scholarly journals Structural Optimization Method of a FinRay Finger for the Best Wrapping of Object

2021 ◽  
Vol 11 (9) ◽  
pp. 3858
Author(s):  
Jiří Suder ◽  
Zdenko Bobovský ◽  
Jakub Mlotek ◽  
Michal Vocetka ◽  
Petr Oščádal ◽  
...  
Keyword(s):  
Internal Structure ◽  
Evaluation Method ◽  
Optimization Method ◽  
Point Of View ◽  
Research Subjects ◽  
Fused Filament Fabrication ◽  
Simple Method ◽  
Main Research ◽  
Suitable Structure ◽  
Real Test

Soft gripping, in which the gripper adapts to differently shaped objects, is in great demand for use in unknown or dynamically changing environments and is one of the main research subjects in soft robotics. Several systems have already been created, one of which is a passive shape-adaptable finger based on the FinRay effect. The geometric shape of this finger ensures that the finger wraps around the object it grips. FinRay fingers have been studied in several studies, which have changed the internal structure and examined how gripping force’s dependence on finger deformation changes. So far, however, no specific way has been determined to evaluate the proposed finger regarding its ability to wrap around the object. This work comes up with a new and simple method to evaluate the finger’s wrapping around the object mathematically. Based on this evaluation method, several different patterns of the internal structure of FinRay fingers were tested. The fingers were first tested in a simulation program, which simulated a steel roller indentation with a diameter of 20 mm in the middle of the finger’s contact surface. Based on the simulation results, selected types of structure were made by the Fused Filament Fabrication method from a flexible filament and tested on a real test rig to verify the results of the simulation and compare it with the real behaviour. According to the methodology used, the results show that the most suitable structure of the selected tested fingers from the point of view of wrapping the finger around the object is a structure without internal filling. Designers can simply use the new evaluation method to compare their designed finger variants and select the most suitable one according to the ability to wrap around the gripped object. They can also use graphs from this work’s results and determine the finger’s dimensions without internal filling according to the required forces and deflection.

Academy Journal No.3(15), 2019/ Chief Editors Susan Belih & Jaak Järv /OEAPS Inc.(Open European Academy of Public Sciences) & Estonian Academy of Sciences. Tallinn, Estonia. 09.03.2019: OEAPS Inc., 2019. - 88 P. ISBN: 9781797440507 ISSN 1736-7530 (electronic)

2019 ◽  
Author(s):  
Inc. OEAPS
Keyword(s):  
Service Sector ◽  
Point Of View ◽  
Scientific Quality ◽  
Final Decision ◽  
Research Subjects ◽  
Wide Range ◽  
Peer Reviewers ◽  
Verification Process ◽  
Scientific Research Articles ◽  
Monthly Journal

"Academy Journal" is an international, peer-reviewed monthly journal. It is devoted to the publication of original scientific research articles dealing with various academic disciplines.Articles that may be of interest to a wide range of researchers are welcome, and not limited to those who work on specific research subjects."Academy Journal" has an open archive, according to which published articles are available immediately after publication, excluding embargoes.Expert reviewThere is one blind verification process in the journal. All articles will be initially evaluated by the editor for compliance with the journal. Manuscripts that are considered appropriate are then usually sent to at least two independent peer reviewers to assess the scientific quality of the article. The editor is responsible for the final decision on whether to accept or reject the article. The editor's decision is final.The main criterion used in assessing the manuscript submitted to the journal is: uniqueness or innovation in the work from the point of view of the methodology being developed and / or its application to a problem of particular importance in the public sector or service sector and / or the setting in which the efforts, for example, in the developing region of the world. That is, the very model / methodology, application and context of problems, at least one of them must be unique and important.Additional criteria considered in the consideration of the submitted document are its accuracy, organization / presentation (ie logical flow) and recording quality.

