scholarly journals Rainfall and Temperature Trend Analysis by Mann–Kendall Test and Significance for Rainfed Cereal Yields in Northern Togo

Sci ◽  
2020 ◽  
Vol 2 (4) ◽  
pp. 74
Author(s):  
Agossou Gadedjisso-Tossou ◽  
Komlavi II Adjegan ◽  
Armand Ketcha Malan Kablan
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Maize Yield ◽  
Temperature Variability ◽  
Annual Rainfall ◽  
Maximum Temperature ◽  
Mk Test ◽  
Increasing Trend ◽  
Negative Effect

This study investigates the trend in monthly and annual rainfall, minimum and maximum temperature (Tmin and Tmax) using the Mann–Kendall (MK) test and Sen’s slope (SS) method and evaluates the significance of their variability for maize, sorghum and millet yields in northern Togo employing multiple regression analysis. The historical data of Kara, Niamtougou, Mango and Dapaong weather stations from 1977 to 2012 were used. Four non-parametric methods—Alexandersson’s Standard Normal Homogeneity Test (SNHT), Buishand’s Range Test (BRT), Pettitt’s Test (PT) and Von Neumann’s Ratio Test (VNRT)—were applied to detect homogeneity in the data. For the data which were serially correlated, a modified version of the MK test (pre-whitening) was utilised. Results showed an increasing trend in the annual rainfall in all four locations. However, this trend was only significant at Dapaong (p < 0.1). There was an increasing trend in Tmax at Kara, Mango and Niamtougou, unlike Dapaong where Tmax revealed a significant decreasing trend (p < 0.01). Similarly, there was an increasing trend in Tmin at Kara, Mango and Dapaong, unlike Niamtougou where Tmin showed a non-significant decreasing trend (p > 0.05). Rainfall in Dapaong was found to have increased (7.79 mm/year) more than the other locations such as Kara (2.20 mm/year), Niamtougou (4.57 mm/year) and Mango (0.67 mm). Tmax increased by 0.13, 0.13 and 0.32 °C per decade at Kara, Niamtougou and Mango, respectively, and decreased by 0.20 per decade in Dapaong. Likewise, Tmin increased by 0.07, 0.20 and 0.02 °C per decade at Kara, Mango and Dapaong, respectively, and decreased by 0.01 °C per decade at Niamtougou. Results of multiple regression analysis revealed nonlinear yield responses to changes in rainfall and temperature. Rainfall and temperature variability affects rainfed cereal crops production, but the effects vary across crops. The temperature has a positive effect on maize yield in Kara, Niamtougou and Mango but a negative effect on sorghum in Niamtougou and millet in Dapaong, while rainfall has a negative effect on maize yield in Niamtougou and Dapaong and millet yield in Mango. In all locations, rainfall and temperature variability has a significant effect on the cereal crop yields. There is, therefore, a need to adopt some adaptation strategies for sustainable agricultural production in northern Togo.

scholarly journals Rainfall and Temperature Trend Analysis by Mann–Kendall Test and Significance for Rainfed Cereal Yields in Northern Togo

Sci ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 17
Author(s):  
Agossou Gadedjisso-Tossou ◽  
Komlavi II Adjegan ◽  
Armand Ketcha Malan Kablan
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Maize Yield ◽  
Temperature Variability ◽  
Annual Rainfall ◽  
Maximum Temperature ◽  
Mk Test ◽  
Increasing Trend ◽  
Negative Effect

This study investigates the trend in monthly and annual rainfall, minimum and maximum temperature (Tmin and Tmax) using the Mann–Kendall (MK) test and Sen’s slope (SS) method and evaluates the significance of their variability for maize, sorghum and millet yields in northern Togo employing multiple regression analysis. The historical data of Kara, Niamtougou, Mango and Dapaong weather stations from 1977 to 2012 were used. Four non-parametric methods—Alexandersson’s Standard Normal Homogeneity Test (SNHT), Buishand’s Range Test (BRT), Pettitt’s Test (PT) and Von Neumann’s Ratio Test (VNRT)—were applied to detect homogeneity in the data. For the data which were serially correlated, a modified version of the MK test (pre-whitening) was utilised. Results showed an increasing trend in the annual rainfall in all four locations. However, this trend was only significant at Dapaong (p < 0.1). There was an increasing trend in Tmax at Kara, Mango and Niamtougou, unlike Dapaong where Tmax revealed a significant decreasing trend (p < 0.01). Similarly, there was an increasing trend in Tmin at Kara, Mango and Dapaong, unlike Niamtougou where Tmin showed a non-significant decreasing trend (p > 0.05). Rainfall in Dapaong was found to have increased (7.79 mm/year) more than the other locations such as Kara (2.20 mm/year), Niamtougou (4.57 mm/year) and Mango (0.67 mm). Tmax increased by 0.13, 0.13 and 0.32 °C per decade at Kara, Niamtougou and Mango, respectively, and decreased by 0.20 per decade in Dapaong. Likewise, Tmin increased by 0.07, 0.20 and 0.02 °C per decade at Kara, Mango and Dapaong, respectively, and decreased by 0.01 °C per decade at Niamtougou. Results of multiple regression analysis revealed nonlinear yield responses to changes in rainfall and temperature. Rainfall and temperature variability affects rainfed cereal crops production, but the effects vary across crops. The temperature has a positive effect on maize yield in Kara, Niamtougou and Mango but a negative effect on sorghum in Niamtougou and millet in Dapaong, while rainfall has a negative effect on maize yield in Niamtougou and Dapaong and millet yield in Mango. In all locations, rainfall and temperature variability has a significant effect on the cereal crop yields. There is, therefore, a need to adopt some adaptation strategies for sustainable agricultural production in northern Togo.

