Miracle-dz/UniFAR-FTUs huggingface dataset:
Modeling Students through Analysis of Social Networks Topics

Educational Data Mining gathers the multiple methods that allow new and useful information extraction from great volumes of data coming from the educational context. The goal of this article is to obtain a model of the students of the Computer Science School of the UNLP from their participation in Facebook. The work describes the process of extraction of latent topics in posts made in public groups related to the School, and the modeling of the students from the topics discovered. Additionally, it includes the preprocessing done to the collected data, which constitutes a fundamental stage since it strongly conditions the performance of the models to be obtained. Finally, obtained results are presented together with conclusions and future lines of work.
Aalborg Universitet Discrimation among different kind of surface defects on Compact Discs

Compact Disc players have problems playing discs with surface defects such as scratches and finger prints. The problem is that handling normal disturbances such as mechanical shocks etc, require a high bandwidth of the controllers which keep the Optical Pick-Up focused and radial tracked on the information track on the disc. In order for the controllers to handle the surface defects it is required that they are nonsensitive to the frequency contents of the defect, since a defect is a disturbance on the measurements. A simple solution to this problem is to decrease the controller bandwidth during the defect. However, due to the variation of defects a more adaptive control strategy would be preferable. In this paper the defects are categorised into three groups. A discriminator is designed, based on the local most discriminating basis vectors of the Karhunen-Loève and Haar bases as well as the mean of groups basis. In these bases the discrimination rule is simple. The defect in question is a member of the group it is closest too. The Karhunen-Loève basis gives a correct classification rate of more than 85.7% with 3 basis vectors and the Haar basis of more than 94.6% with 5 basis vectors.
Infusing Technology into the Balanced Literacy Classroom

e-­‐Journal of Balanced Reading Instruction Volume 1 -­‐ Issue 2 http://www.balancedreadinginstruction. com ©2013 ISSN: 2328-­‐0816 Infusing Technology into the Balanced Literacy Classroom Jennifer W. Shettel, Ed.D. and Kevin Bower, M.Ed. Abstract—This article focuses attention on how technology is being utilized in classrooms, with an emphasis on literacy learning. The authors explore the integration of technology within a balanced literacy classroom and identify three levels of technology integration commonly found within a typical K-12 classroom. Specific examples are provided for each level and classroom vignettes from the second author’s classroom are utilized. In addition, the authors provide suggested resources throughout the article for further exploration.
Information And Communication Technology Usage By Junior High School Students In Ablekuma Central Sub-Metro District, Accra

Information and Communication Technology in the education policy of Ministry of Education made it mandatory for all students to be proficient in ICT literacy skills before coming out of each level of education in Ghana. In furtherance of this policy, ICT was made examinable at both the Basic Education Certificate Examination (BECE)and Senior School Certificate Examination (SSCE). The study examined the extent and character of Junior High School students‘ involvement and interaction with ICT outside the normal school settings in Ablekuma Central sub-metro district of Greater Accra. A researcher-designed questionnaire was used to collect data for the study. Reliability analysis and test-retest carried out on the questionnaire produced Cronbach‘s alpha value of 0.814 and 0.79 validity coefficient. Random Stratified Sampling was used to select 123 students from a group of 564 Junior High School students during the summer of 2014.The study found the public Internet café to be a central activity for Junior High School students in accessing and using ICT outside the traditional school settings. Results of the study also confirmed that ICT has some gender attributes that favoured boys in some way such that its access and usage tend to be biased toward the interest and fashions of boys in a manner that made them more confident and more likely to use ICT than girls.
Blockchain: The Revolution in Trust Management

TRUST is the cornerstone of our relationships; whether in business, society , or with the institutions that govern us. As Internet has extended the sphere of our ability to do business and conduct personal interactions across the world, its trustworthiness has come under stress in past two decades. Our collective journey through the Internet seems inalienable now as almost all the services that we use today rely on it. Anyone who controls the Internet or the information flowing through it, controls and manipulates our access to online services. It had been a continuous quest to bring trustworthiness to the Internet and the services it enables. Invention of blockchain seems to have quenched that quest.
A study on effect of strain-counterstrain in plantar fasciitis

