cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Can curriculum design influence medical students’ attitudes to psychiatry? A comparison of two different approaches
Creators: name: Cates, Angharad N. De
name: Cates, Paul De
name: Swaran P. Singh
name: Marwaha, Steven
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Biotechnology
Science Policy

description: Medical students with poor attitudes toward psychiatry are unlikely to choose it as a career, and current psychiatry recruitment is inadequate for future NHS needs. Amending medical school curricula has been suggested as one solution. We performed a unique naturalistic mixed-methods cross-sectional survey of two sequential cohorts in a UK medical school, before and after the restructuring of the entire MBChB curriculum. As well as increasing integration with other specialties, the emphasis placed on psychiatry increased throughout the course, but the final psychiatry block reduced from 8 to 6 weeks. Students experiencing the refreshed curriculum had better attitudes to psychiatry and psychiatric patients and were more positive about psychiatry as a career for themselves and others, compared to students on the old curriculum. This was demonstrated both quantitatively using validated rating scales (12/30 questions ATP-30 and 1/6 questions PEAK-6) and qualitatively using free-text responses. Restructuring undergraduate medical curricula to enhance integration may yield added value, including the potential to improve attitudes to specialties previously learned in silos, such as psychiatry. This may improve recruitment and the understanding of mental health for all future doctors.
Identifying central tenets needed in our education systems: Results from a pilot integrated clinical apprenticeship
Creators: name: Simpkin, Arabella L.
name: McKeown, Andrew
name: Parekh, Ravi
name: Kumar, Sonia
name: Tudor-Williams, Gareth
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Purpose: The ability of healthcare systems to deliver world-class compassionate care depends on the quality of training and education of staff. Matching student-centered learning with patient-centered care is the focus for much curricula reform. This study explores the effect a novel longitudinal curriculum had on medical students’ attitudes and experiences to better identify central tenets needed in our education system. Methods: Single-center, qualitative focus-group study conducted in 2017 of medical students in a longitudinally integrated clinical apprenticeship at a large UK medical school. Students were randomly assigned to focus groups to describe their educational journey and explore how longitudinal learning prepared them for a medical career, valuing their unique position as student participants in the healthcare system. Results: Four themes emerged from students’ experiences: navigating the patient journey, their professional development, their learning journey, and the healthcare system. Conclusions: Listening to student voices lends insights for educators refining educational models to produce doctors of tomorrow. This project identified the educational value of students having authentic roles in helping patients navigate the healthcare system and the benefits of consistent mentorship and greater autonomy. The gulf between gaining skills as a future doctor and gaining skills to pass summative exams calls into question assessment methods.
Mean Transverse Energy of Ultrananocrystalline Diamond Photocathode
Creators: name: Chen, Gongxiaohui
name: Adhikari, Gowri
name: Spentzious, Linda
name: Kovi, Kiran Kumar
name: Antipov, Sergey
name: Jing, Chunguang
name: Schroeder, W. Andreas
name: Baryshev, Sergey V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Nitrogen incorporated ultrananocrystalline diamond ((N)UNCD) could be an enabling material platform for photocathode applications due to its high emissivity. While the quantum efficiency (QE) of UNCD was reported by many groups, no experimental measurements of the intrinsic emittance/mean transverse energy (MTE) have been reported. Here, MTE measurement results for an (N)UNCD photocathode in the photon energy range of 4.41 to 5.26 eV are described. The MTE demonstrates no noticeable dependence on the photon energy, with an average value of 266 meV. This spectral behavior is shown to not to be dependent upon physical or chemical surface roughness and inconsistent with low electron effective mass emission from graphitic grain boundaries, but may be associated with emission from spatially-confined states in the graphite regions between the diamond grains. The combined effect of fast-growing QE and constant MTE with respect to the excess laser energy may pave the way to bright UNCD photocathodes.
description: 4 pages, 4 figures
Turkey under Emergency Rule: Politicized Terrorism Prosecutions and Criminalized Dissent
Creators: Zingg, Genevieve
Publisher: name: Columbia University
Year: 2018
Subjects: International law and human rights
Human rights
Terrorism
Dissenters
Punishment--Public opinion
Authoritarianism

