Miracle-dz/UniFAR-FTUs huggingface dataset:
Incremental learning of aspect model on streaming documents

This research is to propose an IR related technique, the incremental aspect model (ISM), which not only uncovers latent aspects from the collected documents but also adapts the aspect model on streaming documents chronologically. ISM includes two stages: in Stage I, probabilistic latent semantic indexing (PLSI) technique is used to build a primary aspect model; and in Stage II, with out-of-date data removing and new data folding-in, the aspect model can be expanded using the derived spectral method if new aspects significantly exist. Two experiments on text clustering tasks are conducted accordingly. Results show the ISM has robust performance in terms of its incremental learning ability.
Reconsidering the Sedentary Behaviour Paradigm

Aims Recent literature has posed sedentary behaviour as an independent entity to physical inactivity. This study investigated whether associations between sedentary behaviour and cardio-metabolic biomarkers remain when analyses are adjusted for total physical activity. Methods Cross-sectional analyses were undertaken on 4,618 adults from the 2003/04 and 2005/06 U.S. National Health and Nutrition Examination Survey. Minutes of sedentary behaviour and moderate-to-vigorous physical activity (MVPA), and total physical activity (total daily accelerometer counts minus counts accrued during sedentary minutes) were determined from accelerometry. Associations between sedentary behaviour and cardio-metabolic biomarkers were examined using linear regression. Results Results showed that sedentary behaviour was detrimentally associated with 8/11 cardio-metabolic biomarkers when adjusted for MVPA. However, when adjusted for total physical activity, the associations effectively disappeared, except for C-reactive protein, which showed a very small, favourable association (β = −0.06) and triglycerides, which showed a very small, detrimental association (β = 0.04). Standardised betas suggested that total physical activity was consistently, favourably associated with cardio-metabolic biomarkers (9/11 biomarkers, standardized β = 0.08–0.30) while sedentary behaviour was detrimentally associated with just 1 biomarker (standardized β = 0.12). Conclusion There is virtually no association between sedentary behaviour and cardio-metabolic biomarkers once analyses are adjusted for total physical activity. This suggests that sedentary behaviour may not have health effects independent of physical activity.
An Efficient Near-Duplicate Video Shot Detection Method Using Shot-Based Interest Points

We propose a shot-based interest point selection approach for effective and efficient near-duplicate search over a large collection of video shots. The basic idea is to eliminate the local descriptors with lower frequencies among the selected video frames from a shot to ensure that the shot representation is compact and discriminative. Specifically, we propose an adaptive frame selection strategy called furthest point voronoi (FPV) to produce the shot frame set according to the shot content and frame distribution. We describe a novel strategy named reference extraction (RE) to extract the shot interest descriptors from a keyframe with the support of the selected frame set. We demonstrate the effectiveness and efficiency of the proposed approaches with extensive experiments.
Shaping Edits, Creating Fractals

We investigated physical changes over three versions in the production of the short historical drama, Woman with an Editing Bench (2016, The Physical TV Company). Pearlman, the film’s director and editor, had also written about the work that editors do to create rhythms in film (Pearlman 2016), and, through the use of computational techniques employed previously (Cutting et al. 2018), we found that those descriptions of the editing process had parallels in the physical changes of the film as it progressed from its first assembled form, through a fine cut, to the released film. Basically, the rhythms of the released film are not unlike the rhythms of heartbeats, breathing, and footfalls—they share the property of “fractality. ” That is, as Pearlman shaped a story and its emotional dynamics over successive revisions, she also (without consciously intending to do so) fashioned several dimensions of the film— shot duration, motion, luminance, chroma, and clutter—so as to make them more fractal.
Predicting eBay listing conversion

