cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Robotics and Automation Using Artificial Intelligence
Creators: name: Paygude, Vaishnavi
name: Thorat, Jaywardhan
name: Kakade, Mayur
name: Waghmode, Sairaj
name: Shimpi, Rohit
Publisher: name: Zenodo
Year: 2024

description: In engineering province robotics is one of the cognitive perspectives of human communication or it is concerned with a synod of perception of action. In Today's Tech World Artificial Intelligence is an essential tool that provides effective analytical business solutions & and plays a significant role in the domain of robotics and has several similarities to human behavior which may drive the real world. This paper shows the significant blend of Artificial Intelligence and robotics which transform entire industries, and technological improvement of robotics application & and utilization. It also focuses on different aspects of targets like marketing, home appliances, medical science, Smart agriculture, and many more which includes open issues and technological challenges that arise from this combination and concludes that robotics with AI can work in the real world with real objects. Further AI-based robotics is a very important area in economics and organizational consequence, The implementation of automation in any organizational design has an impact on the overall economy and infrastructure providing a wider direction for further research on Robotics and IoT two terms each covering a myriad of technologies and concepts.
A representation theorem for MV-algebras
Creators: name: Jenca, Gejza
Publisher: name: arXiv
Year: 2006
Subjects: subject: Rings and Algebras (math.RA)
subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 06D35, 06D05

description: An {\em MV-pair} is a pair $(B,G)$ where $B$ is a Boolean algebra and $G$ is a subgroup of the automorphism group of $B$ satisfying certain conditions. Let $\sim_G$ be the equivalence relation on $B$ naturally associated with $G$. We prove that for every MV-pair $(B,G)$, the effect algebra $B/\sim_G$ is an MV- effect algebra. Moreover, for every MV-effect algebra $M$ there is an MV-pair $(B,G)$ such that $M$ is isomorphic to $B/\sim_G$.
Measurement of the production cross-sections of $π^\pm$ in p-C and $π^\pm$-C interactions at 12 GeV/c
Creators: name: HARP Collaboration
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The results of the measurements of the double-differential production cross-sections of pions in p-C and $π^\pm$-C interactions using the forward spectrometer of the HARP experiment are presented. The incident particles are 12 GeV/c protons and charged pions directed onto a carbon target with a thickness of 5% of a nuclear interaction length. For p-C interactions the analysis is performed using 100035 reconstructed secondary tracks, while the corresponding numbers of tracks for $π^-$-C and $π^+$-C analyses are 106534 and 10122 respectively. Cross-section results are presented in the kinematic range 0.5 GeV/c $\leq p_π
description: accepted for publication in Astroparticle Physics
A study of heavy oil ultrafiltration using ceramic membranes
Creators: name: Duong, Anna Manhoa
Publisher: name: University of British Columbia
Year: 2009

description: Heavy oil refining is complicated by the presence of relatively high concentrations of contaminants that include sulfur, nitrogen, heavy crude components (asphaltenes) and heavy metals such as nickel and vanadium. The heavy crude components lead to coke formation and the metals deactivate catalysts irreversibly during hydroprocessing. In the present study, the feasibility of heavy oil ultrafiltration using ceramic membranes to remove the problematic asphaltenic components has been examined. The study was divided into two parts: an experimental study and a modeling study of membrane fouling. A number of experiments were conducted to examine the effect of membrane pore size, crossflow velocity and membrane regeneration on the permeate flux and asphaltene reduction. Results from the experiments showed that both the flux and the asphaltene concentration of the permeate declined with time due to membrane pore restriction. For example, with a O.lfim nominal pore size membrane operating at 110°C, 600kPa and a cross-flow velocity of 6.9m/s, a flux of 55 kg/m2/day and an asphaltene reduction of 80wt% were obtained after 9 hours on stream. Permeate flux increased with increased cross-flow velocity and membrane pore size whereas asphaltene reduction increased with decreasing membrane pore size. A number of correlations were obtained for the viscosity, density, vanadium and nickel content versus asphaltene content in heavy oil.
