Miracle-dz/UniFAR-FTUs huggingface dataset:
The Effect of Realistic Mathematics Approach and Self-Efficacy on Students’ Mathematical Problem Solving Ability in Fifth Grade Student of Gracia Sustain Private Elementary School Medan

— This study aims to determine: (1) the effect of realistic mathematics approach on student mathematics problem-solving ability; (2) the effect of self-efficacy on student mathematics problem-solving ability; (3) the interaction between realistic mathematics approach and self-efficacy on student mathematics problem-solving ability. This research is a quasi-experimental research. The population research is students of class V-A, V-B, and V-C Gracia Sustain Private Elementary School. The sample in this research is class V-A as the control class that consists of 30 students which were taught using the conventional approach and for class V-B for the experimental class which was taught using realistic mathematics approach. The instruments used were: (1) mathematics problem-solving test, that was essay test; (2) self-efficacy questionnaire sheet. These instruments had fulfilled the terms of validity and reliability coefficient. The findings of the research showed that: (1) there are effects of realistic mathematics approach towards student mathematics problem-solving ability. It is shown by the mathematics problem-solving outcomes of students who received the realistic mathematics approach got mean score as 78,37 while the mathematics problem-solving outcomes of student who received the conventional approach got mean score as 67,70; (2) based on the results of data calculations can be seen that the mathematics problem-solving ability on students who have high self-efficacy got mean score as 79,38 while the mathematics problem-solving ability on students who have low self-efficacy got the mean score as 64,18; and (3) the hypothesis result testing showed that there is no interaction between the use of realistic mathematics approach and self-efficacy towards students mathematics problem-solving ability. ability, and self-efficacy.
Thai Students' Attitudes and Concepts of Technology

Introduction Of the eight major programs mentioned in Thailand’s Eighth National Education Development Plan (1997-2001), one is aimed at developing human capability in the areas of science and technology. This is to address the fact that the teaching of technology in Thailand is lagging behind the technological changes of the last decade. Part of this reform effort is the development of conceptual based learning activities in science and technology for 12 to 15-year old students. These concepts are being introduced through the offering of a subject at the high school level. de Klerk Wolters (1989) indicated learning the concepts of technology is necessary and should be required for all students of this age range. Cross and McCormick (1986) added that students in both primary and secondary schools need to learn to solve technological problems in creative ways. Students also should understand the nature of technology. Understanding technology is just as important for Thai students as it is for students in other countries. In order to develop a student’s technological literacy, de Klerk Wolters (1989) suggested that it is important to take into account pupils’ interests, opinions, and needs when developing technological curriculum. An understanding of students’ knowledge of and attitudes toward technology is necessary and prerequisite to effective teaching about technology (Bame, Dugger, de Vries, & McBee, 1993). These concerns led to the development of the Pupils’ Attitude Towards Technology (PATT) project. The first Pupils’ Attitude Towards Technology project was established by Jan Raat and Marc de Vries in 1984 at the University of Technology in Eindhoven in the Netherlands. The main purpose was to assess what attitudes students, aged 11 to15, had toward technology. It became evident through the PATT research that the students had incomplete and vague concepts of technology. There also appeared to be great differences between boys and girls in their attitudes toward technology. Since this beginning, the PATT research has been conducted in over 22 countries, ___________________________
Perception regarding pubertal changes among rural adolescent boys of Haryana: A school based study

Background: Adolescence is a transition phase through which a child matures into an adult. The physical changes in the human body are from infant to child to adolescence to adult to old age. All phases of life behave like a coin with both good and bad facets attached to each phase of life. Aims & Objectives: 1. To study perception and awareness regarding pubertal changes among school going adolescent boys. 2. To study the association between education and perceived pubertal problems among study subjects. Material & Methods: The study was conducted among male students of senior secondary schools of community development block Beri in one year. The study universe comprised of students in middle and late adolescence (aged 14-18 years) studying in 9th to 12th classes of the senior secondary schools in the area. A total of 1000 male students were selected from these schools which were more than the required sample size of 891. Results: The study found that 42.66% students and a half (50%) of students of class 9th & 10th and class 11th & 12th respectively considered that pubertal changes as a normal phenomenon. The majority of students admitted practicing masturbation and felt shy and guilty for practicing masturbation, also students felt fatigued after night emission. Conclusions: The study concludes that adolescent’s sexuality which often causes controversy and concern among adults is least discussed with them during adolescence. The reasons for this may be many, including moral grounds or because of concomitant health risks and threats to wellbeing.
Occurrence and antimicrobial susceptibility pattern of ESBL-producers among Gram-negative bacteria isolated from burn unit at the Al Shifa