description: In July 2016, a failed​ coup d'état p​lunged Turkey into a nationwide state of emergency. Despite its recent status as a model for democratization in the Middle East, Turkey has veered dangerously towards authoritarianism under emergency rule. The state of emergency has empowered Turkish President Recep Tayyip Erdoğan to bypass parliament and pass sweeping new anti-terror laws by executive decree. Under the international legal framework, the state of emergency has further allowed Turkey to suspend its human rights obligations as a states party to the European Convention on Human Rights and the International Covenant on Civil and Political Rights. Turkey’s emergency counterterrorism laws and policies have increasingly been used to target dissident journalists, academics, human rights activists and members of the political opposition and prosecute them on heavily politicized and trumped-up terrorism charges. Using the current situation in Turkey as its chief case study, this paper asks two central questions. First, it examines how the state of emergency has facilitated human rights abuses, finding that freedom of expression has been criminalized by emergency counterterrorism decrees and further led to increased risks of torture against detained dissidents. Second, this paper investigates what role international human rights law plays and how the existing framework might be improved to better strengthen human rights protections during emergencies. It finds that the efficacy of monitoring and accountability mechanisms are significantly hindered by political, strategic, and economic relations, but argues that those same factors can be used as leverage against repressive states. Finally, Turkey’s cross-border efforts to hunt and capture dissidents, which have included the use and abuse of international policing systems, bilateral extradition treaties, and state-sponsored abductions, reveals a key opportunity for international human rights law to respond to the troubling impacts of counterterrorism on human rights.
title: Untersuchungen zur Regelfähigkeit von brandschutztechnischen Nachweisen im Rahmen von KTA 2101.2: Ermittlung effektiver Heizwerte / von D. Hosser, G. Blume, W. Siegfried, J. Will
Creators: name: Hosser, Dietmar
name: Blume, Gary
name: Siegfried, W.
name: Will, Jürgen
Publisher: name: grm, Merkel
Year: 1998
Subjects: subject: Forschungsbericht, IBMB, Brandschutz
subject: 620

description: Schriftenreihe Reaktorsicherheit und Strahlenschutz: Ergebnisberichte, Untersuchungen, Studien, Gutachten, vol. 526
Hipposideros commersonii
Creators: name: Foley, Nicole M.
name: Goodman, Steven M.
name: Whelan, Conor V.
name: Puechmaille, Sebastien J.
name: Teeling, Emma
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Hipposideridae
Hipposideros
Hipposideros commersonii

description: neotype of H. commersonii
(FMNH 175972)
description: Published as part of Foley, Nicole M., Goodman, Steven M., Whelan, Conor V., Puechmaille, Sebastien J. & Teeling, Emma, 2017, Towards Navigating the Minotaur's Labyrinth: Cryptic Diversity and Taxonomic Revision within the Speciose Genus Hipposideros (Hipposideridae), pp. 1-18 in Acta Chiropterologica 19 (1) on page 3, DOI: 10.3161/15081109acc2017.19.1.001, http://zenodo.org/record/6822104
Stability of multi-hump optical solitons
Creators: name: Ostrovskaya, Elena A.
name: Kivshar, Yuri S.
name: Skryabin, Dmitry V.
name: Firth, William J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We demonstrate that, in contrast with what was previously believed, multi-hump solitary waves can be stable. By means of linear stability analysis and numerical simulations, we investigate the stability of two- and three-hump solitary waves governed by incoherent beam interaction in a saturable medium, providing a theoretical background for the experimental results reported by M. Mitchell, M. Segev, and D. Christodoulides [Phys. Rev. Lett. v. 80, p. 4657 (1998)].
description: 4 pages, 5 figures, to appear in PRL
Wave scattering by small bodies of arbitrary shapes
Creators: name: Ramm, A. G.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 65J10, 65R20, 78A45

description: In this paper we review the results of the author on the theory of scalar and vector wave scattering by small bodies of an arbitrary shape with the emphasis on practical applicability of the formulas obtained and on the mathematical rigor of the theory. For the scalar wave scattering by a single body, our main results can be described as follows: (1) Analytical formulas for the scattering amplitude for a small body of an arbitrary shape are obtained; dependence of the scattering amplitude on the boundary conditions is described. (2) An analytical formula for the scattering matrix for electromagnetic wave scattering by a small body of an arbitrary shape is given. Applications of these results are outlined (calculation of the properties of a rarefied medium; inverse radio measurement problem; formulas for the polarization tensors and capacitance). (3) The multi-particle scattering problem is analyzed and interaction of the scattered waves is taken into account. For the self-consistent field in a medium consisting of many particles ~ 10^{23}, integral-differential equations are found. The equations depend on the boundary conditions on the particle surfaces. These equations offer a possibility of solving the inverse problem of finding the medium properties from the scattering data. For about 5 to 10 bodies the fundamental integral equations of the theory can be solved numerically to study the interaction between the bodies.
description: 11pp
Additional file 7 of Alternative approaches to standard inpatient mental health care: development of a typology of service models
Creators: name: Griffiths, Jessica L.
name: Baldwin, Helen
name: Vasikaran, Jerusaa
name: Jarvis, Ruby
name: Pillutla, Ramya
name: Saunders, Katherine R. K.
name: Cooper, Ruth E.
name: Foye, Una
name: Rains, Luke Sheridan
name: Lusted-Challen, Molly
name: Barnett, Phoebe
name: Brennan, Geoff
name: Pryjmachuk, Steven
name: Newbigging, Karen
name: Lomani, Jo
name: Olive, Rachel Rowan
name: Mitchell, Lizzie
name: Nyikavaranda, Patrick
name: Lynch, Chris
name: Persaud, Karen
name: Lloyd-Evans, Brynmor
name: Simpson, Alan
name: Johnson, Sonia
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Material 7
Extended phase-matching conditions for improved entanglement generation
Creators: name: Giovannetti, Vittorio
name: Maccone, Lorenzo
name: Shapiro, Jeffrey H.
name: Wong, Franco N. C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Extended phase-matching conditions for spontaneous parametric down-conversion are examined. By augmenting the conventional phase-matching conditions, they permit the creation of a class of frequency-entangled states that generalizes the usual twin-beam biphoton state. An experimental characterization of these states is possible through interferometric coincidence counting.
description: 9 pages, 6 figures. Revised version
Hipposideros cryptovalorona Goodman et al. 2016
Creators: name: Foley, Nicole M.
name: Goodman, Steven M.
name: Whelan, Conor V.
name: Puechmaille, Sebastien J.
name: Teeling, Emma
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Hipposideridae
Hipposideros
Hipposideros cryptovalorona

