cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Motivation Model of Peer Assessment in Programming Language Learning
Creators: name: Wang, Yanqing
name: Liang, Yaowen
name: Liu, Luning
name: Liu, Ying
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: K.3.1

description: Peer assessment is an efficient and effective learning assessment method that has been used widely in diverse fields in higher education. Despite its many benefits, a fundamental problem in peer assessment is that participants lack the motivation to assess others' work faithfully and fairly. Non-consensus is a common challenge that makes the reliability of peer assessment a primary concern in practices. This research proposes a motivation model that uses review deviation and radicalization to identify non-consensus in peer assessment. The proposed model is implemented as a software module in a peer code review system called EduPCR4. EduPCR4 is able to monitor this measure and trigger teacher's arbitration when it detects possible non-consensus. An empirical study conducted in a university-level C programming course showed that the proposed model and its implementation helped to improve the peer assessment practices in many aspects.
description: 12 pages, 2 figures, 3 tables
Effects of Forest and Tree Products on Poverty and Income Distribution in Rural Areas of Delta State, Nigeria
Creators: name: Nwandu, Peter Ifeanyichukwu
name: Nwandu, Peter Ifeanyichukwu
Publisher: name: Unknown
Year: 2012
Subjects: Community/Rural/Urban Development
Crop Production/Industries

description: PhD thesis submitted to the Department of Agricultural Economics, Faculty of Agriculture, University of Nigeria, Nsukka in partial fulfillment of requirements for the award of Doctor of Philosophy (PH.D.) in Agricultural Economics. Supervisors: Professor E.C. Eboh and Professor E.C. Okorji.
The Smooth MgII gas distribution through the interstellar/extra-planar/halo interface
Creators: name: Kacprzak, Glenn G.
name: Cooke, Jeff
name: Churchill, Christopher W.
name: Ryan-Weber, Emma V.
name: Nielsen, Nikole M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the first measurements of MgII absorption systems associated with spectroscopically confirmed z~0.1 star-forming galaxies at projected distances of D<6kpc. We demonstrate the data are consistent with the well known anti-correlation between rest-frame MgII equivalent width, Wr(2796), and impact parameter, D, represented by a single log-linear relation derived by Nielsen et al. (MAGIICAT) that converges to ~2A at D=0kpc. Incorporating MAGIICAT, we find that the halo gas covering fraction is unity below D~25kpc. We also report that our D<6kpc absorbers are consistent with the Wr(2796) distributions of the Milky Way interstellar medium (ISM) and ISM+halo. In addition, quasar sight-lines of intermediate redshift galaxies with 6
description: 6 pages, 3 figures, accepted 26/09/2013 for publication in ApJL
Rooted Clusters for Graph LP Algebras
Creators: name: Banaian, Esther
name: Chepuri, Sunita
name: Kelley, Elizabeth
name: Zhang, Sylvester W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 13F60, 05E99

description: LP algebras, introduced by Lam and Pylyavskyy, are a generalization of cluster algebras. These algebras are known to have the Laurent phenomenon, but positivity remains conjectural. Graph LP algebras are finite LP algebras encoded by a graph. For the graph LP algebra defined by a tree, we define a family of clusters called rooted clusters. We prove positivity for these clusters by giving explicit formulas for each cluster variable. We also give a combinatorial interpretation for these expansions using a generalization of $T$-paths.
Computer-Assisted Instruction in the Teaching and Learning of History: A Systematic Review in Africa
Creators: name: NANA OSEI BONSU
name: Brandford Bervell
Publisher: name: figshare
Year: 2020
Subjects: subject: 130306 Educational Technology and Computing
subject: FOS: Educational sciences
subject: Education

description: More than a decade has passed since the introduction of computer-assisted instruction (CAI) within schools in Africa. Computer-assisted instruction has enhanced teaching and learning at all levels of education in Africa. However, many aspects of the issues facing CAI implementation, as well as its effects on students’ performance in the history classroom are unclear. This necessitated the systematic review into two aspects. Firstly, the effects of CAI on students’ performance in the teaching and learning of history in Africa, and secondly, the various challenges facing CAI’s implementation in Africa. Furthermore, to facilitate future research, the researchers summarised several research methodologies used in the studies reviewed. The results from a systematic review of 11 studies revealed that CAI has a positive effect on students’ academic performance in history. The challenges to CAI implementation that were identified included: a lack of funding, training of teachers, and of motivation on the part of teachers; inadequate technological infrastructure; a lack of Internet; an unstable power supply; a lack of technological support; the poor information communication technology (ICT) skills of history and social studies teachers; a lack of school-based policies; and a digital divide between male and female students. Moreover, a quantitative approach was the preferred design with both descriptive and inferential statistics as the main statistical tools used for the data analysis. Additionally, there is a scarcity in research studies that employ an experimental design to test for the effect of CAI upon academic performance in history teaching. Lastly, the studies that use a questionnaire tool for data analysis can take a progressive step further by conducting structural equation modelling, which is an advanced quantitative analysis.
Negative magnetostrictive magnetoelectric coupling of BiFeO3
Creators: name: Lee, Sanghyun
name: Fernandez-Diaz, M. T.
name: Kimura, H.
name: Noda, Y.
name: Adroja, D. T.
name: Lee, Seongsu
name: Park, Junghwan
name: Kiryukhin, V.
name: Cheong, S-W.
name: Mostovoy, M.
name: Park, Je-Geun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: J.2
subject: 82D45

