cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Frequency-Dependent Selection and the Evolution of Assortative Mating
Creators: name: Otto, S. P.
name: Servedio, M. R.
name: Nuismer, S. L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: A long-standing goal in evolutionary biology is to identify the conditions that promote the evolution of reproductive isolation and speciation. The factors promoting sympatric speciation have been of particular interest, both because it is notoriously difficult to prove empirically and because theoretical models have generated conflicting results, depending on the assumptions made. Here, we analyze the conditions under which selection favors the evolution of assortative mating, thereby reducing gene flow between sympatric groups, using a general model of selection, which allows fitness to be frequency dependent. Our analytical results are based on a two-locus diploid model, with one locus altering the trait under selection and the other locus controlling the strength of assortment (a “one-allele” model). Examining both equilibrium and nonequilibrium scenarios, we demonstrate that whenever heterozygotes are less fit, on average, than homozygotes at the trait locus, indirect selection for assortative mating is generated. While costs of assortative mating hinder the evolution of reproductive isolation, they do not prevent it unless they are sufficiently great. Assortative mating that arises because individuals mate within groups (formed in time or space) is most conducive to the evolution of complete assortative mating from random mating. Assortative mating based on female preferences is more restrictive, because the resulting sexual selection can lead to loss of the trait polymorphism and cause the relative fitness of heterozygotes to rise above homozygotes, eliminating the force favoring assortment. When assortative mating is already prevalent, however, sexual selection can itself cause low heterozygous fitness, promoting the evolution of complete reproductive isolation (akin to “reinforcement”) regardless of the form of natural selection.
Statistics of X-Ray Polarization Measurements
Creators: name: Montgomery, C. G.
name: Swank, J. H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The polarization of an X-ray beam that produces electrons with velocity components perpendicular to the beam generates an azimuthal distribution of the ejected electrons. We present methods for simulating and for analyzing the angular dependence of electron detections which enable us to derive simple analytical expressions for useful statistical properties of observable data. The derivations are verified by simulations. While we confirm the results of previous work on this topic, we provide an extension needed for analytical treatment of the full range of possible polarization amplitudes.
description: 20 pages, 5 figures, published in the Astrophysical Journal, typos corrected
Genetic Changes Accompanying the Evolution of Host Specialization in Drosophila sechellia
Creators: name: Jones, C. D.
name: Dworkin, I.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Changes in host specialization contribute to the diversification of phytophagous insects. When shifting to a new host, insects evolve new physiological, morphological, and behavioral adaptations. Our understanding of the genetic changes responsible for these adaptations is limited. For instance, we do not know how often host shifts involve gain-of-function vs. loss-of-function alleles. Recent work suggests that some genes involved in odor recognition are lost in specialists. Here we show that genes involved in detoxification and metabolism, as well as those affecting olfaction, have reduced gene expression in Drosophila sechellia—a specialist on the fruit of Morinda citrifolia. We screened for genes that differ in expression between D. sechellia and its generalist sister species, D. simulans. We also screened for genes that are differentially expressed in D. sechellia when these flies chose their preferred host vs. when they were forced onto other food. D. sechellia increases expression of genes involved with oogenesis and fatty acid metabolism when on its host. The majority of differentially expressed genes, however, appear downregulated in D. sechellia. For several functionally related genes, this decrease in expression is associated with apparent loss-of-function alleles. For example, the D. sechellia allele of Odorant binding protein 56e (Obp56e) harbors a premature stop codon. We show that knockdown of Obp56e activity significantly reduces the avoidance response of D. melanogaster toward M. citrifolia. We argue that apparent loss-of-function alleles like Obp56e potentially contributed to the initial adaptation of D. sechellia to its host. Our results suggest that a subset of genes reduce or lose function as a consequence of host specialization, which may explain why, in general, specialist insects tend to shift to chemically similar hosts.
Contact Geometry of the Pontryagin Maximum Principle
Creators: name: Ohsawa, Tomoki
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 37J55, 49J15, 53D10

description: This paper gives a brief contact-geometric account of the Pontryagin maximum principle. We show that key notions in the Pontryagin maximum principle---such as the separating hyperplanes, costate, necessary condition, and normal/abnormal minimizers---have natural contact-geometric interpretations. We then exploit the contact-geometric formulation to give a simple derivation of the transversality condition for optimal control with terminal cost.
