cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Process-Tolerant High Linearity MMIC Power Amplifiers
Creators: name: Palomba, Francesco
name: Pagani, Maurizio
name: De Francesco, I.
name: Meazza, Andrea
name: Mornata, Alessandro
name: Procopio, Gregorio
name: Sivverini, Giuseppe
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: ING-INF/01 Elettronica

description: The success of an MMIC design is strongly influenced by the process tolerances and model inaccuracies. In fact the MMIC technology is tuneless and all the problems related to the component tolerances must be taken into account in the design phase. This issue is even more relevant in high linearity power amplifiers. In this kind of devices many different parameters (P1dB, PAE, C/I) shall be simultaneously optimized, and, if not properly taken into account, process tolerances may affect the device performances, compromising the fulfillment of the desired requirements. In this paper the most relevant uncertainty sources and the factors influencing the process tolerances will be analyzed, giving the guidelines to keep under control the effect of process variation parameters and model inaccuracies.
Untersuchung über die Herkunft des Gesteinsmaterials der römischen Weihedenkmäler und Baureste von Morken-Harff
Creators: name: Frechen, Josef
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Bonner Jahrbücher, Bd. 160 (1960): Bonner Jahrbücher
Iranotrogus Nikolajev 2006
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Iranotrogus

description: Iranotrogus Nikolajev, 2006
[1 species].
Type species Chioneosoma deserti Baraud, 1987, by original designation.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 130, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Diffusion behavior of delta-doped Si in InAlAs/InP heterostructures
Creators: name: Sugiyama, Hiroki
name: Yokoyama, Haruki
name: Watanabe, Kazuo
name: Kobayashi, Takashi
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: Diffusion behavior of delta-doped Si in InAlAs and InP was studied by using secondary ion mass spectroscopy. A significant broadening of the profile due to postgrowth annealing was observed in In0.52Al0.48As. In contrast, the depth profile of delta-doped Si in InP was scarcely changed by annealing. This indicates that the diffusion coefficient of delta-doped Si in InP is much smaller than that in In0.52Al0.48As. Suppression of Si diffusion by using a delta-doped InP layer as the carrier supply layer (CSL) improves the thermal stability of the InP-HEMT structures.
N-Butyrylated hyaluronic acid ameliorates gout and hyperuricemia in animal models
Creators: name: Li, Lanzhou
name: Wang, Di
name: Wang, Xueju
name: Bai, Ruifeng
name: Wang, Chunyu
name: Gao, Yin
name: Anastassiades, Tassos
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Physiology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Context: Hyaluronic acid (HA) plays critical roles in the structural skeleton, joint lubrication, renal function and cell signaling. We previously showed that partially N-butyrylated, low molecular weight, hyaluronic acid (BHA) exhibited an anti-inflammatory effect in cultured human macrophage, where inflammation was induced either by a TL-4 agonist or the low molecular weight HA itself, in dose-dependent fashion. Objectives: To investigate the anti-inflammatory, antioxidative, and antihyperuricemic effects of BHA using animal models of acute gouty arthritis and hyperuricemia. Materials and methods: The anti-inflammatory effect of articular BHA (10 and 50 μg) injections was evaluated by measuring joint swelling and the serum levels of inflammatory cytokines in a model of acute gouty arthritis induced by intra-articular injection of monosodium urate crystals in Wistar rats (n = 10/group), in comparison to the control group with saline injection. Antioxidative and antihyperuricemic activities were investigated using intraperitoneal injections of oteracil potassium and yeast extract hyperuricemic Balb/C mice, which were treated with intraperitoneal injection of BHA at day 6–8 in the model. Results: In the gouty arthritis rat model, BHA at a higher dosage (50 μg) demonstrated a strong anti-inflammatory effect by reducing the degree of articular swelling and the serum levels of IL-1β, IL-8, IFN-γ, and MCP-1 by 5.56%, 6.55%, 15.58% and 33.18%. In the hyperuricemic mouse model, lower dosage BHA (10 μg) was sufficient to provide antioxidative activities by significantly decreasing the ROS levels in both serum and liver by 14.87% and 8.04%, while improving liver SOD by 12.77%. Intraperitoneal injection of BHA suppressed uric acid production through reducing liver XO activity by 19.78% and decreased the serum uric acid level in hyperuricemic mice by 30.41%. Conclusions: This study demonstrated for the first time that BHA exhibits anti-inflammatory, antioxidative and antihyperuricemic effects in vivo, suggesting a potential therapeutic application of BHA in gouty arthritis and hyperuricemia.
Analysis of Odd-Mode Parametric Oscillations in HBT Multi-Stage Power Amplifiers
Creators: name: Anakabe, A.
name: Collantes, J.M.
name: Portilla, J.
name: Jugo, J.
name: Mons, S.
name: Mallet, A.
name: Lapierre, L.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: ING-INF/01 Elettronica

