cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Carrier-Carrier Correlations in an Optically Excited Single Semiconductor Quantum Dot
Creators: name: Dekel, E.
name: Gershoni, D.
name: Ehrenfreund, E.
name: Garcia, J. M.
name: Petroff, P. M.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We applied low temperature diffraction limited confocal optical microscopy to spatially resolve, and spectroscopically study photoluminescence from single self-assembled semiconductor quantum dots. Using selective wavelength imaging we unambiguously demonstrated that a single photoexcited quantum dot emits light in a few very narrow spectral lines. The measured spectrum and its dependence on the power of either cw or pulsed excitation are explained by taking carrier correlations into account. We solve numerically a many body Hamiltonian for a model quantum dot, and we show that the multi line emission spectrum is due to optical transitions between confined exciton multiplexes. We furthermore show that the electron-electron and hole-hole exchange interaction is responsible for the typical appearance of pairs in the photoluminescence spectra and for the appearance of red shifted new lines as the excitation power increases. The fact that only a few spectral lines appear in the emission spectrum strongly indicates fast thermalization. This means that a multiexciton relaxes to its ground state much faster than its radiative lifetime.
description: 17 figures and 2 tables
title: DAHA and Dyck path algebras
Creators: name: Novarini, Chiara
Year: 2024

description: Diese Arbeit besteht aus zwei Teilen. Der erste Teil basiert auf unserer Arbeit über DAHA-Darstellungen an Einheitswurzeln und doubly periodic tableaux [BCMN23]. Wir geben eine kombinatorische Beschreibung von X-halbeinfachen graduierten Darstellungen von DAHA und zeigen, dass diese auch mithilfe bestimmter Räume von Intertwinern von Quantengruppendarstellungen konstruiert werden können. Als Anwendung beweisen wir eine Vermutung von Morton und Samuelson [MS21] über die Tangle-Algebra-Beschreibung von DAHA. In der zweiten Hälfte dieser Arbeit, die auf [BMN] basiert, definieren wir zunächst die A_q-Algebra einer gegebenen Oberfläche auf skeintheoretische Weise. Dann konzentrieren wir uns auf die A_q der Kreisscheibe. Wir geben eine Basis an diese Algebra, indem wir beweisen, dass sie isomorph zum Raum der Endomorphismen einer bestimmten Quantengruppendarstellung ist. Schließlich zeigen wir, wie man Intertwinern verwenden kann, um Darstellungen für A_q des Kreisrings und für A_q,t des Torus zu konstruieren. [BCMN23] Léa Bittmann, Alex Chandler, Anton Mellit, and Chiara Novarini. Type A DAHA and doubly periodic tableaux. Adv. Math., 2023 [BMN] Léa Bittmann, Anton Melli, Chiara Novarini. Schur-Weyl duality and diagrammatics for A_q,t. (in preparation) [MS21] H. R. Morton and Peter Samuelson. DAHAs and skein theory. Comm. Math. Phys., 2021
description: This thesis is composed of two parts. The first one is based on our work on DAHA representations at roots of unity and doubly periodic tableaux [BCMN]. We give a combinatorial description of X-semisimple graded representations of the DAHA, showing that these can also be constructed using certain spaces of intertwiners of quantum group representations. As an application, we prove a conjecture of Morton and Samuelson [MS21] on the tangle algebra presentation of the DAHA. In the second half of this work, which is based on [BMN], we begin by defining in a skein theoretic fashion the A_q algebra of a given surface. We then focus on the A_q of the disc. We give a basis for this algebra by proving that it is isomorphic to the space of endomorphisms of a certain quantum group representation. Finally, we construct representations for the A_q of the annulus and A_q,t of the torus from spaces of intertwiners. [BCMN23] Léa Bittmann, Alex Chandler, Anton Mellit, and Chiara Novarini. Type A DAHA and doubly periodic tableaux. Adv. Math., 2023 [BMN] Léa Bittmann, Anton Melli, Chiara Novarini. Schur-Weyl duality and diagrammatics for A_q,t. (in preparation) [MS21] H. R. Morton and Peter Samuelson. DAHAs and skein theory. Comm. Math. Phys., 2021
‘Australian sailors wanted’: Labour supply and Australian shipping, c. 1870–c. 1914
Creators: name: Ostapenko, Dmytro
name: Kirkby, Diane
Publisher: name: La Trobe
Year: 2025
Subjects: classificationCode: 43
subject: History, heritage and archaeology
classificationCode: 4303
subject: Historical studies
classificationCode: 5002
subject: History and philosophy of specific fields
classificationCode: 50
subject: Philosophy and religious studies
classificationCode: 38
subject: Economics
classificationCode: 3801
subject: Applied economics