PENGARUH LEVERAGE; LIKUIDITAS, SAHAM PUBLIK DAN KOMITE AUDIT INDEPENDEN TERHADAP LUAS PENGUNGKAPAN SUKARELA DALAM LAPORAN Ta,TAl HlYUatNAN

2007 ◽  
Vol 3 (2) ◽  
pp. 93
Author(s):  
Mujiyono Mujiyono ◽  
Magdalena Nany
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Empirical Evidence ◽  
Multiple Regression ◽  
Voluntary Disclosure ◽  
Audit Committee ◽  
Annual Report ◽  
Negative Effect ◽  
Positive Effect ◽  
Independent Audit

Company's aniual report is one of the information that connecting the company's management and their stockholders. The study about voluntary disclosure in an.annual report will provide some insight about disclosure practiees in Indonesian firms. The objective of this research was to give empirical evidence about the effects of leverage, liquidity,firm public own proportion and independent audit committee proportion on voluntary disclosure both partially and simultaneously. Seventy four companies were analyed by multiple regression analysis. The resul*show that leverage insigniJicantly hat positive effect on voluntarydisclosure. Liquidity also insignificantly has positive effect on voluntary diselosure. Butfirm publi  own proportion insignificantly has negative effect on voluntary disclosure. Independent audit committee proportion also insigniJicantly has negative effect on voluntary disclosure. The result also show that leverage, liquidity, firm public own proportion and independent audit commitiee pioportion simultaneousiy have insignificant effect on voluntary disclosureKqwords: annual report, vol4ntary disclosure, leverage, tiquidity,finn public own proportion, independent audit committeeproportion

scholarly journals THE EFFECT OF ATTITUDES, ORGANIZATIONAL COMMITMENTS, SEVERITY OF CHEATING LEVELS, PERSONAL COST OF REPORTING AND JOB COMMITMENT TO WHISTLEBLOWING INTENTIONS

ACCRUALS ◽  
2020 ◽  
Vol 4 (01) ◽  
pp. 77-95
Author(s):  
Komarudin Mustopa ◽  
Asep Kurniawan ◽  
Trisandi Eka Putri
Keyword(s):  
Regression Analysis ◽  
Organizational Commitment ◽  
Data Collection ◽  
Hypothesis Testing ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Job Commitment ◽  
Personal Cost ◽  
Negative Effect ◽  
Village Government

This study aims to determine the effect of Attitudes, Organizational Commitments, Severity of Cheating Levels, Personal Cost of Reporting and Professional Commitment to whistleblowing intentions. Data collection techniques are questionnaires. The population in this study were all Village government apparatus in Subang Regency and the sample in this study were 200 respondents. Hypothesis testing uses multiple regression analysis. The results of this study indicate: (1) attitude influences the intention to conduct whistleblowing; (2) organizational commitment does not affect the intention to conduct whistleblowing; (3) Fraud severity level influences the intention to conduct whistleblowing; Personal Cost of Reporting has a negative effect on the intention to do a whistleblowing; (5) Job commitment influences the intention to conduct whistleblowing

scholarly journals Trend Analysis of Precipitation and Temperature over Different Districts of Karnataka: An Aid to Climate Change Detection and Cropping System Option

2020 ◽  
pp. 15-25
Author(s):  
S. Sridhara ◽  
Pradeep Gopakkali ◽  
R. Nandini
Keyword(s):  
Minimum Temperature ◽  
Monsoon Season ◽  
Cropping System ◽  
Weather Conditions ◽  
Kendall Test ◽  
Annual Rainfall ◽  
Maximum Temperature ◽  
Land Preparation ◽  
Mk Test ◽  
Increasing Trend

