Miracle-dz/UniFAR-FTUs huggingface dataset:
Avalanche: Putting the Spirit of the Web back into Semantic Web Querying

Traditionally Semantic Web applications either included a web crawler or relied on external services to gain access to the Web of Data. Recent efforts, have enabled applications to query the entire Semantic Web for up-to-date results. Such approaches are based on either centralized indexing of semantically annotated metadata or link traversal and URI dereferencing as in the case of Linked Open Data. They pose a number of limiting assumptions, thus breaking the openness principle of the Web. In this demo we present a novel technique called Avalanche, designed to allow a data surfer to query the Semantic Web transparently. The technique makes no prior assumptions about data distribution. Specifically, Avalanche can perform "live" queries over the Web of Data. First, it gets on-line statistical information about the data distribution, as well as bandwidth availability. Then, it plans and executes the query in a distributed manner trying to quickly provide first answers.
Monocular SLAM for Autonomous Robots with Enhanced Features Initialization

This work presents a variant approach to the monocular SLAM problem focused in exploiting the advantages of a human-robot interaction (HRI) framework. Based upon the delayed inverse-depth feature initialization SLAM (DI-D SLAM), a known monocular technique, several but crucial modifications are introduced taking advantage of data from a secondary monocular sensor, assuming that this second camera is worn by a human. The human explores an unknown environment with the robot, and when their fields of view coincide, the cameras are considered a pseudo-calibrated stereo rig to produce estimations for depth through parallax. These depth estimations are used to solve a related problem with DI-D monocular SLAM, namely, the requirement of a metric scale initialization through known artificial landmarks. The same process is used to improve the performance of the technique when introducing new landmarks into the map. The convenience of the approach taken to the stereo estimation, based on SURF features matching, is discussed. Experimental validation is provided through results from real data with results showing the improvements in terms of more features correctly initialized, with reduced uncertainty, thus reducing scale and orientation drift. Additional discussion in terms of how a real-time implementation could take advantage of this approach is provided.
Personalized Web Page Ranking Using Trust and Similarity

Search engines, like Google, use link structure to rank web pages. Although this approach provides an objective global estimate of the web page importance, it is not targeted to the specific user preferences. This paper presents a novel approach for the personalization of the results of a search engine based on the user's taste and preferences. The concepts of trust and similarity, captured from explicit user input and implicit user behavioral patterns, are used to compute personalized page rankings.
Sensitivity of Allelic Divergence to Genomic Position: Lessons from the Drosophila tan Gene

To identify genetic variants underlying changes in phenotypes within and between species, researchers often utilize transgenic animals to compare the function of alleles in different genetic backgrounds. In Drosophila, targeted integration mediated by the ΦC31 integrase allows activity of alternative alleles to be compared at the same genomic location. By using the same insertion site for each transgene, position effects are generally assumed to be controlled for because both alleles are surrounded by the same genomic context. Here, we test this assumption by comparing the activity of tan alleles from two Drosophila species, D. americana and D. novamexicana, at five different genomic locations in D. melanogaster. We found that the relative effects of these alleles varied among insertion sites, with no difference in activity observed between them at two sites. One of these sites simply silenced both transgenes, but the other allowed expression of both alleles that was sufficient to rescue a mutant phenotype yet failed to reveal the functional differences between the two alleles. These results suggest that more than one insertion site should be used when comparing the activity of transgenes because failing to do so could cause functional differences between alleles to go undetected.
Sentence-Level Combination of Machine Translation Outputs with Syntactically Hybridized Translations

We describe a novel idea to improve machine translation by combining multiple candidate translations and extra translations. Without manual work, extra translations can be generated by identifying and hybridizing the syntactic equivalents in candidate translations. Candidate and extra translations are then combined on sentence level for better general translation performance. key words: combination, machine translation, automatic extension, syntactic equivalent
Performance of forward-link cellular DS-CDMA over frequency-selective multipath fading channels

