Miracle-dz/UniFAR-FTUs huggingface dataset:
REMOTE VISUALIZATION AND NAVIGATION OF 3D MODELS OF ARCHEOLOGICAL SITES

Abstract. The remote visualization and navigation of 3D data directly inside the web browser is becoming a viable option, due to the recent efforts in standardizing the components for 3D rendering on the web platform. Nevertheless, handling complex models may be a challenge, especially when a more generic solution is needed to handle different cases. In particular, archeological and architectural models are usually hard to handle, since their navigation can be managed in several ways, and a completely free navigation may be misleading and not realistic. In this paper we present a solution for the remote navigation of these dataset in a WebGL component. The navigation has two possible modes: the ”bird’s eye” mode, where the user is able to see the model from above, and the ”first person” mode, where the user can move inside the structure. The two modalities are linked by a point of interest, that helps the user to control the navigation in an intuitive fashion. Since the terrain may not be flat, and the architecture may be complex, it’s necessary to handle these issues, possibly without implementing complex mesh-based collision mechanisms. Hence, a complete navigation is obtained by storing the height and collision information in an image, which provides a very simple source of data. Moreover, the same image-based approach can be used to store additional information that could enhance the navigation experience. The method has been tested in two complex test cases, showing that a simple yet powerful interaction can be obtained with limited pre-processing of data.
An Experimental and Computational Investigation of a 3D, l/h=5 Transonic Cavity Flow

Abstract : This paper presents an investigation of a transonic flow (M = 0.85) over a rectangular cavity having a length-to-depth ratio of 5. Velocities were measured inside the cavity on the central plane and two off-centre planes using a two-component particle image velocimetry system. These measurements were supported by surface flow visualisation, and mean and time-varying surface pressure measurements. The flow was also simulated using an unsteady Reynolds-averaged Navier Stokes code, with a realizable k-epsilon turbulence model. It is shown that this CFD model does not capture all the characteristics of the flowfield correctly. However, by using this integrated experimental and computational approach we have been able to identify the presence of new vortical structures within the cavity and point out the importance of free shear layer flexibility in the cavity oscillation process.
Application of a Genetic Algorithm Associated With Adhesive Joint Analysis to the IC Chip Pick-up Process

In the condition investigated here, a concentrated force is applied to both IC chip and blue tape bonded by an adhesive under pin–pin boundary conditions. The experimental results show that even though IC chips of 0.1 mm thickness are subjected to a concentrated force of 4.8 N, they cannot be fully separated from the blue tape and fail easily during the pick-up process. However, when IC chips of 0.34 mm thickness are subjected to a concentrated force of only 3.5 N, they can be fully separated from the blue tape without breakage. These two experimental findings are then explored analytically by applying the C++ program of the genetic algorithm associated with adhesively bonded joint analysis to the IC chip pick-up process. In accordance with the experimental results, the results for the 0.1 mm thick IC chips reveal no solutions for the material properties or adhesive thickness to satisfy the conditions of the IC chip successful pick-up process, although those for the 0.34 mm thick IC chips show solutions for the values of both the elastic modulus and the adhesive layer's thickness. As regards the easy failure of IC chips with 0.1 mm thickness, if the blue tape's mechanical properties are appropriately chosen and then used in this process and its elastic modulus is greater than one-tenth that of the IC chips, the probability of the IC chips being fully separated from the blue tape can be expected to increase.
Adjustment of wind farm power output through flexible turbine operation using wind farm control

When the installed capacity of wind power becomes high, the power generated by wind farms can no longer simply be that dictated by the wind speed.With sufficiently high penetration, it will be necessary for wind farms to provide assistance with supply-demand matching. The work presented here introduces a wind farm controller that regulates the power generated by the wind farm to match the grid requirements by causing the power generated by each turbine to be adjusted. Further benefits include fast response to reach the wind farm power demanded, flexibility, little fluctuation in the wind farm power output and provision of synthetic inertia.
Linked data for libraries: benefits of a conceptual shift from library-specific record structures to RDF-based data models

