Miracle-dz/UniFAR-FTUs huggingface dataset:
Improving Recommendation Flow with Centrality Measure in an Evolving Social Network

The purpose of our research is to make a connection between information related to structural position of entities and individual advice selection criteria in an explicitly mentioned friendship or trust network of users. We provide a reliable mechanism in which users are able to cover most of the related information available matched with their preferences by going further to the network. We showed in our model that structural position of the network can be treated as a useful source of information by improving flow of information in the system. Finally we have implemented our model as a trust-based exchange mechanism for advice selection in Net Logo. As the results show, by embedding such information we are able to increase the utility of entities and overall utility of the system.
An Outer Bound for the Gaussian MIMO Broadcast Channel With Common and Private Messages

We consider the Gaussian multiple-input multiple-output (MIMO) broadcast channel with common and private messages. We obtain an outer bound for the capacity region of this channel. To this end, we show that a parallel Gaussian broadcast channel can be constructed from any given Gaussian MIMO broadcast channel by using the generalized singular value decomposition and a relaxation on the power constraint for the channel input. Due to this relaxation of the power constraint, the capacity region of the constructed parallel channel, which is known, provides an outer bound for the capacity region of the original channel. We show that this outer bound is within a finite gap of the capacity region by comparing it with an achievable rate region that can be obtained either by using dirty-paper coding or by using a variation of the zero-forcing scheme.
Sequential particle filtering in the presence of additive Gaussian noise with unknown parameters

In sequential signal processing, the main objective is to estimate evolving states. Often, however, the models under consideration contain additional unknowns, which are time invariant. When the state estimation is carried out by sequential importance sampling methods, the presence of fixed unknowns can present a nontrivial problem. In this paper, we provide a solution to this problem when the fixed unknowns are the covariance matrices of the additive Gaussian noise vectors in the state and observation equations. These matrices are first marginalized, and then the sequential processing carried out as usual. In the implementation of this approach, besides the assignment of a weight to every particle, two additional evolving quantities are required. Simulation results are provided that show the performance of the method.
A Sparse Voxel Octree-Based Framework for Computing Solar Radiation Using 3D City Models

An effective three-dimensional (3D) data representation is required to assess the spatial distribution of the photovoltaic potential over urban building roofs and facades using 3D city models. Voxels have long been used as a spatial data representation, but practical applications of the voxel representation have been limited compared with rasters in traditional two-dimensional (2D) geographic information systems (GIS). We propose to use sparse voxel octree (SVO) as a data representation to extend the GRASS GIS r.sun solar radiation model from 2D to 3D. The GRASS GIS r.sun model is nested in an SVO-based computing framework. The presented 3D solar radiation computing framework was applied to 3D building groups of different geometric complexities to demonstrate its efficiency and scalability. We presented a method to explicitly compute diffuse shading losses in r.sun, and found that diffuse shading losses can reduce up to 10% of the annual global radiation under clear sky conditions. Hence, diffuse shading losses are of significant importance especially in complex urban environments.
Peak-to-Average Power Ratio Reduction by Polyphase Interleaving and Inversion for SFBC MIMO-OFDM with Generalized Complex Orthogonal Code

For orthogonal frequency division multiplexing (OFDM) systems, several peak-to-average power ratio (PAPR) reduction schemes have been presented in recent years. For space-time block coding (STBC),Tan et al [2005] proposed a method for reducing PAPR using cross antenna rotation and inversion. To better handle dispersive channel, space frequency block coding (SFBC) MIMO-OFDM is preferred. For such scheme PAPR reduction approach named polyphase interleaving and inversion (PII) was proposed by Zoran and Bar-Ness. It is applied to SFBC MIMO-OFDM based Alamouti scheme with only two transmitting antennas. Extension to the case where more than two transmit antennas and especially the case of four antennas is the main issue of this paper. It employs Tarokh's generalized complex orthogonal code. As the reduced complexity version of PII, this scheme commonly goes under the abbreviation RC-PII (reduced complexity PII).
Placental virtual biopsy: 3D-US hemodynamics of normal pregnancy versus gestational diabetes

