Miracle-dz/UniFAR-FTUs huggingface dataset:
A Sensing and Computational Framework for Estimating the Seismic Velocities of Rocks Interacting With the Drill Bit

We have developed a sensing and computational framework to estimate seismic velocities of rocks interacting with the drill bit during the drilling process. The performance of drilling depends on our knowledge of the subsurface. The interaction between the drill bit and rock can introduce severe vibrations in the drill string and result in safety and performance issues. However, we can use seismic waves radiated from drill bit-rock interactions to determine seismic velocities of the rocks interacting with the drill bit. Our approach consists of a distributed (wave equation) representation of the dynamics of the drill string for which we show (using Riemann’s invariants and a backstepping approach) that it is possible to express the force-on-bit as a function of the top-drive force and the top-drive velocity, without requiring explicit information about the subsurface properties. We also show that seismic waves generated by drill bit-rock interaction can be modeled as functions of the force-on-bit and rock velocities. The rock velocity independent formulation of the force-on-bit, along with the modeling of the seismic waves generated by drill bit-rock interaction as a function of force-on-bit and rock velocities, allows us to estimate seismic velocities of rocks interacting with the drill bit. We use the alternating minimization algorithm to estimate the velocities. Numerical examples of simulated data are indicators of the validity of the approach. The proposed methodology is the first step toward a subsurface-aware drilling system.
Differences in responses to Wheat dwarf virus infection in contrasting wheat cultivars Ludwig and Svitava

The two contrasting cultivars, the very susceptible Ludwig and moderately susceptible Svitava, previously evaluated in field trials to determine their resistance levels to Wheat dwarf virus (WDV), were analysed by four different test methods to allow for the comparison of the methods and to consider whether the resistance level of cv. Svitava can be an effective component of wheat protection from the virus. The differences in the proportion of the diseased plants were observed after the inoculation by the viruliferous leafhoppers. The differences in the cultivar resistance levels were evaluated by comparing the biomass production after the infection. The amount of viral DNA was determined using quantitative polymerase chain reaction (PCR). Concurrently, the cultivar response to the virus infection after the controlled inoculation by the leafhoppers [Psammotettix alienus (Dahlbom, 1850)] under field conditions was further evaluated. The infected plants of cv. Svitava produced five times more dry matter in the vegetative growth stage than cv. Ludwig. The quantitative PCR analysis confirmed the resistance in cv. Svitava. The plant inoculation under a standardised infection pressure showed that the probability of the WDV infection after the inoculation feeding is smaller in the cv. Svitava plants. The comparison of the results from the different test methods shows that the field resistance tests are necessary to obtain a proper assessment of the possibilities for the cultivars’ utilisation in the crop protection.
Accelerated ADMM-Based Fully Distributed Inverter-Based Volt/Var Control Strategy for Active Distribution Networks

Voltage and reactive power control via inverter-based distributed generators (DGs) is necessary for distribution networks to mitigate voltage violations. This article presents an accelerated alternating direction method of multiplier (ADMM)-based reactive power optimization algorithm in a fully distributed manner. In the proposed method, each area optimizes its own subproblem with limited boundary information communicating with neighbors to protect information privacy. Based on the distributed quasi-Newton technique, the second-order curvature of the dual function is estimated and applied to improve the convergence property of the ADMM. Simulation results have verified the effectiveness of the proposed method compared with other gradient-based methods, such as ADMM and dual decomposition. The proposed acceleration strategy can also be extended to other gradient-based distributed optimization in power systems.
Producing Millennial Generation Leaders in Addressing Change and Meeting the Challenges of the Industrial Revolution 4.0

The millennial generation is the next generation that dominates the workplace and future generations faced with many uncertainties in technology, society, and the workplace as well as business challenges. The industrial revolution 4.0 has demanded leadership to rethink the role of the millennial generation in organizations, think more systematically and humanistically about how to lead the next generation. The study of transformational leadership in the manufacturing industry shows that organizations need mutual benefits from the spirit of inspiring, advocating, empowering, and communicating effectively throughout the organization for future success. Leadership transformation refers to the goal of equipping workers with confidence and the ability to adapt and become more innovative at work; thus the development of leadership programs becomes a critical factor in determining what leadership development looks like and how significant the leadership role is for the success of the organization's future sustainability.
Low Cross-Polarization Ultrawideband Tightly Coupled Balanced Antipodal Dipole Array

