scholarly journals Synthetic Approach to the Design, Manufacturing and Examination of Gerotor and Orbital Hydraulic Machines

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 624
Author(s):  
Jarosław Stryczek ◽  
Piotr Stryczek
Keyword(s):  
Research Area ◽  
Synthetic Approach ◽  
New Approach ◽  
Hydraulic Machines ◽  
Basic Parameters ◽  
Important Research Area ◽  
The Subject ◽  
System Of Parameters ◽  
Geometry And Kinematics

Gerotor technology is an important research area in the field of hydraulics which attracts the attention of both academic scientists and industry. Despite the numerous publications announced by academics, as well as a considerable number of projects made by industry, the subject has not been exhausted. This paper presents a new approach to gerotor technology which has been formed by gathering the authors’ knowledge of gerotors in a synthetic form. The following scientific and technical results have been obtained: (1) A uniform system of parameters and basic concepts regarding toothing and cycloidal gearing (z, m, λ, v, g) which is consistently used to describe the geometry, kinematics, hydraulics and manufacture of those elements; (2) description of the geometry and kinematics of the epicycloidal and hypocycloidal gears with the use of the adopted system of parameters. Additionally, the epicycloidal/hypocycloidal double gearing is presented, which is an original idea of the authors; (3) description of the hydraulics of the gerotor and orbital machines, and in particular: (i) determination of equations for delivery (capacity) q and irregularity of delivery (capacity) δ using the above-mentioned system of basic parameters; (ii) formulation of the principles of designing internal channels and clearances in the gerotor machines and presentation of the original disc distributor in the epicycloidal/hypocycloidal orbital motor; (iii) presentation of the methods of manufacturing the epicycloidal and hypocycloidal gearings with 12 examples of the systems implemented in practice; (4) presentation of the research methods applied for the examination of the gerotor machines, combining computer simulation and experimental research into a coherent and cohesive whole which results in the effect of research synergy. Such a synthesis of knowledge may serve the improvement, creation and investigation of gerotor and orbital machines carried out by academics and industry.

scholarly journals The Market Orientation of Local Governments as a Function of Entrepreneurship: a Theoretical Approach

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Małgorzata Zdon-Korzeniowska
Keyword(s):  
Market Orientation ◽  
Local Governments ◽  
Research Area ◽  
Important Research ◽  
Colloquial Language ◽  
Territorial Unit ◽  
Important Research Area ◽  
The Subject ◽  
The One ◽  
The Relationship

Nowadays, in conditions of globalisation, and simultaneously with tendencies to decentralise management at the level of states and regions, individual territorial units (cities, municipalities, regions) are forced to adopt a more proactive, market-oriented approach to development. This process requires constant analysis of the environment and response to emerging changes; consideration of the offers of the competition and customer’s expectations. The purpose of this article is to show a market approach to managing the development of territorial units as a function of entrepreneurship. In particular, to show the relationship between the market orientation of local governments and entrepreneurship. This is understood, on the one hand, as a process of identifying and using opportunities and on the other, as a process of creating new enterprises, where special attention is paid to the emerging idea of territorial units as entrepreneurs. The latter concept appears increasingly frequently in the literature and colloquial language. Market orientation is an expression of the entrepreneurship of local government. Its impact on entrepreneurship on a given territorial unit is a new and important research area that requires exploration. The paper is based on the theoretical discussion using selected literature on the subject.

On DH in Brazil

2020 ◽  
pp. 236-252
Author(s):  
Héctor Fernández L’Hoeste ◽  
Juan Carlos Rodríguez
Keyword(s):  
Economic Crisis ◽  
Digital Humanities ◽  
Research Area ◽  
Research Centers ◽  
Important Research ◽  
Research Groups ◽  
Current Economic Crisis ◽  
New Knowledge ◽  
Important Research Area ◽  
The Subject

