cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Overview of non-linear device modelling methods based on vectorial large-signal measurements
Creators: name: Schreurs, Dominique
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: Classical large-signal device models are indirectly derived from small-signal S-parameter measurements. The recent availability of full two-port vectorial large-signal measurement systems has initiated the development of new techniques to enhance the ease and accuracy of non-linear transistor modelling. In this paper, we focus to two equivalent circuit based, or "grey" box, transistor modelling methods that are based on vectorial large-signal measurements. We show that the technique of parameter optimisation is interesting to generate fast and accurate non­linear models for particular applications. The direct extraction method is preferable to determine general non-linear models, but its efficiency is strongly related to the available measurement hardware.
title: Making Sense of the War (Spain)
title: Making Sense of the War (Spain)
Creators: name: García Sanz, Carolina
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Spanien
subject: Weltkrieg [1914-1918]
subject: Öffentliche Meinung
subject: World War, 1914-1918--Spain
subject: Public opinion

description: This article deals with Spanish representations of neutrality and war within domestic ideological space. Spaniards suffered acutely from the pressures of economic and maritime war. The need to make sense of themselves, by reflecting on the role of their home nation in a world war, would form diverging political and social visions of Spain as nation. From this point of view, Spanish neutrality should receive more careful attention as a foreign policy intertwined with social and cultural stances within a strongly polarized inner context.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Recent advances in the measurement and black-box modelling of high-frequency components
Creators: name: Verspecht, Jan
name: Schreurs, Dominique
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: This paper gives an overview of recently developed frequency domain measurement and modelling techniques for non-linear microwave components. The system architecture and measurement capabilities of the Hewlett-Packard "Non-linear Network Measurement System" are described. Three modelling techniques, based on the new instrument measurement data, are discussed: empirical models, state-space models and black-box frequency domain models.
Elga Mark-Kuriku välipäevik nr 27
Creators: name: Mark-Kurik, Elga
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1978
Subjects: Severnaya Zemlya
Devonian
outcrops

description: Field notebook with descriptions of Devonian outcrops in Severnaya Zemlya.
Elga Mark-Kuriku välipäevik nr 28
Creators: name: Mark-Kurik, Elga
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1978
Subjects: Severnaya Zemlya
Devonian
outcrops

description: Field notebook with descriptions of Devonian outcrops in Severnaya Zemlya archipelago.
Urban atmospheric mercury contamination from artisanal mining : mapping, modeling, and mitigation
Creators: name: Cordy, Paul David
Publisher: name: University of British Columbia
Year: 2014

description: Artisanal miners in more than 70 countries extract gold using mercury, which is often evaporated in densely populated urban areas. This work explores the behaviour of these emissions, and the potential implications for human health. Maps of urban mercury concentrations are used to evaluate the impact of mercury reduction interventions and estimate the distribution of health hazard. Atmospheric dispersion modeling is also used to corroborate inferences about the behaviour of urban mercury vapour that are derived from observations, and to simulate hazard distributions. Miners decompose the amalgams (with 50 to 60% mercury) and melt the raw gold in shops located near the centre of each town without sufficient condensers or filters. The average concentrations measured by mobile mercury vapour analyzer transects taken repeatedly over several weeks were 1.25 μgm -³ in 2010 in Segovia and 0.331 μgm -³ in Andacollo (2009). Mobile mercury measurements and atmospheric dispersion modeling both indicate that mercury emissions from gold shops, though high, dissipate rapidly in space and time. Mobile mercury mapping along streets can detect most frequent emitters with only a few weeks of mobile sampling. Observations of concentrations greater than 1 μgm -³ indicate that within the past 5 minutes amalgam was being burned within a 200 metre radius. Measurements from towers show the temporal variability of mercury concentrations, and show that large quantities of mercury are available for long-range atmospheric transport. By World Health Organization (WHO) standards, these towns are exposed to a significant health hazard, and globally, the millions of miners as well as non-miners who live in similar towns are at serious risk of neurological and renal disease. Various direct and indirect indicators of gold production and mercury reduction also show that mitigation efforts by the United Nations Industrial Organization (UNIDO) in Colombia have reduced urban airborne mercury concentrations by approximately 50% in Segovia, Antioquia, despite a 30% increase in gold production during that three year period. This is attributable to the adoption of retorts by miners and regulations banning new processing centres to the rural periphery.
On the modelling and consequence of small-scale magnetic phenomena in the
      Saturnian system
Creators: name: Martin, Carley
Publisher: name: Lancaster University
Year: 2019

description: This thesis presents an analysis of Cassini magnetometer data in two
      different regions of the Kronian system. An evaluation of aperiodic waves
      on the equatorial current sheet is presented; the waves are fitted to a
      model of a Harris current sheet deformed by a Gaussian wave pulse. This
      analysis allows examination of the parameters relating to the waves, where
      amplitude of waves is found to increase with radial distance. In addition,
      the direction of propagation of the waves is found by resolving the wave
      numbers in 2-dimensions, where a general outwards propagation is found.