At eBay Market Place, listing conversion rate can be measured by number of items sold divided by number of items in a sample set. For a given item, conversion rate can also be treated as the probability of sale. By investigating eBay listings' transactional patterns, as well as item attributes and user click-through data, we developed conversion models that allow us to predict a live listing's probability of sale. In this paper, we discuss the design and implementation of such conversion models. These models are highly valuable in analysis of inventory quality and ranking. Our work reveals the uniqueness of sales-oriented search at eBay and its similarity to general web search problems.
Study on wireless underground sensor networks for remote irrigation monitoring system

Wireless underground sensor networks (WUSN) has wide applications in environmental information monitoring. It plays a vital role in the handling and management of water resources for irrigation. Because it prevents radio interference, improves real-time acquisition of information and reduces energy consumptions. In this work, WUSN was used to collect soil temperature and moisture information of an irrigation system. The base station used the sensor nodes to collect the data in a particular area. All nodes in the networks were the same and energies were constrained. According to the schedule, WUSN nodes turn on or off their radio module to save energy. When the collected data was less than the threshold value, the base station would inform the controller perform a motor control action through setting the corresponding. In this paper, system used data fusion method for saving energy to send collected data to the base station. The testing showed that the system was successfully implemented on a realtime remote monitoring for irrigation. The result was a low cost, highly reliable and simple infrastructure for the collection of soil data over a distributed area in agricultural environments.
Widespread but regionally specific effects of experimenter‐ versus self‐administered morphine on dendritic spines in the nucleus accumbens, hippocampus, and neocortex of adult rats

We studied the effects of self‐administered (SA) vs. experimenter‐administered (EA) morphine on dendritic spines in the hippocampal formation (CA1 and dentate), nucleus accumbens shell (NAcc‐s), sensory cortex (Par1 and Oc1), medial frontal cortex (Cg3), and orbital frontal cortex (AID) of rats. Animals in the SA group self‐administered morphine in 2‐h sessions (0.5 mg/kg/infusion, i.v.) for an average of 22 sessions and animals in the EA group were given daily i.v. injections of doses that approximated the total session dose for matched rats in Group SA (average cumulative dose/session of 7.7 mg/kg). Control rats were given daily i.v. infusions of saline. One month after the last treatment the brains were processed for Golgi‐Cox staining. In most brain regions (Cg3, Oc1, NAcc‐s) morphine decreased the density of dendritic spines, regardless of mode of administration (although to a significantly greater extent in Group SA). However, only SA morphine decreased spine density in the hippocampal formation and only EA morphine decreased spine density in Par1. Interestingly, in the orbital frontal cortex morphine significantly increased spine density in both Groups SA and EA, although to a much greater extent in Group SA. We conclude: 1) Morphine has persistent (at least 1 month) effects on the density of dendritic spines in many brain regions, and on many different types of cells (medium spiny neurons, pyramidal cells, and granule cells); 2) The effect of morphine on spine density (and presumably synaptic organization) varies as a function of both brain region and mode of drug administration; and 3) The ability of morphine to remodel synaptic inputs in a regionally specific manner may account for the many different long‐term sequelae associated with opioid use. Synapse 46:271–279, 2002. © 2002 Wiley‐Liss, Inc.
Variable Precision Rough Set Model Based on Uncertain Measure

By confining the parametera in confident threshold 12 1 a £ < in rough set model based on uncertain measure, variable precision rough set model based on uncertain measure is given. The lower approximation and upper approximation are defined in approximation uncertainty space, and their properties are discussed. © 2011 World Academic Press, UK. All rights reserved.
Topic 1: Energy Efficient Cryptographic Algorithms for Low-Power Wireless Devices: Wireless, mobile, and limited battery-power devices like PDAs

