Miracle-dz/UniFAR-FTUs huggingface dataset:
Request Sequencing : Optimizing Communication for the Grid 0

As we research to make the use of Computational Grids seamless, the allocation of resources in these dynamic environments is proving to be very unwieldy. In this paper, we introduce, describe and evaluate a technique we call request sequencing. Request sequencing groups together requests for Grid services to exploit some common characteristics of these requests and minimize network traÆc. The purpose of this work is to develop and validate this approach. We show how request sequencing can a ect scheduling policies and enable more expedient resource allocation methods. We also discuss some of the reasons for our design, o er the initial results and discuss issues that remain outstanding for future research.
Educational intervention on water intake improves hydration status and enhances exercise performance in athletic youth

We aimed to evaluate whether an intervention program emphasizing in increased fluid intake can improve exercise performance in children exercising in the heat. Ninety‐two young athletes participated in the study (age: 13.8 ± 0.4 years, weight: 54.9 ± 1.5 kg). Thirty‐one (boys: 13, girls: 18) children served as the control group (CON) and 61 (boys: 30, girls: 31) as the intervention (INT). Volunteers had free access to fluids. Hydration was assessed on the basis of first morning urine. A series of field tests were used to evaluate exercise performance. All tests occurred outdoors in the morning (mean ambient temperature=28 °C). After baseline testing, INT attended a lecture on hydration, and urine color charts were mounted in all bathrooms. Additionally, water accessibility was facilitated in training, dining and resting areas. Hydration status was improved significantly in the INT [USG: pre=1.031 ± 0.09, post=1.023 ± 0.012, P<0.05; urine osmolality (mOsm/kg water): pre=941 ± 30, post=782 ± 34, P<0.05], while no statistically significant changes were found in the CON [USG: pre=1.033 ± 0.011, post=1.032 ± 0.013, P>0.05; urine osmolality (mOsm/kg water) 970 ± 38 vs 961 ± 38, P>0.05]. Performance in an endurance run was improved significantly only in INT (time for 600 m: pre=189 ± 5 s, post=167 ± 4 s, P<0.05). Improving hydration status by ad libitum consumption of water can enhance performance in young children exercising in the heat.
Dynamic modeling of overload in scale free networks

We introduce a simple dynamic model to investigate the fragmentation of transport networks. The transport properties like as the size of largest connected cluster, the length of the minimum paths and the optimal paths between a pair of nodes of the network were evaluated upon continuously increasing the load on the system. We use two load insertion strategies: an uniform random distribution of loads and a Cohen-like immunization strategy (one node is selected with a uniform probability p and one of its first neighbours, randomly selected, receives the load). Both strategies may be classified as local strategies but the resulting effects are qualitatively different. Evaluating the physical quantities as a function of time we observe that for the random distribution strategy there is a crossover from a fully connected cluster to a non-connected state in the sense that all links become unavailable. On the other hand, following the Cohen-like strategy we found a sudden change in transport properties which is may be interpreted as a percolation-like transition induced by the cumulative process of load.
Effect of percutaneous transluminal coronary angioplasty on QT dispersion and heart rate variability parameters

Background The aim of the study was to analyse parameters reflecting the sympathovagal control of ventricular depolarisation and repolarisation [heart rate variability (HRV) and QT interval dispersion (QTd)] in patients undergoing elective percutaneous transluminal coronary angioplasty (PTCA), and determine whether HRV correlates with QT dispersion parameters. Methods The study consisted of 26 consecutive patients (16 men, 10 women) with single-vessel coronary artery disease (CAD) who underwent elective coronary angioplasty. HRV analyses of all subjects were obtained with the time- and frequency-domain methods. For frequency-domain analysis, low-frequency HRV (LF), high-frequency HRV (HF) and the LF:HF ratio were measured. For time-domain analysis, standard deviations of the normal-to-normal QRS intervals (SDNN) and square roots of the mean squared differences of successive N–N intervals (rMSSD) were obtained. QT intervals were also corrected for heart rate using the Bazett’s formula, and the corrected QT interval dispersion (QTcd) was then calculated. All measurements (HRV parameters and QTcd) were made before and immediately after PTCA. Results QTcd was significantly decreased after PTCA (52.2 ± 3.5 vs 42 ± 3.9 ms). SDNN (94.1 ± 22 vs 123.9 ± 35.2 ms), rMSSD (43.7 ± 20.1 vs 73.4 ± 14.5 ms) and HF (51.1 ± 48.8 vs 64.2 ± 28.6 ms2) were significantly higher after PTCA, whereas LF (142 ± 41.5 vs 157.2 ± 25.9 ms2) and the ratio of LF:HF (3.3 ± 1.9 vs 2.1 ± 1.2) were significantly decreased after PTCA. We observed a significant negative correlation after PTCA between QTcd and LF (r = −0.87, p = 0.01) and between QTcd and the ratio of LF:HF (r = −056, p < 0.05). Conclusion Among the patients with CAD undergoing PTCA, QTcd significantly decreased after PTCA, and negatively correlated with LF, the parameter reflecting the sympathetic system.
Two separate molecular systems, Dachsous/Fat and Starry night/Frizzled, act independently to confer planar cell polarity

