scholarly journals Artificial-Hand Technology—Current State of Knowledge in Designing and Forecasting Changes

2019 ◽  
Vol 9 (19) ◽  
pp. 4090 ◽  
Author(s):  
Jacek Szkopek ◽  
Grzegorz Redlarski
Keyword(s):  
Humanoid Robots ◽  
Human Hand ◽  
Artificial Muscles ◽  
Dc Motors ◽  
Current State ◽  
Pneumatic Muscles ◽  
The Subject ◽  
Artificial Hand ◽  
End Effectors ◽  
Soft Actuators

The subject of human-hand versatility has been intensively investigated for many years. Emerging robotic constructions change continuously in order to mimic natural mechanisms as accurately as possible. Such an attitude is motivated by the demand for humanoid robots with sophisticated end effectors and highly biomimic prostheses. This paper provides wide analysis of more than 80 devices that have been created over the last 40 years. It compares both the mechanical structure and various actuators from conventional DC motors and servomechanisms, through pneumatic muscles, to soft actuators and artificial muscles. Described measured factors include angles, forces, torques, tensions, and tactiles. Furthermore, the appropriate statistics of kinematic configuration, as well as the type or number of drive units and sensory systems, show not only recent problems, but also trends that will be followed in the future.

scholarly journals Implementation of Soft-Lithography Techniques for Fabrication of Bio-Inspired Multi-Layer Dielectric Elastomer Actuators with Interdigitated Mechanically Compliant Electrodes

Actuators ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 73 ◽  
Author(s):  
Mert Corbaci ◽  
Wayne Walter ◽  
Kathleen Lamkin-Kennard
Keyword(s):  
Soft Lithography ◽  
Skeletal Muscles ◽  
Actuation Voltage ◽  
Transition Process ◽  
Humanoid Robots ◽  
Dielectric Elastomer ◽  
Industrial Robots ◽  
Artificial Muscles ◽  
Dielectric Elastomer Actuators ◽  
Soft Actuators

Advancements in software engineering have enabled the robotics industry to transition from the use of giant industrial robots to more friendly humanoid robots. Soft robotics is one of the key elements needed to advance the transition process by providing a safer way for robots to interact with the environment. Electroactive polymers (EAPs) are one of the best candidate materials for the next generation of soft robotic actuators and artificial muscles. Lightweight dielectric elastomer actuators (DEAs) provide optimal properties such as high elasticity, rapid response rates, mechanical robustness and compliance. However, for DEAs to become widely used as artificial muscles or soft actuators, there are current limitations, such as high actuation voltage requirements, control of actuation direction, and scaling, that need to be addressed. The authors’ approach to overcome the drawbacks of conventional DEAs is inspired by the natural skeletal muscles. Instead of fabricating a large DEA device, smaller sub-units can be fabricated and bundled together to form larger actuators, similar to the way myofibrils form myocytes in skeletal muscles. The current study presents a novel fabrication approach, utilizing soft lithography and other microfabrication techniques, to allow fabrication of multilayer stacked DEA structures, composed of hundreds of micro-sized DEA units.

Muhammad Nejatullah Siddiqui. Issues in Islamic Banking: Selected Papers, Leicester: The Islamic Foundation. 1983 , I 52pp.Author and Subject Indexes.

1983 ◽  
Vol 22 (1) ◽  
pp. 57-61
Author(s):  
Shahrukh Rafi Khan
Keyword(s):  
Analytical Model ◽  
Significant Contribution ◽  
Profit Sharing ◽  
Islamic Banking ◽  
Current State ◽  
The Subject ◽  
Made In

The book under review is a compilation of the author's articles and lectures that highlight the prominent developments in the literature on the subject of Islamic banking and inform the reader of the current state of debate on it. One of the earliest and main contributors to this topic is the author himself. The focus of this review will mainly be on "Economics of Profit-Sharing", which is the title of the fourth chapter of the book and is among his latest contributions. This chapter is a significant contribution as it is the first attempt to formalise the concept of profit sharing into an analytical model and, therefore, demands closer scrutiny. However, in the remaining chapters of the book, the author has drawn attention to some of the fine points made in the literature on this topic. Since some of these points appear to be controversial to me, I will briefly discuss them before moving on to the analytical chapter of the book.

