Miracle-dz/UniFAR-FTUs huggingface dataset:
Digital camera calibration method based on PhotoModeler

In recent years, with CCD (or CMOS) image sensor as the core components, digital cameras turns into a new generation cameras. Compared with ordinary cameras, digital cameras have a distinct advantage: achieving digital information collection, image processing conveniently, and have been widely used in many fields presently. However, when people using ordinary digital camera doing research, few consider the error of the target image caused by digital camera distortion, digital camera is the important equipment to obtain digital image data, and its camera distortion should attract users attention. To ensure the quality of its results to meet the precision of the measurement tasks, the calibration of each parameter will be an important task. Commonly used camera calibration method including: spatial resection, direct linear transformation, analytical plumb line and self calibration. In this paper we use space resection, obtain calibration images through the establishment of mathematical model calibration, locate the accurate position of pixels and obtain accurate calibration parameters. Getting conclusion by authentication example, provide basic guarantees for the follow-up of Digital close-range photogrammetry and 3D modeling.
A MONOLITHIC FEM SOLVER FOR AN ALE FORMULATION OF FLUID-STRUCTURE INTERACTION WITH CONFIGURATION FOR NUMERICAL BENCHMARKING

We investigate a monolithic algorithm to solve the problem of time dependent interaction between an incompressible viscous fluid and an elastic solid. The continuous formulation of the problem and its discretization is done in a monolithic way, treating the problem as one continuum. The Q2/P dis 1 finite elements are used for the discretization and an approximate Newton method with coupled multigrid linear solver is developed for solving the equations. We discuss possible efficient strategies of setting up the resulting system and its solution. A 2-dimensional configuration is presented to test the developed method. It is based on the older successful DFG benchmark flow around cylinder for incompressible laminar fluid flow. Similar to this older benchmark we consider the flow to be incompressible and in the laminar regime. The structure is allowed to be compressible or incompressible and the deformations of the structure are periodic and significant in terms of displacement. This configuration can be used to compare different numerical methods and code implementations for the fluid-structure interaction problem qualitatively and particularly quantitatively with respect to efficiency and accuracy of the computation.
Robot path planning usingwavefront approach with wall-following

This paper presents a new method for motion planning of mobile robots in dynamic environments based on wave expansion approach which avoids wave re-expansion in sudden obstacles case. Wave re-expansion in big scale environments takes considerable amount of time and process. A new wave expansion algorithm for path finding, either local minima or sudden obstacles are met, has been proposed, as so-called Impeditive Wall Following algorithm, that prevents re-expansion of wave. Furthermore, the simulation results reflects that how the work has improved the already-existing methods. By the use of Impeditive Wall following algorithm it's been tried to prevent the re-expansion of the wave.
HIV-1 Pre-Integration Complexes Selectively Target Decondensed Chromatin in the Nuclear Periphery

Integration of the double-stranded DNA copy of the HIV-1 genome into host chromosomal DNA is a requirement for efficient viral replication. Integration preferentially occurs within active transcription units, however chromosomal site specificity does not correlate with any strong primary sequence. To investigate whether the nuclear architecture may affect viral integration we have developed an experimental system where HIV-1 viral particles can be visualized within the nuclear compartment. Fluorescently labeled HIV-1 virions were engineered by fusing integrase, the viral protein that catalyzes the integration reaction, to fluorescent proteins. Viral tests demonstrate that the infectivity of fluorescent virions, including the integration step, is not altered as compared to wild-type virus. 3-D confocal microscopy allowed a detailed analysis of the spatial and temporal distribution of the pre-integration complexes (PICs) within the nucleus at different moments following infection; the fluorescently labeled PICs preferentially distribute in decondensed areas of the chromatin with a striking positioning in the nuclear periphery, while heterochromatin regions are largely disfavored. These observations provide a first indication of how the nuclear architecture may initially orient the selection of retroviral integration sites.
High Myeloperoxidase Positive Cell Infiltration in Colorectal Cancer Is an Independent Favorable Prognostic Factor