A new frequency-selective multipath-fading model is studied for a forward-link direct-sequence code-division multiple-access (DS-CDMA) system with a multi-cell configuration. In the performance evaluation of this model, the probability density function (pdf) of the interference-to-signal ratio is first derived in closed form. This pdf is then employed to form a compact expression for efficient bit-error rate (BER) evaluation. Numerical results show that more RAKE fingers are important to ensure good forward-link cellular performance when the mobiles travel through different topographical environments.
Computing Egomotion with Local Loop Closures for Egocentric Videos

Finding the camera pose is an important step in many egocentric video applications. It has been widely reported that, state of the art SIAM algorithms fail on egocentric videos [1, 2, 3, 4]. In this paper, we propose a robust method for camera pose estimation, designed specifically for egocentric videos. In an egocentric video, the camera views the same scene point multiple times as the wearer's head sweeps back andforth. We use this specific motion profile to perform. Short loop closures aligned with wearer'sfootsteps. For egocentric videos, depth estimation is usually noisy. In an important departure, we use 2D computations for rotation averaging which do not rely upon depth estimates. The two modification results in much more stable algorithm as is evidentfrom our experiments on various egocentric video datasets for different egocentric applications. The proposed algorithm resolves a long standing problem in egocentric vision and unlocks new usage scenarios for future applications.
Phenotype plasticity in postural muscles of the crayfish Orconectes limosus Raf.: correlation of myofibrillar ATPase-based fiber typing with electrophysiological fiber properties and the effect of chronic nerve stimulation.

The characteristics of the medial and lateral superficial extensor muscles (sem and sel) in the crayfish Orconectes limosus abdomen and their developmental and activity-dependent plasticity were studied. It was shown that both muscles are innervated by at least five excitatory and one inhibitory motor neuron in a nonuniform pattern. The muscles are composed of at least three different mATPase histochemistry-based fiber types that are all different from a fourth type in the uniform deep extensor muscles. sem and sel are composed of different ratios of these fiber types but do not show a constant fiber type pattern between segments and even between hemisegments. The three histochemically defined superficial extensor-fiber types have characteristic electrophysiological properties. The fiber types were shown to develop successively during the first postembryonic stages of development without a change in the number of muscle fibers. Based on histochemical ATPase staining after 21 days of chronic stimulation by means of an implantable, double-hook electrode, we show preliminary evidence that the fiber composition in the sem can switch from the presumably fast fiber type III to an intermediate type II. Repeated axotomy up to 53 days had no effect on the fiber type composition of the muscles.
Australasian ( ACIS ) 2010 User Perceived Requirements for a Mobile Accounting Information System

Mobile technologies are giving rise to significant changes in the way that organisations operate and conduct business. However, up to now no existing online accounting service has been delivered via a mobile channel. While there is a business interest in extending online accounting to mobile devices there is scarce empirical research examining the user requirements of mobile accounting services. Using user requirements elicitation techniques, this research investigated the mobility requirements of customers of an online accounting system offered by a New Zealand based firm. The findings illustrate end-users’ mobility requirements as well as their perceptions of which key accounting software functionalities should be extended and adapted to a mobile channel. The paper concludes with a summary of the findings and recommendations for future research.
Secretion of α-Amylase from Pseudoalteromonas haloplanktis TAB23: Two Different Pathways in Different Hosts

ABSTRACT Secretion of cold-adapted α-amylase from Pseudoalteromonas haloplanktis TAB23 was studied in three Antarctic bacteria. We demonstrated that the enzyme is specifically secreted in the psychrophilic hosts even in the absence of a protein domain that has been previously reported to be necessary for α-amylase secretion in Escherichia coli. The occurrence of two different secretion pathways in different hosts is proposed.
Divergent LIN28-mRNA associations result in translational suppression upon the initiation of differentiation