Πιστωτικός κίνδυνος και Βασιλεία:
Creators: name: Σαμάνδη, Ελένη Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Πιστωτικός κίνδυνος
Βασιλεία Ι
Βασιλεία ΙΙ
Credit Risk
Basel I
Basel II

description: Στην παρούσα εργασία αρχικά πραγματοποιείται η παρουσίαση τόσο του τραπεζικού συστήματος όσο και του χρηματοπιστωτικού καθώς και όλες οι εξελίξεις που έχουν λάβει χώρα, οι οποίες οδήγησαν στην κρίση του τραπεζικού συστήματος δημιουργώντας τη σημερινή οικονομική πραγματικότητα. Έπειτα, επιχειρείται η εξέταση της Βασιλείας Ι και της Βασιλείας ΙΙ που αφορούν στη λειτουργία των τραπεζών διεθνώς αποτελώντας το αποδοτικότερο μέσο και τη γρηγορότερη οδό για την κεφαλαιακή επάρκεια. Πιο συγκεκριμένα, θα εξεταστεί η ιστορική εξέλιξη του πλαισίου, θα αναφερθούν αναλυτικά τα χαρακτηριστικά της Βασιλείας πραγματοποιώντας εκτεταμένη αναφορά στους Πυλώνες Ι,ΙΙ και ΙΙΙ. Στη συνέχεια η εργασία ασχολείται με το θέμα της διαχείρισης του κινδύνου τόσο σε επίπεδο επιχειρήσεων όσο και στην οικονομία γενικότερα. Η εκτίμηση και η διαχείριση του κινδύνου αποτελούν ιδιαίτερα σημαντικές διαδικασίες με τη σημαντικότητα τους να έχει συνειδητοποιηθεί πλήρως και διεθνώς τα τελευταία χρόνια. Γεγονός που αποδεικνύεται από τα διάφορα υποδείγματα μέτρησης και διαχείρισης του κινδύνου που έχουν αναπτυχτεί πρόσφατα. Στην παρούσα εργασία θα γίνει αναφορά σε όλα τα είδη κινδύνου ωστόσο ενδελεχώς θα εξεταστεί μόνο ο πιστωτικός κίνδυνος και θα παρουσιαστούν όλα τα χαρακτηριστικά του αλλά και οι τεχνικές που εφαρμόζονται για την αντιμετώπιση του. Η εργασία ολοκληρώνεται με την παράθεση συμπερασμάτων τόσο προσωπικών όσο και επιστημονικών επί του θέματος της Βασιλείας ΙΙ και του σημαντικού ρόλου της διαχείρισης κινδύνου.
description: The thesis primarily presents the banking and financial system in addition to the developments that have taken place which have led to the banking crisis creating the current economic reality. Moreover it attempts to examine the Basel I and Basel II that manage the international banking consisting the most efficient and immediate instrument to capital adequacy. More specifically, the historical development of Basel I and Basel II will be examined and its characteristics will be thoroughly discussed in reference to Pillars I, II and III. Later on, the paper examines the issue of risk management at the business level as well as the economy as a whole. Assessment and risk management are particularly important procedures whose significance have only been realized in the recent years. The acknowledgement of their importance is proved by the various measuring tools that have been created recently. In the thesis all types of risk will be mentioned, however only credit risk, its characteristics and the coping techniques will be discussed in detail. In the end, both scientific and personal conclusions are presented underlining the important role of Basel I and Basel II in risk management.
Why haven't loose globular clusters collapsed yet?
Creators: name: De Marchi, Guido
name: Paresce, Francesco
name: Pulone, Luigi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the discovery of a surprising observed correlation between the slope of the low-mass stellar global mass function (GMF) of globular clusters (GCs) and their central concentration parameter c=log(r_t/r_c), i.e. the logarithmic ratio of tidal and core radii. This result is based on the analysis of a sample of twenty Galactic GCs with solid GMF measurements from deep HST or VLT data. All the high-concentration clusters in the sample have a steep GMF, most likely reflecting their initial mass function. Conversely, low-concentration clusters tend to have a flatter GMF implying that they have lost many stars via evaporation or tidal stripping. No GCs are found with a flat GMF and high central concentration. This finding appears counter-intuitive, since the same two-body relaxation mechanism that causes stars to evaporate and the cluster to eventually dissolve should also lead to higher central density and possibly core-collapse. Therefore, more concentrated clusters should have lost proportionately more stars and have a shallower GMF than low concentration clusters, contrary to what is observed. It is possible that severely depleted GCs have also undergone core collapse and have already recovered a normal radial density profile. It is, however, more likely that GCs with a flat GMF have a much denser and smaller core than suggested by their surface brightness profile and may well be undergoing collapse at present. In either case, we may have so far seriously underestimated the number of post core-collapse clusters and many may be lurking in the Milky Way.
description: Four pages, one figure, accepted for publication in ApJ Letters
Observations of Positive Parenting from Online Parent–Child Interactions at Age 1
Creators: name: Waller, Rebecca
name: Paz, Yael
name: Himes, Megan M.
name: White, Lauren K.
name: Rodriguez, Yuheiry
name: Gorgone, Alesandra
name: Luby, Joan
name: Gerstein, Emily D.
name: Brady, Rebecca G.
name: Chaiyachati, Barbara H.
name: Duncan, Andrea F.
name: Barzilay, Ran
name: Kornfield, Sara L.
name: Burris, Heather H.
name: Seidlitz, Jakob
name: Parish-Morris, Julia
name: Laney, Nina
name: Gur, Raquel E.
name: Njoroge, Wanjikũ F. M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Mental Health

description: Objective. Brief, reliable, and cost-effective methods to assess parenting are critical for advancing parenting research. Design. We adapted the Three Bags task and Parent Child Interaction Rating System (PCIRS) for rating online visits with 219 parent–child dyads (White, n = 104 [47.5%], Black, n = 115 [52.5%]) and combined the video data with survey data collected during pregnancy and when children were aged 1. Results. The PCIRS codes of positive regard, stimulation of child cognitive development, and sensitivity showed high reliability across the three parent–child interaction tasks. A latent positive parenting factor combining ratings across codes and tasks showed good model fit, which was similar regardless of parent self-identified race or ethnicity, age, socioeconomic disadvantage, marital/partnered status, and parity, as well as methodological factors relevant to the online video assessment method (e.g., phone vs. laptop/tablet). In support of construct validity, observed positive parenting was related to parent-reported positive parenting and child socioemotional development. Finally, parent reports of supportive relationships in pregnancy but not neighborhood safety or pandemic worries, were prospectively related to higher positive parenting observed at age 1. With the exception of older parental age and married/partnered status, no other parent, child, sociodemographic, or methodological variables were related to higher overall video exclusions across tasks. Conclusions. PCIRS may provide a reliable approach to rate positive parenting at age 1, providing future avenues for developing more ecologically valid assessments and implementing interventions through online encounters that may be more acceptable, accessible, or preferred among parents of young children.
