cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Shaping the dust mass - star-formation rate relation
Creators: name: Hjorth, Jens
name: Gall, Christa
name: Michałowski, Michał J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: There is a remarkably tight relation between the observationally inferred dust masses and star-formation rates (SFRs) of SDSS galaxies, Mdust $\propto$ SFR$^{1.11}$ (Da Cunha et al. 2010). Here we extend the Mdust-SFR relation to the high end and show that it bends over at very large SFRs (i.e., dust masses are lower than predicted for a given SFR). We identify several distinct evolutionary processes in the diagram: (1) A star-bursting phase in which dust builds up rapidly at early times. The maximum attainable dust mass in this process is the cause of the bend-over of the relation. A high dust-formation efficiency, a bottom-light initial mass function, and negligible supernova shock dust destruction are required to produce sufficiently high dust masses. (2) A quiescent star-forming phase in which the subsequent parallel decline in dust mass and SFR gives rise to the Mdust-SFR relation, through astration and dust destruction. The dust-to-gas ratio is approximately constant along the relation. We show that the power-law slope of the Mdust-SFR relation is inversely proportional to the global Schmidt-Kennicutt law exponent (i.e., $\sim 0.9$) in simple chemical evolution models. (3) A quenching phase which causes star formation to drop while the dust mass stays roughly constant or drops proportionally. Combined with merging, these processes, as well as the range in total baryonic mass, give rise to a complex population of the diagram which adds significant scatter to the original Mdust-SFR relation. (4) At very high redshifts, a population of galaxies located significantly below the local relation is predicted.
description: 5 pages, 1 figure, ApJL, in press
Unsupervised Segmentation of Hyperspectral Remote Sensing Images with Superpixels
Creators: name: Barbato, Mirko Paolo
name: Napoletano, Paolo
name: Piccoli, Flavio
name: Schettini, Raimondo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, we propose an unsupervised method for hyperspectral remote sensing image segmentation. The method exploits the mean-shift clustering algorithm that takes as input a preliminary hyperspectral superpixels segmentation together with the spectral pixel information. The proposed method does not require the number of segmentation classes as input parameter, and it does not exploit any a-priori knowledge about the type of land-cover or land-use to be segmented (e.g. water, vegetation, building etc.). Experiments on Salinas, SalinasA, Pavia Center and Pavia University datasets are carried out. Performance are measured in terms of normalized mutual information, adjusted Rand index and F1-score. Results demonstrate the validity of the proposed method in comparison with the state of the art.
description: 23 pages, 15 figures, 12 tables
The stability of a graph partition: A dynamics-based framework for community detection
Creators: name: Delvenne, Jean-Charles
name: Schaub, Michael T.
name: Yaliraki, Sophia N.
name: Barahona, Mauricio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Recent years have seen a surge of interest in the analysis of complex networks, facilitated by the availability of relational data and the increasingly powerful computational resources that can be employed for their analysis. Naturally, the study of real-world systems leads to highly complex networks and a current challenge is to extract intelligible, simplified descriptions from the network in terms of relevant subgraphs, which can provide insight into the structure and function of the overall system. Sparked by seminal work by Newman and Girvan, an interesting line of research has been devoted to investigating modular community structure in networks, revitalising the classic problem of graph partitioning. However, modular or community structure in networks has notoriously evaded rigorous definition. The most accepted notion of community is perhaps that of a group of elements which exhibit a stronger level of interaction within themselves than with the elements outside the community. This concept has resulted in a plethora of computational methods and heuristics for community detection. Nevertheless a firm theoretical understanding of most of these methods, in terms of how they operate and what they are supposed to detect, is still lacking to date. Here, we will develop a dynamical perspective towards community detection enabling us to define a measure named the stability of a graph partition. It will be shown that a number of previously ad-hoc defined heuristics for community detection can be seen as particular cases of our method providing us with a dynamic reinterpretation of those measures. Our dynamics-based approach thus serves as a unifying framework to gain a deeper understanding of different aspects and problems associated with community detection and allows us to propose new dynamically-inspired criteria for community structure.
description: 3 figures; published as book chapter
The National Outstanding Organization Award (OOA), the National Certificate of Honor, Peking, China. (Siming Zheng)_for HKU
Creators: name: Siming Zheng
Publisher: name: figshare
Year: 2020
Subjects: subject: 150311 Organisational Behaviour
subject: FOS: Economics and business

description: Regarding this National Outstanding Organization Award, Certificates of Honor:I was on behalf of my Guangzhou University, South China Institute of Software Engineering and awarded by the first award with second prize of "National Honor of Certificate" on Jun 3, 2013. All the awarding activities were held in China Digital Science and Technology Museum (CDSTM) of Peking City, China.
Awarding Bodies:1). China Association for Science and Technology, Peking, China2). Department of Science and Technology, Ministry of Education, Peking, China3). Ministry of Education of the People's Republic of China, Peking, China4). Communist Youth League of China, Peking, China
Basis of Award: Election and Nomination.
Thank you for your attention.

