A novel velocity self-sensing magnetorheological damper: Design, fabricate, and experimental analysis

2017 ◽  
Vol 30 (4) ◽  
pp. 497-505 ◽  
Author(s):  
Xinchun Guan ◽  
Yi Ru ◽  
Yonghu Huang
Keyword(s):  
The Self ◽  
Magnetorheological Damper ◽  
Optical Tracking ◽  
Wide Range ◽  
Upper Lid ◽  
Control Capability ◽  
Damper Design ◽  
Tracking Technology ◽  
Circuit Technology ◽  
Optical Mouse

This article presents the development of a novel magnetorheological damper with velocity self-sensing capability. The velocity self-sensing mechanism, based on the optical tracking technology and numerical circuit technology, was adopted. The configuration and work principle of the velocity self-sensing magnetorheological damper were presented. The self-sensing circuits, built with optical mouse sensor and microcontrollers, were integrated into the hollow upper lid. The hollow upper lid provides a suitable place for the self-sensing circuits, can be installed and disassembled easily, and can be maintained efficiently. The velocity self-sensing magnetorheological damper prototype with 10 kN capacity was theoretically analyzed, fabricated, and investigated. Finally, the damping performance, self-sensing performance, and self-sensing control capability were tested and analyzed. The results indicated that self-sensing velocity unit has high accurate monitoring capability over a wide range of working conditions. The velocity self-sensing magnetorheological damper–based control system has sufficient ability to control the magnetorheological damper.

Design of Indoor Large-Scale Multi-Target Precise Positioning and Tracking System

2014 ◽  
Vol 1049-1050 ◽  
pp. 1233-1236
Author(s):  
Hui Qin Sun
Keyword(s):  
Data Fusion ◽  
Large Scale ◽  
Tracking System ◽  
Optical Tracking ◽  
Sensor Data ◽  
Optical Tracking System ◽  
Precise Positioning ◽  
Multi Sensor Data Fusion ◽  
Wide Range ◽  
Tracking Technology

This paper is to build a interior Large-scale multi-target precise positioning and tracking system.In-depth resear of a visual-based optical tracking technology, inertial tracking technology and multi-sensor data fusion technology.Breaking the graphics, images, data fusion, tracking and other related key technologies.Develop high versatility, real-time, robustness of a wide range of high-precision optical tracking system for interior Large-scale multi-target precise positioning and tracking system.

A Comparison of Physiological Demand between Self-Propelled and Motorized Treadmill Exercise

2018 ◽  
Vol 7 (4) ◽  
pp. 13-21
Author(s):  
Todd Backes ◽  
Charlene Takacs
Keyword(s):  
Respiratory Exchange Ratio ◽  
Treadmill Exercise ◽  
Cardiopulmonary Exercise Testing ◽  
Mean Value ◽  
The Self ◽  
Mixing Chamber ◽  
Wide Range ◽  
The Subject ◽  
The Mean ◽  
Computer Controlled

There are a wide range of options for individuals to choose from in order to engage in aerobic exercise; from outdoor running to computer controlled and self-propelled treadmills. Recently, self-propelled treadmills have increased in popularity and provide an alternative to a motorized treadmill. Twenty subjects (10 men, 10 women) ranging in age from 19-23 with a mean of 20.4 ± 0.8 SD were participants in this study. The subjects visited the laboratory on three occasions. The purpose of the first visit was to familiarize the subject with the self-propelled treadmill (Woodway Curve 3.0). The second visit, subjects were instructed to run on the self-propelled treadmill for 3km at a self-determined pace. Speed data were collected directly from the self-propelled treadmill. The third visit used speed data collected during the self-propelled treadmill run to create an identically paced 3km run for the subjects to perform on a motorized treadmill (COSMED T150). During both the second and third visit, oxygen consumption (VO2) and respiratory exchange ratio (R) data were collected with COSMED’s Quark cardiopulmonary exercise testing (CPET) metabolic mixing chamber system. The VO2 mean value for the self-propelled treadmill (44.90 ± 1.65 SE ml/kg/min) was significantly greater than the motorized treadmill (34.38 ± 1.39 SE ml/kg/min). The mean R value for the self-propelled treadmill (0.91 ± 0.01 SE) was significantly greater than the motorized treadmill (0.86 ± 0.01 SE). Our study demonstrated that a 3km run on a self-propelled treadmill does elicit a greater physiological response than a 3km run at on a standard motorized treadmill. Self-propelled treadmills provide a mode of exercise that offers increased training loads and should be considered as an alternative to motorized treadmills.