Background: Bacterial infection can be an important cause of death in burn cases. The emergence of antimicrobial resistant pathogens associated with extended spectrum beta-lactamases (ESBLs) is leading to inappropriate/or treatment failure and increased morbidity and mortality. Objective: The purpose of this study was to determine the antimicrobial susceptibility pattern with the identification of ESB -producers among pathogens isolated from burn patients at the Al-Shifa burn unit in Gaza, Palestine. Methods: A total of 40 gram-negative bacterial isolates were recovered from burn wound patients between August 2012 and December 2012. Antibiotic susceptibility profiles of the identified isolates were determined by the standard disc diffusion method according to CLSI guidelines. The ESBL detection was screened by using double disc diffusion method. Results: Pseudomonas aeruginosa was the predominant isolate 15 (37.5%) followed by Klebsiella pneumoniae 10 (25%), Escherichia coli 9 (22.5%), Enterobacter cloacae 4 (10%) and Acinetobacter baumannii 2 (5%). ESBL was detected in 37.5% of isolates. Most of ESBL-producing THE INTERNATIONAL ARABIC JOURNAL OF ANTIMICROBIAL AGENTS
Protective Effects of Silymarin against Cardiac Tissue Injury Caused By a High-dose Administration of Isotretinoin in Mice

Objective: We aimed to histopathologically and biochemically investigate the protective effects of silymarin (SLY) against cardiac injury induced by a high-dose isotretinoin (ISR) administration. Methods: Thirty-two male Balb/c mice were divided into four groups: control, ISR, SLY, and co-treated (ISR+SLY) groups. For the histopathological analysis, all sections were stained with hematoxylin–eosin and Masson’s trichrome. The TUNEL detection kit was used for the detection of cardiac apoptosis. The oxidative stress markers, which included catalase (CAT), superoxide dismutase (SOD), glutathione (GSH), glutathione peroxidase (GSH-Px), and glutathione reductase (GSH-red), and the glutathione S-transferase (GST) and lipid peroxidation markers, which included erythrocyte malondialdehyde (E-MDA) and plasma malondialdehyde (P-MDA), were biochemically determined. All statistical analyses were conducted with SPSS 18.0 (IBM, New York, USA) and GraphPad Prism Version 6.01 (USA). The Student’s t-test was applied to the parametric data for comprising among groups. The P-significance degree was evaluated as 95%. Results: Severe histopathological alterations were observed in cardiac tissue. The ISR group showed hemorrhage, necrosis, edema, and congestion in cardiac tissues. SLY did not improve ISR-induced histopathological changes (p>0.05). The highest number of apoptotic cells was detected in the ISR group. In the ISR+SLY group, SLY treatment reduced apoptosis (p≤0.05). Antioxidant enzyme activities (CAT, SOD, GSH-Px, GSH-Red, GSH, GST) were induced in ISR+SLY group (p=0.015, p>0.05, p=0.002, p=0.002, p=0,018, p=0.002; respectively). E-MDA (p=0.003) and P-MDA (p=0.005) levels significantly increased in the ISR group and decreased in the SLY group. Conclusion: SLY increased antioxidant enzyme activities, prevented lipid peroxidation, and decreased apoptosis. SLY was found to be an antioxidant against ISR-induced cardiac oxidative damage.
A Response to John Stone and Kelsey Harris

