Miracle-dz/UniFAR-FTUs huggingface dataset:
Testing Two Discovery Systems: A Usability Study Comparing Student Perceptions of EDS and Primo

Abstract Library discovery systems are a primary tool for research and discovery of local collections in many academic libraries. Usability studies on these systems is an important practice to identify technical issues, determine local customization, and inform continuity in library instruction. Most usability studies, however, are completed on a single discovery system. This study is unique in that it compares EBSCO’s EBSCO Discovery Service (EDS) with Ex Libris’s Primo discovery systems. To date, this is the only published usability study conducted on the two systems. Nineteen undergraduate and graduate participants were led through a series of nine usability tasks in both systems. The quantitative and qualitative results of the study indicate that discovery systems are powerful tools when managed consistently and holistically by addressing the discovery search needs of students and faculty through information literacy instruction and oversight by a discovery working group.
Factors Influencing People's Decision to Pay Zakat, Infaq and Sedekah (ZIS) in Baitul Mal Banda Aceh City

The aim of the research is to examine the influence of factors that determine people's decisions in giving zakat, infaq, and sedekah at amil zakat institution. Some influencing factors are level of publication, promotion, reputation, religiosity, and motivation to the community's decision to pay ZIS at Baitul Mal of Banda Aceh City. The method used in this research is quantitative by using primary data. The data collection was conducted by distributing questionnaires directly to the research object. Each variable was measured a Likert scale. The research population was the people of Banda Aceh City aged 15-64 years and above who have jobs and income. The sample selection technique used is convenience sampling, the research object consisted of 100 respondents. Data processing was carried out by using binary logistic regression analysis. The results of this study indicated that publication, promotion, reputation, religiosity, and motivation positively and significantly impacted the community's decision in paying ZIS at Baitul Mal of Banda Aceh City, either partially or simultaneously. The results also showed that the community did not only require an increase in a good understanding of ZIS and its benefits, but they also demanded the reputation of Baitul Mal institution to be improved in order to encourage them to pay ZIS at Baitul Mal of Banda Aceh City.
Online but Not Alone: Teachers’ Perceptions of Effective Online School Leadership (OSL)

Online school leadership (OSL) is of particular interest given the growing number of online education opportunities. As school districts develop more online and blended learning programs, particularly for secondary grade students, the need to examine leadership in these programs is paramount. The literature suggests that most studies focus on effective leadership in bricks and mortar schools, while limited research focuses on leadership in online programs. In this study, we aimed to explore teachers’ perceptions of leadership in online secondary schools in two districts. Our questions focused on secondary teachers’ experiences with leaders in their online schools and how these experiences contribute to perceptions of what makes for effective leadership practices. Using phenomenology, we interviewed six teachers, analyzed for themes and categorized these into a sense of community, organizational learning and empowerment to represent teachers' perceptions of OSL. Based on these results, we suggest that OSL consists of both foundational and contextualized practices, and that both are necessary for effective OSL. This research has implications for educational leadership broadly, but specifically for leadership in online education.
The Distribution and Abundance of Long-Tailed Macaques in the Main Campus of Universiti Malaysia Sabah and its Vicinity

Long-tailed macaques (Macaca fascicularis) inhabit a wide range of natural and human-modified environments in Southeast Asia. Because of their ability to occupy the same space and utilise the same food resources as humans, long-tailed macaques have in some cases been regarded as nuisance and pest. As part of an effort to assess the status of human-macaque interactions in the main campus of Universiti Malaysia Sabah (UMS), we conducted a survey to determine the distribution range and estimate the abundance of the macaque population. We performed the survey monthly from April 2019 to March 2020 at 13 localities classified into three different habitat types i.e. secondary forest, forest edge and urban areas identified in the campus and its vicinity. The survey covered an overall area of 6.02 km2. We recorded the group or individual locations and the number of macaques with each individual's age/sex information whenever possible. The macaques consisted of three different multimale-multifemale groups and a solitary individual. We recorded a minimum population size of 54 macaque individuals with an average group size of 17.7 individuals and a population density of 8.97 individuals/km2 in the surveyed areas. Macaques were encountered every month and in all habitat types defined in this study. However, they were mainly distributed at two habitat types i.e. urban areas and forest edges near Bukit UMS and the student residential colleges where anthropogenic influence appeared to be high. We speculate that the monthly availability of food resources, including anthropogenic food waste, may partly explain this distribution pattern. We suggest that further studies is conducted in this regard.
A finiteness theorem for Ricci curvature in dimension three

