cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Acute regional changes in myocardial strain may predict ventricular remodelling after myocardial infarction in a large animal model
Creators: name: Mansell, D. S.
name: Bruno, V. D.
name: Sammut, E.
name: Chiribiri, A.
name: Johnson, T.
name: Khaliulin, I.
name: Lopez, D. Baz
name: Gill, H. S.
name: Fraser, K. H.
name: Murphy, M.
name: Krieg, T.
name: Suleiman, M. S.
name: George, S.
name: Ascione, R.
name: Cookson, A. N.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/692/4019/592
/692/308/1426
/692/308/575
/692/53/2422
/692/700/1421/1628
/631/1647/2067
/631/114/2397
article

description: Funder: EPSRC DTP
description: Funder: Developmental pathway funding scheme (DPFS)
description: Abstract: To identify predictors of left ventricular remodelling (LVR) post-myocardial infarction (MI) and related molecular signatures, a porcine model of closed-chest balloon MI was used along with serial cardiac magnetic resonance imaging (CMRI) up to 5–6 weeks post-MI. Changes in myocardial strain and strain rates were derived from CMRI data. Tissue proteomics was compared between infarcted and non-infarcted territories. Peak values of left ventricular (LV) apical circumferential strain (ACS) changed over time together with peak global circumferential strain (GCS) while peak GLS epicardial strains or strain rates did not change over time. Early LVR post-MI enhanced abundance of 39 proteins in infarcted LV territories, 21 of which correlated with LV equatorial circumferential strain rate. The strongest associations were observed for D-3-phosphoglycerate dehydrogenase (D-3PGDH), cysteine and glycine-rich protein-2, and secreted frizzled-related protein 1 (sFRP1). This study shows that early changes in regional peak ACS persist at 5–6 weeks post-MI, when early LVR is observed along with increased tissue levels of D-3PGDH and sFRP1. More studies are needed to ascertain if the observed increase in tissue levels of D-3PGDH and sFRP1 might be casually involved in the pathogenesis of adverse LV remodelling.
Quirico Filopanti professore di Meccanica Applicata e il corso di Meccanica Applicata da lui tenuto nell'Università di Bologna dal 1848 al 1850 e dal 1862 al 1864 
(nei 150 anni dell’unità d’Italia)
Creators: name: Molari, Pier Gabriele
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: ING-IND/14 Progettazione meccanica e costruzione di macchine
M-STO/05 Storia della scienza e delle tecniche

description: Il professore Giuseppe Barilli (n. Budrio 1812- m. Bologna 1894), più noto come Quirico Filopanti, come decise di farsi chiamare dal 1835, è molto conosciuto per la sua attività politica nel periodo Risorgimentale; minori attenzioni sono state rivolte alla sua attività di docente all’Università di Bologna.
Una ricerca condotta direttamente sui documenti originali permette di conoscere i contenuti e le modalità con le quali teneva il Corso di Meccanica applicata. Questo insegnamento appare, in largo anticipo sui tempi, come un vero corso di ingegneria dato che coniuga il rigore scientifico al proposito costruttivo. 
Si passano rapidamente in rassegna alcuni lavori descrivendoli, per quanto possibile, attraverso le sue parole.
Il lavoro termina con un elenco completo delle sue opere a stampa..
Additional file 1 of Transcutaneous electrical acupuncture stimulation (TEAS) for gastrointestinal dysfunction in adults undergoing abdominal surgery: study protocol for a prospective randomized controlled trial
Creators: name: Bai, Ya-Fan
name: Gao, Chao
name: Li, Wen-Jing
name: Du, Yi
name: An, Li-Xin
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Additional file 1. Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) 2013 Checklist.
Thermal Memory Effects on the Linearity of
a GaAs PHEMT
Creators: name: Accillaro, C.
name: Cidronali, A.
name: Zani, F.
name: Loglio, G.
name: Usai, M.
name: Collodi, G.
name: Camprini, M.
name: Magrini, I.
name: Manes, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: This paper presents a comprehensive
treatment of the nonlinear electro-thermal memory
effect arising in a GaAs PHEMT. In particular is
demonstrated the way with which the pure nonlinear
electrical effect and the electro-thermal one combine
and in turn determine a dispersive third-order
intermodulation. The analysis is based on an accurate
distributed model modified in order to take into
account for the dynamic thermal behaviour under
large signal operation. The results show a reduction
of the intermodulation product in response to a
reduction of the two tones frequency spacing, in
agreement with the analytical treatment.
Prävalenz von postoperativen Delirzuständen : eine prospektive Kohortenstudie
Creators: name: Trommler, Kathrin
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: Delirium
subject: Postoperative Phase
subject: 617.96041

