cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Convolution sums of some functions on divisors
Creators: name: Hahn, Heekyoung
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: One of the main goals in this paper is to establish convolution sums of functions for the divisor sums $\widetildeσ_s(n)=\sum_{d|n}(-1)^{d-1}d^s$ and $\widehatσ_s(n)=\sum_{d|n}(-1)^{\frac{n}{d}-1}d^s$, for certain $s$, which were first defined by Glaisher. We first introduce three functions $\mathcal{P}(q)$, $\mathcal{E}(q)$, and $\mathcal{Q}(q)$ related to $\widetildeσ(n)$, $\widehatσ(n)$, and $\widetildeσ_3(n)$, respectively, and then we evaluate them in terms of two parameters $x$ and $z$ in Ramanujan's theory of elliptic functions. Using these formulas, we derive some identities from which we can deduce convolution sum identities. We discuss some formulae for determining $r_s(n)$ and $δ_s(n)$, $s=4,$ $8$, in terms of $\widetildeσ(n)$, $\widehatσ(n)$, and $\widetildeσ_3(n)$, where $r_s(n)$ denotes the number of representations of $n$ as a sum of $s$ squares and $δ_s(n)$ denotes the number of representations of $n$ as a sum of $s$ triangular numbers. Finally, we find some partition congruences by using the notion of colored partitions.
description: This is an old paper uploaded for archival purposes
A Study of Retirement Community In-House Libraries
Creators: name: Gibson, Jessica C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007
Subjects: Aged--Information Services

description: The purpose of this paper is to study the libraries in five retirement communities, and to describe the history, collections, circulation practices, interlibrary lending practices, cataloging or organizational systems, staffing, and physical space of these libraries. The researcher conducted interviews with one contact at each of the five libraries. In addition, the researcher observed the library settings in order to gain an understanding of the context in which services and use is conducted. The study found that all of the libraries have some system for organizing the collections, although the extent of organization varies; all of the libraries include at least some donated materials; the libraries all include a variety of materials; four of the libraries have some circulation procedure; and three of the four libraries expressed a need for more space.
ความหลากชนิดของมดบริเวณป่าไผ่ในอุทยานแห่งชาติเขื่อนศรีนครินทร์ จังหวัดกาญจนบุรี
Creators: name: จิราพร  โพธิ์งาม
Publisher: name: มหาวิทยาลัยราชภัฏกาญจนบุรี
Year: 2558
Subjects: มด ความหลากชนิด
ป่าไผ่
อุทยานแห่งชาติเขื่อนศรีนครินทร์

description: วารสารวิชาการมหาวิทยาลัยราชภัฏกาญจนบุรี, 4, 1, 82
ผลิตภัณฑ์ชุมชน: อาหารและสมุนไพร
Creators: name: ฐิติพร  พระโพธิ์
Publisher: name: มหาวิทยาลัยราชภัฏกาญจนบุรี
Year: 2558
Subjects: ผลิตภัณฑ์ชุมชน
อาหาร
สมุนไพร

description: วารสารวิชาการมหาวิทยาลัยราชภัฏกาญจนบุรี, 4, 1, 47
วิสัยทัศน์องค์กรที่ส่งผลกระทบต่อประสิทธิภาพการกำกับดูแลกิจการที่ดีของบริษัทจดทะเบียนในตลาดหลักทรัพย์แห่งประเทศไทย
Creators: name: ชลิดา  ลิ้นจี่
Publisher: name: มหาวิทยาลัยราชภัฏกาญจนบุรี
Year: 2558
Subjects: วิสัยทัศน์องค์กร
การกำกับดูแลกิจการที่ดี

description: วารสารวิชาการมหาวิทยาลัยราชภัฏกาญจนบุรี, 4, 1, 36
B-glucosidase enzyme screening from various parts of Tabebuia argentea
Creators: name: Chariwat Pitsanuwong
Publisher: name: Faculty of Science and Technology, Suan Sunandha Rajabhat University
Year: 2018
Subjects: Bglucosidase, Tabebuia aurea, p-nitrophenyl-D-glucopyranoside