description: In the pre-1914 era Australia did not develop an ocean-going merchant navy. The problem is well recognised in previous studies that assumed that it was high Australian wages that made the operational cost of deep-sea vessels uncompetitive on a global scale. This article reconstructs historical shifts in the Australian market for a seagoing workforce and demonstrates there was low recruitment of Australian labour. Drawing on new sources and inspired by efficiency wage theory the article argues that it was this shortage of a domestic labour supply that constrained the development of a national deep-sea shipping industry.
Boltzmann factor and Hawking radiation
Creators: name: Ryskin, Gregory
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Hawking radiation has thermal spectrum corresponding to the temperature ${T}_{H}={(8πM)}^{-1}$, where $M$ is the mass (energy) of the black hole. Corrections to the Hawking radiation spectrum were discovered by Kraus and Wilczek (1995) and Parikh and Wilczek (2000). Here I show that these corrections follow directly from the basic principles of thermodynamics and statistical mechanics. In essence, it is the Boltzmann factor that ought to be corrected; corrections to the Hawking (or any other) radiation spectrum then follow necessarily.
description: 2 pages
Myrcia multiglomerata E. Lucas & C. E. Wilson
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Myrtales
Myrtaceae
Myrcia
Myrcia multiglomerata

description: [1296] Myrcia multiglomerata (Amshoff) E.Lucas & C.E.Wilson
 Ann. Missouri Bot. Gard. 101 (4): 676 (Lucas & Wilson 2016). — Marlierea multiglomerata Amshoff, Recueil Trav. Bot. Néerl. 42: 3 (Amshoff 1950).
NOTE. — Known only from the Guiana Shield.
VERNACULAR NAMES. — Ka: pɨlɨwa epulu, pɨlɨwa pɨ• Wp: kumatɨ sili, pila lea • Wn: wahawe • Br: pitangueira-de-cachorro.
 HERBARIUM DATA (FG). — 7 collections at CAY. Sel. exs.: P.Grenand 356, height 20 m.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 617, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Future of academia and the role of research
Creators: name: Timalsina, Staneshwar
Publisher: name: Zenodo
Year: 2024
Subjects: Spanda
shakti
Kula
yantra
Īśāna
saivadvaita
Chandi
Shiva
sthaneshwar timalsina
trika
Tantra
Camunda
Kali
Durga
mahadeva
Vasugupta
Saundaryalahari
vedanta
vimarsha-foundation
Tantric philosophy
anava upaya
Devi Mahatmya
sarvamnaya
Sarvamnaya
Sadāśiva
shakta upāya
sarvamnaya-oral-tradition-archive
advaita vedanta
agama
Shaiva
amnaya
Tripurasundari
tantraloka
tripura
Bhairava
Abhinavagupta
krama
Divine Mother
Kubjika
shambhava
Kaula
timalsina
Mahakali
consciousness
Mālinīvijayottaratantra
Tripura Rahasya
Shiva Sutra
Guhyakālī
Kashmir Shaivism

description: This video is an introductory discussion on Tantra led by Ācārya Dr. Sthaneshwar Timalsina. Dr. Timalsina discusses the future of academia and the role of research

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**** Acharya Dr. Sthaneshwar Timalsina ****
Acharya Dr. Sthaneshwar Timalsina is an esteemed traditionally consecrated teacher of Shaiva-Shakta Hindu Tantra. He is also the Endowed Chair of Indic Studies in New York, U.S.A. at Stony Brook University's College of Arts & Sciences in the Department of Asian & Asian-American Studies. Acharya Sthaneshwar founded Vimarsha Foundation as a modern school (gurukula) for teaching and reflecting on the ancient wisdom of r̥ṣis and siddhas. Through Vimarsha Foundation, a non-profit organization, Acharya Sthaneshwar teaches shastra and sādhanā to students of all backgrounds. The Vimarsha Foundation hosts free semester length courses on classic texts of the Tantric Tradition and offers many more free video and written teachings.

Original YouTube video: https://www.youtube.com/watch?v=DpNDZ70COuY

This presentation is part of the Sarvāmnāya Oral Tradition Archive.
Vimarsha Foundation. (2025). The Sarvāmnāya Oral Tradition Archive [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15188107
Resonantly Equivalent Catacondensed Even Ring Systems
Creators: name: Brezovnik, Simon
name: Tratnik, Niko
name: Pleteršek, Petra Žigert
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 92E10, 05C70, 05C12, 05C10, 05C85, 05C90

