Miracle-dz/UniFAR-FTUs huggingface dataset:
Estudo experimental de descarga de sedimentos não-coesivos através de descarregador de fundo tipo tubo ranhurado

Among several techniques for prevention and mitigation of reservoir sedimentation, bottom outlets arise as a means of removing sediment deposited close to the dam. Given the reduced sediment removal provided by traditional bottom outlets under pressure flushing conditions, this article proposes a new type of structure that aims to increase sediment removal in the direction parallel to the dam axis. An experimental installation was employed to evaluate its operation as a function of the variation of its diameter and flow and sediment characteristics. Through analysis of the bathymetry generated by the structure, a dimensionless relation for predicting the scour pit length was obtained, presenting good fitness to the experimental data.
The Moderating Effects of Employee Benefits and Job Burnout among the Employee Loyalty, Corporate Culture and Employee Turnover

The purpose of this research was to find the employee welfare and loyalty of burnout employees, corporate culture and the role of employee turnover in the hotel industry. A total of 330 questionnaires were sent out in the study and 257 valid questionnaires were adopted. The main results showed: (1) Employee loyalty and corporate culture have a negative impact on employee turnover; (2) The interaction between employee loyalty and corporate culture affects job burnout and affects the employee turnover rate; (3) Employee loyalty affects corporate culture Have a positive impact; (4) Influencing employee turnover rate through intermediary corporate culture; (5) When corporate culture and employee turnover have a moderating effect, that is, when employee benefits are high, employee burnout will affect job burnout; that is, when employee benefits are low, employee burnout will reduce job burnout; when employee benefits are low, employee burnout will affect job burnout. Therefore, in order to expand the development space of the catering industry, the quality and efficiency of the service industry must be improved, which requires a connection between professional talents and the rational use of human resources. This requires professionals and proper use of human resources to maintain relationships. Managers need to pay attention to environmental changes and social dynamics, changes in structure and employees so that they can flexibly adjust to meet the needs of employees.
Value investing analysis of banking sector on BIST-100

PurposeThe main goal of this study is to apply the value investing criteria to a selected portfolio and to test the validity of basic value investment hypothesis. The return performance of the selected portfolio was examined over the other bank stocks in addition to assessing the risk and return criteria (Sharpe Ratio). The efficient ratio (Price/Book Value vs Price/Earnings ratios) in the formation of the selected portfolio is further explored. The paper aims to prove the existence of margin over P/B Value and P/E ratios to the banking sector in Turkey. MethodologyA universe of 6 banks (3 state and 3 private) trading in BIST-100 were selected within the framework of this analysis. BIST100, MATRIKS DATATM database was used to compile data for six selected banking stocks, for the 95 months period between February 2011 to December 2018. The performance of the selected portfolio was benchmarked over the control portfolio for the relevant financial year. FindingsIn line with the results of the analysis and as observed in developed markets, the value investing strategies implemented for the selected banking shares listed in BIST-100, offer significantly high returns to the investors. Consequently, an investing strategy grounded on P/E ratio is more profitable than a value investing strategy relying on P/B ratio. The study thus demonstrates that the shares selected within the framework of the value investing concept garner superior returns compared to benchmark portfolio. ConclusionAs observed in developed markets, the value investing strategies implemented for the selected banking shares listed in BIST-100 results in significantly high returns for the investors. An investing strategy grounded on P/E ratio is therefore more profitable than a value investing strategy relying on P/B ratio.
Simultaneous Prediction of Remaining-Useful-Life and Failure-Likelihood with GRU-based Deep Networks for Predictive Maintenance Analysis

Predictive maintenance (PdM) has been an integral part of large industrial sites collecting data from multiple sensors to reduce the maintenance power and costs with the advent of Industry 4.0. Two of the major problems in PdM used at large industrial sites are: (i) the prediction of remaining useful life (RUL); (ii) the prediction of the likelihood of failing within a predefined time period. While data oriented maintenance predictions were heavily focused on using classical techniques for such problems, recent interest shifted towards utilizing AI based solutions due to the better generalization capabilities of deep solutions. Among the time-sequence based deep networks, RNN, GRU and LSTM based networks are the most frequently used solutions. GRUs have demonstrated their faster learning capabilities with near or better prediction performance on certain tasks already. However, predicting multiple PdM tasks including both RUL and failure detection, simultaneously within the same network in an end to end manner with GRUs has not been much studied in the literature before. In this paper, we introduce a solution to predict those two tasks simultaneously within the same network based on GRUs. In our experiments we compare the performance of GRU layers to LSTM and RNN layers and report their performance on NASA dataset.
Saudi EFL Students’ Use and Perceptions of Blackboard before and during Online Learning Amid COVID-19