Background Colorectal cancer (CRC) infiltration by adaptive immune system cells correlates with favorable prognosis. The role of the innate immune system is still debated. Here we addressed the prognostic impact of CRC infiltration by neutrophil granulocytes (NG). Methods A TMA including healthy mucosa and clinically annotated CRC specimens (n = 1491) was stained with MPO and CD15 specific antibodies. MPO+ and CD15+ positive immune cells were counted by three independent observers. Phenotypic profiles of CRC infiltrating MPO+ and CD15+ cells were validated by flow cytometry on cell suspensions derived from enzymatically digested surgical specimens. Survival analysis was performed by splitting randomized data in training and validation subsets. Results MPO+ and CD15+ cell infiltration were significantly correlated (p<0.0001; r = 0.76). However, only high density of MPO+ cell infiltration was associated with significantly improved survival in training (P = 0.038) and validation (P = 0.002) sets. In multivariate analysis including T and N stage, vascular invasion, tumor border configuration and microsatellite instability status, MPO+ cell infiltration proved an independent prognostic marker overall (P = 0.004; HR = 0.65; CI:±0.15) and in both training (P = 0.048) and validation (P = 0.036) sets. Flow-cytometry analysis of CRC cell suspensions derived from clinical specimens showed that while MPO+ cells were largely CD15+/CD66b+, sizeable percentages of CD15+ and CD66b+ cells were MPO−. Conclusions High density MPO+ cell infiltration is a novel independent favorable prognostic factor in CRC.
Evaluación de la confianza y del compromiso del candidato político en las redes sociales

Esta investigacion mide como perciben las personas con derecho a voto la comunicacion realizada por los candidatos politicos en redes sociales, y como esas percepciones afectan a la confianza y al compromiso. Para ello, se analizan y definen las variables valores compartidos, comportamiento oportunista y confianza, y se miden empleando escalas de medida fiables y validas en una muestra a juicio obtenida mediante un procedimiento multicanal. Como resultado se presenta un modelo causal en el cual los valores compartidos aumentan el nivel de confianza y el comportamiento oportunista lo reduce, ademas la confianza tiene una relacion directa y positiva en el compromiso.
A Robust Archived Differential Evolution Algorithm for Global Optimization Problems

A robust archived differential evolution algorithm is put forward by means of embedding a flexibility processing operator and an efficiency processing operator based on original DE and ADE. A special constraint-handling mechanism based on dynamic penalty functions and fitness calculation of individuals is adopted in the proposed method to deal with various constraints effectively, which is further extended by means of a flexibility processing operator so as to make it suitable for different type problems, including those with or without constraint(s) and those with continuous, discrete or mixed discrete-continuous variables. Furthermore, an archive of solutions is maintained during the evolutionary process so as to keep the useful information of previous solutions and local optima for the estimation of new solutions. Based on the archive of solutions, an iterative control operator and an efficiency processing operator are designed in the algorithm. The former guides the evolutionary process towards a promising search space, avoiding unnecessary and worthless search. The latter improves the local searching efficiency and the final searching quality. Experimental results based on a suite of six well-known optimization problems reveal that the proposed algorithm is robust, effective, efficient and suitable for different type global optimization problems.
No-reference quality assessment of highly compressed video sequences

In this paper we present a no-reference quality assessment algorithm for highly compressed H.264 videos. By analyzing the spatio-temporal artifacts and their effect on perceived visual quality we produced an array of viable predictors of quality. Using a feature selection method a small sub-set of features, each applied to a specific artefact-domain, was selected for optimal quality estimation. The features are mapped into video quality scores using a simple linear function, which is computationally efficient and minimizes the effect learning of content. The resulting algorithm is evaluated on content independent sets of highly compressed H.264 video sequences from the LIVE video database where it shows high correlation with the subjective scores.
DTNperf_3 at work: aims and use