description: Das Auftreten von kognitiven Defiziten und deliranten Symptomen nach Eingriffen unter Allgemeinanästhesien ist seit längerem Gegenstand wissenschaftlicher Untersuchungen. Da Delirien im Rahmen eines Krankenhausaufenthaltes mit erhöhter Morbidität und Letalität einhergehen sowie die Krankenhausliegedauer erhöhen, wurden verschiedene prädisponierende und präzipitierende Faktoren ermittelt und Vermeidungsstrategien entwickelt. In der Literatur finden sich unterschiedliche Angaben über das Auftreten deliranter Symptome während der Nachbeobachtungsphase im Aufwachraum einer OP- Einheit. Wir untersuchten im Rahmen dieser Arbeit das Auftreten von Delirium bei Patienten, die sich in einem Krankenhaus der Grund- und Regelversorgung einer Operation in einer Kombination von Allgemein- und Regionalanästhesie unterzogen. Ebenso waren Patienten eingeschlossen, die sich einer Lokal- oder Regionalanästhesie ohne nachfolgender Allgemeinanästhesie unterzogen. Ein Delirium wurde mittels des etablierten NU-DESC-Tests ermittelt. Im Gegensatz zu publizierten Studien wurde im Aufwachraum eine niedrige Häufigkeit von Delirien festgestellt Auch bei einer Subgruppenanalyse von Patientengruppen erhöhtem Risiko (Alter ≥70 Jahre, große Gelenkeingriffe, Vorhandensein von bestimmten prädisponierenden oder präzipitierenden Faktoren) war die Prävalenz des postoperativen Delirs niedrig, was wahrscheinlich auf die eingeschlossene Stichprobe zurückzuführen ist.
Ipomoea obscura
Creators: name: Araújo, Diogo
name: Alves, Marccus
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Solanales
Convolvulaceae
Ipomoea
Ipomoea obscura

description: 24. Ipomoea obscura (L.) Ker Gawl.
Brazil (Pernambuco). Native from Tropical Africa, being the first register to Brazil’s northeast.
Selected Voucher:—Piedade, Alves-Araújo et al. 565 (UFP).
description: Published as part of Araújo, Diogo & Alves, Marccus, 2010, Climbing plants of a fragmented area of lowland Atlantic Forest, Igarassu, Pernambuco (northeastern Brazil), pp. 1-24 in Phytotaxa 8 on page 17, DOI: 10.11646/phytotaxa.8.1.1, http://zenodo.org/record/4893863
On the experimental calculation of the conversion
matrix for sub-harmonic mixer
Creators: name: Loglio, G.
name: Cidronali, A.
name: Accillaro, C.
name: Usai, M.
name: Magrini, I.
name: Camprini, M.
name: Collodi, G.
name: Manes, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: This paper introduces experimental observations
and theoretical considerations on a newly introduced technique allowing to measure the admittance conversion matrix of microwave device, by large-signal vectorial measurements. 
In particular, it discusses the capability and the limitation of the method to evaluate the conversion matrix of an anti-parallel Schottky diode-pair, starting from the measurement of the single diode.
A theoretical treatment and several simulated and
experimental results give an insight into the approach.
A measurement-based distributed large-signal E/O circuit model for high-speed electroabsorption modulators
Creators: name: Cappelluti, F.
name: Pirola, M.
name: Ghione, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: The paper presents a measurement-based largesignal
distributed model for high-speed electroabsorption modulators,
integrated within an RF circuit CAD environment.
The model is implemented through a cascaded-cell approach;
the identification of the nonlinear lumped equivalent circuit
parameters of each cell through measurements is discussed and an example is provided of circuit extraction. An example of
integrated driver-EAM simulation is finally discussed.
Ultrahigh drive current and large selectivity in GeS selector
Creators: name: Jia, Shujing
name: Li, Huanglong
name: Gotoh, Tamihiro
name: Longeaud, Christophe
name: Zhang, Bin
name: Lyu, Juan
name: Lv, Shilong
name: Zhu, Min
name: Song, Zhitang
name: Liu, Qi
name: Robertson, John
name: Liu, Ming
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Article
/639/301/1005/1007
/639/925/927
/119/118
/147/137
/147/143
/140/133
/140/146
/145
article

description: Funder: National Key Research and Development Program of China (2017YFB0206101); Strategic Priority Research Program of the Chinese Academy of Sciences (XDB44010200); Hundred Talents Program (Chinese Academy of Sciences); Shanghai Pujiang Talent Program (18PJ1411100)
description: Abstract: Selector devices are indispensable components of large-scale nonvolatile memory and neuromorphic array systems. Besides the conventional silicon transistor, two-terminal ovonic threshold switching device with much higher scalability is currently the most industrially favored selector technology. However, current ovonic threshold switching devices rely heavily on intricate control of material stoichiometry and generally suffer from toxic and complex dopants. Here, we report on a selector with a large drive current density of 34 MA cm−2 and a ~106 high nonlinearity, realized in an environment-friendly and earth-abundant sulfide binary semiconductor, GeS. Both experiments and first-principles calculations reveal Ge pyramid-dominated network and high density of near-valence band trap states in amorphous GeS. The high-drive current capacity is associated with the strong Ge-S covalency and the high nonlinearity could arise from the synergy of the mid-gap traps assisted electronic transition and local Ge-Ge chain growth as well as locally enhanced bond alignment under high electric field.
Parkinson's Disease Detection using Machine Learning
Creators: name: Omkar Singh, Santosh Singh, Anjali Rasal
Publisher: name: Zenodo
Year: 2025