description: How the magnetoelectric coupling actually occurs on a microscopic level in multiferroic BiFeO3 is not well known. By using the high-resolution single crystal neutron diffraction techniques, we have determined the electric polarization of each individual elements of BiFeO3, and concluded that the magnetostrictive coupling suppresses the electric polarization at the Fe site below TN. This negative magnetoelectric coupling appears to outweigh the spin current contributions arising from the cycloid spin structure, which should produce a positive magnetoelectric coupling.
description: 10 pages, 4 figures, Accepted in Phys. Rev. B(Rapid Communications)
Computer Graphics in the Solution of the Chain Deformation Problem
Creators: name: Stellman, Steven D.
Publisher: name: Columbia University
Year: 1974
Subjects: subject: Microchemistry
subject: Polymers
subject: Mathematics
subject: FOS: Mathematics

description: Go and Scheraga have given a general solution for determining the possible conformations of a section of a flexible polymeric chain between two fixed bonds (if the bonds coincide, the problem is equivalent to ring closure). Often, the fixed bonds are related by symmetry, such as that imposed by helicity or folding of antiparallel chains. A technique is shown for obtaining solutions using interactive computer graphics, whereby a plausible chain conformation or fold is approximated manually and completed by mathematical minimization. The procedure allows rapid, repetitive exploration of multiple solutions, and has many options for changing constraints. As an example, the backbone conformation of GpC, a dinucleoside phosphate, is used as a starting model, and gives upon minimization a set of backbone angles in the range of 11-fold helical RNA.
Evidence of unconventional low-frequency dynamics in the normal phase of Ba(Fe1-xRhx)2As2 iron-based supercondutors
Creators: name: Bossoni, L.
name: Carretta, P.
name: Halperin, W. P.
name: Oh, S.
name: Reyes, A.
name: Kuhns, P.
name: Canfield, P. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: This work presents 75As NMR spin echo decay rate (1/T2) measurements in Ba(Fe1-xRhx)2As2 superconductors, for 0.041 < x < 0.094. It is shown that 1/T2 increases upon cooling, in the normal phase, suggesting the onset of an unconventional very low-frequency activated dynamic. The correlation times of the fluctuations and their energy barriers are derived. The motion is favored at large Rh content, while it is hindered by the application of a magnetic field perpendicular to the FeAs layers. The same dynamic is observed in the spin-lattice relaxation rate, in a quantitatively consistent manner. These results are discussed in the light of nematic fluctuations involving domain wall motion. The analogies with the behaviour observed in the cuprates are also outlined.
Physics discovery in nanoplasmonic systems via autonomous experiments in Scanning Transmission Electron Microscopy
Creators: name: Roccapriore, Kevin M.
name: Kalinin, Sergei V.
name: Ziatdinov, Maxim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Physics-driven discovery in an autonomous experiment has emerged as a dream application of machine learning in physical sciences. Here we develop and experimentally implement a deep kernel learning workflow combining the correlative prediction of the target functional response and its uncertainty from the structure, and physics-based selection of acquisition function, which autonomously guides the navigation of the image space. Compared to classical Bayesian optimization methods, this approach allows to capture the complex spatial features present in the images of realistic materials, and dynamically learn structure-property relationships. In combination with the flexible scalarizer function that allows to ascribe the degree of physical interest to predicted spectra, this enables physical discovery in automated experiment. Here, this approach is illustrated for nanoplasmonic studies of nanoparticles and experimentally implemented in a truly autonomous fashion for bulk- and edge plasmon discovery in MnPS3, a lesser-known beam-sensitive layered 2D material. This approach is universal, can be directly used as-is with any specimen, and is expected to be applicable to any probe-based microscopic techniques including other STEM modalities, Scanning Probe Microscopies, chemical, and optical imaging.
International Staff Exchange Week: an efficient and successful way to develop professionally
Creators: name: Heino, Tiina
name: Larmo, Katri
Publisher: name: Zenodo
Year: 2020
Subjects: medical and health libraries
International Staff Exchange Week:
professional development
networking

