cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Graph Representation Learning for Popularity Prediction Problem: A Survey
Creators: name: Chen, Tiantian
name: Guo, Jianxiong
name: Wu, Weili
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The online social platforms, like Twitter, Facebook, LinkedIn and WeChat, have grown really fast in last decade and have been one of the most effective platforms for people to communicate and share information with each other. Due to the "word of mouth" effects, information usually can spread rapidly on these social media platforms. Therefore, it is important to study the mechanisms driving the information diffusion and quantify the consequence of information spread. A lot of efforts have been focused on this problem to help us better understand and achieve higher performance in viral marketing and advertising. On the other hand, the development of neural networks has blossomed in the last few years, leading to a large number of graph representation learning (GRL) models. Compared to traditional models, GRL methods are often shown to be more effective. In this paper, we present a comprehensive review for existing works using GRL methods for popularity prediction problem, and categorize related literatures into two big classes, according to their mainly used model and techniques: embedding-based methods and deep learning methods. Deep learning method is further classified into six small classes: convolutional neural networks, graph convolutional networks, graph attention networks, graph neural networks, recurrent neural networks, and reinforcement learning. We compare the performance of these different models and discuss their strengths and limitations. Finally, we outline the challenges and future chances for popularity prediction problem.
description: 30 pages, 4 figures
The first passage event for sums of dependent Lévy processes with applications to insurance risk
Creators: name: Eder, Irmingard
name: Klüppelberg, Claudia
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: Risk Management (q-fin.RM)
subject: FOS: Mathematics
subject: FOS: Economics and business
subject: 60G51 (Primary), 60G50, 60J75, 91B30 (Secondary)

description: For the sum process $X=X^1+X^2$ of a bivariate Lévy process $(X^1,X^2)$ with possibly dependent components, we derive a quintuple law describing the first upwards passage event of $X$ over a fixed barrier, caused by a jump, by the joint distribution of five quantities: the time relative to the time of the previous maximum, the time of the previous maximum, the overshoot, the undershoot and the undershoot of the previous maximum. The dependence between the jumps of $X^1$ and $X^2$ is modeled by a Lévy copula. We calculate these quantities for some examples, where we pay particular attention to the influence of the dependence structure. We apply our findings to the ruin event of an insurance risk process.
description: Published in at http://dx.doi.org/10.1214/09-AAP601 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The communication of foreign products in China through the store: an empirical analysis
Creators: name: Checchinato, Francesca
name: Hu, Lala
name: Vescovi, Tiziano
Publisher: name: International Journal of Economic Behavior
Year: 2013

description: In China foreign brands are faced with brand origin confusion, which creates benefits for local brands. Therefore, marketers should provide information related to the COO by using not only products and promotions, but also distribution. In particular, stores could be an important starting point to communicate the brand origin and image, as they represent evidence of the brand world and a powerful setting for storytelling. In order to analyse how the COO has been used by foreign (Italian) brands in the Chinese market, we examined 45 points of sale in China to check whether Italy is somehow recalled in their hard elements or during the shopping experience by using the mystery shopping research technique. The results highlight a relatively traditional, marginal, and iconic use of the COO in a market that is new, important, and highly dynamic. Some managerial implications will be discussed Classification-JEL: H12 Keywords: Country of origin; Store image; Retail; Mystery shopping; China; Foreign brands; Italy.
description: International Journal of Economic Behavior, Vol 3, No 1 (2013): International Journal of Economic Behavior
Additional file 2: of Comparative proteomic investigation of drought responses in foxtail millet
Creators: name: Pan, Jiaowen
name: Li, Zhen
name: Wang, Qingguo
name: Garrell, Anna
name: Liu, Min
name: Guan, Yanan
name: Zhou, Wenqing
name: Liu, Wei
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Table S1. Oligonucleotide primers used in qRT-PCR in this study. (DOC 98 kb)
Combinatorial geometries of field extensions
Creators: name: Gismatullin, Jakub
Publisher: name: arXiv
Year: 2009
Subjects: subject: Logic (math.LO)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 03C98; 51D20; 12F20; 05B35

description: We classify the algebraic combinatorial geometries of arbitrary field extensions of transcendence degree greater than 4 and describe their groups of automorphisms. Our results and proofs extend similar results and proofs by Evans and Hrushovski in the case of algebraically closed fields. The classification of projective planes in algebraic combinatorial geometries in arbitrary fields of characteristic zero will also be given.
description: 11 pages, 1 figure
Magnetic and Electrical Properties of Ordered 112-type Perovskite LnBaCoMnO5+δ(Ln = Nd, Eu)
Creators: name: Kundu, Asish K.
name: Pralong, V.
