cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Identifying and understanding the patterns and processes of forest cover change in Albania and Kosovo
Creators: name: Laze, Kuenda
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2013
Subjects: subject: Albanien
subject: Kosovo
subject: Postkommunismus
subject: Waldbestand
subject: Online-Publikation
subject: Hochschulschrift
subject: 333.7
subject: 630

description: Wälder sind eine wichtige Ressource für die Lebensbedingungen und die Wirtschaft in einer Region. Das Ausmaß der Waldbedeckung kann in hohem Maße von institutionellen und politischen Rahmenbedingungen beeinflusst werden, wie etwa dem Ende des Sozialismus in Osteuropa oder dem Kosovokrieg. In dieser Studie werden Determinanten für die Veränderung der Waldbedeckung in Albanien und dem Kosovo für zwei Zeiträume zwischen 1988 und 2007 untersucht. Zu den in dieser Arbeit verwendeten Methoden zählt die Geographically Weighted Regression (GWR), die zur Feststellung regionaler Muster und Prozesse in der Veränderung der Waldbedeckung genutzt wurde. Die Belastung auf den Wald durch existenzsichernde Holzgewinnung war im zweiten Untersuchungszeitraum, für den eine Entwaldung in größerer Entfernung von Straßen und Siedlungen zu beobachten war, geringer. Die Determinante Entfernung zu menschlicher Besiedelung zeigte im Zusammenhang mit der Veränderung der Waldbedeckung starke lokale Unterschiede auf. Besonders negativen Einfluss dieser Determinante auf die Waldbedeckung ließ sich vor allem in den nördlichen und nordöstlichen Gebieten Albaniens und den nördlichen und südlichen Regionen des Kosovo im zweiten Untersuchungszeitraum feststellen. Diese Studie leistet somit einen wichtigen Beitrag zur Literatur, insbesondere im Hinblick auf Ergebnisse zu Mustern und Prozessen der postsozialistischen Veränderungen der Waldbedeckung in den betrachteten Ländern.
description: Forests are important resources for local livelihoods and the economy. Forest cover can be significantly affected by changes in institutional and political framework conditions such as induced by the collapse of socialism in Eastern Europe and the war in Kosovo. This study analyzed the determinants of changes in forest cover for two periods between 1988 and 2007 for Albania and Kosovo. The method used in this thesis included Geographically Weighted Regression (GWR) that served to identify the local pattern and processes of forest cover change. Pressures on forest from subsistence extraction of wood decreased in the second period when deforestation was observed in larger distance from roads and populated areas. The determinant of distance to nearest human settlement showed high local variations in their relationships with forest cover change. A strong negative influence was particularly evident in the northern and northeastern regions in Albania and the northern and southern in Kosovo in the second period. This research contributed important country-evidence to the literature on the patterns and processes of the post-socialist forest cover change.
Are ”innocuous” Minimum Quality Standards
really innocuous?
Creators: name: Garella, Paolo G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-P/07 Economia aziendale

description: The present note shows that ”innocuous” Minimum Quality Standards, namely
standards that are below the lowest quality level observed in the market, may
have effects on equilibrium outcomes. In particular this is true in a duopoly
where one high quality firm invests in R&D to lower its cost of quality improvements.
A Standard that is below, but close to, the lowest quality observed in
the market reduces the incentive to invest by the quality leading firm.
Monotropus Erichson 1847
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Monotropus

description: Monotropus Erichson, 1847
[11 species].
Type species Rhizotrogus (Monotropus) nordmanni Blanchard, 1850, by subsequent monotypy.
Paramonotropus: Medvedev 1951. Unavailable name.
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 131, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
R&D for quality improvement and network externalities
Creators: name: Lambertini, Luca
name: Raimondello, Orsini
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-P/06 Economia applicata

description: We investigate the bearings of network externalities on product quality im-
provements requiring costly R&D investments. The model considers the
dynamic behaviour of a monopolist alternatively maximising profits or social
welfare. On the one hand, we confirm much of the acquired wisdom from the
static literature on the same topic, about the arising of quality undersupply
at the private optimum. On the other, we identify the initial conditions that
must be met for R&D activity to be observed under profit-seeking behaviour.
We also show that the presence of network externalities affects the optimal
behaviour of the profit-seeking firm but not that of a benevolent planner,
who serves all consumers and smooths the R&D costs leading to a steady
state quality which is independent of network concerns.
On contextually embedded choices
Creators: name: Lanzi, Diego
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-P/06 Economia applicata