Then M is contractible. Results of the type of Theorem 1, known as finiteness theorems, were first obtained by A. Weinstein [20] and J. Cheeger [4], [12]. Cheeger's finiteness theorem states that there are only finitely many diffeomorphism types for the class of Riemannian manifolds with a bound on the absolute value of sectional curvature and bounds on the diameter and volume identical to that of Theorem 1. Subsequently, Grove-Petersen [7] proved the finite homotopy type theorem only assuming a lower bound on sectional curvature. This was later strengthened to finite diffeomorphism types for n φ 3, 4 by Grove-Petersen-Wu [8]. Theorem 1 is an attempt to generalize this to an assumption on Ricci curvature instead of sectional curvature. All finiteness theorems as quoted above prove that, under a bound on the curvature (which is local), the topology of the manifold is controlled by its size. The proofs of these theorems rely on the understanding of the local structure of the corresponding class. For Cheeger's finiteness theorem, the crucial step is to prove a lower bound on the injectivity radius for that class, hence on a uniform size smaller than that bound, the topology is simple: it is diffeomorphic to a Euclidean ball. The corresponding statement for the
Long-term XMM–Newton investigation of two particle-accelerating colliding-wind binaries in NGC 6604: HD 168112 and HD 167971

The long-term (over more than one decade) X-ray emission from two massive stellar systems known to be particle accelerators is investigated using XMM-Newton. Their X-ray properties are interpreted taking into account recent information about their multiplicity and orbital parameters. The two targets, HD168112 and HD167971 appear to be overluminous in X-rays, lending additional support to the idea that a significant contribution of the X-ray emission comes from colliding-wind regions. The variability of the X-ray flux from HD168112 is interpreted in terms of varying separation expected to follow the 1/D rule for adiabatic shocked winds. For HD167971, marginal decrease of the X-ray flux in September 2002 could tentatively be explained by a partial wind eclipse in the close pair. No long-term variability could be demonstrated despite the significant difference of separation between 2002 and 2014. This suggests the colliding-wind region in the wide orbit does not contribute a lot to the total X-ray emission, with a main contribution coming from the radiative shocked winds in the eclipsing pair. The later result provides evidence that shocks in a collidingwind region may be efficient particle accelerators even in the absenceof bright X-ray emission, suggesting particle acceleration may operate in a wide range of conditions. Finally, in hierarchical triple O-type systems, thermal X-rays do not necessarily constitute an efficient tracer to detect the wind-wind interaction in thelong period orbit.
FRICTION FORCES FOR HUMAN HIP JOINT LUBRICATION AT A NATURALLY PERMEABLE CARTILAGE

This paper presents various kinds of friction forces occurring in a human joint gap. Some main factors which can change the friction forces in a human joint are indicated. Friction forces for squeezing, boosted squeezing and weeping in macro, micro and nano level for porous cartilage are presented here. According to the author’s knowledge the problem of human joint lubrication in unsteady motion has not been hitherto considered in scientific papers on bio-tribology.
Molecular Characterization of Gene-Mediated Resistance and Susceptibility of ESKAPE Clinical Isolates to Cistus monspeliensis L. and Cistus salviifolius L. Extracts

