Miracle-dz/UniFAR-FTUs huggingface dataset:
Campus information systems for students: classification in Spain

Purpose – First, this article seeks to establish a conceptual model for campus information systems for students, in order to make their comparison possible for strategic management purposes. Second, it seeks to test this conceptual model in a fieldwork on Spanish higher education institutions, in order to relate information system's characteristics with other organizational features.Design/methodology/approach – The conceptual model was based on socio‐technical information systems and knowledge management literature. A holistic vision of higher education student's information needs was kept into account. Data about Spanish universities were gathered by means of structured visits to institutional websites and structured interviews with undergraduate students. Data were analyzed with multivariate statistical techniques.Findings – From multivariate analysis, a classification was obtained for Spanish universities into three clusters with homogeneous characteristics, in the sense of informational and organizat.
TRILOBITE BIOFACIES ALONG AN ORDOVICIAN (SANDBIAN) CARBONATE BUILDUP TO BASIN GRADIENT, SOUTHWESTERN VIRGINIA

ABSTRACT The Upper Ordovician Effna, Botetourt, and Liberty Hall limestones of Virginia record deposition in several paleoenvironments along a carbonate ramp during the early history of the Taconic Foreland Basin. Four distinct lithofacies are present, i.e., biohermal mudstone and wackestone, biostromal grainstone, nodular deep-flank limestone and shale, and basinal mudstones and shale, and each of these is associated with different trilobite biofacies. Cluster analysis and ordination define biofacies, and characterize gradients and patterns within the trilobite relative abundance data. Biofacies are clearly delineated along a depth gradient, with gradational compositional changes between associations. The moderate-diversity bioherm biofacies is dominated by illaenids (Illaenus, Bumastoides) and cheirurids (Sphaerexochus). The high-diversity biostromal biofacies is also an illaenid-cheirurid association, but is proportionally enriched in cheirurids, and includes off-bank elements not common in the bioherm. The high-diversity deep-flank facies is associated with an Ampyx-Isotelus-Nileus assemblage that gradationally replaces the biostromal biofacies. The deep flank gives way to a low-diversity Isotelus-Calyptaulax-Raymondaspis association of cosmopolitan trilobites in the outer slope and basin environment. These biofacies characterize local environments in the Taconic Foreland Basin just prior to, and in the initial phases of tectonically driven oceanographic change that led to regional extirpation of the buildup fauna and the reorganization of deep-water trilobite biofacies. New associations of taxa not found elsewhere in Laurentia are common within the foreland basin, suggesting that the archetypal biofacies described here are reorganized with the onset of regional environmental change.
Progress on Lead Photocathodes for Superconducting Injectors

We present the results of our investigation of bulk lead, along with various types of lead films, as suitable photocathode materials for superconducting RF injectors. The quantum efficiency of each sample is presented as a function of the photon energy of the incident light, from 3.9 eV to 6.5 eV. Quantum efficiencies of 0.5% have been obtained. Production of a niobium cavity with a lead-plated cathode is underway.
Shoreface Sand Supply to Beaches

The possibility of sand supply from the shoreface to beaches was evaluated based on a variety of methods involving field data and modeling results obtained from five coasts on three continents representing a wide range of coastal environments. The field data include wave-current measurements, historical seabed soundings and geological surveys. Cross-shore transport estimates from modeling on the annual time scale were compared against scaled-down inferences from the seabed-change and geological data. The results are all consistent with there being net onshore transport over the long term from the lower shoreface to beaches in each of the environments. These environments typify settings that occur commonly (probably predominantly) along the world's coasts. So net shoreface sand supply to beaches may be a widespread and common but little appreciated factor in coastal stability. The effect of this net supply is to offset other factors causing shoreline recession, such as positive gradients in littoral transport Moreover, shoreline progradation occurs if sand supply from the shoreface dominates over littoral sediment losses. Implications are clearly significant for coastal engineering and coastal management, despite the processes not being immediately apparent: long-term shoreface sand supply to beaches is masked by more rapid cyclical changes. Rates of shoreface sand supply to beaches indicated from various lines of evidence are typically on the order of 10 0 m 3 a –1 per meter of shoreline. This volume corresponds to a lowering of the shoreface by only a few grain diameters per year.
Promote social distancing and prevent panic buying during the epidemic of COVID-19: The contributions of people’s psychological and behavioural factors

