scholarly journals Development and Assessment of Methods for Predicting Rainfall in Unmeasured Watersheds Using the Relation Between Observed and Sensor-Measured Rainfall

2021 ◽  
Vol 21 (6) ◽  
pp. 293-302
Author(s):  
Chungdae Lee ◽  
Hayong Kim
Keyword(s):  
High Reliability ◽  
Absolute Error ◽  
Coefficient Of Determination ◽  
Efficiency Coefficient ◽  
Artificial Rainfall ◽  
Information And Communication ◽  
The Relationship ◽  
Precipitation Station ◽  
The Internet Of Things

Recently, with the development of information and communication technology and the Internet of Things (IoT), observation technology using sensors is being applied in a variety of ways, such as using a sensor to observe rainfall in an unmeasured area. In this study, the relationship between the rainfall sensor signal (S) and the amount of rainfall (R) was developed through an experiment in an artificial rainfall generator, and the applicability was evaluated through outdoor observation. The coefficient of determination of the relational expression developed through the indoor experiment was 0.95, the mean absolute error was 2.66 mm/hr, the root mean square error was 3.87 mm/hr, the efficiency coefficient was 0.89, and the concordance index was 0.97, showing very high reliability. In the outdoor test results, the error rate was 7.96% when comparing the data from the rainfall sensors in vehicles and the precipitation station, which were not observed at the same location. Despite such errors, it is judged that accurate rainfall observation using a rainfall sensor is possible in an area where a precipitation station is not installed.

scholarly journals Relationship between Apprenticeship Training with Information and Communication Technologies at Vocational High School in West Java Province

2018 ◽  
Vol 14 (2) ◽  
pp. 55
Author(s):  
A. Maulana ◽  
G. J. Jun
Keyword(s):  
Vocational Education ◽  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Coefficient Of Determination ◽  
Vocational High School ◽  
West Java ◽  
Apprenticeship Training ◽  
Information And Communication ◽  
The Relationship

The aim of vocational education is to produce employees who are ready to work, a characteristic of vocational education is through the implementation of apprenticeship. In the period 2010-2015 in Indonesia the labor force declined from vocational schools compared to senior high schools. This indicates the need for 21st century skill is called a tool for work, namely the skill to use Information and Communication Technologies (ICT). This article is intended to find out the relationship between apprenticeship and ICT in vocational students who carry out apprenticeship in the province of West Java. From the instrument distributed in 520 samples, it was found that there is a relationship between apprenticeship training and ICT through the value of Zcount = 7.16 > Ztable = 2.58, with the coefficient of determination of (ry)2 = (0.315)2 = 0.0992. This shows that apprenticeship contributions affect ICT skill by 9.92% for students who carry out apprenticeship in the West Java province of Indonesia, while 90.08% is influenced by other factors.

scholarly journals A Multimethod Analysis for Average Annual Precipitation Mapping in the Khorasan Razavi Province (Northeastern Iran)

Atmosphere ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 592
Author(s):  
Mehdi Aalijahan ◽  
Azra Khosravichenar
Keyword(s):  
Regional Planning ◽  
Interpolation Method ◽  
Absolute Error ◽  
Rain Gauge ◽  
Annual Precipitation ◽  
Coefficient Of Determination ◽  
Distance Weighting ◽  
Average Annual Precipitation ◽  
Inverse Distance

The spatial distribution of precipitation is one of the most important climatic variables used in geographic and environmental studies. However, when there is a lack of full coverage of meteorological stations, precipitation estimations are necessary to interpolate precipitation for larger areas. The purpose of this research was to find the best interpolation method for precipitation mapping in the partly densely populated Khorasan Razavi province of northeastern Iran. To achieve this, we compared five methods by applying average precipitation data from 97 rain gauge stations in that province for a period of 20 years (1994–2014): Inverse Distance Weighting, Radial Basis Functions (Completely Regularized Spline, Spline with Tension, Multiquadric, Inverse Multiquadric, Thin Plate Spline), Kriging (Simple, Ordinary, Universal), Co-Kriging (Simple, Ordinary, Universal) with an auxiliary elevation parameter, and non-linear Regression. Root Mean Square Error (RMSE), Mean Absolute Error (MAE), and the Coefficient of Determination (R2) were used to determine the best-performing method of precipitation interpolation. Our study shows that Ordinary Co-Kriging with an auxiliary elevation parameter was the best method for determining the distribution of annual precipitation for this region, showing the highest coefficient of determination of 0.46% between estimated and observed values. Therefore, the application of this method of precipitation mapping would form a mandatory base for regional planning and policy making in the arid to semi-arid Khorasan Razavi province during the future.

