Miracle-dz/UniFAR-FTUs huggingface dataset:
Sparse deconvolution based on regularisation for echo correction in antenna measurement

Antenna measurement may be affected by multipath effects when it is carried out in a semi-anechoic chamber or when a fault in the chamber arises. In this study, a sparse deconvolution method is applied to identify clearly the direct and reflected contributions in the time response of the measurement chamber. It is possible to recover the distortion-less radiation pattern by simply removing the reflected wave. This method requires half the bandwidth of other methods. Some significant results are presented to show the accuracy of the proposed approach.
Patterns of conjunctival and scleral regeneration after intraoperative application of cyclosporin A solution in rabbits with steroid-induced glaucoma

Aim. In an in vivo experiment, to study the effect of local intraoperative application of 0.05% cyclosporin A solution on the conjunctival and scleral regeneration after surgery on the rabbit eyes with steroid-induced glaucoma. Materials and methods. At the first stage of the experiment, a model of steroid-induced glaucoma was reproduced for 29 male Californian rabbits by injecting 0.5 ml of a 0.4% solution of dexamethasone subconjunctivally in both eyes once a week for 3 months (12 subconjunctival injections for each rabbit). At the second stage of the experi -ment, after the development of steroid-induced glaucoma, the rabbits were divided into the main group, consisting of the subgroup “a” ( n = 8) and the subgroup “b” ( n = 8), and the comparison group ( n = 8). In all animals, a penetrating incision of the conjunctiva and a non-penetrating incision of the sclera of one of the eyes were performed.s. A hemostatic sponge impregnated with 0.05% cyclosporin А solution was applied to the intervention area in the main group, in the subgroup “a” – for 3 minutes, in the subgroup “b” – for 6 minutes. In the comparison group, the cytostatic was not used. Results. The use of 0.05% cyclosporin А solution led to a decrease in the infiltration of fibroblasts and inflamma tory cells in the area of surgical injury. On the 4th day after the surgery, cell density in the intervention area in the subgroup “a” with 3-minute application of cytostatic – antimetabolite solution was 2.7 times lower ( p = 0.043) than in the comparison group, while exceeding the values in the subgroup “b” by 3.2 times ( p = 0.036). The number of fibroblasts in the subgroups “a” and “b” was 3.6 ( p = 0.043) and 12.8 times ( p = 0.031) less than in the comparison group, and a shift in the cellular composition of the infiltrate towards the fibroblastic population occurred only on the 14th day after the surgery. Conclusion. Intraoperative application of 0.05% cyclosporin А solution significantly slows down the course of regeneration, reducing infiltrative inflammation in the intervention area, which prevents excessive scarring.
New ratio method for effective channel length and threshold voltage extraction in MOS transistors

A new 'ratio' method for effective channel length and threshold voltage extraction in MOS transistors is proposed. The method, which relies on the same function as that used in the well known shift and ratio procedure, enables the effective channel length and threshold voltage difference to be extracted from simple linear regression applied to a short versus long channel correlation plot of the function Y(V/sub g/)=I/sub d//spl radic/g/sub m/ (I/sub d/ being the drain current and g/sub m/ the transconductance). This method has successfully been applied to 0.18-0.1 /spl mu/m CMOS technologies.
Evaluating the Effect of Fatigue on Cognitive and Visual/Perceptual Performance at the Beginning and End of Each Shift in a 12-Hour Five-Day Rotating Workweek

The effect of cognitive and visual/perceptual fatigue on shift workers may not be the same for non-shift workers since alternating shifts create enormous disruptions to the circadian rhythms of the workers. The purpose of this study was to measure the effect of fatigue induced by alternating shift schedules on shift workers' cognitive and visual/perceptual performance at the beginning and end of each work shift during the workweek. The primary instrument used in this study was the Automated Performance Testing System (APTS), which is a human performance measuring system containing eight various cognitive and temporal factors tests. The findings suggested that cognitive performance at the beginning of the shift was significantly higher than at the end of the shift but similar degradations in visual/spatial performance were not found.
Advanced Methods to Develop Drip Emitters with New Channel Types

