scholarly journals Modeling of Tractor Fuel Consumption

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2300
Author(s):  
Bronisław Andrzej Kolator
Keyword(s):  
Fuel Consumption ◽  
Soil Conditions ◽  
Simulation Studies ◽  
Working Capacity ◽  
Operational Parameters ◽  
System A ◽  
The Individual ◽  
Adjustment System ◽  
Unit Performance ◽  
Efficiency Indicators

In this paper, the energy diagnostic of tractor performance consists in evaluating the energy (fuel consumption per hectare—dm3 ha−1) for a given agricultural operation and in combining it with working capacity, also called productivity (area productivity—ha h−1). One of the methods of solving this problem is the identification of the functioning process of the machine unit. A model of the process of the machine unit performance was developed, considering the operation of the rear linkage system of the implement with the force control adjustment system. In order to analyze the system, a mathematical model of the system function was built: tractor-implement-soil, defining the physical connections and interdependencies between the individual subsystems of the system. Based on this model, a simulation model was developed and implemented in the Matlab/Simulink environment. The Simulink package was used to test the performance of the machine set. The efficiency indicators according to the adopted criteria were calculated in the evaluation block. To evaluate the process, the technical and operational parameters of the tractor, the type and parameters of the tool, and soil properties were taken into account. The results of simulation studies obtained on a validated model are consistent with experimental data from appropriate soil conditions.

scholarly journals Conceptualizing Competences in E-Services Adoption and Assimilation in SMEs

2010 ◽  
pp. 225-238
Author(s):  
Ada Scupola
Keyword(s):  
Medium Size ◽  
Web Based ◽  
Management Level ◽  
Individual Level ◽  
System A ◽  
Conceptual Skills ◽  
Reservation System ◽  
The Individual ◽  
And Control ◽  
Business To Business

This article investigates the competences deemed necessary both at top managerial and individual levels for the successful adoption and assimilation of business-to-business e-services in small and medium size enterprises. To this end, an in-depth case study of a business-to-business e-service system, a Web-based travel reservation system, was conducted. The results show that three main competences, namely vision, value and control, are important at top management level for the primary adoption of e-services. For secondary adoption and assimilation, three categories of competences were identified as being important either to have or to develop at the individual level, namely technical, interpersonal and conceptual skills.

Tool Materials for Turning Specialized Stainless Steels

2021 ◽  
pp. 3-8
Author(s):  
B.Y. Mokritskiy ◽  
E.S. Sitamov
Keyword(s):  
Hard Alloy ◽  
Stainless Steels ◽  
Tool Material ◽  
Simulation Studies ◽  
Operational Parameters ◽  
Tool Materials ◽  
Coating Method ◽  
Composition Structure ◽  
Good Agreement ◽  
Tool Durability

The article considers the issues of increasing the tool durability when turning specialized hard-to-work corrosion-resistant stainless steels 09Kh17N7Yu, 12Kh18N10T and 13Kh15N5AM3 with standard replaceable carbide tip. To develop recommendations for reducing tool consumption, a number of experimental and simulation studies was performed. The simulation was performed in the Deform software for three parameters: temperature, stress, and strain. The simulation results are compared with the operational parameters (wear of the tool material). Simulation was performed for ten different coatings on a hard-alloy substrate of the VK8 brand. The tool hard alloy VK8 is used as the base tool material, the other tool materials differ in the architecture (design, composition, structure and coating method) of the coatings applied to the VK8 substrate. The techniques of selecting the most rational tool materials are developed. The results obtained by simulation are verified experimentally. A good agreement between the results of simulation and experimental research has been achieved.