Objectives COVID-19 disease has progressed to the level of a global pandemic. This study aimed to investigate people’s psychological and behavioural responses to the COVID-19 epidemic and explore the predictors for social distancing and panic buying.Methods A 17-item questionnaire was developed and distributed randomly to people using social media. Descriptive statistics and one-way ANOVA were used to assess people’s psychological and behavioural responses. Hierarchical regression was conducted to investigate the predictive effects of psychological and behavioural variables on reports of social distancing and panic buying, respectively.Results Respondents reported a low degree of risk perception and risk beliefs towards being outside and had moderate psychological stress and positive guarding behaviours for being outside. Respondents reported high concern regarding COVID-19 and tended to keep social distancing during the epidemic. They would panic-purchase food and supplies. In addition, psychological stress emerged as a very strong predictor for reporting COVID-19 concerns and panic buying. Furthermore, reported concerns of COVID-19 information sharing had a significant predictive influence on panic buying of food. Guarding behaviours for being outside had a significant predictive effect on respondents reported social distancing of cancelling outings. Reported concerns of COVID-19 were stronger predictors for reported social distancing.Conclusion It is important to relieve people’s psychological stress and reduce information sharing to control panic buying. In addition, we should promote adoption of guarding behaviours for being outside and increase the concerns of COVID-19 to encourage people keep social distancing. Measures should be implemented according to the characteristics of the population.
Vulnerable Growth

We study the conditional distribution of GDP growth as a function of economic and financial conditions. Deteriorating financial conditions are associated with an increase in the conditional volatility and a decline in the conditional mean of GDP growth, leading the lower quantiles of GDP growth to vary with financial conditions and the upper quantiles to be stable over time. Upside risks to GDP growth are low in most periods while downside risks increase as financial conditions become tighter. We argue that amplification mechanisms in the financial sector generate the observed growth vulnerability dynamics. (JEL C53, E23, E27, E32, E44)
Biomass and carbon stock assessment in the sub-tropical Forests of Manipur, North-East India.

The study was undertaken to assess biomass and carbon stock in threesub-tropical forest ecosystems in Churachandpur district of Manipur, NE India located at 93 15' to 94 00' E longitude and 2400' to 24 30' N latitude with an elevation ranging from 900 m to 1100 m abovemean sea level. Forest sites I and II wasdominated by Phoebe hainesiana and Gmelina arborea whereas siteIII by Schima wallichii and Ficus cunia. Aboveground biomass was calculatedusing allometric regression model and aboveground carbon stock was determinedconsidering 48% of carbon in the total aboveground biomass. All the forestsites exhibited high tree density in 10-15cm diameter class (sapling stage) anddecreased in subsequent diameter classes. Carbon stock was recorded to behighest in 10-15 cm diameter class and declined with the increase of diameterclasses in all the forest sites owing to high density of tree species in thelower diameter classes. Small trees (10-20cm diameter class) contributed 80 to87% of total carbon stock across the forest sites. The carbon stock wasestimated to be minimum in site-III (81.17 Mg C ha-1) dominated by Schimawallichii - Ficus cunia and minimum in site-I (118.24 Mg C ha-1)dominated by Phoebe hainesiana - Gmelina arborea.Thus, Phoebe hainesiana - Gmelina arborea community dominatedforests will play important role in carbon sequestration in high altitudesub-tropical forest of Manipur, North EastIndia.
Estimating body mass of fossil rodents

