scholarly journals Mastering Model Uncertainty by Transfer from Virtual to Real System

2021 ◽  
pp. 35-44
Author(s):  
Nicolas Brötz ◽  
Manuel Rexer ◽  
Peter F. Pelz
Keyword(s):  
Time Delay ◽  
Model Uncertainty ◽  
Testing Machine ◽  
Base Point ◽  
The Body ◽  
Test Rig ◽  
Wheel Load ◽  
The Real ◽  
Load Fluctuation ◽  
Quarter Car

AbstractTwo chassis components were developed at the Technische Universität Darmstadt that are used to isolate the body and to reduce wheel load fluctuation.The frequency responses of the components were identified with a stochastic foot point excitation in a hardware-in-the-loop (HiL) simulation environment at the hydropulser. The modelling of the transmission behaviour influence of the testing machine on the frequency response was approximately represented with a time delay of $$10\,\mathrm {ms}$$ 10 ms in the frequency range up to $$25\,\mathrm {Hz}$$ 25 Hz . This is considered by a Padé approximation. It can be seen that the dynamics of the testing machine have an influence on the wheel load fluctuation and the body acceleration, especially in the natural frequency of the unsprung mass. Therefor, the HiL stability is analysed by mapping the poles of the system in the complex plane, influenced by the time delay and virtual damping.This paper presents the transfer from virtual to real quarter car to quantify the model uncertainty of the component, since the time delay impact does not occur in the real quarter car test rig. The base point excitation directly is provided by the testing machine and not like in the case of the HiL test rig, the compression of the spring damper calculated in the real-time simulation.

Prototype of Compact Flexural Fatigue Testing Machine

2014 ◽  
Vol 554 ◽  
pp. 350-354
Author(s):  
Muhammad Azrie Husainy Mohd Jasri ◽  
Mohd Afendi ◽  
A.H.M. Fauzi
Keyword(s):  
Fatigue Failure ◽  
Electromagnetic Force ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Working Environment ◽  
Motion Sensor ◽  
Flexural Fatigue ◽  
The Real ◽  
The Cost ◽  
Dynamic Fatigue

The purpose of this project is to build a prototype of compact flexural fatigue testing machine and to strive for an easy working-environment as required by the users besides cutting the cost of the machining. This particular project is about to build the prototype of compact flexural fatigue testing machine in compact mode. In this project, the prototype will be functioning 60% similar to the real fatigue machine which is Dynamic Fatigue Testing Machine (INSTRON) due to timer counter, frequency and load applied. But the new invention is this prototype was using the concept of electromagnetic force relay that will apply to the specimen using the application of basic electronics. The motion sensor also being applied to this prototype to achieve accurate results when the specimen breaks up after undergoes a fatigue failure.

The Doctrine of Transubstantiation in Durand's Rationale

Traditio ◽  
1996 ◽  
Vol 51 ◽  
pp. 308-317
Author(s):  
Timothy M. Thibodeau
Keyword(s):  
Thirteenth Century ◽  
Recent Article ◽  
The Body ◽  
Final Word ◽  
The Real ◽  
Eucharistic Theology ◽  
Real Presence ◽  
Fourth Lateran Council

In a recent article on the medieval dogma of transubstantiation, Gary Macy builds upon the works of Hans Jorissen and James F. McCue to question the validity of Jaroslav Pelikan's claim that “at the Fourth Lateran Council in 1215, the doctrine of the real presence of the body and blood of Christ in the Eucharist achieved its definitive formulation in the dogma of transubstantiation.” Macy demonstrates that through most of the thirteenth century, the majority of theologians did not, in fact, consider Lateran IV's decree the final word on eucharistic theology. The debate over precisely how the real presence of Christ occurred in the eucharist was far from closed.

Comparison of two different types of fractional-order COVID-19 distributed time-delay models with real data application

2021 ◽  
pp. 2150219
Author(s):  
Liangli Yang ◽  
Yongmei Su ◽  
Xinjian Zhuo
Keyword(s):  
Time Delay ◽  
Fractional Order ◽  
Distributed Delay ◽  
Real Data ◽  
Least Square ◽  
Order Model ◽  
The Real ◽  
Fractional Order Model ◽  
Different Types ◽  
Distributed Time Delay

The outbreak of COVID-19 has a great impact on the world. Considering that there are different infection delays among different populations, which can be expressed as distributed delay, and the distributed time-delay is rarely used in fractional-order model to simulate the real data, here we establish two different types of fractional order (Caputo and Caputo–Fabrizio) COVID-19 models with distributed time-delay. Parameters are estimated by the least-square method according to the report data of China and other 12 countries. The results of Caputo and Caputo–Fabrizio model with distributed time-delay and without delay, the integer-order model with distributed delay are compared. These show that the fractional-order model can be better in fitting the real data. Moreover, Caputo order is better in short-term time fitting, Caputo–Fabrizio order is better in long-term fitting and prediction. Finally, the influence of several parameters is simulated in Caputo order model, which further verifies the importance of taking strict quarantine measures and paying close attention to the incubation period population.