THE METADIALOGUE CONCEPT IN ITS LINGUISTIC ASPECT

2019 ◽  
Vol 29 (5) ◽  
pp. 721-726
Author(s):  
Yu.V. Kupriyanova ◽  
I.M. Vasilyanova
Keyword(s):  
Subject Matter ◽  
Dynamic Structure ◽  
Point Of View ◽  
Semantic Relations ◽  
Human Cognition ◽  
Main Research ◽  
Key Points ◽  
Research Findings ◽  
The Subject ◽  
Linguistic Aspect

The article summarizes the key points in the development of the metadialogue phenomenon from a linguistic point of view. Some stages of the development of this concept and the difficulties associated with its structuring are covered. The main research findings of modern foreign and domestic experts on its study are considered. Some characteristics of the subject of the research from the standpoint of various pragmatic installations are given. On the basis of the dynamic structure of the metadialogue development, certain principles of semantic relations connected with the dialectical nature of human cognition are presented. Excursion into the history and evolution of the concept is presented. Several types of formulation of the subject matter are given. In accordance with the goal of speech exposure, internal problems of the development of metadialogue are highlighted and the critical points related to solving these problems are described. The rules of metadialogue flow are explained at the level of steps, the success/failure of which directly affects the final result of communication. The prospects of development of the concept research in accordance with various types of discourse are indicated.

Secure Cloud Quantum Computing with Verification Based on Quantum Interactive Proof

Impact ◽  
2019 ◽  
Vol 2019 (10) ◽  
pp. 30-32
Author(s):  
Tomoyuki Morimae
Keyword(s):  
Quantum Computing ◽  
Quantum Information ◽  
Theoretical Physics ◽  
View Point ◽  
Research Subjects ◽  
Interactive Proof ◽  
Open Problems ◽  
Main Research ◽  
Proof Systems ◽  
Information Group

In cloud quantum computing, a classical client delegate quantum computing to a remote quantum server. An important property of cloud quantum computing is the verifiability: the client can check the integrity of the server. Whether such a classical verification of quantum computing is possible or not is one of the most important open problems in quantum computing. We tackle this problem from the view point of quantum interactive proof systems. Dr Tomoyuki Morimae is part of the Quantum Information Group at the Yukawa Institute for Theoretical Physics at Kyoto University, Japan. He leads a team which is concerned with two main research subjects: quantum supremacy and the verification of quantum computing.

scholarly journals An exceptionally preserved conulariid from Ordovician erratics of Northern European Lowlands

PalZ ◽  
2021 ◽  
Author(s):  
Consuelo Sendino ◽  
Martin M. Bochmann
Keyword(s):  
Internal Structure ◽  
Late Pleistocene ◽  
Point Of View ◽  
Three Dimensions ◽  
Northern European ◽  
Current Location ◽  
Transport Direction ◽  
First Time ◽  
Erratic Boulder

AbstractA conulariid preserved in three dimensions from Ordovician fluvioglacial erratics of the Northern European Lowlands (North German Plain) is described under open nomenclature. It is assigned to the genus Conularia with similarities to Baltoscandian conulariids. The lithology of the erratic boulder and fauna contained in it provide important information on the origin and transport direction of the sediment preserved in a kame from the Saalian glaciation. This paper deals with the site of origin of the boulder in Baltoscandia analysing the comprised palaeofauna, from a palaeostratigraphic and palaeogeographic point of view, from its deposition in Ordovician times until its arrival at its current location in the Late Pleistocene. It also reveals for the first time the internal structure of the conulariid aperture.

scholarly journals How ethical challenges of covert observations can be met in practice

2021 ◽  
pp. 174701612110082
Author(s):  
Nicole Podschuweit
Keyword(s):  
Social Research ◽  
Role Playing ◽  
Great Distance ◽  
Point Of View ◽  
Ethical Challenges ◽  
Research Subjects ◽  
Written Information ◽  
Ethical Debate ◽  
The People ◽  
Almost All

This paper aims to bring into the ethical debate on covert research two aspects that are neglected to date: the perspective of the research subjects and the special responsibility of investigators towards their observers. Both aspects are falling behind, especially in quantitative social research. From a methodological point of view, quantitative forms of covert observation involve a great distance between the researcher and the research subjects. When human observers are involved, the focus is usually on the reliable application of the measuring instrument. Therefore, herein, a quantitative study is used as an example to show how the protection needs of both the observed persons and the observers can be met in practice. The study involved 40 student observers who covertly captured everyday conversations in real-world settings (e.g. in cafés or trains) by a highly standardised observation scheme. The study suggests that the anonymity of the research subjects and their trust in the observers are crucial for their subsequent consent. However, many participants showed only little or even no interest in the written information they were provided. Further, this study strongly emphasises how mentally stressful covert observations are to the observers. Almost all observers were worried in advance that the people they were observing would prematurely blow their cover and confront them. Role-playing and in-depth discussions in teams are good strategies to alleviate such and other fears and to prepare student assistants well for their demanding work in the field.

