cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
LEGAL REGULATION OF MANAGEMENT IN THE FIELD OF USE AND LAND PROTECTION
Creators: name: Overkovska, T.
Publisher: name: Colloquium-journal
Year: 2021
Subjects: management
functions
land
land protection
public authorities
functional and legal support
system of gov-erning bodies
competence of governing bodies
principles of management.

description: The article considers some legal aspects of legal regulation of land use and protection. The principles on the basis of which the legal regulation of administrative activity is carried out are analyzed. It is determined that management in the field of land use and protection is one of the types of social management, and in the process of implementing state policy in the field of land use government and officials perform regulatory, in-centive, control and punitive functions, which are analyzed in the article. It is determined that important areas of state policy in the field of land management and protection are standardization and regulation in the field of land use. The system of governing bodies is defined as a set of structural elements endowed with the relevant powers defined by current regulations. Based on the results of the research, the article formulates conclusions that are based on the provisions of legal doctrine and current legislation.
Untersuchung zum Informationsgehalt urologischer Arztbriefe des Universitätsklinikums Magdeburg von Patienten mit einem nicht-muskelinvasiven Harnblasenkarzinom (NMIBC) mit Auswertung der Rezidiv- und Progressionshäufigkeit im beobachteten Zeitraum
Creators: name: Mathew, Marcella Julia Henrietta
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2019
Subjects: subject: Blasenkrebs
subject: 362.19699461

description: Das nicht-muskelinvasive Harnblasenkarzinom ist der häufigste Tumor der ableitenden Harnwege, hat ein hohes Rezidivrisiko und bedarf einer langandauernden Tumornachsorge. Arztbriefe von 160 Patienten mit einem diagnostizierten NMIBC (2012-2014) und 157 Epikrisen im Follow-up (bis Ende 2016) wurden ausgewertet. 317 Epikrisen wurden in Bezug auf den Informationsgehalt für den nachbehandelnden Arzt untersucht. Die Daten wurden auch hinsichtlich des Rezidivs- und Progressionsverhaltens ausgewertet. In keinem der Arztbriefe wurde die Berufsanamnese angegeben, obwohl Blasenkarzinome u.U. als Berufserkrankung anzusehen sind, mit rentenrechtlichen Konsequenzen für den Patienten. Die Raucheranamnese als Hauptrisikofaktor wurde nur in 15,6% der Briefe vermerkt. In fast allen Arztbriefen waren Angaben zur Tumorformel vorhanden, die für die leitliniengerechte Tumornachsorge notwendig sind. Eine konkrete Nachbehandlungsempfehlung fehlte in 2,2% der Epikrisen, in weiteren 10,1% wurde lediglich eine „allgemein leitliniengerechte Tumornachsorge“ empfohlen. Hier muss der behandelnde Arzt die notwendige Nachsorgetherapie aus den komplexen Leitlinien der EAU selbst heraussuchen. Die Patientengruppe mit einer Nachsorgeempfehlung für eine Zystoskopie zeigte signifikant eine längere Rezidivfreiheit als Patienten, denen eine Nachresektion empfohlen wurde. Patienten, die eine Mitomycinfrühinstallation erhielten, hatten ein signifikant späteres Auftreten von Rezidiven. Patienten mit einem höheren Tumorstadium bei der 1. TURB im Beobachtungszeitraum erlitten früher ein Rezidiv als Patienten mit einem niedrigeren Tumorstadium.
A J-band Transceiver MMIC with image rejection
Creators: name: Zelley, C. A.
name: Gould, P. A.
name: Munday, P. D.
name: Ashcroft, R. W.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2000
Subjects: ING-INF/01 Elettronica

description: This paper describes a J-band (15 GHz) transceiver MMIC with image rejection that has been designed for RADAR T/R module applications. The MMIC consists of a switched attenuator, an LNA, a Transmit/Receive switch, an image rejection mixer and a local oscillator buffer amplifier. The size of the MMIC is 6.48 mm by 4.47 mm. In receive mode the MMIC has a conversion gain in excess of 10 dB with less than 1 dB of ripple and noise figure less than 4 dB across a 10 GHz to 16.5 GHz band. The Input P1dB is –13 dBm. In transmit mode the conversion gain is –12 dB with an input P1dB of +15 dBm. The Transceiver MMIC was fabricated using the GMMT, 0.25 m m, H40 pHEMT process. This is believed to be the first integrated transceiver MMIC designed specifically for this frequency band.
