Miracle-dz/UniFAR-FTUs huggingface dataset:
Statistical loads data for Cessna 172 aircraft using the Aircraft Cumulative Fatigue System (ACFS)

Abstract : The purpose of this research and development program was to manufacture a small, lightweight, low-cost recorder for loads usage monitoring of general aviation and commuter type aircraft to support the Federal Aviation Administration (FAA) Operation Loads Monitoring Program. The scope of activities performed involved the following: (1) design, development, manufacturing and test of a low-cost Airframe Cumulative Fatigue System (ACFS), (2) installation of the ACFS into a fleet of seven Cessna 172 aircraft owned and operated by Embry-Riddle Aeronautical University, (3) conduct aircraft usage data acquisition on seven Cessna 172 aircraft, (4) define the effectiveness of ACFS in the data acquisition effort and any required design changes required for the ACFS, and (5) provide the resultant processed data from the data acquisition effort in formats useful to the FAA. Presented in this report are the description of the ACFS, the analysis and statistical summaries of the data collected from lOC flights representing 1168 hours of Cessna 172 aircraft operational data. The end product from the data acquisition effort includes statistical information on acceleration, speeds, altitudes, and flight duration and distance.
Introduction to Autonomous Mobile Robots

Mobile robots range from the Mars Pathfinder mission's teleoperated Sojourner to the cleaning robots in the Paris Metro. This text offers students and other interested readers an introduction to the fundamentals of mobile robotics, spanning the mechanical, motor, sensory, perceptual, and cognitive layers the field comprises. The text focuses on mobility itself, offering an overview of the mechanisms that allow a mobile robot to move through a real world environment to perform its tasks, including locomotion, sensing, localization, and motion planning. It synthesizes material from such fields as kinematics, control theory, signal analysis, computer vision, information theory, artificial intelligence, and probability theory. The book presents the techniques and technology that enable mobility in a series of interacting modules. Each chapter treats a different aspect of mobility, as the book moves from low-level to high-level details. It covers all aspects of mobile robotics, including software and hardware design considerations, related technologies, and algorithmic techniques. ] This second edition has been revised and updated throughout, with 130 pages of new material on such topics as locomotion, perception, localization, and planning and navigation. Problem sets have been added at the end of each chapter. Bringing together all aspects of mobile robotics into one volume, Introduction to Autonomous Mobile Robots can serve as a textbook or a working tool for beginning practitioners.
Plucked Instrument Strings: A Combined Frequency - Time Domain Wave Approach to Investigate Longitudinal Forces at the Bridge Support

The transverse wave motion of strings in musical instruments is the predominant influence on the instrument’s radiated sound. However, longitudinal waves, generated by their coupling to transverse waves, can also give a noticeable contribution. The main goal of this thesis is to develop a computer model to help investigate and understand how longitudinal waves are generated and then juxtapose the obtained information with measurements made on a unique single stringed instrument. The model uses a frequency domain transverse wave approach followed by a time domain calculation of the transverse to longitudinal wave coupling. The instrument apparatus is made of wood and contains one single string stretched between two bridge points. The string and its base are completely separate from the plectrum, jack and key. This prevents measuring vibrations other than those of the string’s. A supplementary goal of the thesis is investigating plectrum, jack and string interaction during excitation. The transverse wave model appears to be accurate in comparison to measurements made on the measurement apparatus. Unfortunately, the same statement cannot be made about the longitudinal wave model because of a lack of good measurement data. Observations of transversal to longitudinal wave coupling and subsequent longitudinal wave forces are made by testing different inputs into the model.
Phase unbalance compensation in moving-coil type permanent magnet linear synchronous motor

The characteristics of the phase unbalance in a moving-coil type Permanent Magnet Linear Synchronous Mo- tor(PMLSM) for travelling the reciprocating trajectory are presented. The phase unbalance caused at end coils, such as deficiency and asymmetry of each phase EMF, is thoroughly investigated. Moreover, a compensating method that can minimize such phase unbalance by adjusting the mechanical air-gap length is proposed, and its effectiveness is verified in a practical application.
Bandwidth estimation and optimisation in rain faded DVB-RCS networks