name: Raveau, B.
name: Caignaert, V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Investigation of the oxygen-deficient 112-type ordered oxides of the type LnBaCoMnO5+δ(Ln = Nd, Eu) evidences certain unusual magnetic behavior at low temperatures, compared to the LnBaCo2O5+δcobaltites. One observes that the substitution of manganese for cobalt suppresses the ferromagnetic state and induces strong antiferromagnetic interactions. Importantly, NdBaCoMnO5.9 depicts a clear paramagnetic to antiferromagnetic type transition around 220 K, whereas for EuBaCoMnO5.7 one observes an unusual magnetic behavior below 177 K which consists of ferromagnetic regions embedded in an antiferromagnetic matrix. The existence of two sorts of crystallographic sites for Co/Mn and their mixed valence states favor the ferromagnetic interaction whereas antiferromagnetism originates from the Co3+-O-Co3+ and Mn4+-O-Mn4+ interactions. Unlike the parent compounds, the present Mn-substituted phases do not exhibit prominent magnetoresistance effects in the temperature range 75-400K.
description: 23 pages including figures
A Self-Tuning Impedance-based Interaction Planner for Robotic Haptic Exploration
Creators: name: Kato, Yasuhiro
name: Balatti, Pietro
name: Gandarias, Juan M.
name: Leonori, Mattia
name: Tsuji, Toshiaki
name: Ajoudani, Arash
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper presents a novel interaction planning method that exploits impedance tuning techniques in response to environmental uncertainties and unpredictable conditions using haptic information only. The proposed algorithm plans the robot's trajectory based on the haptic interaction with the environment and adapts planning strategies as needed. Two approaches are considered: Exploration and Bouncing strategies. The Exploration strategy takes the actual motion of the robot into account in planning, while the Bouncing strategy exploits the forces and the motion vector of the robot. Moreover, self-tuning impedance is performed according to the planned trajectory to ensure compliant contact and low contact forces. In order to show the performance of the proposed methodology, two experiments with a torque-controller robotic arm are carried out. The first considers a maze exploration without obstacles, whereas the second includes obstacles. The proposed method performance is analyzed and compared against previously proposed solutions in both cases. Experimental results demonstrate that: i) the robot can successfully plan its trajectory autonomously in the most feasible direction according to the interaction with the environment, and ii) a compliant interaction with an unknown environment despite the uncertainties is achieved. Finally, a scalability demonstration is carried out to show the potential of the proposed method under multiple scenarios.
description: 8 pages, 9 figures, accepted for IEEE Robotics and Automation Letters (RA-L) and IEEE/RSJ International Conference on Intelligent Robots and Systems 2022
Exploring the Factors Influencing the Intention to Use Self-Service Technologies: An Eastern European Perspective
Creators: name: Mincu, Laurentiu
name: Gruber, Thorsten
Publisher: name: International Journal of Economic Behavior
Year: 2013

description: Despite decades of research on self-service technology (SST), there are still only limited numbers of studies conducted in emerging markets (Ostrom et al., 2010). In order to help close this surprising gap in the literature, two studies were conducted in an emerging Eastern European country: an exploratory investigation with 20 in-depth semi-structured interviews and a quantitative survey research involving 139 respondents.The research outcomes reveal similarities, but also differences among the factors which influence SSTs usage by Eastern European and Western consumers, respectively. Antecedents such as complexity, previous experience with SSTs, perceived risk, relative advantage and technology readiness were found to be strongly related to the intention of using these devices, thus confirming previous findings. However, in contrast to previous discoveries, the attitude towards the past, individualism, masculinity, rational and experiential thinking, were found to have only weak connections with the behavioural intention. The research provides valuable theoretical contributions to the scarce literature available on SST usage in emerging markets. Classification-JEL: H12 Keywords: self-service technologies; emerging markets; Romania; online shopping; ATMs; SST use model.
description: International Journal of Economic Behavior, Vol 3, No 1 (2013): International Journal of Economic Behavior
Fano-Kondo interplay in a side-coupled double quantum dot
Creators: name: Sasaki, S.
name: Tamura, H.
name: Akazaki, T.
name: Fujisawa, T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate low-temperature transport characteristics of a side-coupled double quantum dot where only one of the dots is directly connected to the leads. We observe Fano resonances, which arise from interference between discrete levels in one dot and the Kondo effect, or cotunneling in general, in the other dot, playing the role of a continuum. The Kondo resonance is partially suppressed by destructive Fano interference, reflecting novel Fano-Kondo competition. We also present a theoretical calculation based on the tight-binding model with slave boson mean field approximation, which qualitatively reproduces the experimental findings.
description: 4 pages, 4 figures
Coordination and Collaboration: How do Volunteer Moderators Work as a Team in Live Streaming Communities?
