cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Shift boundary material pointmethod: an image-to-simulation workflow for solids of complex geometries undergoing large deformation
Creators: name: Liu, Chuanqi
name: Sun, WaiChing
Publisher: name: Columbia University
Year: 2019
Subjects: Materials science
Material point method
Granular materials
Solids
Deformations (Mechanics)--Mathematical models

description: We introduce a mathematical framework designed to enable a simple image-to-simulation workflow for solids of complex geometries in the geometrically nonlinear regime. While the material point method is used to circumvent the mesh distortion issues commonly exhibited in Lagrangian meshes, a shifted domain technique originated fromMain and Scovazzi (J Comput Phys 372:972–995, 2018) is used to represent the boundary conditions implicitly via a level set or signed distance function. Consequently, this method completely bypasses the need to generate high-quality conformal mesh to represent complex geometries and therefore allows modelers to select the space of the interpolation function without the constraints due to the geometric need. This important simplification enables us to simulate deformation of complex geometries inferred from voxel images. Verification examples on deformable body subjected to finite rotation have shown that the new shifted domain material
point method is able to generate frame-indifferent results. Meanwhile, simulations using micro-CT images of a Hostun sand have demonstrated that this method is able to reproduce the quasi-brittle damage mechanisms of single grain without the excessively concentrated nodes commonly displayed in conformal meshes that represent 3D objects with local fine details.
On-shell renormalization of neutralino and chargino mass matrices in R-parity violating models - Correlation between LSP decays and neutrino mixing angles revisited
Creators: name: Liebler, Stefan
name: Porod, Werner
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an on-shell renormalization scheme for the neutralino and chargino mass matrices for two R-parity violating models, namely bilinear R-parity violation and the munuSSM with one right-handed neutrino superfield. We discuss in both models how to obtain neutrino masses and mixing angles correctly as well as differences to the existing DRbar calculations. Both models predict correlations between neutrino mixing angles and ratios of R-parity violating decays such as neutralino_1 -> l W which can be tested for example at the LHC. We point out that there are cases where one has to include the complete NLO corrections for the decays neutralino_1 -> l W to predict reliably the correlations between neutrino- and collider-physics. Moreover, we discuss briefly the implementation of these decays in the public program CNNDecays.
description: 30 pages, 20 figures; minor corrections, published in Nuclear Physics B
Unlocking Doors: Inclusive Leadership in Stage Management
Creators: name: Dominguez, Caitlyn Annelise
Publisher: name: Columbia University
Year: 2019
Subjects: Theater
Performing arts
Stage management
Leadership
Diversity in the workplace
People with disabilities

description: As diversity in casting continues to be a topic of intense concentration, stage managers should expect to work with more diverse casts in the years to come. As differing identities in the rehearsal room become more commonplace, stage managers will be called upon to develop an interdisciplinary approach to our vocation; insights from identity studies can help bridge the gap between artists accustomed to homogeneity and artists belonging to historically underrepresented groups.
Specifically, this thesis draws upon academic texts and interviews with working theatre practitioners in order to provide an overview of the intersection between stage management and disability, as they currently relate to each other.
title: Влияние общественных волнений на обстановку внутри государства
Creators: name: Семенов, Максим
name: Степанова, Анна
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: На сегодняшний день всплески гражданской активности уже перестали описывать как редко происходящий феномен. Акции протеста, митинги, общественные недовольства и забастовки стали привычными для современного общества. Акции протеста и народные движения охватывают всё мировое сообщество. В большей мере причиной этого, конечно, являются вопросы, связанные с политическим устройством государства.
Описываемое в работе явление является повсеместно распространенным, охватывает весь мир. И, в связи с этим, требуется анализ и описание влияния данного феномена на государственный аппарат, в частности на положение государства относительно мирового сообщества.
Applications of Magnetic PsiDO Techniques to Space-adiabatic Perturbation Theory
Creators: name: De Nittis, Giuseppe
name: Lein, Max
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this review, we show how advances in the theory of magnetic pseudodifferential operators (magnetic $Ψ$DO) can be put to good use in space-adiabatic perturbation theory (SAPT). As a particular example, we extend results of [PST03] to a more general class of magnetic fields: we consider a single particle moving in a periodic potential which is subjectd to a weak and slowly-varying electromagnetic field. In addition to the semiclassical parameter $\eps \ll 1$ which quantifies the separation of spatial scales, we explore the influence of additional parameters that allow us to selectively switch off the magnetic field. We find that even in the case of magnetic fields with components in $C_b^{\infty}(\R^d)$, e. g. for constant magnetic fields, the results of Panati, Spohn and Teufel hold, i.e. to each isolated family of Bloch bands, there exists an associated almost invariant subspace of $L^2(\R^d)$ and an effective hamiltonian which generates the dynamics within this almost invariant subspace. In case of an isolated non-degenerate Bloch band, the full quantum dynamics can be approximated by the hamiltonian flow associated to the semiclassical equations of motion found in [PST03].
description: 32 pages
Выбор асинхронного двигателя для вентилятора тепловоза с обеспечением его устойчивой работы
Creators: name: Ханин Олег Олегович
name: Владимировна, Шевченко Валентина
Publisher: name: Zenodo
Year: 2016
Subjects: электрические машины
асинхронные двигатели
регулируемый электропривод
центробежные вентиляторы

description: На русском: [Ханин О.О., Шевченко В.В. Выбор асинхронного двигателя для вентилятора тепловоза с обеспечением его устойчивой работы // Материалы Х Международной научно-практической студенческой конференции магистрантов (05-08 апреля 2016 года), в 3-х частях, часть 2 (ISBN 978-617-05-0173-8), секция 9 "Электромеханические и электрические преобразователи". - Украина, Харьков: НТУ "ХПИ", 2016. - С. 148-149. https://doi.org/10.5281/zenodo.2593187]