Wireless, mobile, and limited battery-power devices like PDAs with built in WiFi, Cellular, and VoIP accesses are becoming popular now days. Security is also utmost important to these services. However, deploying security mechanisms for these devices and services consumes huge amount of power. While the processing power, memory and network bandwidth of today’s’ mobile and wireless devices are sufficient (rather increasing exponentially [Moore’s law]), their battery power is increasing at a modest pace (linearly). These devices can quickly drain their batteries and become useless. Hence, a security protocol running over these devices should utilize energy to the minimum possible extent. During a secure wireless session the main sources of energy consumption are, transmission and reception of packets (size of actual data transfer), number and size of messages required for establishing the session, and cryptographic computations (number of operational rounds, key sizes, choice of ciphers (symmetric, asymmetric, hash etc.), modes of cipher (ECB, CBC, CFB etc.), etc.) in that order. One method to reduce energy consumption is by judiciously selecting a combination of security primitives in a single session. For example, [1] has shown that for encrypting smaller data packets, ECC-3DES-SHA is more energy efficient where as for encrypting bigger data packets, RSA-RC5-SHA consumes less energy. Another example could be assuming RC4 and AES with 128 bit keys providing similar security levels, for smaller packets it is better to use AES and for bigger packets it is RC4. Second method to lower energy consumption is to modify (rather optimize) the standard security protocols themselves. For example, wherever security needs are not that stringent, energy savings can be obtained by switching to smaller keys [1], and if client authentication is not performed, it is better to use RSA for SSL handshake in place of ECC. Another example could be employing a Kerberos client on a WLAN may result in a larger consumption of energy as it requires at least six messages before it can access a network service. Protocol standards that allow “plug-in” of any security transaction may be used for modifying them like Extensible Authentication Protocol (EAP) [2] allows. One more example of optimizing a handshake (session negotiation) protocol is given in [3] where they use adaptive handshake to establish a new secure session. Third method of reducing energy consumption is by employing hardware acceleration of crypto-mechanisms (FPGA implementation of AES) [3]. However, it is extremely difficult to provide customized hardware for encryption which would mean more gates and more power consumption. Also, customized encryption hardware is vulnerable to differential power analysis attack. So, a careful investigation is needed before making available encryption through hardware implementations over the mobile wireless devices.
Analysis and Study of Security Mechanisms inside Linux Kernel

It's very important to analyze and study security mechanisms provided by an operating system. Currently, Linux is becoming one of the most popular operating systems because of its excellent performance and open source philosophy. Since lots of individuals and enterprises are switching to Linux, access control mechanism of Linux has been improved from time to time for new security requirements. For instance, SELinux sub-system can enforce a policy based Mandatory Access Control (MAC) and provide flexible security policy configuration. However, there are still some defects in current Linux access control mechanism. In this paper, available Linux security mechanisms are analyzed at first, while permission division principle is summarized. Then a new MAC mechanism is devised based on some popular information security models such as RBAC, DTE and etc and it is characteristic of cross-layered permission assignment. Finally, a corresponding prototype system is implemented and further research directions are summarized.
Word-level segmentation in printed and handwritten documents

Optical Character Recognition techniques for printed and handwritten text are quite different. Therefore, before any further document preprocessing, it is necessary to separate these text types. A fundamental step for this separation is the segmentation. In this paper we address the problem of segmentation these documents into words. The proposed system was tested in two public image databases. Many measures of efficiency were computed achieving correct separation results above 96% with respect to mean precisions and 97% for average of the accuracies. Although it would be very important compare our results with some other algorithm for the same purpose, on this moment it is impossible because there is no work in the same purpose were such comparison could be done.
Change Facilitators: In Search of Understanding Their Role. Research on the Improvement Process in Schools and Colleges.