Creators: name: Cai, Jie
name: Wohn, Donghee Yvette
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Volunteer moderators (mods) play significant roles in developing moderation standards and dealing with harmful content in their micro-communities. However, little work explores how volunteer mods work as a team. In line with prior work about understanding volunteer moderation, we interview 40 volunteer mods on Twitch - a leading live streaming platform. We identify how mods collaborate on tasks (off-streaming coordination and preparation, in-stream real-time collaboration, and relationship building both off-stream and in-stream to reinforce collaboration) and how mods contribute to moderation standards (collaboratively working on the community rulebook and individually shaping community norms). We uncover how volunteer mods work as an effective team. We also discuss how the affordances of multi-modal communication and informality of volunteer moderation contribute to task collaboration, standards development, and mod's roles and responsibilities.
description: Accepted at CHI 2022
Dark energy with time-dependent equation of state
Creators: name: Gorbunova, O. G.
name: Timoshkin, A. V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The accelerating Friedmann flat universe, filled with an ideal fluid with a linear (oscillating) inhomogeneous equation of state (EoS) depending on time, is reviewed. The equations of motions are solved. It is shown that in some cases there appears a quasi-periodic universe, which repeats the cycles of phantom-type space acceleration.
description: Dedicated to the 70th anniversary of Professor Iver Brevik
Real time plasma equilibrium reconstruction in a Tokamak
Creators: name: Blum, Jacques
name: Boulbe, Cédric
name: Faugeras, Blaise
Publisher: name: arXiv
Year: 2009
Subjects: subject: Numerical Analysis (math.NA)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The problem of equilibrium of a plasma in a Tokamak is a free boundary problemdescribed by the Grad-Shafranov equation in axisymmetric configurations. The right hand side of this equation is a non linear source, which represents the toroidal component of the plasma current density. This paper deals with the real time identification of this non linear source from experimental measurements. The proposed method is based on a fixed point algorithm, a finite element resolution, a reduced basis method and a least-square optimization formulation.
Factors driving consumer attitude and purchase intention towards hunting firearms
Creators: name: Pencarelli, Tonino
name: Francioni, Barbara
name: Gabbianelli, Linda
Publisher: name: International Journal of Economic Behavior
Year: 2013

description: The objectives of the paper are twofold: the first one is to identify the critical variables that influence the process of buying firearms according to the opinion of Italian hunters and retailers. The second objective is to try to identify hunters’ groups with similar generic characteristics and similar behavior in purchasing a firearm for the purpose of understanding customers’ behavior. In order to achieve the first objective we have interviewed 455 Italian hunters and 200 firearms retailers from May to September 2011. Results show that according to hunters the main factors influencing firearm purchases are manageability of the firearms and competence of the retailer; while according to retailers the key purchasing factors are price of the firearms and the image of the producer. The survey reveals that, in spite of these different perceptions, retailers know their customers’ behavior and preferences fairly well. However, the study also suggests that firearms retailers under valuate the weight of the functional characteristics of the product and the hunters’ competences and autonomy in decision-making during the purchasing process. In order to achieve the second objective of the study, we perform a segmentation through a cluster analysis and results reveal that there are six main hunter groups named the recommended, the conservative, the innovative, the informed, the stingy and the maniac. The Italian firearms producers could evaluate whether their current competitive strategy is exploiting these potential market spaces. Keywords: Consumer behaviour; sporting firearms sector; Italian hunters and firearms retailers.
description: International Journal of Economic Behavior, Vol 3, No 1 (2013): International Journal of Economic Behavior
Quantum compiling with a variational instruction set for accurate and fast quantum computing
Creators: name: Lu, Ying
name: Zhou, Peng-Fei
name: Fei, Shao-Ming
name: Ran, Shi-Ju
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The quantum instruction set (QIS) is defined as the quantum gates that are physically realizable by controlling the qubits in quantum hardware. Compiling quantum circuits into the product of the gates in a properly defined QIS is a fundamental step in quantum computing. We here propose the quantum variational instruction set (QuVIS) formed by flexibly designed multi-qubit gates for higher speed and accuracy of quantum computing. The controlling of qubits for realizing the gates in a QuVIS is variationally achieved using the fine-grained time optimization algorithm. Significant reductions in both the error accumulation and time cost are demonstrated in realizing the swaps of multiple qubits and quantum Fourier transformations, compared with the compiling by a standard QIS such as the quantum microinstruction set (QuMIS, formed by several one- and two-qubit gates including one-qubit rotations and controlled-NOT gates). With the same requirement on quantum hardware, the time cost for QuVIS is reduced to less than one half of that for QuMIS. Simultaneously, the error is suppressed algebraically as the depth of the compiled circuit is reduced. As a general compiling approach with high flexibility and efficiency, QuVIS can be defined for different quantum circuits and be adapted to the quantum hardware with different interactions.
