cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fault-tolerant quantum speedup from constant depth quantum circuits
Creators: name: Mezher, Rawad
name: Ghalbouni, Joe
name: Dgheim, Joseph
name: Markham, Damian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A defining feature in the field of quantum computing is the potential of a quantum device to outperform its classical counterpart for a specific computational task. By now, several proposals exist showing that certain sampling problems can be done efficiently quantumly, but are not possible efficiently classically, assuming strongly held conjectures in complexity theory. A feature dubbed quantum speedup. However, the effect of noise on these proposals is not well understood in general, and in certain cases it is known that simple noise can destroy the quantum speedup. Here we develop a fault-tolerant version of one family of these sampling problems, which we show can be implemented using quantum circuits of constant depth. We present two constructions, each taking $poly(n)$ physical qubits, some of which are prepared in noisy magic states. The first of our constructions is a constant depth quantum circuit composed of single and two-qubit nearest neighbour Clifford gates in four dimensions. This circuit has one layer of interaction with a classical computer before final measurements. Our second construction is a constant depth quantum circuit with single and two-qubit nearest neighbour Clifford gates in three dimensions, but with two layers of interaction with a classical computer before the final measurements. For each of these constructions, we show that there is no classical algorithm which can sample according to its output distribution in $poly(n)$ time, assuming two standard complexity theoretic conjectures hold. The noise model we assume is the so-called local stochastic quantum noise. Along the way, we introduce various new concepts such as constant depth magic state distillation (MSD), and constant depth output routing, which arise naturally in measurement based quantum computation (MBQC), but have no constant-depth analogue in the circuit model.
description: 26 pages, 6 figures, comments are welcome, new references added
title: Energy harvesting wireless sensor nodes in an AAL environment
Creators: name: Novotny, Thomas
Publisher: name: TU Wien
Year: 2017
Subjects: subject: wireless
subject: sensor
subject: AAL
subject: energy

description: As society ages, having the option for persons to stay in their own home as long as possible becomes more important. This can be made possible through a variety of Active and Assisted Living (AAL) technologies that can assist with living a more independent life and ensure the safety of the person using it. Using cable-bound systems for this is neither practical nor economical as it requires making permanent changes to a home during installation. Wireless systems provide more flexibility, but still typically rely either on an external power supply or on batteries which have to be changed frequently. The company EnOcean provides a wireless standard and hardware for creating energy harvesting wireless sensor networks that rely on ambient light and other sources of energy that can be harvested from the environment, making it possible to create wireless nodes that are easy to install in a wide variety of locations without the need for additional wiring and maintenance. In this paper, the aim is to develop modules that provide an array of sensing options such as water flow detection, presence detection and non-invasive current detection while trying to keep the power consumption as low as possible, laying the groundwork for further projects that are based on wireless energy harvesting sensor nodes.
Semiclassical limit of the entanglement in closed pure systems
Creators: name: Angelo, Renato M.
name: Furuya, Kyoko
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the semiclassical limit of the entanglement for the class of closed pure systems. By means of analytical and numerical calculations we obtain two main results: (i) the short-time entanglement does not depend on Planck's constant and (ii) the long-time entanglement increases as more semiclassical regimes are attained. On one hand, this result is in contrast with the idea that the entanglement should be destroyed when the macroscopic limit is reached. On the other hand, it emphasizes the role played by decoherence in the process of emergence of the classical world. We also found that, for Gaussian initial states, the entanglement dynamics may be described by an entirely classical entropy in the semiclassical limit.
description: 8 pages, 2 figures (accepted for publication in Phys. Rev. A)
Evaluation of radiative depolarization in the future Circular Electron-Positron Collider
Creators: name: Xia, Wenhao
name: Duan, Zhe
name: Barber, Desmond P.
name: Wang, Yiwei
name: Wang, Bin
name: Gao, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Polarized lepton beams are an important aspect in the design of the future 100 km-scale Circular Electron-Positron Collider (CEPC). Precision beam energy calibration using resonant depolarization, as well as longitudinally polarized colliding beams are being actively investigated. The achievable beam polarization level for various beam energies and application scenarios depends on the radiative depolarization in the collider rings. In this paper the radiative depolarization effects are evaluated for a CEPC collider ring lattice with detailed machine imperfections and corrections. Simulations with the SLIM and Monte-Carlo approaches using the Bmad/PTC codes are compared with the theory of the effects of spin diffusion for ultra-high beam energies and the validity of the theories is thereby addressed. The paper concludes with a summary and suggestions for further investigations.
title: Automated classification of road -surface types based on crowd-sourced data
Creators: name: Podaras, Silvana
Publisher: name: TU Wien
Year: 2017
Subjects: subject: crowd sourcing
subject: road classification
subject: image analysis

