Miracle-dz/UniFAR-FTUs huggingface dataset:
Interlaboratory Comparison of Contrast Measurement

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Modeling Bacteria Movement in Livestock Manure Systems

ABSTRACT Acomputer program was developed to monitor bacteria movement from livestock manure sources. It follows fecal coliform and fecal streptococci as they move from the point of generation through various collection, storage, treatment and land spreading components of an operator's waste management system. The runoff hydrology component is generated from the CREAMS (Chemical, Runoff, and Erosion from Agricultural Management Systems) model. Local soil characteristics, topography and weather conditions are input to determine the runoff frequency, magnitude and duration. The user also inputs site specific data such as animal numbers, housing system, collection frequency, temperature, method of manure application, spread area, volume and frequency. It can be used to evaluate a farmstead's contribution as well as evaluate potential management practices which may be selected. While components of the model have been validated, the model as a whole is unvalidated.
An Equivalent Circuit Model for Ionic Polymer-Metal Composites and their Performance Improvement by a Clay-Based Polymer Nano-Composite Technique

Ionic Polymer-Metal Composite (IPMC) is a new class of polymeric material exhibiting large strain with inherent soft actuation. The observed motion characteristics of an IPMC subjected to an electric field is highly nonlinear. This is believed to be due primarily to the particle electrodes on the IPMC surface, which is inherently both capacitive and resistive due to particle separation and density. Knowing that the value of resistivity and capacity can be manipulated by the number of metal platings applied to the IPMC, the force response of an IPMC when subjected to an imposed electric field is due to the interaction of an array of capacitors and resistors along with ionic migration. In this effort we attempt to incorporate a capacitive and resistive model into the linear irreversible thermodynamic model. The advantages of using such a model are (i) the possible dynamic predictability of the material itself in connection with capacitive responses; and (ii) the realization of capacitive and resistive effect arising from the particle electrodes and the base polymer, respectively. The behavior of the proposed model can explain typical experimentally obtained values well. Also, an experimental effort to improve the properties of the base polymer was carried out by a novel nanocomposite technique. The experiment results on the current/voltage (I/V) curves indicate that the starting material of ionic polymer-metal composites (IPMCs) can be optimized to create effective polymer actuators.
Label-free detection of prostate cancer and benign prostatic hyperplasia based on SERS spectroscopy of Plasma

In this work, Surface-enhanced Raman spectroscopy (SERS) involving blood plasma was investigated; the objective was to determine whether this approach could distinguish prostate cancer with benign prostatic hyperplasia. The experimental samples were prepared by blood plasma mixed with the silver colloid over an aluminum plate substrate. A total of 14 SERS spectra for prostate cancer (PCa) and 14 spectra for benign prostatic hyperplasia (BPH) were successfully gathered from patients who came from Fujian Provincial Hospital. Difference spectrum analysis combined with the assignment of Raman bands indicated that there were subtle but distinct changes between prostate cancer (PCa) and benign prostatic hyperplasia (BPH), which could be related to the level of prostate specific antigen (PSA); because it has been reported that the level of PSA is increased in men who have prostate cancer compared with those with benign prostatic hyperplasia (BPH). To further make clear the difference of Prostate cancer (PCa) and benign prostatic hyperplasia (BPH), the spectral data was combined with multivariate analysis processes. Principal component analysis (PCA), as a spectral dimensionality reduction approach, and in conjunction with linear discriminant analysis (LDA) were employed to identify the samples, to build diagnostic algorithms. The leave-one-out cross-validation method was used to validate the diagnostic algorithms; the result showed that a sensitivity of 95.8% and a specificity of 100.0% which indicated can significantly differentiate PCa and BPH groups. In addition, we further verify the validity of the diagnosis algorithm based on PCA-LDA diagnosis algorithm by using receiver operating characteristic (ROC) curves. The results of experiment study suggest that SERS combined with PCA-LDA algorithms has great potential for clinical screening of benign prostate hyperplasia and prostate cancer.
The application of ultra-high-frequency partial discharge measurements to gas-insulated substations

This paper deals with the application of the ultra high-frequency method (UHF-method) for the detection of partial discharges (PD) in gas-insulated substations (GIS). First, a review of the GIS-relevant part of the theory of electromagnetic wave propagation in the UHF-range (300 MHz-3 GHz) is given. New information considering the attenuation due to reflections of UHF signals at spacers is presented. For the sensors used to pick up the UHF signals inside the GIS, a new description of an antenna valid in the UHF range is introduced. The second part of this paper presents measurements with the UHF method to compare the sensitivity to the conventional PD detection method according to IEC-270. Practical conclusions are drawn from these new results for the application of the UHF method for onsite testing and online PD monitoring of GIS.
Effect of Temperature, Concentration and Aggregation on the Rheological Behavior of ZrO2 – Avocado Oil Nanolubricant