Delay-/Disruption- Tolerant Networking (DTN) aims at providing interoperable communications in "challenged networks", where long delays, disruption, link intermittency and other challenges prevent, or make difficult, the use of the ordinary Internet architecture. Given their heterogeneity, to assess DTN performance in challenged networks is challenging in and of itself. For this reason, it is essential to develop suitable evaluation tools, with very flexible use. In this demo we present the third major release of DTNperf, a client-server evaluation tool designed to assess goodput and to provide status report logs in DTN Bundle Protocol (BP) architectures. In this third version DTNperf has been greatly enhanced in many respects, including full support of both DTN2 and ION (the BP reference implementation and that developed by NASA JPL, respectively). The demo wants to present both new and enhanced features in a variety of application examples, derived in part from the authors' experience on satellite and space communications. The final aim is to promote its use within the DTN community and receive suggestions from researchers. DTNperf_3 is free software and thanks to its double support is to be included not only in DTN2, as were previous versions, but also in ION.
Clustering Analyses of 300,000 Photometrically Classified Quasars. I. Luminosity and Redshift Evolution in Quasar Bias

Using ~300,000 photometrically classified quasars, by far the largest quasar sample ever used for such analyses, we study the redshift and luminosity evolution of quasar clustering on scales of ~50 h-1 kpc to ~20 h-1 Mpc from redshifts of z̄ ~ 0.75-2.28. We parameterize our clustering amplitudes using realistic dark matter models and find that a ΛCDM power spectrum provides a superb fit to our data with a redshift-averaged quasar bias of b = 2.41 ± 0.08 (P<χ2 = 0.847) for σ8 = 0.9. This represents a better fit than the best-fit power-law model [ω = (0.0493 ± 0.0064) θ-0.928±0.055; P<χ2 = 0.482]. We find bQ increases with redshift. This evolution is significant at >99.6% using our data set alone, increasing to >99.9999% if stellar contamination is not explicitly parameterized. We measure the quasar classification efficiency across our full sample as a = 95.6 ± %, a star-quasar separation comparable to the star-galaxy separation in many photometric studies of galaxy clustering. We derive the mean mass of the dark matter halos hosting quasars as MDMH = (5.2 ± 0.6) × 1012 h-1 M☉. At z̄ ~ 1.9 we find a 1.5 σ deviation from luminosity-independent quasar clustering; this suggests that increasing our sample size by a factor of ~1.8 could begin to constrain any luminosity dependence in quasar bias at z ~ 2. Our results agree with recent studies of quasar environments at z < 0.4, which detected little luminosity dependence to quasar clustering on proper scales ≳50 h-1 kpc. At z < 1.6, our analysis suggests that bQ is constant with luminosity to within ΔbQ ~ 0.6, and that, for g < 21, angular quasar autocorrelation measurements are unlikely to have sufficient statistical power at z ≲ 1.6 to detect any luminosity dependence in quasars' clustering.
Fecal indices to dietary quality of cervids in old-growth forests

Determination of dietary quality for wild ungulates can be both time-consuming and expensive. Because fistulation is usually not possible, determinations require a measure of diet (e.g., fecal analyses, direct feeding observations, tame animals, etc.) and simultaneous measures of nutritional attributes of each dietary component. An alternative approach is to measure a chemical characteristic of fecal material that bears a relationship to the quality or quantity of ingested diets (e.g., Cordova et al. 1978, Holechek et al. 1982b). Fecal nitrogen (FN) is a common index that has been shown to be positively correlated with intake (Arnold and Dudzinski 1963, Langlands et al. 1963, Stallcup et al. 1975), dietary digestibility (Lancaster 1949, Greenhalgh et al. 1960, Marten et al. 1963, Holloway et al. 1981), dietary protein (Raymond 1948, Greenhalgh and Corbett 1960, Hebert 1973, Arman et al. 1975, Erasmus et al. 1978, Mould and Robbins 1981, Holechek et al. 1982a), and weight changes (Gates and Hudson 1981) in a variety of wild and domestic ruminants. Difficulties with using FN as an index of dietary quality have usually resulted from seasonal changes in digestibility of forages (Greenhalgh et al. 1960, Minson and Kemp 1961, Holloway et al. 1981). Fecal indices to dietary quality have received limited application in wildlife management. Arman et al. (1975) contended that FN could be a valuable index if the relationships of dietary nitrogen (DN) and FN could be established for a particular ruminant in a given locality; widespread use was limited because of variability in species, forages, and seasons. Mould and Robbins (1981:327) rejected its utility as a "simple" indicator of dietary quality of wild ruminants because of protein-complexing properties of phenolics and other secondary metabolites in plants (McLeod 1974) that may elevate FN irrespective of DN. However, Gates and Hudson (1981) found that FN reflected changes in quality of forages used by Rocky Mountain elk (Cervus elaphus nelsoni). This paper summarizes the relationships of FN and fecal phosphorus (FP) to DN, dietary phosphorus (DP), and dietary digestibility (DD) of Roosevelt elk (C. e. roosevelti) and Columbian black-tailed deer (Odocoileus hemionus columbianus) in old-growth, coniferous forests of western Washington.
Magnetoresistive Effect in PET Films with Iron Nanoparticles Synthesized by Ion Implantation

