Miracle-dz/UniFAR-FTUs huggingface dataset:
Compact High-Gain and Wide-Azimuth-Beam Filtenna for V2X Communication

This communication presents a high-gain filtenna with a wide azimuth beam and high out-of-band suppression for vehicle-to-everything (V2X) communications. The filtenna is composed of a shorting double-sided parallel strip line (DSPSL) with a metal via, a pair of dipole arms, U-shaped strips, and a board in a Shark-Fin housing. The DSPSL operates under half-modes for compact size. Two adjacent modes of the DSPSL are analyzed to generate a radiation null. The electric dipole is designed utilizing high-order modes to achieve high gain. Furthermore, a unidirectional radiation with high gain and wide beam is obtained by combining the electric dipole with the DSPSL. U-shaped strips are introduced into the filtenna, which can not only obtain the other radiation null but also increase gain and front-to-back ratio. Without extra filtering structures, a quasi-elliptic filtering response with out-of-band broadband suppression is realized. Characteristic mode analysis and equivalent circuit model are utilized for filtenna design. For demonstration, the proposed filtenna is implemented. The maximum gain in the azimuth plane is 7.6 dBi with the beamwidth of 124°. The out-of-band suppression is over 18.3 dB within 3–5.7 GHz. Featuring a compact size, high gain, wide azimuth beam, and harmonic suppression, the proposed filtenna is suitable for V2X communications.
CFD ANALYSIS AROUND AHMED BODY USING A LAMINAR KINETIC ENERGY BASED TRANSITION AND TURBULENCE MODEL

Due to numerous reasons, improving the fuel efficiency has become a very important topic for research nowadays. One of the ways to improve fuel efficiency is to reduce the drag forces encountered by moving bodies. For prediction of drag forces, diversified approaches can be undertaken. CFD simulations provide these, but their accuracy is very dependent on the modeling of transition effects in the turbulence model. In the present study, a simple shape (called Ahmed Body) has been investigated using an open-source CFD software called OpenFOAM. Two different classes of turbulence models (namely k − ω SST and k − kL − ω) have been used and the obtained results are validated against experimental data. Efforts have also been made in the present research to analyze the vortices in the wake region of the Ahmed Body using selected visualization techniques such as surface line-integral convolution, Q-criterion, and λ2-criterion.
Preparation of Green Anti-Staphylococcus aureus Inclusion Complexes Containing Hinoki Essential Oil

This study aimed to prepare anti-Staphylococcus aureus inclusion complexes (ICs) of Hinoki essential oil (HEO) with β-cyclodextrin (β-CD) and 2-hydroxypropyl-β-cyclodextrin (2-HP-β-CD). An ultrasound-assisted kneading method was applied for the complexation for the first time. The recovery yield, embedding fraction and loading capacity of the HEO/β-CD ICs were 92.5%, 78.0% and 11.9%, respectively, while the corresponding values were 80.8%, 73.7% and 12.9% for the HEO/2-HP-β-CD ICs. As well, a comparative study confirmed the efficiency of the ultrasound-assisted kneading method was higher than the traditional kneading method. The results of SEM, XRD, GC-MS and FT-IR suggested the successful formation of ICs. A significant anti-Staphylococcus aureus activity of the fabricated ICs was demonstrated using a colony counting method. Notably, when the dose in liquid culture medium was 20 g L−1, inhibitory rates of 99.8% for HEO/β-CD ICs and 100% for HEO/2-HP-β-CD ICs were achieved. Furthermore, the hydrophilic property of the ICs was proved by water contact angle measurements, implying they have the potential to act as anti-Staphylococcus aureus agents for blending with hydrophilic biodegradable materials for diverse food packaging utilizations.
Voicing Is Not Icing! The Role of Career Empowerment in Fostering Voice Behavior Through Career Security: A Time-Lagged Three-Wave Study

