scholarly journals Population Fluctuation of Disonycha teapensis Blake (Coleoptera: Chrysomelidae) in Crotalaria longirostrata Hook. & Arn. (Fabales: Fabaceae) in Huimanguillo, Tabasco, Mexico

2021 ◽  
Author(s):  
Leonides Córdova-¬Ballona ◽  
Joaquín A. Rincón-¬Ramírez ◽  
Luz del C. Lagunes-¬Espinoza ◽  
Aracely De la Cruz-Pérez ◽  
Pedro A. Moscoso-¬Ramírez ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Population Growth ◽  
Significant Positive Correlation ◽  
Climatic Factors ◽  
Population Fluctuation ◽  
Population Development ◽  
Phenological Stages ◽  
Temperature And Precipitation ◽  
The Relationship ◽  
Plant Crop

Objective: To establish the population fluctuation of Disonycha teapensis adults and larvae and to determine its relationship with the amount of damaged foliage, temperature, and precipitation. Methodology: The study was carried out in a n=48 Crotalaria longirostrata plant crop. The following data was recorded every week: number of adults and larvae, damaged leaflets percentage, plant phenology, temperature, and precipitation. Based on these data, monthly averages were calculated, and correlation analysis were performed between the population fluctuation of D. teapensis and the fluctuation of the damaged foliage percentage, temperature, and precipitation. Results: All the phenological stages of C. longirostrata were affected by the pest, which showed a constant population growth. The population fluctuation resembled the fluctuation of the damaged foliage percentage, with a significant positive correlation between both variables. Regarding temperature and precipitation, the correlation was negative but not significant; therefore, the relationship between population fluctuation and these climatic factors is not clear. Study Limitations: It was not possible to conduct the study for a full year. Conclusions: The population development of D. teapensis depends on the increase in the amount of foliage of its host plant. This insect attacks plants in all their phenological stages and the amount of damaged foliage is considerable.

The effects of Mediterranean oscillation on temperature and precipitation data in Turkey

2019 ◽  
Vol 11 (3) ◽  
pp. 722-743
Author(s):  
Sezen Cenk ◽  
Partal Turgay
Keyword(s):  
Correlation Analysis ◽  
Pearson Correlation ◽  
Winter Season ◽  
Precipitation Regime ◽  
Spring Temperature ◽  
Temperature And Precipitation ◽  
Important Relationship ◽  
Northwestern Turkey ◽  
Mediterranean Oscillation ◽  
The Relationship

Abstract Mediterranean Oscillation (MO) is one of the atmospheric teleconnections that influence climatic variables such as rainfall and temperature. The aim of this study is to determine the relationship between Mediterranean Oscillation Index (MOI) and temperature and precipitation characteristics in Turkey. First, the Pearson correlation analysis was carried out between the MOI and climate parameters. Then, the result of correlation analysis was evaluated according to Student's t-test. In this regard, the most significant correlations with MOI and the temperature regime were found in the winter season, whereas the most important relationship between precipitation and MOI was obtained in the summer season. Lag correlation analysis showed that winter MOI is influential on the spring temperature in northwestern Turkey and summer MOI could have an impact on the autumn precipitation. In addition, there are significant winter temperature and summer precipitation differences due to the MOI phases. Finally, the relationship between the MO and North Atlantic Oscillation (NAO) was also investigated. Accordingly, it was realized that the NAO and MO could have similar effects in the winter season particularly in the western part of Turkey. As a result, the MO could have a significant relationship to the temperature and precipitation regime of Turkey.

Research of Human Factors under Automatic ATC System

2014 ◽  
Vol 513-517 ◽  
pp. 2799-2803
Author(s):  
Wei Jun Pan ◽  
Wen Bo Wang ◽  
Dan Wu ◽  
Chen Yu Huang
Keyword(s):  
Correlation Analysis ◽  
Situation Awareness ◽  
Work Experience ◽  
Significant Positive Correlation ◽  
Automation System ◽  
Mutual Trust ◽  
Significance Analysis ◽  
New Generation ◽  
The Impact ◽  
The Relationship

