Miracle-dz/UniFAR-FTUs huggingface dataset:
Keyphrase Ranking Based on Second Order Co-Occurrence Analysis

State-of-the-art researches in unsupervised automatic keyphrase extraction focused on graph analysis. Keyphrase ranking is critical step in graph-based approaches. In this paper, we follow two main purposes including choice of good candidate phrases and computing importance of candidate phrase by considering the mutual information between words. Our documents representation improves the process of candidate phrases selection by constructing a single graph for all documents in the collection. We enjoy from parallel minimum spanning tree to prune irrelevant edge relations. We also consider second order co-occurrence of words by point-wise mutual information as a similarity measure and importance of terms to increase the performance of keyphrase ranking. We formed a single graph of cooccurrence network for all documents in the collection and analyze co-occurrence network with different settings. We compare our method with three baseline approaches of keyphrase extraction. Experimental results show that applying second order co-occurrence analysis improves keyphrases identification accuracy.
Capital Structure Choice of Bangladeshi Firms: An Empirical Investigation

This study endeavors to investigate the impact of firm specific factors on capital structure decision for a sample of 44-firm listed on Dhaka Stock Exchange (DSE) during the period of 2004-2011. To achieve the objectives, this study tests a null hypothesis that none of the firm’s specific factors such as, liquidity, market to book, collateral, dividend payment, profitability, size and industry classification has significant impact on leverage using estimate of fixed effect model under Ordinary Least Square (OLS) regression. Checking multicollinearity and estimating regression analysis through Pearson correlation model respectively this study found that profitability, collateral and liquidity have significant and negative impact on leverage. Positive and significant impact of market to book value ratio on leverage has been found in this study. On the other hand, dividend payment and size were not found as significant explanatory variables of leverage. Results also expose that total debts to total assets ratios are significantly different across Bangladeshi industries.
Creating a Komering Dictionary based on the Semantic Domain Approach

There are many endangered languages in the world, especially in Indonesia which has 719 individual languages. One of the endangered languages in Indonesia is Komering language, a language that exists in South Sumatera. This language is labeled 6b or Threatened by Ethnologue. This study aims to propose a concept for creating a dictionary of Komering language based on the semantic domain of daily life and using the software called WeSay. The theory of semantic domain is based on Moe (2003). By conducting an interview with four native Komering people, it is discovered that there are 114 words in the “food” subdomain. Thirteen words of this subdomain are found to have been excluded from the dictionary due to five possible causes. These causes are expected to be corrected in the future when making the dictionary. The dictionary database which has been constructed using WeSay is expected to add the resource for creating a better Komering – Indonesia language dictionary in the future.
Systematic doping evolution of the underlying Fermi surface of La2-xSrxCuO4

We have performed a systematic doping-dependent study of ${\mathrm{La}}_{2\ensuremath{-}x}{\mathrm{Sr}}_{x}\mathrm{Cu}{\mathrm{O}}_{4}$ (LSCO) $(0.03\ensuremath{\leqslant}x\ensuremath{\leqslant}0.3)$ by angle-resolved photoemission spectroscopy. Over this entire doping range, the underlying ``Fermi surface'' determined from the low-energy spectral weight approximately satisfies Luttinger's theorem, even down to the lightly doped region. This is in strong contrast to the results on ${\mathrm{Ca}}_{2\ensuremath{-}x}{\mathrm{Na}}_{x}\mathrm{Cu}{\mathrm{O}}_{2}{\mathrm{Cl}}_{2}$ (Na-CCOC), which show a clear deviation from Luttinger's theorem. We correlate these differences between LSCO and Na-CCOC with differences in the behavior of chemical potential shift and spectral weight transfer induced by hole doping.
The comparison of estimation methods on the parameter estimates and fit indices in SEM model under 7-point Likert scale