description: In this paper a technique for predicting odd-mode parametric oscillations from the analysis of exact pole-zero cancellations that take place in the frequency response obtained at some specific nodes of power amplifiers is presented. By using this technique the nature of parametric oscillations can be determined, which allows establishing a suitable strategy for circuit stabilization. The proposed methodology has been applied to the analysis and elimination of parametric odd-mode oscillations in an X- band two-stage MMIC power amplifier. The analysis has been complemented with the harmonic-balance calculation of the odd-mode frequency-divided steady-state solution.
Weakly Admissible Vector Equilibrium Problems
Creators: name: Hardy, Adrien
name: Kuijlaars, Arno B. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We establish lower semi-continuity and strict convexity of the energy functionals for a large class of vector equilibrium problems in logarithmic potential theory. This in particular implies the existence and uniqueness of a minimizer for such vector equilibrium problems. Our work extends earlier results in that we allow unbounded supports without having strongly confining external fields. To deal with the possible noncompactness of supports, we map the vector equilibrium problem onto the Riemann sphere and our results follow from a study of vector equilibrium problems on compacts in higher dimensions. Our results cover a number of cases that were recently considered in random matrix theory and for which the existence of a minimizer was not clearly established yet.
description: 16 pages
Small but mighty : a global reconsideration of small-scale fisheries.
Creators: name: Govender, Rhona
Publisher: name: University of British Columbia
Year: 2013

description: Small-scale (SS) fisheries have sustained people for millennia and are pervasive in coastal communities across the globe. Now, the future of what was once believed to be an endless supply of resources remains uncertain given current conditions. The small-scale fisheries sector employs over 34 million fishers, which is at least 24 times more than industrial fisheries. The vast majority of these small-scale fishers reside in developing countries, and strongly rely on these resources for food security and poverty alleviation. Despite their significance, global marine fisheries have been deeply troubled in recent history due to overfishing and inadequate management practices. It is imperative that policy makers base their decisions on reliable data in order to adequately manage this troubling situation, however, current information regarding the small-scale fisheries sector is dubious at best. After compiling data as to what constitutes a small-scale fishery and the associated catch, by country, a multiple linear regression was used to predict data for countries where none was obtained. Human development index (HDI), inshore fishing area (IFA), and whether or not the data came from the FAO, can be used to explain the variance in catch, and predict catch where countries are missing data. The multiple linear regression in Chapter 3 provided the global SS fisheries catch estimate of 25 million tonnes, which is 19% higher than the previous estimates. It is crucial to note that this catch is almost equivalent to the estimated 29 million tonnes bound for human consumption from the industrial sector. In addition, it was seen that data originating from the FAO underestimates the catch in this sector, which is congruent with qualitative information obtained from the literature search in Chapter 1. Lastly, countries with a low HDI were found to catch more (5.29 t∙km²) per unit area than those that are highly developed (1.76 t∙km²).
A Globally-Continuous, Charge-Conservative, Non-linear Equivalent Circuit Model For RF MOSFETs
Creators: name: Ó HAnnaidh, Breandán
name: Brazil, Thomas J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: ING-INF/01 Elettronica

description: A non-linear equivalent circuit model for MOSFETs valid for DC, small and large-signal sim-ulations of high frequency circuit design is presented. The model is valid for a wide range of bias conditions and is globally continuous. Capacitances are derived from a single charge model and charge conservation is taken into account. Simulations of the model, following parameter extraction, are validated by comparisons with experimental data.
Frequency synthesis from 2 to 30 GHz using a 0.35 µm BiCMOS SiGe technology
Creators: name: Coustou, A.
name: Sie, M.
name: Dubuc, D.
name: Graffeuil, J.
name: Tournier, E.
name: Llopis, O.
name: Plana, R.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: ING-INF/01 Elettronica