description: Parkinson's disease (PD) is a progressive neurodegenerative disorder that affects millions globally,characterized by motor symptoms such as tremors, bradykinesia, and rigidity, as well as non-motorsymptoms. Early diagnosis of PD is challenging due to its symptom overlap with other disorders, oftenresulting in delayed intervention. Recent deep learning (DL) advances offer promising approaches forenhancing early detection accuracy, leveraging large-scale datasets and advanced neural networks. Thispaper explores the application of DL techniques, including Random Forest(RF) and support vectorRegression(SVR) to analyze clinical data, gait patterns, and medical imaging for PD diagnosis. Wefocus on supervised learning models trained on various multimodal data sources to improve diagnosticprecision and identify potential biomarkers for early PD detection. Experimental results demonstrate thecapability of DL models to achieve high classification accuracy, contributing to reliable and accessiblediagnostic tools. Future work includes integrating additional data sources, refining algorithms tominimize computational costs, and implementing explainable AI for clearer clinical interpretations. Ourfindings underscore the transformative potential of deep learning in advancing Parkinson's diseasediagnostics, supporting timely and personalized medical intervention. Current research aims to addressthe challenges posed by late-stage diagnosis and limited treatment options by focusing on biomarkerdiscovery, genetic and molecular analysis, drug development, and computational modeling. Biomarkerresearch seeks to identify indicators in blood, cerebrospinal fluid, and neuroimaging data that can enableearly PD diagnosis before severe symptoms emerge. Genetic and molecular studies are advancing theunderstanding of hereditary and biochemical pathways involved in PD, informing personalizedtreatment strategies. Drug development efforts are exploring neuroprotective therapies to preserve orrestore affected brain cells. Additionally, machine learning approaches are being utilized to analyzecomplex datasets, identify patterns in disease progression, and customize patient care. Environmentaland lifestyle studies also play a role in examining external factors that may influence PD risk. Together,these approaches hold promise for transforming PD from a progressively debilitating condition into amanageable or preventable one, ultimately improving patient outcomes and reducing the societal impactof the disease.
Dark Matter density and the Higgs mass in LVS String Phenomenology
Creators: name: de Alwis, Senarath
name: Givens, Kevin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Large Volume Scenario for getting a non-supersymmetric vacuum in type IIB string theory leads, through the Weyl anomaly and renormalization group running, to an interesting phenomenology. However, for gravitino masses below 500 TeV there are cosmological problems and the resulting Higgs mass is well below 124 GeV. Here we discuss the phenomenology and cosmology for gravitino masses which are $\gtrsim$ 500 TeV. We find that not only is the cosmological modulus problem alleviated and the right value for dark matter density obtained, but also the Higgs mass is in the 122-125 GeV range. However the spectrum of SUSY particles will be too heavy to be observed at the LHC.
description: 16 pages, 2 figures, further discussion of cosmological issues, references added, version to be published in PLB
Drumming my way home : an intergenerational narrative inquiry about Secwepemc identities
Creators: name: Martin, Georgina
Publisher: name: University of British Columbia
Year: 2014

description: The point of origin for my research is my birth: I was born in the Coqualeetza Indian Hospital. I was denied contact with my mother because she had tuberculosis and was deemed contagious. Indian Hospitals were established to house Indigenous peoples to control contamination. In my mind, I was born into legislated interference. My research puzzle emerges from my encounters with what I call a lost “sense of belonging”. Through exploration, I educated myself, my community, and the public about what happens to an Indigenous person when they are removed from critical aspects of their cultural identities. As part of the journey, I weave together two methodologies that support and protect the intense emotional work that accompanies my inquiry. These are Indigenous Storywork and Narrative Inquiry. Indigenous Storywork allows me to employ important protocols that align with community-based ethics while conducting research with Indigenous communities; Narrative Inquiry, particularly autobiographical Narrative Inquiry, allows me to engage safely and relationally in deep personal reflection. I examine what it means to be Secwepemc from my and my community’s perspective as I engage with the lived-experience stories of a Secwepemc youth and Elder. I tell of my own lived experiences and share my participants’ narratives; this story-sharing highlights the importance of knowing oneself and will assist other Indigenous peoples to define their own identities. I ascertain that Indigenous Knowledge is anchored in our identities and connections to our cultural rootedness, often inspired by the cultural teachings of grandparents. My autobiographical narrative, along with the participants’ stories, identifies the importance of intergenerational knowledge transmission, familial relationships, and land-based/culture-based learnings in my Secwepemc identity study. The Secwepemc hand drum theoretically and metaphorically epitomizes Indigenous Knowledge; it ensures that my research project remains balanced in terms of upholding community protocols while honouring the Elders’/grandparents’ teachings. Rather than allow the influx of external influences to hold Indigenous peoples in a subjugated position, I propose that narrative-based research increases our advancement in research, academia, and healing. This dissertation offers an alternative way to tell our truths and to remove Indigenous histories from the periphery of mainstream society.
Topological Quantum Phase Transition in Synthetic Non-Abelian Gauge Potential
Creators: name: Sun, Fadi
name: Yu, Xiao-Lu
name: Ye, Jinwu
name: Fan, Heng
name: Liu, Wu-Ming
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The method of synthetic gauge potentials opens up a new avenue for our understanding and discovering novel quantum states of matter. We investigate the topological quantum phase transition of Fermi gases trapped in a honeycomb lattice in the presence of a synthetic non- Abelian gauge potential. We develop a systematic fermionic effective field theory to describe a topological quantum phase transition tuned by the non-Abelian gauge potential and ex- plore its various important experimental consequences. Numerical calculations on lattice scales are performed to compare with the results achieved by the fermionic effective field theory. Several possible experimental detection methods of topological quantum phase tran- sition are proposed. In contrast to condensed matter experiments where only gauge invariant quantities can be measured, both gauge invariant and non-gauge invariant quantities can be measured by experimentally generating various non-Abelian gauges corresponding to the same set of Wilson loops.
Monolithic AlGaN/GaN HEMT SPDT switch
Creators: name: Kaper, Val
name: Thompson, Richard
name: Prunty, Tom
name: Shealy, James R.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: In this summary we present design and experimental
results of a monolithic L/S band SPDT switch based on
AlGaN/GaN HEMT’s. The switch was measured to have 0.87,
0.96, 1 dB insertion loss and 46, 42 and 41 dB isolation at
0.9, 1.8 and 2.1 GHz respectively. The switch also shows linear performance for the power levels up to 1 Watt in the insertion mode and more than 2 Watts in the isolation mode.
Index Terms—AlGaN/GaN HEMT, MMIC, switch.
Sobolev Metrics on Diffeomorphism Groups and the Derived Geometry of Spaces of Submanifolds
Creators: name: Micheli, Mario
name: Michor, Peter W.
name: Mumford, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58B20, 58D15, 37K65

