The Adaptive Nature of 3D Perception

1993 ◽  
Keyword(s):  
3D Perception ◽  
Adaptive Nature

Crustacea: Lophogastrida and Mysida

2017 ◽  
Author(s):  
Claudia Castellani ◽  
Maiju Lehtiniemi ◽  
Kenneth Meland
Keyword(s):  
Life Cycle ◽  
Ballast Water ◽  
Water Systems ◽  
Tree Of Life ◽  
Brood Pouch ◽  
General Morphology ◽  
Family Level ◽  
Adaptive Nature

This chapter describes the taxonomy of Lophogastrida and Mysida, small shrimp-like crustaceans commonly known as ‘opossum shrimps’ because of the ventral brood pouch in the female. Because of their highly adaptive nature, they have progressively invaded new areas via new connections of water systems and through ballast water. The chapter covers their life cycle, ecology, and general morphology. It includes a section that indicates the systematic placement of the taxon described within the tree of life, and lists the key marine representative illustrated in the chapter (usually to genus or family level). This section also provides information on the taxonomic authorities responsible for the classification adopted, recent changes which might have occurred, and lists relevant taxonomic sources.

scholarly journals In vitro biological activity of Hydroclathrus clathratus and its use as an extracellular bioreductant for silver nanoparticle formation

2020 ◽  
Vol 9 (1) ◽  
pp. 416-428 ◽  
Author(s):  
Raghad R. Alzahrani ◽  
Manal M. Alkhulaifi ◽  
Nouf M. Al-Enazi
Keyword(s):  
Biological Activity ◽  
Unsaturated Fatty Acids ◽  
Multidrug Resistant ◽  
Chemical Components ◽  
Resistant Bacteria ◽  
Transmission Electron ◽  
Hydroclathrus Clathratus ◽  
Adaptive Nature ◽  
First Time

AbstractThe adaptive nature of algae results in producing unique chemical components that are gaining attention due to their efficiency in many fields and abundance. In this study, we screened the phytochemicals from the brown alga Hydroclathrus clathratus and tested its ability to produce silver nanoparticles (AgNPs) extracellularly for the first time. Lastly, we investigated its biological activity against a variety of bacteria. The biosynthesized nanoparticles were characterized by UV-visible spectroscopy, Fourier-transform infrared spectroscopy, dynamic light scattering, transmission electron microscopy, and energy-dispersive spectroscopy. The biological efficacy of AgNPs was tested against eighteen different bacteria, including seven multidrug-resistant bacteria. Phytochemical screening of the alga revealed the presence of saturated and unsaturated fatty acids, sugars, carboxylic acid derivatives, triterpenoids, steroids, and other components. Formed AgNPs were stable and ranged in size between 7 and 83 nm and presented a variety of shapes. Acinetobacter baumannii, Staphylococcus aureus, Methicillin-resistant S. aureus (MRSA), and MDR A. baumannii were the most affected among the bacteria. The biofilm formation and development assay presented a noteworthy activity against MRSA, with an inhibition percentage of 99%. Acknowledging the future of nano-antibiotics encourages scientists to explore and enhance their potency, notably if they were obtained using green, rapid, and efficient methods.

scholarly journals Adaptive Foot in Lower-Limb Prostheses

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Thilina H. Weerakkody ◽  
Thilina Dulantha Lalitharatne ◽  
R. A. R. C. Gopura
Keyword(s):  
Lower Limb ◽  
Uneven Surface ◽  
Design Concepts ◽  
Human Foot ◽  
Future Developments ◽  
Adaptive Capabilities ◽  
Adaptive Nature ◽  
Lower Limb Amputees ◽  
Artificial Prosthesis ◽  
Lower Limb Prostheses

The human foot consists of complex sets of joints. The adaptive nature of the human foot enables it to be stable on any uneven surface. It is important to have such adaptive capabilities in the artificial prosthesis to achieve most of the essential movements for lower-limb amputees. However, many existing lower-limb prostheses lack the adaptive nature. This paper reviews lower-limb adaptive foot prostheses. In order to understand the design concepts of adaptive foot prostheses, the biomechanics of human foot have been explained. Additionally, the requirements and design challenges are investigated and presented. In this review, adaptive foot prostheses are classified according to actuation method. Furthermore, merits and demerits of present-day adaptive foot prostheses are presented based on the hardware construction. The hardware configurations of recent adaptive foot prostheses are analyzed and compared. At the end, potential future developments are highlighted.