Online learning becomes the means of education during COVID-19. Blackboard is one of the learning management systems that has been widely used before and during the pandemic. This study focuses on English as a Foreign Language (EFL) students’ use and perceptions of Blackboard. It explores and compares EFL students’ use and perceptions of Blackboard considering three phases: before COVID-19 in 2019, during online learning in 2020, and during online learning in 2021. A questionnaire and semi-structured interviews were used to collect the data. A total of 381 Saudi EFL students participated in the study. The results show that there are statistically significant differences in EFL students’ use of Blackboard between the three phases. EFL students’ use of Blackboard increased during online learning in 2020 compared to 2019, especially concerning the frequency of visiting Blackboard and the time students spent using it. Further, EFL students’ use of Blackboard increased significantly during online learning in 2021 compared to 2019 with regard to visit frequencies, time spent, and Blackboard tools used. Considering perceptions, the results indicate that there are statistically significant differences in students’ perceptions of Blackboard in terms of easiness and usefulness between the three phases. Interestingly, students had more positive perceptions of Blackboard before COVID-19 in 2019 and during online learning in 2021. The technical problems that students faced while using Blackboard during 2020 might have affected their perceptions. The study results of students’ use and perceptions of Blackboard are discussed in light of institutional policies and support.
Comparative Study Between ATOMES Novels, NOVOSECT SC21®, ATO BED BUG® and NEO-BOOST® as a Bio-organic Solution in Managing Tomato Open Field Plantation in Hrajel Area in Lebanon

The increasing use of chemical insecticides has adversely effected the environment and increased insect resistance. Biopesticides have been noticed the potential to be an excellent alternative to chemicals to reduce the negative impacts to human health and the environment. Tomato (Lycopersicon esculentum) is the second most important vegetable crop worldwide due to its nutritional importance. The effect of NOVOSECT SC21® (0.5 L/200 L), ATO BED BUGS® (1 L/200 L) and NEO-BOOST® (1 kg/200 L) against Tuta absoluta, Liriomyza trifolii and Alternaria solani was studied. A complete randomized block design (CRBD) was used with three replications, three treatments and one control in Hrajel area in Lebanon in the summer of 2020. We evaluated the level of infestation and larval mortality level of Tuta absoluta, Liriomyza trifolii and Alternaria solani infection 24, 48 and 72 hr after the application. Results showed that NOVOSECT SC21® (Mix of metabolites of the Bacillus F.D. 777) was the most efficient in decreasing the infestation and inducing larval mortality level of T. absoluta and L. trifolii and the fungal infection induced by A. solani with significant difference with time, followed respectively by ATO BED BUGS® and finally NEO-BOOST®.
Learning Multi-Agent Communication through Structured Attentive Reasoning: Appendix

Policy gradient (PG) methods are the popular choice for a variety of reinforcement learning (RL) tasks. In the PG framework, the parameters θ of the policy are directly adjusted to maximize the objective J(θ) = Es∼pπ ,a∼πθ [R], by taking steps in the direction of∇θJ(θ), where p , is the state distribution, s is the sampled state and a is the action sampled from the stochastic policy. Through learning a value function for the state-action pair, Q(s, a), which estimates how good an optimal action a is for an agent in state s, the policy gradient is then written as, [13]:
Lambert W Based Speed Reduction Model in Presence of Pedestrian Movements: Case Studies on Undivided Streets