Ключевые слова: электрические машины, регулируемый электропривод, асинхронные двигатели, центробежные вентиляторы.

Тезисы в репозитории НТУ "ХПИ" - открыть pdf, на CORE - открыть pdf.

Сборник в репозитории НТУ "ХПИ" - открыть pdf, на zenodo - скачать pdf.
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Coral Carbon Isotope Sensitivity to Growth Rate and Water Depth with Paleo-Sea Level Implications
Creators: name: Linsley, Braddock
name: Dunbar, Robert B.
name: Dassié, Emilie P.
name: Tangri, Neil
name: Wu, Henry C.
name: Brenner, Logan
name: Wellington, Gerard
Publisher: name: Columbia University
Year: 2019
Subjects: Corals
Atmospheric carbon dioxide
Sea level
Paleoceanography
Marine ecology

description: Reef building corals face an uncertain future due to the accelerating input of anthropogenic CO2 into the surface ocean, ocean acidification and from rising ocean temperatures. Coral skeletal carbon isotope ratios (13C/12) is one potential tool to understand both changes in coral growth processes over time and how corals are responding to the influx of anthropogenic CO2, but interpretation of coral 13C/12C data remains controversial. Here we show for the first time using multi-century long coral cores from a broad region of the South Pacific, that skeletal extension rate and skeletal 13C/12C had a strong inverse correlation that was stable over many centuries. However, our coral results also demonstrate the cessation of this relationship in the mid 20th century as a response to the influx of anthropogenic CO2. This fundamental conundrum suggests some change in the coral calcification process and could be related to coral reef decline in the 20th century. Our results also highlight the fundamental sensitivity of mean coral 13C/12C to endosymbiotic photosynthetic rate. We quantified the water depth effect on mean coral 13C/12C using different coral genera from the Indo-Pacific and Atlantic Oceans. This novel compilation reveals a large amplitude and significant trend towards lower skeletal 13C/12C as depth increases and light levels decrease in the upper 20m of the water column (1.4‰ decrease per 5m of depth). We discuss how this relationship could be used to improve the accuracy of sea level reconstructions using fossil corals and result in a better understanding of the relationship between past climatic forcing and sea level response.
Development of an Opioid Use Disorder Cascade of Care to Address the Addiction Treatment Gap
Creators: name: Williams, Arthur
name: Nunes Jr, Edward V.
name: Bisaga, Adam
name: Levin, Frances R.
name: Olfson, Mark
Publisher: name: Columbia University
Year: 2019
Subjects: Opioid abuse--Treatment
Medical care
Health planning
Public health

description: Amid worsening opioid overdose death rates, the nation continues to face a persistent addiction treatment gap limiting access to quality care for opioid use disorder (OUD). Three FDA-approved medications (methadone, buprenorphine, and extended-release naltrexone) have high quality evidence demonstrating reductions in drug use and overdose events, but most individuals with OUD do not receive them. The development of a unified public health framework, such as a Cascade of Care, could improve system level practice and treatment outcomes. In response to feedback from many stakeholders over the past year, we have expanded upon the OUD treatment cascade, first published in 2017, with additional attention to prevention stages and both individual-level and population-based services to better inform efforts at the state and federal level. The proposed cascade framework has attracted considerable interest from federal agencies including the Centers for Disease Control and Prevention (CDC) and National Institute on Drug Abuse (NIDA) along with policy-makers nationwide. We have reviewed recent literature and evidence-based interventions related to prevention, identification, and treatment of individuals with OUD and modeled updated figures from the 2016 National Survey on Drug Use and Health. Many currently employed interventions (prescriber guidelines, prescription monitoring programs, naloxone rescue) address prevention of OUD or downstream complications but not treatment of the underlying disorder itself. An OUD Cascade of Care framework could help structure local and national efforts to combat the opioid epidemic by identifying key targets, interventions, and quality indicators across populations and settings to achieve these ends. Improved data collection and reporting methodology will be imperative.
Real-time Continuous Glucose Monitoring Outperforms Blood Glucose Meters in Predicting Diabetes Risk Among Children with Acanthosis Nigricans: A Nine-Month Observational Study
Creators: name: MUSTAMU, ALVA CHERRY
name: Susanti, Susanti
name: Maria Orizani, Chindy
name: Budi Kristiani, Rina
name: Iswati, Iswati
name: Nobel Bistara, Difran
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 400308
subject: Medical devices
classificationCode: 390110
subject: Medicine, nursing and health curriculum and pedagogy