description: In this paper, we present a 10/30GHz MMIC Tripler, an X-band VCO and a frequency divider using a 0.35 µm, 60 GHz-fMAX MMIC BiCMOS SiGe technology. The Tripler exhibits a conversion gain of -5 dB and a low additive phase noise of –143dBc/Hz at a frequency offset of 100kHz is anticipated. In order to drive this Tripler, the design of a MMIC X-band VCO and its measured performance (0.8GHz tuning range, -5 dBm output power and –87dBc/Hz phase noise @ 100kHz of carrier) is also reported. This X band VCO can also drive a frequency divider, developed in the same technology. The assembling of these circuits allows the design of a 2 GHz frequency synthesizer. Measurements have shown a phase noise of -99dBc/ Hz at a frequency offset of 100kHz. Therefore, this paper demonstrates the great capabilities of BiCMOS SiGe MMIC technology about frequency synthesis ranging from 2GHz to 30GHz.
Lasiexis Semenov-tian-shanskii & Medvedev 1936
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Lasiexis

description: Lasiexis Semenov-Tjan-Shansky & Medvedev, 1936
[9 species].
Type species Ancylonycha dilaticollis Ballion, 1870, by original designation.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 130, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Thermal Stability of Beryllium Doped InP/InGaAs Single and Double HBTs Grown by Solid Source Molecular Beam Epitaxy
Creators: name: Sexton, James
name: Missous, Mohammed
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: ING-INF/01 Elettronica

description: Heavily Beryllium doped (~1.5 ×10 19 cm -3 ) InP/InGaAs single heterojunction bipolar transistors (SHBTs) and double heterojunction bipolar transistors (DHBTs) have been successfully grown by solid source molecular beam epitaxy (SSMBE). The epitaxial growth was performed on a VG 90H MBE system with 100mm wafer growth capability. The novelty of this process was the use of dimeric phosphorus generated from a gallium phosphide (GaP) decomposition source which permitted growth at fairly low temperature (420 o C) while conserving extremely high quality materials. Thermal stability studies were then performed on the heavily doped HBTs using postgrowth annealing in an N2 ambient. The devices were annealed over a temperature range of 350-550 o C for 15 minutes prior to fabrication. The relatively low growth temperature of ~420 o C and the use of stoichiometric conditions for both the arsenides and phosphide materials produced remarkably thermally stable, high-gain SHBTs and DHBTs up to annealing temperatures of 550 o .
Managing anxiety through childhood social-emotional development
Creators: name: Dohl, Adriane Hannah
Publisher: name: University of British Columbia
Year: 2013

description: School professionals are implementing a universal social-emotional learning program for children in Kindergarten and Grade 1 (aged 4-6 years) in many schools across the province with training and funding provided by the government. The Fun FRIENDS (Barrett, 2007) program focuses on increasing social-emotional learning and promotes coping techniques and resiliency in order to prevent the onset of behavioural and emotional disorders (Pahl & Barrett, 2007). Preliminary results (Pahl & Barrett, 2007, 2010) have highlighted the effectiveness of the Fun FRIENDS program in reducing anxiety in children. The present study utilized a quasi-experimental design to evaluate the effectiveness of the Fun FRIENDS program in reducing anxiety and promoting social-emotional competence among a sample of Kindergarten and Grade 1 students (N = 33) in a British Columbia school district. Results revealed a significant decrease in program participants’ anxiety symptoms as rated by teachers when compared with those in the control group. Teachers also reported that children who participated in the program had significant increases in social-emotional skills, while those in the control group’s skills remained the same. However, overall, children in the control group had significantly higher social-emotional skills, as rated by teachers. No significant results were found for parent rated levels of anxiety or social-emotional skills of children enrolled in either condition. Despite limitations of the study, the overall results demonstrate promising outcomes for students who participate in the Fun FRIENDS program.
Lasiopsis Erichson 1848
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Lasiopsis

description: Lasiopsis Erichson, 1848
[9 species].
Type species Melolontha henningii Fischer, 1823, by monotypy.
Askeptonycha Kraatz, 1883b.
Type species Rhizotrogus sahlbergi Mannerheim, 1849, by subsequent designation of Smetana & Král (2006).
Synonymy by Reitter (1889).
Lachnota Reitter, 1889.
Type species Melolontha henningii Fischer, 1823, by monotypy.
Objective synonym of Lasiopsis Erichson.
Brahmina (Brahminula) Medvedev, 1951.
Type species Brahmina alatavic a Semenov-Tjan-Shansky, 1925, by original designation.
Synonymy with Brahmina (Lasiobrahmina) Medvedev, 1951 by Nikolajev (1974).
Brahmina (Lasiobrahmina) Medvedev, 1951.
Type species Lasiopsis duchoni Reitter, 1902, by original designation.
Synonymy by Smetana & Král (2006).
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 130, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
A description of a class of finite semigroups that are near to being Malcev nilpotent
Creators: name: Jespers, E.
name: Shahzamanian, M. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: In this paper we continue the investigations on the algebraic structure of a finite semigroup $S$ that is determined by its associated upper non-nilpotent graph $\mathcal{N}_{S}$. The vertices of this graph are the elements of $S$ and two vertices are adjacent if they generate a semigroup that is not nilpotent (in the sense of Malcev). We introduce a class of semigroups in which the Mal'cev nilpotent property lifts through ideal chains. We call this the class of \B\ semigroups. The definition is such that the global information that a semigroup is not nilpotent induces local information, i.e. some two-generated subsemigroups are not nilpotent. It turns out that a finite monoid (in particular, a finite group) is \B\ if and only if it is nilpotent. Our main result is a description of \B\ finite semigroups $S$ in terms of their associated graph ${\mathcal N}_{S}$. In particular, $S$ has a largest nilpotent ideal, say $K$, and $S/K$ is a 0-disjoint union of its connected components (adjoined with a zero) with at least two elements.
Large deviations principle for Curie-Weiss models with random fields
Creators: name: Löwe, Matthias
name: Meiners, Raphael
name: Torres, Felipe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F10, 82B44