description: In dieser Diplomarbeit wird eine Methode zur automatisierten Klassifizierung von Straßen- und Wegoberflächen präsentiert. Die automatische Klassifizierung von Landflächen ist ein aktives Forschungsfeld und befasst sich vor allem mit der Klassifizierung auf Basis von digitalen Luft- und Satellitenbildern. Die Klassifizierung von Straßenoberflächen anhand solcher Fotos birgt spezielle Herausforderungen, denn Straßen sind auf diesen Fotos nur wenige Pixel breit, wodurch die Anwendung gängiger Bildanalysemethoden nur beschränkt möglich ist. Die hier präsentierte Methode verfolgt einen alternativen Weg basierend auf open-source Daten, wobei das Hauptaugenmerk auf Daten von OpenStreetMap (OSM) liegt. Das System ist so gestaltet, das zusätzliche Daten (wie zum Beispiel Höheninformationen) in die Klassifizierung mit eingebunden werden können. Weiters findet die Klassifizierung in zwei verschiedenen Feinheitsstufen statt, für die eine entsprechende Taxonomie ausgearbeitet wurde. Zur Evaluierung wurden Testgebiete in Österrich und Liechtenstein herangezogen. Auf dem groben Level wurden rund 90% der Straßen korrekt klassifiziert, auf dem feinstufigen Level rund 60%. Der Vorteil der hier präsentierten Methode ist, dass sie schnell und für Gebiete weltweit einsetzbar ist, vorausgesetzt, dass ausreichend OSM Daten für die jeweilige Region verfügbar sind.
description: This thesis presents a method to automatically estimate road-surface types based on crowd-sourced and open source data to give cyclists an overview of the road conditions along a cycle route. Automatic classification of land-cover has been an active research field in recent years and mainly focuses on the classification of areas based on digital satellite and aerial imagery. Performing classification of road-surfaces based on such images bears some special challenges because roads have a width of only a few pixels on these photos, which makes it difficult to successfully apply classical image-analysis methods. This thesis proposes an alternative approach for road-surface classification by utilizing open source data with a focus on data from the project OpenStreetMap (OSM). The system is designed so it can be extended with additional data from other sources to improve classification results. Classification takes place at two levels, based on a coarse-to-fine-grained surface taxonomy. The method was evaluated on different testing areas in Austria and Liechtenstein. At the coarse-grained level, up to 90% of streets were correctly classified. At the fine-grained level, up to 60% of streets were correctly classified. The advantage of the proposed method is that it is fast and applicable to regions worldwide at low cost, as long as sufficient OSM data for a certain region is available.
El Instituto Agricola Catalan de San Isidro y la organizacion de los intereses agrarios (1880-1936)
Creators: name: Planas, Jordi
name: Planas, Jordi
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Labor and Human Capital
subject: historia agraria
subject: asociacionismo agrario
subject: grupos de presion
subject: intereses agrarios
subject: Cataluna
subject: Espana
subject: agrarian history
subject: agricultural associations
subject: pressure groups
subject: agricultural interests
subject: Catalonia
subject: Spain

description: El Instituto Agricola Catalan de San isidro (IACSI) es la asociacion agraria mas antigua de las existentes hoy en Espana y, desde su fundacion (1851), ha sido la principal institucion representativa de los interese de la propiedad agraria en Cataluna. Este articulo analiza el papel desempenado por esta institution en la organizacion de los intereses agrarios entre 1880 y 1936. Se argumenta que logro una preeminencia en la movilizacion agrarista de los ultimos anos del siglo XIX y una capacidad de influencia considerable en el movimiento asociativo agrario en Catalina durante las primeras decades del siglo XX. Ante las dificultades para ampliar su base social, el IACSI oriento sus esfuerzos a lograr un control indirecto del campesinado a traves de asociacoines de caracter interclasista. Esta estrategia empezo a gestarse a finales del siglo XIX, en el contexto de la crisis agraria finisecular, y continuo con mas o menos vicisitudes hasta los anos treinta, cuando el cambio de coyuntura politica, la progresiva organizacion del singicalismo campesino de clase y el aumento de la conflictividad social en el mundo rural provocaron un cambio de orientacion y se impuso definitivamente la estricta defensa de la propiedad...The Instituto Agricola Catalan de San Isidro (IACSI) is the oldest agrarian association in Spain and, since its foundation (1851), it has been the most important institution representing Catalan landowners' interests. The aim of this article is to analyze the roll of this institution from 1880 to 1936, when the Spanish Civil War started. It points out the importance of this institution in the agrarian social movement at the end of the nineteenth century and its influence on agrarian associations in the early twentieth century in Catalonia. As it was difficult to increase its members and become more powerful, it tried to obtain control of peasantry through other associations. This strategy started at the end of the nineteenth century, during the agrarian crisis, and lasted until the 1930s, when the new political context in Spain, the stronger agrarian unionism and the hard struggle between landowners and peasantry put to an end, and all the efforts of the institution concentrated in the defense of property.
GRB Spectrum from Gradual Dissipation in a Magnetized Outflow
Creators: name: Gill, Ramandeep
name: Granot, Jonathan
name: Beniamini, Paz
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Modeling of gamma-ray burst (GRB) prompt emission spectra sometimes requires a (quasi-) thermal spectral component in addition to the Band function. In photospheric emission models, a prominent thermal component broadened by sub-photospheric dissipation is expected to be released at the photospheric radius, $r_{\rm ph}\sim10^{12}\,$cm. We consider an ultra-relativistic strongly magnetized outflow with a striped-wind magnetic-field structure undergoing gradual and continuous magnetic energy dissipation at $r
description: 18 pages, 8 figures, Accepted for publication in MNRAS
Un modo de vida basado en el aprovechamiento maderero en la Castilla del antiguo regimen: comercio de madera y carreteria en los pinares de Soria-Burgos (siglos XIXX-XVIII)
Creators: name: Hernando, Maximo
name: Hernando, Maximo
Publisher: name: Unknown
Year: 2008
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Economias preindustriales
subject: comercio de madera
subject: transporte
subject: castilla
subject: soria
subject: burgos
subject: pre-industrial economies
subject: wood trade
subject: transport
subject: castile

