Miracle-dz/UniFAR-FTUs huggingface dataset:
Real time calibration for RSS indoor positioning systems

Due to the random characteristics of the indoor propagation channel, received signal strength-based localization systems usually need to be manually calibrated once and again to guarantee their best performance. Calibration processes are costly in terms of time and resources, so they should be eliminated or reduced to a minimum. In this direction, this paper presents an optimization algorithm to automatically calibrate a propagation channel model by using a Least Mean Squares technique: RSS samples gathered in a number of reference points (with known positions) are used by a LMS algorithm to calculate those values for the channel model's constants that minimize the error computed by a hyperbolic triangulation positioning algorithm. Preliminary results on simulated and real data show that the localization error in distance is effectively reduced after a number of training samples. The LMS algorithm's simplicity and its low computational and memory costs make it adequate to be used in real systems.
A Convex Approach to Minimal Partitions

We describe a convex relaxation for a family of problems of minimal perimeter partitions. The minimization of the relaxed problem can be tackled numerically: we describe an algorithm and show some results. In most cases, our relaxed problem finds a correct numerical approximation of the optimal solution: we give some arguments to explain why it should be so and also discuss some situations where it fails.
Task Static Single Assignment (T-SSA) and Its Use in Safe Program Parallelization (short paper)

The mechanism of copy-on-write is recently used in speculative and deterministic parallel systems. In these systems, copy-on-write happens when a task modifies a variable for the first time. At the program level, the copying is a form of renaming. This paper extends the formalism of static single assignment (SSA) to introduce a program representation called task static single assignment (T-SSA). The new representation integrates the copy-on-write renaming across tasks with the conventional SSA renaming within a task. This position paper defines the T-SSA form and demonstrates its use in making copy-on-write explicit, automatic, and automatically enhanced for safe program parallelization.
Collaborative Machine Translation Service for Scientific texts

French researchers are required to frequently translate into French the description of their work published in English. At the same time, the need for French people to access articles in English, or to international researchers to access theses or papers in French, is incorrectly resolved via the use of generic translation tools. We propose the demonstration of an end-to-end tool integrated in the HAL open archive for enabling efficient translation for scientific texts. This tool can give translation suggestions adapted to the scientific domain, improving by more than 10 points the BLEU score of a generic system. It also provides a post-edition service which captures user post-editing data that can be used to incrementally improve the translations engines. Thus it is helpful for users which need to translate or to access scientific texts.
Modeling of Compound Profiling Experiments Using Support Vector Machines

Profiling of compounds against target families has become an important approach in pharmaceutical research for the identification of hits and analysis of selectivity and promiscuity patterns. We report on modeling of profiling experiments involving 429 potential inhibitors and a panel of 24 different kinases using support vector machine (SVM) techniques and naïve Bayesian classification. The experimental matrix contained many different activity profiles. SVM predictions achieved overall high accuracy due to consistently low false‐positive and consistently high true‐negative rates. However, predictions for promiscuous inhibitors were affected by false‐negative rates. Combined target‐based SVM classifiers reached or exceeded the performance of SVM profile prediction methods and were superior to Bayesian classification. The classifiers displayed different prediction characteristics including diverse combinations of false‐positive and true‐negative rates. Predicted and experimentally observed compound activity profiles were compared in detail, revealing activity patterns modeled with different accuracy.
Performance characteristics of semi-dry anaerobic digestion of cow dung and pig manure mixture under psychrophilic condition.

Low growth rate of anaerobic microbes during psychrophilic condition (<20 o C) affects anaerobic digestion process severely. It is also observed that the constituent bacterial consortiums are less active at low ambient temperatures and consequently it causes the drop off in the efficiency of anaerobic fermentation process. The performance of bioreactors even more decreases with the increment in solid content in the feedstocks. It is therefore great challenge to stabilize organic solid waste economically in cold and hilly regions. The purpose of this single- stage batch cultured investigation was to assess the effect of increment in inoculum amount on semi-dry anaerobic digestion process of cow dung with excess sludge at 15±1 o C for 84 days. The biogas yields for 15%, 30%, 45% and 60% inoculum based on wet- weight were 13.33, 19.37, 23.99, and 21.64 L/kg with methane of 8.41, 12.19, 15.15 and 13.66 L/kg, respectively. Moreover, the specific methane yield was highest when the psychrophilic semi- dry anaerobic digestion process was inoculated with a mass of 45% of the substrate.
Abuse of people with dementia by family carers: representative cross sectional survey