description: In this article we consider an extension of the classical Curie-Weiss model in which the global and deterministic external magnetic field is replaced by local and random external fields which interact with each spin of the system. We prove a Large Deviations Principle for the so-called {\it magnetization per spin} $S_n/n$ with respect to the associated Gibbs measure, where $S_n/n$ is the scaled partial sum of spins. In particular, we obtain an explicit expression for the LDP rate function, which enables an extensive study of the phase diagram in some examples. It is worth mentioning that the model considered in this article covers, in particular, both the case of i.\,i.\,d.\ random external fields (also known under the name of random field Curie-Weiss models) and the case of dependent random external fields generated by e.\,g.\ Markov chains or dynamical systems.
description: 11 pages
Ohmic Heating Suspends, not Reverses, the Cooling Contraction of Hot Jupiters
Creators: name: Wu, Yanqin
name: Lithwick, Yoram
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We study the radius evolution of close-in extra-solar jupiters under Ohmic heating, a mechanism that was recently proposed to explain the large observed sizes of many of these planets. Planets are born with high entropy and they subsequently cool and contract. We focus on two cases: first, that ohmic heating commences when the planet is hot (high entropy); and second, that it commences after the planet has cooled. In the former case, we use analytical scalings and numerical experiments to confirm that Ohmic heating is capable of suspending the cooling as long as a few percent of the stellar irradiation is converted into Ohmic heating, and the planet has a surface wind that extends to pressures of ~10 bar or deeper. For these parameters, the radii at which cooling is stalled are consistent with (or larger than) the observed radii of most planets. The only two exceptions are WASP-17b and HAT-P-32b. In contrast to the high entropy case, we show that Ohmic heating cannot significantly re-inflate planets after they have already cooled. This leads us to suggest that the diversity of radii observed in hot jupiters may be partially explained by the different epochs at which they are migrated to their current locations.
description: expanded the discussion, added one figure, accepted to ApJ
Bildungsverläufe von sprachbehinderten Schülerinnen und Schülern - exemplarisch dargestellt an der ehemaligen Schülerschaft der "Sprachheilschule Halle"
Creators: name: Thielebein, Antje Simone
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 370