Planar polarity is a fundamental property of epithelia in animals and plants. In Drosophila it depends on at least two sets of genes: one set, the Ds system, encodes the cadherins Dachsous (Ds) and Fat (Ft), as well as the Golgi protein Four-jointed. The other set, the Stan system, encodes Starry night (Stan or Flamingo) and Frizzled. The prevailing view is that the Ds system acts via the Stan system to orient cells. However, using the Drosophila abdomen, we find instead that the two systems operate independently: each confers and propagates polarity, and can do so in the absence of the other. We ask how the Ds system acts; we find that either Ds or Ft is required in cells that send information and we show that both Ds and Ft are required in the responding cells. We consider how polarity may be propagated by Ds-Ft heterodimers acting as bridges between cells.
Effect of dietary patterns on measures of lipid peroxidation: results from a randomized clinical trial.

BACKGROUND Free radical-mediated oxidative damage to lipids is thought to be an important process in the pathogenesis of atherosclerosis. Although previous studies have demonstrated a beneficial impact of antioxidant vitamin supplements on lipid peroxidation, the effect of dietary patterns on lipid peroxidation is unknown. METHODS AND RESULTS During the 3-week run-in period of a randomized trial, 123 healthy individuals were fed a control diet, low in fruits, vegetables, and dairy products, with 37% of calories from fat. Participants were then randomized to consume for 8 weeks: (1) the control diet, (2) a diet rich in fruits and vegetables but otherwise similar to the control diet, and (3) a combination diet rich in fruits, vegetables, and low-fat dairy products and reduced in fat. Serum oxygen radical-absorbing capacity, malondialdehyde (an in vitro measure of lipid peroxidation), and breath ethane (an in vivo measure of lipid peroxidation) were measured at the end of run-in and intervention periods. Between run-in and intervention, mean (95% CI) change in oxygen radical-absorbing capacity (U/mL) was -35 (-93, 13) in the control diet, 26 (-15, 67) in the fruits and vegetables diet (P=0.06 compared with control), and 19 (-22, 54) in the combination diet (P=0.10 compared with control). Median (interquartile range) change in ethane was 0.84 (0.10, 1.59) in the control diet, 0.02 (-0.61, 0.83) in the fruits and vegetables diet (P=0.04 compared with control), and -1.00 (-1.97, 0.25) in the combination diet (P=0.005 compared with control). Change in malondialdehyde did not differ between diets. CONCLUSIONS This study demonstrates that modification of diet can favorably affect serum antioxidant capacity and protect against lipid peroxidation.
Optimal transmission radii and packet size for Wireless Sensor Networks based on bi-level programming model

Transmission radii and packet size have great impacts on the efficiency of network-wide flooding, which is a crucial operation in the design of Wireless Sensor Networks (WSNs) and is frequently used in many applications and network protocols in WSNs. Inappropriate settings of these parameters may cause flooding operations consume excessive energy and network bandwidth and degrade the network performance. To achieve efficient flooding, in this paper, we present an bi-level programming model for WSNs, with the two objectives: First, establish how transmission radii affects the average network settling time, which is defined as the period from the time when the source broadcasts a packet to the time when all the network nodes have retransmitted the packet; Second, derive how the packet size affects energy use efficiency. Analytical and numerical results are given to verify the feasibility and effectiveness of our proposed model.
Control of Dorsal Raphe Serotonergic Neurons by the Medial Prefrontal Cortex: Involvement of Serotonin-1A, GABAA, and Glutamate Receptors