Objective To determine the prevalence of abusive behaviours by family carers of people with dementia. Design Representative cross sectional survey Setting Community mental health teams in Essex and London. Participants 220 family carers of people newly referred to secondary psychiatric services with dementia who were living at home. Main outcome measure Psychological and physical abuse (revised modified conflict tactics scale). Results 115 (52%, 95% confidence interval 46% to 59%) carers reported some abusive behaviour and 74 (34%, 27% to 40%) reported important levels of abuse. Verbal abuse was most commonly reported. Only three (1.4%) carers reported occasional physical abuse. Conclusions Abusive behaviour by family carers towards people with dementia is common, with a third reporting important levels of abuse and half some abusive behaviour. We found few cases of physical or frequent abuse, although those with the most abusive behaviour may have been reluctant to report it.
Bayesian inference on compact binary inspiral gravitational radiation signals in interferometric data

In this paper we present a description of a Bayesian analysis framework for use with interferometric gravitational radiation data in search of binary neutron star inspiral signals. Five parameters are investigated, and the information extracted from the data is illustrated and quantified. The posterior integration is carried out using Markov chain Monte Carlo (MCMC) methods. Implementation details include the use of importance resampling for improved convergence and informative priors reflecting the conditions expected for realistic measurements. An example is presented from an application using realistic, albeit fictitious, data. We expect that these parameter estimation techniques will prove useful at the end of a binary inspiral detection pipeline for interferometric detectors like LIGO or Virgo.
fiParse - A Generic Parser for FIPA-Compliant Agent Communication

Software Agents communicate by exchanging messages formulated in an Agent Communication Language. In order to facilitate communication and understanding of each other, the domain of discourse of heterogeneous agents should be described in an explicit ontology. Both, the Agent Communication Language and the ontology definition, are independent of the implementation of agents. Furthermore the content of messages should be formulated in a standardized content language. So the content of messages and the representations of ontologies have to be transformed into a format that can be interpreted by an agent. Today many agents are implemented using Java technology. This paper presents a generic parser called fiParse that enables developers of Java-based agents to create representations of ontologies, namely Java classes and standardised message content that can be interpreted by their agents and is compliant to the FIPA standards. This works This is a draft of the paper published in: P. Kokol (Editor), Proceedings of the International Conference on Software Engineering, 2005 http://www.actapress. com/Abstract.aspx? paperId=19134
Innovative materials tailored for advanced micro-optic applications

The handling of a continuously increasing amount of data leads to a strong need for high-speed short-range connections. Conventional Cu technology between chips on a board is limited. Optical interconnects will dominate the market, since they can overcome the limitations. One of the issues for materials used, e.g., for waveguides embedded in printed circuit boards (PCBs) is the compatibility with standard epoxies used for PCBs during the entire board fabrication process. Materials applied for optical interconnects should be mechanically and optically reliable, and also allow low-cost production. From the material production side, the process should be easy to up-scale. Therefore, anticipatory research strategy and suitable tailoring is asked for. The handling of light in the UV and visible range often requires the use of specially designed materials. Most polymer materials show an increased yellowing effect upon being exposed to shorter wavelength light. The major influence on the absorption in the UV and visible range of a UV curable material is related to the UV initiator, beside any other chromophores formed mainly during the exposure. Different material approaches will be presented which fulfil the requirements for highly sophisticated applications in optics / optical packaging technology. Firstly, an epoxy-based material system for optical chip-to-chip interconnection will be introduced. Secondly, the adaptation of a UV patternable inorganic-organic hybrid material (ORMOCER®) originally developed for waveguide applications in the data and telecom regime, will be discussed with respect to applications in the visible regime. Spectroscopy and UV-DSC measurements were carried out to investigate the influence of standard photoinitiators on the optical properties for an ORMOCER® system suitable for microoptic applications. The results show that the resulting material properties were significantly improved by exchange of the initiators compared to the originally incorporated one.
Last line of resistance or a golden opportunity: Australian trade union responses to globalization

This contribution concentrates on the response of the trade union movement in Australia to globalization. Firstly, it outlines the evidence of the effects of globalization on labour markets, including the impact on wage inequaliry employment securiry and collective bargaining. Secondly, it looks at the strategic union response to the effects of globalization in terms of trade policy responses, international labour cooperation and traditional industrial campaigns on globalization issues. It suggests that unions can employ a combination of international and domestic strategies to deal with globalization.
Depletion of New Neurons by Image Guided Irradiation

