Miracle-dz/UniFAR-FTUs huggingface dataset:
Intellectual Capital: A Competitive Asset for Driving Innovation in Engineering Design Firms

Abstract: Intellectual Capital (IC) is recognized as a key strategic asset for organizational performance, and innovative solutions and its management is critical for the competitiveness of organizations. The aim of this article is to analyze the relationships among intellectual capital, competitiveness, and innovation drivers in engineering design firms of the Turkish construction industry. The research involves a questionnaire survey administered to engineering firms on intellectual capital constructs, competitiveness, and innovation drivers in construction. The article provides details on how firms can leverage their intellectual capital as the main competitive asset for innovative solutions to offer their clients.
Current-mode analogue interface for high-speed low-current differential signalling

In this work, we propose high-speed low-current differential signalling (LCDS) over an electrical chip-to-chip interconnect by using a common-gate transimpedance amplifier followed by a common-source TIA stage. LCDS uses a current-mode receiver compared to a conventional voltage-mode receiver used in most of the signalling technologies such as low-voltage differential signalling, voltage-mode signalling and current-mode logic. The minimum detectable signal level possible with a current-mode receiver for the targeted bit-error rate (BER) makes LCDS an attractive choice. Also the input impedance of the LCDS receiver can be made equal to 100 Ω differential for matching the characteristic impedance of electrical chip-to-chip interconnect. The complete design, analysis and noise characterisation of the TIA front-end is presented. The CGCSTIA is implemented in 1.8 V, 0.18 μm digital CMOS technology. The input-referred noise current and 3-dB bandwidth of the receiver are 1.57 μA and 5.75 GHz, respectively. For the targeted BER of 10−12, a data transfer rate of 6 Gb/s is achieved, while transmitting the data over a FR4 PCB trace of length 20 cm. The power dissipated in the current-mode receiver is 3.6 mW.
The impact of the London Olympic Parkland on the urban heat island

The London Olympic Parkland represents a substantial area of redevelopment with the potential to significantly modify urban temperatures. This paper illustrates a neighbourhood-scale model of the type that can be used to analyse the impact of large developments on the urban heat island, using the London Olympic Parkland as an example. Using the Atmospheric Dispersion Modelling System Temperature and Humidity model, the impact of the urban surfaces for the Parkland area (∼16 km2) is modelled at a 400 m2 grid resolution for the pre-Olympic, Olympic and Legacy periods. Temperature perturbations from upwind values are simulated for the periods to estimate the contribution the Parkland has on local air temperatures. The results illustrate the impact that large impermeable features such as the concourse might have on increased air temperatures during Olympic period design conditions. In comparison, a Legacy scenario shows temperature reductions from the pre-Olympic period due to an increase in vegetation coverage.
Influence of Shell Thickness on Axisymmetric Longitudinal Wave Propagation in Double Layered Hollow Cylindrical Shell Structure

Based on elastic wave theory, the characteristics for axisymmetric longitudinal wave propagation in double layered hollow cylindrical shell structure with a continuous contact interface are investigated. According to free boundary conditions and interfacial contact continuity condition, the first mode non-dimension dispersion equations for longitudinal wave is derived and validated by calculation data of existing literature. The non-dimension expressions of stress and displacement are deduced and the stress and displacement distribution in cylindrical shell are obtained by calculation examples. Under the fixed outside radius condition, the shell thickness influence on dispersion relation of axisymmetric longitudinal wave and stress and displacement fields in cylindrical shell are discussed. The results show that the thickness of inner shell or outer shell has little influence on dispersion characteristics when the value of wave number is small. As wave number increased, the effect of shell thickness also increased. The stress and displacement in shell increase with the increase of the thickness of inner or outer layer shell when the wave number value is large.
Systemic Choices: Nonlinear Dynamics and Practical Management

The revolution in social scientific theory and practice known as nonlinear dynamics, chaos, or complexity, derived from recent advances in the physical, biological, and cognitive sciences, is now culminating with the widespread use of tools and concepts such as praxis, fuzzy logic, artificial intelligence, and parallel processing. By tracing a number of conceptual threads from mathematics, economics, cybernetics, and various other applied systems theoretics, this book offers a historical framework for how these ideas are transforming the social sciences. Daneke goes on to address a variety of persistent philosophical issues surrounding this paradigm shift, ranging from the nature of human rationality to free will. Finally, he describes this shift as a path for revitalizing the social sciences just when they will be most needed to address the human condition in the new millennium. "Systemic Choices" describes how praxis and other complex systems tools can be applied to a number of pressing policy and management problems. For example, simulations can be used to grow a number of robust hybrid industrial and/or technological strategies between cooperation and competition. Likewise, elements of international agreements could be tested for sustainability under adaptively evolving institutional designs. Other concrete applications include strategic management, total quality management, and operational analyses.This exploration of a wide range of technical tools and concepts will interest economists, political scientists, sociologists, psychologists, and those in the management disciplines such as strategy, organizational behavior, finance, and operations.Gregory A. Daneke is Professor of Technology Management, Arizona State University, and of Human and Organization Development, The Fielding Institute.
The Effect of Initial Void on the Elasto-Plastic Properties of Particle-Reinforced Composite Coating

