Miracle-dz/UniFAR-FTUs huggingface dataset:
Visualisation of the Dynamics of Computer-mediated Community Networks

In this paper we will demonstrate the potential of processing and visualising the dynamics of computer-mediated communities by means of Social Network Analysis. According to the fact that computer-mediated community systems are manifested also as structured data, we use data structures like e-mail, discussion boards, and bibliography sources for an automatic transformation into social network data formats. Currently our developed converter DMD (Data Multiplexer Demultiplexer) supports GraphML, UCINET, and Pajek formats besides our own data formats which are used for real-time analysis of CSCL (Computer Supported Collaborative Learning) activities. In the case of communication data our converters utilize conversation graphs reflecting aspects of speech act and conversational theory to produce directed graphs in the cases where one-mode person networks are desired. The paper will demonstrate a 3-dimensional visualisation of an author community based on Bibtex bibliography data converted into GraphML. Based on this dataset we visualise publications network with a tool called Weaver, which is developed in our research group. According to Lothar Krempel’s algorithm, Weaver uses the first two dimensions to embed the network structure within a common solution space. The third dimension is used for representing the time axis and thus the dynamics of co-authorship relations. Concluding we aim to discuss potential issues and problems of our approach and the possibilities especially concerning the appropriate visualisation and segmentation of long term communications, such as mailing lists.
A projection method for the solution of rectangular systems

We present a general method for the linear least-squares solution of overdetermined and underdetermined systems. The method is particularly efficient when the coefficient matrix is quasi-square, that is when the number of rows and number of columns is almost the same. The numerical methods proposed in the literature for linear least-squares problems and minimum-norm solutions do not generally take account of th is special characteristic. The proposed method is based on an LU factorization of the original quasi-square matrix A, assuming that A has full rank. In the overdetermined me, the LU factors are used to compute a basis for the null space of AT. The right-hand side vector b is then projected onto this subspace and the least-squares solution is obtained fiom the solution of this reduced problem. In the caae of underdetermined systems, the desired solution is q a i n obtained through the solution of a reduced system. The use of this method may lead to important savings in computational time for both dense and sparse matrices. Some practical examples that illustrate the use of the method are included.
Functional Mapping of an Oligomeric Autotransporter Adhesin of Aggregatibacter actinomycetemcomitans

ABSTRACT Extracellular matrix protein adhesin A (EmaA) is a 202-kDa nonfimbrial adhesin, which mediates the adhesion of the oral pathogen Aggregatibacter actinomycetemcomitans to collagen. EmaA oligomers form surface antenna-like protrusions consisting of a long helical rod with an ellipsoidal ending. The functional analysis of in-frame emaA deletion mutants has located the collagen binding activity to the amino terminus of the protein corresponding to amino acids 70 to 386. The level of collagen binding of this deletion mutant was comparable to the emaA mutant strain. Transmission electron microscopy studies indicate that the first 330 amino acids of the mature protein form the ellipsoidal ending of the EmaA protrusions, where the activity resides. Amino acid substitution analysis within this sequence has identified a critical amino acid, which is essential for the formation of the ellipsoidal ending and for collagen binding activity.
Approximate surface reconstruction and registration for RGB-D SLAM

RGB-D cameras have attracted much attention in the fields of robotics and computer vision, especially for object modeling and environment mapping. A key problem in all these applications is the registration of sequences of RGB-D images. In this paper, we present an efficient yet reliable approach to align pairs and sequences of RGB-D images that makes use of local surface information. We extend previous works on 3D mapping with micro aerial vehicles to sequences of RGB-D images. The resulting alignment is based on a robust surface-to-surface error metric and uses multiple surface-to-surface patch matches between pairs of RGB-D images. Quantitative evaluations show that our approach is competitive with state-of-the-art approaches.
The lesson from the Iberia-Newfoundland rifted margins: how applicable is it to other rifted margins?