description: Main text: 8 pages, 5 figures + Supplemental material
Field Theory of the RNA Freezing Transition
Creators: name: David, Francois
name: Wiese, Kay Joerg
Publisher: name: arXiv
Year: 2009
Subjects: subject: Biomolecules (q-bio.BM)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Folding of RNA is subject to a competition between entropy, relevant at high temperatures, and the random, or random looking, sequence, determining the low- temperature phase. It is known from numerical simulations that for random as well as biological sequences, high- and low-temperature phases are different, e.g. the exponent rho describing the pairing probability between two bases is rho = 3/2 in the high-temperature phase, and approximatively 4/3 in the low-temperature (glass) phase. Here, we present, for random sequences, a field theory of the phase transition separating high- and low-temperature phases. We establish the existence of the latter by showing that the underlying theory is renormalizable to all orders in perturbation theory. We test this result via an explicit 2-loop calculation, which yields rho approximatively 1.36 at the transition, as well as diverse other critical exponents, including the response to an applied external force (denaturation transition).
description: 96 pages, 188 figures. v2: minor corrections
Social web communication and CRM in the marketing strategies of wine enterprises
Creators: name: Iazzi, Antonio
name: Trio, Oronzo
name: Fait, Monica
name: Iaia, Lea
Publisher: name: International Journal of Economic Behavior
Year: 2013

description: The aim of the paper is to observe and analyse the contributions made by social media in redefining firm-client relations in the wine sector as a support for CRM systems. After a literature review, in order to define the theoretical framework, the research will provide two stages of analysis: the first step concerns an investigation of buyers aimed at gathering information about their degree of usage of social media for interacting with customers as well as the spread of content and critical issues; the second step investigates the content and characteristics of Web 2.0 communication for detecting social media best practices in the use of wine blogs and the social networking site Facebook. The originality and managerial usefulness of this paper consists of studying the emerging trends in the use of Web 2.0 tools in the wine sector, identifying the main purchase determinants that lead the choice process of consumers and developing new guidelines for the effective implementation of the instruments observed. This will help companies to better manage the social media communication tools called sCRM applications as well as their related marketing strategies, according to the companies’ mission and goals. Keywords: social customer relationship management (sCRM); social media communication; wine sector
description: International Journal of Economic Behavior, Vol 3, No 1 (2013): International Journal of Economic Behavior
Broadening AI Ethics Narratives: An Indic Art View
Creators: name: Divakaran, Ajay
name: Sridhar, Aparna
name: Srinivasan, Ramya
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Incorporating interdisciplinary perspectives is seen as an essential step towards enhancing artificial intelligence (AI) ethics. In this regard, the field of arts is perceived to play a key role in elucidating diverse historical and cultural narratives, serving as a bridge across research communities. Most of the works that examine the interplay between the field of arts and AI ethics concern digital artworks, largely exploring the potential of computational tools in being able to surface biases in AI systems. In this paper, we investigate a complementary direction--that of uncovering the unique socio-cultural perspectives embedded in human-made art, which in turn, can be valuable in expanding the horizon of AI ethics. Through semi-structured interviews across sixteen artists, art scholars, and researchers of diverse Indian art forms like music, sculpture, painting, floor drawings, dance, etc., we explore how {\it non-Western} ethical abstractions, methods of learning, and participatory practices observed in Indian arts, one of the most ancient yet perpetual and influential art traditions, can shed light on aspects related to ethical AI systems. Through a case study concerning the Indian dance system (i.e. the {\it `Natyashastra'}), we analyze potential pathways towards enhancing ethics in AI systems. Insights from our study outline the need for (1) incorporating empathy in ethical AI algorithms, (2) integrating multimodal data formats for ethical AI system design and development, (3) viewing AI ethics as a dynamic, diverse, cumulative, and shared process rather than as a static, self-contained framework to facilitate adaptability without annihilation of values (4) consistent life-long learning to enhance AI accountability
Vortex shedding from a microsphere oscillating in superfluid ^4He at mK temperatures and from a laser beam moving in a Bose-Einstein condensate
Creators: name: Schoepe, Wilfried
Publisher: name: arXiv
Year: 2022
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Turbulent drag of an oscillating microsphere, that is levitating in superfluid $^4$He at mK temperatures, is unstable slightly above a critical velocity amplitude $v_c$. The lifetime $τ$ of the turbulent state is determined by the number $n$ of vortices shed per half-period. It is found that this number is identical to the superfluid Reynolds number. The possibility of moving a levitating sphere through superfluid $^3$He at microkelvin temperatures is considered. A laser beam moving through a Bose-Einstein condensate (BEC) (as observed by other authors) also produces vortices in the BEC. In particular, in either case a linear dependence of the shedding frequency $f_v$ on $Δv = v - v_c$ is observed, where $v$ is the velocity amplitude of the sphere or the constant velocity of the laser beam above $v_c$ for the onset of turbulent flow: $f_v = a Δv$, where the coefficient $a$ is proportional to the oscillation frequency $ ω$ above some characteristic frequency $ω_k$ and assumes a finite value for steady motion $ω\rightarrow 0$. A relation between the superfluid Reynolds number and the superfluid Strouhal number is presented that is different from classical turbulence.