Applicant name: Siming Zheng
Written date: Nov 20th, 2020.

Best regards.
Clustering free-falling paper motion with complexity and entropy
Creators: name: Pessa, Arthur A. B.
name: Perc, Matjaz
name: Ribeiro, Haroldo V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Many simple natural phenomena are characterized by complex motion that appears random at first glance, but that often displays underlying patterns and behavior that can be clustered in groups. The movement of small pieces of paper falling through the air is one of these systems whose complete mathematical description seems unworkable. Understanding these types of motion thus demands automated experimentation capable of producing large datasets covering different behaviors -- a task that has become feasible only recently with advances in computer vision and machine learning methods. Here we use one of these datasets related to the motion of free-falling paper with different shapes to propose an information-theoretical approach that automatically clusters different types of behavior. We evaluate the permutation entropy and statistical complexity from time series related to the observable area of free-falling paper pieces captured by a video camera. We find that chaotic and tumbling motions have a distinct average degree of entropy and complexity, allowing us to accurately discriminate between these two types of behavior with a simple unsupervised machine learning algorithm. Our method has a performance comparable to other approaches based on physical quantities but does not depend on reconstructing the three-dimensional falling trajectory.
description: 6 two-column pages, 1 figure, supplementary information; accepted for publication in EPL
Ubiquitous healthcare monitoring system using integrated triaxial accelerometer,spo2 and location sensors
Creators: name: Ogunduyile, O. O.
name: Zuva, K.
name: Randle, O. A.
name: Zuva, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: 14J26 (Secondary)

description: Ubiquitous healthcare has become one of the prominent areas of research inorder to address the challenges encountered in healthcare environment. In contribution to this area, this study developed a system prototype that recommends diagonostic services based on physiological data collected in real time from a distant patient. The prototype uses WBAN body sensors to be worn by the individual and an android smart phone as a personal server. Physiological data is collected and uploaded to a Medical Health Server (MHS) via GPRS/internet to be analysed. Our implemented prototype monitors the activity, location and physiological data such as SpO2 and Heart Rate (HR) of the elderly and patients in rehabilitation. The uploaded information can be accessed in real time by medical practitioners through a web application.
description: 13 pages, 6 figures, International Journal of UbiComp (IJU), Vol.4, No.2
Time Travel: Foreword
Creators: name: Varzi, Achille C.
Publisher: name: Columbia University
Year: 2005
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Metaphysics
subject: Logic

description: Might we some day be in a position to move about in time, just as we can already move about in space? Today, few would question that deliberate change in temporal location is logically possible. On the face of it, whether time travel is a genuine possibility appears to depend on a host of tricky matters. And this is just the beginning. Many other worries arise concerning, for instance, the metaphysics of personal identity, the philosophy of action, the nature of moral responsibility, or even the logic and semantics of ordinary language. (How does tense work in the mouth of a time traveler?) Some may be inclined to think that physics, not metaphysics, should provide the appropriate setting for addressing such worries, but this is wishful thinking. Surely time travel is possible, if this amounts to declaring its compatibility with the laws of fundamental physics. Gödel’s solutions to Einstein’s field equations, for example, uncover a family of rotating universes in which one can freely move about in spacetime without exceeding the speed of light. And surely such  universes are possible worlds in a thick sense—they cohere with the laws of logic and of physics. But is our world one of them? Are they ways our world could be, in a sense of ‘could’ that coheres equally well with our philosophy? In the end of the day, physical possibility may well be a subspecies of metaphysical possibility, but the drawing of metaphysical morals from current physical theories is no straightforward business.
Validating the Copernicus European Regional Reanalysis (CERRA) dataset for human-biometeorological applications
Creators: name: Galanaki, Elissavet
name: Giannaros, Christos
name: Agathangelidis, Ilias
name: Cartalis, Constantinos
name: Kotroni, Vassiliki
name: Lagouvardos, Konstantinos
name: Matzarakis, Andreas
Publisher: name: Zenodo
Year: 2023
Subjects: human-biometeorology
climate reanalysis
CERRA
human health
environmental epidemiology