description: El autor realiza una contribucion al estudio de las estructuras socieconomicas de las regiones de montana en la Europa preindustrial, prestando atencion a un modelo de especializacion economica basado en el aprovechamiento maderero de los montes de propiedad publica. Elige para ello la comarca de Pinares, en las actuales provincias de Soria y Burgos, donde sus vecinos, aprovechando los abundantes recursos forestales existentes, y forzados por la ineptitud de los terrenos para el cultivo del cereal o la vid, buscaron su sustento en actividades economicas basadas en el aprovechamiento de la madera, durante un largo periodo que abarca desde el siglo XIII y ahsta el siglo XIX. En una primera fase su principal actividad consistio en llevar a vender madera o otros territorios de la Corona de Castilla y de fuera de ella. pero despues muchos de ellos se especializaron en la prestacion de servicios de transporte a larga distancia de mercancias como lana, hierro, sal, cereal o carbon. Por fin, otros vecinos se especializaron en el trabajo de la madera para su posterior venta en forma semielaborada a carpinteros asentados en nucleos urbanos proximos...The author makes a contribution to the study of the social and economic structures of the mountain regions of preindustrial Europe, paying attention to a model of regional economic specialization based on the exploitation of public forests for extraction of wood. He chooses the case of the region of "Pinares", in the provinces of Soria and Burgos, where its inhabitants, taking profit of the abundant forest resources of the region, and forced by the ineptitude of the land for the cultivation of corn and vineyard, based their domestic economies on the exploitation of wood, during a long period of time, from the thirteenth to the nineteenth century. In a first phase their main activity consisted in transporting and selling wood in other territories of the Crown of Castile. But later many of them specialized in the transport of other products like wool, iron, salt, corn or coal. And finally, others specialized in the work of wood for its commercialization as a semielaborate product among carpenters who lived in nearby towns.
A Survey on Big Data for Network Traffic Monitoring and Analysis
Creators: name: D'Alconzo, Alessandro
name: Drago, Idilio
name: Morichetta, Andrea
name: Mellia, Marco
name: Casas, Pedro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Network Traffic Monitoring and Analysis (NTMA) represents a key component for network management, especially to guarantee the correct operation of large-scale networks such as the Internet. As the complexity of Internet services and the volume of traffic continue to increase, it becomes difficult to design scalable NTMA applications. Applications such as traffic classification and policing require real-time and scalable approaches. Anomaly detection and security mechanisms require to quickly identify and react to unpredictable events while processing millions of heterogeneous events. At last, the system has to collect, store, and process massive sets of historical data for post-mortem analysis. Those are precisely the challenges faced by general big data approaches: Volume, Velocity, Variety, and Veracity. This survey brings together NTMA and big data. We catalog previous work on NTMA that adopt big data approaches to understand to what extent the potential of big data is being explored in NTMA. This survey mainly focuses on approaches and technologies to manage the big NTMA data, additionally briefly discussing big data analytics (e.g., machine learning) for the sake of NTMA. Finally, we provide guidelines for future work, discussing lessons learned, and research directions.
Propuesta de ordenacion comercial de los aprovechamientos micologicos a traves de lonjas agrarias: analisis economico y financiero para la provincia de Soria
Creators: name: Madrazo, Pable
name: Pena, Fernando
name: Laleona, Sonia
name: Madrazo, Pable
name: Pena, Fernando
name: Laleona, Sonia
Publisher: name: Unknown
Year: 2008
Subjects: subject: Crop Production/Industries
subject: Financial Economics
subject: comercializacion de productos micologicos
subject: lonjas agrarias
subject: Soria
subject: analisis economico y financiero
subject: evaluacion dinamica de inversiones
subject: wild edible mushrooms commercialization
subject: produce markets
subject: economic and financial analysis
subject: dynamic evaluation of investments