      The use of the Harris current sheet also allows the resolution of current
      sheet parameters, and it is found that the scale height of the current
      sheet increases with radial distance. Additionally, values of the magnetic
      field in the lobes are found using the model, which are then used along
      with the scale heights to estimate the current density in the azimuthal
      and radial directions. These values can also be used to calculate, using
      the divergence of current, the field aligned currents entering and leaving
      the ionosphere where a current entering the ionosphere pre-noon and a
      current exiting the ionosphere post-midnight are shown. This current
      density is then converted to an electron flux in the upward current
      region, and could produce an additional 1-11 kR of auroral emission which
      is seen in other infrared and ultraviolet data sets.

      Additionally, irregular magnetic signatures, such as the aperiodic waves,
      are found in the entire system including Titan’s ionosphere. At Titan, a
      statistical study of the position of flux ropes finds no spatial
      dependence other than an increased number of flux ropes in the sun-lit
      regions and ram-side regions. A comparison of force-free and nonforce free
      models is utilised to extract the radii and axial magnetic field of the
      flux ropes, and compare the assumptions required for both models.
      Additionally, deformations to the models are used to model common
      asymmetries seen in the magnetometer data and find that bending a
      force-free flux rope solves the problem of the direction ambiguity of
      using minimum variance analysis and using elliptical cross-sections of
      flux ropes allows for a asymmetric flux rope signature.

      All together, this thesis explores the varied magnetic phenomena in the
      Kronian system and uses them to understand the surrounding environment.
Noema fondato 2: schemi cinestetici e architettura categoriale della semantica
Creators: name: Peruzzi, Alberto
Publisher: name: Quaderni di Linguistica e Studi Orientali
Year: 2021

description: The paper describes the path of my research towards a kinaesthetic theory of meaning within which some of the main issues in 20th century’s semantics and philosophy of language are approached from the perspective of a naturalized phenomenology centered on spatiality. The core issue lies in the grounding of cognitive structure, as expressed in supposedly “atomic” sentences, and the solution proposed rests on the existence of a finite set of basic schemata of objects-and-actions which, suitably combined, allow for the constitution of any possible act of reference. The steps which led to the kinaesthetic theory are presented here in retrospect, from the roots in Husserl’s phenomenology to the essential debt toward cognitive grammar, particularly for what concerns the theory of metaphor. The emphasis is on one characteristic feature of the resulting approach, namely, the tools provided by category theory are argued to be indispensable in order to set up a model of the way human cognition and particularly logical architecture are grounded on basic schemata
description: Quaderni di Linguistica e Studi Orientali, Vol. 7 (2021)
Conformal Fractals for Normal Subgroups of Free Groups
Creators: name: Jaerisch, Johannes
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 37C45, 30F40 (Primary) 37C85, 43A07 (Secondary)

description: We investigate subsets of a multifractal decomposition of the limit set of a conformal graph directed Markov system, which is constructed from the Cayley graph of a free group with at least two generators. The subsets we consider are parametrised by a normal subgroup $N$ of the free group and mimic the radial limit set of a Kleinian group. Our main results show that, regarding the Hausdorff dimension of these sets, various results for Kleinian groups can be generalised. Namely, under certain natural symmetry assumptions on the multifractal decomposition, we prove that, for a subset parametrised by $N$, the Hausdorff dimension is maximal if and only if $\F_{d}/N$ is amenable and that the dimension is greater than half of the maximal value. We also give a criterion for amenability via the divergence of the Poincaré series of $N$. Our results are applied to the Lyapunov spectrum for normal subgroups of Kleinian groups of Schottky type.
description: Comments welcome
Spin-phonon coupling in multiferroic RCrO$_3$ (R-Y, Lu, Gd, Eu, Sm): A Raman study
Creators: name: Bhadram, Venkata Srinu
name: Rajeswaran, B.
name: Sundaresan, A.
name: Narayana, Chandrabhas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Raman study on a select few orthochromites, RCrO$_3$ (R = Y, Lu, Gd, Eu and Sm) shows that the phonon behavior at TN in compounds with magnetic R-ion (Gd and Sm) is remarkably different from that of non-magnetic R-ion (Y, Lu and Eu). While anomalies in most of the observed phonon frequencies in all these compounds may result from the distortion of CrO$_6$ octahedra due to size effect and magnetostriction arising from Cr-ordering, the anomalous behavior of their linewidths observed at TN for the compounds with only magnetic R-ion suggests spin-phonon coupling. The presence of spin-phonon coupling and the anomalies in the low frequency modes related to R-ion motion in orthochromites (R = Gd and Sm) support the suggestion that the coupling between 4f-3d moments play important role in inducing switchable electric polarization.
description: 6 pages (two column format), 7 figures; The updated version of the manuscript can be found at Euro. Phys. Lett. 101, 17008 (2013)
title: Portugal
title: Portugal
Creators: name: Rollo, Maria Fernanda
name: Pires, Ana Paula
name: Meneses, Filipe Ribeiro De
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Portugal
subject: Weltkrieg [1914-1918]
subject: World War, 1914-1918--Portugal

