Miracle-dz/UniFAR-FTUs huggingface dataset:
Estimating the value of beach recreation in Benin

ABSTRACT The economic valuation of recreation services provided by ecosystems is attracting increased research attention. This is also the case in developing countries and in Benin in particular. This study focuses on beach recreation and intends to inform public policies regarding the government’s seaside tourism development strategy and coastal regeneration programme. Based on a sample of 213 local, national and international visitors of Fidjrossè beach, the study provides the first estimation of consumer surplus for beach recreation services. It applies the Individual Travel Cost Method (ITCM), tests several count models, and adopts a negative binomial regression which best fits the data. The results highlight that beach recreation is preferred over other leisure activities by a majority of respondents, reflecting its worth as a recreational setting. The number of visits to the beach per year is determined by a variety of variables, including travel costs, visitors’ education level and sex. The estimated visitor surplus (XOF 512.69; USD 0.87 USD for the total expenses per visitor per visit) is fairly low and is discussed with regard to the methodological limitations of the study, methodological issues that still need further investigation and the structural specificities of tourism in Benin.
Genetic Variability Analysis of Yield and its Components in Niger [(Guizotia abyssinica (L. f.) Cass.]

Niger [Guizotia abyssinica (L.f.) Cass. ] belonging to family Asteraceae is minor oilseed crop with its center of diversity and origin in Ethiopia. Niger constitutes about 3% of Indian and 50% of Ethiopian oilseed production in the world. Niger is the only cultivated species of the genus Guizotia with a diploid plant chromosome number of 2n=2x=30 (Bisen et al., 2016). Niger seed belongs to the same botanical family as sunflower and safflower (Compositae). There are six species of Guizotia with G. abyssinica being the only the cultivated species. It is a dicotyledonous herb, moderately to well branched and grows up to 2 meter in height (Jagtap et al., 2014). Baagoe (1974) has revised this genus and recognized following species: G. abyssinica (L. f.) Cass. ; G. scabra (Vis.) Chiov. Subsp. scabra and subsp. schimperi (Sch. Bip.) Baagoe; G. arborescens I. Friis; G. reptans Hutch; G. villosa Sch. Bip. International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 7 Number 08 (2018) Journal homepage: http://www.ijcmas. com
Tourism and Economic Growth Nexus in Latin America and Caribbean Countries: Evidence from an Autoregressive Distributed Lag Panel

This research focuses on tourism as a way to stimulate economic growth in Latin America and the Caribbean countries. The impact of tourism on economic growth was expected to have both shortand long-run effects. Panel autoregressive distributed lag, an econometric technique that allows for this temporal decomposition, was used. The results for the twenty-two countries revealed that, in the short-run, tourist capital investment per capita, tourist arrivals (number of persons), per capita electricity consumption, and the real exchange rate were statistically significant and had a positive impact on economic growth. In contrast, in the long-run, only tourist arrivals and per capita electricity consumption proved to be positive drivers of per capita economic growth. Policymakers should continue to develop and implement measures to attract as many tourists as possible while promoting investment in the tourism industry. However, they also need to pay attention to other economic sectors so that their countries do not become extremely dependent on tourism activity.
Estimates of accessible food resources for pollinators in urban landscapes should take landscape friction into account

Maintaining biodiversity in urban landscapes requires a well-functioning green infrastructure for the landscape to remain ecologically functional. However, city planners often lack knowledge to identify how well different parts of the green infrastructure are connected, and tools to estimate the accessibility to important habitats for different species in urban areas are strongly needed. We compared the ability of three measures of available food resources, with increasing complexity, for explaining species richness and abundance of bees and wasps at 23 locations in an urban landscape in Sweden. Specifically, we tested (1) the summed amount of food habitat within a buffer circle, (2) the amount of food habitat weighted by distance, and (3) the summed amount of food habitat within an area created by cost-weighted distance based on the surrounding landscape friction. We tested two spatial scales (200 and 400 m). The results show that both the summed (1) and the weighted measures (2) were very poor in explaining species richness and abundance regardless of spatial scale, while we found significant relationships for both species richness and abundance with the friction-based measure (3) at both scales. For the friction-based measure, the relationships with both response variables were strongest at the smallest spatial scale (200 m). We conclude that bees and wasps are sensitive to barriers such as large roads and built-up areas when foraging in urban environments. This is important to consider when assessing the functionality of urban green infrastructure in order to not overestimate the available amount of habitat and how well different parts of the landscape are connected for these important pollinators.
Predicting Bond Returns: 70 Years of International Evidence