description: El presente articulo analiza la forma en la que las autoridades regionales con competencias en las materia podrian poner en marcha la ordenacion de la comercializacion de un recurso forestal, los hongos silvestres comestibles, a traves de un modelo que ya funciona para otros productors agrarios y pesqueros como es el de las lonjas subastadoras. Para ello se estrudia la viabilidad tecnica y economico-financiera de esa propuesta en la provincia de Soria, uan de las principales productoras espanolas. Se demuestra que existen opciones tecnicas para subastar esta producciones, que se podrian aplicar en cualquier zona con recurso, cuya rentabilidad seria paracida a la de otros productos primarios que se comercializan por canales similares... The aim of this article is to study how the regional government could arrange the market of wild edible mushrooms in the same way as other foodstuff. We propose wild edible mushroom markets like it is done in fish or agricultural produce markets. With this purpose, first we study the technical viability of this project and then its economic and financial feasibility in the particular case of the province of Soria (Spain), one of the most producers of this forest resource. Finally, we show the cost-effectiveness and the high return of this investment and so the technical advisability and feasibility of the proposal.
Multi-scale membrane process optimization with high-fidelity ion transport models through machine learning
Creators: name: Rall, Deniz
name: Schweidtmann, Artur M.
name: Krusea, Maximilian
name: Evdochenko, Elizaveta
name: Mitsos, Alexander
name: Wessling, Matthias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Innovative membrane technologies optimally integrated into large separation process plants are essential for economical water treatment and disposal. However, the mass transport through membranes is commonly described by nonlinear differential-algebraic mechanistic models at the nano-scale, while the process and its economics range up to large-scale. Thus, the optimal design of membranes in process plants requires decision making across multiple scales, which is not tractable using standard tools. In this work, we embed artificial neural networks~(ANNs) as surrogate models in the deterministic global optimization to bridge the gap of scales. This methodology allows for deterministic global optimization of membrane processes with accurate transport models -- avoiding the utilization of inaccurate approximations through heuristics or short-cut models. The ANNs are trained based on data generated by a one-dimensional extended Nernst-Planck ion transport model and extended to a more accurate two-dimensional distribution of the membrane module, that captures the filtration-related decreasing retention of salt. We simultaneously design the membrane and plant layout yielding optimal membrane module synthesis properties along with the optimal plant design for multiple objectives, feed concentrations, filtration stages, and salt mixtures. The developed process models and the optimization solver are available open-source, enabling computational resource-efficient multi-scale optimization in membrane science.
Skeletal muscle dysfunction in people with COPD and recipients of lung transplants
Creators: name: Mathur, Sunita
Publisher: name: University of British Columbia
Year: 2010

description: Chronic obstructive pulmonary disease (COPD) is a respiratory condition with multisystemic effects resulting in skeletal muscle dysfunction. Lung transplantation is a treatment option for people with COPD resulting in improved lung function, however, skeletal muscle dysfunction persists and may be worsened following transplantation due to a period of bedrest and the myopathic effects of immunosuppressant medications. We hypothesized that impairments in skeletal muscle function of the quadriceps and hamstrings in people with COPD would be related to changes in skeletal muscle structure and these impairments would be accentuated in lung transplant recipients. Two pilot studies (Studies 1 and 2) were performed to establish methodology. In Study 3, magnetic resonance imaging showed uniform atrophy of the thigh muscles and intramuscular fat infiltration in the quadriceps and hamstrings of people with COPD compared to age-, sex-, and body mass index (BMI)-matched controls. Notably, eccentric torque normalized to muscle volume was greater in people with COPD compared to controls. Study 4 showed that despite shorter times to task failure for sustained isometric quadriceps contractions, people with COPD showed similar changes in EMG median frequency and amplitude compared to controls. Quantification of cellular features of the vastus lateralis (VL) in Study 5 showed a greater proportion of abnormal muscle and small, angular fibers [i.e. angular fibres] in people with COPD compared to controls. A larger proportion of people with COPD showed increased connective tissue in the VL compared to controls. Comparison of people with COPD to lung transplant recipients in Study 6 showed a similar amount of muscle atrophy, a wide variation in intramuscular fat infiltration, shorter times to task failure for the quadriceps and small, abnormal histological features of the VL. In summary, these findings suggest that although people with COPD demonstrate impairments in skeletal muscle structure and function (e.g. atrophy, fat infiltration, reduced endurance), they have a preservation of eccentric torque and motor unit firing properties. The variation of findings in transplant recipients, partly attributable to a small and diverse sample, limited our ability to test our hypothesis of whether changes in skeletal muscle structure and function would be accentuated in this group of individuals.
Additional file 2 of Oxidation during magma mixing recorded by symplectites at Kusatsu–Shirane Volcano, Central Japan
Creators: name: Ueki, Kenta
name: Inui, Mutsuko
name: Matsunaga, Kenta
name: Okamoto, Naoya
name: Oshio, Kazuki
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Cancer