Objectives: We used three-dimensional ultrasound with trans-abdominal Power-Doppler (3D-US PD) to determine placental vascular evolution in normal pregnancies (NP) and in insulin-dependent Gestational Diabetes Pregnancies (GDP). Study design: We obtained 473 measurements from 43 NP at 20 weeks -40 weeks gestation and 122 measurements from 70 insulin-dependent GDP at 22 weeks -40 weeks. Standardization was achieved recording three successive placental vascular tree volumes, measuring the spherical volume between the chorionic and basal plates always under or near funicular insertion. Parameters analysed were: mean intensity of blood flow (Flow Index, FI); percentage of volume occupied by vessels (Vascularisation Index, VI); and intensity of blood flow in the volume occupied by vessels (Vascularisation-flow index, VFI). Results: In NP, FI increased throughout early pregnancy and decreased before delivery and correlated with fetal parameters. In contrast, in GDP, FI was high from the onset, better correlated with placental parameters, and had a diagnostic cutoff value of 45, which was only found in 7% of NP at the end of the pregnancy. VI was variable and had a low diagnostic value, being related to placental parameters; VI values were significantly lower in NP ( 17.4 ± 7.4%) than in GDP (21 ± 12%) with a diagnostic cutoff point at 31%. In NP, FI-peak was at 32 weeks, two weeks after the VI-peak, while VFI showed no significant differences. Conclusions: The results showed that placental blood flow (FI) was related to fetal circulation, while the percentage of vessels per volume (VI) was related to maternal circulation. 3D-US PD indicated a diagnosis of GDP for FI > 45 and VI > 30%. We also discuss the values of change in VI that predict changes in fetal FI.
Post Shared, Vote Shared: Investigating the Link Between Facebook Performance and Electoral Success During the Hungarian General Election Campaign of 2014

This study investigates how candidates’ Facebook performance, measured by the number of average shares, likes, and comments per post, affects the personal vote they gained during the Hungarian general election campaign of 2014. The database contains three of the most voted-for candidates owning Facebook pages from all single-member districts. The results show that the average number of shares on candidates’ Facebook pages is positively associated with electoral outcome after controlling for, inter alia, the vote share of their respective party on list in the districts, whereas the numbers of likes and comments are not significantly related to the dependent variable.
Abortive Transposition by a Group II Intron in Yeast Mitochondria

Group II intron homing in yeast mitochondria is initiated at active target sites by activities of intron-encoded ribonucleoprotein (RNP) particles, but is completed by competing recombination and repair mechanisms. Intron aI1 transposes in haploid cells at low frequency to target sites in mtDNA that resemble the exon 1-exon 2 (E1/E2) homing site. This study investigates a system in which aI1 can transpose in crosses (i.e., in trans). Surprisingly, replacing an inefficient transposition site with an active E1/E2 site supports <1% transposition of aI1. Instead, the ectopic site was mainly converted to the related sequence in donor mtDNA in a process we call “abortive transposition. ” Efficient abortive events depend on sequences in both E1 and E2, suggesting that most events result from cleavage of the target site by the intron RNP particles, gapping, and recombinational repair using homologous sequences in donor mtDNA. A donor strain that lacks RT activity carries out little abortive transposition, indicating that cDNA synthesis actually promotes abortive events. We also infer that some intermediates abort by ejecting the intron RNA from the DNA target by forward splicing. These experiments provide new insights to group II intron transposition and homing mechanisms in yeast mitochondria.
Effect of Non-Steroidal Anti-Inflammatory Drugs on Bone Healing