The Use of New Media for Overcoming Challenges During the COVID-19 Pandemic Among Overseas Filipino Workers in Singapore
Creators: name: Salazar, Cheryl Grace
Publisher: name: Zenodo
Year: 2024
Subjects: Development communication
Overseas Filipino Workers
Uses and Gratifications Theory
New media

description: This study explored how Overseas Filipino Workers (OFWs) in Singapore engaged with new media to meet their diverse needs during the COVID-19 pandemic.
An efficient sampling algorithm for Variational Monte Carlo
Creators: name: Scemama, Anthony
name: Lelièvre, Tony
name: Stoltz, Gabriel
name: Cancès, Eric
name: Caffarel, Michel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We propose a new algorithm for sampling the $N$-body density $|Ψ({\bf R})|^2/\int_{\mathbb{R}^{3N}} |Ψ|^2$ in the Variational Monte Carlo (VMC) framework. This algorithm is based upon a modified Ricci-Ciccotti discretization of the Langevin dynamics in the phase space $({\bf R},{\bf P})$ improved by a Metropolis acceptation/rejection step. We show through some representative numerical examples (Lithium, Fluorine and Copper atoms, and phenol molecule), that this algorithm is superior to the standard sampling algorithm based on the biased random walk (importance sampling).
description: 23 pages
Periodic solutions and the avoidance of pull--in instability in non--autonomous micro--electro--mechanical systems
Creators: name: Kadyrov, Shirali
name: Kashkynbayev, Ardak
name: Skrzypacz, Piotr
name: Kaloudis, Konstantinos
name: Bountis, Anastasios
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study periodic solutions of a one-degree of freedom micro-electro-mechanical system (MEMS) with a parallel-plate capacitor under $T$--periodic electrostatic forcing. We obtain analytical results concerning the existence of $T-$ periodic solutions of the problem in the case of arbitrary nonlinear restoring force, as well as when the moving plate is attached to a spring fabricated using graphene. We then demonstrate numerically on a $T-$ periodic Poincar{é} map of the flow that these solutions are generally locally stable with large "islands" of initial conditions around them, within which the pull-in stability is completely avoided. We also demonstrate graphically on the Poincar{é} map that stable periodic solutions with higher period $nT, n>1$ also exist, for wide parameter ranges, with large "islands" of bounded motion around them, within which all initial conditions avoid the pull--in instability, thus helping us significantly increase the domain of safe operation of these MEMS models.
Towards Communication-efficient and Attack-Resistant Federated Edge Learning for Industrial Internet of Things
Creators: name: Liu, Yi
name: Zhao, Ruihui
name: Kang, Jiawen
name: Yassine, Abdulsalam
name: Niyato, Dusit
name: Peng, Jialiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Federated Edge Learning (FEL) allows edge nodes to train a global deep learning model collaboratively for edge computing in the Industrial Internet of Things (IIoT), which significantly promotes the development of Industrial 4.0. However, FEL faces two critical challenges: communication overhead and data privacy. FEL suffers from expensive communication overhead when training large-scale multi-node models. Furthermore, due to the vulnerability of FEL to gradient leakage and label-flipping attacks, the training process of the global model is easily compromised by adversaries. To address these challenges, we propose a communication-efficient and privacy-enhanced asynchronous FEL framework for edge computing in IIoT. First, we introduce an asynchronous model update scheme to reduce the computation time that edge nodes wait for global model aggregation. Second, we propose an asynchronous local differential privacy mechanism, which improves communication efficiency and mitigates gradient leakage attacks by adding well-designed noise to the gradients of edge nodes. Third, we design a cloud-side malicious node detection mechanism to detect malicious nodes by testing the local model quality. Such a mechanism can avoid malicious nodes participating in training to mitigate label-flipping attacks. Extensive experimental studies on two real-world datasets demonstrate that the proposed framework can not only improve communication efficiency but also mitigate malicious attacks while its accuracy is comparable to traditional FEL frameworks.
Towards forecast techniques for business analysts of large commercial data sets using matrix factorization methods
Creators: name: Rivera-Castro, Rodrigo
name: Nazarov, Ivan
name: Burnaev, Evgeny
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: This research article suggests that there are significant benefits in exposing demand planners to forecasting methods using matrix completion techniques. This study aims to contribute to a better understanding of the field of forecasting with multivariate time series prediction by focusing on the dimension of large commercial data sets with hierarchies. This research highlights that there has neither been sufficient academic research in this sub-field nor dissemination among practitioners in the business sector. This study seeks to innovate by presenting a matrix completion method for short-term demand forecast of time series data on relevant commercial problems. Albeit computing intensive, this method outperforms the state of the art while remaining accessible to business users. The object of research is matrix completion for time series in a big data context within the industry. The subject of the research is forecasting product demand using techniques for multivariate hierarchical time series prediction that are both precise and accessible to non-technical business experts. Apart from a methodological innovation, this research seeks to introduce practitioners to novel methods for hierarchical multivariate time series prediction. The research outcome is of interest for organizations requiring precise forecasts yet lacking the appropriate human capital to develop them.
