Effect of Vibration on Rapeseed Header Loss and Optimization of Header Frame

2021 ◽  
Vol 64 (4) ◽  
pp. 1247-1258
Author(s):  
Yang Li ◽  
Lizhang Xu ◽  
Zhipeng Gao ◽  
En Lu ◽  
Yaoming Li
Keyword(s):  
Modal Analysis ◽  
Engine Speed ◽  
Vibration Measurement ◽  
List Type ◽  
Positive Correlation ◽  
Combine Harvester ◽  
Analysis System ◽  
Combine Harvesters ◽  
Relationship Of ◽  
The Relationship

HighlightsThe relationship of vibration and header loss was studied by multi-point vibration measurement and loss collection test.There was an approximately linear positive correlation between total header vibration and total rapeseed header loss.The header frame was analyzed and optimized through modal simulation and testing.The total rapeseed header loss of the improved header was reduced by 33.2% to 46.9%.Abstract. In view of the current large rapeseed header losses of rape combine harvesters, the effects of the header on rapeseed header loss were studied from the perspective of vibration. First, the vibrations at various measuring points on the header during rape harvest were studied using a data acquisition and analysis system while performing collection tests of rapeseed header loss with the sample slot method. The relationships between total header vibration and total rapeseed header loss and between vertical cutter vibration and rapeseed vertical cutter loss were shown to have a positive correlation, and they all increased with the increase in engine speed. Vertical cutter loss accounted for 31.2% to 42.4% of the total rapeseed header loss. Modal analysis and optimization of the header frame were then performed by simulation and test. The natural frequencies of the first-order and second-order modes of the optimized header were increased, and the possibility of resonance with other working parts was eliminated. Finally, the improved header was tested during rape harvest. The results showed that the total vibration of the improved header was reduced by 19.9% to 43.9%, and the total rapeseed header loss was reduced by 33.2% to 46.9%. The vertical cutter vibration was reduced by 30.5% to 49.8%, and the rapeseed vertical cutter loss was reduced by 20.8% to 34.7%. In addition, the vibration and rapeseed loss of the improved header had relatively slow rates of increase with the increase in engine speed. The method of reducing rapeseed loss by reducing the header vibration achieved an obvious and positive effect. Keywords: Frame optimization, Modal analysis, Rape combine harvester, Rapeseed header loss, Vibration.

scholarly journals Study on the relationship of depression, anxiety, lifestyle and eating habits with the severity of reflux esophagitis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Rongxin Wang ◽  
Jing Wang ◽  
Shuiqing Hu
Keyword(s):  
Quality Of Life ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Logistic Regression Analysis ◽  
Reflux Esophagitis ◽  
Eating Habits ◽  
Positive Correlation ◽  
Relationship Of ◽  
The Relationship

Abstract Background The etiology of reflux esophagitis (RE) is multi-factorial. This study analyzed the relationship of depression, anxiety, lifestyle and eating habits with RE and its severity and further explored the impact of anxiety and depression on patients’ symptoms and quality of life. Methods From September 2016 to February 2018, a total of 689 subjects at Xuanwu Hospital Capital Medical University participated in this survey. They were divided into the RE group (patients diagnosed with RE on gastroscopy, n = 361) and the control group (healthy individuals without heartburn, regurgitation and other gastrointestinal symptoms, n = 328). The survey included general demographic information, lifestyle habits, eating habits, comorbidities, current medications, the gastroesophageal reflux disease (GERD) questionnaire (GerdQ), the Patient Health Questionnaire-9 depression scale and the General Anxiety Disorder-7 anxiety scale. Results The mean age and sex ratio of the two groups were similar. Multivariate logistic regression analysis identified the following factors as related to the onset of RE (p < 0.05): low education level; drinking strong tea; preferences for sweets, noodles and acidic foods; sleeping on a low pillow; overeating; a short interval between dinner and sleep; anxiety; depression; constipation; history of hypertension; and use of oral calcium channel blockers. Ordinal logistic regression analysis revealed a positive correlation between sleeping on a low pillow and RE severity (p = 0.025). Depression had a positive correlation with the severity of symptoms (rs = 0.375, p < 0.001) and patients’ quality of life (rs = 0.306, p < 0.001), whereas anxiety showed no such association. Conclusions Many lifestyle factors and eating habits were correlated with the onset of RE. Notably, sleeping on a low pillow was positively correlated with RE severity, and depression was positively related to the severity of symptoms and patients’ quality of life.