This paper is to assess the impact of ATC automation on controller workload, situation awareness, teamwork and mutual trust, and solve the relationship between human and ATC automation system collaboration. Based on experiment statistics, the method of mathematical statistics has been used to carry on overall analysis, significance analysis and correlation analysis. As a result, in the new generation ATC automation system, the overall level of controllers workload, situation awareness, teamwork and mutual trust is relatively higher than that under traditional condition, along with the increase of the controller work experience, the teamwork consciousness and situation awareness are stronger, the workload is lower, the ATC automation system of mutual trust is higher. Teamwork, workload and mutual trust have a significant positive correlation.

scholarly journals THE RELATIONSHIP BETWEEN MANIPULATION AND DATING VIOLENCE

2021 ◽  
pp. 187-198
Author(s):  
Aslıhan ŞENAY ◽  
Erman KAYAT ◽  
Hande KÜÇÜKSARAÇ ◽  
Mahi ASLAN
Keyword(s):  
Correlation Analysis ◽  
Dating Violence ◽  
Close Relationships ◽  
Significant Positive Correlation ◽  
Pearson Correlation ◽  
Emotional Relationships ◽  
Forensic Case ◽  
Pearson Correlation Analysis ◽  
The Mean ◽  
The Relationship

Manipulation which is a type of social influence occurs when a person influences and operates another person by changing their thoughts or behaviors. Manipulation differs from its purpose. Harmful manipulation has features such as suppressing the person by manipulating the person, restricting free will and showing implicit aggression. At the same time, the manipulator’s motives are hidden and the goal is to benefit the manipulator. Dating violence is defined as being subjected to abuse by husband/ wife, date, girlfriend/boyfriend or ex-partner. The aim of this study is to investigate the relationship between being affected by the manipulation in students’ close relationships and exposure to dating violence in their emotional relationships. This research is descriptive. 200 students between the ages of 18-28 at Yeditepe University participated in the study. Three different questionnaire forms were used to collect data. They are respectively demographic form, being affected by the manipulation questionnaire which consists of 20 questions and the exposure to dating violence questionnaire which consists of 42 questions. The answer to each question has an equal coefficient effect. At the end of the exposure to dating violence questionnaire, there is a description of a forensic case and questions about whether the case was resolved or not. Exposure to dating violence questionnaire consists of 7 sub-categories; emotional, verbal, social, physical, economic, sexual and digital. The mean age of the participants is 22,08±2,03. Participants consist of students who 48% (N=96) are men and 52% (N=204) are women. According to Pearson Correlation analysis; there is a moderately significant positive correlation between exposure to dating violence and being affected by manipulation (r= .319, p <0.001). The findings suggest that when the rate of being affected by the manipulation in the close relationships of participants increases, dating violence increases.

scholarly journals Alkaloid Contents in Epichloë Endophyte-Infected Elymus tangutorum Sampled along an Elevation Gradient on the Qinghai-Tibetan Plateau

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1812
Author(s):  
Qian Shi ◽  
Cory Matthew ◽  
Wenhui Liu ◽  
Zhibiao Nan
Keyword(s):  
Tibetan Plateau ◽  
Endophytic Fungi ◽  
Climatic Factors ◽  
Elevation Gradient ◽  
Alkaloid Production ◽  
Regression Curves ◽  
Temperature And Precipitation ◽  
The Relationship ◽  
Alkaloid Contents ◽  
Epichloë Endophyte

Alkaloids produced by endophytic fungi can have an important influence on agricultural ecology, and can often be affected by climatic factors. At present, there are no studies that have assessed the relationship between alkaloid production and elevation or climatic factors in the Qinghai-Tibetan Plateau. To address this knowledge gap, we explored ergot alkaloid and peramine production in Epichloë-infected (E+) Elymus tangutorum collected from the Qinghai-Tibetan plateau and assessed the relationship between the concentration of these alkaloids and elevation. The effects of temperature and precipitation on these relationships were also investigated. The concentrations of ergonovine, ergine, and peramine ranged from 0.47–0.84, 0.35–1.72 and 9.18–13.00 µg·g−1, respectively. Fitted cubic regression curves describing an arc-pattern across the elevational series were statistically significant for ergine and peramine concentrations. The elevational trend in peramine concentration was linked to mean daily temperature, while the ergine elevational trend was linked to mean precipitation. Our results provide a new understanding of the climatic factors that influence the alkaloid production of endophytic fungi at different elevations in the Qinghai-Tibetan plateau.