Because of their micro-scale and complex structure, the development cost of new drip emitters is high. To reduce the cost, some advanced technologies, such as computer-aided design (CAD), computational fluid dynamics (CFD), rapid prototyping (RP) and rapid tooling (RT) were used to establish a rapid method for emitter development. The emitter channel was designed using a three-dimensional parameterized CAD model. Then the flow within the channel was simulated using CFD, which provided visual results of pressure and velocity distributions. Moreover, the discharge and flow exponent of the emitter were also obtained from the CFD simulations. Verified by the simulation results, several types of emitters were fabricated using RP/RT without making an experimental steel mold or amplifying emitter models. Using these prototype emitters, the performance experiments of structural finalization were done directly. Results showed that the deviations between the measured and simulated discharges were less than 5%. Using a comprehensive analysis of the simulated and measured results, a steel mold for one of the emitters with optimum performance was manufactured. The measured performance of the plastic emitters fabricated using the mold was close to the results of the simulations and prototype tests, which indicating a successful steel mold for volume production. Taking the eddy-channel emitter developed here as an example, a comparative cost analysis showed that both the cost and time of emitter development were reduced by 50%.
Application of MSE-EEMD Method in Gear Fault Diagnosis

Focus on the nonlinear and non-stationary characteristics of gear box vibration signal, the method of gear fault diagnosis based on Ensemble Empirical Mode Decomposition (EEMD) and multiscale entropy (MSE) was proposed . The complicated signal can be decomposed into several stationary IMF components with reality meanings by EEMD which has the advantages of eliminating aliasing state of vibration signal, and the MSE can extract the fault feature from the signals effectively. The concepts of EEMD and MSE are introduced firstly, and then they are applied to measure the complexity of gearbox signals. Through the engineering application of the diagnosis on gear typical fault of different wearing degree demonstrated that the proposed method can extracting the fault feature of gear fault effectively and realize the gear fault diagnosis.
An EHL Analysis of an All-Metal Viscoelastic High-Pressure Seal

An EHL (elasto-hydrodynamic lubrication) analysis of an all-metal viscoelastic highpressure seal is presented. The fluid flow is assumed to be laminar and isothermal, and its inertial effect is neglected. Deformation of the cylinder and plunger is governed by Lame's formula for a thick-walled cylinder. The pressure-viscosity and pressure-density relationships of a working fluid are assumed to satisfy the Burus and Dowson-Higginson formulas, respectively. The leakage rate of the seal decreases almost exponentially with an increase in the working pressure, while its minimum film thickness can remain at about seventy percent of its nominal value at high working pressures. The radial stiffness increases significantly with an increase in the working pressure, i.e., stable operations of the seal can be expected.
Application of CIP Method for Strongly Nonlinear Marine Hydrodynamics

Abstract A CFD approach based on the CIP (Constrained Interpolation Profile) method has been developed for predicting strongly nonlinear marine hydrodynamics. The numerical model uses a Cartesian grid for numerical solution and applies the CIP method for the flow solver and the free-surface interface capturing. An efficient interface capturing method by using a conservative CIP scheme is applied to two-dimensional sloshing. For strongly nonlinear wave-body interactions, a Cartesian grid method, in which the body surface is approximated by distributing virtual particles on it, treats the boundary condition at the body surface. A three-dimensional numerical simulation on a ship moving in large waves is presented.
Engine video system with an infrared fiber optical image guide

The engine video system with the infrared fiber optical image guide is an optical equipment for the investigation of all kinds of periodic events in production engines, such as injection or combustion process in reciprocating engines etc. It is a reliable and easy-to-handle tool for research and development work avoiding significant alterations to the engine. This is possible by obtaining optical access to most parts of the engine via an infrared fiber optical image guide. On-line observation of various phenomena is realized by connecting a miniature infrared video CCD camera to the infrared fiber optical image guide. System features are suitable for diesel and gasoline engine, on-line observation and recording, system resolution better than 10 pl/mm. This system can be used to observe non-luminous phenomena such as fuel injection or cyclic movement of mechanical parts by the use of a high power xenon lamp that has the power 350 W guided by an infrared optical fiber bundle to the observed target.
Track Test Monitoring System Using a Multipurpose Experimental Train

This paper on a track test monitoring system is from the proceedings of the 12th International Conference on Computer System Design and Operation in Railways and Other Transit Systems, held in Beijing, China, in 2010. The authors outline a track measurement device that uses the inertial mid-chord offset method and a track-material monitoring device, both of which have been developed to monitor the railway track. They present the results of installing these devices on the multipurpose experimental train (called “MUETrain”) on conventional lines. The new track monitoring system was developed with the goal of reducing track patrol labor and maintenance costs, as well as to improve inspection quality. The MUETrain is a test train converted from the former Keihin-Tohoku line 209 series cars (Japan). Testing showed that the device obtained measurements to an accuracy of 1mm for altitude information in the vicinity of the rail up to 110 km/h. The authors conclude that eventually the on-board portion of the device should be made compact enough for efficient use on commercial cars.
29.1: Overview of Factors Affecting Lens Performance for 3D Displays

