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"This fourth issue on "progress in turbulence" is based on the fourth ITI conference (ITI interdisciplinary turbulence initiative), which took place in Bertinoro, North Italy. Leading researchers from the engineering and physical sciences presented latest results in turbulence research. Basic as well as applied research is driven by the rather notorious difficult and essentially unsolved problem of turbulence. In this collection of contributions clear progress can be seen in different aspects, ranging from new quality of numerical simulations to new concepts of experimental investigations and new theoretical developments. The importance of turbulence is shown for a wide range of applications including: combustion, energy, flow control, urban flows, are few examples found in this volume. A motivation was to bring fundamentals of turbulence in connection with renewable energy. This lead us to add a special topic relevant to the impact of turbulence on the wind energy conversion. The structure of the present book is as such that contributions have been bundled according to covering topics i.e. I Basic Turbulence Aspects, II Particle Laden Flows, III Modeling and Simulations, IV, Experimental Methods, V Special Flows, VI Atmospheric Boundary Layer, VII Boundary Layer, VIII Wind Energy and IX Convection. This book is dedicated to the memory of Prof. Tim Nickels. Shortly after giving an invited lecture at the 4th ITI conference, the turbulence community lost a world-class scientist, a friend and devoted family man."

"This second volume concentrates on reviewing further relevant, contemporary applications of chaotic nonlinear systems as they apply to the various cutting-edge branches of engineering. This encompasses, but is not limited to, topics such as the spread of epidemics; electronic circuits; chaos control in mechanical devices; secure communication; and digital watermarking. "

"This book compiles recent research in the field of nonlinear dynamics, vibrations and damping applied to engineering structures. It addresses the modeling of nonlinear vibrations in beams, frames and complex mechanical systems, as well as the modeling of damping systems and viscoelastic materials applied to structural dynamics. The book includes several chapters related to solution techniques and signal analysis techniques. Last but not least, it deals with the identification of nonlinear responses applied to condition monitoring systems. "

"This book presents contributions on the current problems in a number of topical areas of nonlinear dynamics and physics, written by experts from Russia, Ukraine, Israel, Germany, Poland, Italy, the Netherlands, the USA, and France.The book is dedicated to Professor Leonid I. Manevitch, an outstanding scholar in the fields of Mechanics of Solids, Nonlinear Dynamics, and Polymer Physics, on the occasion of his 80th birthday."

"This thesis describes the first demonstration of a cooperative optical non-linearity based on Rydberg excitation. Whereas in conventional non-linear optics the non-linearity arises directly from the interaction between light and matter, in a cooperative process it is mediated by dipole-dipole interactions between light-induced excitations. For excitation to high Rydberg states where the electron is only weakly bound, the dipole-dipole interactions are extremely large and long range, enabling an enormous enhancement of the non-linear effect. Consequently, cooperative non-linear optics using Rydberg excitations opens a new era for quantum optics enabling large single photon non-linearity to be accessible in free space for the first time. The thesis describes the theoretical underpinnings of the non- linear effect, the pioneering experimental results and implications for experiments in the single photon regime."

"This course-based text revisits classic concepts in nonlinear circuit theory from a very much introductory point of view: the presentation is completely self-contained and does not assume any prior knowledge of circuit theory. It is simply assumed that readers have taken a first-year undergraduate course in differential and integral calculus, along with an elementary physics course in classical mechanics and electrodynamics.Further, it discusses topics not typically found in standard textbooks, such as nonlinear operational amplifier circuits, nonlinear chaotic circuits and memristor networks. Each chapter includes a set of illustrative and worked examples, along with end-of-chapter exercises and lab exercises using the QUCS open-source circuit simulator. Solutions and other material are provided on the YouTube channel created for this book by the authors."

