scholarly journals Modeling and Prediction of the Uniformity of Spray Liquid Coverage from Flat Fan Spray Nozzles

2019 ◽  
Vol 11 (23) ◽  
pp. 6716 ◽  
Author(s):  
Paweł A. Kluza ◽  
Izabela Kuna-Broniowska ◽  
Stanisław Parafiniuk
Keyword(s):  
Research Problem ◽  
Environmental Safety ◽  
Probability Density Distribution ◽  
New Model ◽  
Modeling And Prediction ◽  
Water Atomization ◽  
Standard Distribution ◽  
Liquid Quantity ◽  
Spraying Process

The effectiveness and quality of agricultural spraying largely depends on the technical efficiency of the nozzles installed in agricultural sprayers. The uniform spraying of plants results in a decrease in the amount of pesticides used in agricultural production and affects environmental safety. Both newly developed sprayers and those currently in use need quality control as well as an assessment of the performance of the spraying process, especially its uniformity. However, the models applied presently do not ensure accurate estimates or predictions of the spray liquid coverage uniformity of the treated surface. Generally, the distribution of the atomized liquid quantity is symmetrical and leptokurtic, which means that it does not fit well to the commonly used standard distribution. Therefore, there is a need to develop and design new tools for the evaluation, modeling, and prediction of such a process. The research problem studied in the present work was to find a new model for the distribution of atomized liquid quantity that could provide capabilities better than have been available so far to assess and predict the spraying process results. The research problem was solved through the formulation of a new function for the probability density distribution of sprayed liquid accumulation on the surface of the preset dimension size. The development of the new model was based on the results from a series of water atomization tests with an appropriate measurement device design based on the widely applied flat fan nozzles (AZ-MM type).

TECHNOLOGICAL ASPECTS OF HIGH QUALITY RAW MATERIAL OBTAINING FOR PECTIN PRODUCTION

1970 ◽  
pp. 47-50
Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun
Keyword(s):  
Raw Materials ◽  
Thermal Characteristics ◽  
Environmental Safety ◽  
Raw Material ◽  
High Quality ◽  
Temperature Conductivity ◽  
Drying Temperature ◽  
Plant Raw Materials ◽  
Gel Forming Ability

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.

Data analysis of social hygiene monitoring in russian regions determining environmental and hygienic safety for population

2020 ◽  
pp. 60-66
Author(s):  
O. Klepikov ◽  
S. Eprintsev ◽  
S. Shekoyan
Keyword(s):  
Environmental Safety ◽  
Environmental Risks ◽  
Priority Pollutants ◽  
Russian Regions ◽  
Social Hygiene ◽  
Atmospheric Air ◽  
The Social ◽  
The Russian Federation ◽  
Federal Center

Data of the Federal Information Fund for Social Hygiene Monitoring conducted on the basis of the Federal Center for Hygiene and Epidemiology of Rospotrebnadzor have been analyzed to assess environmental risks, as well as to develop environmental safety system as a factor for sustainable development of the territory in the regions of the Russian Federation. Atmospheric air pollution in Russian regions was evaluated by content of priority pollutants. Ranking of Russian regions according to the quality of drinking water supply was carried out. The possibility of using Federal Information Fund for Social Hygiene Monitoring as an integral part of the model for optimizing the social and environmental conditions of populated areas is estimated.

scholarly journals Individual quality of life and the environment – towards a concept of livable areas for persons with disabilities in Poland

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Izabela Grabowska ◽  
Radosław Antczak ◽  
Jan Zwierzchowski ◽  
Tomasz Panek
Keyword(s):  
Quality Of Life ◽  
Environmental Conditions ◽  
Basic Research ◽  
Research Problem ◽  
Individual Characteristics ◽  
Living Conditions ◽  
Special Focus ◽  
Persons With Disabilities ◽  
The Relationship