Individual Factors Affecting the Participation of Turkish People in the New Individual Pension System

2021 ◽  
pp. 98-110
Author(s):  
Emine Ebru Aksoy
Keyword(s):  
Pension System ◽  
Survey Study ◽  
Individual Factors ◽  
Limited Participation ◽  
Factors Affecting ◽  
System A ◽  
Opt Out ◽  
Turkish People ◽  
And Gender ◽  
The Individual

In Turkey, the first step of the individual pension system was based on volunteerism, but the voluntary system resulted in limited participation. Thus, the second step of the system has started to be implemented mandatorily since 2017, and participants were allowed to opt-out the system within two months. More than half of participants in the system preferred to leave the system. Therefore, this study aims to examine individual factors affecting their decision of staying in this system. A survey study was conducted with 374 people selected using the random sampling method. As a result of the study, a positive relationship was found only between the dependent variable and gender, but a significant relationship was determined only between the dependent variable and education level. Based on the results of this study, it is suggested that if the system will need to be improved, the low-performing fund management of the new individual pension system should be re-audited, and the confidence in the system should be increased in this way.

Nature, Nurture, and ’Ndividuality

2021 ◽  
pp. 329-350
Author(s):  
Jack Bauer
Keyword(s):  
Free Will ◽  
Personal Growth ◽  
Causal Role ◽  
Individual Person ◽  
System A ◽  
Whole Person ◽  
Nature And Nurture ◽  
The Individual ◽  
Self Organizing

The field of psychology is under a spell of believing that the person is merely a product of nature and nurture. This belief holds that the individual person plays no causal role in their own development. This belief assumes that epiphenomena (like persons, which originate from nature and nurture) lack real agency and cannot be a cause of themselves at a later time, so personal growth and the transformative self are illusions. This chapter explains the faulty logic in such beliefs and presents the nature, nurture, and ‘ndividuality model of personhood, which holds that the individuality of the whole person influences that person’s own development in ways not explained by nature, nurture, or their interaction. This model relies not on notions of free will or even intentionality but rather on another model of the person as a self-organizing system—a dynamic, organismic system within a pluralistic ecology of systems.

scholarly journals Studying and improving intermediate rail fastening of rail transport

2019 ◽  
Vol 109 ◽  
pp. 00028
Author(s):  
Volodymyr Hovorukha
Keyword(s):  
Rail Transport ◽  
Railway Track ◽  
Small Radius ◽  
Working Capacity ◽  
Operational Parameters ◽  
Transverse Loading ◽  
Topical Problem ◽  
Railroad Transport ◽  
Small Curvature ◽  
Horizontal Loading

Topical problem concerning the improvement of intermediate rail fastening of a railway track of railroad transport as well as industrial and underground rail one has been considered taking into account peculiarities of operation in terms of curved sections of a route with small-radius curvature. Objective of the paper is to improve operational parameters of a railway track with extra small curvature radii in terms of railroad gauge adjustment. Operation of the components of intermediate rail fastening, being subject to intense wear and destruction due to the effect of great transverse and horizontal loading within the curved route sections with small-radius curvature, has been and analysed. Innovative engineering solutions to improve intermediate rail fastening have been proposed. Such peculiarity of the device of intermediate rail fastening provides increased durability and working capacity of rail fastening components in terms of considerable transverse loading within the route sections with small-radius curvature. The obtained results may be applied for underground and industrial rail transport as well as for railroad one.

scholarly journals The Role of Adrenoceptors in the Retina

Cells ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2594
Author(s):  
Yue Ruan ◽  
Tobias Böhmer ◽  
Subao Jiang ◽  
Adrian Gericke
Keyword(s):  
Visual Information ◽  
Vision Loss ◽  
Retinal Diseases ◽  
System A ◽  
The Central Nervous System ◽  
The Individual ◽  
And Function ◽  
The Brain

The retina is a part of the central nervous system, a thin multilayer with neuronal lamination, responsible for detecting, preprocessing, and sending visual information to the brain. Many retinal diseases are characterized by hemodynamic perturbations and neurodegeneration leading to vision loss and reduced quality of life. Since catecholamines and respective bindings sites have been characterized in the retina, we systematically reviewed the literature with regard to retinal expression, distribution and function of alpha1 (α1)-, alpha2 (α2)-, and beta (β)-adrenoceptors (ARs). Moreover, we discuss the role of the individual adrenoceptors as targets for the treatment of retinal diseases.