This interview, held in the first half of 2018, focuses on the digital humanities in Brazil. It discusses various aspects of the subject. It signals an increasing interest in the digital humanities in Brazil, visible in several initiatives, and materialized in projects and works both theoretical and applied. The growing creation of laboratories, study centers, or research groups stimulates discussion and the strengthening of the general humanities. Lacking the support of specific public policies, the initiatives listed are the fruit of commitment by researchers, since branches of government have not yet identified an important research area for the development of new knowledge in the humanities. The interview lists names of important Brazilian activists from the area of digital humanities. It also points out the difficulties in the development of the digital humanities, such as the lack of knowledge of the area by researchers and the tendency to reduce the budgets of institutions and universities due to the current economic crisis. Publications, seminars, and other activities that enable the wide exchange of experiences developed at the national and international levels are considered fundamental in the strengthening of the field. Finally, it highlights the relevance of the promotion of events for dissemination in the area, like the 1st International Congress on Digital Humanities, which involved universities, research centers, and cultural institutions in its organization.

ON COMPUTING THE FUZZIFIER IN ↓FLVQ: A DATA DRIVEN APPROACH

2002 ◽  
Vol 12 (02) ◽  
pp. 149-157 ◽  
Author(s):  
L. B. ROMDHANE ◽  
B. AYEB ◽  
S. WANG
Keyword(s):  
Fuzzy Clustering ◽  
Research Area ◽  
Book Design ◽  
Data Set ◽  
Practical Applications ◽  
Probabilistic Clustering ◽  
Data Driven Approach ◽  
Optimal Setting ◽  
Important Research Area

Clustering is an important research area that has practical applications in many fields. Fuzzy clustering has shown advantages over crisp and probabilistic clustering, especially when there are significant overlaps between clusters. Most analytic fuzzy clustering approaches are derived from Bezdek's fuzzy c-means algorithm. One major factor that influences the determination of appropriate clusters in these approaches is an exponent parameter, called the fuzzifier. To our knowledge, no theoretical reason leading to an optimal setting of this parameter is available. This paper presents the development of an heuristic scheme for determining the fuzzifier. This scheme creates close interactions between the fuzzifier and the data set to be clustered. Experimental results in clustering IRIS data and in code book design required for image compression reveal a good performance of our proposal.

RESEARCHES ON TECHNICAL POSSIBILITIES OF FLATNESS EXAMINATION USING KINEMATIC TRIGONOMETRIC METHOD

2017 ◽  
Vol 165 (45) ◽  
pp. 49-65
Author(s):  
IRENEUSZ WYCZAŁEK ◽  
ARTUR PLICHTA ◽  
MICHAŁ WYCZAŁEK
Keyword(s):  
The Other ◽  
Moving Target ◽  
New Approach ◽  
Measurement Capability ◽  
Measurement Models ◽  
The Subject ◽  
Applied Approach ◽  
The One ◽  
And Robotics

The new approach for measuring the flatness of floors or other horizontal surfaces is based on the use of vehicle-mounted sensors that moves through these surfaces in a more or less automated way. It becomes competitive in relation to the classical methods using the straightedge and the wedge or tilts or geodetic methods used interchangeably. The measurement with vehicles requires, on the one hand, the movement of the sensors along the set lines, and on the other - the appropriate frequency and precision of the readings. Research and implementation works on the implementation of kinematic tacheometric measurements to the prism moved on the floor are still underway. These works cover two aspects: the measurement capability of the instruments and the precision of evaluation of flatness as a function of prism movement in certain directions on the tested area. These topics are the subject of scientific research and are periodically published. As the part of this work, kinematic measurements of the Leica TCRP 1201+ motorized tacheometer (RTS) have been performed to the prism mounted on a remote-controlled vehicle used in modeling and robotics. Measurement models (different scan variants) were developed, the reliability of the measurement axes' position by averaging between two wheels of the vehicle was analyzed, and tests that enabled determination of the accuracy of the totalizer-type measurement for the moving target were performed. Both scan variants were tested: (i) along fixed lines and (ii) along individually defined lines, obtaining comparable results (not exceeding 10%). As a result of the research, it was concluded that the adopted theses were confirmed and thus the applied approach could be used for measuring flatness of the floor.

scholarly journals New Improved Algorithm for Mining Privacy - Preserving Frequent Itemsets

2011 ◽  
pp. 1-7
Author(s):  
Rashmi Awasthy ◽  
Rajesh Shrivastava ◽  
Bharat Solanki
Keyword(s):  
Data Mining ◽  
Research Area ◽  
Privacy Preserving ◽  
Frequent Itemsets ◽  
Important Research ◽  
New Approach ◽  
Large Databases ◽  
Very Large Databases ◽  
Important Research Area ◽  
Transaction Database