description: Background: The rising prevalence of diabetes mellitus in children necessitates precise glucose monitoring for early detection and intervention. Blood Glucose Meters (BGM) and Continuous Glucose Monitoring (CGM) are widely used, yet their effectiveness in predicting diabetes onset in at-risk paediatric populations remains debated. This study aimed tocompare BGM and CGM in predicting diabetes risk among children with Acanthosis Nigricans (AN) and elevated FINDRISC scores.Methods: A quasi-experimental study was conducted at the Health Polytechnic of the Ministry of Health Sorong over nine months (January–September 2024), involving 76 children aged 10–18 years. Participants were assigned to either the BGM group (measurements every three days) or the CGM group (continuous monitoring every 15 minutes). Key parameters included Time in Range (TIR), mean glucose levels, hypoglycaemia and hyperglycaemia episodes, and adherence rates.Results: CGM demonstrated superior performance, with a significantly higher TIR (78.9% vs. 63.4%, p<0.001), lower mean glucose levels (145.3 vs. 162.7 mg/dL, p=0.003), and fewer hypoglycaemia (1.1 vs. 2.8, p=0.015) and hyperglycaemia episodes (2.6 vs. 4.5, p=0.002). CGM users also exhibited higher adherence (88.7% vs. 71.3%, p<0.001) and greater accuracy, as indicated by a lower Mean Absolute Relative Difference (MARD) (7.2% vs. 10.8%, p=0.004).Conclusions: CGM outperforms BGM in predicting diabetes onset in at-risk children, offering improved glycaemic control and adherence. These findings support CGM as the preferred glucose monitoring method for paediatric populations at risk of diabetes
Jurassic Monster Polar Shift Confirmed by Sequential Paleopoles From Adria, Promontory of Africa
Creators: name: Muttoni, Giovanni
name: Kent, Dennis V.
Publisher: name: Columbia University
Year: 2019
Subjects: Paleomagnetism
Polar wandering
Jurassic Geologic Period

description: Jurassic paleomagnetic data from North America have long been contentious, generating ambiguities in the shape of the global‐composite apparent polar wander path. Here we show from a restudy of two subdivisions of the Late Jurassic Morrison Formation at the classic locality at Norwood on the Colorado Plateau that the derived paleopoles reflect variable overprinting probably in the Cretaceous and are of limited value for apparent polar wander determination. We instead assembled an updated set of Jurassic paleopoles from parauthocthonous Adria, the African promontory, using primary paleomagnetic component directions derived from stratigraphically superposed intervals and corrected for sedimentary inclination error. These paleopoles are found to be in superb agreement with independent igneous paleopoles from the literature across the so‐called Jurassic monster polar shift, which in North American coordinates is a jump of ~30° arc distance from the 190‐ to 160‐Ma stillstand pole at 79.5°N 104.8°E to a 148 ± 3.5‐Ma pole at 60.8°N 200.6°E defined by four Adria sedimentary paleopoles and the published Ithaca, Hinlopenstretet, and Swartsruggens‐Bumbeni igneous paleopoles. The implied high rate of polar motion of ~2.5°/Myr across the monster shift is compatible with maximum theoretical estimates for true polar wander. We include a critique of published Jurassic paleomagnetic data that have been variably used in reference APWPs but that as a result of their low quality muted the real magnitude of the Jurassic monster shift. Finally, we provide paleocontinental reconstructions to describe examples of the bold signature that the monster polar shift left in the distribution of climate‐sensitive sedimentary facies worldwide.
SARS-COV-2 virus and food
Creators: name: National Committee For Food Safety
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Italy
subject: Opinion
subject: Coronaviridae
subject: foods
subject: packaging
subject: http://id.agrisemantics.org/gacs/C14734
subject: http://id.agrisemantics.org/gacs/C540
subject: http://id.agrisemantics.org/gacs/C1915

description: Italian National Committee for Food Safety (CNSA) opinion of 9 MARCH 2021 on SARS-COV-2 virus and food In the light of the importance and topicality of the subject, and considering the specific requests for clarification made by the Advisory Section of Consumer and Producer Associations and by other stakeholders, the Food Safety Section deemed it appropriate to carry out an analysis of current knowledge concerning the relationship between viruses and food. Based on the existing international studies, pending possible subsequent modifications and/or clarifications, it can be concluded that there is no scientific evidence to suggest that the SARS-CoV-2 virus is transmitted via food through raw or cooked food. Under normal conditions, there is no evidence yet that contaminated packaging transmits the infection, and the risk of SARS-CoV-2 infection through food contact materials, packaging and surfaces appears negligible. The most important preventive measures to be applied by workers involved in food distribution and sales are physical distancing, good personal hygiene with frequent hand washing and the application of general food hygiene rules. Consumers should be reminded that when shopping, it is good practice to keep a distance of at least 1.5 metres from one another, sanitise the shopping cart or basket, sanitise their hands before and after using the shopping cart or basket and/or protect hands with gloves to be disposed of in special containers after shopping, as well as to use a properly worn mask for all the time spent in the supermarket. At home, there is no need to sanitise food packaging, but it is necessary to wash hands after handling packages. While temperatures used for cooking are sufficient to inactivate the coronavirus, refrigeration and freezing temperatures do not appear to cause a reduction in the viability of the virus. Washing with only drinking water appears to be sufficient to sanitise fruit and vegetables.
description: IT; it; pdf; o.pinto@sanita.it
ResourceApp – Entwicklung eines mobilen Systems zur Erfassung  und  Erschließung  von  Ressourceneffizienzpotenzialen beim Rückbau von Infrastruktur und Produkten
Creators: name: Volk, Rebekka
name: Sevilmis, Neyir
name: Stier, Christian
name: Bayha, Ansilla
Publisher: name: Karlsruhe
Year: 2016