description: 10 pages, 4 figures
ความรู้ทางคณิตศาสตร์สำหรับการสอน : องค์ประกอบและแนวทางการประเมิน
Creators: name: ศันสนีย์ เณรเทียน
Publisher: name: ศูนย์นวัตกรรมทางการศึกษา สื่อสิ่งพิมพ์ และสื่อออนไลน์ จุฬาลงกรณ์มหาวิทยาลัย
Year: 2566
Subjects: ความรู้ทางคณิตศาสตร์สำหรับการสอน
ความรู้ทางคณิตศาสตร์
ความรู้ในเนื้อหาผสานวิธีสอน
การประเมินครู

description: วารสารครุศาสตร์, 51, 1, EDUCU5101004 (14 pages)
On the question of current conservation for the Two-Body Dirac equations of constraint theory
Creators: name: Lienert, Matthias
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Two-Body Dirac equations of constraint theory are of special interest not only in view of applications for phenomenological calculations of mesonic spectra but also because they avoid no-go theorems about relativistic interactions. Furthermore, they provide a quantum mechanical description in a manifestly Lorentz invariant way using the concept of a multi-time wave function. In this paper, we place them into the context of the multi-time formalism of Dirac, Tomonaga and Schwinger for the first time. A general physical and mathematical framework is outlined and the mechanism which permits relativistic interaction is identified. The main requirement derived from the general framework is the existence of conserved tensor currents with a positive component which can play the role of a probability density. We analyze this question for a general class of Two-Body Dirac equations thoroughly and comprehensively. While the free Dirac current is not conserved, it is possible to find replacements. Improving on previous research, we achieve definite conclusions whether restrictions of the function space or of the interaction terms can guarantee the positive definiteness of the currents -- and whether such restrictions are physically adequate. The consequences of the results are drawn, with respect to both applied and foundational perspectives.
description: 27 pages, no figures; v2: comparison with norm of Crater and Van Alstine and discussion of results on decay rates added
Mass Reach Scaling for Future Hadron Colliders
Creators: name: Rizzo, Thomas G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The primary goal of any future hadron collider is to discover new physics (NP) associated with a high mass scale, $M$, beyond the range of the LHC. In order to maintain the same {\it relative} mass reach for NP, $M/{\sqrt s}$, as $\sqrt s$ increases, Richter recently reminded us that the required integrated luminosity obtainable at future hadron colliders (FHC) must grow rapidly, $\sim s$, in the limit of naive scaling. This would imply, eg, a $\sim 50$-fold increase in the required integrated luminosity when going from the 14 TeV LHC to a FHC with $\sqrt s=100$ TeV, an increase that would prove quite challenging on many different fronts. In this paper we point out, due to the scaling violations associated with the evolution of the parton density functions (PDFs) and the running of the strong coupling, $α_s$, that the actual luminosity necessary in order to maintain any fixed value of the relative mass reach is somewhat greater than this scaling result indicates. However, the actual values of the required luminosity scaling are found to be dependent upon the detailed nature of the NP being considered. Here we elucidate this point explicitly by employing several specific benchmark examples of possible NP scenarios and briefly discuss the (relatively weak) search impact in each case if these luminosity goals are not met.
description: 17 pages, 7 figs, latex; updated discussion etc, new figs and table added
High Rates of "Unselected" Aneuploidy and Chromosome Rearrangements in tel1 mec1 Haploid Yeast Strains
Creators: name: Vernon, M.
name: Lobachev, K.
name: Petes, T. D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: The yeast TEL1 and MEC1 genes (homologous to the mammalian ATM and ATR genes, respectively) serve partially redundant roles in the detection of DNA damage and in the regulation of telomere length. Haploid yeast tel1 mec1 strains were subcultured nonselectively for ∼200 cell divisions. The subcultured strains had very high rates of chromosome aberrations: duplications, deletions, and translocations. The breakpoints of the rearranged chromosomes were within retrotransposons (Ty or δ-repeats), and these chromosome aberrations nonrandomly involved chromosome III. In addition, we showed that strains with the hypomorphic mec1-21 allele often became disomic for chromosome VIII. This property of the mec1-21 strains is suppressed by a plasmid containing the DNA2 gene (located on chromosome VIII) that encodes an essential nuclease/helicase involved in DNA replication and DNA repair.
CAPABLE D7.6: Informed Patient Consent/Assent Form, Ethical Committee Approval, Training Materials, and Technical Manual for Maintenance
Creators: name: Quaglini, Silvana
name: Sacchi, Lucia
name: Peleg, Mor
name: Tibollo, Valentina
Publisher: name: Zenodo
Year: 2023
Subjects: pilot study
study authorization
training plan
software maintenance

description: In this deliverable, we present the activities carried out in WP7 in preparation for the CAPABLE pilot studies. These activities include: the preparation of the preliminary documentation for study authorization in compliance to the current EU regulations in terms of data protection and medical devices usage, the preparation of a training plan for the users of the system and for the technical staff who will support users during the study, and the definition of the policies for the maintenance of the CAPABLE software and of the devices that are needed for it to be used. This document is organized into three Sections, each one related to the described activities. Being a Demonstration deliverable, it includes references to all the documentation that has been prepared during the last year of the project. The links to the available documentation are reported in the Annexes Section.
description: This deliverable is a part of a project receiving funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 875052
Patterns of Amino Acid Evolution in the Drosophila ananassae Chimeric Gene, siren, Parallel Those of Other Adh-Derived Chimeras
Creators: name: Jones, C. D.
name: Shih, H.-J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: siren1 and siren2 are novel alcohol dehydrogenase (Adh)-derived chimeric genes in the Drosophila bipectinata complex. D. ananassae, however, harbors a single homolog of these genes. Like other Adh-derived chimeric genes, siren evolved adaptively shortly after it was formed. These changes likely shifted the catalytic activity of siren.