The Relationship between Resilience and Mental Health: the Mediating Effect of Positive Emotions

2018 ◽  
Vol 2 (3) ◽  
pp. 87
Author(s):  
Zhun Gong ◽  
Lichao Yu ◽  
Jonathan W Schooler
Keyword(s):  
Mental Health ◽  
Negative Correlation ◽  
Psychological Health ◽  
Positive Emotions ◽  
Mediating Effect ◽  
Depression And Anxiety ◽  
Cross Sectional ◽  
Positive Correlation ◽  
Relationship Of ◽  
The Relationship

<p class="tgt"><em>To investigate the relationship of resilience, positive emotions and mental health, and the relationship of resilience, positive emotion and three sub-dimensions of mental health: self-affirmation, depression and anxiety. In this study, the existing cross-sectional data, select the Beijing Forestry University data as samples. In this study, questionnaire survey a random sample of 199 undergraduate students of Beijing Forestry University, they uniform application three Scale Surveying, PANAS, CD-RISC, GHQ-20. According from the study, (1) resilience, positive mood and general health are related where resilience and positive emotions between the resilience. General psychological health, positive emotions and general mental health</em><em>?</em><em>it is positively correlated. (2) Resilience and self-affirmation exists, positive correlation with depression and anxiety, respectively negative correlation. Between positive emotions and self-affirmation the positive correlation with anxiety negative correlation. (3) Part mediating effect of positive emotions exist between resilience and self-affirmation, resilience can be made to self-affirmation prediction coefficient from 0.042 down to 0.036. Therefore, this study concluded that resilience undergraduates can have an impact on mental health through the intermediary variable positive emotions.</em></p>

scholarly journals Students’ Perception and Readiness towards Inter-Professional Learning

2018 ◽  
Vol 5 (3) ◽  
pp. 192-200
Author(s):  
Javaria Mukhtar ◽  
Muhammad Hussain ◽  
Kousar Perveen ◽  
Muhammad Afzal ◽  
Syed Amir Gilani
Keyword(s):  
Professional Learning ◽  
Professional Education ◽  
Cross Sectional Study ◽  
Team Work ◽  
Strong Positive Correlation ◽  
Cross Sectional ◽  
Positive Correlation ◽  
Undergraduate Nursing ◽  
Relationship Of ◽  
The Relationship

Inter-professional learning is helpful for students to identify other professionals for team work and collaboration which results in improved patient care out come and also improve Communication among health professionals and patients. The purpose of this study was to explore the relationship between readiness and perception of students towards inter-professional learning. A correlation, cross-sectional study was done with Two hundred and eighty five undergraduate Nursing and Paramedical students from Jan, 2018 to May, 2018. Convenient sampling was used to collect data. The Readiness for Inter-Professional Learning Scale (RIPLS) and Interdisciplinary Education Perception Scale (IEPS) were used to measure the readiness and perception of students regarding inter-professional leaning. The data were analyzed using software Statistical Package for Social Science (SPSS) (Version 21). Spearman rho correlation test was used to explore the relationship of variables. The results showed statically significant positive correlation between the readiness and Perception of students regarding inter-professional learning (p=.000). This study indicated that there is strong positive correlation between readiness and perception of students towards inter-professional learning but students have least response towards team work and collaboration. Study suggests that inter-professional education should introduce in the curriculum of nursing and paramedical students to promote team work and share learning.Int. J. Soc. Sc. Manage. Vol. 5, Issue-3: 192-200

Hubungan berat lahir anak, rasio jenis kelamin anak, dan umur induk kerbau terhadap lama kebuntingan

2020 ◽  
Vol 9 (2) ◽  
pp. 35
Author(s):  
Yendraliza Yendraliza ◽  
Muhamad Rodiallah ◽  
Zumarni Zumarni
Keyword(s):  
Birth Weight ◽  
Standard Deviation ◽  
Sex Ratio ◽  
Artificial Insemination ◽  
Average Length ◽  
Positive Correlation ◽  
Relationship Of ◽  
The Relationship ◽  
Descriptive Method

This study was conducted to determine the relationship of birth weight of calves, sex ratio of the calves, and the age of the dam to the length of pregnancy in buffaloes resulting from artificial insemination in Kampar District. The method used in this research is the descriptive method by displaying the average and standard deviation. The total number of buffaloes that were artificially inseminated in 2018 and gave birth in 2019 was 21 buffalo-cows. Data were analyzed with the Pearson Product Moment (PPM) correlation. The parameters measured in this study were the length of pregnancy, calf birth weight, calf sex ratio, and dam’s age. The results showed a positive correlation between the birth weight of the calves, sex ratio of the calves, and the age of the dam to the length of pregnancy of 1.4%, with an average length of pregnancy, calf birth weight, and sex ratio of 351.81 days, 27.38 kg, and 1: 1 respectively.