description: Der  Anteil  an  Bau-  und  Abbruchabfällen  beträgt  mit  rund  200  Mio. t  mehr  als  50 %  der  
jährlich anfallenden Abfälle in Deutschland [Statistik Portal 2015]. Dabei sind Rückbau- und 
Abbruchprojekte durch einen großen Zeit- und Kostendruck gekennzeichnet. Bei der heute 
üblichen Erfassung von Rückbauobjekten durch Begehung werden die verbauten, oft wert-
haltigen Materialien grob geschätzt, was zu einer großen Abweichung zur tatsächlichen Mate-
rialzusammensetzung führen kann. Dennoch dienen diese Schätzwerte zurzeit als Grundlage 
für das Angebot und die Projekt- und Verwertungsplanung der Rückbauunternehmer.
Im Projekt ResourceApp wurde ein Demonstrator entwickelt, der erstmals die mobile, drei-
dimensionale  (3D)  und  semantische  Erfassung  von  Gebäuden  und  Bauteilen  und  eine  an-
schließende Umbau- oder Rückbauplanung in Echtzeit ermöglicht. 
Das System besteht aus einem Sensor und Software-Modulen auf einem Laptop, die die Da-
tenverarbeitung der Sensordaten erlauben, um das Rohstoffpotenzial eines Gebäudes zu be-
stimmen und dessen Rückbau zu planen. Für das Gebäudeaudit wird der Innenraum erfasst 
und in 3D rekonstruiert sowie dessen Inventar bestimmt. Notwendige Rückbaumaßnahmen 
zur Wiedergewinnung der Rohstoffe werden ermittelt und geplant und daraus die Rückge-
winnungskosten der Materialien bestimmt.
Im Fall des Praxistests, des Krankenhauses von Bad Pyrmont, wurde das Gebäude mit dem 
Sensor aufgenommen, automatisiert inventarisiert und nach der Begehung rückgebaut. In der 
Praxis war es möglich, große Bauteile (Wände, Decken, Böden, Türen, Fenster) mit der App 
zu erkennen. Aufgrund schwieriger Raumgeometrien (kleine, verwinkelte und langgestreckte 
gleichförmige Räume), die die Aufnahme mit dem Kinect-Sensor erschwerten, konnten aber 
ca. 20 % der großen Bauteile nicht erkannt werden. Zudem konnte ein Großteil der zu erken-
nenden Anschlüsse (wie Steckdosen), die Rückschlüsse auf die technische Gebäudeausstattung und somit auf die werthaltigen Rohstoffe des Gebäudes geben sollten, nicht erkannt werden. 
Hier besteht weiterer erheblicher Forschungsbedarf, da die eingesetzten Sensoren eine noch 
nicht ausreichende Auflösung aufweisen. 
Koordiniert wurde das Projekt ResourceApp vom Fraunhofer-Institut für Chemische Tech-
nologie ICT. Weitere Partner waren das Fraunhofer-Institut für Graphische Datenverarbei-
tung IGD, das Institut für Industriebetriebslehre und Industrielle Produktion IIP des Karlsru-
her Instituts für Technologie KIT, die Abbruch- bzw. Sanierungsunternehmen Werner Otto 
GmbH und COSAWA Sanierung GmbH sowie das Umwelt-Beratungsbüro GPB Arke.
Disorder overtakes Order in Information Concentration over Quantum Networks
Creators: name: Prabhu, R.
name: Pradhan, Saurabh
name: De, Aditi Sen
name: Sen, Ujjwal
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider different classes of quenched disordered quantum XY spin chains, including quantum XY spin glass and quantum XY model with a random transverse field, and investigate the behavior of genuine multiparty entanglement in the ground states of these models. We find that there are distinct ranges of the disorder parameter that gives rise to a higher genuine multiparty entanglement than in the corresponding systems without disorder -- an order-from-disorder in genuine multiparty entanglement. Moreover, we show that such a disorder-induced advantage in the genuine multiparty entanglement is useful -- it is almost certainly accompanied by a order-from-disorder for a multiport quantum dense coding capacity with the same ground state used as a multiport quantum network.
description: v1: 11 pages, 7 figures, REVTeX 4; v2: published version, minor additions, 12 pages, 9 figures
Medieval Climate in the Eastern Mediterranean: Instability and Evidence of Solar Forcing
Creators: name: Kushnir, Yochanan
name: Stein, Mordechai
Publisher: name: Columbia University
Year: 2019
Subjects: Climatic changes
Paleoclimatology
Civilization, Medieval
Climate and civilization

