Miracle-dz/UniFAR-FTUs huggingface dataset:
A Learner Corpus investigation of Filipino L2 English article use: The way forward for language teachers

As the globalization of English sweeps through Asia, the complex challenges of dealing with heterogeneous classes is an increasing issue. Divergent levels of competency and motivation often result in imbalances in student learning and participation. How does one get an entire class engaged with challenging content without leaving strugglers behind? Can discussion be generated between unlikely consorts? How can all students become motivated to be more active toward their own learning? To address such questions, this paper demonstrates how community and meaningful scholarship can be built through the creation of a self-learning portfolio system, which cultivates student preparation, self-reliance, and maximum involvement in the classroom. Through this mechanism, community membership can increase interaction, promote learning responsibility, stimulate motivation, and reduce anxiety. Consequently, a presence of cooperation is established, developing the foundation on which a successful course can be built.
Complex dynamics of delay-coupled semiconductor lasers: fundamentals and applications

The present thesis is devoted to the study of semiconductor lasers subject to delayed optical feedback and coupling. The complex spectral and dynamical properties of these systems have been investigated using state-of-the-art telecommunications detection technologies. With such tools, we have been able to experimentally characterize previously unknown features in our delay-coupled systems. Along this work, both fundamental and applied results are presented for the different experiments investigated. The first part of the thesis is focusing on the system of the single delayed feedback laser. The problem of feedback characterization is approached from a time scale perspective, relating the dynamical regimes to the characteristic frequencies of the delayed feedback laser. We have empirically found that the ratios of these characteristic frequencies completely determine the dynamical behavior. This constitutes a model independent approach that can be used, for example, to test the validity of numerical models that aim at explaining the dynamical behavior of these lasers. Furthermore, the general extent of our approach is validated by measuring various laser diodes with distinct characteristics. Specific properties of the dynamics of the single laser with feedback system have also been characterized by means of the intensity autocorrelation function. For this purpose, the experimental autocorrelation is compared with the autocorrelation obtained from a model of a stochastic linear oscillator with delay. The relation between the model parameters and the experimental system parameters is analyzed and discussed together with the limits of validity of this approach. In the second part, systems with two delay-coupled lasers are studied. The phenomenon of chaos synchronization is explored in two different configurations: a unidirectional coupling configuration where the delayed feedback laser signal is optically coupled to a second laser, and a bidirectional scheme of two mutually coupled lasers with self-feedback. In the first configuration, the relation between the consistency of the dynamics and the synchronizability with the second laser is studied. In the latter scheme, the robustness of the synchronized state is characterized against detuning in parameters and noise. The knowledge gained in the synchronization experiments is used to implement a classical public-channel secure-key exchange protocol in the bidirectional coupling scheme.
Site Survey

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Does Academic Level Affect Student Perceptions of Threaded Discussions in Online Learning

This research is a continuation of a study that examined students' attitudes and perceptions of the use of threaded discussions in online courses. The focus of this particular study was on the present academic level of the student and their perceptions of the various aspects of threaded discussions in online learning. University students from the freshman level through the doctorate level were included in the data examination. Results indicate that students' at all academic levels generally enjoy engaging in the required threaded discussions but are somewhat neutral about their effectiveness and usefulness. In addition, when an option between a written assignment or a threaded discussion, all academic levels showed a clear preference for threaded discussions. When confronted with the option of taking a course in either the traditional, face-to-face format or online, a definite preference was shown for the traditional face-to-face course format. However, there was strong evidence that the present academic level has an effect of the students' perceptions of online learning in general and specifically their perceptions of threaded discussions.
Far infrared spectroscopy and other spectral and thermal properties of [Li@C60]PF6

Abstract The endohedral fullerene [Li@C60]+PF6− was characterized by differential scanning calorimetry (DSC), by electronic absorption spectroscopy in the spectral range from 195 to 800 nm and by FT-IR and far-infrared spectroscopy. [Li@C60]+PF6− shows a sharp melting point with the onset at 86 °C and peak at 90 °C and melting enthalpy of 9.5 kJ/mol. The electronic absorption spectrum of [Li@C60]+PF6− in the UV shows both a hypsochromic shift and a hyperchromic effect with respect to the corresponding electronic transitions of C60. In the mid-infrared spectrum [Li@C60]+ cation displays the typical four band pattern of C60, with small shifts. The far-infrared spectroscopy appears to be the most effective diagnostic tool to distinguish between C60 and endohedral fullerenes like [Li@C60]+. In fact, while C60 does not show any far-infrared vibration, [Li@C60]+PF6− shows four far-infrared bands. Also in an astrochemical perspective the search of endohedral fullerenes must rely mainly on the far-infrared spectral region.
ON THE CLUSTER PHYSICS OF SUNYAEV–ZEL'DOVICH AND X-RAY SURVEYS. II. DECONSTRUCTING THE THERMAL SZ POWER SPECTRUM

