Miracle-dz/UniFAR-FTUs huggingface dataset:
Noise reduction combining microphones and piezoelectric devices

This paper describes noise reduction combining microphones and piezoelectric devices. The conventional microphone array has widely been utilized to realize a noise reduction and direction of arrival (DOA) estimation system. However, when the microphones are mounted to robot systems, the microphones are set extremely close to the robot. Then, the problem of internal noise from robots such as motors and gears arises. It is difficult to reduce the internal noise utilizing the conventional microphone array because the noise source is extremely close to the microphones. As the internal noise is not always stationary or sparse, we also can not employ useful blind source separation (BSS) approaches such as independent component analysis (ICA) and sparseness approach. The aim of our research is to reduce the internal noise by utilizing the piezoelectric devices attached on the internal noise source. In this paper, we formulate the problem combining microphones and the piezoelectric devices and describe the proposed algorithm for noise reduction. Experimental results show that our proposed method can reduce the internal noise.
Virtual Admittance Loop for Voltage Harmonic Compensation in Microgrids

The use of the virtual admittance concept for harmonic and/or unbalance compensation in microgrids when multiple inverters operate in parallel is proposed in this paper. The virtual impedance concept has been traditionally used for these purposes. However, one drawback of the virtual impedance is that it can only be applied to distributed generation (DG) units operating in voltage control mode (VSI-VCM), but is not applicable to DG units working in current control mode (e.g., current-regulated voltage-source inverters, VSI-CCM). Contrary to this, the proposed method can be used in any converter topology and control mode, including VSI-CCM and VSI-VCM.
A Semantically Enriched Competency Management System to Support the Analysis of a Web-based Research Network

While it is generally acknowledged that domain ontologies can significantly improve knowledge management systems (KMS) within organizations and among distributed web communities, we have little evidence of operational ontology-based KMS and their practical utility in real settings in the literature. We describe here the INTEROP KMap, a fully implemented, semantically indexed, competency management system, used to facilitate research collaboration and coordination of a Network of Excellence (NoE) on Enterprise Interoperability. Since the main highlighted advantages of ontologies are improved information access and interoperability, our aim in this paper is to give experimental support to these claims. We provide a summary description and usage data on the KMap, as well as experiments to quantify the added value of semantic search wrt traditional document ranking measures.
Thermal assisted finite element analysis of electrical machines

This paper deals with thermal analysis coupled with the finite element analysis of electric machines. The rated torque of an electrical machine is limited by the maximum temperature rise of the materials used, in particular the insulating and permanent magnet materials. In addition, the electrical machines performance is strongly affected by the operating temperature. This paper presents a general approach to simultaneous thermal and FE computation of electrical machines. The thermal analysis is based on the object oriented programming (OOP), so that it allows different types of electrical machines to be easily analyzed. The main key concepts and mechanisms of the OOP are briefly described, some examples will illustrate the theory.
Completion of Structured Low-Rank Matrices via Iteratively Reweighted Least Squares

We propose a new Iteratively Reweighted Least Squares (IRLS) algorithm for the problem of completing a low-rank matrix that is linearly structured, e.g., that possesses a Hankel, Toeplitz or block-Hankel/Toeplitz structures, which is of relevance for the harmonic retrieval or super-resolution problem. The algorithm optimizes a non-convex surrogate of the rank by minimizing well-chosen quadratic upper bounds of the smoothed surrogate.We establish a quadratic local convergence rate of the developed IRLS strategy if the linear structure is Hankel, with high probability if the provided entries of the matrix are sampled uniformly at random, and if the matrix to be completed fulfills a suitable coherence condition. Our strategy combines computational efficiency, as the dimensionality of its optimization variables scales sub-linearly in the matrix dimensions, with a favorable data efficiency, as it can be observed in experiments on hard completion tasks.In particular, our experiments show that the proposed algorithm exhibits an empirical recovery probability close to one from fewer samples than existing state-of-the-art approaches for the Hankel matrix completion task arising from the problem of spectral super-resolution of frequencies with small separation.
ABUNDANCE AND POPULATION STRUCTURE OF HUMPBACK WHALES IN THE NORTH PACIFIC BASIN

