Miracle-dz/UniFAR-FTUs huggingface dataset:
Design and placement considerations for propeller-type t-zero choppers

The author discusses factors to do with placement and running speeds of propeller-type t-zero choppers, as implemented at ISIS (on chopper spectrometers) and at LANSCE (on a reflectometer, chopper spectrometer and small-angle scattering instrument). In all cases, the purpose is to block the burst of high-energy neutrons that emanates from the source when the proton beam strikes the target, and still be fully open when the thermal neutrons of interest pass through the space occupied by the t-zero chopper. In general, roughly 30 cm of high-strength high-Ni alloy (like nimonic or inconel) is placed in the beam, and for background purposes, it is desirable to place the chopper as far upstream as possible.
Air Transport Pilots' Information Priorities for Surface Moving Maps

The use of a surface map display for operations on or near the airport surface (taxi out, takeoff, final approach and landing, taxi in) is expected to enhance safety. There is a lack of research, however, detailing how the airport surface should be depicted to air transport pilots during taxi operations. In order to address this question, an information analysis was conducted in which air transport pilots provided self-reported ratings of need for display elements found on current airport diagrams or made available on prototype surface map displays for operations on or near the airport surface. The ratings highlighted the value of presenting runway location and traffic information across all operational phases and showed the changing utility for display elements across different phases of operations. Comparison of the air transport pilot ratings with general aviation pilot ratings showed general agreement as to which display elements were of high value. Differences between the two groups were largely attributable to differences in the nature of operations.
Experiences from use of an LVDC system in public electricity distribution

Experiences from the field setup of utility grid low voltage DC (LVDC) distribution are discussed. LVDC distribution being a novel approach to public electricity distribution, a research platform is realised to enable practical studies. The goal of the setup is to combine the requirements of the fully functional LVDC system and a flexible research platform. The scope of the paper is to discuss experiences from first six months of continuous use of the setup. The paper focuses on comparing how expected and realised results meet and how the setup has been operating in real public network. On the other hand, design flaws and challenges are covered. Finally, future research tasks and the development of the setup towards LVDC smart grid are presented. (4 pages)
Bibliometrix analysis of information sharing in social media

Abstract Social media has evolved at a rapid pace, influencing every aspect of the global community. The purpose of this paper is to use bibliometric analysis tools to evaluate valid works on the relationship between social media and information sharing. A review study of research papers on social media and information sharing published between 2009 and 2020 was conducted. The bibliometric analysis identified the following characteristics: (1) the primary articles are based on information sharing through social media; (2) the main authors deal with information sharing in social media; (3) the newestrend topics related to information sharing in social media are demographic characteristics, cognition, sentiment, healthcare, products and services recommendations, tourist recommendations, and COVID-19. The results show significant impact rates in studies of information sharing in social media. Overall, this study serves as a basis for new scientific questions that will contribute to the further development of this research field.
A Method of Image Processing for Carrier-wave ESPI Based on Homomorphic Filtering

Based on the analysis of the principle of carrier-wave electronic speckle pattern interferometry(ESPI)which was applied to measure out-of plane displacement,a new method for processing the interrelated fringes was proposed.In this method,the technology of homomorphic filtering with band-pass filter was combined with twice Fourier transform.The result of experimentation indicated that the method not only could filter the high-frequency multiplicative noise effectively,but also could demodulate out-of plane displacement information and deformation information rapidly.It could be used to measure the dynamic out-of plane displacement and deformation.
Recent Progress in Implementation of ICME for Metallic Materials in the Airframe Industry

