cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Retrospektive Untersuchung nach plastischem Defektverschluss mit dem radialen Unterarmlappen bei Patienten mit bösartigen Tumoren der Mundhöhle
Creators: name: Gehlhar, Anja
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2007
Subjects: subject: Elektronische Publikation
subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in engl. Sprache
subject: 616.994

description: 1981 wurde erstmalig der radiale Unterarmlappen als freies, mikrovaskulär anastomosiertes Transplantat beschrieben. In dieser Arbeit wurden die Folgezustände der Transplantation analysiert. Zusätzlich wurde überprüft, ob der radiale Unterarmlappen eine großzügigere Tumorresektion ermöglicht und somit eine höhere Quote von R0-Resektionen und 5-Jahres-Überlebens-wahrscheinlichkeit erreicht werden kann. Analysiert wurden 108 Patientenakten und 50 Fragebögen. 43 Patienten wurden nachuntersucht. Gemessen wurden die Unterarmkraft, die Sensibilität und Hautfeuchtigkeit in der Empfänger- und Spenderregion sowie das Schmeckvermögen. Die Transplantatentnahme führt zu einer Schwächung der Unterarmkraft. Der Sensibilitätsverlust wird kaum als belastend empfunden und ist in der Spenderregion weniger stark ausgeprägt als in der Empfängerregion. Die Feuchtigkeit der Empfängerregion ist gegenüber der übrigen Mundhöhle verringert, jedoch deutlich höher als im Unterarmbereich. Das Schmeckvermögen ist bei allen Patienten eingeschränkt. Die postoperativen Beeinträchtigungen sind wesentlich ausgeprägter bei zusätzlich durchgeführter Strahlen- bzw. Chemotherapie. Durch Verwendung des radialen Unterarmlappens ist eine großzügigere Tumorresektion möglich. Es konnte somit eine höhere Quote von R0-Resektionen erreicht werden. Diese scheint zu einer leichten Steigerung der 5-Jahres-Überlebenswahrscheinlichkeit zu führen.
description: In 1981 the radial forearm flap was firstly described as a free flap. The aftereffects of the transplantation were analyzed in this study. Additionally it was analyzed if the radial forearm flap allows a more extensive resection of the tumor resulting in a higher rate of R0-Resections  and a higher five-year survival rate. 108 records of patients and 50 questionnaires were evaluated.  43 patients were examined postoperatively. The strength of the forearm, sensation and hydration in the recipient and donor site as well as the sense of taste were measured. The removal of the transplant leads to a decrease in the strength of the forearm. A decrease in sensation does hardly cause patients discomfort and is less severe in the donor site than it is in the recipient site.   There is a reduction in hydration in the recipient site compared to other oral sites but hydration is greater than in the forearm. The taste was impaired in all patients. Overall postoperative impairment is much stronger developed in cases with additional radiation- and chemotherapy. The use of the radial forearm flap allows a more extensive resection of the tumor. Therefore a higher rate of R0-Resections was accomplished. This seems to lead to a slight increase in the five-year survival rate.
Computing Lempel-Ziv Factorization Online
Creators: name: Starikovskaya, Tatiana
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: We present an algorithm which computes the Lempel-Ziv factorization of a word $W$ of length $n$ on an alphabet $Σ$ of size $σ$ online in the following sense: it reads $W$ starting from the left, and, after reading each $r = O(\log_σ n)$ characters of $W$, updates the Lempel-Ziv factorization. The algorithm requires $O(n \log σ)$ bits of space and O(n \log^2 n) time. The basis of the algorithm is a sparse suffix tree combined with wavelet trees.
Clustering and percolation of point processes
Creators: name: Blaszczyszyn, Bartlomiej
name: Yogeshwaran, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We are interested in phase transitions in certain percolation models on point processes and their dependence on clustering properties of the point processes. We show that point processes with smaller void probabilities and factorial moment measures than the stationary Poisson point process exhibit non-trivial phase transition in the percolation of some coverage models based on level-sets of additive functionals of the point process. Examples of such point processes are determinantal point processes, some perturbed lattices, and more generally, negatively associated point processes. Examples of such coverage models are $k$-coverage in the Boolean model (coverage by at least $k$ grains) and SINR-coverage (coverage if the signal-to-interference-and-noise ratio is large). In particular, we answer in affirmative the hypothesis of existence of phase transition in the percolation of $k$-faces in the Čech simplicial complex (called also clique percolation) on point processes which cluster less than the Poisson process. We also construct a Cox point process, which is "more clustered" than the Poisson point process and whose Boolean model percolates for arbitrarily small radius. This shows that clustering (at least, as detected by our specific tools) does not always "worsen" percolation, as well as that upper-bounding this clustering by a Poisson process is a consequential assumption for the phase transition to hold.
description: 25 pages, 1 figure. This paper complements arXiv:1111.6017. arXiv admin note: substantial text overlap with arXiv:1105.4293
Supplementary insurance with Ex-Post moral hazard: efficiency and redistribution
Creators: name: Barigozzi, Francesca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-P/06 Economia applicata

