scholarly journals Potential of Mehlich 3 method for extracting plant available sulfur in the Czech agricultural soils

2018 ◽  
Vol 64 (No. 9) ◽  
pp. 455-462
Author(s):  
Kulhánek Martin ◽  
Černý Jindřich ◽  
Balík Jiří ◽  
Sedlář Ondřej ◽  
Suran Pavel
Keyword(s):  
Regression Analysis ◽  
Agricultural Soils ◽  
Soil Samples ◽  
The Other ◽  
Organic S ◽  
Correlation And Regression Analysis ◽  
Close Relationship ◽  
Good Potential ◽  
Preliminary Study ◽  
Water Extractable

Mehlich 3 is an extractant used worldwide for extracting bioavailable nutrients in soils; however, its extraction abilities for sulfur (S) are still not well described. The aim of this preliminary study was to compare the results of Mehlich 3 determined soil S fraction (S<sub>M3</sub>) with the results of sulfur fractionation, mainly focusing on bioavailable S (S<sub>av</sub> – sum of water-extractable (S<sub>w</sub>) and adsorbed (S<sub>ads</sub>) sulfur). Air dried soil samples from commonly used agricultural soils were chosen for the analyses. The following S fractions were determined: (i) S<sub>w</sub>; (ii) S<sub>ads</sub>; (iii) S<sub>av</sub>; (iv) 1 mol/L HCl extractable (S<sub>HCl</sub>); (v) estersulfate (S<sub>es</sub>); (vi) organic (S<sub>org</sub>) and (vii) total (S<sub>tot</sub>). The median value of S<sub>M3</sub> (18.3 mg/kg) was similar to S<sub>av</sub> (17.9 mg/kg). From the correlation and regression analysis it is clear that S<sub>M3</sub> results are in close relationship with S<sub>av</sub> form. On the other hand, the relationships between S<sub>M3</sub> and organic S (including S<sub>HCl</sub>) were very weak. Based on the obtained results it can be concluded that Mehlich 3 method has a good potential to determine bioavailable sulfur in commonly used agricultural soils. However, especially the plant response should be further studied to confirm this theory.

scholarly journals Lending as motivation for innovative activity of a modern enterprise

2018 ◽  
Vol 15 (2) ◽  
pp. 213-221 ◽  
Author(s):  
Nataliia Polishchuk ◽  
Olha Hromova ◽  
Ruslana Lopatiuk
Keyword(s):  
Regression Analysis ◽  
Innovative Activity ◽  
Innovation Activity ◽  
Synthesis Methods ◽  
Correlation And Regression Analysis ◽  
Modern Enterprise ◽  
Close Relationship ◽  
Analysis And Synthesis ◽  
Average Annual Cost ◽  
Motivating Factor

The most important motivating factor for enhancing innovation activity is lending as a stimulus for the development of a modern enterprise. The motivation of the Ukrainian enterprise, based on the need for innovative activity lending in ensuring the efficiency of its economic activity, was explored. The authors use different methods of research, for example, analysis and synthesis methods, method of scientific substantiation and comparison of the main indicators of the activity of the investigated enterprise, as well as correlation and regression analysis method. Here is also used the method of correlation and regression analysis to determine the effect of changes in the average annual cost of fixed assets and investments in their modernization on the motivation to increase revenue from the sale of products (goods, products, services), as well as to characterize the functional relationship between income from the sales of products and capital, expenses, investments. The results of the study indicate a close relationship between the indicators, thus there is a high dependence on the increase of the volume of income from the sale of products due to the need to attract financing in the form of lending to innovative products of the investigated enterprise.Lending of innovative activity contributes to the increase of sales volumes and the emergence of its new products, and also serves as a form of strengthening the motivation of enterprise development. As a result of the research, the theoretical principles of using Ukrainian enterprise motivational space with lending involvement for the introduction of innovations have been substantiated.

scholarly journals Corrupt behaviors of agents and users of public service in Cotonou in the face of representation of money and ethno-linguistic affiliations

2016 ◽  
Vol 4 (12) ◽  
pp. 78-85
Author(s):  
Sylvie De CHACUS
Keyword(s):  
Regression Analysis ◽  
Public Service ◽  
Public Services ◽  
The Other ◽  
Public Accounting ◽  
Correlation And Regression Analysis ◽  
Other Hand ◽  
The Face ◽  
The One