description: holotype of H. cryptovalorona
(FMNH 175970).
description: Published as part of Foley, Nicole M., Goodman, Steven M., Whelan, Conor V., Puechmaille, Sebastien J. & Teeling, Emma, 2017, Towards Navigating the Minotaur's Labyrinth: Cryptic Diversity and Taxonomic Revision within the Speciose Genus Hipposideros (Hipposideridae), pp. 1-18 in Acta Chiropterologica 19 (1) on page 3, DOI: 10.3161/15081109acc2017.19.1.001, http://zenodo.org/record/6822104
Robust switching of superposition-states via a coherent double stimulated Raman adiabatic passage
Creators: name: Yan, Luyao
name: Ma, Dandan
name: Yu, Dongmin
name: Qian, Jing
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Coherent manipulation of quantum states is of crucial importance in accurate control of a quantum system. A fundamental goal is coherently transferring the population of a desired state with near-unit fidelity. For this propose, we theoretically demonstrate a novel coherent double-stimulated Raman adiabatic passage (STIRAP) in a three-level $Λ$-type system for realizing the switch of unequal initial preparations on two ground states. This operation uses single optical pulse sequence accomplishing both bright-STIRAP and dark-STIRAP process, in which the intermediate-level detuning and the pulse delay must be given an optimal adjustment. Besides, owing to the imperfection of double-STIRAP transition, the sensitivity of the switch fidelity with respect to the spontaneous loss from the intermediate state, to the pulse amplitude and to the population difference, are also discussed. This work suggests a simple and experimentally-feasible all-optical approach to switch the superposition quantum state, serving as one-step closer to the goal of coherent manipulation of quantum systems.
description: 7 pages, 6 figures,to appear in JOSAB
Propagation of gravitational waves from slow motion sources in a Coulomb type potential
Creators: name: Asada, Hideki
name: Futamase, Toshifumi
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the propagation of gravitational waves generated by slow motion sources in Coulomb type potential due to the mass of the source. Then, the formula for gravitational waveform including tail is obtained in a straightforward manner by using the spherical Coulomb function. We discuss its relation with the formula in the previous work.
description: 13 pages, no figures, to be published in Phys. Rev. D
Tunable SU(4) Symmetry in Bilayer Graphene
Creators: Maher, Patrick Thomas
Publisher: name: Columbia University
Year: 2015
Subjects: Physics