Integrated Computational Materials Engineering (ICME) can be applied to multiple problems in materials development within the airframe industry, but most deal with how to reduce the time from discovery to implementation. For a structural material to be considered for application on a new program, preliminary design properties must be made available. Of these, fatigue, fracture and corrosion testing require the most cost and effort, and hence, development of ICME technques to estimate values for related properties, whether from constitutive microstructural relationships, simple tensile data, or from continuum mechanics, remains a high priority. The present paper reviews progress since our 2012 AIAA paper reviewing metallic material ICME efforts, with a focus upon estimating durability and damage tolerance properties at an earlier point in the materials development cycle. Additional thoughts on progress and gaps in ICME for the aerospace business are also addressed.
Graphic Processes in Architectural Study Drawings

Concepts from contemporary critical analysis hold that all thought is inseparable from its medium of formulation and expression. When applied to design, such concepts argue that study drawings are active agents rather than passive records; their graphic processes provide the means to generate information within the design task. This paper analyzes characteristic graphic processes from Le Corbusier's work on the chapel at Ronchamp and from recent study drawings by five contemporary architects. This article has been excerpted from a forthcoming book on study drawings, a project supported in part by a grant from the National Endowment for the Arts. But where did Iget all ofthat? -Le Corbusier, upon returning to the hill at Ronchamp several years after the project had been completed.
Using Magnetic Barkhausen Noise Technology and Finite Element Method to Study the Condition of Continuous Welded Rails on the Darwin-Alice Springs Line

The Magnetic Barkhausen Noise (MBN) technology is a non-destructive method to measure the neutral temperature of the CWR track. A series of in-field verifications and data comparison on Australian mainline tracks have shown the results from that system are highly accurate and reliable. The system can be an accuracy and cost-effective tool to prevent the potential buckling and break of CWR rails. The physical backgrounds and features of the system are represented in this paper. The Darwin-Alice Springs Line is a newly constructed main line in Australia which is linked from the north and middle of Australia. Originally, this rail line is designed and constructed in a "cost-effective" way to a lower price, and the key parameters are relatively low. To maintain the stability of the CWR tracks in a very harsh environment, some new technologies such as the MBN technology were utilised. From the results of neutral temperature, it is found that the majority of them are very high. Combined with the calculation and finite element analysis, these problems evidenced that it is caused by the low toe load fastening system and high sleeper spacing. After that some suggestions are given to improve the stability of the CWR on the railway line.
Effect of plasma actuators on a flat plate laminar boundary layer in subsonic conditions

One of the objectives of the ONERA internal project PUMA (Plasmas Used to Master Aerodynamics), is to improve the knowledge of plasma actuators and to develop new concepts for modifying and/or controlling aerodynamic phenomena. In this paper we present an experimental approach to quantify the effect of cold plasma actuators on a laminar flat plate boundary layer in order to evaluate the effect on laminar to turbulent transition. The paper presents the experimental results obtained with two types of actuators, the generated ionic wind characteristics and the velocity profiles modified by this ionic wind. Moreover complementary information is given by hot wire measurement on the velocity fluctuations inside the laminar boundary layer.
TISSUE CULTURES OF XA DEN (EHRETIA ASPERULA ZOLLINGER ET MORITZI)

The suitable conditions for internode explant surface sterilization were alcohol 70% in 1 minute + javen 20% for 15 minutes + HgCl2 0.1% for 5. The most suitable medium for single node sprouting was MS medium supplemented with BA 0.5 mg/L and Kinetin 0.5 mg/L after three weeks of culture. MS medium supplemented with BA 0.1 mg/L was suitable for shoot height elongation and leaves after 3 weeks. Callus could be induced on the MS medium supplemented with BA 0.1 mg/L and NAA 0.4 mg/L after three weeks and were sub-cultured after two weeks to avoid browning. MS medium supplemented with BA 0.2 mg/L was suitable for shoot propagation and callus regeneration. The pH had a significant effect on single node sprouting and MS medium supplemented with BA 0.3 mg/L at pH 6.2 was the most favored for single node sprouting. Media of 1/2MS + IBA 0.1 mg/L was suitable for rooting. 1. PREAMBLE
Exposure to the Field and the Meanings Managers Hold: Evidence from Manufacturing Best Practices Programs