Music in migrant camps as a medium creating non-narrative human relationships

2021 ◽  
Vol 12 (1) ◽  
pp. 347-360
Author(s):  
Julien Labia
Keyword(s):  
At Risk ◽  
Personal Identity ◽  
Direct Relationship ◽  
The Body ◽  
Verbal Art ◽  
Problematic Situation ◽  
Human Relationships ◽  
The Real ◽  
Musical Interactions ◽  
Expressive Activity

A migrant camp is a ‘non-place’ where personal identity is put at risk. Music is a means of personal adaptation in camps, even if it means allowing little place for the real reasons for displacement of the very people shaping these new hybridizations of music. The present power of music in such a place is to create strong relationships, ‘shortcutting’ both narration and the longer time needed in order to create relationships. The kind of personal advantage it is for someone to be a musician is a topic surprisingly forgotten, obscured by theoretical habits of seeing music essentially as an expressive activity directed to an audience, or as being a communicative activity. Music has a performative power different from language, as a non-verbal art having a strong and direct relationship to the body. Musical interactions on the field give migrants the ability to balance their problematic situation of refugees, shaping a real present.

Bodies of Meaning: Studies on Language, Labor, and Liberation. By David McNally. Albany: State University of New York Press, 2000. 277p. $72.50 cloth, $23.95 paper.

2002 ◽  
Vol 96 (1) ◽  
pp. 189-191
Author(s):  
Nicholas Xenos
Keyword(s):  
New York ◽  
Human Body ◽  
Social Life ◽  
Walter Benjamin ◽  
The Body ◽  
The Other ◽  
State University ◽  
The Real

David McNally styles this book as beginning in a polemic and ending in a “materialist approach to language” much indebted to the German critic Walter Benjamin. The charge is that “postmodernist theory, whether it calls itself poststructuralism, deconstruction or post-Marxism, is constituted by a radical attempt to banish the real human body—the sensate, biocultural, laboring body—from the sphere of language and social life” (p. 1). By treating language as an abstraction, McNally argues, postmodernism constitutes a form of idealism. More than that, it succumbs to and perpetuates the fetishism of commodities disclosed by Marx insofar as it treats the products of human laboring bodies as entities independently of them. Clearly irritated by the claims to radicalism made by those he labels postmodern, McNally thinks he has found their Achilles' heel: “The extra-discursive body, the body that exceeds language and discourse, is the ‘other’ of the new idealism, the entity it seeks to efface in order to bestow absolute sovereignty on language. To acknowledge the centrality of the sensate body to language and society is thus to threaten the whole edifice of postmodernist theory” (p. 2).

scholarly journals The Promise of Creativity

2012 ◽  
Vol 6 (1) ◽  
pp. 389-407 ◽  
Author(s):  
Maxine E. Sprague ◽  
Jim Parsons
Keyword(s):  
Real World ◽  
Teaching And Learning ◽  
The Body ◽  
The Real ◽  
Digital World ◽  
Body Of Knowledge ◽  
Imaginative Play ◽  
A Priority ◽  
The Impact

In this paper, the authors discuss creativity and the impact it might have on teaching and learning. The authors believe that imaginative play, at all ages, helps all people (children especially) create healthy environments and spaces that expand their learning. The authors contend that teaching for imagination—which asks little more than creating and trusting an ecological space that engenders it—seldom is considered a priority. Given the emphasis on creativity in the real world and the virtual digital world, the authors believe it is important to add to the body of knowledge through continued research in this field.

scholarly journals Tindakan Preventif Kepolisian dalam Menanggulangi Penyalahgunaan Minuman Keras (Miras) di Wilayah Hukum Polda Bali

2021 ◽  
Vol 2 (2) ◽  
pp. 213-217
Author(s):  
Anak Agung Satria Adhi Wiguna ◽  
Anak Agung Sagung Laksml Dewi ◽  
Luh Putu Sury Ani
Keyword(s):  
Alcohol Abuse ◽  
Empirical Research ◽  
The Body ◽  
External Factors ◽  
Real Condition ◽  
The Real ◽  
Community Or ◽  
Legal Problems ◽  
Internal And External Factors

Alcohol is a stimulant because the elements it contains can rejuvenate the body, but this view is wrong because stimulants are only temporary. People who drink alcohol lack a sense of prevention or inhibition.People who drink alcohol lack a sense of prevention or inhibition. The research used in this research is a type of empirical research, where research is carried out on the real condition of the community or environment, with the aim of finding facts or existing legal problems. Seeing the obstacles faced by the police in implementing the "Alcohol Abuse Law" in the Bali police area, many factors have caused the Bali Police to face many obstacles in implementing the Anti Alcohol Abuse (Miras) Law, including internal and external factors that make Bali. Based on the background of the problems described, it can be concluded that the actions taken by the police to address alcohol abuse in the Bali Police area. Within the jurisdiction of the Polda in Bali, the obstacles faced by the police in enforcing laws regarding alcohol abuse.