Abstract Background The United Nations Convention on the Rights of Persons with Disabilities [1] highlights the need to create proper socioeconomic and political conditions for persons with disabilities, with a special focus on their immediate living conditions. According to the Convention, these conditions should be built to ensure that persons with disabilities have the potential to enjoy a high quality of life (QoL), and this principle is reflected in the notion of livable areas. The crucial aspect of this framework is the relationship between the individual QoL and the environment, broadly understood as the socioeconomic as well as the technical conditions in which persons with disabilities function. Methods The basic research problem was to assess the relationship between individual QoL for the population with disabilities as a dependent variable and livability indicators as independent variables, controlling for individual characteristics. The study used a dataset from the EU-SILC (European Union Statistics on Income and Living Conditions) survey carried out in 2015 in Poland. The research concept involved several steps. First, we created a variable measuring the QoL for the entire population with disabilities. To measure the multidimensional QoL, we used Sen’s capability approach as a general concept, which was operationalized by the MIMIC (multiple indicators multiple causes) model. In the second step, we identified the livability indicators available in the official statistics, and merged them with survey data. Finally, in the last step, we ran the regression analysis. We also checked the data for the nested structure. Results We confirmed that the general environmental conditions, focused on creating livable areas, played a significant role in shaping the QoL of persons with disabilities; i.e., we found that the higher the level of the local Human Development Index, the higher the quality of life of the individuals living in this area. This relationship held even after controlling for the demographic characteristics of the respondents. Moreover, we found that in addition to the general environmental conditions, the conditions created especially for persons with disabilities (i.e., services for this group and support for their living conditions) affected the QoL of these individuals. Conclusions The results illustrate the need to strengthen policies aimed at promoting the QoL of persons with disabilities by creating access to community assets and services that can contribute to improving the life chances of this population.

scholarly journals Stakeholder Expectation of Corporate Social Responsibility Practices: A Case Study of PWiK Rybnik, Poland

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3337
Author(s):  
Aleksandra Kuzior ◽  
Józef Ober ◽  
Janusz Karwot
Keyword(s):  
Quality Of Life ◽  
Corporate Social Responsibility ◽  
Social Responsibility ◽  
Water Supply ◽  
Research Problem ◽  
Point Of View ◽  
Educational Activities ◽  
External Stakeholders ◽  
Corporate Social

Practices of corporate social responsibility (CSR), especially in organizations providing key services, related to the supply of fuel, water and energy, are extremely important from the point of view of identifying stakeholders with the functioning of enterprises in line with the principles of a closed loop economy. The article discusses the origins and evolution of the concept of corporate social responsibility, with particular emphasis on the water supply and sewage industry. The research problem was the perception and expectations of stakeholders toward prosocial activities of PWiK Rybnik (Sewage and Water Supply Ltd. Rybnik). The hypothesis assumed in the study was that the external stakeholders of PWIK Rybnik positively assess the company’s involvement in the tasks carried out as part of corporate social responsibility, they notice the involvement in educational activities and additional initiatives of PWIK that improve the quality of life of its inhabitants. For the purpose of this study, a quantitative method was used. For the purpose of the survey, the authors’ questionnaire “Survey of customers’ opinions on the activities undertaken by PWiK Rybnik” was created. The surveys conducted confirmed the hypothesis that the external stakeholders of PWIK Rybnik positively assess the company’s involvement in the tasks performed as part of corporate social responsibility; they notice the involvement in educational activities and additional initiatives of PWIK that improve the quality of life of its inhabitants. The results of the research made it possible to formulate guidelines for the operation of water supply and sewage companies in accordance with corporate social responsibility in the light of the opinions of their stakeholders.

scholarly journals New Model for Measuring Job Quality: Developing an European Intrinsic Job Quality Index (EIJQI)

2021 ◽  
Author(s):  
María Cascales Mira
Keyword(s):  
Quality Index ◽  
Relevant Information ◽  
Job Quality ◽  
Quantitative Methodology ◽  
New Model ◽  
Measurement Models ◽  
European Working ◽  
European Working Conditions Survey ◽  
Indicator Systems