description: Suan Sunandha Science and Technology Journal, 5, 2, 6 to 10
On the social bias of speech self-supervised models
Creators: name: Lin, Yi-Cheng
name: Lin, Tzu-Quan
name: Lin, Hsi-Che
name: Liu, Andy T.
name: Lee, Hung-yi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Self-supervised learning (SSL) speech models have achieved remarkable performance in various tasks, yet the biased outcomes, especially affecting marginalized groups, raise significant concerns. Social bias refers to the phenomenon where algorithms potentially amplify disparate properties between social groups present in the data used for training. Bias in SSL models can perpetuate injustice by automating discriminatory patterns and reinforcing inequitable systems. This work reveals that prevalent SSL models inadvertently acquire biased associations. We probe how various factors, such as model architecture, size, and training methodologies, influence the propagation of social bias within these models. Finally, we explore the efficacy of debiasing SSL models through regularization techniques, specifically via model compression. Our findings reveal that employing techniques such as row-pruning and training wider, shallower models can effectively mitigate social bias within SSL model.
description: Accepted by INTERSPEECH 2024
Gauge Invariance at Large Charge
Creators: name: Antipin, Oleg
name: Bednyakov, Alexander
name: Bersini, Jahmall
name: Panopoulos, Pantelis
name: Pikelner, Andrey
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Quantum field theories with global symmetries simplify considerably in the large-charge limit allowing to compute correlators via a semiclassical expansion in the inverse powers of the conserved charges. A generalization of the approach to gauge symmetries has faced the problem of defining gauge-independent observables and, therefore, has not been developed so far. We employ the large-charge expansion to calculate the scaling dimension of the lowest-lying operators carrying $U(1)$ charge $Q$ in the critical Abelian Higgs model in $D=4-ε$ dimensions to leading and next-to-leading orders in the charge and all orders in the $ε$ expansion. Remarkably, the results match our independent diagrammatic computation of the three-loop scaling dimension of the operator $ϕ^Q(x)$ in the Landau gauge. We argue that this matching is a consequence of the equivalence between the gauge-independent dressed two-point function of Dirac type with the gauge-dependent two-point function of $ϕ^Q(x)$ in the Landau gauge. We, therefore, shed new light on the problem of defining gauge-independent exponents which has been controversial in the literature on critical superconductors as well as lay the foundation for large-charge methods in gauge theories.
description: LaTeX 6 pages, 1 figure, 1 table; v2: minor corrections, matches published version
Characteristics of the Villain in Children's, Young Adult, and Adult Fantasy: A Content Analysis
Creators: name: Vale, Katelynn
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014
Subjects: Children's literature
Content analysis
Fantasy fiction

description: This study utilized latent content analysis to determine the characteristics of villains in
fantasy novels written for children, young adults, and adults. Additionally, the study
sought to identify the differences in complexity of villains in these books by analyzing
the ways in which the villains were described and the ways in which they interacted with
the world around them. Twelve books were selected, four from each age range, from
among the most popular current fantasy novels. This study discovered that the
complexity of the villains increased with each step up in age range. The villains
characteristics also became more balanced between internally and externally defined
traits.
On the rotation periods of the components of the triple system TYC9300-0891-1AB/TYC9300-0529-1 in the Octans Association
Creators: name: Messina, Sergio
name: Monard, Berto
name: Worters, Hannah L.
name: Bromage, Gordon E.
name: Sanchez, Richardo Zanmar
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stellar rotation depends on different parameters. The range of values of these parameters causes the dispersion in the rotation period distributions observed in young stellar clusters/associations. We focus our investigation on the effects of different circumstellar environments on stellar rotation. More specifically, we are searching in stellar Associations for visual triple systems where all stellar parameters are similar, with the only exceptions of the unknown initial rotation period, and of the circum-stellar environment, in the sense that one of the two about equal-mass components has a close-by third 'perturber' component. In the present study we analyse the 35-Myr old visual triple system TYC 9300-0891-1AB + TYC 9300-0529-1 in the young Octans stellar association consisting of three equal-mass K0V components. We collected from the literature all information that allowed us to infer that the three components are actually physically bound forming a triple system and are members of the Octans Association. We collected broad-band photometric timeseries in two observation seasons. We discovered that all the components are variable, magnetically active, and from periodogram analysis we found the unresolved components TYC 9300-0891-1AB to have a rotation period P = 1.383d and TYC 9300-0529-1 a rotation period P = 1.634d. TYC 9300-0891-1A, TYC 9300-0891-1B, and TYC 9300-0529-1 have same masses, ages, and initial chemical compositions. The relatively small 16% rotation period difference measured by us indicates that all components had similar initial rotation periods and disc lifetimes, and the separation of 157AU between the component A and the 'perturber' component B (or vice-versa) has been sufficiently large to prevent any significant perturbation/shortening of the accretion-disc lifetime.
description: Accepted by New Astronomy 2015
The expression of probability, uncertainly and conjecture in Spanish and in Modern Greek
Creators: name: Kampouri Zacharoula
Publisher: name: Zenodo
Year: 2023
Subjects: Mood, indicative, tense, future, conditional, temporality, temporal relations, modal functions, conjecture, possibility, posteriority, temporal dislocation.
Modo, indicativo, tiempo, futuro, condicional, temporalidad, relaciones temporales, funciones modales, conjetura, posibilidad, posterioridad, dislocación temporal.
Έγκλιση, οριστική, χρόνος, μέλλοντας, υποθετική, χρονικότητα, χρονικές σχέσεις, εγκλιτικές λειτουργίες, εικασία, πιθανότητα, υστερόχρονο, χρονική μετατόπιση.

