Miracle-dz/UniFAR-FTUs huggingface dataset:
A Real Time Vision-Based Hand Gesture Interaction

Moving beyond mouse and keyboard, the evolution of human-computer interaction (HCI) has been an interest research in recent years which witnessed the development from text-based like using a keyboard to graphic user interface (GUI) based on a mouse, from cumbersome data gloves and tracking devices to visual-based computer application. One of the interest fields is by using hand gestures to interact with computer. However, the complexity of a hand set a lot of challenges to be tracked. In real-time, the application requires high accurate detection and recognition. In additional the real and clutter environments have a big impact on recognition process because it included with irrelevant information from the application point of view. In this paper, a real time vision based hand gesture interaction prototype was proposed. Currently a prototype has built for controlling the desktop cursor and concerned the tasks involving in navigation the desktop cursor by using hand gesture input modality
Emergence of equilibria from individual strategies in online content diffusion

Social scientists have observed that human behavior in society can often be modeled as corresponding to a threshold type policy. A new behavior would propagate by a procedure in which an individual adopts the new behavior if the fraction of his neighbors or friends having adopted such behavior exceeds some threshold. In this paper we study the question of whether the emergence of threshold policies may be modeled as a result of some rational process which would describe the behavior of non-cooperative rational members of some social network. We focus on situations in which individuals take the decision whether to access or not some content, based on the number of views that the content has. Our analysis aims at understanding not only the behavior of individuals, but also the way in which information about the quality of a given content can be deduced from view counts when only part of the viewers that access the content are informed about its quality. In this paper we present a game formulation for the behavior of individuals using a meanfield model: the number of individuals is approximated by a continuum of atomless players and for which the Wardrop equilibrium is the solution concept. We derive conditions on the problem's parameters that result indeed in the emergence of threshold equilibria policies. But we also identify some parameters in which other structures are obtained for the equilibrium behavior of individuals.
A mouse model of familial oligoasthenoteratozoospermia.

BACKGROUND Hrb is an HIV-1 Rev-binding/interacting protein and is a cofactor for Rev export pathway. Hrb interacts with Eps15 homology (EH) domain-containing proteins and is a component of EH network and functions in vesicle sorting. Earlier, we reported that Hrb-deficient male mice are infertile and that they show oligozoospermia. Their sperm lack acrosomes and present globozoospermia. The aim of this study was: (i) to investigate the additional defects in spermatogenesis in Hrb-deficient mice; and (ii) to investigate the effect of acrosomelessness on spermatid differentiation in Hrb-deficient mice. METHODS Hrb(-/-) testes, epididymides, spermatids and sperm were analyzed by histology and electron microscopy. Centrioles were analyzed in spermatids and sperm by indirect immunofluorescence technique. RESULTS Hrb(-/-) male mice exhibited multiple anomalies during meiosis and spermiogenesis that produced developmentally impaired sperm with unshaped or deformed nuclei, loss in cell polarity, intracellular flagellar coiling, multinucleation, supernumerary centrioles and multiflagellation. A total of 13.0% Hrb(-/-) sperm showed macrocephaly. The Hrb(-/-) sperm exhibited variation in head size and shape, disarranged cellular organelles, nuclear and cytoplasmic vacuolization, mitochondrial loss or scattering and no forward motility. CONCLUSIONS These aberrations, in Hrb(-/-) mouse spermatids and sperm, are reminiscent of human familial male infertility with oligoasthenoteratozoospermia syndrome. The Hrb-deficient mouse may be useful in understanding familial oligoasthenoteratozoospermia syndrome.
Quaternionic Kahler spaces with large toric symmetry