Anatomical evidence indicates that medial prefrontal cortex (mPFC) neurons project to the dorsal raphe nucleus (DR). In this study, we functionally characterized this descending pathway in rat brain. Projection neurons in the mPFC were identified by antidromic stimulation from the DR. Electrical stimulation of the mPFC mainly inhibited the activity of DR 5-HT neurons (55 of 66). Peristimulus time histograms showed a silence of 150 ± 9 msec poststimulus (latency, 36 ± 1 msec). The administration of WAY-100635 and picrotoxinin partly reversed this inhibition, indicating the involvement of 5-HT1A and GABAA receptors. In rats depleted of 5-HT with p-chlorophenylalanine, the electrical stimulation of mPFC mainly activated 5-HT neurons (31 of 40). The excitations (latency, 17 ± 1 msec) were antagonized by MK-801 and NBQX. Likewise, MK-801 prevented the rise in DR 5-HT release induced by electrical stimulation of mPFC. The application of 8-OH-DPAT in mPFC significantly inhibited the firing rate of DR 5-HT neurons and, in dual-probe microdialysis experiments, reduced the 5-HT output in mPFC and DR. Furthermore, the application of WAY-100635 in mPFC significantly antagonized the reduction of 5-HT release produced by systemic 8-OH-DPAT administration in both areas. These results indicate the existence of a complex regulation of DR 5-HT neurons by mPFC afferents. The stimulus-induced excitation of some 5-HT neurons by descending excitatory fibers releases 5-HT, which inhibits the same or other DR neurons by acting on 5-HT1A autoreceptors. Afferents from the mPFC also inhibit 5-HT neurons through the activation of GABAergic interneurons. Ascending serotonergic pathways may control the activity of this descending pathway by acting on postsynaptic 5-HT1A receptors.
On learning simple deterministic and probabilistic neural concepts

We investigate the learnability, under the uniform distribution, of deterministic and probabilistic neural concepts that can be represented as simple combinations of nonoverlapping perceptrons with binary weights. Two perceptrons are said to be nonoverlapping if they do not share any input variables. In the deterministic case, we investigate, within the distribution-specific PAC model, the learnability of perceptron decision lists and generalized perceptron decision lists. In the probabilistic case, we adopt the approach of learning with a model of probability introduced by Kearns and Schapire [10] and Yamanishi [14], and investigate a class of concepts we call probabilistic majorities of nonoverlapping perceptrons. We give polynomial time algorithms for learning these restricted classes of networks. The algorithms work by estimating various statistical quantities that yield enough information to infer, with high probability, the target concept.
La felicidad en estudiantes universitarios de ciencias económicas: algunos determinantes socioeconómicos en la ciudad de Cartagena de Indias

This paper aims to determine the demographic and sociodemographic factors that influence the happiness of undergraduate students considering that their conception of welfare differs to other groups of the population. This research contributes in the analysis of the dimensions that may influence the level of happiness, which correspond to previous research findings in the topic. An ordered Probit regression was estimated following the methodology of Lordemann, Jimenez, Mita, Lazaro, & Carvajal (2015). The results indicate that sex does not have influence in the level of happiness, that the youngest students are the most satisfied, as well those that have a partner or are currently married. At the same time, religion has positive effects on happiness. On the other hand, income was not significant as a determinant of happiness for undergraduate students.
Inter-class vs. mutual information as side-channel distinguishers

A novel “interclass information” side-channel distinguisher is compared to mutual information analysis. Interclass information possesses properties similar to mutual information but uses a different comparing strategy between the underlying conditional distributions. It is shown that interclass information can outperform mutual information in side-channel analysis, especially under low noise. The theoretical comparison is confirmed by simulations.
Confidence Judgment and Test Scores: Basis for Proposed Confidence Enhancement