This study investigates how career empowerment predicts promotive and prohibitive voice behaviors and how career security intervenes in this relationship. The moderating role of bystanders’ direct and indirect intervention behavior is also tested between career security and voice behavior. Three-wave time-lagged data were collected from 267 non-managerial front-line banking employees to test the proposed model. The structural equation modeling (SEM) statistical technique was used for data analysis. The results showed that career empowerment significantly predicts promotive and prohibitive voice behaviors, both directly and indirectly. Furthermore, the direct intervention behavior of bystanders significantly moderates the relationship between career security and both types of voice behavior (promotive and prohibitive). Theoretical and practical implications of the study are discussed.
Are capital gains the Achilles’ heel of taxing the rich?

This paper considers the role of capital gains taxation in enhancing tax progressivity, and argues that capital gains are the Achilles’ heel of taxing the rich more effectively. We revisit the key aspects of how capital gains are taxed and address the main arguments against taxing capital gains more heavily: (i) it would discourage socially beneficial activities, such as innovation, (ii) implementing structural changes is unadministrable, and (iii) the ‘lock-in’ effect means that increasing the tax rate is an inefficient way to raise revenue. To address concerns with the unpopularity of taxing unrealized gains during one’s lifetime and retroactive taxes, we conclude with a partial proposal for constructive realization at death that would apply only to gains accrued after a certain date, while allowing for discounted pre-payments of tax liability.
Deep Sequence Modeling for Event Log-based Predictive Maintenance

Predictive maintenance (PdM) is one of the most important machine learning (ML) use cases in a wide range of businesses that own or manufacture machinery. Many PdM applications utilize event logs/sequences that record machine operating conditions and health data. However, industrial scale PdM use cases bring a variety of challenges which makes it difficult to directly apply state-of-the-art models. In this work, we start with a PdM use case from a company Light & Wonder (L&W) Inc., which requires us to work with about 280 million events from ∼ 500 gaming machines accumulated over 10 months, and a short 24-hour time window could contain from 0 to approximately 29,000 events. Developing performant models for event sequence data at such scale is a non-trivial task. In this work, we propose a generic, generalizable modeling framework which we refer to as ElasticPdM for industrial scale PdM applications using event log data, which uses novel methods including time-adaptive event sequence binning and time-aware event sequence embedding to process long event sequences. Applied on the real-world L&W data, our ElasticPdM is 13-20% more accurate than state-of-the-art baselines on Recall at High Precision metrics used commonly for PdM.
The empirical Bayes estimators of the mean and variance parameters of the normal distribution with a conjugate normal-inverse-gamma prior by the moment method and the MLE method

Abstract Most of the samples in the real world are from the normal distributions with unknown mean and variance, for which it is common to assume a conjugate normal-inverse-gamma prior. We calculate the empirical Bayes estimators of the mean and variance parameters of the normal distribution with a conjugate normal-inverse-gamma prior by the moment method and the Maximum Likelihood Estimation (MLE) method in two theorems. After that, we illustrate the two theorems for the monthly simple returns of the Shanghai Stock Exchange Composite Index.
Assessing the Effectiveness of Social Protection Measures in Mitigating COVID-19-Related Income Shocks in the European Union

The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expressed in this paper are entirely those of the authors. They do not necessarily represent the views of the International Bank for Reconstruction and Development/World Bank and its affiliated organizations, or those of the Executive Directors of the World Bank or the governments they represent.
Hellas basin, Mars: Formation by oblique impact

Hellas, a 2,000-km-diameter, roughly circular multiring impact basin in the southern highlands of Mars, has a pronounced southeastern lobe of rim material that extends for some 1,500 km. This lobe and a system of ridges concentric to the southern part of the basin (including part of the lobe) were interpreted to be formed by an oblique impact that was inclined in the direction of the lobe. Our preliminary geologic mapping of the Hellas region (lat -20 to -65 deg, long 250 to 320 deg) at 1:5,000,000 scale gives this hypothesis additional supporting evidence, including a symmetric distribution of basin ejecta and volcanic centers across the inferred trend of the impact. Furthermore, measurements of relief indicate that the downrange ejecta may be about twice as thick as they are elsewhere around the rim.
Strategic Implementation and Organizational Performance in Kenya Rural Roads Authority in Mount Kenya Region