A central proposition of neo-institutional theory is that exposure to institutional fields shapes the meanings actors within the field hold. We test that proposition by asking whether variations in exposure to field-level processes will lead to variations in meanings held by actors. To do so, we examine the implementation of a managerial practice - Manufacturing Best Practices Programs - across a large sample of manufacturing sites in Australia and New Zealand. We assess exposure to field-level processes both indirectly (through structural characteristics such as site size and technological sophistication), and directly (as contact with theorizing agents and communities of practice). To assess variations in meanings held by managers, we draw on psychological research findings to do three things: 1) to conceptualize the cognitive representation of a practice as a category, 2) to recognise that categories are graded - that is, that some members (or components of the practice, in our case) are more representative of the category than others, and 3) to recognise that the grading of the category is driven by the way the category is theorized. We find that sites which are more exposed to field-level meanings - using both our direct and indirect measures - adopt, on average, more representative components in their Manufacturing Best Practice program. We discuss implications, especially for how categories are understood within institutional theory.
Unbalanced Current Static Compensator

The objective of this thesis is to present and evaluate a solution to the unbalanced current issue that can be found in three-phase electrical power grids. The solution is named unbalanced current static compensator (UCSC) and has the goal of balancing the currents at the source in order to mitigate adverse issues such as of negativeand zero-sequence currents that are generated by three-phase current unbalances. The solution topology consists of three single-phase H-bridge converters that are controlled through an algorithm working in the − frame of reference. The algorithm is divided in three different stages: the phase synchronization and reference current generator stage, the DC-link voltage and current controller stage, and the PWM stage. The design and functionality of the UCSC topology and algorithm is validated through MATLAB/SIMULINK simulations.
Structural Health Monitoring of a Steel Railway Bridge for Increased Axle Loads

Abstract A large proportion of the existing bridge infrastructure network are relatively old, past their design life and have much larger loads running on them than had been considered in their design. Predicting the present behaviour of these systems, given these increased loads, makes structural health monitoring imperative as a tool to assess the present condition and the safety of the remaining life. In this paper it is shown that using a short measurement period, that is representative of the repetitive load on the bridge, and correlating the estimated fatigue life with the annual tonnage could give good fatigue assessment without having to resort to a significantly more expensive continuous monitoring of the structure. A site-validated numerical model is built, which provides an estimate of the present condition. This model is then used to estimate the loads coming on the bridge during the measurement period. The loads are then correlated with existing traffic data to give an estimate of the annual traffic tonnage. Good estimates of the annual traffic tonnage using this method show that the measurement period is representative and hence increase confidence on the validity of the remaining life estimated.
1. Introduction

The heart of expert system is the knowledge base that determines the power of expert system and search engine space. The one important form of this knowledge is the production rule. The premises of these rules are the heart of production rules, therefore, the reduction of these premises is very useful to reduce the time and space in search engine. In this paper an approach will be presented to reduce the premises of production rules using association rules algorithm especially Apriori algorithm. Applying this approach gives a logical premise reduction which plays a good role in the search engine.
Design of five-phase permanent magnet assisted synchronous reluctance motor for low output torque ripple applications

This paper presents the design of five-phase permanent magnet assisted synchronous reluctance motor (PMa-SynRM) for integrated starter and generator (ISG) of hybrid electric vehicle with low torque ripple. When ISG works as starter in order to operate engine, PMa-SynRM produces 3 kW power at the rated speed of 1800 rpm with reduced vibration by multi-phase structure. PMa-SynRMs are similar to interior permanent magnet motors in structure but are more economical due to reduced permanent magnets. In this study, lumped parameter model (LPM) using magnetic circuit design is used in the approach to initially design the five-phase PMa-SynRM. Numerical equations are integrated with the LPM to design the machine with its given range of design parameter values. Thousands of designs are generated by LPM, which are then converged to optimised model using differential evolution strategy. In this study, optimisation is done with maximum efficiency and minimum torque ripple as objective. The optimised 3 kW five-phase PMa-SynRM is then analysed by finite element method for fine tuning. Simulation results for back electromotive force, flux linkage, developed torque, torque ripple, cogging torque, torque speed characteristics and d and q -axis inductances variation over respective axis currents are verified by fabricated prototype.
Life cycle optimization of envelope and mechanical systems for a single-family house in Quebec