The present study aimed to measure the link between representations of money, ethnolinguistics affiliations and the nature of corruption among agents and users of public services. The numerous legal mechanisms put in place have produced limited results without big effects. Thus, this survey raises the problem of the persistence (obstinacy) of corruption in spite of the multiple efforts taken various levels (institutional, national, and international). The sample of the study consists, on the one hand, of 100 users of public services chosen at random at the Directorate of Treasure and Public Accounting (DGTCP) and at the General Directorate of Taxes and Domains (DGID) in Benin. And on the other hand, of 50 agents in public service; identified in the two directorates according to their contact with the users in the exercise of their functions. Two different questionnaires were used to collect data on the two targets (of agents). The results from the correlation and regression analysis confirm the existence of a significant link between the representation of money, ethnolinguistics affiliations of the agents and users of public services and the behavior of corruption. The results of this research will allow authorities at various levels to better understand the behavior of corruption of the agents and users of public service and it will also be of use in the drafting of measures that aim at changing people’s behavior for an effective and productive fight against corruption.

scholarly journals PENGARUH HUMAN CAPITAL TERHADAP KINERJA AUDITOR PADA KAP YANG ADA DI BANDUNG

2014 ◽  
Vol 2 (1) ◽  
pp. 269
Author(s):  
Nono Supriatna
Keyword(s):  
Human Capital ◽  
Regression Analysis ◽  
Organizational Climate ◽  
Rank Correlation ◽  
Positive Influence ◽  
Measurement Scale ◽  
Individual Factor ◽  
Correlation And Regression Analysis ◽  
Close Relationship ◽  
Research Findings

This research starting from the professionalism accountants as human capital at accountant firm as a service company. This research is intended  to study the effect of human capital on auditor performance at KAP in Bandung to propose the hypothesis that human capital has positive influence on auditors performance, either partially or simultaneously. Some dimensions of the sub-variables that make up the human capital that will be studied is represented by the factors individual capability, individual motivation, leadership, the organizational climate, and workgroup effectiveness. The auditor’s performance is measured by three factors that make up the performance:  (1) individual factor, (2) psychology factor, and (3) organization factor.            The research was conducted at the accounting firm located in Bandung. Of the number of samples taken at random population consisting of senior accountants and junior accountants as respondents. Technique of data collecting used  questionnaire. In accordance with the measurement scale, the data has been collected tested the validity of the formula Spearman Rank correlation and reliability with Cronbach alpha. The data has been tested and found valid and reliable then analyzed by correlation and regression analysis.            Based on the results of correlation and regression analysis to test hypotheses derived research findings that human capital simultaneously has a fairly close relationship with performance. While the multiple regression analysis known that each dimension contributes to the performance of the auditor's diverse and significant at p = 0.05, so the significance of test results, either partially or simultaneously can be concluded to accept the research hypothesis, namely human capital has positive influence on the performance of auditors.

Analysis And Modeling Of The Impact Of Factor Determinants On Functioning Of Hotel Economy In Ukraine

2021 ◽  
Vol 38 (4) ◽  
Author(s):  
Nazariy Popadynets ◽  
Tetyana Skrypko ◽  
Mariia Garasymliuk ◽  
Oleksiy Topchiy
Keyword(s):  
Regression Analysis ◽  
System Analysis ◽  
Influence Factors ◽  
Hotel Industry ◽  
Housing Sector ◽  
Competitive Advantages ◽  
Correlation And Regression Analysis ◽  
New Directions ◽  
Close Relationship ◽  
The Impact

The system of indicators that impact the process of forming of competitive advantages in hotel economy as one of the types of housing sector is suggested based on the system analysis. Close relationship between the competitiveness level of hotel economy in Ukraineand influence factors roughly divided into two groups (external and internal) is mathematically proven. The methodics of development of prognosis level of hotel economy competitiveness in Ukraineis formed based on respective values of stimulating and deterrent indicators. The hypothesis that income of population impacts the competitive advantages of hotel economy is suggested. The model of hotel economy competitive advantages for Ukrainewas developed based on correlation and regression analysis. It allows for determining of the level of hotel industry competitiveness and efficiency of development of new directions to improve the country’s touristic attractiveness and for detecting the factors (economic, infrastructural, etc.) that most closely correlate with the real competitiveness level of hotel business in the region.