description: This poster was presented at the 2023 International Conference on Meteorology, Climatology and Atmospheric Physics in Athens, Greece (25-29 September). It describes the first comprehensive evaluation of the most recent pan-European regional reanalysis, namely the Copernicus European Regional Reanalysis (CERRA) dataset at 5.5 km spatial resolution, in terms of simulating the observed human bioclimate, as expressed by the modified physiologically equivalent temperature (mPET), and its meteorological drivers. This work was conducted in the frames of the HEAT-ALARM ("Development of a heat-health warning system in Greece") research project. 
The relevant full paper is available at: 
Galanaki, E.; Giannaros, C.; Agathangelidis, I.; Cartalis, C.; Kotroni, V.; Lagouvardos, K.; Matzarakis, A. Validating the Copernicus European Regional Reanalysis (CERRA) Dataset for Human-Biometeorological Applications. Environ. Sci. Proc. 2023, 26, 111. https://doi.org/10.3390/environsciproc2023026111
A singularly perturbed Dirichlet problem for the Poisson equation in a periodically perforated domain. A functional analytic approach
Creators: name: Musolino, Paolo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J25, 31B10, 45A05, 47H30

description: Let $Ω$ be a sufficiently regular bounded open connected subset of $\mathbb{R}^n$ such that $0 \in Ω$ and that $\mathbb{R}^n \setminus \mathrm{cl}Ω$ is connected. Then we take $(q_{11},\dots, q_{nn})\in ]0,+\infty[^n$ and $p \in Q\equiv \prod_{j=1}^{n}]0,q_{jj}[$. If $ε$ is a small positive number, then we define the periodically perforated domain $\mathbb{S}[Ω_{p,ε}]^{-} \equiv \mathbb{R}^n\setminus \cup_{z \in \mathbb{Z}^n}\mathrm{cl}\bigl(p+εΩ+\sum_{j=1}^n (q_{jj}z_j)e_j\bigr)$, where $\{e_1,\dots,e_n\}$ is the canonical basis of $\mathbb{R}^n$. For $ε$ small and positive, we introduce a particular Dirichlet problem for the Poisson equation in the set $\mathbb{S}[Ω_{p,ε}]^{-}$. Namely, we consider a Dirichlet condition on the boundary of the set $p+εΩ$, together with a periodicity condition. Then we show real analytic continuation properties of the solution as a function of $ε$, of the Dirichlet datum on $p+ε\partial Ω$, and of the Poisson datum, around a degenerate triple with $ε=0$.
description: arXiv admin note: substantial text overlap with arXiv:1306.6674
Neural Network Optimal Feedback Control with Guaranteed Local Stability
Creators: name: Nakamura-Zimmerer, Tenavi
name: Gong, Qi
name: Kang, Wei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Recent research shows that supervised learning can be an effective tool for designing near-optimal feedback controllers for high-dimensional nonlinear dynamic systems. But the behavior of neural network controllers is still not well understood. In particular, some neural networks with high test accuracy can fail to even locally stabilize the dynamic system. To address this challenge we propose several novel neural network architectures, which we show guarantee local asymptotic stability while retaining the approximation capacity to learn the optimal feedback policy semi-globally. The proposed architectures are compared against standard neural network feedback controllers through numerical simulations of two high-dimensional nonlinear optimal control problems: stabilization of an unstable Burgers-type partial differential equation, and altitude and course tracking for an unmanned aerial vehicle. The simulations demonstrate that standard neural networks can fail to stabilize the dynamics even when trained well, while the proposed architectures are always at least locally stabilizing and can achieve near-optimal performance.
description: arXiv admin note: text overlap with arXiv:2109.07466
A Comparism of the Performance of Supervised and Unsupervised Machine Learning Techniques in evolving Awale/Mancala/Ayo Game Player
Creators: name: Randle, O. A.
name: Ogunduyile, O. O.
name: Zuva, T.
name: Fashola, N. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Awale games have become widely recognized across the world, for their innovative strategies and techniques which were used in evolving the agents (player) and have produced interesting results under various conditions. This paper will compare the results of the two major machine learning techniques by reviewing their performance when using minimax, endgame database, a combination of both techniques or other techniques, and will determine which are the best techniques.
description: 10 pages, 2 figures
Impact of the equation of state on $f$- and $p$- mode oscillations of neutron stars
Creators: name: Kunjipurayil, Athul
name: Zhao, Tianqi
name: Kumar, Bharat
name: Agrawal, Bijay K.
name: Prakash, Madappa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the impact of the neutron-star matter equation of state on the $f$- and $p_1$-mode oscillations of neutron stars obtained within the Cowling approximation and linearized general relativity. The $f$- and $p_1$-mode oscillation frequencies, and their damping times are calculated using representative sets of Skyrme Hartree-Fock and relativistic mean-field models, all of which reproduce nuclear systematics and support $2M_\odot$ neutron stars. Our study shows strong correlations between the frequencies of $f$- and $p_1$-modes and their damping times with the pressure of $β$-equilibrated matter at densities equal to or slightly higher than the nuclear saturation density $ρ_0$. Such correlations are found to be almost independent of the composition of the stars. The frequency of the $p_1$-mode of $1.4M_\odot$ star is strongly correlated with the slope of the symmetry energy $L_0$ and $β$-equilibrated pressure at density $ρ_0$. Compared to GR calculations, the error in the Cowling approximation for the $f$-mode is about 30\% for neutron stars of low mass, whereas it decreases with increasing mass. The accuracy of the $p_1$-mode is better than 15\% for neutron stars of maximum mass, and improves for lower masses and higher number of radial nodes.
description: Comments are welcome
Characteristics and Outcomes among Older HIV-Positive Adults Enrolled in HIV Programs in Four Sub-Saharan African Countries
Creators: name: Eduardo, Eduard
name: Lamb, Matthew R.
name: Kandula, Sasikiran
name: Howard, Andrea A.
name: Mugisha, Veronicah
name: Kimaga, Davies
name: Kilama, Bonita
name: El-Sadr, Wafaa Mahmoud
name: Elul, Batya O.
Publisher: name: Columbia University
Year: 2014
Subjects: Public health
Epidemiology