description: Starting from Amartya Sen's works on rational behaviour, in this
essay a contextually-embedded choice theory is presented. Using concepts and tools
from poset mathematics, we show how to inject in rational choice theory cultural and
social effects. Specifically, we define some choice super-structures seen as choice sets'
transformations imposed by accepted external consistency of choice requirements. As
we will argue, these applications can be of some help in explaining preference changes
within different contexts fo choice. Hence, using the same analytical framework, some
well-known results about maximizing and optimizing behaviour may be confirmed as
well as some insights on intransitive choices phase out.
Unregulated drug vendors' knowledge, attitudes, beliefs and practices related to malaria management of children five and under in Butaleja District, Uganda
Creators: name: Liow, Eric Kang-Yan
Publisher: name: University of British Columbia
Year: 2014

description: Background: It has been estimated that there are 4000 licensed drug shops throughout Uganda with approximately 39% being unlicensed and unregulated with the latter being common in rural areas. Unregulated drug vendors play a major role in malaria management for young children (age five and under) since they are often the first points of access for caregivers seeking treatment for their sick children. As a result, their ability to manage malaria has a great influence on malaria outcomes in the rural community. Objective: The study assessed practices of unregulated drug vendors related to case management for children five and under. Knowledge, attitudes and beliefs in other areas of malaria management were also assessed to better understand their practices. Methods: This study employed a descriptive and qualitative design using a semi-structured interview. A district-wide census identified 88 unlicensed, unregulated drug vendors in which 75 participants were recruited into the study through a purposive sampling strategy. Results: The study found that a large proportion of drug vendors were unqualified to operate a drug shop. Several flaws in their practices were identified including vendors dispensing quinine instead of first-line ACT, irrational poly-pharmacy, dispensing oral quinine indiscriminately, providing under-dose treatment and selling ineffective antimalarials. Only 26.7% of vendors stocked ACTs while 90.7% stocked quinine (oral). Only 27.9% reported ACT as the best option to treat malaria, while others believed in less effective medicines. Some vendors also offered responses to questions that indicated incorrect beliefs related to cause, prevention, and effectiveness of different antimalarials. Although many were unqualified and demonstrated poor knowledge, beliefs and practices related to malaria management, many were interested in participating in future programs. About 89.0% expressed preference for short-term training sessions. Conclusion: Small proportion of drug vendors stocking ACTs suggests effective treatment of malaria at home may be compromised due to clients and children likely receiving less effective antimalarials for treatment. The findings also call for a program to deliver training to unregulated vendors to enhance treatment practices and also correcting misconceptions and flawed beliefs in other areas of malaria management.
Identifying reaction functions in differential oligopoly games
Creators: name: Lambertini, Luca
name: Mantovani, Andrea
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-S/06 Metodi matematici dell'economia e delle scienze attuariali e finanziarie

description: We investigate the issue of strategic substitutability/complementarity in differential
games. We prove that instantaneous best replies exist if Hamiltonian
functions are multiplicative in the control variables. Otherwise, if the Hamiltonians
are addively separable w.r.t. controls, a dominant strategy emerges
for each player. In this case, however, imposing stationarity on the differential
equations of states, one can still identify best replies at the steady state,
which is ruled out by definition in static games.
The SL2S Galaxy-scale Gravitational Lens Sample. I. The alignment of mass and light in massive early-type galaxies at z=0.2-0.9
Creators: name: Gavazzi, Raphael
name: Treu, Tommaso
name: Marshall, Philip J.
name: Brault, Florence
name: Ruff, Andrea
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the relative alignment of mass and light in a sample of 16 massive early-type galaxies at z=0.2-0.9 that act as strong gravitational lenses. The sample was identified from deep multi-band images obtained as part of the Canada France Hawaii Telescope Legacy Survey as part of the Strong Lensing Legacy Survey (SL2S). Higher resolution follow-up imaging is available for a subset of 10 systems. We construct gravitational lens models and infer total enclosed mass, elongation, and position angle of the mass distribution. By comparison with the observed distribution of light we infer that there is a substantial amount of external shear with mean value $= 0.12 \pm 0.05$, arising most likely from the environment of the SL2S lenses. In a companion paper, we combine these measurements with follow-up Keck spectroscopy to study the evolution of the stellar and dark matter content of early-type galaxies as a function of cosmic time.
R&D incentives under Bertrand competition: a differential game
Creators: name: Cellini, Roberto
name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-S/06 Metodi matematici dell'economia e delle scienze attuariali e finanziarie