Background: Bipedal locomotion is a unique feature of human beings and has the advantage of upright mobility. Hence, foot becomes the most important weight loading structure and gets the maximum pressure per unit area. Plantar fasciitis is a painful inflammatory process of the plantar fascia, the connective tissue on the sole of the foot. Thus a study was conducted to determine the effect of strain-counterstrain in plantar fasciitis. Methods: 30 individuals aged between 18-35 years both male and female with plantar fasciitis were recruited for the study. The patients were treated for a period of 7 days using the technique of strain-counterstrain. Pre-intervention and post-intervention scores of Plantar Fasciitis Pain and Disability scale were assessed and were analysed using unpaired t-test and repeated ANOVA. Results: There was equal distribution of occurrence of plantar fasciitis among both the genders out of the population of study. A significant difference was noted between the pre and post interventional measure of a type of manual therapy called strain-counterstrain (p<0.0001). The difference between pre intervention and after third day intervention did not show much of a difference. However after fifth day a considerable difference was noted (p <0.0001). It was noted that limited dorsiflexion improved after one week of interventional measure of strain-counterstrain (p <0.0001). Conclusions: The technique of strain-counterstrain which is a type of manual therapy is effective in patients affected by plantar fasciitis. It also showed an improvement in the limited ankle dorsiflexion range.
Competitive interactions across a soil fertility gradient in a multispecies forest

Whether plant competition grows stronger or weaker across a soil fertility gradient is an area of great debate in plant ecology. We examined the effects of competition and soil fertility and their interaction on growth rates of the four dominant tree species in the sub‐boreal spruce forest of British Columbia. We tested separate soil nutrient and moisture indices and found much stronger support for models that included the nutrient index as a measure of soil fertility. Competition, soil fertility and their interaction affected radial growth rates for all species. Each species supported a different alternate hypothesis for how competitive interactions changed with soil fertility and whether competition intensity was stronger or weaker overall as soil fertility increased depended on the context, specifically, species, neighbourhood composition and type of competition (shading vs. crowding). The four species varied slightly in their growth response to soil fertility. Individual species had some large variations in the shapes of their negative relationships between shading, crowding and tree growth, with one species experiencing no net negative effects of crowding at low soil fertility. Goodness‐of‐fit was not substantially increased by models including competition–soil fertility interactions for any species. Tree size, soil fertility, shading and crowding predicted most of the variation in tree growth rates in the sub‐boreal spruce forest. Synthesis. The intensity of competition among trees across a fertility gradient was species‐ and context‐specific and more complicated than that predicted by any one of the dominant existing theories in plant ecology.
Tailored physical activity advice delivered through the Internet: Evaluation of a computerised intervention for adults

Regelmatig bewegen heeft een positieve invloed op onze gezondheid. Onderzoek toont aan dat indien men minstens 30 minuten fysiek actief is aan een matige intensiteit gedurende 5 dagen van de week, het risico op het ontwikkelen van cardiovasculaire aandoeningen, zwaarlijvigheid, diabetes, bepaalde soorten kankers, osteoporose en mentale problemen verkleint. Meer dan 50% van de Vlaamse bevolking beweegt echter onvoldoende. Het is dan ook belangrijk om effectieve interventies ter promotie van fysieke activiteit te ontwikkelen, waarmee we een grote groep mensen kunnen bereiken. Het doel van dit doctoraatsonderzoek is het evalueren van een computergestuurde en geindividualiseerde interventie via het Internet ter promotie van fysieke activiteit bij volwassenen. Deze interventie houdt in dat deelnemers een computergestuurde vragenlijst over beweging invullen, waarna onmiddellijk een bewegingsadvies op maat op het scherm verschijnt. Een gelijkaardige interventie op CD-ROM was reeds eerder door onze vakgroep ontwikkeld en bleek effectief te zijn onder gecontroleerde condities: Volwassenen die in de computerklas van de universiteit een geindividualiseerd advies ontvingen, bleken na 6 maanden meer te bewegen in vergelijking met een groep volwassenen die geen advies hadden gekregen. Voor het huidige project werd het bewegingsadvies op maat via het Internet beschikbaar gemaakt. In een eerste interventiestudie werd het effect van advies op maat vergeleken met een online standaardadvies. Hieruit bleek dat deelnemers het advies op maat positiever beoordeelden dan het standaardadvies maar dat er geen verschil was op vlak van beweging. In een volgende fase werd een nieuwe website ontwikkeld, met centraal een bewegingadvies op maat. Door middel van gebruikerstesten met zowel ervaren als onervaren Internetgebruikers, werd de website gebruiksvriendelijk gemaakt. Een volgende studie toonde aan dat het verspreiden van folders met het adres van deze website niet voldoende was om volwassenen de site te laten bezoeken. Een kort persoonlijk contact vooraf, bleek veel effectiever te zijn. Tenslotte werd in een tweede interventiestudie de effectiviteit van de website nagegaan. Deelnemers die de interventie op een welbepaald tijdstip of gedurende langere tijd kregen, bleken na een half jaar meer te zijn gaan bewegen dan deelnemers die geen interventie kregen. Een bijkomende studie ging na wat de karakteristieken waren van mensen die al dan niet geinteresseerd waren in een bewegingsadvies via het Internet, en het computerprogramma ook hadden doorlopen. Resultaten toonden aan dat er geen verschillen waren wat betreft leeftijd of mate van beweging. Wel toonden er meer vrouwen dan mannen, en meer mensen met een gemiddeld of hogere socio-economisch status (SES) dan met een lagere SES, interesse in een bewegingsadvies op maat. Uit de resultaten van deze onderzoeken kunnen we besluiten dat een website met bewegingsadvies op maat effectief kan zijn om fysieke activiteit te promoten bij een groot deel van de Vlaamse volwassen populatie.
Digital Video Quality Enhancement Based On Weighted Guided Filtering Scheme