We use 70 years of international data from the major bond markets to examine bond return predictability through in-sample and out-of-sample tests. Our results reveal economically strong and statistically significant bond return predictability. This finding is robust over markets and time periods, including 30 years of out-of-sample data, prolonged periods of rising or falling rates, and a dataset of nine additional countries. Furthermore, the results are not explained by market or macroeconomic risks, nor can they be easily attributed to transaction costs or other investment frictions. These results reveal predictable dynamics in government bond returns relevant for academics and practitioners.
ARAH PERENCANAAN PEMBELAJARAN BAHASA ARAB ABAD 21

Abad 21 telah merubah gaya hidup manusia. Abad 21 berdampak pada pendidikan dan pembelajaran. Arah baru pembelajaran menurut UNESCO yang berisi tentang 4C (Collaboration, Communication, Creativity, dan Critical Thinking) mempengaruhi arah pembelajaran bahasa Arab di Indonesia. Hal itu menjadi faktor ekternal yang mempengaruhi arah pembelajaran bahasa Arab. Ditambah lagi faktor internal pembelajaran bahasa Arab yang tak kunjung selesai yaitu 1) pola pikir yang sudah terbentuk dalam benak siswa Indonesia bahwa belajar bahasa Arab masih sulit, 2) generasi milenial di indonesia masih menganggap bahasa Arab belum begitu penting dan hanya bahasa untuk mempelajari ilmu Agama, 3) masih dalam pandangan bahwa belajar bahasa Arab adalah belajar apa itu bahasa Arab bukan belajar bagaimana berbahasa Arab, 4) habit berbahasa Arab yang masih lemah atau kurang. Maka dari itu, penulis menyajikan dan merumuskan tentang konsep bagaimana arah perencanaan pembelajaran bahasa Arab di Indonesia perspektif abad 21. Halhal yang menjadi rumusan adalah 1) konsep standar pengajaran bahasa Arab abad 21, 2) konsep kebutuhan guru bahasa Arab dan pebelajar bahasa Arab abad 21, 3) konsep perencanaan pengajaran bahasa Arab dalam konteks masyarakat Indonesia
Fabrication and investigation of the mechanical properties of PVC/carbon fiber/graphene nanocomposite pipes for oil and gas applications

This article presents a novel plastic injection molding method for industrial manufacturing of polyvinyl chloride/carbon fiber/graphene (PVC/CF/Gr) nanocomposite pipes. In this method, the reprocessing cycles in the screw cylinder barrel and the fiber (embedded as the material) passes through the extruder lead to enhance Gr dispersion and orientation within the matrix. The mechanical properties of the manufactured nanocomposite pipes are evaluated through three standard tests, namely axial tension, axial compression, and transverse compression. From the experimental results, it is concluded that the second reprocessed PVC/CF/Gr composite demonstrates superior mechanical properties in comparison with the virgin composites. The results indicate an increase of 179% and 154% for Young’s modulus, along with an ultimate tensile strength at 2-wt% Gr with two reprocessing iterations in the cylinder barrel, respectively. Improvement in the mechanical properties of the PVC/CF/Gr composite produced by melt reprocessing could be due to strong interfacial interactions between the polymer matrix and the fibers.
Perturbation determinants and discrete spectra of semi-infinite non-self-adjoint Jacobi operators