Broadband satellite communication networks operating at Ka band (20-30 GHz) play a very important role in today’s worldwide telecommunication infrastructure. The problem, however, is that rain can be the most dominant impairment factor for radio propagation in these frequency bands. Allocating frequency bandwidth based on the worst-case rain fading leads to the waste of the frequency spectrum due to over reservation, as actual rain levels may vary. Therefore, it is essential that satellite systems include adaptive radio resource allocation combined with fade mitigation techniques to efficiently counteract rain impairments in real-time. This thesis studies radio resource management problem for rain faded Digital Video Broadcast-Return Channel via Satellite (DVB-RCS) networks. This research stems from taking into account two aspects in the bandwidth estimation and allocation process: the consideration of multiple rain fading levels; and the geographical area size where users are distributed. The thesis investigates how using multiple rain fading levels in time slot allocation can improve bandwidth utilisation in DVB-RCS return links. The thesis presents a mathematical model to calculate the bandwidth on demand. The radio resource allocation is formulated as an optimisation problem, and a novel algorithm for dynamic carrier bandwidth and time slots allocation is proposed, which works with constant bit rate type of traffic. The research provides theoretical analysis for the time slot allocation problem and shows that the proposed algorithm achieves optimal results. This thesis also studies Return Channel Satellite Terminals (RCSTs) geographical distribution effects on bandwidth demand and presents a novel mathematical model to estimate the maximum instantaneous bandwidth demand for RCSTs randomly distributed over a geographical area in a satellite spot beam. All the proposed algorithms have been evaluated using a novel simulation with historical rain data.
VEHICLE CHARACTERIZATION AND FUEL CONSUMPTION PREDICTION USING MAPS AND POWER DEMAND MODELS

A sample of 177 currently used Australian light duty vehicles have been dynamometer tested and averaged vehicle maps of fuel consumption and emissions are presented. These maps show emission rates and fuel consumption as a function of vehicle velocity and acceleration. The use of vehicle maps as a diagnostic tool to characterise vehicle behaviour is also demonstrated. A two–parameter vehicle power demand model is developed which predicts road (or dynamometer) vehicle fuel consumption, hydrocarbon and oxides of nitrogen emission rates for any desired velocity profile. For trips of moderate length (> 10 km) the fuel usage estimates are correct to within 2 per cent. Short trip estimates (I km or less) are correct to within 9 per cent. A power demand model correction matrix is presented which is used to predict fuel usage for short trips (100m or less). This matrix adjusts the basic power demand model for vehicle inefficiencies at low speed due to gear and automatic transmission losses.
The Fiber-Optic Gyroscope

Principle of the fibre-optic gyro reciprocity of a fibre ring interferometer backreflection and backscattering analysis of polarization non-reciprocities with broadband source and high-birefringence fibre transient related drift and noise truly non-reciprocal effects scale factor accuracy alternative approaches for the I-FOG applications and trends.
Safety of Older Drivers: A Study of their Over-Involvement Ratio

An analysis of reports of 660 two-car collisions from the records of an insurance company showed that car drivers of 60 years old and older are more apt to be considered liable in an accident than younger drivers. A comparison of accidents for which older drivers (60 yrs. and over) are responsible with accidents for which younger drivers (30–39 yrs.) are responsible showed that the former have problems of perception and decision making and that the latter have problems with speed.
Bootstrap for integer‐valued GARCH(p, q) processes

We consider integer‐valued processes with a linear or nonlinear generalized autoregressive conditional heteroscedastic models structure, where the count variables given the past follow a Poisson distribution. We show that a contraction condition imposed on the intensity function yields a contraction property of the Markov kernel of the process. This allows almost effortless proofs of the existence and uniqueness of a stationary distribution as well as of absolute regularity of the count process. As our main result, we construct a coupling of the original process and a model‐based bootstrap counterpart. Using a contraction property of the Markov kernel of the coupled process we obtain bootstrap consistency for different types of statistics.
Human Factors Guidelines for Road Systems: Collection A: Chapters 1, 2, 3, 4, 5, 10, 11, 13, 22, 23, 26

This report contains guidelines that provide human factors principles and findings for consideration by highway designers and traffic engineers. The guidelines allow the non-expert in human factors to more effectively consider the roadway user's capabilities and limitations in the design and operation of highway facilities. The following chapters are included in collection A: (1) Why Have Human Factors Guidelines for Road Systems? ; (2) How to Use this Document; (3) Finding Information Like a Road User; (4) Integrating Road User, Highway Design, and Traffic Engineering Needs; (5) Sight Distance Guidelines; (10) Non-Signalized Intersections; (11) Signalized Intersections; (13) Construction and Work Zones; (22) Tutorials; (23) References; and (26) Abbreviations.
An Application Security Assessment of Popular Free Android Applications

The number of applications for the Android platform found on Google Play is now over 1 million and there are over 1.5 billion downloads each month . With a low cost of entry the Android platform attracts developers many of which do not have the necessary competence or experience to develop secure applications. We assess 20 Android applications using a custom testing methodology based on the OWASP Mobile Project and look for common vulnerabilities. We decompile applications using Dare and review the source code manually as well as using static and dynamic analysis to look for vulnerabilities. We also evaluate existing vulnerability classifications and argue which ones are most fitting to apply to Android vulnerabilities for educational and research purposes. We then categorize our findings according to OWASP Mobile Top 10 and present mitigation strategies for each category as a whole. Finally, we argue the implications of the vulnerabilities to end-users.
Effect of Striga Species on Sorghum (Sorghum Bicolor L Moench) Production and its Integrated Management Approaches