scholarly journals TRANSPORT ACCESSIBILITY AS A FACTOR OF TERRITORIAL LOYALTY OF RURAL RESIDENTS OF ALTAI TERRITORY

2020 ◽  
pp. 34-43
Author(s):  
Natalia Victorovna Volkova
Keyword(s):  
Correlation Analysis ◽  
Population Growth ◽  
Natural Population ◽  
Methodological Approach ◽  
Rural Residents ◽  
Rural Districts ◽  
Transport Accessibility ◽  
Definition Of ◽  
The Relationship

The article considers the problems of transport accessibility of peripheral territories, including rural ones. Transport accessibility is positioned by the author as one of the factors of territorial loyalty of the population of these territories. The author provides a methodological approach to assessing the transport accessibility of a territory from the perspective of bus communication between its center and the nearest cities, analyzes the results of assessing transport accessibility of 25 rural districts of the Altai Territory. In addition, the author gives a definition of the phenomenon of territorial loyalty, the measurement of which is proposed to be carried out using two indicators: the coefficients of migration and natural population growth of the territory. The article presents an assessment of the territorial loyalty of the population of the considered regions of the Altai Territory based on statistics from 2017 and 2018. The main conclusions of the article are based on the results of a correlation analysis of the relationship between indicators of transport accessibility and territorial loyalty.

The effect of climatic factors on the radial growth of Japanese ash in northern Hokkaido, Japan

1996 ◽  
Vol 26 (11) ◽  
pp. 2052-2055 ◽  
Author(s):  
K. Yasue ◽  
R. Funada ◽  
T. Kondo ◽  
O. Kobayashi ◽  
K. Fukazawa
Keyword(s):  
Tree Ring ◽  
Radial Growth ◽  
Climatic Factors ◽  
Ring Width ◽  
Growing Season ◽  
Ring Network ◽  
Autoregressive Modeling ◽  
Temperature And Precipitation ◽  
The Relationship ◽  
Residual Chronology

The influence of climate on the radial growth of Japanese ash (Fraxinusmandshurica Rupr. var. japonica Maxim.) in northern Hokkaido, Japan, was investigated. Fifteen trees were selected and ring widths were measured. Standardization and autoregressive modeling were applied to the series of ring widths for isolation of the climatic signal. A response function was calculated for the relationship between residual chronology and monthly temperature and precipitation. In the season that preceded the growth, December precipitation is negatively correlated with ring width. During the growing season, May temperature is negatively correlated with ring width, while both temperature and precipitation in July are positively correlated with ring width. The results reveal the potential usefulness of Japanese ash for reconstruction of past climate in Hokkaido. The chronology of Japanese ash contributes to a development of a tree-ring network in Japan that is still sparse.

Analysis of Maximum Expiratory Flow Volume Curves Using Canonical Correlation Analysis

1985 ◽  
Vol 24 (02) ◽  
pp. 91-100 ◽  
Author(s):  
W. van Pelt ◽  
Ph. H. Quanjer ◽  
M. E. Wise ◽  
E. van der Burg ◽  
R. van der Lende
Keyword(s):  
Correlation Analysis ◽  
Canonical Correlation Analysis ◽  
Canonical Correlation ◽  
Flow Volume ◽  
Non Linear ◽  
Maximum Expiratory Flow ◽  
Expiratory Flow ◽  
Relationship Of ◽  
The Relationship ◽  
Age And Sex

SummaryAs part of a population study on chronic lung disease in the Netherlands, an investigation is made of the relationship of both age and sex with indices describing the maximum expiratory flow-volume (MEFV) curve. To determine the relationship, non-linear canonical correlation was used as realized in the computer program CANALS, a combination of ordinary canonical correlation analysis (CCA) and non-linear transformations of the variables. This method enhances the generality of the relationship to be found and has the advantage of showing the relative importance of categories or ranges within a variable with respect to that relationship. The above is exemplified by describing the relationship of age and sex with variables concerning respiratory symptoms and smoking habits. The analysis of age and sex with MEFV curve indices shows that non-linear canonical correlation analysis is an efficient tool in analysing size and shape of the MEFV curve and can be used to derive parameters concerning the whole curve.