description: We investigate dynamic R&D for process innovation in an oligopoly where
firms invest in cost-reducing activities. We focus on the relationship between
R&D intensity and market structure, proving that the industry R&D investment monotonically increases in the number of firms. This result contradicts
the established wisdom acquired from static games on the same topic. We
also prove that, if competition is sufficiently tough, any increase in product
substitutability reduces R&D efforts.
Reconstructing the History of Energy Condition Violation from Observational Data
Creators: name: Wu, Chao-Jian
name: Ma, Cong
name: Zhang, Tong-Jie
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the likelihood of energy condition violations in the history of the Universe. Our method is based on a set of functions that characterize energy condition violation. FLRW cosmological models are built around these "indication functions". By computing the Fisher matrix of model parameters using type Ia supernova and Hubble parameter data, we extract the principal modes of these functions' redshift evolution. These modes allow us to obtain general reconstructions of energy condition violation history independent of the dark energy model. We find that the data suggest a history of strong energy condition violation, but the null and dominant energy conditions are likely to be fulfilled. Implications for dark energy models are discussed.
description: v1: 6 pages, 7 figures, 1 table. Comments welcome; v2: 7 pages, expanded & corrected, accepted by ApJ
A positive analysis of immigration policy
Creators: name: Bellettini, Giorgio
name: Berti Ceroni, Carlotta
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-P/01 Economia politica

description: This paper studies the determinants of immigration policy in an economy with entrepreneurs
and workers where a trade union has monopoly power over wages. The presence of the union
leads a benevolent government to implement a high level of immigration and induces a welfare
loss not only from an aggregate point of view, but even from the point of view of workers. In
the politico-economic equilibrium where interest groups lobby for immigration, we show the
condition under which workers are no longer hurt by the presence of the union.
On the stability of the cosmological solutions in f(R,G) gravity
Creators: name: de la Cruz-Dombriz, Álvaro
name: Sáez-Gómez, Diego
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Modified gravity is one of the most promising candidates for explaining the current accelerating expansion of the Universe, and even its unification with the inflationary epoch. Nevertheless, the wide range of models capable to explain the phenomena of dark energy, imposes that current research focuses on a more precise study of the possible effects of modified gravity may have on both cosmological and local levels. In this paper, we focus on the analysis of a type of modified gravity, the so-called f(R,G) gravity and we perform a deep analysis on the stability of important cosmological solutions. This not only can help to constrain the form of the gravitational action, but also facilitate a better understanding of the behavior of the perturbations in this class of higher order theories of gravity, which will lead to a more precise analysis of the full spectrum of cosmological perturbations in future.
description: 30 pages, 15 figures. Figures and conclusions improved, references added. Version to be published in Classical and Quantum Gravity
Altersabhängige retrospektive Betrachtung von klinischen Verläufen der infektiösen Endokarditis
Creators: name: Pescheck, Tarik Klaus Erich
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2007
Subjects: subject: Elektronische Publikation
subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in engl. Sprache
subject: 616.1

description: Hintergrund: Altersabhängige Aspekte der infektiösen Endokarditis sind in der aktuellen Literatur wenig berücksichtigt. Man muss aber davon ausgehen, dass das Alter einen Einfluss auf den Verlauf dieser Erkrankung hat. Methode: Es erfolgt die retrospektive Analyse von 107, anhand der DUKE-Kriterien gesicherten, Fällen der infektiösen Endokarditis am Universitätsklinikum Halle-Kröllwitz aus den Jahren 1990 bis 2000. Diese Fälle bilden die Grundlage für ein neues Endokarditis-Register. Resultate: Das durchschnittliche Erkrankungsalter lag bei 56,7 ± 13 Jahren. Der Anteil an Männern nahm von 65% in der Gruppe der unter 50-jährigen auf 53% in der Gruppe der über 69-jährigen ab. Die Symptome waren altersunabhängig. Die diagnostische Latenz wurde mit zunehmendem Alter länger. Echokardiographie und Blutkultur waren die Kernelemente in der Diagnostik. Im Gegensatz zu jüngeren mit 24% wurden ältere Patienten mit 63% häufiger konservativ als operativ behandelt. Die Hospitalisierung war bei operativer im Gegensatz zu konservativer Versorgung deutlich länger. Die Letalität ist von Therapieform und Alter weitgehend unabhängig. Schlussfolgerung: Bei eindeutiger Indikationsstellung ist die operative Versorgung mit zunehmendem Alter eine zuverlässige Therapieoption.
description: Introduction: Age-related aspects of infective endocarditis are rarely mentioned in modern literature. We hypothezise that the age of patients has an influence on the outcome of infective endocarditis. Methods: A retrospective analysis of 107 cases of infective endocarditis, all treated at the Universitätsklinikum Halle-Kröllwitz from year 1990 until 2000. A new endocarditis register will be based on these cases. Results: The average age of the patients was 56.7 ± 13 years. The percentage of males decreased from 65% in the group younger than 50 years to 53% in the group older than 69 years. The symptoms were independent of age. The diagnostic latency increased with age. The most important diagnostic procedures were echokardiographie and blood culture. In Compared to younger patientes (24%) older patientes (63%) were more often conservatively treated. The time of hospitalisation statistcally longer after surgical treatment compared to conservative treatment. Lethality is by far independent of the choice of treatment Conclusion: With clear indications, surgery is a reliable method with increasing age.
Renormalization of the QED of self-interacting second order spin 1/2 fermions
Creators: name: Vaquera-Araujo, Carlos A.
name: Napsuciale, Mauro
name: Angeles-Martinez, Rene
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the one-loop level renormalization of the electrodynamics of spin 1/2 fermions in the Poincaré projector formalism, in arbitrary covariant gauge and including fermion self-interactions, which are dimension four operators in this framework. We show that the model is renormalizable for arbitrary values of the tree level gyromagnetic factor g within the validity region of the perturbative expansion, αg^2 << 1. In the absence of tree level fermion self-interactions, we recover the pure QED of second order fermions, which is renormalizable only for |g|=2. Turning off the electromagnetic interaction we obtain a renormalizable Nambu-Jona-Lasinio-like model with second order fermions in four space-time dimensions.
description: 32 pages, 9 figures. Published version
Comparison of linearly and nonlinearly statistically downscaled atmospheric variables in terms of future climate indices and daily variability
Creators: name: Gaitan Ospina, Carlos Felipe
Publisher: name: University of British Columbia
Year: 2013