Expressing the Self

2018 ◽  
Keyword(s):  
Philosophy Of Mind ◽  
The Self ◽  
Epistemic Status ◽  
First Person ◽  
Semantic Categories ◽  
Wide Range ◽  
Person Reference ◽  
De Se ◽  
Novel Method ◽  
Cultural Pragmatics

This book addresses different linguistic and philosophical aspects of referring to the self in a wide range of languages from different language families, including Amharic, English, French, Japanese, Korean, Mandarin, Newari (Sino-Tibetan), Polish, Tariana (Arawak), and Thai. In the domain of speaking about oneself, languages use a myriad of expressions that cut across grammatical and semantic categories, as well as a wide variety of constructions. Languages of Southeast and East Asia famously employ a great number of terms for first-person reference to signal honorification. The number and mixed properties of these terms make them debatable candidates for pronounhood, with many grammar-driven classifications opting to classify them with nouns. Some languages make use of egophors or logophors, and many exhibit an interaction between expressing the self and expressing evidentiality qua the epistemic status of information held from the ego perspective. The volume’s focus on expressing the self, however, is not directly motivated by an interest in the grammar or lexicon, but instead stems from philosophical discussions of the special status of thoughts about oneself, known as de se thoughts. It is this interdisciplinary understanding of expressing the self that underlies this volume, comprising philosophy of mind at one end of the spectrum and cross-cultural pragmatics of self-expression at the other. This unprecedented juxtaposition results in a novel method of approaching de se and de se expressions, in which research methods from linguistics and philosophy inform each other. The importance of this interdisciplinary perspective on expressing the self cannot be overemphasized. Crucially, the volume also demonstrates that linguistic research on first-person reference makes a valuable contribution to research on the self tout court, by exploring the ways in which the self is expressed, and thereby adding to the insights gained through philosophy, psychology, and cognitive science.

Charles Olson and American Modernism

2018 ◽  
Author(s):  
Mark Byers
Keyword(s):  
New York ◽  
Political Action ◽  
The Self ◽  
Instrumental Reason ◽  
Charles Olson ◽  
American Modernism ◽  
Avant Garde ◽  
Wide Range ◽  
American Poet ◽  
Mark Rothko

The Practice of the Self situates the work of American poet Charles Olson (1910–70) at the centre of the early postwar American avant-garde. It shows Olson to have been one of the major advocates and theorists of American modernism in the late 1940s and early 1950s; a poet who responded fully and variously to the political, ethical, and aesthetic urgencies driving innovation across contemporary American art. Reading Olson’s work alongside that of contemporaries associated with the New York Schools of painting and music (as well as the exiled Frankfurt School), the book draws on Olson’s published and unpublished writings to establish an original account of early postwar American modernism. The development of Olson’s work is seen to illustrate two primary drivers of formal innovation in the period: the evolution of a new model of political action pivoting around the radical individual and, relatedly, a powerful new critique of instrumental reason and the Enlightenment tradition. Drawing on extensive archival research and featuring readings of a wide range of artists—including, prominently, Barnett Newman, Mark Rothko, David Smith, Wolfgang Paalen, and John Cage—The Practice of the Self offers a new reading of a major American poet and an original account of the emergence of postwar American modernism.