The conceptual profile of Equilibrium and its contributions to the teaching of Chemical Equilibrium

2021 ◽  
Author(s):  
Maurício Silva Costa ◽  
Bruno Ferreira Dos Santos
Keyword(s):  
Science Education ◽  
Chemical Equilibrium ◽  
Scientific Concepts ◽  
Research Subjects ◽  
Main Research ◽  
Conceptual Profile

The learning of scientific concepts is one of the main research subjects in science education. Although little used, the theory of conceptual profiles allows to study this knowledge, taking into...

scholarly journals A simple interferometric method to measure the calibration factor and displacement amplification in piezoelectric flextensional actuators

2010 ◽  
Vol 21 (6) ◽  
pp. 577-587 ◽  
Author(s):  
Francisco de Assis Andrade Barbosa ◽  
Gilder Nader ◽  
Ricardo Tokio Higuti ◽  
Cláudio Kitano ◽  
Emílio Carlos Nelli Silva
Keyword(s):  
Modulation Depth ◽  
Low Cost ◽  
Michelson Interferometer ◽  
Laser Interferometry ◽  
Optimization Method ◽  
Calibration Factor ◽  
Simple Method ◽  
Interferometric Method ◽  
Established Technique

Laser interferometry is a well-established technique for the characterization of piezoelectric actuators. In this work, by using a low cost Michelson interferometer, the measurement of the calibration factor and the displacement amplification of a novel piezoelectric flextensional actuator (PFA), designed by using the topology optimization method, is performed. A simple method, based on small phase modulation depth when the PFA is driven by a triangular waveform, allows the absolute interferometer calibration. The free-displacement of the PFA for various drive voltages is measured and the displacement amplification is determined. The linearity and frequencyresponse of the PFA are evaluated up to 20 kHz

Non-Axisymmetric Turbine Endwall Aerodynamic Optimization Design: Part I — Turbine Cascade Design and Experimental Validations

2014 ◽  
Author(s):  
Hao Sun ◽  
Jun Li ◽  
Liming Song ◽  
Zhenping Feng
Keyword(s):  
Secondary Flow ◽  
Evaluation Method ◽  
Pressure Coefficient ◽  
Optimization Method ◽  
Experimental Measurements ◽  
Turbine Cascade ◽  
Aerodynamic Optimization ◽  
Flow Losses ◽  
Flow Intensity ◽  
Performance Evaluation Method

The non-axisymmetric endwall profiling has been proven to be an effective tool to reduce the secondary flow loss in turbomachinery. In this work, the aerodynamic optimization for the non-axisymmetric endwall profile of the turbine cascade and stage was presented and the design results were validated by annular cascade experimental measurements and numerical simulations. The parametric method of the non-axisymmetric endwall profile was proposed based on the relation between the pressure field variation and the secondary flow intensity. The optimization system combines with the non-axisymmetric endwall parameterization method, global optimization method of the adaptive range differential evolution algorithm and the aerodynamic performance evaluation method using three-dimensional Reynolds-Averaged Navier-Stokes (RANS) and k–ω SST turbulent with transition model solutions. In the part I, the optimization method is used to design the optimum non-axisymmetric endwall profile of the typical high loaded turbine stator. The design objective was selected for the maximum total pressure coefficient with constrains on the mass flow rate and outlet flow angle. Only five design variables are needed for one endwall to search the optimum non-axisymmetric endwall profile. The optimized non-axisymmetric endwall profile of turbine cascade demonstrated an improvement of total pressure coefficient of 0.21% absolutely, comparing with the referenced axisymmetric endwall design case. The reliability of the numerical calculation used in the aerodynamic performance evaluation method and the optimization result were validated by the annular vane experimental measurements. The static pressure distribution at midspan was measured while the cascade flow field was measured with the five-hole probe for both the referenced axisymmetric and optimized non-axisymmetric endwall profile cascades. Both the experimental measurements and numerical simulations demonstrated that both the secondary flow losses and the profile loss of the optimized non-axisymmetric endwall profile cascade were significantly reduced by comparison of the referenced axisymmetric case. The weakening of the secondary flow of the optimized non-axisymmetric endwall profile design was also proven by the secondary flow vector results in the experiment. The detailed flow mechanism of the secondary flow losses reduction in the non-axisymmetric endwall profile cascade was analyzed by investigating the relation between the change of the pressure gradient and the variation of the secondary flow intensity.