description: Journal of Physics: Conference Series, 2018
Construction and clustering properties of the 2-d non-linear sigma-model form factors: O(3), O(4), large n examples
Creators: name: Balog, J.
name: Weisz, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Multi-particle form factors of local operators in integrable models in two dimensions seem to have the property that they factorize when one subset of the particles in the external states are boosted by a large rapidity with respect to the others. This remarkable property, which goes under the name of form factor clustering, was first observed by Smirnov in the O(3) non-linear sigma-model and has subsequently found useful applications in integrable models without internal symmetry structure. In this paper we conjecture the nature of form factor clustering for the general O(n) sigma-model and make some tests in leading orders of the 1/n expansion and for the special cases n=3,4.
description: 61 pages, LaTeX
Технология кормления при выращивании поросят на откорме
Creators: name: Ермолова Е.М.
name: Ермолов С.М.
name: Косилов В.И.
Publisher: name: Эффективное животноводство
Year: 2021
Subjects: откорм
поросята
технология кормления
рацион
среднесуточный прирост
fattening
piglets
feeding technology
diet
average daily gain.

description: Свиноводство в России – одна из важнейших отраслей животноводства. На долю свиноводства в настоящий период приходиться порядка 20% валовой продукции животноводства РФ. Поддержка фермерам, специализирующимся на производстве свинины, в настоящее время оказывается в том числе и со стороны государства. Прибыльность этого вида животноводства в РФ на настоящий момент определяется несколькими факторами, главный из которых – затраты корма, являющийся важным показателем любого сельскохозяйственного предприятия, занимающийся производством животноводческой продукции.
description: Pig breeding by distribution in Russia is retail – one producer of the most important trade divisions of the whole livestock industry. The share of pig breeding in the current period accounts for about 20% of the impact of the gross livestock production by the distribution of the Russian Federation. Support for farmers, commercial specializing is accompanied on the outgoing production of the division of pork, currently accompanied by a time impact, including from the state. The profitability of demand for this type of animal husbandry is external in the Russian Federation, at this, the present supply at the moment of activity is determined by several factors, the profit is the main service of which the producer is the cost of being feed, distribution, which is an economically important indicator of the service of any elements of an agricultural information enterprise, promoting the distribution of production elements of a wide range of livestock products.
Modelling and dynamic simulation of CTMP plant
Creators: name: Qian, Xingsheng
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis, mathematical models for the process units of a chemi-thermomechanical pulping (CTMP) plant have been developed. The models were developed based on first principles and empirical modelling approaches. The models have been used to simulate the dynamic behavior of a CTMP plant. A CTMP plant is composed of four major processes: the chip pretreatment process, the refining process, the pulp processing process, and finally the bleaching process. A mill audit was performed to study the chip quality variations along the chip pretreatment process and typical variations were used for the simulation of a CTMP plant. The refining process was modelled based on the concept of specific energy and refining intensity. The model was used to predict pulp properties and handsheet properties from the refiner operating conditions. Data from mill trials and literature were compared with the prediction and there was good agreement between predicted and measured values. The effects of reject rate on fibre fractionation, freeness, and consistency through the screens were investigated and models were developed. In modelling the bleaching process, a kinetic model was used to relate the final pulp brightness to the hydrogen peroxide charge, temperature, and retention time. The flow pattern of the pulp stock in the bleaching tower was studied and modelled as a combination of continuous stirred tank reactors and a plug flow reactor. The dynamic simulations revealed the impact of the major disturbances and operating conditions on the performance of the whole pulping process. Control strategies have been proposed and tested for the bleaching plant. This work has systematically studied the dynamics of a CTMP plant and brought a thorough understanding of the dynamic behavior of the plant. The models developed in this work can be used as a tool for process modification, process operation, and process control.
Hydrometallurgical recovery of α-Fe2O3 from red mud and photo-Fenton degradation of organic dye using CuO promoted α-Fe2O3
Creators: name: Nanda, Binita
name: Mishra, Bibhuti Bhusan
name: Nayak, Rasmita
name: Devi, Niharbala
Publisher: name: Taylor & Francis
Year: 2020
Subjects: 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: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: The ecological balance is disturbed by the massive generation of solid waste (red mud) from aluminum industries. It contained various types of metal oxides with different proportions, and it is essential to extract these valuable metals to maintain sustainability. The hydrometallurgical route is applied to extract hematite (α-Fe2O3) from red mud. This route involves leaching, solvent extraction, and precipitation. The α-Fe2O3 is mixed with different weight percentages of CuO to form a heterostructure (CuO/α-Fe2O3). The malachite green (MG) is degraded using the α-Fe2O3-CuO catalyst for photo-Fenton reaction. All the composites are characterised by XRD, FTIR, UV-vis DRS, PL, and electrochemical study. XRD figure confirmed that hematite (α-Fe2O3) is extracted successfully from red mud, and goethite (α-FeOOH) is suppressed. The reducibility nature of CuO, created a synergism between α-Fe2O3 and CuO, which leads to suppression of e−/h+ recombination by proper charge transfer. It is confirmed through PL spectra and electrochemical study (Nyquist plot). 20CuO/α-Fe2O3 showed the maximum degradation (98%) of malachite green (MG).