description: Limited information exists on adults ≥50 years receiving HIV care in sub-Saharan Africa.
Using routinely-collected longitudinal patient-level data among 391,111 adults ≥15 years enrolling in HIV care from January 2005–December 2010 and 184,689 initiating ART, we compared characteristics and outcomes between older (≥50 years) and younger adults at 199 clinics in Kenya, Mozambique, Rwanda, and Tanzania. We calculated proportions over time of newly enrolled and active adults receiving HIV care and initiating ART who were ≥50 years; cumulative incidence of loss to follow-up (LTF) and recorded death one year after enrollment and ART initiation, and CD4+ response following ART initiation.
From 2005–2010, the percentage of adults ≥50 years newly enrolled in HIV care remained stable at 10%, while the percentage of adults ≥50 years newly initiating ART (10% [2005]-12% [2010]), active in follow-up (10% [2005]-14% (2010]), and active on ART (10% [2005]-16% [2010]) significantly increased. One year after enrollment, older patients had significantly lower incidence of LTF (33.1% vs. 32.6%[40–49 years], 40.5%[25–39 years], and 56.3%[15–24 years]; p-value<0.0001), but significantly higher incidence of recorded death (6.0% vs. 5.0% [40–49 years], 4.1% [25–39 years], and 2.8% [15–24 years]; p-valve<0.0001). LTF was lower after vs. before ART initiation for all ages, with older adults experiencing less LTF than younger adults. Among 85,763 ART patients with baseline and follow-up CD4+ counts, adjusted average 12-month CD4+ response for older adults was 20.6 cells/mm3 lower than for adults 25–39 years of age (95% CI: 17.1–24.1).
The proportion of patients who are ≥50 years has increased over time and been driven by aging of the existing patient population. Older patients experienced less LTF, higher recorded mortality and less robust CD4+ response after ART initiation. Increased programmatic attention on older adults receiving HIV care in sub-Saharan Africa is warranted.
Polynomial Transformation Method for Non-Gaussian Noise Environment
Creators: name: Banoth, Jugalkishore K.
name: Sircar, Pradip
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistics Theory (math.ST)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Signal processing in non-Gaussian noise environment is addressed in this paper. For many real-life situations, the additive noise process present in the system is found to be dominantly non-Gaussian. The problem of detection and estimation of signals corrupted with non-Gaussian noise is difficult to track mathematically. In this paper, we present a novel approach for optimal detection and estimation of signals in non-Gaussian noise. It is demonstrated that preprocessing of data by the orthogonal polynomial approximation together with the minimum error-variance criterion converts an additive non-Gaussian noise process into an approximation-error process which is close to Gaussian. The Monte Carlo simulations are presented to test the Gaussian hypothesis based on the bicoherence of a sequence. The histogram test and the kurtosis test are carried out to verify the Gaussian hypothesis.
description: 4 pages
Essays on the Economics of Organized Crime and Networks
Creators: name: Accardo, Pasquale
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: This thesis contains four essays on the economics of organized crime and the empirical analysis of social networks. The first chapter provides a review of the recent economic literature on the impacts of organized crime on elections, and on public policies. Politicians indeed represent a major target for criminal organisations as they shape political decisions and policy implementation. The review discusses two central challenges characterising the literature, namely the measurement of organized crime and its potential endogeneity. The second chapter argues that higher electoral competition may reinforce the position of politically active criminal organizations, which can endorse politicians in exchange for favors. The paper formalizes this intuition and test it on Italian electoral data, using the 1991 electoral reform as an exogenous source of variation in electoral competition in one of the two branches of the Parliament. A series of triple-difference and differencein-differences estimates suggest that, after the reform, mafia-prone areas reported higher vote shares awarded to the party traditionally supported by criminal organizations and a larger dispersion of votes across candidates of the same party. The third chapter applies Network Analysis (NA) to study the interactions between criminal organisations and the wider society by analysing the connections between mafia members and the political, economic and social elites (e.g., politicians, public officials, policemen, entrepreneurs) in Sicily, the homeland of the Sicilian mafia. The analysis is based on a novel network dataset built by encoding information coming from the archive of the Italian Anti-mafia Commission, describing relationships of collusion and exchange of favours. So far, the application of NA has been limited to the relationships within criminal networks. This paper moves a step further as it also considers the interactions between mafia members and individuals belonging to the social, political and economic elites. The study analyses the “topological” role of mafia bosses, and shows that mafia bosses strategically position themselves in the social network as an interface between the criminal and the legitimate world. Finally, the fourth chapter studies peer effects in the consumption of cultural activities by exploiting a unique individual-level longitudinal dataset on daily museum visits made by cardholders in the metropolitan area of Turin, in Northern Italy, between 2012 and 2019. The underlying peers’ structure is represented by a network in which cardholders are connected on the basis of information about the exact time and location of their visits.
Online estimation of Hilbert-Schmidt operators and application to kernel reconstruction of neural fields
Creators: name: Brivadis, Lucas
name: Chaillet, Antoine
name: Auriol, Jean
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: An adaptive observer is designed for online estimation of Hilbert-Schmidt operators from online measurement of the state for some class of nonlinear infinite-dimensional dynamical systems. Convergence is ensured under detectability and persistency of excitation assumptions. The class of systems considered is motivated by an application to kernel reconstruction of neural fields, commonly used to model spatiotemporal activity of neuronal populations. Numerical simulations confirm the relevance of the approach.
title: Meliboeus Pastor Emeritus; 1767
title: Drama Pastoritio-Musicum Deductum dum Plurimum Reverendus, Religiosissimus ac Clarissim. D. Eusebius Amort Collegij Pollingani p. t. Decanus Meritissimus Jubilaei Sacerdotij Sui Memoriam ad aram Solemniter ageret Die 10. Mensis Maij. Anno 1767
titleType: Subtitle
Creators: name: Amort, Eusebius
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2008