LIN28 function is fundamental to the activity and behavior of human embryonic stem cells (hESCs) and induced pluripotent stem cells. Its main roles in these cell types are the regulation of translational efficiency and let-7 miRNA maturation. However, LIN28-associated mRNA cargo shifting and resultant regulation of translational efficiency upon the initiation of differentiation remain unknown. An RNA-immunoprecipitation and microarray analysis protocol, eRIP, that has high specificity and sensitivity was developed to test endogenous LIN28-associated mRNA cargo shifting. A combined eRIP and polysome analysis of early stage differentiation of hESCs with two distinct differentiation cues revealed close similarities between the dynamics of LIN28 association and translational modulation of genes involved in the Wnt signaling, cell cycle, RNA metabolism and proteasomal pathways. Our data demonstrate that change in translational efficiency is a major contributor to early stages of differentiation of hESCs, in which LIN28 plays a central role. This implies that eRIP analysis of LIN28-associated RNA cargoes may be used for rapid functional quality control of pluripotent stem cells under manufacture for therapeutic applications.
Reactionless Control for two Manipulators Mounted on a Cable-Suspended Platform

The dynamics and control of a cable-suspended, two-arm robotic system are developed for an entertainment application. One manipulator arm is controlled to fulfil a user defined task. The second arm is then controlled to compensate for the disturbances on the cable-suspended platform arising from the motion of the first. Model-based feedforward control, stemming from the momentum conservation equations of a free-floating robot, is developed for the motion compensation problem. Furthermore, due to model uncertainty, sensor-based feedback control is introduced, to account for undesired oscillatory motions of the system. The latter control problem reduces to the dissipation of the oscillatory energy of the system, by means of adequate robot control. Both control methods are implemented and tested on an experimental set-up
The Chandra View of DA 530: A Subenergetic Supernova Remnant with a Pulsar Wind Nebula?

DA 530 (G93.3+6.9) is a high Galactic latitude supernova (SN) remnant with a well-defined shell-like radio morphology and an exceptionally low X-ray-to-radio luminosity ratio. Based on a Chandra ACIS observation, we report the detection of an extended X-ray feature close to the center of the remnant at 5.3 σ above the background within a circle of 20'' radius. The spectrum of this feature can be characterized by a power law with photon index Γ = 1.6 ± 0.8. This feature, which is spatially coincident with a nonthermal radio source, most likely represents a pulsar wind nebula. We have further examined the spectrum of the diffuse X-ray emission from the remnant's interior, which has a background-subtracted count rate of ~0.06 s-1 at 0.3-3.5 keV. The emission spectrum can be described by a thermal plasma with a temperature of ~0.3-0.6 keV and an Si overabundance of ≳7 times solar. These spectral characteristics, together with the extremely low X-ray luminosity, suggest that the remnant arose from a SN with an anomalously low mechanical energy (<1050 ergs). The centrally filled thermal X-ray emission of the remnant may indicate an early thermalization of the SN ejecta by the circumstellar medium. Our results suggest that the remnant is likely the product of a core-collapse SN with a progenitor mass of 8-12 M☉. Similar remnants are probably common in the Galaxy but have rarely been studied.
Risk-Taking Behavior in a Computerized Driving Task: Brain Activation Correlates of Decision-Making, Outcome, and Peer Influence in Male Adolescents