description: 6 pages, 6 figures. arXiv admin note: text overlap with arXiv:1701.05733, 6 typos and 1 error corrected
Concurrence and Entanglement Entropy of Stochastic 1-Qubit Maps
Creators: name: Hellmund, Meik
name: Uhlmann, Armin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Explicit expressions for the concurrence of all positive and trace-preserving ("stochastic") 1-qubit maps are presented. We construct the relevant convex roof patterns by a new method. We conclude that two component optimal decompositions always exist. Our results can be transferred to 2xN-quantumsystems providing the concurrence for all rank two density operators as well as lower and upper bounds for their entanglement of formation. We apply these results to a study of the entanglement entropy of 1-qubit stochastic maps which preserve axial symmetry. Using analytic and numeric results we analyze the bifurcation patterns appearing in the convex roof of optimal decompositions and give results for the one-shot (Holevo-Schumacher-Westmoreland) capacity of those maps.
description: 24 pages, 9 figures
Effects of Waiting Time on Patient Satisfaction: Nigerian Hospitals Experience
Creators: name: Obamiro, John Kolade
Publisher: name: International Journal of Economic Behavior
Year: 2013

description: The time spent waiting for services at outpatient department couple with some factors of quality care are major determinants of patient satisfaction. This study examines the relationship between waiting time and patient satisfaction. Data was obtained through structured questionnaire distributed to a randomly selected 240 outpatients of the selected public and private health centres to ascertain their views as regards to waiting time and evaluation of level of satisfaction with service delivery. Data obtained were analysed using descriptive statistics. This study has shown that a good numbers of the patients were satisfied with the service delivery despite experiencing long waiting time. Though, lengthy waiting line is evident in the public hospital than the other private hospitals. But this does not affect patient perception of quality care offered because long waiting time is a general occurrence in Nigerian hospitals especially in publicly funded health centres. Efforts should be made by hospital administrators and medical personnel to eliminate unnecessary delay in service delivery and where unavoidable; the waiting time should be made productive. Also, emphasis should be directed toward training of medical personnel on ways to create patient-oriented services and deliver more efficient services. Keywords: Waiting Time; Healthcare Centre; Medical Personnel; Service Delivery; Quality care; Patient Satisfaction.
description: International Journal of Economic Behavior, Vol 3, No 1 (2013): International Journal of Economic Behavior
How should the server sleep? -- Age-energy tradeoff in sleep-wake server systems
Creators: name: Xu, Jin
name: Wu, Xinyuan
name: Huang, Qisheng
name: Sun, Peng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: Performance (cs.PF)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The surging demand for fresh information from various Internet of Things (IoT) applications requires oceans of data sampled from the physical environment to be transmitted and processed timely, which would lead to huge energy consumption. We investigate the sleep-wake strategies of servers in communication systems to reduce energy consumption while guaranteeing timely delivery of fresh information to users. Specifically, we investigate a multi-source single-server queueing system and propose a novel sleep-wake strategy called the Conditional Sleep (CS) scheme. Our analysis reveals that the CS scheme outperforms the widely-used Hysteresis Time (HT) and Bernoulli Sleep (BS) schemes in terms of Age of Information (AoI), while retaining the same energy consumption rate and Peak Age of Information (PAoI). We find that increasing the sleep period length leads to a reduction in energy consumption and an increase in PAoI, but it does not always increase AoI. Moreover, we show that using PAoI as the information freshness metric in designing sleep-wake strategies would make the server sleep infinitely long due to the PAoI being determined by first-order statistics. We further numerically show that having the bufferless system can achieve a better PAoI-energy tradeoff than the infinite buffer system when having a large sampling rate.