description: This paper investigates the topping-up scheme in health insurance
when both public and private firms use linear contracts. First, the case
with identical consumers is analyzed. The optimal public coverage is
derived both when the firms play simultaneously and when they play sequentially.
In the former case consumers are over-insured, whereas, in the
latter case, the second-best allocation is obtained. Then, consumers’ heterogeneity
is introduced: consumers differ in their wage rate and labour
supply is endogenous. It is assumed that public coverage is uniform and
health expenditures are financed by linear taxation. Results show that,
in the sequential game, the optimal public coverage is negative and consumers
are under-insured.
Time consistent fiscal policies in a
Ramsey economy
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: This paper revisits a well-known case of optimal fiscal policy in a Ramsey
model where consumer utility is defined over consumption and public goods.
We show that normalising the size of the population to one eliminates the
scope for active policy-making since the decentralised equilibrium coincides
with social planning. Then, we modify the model to allow for a population
of N > 1 agents, whereby restoring the role of the government as a policymaker.
Both in the Stackelberg case and in the decentralised game, we prove
that optimal fiscal policy and consumption are not only time consistent but
also subgame perfect.
Women's employment, children and transition:
an empirical analysis on Poland
Creators: name: Bardasi, Elena
name: Monfardini, Chiara
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-S/04 Demografia
SECS-P/01 Economia politica

description: The effect of transition from centrally planned to market economies on female employment is
unclear a-priori. Many studies have pointed out that the emergence of labour markets created
obstacles to but also new opportunities for women’s employment. A frequently mentioned
potential explanation of the lower female participation during the transition period is
represented by the reduction of childcare facilities, which created a major constraint on the
participation of women with dependent children. However, we must not forget the effect of
forces of opposite sign, first of all the household necessity of having two earners during the
turbulent transition period. The aim of this paper is to give an empirical assessment on how
the transition to a market economy affected the relationship between motherhood and labour
force outcomes in Poland. We estimate random effects probit models on two PACO panel
datasets covering a four year period before the reform (1987-1990) and a three year period
afterwards (1994-1996). Our findings indicate that during transition small children were much
less of a deterrent to the employment probability of their mother than it was before transition.
Comparative advertising and competition policy
Creators: name: Barigozzi, Francesca
name: Peitz, Martin
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-P/08 Economia e gestione delle imprese

description: Only recently, competition authorities tend to agree on comparative advertising
being helpful in promoting competition. They now encourage firms to use it. They
reason that comparative advertising, if fair and not misleading, increases
consumers’ information about alternative brands. For this to work, comparative
claims must be credible. Competition policy and legal practice are essential in
making comparative advertising (directly and indirectly) informative.
In this paper, first we provide a legal background of comparative
advertising in in Europe and the US. Second, we provide an economic analysis of
comparative advertising. Here, we discuss the ways comparative advertising can
affect market outcomes. Third, we provide an analysis of some recent legal cases
in Europe and the US. Overall, we focus on the scope of information transmission
through comparative advertising and on the way antitrust laws affect it.
The emergence of paradigm setters through firms’ interaction and network formation
Creators: name: Andergassen, Rainer
name: Nardini, Franco
name: Ricottilli, Massimo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: SECS-P/07 Economia aziendale

description: Technological innovation requires the gathering of information through a
process of searching and learning. We distinguish two different but definitely complementary
and overlapping ways through which searching and learning occur. The first exploits the
spillover potential that lies in a firm’s network and thanks to which gathering innovationuseful
information is actually possible. The second is the autonomous capacity that a firm
possesses in order to carry out in-house innovative search. We build a model where rationally
bounded firms try to increase their innovative capability through endogenous networking.
The paper characterizes the emergence of technological paradigm setters in terms of network
properties as they result from searching routines, furthermore the corresponding average
efficiency of the system in terms of innovative capability is assessed.
Malnutritions-Inflammations-Arteriosklerose-Syndrom (MIA-Syndrom) bei Hämodialysepatienten - Zusammenhang zwischen Malnutrition, Inflammation und Mortalität sowie Untersuchung zur Wertigkeit biochemischer Marker
Creators: name: Rösch, Michael Alexander
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2008
Subjects: subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in engl. Sprache
subject: 616.6

