Miracle-dz/UniFAR-FTUs huggingface dataset:
Design Consideration for LTE Channel Estimator Implementation with Greedy Algorithms

The greedy algorithms are efficient ways in reconstructing the sparse signal. Among all the greedy recovery algorithms for practical compressive sampling(CS), Subspace Pursuit(SP) can offer reliable recovery accuracy with low costs. In this paper, the SP algorithm is optimized by reducing the complexity of the least square(LS) calculation in each iteration. The Optimized SP performs well in LTE channel estimation when compared with the other greedy algorithms. The utilization of Partial Fourier Matrix helps reduce the matrix storage in SP hardware implementation. The matrix inverse calculation is also simplified by taking advantage of the Hermite Toeplitz matrix generated from the Fourier Matrix.
Tranilast Increases Vasodilator Response to Acetylcholine in Rat Mesenteric Resistance Arteries through Increased EDHF Participation

Background and Purpose Tranilast, in addition to its capacity to inhibit mast cell degranulation, has other biological effects, including inhibition of reactive oxygen species, cytokines, leukotrienes and prostaglandin release. In the current study, we analyzed whether tranilast could alter endothelial function in rat mesenteric resistance arteries (MRA). Experimental Approach Acetylcholine-induced relaxation was analyzed in MRA (untreated and 1-hour tranilast treatment) from 6 month-old Wistar rats. To assess the possible participation of endothelial nitric oxide or prostanoids, acetylcholine-induced relaxation was analyzed in the presence of L-NAME or indomethacin. The participation of endothelium-derived hyperpolarizing factor (EDHF) in acetylcholine-induced response was analyzed by preincubation with TRAM-34 plus apamin or by precontraction with a high K+ solution. Nitric oxide (NO) and superoxide anion levels were measured, as well as vasomotor responses to NO donor DEA-NO and to large conductance calcium-activated potassium channel opener NS1619. Key Results Acetylcholine-induced relaxation was greater in tranilast-incubated MRA. Acetylcholine-induced vasodilation was decreased by L-NAME in a similar manner in both experimental groups. Indomethacin did not modify vasodilation. Preincubation with a high K+ solution or TRAM-34 plus apamin reduced the vasodilation to ACh more markedly in tranilast-incubated segments. NO and superoxide anion production, and vasodilator responses to DEA-NO or NS1619 remained unmodified in the presence of tranilast. Conclusions and Implications Tranilast increased the endothelium-dependent relaxation to acetylcholine in rat MRA. This effect is independent of the nitric oxide and cyclooxygenase pathways but involves EDHF, and is mediated by an increased role of small conductance calcium-activated K+ channels.
Method of photoelectric detection and signal processing for measuring the overprint deviation of printing press

A kind of photoelectric detection method based on black-white bar code and modern photoelectric detection technology is put forward for measuring the displacement deviation of printing press cylinder surface in high-speed motion state. A high-precision noncontact photoelectric detection system is designed and implemented. The accurate testing bar code cooperates with the high-speed A/D mixed signal processing system, the position deviation of every point on the circumference of the printing press system in high-speed measurement state can be obtained, low measurement error which is in the range of ±10μm. The given experiment results indicate that: the system has stable working condition, high measurement speed, and the system provide a new kind of monitoring technology to effectively deal with the overprint deviation.
Zero reference level for right heart catheterisation

