Measurements and Potential Applications of Force-Control Method for Stick-Slip-Driven Nanohandling Robots

2011 ◽  
Vol 467-469 ◽  
pp. 1556-1561 ◽  
Author(s):  
Christoph Edeler
Keyword(s):  
Mobile Robots ◽  
Force Control ◽  
Control Method ◽  
The Other ◽  
Force Generation ◽  
Stick Slip ◽  
The Real ◽  
Other Hand ◽  
Potential Applications ◽  
Application Potential

This paper describes the transition of a recently invented force-generation method to mobile nanohandling robots and outlines future applications. The presented mobile nanohandling robot makes use of miniaturized, piezo-driven Stick-Slip actuators. This allows for very accurate and fast positioning. The drives are fully developed and have proven their performance in fast pickand- place applications. On the other hand, the mentioned force-generation method allows a Stick- Slip axis to exert a dedicated force to any object, which could be useful in many micro- and nanohandling scenarios. However, the method was tested yet only in a testbed similar to the conditions in the robot. Therefore this paper deals with the extrapolation of the results to the real conditions in the robots and discusses benefits and drawbacks. After an introduction of the robot and the force-generation method, measurements are presented and discussed. The paper ends with a sketch of a possible application, which could boost the application potential not only of such mobile robots, but of Stick-Slip-based setups in general.

New uses for brick-making clay materials from the Bailén area (southern Spain)

Clay Minerals ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 453-465 ◽  
Author(s):  
I. Gonzalez ◽  
E. Galan ◽  
A. Miras ◽  
P. Aparicio
Keyword(s):  
Particle Size ◽  
Iron Oxides ◽  
Raw Materials ◽  
The Other ◽  
Southern Spain ◽  
Other Hand ◽  
Floor Tiles ◽  
Potential Applications ◽  
Clay Materials

AbstractAn attempt has been made to assess new potential applications for the Bailén clays, traditionally used for manufacturing bricks, based on mineralogical, chemical, particle size, plasticity and firing results. Raw materials and mixtures used by the local factory were selected and tested with the addition of some diatomite, feldspar or kaolin. Based on their properties, clay materials from Bailén might be suitable for making porous red wall tiles, clinker, vitrified red floor tiles and porous light-coloured wall tiles by pressing; the first could be manufactured from the raw materials and mixtures currently used by the local manufactures. On the other hand, stoneware shaped by extrusion, such as perforated bricks, facing bricks and roofing tiles, can be also manufactured from the mixtures used at the factory if they contain 20-25% carbonate and small amounts of iron oxides; lightweight bricks require black and yellow clays with diatomite.

scholarly journals Distribution of rational points on the real line

1973 ◽  
Vol 15 (2) ◽  
pp. 243-256 ◽  
Author(s):  
T. K. Sheng
Keyword(s):  
Algebraic Number ◽  
Rational Number ◽  
Real Line ◽  
Rational Points ◽  
The Other ◽  
Liouville Numbers ◽  
The Real ◽  
Other Hand ◽  
Image Position

It is well known that no rational number is approximable to order higher than 1. Roth [3] showed that an algebraic number is not approximable to order greater than 2. On the other hand it is easy to construct numbers, the Liouville numbers, which are approximable to any order (see [2], p. 162). We are led to the question, “Let Nn(α, β) denote the number of distinct rational points with denominators ≦ n contained in an interval (α, β). What is the behaviour of Nn(α, + 1/n) as α varies on the real line?” We shall prove that and that there are “compressions” and “rarefactions” of rational points on the real line.

scholarly journals Amos: ’n teologie van bedreiging?

