Miracle-dz/UniFAR-FTUs huggingface dataset:
Intelligent Monitoring and Maintenance Technology for Next-Generation Power Electronic Systems

Next-generation power converters are expected to be reduced in size, weight, and cost while providing highly reliable operation over an extended lifetime with minimal ecological footprint. This work investigates how intelligent monitoring and maintenance technologies (IMMs) play a key role in realizing these typically conflicting objectives. It uniquely analyzes the economic and ecological potential, i.e., the increased average operational lifetime of converters, which can be realized via intelligent maintenance using extracted state-of-health data. Consequently, newest monitoring and maintenance technologies that address thermally induced stress and strain in power modules are discussed and categorized regarding their level of complexity and cost of implementation. This facilitates finding the necessary implementation effort and cost to achieve the defined reliability and lifetime requirements of specific applications. Finally, this work reviews the impact of artificial intelligence and cloud technologies on increasing the effectiveness of maintenance technology. Both technologies reveal a path to new business opportunities, such as “power-as-a-service,” and have the potential to transform the “hardware-oriented” power converter industry as we know it into a “data-driven” industry.
Determination of Mode I, Mode II and mixed mode stress intensity factors using automated polariscopes

Two automated polariscopes have been developed and are briefly described. One uses the method of phase stepping while the other uses the technique of spectral contents analysis. The use of either instrument results in full field images of the isochromatic parameter comprising of 256 by 256 pixels. The images from both automated photoelastic systems were modified for the analysis of cracks by removing data in the region directly around the crack tip and around the edge of the crack. This was necessary to minimise interference from the crack during processing of the data and to ensure that data is not processed from the near crack tip region which is susceptible to plasticity and notch effects. Data from the singularity dominated zone were input to an algorithm, developed separately, to calculate the stress intensity factors. The method uses an adapted form of Sanford and Dally's Multiple-Point Over Deterministic Method in which Fourier analysis is used to solve the stress field equations. Various crack geometries involving a range of Mode I, Mode II and mixed-mode stress intensity factors were analysed using the polariscopes. Comparison of the resulting stress intensity factors with analytical values showed good agreement.
Alternative Motives to File for Patents: Profiting from Pendency and Publication

Many patent applications lapse before they are reviewed by patent examiners. In this paper we analyze how even a lapsed patent application yields benefits to the applicant. We argue that these benefits are attributable to pendency and publication of patent applications. Based on an analysis of all direct first filings at the German patent office between 1986 and 2000 we find that more than 20% of all applications are left pending for the maximum of seven years before examination is requested or the application is deemed to be withdrawn. Our findings, which are supported by 25 interviews with inventors, indicate that firms keep patents pending in order to gain time for evaluating if an exclusion right is worth its cost and to create insecurity for competitors. Further 2% of all applications could turn out to have defensive publishing as their sole purpose, that is, the publication of inventions with the purpose of creating prior art. In this way, firms secure freedom to operate (FTO), which is a central precondition for appropriating profits from own-used inventions. This finding gives an indication that, for all other applications, the share of their value attributable to creating FTO might be considerable.
Energy efficient RF communication systems for wireless microsensors

Emerging distributed wireless microsensor networks will enable the reliable and fault tolerant monitoring of the environment. Microsensors are required to operate for years from a small energy source while maintaining a reliable communication link to the base station. In order to reduce the energy consumption of the sensor network, two aspects of the system design hierarchy are explored: design of the communication protocol and implementation of the RF transmitter. In the first part of the thesis, energy efficient communication protocols for a coordinated static sensor network are proposed. A detailed communication energy model, obtained from measurements, is introduced that incorporates the non-ideal behavior of the physical layer electronics. This includes the frequency errors and start-up energy costs of the radio, which dominate energy consumption for short packet, low duty cycle communication. Using this model, various communication protocols are proposed from an energy perspective, such as MAC protocols, bandwidth allocation methods and modulation schemes. In the second part of the thesis, design methodologies for an energy efficient transmitter are presented for a low power, fast start-up and high data rate radio. The transmitter is based on a Σ-∆ fractional-N synthesizer that exploits trade-offs between the analog and digital components to reduce the power consumption. The transmitter employs closed loop direct VCO modulation for high data rate FSK modulation and a variable loop bandwidth technique to achieve fast start-up time. A prototype transmitter that demonstrates these techniques is implemented using 0. 25μm CMOS. The test chip achieves 20μs start-up time with an effective data rate of 2.5Mbps while consuming 22mW. Thesis Supervisor: Anantha Chandrakasan Title: Associate Professor of Electrical Engineering
PLANiTS: A User??s Guide for the Prototype

