Miracle-dz/UniFAR-FTUs huggingface dataset:
Validity and Reliability of the Survey of Attitudes Toward Statistics (SATS) Instrument (Kesahan dan Kebolehpercayaan Instrumen Survey of Attitudes Toward Statistics (SATS)

In social science research, statistics play an imperative role. However, social science students’ attitude towards statistics is not widely investigated. This cross-sectional survey validated the Survey of Attitude towards Statistics 28 ( SATS-28 ) instrument, which contains 27 items, in the context of 143 graduate students. Confirmatory Factor Analysis ( CFA ) was used to determine the compatibility of the hypothetical measurement model with the data obtained and to determine the model’s construct reliability. All factors were successfully replicated in the Malaysian sample. From the initial model, 13 items with low factor loading index were dropped to achieve a good fit, leaving the final model with 14 items within four constructs, which are Affect, Cognitive Competence, Difficulty, and Value. The final model resulted in a lower chi-square (107.455) and AIC (203.455) values, while a higher PNFI value (0.599). Other than that, the cut off value of CFI (0.956) was increased. The RMSEA value (0.050) also fulfilled the suggested threshold of <0.08. Findings also revealed that Construct Reliability ( CR ) of the final model was acceptable, which ranges from 0.70 to 0.80. The findings implicate that the model is valid and suitable to evaluate Malaysian student’s attitudes towards statistics. It is suggested that similar studies be done on other extended models of the SAT's instrument. Key Words: Measurement model, Confirmatory Factor Analysis, Statistics anxiety, Survey of Attitude towards Statistics Dalam penyelidikan sains sosial, statistik memainkan peranan penting. Walau bagaimanapun, sikap pelajar sains sosial terhadap statistik tidak banyak dikaji. Tinjauan keratan rentas ini mengesahkan instrumen Tinjauan Sikap Terhadap Statistik 28 ( SATS-28 ), yang mengandungi 27 item, dalam konteks 143 pelajar siswazah. Analisis Faktor Pengesahan ( CFA ) digunakan untuk menentukan kesesuaian model pengukuran hipotetikal dengan data yang diperoleh dan untuk menentukan kebolehpercayaan konstruk model. Semua faktor berjaya dicerminkan dalam sampel Malaysia. Dari model awal, 13 item dengan indeks pemuatan faktor rendah digugurkan untuk mencapai kesesuaian, meninggalkan model akhir dengan 14 item dalam empat konstruk, iaitu Afek, Kompetensi Kognitif, Kesukaran, dan Nilai. Model akhir menghasilkan nilai chi-square (107.455) dan AIC (203.455) yang lebih rendah, sementara nilai PNFI yang lebih tinggi (0.599). Selain itu, nilai penanda aras CFI (0.956) dinaikkan. Nilai RMSEA (0.050) juga melepasi penanda aras <0.08. Hasil kajian juga menunjukkan bahawa Kebolehpercayaan Konstruk ( CR ) model akhir dapat diterima, yang berkisar antara 0.70 hingga 0.80. Hasil kajian menunjukkan bahawa model yang dihasilkan sah dan sesuai untuk menilai sikap pelajar Malaysia terhadap statistik. Disarankan agar kajian serupa dilakukan pada model instrumen SATS yang lain. Kata Kunci: Model pengukuran, Analisis Faktor Pengesahan, kebimbangan statistik, Survey of Attitude towards Statistics
Citation for the published version: This is the peer reviewed version of the following article: Amountzias, C. (2018). An investigation of the effects of income inequality on financial fragility: Evidence from Organization for Economic Co‐operation and Development

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Umidade de equilíbrio de café cereja descascado baseadas em métodos estático e dinâmico