Purpose: The study examined strategic implementation and organizational performance in Kenya Rural Roads Authority Mount Kenya region. The objectives of the study comprised of examining the influence of resource allocation, leadership, communication and culture on organizational performance of Kenya Rural Roads Authority. The study was anchored on the following theories: Theory of resource allocation, Transformational leadership theory, Adaptive structuration theory, Organizational culture theory, and Resource based view theory. Methodology: A descriptive research design was employed in the study. The target population comprised of 147 managers from Kenya Rural Roads Authority operating in Mount Kenya Region. A census was utilized where all the managers were included in the study. The study employed 5-point Likert scale questionnaires to gather data from the respondents. Both inferential and descriptive statistics were employed in analysing the collected data. Descriptive statistics comprised of means, standard deviation and average while inferential statistics comprised of correlation and regression analysis. The results of the analysis was displayed in form of tables and figures. Findings: The study established that of resource allocation, leadership, communication and culture bears a positive and significant influence on organization performance of Kenya Rural Roads Authority. This is depicted by beta values of 0.439, 0.354, 0.246 and 0.173 and significance values of 0.000, 0.000, 0.003, and 0.012 respectively. The results implies that increasing either resource allocation, leadership, communication or culture with one unit results to increase in levels of organizational performance with respective better unit of the independent variable. The study concluded that strategic implementation bears a positive and significant influence on organizational performance of Kenya Rural Roads Authority. Unique contribution to theory, practice and policy: It is therefore recommended that strategy managers nurture and avail aspects of resource allocation, leadership, communication, and culture while implementing.
Lookup, Explore, Discover: how DBpedia can improve your Web search

The power of search is with no doubt one of the main aspects for the success of the Web. Diﬀerently from traditional searches in a library, search engines for digital libraries (as the Web is) allow to return results that are considerably eﬀective. Nevertheless, current search engines are no more able to really help the user in all those tasks that go under the umbrella of exploratory search , where the user needs not only to perform a lookup operation but also to discover, understand and learn novel contents on complex topics while searching. Similar problems arise also with search exploiting classical keyword-based tagging techniques. In the paper we present LED , a web based system that aims to improve Web search by enabling users to properly explore knowledge associated to a query/keyword. We rely on DBpedia to explore the semantics of keywords and to guide the user during the exploration of search results.
Directed Pathos Total Digraph of an Arborescence

For an arborescence Ar, a directed pathos total digraph Q = DPT (Ar) has vertex set V (Q) = V (Ar) ∪ A(Ar) ∪ P (Ar), where V (Ar) is the vertex set, A(Ar) is the arc set, and P (Ar) is a directed pathos set of Ar . The arc set A(Q) consists of the following arcs: ab such that a, b ∈ A(Ar) and the head of a coincides with the tail of b; uv such that u, v ∈ V (Ar) and u is adjacent to v; au (ua) such that a ∈ A(Ar) and u ∈ V (Ar) and the head (tail) of a is u; Pa such that a ∈ A(Ar) and P ∈ P (Ar) and the arc a lies on the directed path P ; PiPj such that Pi, Pj ∈ P (Ar) and it is possible to reach the head of Pj from the tail of Pi through a common vertex, but it is possible to reach the head of Pi from the tail of Pj . For this class of digraphs we discuss the planarity; outerplanarity; maximal outerplanarity; minimally nonouterplanarity; and crossing number one properties of these digraphs. The problem of reconstructing an arborescence from its directed pathos total digraph is also presented.
Effect of ethanolic extract of Moringa oleifera leaves on the number of spermatogenic cells and Leydig cells of gentamicin-induced rats