This paper presents a simple prototype to demonstrate the key functions of PLANiTS (Planning and Analysis for Integration for Intelligent Transportation Systems). The prototype has a planning vector that allows users to enter and edit transportation actions, performance measures and environmental descriptors. This guide demonstrates how users specify each of these elements in terms of temporal, spatial and user dimensions and analyze the planning vector with models and case-based reasoning. During the process of planning vector specification and analysis, users at different locations can communicate by sending and receiving messages and sharing the planning vector.
Review for "Co‐targeting of miR‐126‐3p and miR‐221‐3p inhibits PIK3R2 and PTEN, reducing lung cancer growth and metastasis by blocking AKT and CXCR4 signaling"

Lung cancer is the leading cause of cancer-related death worldwide. Late diagnosis and metastatic dissemination contribute to its low survival rate. Since microRNA (miRNA) deregulation triggers lung carcinogenesis, miRNAs might represent an interesting therapeutic tool for lung cancer management. We identified seven miRNAs, including miR-126-3p and miR-221-3p, that are deregulated in tumours compared with normal tissues in a series of 38 non-small-cell lung cancer patients. A negative correlation between these two miRNAs was associated with poor patient survival. Concomitant miR-126-3p replacement and miR-221-3p inhibition, but not modulation of either miRNA alone, reduced lung cancer cell viability by inhibiting AKT signalling. PIK3R2 and PTEN were validated as direct targets of miR-126-3p and miR-221-3p, respectively. Simultaneous miRNA modulation reduced metastatic dissemination of lung cancer cells both in vitro and in vivo through CXCR4 inhibition. Systemic delivery of a combination of miR-126-3p mimic and miR-221-3p inhibitor encapsulated in lipid nanoparticles reduced lung cancer patient-derived xenograft growth through blockade of the PIK3R2–AKT pathway. Our findings reveal that co-targeting miR-126-3p and miR-221-3p to hamper both tumour growth and metastasis could be a new therapeutic approach for lung cancer. patients). Survival curves were estimated using the Kaplan–Meier method and were compared by the log-rank test. The Spearman correlation coefficient was also calculated. Statistical analyses were performed using GraphPad Prism 5 software. The results are presented as the mean ± standard errors of the mean (S.E.M.) values for quantitative data. Statistically significant differences were determined with Student t test when
Band Separation and Efficiency Optimization in Linear-Assisted Switching Power Amplifiers

Linear-assisted switching power amplifiers are based on combinations of switching converters (for high efficiency) and linear amplifiers (for high-speed, wide bandwidth responses) in applications such as envelope tracking for RF power amplifiers in polar modulation architectures, or audio amplifiers. This paper describes an approach to band separation and filter design to maximize the system efficiency and achieve near-ideal, wide-bandwidth responses. An experimental prototype is described, including a synchronous buck converter in combination with a class-AB linear amplifier. Experimental results for square wave and rectified sinusoid input signals demonstrate high bandwidth and high efficiency of the linear-assisted switching power amplifiers with optimized band separation.
THE "IMPAC" COMPUTER PROGRAM FOR ACCIDENT RECONSTRUCTION

The computer program "IMPAC" (Impact Momentum of a Planar Angled Collision) was developed for use in accident reconstruction to study the impact phase of a collision. It may be used for vehicle to vehicle or vehicle to fixed object impacts. Collisions are modeled as a vector impulse in two-dimensions taking place at a specified point in each two-dimensional vehicle. A common velocity is reached at this point for the inelastic collision with complete lockup. An optional condition is available to study sideswipe type collisions in which the colliding points are permitted to slide relative to each other at a prescribed speed along a defined plane of slip. The program has been validated by comparison with the data from 16 staged crash tests conducted by the NHTSA.
A dynamic bivariate Poisson model for analysing and forecasting match results in the English Premier League

We develop a statistical model for the analysis and forecasting of football match results which assumes a bivariate Poisson distribution with intensity coefficients that change stochastically over time. The dynamic model is a novelty in the statistical time series analysis of match results in team sports. Our treatment is based on state space and importance sampling methods which are computationally efficient. The out‐of‐sample performance of our methodology is verified in a betting strategy that is applied to the match outcomes from the 2010–2011 and 2011–2012 seasons of the English football Premier League. We show that our statistical modelling framework can produce a significant positive return over the bookmaker's odds.
Microdynamics and thermal snap response of deployable space structures