We consider a general 4n-dimensional quaternionic Kahler geometry with a free action of the torus T^(n+1). The toric action lifts onto the Swann bundle of the quaternionic Kahler space to a tri-holomorphic action that commutes with the standard H* action on the bundle. By matching Pedersen and Poon's generalized Gibbons-Hawking Ansatz description of the total space with the Swann picture we extract the local geometry of the quaternionic Kahler base. Specifically, we obtain explicit expressions for the quaternionic Kahler metric and Sp(1) connection in terms of a set of reduced Higgs fields and connection 1-forms that satisfy a reduced Bogomol'nyi-type equation. We find, moreover, that these Higgs fields can be derived from a single function V satisfying a system of linear second-order partial differential constraints. In four dimensions, corresponding to the case of self-dual Einstein manifolds with two commuting Killing vector fields, our formulas coincide with those obtained through a different approach by Calderbank and Pedersen. Finally, we show how to construct explicit solutions to the reduced Bogomol'nyi and V equations by means of Lindstrom and Rocek's generalized Legendre transform construction for a large class of quaternionic Kahler manifolds related to the c-map.
A modified reconstruction algorithm for compressed sensing with least square residual

L1-norm based solver has been successfully used for sparse signal reconstruction in compressed sensing. In the paper, we propose a modified method to boost the decoding performance with least-square residual for L1 algorithms. A further performance improvement is obtained by applying iteratively reweighted L1 minimization for sparsity pattern detection. Numerical experiments show that both the proposed methods lead to a better sparsity-measurement tradeoff than their benchmark algorithms.
Personality, Affectivity, and Alexithymia in Scuba Diving: Two Types of Risk Taking

Objectives for this study were, first, to describe individual differences in risk taking among scuba divers. Differences were examined on personality dimensions and psycho-affective variables, including positive and negative affect, as well as alexithymia. In addition, the study examined contributors to two types of behavior associated with scuba diving—deliberate risk taking and controlled participation in a high-risk sport (non-risk-taking). A cross-sectional design was used, and 131 participants were assessed on extraversion-neuroticism, affectivity, and alexithymia. The broad dimensions of personality and affectivity explained risk taking among divers. Alexithymia differentially predicted two types of risktaking behavior (direct or short-term and indirect or long-term) and was associated significantly with short-term risk-taking behavior.
Immature Responses to GABA in Fragile X Neurons Derived from Human Embryonic Stem Cells

Fragile X Syndrome (FXS) is the most common form of inherited cognitive disability. However, functional deficiencies in FX neurons have been described so far almost exclusively in animal models. In a recent study we found several functional deficits in FX neurons differentiated in-vitro from human embryonic stem cells (hESCs), including their inability to fire repetitive action potentials, and their lack of synaptic activity. Here, we investigated the responses of such neurons to pulse application of the neurotransmitter GABA. We found two distinct types of responses to GABA and sensitivity to the GABA-A receptor antagonist bicuculline; type 1 (mature) characterized by non-desensitized responses to GABA as well as a high sensitivity to bicuculline, and type 2 (immature) which are desensitized to GABA and insensitive to bicuculline. Type 1 responses were age-dependent and dominant in mature WT neurons. In contrast, FX neurons expressed primarily type 2 phenotype. Expression analysis of GABA-A receptor subunits demonstrated that this bias in human FX neurons was associated with a significant alteration in the expression pattern of the GABA-A receptor subunits α2 and β2. Our results indicate that FMRP may play a role in the development of the GABAergic synapse during neurogenesis. This is the first demonstration of the lack of a mature response to GABA in human FX neurons and may explain the inappropriate synaptic functions in FXS.
PERTURBATIVE SOLUTIONS TO THE EXTENDED CONSTANT SCALAR CURVATURE EQUATIONS ON ASYMPTOTICALLY HYPERBOLIC MANIFOLDS

The extended constant scalar curvature equations is a particular case of the conformal contraint equations introduced by H. Friedrich. It was first studied by A. Butscher in an asymptotically flat setting. We prove the local existence of solutions to the extended constant scalar curvature equations near some asymptotically hyperbolic Einstein metrics. This gives a new local construction of asymptotically hyperbolic metrics with constant scalar curvature.
Performance Study of Parallel Shortest Path Algorithms: Characteristics of Good Decompositions