description: The charge carriers in bilayer graphene have both spin and valley degeneracy. Because of its unique electronic structure, valley symmetry in this material is connected to layer symmetry, which can be broken experimentally with a transverse electric field. Together with the coupling of spin to external magnetic fields, bilayer graphene makes for an experimental system with a tunable SU(4) symmetry space. This thesis describes experiments performed on ultra-high-quality dual-gated bilayer graphene heterostructures. In the quantum Hall regime, electric and magnetic fields can be used to probe the ordering of ground states, and to induce new orderings. In particular, at charge neutrality and high Zeeman splitting, we are able to tune the system to a ferromagnetic phase which exhibits a crossing of oppositely spin-polarized edge states, mimicking the quantum spin Hall effect. At higher fields in cleaner samples, we observe fractional quantum Hall states. These states also exhibit phase transitions, which show a clear but non-trivial connection with the phase transitions observed in integer quantum Hall states. In higher Landau levels, while the connection between layer and valley changes, we still observe phase transitions between different quantum Hall states by applying transverse displacement fields. We identify clear patterns in these phase transitions over a number of Landau levels. Finally, we present experiments on bilayer graphene with an aligned split-gate geometry. This system is predicted to support topologically-protected valley-polarized states. We discuss fabrication challenges and preliminary experimental results.
Gluconic acid promoted cascade reactions of 2-phenylimidazo[1,2-a] pyridine-3-carbaldehyde with cyclohexane-1,3-dione to create novel fused bisheterocycles
Creators: name: Chetananda Patel
name: Thakur, Ashima
name: Pereira, Gavin
name: Sharma, Abha
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Here in, we described the synthesis of novel bisheterocycles imidazopyridine bearing xanthenedione by reacting various substituted 2-phenylimidazo [1,2-a] pyridine-3-carbaldehyde with cyclohexane-1,3-dione in gluconic acid aqueous solution (GAAS) via a tandem Knoevenagel followed by Michael, cyclization & tautomerization sequence. The use of GAAS in organic synthesis offers significant benefits like cost-effective, simple operation, reusable catalyst and green method. The reaction completed in 2–12 h to afford white stable solid compounds with very good yield. The structures of the compounds are confirmed by analyzing MS, IR, 1H NMR and 13C NMR spectra. Further, the structure of compound 3 h was confirmed by XRD analysis.
Additional file 3 of Incorporating the voice of young people in mental health research: reflections from three lived experience advisory panels in Latin America
Creators: name: Hidalgo-Padilla, Liliana
name: Ramirez-Meneses, Daniela
name: Ariza-Salazar, Karen
name: Lucchetti, Santiago Cesar
name: Olivar, Natividad
name: Stanislaus Sureshkumar, Diliniya
name: Fung, Catherine
name: Brusco, Luis Ignacio
name: Gómez-Restrepo, Carlos
name: Uribe-Restrepo, José Miguel
name: Priebe, Stefan
name: Diez-Canseco, Francisco
Publisher: name: figshare
Year: 2025
Subjects: Medicine
Science Policy
Mental Health

description: Supplementary Material 3
New examples of sandwich gravitational waves and their impulsive limit
Creators: name: Podolsky, J.
name: Vesely, K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Non-standard sandwich gravitational waves are constructed from the homogeneous pp vacuum solution and the motions of free test particles in the space-times are calculated explicitly. They demonstrate the caustic property of sandwich waves. By performing limits to impulsive gravitational wave it is demonstrated that the resulting particle motions are identical regardless of the ''initial'' sandwich.
description: 9 pages, to be published in Czech. J. Phys
Optical spectroscopic and polarization properties of 2011 outburst of the recurrent nova T Pyxidis
Creators: name: Pavana, M.
name: Anche, Ramya M
name: Anupama, G. C.
name: Ramaprakash, A. N.
name: Selvakumar, G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the spectroscopic and ionized structural evolution of T Pyx during its 2011 outburst, and also study the variation in degree of polarization during its early phase. Optical spectroscopic data of this system obtained from day 1.28--2415.62 since discovery, and optical, broadband imaging polarimetric observations obtained from day 1.36--29.33 during the early phases of the outburst are used in the study. The physical conditions and the geometry of the ionized structure of the nova ejecta has been modelled for a few epochs using the photo-ionization code, CLOUDY in 1D and pyCloudy in 3D. The spectral evolution of the nova ejecta during its 2011 outburst is similar to that of the previous outbursts. The variation in the line profiles is seen very clearly in the early stages due to good coverage during this period. The line profiles vary from P-Cygni (narrower, deeper and sharper) to emission profiles which are broader and structured, which later become narrower and sharper in the late post-outburst phase. The average ejected mass is estimated to be $7.03\, \times\, 10^{-6}\, M_{\odot}$. The ionized structure of the ejecta is found to be a bipolar conical structure with equatorial rings, with a low inclination angle of $14.75^\circ\, \pm\, 0.65^\circ$.
description: 14 pages, 12 figures, accepted in A&A
Turnaround as an Experience: Using School Culture and Climate as the Driver for School Turnaround
Creators: Whyte, Paul Andrew
Publisher: name: Columbia University
Year: 2018
Subjects: Educational leadership
Educational change
School management and organization
Educational planning