description: In this paper we generalize the binary coding procedure of perfect matchings from catacondensed benzenoid graphs to catacondensed even ring systems (also called cers). Next, we study cers with isomorphic resonance graphs. For this purpose, we define resonantly equivalent cers. Finally, we investigate cers whose resonance graphs are isomorphic to the resonance graphs of catacondensed benzenoid graphs. As a consequence we show that for each phenylene there exists a catacondensed benzenoid graph such that their resonance graphs are isomorphic.
Stability of aerobic granular sludge for simultaneous nitrogen and Pb(II) removal from inorganic wastewater
Creators: name: Zeng, Mingjing
name: Li, Zhenghao
name: Cheng, Yuanyuan
name: Long, Bei
name: Wu, Junfeng
name: Zeng, Yu
name: Liu, Yong
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: In this paper, we proposed a strategy for the establishment of an aerobic granular sludge (AGS) system for simultaneous nitrogen and Pb(II) removal from inorganic wastewater. AGS was stored in lead nitrate solution to select functional bacteria resistant to lead poison, and then an AGS system for ammonia nitrogen (180-270 mg/L) and Pb(II) (15-30 mg/L) removal was established based on carbon dosing and a two-stage oxic/anoxic operational mode. After storage for 40 days, the stability of AGS decreased because specific oxygen uptake rate, nitrification rate and abundance of Nitrosomonas decreased to different degrees compared with those before storage. During the first 70 days of the recovery process, AGS in R1 (the blank reactor) and R2 (the control reactor) both experienced a first breakage and then regranulation process. The main properties of AGS in reactors R1 and R2 tended to be stable after days 106 and 117, respectively, but the structure of steady-state AGS in R2 was more compact. The total inorganic nitrogen (TIN) in effluent from R1 and R2 basically remained below 25 mg/L after days 98 and 90, respectively. The Pb(II) concentration in effluent from R2 was always below 0.3 mg/L. On day 140, the relative abundance of Nitrosomonas in R2 (6.17%) was significantly lower than that in R1 (12.15%), whereas the relative abundance of denitrifying bacteria was significantly higher than that in R1 (62.44% and 46.79%). The system removed 1 kg of influent TIN only consuming approximately 1.85 kg of carbon source, demonstrating clear advantages in energy savings.
title: Single-bit reception with coded excitation for lightweight advanced ultrasonic imaging systems
Creators: name: Nicolson, Ewan
name: Lines, David
name: Mohseni, Ehsan
name: MacLeod, Charles Norman
Publisher: name: Strathprints - University of Strathclyde
Year: 2024

description: The demand for an efficient and reliable ultrasonic phased array imaging system is not unique to a single industry. Today’s imaging systems can be enhanced in a number of areas including; improving scanning and processing times, reducing data storage requirements, simplifying hardware and prolonging probe lifespan. In this work, it is shown that by combining the use of Coded Excitation with single-bit data capture, a number of these areas can be improved. Despite using single-bit receive data, resolution can be recovered through the coded excitation pulse compression process, and shown to produce high Signal-to-Noise Ratio (SNR) images of Phase Coherence Imaging (PCI) and Total Focusing Method (TFM) of tip diffraction in a carbon steel sample. Comparison with conventional single-cycle transmission pulses has shown that little imaging performance degradation is seen despite a significant reduction in data resolution and size. This has also been shown to be effective at low excitation voltages with gain compensation due to the obsolescence of signal saturation concerns when considering single-bit receive data. The ability to compute high-resolution ultrasonic images from low-resolution input data at low transmission voltages has important implications for data compression, acquisition & imaging performance, operator safety and hardware simplification for ultrasonic imaging systems across industrial and medical fields.
Dissipative Split Charge Equilibration
Creators: name: Müser, Martin
Publisher: name: Zenodo
Year: 2024

description: This projects contains a python code allowing one to reproduce the results presented in the manuscript "Dissipative split-charge formalism: Ohm’s law, Nyquist noise, and non-contact friction" by Martin H. Müser, which was in press at The Journal of Chemical Physics while this repository was created.
title: Front matter
Creators: name: Norland Educare Research Journal
Publisher: name: Norland College, York Place, London Road, Bath BA1 6AE, UK
Year: 2024

description: The Norland Educare Research Journal is an international double-blind peer-reviewed journal, published annually, online only. It is an open access journal, offering free-of-charge publication to researchers and authors, and free access to papers for readers.

The journal has a distinct thematic focus on the interplay of education and care, and its scope is to challenge established early childhood discourses, practices and policies, and to construct situated knowledge on home-based educare that is of global relevance and local significance.
Semi-classical limitations for photon emission in strong external fields
Creators: name: Raicher, E.
name: Eliezer, S.
name: Keitel, C. H.
name: Hatsagortsyan, K. Z.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The semi-classical heuristic emission formula of Baier-Katkov [Sov. Phys. JETP \textbf{26}, 854 (1968)] is well-known to describe radiation of an ultrarelativistic electron in strong external fields employing the electron's classical trajectory. To find the limitations of the Baier-Katkov approach, we investigate electron radiation in a strong rotating electric field quantum mechanically using the Wentzel-Kramers-Brillouin approximation. Except for an ultrarelativistic velocity, it is shown that an additional condition is required in order to recover the widely used semi-classical result. A violation of this condition leads to two consequences. First, it gives rise to qualitative discrepancy in harmonic spectra between the two approaches. Second, the quantum harmonic spectra are determined not only by the classical trajectory but also by the dispersion relation of the effective photons of the external field.
title: يوسف بن عبد الله السركال: أحد رجالات دبي في النّصف الأوّل من القرن العشرين/ ناصر بن أحمد بن عيسى السركال.
Creators: name: السركال، ناصر بن أحمد بن عيسى، 1993-
Publisher: name: الأرشيف والمكتبة الوطنية
Year: 2018
Subjects: السّركال، يوسف بن عبد الله، - 1938
الإمارات العربية المتحدة - تراجم