description: Manuskript
Investigation of indoor localization with ambient FM radio stations
Creators: name: Popleteev, Andrei
name: Osmani, Venet
name: Mayora, Oscar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Localization plays an essential role in many ubiquitous computing applications. While the outdoor location-aware services based on GPS are becoming increasingly popular, their proliferation to indoor environments is limited due to the lack of widely available indoor localization systems. The de-facto standard for indoor positioning is based on Wi-Fi and while other localization alternatives exist, they either require expensive hardware or provide a low accuracy. This paper presents an investigation into localization system that leverages signals of broadcasting FM radio stations. The FM stations provide a worldwide coverage, while FM tuners are readily available in many mobile devices. The experimental results show that FM radio can be used for indoor localization, while providing longer battery life than Wi-Fi, making FM an alternative to consider for positioning.
description: 10th IEEE Pervasive Computing and Communication conference, PerCom 2012, pp. 171 - 179
Cache Discovery Policies of MANET
Creators: name: Salem, Amer O. Abu
name: Alhmiedat, Tareq
name: Samara, Ghassan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In situations where establishing a network infrastructure is impossible, Ad-hoc networks are considered particularly important. Most of the previous research in Ad-hoc networks concentrated on the development and enhancement of dynamic routing protocols, which could efficiently discover routes between two communicating nodes. Although routing strategies is an important topic in MANETs, other topics such as data access are also crucial since the final goal of using Ad-hoc networks is to provide data access to mobile nodes. One of the most attractive techniques used to improve the data access performance in MANET environment is cooperative caching; which means multiple caching nodes share and cooperatively manage the cached contents. It is lead the research to important questions, what data should be cached, where, when, and how? A cooperative caching addressed into two basic issues: cache discovery and cache management, in other words, how to find requested data efficiently and how to manage an individual cache to improve the overall capacity of a cooperated cache. In this paper we have made a review of the existing cache discovery algorithms to address four stages after application request and before server response, using an historical file to record the previous data requests, and proposed cluster architecture with data cluster head election to store efficient information for future use and reducing the cost of flooding. In addition, this paper suggests some alternative techniques for cache discovery. Finally, the paper concludes with a discussion on future research directions.
description: 9 pages
Stochastic Approach to Determining the Mass Standard Based on the Fixed Values of Fundamental Physical Constants
Creators: name: Batanov-Gaukhman, Mikhail
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: It is shown that the inert properties of a stationary random process can be expressed in terms of the ratio of its correlation interval to the doubled variance. When using a fixed value of the Planck constant h as a proportionality factor, this ratio can be used as an equivalent of a mass standard. It is proposed to use thermal noise as a reference Gaussian stationary random process. The theoretical justification of the project of creating Thermal superconducting ampere balance for measuring the energy mass of an object is also given
description: 23 pages, 7 figure
Approximate Bayesian Probabilistic-Data-Association-Aided Iterative Detection for MIMO Systems Using Arbitrary M-ary Modulation
Creators: name: Yang, Shaoshi
name: Wang, Li
name: Lv, Tiejun
name: Hanzo, Lajos
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, the issue of designing an iterative-detection-and-decoding (IDD)-aided receiver, relying on the low-complexity probabilistic data association (PDA) method, is addressed for turbo-coded multiple-input-multiple-output (MIMO) systems using general M-ary modulations. We demonstrate that the classic candidate-search-aided bit-based extrinsic log-likelihood ratio (LLR) calculation method is not applicable to the family of PDA-based detectors. Additionally, we reveal that, in contrast to the interpretation in the existing literature, the output symbol probabilities of existing PDA algorithms are not the true a posteriori probabilities (APPs) but, rather, the normalized symbol likelihoods. Therefore, the classic relationship, where the extrinsic LLRs are given by subtracting the a priori LLRs from the a posteriori LLRs, does not hold for the existing PDA-based detectors. Motivated by these revelations, we conceive a new approximate Bayesian-theorem-based logarithmic-domain PDA (AB-Log-PDA) method and unveil the technique of calculating bit-based extrinsic LLRs for the AB-Log-PDA, which facilitates the employment of the AB-Log-PDA in a simplified IDD receiver structure. Additionally, we demonstrate that we may dispense with inner iterations within the AB-Log-PDA in the context of IDD receivers. Our complexity analysis and numerical results recorded for Nakagami-m fading channels demonstrate that the proposed AB-Log-PDA-based IDD scheme is capable of achieving a performance comparable with that of the optimal maximum a posteriori (MAP)-detector-based IDD receiver, while imposing significantly lower computational complexity in the scenarios considered.
description: 13 pages, 14 figures, 1 table, published in IEEE Transactions on Vehicular Technology, vol. 62, no. 3, pp. 1228-1240, March, 2013
Copy of Raw data.xlsx
Creators: name: Ribeiro-Oliveira, Antonio
name: Heaney, Alice
name: Oliveira, Rafael W R De
name: Bizzi, Mariana
name: Correa, Ricardo
name: Pereira, Monica Corso
name: Suelem Mol
name: Soares, Beatriz Santana
name: McKenna, Stephen
Publisher: name: figshare
Year: 2020
Subjects: Health Care