Exact solution of the position-dependent effective mass and angular frequency Schrödinger equation: harmonic oscillator model with quantized confinement parameter
Creators: name: Jafarov, E. I.
name: Nagiyev, S. M.
name: Oste, R.
name: Van der Jeugt, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q05

description: We present an exact solution of a confined model of the non-relativistic quantum harmonic oscillator, where the effective mass and the angular frequency are dependent on the position. The free Hamiltonian of the proposed model has the form of the BenDaniel--Duke kinetic energy operator. The position-dependency of the mass and the angular frequency is such that the homogeneous nature of the harmonic oscillator force constant $k$ and hence the regular harmonic oscillator potential is preserved. As a consequence thereof, a quantization of the confinement parameter is observed. It is shown that the discrete energy spectrum of the confined harmonic oscillator with position-dependent mass and angular frequency is finite, has a non-equidistant form and depends on the confinement parameter. The wave functions of the stationary states of the confined oscillator with position-dependent mass and angular frequency are expressed in terms of the associated Legendre or Gegenbauer polynomials. In the limit where the confinement parameter tends to $\infty$, both the energy spectrum and the wave functions converge to the well-known equidistant energy spectrum and the wave functions of the stationary non-relativistic harmonic oscillator expressed in terms of Hermite polynomials. The position-dependent effective mass and angular frequency also become constant under this limit.
Large Scale Flows from Orion-South
Creators: name: Henney, W. J.
name: O'Dell, C. R.
name: Zapata, Luis A.
name: Garcia-Diaz, Ma. T.
name: Rodriguez, Luis F.
name: Robberto, Massimo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Multiple optical outflows are known to exist in the vicinity of the active star formation region called Orion-South (Orion-S). We have mapped the velocity of low ionization features in the brightest part of the Orion Nebula, including Orion-S, and imaged the entire nebula with the Hubble Space Telescope. These new data, combined with recent high resolution radio maps of outflows from the Orion-S region, allow us to trace the origin of the optical outflows. It is confirmed that HH 625 arises from the blueshifted lobe of the CO outflow from 136-359 in Orion-S while it is likely that HH 507 arises from the blueshifted lobe of the SiO outflow from the nearby source 135-356. It is likely that redshifted lobes are deflected within the photon dominated region behind the optical nebula. This leads to a possible identification of a new large shock to the southwest from Orion-S as being driven by the redshifted CO outflow arising from 137-408. The distant object HH 400 is seen to have two even further components and these all are probably linked to either HH 203, HH 204, or HH 528. Distant shocks on the west side of the nebula may be related to HH 269. The sources of multiple bright blueshifted Herbig-Haro objects (HH 202, HH 203, HH 204, HH 269, HH 528) remain unidentified, in spite of earlier claimed identifications. Some of this lack of identification may arise from the fact that deflection in radial velocity can also produce a change in direction in the plane of the sky. The best way to resolve this open question is through improved tangential velocities of low ionization features arising where the outflows first break out into the ionized nebula.
description: Astronomical Journal, in press. Some figures are shown at reduced resolution. A full-resolution version is available at http://ifront.org/wiki/Orion_South_Outflows_Paper
From Control to Mathematics-Part I: Controllability-Based Design for Iterative Methods in Solving Linear Equations
Creators: name: Meng, Deyuan
name: Wu, Yuxin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In the interaction between control and mathematics, mathematical tools are fundamental for all the control methods, but it is unclear how control impacts mathematics. This is the first part of our paper that attempts to give an answer with focus on solving linear algebraic equations (LAEs) from the perspective of systems and control, where it mainly introduces the controllability-based design results. By proposing an iterative method that integrates a learning control mechanism, a class of tracking problems for iterative learning control (ILC) is explored for the problem solving of LAEs. A trackability property of ILC is newly developed, by which analysis and synthesis results are established to disclose the equivalence between the solvability of LAEs and the controllability of discrete control systems. Hence, LAEs can be solved by equivalently achieving the perfect tracking tasks of resulting ILC systems via the classic state feedback-based design and analysis methods. It is shown that the solutions for any solvable LAE can all be calculated with different selections of the initial input. Moreover, the presented ILC method is applicable to determining all the least squares solutions of any unsolvable LAE. In particular, a deadbeat design is incorporated to ILC such that the solving of LAEs can be completed within finite iteration steps. The trackability property is also generalized to conventional two-dimensional ILC systems, which creates feedback-based methods, instead of the common used contraction mapping-based methods, for the design and convergence analysis of ILC.
