Miracle-dz/UniFAR-FTUs huggingface dataset:
Multi-level decision-based system architecting

Decision-based system architecting represents a complex system as a set of interconnected decisions that a . system architect can make about the trade space. Modeling a system using decision-based frameworks allows the architect to not only enumerate and evaluate feasible architectures, but also, to gain insight into how influential each decision is to the overall system. A single-level decision-based model allows an architect to examine the decisions and architectural combinations at a single level of abstraction of the architecture. Through linking of multiple single-level models, each focusing at a diffirent level of abstraction of the architecture, the system architect can gain insight into the decisions and options for system, element, and component designs while maintaining the validity of the decision support data provided by the models. Single and multi-level decision based system architecting is applied to multiple future human spaceflight projects. The architecture of the Lunar Surface System and the mission design for a human Near Earth Object (NEO) mission are examined through single-level models. The habitat design fbr potential NEO missions is further examined through the application of multi-level decision-based system architecting techniques. Thesis Supervisor: Edward F. Crawley Title: Ford Professor of Engineering
Short low-loss nanowire tapers on singlemode fibres

The successful production of very short, very low-loss nanowire tapers from singlemode optical fibres is reported. A pre-heated taper process in which the fibre is pre-necked is introduced. A waist diameter of 400 nm is found to be the point of delineation between strong guidance (>400 nm) and weak guidance (<400 nm) in these structures.
Adaptive Frequency Estimation of Distorted Power System Signals Using Modified Extended Kalman Filter

This research presents a method for frequency estimation of distorted power system signals using a modified Extended Kalman Filter (EKF). Distorted signals which have been obtained from measurements may involve noises which may affect the accuracy of frequency measurement in a power system. Thus, the proposed method is employed to eliminate and filter noise and hence to improve the efficiency of frequency estimation. Computer simulations have been carried out for the performance analysis of the proposed method and the comparison of the results of the proposed method with the former Extended Kalman Filter results are presented. The effectiveness of the new approach in power system frequency estimation was emphasized.
Staged Premix EV Combustion in Alstom’s GT24 Gas Turbine Engine

Reducing gas turbine emissions and increasing their operational flexibility are key targets in today’s gas turbine market. In order to further reduce emissions and increase the operational flexibility of its GT24, Alstom has introduced an internally staged premix system into the GT24’s EV combustor.This system features a rich premix mode for GT start-up and a lean premix mode for GT loading and baseload operation. The fuel gas is injected through two premix stages, one injecting fuel into the burner air slots and one injecting fuel into the centre of the burner cone. Both premix stages are in continuous operation throughout the entire operating range, i.e. from ignition to baseload, thus eliminating the previously used pilot operation during start-up with its diffusion-type flame and high levels of NOx formation.The staged EV combustion concept is today a standard on the current GT26 and GT24. The EV burners of the GT26 are identical to the GT24 and fully retrofittable into existing GT24 engines. Furthermore, engines operating only on fuel gas (i.e. no fuel oil operation) no longer require a nitrogen purge and blocking air system so that this system can be disconnected from the GT. Only minor changes to the existing GT24 EV combustor and fuel distribution system are required.This paper presents validation results for the staged EV burner obtained in a single burner test rig at full engine pressure, and in a GT24 field engine, which had been upgraded with the staged EV burner technology in order to reduce emissions and extend the combustor’s operational behavior.Copyright © 2012 by Alstom Technology Ltd.
Technological Competency and New Product Development Performance: The Moderating Role of Environmental Turbulence

Although studies have emphasized the importance of fit between technology competency and environmental factors on new product development, the empirical examination of this field has been somewhat scarce. This paper therefore examines whether the fit between technology competency and environmental turbulence exist, and impact of this fit on firm’s new product performance. Based on a survey of cross-industry sample of 336 manufacturing SMEs in China, we find that technology competency and environmental turbulence interactively impact NPD performance. Specifically, the efficiency of internal technology competency would deteriorate in dynamic environment.
Bilingual (English to Bengali) Technical E- Dictionary for Aviation OOV Words

