Unmanned Aerial and Ground Vehicle Teams: Recent Work and Open Problems

2013 ◽  
pp. 21-36 ◽  
Author(s):  
Steven L. Waslander
Keyword(s):  
Recent Work ◽  
Open Problems ◽  
Ground Vehicle

ON THE INDUCTIVE LIMIT STRUCTURE OF ORDER FOUR AUTOMORPHISMS OF THE IRRATIONAL ROTATION ALGEBRA

2006 ◽  
Vol 17 (01) ◽  
pp. 107-117 ◽  
Author(s):  
S. WALTERS
Keyword(s):  
Fixed Point ◽  
Recent Work ◽  
Inductive Limit ◽  
Irrational Rotation ◽  
Open Problems ◽  
Finite Dimensional ◽  
The Matrix ◽  
Matrix Formula ◽  
Fixed Point Algebra ◽  
Order Four

It is shown that there exists an order four automorphism of the irrational rotation algebra Aθ that leaves invariant an increasing sequence of unital C*-subalgebras consisting of two circles and two points and such that its induced map on K1(Aθ) is given by the matrix [Formula: see text]. The resulting fixed point algebra is shown to be approximately finite-dimensional. A brief survey of recent work on the canonical finite order automorphisms of Aθ is given and some open problems are posed.

scholarly journals STATUS OF HADRONIC LIGHT-BY-LIGHT SCATTERING IN THE MUON g – 2

2014 ◽  
Vol 35 ◽  
pp. 1460456 ◽  
Author(s):  
ANDREAS NYFFELER
Keyword(s):  
Light Scattering ◽  
Recent Work ◽  
Current Situation ◽  
Open Problems ◽  
The Status ◽  
Work List ◽  
Scattering Contribution

We give an update on the status of the hadronic light-by-light scattering contribution to the muon g – 2. We review recent work, list some open problems and give an outlook on how to better control the uncertainty of this contribution. We think the estimate [Formula: see text] still gives a fair description of the current situation.

A SURVEY OF OBJECT-SPACE HIDDEN SURFACE REMOVAL

1994 ◽  
Vol 04 (03) ◽  
pp. 325-362 ◽  
Author(s):  
SUSAN E. DORWARD
Keyword(s):  
Recent Work ◽  
Open Problems ◽  
Object Space ◽  
Polyhedral Terrains ◽  
History Of ◽  
Hidden Surface Removal ◽  
Priority Ordering ◽  
Surface Removal

We present a survey of the hidden surface removal literature, focusing on object-space algorithms. We give a brief definition and history of the problem, followed by a discussion of problems and algorithms associated with the priority ordering of faces. We go on to examine object-space algorithms in order of increasing object complexity: xy-parallel rectangles, ordered triangles, c-oriented faces, c-oriented polyhedra, polyhedral terrains, and general polyhedra. We also review recent work on merging visibility maps and moving viewpoints. Finally, we present a list of open problems.

Robotics In Vivo: A Perspective on Human–Robot Interaction in Surgical Robotics

2020 ◽  
Vol 3 (1) ◽  
pp. 221-242
Author(s):  
Alaa Eldin Abdelaal ◽  
Prateek Mathur ◽  
Septimiu E. Salcudean
Keyword(s):  
Recent Work ◽  
Neck Surgery ◽  
Research Area ◽  
Human Robot Interaction ◽  
Surgical Robots ◽  
Robot Interaction ◽  
Open Problems ◽  
Safety Issues ◽  
Human Aspects

This article reviews recent work on surgical robots that have been used or tested in vivo, focusing on aspects related to human–robot interaction. We present the general design requirements that should be considered when developing such robots, including the clinical requirements and the technologies needed to satisfy them. We also discuss the human aspects related to the design of these robots, considering the challenges facing surgeons when using robots in the operating room, and the safety issues of such systems. We then survey recent work in seven different surgical settings: urology and gynecology, orthopedic surgery, cardiac surgery, head and neck surgery, neurosurgery, radiotherapy, and bronchoscopy. We conclude with the open problems and recommendations on how to move forward in this research area.

scholarly journals Elliptic Curves and Modular Forms

1991 ◽  
Vol 34 (3) ◽  
pp. 375-384
Author(s):  
M. Ram Murty
Keyword(s):  
Elliptic Curves ◽  
Recent Work ◽  
Modular Forms ◽  
Open Problems ◽  
Rank Zero ◽  
Tate Group ◽  
Recent Developments ◽  
The Subject ◽  
Informal Discussion

AbstractThis is a survey of some recent developments in the theory of elliptic curves. After an informal discussion of the main theorems of the arithmetic side of the theory and the open problems confronting the subject, we describe the recent work of K. Rubin, V. Koly vagin, K. Murty and the author which establishes the finiteness of the Shafarevic-Tate group for modular elliptic curves of rank zero and one.

