Miracle-dz/UniFAR-FTUs huggingface dataset:
Investors’ Attention and Its Effect on Saudi Stock Returns

The study examines the individual investor's intention effect of attention-grabbing stocks such as stocks in the news, stock experiencing high abnormal trading, and stocks with high returns. Attention driven trading results from an individual investor's ability to process information when being exposed to a large amount of information. The study includes Google’s Search Volume Index (SVI) as a proxy for investor attention. Thus, preferences of certain stocks determine decision making after attention has determined the selected stock in which trading is increased.
Missing Data Imputation for Geolocation-based Price Prediction Using KNN-MCF Method

Accurate house price forecasts are very important for formulating national economic policies. In this paper, we offer an effective method to predict houses’ sale prices. Our algorithm includes one-hot encoding to convert text data into numeric data, feature correlation to select only the most correlated variables, and a technique to overcome the missing data. Our approach is an effective way to handle missing data in large datasets with the K-nearest neighbor algorithm based on the most correlated features (KNN–MCF). As far as we are concerned, there has been no previous research that has focused on important features dealing with missing observations. Compared to the typical machine learning prediction algorithms, the prediction accuracy of the proposed method is 92.01% with the random forest algorithm, which is more efficient than the other methods.
Temporal and Spatial Distribution Characteristics of Air Pollution and the influence of Energy Structure in Guangdong-Hong Kong-Macao Greater Bay Area

Based on the panel data of 11 cities in GBA from 2010 to 2016, this paper uses spatial data analysis method to study the temporal and spatial distribution characteristics of air pollution, and the impact of energy structure on air pollution in GBA. The results show that the more serious air pollution is mainly distributed in Zhaoqing, Foshan, Jiangmen, etc. Air pollution has spatial correlation and obvious “path dependence” characteristics in spatial distribution. Secondly, the energy structure coefficient is positive, which means that the coal consumption increases 1%, the air pollution index will rise by 0.1381%. At the same time, a “U”-type relationship exists between per capita GDP and air pollution.
Financial Awareness Among the Teachers

People are vulnerable into economic difficulties if they do not have financial awareness. This study seeks to find out what the determinants of financial intelligence in junior and vocational school teachers in an area of West Java are. Our findings explain, in general, that teachers have relatively high financial awareness. Empirical tests suggest the financial awareness is influenced by an only one independent variable, namely a person's attitude. While the other independent variables such as family and individual perceptions are not significant at all. This finding proves the need for character education for everyone to have financial awareness. The reason is, the more mature a person, then the most determines everything in the life is his/ or her attitude, not anything coming from the family or something perceived so far.
Dioctofimosis canina: descripción de un caso clínico

RESUMEN: El autor describe un caso de parasitismo por Dioctophyme renale, resenando las caracteristicas clinicas propias con que se presento y el resultado de los examenes radiologicos, hematologicos y urinarios que fueron practicados, considerando que el caso constituye un aporte mas en el siempre polemico tema de la evolucion del parasito en el hospedador definitivo. Analecta Veterinaria 1(1): 35-41; 1969
Grass community responses to drought in an African savanna

Drought is often discussed as a major perturbation in savanna ecosystems, associated with lasting shifts in savanna structure and functioning. However, historically, droughts have occurred frequently in southern African savannas, suggesting that plants might benefit from being resilient to drought. Here, we evaluate whether the 2014–2016 drought was an extreme event in terms of effects on the herbaceous vegetation and specifically on grasses. We monitored herbaceous responses, pre-, during and post-drought in the Kruger National Park and compared responses with a previous extreme drought (1991–1992). Grass biomass decreased during both droughts, but recovered quickly once rains returned, regardless of whether areas burned in the years preceding drought. However, species functional composition was slower to recover, with shifts in dominance that closely matched grass photosynthetic machinery. Species drought tolerances were best predicted by their bundle sheath morphology: species characterised by XyMS− bundle sheaths (often associated with NADP-ME photosythesis) declined in abundance consistently during drought, whereas those characterised by XyMS+ bundle sheaths (associated with PEP-ck and NAD-ME photosynthesis) either increased or were unaffected by drought. The response of grass to drought, at least in terms of productivity and functional composition, is relatively predictable.
Genetic and chemical validation of Trypanosoma brucei adenosine kinase, the intracellular target of 4-[5-(4-phenoxyphenyl)-2H-pyrazol-3-yl]-morpholine