description: Additional file 2. BSE images of symplectites. Sample locations are given in Fig. 1.
title: Motion planning for a six-legged robot
Creators: name: Wimmer, Bernhard
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Cyber-Physical System
subject: Hybrid System
subject: Motion Planning
subject: Robotics
subject: Simulation
subject: Kinematics
subject: Dynamics

description: Motion planning refers to the process of translating high-level specifications of tasks into low-level sequences of control inputs for a robot's actuators. Legged robots, although more flexible with respect to wheeled robots in uneven and cluttered environments, are a very challenging application domain for motion planning. Such systems may benefit from the use of a multi-modal planner that is able to switch between discrete modes corresponding to the set of contact points of the robot with the ground. Widely available single-mode planners can then used to find a continuous trajectory through a given mode. Kinematic constraints usually require such paths to be constrained to a submanifold of the configuration space, which limits the efficacy of common single-mode planners and requires them to be adapted for this environment.
The Simple Spectrum of $c\bar c c\bar c$ States in the Dynamical Diquark Model
Creators: name: Giron, Jesse F.
name: Lebed, Richard F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We develop the spectroscopy of $c\bar c c\bar c$ and other all-heavy tetraquark states in the dynamical diquark model. In the most minimal form of the model (e.g., each diquark appears only in the color-triplet combination; the non-orbital spin couplings connect only quarks within each diquark), the spectroscopy is extremely simple. Namely, the $S$-wave multiplets contain precisely 3 degenerate states ($0^{++}$, $1^{+-}$, $2^{++}$) and the 7 $P$-wave states satisfy an equal-spacing rule when the tensor coupling is negligible. When comparing numerically to the recent LHCb results, we find the best interpretation is assigning $X(6900)$ to the $2S$ multiplet, while a lower state suggested at about $6740$ MeV fits well with the members of the $1P$ multiplet. We also predict the location of other multiplets ($1S$, $1D$, etc.) and discuss the significance of the $cc$ open-flavor threshold.
description: 9 pages, no figures. Minor revisions. Version accepted to appear in Physical Review D
title: Impedance spectroscopy as a non-destructive in-process control approach for neurochip fabrication
Creators: name: Schmied, Isabella
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Impedanz Analyse
subject: impedance-analyis
subject: neurochip fabrication

description: Microelectrode arrays (MEAs) have a wide field of application in chemical, biological and pharmaceutical research. Starting from in-vitro tests of cell cultures for preclinical testing, like cell-drug interactions, to in-vivo response tests. For biological in-vitro electrophoresis, MEAs are especially popular due to their large number of measuring electrodes and the low amount of required measurement media. Typically, the flow of liquid media is controlled by channel structures. Those are embedded in an attachment block, which is mounted on top of the MEA. This work focus on a transepithelial measurement setup for detecting impedance differences. By using electrical impedance spectroscopy (EIS), different variations can be detected. For basic evaluations, the measurement and comparison of each microelectrode on a MEA is used to dedicate defects and inaccuracies originated from the fabrication process. Through comparison of different measurements, the electrical properties of the different media depending on the frequency can be detected. Thereby, the physiological change yields to changes in the measured impedance. Another approach is the detection of a biological layer on the electrodes, like an overall protein layer or an isolated attachment of cells. First, the performance of the whole setup was tested. Therefore, the sensitivity and frequency dependency of the microelectrodes were measured on a wide frequency range. To evaluate the dataset statistically and detect possible outliers, the distribution was analyzed in detail. Another part was the detection of repeatability of the measurement data. To improve the performance of the setup, different properties were analyzed. First, a new transepithelial setup was fabricated and evaluated by comparison with the former setup. Another approach was the evaluation of the influence of different deposition methods of electrode material on the morphology of the layers and the measured impedance values. In the next step, properties concerning the microelectrodes were varied and the resulting measurement values were discussed in detail. Starting from the choice of biomaterial, the variation of electrode thickness to the variation of microelectrode size. Another evaluation discussed the structure of the MEA, concerning different lengths of connecting leads between microelectrodes and outer contact electrodes. Finally, the suitability of the measurement setup for detection of different biological media was tested. The analysis started at different cell media with and without serum and compared the results with former measured Ringer¿s solution. In the next part, the influence of a protein coating layer on the measurement results was shown. The last part concerns the suitability of measuring cell attachment of PC-12 cells.
Sensitivity minimization by stable controllers for a class of unstable time-delay systems
Creators: name: Gumussoy, Suat
name: Ozbay, Hitay
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper sensitivity minimization problem is considered for a class of unstable time delay systems. Our goal is to find a stable controller stabilizing the feedback system and giving rise to smallest H-infinity norm for the sensitivity function. This problem has been solved by Ganesh and Pearson (1986) for finite dimensional plants using Nevanlinna-Pick interpolation. We extend their technique to include possibly unstable time delay systems. Moreover, we illustrate suboptimal solutions, and their robust implementation.
El derecho de separacion del socio cooperativista en la fusion de cooperativas. Efectos de la reforma de la norma contable en estos procesos
Creators: name: Marti, Elena Melia
name: Marti, Elena Melia
Publisher: name: Unknown
Year: 2008
Subjects: subject: Farm Management
subject: Financial Economics
subject: Political Economy
subject: fusion cooperativa
subject: derecho de separacion
subject: NIIF No 3. metodo de compra
subject: metodo de union de intereses
subject: co-operative Merger
subject: resignation right
subject: IFRS 3
subject: purchase method
subject: pooling of interest method