BASIC ASPECTS OF THE FISCAL POLICY OF THE STATE IN THE SUBJECT OF THE RUSSIAN FEDERATION

2020 ◽  
Vol 1 (6) ◽  
pp. 4-7
Author(s):  
B. Kh. ALIYEV ◽  
Keyword(s):  
Fiscal Policy ◽  
Russian Federation ◽  
Economic Management ◽  
Financial Flows ◽  
Constituent Entity ◽  
Current State ◽  
Management Measures ◽  
The Subject ◽  
The Russian Federation ◽  
The Republic

The article examines the current state of the fiscal policy of the constituent entity of the Russian Federation, which is a combination of diverse economic management measures based on the distribution and redistribution of financial flows. The analysis of fiscal policy on the example of the subject of the Russian Federation (Republic of Dagestan). The article outlines the problematic issues of the tax policy of the Republic of Dagestan and suggests ways to overcome the identified problems.

Heuristische Textpraktiken in den Wissenschaften

2020 ◽  
Vol 48 (1) ◽  
pp. 1-46
Author(s):  
Michael Bender ◽  
Marcus Müller
Keyword(s):  
Science Research ◽  
Annotation Scheme ◽  
Scientific Debate ◽  
Domain Specific ◽  
Current State ◽  
Scientific Disciplines ◽  
Textual Practices ◽  
Collaborative Annotation ◽  
The Subject ◽  
State Of Research

AbstractThis article contains a comparative study of heuristic textual practices in various scientific disciplines. By this we mean formulation practices with which new knowledge is generated in institutionally influenced routines and connected to existing knowledge, e. g. ‚highlighting the relevance of a research topic‘, ‚defining a concept‘ or ‚supporting a statement argumentatively‘.The aim is to find out to what extent such textual practices occur in different scientific disciplines, how they are distributed and combined. Furthermore, we study the effects domain-specific contexts have on heuristic textual practices. The data basis of our study is a corpus of 65 dissertations from the 13 different faculties of the TU Darmstadt. In the pilot study we report here, we examined the introductory chapters of the dissertations. Methodologically, it is an annotation study: Based on the current state of research on the subject, we have derived a basic annotation scheme, which we have developed and refined in a collaborative process of guideline creation. Our study affiliates on socio-pragmatic research on text production and formulation routines in the sciences. It is theoretically informed by the philosophy of science research on heuristics, methodically we make a contribution to the scientific debate on collaborative annotation procedures.

Parnicki a Rosja. Rekonesans

2021 ◽  
Vol 12 (2) ◽  
pp. 325-338
Author(s):  
Piotr Gorliński-Kucik
Keyword(s):  
Literary Criticism ◽  
Interwar Period ◽  
Cultural Policy ◽  
Historical Novels ◽  
Russian Culture ◽  
Current State ◽  
The Subject ◽  
State Of Research ◽  
Critical Project

The article considers issue of the connections between Teodor Parnicki, the Polish author of historical novels, and Russia. His attitude has its origins in biographical experiences. Knowledge of Russian culture is evident especially in the early work of Parnicki, and above all – in literary criticism of the interwar period. Careful reading shows that the sketches and reviews are a conservative critical project, the subject of which is Soviet social and cultural policy and communism in general. This article also complements the current state of research (who did not address this issue), while being a contribution to further research.

Mainstreaming pre-manufactured offsite processes in construction – are we nearly there?

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Joseph Kwame Ofori-Kuragu ◽  
Robert Osei-Kyei
Keyword(s):  
Construction Industry ◽  
Relevant Literature ◽  
Future Research ◽  
Content Type ◽  
Technical Paper ◽  
Sustainable Systems ◽  
Technology Firms ◽  
Current State ◽  
Academic Publications ◽  
The Subject

Purpose The purpose of this paper is to explore the current state of popular modern methods of construction (MMC) and pre-manufactured construction in the construction industry and propose a framework for future implications for practice and future research. Design/methodology/approach This technical paper is based on a narrative review of the extant literature on the subject. First, the Scopus search engine was used to retrieve relevant papers on MMC, offsite and pre-manufactured construction. Second, institutional literature such as reports by industry professional and trade bodies, literature from leading technology firms and contractors with experience of MMC were extracted. These two strands of literature were synthesised and a comprehensive discussion on the topic was provided. Findings Results show that journal publications on MMC and pre-manufactured construction have increased in the past decade. The paper found significant advances in the development of premanufactured and offsite construction approaches with many benefits. Offsite and pre-manufactured construction are viable and sustainable systems currently suitable for wider adoption as the mainstream construction method. Research limitations/implications This technical paper based on an integrative review of relevant literature could have benefitted from interviews of professionals with experience of offsite and pre-manufacture techniques and from wider availability of current academic publications on the subject. Validation of the framework has not been undertaken. Originality/value Not much-published work has been undertaken on the current state of development globally and the viability of these construction approaches. This paper evaluates evidence from academic and industry sources to address this gap. A framework has been developed which can help the industry’s industrialisation drive.