Human African Trypanosomiasis (HAT) is caused by African trypanosomes, a fatal disease if untreated. New safe and potent drugs are needed to treat HAT as the few available drugs are still unsatisfactory. The aim of the thesis is to understand the antiproliferative effect of compound 4-[5-(4-phenoxyphenyl)-2H-pyrazol-3-yl]-morpholine (1) which has recently been identified to hyperactivate Trypanosoma brucei adenosine kinase (TbAK). To this end, an ion-pair HPLC/UV method was developed and used to analyse changes in adenine purine levels of trypanosomes during different growth phases in absence or presence of 1. Several strains of Trypanosoma brucei were tested, e.g. i) the wild type strain, ii) a tetracycline inducible ak overexpression strain (hypothesizing that the presence of 1 is similar to overexpression of TbAK), and iii) a tetracycline inducible null mutant ak overexpression strain to provide insight into the effect of non-physiological high levels of TbAK on the parasite nucleoside/nucleotide metabolism.
The Impact of Gate Recess on the H₂ Detection Properties of Pt-AlGaN/GaN HEMT Sensors

The present work reports on the hydrogen gas detection properties of Pt-AlGaN/GaN high electron mobility transistor (HEMT) sensors with recessed gate structure. Devices with gate recess depths from 5 to 15 nm were fabricated using a precision cyclic etching method, examined with AFM, STEM and EDS, and tested towards H<sub>2</sub> response at high temperature. With increasing recess depth, the threshold voltage (<inline-formula> <tex-math notation="LaTeX">${V}_{\textit {TH}}$ </tex-math></inline-formula>) shifted from −1.57 to 1.49 V. A shallow recess (5 nm) resulted in a 1.03 mA increase in signal variation (<inline-formula> <tex-math notation="LaTeX">$\Delta {I}_{\textit {DS}}$ </tex-math></inline-formula>), while a deep recess (15 nm) resulted in the highest sensing response (<inline-formula> <tex-math notation="LaTeX">${S}$ </tex-math></inline-formula>) of 145.8% towards 300 ppm H<sub>2</sub> as compared to reference sensors without gate recess. Transient measurements demonstrated reversible H<sub>2</sub> response for all tested devices. The response and recovery time towards 250 ppm gradually decreased from 7.3 to 2.5 min and from 29.2 to 8.85 min going from 0 nm to 15 nm recess depth. The power consumption of the sensors reduced with increasing recess depth from 146.6 to 2.95 mW.
Investigation of dispersion and nonlinear characteristics of liquid core optical fiber filled with olive oil

This paper introduces a prospective material for photonic laser applications. Different high purity samples of olive oil were subjected to spectrophotometer to determine the absorption spectra. The transmission behavior of olive oil is about (44.28) % at wavelength of 532 nm, while it is (62.94) % at 1064 nm. Then, the nonlinear optical properties represented by nonlinear refractive index and nonlinear absorption coefficient are determined using a highly sensitive method known as Z-scan technique. Z-Scan experiment was performed using a 1064 nm CW Nd:YAG and 532 nm SHG Nd:YVO4 lasers. n2 = 3.99×10-6W/cm2 and beta = -0.0017 m/W for 1064nm wavelength and n2 = 2.45×10-7W/cm2 and beta =-7.26×10-4 m/W for 532nm wavelength. This paper gives simulation results for a liquid core optical fiber (LCOF) filled with olive oil. The nonlinear propagation constant and group velocity dispersion (GVD) properties are estimated. The simulation of generation of LCOF is also obtained. The calculations show that LOCF can provide huge nonlinear parameter and large span of slow varying GVD characteristics in the visible and infrared region, which have potential applications in optical communications and nonlinear optics. The material is olive oil which is classified as organic compound, having a good nonlinear optical properties making it a potential candidate to be for photonic applications.
MOLECULAR SYSTEMATICS OF CARDAMINE AND ALLIED GENERA (BRASSICACEAE): ITS AND NON-CODING