description: The number of schools failing to prepare students for post-secondary life continues to increase; thus, school reform continues to be a pressing concern. Millions of dollars have been spent on school reform initiatives, particularly comprehensive reform such as complete school turnaround. Turnaround efforts include full closure, restarts, and transformation of schools that are currently failing. School turnaround requires the immediate disruption of past practices to establish new practices. These changes require the development of new habits of mind, a refocus on expectations and a re-examination of adult-adult, adult-student, and student-student relationships. For stakeholders, school turnaround is viewed as what happens to them rather than what happens for their benefit. The stakeholders who are the students and teachers within the school are affected in numerous ways by the disruption.
      This study reviewed literature on turnaround endeavors and pinpointed the important organizational design, traits of leadership, culture and climate, and adult actions that can be leveraged to create comprehensive school turnaround that is sustainable. The findings of this study resulted in the development of a handbook that provides school turnaround leaders with the tools to design a comprehensive turnaround program. This Turnaround Handbook is built on the premise of stabilizing culture and climate within the school to drive change practices that lead to school success. This handbook takes into account the needs of students to have a voice, adults to be supported and developed, and practices to be sustained beyond a finite period of classification as a turnaround school. The significance of this research is that school turnaround leaders can design programs that are sustainable and can significantly improve the lives and educational experiences of those affected by the reform process.
Mary Vasey Gage apartments water consumption analysis
Creators: name: Vasey, Mary
Publisher: name: The University of British Columbia
Year: 2015

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
The Epistemic virtues of a teacher
Creators: name: Clemente, Noel
Publisher: name: Macquarie University
Year: 2024
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: The overlap between virtue epistemology and the philosophy of education has been dominated by discussions of the epistemic qualities of good learners, that is, the epistemic virtues that must be nurtured in students. Not much has been said about the epistemic qualities of good teachers expressed in virtue-theoretic terms. In this thesis, I provide two accounts of what we can call “pedagogical virtues,” the epistemic excellences of the teacher insofar as she is a teacher, and not just a generic epistemic agent. In Part I, I focus on pedagogical virtues aimed towards the students’ knowledge acquisition. I propose a preliminary account based on both Battaly’s pluralist notion of intellectual virtues and Kawall’s concept of other-regarding epistemic virtues. I then give some examples of how pedagogical virtues under this account differ from mainstream intellectual virtues. I also confront the challenge of epistemic situationism which threatens virtue epistemology in general, and to the extent that it could threaten this account. From this defense, I give additional examples of pedagogical virtues that arise from the situationist problem. In Part II, I turn to intellectual character education where intellectual virtues are cultivated in students. Here I discuss the epistemic virtues of an excellent intellectual-character educator. I do this by going through the different components of teaching intellectual virtues, and naming the pedagogical virtues of the teacher that helps her students grow in their intellectual virtue. I also answer questions such as: to what extent can we expect a teacher to be a model of intellectual virtue to her students? From these accounts of pedagogical virtues, I hope to motivate the development of the teacher’s intellectual character as an approach to improving student learning.
One pot, three component synthesis of spiroindenoquinoxaline pyrrolidine fused nitrochromene derivatives following 1,3-dipolar cycloaddition
Creators: name: Sabita Nayak
name: Priyabrata Pattanaik
name: Seetaram Mohapatra
name: Mishra, Deepak Ranjan
name: Pravati Panda
name: Bishnuprasad Raiguru
name: Nilima Priyadarshini Mishra
name: Subhrakant Jena
name: Himansu Sekhar Biswal
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: An expedient one-pot sequential three-component synthesis of a series of diverse spiroindenoquinoxaline pyrrolidine fused nitrochromene derivatives following 1,3-dipolar cycloaddition of azomethine ylides generated in situ by the condensation of indenoquinoxalone and α-amino acids (L-proline and L-phenyl alanine) with 3-nitrochromenes as dipolarophile under classical as well as microwave irradiation is described. The protocol provides a mild reaction condition, high yield of the products, high regioselectivity, and operational simplicity to assemble complex structural entity in a single operation with good to excellent yield. The regio and stereochemical outcome of the cycloaddition reaction is ascertained by spectroscopic and single crystal X-ray analysis.
Turning Towards a Life of Spirit: The Disruption of Economic Logic in the Vitae of Christina of Markyate and Wulfric of Haselbury, Anchorites
Creators: Stater, Megan E.
Publisher: name: Columbia University
Year: 2016
Subjects: Hagiography
Hermits
Religion
Biography