Ionizing radiation continues to be a relevant tool in both imaging and the treatment of cancer. Experimental uses of focal irradiation have recently been expanded to studies of new neurons in the adult brain. Such studies have shown cognitive deficits following radiation treatment and raised caution as to possible unintentional effects that may occur in humans. Conflicting outcomes of the effects of irradiation on adult neurogenesis suggest that the effects are either transient or permanent. In this study, we used an irradiation apparatus employed in the treatment of human tumors to assess radiation effects on rat neurogenesis. For subjects we used adult male rats (Sprague-Dawley) under anesthesia. The irradiation beam was directed at the hippocampus, a center for learning and memory, and the site of neurogenic activity in adult brain. The irradiation was applied at a dose-rate 0.6 Gy/min for total single-fraction, doses ranging from 0.5 to 10.0 Gy. The animals were returned to home cages and recovered with no sign of any side effects. The neurogenesis was measured either 1 week or 6 weeks after the irradiation. At 1 week, the number of neuronal progenitors was reduced in a dose-dependent manner with the 50% reduction at 0.78 Gy. The dose–response curve was well fitted by a double exponential suggesting two processes. Examination of the tissue with quantitative immunohistochemistry revealed a dominant low-dose effect on neuronal progenitors resulting in 80% suppression of neurogenesis. This effect was partially reversible, possibly due to compensatory proliferation of the remaining precursors. At higher doses (>5 Gy) there was additional, nearly complete block of neurogenesis without compensatory proliferation. We conclude that notwithstanding the usefulness of irradiation for experimental purposes, the exposure of human subjects to doses often used in radiotherapy treatment could be damaging and cause cognitive impairments.
Induction of the Transcriptional Repressor Yin Yang-1 by Vascular Cell Injury

Yin Yang-1 (YY1) is a multifunctional transcription factor that can repress the expression of many growth factor, hormone, and cytokine genes implicated in atherogenesis. YY1 expression is activated in rat vascular smooth muscle cells shortly after injury. YY1 DNA binding activity paralleled elevated protein levels in the nucleus. Smooth muscle cell injury triggered the rapid extracellular release of immunoreactive fibroblast growth factor-2 (FGF-2). YY1 induction after injury was blocked by neutralizing antibodies directed against FGF-2. This growth factor increased YY1 mRNA and protein expression and stimulated YY1 binding and transcriptional activity. Overexpression of YY1 inhibited smooth muscle cell replication. Immunohistochemical analysis demonstrated YY1 staining in medial smooth muscle cells, coincident with FGF-2 expression. Proliferating cell nuclear antigen staining, in contrast, was confined mainly to the atherosclerotic intima. This is the first demonstration that YY1 is induced by either injury or FGF-2, is differentially expressed in normal and diseased human arteries, and that its overexpression inhibits vascular smooth muscle but not endothelial cell replication.
Detecting the golgi protein 73 of liver cancer with micro cantilever

Golgi protein 73 (GP73) is a potential serum biomarker used in diagnosing human hepatocellular carcinoma (HCC). Compared to alpha-fetoprotein, detection of GP73 is expected to give better sensitivity and specificity and thus offers a better method for diagnosis of HCC at an early stage. In this paper, silicon nitride microcantilever was used to detect GP73. The cantilever was modified through many steps to contain antibody of GP73. The result shows that the cantilever can be used as a label-free sensor to detect this kind of biomarker.
Simultaneous multislice spectral‐spatial excitations for reduced signal loss susceptibility artifact in BOLD functional MRI

Simultaneous multislice (SMS) imaging can significantly increase image acquisition rates and improve temporal resolution and contrast in gradient‐echo blood oxygen level–dependent (BOLD) functional MRI (fMRI) experiments. Through‐plane signal loss due to B0 inhomogeneities at air–tissue interfaces limits fMRI of structures near the nasal cavity and ear canals. This study implemented spectral–spatial (SPSP) radiofrequency pulses for reduced through‐plane signal loss across multiple simultaneously excited slices.
Bridging the Gap Between Centralised and Decentralised Multi-Agent Pathfinding

lem into a series of searches [Silver, 2005; Wang and Botea, 2008]. Even though their CPU and memory requirements are significantly lower, existing decentralized methods, including Silver’s and Wang and Botea’s, are incomplete and provide no criteria to distinguish between problems that can successfully be solved and problems where such algorithms fail. Further, no guarantees are given with respect to the running time, the memory requirements, and the quality of the computed solutions. Addressing such limitations is the central motivation for our recent and current work on identifying a class of problems and developing an algorithm that is complete on this class of problems, with guarantees of low-polynomial running time, memory requirements and solution length [Wang and Botea, 2009]. This is the starting point of a series of studies that we have planned on investigating the theoretical properties of multi-agent path planning problems. We also address the practical issues by developing algorithms that work well in practice and that are complete for well specified classes of problems.
Improving Wireless Access to the Internet By Extending the Client / Server Model

We propose a new approach to structuring Internet applications for wireless clients that is based on extending the client/server model. The idea is to extend the client or server by introducing an intermediate vantage point of control between them. This enables special protocol support to effectively deal with the wireless link, and supports remote processing of server data so that it may be tailored specifically for that client. This control point is embodied by middleware that is layered above the network, and therefore does not require changes to the Internet's basic protocols nor to those of its underlying physical networks. We develop the model, and then describe ongoing research that focuses on various practical aspects and shows how we are realizing the model in useful working systems.
Education Services Mashup: Examining the Impact of Web Design Features on User Trust

