Miracle-dz/UniFAR-FTUs huggingface dataset:
Inverted L-slot triple-band antenna with defected ground structure for WLAN and WiMAX applications

To incorporate two different communication standards in a single device, a compact triple-band antenna is proposed in this paper. The proposed antenna is formed by etching an inverted L-shaped slot on the patch with defected ground structure. The antenna is targeted to excite three separate bands first from 2.39–2.51, second from 3.15–3.91, and third from 4.91–6.08 GHz that covers entire Wireless Local Area Network (WLAN) (2.4/5.2/5.8 GHz) and Worldwide Interoperability for Microwave Access (WiMAX) (2.5/3.5/5.5) bands. Thus, the proposed antenna provides feasibility to integrate WLAN and WiMAX communication standards in a single device with good radiation pattern quality. Furthermore, a prototype of the proposed antenna fabricated and measured to validate the design, shows a good agreement between simulated and measured results. The simulation and measurement results show that the designed antenna is capable of operating over the 2.39–2.51 GHz, 3.15–3.91 GHz, and 4.91–6.08 GHz frequency bands while rejecting frequency ranges between these three bands. The proposed antenna offers a compact size of 20 × 30 mm2 as compared with earlier reported papers.
A survey on localization techniques for wireless networks

Abstract Wireless networks have displaced the well established and widely deployed wired communication networks of the past. Tetherless access and new services offered to mobile users contribute to the popularity of these networks. Thus users have access from many locations and can roam ubiquitously. The knowledge of the physical location of mobile user devices, such as phones, laptops and PDAs, is important in several applications such as network planning, location based services, law enforcement and for improving network performance. A device's location is usually estimated by monitoring a distance dependent parameter such as wireless signal strength from a base station whose location is known. In practical deployments, signal strength varies with time and its relationship to distance is not well defined. This makes location estimation difficult. Many location estimation or localization schemes have been proposed for networks adopting a variety of wireless technologies. This paper reviews a broad class of localization schemes that are differentiated by the fundamental techniques adopted for distance estimation, indoor vs. outdoor environments, relative cost and accuracy of the resulting estimates and ease of deployment. The paper exposes many challenges that remain and elaborates on several future research problems that need to be solved.
Analysis for the Syngas Composition of Gasifier

A simple and convenient model to analyze the composition of the syngas has been implemented. We collect thermodynamic properties data from JANAF tables and Turns’ book. By regression analysis the Gibb’s energy functions of temperature were got. Through these functions, the equilibrium constants as functions of temperature can be deduced for the related chemical reaction in gasification process. With the equilibrium constants, the model to calculate the equilibrium composition for pure carbon gasification has been established. The model was improved from considering only isothermal reaction to including reaction heat balance and then finally with fully energy balance consideration. Since the model has been implemented on general software Excel, it will be very easy for users to apply in further study. Finally, we show how precise the estimation could be by doing comparison with early study and utilize this tool to analyze the heat balance for a specific IGCC cogeneration power plant.
Coherence analysis of EEG via multichannel AR modeling

The multichannel autoregressive model and the periodogram approach are used to determine coherence and phase measures between the electrical activity in two distinct brain structures of the rat namely, the subfields CA1 and dentate gyrus in the hippocampal formation, during the vigilance states of quiet waking (QW), slow-wave sleep (SWS), and rapid-eye-movement (REM) sleep. Using both periodogram and multichannel autoregressive modeling techniques, high coherence and consistent phase differences were found to exist within the theta range of frequencies (4-11 Hz) only during REM sleep. <<ETX>>
Attitude determination and control system for EyasSAT for Hardware In the Loop application