Nonspecific and COX-2 selective nonsteroidal anti-inflammatory drugs (NSAIDs) function by inhibiting the cyclooxygenase isoenzymes and effectively reduce pain and inflammation attributed to acute or chronic musculoskeletal pathologies. However, use of NSAIDs as an analgesic is thought to negatively contribute to bone healing. This review strived to provide a thorough unbiased analysis of the current research conducted on animals and humans regarding NSAIDs and their effect on bone healing. Specifically, this review discusses the role of animal models, dosing regiments, and outcome parameters when examining discrepancies about NSAIDS and their effects on bone regeneration. The role of COX-2 in bone regeneration needs to be better defined in order to further elucidate the impact of NSAIDs on bone healing.
Grain size dependence of magnetic properties in shock synthesized bulk Pr2Fe14B∕α-Fe nanocomposites

The structural and magnetic properties of the melt-spun Pr2Fe14B∕α-Fe nanocomposite powders consolidated via shock-wave compression and subjected to postshock thermal treatment were investigated. Shock compression results in grain refinement, which leads to a reduction of an effective anisotropy and therefore an increase in the ferromagnetic exchange length, resulting in an enhanced exchange coupling in fully consolidated bulk magnets. A small amount of amorphous phase formed during the shock compression were observed to crystallize into Pr2Fe14B upon annealing above 600°C. The heat treatment also results in the recovery of coercivity partially lost during the consolidation, which can be related directly to the dependence of the effective anisotropy on the grain size, as illustrated by the transmission electron microscopy observation of grain refinement in the shock-consolidated bulk samples. A uniform grain morphology is suggested as a means for further increasing the magnetic properties of bulk nanocomp.
Scattering of Monatomic Gas Molecules on Vertically Aligned Single‐Walled Carbon Nanotubes

The scattering process of He molecules on vertically aligned single‐walled carbon nanotubes (VA‐SWNTs) was investigated using the molecular beam technique. The accommodation coefficients for VA‐SWNT films on quartz substrates at room temperature are remarkably high compared to those for bare surfaces, demonstrating the effectiveness of the surface modification technique with VA‐SWNT films for enhancing the energy transfer between gas molecules and surfaces. The enhanced energy transfer suggests that gas molecules can easily penetrate deep into the films because of their high porosity and suffer multiple collisions with bundles of SWNTs. The less effective energy accommodation at elevated temperatures, however, implies that the average number of collisions which gas molecules undergo before leaving the films is not large enough to maintain the perfect accommodation even at high temperature.
Dynamic Game-Play Arbitrators with 3D Voronoi Diagrams

Voronoi Diagrams (VD) have recently been proposed as a way to enable Massively Multi-player On-line Games (MMOG) and Virtual Environments (VE) on fully Peer-to-Peer (P2P) network architectures. Using typical two-dimensional varieties, the peers maintain direct single-hop connections to others in the game-world in a scalable manner. However, direct connections do not guarantee the timely delivery of update messages amongst peers. There is also the issue of fair game-play resolution between opposing players. Thus, as is standard industry practice, game-play arbitrators are needed. Arbitrators also incorporate lag-compensation techniques which improve the responsiveness felt by individual players, thereby enhancing their experience. The approach outlined in this short paper aims to bridge the gap between industry and academia, by introducing the use of an additional 3rd dimension when deriving the VDs. Initial experimentation indicates that 3D-VD is computationally feasible within the time constraints of a typical game. A discussion into several metrics that can act as the differentiating 3rd dimension is also included.
The late reionization of filaments

We study the topology of reionization using accurate three-dimensional radiative transfer calculations post-processed on outputs from cosmological hydrodynamic simulations. In our simulations, reionization begins in overdense regions and then 'leaks' directly into voids, with filaments reionizing last owing to their combination of a high recombination rate and low emissivity. This result depends on the uniquely biased emissivity field predicted by our prescriptions for star formation and feedback, which have previously been shown to account for a wide array of measurements of the post-reionization Universe. It is qualitatively robust to our choice of simulation volume, ionizing escape fraction and spatial resolution (in fact, it grows stronger at higher spatial resolution) even though the exact overlap redshift is sensitive to each of these. However, it weakens slightly as the escape fraction is increased owing to the reduced density contrast at higher redshift. We also explore whether our results are sensitive to commonly employed approximations such as using optically thin Eddington tensors or substantially altering the speed of light. Such approximations do not qualitatively change the topology of reionization. However, they can systematically shift the overlap redshift by up to Δz ∼ 0.5, indicating that accurate radiative transfer is essential for computing reionization. Our model cannot simultaneously reproduce the observed optical depth to Thomson scattering and ionization rate per hydrogen atom at z = 6, which could owe to numerical effects and/or missing early sources of ionization.
Pseudonymous communications in secure industrial wireless sensor networks