Due to the increasing use of very large databases and data warehouses, mining useful information and helpful knowledge from transactions is evolving into an important research area. Frequent Itemsets (FI) Mining is one of the most researched areas of data mining. In order to mining privacy preserving frequent itemsets on large transaction database efficiently, a new approach was proposed in this paper.

scholarly journals Target Object Tracking with Portable Sensors in Wireless Sensor Network

2019 ◽  
Vol 9 (2) ◽  
pp. 2505-2510
Keyword(s):  
Research Area ◽  
Target Object ◽  
Wireless Sensor ◽  
Base Number ◽  
Multiple Parameters ◽  
Remote Sensor ◽  
Portable Sensors ◽  
Basic Parameters ◽  
Important Research Area ◽  
Portable Sensor

Detection and tracking of moving target objects is one of the important problems of wireless sensor systems. In recent years, portability has become an important research area for the WSN community. Although it was never thought that the WSN arrangement was completely stable, portability was initially perceived as some of the difficulties that must be overcome, including network, inclusion and use of vitality. Target object dictates the accuracy of target objects with which the position of target objects can be estimated. This problem becomes a test, especially given the portability of the sensor and the target object, in which the directions of the sensor and the target object have to be captured. [1, 17] Through this review, we consider that we consider the question of following signals that release appropriate target object using compact sensors that depend on the social issue of the signal. Since the versatile movement of the lens is unclear, the portable sensor controller uses the approximation accumulated by a remote sensor so that the compact article indicates the time of appearance (TOA). [4] The portable sensor controller confirms the TOA estimation information of both compact target object and portable sensors to evaluate their areas before guiding the development of portable sensors to achieve the target object. We propose the calculation of approximation (min-max) to calculate the monitoring area, which can be effectively understood through quasi-different programming (SDP), and apply a cubic potential to the portable sensor path Can do. We measure the area of portable sensors and focus on each other to improve the following accuracy.[2, 5] We determine the characteristic relationship between several basic parameters of the frame and the trackingtarget object, including the thickness of the sensor, the range of detection, the portability of the sensor, and the target object. We examine the relationships and the ability to influence by multiple parameters of the framework and locate the base number of portable sensors that are required to maintain the tracking of target objects in an MSN. To further improve the execution of the framework, we propose a weighted monitoring calculation, using estimation information more efficiently.[3] Our entertainment results suggest that insufficiently insured calculations provide excellent follow-up that can be improved by requesting greatness with an equal number of sensors when contrasted and with the position of static sensors.

Positive Reintegration as a Way of Small and Medium-Sized Business Development

2012 ◽  
pp. 83-88
Author(s):  
A. Zolotov ◽  
M. Mukhanov
Keyword(s):  
Policy Implementation ◽  
Policy Making ◽  
Economic Reforms ◽  
Alternative Possibility ◽  
New Approach ◽  
Compensation Mechanisms ◽  
Policy Making Process ◽  
Monitoring And Enforcement ◽  
The Subject ◽  
Modernization Process

А new approach to policy-making in the field of economic reforms in modernizing countries (on the sample of SME promotion) is the subject of this article. Based on summarizing the ten-year experience of de-bureaucratization policy implementation to reduce the administrative pressure on SME, the conclusion of its insufficient efficiency and sustainability is made. The alternative possibility is the positive reintegration approach, which provides multiparty policy-making process, special compensation mechanisms for the losing sides, monitoring and enforcement operations. In conclusion matching between positive reintegration principles and socio-cultural factors inherent in modernization process is provided.