1998 ◽  
Vol 32 (3) ◽  
Author(s):  
J. L. Helberg
Keyword(s):  
Space Time ◽  
The Other ◽  
Moral Justification ◽  
The Real ◽  
Other Hand ◽  
Personal Approach ◽  
History Of

The book of Amos contains many undertones of threat, except in the epilogue which, according to many scholars, is redactional The question thus comes to the fore whether this characteristic implies that God is seen by Amos as a God of threat for whom one can only have fear. This article, however, points out Amos’ moral justification of God's deeds. Israel's actions, on the other hand, display a self-centredness and a lack of theocentric and personal approach. Within this framework the history of salvation, especially the exodus and the conquest of the land, as well as the election, covenant and the idea of the remnant, is fossilised and God is made a captive of space, time and relations. However, Amos' proclamation implies that in reality God cannot be made captive - neither of such a religion nor of a theology of threat. Amos envisions a situation in which everything will comply with the real aim set for it/him.

scholarly journals Transformation of the Banking Sector of Ukraine: Reasons and Consequences

2017 ◽  
Vol 1 (13) ◽  
pp. 33-48
Author(s):  
Myroslava Khutorna
Keyword(s):  
Economic Development ◽  
Banking Sector ◽  
Financial System ◽  
Market Concentration ◽  
The Other ◽  
Real Economy ◽  
The Real ◽  
Other Hand ◽  
The One

This paper is devoted to the consideration of the preconditions and results of the banking sector of Ukraine transforming, its influence on the sector’s productivity, stability and significance for the real economy. It’s grounded that banking sector of Ukraine has seriously weakened its potential for the economic development stimulation. On the one hand, due to the banking sector clearance from the bad and unscrupulous banks the system has become much more sensitive to the monetary instruments and its state is going to be more predictable and better controlled. But on the other hand, massive banks’ liquidations have caused the worsening of the confidence in financial system and radical increasing of the market concentration the highest degree of which is observed in the householders’ deposit market.

The Philosophical Analysis of the Concepts of Postmodern Reality

2021 ◽  
Vol 39 (9) ◽  
Author(s):  
Maryna O. Dei ◽  
Iryna S. Skliar ◽  
Armen O. Atynian
Keyword(s):  
The Other ◽  
Philosophical Analysis ◽  
The Real ◽  
Rational Discourse ◽  
Other Hand ◽  
Creative Self ◽  
Real Essence

The purpose of the article is to conceptualize the philosophy of postmodernism that evolves, on one hand, as a search for new forms of creative self-expression, and, on the other hand, is presented as a crisis of philosophical cognition. The leading method for the study of postmodernism concepts is the systemic method allowing to determine their integrity and to explicate associative connections between them as interactions and interconnections brought into the system of the concept. Summarizing the discourse, we note that the main goal of postmodernism is to eliminate rational discourse and proclaim the end of the general metadiscourse of rationalism. Postmodernity should be seen as the transplantation of aesthetic matrices into surrogate, illusory, eclectic ones, which veiled the real essence of phenomena and processes.

The Understanding of Hadith “Ballighû ‘annî walau Âyah" in Twitter

2020 ◽  
Vol 28 (2) ◽  
pp. 192
Author(s):  
Qurrata A'yun ◽  
Yor Hananta
Keyword(s):  
Social Media ◽  
Qualitative Study ◽  
Descriptive Analysis ◽  
The Other ◽  
The Real ◽  
Other Hand ◽  
Comprehensive Discussion ◽  
Analyze Data

So far, in social media, the hadith "ballighū 'annī walau āyah" has been widely misunderstood as a proposition for preaching even if it is only one verse. On the other hand, this hadith is also used as a suggestion for preaching without understanding the full meaning of a verse. This understanding is different from the real understanding, so a comprehensive discussion is needed to describe it. This article aims to identify misconceptions in understanding the hadith "ballighū 'annī walau āyah" on social media twitter and meet them with the correct meanings of the hadith. This study is a qualitative study which classify and analyze data by descriptive analysis. The discussion of this article explains how the hadith ballighū 'annī walau āyah is understood by Twitter netizens. The understanding of netizens is grouped into two categories, namely those that are appropriate and not in accordance with their real understanding. The factors that lead to misunderstanding of the hadith ballighū 'annī walau āyah are the insights of the hadith that are conveyed only a piece (not intact) and the dissemination of understanding through social media twitter with a short number of characters. This phenomenon causes a transformation of the hadith understanding in the form of degradation and distortion

Computerized Fieldwork Data Base: Applications and Implications

1987 ◽  
Vol 54 (5) ◽  
pp. 263-267 ◽  
Author(s):  
Helen Polatajko ◽  
Marilyn Ernest ◽  
Joyce MacKinnon
Keyword(s):  
Data Base ◽  
Educational Programs ◽  
The Other ◽  
Other Hand ◽  
Resultant Data ◽  
Potential Applications ◽  
The One ◽  
The University ◽  
Professional Judgement

