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2021 ◽  
Vol 3 (2) ◽  
pp. 64
Author(s):  
Shafra Shafra ◽  
Yulia Rahmi

Ideally in the family, the order of marriage starts from the eldest child. Then followed by the second child, the third child and so on. But the reality is different. There are many cases that the youngest child preceded the older brother or sister in marry. In many areas, stepping over older siblings in marriage is commonplace. It doesn't matter whether the one who gets married is a man or woman. However, in Tabu Baraie Nagari Paninjauan Tanah Datar, stepping over an older siblings in marriage is taboo, in particular an older sister. It is forbidden for a sister or brother to step over her/his older sister in marriage. Generally, the older sister who is stepped on by her sister's marriage, her life is single. The aims of this study was to determine the origin of the taboo to step over the marriage of older sisters in a sociological study.Keywords: marriage, stepping over the marriage, older sister.


2021 ◽  
Author(s):  
Jose Manuel Guevara ◽  
Mary Grace Jubb ◽  
Abdulla Seliem ◽  
Hilario Camacho ◽  
Jorge Mario Lozano

Abstract The main goal of this paper is contributing to the understanding to the structural geology, development, and evolution of traps associated with strike-slip restraining bend and restraining step-over structures as a key petroleum system element in southeastern Abu Dhabi. We introduce a preliminary classification scheme for these relatively small, low-relief features defined here as pop-up structures. These structures represent different evolutionary stages of strike-slip restraining bends formed along prominent WNW-trending strike-slip fault systems in southeastern Abu Dhabi. The proposed classification scheme was summarized as a chart to illustrate the correlation between the degree of structural deformation and seal integrity, and estimates the likelihood of finding multiple, vertically stacked, productive reservoirs. It also leads to a more detailed discussion on others important characteristics of pop-up structures and provides a better understanding of sealing mechanisms such as fault juxtaposition, fault throw analysis, fault slip tendency, fault rock processes, and the role of the development of hybrid flower structures in the area. We will also show a simple case study based on two exploratory wells that targeted two pop-up structures with different degrees of deformation in southeast Abu Dhabi. This case study illustrates the complex relationship between pop-up evolution, timing of trap formation, seal integrity, trap preservation, and multiple petroleum generation and migration events. Pop-up structures are linked to multiple episodes of trap and seal evolution, where several episodes of hydrocarbon migration, charge, and leaking of hydrocarbons may occur.


2021 ◽  
Author(s):  
Sarah Hood ◽  
Lukas Gabert ◽  
Tommaso Lenzi

Powered prostheses can enable individuals with above-knee amputations to ascend stairs step-over-step. To accomplish this task, available stair ascent controllers impose a pre-defined joint impedance behavior or follow a pre-programmed position trajectory. These control approaches have proved successful in the laboratory. However, they are not robust to changes in stair height or cadence, which is essential for real-world ambulation. Here we present an adaptive stair ascent controller that enables individuals with above-knee amputations to climb stairs of varying stair heights at their preferred cadence and with their preferred gait pattern. We found that modulating the prosthesis knee and ankle position as a function of the user’s thigh in swing provides toe clearance for varying stair heights. In stance, modulating the torque-angle relationship as a function of the prosthesis knee position at foot contact provides sufficient torque assistance for climbing stairs of different heights. Furthermore, the proposed controller enables individuals to climb stairs at their preferred cadence and gait pattern, such as step-by-step, step-over-step, and two-steps. The proposed adaptive stair controller may improve the robustness of powered prostheses to environmental and human variance, enabling powered prostheses to more easily move from the lab to the real-world.


2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Haiyan Hong ◽  
Zilong Guo ◽  
Hao Sun ◽  
Ping Yu ◽  
Huanhuan Su ◽  
...  