Pedestrian movements sharing right-of-way with vehicular traffic have adverse impacts on the mobility of the traffic stream. Pedestrian movements both along and across the road often force drivers of approaching vehicles either to stop completely or to slow down and change the existing lane. It ultimately results in a decrease in stream speed. With the aim of determining the influence of pedestrian movements, the present study collected traffic data at a standard section (without pedestrian movements) and both traffic and pedestrian data at a pedestrian section (with considerable pedestrian movements). To determine the speed at the standard section, this paper presents a novel ‘Lambert W function’-based speed prediction model in the context of a two-lane undivided urban road. When stream speeds of the pedestrian section were compared to the stream speeds obtained through the speed prediction model at the same traffic volume condition in absence of pedestrians, a significant reduction was observed. This reduction in stream speed is governed by pedestrian parameters. A new pedestrian parameter ‘lateral position of pedestrian from the edge while walking along the road’ was conceived in this study along with few other parameters to predict Percent Speed Reduction (PSR). Intensities of these pedestrian parameters were observed varying over time which results in a high fluctuation in PSR within a range of 29% to 62%. Finally, this investigation forwards an empirical model of Percent Speed Reduction (PSR) to predict the stream speed in the presence of onstreet pedestrian movements on undivided urban roads. The outcome of this paper will help transport planners to estimate the efficiency of pedestrian infrastructure projects before implementation.
Book of Abstracts and Session Submissions

s Wednesday 30 June 2021 1 Wednesday 30 June 2021 Session S01.2 The leeds posT covid-19 rehabiliTaTion paThway; whaT we have learnT and achieved so far Chisman E, France S, McCormick S, Shardha J Leeds Community Healthcare NHS Trust Aim: Provide an overview of the Leeds post-COVID Rehabilitation Team; to share practice and learning in this new and emerging area of occupational therapy. Relevance to practice: looks at occupational therapy provision in one of the only community-based post-COVID services, and adapting practice, e.g. virtual methods. Leadership: how the value of occupational therapy was promoted and the service expanded. Research: reference to research team embedded within the service to evaluate our work and consult emerging evidence. Conference Theme Rehabilitation and recovery
Evaluating Harmonic Distortions on Grid Voltages Due to Multiple Nonlinear Loads Using Artificial Neural Networks

This paper presents a procedure to estimate the impacts on voltage harmonic distortion at a point of interest due to multiple nonlinear loads in the electrical network. Despite artificial neural networks (ANN) being a widely used technique for the solution of a large amount and variety of issues in electric power systems, including harmonics modeling, its utilization to establish relationships among the harmonic voltage at a point of interest in the electric grid and the corresponding harmonic currents generated by nonlinear loads was not found in the literature, thus this innovative procedure is considered in this article. A simultaneous measurement campaign must be carried out in all nonlinear loads and at the point of interest for data acquisition to train and test the ANN model. A sensitivity analysis is proposed to establish the percent contribution of load currents on the observed voltage distortion, which constitutes an original definition presented in this paper. Initially, alternative transient program (ATP) simulations are used to calculate harmonic voltages at points of interest in an industrial test system due to nonlinear loads whose harmonic currents are known. The resulting impacts on voltage harmonic distortions obtained by the ATP simulations are taken as reference values to compare with those obtained by using the proposed procedure based on ANN. By comparing ATP results with those obtained by the ANN model, it is observed that the proposed methodology is able to classify correctly the impact degree of nonlinear load currents on voltage harmonic distortions at points of interest, as proposed in this paper.
Timing and Pace of Neolithisation in the Dutch Wetlands (c. 5000–3500 cal. BC)

Abstract This article presents an overview of the current evidence on the process of Neolithisation in the Dutch wetlands. Over the years, several models have been proposed with different perspectives on the timing and pace of the process: a long transition, an early short transition, and a late short transition. The applicability of any of these models is, of course, dependent of the evidence. In this article, we briefly discuss recently obtained data from the Netherlands on vegetation disturbance (woodland clearing), soil disturbance (tillage), cereal cultivation, animal husbandry, and the use of ceramics. The data discussed involve palynological, sedimentary, micromorphological, archaeobotanical, zooarchaeological, as well as lipid analyses. Hence, it is concluded that from the mid fifth millennium cal. BC onwards, various aspects of a more “Neolithic lifestyle” become apparent in the archaeological record, including cereal cultivation on a structural, but small-scale basis in wetland environments. However, despite the “gradual” tendency that can be observed, the evidence is as yet inconclusive with regard to any of the models, due to persisting limitations of the datasets, potential regional variability, and aspects of scale. A new project, the Emergence of Domestic Animals in the Netherlands (EDAN), aims at a better understanding of animal husbandry through aDNA and isotope analyses, within a framework of statistical chronological modelling. We expect this project to enhance the debate greatly.
Portfolios of the Rich