Fieldwork placement is a complicated and involved task. On the one hand, it requires insightful, professional judgement, but on the other hand, it includes numerous routine administrative and clerical tasks. To deal with fieldwork placement more efficiently and effectively it was decided to computerize the fieldwork placement system at the University of Western Ontario, London, Ontario. This paper describes the system developed and the resultant data base. The potential applications of the data base and the implications for students, facilities, educational programs, professional governing bodies and research are discussed.

scholarly journals Upper Pleistocene deposits of the Comprida Island (São Paulo State) dated by thermoluminescence method

2003 ◽  
Vol 75 (1) ◽  
pp. 91-96 ◽  
Author(s):  
KENITIRO SUGUIO ◽  
SONIA H. TATUMI ◽  
EMÍLIA A. KOWATA ◽  
CASIMIRO S. MUNITA ◽  
ROSEMEIRE P. PAIVA
Keyword(s):  
Northern Hemisphere ◽  
Depositional Environments ◽  
The Other ◽  
Upper Pleistocene ◽  
The Real ◽  
Paulo State ◽  
Other Hand ◽  
Geological Map ◽  
Southern Extremity ◽  
Quaternary Glaciations

The Cananéia (Upper Pleistocene) and the Comprida Island (Holocene) formations, outcropping in the Comprida island (SP) have been mapped using geomorphological and lithological criteria. Only one sample of the Cananéia Formation, collected in the homonymous island in front of the Comprida Island, was beyond the limit of the standard radiocarbon method. But since the publication of the geological map of the area in 1978, there has been some doubt on the real occurrence of Pleistocene deposits in southern extremity of Comprida Island. This paper deals with the results of thermoluminescence (TL) ages of eight samples from Comprida Island, which corroborate the Pleistocene age assumed during mapping surveys of these deposits. On the other hand, possible interpretations of the obtained ages, in relation to their depositional environments and related northern hemisphere Quaternary glaciations, are presented.

Open Loop Force Control of Piezo-Actuated Stick-Slip Drives

2011 ◽  
Vol 1 (1) ◽  
pp. 1-19 ◽  
Author(s):  
Christoph Edeler ◽  
Sergej Fatikow
Keyword(s):  
Force Control ◽  
State Of The Art ◽  
Open Loop ◽  
Force Generation ◽  
New Method ◽  
Stick Slip ◽  
Micro Actuator ◽  
Friction Models ◽  
Application Fields

In this paper a new method to generate forces with stick-slip micro drives is described. The forces are generated if the runner of the stick-slip drive operates against an obstacle. It is shown that the generated force can be varied selectively without additional sensors and that virtually any force between zero and a limiting force given by certain parameters can be generated. For the investigated micro actuator this force is typically in the range up to hundreds of mN. For this reason, the method has the potential to expand the application fields of stick-slip positioners. After the presentation of the testbed containing the measured linear axis, measurements showing the principle and important parameters are discussed. Furthermore, it is shown that the force generation can be qualitatively simulated using state-of-the-art friction models. Finally, the results are discussed and an outlook is given.

On the Legal and Illegal Behavior of the Regulated Firm

1986 ◽  
Vol 14 (4) ◽  
pp. 431-447
Author(s):  
Lawrence Martin
Keyword(s):  
Simple Model ◽  
Optimal Choice ◽  
Price Regulation ◽  
The Other ◽  
Production Plan ◽  
Illegal Activity ◽  
The Real ◽  
Illegal Behavior ◽  
Other Hand ◽  
Regulated Firm

This article develops a simple model of a firm's privately optimal choice of the degree to which it will abide with regulations. The model allows for the firm to disguise its illegal actions in order to avoid detection and to expend resources to mitigate possible punishment for violations. Both price and quantity type regulatory schemes are considered. Under quantity regulation noncompliance increases the total amount of the regulated activity and distorts efficiency in production. Price regulation, on the other hand, introduces a kind of dichotomy between the real production plan of the firm and its illegal activity. Even though price regulations are substantially evaded, the total amount of the regulated activity remains unchanged, and the firm continues to produce efficiently.

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