description: This paper examines the hydroclimate history of the Eastern Mediterranean (EM) region during the 10th to 14th centuries C.E., a period known as the Medieval Climate Anomaly (MCA), a time of significant historical turmoil and change in the region. The study assembles several regional hydroclimatic archives, primarily the Dead Sea reconstructed lake level curve together with the recently extracted deep-lake sediment record, the Soreq Cave speleothem record and its counterpart, the EM marine sediment record and the Cairo Nilometer record of annual maximum summer flood levels in lower Egypt. The Dead Sea record is a primary indicator of the intensity of the EM cold-season storm activity while the Nilometer reflects the intensity of the late summer monsoon rains over Ethiopia. These two climate systems control the annual rainfall amounts and water availability in the two regional breadbaskets of old, in Mesopotamia and Egypt. The paleoclimate archives portray a variable MCA in both the Levant and the Ethiopian Highlands with an overall dry, early-medieval climate that turned wetter in the 12th century C.E. However, the paleoclimatic records are markedly punctuated by episodes of extreme aridity. In particular, the Dead Sea displays extreme low lake levels and significant salt deposits starting as early as the 9th century C.E. and ending in the late 11th century. The Nile summer flood levels were particularly low during the 10th and 11th centuries, as is also recorded in a large number of historical chronicles that described a large cluster of droughts that led to dire human strife associated with famine, pestilence and conflict. During that time droughts and cold spells also affected the northeastern Middle East, in Persia and Mesopotamia. Seeking an explanation for the pronounced aridity and human consequences across the entire EM, we note that the 10th–11th century events coincide with the medieval Oort Grand Solar Minimum, which came at the height of an interval of relatively high solar irradiance. Bringing together other tropical and Northern Hemisphere paleoclimatic evidence, we argue for the role of long-term variations in solar irradiance in shaping the early MCA in the EM and highlight their relevance to the present and near-term future.
title: Entwicklung eines Model Generators für private Haushalte auf Basis der IWU-Gebäudetypolgoie als Grundlage für EnergyPlus Gebäudesimulationen
Creators: name: Eller, Christian
Publisher: name: UNSPECIFIED
Year: 2021

description: Durch die europaweite Einführung der Smart-Meter Zähler, ist es möglich individuelle Energieverbrauchsdaten automatisiert messen zu können. Somit stehen in Zukunft detaillierte Energieverbräuche im privaten Haushalt zur Verfügung, die verwendet werden könne, um individuelle Energiesimulationen im Gebäudebestand durchführen zu können. In diesem Zusammenhang beschreibt dieses Paper die Entwicklung einer Software, die es ermöglicht simulationsfähige Modelle von Einfamilienhäusern zu erstellen, um reale Simulationen über Energie- und Heizverbräuche zu tätigen. Die OpenStudio C#-API wurde verwendet, um ein Modell mit Konstruktionen, verschiedenen Räumen, Bewohnern, Heizanlage, elektronischen Geräten und Lichtern zu generieren. Die Eingabe des Nutzers konnte durch eine große Datenbank auf die Information des Gebäudetyps und Baujahr reduziert werden. Die Kompatibilität mit EnergyPlus wurde hergestellt und die Ergebnisse in OpenStudio veranschaulicht und verglichen. So konnte gezeigt werden, dass es möglich ist, mit der Verwendung der IWU-Gebäudetypologie, einen Generator zu erzeugen, der simulationsfähige Modelle entwickelt, welche aussagekräftige Ergebnisse liefern. Dazu sind vom Nutzer keine Fachkenntnisse in Bezug auf Baukonstruktion, energetische Berechnungen, Softwareprogrammierung oder der Simulationssoftware EnergyPlus notwendig.
Semidirect product gauge group $[SU(3)_{\rm c} \times SU(2)_{\rm L}]\rtimes U(1)_{\rm Y}$ and quantization of hypercharge
Creators: name: Hattori, Chuichiro
name: Matsunaga, Mamoru
name: Matsuoka, Takeo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the Standard Model the hypercharges of quarks and leptons are not determined by the gauge group $SU(3)_{\rm c} \times SU(2)_{\rm L} \times U(1)_{\rm Y}$ alone. We show that, if we choose the semidirect product group $[SU(3)_{\rm c} \times SU(2)_{\rm L}] \rtimes U(1)_{\rm Y}$ as its gauge group, the hyperchages are settled to be $n/6 \mod {\mathbb{Z}}\;(n = 0,1,3,4) $. In addition, the conditions for gauge-anomaly cancellation give strong constraints. As a result, the ratios of the hypercharges are uniquely determined and the gravitational anomaly is automatically canceled. The standard charge assignment to quarks and leptons can be properly reproduced. For exotic matter fields their hypercharges are also discussed.
description: 17 pages, 2 tables; LaTeX; typos corrected, references added or replaced, argument in Secs. 2 and 3 revised, results unchanged; to be published in Phys. Rew. D
Performance evaluation of closed-loop logistics systems with generally distributed service times
Creators: name: Epp, Martin
name: Pagani, Paolo
name: Stoll, Judith
name: Scherer, Sebastian
name: Rohlehr, Carsten
name: Furmans, Kai
Publisher: name: Karlsruhe
Year: 2016
Subjects: Performance evaluation
Queueing networks
Closed-loop
General service process
Cycle time distribution
Hospital logistics