description: Statistical downscaling (SD) of global climate model output assumes that the SD skills in present climate are retained in future climate (i.e. time-invariant). To check this assumption, I used regional climate model output as pseudo-observations to verify the downscaled models’ performance in terms of both daily variability and climate indices for historical (1971-2000) and future (2041-2070) periods. The variables of interest are daily maximum and minimum temperatures, daily precipitation occurrences and amounts, and surface wind speed. In particular, a variety of nonlinear statistical/machine learning models (e.g. Bayesian neural network (BNN), adaptive regression sufficiently smooth polynomials, and classification and regression trees (CART)) and multiple linear regression models were used to downscale the Canadian Global Climate Model 3.1 output using the Canadian Regional Climate Model 4.2 output as pseudo-observations. The regions of interest are southern Ontario and Quebec, Canada, for temperature and precipitation, and Haida Guaii, British Columbia, Canada, for surface wind speed. The results indicate that choosing the best model based on the historical period performance could result in having one of the worst models for the future period. In particular, when downscaling temperatures, using SD models with greater ability to model complicated relations, by having either nonlinear capability or additional non-temperature predictors, seemed to alleviate the drop in performance found in future climate conditions. When downscaling precipitation occurrences, nonlinear methods outperformed their linear counterparts in terms of the Peirce skill score and the skill did not diminish for future climate. On the other hand, when downscaling precipitation amounts, the model performances deteriorated in future climate, and a BNN model had the best future performance in terms of daily variability, even though the model’s performance varied widely among individual climate indices. Finally, the Wind INDices for the evaluation of EXtremes (WINDEX) were introduced, and it was shown that a BNN model and a probabilistic model were the best in simulating pseudo-observed surface wind speed daily variability and the WINDEX climate indices, respectively.
Innovation Waves, Self-organised Criticality and Technological Convergence.
Creators: name: Andergassen, Rainer
name: Nardini, Franco
name: Ricottilli, Massimo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/01 Economia politica