An ultrawideband, tightly coupled balanced antipodal dipole array (TC-BADA) with low cross-polarization characteristic is presented. The proposed array achieves a low cross-polarization level by printing a pair of tightly coupled antipodal dipoles on two substrates to form a balanced radiating structure. The antenna elements are fed by a tapered balun with six pairs of vias placed at the balun edges. A meta-surface-based wideangle impedance matching (MS-WAIM) layer is designed based on the equivalent circuit model and current distribution, which improves the beam scanning ability and reduces the antenna profile simultaneously. The simulated results show that the proposed TC-BADA is able to operate over a 5:1 bandwidth (2.05–10.3 GHz) with active VSWR < {2, 2.8, 3.2} for scanning to {broadside, 45°, 60°}, respectively. The cross-polarization levels remain below −35 and −14 dB for scanning up to 60° in E-plane and 45° in D-plane, respectively. The overall antenna profile of the TC-BADA is only <inline-formula> <tex-math notation="LaTeX">$0.51\lambda _{\mathrm {H}}$ </tex-math></inline-formula> at the highest operating frequency. A prototype of <inline-formula> <tex-math notation="LaTeX">$16 \times 16$ </tex-math></inline-formula> array is fabricated and the central 8 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 8 elements are measured. Good agreement is achieved between the simulated and measured results.
ANALIZA STACK EXCHANGE MREŽE: VIZUALIZACIJA GRAFA POJMOVA I KLASIFIKACIJA TEKSTA PO PROGRAMSKIM JEZICIMA

U radu je prikazana analiza skupa podataka preuzetog sa Stack Exchange, mreže veb stranica posvećenih pitanjima i odgovorima. Rad ispituje osobine ovog skupa prvo kroz implementaciju metode vizualizacije pojmova i tema u skupu podataka, a zatim kroz izgradnju klasifikatora pitanja po programskim jezicima.
Multisource Compensation Network for Remote Sensing Cross-Domain Scene Classification

Cross-domain scene classification refers to the scene classification task in which the training set (termed source domain) and the test set (termed target domain) come from different distributions. Various domain adaptation methods have been developed to reduce the distribution discrepancy between different domains. However, current domain adaptation methods assume that the source domain and target domain share the same categories. In reality, it is hard to find a source domain that can completely cover all the categories of target domain. In this article, we propose to use multiple complementary source domains to form the categories of target domain. A multisource compensation network (MSCN) is proposed to tackle these challenges: distribution discrepancy and category incompleteness. First, a pretrained convolutional neural network (CNN) is exploited to learn the feature representation for each domain. Second, a cross-domain alignment module is developed to reduce the domain shift between source and target domains. Domain shift is reduced by mapping the two domain features into a common feature space. Finally, a classifier complement module is proposed to align categories in multiple sources and learn a target classifier. Two cross-domain classification data sets are constructed using four heterogeneous remote sensing scene classification data sets. Extensive experiments are conducted on these datasets to validate the effectiveness of the proposed method. The proposed method can achieve 81.23% and 81.97% average accuracies on two-source-complementary data set and three-source-complementary data set, respectively.
A new model for evaluating the diffraction elastic constants of WC-Co

A new model was developed to calculate the diffraction elastic constants (DECs), and of a C-Co cemented carbide. In this model, the polycrystal is treated as an agglomerate of randomly orientated anisotropic grains, which are assumed to be spherical and embedded within a homogenous effective medium which is determined as the average of all grains. The accuracy of the predicted value is confirmed by in situ X-ray diffraction method under uniaxial loading. The model predictions fit well with the test results, since the largest deviations between the measured and calculated values for and for the Co phase are less than 3.6% and 13.1%, respectively. The good agreement shows the reliable predictability of the model.
Helicopter Parents of Community College Students: How Community College Professionals Operationally Define and Address This Phenomenon

HELICOPTER PARENTS OF COMMUNITY COLLEGE STUDENTS: HOW COMMUNITY COLLEGE PROFESSIONALS OPERATIONALLY DEFINE AND ADDRESS THIS PHENOMENON Helen C. Hightower Old Dominion University, 2014 Director: Dr. Dennis E. Gregory This study examined whether the phenomenon o f parental over-involvement occurred in the Virginia Community College System. Concern has been expressed in the popular and academic literature in recent years over the increased level o f parental involvement at four year institutions whose student bodies consist almost exclusively of traditional-aged students. With a mix o f traditional-aged and non-traditional students at community colleges, this study investigated whether or not community college employees expressed similar concerns as their counterparts at senior institutions. The study was designed using a mixed methods approach and utilized a triangulation of results in order to answer four research questions. 1) How do student services staff and administrators in Virginia community colleges define parental over­ involvement? 2) To what extent does parental over-involvement exist in Virginia community colleges? 3) How do Virginia community colleges respond to over-involved parents? And 4) how do student services staff and administrators in Virginia community colleges describe an ideal collaboration with parents? Results of the study led to the development o f an operational definition of “helicopter parent” that has been absent in the literature. In addition, the study showed that over-involved, or helicopter, parents were an increasing presence at Virginia’s community colleges. College student services employees who participated in the study indicated that their colleges had done very little to respond to this growing segment o f involved parents and they were still learning how to work collaboratively with parents in order to ensure the best environment for student academic success and personal development. Student services employees expressed an interest in receiving systematic training and administrative support with respect to developing positive ways to work with students and their over-involved parents. The investigator developed a “Collaborative Student Support Model for Student Services Employees, Students, & Parents” as a suggestion on how to partner with parents to help support student academic success and psychosocial development.
Combustion of aluminum powder with steam entrained in a helium plasma using a 2.45 GHz microwave plasma torch