scholarly journals Progress in Measurements of 0.1–10 GeV Neutrino–Nucleus Scattering and Anticipated Results from Future Experiments

2018 ◽  
Vol 68 (1) ◽  
pp. 105-129 ◽  
Author(s):  
Kendall Mahn ◽  
Chris Marshall ◽  
Callum Wilkinson
Keyword(s):  
Cross Section ◽  
Neutrino Oscillation ◽  
Neutrino Interactions ◽  
Current State ◽  
Nucleus Scattering ◽  
The Subject ◽  
The Cross ◽  
Exotic Physics ◽  
Nuclear Targets

Neutrino interactions with nuclei have been the subject of intense interest during the last 15 years. Current and future measurements of neutrino oscillation and exotic physics use order 0.1–10 GeV neutrinos on a range of nuclear targets (12C,16O,40Ar). As the precision of these experiments has increased, information from their detectors and dedicated experiments has indicated deficiencies in the modeling of neutrino interactions on nuclear targets. Here, we present the current state of knowledge about neutrino–nucleus interactions, the challenge of extracting the cross section of these processes, and current experimental puzzles in the field. We also look forward to new and novel measurements and future efforts that seek to resolve these questions.

Bioinspired Soft Actuators for Eyeball Motions in Humanoid Robots

2019 ◽  
Vol 24 (1) ◽  
pp. 100-108 ◽  
Author(s):  
Lu Li ◽  
Hareesh Godaba ◽  
Hongliang Ren ◽  
Jian Zhu
Keyword(s):  
Humanoid Robots ◽  
Soft Actuators

scholarly journals Powered Upper Limb Orthosis Actuation System Based on Pneumatic Artificial Muscles

2018 ◽  
Vol 48 (1) ◽  
pp. 23-36 ◽  
Author(s):  
Dimitar Chakarov ◽  
Ivanka Veneva ◽  
Mihail Tsveov ◽  
Pavel Venev
Keyword(s):  
Upper Limb ◽  
Joint Stiffness ◽  
Artificial Muscles ◽  
Joint Motion ◽  
Robot Interaction ◽  
Pneumatic Actuators ◽  
Joint Torques ◽  
Actuation System ◽  
Pneumatic Muscles ◽  
Pneumatic Artificial Muscles

AbstractThe actuation system of a powered upper limb orthosis is studied in the work. To create natural safety in the mutual “man-robot” interaction, an actuation system based on pneumatic artificial muscles (PAM) is selected. Experimentally obtained force/contraction diagrams for bundles, consisting of different number of muscles are shown in the paper. The pooling force and the stiffness of the pneumatic actuators is assessed as a function of the number of muscles in the bundle and the supply pressure. Joint motion and torque is achieved by antagonistic actions through pulleys, driven by bundles of pneumatic muscles. Joint stiffness and joint torques are determined on condition of a power balance, as a function of the joint position, pressure, number of muscles and muscles

scholarly journals CONTINUED FRACTIONS, INTERMEDIATE FRACTIONS AND THEIR RELATION TO THE BEST APPROXIMATIONS

2020 ◽  
Vol 20 (3) ◽  
pp. 545-560
Author(s):  
LUKA MILINKOVIC ◽  
BRANKO MALESEVIC ◽  
BOJAN BANJAC
Keyword(s):  
Continued Fractions ◽  
Continued Fraction ◽  
Rational Approximations ◽  
Best Approximations ◽  
Current State ◽  
The Subject ◽  
State Of Art

The subject of this paper is the current state of art in theory of continued fractions, intermediate fractions and their relation to the best rational approximations of the first and second kind. The paper provides an overview of the some well known and even some new properties of continued fractions, and the various terms associated with them. In addition to intermediate fractions, paper considers the fine intermediate fractions and gave some statements to position these fractions in the continued fraction representation of numbers.

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