In this article, the author discusses the issues and problems associated with the influence of different estimation methods on the level of obtained parameters and goodness-of-fit of a Structural Equation Model (SEM) in the context of data measured on a 7-point Likert scale. Thus, the objective of the conducted analysis was to compare the selected methods of estimation such as maximum likelihood (ML), maximum likelihood mean adjusted (MLM), maximum likelihood mean-variance adjusted (MLMV), weighted least squares (WLS), weighted least squares mean adjusted (WLSM) and weighted least squares mean-variance adjusted (WLSMV) on the basis of respective parameter statistics, for which the quality of the SEM model fit was assessed. Eventually, among the presented methods, the best estimation procedure was selected. The area of empirical study and the subject of investigation refers to the opinion of consumers about the unethical behavior of companies in the area of marketing.
Financial development and economic growth in Cameroon, 1970-2005

In this work we investigated the relationship between financial development and economic growth in Cameroon using time series data for the period 1970-2005. Using the Johansen method of cointegration analysis and various measures of financial development, we find that financial development has a positive effect on economic growth in the long run through efficient collection and allocation of financial resources. Also, we find a long term causality relationship running from financial development to economic growth. We therefore propose that the ongoing financial reforms in the country should be pushed forward so as to boost the development of this sector and by that increase its role in economic development. Key words: Financial development, economic growth, Cameroon.
Removal of CO2 from flue gas at high temperature using novel porous solids

Since the CO2 separation is the first and most energy intensive step of carbon capture and storage (CCS) technology, many research have targeted at improving the current technologies or developing new approaches of CO2 separation and capture. In this study, lithium orthosilicate-based pellets were developed and characterized as potential regenarable high-temperature CO2 sorbents. A mechanical method was used for pelletization of the powdered materials, namely K2CO3-doped lithium silicate (Li4SiO4). For increasing the performance of the pellets over multiple cycles an activation strategy was applied: the powdered sorbents were pelletized with a binder for enhancing their porosity by applying a thermal activation before adsorption process. Different amounts of binders (layered graphite and carbon nanotubes) were added to powered doped-sorbent in order to identify the optimal amount to ensure an adequate porosity into the pellets. The CO2 sorption properties of the obtained pellets were investigated by using a thermal gravimetric analyzer (TGA) in a controlled gas flow environment at low CO2 partial pressure (0.04 atm). Compared to the pure K2CO3-doped lithium silicate pellets, the sorbents prepared using layered graphite showed greater CO2 capture capabilities, which were ascribed to the higher porosity developed as a result of the activation. At 580 °C and a CO2 partial pressure of 0.04 atm, the uptake of CO2 in pellets prepared with 20 % of graphite reached about 200 mg CO2/g sorbent within 120 minutes corresponding to a Li4SiO4-conversion of 72.1 %. During multiple sorption/desorption cycles, a decay of the sorption capacity of the pellets was observed due to a partial sintering of the materials.
Comparative Studies in the Release of Sodium and Potassium Ions by Indigenous Black Soaps from some Selected Skin Pathogens

The indigenous black soap possesses antimicrobial activities with varying mechanisms of action. In the present study, the comparative release of sodium and potassium ions from clinical isolates: Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae, Trichophyton rubrum and Candida albicans by three different indigenous black soaps were investigated by flame photometry method. The black soaps were subjected to qualitative and quantitative screening for phytochemical using standard methods. Sodium ion was leaked to a value of 833 ppm for S. aureus while potassium ion to a value of 20 ppm for T. rubrum. Qualitative and quantitative screening for phytochemicals showed saponin was the highest with values between 20.50-33.31 mg gG while tannin the lowest between 1.05-2.05 mg gG across the black soap samples. This study has posited that the antimicrobial activities of the black soap may be attributed to its phytochemicals and that the soap has lytic effect on the pathogens.
Returns to Type or Tenure? Job Matching Processes of the Well-Educated ⁄