description: The purpose of this paper is to investigate the evolutionary process of imitation and innovation as a process of searching in a given neighbourhood of firms. Networks are the main source of information for firms willing to actively search and upgrade and which define the reachable neighbourhood whose width is strictly related to cognitive distance. We have identified two major forms of information setting off innovative behaviour: the first comes in the shape of random events which are exogenous, at least in terms of the firms’ own search activity, while the second is determined by searching for technological opportunities in other economic sectors. It is this activity that generates the spreading of a new technological paradigm and that makes for technological convergence. All firms are a heterogeneous set of agents bounded by their competence, technological specificity and, more generally, rationality. The spreading of information through cognitive neighbourhoods allows firms to gradually acquire full knowledge leading to innovation waves. Imitation follows innovation as firms attempt to glean information on best practise techniques to join their sector technological leaders. Whilst innovators are temporarily allowed to reap quasi rents the imitative band wagon effect drives the profit rate down to its normal level. Productivity growth lowers the prices of sectors involved in the process of technological advance causing obsolescence and, thus, creative destruction in a Schumpeterian sense.
The phase diagram of a gauge theory with fermionic baryons
Creators: name: Maas, Axel
name: von Smekal, Lorenz
name: Wellegehausen, Björn
name: Wipf, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The fermion-sign problem at finite density is a persisting challenge for Monte-Carlo simulations. Theories that do not have a sign problem can provide valuable guidance and insight for physically more relevant ones that do. Replacing the gauge group SU(3) of QCD by the exceptional group G2, for example, leads to such a theory. It has mesons as well as bosonic and fermionic baryons, and shares many features with QCD. This makes the G2 gauge theory ideally suited to study general properties of dense, strongly-interacting matter, including baryonic and nuclear Fermi pressure effects. Here we present the first-ever results from lattice simulations of G2 QCD with dynamical fermions, providing a first explorative look at the phase diagram of this QCD-like theory at finite temperature and baryon chemical potential.
description: 5 pages, 5 figures, v2: extended discussion of vacuum physics and chiral symmetry added, some other minor improvements
Phosphorylation of the E3 ubiquitin ligase PUB22 controls its ubiquitination activity to dampen the immune response
Creators: name: Furlan, Giulia
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2017
Subjects: subject: 572

description: In der Immunantwort von Arabidopsis agiert die “U-box type” E3 Ligase PUB22 als negativer Regulator. Sie greift Komponenten der vesikulären Transportwege an. Wenig ist über die kontrollierenden molekularen Mechanismen bekannt. PUB22 wird durch Ubiquitinierung reguliert, welche ihren kontinuierlichen Abbau festlegt, jedoch, als Folge der Aktivierung der Immunantwort, durch MPK3 gesteuert Phosphorylierung stabilisiert. Mimikry dieses Vorgangs resultiert in erhöhter Stabilität von PUB22 in vivo. Dieser Effekt korreliert mit reduzierter Autoubiquitinierungsaktivität in vitro. Autoubiquitinierung ist abhängig von der Oligomerisation von PUB22, welche durch Phosphorylierung inhibiert wird. Ich schlage ein Model vor, in dem durch MPK3 gesteuerte Phosphorylierung die Oligomerisation von PUB22 verhindert wird. Dies bewahrt PUB22 vor Abbau und ermöglicht so die Interaktion mit Zielproteinen, die zur Dämpfung der Immunantwort beitragen. Die Bedeutung der Phosphorylierung von PUB22 wurde durch Komplementierungsversuche untersucht. Nur Phosphomimikry, nicht aber Phosphonullmutanten waren in der Lage, die Immunantwort zu dämpfen.
description: During the immune response, the Arabidopsis U-box-type E3 ligase PUB22 was shown to negatively regulate immune signalling by targeting components of the vesicular trafficking. However, little is known about the molecular mechanisms controlling its activity. Here, I show that PUB22 is regulated via ubiquitination, which determines its continuous degradation. However, upon activation of the immune response PUB22 is stabilized by MPK3-mediated phosphorylation. Mimicking phosphorylation resulted in increased stability of PUB22 in vivo, correlating with a reduced autoubiquitination activity in vitro. Autoubiquitination is dependent on the oligomerization of PUB22, which is inhibited by phosphorylation. I propose a model in which MPK3-mediated phosphorylation of PUB22 determines an activity switch by disrupting oligomerization, rescuing PUB22 from degradation and allowing it to engage targets to dampen cellular signalling during immunity. The importance of PUB22 phosphorylation is shown by complementation analysis, demonstrating that phosphomimetic mutants, however not phosphonull mutants, efficiently dampen the immune response.
Nematophylla Arrow 1906
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Nematophylla

description: Nematophylla Arrow, 1906a
[2 species].
Type species Nematophylla rugosa Arrow, 1906, 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 131, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Deckung osteochondraler Gelenkflächendefekte durch gefäßgestielte Periostlappen - eine experimentelle Studie am Kaninchenkniegelenk
Creators: name: Berginski, Markus
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2002
Subjects: Elektronische Publikation
Hochschulschrift
Zsfassung in engl. Sprache