Although in the pulmonary circulation small pressure differences may alter the categorisation of patients, there is no consensus on a standard zero reference level (ZRL). In the supine position, ZRL is mostly set at “5 cm below anterior thorax surface”, “1/3 thoracic diameter below anterior thorax surface”, “mid-thoracic level” or “10 cm above table level”. We retrospectively assessed the distance of these four ZRLs from computed tomography-derived right and left atrial centre levels and from one another in patients undergoing right heart catheterisation and calculated the respective differences in pressure readings. We included 196 consecutive patients. The ZRL at “1/3 thoracic diameter” was most often (98.5%) level with the right atrium, and the ZRL at “mid-thoracic level” was level with the left atrium (97.4%), revealing a median (range) pressure difference of -0.3 (-3.0–1.3) and 0.2 (-2.0–1.3) mmHg from the right and left atrial centre level, respectively. The largest differences (8.0 (2.0–15.4) mmHg) were found between the ZRLs “5 cm below anterior thorax surface” and “10 cm above table level”. Accordingly, 59% versus 80% of patients would be classified with pulmonary hypertension and 7% versus 38% with elevated left heart pressures. The choice of ZRL strongly influences pulmonary pressure readings and pulmonary hypertension classification. 1/3 thoracic diameter mostly represents the right atrium while the left atrium is best represented by the mid-thoracic level. Choice of pulmonary circulation zero reference level influences classification of pulmonary hypertension http://ow.ly/oZ9lQ
90Y Radioembolization of Colorectal Hepatic Metastases Using Glass Microspheres: Safety and Survival Outcomes from a 531-Patient Multicenter Study

Hepatic metastases of colorectal carcinoma are a leading cause of cancer-related mortality. Most colorectal liver metastases become refractory to chemotherapy and biologic agents, at which point the median overall survival declines to 4–5 mo. Radioembolization with 90Y has been used in the salvage setting with favorable outcomes. This study reports the survival and safety outcomes of 531 patients treated with glass-based 90Y microspheres at 8 institutions, making it the largest 90Y study for patients with colorectal liver metastases. Methods: Data were retrospectively compiled from 8 institutions for all 90Y glass microsphere treatments for colorectal liver metastases. Exposure to chemotherapeutic or biologic agents, prior liver therapies, biochemical parameters before and after treatment, radiation dosimetry, and complications were recorded. Uni- and multivariate analyses for predictors of survival were performed. Survival outcomes and clinical or biochemical adverse events were recorded. Results: In total, 531 patients received 90Y radioembolization for colorectal liver metastases. The most common clinical adverse events were fatigue (55%), abdominal pain (34%), and nausea (19%). Grade 3 or 4 hyperbilirubinemia occurred in 13% of patients at any time. The median overall survival from the first 90Y treatment was 10.6 mo (95% confidence interval, 8.8–12.4). Performance status, no more than 25% tumor burden, no extrahepatic metastases, albumin greater than 3 g/dL, and receipt of no more than 2 chemotherapeutic agents independently predicted better survival outcomes. Conclusion: This multiinstitutional review of a large cohort of patients with colorectal liver metastases treated with 90Y radioembolization using glass microspheres has demonstrated promising survival outcomes with low toxicity and low side effects. The outcomes were reproducible and consistent with prior reports of radioembolization.
Genetic algorithms for the synthesis optimization of a set of irredundant diagnostic tests in the intelligent system

Method of the synthesis optimization of a set of irredundant diagnostic tests with genetic algorithms used to solve problems of large dimension is suggested. The idea of creating the irredundant partial implication matrix sectionalized by classification mechanisms lies in the base; creating a set of irredundant diagnostic tests is based on revealing certain kinds of regularities with the use of genetic transformations. All the obligatory and non-informative features are not used in genetic transformations. Procedures of selection able-to-compete individuals from populations, decision making concerning the object under examination of each able-to-compete individual from populations, and organizing of voting on the set of these individuals are suggested. In order to solve these problems the intelligent system is used.
Why You Should Run TPC-DS: A Workload Analysis

The Transaction Processing Performance Council (TPC) is completing development of TPC-DS, a new generation industry standard decision support benchmark. The TPC-DS benchmark, first introduced in the "The Making of TPC-DS" [9] paper at the 32nd International Conference on Very Large Data Bases (VLDB), has now entered the TPC's "Formal Review" phase for new benchmarks; companies and researchers alike can now download the draft benchmark specification and tools for evaluation. The first paper [9] gave an overview of the TPC-DS data model, workload model, and execution rules. This paper details the characteristics of different phases of the workload, namely: database load, query workload and data maintenance; and also their impact to the benchmark's performance metric. As with prior TPC benchmarks, this workload will be widely used by vendors to demonstrate their capabilities to support complex decision support systems, by customers as a key factor in purchasing servers and software, and by the database community for research and development of optimization techniques.
DEVELOPMENT OF MICROWAVE ASSISTED SYNTHESIS FOR COMMON MOLECULES