Many studies investigating wage-tenure proflles flnd that white-collar employees have steeper proflles in tenure than blue-collar workers. This paper takes a closer look at a more homogeneous group of individuals, namely individuals who have obtained the highest secondary degree. Using the German Socio-Economic Panel (GSOEP), we flnd that among those well educated individuals longer tenure does not necessarily re∞ect a higher productivity of an employee. In particular, we flnd that those types who stay shorter have higher returns to tenure but earn less on average. Our control function approach to estimation allows us to disentangle this from estimates of general returns to tenure which we flnd to be rather low. Furthermore, the wage proflles of white collar workers appear to be substantially difierent between college graduates and non-graduates. Individuals with a college degree obtain steeper proflles. Our results suggest that certain majors are responsible for the difierent shapes since the steepness is particularly pronounced for degrees in Social Science and Medicine.
Asymmetric Stereoscopic Images Coding using Perceptual Model

: Significant research works have been devoted to asymmetric stereoscopic coding technique. Based on the perceptual theory of binocular suppression, in this method, one view of the stereo pair can be coded with a lower quality than the other, thus allowing to decrease bandwidth requirement for 3D visual content delivery without degrading subjective quality. However, with the condition that the quality gap between both images does not exceed a certain threshold. Some works proposed to fix this threshold by subjective experiments. Nevertheless, using a fixed threshold does not allow adaptation to the stereo image content and presents dependency to the experimental design. In this paper, we propose a novel method that selects automatically the maximum tolerable quality gap between views for different stereo image pairs. This has been achieved by modeling the relationship between the asymmetric quality and the interview distortion between corresponding pixels. Then, the derived relationship is combined with Binocular Just Noticeable Difference (BJND) model to control the quality threshold between the left and right views. Experimental results showed that the proposed coding method can achieve considerable bitrate saving up to 16.32% and outperforms the widely used asymmetric coding approaches.
UAV-BASED DETECTION OF UNKNOWN RADIOACTIVE BIOMASS DEPOSITS IN CHERNOBYL’S EXCLUSION ZONE

Abstract. Shortly after the explosion of the Chernobyl nuclear power plant (ChNPP) in 1986, radioactive fall-out and contaminated trees (socalled Red Forest) were buried in the Chernobyl Exclusion Zone (ChEZ). These days, exact locations of the buried contaminated material are needed. Moreover, 3D vegetation maps are necessary to simulate the impact of tornados and forest fire. After 30 years, some of the so-called trenches and clamps are visible. However, some of them are overgrown and have slightly settled in the centimeter and decimeter range. This paper presents a pipeline that comprises 3D vegetation mapping and machine learning methods to precisely map trenches and clamps from remote sensing data. The dataset for our experiments consists of UAV-based LiDAR data, multi-spectral data, and aerial gamma-spectrometry data. Depending on the study areas overall accuracies ranging from 95.6 % to 99.0 % were reached for the classification of radioactive deposits. Our first results demonstrate an accurate and reliable UAV-based detection of unknown radioactive biomass deposits in the ChEZ.
LOFAR Discovery of a 23.5 s Radio Pulsar

We present the discovery of PSR J0250+5854, a radio pulsar with a spin period of 23.5 s. This is the slowest-spinning radio pulsar known. PSR J0250+5854 was discovered by the LOFAR Tied-Array All-Sky Survey (LOTAAS), an all-northern-sky survey for pulsars and fast transients at a central observing frequency of 135 MHz. We subsequently detected pulsations from the pulsar in the interferometric images of the LOFAR Two-meter Sky Survey, allowing for subarcsecond localization. This, along with a pre-discovery detection 2 years prior, allowed us to measure the spin-period derivative to be s s−1. The observed spin period derivative of PSR J0250+5854 indicates a surface magnetic field strength, characteristic age, and spindown luminosity of G, 13.7 Myr, and erg s−1, respectively, for a dipolar magnetic field configuration. This also places the pulsar beyond the conventional pulsar death line, where radio emission is expected to cease. The spin period of PSR J0250+5854 is similar to those of the high-energy-emitting magnetars and X-ray dim isolated neutron stars (XDINSs). However, the pulsar was not detected by the Swift/X-Ray Telescope in the energy band of 0.3–10 keV, placing a bolometric luminosity limit of erg s−1 for an assumed cm−2 and a temperature of 85 eV (typical of XDINSs). We discuss the implications of the discovery for models of the pulsar death line as well as the prospect of finding more similarly long-period pulsars, including the advantages provided by LOTAAS for this.
Cytology of Vicia species. IX. Nuclear DNA amount, chromatin organization and computer aided karyotyping of a Russian accession of Vicia faba.L

