Miracle-dz/UniFAR-FTUs huggingface dataset:
The Effects of Familiarity and Positive Recommendation on Repurchase Intention: The Mediating Role of Trust

This study aims to analyze the effects of familiarity and positive wordof-mouth (PWOM) recommendation on repurchase intention in the mobile telecommunication sector. The role of trust was examined as a mediating variable in these relationships. A total of 268 valid questionnaires were completed by existing consumers in the Vietnam's mobile telecommunication market. Two mediation models were established to examine the mediating effect of trust and Structure Equation Model (SEM) was employed to test proposed hypotheses. The results show that trust plays a fully mediating role in the relationship between familiarity and repurchase intention, and trust partially mediates the effect of PWOM recommendation on repurchase intention. It suggests that the mobile phone network operators in Vietnam should find out any way to enhance consumer's trust by improving benefits for subscribers who perceive familiarly with current service, and fostering a long-lasting relationship with customers who volunteer to spread positive information about provider's services to others.
Dokuz Eylül Üniversitesi Tıp Fakültesi öğrencilerinin cinsel tutum ve davranışları

Amac: Tip fakultesi ogrencilerinin saglikli cinsel tutum ve davranislar kazanmalari, bireysel acidan ve meslek yasamlarinda hastalarina cinsel konularda uygun yaklasim gosterebilmeleri bakimindan onemlidir. Bu calismada Dokuz Eylul Universitesi Tip Fakultesi ogrencilerinin cinsel tutum ve davranislarinin saptanmasi, karsilastirilmasi ve degerlendirilmesi amaclanmistir. Getec ve yontem: 2001-2002 ogretim yilinda Dokuz Eylul Universitesi Tip Fakultesi'nde 1. ve 6. sinifa devam eden ogrencilerin %66,8'i (n = 201), cinsel tutum ve davranislarini saptamak amaciyla hazirlanmis 39 soruluk bir anketi cevaplandirmistir. Bulgular: Ogrencilerin ergenlik donemiyle ilgili bilgi kaynaklari ilk sirada arkadaslarken, agirlikli olarak kizlarda anne, kitaplar, gazete-dergiler, erkeklerde gazete-dergiler ve televizyon olarak saptanmistir. Ergenlik donemi degisikliklerinden 'sivilceler' iki cins icin de ilk kaygi nedeni olarak bulunmustur. Erkeklerin, hemcinslerinin evlilik oncesi cinsel deneyimine yaklasimlari daha olumluyken, kizlarin erkeklerin evlilik oncesi cinsel deneyimine yaklasimi, hemcinslerininkine olan yaklasimlarindan daha hosgoruludur. Cinsel iliski yasama ve masturbasyon yapagini belirtme oranlari erkek ogrencilerde daha yuksek bulunmustur. Erkeklerde ilk cinsel iliskiyi parayla iliskiye giren yada ozel olmayan biriyle yasama oranlari yuksektir. Genel olarak cinsel iliskilerde kondom kullanimi yurt disi calismalardan daha dusuk, ,: geri cekme yonteminin kullanimi yuksek orandadir. Cinsel tutum ve davranislari belirleyen etkenlerde tum ogrenciler kendi istek ve degerlerini ilk sirada bildirmis, sosyal etkenler, dini gerekler, ailesel beklentiler, cinsel yolla bulasan hastaliklardan korunmayi yuksek oranlarda belirtmislerdir. Sonuc: Bulgular, tip ogrencilerinin cinsel tutum ve davranislarinda erkek-kadin farkinin ve cinsiyet ayrimciligini korukleyen geleneksel yapinin etkilerinin surmekte oldugunu, universite oncesi donemlerde yeterli bilimsel yaklasim ve egitimin alinmadigini, tip egitimi suresince biyomedikal egitimin yani sira bu alanlarda daha cok desteklenmeleri gerektigini dusundurmektedir.
Plants traditionally used against malaria: phytochemical and pharmacological investigation of Momordica foetida