I am pleased not only that Ethnic and Racial Studies chose to remember a nearly forty-year-old article, but also that it is evidently continuing to be read. And as a researcher, I am equally pleased that an ageing empirically derived concept still seems to be relevant. John Stone’s and Kelsey Harris’s complimentary and wide-ranging commentary also discussed my later writing on ethnicity. For this reason, much of their commentary is about ethnicity rather than symbolic ethnicity (SE). My response will follow this pattern as well, although I cannot comment on all the topics they discuss.
Investigations of potent biocompatible metal-organic framework for efficient encapsulation and delivery of Gemcitabine: biodistribution, pharmacokinetic and cytotoxicity study

Gemcitabine (GEM), a nucleoside analogue, is used for the treatment of various cancers. However, this drug possesses several limitations such as poor pharmacokinetics, metabolic degradation by cytidine deaminase, development of drug resistance, and schedule dependent toxicity. To circumvent these drawbacks, it can be entrapped in a suitable formulation for protection against metabolic degradation or urinary excretion. To this end, we have synthesized and investigated different iron (Fe-III)-based biocompatible metal-organic frameworks (MOFs), namely, MIL-101-NH2 (rigid), MIL-88A, and MIL-53 (flexible). All these MOFs have different topologies, connectivity, and chemical composition. MIL-53 was identified as a promising carrier for GEM delivery, with enhanced encapsulation and progressive release in relation to other candidates. The release of GEM from MIL-53 followed zero order kinetics, leading to an effective plasma concentration within the therapeutic range. Furthermore, in- vitro cytotoxicity study by using pancreatic cancer cell lines (MIAPaCa-2 and PANC1) stipulated that GEM loaded in MIL-53 (MIL53-GEM) had an increased cytotoxic effect relative to native GEM. Additionally, the slow release of GEM in a controlled manner could protect the drug from enzymatic degradation to increase its efficacy, half-life, and bioavailability without toxicity to organs as evidenced by in-vivo studies. This study demonstrates the potential of MIL53-GEM in upgrading the clinical outcome of GEM-based chemotherapy against cancer.
Stability of essential spectra of closed operators under T-compact equivalence and applications

The main subject of this paper is to introduce and study the concept of T -compact equivalence of closed linear operators in Hilbert spaces. Many results are proved via this equivalence, especially the invariance of essential spectra of T -compact equivalent closed operators. The results obtained are used to describe some Fredholm essential spectra of transport operators. 2000 Mathematics Subject Classification: 47A53, 47A55, 47N50
Sanitary Risk Factors and Microbial Contamination of Grilled Meats Sold in Cotonou, Benin

Grilled meat is a rich foodstuff in protein and very important for human consumption. Its quality is all the characteristics that give it its organoleptic, nutritional, hygienic and technological properties. The aim of this work was to evaluate the sanitary risk and the microbial contamination of grilled meat sold in Cotonou, Benin. To reach our goal, a semi-strutured investigation was conducted in the meat grilling production shops focusing on the characteristics of the company, the method of preparation of the meat, the type of meat produced and methods of preserving meat. A total of 50 samples of meats samples were analyzed for fecal coliforms, Escherichia coli, Staphylococcus spp, sulphite reducing anaerobes and total aerobic mesophilic counts. The susceptibility to conventional antibiotic was investigated by the disk diffusion method. The inspection of the meat grilling enterprises revealed that 73% of these companies are located on the edge of the high-traffic public road, 85% of which is sold by a person and 15% by 2 people. This activity is conducted solely by men (100%) in Cotonou and dominated by Nigerians (57%). Most of the grilled meats sell meat from both chickens and mutton (82%) and the majority (70%) get their supplies from slaughterhouses market. Before grilling operations, 97% of the sellers make a general cleaning and in case of slump 80% use the refrigeration to preserve their product. Total aerobic mesophilic flora, Staphylococcus, coliforms and Escherichia coli load recorded with chicken samples are higher than those observed on mutton samples are. Considering grilled mutton, Staphylococcus load (6.9 X 103 CFU/g) is higher than that of E. coli’s (1.4X102 CFU/g). The antibiogram test on strains of Staphylococcus to reveal overall that the resistance rates of Staphylococcus strains to antibiotics are less than or equal to 50% regardless of the antibiotic with a very strong inhibitory activity (98% inhibition) vancomycin and ciprofloxacin.
Dynamic analysis of laminated composite sandwich beam containing carbon nanotubes reinforced magnetorheological elastomer