Rutherford, William L. ; And Others Change Facilitators: In Search of Understanding Their Role. Research on the. Improvement Process in schools and Colleges. Texas Univ., Austin. Research and Development Center for Teacher Education. National Inst. of Education (ED), Washington, DC. R&DCTE-R-3159 Apr 83 140p. ; For related documents, see EA 017 310-311 and EA 017 320-324. Publications Sales, Research and Development Center for Teacher Education, EDA 3.203, University of Texas at Austin, Austin, TX. 78712 -128.8 ($4.50). Information Analyses (070)
A BRIEF EVALUATION OF INFLATION TARGETING IN ROMANIA ENVISAGING THE EURO ADOPTION

This paper aims to present a clear, pertinent and realistic description of the actual results and perspectives of the application of inflation targeting in Romania, in the context of two major events – the financial crises and the Euro adoption process. The paper is structured based on the following elements: - the implementation of the inflation targeting monetary strategy – arguments, advantages, technical elements; -the institutional changes; - the decisional and operational framework of the monetary policy; - a brief assessments of the results of implementing the new monetary policy strategy – inflation targeting.
Health Risk Assessment of Heavy Metals in Rice to the Population in Zhejiang, China

Environmental pollution with toxic heavy metals can lead to the possible contamination of the rice. Selected metals (As, Cd, Hg and Pb) and their accumulation in rice collected from Zhejiang, China were analyzed to evaluate the potential health risk to the local adults and children. The mean levels found in rice were as follows: As, 0.080 mg/kg; Cd, 0.037 mg/kg; Hg, 0.005 mg/kg; Pb, 0.060 mg/kg. The estimated daily intakes (EDIs) were calculated in combination of the rice consumption data. The mean intakes of As, Cd, Hg and Pb through rice were estimated to be 0.49, 0.23, 0.03 and 0.37 µg/kg bw/day for adults, and 0.34, 0.29, 0.04 and 0.47 µg/kg bw/day for children. The 97.5th percentile (P97.5) daily intakes of As, Cd, Hg and Pb were 1.02, 0.64, 0.37 and 1.26 µg/kg bw/day for adults, and 0.63, 0.83, 0.47 and 1.63 µg/kg bw/day for children. The risk assessment in mean levels showed that health risk associated with these elements through consumption of rice was absent. However, estimates in P97.5 level of Cd and Pb for children, and Hg for adults have exceeded the respective safe limits.
Automatic Trading Agent. RMT based Portfolio Theory and Portfolio Selection

Portfolio theory is a very powerful tool in the modern investment theory. It is helpful in estimating risk of an investor's portfolio, which arises from our lack of information, uncertainty and incomplete knowledge of reality, which forbids a perfect prediction of future price changes. Despite of many advantages this tool is not known and is not widely used among investors on Warsaw Stock Exchange. The main reason for abandoning this method is a high level of complexity and immense calculations. The aim of this paper is to introduce an automatic decision - making system, which allows a single investor to use such complex methods of Modern Portfolio Theory (MPT). The key tool in MPT is an analysis of an empirical covariance matrix. This matrix, obtained from historical data is biased by such a high amount of statistical uncertainty, that it can be seen as random. By bringing into practice the ideas of Random Matrix Theory (RMT), the noise is removed or significantly reduced, so the future risk and return are better estimated and controlled. This concepts are applied to the Warsaw Stock Exchange Simulator this http URL. The result of the simulation is 18 % level of gains in comparison for respective 10 % loss of the Warsaw Stock Exchange main index WIG.
A temperature-sensitive mutation in the nodal-related gene cyclops reveals that the floor plate is induced during gastrulation in zebrafish

