Miracle-dz/UniFAR-FTUs huggingface dataset:
Fabry-Perot photonic temperature sensor system

In order to monitor aircraft engine performance, there is a need for a sensor which can accurately measure temperature from -50/spl deg/C to 600/spl deg/C in an aircraft environment. The objective of the development and testing of this prototype sensor system was to determine the feasibility of operating an optical sensor in such a hostile environment. In this work a photonic sensor was utilized to monitor the exhaust gas temperature (EGT) of an OV-10D aircraft engine. The sensor has successfully flown over 50 hours and proven to be immune to source fluctuations, surface deterioration of the optical element (located inside the sensor head), and able to withstand and operate in normal flight conditions as well as sustained severe flight conditions with forces exceeding 4 g's. Potential commercial uses for this sensor include monitoring temperature for aeropropulsion system control, military vehicle and naval engine control, conventional and nuclear power plant monitoring, and industrial plant monitoring.
Designing mobile technologies for individuals with disabilities

While mobile devices offer many innovative possibilities to help increase the standard of living for individuals with disabilities and other special needs, the process of developing assistive technology, such that it will be effective across a group of individuals with a particular disability, can be extremely challenging. This chapter discusses key issues and trends related to designing and evaluating mobile assistive technology for individuals with disabilities. Following an overview of general design process issues, we argue (based on current research trends) that individuals with disabilities and domain experts be involved throughout the development process. While this, in itself, presents its own set of challenges, many strategies have successfully been used to overcome the difficulties and maximize the contributions of users and experts alike. Guidelines based on these strategies are discussed and are illustrated with real examples from one of our active research projects.
Emergent Ideas from Emerging Markets: The Process of Discovery in Organizational Research

Purpose – To advance narrative and context-based organizational research. Approach – We detail how a research design can dynamically unfold and be adjusted based on feedback from multiple sources, with three components to this process: requisite conceptual openness, methodological adjustment, and acknowledgement of prescient issues. Three examples in existing literature are analyzed, demonstrating how this process can facilitate the development of novel lines of inquiry. Research implications – Our framework and the practical guidelines we advocate here are a resource for scholars to allow new conceptualizations to blossom and grow in perhaps unexpected directions, which may not otherwise have been charted without this exploratory process. Originality/Value – The process of discovery is a contribution toward research methodology and design, as a helpful method for maximizing richness in contextual research. This approach may be particularly important in emerging markets and other settings with unexplored organizational processes.
Optimization of design parameters of a limited angle torque motor using analytical hierarchy process and axiomatic design theory

The limited angle torque motor (LATM) has been widely used in systems that require limited motion, ranging from the simple ON–OFF servo valves to the accurate tracking of a reference signal. This paper presents the optimum design procedures of a LATM. According to a request from industry, a two-pole LATM with a toroidal armature winding was designed based on analysis of magnetic equivalent circuit of motor structure, and using selected ferromagnetic material and rare-earth permanent magnets. To select the best design solution, the decision-making tools called analytical hierarchy process (AHP) and axiomatic design (AD) methodologies are employed, respectively. Considering the industrial requirements, AD is proposed to minimise the effect of expert’s judgments and pursue the simple design procedure. Comparison of the AD and AHP methodologies shows that the AD has more confirmation with the industrial design ranges. It requires minimum experts’ interventions and reduces the design computation time.
Families of sound attributes for assessment of spatial audio

Over the last years, studies have highlighted many features liable to be used for the characterization of sounds by several elicitation methods. These various experiments have resulted in the production of a long list of sound attributes. But, as their respective meaning and weight are not alike for assessors and listeners, the analysis of the results of a listening test based on sound criteria remains complex and difficult. The experiments reported in this paper were aimed at shortening the list of attributes by clustering them in sound families from the results of two semantic tests based on either a free categorization (i) or use of a multi-dimensional scaling method (ii).
Measuring technological innovation of small and medium-sized manufacturing enterprises in China

A preliminary investigation was conducted to collect data of technological innovation of small and medium-sized manufacturing enterprises (SMMEs) in Hunan Province, China by questionnaire which was drawn up in close agreement with the main principles of the Oslo Manual. Then an index system and mathematical model were developed to measure technological innovation in SMMEs. Results obtained in this paper revealed that the current status of technological innovation in SMMEs is relatively weak compared to other countries according to the levels of input, intensity and outcome measures of technological innovation.
Navigation of military and space unmanned ground vehicles in unstructured terrains