description: The performance evaluation of hospital logistics is becoming more and more important to guarantee efficient services in health establishments. Therefore, we propose a new discrete-time approach for the steady-state analysis of closed-loop queueing systems with arbitrary topology and generally distributed service times. Based on a ﬁnite Markov chain, it is possible to compute the complete cycle time distribution of service systems with a population constraint. In addition, the distribution of the number of customers at each service station can be obtained. The method is applied to the analysis of a sterilization process of medical devices. To verify the method, we compare the results of our discrete-time approach to the results that are obtained by a simulation model.
THERMAL MODERN PROCESSING  OF MICROALLOYED TOOL STEEL
Creators: name: O.A. Kletsova
name: N.V. Firsova
name: S.N. Sergienko
Publisher: name: Zenodo
Year: 2023

description: In this paper, laboratory studies were carried out in the field of heat treatment of one of the most promising microalloyed tool steels today. The main value of this research work lies in the implementation of a new and little-studied approach to heat treatment, known as thermal modern processing (TVO). The selected microalloyed steel has never been subjected to such heat treatment before, which makes the obtained studies unique and significant. The results of the research have made an incommensurable contribution to the study of the processes occurring inside the metal during the TVO. The obtained results open up new opportunities for research and analysis, providing a wide range of data for further experiments.
Quantum Interference between a Single-Photon Fock State and a Coherent State
Creators: name: Windhager, Armin
name: Suda, Martin
name: Pacher, Christoph
name: Peev, Momtchil
name: Poppe, Andreas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive analytical expressions for the single mode quantum field state at the individual output ports of a beam splitter when a single-photon Fock state and a coherent state are incident on the input ports. The output states turn out to be a statistical mixture between a displaced Fock state and a coherent state. Consequently we are able to find an analytical expression for the corresponding Wigner function. Because of the generality of our calculations the obtained results are valid for all passive and lossless optical four port devices. We show further how the results can be adapted to the case of the Mach-Zehnder interferometer. In addition we consider the case for which the single-photon Fock state is replaced with a general input state: a coherent input state displaces each general quantum state at the output port of a beam splitter with the displacement parameter being the amplitude of the coherent state.
description: 9 pages, 6 figures
Top polarization, forward-backward asymmetry and new physics
Creators: name: Choudhury, Debajyoti
name: Godbole, Rohini M.
name: Rindani, Saurabh D.
name: Saha, Pratishruti
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider how the measurement of top polarization at the Tevatron can be used to characterise and discriminate among different new physics models that have been suggested to explain the anomalous top forward-backward asymmetry reported at the Tevatron. This has the advantage of catching the essence of the parity violating effect characteristic to the different suggested new physics models. Other observables constructed from these asymmetries are shown to be useful in discriminating between the models, even after taking into account the statistical errors. Finally, we discuss some signals at the 7 TeV LHC.
description: Version published in Physical Review D
Holographic Roberge-Weiss Transitions II: Defect Theories and the Sakai-Sugimoto Model
Creators: name: Rafferty, James
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We extend the work of Aarts et al., including an imaginary chemical potential for quark number into the Sakai-Sugimoto model and codimension k defect theories. The phase diagram of these models are a function of three parameters, the temperature, chemical potential and the asymptotic separation of the flavour branes, related to a mass for the quarks in the boundary theories. We compute the phase diagrams and the pressure due to the flavours of the theories as a function of these parameters and show that there are Roberge-Weiss transitions in the high temperature phases, chiral symmetry restored for the Sakai-Sugimoto model and deconfined for the defect models, while at low temperatures there are no Roberge-Weiss transitions. In all the models we consider the transitions between low and high temperature phases are first order, hence the points where they meet the Roberge-Weiss lines are triple points. The pressure for the defect theories scales in the way we expect from dimensional analysis while the Sakai-Sugimoto model exhibits unusual scaling. We show that the models we consider are analytic in μ^2 when μ^2 is small.
description: 39 pages, 12 figures. references added, Sakai-Sugimoto section revised, version to appear in JHEP
Bosonic and fermionic dipoles on a ring
Creators: name: Zöllner, Sascha
name: Bruun, G. M.
name: Pethick, C. J.
name: Reimann, S. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that dipolar bosons and fermions confined in a quasi-one-dimensional ring trap exhibit a rich variety of states because their interaction is inhomogeneous. For purely repulsive interactions, with increasing strength of the dipolar coupling there is a crossover from a gas-like state to an inhomogeneous crystal-like one. For small enough angles between the dipoles and the plane of the ring, there are regions with attractive interactions, and clustered states can form.
description: 4 pages, 6 figures
Searching for z~7.7 Lyman Alpha Emitters in the COSMOS Field with NEWFIRM
Creators: name: Krug, Hannah
name: Veilleux, Sylvain
name: Tilvi, Vithal
name: Malhotra, Sangeeta
name: Rhoads, James
name: Hibon, Pascale
name: Swaters, Rob
name: Probst, Ron
name: Dey, Arjun
name: Dickinson, Mark
name: Jannuzi, Buell T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The study of Ly-alpha emission in the high-redshift universe is a useful probe of the epoch of reionization, as the Ly-alpha line should be attenuated by the intergalactic medium (IGM) at low to moderate neutral hydrogen fractions. Here we present the results of a deep and wide imaging search for Ly-alpha emitters in the COSMOS field. We have used two ultra-narrowband filters (filter width of ~8-9 °A) on the NEWFIRM camera, installed on the Mayall 4m telescope at Kitt Peak National Observatory, in order to isolate Ly-alpha emitters at z = 7.7; such ultra-narrowband imaging searches have proved to be excellent at detecting Ly-alpha emitters. We found 5-sigma detections of four candidate Ly-alpha emitters in a survey volume of 2.8 x 10^4 Mpc^3 (total survey area ~760 arcmin^2). Each candidate has a line flux greater than 8 x 10^-18 erg s^-1 cm^-2. Using these results to construct a luminosity function and comparing to previously established Ly-alpha luminosity functions at z = 5.7 and z = 6.5, we find no conclusive evidence for evolution of the luminosity function between z = 5.7 and z = 7.7. Statistical Monte Carlo simulations suggest that half of these candidates are real z = 7.7 targets, and spectroscopic follow-up will be required to verify the redshift of these candidates. However, our results are consistent with no strong evolution in the neutral hydrogen fraction of the IGM between z = 5.7 and z = 7.7, even if only one or two of the z = 7.7 candidates are spectroscopically confirmed.
description: 29 pages, 5 figures, accepted to ApJ (12/11)
Generation of a sexually dimorphic neuronal population in Drosophila
Creators: name: Garner, Sarah Rose C.
Publisher: name: University of British Columbia
Year: 2018