Microwave synthesis are attractive in offering reduce pollution, low cost and high yields with shorter reaction time together with simplicity in processing and handling. In this study, the compounds like β-Resorcylic acid & Benzocaine were synthesized by microwave irradiation. The compounds were synthesized rapidly with more yields as compared to the conventional method. The synthesized compounds were subjected to physico-chemical studies like melting point, TLC, partition coefficients, dissociation constants and % ionization. The structures of synthesized compounds were characterized by UV, FT-IR, MASS and NMR spectroscopy.
Observation of Strong Interlayer Coupling in MoS2/WS2 Heterostructures

Epitaxial growth of A-A and A-B stacking MoS2 on WS2 via a two-step chemical vapor deposition method is reported. These epitaxial heterostructures show an atomic clean interface and a strong interlayer coupling, as evidenced by systematic characterization. Low-frequency Raman breathing and shear modes are observed in commensurate stacking bilayers for the first time; these can serve as persuasive fingerprints for interfacial quality and stacking configurations.
Organic peroxides inhibit neutrophil leukotriene B4 biosynthesis

Leukotriene B4, an autacoid metabolite of arachidonic acid produced by polymorphonuclear neutrophils, induces chemokinesis, chemotaxis, and adhesion of these cells at sites of inflammation. Because neutrophil infiltration is a self‐limited process, we hypothesized that oxidized lipid products of neutrophil‐damaged tissue might inhibit leukotriene B4 biosynthesis, thereby preventing additional neutrophil infiltration and limiting peroxidative tissue damage. Erythrocyte ghosts exposed to a hydrogen peroxide‐generating system served as a model of peroxidized tissue in inflammation and inhibited neutrophil leukotriene B4 production by 50% compared with unoxidized ghosts. Organic peroxides, including tert‐butylhydroperoxide, peracetic acid, and linoleic hydroperoxide, resembling the product(s) of tissue membrane peroxidation in lipid solubility and cata‐ lase resistance, inhibited leukotriene B4 biosynthesis in a dose‐dependent manner (50% inhibitory concentration of 3.9 μM compared to 530 μM for H2O2). Biosynthetic steps prior to the 5‐lipoxygenase did not appear to be the site of inhibition. Likewise, the step after the 5‐lipoxygenase, the leukotriene A4 hydrolase, was not primarily involved. Thus a possible mechanism for controlling the influx of neutrophils and their oxidative damage during inflammation may be inhibition of the 5‐lipoxygenase by catalase‐resistant lipid peroxides released by tissue membranes.
Neuropathic pain sensations are differentially sensitive to dextrorphan

Rats with an experimental painful peripheral neuropathy (the CCI model) display heat-hyperalgesia and mechano- allodynia. Previous work has shown that the heat- hyperalgesia is suppressed by dextrorphan (DEX) and other N-methyl-D-aspartate (NMDA) receptor antagonists. The present work shows that when tested in the same rats, a dose of DEX that is maximally effective against heat-hyperalgesia has no effect on mechano-allodynia. The results suggest that different kinds of abnormal pain sensations may be caused by different pathophysiologic mechanisms that may respond differently to drug therapy.
Turbo cross decoding of multiple descriptions

The transmission of multimedia data over best-effort packet networks has motivated a strong research effort in the area of multiple description coding. While most contributions concentrate on the design of encoders for the erasure channel, this paper considers the transmission of multiple descriptions over a typical wireless link. Assuming that channel state information is available and that the reliability of each transmitted bit is known to the receiver, we present a soft-in/soft-out decoder for a new class of block codes derived from multiple description scalar quantization. The idea of cross decoding multiple descriptions using soft information, can be successfully extended to the concatenation of multiple description codes and convolutional codes. For this case, the application of the turbo principle yields an iterative decoding scheme, which makes use of the correlation between descriptions in a very effective way.
Endurance/Retention Trade Off in HfOx and TaOx Based RRAM