Secondary anisotropies in the cosmic microwave background are a treasure-trove of cosmological information. Interpreting current experiments probing them are limited by theoretical uncertainties rather than by measurement errors. Here we focus on the secondary anisotropies resulting from the thermal Sunyaev–Zel'dovich (tSZ) effect; the amplitude of which depends critically on the average thermal pressure profile of galaxy groups and clusters. To this end, we use a suite of hydrodynamical TreePM-SPH simulations that include radiative cooling, star formation, supernova feedback, and energetic feedback from active galactic nuclei. We examine in detail how the pressure profile depends on cluster radius, mass, and redshift and provide an empirical fitting function. We employ three different approaches for calculating the tSZ power spectrum: an analytical approach that uses our pressure profile fit, a semianalytical method of pasting our pressure fit onto simulated clusters, and a direct numerical integration of our simulated volumes. We demonstrate that the detailed structure of the intracluster medium and cosmic web affect the tSZ power spectrum. In particular, the substructure and asphericity of clusters increase the tSZ power spectrum by 10%–20% at ℓ ∼ 2000–8000, with most of the additional power being contributed by substructures. The contributions to the power spectrum from radii larger than R500 is ∼20% at ℓ = 3000, thus clusters interiors (r < R500) dominate the power spectrum amplitude at these angular scales.
Journal of Petroleum Technology and Alternative Fuels Fatty acid profile and quality parameters of Ceiba pentandra (L.) seed oil: A potential source of biodiesel

The probable depletion of fossil energy resources has led the international scientific community to direct research towards biofuels, including vegetable oils. Benin has a rich biodiversity with multiple oilseed species, potential sources of biofuels. Among these, Ceiba pentandra was identified and selected for a detailed study of its unconventional vegetable oil. In this order of idea, the harvested seeds were dried in the sun and crushed. It was preserved at 25°C according to the NF T 60-201, 1993 standard. The physicochemical parameters and fatty acids content of C. pentandra vegetable oil have been determined by standard methods. The biofuel potential of this vegetable oil has also been evaluated. The results revealed that C. pentandra vegetable oil is predominant in saturated (40.8%) and polyunsaturated (41.37%) fatty acids. The saturated fatty acids quantified are stearic (20.17%) and palmitic (19.77%), while the most important polyunsaturated fatty acids are linoleic acid (C18:2) (20.95%) and linolelaidic acid (18.28%). Quality indices such as acid (4.52 ± 0.24 mg KOH/g-Oil), peroxide (2.16 ± 0.54 meq O 2 /kg-Oil), saponification (152.79 ± 6.07 mg KOH/g-Oil), iodine (129.79 ± 2.81 mg I 2 /100 g-Oil) and ester (148.27 ± 5.83 mg KOH/g-Oil) shall comply with the recommended standards for biofuels. These values of quality indices coupled with those of lower calorific value (LCV) (~ 40002.26 kJ/kg), refractive index (~ 1.4728 at 30°C) and cetane index (~ 49.70) make it possible to consider the use of this vegetable oil as a fuel oil.
Fast Categorisation of Articulated Human Motion

Visual categorisation of human motion in video clips has been an active field of research in recent years. However, most published methods either analyse an entire video and assign it a single category label, or use relatively large look-ahead to classify each frame. Contrary to these strategies, the human visual system proves that simple categories can be recognised almost instantaneously. Here we present a system for categorisation from very short sequences (“snippets”) of 1–10 frames, and systematically evaluate it on several data sets. It turns out that even local shape and optic flow for a single frame are enough to achieve ≈ 80-90% correct classification, and snippets of 5-7 frames (0.2-0.3 seconds of video) yield results on par with the ones state-of-the-art methods obtain on entire video sequences.
Just noticeable BRIR grid resolution for lateral head movements