- المقال نبذة عن حياة أحد رجالات ووجهاء دبي في عصر اللؤلؤ. هو يوسف بن عبد الله بن محمد بن حسن بن محمد بن عوض بن محمد السركال، يرجع نسبه إلى عشيرة آل علي من قبيلة مطير. ولد في ستينات القرن التاسع عشر، ونشأ نشأة صالحة على يدي والده العالم الشيخ عبد الله بن محمد. وهنا يتناول المقال جانباً من أعماله والمناصب التي تولاها، وتجارته في اللؤلؤ، وثروته، واسهاماته في التعليم والأعمال الخيرية وثقافته وأملاكه، كما يستعرض بعض الوثائق والرسائل التي تخصه.
Heisenberg frustrated magnets: a nonperturbative approach
Creators: name: Tissier, M.
name: Delamotte, B.
name: Mouhanna, D.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Frustrated magnets are a notorious example where the usual perturbative methods are in conflict. Using a nonperturbative Wilson-like approach, we get a coherent picture of the physics of Heisenberg frustrated magnets everywhere between $d=2$ and $d=4$. We recover all known perturbative results in a single framework and find the transition to be weakly first order in $d=3$. We compute effective exponents in good agreement with numerical and experimental data.
description: 5 pages, Revtex, technical details available at http://www.lpthe.jussieu.fr/~tissier
Nitzschia martiana (C.A. Agardh) Van Heurck (Bacillariophyceae): distribution modelling and new records along the Brazilian coast
Creators: name: Affe, Helen Michelle De Jesus
name: Rocha, Diogo Souza Bezerra
name: Taiara Aguiar Caires
name: Jesus, Priscila Barreto De
name: Araujo, Valter Loureiro De
name: Fernandes, Luciano FelíCio
name: Josŕ Marcos De Castro Nunes
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Benthic diatoms that produce and live inside mucilage tubes are prominent pioneer colonizers of marine substrata. This adaptation is an ecological strategy related to mechanical protection against wave action and desiccation. In this article, we identify Nitzschia martiana based on morphological and ultrastructural analyses from several samples, collected from different localities. We also analysed the potential distribution model of the species to identify potential areas along the Brazilian coast with high environmental suitability for its occurrence. The distribution modelling, associated with our wide sampling, allowed us to present a robust characterization of the distribution of N. martiana along the Brazilian coast. Previous records were restricted to the coast of the states of Paraná, Santa Catarina, and Pernambuco. Our results confirmed the occurrence of the species in 14 new localities, over a temperature range of 18–27°C, always occurring as macroscopic tufts, in regions exposed to direct sunlight during low tide periods, on sand, coral reefs and rocks.
A Transmuted Power Gompertz Distribution: Properties and Applications
Creators: name: Eraikhuemen, Innocent Boyle
name: Terna Godfrey Ieren
name: Adana'a Felix Chama
name: Asongo, Abraham Iorkaa
name: Bassa Shiwaye Yakubu
name: Bala, Abdul Haruna
Publisher: name: Zenodo
Year: 2021
Subjects: Transmuted power Gompertz distribution
statistical properties
estimation of parameters
application and performance

description: This work introduces and studies a new probability distribution called “Transmuted Power Gompertz distribution”. The work studied the properties of the new model. The estimates of the four parameters model were carried out using the method of maximum likelihood estimation. The work further evaluates the goodness-of-fit of the proposed distribution compared to other distributions by means of applications of the model to two real life datasets and the result show that the proposed distribution is more flexible than the fitted existing distributions.
INNOVATSION IQTISODIYOT SHAROITIDA MOLIYA VA BUXGALTERIYA HISOBI TIZIMLARINI RAQAMLASHTIRISHNING STRATEGIK YO'NALISHLARI VA RIVOJLANISH MEXANIZMLARI
Creators: name: Nusratullayev, Burxonjon
Publisher: name: Zenodo
Year: 2024