scholarly journals Managing ICT for Sustainable Education: Research Analysis in the Context of Higher Education

2020 ◽  
Vol 12 (19) ◽  
pp. 8254 ◽  
Author(s):  
Mariana-Daniela González-Zamar ◽  
Emilio Abad-Segura ◽  
Eloy López-Meneses ◽  
José Gómez-Galán
Keyword(s):  
Higher Education ◽  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Scientific Productivity ◽  
The Sustainable Development ◽  
Sustainable Education ◽  
Exponential Trend ◽  
Information And Communication ◽  
The Relationship

The use of information and communication technologies (ICTs) for the benefit of the environment favors the development of a sustainable education, which will help to train more responsible and aware students. The management of educational technology in the context of a sustainable higher education must achieve the internalization of ethics and the sustainable development of humanity. The main objective of this study is to, at a global level, examine the research during the period 2000–2019 on the management of ICTs for sustainable education in the context of higher education. Global research trends on this topic during the period 2000–2019 have been analyzed. Consequently, bibliometric techniques have been applied to a sample of 1814 articles selected from the Scopus database. The results provided data on the scientific productivity of the journal, authors, research institutions, and countries that contribute to the development of this topic. The evidence reveals an exponential trend, mainly in the last five years. In addition, current and future lines of research have been identified. Research at an international level presents a growing trend of publication that allows determination of the relevance of research on ICT management to achieve sustainable education in the context of higher education. This study makes it possible to establish the relationship between science, sustainability, and technology in higher education institutions, and to base the decision-making process for the driving agents of this area of knowledge.

scholarly journals Identification of the Relationship between Rainfall and the CN Parameter in Western Carpathian Mountain Catchments in Poland

2020 ◽  
Vol 12 (22) ◽  
pp. 9317
Author(s):  
Dariusz Młyński ◽  
Andrzej Wałęga
Keyword(s):  
Error Function ◽  
Strong Relationship ◽  
Curve Number ◽  
Western Carpathians ◽  
Asymptotic Model ◽  
Efficiency Coefficient ◽  
Direct Runoff ◽  
Slope Correction ◽  
The Relationship

The aim of this study was to identify the form of the dependence describing the relationship between rainfall (P) and the curve number (CN) parameter using the Natural Resources Conservation Service (NRCS-CN) method in the mountain catchments of the Western Carpathians. The study was carried out in 28 catchments areas in the Western Carpathians in the Upper Vistula Basin, Poland. The study was conducted in the following stages: determination of the volume of the direct runoff using the NRCS-CN method, determination of the P–CN relationship using asymptotic functions, kinetic equation and complementary error function; determination of the volume of the direct runoff from the catchment area, accounting for the correction of the decline; determination of the value of the efficiency coefficient of the analysed models. On the basis of the conducted study, a strong relationship was found between the direct runoff and the rainfall that caused it. The study showed that the empirical values of the CN parameter differed from the values determined on the basis of the volume of rainfall and runoff. The vast majority of study catchments were characterised by a standard P–CN relationship. The kinetic model was found to be the best model to describe the P–CN relationship. The asymptotic model showed the greatest stability for high rainfall episodes. It was shown that the application of the catchment slope correction improved the quality of the NRCS-CN model.