This study aimed to determine the effect of the administration of ethanolic extract of Moringa oleifera leaves on the number of spermatogenic and Leydig cells of gentamicin-induced rats (Rattus norvegicus). This study used 25 white male rats divided randomly into five groups. The rats were injected with Gentamicin 5 mg/kg bw/day subcutaneously for 14 days, except for the negative control group (NCG). During the next 14 days, the rats were given oral moringa leaf extract of 200, 316, and 500 mg/kg bw/day respectively for E200, E316, and E500 groups. The data were analyzed with one-way ANOVA followed by Duncan's test. The results showed that the number of spermatogonia, spermatocytes, and spermatids in NCG was higher (p <0.05) than in the other groups. The number of spermatogonia, spermatocytes, and spermatids in the E316 group was higher (p <0.05) than in PCG. The number of spermatogonia in the E500 group was higher (p <0.05) than in the E316 group, but the number of spermatocytes and spermatids in the E316 group was similar (p >0.05) to the E500 group. The number of PCG Leydig cells was the smallest (p <0.05) compared to the other groups. The administration of Moringa leaves extract in the E200 and E316 groups increased (p <0.05) the number of Leydig cells compared to PCG. The number of Leydig PCG cells in the E500 group was not significantly different (p >0.05) from that of the NCG. It could be concluded that administration of Moringa oleifera leaves extract restored the number of spermatogenic and Leydig cells of gentamicin-induced rats.
Facilitators and barriers to infant post-natal HIV prophylaxis, a qualitative sub-study of the PROMISE-EPI trial in Lusaka, Zambia

Background Infant post-natal prophylaxis (PNP) is used to prevent HIV transmission through breastfeeding. The WHO edited recommendations but so far there is no consensus on the duration of prophylaxis and the type of drug used depends on national guidelines. In Zambia, the national recommendations include a three-drug prophylaxis, composed of a dispersible combined tablet of zidovudine (AZT) and lamivudine (3TC) and an oral suspension of nevirapine (NVP) for 12 weeks or until the mother’s viral load is <1,000 cp/mL. The PROMISE-EPI study, modified the PNP regimen to lamivudine only, initiated at 6 weeks and continued until 12 months to all HIV exposed uninfected infants of virally unsuppressed mothers. Our aim in this analysis was to identify barriers and facilitators to this extended PNP, the keystone toward an effective prevention. Methods Individual interviews and focus group discussion (FGD) were conducted with PROMISE-EPI participants who had received prophylaxis for their children from the national program up to 6 weeks and then lamivudine oral solution in PROMISE-EPI study. Health care providers and PROMISE-EPI staff were also interviewed. Sessions were recorded, transcribed verbatim and translated from local languages into English. An initial code-book was designed and then adapted on the basis of the emerging themes, to allow a descriptive thematic analysis. Results More barriers to PNP adherence were identified with triple drug prophylaxis than with lamivudine. These barriers were related to the formulation and bitter taste of AZT/3TC tablets. The ready to use formulation and sweet taste of lamivudine syrup were appreciated by mothers. Extended PNP proposed in the PROMISE-EPI study was globally well accepted and strategies were found to increase adherence. Adherence to lamivudine appeared to be better than the mothers’ adherence to their own antiretroviral therapy. Conclusion Accompanying mothers living with HIV and giving them the choice of the PNP to prevent transmission via breastfeeding (type of PNP regimen and extended PNP in non-adherent mothers), may be one of the keys to reducing the burden of pediatric HIV acquisition in low and middle income countries.
TECHNOLOGY INFRASTRUCTURE, MANUFACTURING TECHNOLOGY AND SUSTAINABLE MANUFACTURING PRACTICE IN SMES