description: Portugal’s participation in the First World War was depicted by its supporters as a vital component of the consolidation of the country’s young republican regime (established in 1910) and its affirmation abroad. However, there was never any consensus on intervention and the despatch of an expeditionary force on the Western Front, and a ''coup d’état'' in December 1917 led to a revision of Portugal’s commitment to the conflict. The defence of the country’s substantial colonial empire generated greater agreement at the level of national elites, but the war in the colonies – especially in Mozambique – proved especially problematic for the Portuguese. All of these factors, taken together with domestic upheaval and a disappointing peace treaty in 1919, suggest that rather than strengthening the Republic, the First World War served to undermine it fatally, leaving it unprepared for the challenges of the post-war world.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Surjectivity of the total Clifford invariant and Brauer dimension
Creators: name: Auel, Asher
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11E81, 11E88, 14F22, 14H25, 14J20, 19G12, 20G35

description: Merkurjev's theorem--the statement that the 2-torsion of the Brauer group is represented by Clifford algebras of quadratic forms--is in general false when the base is no longer a field. The work of Parimala, Scharlau, and Sridharan proves the existence of smooth complete curves over local fields, over which Merkurjev's theorem is equivalent to the existence of a rational theta characteristic. Here, we prove that for smooth curves over a local field or surfaces over a finite field, replacing the Witt group by the total Witt group of all line bundle-valued quadratic forms recovers Merkurjev's theorem: the 2-torsion of the Brauer group is always represented by even Clifford algebras of line bundle-valued quadratic forms.
description: Final published version
Numerisch gestützte Entwicklung eines einseitigen Widerstandslötprozesses an Blech-Rohrverbindungen
Creators: name: Najuch, Marcel
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: Fügetechnik
subject: Stoffleichtbau
subject: Formleichtbau
subject: Gewichtsoptimierten Bauteilentwicklung
subject: Widerstandslöten
subject: 671.56

description: In addition to material lightweight design, form lightweight design is an important strategy for weight-optimized component development. If we consider for example the light weighting efforts in car body construction, hollow sections made of high-strength steel are also used in addition to the use of aluminum parts in order to op-timize component design in terms of strength, weight and installation space. To join these hollow sections to sheet-metal parts single-sided resistance welding was de-veloped. However, if the state of the art is considered, the deficits of the process become clear. The thermal and mechanical stress on the component as a result of the joining process leads, among other things, to unwanted component deformations and splashes. Due to the lack of a counter electrode, the component stiffness and thus the wall thickness further limits the process. Premature component failure under cy-clic loading can also be deduced as a disadvantage. In order to counteract the known deficits, an alternative process based on resistance brazing was developed in the un-derlying work. In addition to the experimental and numerical analysis of the joining and heating process and the determination of quality and design criteria, the process advantage in the thin-walled area will be presented as well. A practical example com-pletes the investigations.
description: Neben dem Stoffleichtbau ist der Formleichtbau ein wichtiger Ansatz zur gewichts-optimierten Bauteilentwicklung. Betrachtet man beispielsweise die Leichtbaubestre-bungen im Karosseriebau, so werden neben dem Einsatz von Aluminiumteilen ebenso Hohlprofile aus hochfestem Stahl genutzt, um eine kraft-, gewicht- und bauraumop-timierte Bauteilgestaltung zu ermöglichen. Um die Profile mit blechartigen Teilen zu verbinden, wurde das einseitige Widerstandsschweißen entwickelt. Betrachtet man je-doch den Stand der Technik, so werden die Defizite des Verfahrens deutlich. Durch die thermische und mechanische Bauteilbelastung in Folge des Fügeprozesses kommt es u.a. zu ungewollten Bauteildeformationen und Spritzern. Ein vorzeitiges Bauteil-versagen unter zyklischer Belastung kann ebenso als Nachteil abgeleitet werden. Auf-grund der fehlenden Gegenelektrode begrenzt weiter die Bauteilsteifigkeit und somit die Wandstärke den Prozess. Um den bekannten Defiziten entgegenzuwirken, wurde in der zugrundeliegenden Arbeit ein alternativer Verfahrensansatz auf Basis des Wi-derstandslötens entwickelt. Neben der experimentellen und numerischen Analyse des Verbindungs- und Erwärmungsprozesses sowie der Ableitung von Qualitäts- und Auslegungskriterien wird ebenso der Prozessvorteil im dünnwandigen Bereich darge-stellt. Ein praktisches Anwendungsbeispiel rundet die Untersuchungen ab.
Dimension, entropy, and the local distribution of measures
Creators: name: Sahlsten, Tuomas
name: Shmerkin, Pablo
name: Suomala, Ville
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 28A80, 28D20