Sorghum is the most widely cultivated cereal crop in the world, particularly in the semi-arid tropical region of the countries and is staple food crop for millions of the food-insecure people. However, number of biotic and abiotic factors are limiting sorghum grain yield. These constraints are: diseases, drought, soil fertility, and pests, notably parasitic weed striga species. Among biotic stress, striga weed species are one of the most biological constraints which cause yield losses and perturb food security and human welfares in the world. Striga is an important parasitic weed causing substantial economic losses in cereal and legume crop production in subSaharan Africa. Striga spps are obligate root-parasitic plants of the major agricultural cereal crops including sorghum, maize and millets in tropical and semi-arid regions of Africa, Middle East, Asia and Australia. Striga can cause severe to complete losses in crop grain yield. Production of cereal crops such as sorghum, maize, rice and millet is threatened by striga species in different parts of the world particularly in semi-arid tropics of Africa. The percentage of crop yield loss due to striga infestations depends on amount of striga seeds in the soil, distribution of rainfall, soil fertility and variety of cereal species grown. Striga species spend most of their life cycle underground and develop above ground for stem formation and flowering. Striga stands for the principal biological constraints of crop production than any other biological pests such as insects, birds, or plant diseases in Sub-Saharan Africa. Sorghum production in world is seriously constrained by both biotic and abiotic stresses. Among the biotic stresses is witchweed (Striga spp.), a noxious parasitic weed causing major damage in cereal crops. However, resistance through reduced germination stimulant production or altered germination stimulant composition provides a sustainable and most effective way for managing the parasitic weeds. Integrated striga management approaches such as a combined use of Striga resistant varieties and Fusarium oxysporum fsp. Strigae (FOS), a biocontrol agent of striga, is an option to control the parasite and to boost sorghum productivity. Understanding host gene action influencing striga resistance, with or without FOS treatment, is key to develop improved sorghum varieties with durable resistance and high yield. Varying levels of resistance have been identified and exploited in the breeding programs of several crops. Considerable efforts have been invested in breeding for striga resistance in cereals and significant progress has been made in the development of improved selection methods.
Greening operations: an investigation of environmental decision making

This PhD thesis belongs to three main knowledge domains: operations management, environmental management, and decision making. Having the automotive industry as the key sector, the investigation was undertaken aiming at deepening the understanding of environmental decision making processes in the operations function. The central research question for this thesis is ? Why and how do manufacturing companies take environmental decisions? This PhD research project used a case study research strategy supplemented by secondary data analysis and the testing and evaluation of a proposed systems thinking model for environmental decision making. Interviews and focus groups were the main methods for data collection. The findings of the thesis show that companies that want to be in the environmental leadership will need to take environmental decisions beyond manufacturing processes. Because the benefits (including financial gain) of non-manufacturing activities are not clear yet the decisions related to product design, supply chain and facilities are fully embedded with complexity, subjectivism, and intrinsic risk. Nevertheless, this is the challenge environmental leaders will face - they may enter in a paradoxical state of their decisions – where although the risk of going greener is high, the risk of not doing it is even higher.
Clinical results of cannulated screw internal fixation via direct anterior approach for femoral neck fractures in young adults: a retrospective study

Purpose: To investigate the effectiveness of open reduction and cannulated screw fixation via direct anterior approach (DAA) for the treatment of femoral neck fractures in young adults. Methods: The data from 43 young patients with irreducible femoral neck fractures who underwent this procedure from January 2013 to December 2017 were retrospectively analyzed. Garden's alignment index was measured after the operation and at the final follow-up to determine the reduction quality, and the Harris score was recorded at the final follow-up to assess hip function. Results: The average follow-up duration was 19 months (range, 12-31 months). Implant failure was observed in 3 cases and was associated with femoral neck shortening, and nonunion occurred in 2 patients. A total of 6 patients Exhibited features of avascular necrosis (AVN), four of whom (Ficat grade III) underwent total hip arthroplasty and two of whom (Ficat grade II) were asymptomatic at the final follow-up. There were no statistically significant differences in Garden's alignment index, as measured on X-ray radiographs, immediately after surgery and at the final follow-up. At the final follow-up, the mean Harris score was 82.41±14.06. The Harris score was considered excellent for 17 cases, good for 13 cases, fair for 3 cases, and poor for 4 cases. The rate of excellent and good outcomes was 81.1%. Conclusions: For cases of irreducible femoral neck fractures, open reduction and cannulated screw fixation via DAA can yield relatively good clinical outcomes.
Coordination of lower limb segments during obstacle clearance in healthy adults and pathological populations