Ignition and combustion of ~20 µm diameter aluminum powder was achieved with a helium–steam-based 2.45 GHz microwave plasma torch as a proof of concept due to interest in utilizing aluminum powder as a fuel source for power generation given the material’s high energy density. Optical emission spectroscopy of the plasma in air, with steam-entrainment, and with aluminum particle injection was obtained in order to observe the radical species present. The combustion products were analyzed with x-ray diffraction (XRD) to determine the post-combustion composition and compared with published XRD data involving aluminum-water combustion. The results revealed that a microwave plasma torch in a steam environment is capable of igniting aluminum particles and sustains combustion between aluminum powder and radicals from water molecules. The torch design results in a mixing delay between the aluminum and steam radical reactants prior to sustained combustion. Enhanced mixing will be pursued with an improved injector design.
Environmental, social and governance initiatives and wealth creation for firms: An empirical examination

This study examines the effect of environmental, social, and governance (ESG) activities on firm performance of 4,887 global companies. Mean difference test shows that firms with a high level of ESG activities are different from their low‐ESG counterparts. The two‐stage least square results suggest that ESG activities on (a) the welfare for internal stakeholders and best corporate governance practices are beneficial for firm performance and (b) antitakeover mechanisms (pollution control) adopted by firms are negatively (positively) valued by market players. Overall, this is the first study to examine the effects of ESG on the market‐based and accounting‐based performance of global firms.
Integrity of the Uncinate Fasciculus Predicts Emotional Pattern Separation-Related fMRI Signals in the Hippocampal Dentate and CA3

Alterations in white matter integrity have been demonstrated in a number of psychiatric disorders that involve disruptions in emotional processing. One such pathway – the uncinate fasciculus (UF) – connects the orbitofrontal cortex (OFC) to the medial temporal lobes (MTL) and has been associated with early life adversity, maltreatment, anxiety, and depression. While it is purported to play a role in episodic memory and discrimination, its exact function remains poorly understood. We have previously described the role of the amygdala and dentate (DG)/CA3 fields of the hippocampus in the mnemonic discrimination of emotional experiences (i.e. emotional pattern separation). However, how this computation may be modulated by connectivity between the medial temporal lobes and the orbitofrontal cortex remains unknown. Here we ask the question of whether the uncinate fasciculus plays a role in influencing MTL subregional activity during emotional pattern separation. By combining diffusion imaging with high-resolution functional MRI, we found that reduced integrity of the UF is related to higher activation in the DG/CA3 subregions of the hippocampus during an emotional pattern separation task. We additionally report that higher levels of DG/CA3 activity are associated with poorer memory performance, suggesting that hyperexcitability in this network (which may be driven by CA3 recurrent collaterals) is associated with memory errors and that the UF may allow the OFC to exert inhibitory control on this network and improve discrimination of emotional experiences. This work provides novel mechanistic insight into the role of prefrontal interactions with the MTL, particularly in the context of emotional memory.
The corporate governance and efficiency of commercial banks in Pakistan: application of the non-parametric approach

This study examined the relationship of Corporate Governance (CG) on the efficiency of commercial banks listed on the Pakistan Stock Exchange (PSX) over the period from 2005 to 2014. The CG of commercial banks is measured with the composite CG index which is further subdivided into: board of directors, audit committee, disclosure and transparency, remuneration committee and shareholder’s rights. The Data Envelopment Analysis (DEA) approach is used to measure the technical efficiency (TE) and cost efficiency (CE) whereas the Tobit regression model is used to investigate the relationship between CG and both efficiency scores. The results for the composite CG index suggest that there is a positive and significant relationship of CG with both TE and CE of commercial banks. Moreover, the subindices also validate our results as they were mostly found positively and significantly associated with both efficiencies.
Atomoxetine for the Treatment of Adults with Attention Deficit Hyperactivity Disorder: A Cost-Utility Analysis in Spain