Synthesis and characterization of antimony (III) heteroleptic derivatives having oxygen, nitrogen and sulfur containing organic moieties with their antibacterial and antioxidant activities
Creators: name: Beniwal, Savita
name: Kumar, Ashok
name: Chhimpa, Sunil
name: Rai, Jaya
name: John, P. J.
name: Singh, Yashpal
name: Sharma, Jyoti
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Six antimony(III) heteroleptic derivatives of the type [(R)(R′)C = NO]2Sb[S2CNCH2(CH2)3C︹H2][where R= –C6H5, R′= –CH3 (A); R= –C6H4CH3, R′= –CH3 (B); R= –C6H4Cl, R′= –CH3 (C); R= –C6H4Br, R′= –CH3 (D); R= –C6H4OH, R′= –H (E); R(R′)C = C–CH2–(CH2)3–C︹H2 (F)] have been synthesized by the reactions of antimony trichloride with the sodium salt of substituted oximes and piperidine dithiocarbamate in 1:2:1 stoichiometry. These heteroleptic derivatives have been characterized by physico-chemical and elemental analyses (C, H, N, S and Sb). The tentative structures have been proposed on the basis of IR, 1H and 13C NMR spectral and LC-mass spectrometry. The oxime moiety behaves as a unidentate ligand whereas the dithiocarbamate moiety behaves in mono functional anisobidentate manner. Distorted trigonal bipyramidal geometry around antimony metal has been proposed for these derivatives. Powder XRD study revealed that derivative (A) has nano range particle size, which supports the crystalline nature of the derivative. These newly synthesized heteroleptic antimony(III) derivatives have been examined against the B. Subtilis (gram positive) and E. coli (gram negative) bacteria for antibacterial potential and two derivatives [(C6H5)(CH3)C = NO]2Sb[S2CNCH2(CH2)3CH2︹] (A) and [(C6H4CH3)(CH3)C = NO]2Sb[S2C NCH2(CH2)3CH2︹] (B) were examined for their antioxidant activity. Structural-activity relationship for antibacterial potential amongst the six derivatives (A-F) was also explored.
Strategies employed by enzymes to generate and stabilize radical intermediates : an examination of adenosylcobalamin- and pyridoxal 5'-phosphate-dependent ornithine 4,5-aminomutase
Creators: name: Makins, Caitlyn
Publisher: name: University of British Columbia
Year: 2014

description: Enzymes that employ radical-based chemistry are able to catalyze a diverse array of energetically and chemically challenging reactions. Notably, their ability to break C–C, C–N, and C–H bonds makes them appealing targets for the development of biocatalysts. The research herein aims to investigate the strategies employed by radical enzymes in the generation, stabilization, and propagation of radical intermediates. Using adenosylcobalamin- and pyridoxal 5'-phosphate-dependent ornithine 4,5-aminomutase (OAM) as a model system, we have made several advances toward this end. In Chapter 2, a combination of deuterium kinetic isotope effect, site-directed mutagenesis, modeling, and EPR studies were used to highlight structural differences between OAM and its structural homologue lysine 5,6-aminomutase (5,6-LAM) that contribute to their different mechanistic behaviours. Based on the obtained results, we propose that weaker substrate binding in 5,6-LAM compared to OAM accounts for the more promiscuous nature of 5,6-LAM, as well as its increased tendency to undergo radical-mediated suicide inactivation. In Chapter 3, mutagenesis of a conserved glutamate residue, which forms electrostatic contact with the adenosyl ribose moiety of adenosylcobalamin in OAM and methylmalonyl-CoA mutase only upon substrate binding, reveals the contribution of electrostatics to homolysis of the Co–C bond. Electrostatic stabilization of the adenosyl group by the conserved glutamate residue was found to account for approximately half of the 10¹²±¹-fold rate enhancement for homolysis achieved by the adenosylcobalamin-dependent enzymes. This mechanism for radical generation is conserved amongst the class I mutases and class III aminomutases and acts to prevent the enzymes from spurious radical generation in the absence of substrate. In Chapters 4 and 5, spectroscopic techniques in combination with deuterium kinetic isotope effect studies were used to show that specific active site residues modulate radical catalysis in ornithine 4,5-aminomutase through their interactions with the pyridoxal 5'-phosphate cofactor. In particular, proton donors and acceptors to the Schiff base and pyridine nitrogen of pyridoxal 5'-phosphate decrease the barrier to isomerization and stabilize radical intermediates such as the proposed azacyclopropylcarbinyl radical.