The Iberia-Newfoundland rifted margins represent a unique data set to study the structure and processes related to rifting and continental breakup in magma-poor rifted margins. The major observations made along these margins show that: 1) rifting is polyphase and deformation localizes and migrates towards the area of final breakup, 2) the mantle consists of inherited, infiltrated and depleted domains, and 3) magmatism includes infiltration, underplating, diking and extrusion of MOR and alkaline magmas before, during and after continental breakup. This complex polyphase evolution is recorded in the migration of syn-tectonic sedimentary sequences and a subsidence history, which is yet little understood. These observations enable us to propose and test new models for the formation of deep-water rifted margins and continental break-up. A key question is to what extend the observations and models derived from the Iberia-Newfoundland rifted margins can be compared with less explored rift systems.
Evaluating a rugby sport intervention programme for young offenders

Purpose – Interventions intended to aid offender re-entry, rehabilitation and desistence based around specific sports and championed by sporting institutions have been introduced in custodial settings. Though research evaluating these is positive (Meek, 2012), conclusions are often hampered by the absence of control groups in such work. The purpose of this paper is to evaluate the Saracens “Get Onside” rugby-based intervention at HMP YOI Feltham, while employing a non-randomised control group. Design/methodology/approach – In total, 24 young offenders took part. Those in the treatment condition experienced a ten-week course which included a range of activities leading to accredited awards, exercises in functional skills in literacy/numeracy and 72 hours of rugby sessions. Those in the control condition were matched on key static factors, crime attitudes and aggression. Self-reported measures of pro-crime attitudes, aggression, self-esteem, and impulsivity were taken once before the start, once during, and.
Hurricanes and climate in the Caribbean during the past 3700 years BP

A multiproxy analysis of lacustrine sediments cored in Grand-Case Pond at Saint-Martin, north of the Lesser Antilles archipelago, reveals three distinct climatic periods for the last 3700 years. From 3700 to ~2500 yr cal. BP and from 1150 yr cal. BP to the present, carbonate mud deposition occurred in connection with pond lowstands. These periods were also punctuated by severe drought events, marked by gypsum laminae, and hurricane landfalls, leading to marine sand inputs into the pond. The intermediate time interval, from 2500 to 1150 yr cal. BP, is typified by black organic mud deposition, suggesting that hypoxic to anoxic conditions prevailed at the pond bottom. These were probably linked with a perennial pond highstand and reflect more uniform and wetter climatic conditions than today. The carbon isotopic composition of the ostracod Perissocytheridea bisulcata shows that the lowest δ13C values are recorded during the hypoxic periods, as a consequence of bacterial recycling of isotopically depleted organic matter. Such a climatic history agrees closely with that documented from other records in the Caribbean area, such as the Cariaco Basin, central coast of Belize or Barbados. By constrast, discrepancies seem to emerge from the comparison between hurricane activity recorded at Saint-Martin on the one hand and Vieques (Puerto Rico) on the other hand. We explain this apparent contradiction by a balance between two distinct storm paths in response to latitudinal shifts of the Intertropical Convergence Zone (ITCZ). Stronger storm activity over the Gulf coast and the inner Caribbean Sea is favoured by a southern position of the ITCZ in connection with dry climatic conditions. Plausible links with the North Atlantic Oscillation (NAO) are also suggested.
DroidOLytics: Robust Feature Signature for Repackaged Android Apps on Official and Third Party Android Markets

Popularity of Android smart phone has led to exponential increase of sophisticated malware threats prompting the academia research, security researchers and Anti Virus (AV) industry to look for smart detection methods to protect user against malware app threat. Statistical signature methods play a vital role to stop the malware authors spreading malicious content through apps. In this research, we present DroidOLytics, a statistical signature approach that creates improbable feature signature to detect unseen malicious apps from third party and official android market. Statistical signature is robust against repackaged and code obfuscated malware, popular app obfuscation techniques. DroidOLytics is a syntactic approach that finds regions of statistical similarity with known malware to detect variants of known malware families.
Effect of method of cell isolation on the metabolic activity of isolated rat liver cells.

