Miracle-dz/UniFAR-FTUs huggingface dataset:
Transmission of MIMO - OFDM signal using Optical Link

— Wireless networks have quickly become part of everyday life. Wireless LANs, cell phone networks, and personal area networks are just a few examples of widely used wireless networks. However, wireless devices are range and data rate limited. The research community has spent a great deal of effort on finding ways to overcome these limitations. In other words, high Data-Rate wireless access is demanded by many applications. Traditionally, more bandwidth is required for higher data-rate transmission. However, due to spectral limitations, it is often impractical or sometimes very expensive to increase bandwidth. Multiple transmit and receive antennas can be used to form multiple-input multiple-output (MIMO) channels to increase the capacity by a factor of the minimum number of transmit and receive antennas. Along with MIMO channels Orthogonal frequency division multiplexing (OFDM) i.e. MIMO-OFDM is considered for wideband transmission to mitigate inter symbol interference and enhance system capacity, Whereas optical communication has several benefits such as larger bandwidth, reduced power consumption that has made it an attractive implementation option for various communication systems including wireless LAN’s. This paper investigates the feasibility of MIMO-OFDM technique optical fiber based system i.e. MIMO-OFDM for optical communication.
A New Transform Domain Neural Network for Text-To-Phoneme Mapping

In this paper, a new Transform Domain implementation of the well known Multilayer Perceptron Neural Network is presented. With the Transform Domain implementation, the input of the Neural Network can be represented in a more compact manner and the elements of the input vector become uncorrelated. The new Transform Domain Multilayer Perceptron (TDMLP) Neural Network is applied for the problem of Text-To-Phoneme (TTP) mapping and it shows better speed of convergence during training than the well known Multilayer Perceptron (MLP) Neural Network while the phoneme accuracy achieved by the new algorithm is comparable with that of the MLP. Key-Words: Transform Domain Neural Network, Text-To-Phoneme Mapping, Multilayer Perceptron Neural Network, Discrete Cosine Transform, Phoneme Accuracy.
Image Denoising Using Low Rank Minimization With Modified Noise Estimation

Recently, the application of low rank minimization to image denoising has shown remarkable denoising results which are equivalent or better than those of the existing state-of-the-art algorithms. However, due to iterative nature of low rank optimization, estimation of residual noise is an essential requirement after each iteration. Currently, this noise is estimated by using the filtered noise in the previous iteration without considering the geometric structure of the given image. This estimate may be affected in the presence of moderate and severe levels of noise. To obtain a more reliable estimate of residual noise, we propose a modified algorithm (GWNNM) which includes the contribution of the geometric structure of an image to the existing noise estimation. Furthermore, the proposed algorithm exploits the difference of large and small singular values to enhance the edges and textures during the denoising process. Consequently, the proposed modifications achieve significant improvements in the denoising results of the existing low rank optimization algorithms.
Actions of Hydrogen Sulfide and ATP-Sensitive Potassium Channels on Colonic Hypermotility in a Rat Model of Chronic Stress

Objective To investigate the potential role of hydrogen sulphide (H2S) and ATP-sensitive potassium (KATP) channels in chronic stress-induced colonic hypermotility. Methods Male Wistar rats were submitted daily to 1 h of water avoidance stress (WAS) or sham WAS (SWAS) for 10 consecutive days. Organ bath recordings, H2S production, immunohistochemistry and western blotting were performed on rat colonic samples to investigate the role of endogenous H2S in repeated WAS-induced hypermotility. Organ bath recordings and western blotting were used to detect the role of KATP channels in repeated WAS. Results Repeated WAS increased the number of fecal pellets per hour and the area under the curve of the spontaneous contractions of colonic strips, and decreased the endogenous production of H2S and the expression of H2S-producing enzymes in the colon devoid of mucosa and submucosa. Inhibitors of H2S-producing enzymes increased the contractile activity of colonic strips in the SWAS rats. NaHS concentration-dependently inhibited the spontaneous contractions of the strips and the NaHS IC50 for the WAS rats was significantly lower than that for the SWAS rats. The inhibitory effect of NaHS was significantly reduced by glybenclamide. Repeated WAS treatment resulted in up-regulation of Kir6.1 and SUR2B of KATP channels in the colon devoid of mucosa and submucosa. Conclusion The colonic hypermotility induced by repeated WAS may be associated with the decreased production of endogenous H2S. The increased expression of the subunits of KATP channels in colonic smooth muscle cells may be a defensive response to repeated WAS. H2S donor may have potential clinical utility in treating chronic stress- induced colonic hypermotility.
Optimizing Multi-Transmitter-Single-Receiver (MISO) Antenna Systems With Partial Channel Knowledge

