Miracle-dz/UniFAR-FTUs huggingface dataset:
Towards an Integrated Resource Management Framework: A Challenge for the Future Multimedia Services

Being able to manage the entire chain of resources involved in a communication session is a need for the purposes of future multimedia services, because many of the bottlenecks in communications will move from the network side to the end-systems or third-party equipments. Indeed the quality delivered by multimedia applications depends highly upon the capabilities of the end-systems. The advantages of managing all the resources involved in communication sessions are twofold. First, a correct and more precise diagnosis about QoS bottlenecks (resources not fulfilling their part of QoS) is then possible. Second, the way the service stakeholders are granting their commitment can be assessed, since QoS bottlenecks will be more precisely located. This need of managing all the resources within a communication session together with the advantages thereof define the concept of integrated resource management and constitute a key for providing the future services. In this paper, we analyze these services and review outcomes of the different areas that are likely to help bring up those services.
A Novel Role for an ECF Sigma Factor in Fatty Acid Biosynthesis and Membrane Fluidity in Pseudomonas aeruginosa

Extracytoplasmic function (ECF) sigma factors are members of cell-surface signaling systems, abundant in the opportunistic pathogen Pseudomonas aeruginosa. Twenty genes coding for ECF sigma factors are present in P. aeruginosa sequenced genomes, most of them being part of TonB systems related to iron uptake. In this work, poorly characterized sigma factors were overexpressed in strain PA14, in an attempt to understand their role in the bacterium´s physiology. Cultures overexpressing SigX displayed a biphasic growth curve, reaching stationary phase earlier than the control strain, followed by subsequent growth resumption. During the first stationary phase, most cells swell and die, but the remaining cells return to the wild type morphology and proceed to a second exponential growth. This is not due to compensatory mutations, since cells recovered from late time points and diluted into fresh medium repeated this behavior. Swollen cells have a more fluid membrane and contain higher amounts of shorter chain fatty acids. A proteomic analysis was performed to identify differentially expressed proteins due to overexpression of sigX, revealing the induction of several fatty acid synthesis (FAS) enzymes. Using qRT-PCR, we showed that at least one isoform from each of the FAS pathway enzymes were upregulated at the mRNA level in the SigX overexpressing strain thus pointing to a role for this ECF sigma factor in the FAS regulation in P. aeruginosa.
Life prediction modeling of bus capacitors in AC variable-frequency drives

Aluminum electrolytic capacitors are the leading choice for ac variable-frequency drive (VFD) bus filters. Predicting the expected life of these components in this application is complicated by four factors. First, the electrical impedance of aluminum electrolytic capacitors is nonlinear with both frequency and temperature. Second, motor drives produce a spectrally rich ripple current waveform that makes energy loss difficult to compute. Third, the heat transfer characteristic of capacitor banks is dependent on design geometry. Fourth, the expected life of aluminum electrolytic capacitors is extremely sensitive to operating temperature. This paper describes a method for predicting bus capacitor life that addresses these problems by using a multiple component model for capacitor impedance, a motor drive simulation to create ripple current waveforms, a heat transfer model based on bank geometry, and a capacitor life model derived from the device physics of failure. An example is given showing the effect of ac line impedance on the relative expected life.
Preferential localization of polyribosomes under the base of dendritic spines in granule cells of the dentate gyrus

Electron microscopic studies of the dentate gyrus of the rat have revealed an apparent association between polyribosomes and dendritic spines. The present study was designed to elucidate the nature of this association. Our qualitative observations revealed that polyribosomes appeared primarily in two locations within the dendrite: (1) beneath the base of identified spines just subjacent to the intersection of the spine neck with the main dendritic shaft and (2) beneath mounds in the dendritic membrane which had the appearance of the base of a spine which extended out of the plane of section. To quantitatively define the nature of the apparent association, we attempted to determine (1) the proportion of spines with associated polyribosomes and (2) the proportion of the polyribosomes within dendrites which are associated with spine bases. Evaluation of profiles which were identifiable as spine neck-dendritic shaft intersections in a single section revealed that an average of 12.2% had associated polyribosomes. A serial section analysis revealed a somewhat higher incidence, however. Of a collection of 34 through-sectioned spines, 29% had polyribosomes which were revealed in one or more of the sections comprising the series. To evaluate what proportion of polyribosomes within the dendrite was associated with spines, we evaluated a series of photographs covering approximately 1250 micrometer2 of the dentate molecular layer from five animals, identifying all polyribosomes within dendrites and scoring their location as being (1) under spines, (2) under mounds, or (3) other. An average of 9.6% of the polyribosomes were found under processes identifiable as spine neck-dendritic shaft intersections, while 71.4% of the polyribosomes were found under mounds. Only 19% were not obviously associated with spines or mounds. Spine bases and mounds comprise only 3 of 35%, respectively, of the outline of dendritic profiles, however, indicating that the high incidence of polyribosomes under these elements cannot be accounted for by chance. To attempt to determine whether the mounds represent the base of dendritic spines, 68 mounds in 21 dentritic profiles were selected from the middle of the series of 20 serial sections. Ninetine of these mounds (28%) were continuous with an identified spine, and an additional 31% were continuous with thin processes of the size and appearance of spine necks. Thus, most of the mounds probably do represent the base of spines which extend out of the plane of a single section.
8D display: a relightable glasses-free 3D display