description: Zamonaviy iqtisodiy asoslar doirasida raqamli texnologiyalarning moliyaviy va buxgalteriya amaliyotiga transformatsion ta’siri o‘rganiladi. Moliyaviy menejmentda samaradorlik, shaffoflik va qaror qabul qilishni kuchaytirish uchun sun’iy intellekt, blockchain va bulutli hisoblash kabi ilg‘or raqamli vositalarni birlashtirishning strategik ahamiyatini ta’kidlaydi. Tadqiqot raqamlashtirish bilan bog‘liq asosiy muammolar va imkoniyatlarni, shu jumladan kiberxavfsizlik xavfini, tartibga rioya qilishni va moliyaviy mutaxassislarni to‘ldirishni aniqlashga qaratilgan. Bundan tashqari, u standartlashtirilgan asoslarni ishlab chiqish, tarmoqlararo hamkorlikni kuchaytirish va moliyaviy ma’lumotlarni tahlil qilishda innovatsion yondashuvlarni ilgari surish kabi raqamli yechimlarni uzluksiz qabul qilishni rivojlantirish mexanizmlarini o‘rganadi. Ushbu tadqiqot tez rivojlanayotgan innovatsion iqtisodiyot talablariga muvofiq moliyaviy va buxgalteriya operatsiyalarini optimallashtirishga intilayotgan manfaatdor tomonlar uchun juda muhimdir. U kelajakdagi tendensiyalar haqida tushuncha beradi va barqaror raqamli transformatsiyaga erishish uchun amaliy tavsiyalar berilgan.
Photostability study of agomelatine using UHPLC-DAD-MS/MS method. Kinetics, identification of the transformation products and in silico evaluation of toxicity
Creators: name: Trawiński, Jakub
name: Skibiński, Robert
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Photostability of an antidepressant agomelatine under the simulated solar radiation was studied. Quantitative and qualitative analysis of this process was performed with the use of UHPLC-DAD system coupled with a high resolution hybrid ESI-Q-TOF mass spectrometer. In contrast to the foregoing studies agomelatine turned out to be relatively photolabile compound. During the experiment six transformation products were formed, and their structures were elucidated on the basis of MS/MS fragmentation spectra. Four of these photoproducts were found to be a result of aromatic and aliphatic hydroxylation. Additionally, identified products were submitted to the in silico toxicity evaluation, which showed that some of them could be more mutagenic or toxic to rodents than the parent compound.
The Two-Dimensional S=1 Quantum Heisenberg Antiferromagnet at Finite Temperatures
Creators: name: Harada, Kenji
name: Troyer, Matthias
name: Kawashima, Naoki
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The temperature dependence of the correlation length, susceptibilities and the magnetic structure factor of the two-dimensional spin-1 square lattice quantum Heisenberg antiferromagnet are computed by the quantum Monte Carlo loop algorithm (QMC). In the experimentally relevant temperature regime the theoretically predicted asymptotic low temperature behavior is found to be not valid. The QMC results however, agree reasonably well with the experimental measurements of La2NiO4 even without considering anisotropies in the exchange interactions.
description: 4 Pages, 1 table, 4 figures
Contribution du capital humain à la réduction du chômage au Cameroun
Creators: name: DJOUMESSI WAMBA, Mathias
name: DONTSI
Publisher: name: Zenodo
Year: 2024
Subjects: Capital social ; Capital humain ; Chômage ; réseau relationnel ; Cameroun.

description: L’objectif de cet article est d’analyser l’influence du capital social sur le chômage au Cameroun. En se basant sur les statistiques de EESI 2, le taux de chômage réel serait estimé à environ de 74,6% au Cameroun. Plus de 89% des chômeurs utiliseraient d’ailleurs les canaux informels pour rechercher un emploi décent. En résonnant en termes de coût d’opportunité, nous avons élaboré un modèle théorique dans lequel le capital social favorise l’accès à l’emploi lorsqu’il s’accompagne d’un niveau appréciable de capital humain. L’estimation d’un modèle de durée au chômage par la méthode du maximum de vraisemblance montre que les individus qui font recours aux relations personnelles durent moins au chômage que les chômeurs qui utilisent d’autres canaux. De même, la durée au chômage diminue avec le niveau d’éducation. Ainsi, lorsque le nombre d’année d’études augmente de 10%, la durée au chômage diminue de 0,56%. Quelques recommandations ont été formulées notamment dans le sens de l’accumulation et de la valorisation du capital social.
A perspective on topological nanophotonics: current status and future challenges
Creators: name: Rider, Marie S.
name: Palmer, Samuel J.
name: Pocock, Simon R.
name: Xiao, Xiaofei
name: Huidobro, Paloma Arroyo
name: Giannini, Vincenzo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological photonic systems, with their ability to host states protected against disorder and perturbation, allow us to do with photons what topological insulators do with electrons. Topological photonics can refer to electronic systems coupled with light or purely photonic setups. By shrinking these systems to the nanoscale, we can harness the enhanced sensitivity observed in nanoscale structures and combine this with the protection of the topological photonic states, allowing us to design photonic local density of states and to push towards one of the ultimate goals of modern science: the precise control of photons at the nanoscale. This is paramount for both nano-technological applications and also for fundamental research in light matter problems. For purely photonic systems, we work with bosonic rather than fermionic states, so the implementation of topology in these systems requires new paradigms. Trying to face these challenges has helped in the creation of the exciting new field of topological nanophotonics, with far-reaching applications. In this prospective article we review milestones in topological photonics and discuss how they can be built upon at the nanoscale.
Ronald Charles David Breslow - Bibliography and list of patents from Ronald Charles David Breslow. 14 March 1931—25 October 2017
Creators: name: Brown, John M.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Organic Chemistry
subject: FOS: Chemical sciences