description: Given a finite dimensional manifold $N$, the group $\operatorname{Diff}_{\mathcal S}(N)$ of diffeomorphism of $N$ which fall suitably rapidly to the identity, acts on the manifold $B(M,N)$ of submanifolds on $N$ of diffeomorphism type $M$ where $M$ is a compact manifold with $\dim M
description: 28 pages. In this version some misprints corrected
High fT 30nm In0.7GaAs HEMT’s Beyond Lithography
Limitations
Creators: name: Kim, Dae-Hyun
name: Noh, Hun-Hee
name: Yeon, Seong-Jin
name: Lee, Jae-Hak
name: Seo, Kwang-Seok
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: Two types of 30nm In0.7GaAs HEMT has been
successfully fabricated, using SiO2/SiNx sidewall process
and BCB planarization, and ZEP flowing and sloped
etching technique. The sidewall gate process was used to
obtain more fine line in one type of device, which
enabled to lessen the initial line length to half by this
process, and to fill the schottky gate effectively in a
narrow gate line, the sputtered tungsten (W) metal was
utilized instead of evaporation method. To reduce the
parasitic capacitance through dielectric layers and gate
metal resistance, the etch-backed BCB was used for the
assisting layer of gate top head. The other 30nm device
could be fabricated with inverted double-exposure &
double-develop method when initial defined 100nm
could be reduced to 30nm by using ZEP flowing and
sloped etching. The fabricated two 30nm In0.7GaAs
HEMT’s showed similar characteristics such as fT above
400GHz. We believe that the developed technology will
be directly applicable to an InGaAs nano-HEMT with
finer gate length if the initial line length will be reduced
below 60nm range.
High Efficiency and Linear Dual Chain Power Amplifier without/with Automatic Bias Current Control for CDMA Handset Applications
Creators: name: Kim, Hong-Teuk
name: Lee, Ki-Hong
name: Choi, Hyung-Kyu
name: Choi, Ji-Youn
name: Lee, Kyung-Hak
name: Kim, Jin-Pil
name: Ryu, Gi-Hyon
name: Jeon, Yong-Joon
name: Han, Choong-Soo
name: Kim, Keechul
name: Lee, Kyungho
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: New architectures of the dual chain InGaP
MMIC power amplifiers without/with automatic bias
current control (ABC2) have been developed for
improving efficiency in the low-power region while
maintaining the high linearity for all Pout regions. For
low standby current less than 25 mA, the amplifiers
initially operate using small HBT arrays. For small
chip size, high load impedance in low-power region,
and efficient power combining in high-power region,
phase-compensating L-C matching circuits using lowpass
and high-pass networks are used. A new simple
power detection and bias current control circuit is
employed to the power amplifier, resulting in
automatic gain control for Pout variation. The
fabricated ABC2 power amplifier module shows good
ACPR more -48 dBc over all Pouts, and high efficiency
of 6 % PAE (conventional 3.5~4%) at Pout=9 dBm,
and 37.5 % PAE at Pout=28 dBm.
Exploring gestural input for engineering surveys of real-life structures in virtual reality using photogrammetric 3D models
Creators: name: Tadeja, Sławomir Konrad
name: Lu, Yupu
name: Rydlewicz, Maciej
name: Rydlewicz, Wojciech
name: Bubas, Tomasz
name: Kristensson, Per Ola
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: 1173: Interaction in Immersive Experiences
Virtual reality
Photogrammetry
Industrial visual analytics
Immersive analytics
Digital twinning
Virtual reality content

