Miracle-dz/UniFAR-FTUs huggingface dataset:
Numerical analysis of the unsteady cavitation shedding flow around twisted Hydrofoil based on hybrid filter model

Cavitation is a common phenomenon in components of fluid machinery and it may induce material damage and vibration. A more accurate and commercial turbulence model is required to predict cavitation. In this paper, we make a combination of filter-based model (FBM) and density correction method (DCM) to propose a new DCM FBM. Firstly, the new DCM FBM and the homogeneous cavitation model are validated by comparing the simulation result with the experiment of cavitation shedding flow around the Clarky hydrofoil and the filter size is determined as well. Then, the cavitation pattern cycle and shedding vortex structure of the twist hydrofoil experimented by Delft University of Technology were predicted using the DCM FBM. The predicted 3-D cavitation structures and development cycle of twist hydrofoil as well as the collapsing features show a good qualitative agreement with the high speed photography results. Numerical results show that the improved turbulence model could predict the cloud cavity evolution well, including the cloud cavity generation, shedding and dissipation. It is found that the re-entrant jet induced by the by adverse pressure gradient is the main reason to generate the cloud cavity shedding. The secondary shedding is also observed which is result from the combination of the radially advancing re-entrant jet and side-entrant jet simulated by the DCM FBM turbulence method.
Memristor-Inspired Digital Logic Circuits and Comparison With 90-/180-nm CMOS Technologies

Compact low-power devices with ultrafast processing speed are the fundamental building blocks for the development of the state-of-the-art logic systems and memristor prominently fulfills these demands and plays a major role in digital circuit design. In this work, design, implementation, and performance evaluation of memristor-based logic gates, such as NOT, AND, NAND, OR, NOR, XOR, and XNOR, and combinational logic circuits, such as adder, subtractor, and $2\times1$ mux, are presented via SPECTRE in Cadence Virtuoso. Herein, we propose an optimized design of memristor-based logic gates and combinational logic circuits and draw a comparative analysis with the conventional 180-nm complementary metal–oxide–semiconductor (CMOS) technology. The utilized memristor model is thoroughly validated with the experimental results of a high-density $\text{Y}_{{2}}\text{O}_{{3}}$ -based memristive crossbar array (MCA), which shows a significantly low values of coefficient of variabilities in device-to-device (D2D) and cycle-to-cycle (C2C) operation. The area, power, and delay calculated from these combinational circuits are found to be reduced by more than 71.4%, 40%, and 54%, respectively, as compared to the conventional 180-nm CMOS technology. The impact of multiple CMOS technology nodes (90 and 180 nm) on the power consumption at the chip-level logic circuit implementation has also been investigated. The adopted memristor-based design significantly improves the performance of various logic designs, which makes it area and power efficient and enables a major breakthrough in designing various low-power, low-cost, ultrafast, and compact circuits.
KIC 3240411 – the hottest known SPB star with the asymptotic g–mode period spacing

We report the discovery of the hottest hybrid B--type pulsator, KIC\,3240411, that exhibits the period spacing in the low--frequency range. This pattern is associated with asymptotic properties of high-order gravity (g) modes. Our seismic modelling made simultaneously with the mode identification shows that dipole axisymmetric modes best fit the observations. Evolutionary models are computed with MESA code and pulsational models with the linear non-adiabatic code employing the traditional approximation to include the effects of rotation. The problem of mode excitation is discussed. We confirm that significant modification is indispensable to explain an instability of both pressure and gravity modes in the observed frequency ranges of KIC\,3240411.
Classroom Voting Questions to Stimulate Discussions in Precalculus