description: This doctoral dissertation, entitled The expression of probability, uncertainly and conjecture in Spanish and in Modern Greek, deals with the future tenses of the Indicative in Spanish and in Modern Greek, starting with the reasons that aroused our research interest in this field. In a constantly globalized world, the need for foreign language learning is imperative. In particular, Spanish continuously gains ground in the preferences of Greek students. Greek and Spanish share similarities in terms of phonetics, phonology, syntax and semantics, nevertheless the field of linguistic research between these languages remains relatively virgin. For this study we have chosen to study the field of the verbal paradigm, one of the fields where a high number of errors by Greek learners of Spanish are detected and especially the field of the "future tenses”. Considering that tenses do not only express temporal events but also have the capacity to express extratemporal content and meanings that do not always correspond to the value that is traditionally assigned to them, we try to study the mechanisms through the future tenses express probability, uncertainty and conjecture. The present study aims to adequately characterize and explain linguistic affinities and divergences, through a contrastive analysis perspective, of the future and conditional tenses of the Spanish and Greek indicative. For this, we base our analysis on the theory of temporality as proposed for Spanish by Veiga (2008) and elaborated in several subsequent works (among others Veiga 2012, 2013, 2015a, 2015b, 2020; Leontaridi 2019), adapting it at the same time, to the structure of the Greek verbal paradigm. The analysis of the linguistic facts has revealed that the coincidences in the categories of temporality and temporal dislocation that characterize the two languages makes it possible to explain both ‘straight’ and ‘dislocated’ uses of a verbal form, and at the same time show that as far as the latter are concerned, we are dealing with systematic rather than ‘idiomatic’ uses in both languages. Key words: Mood, indicative, tense, future, conditional, temporality, temporal relations, modal functions, conjecture, possibility, posteriority, temporal dislocation.
End-to-End Learning for Symbol-Level Precoding and Detection with Adaptive Modulation
Creators: name: Liu, Rang
name: Bo, Zhu
name: Li, Ming
name: Liu, Qian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Conventional symbol-level precoding (SLP) designs assume fixed modulations and detection rules at the receivers for simplifying the transmit precoding optimizations, which greatly limits the flexibility of SLP and the communication quality-of-service (QoS). To overcome the performance bottleneck of these approaches, in this letter we propose an end-to-end learning based approach to jointly optimize the modulation orders, the transmit precoding and the receive detection for an SLP communication system. A neural network composed of the modulation order prediction (MOP-NN) module and the symbol-level precoding and detection (SLPD-NN) module is developed to solve this mathematically intractable problem. Simulations verify the notable performance improvement brought by the proposed end-to-end learning approach.
description: 5 pages, 4 figures, accepted by WCL
การเตรียมความพร้อมของนักศึกษาแพทย์สำหรับการประเมินและรับรองความรู้ความสามารถในการประกอบวิชาชีพเวชกรรมขั้นตอนที่ 1 การศึกษานำร่อง
Creators: name: วีรเธียร ถวัลย์วงศ์ศรี
Publisher: name: มหาวิทยาลัยวลัยลักษณ์
Year: 2017
Subjects: การประเมินและรับรองความรู้ความสามารถในการประกอบวิชาชีพเวชกรรม ขั้นตอนที่ 1
การเรียนรู้ด้วยตนเอง
ปัจจัยที่มีผลต่อผลคะแนนสอบ
การเตรียมความพร้อม
การวิจัยแบบผสม
แพทยศาสตร์ศึกษา

description: วารสารนวัตกรรมการเรียนรู้ มหาวิทยาลัยวลัยลักษณ์, 3, 2, 21-41
Emo-bias: A Large Scale Evaluation of Social Bias on Speech Emotion Recognition
Creators: name: Lin, Yi-Cheng
name: Wu, Haibin
name: Chou, Huang-Cheng
name: Lee, Chi-Chun
name: Lee, Hung-yi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The rapid growth of Speech Emotion Recognition (SER) has diverse global applications, from improving human-computer interactions to aiding mental health diagnostics. However, SER models might contain social bias toward gender, leading to unfair outcomes. This study analyzes gender bias in SER models trained with Self-Supervised Learning (SSL) at scale, exploring factors influencing it. SSL-based SER models are chosen for their cutting-edge performance. Our research pioneering research gender bias in SER from both upstream model and data perspectives. Our findings reveal that females exhibit slightly higher overall SER performance than males. Modified CPC and XLS-R, two well-known SSL models, notably exhibit significant bias. Moreover, models trained with Mandarin datasets display a pronounced bias toward valence. Lastly, we find that gender-wise emotion distribution differences in training data significantly affect gender bias, while upstream model representation has a limited impact.
description: Accepted by INTERSPEECH 2024
Management of Edentulous Spaces with Autotransplantation of A Tooth withComplete Root Formation Using an Interdisciplinary Approach and withA Seven-year Follow-up
Creators: name: Malaivijitnond, Sutti
Publisher: name: The Dental Association of Thailand
Year: 2023
Subjects: Autotransplantation
Complete root formation
Orthodontic treatment