Wireless sensor networks are becoming widely deployed in the industry. They are used to provide contextual information about the industrial environment being surveyed, to control and monitor the industrial processes, and even for workers who can be augmented with sensors. In these wireless networks, an adversary can easily eavesdrop communications with the aim to collect private information about sensors, because of the open nature of the wireless medium. A usual solution to prevent privacy violation relies on the use of pseudonyms as sensor identities; however, pseudonyms may deter authentication and access control enforcement in the network. This paper introduces an efficient pseudonym-based scheme that provides privacy protection to sensors without compromising network access security.
Correctness of Compiling Occam to Transputer Code

This paper contributes to the development of a rigorous mathematical framework for the study of provably correct compilation techniques. The proposed method is developed through an implementation of a real-life non-toy imperative programming language with non-determinism and parallelism, i.e. Occam, to a commercial machine, namely the Transputer. We provide a mathematical definition of the Transputer Instruction Set architecture for executing Occam together with a correctness proof for a general compilation schema of Occam programs into Transputer code. We start from the ground model, an abstract processor, running a high and a low priority queue of Occam processes, which formalizes the semantics of Occam at the abstraction level of atomic Occam instructions. We develop here increasingly more refined levels of Transputer semantics, proving correctness (and when possible also completeness) for each refinement step. Along the way we collect our proof assumptions, a set of natural conditions for a compiler to be correct, thus making our proof applicable to a large class of compilers. As a by-product our construction provides a challenging realistic case study for proof verification by theorem provers.
Integrating Version Control and Module Management Using Three-Dimensional Visualization

This paper describes a three-dimensional visualization system with integrates version control and moduel management using 3D space. Users can operate the RCS commandes using GUIs. Moreover, when users need to rebuild an entire softwared, the system automatically retrieves all the necessary files, compiles them, and links them.
Protective role of biological potential curcumin in epileptic seizures and memory impairment

Central nervous system disorders are of great concern due to increasing stress and changing living conditions. Epilepsy is one of the most prevalent CNS disorders, and as a number of side eff ects are associated with the present antiepileptic drug treatments. The effect of curcumin on epileptic seizures, together with its effect on memory retention and the role of monoamines in protection from seizures and memory impairment. The estimations of norepinephrine, dopamine and serotonin in cerebral cortex, cerebellum, hippocampus, pons and hypothalamus made it evident that curcumin exerted a potential antiepileptic and memory retentive effects, with considerable influence on the brain monoamine levels.
The immune system in Duchenne muscular dystrophy: Friend or foe

Duchenne muscular dystrophy (DMD) is a genetic disease caused by mutations in the X-linked dystrophin gene, resulting in reduced or absent protein production, subsequently leading to the structural instability of the dystroglycan complex (DGC), muscle degeneration, and early death in males. Thus, current treatments have been targeting the genetic defect either by bypassing the mutation through exon skipping or replacing the defective gene through gene therapy and stem cell approaches. However, what has been an underappreciated mediator of muscle pathology and, ultimately, of muscle degeneration and fibrotic replacement, is the prominent inflammatory response. Of potentially critical importance, however, is the fact that the elements mediating the inflammatory response also play an essential role in tissue repair. In this opinion piece, we highlight the detrimental and supportive immune parameters that occur as a consequence of the genetic disorder and discuss how changes to immunity can potentially ameliorate the disease intensity and be employed in conjunction with efforts to correct the genetic disorder.
Functional Characterization of Rab7 Mutant Proteins Associated with Charcot-Marie-Tooth Type 2B Disease