description: Das MIA-Syndrom bei Dialysepatienten beschreibt den Zusammenhang zwischen Malnutrition, Inflammation und Arteriosklerose. Der vorliegenden Arbeit liegt eine klinische Studie zu Grunde, die sich mit den Einflussfaktoren auf das MIA-Syndrom beschäftigt. Als Teilaspekt wird in dieser Arbeit der Zusammenhang zwischen Malnutrition, Inflammation und Mortalität der Hämodialysepatienten im ersten Studienjahr untersucht. Darüber hinaus wurde die klinische Vorhersagekraft von Zytokinen beobachtet. Das Patientenkollektiv umfasste 123 Patienten aus 4 Dialysezentren in den neuen Bundesländern, die in 73 Normalernährte und 50 Mangelernährte eingeteilt wurden. Mangelernährte Patienten hatten innerhalb eines Jahres eine erhöhte Mortalität. Zudem hatten diese Patienten im Vergleich zur normalernährten Gruppe ein höheres Inflammationsniveau. Das pro-inflammatorische IL-6 war als einziges von elf untersuchten Zytokinen mit Malnutrition und erhöhter Mortalität assoziiert. Weiterhin mit erhöhter Mortalität assoziiert waren erniedrigte Konzentrationen des Zytokin Rantes. Adiponektin zeigte keinen Einfluss auf die Mortalität, jedoch war der Adiponektinspiegel bei mangelernährten Patienten erhöht. Diese Arbeit legt die enge Assoziation zwischen Malnutrition und Inflammation dar und zeigt die damit einhergehende erhöhte Mortalität bei Hämodialysepatienten. IL-6 scheint dabei ein nicht unbedeutender Prognosefaktor zu sein.
description: The MIA syndrome describes the interaction between malnutrition, inflammation and atherosclerosis in dialysis patients. This dissertation is based on a clinical trial about the different factors influencing the MIA syndrome. The dissertation focuses on the interaction between malnutrition, inflammation and mortality in the first year of the trial. Further more, it seeks to analyse the predictability of certain cytokines on the clinical outcome. 123 patients were recruited from four dialysis centers in eastern Germany. Of this group, 73 patients were considered to be malnourished and 50 patients were considered to be well nourished. Malnourished patients had a higher mortality rate in the first year of the trial. They also had a higher inflammatory response. IL-6 was the only cytokine out of eleven cytokines that were analysed that was associated with malnutrition and a higher mortality rate. Lower RANTES concentrations were associated with a higher mortality rate. Adiponectine did not have an influence on the mortality rate although malnourished patients had higher levels of adiponectine. The dissertation shows the strong link between malnutrition, inflammation and mortality in dialysis patients. IL-6 appears to have a significant impact on the patient´s outcome.
Current methods of mouse euthanasia : refinements and aversion
Creators: name: Moody, Carly
Publisher: name: University of British Columbia
Year: 2013

description: Mice are routinely euthanized by gradual-fill carbon dioxide (CO₂) gas or with isoflurane; the aim of my thesis was to assess refinements to these procedures. The first study assessed the CO₂ method of euthanasia with the aim of minimizing the duration of dyspnea without exposing mice to painful concentrations (>40% CO₂). Various CO₂ flow rates (20, 30, 40, 50% cage vol/min) were used to examine the duration between the onset of dyspnea (identified by laboured breathing) and insensibility (identified by recumbency, loss of the righting reflex or loss of the pedal withdrawal reflex). The interval between the onset of dyspnea and loss of the righting reflex averaged 38.2 ± 2.4 s versus 59.2 ± 2.4 s, using 50% and 20% cage vol/min fill rates, respectively. Thus even at the highest flow rate tested mice experienced more than 30 s of dyspnea, suggesting other methods of euthanasia should be used when possible. The second study examined the same three measures of insensibility during the isoflurane method of euthanasia, with the aim of identifying when it is safe to switch to a high flow rate of CO₂, without subjecting conscious animals to painful concentrations. The results suggested that the onset of recumbency and loss of the righting reflex are not safe indicators of insensibility when using induction with isoflurane; continued induction with 5% isoflurane carried by 17% cage vol/min of oxygen for a minimum of 79 s after the appearance of recumbency is advised before switching to a high flow rate of CO₂. The final study in this thesis used a light-aversion test to examine mouse aversion to: 1) 20% gradual-fill CO₂, 2) 5% isoflurane administered using a vaporizer, and 3) 5% isoflurane administered using the drop-method. Mice chose to remain in the dark chamber longer when exposed to isoflurane administered using a vaporizer compared to both CO₂ and isoflurane drop. Mice were also more likely to become recumbent in the dark side when exposed to the isoflurane vaporizer versus other methods. These results indicate that isoflurane delivered by a vaporizer is a humane refinement for the euthanasia of laboratory mice.
Modelling of large non-linear systems integrating thermal and electromagnetic models
Creators: name: Steer, M. B.
name: Christoffersen, C. E.
name: Gutierrez, H.
name: Nakazawa, S.
name: Abdullah, M.
name: Nutesson, T. W.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: The integration of thermal and electromagnetic modeling with traditional circuit simulation is becoming necessary for the analysis of large microwave and millimeter-wave systems. Issues relating to the abstraction required to interface these analyses are discussed particularly as they relate to spatial power combing systems.
Design-oriented electromagnetic modeling for MMICs
Creators: name: Jansen, R.H.
name: Aachen, A. John
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: Following a broader overview of the status of microwave CAD during EuMC '95, this paper now focusses on the progress and trends of full-wave electromagnetic (EM) simulation software as it is widely used today in the industry for MMIC design. The addition of new features, performance enhancements and improved functionality having emerged over the last 3 - 4 years is outlined. Also, still existing shortcomings, trade-offs and sources of numerical error are addressed. The use of such design-oriented EM software and associated linking methodologies in the context of microwave and mm-wave CAD is discussed.
On the cogrowth of Thompson's group $F$
Creators: name: Elder, Murray
name: Rechnitzer, Andrew
name: Wong, Thomas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 20F65, 05A05