description: Journal of The Dental Association of Thailand, 73, 3, 163-176
Ab initio no-core shell model description of $^{10-14}$C isotopes
Creators: name: Choudhary, Priyanka
name: Srivastava, Praveen C.
name: Gennari, Michael
name: Navratil, Petr
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a systematic study of the $^{10-14}\text{C}$ isotopes within the \textit{ab initio} no-core shell model theory. We apply four different realistic nucleon-nucleon (NN) interactions: (i) the charge-dependent Bonn 2000 (CDB2K) potential (ii) the inside non-local outside Yukawa (INOY) potential (iii) the next-to-next-to-next-to-leading order (N$^3$LO) potential, and (iv) the optimized next-to-next-to-leading order (N$^2$LO$_{opt}$) potential. We report the low-lying energy spectra of both positive and negative parity states for the $^{10-14}\text{C}$ isotopes and investigate the level structures. We also calculate electromagnetic properties such as transition strengths, quadrupole and magnetic moments. The dependence of point-proton radii on the harmonic oscillator frequency and basis space is shown. We present calculations of the translation invariant one-body density matrix in the no-core shell model and discuss isotopic trends in the density distribution. The maximum basis space reached is $10 \hbar Ω$ for $^{10}\text{C}$ and $8 \hbar Ω$ for $^{11-14}\text{C}$, with a maximum M-scheme dimension of $1.3 \times 10^{9}$ for $^{10}\text{C}$. We found that while the INOY interaction gives the best description of the ground state energies, the N$^3$LO interaction best reproduces the point-proton radii.
description: 21 pages, 12 figures
Information Literacy Beyond the Library: A Study of the Attitudes and Practices of History Faculty at UNC
Creators: name: von Isenburg, Megan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004
Subjects: College and university libraries--Relations with faculty and curriculum
College and university libraries--Bibliographic instruction
Bibliographic Instruction History Students

description: This study describes a questionnaire sent to History faculty at the University of North Carolina at Chapel Hill. The survey was conducted to determine from the faculty's perspective what levels of bibliographic instruction are currently being provided to their students, whether they believe such instruction is necessary, and with which types of the library's History resources they believe students should be familiar. While librarians often lament the small number of classes brought to the library for bibliographic instruction, the survey shows that faculty say that they do provide some research instruction, that the quality of student research could be improved, and that their students should be familiar with a number of library resources. Findings also suggest that librarian-led bibliographic instruction sessions can improve the quality of student research. Recommendations are made to help close the disconnect between faculty and librarians. Next steps are also suggested for further study.
แนวโน้มวิธีการเรียนการสอนยุคใหม่ด้วยเครื่องมือประเมินผลระหว่างเรียนออนไลน์
Creators: name: วิชัย พัวรุ่งโรจน์
Publisher: name: มหาวิทยาลัยวลัยลักษณ์
Year: 2017
Subjects: การประเมินผลระหว่างเรียน
การเรียนรู้ด้วยเกมส์
เกมิฟิเคชั่น
ระบบรับการตอบสนองจากนักเรียน
การมีส่วนร่วมของนักเรียน
การเรียนรู้เชิงรุก
การเรียนรู้ในศตวรรษที่ 21

description: วารสารนวัตกรรมการเรียนรู้ มหาวิทยาลัยวลัยลักษณ์, 3, 2, 45-68
การศึกษาประสบการณ์การทำผิดวินัยของนักเรียน ระดับชั้นมัธยมศึกษาตอนต้น จังหวัดปทุมธานี
Creators: name: ชายแดน เดชาฤทธิ์
Publisher: name: มหาวิทยาลัยวลัยลักษณ์
Year: 2018
Subjects: ประสบการณ์การทำผิดวินัย
ปัญหาเรื่องวินัย
อุปสรรคของการเรียนรู้

description: วารสารนวัตกรรมการเรียนรู้ มหาวิทยาลัยวลัยลักษณ์, 4, 1, 3-22
Development and Testing of Oral Health Literacy Measuring Tool for Patients inComprehensive Dental Clinic, Faculty of Dentistry, Chiang Mai University
Creators: name: Chatiketu, Piyanart
Publisher: name: The Dental Association of Thailand
Year: 2023
Subjects: Health literacy
Oral health literacy
Comprehensive dental
Maintenance patient

description: Journal of The Dental Association of Thailand, 73, 3, 177-189
Stabilizing period-doubled density waves by spin-orbit coupling in Bose-Einstein condensates in optical lattices
Creators: name: Wang, Chenhui
name: Zhang, Yongping
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In atomic Bose-Einstein condensates in optical lattices, mean-field energy can support the existence of period-doubled density waves, which are similar to Bloch waves but have the double periodicity of the underlying lattice potentials. However, they are dynamically unstable. Here, we propose to use the spin-orbit coupling to stabilize the period-doubled density waves. The stabilization mechanism is revealed to relate to interaction-induced spontaneous symmetry breaking of the spin-flip parity symmetry.
description: 9 pages, 5 figures
การพัฒนาสติกเกอร์บนแอปพลิเคชันไลน์ชุดการ์ตูนนักศึกษาครุศาสตร์
Creators: name: ศุภรัตน์ เจริญพิทักษ์
Publisher: name: มหาวิทยาลัยวลัยลักษณ์
Year: 2018
Subjects: สติกเกอร์บนแอปพลิเคชันไลน์
การ์ตูน
นักศึกษาครุศาสตร์