Abstract The Faba section of the Vicia genus, which includes several widely distributed species in Mediterranean countries is considered the most evolved. Indeed, it is known nuclear DNA values range from 9.15 pg. (2C value) in Vicia bithynica, to 26.56 pg. (2C value) in Vicia faba which has the highest DNA content in the genus. Banding pattern of metaphase chromosomes and nuclear DNA content in root meristematic cells of a Russian accession of V. faba were determined.Microdensitometric evaluation of nuclear absorption at different thresholds of optical density after Feulgen reaction indicated the organisation of the chromatin in-terphase nuclei. Karyotype, morphometric data and density distribution along the mid-rib of a chromatid were employed for the construction of a quantitative chromosome map generated by an automated image analysis system. The classification of Stebbins(1971), the TF%% values (Huziwara 1962) and Rec. and Syi indices (Greilhuber and Speta 1976) were used to perform the analysis. The results are compared with previous data concerning V. faba.
Area Analysis for On-chip Routers with Different Data-link Widths

Compared with the traditional and inter-chip networks, on-chip networks (NoCs) have enormous wire resources which can be traded for improving other performance requirements. This means that much wider data links can be used for NoCs. This paper focuses on the area costs for on-chip routers under four different data-link widths: 8 bits, 16 bits, 128 bits, and 256 bits. Firstly, a virtual-channel based on-chip router is introduced. Secondly, the components of the router are implemented by Verilog HDL models and synthesized by Quartus II 4.0 in a FPGA device. Finally, the area costs are analyzed. It can be seen from the results that data-link width has great influence on area costs of buffers and crossbar while has no influence on area costs of arbiter.
Water relations in physic nut according to climatic seasonality, in semiarid conditions

The objective of this work was to determine the effect of climatic seasonality on physic nut (Jatropha curcas), in field, under semiarid climate conditions. Stomatal conductance (gs), transpiration (E), soluble leaf carbohydrates (SLC), free amino acids (FAA) and total proteins (TP) were measured in leaves, in a commercial plantation in Northeast Brazil, during the summer and autumn. Plants showed high gs and E, as well as SLC, FAA and TP contents in the summer, which gradually decreased with the lower temperatures and photosynthetically active radiation during the autumn, despite the higher water availability. Even in conditions of adequate water availability, the combination of low temperatures and reduced light drastically decreased foliar metabolism.
Investigation of the Process- and System-Induced Activation of Material Reactions during Discontinuous High-Frequency Welding

Besides weldable component geometries for the high-frequency welding process also possible process and system induced activated material reactions during discontinuous high-frequency welding are presented in this paper. Among others such material reactions can be a locally limited thermal influence on the base metal, defined plastic derformations during the upsetting process as well as grain refinement in the weld seam, comparable to thermomechanical treatment during rolling for increasing strength or ductility.
Effect of Feeding Different Levels of Concentrates on Buffalo Calves Performance, Digestibility and Carcass Traits

