Multimedia security and privacy protection in the internet of things: research developments and challenges

With the rapid growth of the internet of things (IoT), huge amounts of multimedia data are being generated from and/or exchanged through various IoT devices, systems and applications. The security and privacy of multimedia data have, however, emerged as key challenges that have the potential to impact the successful deployment of IoT devices in some data-sensitive applications. In this paper, we conduct a comprehensive survey on multimedia data security and privacy protection in the IoT. First, we classify multimedia data into different types and security levels according to application areas. Then, we analyse and discuss the existing multimedia data protection schemes in the IoT, including traditional techniques (e.g., cryptography and watermarking) and emerging technologies (e.g., blockchain and federated learning). Based on the detailed analysis on the research development of IoT-related multimedia security and privacy protection, we point out some open challenges and provide future research directions, aiming to advance the study in the relevant fields and assist researchers in gaining a deeper understanding of the state of the art on multimedia data protection in the IoT

Applied Metaheuristic Computing

For decades, Applied Metaheuristic Computing (AMC) has been a prevailing optimization technique for tackling perplexing engineering and business problems, such as scheduling, routing, ordering, bin packing, assignment, facility layout planning, among others. This is partly because the classic exact methods are constrained with prior assumptions, and partly due to the heuristics being problem-dependent and lacking generalization. AMC, on the contrary, guides the course of low-level heuristics to search beyond the local optimality, which impairs the capability of traditional computation methods. This topic series has collected quality papers proposing cutting-edge methodology and innovative applications which drive the advances of AMC

Recent Advances in Signal Processing

The signal processing task is a very critical issue in the majority of new technological inventions and challenges in a variety of applications in both science and engineering fields. Classical signal processing techniques have largely worked with mathematical models that are linear, local, stationary, and Gaussian. They have always favored closed-form tractability over real-world accuracy. These constraints were imposed by the lack of powerful computing tools. During the last few decades, signal processing theories, developments, and applications have matured rapidly and now include tools from many areas of mathematics, computer science, physics, and engineering. This book is targeted primarily toward both students and researchers who want to be exposed to a wide variety of signal processing techniques and algorithms. It includes 27 chapters that can be categorized into five different areas depending on the application at hand. These five categories are ordered to address image processing, speech processing, communication systems, time-series analysis, and educational packages respectively. The book has the advantage of providing a collection of applications that are completely independent and self-contained; thus, the interested reader can choose any chapter and skip to another without losing continuity

A computational geometric approach for an ensemble-based topological entropy calculation in two and three dimensions

From the stirring of dye in viscous fluids to the availability of essential nutrients spreading over the surface of a pond, nature is rife with examples of mixing in two-dimensional fluids. The long-time exponential growth rate of a thin filament of dye stretched by the fluid is a well-known proxy for the quality of mixing in two dimensions. This growth rate in turn gives a lower bound on the flow's topological entropy, a measure quantifying the complexity of chaotic dynamics. In the real-world study of mixing, topological entropy may be hard to compute; the velocity field may not be known or may be expensive to recover or approximate, thus limiting our knowledge of the governing system and underlying mechanics driving the mixing. Central to this study are two questions: \emph{How can stretching rates in two-dimensional planar flows best be computed using only trajectory data?}, and \emph{Can a method for computing stretching rates in higher dimensions from only trajectory data be developed?}. In this spirit, we introduce the Ensemble-based Topological Entropy Calculation (E-tec), a method to derive a lower-bound on topological entropy that requires only finite number of system trajectories, like those obtained from ocean drifters, and no detailed knowledge of the velocity field. E-tec is demonstrated to be computationally more efficient than other competing methods in two dimensions that accommodate trajectory data. This is accomplished by considering the evolution of a ``rubber band" wrapped around the data points and evolving with their trajectories. E-tec records the growth of this band as the collective motion of trajectories strike, deform, and stretch it. This exponential growth rate acts as a lower bound on the topological entropy. In this manuscript, I demonstrate convergence of E-tec's approximation with respect to both the number of trajectories (ensemble size) and the duration of trajectories in time. Driving the efficiency of E-tec in two dimensions is the use of computational geometry tools. Not only this, by computing stretching rates in this new computational geometry framework, I extend E-tec to three dimensions using two methods. First, I consider a two-dimensional rubber sheet stretched around a collection of points in a three-dimensional flow. Similar to the band-stretching component of two-dimensional E-tec, a three-dimensional triangulation is used to record the growth of the sheet as it is stretched and deformed by points evolving in time. Second, I calculate the growth rates of one-dimensional rubber strings as they are stretched by the edges of this dynamic, moving triangulation