scholarly journals Heavy Metals Content of Two Red Soils in Samar, Philippines

2011 ◽  
pp. 162-173 ◽  
Author(s):  
Ian Navarrete ◽  
Victor Asio
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Agricultural Soils ◽  
Soil Samples ◽  
Mining Activity ◽  
The Other ◽  
Mining Site ◽  
Aqua Regia ◽  
Red Soils ◽  
Heavy Metal Cd

The study evaluated the total and available heavy metal (Cd, Cu, Cr, Pb, Ni, and Zn) contents of two red soils in Samar, Philippines, one developed from slate near a mining site (Bagacay soil) and the other from serpentinite (Salcedo soil), a well-known source of heavy metals. Soil samples were collected from every horizon in each profile and samples were digested using aqua regia and NH4NO3 to determine total and available heavy metals content, respectively. Results revealed that Salcedo soil had high contents of total Cr (average: 1353 mg kg-1), total Ni (average: 610 mg kg-1), and available Cr (average: 0.19 mg kg-1) that exceeded the maximum allowable contents in agricultural soils but it had low amounts of the available form of the heavy metals. Bagacay soil showed very low contents of both total and available heavy metals due to their low amounts in the parent rock. The red Bagacay soil showed no effect of the nearby mining activity.

scholarly journals Preliminary study of the impact of pig or goat manure fertilization of a meadow on oribatid mites

2016 ◽  
Vol 53 (2) ◽  
pp. 55-66 ◽  
Author(s):  
Anna Seniczak ◽  
Stanisław Seniczak ◽  
Hanna Szczukowska ◽  
Radomir Graczyk ◽  
Grzegorz Bukowski
Keyword(s):  
Low Dose ◽  
Early Spring ◽  
Soil Samples ◽  
Control Plot ◽  
Oribatid Mites ◽  
The Other ◽  
Pig Manure ◽  
Preliminary Study ◽  
Goat Manure ◽  
The Impact

AbstractWe investigated the impact of pig or goat manure fertilization of a meadow with doses of 80 kg N ha−1, 140 kg N ha−1, and 200 kg N ha−1(plots 1-6) on oribatid mites. A control plot (0) was left unfertilized. The manure was applied to the meadow in the early spring of 2012, and soil samples were collected in the spring of 2012 and 2013. In total, 6053 oribatid mites were examined, including 1163 juveniles. The effect of fertilizing on the Oribatida depended on the dose of manure, but not on its type. A low dose of pig or goat manure did not affect the density of Oribatida, whereas the other doses decreased it, but only the highest doses decreased it significantly, compared to the control. Species diversity decreased with the dose of manure. In total, 24 species of Oribatida were found and some species reacted differently to both types of manure. For example, a low dose of pig manure significantly increased the density ofEupelops occultus, whereas the density of other species significantly decreased under the influence of the highest dose of pig manure (Achipteria coleoptrata), highest doses of pig and goat manure (Galumna obvia,Liebstadia similis), and medium and highest doses of goat manure (Scheloribates laevigatus).

PEDOLOGICAL PROCESSES IN TECHNOSOILS

2018 ◽  
Vol 32 (1) ◽  
pp. 73-79
Author(s):  
Arsen Pukish ◽  
◽  
Yaroslav Adamenko ◽  
Mirela Coman ◽  
◽  
...  
Keyword(s):  
Regression Analysis ◽  
Soil Development ◽  
Soil Samples ◽  
Soil Restoration ◽  
Saline Soils ◽  
Empirical Equations ◽  
Correlation And Regression Analysis ◽  
Analytical Studies

The article studies the correlation and regression analysis concentration of main ions in the soil. According to the research the empirical equations was received. The obtained dependencies can be used in the analytical studies of soil samples, modeling of salts dissemination in the soil, development of measures for the soil restoration, calculation of the needed amounts of subsidiary chemicals for saline soils restoration.

scholarly journals Higher Education as a Determinant of the Competitiveness and Sustainable Development of an Economy