description: We present a general approach to the study of the local distribution of measures on Euclidean spaces, based on local entropy averages. As concrete applications, we unify, generalize, and simplify a number of recent results on local homogeneity, porosity and conical densities of measures.
description: v2: 23 pages, 6 figures. Updated references. Accepted to J. London Math. Soc
title: War Aims and War Aims Discussions (Germany)
title: War Aims and War Aims Discussions (Germany)
Creators: name: Löffelbein, Nils
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Deutschland
subject: Weltkrieg [1914-1918]
subject: Kriegsziel
subject: Diplomatie

description: On 1 August 1914, the government of the German ''Reich'' declared war on Russia. Directly afterwards, an intense debate over its war aims flared up. This article traces the development of the war aims discussion: The nationalist War Aims Movement (''Kriegszielbewegung'') and the Supreme Military Command (''Oberste Heeresleitung'', OHL) pursued ever-more excessive war aims, which eventually led to the revocation of the prevailing truce (''Burgfrieden'') with the Social Democrats (SPD) and to the latter's eventual split in 1917. Russia’s October Revolution represented the apex of the annexationist war aims, which was, however, followed shortly by the German defeat.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
"Wh"-phrases and "wh"-in-situ in Late Archaic Chinese
Creators: name: Wang, Aiqing
Publisher: name: Quaderni di Linguistica e Studi Orientali
Year: 2021

description: In this paper I explore wh-phrases and wh-in-situ in Late Archaic Chinese (LAC). Simplex and complex wh-phrases in LAC can be divided into eleven semantic categories. Since LAC is a wh-fronting language, wh-items undergo obligatory preposing, unless being subjects. Nonetheless, there are exceptions to the raising of non-subject wh-phrases, namely, obligatory and optional wh-in-situ. When wh-DPs function as the second complement of ditransitive verbs nai/ruo/ru ‘to treat’, or the second complement of the ditransitive verb wei ‘to call’, they must stay in their postverbal base position. In terms of optional wh-in-situ, there are two situations, i.e. wh-predicates and wh-complement of manner adverbials. When wh-DPs act as predicates indicating object/activity, person or reason, they normally do not move, yet they can move under special circumstances; when wh-VPs act as manner adjuncts, they can be base-generated pre- or postverbally, and the wh-elements in both positions undergo optional movement. Finally, I propose that wh-in-situ is correlated with ditransitive verbs per se.
description: Quaderni di Linguistica e Studi Orientali, Vol. 7 (2021)
Additional file 5: of The R2R3-MYB transcription factor PaMYB10 is involved in anthocyanin biosynthesis in apricots and determines red blushed skin
Creators: name: Xi, Wanpeng
name: Feng, Jing
name: Liu, Yu
name: Zhang, Shikui
name: Zhao, Guohua
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology
subject: Computational Biology

description: Table S4. The primer sequences for qRT-PCR. (PDF 363 kb)
Gender and number morphology in Ethio-Eritrean semitic languages
Creators: name: Tewolde Johannes, Tesfay
Publisher: name: Quaderni di Linguistica e Studi Orientali
Year: 2021

description: The vowel -ā can be identified as a marker of nominal and verbal plurality in different Semitic and Afroasiatic languages. The vowels -ā (feminine plural) and -ū (masculine plural) which are used for both internal and external plurals are, according to Hasselbach (2007), derived from a verbal system and a predicative adjective. In Semitic languages, ā, ū and at (< a+t) mark gender and/or number. They are interdependent and can be used as classifiers. Based on the analysis of data from the languages in question, this article argues the Semitic gender and/or number markers indicated above and their reflexes -ačč, -očč, -o and -ot can be used as gender and/or number markers in Ethio-Eritrean Semitic languages. As in other Semitic languages, gender and number markers can function as classifiers in EES languages too. Even though there is interdependence of gender with number, the use of the former on verbal and nominal forms may be regarded as more original than the latter. However, more research is also needed to explore the diachronic relationship between them.
description: Quaderni di Linguistica e Studi Orientali, Vol. 7 (2021)
N-merge systems in adult and child grammars: a quantitative study on external arguments
Creators: name: Samo, Giuseppe
Publisher: name: Quaderni di Linguistica e Studi Orientali
Year: 2021