Due to the size constraints imposed by the payload bays of carrier spacecraft, future precision space structures (e.g. interferometric telescopes) will undoubtedly require some form of on-orbit deployment mechanism, including joints or hinges which will introduce nonlinearity to the structure. Results are presented from a two-part experimental investigation of the microdynamic response of nonlinear structures, to both mechanical and thermal excitation sources. In the first experiment, the dynamic response of a deployable truss at sub-microstrain levels of vibration is characterized in terms of modal parameters. The test article is subjected to steppedsine sweeps through its fundamental flexible modes over a range of excitation amplitudes. Highsensitivity piezoceramic strain sensors are used in conjunction with a lock-in amplifier to measure the truss response from tens of microstrain down to one nanostrain. The natural frequency and damping ratio are computed from the frequency response functions, using a circle fit method. Results show that the values of the modal parameters are strain-dependent at high response amplitudes, and strain-independent at low amplitudes. It is inferred that, at microdynamic levels of excitation, the internal loads needed to overcome the joint friction are not attained. The nonlinear mechanisms in the structure are thus not activated, resulting in a linear truss response. In the second experiment, the phenomenon of thermal snap, or creak, is investigated. Thermal snap is a disturbance which occurs when thermally-induced stress in a statically indeterminate structure is suddenly released via a slip internal to a joint or other frictional mechanism. A representative deployable truss is suspended in a thermal chamber, where its temperature is cycled between -30°C and 50°C, in order to determine whether thermal snap occurs in such a structure. High-bandwidth accelerometers distributed across the truss are used as the primary sensors for detecting structural events. Thermal snaps are found to occur during the thermal transients, before steady-state is achieved throughout the truss. The truss response to the impulsive and broadband disturbances is characterized in both the time and frequency domains. The transient response exhibits telltale signs of structural behavior, including multi-mode or dominant-mode excitation, and reasonable modal damping in the time decay. Thesis Supervisor: Edward F. Crawley Title: Professor of Aeronautics and Astronautics
Get Certified: A Guide to Wireless Communication Engineering Technologies

The Institute of Electrical and Electronics Engineers (IEEE) Communications Society designed the IEEE wireless communication engineering technologies (WCET) certification program to address the wireless industrys growing need for communications professionals with practical problem-solving skills in real-world situations. Individuals who achieve this prestigious certification are recognized as possessing the required knowledge, skill, and abilities to meet wireless challenges in various industry, business, corporate, and organizational settings. Presenting contributions from 50 wireless communications experts from all corners of the world, Get Certified: A Guide to Wireless Communication Engineering Technologies provides an authoritative review of the seven areas of expertise covered on WCET exam. It supplies cutting-edge coverage of the broad range of topics related to wireless communications to facilitate the technical competency required to achieve certification. The text outlines industry agreements, standards, policies, and regulations including licenses and permits, health and safety, and compliance. With coverage ranging from basic concepts to research-grade material and future directions, the book provides a general overview of the evolution of wireless technologies, their impact on the profession, and common professional best practices. The books well-structured presentation along with suggestions for further information and study, make it an indispensible guide for attaining WCET certification and a comprehensive source of reference for wireless professionals to keep pace with ever-evolving technology and standards in the field.
Real‐time monitoring system using RGB‐infrared in a vehicle black box

Red, green, and blue (RGB)‐infrared technology for imaging systems is developing in many research areas including surgery and monitoring systems. This article proposes a driver fatigue monitoring system that detects the face and eye regions (especially the pupil area) of the driver and measures the opened–closed eye status using RGB/infrared cameras. In the proposed system, the mean values of the eye region are used to enhance the accuracy of the extracted pupil area. The results show that the accuracy rate of classification for the eye opened/closed states is more than 93%. Therefore, we have confirmed that our proposed system is practical and accurate. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2452–2455, 2015
On the economic and technological forces shaping mobile transceiver architecture

The thesis examines the evolution of mobile transceiver architecture using the management framework pioneered by Carliss Baldwin and Kim Clark. The thesis begins with an introduction and an overview of the wireless communication value network. The author subsequently distills the salient aspects of the Baldwin and Clark management framework predicated on bottleneck analysis, modularity, and return on invested capital. The prominence of bottleneck analysis motivates a technical chapter that summarizes the bottlenecks relevant to all wireless communication systems, namely data rate, error rate, and battery life. A brief chapter discussing the dominant wireless communication network architecture, TDMA and CDMA, corroborates the bottleneck analysis and effectively assigns the error rate and battery life bottlenecks to the handset ODM and supplier layers of the value network. With a clear vision of the competitive bottlenecks, the evolution of transceiver architecture is presented in the context of the aforementioned management framework. Through this analysis, design power is shown to have passed from handset ODMs to integrated circuit suppliers. A noteworthy byproduct of the analysis is the genesis of the bottleneck tree whereby new layers of bottlenecks are emergent upon a firm's selection of a particular design architecture that targets the strategic bottleneck layer. Finally, the thesis is concluded with a summary of the ground covered and the author's opinions of how the architecture may yet evolve and the future nature of the competitive landscape. Thesis Supervisor: John M. Grace Industry Co-Director, System Design and Management Program Table of
Biogenic Amines on Food Safety

