Imaging analysis method to quantify leaf deformation in response to sub-lethal rates of dicamba

2021 ◽  
pp. 1-17
Author(s):  
Maggie H. Wasacz ◽  
Lynn M. Sosnoskie ◽  
Matthew T. Elmore ◽  
Thierry E. Besançon
Keyword(s):  
Vegetable Crops ◽  
Analysis Method ◽  
Imaging Analysis ◽  
Target Movement ◽  
Specialty Crops ◽  
Snap Bean ◽  
Visual Rating ◽  
Analysis Technique ◽  
Leaf Deformation ◽  
Novel Method

Abstract Dicamba is a synthetic auxin herbicide that is prone to off-target movement, including drift and volatilization. Due to the increased acreage of dicamba-resistant soybean to control glyphosate-resistant weeds, dicamba drift injury to neighboring vegetable crops is of concern. A method to quantify leaf deformation (often referred to as leaf cupping) caused by dicamba injury was developed and compared to visual rating techniques to determine its accuracy and suitability. A second objective was to determine the relative dicamba sensitivity of several economically important vegetable crops. Soybean, snap bean, tomato, and cucumber were grown in the greenhouse and exposed to dicamba at 0, 56, 112, 280, 560, 1120, and 2240 mg ae ha−1, which is respectively 0, 1/10000, 1/5000, 1/2000, 1/1000, 1/500, and 1/250 of the maximum recommended label rate for soybean application (560 g ae ha−1). Plants were evaluated visually and using an imaging analysis technique where leaf deformation index (LDI) was measured using a leaf area scanner. LDI is calculated by dividing the two-dimensional projection of the area of the leaf in its natural configuration by the area of the flattened leaf. Across all four crops, log-logistic regression analysis indicated the LDI method had lower I50 values with lower standard error, demonstrating the LDI method gives more precise estimates of sensitivity. This novel method provides an objective, quantitative method to measure dicamba drift injury and determine relative sensitivities of valuable specialty crops.

Management of Guidance and Counseling on Learning Discipline

2020 ◽  
Vol 10 (2) ◽  
pp. 60-74
Author(s):  
Muhammad Syauqi Mubarok
Keyword(s):  
Statistical Analysis ◽  
Descriptive Analysis ◽  
Field Studies ◽  
Guidance And Counseling ◽  
Analysis Method ◽  
Vocational High School ◽  
Analysis Model ◽  
Survey Techniques ◽  
Analysis Technique ◽  
Path Analysis Model

This article aims to examine and describe the influence of guidance and counseling management on learning discipline. The method used in this research is descriptive analysis method using survey techniques. Data collection techniques that used are documentation studies and field studies. Moreover, the data analysis technique that has been used to answer the research hypothesis is statistical analysis with a path analysis model. The location of the study was at the Ciledug Vocational High School Al-Musaddadiyah Garut, with 85 respondents taking part in the survey. The results of the discussion show that guidance and counseling management has a positive and significant effect on the discipline of learning

scholarly journals Evaluation of indigenous the nucleopolyhedrovirus (NPV) of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) in combination with chlorantraniliprole against Spodoptera species

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Ghulam Sarwar ◽  
Naeem Arshad Maan ◽  
Muhammad Ahsin Ayub ◽  
Muhammad Rafiq Shahid ◽  
Mubasher Ahmad Malik ◽  
...  
Keyword(s):  
Larval Mortality ◽  
Adult Emergence ◽  
Lethal Concentration ◽  
Pest Species ◽  
Vegetable Crops ◽  
Chemical Insecticide ◽  
Larval Instars ◽  
Novel Method ◽  
High Larval Mortality ◽  
Lepidoptera Noctuidae

Abstract Background The armyworms, Spodoptera exigua (Hübner), and S. litura (Fabricius) (Lepidoptera: Noctuidae) are polyphagous pests of many cash crops. Heavy crop losses have been reported for the fruit and vegetable crops each year owing to the diverse impact on global economies. The present study was aimed to sort out a novel method of pest control using the insect’s own nucleopolyhedrosis virus (NPV) alone and in combination with a new chemistry insecticide chlorantraniliprole. Results In the study, the effect of indigenous isolated nucleopolyhedrovirus (NPV) and the chemical insecticide (chlorantraniliprole) formulations against the 2nd and 4th larval instars of S. litura and S. exigua, collected from the different geographical region of Punjab (Pakistan) province, was evaluated. Three concentrations of the NPV isolate, sub-lethal (1 × 104, 6 × 104 POB ml−1), lethal (3 × 105 POB ml−1), and chlorantraniliprole 0.01 μl l−1, were applied alone and in combination against the 2nd and 4th larval instars of both pest species. The lethal concentration of NPV + chlorantraniliprole exhibited synergistic interaction and caused high larval mortality against both instars, while in all other combinations, additive effect was observed. Moreover, NPV + chlorantraniliprole at lethal concentration exhibited decreased pupation, adult emergence, and egg eclosion. Conclusion The implications of using NPV alone and in combination with an insecticide are discussed briefly in this study.