The Relationship of God Image to Level of Object Relations Development

1994 ◽  
Vol 22 (4) ◽  
pp. 352-371 ◽  
Author(s):  
Beth Fletcher Brokaw ◽  
Keith J. Edwards
Keyword(s):  
Object Relations ◽  
Undergraduate Students ◽  
Objective Measure ◽  
Significant Negative Correlation ◽  
God Image ◽  
Homogeneous Population ◽  
Positive Correlation ◽  
Images Of God ◽  
Relationship Of ◽  
The Relationship

This study empirically tested the relationship of God image to level of object relations development in a Christian sample. Ninety-two undergraduate students from a religiously homogeneous population were tested with three measures of God image and three measures of object relations development. It was hypothesized that level of object relations development would show a significant positive correlation with images of God as loving and benevolent and a significant negative correlation with images of God as wrathful, controlling, and irrelevant. Scores on each of the God image instruments were correlated with scores on each of the measures of object relations development. The objective measure of object relations, the Ego Function Assessment Questionnaire-Revised (EFAQ-R), correlated significantly with all three measures of God image in the directions hypothesized. The two projective measures of object relations, the Rorschach and the Comprehensive Object Relations Profile (CORP), showed only a few significant correlations with God image scales. The strongest finding of this study was the consistent, positive correlation of multiple measures of loving God images with level of object relations development on the EFAQ-R.

A Study on Relationship of Landslide Occurrence and Rainfall

2013 ◽  
Vol 438-439 ◽  
pp. 1200-1204 ◽  
Author(s):  
Hui Wang ◽  
Yu Cheng Zhang ◽  
Hai Ying Hu
Keyword(s):  
Meteorological Data ◽  
Daily Rainfall ◽  
Occurrence Rate ◽  
Geological Data ◽  
Rainfall Distribution ◽  
Positive Correlation ◽  
Landslide Occurrence ◽  
Time Relationship ◽  
Relationship Of ◽  
The Relationship

Based on the analysis of geological data and meteorological data of landslide, the mechanism of rainfall-induced landslides was analyzed, and the relationship between landslide and rainfall was further discussed, including the landslides and rainfall distribution, the relationship between landslide and frequency of rainstorm, and the time relationship between landslide and rainfall. The results show that the probability of landslide occurrence and the quantity of landslides have positive correlation with rainfall. The landslides mainly occur from May to September in which the monthly mean rainfall is large. Meanwhile, landslide occurrence is closely related to the characteristics of rainfall of that day and rainfall of early days. When the daily rainfall exceeds 50mm or 10 days accumulative rainfall exceeds 100mm, the landslide is prone to occur and the occurrence rate of the latter is higher.

scholarly journals Design and Analysis of AC14 Ship Anchor

2021 ◽  
Vol 2070 (1) ◽  
pp. 012235
Author(s):  
Ramu Kandregula ◽  
B Hemanth ◽  
A Harikishan
Keyword(s):  
Modal Analysis ◽  
Solid Modeling ◽  
Von Mises Stress ◽  
Test Load ◽  
Maximum Deformation ◽  
Rest Position ◽  
Different Types ◽  
Von Mises ◽  
Relationship Of ◽  
The Relationship

Abstract A Ship’s anchor makes a ship to be at a fixed location against currents and winds when ship is in rest position. Purpose of anchor is to restrict the drifting of ship, which is occurs due to the currents. Even though there are many different types of anchor, present paper intended to do design and analysis on stockless anchor AC14 type. Project aims to determine the equivalent von-mises stress and maximum deformation in anchor when subjected to proof test. Proof test load is decided based on the mass of the anchor. (Reference is taken for the relationship of proof test load and mass of the anchor. Solid modeling of Stockless ship anchor model is carried out on NX 11.0 and modal analysis of ship anchor is carried out using ANSYS 16.0

scholarly journals HUBUNGAN AKTIVITAS PENDUKUNG TERHADAP KUALITAS VISUAL KORIDOR JALAN GAJAH MADA PONTIANAK

2021 ◽  
Vol 9 (2) ◽  
pp. 369
Author(s):  
Riesa Rizki Amalia ◽  
Bontor Jumaylinda BR Gultom ◽  
Muhammad Nurhamsyah
Keyword(s):  
Space Syntax ◽  
Visual Quality ◽  
Activity Relationship ◽  
Street Vendors ◽  
Positive Correlation ◽  
To Come ◽  
Relationship Of ◽  
The Relationship ◽  
The City