E-dictionaries, quite common today are available for multiple languages in monolingual, bilingual and multilingual forms. In NLP they form the core of a series of tools that are used to understand words, sentences and in turn the language itself. These E-Dictionaries work well for any language domain as a whole. For almost all languages E-dictionaries are available, but once specialized technical domains are encountered these E-Dictionaries are quite useless. Aviation is one such specialized domain for which no E-Dictionary, translation or transliteration tool exist. On the other hand the need for such tools for specialized domains are increasing. The tool discussed in this paper is an attempt to bridge the gap that currently exists between English and Bengali languages.
Strongman: strength and conditioning practices, and the inter-relationships between strength, anthropometrics and performance

xiii CHAPTER 1. PREFACE 1 1.1 Thesis Rationale and Significance 1 1.2 Research Aims and Hypotheses 3 1.3 Research Design 3 1.4 Originality of the Thesis 4 1.5 Thesis Organisation 4 CHAPTER 2. STRENGTH AND CONDITIONING PRACTICES: A REVIEW OF THE LITERATURE 6 2.1 Prelude 6 2.2 Introduction 8 2.3 Exercise selection 14 2.4 Training Protocols 16 2.5 Training Organisation 21 2.5. 1 Periodisation 21 2.5. 2 Power training methods 24 2.5. 3 Variable Resistance Training 28 2.5. 4 Aerobic/anaerobic conditioning 30
Miniaturized quadrature hybrid coupler using high impedance lines

In this article, a new configuration has been proposed for miniaturization of a branch‐line 90° hybrid coupler. The present coupler is obtained by replacing the low impedance series arms of a conventional coupler by their equivalent parallel high impedance lines. This arrangement facilitates meandering, used to realize a compact geometry. The main advantage of the proposed coupler is that it has approximately the same bandwidth as that of a conventional one. A prototype coupler area is 45.3% of that of a conventional branch‐line coupler. The design is validated by full‐wave electromagnetic simulation and measurement. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1135–1137, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23320
Compensatory Fuzzy Logic Uses in Business Indicators Design

Most of the information needed for the management in the decision making process is essentially based on subjective and imprecise concepts expressed primarily by "experts" in a natural language or based in simples indicators and it’s not capable to check the strategy in a more integral way. In the present research we show two application of the compensatory fuzzy logic to resolve the problem mentioned above. As the main contributions we show first an aggregation method to design new indicators based on the statistic and compensatory fuzzy logic approach and as second we define a new indicator to measure the IT governance level.
Lean Software Development: An Agile Toolkit

From the Publisher: In Lean Software Development, Mary and Tom Poppendieck identify seven fundamental "lean" principles, adapt them for the world of software development, and show how they can serve as the foundation for agile development approaches that work. Along the way, they introduce 22 "thinking tools" that can help you customize the right agile practices for any environment. Better, cheaper, faster software development. You can have all three--if you adopt the same lean principles that have already revolutionized manufacturing, logistics and product development. Iterating towards excellence: software development as an exercise in discovery Managing uncertainty: "decide as late as possible" by building change into the system. Compressing the value stream: rapid development, feedback, and improvement Empowering teams and individuals without compromising coordination Software with integrity: promoting coherence, usability, fitness, maintainability, and adaptability How to "see the whole"--even when your developers are scattered across multiple locations and contractors Simply put, Lean Software Development helps you refocus development on value, flow, and people--so you can achieve breakthrough quality, savings, speed, and business alignment.
68.5L: Late‐News Paper: Advances in Active‐Matrix Color Displays Using Electrophoretic Ink and Color Filters

An improved full color active matrix electronic paper display (EPD) prototype using a custom design color filter array with E Ink's electrophoretic technology is reported. Improvements over previous efforts are achieved by using a) improved ink formulations with higher dynamic range, b) 4 bit gray scale for each color and c) a color filter design with RGBW pixel layout to improve brightness and dynamic range. As a result, the whiteness of the background page is preserved while enabling color. In addition, due to the “paper‐like” optics, the brightness and saturation of the optical states are largely independent of viewing angle or illumination conditions.
Automated fault location and diagnosis on electric power distribution feeders

This paper presents new techniques for locating and diagnosing faults on electric power distribution feeders. The proposed fault location and diagnosis scheme is capable of accurately identifying the location of a fault upon its occurrence, based on the integration of information available from disturbance recording devices with knowledge contained in a distribution feeder database. The developed fault location and diagnosis system can also be applied to the investigation of temporary faults that may not result in a blown fuse. The proposed fault location algorithm is based on the steady-state analysis of the faulted distribution network. To deal with the uncertainties inherent in the system modeling and the phasor estimation, the fault location algorithm has been adapted to estimate fault regions based on probabilistic modeling and analysis. Since the distribution feeder is a radial network, multiple possibilities of fault locations could be computed with measurements available only at the substation. To identify the actual fault location, a fault diagnosis algorithm has been developed to prune down and rank the possible fault locations by integrating the available pieces of evidence. Testing of the developed fault location and diagnosis system using field data has demonstrated its potential for practical use.
Earthquake Response of Flat-Slab Buildings