Electric Resistive Heat Curing of the Fiber-Matrix Interphase in Graphite/Epoxy Composites

1991 ◽  
Author(s):  
Erol Sancaktar ◽  
Weijian Ma ◽  
Steven W. Yurgartis
Keyword(s):  
Carbon Fiber ◽  
Heat Conduction Problem ◽  
Electric Heating ◽  
Single Fiber ◽  
Analysis Method ◽  
Fracture Properties ◽  
Temperature Distributions ◽  
Heat Curing ◽  
Convective Thermal ◽  
Novel Method

Abstract A novel method for tailoring the interphase of carbon fiber-polymer composites by resistive electric heating is presented. The single fiber-epoxy resin tensile test is used to investigate the adhesion and fracture properties of the interphase. Electric resistive heating is shown to increase adhesion and toughness at the interphase region. In analyzing the results, the strength and fracture energy of the interphase are related to the thermal postcure conditions created by resistive electric heating. For this purpose, difference analysis method is used to obtain numerical solution for heat conduction problem in the single fiber test specimen and the temperature distributions are plotted. Improvements obtained using resistive electric heating via carbon fiber are compared with those obtained by postcuring of the whole sample via convective thermal postcuring. The results obtained using these two different postcure methods seem to be similar with electric heating procedure producing superior benefits in both increased toughness and adhesion.

Comparison of myocardial T1 mapping during breath-holding and free-breathing

2021 ◽  
pp. 1-5
Author(s):  
Hideharu Oka ◽  
Kouichi Nakau ◽  
Sadahiro Nakagawa ◽  
Yuki Kobayashi ◽  
Rina Imanishi ◽  
...  
Keyword(s):  
Cross Sections ◽  
T1 Mapping ◽  
Free Breathing ◽  
Breath Holding ◽  
Basal Region ◽  
Analysis Method ◽  
Imaging Analysis ◽  
Myocardial T1 ◽  
The Mean ◽  
Almost All

Abstract Background: T1 mapping is a recently developed imaging analysis method that allows quantitative assessment of myocardial T1 values obtained using MRI. In children, MRI is performed under free-breathing. Thus, it is important to know the changes in T1 values between free-breathing and breath-holding. This study aimed to compare the myocardial T1 mapping during breath-holding and free-breathing. Methods: Thirteen patients and eight healthy volunteers underwent cardiac MRI, and T1 values obtained during breath-holding and free-breathing were examined and compared. Statistical differences were determined using the paired t-test. Results: The mean T1 values during breath-holding were 1211.1 ± 39.0 ms, 1209.7 ± 37.4 ms, and 1228.9 ± 52.5 ms in the basal, mid, and apical regions, respectively, while the mean T1 values during free-breathing were 1165.1 ± 69.0 ms, 1103.7 ± 55.8 ms, and 1112.0 ± 81.5 ms in the basal, mid, and apical regions, respectively. The T1 values were lower during free-breathing than during breath-holding in almost all segments (basal: p = 0.008, mid: p < 0.001, apical: p < 0.001). The mean T1 values in each cross section were 3.1, 7.8, and 7.7% lower during free-breathing than during breath-holding in the basal, mid, and apical regions, respectively. Conclusions: We found that myocardial T1 values during free-breathing were about 3–8% lower in all cross sections than those during breath-holding. In free-breathing, it may be difficult to assess myocardial T1 values, except in the basal region, because of underestimation; thus, the findings should be interpreted with caution, especially in children.

scholarly journals Amplitude domain analysis of strong range and Doppler spread radar echos

2008 ◽  
Vol 26 (8) ◽  
pp. 2419-2426 ◽  
Author(s):  
J. Vierinen ◽  
M. S. Lehtinen ◽  
I. I. Virtanen
Keyword(s):  
Domain Analysis ◽  
Doppler Spread ◽  
Estimation Methods ◽  
Radar Target ◽  
Analysis Method ◽  
Novel Method ◽  
Head Echo

Abstract. We present a novel method for analyzing range and Doppler spread targets in the amplitude domain using linear statistical inversion. The result of the analysis is an estimate of the range dependent amplitude behaviour of the target backscatter during the time that the transmission passes the target. A meteor head echo and strong backscatter from artificially heated regions of the ionosphere are used to demonstrate this novel analysis method. Plans to apply amplitude-domain radar target estimation methods to more complicated noisy underdetermined targets are also briefly discussed.

scholarly journals The Effect Of Milenial Generation Characteristics Of Job Satisfaction Relations And Employee Engagement

2020 ◽  
Vol 1 (4) ◽  
pp. 239-248
Author(s):  
Alfatih Sikki Manggabarani ◽  
Faisal Marzuki ◽  
Mahendro
Keyword(s):  
Employee Engagement ◽  
Random Sampling ◽  
Employee Satisfaction ◽  
Sampling Methods ◽  
Simple Random Sampling ◽  
Partial Least Square ◽  
Least Square ◽  
Analysis Method ◽  
Partial Least Square Analysis ◽  
Analysis Technique