description: วารสารนวัตกรรมการเรียนรู้ มหาวิทยาลัยวลัยลักษณ์, 4, 1, 35-47
Male School Library Media Specialists as Role Models: Do They Make a Positive Impact on Boys in Elementary Schools?
Creators: name: Missé, James B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009
Subjects: School libraries--North Carolina
School librarians

description: Male educators have been encouraged by many to become role models for boys in elementary schools. Similar to male teachers in elementary education, males represent a very small number of school library media specialists in elementary schools. This paper examines arguments for and against male role models and uses these arguments as a platform to construct a study which analyzes whether or not male media specialists make an impact on the academic achievement of boys in elementary schools. In this study, simple random sampling in conjunction with snowball sampling is used to compare the academic achievement of boys in North Carolina elementary schools with male school library media specialists to similar and randomly sampled schools without male library media specialists in the same state.
On generic convergence of successive approximations of mappings with convex and compact point images
Creators: name: Bargetz, Christian
name: Medjic, Emir
name: Pirk, Katriin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47H04, 47H09, 47H10, 54E52

description: We study the generic behavior of the method of successive approximations for set-valued mappings in separable Banach spaces. We consider the case of nonexpansive mappings with convex and compact point images and show that for the typical such mapping and typical points of its domain the sequence of successive approximations is unique and converges to a fixed point of the mapping.
description: Accepted version of the article; 25 pages
Traffic distributions of random band matrices
Creators: name: Au, Benson
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 15B52, 46L53, 46L54, 60B20

description: We study random band matrices within the framework of traffic probability, an operadic non-commutative probability theory introduced by Male based on graph operations. As a starting point, we revisit the familiar case of the permutation invariant Wigner matrices and compare the situation to the general case in the absence of this invariance. Here, we find a departure from the usual free probabilistic universality of the joint distribution of independent Wigner matrices. We then show how the traffic space of Wigner matrices completely realizes the traffic central limit theorem. We further prove general Markov-type concentration inequalities for the joint traffic distribution of independent Wigner matrices. We then extend our analysis to random band matrices, as studied by Bogachev, Molchanov, and Pastur, and investigate the extent to which the joint traffic distribution of independent copies of these matrices deviates from the Wigner case.
description: 86 pages, 30 figures. v2: Scope of article extended to random band matrices
การพัฒนาสื่อมัลติมีเดียคอมพิวเตอร์ เรื่อง หลักการทำงานของคอมพิวเตอร์ สำหรับนักเรียนชั้นมัธยมศึกษาปีที่ 1 โรงเรียนวัดพุทไธศวรรย์
Creators: name: ปรเมศวร์ สิริสุรภักดี
Publisher: name: มหาวิทยาลัยวลัยลักษณ์
Year: 2018
Subjects: สื่อมัลติมีเดียคอมพิวเตอร์
หลักการทำงานของคอมพิวเตอร์

description: วารสารนวัตกรรมการเรียนรู้ มหาวิทยาลัยวลัยลักษณ์, 4, 1, 49-62
Efficiently computing the Uhlmann fidelity for density matrices
Creators: name: Baldwin, Andrew J.
name: Jones, Jonathan A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the problem of efficiently computing the Uhlmann fidelity in the case when explicit density matrix descriptions are available. We derive an alternative formula which is simpler to evaluate numerically, saving a factor of 10 in time for large matrices.
description: Phys. Rev A (in press). 3 pages, no figures. Slightly revised following comments from reviewers and others
The Abolishment of History in Nigerian Primary and Secondary Schools The Aftermath, 1983-2021_OBASA.pdf
Creators: name: Obasa, Funmilayo
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430399
subject: Historical studies not elsewhere classified