Increased propensity for risky behavior in adolescents, particularly in peer groups, is thought to reflect maturational imbalance between reward processing and cognitive control systems that affect decision-making. We used functional magnetic resonance imaging (fMRI) to investigate brain functional correlates of risk-taking behavior and effects of peer influence in 18–19-year-old male adolescents. The subjects were divided into low and high risk-taking groups using either personality tests or risk-taking rates in a simulated driving task. The fMRI data were analyzed for decision-making (whether to take a risk at intersections) and outcome (pass or crash) phases, and for the influence of peer competition. Personality test-based groups showed no difference in the amount of risk-taking (similarly increased during peer competition) and brain activation. When groups were defined by actual task performance, risk-taking activated two areas in the left medial prefrontal cortex (PFC) significantly more in low than in high risk-takers. In the entire sample, risky decision-specific activation was found in the anterior and dorsal cingulate, superior parietal cortex, basal ganglia (including the nucleus accumbens), midbrain, thalamus, and hypothalamus. Peer competition increased outcome-related activation in the right caudate head and cerebellar vermis in the entire sample. Our results suggest that the activation of the medial (rather than lateral) PFC and striatum is most specific to risk-taking behavior of male adolescents in a simulated driving situation, and reflect a stronger conflict and thus increased cognitive effort to take risks in low risk-takers, and reward anticipation for risky decisions, respectively. The activation of the caudate nucleus, particularly for the positive outcome (pass) during peer competition, further suggests enhanced reward processing of risk-taking under peer influence.
Rapid Functional Exhaustion and Deletion of CTL following Immunization with Recombinant Adenovirus1

Replication-deficient adenoviruses (recombinant adenovirus (rec-AdV)) expressing different transgenes are widely used vectors for gene therapy and vaccination. In this study, we describe the tolerization of transgene-specific CTL following administration of β-galactosidase (βgal)-recombinant adenovirus (Ad-LacZ). Using MHC class I tetramers to track βgal-specific CTL, we found that a significant expansion of βgal-specific CTL was restricted to a very narrow dose range. Functional analysis revealed that adenovirus-induced βgal-specific CTL produced only very low amounts of effector cytokines and were unable to exhibit cytolytic activity in a 51Cr release assay. Furthermore, Ad-LacZ vaccination failed to efficiently clear established βgal-positive tumors. The impaired function of Ad-LacZ-induced CTL correlated with the presence of persisting βgal Ag in the liver. A further increase in the peripheral Ag load by injection of Ad-LacZ into SM-LacZ transgenic mice which express βgal as self-Ag exclusively in peripheral nonlymphoid organs, resulted in the physical deletion of βgal-specific CTL. Our results indicate first that CTL deletion in the course of adenoviral vaccination is preceded by their functional impairment and second, that the outcome of rec-AdV vaccination depends critically on the Ag load in peripheral tissues.
Static and dynamic accuracy of a magnetic-inertial measurement unit used to provide racket swing kinematics

Abstract Magnetic-inertial measurement units (MIMUs) are becoming more prevalent in sports biomechanics and may be a viable tool to evaluate kinematic parameters. This study examined the accuracy of a MIMU to estimate orientation angles under static conditions and dynamically from a squash racket during a forehand drive shot. A MIMU was mounted onto a goniometer and moved through 0–90°, with static data collected at 10° increments during 10 repetitions of all three axes. Typical error analyses showed the MIMU to be very reliable (TE ≤ 0.03°). MIMU accuracy was determined via intraclass correlation coefficients (ICC) (r > 0.999, p < 0.001). An ordinary least products regression showed no proportional bias and minimal fixed bias for all axes. Dynamic accuracy was assessed by comparing MIMU and optical motion capture data of squash racket swing kinematics. A MIMU was fixed onto a racket and 10 participants each hit 10 forehand shots. Mean orientation angle error at ball impact was <0.50° and ICC showed very high correlations (r ≥ 0.988, p < 0.001) for all orientations. Swing phase root mean squared errors were ≤2.20°. These results indicate that a MIMU could be used to accurately and reliably estimate selected racket swing kinematics.
Three-dimensional cone-beam computed tomography based comparison of condylar position and morphology according to the vertical skeletal pattern

Objective To compare condylar position and morphology among different vertical skeletal patterns. Methods Diagnostic cone-beam computed tomography images of 60 adult patients (120 temporomandibular joints) who visited the orthodontic clinic of Hallym University Sacred Heart Hospital were reviewed. The subjects were divided into three equal groups according to the mandibular plane angle: hypodivergent, normodivergent, and hyperdivergent groups. Morphology of the condyle and mandibular fossa and condylar position were compared among the groups. Results The hypodivergent and hyperdivergent groups showed significant differences in superior joint spaces, antero-posterior condyle width, medio-lateral condyle width, condyle head angle, and condylar shapes. Conclusions Condylar position and morphology vary according to vertical facial morphology. This relationship should be considered for predicting and establishing a proper treatment plan for temporomandibular diseases during orthodontic treatment.
Calibration of a real-time load-pull system using the generalized theory of the TRM technique