— We present a weighted guided image filter (WGIF) to improve filtering and avoid halo artifacts. We know that the previously used local filtering-based edge preserving smoothening technique suffers from halo artifacts and also some drawbacks. To overcome this problem we are introducing an extension method called WGIF method. In this paper WGIF method is applied on digital videos for acquiring high quality. Actually this method is introduced by incorporating an edge-aware weighted into an existing guided image filter (GIF). It has two advantages of both global and local smoothing filter in such a way that its complexity is 0(N) and avoids halo artifacts The output of WGIF results in better visual quality and avoid halo artifacts. WGIF used in image enhancement, image haze removal.
A Novel Speech Separation Based On Ica

Monaural conversation splitting is a well-recognized process. Modern research utilize monitored classification methods to estimate the ideal binary cover up (IBM) inorder to address the issue. In a supervised learning structure, the issue of generalization to conditions different from those in coaching is most essential. This paper presents techniques that require only a little coaching corpus and can generalize to invisible circumstances. The program uses assistance vector machines to understand category hints and then runs on the rethresholding technique inorder to calculate the IBM. A submission fitting method is used to make generalizations to invisible signal-to-noise rate circumstances and voice action recognition centered variation isused to make generalizations to unseen noise circumstances. Methodical evaluation reveals that the recommended strategy generates top quality IBM estimates under invisible circumstances. Hence in this proposed method, a single channel speech enhancement algorithm is intend to offer by constructing a observational signal and noise signal for single channel speech noise reduction based on Independent component analysis (ICA),thereby noise and original speech can be separated through ICA. Hence Simulation results provides that much better peak signal to noise ratio(PSNR) and denoising effect can be procured by using this algorithm.
Janus-faced, multifunctional separator membranes for high-performance lithium-ion batteries

A vigorous expansion of newly emerging application fields, including smart mobile electronics, power tools, (hybrid) electric vehicles, and grid-scale energy storage systems inspires the relentless pursuit of advanced rechargeable power sources with reliable/sustainable electrochemical performance and safety tolerance. Among the numerous power sources, undoubtedly, lithium-ion batteries (LIBs) are listed in the top tier and still garner considerable attention as an appealing electrochemical system to address the challenging issues. A battery separator membrane is supposed to be electrically inert for preventing electrical contact (resulting in safety failures) between electrodes, in addition to its another key role as an ionconducting route. Here, as a multifunctional membrane strategy to break up the stereotypical belief about battery separators, we demonstrate a new class of Janus-faced, dual (ion/electron)conductive/chemically-active (i.e., heavy metal ion-chelating) battery separators based on elaboratelydesigned heterolayered nanomat architecture. The Janus-faced, heterolayered nanomat separators (referred to as “Janus separators”) are fabricated through the in-series, concurrent electrospraying/electrospinning process. The Janus separator is composed of an ion-conductive/metal ion-chelating support layer (= a mat of densely-packed, thiol-functionalized silica particles spatially besieged by polyvinylpyrrolidone (PVP)/polyacrylonitrile (PAN) nanofibers) and a dual-conductive top layer (= a thin mat of polyetherimide (PEI) nanofibers wrapped with multi-walled carbon nanotubes (MWNTs)). The support layer acts as a chemical trap that can capture heavy metal ions dissolved in liquid electrolytes and the thin top layer serves as an upper current collector of cathodes to facilitate redox reaction kinetics. Notably, the unusual porous structure (specifically, preferential deposition of the MWNTs along the PEI nanofibers) of the top layer is theoretically elucidated using molecular dynamics simulation. As a consequence, the Janus separator enables significant improvements in the fast-rate charge/discharge reaction of lithium-ion batteries and also hightemperature cycling performance, which lie far beyond those achievable with conventional polyethylene separators. The Janus separator featuring such exceptional multifunctionality is envisioned to open a new membrane solution for high-energy/high-performance lithium-ion batteries that will power forthcoming smart ubiquitous era.
The roles of leukocyte cell-derived chemotaxin 2 (LECT2) in hepatocellular carcinoma invasion and angiogenesis

