Miracle-dz/UniFAR-FTUs huggingface dataset:
A Fully Distributed Voltage Optimization Method for Distribution Networks Considering Integer Constraints of Step Voltage Regulators

With the increasing penetration of distributed photovoltaics (PVs), the operation and control of distribution networks (DNs), especially voltage control, have become more complicated. To deal with the voltage violation problem caused by large-scale PV access, this paper presents a fully distributed optimization method that combines the alternative direction multiplier method (ADMM) with the branch and bound method (BBM) for regional DNs. The total cost of active power losses and PV generation losses is minimized by making full use of the voltage regulation resources, e.g., reactive power compensators, step voltage regulators (SVR), and PV inverters, and the ADMM is employed to realize the intra-regional optimization and inter-regional coordination. To overcome the non-convex problem that is introduced by the SVR, the constraints of real-value tap positions are reformulated as linear inequality constraints of boundary voltages and added to the original problem, then the integer optimal solutions of SVR tap positions are obtained by BBM. The effectiveness of the proposed method is verified via numerical simulations on a practical 32-bus DN in China and a modified IEEE123-bus system.
Robust Fingerprint Matching

Pattern recognition aims to classify data (patterns) based on a priori knowledge or on s tatistical information extracted from the patterns. Under fingerprint recognition we have chosen the Fingerprint Matching as the research work. Most automatic systems for fingerprint comparison are based on minutiae matching. Minutiae are essentially terminations and bifurcations of the ridge lines that constitute a fingerprint pattern. A minutia extraction approach has been presented using the midpoint ridge contours [17 ]. The technique conferred in this paper is based on the extraction of minutiae from the thinned, binarized and segmented version of a fingerprint image. This paper describes fingerprint matching by using occurrences of minutiae points which enhances the performance of the matching algorithm. The quality of the proposed algorithm is that it can be associated with any algorithm as a part of pattern matching. Ovais Ismail Student MCA (III-Semester) Semester)Alliance Business Academy 19thcross 7thMain N.S. Palya Bangalore Bhawani Singh Shekhwat Student MCA (III-Semester) Semester)Alliance Business Academy 19thcross 7thMain N.S. Palya Bangalore The full text of the article is not available in the cache. Kindly refer the IJCA digital library at www.ijcaonline.org for the complete article. In case, you face problems while downloading the full-text, please send a mail to editor at editor@ijcaonline.org
Cosmological billiards and oxidation

We show how the properties of the cosmological billiards provide useful information (spacetime dimension and p‐form spectrum) on the oxidation endpoint of the oxidation sequence of gravitational theories. We compare this approach to the other available methods: GL(n,R) subgroups and the superalgebras of dualities.
Clustering by multivariate mutual information under Chow-Liu tree approximation

This paper considers two mutual-information based approaches for clustering random variables proposed in the literature: clustering by mutual information relevance networks (MIRNs) and clustering by multivariate mutual information (MMI). Despite being two seemingly very different approaches, the derived clustering solutions share very strong structural similarity. Motivated by this curious fact, in this paper we show that there is a precise connection between these two clustering solutions via the celebrated Chow-Liu tree algorithm in machine learning: Under a Chow-Liu tree approximation to the underlying joint distribution, the clustering solutions provided by MIRNs and by MMI are, in fact, identical. This solidifies the heuristic view of clustering by MMI as a natural generalization of clustering by MIRNs from dependency-tree distributions to general joint distributions.
41 2 v 2 2 4 A pr 2 00 7 Toward Eclipse Mapping of Hot Jupiters

Recent Spitzer infrared measurements of hot Jupiter eclipses suggest that eclipse mapping techniques could be used to spatially resolve the day-side photospheric emission of these planets using partial occultations. As a first step in this direction, we simulate ingress/egress lightcurves for three bright eclipsing hot Jupiters and evaluate the degree to which parameterized photospheric emission models can be distinguished from each other with repeated, noisy eclipse measurements. We find that the photometric accuracy of Spitzer is insufficient to use this tool effectively. On the other hand, the level of photospheric details that could be probed with a few JWST eclipse measurements could greatly inform hot Jupiter atmospheric modeling efforts. A JWST program focused on nonparametric eclipse map inversions for hot Jupiters should be actively considered.
Nonspeculative decimal signed digit adder

Decimal floating point (DFP) arithmetic has been paid more attention in recent years, since it is superior to the binary counterpart in the financial and commercial computing including currency conversion, billing system, banking and tex calculation. Many DFP arithmetic units, such as addition, multiplication, division and fused-multiply-add are not possible to achieve the high performance without a fast decimal fixed point adder. In this paper, the conventional four steps carry free signed digit addition algorithm is discussed. Furthermore, to improve the speed, we proposed a new method for the decimal SD addition and subtraction in digit set [−9; 9]. To evaluate the design, a VHDL model is provided and synthesized in STM 90 nm technology. The result shows that our design has a better performance on timing delay and area compared with previous designs in the same digit set.
Supplementary Figures and Legends