Shortest path algorithms are a key component of many applications such as VLSI and transportation algorithms. The solution for shortest paths is very computationally intensive; therefore, using parallel processing is advantageous. The performance of parallel shortest path depends on how the data is partitioned among the processors. In this paper, we investigate how the decomposition aaects performance and identify characteristics of a good decomposition. We consider ve decomposition characteristics: number of boundary nodes, number of interfaces, number of boundary nodes per interface, subnetwork connectivity and subnetwork diameter. Through an extensive statistical analysis we determine that a good decomposition has a small number of interfaces and connected components and a small diameter, but a large number of boundary nodes per interface. Furthermore, the eeectiveness of a decomposition depends on all the characteristics, not on just one.
Massachusetts Institute of Technology Department of Economics Working Paper Series Quantile Regression under Misspecification with an Application to the Libraries Quantile Regression under Misspecification, with an Application Wage Structure

Quantile regression (QR) fits a linear model for conditional quantiles, just as ordinary least squares (OLS) fits a linear model for conditional means. An attractive feature of OLS is that it gives the minimum mean square error linear approximation to the conditional expectation function even when the linear model is misspecified. Empirical research using quantile regression with discrete covariates suggests that QR may have a similar property, but the exact nature of the linear approximation has remained elusive. In this paper, we show that QR can be interpreted as minimizing a weighted mean-squared error loss function for specification error. The weighting function is an average density of the dependent variable near the true conditional quantile. The weighted least squares interpretation of QR is used to derive an omitted variables bias formula and a partial quantile correlation concept, similar to the relationship between partial correlation and OLS. We also derive general asymptotic results for QR processes allowing for misspecification of the conditional quantile function, extending earlier results from a single quantile to the entire process. The approximation properties of QR are illustrated through an analysis of the wage structure and residual inequality in US census data for 1980, 1990, and 2000. The results suggest continued residual inequality growth in the 1990s, primarily in the upper half of the wage distribution and for college graduates.
Demonstration of PMD Compensation by LDPC-Coded Turbo Equalization and Channel Capacity Loss Characterization Due to PMD and Quantization

Polarization-mode dispersion (PMD) compensation by low-density parity-check (LDPC) coded turbo equalization is experimentally demonstrated for a nonreturn-to-zero (NRZ) system operating at 10 Gb/s. This technique provides significant improvement of bit-error rate compared to the optimum threshold receiver. The channel capacity loss due to PMD and quantization is studied as well. It was found that the proposed PMD turbo equalizer is about 1.5 dB away from the theoretical limit.
Mass segregation of different populations inside the cluster NGC 6101

We have used ESO telescopes at La Silla and the Hubble Space Telescope (HST) in order to obtain accurate B , V , I CCD photometry for the stars located within 200″ ($\simeq$2 half-mass radii, $r_{\rm h} = 1.71\arcmin$) from the center of the cluster NGC 6101. Color-Magnitude Diagrams (CMDs) extending from the red-giant tip to about 5 magnitudes below the main-sequence turnoff MSTO ($V = 20.05 \pm 0.05$) have been constructed. The following results have been obtained from the analysis of the CMDs: a) The overall morphology of the main branches confirms previous results from the literature, in particular the existence of a sizeable population of 73 "blue stragglers" (BSS), which had been already partly detected (27). They are considerably more concentrated than either the subgiant branch (SGB) or the main sequence (MS) stars, and have the same spatial distribution as the horizontal branch (HB) stars (84% probability from K-S test). An hypothesis on the possible BSS progeny is also presented. b) The HB is narrow and the bulk of stars is blue, as expected for a typical metal-poor globular cluster. c) The derived magnitudes for the HB and the MSTO, $V_{\rm ZAHB} = 16.59 \pm 0.10$, $V_{\rm TO} = 20.05 \pm 0.05$, coupled with the values $E(B-V) = 0.1$, ${\rm [Fe/H]} = -1.80$, $Y = 0.23$ yield a distance modulus $(m-M)_{V} = 16.23$ and an age similar to other "old" metal-poor globular clusters. In particular, from the comparison with theoretical isochrones, we derive for this cluster an age of 13 Gyrs. d) By using the large statistical sample of Red Giant Branch (RGB) stars, we detected with high accuracy the position of the bump in the RGB luminosity function. This observational feature has been compared with theoretical prescriptions, yielding a good agreement within the current theoretical and observational uncertainties.
Generalized Givens Transformation and its Application ∗