description: Differences in the number, morphology and function of neurons between the sexes underlie sexually dimorphic behaviours and physiology. In Drosophila, neuronal sexual dimorphism is determined by the sex determination cascade, most of which occurs downstream of Transformer (Tra). Tra is only expressed in females where it splices the sex determination effectors, fruitless (fru) and doublesex (dsx), into female-specific isoforms (non-coding fruF and coding dsxF transcripts). In males, Tra is not expressed, which leads to default splicing of fru and dsx into male-specific isoforms (coding fruM and dsxM transcripts). Sex-specific isoforms of Fru and Dsx direct most, if not all, sex differences during development of the nervous system. The development of the male nervous system has been well-studied, whereas the mechanisms that give rise to female-specific dimorphisms have been less researched. We used a subset of insulin-like peptide 7 (Ilp7)-expressing neurons as a model for studying the development of neuronal sex differences. These neurons express fru but not dsx, and innervate the reproductive organs. Using a genetic approach, we found novel roles for tra and fru in generating a female-specific ventral subset of Ilp7 neurons (FS-Ilp7 neurons). We found FruM-dependent male-specific programmed cell death (PCD) of FS-Ilp7 neurons underlies their female-specific generation. Furthermore, we found that FruM is necessary for serotonergic differentiation and for proper axonal targeting of Ilp7 neurons in males. In females, we show that forcing male-specific splicing of fru is insufficient to trigger PCD, because, unexpectedly, Tra prevents FruM-dependent PCD in two ways to ensure FS-Ilp7 neuronal survival; not only does Tra act canonically in fru splicing, but it also acts non-canonically in parallel or downstream of fru splicing to block fruM-dependent PCD. We conclude that FruM controls both neuronal numbers via PCD and arborization in post-embryonic Ilp7 neurons, and that Tra plays a novel failsafe function in females to establish and then reinforce the decision to generate female-specific neurons.
Does Treewidth Help in Modal Satisfiability?
Creators: name: Praveen, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Computational Complexity (cs.CC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: F.2.2; F.4.1