description: Modern libraries often face a positive problem: our colleagues abroad want to visit us, get ideas, benchmark our ways to work etc. How can we host visitors (takes time and work capacity) in a way which benefits also us? Since 2013, we have arranged an international staff exchange week at the Helsinki University Library. It is a week, when professionals get together to learn from peers, benchmark each other’s services, get new ideas and network. We can introduce our own services and make them better, from the feedback from our colleagues. This is one way to get our international community stronger!
Semi-supervised 3D Object Detection via Adaptive Pseudo-Labeling
Creators: name: Xu, Hongyi
name: Liu, Fengqi
name: Zhou, Qianyu
name: Hao, Jinkun
name: Cao, Zhijie
name: Feng, Zhengyang
name: Ma, Lizhuang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: 3D object detection is an important task in computer vision. Most existing methods require a large number of high-quality 3D annotations, which are expensive to collect. Especially for outdoor scenes, the problem becomes more severe due to the sparseness of the point cloud and the complexity of urban scenes. Semi-supervised learning is a promising technique to mitigate the data annotation issue. Inspired by this, we propose a novel semi-supervised framework based on pseudo-labeling for outdoor 3D object detection tasks. We design the Adaptive Class Confidence Selection module (ACCS) to generate high-quality pseudo-labels. Besides, we propose Holistic Point Cloud Augmentation (HPCA) for unlabeled data to improve robustness. Experiments on the KITTI benchmark demonstrate the effectiveness of our method.
description: Accepted at International Conference on Image Processing (ICIP 2021)
In the thick of it: metal-poor disc stars in RAVE
Creators: name: Kordopatis, G.
name: Gilmore, G.
name: Wyse, R. F. G.
name: Steinmetz, M.
name: Siebert, A.
name: Bienayme, O.
name: McMillan, P. J.
name: Minchev, I.
name: Zwitter, T.
name: Gibson, B. K.
name: Seabroke, G.
name: Grebel, E. K.
name: Bland-Hawthorn, J.
name: Boeche, C.
name: Freeman, K. C.
name: Munari, U.
name: Navarro, J. F.
name: Parker, Q.
name: Reid, W. A.
name: Siviero, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: By selecting in the RAVE-DR4 survey the stars located between 1 and 2 kpc above the Galactic plane, we question the consistency of the simplest three-component model (thin disc, thick disc, halo) for the Milky Way. We confirm that the metallicity and azimuthal velocity distribution functions of the thick disc are not Gaussian. In particular, we find that the thick disc has an extended metallicity tail going at least down to [M/H]=-2 dex, contributing roughly at 3% of the entire thick disc population and having a shorter scale-length compared to the canonical thick disc. The mean azimuthal velocity of these metal-poor stars allows us to estimate the correlation between the metallicity and the orbital velocity, which is an important constraint on the formation mechanisms of the Galactic thick disc. Given our simple approach, we find dVphi/d[M/H] ~ 50 km/s/dex, which is in a very good agreement with previous literature values. We complete the study with a brief discussion on the implications of the formation scenarios for the thick disc, and suggest that given the above mentioned characteristics, a thick disc mainly formed by radial migration mechanisms seems unlikely.
description: 17 pages, 18 figures, accepted for publication in MNRAS
Time delay estimation of traffic congestion propagation due to accidents based on statistical causality
Creators: name: Oh, YongKyung
name: Kwak, JiIn
name: Kim, Sungil
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The accurate estimation of time delays is crucial in traffic congestion analysis, as this information can be used to address fundamental questions regarding the origin and propagation of traffic congestion. However, the exact measurement of time delays during congestion remains a challenge owing to the complex propagation process between roads and high uncertainty regarding future behavior. To overcome this challenge, we propose a novel time delay estimation method for the propagation of traffic congestion due to accidents using lag-specific transfer entropy (TE). The proposed method adopts Markov bootstrap techniques to quantify uncertainty in the time delay estimator. To the best of our knowledge, our proposed method is the first to estimate time delays based on causal relationships between adjacent roads. We validated the method's efficacy using simulated data, as well as real user trajectory data obtained from a major GPS navigation system in South Korea.
description: http://www.aimspress.com/article/doi/10.3934/era.2023034
PIT: Position-Invariant Transform for Cross-FoV Domain Adaptation
Creators: name: Gu, Qiqi
name: Zhou, Qianyu
name: Xu, Minghao
name: Feng, Zhengyang
name: Cheng, Guangliang
name: Lu, Xuequan
name: Shi, Jianping
name: Ma, Lizhuang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Cross-domain object detection and semantic segmentation have witnessed impressive progress recently. Existing approaches mainly consider the domain shift resulting from external environments including the changes of background, illumination or weather, while distinct camera intrinsic parameters appear commonly in different domains, and their influence for domain adaptation has been very rarely explored. In this paper, we observe that the Field of View (FoV) gap induces noticeable instance appearance differences between the source and target domains. We further discover that the FoV gap between two domains impairs domain adaptation performance under both the FoV-increasing (source FoV < target FoV) and FoV-decreasing cases. Motivated by the observations, we propose the \textbf{Position-Invariant Transform} (PIT) to better align images in different domains. We also introduce a reverse PIT for mapping the transformed/aligned images back to the original image space and design a loss re-weighting strategy to accelerate the training process. Our method can be easily plugged into existing cross-domain detection/segmentation frameworks while bringing about negligible computational overhead. Extensive experiments demonstrate that our method can soundly boost the performance on both cross-domain object detection and segmentation for state-of-the-art techniques. Our code is available at https://github.com/sheepooo/PIT-Position-Invariant-Transform.
description: Accepted to ICCV 2021. Code is available at https://github.com/sheepooo/PIT-Position-Invariant-Transform
Paths to Persistence: An Analysis of Research on Program Effectiveness at Community Colleges
Creators: name: Bailey, Thomas R.
name: Alfonso, Mariana
Publisher: name: Columbia University
Year: 2005
Subjects: Community college students--Education
Community colleges