description: We investigate the cogrowth and distribution of geodesics in R. Thompson's group $F$.
description: 20 pages, 6 figures
SiC for microwave power applications: present status and future  trends
Creators: name: Trew, R.J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: A variety of RF and microwave electronic devices can be fabricated from SiC. MESFET's and SIT's fabricated from 4H-SiC grown on 6H- or 4H-SiC substrates with very good dc and RF performance have been demonstrated. These devices are being developed for microwave power amplifiers for short pulse, high power RADAR applications at C, S, and X-bands, and for communications amplifiers for base station transmitters at L and S band. These devices have the potential to produce RF power densities in excess of that possible from Si or GaAs based devices, with power-added efficiency approaching theoretical limits for class A and B operation. SiC MESFET's can produce RF power density on the order of 4 W/mm and experimental devices are rapidly approaching the theoretical potential.
Disordered graphene and boron nitride in a microwave tight-binding analog
Creators: name: Barkhofen, S.
name: Bellec, M.
name: Kuhl, U.
name: Mortessagne, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Experiments on hexagonal graphene-like structures using microwave measuring techniques are presented. The lowest transverse-electric resonance of coupled dielectric disks sandwiched between two metallic plates establishes a tight-binding configuration. The nearest-neighbor coupling approximation is investigated in systems with few disks. Taking advantage of the high flexibility of the disks positions, consequences of the disorder introduced in the graphene lattice on the Dirac points are investigated. Using two different types of disks, a boron-nitride-like structure (a hexagonal lattice with a two-atom basis) is implemented, showing the appearance of a band gap.
description: 12 pages, 14 figures
Millimeter-wave power InP HEMTs: challenges and prospects
Creators: name: Del Alamo, J. A.
name: Somerville, M. H.
name: Blanchard, R. R.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: At this time, GaAs PHEMTs exhibit higher power output than InP HEMTs at 60 and 94 GHz. InP HEMTs, however, feature power-added efficiency values that exceed GaAs PHEMTs by about 5 to 20 percentage points at 94 GHz. As a consequence, InP HEMTs remain a superior candidate for millimeter-wave power applications. The reason for the inferior output power of InP HEMTs lies in their relatively small on-state and off-state breakdown voltages. This paper reviews the state of the art of millimeter-wave power HEMT technology as well as recent advances in understanding of breakdown phenomena. It also discusses the prospects and challenges facing InP HEMTs in performance, reliability and low-cost manufacturing.
Octoplasia Brenske 1892
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Octoplasia

description: Octoplasia Brenske, 1892b
[6 species].
Type species Lachnosterna lineata Sharp, 1876, by subsequent designation of Itoh (1996).
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
Soil nutrient status and fungal community structure of high and low phosphatase microsites in a mixed Douglas-­fir paper birch stand
Creators: name: Godin, Aaron Michael
Publisher: name: University of British Columbia
Year: 2013