Reconstructing the body mass of a fossil animal is an essential step toward understanding its palaeoecological role. Length × width (L×W) of the first lower molar (m1) is frequently used as a proxy for body mass in fossil mammals. However, among rodents, Muroidea have no premolar and an elongated m1, whereas other groups have a premolar and a m1 that is not elongated. This leads to an overestimation of body mass in muroids and/or an underestimation in other rodents. To solve this problem we assembled data of upper and lower tooth row length and body mass in extant rodents, and calculated regression equations for all rodents, rodents with premolars, rodents without premolars and for taxonomic groups at superfamily or family level. Data for complete tooth rows in fossil rodents are scarce, so we took the sum of the lengths of the (three or four) cheek teeth as an approximation of tooth row length. We estimate body mass of the fossil rodents, using the regression equations of the extant taxa.
Macroeconomic Uncertainty and Expected Stock Returns

This paper introduces a broad index of macroeconomic uncertainty based on ex-ante measures of cross-sectional dispersion in economic forecasts by the Survey of Professional Forecasters. We estimate individual stock exposure to a newly proposed measure of economic uncertainty index and find that the resulting uncertainty beta predicts a significant proportion of the cross-sectional dispersion in stock returns. After controlling for a large set of stock characteristics and risk factors, we find the predicted negative relation between uncertainty beta and future stock returns remains economically and statistically significant. The significantly negative uncertainty premium is robust to alternative measures of uncertainty index and distinct from the negative market volatility risk premium identified by earlier studies. This draft: December 2014 JEL classification: G11, G12, C13, E20, E30.
Surface modi cation of biomaterial embedded with pits using die sinker machine

a. Department of Thermo-Fluids, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia. b. Department of Mechanical Engineering, Politeknik Tuanku Sultanah Bahiyah, 09000 Kulim, Kedah, Malaysia. c. Department of Biotechnology and Medical Engineering, Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia. d. Institute of Chemical and Bioengineering Technology, Universiti Kuala Lumpur-, Melaka, Malaysia.
MUDFLOW OF 1941 AT WRIGHTWOOD, SOUTHERN CALIFORNIA

During early May of 1941 the southern California mountain resort of Wrightwood was partly inundated by surging flows of muddy debris which occurred daily for more than a week. The immediate cause of flowage was rapid melting of deep winter snow. Intense shattering and rapid weathering of the bedrock (Pelona schist) within the San Andreas rift zone at this location contributed materially to preparing debris for flowage. Field studies, eyewitness accounts, and movie films provide the following information. Debris was transported 15 miles by the mudflow, and on a gradient as low as 75 feet per mile at the outer extremity. The flow advanced in successive waves or surges of “slimy gray cement-like” mud containing abundant stones. Velocities of the surge fronts ranged from a few to nearly 15 feet per second and averaged close to 10 feet per second during the more fluid phases. The fronts of the more fluid surges slithered and splashed along about like a rapidly advancing tongue of water. No breaker-like motion was evident, although the top of the front tended to shoot ahead of the base. In more viscous surges a bouldery embankment developed at the front and was shoved along by the material following behind. One sample of the fluid debris had a density of 2.4, indicating a water content of 25–30 per cent by weight. Calculated viscosities range from 2 × 10^3 to 6 × 10^3 poises. An average sorting coefficient of 3.94 indicates poor sorting, although somewhat better than in many glacial tills which the flow deposits strongly resemble. Earlier mudflows have occurred here, and others will undoubtedly take place in the future.
Melting and multi-stage metasomatism in the mantle wedge beneath a frontal arc inferred from highly depleted peridotite xenoliths from the Avacha volcano, southern Kamchatka

