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Open Access September 02, 2025

Using materials of radar mapping from spacecrafts as a way to increase reliability, as well as to reduce the cost and time of site selection for extended linear construction projects

Abstract The article describes the use of publicly available materials of radar mapping from spacecraft as a way to increase the reliability, as well as to reduce the cost and time of work to select the site of linear construction projects situated in remote underdeveloped areas. Based on the results of theoretical study and practical application of radar mapping of the Earth's surface from spacecrafts the [...] Read more.
The article describes the use of publicly available materials of radar mapping from spacecraft as a way to increase the reliability, as well as to reduce the cost and time of work to select the site of linear construction projects situated in remote underdeveloped areas. Based on the results of theoretical study and practical application of radar mapping of the Earth's surface from spacecrafts the conclusion is made about the availability of these materials, their reliability (relevance) and accuracy in order to select the site of linear construction projects at the concept design stage.
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Open Access May 20, 2021

Bioconcentration Factor of Polychlorinated Biphenyls and Its Correlation with UV- and IR-Spectroscopic data: A DFT based Study

Abstract Polychlorinated biphenyls (PCBs) are important class of persist organic pollutants that were used as a component of paints especially in printings, as plastificator of plastics and insulating materials in transformers and capacitors, heat transfer fluids, additives in hydraulic fluids in vacuum and turbine pumps. There is always a need to establish reliable procedures for predicting the [...] Read more.
Polychlorinated biphenyls (PCBs) are important class of persist organic pollutants that were used as a component of paints especially in printings, as plastificator of plastics and insulating materials in transformers and capacitors, heat transfer fluids, additives in hydraulic fluids in vacuum and turbine pumps. There is always a need to establish reliable procedures for predicting the bioconcentration potential of chemicals from the knowledge of their molecular structure, or from readily measurable properties of the substance. Hence, correlation and prediction of biococentration factors (BCFs) based on λmax and vibration frequencies of various bonds viz υ(C-H) and υ(C=C) of biphenyl and its fifty-seven derivatives have been made. For the study, the molecular modeling and geometry optimization of the PCBs have been performed on workspace program of CAChe Pro 5.04 software of Fujitsu using DFT method. UV-visible spectra for each compound were created by electron transition between molecular orbitals as electromagnetic radiation in the visible and ultraviolet (UV-visible) region is absorbed by the molecule. The energies of excited electronic states were computed quantum mechanically. IR spectra of transitions for each compound were created by coordinated motions of the atoms as electromagnetic radiation in the infrared region is absorbed by the molecule. The force necessary to distort the molecule was computed quantum mechanically from its equilibrium geometry and thus frequency of vibrational transitions was predicted. Project Leader Program associated with CAChe has been used for multiple linear regression (MLR) analysis using above spectroscopic data as independent variables and BCFs of PCBs as dependent variables. The reliability of correlation and predicting ability of the MLR equations (models) are judged by R2, R2adj, se, q2L10O and F values. This study reflected clearly that UV and IR spectroscopic data can be used to predict BCFs of a large number of related compounds within limited time without any difficulty.
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Editorial Article
Open Access June 08, 2021

The Influence of Emotional Intelligence on Leadership Style at Integrated Service Unit (UPT) Regional Revenue Management in Pematangsiantar

Abstract The purpose of this research is: 1. To determine the description of emotional intelligent and leadership style in the Integrated Service Unit (UPT) Regional Revenue Management in Pematangsiantar. 2. To determine the influence of emotional intelligent to leadeship style in the Integrated Service Unit (UPT) Regional Revenue Management in Pematangsiantar. The research uses literature research design [...] Read more.
The purpose of this research is: 1. To determine the description of emotional intelligent and leadership style in the Integrated Service Unit (UPT) Regional Revenue Management in Pematangsiantar. 2. To determine the influence of emotional intelligent to leadeship style in the Integrated Service Unit (UPT) Regional Revenue Management in Pematangsiantar. The research uses literature research design and field research. The population in this study were all administrative employee at in the Integrated Service Unit (UPT) Regional Revenue Management in Pematangsiantar, emounted to 42 employees. The type of data used are qualitative data and quantitative data. Sources of data used are primary and secondary. The data were collected through questionnaries, interviews and documentation. Test of instrument used with validity test and reliability test. The analysis technique used are normality test, qualitative descriptive analysis and quantitative descriptive analysis. The result of this study can be summarized as follows: 1. Emotional intelligent and leadership style are good. 2. Emotional intelligent have positive effect on leadership style. 3. Emotional intelligent heve moderately corelation with leadership style then the level of leadership style can be explained by emotional intelligent. 4. H0 is rejected, meaning that emotional intelligent has positive and significantly to leadership style. The suggestions of this research are: 1. To make leadership style, the leaders should be provided opportunities for employee to be more independently in making decisions both individually or in grups. 2. To enhance emotional intelligent, the leaders should record data of employee to know their skill, knowledge or work experience
Article
Open Access May 31, 2021

Design of a Movement Therapy in the form of Taekwondo and its Effectiveness on Easement of Clinical Symptoms in Boys Suffering from Deficit Attention and Hyper Activity Disorder

Abstract This research deals with Design of a Movement Therapy in the form of Taekwondo and its Effectiveness on Easement of Clinical Symptoms in boys suffering from Deficit Attention and Hyper Activity Disorder [ADHD]. In terms of objective, it is a practical research and in terms of how it gathered data it is a half-pilot research of pre & post-test encompassing test and control groups. Samples were [...] Read more.
This research deals with Design of a Movement Therapy in the form of Taekwondo and its Effectiveness on Easement of Clinical Symptoms in boys suffering from Deficit Attention and Hyper Activity Disorder [ADHD]. In terms of objective, it is a practical research and in terms of how it gathered data it is a half-pilot research of pre & post-test encompassing test and control groups. Samples were 32 children of 6-12 years of age who were ensured to have been suffering from ADHD as diagnosed by psychiatric clinics in Tehran. Sampling was made through easy method and test/control groups were formed randomly from among samples (each group containing16 members). ADHD was evaluated in samples using Conner’s teaching questionnaire pre & post-test questionnaire. To test group a 12-session long practice of movement therapy was prescribed in the form of Taekwondo. Findings were then analyzed using covariance analysis system. Results revealed that there is a meaningful relationship between movement therapy in the form of Taekwondo and easement of ADHD clinical symptoms in reliability of P<0.01). Therefore, difference of averages can persuade us that movement therapy in the form of Taekwondo is effective on easement of clinical symptoms of ADHD.
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