description: De-identified patient-reported-outcomes raw data coming from NHP questionnaires.
DEVELOPMENT OF AN INTERVENTION MODULE TO IMPROVE THE PERCEPTUAL ACCURACY OF ATHLETES WITH INTELLECTUAL DEVELOPMENTAL DISABILITIES
Creators: name: Dr. Payel Dey Ghosh
name: Divyani Khurana
Publisher: name: Zenodo
Year: 2023
Subjects: Intellectual Developmental Disability, Athletes, Perceptual accuracy, Sustained attention, Intervention.

description: Abstract
Accurate perception is a very important skill in any sport, as it reduces errors in performance and enhances performance. Individuals can have accurate perceptions only after paying proper attention to the stimulus for some period. Thus, making sustained attention another important skill required in sports. Research shows that individuals with Intellectual Developmental Disabilities have impairment in both perceptual accuracy and sustained attention. Therefore, the present study aims to develop an intervention that can improve sustained attention thus in turn enhancing the perceptual accuracy of athletes with Intellectual Developmental Disabilities. In the present study, 10 individuals with mild intellectual deficits were selected as a sample. Participants' perceptual accuracy was measured in pre and post-test situations using the Benton Visual Retention Test (BVRT) and intervention was provided in between the test sessions. Two activities were used as intervention- Boundary and tear paste activities. The duration of the intervention was 4 weeks (total of 8 sessions). The result revealed that there was an increase in the mean score in the post-test condition but the difference between pre and post-test mean was not statistically significant. However, an analysis of pictures drawn by the participants in both conditions as well as session-wise analysis revealed some improvement in both sustained attention and perceptual accuracy. Therefore, the study concludes that long-term interventions can improve the perceptual accuracy of athletes with Intellectual Developmental Disabilities.
Stability of relativistic Bondi accretion in Schwarzschild-(anti-)de Sitter spacetimes
Creators: name: Mach, Patryk
name: Malec, Edward
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In a recent paper we investigated stationary, relativistic Bondi-type accretion in Schwarzschild-(anti-)de Sitter spacetimes. Here we study their stability, using the method developed by Moncrief. The analysis applies to perturbations satisfying the potential flow condition. We prove that global isothermal flows in Schwarzschild-anti-de Sitter spacetimes are stable, assuming the test-fluid approximation. Isothermal flows in Schwarzschild-de Sitter geometries and polytropic flows in Schwarzschild-de Sitter and Schwarzschild-anti-de Sitter spacetimes can be stable, under suitable boundary conditions.
description: 6 pages
A mean-field model for nematic alignment of self-propelled rods
Creators: name: Perepelitsa, Misha
name: Timofeyev, Ilya
name: Murphy, Patrick
name: Igoshin, Oleg A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: In this paper we develop a model for nematic alignment of self-propelled rods interacting through binary collisions. We avoid phenomenological descriptions of rod interaction in favor of rigorously using a set of microscopic-level rules. Under the assumption that each collision results in a small change to a rod's orientation, we derive the Fokker-Planck equation for the evolution of the kinetic density function. Using analytical and numerical methods, we study the emergence of the nematic order from a homogeneous, uniform steady-state of the mean-field equation.
description: https://journals.aps.org/pre/abstract/10.1103/PhysRevE.106.034613
Musil’s Imaginary Bridge
Creators: name: Varzi, Achille C.
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Logic