According to the planar law of intersegmental coordination, when elevation angles of the thigh, shank, and foot are plotted for a gait cycle, they tend to create a loop which orients on a plane in 3-dimensional space. The main goal of this thesis was to use analysis techniques related to this law to gain a better understanding of how the central nervous system coordinates and implements anticipatory locomotor adjustments (ALAs) for stepping over obstacles in healthy and pathological populations. Study 1 examined general issues of normal ALAs, while study 2 related the timing and amplitude of segment motion with mechanical work by hip and knee flexor muscles. Studies 3 and 4, determined how impairments such as autosomal recessive cerebellar ataxia type-1 (ARCA-1) and a previous stroke respectively affect locomotor control. In healthy adults, phasing differences between adjacent segments were shown to be correlated to characteristics of the plane formed by the segment elevation angles and these phase differences changed systematically with increasing obstacle height. It was proposed that the CNS adjusts a basic locomotor pattern for environmental constraints by manipulating elevation angle phase differences between adjacent segments as well as elevation angle amplitudes. The follow-up study determined that as higher obstacles were cleared, leading limb thigh phase lead and trailing limb shank phase lag increased. The work done by the hip and knee flexor muscles influenced thigh elevation differently in the leading and trailing limbs and it was concluded that these muscles do not have simple specific roles in elevating and progressing the lower limb during locomotion. Instead, these muscle powers may result from elevation angle waveform control dynamics. When observing coordination in the ARCA-1 and stroke participants, plotted segmental elevation angle trajectories continued to covary on a plane. In the ARCA-1 participants, a larger phase difference between the thigh and shank segments was suggested to be a voluntary control mechanism to increase toe clearance over obstacles. In participants with a previous stroke, this phase difference was greater in the non-paretic limb which was interpreted as being necessary to elevate this limb in compensation for poor support by the paretic limb. The results of this thesis suggest mechanisms of segment elevation control to implement ALAs and highlights voluntary compensatory mechanisms in such control in pathological populations.
STAT -- A State Transition Analysis Tool For Intrusion Detection

This thesis proposes a new approach to representing computer penetrations and applies the approach to the development of a real-time intrusion detection tool. The approach, referred to as penetration state transition analysis, views a penetration as a sequence of state changes that lead a computer system from an initial prerequisite state to a target compromised state. State transitions are defined in terms of critical actions and assertions that describe the pre- and post-action states of the system. A state transition diagram, which is the graphical representation of state transition analysis, identifies precisely the requirements and compromise of a penetration and lists only those critical events that must occur for the successful completion of the penetration. The State Transition Analysis Tool (STAT) is an advanced rule-based expert system that analyzes the audit trails of multi-user computer systems in search of impending security violations. STAT represents state transition diagrams within its rule-base and uses them to seek out those state transitions within the target system that correspond to known penetration scenarios. Unlike comparable analysis tools that pattern match sequences of audit records to the expected audit trails of known penetrations, STAT rules focus on the effects that the individual steps of a penetration have on the state of the computer system. The resulting rule-base is not only more intuitive to read and update than current penetration rule-bases, but also provides greater functionality to detect impending compromises.
THIS IS LIGHT RAIL TRANSIT

This booklet was prepared by the Light Rail Transit Committee of the Transportation Research Board and first distributed at the Eighth Joint Conference on Light Rail Transit in Dallas, Texas, in November 2000 on the conference proceedings CD-ROM. The booklet discusses the definition of light rail transit (LRT), the origin of LRT, and North American LRT as we know it today. Also discussed are LRT infrastructure, rolling stock, and fixed equipment, followed by an examination of LRT operating experience in North America. Concluding comments concern the future of LRT, which appears to be one of continuing expansion in North America. Of 23 systems now in operation, 15 are actively extending or upgrading their lines. There are currently 8 future new systems in various stages of planning or design.
Uncongested Mobility for All: A Proposal for an Area Wide Autonomous Taxi System in New Jersey

This paper examines the feasibility of assembling a fleet of autonomous taxis (aTaxis) in the state of New Jersey to provide personalized, automated, direct, and demand-responsive transportation. Such aTaxis provide auto-like service where demand is diffuse in space and time while facilitating casual ridesharing to serve demand that happens to be correlated spatially and temporally. This casual ridesharing substantially improves transportation efficiency and eliminates congestion. A key component of this undertaking is the synthesis of the travel behavior of each of the roughly eight million individuals in New Jersey. This trip data can be used to inform a simulation of the servicing of travel demand. About two million trips are less than a mile and are readily served by walking and biking. The remaining thirty million trips are served by aTaxis. In the aTaxi system, a grid of quarter square mile pixels overlays New Jersey; each pixel contains an aTaxiStand to and from which passengers ride the aTaxi. Results show that denser locations during peak hours have substantial ridesharing potential that would correspondingly decongest roadways while delivering excellent mobility at reduced energy and environmental consequences.