932,724 research outputs found
Kim Chua
No full textEducation:
NUS, SG- Bachelor\u27s in Arts and Social Sciences
SIM University, SG- Bachelor\u27s in English Language and Communication Studies
University Of York, UK- Master\u27s in Educational Studies
RSIS, NTU- Master\u27s in Asian Studies
University of Bath, UK- Doctorate Degree in Educational Studies ( Ongoing)
Awards and Experiences:
Awards-
Recipient of the UON (UNIVERSITY OF NEWCASTLE) SINGAPORE EXCELLENCE TEACHING AWARD FOR SESSIONAL ACADEMIC STAFF(FACULTY OF SCIENCE AND IT)
Ms. Kim-Chua has been involved in higher education since 2007.
She has been working at Embry-Riddle Aeronautical University (Asia) since 2013. She teaches subjects ranging from Introduction to Composition, English Composition, Speech and Business Communication.
Prior to joining ERAU, Ms. Kim-Chua worked for 7 years at a Polytechnic in Singapore where she taught the language and communication modules to students across different disciplines ranging from Engineering, Design, Maritime Business as well as Life Sciences.
Ms. Kim-Chua has worked and lived in various countries -- from Vietnam, HongKong to China (PRC).
Interests: Her research interests include career readiness, lifelong learning, adult education and education leadership and policy particularly with an Asian perspective.
In particular, she is especially keen to explore and conduct research that looks at analyzing, explaining and understanding the state of higher education in terms of its economic, social and cultural prerequisites as well as its greater significance for people, organizations and society. Education M.A. - Master of Arts in Teaching English to Young Learners, University of Yorkhttps://commons.erau.edu/aviasian-bios/1024/thumbnail.jp
Chua, Kim
No full textMs. Kim-Chua is currently an Instructor and Director of Student Success with Embry-Riddle Aeronautical University - Asia. In addition to providing instruction in Academic and Technical Communications, she is also primarily in charge of the leadership and direction for the development and implementation of engagement, retention, diversity/inclusion and student success initiatives at Embry-Riddle Aeronautical University - Asia.
A firm believer of global citizenry, Ms. Chua completed a United Nations University International Course in 2010 for UN Systems, Peace and Human Rights and collaborated with UN practitioners to propose suggestions on pressing global issues, including youth employability, gender equality, diversity and inclusion and sustainable education through the achievement of the SDGs.
More recently, she received a full sponsorship from the East-West Center in University of Hawaii to participate in the 18th run of the Asia Pacific Leadership Program where she had the opportunity to work on social innovation labs and learn from some of the world’s leading experts on adaptive leadership, crucial communications and human performance. Her own social innovation lab was exploring ways to encourage female participation in the Asian Aviation landscape.
As of April 2020, she has been selected to be part of the 2020 Cohort of IEP Ambassadors for Positive Peace.