Vergleich des perioperativen sowie Langzeitverlaufs (5 Jahre FU) nach Gastric Banding, Magenbypass und Sleeve Gastrektomie
Creators: name: Diesing, Maresa
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2019
Subjects: subject: Magenchirurgie
subject: Fettsucht
subject: 617.43

description: Die chirurgische Behandlung der Adipositas befindet sich in stetigem Wandel. Dabei existieren diverse Op-Verfahren, die sich in den letzten Jahren etabliert haben. Hierzu gehören die drei in dieser Arbeit verglichenen Verfahren Magenbypass (RYGBP), Sleeve Gastrektomie (SG) und Gastric Banding (GB), wobei letzteres Verfahren aufgrund häufiger Reoperationen mittlerweile nur noch selten eingesetzt wird. Mit Hilfe der Daten aus der „Qualitätssicherungsstudie für operative Therapie der Adipositas“ wurde die Demographie der Patienten, die Mortalität, die Entwicklung von bestehenden Komorbiditäten und Gewichtsveränderungen 5 Jahre postoperativ analysiert. Als Resultat der Analyse konnte festgestellt werden, dass sich in Bezug auf die Gewichtsabnahme keine signifikanten Unterschiede zwischen RYGBP und SG zeigten. Patienten mit der Komorbidität arterielle Hypertonie und Diabetes mellitus Typ 2 wiesen in der RYGBP-Gruppe einen signifikant besseren Rückgang der Erkrankung auf, als die Patienten der SG-Gruppe. Zudem fand sich ein signifikant höheres Auftreten eines gastroösophagealen Reflux nach SG-Operation. In der RYGBP-Gruppe wurde ein mathematisch höherer Anteil an perioperativen Komplikationen beobachtet. Die Ergebnisse dieser Arbeit lassen eine Optimierung der individuellen patientenorientierten Entscheidung zur Abwägung und Wahl eines bestimmten Therapieverfahrens zu.
A simplified structure for the second order cosmological perturbation equations
Creators: name: Uggla, Claes
name: Wainwright, John
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Increasingly accurate observations of the cosmic microwave background and the large scale distribution of galaxies necessitate the study of nonlinear perturbations of Friedmann-Lemaitre cosmologies, whose equations are notoriously complicated. In this paper we present a new derivation of the governing equations for second order perturbations within the framework of the metric-based approach that is minimal, as regards amount of calculation and length of expressions, and flexible, as regards choice of gauge and stress-energy tensor. Because of their generality and the simplicity of their structure our equations provide a convenient starting point for determining the behaviour of nonlinear perturbations of FL cosmologies with any given stress-energy content, using either the Poisson gauge or the uniform curvature gauge.
description: 30 pages, no figures. Changed title to the one in published version and some minor changes and additions
Approaching optical metrology with multiple light sources and compressive sensing
Creators: name: Müller, André F.
name: Falldorf, Claas
name: Bergmann, Ralf B.