description: This study documents the consequences of the removal of history from the primary and junior secondary school curricula in Nigeria between the 1980s and 2021. It acknowledges history's pivotal role in the decolonization of Nigeria and the continued development of the country. The absence of detailed documentation serves as the motivation for this research. The investigation employs a mixed-methods approach, combining qualitative and quantitative methodologies to assess the effects of history's abolition. Qualitative methods involved oral interviews with historians, complemented by an analysis of primary and secondary sources. Meanwhile, quantitative data from existing studies quantified the repercussions. Tracing the evolution of history education in Nigeria from colonial times to independence, this study chronicles the rise (late 1940s) and fall (1970s) of the study of history. It identifies five causes of the decline: the prioritization of technology and science over the humanities, the economic factor, poor leadership and accountability, nationalist history, and the role of the West. Because history failed to address Nigeria’s ethnic, religious and political woes, the government replaced history with subjects like social studies, government and civic education in the 1980s and removed history from the curriculum in 2008. The study categorizes the consequences of this removal into three key areas: nation-building and development, historical scholarship, and national consciousness and identity. The loss of history had economic, democratic, and ethnic repercussions, impacting tourism, government accountability and transparency. Historical scholarship declined, and alternative subjects (social studies, civic and government) failed to foster national identity. Despite these challenges, the study offers hope by examining the reintroduction of history into the curriculum by the Historical Society of Nigeria, addressing related challenges, and emphasizing the importance of history in nation-building, scholarship, and identity formation.
Accessibility Analysis and Redesign of the Durham County Library Website to Serve the Needs of Visually Impaired Users
Creators: name: Wachiaya, Elizabeth
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016
Subjects: Accessible websites for people with disabilities
User interfaces
Web design

description: When it comes to web accessibility, two sets of guidelines are commonly used - Web Content Accessibility Guidelines (WCAG) and Section 508, however due to constant technology changes some rules in these guidelines become obsolete. This study seeks to add a new perspective in evaluating web accessibility - user interface/experience professionals who keep their ears on the ground for user and technology trends and focusing on users with visual impairment. It examines the Durham County Library website to find its inadequacies in catering for visually impaired users using recommendations from professional articles combined with the current guidelines (WCAG and Section 508). Results from analysis show that layout, content and navigation are the areas most lacking in accessibility while images, tables and frames are the more conforming elements. Finally, this study makes suggestions on improving the website so it is easier for the visually impaired user to access information.
Exciton band structure in layered MoSe2: from a monolayer to the bulk limit
Creators: name: Arora, Ashish
name: Nogajewski, Karol
name: Molas, Maciej R.
name: Koperski, Maciej
name: Potemski, Marek
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present the micro-photoluminescence ($μ$PL) and micro-reflectance contrast spectroscopy studies on thin films of MoSe2 with layer thicknesses ranging from a monolayer (1L) up to 5L. The thickness dependent evolution of the ground and excited state excitonic transitions taking place at various points of the Brillouin zone is determined. Temperature activated energy shifts and linewidth broadenings of the excitonic resonances in 1L, 2L and 3L flakes are accounted for by using standard formalisms previously developed for semiconductors. A peculiar shape of the optical response of the ground state (A) exciton in monolayer MoSe2 is tentatively attributed to the appearance of Fano-type resonance. Rather trivial and clearly decaying PL spectra of monolayer MoSe2 with temperature confirm that the ground state exciton in this material is optically bright in contrast to a dark exciton ground state in monolayer WSe2.
description: 11 pages, 4 figures, excitons, MoSe2, 2D semiconductors, Transition metal dichalcogenides, excited states of excitons, Fano-resonance
Generalized Wardrop Equilibrium for Charging Station Selection and Route Choice of Electric Vehicles in Joint Power Distribution and Transportation Networks
Creators: name: Bakhshayesh, Babak Ghaffarzadeh
name: Kebriaei, Hamed
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents the equilibrium analysis of a game composed of heterogeneous electric vehicles (EVs) and a power distribution system operator (DSO) as the players, and charging station operators (CSOs) and a transportation network operator (TNO) as coordinators. Each EV tries to pick a charging station as its destination and a route to get there at the same time. However, the traffic and electrical load congestion on the roads and charging stations lead to the interdependencies between the optimal decisions of EVs. CSOs and the TNO need to apply some tolling to control such congestion. On the other hand, the pricing at charging stations depends on real-time distributional locational marginal pricing, which is determined by the DSO after solving the optimal power flow over the power distribution network. This paper also takes into account the local and the coupling/infrastructure constraints of EVs, transportation and distribution networks. This problem is modeled as a generalized aggregative game, and then a decentralized learning method is proposed to obtain an equilibrium point of the game, which is known as variational generalized Wardrop equilibrium. The existence of such an equilibrium point and the convergence of the proposed algorithm to it are proven. We undertake numerical studies on the Savannah city model and the IEEE 33-bus distribution network and investigate the impact of various characteristics on demand and prices.
Large N meson masses from a matrix model
Creators: name: González-Arroyo, Antonio
name: Okawa, Masanori
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explain how to compute meson masses in the large $N$ limit using the twisted Eguchi-Kawai model. A very simple formula is derived, and we show how it leads in a fast and efficient way to results which are in fairly good agreement with other determinations. The method is easily extensible to reduced models with dynamical fermions based on the twisted reduction idea.
description: latex 14 pages and 3 figures
Communicating with university students in an emergency: A survey of what they know and how to reach them
Creators: name: Baldwin, Timothy
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008
Subjects: Natural disasters--United States
Universities and colleges--United States--Safety measures
Natural disaster warning systems--Research
Emergency management--United States