description: This paper explores quantitative results based on theoretical assumptions related to the predictions on N-merge systems (Rizzi 2016) ranked from minimum to a maximum of complexity in terms of the computational devices and derivational operations they require. We investigate the nature of external arguments focussing on 2-merge systems (two elements of the lexicon merge and the created unit is again merged with a further element directly extracted from the lexicon) and 3-merge systems (merge two elements created by previous operations of merge). We add a quantitative dimension to the established qualitative dimension discussed in the theory (Rizzi 2016) by investigating large-scale corpora representative of three populations of speakers: adult grammar (102 treebanks/101 languages), typically developing children (2 corpora/English and Chinese) and children with atypical development (1 corpus). The results confirm the predictions in Rizzi (2016): every language in our data set exploits 3-merge systems and less complex systems are the preferred options in early grammars.
description: Quaderni di Linguistica e Studi Orientali, Vol. 7 (2021)
Chomsky’s (2020) Links and linker phenomena
Creators: name: Manzini, M. Rita
Publisher: name: Quaderni di Linguistica e Studi Orientali
Year: 2021

description: In Section 1, I present a recent formalisation of modification and conjunction structures by Chomsky (2020), in terms of sequences of Pair-Merge units, each including a Link element identified with the nominaliser/verbaliser n/v. In Sections 2-3, I argue that the Link element is overtly visible in many languages in the form of (adnominal) linkers. In Section 4, I suggest that Case stacking, and Concord may also be viewed as externalizations of Links.
description: Quaderni di Linguistica e Studi Orientali, Vol. 7 (2021)
Additional file 6: of The R2R3-MYB transcription factor PaMYB10 is involved in anthocyanin biosynthesis in apricots and determines red blushed skin
Creators: name: Xi, Wanpeng
name: Feng, Jing
name: Liu, Yu
name: Zhang, Shikui
name: Zhao, Guohua
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Table S5. The primer sequences for 5â ˛ RACE and 3â ˛ RACE. (PDF 351 kb)
Towards Optimal and Expressive Kernelization for d-Hitting Set
Creators: name: van Bevern, René
Publisher: name: arXiv
Year: 2011
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: G.2.1; G.2.2; F.2.2; I.1.2
subject: 68R10

description: d-Hitting Set is the NP-hard problem of selecting at most k vertices of a hypergraph so that each hyperedge, all of which have cardinality at most d, contains at least one selected vertex. The applications of d-Hitting Set are, for example, fault diagnosis, automatic program verification, and the noise-minimizing assignment of frequencies to radio transmitters. We show a linear-time algorithm that transforms an instance of d-Hitting Set into an equivalent instance comprising at most O(k^d) hyperedges and vertices. In terms of parameterized complexity, this is a problem kernel. Our kernelization algorithm is based on speeding up the well-known approach of finding and shrinking sunflowers in hypergraphs, which yields problem kernels with structural properties that we condense into the concept of expressive kernelization. We conduct experiments to show that our kernelization algorithm can kernelize instances with more than 10^7 hyperedges in less than five minutes. Finally, we show that the number of vertices in the problem kernel can be further reduced to O(k^{d-1}) with additional O(k^{1.5 d}) processing time by nontrivially combining the sunflower technique with d-Hitting Set problem kernels due to Abu-Khzam and Moser.
description: This version gives corrected experimental results, adds additional figures, and more formally defines "expressive kernelization"
Elucidating cellular signaling mechanisms of anoikis resistance
Creators: name: Ng, Tony Ling Tin
Publisher: name: University of British Columbia
Year: 2014