Publisher: name: Society of Photo‑Optical Instrumentation Engineers (SPIE)
Year: 2022
Subjects: subject: Light sources
subject: Mars
subject: Compressed sensing
subject: Freeform optics
subject: Spatial light modulators
subject: Aspheric optics
subject: Fourier transforms
subject: 600

description: Complex optical surfaces such as aspheres and freeforms are used in optical systems to reduce aberrations or to achieve high optical performance with a compact design and less optical surfaces. Due to limited acceptance angles of conventional interferometric techniques, there is still no satisfactory solution for their form measurement that is at the same time precise, flexible, and fast. Often these surfaces are surveyed by pointwise measurement, or the aperture problem is overcome by elaborately compensating wave front deviations either through compensator lenses or computer-generated holograms. Alternatively, several subapertures are used to capture the whole surface. These, however, have to be recorded in sequence since the superposition of multiple independent wave fields cannot be assigned a time-independent wave front. Instead, we present a compressive sensing approach for Multiple Aperture Shear-Interferometry (MArS) which captures multiple overlapping subapertures simultaneously and allows a flexible measurement of aspheres with multi-spot illumination. MArS uses the mutual intensity as the primary measurand which is still well defined for superposed mutually incoherent wave fields. The mutual intensity is sparse in phase space for there are only a finite number of distinct wave fields at every surface point. Utilizing this sparsity, the presented compressive sensing approach avoids superflously large space-bandwidth products and significantly reduces the number of necessary measurements.
Prävalenz von postoperativen Delirzuständen nach Spinalanästhesie : eine prospektive Kohortenstudie
Creators: name: Köhler, Tobias
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2019
Subjects: subject: Spinalanästhesie
subject: Postoperative Phase
subject: Delirium
subject: 617.964

description: Aufgrund des demographischen Wandels werden zunehmend ältere Patienten mit spezifischen Komplikationen im Krankheitsverlauf operiert. Hierzu zählt auch das postoperative Delir, das zu einem verlängerten Krankenhausaufenthalt und einer erhöhten Morbidität und Letalität führt. Aktuell gibt es nur wenige Aussagen über postoperative Delirzustände im Aufwachraum im Hinblick auf das jeweilige Anästhesieverfahren. Ziel der vorliegenden Studie war es, die Prävalenz des frühen postoperativen und des subsyndromalen Delirs nach Spinalanästhesie zu erfassen. Die Stichprobe umfasste ein gemischtes Patientenkollektiv, welches an einem Klinikum der Schwerpunktversorgung operiert wurde. Das Delir-Screening erfolgte hierbei mittels des validierten Nu-DESC zu drei definierten Zeitpunkten. Die untersuchten Patienten zeigten im Vergleich zur Literatur eine niedrige Prävalenz des postoperativen Delirs (0,9%). Im Gegensatz zur vollen Ausprägung fanden sich einzelne Symptome (subsyndromales Delir) im Aufwachraum deutlich häufiger (16%). In einer Subgruppenanalyse mit Patienten ab 70 Jahren zeigte sich im Vergleich zur Kontrollgruppe (<70 Jahre) eine signifikant erhöhte Prävalenz des subsyndromalen Delirs (31,3% vs. 10%, p<0,05). Dieses war jedoch bei allen Patienten ohne medikamentöse Therapie innerhalb von 24 Stunden vollständig regredient. Die niedrige Prävalenz des postoperativen Delirs und vollständige Rückbildung des subsyndromalen Delirs kann durch die Reduktion der Delir-fördernden präzipitierenden Risikofaktoren bei einer Spinalanästhesie erklärt werden. Hierzu zählt der Verzicht auf eine intraoperative Sedierung, Reduktion der Flüssigkeitskarenz und weitere Unterstützung der Orientierung (bspw. Seh- und Hörhilfen).