Dynamic binaural synthesis is based on discrete grids of binaural room impulse response datasets (BRIRs). These are typically oneor two-dimensional, i.e. they account for horizontal and sometimes also vertical rotational head movements of the listener. The angular grid resolution of BRIR datasets is an important factor regarding the quality and plausibility of dynamic binaural auralisations. The perception of spatially discretised head related transfer functions has been investigated with different approaches in recent studies. In [1] HRTFs, interpolated from grids with different resolution were used to simulate stationary and moving sources for a non-moving listener. In [2] HRTFs, manipulated to exhibit only direction dependent spectral differences while keeping the ITD constant were assessed with respect to just noticeable differences. We [3] examined varying spatial discretisations of BRIR datasets independently for horizontal, vertical, and lateral head movements using anechoic and echoic datasets with frontal sound incidence. For lateral head movements this source-receiver configuration was shown to be particularly uncritical due to the lack of varying ITD and ILD cues. Therefore a new listening test was conducted, examining the just audible grid resolution for lateral head movements and a sound source placed above the head in anechoic environment, assuming this to be the most critical case.
Introduction To Earthquake Engineering

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Evaluating Demands Associated with the Use of Voice-Based In-Vehicle Interfaces

This panel addresses current efforts associated with the evaluation of demands associated with the use of voice-based in-vehicle interfaces. As generally implemented, these systems are perhaps best characterized as mixed-mode interfaces drawing upon varying levels of auditory, vocal, visual, manual and cognitive resources. Numerous efforts have quantified demands associated with these systems and several have proposing evaluation methods. However, there has been limited discussion in the scientific literature on the benefits and drawbacks of various measures of workload; appropriate reference points for comparison (i.e. just driving, visual-manual versions of the task one is looking to replace, etc.); the relationship of demand characteristics to safety; and practical design considerations that can be gleamed from efforts to date. Panelists will discuss scientific progress in the topic areas. Each panelist is expected to present a brief perspective followed by discussion and Q&A.
Designing Assessment In Art

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An Analysis of the 3D Video and Interactive Response Approach Effects on the Science Remedial Teaching for Fourth Grade Underachieving Students.

Elementary school remedial teaching has been promoted for many years in Taiwan but it has primarily been aimed at Chinese and mathematics with little attention being paid to natural sciences. Due to the current shortage of natural science teachers, along with limitations in school budget and manpower, it is difficult to put natural science remedial teaching into practice in elementary schools. This research attempts to establish a new model of remedial teaching that utilizes remote asynchronous video-based instruction to carry out centralized remedial teaching with 3D television and interactive response system. We focused on fourth graders whose science ranking was at the bottom quarter and examined if their grades have improved. Centralized remedial teaching was implemented once a week during school’s noon break and lasted for 40 minutes. The materials used, including the remedial 3D natural science lesson videos and interactive response test questions, were both produced by the university. They were transmitted through the Internet to elementary school teachers who played them on 3D television and students practiced and answered the questions in real time with plickers. Twenty fourth graders from different classes participated in remedial teaching for one semester; the average percentage of test grade ranking in natural science has progressed from 9.19% to 24.12% in their original classes. Previously, the average of T-score in natural science test was 35.80, and after remedial instruction, the T-score average was 42.39. The T-score average improvement is statistically significant (t=3.34, p = .003). The research revealed that this instructional model can improve learning outcome in natural science for underachieving fourth graders, and through the questionnaire, it was also known that the students liked this remedial teaching approach.
THE EFFECT OF ACTELLIC DUST TREATMENT ON THE PROXIMATE AND MINERAL COMPOSITION OF SYNODONTIS NIGRITA AND TILAPIA MARIAE

The high susceptibility of harvested fresh fish to immediate deterioration has resulted in the fundamental need for fish preservation to maintain its nutritional quality, minimize changes in its physical appearance, taste and lengthen shelf life. The insecticide, pirimiphos methyl (actellic dust) has been utilized in the storage of dried products against insect infestation, thereby increasing their shelf life. This study investigated the effect of pirimiphos methyl on the proximate and mineral composition of Synodontis nigrita and Tilapia mariae in Jamieson River which were purchased from the fish landing site in Sapele Delta State, Nigeria. The fish samples were divided into three batches of fresh samples (batch I), oven – dried samples (batch II) and actellic dust treated samples (batch III). The proximate composition (moisture, protein, fat, ash, crude fibre, and carbohydrate) and mineral content (sodium, potassium, calcium, and magnesium) of the samples were determined using the AOAC standard methods. Results showed that actellic dust treatment greatly increased the protein (19.35 to 23.31%), fat (8.12% to 22.31%), and raw fibre content (0.69 to 8.03%) in S. nigrita and protein (7.09 to 25.46%), fat (5.13 to 11.70%), and raw fibre content (3.40 to 14.23%) in T. mariae. The mineral elements analyzed showed no well-defined order across the treatment levels with potassium being the most abundant mineral element in all fish samples. Actellic dust has been shown to improve the proximate composition and shelf life of both fish species studied, and its use as a fish preservative is therefore recommended.
Acceleration of Block-Aware Matrix Factorization on Heterogeneous Platforms