For more information, please refer to https://www.linkedin.com/in/kimchua1/https://commons.erau.edu/aviasian-bios-2021/1015/thumbnail.jp
Exact Inductorless Realization of Chua Circuit Using Two Active Elements
No full textIn this brief, we present two inductorless realizations
of Chua's circuit in an exact form while using only two
active elements, namely a current feedback operational amplifier
(CFOA) for the precise implementation of the Chua circuit equations,
and an op-amp for the realization of the active nonlinear
resistor. First, we analyze the widely used Wien bridge based
modified Chua circuit and apply a variable transformation and
reveal the difference of its mathematical model from the original
Chua circuit in a precise form. Second, we present an exact
inductorless implementation of the Chua circuit employing the
Wien bridge structure, using two active elements only. Third, we
introduce another simple yet exact inductorless implementation
of the Chua circuit with a featured property where the state variable
corresponding to the inductor current of the original Chua
circuit can be accessed as a capacitor voltage. Chaotic attractors
obtained by experimental realizations match well with the
result of numerical simulations, demonstrating the success of the
proposed designs
Re-sounding images: sound and image in an audiovisual age
No full textThis dissertation examines the evolving articulation of sound and image in contemporary culture, with particular reference to film. It argues that sound and image have undergone a historical machined separation, followed by a machined fusion or recombination. The machined fusion of sound and image has enabled the creation of soundful images, which are more than simply the sum of their parts. Through the infusion of sound, images are now routinely reinforced with a performed sense of presence, where they are made to sound more real, more powerful, more authentic. Through association with the image, sounds are reinforced to the extent of becoming 'realer than real'. By tracing the history of sound and image from their initial machined separation to their subsequent machined fusion, it will be argued that a new relationship has been created that has shaped an influential new mode of communication and perception
Chua Ek Kay
No full textChua Ek Kay is regarded as one of Singapore’s leading ink practitioners, celebrated for his distinctive visual vocabulary that bridges Chinese ink painting traditions and Western aesthetics. After the Rain is the first major survey of Chua, covering over three decades of his prolific practice. This catalogue includes essays that illuminate Chua’s approaches to ink painting and underscore his contributions to its development in Singapore. It also features a heretofore unpublished manuscript interview byChua, discovered posthumously in his study, as well as reflections by Mrs Chua Ek Kay. A biographical timeline produced in consultation with Chua’s family further enhances the presentation of his work
Hidden attractors in Chua circuit : mathematical theory meets physical experiments
No full textAfter the discovery in early 1960s by E. Lorenz and Y. Ueda of the first example of a chaotic attractor in numerical simulation of a real physical process, a new scientific direction of analysis of chaotic behavior in dynamical systems arose. Despite the key role of this first discovery, later on a number of works have appeared supposing that chaotic attractors of the considered dynamical models are rather artificial, computer-induced objects, i.e., they are generated not due to the physical nature of the process, but only by errors arising from the application of approximate numerical methods and finite-precision computations. Further justification for the possibility of a real existence of chaos in the study of a physical system developed in two directions. Within the first direction, effective analytic-numerical methods were invented providing the so-called computer-assisted proof of the existence of a chaotic attractor. In the framework of the second direction, attempts were made to detect chaotic behavior directly in a physical experiment, by designing a proper experimental setup. The first remarkable result in this direction is the experiment of L. Chua, in which he designed a simple RLC circuit (Chua circuit) containing a nonlinear element (Chua diode), and managed to demonstrate the real evidence of chaotic behavior in this circuit on the screen of oscilloscope. The mathematical model of the Chua circuit (further, Chua system) is also known to be the first example of a system in which the existence of a chaotic hidden attractor was discovered and the bifurcation scenario of its birth was described. Despite the nontriviality of this discovery and cogency of the procedure for hidden attractor localization, the question of detecting this type of attractor in a physical experiment remained open. This article aims to give an exhaustive answer to this question, demonstrating both a detailed formulation of a radiophysical experiment on the localization of a hidden attractor in the Chua circuit, as well as a thorough description of the relationship between a physical experiment, mathematical modeling, and computer simulation.peerReviewe
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
A fast and simple implementation of Chua\u27s oscillator using a cubic-like Chua diode
No full textThe nonlinearity in Chua\u27s oscillator is commonly implemented as a three-segment piecewise-linear resistor. The piecewise-linear nature of the element means that the implementation requires a significant amount of circuitry and the speed of operation is limited. The qualitative behavior of Chua\u27s oscillator has also been captured using a smooth cubic nonlinearity; the implementation of the latter also requires a significant amount of circuitry and suffers from limited speed of operation. This work describes a novel implementation of Chua\u27s oscillator using just four transistors and a battery to produce a cubic-like nonlinearity. The circuit is simple, robust, and capable of operating at frequencies over one thousand times that of the original Chua\u27s oscillator
Edge of Chaos Theory Explains Complex Phenomena in Memristor Circuits
No full textEdge of Chaos theory explains complex phenomena in memristor
circuits design and unconventional computing. This slide book
chapter discusses the complex necessary conditions of designing
systems built with memristors. The generation of an action potential
and solution of Chua's riddle is explained using the principle of
Local Activity. The complex necessary conditions are stated by Erwin
Schrodinger and Ilya Prigogine through external supply of energy
and non-linearity. Amplifying infinitesimal fluctuations in energy
create the local activity of a physical system. The local activity
principle is explained in depth in the book chapter by Leon Chua,
which lays the foundations of this discussion. The emergence of
complex patterns in a homogeneous medium is well explained in
the local activity principle. Using the theory of non-linear electronic
circuits, nonlinear reaction-diffusion equations in physical systems
were realized using a generic memristor model. A current-controlled
locally passive memristor voltage-current characteristics and its
state solutions for possible operating points are discussed. Generic
memristor model of miniaturized volatile niobium oxide with locally
active behavior and their experimental observations are discussed.