In response to the demand for high quality tunable lenses in 3‐D display applications, we discuss the effects of different design factors on liquid crystal based electro‐optic lens performance with LC modeling and lens modeling methods. In addition, a high quality LC lens is demonstrated, and measurement approaches are introduced to evaluate the performance in terms of particular metrics, and verify the modeling results.
A Multi-Agent Platform Design for Adaptive Networks of Intelligent Production Schedulers

Abstract The paper describes an approach of creating innovative knowledge-based multi-agent platform for the developing next-generation of intelligent schedulers for the top Internet services and sensor networks for manufacturing enterprises. As an example the implementation of this approach is described at small machinery manufacturing enterprise. These developments allow to increase service level for clients, reduce costs and delivery time, and improve scalability, performance and reliability of new generation of automated scheduling services.
Electrokinetic flow focusing and valveless switching integrated with electrokinetic instability for mixing enhancement

This study performs an experimental investigation into electrokinetically-driven flow phenomena in microfluidic chips. The study commences by investigating the electrokinetic focusing/valveless switching of multiple sample flows in an M × N microfluidic chip, where M is the number of sample streams and N is the number of outlet channels. The experimental results show that the sample flows can be electrokinetically pre-focused into narrow streams via sheath flows and then guided to the desired outlet ports by applying a simple voltage control model which specifies the intensity of the external electrical field to be applied to the inlet channels and the required potential conditions of the individual outlet channels, i.e. grounded or isolated. The study then investigates the electrokinetic instability phenomenon induced at the interfaces between the sample flows and the sheath flows by the application of an external electrical field of sufficient intensity. It is shown that inducing this instability phenomenon yields a significant improvement in the mixing performance within the microchannel. Finally, it is demonstrated that by applying a high electrical potential to the inlet channel and specifying appropriate potential conditions for the individual outlet channels, two sample streams can be directed to any one of the N outlet channels in order to carry out mixing via electrokinetic instability effects.
The customized mandible substitute based on rapid prototyping

Traditional standard bone substitutes cannot realize the individualized matching for the bones of different patients. In order to make a bone substitute match the shape of a patient's bone easily, a technology based on reverse engineering (RE) and rapid prototyping (RP) is put forward to design and fabricate a customized bone substitute. By RE, the customized bone substitute is designed according to the CT sectional pictures, and the customized localizer is designed to locate the customized bone substitute in the patient's body at the right position. A customized mandible substitute designed and fabricated by RE and RP has been put into clinical use and is discussed in detail. The results confirm that the advantage of RP in the field of bone restoration is that it can fabricate the customized bone substitute rapidly and accurately.
Cross-talk and noise issues in coherence multiplexed in-line Fabry-Perot etalon (ILFE) strain sensor

In this paper we have investigated the cross-talk and noise issues that arise in serial multiplexing of In-Line Fiber Etalon (ILFE) strain sensors using three different topologies. First, the broadband source is numerically modeled to preserve all the artifacts in the line structure. Second, the effect of beam expansion in the non-guiding ILFE cavity is investigated. The two models are combined to calculate the fringe contrast, signal and background power, the shot-noise and cross-talk noise in the system. Also the signal extinction is studied as a function of mismatch between the ILFE gagelength and path-matching interferometer gagelength. Finally, suggestions are made to enhance the fringe contrast in ILFE based systems.
Modelling thermal breakup on the Mackenzie River at the outlet of Great Slave Lake, N.W.T.

Thermal breakup on the Mackenzie River at the outlet of Great Slave Lake was documented over the 4-year period, from 1992 to 1995. Measurements of ice and snow thickness, flow characteristics, open water development, air temperature, solar insolation, wind speed, and relative humidity facilitated the formulation of numerical models to forecast the development of open water downstream from the outlet of Great Slave Lake. The rate at which the open water developed was modelled using the complete energy budget equations and a more empirical linear approximation of the heat transfer processes. The linear heat transfer model, when calibrated with heat transfer coefficients from other studies, provided a good fit to the observed data for all 4 years of record. The results from the complete energy budget model were less consistent and it was concluded that given the practical limitations on the type and amount of data typically available to an engineer, the simpler heat transfer approach is more suitable for modelling thermal breakup at this site.
Real-time social media indexing and search

This paper presents a real-time system that incorporates emerging knowledge from social media using crawling and mining techniques, developed within the SocialSensor FP7 project, that are designed for addressing the particularities of social Web. The surfaced information is presented using an interface that is optimized and adapted to the context of the user, taking into account efficient content delivery techniques to optimize quality of experience and enhance user interaction. Research approaches are discussed, particularly focusing in social media analytics, trending topic detection, multimedia indexing and search, and efficient social content delivery and service coordination in mobile settings. We also discuss how these new methodologies are incorporated to build novel tools for the News and Infotainment domains.
Global Path Planning Method for USV System Based on Improved Ant Colony Algorithm