description: During the last decade, educators and policy-makers have increased their focus on the success of students once they enter community college. As a result, accreditation agencies and state regulators are increasingly scrutinizing measures of student outcomes such as persistence and completion rates. At the same time, national initiatives by foundations and the U.S. Department of Education are focused on developing policy and institutional practices that will improve success rates for community college students. This report has been written as part of the Achieving the Dream: Community Colleges Count initiative, which is based on the premise that research about and at community colleges must play a central role in any strategy to increase student success. This report presents a critical analysis of the state of the research on the effectiveness of four types of practices in increasing persistence and completion at community colleges: 1) advising, counseling, mentoring and orientation programs; 2) learning communities; 3) developmental education and other services for academically underprepared students; and 4) college-wide reform. We use this analysis to draw lessons about effective institutional practices, identify promising areas for future research, evaluate the state of program-effectiveness research at community colleges, and make recommendations for improving related research.
Bell-state generation for spin qubits via dissipative coupling
Creators: name: Zou, Ji
name: Zhang, Shu
name: Tserkovnyak, Yaroslav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the dynamics of two spin qubits interacting with a magnetic medium. A systematic formal framework for this qubit-magnet hybrid system is developed in terms of the steady-state properties of the magnetic medium. Focusing on the induced dissipative coupling between the spin qubits, we show how a sizable long-lived entanglement can be established via the magnetic environment, in the absence of any coherent coupling. Moreover, we demonstrate that maximally-entangled two-qubit states (Bell states) can be achieved in this scheme when complemented by proper postselection. In this situation, the time evolution of the entanglement is governed by a non-Hermitian Hamiltonian, where dynamical phases are separated by an exceptional point. The resultant Bell state is robust against weak random perturbations and does not require the preparation of a particular initial state. Our study may find applications in quantum information science, quantum spintronics, and for sensing of nonlocal quantum correlations.
description: 18 pages, 5 figures; PRB Letter Editors' Suggestion
State Systems of Performance Accountability for Community Colleges: Impacts and Lessons for Policymakers
Creators: name: Dougherty, Kevin J.
name: Hong, Esther
Publisher: name: Columbia University
Year: 2005
Subjects: Community college students--Education
Community colleges

description: This policy brief contains an analysis of the intended and unintended impacts of performance accountability on community colleges drawing on the experiences of 15 community colleges in six states in CCRC's National Field Study of Community Colleges.
The P-V Phase Transition of the FRW Universe
Creators: name: Kong, Shi-Bei
name: Abdusattar, Haximjan
name: Yin, Yihao
name: Zhang, Hongsheng
name: Hu, Ya-Peng
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We define thermodynamic pressure $P$ by work density $W$ as the conjugate quantity of thermodynamic volume $V$ from field equation. We derive the equations of state $P$=$P(V, T)$ for the Friedmann-Robertson-Walker (FRW) universe in Einstein gravity and a modified gravity respectively. We find that the equation of state from Einstein gravity shows no $P$-$V$ phase transition, while the equation of state from the modified gravity does, where the critical exponents are the same as those in mean field theory.
description: 11 pages, major revision, version published in EPJC
The command to proclaim the Lord's death 'until He comes' (1Cor 11:26) in light of the comparative grammatical analysis
Creators: name: Wojciech, Kosek
Publisher: name: Zenodo
Year: 2020
Subjects: Biblical studies, Biblical exegesis, Eucharist, Thanksgiving prayers after Holy Mass,, The interpretation of the first letters of Apostle Paul to Corinthians, 1Cor 11:26, Greek Grammar, Subjunctive mood