In this paper we consider a narrowband point-to-point communication system with many (input) transmitters and a single (output) receiver (ie, a “MISO” system). We assume the receiver has perfect knowledge of the channel but the transmitter has only limited channel information. We focus on two canonical classes of channel models: (a) the channel has zero mean with a fixed covariance matrix and (b) the channel has nonzero mean with covariance matrix proportional to unity. In both cases we are able to derive simple analytic expressions for the ergodic average and the cumulative distribution function of the mutual information for arbitrary input (transmission) signal covariance. With minimal numerical effort, we then determine the ergodic and outage capacities and the input signal covariances which achieve these maximal capacities. We thus show how a transmitter with partial channel knowledge (either knowing the mean channel or the signal covariance) should correlate its transmissions to maximize throughput.
PI3-kinase signaling contributes to orientation in shallow gradients and enhances speed in steep chemoattractant gradients

Dictyostelium cells that chemotax towards cAMP produce phosphatidylinositol (3,4,5)-trisphosphate [PtdIns(3,4,5)P3] at the leading edge, which has been implicated in actin reorganization and pseudopod extension. However, in the absence of PtdIns(3,4,5)P3 signaling, cells will chemotax via alternative pathways. Here we examined the potential contribution of PtdIns(3,4,5)P3 to chemotaxis of wild-type cells. The results show that steep cAMP gradients (larger than 10% concentration difference across the cell) induce strong PtdIns(3,4,5)P3 patches at the leading edge, which has little effect on the orientation but strongly enhances the speed of the cell. Using a new sensitive method for PtdIns(3,4,5)P3 detection that corrects for the volume of cytosol in pixels at the boundary of the cell, we show that, in shallow cAMP gradient (less than 5% concentration difference across the cell), PtdIns(3,4,5)P3 is still somewhat enriched at the leading edge. Cells lacking PI3-kinase (PI3K) activity exhibit poor chemotaxis in these shallow gradients. Owing to the reduced speed and diminished orientation of the cells in steep and shallow gradients, respectively, cells lacking PtdIns(3,4,5)P3 signaling require two- to six-fold longer times to reach a point source of chemoattractant compared with wild-type cells. These results show that, although PI3K signaling is dispensable for chemotaxis, it gives the wild type an advantage over mutant cells.
Scalable Distributed Subgraph Enumeration

Subgraph enumeration aims to find all the subgraphs of a large data graph that are isomorphic to a given pattern graph. As the subgraph isomorphism operation is computationally intensive, researchers have recently focused on solving this problem in distributed environments, such as MapReduce and Pregel. Among them, the state-of-the-art algorithm, Twin TwigJoin, is proven to be instance optimal based on a left-deep join framework. However, it is still not scalable to large graphs because of the constraints in the left-deep join framework and that each decomposed component (join unit) must be a star. In this paper, we propose SEED - a scalable sub-graph enumeration approach in the distributed environment. Compared to Twin TwigJoin, SEED returns optimal solution in a generalized join framework without the constraints in Twin TwigJoin. We use both star and clique as the join units, and design an effective distributed graph storage mechanism to support such an extension. We develop a comprehensive cost model, that estimates the number of matches of any given pattern graph by considering power-law degree distribution in the data graph. We then generalize the left-deep join framework and develop a dynamic-programming algorithm to compute an optimal bushy join plan. We also consider overlaps among the join units. Finally, we propose clique compression to further improve the algorithm by reducing the number of the intermediate results. Extensive performance studies are conducted on several real graphs, one containing billions of edges. The results demonstrate that our algorithm outperforms all other state-of-the-art algorithms by more than one order of magnitude.
Relationship between variability of the semidiurnal tide in the Northern Hemisphere mesosphere and quasi-stationary planetary waves throughout the global middle atmosphere

Abstract. To investigate possible couplings between planetary waves and the semidiurnal tide (SDT), this work examines the statistical correlations between the SDT amplitudes observed in the Northern Hemisphere (NH) mesosphere and stationary planetary wave (SPW) with wavenumber S=1 (SPW1) amplitudes throughout the global stratosphere and mesosphere. The latter are derived from the Aura-MLS temperature measurements. During NH summer-fall (July–October), the mesospheric SDT amplitudes observed at Svalbard (78° N) and Eureka (80° N) usually do not show persistent correlations with the SPW1 amplitudes in the opposite hemisphere. Although the SDT amplitudes observed at lower latitudes (~50–70° N), especially at Saskatoon (52° N), are often shown to be highly and positively correlated with the SPW1 amplitudes in high southern latitudes, these correlations cannot be sufficiently explained as evidence for a direct physical link between the Southern Hemisphere (SH) winter-early spring SPW and NH summer-early fall mesospheric SDT. This is because the migrating tide's contribution is usually dominant in the mid-high latitude (~50–70° N) NH mesosphere during the local late summer-early fall (July–September). The numerical correlation is dominated by similar low-frequency variability or trends between the amplitudes of the NH SDT and SH SPW1 during the respective equinoctial transitions. In contradistinction, during NH winter (November–February), the mesospheric SDT amplitudes at northern mid-high latitudes (~50–80° N) are observed to be significantly and positively correlated with the SPW1 amplitudes in the same hemisphere in most cases. Because both the SPW and migrating SDT are large in the NH during the local winter, a non-linear interaction between SPW and migrating SDT probably occurs, thus providing a global non-migrating SDT. This is consistent with observations of SDT in Antarctica that are large in summer than in winter. It is suggested that climatological hemispheric asymmetry, e.g. the SH and NH winter characteristics are substantially different, lead to differences in the inter-hemispheric SPW-tide physical links.
When to stop reviewing documents in eDiscovery cases: the Lit i View quality monitor and endpoint detector