scholarly journals USE OF ORGANIZATION AND ENGINEERING IN EVENT TOURISM

2020 ◽  
pp. 22-28
Author(s):  
Svitlana Tyshchenko ◽  
Taisiіa Chernyshova ◽  
Snizhana Mutasova
Keyword(s):  
System Analysis ◽  
Technical Support ◽  
Point Of View ◽  
Practical Significance ◽  
Wide Audience ◽  
Main Research ◽  
Goal Development ◽  
Effective System ◽  
Event Tourism ◽  
First Time

The article discusses the main problems of the implementation of event tourism in certain territories, which primarily include: short-term event; the scale of the event; placement in a natural area; lack of sufficient means of accommodation and services for tourists; style of events and the like. Goal. Development of an effective system of organizational and technical support for event tourism events. Methodology. The main research methods, in order to achieve the goal, are the analysis of engineering support, the classification of mobile homes for event tourism and the modeling of requirements for them based on the system analysis of event tourism technologies. Results. The organizational and technical support of event tourism activities proposed in the article will reduce the technogenic load on the local natural landscapes of natural areas in the places where event events are held. This will contribute to the formation of a higher culture, the style of their conduct, which will make it possible to undertake events of event tourism in regions that are even more attractive to a wide audience of tourists not only in our country, but also abroad. This method of organizational and technical support can also be used for holding rallies, forums, conferences and other events. Important for the success of the development of event tourism and the correct organization of organizational and engineering support is the formation of a calendar of events, which makes it possible to approach all future events in a planned manner, from the point of view of engineering and technical support, later will give its positive results. Scientific novelty. The current state of the use of mobile houses in event tourism on the territory of Ukraine is analyzed for the first time. For the first time, the calendar of the territory of the Stanishovskaya OTG of the Zhytomyr region was compiled for 2020-2021. Practical significance of the study lies in the fact that the compiled calendar of event tourism will be used by OTG "Stanishovskaya" in full and taking into account our recommendations regarding the holding of mass events.

scholarly journals The development of Turkic studies at Vilnius University

2009 ◽  
Vol 10 (1-2) ◽  
pp. 209-223
Author(s):  
Galina Miškinienė
Keyword(s):  
Eastern Europe ◽  
Ethnic Groups ◽  
19Th Century ◽  
Research Subjects ◽  
Main Research ◽  
Vilnius University ◽  
Grand Duchy Of Lithuania ◽  
The University ◽  
The 19Th Century ◽  
Grand Duchy

Institute of the Lithuanian Language At the beginning of the 19th century, the financial possibility to establish a department of Eastern languages at one of the oldest universities in Eastern Europe, Vilnius University, appeared. Turkish was among the Eastern languages that were expected to be taught. The intensive preparation of lecturers was started. Unfortunately, the ambitious plans were destined to never become reality; in 1832 the university was closed. Nevertheless, over the following two centuries the Turkic direction did not disappear; in one form or another it surfaced and retained its vitality. There was a sympathetic environment: Tartars and Karaims—both Turkic ethnic groups—began settling in the Grand Duchy of Lithuania in the 14th century. Vilnius University was the cradle of many famous Orientalists who maintained Turkic research by their activities. In such a way, two main research subjects appeared: Kitabistik and the Karaim language. In this article, the origin problems, development and prospects of Turkic research will be examined.

Sign in / Sign up

Export Citation Format

Share Document