Miracle-dz/UniFAR-FTUs huggingface dataset:
Modelling Pore Structure of Cement Based Material According to Continuous Network System

In this study, a modified pore structure of cement based material with respect to a path for ingressive ions was established. Of pores in a concrete, gel pores and other entrapped air voids were excluded from modelling the pore structure as no interests are given due to the ions immobilization of cement paste media. To setup the pore structure, the linear traverse method (LTM) was used to distribute air voids along the traverse line in a hexahedron cement paste structure, followed by including entrained air voids to fill up the least space of the cement matrix and making a network of the air voids through capillary pores at the variation in the diameters. Then the mercury intrusion porosimetry (MIP) was used to iteratively approach an accordance rate with calculated one from the above way to get into appropriate convergence value. As a result, for the OPC specimen the developed model shows a somewhat relevant value of 42.4 % of the accordance rate compared to empirical one and 64.24 of the ratio of ionic path to original distance within a concrete.
Geographical clustering of Hantavirus isolates from Apodemus agrarius identified in the Republic of Korea indicate the emergence of a new Hantavirus genotype.

AIM AND METHODOLOGY Several studies on hantavirus evolution have shown that genetic reassortment plays an important role in the evolution and epidemiology of this disease. To understand the genetic epidemiology of human hantaviruses, samples from rodent reservoirs were subjected to reverse-transcription nested polymerase chain reaction (RT-N-PCR) targeting the L- and S-segments of the hantavirus genome. RESULTS Positive isolates from Gwangju, Boseong-gun (Jeollanam-do Province), and Jeju Island were confirmed as Hantaan virus using DNA sequencing. Phylogenetic analysis showed that all isolates grouped together as Hantaan virus but with each region forming a distinct cluster. In addition, these three clusters were distinct from other Hantaan isolates reported in previous studies from Korea and its neighboring countries China and Russia. CONCLUSION This suggests Hantaan viruses exhibit a considerable degree of geographical clustering, and there may be a novel Hantaan genotype in southwestern ROK. This study helps expand our knowledge regarding the emergence of new hantavirus strains and their degree of geographical variation. IMPORTANCE Hantaan virus, a pathogenic prototype hantavirus carried by Apodemus agrarius, is found throughout China, Russia, and Korea. Here, we examined the genetic diversity of hantaviruses to expand our knowledge regarding the emergence of new hantavirus strains and their degree of geographical variation. We found that hantaan viruses show a considerable degree of geographical clustering, which may allude to the development of a new genotype variant in the southwestern region of the ROK.
Optimization of a Single-Slotted Lined Flap for Wing Trailing-Edge Noise Reduction

Nomenclature A = sectional area, m ~ A = nondimensional surface admittance, aca=Z B0 = acoustic stagnation enthalpy, m s 2 C = spanwise correlation parameter Cd = liner resistance nondimensional orifice discharge coefficient ca = ambient speed of sound, ms 1 d = liner orifice diameter, m g = airfoil response function h, h1, h2 = two-degree-of-freedom liner cavity depths (h1 h2), m i = imaginary unit, 1 p
Desempenho agronômico de linhagens e cultivares de feijão comum na região do ecótono Cerrado/Pantanal

O feijão tem sido amplamente cultivado em todo o território brasileiro. No entanto, baixos índices de produtividade têm sido obtido com o cultivo de muitas cultivares disponíveis no mercado, deste modo, o uso do melhoramento genético pode ser uma tecnologia para desenvolver cultivares de feijão mais produtivas e adaptadas às condições específicas de cada região brasileira. O objetivo do estudo foi avaliar as características agronômicas e a reação às doenças em 19 genótipos de feijão comum, do grupo comercial Carioca, entre linhagens e variedades comerciais, para se obter informações sobre os genótipos com melhor potencial produtivo na região de Aquidauana, MS. O experimento foi conduzido durante a safra da “seca”. O delineamento experimental adotado foi em blocos casualizados, com três repetições e 19 tratamentos (cultivares Pérola e BRS Estilo e as linhagens BRS CNFC 10429, BRS CNFC 10762, CNFC 15003, CNFC 15010, CNFC 15018, CNFC 15023, CNFC 15025, CNFC 15033, CNFC 15035, CNFC 15038, CNFC 15049, CNFC 15070, CNFC 15082, CNFC 15086, CNFC 15097, CNFC 15001, CNFC 15044). Os genótipos foram avaliados quanto aos caracteres: Dias para o florescimento (DFL); Dias para a maturação fisiológica (DMF); Altura de planta (APL); Número de vagens por planta (NVP); Número de grãos por vagens (NGV); Massa de 100 grãos (MCG); Produtividade de grãos (PROD) e Incidência de doenças. Os genótipos Pérola, BRS CNFC 10429, CNFC 15086, CNFC 15082 apresentaram-se mais produtivos e adaptados para a região do ecótono Cerrado-Pantanal de Mato Grosso do Sul, e todos se mostram susceptíveis ao crestamento bacteriano.
Generalised single-phase p-q theory for active power filtering: simulation and DSP-based experimental investigation