Representatives of the genera Cardamine, Dentaria, Nasturtium, Rorippa and Armoracia (Brassicaceae) were analyzed to elucidate their phylogenetic relationships based on nuclear (ITS) and non-coding chloroplast (cp) DNA sequences. Dentaria seems to be polyphyletic. The two studied Dentaria species group with different Cardamine clades, and it is argued that D. bulbifera is an allopolyploid originating from a hybridization between a Cardamine and a Dentaria species. In the ITS tree, Nasturtium and Rorippa form well supported clades but their relationship to Cardamine and Armoracia remains unresolved. In the cpDNA tree, Nasturtium groups together with Cardamine. Hybridization events apparently played a role in the evolution of Nasturtium. The CardaminelNasturtium clade is separated from a clade placing Rorippa and Armoracia together. Armoracia is closely related to Rorippa. Analyses of the 19 Cardamine species studied revealed three main groupings, a northern hemispheric and two southern hemispheric groups. Within the northern hemisphere taxa the C. pratensis complex forms a well supported clade which seems to be closely related to C. amara, C. raphanifolia and C. flexuosa. The positions of C. hirsuta and C. impatiens are uncertain. The two southern hemisphere clades consist of New Guinean species and south-eastern Australian/Tasmanian and subantarctic species, respectively. They may reflect migration routes from the northern to the southern hemisphere, but further studies are necessary to fully understand the evolution of the bihemispheric distribution pattern of Cardamine.
Where are the Fish? Using a “Fish as Food” Framework to Explore the Thunder Bay Area Fisheries

First published advance online December 16, 2019Thunder Bay is the largest city in Northwestern Ontario and is located on the northern shore of Lake Superior, the world’s largest freshwater lake. While fishing and fish consumption are significant parts of the Thunder Bay area’s food systems, the ability to purchase fish that are caught and processed in the region is extremely limited. While the lake once had an abundance of commercial fishing activity, today there are only a handful of commercial fishers left on the Canadian side and most of the catch is sold in the United States. In recent years, there have been growing efforts among community groups, local entrepreneurs, citizens, and Indigenous communities to enhance the sustainability of local food systems and ensure they can provide accessible, healthy, and culturally-appropriate foods, including fish. This article uses a “fish as food” framework to explore how policies and governance impact small-scale commercial fisheries in the Thunder Bay area’s food systems. Based on twenty-five interviews with a diverse range of actors involved in fisheries, as well as a review of policies in the interrelated areas of fisheries management and food systems, we look at the barriers and potential opportunities for reintegrating small-scale commercial fisheries into food systems in the Thunder Bay area. Our findings indicate that fisheries governance is dominated by top-down approaches to resource management, to the detriment of equity, livelihoods, and access to local fish for consumption.
Studying the Effects on Job Performance through Excessive Social Media Use at Work among Employees’

This study to identify the effects on job performance through excessive social media use at work among employees in the government sectors. In this research, analyze the relationship between three factors which are information overload, communication overload, and social overload through excessive social media use. The objectives in this study which are to investigate relationship between the information overload, communication overload, and social overload through excessive social media use on the job performance, and to measure the predictor of job performance. This study is quantitative in nature and questionnaires distributed to collect information from respondents based on 100 sample size. The data obtained through questionnaires was analyzed and evaluated by statistical test correlation and regression. However, most of the results show low and moderate relationship with job performance and communication overload through excessive social media use is the factors that more influence on job performance. Finally, limitation of study is also recognized and identified after the research is done. There are recommendations to the government sector and for future research to be conducted for better understanding in future.
Population Dynamics of Aphis gossypii (Glover) and its Associated Natural Enemies in Different Okra Varieties