Imagine a display that behaves like a window. Glancing through it, viewers perceive a virtual 3D scene with correct parallax, without the need to wear glasses or track the user. Light that passes through the display correctly illuminates the virtual scene. While researchers have considered such displays, or prototyped subsets of these capabilities, we contribute a new, interactive, relightable, glasses-free 3D display. By simultaneously capturing a 4D light field, and displaying a 4D light field, we are able to realistically modulate the incident light on rendered content. We present our optical design, and GPU pipeline. Beyond mimicking the physical appearance of objects under natural lighting, an 8D display can create arbitrary directional illumination patterns and record their interaction with physical objects. Our hardware points the way towards novel 3D interfaces, in which users interact with digital content using light widgets, physical objects, and gesture.
The defective conditional in mathematics

This article focuses on defective conditionals – namely indicative conditionals whose antecedents are false and whose truth-values therefore cannot be determined. The problem is to decide which formal connective can adequately represent this usage. Classical logic renders defective conditionals true whereas traditional mathematics dismisses them as irrelevant. This difference in treatment entails that, at the propositional level, classical logic validates some sentences that are intuitively false in plane geometry. With two proofs, I show that the same flaw is shared by a family of trivalent logics. I go on to examine the strict conditional and its derivatives. This family is the only one to avoid the faulty inference but it does so without addressing the status of the truth-value assigned to defective conditionals.
A study on the design and effectiveness of tactile feedback in driving simulator

Driving simulations are widely used to send navigational and warning information to help drivers navigate safely. The traditional approaches are to use visual and auditory channels which can cause sensory overloading. Haptic has major safety implication on reducing visual and auditory overloading in driving, and since seats are the largest area in touch with the driver's body, it is a sensible choice to consider for delivering the haptic information. This paper presents the design and development of an optimal vibrotactile seat to provide a high level of satisfaction to the driver. The seat was designed by experimenting with different design parameters such as the intensity, position, and the rhythm of vibrations. Experiments were conducted to investigate the proper values of voltage, frequency, and amplitude that are specifically related to the developed haptic seat. A driving simulation was developed to evaluate the haptic seat for vehicle navigation in an immersive virtual driving simulator. Results showed that users preferred the vibrations to the audio feedback.
Partial periodic patterns mining with multiple minimum supports

Partial periodic patterns are commonly seen in real-world applications. Most of the previous approaches set a single minimum support threshold for all the events in a sequence. However using only one minimum support for all events in an event sequence to assume they have similar frequencies is not easy to happen in real-life applications. In this paper, we propose an algorithm which applies the projection-based mechanism and specifies multiple minimum supports to effectively discover appropriate partial periodic patterns. Finally, the experimental result shows the good performance of the proposed approach.
Greek letters in random staircase tableaux

In this paper we study a relatively new combinatorial object called staircase tableaux. Staircase tableaux were introduced by Corteel and Williams in the connection with Asymmetric Exclusion Process and has since found interesting connections with Askey–Wilson polynomials. We develop a probabilistic approach that allows us to analyze several parameters of a randomly chosen staircase tableau of a given size. In particular, we obtain limiting distributions for statistics associated with appearances of Greek letters in staircase tableaux. © 2012 Wiley Periodicals, Inc. Random Struct. Alg. , 2012
Real Homology Cohomology and Harmonic Cochains, Least Squares, and Diagonal Dominance