Abstract Classroom voting can be an effective way to stimulate student discussions. In this pedagogy, the instructor poses a multiple-choice question to the class, and then allows a few minutes for consideration and small-group discussion before students vote, either with clickers, cell phones, or a non-electronic method. After the vote the instructor guides a class-wide discussion. Here we report on a study of precalculus voting questions that includes data from 25 classes taught by eight instructors at five institutions over the course of 7 years. The goal of this study is to explore ways of identifying the questions most likely to provoke good student discussions. We recorded the percentage of each class voting for each option on each question posed, a total of 851 votes. We have 60 questions on which we recorded the results from at least five classes. We identified the five questions with the most widely dispersed votes, a method that has a history of being helpful in identifying good discussion questions. We present these five questions here, four of which we found to be examples of questions which are particularly good at stimulating student discussions. We include notes about how we used the questions in class.
Sloshing And Scaling: Experimental Study In a Wave Canal At Two Different Scales

Sloshing model tests are the basis of any sloshing assessment for a new membrane LNG carrier project. The statistical pressure results have to be scaled to full scale in order to derive design loads. The approach for scaling is not obvious as multi-physics occur within the impacts. Experimental modeling is based on the Froude scaling assumption: if the forced motions at small scale are defined with a geometrical scale 1/λ and a time scale 1/√λ, the velocities in both fluids, liquid and gas, should be in Froude accordance at both scales. This is exact for the global flow but Braeunig et al., (2009) have shown that it is wrong locally during the sloshing impacts, even though the density ratio between the fluids are kept the same at both scales, because the speeds of sound in the model liquid and gas are not in Froude accordance with the speeds of sound of respectively LNG and natural gas. The study presented here is an experimental attempt to show evidence of this socalled compressibility bias of sloshing experimental modeling. Performing sloshing tests with model tanks at two different scales would have led only to a statistical comparison of the impact pressures. In order to have a direct deterministic comparison of Froude-similar liquid impacts on a wall at two different scales, the study deals with single breaking waves in a laboratory wave canal at two different scales referred to as scales s1 and s1/2. After describing the experimental set-up and the breaking wave generation process, the paper shows the difficulties to reproduce accurately local developments of the impacts and the significant consequences of light discrepancies on the pressures. At the end the study describes how a relatively good similarity between flows at the two scales is obtained. A global analysis shows the general trend of the scaling for the pressures inside gas pockets.
Performance of mung bean as influenced by different levels of fertilizers and cropping systems in the semi-arid region of India

Mung bean being a leguminous crop is helpful in improving the soil properties. Since it is a pulse crop, it is deprived of proper fertilization. Hence, the study was aimed to determine the best fertilizer combination and cropping system for mung bean production. The experiment comprised eight treatments and three replications arranged in a split-plot design. The results revealed that yield components, namely, number of pods/plant, number of seeds/pod, 1000 seed weight, stover yield, seed yield, and biological yield in sole mung bean were significantly higher when mung bean is grown as an intercrop. While in the case of different fertilizer levels, the treatment with the combination of nanofertilizers and NPK fertilizers produced higher yield attributes than all other treatments. In contrast, the control (no fertilizer) produced lower yield characters. The study concludes that the combination of 50% recommended dose fertilizer + 50% nano NPK fertilizers + sole mung bean produced the highest yield and can be used for higher mung bean production.
Polymer Inclusion Membrane's 10% Copoly-EEGDMA-Containing Membrane's Lifetime and Optimization for Phenol Transport

In this research, Polymer Inclusion Membrane (PIM) was created using copoly-eugenol ethylene glycol dimethac - rylate (co-EEGDMA) 10% as a carrier, dibenzyl ether (DBE) as a plasticizer, and polyvinyl chloride (PVC) as the base polymer. Following that, the membrane was used in phenol transport experiments under a variety of circum - stances, including pH of the phenol in the source phase, NaOH concentrations in the receiving phase, and transport times. The ability and stability of the membrane were also evaluated under several influencing parameters such as plasticizer concentration, salt concentration, and PIM membrane age (lifetime). Phenol concentration was ana - lyzed using UV-Vis spectrophotometer, and PIM membrane was characterized before and after use using Fourier-transform infrared spectroscopy (FT-IR). According to the testing findings, phenol had an ideal pH of 5.5 in the source phase and a concentration of 34.07% in the receiving phase. Additionally, it was discovered that the ideal NaOH content in the receiving phase was 0.5 M with a phenol concentration of 58.24%. The experiments with varied transport times demonstrated that the optimum time was 48 hours with the phenol concentration of 90.82% in the receiving phase. The results of UV-Vis spectrophotometry analysis demonstrated that phenol transportation of 91.54% was achieved with the use of 0.3132 g plasticizer. Under ideal circumstances of pH 5.5 of phenol solu - tion in the source phase, 0.5 M NaOH concentration, and phenol transport time of 48 hours, a membrane prepared from PVC as a base polymer, 10% co-EEGDMA as a carrier, and DBE as a plasticizer can be used to transport phenol. The membrane’s stability was only 24 days when no NaNO 3 salt was added, but it grew to 108 days when 0.01 M NaNO 3 salt was added.
Types of EMG Textile Electrodes: A Comparative Study Using PCA