ABSTRACT : One of the structured experiences of high school students is taking test. This experience is usually prepared as a regular academic activity in school. It aims to measure students’ achievement , which can be gleaned from their test score. How the students provide their impressions or predictive response before they see actual test material and after taking the test are implicit valuations. Thus, implicit valuations are the predictions that answer the question, “what will be their actual test score in mind? ” . The study investigates the confidence judgment and test scores of graduating high school students by determining their differences , which are the bases for developing a program to enhance student confidence in test-taking. Its participants consist of five hundred seventy five (575) graduating students from San Pablo City National High School in the P rovince of Laguna , Philippines . The researcher s used two instruments , which are the test prediction forms and teacher-made test. The findings showed that (1 ) there is a significant difference between the students’ pre-test prediction and post-test prediction ; (2 ) there is a significant difference between the students’ pre-test prediction and actual test score ; and (3 ) there is a significant difference between the students’ post-test prediction and actual test score. It is concluded that students’ are generally overconfident. Furthermore, it is recommended that there is a need to identify factors that affect students’ overconfidence. A module was proposed based on the findings of research. KEY WORDS : C onfidence J udgment ; T est S cores ; T est P rediction F orms ; T eacher- M ade T est ; C onfidence E nhancement . About the Authors: Tristan M. Eseo is a Special Education Teacher at the Paaralang Pag-ibig at Pag-asa at San Pablo City, Laguna, Philippines. Prof. Armina B. Mangaoil and Bettina M. Sedilla, Ph.D. are the Lecturers at the Faculty of Behavioral and Social Sciences PNU (Philippine Normal University), Taft Avenue, Manila 1000, Philippines. For academic interests, the authors can be contacted via their e-mails at: tmseo77@firstasia.edu. ph , mangaoil.ab@pnu.edu. ph , and bettinasedilla@yahoo.com How to cite this article? Eseo, Tristan M. , Armina B. Mangaoil & Bettina M. Sedilla. (2017). “Confidence Judgment and Test Scores: Basis for Proposed Confidence Enhancement” in EDUCARE: International Journal for Educational Studies , Vol.9(2), February, pp.121-128. Bandung, Indonesia: Minda Masagi Press owned by ASPENSI, ISSN 1979-7877. Chronicle of the article: Accepted (October 9, 2016); Revised (January 20, 2017); and Published (February 27, 2017).
INHIBITORY INTERACTION OF RECEPTOR UNITS IN THE EYE OF LIMULUS

The inhibition that is exerted mutually among the receptor units (ommatidia) in the lateral eye of Limulus has been analyzed by recording oscillographically the discharge of nerve impulses in single optic nerve fibers. The discharges from two ommatidia were recorded simultaneously by connecting the bundles containing their optic nerve fibers to separate amplifiers and recording systems. Ommatidia were chosen that were separated by no more than a few millimeters in the eye; they were illuminated independently by separate optical systems. The frequency of the maintained discharge of impulses from each of two ommatidia illuminated steadily is lower when both are illuminated together than when each is illuminated by itself. When only two ommatidia are illuminated, the magnitude of the inhibition of each one depends only on the degree of activity of the other; the activity of each, in turn, is the resultant of the excitation from its respective light stimulus and the inhibition exerted on it by the other. When additional receptors are illuminated in the vicinity of an interacting pair too far from one ommatidium to affect it directly, but near enough to the second to inhibit it, the frequency of discharge of the first increases as it is partially released from the inhibition exerted on it by the second (disinhibition). Disinhibition simulates facilitation; it is an example of indirect effects of interaction taking place over greater distances in the eye than are covered by direct inhibitory interconnections. When only two interacting ommatidia are illuminated, the inhibition exerted on each (decrease of its frequency of discharge) is a linear function of the degree of activity (frequency of discharge) of the other. Below a certain frequency (often different for different receptors) no inhibition is exerted by a receptor. Above this threshold, the rate of increase of inhibition of one receptor with increasing frequency of discharge of the other is constant, and may be at least as high as 0.2 impulse inhibited in one receptor per impulse discharged by the other. For a given pair of interacting receptors, the inhibitory coefficients are not always the same in the two directions of action. The responses to steady illumination of two receptor units that inhibit each other mutually are described quantitatively by two simultaneous linear equations that express concisely all the features discussed above. These equations may be extended and their number supplemented to describe the responses of more than two interacting elements.
Demand side management using direct load control for residential and industrial areas