Role of Proliferating Cell Nuclear Antigen Interactions in the Mismatch Repair-Dependent Processing of Mitotic and Meiotic Recombination Intermediates in Yeast
Creators: name: Petes, T. D.
name: Jinks-Robertson, S.
name: Stone, J. E.
name: Ozbirn, R. G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: The mismatch repair (MMR) system is critical not only for the repair of DNA replication errors, but also for the regulation of mitotic and meiotic recombination processes. In a manner analogous to its ability to remove replication errors, the MMR system can remove mismatches in heteroduplex recombination intermediates to generate gene conversion events. Alternatively, such mismatches can trigger an MMR-dependent antirecombination activity that blocks the completion of recombination, thereby limiting interactions between diverged sequences. In Saccharomyces cerevisiae, the MMR proteins Msh3, Msh6, and Mlh1 interact with proliferating cell nuclear antigen (PCNA), and mutations that disrupt these interactions result in a mutator phenotype. In addition, some mutations in the PCNA-encoding POL30 gene increase mutation rates in an MMR-dependent manner. In the current study, pol30, mlh1, and msh6 mutants were used to examine whether MMR–PCNA interactions are similarly important during mitotic and meiotic recombination. We find that MMR–PCNA interactions are important for repairing mismatches formed during meiotic recombination, but play only a relatively minor role in regulating the fidelity of mitotic recombination.
Foldy-Wouthuysen transformation for non-Hermitian Hamiltonians
Creators: name: Alexandre, Jean
name: Bender, Carl M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Two Non-Hermitian fermion models are proposed and analyzed by using Foldy-Wouthuysen transformations. One model has Lorentz symmetry breaking and the other has a non-Hermitian mass term. It is shown that each model has real energies in a given region of parameter space, where they have a locally conserved current.
description: 7 pages
Placental and Embryonic Growth Restriction in Mice With Reduced Function Epidermal Growth Factor Receptor Alleles
Creators: name: Dackor, J.
name: Threadgill, D. W.
name: Caron, K. M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Embryos lacking an epidermal growth factor receptor (EGFR) exhibit strain-specific defects in placental development that can result in mid-gestational embryonic lethality. To determine the level of EGFR signaling required for normal placental development, we characterized congenic strains homozygous for the hypomorphic Egfrwa2 allele or heterozygous for the antimorphic EgfrWa5 allele. Egfrwa2 homozygous embryos and placentas exhibit strain-dependent growth restriction at 15.5 days post-coitus while EgfrWa5 heterozygous placentas are only slightly reduced in size with no effect on embryonic growth. Egfrwa2 homozygous placentas have a reduced spongiotrophoblast layer in some strains, while spongiotrophoblasts and glycogen cells are almost completely absent in others. Our results demonstrate that more EGFR signaling occurs in EgfrWa5 heterozygotes than in Egfrwa2 homozygotes and suggest that Egfrwa2 homozygous embryos model EGFR-mediated intrauterine growth restriction in humans. We also consistently observed differences between strains in wild-type placenta and embryo size as well as in the cellular composition and expression of trophoblast cell subtype markers and propose that differential expression in the placenta of Glut3, a glucose transporter essential for normal embryonic growth, may contribute to strain-dependent differences in intrauterine growth restriction caused by reduced EGFR activity.
A High Frequency of Beneficial Mutations Across Multiple Fitness Components in Saccharomyces cerevisiae
Creators: name: Joseph, S. B.
name: Hall, D. W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Mutation-accumulation experiments are widely used to estimate parameters of spontaneous mutations affecting fitness. In many experiments only one component of fitness is measured. In a previous study involving the diploid yeast Saccharomyces cerevisiae, we measured the growth rate of 151 mutation-accumulation lines to estimate parameters of mutation. We found that an unexpectedly high frequency of fitness-altering mutations was beneficial. Here, we build upon our previous work by examining sporulation efficiency, spore viability, and haploid growth rate and find that these components of fitness also show a high frequency of beneficial mutations. We also examine whether mutation-acycumulation (MA) lines show any evidence of pleiotropy among accumulated mutations and find that, for most, there is none. However, MA lines that have zero fitness (i.e., lethality) for any one fitness component do show evidence for pleiotropy among accumulated mutations. We also report estimates of other parameters of mutation based on each component of fitness.
Disentangled topological numbers by a purification of entangled mixed states for non-interacting fermion systems
Creators: name: Fukui, T.
name: Hatsugai, Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We argue that the entanglement Chern number proposed recently is invariant under the adiabatic deformation of a gapped many-body groundstate into a {\it disentangled/purified} one, which implies a partition of the Chern number into subsystems (disentangled Chern number). We generalize the idea to another topological number, the Z$_2$ Berry phase for a system with particle-hole symmetry, and apply it to a groundstate in a weak topological phase where the Chern number vanishes but the groundstate nevertheless has edge states. This entanglement Berry phase is especially useful for characterizing random systems with nontrivial edge states.
description: 6 pages, 3 figures, final version. Open access article in JPSJ
Cooperation Between the Septins and the Actomyosin Ring and Role of a Cell-Integrity Pathway During Cell Division in Fission Yeast
Creators: name: Pollard, T. D.
name: Ye, Y.
name: Wu, J.-Q.
name: Wang, N.