description: Bildung, nimmt im Lebenslauf- und Erwerbsverlauf eines jeden Menschen einen besonderen Stellenwert ein. Bildungsverläufe gestalten sich in den einzelnen Lebensphasen unterschiedlich. Kinder, deren individuelle Ausgangslage durch eine Sprachbehinderung gekennzeichnet ist, sind auf eine professionelle Unterstützung im Schulalltag angewiesen, um effizient lernen zu können. Für den Bildungserfolg der Schüler könnte die Sprachbehinderung schwerwiegende Auswirkungen haben. Möglicherweise besteht bei diesen Kindern ein erhöhtes Risiko für einen deutlich schlechteren Bildungsverlauf. Deshalb muss ihren individuellen Lernvoraussetzungen mit einem spezifischen, sonderpädagogischen Unterstützungs- und Förderbedarf entsprochen werden, um ihnen einen positiven Bildungsverlauf zu ermöglichen. Die individuellen lebensbegleitenden Umstände der Schüler werden durch Dokumentenanalyse zurückverfolgt. In dem Zusammenhang wird mittels Fragebogenerhebung die Frage beantwortet, ob Schüler mit einem festgestellten sonderpädagogischem Förderbedarf Sprache, die eine Sprachheilschule besuchten, Schul- und Berufsabschlüsse erreicht haben.
description: Throughout the course of life and the employment history of every individual, education plays a crucial role. Education journeys, thus, take different paths depending on the respective stage of life. Children, whose individual starting point in the journey is determined by Specific Language Impairment (SLI), rely heavily on professional support in everyday schooling, in order to learn effectively. SLI can seriously influence the students‘ educational success. For those children, the risk of experiencing a considerably less successful education journey may increase substantially. This is why the specific special educational support has to be adapted to the students’ individual learning requirements, allowing for a positive education journey. The students’ individual lifelong circumstances are traced back through documents analysis. A survey is used to answer the question whether students with established language related special educational needs, who attended a Sprachheilschule, achieved school qualification or professional qualification.
A precision T/R module for X-band SAR applications
Creators: name: Adolph, M.
name: Dreher, H.
name: Höfer, G.
name: Ludwig, M.
name: Rieger, R.
name: Stutzig, U.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: T/R modules suitable for spaceborne SAR instruments have to fulfil very demanding requirements as given by the challenging environmental and electrical conditions in space. For this application a T/R module has been designed and realized which operates in X-Band and handles the temperature range from -20° to 60°C with full amplitude and phase stability. A low loss switch enables two polarisations alternatively or multiplexed in time. The output power of the module is 7 Watts over a wide bandwidth stabilized by a power control loop. The noise figure is as low as 3.2 dB. Amplitude control will be done by a phase stable variable gain amplifier (VGA), which is also used for temperature compensation. A 7-bit phase shifter is utilized for phase setting and phase compensation over temperature. The overall module efficiency at 10 % duty cycle is better than 18 % at ambient. This efficiency bases on radar mode operation, which means that the power consumption of the transmit path, receive path and the entire control electronic is taken into account. The paper will discuss the chosen architecture, critical components as well as the measured data of the T/R modules with respect to SAR system requirements. The paper will also give an outlook to advanced components and technologies for cost effective high volume production necessary for complete antenna integrations in the very near future.
Ein Vergleich der laparoskopischen radikalen Prostatektomie und der offenen retropubischen radikalen Prostatektomie in Bezug auf die postoperative Kontinenzrate
Creators: name: Rothamel, Martin
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2010
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 617

description: Zielsetzung: Das Ziel der Studie ist, funktionelle Ergebnisse bezüglich der postoperativen Kontinenz nach offener retropubischer radikaler Prostatektomie (ORPE) und laparoskopischer extraperitonealer radikaler Prostatektomie (LRPE) zu vergleichen. Material und Methoden: 2004-2005 wurden von 61 Patienten (LRPE 34; ORPE 27) Daten gesammelt. Ergebnisse: Die Operationszeit der ORPE (148,5 min) war niedriger (p<0,05) als die der LRPE (257 min). Der intraoperative Blutverlust war bei der LRPE-Gruppe geringer (LRPE 322,2 ml; ORPE 866,7 ml; p<0,05). Die Komplikationen, die Harnblasen-Katheterverweildauer, die stationäre Behandlungszeit und die onkologischen Ergebnisse zeigten dagegen keine Unterschiede (p>0,05). Nach einem, nach drei und nach sechs Monaten waren in der ORPE-Gruppe 11,1%, 65,4% und 88,5% und in der LRPE-Gruppe 8,8%, 54,5% und 78,1% kontinent ( p>0,05). Schlussfolgerung: Mit der Studie wird bestätigt, dass beide Verfahren zu gleichwertigen Ergebnissen bezüglich perioperativer und funktioneller Parameter führen, mit Vorteilen der LRPE für die Krankenhausverweildauer und dem intraoperativen Blutverlust.
Lasiotropus Reitter 1913
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Lasiotropus