description: Senior thesis on the two twelfth-century hagiographies of Christina of Markyate and Wulfric of Haselbury, both anchorites. Focuses on the tension between the social function and simultaneous social disruption of the anchorite, particularly through the use of economic logic throughout both hagiographies.
Metallic interfaces in a CaTiO$_3$/LaTiO$_3$ heterostructure
Creators: name: Xiao, Shaozhu
name: Wen, Fangdi
name: Liu, Xiaoran
name: Kareev, M.
name: Song, Yang
name: Zhang, Ruyi
name: Pei, Yujuan
name: Bi, Jiachang
name: He, Shaolong
name: Cao, Yanwei
name: Chakhalian, Jak
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Almost all oxide two-dimensional electron gases are formed in SrTiO$_3$-based heterostructures and the study of non-SrTiO$_3$ systems is extremely rare. Here, we report the realization of a two-dimensional electron gas in a CaTiO$_3$-based heterostructure, CaTiO$_3$/LaTiO$_3$, grown epitaxially layer-by-layer on a NdGaO$_3$ (110) substrate via pulsed laser deposition. The high quality of the crystal and electronic structures are characterized by in-situ reflection high-energy electron diffraction, X-ray diffraction, and X-ray photoemission spectroscopy. Measurement of electrical transport validates the formation of a two-dimensional electron gas in the CaTiO$_3$/LaTiO$_3$ superlattice. It is revealed the room-temperature carrier mobility in CaTiO$_3$/LaTiO$_3$ is nearly 3 times higher than in CaTiO$_3$/YTiO$_3$, demonstrating the effect of TiO$_6$ octahedral tilts and rotations on carrier mobility of two-dimensional electron gases. Due to doped CaTiO$_3$ being an A-site polar metal, our results provide a new route to design novel A-site two-dimensional polar metals.
Tuskegee, Achimota and the Construction of Black Transcultural Identity
Creators: Newkirk, Pamela
Publisher: name: Columbia University
Year: 2012
Subjects: Education
Blacks
History

description: Over the past four decades numerous scholars from a diverse range of fields, including history and comparative education, have turned to the transfer of the Hampton-Tuskegee model from the United States South to British colonial Africa to explore issues of global educational transfer and borrowing; nation-building; character education; and British colonial education policies. The primary goal of my dissertation is to consider this instance of educational transfer as a means of exploring the broader issues of black transcultural identity and black agency in education policy formation and implementation in the U.S. and in the Gold Coast. The two black actors who figure prominently in this case study are Booker T. Washington, the president and founder of Tuskegee Institute, and his African counter-part, James E.K. Aggrey, a co-founder of Achimota who together became the public face of the model on two continents while they quietly nurtured a elite cadre of black professionals and activists beneath the façade of industrial education. Using education as a site of social, political and economic transformation, this dissertation will require attention to both the explicit and subtle activities of Washington and Aggrey beneath the façade of accommodation to the prevailing ideology of white elites. This dissertation builds on emerging interdisciplinary scholarship on the African Diaspora that requires a new interpretative lens to assess the agency of subjugated blacks who used myriad techniques to negotiate a dominant white ideology committed to black subordination to advance a broader black nationalist agenda.
Colorimetric Sensing of Nitroaromatic Energetic Materials Using Surfactant-Stabilized and Dithiocarbamate-Functionalized Gold Nanoparticles
Creators: name: Çağla Özcan
name: Ayşem Üzer
name: Durmazel, Selen
name: Reşat Apak
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: There is an increasing need for sensitive/selective determination of explosive traces in soil and post-blast debris for environmental and criminal investigations. A colorimetric sensor was developed to detect and quantify trinitrotoluene (TNT) and tetryl by the use of surfactant-stabilized and dithiocarbamate-functionalized gold nanoparticles (AuNPs). The sensor was manufactured by modifying the nanoparticles with the cationic surfactant cetyl trimethyl ammonium bromide and incorporating diethyldithiocarbamate (DDTC) in the AuNPs synthesis. DDTC firmly bound to AuNPs may show charge-transfer interactions with the —NO2 groups of the analytes, and a color change proportional to analyte concentration accompanied the agglomeration of nanoparticles, at which the absorbances were recorded at 534 nm and 458 nm for TNT and tetryl, respectively. Although the limit of detection was 8 mgL−1 (3.52 × 10−5 molL−1) for TNT and 0.8 mgL−1 (2.78 × 10−6 molL−1) for tetryl, providing moderate sensitivity, the cost was greatly reduced compared to those of other thiol-functionalized AuNPs sensors. Possible interferences of other energetic substances in synthetic mixtures, of camouflage materials used in passenger belongings (e.g., detergent, sugar, caffeine, and paracetamol) and common soil ions were also examined. The method was statistically validated against a reference gas chromatography/mass spectrometry method. This sensor may pave the way for the manufacture of novel low-cost nitroaromatic explosive sensors made of DDTC-based pesticides.
Water consumption data analysis of the Ritsumeikan-UBC House
Creators: name: Haley, Brie
Publisher: name: The University of British Columbia
Year: 2015

