Miracle-dz/UniFAR-FTUs huggingface dataset:
Design and Implementation of Wireless Video Transmission System

A real-time H.264 video stream transmission system which based on standard RFC is designed and implemented in this paper. In order to overcome the adverse factors as high bit error and low bandwidth through the wireless channel, this paper proposes UDP / RTP virtual links that under the CDMA2000 EVDO to ensure real-time transmission. At the meantime, in order to make up the lack of AIMD algorithm, this paper using Gilbert channel model to estimate the effective bandwidth, and adjust the sending rate by predicting the bandwidth. Finally the hybrid network model and NAT penetration are used to achieve the control network transparent. The results show that when the network congestion occurs, the system will automatically reduce the video frame rate to ensure real-time video transmission, since the RTCP feedback mechanism is added.
Compact Dual-Band T-Slot Antenna for 2.4/5 GHz Wireless Applications

In this paper, we present the investigations on a compact dual-band T-slot antenna for 2.4/5 GHz wireless applications. The antenna is composed of two orthogonal slots with a compact size of about 17 mm x 10 mm, which only occupies less than 4% of the ground plane (80 mm x 50 mm, area of a typical PC wireless card). In this way the antenna can be easily integrated in one circuit board with other electric circuits as a whole. To understand the characteristics of the proposed antenna, the influences of different geometric parameters on the antenna resonant frequency is investigated. It is shown by HFSS simulation that the proposed antenna can completely cover both 2.4/5 GHz bands with satisfactory radiation characteristics for 2.4/5 GHz indoor wireless applications.
Update on Maize Responses to Phosphorus Deficiency Phosphate Deprivation in Maize: Genetics and Genomics 1

Plants acquire phosphorus (P) from the soil in order to reach the intracellular concentrations necessary for growth and reproduction. To prevent P starvation, both monocotyledonous and dicotyledonous plants have evolved well-regulated systems for inorganic phosphate (Pi) scavenging, acquisition, and recycling. Phosphate starvation responses (PSR) in plants include release of organic acids and hydrolytic enzymes to scavenge soil Pi from organic and inorganic sources, metabolic modifications to bypass ATP requirements, recycling andmobilization of internal P resources, modifications of root system architecture to increase soil exploratory capacity, and, for many plant species, the establishment of symbiotic relations with arbuscular mycorrhizal fungi (Bucher, 2007). Maize (Zea mays) is one of the most widely cultivated crop plants, for both staple food and industrial usage, in tropical and temperate soils worldwide. Under cultivation, especially in acidic and alkaline soils, large quantities of P fertilizer are applied to maize fields in order to maximize yields. P fertilizers, however, are becoming increasingly costly owing to dwindling natural reserves of rock Pi and an increase in the costs of extracting what remains; it is projected that we have already moved beyond the point of peak production (Cordell et al., 2011) and that reserves will be exhausted before the end of the century (Khasawneh et al., 1986). Recent progress in maize genetics and genomics has furthered characterization of the molecular basis of maize PSR, with the potential to provide important information in the development of maize varieties with enhanced P use efficiency.
When does centrality matter? Scientific productivity and the moderating role of research specialization and cross‐community ties

The present study addresses the ongoing debate concerning academic scientific productivity. Specifically, given the increasing number of collaborations in academia and the crucial role networks play in knowledge creation, we investigate the extent to which building social capital within the academic community represents a valuable resource for a scientist’s knowledge-creation process. We measure the social capital in terms of structural position within the academic collaborative network. Furthermore, we analyse the extent to which an academic scientist’s research specialization and ties that cross-community boundaries act as moderators of the aforementioned relationship. Empirical results derived from an analysis of an Italian academic community from 2001 to 2008 suggest academic scientists that build social capital by occupying central positions in the community outperform their more isolated colleagues. However, scientific productivity declines beyond a certain threshold value of centrality, hence revealing the existence of an inverted U-shaped relationship. This relationship is negatively moderated by the extent to which an academic focuses research activities in few scientific knowledge domains, whereas it is positively moderated by the number of cross-community ties established.
Characterization of the Effects of Mutations in the Putative Branchpoint Sequence of Intron 4 on the Splicing within the Human Lecithin:cholesterol Acyltransferase Gene*