description: Die Therapie osteochondraler Gelenkflächendefekte stellt bis heute ein ungelöstes Problem dar, da die angewandten Behandlungsmaßnahmen unbefriedigende Langzeitergebnisse hervorbringen. Die eigene tierexperimentelle Untersuchung soll feststellen, ob gefäßgestielte Periostlappen adulter Kaninchen in der Lage sind, sich in hyalinähnlichen Knorpel zu differenzieren. An neunzehn Tieren wird ein osteochondraler Defekt im femoropatellaren Gleitlager des rechten Kniegelenkes gesetzt, welcher mit gefäßgestielten bzw. freien Periostlappen vom medialen Femur versorgt wird. Die kontralaterale Gelenkfläche dient als Kontrolle. Die Tiere werden für sechs Monate unter Spontanbewegung gehalten. Nach Opferung werden die distalen Femuranteile beidseits entnommen und eine makroskopische, histologische und biochemische Analyse durchgeführt. Bei den durch gefäßgestielte Transplantate versorgten Defekten zeigen sich deutlich weniger degenerative Veränderungen als bei den freien Transplantaten, insgesamt zeigt sich jedoch die biologische Minderwertigkeit des Neoknorpels beider Gruppen gegenüber dem Gelenkknorpel. Die Methode der mikrovaskulär reanastomosierten Periostlappen erweist sich in diesem Versuch gegenüber den freien Transplantaten als überlegen, obwohl sich in keiner Gruppe originärer Gelenkknorpel bildet.
description: The therapy of large osteochondral defects in joints is an unsolved problem in modern surgery because the treatment modalities do not offer a long term repair. In our investigation we want to find out if vascularized periosteal flaps of adult rabbits generate hyaline articular cartilage. In nineteen rabbits a large osteochondral defect is surgically created in one distal femur which is provided either with vascularized or free periosteal flap. One knee joint of each rabbit serves for control purposes. The animals were observed for six months at normal cage activity. The rabbit knees were analyzed by gross examination, histological staining and biochemical analyses. The defects that were provided with vascularised grafts show less degenerative alteration than those provided with free grafts and the repair tissue is very similar to hyaline cartilage. The method of vascularized periosteal flaps is in our investigation superior to the free graft method although no original articular cartilage was found.
A Simple Approach to CAPM, Option Pricing and Asset Valuation
Creators: name: Cesari, Riccardo
name: D'Adda, Carlo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/01 Economia politica

description: In this paper we propose a simple, intuitive approach to asset valuation in terms of marginal contributions to the characteristics (moments) of the market portfolio. Considering only the first two moments, mean and variance, the valuation equation is shown to correspond to Sharpe’s CAPM. A risk-neutral pricing formula is easily derived, showing the equivalence between CAPM and the Black and Scholes’ model. Extensions to higher moments like skewness and kurtosis are straightforward, providing a generalized valuation equation. Finally, the generalized equation is derived in a different, more rigorous way, as a result of a classical intertemporal general equilibrium model.
Migration, fiscal competition and brain drain
Creators: name: Giannoccolo, Pierpaolo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/06 Economia applicata

description: In this paper I present a simple model in which I analyse the impact of labor mobility on redistributive policies and the provision of education as a publicly provided good. I’ve analysed different extensions of the model (Maximin objective function of the government and utilitarian function, symmetric and asymmetric population, one generation and two generation model) for check the results in different specifications of the world. The results obtained are in agreement to the literature: less redistribution and less provision of public good with respect to the efficient value (which could be obtained in the absence of mobility or in the presence of coordination among jurisdictions) The aim of this work is to underline this particular aspect of the fiscal competition: when we add up the two negative effects due to the absence of coordination among jurisdictions, the loss of efficiency is more accentuate. This result is important in the European contest because we have an increase of labor mobility. For this reason the possibility of brain drain added to fiscal competition and to an increase of the mobility can be more dangerous for the European jurisdictions and a coordination is necessary in the education policies and in the redistribution policies within the European Union.
Durchflusszytometrische Charakterisierung des Phänotyps tumorinfiltrierender Lymphozyten beim Nierenzellkarzinom
Creators: name: Geißler, Katharina
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2012
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 611