description: Funder: Cambridge Commonwealth, European and International Trust; doi: https://doi.org/10.13039/501100003343
description: Funder: Tsinghua Academic Fund for Undergraduate Overseas Studies
description: Funder: Tsien Excellence in Engineering Program
description: Abstract: Photogrammetry is a promising set of methods for generating photorealistic 3D models of physical objects and structures. Such methods may rely solely on camera-captured photographs or include additional sensor data. Digital twins are digital replicas of physical objects and structures. Photogrammetry is an opportune approach for generating 3D models for the purpose of preparing digital twins. At a sufficiently high level of quality, digital twins provide effective archival representations of physical objects and structures and become effective substitutes for engineering inspections and surveying. While photogrammetric techniques are well-established, insights about effective methods for interacting with such models in virtual reality remain underexplored. We report the results of a qualitative engineering case study in which we asked six domain experts to carry out engineering measurement tasks in an immersive environment using bimanual gestural input coupled with gaze-tracking. The qualitative case study revealed that gaze-supported bimanual interaction of photogrammetric 3D models is a promising modality for domain experts. It allows the experts to efficiently manipulate and measure elements of the 3D model. To better allow designers to support this modality, we report design implications distilled from the feedback from the domain experts.
Analytical transport model of AlGaN/GaN HEMT
based on electrical and thermal measurement
Creators: name: Jacquet, J-C
name: Aubry, R.
name: Gérard, H.
name: Delos, E.
name: Rolland, N.
name: Cordier, Y.
name: Bussutil, A.
name: Rousseau, M.
name: Delage, S. L.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: ABSTRACT — GaN and its related alloys
constitute a family of wide bandgap semiconductors suitable
to optoelectronics and power microwave applications. For
the latter applications, their high breakdown fields in the
3MV/cm range and their high peak electron velocity above
107cm/s are crucial. The high electron mobility transistor
(HEMT) based on GaN is suitable to high frequencies and
power applications. Moreover, those materials show
excellent chemical and metallurgical stability. One
peculiarity of GaN is stemming from the fact that the crystal
growth is mostly achieved by heteroepitaxy since no
commercial GaN substrates are yet available. The
substrates currently chosen are sapphire, silicon carbide
and silicon. The high power RF device performance
decreases as operation temperature increases (e.g. fall of
electron mobility impacting the cut-off frequencies and
degradation of device reliability) so it is very important to
understand the thermal effect in the device. This work
present an analytical model of electron transport based on,
at one hand, experimental characterisation such as I-V
pulsed measurement, thermal characterisation and, at the
other hand, thermal simulation and physical analysis. We
were able to derive the variation of the electron velocity
model as a function of temperature thanks to the thermal
characterisation of parameters such electron mobility,
ohmic contact, carrier density and gate Schottky barrier.
Evolution and dispersal of snakes across the Cretaceous-Paleogene mass extinction
Creators: name: Klein, Catherine G.
name: Pisani, Davide
name: Field, Daniel J.
name: Lakin, Rebecca
name: Wills, Matthew A.
name: Longrich, Nicholas R.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/631/181/414
/631/181/757
article

description: Abstract: Mass extinctions have repeatedly shaped global biodiversity. The Cretaceous-Paleogene (K-Pg) mass extinction caused the demise of numerous vertebrate groups, and its aftermath saw the rapid diversification of surviving mammals, birds, frogs, and teleost fishes. However, the effects of the K-Pg extinction on the evolution of snakes—a major clade of predators comprising over 3,700 living species—remains poorly understood. Here, we combine an extensive molecular dataset with phylogenetically and stratigraphically constrained fossil calibrations to infer an evolutionary timescale for Serpentes. We reveal a potential diversification among crown snakes associated with the K-Pg mass extinction, led by the successful colonisation of Asia by the major extant clade Afrophidia. Vertebral morphometrics suggest increasing morphological specialisation among marine snakes through the Paleogene. The dispersal patterns of snakes following the K-Pg underscore the importance of this mass extinction event in shaping Earth’s extant vertebrate faunas.
Migration, Agency, and the Sex Industry: Practitioners’ Perspectives on Foreign Sex Workers in Turkey
Creators: name: Kaya, Omur
name: Erez, Edna
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: subject: Law
subject: FOS: Law