description: Phosphorus (P) plays an important role in driving primary production in terrestrial ecosystems. However, the majority of P in soil is covalently bound to complex organic compounds and is largely inaccessible to plants. Soil fungi facilitate the release of mineral P from organic forms, through the release of extracellular phosphatase enzymes. To date, very little work has been done to identify fungal communities physically located with phosphatase activity in situ in the field. In the current study, I examined soil nutrient status and fungal communities associated with high and low phosphatase areas. I used an enzyme imprinting method to detect mmscale phosphatase activity from soil profiles in a mixed Douglas fir and paper birch stand in British Columbia. Small (0.05 g) soil samples were removed from areas of high and low phosphatase activity at five root windows. Total extractable P (p=0.95), inorganic phosphate (p=0.87), and soluble organic P (p=0.20) were not different between areas of high and low phosphatase activity across all windows, suggesting that P availability alone was not important in driving phosphatase activity. However, percent total carbon (p=0.05) and percent total nitrogen (p=0.05) were higher in microsites with high phosphatase activity. This implies that higher levels of carbon and nitrogen, especially relative to P, stimulated phosphatase activity. Additions of carbon (C) and nitrogen (N) to randomly-selected microsites, to test this hypothesis, were inconclusive. I used pyrosequencing to characterize fungal communities from microsites differing in phosphatase activity. When examined as assemblages of operational taxonomic units (OTUs), fungal communities were not different (Bray Curtis, p=0.53; Jaccard p=0.52) between areas of high and low phosphatase activity iii across all windows, though communities did differ among the five windows (Bray Curtis, p<0.01; Jaccard p<0.01). Furthermore, the number of sequences as OTUs grouped by trophic status differed between microsites in some windows. Specifically, the ratio of saprotrophic (SAP) to ectomycorrhizal (EM) fungi was higher in high than low phosphatase sites in windows with low EM fungal richness. The results of these experiments contribute to our understanding of fine-scale controls of P cycling in forest soils, as well as the relative importance of various spatial scales in structuring soil fungal communities.
Supplementary document for A simple polarimetric measurement based on a computational algorithm - 6482204.pdf
Creators: name: Wang, Xiaoqian
name: Zhu, Kean
name: Zhu, Kaihua
name: Shen, D
name: Zheng, Zhi-gang
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplementary Materials
Advertising and endogenous exit in a differentiated duopoly
Creators: name: Mantovani, Andrea
name: Mion, Giordano
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/13 Scienze merceologiche

description: In this paper we consider a duopoly two-stage duopoly where firms first decide whether to invest in advertising and then compete in prices. Advertising has two effects: a market enlargement for both firms and a predatory gain for the investing firm only. Both symmetric and asymmetric equilibria may arise. The two most interesting cases are a coor-dination game where both firms investing and non-investing are equilibria, and a chicken game where only one firm invests while the other is possibly driven (endogenously) out of the market. Our results suggest that product differentiation has an ambiguous impact on investment in advertising and that strong product substitutability may induce a coordination problem.
FDI: the current state of play
Creators: name: Soci, Anna
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/01 Economia politica

description: Economic theory has not been delving extensively and systematically into the strictly related phenomena of Foreign Direct Investment (FDI) and Multinational Enterprise (MNE) until the 1980s. Two distinct circumstances have been favouring this recent renewed interest: a big surge in the former and a new space for the latter in the mainstream economic theory. FDI - the main way through which MNEs act - has been growing recently at an impressive rate (more than world trade), and that this growth has had the puzzling feature of concerning particularly the industrialised countries, which have been reciprocally engaged in such capital movements. The emergence of a new body of trade and location theory made it possible to enhance the understanding of this phenomenon. The overall theme is on the frontier of the research in international trade and applied industrial economics, and it is complex and unsettled. The subject of this paper is just to fix up ideas about some selected topics. Section I briefly reviews the general theoretical setting from the appearance of the OLI paradigm in the late ‘70s to what has been evolving through the subsequent two decades. Section II surveys the main effects of FDI on the home and the host countries respectively. Section III focuses on European economic geography with the interest in the effects of European economic integration on MNEs’ activity in the form of FDI. Some concluding remarks close the paper.
Optimal Participation Income and Negative Income Tax in poverty Alleviation Programs
Creators: name: Lanzi, Diego
name: Delbono, Flavio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/06 Economia applicata

description: We compare two different redistributive policies specifically designed to alleviate poverty. The first one is inspired to the idea of participation income, the second focused on the introduction of a negative income tax. Briefly characterizing an economy with workers and non-workers and using income as evaluation space for poverty, we determine optimality conditions of both measures under a flat rate labor income tax. Finally, we emphasize a necessary condition for these measures to mitigate poverty.
Onychosophrops Frey 1972
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Onychosophrops

description: Onychosophrops Frey, 1972, as Sophrops (Onychosophrops)
[3 species].
Type species Sophrops (Onychosophrops) brevisetosa Frey, 1972, by monotypy.
Status revised to Onychosophrops by Nomura (1977).
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
Indexation Rules, Risk Aversion, and Imperfect Information
Creators: name: Benassi, Corrado
name: Antonello E., Scorcu
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/01 Economia politica

description: Nominal wage adjustment is modeled as resulting from bargaining between a risk neutral firm and a risk averse worker, in an environment where the rate of inflation is a random variable. Risk aversion makes for endogenous indexation arrangements, which deliver partial indexation as they exploit imperfect inflation indices; risk aversion also generates a positive correlation between indexation and inflation variance. The model suggests a distinction between complete vs incomplete inflation adjustment on the one hand, and perfect vs imperfect adjustment on the other hand.
Correlated liquidity shocks, financial contagion and asset price dynamics
Creators: name: Andergassen, Rainer
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/01 Economia politica