Leaves from Momordica foetida traditionally used to treat symptoms of malaria in parts of East Africa were studied for in vitro antimalarial activity. Using an [3H] hypoxanthine-incorporation assay the antiplasmodial activity of hydrophilic and lipophilic extracts against the chloroquine-sensitive strain poW and the multiresistant clone Dd2 of Plasmodium falciparum was determined. The petrol ether/ethyl acetate extract showed significant activity with IC50 values of 7.3 µg/mL (poW) and 13.0 µg/mL (Dd2). Cytotoxicity was estimated on two human cell lines HepG2 and ECV-304 and a selectivity index (SI) was calculated, ranging between 12 and 15. Phytochemical analysis led to the isolation of a number of phenolic glycosides, e.g. eriodictyol-, 5,7,4-trihydroxyflavanone-, kaempferol- and 5,7-dihydroxychromone-7-O-b-D-glucopyranoside, not previously known from M. foetida. In order to prove one possible mode of action the influence of the crude extracts as well as the isolated compounds on the heme degradation with chloroquine as reference compound was evaluated. The ethyl acetate extract showed about 88% inhibition of heme degradation, quite similar to chloroquine (84 %), and also eriodictyol-7-O-b-D-glucopyranoside (2) inhibited heme degradation by 86 %.
Dysmorphology And Dysfunction In The Brain And Calvarial Vault Of Nonsyndromic Craniosynostosis

Craniosynostosis is a premature pathologic fusion of one or more sutures in the calvarial vault. The six calvarial sutures are growth sites between adjacent intramembranous bones, which allow for flexibility during passage through the birth canal and accommodation for the growing brain. (1) Premature fusion results in obvious cranial morphologic abnormality and can be associated with elevated intracranial pressure, visual dysfunction, mental retardation and various forms of subtler learning disability. (2) A category of disease called isolated nonsyndromic craniosynostosis (NSC) represents nearly 85% of cases. It results in prototypical skull deformities and has newlydiscovered correlations with poor neuropsychologic and visual functioning. Herein we utilize new techniques in magnetic resonance and three-dimensional computed tomographic analysis to explore neural and bony structural foundations to functional deficit. To our knowledge, this is the first report of evidence of microstructural and functional brain abnormalities in sagittal synostosis, and the first characterization of orbital abnormalities from coronal craniosynostosis that may underlie visual abnormalities.
Effect of temperature on production of okadaic acid, dinophysistoxin-1, and pectenotoxin-2 by Dinophysis acuminata in culture experiments

We cultivated Dinophysis acuminata, a mixotrophic dinoflagellate causing diarrhetic shellfish poisoning worldwide, at different temperatures by providing a mixotrophic ciliate Myri- onecta rubra as a food source. We examined the effects of temperature on growth rates and moni- tored production of the toxins okadaic acid (OA), dinophysistoxin-1 (DTX1), and pectenotoxin-2 (PTX2) using liquid chromatography-tandem mass spectrometry. Cell densities of D. acuminata increased at temperatures of 10, 14, 18, and 22°C, and the mean specific growth rates during the exponential growth phase were higher at higher temperatures (0.14 to 0.28 d -1 ). The concentration of all toxins increased as cell densities increased. The mean cellular PTX2 content during the exponen- tial growth phase was greater at lower temperatures, but clear differences in the other toxin concen- trations in relation to temperature were not observed. The cellular content of OA and DTX1 signifi- cantly increased during the exponential growth phase at all temperatures except at 10°C for OA, whereas that of PTX2 did not significantly increase at temperatures greater than 10°C. Cellular toxin production rates temporarily increased at or just before the end of the exponential growth phase at 14, 18, and 22°C, and the mean rates for OA production over the entire incubation period were higher at higher temperatures. Our results indicate that increasing temperature generally stimulates toxin production in D. acuminata populations due to an increase in cell density, but cellular content and production rates of OA and PTX2 in response to temperature differ and are influenced by growth phase.
Stacking Resistance Alleles from Wild and Domestic Soybean Sources Improves Soybean Cyst Nematode Resistance