Aims: To know the rainfall and temperature trend for all the districts of Karnataka state to develop suitable coping mechanisms for changing weather conditions during the cropping season. Study Design: The available daily data of rainfall (1971-2011) and minimum and maximum temperature (1971-2007) for each district was collected from NICRA-ICAR website. A non-parametric model such as the Mann-Kendall (MK) test complemented with Sen’s slope estimator was used to determine the magnitude of the trend. Place and Duration of Study: The rainfall data of 41 years (1971-2011) and temperature data of 37 years (1971-2007) was collected for all 27 districts of Karnataka. Methodology: Basic statistics related to rainfall like mean, standard deviation (SD), the coefficient of variation (CV) and the percentage contribution to annual rainfall were computed for monthly and season-wise. Mann-Kendall test was used to detect trend for rainfall as well as temperature. Results: An increasing trend in rainfall during winter, monsoon and annual basis for all most all the districts of Karnataka and decreasing trend of rainfall during pre and post-monsoon season was noticed. An early cessation of rainfall during September month in all most all the districts of Karnataka was observed. Similarly, monthly mean, maximum and the minimum temperature had shown an increasing trend over the past 37 years for all the districts of Karnataka. Conclusion: The more variation in rainfall during the pre-monsoon season was observed, which is more important for land preparation and other operations. The increasing trend of maximum and minimum temperature throughout the year may often cause a reduction in crop yield. It is necessary to change crops with its short duration varieties in order to avoid late season drought.

scholarly journals The Effect of Audit Technique, Auditor Skill and Role of Whistleblower on Effectiveness of Government Audit

2019 ◽  
Vol 9 (2) ◽  
pp. 1525-1530
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Significant Influence ◽  
Statistical Software ◽  
Capital Region ◽  
Purposive Sampling ◽  
Negative Effect ◽  
Representative Office

This research sought to analyze how audit technique applied, auditors’ ability owned, and the role of whistleblower affect the effectiveness of investigative audit implementation in fraud disclosure. The technique used for obtaining the data was purposive sampling by distributing and collecting total of 87 questionnaires to the auditors who work at State Development Audit Agency (BPKP) Representative Office of Special Capital Region of Jakarta and Indonesian Supreme Audit Institution (BPK) in Jakarta. Data collected was processed by using statistical software with the method of multiple regression analysis. The result revealed that partially, auditors’ ability and the role of whistleblower have significant effect on effectiveness of investigative audit implementation in fraud disclosure with the auditors’ ability occured to be the most dominant variable. Meanwhile, audit technique has negative effect. Silmutaneously, it was discovered that the three variables have significant influence on effectiveness of investigative audit implementation in fraud disclosure.

scholarly journals ANALISIS PENGARUH KINERJA LINGKUNGAN DAN KINERJA KEUANGAN TERHADAP PENGUNGKAPAN LAPORAN KEBERLANJUTAN PADA PERUSAHAAN NONKEUANGAN YANG TERDAFTAR DI BURSA EFEK INDONESIA

2019 ◽  
Vol 6 (2) ◽  
pp. 66-85
Author(s):  
Tusiyati Tusiyati
Keyword(s):  
Regression Analysis ◽  
Financial Performance ◽  
Hypothesis Testing ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Environmental Performance ◽  
Stock Exchange ◽  
Negative Effect ◽  
The Impact ◽  
Sustainability Report

This study aimed to determine the impact of environmental performancemeasured by PROPER (Program Penilaian Peringkat Kinerja Perusahaan dalamPengelolaan Lingkungan Hidup) and financial performance on disclosure ofsustainability report. Sustainability Report (SR) measured by 46 items disclosurestated on G4 GRI (2013), while financial performance measured by using ratio ofprofitability, liquidity, and leverage of non-financial companies listed inIndonesian Stock Exchange and located in DKI Jakarta. A stastistical methodused in this study is multiple regression analysis to examine the effect ofenvironmental performance on the disclosure of sustainability report. Dataanalysis and hypothesis testing in this study using SPSS version 20. Resultsshowed: (1) environmental performance the company has a significant positiveeffect on the disclosure of sustainability report, (2) financial performance has asignificant negative effect on the disclosure of sustainability report.

The purpose of this study was to investigate the relationship between the power distance beliefs of university Taekwondo players, the ability to perform games, and the willingness to participate. To this end, the researchers randomly selected 15 teams from Taekwondo majors in universities located in Seoul, Incheon, Gyeonggi, and Jeonbuk, and extracted samples from a total of 384 people. Of these, a total of 368 data were used for analysis, except for 16 copies, which were judged to lack consistency in response. The survey tool was used by revising and supplementing the structured questionnaire used in the previous research, and the researcher and research assistant were placed in each university campus or conducted through the Google questionnaire. To verify the hypothesis of this study, frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis, multiple regression analysis, and median multiple regression analysis were performed used the Window SPSS 22.0 program. The results of the analysis were as follows. First, the power distance belief had a partial negative effect on the performance ability (performance success, psychological maturity). Second, the power street belief had a negative effect on the intention to continue participation. Third, the performance performance (performance success, psychological maturity, performance maturity) had a positive (+) effect on the participation intention. Fourth, the mediating effect of performance success and psychological maturity was verified in the relationship between power distance belief and participation intention. It is expected that this study will contribute to the basic data for understanding and rethinking the power distance beliefs of Taekwondo players in the future.