Development of unmanned vehicles for local navigation in terrains unstructured by humans is reviewed. Modes of navigation include teleoperation or remote control, computer assisted remote driving (CARD), and semiautonomous navigation (SAN). A first implementation of a CARD system was successfully tested using the Robotic Technology Test Vehicle developed by Jet Propulsion Laboratory. Stereo pictures were transmitted to a remotely located human operator, who performed the sensing, perception, and planning functions of navigation. A computer provided range and angle measurements and the path plan was transmitted to the vehicle which autonomously executed the path. This implementation is to be enhanced by providing passive stereo vision and a reflex control system for autonomously stopping the vehicle if blocked by an obstacle. SAN achievements include implementation of a navigation testbed on a six wheel, three-body articulated rover vehicle, development of SAN algorithms and code, integration of SAN software onto the vehicle, and a successful feasibility demonstration that represents a step forward towards the technology required for long-range exploration of the lunar or Martian surface. The vehicle includes a passive stereo vision system with real-time area-based stereo image correlation, a terrain matcher, a path planner, and a path execution planner.
High Power rf Test on X‐band MgxCa1−xTiO3 Based Dielectric‐Loaded Accelerating Structure

In this paper, we report experimental results on a series of high‐power rf tests for dielectric‐loaded accelerating (DLA) structures using a high power X‐band Magnicon at the Naval Research Laboratory. The dielectric material loaded into this DLA structure is a commonly used high‐Q ceramic, MgxCa1−xTiO3 (MCT), with a dielectric constant of 20. The purpose of these experiments is to study high‐power phenomena in the DLA structure. Two important phenomena have been observed during these experiments. First, multipactor effects are strongly dependent on the dielectric material used in the DLA structure. In this case, the multipactor‐induced power absorption threshold and trend to higher power differ when MCT is used instead of alumina. Second, although we did not observe dielectric breakdown in the bulk dielectric, breakdown occurred at the butt‐joint between adjacent dielectric sections in the MCT structure. This occurs because of manufacturing imperfections of the joint that cause large, local field enhance.
The application analysis of GaN power devices in Radar transmitter

Radar and electronic warfare (EW) system designers continually seek more affordable, lower weight, lower volume, and higher performance electronics that will support improved system effectiveness.Wide bandgap semiconductors are extremely attractive for the gamut of power electronics applications from power conditioning to microwave transmitters for Radar. Of the various materials and device technologies, the GaN HEMT seems the most promising. Compared with Si power device, it has remarkable advantages in output power, power density, operating frequency, operating bandwidth, environment adaptability and total efficiency and so on. It is shown that the superior physical attributes of GaN wide bandgap power devices lead to microwave transistors that are extremely well suited for high power applications. The performance characteristics and advantages of the GaN wide bandgap semiconductor are analyzed in detail. An L band 40 W power amplifier was developed with the GaN wide bandgap semiconductor power devices. The performance test was carried out, which showed that compared with Si power device, the performance of Radar transmitter can be improved with the application of GaN wide band gap power devices. The superior properties of GaN wide band gap power devices make GaN technology a prime candidate for use in transmitters for radar systems. (5 pages)
Demonstrating the benefits of knowledge management assets : developing and applying a valuation methodology

Since the early 1980s numerous knowledge-dependent organizations have made diligent attempts to measure their intangible assets. In more recent years, knowledge-dependent organizations have expressed a desire to demonstrate the benefits resulting from significant investments in knowledge management assets in order to provide reassurance to senior executives, to motivate knowledge worker utilization of the asset, and to leverage further funds for knowledge management investments. A six-step methodology is prescribed in this thesis to assist organizations seeking to identify both qualitative and quantitative benefits realized from the utilization of knowledge management assets. This methodology is underpinned by take-a-ways from current intellectual capital measurement models found in literature, and the lessons learned from industry application of an immature version of the prescribed methodology in two industry case studies. Lessons learned from the practical applications of the methodology, and a detailed description of the methodology, are provided as key findings of this thesis. Application of the methodology in the provided industry case studies indicates significant benefits from the utilization of knowledge management assets can be demonstrated if the appropriate performance indicators are selected for measurement. Thesis Supervisor: Eric S. Rebentisch, PhD Title: MIT Lean Aerospace Initiative, Research Associate
Microcontrolled system for measuring skin/electrode impedance in bioelectrical recordings

This work presents equipment able to measure impedance of skin-electrode interface during the recording of biopotentials. This equipment is connected to a system previously developed in our laboratory for signal acquisition (SAASBIO-III). The aim is to assess the impedance and warn the operator if the measured values are not suitable. The electrode may be replaced to improve the measurements.
Enhancement Of Voltage Profile Of Transmission Line By Using Static VAR Compensator-An Overview