: Identifying a suitable textile electrode that would be durable and assist in recording high-quality bio-signal quality is crucial in the production of medical devices. Therefore, this study is aimed at comparing the time domain characteristics of silver-plated-polyamide-embroidered cotton (SPEC), copper-nickel-plated polyester (CNP), and stainless-steel-fabric (SSF) dry textile electromyography (EMG) electrodes through principal component analysis (PCA). The standard silver/silver chloride (Ag/AgCl) gel electrode was considered as the reference for all the test textile electrodes mentioned above. The EMG signal was measured by activation of the bicep and tibialis anterior muscles, and the time domain features such as root mean square (RMS) voltage, average rectiﬁed value (ARV) voltage, signal to noise ratio (SNR), kurtosis, and skewness were extracted from the EMG signal. The SSF electrode outperformed CNP and SPEC electrodes. Each textile electrode exhibited signal-to-noise ratio (SNR) values comparable to that of the standard electrode. The SNR values were 24.38 dB, 17.72 dB, 15.55 dB, and 13.30 dB for Ag/AgCl, SSF, CNP and SPEC electrodes, respectively. The performance of all the conductive textile electrodes was comparable to that of Ag/AgCl. However, the gel electrode required skin preparation and exhibited short-term stability, whereas, textile electrode materials were long-lasting and could be used for biological signal monitoring at home without the assistance of medical professionals.
Toward Optimal DoF Maximization With Interference Categorization Using TIM and SIC

In this paper, a novel topological interference management (TIM) framework, combined with the successive interference cancellation (SIC) technique, is proposed for Device-to-Device (D2D) networks. While the TIM problem was originally studied in a partially connected network, the main contribution appears here in proposing a novel design that allows some interfering links to be very high so that SIC can be used to handle them efficiently. More specifically, this inter-twinning between the two techniques (TIM and SIC) is based on the design of the precoding and decoding vectors used by the transmitters and receivers, respectively. This scenario of having very strong interference may occur in crowded D2D networks, such as malls, concerts or stadiums, where D2D communications take place in very close proximity. The problem is formulated as a rank minimization framework and solved by building on the characteristic polynomial function (CPF) of the adjacency matrix of the network interference graph. Numerical results show the effectiveness of our approach by achieving promising gains in terms of degrees-of-freedom (DoF), as compared to existing solutions, with a polynomial complexity.
Physical and Thermal Properties of Potato Flour as Influenced by Moisture Content

The physical, thermal and flow properties (flowability) of potato flour from Kufri-Chipsona, Kufri Sinduri and Kufri Badshah varieties produced in West Bengal, Rajasthan and Bihar states were evaluated. Moisture content was the important variable affecting these properties. Within moisture ranges of 7.04 % to 56.25 % (d.b.) the bulk, tapped and true density and porosity significantly decreased with increase in moisture content of potato flour of each variety, and ranged from 350-690 kg.m-3, 640-1240 kg.m-3, 1510-1550 kg.m-3 and 54-71 %, respectively. Carr index and Hausner ratio ranged from 24.41-44.50 %, and 1.32-1.77, respectively. Thermal conductivity, specific heat and thermal diffusivity of the flours significantly (p<0.05) increased from 0.125 to 0.230 W.m−1.K−1, 0.092 to 0.124 mm2 . s-1 and 1.13 to1.76 MJ.m-3.K-1, respectively, when moisture content of flours increased from 7.04 % to 56.25 % (d.b.).
Selective thermal radiation at longitudinal optical phonon energy under geometric condition of metal-semiconductor mesa stripe structures