We study the trace class perturbations of the half-line, discrete Laplacian and obtain a new bound for the perturbation determinant of the corresponding non-self-adjoint Jacobi operator. Based on this bound, we obtain the Lieb–Thirring inequalities for such operators. The spectral enclosure for the discrete spectrum and embedded eigenvalues are also discussed. In memory of Sergey Naboko (1950–2020) Introduction In the last two decades there was a splash of activity around the spectral theory of non-self-adjoint perturbations of some classical operators of mathematical physics, such as the Laplace and Dirac operators on the whole space, their fractional powers, and others. Recently, there has been some interest in studying certain discrete models of the above problem. In particular, the structure of the spectrum for compact, non-self-adjoint perturbations of the free Jacobi and the discrete Dirac operators has attracted much attention lately. Actually the problem concerns the discrete component of the spectrum and the rate of its accumulation to the essential spectrum. Such type of results under the various assumptions on the perturbations are united under a common name Lieb–Thirring inequalities. For a nice account of the existing results on the problem for non-self-adjoint, two-sided Jacobi operators, the reader may consult two recent surveys [7] and [10, Section 5.13] and references therein. The spectral theory of semi-infinite, self-adjoint Jacobi matrices is quite popular owing to their tight relation to the theory of orthogonal polynomials on the real line [19]. In contrast, there are only a few papers where semiinfinite, non-self-adjoint Jacobi matrices are examined [18, 1, 2, 8, 13, 14, 4]. The main object under consideration is a semi-infinite Jacobi matrix (0.1) J({aj}, {bj}, {cj})j∈N =   b1 c1 a1 b2 c2 a2 b3 c3 .   , Date: August 11, 2021. 2010 Mathematics Subject Classification. 47B36, 47A10, 47A75.
Tectono‐Stratigraphic and Thermal Evolution of the Western Betic Flysch: Implications for the Geodynamics of South Iberian Margin and Alboran Domain

The Betic‐Rif orogen is a key region to understand the evolution of the plate boundary between Africa and Iberia/Europe. This study focuses on the Flysch Complex, which is considered the sedimentary cover of a domain originally positioned between the Iberian and Alboran margins. Based on stratigraphic and depositional evolution constraints, evidence for salt tectonics, combined with new apatite fission‐tracks (AFT) and (U‐Th‐Sm)/He ages from the Flysch Complex and the Subbetic Zone, we propose a geodynamic interpretation for the formation of the Betic Cordillera, accounting for moderate N‐directed transport of the Flysch Complex and synchronous exhumation between External and Internal Zones of the Betic. Early contraction between Africa and Iberia/Europe is reflected in the Cretaceous Flysch basin by a prolonged period of residence in the partial annealing zone for AFT and onset of foreland subsidence at 50 Ma. This stage lasted until the Early to Middle Miocene (20–15 Ma), marked by the rapid succession, in less than 5 Ma, of the deposition of Cenozoic flysch and their rapid exhumation. This event is interpreted to reflect the W‐directed retreating mantle delamination between Africa and Iberia margins at the origin of the collapse of the proto‐Betic orogenic domain and formation of the Alboran domain.
Adipocytokine, leptin, and resistin in combination with quantitative visceral adiposity as predictors of colorectal neoplasm: A case-control study

Background: Substantial evidence has supported the association between adipocytokines and many types of cancers. However, the results in the setting of colorectal cancer (CRC) remains conflicting. Aim: This study aimed to evaluate the predictive power of adipocytokines (leptin and Rrsistin) levels and abdominal fat distribution in the diagnosis of colorectal cancer. Methods: Eighty participants were recruited then divided into three groups based on the endoscopic and histopathological investigation. The recruited individuals included 30 patients with colon cancer, 25 with colonic adenoma, and 25 controls. Serum adipocytokines (leptin and resistin) levels were measured, and the quantitative fat analysis was calculated based on an abdominal CT scan. Results: Multivariable logistic regression revealed that two predictors (leptin and resistin) of CRC development could be used. Visceral/superficial fat rate was the most significant predictor among the parameters of quantitative fat analysis. Also, psoas muscle and visceral fat volume showed significant differences among the study groups. Conclusion: Leptin and resistin can be used as a valuable independent predictor for the diagnosis of colorectal cancer. Also, the visceral/superficial fat rate was the most predictor.
Pathways of ocular entrainment in Marpissa marina (Araneae, Salticidae)