In this paper, we describe a key issue of the review phase of litigation cases under the Discovery system, namely when to stop reviewing potentially relevant ("responsive") documents. UBIC's Lit i View software has recently been augmented with a Quality Monitor (patent pending) and a so-called Endpoint Detector (patent pending) which provide sound statistical indications of when document review can safely be stopped while maintaining defensibility in the subsequent trial.
The Occurrence of Continuation Parameters in CPS Terms

We prove an occurrence property about formal parameters of continuations in Continuation-Passing Style (CPS) terms that have been automatically produced by CPS transformation of pure, call-by-value lambda-terms. Essentially, parameters of continuations obey a stack-like discipline. This property was introduced, but not formally proven, in an earlier work on the Direct-Style transformation (the inverse of the CPS transformation). The proof has been implemented in Elf, a constraint logic programming language based on the logical framework LF. In fact, it was the implementation that inspired the proof. Thus this note also presents a case study of machine-assisted proof discovery.
Circles of Trust: Rival Information in Social Networks

We study strategic transmission of rival information among individuals who have altruistic relations. Information sharing naturally takes the form of word-of-mouth communication. Yet, the social forces that promote communication can also undermine it. Contrary to conventional wisdom, larger social networks may spread information less, and better-connected individuals may receive less information. Therefore, when forming networks, individuals cluster into groups that share information and trust by limiting connections as a commitment to secrecy.
Synchronized RF Generation in Distant Supply Rooms

For the operation of FAIR, the generation of phase synchronous RF cavity voltages in different supply rooms will be necessary. Caused by the high masses of heavy ions, frequency ramps between 0.85 and 5.4 MHz must be provided during the acceleration. These frequency ramps will be produced by digital signal generators that work according to the DDS principle (Direct Digital Synthesis). To enable synchronous operation of the signal generators, phase-synchronous reference signals must be provided by the bunch phase timing system BuTiS [1-2]. A prototype of this timing system has successfully been tested already. Based on this, the paper at hand describes the test of the synchronous generation of frequency ramps in distant supply rooms which provides the proof of principle for the cavity synchronisation concept.
DEMAND FOR GASOLINE IN JAPAN

A partial adjustment model is suggested and estimated by this study in order to explore the relationship between per capita income, price of substitute goods, and price of gasoline in Japan. The suggested model is estimated through application of the ordinary squares methods to 1957-99 time-series data. That income, price of substitute goods, price of gasoline, and previous consumption behavior are significant variables in determining gasoline consumption in Japan is suggested through study statistical analysis. In the short run, gasoline demand elasticity is inelastic with respect to income and price, 0.296 and -0.115 respectively. In the long run, however, with respect to gasoline demands, there is a tendency for income to be slightly elastic, 1.056, with price elasticity remaining inelastic, -0.411.
Models for the Analysis of Barley Marketing

Barley marketing, like a number of other commodities in Australia, is subject to the requirements of the Hilmer reforms. Approaches to the analysis of the possiblederegulation of barely marketing are considered. Emphasis is placed on the use of a spatial equilibrium model designed to assess the consequences of different degrees of market power exerted over the export and domestic markets and econometric techniques designed to assess the extent that prices in different export markets differe from what might be expected without exerting market power. Results are obtained which illustrate the fact that rents can be extracted from markets if market power can be exerted and they also provide information on the distribution of the rents. It is also observed that the Japanese import policy has a significant impact on the ability of Australia to extract price premiums.
Multi-Agent Based Recommendation System in E-commerce CHI

Abstract: Based on the status of e-commerce recommendation system analysis, this paper puts an Agent-based recommendation system. Firstly, this paper establishes an e-commerce personalized recommendation system model based on multi-Agent technology; then, introduces the principle and algorithm of the key agent in the model; lastly, simulates the process of personalized recommendation.
Political Warfare and Contentious Politics