System identification, three-dimensional linear dynamic analysis, and code-specified conventional equivalent static techniques are used to evaluate the response of a nine-story flat-slab building during the Loma Prieta Calif. , earthquake of 1989. Four different models are used in the finite-element–based dynamic and static analyses. The system identification results on natural frequencies, mode shapes, and interstory drifts are used to validate the four analytical models. It is found that the model with a 30% live load included in the mass computation, a 2/3 reduction in the stiffness of slabs, and 30% reduction in stiffness of columns and shearwalls appears to give a reasonable overall approximation of the measured response. The eccentricity of the central shearwall core in the east-west direction promoted torsional response. Both the dynamic analysis and system identification results indicate that the shearwall kept the drift level at the central core within the code limit. At the east and west end of the building, where frame action dominates, the drift level reached the code limit. The horizontal forces were mostly resisted by the core shearwalls. The base shear coefficient in the north-south direction determined from the dynamic analysis was close to that of the equivalent static procedure. In the east-west direction, however, the dynamic base shear coefficient was twice as much.
Framework Design of Cloud Computing Based Environmental Information Disclosure Platform

In order to promote multi-directional exchanges among environmental management departments, enterprises and public to improve capacity of environmental information disclosure, environmental governance open innovation model based on environmental information disclosure should be established to take advantage of the public pressures of environmental governance to promote improvement of environmental behavior of enterprises and government departments. Environmental governance open innovation model is based on the public access to environmental information, thereby establishing a comprehensive environmental information platform is essential. By taking advantage of cloud computing technology features of ultra-large-scale, high scalability and on-demand services, a cloud computing based environment information platform will be established to meet needs of public access to environmental information and environmental participation. The platform can customize different services for different users, and promote the development of environmental governance mode to achieve the improvement of environmental quality.
Composite Box Girder Bridge Behavior During Construction

Steel-concrete composite box girder bridges may have a flexible open box section prior to the placement of the slab. Excessive twist or distortion can arise under construction loading. Bracing systems are usually installed within the girder during construction to increase the torsional and distortional stiffness of the open section. The influence of these bracing systems on open box behavior is discussed using finite strip analysis results and a one-quarter scale girder model test data. Tie and distortional bracing were found effective in preventing distortion, with web stiffening found to be more effective than interior cross bracing. Horizontal bracing at the flange level was considered to reduce twisting of the section. This bracing can take the form of either torsion boxes or top chord bracing, both being effective. A torsion-bending analysis based on a rigid section behavior is discussed.
Mental Workload Analysis during the Production Process: EEG and GSR Activity

In this study, field research was used to study the mental workload during the production process. The physiological signals of electroencephalogram (EEG) and Galvanic Skin Response (GSR) were recorded by using NeXus-10 equipment. The novices yielded significantly larger mental workload than veterans in the right hemisphere for theta, SMR, beta and gamma band. To investigate whether the given process activated both the left and right brain in a balanced manner, we calculated asymmetry index. Novice group yielded higher asymmetry index than veteran group for theta and SMR band. GSR was small higher which induced more negative emotions for the novice group than the veteran group. These would be used as new factors added into production system management
I'd rather know what to expect … Work unpredictability as contemporary work stressor with detrimental implications for employees’ daily wellbeing

ABSTRACT Particularly in knowledge-intensive jobs, employees are increasingly challenged by complex and dynamically changing work tasks. These developments make it difficult for employees to anticipate a day's upcoming work tasks and associated activities including methods, time requirements, and potential problems arising in the work process. We present three arguments why this work unpredictability represents a contemporary occupational stressor causing that affects employees until beyond working hours and is thus associated with lower daily wellbeing in the evening: Work unpredictability can be perceived as a lack of control at work, as a lack of mastery expectancies, and it might add high-effort planning and self-regulation demands to employees’ daily psychological workload. In a diary study with 105 employees, we collected 666 observations at three daily measurement occasions over two weeks. The results supported our hypotheses and demonstrated that work unpredictability relates negatively to evening serenity via employees’ elevated strain levels after work. These relationships were also found when controlling for time pressure as a representative of an established daily work stressor. We conclude that work unpredictability is a so far neglected work stressor that should receive more research attention in the future.
Buckling of the Steel Liners of Underground Road Structures: the Sensitivity Analysis of Geometrical Parameters