Rat liver cells isolated with a tissue press, by tetraphenylboron (TPB) chelation, or by hyaluronidase and collagenase digestion were compared as to morphology, cell yield, and biosynthetic activity. The cells were intact by light microscopy; ultrastructural changes were present on electron-microscopic examination of all cell types except those prepared by a modified enzyme incubation method. TPB chelation gave the largest and enzyme techniques the smallest yield of cells. All cell types incorporated labelled amino acids into cellular protein; however, amino acid incorporation was greatest in cells isolated by the revised enzyme technique. Only enzyme and mechanical cells incorporated acetate into cellular lipid. Cofactor supplementation was not required in the modified enzyme cells. Acetate incorporation was more sensitive to preincubation than was amino acid incorporation. Calcium, which was required to prevent aggregation of enzyme cells, inhibited amino acid incorporation moderately and acetate incorporation completely in mechanical cells.
Reduction of the two-body dynamics to a one-body description in classical electrodynamics

We discuss the mapping of the conservative part of two-body electrodynamics onto that of a test charged particle moving in some external electromagnetic field, taking into account recoil effects and relativistic corrections up to second post-Coulombian order. Unlike the results recently obtained in general relativity, we find that in classical electrodynamics it is not possible to implement the matching without introducing external parameters in the effective electromagnetic field. Relaxing the assumption that the effective test particle moves in a flat spacetime provides a feasible way out.
Integrating system descriptions by clocked guarded actions

For the description of reactive systems, there is a large number of languages and formalisms, and depending on a particular application or design phase, one of them may be better suited than another one. In the design of reactive systems, their integration is a key issue for a system-wide simulation, analysis and verification. In this paper, we propose clocked guarded actions as a unified intermediate representation for several synchronous and asynchronous models in the design flow, which does not only provide an integrated description but it also allows designers to share common components of the tool infrastructure. Furthermore, we sketch how various models can be translated to this intermediate format, and how the intermediate format can be used for verification (by symbolic model checking) and integrated simulation (by SystemC).
A PRESSURE-DEPENDENT CORRECTION FOR DISPLACEMENT RESULTS FROM 1 G MODEL TESTS WITH SAND

For 1g model tests in sand a pressure-dependent correction for the displacements of rigid foundations in service states is proposed on the basis of a similarity analysis. The theoretical treatment includes a square foundation with a vertical load and a vertical pile with a horizontal load. The theory is checked and confirmed by triaxial tests and model tests using shallow foundations. Scaling rules are derived that confirm equations proposed by Terzaghi and Bjerrum. As a practical application a load-settlement formula for a single shallow foundation is proposed which includes the influence of the foundation size, its shape and bedding depth and the soil density. The Authors show how the soil parameters may be determined from plate loading tests. On propose pour des essais a echelle reduite sans centrifugeuse avec du sable une correction, basee sur une analyse de la similitude, pour le calcul du deplacement des fondations rigides. Le calcul theorique comprend une semelle carree chargee verticalement et un .
Sensitivity analyses of crop yields and changes in climate variables simulated with iGAEZ

The objective of this study is to evaluate the influence that minimum temperature, average temperature, and maximum temperature have on yield when using the iGAEZ model. Simulated yields on each grid cell for 1980–1999, in three leading producers of wheat, rice and maize, were combined with climate datasets to evaluate the relationships between temperature and simulated crop yields. A generalized additive model was evaluated to analyse changes in diurnal temperature range (DTR) and crop yields. Results differ depending on crop and region as to whether there was a clear positive/negative response of yields to daily temperature indices (DTIs) (including DTR, Tmax, Tmin and Tave). However, the effects of DTIs were statistically significant using a generalized additive model for all crops and regions. To evaluate whether future changes in DTIs are relevant for impact assessment, yield responses to projected changes in DTIs by 2080–2099, from 19 climate models under SRES A2, B1 scenarios, were estimated. Among DTIs, DTR changes did significantly affect yield responses in several cases, such as in maize and rice yields in South Asia under B1 scenario. The decreasing/increasing trend of DTIs has an important implication for estimating the future impact of climate changes. Copyright © 2012 John Wiley & Sons, Ltd.
Development and calibration of the Airborne Three-Line Scanner (TLS) imaging system