Cognition-Enabled Robot Manipulation in Human Environments: Requirements, Recent Work, and Open Problems

2017 ◽  
Vol 24 (3) ◽  
pp. 108-122 ◽  
Author(s):  
Mustafa Ersen ◽  
Erhan Oztop ◽  
Sanem Sariel
Keyword(s):  
Recent Work ◽  
Open Problems ◽  
Robot Manipulation

What sentimentalists should say about emotion

2019 ◽  
Vol 42 ◽  
Author(s):  
Charlie Kurth
Keyword(s):  
Moral Judgment ◽  
Recent Work ◽  
Relevant Information ◽  
Moral Cognition ◽  
Multilevel Structure

Abstract Recent work by emotion researchers indicates that emotions have a multilevel structure. Sophisticated sentimentalists should take note of this work – for it better enables them to defend a substantive role for emotion in moral cognition. Contra May's rationalist criticisms, emotions are not only able to carry morally relevant information, but can also substantially influence moral judgment and reasoning.

The Sun as a Magnetic Star

1976 ◽  
Vol 32 ◽  
pp. 457-463
Author(s):  
John M. Wilcox ◽  
Leif Svalgaard
Keyword(s):  
Recent Work ◽  
Rotation Axis ◽  
Polar Field ◽  
Magnetic Star ◽  
Rotational Axis ◽  
Field Variation ◽  
The Sun ◽  
Arbitrary Angle ◽  
Solar Magnetism ◽  
Oblique Rotator

SummaryThe sun as a magnetic star is described on the basis of recent work on solar magnetism. Observations at an arbitrary angle to the rotation axis would show a 22-year polar field variation and a 25-day equatorial sector variation. The sector variation would be similar to an oblique rotator with an angle of 90° between the magnetic and rotational axis.

Microstructural comparison of synthetic bioceramics with natural bioceramics

1991 ◽  
Vol 49 ◽  
pp. 38-39
Author(s):  
Shulin Wen ◽  
Jingwei Feng ◽  
A. Krajewski ◽  
A. Ravaglioli
Keyword(s):  
Recent Work ◽  
Human Body ◽  
Human Tissues ◽  
Main Constituent ◽  
Laboratory Furnace ◽  
Chinese Adult ◽  
Human Enamel ◽  
Biological Compatibility ◽  
Synthetic Hydroxyapatite ◽  
Synthetic Work

Hydroxyapatite bioceramics has attracted many material scientists as it is the main constituent of the bone and the teeth in human body. The synthesis of the bioceramics has been performed for years. Nowadays, the synthetic work is not only focused on the hydroapatite but also on the fluorapatite and chlorapatite bioceramics since later materials have also biological compatibility with human tissues; and they may also be very promising for clinic purpose. However, in comparison of the synthetic bioceramics with natural one on microstructure, a great differences were observed according to our previous results. We have investigated these differences further in this work since they are very important to appraise the synthetic bioceramics for their clinic application.The synthetic hydroxyapatite and chlorapatite were prepared according to A. Krajewski and A. Ravaglioli and their recent work. The briquettes from different hydroxyapatite or chlorapatite powders were fired in a laboratory furnace at the temperature of 900-1300°C. The samples of human enamel selected for the comparison with synthetic bioceramics were from Chinese adult teeth.

Substrate specificity and inducibility of TACE (tumour necrosis factor α-converting enzyme) revisited: the Ala-Val preference, and induced intrinsic activity

2003 ◽  
Vol 70 ◽  
pp. 39-52 ◽  
Author(s):  
Roy A. Black ◽  
John R. Doedens ◽  
Rajeev Mahimkar ◽  
Richard Johnson ◽  
Lin Guo ◽  
...  
Keyword(s):  
Substrate Specificity ◽  
Recent Work ◽  
Tumour Necrosis Factor ◽  
Tumour Necrosis ◽  
Transforming Growth Factor ◽  
Intrinsic Activity ◽  
Converting Enzyme ◽  
Tumour Necrosis Factor Α ◽  
Factor Α ◽  
Necrosis Factor

Tumour necrosis factor α (TNFα)-converting enzyme (TACE/ADAM-17, where ADAM stands for a disintegrin and metalloproteinase) releases from the cell surface the extracellular domains of TNF and several other proteins. Previous studies have found that, while purified TACE preferentially cleaves peptides representing the processing sites in TNF and transforming growth factor α, the cellular enzyme nonetheless also sheds proteins with divergent cleavage sites very efficiently. More recent work, identifying the cleavage site in the p75 TNF receptor, quantifying the susceptibility of additional peptides to cleavage by TACE and identifying additional protein substrates, underlines the complexity of TACE-substrate interactions. In addition to substrate specificity, the mechanism underlying the increased rate of shedding caused by agents that activate cells remains poorly understood. Recent work in this area, utilizing a peptide substrate as a probe for cellular TACE activity, indicates that the intrinsic activity of the enzyme is somehow increased.

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