The desorption isotherms for 50 and 73 °C and residual mucilage content of 16.1 and 52.7% in Arabica Coffee (Coffea arabica L.), cv Novo Mundo-Acaia, were built. After this, eight mathematical models (BET, BET Linear, GAB, Halsey, Halsey Modified, Langmuir, Oswin e Peleg) for desorption for hygroscopic products were adjusted to the experimental data for obtaining the coefficients of the models. The choice of the best adjustment was based on the analysis of the following parameters: determination coefficient (R2), relative average deviation, residual distribution tendency and standard deviation of the estimation. The desorption isotherms at 50 °C for cherry coffee with 16.1 and 52.7% residual mucilage contents could be represented by Peleg, Modified Halsey, GAB e Oswin models. At 73 °C the GAB model did not represent the experimental data, and the models of Peleg and Modified Halsey were the best ones. In order to estimate the dynamic equilibrium moisture content, the equation proposed by Fioreze showed to be highly satisfactory.
Diammonium phosphate modified titanium dioxide suspensions with improved ER efficiency

Electrorheological (ER) efficiency is an important parameter that should be considered for applications of electrorheologcial fluids. In this study, diammonium phosphate ((NH4)2HPO4, DAP) is used to modify titanium dioxide particles. The structures and morphologies of the DAP modified particles are not significantly changed compared with pure TiO2. The ER behaviors of the suspensions prepared with TiO2 particles and the DAP modified particles are tested. The results indicate that the DAP modified particle-based ER fluids have a much higher ER efficiency and higher shear stress than the TiO2 particle-based suspension. The highest ER efficiency obtained is 1.2 × 105% at 5 kV mm−1, which is two orders magnitude higher than the TiO2 particle-based suspension.
The Role of Reactive Oxygen Species in UV-B-inhibited Pollen Germination and Tube Growth of Canola

During the past few decades, the stratospheric ozone reduction problem has stimulated remarkable research on higher plant responses to UV-B radiation. However, little of this work has addressed the reproductive biology of plants. The purpose of this study was to investigate the effects of UV-B radiation on reactive oxygen species (ROS) accumulation and antioxidant defense system in relation to germination and tube growth of canola (Brassica napus L) pollen. Our results illustrate that increased UV-B radiation decreased the pollen germination rate and tube length in vitro. Production of superoxide anion radical (O 2 ) and hydrogen peroxide (H 2 O 2 ) increased by UV-B radiation treatment, and their accumulation resulted in lipid peroxidation. The activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) were decreased by enhanced UV-B radiation. The increased ROS and lipid peroxidation, as well as decreased antioxidant activities may be attributed to the effects of UV-B radiation on pollen germination and tube growth.
Effects of Ion Species and Energy on the Amorphization of Si During FIB TEM Sample Preparation as Determined by Computational and Experimental Methods

Gallium focused ion beam (FIB) milling is the method of choice to prepare cross sections of selected features from microelectronic devices for transmission electron microscope (TEM) imaging and analysis. The FIB milling technique is unsurpassed in producing an ultra-thin cross section accurately located through the feature of interest. While much effort has been invested in the development and refinement of Ga+ FIB techniques and instrumentation, there are problems due to the physics of the ion-solid interaction. The problem of surface amorphization limits the quality of the TEM samples and its significance increases as the feature size and the specimen thickness decrease. In Ga+ FIB milling of silicon, the amorphous damage layer consists of amorphous Si doped with implanted Ga. This damage layer is caused by ions that strike the surface of the silicon and are subsequently scattered laterally as a result of collisions with the Si atoms.
Best Paper Selection

Wang J, Liang H, Kang H, Gong Y. Understanding health information technology induced medication safety events by two conceptual frameworks. Appl Clin Inform 2019;10:158–67 https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0039-1678693 Lee JY, van Karnebeek CDM, Wasserman WW. Development and user evaluation of a rare disease gene prioritization workflow based on cognitive ergonomics. J Am Med Inform Assoc 2019;26(2):124–33 https://academic.oup. com/jamia/article/26/2/124/5235389 Patterson ES, Su G, Sarkar U. Reducing delays to diagnosis in ambulatory care settings: A macrocognition perspective. Appl Ergon 2020 Jan;82:102965 https://www.sciencedirect. com/science/article/pii/S0003687019301826? via%3Dihub
Effect of Gamma Irradiation on Total Phenolic Contents and Antioxidant Activities of Satureja Hortensis, Thymus Vulgaris, and Thymbra Spicata from Turkey