Fostering success : the question of belongingness at the graduate level
Creators: name: Finley, Angela Michelle
Publisher: name: University of British Columbia
Year: 2014

description: This mixed methods research study explores the relationship between belongingness and academic success for graduate students from non-English speaking backgrounds (NESB). With Canadian universities diversifying student populations by drastically increasing the number of students being admitted from non-English speaking backgrounds, knowing how best to support NESB learners is of great concern to institutions, administrations, and educators. Researchers from many disciplines, particularly psychology, recognize that belongingness is an essential human need and motivation, yet it is often overlooked in education. Belongingness has been advanced as a powerful means of fostering academic success in higher education, yet in the field of Additional Language Teaching and Learning (ALTL), it is not well understood. This research can inform both educators and those involved with institutional policy enactment in ways to build stronger academic and institutional learning communities for NESB students. In this study, graduate students from both English and non-English speaking backgrounds were surveyed at a research-intensive Western Canadian university in order to better understand perceptions of belongingness, language acquisition, and academic success. NESB participants were then interviewed to gain a deeper understanding of the topic. Data from 36 survey responses and 3 interviews were gathered and interpreted through hermeneutic phenomenological approaches. The results of the study indicate that participants, particularly NESB students, perceived belongingness as an important aspect of their academic success at the graduate level. In particular, they identified that their peer to peer relationships, their relationships between students and faculty, and the classroom and campus environment all played key roles in their perceptions of belongingness. The data suggests that having a greater sense of belongingness would increase students’ feelings of happiness and satisfaction, as well as increase loyalty and allegiance to the university. This research has implications for educators and institutions concerned with inclusive education and best practices for English as a second language (ESL) and English as an additional language (EAL) students. It may also have impacts for other student populations as well, such as Aboriginal students, at-risk students, and even students from traditional or mainstream backgrounds.
Oscillations in the decay law: A possible quantum mechanical explanation of the anomaly in the experiment at the GSI facility
Creators: name: Giacosa, Francesco
name: Pagliara, Giuseppe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the deviations from the usual exponential decay law for quantum mechanical systems. We show that simple and physically motivated deviations from the Breit-Wigner energy distribution of the unstable state are sufficient to generate peculiar deviations from the exponential decay law. Denoting with $p(t)$ the survival probability, its derivative $h(t)$ shows typically an oscillating behavior on top of the usual exponential function. We argue that this can be a viable explanation of the observed experimental results at GSI Darmstadt, where the function $h(t)$ has been experimentally measured for electron capture decays of Hydrogen-like ions. Moreover, if our interpretation is correct, we predict that by measuring $h(t)$ at times close to the initial one, the number of decays per second rapidly drops to zero.
description: 7 pages, 6 figures, criticism considered, added Appendix and figures 4-5-6, in print on Quantum Matter
Low concentration of zeolite to enhance microalgal growth and ammonium removal efficiency in a membrane photobioreactor
Creators: name: Tao, Ran
name: Bair, Robert
name: Pickett, Melanie
name: Calabria, Jorge L.
name: Lakaniemi, Aino-Maija
name: van Hullebusch, Eric D.
name: Rintala, Jukka A.
name: Yeh, Daniel H.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: The aim of this work was to study the growth and nutrient removal efficiency of a mixed microalgal culture with and without the addition of low concentrations (0.5, 1, and 5 g L-1 of total liquid volume in the reactor) of natural zeolite. A control test in which only zeolite was added into a similar membrane photobioreactor was also conducted. The addition of 0.5 g L−1 zeolite to a continuously-fed membrane photobioreactor increased the microalgal biomass concentration from 0.50 to 0.90–1.17 g particulate organic carbon per L while the average ammonium removal efficiency increased from 14% to 30%. Upon microscopic inspection, microalgal cells were observed growing on the surface of zeolite particles, which indicates that zeolite can support attached microalgal growth. With higher zeolite doses (1 and 5 g L−1) inside the reactor, however, the breaking apart of added zeolite particles into finer particles dramatically increased solution turbidity, which likely was not beneficial for microalgal growth and ammonium removal due to reduced light penetration. This work shows that low doses of zeolite can be used as microcarriers to enhance microalgal biomass concentration and ammonium removal efficiency, while minimizing zeolite dose would likely reduce the turbidity effects.