by John Calambokidis, Gretchen H. Steiger, Janice M. Straley, Terrance J. Quinn II, Louis M. Herman, Salvatore Cerchio, Dan R. Salden, Manami Yamaguchi, Fumihiko Sato, Jorge Urbán R. , Jeff Jacobsen, Olga von Ziegesar, Kenneth C. Balcomb, Christine M. Gabriele, Marilyn E. Dahlheim, Naoto Higashi, Senzo Uchida, John K.B. Ford, Yukifumi Miyamura, Paloma Ladrón de Guevara P., Sally A. Mizroch, Lisa Schlender, and Kristin Rasmussen. (see inside cover for individual affiliations).
The Influence of Chronic Ozone Exposure on Global Carbon and Water Cycles

AbstractOzone (O3) is a phytotoxic greenhouse gas that has increased more than threefold at Earth’s surface from preindustrial values. In addition to directly increasing radiative forcing as a greenhouse gas, O3 indirectly impacts climate through altering the plant processes of photosynthesis and transpiration. While global estimates of gross primary productivity (GPP) have incorporated the effects of O3, few studies have explicitly determined the independent effects of O3 on transpiration. In this study, the authors include effects of O3 on photosynthesis and stomatal conductance from a recent literature review to determine the impact on GPP and transpiration and highlight uncertainty in modeling plant responses to O3. Using the Community Land Model, the authors estimate that present-day O3 exposure reduces GPP and transpiration globally by 8%–12% and 2%–2.4%, respectively. The largest reductions were in midlatitudes, with GPP decreasing up to 20% in the eastern United States, Europe, and Southeast Asia .
Numerical experiments to determine MM5/WRF-CMAQ sensitivity to various PBL and land-surface schemes in north-eastern Spain: application to a case study in summer 2009

The Community Multiscale Air Quality (CMAQ) model was used along with the Weather Research and Forecasting (WRF) model to study air quality modelling sensitivity to various Planetary Boundary Layer (PBL) schemes and Land Surface Models (LSMs). The performance is assessed and quantified by comparing results with surface observations and the outputs provided by the fifth generation Mesoscale Model (MM5) when coupled to the CMAQ model. The evaluated meteorological variables include temperature, wind speed and direction and mixing ratio, while the CMAQ evaluation focuses on ozone concentrations. Differences were observed in circulatory patterns and meteorological variables, which influence spatial ozone distributions and concentrations.
Lightning transients on branched distribution lines considering frequency-dependent ground parameters

This paper investigates the influence of considering frequency-dependent ground parameters in the calculation of lightning transients on a two-phase distribution line including the presence of branches. The analysis is focused on propagation effects along the line. It is shown that the influence of frequency-dependent ground parameters is only remarkable if a poorly-conducting ground is considered. It is also shown that the presence of line branches is likely to reduce the relative importance of considering the frequency variation of the ground parameters in the calculation of lightning transients.
Absolute magnitude of the second-order middle to late, Miocene sea-level fall, Marion Plateau, northeast Australia

The Miocene carbonate platform of the Marion Plateau in northeast Australia preserves an excellent record of sea-level fluctuations. The warm-water platform consists of an early to middle Miocene second-order highstand complex, whereas the late Miocene platform is a second-order lowstand complex. Analysis of the sea-level fall that led to this relation shows that the amplitude of this event was at least 180 m. Furthermore, we suggest a methodology for determining the amplitude of sea-level fluctuations based on measurement of sea-level falls in structurally simple parts of passive margins or in distal parts of foreland basins.
A Delay-Dependent Exponential Stability Criterion for Delayed Neural Networks

This paper concerns with the delay-dependent exponential stability of delayed neural networks. By constructing a new Lyapunov functional and introducing the free weighting matrices, a new delay-dependent exponential stability criterion is derived in terms of linear matrix inequalities. A example is presented which show our result is less conservative than the existing stability criteria.
New constraints on the motion of the Fairweather fault, Alaska, from GPS observations