In this study, the effect of gamma irradiation on the total phenolic content and antioxidant activity of Satureja hortensis, Thymus vulgaris, and Thymbra spicata was evaluated. Plants irradiated in a 60Co irradiator to 0, 1.2, 3.0, and 5.1 kGy at 25°C. Control and irradiated samples were extracted with methanol. The antioxidant activity of methanol extracts was determined using phosphomolybdenum assay and the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method. The total phenolic content in three spices was found to decrease with irradiation except at 5.1 kGy for S. hortensis. The DPPH radical scavenging activity of the extracts decreased after irradiation.
Halloumi cheese: the product and its characteristics

Halloumi, the traditional cheese of Cyprus, is extremely popular in the Middle East and the Mediterranean regions of Europe and in recent years exports from Cyprus have risen. The basic cheesemaking process places halloumi in the family of white brined cheeses, but some of its characteristics are quite unique. This paper reviews the studies that have been carried out on the chemical composition, manufacturing procedure(s), sensory quality and storage of halloumi, and considers some proposed developments, such as the use of reconstituted milk powders or homogenized milk.
IMPACT OF ELEMENTAL SULFUR FERTILIZATION ON AGRICULTURAL SOILS. II. EFFECTS ON SULFUR-OXIDIZING POPULATIONS AND OXIDATION RATES

Effects of elemental sulfur fertilization on sulfur-oxidizing populations, rhodanese activity, total sulfur content and sulfur oxidation rates in the 0- to 15-cm zone of two Grey Luvisolic soils were assessed. Heterotrophic sulfur oxidizers were the most abundant sulfur oxidizers detected in both soils. Elemental sulfur fertilization caused an increase in populations of autotrophic thiosulfate-oxidizing micro-organisms, and a threefold increase in rhodanese and sulfur-oxidizing activity in a Waitville soil. In contrast, sulfur fertilization did not stimulate autotrophic thiosulfate oxidizers in a Loon River soil and the greatest increase in rhodanese and sulfur oxidation rates was only 31%. The response to sulfur application was biphasic however, and subsequent additions of sulfur fertilizer resulted in a decline in oxidation rates. Total sulfur content of sulfur-treated soils indicated that most of the sulfur applied was still present in the sampled zone. These results imply that prediction of sulfate re.
An Energy Efficient Reinforcement Learning Based Clustering Approach for Wireless Sensor Network

Clustering is known to conserve energy and enhance the network lifetime of Wireless Sensor Network (WSN). Although, the topic of energy efficiency has been well researched in conventional WSN, but it has not been extensively studied. In the research, Reinforcement Learning (RL) based energy-aware clustering algorithm is proposed by which the neighboring nodes in the cluster selects an appropriate Cluster Head (CH) by observing the environmental conditions like as energy consumption and coverage that is computed as distance from the CH to the Base Station (BS). An optimal cluster is selected by each neighboring node, which minimized the energy consumption and network lifetime. The problem of selecting an optimal CH is resolved using the RL approach. Using the RL approach, the CH having the highest reward point is selected for data communication. The results show that energy saving of 7.41%, 3.27%, 4.03%, and 2.79 % is achieved for 100, 200, 300, and 400 deployed nodes, respectively.
Behavior of bubbles in glassmelts. III - Dissolution and growth of a rising bubble containing a single gas

Finite difference solutions of the mass transport equations governing the dissolution (growth) of a rising gas bubble, containing a single gas, in a glassmelt were obtained. These solutions were compared with those obtained from an approximate procedure for a range of the controlling parameters. Applications were made to describe various aspects of O2 and CO2 gas-bubble behavior in a soda-lime-silicate melt.
Short‐time diffusion coefficients and high frequency viscosity of dilute suspensions of spherical Brownian particles

We study the short‐time collective and self‐diffusion coefficients, the rotational self‐diffusion coefficient, and the high frequency effective viscosity of a suspension of spherical Brownian particles. At low volume fraction these transport coefficients are given by integrals of hydrodynamic pair interactions. Using exact series expansions in powers of the inverse distance between centers of a pair of particles, we obtain accurate values for the low density transport coefficients. We consider hard spheres with mixed slip–stick boundary conditions, as well as spherical liquid droplets with an internal viscosity different from the bulk. We show that the transport coefficients depend strongly on the particle model.
An XPS analysis of different SiO2 modifications employing a C 1s as well as an Au 4f7/2 static charge reference