ABSTRACT Depending on the animal species, photoreceptors are located in the visual organs, in non-visual organs or in both. Because of unique characteristics of vision containing several different pairs of eyes, I chose the jumping spider (salticid) Marpissa marina (Araneae: Salticidae; Goyen, 1892) for this study. Eyes in spiders are categorized in two groups of principal and secondary. Specifically, my aim was to determine which eyes are dedicated to regulation of the central circadian rhythm and to illuminate the pathway(s) of ocular entrainment in jumping spiders. To achieve this, I used an opaque elastic paste to prevent entry of light to the photoreceptors. My procedure was to measure spider activity levels over eight days as well as spiders responses to a 6 h delay shift in light/dark cycle. This would be made first with uncovered eyes (and sham covers) and then with distinct pairs of eyes covered. The results revealed that, unlike the secondary eyes, light information gathered through AMEs did not lead directly or indirectly to the parts of the circadian system that contain circadian pacemakers.
Evaluation of efficacy of injection ferric carboxymaltose in pregnant women

Background: Iron deficiency anaemia (IDA) continues to be a very common problem in developing countries leading to a spectrum of adverse events in pregnant women. The objective of this study was to determine the efficacy, side effects and tolerance of ferric carboxymaltose as compared to available iron preparations for the prophylaxis and treatment of mild to moderate iron deficiency anaemia during pregnancy. Methods: One-year clinical study (from June 2017 to May 2018). A total 100 patients were enrolled after matching inclusion and exclusion criteria. The efficacy assessment was performed during 4, 8, and 12 weeks of starting therapy. If the patient is not responding to therapy in either arm as documented by no rise or fall in haemoglobin levels patients may be removed from study for other therapy. Treatment duration up to 12 weeks. Safety and efficacy follow-up visit at 4, 8 and 12 weeks. Institutional ethics committee permission was taken. Results: On intra-group comparisons there was significant increase in haemoglobin levels at 8 and 12 weeks in oral iron group as compared to day 1 haemoglobin levels while there was significant increase in haemoglobin levels at 4, 8 and 12 weeks in IV iron group as compared to day 1 haemoglobin levels. On intergroup comparisons between oral and IV iron group, there was significant increase in haemoglobin levels at 4, 8 and 12 weeks in IV iron group as compared oral iron group haemoglobin levels. Conclusions: Intravenous iron therapy with ferric carboxymaltose causes significant improvement in haemoglobin more quickly and more effective in correcting iron deficiency anaemia in pregnancy compared to oral treatment in terms of increase in haemoglobin levels at 4, 8 and 12 weeks. Intravenous ferric carboxymaltose is safe and effective option for pregnant women with iron deficiency anaemia.
Creative Self-Efficacy and Its' Relationship to Intellectual Stress among Gifted Students at the Jubilee School

Current study aimed at exploring Creative self-efficacy and its' relationship to intellectual stress among gifted students at jubilee school. Study sample consists of (N=100) of secondary intermediate stage students, Al-Zoubi scale (2014) to measure intellectual stress and Abbott scale (2010) to measure creative self-efficacy were used by researchers. Results reported that creative self-efficacy with its' two dimensions: creative thinking and creative performance among gifted students was in high degree, while intellectual stress level was in moderate degree. Study results also showed that no statistical differences attributed to class and sex variables, study revealed an inverse correlation between study dimensions, whenever efficacy increased in creative thinking and creative performance, intellectual stress is decreasing. Researchers recommend the importance of training gifted students' teachers on developing creative performance and thinking among gifted students, and provision therapeutic and counseling programs to decrease any psychological or intellectual stresses by holding workshops that expand enrichment and knowledge sides among teachers and gifted students.
Determination of protein in goat milk by different analytical methods