Background: Attention-deficit hyperactivity disorder (ADHD) frequently persists into adulthood and leads to a significant burden of illness. Many adults with ADHD suffer from comorbid conditions such as substance and alcohol use disorders and anxiety. Atomoxetine is the only drug therapy approved in Spain for the treatment of adult ADHD. This study estimates the cost-utility of atomoxetine compared with no treatment in adults with ADHD in Spain and in two specific subgroups: patients with comorbid anxiety or comorbid alcohol abuse. Method: A simple, state-transition Markov model with three health-states (treatment initiation, response and no-response) was developed. The model estimated the incremental cost per quality-adjusted life year (QALY). Treatment effectiveness and discontinuation rates were estimated from nine atomoxetine clinical trials. Utilities were estimated from a vignette study. Costs and outcomes were estimated over a one-year period from the perspective of the Spanish National Healthcare System. Results: The incremental cost per QALY gained with atomoxetine versus no treatment was €23,645 in the general ADHD population, €20,860 in patients with comorbid anxiety, and €24,675 in the comorbid alcohol abuse population. These values were below the willingness-to-pay threshold of €30,000 per QALY considered acceptable in Spain. The model was most sensitive to changes in the utility value of patients in the no-response health state. With the exception of some of the utility values, a positive net monetary benefit value was maintained following variations in all model parameters. Conclusion: Atomoxetine represents a cost-effective option compared
The Relationship Between Obesity and Physical Activity to the Incidence of Diabetes Mellitus in Ledug, Kembaran, Banyumas, Central Java

— Diabetes mellitus (DM) is a disease caused by metabolic disorders that occur in the pancreas which are characterized by an increase in blood sugar or often referred to as hyperglycemia due to a decrease in the amount of insulin from the pancreas (American Diabetes Association, 2012). The most common type of diabetes mellitus is type 2 diabetes. Risk factors for diabetes mellitus include obesity and physical activity. This study aimed to determine the relationship between obesity and physical activity to the incidence of diabetes mellitus. A correlational analysis with a crosssectional approach was applied in this study. The sampling technique used was simple random sampling. The samples of this study were members of Chronic Disease Management Program (Prolanis) in Ledug, Kembaran, Banyumas in June 2019. The samples were 480 respondents determined by the Slovin’s formula. The type of data was the primary data obtained from questionnaire as the measurement instrument. The data analysis used was univariate frequency distribution and bivariate analysis of Chi-Square and Kolmogorov Smirnov. The results showed that there was a relationship between obesity (based on BMI range) and the incidence of diabetes mellitus, but there was no relationship between physical activity and the incidence of diabetes mellitus.
Characterization of complete mitochondrial genome of Nemania diffusa (Xylariaceae, Xylariales) and its phylogenetic analysis

Abstract Nemania diffusa is a parasitic fungus of many plant species and causes large economic losses to the forestry industry. In the present study, the complete mitochondrial genome of N. diffusa is first reported. The circular genome is 258,879 bp in length, containing 14 protein coding genes, 2 ribosomal RNA genes, 25 transfer RNA genes. The 258,879 bp long mtDNA of N. diffusa represents one of the largest sequenced fungal mitogenomes. The overall base composition is 34.4% A, 35.9% T, 14.0% G, 15.7% C and the content of GC is 29.7%. Phylogenetic analysis based on concatenated protein coding genes from 24 species in 8 orders was conducted using Bayesian inference (BI) method. Nemania diffusa is clustered in the order Xylariales and is more closely related to Annulohypoxylon stygium of Hypoxylaceae. This work facilitates the future study of molecular biology and evolution of xylariaceous fungi.
A High Step-Down Buck Converter With Self-Driven Synchronous Rectifier

In this article, a new single-switch buck converter (without considering the synchronous rectifier) with extended duty cycle and continuous output current is proposed. The presented converter employs a self-driven synchronous rectifier with gate energy recovery, which leads to efficiency improvement and simplicity of the converter and the gate drive circuit. The extended duty cycle results in lower current stress of the high-side MOSFET and reduced voltage stress across the synchronous rectifier. Furthermore, the reverse recovery losses of synchronous rectifier are dramatically decreased due to the applied coupled inductors. The introduced converter also provides shoot-through protection and load protection when the high-side MOSFET remains on. In order to clamp the drain–source voltage spikes of the main switch and recover the leakage inductance energy, a lossless snubber circuit is added, which reduces the turn-off drain–source voltage and consequently decreases the turn-off switching losses of the main MOSFET. Moreover, the main switch turns on under zero current switching (ZCS), which results in efficiency improvement. A 150-W prototype of the proposed converter is implemented to verify the theoretical analysis and confirm its efficiency improvement and advantages.