Many defects such as micro-voids, micro-cracks are introduced during the preparation of particle reinforced composite coating, which significantly change the mechanical properties of the coating. Based on Mori-Tanaka’s concept of average stress in the matrix and Eshelby’s equivalent inclusions microscopic theory, an incremental theory coupled with ABAQUS subroutine UMAT, is developed to study the influence of initial void and void growth on elasto-plastic properties of composite coating. In the composite containing hard spherical particles, debonding of particle-matrix interface is a significant damage process, and the effect of initial void on particle damage is also considered.
The Use of Reservoir Engineering in the Development of the Magnus Oil Reservoir

Data sets from 13 wells have been used in extensive reservoir engineering studies to delineate the Magnus field reservoir and to formulate a development plan. The paper outlines the field data available prior to the start of production and shows how reservoir engineering studies have used the early production history data to resolve uncertainties in the conceptual reservoir model and to optimise the locations of future development wells in order to maximise data acquisition, oil recovery, and oil production potential.
Wheeled Mobile Robot Tracking Control without Velocity Measurement

In this paper, a new robust trajectory tracking control scheme for wheeled mobile robots without velocity measurement is proposed. In the proposed controller, the velocity observer is used to estimate the velocity of wheeled mobile robot. The dynamics of wheeled mobile robot is considered to develop the controller. The proposed controller has the following features: i) The proposed controller has good robustness performance; ii) It is easy to improve tracking performance by setting only one design parameters.
Examination of Permanent Magnet Synchronous Motor

This paper focus on various loading conditions onthe Permanent Magnet Synchronous Motor and its application using field oriented control technique. Constant torqueapplication irrespective of speed isalso presented. This technique helps in lift and belt conveyors handling constant weight of material per unit time, in pumping and compressing and electric locos. Results of simulation shows that proposed system has high acceleration and deceleration rate with vector control,overall quick and dynamic response as well as excellent controlling ability. The vector control is a excellent technology for analysis and design of PMSM drive system. It provides designing and debugging for practical drive system. Modeling and different kinds of Permanent Magnet Synchronous Machines are studied and Simulation is carried out in Matlab and performance is studied at different operating conditions.
Channel Quality Approximation Based on Shadow Fading Model in GEO Mobile Satellite System

CQI(Channel Quality Indicator) is an essential indicator for AMC(Adaptive Modulation and Coding) technique in LTE. Due to the long delay of GEO satellite channel, CQI prediction is necessary to ensure effective AMC. This paper proposes the approximation from real CQI data containing small scale fading to that containing only large scale fading to do prediction. The concrete correlation features and the difference between the approximation and the original data are all analyzed. Simulation is done for confirmation. It shows that the approximate large scale CQI data is feasible and rational for prediction and ensuring AMC efficiency.
Migrations in times of economic crisis: Reflections on labour, inequality and imprisonment in Italy

The Great Recession (2008–13) produced several changes in migratory flows and stock, return migration and foreigners’ legal status, employment, involvement in crime and punishment. In the international context, Italy showed some peculiarities. Unlike other South European countries, Italy did not experience a great worsening of the working conditions of immigrants. Moving from the political economy of punishment approaches (in both traditional and recent declinations), the article describes variations in migration during the recession in Italy, and particularly in immigrants’ working conditions, in order to discuss whether and how punitivity against foreigners (measured by incarceration) has been affected by changes in migrants’ inclusion within Italian society and labour market. The decline in foreigners’ imprisonment is explained by social and economic forces pertaining not to the whole Italian social structure but to a subsystem reserved for migrants that I call ‘migrant social structure’.
Relationship between muscle oxygenation by NIRS and blood lactate

The aim of the study was to investigate the relationship of muscle oxygenation in term of oxy-hemoglobin concentration change (ΔHbO2) by NIRS and blood lactate (BLA) in local skeletal muscle and evaluate the capability of NIRS in the research of exercise physiology Twenty-three athlete in the national fin-swimming team took the increasing load training on the power bicycle while their ΔHbO2 and BLA were simultaneously recorded. The initial powers used in the training were set as 100 w for males and 40 w for females. During the experiment, the power kept constant for 3 min before each abrupt increment of 30 w until the limit of the athlete's capability. Statistical analysis and data visualization were performed. Following the increasing load training, ΔHbO2 step-likely increased in the phase of aerobic metabolism but linearly decreased in the phase of anaerobic metabolism. The variation tendency of BLA was the same as ΔHbO2 and the concurrency of crucial turning points between ΔHbO2 and BLA was revealed. This relationship between ΔHbO2 and BLA presented in the increasing load training suggested that ΔHbO2 might be capable for taking the place of the invasively measured parameter BLA. Considering that ΔHbO2 can be noninvasively measured by NIRS, ΔHbO2 has the potential in the evaluation of athletes' physiological function and training effect on the athletes and accordingly NIRS can be well used in this field.
Artificial Intelligence Based Automated Estimation of Sleep Stages Using Electrocardiograph Signals: A Perspective