description: The article presents the political, economic, and sociocultural factors that make Turkey an attractive destination for foreign sex workers, and reviews trends in official statistics of arrested traffickers, rescued victims, and deportation of migrant illegal sex workers. In-depth interviews of 20 law enforcement and nongovernmental organizations staff members, who in the course of their work come into close contact with foreign sex workers, shed light on the statistics. The interview data provide insights into the structure of the Turkish sex market, the factors that bring foreign women to work in this market, and the impact of legal reforms on the circumstances of foreign sex workers. The article concludes with the implications of the findings for public policy.
A mathematical model of tumor self-seeding reveals secondary metastatic deposits as drivers of primary tumor growth
Creators: name: Scott, Jacob G
name: Basanta, David
name: Anderson, Alexander R. A.
name: Gerlee, Philip
Publisher: name: arXiv
Year: 2012
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Two models of circulating tumor cell (CTC) dynamics have been proposed to explain the phenomenon of tumor 'self-seeding', whereby CTCs repopulate the primary tumor and accelerate growth: Primary Seeding, where cells from a primary tumor shed into the vasculature and return back to the primary themselves; and Secondary Seeding, where cells from the primary first metastasize in a secondary tissue and form microscopic secondary deposits, which then shed cells into the vasculature returning to the primary. These two models are difficult to distinguish experimentally, yet the differences between them is of great importance to both our understanding of the metastatic process and also for designing methods of intervention. Therefore we developed a mathematical model to test the relative likelihood of these two phenomena in the subset of tumours whose shed CTCs first encounter the lung capillary bed, and show that Secondary Seeding is several orders of magnitude more likely than Primary seeding. We suggest how this difference could affect tumour evolution, progression and therapy, and propose several possible methods of experimental validation.
description: 20 pages, 4 figures
Robust GaN HEMT Low-Noise Amplifier MMICs
for X-Band Applications
Creators: name: Krausse, D.
name: Quay, R.
name: Tessmann, A.
name: Massler, H.
name: Leuther, A.
name: Merkle, T.
name: M Uller, S.
name: Schw Orer, C.
name: Mikulla, M.
name: Schlechtweg, M.
name: Weimann, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: This work presents MMIC low-noise amplifiers
based on AlGaN/GaN HEMT technology on SiC substrate for
robust receiver applications at X-band between 8 GHz and
11 GHz. Three versions of one-stage and two versions of two-stage amplifiers are presented with a noise figure of 1.81 dB at 10 GHz and 18 dB of small-signal gain for the two-stage device fully integrated in coplanar passive technology. The paper describes modeling and circuit design, bias dependence of the small-signal and noise circuit parameters of the MMICs realized, and highpower and intermodulation behavior.
Requirements of a large-signal HEMT model with regard to non-linear MMIC design
Creators: name: Schreurs, D.
name: Nauwelaers, B.
name: De Raedt, W.
name: Van Rossum, M.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: ING-INF/01 Elettronica

description: The most important requirement on large-signal HEMT models, for use in non-linear MMIC design, is a high accuracy of the Ids curve and this at least up to the third order derivative near pinch-off. The existing large-signal HEMT models can't model this accurately. Therefore, we will propose a modified Angelov model.
Effect of wax on hydrate formation in water-in-oil emulsions
Creators: name: Wang, Wei
name: Huang, Qiyu
name: Zheng, Haimin
name: Wang, Qiuchen
name: Zhang, Dongxu
name: Cheng, Xianwen
name: Li, Rongbin
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Computational Biology

description: Gas hydrates are non-stoichiometric crystalline compounds that can block pipelines, representing a significant threat to subsea flow assurance. In addition, wax precipitation is also a common issue in subsea pipelines. Since the multiphase flow is transported under low temperature and high-pressure conditions, formation of gas hydrates and wax precipitation may occur simultaneously, potentially posing greater challenges to subsea pipelines. The presence of wax complicates the hydrate formation issue. In this work, the influence of wax on hydrate formation was experimentally investigated in a high-pressure autoclave equipped with an online viscometer. Since natural surfactants are common in crude oil, Span 80 was used to simulate the presence of natural surfactants, and the effect of this compound on hydrate formation was considered. The presence of wax or Span 80 was observed to increase the difficulty of the hydrate formation at similar temperatures. The wax shell structure was found to grow at the water/oil interface based on the microscopic observation. Wax was also found to increase the hydrate induction time significantly. By associating the microscopic observation, a possible mechanism based on the mass transfer resistance was proposed to clarify the influence of wax on hydrate nucleation. Moreover, in the absence of Span 80, the amount of hydrate formed was observed to increase with the amount of wax in the emulsions.
A new SPICE-type heterojunction bipolar transistor large-signal model
Creators: name: Lu, Ke
name: Perry, Philip
name: Brazil, Thomas J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: ING-INF/01 Elettronica

description: A new SPICE-type, HBT large-signal model is described with special emphasis on the associated parameter extraction techniques. The model can be used to simulate HBT's under DC, microwave small-signal and large-signal conditions. Also, allowance is made for self-heating effects, which are quite pronounced in HBT's. Excellent agreement between measured and simulated results demonstrate the utility of the proposed model in large-signal design.
Ipomoea quamoclit Linnaeus 1753
Creators: name: Araújo, Diogo
name: Alves, Marccus
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Solanales
Convolvulaceae
Ipomoea
Ipomoea quamoclit

description: 25. Ipomoea quamoclit L.
Tropical America (widely distributed) (Simão-Biachini 1993).
Selected Vouchers:—Macacos, Alves-Araújo et al. 531 (IPA, UFP).
description: Published as part of Araújo, Diogo & Alves, Marccus, 2010, Climbing plants of a fragmented area of lowland Atlantic Forest, Igarassu, Pernambuco (northeastern Brazil), pp. 1-24 in Phytotaxa 8 on page 17, DOI: 10.11646/phytotaxa.8.1.1, http://zenodo.org/record/4893863
Thermal modelling of microwave devices for the electrothermal analysis of nonlinear microwave circuits
Creators: name: Rizzoli, Vittorio
name: Costanzo, Alessandra
name: Lipparini, Alessandro
name: Mastri, Franco
name: Muzzarelli, Giulio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: ING-INF/01 Elettronica