description: Planning for water resource management, assignment 1 Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Fracture Patterns Induced by Desiccation in a Thin Layer
Creators: name: Kitsunezaki, S.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a theoretical model of mud cracks, that is, the fracture patterns resulting from the contraction with drying in a thin layer of a mixture of granules and water. In this model, we consider the slip on the bottom of this layer and the relaxation of the elastic field that represents deformation of the layer. Analysis of the one-dimensional model gives results for the crack size that are consistent with experiments. We propose an analytical method of estimation for the growth velocity of a simple straight crack to explain the very slow propagation observed in actual experiments. Numerical simulations reveal the dependence of qualitative nature of the formation of crack patterns on material properties.
description: 37 pages,18 figures,REVTEX,submitted to Rhys.Rev.E
Nonparametric Estimation Of Expectations In The Analysis Of Discrete Choice Under Uncertainty
Creators: name: Manski, Charles F.
name: Manski, Charles F.
Publisher: name: Unknown
Year: 1988
Subjects: Research Methods/ Statistical Methods

description: The usual approach to econometric analysis of discrete choice under uncertainty imposes a parametric specification on agents' expectations. In some settings, one may estimate expectations nonparametrically and then infer preferences. Manski (1988) introduces this idea in the context of a population of agents who face finite horizon dynamic choice problems. The paper makes the idealized assumption that realizations reveal expectations perfectly. The present paper gives conditions under which the idea remains valid in the more realistic setting where realizations estimate expectations imperfectly.
HIDES spectroscopy of bright detached eclipsing binaries from the $Kepler$ field - III. Spectral analysis, updated parameters, and new systems
Creators: name: Hełminiak, K. G.
name: Konacki, M.
name: Maehara, H.
name: Kambe, E.
name: Ukita, N.
name: Ratajczak, M.
name: Pigulski, A.
name: Kozłowski, S. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the latest results of our spectroscopic observations and refined modelling of a sample of detached eclipsing binaries (DEBs), selected from the $Kepler$} Eclipsing Binary Catalog, that are also double-lined spectroscopic binaries (SB2). New high resolution spectra obtained with the HIDES spectrograph, attached to the 1.88-m telescope of the Okayama Astrophysical Observatory supplemented the previous observations, allowing to improve physical parameters of some systems, and characterize three previously omitted. All the obtained radial velocities (RVs) were combined with $Kepler$ photometry, in order to derive a full set of orbital and physical parameters. Ten out of eleven SB2s have their component spectra tomographically disentangled, and spectral analysis was performed with iSpec, in order to derive effective temperatures of components and metallicities of the systems. By comparing our results with theoretical models, we assess the age and evolutionary status of the studied objects. We find a good match to all but one systems. We have derived distances from thus determined parameters, and compare them with those from the $Gaia$ Data Release 2. For systems previously studied by other authors, our new results lead to better consistency between observations and models.
description: 25 pages, 17 figures, 13 tables. To appear in MNRAS (production in progress). High-resolution light curve figures, and the entire Table B1 available in MNRAS
Energy and Momentum in the Tetrad Theory of Gravitation
Creators: name: Shirafuji, Takeshi
name: Nashed, Gamal G. L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the energy and momentum of an isolated system in the tetrad theory of gravitation, starting from the most general Lagrangian quadratic in torsion, which involves four unknown parameters. When applied to the static spherically symmetric case, the parallel vector fields take a diagonal form, and the field equation has an exact solution. We analyze the linearized field equation in vacuum at distances far from the isolated system without assuming any symmetry property of the system. The linearized equation is a set of coupled equations for a symmetric and skew-symmetric tensor fields, but it is possible to solve it up to $O(1/r)$ for the stationary case. It is found that the general solution contains two constants, one being the gravitational mass of the source and the other a constant vector ${\grave B_α}$. The total energy is calculated from this solution and is found to be equal to the gravitational mass of the source. We also calculate the spatial momentum and find that its value coincides with the constant vector ${\grave B_α}$. The linearized field equation in vacuum, which is valid at distances far from the source, does not give any information about whether the constant vector ${\grave B_α}$ is vanishing or not. For a weakly gravitating source for which the field is weak everywhere, we find that the constant vector ${\grave B_α}$ vanishes.
description: 17 pages, LaTeX, published in Prog. Theor. Phys. 98 No.6 (1997)
Twisted bilayer graphene probed with nano-optics
Creators: Sunku, Sai Swaroop
Publisher: name: Columbia University
Year: 2021
Subjects: Condensed matter
Optics
Nanoscience
Graphene
Heterostructures