IML4DQ: Interactive Machine Learning for Data Quality with applications in Credit Risk: Online appendices
Creators: name: Tiukhova, Elena
name: Salcuni, Adriano
name: Oguz, Can
name: Forte, Fabio
name: Baesens, Bart
name: Snoeck, Monique
Publisher: name: Zenodo
Year: 2024
Subjects: Data Quality
Credit Risk Management
Interactive Machine Learning

description: Online appendices for the paper:

Tiukhova, E., Salcuni, A., Oguz, C., Forte, F., Baesens, B., Snoeck, M. (2024). IML4DQ: Interactive Machine Learning for Data Quality with applications in Credit Risk. In: Cooperative Information Systems. CoopIS 2024. Lecture Notes in Computer Science, Springer, Cham
A Random Antenna Subset Selection Jamming Method against Multistatic Radar System
Creators: name: Wang, Xiangtuan
name: Liu, Yimin
name: Huang, Tianyao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Multistatic radar system (MSRS) is considered an effective scheme to suppress mainlobe jamming, since it has higher spatial resolution enabling jamming cancellation from spatial domain. To develop electronic countermeasures against MSRS, a random array subset selection (RASS)jamming method is proposed in this paper. In the RASS jammer, elements of the array antenna are activated randomly, leading to stable mainlobe and random sidelobes, different from the traditional jammer that applies the complete antenna array enjoying constant mainlobe and sidelobes. We study the covariance matrix of jamming signals received by radars, and derive its rank, revealing that the covariance matrix is of full rank. We also calculate the output jamming to signal and noise ratio (JSNR) after the subspace-based jamming suppression methods used in MSRS under the proposed jamming method, which demonstrates that the full rank property invalidates such suppression methods. Numerical results verify our analytical deduction and exhibit the improved countermeasure performance of our proposed RASS jamming method compared to the traditional one.
Η επέκταση του Λήμματος Schwarz-Pick από τους Beardon και Minda
Creators: name: Ευδωρίδου, Βασιλική Θεμιστοκλή
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Λήμμα Schwarz-Pick
υπερβολική απόσταση
υπερβολικό πηλίκο διαφορών
Schwarz-Pick Lemma
hyperbolic distance
hyperbolic difference quotient

description: Στόχος της διπλωματικής εργασίας είναι να παρουσιάσει το άρθρο “A multi-point Schwarz-Pick Lemma” των A.F. Beardon και D. Minda που δημοσιεύτηκε στο περιοδικό Journal d’ Analyse Mathématique, Vol. 92 (σελ. 81-104) το 2004, καθώς και ένα μέρος του άρθρου “Dieudonné Points of Holomorphic Self-Maps of Regions” των ίδιων συγγραφέων που δημοσιεύτηκε στο περιοδικό Computational Methods and Function Theory, Vol. 8 (σελ. 409-432) το 2008. Στο πρώτο άρθρο οι συγγραφείς με τη χρήση υπερβολικής γεωμετρίας δίνουν μια επέκταση του Λήμματος Schwarz-Pick για τρία σημεία αντί των δύο που υπάρχουν στην κλασική μορφή του Λήμματος. Με βάση το Θεώρημα αυτό, το οποίο είναι το κύριο θεώρημα του άρθρου, αποδεικνύουν μια σειρά πορισμάτων, μερικά εκ των οποίων προϋπήρχαν, δύο θεωρήματα αυξητικότητας, ορισμένα θεωρήματα παραμόρφωσης καθώς και ένα θεώρημα παρεμβολής που είχε αποδειχτεί παλαιότερα σε απλούστερη μορφή. Ακόμη, δίνουν μια επέκταση του Λήμματος Julia για τρία σημεία και παρουσιάζουν απλούστερες και πιο κομψές αποδείξεις για τα Λήμματα Rogosinski και Dieudonné. Συγκεκριμένα για το Λήμμα του Dieudonné, με το οποίο ασχολούνται εκτεταμένα στο δεύτερο άρθρο, χρησιμοποιούν το κύριο θεώρημα του πρώτου άρθρου για να φτάσουν σε μια υπερβολική μορφή του Λήμματος. Επίσης, με αφορμή το Λήμμα ορίζουν τα σημεία Dieudonné ενός απλά συνεκτικού τόπου και παρουσιάζουν ικανές και αναγκαίες συνθήκες για την ύπαρξή τους σε ορισμένες περιπτώσεις.
description: The aim of this master thesis is to present A.F. Beardon’s and D. Minda’s article “A multi-point Schwarz-Pick Lemma” published in Journal d’ Analyse Mathématique, Vol. 92 (p. 81-104) in 2004 and a part of the article “Dieudonné Points of Holomorphic Self-Maps of Regions” of the same writers published in Computational Methods and Function Theory, Vol. 8 (p. 409-432) in 2008. In the first article the writers use hyperbolic geometry to show an extended version of Schwarz-Pick lemma in which there are three points instead of two appeared in the common lemma. Using this theorem, which is the main theorem of the first article, they prove several corollaries, some of which already existed, two growth theorems, some distortion theorems and an interpolation theorem that was proved earlier in a simpler form. Furthermore, they create an extended version of Julia’s lemma using three points and they give simpler and more elegant proofs for Rogosinski’s lemma and Dieudonné’s lemma. Regarding Dieudonné’s lemma, which is discussed in more details in the second article, the writers use the main theorem of the first article to give a hyperbolic form of the lemma. What is more, motivated by the lemma, they define Dieudonné points of a simply connected region and they show sufficient and necessary conditions of their existence in some cases.