name: Pringle, J. R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: A major question about cytokinesis concerns the role of the septin proteins, which localize to the division site in all animal and fungal cells but are essential for cytokinesis only in some cell types. For example, in Schizosaccharomyces pombe, four septins localize to the division site, but deletion of the four genes produces only a modest delay in cell separation. To ask if the S. pombe septins function redundantly in cytokinesis, we conducted a synthetic-lethal screen in a septin-deficient strain and identified seven mutations. One mutation affects Cdc4, a myosin light chain that is an essential component of the cytokinetic actomyosin ring. Five others cause frequent cell lysis during cell separation and map to two loci. These mutations and their dosage suppressors define a signaling pathway (including Rho1 and a novel arrestin) for repairing cell-wall damage. The seventh mutation affects the poorly understood RNA-binding protein Scw1 and severely delays cell separation when combined either with a septin mutation or with a mutation affecting the septin-interacting, anillin-like protein Mid2, suggesting that Scw1 functions in a pathway parallel to that of the septins. Taken together, our results suggest that the S. pombe septins participate redundantly in one or more pathways that cooperate with the actomyosin ring during cytokinesis and that a septin defect causes septum defects that can be repaired effectively only when the cell-integrity pathway is intact.
title: Plant community change in the Montgomeryshire Canal in relation to succession theory
Creators: name: J. Harris, C.
Publisher: name: University of Liverpool Repository
Year: 2023

description: The water physico-chemistry, hydrology and plant communities in the Montgomeryshire Canal were examined for evidence of successional phenomena over a five year period and comparisons were made with previous studies. Plant communities changed in a manner which suggested that classical successional ideas were applicable to canals. The changes were readily distinguishable when a period of twenty years had passed but as the examined period was decreased the complexity of the sequence became more apparent. In a single year there were changes in the plant communities. A later stage of succession was indicated as the number of changes increased and the available energy and habitat niches were filled. Succession did not take place in a slow orderly manner but progressed as a series of jumps when the plants were released from inhibitory factors. These sudden changes were promoted by changes in the habitat due to climatic variation, removal of grazers or alterations in the water level. Where the most important inhibitory factors were unchanging, the succession proceeded to a climax community decided by those factors. The physico-chemical factors affecting the canal changed during the study period. The canal became more acidic due to the effects of a cold wet spring. The underwater light climate in un-navigated lengths was determined more by the amount of shade upon the water surface than by any other factor. Levels of suspended solids were relatively unimportant. Established plant communities showed a great resistance to change, despite being subjected to traumatic perturbations. Skim dredging of a site with a well established community structure did not change the course of the succession, but removed inhibiting factors such as anoxic material or grazing and promoted a more rapid change to reedswamp. In the .long term falling water levels had the same effect as raising of the bottom due to infill, but in the two routes towards a less aquatic system were different. Infill led to a moving band of depth sensitive plants whilst loss of water encouraged rapid creation of a reedswamp. The study confirmed that limited navigation is not detrimental to the species composition or the productivity. Eutrophication was a limiting factor creating an unique climax community.
กลยุทธ์การบริหารวิชาการตามแนวคิดความเป็นพลเมืองดิจิทัล ของสถานศึกษาสังกัดสำนักงานเขตพื้นที่การศึกษาประถมศึกษาในจังหวัดนครราชสีมา
Creators: name: จุฬาลักษณ์ ยอดยิ่ง
Publisher: name: ศูนย์นวัตกรรมทางการศึกษา สื่อสิ่งพิมพ์ และสื่อออนไลน์ จุฬาลงกรณ์มหาวิทยาลัย
Year: 2566
Subjects: กลยุทธ์การบริหารงานวิชาการ
ความเป็นพลเมืองดิจิทัล

description: วารสารครุศาสตร์, 51, 1, EDUCU5101005 (13 pages)
Explaining $h\toμ^\pmτ^\mp$, $B\to K^* μ^+μ^-$ and $B\to K μ^+μ^-/B\to K e^+e^-$ in a two-Higgs-doublet model with gauged $L_μ-L_τ$
Creators: name: Crivellin, Andreas
name: D'Ambrosio, Giancarlo
name: Heeck, Julian
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The LHC observed so far three deviations from the Standard Model (SM) predictions in flavour observables: LHCb reported anomalies in $B\to K^* μ^+μ^-$ and $R(K)=B\to K μ^+μ^-/B\to K e^+e^-$ while CMS found an excess in $h\toμτ$. We show, for the first time, how these deviations from the SM can be explained within a single well-motivated model: a two-Higgs-doublet model with gauged $L_μ-L_τ$ symmetry. We find that, despite the constraints from $τ\toμμμ$ and $B_s$--$\overline{B}_s$ mixing, one can explain $h \toμτ$, $B\to K^* μ^+μ^-$ and $R(K)$ simultaneously, obtaining interesting correlations among the observables.
description: 6 pages, 2 figures, corrected formula for LFV tau decay with new HFAG limit. References added, accepted for publication in PRL
Evolution of a Distinct Genomic Domain in Drosophila: Comparative Analysis of the Dot Chromosome in Drosophila melanogaster and Drosophila virilis
Creators: name: Richner, J. M.
name: Itano, M. S.
name: Singhal, S.
name: McGaha, R.
name: Swope, C.
name: Falkowska, K.
name: Khan, S.
name: Lo, L.
name: Honeybourne, J.
name: Slawson Tempel, E. E.