Applied Methuerstic computing

For decades, Applied Metaheuristic Computing (AMC) has been a prevailing optimization technique for tackling perplexing engineering and business problems, such as scheduling, routing, ordering, bin packing, assignment, facility layout planning, among others. This is partly because the classic exact methods are constrained with prior assumptions, and partly due to the heuristics being problem-dependent and lacking generalization. AMC, on the contrary, guides the course of low-level heuristics to search beyond the local optimality, which impairs the capability of traditional computation methods. This topic series has collected quality papers proposing cutting-edge methodology and innovative applications which drive the advances of AMC

Reconstructing a National Silhouette: Avant-Garde Fashion and Perceptions of the Japanese Body

We present our identities, both wittingly and unwittingly, through the aesthetic choices we make in regards to our bodies. Adorning the body through fashion represents a genuine solution to a paradox of basic human needs: to express individuality and conform to a larger group or society. Three designers in particular, Rei Kawakubo, Issey Miyake and Yohji Yamamoto, fostered the recognition of Japanese fashion in Paris in the 1970s by shattering industry conventions. The success of these three designers has consequently tied their heritage to their work and its impact on the global stage. Using Rei Kawakubo as a case study, this research aims to understand how fashion can redefine society’s image of a clothed body’s race, gender or ability, while simultaneously delineating the political and social expectations of that body’s behavior. In other words, how has Kawakubo’s work shaped fashion’s view on the body, and is there something inherently Japanese to this reconstruction process? The paper investigates two specific collections, “Dress Meets Body, Body Meets Dress” (S/S 1997) and “Broken Bride” (A/W 2005). The dates of these collections offer two distinct snapshots of the industry’s willingness to accept Japanese fashion. Analysis of the clothes’ silhouettes, patterns, materials, construction and deviations from tradition underscores the capacity of fashion to create meaningful change in the embodiment of class, gender, race and disability

The social and technical development of toilet design

Thesis (Master)--Izmir Institute of Technology, Industrial Design, Izmir, 2004Includes bibliographical references (leaves: 75)Text in English; Abstract: Turkish and Englishxii, 129 leavesToilet is a critical link. The problem of body waste disposal is a subject that has always necessarily been the prime concern for humans living in society. Considering the evolution of the toilet is important for comprehending toilet design today and especially the deficiency of it. The idea of toilet is distinctly connected with the concept of cleanliness. The theory of bacteria and the rise of scientific thought gave rise to the concept of 'hygiene' and its appearance in daily life, which in turn altered the inside view of dwellings. Toilet is a vital part of this home system, distinctly related to human and environmental factors. Basically, the toilet is a machine for mixing faeces, urine, toilet paper, and water. This machine can be equipped with a number of accessories, but whatever its shape, in fact the WC is more than an object based on the idea of disposal of flushing away and hiding or diluting something we do not want. It is obvious that the disposal of waste can only be a part of 'toilet design'.In the history of the toilet, the main problem has remained the disposal of human waste at city level. This was assumed to be solved when the sewerage system was introduced. In fact, the world has yet to deal with environmental problems. Ecological sanitation offers a solution to toilets' share of pollution. Moreover, the addition to ecological conditions, it is important to design a toilet by thinking in a way regarding human psychological and physiological needs.For taking toilet design a step further, this research aims to reveal criteria to solve sanitation problems by focusing on the entire mechanism including, the toilet and toilet system, which should be considered and designed to serve all needs of cultures, ages, differences as a part of everyday life, to be adopted in varies occasions adding to global needs and realities.especially to reach 'the ideal toilet'