AbstractThis article deals with the development of a new model for measuring job quality based on the intrinsic components of work, an European Intrinsic Job Quality Index. The objective is measure job quality on the basis of the characteristics inherent to the labour activity itself, and not from its financial rewards. First, we review the existing literature on current measurement models and justify the need for an index of this nature. Secondly, we explain the fundamental methodological decisions adopted for the construction of the index, and present the descriptive model, the indicators that make up each dimension, and the empirical model. Finally, we present the index scores by European Union countries within the framework of institutional theories. In this work, we have used a quantitative methodology, based on social indicator systems, and it has been carried out mainly with data from the European Working Conditions Survey (2015). The fundamental contribution of this article is the construction of a new model for measuring the quality of work, robust, valid and reliable, which will allow us to monitor the intrinsic job quality of the member countries, and thus provide relevant information that contributes to the framework of public policies.

DISTRIBUTION INCENTIVE SYSTEM FOR ELECTRICAL COMPANIES

2021 ◽  
Vol 4 (5) ◽  
pp. 43-48
Author(s):  
Yu. V. NIKITOCHKINA ◽  
Keyword(s):  
Optimization Method ◽  
Incentive System ◽  
New Model ◽  
Incentive Model ◽  
Multi Stage ◽  
Commercial Enterprise ◽  
Product Image

This article proposes a new model for stimulating distributors – a multi-stage scale that compares the distributor's rating with the percentage level of discount for regional coverage and specialization. The list of indicators for calculating discounts by specialization and regional coverage includes a group of indicators to increase the motivation of the distributor to improve the quality of their work and a group of indicators to increase the motivation of the distributor to expand the scope of action. Using the method of index grouping of expert estimates, the weight values of each indicator were found. The task of calculating the evaluation of the results of the distribution was set as a multi-criteria task, in which the additive optimization method was used for the procedure of folding private criteria, which was preceded by checking all private criteria for addi-tive independence. The developed incentive model can be adapted for any commercial enterprise interested in promoting its product through regional coverage, as well as in supporting the product image, which, of course, contributes to stimulating demand and increasing sales.

Experience in the development of innovative underground geotechnologies for mining of ore deposits

2020 ◽  
pp. 338-350
Author(s):  
I. V. Sokolov ◽  
Y. G. Antipin ◽  
N. V. Gobov ◽  
I. V. Nikitin
Keyword(s):  
Systematic Approach ◽  
Underground Mining ◽  
Mineral Resources ◽  
Environmental Safety ◽  
Ore Deposits ◽  
Operating Costs ◽  
Processing Waste ◽  
Ore Preparation ◽  
Additional Value

Based on an analysis of the design principles and practice of underground mining of ore deposits, the most significant features, trends to develop and directions to enhance of underground geotechnology in the field of opening and preparation, mining systems, filling works and ore preparation have been established. The main signs of innovation - scientific research and implementation in production in order to obtain additional value, are highlighted. Various approaches to the development of innovative underground geotechnologies are shown and a methodology for their justification is formulated based on a systematic approach implemented in the framework of the concept of integrated development of mineral resources and on the principles of economic efficiency, industrial and environmental safety, completeness of subsoil development. The experience of the IM UB RAS on the development and implementation of innovative underground geotechnologies in the design and industrial operation of a number of ore deposits is given, which significantly increased the completeness and quality of ore extraction from the subsoil, increased labor productivity in sinking and stoping works, reduced capital and operating costs for ore mining and to utilize mining and processing waste in the mined-out space.