An experiment to study the population dynamics of Aphis gossypii (Glover) and its associated natural enemies in different okra varieties was conducted at Malakander Research Farm of KPK Agricultural University Peshawar during 2009. Seven okra varieties including Saba Pirie, Ark Anamika, Pusa Sawani, Local Multani, Hybrid Nirali, Green Star and Sarhad Green were used in the experiment. Data was collected at weekly intervals for eight weeks, from first week of June to the last week of July for mean percent infestation of A. gossypii and its associated natural enemies. The data revealed that lowest mean percent infestation of 2.25% was recorded on Hybrid Nirali, while Sarhad Green was mainly attacked by A. gossypii with mean percentage of 3.39%. A. gossypii population increased during 1 st to 4 th week and ranged from 2.85% to 3.68%. It decreased during 4 th to 8 th week interval from 3.68% to 2.42%. The population of ladybird beetle was recorded lowest (1.25%) in Hybrid Nirali, while Sarhad Green afforded the highest numbers with mean percentage of 2.21%. The population of ladybird beetle increased by 2.76% ranging from 1.05% to 3.81% during 1 st to 4 th week intervals but gradually decreased (3.34%) ranging from 3.81% to 0.47% during 4 th to 8 th week intervals. The population of green lacewing was found lower at 0.87% in Hybrid Nirali, while higher in Green Star with 1.79%. The population of green lacewing gradually increased (1.95%) ranging from 0.95% to 2.90% during 1 st to 4 th week intervals but gradually decreased at 2.81% ranging from 2.90% to 0.09%, during 4 th to 8 th week intervals. Lowest population of Syrphid fly (0.62%) was recorded in Hybrid Nirali, while highest percentage (0.96%) was noted in Sarhad Green. No Syrphid Fly was found during 1 st and 8 th week intervals, the population of Syrphid Fly increased at 2.33% ranging from 0.00% to 2.33% during 1 st to 4 th week intervals but gradually decreased at 2.33% ranging from 2.33% to 0.00% during 4 th to 8 th week intervals. The data showed that Hybrid Nirali gave higher yield of 8980 kg ha -1 as compared to other okra varieties. It was concluded that Hybrid Nirali yielded more and also found comparatively more resistant to the attack of A. gossypii as compared to all other varieties.
Macroscopic sexual dimorphism in Fucus radicans (Phaeophyceae) with implications for its reproductive ecology

Abstract Sexual dimorphism on a macroscopic scale is unusual within the Phaeophyceae. We report for the first time macroscopic sexual dimorphism in Fucus radicans. A set of morphological characters was measured on three dioecious Fucus species, F. radicans, Fucus serratus and Fucus vesiculosus, to determine if sexual dimorphism occurs in the endemic F. radicans in the Baltic Sea and if it also is found in the other fucoids. F. radicans was sampled from highly clonal populations of the Bothnian Sea and from populations in the Väinameri Sea where no clones have been found. In both locations, sexual dimorphism was recorded in receptacle size and weight in F. radicans. Also, the receptacle dry weight to wet weight ratio was higher in males than in females, showing that male receptacles have a lower water content than females. The dimorphism was more pronounced in the Bothnian Sea populations, where further differences between the sexes in thallus width and fertility index also were present. This has not been shown for any member of the genus Fucus before, but seems to be a species-specific character in F. radicans, as there were no differences between the sexes in either F. serratus or F. vesiculosus.
Devising a Method to Optimize the Investment Structure Aimed to Achieve Strategic Targets in the Socio-Economic Development of Regions

A method has been proposed to form the optimal structure of regional state investments, which contributes to the strategic goals and objectives of the socio-economic development of a region through the advanced development of human capital. The dynamic model has been considered representing a mathematical programming problem, which describes in the form of recurrent dependences the chain of channels of influence: "the structure and volume of investments→the indicators of the regional human capital→the indicators for the socio-economic development of a region". The weighted average of degrees in achieving the target values of resulting indicators of socio-economic development of a region on the considered horizon of planning has been used as the objective function. Recurrent dependences are the lag econometric models of panel data involving the main components. To construct three types of models (the through models, those with the deterministic and random spatial effects) using the Best Subset method, the open-source software R was employed. The best models were chosen with the help of tests by Wald, Hausman, and Breusch–Pagan. The limitations within the model are a series of assumptions about the processes of the development of human capital and the socio-economic development considering the uncertainties. The optimization variables are shares of the distribution of investment resources based on the investment directions and years. Based on the results of modeling and numerical calculations on the example of several regions of Russia in dynamics over the years, the optimal investment structure has been proposed. A given structure enables making the maximum progress towards achieving the target values of strategic indicators of the development of a region through the development of human capital
Effect of mono-dopants (Mg2+) and co-dopants (Mg2+, Zr4+) on the dielectric, ferroelectric and optical properties of BaTiO3 ceramics