An improved ant colony algorithm based grid environment model for global path planning method for USV was introduced. The main idea of the improved ant colony algorithm was distributing each ant route dynamically. When the active ant was selecting the next route, this algorithm program determined the nearest direction to the end point. There were many possible route points which were distributed artificially. Thereby, the probability for each ant to choose the right direction was increased. The simulating results demonstrate that the improved ant colony algorithm in this paper is very suitable for solving the question of global path planning for USV system in the complex oceanic environment where there are a lot of obstacles. At the same time, this method costs less time, and the path is very smooth.
Development and Empirical Study of Real-Time Simulation-Based Dynamic Traffic Assignment Model

This research aims at developing a system of real-time simulation-based dynamic traffic model under mixed traffic flow conditions. The system consists of two layers, namely, simulation layer and real-time control layer. The system is implemented based on rolling horizon approach, which is advanced for each stage; thus real-time data can be incorporated within the framework. In order to predict normative, as well as predictive, information, a simulation-based dynamic traffic assignment model is employed within each stage. Empirical data for a real city network, such as flows from vehicle detectors, are used to validate the model in a real-time environment. The values of mean absolute percentage error and root-mean-squared percentage error are within 15%, and the results show promising agreements between observed and simulated flows.
Sensorless Vector Control of an Induction Motor Fed by a PWM Inverter Through an Output LC Filter

The paper presents a speed sensorless vector control method for an induction motor that is supplied by a PWM inverter through an output LC filter. The system states are estimated by an adaptive full-order observer, and no additional voltage, current or speed measurements are needed. The rotor speed adaptation is based on the estimation error of the inverter output current. Quasi-steady-state analysis is used to illustrate the speed adaptation, and the stability is analyzed using a linearized model. Simulation and experimental results show that it is possible to achieve performance comparable to that of a drive without the LC filter.
Conceptual study of a shunt power quality compensator

This paper describes how the different methods of eliminating the power disturbances: (1) outages by shunt UPS action, (2) low frequency harmonic disturbances by the "virtual short circuit" principle, (3) swells/sags by the inductive/capacitive reactance principle, and (4) high frequency disturbance by passive filtering, can all be integrated into a single strategy based on reference voltage tracking control. The control law has been derived from first principles. Digital simulation results are presented to prove that the strategy fulfils the multi-functional requirements. The PWM converter which implements the control law is modelled as an ideal linear amplifier.
The Simulation Research of Detecting Metal Debris with Different Shape Parameters of Micro Inductance Sensor

A micro inductance sensor model based on the software of Maxwell to detect the debris in oil is presented. The model is built to study the detecting performance of sensors with different turns and enwinding styles. It can be demonstrated that the planar coil with 15 turns has a better sensitivity to detecting metal debris with about 100 micro meters in size. The solenoid coil with 20 turns has a better performance to detect the micro metal debris. This simulation shows that the detecting performance of a sensor is related to its parameters such as the size, turns, style of enwinding.The optimization of coils for the detection of metal debris with 100 in size is presented at last.
Performance measurement in the Third Sector: the development of a stakeholder-focussed research agenda

This paper addresses a need for greater insight into the theory and practice of performance measurement (PM) in the Third Sector (TS). Effective PM is crucial to the long-term viability of Third Sector organisations (TSOs), since it provides funders with the requisite evidence to demonstrate value for money and to convince them to provide further funding. It also serves to ensure that vulnerable societal groups receive the social care they need and that the internal management processes of TSOs continuously improve their effectiveness and sustainability. PM research has been scant in this sector and our literature review suggests that no extant models or frameworks are particularly suitable in this context, due in part to the wide range of stakeholders and the distinctive characteristics of TSOs. Drawing on a comprehensive review of the literature, we develop the conceptual foundation of PM in the Third Sector and derive a research agenda that provides a platform for future work. This draws in part on the notions embedded in Stakeholder Theory.
Frequency Based Combination Control Strategy for AFMs

Abstract This paper analyzes the relationship between the resonant phenomenon of piezo-scanner and the control system bandwidth in an atomic force microscopy system (AFMs). Based on the results, a novel frequency based combination control strategy is proposed and then implemented with the currently utilized proportional-integral (PI) controller in Z-axis for AFMs. That is, the regulation error is separated into two parts of high frequency content and low frequency content, for which two different controllers are designed to generate two auxiliary control signals, which are then synthesized to actuate the piezo-scanner to improve the performance of AFMs. The designed strategy is analyzed in frequency domain to show that it provides much enhancement for control system bandwidth, and the conclusion is verified by both simulation and experimental results, demonstrating that superior imaging performance for high-speed scanning tasks can be obtained by the proposed combination control strategy.