Supplementary Figure 1: Parameter dependencies; temporal accuracy. Case 1: white noise, flat but unknown baseline. Panel a expands all estimation errors for different conditions (columns: frame rate, noise level and spiking rate) and different MLspike parameter settings (rows: sigma, the expected RMS of noise in the data, and drift, the amount of allowed baseline drifts/fluctuations; parameter spikerate is fixed to 1sp/s). Optimal parameter settings are indicated with white stars and correspond to simulation results presented in Fig. 2b. Color codes for error rate (ER). Between 2 and 120 simulations were run for every data point, the exact number of repetitions being adjusted to the datapoint's relevance (e.g., only few repetitions were run for datapoints with very large ER). At lower noise levels, the performance of MLspike deteriorated only slowly when sigma moved away from its optimal value (note its range covering more than two orders of magnitude). At a given frame rate and noise level, " good parameter " ranges were similar up to spiking rates of 5sp/s, which means that estimation can be run without needing to know a priori the exact spiking rate; for 10sp/s and 20sp/s spiking rates however, the algorithm needed to be assigned to more consider signal variations as spikes rather than noise by setting smaller values for sigma. Somewhat surprisingly, in a few cases mostly limited to the highest spiking rates and sampling frequencies, estimation was slightly more accurate when the algorithm was allowed a small amount of baseline fluctuations, despite the actually flat baseline (bottom
Randomly switching max-plus linear systems and equivalent classes of discrete event systems

In switching max-plus-linear discrete event systems we can switch between different modes of operation. In each mode the discrete event system is described by a max-plus-linear state space model with different system matrices for each mode. In randomly switching max-plus-linear systems, the switching between the modes can be both deterministic and stochastic. The switching changes the structure of the system, which allows the system to break synchronization and to change the order of events. In this paper two equivalent descriptions for randomly switching max-plus-linear systems will be discussed. Furthermore, we will show that a randomly switching max-plus-linear system can be written as a piecewise affine system or a max-min-plus-scaling system. The last transformation can be established under (rather mild) additional assumptions on the boundedness of state and input.
User's Interest Detection through Eye Tracking for Related Documents Retrieval

In multiple studies, various implicit and explicit feedback types were used to quantify document quality and to identify user's interest in document content on both document and sub-document level. In this study we use eye movement data retrieved while reading a document to identify sections, user is most interested in. We describe multiple patterns in eye movement of users reading documents that can be used to identify important document fragments. The identified patterns are used to determine the user's interest in text fragments and to compare effectiveness of extracted document fragments and user created in-text highlights in the task of related document retrieval. Identified eye movement patterns allowed us to extract more important document sections compared to manual annotations with greater precision and consistency. Both types of compared interest indicators achieved similar performance in related document retrieval with the single most important difference: gaze based important section identification do not require active participation of the reader.
Study on Customer Loyalty Prediction Based on RF Algorithm

In the fierce electronic commerce competition, how to utilize the existing resources to improve customer loyalty has became an important factor for enterprises to guarantee their sustained growth. Through investigation into the customer statics, dynamic and enterprise service attributes, this paper, in order to guarantee higher customer loyalty of enterprises, has used random forest algorithm to improve the accuracy of the prediction to customer loyalty, and take the appropriate measures to avoid loss of customers.
Freestyle stroke parameters of national level swimmers with physical impairments. [Parámetros de nado en el estilo libre de nadadores de nivel nacional con discapacidad física].

espanolLos nadadores con discapacidad fisica durante la competicion de estilo libre se agrupan segun su clasificacion funcional en diez clases. La longitud, frecuencia e indice de brazada y la velocidad de nado se han estudiado previamente a nivel de elite, pero no a nivel nacional. Por lo tanto, el objetivo de este estudio fue evaluar las cuatro variables mencionadas y el tiempo de prueba con respecto a la clase funcional y el genero en una muestra de nadadores de nivel nacional con discapacidades fisicas en la prueba de 100 m estilo libre. Catorce mujeres (clases S4, S5, S7, S8, S9 y S10) y veintinueve hombres (clases S4, S5, S6, S7, S8 y S10) fueron grabados durante el Campeonato de Espana de Invierno de Natacion Adaptada. Posteriormente se utilizo el metodo clasico de distancias fijas clasicas para el analisis de la prueba. En base a en los resultados obtenidos, los valores de longitud e indice de brazada y de la velocidad de nado (y no de la frecuencia de brazada) aumentaron mientras que el tiempo de viraje disminuyo significativamente (p EnglishSwimmers with physical impairments during competition for freestyle swimming are grouped according to their functional classification in ten classes. Stroke length, stroke rate, stroke index and clean swimming speed have been studied previously at elite level, but not at national level. Therefore, the aim of this study was to assess the four mentioned variables and performance time regarding functional class and gender in a sample of national level swimmers with physical impairments at the 100 m freestyle. Fourteen female (classes S4, S5, S7; S8, S9 and S10) and twenty nine male (classes S4, S5, S6, S7 S8, and S10) swimmers were recorded during the Winter Spanish Championship for Adapted Swimming. Classical fixed distances method was used for race analysis. Based on the results, stroke length, stroke index, clean swimming speed (and not stroke rate) values increased and turn time decreased significantly (p The presented profiling allows to frame performance for long term development of swimmers with physical impairments and also coaches can use the results to determinate the best relationship between stroke rate and stroke length for their swimmers, advice development and talent identification.
Multiple Sequence Alignment Using Tabu Search