description: In dieser Arbeit wurden die phänotypischen Eigenschaften tumorinfiltrierender Lymphozyten von Patienten mit tumorösen Nierenerkrankungen untersucht. Die gesamte Untersuchungsgruppe umfasste 119 Patienten (davon 92 hellzellige Nierenzellkarzinome). Nach Gewinnung und Aufbereitung der frischen Tumorresektate sowie der Blutproben erfolgten die Immunfluoreszenzfärbungen mit einer Kombination verschiedener monoklonaler Antikörper und die anschließende Analyse der markierten Zellen mittels 4-Farbmessung am Durchflusszytometer. Die Resultate wurden mit uni- und multivariaten Analysemodellen statistisch ausgewertet. Für Nierenzellkarzinompatienten mit hohen Anteilen an CXCR3+ T-Zellen und HLA-DR+ T-Zellen im Tumor war eine höhere Überlebenswahrscheinlichkeit nachweisbar. Zugleich war ein hoher intratumoraler Anteil an Natürlichen-Killer (NK)-Zellen mit einem geringeren Sterberisiko verbunden. Die vorliegende Arbeit bietet Hinweise dafür, dass die Ermittlung der tumoralen Anteile einiger Lymphozytensubpopulationen wie NK-Zellen, CXCR3+ und HLA-DR+ T-Zellen bei der Prognoseabschätzung erkrankter Patienten vorteilhaft ist.
description: We identified the phenotypic subtypes of tumor infiltrating lymphocytes from patients with kidney tumors. The complete examination group contained 119 patients (92 cases of clear cell carcinoma). After preparing leukocytes out of the fresh tumor tissues, we employed immune fluorescence stainings with a combination of different monoclonal antibodies followed by 4-color flow cytometry. All results were evaluated statistically by univariate and multivariate analysis models. For the histology “clear cell carcinoma“ and high intratumoral percentages of CXCR3+ T cells or HLA-DR+ T cells, a higher probability of surviving was found. Furthermore, high intratumoral amounts of NK cells were connected with a lower mortality risk in clear cell carcinoma. Our data give hints that lymphocytic marker molecules reflect the special conditions of tumor microenvironment. Investigating the properties of intratumoral lymphocytic subpopulations can be helpful for the valuation of patient’s prognosis.
The survival of family firms: the importance of control and family ties
Creators: name: Lotti, Francesca
name: Santarelli, Enrico
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/07 Economia aziendale

description: The aim of this paper is to analyze the survival patterns of a group of family firms which have already spent at least twenty-five years in the market. To this end, we use the Kaplan-Meier product limit estimator supplemented with qualitative information gathered by direct observation and discussions with entrepreneurs. The main findings of the paper are that small family firms which have reached their thirtieth year in the market face a very high risk of sudden exit, increasing with firm age. Further control carried out by means of interviews with entrepreneurs identifies problems connected with succession as one of the main causes of the decision to close down.
Does globalization reduce poverty? Some empirical evidence for the developing countries
Creators: name: Santarelli, Enrico
name: Figini, Paolo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/01 Economia politica

description: In this paper we address a key issue in the current debate on economic development: the effect of globalization on poverty. We review the empirical evidence on the relationship between globalization (broadly defined) and within-country poverty in the Developing Countries (DCs). To measure globalization we use, among others, standard indices of trade openness, financial openness and privatization. To measure poverty we use both indices of relative and absolute poverty averaged over five and ten years. The use of relative poverty indices enables inquiry into a different dimension of poverty and provides additional information with respect to previous research. Both descriptive statistics and econometric analysis are used to sketch a few stylized facts in a very complex framework of relationships.
title: Residential flood loss estimated from Bayesian multilevel models
Creators: name: Mohor, Guilherme S.
name: Thieken, Annegret H.
name: Korup, Oliver
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 550 Geowissenschaften
subject: 910 Geografie, Reisen

description: Models for the predictions of monetary losses from floods mainly blend data deemed to represent a single flood type and region. Moreover, these approaches largely ignore indicators of preparedness and how predictors may vary between regions and events, challenging the transferability of flood loss models. We use a flood loss database of 1812 German flood-affected households to explore how Bayesian multilevel models can estimate normalised flood damage stratified by event, region, or flood process type. Multilevel models acknowledge natural groups in the data and allow each group to learn from others. We obtain posterior estimates that differ between flood types, with credibly varying influences of water depth, contamination, duration, implementation of property-level precautionary measures, insurance, and previous flood experience; these influences overlap across most events or regions, however. We infer that the underlying damaging processes of distinct flood types deserve further attention. Each reported flood loss and affected region involved mixed flood types, likely explaining the uncertainty in the coefficients. Our results emphasise the need to consider flood types as an important step towards applying flood loss models elsewhere. We argue that failing to do so may unduly generalise the model and systematically bias loss estimations from empirical data.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1148
Incentives of stock option based compensation
Creators: name: Agliardi, Elettra
name: Andergassen, Rainer
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/01 Economia politica

description: We introduce explicitly the effort as a choice variable in a continuous time utility maximisation framework of an executive who is partly compensated with stock options. We solve the model in the case where the executive is not allowed to trade in the company’s stock but is able to achieve a partial insurance through trading in a correlated market portfolio. We define the executive’s value of the options through a certainty equivalence approach both in the case of European call options and non-standard capped stock options and study the behaviour of the reservation price as relevant parameters change.
Rainbow Graphs and Switching Classes
Creators: name: Oh, Suho
name: Yoo, Hwanchul
name: Yun, Taedong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A rainbow graph is a graph that admits a vertex-coloring such that every color appears exactly once in the neighborhood of each vertex. We investigate some properties of rainbow graphs. In particular, we show that there is a bijection between the isomorphism classes of n-rainbow graphs on 2n vertices and the switching classes of graphs on n vertices.
description: Added more reference, fixed some typos (revision for journal submission)
Public vs. private health care services demand in Italy
Creators: name: Fabbri, Daniele
name: Monfardini, Chiara
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/06 Economia applicata