description: The paper discusses a general approach to the electrothermal simulation of nonlinear FET circuits. The thermal resistance of each active device is first computed by a numerical method based on physical and layout information, and is then used to derive a temperature-dependent nonlinear model starting from measured DC and small-signal information. The combined thermal and electrical simulation is then carried out by an extended harmonic-balance technique.
Jacquemontia menispermoides Choisy 1838
Creators: name: Araújo, Diogo
name: Alves, Marccus
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Solanales
Convolvulaceae
Jacquemontia
Jacquemontia menispermoides

description: 26. Jacquemontia menispermoides Choisy
Brazil (Pernambuco). Atlantic forest and Caatinga.
Selected Voucher:—Zambana, Alves-Araújo et al. 643 (UFP); Piedade, Albuquerque 356 (IPA, ULM).
description: Published as part of Araújo, Diogo & Alves, Marccus, 2010, Climbing plants of a fragmented area of lowland Atlantic Forest, Igarassu, Pernambuco (northeastern Brazil), pp. 1-24 in Phytotaxa 8 on page 17, DOI: 10.11646/phytotaxa.8.1.1, http://zenodo.org/record/4893863
Non-Levi closed conjugacy classes of SP_q(2n)
Creators: name: Mudrov, Andrey
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 81R50, 81R60, 17B37

description: We construct explicit quantization of closed conjugacy classes of the complex symplectic group SP(2n) with non-Levi isotropy subgroups through an operator realization on highest weight modules over the quantum group U_q(sp(2n)).
description: Replaced with the journal version. 38 pages
Nature of Bose gases near Feshbach resonance : the interplay between few-body and many-body physics
Creators: name: Mashayekhi, Mohammad S.
Publisher: name: University of British Columbia
Year: 2014

description: In this thesis, we investigated the physics of two- and three-dimensional ultra cold Bose gases in the strongly interacting regime at zero temperature. This regime can be experimentally accessed using a Feshbach resonance. We applied a self-consistent diagrammatic approach to determine the chemical potential of three-dimensional Bose gases for a wide range of interaction values. We showed that such strongly interacting Bose gases become unstable towards the formation of molecules at a finite positive scattering length. In fact, the interaction between atoms becomes effectively attractive and the system looses its metastability before reaching the unitary limit. We also found that such systems are nearly fermionized close to the instability point. Near this critical point, the chemical potential reaches a maximum and the contribution to the system energy due to three-body forces is estimated to be only a few percent. We also studied the same system using a self-consistent renormalization group method. This approach confirms the existence of an instability point towards the formation of molecules as well as fermionization. We showed that the instability and accompanying maximum are precursors of the sign change of the effective two-body interaction strength from repulsive to attractive near resonance. In addition, we examined the physics of two-dimensional Bose gases near resonance using a similar self-consistent diagrammatic approach as the one introduced for three-dimensional Bose gases. We demonstrated that a competition between three-body attractive interactions and two-body repulsive forces results in the chemical potential of two-dimensional Bose gases to exhibit a maximum at a critical scattering length beyond which these quantum gases possess a negative compressibility. For larger scattering lengths, the increasingly prominent role played by three-body attractive interactions leads to an onset instability at a second critical value. The three-body effects studied for these systems are universal, fully characterized by the effective two-dimensional scattering length and are, in comparison to the three-dimensional case, independent of three-body ultraviolet physics.
ОЦЕНКА РЕЗУЛЬТАТИВНОСТИ МАРКЕТИНГОВОЙ ДЕЯТЕЛЬНОСТИ УНИВЕРСИТЕТА
Creators: name: Тураева, Динара
Publisher: name: Zenodo
Year: 2023

description: В статье изложены результаты оценки результативности маркетинговой деятельности университета. По мнению автора, оценка результативности маркетинговой деятельности образовательной организации является важной составляющей успешного управления и развития учебного заведения. Данная оценка позволяет определить эффективность маркетинговых стратегий и действий, а также выявить потенциальные области для улучшения и оптимизации маркетинговых усилий.
Why are quadratic normal volatility models analytically tractable?
Creators: name: Carr, Peter
name: Fisher, Travis
name: Ruf, Johannes
Publisher: name: arXiv
Year: 2012
Subjects: subject: Pricing of Securities (q-fin.PR)
subject: Probability (math.PR)
subject: Computational Finance (q-fin.CP)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: We discuss the class of "Quadratic Normal Volatility" models, which have drawn much attention in the financial industry due to their analytic tractability and flexibility. We characterize these models as the ones that can be obtained from stopped Brownian motion by a simple transformation and a change of measure that only depends on the terminal value of the stopped Brownian motion. This explains the existence of explicit analytic formulas for option prices within Quadratic Normal Volatility models in the academic literature.
Influence of modulation of the actin cytoskeleton on NF-κB activation and interleukin-6 signaling
Creators: name: Georgieva, Elizabeta
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2021
Subjects: subject: Cytologie
subject: Signaltransduktion
subject: 571.6