name: Kellmann, E.
name: Chusak, T. M.
name: Buhler, J.
name: Carrasquillo, R.
name: Shaffer, C. D.
name: Shah, A.
name: Grim, K. D.
name: Sabin, L.
name: Desruisseau, D. M.
name: Song, F.
name: Sharma, A.
name: Richt, R.
name: Cordonnier, T.
name: Wilen, C. B.
name: Wong, J.
name: Plunkett, J.
name: Cain, C.
name: Leung, W.
name: Guan, R.
name: Mardis, E. R.
name: Elgin, S. C. R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: The distal arm of the fourth (“dot”) chromosome of Drosophila melanogaster is unusual in that it exhibits an amalgamation of heterochromatic properties (e.g., dense packaging, late replication) and euchromatic properties (e.g., gene density similar to euchromatic domains, replication during polytenization). To examine the evolution of this unusual domain, we undertook a comparative study by generating high-quality sequence data and manually curating gene models for the dot chromosome of D. virilis (Tucson strain 15010–1051.88). Our analysis shows that the dot chromosomes of D. melanogaster and D. virilis have higher repeat density, larger gene size, lower codon bias, and a higher rate of gene rearrangement compared to a reference euchromatic domain. Analysis of eight “wanderer” genes (present in a euchromatic chromosome arm in one species and on the dot chromosome in the other) shows that their characteristics are similar to other genes in the same domain, which suggests that these characteristics are features of the domain and are not required for these genes to function. Comparison of this strain of D. virilis with the strain sequenced by the Drosophila 12 Genomes Consortium (Tucson strain 15010–1051.87) indicates that most genes on the dot are under weak purifying selection. Collectively, despite the heterochromatin-like properties of this domain, genes on the dot evolve to maintain function while being responsive to changes in their local environment.
title: Electrical and optical properties of nitrogenated : hydrogenated : amorphous carbon thin films
Creators: name: Amith Indika. Munindradasa, Dedimuni
Publisher: name: University of Liverpool Repository
Year: 2023

description: The electronic and optical properties of hydrogenated amorphous carbon (a-C: H) and nitrogenated : hydrogenated amorphous carbon (a-C: H: N), deposited using inductively coupled plasma enhanced chemical vapour deposition (ICPECVD) and helicon wave excited plasma enhanced chemical vapour deposition (HWPECVD) are discussed in this thesis. The design and the implementation of the helicon wave excited plasma system is also presented. The capacitance voltage (C-V) characteristics of heterojunctions formed by depositing a-C: H: N on Si, show that almost ideal interface behaviour can be accomplished using ICPECVD for optimised plasma conditions. The highest frequency response, known to date for a-C, 13MHz, is also reported. The photoluminescence (PL) studies are carried out to investigate the influence of nitrogen in a-C: H: N. The nitrogen and the optical band gap dependencies of PL indicated the existence of N associated recombination centres. A twin recombination mechanism at localised tails and N associated centres is suggested to describe the observed behaviour. The capability of selective energy transitions in a helicon wave plasma as predicted theoretically is successfully demonstrated for N2 plasma. The passivation of high power electronic devices and the electron field emission are presented as potential areas where a-C: H and a-C: H: N perform successfully
title: Core inflation over the COVID-19 pandemic
Creators: name: Khan, Mikael
name: Sullivan, Elyse
Publisher: name: Bank of Canada
Year: 2022

description: We assess the usefulness of various measures of core inflation over the COVID-19 pandemic. We find that Cpi-trim and CPI-median provided the best signal of underlying inflation. The favourable performance of these measures stems from their lack of reliance on historical experience, an especially valuable feature in unprecedented times.
description: Nous évaluons l’utilité de plusieurs mesures de l’inflation fondamentale durant la pandémie de COVID-19. Nous constatons que l’IPC-tronq et l’IPC-méd ont été le baromètre le plus fiable de l’inflation sous-jacente. Si ces mesures ont fourni de bonnes indications, c’est parce qu’elles ne reposent pas sur des données historiques – une caractéristique particulièrement importante dans des circonstances inhabituelles.
Realizing strong light-matter interactions between single nanoparticle plasmons and molecular excitons at ambient conditions
Creators: name: Zengin, Gülis
name: Wersäll, Martin
name: Nilsson, Sara
name: Antosiewicz, Tomasz J.
name: Käll, Mikael
name: Shegai, Timur
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Realizing strong light-matter interactions between individual 2-level systems and resonating cavities in atomic and solid state systems opens up possibilities to study optical nonlinearities on a single photon level, which can be useful for future quantum information processing networks. However, these efforts have been hampered by the unfavorable experimental conditions, such as cryogenic temperatures and ultrahigh vacuum, required to study such systems and phenomena. Although several attempts to realize strong light-matter interactions at room-temperature using so-called plasmon resonances have been made, successful realizations on the single nanoparticle level are still lacking. Here, we demonstrate strong coupling between plasmons confined within a single silver nanoprism and excitons in molecular J-aggregates at ambient conditions. Our findings show that the deep subwavelength mode volumes, $V$, together with high quality factors, $Q$, associated with plasmons in the nanoprisms result in strong coupling figure-of-merit -- $Q/\sqrt{V}$ as high as $\sim6\times10^{3}$~$μ$m$^{-3/2}$ -- a value comparable to state-of-art photonic crystal and microring resonator cavities, thereby suggesting that plasmonic nanocavities and specifically silver nanoprisms can be used for room-temperature quantum optics.