description: Lasiotropus Reitter, 1913
[1 species].
Type species Lasiotropus poonensis Reitter, 1913, by monotypy.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 130, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Fab Four: When John and George play gravitation and cosmology
Creators: name: Bruneton, Jean-Philippe
name: Rinaldi, Massimiliano
name: Kanfon, Antonin
name: Hees, Aurélien
name: Schlögel, Sandrine
name: Füzfa, André
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Scalar-tensor theories of gravitation have recently regained a great interest after the discovery of the Chameleon mechanism and of the Galileon models. The former allows, in principle, to reconcile the presence of cosmological scalar fields with the constraints from experiments at the Solar System scale. The latter open up the possibility of building inflationary models that, among other things, do not need ad hoc potentials. Further generalizations have finally led to the most general tensor-scalar theory, recently dubbed the "Fab Four", with only first and second order derivatives of the fields in the equations of motion and that self-tune to a vanishing cosmological constant. This model has a very rich phenomenology that needs to be explored and confronted with experimental data in order to constrain a very large parameter space. In this paper, we present some results regarding a subset of the theory named "John", which corresponds to a non-minimal derivative coupling between the scalar field and the Einstein tensor in the action. We show that this coupling gives rise to an inflationary model with very unnatural initial conditions. Thus, we include a non-minimal, but non-derivative, coupling between scalar field and Ricci scalar, a term named "George" in the Fab Four terminology. In this way, we find a more sensible inflationary model, and, by performing a post-newtonian expansion of spherically symmetric solutions, we derive the set of equations that constrain the parameter space with data from experiments in the solar system.
description: Minor changes, references added. Version accepted for publication in Advances in Astronomy
Magnetic ordering and multiferroicity in MnI$_2$
Creators: name: Wu, Xianxin
name: Cai, Yingxiang
name: Xie, Qing
name: Weng, Hongming
name: Fan, Heng
name: Hu, Jiangping
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Density-functional calculations are carried out to investigate incommensurate magnetic structures and ferroelectric polarization in newly discovered multiferroic material MnI$_2$. The exchange interactions among local moments on Mn are parameterized by mapping the mean-field Heisenberg model on to total energy difference of several magnetic ordering states. The experimentally observed noncollinear magnetic states are well reproduced by using this model and exchange interaction parameters. The direction of polarization experimentally measured is also consistent with the result derived from the symmetry analysis of the magnetically ordered state. In particular, we find that the inter-plane magnetic exchange coupling is pivotal to the emergence of the spiral magnetic structure. This noncollinear magnetic structure, combined with spin-orbit coupling mainly from I ions, is responsible for the appearance of ferroelectric polarization.
description: 9 pages, 8 figures, published version
Latipalpus Moser 1921
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Latipalpus

description: Latipalpus Moser, 1921a
[8 species].
Type species Holotrichia maxillata Brenske, 1892, by original designation.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 130, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Additional file 5 of Fungal and bacterial microbiome dysbiosis and imbalance of trans-kingdom network in asthma
Creators: name: Huang, Chunrong
name: Yu, Youchao
name: Du, Wei
name: Liu, Yahui
name: Dai, Ranran
name: Tang, Wei
name: Wang, Ping
name: Zhang, Chenhong
name: Shi, Guochao
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 5: Fig. S2. Circular representation of mycobiome communities visualized by Circos software. The outmost circles list names of three groups and mycobiome community composition. The length of the bars on the second ring represented the percentage of phyla or genera in three groups (left side of the diagram), and the percentage of sample in phyla or genus. The connecting lines inside the third circle link the phylum or genus to the groups and the width of the line indicates the relative abundance. The outset cycles were coloured according to the software default setting.
Quadpack X-band T/R module for active phased array radar
Creators: name: Bennett, J.
name: Lewinski, K.
name: Shearing, P.
name: Velsher, B.
name: Van Houten, J.
name: Tiesinga, A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: A four-element Transmit/Receive Module (Quadpack) design is presented, with two independent receive channels per element for application in the X-band Active Phase Array Radar. This wideband T/R Module features typical output powers of 8W pulsed and 5W CW, typical 5 dB Noise Figure with six-bit amplitude and phase control. The CW-mode of operation enables missile illumination and guidance. Sophisticated packaging together with appropriate MMIC technologies resulted in a high yielding and high performance T/R Module, of which more than 1000 Quadpacks (4000 elements) have been manufactured to date.
Non-abelian symmetries in tensor networks: a quantum symmetry space approach
Creators: name: Weichselbaum, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A general framework for non-abelian symmetries is presented for matrix-product and tensor-network states in the presence of orthonormal local as well as effective basis sets. The two crucial ingredients, the Clebsch-Gordan algebra for multiplet spaces as well as the Wigner-Eckart theorem for operators, are accounted for in a natural, well-organized, and computationally straightforward way. The unifying tensor-representation for quantum symmetry spaces, dubbed QSpace, is particularly suitable to deal with standard renormalization group algorithms such as the numerical renormalization group (NRG), the density matrix renormalization group (DMRG), or also more general tensor networks such as the multi-scale entanglement renormalization ansatz (MERA). In this paper, the focus is on the application of the non-abelian framework within the NRG. A detailed analysis is given for a fully screened spin-3/2 three-channel Anderson impurity model in the presence of conservation of total spin, particle-hole symmetry, and SU(3) channel symmetry. The same system is analyzed using several alternative symmetry scenarios. This includes the more traditional symmetry setting SU(2)^4, the larger symmetry SU(2)*U(1)*SU(3), and their much larger enveloping symplectic symmetry SU(2)*Sp(6). These are compared in detail, including their respective dramatic gain in numerical efficiency. In the appendix, finally, an extensive introduction to non-abelian symmetries is given for practical applications, together with simple self-contained numerical procedures to obtain Clebsch-Gordan coefficients and irreducible operators sets. The resulting QSpace tensors can deal with any set of abelian symmetries together with arbitrary non-abelian symmetries with compact, i.e. finite-dimensional, semi-simple Lie algebras.
description: 25 pages (main text) + 32 pages (appendix - more detailed pedagogical introduction to the non-abelian framework); accepted by Annals of Physics and available online since Jul 2012, with final publication in the Dec 2012 issue
Regularization for optimal control problems associated to nonlinear evolution equations
Creators: name: Meinlschmidt, Hannes
name: Meyer, Christian
name: Rehberg, ##!Error: Attribute  Unknown!##
Publisher: name: Weierstrass Institute
Year: 2019
Subjects: subject: Optimal control
subject: regularization
subject: nonlinear evolution equations
subject: compactness
subject: function spaces
subject: 49K20
subject: 49J20
subject: 47J20
subject: 47J35
subject: 46E40