Recent research has shown that rich' households save at much higher rates than others (see Carroll (2000); Dynan, Skinner, and Zeldes (1996); Gentry and Hubbard (1998); Huggett (1996); Quadrini (1999)). This paper documents another large difference between the rich and the rest of the population: portfolios of the rich are heavily skewed toward risky assets, particularly investments in their own privately held businesses. The paper explores three possible explanations of these facts. First, perhaps there is exogenous variation in risk tolerance, so that highly risk tolerant house-holds engage in high-risk, high-return activities, and the risk-lovers who are lucky constitute the rich. A second possibility is that capital market imperfections a la Gentry and Hubbard (1998)and Quadrini (1999) require entrepreneurial activities to be largely self-financed, and these same imperfections imply that entreprenurial investment will yield high average returns. The final possibility is that wealth enters households' utility functions directly as a luxury good as in Carroll (2000) (one interpretation is that this reflects the utility of anticipated bequests), implying that risk aversion declines as wealth rises. The paper concludes that the overall pattern of facts suggests both Carroll-style utility and Gentry/Hubbard-Quadrini style capital market imperfections are important.
Metabolic Fate of a New Dihydropyridine Calcium Antagonist, AE0047 (I): Absorption and Excretion of AE0047, in Rats and Dogs

Absorption and excretion of 14C-AE0047, a new dihydropyridine calcium antagonist, were stu died in rats and dogs after oral or intravenous administrations. 1. When 14C-AE0047 was administered to male rats at a dose of 3.0 mg/kg orally, the concentration of radioactivity and the unchanged AE0047 in plasma reached the Cmax of 1. 34μg eq./ml and 0.92 μg/ml, respectively, at 3.3 hr, and then decreased with half-life of 4.5 to 5.2 hr until 24 hr. The absorption rate and bioavailability of the 14C-AE0047 in rats were calculated to be about 24.5% and 22.0%, respectively. At 2 hr after an oral administration of 14C-AE0047 to male dogs at a dose of 3.0 mg/kg, the concentration of radioactivity and the unchanged AE0047 in plasma reached the Cmax of 1. 29μg eq./ml and 0.73 μg/ml, respectively, and then decreased with half-life of about 12 hr. The absorption rate and bioavailability of the 14C-AE0047 in dogs were calculated to be about 23 . 9% and 21.2%, respectively. 2. When 14C-AE0047 was administered to fasting male rats at dose range of 0.1 to 6.0 mg/kg, the bioavailability values increased according to a dose-escalation, suggesting the metabolism of AE0047 in liver is saturable. 3. The AUC of 14C-AE0047 under the non-fasting condition decreased to one-third compared to that un der the fasting condition, indicating the effect of food intake on the absorption in rats. 4. In consecutive oral administrations of 14C-AE0047 for 14 days to rats, the levels of radioactivity in blood tended to increase gradually with dosing times. After the 14th administration, both Cm , or AUC in creased to 1.7 to 1.8 times, but the radioactivity was eliminated from the blood with the constant half-lives ir respective of dosing times. 5. The excretion of radioactivity in the urine and feces of rats within 168 hr after oral administration was 4.2 YO and 96.1% of dose, respectively. In the bile-duct cannulated rats, biliary excretion was 10.86 °/ , and 9.03°/ of the radioactivity excreted into bile was re-absorbed. On the consecutive administrations, the excre tion of radioactivity into urine and feces was almost constant, being 3.2% and 96.1%, respectively. The excretion of radioactivity in the urine and feces within 168 hr after an oral administration to dogs was 11.1% and 83.2%, respectively. 6. In the plasma of rat and dog, the unchanged AE0047 was mainly detected. After oral administration to rats, M1 and M6 were observed as minor metabolites in plasma, and M3 was detected as a major metabolite in urine. In the urine of rats, the unchanged AE0047 was not detected.
The Use of Rock Shelters During the Early Neolithic in the North of Alicante (Spain). The Site of Penya Roja de Catamarruc (Alicante, Spain) as a Case Study