Determination of number of check dams by artificial neural networks in arid regions of Iran

2015 ◽  
Vol 72 (6) ◽  
pp. 952-959 ◽  
Author(s):  
Seyed Ali Asghar Hashemi ◽  
Hamed Kashi
Keyword(s):  
Curve Number ◽  
Absolute Error ◽  
Coefficient Of Determination ◽  
Ann Model ◽  
Effective Parameters ◽  
Check Dams ◽  
Artificial Neural ◽  
Artificial Neural Network Ann ◽  
Mlp Model

An artificial neural network (ANN) model with six hydrological factors including time of concentration (TC), curve number, slope, imperviousness, area and input discharge as input parameters and number of check dams (NCD) as output parameters was developed and created using GIS and field surveys. The performance of this model was assessed by the coefficient of determination R2, root mean square error (RMSE), values account and mean absolute error (MAE). The results showed that the computed values of NCD using ANN with a multi-layer perceptron (MLP) model regarding RMSE, MAE, values adjustment factor (VAF), and R2 (1.75, 1.25, 90.74, and 0.97) for training, (1.34, 0.89, 97.52, and 0.99) for validation and (0.53, 0.8, 98.32, and 0.99) for test stage, respectively, were in close agreement with their respective values in the watershed. Finally, the sensitivity analysis showed that the area, TC and curve number were the most effective parameters in estimating the number of check dams.

scholarly journals Hubungan Motivasi Kerja dengan Kinerja Guru Taman Kanak Kanak di Kecamatan Padang Utara Kota Padang

2019 ◽  
Vol 8 (2) ◽  
pp. 37
Author(s):  
Fadhila Rahmi ◽  
Zulminiati Zulminiati
Keyword(s):  
Data Analysis ◽  
Random Sampling ◽  
Positive Relationship ◽  
Work Motivation ◽  
Kindergarten Teachers ◽  
Scale Model ◽  
Coefficient Of Determination ◽  
Meaningful Relationship ◽  
The Relationship

This study aims to determine the relationship between work motivation and the performance of kindergarten teachers in Padang Utara District, Padang City. The hypothesis in this study proposed is that there is a meaningful relationship between work motivation and the performance of kindergarten teachers in Padang Utara District,Padang City. This type of research correlational with a kuantatif approach,which describes the relationshipof work motivation with the performance of kindergarten teachers in Padang Utara District, Padang City. The population in this study, with 82 teacher  who taught in kindergarten in Padang Utara Subdistrict,Padang City,and were sampled in this study,with 43 people taken using the stratified Proposional Random Sampling techninque. The instruments in this study are likert scale model questionnaires that have been tested for validity and reability and the result are valid and reabel. Data were analyzed using Produt Moment correlation formula with SPPS version 17. Based on data analysis,the coefficient of determination of work motivation was obtained at 0,512. The correlation coefficient between work motivation and the performance of kindergarten teachers is 0,715.This means that motivation is 71,5% towards the performance of significant 5% kindergarten teachers. Based of these data it can be concluded work motivation has a positive relationship with the performance of  kindergarten teacher in Padang Utara District,Padang City.

scholarly journals ANALISIS PENGARUH DEBT CAPITAL DAN EQUITY CAPITAL TERHADAP SISA HASIL USAHA (SHU) KOPERASI

EkoPreneur ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 131
Author(s):  
Adih Supriadi
Keyword(s):  
Research Method ◽  
Equity Capital ◽  
Coefficient Of Determination ◽  
Business Unit ◽  
Business Results ◽  
Debt Capital ◽  
The Relationship ◽  
The City ◽  
Research Analysis

This study is entitled Analysis of the Effect of Debt Capital and Equity Capital on the Remaining Operational Results of Cooperatives. The research is descriptive quantitative, the population used as the unit of research analysis is the Cooperative in the City of South Tangerang with the category thirty large cooperatives in the City of South Tangerang, with the criteria of having more than one business unit, and routinely carrying out RATs  the last three years in a row. The number of cooperatives that will be sampled in this study are thirty cooperatives. The research method used is causal analytical associative meaning a causal relationship where the variable x will affect the variable y. This method aims to determine the relationship between two or more variables, by explaining, predicting and controlling a symptom. The purpose of this study was to determine the effect of Debt Capital and Equity Capital on the Remnants of Cooperative Business Results in the City of South Tangerang. From the results of the study note that Debt Capital partially has a significant effect on the Remaining Operating Results, with a coefficient of determination of 72.29%, the remaining 27.71% is influenced by other factors. Equity Capital partially has a significant effect on the Remaining Results of Operations, with a coefficient of determination of 74.67%, the remaining 25.33% is influenced by other factors. Debt Capital and Equity Capital simultaneously have a significant effect on the Remaining Operating Results, with a coefficient of determination of 81.81%, the remaining 18.19% is influenced by other factors.Keywords: Cooperative, Debt Capital, Equity Capital, Remaining Operating Results