description: This paper is the translation of the article W. Kosek, Nakaz głoszenia śmierci Pana «aż przyjdzie» (1Kor 11,26) w świetle porównawczej analizy gramatycznej, in the book: W. Chrostowski (ed.), Jak śmierć potężna jest miłość. Księga pamiątkowa ku czci Księdza Profesora Juliana Warzechy SAC (1944-2009) [Love is as strong as death. A commemorative book in honor of Rev. Professor Julian Warzecha (1944-2009)], Warszawa-Ząbki 2009, p. 224-240. ISBN: 9788370317027 Abstract: This paper performs in-depth analyses of the grammatical structure of the sentence 1Cor 11:26 and compares it with structures of sentences belonging to one of two groups in the Bible: analogous and only seemingly analogous. In this way, by comparing the content of these two groups of biblical sentences, one finds a significant difference between this sentence’s understanding by contemporary biblicists and by St. Paul. These comparative analyses indicate that St. Paul had many grammatical possibilities to teach that in the time of mortality, while the Lord is still going to the Last Judgment, we should proclaim His death each time when we eat His Body and Blood. However, the apostle did not express this thought in 1Cor 11:26 – he used a grammatical structure that carries something more. Its right understanding enables believers to stay after each Eucharist on prayer traditionally called ‘thanksgiving’ and proclaim the death of Jesus until He as the Lord arrives at them and gives the Holy Spirit with His charismata. The original Polish text of this article is under the link:
 https://www.adoracja.bielsko.opoka.org.pl/biblistyka/1Kor11_26_dr_Wojciech_Kosek.html This article connects strictly with the other articles concerning The First Letter of St. Paul to Corinthians, namely: “Breaking of bread” in 1Cor 11:24 and breaking of Paschal Afikoman in “The Passover Haggadah” and “The Tractate Pesahim” - https://www.adoracja.bielsko.opoka.org.pl/praca_doktorska/KosekAfik2012_US.html Jesus as Anathema (1Cor 12:3) in light of Didache 16:5 in translation by A. Świderkówna - https://www.adoracja.bielsko.opoka.org.pl/praca_doktorska/1Kor12_3_dr_Wojciech_KosekMUS.html This article in English was first published on October 10, 2020, at Academia.edu: https://www.academia.edu/44268900/The_command_to_proclaim_the_Lord_s_death_until_He_comes_1Cor_11_26_in_light_of_alam_comparative_gram
 In the Html-version, it was published on October 10, 2020, on my website:
 https://www.adoracja.bielsko.opoka.org.pl/praca_doktorska/1Kor11_26_MUS.html
Building pathways to Success for Low-Skill Adult Students: Lessons for Community College Policy and Practice from a Statewide Longitudinal Tracking Study
Creators: name: Prince, David
name: Jenkins, Paul Davis
Publisher: name: Columbia University
Year: 2005
Subjects: Community college students--Education
Community colleges

description: This report is based on a first-of-its-kind study of the progress and outcomes of low-skill adults in community colleges. The study uses student record information from the Washington State Community and Technical College System to track two cohorts of adult students 25 or older with at most a high school education who entered one of the state's community or technical colleges for the first time in 1996-97 or 1997-98. The study examines the educational attainment of the students in both cohorts as well as their earnings five years after they enrolled. Key findings from this study are: Attending college for at least a year and earning a credential provides a substantial boost in earnings for adults who begin with a high school diploma or less. Short-term training, such as that often provided to welfare recipients, may help individuals get into the labor market, but does not seem to help them advance beyond low-paying jobs. Neither adult basic skills education by itself nor a limited number of college-level courses provides much benefit in terms of earnings. These findings, which are consistent with previous research, suggest that community and technical colleges ought to make taking at least one year of college-level courses and earning a certificate or other credential a minimum goal for all of the many low-skill adults they serve.
Energy-density-functional calculations including the proton-neutron mixing
Creators: name: Sato, Koichi
name: Dobaczewski, Jacek
name: Nakatsukasa, Takashi
name: Satuła, Wojciech
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present results of calculations based on the Skyrme energy density functional including the arbitrary mixing between protons and neutrons. In this framework, single-particle states are superpositions of proton and neutron components and the energy density functional is fully invariant with respect to three-dimensional rotations in the isospin space. The isospin of the system is controlled by means of the isocranking method, which carries over the standard cranking approach to the isospin space. We show numerical results of the isocranking calculations performed for isobaric analogue states in the A=14 and $A=40-56$ nuclei. We also present such results obtained for high-isospin states in $^{48}$Cr, with constraints on the isospin implemented by using the augmented Lagrange method.
description: 6 pages, 4 figures
Outsourcing of Instruction at Community Colleges
Creators: name: Bailey, Thomas R.
name: Jacobs, James
name: Jenkins, Paul Davis
Publisher: name: Columbia University
Year: 2004
Subjects: Community college students--Education
Community colleges