Interpretation In Qualitative Research: What, Why, How

2020 ◽  
pp. 955-982
Author(s):  
Allen Trent ◽  
Jeasik Cho
Keyword(s):  
Qualitative Research ◽  
Qualitative Inquiry ◽  
The Self ◽  
Validity Evidence ◽  
Wide Range ◽  
Interpretive Strategies

This chapter addresses a wide range of concepts related to interpretation in qualitative research, examines the meaning and importance of interpretation in qualitative inquiry, and explores the ways methodology, data, and the self/researcher as instrument interact and impact interpretive processes. Additionally, the chapter presents a series of strategies for qualitative researchers engaged in the process of interpretation and closes by presenting a framework for qualitative researchers designed to inform their interpretations. The framework includes attention to the key qualitative research concepts transparency, reflexivity, analysis, validity, evidence, and literature. Four questions frame the chapter: What is interpretation, and why are interpretive strategies important in qualitative research? How do methodology, data, and the researcher/self impact interpretation in qualitative research? How do qualitative researchers engage in the process of interpretation? And, in what ways can a framework for interpretation strategies support qualitative researchers across multiple methodologies and paradigms?

Beyond Bias: Critical Analysis and Layered Reading of Mao-Era Sources

2021 ◽  
Vol 29 (4) ◽  
pp. 759-782
Author(s):  
Sigrid Schmalzer
Keyword(s):  
Gold Standard ◽  
Critical Analysis ◽  
Source Material ◽  
The State ◽  
The Self ◽  
Wide Range ◽  
Layered Approach ◽  
Flea Markets ◽  
Mao Era

Abstract Scholars of Mao-era history adopt a wide range of approaches to the selection and treatment of source material. Some scholars regard published sources as propaganda, and therefore as biased and unreliable. For many, archival sources are the gold standard; others question the reliability even of the archive and favor materials that escaped the filtering fingers of the state to be found in flea markets or garbage piles. Avoiding the false choice of either accepting sources as received wisdom or dismissing them as biased, the author argues that how scholars read their sources is more important than which they keep and which they throw away. She advocates for a layered approach that accounts for contexts of production and circulation, and further emphasizes the need to make this process of reading sources visible in our writing. A critical, layered reading of three unlikely sources demonstrates the myriad possibilities for analysis that combines the empirical, the discursive, and the self-reflexive.

Self-powered magnetorheological dampers for motorcycle suspensions

2017 ◽  
Vol 232 (7) ◽  
pp. 921-935 ◽  
Author(s):  
Chao Chen ◽  
Yu Shing Chan ◽  
Li Zou ◽  
Wei-Hsin Liao
Keyword(s):  
Laboratory Testing ◽  
Ride Comfort ◽  
Mechanical Energy ◽  
The Self ◽  
Magnetorheological Damper ◽  
System Level ◽  
Magnetorheological Dampers ◽  
Suspension Systems ◽  
Magnetorheological Suspension ◽  
Self Powered

Dampers are the parts of suspensions which improve the ride comfort and the safety of vehicles including motorcycles. Magnetorheological dampers are very attractive for motorcycle suspensions, because of their controllable properties and their fast responses. Considerable energy is wasted owing to the energy dissipation by dampers encountering road irregularities and accelerating processes during everyday use of motorcycles. In addition, the current magnetorheological suspension systems depend on the power supply of batteries. Therefore, in this paper, a self-powered magnetorheological damper for motorcycle suspensions is proposed and implemented for the first time. It can convert the wasted mechanical energy into useful electrical energy to power itself. There are great merits in this such as energy saving, independence of extra batteries and less maintenance in comparison with conventional magnetorheological suspension systems, while keeping controllable performances. A customized prototype of the self-powered magnetorheological damper that is compatible with a motorcycle is developed and actually implemented in a motorcycle. Modelling for the self-powered magnetorheological damper is developed and validated by laboratory testing. Laboratory testing showed that the self-powered feature works well to generate the electrical power and to vary the magnetorheological damping force. Preliminary system-level testing showed that a self-powered magnetorheological suspension results in a better ride comfort, compared with that of a magnetorheological suspension without power generation. The results showed that implementing self-powered magnetorheological dampers in motorcycle suspensions is feasible and beneficial.

scholarly journals Modification of a Single Atom Affects the Physical Properties of Double Fluorinated Fmoc-Phe Derivatives