Attitude Determination and Control System for EyasSAT for Hardware In the Loop Application C.J. Groenewald Department of Electric and Electronic Engineering Thesis: MScEng (E&E) April 2014 An Attitude Determination and Control System (ADCS) demonstrator and testing platform was required for satellite engineering students. The ADCS demonstrator and testing platform will allow students to develop insight into the concepts and challenges of ADCS design and implementation. The existing model nano-satellite EyasSAT was used as a design platform for a new ADCS demonstrator. A new ADCS module (ADCS_V2) was developed to replace the existing EyasSAT ADCS module. The new module allows for three-axis ADCS and the demonstration of the ADCS on an air bearing platform. The air bearing allows full freedom of movement for yaw rotations with limited pitch and roll rotations. The actuators and sensors required for the ADCS were developed and integrated into EyasSAT. In addition a new PCB was designed to form the ADCS_V2 module. Attitude determination algorithms and attitude control algorithms were implemented and tested using MATLAB Simulink simulations. These algorithms were then implemented on the ADCS_V2 module. The ADCS was tested using Hardware In the Loop (HIL) techniques and an air bearing. The yaw attitude of EyasSAT could be controlled within 0.4 degrees accuracy with all the sensors active. In order to stabilize the air bearing platform, the pitch and roll angles were rate controlled. The pitch and roll rates were damped to within 6 mrad/s. ii Stellenbosch University http://scholar.sun.ac.za
52.3: Development of Back‐channel‐etched TFT Using C‐Axis Aligned Crystalline In‐Ga‐Zn‐Oxide

We have fabricated a back‐channel‐etched TFT using the CAAC‐IGZO film that we developed. As a factor of success in manufacturing stable back‐channel‐etched TFTs, it is considered that CAAC‐IGZO has a strong structure because of its crystallinity. For verification, we have compared the cohesive energy of c‐IGZO and that of a‐IGZO.
In Silico and In Vitro Synergistic Anticancer Effects of The Metformin-Lapatinib Combination By The Regulation of Apoptotic Biomarkers Expression In SKBR3 Cells

We examined the effect of Metformin (MET) on Lapatinib (LAP)-induced apoptosis in SK-BR3 cells. The cell viability and cell death were measured by MTT assay and Annexin V-FITC/PIstaining, respectively. The mRNA expression of Bax, Bcl2, and P21 was determined by real-time PCR. The activity of caspase 3 and 9 was measured using an ELISA kit. The MET-LAP combination index (CI) was calculated using CompuSyn software. The molecular docking studies of LAP with Akt, AMPK, and HER2 were performed using Auto Dock 4.2. 5.1. The strongest synergistic apoptotic death [combination index (CI) = 0.51] was obvious in MET 100 mM plus LAP 100 nM. The MET-LAP combination causes a more powerful apoptotic death (46%) compared to LAP 100 nM individually. The combination could significantly increase the expression of Bax and P21, as well as the activity of caspase 3 and 9, but decreased the expression of Bcl2. Moreover, the combination could significantly increase the level of AMPK in LAP 100 nM plus MET 30 mM and decreased the level of Akt in LAP 100 nM plus MET 40 mM. Molecular docking studies showed that LAP interacts with the active site amino acids of Akt, AMPK, and HER2 by hydrogen and hydrophobic interactions. MET-LAP combination induces more extensive apoptotic death than either drug alone in SKBR3 cells. MET-LAP combination may be considered as a valuable therapeutic intervention in breast cancer patients. However, further in-vivo studies are needed to assess the MET-LAP combination's practical value for induction of apoptosis and an anti-cancer drug.
Ted Shawn

This book is the first critical biography of Ted Shawn (1891–1972), the self-proclaimed “Father of American Dance. ” Based on extensive archival research, it offers an in-depth examination of Shawn’s pioneering role in the formation of Denishawn (the first American modern dance company and school), Ted Shawn and His Men Dancers (the first all-male dance company), and Jacob’s Pillow (the internationally renowned dance festival and school located in the Berkshire Hills of Massachusetts). For many years and with great frustration, Shawn attempted to tell the story of his life’s work in terms of its social and artistic value, but struggled, owing to the fact that he was homosexual, something known only within his inner circle of friends. Though Shawn remained closeted, he scrupulously archived his journals, correspondence, programs, photographs, and motion pictures of his dances, anticipating that the full significance of his life, writing, and dances would reveal itself in time. By exploring these materials alongside Shawn’s relationship with contemporary thinkers who were leading a radical movement to depathologize homosexuality, such as the British eugenicist Havelock Ellis, writer Lucien Price, and sexologist Alfred C. Kinsey, this book tells the untold story of how Shawn’s homosexuality informed his extensive body of writings and choreography and, by extension, the history of dance in America.
Progressive Failure of Lined Waste Impoundments