AbstractCold shock protein (Csp) is a typical two-state folding model protein which has been widely studied by biochemistry and single molecule techniques. Recently two-state property of Csp was confirmed by atomic force microscopy (AFM) through direct pulling measurement, while several long-lifetime intermediate states were found by force-clamp AFM. We systematically studied force-dependent folding and unfolding dynamics of Csp using magnetic tweezers with intrinsic constant force capability. Here we report that Csp mostly folds and unfolds with a single step over force range from 5 pN to 50 pN, and the unfolding rates show different force sensitivities at forces below and above ~8 pN, which determines a free energy landscape with two barriers and a transient intermediate state between them along one transition pathway. Our results provide a new insight on protein folding mechanism of two-state proteins.


2021 ◽  
Vol 22 (11) ◽  
pp. 585-593
Author(s):  
V. V. Serebrennyj ◽  
A. A. Boshlyakov ◽  
S. V. Kalinichenko ◽  
A. I. Ogorodnik ◽  
K. V. Konovalov

The article deals with the design of a walking robot with gripping devices that allow the robot to move on arbitrarily oriented surfaces in space. Such robots are relevant primarily for the inspection of various industrial structures. A model of a two-support robot with gripping devices that allow it to be attached to support surfaces with a small curvature, but arbitrarily oriented in space, is proposed. To ensure attachment to the support surfaces, the robot is designed with five degrees of freedom. An important criterion is the possibility of dexterous movement on surfaces. One of the degrees of freedom of the robot was made linear, which makes it easier to step over obstacles and allows you to implement simpler walking algorithms. When the robot is attached to the supporting surfaces by two gripping devices at once, the kinematic chain is closed. This can lead to an increase in forces and moments in the robot’s links. In this paper, it is applied to use two methods of controlling the drives of the links together – the implementation of impedance control by introducing feedback on the evaluation of the moment based on the motor currents and ensuring the pliability of the gripping devices due to its own elasticity. A mathematical simulation of the robot was carried out, which showed the possibility of reducing the forces in the robot links when attaching the robot to two support surfaces at the same time. The best results were achieved when controlling the current vector of a synchronous motor and using current signals to implement impedance control.


Geology ◽  
2021 ◽  
Author(s):  
Pengcheng Shi ◽  
Meng (Matt) Wei ◽  
Robert A. Pockalny

Oceanic transform faults are a significant component of the global plate boundary system and are well known for generating fewer and smaller earthquakes than expected. Detailed studies at a handful of sites support the hypothesis that an abundance of creeping segments is responsible for most of the observed deficiency of earthquakes on those faults. We test this hypothesis on a global scale. We relocate Mw ⩾5 earthquakes on 138 oceanic transform faults around the world and identify creeping segments on these faults. We demonstrate that creeping segments occur on almost all oceanic transform faults, which could explain their deficiency of earthquakes. We also find that most of the creeping segments are not associated with any large-scale geological structure such as a fault step-over, indicating that along-strike variation of fault zone properties may be the main reason for their existence.


2021 ◽  
Vol 71 ◽  
pp. 147-155
Author(s):  
Zhaoyang Yan ◽  
Yun Zhao ◽  
Fan Jiang ◽  
Shujun Chen ◽  
Fang Li ◽  
...  
Keyword(s):  

2021 ◽  
Vol 5 (OOPSLA) ◽  
pp. 1-29
Author(s):  
Kasra Ferdowsifard ◽  
Shraddha Barke ◽  
Hila Peleg ◽  
Sorin Lerner ◽  
Nadia Polikarpova