description: This report presents the findings of exploratory research designed to identify the characteristics of the outsourcing of instruction at community colleges and the forces that promote or block its spread. It is the second in a series of reports by the National Center for Postsecondary Improvement and the Community College Research Center on the relationship between for-profit higher education and community colleges. The outsourcing of instruction at community colleges to independent firms is a growing but still limited practice, and thus far it has been largely confined to non-credit courses. The “contracting out” of other services, such as food services, has been a longstanding and accepted way for colleges to meet some of their ancillary needs efficiently, but outsourcing instruction is quite controversial, and many factors determine its usefulness. Respondents interviewed for this study present several basic arguments against outsourcing instruction. The first is that it is inappropriate to mix the broad public goals of colleges with the incentives inherent in profit-making companies. Second, opponents assert that outsourcing instruction could undermine the tenure-based academic employment system. Third, they argue that the quality of the education provided by contractors may be lower, since contractors might compromise the quality of their services to meet their primary goal: making a profit. A corollary concern is that the courses provided by contractors are narrower and more limited in content than other college courses, and thus unworthy of being considered equal with those taught by college faculty. And, finally, those who believe that the independence of faculty is paramount are disturbed by the fact that outsourcing may result in a lack of control by faculty over course design, instructional materials, and choice of instructors. Supporters of outsourcing also present cogent reasons for their position. They assert that outsourcing can lead to a more efficient and higher quality education, the result of market forces that reward well-managed companies that sell superior products or services. They also claim that standardized pedagogy and curriculum materials produce predictable and consistent  quality. In addition—and of particular interest to community colleges, which operate under severe financial constraints—proponents cite evidence that outsourcing with a company to provide instructors is less costly for colleges than is hiring faculty, even adjuncts. Contractors can also supply instructors who have specialized and very up-to-date knowledge about course content because they are also working in the field, with the result that courses contain not only superior content but that they are tailored to meet students’ specific learning needs. Finally, through their industry contacts, contractors can help students find post-college employment.
The Mean Star-Forming Properties of QSO Host Galaxies
Creators: name: Rosario, D. J.
name: Trakhtenbrot, B.
name: Lutz, D.
name: Netzer, H.
name: Trump, J. R.
name: Silverman, J. D.
name: Schramm, M.
name: Lusso, E.
name: Berta, S.
name: Bongiorno, A.
name: Brusa, M.
name: Förster-Schreiber, N. M.
name: Genzel, R.
name: Lilly, S.
name: Magnelli, B.
name: Mainieri, V.
name: Maiolino, R.
name: Merloni, A.
name: Mignoli, M.
name: Nordon, R.
name: Popesso, P.
name: Salvato, M.
name: Santini, P.
name: Tacconi, L. J.
name: Zamorani, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Quasi-stellar objects (QSOs) occur in galaxies in which supermassive black holes (SMBHs) are growing substantially through rapid accretion of gas. Many popular models of the co-evolutionary growth of galaxies and SMBHs predict that QSOs are also sites of substantial recent star formation, mediated by important processes, such as major mergers, which rapidly transform the nature of galaxies. A detailed study of the star-forming properties of QSOs is a critical test of such models. We present a far-infrared Herschel/PACS study of the mean star formation rate (SFR) of a sample of spectroscopically observed QSOs to z~2 from the COSMOS extragalactic survey. This is the largest sample to date of moderately luminous AGNs studied using uniform, deep far-infrared photometry. We study trends of the mean SFR with redshift, black hole mass, nuclear bolometric luminosity and specific accretion rate (Eddington ratio). To minimize systematics, we have undertaken a uniform determination of SMBH properties, as well as an analysis of important selection effects within spectroscopic QSO samples that influence the interpretation of SFR trends. We find that the mean SFRs of these QSOs are consistent with those of normal massive star-forming galaxies with a fixed scaling between SMBH and galaxy mass at all redshifts. No strong enhancement in SFR is found even among the most rapidly accreting systems, at odds with several co-evolutionary models. Finally, we consider the qualitative effects on mean SFR trends from different assumptions about the star-forming properties of QSO hosts and redshift evolution of the SMBH-galaxy relationship. While limited currently by uncertainties, valuable constraints on AGN-galaxy co-evolution can emerge from our approach.
description: 10 figures, 1 table; accepted for publication in Astronomy & Astrophysics
Evaporating black holes and late-stage loss of soft hair
Creators: name: Cheng, Peng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a paradox for evaporating black holes, which is common in most schemes trying to avoid the firewall by decoupling early and late radiation. At the late stage of the black hole evaporation, the decoupling between early and late radiation can not be realized because the black hole has a very small coarse-grained entropy, then we are faced with the firewall again. We call the problem hair-loss paradox as a pun on losing black hole soft hair during the black hole evaporation and the situation that the information paradox has put so much pressure on researchers.
description: 5 pages, 2 figures
Gate-tunable nearly total terahertz absorption in graphene with resonant metal back reflector
Creators: name: Liu, Jiang-Tao
name: Liu, Nian-Hua
name: Wang, Li
name: Deng, Xin-Hua
name: Su, Fu-Hai
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The gate-tunable terahertz (THz) absorption of graphene layers with a resonant metal back reflector (RMBF) is theoretically investigated. We demonstrate that the THz absorption of graphene with RMBF can vary from nearly negligible to nearly total by tuning the external gate voltage. This peculiar nearly total THz absorption can be attributed to the Fabry-Perot cavity effect, which enhances the absorption and reduces the reflection of graphene. The absorption spectra of the graphene-RMBF structure can also be tailored in bandwidth and center frequency by changing the thickness and dielectric constant of the spacer layer.
description: 3 figures
Cross-Quality LFW: A Database for Analyzing Cross-Resolution Image Face Recognition in Unconstrained Environments
Creators: name: Knoche, Martin
name: Hörmann, Stefan
name: Rigoll, Gerhard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Real-world face recognition applications often deal with suboptimal image quality or resolution due to different capturing conditions such as various subject-to-camera distances, poor camera settings, or motion blur. This characteristic has an unignorable effect on performance. Recent cross-resolution face recognition approaches used simple, arbitrary, and unrealistic down- and up-scaling techniques to measure robustness against real-world edge-cases in image quality. Thus, we propose a new standardized benchmark dataset and evaluation protocol derived from the famous Labeled Faces in the Wild (LFW). In contrast to previous derivatives, which focus on pose, age, similarity, and adversarial attacks, our Cross-Quality Labeled Faces in the Wild (XQLFW) maximizes the quality difference. It contains only more realistic synthetically degraded images when necessary. Our proposed dataset is then used to further investigate the influence of image quality on several state-of-the-art approaches. With XQLFW, we show that these models perform differently in cross-quality cases, and hence, the generalizing capability is not accurately predicted by their performance on LFW. Additionally, we report baseline accuracy with recent deep learning models explicitly trained for cross-resolution applications and evaluate the susceptibility to image quality. To encourage further research in cross-resolution face recognition and incite the assessment of image quality robustness, we publish the database and code for evaluation.
description: 9 pages, 4 figures, 2 tables
Balancing Work, Family and School: Enrollment Pathways and Outcomes of Older Community College Students Compared to Traditional Age Students
Creators: name: Crosta, Peter Michael
name: Calcagno, Juan Carlos
name: Jenkins, Paul Davis
name: Bailey, Thomas R.
Publisher: name: Columbia University
Year: 2006
Subjects: Community college students--Education
Community colleges