Contemporary metadata principles and standards tended to result in document-centric rather than data-centric; human-readable rather than machine-processable metadata. In order for libraries to create and harness shareable, mashable and re-usable metadata, a conceptual shift can be achieved by adjusting current library models such as Resource Description and Access (RDA) and Functional Requirements for Bibliographic Records (FRBR) to models based on Linked Data principles. In relation to technical formats, libraries can leapfrog to Linked Data technical formats such as the Resource Description Framework (RDF), without disrupting current library metadata operations. This paper provides six key recommendations for libraries and standards agencies. These include rising to the challenges and embracing the opportunities presented by current technological trends, adopting minimal requirements of Linked Data principles, developing ontologies, deciding on what needs to be retained from current library models, becoming part of the Linked Data cloud, and developing mixed-metadata (standards-based and socially-constructed) approaches. Finally, the paper concludes by identifying and discussing five major benefits of such metadata re-conceptualisation. The benefits include metadata openness and sharing, serendipitous discovery of information resources, identification of zeitgeist and emergent metadata, facet-based navigation and metadata enriched with links.
Comparative Transcriptional Profiling Established the Awn as the Major Photosynthetic Organ of the Barley Spike While the Lemma and the Palea Primarily Protect the Seed

The lemma, palea, and awn of a barley (Hordeum vulgare L.) spike are photosynthetic organs that supply the developing seed with carbohydrates. The lemma and palea also enclose the seed and protect it from pathogens and insects. Despite the important roles they play, little information exists on gene expression in these organs that identifies their function. In this study, we compared gene expression among the lemma, palea, awn, and developing seed of barley during grain filling using the Barley1 Genome Array to identify highly expressed genes involved in the primary function of these organs. Hierarchical clustering and mixed model analysis revealed that the lemma and palea have closely related gene expression patterns. In addition, the lemma and palea overexpressed defense‐related genes compared with the awn. The awn preferentially expressed genes for photosynthesis, the biosynthesis of chlorophyll and carotenoids, and reactive oxygen species scavenging. This suggests the lemma and palea are mainly protective organs whereas the awn is primarily a photosynthetic structure. The seed was enriched with genes for the biosynthesis of starch, storage proteins, enzyme inhibitors, and cell proliferation.
Security Mechanisms on Web-Based Exams in Introductory Statistics Community College Courses

The credibility of unsupervised online exams is an ongoing concern in higher education. Proctoring, in the form of physical or remote supervision, has been the main mechanism for maintaining academic integrity. However, both forms of proctoring are expensive and inconvenient. Several researchers have examined security mechanisms as a substitute for proctoring and obtained mixed results. This article describes a quasi-experimental study, the main goal of which was to examine the effectiveness of nonbiometric security mechanisms. The security mechanisms were selected based on the taxonomy of cheating reduction techniques rooted in the fraud triangle theory. The security mechanisms were considered effective if the scores were equivalent or lower on the unproctored exams. Two one-sided dependent t tests were used to test for equivalence of scores on two sets of proctored and unproctored exams in face-to-face (N = 704), hybrid (N = 91), and online (N = 55) introductory statistics community college courses. In the first set, the proctored exam was followed by the unproctored exam; in the second set, the order was reversed. In the first set, the scores on proctored and unproctored exams were equivalent in face-to-face and online groups, but students in the hybrid group had significantly lower scores on the unproctored exam. In the second set, the students’ scores were lower on the unproctored exam in all groups. The study’s results suggest that the used security mechanisms were effective.
Evaluation of antibacterial activity of extracts fr om Calendula aventis flowers

