Recognition of human hand activity to convey series of numerical digits in a natural way using hand shape tree structure

2017 ◽  
Author(s):  
H. Chidananda ◽  
T. Hanumantha Reddy
Keyword(s):  
Tree Structure ◽  
Human Hand ◽  
Hand Shape ◽  
Natural Way

scholarly journals Partitions of an Integer into Powers

2001 ◽  
Vol DMTCS Proceedings vol. AA,... (Proceedings) ◽  
Author(s):  
Matthieu Latapy
Keyword(s):  
Distributive Lattice ◽  
Lattice Structure ◽  
Tree Structure ◽  
Dynamical Model ◽  
International Audience ◽  
Partitions Of Integers ◽  
Natural Way

International audience In this paper, we use a simple discrete dynamical model to study partitions of integers into powers of another integer. We extend and generalize some known results about their enumeration and counting, and we give new structural results. In particular, we show that the set of these partitions can be ordered in a natural way which gives the distributive lattice structure to this set. We also give a tree structure which allow efficient and simple enumeration of the partitions of an integer.

The Inheritance Procedure: Multiple Testing of Tree-structured Hypotheses

2012 ◽  
Vol 11 (1) ◽  
Author(s):  
Jelle J. Goeman ◽  
Livio Finos
Keyword(s):  
Multiple Testing ◽  
Error Control ◽  
Testing Procedure ◽  
Tree Structure ◽  
Graph Structure ◽  
Multiple Testing Procedure ◽  
Natural Way ◽  
Chromosome Level

Hypotheses tests in bioinformatics can often be set in a tree structure in a very natural way, e.g. when tests are performed at probe, gene, and chromosome level. Exploiting this graph structure in a multiple testing procedure may result in a gain in power or increased interpretability of the results.We present the inheritance procedure, a method of familywise error control for hypotheses structured in a tree. The method starts testing at the top of the tree, following up on those branches in which it finds significant results, and following up on leaf nodes in the neighborhood of those leaves. The method is a uniform improvement over a recently proposed method by Meinshausen. The inheritance procedure has been implemented in the globaltest package which is available on www.bioconductor.org.

scholarly journals Design and Development of Zero Turn Material Handling Robot

2021 ◽  
Vol 9 (VI) ◽  
pp. 4815-4827
Author(s):  
Sumit Sanjay Sutar
Keyword(s):  
Material Handling ◽  
Pneumatic Cylinder ◽  
Small Scale ◽  
Human Hand ◽  
Robot Arm ◽  
Pneumatic Actuators ◽  
Hand Shape ◽  
Space Limitation ◽  
End Effectors ◽  
Small Scale Industries

This paper aims to a zero turn material handling robot driven by pneumatic actuator as versatile end effectors for the material handling system. The arm consists of pneumatic hand and pneumatic wrist. The arm can grasp various objects without force sensors or feedback control of any. Therefore, this study aims to control wrist motion space. Hand shape is similar to the human hand with mechanical characteristic. Althe pneumatic actuators used as the drive source. This system develops the robot having rotary motion independent of the base. This model can be used to overcome the problem of space limitation and reduces the labour cost in small scale industries. It includes the robot arm, pneumatic cylinder and motors. Finally a zero turn robot with pneumatic system is fabricated.

scholarly journals Constraint Study for a Hand Exoskeleton: Human Hand Kinematics and Dynamics

2013 ◽  
Vol 2013 ◽  
pp. 1-17 ◽  
Author(s):  
Fai Chen Chen ◽  
Silvia Appendino ◽  
Alessandro Battezzato ◽  
Alain Favetto ◽  
Mehdi Mousavi ◽  
...  
Keyword(s):  
Inverse Kinematics ◽  
Degrees Of Freedom ◽  
Industrial Applications ◽  
Point Of View ◽  
Human Hand ◽  
Anthropometric Data ◽  
Robotic Hands ◽  
Hand Shape ◽  
Hand Exoskeleton ◽  
Reduced Space

In the last few years, the number of projects studying the human hand from the robotic point of view has increased rapidly, due to the growing interest in academic and industrial applications. Nevertheless, the complexity of the human hand given its large number of degrees of freedom (DoF) within a significantly reduced space requires an exhaustive analysis, before proposing any applications. The aim of this paper is to provide a complete summary of the kinematic and dynamic characteristics of the human hand as a preliminary step towards the development of hand devices such as prosthetic/robotic hands and exoskeletons imitating the human hand shape and functionality. A collection of data and constraints relevant to hand movements is presented, and the direct and inverse kinematics are solved for all the fingers as well as the dynamics; anthropometric data and dynamics equations allow performing simulations to understand the behavior of the finger.