This research is a quantitative study that aims to determine the Millennial Generation Characteristics of Employee Engagement. The population in this study The study was conducted by taking samples of Millennials who are actively working at Micro Finance companies with a total of 150 respondents. The sample size was taken as many as 150 respondents, with probability sampling methods especially simple random sampling. Data collection was carried out through questionnaires. The analysis technique used is the PLS (Partial Least Square) analysis method. The results of this study indicate that the value of R- Square (R2) Employee Engagement is 0.786 and Employee Satisfaction is 0.647 thus indicating that the contribution of Grit, Worklife Balance, and Jon Resources variables to Employee Engagement and Employee Satisfaction are 0.786 or 78.6% and 0.647 or 64.7%. And the rest is influenced by other factors not examined.

scholarly journals EXAMINATION OF GRADUATE THESES CONDUCTED ON PRESCHOOL INCLUSION BETWEEN 2016-2020 IN TURKEY

2021 ◽  
Vol 4 (1) ◽  
pp. 88-99
Author(s):  
Mahide Özçelik ◽  
Mukaddes Sakallı Demirok
Keyword(s):  
Higher Education ◽  
Qualitative Research ◽  
Data Analysis ◽  
Document Analysis ◽  
Research Trends ◽  
Future Research ◽  
Research Model ◽  
Analysis Method ◽  
Data Collection Tool ◽  
Analysis Technique

  The aim of this study is to examine the current research trends in graduate theses on preschool inclusion in Turkey. Document analysis technique, one of the qualitative research methods, was used in the research. It was carried out on 31 graduate theses, which were obtained as a result of scanning the thesis archive of the Higher Education Council (YÖK) and were open to access between 2016 to 2020. The search was carried out by typing "pre-school integration" into the search engine of the Higher Education Institution's thesis archive. The theses included in the study were analyzed using the thesis analysis form prepared beforehand by the researchers. In the prepared form, the theses were analyzed according to the year, thesis level, university, institute, department, thesis supervisor title, research model, number of participants, data collection tool, data analysis method, and domestic and foreign references. The findings obtained within the framework of the examination were interpreted with percentage and frequency tables, and recommendations were made for future research. Key Words: Mainstreaming, preschool, thesis, document analysis.

scholarly journals Macroeconomic Factors and Influence on Stock Return That Impact the Corporate Values

2020 ◽  
Vol 9 (1) ◽  
pp. 68-75 ◽  
Author(s):  
Fariz Mohamad Iqmal ◽  
Ivan Gumilar Sambas Putra
Keyword(s):  
Stock Return ◽  
Sampling Method ◽  
Linear Regression Analysis ◽  
Analysis Method ◽  
Corporate Values ◽  
Macroeconomic Factors ◽  
Analytical Technique ◽  
Analysis Technique ◽  
Comprehensive Picture ◽  
The Relationship

This research aims to determine the influence of macroeconomic variables on stock return and its impact on corporate values. The population in this research is the sector of agriculture because based on the results of the sector's observation, the most severe decline in performance among others. Further sampling is done by the purposive sampling method, so from 22 companies that listings only 15 companies that meet the criteria. The analytical technique to be used in this study is to use a double linear regression analysis technique expanded with a pathway analysis method to obtain a comprehensive picture of the relationship between variables of one variable with other. We find is an inflation and interest rate negatively and significantly affecting the return of shares. The exchange rate positively and significantly affects the stock return and the influential stock return rate positively and significant to the corporate values.

scholarly journals PERAN BADAN USAHA MILIK DESA (BUMDES) SEBAGAI UPAYA PENGEMBANGAN EKONOMI MASYARAKAT DESA PEJANGGIK

2021 ◽  
Vol 7 (1) ◽  
pp. 96
Author(s):  
Agus Salihin
Keyword(s):  
Public Awareness ◽  
Economic Empowerment ◽  
Economic Welfare ◽  
Analysis Method ◽  
Data Presentation ◽  
Village Community ◽  
Analysis Technique ◽  
Village Communities ◽  
Economic Improvement

Pejanggik Village-Owned Enterprises (BUMDes) is an institution that can assist the community in economic empowerment, especially in village communities to achieve economic welfare and village income. So the purpose of this study is to determine the role of Village-Owned Enterprises as an effort to develop the economy of the Pejanggik Village community. This type of research is descriptive qualitative research. Sember research data consists of BUMDes managers and communities who receive business development assistance. The data collection techniques consist of observation, interview and documentation techniques. While the data analysis technique, the researcher used the analysis method by Milles and Hubarman which included data presentation, data reduction and conclusion drawing. The results of the study can be explained that the role of BUMDes Desa Pejanggik is not going well and has not been able to significantly improve the economy of the Pejanggik Village community. This is due to the lack of available capital, public awareness and inadequate human resources. Keywords: BUMDes, Economic Improvement, Society

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