Thin polyethyleneterephthalate (PET) layers with Fe nanoparticles (NPs) were synthesized by high-fluence ion implantation. Temperature dependence of conductance and magnetoresistance, were studied as a function of ion fluence. It is found that the implantation with fluences of about 1.0×10 17 cm -2 causes high enough concentration of metal inclu- sions to provide conditions for electrical percolation that leads to an insulator-to-metal transition (IMT) in charge carrier transport mechanisms. The magnetoresistance measurements indicate that the magnetic percolation takes place at metal concentrations (fluences) lower than those needed for the electrical percolation. For the samples on insulating side of the IMT, a non-monotonous dependence of resistance in an increasing external magnetic field is observed due to anisotropic magnetoresistive effect and charge carrier scattering on magnetic inclusions. For the samples implanted with fluences ≥ 1.0×10 17 cm -2 , the magnetoresistance becomes a monotonous decreasing function of the external magnetic field which is typical for ferromagnetic metals that indicates effective magnetic coupling of the iron inclusions.
Metabolic Mapping of Suppression Scotomas in Striate Cortex of Macaques with Experimental Strabismus

Misalignment of the ocular axes induces double vision and rivalry. To prevent these unpleasant sensations, most subjects fixate preferentially with one eye and suppress entirely the deviating eye or else suppress portions of the visual field of either eye. To explore the mechanism of visual suppression, a divergent strabismus (exotropia) was induced in six normal, adult Macaca fascicularis by disinserting the medial rectus muscles. After 4–8 weeks, each animal was chaired to measure its exotropia and to determine its ocular fixation preference. Five of the monkeys developed a clearly dominant eye. It was injected with [3H]proline. Alternate sections from flat-mounts of striate cortex were then processed either for autoradiography to label the ocular dominance columns or for cytochrome oxidase (CO) to assess local metabolic activity. Two CO patterns were seen, often in the same cortex. The first consisted of thin dark columns alternating with wide pale columns. This pattern arose from reduced CO activity in the suppressed eye’s monocular core zones and both eyes’ binocular border strips. The second pattern consisted of thin pale bands from reduced metabolic activity in both eyes’ border strips. The thin dark–wide pale CO pattern was more widespread in the three animals with a strong fixation preference. The dark CO columns usually fit in register with the ocular dominance columns of the fixating eye, suggesting that perception was suppressed in the deviating eye. In most animals, however, the correlation switched in peripheral cortex contralateral to the deviating eye, implying local suppression of the fixating eye’s temporal retina (beyond 10°), as reported in humans with divergent strabismus. In the two animals with a weak fixation preference, pale border strips were found within the central visual field representation in both hemispheres. This CO pattern was consistent with alternating visual suppression. These experiments provide the first anatomical evidence for changes in cortical metabolism that can be correlated with suppression scotomas in subjects with strabismus.
MuPAC: multi-power architecture for cellular networks