Calendula arvensis (C.A.) is one of the herbs u sed in traditional medicine in Morocco , Due to it s essential oil it is recognized by its smell and warmth character istic . This work aims to evaluate the antibacterial activity of C.A. flower extracts , Hexanolic and methanolic extrac ts were obtained by the method of soxhlet , whil e aqueous extract was obtained by maceration in cold water. A ntibacterial activity screening was conducted by th e well diffusion method according to the clinical and labo ratory standard institute guidelines using 6 Gram positive and 7 Gram negative bacteria (sensitive and multidrug-res istant) . The results indicated that , the methanol ic extracts of C.A. flowers generally showed high inhibitory activ ity against Gram-positive and Gram negative bacte ria except Acinetobacter baumanii , Proteus mirabilis and Lis teria monocytogenes, The C.A. flowers hexanolic e inhibited all bacteria of Gram-positive and Gram n egative bacteria except, Staphylococcus aureus MRSA , Streptococcus agalactiae and Acinetobacter bauma nii , There were no inhibitory effects of the aqueous extracts against all tested bacterial strains except Rhodoc occuss equi and Morganella morganii, MICs values of methanolic extracts were between 12.5-25µg/ml . while MICs of values of hexanolic extracts were between 6.2512.5 µg/ml . In conclusion , the obtained results show a n antibacterial potency of organic extracts of C. A. flowers. C.A. flowers Hexanolic extracts were bactericidal for most bacteria while methanolic extracts were ba cteriostatic .
Effect of Different Types of Plants ( Lemna Sp., Azolla filiculoides and Alfalfa ) and Artificial Diet (With Two Protein Levels) on Growth Performance, Survival Rate, Biochemical Parameters and Body Composition of Grass Carp ( Ctenopharyngodon idella )

A growth trial experiment was conducted for 90 days to evaluate between two aquatic plants (Lemna sp. and Azolla filiculoides), a xerophilous plant (Alfalfa) and two formulated diets with different protein levels (25 and 35%) on growth performance, survival rate, biochemical parameters and body composition of grass carp (Ctenopharyngodon idella). Initial weight of grass carp was 15.41 ± 0.51 g in five treatments with three replicates in each treatment experiments under field and fiberglass condition. The grass carp in experimental treatments were fed by Fed plant origin diet with 20 percent of body weight and formulated diet with 5 percent of body weight (3 times a day). Growth performance, survival rate, Feed Conversion Ratio (FCR), Specific Growth Rate (SGR), Mean Corpuscular Volume (MCV), Mean Corpuscular Hemoglobin (MCH), hematocirit, hemoglobin and total protein were found higher for alfalfa diet group compared to all other experimental diets (P 0.05). And also in growth parameters, A. filiculoides and formulated feed with 35% protein was not significantly different from each other (P<0.05). In blood factors, there was not observed any significant differences in Mean Corpuscular Hemoglobin Concentration (MCHC), White Blood Cell (WBCs), red blood corpuscular (RBCs), glucose, cholesterol and chortisol (P<0.05) between treatments. Also in body composition the highest lipid was observed in group fed with pelleted diet (25% percent protein) however, it had not significant difference to group fed with pelleted diet (35% percent protein) (P<0.05) and all treatments did not show any significant differences in moisture, protein and ash measurements among each other (P<0.05).
The dark matter density at the Sun’s location

Aims. We derive the value of the dark matter density at the Sun’s location ( ) without globally mass-modeling the Galaxy. Methods. The proposed method relies on the local equation of centrifugal equilibrium and is independent of i) the shape of the dark matter density profile, ii) knowledge of the rotation curve from the galaxy center out to the virial radius, and iii) the uncertainties and the non-uniqueness of the bulge/disk/dark halo mass decomposition. Results. The result can be obtained in analytic form and it explicitly includes the dependence on the relevant observational quantities and takes their uncertainties into account. By adopting the reference, state-of-the-art values for these, we find = 0:43(11)(10) GeV/cm 3 , where the quoted uncertainties are respectively due to the uncertainty in the slope of the circular-velocity at the Sun location and the ratio between this radius and the length scale of the stellar exponential thin disk. Conclusions. We obtained a reliable estimate of , that, in addition has the merit of being ready to take into account any future change/improvement in the measures of the observational quantities it depends on.
Exploring the relationship between anxiety and usability evaluation - an online study of Internet and wiki anxiety