description: In this paper we use data coming from the new Italian Survey on Health Ageing and Wealth (SHAW) to analyse physician services utilization in Italy explicitly acknowledging the existence of two different classes of providers: public and private. We consider visits by a specialist physician as the measure of individual services utilization. In particular we assess the relative importance of variables like income, education, private insurance and supply characteristics as determinants of the utilization of such services, while controlling for individual health and need. We do that by estimating some alternative count data regression models of which we discuss the relative advantages and disadvantages and the entailed different interpretation of the results.
Simple parametrization of neutrino mixing matrix
Creators: name: Ma, Bo-Qiang
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose simple forms of neutrino mixing matrix in analogy with the Wolfenstein parametrization of quark mixing matrix, by adopting the smallest mixing angle $θ_{13}$ as a measure of expansion parameters with the tribimaximal pattern as the base matrix. The triminimal parametrization technique is utilized to expand the mixing matrix under two schemes, i.e., the standard Chau-Keung (CK) scheme and the original Kobayashi-Maskawa (KM) scheme. The new parametrizations have their corresponding Wolfenstein-like parametrizations of quark mixing matrix, and therefore they share the same intriguing features of the Wolfenstein parametrization. The newly introduced expansion parameters for neutrinos are connected to the Wolfenstein parameters for quarks via the quark-lepton complementarity.
description: 5 pages. Version for publication in PRD
Dynamic Advertising under Vertical Product Differentiation
Creators: name: Colombo, Luca
name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/07 Economia aziendale

description: We investigate a dynamic advertising model where product quality is en-dogenous. In the differential game between single-product firms, there exists a parameter range where the low-quality firm uses a more efficient advertising technology and earns higher profits than the rival. Moreover, we show that equilibrium qualities are the same under duopoly, multiproduct monopoly and social planning, the only distortion being concerned with output levels.
Immobilization of functionalized glycosaminoglycans to regulate protein adsorption and cell behavior - [kumulative Dissertation]
Creators: name: Köwitsch, Alexander
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2016
Subjects: subject: 615

description: Glykosaminoglykane (GAG) sind vielversprechende Biopolymere für die Bildung von beständigen Oberflächenbeschichtungen in der Biomaterialentwicklung. Daher wurden GAG mit unterschiedlichem Sulfatierungsgrad mittels Oxidation oder Thiolierung chemisch aktiviert und anschließend durch kovalente Reaktionen auf verschiedenen Materialien immobilisiert. Die Eigenschaften der beschichteten Oberflächen wiesen charakteristische Unterschiede in ihrer Oberflächenbeschaffenheit, der Beschichtungsdicke, ihrer Benetzbarkeit und des Zetapotentials auf. Untersuchungen zur Proteinadsorption mit Fibronektin und das Adhäsionsverhalten von humanen Fibroblasten zeigten eine direkte Abhängigkeit vom Sulfatierungsgrad der immobilisierten GAG. Somit stellen die oxidierten und thiolierten GAG vielversprechende Komponenten für die Bildung von bioaktiven Materialbeschichtungen dar und können als Bestandteil von 3D-Strukturen wie Nanopartikeln als Anwendungen des Tissue Engineerings genutzt werden.
description: Glycosaminoglycans (GAG) are promising biopolymers for the formation of stable surface coatings in the development of biomaterials. Therefore, GAG with different degree of sulfation were chemically activated by oxidation or thiolation and subsequently immobilized on different materials by covalent reactions. The properties of the coated surfaces exhibited characteristic differences in their surface texture, coating thickness, wettability and zeta potential. Studies on protein adsorption with fibronectin and the adhesion behavior of human fibroblasts showed a direct dependence on the degree of sulfation of the immobilized GAG. Thus, the oxidized and thiolated GAG are promising components for the formation of bioactive material coatings and can be used as components of 3D structures like nanoparticles for tissue engineering applications.
Nigrotrichia Matsumoto 2016
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Nigrotrichia

description: Nigrotrichia Matsumoto,2016
[15species and2 additional subspecies].
Type species Holotrichia kiotonensis Brenske, 1894, 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 131, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437