2020 ◽  
Vol 59 (5) ◽  
pp. 31-44
Author(s):  
Seong Jin Shin
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Power Distance ◽  
Mediating Effect ◽  
Negative Effect ◽  
Psychological Maturity ◽  
The Relationship ◽  
Power Distance Belief ◽  
Performance Success

scholarly journals Harapan, Tawakal, dan Stres Akademik

2017 ◽  
Vol 2 (1) ◽  
pp. 94
Author(s):  
Anni Zulfiani Husnar ◽  
Siti Saniah ◽  
Fuad Nashori
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Undergraduate Students ◽  
Quantitative Method ◽  
Academic Stress ◽  
Research Data ◽  
Stress Scale ◽  
Negative Effect

<p class="IABSTRAK"><strong>Abstract</strong>: This study aimed to find out the effect of hope and tawakal toward academic stress among undergraduate students. This study used quantitative method with 102 under­graduate students from Islamic college as subjects of this research. Data were collected through three reliable and valid scales; Hope Scale, Tawakal Scale, and Academic Stress Scale. The result of data using multiple regression analysis showed a negative effect of hope and tawakal together toward academic stress among undergraduate students.</p><p><strong>Abstrak:</strong> Penelitian ini bertujuan untuk melihat pengaruh harapan dan tawakal terhadap stres akademik pada mahasiswa. Penelitian ini menggunakan metode kuantitatif dengan subjek sebanyak 102 mahasiswa S1 di salah satu perguruan tinggi Islam di D.I. Yogyakarta yang ditentukan dengan teknik <em>accicedental sampling.</em> Data dikumpulkan melalui pemberian tiga skala kepada masing-masing subjek, yaitu Skala Harapan, Skala Tawakal, dan Skala Stres Akademik yang reliabel dan valid. Hasil analisis data menggunakan regresi berganda menunjukkan adanya pengaruh negatif dari harapan dan tawakal secara bersama-sama terhadap stres akademik pada mahasiswa. </p><p align="center"><strong><em> </em></strong></p>

scholarly journals Pengaruh Profitabilitas, Solvabilitas, dan Opini Audit terhadap Audit Delay Dimoderasi oleh Ukuran Perusahaan

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Rinny Meidiyustiani ◽  
Putri Febisianigrum
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Stock Exchange ◽  
Sampling Technique ◽  
Purposive Sampling ◽  
Mining Companies ◽  
Negative Effect

This study aimed to analyze the influence of profitability, solvency, and auditor’s opinion set on audit delay, and to analyze the size of company in moderating the effect of profitability, solvency, and auditor’s opinion set to audit delay. The population in this study is mining companies listed on Indonesia Stock Exchange period 2012-2017 with using purposive sampling technique and obtained a sample of study as many as 32 companies. The analysis has been carried out by using multiple regression analysis and moderated regression analysis. The result of this study show that the partial profitability has negative effect to audit delay, solvency and auditor’s opinion has not effect to audit delay, the size of company cannot moderate the effect of profitability set to the audit delay, solvency can moderate the effect of profitability set to the audit delay and auditor’s opinion cannot moderate the effect of profitability set to the audit delay. 

scholarly journals Upaya Mengurangi Skeptisisme Iklan Hijau dalam Meningkatkan Perilaku Pembelian Produk Hijau

2016 ◽  
Vol 1 (2) ◽  
pp. 107
Author(s):  
Jati Waskito ◽  
Wahyono Wahyono
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Environmental Sustainability ◽  
Consumer Involvement ◽  
Green Advertising ◽  
Negative Effect ◽  
The City ◽  
Positive Effect

The purpose of this study was to analyze the effect of consumer involvement in environmental sustainability, relevance, confusion, and entertainment from an ad impression of green against the skepticism of consumers through an approach of how far the company can deliver their messages more effectively. Survey by the instrument list of questions to get 299 residents of the city of Solo who participated in the study. The results of multiple regression analysis found that consumer involvement and relevance negative effect on consumer apathy towards green advertising. Variable confusion positive effect on consumer apathy towards green advertising. While variable entertain no significant effect on their skepticism

Sign in / Sign up

Export Citation Format

Share Document