description: Recent literature shows how the destabilising e¤ect of portfolio insurance activity on the price of the underlying asset depends on the liquidity of the asset market. We build a simple model where market timers shift capital around asset markets in order to exploit gains from temporary excess-volatility of asset prices. In this way, market timers increase the liquidity of asset markets reducing the excess volatility, while they increase the cross-market correlation, whereas long-ranged financial contagion eventually occurs. We show how liquidity of asset markets, cross-market correlation and excess volatility of asset prices depend on structural parameters of asset markets.
Explicit barycentric weights for polynomial interpolation in the roots or extrema of classical orthogonal polynomials
Creators: name: Wang, Haiyong
name: Huybrechs, Daan
name: Vandewalle, Stefan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: Barycentric interpolation is arguably the method of choice for numerical polynomial interpolation. The polynomial interpolant is expressed in terms of function values using the so-called barycentric weights, which depend on the interpolation points. Few explicit formulae for these barycentric weights are known. In [H. Wang and S. Xiang, Math. Comp., 81 (2012), 861--877], the authors have shown that the barycentric weights of the roots of Legendre polynomials can be expressed explicitly in terms of the weights of the corresponding Gaussian quadrature rule. This idea was subsequently implemented in the Chebfun package [L. N. Trefethen and others, The Chebfun Development Team, 2011] and in the process generalized by the Chebfun authors to the roots of Jacobi, Laguerre and Hermite polynomials. In this paper, we explore the generality of the link between barycentric weights and Gaussian quadrature and show that such relationships are related to the existence of lowering operators for orthogonal polynomials. We supply an exhaustive list of cases, in which all known formulae are recovered and also some new formulae are derived, including the barycentric weights for Gauss-Radau and Gauss-Lobatto points. Based on a fast ${\mathcal O}(n)$ algorithm for the computation of Gaussian quadrature, due to Hale and Townsend, this leads to an ${\mathcal O}(n)$ computational scheme for barycentric weights.
description: 23 pages, 4 figures, revised version with minor changes
My scale or your meter? Evaluating methods of measuring the internet
Creators: name: Giacomello, Giampiero
name: Picci, Lucio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/06 Economia applicata

description: Measuring the Internet - the size of its infrastructure, how many people use it, and their prevalent uses - is of obvious interest. However, the wealth of available quantitative information regarding the Internet so far has fallen short of satisfying the many needs that it would fulfill. We set the problem of measuring the Internet into a framework that allows us to derive insights on the peculiar nature of the Internet as a piece of infrastructure. After reviewing the current measures available, while drawing a distinction between the object of measurement, and the types of institutions involved in it, we provide some indications on what data should be trusted more, and how better measures of the Internet could be obtained.
Endogenous innovation waves and economic growth
Creators: name: Andergassen, Rainer
name: Nardini, Franco
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-S/06 Metodi matematici dell'economia e delle scienze attuariali e finanziarie

description: We propose a simple model where large innovation waves arise from the endogenous propagation of information around sectors. Innovators of each sector invest in internal R&D and in local search for information. We show that depending on the structural parameters of the single sectors, some of the R&D sectors will engage in local search while others will not. Through localised search for information, technology adopted in certain sectors can be adopted also in other sectors, leading to a large technological correlation, and eventually to long ranged innovation waves. We characterise the endogenous balanced growth path of the economy, and the short run fluctuations around it. The model predicts a linear, positive relationship between the short run fluctuations and the long run growth rate. We test this latter relationship and find that we cannot reject the predictions of the model.
Feedback effects of dynamic hedging strategies in the presence of transaction costs
Creators: name: Agliardi, Elettra
name: Andergassen, Rainer
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/01 Economia politica

description: We study the destabilising effect of dynamic hedging strategies on the price of the underlying in the presence of sunk costs of transaction. Once sunk costs of transaction are taken into account, continuous portfolio rehedging is no longer an optimal strategy. Using a non-optimising (local in time) strategy for portfolio rebalancing, explicit dynamics for the price of the underlying are derived, focusing in particular on the excess volatility and feedback effects of these portfolio insurance strategies. Further, we show how these latter depend on the heterogeneity of the insured payoffs. Finally, conditions are derived under which it may still be reasonable, from a practical viewpoint, to implement Black - Scholes strategies.
Asymmetric Information and Monetary Policy in Common Currency Areas
Creators: name: Bottazzi, Laura
name: Manasse, Paolo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: SECS-P/01 Economia politica