This research is based on concerns about the existence of supporting activities will have an impact on the visual quality of a commercial road corridor. Activities that appear in commercial corridors are trade and service activities as well as activity support. This activity support will affect the development of the city so that it is more lively, continuous, and peaceful. In a corridor these activities can bring a lot of visitors. The large number of visitors indicates that the corridor has an attraction. The method used in this study is a method of mapping behavior and space syntax combined with questionnaires. Then the results of these data are correlated so as to know the relationship of supporting activities to the visual quality of corridors. The findings of this study are in the form of supporting activity relationship to the visual quality of the corridor of Jalan Gajah Mada Pontianak. The correlation of data between placed centered mapping and space syntax, between placed centered mapping and questionnaires, as well as between questionnaires and space syntax, showed a positive correlation. The number and position of supporting activities in the form of pkl can increase movement in an area. High movement in space syntax can indicate that the visual quality of an area has a high value. An easy-to-recognize space will attract visitors to come and supporting activities in the form of street vendors can be a movement generator and attractor.

scholarly journals Methodology for net profitability analysis

2019 ◽  
pp. 79-88
Author(s):  
Gintarė Labonaitė ◽  
Rasa Subačienė
Keyword(s):  
Factors Affecting ◽  
Profitability Analysis ◽  
Equity Ratio ◽  
The Subject ◽  
Analysis System ◽  
Relationship Of ◽  
The Relationship ◽  
Profitability Ratios ◽  
Information Collecting ◽  
Selection Of

Every company, regardless of the type or size of business is aiming to achieve the best results. These results are usually related to the profit and the ways to improve it. However, profit line in absolute terms is not sufficient enough as an indicator of the company's performance. Therefore, instruments expressed in profitability ratios are used. While different authors reveal various aspects of the concept of profitability, overall profitability ratios could be assessed as the evaluation of activities‘ results and the relationship of the means used to achieve it. Net profitability ratio is one of the main cornerstones in the process of company‘s performance evaluation. It provides information on the efficiency of company‘s main, other, financial and investment activities - the final result. In addition, the ratio helps to evaluate efficiency of financial resources management. The analysis of net profitability ratio and factors influencing it may help to determine which element could be adjusted or changed in order to improve the company‘s performance and to gain higher profits. The article investigates evaluation of net profitability, provides methodology for net profitability analysis, based on the summary of the various authors researches of pyramid systems on influence of various factors to the subject ratios. Methodology of net profitability analysis includes such stages as selection of companies for comparison of information, assessing information sources, application of pyramid analysis system, evaluation of results based on selected company‘s data and data of Department of Statistics, conclusions and suggestions. Chosen ratios of pyramid analysis, which reveal factors affecting the net profitability, reflects aspects of evaluation of efficiency of the assets, equity and current assets to equity ratio. Information collecting, comparison, grouping, systematization, generalization and pyramid analysis methods were used in the research.

scholarly journals White matter correlates of hemi-face dominance in happy and sad expression

2017 ◽  
Author(s):  
Stefano Ioannucci ◽  
Nathalie George ◽  
Patrick Friedrich ◽  
Leonardo Cerliani ◽  
Michel Thiebaut de Schotten
Keyword(s):  
White Matter ◽  
Emotional Expression ◽  
Individual Variability ◽  
Cerebral White Matter ◽  
List Type ◽  
Brain Hemispheres ◽  
Neural Underpinnings ◽  
Human Participants ◽  
Relationship Of ◽  
The Relationship

AbstractThe neural underpinnings of human emotional expression are thought to be unevenly distributed among the two brain hemispheres. However, little is known on the anatomy supporting this claim, particularly in the cerebral white matter. Here, we explored the relationship between hemi-face dominance in emotional expression and cerebral white matter asymmetries in 33 healthy participants. Measures of emotional expression were derived from pictures of the participant’s faces in a ‘happy smiling’ and a ‘sad frowning’ conditions. Chimeric faces were constructed by mirroring right and left hemi-faces, as done in previous studies, resulting in a left mirrored and right mirrored chimeric face per picture. To gain measures of hemi-face dominance per participant, a jury of 20 additional participants rated which chimeric face shows higher intensity of emotional expressivity, by marking a 155mm line between the two versions. Measures of the asymmetry of the uncinate, the cingulum and the three branches of superior longitudinal fasciculi were derived from diffusion weighted imaging tractography dissections. Group effect analyses indicated that the degree of asymmetry in emotional expression was not as prominent as reported in the literature and showed a large inter-individual variability. The degree of asymmetry in emotional expression was, however, significantly associated with the asymmetries in connective properties of the fronto-temporal and fronto-parietal tracts, specifically the uncinate fasciculus and the first branch of the superior longitudinal fasciculus. Therefore, this result raises novel hypotheses on the relationship of specific white matter tracts and emotional expression, especially their role in mood disorders.Ethical statementNone of the authors have a conflict of interestData collection from human participants was approved by the Comité de Protection des Personnes “CPP Ile de France V”All participants provided written informed consentFunding from ERC (grant agreement No. 818521) and “Agence Nationale de la Recherche” [grants numbers ANR-13-JSV4-0001-01 an ANR-10-IAIHU-06]

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