GPS velocities from sites near to the Fairweather fault in southern Alaska are combined with line length data from geodetic surveys by the U. S. Geological Survey (USGS) to estimate the slip rate and locking depth of the Fairweather fault using dislocation theory. We perform a weighted least‐squares inversion of the geodetic data and obtain a best‐fitting slip rate of 45.6 ± 2.0 mm/yr and locking depth of 9.0 ± 0.8 km. The slip rate we estimate is one of the highest observed across any strike slip fault. We also include the Dalton Creek segment of the Denali fault in our model and estimate a slip rate of 3.8 ± 1.4 mm/yr for this section of the fault. This is substantially lower than the rate observed for the Denali fault segment to the northwest, which ruptured in the November 3, 2002 MW 7.9 Denali fault earthquake.
Harnessing the potential of mobile personal data repositories

In this paper we argue in favor of remote data access based on the principle of abstract data types. This paradigm has inherent advantages over the traditional file-oriented approach, especially when used in a ubiquitous computing environment, where data producers and consumers can be distributed and emerge dynamically. The 'datlet', a mobile storage device that implements the proposed approach, is presented in detail. We also discuss how a datlet can be embedded in everyday objects to create hybrid information objects, leading to an intuitive information manipulation model.
Nitrogen and phosphorous limitations significantly reduce future allowable CO2 emissions

Allowable CO2 emissions are the emissions of CO2 allowed in order to follow a prescribed atmospheric CO2 concentration pathway. Allowable emissions depend on the uptake rates by the land and ocean and carbon‐climate interaction. Few Earth System Models used for estimating allowable emissions include nitrogen limitation on land, and none include phosphorus. We provide the first estimate of how nitrogen and phosphorus limitations alter the allowable emissions between 2006 and 2100 for two representative concentration pathways (RCPs). We show that nutrient limitations on land have little influence on ocean carbon uptake but reduce the land carbon uptake and allowable emissions by 69 Pg C (21%) for RCP2.6 and by 250 Pg C (13%) for RCP8.5 by 2100, as compared with the emissions estimated using integrated assessment models. We therefore demonstrate the importance of nutrient limitations in estimating future CO2 emissions to achieve the climate change limits implied by RCPs.
Melting process in the Hawaiian plume: An experimental study

In order to understand the melting processes in the Hawaiian plume, which may involve a mixture of peridotite and entrained former oceanic crust (eclogite), we carried out basalt/peridotite sandwich melting experiments with NMORB-like CRB72-31, Archaean Fe-rich basalt CLG46 and a fertile peridotite KLB-1. Melts similar to a relatively unfractionated Koolau tholeiite (SiO 2 =53, MgO=7 wt%) can be produced directly by partial melting of CLG46 at 2.5-3.0 GPa and 1350-1400°C. The conditions are slightly below the dry solidus of mantle peridotite. At or above the peridotite solidus, melts become saturated with olivine and are similar to picritic magma in Kilauea (SiO 2 =48, MgO=16). In the basalt/peridotite sandwich melting experiments, melt proportion within the basalt domain decreases as temperature increases near the peridotite solidus. Due to this effect, the degree of partial melting in the basalt layer is low at a temperature just above the peridotite solidus. Accordingly, the picritic melts produced at temperatures slightly above the peridotite solidus are more enriched in incompatible elements (K, Ti) than those produced at somewhat lower temperatures in the basalt layer. Two fundamental melting modes were found in the basalt/peridotite hybrid magma source: partial melting of eclogite domains, and reactive melting of both eclogite and peridotite domains. These results help to explain the origin of the two magma types in Hawaiian volcanoes (Koolau-type tholeiite and Kilauea-type picrite). Based on the melting experiments and the growth history of Koolau volcano, a model of melting process in the Hawaiian plume is proposed which advocates lower plume temperatures and larger block size of entrained eclogite than previous studies.
North Sea circulation: Atlantic inflow and its destination