An Alternative Method for Scoring Adaptive Tests

1996 ◽  
Vol 21 (4) ◽  
pp. 365-389 ◽  
Author(s):  
Martha L. Stocking
Keyword(s):  
Computerized Adaptive Testing ◽  
Adaptive Testing ◽  
Public Attention ◽  
Adaptive Tests ◽  
Adaptive Test ◽  
Alternative Method ◽  
Correct Score ◽  
Conventional Tests ◽  
Test Scoring ◽  
Adaptive Nature

Modern applications of computerized adaptive testing are typically grounded in item response theory (IRT; Lord, 1980 ). While the IRT foundations of adaptive testing provide a number of approaches to adaptive test scoring that may seem natural and efficient to psychometricians, these approaches may be more demanding for test takers, test score users, and interested regulatory institutions to comprehend. An alternative method, based on more familiar equated number-correct scores and identical to that used to score and equate many conventional tests, is explored and compared with one that relies more directly on IRT. It is concluded that scoring adaptive tests using the familiar number-correct score, accompanied by the necessary equating to adjust for the intentional differences in adaptive test difficulty, is a statistically viable, although slightly less efficient, method of adaptive test scoring. To enhance the prospects for enlightened public debate about adaptive testing, it may be preferable to use this more familiar approach. Public attention would then likely be focused on issues more central to adaptive testing, namely, the adaptive nature of the test.

scholarly journals Towards an Efficient Tomato Harvesting Robot: 3D Perception, Manipulation, and End-Effector

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 17631-17640
Author(s):  
Jongpyo Jun ◽  
Jeongin Kim ◽  
Jaehwi Seol ◽  
Jeongeun Kim ◽  
Hyoung Il Son
Keyword(s):  
3D Perception ◽  
End Effector ◽  
Harvesting Robot

Abstract P717: Central Midbrain Strokes Are More Liable for Respiratory Failure Then Other Brain Stem Strokes

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Omar M Hussein ◽  
Eder Caceres ◽  
kasser saba ◽  
Hera Kamdar ◽  
khalid Sawalha ◽  
...  
Keyword(s):  
Respiratory Failure ◽  
Brain Stem ◽  
Medulla Oblongata ◽  
Multivariate Regression ◽  
Clear Understanding ◽  
Regression Analyses ◽  
Periaqueductal Grey ◽  
Stroke Registry ◽  
Adaptive Nature ◽  
The Brain

Background: Respiratory centers are known to be present in the central medulla oblongata and pons. There are multiple complex respiratory networks involving these centers. The midbrain periaqueductal grey is believed to act as a regulator of the respiratory function. The effect of brain-stem strokes on respiration remains understudied. There is a lack of clear understanding of the anatomical influence of such strokes on respiration. We attempted to identify brain-stem locations with the highest liability for respiratory failure in case of stroke. Methods: We included all ischemic and hemorrhagic brain-stem strokes from our stroke-registry between 2016 and 2018 then performed univariate/multivariate regression-analyses on variables that might predict respiratory failure and the need for intubation. The brain stem was divided into nine locations (right lateral, central, left lateral in each of the midbrain, pons, and medulla oblongata). Results: Out of 128 brain-stem strokes of different sizes and etiologies, central midbrain strokes were the only significant and independent affected location associated with respiratory failure and endotracheal intubation (coefficient= 0.1256, 95%-CI= 0.0175, 0.2338, p= 0.023). R-squared was equal to 15% when only central midbrain strokes stayed in the model. Conclusions: While one might assume that central medullary and pontine strokes have the most impact on respiration; our results show that central midbrain is the most impactful, accounting for about 15% of respiratory instability associated with brain-stem strokes. This can be explained by the adaptive nature of respiratory circuits within the medulla and pons. Central periaqueductal grey within the midbrain controls the rate and depth of respiration and might not have the same flexibility present elsewhere.

New Trends in Interaction of Developed and Developing Countries in Innovation Sphere

2012 ◽  
pp. 3-14
Author(s):  
A. Eroshkin ◽  
M. Petrov
Keyword(s):  
Developing Countries ◽  
International Relations ◽  
Low Income ◽  
Large Scale ◽  
Research Capacity ◽  
Transnational Corporations ◽  
Income Groups ◽  
Global Innovation ◽  
Low Income Groups ◽  
Adaptive Nature

The economic and innovative rise of the developing states stimulated a deep restructuring of the existing system of international relations in science and technology sphere. As the article points, one of the main manifestations of this trend can be seen in the transformation of global innovation strategies of transnational corporations. The world’s largest TNCs, mostly based in the industrial nations, have begun to transfer growing segments and parts of their R&D programs to the developing countries in order to take advantage of their increased research capacity. As a result, the nature of the projects being implemented there by the TNCs is changing. Historically, the TNCs’ local R&D activities were of adaptive nature. Namely, the stress was made on modification of the products and services offered by the TNCS globally to the specifics of local markets. Currently, a growing number of transnational corporations are implementing the large-scale programs in the developing countries aimed at designing new types of products, including those targeted at the low-income groups of consumers that make up the bulk of the population in developing countries.

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