The soybean cyst nematode (SCN; Heterodera glycines Ichinohe) is the most economically important soybean [Glycine max (L.) Merr. ] pathogen in the United States. Field SCN populations are adapting to the narrowly based SCN resistance currently deployed in soybean cultivars. The objective of our research was to measure the effects of combinations of SCN resistance genes or quantitative trait loci (QTL) from the wild soybean (Glycine soja Siebold & Zucc.) PI 468916 and the domesticated soybean accessions PI 88788 and PI 437654. Two populations were developed to test the combinations of QTL and genes. Both populations segregated for the G. soja resistance QTL cqSCN-006 and cqSCN-007. Population 1 also segregated for resistance from PI 88788 and Population 2 seg-regated for resistance from PI 437654. The populations were tested for resistance to three SCN isolates in a greenhouse and with single nucleotide polymorphism (SNP) and simple sequence repeat (SSR) markers. In both populations, the two G. soja resistance alleles significantly increased SCN resistance compared with the alternative alleles. The SCN resistance alleles rhg1 and Rhg4 from PI 437654 and rhg1-b from PI 88788 also significantly increased resistance compared with the alternative alleles. The two G. soja QTL alleles significantly enhanced the resistance derived from PI 88788. These results show that SCN resistance can be increased through stacking genes and QTL from multiple resistance sources.
Influence of the Applied Working Fluid and the Arrangement of the Steering Edges on Multi-Vane Expander Performance in Micro ORC System

Micro-power domestic organic Rankine cycle (ORC) systems are nowadays of great interest. These systems are considered for combined heat and power (CHP) generation in domestic and distributed applications. The main issues of ORC systems design is selection of the expander and the working fluid. Thanks to their positive features, multi-vane expanders are especially promising for application in micro-power ORC systems. These expanders are very simple in design, small in dimensions, inexpensive and feature low gas flow capacity and expansion ratio. The application of multi-vane expanders in ORC systems is innovative and currently limited to prototype applications. However, a literature review indicates the growing interest in these machines and the potential for practical implementation. For this reason, it is necessary to conduct detailed studies on the multi-vane expanders operation in ORC systems. In this paper the results of experimental and numerical investigations on the influence of the applied working fluid and the arrangement of the steering edges on multi-vane expander performance in micro ORC system are reported. The experiments were performed using the specially designed lab test-stand, i.e. the domestic ORC system. Numerical simulations were proceeded in ANSYS CFX software (ANSYS, Inc., Canonsburg, PA, USA) and were focused on determining the expander performance under various flow conditions of different working fluids. Detailed numerical analysis of the arrangement of the machine steering edges showed existence of optimal mutual position of the inlet and outlet port for which the multi-vane expander achieves maximum internal work and internal efficiency.
The Relationship Between Implicit Beliefs, Anxiety, and Attributional Style in High-Level Soccer Players

This study investigated whether attributional style mediated the relationship between implicit beliefs and competition anxiety. Seventy-two soccer players completed the Conceptions of the Nature of Athletic Ability Questionnaire–Version 2, Sports Competition Anxiety Test, and short form Sports Attributional Style Scale. Entity beliefs were associated with heightened anxiety. Incremental beliefs were associated with lowered anxiety. Uncontrollable and global attributions mediated the relationship between entity beliefs and anxiety. Controllable and specific attributions mediated the relationship between incremental beliefs and anxiety. The social-cognitive model of achievement motivation appears to apply to the sporting domain and may facilitate anxiety and attribution research.
Marine predators and phytoplankton: how elephant seals use the recurrent Kerguelen plume