Light Side of Design: Professional Vector

2020 ◽  
pp. 23-33
Author(s):  
Elena A. Zaeva-Burdonskaya ◽  
Yuri V. Nazarov
Keyword(s):  
Professional Practice ◽  
Wide Spectrum ◽  
Scientific Basis ◽  
Design Culture ◽  
Interdisciplinary Nature ◽  
Educational Programmes ◽  
Design Activities ◽  
The Subject ◽  
Light Side

This article addresses one of the most actively developing types of design activities – light design. The article comprises quotes of the leading Russian and foreign light design specialists published over the previous five years, as well as the authors’ own conclusions. The thoughts quoted in the article are sometimes opposite to each other and reflect the wide spectrum of professional practice. They reflect the initial opinions of analysts and experts which are often diverging. All of the specialists point at the interdisciplinary nature of the new profession, which imposes additional load on a designer overloaded enough already by the scope and speed of the problems being solved nowadays. The discussion of the new profession of light designer initiated on the pages of professional publications is especially important in view of the development of professional standards and standards of design and architectural education, as well as creation of new educational programmes based on various approaches to the subject in technical and humanitarian institutions. The goal of this article is to introduce light design into the field of fully legitimate sections of design culture, to define the authentic scientific basis of the new creative profession, to initiate a foundation for self-determination of the new synthetic area, which materially affects the state of the profession as a whole and the life standards of a wide variety of consumers. In order to reach the set goal, a comparative and analytical method of study was selected, which allows studying the problem to a large extent and from all angles and finding the ways of overcoming the challenges emerging in the area of the new activity.

Social organization in the Orcadian Neolithic: identification of elite domestic structures and settlements through analysis of excavation data

2018 ◽  
Vol 40 (1) ◽  
pp. 25-53 ◽  
Author(s):  
David MacInnes
Keyword(s):  
Social Organization ◽  
Qualitative Data ◽  
Social Hierarchy ◽  
Published Data ◽  
Early Neolithic ◽  
Late Neolithic ◽  
New Approach ◽  
Qualitative Evidence ◽  
Methods Of Analysis ◽  
The Subject

The nature of social organization during the Orcadian Neolithic has been the subject of discussion for several decades with much of the debate focused on answering an insightful question posed by Colin Renfrew in 1979. He asked, how was society organised to construct the larger, innovative monuments of the Orcadian Late Neolithic that were centralised in the western Mainland? There are many possible answers to the question but little evidence pointing to a probable solution, so the discussion has continued for many years. This paper takes a new approach by asking a different question: what can be learned about Orcadian Neolithic social organization from the quantitative and qualitative evidence accumulating from excavated domestic structures and settlements?In an attempt to answer this question, quantitative and qualitative data about domestic structures and about settlements was collected from published reports on 15 Orcadian Neolithic excavated sites. The published data is less extensive than hoped but is sufficient to support a provisional answer: a social hierarchy probably did not develop in the Early Neolithic but almost certainly did in the Late Neolithic, for which the data is more comprehensive.While this is only one approach of several possible ways to consider the question, it is by exploring different methods of analysis and comparing them that an understanding of the Orcadian Neolithic can move forward.

Solow economy model

2019 ◽  
pp. 150-157
Author(s):  
Oleksandr Synenko ◽  
Kateryna Yarema ◽  
Yuliia Bezsmertna
Keyword(s):  
Economic Growth ◽  
Regression Analysis ◽  
Solow Model ◽  
Economy Model ◽  
Accelerated Depreciation ◽  
Basic Parameters ◽  
The Subject ◽  
Investment Process ◽  
The Impact ◽  
Model Algorithm

The subject of the research is the approach to the possibility of using the Solow model to perform the regression analysis on the example of the Ukrainian economy model. The purpose of writing this article is to investigate the notion of regres- sion analysis, Solow’s economy model, algorithm for performing regression analy- sis on the example of Ukraine’s economy model. This model can be adapted for the economy of enterprises. Methodology. The research methodology is system-struc- tural and comparative analyzes (to study the structure of GDP); monograph (when studying methods of regression analysis on the example of the Ukrainian economy); economic analysis (when assessing the impact of factors on Ukraine’s GDP). The scientific novelty consists the features of the use of the Solow model on the ex- ample of Ukrainian economy are determined. An algorithm for calculating the basic parameters of a model using the Excel application package is disclosed. The main recommendations on the development of the national economy and economic growth through the use of macroeconomic instruments are given. Conclusions. The use of the Solow model enables forecasting and analysis. The results obtained re- vealed the problem of low resource return of capital as a resource, along with the means of macroeconomic regulation of the investment process, using which can improve the situation. A special place in these funds belongs to the accelerated depreciation and interest rate policies.

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