2021 ◽  
Vol 22 (17) ◽  
pp. 9634
Author(s):  
Moran Aviv ◽  
Dana Cohen-Gerassi ◽  
Asuka A. Orr ◽  
Rajkumar Misra ◽  
Zohar A. Arnon ◽  
...  
Keyword(s):  
Amino Acid ◽  
Physical Properties ◽  
Self Assembly ◽  
Deep Understanding ◽  
Building Blocks ◽  
The Self ◽  
Single Atom ◽  
Supramolecular Organization ◽  
Assembly Process ◽  
Wide Range

Supramolecular hydrogels formed by the self-assembly of amino-acid based gelators are receiving increasing attention from the fields of biomedicine and material science. Self-assembled systems exhibit well-ordered functional architectures and unique physicochemical properties. However, the control over the kinetics and mechanical properties of the end-products remains puzzling. A minimal alteration of the chemical environment could cause a significant impact. In this context, we report the effects of modifying the position of a single atom on the properties and kinetics of the self-assembly process. A combination of experimental and computational methods, used to investigate double-fluorinated Fmoc-Phe derivatives, Fmoc-3,4F-Phe and Fmoc-3,5F-Phe, reveals the unique effects of modifying the position of a single fluorine on the self-assembly process, and the physical properties of the product. The presence of significant physical and morphological differences between the two derivatives was verified by molecular-dynamics simulations. Analysis of the spontaneous phase-transition of both building blocks, as well as crystal X-ray diffraction to determine the molecular structure of Fmoc-3,4F-Phe, are in good agreement with known changes in the Phe fluorination pattern and highlight the effect of a single atom position on the self-assembly process. These findings prove that fluorination is an effective strategy to influence supramolecular organization on the nanoscale. Moreover, we believe that a deep understanding of the self-assembly process may provide fundamental insights that will facilitate the development of optimal amino-acid-based low-molecular-weight hydrogelators for a wide range of applications.

scholarly journals The Fully Conscious Ape

2018 ◽  
Vol 31 ◽  
Author(s):  
Sue Savage-Rumbaugh ◽  
Itai Roffman ◽  
Sabatien Lingomo ◽  
Elizabeth Pugh
Keyword(s):  
Comparative Studies ◽  
Cognitive Skills ◽  
Nonhuman Primates ◽  
The Self ◽  
The Other ◽  
Human Language ◽  
Wide Range ◽  
Transfer Index ◽  
Modern Era ◽  
Current Experience

Duane Rumbaugh was one of the first primatologists of the modern era (which began after WWII), to engage in comparative studies of the cognitive capacities of nonhuman primates. In fact, it was Rumbaugh who drew the world's attention to the Order Primates and who helped initiate the International Primatological Society, IPS, the first academic society to be organized around an Order rather than a discipline. His work eventually led in two directions, first the development of the Transfer Index, a was completely new way of looking at learning. The TI seperated monkeys from apes as completely as did Gallup's mirror task. From this arose the Primate Test Battery, a video based system to test cognitive skills across a wide range of tasks from memory to numerical skils in primates. The other direction was to look at language and its effect on cognition. Only Apes succeeded in the laguage tasks. With Lana's success arose a raft of critiques that - in the light of more recent findings about the structure of human language, are now rendered invalid. Rumbaugh's initial findings in all domains has remained sound. This includes fundamental differences between monkeys and apes in their capacity to spontaneously begin control their attention, to consciously monitor their own behavior, and then to alter it deliberately, or by their own choice. It is the ape's conscious capacity to control its attention and to conciously monitor outcomes in a cause/effect manner, that allows for the acquisition of langauge. This also allows for the creation of "personal self", as a being that exists apart from the current experience of the self. Language greatly assists the emergence of this ability in apes, as does early rearing in which the ape is carried but not seperated from its mother. This allows pointing and joint reference to appear far ahead of schedule and for the spontaneouls development of human language in cross-species co-reared apes. The presence of a wild-reared mother (not present in other captive environments)also allows for the emergence of a nonhuman form of vocal language. The implications of this work for future investigations of apes are discussed.

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