Genomewide Multiple-Loci Mapping in Experimental Crosses by Iterative Adaptive Penalized Regression
Creators: name: Ibrahim, J. G.
name: Zou, F.
name: Sun, W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Genomewide multiple-loci mapping can be viewed as a challenging variable selection problem where the major objective is to select genetic markers related to a trait of interest. It is challenging because the number of genetic markers is large (often much larger than the sample size) and there is often strong linkage or linkage disequilibrium between markers. In this article, we developed two methods for genomewide multiple loci mapping: the Bayesian adaptive Lasso and the iterative adaptive Lasso. Compared with eight existing methods, the proposed methods have improved variable selection performance in both simulation and real data studies. The advantages of our methods come from the assignment of adaptive weights to different genetic makers and the iterative updating of these adaptive weights. The iterative adaptive Lasso is also computationally much more efficient than the commonly used marginal regression and stepwise regression methods. Although our methods are motivated by multiple-loci mapping, they are general enough to be applied to other variable selection problems.
Nonparametric Bayesian Variable Selection With Applications to Multiple Quantitative Trait Loci Mapping With Epistasis and Gene–Environment Interaction
Creators: name: Lee, Seunggeun
name: Zou, Fei
name: Huang, Hanwen
name: Hoeschele, Ina
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: The joint action of multiple genes is an important source of variation for complex traits and human diseases. However, mapping genes with epistatic effects and gene–environment interactions is a difficult problem because of relatively small sample sizes and very large parameter spaces for quantitative trait locus models that include such interactions. Here we present a nonparametric Bayesian method to map multiple quantitative trait loci (QTL) by considering epistatic and gene–environment interactions. The proposed method is not restricted to pairwise interactions among genes, as is typically done in parametric QTL analysis. Rather than modeling each main and interaction term explicitly, our nonparametric Bayesian method measures the importance of each QTL, irrespective of whether it is mostly due to a main effect or due to some interaction effect(s), via an unspecified function of the genotypes at all candidate QTL. A Gaussian process prior is assigned to this unknown function. In addition to the candidate QTL, nongenetic factors and covariates, such as age, gender, and environmental conditions, can also be included in the unspecified function. The importance of each genetic factor (QTL) and each nongenetic factor/covariate included in the function is estimated by a single hyperparameter, which enters the covariance function and captures any main or interaction effect associated with a given factor/covariate. An initial evaluation of the performance of the proposed method is obtained via analysis of simulated and real data.
ผลของการจัดการเรียนการสอนตามแนวคิดสะเต็มศึกษาที่เน้นกระบวนการออกแบบเชิงวิศวกรรมที่มีต่อสมรรถนะการแก้ปัญหาแบบร่วมมือของนักเรียนระดับมัธยมศึกษาตอนต้น สังกัดสำนักงานคณะกรรมการการอุดมศึกษา
Creators: name: จักรกฤต ภุชงค์ประเวศ
Publisher: name: ศูนย์นวัตกรรมทางการศึกษา สื่อสิ่งพิมพ์ และสื่อออนไลน์ จุฬาลงกรณ์มหาวิทยาลัย
Year: 2566
Subjects: สมรรถนะการแก้ปัญหาแบบร่วมมือ
สะเต็มศึกษา
กระบวนการออกแบบเชิงวิศวกรรม

description: วารสารครุศาสตร์, 51, 1, EDUCU5101006 (13 pages)
Can long-range interactions stabilize quantum memory at nonzero temperature?
Creators: name: Landon-Cardinal, Olivier
name: Yoshida, Beni
name: Poulin, David
name: Preskill, John
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A two-dimensional topologically ordered quantum memory is well protected against error if the energy gap is large compared to the temperature, but this protection does not improve as the system size increases. We review and critique some recent proposals for improving the memory time by introducing long-range interactions among anyons, noting that instability with respect to small local perturbations of the Hamiltonian is a generic problem for such proposals. We also discuss some broader issues regarding the prospects for scalable quantum memory in two-dimensional systems.
description: Title differs from published version as PRA does not allow interrogative titles
EOSC IF Interoperability Guideline: Access to content via PID
Creators: name: Bardi, Alessia
name: Manghi, Paolo
name: Gonzalez Lopez, Jose Benito
name: Ariyo, Chris
name: Czerniak, Andreas
name: van Dongen, Paul Gondim
name: Kakaletris, Georgios
name: Palma, Raul
name: Peroni, Silvio
name: van Piggelen, Hans
name: van de Sanden, Mark
name: Scardaci, Diego
name: Schirrwagen, Jochen
name: Testi, Debora
name: Tournoy, Raphaël
name: Vipavc, Irena
name: Grbac, Deborah
name: Enell, Carl-Fredrik
name: Aben, Guido
name: Heibi, Ivan
name: van Kemenade, Jorik
Publisher: name: Zenodo
Year: 2023
Subjects: EOSC
Interoperability guidelines
Open Science

description: An important aspect of Open Science is the possibility to re-use existing research products (e.g. research data), deposited in repositories and accessible via their persistent identifiers (e.g. handle, doi, ark). However, there is no standard way a service can access the actual content behind persistent identifiers, as these typically resolve to the landing pages of the research products. The lack of standard for accessing the actual content identified by persistent identifiers makes the automatic consumption of research products hardly implementable and, when possible, limited to the persistent identifiers issued by a specific repository (e.g. the first prototype of the EGI Data Transfer Service integrated in the EOSC EXPLORE portal supported only DOIs from Zenodo). The EOSC Future Working Group on Research Product Publishing proposes the adoption of the Publication Boundary Pattern of the SignPosting protocol and recomends it for inclusion as interoperability guideline in the EOSC IF.