In this study, dynamic analysis of three-layered sandwich beam with thin orthotropic skins and multiwall carbon nanotubes reinforced magnetorheological elastomer (MWCNT-MRE) core have been investigated. The laminates are made of glass fiber/epoxy composites with ply orientation of [0/90] s and are prepared using vacuum-assisted hand layup process. Experiments are performed to investigate the vibration characteristics of MWCNT-MRE and MRE sandwich structures by applying the various magnetic field intensities under different end conditions. Further, the laminated composite MWCNT-MRE and MRE sandwich beams are modeled using ABAQUS finite element software and validated through experimental results in terms of natural frequencies. Also, the present finite element model is validated with available literature in terms of natural frequencies. A very good agreement is observed between the results of the experimental method and those extracted from numerical simulation. Also, the influence of applied magnetic field levels, core thickness ratio, ply orientation, and various boundary conditions on the vibration behavior of laminated composite MWCNT-MRE and MRE sandwich beams are analyzed.
Getting to Outcomes Guide for Teen Pregnancy Prevention

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Ferruginous Rupestrian Savannah: a floristic and structural analysis of these rare environments

The flora of the Rupestrian Savannah (Cerrado Rupestre) is composed of widely distributed species and endemic species from high altitude rocky outcrops. The aim of this study was to characterise the floristic composition, structure and diversity of fragments of Rupestrian Savannah in south-eastern Brazil and to examine the similarity with other rupestrian cerrado vegetations and with cerrado sensu stricto on profound soils. For this, phytosociological parameters, evenness and diversity were calculated and compared with other studies. The survey exhibited 72 species, 45 genera, 30 families and high floristic similarity with cerrado on profound soils. There were no indicator species of the Rupestrian Savannah, but there were typical species of rocky environments. The basal area was significantly larger in the profound soil cerrado in relationship to the Rupestrian Savannah and evenness was lower in the Rupestrian Savannah of this study compared to others. These variables reflect the lower exploration capacity of the root of rocky environments. The highest similarity between the Rupestrian Savannah and cerrado on profound soils refers to the canga ferruginous nature, which represents the limit of the tableland of cerrado on the edge of the plateaus, allowing greater sharing of flora.
Pengaruh Perilaku Herding dan Volatilitas IHSG terhadap Return Pasar di Bursa Efek Indonesia

Abstract. This study aims to determine the influence of herding behavior and JCI volatility on market returns at Indonesia Stock Exchange during 2014-2018 period. This research applies quantitative research methods. The sample in this study was taken using a saturated sampling technique. The data in this study uses secondary data collected from various sources, such as the Indonesia Stock Exchange, Yahoo! Finance, Bloomberg and Reuters. This study uses multiple linear regression analysis to process data and test hypotheses. The results of this study found that herding behavior had a positive and significant effect on market returns, while the JCI volatility had a positive and significant effect on market returns. Further researchers are advised to add several other variables that can affect market returns, such as inflation rates, interest rates, and others. Keywords: Herding Behavior, JCI Volatility, Market Return. Abstrak. Penelitian ini bertujuan untuk mengetahui adanya pengaruh perilaku herding dan volatilitas IHSG terhadap return pasar di Bursa Efek Indonesia selama periode 2014-2018. Penelitian ini menerapkan metode penelitian kuantitatif. Sampel pada penelitian ini diambil menggunakan teknik sampling jenuh. Data dalam penelitian ini menggunakan data sekunder yang dikumpulkan dari berbagai sumber, seperti Bursa Efek Indonesia, Yahoo! Finance, Bloomberg dan Reuters. Penelitian ini menggunakan analisis regresi linier berganda untuk mengolah data dan menguji hipotesis. Hasil dari penelitian ini menemukan bahwa perilaku herding berpengaruh positif dan signifikan terhadap return pasar, sedangkan volatilitas IHSG berpengaruh positif dan signifikan terhadap return pasar. Bagi peneliti selanjutnya disarankan untuk menambahkan beberapa variabel lain yang bisa mempengaruhi return pasar, seperti tingkat inflasi, suku bunga, dan lain-lain. Kata kunci: Perilaku Herding, Volatilitas IHSG, Return Pasar.
Performance of the LandSoil expert‐based model to map erosion and sedimentation: application to a cultivated catchment in central Belgium