description: In a Common Currency Area (CCA) the Common Central Bank sets a uniform rate of inflation across countries, taking into account the area’s economic conditions. Suppose that countries in recession favor a more expansionary policy than countries in expansion, a conflict of interest between members arises when national business cycles are not fully syncronized. If governments of member countries have an informational advantage over the state of their domestic economy, such conflict may create an adverse selection problem: national authorities overemphasize their shocks, in order to shape the common policy towards their needs. This creates an inefficiency over and above the one-policy-fits-all cost discussed in the optimal currency area literature. In order to minimize this extra-burden of asymmetric information, monetary policy must over-react to large symmetric shocks and under-react to small asymmetric ones. The result is sub-optimal volatility of inflation.
Magnetic Catalysis in AdS4
Creators: name: Bolognesi, Stefano
name: Tong, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the formation of fermion condensates in Anti de Sitter space. In particular, we describe a novel version of magnetic catalysis that arises for fermions in asymptotically AdS4 geometries which cap off in the infra-red with a hard wall. We show that the presence of a magnetic field induces a fermion condensate in the bulk that spontaneously breaks CP symmetry. From the perspective of the dual boundary theory, this corresponds to a strongly coupled version of magnetic catalysis in d=2+1.
description: 22 pages, 4 figures. v2: References added, factors of 2 corrected, extra comments added in appendix. v3: extra comments about fermion modes in a hard wall background. v4: A final factor of 2
Where to look for solving the gauge hierarchy problem?
Creators: name: Wetterich, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A mass of the Higgs boson close to 126 GeV may give a hint that the standard model of particle physics is valid up to the Planck scale. We discuss perspectives for the solution of the gauge hierarchy problem at high scales. Scenarios with an ultraviolet fixed point have predicted a Higgs boson mass very close to 126 GeV if the fixed point value of the quartic scalar coupling is small. In this case the top quark pole mass should be close to 172 GeV.
description: additional references, somewhat extended discussion, 5 pages
Energy dynamics in a simulation of LAPD turbulence
Creators: name: Friedman, B.
name: Carter, T. A.
name: Umansky, M. V.
name: Schaffner, D.
name: Dudson, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Energy dynamics calculations in a 3D fluid simulation of drift wave turbulence in the linear Large Plasma Device (LAPD) [W. Gekelman et al., Rev. Sci. Inst. 62, 2875 (1991)] illuminate processes that drive and dissipate the turbulence. These calculations reveal that a nonlinear instability dominates the injection of energy into the turbulence by overtaking the linear drift wave instability that dominates when fluctuations about the equilibrium are small. The nonlinear instability drives flute-like ($k_\parallel = 0$) density fluctuations using free energy from the background density gradient. Through nonlinear axial wavenumber transfer to $k_\parallel \ne 0$ fluctuations, the nonlinear instability accesses the adiabatic response, which provides the requisite energy transfer channel from density to potential fluctuations as well as the phase shift that causes instability. The turbulence characteristics in the simulations agree remarkably well with experiment. When the nonlinear instability is artificially removed from the system through suppressing $k_\parallel=0$ modes, the turbulence develops a coherent frequency spectrum which is inconsistent with experimental data.
Zur Tonhöhenwahrnehmung von oktav-komplexen Tönen - Psychophysik, psychoakustische Theorie und computationale Modellierung
Creators: name: Krüger, Sebastian
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 152