Predators feeding in a highly dynamic environment have evolved strategies to respond to patchy resource distribution. However, studying these ecological interactions is challenging in the marine environment, as both predators and elements in their environment are often highly mobile and difficult to monitor. We used sensors deployed on female southern elephant seals Mirounga leonina to collect data as they foraged hundreds of metres below a large recurrent phytoplankton plume east of the Kerguelen Islands (49°15’S, 69°10’E). Data collected by animal-borne light sensors were used to reconstruct phytoplankton patterns encountered by the seals. Prey encounter events (PEEs) recorded by seal-borne accelerometers below the euphotic zone were compared with phytoplankton estimates at 2 scales: mesoscale (10s to 100s km) and small scale (inter-dive). These analyses were performed on data recorded during daylight hours only, and did not include data at night due to the sensitivity threshold of the light sensors. Our results showed that elephant seals moved through alternating patches of high- and low-density phytoplankton, but the timing and locations of these bloom patches were different between the upper and lower euphotic layers. Seals recorded more PEEs and shallower dives below high-density patches of phytoplankton. We propose that phytoplankton density at the mesoscale facilitates prey aggregation (direct effect). However, phytoplankton density between dives (small scale) likely facilitates vertical access to prey via the shading effect of phytoplankton (indirect effect). Our study shows how a deep-diving marine predator may use its environment to maximise net energy intake, and we demonstrate its resilience in a highly dynamic ecosystem.
THE EFFECT OF THE ONE-TIER, TWO-TIER, AND THREE-TIER DIAGNOSTIC TEST TOWARD THE STUDENTS' CONFIDENCE AND UNDERSTANDING TOWARD THE CONCEPTS OF ATOMIC NUCLEAR

The identification of misconception in the Physics or Science learning all this time mostly used the two-tier or three-tier diagnostic test. There were several reasons why both test forms used, such as to make sure whether the students guessed the answers or understood the concepts. Besides, through the use of both tests the students' confidence in choosing the answers could be identified. However, there was no explanation or study on the most effective test to identify those misconceptions. The purpose of this study was to know the effect of the one-tier, two-tier and three-tier diagnostics test toward the students' answer pattern, confidence level, and understanding on the concept of anatomic nuclear. The respondents which were used in this survey research were 88 the students attending Atomic Nuclear course in Physics Education Department, Faculty of Teacher Training and Education, Syiah Kuala University. Some tests were consecutively given to the 88 respondents, the test participants could continue to the next test if they finished all questions in the previous test. The data collection used the instrument of basic Physics preconception test (Tes Pemahaman Konsep Fisika Inti/TPKFI) in the form of one-tier, two-tier and three-tier multiple choice with eight multiple choice items. The test was developed by researchers with difficulty index = 0.35, discrimination index = 0.31, validity= 0.35, and reliability= 0.90. The data analysis result showed that even though the students' answer patterns were the same for all types of diagnostic tests, there was a convincing change in the students' concept understanding and confidence between the two-tier and three-tier. From this research, it could be inferred that the identification of the students' misconception in the Science learning would be better (had high confidence), if the diagnostic test used was higher, that was three-tier, four-tier, and thus on.
On iterative solutions for numerical collision models

Nonlinear interactions between different parts of musical instruments present several challenges regarding the formulation of reliable and efficient numerical sound synthesis models. This paper focuses on a numerical collision model that incorporates impact damping. The proposed energy-based approach involves an iterative solver for the solution of the nonlinear system equations. In order to ensure the efficiency of the presented algorithm a bound is derived for the maximum number of iterations required for convergence. Numerical results demonstrate energy conservation as well as convergence within a small number of iterations, which is usually much lower than the predicted bound. Finally, an application to music acoustics, involving a clarinet simulation, shows that including a loss mechanism during collisions may have a significant effect on sound production.
Theory of current-induced skyrmion dynamics close to a boundary