for a large number of ground control points (GCP) for georeferThe Airborne Three-Line-Scanner (TLS) imaging system has encing the imagery. These developments offer new possibilities provided proof of the concept of stereo and multispectral for the production such as digital surface/terrain models, mapping using the pushbroom mode because frame digital orthoimages, and classification maps (Fritsch and Stallmann, imaging systems with comparable coverage and resolution 2000). have not been available and are not likely to be available in On the other hand, progress in the development of airborne the future. A prototype of the TLS system, the STARIMAGER, was linear imaging systems has been made in the last decades. developed jointly in 2000 by the STARLABO Corporation of These sensors can provide higher resolution and repeated temJapan and the University of Tokyo and is introduced in this poral panchromatic, multispectral, and hyperspectral image paper. A laboratory method and algorithm to evaluate the data for mapping and GIS applications (Tempelmann et al., optical characteristics of STARIMAGER are presented. The 2000). The Digital Photogrammetry Assembly (DPA) was finprinciple is to measure the object-space angles of a sufficient ished and tested in 1995 by the Institute of Photogrammetry, number of CCD elements in two directions as seen through the University of Stuttgart to produce 1:25,000- and 1:50,000-scale optics. These angular measurements reflect the real camera maps, and to automatically generate a DTM to accuracies of betgeometry of both the optics and the CCD arrays. A mathe- ter than 3 m (Hahn et al., 1996). The ADS40 airborne digital matical model based on the central perspective projection has sensor, developed in 2000 by LH Systems, has been tested in
Effects of massage on delayed-onset muscle soreness, swelling, and recovery of muscle function.

CONTEXT Delayed-onset muscle soreness (DOMS) describes muscle pain and tenderness that typically develop several hours postexercise and consist of predominantly eccentric muscle actions, especially if the exercise is unfamiliar. Although DOMS is likely a symptom of eccentric-exercise-induced muscle damage, it does not necessarily reflect muscle damage. Some prophylactic or therapeutic modalities may be effective only for alleviating DOMS, whereas others may enhance recovery of muscle function without affecting DOMS. OBJECTIVE To test the hypothesis that massage applied after eccentric exercise would effectively alleviate DOMS without affecting muscle function. DESIGN We used an arm-to-arm comparison model with 2 independent variables (control and massage) and 6 dependent variables (maximal isometric and isokinetic voluntary strength, range of motion, upper arm circumference, plasma creatine kinase activity, and muscle soreness). A 2-way repeated-measures analysis of variance and paired t tests were used to examine differences in changes of the dependent variable over time (before, immediately and 30 minutes after exercise, and 1, 2, 3, 4, 7, 10, and 14 days postexercise) between control and massage conditions. SETTING University laboratory. PATIENTS OR OTHER PARTICIPANTS Ten healthy subjects (5 men and 5 women) with no history of upper arm injury and no experience in resistance training. INTERVENTION(S) Subjects performed 10 sets of 6 maximal isokinetic (90 degrees x s(-1)) eccentric actions of the elbow flexors with each arm on a dynamometer, separated by 2 weeks. One arm received 10 minutes of massage 3 hours after eccentric exercise; the contralateral arm received no treatment. MAIN OUTCOME MEASURE(S) Maximal voluntary isometric and isokinetic elbow flexor strength, range of motion, upper arm circumference, plasma creatine kinase activity, and muscle soreness. RESULTS Delayed-onset muscle soreness was significantly less for the massage condition for peak soreness in extending the elbow joint and palpating the brachioradialis muscle (P < .05). Soreness while flexing the elbow joint (P = .07) and palpating the brachialis muscle (P = .06) was also less with massage. Massage treatment had significant effects on plasma creatine kinase activity, with a significantly lower peak value at 4 days postexercise (P < .05), and upper arm circumference, with a significantly smaller increase than the control at 3 and 4 days postexercise (P < .05). However, no significant effects of massage on recovery of muscle strength and ROM were evident. CONCLUSIONS Massage was effective in alleviating DOMS by approximately 30% and reducing swelling, but it had no effects on muscle function.
Focusing of bistatic SAR data