The paper investigates the effect of dispersed ZrO2 nanoparticles on the rheological behavior of avocado oil. ZrO2 nanoparticles are added in three weight percentages and their effect on viscosity is measured on Anton par’s MCR 102 in accordance with DIN EN ISO 3219 international standard. The shear rates and temperatures are varied from 500 4000 s-1 and 40-100 OC respectively. The effect of low temperatures (20 OC to -20 OC) on the viscosity of oil is also evaluated designating the pour point and cloud point of the avocado oil. The addition of nanoparticles increases the viscosity of avocado oil and preserves the Newtonian behavior of oil at all particle fractions and temperatures. The Newtonian behavior of avocado oil and the nanolubricants are quantified by the Ostwald-e-Waale power law equation. The measured values of viscosity are correlated with the existing theoretical viscosity models and a disagreement between the two is observed. © 2020 Published by Faculty of Engineering * Corresponding author: M.S. Charoo Email: shaficharoo123@nitsri.net Received: 27 March 2020 Revised: 30 April 2020 Accepted: 5 June 2020
Adaptive Control for Steering Engine Fault of Ducted Fan UAV

For the steering engine fault of ducted fan UAV that may arise during the hovering, designing adaptive controller for attitude control. First, concentrating on modeling of the hovering state of ducted fan UAV, and getting the relationship between steering engine and attitude control. Then analyzing the impact of steering engine fault on the attitude control system basing on the control model. Finally, designing model reference adaptive controller basing on the fault model, so that the ducted fan UAV can maintain good attitude control if steering engine fault occurs during the hovering. Simulation results show that when steering engine fault occurs, the model reference adaptive controller can effectively inhibit the adverse effects brought by steering engine fault, so the attitude control system has strong adaptability and robustness.
Optimizer: IBM's Multi-Echelon Inventory System for Managing Service Logistics

IBM recently implemented Optimizer, a system for flexible and optimal control of service levels and spare parts inventory, in its US network for service support. It is based upon recent research in multi-echelon inventory theory to address the IBM network. The inherent complexity and very large scale of the basic problem required IBM to develop suitable algorithms and sophisticated data structures and required large-scale systems integration. Optimizer has greatly improved IBM's US service business. The implementation of Optimizer has made it possible to make strategic changes to the configuration and control of the parts distribution network. It resulted in simultaneously reducing inventory investment and operating costs and improving service levels. Most important, however, Optimizer has proven to be a highly flexible planning and operational control system.
A strain energy criterion for failure of floating ice sheets

A failure criterion for floating ice sheets under stationary loads is presented, based on the concept of strain energy per unit volume and the results of some 40 prototype loading tests. The practical requirement for a time-independent failure criterion for ice, which is a viscoelastic material and thus subject to creep, is noted. Existing failure criteria are reviewed and shown to be unable to handle many practical situations. Subsequently, the concept of strain energy per unit volume is formulated and shown to provide a satisfactory failure criterion under varied loading histories. Analysis of the test results indicated the existence of a distinct instant marking the onset of failure of a loaded ice sheet. Because the behaviour of a loaded ice sheet between this instant and the final breakthrough of the load is partially random, it is suggested that the former be used as the practical limit of safety.
Analysis of wideband multilayer patch antenna with two parasitic elements

The analysis of stacked patch antenna with two parasitic elements is presented. The antenna shows improved radiation and directivity by 6.57 dB when compared with single layer patch antenna. The bandwidth of the antenna is found to be dependent on various parameters such as h1, h2, and s. The proposed results are compared with the IE3D simulation and reported experimental results. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1397–1401, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24378
An assessment of the use of CARS for remote sensing