In this paper the memory performances of the TiN/HfO<sub>2</sub>/Ti/TiN and TiN/Ta<sub>2</sub>O<sub>5</sub>/TaOx/TiN memory stacks are compared. First, the bipolar switching parameters and the effect of the compliance current on the memory window and endurance are investigated. Then, the endurance and data retention properties are compared at a given operating current (100μA). Ta<sub>2</sub>O<sub>5</sub> based memory stack exhibits a better memory window (2 decades) and data retention, while the HfO<sub>2</sub> one shows good endurance properties (10<sup>8</sup> cycles). Finally, thanks to ab initio calculations using Density Functional Theory, the stability of the conductive filament is investigated in both HfO<sub>x</sub> and TaO<sub>x</sub> dielectrics.
Thermodynamic stabilization of nanocrystallinity

Abstract Nanocrystalline materials are polycrystals made up of nanometer-sized grains separated by a network of interfaces – grain or phase boundaries – that generally make a positive contribution to the total energy of the system. Consequently, there exists a thermodynamic driving force for reducing the overall interface area, which renders such systems intrinsically unstable against coarsening. The latter process entails interface migration and the concomitant deterioration of any property enhancements effected by the ultrafine grain size. We describe a strategy for significantly reducing or even eliminating the driving force for grain growth in nanocrystalline materials via the deliberate segregation of solute atoms into the core region of boundaries. Applied to Pd – Zr solid solutions containing up to 20 at. % Zr, the strategy yields nanocrystalline specimens manifesting an unusually high thermal stability with respect to grain growth, extending to the vicinity of the melting point. Parallels are drawn between the migration of grain boundaries in segregation-stabilized systems and antiphase domain boundaries in ordered alloys.
Statistical Call Admission Control for IEEE 802.11 Multi-Hop Wireless Ad Hoc Networks

In this paper, we present a fully distributed model-based call admission control (CAC) scheme for IEEE 802.11 multihop ad hoc networks. The scheme predicts the resources that a new call will consume by using both source traffic modeling and link-layer channel modeling, and hence guarantees sufficient network resources for the calls in service. Unlike most of the model-based CAC schemes in the literature, our CAC offers stochastic delay guarantees instead of average delay guarantees for multihop multimedia connections, based on the effective bandwidth theory and its dual effective capacity concept. Simulation results show that our scheme combines both efficient resource utilization and delay guarantees to a certain probabilistic limit.
Analysis of the requirement for β2‐microglobulin for expression and formation of human CD1 antigens

Human CD1 form a group of nonpolymorphic leukocyte surface molecules with homology to major histocompatibility complex (MHC) proteins. Recent findings in human and in mouse demonstrate the capacity of CD1 molecules to present nonpeptide components like lipids or lipoglycans as well as peptides. We studied the involvement of β2‐microglobulin (β2m) in expression of the classic human CD1 proteins CD1a, CD1b, and CD1c. The β2m‐deficient human melanoma cell line FO‐1 was transiently transfected with either CD1a, CD1b, or CD1c DNA alone, or in combination with β2m using the adenovirus‐enhanced receptor‐mediated transfer infection system. Only co‐transfection of FO‐1 cells with CD1 + β2m resulted in the detection of CD1 Ag by monoclonal antibodies (mAb). This indicated that CD1 mAb recognized determinants are dependent on β2m and raised the question whether β2m‐free forms of CD1 can be expressed. Therefore, to visualize CD1 molecule expression independently of β2m, we expressed tagged recombinant forms. A full‐length CD1b construct tagged at the very C terminus with a small peptide was transported to the plasma membrane only when β2m was co‐transfected. β2m involvement in the transport of CD1 was confirmed by expression of soluble forms of CD1a, CD1b, and CD1c in three different cell types. Analogous to tagged full‐length CD1b, secretion of the soluble CD1 constructs was strictly dependent on β2m. The soluble CD1 chimeras were secreted as complexes with endogenous β2m. Thus, similar to its role for MHC class I expression, β2m is essential for processing and surface transport of the classic human CD1 molecules CD1a, CD1b, and CD1c.
Indoor localization using FM radio signals: A fingerprinting approach