description: IEEE Transactions on Green Communications and Networking, 2023
Spinor model of a perfect fluid and their applications in Bianchi type-I and FRW models
Creators: name: Saha, Bijan
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Different characteristic of matter influencing the evolution of the Universe has been simulated by means of a nonlinear spinor field. Exploiting the spinor description of perfect fluid and dark energy evolution of the Universe given by an anisotropic Bianchi type-I (BI) or isotropic Friedmann-Robertson-Walker (FRW) one has been studied.
description: 10 pages, 8 Figures
Gate-Voltage Control of Chemical Potential and Weak Anti-localization in Bismuth Selenide
Creators: name: Chen, J.
name: Qin, H. J.
name: Yang, F.
name: Liu, J.
name: Guan, T.
name: Qu, F. M.
name: Zhang, G. H.
name: Shi, J. R.
name: Xie, X. C.
name: Yang, C. L.
name: Wu, K. H.
name: Li, Y. Q.
name: Lu, L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report that Bi$_2$Se$_3$ thin films can be epitaxially grown on SrTiO$_{3}$ substrates, which allow for very large tunablity in carrier density with a back-gate. The observed low field magnetoconductivity due to weak anti-localization (WAL) has a very weak gate-voltage dependence unless the electron density is reduced to very low values. Such a transition in WAL is correlated with unusual changes in longitudinal and Hall resistivities. Our results suggest much suppressed bulk conductivity at large negative gate-voltages and a possible role of surface states in the WAL phenomena. This work may pave a way for realizing three-dimensional topological insulators at ambient conditions.
description: 5 pages, 4 figures.
The role of web communication to enhance the value of retail trade in small cities
Creators: name: Cioppi, Marco
Publisher: name: International Journal of Economic Behavior
Year: 2013

description: The goal of this study is to analyze the ways in which websites are used in retail and the effectiveness of these methods. The study analyzed the websites of 200 different retail companies in the Italian province of Pesaro and Urbino. The following questions were asked: how do businesses use electronic communication to add value to their products, how effective is this communication, and what are the strengths and weaknesses of this type of communication. The analysis of these websites is based on a model that identifies specific variables relating to websites, which can influence communication efficacy at any phase of purchasing and consumption process. The results of the analysis were then compared with national figures regarding the use of the Internet by retail businesses, published by ISTAT (2009-2012). Keywords: web communication, retail trade, small firms, website analysis, web marketing.
description: International Journal of Economic Behavior, Vol 3, No 1 (2013): International Journal of Economic Behavior
Growth and characterization of thin epitaxial Co3O4(111) films
Creators: name: Vaz, C. A. F.
name: Henrich, V. E.
name: Ahn, C. H.
name: Altman, E. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The growth and characterization of epitaxial Co3O4(111) films grown by oxygen plasma-assisted molecular beam epitaxy on single crystalline a-Al2O3(0001) is reported. The Co3O4(111) grows single crystalline with the epitaxial relation Co3O4(111)[-12-1]||a-Al2O3(0001)[10-10], as determined from in situ electron diffraction. Film stoichiometry is confirmed by x-ray photoelectron spectroscopy, while ex situ x-ray diffraction measurements show that the Co3O4 films are fully relaxed. Post-growth annealing induces significant modifications in the film morphology, including a sharper Co3O4/a-Al2O3 interface and improved surface crystallinity, as shown by x-ray reflectometry, atomic force microscopy and electron diffraction measurements. Despite being polar, the surface of both as-grown and annealed Co3O4(111) films are (1 * 1), which can be explained in terms of inversion in the surface spinel structure.