Background Multidrug resistance (MDR) and extensively drug-resistant (XDR) are now the biggest threats to human beings. Alternative antimicrobial regimens to conventional antibiotic paradigms are extensively searched. Although Cistus extracts have long been used for infections in traditional folk medicines around the world, their efficacy against resistant bacteria still needs to be elucidated. We aim to investigate the antibiotic susceptibility profiles of clinical strains Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter cloacae (acronym “ESKAPE”), and their resistance mechanisms by PCR, as well as their sensitivity to C. monspeliensis (CM) and C. salviifolius (CS) methanol extracts and their fractions. Methods Antibiotic susceptibility profile and resistance mechanism were done by antibiogram and PCR. Fractions of CM and CS were obtained using maceration and Soxhlet; their antibacterial activities were evaluated by determining inhibition zone diameter (IZD), minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC). Results Results revealed that all strains were XDR except S. aureus, which was MDR. The PCR indicates the presence of gene-mediated resistance (blaCTX-M, blaSHV, blaOXA-48, blaNDM, blaOXA-51, blaOXA-58, blaIMP, blaVIM, and blamecA). Also, maceration was slightly better for bioactivity preservation. Overall, the extracts of CM (IZD = 20 mm, MIC = 0.01 mg/mL) were more active than those of CS. All extracts inhibited MRSA (methicillin-resistant Staphylococcus aureus) and ERV (Enterococcus faecium Vancomycin-Resistant) with interesting MICs. The ethyl acetate fraction manifested great efficacy against all strains. Monoterpene hydrocarbons and sesquiterpenes oxygenated were the chemical classes of compounds dominating the analyzed fractions. Viridiflorol was the major compound in ethyl acetate fractions of 59.84% and 70.77% for CM and CS, respectively. Conclusions The superior activity of extracts to conventional antibiotics was seen for the first time in the pathogens group, and their bactericidal effect could be a promising alternative for developing clinical antibacterial agents against MDR and XDR ESKAPE bacteria.
Development of Roselle (Hibiscus sabdariffa L.) Calyx Jelly Candy

Jelly candy is syrup-phase, non-crystalline candy made using sugar, corn syrup and gelling agents such as gelatin, natural gums, pectin or starch. Roselle (Hibiscus sabdariffa L.) has red edible calyx that is the potential to be used as a natural colorant for jelly candy as it contains anthocyanins. The objective of this research was to determine the effect of different concentrations of dried roselle calyx and sucrose on the characteristics of roselle calyx jelly candy developed. The concentrations of sucrose used were 63.56%, 70.62%, 77.68% and 84.75%. The concentrations of dried roselle calyx used were 6.67%, 10.00%, 13.33% and 16.67%. Sensory analysis was done with 70 untrained panelists to analyze physical characteristics and preferences toward the jelly candies. Results of hedonic tests indicated that the best-formulated jelly candy according to aroma, texture, color and taste was made using 16.67% of dried roselle calyx and 63.56% of sucrose. The best-formulated jelly candy contains 19.52% of moisture, 0.03% of ash, 8.24% of protein, 1.72% of fat and 70.49% of carbohydrates. The selected jelly candy contains 14.23±0.23 mg 100g-1 of anthocyanin and an antioxidant capacity (IC50)value of 16863.8346 μg ml-1. This research shows the potential use of roselle calyx as a natural colorant in jelly candy manufacturing and can be consumed as a healthier option for sweet treats.
Audit committee attributes and financial performance of Saudi non-financial listed firms

Abstract This article investigates the impact of the audit committee attributes in determining the financial performance of Saudi non-financial firms. The research sampled the data of 100 companies spanning from 2010 to 2019 obtained from the firms’ financial statements. The data generated were analysed using different panel data techniques (pooled OLS, fixed and random effects). This study emphasises that audit committee size and meetings negatively influence firms’ performance. However, audit committee independence and financial expertise indicate a strong and positive relationship with financial performance. Therefore, this study provides valuable insights into how audit committee attributes affect profitability. Furthermore, this research may guide companies’ top management on restructuring the audit committee to improve corporate governance practices. Also, the results suggest that Saudi regulatory agencies should ensure that listed firms set up audit committees with more independent directors and financial experts. This requirement may help the firms mitigate information disparity between management and shareholders, thus, reducing agency conflicts and boosting firm performance. Consequently, this paper sheds light on the Saudi corporate environment, so investors may find this research helpful in making their investment decisions.
Continuity of Extremal Transitions and Flops for Calabi-Yau Manifolds

In this paper, we study the behavior of Ricci-flat K\"{a}hler metrics on Calabi-Yau manifolds under algebraic geometric surgeries: extremal transitions or flops. We prove a version of Candelas and de la Ossa's conjecture: Ricci-flat Calabi-Yau manifolds related by extremal transitions and flops can be connected by a path consisting of continuous families of Ricci-flat Calabi-Yau manifolds and a compact metric space in the Gromov-Hausdorff topology. In an essential step of the proof of our main result, the convergence of Ricci-flat K\"{a}hler metrics on Calabi-Yau manifolds along a smoothing is established, which can be of independent interests.
Comparative Study of the Crestal vs Subcrestal Placement of Dental Implants via Radiographic and Clinical Evaluation.