[1] This study investigates the Atlantic inflow to the North Sea and its variability, pathways and destination. Results from a numerical model show that the variability of Atlantic inflow is dependent on the inflow location. The inflow between Orkneys and Shetland and in the Shetland shelf area show a strong connection to the strength in westerly winds in winter and spring on a weekly timescale, while the inflow in the Norwegian Trench has a longer response time to the large-scale wind pattern. About 50% of the Atlantic water that enters the North Sea is mixed with fresher water before it leaves the North Sea as the Norwegian Coastal Current. This illustrates the important role of estuarine processes within the North Sea and Skagerrak area, and their interaction with the Atlantic water.
Correlation of Albian European and Tethyan ammonite zonations and the boundaries of the Albian Stage and substages: some comments

Although the so-called ‘standard’ ammonite zonation of the Albian contains index species which occur in the Tethyan province, the scheme largely reflects the faunal succession in the European faunal province with its endemic sonneratiinid and hoplitinid faunal elements. Workers in the Tethyan province, stretching from South America in the west to Australia in the east, including southern Africa, Madagascar and India, face problems in the correlation of their successions with this so-called ‘standard’ scheme. There are other problems in that the succession of hoplitinid ammonites used in the biostratigraphy of European Albian sediments allows a far more detailed zonation to be made than in the case of some of the longer time-ranging Tethyan forms. This paper comments on proposals made recently for the delimiting of the base of the Albian Stage, and the Middle and Upper Substages, based on ammonite faunas. New information which affects the Albian ammonite zonation in the European faunal province and its correlation with the Tethyan province is discussed. The current hierarchical framework of zones and subzones used in the European faunal province may prove to be unsatisfactory in interprovincial correlation and particularly if the lower boundary of the Albian Stage was placed within the current Leymeriella tardefurcata ammonite Zone, instead of at its base.
Leakage Reduction in Water Distribution Systems: Optimal Valve Control

The reduction of leakage is an important objective of the United Kingdom water industry. The inclusion of pressure-dependent leakage terms in network analysis allows the application of formal optimization techniques to identify the most effective means of reducing water losses in distribution systems. The development of an optimization method to minimize leakage in water distribution systems through the most effective settings of flow reduction valves is described. The method shows a significant advantage compared with previously published techniques in terms of robustness and computational efficiency. A particular feature of the approach is the use of an objective function that allows minor violations in the targeted pressure requirements. This allows a much greater improvement in the exceedance of minor pressure requirements than would otherwise be achieved.
Designation of an on-line monitoring system of transmission line's galloping

Based on the analyses of the disadvantages and advantages of every on-line monitoring system of transmission line's galloping, an on-line monitoring system of power transmission line's galloping based on displacement sensors and acceleration sensors is developed in this paper, in which the wireless sensors network and the slave monitoring unit installed on towers are designed by wireless communication technique, by those monitoring units the galloping can be analyzed qualitatively and quantitatively. The operating principle, structure and function of the system are all analyzed at the same time. Moreover, the designation of the node of wireless sensors network based on ZigBee technique and the slave monitoring unit installed on towers are all shown in detailed in this paper. Based on the galloping mechanism as well as earlier data, the galloping is simulated in theory, and then some simulating results are shown in this paper at last.
Promoter–enhancer looping at the PPARγ2 locus during adipogenic differentiation requires the Prmt5 methyltransferase