description: 8 pages, 7 figures
Political and Economic Aspects in Education: an Analysis of Citizen Formation Process through Active Citizenship
Creators: name: Puka, Edi
name: Beshiri, Dilina
Publisher: name: International Journal of Economic Behavior
Year: 2013

description: The human being grows in relationship with others of its fellows, and it is by virtue of this relationship that it receives a particular cultural heritage and acquires its own identity, differentiating itself, finding its own space of freedom and autonomy allowing it to interact and extend its own network of relations. In such a dynamic of reciprocity, the man realizes himself as such as a conscious member of a “social body”, i.e. of a radical society in an organic human context, which has become nowadays a clearly planetary one, by virtue of the unpublished migration flows and obvious interdependence of the Planet. The education is a line of human civility and it causes that grounds of anonymity, fears, consumerism, prejudice, haste, indifference, abuse, insecurity, solitude, become grounds of hospitality, trust, sharing, security, friendship, and brotherhood. The patterns of political education having prevailed so far are: the academic model with its explanation and dissent in the abstract of a great deal of knowledge, and that of the laboratory, which tilts and leans over, even by moments of simulation, toward vital worlds of operational policy. It is now manifested a widespread social demand about the necessity to provide to everybody, but especially in the range of basic youth socio-political information, an equipment of historical and values’ nature, and by providing comparative elements on the different socio-political matrices and traditions, raising the incentive at a renewing and increasingly conscious commitment in the face of growing difficulties, inherent to the political perspectives disputed so far in the world. It is necessary to refocus and reestablish a political culture uniting the breath of the ideal with the reality of administrative experience, supporting this political culture with the contribution of a dynamic and open reflection, capable of understanding the reality. Keywords: Education; Policy; Citizenship; Culture; Emancipation Journal: International Journal of Economic Behavior
description: International Journal of Economic Behavior, Vol 3, No 1 (2013): International Journal of Economic Behavior
Reducing controls noise in gravitational wave detectors with interferometric local damping of suspended optics
Creators: name: van Dongen, J
name: Prokhorov, L
name: Cooper, S J
name: Barton, M A
name: Bonilla, E
name: Dooley, K L
name: Driggers, J C
name: Effler, A
name: Holland, N A
name: Huddart, A
name: Kasprzack, M
name: Kissel, J S
name: Lantz, B
name: Mitchell, A L
name: O'Dell, J
name: Pele, A
name: Robertson, C
name: Mow-Lowry, C M
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Control noise is a limiting factor in the low-frequency performance of the LIGO gravitational wave detectors. In this paper we model the effects of using new sensors called HoQIs to control the suspension resonances. We show if we were to use HoQIs, instead of the standard shadow sensors, we can suppress resonance peaks up to tenfold more while simultaneously reducing the noise injected by the damping system. Through a cascade of effects this will reduce the resonant cross-coupling, allow for improved stability for feed-forward control, and result in improved sensitivity of the detector in the 10-20 Hz band. This analysis shows that local sensors such as HoQIs should be used in current and future detectors to improve low-frequency performance.
description: RSI Accepted manuscript, 9 pages, 8 figures
Conditional limit theorems for regulated fractional Brownian motion
Creators: name: Awad, Hernan
name: Glynn, Peter
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K25 (Primary) 90B22, 68M20, 60F99 (Secondary)

description: We consider a stationary fluid queue with fractional Brownian motion input. Conditional on the workload at time zero being greater than a large value $b$, we provide the limiting distribution for the amount of time that the workload process spends above level $b$ over the busy cycle straddling the origin, as $b\to\infty$. Our results can be interpreted as showing that long delays occur in large clumps of size of order $b^{2-1/H}$. The conditional limit result involves a finer scaling of the queueing process than fluid analysis, thereby departing from previous related literature.
description: Published in at http://dx.doi.org/10.1214/09-AAP605 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Truncation errors and modified equations for the lattice Boltzmann method via the corresponding Finite Difference schemes
Creators: name: Bellotti, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Lattice Boltzmann schemes are efficient numerical methods to solve a broad range of problems under the form of conservation laws. However, they suffer from a chronic lack of clear theoretical foundations. In particular, the consistency analysis and the derivation of the modified equations are still open issues. This has prevented, until today, to have an analogous of the Lax equivalence theorem for Lattice Boltzmann schemes. We propose a rigorous consistency study and the derivation of the modified equations for any lattice Boltzmann scheme under acoustic and diffusive scalings. This is done by passing from a kinetic (lattice Boltzmann) to a macroscopic (Finite Difference) point of view at a fully discrete level in order to eliminate the non-conserved moments relaxing away from the equilibrium. We rewrite the lattice Boltzmann scheme as a multi-step Finite Difference scheme on the conserved variables, as introduced in our previous contribution. We then perform the usual analyses for Finite Difference by exploiting its precise characterization using matrices of Finite Difference operators. Though we present the derivation of the modified equations until second-order underacoustic scaling, we provide all the elements to extend it to higher orders, since the kinetic-macroscopic connection is conducted at the fully discrete level. Finally, we show that our strategy yields, in a more rigorous setting, the same results as previous works in the literature.
Hybrid-functional calculations with plane-wave basis sets: The effect of the singularity correction on total energies, energy eigenvalues, and defect energy levels
Creators: name: Broqvist, Peter
name: Alkauskas, Audrius
name: Pasquarello, Alfredo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: When described through a plane-wave basis set, the inclusion of exact nonlocal exchange in hybrid functionals gives rise to a singularity, which slows down the convergence with the density of sampled $k$ points in reciprocal space. In this work, we investigate to what extent the treatment of the singularity through the use of an auxiliary function is effective for $k$-point samplings of limited density, in comparison to analogous calculations performed with semilocal density functionals. Our analysis applies for instance to calculations in which the Brillouin zone is sampled at the sole $Γ$-point, as often occurs in the study of surfaces, interfaces, and defects or in molecular dynamics simulations.