The single-phase p-q theory for the purpose of active power filtering in the case of single-phase loads is dealt with here. A simple modification is proposed to develop a generalised single-phase p-q theory that can be utilised under the condition of distorted utility voltage. A systematic study is presented by realising both direct and indirect current control techniques. The simulation as well as the digital signal processor (DSP) (DS1104 of dSPACE) based experimental results are discussed. The developed single-phase shunt active power filter (APF) prototype is tested under different operating conditions with different loads to evaluate the full capabilities of the proposed generalised theory for practical uses. The shunt APF reduces the source current total harmonics distortion (THD) from 27.2 to 3.4% under a distorted supply voltage with a THD of 16.2%.
Aggrandisement: Helping Micro-Enterprise Owner-Managers Construct Credibility in the Recorded Music Industry

ABSTRACT In this paper, we are interested in understanding the role of aggrandisement in the construction of identity within a creative industry. Our empirical data is based on interviews and observational data from thirty-six respondents in twenty firms from the music industry. Through our analysis we seek to explain how aggrandisement can be “externally directed” towards others to construct a professional reputation of competence and importance while portraying cultural relevance and expertise. Or, “internally directed” in order to build a positive illusion of oneself as a competent and worthwhile participant in the industry. Ultimately our research contributes to the reasoning behind personal reputation and confidence building in professionals in the music industry.
NON-LINEAR SLIDING MODE CONTROL OFWHEELED MOBILE ROBOT WITH THE PRESENCE OF DYNAMIC UNCERTAINTY AND TIME-VARYING DISTURBANCE

This paper suggests a scheme for trajectory tracking on a two wheeled mobile robot using integral sliding mode control method in the presence of external disturbances and inertia uncertainties. In this study the modified adaptive sliding mode controller for nonholonomic wheeled mobile robot is developed. Nonlinear control used to combine the kinematic and dynamic controller to follow the desired path. Firstly, the desired path is created. Secondly, the kinematic tracking controller used linear and angular velocities form reference model and feeds posture and velocities errors as input term in the sliding controller. Finally, the dynamic control was used to follow the path. Proposed control system is verified and validated using MATLAB\SIMULINK to track the required WMR trajectory and it is shown that the suggested system has better transient efficiency on different trajectories with acceptable steady state error.
International Journal of Emerging Electric Power Systems Effect of Control Parameters on Differential Evolution based Combined Economic Emission Dispatch with Valve-Point Loading and Transmission Loss

Differential evolution (DE) has been proved to be a powerful evolutionary algorithm for global optimization in many engineering problems. The performance of this type of evolutionary algorithms is heavily dependent on the setting of control parameters. Proper selection of the control parameters is very important for the success of the algorithm. Optimal settings of control parameters of differential evolution depend on the specific problem under consideration. In this paper, a study of control parameters on differential evolution based combined economic emission dispatch with valve-point loading and transmission loss is conducted empirically. The problem is formulated considering equality constraints on power balance and inequality constraints on generation capacity limits as well as the transmission losses and effects of valve point loadings. The feasibility of the proposed method is demonstrated on a fourteen-generator system. The results of the effect of the variation of different parameters are presented systematically and it is observed that the search algorithm may fail in finding the optimal value if the parameter selection is not done with proper attention.
Sliding Mode Control of Magnetic Bearing System Based on Variable Rate Reaching Law

In order to eliminate the chattering phenomena caused by conventional sliding mode control (SMC) method in magnetic bearing system control, this paper proposes a variable rate reaching law approach based sliding mode controller to achieve higher system stability and robustness. In this control law, system states’ normal numbers are brought in to automatic adjust the gain of the switching control part of SMC. The controller output amplitude of chattering can be progressively damped, and the system will converge to zero asymptotically. The system stability is proved by Laypunov theory, and the prerequisite of control law parameters design is deduced out. Simulation results show that the proposed SMC control method has effectiveness in dynamic suspension position tracking performance and obtaining system robustness.
Electronic beam steering using switched parasitic patch elements

A new technique is presented demonstrating the use of switched parasitic elements in electronic beam steering applications. Experimental and theoretical results are presented for a linearly polarised five element steerable patch antenna array operating at 1.55 GHz. Shorted parasitic elements have been used to steer the beam in two directions for tracking polar orbiting satellites. The minimum gain of the system for elevation angles >20/spl deg/ above the horizon is -1.5 dBi in the forward direction.
Collapse study of thin-walled polygonal section columns subjected to oblique loads