The importance of Memristor Dynamic Route Map under current
control and voltage control, NDR (Negative Differential Resistance)
and PDR (Positive Differential Resistance) operating points on
DC biasing circuits and its stabilization is explained. The chapter
discusses the development of a systematic and rigorous approach
to design bio-inspired circuits with the small-signal memristive
amplifiers outlining the conditions for system complexity according
to the theory of Local Activity and Edge of Chaos. The Edge of Chaos
theory is interpreted as a new physics principle which extends the
Second Law of Thermodynamics to open systems. The principle
explains the hidden mechanisms underlying the emergence of
Heterogeneous patterns in Homogeneous Media
Edge of Chaos Clarifies the Origin for Yet-Unexplained Nonlinear Phenomena in Biological Systems
No full textThis pedagogical article introduces the simplest ever-reported
bio-inspired circuit, which experiences symmetry-breaking
instabilities under the effect of diffusion processes. Leveraging the
capability of a NbO memristor to act as a local source of energy
under suitable polarization, the proposed circuit reproduces the
very same emerging phenomenon, known as destabilization of
the homogeneous, first observed by Alan M. Turing in a two-cell
array back in 1952, while employing half the number of degrees
of freedom as compared to the original reaction-diffusion system
discussed by the father of artificial intelligence.
The proposed circuit is a two-cell memristor cellular neural
network, which employs just two dynamic circuit elements, specifically
two globally-passive yet locally-active volatile resistance
switching memories, based upon niobium oxide and fabricated at
NaMLab, besides three linear and passive resistors, and two DC
voltage sources.
A.M. Turing spent a huge amount of time to tune by trial and
error the coefficients, appearing in the equations of the proposed
fourth-order reaction-diffusion system, so as to demonstrate the
emergence of dissipation-induced symmetry-breaking phenomena
in a homogeneous cellular medium. On the other hand, the
quantitative Theory of Local Activity, applicable universally to
any physical system, allowed us to choose through a systematic
methodology the circuit parameters of each of the two identical
first-order memristive reaction cells so as to poise the composite
second-order cell on the Edge of Chaos, which is the conditio sine
qua non for the emergence of symmetry breaking phenomena,
resulting in the steady-state formation of static patterns, across
the bio-inspired system obtained after closing the composite cell
itself across a suitable linear load resistance.
In summary, together with the other contributions, such as the
article published in the first edition of this book [asc21], the pedagogical
work, presented here, sheds light into the necessity to
recur to the Physics Principle of the Edge of Chaos to gain a deep
understanding of the mechanisms underlying emergent phenomena
in natural systems.
[asc21] A. Ascoli, R. Tetzlaff, A.S. Demirkol, L.O. Chua, ''Edge of
Chaos Theory Explains Complex Phenomena in Memristor Circuits,''
chapter in book entitled ''Selected Topics in Intelligent Chips
with Emerging Devices, Circuits and Systems,'' River Publishers,
Aalborg, Denmark, June 2023, e-ISBN: 978877022764
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