Demand Side Management (DSM) can be a solution for providing the energy at peak times. In this paper an effective DSM is proposed that not only reduces the peak costs, but also is practicably possible in industrial and residential areas, which is performed by using Direct Load Control (DLC). According to use different strategies of DLC use, different results are found that can be either useful for consumers or utility. Produced structures by DLC are optimized by Integer Genetic Algorithm that is discussed in this paper. Simulation results for each DLC operation strategies are presented and an executive comparison for these strategies is done.
Speech dereverberation via maximum-kurtosis subband adaptive filtering

This paper presents an efficient algorithm for high-quality speech capture in applications such as hands-free teleconferencing or voice recording by personal computers. We process the microphone signals by a subband adaptive filtering structure using a modulated complex lapped transform (MCLT), in which the subband filters are adapted to maximize the kurtosis of the linear prediction (LP) residual of the reconstructed speech. In this way, we attain good solutions to the problem of blind speech dereverberation. Experimental results with actual data, as well as with artificially difficult reverberant situations, show very good performance, both in terms of a significant reduction of the perceived reverberation, as well as improvement in spectral fidelity.
Approximately Processing Multi-granularity Aggregate Queries over Data Streams

Aggregate monitoring over data streams is attracting more and more attention in research community due to its broad potential applications. Existing methods suffer two problems, 1) The aggregate functions which could be monitored are restricted to be first-order statistic or monotonic with respect to the window size. 2) Only a limited number of granularity and time scales could be monitored over a stream, thus some interesting patterns might be neglected, and users might be misled by the incomplete changing profile about current data streams. These two impede the development of online mining techniques over data streams, and some kind of breakthrough is urged. In this paper, we employed the powerful tool of fractal analysis to enable the monitoring of both monotonic and non-monotonic aggregates on time-changing data streams. The monotony property of aggregate monitoring is revealed and monotonic search space is built to decrease the time overhead for accessing the synopsis from O(m) to O(logm), where m is the number of windows to be monitored. With the help of a novel inverted histogram, the statistical summary is compressed to be fit in limited main memory, so that high aggregates on windows of any length can be detected accurately and efficiently on-line. Theoretical analysis show the space and time complexity bound of this method are relatively low, while experimental results prove the applicability and efficiency of the proposed algorithm in different application settings.
Locally definable fiber bundles

Let η = (E, p, Y, F, K) be a locally definable fiber bundle and f, h : X → Y two locally definable maps. If f and h are locally definably homotopic, then f ∗(η) and h∗(η) are locally definably fiber bundle isomorphic. 2000 Mathematics Subject Classification. 14P10, 14P20, 03C64.
Expression of Macrophage Inflammatory Protein ( MIP )-3 β / CCL 19 in pulmonary sarcoidosis

In this study, mRNA expression for novel T-lymphocyte chemoattractants, Leukotactin-1, Macrophage inflammatory protein (MIP)-3α and MIP-3β, was investigated in bronchoalveolar lavage fluid (BALF) cells from patients with sarcoidosis, a T-cell-mediated disease with typical CD4+ lymphocyte alveolitis. Of these three chemokines, only MIP-3β mRNA was upregulated in sarcoidosis and, therefore, protein levels of this chemokine, its pharmacological regulation and association with disease clinical course were explored. MIP-3β protein concentrations were elevated in BALF from sarcoid patients compared to control subjects (p=0.001), and in patients with CXR-Stage-II chemokine protein levels were increased compared to Stage-I (p=0.003). MIP-3β protein was associated predominantly with alveolar macrophages and correlated with BALF lymphocytes and T-cell subsets. mRNA expression for the MIP-3β receptor, CC chemokine receptor (CCR)7, was increased in sarcoidosis and correlated with MIP-3β protein levels. MIP-3β mRNA and protein expression in BALF cells was suppressed by Dexamethasone and Cyclosporine A in vitro. In conclusion, MIP-3β is implicated in T-lymphocyte recruitment in sarcoidosis, is associated with disease progression and downregulated by drugs used for sarcoidosis treatment. This novel chemokine, therefore, represents a candidate for studies of sarcoidosis pathobiological mechanisms. The number of words: 183