Abstract : This thesis examines if increased Department of Defense (DOD) involvement in political warfare (PW) is justified through a qualitative, comparative analysis of U.S. PW actions conducted by the Department of State, Central Intelligence Agency, and DOD in two Cold War cases: Italy from 1943 1948 and Chile from 1961 1973. Concepts of strategy and social movement models of Doug McAdam, Charles Tilly, and Sidney Tarrow are applied to historical PW actions, both overt and covert. The case-study analysis clarifies each agency s conduct of PW and develops analytical tools to classify PW actions by approach and impact within the political setting. Data was collected from archives, declassified government documents, and expert analyses. Results indicate that, compared to other U.S. agencies, the DOD had a limited direct role in PW in the cases studied, but was an important enabler. In applying models of social movement theory to historical analysis, this thesis identifies and develops the contentious politics mobilization model s potential use in planning and evaluating PW strategies.
Memory-level and Thread-level Parallelism Aware GPU Architecture Performance Analytical Model

GPU architectures are increasingly important in the multi-core era due to their high number of parallel processors. Programming thousands of massively parallel threads is a big challenge for software engineers, but understanding the performance bottlenecks of those parallel programs on GPU architectures to improve application performance is even more difficult. Current approaches rely on programmers to tune their applications by exploiting the design space exhaustively without fully understanding the performance characteristics of their applications. To provide insights into the performance bottlenecks of parallel applications on GPU architectures, we propose a simple analytical model that estimates the execution time of massively parallel programs. The key component of our model is estimating the number of parallel memory requests (we call this the memory warp parallelism) by considering the number of running threads and memory bandwidth. Based on the degree of memory warp parallelism, the model estimates the cost of memory requests, thereby estimating the overall execution time of a program. Comparisons between the outcome of the model and the actual execution time in several GPUs show that the geometric mean of absolute error of our model on micro-benchmarks is 5.4% and on GPU computing applications is 13.3%. All the applications are written in the CUDA programming language.
JMJD6 Regulates ERα Methylation on Arginine

ERα functions are tightly controlled by numerous post-translational modifications including arginine methylation, which is required to mediate the extranuclear functions of the receptor. We report that upon oestrogenic stimulation, JMJD6, the only arginine demethylase described so far, interacts with and regulates methylated ERα (metERα) function. Moreover, by combining the silencing of JMJD6 with demethylation assays, we show that metERα is a new substrate for JMJD6. We propose that the demethylase activity of JMJD6 is a decisive regulator of the rapid physiological responses to oestrogen.
Deep structure or emergence theory: contrasting theoretical foundations for information systems development

The linguistic conceptual distinction between deep and surface structures offers an interesting metaphor for developing new theories of information systems. However, the deep structure notion is both richer and more strongly contested in the linguistic field than can be communicated in published articles about new theories of information systems. This article explores the deep structure notion more fully, how faithful information system (IS)‐related articles adhere to the original concept and the implication of alternative linguistic theories for the IS field.
Biodiversity Conservation in a Game Theoretic Model of a Fishery

This paper proposes a game theoretic modeling framework for the assessment of the trade-off between economic efficiency gains and biodiversity conservation in a fishery. It introduces a biodiversity index, and develops an application of the method couched on Namibian hake fisheries. Results from the illustrative example show that the opportunity cost of achieving a "near perfect" level of biodiversity conservation is high. On a more positive note, however, the results also indicate that it is possible (through appropriate management action) to achieve reasonably high biodiversity levels without losing most of the potential economic gains.
Orexin A and B levels in the hypothalamus of female rats: the effects of the estrous cycle and age.

OBJECTIVE Orexins have been implicated in the regulation of several physiological functions including reproduction, energy balance and vigilance state. For successful reproduction, the precisely timed hormonal secretions of the estrous cycle must be combined with appropriate nutritional and vigilance states. The steroid- and nutritional state-dependent modulation of LH release by orexins, as well as an increase of vigilance, suggest that orexins may co-ordinate these functions in the course of the estrous cycle. DESIGN We studied the brain tissue levels of orexins in the course of the estrous cycle in young and middle-aged rats. Young cycling rats (3 months old) and irregularly/non-cycling (7-9 months old) female rats were inspected for vaginal smears and serum hormone levels. METHODS Tissue concentrations of orexin A and B were measured in the hypothalamus and lateral hypothalamus on different days of the estrous cycle. RESULTS Orexin A concentration in the hypothalamus of young cycling rats was higher on the day of proestrus 5-6 h after the lights were switched on than on the other days of the estrous cycle at the same circadian time. Orexin B concentration was higher on both the day of proestrus and the day of estrus as compared with the days of diestrus. The hypothalamic concentrations of both orexin A and B in the non-cycling middle-aged rats were lower than those in cycling rats on the days of proestrus and estrus. CONCLUSIONS We have concluded that the high hypothalamic concentration of orexins on the day of proestrus may contribute to the LH and prolactin surges. High orexin A levels may also contribute to the decreased amount of sleep on the day of proestrus.