Helicobacter pylori eradication therapy is not associated with the onset of inflammatory bowel disease : a case-control study
Creators: name: Rosania, Rosa
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: Helicobacter-pylori-Infektion
subject: Chronische Darmentzündung
subject: 616.33014

description: Background & Aims: A negative association between Helicobacter pylori (H. pylori) and inflammatory bowel disease (IBD) has been previously reported. There were also case reports suggesting a new onset of IBD 6-12 months after H. pylori eradication therapy. In a case-control study we investigate whether previous H. pylori eradication therapy is associated with the risk of developing IBD. Methods: IBD outpatients with both Crohn´s disease (CD) and ulcerative colitis (UC) were enrolled. Age- and sex-matched blood donors served as controls in a 1:2 fashion. Information on demographics, medical history, previous H. pylori infection and eradication therapy was recorded. Serum samples for H. pylori serology testing (anti-H. pylori-IgG and anti-CagA-IgG) were obtained. Controls that received H. pylori eradication therapy during the 12 months previous to enrollment were excluded. Results: Overall, 127 IBD patients (CD N= 90; UC N= 37) and 254 controls were enrolled. The prevalence of H. pylori infection (positive H. pylori serology and/or previous eradication) in IBD patients and controls was 11% and 23%, respectively (OR 0.4, 95% CI 0.21-0.74, p<0.003). Four patients (3%) developed IBD (3 MC and 1 CU) after receiving successful H. pylori eradication (latency 6-12 months). The rate of previous H. pylori eradication therapy in patents who successively developed IBD was lower but not statistically different from that observed in the control group (OR 0.43, 95% CI 0.14-1.29, p=0.16). Conclusions: In our study previous H. pylori eradication therapy was not associated with the onset of IBD. Whether in a subgroup of patients H. pylori eradication therapy may trigger a latent IBD cannot be excluded.
Can we understand an auxetic pion-photon transition form factor within QCD? BaBar faces Belle
Creators: name: Stefanis, N. G.
name: Bakulev, A. P.
name: Mikhailov, S. V.
name: Pimikov, A. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A state-of-the-art analysis of the pion-photon transition form factor is presented based on an improved theoretical calculation that includes the effect of a finite virtuality of the quasi-real photon in the method of light-cone sum rules. We carry out a detailed statistical analysis of the existing experimental data using this method and by employing pion distribution amplitudes with up to three Gegenbauer coefficients $a_2, a_4, a_6$. Allowing for an error range in the coefficient $a_6\approx 0$, the theoretical predictions for $γ^*γ\toπ^0$ obtained with nonlocal QCD sum rules are found to be in good agreement with all data that support a scaling behavior of the transition form factor at higher $Q^2$, like those of the Belle Collaboration. The data on $γ^*γ\toη/η'$ from CLEO and \babar are also reproduced, while there is a strong conflict with the auxetic trend of the \babar data above 10 GeV$^2$. The broader implications of these findings are discussed.
description: v4: 13 pages, 1 table, 8 figures. Paper body radically redesigned and extended to include Belle data. Contains statistical data analysis and photon small virtuality. Conclusions and references updated. V5 matches version to appear in Physical Review D
STATISTICAL EVALUATION OF THE RELATIONSHIP BETWEEN THE COMPONENTS OF COMPETITIVE SELECTION AND SUCCESS IN HIGHER MATHEMATICS OF ECONOMIC STUDENTS
Creators: name: Shevchuk Oleksandr
Publisher: name: Colloquium-journal
Year: 2021
Subjects: prognostic validity
correlation coefficient
competitive selection
competitive score
external independent evaluation (EIE)
higher education institution (HEI)

description: The paper investigates the correlations between the competition score, the external examination score in mathematics and the grades in higher mathematics of students in the branch of knowledge 07 "Management and Administration" of a particular institution of higher education. The calculated values of prognostic valid-ity indicate a fairly close linear relationship between the components of the 2018 competitive selection and the success (current and final) of freshmen in higher mathematics. Instead, for the 2019 introductory campaign, there is a downward trend in the correlation between these indicators. The most significant changes were re-lated to the current success of students in the second semester. This feature is explained by the introduction of distance learning.