description: Transcription factor NF-κB and its target gene IL6 are involved in many key processes like immune defense, inflammatory, cell proliferation and apoptosis. At the same time actin cytoskeleton plays a crucial role not only in the cell motility, but also in the proliferation and cell survival, as well as in the intracellular signal transduction. In the current work we have investigated the influence of actin cytoskeleton reorganization on the signaling pathways of NF-κB and cytokine interleukin 6 (IL-6) as well as on the proteolytic production of soluble IL-6 receptors (sIL-6R). Manipulation of the actin cytoskeleton was achieved with the help of actin-modulating substances like jasplakinolide and cytochalasins B and D. Our results showed that actin-modulating compounds do not have an effect on the phosphorylation state of NF-κB subunits p65 and RelB in the cell lines Hep3B and HCT116. Hence, perturbation of actin cytoskeleton does not lead to activation of canonical and noncanonical pathways of NF-κB. By contrast, manipulation of actin cytoskeleton with cytochalasins and jasplakinolide led to reduction in the activation of STAT3 after stimulation with IL-6 in Hep3B cells. Furthermore, production of sIL-6R by metalloprotease ADAM10 as well as synthesis of IL-6 itself was investigated. Neither the IL-6R proteolysis nor the IL-6 synthesis was affected from the used substances. In conclusion, modulation of actin cytoskeleton shows a minimal influence on the investigated processes.
Scale invariance of entanglement dynamics in Grover's quantum search algorithm
Creators: name: Rossi, M.
name: Bruß, D.
name: Macchiavello, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We calculate the amount of entanglement of the multiqubit quantum states employed in the Grover algorithm, by following its dynamics at each step of the computation. We show that genuine multipartite entanglement is always present. Remarkably, the dynamics of any type of entanglement as well as of genuine multipartite entanglement is independent of the number n of qubits for large n, thus exhibiting a scale invariance property. We compare this result with the entanglement dynamics induced by a fixed-point quantum search algorithm. We also investigate criteria for efficient simulatability in the context of Grover's algorithm.
description: 5 pages, 4 figures, significantly improved version
Hot-carrier-induced   radiation   emission   in   AlGaAs/GaAs   high electron mobility  transistors  and GaAs MESFETs
Creators: name: Zanoni, Enrico
name: Bigliardi, Stefano
name: Capelletti, Rosanna
name: Lugli, Paolo
name: Magistrali, Fabrizio
name: Manfredi, Manfredo
name: Paccagnella, Alessandro
name: Testa, Nicoletta
name: Canali, C.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1990
Subjects: ING-INF/01 Elettronica

description: New results are presented concerning the spectral distribution in the 1.7 - 2.9 eV range of the electromagnetic radiation emitted by 0.5 mm GaAs MESFETs and 0.3 mm AlGaAs/GaAs HEMTs biased at high drain voltages (> 4.0 V). The energy distribution of the emitted light intensity cannot be described by assuming a maxwellian electron energy distribution function. The detection of emitted radiation is markedly correlated with the presence of non-negligible gate and substrate hole currents, which are not due to breakdown of the gate-drain Schottky junction, but are due to collection of holes generated    by    impact   ionization.
Advanced  circuit concepts  and  evolving  MMIC processes
Creators: name: Myers, F.A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: ING-INF/01 Elettronica

description: This paper discusses the evolution of a typical GaAs MMIC process from its inception to its latest format. Emphasis is placed upon the realisation of circuit design principles driven by the needs of cost and manufacturability not just performance although this, of course, cannot usually be sacrificed.
Tropical Severi Varieties
Creators: name: Yang, Jihyeon Jessie
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We study the tropicalizations of Severi varieties, which we call tropical Severi varieties. In this paper, we give a partial answer to the following question, ``describe the tropical Severi varieties explicitly.'' We obtain a description of tropical Severi varieties in terms of regular subdivisions of polygons. As an intermediate step, we construct explicit parameter spaces of curves. These parameter spaces are much simpler objects than the corresponding Severi variety and they are closely related to flat degenerations of the Severi variety, which in turn describes the tropical Severi variety. As an application, we understand G.Mikhalkin's correspondence theorem for the degrees of Severi varieties in terms of tropical intersection theory. In particular, this provides a proof of the independence of point-configurations in the enumeration of tropical nodal curves.
description: 25 pages, Final version accepted to Portugal. Math
The Projection Calculus
Creators: name: Bice, Tristan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 47A60

description: We develop some tools for manipulating and constructing projections in C*-algebras. These are then applied to give short proofs of some standard projection homotopy results, as well as strengthen some fundamental classical results for C*-algebras of real rank zero, specifically on liftings, excising pure states and Kadison's transitivity theorem. Lastly, we investigate some order properties of the set of projections in C*-algebras of real rank zero, building on our previous work.
GaAs devices for new mobile communication systems application
Creators: name: Pettenpaul, E.
name: Schopf, K.J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: ING-INF/01 Elettronica

description: A set of GaAs SMD devices has been developed for use in the new european mobile communication equipment, i.e. for DECT and PCN at 1900 and 1800 MHz, respectively. These devices cover the rf part of mobile communication terminals. The devices considered are a GaAs LNC chip for the receiver part, an upconversion mixer MMIC, a prescaler and GaAs power MESFETs as end-stages for the transmitter. The complete DECT, PCN block circuit including GaAs and Si devices will be described.