Anthropometric Classification of Human Hand Shapes in Korean Population

2016 ◽  
Vol 60 (1) ◽  
pp. 1200-1204
Author(s):  
Soo-Chan Jee ◽  
Yu Shin Lee ◽  
Joong Hee Lee ◽  
Sunghwan Park ◽  
Byungki Jin ◽  
...  
Keyword(s):  
Korean Population ◽  
Human Hand ◽  
Anthropometric Data ◽  
Hand Tools ◽  
Male Population ◽  
Female Population ◽  
Hand Shape ◽  
And Cluster Analysis ◽  
Major Factors

Hand tools designed without the anthropometric perspective lead to lower performance and safety. This study suggests a statistical hand shape classification with Korean anthropometric data. A total of 321 anthropometric data were used for this study. To investigate hand types, 27 anthropometric hand variables normalized by the stature of each participant and factor analysis and cluster analysis were conducted. As a result, three major factors were deduced: factors of hand breadth, palm length, and finger length. Additionally, four hand types were determined: (a) a spacious hand with short fingers, (b) a hand with short palm with above average fingers, (c) a long palm and fingers, and (d) a narrow hand and short fingers. In the male population, the spacious hand with short fingers type was dominant while the narrow hand and short fingers type was dominant in the female population. These results are expected to be preliminarily utilized in design for the Korean population.

Beyond Human Hand: Shape-Adaptive and Reversible Magnetorheological Elastomer-Based Robot Gripper Skin

2020 ◽  
Vol 12 (39) ◽  
pp. 44147-44155
Author(s):  
Dong-Soo Choi ◽  
Tae-Hoon Kim ◽  
Seok-Han Lee ◽  
Changhyun Pang ◽  
Jin Woo Bae ◽  
...  
Keyword(s):  
Human Hand ◽  
Magnetorheological Elastomer ◽  
Robot Gripper ◽  
Hand Shape

scholarly journals Get a Grip: Variation in Human Hand Grip Strength and Implications for Human Evolution

Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1142
Author(s):  
Ameline Bardo ◽  
Tracy L. Kivell ◽  
Katie Town ◽  
Georgina Donati ◽  
Haiko Ballieux ◽  
...  
Keyword(s):  
Grip Strength ◽  
Hand Grip Strength ◽  
Directional Asymmetry ◽  
Human Hand ◽  
Hand Dominance ◽  
Form And Function ◽  
Hand Grip ◽  
Hand Shape ◽  
And Function ◽  
Insight Into

Although hand grip strength is critical to the daily lives of humans and our arboreal great ape relatives, the human hand has changed in form and function throughout our evolution due to terrestrial bipedalism, tool use, and directional asymmetry (DA) such as handedness. Here we investigate how hand form and function interact in modern humans to gain an insight into our evolutionary past. We measured grip strength in a heterogeneous, cross-sectional sample of human participants (n = 662, 17 to 83 years old) to test the potential effects of age, sex, asymmetry (hand dominance and handedness), hand shape, occupation, and practice of sports and musical instruments that involve the hand(s). We found a significant effect of sex and hand dominance on grip strength, but not of handedness, while hand shape and age had a greater influence on female grip strength. Females were significantly weaker with age, but grip strength in females with large hands was less affected than those with long hands. Frequent engagement in hand sports significantly increased grip strength in the non-dominant hand in both sexes, while only males showed a significant effect of occupation, indicating different patterns of hand dominance asymmetries and hand function. These results improve our understanding of the link between form and function in both hands and offer an insight into the evolution of human laterality and dexterity.

Man-Computer Derivations of Tree Structure from Multivariate Data

1968 ◽  
Author(s):  
Gerald H. Shure ◽  
Laurence I. Press ◽  
Miles S. Rogers
Keyword(s):  
Multivariate Data ◽  
Tree Structure
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