We give new algorithms for computing basis cochains for real-valued homology, cohomology, and harmonic cochains on manifold simplicial complexes. We discuss only planar, surface, and solid meshes. Our algorithms are based on a least squares formulation. Previous methods for computing homology and cohomology have relied on persistence algorithm or Smith normal form, both of which have cubic complexity in worst case. Our algorithm is a Hodge decomposition using only the connectivity information of the mesh. This is a pair of least squares problems and thus can be solved using very reliable, efficient, classical iterative linear solvers which work in spite of nontrivial kernels, have guarantees on iteration counts, and work without forming the full linear system. Moreover, as we showed recently elsewhere, the corresponding normal equation matrices are diagonally dominant, allowing the use of recent developments in very fast solvers for such. For harmonic cochains, one previous approach has been to find eigenvectors corresponding to zero eigenvalue of the Laplace-deRham operator. In another approach, earlier methods have required the solution of all lower dimensional problems. We find harmonic cochains by solving a single weighted least squares problem. Our method does not use any inverse Hodge star matrices, since these can be dense if Whitney forms are used. We also show diagonal dominance in certain cases depending on geometric properties of the mesh. Finally, we prove a discrete version of the HodgedeRham theorem relating cohomology and harmonic cochains.
Uncertainty Reasoning in Description Logics: A Generic Approach

Description Logics (DLs) are gaining more popularity as the foundation of ontology languages for the Semantic Web. As most information in real life is imperfect, there has been an increasing interest recently in extending the expressive power of DLs with uncertainty, for which a number of frameworks have been proposed. In this paper, we introduce an extension of DL which unifies and/or generalizes a number of existing approaches for DLs with uncertainty. For this, we first provide a classification of existing frameworks for DLs with uncertainty on the basis of their underlying certainty formalisms. Using this as a basis, we introduce a generic framework for DL with uncertainty by extending components of the DL framework, i.e., the description language, the knowledge base, and the reasoning services.
Hardware accelerator IP-core for wireless 802.16 MAC

In IEEE 802.16 standard, the performance of the subscriber station (SS) MAC has to meet the timing constraints for the uplink and downlink transmissions. This requirement implies hardware acceleration of some protocol components through a precise hardware-software partitioning. In this paper, we first model the behavior of the system through high level specification and description language (SDL). After automatic translation of the SDL model into a true C model, a SoPC platform is used for prototype implementation. Analysis and HW/SW partitioning of the generated model is performed to meet 75 Mbps throughput required for OFDM-PHY. The proposed hardware accelerator in this paper has been implemented using a 0.13 mum CMOS technology in order to perform more detailed analysis on the performance of design which is targeted for ASIC applications. Analysis results show efficiency of our proposed design in terms of area and timing while achieving the required throughput on a low-cost embedded-processor based platform
Perception of gaze direction for situated interaction

Accurate human perception of robots' gaze direction is crucial for the design of a natural and fluent situated multimodal face-to-face interaction between humans and machines. In this paper, we present an experiment targeted at quantifying the effects of different gaze cues synthesized using the Furhat back-projected robot head, on the accuracy of perceived spatial direction of gaze by humans using 18 test subjects. The study first quantifies the accuracy of the perceived gaze direction in a human-human setup, and compares that to the use of synthesized gaze movements in different conditions: viewing the robot eyes frontal or at a 45 degrees angle side view. We also study the effect of 3D gaze by controlling both eyes to indicate the depth of the focal point (vergence), the use of gaze or head pose, and the use of static or dynamic eyelids. The findings of the study are highly relevant to the design and control of robots and animated agents in situated face-to-face interaction.
Provably Secure Constant Round Contributory Group Key Agreement in Dynamic Setting

In this paper, we present and analyze a variant of Burmester-Desmedt group key agreement protocol (BD) and enhance it to dynamic setting where a set of users can leave or join the group at any time during protocol execution with updated keys. In contrast to BD protocol, let us refer to our protocol as DB protocol. Although the DB protocol is similar to BD protocol, there are subtle differences between them: 1) Key computation in DB protocol is different and simpler than in BD protocol with same complexity of BD protocol; 2) Number of rounds required in our authenticated DB protocol is one less than that in authenticated BD protocol introduced by Katz-Yung; 3) DB protocol is more flexible than BD protocol in the sense that DB protocol is dynamic. The reusability of user's precomputed data in previous session enables the join and leave algorithms of our DB protocol to reduce most user's computation complexities which can be useful in real life applications; and 4) DB protocol has the ability to detect the presence of corrupted group members, although one can not detect who among the group members are behaving improperly.
Classification of Superconformal Algebras with Quadratic Non-Linearity

A unified treatment of both superconformal and quasisuperconformal algebras with quadratic non-linearity is given. General formulas describing their structure are found by solving the Jacobi identities. A complete classification of quasisuperconformal and ${\bf Z}_2\times{\bf Z}_2$-graded algebras are obtained and in addition to the previously known cases five exceotional quasisuperconformal algebras and a series of ${\bf Z}_2\times{\bf Z}_2$-superconformal algebras containing affine $\widehat{sp}_2\otimes\widehat{osp}(N|2M)$ are constructed.
The Support System of Mother in Children’s First Language Acquisition: A Case Study of Three Videos Uploaded in Youtube