Selective thermal emission at approximately 284 cm−1 with a line width of 13 cm–1 at 628 K is obtained by heating the Au-GaAs mesa-type line and space structures. This emission demonstrates a characteristic polar radiation distribution of electric dipoles and a wavelength independent of the structure size or the direction of emission; thus, it is ascribed to thermally generated electric dipoles resonating with the longitudinal optical phonon energy. This dipole is formed by the interface polarization charges of metal-GaAs-metal stripes. These distinct features are different from the radiation properties of interface phonon polaritons or electronic systems such as intersubband transitions of quantum wells. It is estimated that the mesa height and GaAs space width ranging from hundreds of nanometers to several micrometers provide high generation efficiency of electric dipoles and resultant radiation at high temperatures.Selective thermal emission at approximately 284 cm−1 with a line width of 13 cm–1 at 628 K is obtained by heating the Au-GaAs mesa-type line and space structures. This emission demonstrates a characteristic polar radiation distribution of electric dipoles and a wavelength independent of the structure size or the direction of emission; thus, it is ascribed to thermally generated electric dipoles resonating with the longitudinal optical phonon energy. This dipole is formed by the interface polarization charges of metal-GaAs-metal stripes. These distinct features are different from the radiation properties of interface phonon polaritons or electronic systems such as intersubband transitions of quantum wells. It is estimated that the mesa height and GaAs space width ranging from hundreds of nanometers to several micrometers provide high generation efficiency of electric dipoles and resultant radiation at high temperatures.
Optimal Muskingum River Routing

The Muskingum method of river routing is well established and frequently used. An attempt is made to improve the method by optimal selection of the model parameters. The common linear Muskingum and the less common, nonlinear Muskingum models are considered. For a test case, the Muskingum model parameters are estimated using the conventional approach, using procedures suggested by other researchers, and using the new constrained optimization approach. The performance of each of these fitted models is compared to the others.
Deficiencies in the Scope of Developmental Stuttering Speech Plans

This paper briefly introduces the process of speech production, EXPLAN model and the scope of speech planning, reviews recent studies on speech planning scope for developmental stuttering, and expounds the defects of the scope of speech planning for developmental stuttering. The aim is to provide more direction for the research of stuttering theory and some reference for the solution of stuttering problem.
NORMALIZED WEIGHTED GEOMETRIC BONFERRONI MEAN OPERATOR OF INTERVAL ROUGH NUMBERS – APPLICATION IN INTERVAL ROUGH DEMATEL-COPRAS

This paper presents a new approach to the treatment of uncertainty and imprecision in multi-criteria decision-making based on interval rough numbers (IRN). The IRN-based approach provides decision-making using only internal knowledge for the data and operational information of a decision-maker. A new normalized weighted geometric Bonferroni mean operator is developed on the basis of the IRN for the aggregation of the IRN (IRNWGBM). Testing of the IRNWGBM operator is performed through the application in a hybrid IR-DEMATEL-COPRAS multi-criteria model which is tested on real case of selection of optimal direction for the creation of a temporary military route. The first part of hybrid model is the IRN DEMATEL model, which provides objective expert evaluation of criteria under the conditions of uncertainty and imprecision. In the second part of the model, the evaluation is carried out using the new interval rough COPRAS technique.
Personality and Psychological Predictors of Instagram Personalized Ad Avoidance

The purpose of this paper is to apply the meta-theoretical model of motivation and personality (3M) of Mowen to study consumers' ad avoidance in the context of online personalized advertisements on Instagram. The current study developed a theoretical framework that links personality traits with reactance arousal and ad avoidance behaviours. Based on the data analysis, it was found that consumers with higher general self-efficacy tend to have more reactance arousal (situational level trait) compared to ad irritation, ad skepticism (surface traits), and ad avoidance behaviours towards personalized advertising on Instagram. The findings will help advertisers and marketers in segmenting the market better based on young users' efficacy levels, navigational habits, personality traits, functional motives, and demographic variables to effectively reach the targeted consumers.
Short-course neoadjuvant FOLFIRINOX versus upfront surgery for resectable pancreatic head cancer: A multicenter randomized phase-II trial (NORPACT-1).