2 Abstract: Six-month experiment was carried out in order to investigate the effect of concentrate levels on performance of buffalo calves. Twenty-one male buffalo calves with average body weight of about 286 kg divided into three equal groups were randomly assigned to the following concentrate levels. , 70,85 and 100% of the concentrate feed mixture (groups A. B and C, respectively). Allowance of the concentrates was offered to all animals twice a day at 8 a.m. and 2 p.m. in equal portions while roughage (rice straw) was available at all time. Body weight, feed intake and feed conversion were determined. Acid insoluble ash was used to determine digestibility. At the end of the experiment all calves were slaughtered and carcass traits were recorded. No differences between groups regarding the change in body weight were detected. Calves fed 100% concentrate gained more than the other two groups in all experimental periods. The overall average feed intake for groups A. B and C were 8.65, 9.81 and 11.11 kg/d, respectively. Feed conversion was better for the 70% group than the control. No differences were found regarding the digestibility of all nutrients as a result of feeding different concentrate levels during summer season. However, during winter season some differences were found regarding digestion coefficients of DM and CP being higher in group C than the other groups. Heavier weights of carcass, bone and boneless meat were obtained from calves of group C comparing to the group and group B which had non significant less values than group C. Dressing percentage was higher (P<0.05) in groups B and C than group A. Meat to fat ratio followed the same pattern of dressing percentage.
Factors affecting urban demand for live sheep: the case of Addis Ababa, Ethiopia.

As the share of small ruminant meat, especially sheep, in the demand and consumption of meat in general grows, information about consumer expenditure behaviour and demand parameters for live sheep will be valuable for several interest groups in the sheep industry. Using the Heckman two-stage approach, this study shows that sheep prices and household income, as well as socio-demographic factors, including household size and composition, significantly affect the likelihood of buying live sheep and expenditures on live sheep. Projections of live sheep demand and supply in Addis Ababa in 2010 and 2020 show that sheep producers in Addis Ababa alone will be able to meet up to only 27% of the demand.
Hydroxypropyl Methacrylate Interaction and Chitosan Coating for Enhanced UV Detection Sensitivity of Colloidal Nanoparticles in Capillary Electrophoresis Analysis

The binding interactions between silica (SiO2), titania (TiO2) or polymeric nanoparticles with hydroxypropyl methacrylate (HPMA) were investigated for enhancing the ultraviolet (UV) detection sensitivity of these nanoparticles in capillary electrophoresis (CE) analysis. HPMA interacted with colloidal SiO2 nanoparticles, producing a larger CE-UV peak at a slightly shorter migration time. An increase in particle size with HPMA binding was validated using dynamic light scattering. The interaction was selective as HPMA did not interact with TiO2 nanoparticles in aqueous suspension. Chitosan coating of SiO2 or TiO2 nanoparticles produced significantly larger hydrodynamic diameters to further enhance the sensitivity of their UV detection. The analytical technique, which involves coating SiO2 nanoparticles with chitosan first and binding with HPMA next, is novel. It has allowed us to achieve a significant enhancement of 50 folds in detection sensitivity.
Effect of dietary protein source on piglet meat quality characteristics

An experiment was conducted to examine the effects of different dietary protein sources (soybean meal vs whey protein) on piglet meat quality characteristics. Eighteen castrated male Large White × Duroc × Landrace piglets were randomly assigned to 2 groups. Piglets were kept in individual metabolic cages and fed ad libitum over a period of 38 days the following 2 diets: diet SB, which was formulated to meet the nutrient requirements of piglets using soybean meal as the main crude protein source and diet WP, where SB was totally replaced by a mixture of whey proteins on equal digestible energy and crude protein basis. At the end of the experiment, piglets were weighed and slaughtered. After overnight chilling, samples of Longissimus dorsi muscle were taken and were used for meat quality measurements. No significant differences were observed in the values of pH, color, water holding capacity, shear force and intramuscular fat content of L. dorsi muscle between the dietary treatments. Measurement of lipid oxidation values showed that dietary supplementation with different protein sources did not influence meat antioxidant properties during refrigerated storage. The SB piglets had lower C14:0 (P<0.01) and higher C18:3n-3 (P<0.001) levels in intramuscular fat in comparison with WP piglets. However, these changes were attributed to background differences in the dietary FA profile and not to a direct protein source effect. The results of this preliminary study indicate that the examined dietary protein sources do not have a significant effect on meat quality characteristics of piglets.