Abstract The first Neolithic communities settled in the East of the Iberian Peninsula developed a complex strategy of land occupation. These strategies evolved as their social, demographic, and economic bases were transformed. In this paper, we focus on the analysis of archaeological sites located under rock shelters, which were recurrently occupied throughout the Early Neolithic. To deepen this analysis, we reviewed the archaeological record of Penya Roja de Catamarruc (Planes, Alicante), as well as other sites of similar characteristics. This information, combined with different spatial analyses – prominence, visibility, and capacity of use of the soils – allowed us to define a series of patterns of occupation and exploitation of the territory of the first Neolithic communities. This study highlights the importance of the forest as a resource related not only to hunting and gathering as traditionally seen, but also to shepherding.
Efficient preparation of multimetallic ONO-based Schiff base complexes of nickel(II) and copper(II)

A series of symmetrical D–π–D type complexes based on ONO tridentate Schiff base nickel(II) and copper(II) building blocks connected by a bidentate conjugated spacer [(R-ONO)M(μ-4,4′-bipy)M(R-ONO)] (M = NiII, R = An = anisyl (1), R = Fc = ferrocenyl (2); M = CuII, R = An (3), R = Fc (4); 4,4′-bipy = 4,4′-bipyridine) have been prepared in 70–85% yield. The four new compounds were characterized by elemental analysis, FT-IR and UV-vis spectroscopy, and by 1H-NMR spectroscopy in the case of the diamagnetic NiII derivatives 1 and 2. The molecular structures of complexes 1–3 were further confirmed by single-crystal X-ray diffraction methods, along with that of the doubly phenoxide-bridged derivative [Cu2(μ-Fc-ONO)2] 5, formed upon dissociation of the 4,4′-bipy spacer from 4. In 1, 2 and 5, the two four-coordinated nickel and copper atoms adopt a square planar geometry, whereas in 3 that forms a coordination polymer through apical Cu–O interactions (dCu–O = 2.411(5) A) between dimers, the CuII metal ion is five-coordinated in a square pyramidal environment. The electrochemical behavior of compounds 1–4 has also been investigated by cyclic voltammetry. Variable temperature (2–300 K) magnetic susceptibility measurements reveal a weak antiferromagnetic coupling (J = −0.83 cm−1) in 3, and that there is no interaction between the two CuII spins carriers in 4.
Comprehensive Study on Extraction of Rhenium with Acetone in Re-Os Isotopic Dating

The enperimental condition for rhenium extraction with acetone was studied comprehensively. The effect of amount of extracting reagent,alkalinity of the system,the extracting time on the extraction rate of rhenium and whether acetone should be washed by NaOH after extraction were studied. The optimized experiment condition provides high rhenium extraction rate and high separation rate of other metal elements.
The Role of Language Proficiency in Willingness to Communicate: A Case Study of Saudi EFL Learners

This study’s principal aim revolves around expanding comprehension of the facets affecting people’s readiness to use foreign languages. To achieve that, the study investigates the various elements of verbal interaction between undergraduate English as a Foreign Language learners and their instructors in the classroom. Linguistic skills are of particular interest, especially their connection to learners’ readiness to speak during classes. The research aims to answer the question ‘How does language proficiency affect the willingness to communicate among Saudi EFL students in the classroom? ’ Qualitative data was gathered through the implementation of a triangulation strategy that incorporated focus-group discussions and individual interviews. Moreover, the research takes inspiration from the work of MacIntyre (1994) and MacIntyre and Charos (1996), who focused on learners’ readiness to speak as the conceptual basis for their studies. The study shows that learners exhibit an unwillingness to speak in EFL settings due to perceived linguistic inadequacies, a limited lexicon and concerns that they may make mistakes when attempting to speak English, which would, in turn, prompt further misunderstandings. The study concludes with recommendations for further studies in similar institutions to investigate other factors that may influence students’ willingness to communicate.