LBA4005 Background: Fluorouracil, leucovorin, irinotecan, and oxaliplatin (FOLFIRINOX) has shown improved survival in metastatic pancreatic cancer, and promising results as downstaging chemotherapy in locally advanced pancreatic cancer. The efficacy of neoadjuvant FOLFIRINOX in patients with resectable pancreatic cancer is unknown. Methods: This is a randomized phase II trial with patients included from 12 Nordic centers in the period 2017-2021. Patients with resectable pancreatic head cancer were randomly assigned to receive either four neoadjuvant cycles of FOLFIRINOX followed by surgery and eight adjuvant cycles mFOLFIRINOX, or upfront surgery and adjuvant mFOLFIRINOX (12 cycles). The primary endpoint was overall survival at 18 months after date of randomization (intention-to-treat [ITT]). Overall survival was estimated with the Kaplan-Meier method, and differences between the respective treatment arms were analyzed with log rank tests. Results: In NORPACT-1, 140 patients were randomly assigned (neoadjuvant chemotherapy, n=77;upfront surgery, n=63). Median age was 66.5 years (IQR 59, 72), while 115 (82.1%) and 25 (17.9%) patients were ECOG 0 and 1, respectively. Median OS by ITT was 25.1 months [95% CI 17.2-34.9] with neoadjuvant chemotherapy and 38.5 months [95% CI 27.6-not reached] with upfront surgery (p=0.096). The proportion of patients alive at 18 months by ITT was 59.7 % [95% CI 48.9-70.7] and 73.0 % [95% CI 62.0-84.0], respectively (p=0.100). Resection rates were 81.8% (63/77) in the neoadjuvant group and 88.9% (56/63) in the upfront surgery group (p=0.342). In the neoadjuvant group 61 (79.2%) patients initiated neoadjuvant FOLFIRINOX. Completion of the four planned cycles was 60%, with dose reductions and delays in 70% and 28.3%. Per-protocol (PP) analysis of 60 patients with pancreatic ductal adenocarcinoma (PDAC) who received minimum one cycle neoadjuvant FOLFIRINOX compared with 55 patients in the upfront surgery arm who were explored showed median OS of 23.0 months [95% CI 16.2-34.9] and 34.4 months [95% CI 19.4-not reached] (p=0.158). Adjuvant chemotherapy initiation rate was 66.2% and 74.6% (p=0.282) by ITT. In resected PDAC patients the rate was 86.4% and 89.8% (p=0.593). Of 120 patients receiving at least one dose of neoadjuvant and/or adjuvant chemotherapy (safety population), 57.5% (42/73) in the neoadjuvant group and 40.4% (19/47) in the upfront surgery group experienced at least one grade ≥3 adverse event (p=0.067). In PP analysis neoadjuvant FOLFIRINOX was associated with significantly higher rate of N0 (p=0.002) and R0 resection (p=0.011). Conclusions: Neoadjuvant FOLFIRINOX did not improve OS compared with upfront surgery in resectable pancreatic head cancer. Our results do not support neoadjuvant chemotherapy as standard of care for these patients. Future trials should incorporate a biomarker-based design. Clinical trial information: NCT02919787 .
Robust diffusion recursive adaptive filtering algorithm based on l p -norm

A robust diffusion adaptive filtering algorithm, called the diffusion recursive least l p -norm (DRLP), is developed for distributed estimation over network. The new algorithm aims at recursively minimizing the l p -norm of error, and can offer a more stable and robust solution than traditional adaptive filtering schemes based on minimization of the squared error, such as the diffusion recursive least squares (DRLS) algorithm. Simulation results show that the proposed DRLP can outperform several state-of-the-art methods especially when the network is disturbed by impulsive noises.