description: Anoikis, which describes a physiologic apoptotic mechanism of non-hematopoietic cells that is triggered following detachment of cells from their native extracellular matrix, functions as a key process to prevent unwanted dissemination of cells from their intended organ site. Cancer cells, in contrast, develop mechanisms to suppress anoikis, allowing them to metastasize through the lymphovascular system to secondary organ sites. In this thesis, we utilized screening methodologies to identify novel signaling mechanisms of anoikis resistance in cancer cells. While a functional approach using an siRNA-based screen of Ewing sarcoma cells did not yield validatable hits, use of gene expression profiling demonstrated a remarkable resemblance of the cellular detachment process to various prototypical forms of cellular and bioenergetic stress, such as nutrient deprivation, hypoxia and endoplasmic reticulum stress. Correspondingly, activation of various cellular stress response pathways was demonstrated, which appear critical for mitigating this stress. In particular, two pathways were shown to play a role in anoikis resistance, mediated by TXNIP and AMPK. TXNIP, which has been shown to play a homeostatic role to modulate glucose metabolism, redox status and proliferation during stress states, was shown to be rapidly up-regulated following cellular detachment, and promotes anoikis in certain cell line models. AMPK is also rapidly activated, activating multiple downstream pathways to restore the bioenergetic status of detached cells, which show marked reduction in ATP levels following detachment. In particular, AMPK-mediated suppression of the mTORC1 pathway plays a particularly important role through the suppression of total protein synthesis levels, an otherwise energetically-costly anabolic process. Blockade of the AMPK pathway or restoration of mTORC1 activation in cancer cells help to restore anoikis, while direct inhibition of protein synthesis in AMPK-deficient cancer cells restores their ability to suppress anoikis. Overall, we show that activation of energy-conserving pathways, normally considered “tumor suppressive” in nature, in fact promotes survival of cancer cells in this early stage of metastasis. This highlights the ambiguous role of many such pathways, which can both promote and suppress tumor progression in a context-dependent manner.
Nonlinear characterization of microwave transistors by the means of pulsed I(V) and pulsed S-Parameters measurements
Creators: name: Teyssier, J.P.
name: Barataud, D.
name: Laloue, A.
name: Bouysse, Ph.
name: Quere, R
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: A versatile pulsed I(V) and 40 GHz pulsed S parameters measurement system of microwave transistors is described Capability of discrimination between thermal and trapping effects with a pulse set-up is demonstrated A method to measure electrically the thermal resistance and capacitance of transistors with a pulse set-up is proposed Finally, it is explained how to derive transistor nonlinear characteristics from these measurements for modeling purposes.
A method for characterising frequency dispersion and thermal effects independently in GaAs FETs
Creators: name: Rodríguez Tellez, J.
name: Mediavilla, A.
name: Fernández, T.
name: Tazón, A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: Static, pulsed and liquid crystal measurement results are presented for a 900um gate-width MESFET. The results indicate clearly that the device has a much slower thermal response time than was previously thought. The data indicate that the differences observed between the static and pulsed IV characteristics of the device are due to frequency dispersion and not to thermal effects, as is sometimes assumed.
Variational Inference for Generalized Linear Mixed Models Using Partially Noncentered Parametrizations
Creators: name: Tan, Linda S. L.
name: Nott, David J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computation (stat.CO)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: The effects of different parametrizations on the convergence of Bayesian computational algorithms for hierarchical models are well explored. Techniques such as centering, noncentering and partial noncentering can be used to accelerate convergence in MCMC and EM algorithms but are still not well studied for variational Bayes (VB) methods. As a fast deterministic approach to posterior approximation, VB is attracting increasing interest due to its suitability for large high-dimensional data. Use of different parametrizations for VB has not only computational but also statistical implications, as different parametrizations are associated with different factorized posterior approximations. We examine the use of partially noncentered parametrizations in VB for generalized linear mixed models (GLMMs). Our paper makes four contributions. First, we show how to implement an algorithm called nonconjugate variational message passing for GLMMs. Second, we show that the partially noncentered parametrization can adapt to the quantity of information in the data and determine a parametrization close to optimal. Third, we show that partial noncentering can accelerate convergence and produce more accurate posterior approximations than centering or noncentering. Finally, we demonstrate how the variational lower bound, produced as part of the computation, can be useful for model selection.
description: Published in at http://dx.doi.org/10.1214/13-STS418 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Recent technological advances for modular active harmonic load-pull measurement systems
Creators: name: Ferrero, A.
name: Madonna, GianLuigi
name: Pisani, Umberto
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: Load-pull systems are today widely accepted as fundamental tools for non-linear performance evaluation, from device design and modeling in R&D labs to MMIC production testing. This paper presents an overview of the recent innovations in load-pull measurements. After a brief introduction on novelties regarding passive set-ups, the survey deals with technological advances for active systems. Finally, a realization of a modular broadband system for on-wafer measurements in the 0.5-18 GHz frequency range is described. S-parameter capability up to 26.5 GHz is also integrated, and the system is easily configurable for harmonic source-pull measurements.
Physics of future ultra high speed transistors - part 1: HBT
Creators: name: Kasper, Erich
name: Eberhardt, Jochen
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: An overview about current status of SiGe-HBT production is given. Advanced SiGe-HBTs are predicted to reach in near future fT=200 GHz. Design examples are given.
Deformations of free and linear free divisors
Creators: name: Torielli, Michele
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We investigate deformations of free and linear free divisors. We introduce a complex similar to the de Rham complex whose cohomology calculates deformation spaces. This cohomology turns out to be zero for many linear free divisors and to be constructible in many cases
description: This is the final version of the article that will appear in the Annales de l'Institut Fourier, Volume 63, 2013
title: Friedrich, Ernst
title: Friedrich, Ernst
Creators: name: Brandt, Susanne
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Friedrich, Ernst
subject: Friedrich, Ernst