Today, food safety and quality are some of the main concerns of consumer and health agencies around the world. Our current lifestyle and market globalization have led to an increase in the number of people affected by food poisoning. Foodborne illness and food poisoning have different origins (bacteria, virus, parasites, mold, contaminants, etc.), and some cases of food poisoning can be traced back to chemical and natural toxins. One of the toxins targeted by the Food and Drug Administration (FDA) and European Food Safety Authority (EFSA) is the biogenic amine histamine. Biogenic amines (BAs) in food constitute a potential public health concern due to their physiological and toxicological effects. The consumption of foods containing high concentrations of biogenic amines has been associated with health hazards. In recent years there has been an increase in the number of food poisoning cases associated with BAs in food, mainly in relation to histamines in fish. We need to gain a better understanding of the origin of foodborne disease and how to control it if we expect to keep people from getting ill. Biogenic amines are found in varying concentrations in a wide range of foods (fish, cheese, meat, wine, beer, vegetables, etc.), and BA formation is influenced by different factors associated with the raw material making up food products, microorganisms, processing, and conservation conditions. Moreover, BAs are thermostable. Biogenic amines also play an important role as indicators of food quality and/or acceptability. Hence, BAs need to be controlled in order to ensure high levels of food quality and safety. All of these aspects will be addressed in this review.
A Supply Curve Of Conserved Energy For Automobiles

This report analyzes the cost effectiveness of automobile fuel economy technologies and the fuel savings that could result from their widespread use in the U.S. automobile fleet. Estimates are derived for the years 2000 and 2010. The technologies analyzed here do not exhaust the list of technologies that may be available for improving fuel economy. This is especially true for the 2010 estimates. If policies to push fuel economy to substantially higher than current levels are enacted, or if fuel prices rise substantially, many more new fuel economy technologies than analyzed here will surely be developed. This analysis thus represents the technological potential for a limited list of technologies that are relatively well understood. Supply curves of conserved energy are developed to illustrate the results of the analysis.
Semiconductor Devices for High-Speed Optoelectronics

Providing an all-inclusive treatment of electronic and optoelectronic devices used in high-speed optical communication systems, this book emphasizes circuit applications, advanced device design solutions, and noise in sources and receivers. Core topics covered include semiconductors and semiconductor optical properties, high-speed circuits and transistors, detectors, sources, and modulators. It discusses in detail both active devices (heterostructure field-effect and bipolar transistors) and passive components (lumped and distributed) for high-speed electronic integrated circuits. It also describes recent advances in high-speed devices for 40 Gbps systems. Introductory elements are provided, making the book open to readers without a specific background in optoelectronics, whilst end-of-chapter review questions and numerical problems enable readers to test their understanding and experiment with realistic data.
Beyond Design:

Beyond Design: The Synergy of Apparel Product Development, Fifth Edition maps the processes required to bring apparel products from concept to consumer. This full-color text takes students step-by-step through the decision-making involved in the pre-production processes of apparel product development including business, creative, technical, and production planning. Updated chapter content reflects evolving industry practice. It demonstrates how these processes must be coordinated to get the right product to market, when consumers want it, and at a price they are willing to pay in an increasingly digital environment. The text seeks to address how functional approaches vary depending on a business’s size and fashion focus. More global in scope, the fifth edition includes examples and case studies of multi-national companies and incorporates global nomenclature when it differs from the US industry. This new edition also advances its discussion of how new technologies continue to shorten the product development calendar. The book is written to help students anticipate the chaotic pace of change not only in fashion trends, but also in the fashion system itself. New to this Edition • Updated references and examples demonstrate how industry practice is changing to meet market demands • New case studies illustrate the impact of new technology and an evolving fashion system • An understanding of a circular economy expands upon how sustainability and social justice issues impact every function of product development, distribution, and consumption • The slow fashion/fast fashion dichotomy is considered as it impacts the fashion ecosystem • The issues of cultural appropriation and influencer culture are discussed Beyond Design STUDIO • Study smarter with self-quizzes featuring scored results and personalized study tips • Review concepts with flashcards of essential vocabulary Instructor Resources • Instructor's Guide provides suggestions for planning the course and using the text in the classroom, supplemental assignments, and lecture notes • PowerPoint® presentations include images from the book and provide a framework for lecture and discussion