We have previously identified a point mutation (intervening sequence (IVS) 4: T → C) in the branchpoint consensus sequence of intron 4 of the lecithin:cholesterol acyltransferase (LCAT) gene in patients with fish-eye disease. To investigate the possible mechanisms responsible for the defective splicing, we made a series of mutations in the branchpoint sequence and expressed these mutants in HEK-293 cells followed by the analysis of pre-mRNA splicing using reverse transcriptase-polymerase chain reaction as well as LCAT activity assay. The results reveal that 1) the mutation of the branchpoint adenosine to any other nucleotide completely abolishes splicing; 2) the insertion of a normal branch site into the intronic sequence of the natural (IVS4-22c) or the branchpoint (IVS4-20t) mutant completely restores splicing; 3) the natural mutation can be partially rescued by making a single nucleotide change (G → A) within the branchpoint consensus sequence; and 4) other single base changes, particularly around the branchpoint adenosine residue, significantly decrease the efficiency of splicing and thus enzyme activity. Surprisingly, the nucleotide transversion at the last position of the branchpoint sequence (i.e. IVS4-25a or -25g) results in a 2.7-fold increase in splicing efficiency. Therefore, these observations clearly establish the functional significance of the branchpoint sequence of intron 4 for the splicing of the human LCAT mRNA precursors.
THE SPECIES–AREA RELATIONSHIP IN BAT ASSEMBLAGES OF TROPICAL CAVES

Abstract We tested for a relationship between number of bat species and surface area of 20 caves in central Mexico and investigated the role of the habitat diversity model as an explanation for this relationship. There was a significant positive correlation between the logarithm of species richness and the logarithm of cave surface area, evidence of a species–area relationship. Our data suggest that roost site diversity, as indicated by spatial variation in relative humidity and presence of avons (conical depressions in cave ceilings) is a cause of the species–area relationship.
Improving IPTV services by H.264/SVC adaptation and traffic control

This paper presents a novel approach that combines both in-network, application-layer adaptation and network-layer traffic control of scalable video streams based on the H.264/SVC standard. In the IPTV/VoD scenario considered, an intercepting RTSP/RTP proxy performs admission control of the requested video, based on the signaled scalability information, and decides whether the content can be streamed without changes or in an adapted version. The proxy configures the network layer appropriately in order to separate the video stream from best-effort traffic on the same link. Rather than performing fixed bandwidth allocation, our proxy approach uses the Hierarchical Token Bucket (HTB) queuing discipline to allow for borrowing bandwidth between traffic classes. In that setting, two different allocation policies are introduced. The Hard Reservation Policy (HRP) performs admission control and adaptation on the video streams and does not modify video bandwidth allocation after admission. In contrast, the Flexible Borrowing Policy (FBP) restricts the admission control to the base layer of the SVC stream. The packets carrying MGS enhancement layer data are marked with priorities by the proxy and are handled at the network layer by a priority-based queuing mechanism. Both a qualitative comparison and an experimental evaluation of the two policies are given.
Edge preservation image enlargement and enhancement method based on the adaptive Perona-Malik non-linear diffusion model

In this study, the authors have proposed a new super resolution (SR) model based on the Perona–Malik regularisation scheme. The new model integrates into its regularisation component an adaptive exponential term which automatically adjusts itself depending on the local image features. This lends more sensitivity and adaptability to the proposed model, thereby making the reconstruction process much less punishing against semantically important features. Therefore, regularisation is stronger in homogeneous regions, and weaker in the neighbourhood of boundaries. The proposed method has a promising capability of supressing noise more effectively, while preserving important image features. The approach used differs significantly from the available methods, especially in the manner in which adaptability has been deployed. Noting that SR methods are less sensitive to the local image topography, a factor that causes the super-resolved images to be visually poor, the new method sensitively probes the local features of the image, and determines the necessary level of reconstruction and regularisation. Additionally, the formulation robustly introduces a backward diffusion, a phenomenon proved from literature to have a tendency of sharpening edges. The authors have included empirical reconstruction results to demonstrate that their model produces better images in comparison with other classical methods.
Systemic alpha‐interferon therapy of multiple sclerosis