description: The recent emergencies on college campuses including the Virginia Tech massacre of April, 2007, the Northern Illinois University shootings and the Union University tornado highlight the importance of disaster preparedness within the university community. This study is a survey exploring the daily rhythms of student life, the communication channels open to students and students composition and characteristics. This survey finds that students have frequent access to communication technologies which can be utilized as warning channels. The study also concludes that many students do not actively seek out information relative to emergency preparedness and the gaps in the populations knowledge require increased disaster education by the university.
On the stability of scale-invariant black holes
Creators: name: Boudet, Simon
name: Rinaldi, Massimiliano
name: Silveravalle, Samuele Marco
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Quadratic scale-invariant gravity non minimally coupled to a scalar field provides a competitive model for inflation, characterized by the transition from an unstable to a stable fixed point, both characterized by constant scalar field configurations. We provide a complementary analysis of the same model in the static, spherically symmetric setting, obtaining two Schwarzschild-de Sitter solutions, which corresponds to the two fixed points existing in the cosmological scenario. The stability of such solutions is thoroughly investigated from two different perspectives. First, we study the system at the classical level by the analysis of linear perturbations. In particular, we provide both analytical and numerical results for the late-time behavior of the perturbations, proving the stable and unstable character of the two solutions. Then we perform a semi-classical, non-linear analysis based on the Euclidean path integral formulation. By studying the difference between the Euclidean on-shell actions evaluated on both solutions, we prove that the unstable one has a meta-stable character and is spontaneously decaying into the stable fixed point which is always favoured.
description: 21 pages, 5 figures
The library of Doctor John Dee as it relates to libraries in the English and European Renaissances
Creators: name: Smith, David Francis
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: Libraries--History--1400-1600
Dee, John, 1527-1608--Library

description: Abstract: John Dee, an English scholar in the sixteenth century, was influenced by both the Continental rebirth of scholarship and the need for native repositories of knowledge and centers of scholarship in England when he created his large private library in the 1570s. The history and contents of the library indicate that the Italian Renaissance, as it spread outward from the continent, met England at a time when that country was in need of native repositories of knowledge and centers of scholarly exchange. Scholars such as Dee took the new developments of the continental Renaissance and implemented them in their own country to promote its individual advancement.
Efficient Product Search Tools for Online Consumers with Little Product Knowledge: Clustering Versus Faceted Search
Creators: name: Oh, Chi Young
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: Classification--Systems--Faceted
Usability testing
Information retrieval--Evaluation
Use studies--End-user searching

description: This study compares and contrasts different types of search tools-clustering search, rich-faceted search, and less-faceted search-in terms of their performance in online shopping product searches. In the experiment, two groups of people, a music-expert group and a computer-expert group, conducted searches for two different products (one for a novice search and the other for an expert search). Search performance was measured on three different shopping search websites-Clusty Shopping, PriceGrabber, and Yahoo Shopping. In addition, the participants' perceptions of each website's usefulness, directability/controllability, and their likelihood of future use are measured through their subjective ratings in questionnaires. The results of this research provide insight into how online consumers with different levels of product knowledge experience different types of search tools, with regard to search performance, perceived usefulness and controllability, and website preference.
A posteriori analysis of fully discrete method of lines DG schemes for systems of conservation laws
Creators: name: Dedner, Andreas
name: Giesselmann, Jan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present reliable a posteriori estimators for some fully discrete schemes applied to nonlinear systems of hyperbolic conservation laws in one space dimension with strictly convex entropy. The schemes are based on a method of lines approach combining discontinuous Galerkin spatial discretization with single- or multi-step methods in time. The construction of the estimators requires a reconstruction in time for which we present a very general framework first for odes and then apply the approach to conservation laws. The reconstruction does not depend on the actual method used for evolving the solution in time. Most importantly it covers in addition to implicit methods also the wide range of explicit methods typically used to solve conservation laws. For the spatial discretization, we allow for standard choices of numerical fluxes. We use reconstructions of the discrete solution together with the relative entropy stability framework, which leads to error control in the case of smooth solutions. We study under which conditions on the numerical flux the estimate is of optimal order pre-shock. While the estimator we derive is computable and valid post-shock for fixed meshsize, it will blow up as the meshsize tends to zero. This is due to a breakdown of the relative entropy framework when discontinuities develop. We conclude with some numerical benchmarking to test the robustness of the derived estimator.
Representation of Collaborative Search Results Using Faceted Search
Creators: name: Palshikar, Ketan S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: Graphical user interfaces
Information retrieval--Evaluation

description: This paper describes the design and implementation of a web-based, faceted interface for  searching and displaying web pages saved from collaborative information seeking using the  Results Space framework. Results Space project is part of Interaction Design Lab at the School  of Information and Library Science at the University of North Carolina at Chapel Hill. The  Results Space project focuses on managing search results across multiple sessions and multiple  collaborators. This paper describes the implementation of the web-interface that enables  presentation of these collaborative results using faceted search.  Once a user has worked on any collaborative project she needs to view and interact with the  results. An ability to view the results across multiple facets like projects, collaborators and  sources provides the user with a better depiction of the search efforts. This functionality can be  further enhanced using different representations in which the user can view the search results.  This paper discusses the process of developing a web application that provides such faceted  search interface and representation of the search results using timeline and table view.
Evaluation of 21-day Chatbot to Deliver Oral Hygiene Care for Caregivers in 0 - 5 Year- Children
Creators: name: Pithpornchaiyakul, Samerchit
Publisher: name: The Dental Association of Thailand
Year: 2023
Subjects: Engagement
Oral health care
Satisfaction
Child
Chatbot