"Perhatian akademisi maupun peneliti yang mempelajari sistem ekonomi dan keuangan terutama untuk tujuan prediksi mulai tertuju pada topik chaos. Pencarian struktur chaos dalam sistem ekonomi dan keuangan menjadi penelitian menarik akhir-akhir ini. Adanya chaos dalam pasar keuangan merupakan pertanyaan panting karena dapat menjadi titik awal pemahaman perilaku sistem ekonomi dan keuangan yang belum terpecahkan dengan berbagai teori dan asumsi.Beberapa bukti menyarankan return saham terbentuk dad proses deterministic nonlinear (chaos). Studi empiris lainnya membuktikan nonlinearity baik deterministic maupun stochastic dalam financial time series. Beberapa penelitian memberikan bukti empiris adanya chaos dalam capital market index time series. Temuan tersebut merupakan tantangan bagi berbagai teori di bidang ekonomi dan keuangan seperti teori pasar efisien dan menjadi pertanyaan bagi penelitian yang berdasarkan asumsi statistik standar: independence (random) dan normalitas. Sistem low dimensional deterministic chaos memungkinkan penggunaan nonlinear dynamics untuk prediksi.Penelitian ini mempelajari adanya bukti empiris keberadaan chaos dalam pasar keuangan dengan pengujian yang mencari low dimensional chaos pada indeks dan beberapa saham individual pada pasar modal di Indonesia. Menggunakan perangkat pengujian BDS statistic, RJS analysis, Correlation Dimension dan Lyapunov Exponent, tesis ini mencoba mendeteksi adanya struktur chaos di Bursa Efek Jakarta. BDS statistic merupakan pengujian nonlinearity untuk mendeteksi deviasi hipotesa HD. RJS analysis diterapkan untuk uji persistensi atau long memory. Penerapan Correlation dimension dari Grassberger dan Procaccia untuk pengujian self similarity yang merupakan karakteristik chaos. Untuk menguji sensitive dependence on initial condition yang merupakan karakteristik chaos lainnya diterapkan Lyapunov exponent dad Wolf. Untuk mengatasi noise dalam data diterapkan filter proses stochastic dan filter simple noise reduction.Diperlukan range titik data yang panjang dalam pencarian struktur chaos. Maka diamati harga dan return saham harian, mingguan dan bulanan sampai akhir Nopember 2003 pads indeks IHSG sejak awal Januari 1988 dan 11 emiten BATA, DLTA, GDYR, JIHD, MERK, MLBI, PGIN, SCCO, SHDA, SMCB, SQBI sejak awal Januari 1989. Emiten yang dipilih adalah yang telah go public sebelum Januari 1989 dan masih terdaftar pads Nopember 2003.Hasil penelitian membukrtikan adanya nonlinearity, persistensillong memory dan low dimensional chaos pada IHSG dan beberapa emiten. Tetapi masalah noise dan temporal correlation belum dapat teratasi sepenuhnya karena keterbatasan jumlah titik data.

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Researchers start to turn their attention to a new and interesting topic, chaos. The possibility of chaos structure in the economic and financial system is becoming an important question, as it can be a starting point to understand the behaviour of the system. Recent evidences suggest that returns are formed by deterministic non-linear process or chaos. Empirical studies prove the existence of deterministic as well as stochastic non-linear in financial time series. Researchers provide empirical evidences of the presence of chaos in capital markets index. These findings possess new challenges for the prevailing Economic and Financial theories, and a question to researches that are based on statistical standard assumptions. A low dimensional deterministic chaos system opens the possibility to use non-linear dynamics for prediction or forecasting.

This research thesis seeks empirical evidence of the existence of chaos - low dimensional chaos - in financial market by testing individual stocks and index of the Indonesia 's Capital Market. By using BDS statistic to test non-linearity, RJS analysis for persistence (long memory) testing, Correlation dimension of Grassberger and Procaccia for self similarity testing, and Lyapunov exponent of Wolf to test sensitive dependence on initial condition, this study attempts to detect chaos in Jakarta Stock Exchange. Stochastic process filtering and simple noise reduction filtering are applied to handle noise in data set.

The observations are on the JSKIndex from January 1988 to November 2003 and on stocks prices & returns of eleven-selected listing companies from January 1989 to November 2003, which are sampled daily, weekly, and monthly. These companies have listed before January 1989 and were still listing on November 2003.

The result shows that non-linearity, persistence/long memory, and low dimensional chaos do exist on the Jakarta Stocks Exchange Index and in some selected listing companies."

"Nonlinear Dynamics, Volume 1: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics, 2018, the first volume of nine from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Nonlinear Dynamics, including papers on; Nonlinear System Identification, Nonlinear Modeling & Simulation, Nonlinear Reduced-order Modeling, Nonlinearity in PracticeNonlinearity in Aerospace Systems, Nonlinearity in Multi-Physics Systems, Nonlinear Modes and Modal Interactions, and Experimental Nonlinear Dynamics."

"This book presents the latest algorithmic developments in the cell-mapping method for the global analysis of nonlinear dynamic systems, global solutions for multi-objective optimization problems, and global solutions for zeros of complex algebraic equations. It also discusses related engineering and scientific applications, including the nonlinear design of structures for better vibration resistance and reliability; multi-objective, structural-acoustic design for sound abatement; optimal multi-objective design of airfoils for better lift; and optimal multi-objective design of linear and nonlinear controls with or without time delay.The first book on the subject to include extensive Matlab and C++ codes, it presents various implementation algorithms of the cell-mapping method, enabling readers to understand how the method works and its programming aspects. A link to the codes on the Springer website will be provided to the readers. "