1080 Hepatocellular carcinoma (HCC) is the fifth commonest cancer worldwide and the second leading fatal cancer in Southeast Asia. The five year survival rate for HCC patients is only about 40% to 50%, and the major poor prognostic factors include vascular invasion and large tumor size. Using high throughput technology suppression subtractive hybridization (SSH) and oligonucleotide microarray of human membrane/secreted proteins (TMSEC microarray), we found that LECT2, is a 16-kDa protein that consists of 133 amino acids and three intramolecular disulfide bonds, was associated with less vascular invasion in HCC patients. Univariate analysis of LECT2 mRNA level and various risk factors in 127 HCC patients showed that LECT2 was highly correlated with overall survival and smaller tumor size. LECT2 overexpression did not influence hepatoma cells growth property, but strongly reduced tumorigenesis in subcutaneous xenograft model in vivo . Immunohistochemical staining revealed that tumors from LECT2-transfectant displayed less vascualrization as compared to vector control tumors. In addition, we purified LECT2-Fc recombinant proteins, and found that rhLECT2 could strongly and directly inhibit migration, invasion, and angiogenesis in vitro and in vivo . In conclusion, we first established that LECT2 is a promising prognostic molecular marker and could be a potential therapeutic protein drug for HCC invasion and angiogenesis.
An ultrastructural study of the asci and banded ascospores of Fasciatispora petrakii

Ascospores of Fasciatispora petrakii are brown and unicellular and are provided with pallid central bands with unknown function. Ascospores were examined at the electron microscopic level in order to establish their fine structure. The bands are narrow regions of the ascospore wall with less pigmentation. They may act as areas of weakness through which spores can germinate. Ascospores are surrounded by a mucilaginous sheath, which is also illustrated at ultrastructural level. The asci are similar to those found in species of Xylaria (Xylariaceae) and placement of Fasciatispora in the Xylariaceae is considered most appropriate.
Nesting Ecology of Yellow Warblers (Dendroica petechia) in Montane Chaparral Habitat in the Northern Sierra Nevada

ABSTRACT. The Yellow Warbler (Dendroica petechia) is considered a riparian specialist in much of western North America, but in California it also breeds in a second habitat type: montane chaparral of the Sierra Nevada and southern Cascades. We monitored Yellow Warbler nests in montane chaparral and assessed their poorly known nesting ecology in this habitat. We also conducted point counts in upland habitat throughout the region. We determined habitat associations for Yellow Warblers based on nest site and point-count vegetation data; nests were predominantly in bush chinquapin (Chrysolepis sempervirens) and greenleaf manzanita (Arctostaphylos patula), and point-count abundance was most strongly associated with high overall shrub cover. The importance of montane chaparral for a number of shrub-dependent Sierran birds is well documented, yet the chaparral is threatened by various practices including fire suppression, closed-canopy-focused forest management, and understory fuels-reduction treatments. Although Yellow Warblers are far more abundant in wet mountain meadow riparian habitat in the region, we recommend that management of montane chaparral habitat consider this species and the requirements of other shrub-nesting birds.
Host-Parasitoid Model With Intraspecific Competitions

In this paper a discrete-time host-parasitoid model with intraspecific competitions is proposed. Phase portraits are drawn for different types of intraspecific competitions to notice the effects of intraspecific competitions for biologically reasonable range of parameter values. Bifurcation analysis is done with respect to instantaneous search rate as well as handling time for different types of intraspecific competitions. Many forms of complex dynamics such as chaos, periodic windows etc. are observed. The stable coexistence as well as oscillatory coexistence of host and parasitoid are shown under different types of intraspecific competitions. The Hopf point and attractor crises exist for different intraspecific competitions.
Thermal conductivities estimation in orthotropic materials making use of global optimization algorithms

Existen situaciones en donde se requiere el conocimiento de propiedades termodinamicas como la conductividad termica para el presente caso. En algunas de ellas aparece una exigencia adicional, al tener que hacerse la medicion a lo largo de los tres ejes espaciales perpendiculares. En el presente articulo, se propone predecir estas tres conductividades termicas que aparecen en materiales ortotropicos, mediante la solucion de un problema inverso de transferencia de calor. El problema inverso se resolvio mediante el algoritmo Cuckoo, el deterministico de Levenberg-Marquardt, y con el nuevo hibrido entre estos dos. Se encontro que estas tres estrategias producen excelentes resultados al compararse entre ellas. Sin embargo, el algoritmo hibrido resulto ser mas eficiente que sus precursores al resolver el presente problema. El algoritmo hibrido consumio en promedio menos tiempo de computo en comparacion con el algoritmo metaheuristico y amplio el rango de busqueda en comparacion con el deterministico, manteniendo siempre precision en sus resultados.
Individual and School Influences on Interdependence

This Conference Paper is brought to you for free and open access by the Research Conferences at ACEReSearch. It has been accepted for inclusion in2004 - Supporting Student Wellbeing: what does the research tell us about social and emotional development of young people? by an authorizedadministrator of ACEReSearch. For more information, please contact mcdowell@acer.edu. au.