description: The discovery of strongly correlated electronic phases in twisted bilayer graphene has led to an enormous interest in twisted van der Waals (vdW) heterostructures. While twisting vdW layers provides a new control knob and never before seen functionalities, it also leads to large spatial variations in the electronic properties. Scanning probe experiments are therefore necessary to fully understand the properties of twisted vdW heterostructures. In this thesis, we studied twisted bilayer graphene (TBG) with two scanning probe techniques at two twist angle regimes. At small twist angles, our nano-infrared images resolved the spatial variations of the electronic structure occurring within a Moiré unit cell and uncovered a quantum photonic crystal. Meanwhile, with nano-photocurrent experiments, we resolved DC Seebeck coefficient changes occurring in domain walls on nanometer length scales. At larger twist angles, we mapped the twist angle variations naturally occurring in our device with a combination of nano-photocurrent and nano-infrared imaging. Finally, we also investigated different materials for use as nano-optics compatible top gates in future experiments on TBG. Our results demonstrate the power of nano-optics techniques in uncovering the rich, spatially inhomogeneous physics of twisted vdW heterostructures.
Supporting Information from Diverse material properties and morphology of moth proboscises relates to the feeding habits of some macromoth and other lepidopteran lineages
Creators: name: Bast, Elaine M.
name: Marshall, Natalie T.
name: Myers, Kendall O.
name: Marsh, Lucas W.
name: Hurtado, Martin Walschburger
name: Van Zandt, Peter A.
name: Lehnert, Matthew S.
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 400302
subject: Biomaterials

description: Figures and tables of proboscis measurements and their relationship to moth phylogeny and feeding habits.
Yang-Mills analogues of the Immirzi ambiguity
Creators: name: Gambini, R.
name: Obregon, O.
name: Pullin, J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We draw parallels between the recently introduced ``Immirzi ambiguity'' of the Ashtekar-like formulation of canonical quantum gravity and other ambiguities that appear in Yang-Mills theories, like the $θ$ ambiguity. We also discuss ambiguities in the Maxwell case, and implication for the loop quantization of these theories.
description: 5 pages, revtex, no figures
Molecular Docking with Gaussian Boson Sampling
Creators: name: Banchi, Leonardo
name: Fingerhuth, Mark
name: Babej, Tomas
name: Ing, Christopher
name: Arrazola, Juan Miguel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Gaussian Boson Samplers are photonic quantum devices with the potential to perform tasks that are intractable for classical systems. As with other near-term quantum technologies, an outstanding challenge is to identify specific problems of practical interest where these quantum devices can prove useful. Here we show that Gaussian Boson Samplers can be used to predict molecular docking configurations: the spatial orientations that molecules assume when they bind to larger proteins. Molecular docking is a central problem for pharmaceutical drug design, where docking configurations must be predicted for large numbers of candidate molecules. We develop a vertex-weighted binding interaction graph approach, where the molecular docking problem is reduced to finding the maximum weighted clique in a graph. We show that Gaussian Boson Samplers can be programmed to sample large-weight cliques, i.e., stable docking configurations, with high probability, even in the presence of photon loss. We also describe how outputs from the device can be used to enhance the performance of classical algorithms and increase their success rate of finding the molecular binding pose. To benchmark our approach, we predict the binding mode of a small molecule ligand to the tumor necrosis factor-$α$ converting enzyme, a target linked to immune system diseases and cancer.
description: 15 pages, 10 figures. Comments welcome
Logarithmically Slow Expansion of Hot Bubbles in Gases
Creators: name: Meerson, Baruch
name: Sasorov, Pavel V.
name: Sekimoto, Ken
Publisher: name: arXiv
Year: 1999
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We report logarithmically slow expansion of hot bubbles in gases in the process of cooling. A model problem first solved, when the temperature has compact support. Then temperature profile decaying exponentially at large distances is considered. The periphery of the bubble is shown to remain essentially static ("glassy") in the process of cooling until it is taken over by a logarithmically slowly expanding "core". An analytical solution to the problem is obtained by matched asymptotic expansion. This problem gives an example of how logarithmic corrections enter dynamic scaling.
description: 4 pages, 1 figure
A Cloud-based architecture for the Cherenkov Telescope Array observation simulations. Optimisation, design, and results
Creators: name: Landoni, M.
name: Romano, P.
name: Vercellone, S.
name: Knodlseder, J.
name: Bianco, A.
name: Tavecchio, F.
name: Corina, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Simulating and analysing detailed observations of astrophysical sources for very high energy (VHE) experiments, like the Cherenkov Telescope Array (CTA), can be a demanding task especially in terms of CPU consumption and required storage. In this context, we propose an innovative cloud computing architecture based on Amazon Web Services (AWS) aiming to decrease the amount of time required to simulate and analyse a given field by distributing the workload and exploiting the large computational power offered by AWS. We detail how the various services offered by the Amazon online platform are jointly used in our architecture and we report a comparison of the execution times required for simulating observations of a test source with the CTA, by a single machine and the cloud-based approach. We find that, by using AWS, we can run our simulations more than 2 orders of magnitude faster than by using a general purpose workstation for the same cost. We suggest to consider this method when observations need to be simulated, analysed, and concluded within short timescales.
description: Accepted for publication in Astrophysical Journal Supplement (ApJS)