Efikasi Diri, Kecemasan Matematis dan Kemampuan Pemecahan Masalah Siswa dalam Pembelajaran Berbasis Saintifik

2020 ◽  
Vol 3 (1) ◽  
pp. 29-38
Author(s):  
Isna Rafianti ◽  
Siti Nurul Afifah ◽  
Abdul Fatah
Keyword(s):  
Problem Solving ◽  
Significant Relationship ◽  
Self Efficacy ◽  
Quantitative Research ◽  
Coefficient Of Determination ◽  
Ability Test ◽  
Mathematical Anxiety ◽  
Class Viii ◽  
The Relationship

This study aims to determine the relationship between self-efficacy and mathematical anxiety with the problem solving ability of students of class VIII SMP in scientific based learning. This research is quantitative research. The instruments of this study were self-efficacy questionnaire, mathematical anxiety questionnaire and problem solving ability test questions. The results of this study are: (1) there is a positive and significant relationship between self-efficacy and problem solving ability with a regression coefficient value of 22.1% (2) there is a negative and significant relationship between mathematical anxiety towards problem solving ability with a coefficient of determination of 13 % (3) there is a significant relationship between self-efficacy and mathematical anxiety with the ability to solve problems with a coefficient of determination of 22.4%.

HUBUNGAN ANTARA BELAJAR BERDASAR REGULASI DIRI DENGAN SIKAP TERHADAP EKSTRAKURIKULER PADA SISWA KELAS XI SMA MARDISISWA SEMARANG

2019 ◽  
Vol 4 (2) ◽  
pp. 30-35
Author(s):  
Randwitya Ayu Ganis Hemasti
Keyword(s):  
Extracurricular Activities ◽  
Self Regulation ◽  
Coefficient Of Determination ◽  
Religious Institutions ◽  
Test Results ◽  
Significance Level ◽  
Emotional Factors ◽  
The Relationship ◽  
Effective Contribution

This study aimed to determine the relationship between learning based on self-regulation with attitudes toward extracurricular activities, and to determine the effective contribution of learning based on self-regulation. The population in accordance with the characteristics in this study amounted to 113 students in Mardisiswa Semarang High School. Data collection uses a scale of learning based on self-regulation consisting of 31 items (α = 0.939), and a scale of attitude towards extracurricular consisting of 30 items (α = 0.970). The results of hypothesis testing show that learning based on self-regulation is positively related to attitudes towards extracurricular activities indicated by rxy = 0.529 with a significance level of correlation of 0,000 (p <0.05). The test results obtained coefficient of determination of 0, 280. It means that learning based on student self-regulation gives an effect of 28% on attitudes toward extracurricular. While 72% of attitudes towards extracurricular are influenced by other factors outside the variables of this study. These factors include personal experience, the influence of others who are considered important, the influence of culture, mass media, religious institutions, and the influence of emotional factors.   Keywords: self-regulation, Extracurricular.   Penelitian ini ditujukan untuk mengetahui hubungan antara belajar berdasar regulasi diri dengan sikap terhadap ekstrakurikuler, dan untuk mengetahui sumbangan efektif belajar berdasar regulasi diri. Populasi yang sesuai dengan karakteristik dalam penelitian ini berjumlah 113 siswa di SMA Mardisiswa Semarang. Pengumpulan data menggunakan skala belajar berdasar regulasi diri yang terdiri dari 31 item (α = 0,939), dan skala sikap terhadap ekstrakurikuler yang terdiri dari 30 item (α = 0,970).Hasil pengujian hipotesis menunjukkan bahwa belajar berdasar regulasi diri berhubungan secara positif dengan sikap terhadap ekstrakurikuler yang ditunjukkan dengan rxy= 0,529 dengan tingkat signifikansi korelasi sebesar 0,000 (p<0,05). Hasil pengujian diperoleh nilai koefisiensi determinasi sebesar 0, 280. Artinya adalah belajar berdasar regulasi diri siswa memberikan pengaruh sebesar 28% terhadap sikap terhadap ekstrakurikuler. Sedangkan 72% sikap terhadap ekstrakurikuler dipengaruhi oleh faktor-faktor lain di luar variabel penelitian ini. Faktor- faktor tersebut antara lain adalah pengalaman pribadi, pengaruh orang lain yang dianggap penting, pengaruh kebudayaan, media massa, lembaga agama, dan pengaruh faktor emosional   Kata kunci: Regulasi Diri, Ekstrakurikuler