A randomized, double-blind, placebo-controlled crossover study tested the efficacy of natural alpha interferon in altering exacerbating-remitting MS. Twenty-four patients with frequent exacerbations were treated for 6-month periods, beginning with either 5 × l06 IU of interferon daily or placebo. A 6-month washout period followed each treatment. Exacerbation rates were reduced during interferon and placebo phases compared with pre-study rates; a greater reduction occurred on interferon, particularly following placebo, possibly reflecting a learning phenomenon. Fifteen patients with a strictly exacerbating-remitting course had fewer and milder exacerbations on interferon compared with those on placebo, whereas 9 patients with a progressive component continued to have active disease. These results suggest that interferon might reduce exacerbations in certain patients and indicate guidelines for future trials of interferon in MS.
Open Gustilo 1 and 2 Midshaft Fractures of the Radius and Ulna in Children: Is There a Role for Cast Immobilization After Wound Debridement?

Introduction: Open fractures of the forearm in children are one of the indications for open reduction and internal fixation. Fixation allows for soft tissue management and maintenance of reduction. This study compares the outcome of open Gustilo 1 and 2 midshaft forearm fractures treated with cast immobilization versus the outcome of those treated with internal fixation after wound debridement. Methods: This is a retrospective study of the cases of 31 children treated in Kandang Kerbau Women's and Children's Hospital from 1998 to 2005. All had wound debridement, followed by cast immobilization in 15 patients and implant stabilization in 16 others, using plates and screws or intramedullary K-wires. The patients were assessed at final follow-up using the classification by Price. Results: Both treatment groups had 100% excellent or good results. There was no significant difference in time to union. However, there was a higher incidence rate of delayed union and infection when treated with implant stabilization. The main complication associated with cast immobilization was loss of reduction (4 cases), of which 1 case required a second manipulation. Discussion: Despite the trend toward implant stabilization of all open forearm fractures, this study shows that there is still a role for cast immobilization in its treatment of Gustilo 1 and 2 open forearm fractures as long as proper casting technique and close follow-up is achieved. However, internal fixation should be considered in cases where the fracture is noted intraoperatively to be unstable or if attempted reduction fails, bearing in mind the possible complications associated with internal fixation.
Lineal Perspective Estimation on Monocular Images

Depth estimation from monocular images can be retrieved from the perspective distortion. One major eect of this distortion is that a set of parallel lines in the real world converges into a single point in the image plane. The estimation of the coordinates of the vanishing point can be retrieved directly by dierent ways, like Hough Transform and First derivative approaches. Many of them work on specic real scene characteristics and often lead to spurious vanishing points. Technology and computational advances suggest that some renements to these simple techniques or a combination of them could lead to more condent vanishing point detection than modelling and developing a new complicated ones. In this paper we study the behaviour of two classical approaches, intro- duce them some improvements and propose a new combinational tech- nique to estimate the location of the vanishing point in an image. The solutions will be described and compared, also through the discussion of the results obtained from their application to real images.
Pressure dependence of the superconducting transition temperature of YBa2Cu3O7 as a function of carrier concentration: A test for a simple charge-transfer model.