Progressive failure can occur along geosynthetic interfaces in lined waste landfills when peak strengths are greater than residual strengths. A displacement-softening formulation for geosynthetic interfaces was used in finite-element analyses of lined waste impoundments to evaluate the significance of progressive failure effects. First, the Kettleman Hills landfill was analyzed, and good agreement was found between the calculated and observed failure heights. Next, parametric analyses of municipal solid waste landfills were performed. Progressive failure was significant in all cases. Limit equilibrium analyses were also performed, and recommendations are provided for incorporating progressive failure effects in limit equilibrium analyses of municipal solid waste landfills.
Automated Approach to Negotiation of BOT Contracts

Build, operate, and transfer (BOT) projects have become of increasing interest over the last few years. The BOT model entails a concession company providing the finance, design, construction, operation and maintenance of an infrastructure project for a specified concession period. This paper deals with the negotiation of financial and contractual parameters associated with a BOT project before it is awarded to the promoter. It describes the development of an automated mechanism as an alternative approach in expediting the negotiation over a suitable pricing structure for the BOT project. The mechanism was developed by incorporating spreadsheet data into multiple linear regression models to formulate the prediction equations using the tariff, concession period, and rate of return as the variables. This approach reduces the bulk of urgent recomputations of the project cash flows during the final negotiation that would otherwise entail the use of considerable resources. The mechanisms could therefore be used as enhanced tools for dynamic negotiation between the government and the promoter for an acceptable level of tariff structure; concession period and rate of return on the promoter’s investments; and for balancing the risk/return profiles of both parties.
Control system design automation with robust tracking thumbprint performance using a multiobjective evolutionary algorithm

This paper develops a multiobjective evolutionary based methodology for control system design automation of robust tracking thumbprint performances in QFT. Unlike conventional two-stage design approach, the technique is capable of evolving both nominal controller and pre-filter concurrently without the need of QFT bound computation and manual loop-shaping procedure. It is shown that the method can easily accommodate practical soft/hard constraints and allows engineers to examine the different design trade-offs. Validation upon a benchmark QFT design problem illustrates the usefulness of the proposed methodology.
North American hazardous locations: the future

The approach to the classification of hazardous locations, and the design and installation of electrical equipment used in these locations, is quite different in North America to that of a number of other developed nations. For a variety of reasons, many equipment users in the United States and Canada desire to have the ability to choose between the existing Class, and Division rated equipment, and wiring methods and/or the international rated equipment and wiring methods, in their facilities. The addition of Article 505 to the 1996 National Electrical Code (NEC), and similar changes in process to the Canadian Electrical Code (CEC) to introduce the International Electrotechnical Commission's (IEC) system of area classification is the result of years of effort. Given the dissimilarity between Canada and the United States' electrical codes and standards writing processes, and the attitude of each group concerning the integration of the new system, there will be differences between the two countries for some period of time. The authors review the differences in the processes, provide a comparison of the systems and conclude with a look to the future after the full impact of the new system in each code is realized.
Concepts for evaluation of image quality in digital radiology

Concepts for digital image evaluation are presented for Computed Radiography (CR) and Digital Detector Arrays (DDAs) used for weld inspection. The precise DDA calibration yields an extra ordinary increase of contrast sensitivity up to 10 times in relation to film radiography. Restrictions in spatial resolution caused by pixel size of the DDA are compensated by increased contrast sensitivity. First CR standards were published in 2005 to support the application of phosphor imaging plates in lieu of X-ray film, but they need already a revision based on experiences reported by many users. One of the key concepts is the usage of signal-to-noise (SNR) measurements as equivalent to the optical density of film and film system class. The contrast sensitivity, measured by IQI visibility, depends on three essential parameters: The basic spatial resolution (SRb) of the radiographic image, the achieved signal-to-noise ratio (SNR) and the specific contrast (μeff - effective attenuation coefficient). Knowing these 3 par.
Influence of Blade Thickness on Unsteady Propeller Forces