description: This paper presents findings from a new study of the experiences and outcomes of older community college students - those who enter college for the first time at age 25 or later. We estimate a discrete-time hazard model using transcript data on a cohort of first-time community college students in Florida to compare the effect of enrollment pathways on educational outcomes of older students with those of traditional age students. Results suggest that reaching milestones such as fall-to-fall retention, obtaining 20 credits or completing 50% of the program is a more important positive factor affecting graduation probabilities for younger students than it is for older students. We also find that although remediation decreases the odds of graduating in any given term, older students who enroll in remediation are less negatively impacted than younger ones who do.
Delayed star formation in high-redshift stream-fed galaxies
Creators: name: Gabor, Jared M.
name: Bournaud, Frédéric
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose that star formation is delayed relative to the inflow rate in rapidly-accreting galaxies at very high redshift (z > 2) because of the energy conveyed by the accreting gas. Accreting gas streams provide fuel for star formation, but they stir the disk and increase turbulence above the usual levels compatible with gravitational instability, reducing the star formation efficiency in the available gas. After the specific inflow rate has sufficiently decreased - typically at z < 3 - galaxies settle in a self-regulated regime with efficient star formation. An analytic model shows that this interaction between infalling gas and young galaxies can significantly delay star formation and maintain high gas fractions (>40%) down to z = 2, in contrast to other galaxy formation models. Idealized hydrodynamic simulations of infalling gas streams onto primordial galaxies confirm the efficient energetic coupling at z > 2, and suggest that this effect is largely under-resolved in existing cosmological simulations.
description: Accepted for publication in MNRAS Letters. 5 pages, 3 figures
Collaborative Research: Elements: Advancing Data Science and Analytics for Water (DSAW)
Creators: name: Horsburgh, Jeffery S.
name: Crookston, Brian
name: Torres-Rua, Alfonso
name: Xu, Tianfang
name: Castronova, Anthony
Publisher: name: Zenodo
Year: 2022
Subjects: DSAW
Python
Data Science
Hydroinformatics
Water Data