description: Many tractable algorithms for solving the Constraint Satisfaction Problem (CSP) have been developed using the notion of the treewidth of some graph derived from the input CSP instance. In particular, the incidence graph of the CSP instance is one such graph. We introduce the notion of an incidence graph for modal logic formulae in a certain normal form. We investigate the parameterized complexity of modal satisfiability with the modal depth of the formula and the treewidth of the incidence graph as parameters. For various combinations of Euclidean, reflexive, symmetric and transitive models, we show either that modal satisfiability is FPT, or that it is W[1]-hard. In particular, modal satisfiability in general models is FPT, while it is W[1]-hard in transitive models. As might be expected, modal satisfiability in transitive and Euclidean models is FPT.
description: Full version of the paper appearing in MFCS 2010. Change from v1: improved section 5 to avoid exponential blow-up in formula size
Plasma walls beyond the perfect absorber approximation for electrons
Creators: name: Bronold, Franz X.
name: Heinisch, Rafael L.
name: Marbach, Johannes
name: Fehske, Holger
Publisher: name: arXiv
Year: 2010
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Plasma walls accumulate electrons more efficiently than ions leading to wall potentials which are negative with respect to the plasma potential. Theoretically, walls are usually treated as perfect absorber for electrons and ions implying perfect sticking of the particles to the wall and infinitely long desorption times for particles stuck to the wall. For electrons we question the perfect absorber model and calculate, specifically for a planar dielectric wall, the electron sticking coefficient $s_e$ and the electron desorption time $τ_e$. For the uncharged wall we find $s_e\ll 1$ and $τ_e\approx 10^{-4}s$. Thus, in the early stage of the build-up of the wall potential, when the wall is essentially uncharged, the wall is not a perfect absorber for electrons. For the charged wall we find $τ_e^{-1}\approx 0$. Thus, $τ_e$ approaches the perfect absorber value. But $s_e$ is still only of the order of $10^{-1}$. Calculating $s_e$ as a function of the wall potential and combining this expression with the quasi-stationary balance equations for the electron and ion surface densities we find the selfconsistent wall potential, including surface effects, to be 30% of the perfect absorber value.
description: 8 pages, 5 figures, published version
Taxonomy and epidemiology of Pectobacterium and Dickeya spp. in Europe, North America and South Africa
Creators: name: Pel, Chiel
Publisher: name: Zenodo
Year: 2021
Subjects: Euphresco, plant health, taxonomy, epidemiology, genomics, diagnostics, Pectobacterium, Dickeya

description: Slide of the Euphresco project 2020-F-336 'Taxonomy and epidemiology of Pectobacterium and Dickeya spp, in Europe, North America and South Africa'
description: Project funded through the Euphresco network
Validity of the scattering length approximation in strongly interacting Fermi systems
Creators: name: Zhou, S. Q.
name: Ceperley, D. M.
name: Zhang, Shiwei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the energy spectrum of systems of two, three and four spin-1/2 fermions with short range attractive interactions both exactly, and within the scattering length approximation. The formation of molecular bound states and the ferromagnetic transition of the excited scattering state are examined systematically as a function of the 2-body scattering length. Identification of the upper branch (scattering states) is discussed and a general approach valid for systems with many particles is given. We show that an adiabatic ferromagnetic transition occurs, but at a critical transition point kF a much higher than predicted from previous calculations, almost all of which use the scattering length approximation. In the 4-particle system the discrepancy is a factor of 2. The exact critical interaction strength calculated in the 4-particle system is consistent with that reported by experiment. To make comparisons with the adiabatic transition, we study the quench dynamics of the pairing instability using the eigenstate wavefunctions.
description: 7 pages, 7 figures
Modernizing College Course Placement by Using Multiple Measures
Creators: name: Mazzariello, Amy N.
name: Ganga, Elizabeth Claire
Publisher: name: Columbia University
Year: 2019
Subjects: Community colleges
Universities and colleges--Entrance examinations
College entrance achievement tests
Ability grouping in education

description: Colleges have traditionally placed students into developmental courses based on their performance on standardized tests. But research shows these placement tests are poor predictors of students' success in college-level classes, and as many as one-in-three test takers is placed incorrectly. Most of the misplaced students are assigned to developmental courses that are below their ability and whose credits do not count toward a degree. As a result, these students encounter an unnecessary hurdle on their path to graduation and their progress is potentially blocked altogether.

Meanwhile, studies have found that alternative measures such as high school GPA are significantly better predictors of which students will succeed in college-level courses. Combining high school GPA with other measures including state graduation tests, writing assessments, and noncognitive assessments yields more predictive power, according to the studies. This approach, often called multiple measures placement, is gaining traction at colleges across the country, and more than half of community colleges use measures other than standardized tests to assess academic readiness.
A complete algebraic reduction of one-loop tensor Feynman integrals
Creators: name: Fleischer, J.
name: Riemann, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We set up a new, flexible approach for the tensor reduction of one-loop Feynman integrals. The 5-point tensor integrals up to rank R=5 are expressed by 4-point tensor integrals of rank R-1, such that the appearance of the inverse 5-point Gram determinant is avoided. The 4-point tensor coefficients are represented in terms of 4-point integrals, defined in $d$ dimensions, $4-2ε\le d \le 4-2ε+2(R-1)$, with higher powers of the propagators. They can be further reduced to expressions which stay free of the inverse 4-point Gram determinants but contain higher-dimensional 4-point integrals with only the first power of scalar propagators, plus 3-point tensor coefficients. A direct evaluation of the higher dimensional 4-point functions would avoid the appearance of inverse powers of the Gram determinants completely. The simplest approach, however, is to apply here dimensional recurrence relations in order to reduce them to the familiar 2- to 4-point functions in generic dimension $d = 4-2\eps$, introducing thereby coefficients with inverse 4-point Gram determinants up to power $R$ for tensors of rank $R$. For small or vanishing Gram determinants - where this reduction is not applicable - we use analytic expansions in positive powers of the Gram determinants. Improving the convergence of the expansions substantially with Padé approximants we close up to the evaluation of the 4-point tensor coefficients for larger Gram determinants. Finally, some relations are discussed which may be useful for analytic simplifications of Feynman diagrams.
description: 57 pages, 3 figures, 2 tables; extended version; typo in equation (4.67) corrected, reference [20] added; reorganisation of text for journal publication