description: The guidelines are proposed by the EOSC Future Working Group on "Research Product Publishing".
QIP, a Protein That Converts Duplex siRNA Into Single Strands, Is Required for Meiotic Silencing by Unpaired DNA
Creators: name: Perdue, Tony D.
name: Alexander, William G.
name: Xiao, Hua
name: Hammond, Thomas M.
name: Shiu, Patrick K. T.
name: Pukkila, Patricia J.
name: Boone, Erin C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: RNA interference (RNAi) depends on the production of small RNA to regulate gene expression in eukaryotes. Two RNAi systems exist to control repetitive selfish elements in Neurospora crassa. Quelling targets transgenes during vegetative growth, whereas meiotic silencing by unpaired DNA (MSUD) silences unpaired genes during meiosis. The two mechanisms require common RNAi proteins, such as RNA-directed RNA polymerases, Dicers, and Argonaute slicers. We have previously demonstrated that, while Quelling depends on the redundant dicer activity of DCL-1 and DCL-2, only DCL-1 is required for MSUD. Here, we show that QDE-2-interacting protein (QIP), an exonuclease that is important for the production of single-stranded siRNA during Quelling, is also required for MSUD. QIP is crucial for sexual development and is shown to colocalize with other MSUD proteins in the perinuclear region.
$Om$ diagnostic applied to scalar field models and slowing down of cosmic acceleration
Creators: name: Shahalam, M.
name: Sami, Sasha
name: Agarwal, Abhineet
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We apply the $Om$ diagnostic to models for dark energy based on scalar fields. In case of the power law potentials, we demonstrate the possibility of slowing down the expansion of the Universe around the present epoch for a specific range in the parameter space. For these models, we also examine the issues concerning the age of Universe. We use the $Om$ diagnostic to distinguish the $Λ$CDM model from non minimally coupled scalar field, phantom field and generic quintessence models. Our study shows that the $Om$ has zero, positive and negative curvatures for $Λ$CDM, phantom and quintessence models respectively. We use an integrated data base (SN+Hubble+BAO+CMB) for bservational analysis and demonstrate that $Om$ is a useful diagnostic to apply to observational data.
description: 13 pages, Latex style, 11 figures, 5 tables, Accepted for publication in MNRAS
การเปรียบเทียบระบบใบอนุญาตประกอบวิชาชีพครูในประเทศไทยและต่างประเทศ
Creators: name: ธีรภัทร กุโลภาส
Publisher: name: ศูนย์นวัตกรรมทางการศึกษา สื่อสิ่งพิมพ์ และสื่อออนไลน์ จุฬาลงกรณ์มหาวิทยาลัย
Year: 2566
Subjects: ระบบการผลิตครู
ใบอนุญาตประกอบวิชาชีพครู
การศึกษาเปรียบเทียบ

description: วารสารครุศาสตร์, 51, 1, EDUCU5101007 (15 pages)
Reference results for time-like evolution up to $\mathcal{O}(α_s^3)$
Creators: name: Bertone, Valerio
name: Carrazza, Stefano
name: Nocera, Emanuele R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present high-precision numerical results for time-like Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution in the $\bar{\rm MS}$ factorisation scheme, for the first time up to next-to-next-to-leading order accuracy in quantum chromodynamics. First, we scrutinise the analytical expressions of the splitting functions available in the literature, in both x and N space, and check their mutual consistency. Second, we implement time-like evolution in two publicly available, entirely independent and conceptually different numerical codes, in x and N space respectively: the already existing APFEL code, which has been updated with time-like evolution, and the new MELA code, which has been specifically developed to perform the study in this work. Third, by means of a model for fragmentation functions, we provide results for the evolution in different factorisation schemes, for different ratios between renormalisation and factorisation scales and at different final scales. Our results are collected in the format of benchmark tables, which could be used as a reference for global determinations of fragmentation functions in the future.
description: 28 pages, 5 figures, 36 tables. Final version, matches published version in JHEP. Program available from http://apfel.hepforge.org/
Mid-term review of selected projects
Creators: name: Krizan, Peter
Publisher: name: Zenodo
Year: 2023
Subjects: WP13

description: This WP pays tribute to the fact that disruptive advances in particle detectors have often been made possible thanks to developments that had not originally been driven by requirements of specific experiments, but which advanced the intrinsic limits of existing technologies, often in synergy with other fields and industries (Blue-Sky research). The four key projects, which were chosen in December 2021, shortly after the start of AIDAinnova in a competitive selection procedure, have been reviewed mid-term. This milestone reports the status of the projects.