IMPROVING THE SERVICE QUALITY OF HEALTHCARE IN GHANA: The Role of Locum Nursing

2013 ◽  
Vol 03 (12) ◽  
pp. 01-14
Author(s):  
Keelson, Solomon A. ◽  
Ann Dodor
Keyword(s):  
Service Quality ◽  
Healthcare Delivery ◽  
Sampling Technique ◽  
Research Problem ◽  
Quality Of Healthcare ◽  
Public Hospitals ◽  
Nurse Shortage ◽  
Quality Healthcare ◽  
Hospital Administrators

The study was purposed to consider how encouraging use of locum nursing could aid in managing nurse shortage in the country and consequently improve the service quality of healthcare in Ghana. To be able to address the research problem and achieve the objectives, thirty public hospitals and thirty private hospitals were selected from the three major cities in Ghana to provide data for the study. Also, 250 locum nurses were sampled for information. Nursing Supervisors or Hospital Administrators from the selected hospitals were use as informant for the study. The paper adopted a survey approach, where incidental sampling technique was used to select the hospitals, and the snowball together with incidental sampling methods were used for selecting locum nurses for the study. Mean and standard deviation were the data analysis method used. The findings confirmed that locum practice in Ghana is relatively low. Similarly, the paper also suggested that locum contribute to addressing the issue of nurse shortage in Ghana. At the same time locum nursing was found to contribute to quality healthcare delivery in the country. Appropriate policy directions were recommended.

Design of the Dry-Mixed Mortar Truck in Avoiding Segregation

2012 ◽  
Vol 542-543 ◽  
pp. 1100-1104
Author(s):  
Lei Zheng ◽  
Li Na Guo ◽  
Hong Chao Ji ◽  
Yao Gang Li
Keyword(s):  
Transport Efficiency ◽  
New Model ◽  
Discharge Opening ◽  
Mixed Mortar ◽  
And Control ◽  
The Way

The way of dry-mixed mortar air-sliding has many advantages，such as improving transport efficiency, ensuring cement quality. But, dry-mixed mortar air-sliding may occur segregate, this phenomenon serious break the original ratio of cement, risking quality of cement[2]. This article suggested a new model of discharge opening with multi-holes, this model can allow dry-mixed mortar flow out at different height, and control the rate of flux in each port to keep mortar equally, this model eliminated the non uniforms caused by different height, eliminated the affection of segregate, ensure the quality of the cement.

scholarly journals Educological Principles of Training Experts for the Education System of Ukraine: Achievements and Prospects

2021 ◽  
Vol 20 (55) ◽  
pp. 109-120
Author(s):  
Olena Protsenko ◽  
Viktor Ogneviuk ◽  
Svitlana Sysoieva ◽  
Olha Melnychenko
Keyword(s):  
Research Problem ◽  
Education Quality ◽  
Venn Diagram ◽  
Quality Of Education ◽  
Ethical Standards ◽  
Student Survey ◽  
Educational Law ◽  
Education Management ◽  
Before And After

RESEARCH OBJECTIVE: The problem of introducing expert examination of education management is relevant and pressing for Ukraine in the context of assessment of education quality at all levels. The purpose of the article is to substantiate the effectiveness of the model of training experts in the field of education on the basis of educology at Borys Grinchenko Kyiv University. THE RESEARCH PROBLEM AND METHODS: When processing the obtained empirical data, statistical methods were used to compare the indicators of the Master’s student survey before and after the course of educology according to Pearson’s criteria, Fisher’s test, and the Mann-Whitney-U test Venn diagram. THE PROCESS OF ARGUMENTATION: Training experts in the field of education is based on the model: 1) mastering the basics of educology and its components; 2) mastering the methodology of the examination and the ethical standards of its implementation; and 3) mastering the specifics of the educational segment which is subject to expert examination. RESEARCH RESULTS: The study confirms the efficiency of the developed model of experts’ training in the field of education. Educology provides the system, purposefulness and effectiveness for such training. CONCLUSIONS, INNOVATIONS, AND RECOMMENDATIONS: The results of the study provide an opportunity to see the feasibility of the first level of the model, which involves mastering the basics of educology; the second level, which is aimed at mastering the components of the educational program, which reveal the methodology and specifics of expert activities; and the third level, which makes it possible to differentiate the suggested directions of such training, namely: measuring and monitoring the quality of education, education management, educational economics, and educational law

Sign in / Sign up

Export Citation Format

Share Document