THE EFFECT OF TRADE RECEIVABLES ON THE LIQUIDITY OF THE COMPANY PT. GRAHA TUMARIMA, CITY OF SUKABUMI

2020 ◽  
Author(s):  
endang naryono
Keyword(s):  
Correlation Analysis ◽  
Hypothesis Testing ◽  
Sampling Technique ◽  
Strong Relationship ◽  
T Test ◽  
Financial Statement ◽  
Positive Meaning ◽  
The Relationship ◽  
Purposive Sample ◽  
Analysis Determination

This study examines the influence of receivables on liquidity at PT. Graha Tumarima. Sukabumi City for 5 years, with a sampling technique using a purposive sample in the form of financial statement data from 2010 to 2014 using a table of trade receivables and company liquidity. In this study, researchers refer to the theory of Bambang Riyanto (2008: 94) as the connecting theory of the title. This study aims to determine whether there is a relationship and influence between receivables and liquidity at PT. Graha Tumarima. The research design uses the method of exposing the facto, the method of data collection aims to test the hypothesis by using correlation analysis, determination, regression and hypothesis testing with t-test. The results of this study show the influence of receivables on liquidity is shown by the value of r = 0.888, meaning that receivables have a very strong relationship to liquidity. The nature of the relationship is positive, meaning that if the value of cooperative credit is higher the liquidity will be higher. Conversely, if the value of receivables decreases, liquidity will decrease. The magnitude of the influence of receivables on liquidity is shown by the value of R Square / Determination Coefficient of 0.789 or 78.9% thus the receivables have an effect of 78.9% on cooperative liquidity. Hypothesis testing uses the t test, that t arithmetic = 3.347 while t table = 3.182 means t arithmetic&gt; t table. Means that Ho is rejected and Ha is accepted. There is an influence between the receivables on liquidity at PT. Graha Tumarima, Sukabumi City

Absorption, Wicking and Drying Characteristics of Compression Garments

2015 ◽  
Vol 10 (3) ◽  
pp. 155892501501000 ◽  
Author(s):  
Canan Saricam
Keyword(s):  
Correlation Analysis ◽  
T Test ◽  
Test Analysis ◽  
Drying Characteristics ◽  
Compression Garments ◽  
Production Parameters ◽  
The Relationship

This paper discusses the influence of the production parameters on the moisture related comfort characteristics of the compression garments that differ according to the tension applied during the production and elastane count. Correlation analysis, two sided independent t-test analysis and ANOVA tests were applied to analyze the relationship between the production parameters and comfort characteristics which are absorption, vertical and transfer wicking and drying. It was found that tension and elastane composition affect the comfort characteristics by changing the porosity, thickness and the pathways within the fabric.

scholarly journals Individual differences in working memory capacity are unrelated to the magnitudes of retrocue benefits

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chaoxiong Ye ◽  
Qianru Xu ◽  
Xinyang Liu ◽  
Piia Astikainen ◽  
Yongjie Zhu ◽  
...  
Keyword(s):  
Working Memory ◽  
Individual Differences ◽  
Significant Positive Correlation ◽  
Working Memory Capacity ◽  
Memory Capacity ◽  
Capacity Measurement ◽  
Object Based ◽  
Feature Dimension ◽  
The Relationship ◽  
Internal Attention

AbstractPrevious studies have associated visual working memory (VWM) capacity with the use of internal attention. Retrocues, which direct internal attention to a particular object or feature dimension, can improve VWM performance (i.e., retrocue benefit, RCB). However, so far, no study has investigated the relationship between VWM capacity and the magnitudes of RCBs obtained from object-based and dimension-based retrocues. The present study explored individual differences in the magnitudes of object- and dimension-based RCBs and their relationships with VWM capacity. Participants completed a VWM capacity measurement, an object-based cue task, and a dimension-based cue task. We confirmed that both object- and dimension-based retrocues could improve VWM performance. We also found a significant positive correlation between the magnitudes of object- and dimension-based RCB indexes, suggesting a partly overlapping mechanism between the use of object- and dimension-based retrocues. However, our results provided no evidence for a correlation between VWM capacity and the magnitudes of the object- or dimension-based RCBs. Although inadequate attention control is usually assumed to be associated with VWM capacity, the results suggest that the internal attention mechanism for using retrocues in VWM retention is independent of VWM capacity.

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