Abstract A new transformation, a generalization of the Givens rotation, is introduced here. Its properties are studied. As application of the new transformation, we discuss how to employ it to tridiagonalize matrices similarly, without requiring an intermediate transformation to Hessenberg form. This approach to tridiagonalization is cheaper than usual strategies, specially for sparse case in the absence of breakdown. Some implementation issues, including partial pivoting technique, are discussed too. Numerical examples illustrate that the new tridiagonalization works quite well whenever it has no breakdown.
A Case Study of Analyzing Logs of LMS in Flipped Classroom

This paper shows a case study of analyzing the log of a learning management system (LMS) in a flipped classroom. We investigate the relation between the preparation of students before class and their test scores through the LMS log. The teacher of a course in the case study gives the students a document and a quiz about the content of the next class through the LMS. Then, a simple test is conducted in the first 10 minutes of the class to evaluate the students' understanding of the content. We focus on the number of times that the students read the document and took the quiz. We also consider the time spent to take the quiz. We construct a decision tree from the log and the test scores to classify the students. We found some patterns from the tree to characterize students according to score categories, although the tree did not classify them perfectly.
Treating Words as Data with Error: Uncertainty in Text Statements of Policy Positions

Political text offers extraordinary potential as a source of information about the policy positions of political actors. Despite recent advances in computational text analysis, human interpretative coding of text remains an important source of text-based data, ultimately required to validate more automatic techniques. The profession’s main source of cross-national, time-seriesdataonpartypolicypositionscomesfromthehumaninterpretativecodingofpartymanifestosbytheComparative Manifesto Project (CMP). Despite widespread use of these data, the uncertainty associated with each point estimate has neverbeenavailable,underminingthevalueofthedatasetasascientificresource.Weproposearemedy. First,wecharacterize processes by which CMP data are generated. These include inherently stochastic processes of text authorship, as well as of the parsing and coding of observed text by humans. Second, we simulate these error-generating processes by bootstrapping analysesofcodedquasi-sentences.Thisallowsustoestimatepreciselevelsofnonsystematicerrorforeverycategoryandscale reported by the CMP for its entire set of 3,000-plus manifestos. Using our estimates of these errors, we show how to correct biased inferences, in recent prominently published work, derived from statistical analyses of error-contaminated CMP data.
Low-level Pedestrian Detection by means of Visible and Far Infra-red Tetra-vision

This article presents a tetra-vision (4 cameras) system for the detection of pedestrians by the means of the simultaneous use of one far infra-red and one visible cameras stereo pairs. The main idea is to exploit both the advantages of far infra-red and visible cameras trying at the same time to benefit from the use of each system. Initially, the two stereo flows are independently processed, then the results are fused together. The final result of this low-level processing is a list of obstacles that have a shape and a size compatible with the presence of a potential pedestrian. In addition, the system is able to remove the background from the detected obstacles to simplify a possible further high level processing. The developed system has been installed on an experimental vehicle and preliminarily tested in different situations
The Type and the Position of HNF1A Mutation Modulate Age at Diagnosis of Diabetes in Patients with Maturity-Onset Diabetes of the Young (MODY)-3