The floor plate, a specialized group of cells in the ventral midline of the neural tube of vertebrates, plays crucial roles in patterning the central nervous system. Recent work from zebrafish, chick, chick-quail chimeras and mice to investigate the development of the floor plate have led to several models of floor-plate induction. One model suggests that the floor plate is formed by inductive signalling from the notochord to the overlying neural tube. The induction is thought to be mediated by notochord-derived Sonic hedgehog (Shh), a secreted protein, and requires direct cellular contact between the notochord and the neural tube. Another model proposes a role for the organizer in generating midline precursor cells that produce floor plate cells independent of notochord specification, and proposes that floor plate specification occurs early, during gastrulation. We describe a temperature-sensitive mutation that affects the zebrafish Nodal-related secreted signalling factor, Cyclops, and use it to address the issue of when the floor plate is induced in zebrafish. Zebrafish cyclops regulates the expression of shh in the ventral neural tube. Although null mutations in cyclops result in the lack of the medial floor plate, embryos homozygous for the temperature-sensitive mutation have floor plate cells at the permissive temperature and lack floor plate cells at the restrictive temperature. We use this mutant allele in temperature shift-up and shift-down experiments to answer a central question pertaining to the timing of vertebrate floor plate induction. Abrogation of Cyc/Nodal signalling in the temperature-sensitive mutant embryos at various stages indicates that the floor plate in zebrafish is induced early in development, during gastrulation. In addition, continuous Cyclops signalling is required through gastrulation for a complete ventral neural tube throughout the length of the neuraxis. Finally, by modulation of Nodal signalling levels in mutants and in ectopic overexpression experiments, we show that, similar to the requirements for prechordal plate mesendoderm fates, uninterrupted and high levels of Cyclops signalling are required for induction and specification of a complete ventral neural tube.
Aboriginal secondary education: Non completion and returns

I use 2001 Canadian Public Use Microdata Files (PUMF) Census data to assess t\VO dimensions of Aboriginal educational attainment: (1) what proportion of Aboriginals fail to complete high school; and (2) what is the return to different levels of education for Aboriginals. I find that Aboriginals, for certain age groups, are two times more likely than non Aboriginals to leave high school before completion. Further, I find that in terms of high school completion within the Aboriginal population, registered Indians fare worst, band members better, those with self reported Aboriginal identity better still, and those with Aboriginal ethnic ancestry perform the best. I also find that the returns to high school education are higher for Aboriginals than for the white control group, and that this return varies significantly by Aboriginal group, gender, and census metropolitan area. Further, for certain Aboriginal groups the earnings return to schooling is greater than the income return, suggesting that government transfers reduce the incentive for Aboriginals to pursue further education.
WW domain-containing oxidoreductase in neuronal injury and neurological diseases

The human and mouse WWOX/Wwox gene encodes a candidate tumor suppressor WW domain-containing oxidoreductase protein. This gene is located on a common fragile site FRA16D. WWOX participates in a variety of cellular events and acts as a transducer in the many signal pathways, including TNF, chemotherapeutic drugs, UV irradiation, Wnt, TGF-β, C1q, Hyal-2, sex steroid hormones, and others. While transiently overexpressed WWOX restricts relocation of transcription factors to the nucleus for suppressing cancer survival, physiological relevance of this regard in vivo has not been confirmed. Unlike many tumor suppressor genes, mutation of WWOX is rare, raising a question whether WWOX is a driver for cancer initiation. WWOX/Wwox was initially shown to play a crucial role in neural development and in the pathogenesis of Alzheimer's disease and neuronal injury. Later on, WWOX/Wwox was shown to participate in the development of epilepsy, mental retardation, and brain developmental defects in mice, rats and humans. Up to date, most of the research and review articles have focused on the involvement of WWOX in cancer. Here, we review the role of WWOX in neural injury and neurological diseases, and provide perspectives for the WWOX-regulated neurodegeneration.
Regulatory Reform and Standardisation : The Case of the British Rail Industry

The purpose of this article is to show that the very controversial regulatory reform of the British railways had a huge impact on the modernisation of the rolling stock fleet and more particularly on its standardisation. Using transaction cost economics hypothesis, we point out that the reform has led agents to transform the characteristics of the assets they exchange. By imposing a market structure to actors of the new system, the reform has indeed driven them to make standard investments. Thus, this paper has a twofold significance. On the first hand, by analysing the adaptation process followed by agents when governance structure is constrained, it reminds that assets specificity is an endogenous variable. On the other hand, it provides a dynamic version of Williamson’s heuristic model (1985). ATOM, Université Panthéon-Sorbonne, 106-112 Bd de l’Hôpital, 75013 Paris, France E-mail : yvrande@univ-paris1.fr