AIM The study aims at using the level/depth of implant placement (equicrestal or cretsal) as the key parameter in measuring the vertical crestal bone loss (CBL) mesially and distally, using periapical radiographs (IOPARs) taken at 1-, 3-, and 6-months interval, postprosthetic loading. MATERIALS AND METHODS Patients (n = 40; 18-65 years), with edentulous space anteriorly or posteriorly, were randomly divided into two groups, namely, group I (equicrestal) and group II (subcrestal) with 20 patients in each group. Implants were placed at an edentulous site (delayed implants), after obtaining cone-beam computed tomography (CBCT) scans. Prosthetic loading (following osseointegration) was done within 3 months of implant placement. The patients were followed up and IOPAR were taken to measure CBL at 1-, 3-, and 6-months interval, postloading. The CBL between the two groups was compared using IOPARs. The data obtained was compiled and unpaired Student's t-test was done for statistical analysis. RESULTS After the statistical analysis of the data obtained during follow-up, CBL was measured radiographically. Mesial and distal vertical bone loss was charted and compared between the two groups. The mean bone loss on the mesial aspect for group I implants is 0.39 mm and for group II implants, it is 0.27 mm, 6 months postloading, determined radiographically. CONCLUSION Subcrestally placed implants are conducive to the overall oral rehabilitation, as it has been seen to preserve marginal peri-implant bone for longer durations than their equicrestally placed counterparts, within the limitations of the current study. CLINICAL SIGNIFICANCE The study prospectively relates the level of implant shoulder with respect to alveolar crestal bone, postloading. Following radiographic comparison between the two groups, significant clinical findings indicated that better esthetics and stability were seen in the subcrestally placed implants. This proves that implant placement level directly influences crestal bone levels; hence, indirectly affects esthetics and function.
Simulations of cm-wavelength Sunyaev-Zel'dovich galaxy cluster and point source blind sky surveys and predictions for the RT32/OCRA-f and the Hevelius 100-m radio telescope

We investigate the effectiveness of blind surveys for radio sources and galaxy cluster thermal Sunyaev-Zel'dovich effects (TSZEs) using the four-pair, beam-switched OCRA-f radiometer on the 32-m radio telescope in Poland. The predictions are based on mock maps that include the cosmic microwave background, TSZEs from hydrodynamical simulations of large scale structure formation, and unresolved radio sources. We validate the mock maps against observational data, and examine the limitations imposed by simplified physics. We estimate the effects of source clustering towards galaxy clusters from NVSS source counts around Planck-selected cluster candidates, and include appropriate correlations in our mock maps. The study allows us to quantify the effects of halo line-of-sight alignments, source confusion, and telescope angular resolution on the detections of TSZEs. We perform a similar analysis for the planned 100-m Hevelius radio telescope (RTH) equipped with a 49-beam radio camera and operating at frequencies up to 22 GHz.We find that RT32/OCRA-f will be suitable for small-field blind radio source surveys, and will detect 33+17−11 new radio sources brighter than 0.87 mJy at 30 GHz in a 1 deg2 field at > 5σ CL during a one-year, non-continuous, observing campaign, taking account of Polish weather conditions. It is unlikely that any galaxy cluster will be detected at 3σ CL in such a survey. A 60-deg2 survey, with field coverage of 22 beams per pixel, at 15 GHz with the RTH, would find <1.5 galaxy clusters per year brighter than 60 μJy (at 3σ CL), and would detect about 3.4 × 104 point sources brighter than 1 mJy at 5σ CL, with confusion causing flux density errors ≲ 2% (20%) in 68% (95%) of the detected sources.A primary goal of the planned RTH will be a wide-area (π sr) radio source survey at 15 GHz. This survey will detect nearly 3 × 105 radio sources at 5σ CL down to 1.3 mJy, and tens of galaxy clusters, in one year of operation with typical weather conditions. Confusion will affect the measured flux densities by ≲ 1.5% (16%) for 68% (95%) of the point sources. We also gauge the impact of the RTH by investigating its performance if equipped with the existing RT32 receivers, and the performance of the RT32 equipped with the RTH radio camera.
Anomalous Josephson effect in semiconducting nanowires as a signature of the topologically nontrivial phase