description: Ernst Friedrich was the founder of Germany’s only anti-war museum. When the museum was destroyed by the National Socialist regime, Friedrich went into exile in France and joined the resistance. Until his death in 1967, he worked tirelessly for reconciliation and peace education. In 1982, his grandson succeeded in re-establishing the anti-war museum in Berlin.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
The morphosyntactic interaction of kinship terms with evaluative morphemes in Italian
Creators: name: Franco, Ludovico
Publisher: name: Quaderni di Linguistica e Studi Orientali
Year: 2021

description: In this brief paper, we address the interaction between evaluative morphology and kinship terms introduced by possessives in Italian, showing that the application of evaluative affixes influences the syntactic context in which kinship terms can be employed: they cannot be introduced by a bare determiner when evaluative morphemes attach to the lexical root. We argue that this (trivial) empirical observation has some clear consequences from a theoretical viewpoint: the fact that derivational morphemes, such as evaluatives, alter the syntactic environment in which a noun is couched supports the theory of grammar advanced in Manzini and Savoia (2007, 2011), who assume that Merge takes morphemes as its input and single morphemes are fully visible to the syntactic computation.
description: Quaderni di Linguistica e Studi Orientali, Vol. 7 (2021)
title: Making Sense of the War (Denmark)
title: Making Sense of the War (Denmark)
Creators: name: Bendtsen, Bjarne Søndergaard
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Dänemark
subject: Weltkrieg [1914-1918]
subject: World War, 1914-1918
subject: Denmark

description: Denmark was declared neutral at the outbreak of the war in 1914, and in a message issued in the name of the Danish king on 1 August, the Danes were urged to refrain from commenting on or demonstrating for or against any of the warring nations. This was especially meant to reassure Germany that Denmark did not pose a threat. As the war progressed, Danish authors and intellectuals did, nonetheless, engage in all kinds of fierce debates about the war, not least about the role of the country’s southern neighbour and principal enemy since the Schleswig Wars, Germany, the atrocities in Belgium, as well as the responsibility for starting the war.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Physics of future ultra high speed transistors - Part II: new concepts
Creators: name: Kasper, E.
name: Reitemann, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: SiGe/Si - MODFETs have obtained encouraging results with maximum oscillation frequencies for p- and n-channel devices around 100 GHz. The SiGe/Si system is the only one with nearly symmetrical transport properties of holes and electrons. Future development of silicon based ultra high frequency devices will be strongly influenced by integration demands, quality of MOS gates on heterostructures, strained layer engineering and band ordering. Devices which exploit tunnelling, coherent transport and transit time effects will gain importance. Room temperature tunnelling via SiGe quantum wells and quantum dots is proposed and partly tested. Resonance phase operation may allow oscillators with defined frequencies above the conventional frequency limits.
RF transmission lines on silicon substrates
Creators: name: Ponchak, George E.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: A review of RF transmission lines on silicon substrates is presented. Through measurements and calculated results, it is shown that attenuation is dominated by conductor loss if silicon substrates with a resistivity greater than 2500 Q-cm are used. Si passivation layers affect the transmission line attenuation; however, measured results demonstrate that passivation layers do not necessarily increase attenuation. If standard, low resistivity Si wafers must be used, alternative transmission lines such as thin film microstrip and CPW on thick polyimide layers must be used. Measured results presented here show that low loss per unit length is achievable with these transmission lines.
Chaos in Si MMIC oscillators
Creators: name: Suárez, Almudena
name: Sancho, Sergio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: This paper analyzes the dynamics of two Si circuits in miliimetric band for which chaotic responses had been experimentally observed. The aim has been to determine, in each case, the particular phenomena leading to the chaotic response, in order to avoid this behavior in future realizations of these circuits. The most influential parameters have been determined, analyzing the routes to chaos under variations of these parameters. Then some frequency-domain techniques have been developed for the detection of the initial bifurcations taking place in these routes from standard harmonic-balance simulators. This should be more efficient in terms of design time and enable the chaos prediction when time domain simulations are not well suited. Two circuits based on an IMPATT diode have been analyzed, one of them being a self-oscillating mixer, obtaining very good agreement with former experimental observations.
title: Kreß von Kressenstein, Friedrich Freiherr
title: Kreß von Kressenstein, Friedrich Freiherr
Creators: name: Stein, Oliver
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Kress von Kressenstein, Friedrich
subject: Kress von Kressenstein, Friedrich, 1870-1948