description: Scientific and related management challenges in the water domain are inherently multi-disciplinary, requiring synthesis of data of multiple types from multiple domains. Many data manipulation, visualization, and analysis tasks performed by water scientists are difficult because (1) datasets are becoming larger and more complex; (2) standard data formats for common data types are not always agreed upon, and, when they are, they are not always mapped to an efficient structure for visualization and/or analysis within an analytical environment; and (3) water scientists generally lack training in data intensive scientific methods that would enable them to use new and existing tools to efficiently tackle large and complex datasets. This project advances Data Science and Analytics for Water (DSAW) through developing: (1) an advanced object data model that maps common water-related data types to performant data structures within the object-oriented Python language and analytical environment based upon standard file, data, and content types established by the Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI) HydroShare system; (2) two new Python packages that enable users to write Python code for automating retrieval of required water data, loading it into performant memory objects specified by the object data model we design, and performing analysis in a reproducible way that can be shared, collaborated around, and formally published for reuse. We have developed domain-specific data science applications to demonstrate how the new Python Packages can be paired with the powerful data science capabilities of existing Python packages like Pandas, numpy, and scikit-learn to develop advanced analytical workflows within a Python environment. By doing so, we are extending the data access, collaboration, and archival capabilities of the HydroShare data and model repository and promoting its use as a platform for reproducible water-data science.
description: Funding Agency: National Science Foundation (US)
Award Title: Collaborative Research: Elements: Advancing Data Science and Analytics for Water (DSAW)
Award Number: 1931297
Award URL: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1931297
ReelAbilities
Creators: name: Jackson, Jhia Louise
Publisher: name: Voices in Bioethics
Year: 2014

description: Quality of life is a standard phrase that can often be tossed into medical and bioethical discussions. When referring to a patient, this term sums up values such as respect for all persons, dignity, and serving the best interests of the patient. However, it can also be used to add validity to what would otherwise seem like an emotional response. “I wouldn’t want my child’s quality of life to be affected by...” “Well what sort of quality of life would they have if...” “Yes, but that’s not a good quality of life! They are missing out on...” “Not everyone can handle that type of quality of life though...” Phrases like the above are used to mask one key emotion: fear. Fear of the unknown. Uncertainty about our ability to thrive with a life we are unaccustomed to. Anxiety over accepting an unexpected challenge. Nonetheless, quality of life plays such an important part in our decision-making because all of our fears and concerns stem from a place of love. As potential parents are faced with the opportunity to screen embryos, mix and match selected DNA, and generally have more influence on the genetic make-up of their child, the questions surrounding “quality of life” are beginning to manifest themselves in a whole new way. No longer are the outcomes shaped by what type of life they had been living, and what a person would want moving forward. Reproductive technologies allow us to ask what we want for this potential person, and then make choices that will affect their entire lives. For those that have limited experiences interacting with people who are living with disabilities, answering quality of life questions may be negatively impacted by a lack of understanding. ReelAbilities: NY Disabilities Film Festival promotes awareness and appreciation of the lives of people who have different disabilities. The films include showing the day-to-day lives, medical experiences, work experiences, and artistic expressions of people with a wide variety of diagnoses. A quick scan through the film descriptions shows unique themes that are often not discussed or easily found in the media: a successful matchmaker, a car manufacturing company with over 1200 developmentally disabled workers, views about the implications of genetic enhancement, and much more. The festival lasts from March 6-11 and is hosted by the JCC in Manhattan with venues throughout the city. Tickets, scheduling, and further information can be found by going to www.newyork.reelabilities.org. This is an excellent opportunity to watch great films, learn more about a variety of disabilities, and speak with others who have experiences within the disabled community. If you are unable to attend, even just browsing through the website may provide some more insight into answering questions surrounding quality of life. ReelAbilities: NY Disabilities Film Festival March 6-11www.newyork.reelabilties.org ReelAbilitiesNational program, other citieswww.reelabilities.org
description: Voices in Bioethics, Archives (2014-2015)
Comparative study of Authorship Identification Techniques for Cyber Forensics Analysis
Creators: name: Nirkhi, Smita
name: Dharaskar, R. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: Cryptography and Security (cs.CR)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Authorship Identification techniques are used to identify the most appropriate author from group of potential suspects of online messages and find evidences to support the conclusion. Cybercriminals make misuse of online communication for sending blackmail or a spam email and then attempt to hide their true identities to void detection.Authorship Identification of online messages is the contemporary research issue for identity tracing in cyber forensics. This is highly interdisciplinary area as it takes advantage of machine learning, information retrieval, and natural language processing. In this paper, a study of recent techniques and automated approaches to attributing authorship of online messages is presented. The focus of this review study is to summarize all existing authorship identification techniques used in literature to identify authors of online messages. Also it discusses evaluation criteria and parameters for authorship attribution studies and list open questions that will attract future work in this area.