We study Josephson junctions made of semiconducting nanowires with Rashba spin-orbit coupling, where superconducting correlations are induced by the proximity effect. In the presence of a suitably directed magnetic field, the system displays the anomalous Josephson effect: a nonzero supercurrent in the absence of a phase bias between two superconductors. We show that this anomalous current can be increased significantly by tuning the nanowire into the helical regime. In particular, in a short junction, a large anomalous current is a signature for topologically nontrivial superconductivity in the nanowire.
Prevalence, virulence genes and anti­microbial resistance of Arcobacter isolates from animal meat in Iran

Arcobacter spp. are food-borne and zoonotic entero-pathogens. Obtaining information in relation to antimicrobial resistance helps us for utilisation of an appropriate agent for the treatment of Arcobacter infections. This study aimed to investigate the prevalence, antimicrobial resistance and virulence factors in animal raw meat in Iran. The samples were collected from cattle (n=80), sheep (n=80), goats (n=80), camels (n=80), and buffaloes (n=60) from Khuzestan (n=110), Isfahan (n=80), Gilan (n=110) and Chaharmahal and Bakhtiari (n=80) provinces. Arcobacter isolates of meat samples were isolated, investigated by PCR method. The antibiotic resistance was also investigated. All isolates were screened for 6 virulence genes: cadF, ciaB, cj1349, Mvin, pldA and tlyA by PCR assays. The results showed that the prevalence of Arcobacter species had no significant difference among provinces and animals (P>0.05), so that positive samples were 1.25%, 1.25%, and 0.9% in Isfafhan, Chaharmahal and Bakhtiari, and Gilan, respectively. Virulence genes were observed for A. butzleri species (n=3, 100%). The results showed that Arcobacter spp. were resistant to streptomycin (100%), tetracycline (100%) and vancomycin (100%), but were susceptible to azithromycin (33.33%). In sum, the different regions of the Iran had a relative incidence of 1% for Arcobacter spp. The species showed a resistance of 100% for streptomycin, tetracycline and vancomycin. These findings could help to identify Arcobacter spp. and select the best agent against infection in case of Arcobacter infection in animals.
Measurements of velocity and trajectory of water particle for internal waves in two density layers

This article discusses the kinetics of internal waves, which propagate in a two‐layer fluid system having a constant water depth, using particle image velocimetry (PIV). The experimental vector field of velocity and vertical distributions of its components were estimated at several phases in one wave cycle and compared with the corresponding predictions on the basis of third‐order Stokes internal‐wave theory. These attempts proved that the PIV technique enables the measurement of water velocity spatially induced by the nonlinear internal waves with considerable accuracy. This method was applied to trace water particle path. The measured trajectory was compared with the particle positions obtained theoretically by integrating the Eulerian velocity to a higher order in a Taylor series expansion.
The Neumann problem for the Cauchy-Riemann complex

Part explanation of important recent work, and part introduction to some of the techniques of modern partial differential equations, this monograph is a self-contained exposition of the Neumann problem for the Cauchy-Riemann complex and certain of its applications. The authors prove the main existence and regularity theorems in detail, assuming only a knowledge of the basic theory of differentiable manifolds and operators on Hilbert space. They discuss applications to the theory of several complex variables, examine the associated complex on the boundary, and outline other techniques relevant to these problems. In an appendix they develop the functional analysis of differential operators in terms of Sobolev spaces, to the extent it is required for the monograph.