Even though learning technology is becoming pervasive, there is evidence suggesting that many students feel anxious about using Information Technology resources such as computers and the Internet, with females generally being more anxious towards technology. Anxious people may still have to use IT as University courses promote the acquisition of transferable skills. The focus towards high IT usage may put anxious users at a disadvantage in education as traditional methods of knowledge dissemination are eroded. As anxiety affects the nature of interaction with a user interface, careful attention to usability design may hold the key to reducing this anxiety and allow students to comfortably interact with highly beneficial learning technology. As part of course requirements, 125 second year students in Psychology used a wiki system in support of the production of their final year group projects. A wiki allows users to add, edit and amend information, page design and navigational structure (via the use of in-text hyperlinks) through the use of wiki markup language or a simple text editor. This offered the opportunity to explore the relations between anxiety and usability of wikis using newly developed measures for this specific user interface. It was found that wiki anxiety, Internet anxiety and state anxiety scores were highly correlated providing validity to the anxieties being measured. Wiki anxiety had a strong negative relationship with usability evaluation of the wiki. Females were also found to be more Internet and wiki anxious and rated the wiki as less usable than males. Additionally higher anxiety was related with lower use of the wiki. The results are discussed in terms of their implications for usability evaluation, IT anxiety research and their implications on higher education drive to further utilize IT applications as learning aids. Limitations in the measure of self-reported usability are also discussed.
Optimal Routing for Heterogeneous Fixed Fleets of Multicompartment Vehicles

We present a metaheuristic called the reactive guided tabu search (RGTS) to solve the heterogeneous fleet multicompartment vehicle routing problem (MCVRP), where a single vehicle is required for cotransporting multiple customer orders. MCVRP is commonly found in delivery of fashion apparel, petroleum distribution, food distribution, and waste collection. In searching the optimum solution of MCVRP, we need to handle a large amount of local optima in the solution spaces. To overcome this problem, we design three guiding mechanisms in which the search history is used to guide the search. The three mechanisms are experimentally demonstrated to be more efficient than the ones which only apply the known distance information. Armed with the guiding mechanisms and the well-known reactive mechanism, the RGTS can produce remarkable solutions in a reasonable computation time.
The simulation of low-level equatorial local winds in Peninsular Malaysia during the haze episode of 1997 through the LADM

Weak low level winds in the equatorial region pose a problem in the dispersion and diffusion of local pollutants, particularly, when large-scale vegetation burning causes transboundary haze that lasts for few weeks during which the air quality may deteriorate and cause health problems in the neighbouring countries. This paper investigates the patterns of the low level mesoscale wind flow in Kuala Lumpur in which the pattern s of the local equatorial low level wind fields were simulated during the height of the major haze episode of Southeast Asia in September 1997. The backward air trajectories from Kuala Lumpur in Peninsular Malaysia that ended on 17 September 1997 showed that nearly all the wind paths originated from Sumatera at the three pressure height levels of 950, 850 and 700 hPa. The mesoscale wind field patterns that influenced the dispersion of smoke from the burning areas that originated from Sumatera, Indonesia were simulated in this study by utilising the Lagrangian Atmospheric Dispersion Model (LADM). Outputs of the low level wind field patterns generated showed the existence of recirculation of air particles from the diurnal regimes such as the land and sea breezes in addition to the weak prevailing winds across the Kuala Lumpur region during the period when pollution levels were high. The patterns revealed that the weak strength of the local winds did not promote effective dispersion of pollutants advected over the area from transboundary sources a few hundreds of kilometres away. Keywords: equatorial region, haze, low level winds, Malaysia, mesoscale wind forecast, Southeast Asia
A class of Ramsey-extremal hypergraphs

In 1991, McKay and Radziszowski proved that, however each 3-subset of a 13-set is assigned one of two colours, there is some 4-subset whose four 3-subsets have the same colour. More than 25 years later, this remains the only non-trivial classical Ramsey number known for hypergraphs. In this article, we find all the extremal colourings of the 3-subsets of a 12-set and list some of their properties. Using the catalogue, we provide an answer to a question of Dudek, Fleur, Mubayi and R\"odl about the size-Ramsey numbers of hypergraphs.
Proceduralization and Skill-specificity of English Modals as a Result of Input Form-focused Practice