description: It is well-known that in the case of a sufficiently nonlinear general optimal control problem there is very frequently the  necessity for a compactness argument in order to pass to the limit in the state equation in the standard ``calculus of variations'' proof for the existence of optimal controls. For time-dependent state equations, i.e., evolution equations, this is in particular unfortunate due to the difficult  structure of compact sets in Bochner-type spaces. In this paper, we propose an abstract function space and a suitable  regularization- or Tychonov term for the objective functional which allows for the usual standard reasoning in the proof of existence of optimal controls and which admits a reasonably favorable structure in the characterization of optimal solutions  via first order necessary conditions in, generally, the form of a variational inequality of obstacle-type in time. We establish the  necessary properties of the function space and the Tychonov term and derive the aforementioned variational inequality.  The variational inequality can then be reformulated as a projection identity for the optimal control under additional  assumptions. We give sufficient conditions on when these are satisfied. The considerations are complemented with a series of  practical examples of possible constellations and choices in dependence on the varying control spaces required for the evolution equations at hand.
Listrochelus Blanchard 1851
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Listrochelus

description: Listrochelus Blanchard, 1851
[83 species and 1 additional subspecies].
Type species Listrochelus castelnaui Blanchard, 1851, by monotypy.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 130, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Design and technology of T/R modules for phased array radar applications
Creators: name: Schaeffner, R.
name: Eckert, G.
name: Nuetzel, T.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: Due to the given requirements and the large number of elements, Transmit / Receive (T/R) Modules form the key elements of modern active phased array antennas. General requirements for airborne and space-borne applications are low mass and high efficiency of the modules. Systems with synthetic aperture radar (SAR) need dual polarisation capability to increase the SAR system performance, additionally. The actual design of a T/R Module demonstrator for a future military earth observation satellite with a synthetic aperture radar will be presented. To meet the requirements for miniaturisation highly integrated components have to be used. The RF performance will be met by monolithic microwave integrated circuits (MMICs) in Gallium Arsenide (GaAs) technology. Different devices in various technologies will be presented, as well as their performance parameters. Besides the RF components, the digital control electronics have to be miniaturised as well. These circuits are realised in MCM-D technology, i.e. multi chip modules, using bare chips, on AI2O3 substrate in thinfilm technology. Modern assembly technologies like Flip Chip mounting will be applied. Two different T/R Module technology demonstrators, designed and developed by Daimler-Benz Aerospace, SI Sicherungstechnik will be presented
Technological trends for T/R modules
Creators: name: Mancuso, Y.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: The concept of advanced phased array antennas, based on the combination of a large number of active elements, is critically
dependant on the availability of compact and minimum weight, low consumption and high-reliability microwave T/R
modules. The main guideline for the design is to achieve the best trade-off between performance, reliability and
manufacturing cost.
THOMSON-CSF is leading phased array developments with T/R modules in S, C, X bands and also wideband for airborne,
space and ground-based radars. Examples will be given.
The technological trends will be discussed, as following:
Electrical architecture of the T/R module.
Performance in relation with the GaAs processes: MESFET, pHEMT or HBT.
Packaging in relation with the level of hermeticity :
. micro or macropackages,
. ceramic or printed circuit multilayer,
. silicon substrates,
. robotic manufacturing.
-	Tests duration and number reduction..
Some different possible designs of T/R module for the future will be discussed.
Learning the undecidable from networked systems
Creators: name: Abrahão, Felipe S.
name: Zenil, Hector
name: D'Ottaviano, Ítala M. L.
name: Wehmuth, Klaus
name: Dória, Francisco Antônio
name: Ziviani, Artur
Publisher: name: Zenodo
Year: 2019