The thru-reflect-match (TRM) calibration technique uses as calibration structures a thru, a pair of highly reflecting loads and two loads of impedance close to the measuring system impedance (Z0). In practice, the loads used as match standard may be nonsymmetrical and of impedance different from Z0. By using the ABCD-parameters matrix formalism, in this paper the calibration of a load-pull system is carried out by using a generalized theory of the TRM technique, allowing the use of nonsymmetrical loads of arbitrary impedance. The impact of ignoring the asymmetry and frequency-dependent impedance of the loads used as match standard on the determination of the load-pull contours of constant output power is investigated.
Transition from School to Work for Individuals with Severe Handicaps: A Follow-Up Study

The present study assessed the employment status of 117 transition age young adults with moderate, severe, or profound mental retardation in Virginia. Data were collected by trained interviewers on variables related to employment level, wages earned, types of jobs, assistance available in job identification, and so forth. The findings of this study indicated high unemployment rates of almost 88%, with only 14 of the 117 persons holding competitive jobs in nonsheltered work environments. Wage accumulation was very limited. Implications of these results and other similar studies for future programming are then discussed.
Dissociable brain states linked to common and creative object use

Studies of conceptual processing have revealed that the prefrontal cortex is implicated in close‐ended, deliberate memory retrieval, especially the left ventrolateral prefrontal regions. However, much of human thought—particularly that which is characterized as creative—requires more open‐ended, spontaneous memory retrieval. To explore the neural systems that support conceptual processing under these two distinct circumstances, we obtained functional magnetic resonance images from 24 participants either while retrieving the common use of an everyday object (e.g., “blowing your nose,” in response to a picture of a tissue) or while generating a creative (i.e., uncommon but plausible) use for it (e.g., “protective padding in a package”). The patterns of activation during open‐ and closed‐ended tasks were reliably different, with regard to the magnitude of anterior versus posterior activation. Specifically, the close‐ended task (i.e., Common Use task) reliably activated regions of lateral prefrontal cortex, whereas the open‐ended task (i.e., Uncommon Use task) reliably activated regions of occipito‐temporal cortex. Furthermore, there was variability across subjects in the types of responses produced on the open‐ended task that was associated with the magnitude of activation in the middle occipital gyrus on this task. The present experiment is the first to demonstrate a dynamic tradeoff between anterior frontal and posterior occipitotemporal regions brought about by the close‐ or open‐ended task demands. Hum Brain Mapp, 2011. © 2010 Wiley‐Liss, Inc.
Traffic Engineering Techniques and Algorithms for the Internet

Traffic engineering broadly relates to optimization of the operational performance of a network. This survey discusses techniques like multi-path routing, traffic splitting, constraint-based routing, path-protection etc. that are used for traffic engineering in contemporary Internet Service Provider (ISP) networks. These techniques can be classified under two broad classes, connectionless and connection-oriented, that dominate the current debate on next-generation routing and traffic engineering in IP networks. The connectionless approach evolves current distance-vector and link-state algorithms, or influences routing metrics. The connection-oriented approach uses signaling and is being used by techniques like Multi Protocol Label Switching (MPLS). Connection-oriented techniques offer a convenient way to monitor, allocate, reroute, and protect resources for a given traffic on an explicit and flexible basis. This survey will examine the core problems, discuss solutions in both connectionless and signaled approach, and point to topics for research and advanced development. 1 Debashis Basak is with Accelight Networks 2 Hema Tahilramani Kaur and Shivkumar Kalyanaraman are with Rensselaer Polytechnic Institute, Dept of ECSE.