Four different silica modifications—thermally grown SiO2, quartz glass, silicalite and silica gel—have been investigated by XPS. Binding energies for Si 2p, Si 2s and O 1s were obtained by employing different methods of static charge referencing. In any case, a C 1s references was used as usual. In another experiment, deposited 20 nm gold particles were used to provide an Au 4f7/2 binding energy (BE) reference. The two different charging correction procedures result in essentially identical BE data. Furthermore, the results confirm that different modifications of silica give substantially the same relevant BEs in XPS. Though the investigated samples are characterized by quite different concentrations of silanol groups, no significant effect on the measured BEs has been found. On the other hand, the analysed silica samples are observed with quite different Si 2p and O 1s peaks widths. This effect is discussed in terms of differential charging. A rather extensive compilation of XPS literature BEs of silica modifications is given.
Laboratory Study on Leachate Treatment by Electrocoagulation Using Fly Ash and Bottom Ash as Supporting Electrolytes

AbstractIn this study, the treatment of stabilized landfill leachate by electrocoagulation (EC) batch experiments was carried out. Commercially pure aluminum electrodes were used for conducting EC. A 67% chemical oxygen demand (COD) removal was observed when electrocoagulation was performed on landfill leachate for an electrolysis time of 30 min with a current density of 666.66 A/m2. EC was compared with the classical chemical coagulation (CC) process via COD removal. The comparison results with 333.33 A/m2 current densities indicated that the EC process has higher treatment performance than CC process with an alum dosage of 1.4 g/200 mL. Experiments were carried out to improve the COD removal and heavy metal removal by adding fly ash F, fly ash C, and bottom ash as supporting electrolyte. Fly ash F showed a higher COD and heavy metal removal efficiencies of 74.3 and 91.6% respectively, when compared with bottom ash and fly ash C. The results of the study reveal that electrocoagulation can be used for.
COMPARISON OF MULTIVARIATE CALIBRATION METHODS FOR QUANTITATIVE SPECTRAL ANALYSIS

The quantitative prediction abilities of four multivariate calibration methods for spectral analyses are compared by using extensive Monte Carlo simulations. The calibration methods compared include inverse least-squares (ILS), classical least-squares (CLS), partial least-squares (PLS), and principal component regression (PCR) methods. ILS is a frequency-limited method while the latter three are capable of full-spectrum calibration. The simulations were performed assuming Beer's law holds and that spectral measurement errors and concentration errors associated with the reference method are normally distributed. Eight different factors that could affect the relative performance of the calibration methods were varied in a two-level, eight-factor experimental design in order to evaluate their effect on the prediction abilities of the four methods. It is found that each of the three full-spectrum methods has its range of superior performance. The frequency-limited ILS method was never the best method, although in the presence of relatively large concentration errors it sometimes yields comparable analysis precision to the full-spectrum methods for the major spectral component. The importance of each factor in the absolute and relative performances of the four methods is compared.
The Quest for Relics: Massive compact galaxies in the local Universe

Abstract Observations at high redshift reveal that a population of massive, quiescent galaxies (called red nuggets) already existed 10 Gyr ago. These objects undergo a significant size evolution over time, likely due to minor mergers. In this work we present an analysis of local massive compact galaxies to assess if their properties are consistent with what is expected for unevolved red nuggets (relic galaxies). Using integral field spectroscopy (IFS) data from the MaNGA survey from the Sloan Digital Sky Survey (SDSS), we characterized the kinematics and properties of stellar populations of massive compact galaxies, and find that these objects exhibit, on average, a higher rotational support than a control sample of average sized early-type galaxies. This is in agreement with a scenario in which these objects have a quiet accretion history, rendering them candidates for relic galaxies.
MONEY, SEARCH, AND COSTLY MATCHMAKING