With the increased interest in controlling the manufacture of chemical weapons (CW) agents globally as well as the interest in controlling the development and spread of nuclear weapons has come a concomitant need for the development instrumentation which will allow for either remote or clandestine surveillance of potential production and transportation facilities. The ability to monitor the effluent of a suspected weapon`s production plant from distances on the order of kilometers would provide the basis for treaty verification or for intelligence gathering. A number of potential techniques for accomplishing these ends are currently under development. In particular a technique based upon identification of the constituents of a mixture based upon the vibrational spectrum obtained using Raman spectroscopy is under development. Because this approach has range limitation due to the frequency of light being used for interrogation other methods which can accomplish the same ends even more remotely are of interest. To this end, a review of the appropriate literature has been conducted and the results of this review with respect to the application of coherent anti-Stokes Raman spectroscopy (CARS) to the remote detection of chemicals of interest has been conducted. This study is more limited in scope than a detailedmore » developmental program which is currently being under taken by DESE Research, Inc. and is limited to the question as to whether CARS possesses adequate sensitivity to be used as a remote sensing technique. Since current interest in remote sensing centers around detection of CW production in conjunction with the recently signed international convention in this area, the detection of CW agents and simulants is given prominence in this discussion. The use of CARS for microscopic detection of such controlled materials, while not explicitly considered in this report, is a further application of the technology. « less
The nonstandard FDTD method for three-dimensional acoustic analysis and its numerical dispersion and stability condition

Recently, the present authors have applied the FDTD (Finite-Difference Time-Domain) method to acoustic problems. FDTD is one of the finite-difference methods in the time domain used in electromagnetic problems. However, in this method, phase errors cannot be neglected in a large-scale propagation analysis such as indoor acoustic propagation and they cause problems in the analysis. In order to reduce the phase error, Cole has invented the NS-FDTD (Non-Standard FDTD) method for electromagnetic problems. However, the numerical dispersion and stability condition are not described in Cole's paper. Also, the definition is given only for a cubic lattice. In this paper, an application of the three-dimensional NS-FDTD method to acoustic problems is attempted. Further, the method is extended to a rectangular lattice. The numerical dispersion and stability condition of the present method are derived. As a result, it is shown that the present method has much higher accuracy than the FDTD method. © 2002 Wiley Periodicals, Inc. Electron Comm Jpn Pt 3, 85(9): 15–24, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjc.1115
Fiber taper sensors fabrication with arbitrary profiles using a modified flame-brush approach

This work reports a method to fabricate fiber taper sensors with arbitrary profiles. It is based on the approximation of the desired taper profile function by a series of step functions. As a consequence, monotonic taper transition profiles can be constructed with a number of flame-brush passes, each one supposedly producing a stepwise uniform reduction of the fiber diameter. Differently from what is done in other methods, constant speeds in all the translation stages are used in the process. A non-symmetrical arbitrary taper profile was fabricated in a singlemode fiber to demonstrate the feasibility of the method.
Comparison of power losses, current and voltage stresses of semiconductors in voltage source transformerless multilevel inverters

The power losses, current and voltage stresses in semiconductor devices in voltage source transformerless multilevel inverters (VSTMLIs) topologies are unequal, depending on the switching states, the duty ratio, the levels of output voltage, the load power factor and the depth of modulation index. Non-uniform power loss profiles mean both unequal junction temperature and power rating in semiconductors. In this study, a comparison of power losses, current and voltage stresses in semiconductors of VSTMLIs is performed. Initially, the structural characteristics and operating principles of dominant VSTMLIs with sinusoidal pulse width modulation are analysed. Then, modifications of existing VSTMLIs and simplified multilevel topologies are proposed, which achieve a further reduction in switch count and power losses in semiconductors. The proposed modified circuitries are suitable for converting existing four-level VSTMLI topologies into five-level ones. This conversion is desirable, when a zero output voltage level under no-load conditions or low modulation indices should be obtained. Power losses in semiconductors are calculated analytically and then confirmed by simulation. A comparative presentation of profiles of power losses, current and voltage stresses in semiconductors of the examined VSTMLIs is analytically carried out. The obtained results are valuable for sizing and selecting the semiconductors in VSTMLIs.
Performance and protocol improvements for very high speed optical fiber local area networks using a passive star topology

Two random-access schemes for a multiuser very-high-speed optical data network based on a star topology are presented and analyzed. The protocols presented do not require any type of carrier sensing, and their performance is independent of a, the normalized propagation time of packets over the optical medium. This property is rather important when dealing with very-high-speed networks which result in high values of a, because the performance of the conventional carrier sensing schemes is poor under such conditions. The protocols outperform the corresponding algorithms of I.M. I. Habbab et al. (1987) for all values of system parameters. >
Acute kidney injury after coronary artery bypass graft surgery: a narrative review of causes, diagnosis, and prevention