The primary goal of this study is to expound the Artificial Intelligence schemes utilized in developing an automated sleep staging sytem. Sleep stages, broadly classified as REM and Non-REM (Rapid Eye Movement) are recognized during sleep studies. Electrocardiogram signal is one among the multiple signals recorded during a sleep study. An effort to bring out the correlation between Electrocardiogram and sleep stages would facilitate in developing an automated screening system for identifying sleep disorders. This study assimilates such researches and their outcomes conducted during the last two decades. It is also emphasized that due to liberal availability of Electrocardiogram data in hospitals, using it to distinguish sleep stages would aid in developing better healthcare. The prime methods identified from the literature are the statistical classifiers and neural network based classifiers.The reports discussed are typical of single night polysomnographic recordings. The collective results are then compared with manually scored sleep stages. Out of the various methods, Support Vector Machines and Detrended Fluctuation analysis are the popular methods owing to their nature of analyzing non stationary signals.
The pulse rate and energy expenditure profile of underground coal miners in India

Abstract In underground mines, miners have to work in a severe conditions with excessive heat, high humidity, noise, poor illumination, vibration, dust, noxious gases, etc. In order to achieve successful extraction of coal, miners perform many unit operations involved in underground coal mining, in which roof dressing plays a significant role with respect to safety and the preparation of coal. A jobspecific study to evaluate the energy expenditure trend for various work positions of three underground coal dressers (classified according to their height) is reported.
Indefinite-admittance matrix formulation of feedback amplifier theory

It is shown that the return-difference and the null return-difference functions of a feedback amplifier can be elegantly and compactly formulated in terms of the first- and the second-order cofactors of the elements of its indefinite-admittance matrix. The relationship between the generalized cofactors of the elements of the cutset-admittance matrix and the second-order cofactors is indicated. Based on these results, topological formulas for these functions are presented. The significance of the new formulation is that it avoids the necessity of interpreting the loop gain in terms of the actual signal transmission around the closed loops in a flow graph, which in many cases is very misleading.
Microwave waveguide filter with broadside wall slots

An investigation into rectangular waveguide filters with open slots on the broad side walls is reported. This type of waveguide filter eliminates the need for direct contact between the two waveguide halves and intentionally leaves a gap in the middle of broad side walls. For X-band (8.2–12.4 GHz) waveguides, such a gap can be nearly as wide as 9% of the internal waveguide width a, without introducing any significant radiation loss. A fifth-order filter centred at 10 GHz with a fractional bandwidth of 2% is designed based on such a structure, and fabricated from aluminium and tested. There is good agreement between measurement and simulation results. This verifies the proposed structure as well as the design procedure.
Sustainable development integration in Greek schools of engineering: current situation, experiences and actions

In this paper, a comprehensive study regarding the assessment of sustainable development (SD) integration in Greek schools of engineering is presented. More specifically, the undergraduate and graduate curricula and websites of all schools of engineering in Greece were examined to identify SD-related content and actions. Moreover, a simple guide for embedding SD into engineering schools was established, based on the experiences of successful implementation and strategies from highly recognised technical universities worldwide, to benchmark the Greek experience and to propose indicative measures for incorporating SD teaching in Greek universities. Results indicated that changing the curriculum is not the only way to efficiently incorporate SD in universities, whereas there are gaps concerning the integration of sustainability principles and tools in Greek engineering universities. Furthermore, the initial steps of incorporating SD-related actions at an engineering department are presented and analysed indicating some characteristic key factors affecting the efficient incorporation of SD tools in engineering courses.
A Friction Model Describing Limit Cycles in Positioning Servos

In this paper we describe a novel model for servo positioning systems. Non-linear representations of friction, backlash, controllers, and process dynamics are integrated into a model having a closed-loop configuration where unwanted oscillations, such as hunting (stick-slip) and resonant frequencies, are reproduced. This continuous model contains the different types of friction (Coulomb, Stribeck, and viscous) and the dynamics of a digital controller with a standard configuration. A case study consisting of a gun mount driven by hydraulic actuators is analyzed. Real data is used for the identification and validation of the mathematical representation. Empirically obtained static friction values are used for tuning the model at low speeds. An excellent matching is accomplished between the model and the real response. The model also reproduces the dependence of the resonant frequencies to the rotating velocity that is generally observed in this type of feedback system. The model can be a powerful tool for testing new control strategies. It looks for reductions in oscillation, predicts limit cycles, and detects faults.
Measurement of micro-hole with high aspect ratio by double optical fibers coupling