Abstract The present paper deals with the collapse simulation of aluminium alloy extruded polygonal section columns subjected to oblique loads. Oblique load conditions in numerical simulations are applied by means of impacting a declined rigid wall on the tubes with no friction in this task. The explicit finite element code LS-DYNA is used to simulate the crash behaviour of polygonal section columns that are undergoing both axial and bending collapse situations. In order to validate LS-DYNA results the collapse procedure of square columns is successfully simulated and the obtained numerical results are compared with actual available experimental data. Mean crush loads and permanent displacements corresponding to load angles have been investigated, considering columns with square, hexagonal, octagonal, decagonal, and circular cross-sections. It is shown that the octagonal cross-section has better characteristics from the point of view of vehicle crashworthiness under oblique load conditions.
Optimal replacement policy and the structure of software for condition‐based maintenance

States that the concept of condition‐based maintenance (CBM) has been widely accepted in practice since it enables maintenance decisions to be made based on the current state of equipment. Existing CBM methods, however, mainly rely on the inspector’s experience to interpret data on the state of equipment, and this interpretation is not always reliable. Aims to present a preventive maintenance policy based on inspections and a proportional hazards modelling approach with time‐dependent covariates to analyse failure‐time data statistically. Presents the structure of the software, currently under develop‐ ment and supported by the CBM Project Consortium.
Open Editors: A Dataset of Scholarly Journals’ Editorial Board Positions

Editormetrics analyse the role of editors of academic journals and their impact on the scientific publication system. However, such analyses would best rely on open, structured and machine-readable data on editors and editorial boards, whose availability still remains rare. To address this shortcoming, the project Open Editors collects data about academic journal editors on a large scale and structures them into a single dataset. It does so by scraping the websites of 6.090 journals from 17 publishers, thereby structuring publicly available information (names, affiliations, editorial roles etc.) about 478.563 researchers. The project will iterate this webscraping procedure annually to enable insights into the changes of editorial boards over time. All codes and data are made available at GitHub, while the result is browsable at a dedicated website (https://openeditors.ooir.org). This dataset carries wide-ranging implications for meta-scientific investigations into the landscape of scholarly publications, including for bibliometric analyses, and allows for critical inquiries into the representation of diversity and inclusivity. It also contributes to the goal of expanding linked open data within science to evaluate and reflect on the scholarly publication process.
Miniaturized low‐loss Wilkinson power divider for RF front‐end module applications

A miniaturized low‐loss Wilkinson power divider was designed and fabricated using standard LTCC technology. Size reduction was implemented by folding the quarter‐wave transmission lines into tightly coupled meander lines. Parameters determining the electrical performance of the divider structure were analyzed using both circuit and full‐wave electromagnetic simulations. Scattering‐parameter measurements correlated very well with the simulations and demonstrated excellent RF performance and manufacturability. Insertion loss of 0.1 dB, return loss of 30 dB, and isolation of 27 dB were measured at the operation frequency. Furthermore, compared to a traditional ring‐type Wilkinson divider, an approximately 67% size reduction was achieved. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 660–663, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21436
International Journal of Emerging Electric Power Systems Novel Configuration of 60-Pulse Voltage Source Converter for STATCOM Application

The proposed voltage source converter is composed of a series double bridge converter with an auxiliary circuit. The auxiliary circuit injects DC voltage via the mid point of the double bridge converter. The injection ratio and frequency are chosen to convert the standard 12-pulse into 60-pulse configuration without PWM or increasing the number of bridges, thus the voltage and current harmonic can fulfill the THD limit without a conventional filter. The converter is operated under fundamental frequency for the main bridges, thus its switching lose is low. The converter can be widely used in the STATCOM and HVDC system. The paper describes the principles and control strategies of the proposed converter. The operational feasibility of the proposed converter is verified by computer simulation using the PSCAD/EMTDC package.
Design of a Switching Control Scheme for Uncertain Objects Based on PID-Type FNN and LS_SVMs

PID control schemes have been widely used for industrial process systems over the past several decades. Recently, by combining traditional PID method with modern intelligent control scheme, various control design methodologies have been proposed such as fuzzy PID, neural PID and PID self-tuning by pattern recognition. However, the serious problem here is that the controller parameters must be suitably adjusted according to the property of the controlled object, which often changes gradually. Many identification methods are introduced to cope with this problem, among which the neural network identification is widely used. Generally a static network cannot adequately approximate a dynamic system and the training speed of dynamic network is very slow while the convergence cannot be guaranteed. Moreover, if the range of system uncertainty is very wide, the control performance becomes quite conservative. In this paper, a kind of objects with the wide range of uncertainty is considered and a novel control scheme with switching structure is proposed. A PID-type fuzzy neural network(PFNN) is designed as the controller and optimized by offline quantum-behaved particle swarm optimization(QPSO) with chaos strategy and online error back propagation tuning. The least square support vector machines (LS_SVMs) are introduced to determine the suitable controller parameters by switching and identifying the controlled object. Finally, the simulation results show the feasibility and validity of the proposed method.
Computed Extinction Limits and Flame Structures of Opposed-Jet Syngas Diffusion Flames