This study aims to investigate the effect of input form-focused practice on the proceduralization of English modals. It also addresses the possibility of skills becoming specific to the context of practice. A pre-test, post-test and delayed post-test design was used where the procedural knowledge was specifically operationalized through the groups‘ performance on a timed dual- task JG test, and skill-specificity through a timed dual-task completion test. Two intact classes of intermediate EFL learners were randomly assigned to an input and a control-group. The input-group received explicit grammar instruction and a combination of three input tasks. The control-group was just exposed to the identical texts followed by some questions irrelevant to the target structure. Results showed that on the post-test, the input-group outperformed the control group in both measures of procedural knowledge, and skill-specificity. The group was capable of comprehension as well as production of the target structure.
PLANETARY CONSTRUCTION ZONES IN OCCULTATION: DISCOVERY OF AN EXTRASOLAR RING SYSTEM TRANSITING A YOUNG SUN-LIKE STAR AND FUTURE PROSPECTS FOR DETECTING ECLIPSES BY CIRCUMSECONDARY AND CIRCUMPLANETARY DISKS

The large relative sizes of circumstellar and circumplanetary disks imply that they might be seen in eclipse in stellar light curves. We estimate that a survey of ∼104 young (∼10 million year old) post-accretion pre-main-sequence stars monitored for ∼10 years should yield at least a few deep eclipses from circumplanetary disks and disks surrounding low-mass companion stars. We present photometric and spectroscopic data for a pre-main-sequence K5 star (1SWASP J140747.93−394542.6 = ASAS J140748−3945.7), a newly discovered ∼0.9 M☉ member of the ∼16 Myr old Upper Centaurus–Lupus subgroup of Sco-Cen at a kinematic distance of 128 ± 13 pc. This star exhibited a remarkably long, deep, and complex eclipse event centered on 2007 April 29 (as discovered in Super Wide Angle Search for Planets (SuperWASP) photometry, and with portions of the dimming confirmed by All Sky Automated Survey (ASAS) data). At least five multi-day dimming events of >0.5 mag are identified, with a >3.3 mag deep eclipse bracketed by two pairs of ∼1 mag eclipses symmetrically occurring ±12 days and ±26 days before and after. Hence, significant dimming of the star was taking place on and off over at least a ∼54 day period in 2007, and a strong >1 mag dimming event occurring over a ∼12 day span. We place a firm lower limit on the period of 850 days (i.e., the orbital radius of the eclipser must be >1.7 AU and orbital velocity must be <22 km s−1). The shape of the light curve is similar to the lopsided eclipses of the Be star EE Cep. We suspect that this new star is being eclipsed by a low-mass object orbited by a dense inner disk, further girded by at least three dusty rings of optical depths near unity. Between these rings are at least two annuli of near-zero optical depth (i.e., gaps), possibly cleared out by planets or moons, depending on the nature of the secondary. For possible periods in the range 2.33–200 yr, the estimated total ring mass is ∼8–0.4 MMoon (if the rings have optical opacity similar to Saturn's rings), and the edge of the outermost detected ring has orbital radius ∼0.4–0.09 AU. In the new era of time-domain astronomy opened by surveys like SuperWASP, ASAS, etc., and soon to be revolutionized by Large Synoptic Survey Telescope, discovering and characterizing eclipses by circumplanetary and circumsecondary disks will provide us with observational constraints on the conditions that spawn satellite systems around gas giant planets and planetary systems around stars.
The accessibility of information in computer assisted learning process for persons with disabilities

The access to education and the new technologies for the persons with disabilities is the main objective of the action plans initiated in the EU but also in Romania. The accessibility of information for visual impaired persons must be seen both in terms of access to educational objects and access to general information available on various sites, using the voice recognition assistive technology and speech synthesis in Romanian. The paper's aim is the presentation of options for the information accessibility to the blind persons and proposes a way to integrate assistive modules into e-learning platform.