scholarly journals Relación de las características antropométricas con la velocidad del balón en el fútbol (Relationship of Anthropometric Variables with speed ball in soccer)

Retos ◽  
2021 ◽  
Vol 43 ◽  
pp. 826-835
Author(s):  
Jesús León Lozada-Medina ◽  
York Fred Santos-Quiroz ◽  
Manuel De Jesús Cortina Nuñez ◽  
Carlos Armando Hoyos-Espitia ◽  
Luis Eduardo Pupo Sfeir
Keyword(s):  
Body Composition ◽  
High Speed ◽  
Research Study ◽  
Coefficient Of Determination ◽  
Maximum Speed ◽  
Ball Speed ◽  
Ball Velocity ◽  
Relationship Of ◽  
The Relationship

  En el fútbol la posibilidad de generar tiros estáticos con alta velocidad, puede determinar el resultado de un juego al disminuir la posibilidad de reacción del guardameta. La investigación se planteó analizar las características antropométricas con la velocidad del balón en el fútbol. Se evaluaron 17 futbolistas masculinos de la selección del estado Barinas categoría sub-20. (173,2 cm ±6,9 y 65 kg ±7,8). Las variables antropométricas se recolectaron según protocolo de ISAK, para la valoración de la proporcionalidad y la composición corporal se utilizó el método escalable, comparándose mediante un prototipo ontogénico deportivo; se aplicó una prueba de la velocidad pico del balón en el tiro estático sin intención de precisión utilizando un radar doopler para el registro de las velocidades. Los resultados muestran que existe una correlación significativa (<,05) directa para el índice Z de la altura ileoespinal, e inversa para el índice Z del panículo del muslo con respecto a la velocidad máxima del balón en el tiro estático, ambas correlaciones presentan un coeficiente de determinación de 24% y 25,8% respectivamente. No se hallaron correlaciones (>,05) para los índices Z de la altura tibial lateral, la longitud trocánter tibial lateral, ni para el área magra del muslo con la velocidad máxima del balón. De esta manera la menor acumulación de tejido adiposo y mayor altura del miembro inferior se consideran variables relacionadas a la generación de mayores velocidades con el balón. Abstract. In Soccer the possibility of generating static shots with high speed can determine the outcome of a game to reduce the chance of reaction of the goal keeper. This research study analyzes the relationship of body proportionality and body composition with maximum ball speed shooting of soccer. 17 male players under the age of 20 (U-20) of Barinas State (173.2 cm ± 6.9 and 65 ± 7.8 kg) were evaluated. The anthropometric variables were collected according to ISAK protocol. For the assessment of proportionality and body composition scalable method was used being compared through an ontogenetic sport prototype. A test of peak ball velocity was applied in the static shot without focusing on precision using a doopler radar to record speeds. The results show that there is a significant direct correlation (<.05) for Z ileoespinal height index, and inverse for Z index panículo thigh with respect to the maximum speed of the ball in the static shot. Both correlations present a coefficient of determination of 24% and 25.8% respectively. No correlations (> -.05) were found for the Z indices of lateral tibial height, lateral tibial length trochanter or for the lean thigh area with the maximum speed of the ball. Therefore, the lower accumulation of adipose tissue and greater height of the lower limb are considered variables related to the generation of higher velocities with the ball.

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