Intensive agricultural practices on sensitive soils induce high erosion rates in central Belgium. Expert‐rules models quantify runoff and erosion at catchment scale, avoiding over‐parameterization, and can include some direct or indirect connectivity features. The aim of this article is to test the ability of an expert‐based model, LandSoil, to quantify runoff and to locate erosion and sedimentation areas in a small cultivated loamy catchment in Belgium during the years 2014, 2015 and 2016. Spatialized data are important for assessing model outputs and the erosive response. Measurements of runoff and observation of spatial erosion/deposition patterns, especially around major connectivity points, permitted an assessment of the reliability of the model results. Runoff modelling gave contrasting results (good linear adjustment at the outlet of the 83 ha sub‐catchment (point 1): r2 of 0.96, Nash–Sutcliffe criterion of 0.95; less good at the outlet of the 3.9 ha sub‐catchment (point 2): r2 of 0.28, Nash–Sutcliffe criterion of –0.47). For point 2 the poor results are explained by the very few runoff events observed, a scaling effect and the small area with a single land use. Graduated rulers demonstrate that the model is able to provide a coherent pattern of erosion/deposition. The study highlights great sensitivity to the effect of land use, land allocation, landscape design and slope gradients. Grass strips induce deposition of eroded particles when slopes are gentle (< 2%). Woodland strips decrease connectivity by being in the stream but deposit thinner sediment layers. Field boundaries have a role in the transport, but not really the quantity, of sediments. This model validation in the Belgian loess context allows us to use LandSoil in other similar environments in order to estimate the effects of landscape management scenarios. © 2020 John Wiley & Sons, Ltd.
Comparative Effectiveness of Complete Versus Culprit Artery Only Percutaneous Coronary Revascularization for Multivessel Disease after ST-Segment Elevation Myocardial Infarction

Background: Coronary artery disease (CAD) is the leading cause of mortality and morbidity in the world. Percutaneous coronary intervention (PCI) is one of the treatment approaches for CAD. PCI can be conducted for the completely blocked artery and the remaining angiographically significantly narrowed arteries (complete PCI), or it can be done only for the completely blocked artery (culprit artery-only PCI). The clinical benefits of complete PCI versus culprit artery-only PCI are debatable. This study compared the event free survival from major adverse cardiac events (MACE), angina control and quality of life in patients who underwent complete PCI or culprit artery-only PCI at two years follow-up in a single tertiary center, Yerevan, Armenia. Methods: A retrospective cohort study was conducted. The study population included all multivessel disease (MVD) patients after ST-segment elevation myocardial infarction (STEMI), who underwent primary PCI from 2012 to 2014 at Nork Marash Medical Center (NMMC). Data were collected from patient telephone surveys (March-April 2015), the NMMC electronic PCI database, and medical records. Multivariable Cox proportional hazards regression analysis was used to compare survival rates between complete and culprit artery-only PCI groups. Results: Among 306 patients included in the analysis, 150 (49.01%) patients underwent complete PCI and 156 (50.99 %) underwent culprit artery-only PCI. The groups differed at baseline by gender and prevalence of heart failure. The average door-to-balloon time was significantly higher in the complete PCI group. The mean follow-up time was 28.5 months for the complete PCI and 26.8 months for the culprit artery-only groups. In unadjusted comparisons, the complete PCI groups had higher quality of life score (measured by EQ-5D health utility