Peridotite xenoliths from the Avacha volcano, Kamchatka, derived from the mantle beneath the volcanic front of the Kamchatka arc, are mainly highly depleted clinopyroxene-poor harzburgites with highly forsteritic olivine (Fo 90^92) and high Cr-number spinel (0 5^0 7). The Avacha peridotites have experienced metasomatism to various extents, with the formation of metasomatic orthopyroxene replacing primary olivine, by infiltration of SiO2-rich fluids. The metasomatic orthopyroxenes can be subdivided into two textural types; (1) radially aggregated prismatic grains (opx II-1); (2) stout grains associated with interstitial glass and metasomatic minerals (opx II-2). The Avacha peridotites exhibit light rare earth element (LREE) enrichment relative to heavy REE (HREE), even in primary lithologies with52 vol.% of metasomatic orthopyroxene. However, the metasomatism has not altered the chemical characteristics of the Avacha peridotites significantly, and the Fo contents of olivine do not increase with an increase in the Cr-number of spinel. The clinopyroxene in the most depleted primary peridotite, with the highest spinel Cr-number, has the highest CeN (where subscript N indicates normalized to primitive mantle) and relatively lowYbN contents.We conclude that the Avacha peridotites are residues of high-degree melting induced by infiltration of an aqueous fluid with relatively high Fe/Mg and LREE/HREE ratios. In situ analysis of olivine grain boundaries by laser-ablation inductively coupled plasma mass spectrometry (ICP-MS) showed significant concentrations of some trace elements (Ce and Ba), even on glassfree boundaries; such grain boundaries can be a repository for largeion lithophile elements (LILE). Orthopyroxene and Ca-amphibole contribute to the HREE and middle REE (MREE) budget, respectively, of the bulk peridotites.Three types of mantle metasomatism are recorded in the Avacha peridotites. The agent that formed HREE-poor opx II-1 was a slab-derived aqueous fluid rich in SiO2. It was a successor of the fluid influx involved in the initial partial melting event. On the other hand, the metasomatic minerals in highly metasomatized peridotites have high LILE (Th, U and Sr) and LREE contents relative to HREE, indicating involvement of a hydrous melt of adakitic affinity derived from the subducted slab. Glasses associated with opx II-2 are similar in their trace-element characteristics to the host Avacha volcanic rocks, indicating the likelihood that the metasomatic agent was a forerunner of the recent Avacha arc magmatism.
Does intermediate spreading-rate oceanic crust result from episodic transition between magmatic and 1 magma-dominated , faulting-enhanced spreading ? – the Costa Rica Rift example 2 3

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Boolean algebras of projections of finite multiplicity.

Introduction, The multiplicity theory in Banach spaces has been developed recently by Dieudonne [2] and Bade [1]. In [6] we studied the algebra of bounded operators, in a given Hubert space, that commute with all projections of a given Boolean algebra of self adjoint projections. By using Bade's paper [1], we propose to generalize these results to Banach spaces. The notation of [1] will be used. Let X be a complex Banach space. Let the Boolean algebra of projections be given as follows: On the compact Hausdorff space Ω, let a measure E(-) be defined for every Borel set, such that: 1. For every Borel set α, E(a) is a projection on X. 2. For every xeX, the vector valued set function E( )x is countable additive. 3. If a and β are Borel sets then
Multipoint Observations of the Dynamics at an ICME Sheath–Ejecta Boundary

The radial evolution of interplanetary coronal mass ejections (ICMEs) is dependent on their interaction with the ambient medium, which causes ICME erosion and affects their geoefficiency. Here, an ICME front boundary, which separates the confined ejecta from the mixed, interacted sheath–ejecta plasma upstream, is analyzed in a multipoint study examining the ICME at 1 au on 2020 April 20. A bifurcated current sheet, highly filamented currents, and a two-sided jet were observed at the boundary. The two-sided jet, which was recorded for the first time for a magnetic shear angle <40°, implies multiple (patchy) reconnection sites associated with the ICME erosion. The reconnection exhaust exhibited fine structure, including multistep magnetic field rotation and localized structures that were measured only by separate Cluster spacecraft with the mission inter-spacecraft separation of 0.4–1.6 R E. The mixed plasma upstream of the boundary with a precursor at 0.8 au lacked coherency at 1 au and exhibited substantial variations of southward magnetic fields over radial (transverse) distances of 41–237 R E (114 R E). This incoherence demonstrates the need for continuous (sub)second-resolution plasma and field measurements at multiple locations in the solar wind to adequately address the spatiotemporal structure of ICMEs and to produce accurate space weather predictions.
The Promise of Restorative Practices to Transform Teacher-Student Relationships and Achieve Equity in School Discipline