Small/Medium scale textile processing industries: case study, sustainable interventions and remediation
Creators: name: Althuri, Avanthi
name: Tiwari, Onkar Nath
name: Gowda, Vanitha T. K.
name: Moyong, Miyon
name: Mohan, S. Venkata
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
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: Developmental Biology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The dyed fabrics from textile industries occupy a significant share in the global economy with a world-wide market. Conventional natural dyes were gradually substituted by synthetic dyes in the wake of burgeoning demand for coloured textiles. Textile dyes are of several types depending on the core chemical structure which determines the solubility, colour and dye class. Often, dyes require treatment with mordants to fix the colour to the fabric and develop different hues. The textile treated dye baths contain residual dye moieties, mordants as well as other chemicals from the overall textile dyeing and finishing processes. For such effluents, proper treatment is a mandate to alleviate dyes associated colour, chemical compounds and organics from the wastewaters prior to release into watercourses. The challenge of textile dye effluents to meet the regulatory limits becomes more problematic when the textile industries are dominated by the unorganised small/medium scale industries and unauthorised sectors. The present review details on the genesis of Indian textile industries, dye types, dyeing process and the impact of dye effluents on health and environment along with a case study. Besides, strategies to replace chemical dyes with natural equivalents and state-of-art textile dye effluent treatment techniques are elaborated.
Εφαρμογές της θεωρίας παιγνίων στην απελευθερωμένη αγορά ηλεκτρικής ενέργειας
Creators: name: Λεσπουρίδου, Ελισάβετ Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Θεωρία παιγνίων
Απελευθερωμένη αγορά ηλεκτρικής ενέργειας
Ισορροπία Nash
Μοντέλο Cournot
Μοντέλο Stackelberg
Game theory
Liberalized electric power market
Nash Equilibrium
Cournot model
Stackelberg model

description: Στην παρούσα διπλωματική εργασία επιχειρείται μία σύντομη παρουσίαση των βασικών, θεμελιωδών εννοιών της θεωρίας παιγνίων και διερευνώνται βιβλιογραφικά οι δυνατότητες εφαρμογής διαφόρων μοντέλων αυτής με σκοπό τη βελτιστοποίηση των στρατηγικών δράσης σε μια απελευθερωμένη αγορά ηλεκτρικής ενέργειας. Αναλυτικότερα, στο πρώτο, εισαγωγικό κεφάλαιο περιγράφονται βασικές έννοιες της θεωρίας παιγνίων όπως είναι η έννοια της ισορροπίας. Εξετάζονται τρία είδη ισορροπίας: η ισορροπία Cournot, Nash και Stackelberg. Στο δεύτερο κεφάλαιο παρουσιάζονται οι βασικοί παράγοντες που απαρτίζουν μια τυπική απελευθερωμένη αγορά ηλεκτρικής ενέργειας, ο ρόλος τους, ο τρόπος λειτουργίας τους και τελικά η μορφή που έχουν στην εγχώρια αγορά. Μελετάται επίσης ο τρόπος που κατανέμονται στη χώρα μας οι εντολές για την παραγωγή των απαιτούμενων ηλεκτρικών φορτίων από το αρμόδιο όργανο, το διαχειριστή του ηλεκτρικού δικτύου στους εκάστοτε παραγωγούς και η προοπτική μοντελοποίησης του συνόλου της αγοράς ως παίγνιο. Στο τρίτο κεφάλαιο περιγράφεται ο τρόπος που μια απελευθερωμένη αγορά ηλεκτρικής ενέργειας μπορεί να μοντελοποιηθεί ως ένα παίγνιο Cournot και διερευνώνται οι τρεις πιθανοί τρόποι ανάληψης δράσης από το διαχειριστή του συστήματος, καθώς και οι συνέπειες κάθε μιας από αυτές, στο είδος της ισορροπίας που τελικά μπορεί να επιτευχθεί. Στο τέταρτο και τελευταίο κεφάλαιο γίνεται μια σύντομη αναφορά στο μοντέλο Stackelberg, που προτείνεται από τη διεθνή βιβλιογραφία στην περίπτωση αγορών ηλεκτρικής ενέργειας (όπως η ελληνική) με διακριτό το ρόλο του παίκτη ηγέτη.
description: The aim of the present dissertation is to present the fundamental concepts of game theory and research the potential of their implementation in a liberalized electric power market. More specifically, in the first introducing chapter we present a few basic concepts of game theory and amongst them the concept of equilibrium. Three types of equilibria are examined: Cournot, Nash and Stackelberg. In the second chapter the basic factors that consist a typical liberalized electric power market are discussed and additionally their role and the details of their function are analysed, especially for the domestic market. In the third chapter, a liberalized electric power market is modelled as a Cournot game and the feasible network operator's policies of action are investigated. The last chapter briefly describes the concept of Stackelberg equilibrium, frequently attempted in markets (like the greek) with discrete distinction between the two types of players, meaning the leaders and the followers.
New population synthesis approach:The golden path to constrain stellar andgalactic physics
Creators: name: Lagarde, Nadège
name: Reylé, Céline
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The cornerstone mission of the European Space Agency, Gaia, has revealed properties of 260 000 white dwarfs in the Galaxy, allowing us for the first time to constrain the evolution of white dwarfs with a large sample. Complementary surveys (CoRoT,Kepler, K2, APOGEE andGaia-ESO), will revolutionize our understanding of the formation and history of our Galaxy, providing accurate stellar masses, radii, ages, distances, and chemical properties for very large samples of stars across different Galactic stellar populations. To exploit the potential of the combination of spectroscopic, seismic and astrometric observations, the population synthesis approach is a very crucial and efficient tool. We develop the Besançon Galaxy model (BGM, Lagarde et al.2017) for which stellar evolution predictions are included, providing the global asteroseismic properties and the surface chemical abundances along the evolution of low- and intermediate-mass stars. For the first time, the BGM can explore the effects of an extra-mixing occurring in red-giant stars (Lagarde et al.2019), changing their stellar properties. The nextstep is to model a consistent treatment of giant stars and their remnants (e.g., white dwarfs).This kind of improvement would help us to constrain stellar and Galactic evolutions.