I examine the robustness of monetary equilibria in a random-matching model, where a more efficient mechanism for trade is available. Agents choose between two trading sectors: the search and the intermediated sector. In the former, trade partners arrive randomly and there is a trading externality. In the latter, a costly matching technology provides deterministic double-coincidence matches. Multiple equilibria exist with the extent of costly matching endogenously determined. Money and “mediated” trade may coexist. This depends on the size of the probability of a trade, relative to the cost of deterministic matching. This outcome is inferior for an increasing-returns externality. Under certain conditions, regimes with only costly matching are welfare superior to monetary regimes with random matching.
Post-starburst galaxies in different environments

Abstract Post-starburst galaxies (PSBGs) are systems that experienced a burst followed by a rapid quenching of star formation. However, it is still unclear what causes these events and what is the environmental role in the origin of PSBGs. To address this, we analysed sizes, morphologies, ages, and metallicities of PSBGs at 0.05 ≤ z ≤ 0.1 in groups and clusters of galaxies. We find a statistically significant excess of compact PSBGs in groups compared to a control sample of passive galaxies. Satellite PSBGs in groups tend to be more compact compared to their counterparts in clusters. Additionally, the PSBGs in groups have smaller T-type values and are likely to be found in inner group regions compared to PSBGs in clusters. Our results are compatible with dissipative wet merger events being an important mechanism responsible for the origin of PSBGs in groups, but other – less dissipative – processes may be producing PSBGs in cluster environments.
150 YEARS OF THE OIL PRICE–MACROECONOMY RELATIONSHIP

We use the longest span data that have ever been studied before (from 1870 to 2014) to investigate the relationship between the price of oil and the level of economic activity in the United States. In the context of a bivariate (identified) structural generalized autoregressive conditional heteroscedasticity (GARCH)-in-Mean VAR in real output growth and the change in the real price of oil, we find that uncertainty about oil prices has had a negative and significant effect on real output. We also find that the responses of real output growth to positive and negative shocks are not very informative of whether they are symmetric or asymmetric, and that accounting for oil price uncertainty tends to amplify the negative dynamic response of real output growth to unfavorable (positive) oil price shocks.
Heat transfer with coiled wire turbulence promoters

An experimental study of forced convection heat transfer and frictional power loss for water flowing in a vertical tube is reported in this paper. The study investigates the effect of coiled wire turbulence promoters of various pitch to diameter ratio (1.00–5.50) upon the Nusselt Prandtl modulus Nu/Pr1/3 and Fanning friction factor Cf for three different wire diameters, 0.052-in. , 0.063-in. and 0.072-in. Analysis of the computed results indicates that heat transfer increases by as much as 280%, though at the cost of much larger increase in frictional power loss. Consequently, coiled wire turbulence promoters can be used with advantage for cases where pumping power is not the dominating factor and reduction in weight and size of the equipment is more important. The present results and those of three previous investigations of heat transfer in tubes with coiled wire turbulence promoters were satisfactorily correlated by the expression which was found to be independent of the tube diameter, wire diameter, pitch to diameter ratio and the test fluid. On expose dans le travail actuel une etude experimentale du transfert de la chaleur par convection forcee et de la perte d'energie par frottement dans le cas de l'eau qui coule dans un tube vertical. L'etude embrasse l'effet d'agents de turbulence faits en fil enroule (et dont le rapport entre la pente par rapport a l'axe et le diametre varie entre 1.00 et 5.50) sur le module de Nusselt et Prandtl Nu/Pr1/3 et le coefficient de frottement de Fanning Cf, dans le cas de trois diametres differents de fil, a savoir 0.052′, 0.063′ et 0.072′. L'analyse des resultats calcules indique que le transfert de la chaleur augmente jusqu'a 280%, mais cela se fait au prix d'un accroissement bien plus considerable de la perte en energie due au frottement. Il s'en suit qu'on peut utiliser avantageusement les agents de turbulence en fils enroules dans les cas ou l'energie requise pour le pompage n'est pas le facteur primordial, mais ou la reduction en poids et en dimensions de l'outil-lage est plus importante. On a etabli une correlation satisfaisante entre les resultats actuels et ceux de trois etudes precedentes de transfert de la chaleur dans des tubes en presence d'agents de turbulence formes de fils enroules, au moyen de l'expression: On a trouve que la dite expression ne dependait pas du diametre du tube, du diametre du fil, du rapport entre l'inclinaison par rapport a l'axe et le diametre, et du fluide d'essai.