Abstrak Sang anak biasanya mendapat kata pertama mereka dalam usia satu hingga tiga tahun. Banyak orang percaya bahwa di balik sukses seorang anak dalam mendapatkan kata pertama adalah ibunya. Tetapi, banyak diantara mereka tidak tahu seberapa jauh peran sang ibu dalam membantu sang anak meraih kata pertama. Tujuan dari studi ini adalah untuk mengetahui secara pasti peran seorang ibu dan efeknya kepada dalam meraih bahasa pertamanya. Studi ini menggunakan qualitatif deskriptif untuk melihat sejauh mana ikut berperannya seorang ibu dan juga perkembangan dari sang anak ketika terlibat dalam sebuah percakapan dengan ibunya. Setelah melakukan identifikasi di percakapan dan menklasifikasi usia dari sang anak dengan observasi yang dalam dan menggunakan metode tingkatan pemerolehan bahasa pertama dari Crystal, penulis beranggapan bahwa sang anak mampu memperoleh kata pertamanya dari kebiasaan. Sedangkan sang ibu hanya memberikan support dari sang anak dan melihat sejauh mana perkembangan yang dibuat oleh sang anak dalam percakapan. Jadi, dalam kasus ini penulis beranggapan bahwa sang ibu merupakan sistem pendukung pemerolehan bahasa Kata kunci: Peran, Pemerolehan bahasa, Ibu, Anak Abstract The child usually acquires their first word at age of one until three years old. Many people believe that behind the child’s success in acquire their first word is his or her mother. But, most people did not know how far does the role of mother to help the child in acquire their first word. The purpose of this study is to know what does the exact role of the mother and also the effect to her child in acquire their first word. This study is uses descriptive qualitative to see how far does the mother’s involvement and also the development of the child in his or her conversation with the mother. after identified the conversation with their mother and classified the age of children by deep observation and method from crystal’s stages of language acquisition, the writer found that the child can develop in acquire new word in behaviour way, the mother then can only provide the support for their child and see the improvement that the child has make. So, in this case the writer concludes that the mother can be describe as LASS (Language Acquisition Support System). Keywords: Role, First Language Acqusition, Mother, Child
Virus-induced ER stress and the unfolded protein response

The accumulation of unfolded or misfolded proteins in the lumen of the endoplasmic reticulum (ER) results in ER stress that triggers cytoprotective signaling pathways, termed the unfolded protein response (UPR), to restore and maintain homeostasis in the ER or to induce apoptosis if ER stress remains unmitigated. The UPR signaling network encompasses three core elements, i.e., PKR-like ER kinase (PERK), activating transcription factor 6 (ATF6), and inositol-requiring protein-1 (IRE1). Activation of these three branch pathways of the UPR leads to the translation arrest and degradation of misfolded proteins, the expression of ER molecular chaperones, and the expansion of the ER membrane to decrease the load of proteins and increase the protein-folding capacity in the ER. Recently, the essential roles of the UPR have been implicated in a number of mammalian diseases, particularly viral diseases. In virus-infected cells, the cellular translation machinery is hijacked by the infecting virus to produce large amounts of viral proteins, which inevitably perturbs ER homeostasis and causes ER stress. This review summarizes current knowledge about the UPR signaling pathways, highlights two identified UPR pathways in plants, and discuss progress in elucidating the UPR in virus-infected cells and its functional roles in viral infection.
Divergence between individual perceptions and objective indicators of tail risks: Evidence from floodplain residents in New York City

This study provides the first comprehensive analysis of individual perceptions of tail risks. It focuses not only on the probability, as has been studied by Nicholas Barberis and others, but also on anticipation of damage. We examine how those perceptions relate to experts’ estimates and publicly available risk information. Behavioural factors—availability bias, threshold models of choice, worry and trust—are found to have a significant impact on risk perceptions. The probability of tail events is overestimated, which is consistent with probability weighting in prospect theory. Potential damage is underestimated, one reason why individuals do not invest in protective measures.
Simulated 3 D Biped Walking with an Evolution-Strategy Tuned Spiking Neural Network

This paper presents the results of experiments in applying a spiking neural network to control the locomotion of a simulated biped robot. The neural model used in simulations was developed to allow for an analytic solution to a neuron’s fire time, while maintaining a non-instant post-synaptic potential rise time. The synaptic weights and delays were tuned using an evolution-strategy. Simulation experiments demonstrate that within about seven thousand generations the biped is able to acquire a dynamic walk which allows it to walk upright for several metres.