description: En este trabajo se abordan las principales particularidades asociadas al regimen del derecho de separacion de los socios disconformes en un proceso de fusion cooperativa. Al mismo tiempo, ante la reciente aprobacion del nuevo Plan General Contable, aprobado por Real Decreto 1514/2007, de 16 de noviembre de 2007, se analizan las repercusiones que en los distintos ambitos (economico-financiero y social) tendra la aplicacion obligatoria del metodo de adquisicion en la contabilidad de las fusiones de cooperativas...In this piece of work they are analyzed the principal particularities associated with the resignation right regime of the dissatisfied members in a merger process between cooperatives. At the same time, in view of the Recent adoption of the new Accountant General Plan, approved by Royal Decree 1514/2007 of 16 November 2007, we analyze the impact of obligatory application of the acquisition method on accounting mergers of cooperatives,
Quantum-Dot Parity Effects in Trivial and Topological Josephson Junctions
Creators: name: Razmadze, D.
name: O'Farrell, E. C. T.
name: Krogstrup, P.
name: Marcus, C. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: An odd-occupied quantum dot in a Josephson junction can flip transmission phase, creating a π-junction. When the junction couples topological superconductors, no phase flip is expected. We investigate this and related effects in a full-shell hybrid interferometer, using gate voltage to control dot-junction parity and axial magnetic flux to control the transition from trivial to topological superconductivity. Enhanced zero-bias conductance and critical current for odd parity in the topological phase reflects hybridization of the confined spin with zero-energy modes in the leads.
Gravity and the Quantum
Creators: name: Ashtekar, Abhay
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The goal of this article is to present a broad perspective on quantum gravity for \emph{non-experts}. After a historical introduction, key physical problems of quantum gravity are illustrated. While there are a number of interesting and insightful approaches to address these issues, over the past two decades sustained progress has primarily occurred in two programs: string theory and loop quantum gravity. The first program is described in Horowitz's contribution while my article will focus on the second. The emphasis is on underlying ideas, conceptual issues and overall status of the program rather than mathematical details and associated technical subtleties.
description: A general review of quantum gravity addresed non-experts. To appear in the special issue `Space-time Hundred Years Later' of NJP; J.Pullin and R. Price (editors). Typos and an attribution corrected; a clarification added in section 2.C
Increasing cannabis use and importance as an environmental contaminant mixture and associated risks to exposed biota: A review
Creators: name: Kennedy, Emily K. C.
name: Perono, Genevieve A.
name: Nemez, Dion B.
name: Holloway, Alison C.
name: Thomas, Philippe J.
name: Letcher, Robert
name: Marvin, Chris
name: Stetefeld, Jorg
name: Stout, Jake
name: Peters, Oliver
name: Palace, Vince
name: Tomy, Gregg
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: For years, cannabis has been largely used for its mind-altering properties. However, the discovery of its medicinal and therapeutic attributes has led to increased medicinal use. With recent legalization of cannabis in Canada, there is an evolving proliferation of the commercial availability of cannabis-containing products, and changes to patterns of use amongst adults are anticipated. Research into the potential harmful effects from increased use due to legalization have begun in humans; however, to our knowledge, investigations into the environmental occurrence and outcomes in fish and wildlife have been largely overlooked. Increasingly potent cannabis strains are also entering both commercial and medicinal sectors thus adding to the potential risk that this product poses to the environment. Indeed, emerging evidence reveals that current wastewater treatment has limited ability to remove bioactive components of cannabis thus allowing their entry into aquatic ecosystems Furthermore, there is very little known regarding the effects, mechanisms and impacts of cannabis exposure in exposed biota, and is currently limited to a few lab-based and field-based studies in a handful of fish species (e.g. zebrafish). This review will discuss the therapeutic uses of cannabis and its constituents, as well as examine its environmental fate and potential to affect aquatic ecosystems in Canada.
Modeling Cascading Failures in the North American Power Grid
Creators: name: Kinney, Ryan
name: Crucitti, Paolo
name: Albert, Reka
name: Latora, Vito
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The North American power grid is one of the most complex technological networks, and its interconnectivity allows both for long-distance power transmission and for the propagation of disturbances. We model the power grid using its actual topology and plausible assumptions about the load and overload of transmission substations. Our results indicate that the loss of a single substation can lead to a 25% loss of transmission efficiency by triggering an overload cascade in the network. We systematically study the damage inflicted by the loss of single nodes, and find three universal behaviors, suggesting that 40% of the transmission substations lead to cascading failures when disrupted. While the loss of a single node can inflict substantial damage, subsequent removals have only incremental effects, in agreement with the topological resilience to less than 1% node loss.
description: 6 pages, 6 figures
Community detection in multiplex networks based on orthogonal nonnegative matrix tri-factorization
Creators: name: Ortiz-Bouza, Meiby
name: Aviyente, Selin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Networks are commonly used to model complex systems. The different entities in the system are represented by nodes of the network and their interactions by edges. In most real life systems, the different entities may interact in different ways necessitating the use of multiplex networks where multiple links are used to model the interactions. One of the major tools for inferring network topology is community detection. Although there are numerous works on community detection in single-layer networks, existing community detection methods for multiplex networks mostly learn a common community structure across layers and do not take the heterogeneity across layers into account. In this paper, we introduce a new multiplex community detection method that identifies communities that are common across layers as well as those that are unique to each layer. The proposed method, Multiplex Orthogonal Nonnegative Matrix Tri-Factorization, represents the adjacency matrix of each layer as the sum of two low-rank matrix factorizations corresponding to the common and private communities, respectively. Unlike most of the existing methods, which require the number of communities to be pre-determined, the proposed method also introduces a two stage method to determine the number of common and private communities. The proposed algorithm is evaluated on synthetic and real multiplex networks, as well as for multiview clustering applications, and compared to state-of-the-art techniques.
Robust Transport of the Edge Modes along the Photonic Topological Interfaces of Different Configurations
Creators: name: Hajivandi, J.
name: Kurt, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Two-dimensional photonic crystals made of six air holes on a core-shell dielectric material has been proposed to study the newly emerged photonic quantum spin Hall insulator. Specifically, radii modification of the air holes and core-shell without breaking time-reversal (TR) symmetry are supported by the C_6 point group symmetry upon a proposed scheme. It is shown that multiple topological transitions from an ordinary insulator with zero spin Chern number (Cs) to a topological insulator with a non-zero Cs can be achieved by modifying the geometry of the photonic structure. Studying the two counter-propagating helical edge modes which have the opposite group velocities are of individual importance for various optical purposes like scattering-free waveguides protected to various defects, disorders and strong light-matter interactions. We show that topological edge states demonstrate slow light characteristics. The findings emphasize the fact that exploring topological phase transition can be applied as a unique approach for realizing light transport, robust energy transportation and slow light in integrated photonic circuits and devices.
Low regularity well-posedness for KP-I equations: the dispersion-generalized case
Creators: name: Sanwal, Akansha
name: Schippa, Robert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q35, 35Q53