Block-structured matrices arise in several contexts in circuit simulation problems. These matrices typically inherit the pattern of sparsity from the circuit connectivity. However, they are also characterized by dense spots or blocks. Direct factorization of those matrices has emerged as an attractive approach if the host memory is sufficiently large to store the block-structured matrix. The approach proposed in this thesis aims to accelerate the direct factorization of general block-structured matrices by leveraging the power of multiple OpenCL accelerators such as Graphical Processing Units (GPUs). The proposed approach utilizes the notion of a Directed Acyclic Graph representing the matrix in order to schedule its factorization on multiple accelerators. This thesis also describes memory management techniques that enable handling large matrices while minimizing the amount of memory transfer over the PCIe bus between the host CPU and the attached devices. The results demonstrate that by using two GPUs the proposed approach can achieve a nearly optimal speedup when compared to a single GPU platform.
PerFit: An R Package for Person-Fit Analysis in IRT

Checking the validity of test scores is important in both educational and psychological measurement. Person-fit analysis provides several statistics that help practitioners assessing whether individual item score vectors conform to a prespecified item response theory model or, alternatively, to a group of test takers. Software enabling easy access to most person-fit statistics was lacking up to now. The PerFit R package was written in order to fill in this void. A theoretical overview of relatively simple person-fit statistics is provided. A practical guide showing how the main functions of PerFit can be used is also given. Both numerical and graphical tools are described and illustrated using examples. The goal is to show how person-fit statistics can be easily applied to testing of questionnaire data.
Direct mass measurements and ionization potential measurements of the actinides

Abstract The precise determination of atomic and nuclear properties such as masses, differential charge radii, nuclear spins, electromagnetic moments and the ionization potential of the actinides has been extended to the late actinides in recent years. In particular, laser spectroscopy and mass spectrometry have reached the region of heavy actinides that can only be produced only at accelerator facilities. The new results provide deeper insight into the impact of relativistic effects on the atomic structure and the evolution of nuclear shell effects around the deformed neutron shell closure at N = 152. All these experimental activities have also opened the door to extend such measurements to the transactinide elements in the near future. This contribution summarizes recent achievements in Penning trap mass spectrometry and laser spectroscopy of the late actinides and addresses future perspectives.
Low frequency vibrations in disc brakes at high car speed. Part I: experimental approach

The aim of the present paper is to describe a study carried out into low–frequency vibrations in disc brakes. The vibrations which we will describe occur when braking is initiated at high speed and under medium pressures. Experiments, both vibratory and thermal, were conducted in a car and on a dynamometric bench. The brake pads were submitted to tribological tests. The modes and frequencies of vibration were determined experimentally and by means of a finite–element model, and the two foci were correlated. An analysis was made of the noise produced in the car and of its relation to brake vibration. This vibration, which can be considered a form of judder, proved amenable to such examination. It was possible to determine the causes and to prescribe a means of amelioration in the given case. Part II of this paper deals with the mathematical modelling and with computer simulation.
Implementation of a combined algorithm designed to increase the reliability of information systems: simulation modeling

This paper examines the results of experimental studies of a previously submitted combined algorithm designed to increase the reliability of information systems. The data that illustrates the organization and conduct of the studies is provided. Within the framework of a comparison of As a part of the study conducted, the comparison of the experimental data of simulation modeling and the data of the functioning of the real information system was made. The hypothesis of the homogeneity of the logical structure of the information systems was formulated, thus enabling to reconfigure the algorithm presented, - more specifically, to transform it into the model for the analysis and prediction of arbitrary information systems. The results presented can be used for further research in this direction. The data of the opportunity to predict the functioning of the information systems can be used for strategic and economic planning. The algorithm can be used as a means for providing information security.