description: Ronald Breslow was one of the leading organic chemists of his generation. He had received the perfect start in gaining a Harvard doctorate at the age of 24 supervised by the legendary Bob Woodward, followed by a year of postdoctoral work in Cambridge with the equally legendary, but scientifically distinct, Alexander Todd. An academic career of 62 years at Columbia University followed, starting in 1955, and scientific success arose quickly. He was a physical organic chemist, using this discipline as a vehicle for tackling all manner of scientific problems and venturing as needed into biology, physics or medicine. He prepared the simplest aromatic species, solved the mechanism of action of Vitamin B1, built bridges between organic chemistry and enzymology, and developed an anti-cancer drug with a distinct enzyme target. Rewards, honours and prestigious lecture invitations arrived throughout his career, in recognition of the scope and originality of his achievements. He met Esther at Harvard, and they married on completion of his PhD. After returning to the USA, she pursued a successful career in biochemistry at Weill Cornell Medical School in New York. They raised two daughters, Stephanie and Karen, who both became successful attorneys. He had strong family values and was very proud of all their achievements. Towards his co-workers, he was open, eager to engage in discussion and committed to supporting them, both during time at Columbia and thereafter. His warmth encouraged positive responses to his style of supervision, and lively discussions. He was an accomplished classical and jazz pianist, the family cook, and they scuba-dived on annual vacations.
Math for the Benefit of Society: A New MATLAB-Based Gen-Ed Course
Creators: name: Isihara, Paul
name: Townsend, Edwin
name: Ndekezi, Richard
name: Tully, Kevin
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Plant Biology

description: Responding to a call for national reform of mathematical education, as well as a college-wide revision of general education (GE) requirements, we describe a new entry-level, GE course focused on the humanitarian utility of mathematics. This includes a detailed overview of how we taught the course using a Humanitarian MATLAB Lab Manual developed collaboratively with undergraduate students within an applied math program. A PRIMUS edition of this manual with complete MATLAB materials for a GE course is included as an appendix for interested readers. A variety of social justice issues including peace-building after modern civil wars, continued cancer risk after Chernobyl, gang reduction, various dimensions of human trafficking, the use of a tractor and herbicide in subsistence farming, equitable resource distribution during the Syrian refugee crisis, and access to HIV vaccines are included in this special edition of the manual.
Condensation of Hard Spheres Under Gravity
Creators: name: Hong, Daniel C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Starting from Enskog equation of hard spheres of mass m and diameter D under the gravity g, we first derive the exact equation of motion for the equilibrium density profile at a temperature T and examine its solutions via the gradient expansion. The solutions exist only when βμ\le μ_o \approx 21.756 in 2 dimensions and μ_o\approx 15.299 in 3 dimensions, where μis the dimensionless initial layer thickness and β=mgD/T. When this inequality breaks down, a fraction of particles condense from the bottom up to the Fermi surface.
description: 9 pages, one figure
Jensen's force and the statistical mechanics of cortical asynchronous states
Creators: name: Buendía, Victor
name: Villegas, Pablo
name: di Santo, Serena
name: Vezzani, Alessandro
name: Burioni, Raffaella
name: Muñoz, Miguel A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The cortex exhibits self-sustained highly-irregular activity even under resting conditions, whose origin and function need to be fully understood. It is believed that this can be described as an "asynchronous state" stemming from the balance between excitation and inhibition, with important consequences for information-processing, though a competing hypothesis claims it stems from critical dynamics. By analyzing a parsimonious neural-network model with excitatory and inhibitory interactions, we elucidate a noise-induced mechanism called "Jensen's force" responsible for the emergence of a novel phase of arbitrarily-low but self-sustained activity, which reproduces all the experimental features of asynchronous states. The simplicity of our framework allows for a deep understanding of asynchronous states from a broad statistical-mechanics perspective and of the phase transitions to other standard phases it exhibits, opening the door to reconcile, asynchronous-state and critical-state hypotheses. We argue that Jensen's forces are measurable experimentally and might be relevant in contexts beyond neuroscience.
Myrcia neospeciosa A. R. Lourenco & E. Lucas
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Myrtales
Myrtaceae
Myrcia
Myrcia neospeciosa