description: In der vorgelegten Arbeit wurden spezifische Fragestellungen bei der menschlichen Tonhöhenwahrnehmung von oktav-komplexen Tönen, sog. Shepard-Tönen, untersucht. Oktav-komplexe Töne bestehen aus im Oktavabstand angeordneten Sinusschwingungen, wobei die Amplituden der einzelnen Sinusschwingungen durch eine glockenförmige Hüllkurve definiert sind. Aufgrund der Ambiguität der Tonhöhe lassen sich mit oktav-komplexen Tönen Illusionen, wie z.B. die zirkuläre Tonhöhe oder das Tritonus-Paradoxon erzeugen. Den Kern der Arbeit bilden sieben experimentelle Studien zur Tonhöhenwahrnehmung von oktav-komplexen Tönen. Weiterhin wird ein Modell (P4) zur Beschreibung und Vorhersage der Antworten aus den Experimenten vorgeschlagen und überprüft. In den einzelnen Experimenten werden verschiedene Fragestellungen beantwortet. So konnte im Experiment zur Tritonusaufgabe gezeigt werden, dass sich der vermutete Zusammenhang zwischen Sprachgemeinschaft und der Beurteilung von Tonhöhen oktav-komplexer Töne im Abstand von sechs Halbtonschritten, bekannt als Tritonusparadoxon, nicht finden lässt. Weiterhin wurden zwei vollständige Paarvergleichsexperimente durchgeführt, welche den Einfluss verschiedener Parameter (Anzahl der Teiltöne, Position und Form der Hüllkurve) auf die Beurteilung der Tonhöhe untersuchen. Als Erklärung werden zwei Urteilsstrategien (Chroma- vs. Fundamentalurteil) zur Beurteilung der Tonhöhe von oktav-komplexen Tönen gegenübergestellt. Es konnte gezeigt werden, dass beide Strategien fließend ineinander übergehen. Auch wurde deutlich, dass das Vorhandensein der Hüllkurve eine notwendige Voraussetzung für die Zirkularität der Tonhöhenurteile darstellt. In zwei weiteren Experimenten zur binauralen Tonhöhenwahrnehmung wurden die Teiltöne oktav-komplexer Töne in drei Bedingungen so aufgeteilt, dass die Frage nach dem Ort der Tonhöhenbeurteilung (zentral vs. peripher) und nach der Art des Mechanismus (Fusion vs. Suppression) beantwortet werden kann. Die Ergebnisse weisen auf einen zentralen Mechanismus hin, welcher die lateralen Teilreize fusioniert. Auch wurde im Rahmen der Experimente zur binauralen Tonhöhenwahrnehmung ein neues akustisches Paradoxon abgeleitet und experimentell überprüft. Dabei kommt es zur Umkehrung des relativen Tonhöhenurteils, wenn vormals dichotisch präsentierte Teilreize kombiniert dargeboten werden.
GaN heterostructure field effect transistors
Creators: name: Adesida, I.
name: Ping, A.T.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: A summary of the performance of AlGaN/GaN heterostructure field effect transistors on sapphire and SiC substrates are presented. High total power have been demonstrated by these devices at microwave frequencies. The prospects of utilizing the devices for high power integrated amplifiers are excellent although the issue of thermal management will need to be addressed especially for devices and circuits on sapphire.
Supplementary document for Three-dimensional location system based on an L-shaped array of Rydberg atomic receivers - 6438391.pdf
Creators: name: Yan, Yang
name: Yuan, jinpeng
name: Zhang, Linjie
name: xiao, liantuan
name: jia, suotang
name: wang, lirong
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplement 1
SiGe - Key technology for economic solutions in high frequency
Creators: name: Arndt, J.
name: Dietrich, H.
name: Schüppen, A.
name: Erben, U.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: The demonstrated potential of SiGe is reviewed and a performance and cost effective production technology SiGel is presented. This process is oriented to RF-solutions between 1 and 10 GHz, including all the active and passive devices needed for those applications. Transistors with 50 GHz fT and fmax are complemented by 30 GHz fT, 6 V Uceo transistors for power amplifiers showing a power added efficiency of 60 %. The manufacturability and reliability of SiGel is demonstrated and as first product a DECT frontend IC is shown with a noise figure of 1.6 dB for the LNA , and 28 dBm output power for the PA with up to 47% PAE, measured on packaged devices at 1.9 GHz.
Gamma-rays From Warm WIMP Dark Matter Annihilation
Creators: name: Yuan, Qiang
name: Cao, Yixian
name: Liu, Jie
name: Yin, Peng-Fei
name: Gao, Liang
name: Bi, Xiao-Jun
name: Zhang, Xinmin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The weakly interacting massive particle (WIMP) often serves as a candidate for the cold dark matter, however when produced non-thermally it could behave like warm dark matter. In this paper we study the properties of the $γ$-ray emission from annihilation of WIMP dark matter in the halo of our own Milky-Way Galaxy with high resolution $N$-body simulations of a Milky-Way like dark matter halo, assuming different nature of WIMPs. Due to the large free-streaming length in the scenario of warm WIMPs, the substructure contend of the dark matter halo is significantly different from that of the cold WIMP counterpart, resulting in distinct predictions of the $γ$-ray signals from the dark matter annihilation. We illustrate these by comparing the predicted $γ$-ray signals from the warm WIMP annihilation to that of cold WIMPs. Pronounced differences from the subhalo skymap and statistical properties between two WIMP models are demonstrated. Due to the potentially enhanced cross section of the non-thermal production mechanism in warm WIMP scenario, the Galactic center might be prior for the indirect detection of warm WIMPs to dwarf galaxies, which might be different from the cold dark matter scenario. As a specific example we consider the non-thermally produced neutralino of supersymmetric model and discuss the detectability of warm WIMPs with Fermi $γ$-ray telescope.
description: 12 pages, 10 figures and 1 table; accepted by Phys. Rev. D
Continuous Quantum Hypothesis Testing
Creators: name: Tsang, Mankei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I propose a general quantum hypothesis testing theory that enables one to test hypotheses about any aspect of a physical system, including its dynamics, based on a series of observations. For example, the hypotheses can be about the presence of a weak classical signal continuously coupled to a quantum sensor, or about competing quantum or classical models of the dynamics of a system. This generalization makes the theory useful for quantum detection and experimental tests of quantum mechanics in general. In the case of continuous measurements, the theory is significantly simplified to produce compact formulae for the likelihood ratio, the central quantity in statistical hypothesis testing. The likelihood ratio can then be computed efficiently in many cases of interest. Two potential applications of the theory, namely quantum detection of a classical stochastic waveform and test of harmonic-oscillator energy quantization, are discussed.
description: v1: first draft; v2: updated and submitted; v3: accepted by PRL, 5 pages, 1 figure, and Supplementary Material