Abstract PPARγ2 is a critical lineage-determining transcription factor that is essential for adipogenic differentiation. Here we report characterization of the three-dimensional structure of the PPARγ2 locus after the onset of adipogenic differentiation and the mechanisms by which it forms. We identified a differentiation-dependent loop between the PPARγ2 promoter and an enhancer sequence 10 kb upstream that forms at the onset of PPARγ2 expression. The arginine methyltransferase Prmt5 was required for loop formation, and overexpression of Prmt5 resulted in premature loop formation and earlier onset of PPARγ2 expression. Kinetic studies of regulatory factor interactions at the PPARγ2 promoter and enhancer revealed enhanced interaction of Prmt5 with the promoter that preceded stable association of Prmt5 with enhancer sequences. Prmt5 knockdown prevented binding of both MED1, a subunit of Mediator complex that facilitates enhancer–promoter interactions, and Brg1, the ATPase of the mammalian SWI/SNF chromatin remodeling enzyme required for PPARγ2 activation and adipogenic differentiation. The data indicate a dynamic association of Prmt5 with the regulatory sequences of the PPARγ2 gene that facilitates differentiation-dependent, three-dimensional organization of the locus. In addition, other differentiation-specific, long-range chromatin interactions showed Prmt5-dependence, indicating a more general role for Prmt5 in mediating higher-order chromatin connections in differentiating adipocytes.
αvβ8 integrin interacts with RhoGDI1 to regulate Rac1 and Cdc42 activation and drive glioblastoma cell invasion

Experiments with human cancer glioblastoma multiforme cell lines, primary patient samples, and preclinical mouse models are performed to show that αvβ8 integrin and RhoGDI1 are components of a signaling axis that drives brain tumor cell invasion via regulation of Rho GTPase activation.
F-actin asymmetry and the endoplasmic reticulum–associated TCC-1 protein contribute to stereotypic spindle movements in the Caenorhabditis elegans embryo

The position of the spindle apparatus determines the plane of cell cleavage and, therefore, the size and position of daughter cells, as well as the decision between symmetric and asymmetric cell division. We show that asymmetry in cortical actin and, remarkably, an endoplasmic reticulum–localized protein contribute to proper spindle positioning in the Caenorhabditis elegans embryo.
A New Binary Coding Particle Swarm Optimization for Feeder Reconfiguration

The objective of feeder reconfiguration on distribution system during normal operation is to find the best switch operation plan for reducing power losses and enhancing service reliability. By changing on/off status of sectionalizing-switches and tie-switches on a distribution system, feeder reconfiguration can be achieved. Also, the configured system must satisfy operation conditions as well as restrictions. Since the reconfiguration is done by changing the status of switches, it can be categorized as a discrete combinational optimization problem. Particle swarm optimization (PSO) is the one of the methods that can be used to solve optimal problems. Typical PSO is designed for continuous functions optimization, it is not designed for discrete functions optimization. Therefore, the operators of PSO algorithm must be reviewed and redefined to fit the application field of distribution feeder reconfiguration. This paper proposed a method which modifies the operators of PSO's formula based on the characters of both status of switches and shift operator to construct the binary coding particle swarm optimization for feeder reconfiguration. The test results show that the proposed method can apply to feeder reconfiguration effectively.
A non-iterative algorithm for determining all essential matrices corresponding to five point pairs

On presente dans cet article la facon de calculer toutes les matrices fondamentales correspondant a cinq couples de points apparies. On fournit des statistiques issues d'essais menes avec des donnees synthetiques ainsi qu'un exemple pour lequel il y a six solutions. On presente egalement une methode lineaire pour six couples de points ; la matrice fondamentale qui en resulte est determinee de facon unique par les six couples de points par suite de la linearite de la methode. L'auteur analyse enfin quelques resultats provenant d'autres chercheurs dans ce domaine, et qui ont des applications en photogrammetrie.
Automatic Metro Map Layout Using Multicriteria Optimization

This paper describes an automatic mechanism for drawing metro maps. We apply multicriteria optimization to find effective placement of stations with a good line layout and to label the map unambiguously. A number of metrics are defined, which are used in a weighted sum to find a fitness value for a layout of the map. A hill climbing optimizer is used to reduce the fitness value, and find improved map layouts. To avoid local minima, we apply clustering techniques to the map-the hill climber moves both stations and clusters when finding improved layouts. We show the method applied to a number of metro maps, and describe an empirical study that provides some quantitative evidence that automatically-drawn metro maps can help users to find routes more efficiently than either published maps or undistorted maps. Moreover, we have found that, in these cases, study subjects indicate a preference for automatically-drawn maps over the alternatives.