description: We prove new well-posedness results for dispersion-generalized Kadomtsev--Petviashvili I equations in $\mathbb{R}^2$, which family links the classical KP-I equation with the fifth order KP-I equation. For strong enough dispersion, we show global well-posedness in $L^2(\mathbb{R}^2)$. To this end, we combine resonance and transversality considerations with Strichartz estimates and a nonlinear Loomis--Whitney inequality. Moreover, we prove that for small dispersion, the equations cannot be solved via Picard iteration. In this case, we use an additional frequency dependent time localization.
description: corrections in the proof of Lemma 4.2, results unchanged, 41 pages
The kissing problem in three dimensions
Creators: name: Musin, Oleg R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 52C99

description: The kissing number k(3) is the maximal number of equal size nonoverlapping spheres in three dimensions that can touch another sphere of the same size. This number was the subject of a famous discussion between Isaac Newton and David Gregory in 1694. The first proof that k(3)=12 was given by Schütte and van der Waerden only in 1953. In this paper we present a new solution of the Newton-Gregory problem that uses our extension of the Delsarte method. This proof relies on basic calculus and simple spherical geometry.
description: 10 pages, 5 figures
NONPARAMETRIC MODEL FOR MEASURING IMPACT OF INPUTS DENSITY ON EGYPTIAN TOMATO PRODUCTION EFFICIENCY
Creators: name: Alboghdady, Mohamed Altabei
name: Alboghdady, Mohamed Altabei
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Production Economics
subject: Productivity Analysis
subject: Allocative efficiency
subject: cost efficiency
subject: data envelopment analysis
subject: inputs overuse
subject: technical efficiency