description: This article presents a theoretical investigation of computation beyond the Turing barrier from emergent behavior in distributed (or parallel) systems. In particular, we present an algorithmic network that is an abstract mathematical model of a networked population of randomly generated computable systems with a fixed communication protocol. Then, in order to solve an undecidable, we study how nodes (i.e., Turing machines or computable systems) can harness the power of the metabiological selection and the power of information sharing (i.e., communication) through the network. Formally, we show that there is a pervasive network topological condition, in particular, the small-diameter phenomenon, that ensures that every node becomes capable of solving the halting problem for every program with a length upper bounded by a logarithmic order of the population size. In addition, we show that this result implies the existence of a central node capable of solving the halting problem in the minimum number of communication rounds. We also discuss the implications of such emergent phenomena on synergistic versus evolutionary paradigms in complex systems by showing that such algorithmic network can produce an arbitrarily large value of expected local algorithmic synergy.
Ka band GaAs MMIC chipset for satellite communication payloads
Creators: name: Comparini, M.C.
name: Feudale, M.
name: Ranieri, P.
name: Suriani, A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: The present paper describe a number of GaAs MMIC developed by Alenia Aerospazio for Ka Band satellite equipment application using a standard 0.25 PHEMT process. As did for Ku band applications these new MMIC can be used as building blocks for several new generation equipment. Low noise amplifiers and control functions have been implemented with good results showing the effectiveness of this technology for all future implementations.
Unlimited bandwidth TWT predistortion lineariser MMICs for Ku- and Ka-band Operation
Creators: name: Kangaslahti, P.
name: Kalajo, S.
name: Porra, V.
name: Jukkala, P.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: Novel types of predistortion MMICs for the linearisation of short and standard length travelling wave tubes were developed. We measured single setting optimum performance over a wider a bandwidth than any previously reported. The two designed chip sets operated correctly at the specified 10.7 to 12.7GHz and 18.5 to 20.2GHz bands, however, there is no limitation to the wider bandwidth operation of the circuits. By utilising a transmission line simulating network of series inductors and shunt Schottky-diodes we designed these MMICs on a commercially available 0.25um PHEMT process. The chip set includes separate AM/AM and AMIPM circuits for accurate and separate linearisation adjustment of the TWT.
S-band SSPA for multicarrier applications
Creators: name: Darbandi, A.
name: Rogeaux, E.
name: Zoyo, M.
name: Rivierre, B.
name: Lapierre, L.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: A light weight, low distortion SSPA at S-band for multicarrier signal operation has been developed. The SSPA uses the MMIC chips for the low level amplification section and hybrid PHEMT devices for the medium level and high power level sections. The SSPA  exhibits at class A operation an output power of 3W, a noise power ratio (NPR) higher than 14dB with an associated PAE of 23% over the frequency band 2.16 - 2.20GHz.
Resistive GaAs HEMT mixer designs for satellite payloads
Creators: name: Limiti, E.
name: Mastripieri, S.
name: Ranieri, P.
name: Suriani, A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: This paper focuses on design of resistive HEMT mixers suited for satellite repeaters where conversions from uplink to downlink frequencies, both higher than the LO frequency, is required with suppression of spurious mixing products and local oscillator harmonics which may fall inside or close to the transmit frequency range. Results are shown indicating clear advantages over conventional Schottky diode mixing.
GaAs, Advanced RF CMOS and Silicon Components for Miniaturised Space Digital Receiver
Creators: name: Arena, M.
name: Belperio, F.
name: Calderone, L.
name: Comparini, M.C.
name: Leone, C.
name: Simone, L.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: ING-INF/01 Elettronica

description: This paper presents the electrical and technological design for the new generation of Telemetry and Telecommand (TT&C) receivers for satellite application, in Ka Band. The congestion of the S-band are forcing towards higher frequency bands and towards a bandwidth optimization. The improvements in the system performance, and at the same time reducing cost, mass and power consumption are the goals to achieve with these new developments[1]. Performance repeatability, improved reliability figure, modular design, unit miniaturisation and reduced tuning effort in production are just few of the possible advantages introducing of latest technologies either in the RF/ microwave and in the digital domain.