We have considered the problem of providing greater throughput in packet data cellular networks. We suggest a novel cellular architecture, the multi-power architecture for cellular networks (MuPAC), based on multiple data channels used at different transmission powers. We discuss path selection mechanism in the context of multi-channel systems and MuPAC. We also offer solutions to problems faced in multi-hop networks: performance degradation at high mobility, pricing issues, partitions etc. MuPAC provides increased throughput compared to existing schemes like the current day cellular systems which can be classified as single-hop cellular network (SCN), and the multi-hop cellular network (MCN). We show using extensive simulations, that MuPAC performs well over a range of node densities, under high mobility, and under high leod conditions. MuPAC can also evolve from the existing infrastructure and offers advantages to both the service provider and the users.
Combining the flexibility of speech synthesis with the naturalness of pre-recorded audio: a comparison of two approaches to phrase-splicing TTS

Many applications of TTS incorporate both unpredictable words, which require the ﬂexibility of TTS, and static phrases, for which the quality of recorded speech is unmatched by TTS. “Phrase-splicing” TTS attempts to provide the optimal combination of the two, by customizing concatenative TTS to such applications by incorporating application-speciﬁc recordings at the word or phrase level while resorting to smaller-unit synthesis to ﬁll the gaps not covered by those recordings. In the past, we have achieved this by using a word-level search on the application-speciﬁc recordings followed by a general-purpose TTS search, in our case using sub-phonetic units, to ﬁll the gaps. However, recent trends toward larger-unit roles in general-purpose TTS suggest a single-search approach for phrase splicing. A listening test shows that we achieve at least as high quality with the new one-search algorithm as with two-search.
Cortical Movement Preparation before and after a Conscious Decision to Move

The idea that our conscious decisions determine our actions has been challenged by a report suggesting that the brain starts to prepare for a movement before the person concerned has consciously decided to move (Libet, Gleason, Wright, & Pearl, 1983). Libet et al. claimed that their results show that our actions are not consciously initiated. The current article describes two experiments in which we attempted to replicate Libet et al.'s comparison of participants' movement-related brain activity with the reported times of their decisions to move and also the reported times of their decisions of which hand to move. We also looked at the distribution of participants' reports over time to evaluate an alternative explanation of Libet et al.'s (1983) results. Although the Readiness Potential was usually present before all of the decisions to move, consistent with the findings of Keller and Heckhausen (1990) and Libet et al. (1983), we found that many reported decision times were before the onset of the Lateralized Readiness Potential, which measures hand-specific movement preparation. The latter finding is consistent with the conclusion that the LRP always started after the conscious decision to move. We conclude that even though activity related to movement anticipation may be present before a conscious decision to move, the cortical preparation necessary for the movement to happen immediately may not start until after the conscious decision to move.
C-Reactive Protein and Coronary Heart Disease: All Said—Is Not It?

C-reactive protein (CRP) and coronary heart disease (CHD) have been the subject of intensive investigations over the last decades. Epidemiological studies have shown an association between moderately elevated CRP levels and incident CHD whereas genetic studies have shown that polymorphisms associated with elevated CRP levels do not increase the risk of ischemic vascular disease, suggesting that CRP might be a bystander rather than a causal factor in the progress of atherosclerosis. Beside all those epidemiological and genetic studies, the experimental investigations also try to reveal the role of CRP in the progress of atherosclerosis. This review will highlight the complex results of genomic, epidemiological, and experimental studies on CRP and will show why further studies investigating the relationship between CRP and atherosclerosis might be needed.
DNA methylation profiling in breast cancer discordant identical twins identifies DOK7 as novel epigenetic biomarker

Using whole blood from 15 twin pairs discordant for breast cancer and high-resolution (450K) DNA methylation analysis, we identified 403 differentially methylated CpG sites including known and novel potential breast cancer genes. Confirming the results in an independent validation cohort of 21 twin pairs determined the docking protein DOK7 as a candidate for blood-based cancer diagnosis. DNA hypermethylation of the promoter region was also seen in primary breast cancer tissues and cancer cell lines. Hypermethylation of DOK7 occurs years before tumor diagnosis, suggesting a role as a powerful epigenetic blood-based biomarker as well as providing insights into breast cancer pathogenesis.