OBJECTIVE—The clinical expression of maturity-onset diabetes of the young (MODY)-3 is highly variable. This may be due to environmental and/or genetic factors, including molecular characteristics of the hepatocyte nuclear factor 1-α (HNF1A) gene mutation. RESEARCH DESIGN AND METHODS—We analyzed the mutations identified in 356 unrelated MODY3 patients, including 118 novel mutations, and searched for correlations between the genotype and age at diagnosis of diabetes. RESULTS—Missense mutations prevailed in the dimerization and DNA-binding domains (74%), while truncating mutations were predominant in the transactivation domain (62%). The majority (83%) of the mutations were located in exons 1- 6, thus affecting the three HNF1A isoforms. Age at diagnosis of diabetes was lower in patients with truncating mutations than in those with missense mutations (18 vs. 22 years, P = 0.005). Missense mutations affecting the dimerization/DNA-binding domains were associated with a lower age at diagnosis than those affecting the transactivation domain (20 vs. 30 years, P = 10−4). Patients with missense mutations affecting the three isoforms were younger at diagnosis than those with missense mutations involving one or two isoforms (P = 0.03). CONCLUSIONS—These data show that part of the variability of the clinical expression in MODY3 patients may be explained by the type and the location of HNF1A mutations. These findings should be considered in studies for the search of additional modifier genetic factors.
biosigner : A new method for signature discovery from omics data

3 Hands-on 2 3.1 Loading . 2 3.2 Molecular signatures . 4 3.3 Predictions . 8 3.4 Working on ExpressionSet omics objects from bioconductor . 10
Modelisation of Raindrops Based on Declivity Principle

Performances of driver assistance systems depend on weather conditions: when the later deteriorate, for instance due to fog or rain, the performances deteriorate too. We hereby present a new approach of modelling raindrops on the windshield using the declivity principle applied in different plans. Our goal is to define a profile of raindrops by analyzing intensities behavior in different planes - horizontal, vertical, left-diagonal, and right-diagonal - based on the declivity principle's properties.
Beyond Modes: a New Typology of ISD Control

This study focuses on the role of information systems development (ISD) control as a means to better understand the underlying elements of ISD methodologies. Based on Ackoff’s general systems theory, we propose a new typology of ISD control that moves beyond the de facto standard in ISD research: control modes. Through twenty-six interviews at four organizations, we find that our typology aids in distinguishing between control dimensions within structured and flexible development to a greater extent than control modes would allow. Our paper also discusses possible reasons why the benefits of agile development may become diluted in organizations where both flexible and structured methods are employed. This work contributes to the advancement of ISD control theory and provides useful insights for practitioners responsible for the governance of ISD projects.
PAM: Precise Receive Buffer Assignment Method in Transport Protocol for Concurrent Multipath Transfer

Without proper receiving buffer assignment, Concurrent Multipath Transfer (CMT) could result in either not being able to achieve aggregate bandwidth or being a waste of memory resources. This paper analyses buffer requirement for CMT and find that receive buffer requirement is linearly correlated to ratio of round trip time of different path. Based on buffer requirement analysis, this paper proposes PAM, a precise receive buffer size assignment method. The simulation results verified the linear correlation and show that the PAM can effectively aggregate the bandwidth of multipath while making efficient use of memory resource.
PHOTOREALISTIC OBJECT RECONSTRUCTION USING VOXEL COLORING AND ADJUSTED IMAGE ORIENTATIONS

In this paper we present a voxel-based 3D reconstruction technique to compute photo realistic volume models from multiple color images. Visibility information is the key requirement for photorealistic reconstructions. In order to get the full visibility information item buffers are created for each image. In the item buffers each pixel is assigned the ID of the closest voxel it corresponds to. All scene points are projected into every image and if the ID stored in the pixel is the same as the voxel’s ID, they are checked for photo consistency. This way only visible (non-occluded) voxels are considered. Voxels are labelled either opaque and assigned a color value or transparent and carved away until no non-photo consistent voxel exists. Due to the missing of control points on the object, the images undergo a process of relative orientation in a free network using manually measured tie points. With these image orientations and a previously calibrated camera, the scene points are projected in a high accurate way, minimizing projection errors. This way objects are modelled where the application of control points is either impossible (e.g. in microscopic images) or uneconomical. Experimental results show that the combination of photogrammetric methods and shape from photo consistency techniques yield more accurate results since camera errors are taken into consideration and images are assigned individual orientation data.