compared with numbers in controls (P= 0.045). CCA-IMT was also significantly higher in patients than in controls (P< 0.01). A positive relationship was observed between predialysis CECs numbers and CCA-IMT (P< 0.01) in MHD patients. In multiple linear regression analysis, the relationship between the predialysis CECs level and CCA-IMT remained the same even if adjusting for confounding effects. Accordingly, the investigation indicates that the CECs level is positively associated with CCA-IMT in our hemodialysis patients. CECs might be an important marker to the severity of carotid atherosclerosis in MHD patients.

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