Charcot-Marie-Tooth (CMT) type 2 neuropathies are a group of autosomal-dominant axonal disorders genetically and clinically heterogeneous. In particular, CMT type 2B (CMT2B) neuropathies are characterized by severe sensory loss, often complicated by infections, arthropathy, and amputations. Recently, four missense mutations in the small GTPase Rab7 associated with the Charcot-Marie Tooth type 2B phenotype have been identified. These mutations target highly conserved amino acid residues. However, nothing is known about whether and how these mutations affect Rab7 function. We investigated the biochemical and functional properties of three of the mutant proteins. Interestingly, all three proteins exhibited higher nucleotide exchange rates and hydrolyzed GTP slower than the wild-type protein. In addition, whereas 23% of overexpressed wild-type Rab7 was GTP bound in HeLa cells, the large majority of the mutant proteins (82–89%) were in the GTP-bound form, consistent with the data on GTP hydrolysis and exchange rates. The CMT2B-associated Rab7 proteins were also able to bind the Rab7 effector RILP (Rab-interacting lysosomal protein) and to rescue Rab7 function after silencing. Altogether, these data demonstrate that all tested CMT2B-associated Rab7 mutations are mechanistically similar, suggesting that activated forms of the Rab7 are responsible for CMT2B disease.
Cognitive Bias, the Axiological Question and the Epistemic Probability of Theistic Belief

Some recent work in philosophy of religion addresses what can be called the “axiological question,” i.e., regardless of whether God exists, would it be good or bad if God exists? Would the existence of God make the world a better or a worse place? Call the view that the existence of God would make the world a better place “Pro-Theism. ” We argue that Pro-Theism is not implausible, and moreover, many Theists, at least, (often implicitly) think that it is true. That is, many Theists think that various good outcomes would arise if Theism is true. We then discuss work in cognitive science concerning human cognitive bias, before discussing two noteworthy attempts to show that at least some religious beliefs arise because of cognitive bias: Hume’s, and Draper’s and Nichols’s. We then argue that, as a result of certain cognitive biases that result when good outcomes might be at stake, Pro-Theism causes many Theists to inflate the epistemic probability that God exists, and as a result, Theists should lower the probability they assign to God’s existence. Finally, based our arguments, we develop a novel objection to Pascal’s wager. I. The Axiological Question and Pro-Theism Analytic philosophy of religion has generally focused on a handful of questions. Of course, much of the literature concerns the question, “does God exist? ”; some attempt to defend or refute the traditional arguments for or against Theism (the Cosmological argument, the Ontological argument, the Problem of Evil and so on), while others attempt to devise new arguments for or against the existence of God. Some of the literature concerns the divine attributes; e.g., what properties does God have if God exists? And some of the literature focuses on other questions. But one question that has only recently started to generate discussion is: “would it be good or
Autoconcepto, autoeficacia y conductas sexuales de riesgo en adolescentes

In recent decades there has been an increase in risky sexual behaviors that directly affect the health and wellbeing. This trend is present in a greater proportion in the adolescent population, taking into account the characteristics of this stage. The aim of the study was to establish relationships between self-efficacy, self-concept and risky sexual behaviors in adolescents between 14 and 18 years old, from the city of Cali. se llevo a cabo una investigacion de caracter no experimental de tipo descriptivo - correlacional de corte trasversal. A non-experimental cross-sectional descriptivecorrelational study was carried out, with the participation of 133 adolescents. It was evidenced that both self-concept and self-efficacy work as protective factors to avoid risky behaviors for health and as a factor that drives the search for behaviors that benefit it, in this case, risky sexual behaviors. Bearing this in mind, the adolescent, who presents a high index of the variables mentioned above, may opt and put into practice preventive behaviors in the exercise of their sexuality.