Measurements of the superconducting transition temperature ${\mathit{T}}_{\mathit{c}}$ vs purely hydrostatic pressure (P0.6 GPa) on specimens of compositions ${\mathrm{YBa}}_{2\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{La}}_{\mathit{x}}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ (0\ensuremath{\le}x\ensuremath{\le}0.14) and ${\mathrm{Y}}_{1\mathrm{\ensuremath{-}}\mathit{y}}$${\mathrm{Ca}}_{\mathit{y}}$${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ (0\ensuremath{\le}y\ensuremath{\le}0.06) yield an approximately linear relation between ${\mathit{dT}}_{\mathit{c}}$/dP and the carrier concentration induced in the ${\mathrm{CuO}}_{2}$ planes by chemical substitution with ${\mathit{dT}}_{\mathit{c}}$/dP ranging from -0.6 K/GPa (y=0.06) to +2.2 K/GPa (x=0.14). A simple phenomenological model clarifies the ${\mathit{dT}}_{\mathit{c}}$/dP behavior and provides a physical origin for the observed anomalous peak in ${\mathit{T}}_{\mathit{c}}$(P) at P\ensuremath{\sim}4 GPa [Klotz, Reith, and Schilling, Physica C 172, 423 (1991)].
A novel SOI-based MOSFET with ultra-low subthreshold swing for cryogenic applications

Two-dimensional arrangements of well-controlled numbers and types of dislocations were realized in thin SOI device layers by semiconductor wafer bonding. Remarkable improvements of nMOSFET performance are obtained if the defects are positioned on well-defined locations in the channel. An increase of the drain current (ID) was proved by one order of magnitude at room temperature. The increase of ID depends on the dislocation type. Mixed dislocations result in the highest increase of the drain current. Such MOSFETs operate also at cryogenic temperatures with excellent parameters (subthreshold swing of 21 mV/dec, etc.). Coulomb blockades related to dislocations are observed making it possible to realize single electron transistors for future cryogenic applications.
Perceptrons híbridos lineares/morfológicos fuzzy com aplicações em classificação

Perceptrons morfologicos (MPs) pertencem a classe de redes neurais morfologicas (MNNs). Estas redes representam uma classe de redes neurais artificiais que executam operacoes de morfologia matematica (MM) em cada no, possivelmente seguido pela aplicacao de uma funcao de ativacao. Vale ressaltar que a morfologia matematica foi concebida como uma teoria para processamento e analise de objetos (imagens ou sinais), por meio de outros objetos chamados elementos estruturantes. Embora inicialmente desenvolvida para o processamento de imagens binarias e posteriormente estendida para o processamento de imagens em tons de cinza, a morfologia matematica pode ser conduzida de modo mais geral em uma estrutura de reticulados completos. Originalmente, as redes neurais morfologicas empregavam somente determinadas operacoes da morfologia matematica em tons de cinza, denominadas de erosao e dilatacao em tons de cinza, segundo a abordagem umbra. Estas operacoes podem ser expressas em termos de produtos maximo aditivo e minimo aditivo, definidos por meio de operacoes entre vetores ou matrizes, da algebra minimax. Recentemente, as operacoes da morfologia matematica fuzzy surgiram como funcoes de agregacao das redes neurais morfologicas. Neste caso, falamos em redes neurais morfologicas fuzzy. Perceptrons hibridos lineares/morfologicos fuzzy foram inicialmente projetados como uma generalizacao dos perceptrons lineares/morfologicos existentes, ou seja, os perceptrons lineares/morfologicos fuzzy podem ser definidos por uma combinacao convexa de uma parte morfologica fuzzy e uma parte linear. Nesta dissertacao de mestrado, introduzimos uma rede neural artificial alimentada adiante, representando um perceptron hibrido linear/morfologico fuzzy chamado F-DELP (do ingles fuzzy dilation/erosion/linear perceptron), que ainda nao foi considerado na literatura de redes neurais. Seguindo as ideias de Pessoa e Maragos, aplicamos uma suavizacao adequada para superar a nao-diferenciabilidade dos operadores de dilatacao e erosao fuzzy utilizados no modelo F-DELP. Em seguida, o treinamento e realizado por intermedio de um algoritmo de retropropagacao de erro tradicional. Desta forma, aplicamos o modelo F-DELP em alguns problemas de classificacao conhecidos e comparamos seus resultados com os produzidos por outros classificadores. Abstract
HLJIT at TREC 2017 Real-Time Summarization