One vision for program synthesis, and specifically for programming by example (PBE), is an interactive programmer's assistant, integrated into the development environment. To make program synthesis practical for interactive use, prior work on Small-Step Live PBE has proposed to limit the scope of synthesis to small code snippets, and enable the users to provide local specifications for those snippets. This paradigm, however, does not work well in the presence of loops. We present LooPy, a synthesizer integrated into a live programming environment, which extends Small-Step Live PBE to work inside loops and scales it up to synthesize larger code snippets, while remaining fast enough for interactive use. To allow users to effectively provide examples at various loop iterations, even when the loop body is incomplete, LooPy makes use of live execution , a technique that leverages the programmer as an oracle to step over incomplete parts of the loop. To enable synthesis of loop bodies at interactive speeds, LooPy introduces Intermediate State Graph , a new data structure, which compactly represents a large space of code snippets composed of multiple assignment statements and conditionals. We evaluate LooPy empirically using benchmarks from competitive programming and previous synthesizers, and show that it can solve a wide variety of synthesis tasks at interactive speeds. We also perform a small qualitative user study which shows that LooPy's block-level specifications are easy for programmers to provide.


Discourse ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 17-32
Author(s):  
T. V. Kovaleva

Introduction. The aim of the article is to show the socio-philosophical basis of humanitarian expertises and to demonstrate an important role of these technologies in the life of society and the world for solving of current socio-cultural dilemmas. We set ourselves the following tasks: to conduct a socio-philosophical justification of the theoretical foundations of moral expert science, to define three types of humanitarian expertises, to identify the range of their application, to show the significance of their application for society and for professional organizations.Methodology and sources. This work methodologically is based on a socio-philosophical analysis of the works of well-known sociologists and philosophers of the ХХ–XXI centuries who created the foundation for humanitarian expertises as well as on a comparative analysis of the three expertises with the identification of their deferential characteristics.Results and discussion. Thanks to the developed methods and methodologies in sociology, cultural studies, etc., various new approaches were created for the scientific study of the society problems and the consequences of the influence of scientific and technological progress on it. These methods and methodologies which are the basis of humanitarian technologies, allowed us to step over the individual subjectivity and to consider objectively socio-cultural phenomena, based on facts and on the justification of social action. Suggested by Emile Durkheim’s practical sociological method of investigating facts made it possible to combine the forces of specialists in different fields to identify the causes of the appearance of normal and pathological factors and to analyze them. Whereas, M. Weber outlined the methodological foundations of social action with the help of them it is possible to objectively identify the main actions developed by this society. The methods and techniques formed the basis of the humanitarian technologies of three examinations: socio-humanitarian, humanitarian and ethical. There is still no term under which they can be combined so the author’s this article proposed the term – humanitarian. The humanitarian is from the word humanity (humanity), that is, what is inherent in all people including society and its actions. Functional analysis of social and cultural products by Robert Merton and show of ethics micro and macro order by George Ritzer had formed the foundation for modern humanitarian expertises: social humanitarian, humanitarian and ethical.Conclusion. When the role of science in the life of society becomes dominant, it is necessary to have such methodologies with which it will be possible to control the illegal use of scientific achievements, to identify unethical behavior of scientists. The main focus of these expertise is to control the illegal activities of professionals, to protect the interests and health of people.


2021 ◽  
Author(s):  
Sarah Hood ◽  
Lukas Gabert ◽  
Tommaso Lenzi

Powered prostheses can enable individuals with above-knee amputations to ascend stairs step-over-step. To accomplish this task, available stair ascent controllers impose a pre-defined joint impedance behavior or follow a pre-programmed position trajectory. These control approaches have proved successful in the laboratory. However, they are not robust to changes in stair height or cadence, which is essential for real-world ambulation. Here we present an adaptive stair ascent controller that enables individuals with above-knee amputations to climb stairs of varying stair heights at their preferred cadence and with their preferred gait pattern. We found that modulating the prosthesis knee and ankle position as a function of the user’s thigh in swing provides toe clearance for varying stair heights. In stance, modulating the torque-angle relationship as a function of the prosthesis knee position at foot contact provides sufficient torque assistance for climbing stairs of different heights. Furthermore, the proposed controller enables individuals to climb stairs at their preferred cadence and gait pattern, such as step-by-step, step-over-step, and two-steps. The proposed adaptive stair controller may improve the robustness of powered prostheses to environmental and human variance, enabling powered prostheses to more easily move from the lab to the real-world.


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