This paper reports a numerical study on the extinction limits and flame structures of opposed-jet syngas diffusion flames. A narrowband radiation model is coupled to the OPPDIF program, which uses detailed chemical kinetics and thermal and transport properties to enable the study of 1-D counterflow syngas diffusion flames over the entire range of flammable strain rates with flame radiation. The effects of syngas composition, strain rate, ambient pressure, and dilution gases on the flame structures and extinction limits of H2/CO synthetic mixture flames were examined. Results indicate the flame structures and flame extinction are impacted by the composition of syngas mixture significantly. From hydrogen-lean syngas to hydrogen-rich syngas fuels, flame temperature increases with increasing hydrogen content and ambient pressure, but the flame thickness is decreased with ambient pressure and strain rates. Besides, the dilution effects from CO2, N2, and H2O, which may be present in the syngas mixtures, were studied. The flame is thinner and flame temperature is lower when CO2 is the diluents instead of N2. The combustible range of strain rates is extended with increasing hydrogen percentage and ambient pressure, but it is decreased the most with CO2 as the dilution gas due to the dilution effects. Complete flammability limits using strain rates, maximum flame temperature as coordinates can provide a fundamental understanding of syngas combustion and applications.
Evaluations of current control in weak grid case for grid-connected LCL-filtered inverter

For grid-connected inverters, switching harmonics can be effectively attenuated through an LCL-type filter. In order to suppress resonance and guarantee good performance, many strategies (e.g. active damping (AD), harmonic resonant control, repetitive control and grid feedforward) have been proposed. However, the wide variation of grid impedance value challenges system stability in practical applications. The aforementioned methods need to be investigated. This study evaluates the applicability of each part of the overall control in a weak grid case with the use of a stability criterion. It has been demonstrated that the feedback-based AD control can work well in a wide range of grid conditions. However, the resonant and repetitive control methods meet constraints. The grid feedforward method brings in an extra positive feedback path, and consequently results in high harmonics or even instability. Finally, a recommendation for system design has been presented. Simulations and experiments have been provided to verify the analysis.
Frictional Resistance between Cable and Saddle Equipped with Friction Plate

To increase the frictional resistance between a cable and saddle, a method using a horizontal friction plate is efficient. However, there is no precedent for its use on long suspension bridges. An experimental investigation is conducted using a test cable and saddle with a friction plate. The frictional behaviors under normal and seismic loads are considered. Even under such a violent variation of load resulting from an earthquake, the cable is no more liable to slip than under a normal load. Based on the experimental findings, an analytical model of the frictional mechanism is developed, and as an example, the model is used to analyze a suspension bridge. As a result, the mechanism is made clear, and a formula for the design overall frictional coefficient of the saddle with a friction plate and a seismic safety factor are proposed. They are adopted for the design of the Rainbow Bridge in Tokyo.
Efficient large-frequency-shifted three-wave mixing in low dispersion wavelength region in single-mode optical fibre

In a low-loss single-mode fibre pumped with a 1.3 ? m Q-switched Nd:y.a. g. laser, an injected weak (~ 1 mW) signal has been strongly amplified and mixed efficiently with the pump (~ 70 W) to generate new waves (? 1 W) at multiple wavelengths with total spectral range extended as wide as 660 cm? 1.
Semiconductor lasers for versatile applications from global communications to on-chip interconnects

Since semiconductor lasers were realized in 1962, various efforts have been made to enrich human life thorough novel equipments and services. Among them optical fiber communications in global communications have brought out marvelous information technology age represented by the internet. In this paper, emerging topics made on GaInAsP/InP based long-wavelength lasers toward ultra-low power consumption semiconductor lasers for optical interconnects in supercomputers as well as in future LSIs are presented.
Assessment of the construction process of the Cathedral of Tortosa

The development of new measurement techniques is changing the process of documentation and assessment of built heritage. An accurate planimetric basis is essential for the constructive evaluation of a building. This paper presents the methodology used in the geometric assessment of Gothic vaults in the Cathedral of Tortosa (Spain). The use of a Terrestrial Laser Scanner allows the assessment of the vaulting to a level of detail that has never been possible to achieve previously. The accurate identification of geometric deviations in the masonry can be combined with the information from primary sources, revealing new information about the construction process of the apse.