scholarly journals Physiological and Disease Models of Respiratory System Based on Organ-on-a-Chip Technology

Micromachines ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1106
Author(s):  
Di Wang ◽  
Ye Cong ◽  
Quanfeng Deng ◽  
Xiahe Han ◽  
Suonan Zhang ◽  
...  
Keyword(s):  
Respiratory Diseases ◽  
Solute Concentration ◽  
The Body ◽  
The Real ◽  
Growth State ◽  
Chip Technology ◽  
Organ On A Chip ◽  
And Function ◽  
Multiple Cells

The pathogenesis of respiratory diseases is complex, and its occurrence and development also involve a series of pathological processes. The present research methods are have difficulty simulating the natural developing state of the disease in the body, and the results cannot reflect the real growth state and function in vivo. The development of microfluidic chip technology provides a technical platform for better research on respiratory diseases. The size of its microchannel can be similar to the space for cell growth in vivo. In addition, organ-on-a-chip can achieve long-term co-cultivation of multiple cells and produce precisely controllable fluid shear force, periodically changing mechanical force, and perfusate with varying solute concentration gradient. To sum up, the chip can be used to analyze the specific pathophysiological changes of organs meticulously, and it is widely used in scientific research on respiratory diseases. The focus of this review is to describe and discuss current studies of artificial respiratory systems based on organ-on-a-chip technology and to summarize their applications in the real world.

scholarly journals The virtual and the real. Digital culture and the body in the study of handwriting

2021 ◽  
Vol 5 (1) ◽  
pp. 11-26
Author(s):  
Ewan Clayton
Keyword(s):  
Western Culture ◽  
The Body ◽  
Digital Culture ◽  
Cultural Shift ◽  
The Real ◽  
Digital World

Abstract Since Traube (1861-1907) paleography has been concerned primarily with methods for transcribing, dating and placing texts. This paper responds to two changes in perspective that have occurred within western culture over the last century: the arrival of a digital world which saw the transformation of computers from calculating devices into new tools for writing and reading and a cultural shift away from a Cartesian perspective that distinguishes between body and mind and privileges self aware rationality over felt experience. For the purposes of this paper the link between these trends is that both throw new emphasis on writing as an activity rather than a product. This paper looks at how insights from the digital, and body-based disciplines of document creation might then interact with the paleographical and each other. The influences all run both ways, the paleographical can effect the digital as much an understanding of the digital can bring new ways of seeing to the paleographical.

scholarly journals Artifact Elimination in Impedance Cardiography using Gradient based Adaptive Signal Enhancement Techniques

2019 ◽  
Vol 8 (2) ◽  
pp. 598-606
Keyword(s):  
Stroke Volume ◽  
Blood Volume ◽  
Impedance Cardiography ◽  
Signal Enhancement ◽  
The Body ◽  
Body Segment ◽  
Volume Changes ◽  
The Real ◽  
Adaptive Techniques ◽  
Adaptive Signal

Impedance Cardiography (ICG) is a noninvasive method for indirect measurement of stroke volume, monitoring the cardiac output and observing the other hemodynamic parameters by the blood volume changes in the body. The blood volume changes inside a certain body segment due to a number of physiological processes are extracted in the form of the impedance variations of the body segment. The ICG analysis provides the heart stroke volume in sudden cardiac arrest. In the clinical environment desired ICG signals are influenced by several physiological and non-physiological artifacts.As these artifacts are not stationary in nature, we proposed adaptive filtering techniques to eliminate the artifacts. In this paper we used Least Mean Square (LMS), Least Mean Fourth (LMF), Median LMS (MLMS), Leaky LMS (LLMS), and Dead Zone (DZLMS) adaptive techniques to eliminate artifacts from the desired signals. Several adaptive signal enhancement units (ASEUs) are developed based on these adaptive techniques, and evaluated on the real ICG signal components. The ability of these algorithms is evaluated by performing the experiments to eliminate the various artifacts such as sinusoidal artifacts (SA), respiration artifacts (RA), muscle artifacts (MA) and electrode artifacts (EA). Among these techniques, the DZLMS based ASEU performs better in the filtering process. The signal to noise ratio improvement (SNRI) for this algorithm is calculated as 11.9140 dB, 7.3657 dB, 10.4060 dB and 10.5125 dB respectively for SA, RA, MA and EA. Hence, the DZLMS based ASEUs are well suitable for ICG filtering in the real time health care monitoring systems.

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