description: Kreß von Kressenstein was a Bavarian-German officer who, as member of the German military mission in the Ottoman Empire, led the offensives on the Suez Canal and the defense of Gaza. In June 1918, he left for Georgia as the head of the “German delegation in the Caucasus.”
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
The impact of silicon technology on future microwave systems
Creators: name: Larson, Lawrence E.
name: De Vreede, Leo C.N.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: Silicon technology has made rapid progress in the field of microwave technology in the last decade, and is now poised to be the dominant microwave semiconductor technology for the next ten years, This paper summarizes the key recent developments in this field, and suggest possibilities for future technological improvements.
Bilingualism and (outward) over-explicitness in the choice of subject anaphoric devices
Creators: name: Di Domenico, Elisa
Publisher: name: Quaderni di Linguistica e Studi Orientali
Year: 2021

description: In this work we propose an explanation (the Decreased Activation Hypothesis) for some prima facie conflicting findings concerning the choice/interpretation of subject anaphoric devices in late bilinguals (LBs). While some studies report an overuse of overt pronouns (often claimed to be a default form employed by LBs), other studies report an overuse of lexical DPs (interpreted as a sign of LBs’ over-explicitness). Our proposal is that over-explicitness in bilinguals is just outward and the use of seemingly over-explicit forms (overt pronouns or lexical DPs) stems from LBs difficulty to cope with referents’ activation. Then, starting from the observation that whenever overuse of overt pronouns is reported a null subject language is at least involved, and whenever overuse of lexical DPs is reported a non-null subject language is at least involved, we explore the way in which subject anaphoric devices are employed in (some) null subject languages and in (some) non-null subject languages, finally arguing that LBs of a null and a non-null subject language may choose to be seemingly overexplicit in two different ways.
description: Quaderni di Linguistica e Studi Orientali, Vol. 7 (2021)
AlGaN/GaN on SiC HFETs for microwave power amplifiers
Creators: name: Wang, K. L.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: This paper will describe the development of AlGaN/GaN Heterojunction Field Effect Transistors (HFETs) on SiC for high frequency and high power applications. GaN offers many advantages including high temperature, high breakdown voltage, and high thermal conductivity for high power microwave applications. Previously, work has been mostly focused on HFET or HEMT devices on sapphire substrate. High current and high power potentials have been discussed. High frequency performance (Fmax of about 97 GHz)]  and high current density (1.43 A/mm) have been separately shown. The progress mainly came from the improved material quality and the advances in fabrication technology including the reduction in contact resistance. However, owing to the thermal dissipation issue involved with sapphire substrates, the potential for high power microwave devices has not been realized. This paper will discuss the development of microwave GaN HFET and power amplifier effort on SiC. The use of SiC substrate with its high thermal conductivity offers realizable power applications. Again, significant progress has been made recently for HFET on SiC due to the improved material quality and the advances in fabrication technology including the reduction of contact resistance. Specifically, Al0.2Ga0.8N/GaN HFET with an output power of 2.3 W at lOGHz on semi-insulating SiC substrate has been demonstrated. Likewise, with a higher Al content, e.g., Al0.3Ga0.7N/GaN, a higher current capacity with improved ohmic contacts has been attained . We will discuss the progress of materials, technology, device design, and power and noise performance.
Quillen homology for operads via Gröbner bases
Creators: name: Dotsenko, Vladimir
name: Khoroshkin, Anton
Publisher: name: arXiv
Year: 2012
Subjects: subject: K-Theory and Homology (math.KT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18G10 (Primary) 13P10, 16E05, 18D50, 18G55 (Secondary)

description: The main goal of this paper is to present a way to compute Quillen homology of operads. The key idea is to use the notion of a shuffle operad we introduced earlier; this allows to compute, for a symmetric operad, the homology classes and the shape of the differential in its minimal model, although does not give an insight on the symmetric groups action on the homology. Our approach goes in several steps. First, we regard our symmetric operad as a shuffle operad, which allows to compute its Gröbner basis. Next, we define a combinatorial resolution for the "monomial replacement" of each shuffle operad (provided by the Gröbner bases theory). Finally, we explain how to "deform" the differential to handle every operad with a Gröbner basis, and find explicit representatives of Quillen homology classes for a large class of operads. We also present various applications, including a new proof of Hoffbeck's PBW criterion, a proof of Koszulness for a class of operads coming from commutative algebras, and a homology computation for the operads of Batalin-Vilkovisky algebras and of Rota-Baxter algebras.
description: 41 pages, this paper supersedes our previous preprint arXiv:0912.4895. Final version, to appear in Documenta Math