Online trust is growing in importance. To-date, most research studies have been conducted only on the initial or final stages of user trust on the use of Web-based systems or support services. In this paper, a description is made on the determinants and the level of potential students’ trust on the entire lifecycle of using a Web-based institution applications status tracking system for an online educational services portal. It examines the potential students’ perception of trust on three Web-based system design constructs that could affect the level of overall trust on the subsequent use of the full range of portal services. A conceptual framework links potential students’ perceptions of website characteristics and trust towards their behavioural intents to interact with a portal. The investigation was conducted through a Web-based survey among a group of potential students on the respective level of trust on student relationship management, website design, and security/privacy related issues. Based on the findings, it was found that the availability of support services could strengthen the relationship between student relationship management and online trust. Similarly, the perceived usefulness and ease of use of a website coupled with the consistent graphical user interface features could strengthen the relationship between website navigation and online trust. The security/privacy consideration is also found to have a positive effect on online trust. The results also show that initial interactions with the potential students could serve as a launching pad for commencing and maintaining a long-term relationship between students and an educational services portal. It is felt that the research findings could offer useful guidelines for website design and portal management to enhance the potential students’ trust on the use of any online educational services.
Enhancing Security of EPCglobal Gen-2 RFID Tag against Traceability and Cloning

In this paper, we present a synchronization-based communication protocol for RFID devices. We focus on the EPCGlobal Class-1 Gen-2 RFID tag which supports only simple cryptographic primitives like Pseudo-random Number Generator (PRNG) and Cyclic Redundancy Code (CRC). Our protocol is secure in a sense that it prevents the cloned tags and malicious readers from impersonating and abusing legitimate tags, respectively. In addition, our protocol provides that each RFID tag emits a different bit string (pseudonym) when receiving each and every reader’s query. Therefore, it makes tracking activities and personal preferences of tag’s owner impractical to provide the user’s privacy.
Signal Detection for OFDM and DS-CDMA with Gradient and Blind Source Separation Principles

-Signal recovery mechanisms for both Orthogonal Frequency Division Multiplexing (OFDM) and Direct Sequence Code Division Multiple Access (DS-CDMA) with the assistance of principles of Blind Source Separation (BSS) and Gradient Algorithms (GAs) are presented. Elimination or reduction of undesirable influences encountered with in the wireless interface is targeted using a set of filter coefficients. Four energy functions are used in deriving them. Time correlation properties of the channel are used as advantages in introducing the energy functions and they are tried to be justified followed by a performance evaluation. All the schemes are tested with synchronous downlink system models. Simulations are carried out under slow fading channel conditions with a receiver containing Equal Gain Combining (EGC) and BSS algorithms. It could be noted that, better performance for this predominant air interface communication techniques can be achieved with this combined schemes. It is important grasp the fact that, these schemes can be promoted as low complexity simple matrices based processing mechanisms.
Eureka! Aerogel capture of meteoroids in space

Light gas gun studies have shown that 6 km/s solid mineral and glass test particles can be successively captured in 0.05 g cm(exp -3) aerogel without severe heating or fragmentation. In spite of this work, there has been uncertainty in the performance of aerogel for hypervelocity capture of real meteoroids. Natural impacts differ from simulations in that the particles are likely to be structurally weak and they typically impact at higher velocity that can be simulated in the laboratory. We are fortunate now to have had two successful capture experiments using aerogel exposed in space. These experiments provide fundamental data for the assessment of the value of silica aerogel for capture of hypervelocity meteoroids from spacecraft. The first experiment used 0.02 g cm(exp -3) aerogel flown on the lid of a Shuttle Get Away Special canister. During its 9 day exposure, the 0.165 m(exp 2) of aerogel in this Sample Return Experiment (SRE) captured two long 'carrot-shaped' tracks and one highly fractured bowl shaped 'crater'. The second collection was with 0.04 m(exp 2) of 0.05 g cm(exp -3) aerogel exposed on ESA's Eureca freeflying spacecraft that was exposed for 11 months before recovery by the Shuttle. The Eureca aerogel exposure consisted of four 10x10 cm module trays that were part of the TiCCE meteoroid collector built by the University of Kent at Canterbury. To date we have found ten 'carrot-shaped' tracks and two 'craters' on this experiment. The longest tracks in both exposures are over 2 mm long. Two of the TiCCE modules had a 0.1 micron Al film suspended a millimeter above the aerogel. On these modules several of the projectiles fragmented during passage through the film producing fields of carrot shaped tracks from the resulting miniature 'meteor' shower. Most of the tracks in these showers have observable particles at their ends. We have extracted one of the carrot track meteoroids and mounted it in epoxy for sectioning. So far the examination of these 14 impacts suggests that low density aerogel is a magic and highly effective media for intact capture of hypervelocity particles in space.