The objective of this study was to correlate the Biuret, Lowry, Bradford, and Mlikoscan methods used to determine the level of protein in goat's milk and compare them with the Kjeldahl method. Milk samples collected from 18 goats of breeds Saanen (n=5), Anglo-Nubian (n=4), Pardo-alpina (n=5), and Creole (n=4) were analyzed. Correlation analyses between the different methods were performed using the Pearson test and the protein content between different breeds was compared using ANOVA. Total protein (TP) and casein (CN) concentrations obtained by all methods studied were positively correlated with the Kjeldahl method (p<0.01). The Bradford method presented the lowest correlation coefficient. All methods apart from Bradford showed significant differences in TP and CN between the Anglo-Nubian and Pardo-alpina breeds (p<0.05). The Bradford method showed significant differences in TP between the Saanen and Pardo-alpina breeds (p<0.05), and no differences were found between breeds reegarding CN. In conclusion, the Bradford method had the lowest correlation value (TP and CN) with the Kjeldahl, and the Bradford method did not show the same pattern of differences between breeds in TP and CN, as was evidenced in all other methods. Therefore, the use of the Bradford method is not recommended to determine proteins in goat’s milk.
Is it time for transition from the subject-based to the integrated preclinical medical curriculum?

In the 60s of the last century, a number of new universities in the world began to apply an integrated program of medical education, the cornerstone of which was problem-oriented education. Thus, the Flexner model of higher education adopted by that time in most countries of the world, with its characteristic segregation of teaching of the theoretical and clinical disciplines, which had ceased to satisfy the needs of modern healthcare, was gradually replaced by a new system that put the student in the center of the educational process and opened the way to active methods of teaching being focused on the end result – training of graduates whose qualifications most fully satisfy the needs of society. Over the half-century history of its existence, this system has been adopted by most medical universities in different countries of the world, in many of which it has undergone significant modifications in accordance with the needs of national educational standards. Many medical universities in Russia and other countries of the former Soviet Union showed interest in this system, some of the medical faculties of our country accepted certain elements of it. However, up to date no integrated preclinical medical education program has been applied in any of the Russian universities. Hereby we are undertaking an attempt to analyze the reasons and assess the possible perspectives for the transition of medical universities in Russia to teaching of fundamental and biomedical disciplines using the integrated curriculum.
Patterns of iron and siderophore distributions across the California Current System

Coastal upwelling of nutrients and metals along eastern boundary currents fuels some of the most biologically productive marine ecosystems. Although iron is a main driver of productivity in many of these regions, iron cycling and acquisition by microbes remain poorly constrained, in part due to the unknown composition of organic ligands that keep bioavailable iron in solution. In this study, we investigated organic ligand composition in discrete water samples collected across the highly productive California Coastal upwelling system. Siderophores were observed in distinct nutrient regimes at concentrations ranging from 1 pM to 18 pM. Near the shallow continental shelf, ferrioxamine B was observed in recently upwelled, high chlorophyll surface waters while synechobactins were identified within nepheloid layers at 60–90 m depth. In offshore waters characterized by intermediate chlorophyll, iron, and nitrate concentrations, we found amphibactins and an unknown siderophore with a molecular formula of C33H58O8N5Fe. Highest concentrations were measured in the photic zone, however, amphibactins were also found in waters as deep as 1500 m. The distribution of siderophores provides evidence for microbial iron deficiency across a range of nutrient regimes and indicates siderophore production and acquisition is an important strategy for biological iron uptake in iron limited coastal systems. Polydisperse humic ligands were also detected throughout the water column and were particularly abundant near the benthic boundary. Our results highlight the fine‐scale spatial heterogeneity of metal ligand composition in an upwelling environment and elucidate distinct sources that include biological production and the degradation of organic matter in suboxic waters.
Does pornography consumption lead to intimate partner violence perpetration? Little evidence for temporal precedence

Abstract:The relationship between pornography use and violence has been extensively researched. Numerous studies suggest that the violent content depicted in pornography may be a risk factor for relationship violence. The current study, therefore, seeks to examine whether pornography use prospectively predicts a particular form of relationship violence—intimate partner violence. Using a large longitudinal sample of university students (N = 892) over a three-month time lag with two waves and a cross-lagged panel design, we found that pornography use does not prospectively predict the perpetration of intimate partner violence, and that the perpetration of intimate partner violence does not prospectively predict pornography use. Further, gender does not moderate these relationships. Finally, strengths, limitations, and directions for future research are discussed.