description: [1299] Myrcia neospeciosa A.R.Lourenço & E.Lucas
 Phytotaxa 373 (1): 79 [23 Oct. 2018] (Lourenço & Lucas 2018). — Calyptranthes speciosa Sagot, Ann. Sci. Nat., Bot. sér. 6, 20: 187 (Sagot 1885).
 HERBARIUM DATA (FG). — 8 collections at CAY. Sel. exs.: E.M. Mélinon 488, 1862 [erroneously filed at F as "E.M. Mélinon 18"; "18" actually represents the first two digits of the year of collection, often pre-printed on P labels in the 19th century] (holo-, P[P00723171]; iso-, BM[BM001011735], F[V0092885F], K[K000331318], P[P00723172]).
 SIZE. — Colombia, Caquetá. S. Bergeron & S. Roman 494-556 (MO), 12 m × 13.05 cm.
INVENTORY DATA (FG). — 1 tree, dbh = 11.9 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 617, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Complete spectrum of quantum integrable lattice models associated to $\mathcal{U}_{q} (\widehat{gl_{n}})$ by separation of variables
Creators: name: Maillet, J. M.
name: Niccoli, G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we apply our new separation of variables approach to completely characterize the transfer matrix spectrum for quantum integrable lattice models associated to fundamental evaluation representations of $\mathcal{U}_{q} (\widehat{gl_{n}})$ with general quasi-periodic boundary conditions. We consider here the case of generic deformations associated to a parameter $q$ which is not a root of unity. The Separation of Variables (SoV) basis for the transfer matrix spectral problem is generated by using the action of the transfer matrix itself on a generic co-vector of the Hilbert space, following the general procedure described in our paper [1]. Such a SoV construction allows to prove that for general values of the parameters defining the model the transfer matrix is diagonalizable and with simple spectrum for any twist matrix which is also diagonalizable with simple spectrum. Then, using together the knowledge of such a SoV basis and of the fusion relations satisfied by the hierarchy of transfer matrices, we derive a complete characterization of the transfer matrix eigenvalues and eigenvectors as solutions of a system of polynomial equations of order $n+1$. Moreover, we show that such a SoV discrete spectrum characterization is equivalently reformulated in terms of a finite difference functional equation, the quantum spectral curve equation, under a proper choice of the set of its solutions. A construction of the associated Q-operator induced by our SoV approach is also presented.
description: 39 pages
TO DEVELOP STUDENTS' INTEREST IN STUDYING FOREIGN LITERATURE
Creators: name: Abdullayeva, Visola
Publisher: name: Zenodo
Year: 2024

description: This article explores effective methods for cultivating students' interest in studying foreign literature. A review of academic literature reveals several key strategies, including: 1) Selecting engaging, relatable texts; 2) Drawing connections to students' lives and cultures; 3) Using multimedia resources to provide context; 4) Facilitating active discussion and analysis; 5) Assigning creative projects and performances. Results from studies and anecdotal evidence from educators suggest these approaches can significantly enhance student motivation and engagement with foreign literature. The paper analyzes the benefits and challenges of implementing such strategies and discusses implications for curriculum and instruction.
Supplementary Data from Structure-guided fragment-based drug discovery at the synchrotron: screening binding sites and correlations with hotspot mapping
Creators: name: Sherine E. Thomas
name: Collins, Patrick
name: James, Rory Hennell
name: Vitor Mendes
name: Sitthivut Charoensutthivarakul
name: Radoux, Chris
name: Abell, Chris
name: Coyne, Anthony G.
name: R. Andres Floto
name: Delft, Frank Von
name: Blundell, Tom L.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Biochemistry
subject: Crystallography
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: Computational Biology

description: Structure-guided Fragment-based Drug Discovery at the Synchrotron: Screening Binding Sites and Correlations with Hotspot Mapping
Persistence and Quiescence of Seismicity on Fault Systems
Creators: name: Lee, M. W.
name: Sornette, D.
name: Knopoff, L.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the statistics of simulated earthquakes in a quasistatic model of two parallel heterogeneous faults within a slowly driven elastic tectonic plate. The probability that one fault remains dormant while the other is active for a time Dt following the previous activity shift is proportional to the inverse of Dt to the power 1+x, a result that is robust in the presence of annealed noise and strength weakening. A mean field theory accounts for the observed dependence of the persistence exponent x as a function of heterogeneity and distance between faults. These results continue to hold if the number of competing faults is increased. This is related to the persistence phenomenon discovered in a large variety of systems, which specifies how long a relaxing dynamical system remains in a neighborhood of its initial configuration. Our persistence exponent is found to vary as a function of heterogeneity and distance between faults, thus defining a novel universality class.
description: 4 pages, 3 figures, Revtex
The Abolition of Intellectual Property
Creators: name: Keeney, Gavin
Publisher: name: Zenodo
Year: 2023
Subjects: Intellectual Property
Philosophy of Art
Political Economy

description: An argument for the elective abolition of Intellectual Property Rights (IPR). The premise is that IPR law is a form of slavery to Capital, for authors and for artists. The ontological reduction of IPR is part and parcel of the "Proof of Concept" phase for a PhD dissertation project, dating to September 2021, entitled Works for Works: "No Rights".
Myrcia paivae O. Berg
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Myrtales
Myrtaceae
Myrcia
Myrcia paivae