One of the main prerequisite of the modern power system is the enhancement and control of voltage from varying from its desired value. For this we used many compensation techniques. In this paper a case study for a particular transmission line has been carried out to enhance and control the voltage profile using compensation. This paper presents the basic aspect of voltage profile enhancement and control without contingency by simple and efficient use of capacitor bank. The effectiveness of proposed experimental result demonstrated on model of 750 kV ,250 km,1000MW EHV lines. Index terms--compensation, line compensation, series, shunt, static VAR compensation, contingency.
On the Role of Delays in Biological Systems : Analysis and Design

This work quantifies the nature of delays in genetic regulatory networks and their effect on system dynamics. It is known that a time lag can emerge from a sequence of biochemical reactions. Applying this modeling framework to the protein production processes, delay distributions are derived in a stochastic (probability density function) and deterministic setting (impulse function), whilst being shown to be equivalent under different assumptions. The dependence of the distribution properties on rate constants, gene length, and time-varying temperatures is investigated. Overall, the distribution of the delay in the context of protein production processes is shown to be highly dependent on the size of the genes and mRNA strands as well as the reaction rates. Results suggest longer genes have delay distributions with a smaller relative variance, and hence, less uncertainty in the completion times, however, they lead to larger delays. On the other hand large uncertainties may actually play a positive role, as broader distributions can lead to larger stability regions when this formalization of the protein production delays is incorporated into a feedback system. Furthermore, evidence suggests that delays may play a role as an explicit design into existing controlling mechanisms. Accordingly, the reccurring dual-feedback motif is also investigated with delays incorporated into the feedback channels. The dual-delayed feedback is shown to have stabilizing effects through a control theoretic approach. Lastly, a distributed delay based controller design method is proposed as a potential design tool. In a preliminary study, the dual-delayed feedback system re-emerges as an effective controller design.
Implementation and Analysis of IP Tunnel in Virtual Private Networks

In Virtual Private Network tunneling is designed to examine the performance of Private network for transferring the data. It implements and analysis the IP tunnel in Virtual Private Network (VPN). Tunneling is a method that is used to transfer the data or packet of one protocol using different network communication mediums of another protocol. This research is emphasized to examine the performance of Private network using tunneling for the transfer of data. Basically tunneling is used to send a packet, data or traffic of one protocol using an intermediate structure of another protocol. It is called as the process of encapsulation, transmission, over different types of secured networks as encapsulation and security is one of the procedure within this network provides security . This paper gives overview of a Virtual Private Network with IP Tunnel. Virtual private Network generates a secure encryption and decryption of data with the help of IP tunneling at end points. Basically VPN routes through the internet from a private network to transferring the data from one end (source) to other end (destination). With the help of tunneling and VPN user can check the working of different parameters under various applications.
Optimal control for vibration peak reduction via minimizing large responses

An optimal control method for peak response reduction and its application to a tall building structure for reducing peak earthquake responses are presented in this paper. A critical value is used for magnifying large responses and performance index. A structural control system is transformed, and the dynamical programming principle is applied to form a dynamical programming equation. For a certain higher‐order power function in the index, a nonlinear optimal control law with the corresponding Riccati equation is obtained for minimizing structural large responses or peak responses. The asymptotic stability of the autonomous controlled system is proved by using the Lyapunov method. Then the proposed control method is applied to a single degree‐of‐freedom system and a 51‐storey building structure with active mass damper on the top floor under earthquake excitation. Numerical results on peak displacements, interstorey drifts, accelerations and controls are given to illustrate the high control effectiveness of the proposed control method for peak response reduction. The proposed control method has a simple and convenient procedure for multi‐degree‐of‐freedom structures. Copyright © 2014 John Wiley & Sons, Ltd.
Optimization Models for Allocation of Air Strike Assets with Persistence

Abstract : This thesis addresses the critical process of assigning strike aircraft to targets once the targets have been identified: How do we optimally employ available aircraft and weapons on the current set of targets, and how can we modify a previously optimized assignment list to face changes in the tactical situation? Our contribution to the strike-planning problem includes (1) a static allocation model in which each aircraft makes at most one sortie during the planning time horizon, (2) a dynamic model in which each aircraft may make more than one sortie during that horizon, and (3) extensions of these models with "persistence incentives," which discourage major plan changes in the results when partial but important changes in the tactical situation necessitate reoptimization. These optimization models are mixed-integer programs that solve in seconds on a personal computer for realistic scenarios with three weapons types, 156 aircraft at seven bases, and 100 potential targets. In a scenario in which two new high-priority targets arise and must be added to an air tasking order with eight original targets, persistence incentives reduce the number of major plan changes from five to two.
The acute effect of stretching on the kinematics of instep kicking in soccer