The environmental impact of residential buildings has been demonstrated to be significant, and to be a result of both their construction and operation. This study therefore looks at the best strategies to minimize life cycle energy consumption (LCE), as well as cost (LCC), for a single-family house in Quebec. First, an optimization model for the envelope is built, and includes a detailed TRNSYS simulation which computes the operation energy use, embodied energy of material and cost data. It is coupled to GenOpt, a general optimization program, to find the minimum LCC and LCE values, using a Particle Swarm Optimization algorithm. The optimal envelopes and a code compliant envelope are then modeled with various combinations of space conditioning and domestic hot water systems, to evaluate the impact of energy efficient mechanical systems on cost and energy. It is shown that energy efficient mechanical systems are a better investment than envelope efficiency measures, from a LCC perspective. The optimal combination found is a minimal code compliant envelope with a ground-source heat pump and a desuperheater. These research results suggest that future building code improvements should also cover in detail the performance of mechanical systems, instead of focusing mostly on envelope characteristics.
Improved production and expanded application of CVS-N2c-ΔG virus for retrograde tracing

Neurotropic virus tracers, particularly those with low toxicity and high efficient tracing, are powerful tools for structural and functional dissections of neural circuits. The retrograde trans-mono-synaptic technology based on rabies virus CVS-N2c strain has reduced cytotoxicity and enhanced efficiency, attains long-term gene manipulation for functional studies, but suffers from difficult preparation and low yield. To overcome these shortcomings, an improved production system was established for rapid rescue and preparation of CVS-N2c-ΔG virus, CVS-N2c-ΔG with the same titer as SAD-B19-ΔG can be prepared within a short time. Meanwhile, we found that N2cG coated CVS-N2c-ΔG allows efficient retrograde access to projection neurons, and further expand its application in VTA/SNc to DLS pathway that unaddressed by rAAV9-Retro, and the efficiency is 6 folds higher than that of rAAV9-Retro. Then the trans-synaptic efficiency of CVS-N2c-ΔG virus was evaluated. Results showed that the trans-mono-synaptic efficiency of oG-mediated CVS-N2c-ΔG was 2-3 folds higher than that of oG-mediated SAD-B19-ΔG, but there was no difference between oG-mediated and N2cG-mediated CVS-N2c-ΔG system. In addition, codon modified N2cG (optiG) did not increase the efficiency of CVS-N2c-ΔG tracing. Finally, we found that the CVS-N2c-ΔG produced by the improved method can be used for monitoring neural activity of projection neurons, and the time window can be maintained for 3 weeks, and it can also express sufficient recombinases for efficient transgene recombination. That is, the virus produced by the improved production system does not affect its own function, paving the way for its further optimization, popularization and application in structural and functional studies of neural circuits.
AN OPTIMUM ANALYSIS AND DESIGN MODEL FOR AIRPORT APRONS

In order to reach an optimum analysis and design for airport aprons variables such as the area and dimensions of the apron considering the passenger and cargo, the number and dimensions of the gates depending on the different type of aircraft, parking configuration and the arrangement of aircraft in different time periods at the airport has been looked into carefully. In this research a mathematical model for the optimum analysis and design of airport aprons based on minimum transportation cost has been developed. The main parameters considered for transportation cost are user capital and operational costs. Based on these parameters, a mathematical model as well as computerized simulation software have been developed taking into consideration the actual variables of design and analysis of airport aprons. The results obtained from the computerized simulation software indicate that the policies of the airport authorities and air carriers within the context of flight scheduling, gate use strategy, planning and analyzing the operational condition of the aircraft fleet have a significant impact on the planning and design of airport aprons. Keywords– Airport, apron, optimization, design and analysis
A Novel Fingerprint Match Method Based on Minutia Triangular Acreage Technology