In this work, BaTiO3, Ba(Mg0.01Ti0.99)O3, Ba(Mg0.015Ti0.985)O3, Ba(Mg0.02Ti0.98)O3 and Ba(Mg0.01Zr0.15Ti0.84)O3 ceramics have been prepared through conventional solid-state route to investigate the effects of Mg2+ and Zr4+ dopants as mono-substitution (only Mg2+) and co-substitution (Mg2+ and Zr4+) of B-site on the structural, electrical and optical properties of BaTiO3 ceramics. Exhibiting perovskite structure, Ba(MgxTi1−x)O3 ceramics revealed a decrement pattern of tetragonality with the increment of the concentration of MgO which was confirmed through Rietveld analysis. Morphological analysis of the sintered samples by scanning electron microscope showed a grain growth retardation phenomenon with Mg2+ addition. Releasing from this retardation process, Ba(Mg0.01Zr0.15Ti0.84)O3 showed a maximum dielectric constant of ∼1269.94 due to the enhanced domain wall motion and the confinement within the solubility limit of Mg2+. The ferroelectric characteristic of Ba(MgxTi1−x)O3 was sluggish due to the effects of grain size and its boundary. The optical band gap for BaTiO3 was found to be decreased from 3.55 eV to 3.06 eV with the addition Mg2+ content but for Ba(Mg0.01Zr0.15Ti0.84)O3, the value increased due to the Burstein-Moss effect. Again the FTIR analysis proved that no impurity phases were formed during the doping phenomenon, but in Ba(MgxTi1-x)O3 ceramics, a significant reduction of Ti-O bond strength was observed. However, BaTiO3, Ba(Mg0.01Ti0.99)O3, Ba(Mg0.015Ti0.985)O3 and Ba(Mg0.02Ti0.98)O3 ceramics had manifested P-E loop having lower remanent polarization and coercive field compared to Ba(Mg0.01Zr0.15Ti0.84)O3 ceramics with moderate electrical and optical properties. So, co-doping with Mg2+ and Zr4+ evidenced a favorable accession for the increment of the properties of BaTiO3 ceramics.
How do dragonfly wings work? A brief guide to functional roles of wing structural components

Insect wings have no flight muscles, except those situated in the thorax. However, they continuously respond to forces acting on them during flight. This ability is achieved by the specialised design of the wings and plays a key role in their aerodynamic performance. Dragonfly (Anisoptera) wings represent an extreme example of this automatic shape control among flying insects. The functionality of the wings results from complex interactions between several structural components of which they are composed. Here we put together the results of our recent works, to review the functional roles of some of the key wing components including vein, membrane, vein microjoint, nodus, basal complex and corrugation. Our results help to understand the relationship between the structure, material and function of each of these wing components in complex dragonfly wings. We further use our data to explain how the interactions between the wing components provide dragonflies with fully functional wings.
Cramer-Rao Bound on DOA Estimation of Finite Bandwidth Signals Using a Moving Sensor

In this paper, we provide a framework for the direction of arrival (DOA) estimation using a single moving sensor and evaluate performance bounds on estimation. We introduce a signal model which captures spatio-temporal incoherency in the received signal due to sensor motion in space and finite bandwidth of the signal, hitherto not considered. We show that in such a scenario, the source signal covariance matrix becomes a function of the source DOA, which is usually not the case. Due to this unknown dependency, traditional subspace techniques cannot be applied and conditions on source covariance needs to imposed to ensure identifiability. This motivates us to investigate the performance bounds through the Cramer-Rao Lower Bounds (CRLBs) to set benchmark performance for future estimators. This paper exploits the signal model to derive an appropriate CRLB, which is shown to be better than those in relevant literature.