description: Journal of The Dental Association of Thailand, 73, 3, 190-198
CONTENTdm(TM) Digital Collection Management Software and End-User Efficacy
Creators: name: Dickson, Margaret Elizabeth
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007
Subjects: Human-computer interaction
User interface design--Usability
User interfaces--Evaluation
Contentdm Digital Collection Management Software
Digital libraries

description: Digital library technologies have become increasingly more sophisticated in the effort to provide more and better access to the collections they contain. The evaluation of the usability of these technologies has not kept pace with technological developments, however, and the end-user has in some cases been left behind. This research study evaluates the usability of digital collections created using the CONTENTdm™ Digital Collection Management System. Using usability testing techniques with actual end-users, this study attempts to assess the efficacy of the CONTENTdm™ public interface as well as user attitudes toward it. Ten participants from three user groups performed eleven tasks designed to test the key functions of CONTENTdm™-created collections and then answered a series of questions about their experiences. Results from this study may be used to improve this software system and add to the literature surrounding the usability of digital libraries in general.
The UNC Plant Information Center's "Ask the Expert" module: a usability study
Creators: name: Warmoth, Emily K.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002
Subjects: World Wide Web
Ask the Expert
Plants
Botany
Interface usability

description: The UNC Plant Information Center's (PIC) "Ask the Expert" module is a question-answering system that allows PIC web site visitors to communicate with botanical experts at the North Carolina Botanical Garden. The objectives of this study were to test users' interactions with the "Ask the Expert" prototype while they sought answers to plant-specific questions and to measure users' satisfaction with specific aspects of the interface. A usability study was conducted with nine members of the PIC Advisory Panel using a web-based test instrument. The results show that participants' reactions to the "Ask the Expert" prototype were positive, especially with respect to its flexibility, ease of use, and the attractiveness of its interface. However, the study did identify some areas where the usability of the application can be improved, particularly with regard to clarifying the details of the multi-step process for submitting a question.
A Case Study on the Diversity Initiatives at the School of Information and Library Science at the University of North Carolina at Chapel Hill
Creators: name: Brown, Barrye
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014
Subjects: Diversity
University of North Carolina at Chapel Hill--School of Information and Library Science
Recruitment

description: This study examined the diversity initiatives at the School of Information and Library Science at the University of North Carolina at Chapel Hill (UNC-SILS), as they pertain to the recruitment and retention of students and faculty from historically underrepresented groups.   The case study method was used to gauge the extent to which "diversity" as a core value of the Information and Library Science profession has been embraced and implemented within the context of an Information and Library Science (ILS) school.  As such, this study addresses the following questions: 1.What is the history of the UNC-SILS diversity initiative?  2. How have the objectives of the diversity initiative at UNC-SILS been identified?  3. What major steps have been taken to promote diversity at UNC-SILS?  4. What steps are being taken to assess the success of the short and long term effects of the diversity initiative? What measures will be used?
Strong subadditivity and holography
Creators: name: Prudenziati, Andrea
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study in detail the relationship between strong subadditivity for a boundary field theory and energy conditions for its bulk dual in 2+1 dimensions. We provide a discussion of known facts and new results organized from the simplest case of a static system with collinear intervals to a time dependent one in a generic configuration, with particular focus on the holographic geometric description.
description: added one paragraph to explain one of the results, one more citation and a few typos corrected
The loss of the property of locality of the kernel in high-dimensional Gaussian process regression on the example of the fitting of molecular potential energy surfaces
Creators: name: Manzhos, Sergei
name: Ihara, Manabu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Kernel based methods including Gaussian process regression (GPR) and generally kernel ridge regression (KRR) have been finding increasing use in computational chemistry, including the fitting of potential energy surfaces and density functionals in high-dimensional feature spaces. Kernels of the Matern family such as Gaussian-like kernels (basis functions) are often used, which allows imparting them the meaning of covariance functions and formulating GPR as an estimator of the mean of a Gaussian distribution. The notion of locality of the kernel is critical for this interpretation. It is also critical to the formulation of multi-zeta type basis functions widely used in computational chemistry We show, on the example of fitting of molecular potential energy surfaces of increasing dimensionality, the practical disappearance of the property of locality of a Gaussian-like kernel in high dimensionality. We also formulate a multi-zeta approach to the kernel and show that it significantly improves the quality of regression in low dimensionality but loses any advantage in high dimensionality, which is attributed to the loss of the property of locality.