This paper describes the approaches used at the TREC 2017 Real-Time Summarization. This task contains two scenarios: push notifications and email digest. For the scenario of push notifications, three filtering models, which are based on the hyperlink-extended retrieval model, the Learning to Rank and the hybrid filtering model, are proposed to filter the relevant tweets for a given topic. A novelty verification method is given for further filter the tweets for push notification. For the scenario of email digest, three ranking models, the hyperlink-extended retrieval model, the retrieval model based on learning to rank, and the personal retrieval model, are presented to rank the relevant tweets. Similarly, a novelty verification is proposed for filtering the redundant tweets. The evaluation results of TREC 2017 Real-Time Summarization show that the performance of our models is competitive .
Hydrogen peroxide induces GADD153 in Jurkat cells through the protein kinase C-dependent pathway

Abstract Growth arrest and DNA damage-inducible gene 153 (GADD153) is a CCAAT/enhancer binding protein (C/EBP) related gene and is induced in response to various stimuli including DNA damaging agents, UV irradiation, and serum starvation. In this study, we investigated which intracellular signals contribute to the expression of GADD153 mRNA in Jurkat cells in response to oxidative stress using several kinds of kinase inhibitors. GADD153 mRNA expression was immediately enhanced following hydrogen peroxide exposure and was significantly inhibited by treatment with H-7, staurosporin, and Ro-31-8220. In particular, rottlerin, a PKCδ specific inhibitor, markedly attenuated hydrogen peroxide-induced GADD153 mRNA expression even at 1 μM. Treatment with a potent PKC activator, phorbol-12-myristate-13-acetate (PMA), augmented GADD153 mRNA in Jurkat cells in the presence of hydrogen peroxide, although PMA alone induced GADD153 mRNA marginally. Hydrogen peroxide significantly enhanced the AP-1 binding activity of the nuclear extract from Jurkat cells to the GADD153 AP-1 binding site. AP-1 binding activity was suppressed by rottlerin treatment. These findings indicate that PKC, especially PKCδ, plays an important role in the induction of GADD153 mRNA following oxidative stress.
Initiating and potentiating role of platelets in tissue factor‐induced thrombin generation in the presence of plasma: subject‐dependent variation in thrombogram characteristics

Summary. The hemostatic activity of plasma is determined by platelet activation and coagulation, which processes are mutually stimulatory. We studied this interaction by measuring the cleavage of fluorescent thrombin substrate in platelet‐rich plasma (PRP), using the calibrated thrombogram method. In freshly isolated human plasma, thrombin formation triggered by tissue factor was fully dependent on the presence of platelets. It was abolished by annexin A5, indicating dependence on phosphatidylserine (PS) exposure at activated platelets. Comparison of plasmas from various subjects showed considerable interindividual variation in total amount of thrombin generation, regardless of whether platelets or PS‐containing phospholipids were present. Integrin αIIbβ3 antagonists and ADP receptor blockage, but not aspirin, decreased the rate of thrombin generation (thrombin peak level) and extended the time of onset. Platelet inhibition with cAMP‐elevating agents decreased the thrombin‐forming rate, but surprisingly shortened the onset time. Stimulation of platelets with agonists of Gi/q‐coupled receptors and, to a larger extent, with collagen or Ca2+‐ionophore increased the rate of thrombin generation and shortened its onset. In PRP from donors with low and high generation, platelet inhibitors and activators were similarly effective. Taken together, these results indicate that, in tissue factor‐triggered PRP, PS exposure on activated platelets regulates both onset and rate of thrombin generation. However, coagulant activity rather than platelet activation determines the total amount of thrombin formed, i.e. the endogenous thrombin potential. Thus, kinetics of thrombin generation in PRP are controlled by platelet inhibitors and agonists, but the process is restricted in amount by the subject‐dependent variation in coagulation.