description: In a calculation involving imaginary numbers, we begin with real numbers that represent concrete measures and we end up with numbers that are equally real, but in the course of the operation we find ourselves walking “as if on a bridge that stands on no piles”. How is that possible? How does that work? And what is involved in the as-if stance that this metaphor introduces so beautifully? These are questions that bother Törless deeply. And that Törless is bothered by such questions is a central question for any reader of Törless. Here I offer my interpretation, along with a reconstruction of the philosophical intuition that lies behind it all.
Quae in hoc codice continentur. Oratio Fvnebris In Depositione Gloriosis. Imp. Caes. Maximiliani Aug. pij. foelicis in oppido Vuelss Austriae Praesentibus ... per Ioannem Fabrum Augustanu[m] Theologu[m] ... habita Anno christi. M.D.XVIIII. Die XVI. Ianuarii; 1519
Creators: name: Faber, Johannes
name: Maximilian, I., Heiliges Römisches Reich, Kaiser I., Heiliges Römisches Reich, Kaiser
name: Sauermann, Georg
name: Gillis, Pierre
name: Spiegel, Jakob
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2010

description: Beigef.: Sauermann, Georg: Ad Carolumn Hispaniarum regem post obitum avi oratio. Augsburg, 6. Aug. 1519. - Gillis, Pierre: Threnodia seu lamentatio in obitum Maximiliani Caesaris. - Weitere VD16 Nummern: VD16 S 1896, VD16 A 315. - Signaturformel: a-h4, aa-dd4,ee6, Aa-Cc4. - Bl. h4r datiert 26. Juli 1519; Bl. ee6r datiert 6. August 1519. - Holzschnitte und Titeleinf. vom Petrarcameister (Musper, Petrarcameister, Nr. 42, 43, 624, 626)
Radiation Reaction Effects in Cascade Scattering of Intense, Tightly Focused Laser Pulses by Relativistic Electrons
Creators: name: Zhidkov, A.
name: Masuda, S.
name: Bulanov, S. S.
name: Hosokai, T.
name: Koga, J.
name: Kodama, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Non-linear cascade scattering of intense, tightly focused laser pulses by relativistic electrons is studied numerically in the classical approximation including the radiation damping for the quantum parameter hwx-ray/E<1 and an arbitrary radiation parameter Kai. The electron energy loss, along with its side scattering by the ponderomotive force, makes the scattering in the vicinity of high laser field nearly impossible at high electron energies. The use of a second, co-propagating laser pulse as a booster is shown to solve this problem.
Publishing reproducible results supported by FAIR data
Creators: name: Nieva de la Hidalga, Abraham
Publisher: name: Zenodo
Year: 2023
Subjects: Jupyter Notebooks
Scientific Workflows
Metadata generator
FAIR Data Objects
Galaxy Workflows
Publishing Research Data