Additional file 1 of Changing epidemiology of acute kidney injury in critically ill patients with COVID-19: a prospective cohort
Creators: name: Lumlertgul, Nuttha
name: Baker, Eleanor
name: Pearson, Emma
name: Dalrymple, Kathryn V.
name: Pan, Jacqueline
name: Jheeta, Anup
name: Weerapolchai, Kittisak
name: Wang, Yanzhong
name: Leach, Richard
name: Barrett, Nicholas A.
name: Ostermann, Marlies
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Marine Biology
subject: Science Policy
subject: Computational Biology

description: Additional file 1: Figure S1: Number of patients admitted to ICU, patients with acute kidney injury, and patients who received kidney replacement therapy by month of admission. Figure S2: Proportions of patients with acute kidney injury and patients who received kidney replacement therapy by month of admission. Table S1: Baseline characteristics, laboratory biomarkers, treatment and outcomes by wave, AKI status and AKI staging. Table S2: Unadjusted associations between demographic characteristics and diagnosis of acute kidney injury for all patients and stratified by wave. Table S3: Indications for KRT between wave 1 and 2. Table S4: Adjusted associations between demographic characteristics and kidney replacement therapy for all patients and stratified by wave. Table S5: Comparison of daily cumulative fluid balance (%) by waves and sources of admission. Table S6: Unadjusted associations between COVID-19 treatments and AKI or KRT for all patients and stratified by wave. Table S7: Treatment and fluid balance for AKI or KRT patients only, stratified by day of diagnosis or KRT and wave of the pandemic. Table S8: Changes in serum creatinine and GFR values in alive patients from baseline, hospital discharge, and 90 days after hospital discharge Table S9: Associations between AKI, KRT and 24-hour cumulative fluid balance.
Automatic Velocity Picking Using a Multi-Information Fusion Deep Semantic Segmentation Network
Creators: name: Wang, H. T.
name: Zhang, J. S.
name: Zhao, Z. X.
name: Zhang, C. X.
name: Li, L.
name: Yang, Z. Y.
name: Geng, W. F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Velocity picking, a critical step in seismic data processing, has been studied for decades. Although manual picking can produce accurate normal moveout (NMO) velocities from the velocity spectra of prestack gathers, it is time-consuming and becomes infeasible with the emergence of large amount of seismic data. Numerous automatic velocity picking methods have thus been developed. In recent years, deep learning (DL) methods have produced good results on the seismic data with medium and high signal-to-noise ratios (SNR). Unfortunately, it still lacks a picking method to automatically generate accurate velocities in the situations of low SNR. In this paper, we propose a multi-information fusion network (MIFN) to estimate stacking velocity from the fusion information of velocity spectra and stack gather segments (SGS). In particular, we transform the velocity picking problem into a semantic segmentation problem based on the velocity spectrum images. Meanwhile, the information provided by SGS is used as a prior in the network to assist segmentation. The experimental results on two field datasets show that the picking results of MIFN are stable and accurate for the scenarios with medium and high SNR, and it also performs well in low SNR scenarios.
Musical priming effects on food preference
Creators: name: Petrucci, Francesco
Publisher: name: International Journal of Economic Behavior
Year: 2013

description: How music can influence our pleasure for food? When we listen to the music, informations that arrives to the brain to be interpreted may recall, or prime, certain thoughts and feelings that have implications for our attitudes and behaviors. Could the thoughts primed by music influence what people actually perceive via another of the senses, in this case taste? Results of present experiment suggest that hearing a certain background music while eating some foodstuffs can increase arousing and pleasure in a manner consistent with intrinsic informational aspects of music. According to this it is possible to sentence that people's response may change toward product in a positive way if we match some music congruently with product perceived qualities. Marketers have long understood the importance of background music in enhancing consumer's experience satisfaction. The results are discussed in terms of their theoretical implications for research on music and consumer behavior, particularly there is a need to determine whether such effects might be determined by a cognitive response, an affective response or both. Keywords: music; consumer behavior; consumer psychology; musical priming; musical fit; consumer preferences.
description: International Journal of Economic Behavior, Vol 3, No 1 (2013): International Journal of Economic Behavior
Coherent States for PT-/Non-PT-Symmetric and Non-Hermitian Morse Potential via Path Integral Method
Creators: name: Kandirmaz, Nalan
name: Sever, Ramazan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the coherent states for PT-/non-PT-Symmetric and non-Hermitian generalized Morse Potential obtained by using path integral formalism over the holomorphic coordinates. We transform the action of generalized Morse potential into two harmonic oscillators with a new parametric time to establish the parametric time coherent states. We calculate the energy eigenvalues and the corresponding wave functions in parabolic coordinates.
description: 14 pages