Designing a suitable, applicable and efficient support system for underground road structures have always been one of the most important engineering tasks for tunnel engineers. There are some different support systems applied to making underground structures safe against overburden and lateral pressures. Among these systems, permanent or temporary steel frames, wire meshes, rock bolts and shotcretes have been commonly used for suffering the exerted burdens and making the structure a safe place. This paper proposes a numerical analysis of the geometrical instability of steel-arch shells as one of the main bodies of underground road structure liners by means of calculating their buckling load and utilizing the finite element method. In this regard, a considerable number of structures (84) having different geometrical parameters have been modelled and their buckling loads have been calculated. For this purpose, the thickness, internal angle and radius of the periphery cylinder of the arch-shell system were considered taking into account geometrical parameters. Moreover, to accurately model the buckling load using the proposed algorithm, the weight of the structure has also been included in the made calculations. Finally, as the main scope is based on the Cosine Amplitude Method, sensitivity analysis is carried out to investigate the strength of the relationship between each input geometrical parameter and their buckling load. Based on the obtained relationships, the thickness of the structure is reported as the most affective geometrical parameter on buckling steel arch-shell support systems. In addition, the internal angle of arch supports is the least influential parameter.
Opportunities and challenges for addressing variations in the use phase with LCA and Design for Sustainable Behaviour

For Life Cycle Assessment (LCA) studies of products where the use phase is responsible for a large share of the total environmental impact, variations in the way the products are being used may have a significant impact on the results. The purpose of this paper is to investigate how a better understanding of the use phase, and possibly techniques and experience applied in Design for Sustainable Behaviour (DfSB), may contribute to the way LCA deals with uncertainties related to variations in the use phase. To inform the investigation of how variations in the use phase are dealt with in the LCA literature today, three previously published LCA studies are analysed. Among these studies, there is a clear variation in where the (limited) attention given to this uncertainty is directed to, and how this is done. Improving the understanding of the potential variations and thereby the ability to take them into account in the LCA may require additional measurements. For situations where limited resources make extensive real-life user studies problematic, a small-scale approach is suggested. The DfSB literature both contains insight into how a large number of user research methods best can be applied to investigate the environmental aspects of how people interact with products and a growing database of case studies that may contribute to reducing the uncertainty of the use phase in LCAs.
Analysis of slot antennas on a radial transmission line

Two methods for the analysis of slot-array radial-line antennas are presented. A moment method (MM) analysis is performed using a cosine basis function for each slot and the Galerkin method. The analysis can be extended to incorporate thickness of the metal plate supporting the slots. Closed form formulas are also derived to model the slot antenna as a multiport network. This model allows a faster antenna analysis when a large number of slots are present. The multiport model has been validated with the MM analysis in a two-slot case and through the measurements of a more complex antenna problem. © 1996 John Wiley & Sons, Inc.
Layout driven logic synthesis system

In a system level or logic level design process, the decisions made during early phases of the high level design have the greatest impacts on the performance of the final chip. However, these impacts will not be realised until very late in the physical design stage. In addition, it has been observed repeatedly that the most frustrating problem in IC design is to understand the relationship between the early phase decisions and the final layout result. It is therefore important, in logic synthesis to optimise a cost function which could relate the logic equation and the final layout performance. The authors develop a logic synthesis approach which relies on an accurate design evaluation program to estimate the final design attributes such as layout area and speed. Given a candidate design implementation, an evaluation program will be called upon to provide quick and accurate estimates of the layout area or critical path delay. This information will then be used as a feedback to the logic optimisation system. Based on this feedback, the system will 'reorient' itself toward a new direction for optimisation. Such a scheme represents a more realistic way of generating optimal layout implementations.
Compact Unequal Wilkinson Power Dividers using Planar Artificial Transmission Lines

A compact planar 4 : 1 unequal Wilkinson power divider using artificial transmission lines has been designed, fabricated and experimentally verified in this paper. Instead of adopting conventional quarter-wave microstrip transmission lines, artificial transmission lines realized by a series of meandered-line inductors, parallel-plate and interdigital capacitors are employed to implement an unequal power divider of the conventional Wilkinson topology. The proposed 4 : 1 unequal power divider occupies 52.1 mm × 28.1 mm, which is about 17% of a conventional one. The measured results of the power divider are in good agreement with the simulated ones. The measurements show that such a 4 : 1 unequal Wilkinson power divider at operational frequency ranging from 0.7 GHz to 1.1 GHz has a phase imbalance less than 4 degrees and power split between 4.06 and 4.3. The impedance matching at all ports exhibits in return losses more than 12 dB, and the good isolation between the two output ports is greater than 19 dB. Moreover, another example of a 2 : 1 unequal power divider with the same topology is presented to verify the widespread applicability of such a method using artificial transmission lines.