The problems of simulation of bistatic SAR raw data and focusing are studied. A discrete target simulator is described. The simulator introduces the scene topography and compute the integration time of general bistatic configurations providing a means to derived maps of the range and azimuth spatial resolutions. The problem of focusing of bistatic SAR data acquired in a translational-invariant bistatic configuration is studied by deriving the bistatic Point Target Reference spectrum and presenting an analytical solution for its stationary points.
Statistical learning bias predicts second-language reading efficiency

Statistical learning (SL) is increasingly invoked as a set of general-purpose mechanisms upon which language learning is built during infancy and childhood. Here we investigated the extent to which SL is related to adult language processing. In particular, we asked whether SL proclivities towards relations that are more informative of English are related to efficiency in reading English sentences by native speakers of Korean. We found that individuals with a stronger statistical learning sensitivity showed a larger effect of conditional word probability on word reading times, indicating that they more efficiently incorporated statistical regularities of the language during reading. In contrast, L2 English proficiency was related to overall reading speed but not to the use of statistical regularities.
Transcriptional Regulation of the Staphylococcus aureus Thioredoxin and Thioredoxin Reductase Genes in Response to Oxygen and Disulfide Stress

ABSTRACT In this report we describe the cloning, organization, and promoter analysis of the Staphylococcus aureus thioredoxin (trxA) and thioredoxin reductase (trxB) genes and their transcription in response to changes in oxygen concentration and to oxidative stress compounds. Northern analysis showed that the S. aureus trxA and trxB genes were transcribed equally well in aerobic and anaerobic conditions. Several oxidative stress compounds were found to rapidly induce transcription of the trxA and trxB genes. The most pronounced effects were seen with diamide, a thiol-specific oxidant that promotes disulfide bond formation; menadione, a redox cycling agent; and τ-butyl hydroperoxide, an organic peroxide. In each case the induction was independent of the general stress sigma factor σB. These studies show that the S. aureus trxA and trxB genes are upregulated following exposure to these oxidative stress agents, resulting in increased disulfide bond formation. In contrast, no effect of hydrogen peroxide on induction of the trxA and trxB genes was seen. We also show that the S. aureus thioredoxin reductase appears to be essential for growth. This observation, coupled with structural differences between the bacterial and mammalian thioredoxin reductases, suggests that it may serve as a target for the development of new antimicrobials.
Origins and size distribution of metallic iron particles in the lunar regolith

The metallic iron concentration has been measured in three ranges of metal particle diameters for 79 lunar soils by a combination of static magnetic and ferromagnetic resonance techniques. Based on these measurements, a model has been developed which apportions the total metallic iron content of lunar soils between three components: (1) metallic iron particles produced from the exposure-induced reduction of ferrous iron; they range from 40 to 330 A in diameter and are predominantly associated with agglutinate glass; (2) metallic iron particles derived from the metallic phases of the micrometeorites involved in the formation of agglutinate glass; these particles are mostly greater than 300 A in diameter; and (3) metallic iron particles in the source materials such as bedrock and breccias; these are usually greater than 330 A in diameter. The maximum concentration of metallic iron in lunar regolith is estimated at about 0.7 equiv. wt% in highland regions (approximately 5.0 wt% FeO) and about 1.0 equiv. wt% in mare regions (approximately 15.0 wt% FeO).
Mechanisms of gaze and attention guidance in visual exploration

On average, humans execute over 150,000 saccades each day. Because of the small visual angle subtended by the fovea, exhaustive exploration of the visual surroundings, i.e. complete sampling of the whole visual field, would be much ineffective. Consequently, the decision of where to move the gaze in order to optimize visual information gathering is critical. How the brain achieves this computational conundrum is the central question addressed in the present work.