description: We discuss two techniques for processing and analysing data that at the same time generate the required metadata to create FAIR digital objects. These objects can then be published as supporting information for the results obtained. This approach requires minimum intervention from the researcher performing the processing and analysis tasks. Consequently, these methods are ideal for improving the practices of publishing data, facilitate reproducibility of results, and support greater reuse of published data.
Both techniques produce the metadata required for reproducing the results, including data used, parameters set at each stage, sequence of operations and mapping between inputs and outputs. The use of these type of tools reduces the work for documenting supporting data, enables comparison of results when varying parameters, and supports exploratory testing of different parameter combinations. 
description: Poster presented during the Annual Digital Catalysis & Catalysis-Related Sciences Conference 2023 (ADCR 2023)
2 - 3 November 2023
DECHEMA House, Frankfurt, Germany
Limitations to Genuine Measurements in Ontological Models of Quantum Mechanics
Creators: name: Tumulka, Roderich
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Given an ontological model of a quantum system, a "genuine measurement," as opposed to a quantum measurement, means an experiment that determines the value of a beable, i.e., of a variable that, according to the model, has an actual value in nature before the experiment. We prove a theorem showing that in every ontological model, it is impossible to measure all beables. Put differently, there is no experiment that would reliably determine the ontic state. This result shows that the positivistic idea that a physical theory should only involve observable quantities is too optimistic.
description: 7 pages LaTeX, no figures; v2 has more detailed explanations
Suzaku study of gas properties along filaments of A2744
Creators: name: Ibaraki, Y.
name: Ota, N.
name: Akamatsu, H.
name: Zhang, Y. -Y.
name: Finoguenov, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Context: We present the results of Suzaku observations of a massive galaxy cluster A2744, which is an active merger at $z=0.308$. Aims: By using long X-ray observations of A2744, we aim to understand the growth of the cluster and the gas heating process through mass accretion along the surrounding filaments. Methods: We analyzed data from two-pointed Suzaku observations of A2744 to derive the temperature distribution out to the virial radius in three different directions. We also performed a deprojection analysis to study radial profiles of gas temperature, density, and entropy and compared the X-ray results with multi-wavelength data to investigate correlations with the surface density of galaxies and with radio relics. Results: The gas temperature was measured out to the virial radius $r_{200}$ in the north-east region and to about $1.5r_{200}$ in the north-west and south regions. The radial profile of the gas temperature is rather flat and the temperature is very high (even near $r_{200}$); it is comparable to the mean temperature of this cluster ($kT=9$ keV). These characteristics have not been reported in any other cluster. We find a hint of temperature jump in the northeast region whose location coincides with a large radio relic, indicating that the cluster experienced gas heating because of merger or mass accretion onto the main cluster. The temperature distribution is anisotropic and shows no clear positive correlation with the galaxy density, which suggests an inhomogeneous mass structure and a complex merger history in A2744.
description: 8 pages, 8 figures, A&A accepted
Efficient allocation of heterogeneous response times in information spreading process
Creators: name: Cui, Ai-Xiang
name: Wang, Wei
name: Tang, Ming
name: Fu, Yan
name: Liang, Xiaoming
name: Do, Younghae
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Recently, the impacts of spatiotemporal heterogeneities of human activities on spreading dynamics have attracted extensive attention. In this paper, to study heterogeneous response times on information spreading, we focus on the susceptible-infected spreading dynamics with adjustable power-law response time distribution based on uncorrelated scale-free networks. We find that the stronger the heterogeneity of response times is, the faster the information spreading is in the early and middle stages. Following a given heterogeneity, the procedure of reducing the correlation between the response times and degrees of individuals can also accelerate the spreading dynamics in the early and middle stages. However, the dynamics in the late stage is slightly more complicated, and there is an optimal value of the full prevalence time changing with the heterogeneity of response times and the response time-degree correlation, respectively. The optimal phenomena results from the efficient allocation of heterogeneous response times.
description: 8 pages, 6 figures
Revisiting the Promise of Kelly v. Goldberg in the Era of Welfare Reform. Georgetown Journal on Poverty Law and Policy.
Creators: name: Lens, Vicki A.
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Social service
subject: Law
subject: FOS: Law

description: Over forty years ago, the Supreme Court in Kelly v. Goldberg held that due process protections applied to statutorily provided welfare benefits. Since then, the welfare system has undergone massive changes, and has been transformed from a cash assistance program to a work-based temporary one, with participants required to work in exchange for benefits. One of the few vestiges of the old system preserved in the new is the requirement that participants be given an opportunity for an administrative fair hearing when benefits are reduced or denied. Although virtually all of the states have retained their pre-welfare reform fair hearing systems, we know little about whether, or how, these systems have adapted to the new demands wrought by welfare reform, including how useful such hearings are under a regime that emphasizes the denial of, rather than an entitlement to, assistance. This article reports on the first empirical study of fair hearings using a method of social science analyses called focused ethnography. The findings reveal that the current system works unevenly. Some administrative law judges act as “super bureaucrats” adopting the normative practices of the welfare system, including its focus on procedural compliance over substantive need, while other judges fully employ the tools of the adversarial system to decide disputes, thus acting as a check on agency error. However, even their efforts fall short in scrutinizing potential deficiencies in administrative systems and decision-making processes regarding the work rules and sanctions. A restructuring of the fair hearing system is required to enhance the efficacy of hearings post welfare reform, and to better serve its intended users. Specifically the present adversarial model should be replaced with the inquisitorial model, thus granting ALJs wider powers to define and investigate disputes. Additionally, the role of the agency representative should be redefined from agency advocate to a “friend of the court” responsible for seeking out opposing evidence and legal arguments. The proposed changes would allow for a fuller and fairer vetting of the types of disputes generated by a work based welfare system, and the administrative practices underlying them. It would also harness the skills, resources and knowledge of government officials in ways that would remedy appellants’ deficiencies in these areas.