scholarly journals Chromium VI and Fluoride Competitive Adsorption on Different Soils and By-Products

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 748
Author(s):  
Ana Quintáns-Fondo ◽  
Gustavo Ferreira-Coelho ◽  
Manuel Arias-Estévez ◽  
Juan Carlos Nóvoa-Muñoz ◽  
David Fernández-Calviño ◽  
...  
Keyword(s):  
Pine Bark ◽  
Competitive System ◽  
Chromium Vi ◽  
Batch Type ◽  
System A ◽  
The Individual ◽  
Polluted Waters ◽  
By Products ◽  
Different Soils ◽  
Oak Ash

Chromium (as Cr(VI)) and fluoride (F−) are frequently found in effluents from different industrial activities. In cases where these effluents reach soil, it can play an important role in retaining those pollutants. Similarly, different byproducts could act as bio-adsorbents to directly treat polluted waters or to enhance the purging potential of soil. In this work, we used batch-type experiments to study competitive Cr(VI) and F− adsorption in two different soils and several kinds of byproducts. Both soils, as well as mussel shell, oak ash, and hemp waste showed higher adsorption for F−, while pyritic material, pine bark, and sawdust had a higher affinity for Cr(VI). Considering the binary competitive system, a clear competition between both elements in anionic form is shown, with decreases in adsorption of up to 90% for Cr(VI), and of up to 30% for F−. Adsorption results showed better fitting to Freundlich’s than to Langmuir’s model. None of the individual soils or byproducts were able to adsorbing high percentages of both pollutants simultaneously, but it could be highly improved by adding pine bark to increase Cr(VI) adsorption in soils, thus drastically reducing the risks of pollution and deleterious effects on the environment and on public health.

Enhancing Safety in Manufacturing Systems by Integrating Diagnostic Information

2008 ◽  
Author(s):  
Kyle Schroeder ◽  
Aftab A. Khan ◽  
James Moyne ◽  
Dawn Tilbury
Keyword(s):  
Manufacturing Systems ◽  
Diagnostic System ◽  
Process Variable ◽  
Safety System ◽  
Industrial Control ◽  
Industrial Control Systems ◽  
System A ◽  
The Individual ◽  
Diagnostics System

Integrating traditionally separate industrial control systems can derive factory-wide benefits by leveraging more information about the ongoing process. This paper shows that connecting a networked safety system and a process control system leads to an extension of the individual benefits provided by each system. A safety system gains the ability to protect not only the machines and workers but also the product that is being built. A diagnostic system can also raise safety alarms when a process variable is outside the expected range of safe operation. This connection is explored to determine the practical impact of different methods of integration on machining and system processes. Three integration methods are possible depending on which portions of the system can be classified as “safe”. A case study integrating a diagnostics system as a non-safe sensor proves that this connection, when it is implemented on an industrial testbed, provides all of the benefits described and does not require significant changes to control software.

Not-Minster? Australia’s Bespoke System of Government

2020 ◽  
Author(s):  
Dennis C. Grube
Keyword(s):  
Past Century ◽  
Parliamentary Democracy ◽  
The Past ◽  
System A ◽  
American Style ◽  
The Individual ◽  
Federal Structure

Australia’s system of government has inherited traditions from both sides of the Atlantic. The institutions of a representative parliamentary democracy of the British type sit side by side with an American-style senate and a federal structure that shares power between the states and the Commonwealth. How to accurately describe and categorize these arrangements has vexed scholars for much of the past century. Is it a Westminster system, a Washminster system, or something else entirely? This chapter suggests that these arguments over categorization flounder because the Australian model is in fact unique—a bespoke creation that reflects all the individual aspects of Australia’s history and approach to democracy.

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