Tabu search is a meta-heuristic approach that is found to be useful in solving combinatorial optimization problems. We implement the adaptive memory features of tabu search to align multiple sequences. Adaptive memory helps the search process to avoid local optima and explores the solution space economically and effectively without getting trapped into cycles. The algorithm is further enhanced by introducing extended tabu search features such as intensification and diversification. It intensifies by bringing the search process to poorly aligned regions of an elite solution, and softly diversifies by moving from one poorly aligned region to another. The neighborhoods of a solution are generated stochastically and a consistency-based objective function is employed to measure its quality. The algorithm is tested with the datasets from BAliBASE benchmarking database. We have observed through experiments that for datasets comprising orphan sequences, divergent families and long internal insertions, tabu search generates better alignment as compared to other methods studied in this paper. The source code of our tabu search algorithm is available at http://www.bii. a-star.edu. sg/~tariq/tabu/ .
Intraoperative tissue oxygenation and postoperative outcomes after major non-cardiac surgery: an observational study.

BACKGROUND The relationship between tissue oxygen saturation (StO(2)) and serious postoperative complications remains unclear. We tested the hypothesis that perioperative in patients undergoing major non-cardiac surgery is inversely related to serious surgical outcomes. METHODS We enrolled 124 patients, ASA physical status ≤IV, having elective major non-cardiac surgeries with general anaesthesia. An InSpectra Model 650 StO(2) monitor (Hutchinson Technology, Hutchinson, MN, USA) was used to measure at the thenar eminence throughout surgery and for two postoperative hours. Our primary outcome was a composite of 30 day mortality and serious in-hospital complications. The secondary outcome was an a priori subset of the primary composite outcome representing infectious and wound-healing complications. Multivariable logistic regression was used to evaluate the associations between our primary and secondary outcomes and time-weighted average (TWA) and minimum . RESULTS Patients were 61 (12), mean (SD) yr old. The minimum was inversely associated with our primary composite outcome (P=0.02). The estimated odds ratio (97.5% CI) of having any major postoperative morbidity was 0.82 (0.67, 1.00) for a 5% increase in the minimum . In contrast, TWA was not significantly associated with major postoperative morbidity (P=0.35). Furthermore, neither TWA (P=0.65) nor minimum (P=0.70) was significantly associated with wound complications. CONCLUSIONS Minimum perioperative peripheral tissue oxygenation predicted a composite of major complications and mortality from major non-cardiac surgery. This is an observational association and whether clinical interventions to augment tissue oxygenation will improve outcomes remains to be determined.
Chrysso: an integrated power manager for constrained many-core processors

Modern microprocessors are increasingly power-constrained as a result of slowed supply voltage scaling (end of Dennard scaling) in conjunction with the transistor density scaling (Moore's Law). Existing many-core power management techniques such as chip-wide/per-core DVFS, and core and cache adaptation are quite effective in isolation at moderate to high power budgets. However, for future many-core chip, the existing techniques do not scale well to large core counts, small time slices and stringent power budgets. We need a new solution that combines different adaptation and reconfiguration techniques. In this paper, we present Chrysso, an integrated, scalable and low-overhead power management framework. Chrysso consists of a three-step process: leveraging simple analytical performance and power models, pruning the search space early using local Pareto front generation, followed by global utility-based power allocation. This ensures scalable and effective dynamic adaptation of many-core processors at short time scales along multiple axes, including core, cache and per-core DVFS adaptations. By integrating multiple power management techniques into a common methodology, Chrysso provides significant performance improvements over isolated mechanisms within a given power budget without power-gating cores. On a 64-core system, Chrysso improves system throughput by 1.6× and 1.9× over core-gating at stringent power envelops for multi-program (SPEC) and multi-threaded (PARSEC) workloads, respectively.
Asian American College Students, Perceived Burdensomeness, and Willingness to Seek Help