In order to measure the geometry of a micro-hole with high aspect ratio, we made the light coming out from the laser to transmit in the reversal direction by double optical fibers coupling, modeled both the energy distribution at the end of an optical fiber and the output of CCD, used zernike moment subpixel algorithm to locate the edge of an image and a compensation algorithm to improve the precision of edge location. The effectiveness of the method newly developed is verified through experiments. Experimental results indicate that the newly developed method can be used to measure the geometry of a blind hole of 2.0mm depth with a diameter of about 0.2mm using a double frequency interferometer with a repeatability uncertainty of less than 0.4m.
Dynamic Endothelialization of Aortic Heart Valve Scaffolds

i ACKNOWLEDGMENTS . iii TABLE OF CONTENTS . iv LIST OF TABLES . vii LIST OF FIGURES . viii 1 INTRODUCTION AND BACKGROUND . 1 1.1 Cardiac Anatomy and Physiology . 1 1.2 Heart Valve Anatomy and Physiology . 4 1.3 Heart Valve Cell Types and Their Function . 7 1.4 Heart Valve Pathology . 9 1.5 Current Valve Replacement Treatments . 10 1.6 Current Research and Future Direction . 14 1.7 Cell Seeding Techniques . 19 1.7. 1 Static Seeding . 19 1.7. 2 Dynamic Seeding . 21 1.7. 3 Perfusion Seeding . 25 2 PROJECT APPROACH AND RATIONALE . 28 3 MATERIALS AND METHODS . 30 3.1 Scaffold Preparation . 30 3.1.1 Fresh Tissue Harvesting . 30 3.1.2 Heart Valve Decellularization . 30 3.1.3 Fixation . 31 3.2 Porcine Aortic Endothelial Cell Culture . 34 3.2. 1 Fibronectin (FN) Cell Culture Flask Coating Protocol . 34 3.2. 2 Cell Culture and Confluent Cell Passaging . 34 3.2. 3 Cell Counting . 35 3.3 Dynamic Seeding Device Design . 35
Cooperative Mission Planning with Multiple UAVs in Realistic Environments

In this paper, a mission planning system is developed for managing multiple unmanned aerial vehicles (UAVs) of various capabilities to execute a series of missions over multiple targets. A target may need up to three tasks (i.e., classification, attack, and verification) to be carried out in sequence. The problem is addressed in two decision-making stages. First, the shortest feasible flying path for a UAV to fly between any pair of task locations is obtained using a customized A* algorithm. During the search, constraints such as collision avoidance from terrain, circumvention of flight prohibition zones, and the flying capabilities of UAVs are considered. In the second stage, with the obtained UAV flying paths between task locations, mission planning is modeled as a vehicle routing problem (VRP) with time window and precedence requirements. A genetic algorithm with a built-in mixed integer programming (MIP) solver is developed to solve the problem. The outputs of this proposed planning system include (1).
Next-masigpro: Dealing with RNA-seq time series

Recent advances in sequencing technologies have created alternatives to microarrays. These new type of data require an appropriate statistical treatment to get good results. New methods are needed but it is also important the study of the adequateness of the existing methods and the adaptation of them to the new type of data. maSigPro is a method to deal with time course microarray data that has been applied in several biological scenarios. In this work, we adapt maSigPro to RNA-seq time series analysis.
Compressor Performance 2D Modelling at Reverse Flow Conditions

After a shaft failure the compression system of a gas turbine is likely to surge due to the heavy vibrations induced on the engine after the breakage. Unlike at any other conditions of operation, compressor surge during a shaft over-speed event is regarded as desirable as it limits the air flow across the engine and hence the power available to accelerate the free turbine. It is for this reason that the proper prediction of the engine performance during a shaft over-speed event claims for an accurate modelling of the compressor operation at reverse flow conditions. The present study investigates the ability of the existent two dimensional algorithms to simulate the compressor performance in backflow conditions. Results for a three stage axial compressor at reverse flow were produced and compared against stage by stage experimental data published by Gamache. The research shows that due to the strong radial fluxes present over the blades, two dimensional approaches are inadequate to provide satisfactory results. Three dimensional effects and inaccuracies are accounted for by the introduction of a correction parameter that is a measure of the pressure loss across the blades. Such parameter is tailored for rotors and stators and enables the satisfactory agreement between calculations and experiments in a stage by stage basis. The paper concludes with the comparison of the numerical results with the experimental data supplied by Day on a four stage axial compressor.Copyright © 2010 by ASME