ABSTRACT Restorative approaches to school discipline are increasingly being implemented throughout the United States in an attempt to reduce reliance on suspension and eradicate the racial discipline gap. Yet, little is known about the experience of students in classrooms utilizing restorative practices (RP). This study draws on student surveys (N = 412) in 29 high school classrooms. Hierarchical linear modeling and regression analyses show that high RP-implementing teachers had more positive relationships with their diverse students. Students perceived them as more respectful and they issued fewer exclusionary discipline referrals compared with low RP implementers. In addition, the findings demonstrate some initial promise of well-implemented RP for narrowing the racial discipline gap. The study found that higher RP implementers issued fewer discipline referrals to Latino and African American students compared with lower RP implementers. The study findings have implications for equity-focused consultation in schools that honor student experience of new programming.
Coverage and Generalization in an Artificial Immune System

LISYS is an artificial immune system framework which is specialized for the problem of network intrusion detection. LISYS learns to detect abnormal packets by observing normal network traffic. Because LISYS sees only a partial sample of normal traffic, it must generalize from its observations in order to characterize normal behavior correctly. A variation of the r-contiguous bits matching rule is introduced, and its effect on coverage and generalization is studied. The effect of representation diversity on coverage and generalization is also explored by studying permutations in the order of bits in the representation.
ELLIOTHERIUM KERSTENI, A NEW TRITHELEDONTID FROM THE LOWER ELLIOT FORMATION (UPPER TRIASSIC) OF SOUTH AFRICA

Abstract We describe a new tritheledontid, Elliotherium kersteni n. gen. and sp. , on the basis of a partial skull collected from the lower Elliot Formation (Upper Triassic; Euskelosaurus Range Zone) on the farm Beatrix, Free State Province, South Africa. Although similar to Pachygenelus, the genus differs from other South African tritheledontids in its higher maxillary postcanine tooth count, lack of labial cingula on the upper postcanine teeth, shorter secondary palate, retention of a median vomerine ridge behind the secondary palate, and smaller interpterygoid vacuity. With regard to these features, Elliotherium is most similar to the South American tritheledontid Chaliminia. Elliotherium is autapomorphic in its possession of a long parasphenoid rostrum, ventrally depressed secondary palate, medially convex margins of the interpterygoid vacuity, and a thin lamina of palatine covering the interpterygoid vacuity. Although Elliotherium is the stratigraphically lowest positioned tritheledontid from southern Africa, it is still probably later occurring than the South American taxa Chaliminia or Riograndia. Based on a revision of a previous analysis of advanced cynodont relationships, we propose a sister-group relationship between Elliotherium and Chaliminia, although support for this pairing is weak.
Existence and regularity results for some Fully Non Linear singular or degenerate equation

In this article we prove existence, uniqueness and regularity for the singular equation \begin{eqnarray*}%\label{eqfln} \begin{cases} |\nabla u|^{\alpha}(F(D^{2}u)+h(x)\cdot\nabla u)+c(x)|u|^{\alpha}u+p(x)u^{-\gamma}=0\mbox{\ \ in } \ \Omega\\ u>0\ \mbox{\ \ in}\ \Omega ,\mbox{\ \ } u=0\mbox{\ \ \ \ on} \ \partial\Omega \end{cases} \end{eqnarray*} when $p$ is some continuous and positive function, $c$ and $h$ are continuous, $\alpha > -1$ and $F$ is Fully non linear elliptic. Some conditions on the first eigenvalue for the operator $|\nabla u|^{\alpha}(F(D^{2}u)+h(x)\cdot\nabla u)+c(x)|u|^{\alpha}u$ are required. The results generalizes the well known results of Lazer and Mac Kenna.