Unsteady CFD method based on realizable k-ε model is used for predicting unsteady forces of propeller working in non-uniform inflow. CFD method was firstly validated by cases of propeller P4118 in 3-cycle and 4-cycle inflow. The influence of the little difference between experiment and CFD flow field on propeller unsteady forces was estimated by 2D unsteady method which has been proved to be correct. The results of CFD agree well with experimental data. Then several propellers with different blade thickness are simulated, the results show that, as a whole, average thrust, torque and unsteady forces decrease slightly as blade thickness increases.
An exploration of flow experiences in professional jump jockeys

Research has explored the conditions influencing the occurrence of flow in horse racing. However, little is known about the elements characterising the state of flow in equine sports. This study sought to; (a) explore the conditions influencing the occurrence of flow; (b) explore the characteristics of flow; and (c) explore the connections between the conditions and characteristics of flow in jump jockeys. Ten professional jump jockeys (M age = 28.1; SD = 5.21) participated in semi-structured interviews exploring the occurrence of flow in National Hunt horse racing. Data was analysed through an alternating process between thematic and connecting analyses. Twelve facilitators, ten inhibitors and seven disruptors were identified as being influential to the occurrence of flow. Ten characteristics described the occurrence of flow in jump jockeys, of which the optimal interaction with the horse has not emerged previously. Synchronisation of horse and jockey during flow experiences was characterised by communicatory, physiological and locomotive features. Additionally, 35 links were exhibited between the conditions and characteristics of flow, through which confidence, concentration and the optimal interaction with the horse were most influential for the occurrence of flow. This study made two important contributions by characterising the experience of flow in horse racing and identifying the manner in which the facilitative factors influence the occurrence of flow in jump jockeys. Similar to recent studies, kinaesthetic and cognitive alterations were associated with jockey flow experiences Results are discussed in relation to previous research and recommendations for theoretical and research developments outlined.
Study on the Lateral Piezoelectric Actuator with Actuation Range Amplifying Structure

A novel piezoelectric micro-actuator with actuating range amplification structure has been proposed. This actuator is unique in that the leverage type amplification structure enables large actuating movement with low voltage. In case of general piezoelectric thin film actuator, applied voltage is low and almost zero power is consumed. Its switching time is very fast in comparison with electrostatic actuators and thermal actuators. However, the most drawback of piezoelectric actuator is short actuating range. A 100μm length PZT actuator can only make movement of 100. In this research, we suggest an actuator which can provide geometric amplification of the PZT strain displacement in lateral direction. The lateral piezoelectric MEMS actuator was fabricated and its actuating range was measured. The actuator shows maximum lateral displacement of 1. 1μm, and break-down-voltage of the thin film PZT actuator is above 16V.
CAD model-based inspection and visualisation for 3D non-destructive testing of complex aerostructures

When performing non-destructive testing of aerostructures with complex geometrical shapes and curved surfaces, two problems arise: one is generation of an appropriate sequence of 3D coordinates and orientations for the inspection probe to follow complex component contours; the other is interpretation and characterιsation of defects based on 2D NDT images. By utilising the information from CAD models, this paper presents a 3D NDT software package to aid planning of NDT data acquisition via 3D simulation, and to aid defect visualisation and measurement in 3D by superimposing 2D NDT images on their 3D CAD models. The particular noteworthy and unique characteristics of the software are (a) a versatile 3D CAD model editing tool for extraction of CAD features and construction of simplified CAD models; (b) 3D scanning simulation for automatic generation of probe coordinates and orientations with respect to curved component surfaces; (c) tools for aligning and projecting a 3D CAD model on to its 2D NDT image; and (d) texture mapping to project a NDT image on to its 3D CAD model surface. Using real aircraft components with their radiographic, ultrasonic and thermographic images as examples, the software is shown to offer a unique, versatile and powerful CAD-based 3D NDT environment for fast and reliable structure integrity assessment of complex aerostructures.
Development of IEC61850 Hardware Laboratory Platform for Substation Protection and Control integration