Indoor positioning has become highly important because of the failure of GPS in such areas. Many Wireless Local Area Networks (WLAN) indoor localization studies use the fingerprinting technique. In this study, a new positioning system is proposed based on broadcast FM as a signal of opportunity, with significant benefits for indoor positioning. This localization system uses FM signal strength fingerprinting. The deterministic approach of fingerprinting is considered, and several algorithms are compared. The results demonstrate a minimum mean distance error of 2.96m for the K-Weighted Nearest Neighbors (KWNN) algorithm with K=6. The comparison between using fingerprinting for FM and Wi-Fi is also discussed.
An accurate perturbation analysis algorithm for music with Toeplitz covariance matrix

In this paper, a new perturbation analysis algorithm for the MUltiple SIgnal Classification (MUSIC) estimator applied to a Hermitian Toeplitz covariance matrix is presented. Inspired by the perspective that the MUSIC algorithm can be recognized as a structured matrix approximation, the perturbation of parameter estimates can be predicted more accurately by seeking the minimum of a Frobenius norm. The prediction results are analytically expressed through a weighted least squares method. The performance of the MUSIC estimators can also be predicted using our algorithm.
Something Overlooked? How experts in change detection use visual saliency

How does expertise in the analysis of particular images influence the effects of visual saliency upon attention? Expert analysts of aerial photographs and untrained viewers undertook change-detection and location memory tasks using aerial photographs with eye movements recorded throughout. Experts were more accurate in both tasks. Significant differences were also seen in the scanpaths: Untrained viewers fixated preferentially upon salient features throughout stimulus presentation whereas experts did not. However, both groups showed a strong influence of saliency in change detection and memory tasks. We interpret this apparent contradiction by: (i) assuming that the use of saliency in visual search is discretionary, and experts can use semantic information to prioritise where to fixate next; whereas, (ii) in tasks requiring spatial memory, analysis of visual saliency delivers easily acquired landmarks to reference the location of items in an image; a previously overlooked function used by expert and untrained viewers alike. Copyright © 2009 John Wiley & Sons, Ltd. Language: en
Transmission Policies for Improving Physical Layer Secrecy Throughput in Wireless Networks

In this letter, we analyze the physical layer secrecy throughput in wireless fading networks with independent eavesdroppers that do not collude. We study the impacts of the total number of eavesdroppers on the secrecy throughput. In addition, we propose two channel-adaptive transmission policies for improving the secrecy throughput. The proposed transmission policies have low computational complexity and therefore are feasible in practice. We use analytical results and simulation results to justify the usage of the proposed schemes.
Imidazo[1,2-a]Pyridine-3-Carboxamides Are Active Antimicrobial Agents against Mycobacterium avium Infection In Vivo

ABSTRACT A panel of six imidazo[1,2-a]pyridine-3-carboxamides (IAPs) were shown to have low-micromolar activity against Mycobacterium avium strains. Compound ND-10885 (compound 2) showed significant activity in the lung, spleen, and liver in a mouse M. avium infection model. A combined regimen consisting of ND-10885 (compound 2) and rifampin was additive in its anti-M. avium activity in the lung. Our data indicate that IAPs represent a new class of antibiotics that are active against M. avium and could potentially serve as an effective addition to a combined treatment regimen.
Learning Object Categories From Internet Image Searches

In this paper, we describe a simple approach to learning models of visual object categories from images gathered from Internet image search engines. The images for a given keyword are typically highly variable, with a large fraction being unrelated to the query term, and thus pose a challenging environment from which to learn. By training our models directly from Internet images, we remove the need to laboriously compile training data sets, required by most other recognition approaches-this opens up the possibility of learning object category models “on-the-fly. ” We describe two simple approaches, derived from the probabilistic latent semantic analysis (pLSA) technique for text document analysis, that can be used to automatically learn object models from these data. We show two applications of the learned model: first, to rerank the images returned by the search engine, thus improving the quality of the search engine; and second, to recognize objects in other image data sets.