Ακριβής Μοντελοποίηση του Πολυωνυμικού-Εκθετικού Χώρου Λύσεων ενός Συστήματος
Creators: name: Καλεσιάκη, Όλγα Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Γραμμικά δυναμικά συστήματα
αναπαράσταση πυρήνα
MPUM
υπολογισμός MPUM
επαναληπτικοί αλγόριθμοι
Linear dynamical systems
kernel representation
computation of the MPUM
recursive algorithm

description: Η κύρια συμβολή αυτής της εργασίας είναι η λύση των πολυωνυμικών-εκθετικών χρονικών σειρών των προβλημάτων μοντελοποίησης. Θα επεξεργαστούμε αποκλειστικά τη μοντελοποίηση ακριβείας. Τα δεδομένα μας είναι εκθετικές-πολυωνυμικές χρονικές σειρές και το μοντέλο αποτελείται από γραμμικά χρονικά αναλλοίωτα και πεπερασμένης διάστασης συστήματα. Στο κεφάλαιο τρία μελετάται το εξής πρόβλημα: Γνωρίζοντας την συμπεριφορά του δυναμικού συστήματος, δηλαδή τον χώρο λύσεων αυτού, να βρεθεί το σύστημα των διαφορικών εξισώσεων (ή εξισώσεων διαφορών) το οποίο παράγει το χώρο λύσεων. Πιο συγκεκριμένα να βρεθούν οι αλγόριθμοι μοντελοποίησης.
description: The main contribution of this project is the solution of the polynomial-exponential time series modeling problem. We will exclusively treat exact modeling. The data are polynomial-exponential time series, and the model class consists of linear, continuous-time, time invariant, finite dimensional systems. Chapter three is about knowing the behavior of the dynamical system meaning the system’s solution space, trying to find out the system of differential equations (or difference equations) which generates the specific solution space. More particularly to find out the modeling algorithms.
Photoelectrochemical water splitting in separate oxygen and hydrogen cells
Creators: name: Landman, Avigail
name: Dotan, Hen
name: Shter, Gennady E.
name: Wullenkord, Michael
name: Houaijia, Anis
name: Maljusch, Artjom
name: Grader, Gideon S.
name: Rothschild, Avner
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Solar water splitting provides a promising path for sustainable hydrogen production and solar energy storage. One of the greatest challenges towards large-scale utilization of this technology is reducing the hydrogen production cost. The conventional electrolyzer architecture, where hydrogen and oxygen are co-produced in the same cell, gives rise to critical challenges in photoelectrochemical (PEC) water splitting cells that directly convert solar energy and water to hydrogen. Here we overcome these challenges by separating the hydrogen and oxygen cells. The ion exchange in our cells is mediated by auxiliary electrodes, and the cells are connected to each other only by metal wires, enabling centralized hydrogen production. We demonstrate hydrogen generation in separate cells with solar-to-hydrogen conversion efficiency of 7.5%, which can readily surpass 10% using standard commercial components. A basic cost comparison shows that our approach is competitive with conventional PEC systems, enabling safe and potentially affordable solar hydrogen production.
Kinetic description of fermion production in the oscillator representation
Creators: name: Pervushin, V. N.
name: Skokov, V. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the fermion creation in quantum kinetic theory by applying ``oscillator representation'' approach, which was earlier developed for bosonic systems. We show that in some particular cases (Yukawa-like interaction, fixed direction of external vector field) resulting Kinetic Equation (KE) reduces to KE obtained by time-dependent Bogoliubov transformation method. We conclude ``oscillator representation'' approach to be more universal for the derivation of quantum transport equations in strong space-homogeneous time-dependent fields. We discuss some possible applications of obtained KE to cosmology and particle production in strong laser fields.
description: 14 pages, 3 figures
Effect of Ga doping on magnetotransport properties in collosal magnetoresistive La0.7Ca0.3Mn1-xGaxO3 (0 < x < 0.1)
Creators: name: Pekala, Marek
name: Mucha, Jan
name: Vertruyen, Benedicte
name: Cloots, Rudi
name: Ausloos, Marcel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Samples of La0.7Ca0.3Mn1-xGaxO3 with x = 0, 0.025, 0.05 and 0.10 were prepared by standard solid-state reaction. They were first characterized chemically, including the microstructure. The magnetic properties and various transport properties, i.e. the electrical resistivity, magnetoresistivity (for a field below 8T), thermoelectric power and thermal conductivity measured each time on the same sample, are reported. The markedly different behavior of the x = 0.1 sample from those with a smaller Ga content, is discussed. The dilution of the Mn3+/Mn4+ interactions with Ga doping considerably reduces the ferromagnetic double exchange interaction within the manganese lattice leading to a decrease of the Curie temperature. The polaron binding energy varies from 224 to 243 meV with increased Ga doping.
description: submitted to J Magnet Magnet Mater; 13 figures; 2 tables; 38 references