Recognizing fingerprints in poor quality images, direction changed, size different fingerprints and so forth is still a very complex job. To overcome these drawbacks, a fingerprint match method used minutiae-based triangular acreage is described here to improve matching accuracy. With the development of automatic machines, self-service, bank cards and internet shopping, the demand to identify people uniquely, safely and quickly is becoming the basic factor during social life experiences. The traditional methods, such as passwords and cards, cannot be trusted to establish a person's identity due to passwords or PIN can be calculated by hacker's interruption and cards can be stolen, lost or easily duplicated. In these cases, biometric recognition becomes the most attractable solution to above problems. Biometric traits, e.g., fingerprints, face, iris, ear, can provide unique characters of one person and cannot be easily stolen or shared compared with traditional security methods (such as key and password) (1). Due to their better security, convenience and easily recognized with the help of modern technology, they are deployed in a large amount in our daily life and are playing more and more important role in various security applications. Biometric is accepted as an essential component of effective person identification solutions because biometric identifiers intrinsically represent the individual's identity. Among these biometric traits, fingerprint has an overall desirable property when compares with others, such as easily accessible, permanent unchangeable and good recognition accuracy, and is becoming the most popular biometric trait. Fingerprints have been used for identifying individual from the ancient time. Historically, fingerprint recognition systems were mostly used in forensic sciences, and due to their strongpoint, such as uniqueness and permanence, fingerprint is among the most widely used biometric traits with a broad range of both government and civilian applications at present. In other words, fingerprints are a sort of identity card that people carry with them continuously. The current popularity of these systems is mainly focused on civilian applications such as building access systems,
Comparison of the Potentiating Effect of Variable Load Jump Squats on Acute Drop Jump Performance in Rugby Sevens Athletes

Abstract Poulos, N, Haff, GG, Nibali, M, Graham-Smith, P, and Newton, RU. Comparison of the potentiating effect of variable load jump squats on acute drop jump performance in rugby sevens athletes. J Strength Cond Res 37(1): 149–160, 2023—The effect of variable load jump squats (JSs) on acute drop jump (DJ) performance across multiple sets was examined. Seventeen elite rugby sevens athletes performed 3 DJs after 3 repetitions of a JS conditioning activity (CA) performed at 30 or 50% 1RM back squat loads. Acute postactivation performance enhancement (PAPE) in DJ kinetic and kinematic variables was assessed using a commercially available force platform (1,000 Hz). Postactivation performance enhancement was predominant after the 30% 1RM load with the greatest frequency of potentiation exhibited in set 3. The 50% 1RM CA resulted in substantial decrements in DJ performance with the exception of active stiffness, reactive strength index (flight:contact time), and contact time. Moderate differences were observed between the 50 and 30% 1RM loads for peak power (W), impulse (N·s), and force at zero velocity (N); active stiffness was the only variable where PAPE was greater in the 50% 1RM CA (ES: small). Active stiffness was the only variable to display favorable associations with relative strength in both the JS 30% 1RM (ES: 0.38 ± 0.20; moderate) and 50% 1RM (ES: 0.24 ± 0.23; small) CA loads. The JS 30% 1RM CA results in greater magnitude and frequency of PAPE of DJ kinetic and kinematic variables and is recommended if seeking to target PAPE in a range of DJ performance variables. Heavier JS loads may be appropriate if enhancement of muscle stiffness and stretch-shortening cycle efficiency is required. Consideration of targeted kinetic and kinematic variables when selecting CA intensity in complex training design is recommended.