description: The present study was conducted to measure the production efficiency of tomatoes in Ismailia, Egypt, adopting Data Envelopment analysis (DEA) procedures. Fifty eight of tomato farms had been surveyed in Ismailia governorate for the season July to October 2013. DEA was adopted to estimate technical, allocative, cost, and scale efficiency scores for the surveyed farms. A two limited Tobit regression analysis was used to estimate the impact of inputs overuse on efficiency measures. The analysis revealed that the estimated mean of the technical efficiency was 91 percent indicating that the total output can be further increased with efficient use of resources and technology. The results of allocative, cost, and scale efficiency measures showed substantial degree of inefficiency. The inefficiency can be attributed to overuse of land, seedlings, manure nitrogen fertilizers, potassium fertilizers, and labor. Most of scale inefficiency (about 76%) arisen from farms revealing increased returns to scale implying that most of the farms operate at sub-optimal level. Therefore, recommendations issued by agricultural extension agency in Egypt need to be revised in the light of efficiency measures rather Than production maximization.
A normal form for admissible characters in the sense of Lynch
Creators: name: Baur, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B45

description: Parabolic subalgebras $\frak{p}$ of semisimple Lie algebras define a $\Bbb{Z}$-grading of the Lie algebra. If there exists a nilpotent element in the first graded part of $\frak{g}$ on which the adjoint group of $\frak{p}$ acts with a dense orbit, the parabolic subalgebra is said to be nice. The corresponding nilpotent element is also called admissible. Nice parabolic subalgebras of simple Lie algebras have been classified. In the case of Borel subalgebras a Richardson element of $\frak{g}_1$ is exactly one that involves all simple root spaces. It is however difficult to write down such nilpotent elements for general parabolic subalgebras. In this paper we give an explicit construction of admissible elements in $\frak{g}_1$ that uses as few root spaces as possible.
description: v2 contains a new section where normal forms of Richardson elements for the exceptional Lie algebras are given v3 contains corrections of the lists for the exceptional Lie algebras
Aktualny stan sektora biogazu rolniczego w Polsce na tle krajów Unii Europejskiej
Creators: name: Powałka, Małgorzata
name: Klepacka, Anna
name: Skudlarski, Jacek
name: Golisz, Ewa
name: Powałka, Małgorzata
name: Klepacka, Anna
name: Skudlarski, Jacek
name: Golisz, Ewa
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: International Relations/Trade
subject: Resource /Energy Economics and Policy
subject: biogas
subject: energy
subject: biogas plant
subject: / biogaz
subject: energia
subject: biogazownia rolnicza

description: Biogas plants utilizing agricultural feedstock are one of the technologies generating energy from renewable sources. Energy production from biogas enables Poland to meet the National Indicator Target mandate and the obligations resulting from the Climate and Energy Agreement. The Agreement assumes the share of energy from renewable sources to reach 15 percent of total energy use, and a ten percent share in the biofuel market by 2020. The biogas market has entered the phase of growth and expansion in Poland. Poland places 14 amongst the EU member countries in spite of the wide availability of feedstock for agricultural biogas generation. In 2013, 32 agricultural biogas plants operating in Poland have capacity to generate 130.33 mln m3. Most plants have the installed capacity of energy generation in excess of 1 MW. Biogas is strongly supported by the EU member-countries, but the technological development of the existing biogas facilities varies. Germany, Italy and Austria are the largest biogas producers. / Synopsis. Biogazownia rolnicza jest jednym ze sposobów pozyskania energii na bazie odnawialnych źródeł energii (OZE). Produkcja energii pochodząca z biogazu rolniczego umożliwia wypełnienie przez Polskę nałożonych Narodowych Celów Wskaźnikowych oraz postanowień Pakietu Klimatyczno-Energetycznego. Założenia te, zakładają wzrost udziału odnawialnych źródeł energii w finalnym zużyciu energii do 15%, a w rynku paliw transportowych do 2020 roku do 10%. Rynek biogazu w Polsce znajduje się w fazie wzrostu. Na tle Unii Europejskiej zajmujemy 14 miejsce, pomimo szerokiego zaplecza surowcowego do produkcji biogazu rolniczego. W kraju w 2013 r. funkcjonują 32 biogazownie rolnicze, o łącznej wydajności instalacji do produkcji biogazu 130,33 mln m3. W większości są to przedsiębiorstwa o zainstalowanej mocy elektrycznej powyżej 1 MWe.. Biogaz cieszy się silnym wsparciem krajów Unii Europejskiej, natomiast stan rozwoju technicznego istniejących biogazowni jest zróżnicowany. Największą produkcję biogazu odnotowują Niemcy, Włochy i Austria.