Reliable and efficient operation of substation equipment is of considerable importance to transmission and distribution networks. The paper explores the new emerging IEC61850 substation communication standard and presents an IEC61850 based laboratory platform that consists of real time digital simulator (RTDS), several embedded programmable interrupt controller (PIC) boards and a PC. The RTDS is used to simulate a substation suitable for the investigation of various monitoring, protection and control functions. Embedded microcomputer boards are used as intelligent electronic devices (IEDs) or relays to sample and control the substation equipment. The PC is used as the substation micro SCADA system having client/server communication software and human machine interface (HMI). It displays the status of the substation equipment graphically. An integrated application for monitoring the power quality in the substation is presented and discussed.
Reactive Power Optimization Analysis of 35KV Regional Power Grid Based on the Genetic Algorithm

As we know, the load of power grid keeps increasing in recent years, and the difference of power pink and trough is large. This situation causes the low efficiency of power consuming. In this paper, the integer coded genetic algorithm is used to carry on the reactive optimization of 35KV power gird, which includes operations of genetic algorithm, such as coding, selecting, crossing, and mutating. The genetic algorithm is illustrated in IEEE30 points system and the optimization of maximum operational mode, the results show that this method decreases the loss and ensure the qualified rate of voltages, realizing the optimization of the power gird.
Wireless chemical sensing schemes using environmentally sensitive hydrogels

Park, Jun Hyeong. Ph.D., Purdue University, May 2015. Wireless Chemical Sensing Schemes using Environmentally Sensitive Hydrogels. Major Professor: Babak Ziaie. In situ sensing of chemical parameters such as pH, glucose, enzymes, and other analytes is of immense importance in health care and environmental monitoring. There has been considerable research in this area using hydrogels as a chemo-mechanical transducer. Hydrogels are water-swollen polymers containing chemical groups that are sensitive to environmental stimuli. When there is a chemical change, e.g. alkali to acidic pH, hydrogel swells or shrinks. This reversible volume change can be coupled to capacitive, inductive or other sensing mechanisms. Despite many years of research, hydrogel-based sensors have not been of practical utility. This has been due to several reasons such as: 1) manipulation difficulties of hydrated gel and their integration with hard inorganic materials, 2) slow response of transducer due to diffusion limited sensing mechanism, 3) baseline and sensitivity drift, and 4) biofouling. In 2006, Ziaie’s group presented a wireless MEMS-based pH/glucose sensitive sensor using hydrogel. Despite successful demonstration for a proof of concept, the device had several shortcomings such as a complicated fabrication processes resulting in low yield, difficulty in snugfilling of a small cavity with hydrogel, and slow response time. The doctoral work presented here reports on several investigations undertaken to overcome the aforementioned shortcomings by developing novel, simple to fabricate, and inexpensive methods using 1) immobilized ferrogel (magnetic nanoparticles embedded in hydrogel) on top of an integrated flat coil, 2) hydrogel/polymeric magnet bilayer, and 3) microbubbles embedded hydrogel. The reversible swelling/shrinking of hydrogel results in 1) a change of inductance, which can be wirelessly monitored by standard phase
Simulation of a Stäubli TX90 Robot during Milling Using SimMechanics

This paper proposes a simulation of a Stäubli TX90 robot based on SimMechanics Toolbox of Matlab. The goal is to predict the position and trajectory of its end-effector, with high reliability. The simulator takes into consideration loading, deformations, calibrated kinematic parameters, and all eventual sources of disturbance. An application to milling and a comparison between real and simulated data reveal the reliability and the accuracy of the simulator.