description: [1300] Myrcia paivae O.Berg
 Fl. Bras. [Martius] 14 (1): 179 [15 May 1857] (Berg 1857).
 Myrcia frontinensis Hieron., Bot. Jahrb. Syst. 20 (3, Beibl. 49): 63 [9 Apr. 1895] (Hieronymus 1895).
 Myrcia gamaeana Glaz., Bull. Soc. Bot. France 54 (Mém. 3c): 210 [“1907” publ. 22 Feb. 1908] (Glaziou 1908), nom. inval. (opus utique oppr.)
 Myrcia paivae var. gracilis Lingelsh., Repert. Spec. Nov. Regni Veg. 7: 243 (Lingelsheim 1909).
 NOTE. — M. gamaeana erroneously appears as “ Myrcia frontinensis Hieron. var. gamaeana Glaz. ” in Govaerts et al. (2008).
 HERBARIUM DATA (FG). — 4 collections at CAY. Sel. exs.: G. Cremers & P. Petronelli 11776.
 SIZE. — Bolivia, La Paz. A.F. Fuentes et al. 6109 (MO), 10 m × 14.6 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 617, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Coherent Laser Induced Synthesis of Rare Earth Doped Nanocrystallites of 50PbO-25Bi$_2$O$_3$-20Ga$_2$O$_3$-5BaO
Creators: name: Kityk, Iwan
name: El-Naggar, Ahmed
name: Albassam, Abdullah
name: Andrushchak, Nazariy
name: Kulwas, Daniel
name: Czaja, Pawel
name: Sahraoui, Bouchta
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A principal possibility of formation the nanostructures on the surfaces of 50PbO-25Bi$_2$O$_3$-20Ga$_2$O$_3$-5BaO (doped by Eu3+, Er3+, Dy3+) is demonstrated by using multi-coherent beams. As a sources of the photoinducing coherent light we have used nanosecond Nd:YAG and Er:Yb lasers generating at 1064 nm and 1540 nm, respectively. The morphology of the photoinduced surfaces is sensitive to the type of rare earth ions. The thickness of the layer was about 20-30 nm. Possible mechanisms are explained by coherent photoinduction of the valence electrons.
On the Collapse of Tubes Carried by 3D Incompressible Flows
Creators: name: Cordoba, Diego
name: Fefferman, Charles
Publisher: name: arXiv
Year: 2001
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We povide a test for numerical simulations for the collapse of regular tubes carried by a 3D incompressible flow. In particular, we obtain necessary conditions for 3D Euler to have a vortex tube collapse in finite time.
description: 10 pages; the only change in this replacement is correction of " From" typos due to corruption in e-mail
The sign problem in Monte Carlo simulations of frustrated quantum spin systems
Creators: name: Henelius, Patrik
name: Sandvik, Anders W.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We discuss the sign problem arising in Monte Carlo simulations of frustrated quantum spin systems. We show that for a class of ``semi-frustrated'' systems (Heisenberg models with ferromagnetic couplings $J_z(r) < 0$ along the $z$-axis and antiferromagnetic couplings $J_{xy}(r)=-J_z(r)$ in the $xy$-plane, for arbitrary distances $r$) the sign problem present for algorithms operating in the $z$-basis can be solved within a recent ``operator-loop'' formulation of the stochastic series expansion method (a cluster algorithm for sampling the diagonal matrix elements of the power series expansion of ${\rm exp}(-βH)$ to all orders). The solution relies on identification of operator-loops which change the configuration sign when updated (``merons'') and is similar to the meron-cluster algorithm recently proposed by Chandrasekharan and Wiese for solving the sign problem for a class of fermion models (Phys. Rev. Lett. {\bf 83}, 3116 (1999)). Some important expectation values, e.g., the internal energy, can be evaluated in the subspace with no merons, where the weight function is positive definite. Calculations of other expectation values require sampling of configurations with only a small number of merons (typically zero or two), with an accompanying sign problem which is not serious. We also discuss problems which arise in applying the meron concept to more general quantum spin models with frustrated interactions.
description: 13 pages, 16 figures
Biomarkers predictive of treatment response in psoriasis and psoriatic arthritis: a systematic review.
Creators: name: Magee, Conor
name: Jethwa, Hannah
name: FitzGerald, Oliver M
name: Jadon, Deepak R
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Psoriasis
Therapeutics
Psoriatic Arthritis
Biological Therapy
Dmard
Drug Response Biomarkers

description: AimsThe ability to predict response to treatment remains a key unmet need in psoriatic disease. We conducted a systematic review of studies relating to biomarkers associated with response to treatment in either psoriasis vulgaris (PsV) or psoriatic arthritis (PsA).MethodsA search was conducted in PubMed, Embase and the Cochrane library from their inception to 2 September 2020, and conference proceedings from four major rheumatology conferences. Original research articles studying pre-treatment biomarker levels associated with subsequent response to pharmacologic treatment in either PsV or PsA were included.ResultsA total of 765 articles were retrieved and after review, 44 articles (22 relating to PsV and 22 to PsA) met the systematic review's eligibility criteria. One study examined the response to methotrexate, one the response to tofacitinib and all the other studies to biologic disease-modifying antirheumatic drugs (DMARDs). Whilst several studies examined the HLA-C*06 allele in PsV, the results were conflicting. Interleukin (IL)-12 serum levels and polymorphisms in the IL-12B gene show promise as biomarkers of treatment response in PsV. Most, but not all, studies found that higher baseline levels of C-reactive protein (CRP) were associated with a better clinical response to treatment in patients with PsA.ConclusionSeveral studies have identified biomarkers associated with subsequent response to treatment in psoriatic disease. However, due to the different types of biomarkers, treatments and outcome measures used, firm conclusions cannot be drawn. Further validation is needed before any of these biomarkers translate to clinical practice.