Some previous research indicates that compared to dynamics stretching, static stretching may inhibit the performance of the instep kick, but the effect of these two modes of stretching on soccer players with differing levels of playing experience is not known. Hence, the purpose of this study was to examine the effects of static and dynamic stretching during pre-exercise warm-up on lower extremity kinematics during soccer instep kicking in less and more experienced players. Twenty-four professional male soccer players (12 less experienced and 12 more experienced players) volunteered to participate. Lower extremity joint kinematics of soccer instep kicking were analyzed after static stretching, dynamic stretching, and no-stretching warm-up protocols. The kinematic variables analyzed were the maximum hip angular velocity and maximum knee angular velocity during the leg acceleration phase, and maximum ball velocity after impact phase. Relative to the no-stretching condition, both less and more experienced players had significantly larger hip angular velocity, knee angular velocity, and ball velocity after dynamic stretching than after static stretching. There were no significant differences in joint angular kinematics and ball velocity data between less and more experienced players after static stretching compared to dynamic stretching. This study suggests that dynamic stretching within warm-ups may be more effective than static stretching as a preparation for the instep kick in soccer players.
Probabilistic Design of Structures Submitted to Fatigue

The fatigue behavior of materials submitted to cyclic loading is a random phenomenon at any scale of description. When considering materials without microscopic defects, the fatigue initiation sites usually correspond to the creation of slip bands within the superficial grains and are influenced by the size and the location of the grains as well as the roughness of the material surface. When considering materials with inclusions (e.g. carbides within nickel-based alloys) or defects (microcavities in cast steels), the latter may become preferential sites for crack initiation. The location and the size of these defects within an elementary material volume are naturally random ([BAT 10], Chapter 3).
Simulation of transportation movements over constrained infrastructure networks

The Enhanced Logistics Intra-Theater Support Tool (ELIST) is a simulation-based decision support system that evaluates a military deployment plan at the theater level for transportation and logistical feasibility. ELIST includes a discrete-event, time-stepped simulation kernel written in C, an object-oriented database written in Prolog, and a set of knowledge-bases that describe various operations, such as throughput capacity of ports, based on the attributes of the relevant objects. In the course of its development, ELIST has been used to support various planning activities.
Field deployable dynamic lighting system for turbid water imaging

The ocean depths provide an ever changing and complex imaging environment. As scientists and researches strive to document and study more remote and optically challenging areas, specifically scatter-limited environments. There is a requirement for new illumination systems that improve both image quality and increase imaging distance. One of the most constraining optical properties to underwater image quality are scattering caused by ocean chemistry and entrained organic material. By reducing the size of the scatter interaction volume, one can immediately improve both the focus (forward scatter limited) and contrast (backscatter limited) of underwater images. This thesis describes a relatively simple, cost-effective and field-deployable low-power dynamic lighting system that minimizes the scatter interaction volume with both subjective and quantifiable improvements in imaging performance. Thesis Supervisor: Hanumant Singh Title: Associate Scientist with Tenure Woods Hole Oceanographic Institution
Fuzzy Logic Design Approach for A Singly Reinforced Concrete Beam

This paper presents the Fuzzy logics approach for a singly reinforced concrete beam. The rules are generated for the FIS for the variables. The width, and the moment constitutes the crisp data for the inputs and the steel ratio represents the crisp output. The MATLAB fuzzy tool kit is used to execute the simulation. The code prescription of the design of a singly reinforced concrete beam is a straight forward calculation. However, the overestimation of reinforcement can be enormous. This can be very impacting on the cost of the project. This work attempts to use fuzzy logic predictive power to design a singly reinforced concrete beam. The result reasonable agreement between the code provisions and the fuzzy logic predictions. It was established that fuzzy logic can be adopted as a significant technique for the optimization of the design of a singly reinforced concrete beam.
Performance of a laboratory-scale DiCOM® reactor - a novel hybrid aerobic/anaerobic municipal solid waste treatment process

The process combines aerobic composting with anaerobic digestion in a sequencing batch reactor. A laboratory-scale DiCOM® reactor, fed with mechanically sorted municipal solid waste (C:N 18:1; TVS 56%), demonstrated a seamless transition from aerobic to anaerobic metabolism with methane being produced within 4 hours of the establishment of anaerobic conditions. Average methane production during the anaerobic phase was 18.2L/day/kg of TVS. An electron balance highlighted that of the total solid degraded (41% of TVS) the anaerobic phase of the process accounted for approximately one third (34%). The compost produced was found to be stable (self-heating test) and mature (root elongation test and humic/fulvic acid ratio).