2020 ◽  
Vol 12 (16) ◽  
pp. 6607 ◽  
Author(s):  
Miloš Krstić ◽  
José António Filipe ◽  
José Chavaglia
Keyword(s):  
Higher Education ◽  
Public Policy ◽  
Sustainable Development ◽  
Regression Analysis ◽  
Strong Correlation ◽  
The Other ◽  
Eu Member States ◽  
Correlation And Regression Analysis ◽  
Research Findings ◽  
The One

The aim of this paper is to examine the interdependence between higher education on the one hand and the competitiveness of the economy and sustainable development on the other hand. To examine the mentioned interdependence, we used a sample that includes EU member states and candidate countries. The paper applies correlation and regression analysis of comparative data sections. The research findings indicate a strong correlation between higher education on the one hand and the competitiveness of the economy and sustainable development on the other. The results obtained by research can serve as a “global benchmark” of future public policy in the field of higher education.

Plasma Levels of Protein S, Protein C, and Factor X: Effects of Sex, Hormonal State and Age

1995 ◽  
Vol 74 (05) ◽  
pp. 1271-1275 ◽  
Author(s):  
C M A Henkens ◽  
V J J Bom ◽  
W van der Schaaf ◽  
P M Pelsma ◽  
C Th Smit Sibinga ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Postmenopausal Women ◽  
Protein C ◽  
Blood Donors ◽  
Premenopausal Women ◽  
Protein S ◽  
The Other ◽  
Factor X ◽  
Normal Ranges

SummaryWe measured total and free protein S (PS), protein C (PC) and factor X (FX) in 393 healthy blood donors to assess differences in relation to sex, hormonal state and age. All measured proteins were lower in women as compared to men, as were levels in premenopausal women as compared to postmenopausal women. Multiple regression analysis showed that both age and subgroup (men, pre- and postmenopausal women) were of significance for the levels of total and free PS and PC, the subgroup effect being caused by the differences between the premenopausal women and the other groups. This indicates a role of sex-hormones, most likely estrogens, in the regulation of levels of pro- and anticoagulant factors under physiologic conditions. These differences should be taken into account in daily clinical practice and may necessitate different normal ranges for men, pre- and postmenopausal women.

Influence of technology parameters of free-cutting steel continuous casting on the billet internal structure

2020 ◽  
Vol 76 (2) ◽  
pp. 139-142
Author(s):  
A. T. Kunakbaeva ◽  
A. M. Stolyarov ◽  
M. V. Potapova
Keyword(s):  
Regression Analysis ◽  
Continuous Casting ◽  
Internal Structure ◽  
Sulfur Content ◽  
Manganese Content ◽  
High Quality ◽  
Correlation And Regression Analysis ◽  
Cutting Steel ◽  
Continuously Cast

Free-cutting steel gains specific working properties thanks to the high content of sulfur and phosphorus. These elements, especially sulfur, have a rather high tendency to segregation. Therefore, segregation defects in free-cutting steel continuously cast billets can be significantly developed. The aim of the work was to study the influence of the chemical composition of freecutting steel and casting technological parameters on the quality of the macrostructure of continuously cast billets. A metallographic assessment of the internal structure of cast metal made of free-cutting steel and data processing by application of correlation and regression analysis were the research methods. The array of production data of 43 heats of free-cutting steel of grade A12 was studied. Steel casting on a five-strand radial type continuous casting machine was carried out by various methods of metal pouring from tundish into the molds. Metal of 19 heats was poured with an open stream, and 24 heats – by a closed stream through submerged nozzles with a vertical hole. High-quality billets had a cross-sectional size of 150×150 mm. The macrostructure of high-quality square billets made of free-cutting steel of A12 grade is characterized by the presence of central porosity, axial segregation and peripheral point contamination, the degree of development of which was in the range from 1.5 to 2.0 points, segregation cracks and strips – about 1.0 points. In the course of casting with an open stream, almost all of these defects are more developed comparing with the casting by a closed stream. As a result of correlation and regression analysis, linear dependences of the development degree of segregation cracks and strips both axial and angular on the sulfur content in steel and on the ratio of manganese content to sulfur content were established. The degree of these defects development increases with growing of sulfur content in steel of A12 grade. These defects had especially strong development when sulfur content in steel was of more than 0.10%. To improve the quality of cast metal, it is necessary to have the ratio of the manganese content to the sulfur content in the metal more than eight.

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