Bosonization in the path integral formulation
Creators: name: Fujikawa, Kazuo
name: Suzuki, Hiroshi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We establish the direct $d=2$ on-shell bosonization $ψ_{L}(x_{+})=e^{iξ(x_{+})}$ and $ψ_{R}^{\dagger}(x_{-})=e^{iξ(x_{-})}$ in path integral formulation by deriving the off-shell relations $ψ_{L}(x)ψ_{R}^{\dagger}(x)=\exp[iξ(x)]$ and $ψ_{R}(x)ψ_{L}^{\dagger}(x)=\exp[-iξ(x)]$. Similarly, the on-shell bosonization of the bosonic commuting spinor, $ϕ_{L}(x_{+})=ie^{-iξ(x_{+})}\partial^{+}e^{-iχ(x_{+})}$, $ϕ^{\dagger}_{R}(x_{-})=e^{-iξ(x_{-})-iχ(x_{-})}$ and $ϕ_{R}(x_{-})=ie^{iξ(x_{-})}\partial^{-}e^{+iχ(x_{-})}$, $ϕ^{\dagger}_{L}(x_{+})=e^{iξ(x_{+})+iχ(x_{+})}$, is established in path integral formulation by deriving the off-shell relations $ϕ_{L}(x)ϕ^{\dagger}_{R}(x)=ie^{-iξ(x)}\partial^{+}e^{-iχ(x)}$ and $ϕ_{R}(x)ϕ^{\dagger}_{L}(x)=ie^{iξ(x)}\partial^{-}e^{iχ(x)}$.
description: 18 pages, the final version to appear in Phys. Rev. D
Thermodynamics of charged Lifshitz black holes with quadratic corrections
Creators: name: Bravo-Gaete, Moises
name: Hassaine, Mokhtar
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In arbitrary dimension, we consider the Einstein-Maxwell Lagrangian supplemented by the more general quadratic-curvature corrections. For this model, we derive four classes of charged Lifshitz black hole solutions for which the metric function is shown to depend on a unique integration constant. The masses of these solutions are computed using the quasilocal formalism based on the relation established between the off-shell ADT and Noether potentials. Among these four solutions, three of them are interpreted as extremal in the sense that their mass vanishes identically. For the last family of solutions, the quasilocal mass and the electric charge both are shown to depend on the integration constant. Finally, we verify that the first law of thermodynamics holds for each solution and a Smarr formula is also established for the four solutions.
description: 9 pages. References added
Quantification of Entanglement Entropies for Doubly Excited States in Helium
Creators: name: Lin, Chien-Hao
name: Ho, Yew Kam
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this work, we study the quantum entanglement for doubly excited resonance states in helium by using highly correlated Hylleraas type functions to represent such states of the two-electron system. The doubly-excited resonance states are determined by calculation of density of resonance states under the framework of the stabilization method. The spatial (electron-electron orbital) entanglement measures for the low-lying doubly excited 2s2, 2s3s, and 2p2 1Se states are carried out. Once a resonance state wave function is obtained, the linear entropy and von Neumann entropy for such a state are quantified using the Schmidt-Slater decomposition method. To check the consistence, linear entropy is also determined by solving analytically the needed four-electron (12-dimensional) integrals.
description: Final version to be published in Few-Body Systems; Minor changes made and some typo errors corrected
Bayesian Multiple Quantitative Trait Loci Mapping for Recombinant Inbred Intercrosses
Creators: name: Zou, Fei
name: Yuan, Zhongshang
name: Liu, Yanyan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: The Collaborative Cross (CC) is a renewable mouse resource that mimics the genetic diversity in humans. The recombinant inbred intercrosses (RIX) generated from CC recombinant inbred (RI) lines share similar genetic structures to those of F2 individuals. In contrast to F2 mice, genotypes of RIX can be inferred from the genotypes of their RI parents and can be produced repeatedly. Also, RIX mice do not typically share the same degree of relatedness. This unbalanced genetic relatedness requires careful statistical modeling to avoid a large number of false positive findings. For complex traits, mapping multiple genes simultaneously is arguably more powerful than mapping one gene at a time. In this article, we describe how we have developed a Bayesian quantitative trait locus (QTL) mapping method that simultaneously deals with the special genetic architecture of RIX and maps multiple genes. The performance of the proposed method is evaluated by extensive simulations. In addition, for a given set of RI lines, there are numerous ways to generate RIX samples. To provide a general guideline on future RIX studies, we compare several RIX designs through simulations.
การเสริมสร้างคุณลักษณะพลเมืองตื่นรู้ของผู้เรียนโดยการตั้งคำถามแบบโสเครติส
Creators: name: วรินทร สิริพงษ์ณภัทร
Publisher: name: ศูนย์นวัตกรรมทางการศึกษา สื่อสิ่งพิมพ์ และสื่อออนไลน์ จุฬาลงกรณ์มหาวิทยาลัย
Year: 2566
Subjects: พลเมืองตื่นรู้
การคิดเชิงวิพากษ์
คำถามแบบโสเครติส
พุทธพิสัย

description: วารสารครุศาสตร์, 51, 1, EDUCU5101008 (13 pages)