Skyrmions are the prime candidate as the information carrier of tomorrow’s data storage devices. But they face the risk of annihilation on encountering a boundary. We show how skyrmions can avoid this undesired outcome through management of their anisotropy energies. Specifically we derive an edge potential and a contact interaction term which only operate close to the edge. We verify the accuracy of these two terms by modelling a realistic skyrmion system and comparing it with micromagnetic simulations. We not only observe and explain the speeding up of skyrmions near the edge (which had been expected) but also observe and explain a peculiar asymmetry in the motion (where it speeds up more on one edge compared to the other). We devise a means to stabilize a skyrmion against Magnus force (without the need for a transverse current) by modifying the damping parameters. Finally, we note a link between these damping parameters and the anisotropy energy. Our results will be of value in the design of skyrmion-based devices and would give fresh impetus to the study of magnetic anisotropy. Significance: Skyrmions are the prime candidate as information carrier of tomorrow’s ever ubiquitous data storage devices. But they face the risk of annihilation on encountering a boundary. We propose a model for the skyrmion-edge dynamics by deriving an edge potential and a contact interaction, which are incorporated into the standard Thiele equation for the current-induced motion of skyrmions. We compare this model with micromagnetic simulations which leads us to observe and explain the speeding up of skyrmions near the edge. We also observe and explain a peculiar asymmetry in the motion (where skyrmions speed up more on one edge compared to the other) and discover the important role played by the damping constants of the Thiele equation. We devised a means to stabilize a skyrmion against Magnus force (without the need for a transverse current) by modifying the damping parameters. A connection with the anisotropy energy is noted.
AUTOMATIC POINT CLOUD GENERATION AND REGISTRATION WITH A STEREOVISION SLIT-SCANNER

Abstract. In this paper, a fully automatic 3D surface scanner, from point collection to point cloud registration and smoothing, is presented. The system is composed by a camera pair, which is calibrated automatically, and a hand-held laser plane. On epipolar images, generated from the stereo-frames taken as the object is being swept over by the laser plane, the search for point correspondences is reduced to identifying intersections of image rows with the recorded laser profiles. A variation of fitting Gaussian curves to the gray-value data along epipolar lines allows estimating peak positions by also using information from the vicinity of the peak. 3D reconstruction by simple stereovision is strengthened geometrically by imposing additional coplanarity constraints. All unknowns for a scanning po- sition are estimated simultaneously in a single iterative adjustment. In order to register point clouds from different scan positions, the ICP algorithm is applied. Initial values for ICP are obtained automatically by using images acquired from adjacent scanning positions. For this, SIFT points on images of overlapping scans are extracted, matched and related to the scans to provide 3D point corres- pondences, which allow the required approximate 3D registration. The tools employed here for surface smoothing are also presented. Finally, examples are given to illustrate the performance of described methods.
High diversity of nitrogen-fixing bacteria in the upper reaches of the Heihe River, northwestern China

Vegetation plays a key role in water conservation in the southern Qilian Mountains (northwestern China), located in the upper reaches of the Heihe River. Nitrogen-fixing bacteria are crucial for the protection of the nitrogen supply for vegetation in the region. In the present study, nifH gene clone libraries were established to determine differences between the nitrogen-fixing bacterial communities of the Potentilla parvifolia shrubland and the Carex alrofusca meadow in the southern Qilian Mountains. All of the identified nitrogen-fixing bacterial clones belonged to the Proteobacteria. At the genus level, Azospirillum was only detected in the shrubland soil, while Thiocapsa , Derxia , Ectothiorhodospira , Mesorhizobium , Klebsiella , Ensifer , Methylocella and Pseudomonas were only detected in the meadow soil. The phylogenetic tree was divided into five lineages: lineages I, II and III mainly contained nifH sequences obtained from the meadow soils, while lineage IV was mainly composed of nifH sequences obtained from the shrubland soils. The Shannon–Wiener index of the nifH genes ranged from 1.5 to 2.8 and was higher in the meadow soils than in the shrubland soils. Based on these analyses of diversity and phylogeny, the plant species were hypothesised to influence N cycling by enhancing the fitness of certain nitrogen-fixing taxa. The number of nifH gene copies and colony-forming units (CFUs) of the cultured nitrogen-fixing bacteria were lower in the meadow soils than in the shrubland soils, ranging from 0.4 × 10 7 to 6.9 × 10 7 copies g −1 soil and 0.97 × 10 6 to 12.78 × 10 6 g −1 soil, respectively. Redundancy analysis (RDA) revealed that the diversity and number of the nifH gene copies were primarily correlated with aboveground biomass in the shrubland soil. In the meadow soil, nifH gene diversity was most affected by altitude, while copy number was most impacted by soil-available K. These results suggest that the nitrogen-fixing bacterial communities beneath Potentilla were different from those beneath Carex .