Acute kidney injury (AKI) after coronary artery bypass grafting (CABG) is a common cardiac event associated with short and long-term consequences and occurs in 30–51% of CABG patients. AKI may be associated with many other factors and is also responsible for many other pathologies. An increased level of serum creatinine (SCr) after surgery is one of the signs of AKI that may occur more often during cardiopulmonary bypass (CPB) in susceptible individuals. Preparing preoperative checklists is a good practice for the prevention of AKI. Defining new opportunities and strategies of perioperative care is a useful procedure for decreasing the risk of AKI after cardiac surgery. Collecting more data on preoperative risk factors and improving the intraoperative practices may decrease the incidence of AKI in the aggregate population. In this review study, we are going to review the literature on the pathophysiology of AKI and introduce the discussion about the features of patients who are more at the risk of AKI than others.
Study on the Influence of Volute to Flow-Induced Noise in Centrifugal Pump

More and more attention has been attached on flow-induced noise of centrifugal pump in recent years because of strict environmental noise restrictions and demands of clients. In this paper, the role of volute impacted on flow-induced noise generation and propagation in centrifugal pump were summarized. The process of internal wave propagation was analyzed, and the transmission coefficient and loss of volute were calculated; In order to compare the effect of volute vibration on the sound field in a centrifugal pump, a hybrid algorithm based on CFD + BEM was adopted. The results reveals that: full reflection of sound wave occurs on the fluid-steel volute wall when the incidence angle is more than or equal to 13.8 °; otherwise a sound transmission appears; For onshore pumps, For onshore pumps the A-weighted sound transmission loss is more than 55dB under the condition that thickness volute is not less than 8mm; For submersible pumps, all-bottom sound below 3000Hz almost transmits to the outside field entirely; structure acoustic coupling between volute and the internal sound field influence little on directivity of sound field and the change of law, but structure vibration would average the sound pressure level in frequency.
Intelligent Distribution System Based on IOT Technology

The internet of things (IOT) technology is a rising technology which could collect , transport, process and share the relevant information of cargos by using radio frequency identification (RFID) technology, sensor net and detection technology, and intelligent technology. This paper first researches on the model of intelligent distribution. Then, it builds the intelligent distribution center by using IOT technology which has the technology of identifying cargos, storing and collecting information, net and intelligent technology. It can realize intelligent and automation in warehouse management and vehicles dispatch system, during which it could enhance distribution operation efficiency and the logistics distribution cost reduced.
Touristic Destinations’ Theme Determination for GIS Applications

This research aims to determine touristic destination’s theme (especially tourism activity theme) from the tourism web documents for geographic information system (GIS) applications, i.e. guiding the main interesting tourism activities to tourists. There are two major problems of the theme acquisition; tourism activity extraction and tourism activity generalization. Therefore, this research proposes of using Naïve Bayes Classifier to determine word co-occurrences between verbs and nouns with the tourism activity concept from web documents. Furthermore, this research also applies the fuzzy concept along with the imputation technique, to determine the tourism activity theme by generalizing the extracted tourism activity. The result of the tourism activity extraction shows successfully the precision and recall of 85% and 77%, respectively, with Mean Reciprocal Rank (MRR) of the tourism activity theme is 0.5.
Selling on Instagram: Factors that Determine the Adoption of Instagram Commerce

ABSTRACT The relevance of social networks in recent years has been demonstrated at the business level. However, selling through social networks and more specifically on Instagram constitutes an emerging field of knowledge. Instagram commerce is part of the new means of social commerce, in which various companies all over the world sell their products and services, and Instagram is the second most preferred social media platform globally. The aim of this research is twofold: on the one hand, to demonstrate the influence of social networks on the purchasing decisions of individuals by focusing more on Instagram commerce, and on the other hand, to analyze the factors that drive purchases in the context of the development of sales in social businesses, more specifically, on Instagram in Palestine. For this purpose, an experimental situation was developed in which users answered a survey after watching a video. From this survey, the present study obtained 200 valid responses. The research model is evaluated through structural equation modeling (SEM). Results reveal the huge impact of social networks on consumer purchase intention. In this sense, there are several factors that mediate the growth of sales in social commerce, particularly on Instagram. The research has important implications for the theory and practice of Instagram commerce.
Developed cascaded multilevel inverter topology to minimise the number of circuit devices and voltage stresses of switches

In this study, a novel structure for cascade multilevel inverter is presented. The proposed inverter can generate all possible DC voltage levels with the value of positive and negative. The proposed structure results in reduction of switches number, relevant gate driver circuits and also the installation area and inverter cost. The suggested inverter can be used as symmetric and asymmetric structures. Comparing the peak inverse voltage and losses of the proposed inverter with conventional multilevel inverters show the superiority of the proposed converter. The operation and good performance of the proposed multilevel inverter have been verified by the simulation results of a single-phase nine-level symmetric and 17-level asymmetric multilevel inverter and experimental results of a nine-level and 17-level inverters. Simulation and experimental results confirmed the validity and effectiveness performance of the proposed inverter.