Nowadays, sustainability practices in manufacturing are required for the business environment, especially for SMEs. In particular, technology capabilities are essential to enhance firms’ capacity. This paper explores the relationship between technology infrastructure, manufacturing technology and sustainable manufacturing practice (SMP) in the context of SMEs. The data were collected through questionnaires using purposive sampling in Thailand, with completed 237 surveys being returned. We used structural equation modeling to test the research framework. The results reveal that the implementation of SMP in SMEs is still at a medium level, thus demonstrating that there is still substantial room for enhancement. Moreover, the findings show that technology infrastructure has an impact on SMP, while manufacturing technology also significantly mediates the relationship between technology infrastructure and SMP. These findings imply that SMEs in the manufacturing industry can develop technology capabilities as essential resources to gain higher SMP for sustainability in the competitive business environment and to accomplish the Sustainable Development Goals (SDGs).
Preeclampsia and the Antiphospholipid Syndrome

Antiphospholipid syndrome (APS) is characterized by venous or arterial thrombosis and/or adverse pregnancy outcome in the presence of persistent laboratory evidence of antiphospholipid antibodies (aPLs). Preeclampsia complicates about 10–17% of pregnancies with APS. However, only early onset preeclampsia (<34 weeks of gestation) belongs to the clinical criteria of APS. The similarities in the pathophysiology of early onset preeclampsia and APS emphasize an association of these two syndromes. Overall, both are the result of a defective trophoblast invasion and decidual transformation at early gestation. Women with APS are at increased risk for prematurity; the reasons are mostly iatrogenic due to placental dysfunction, such as preeclampsia or FGR. Interestingly, women with APS have also an increased risk for preterm delivery, even in the absence of FGR and preeclampsia, and therefore it is not indicated but spontaneous. The basic treatment of APS in pregnancy is low-dose aspirin and low-molecular-weight heparin. Nevertheless, up to 20–30% of women develop complications at early and late gestation, despite basic treatment. Several additional treatment options have been proposed, with hydroxychloroquine (HCQ) being one of the most efficient. Additionally, nutritional interventions, such as intake of vitamin D, have shown promising beneficial effects. Curcumin, due to its antioxidant and anti-inflammatory properties, might be considered as an additional intervention as well.
Channel-Weighted Structured Correlation Filters for UAV Tracking

In the visual object tracking via unmanned aerial vehicle (UAV), the correlation filtering (CF) is one of the mainstream methods for the reason that optimizing filters by circulant samples facilitates the calculation. The prevalent discriminative CF (DCF) frameworks credited to a ridge regression model followed by various regularizations focus on regressing to a fixed Gaussian label, which may easily induce overfitting. To these concerns, we integrate the hinge-squared loss (HSL) of structured support vector machine (SVM) with the CF model so as to attain a dynamical label which regresses the difference between target and background samples and thus enhances the robustness in tracking. Moreover, we assume weighted channels to augment the discrimination of HSL, thus indicating it has as good extensibility as the ridge regression in usual CF frameworks. The proposed method channel-weighted structured CF (CWSCF) has achieved excellent performance compared with other methods in mainstream UAV tracking benchmarks.
Hybrid Model Predictive Control of a Two-Body Wave Energy Converter with Mechanically Driven Power Take-Off

In this paper, a variable damper is proposed to regulate the efficiency of a two-body wave energy converter (WEC) with mechanically driven power take-off (PTO). The variable damper introduces logic constraints into the WEC system, which can be translated into a mixed logical dynamical form with the dynamics of real-valued variables, the dynamics of logic variables, and their interactions. A hybrid model predictive control (MPC) method is used to determine the control inputs, which has the capacity to handle various constraints. The performance is assessed through simulations to evaluate the effectiveness of the proposed method. The achievable performance improvements of the proposed hybrid MPC are shown by means of comparative analysis with uncontrolled WEC devices. The results show that the proposed hybrid MPC has a high requirement on the lower bound of the variable damper and the maximum damping is used only at low relative velocities to achieve the optimum phase, like latching control. The hybrid MPC performs exceptionally well under wave conditions with a small significant wave height and long wave period, improving the power generation of the uncontrolled system up to 22.5%. And, the prediction error has a significant effect on hybrid MPC performance, especially for long prediction horizon.