The present study examined the relationship between known risk factors for suicide and willingness to seek help among Asian American college students. The results revealed that Asian American students, relative to White American students, reported higher levels of two major contributors to suicidal risk: perceived burdensomeness on others and thwarted belongingness with others. Asian American students also reported less willingness to seek help from counselors and other mental health professionals than did White students. Furthermore, perceptions of burdensomeness (but not thwarted belongingness) mediated the link between students’ race (Asian vs. White) and their reluctance to seek help. These data suggest that for Asian Americans, perceptions of burdensomeness may increase desire for suicide while simultaneously decreasing willingness to seek help with one’s mental health issues. Additional results support the notion that Asian Americans perceive seeking mental health help as bringing yet further shame to one’s family. Perceived burdensomeness is not only a major contributor to suicidal risk but may also serve as a major obstacle on the road to recovery.
The voyage of the beagle in innovation systems land : explorations on sectors, innovation, heterogeneity and selection

The aim of the paper is to assess heterogeneity of the innovation process. Using exploratory factor analysis on micro data from the third Community Innovation Survey in 13 countries, we identify four factors that that can be interpreted as research, user, external and production ingredients of innovation. All too often it is assumed that the differences between the rates at which these factors are found in firms' innovation strategies can be accounted for by differences across sectors and/or countries. To put this proposition under scrutiny, we partition variability of the innovation process into components identified by the different levels. The analysis shows that sectors and countries matter to a certain extent, but far most of the variance is given by heterogeneity among firms within either sectors or countries. On the other hand, a grouping of firms produced by cluster analysis ac-counts for a much higher share of the variance, which implies that the most relevant contextual fac-tors cut across the established boundaries between sectors and countries. We discuss the implica-tions of these findings for the literature on national and sectoral systems of innovation, and for the way in which evolutionary economics has analyzed the role of selection.
Approximately Informed, Occasionally Monitorial? Reconsidering Normative Citizen Ideals

This article identifies gaps between normative ideals and realistic accounts of news use in democracy today. Starting from the widespread but unrealistic ideal of the informed citizen, and its more realistic development through notions of the monitorial citizen, we analyze comprehensive qualitative data on news users’ experiences. We describe these news users as approximately informed, occasionally monitorial. This description emphasizes the limited, shifting, and partial figurations of societal information that citizens are able to obtain through their use of journalistic and social media, and thereby challenges normative ideals. How do monitorial ideals function when the citizens are only occasionally on guard? By zooming in on three key gaps between even a less demanding ideal and actual practices in news use, we underline the need to further reconceptualize our expectations of citizens’ news use.
Direct Semiparametric Estimation of Single-Index Models with Discrete Covariates dpsfb950075.ps.tar = Enno MAMMEN J.S. MARRON: Mass Recentered Kernel Smoothers

Abstract Others have developed average derivative estimators of the parameter β in the model E(Y|X = x) = G(xβ), where G is an unknown function and X is a random vector. These estimators are noniterative and easy to compute but require that X be continuously distributed. This article develops a noniterative, easily computed estimator of β for models in which some components of X are discrete. The estimator is n ½ consistent and asymptotically normal. An application to data on product innovation by German manufacturers illustrates the estimator's usefulness.
Mg2+ ions: do they bind to nucleobase nitrogens?

Given the many roles proposed for Mg2+ in nucleic acids, it is essential to accurately determine their binding modes. Here, we surveyed the PDB to classify Mg2+ inner-sphere binding patterns to nucleobase imine N1/N3/N7 atoms. Among those, purine N7 atoms are considered to be the best nucleobase binding sites for divalent metals. Further, Mg2+ coordination to N7 has been implied in several ribozyme catalytic mechanisms. We report that Mg2+ assigned near imine nitrogens derive mostly from poor interpretations of electron density patterns and are most often misidentified Na+, K+, NH4+ ions, water molecules or spurious density peaks. Consequently, apart from few documented exceptions, Mg2+ ions do not bind to N7 atoms. Without much of a surprise, Mn2+, Zn2+ and Cd2+, which have a higher affinity for nitrogens, may contact N7 atoms when present in crystallization buffers. In this respect, we describe for the first time a potential Zn2+ ribosomal binding site involving two purine N7 atoms. Further, we provide a set of guidelines to help in the assignment of Mg2+ in crystallographic, cryo-EM, NMR and model building practices and discuss implications of our findings related to ion substitution experiments.
Implementation Experiences and Design Challenges for Resilient SDN Based Secure WAN Overlays

Mobile computing devices, industrial control systems, and service provider clouds often need to be connected to each other over wide area networks. However, reliability, quality of services and confidentiality are challenging in such setups. Moreover, isolated appliances and physical equipment face harsh environment conditions. In this paper we explore designing secure layer 2 overlay networks using Software Defined Networking (SDN), and challenges in implementing them with open source tools.