Parallel algorithms for normalization
Creators: name: Boehm, Janko
name: Decker, Wolfram
name: Laplagne, Santiago
name: Pfister, Gerhard
name: Steenpass, Andreas
name: Steidel, Stefan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 13P10 (Primary) 68W10, 14B99 (Secondary)

description: Given a reduced affine algebra A over a perfect field K, we present parallel algorithms to compute the normalization \bar{A} of A. Our starting point is the algorithm of Greuel, Laplagne, and Seelisch, which is an improvement of de Jong's algorithm. First, we propose to stratify the singular locus Sing(A) in a way which is compatible with normalization, apply a local version of the normalization algorithm at each stratum, and find \bar{A} by putting the local results together. Second, in the case where K = Q is the field of rationals, we propose modular versions of the global and local-to-global algorithms. We have implemented our algorithms in the computer algebra system SINGULAR and compare their performance with that of the algorithm of Greuel, Laplagne, and Seelisch. In the case where K = Q, we also discuss the use of modular computations of Groebner bases, radicals, and primary decompositions. We point out that in most examples, the new algorithms outperform the algorithm of Greuel, Laplagne, and Seelisch by far, even if we do not run them in parallel.
description: 19 pages
W-band low-loss wafer-scale package for RFMEMS
Creators: name: Min, Byung-Wook
name: Rebeiz, Gabriel M.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: This paper reports on the design and fabrication of a wafer-scale package for RF MEMS devices atW-band. Coplanar waveguide (CPW) lines on a high resistivity silicon wafer are covered with another silicon wafer using gold-to-gold thermo-compression bonding. Oxide is used as a dielectric interlayer for CPW feedthroughs underneath the gold sealing ring. A 130 µm high cavity is etched in the cap wafer to remove an impact of capping wafer on CPW lines or RF MEMS components.The designed feedthrough has an insertion loss of 0.19−0.26 dB at 75−110GHz with a return loss of
Cytomegalievirus (CMV)-Primärinfektion und kongenitale CMV (cCMV)-Infektion in Sachsen-Anhalt
Creators: name: Greye, Hannah Dorothea
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2019
Subjects: subject: Cytomegalie
subject: Angeborene Krankheit
subject: 618.929

description: Einleitung Die kongenitale Cytomegalievirus (CMV)-Infektion stellt weltweit die häufigste nicht- impfpräventive Infektionskrankheit während der Schwangerschaft dar. Es ist die Hauptursache aller nicht-genetischen sensorineuralen Hörstörungen (SNHL). Methode Retrospektiv wurden insgesamt 8 verschiedene Datenquellen aus Sachsen-Anhalt im Zeitraum 01.01.2005-30.04.2018 ausgewertet, um die CMV-Seronegativitätsrate der Schwangeren, die CMV-IgG-Serokonversionsrate während der Schwangerschaft und die Prävalenz der CMV- Primärinfektion und der cCMV-Infektion zu bestimmen. Aus den vorhandenen Stichproben wurde zudem eine Fall-Kontroll-Studie durchgeführt im Hinblick auf signifikante Unterschiede in Geburtsparametern der infizierten Kinder und im Hinblick auf verschiedene Parameter der Mütter. Ergebnisse Die Seronegativitätsrate der Schwangeren lagen bei den herangezogenen Quellen zwischen 46 % und 54 %. Die Serokonversionsrate während der Schwangerschaft war 0,38 %. Die tatsächliche Prävalenz der cCMV-Infektion lag nach Bewertung der über- und unterschätzten Quellen zwischen 0,23 % und 2,2 %. Die CMV-Primärinfektionsrate lag bei 1,42 %. Schlussfolgerung Die Seronegativitätsrate lag im selben Bereich, der durch andere Studien in Deutschland ermittelt worden ist. Die tatsächliche Prävalenz der cCMV-Infektion lässt sich retrospektiv nicht sicher ermitteln. Durch die Auswertung der verschiedenen Quellen war eine Eingrenzung möglich.
Urban Morphology and Residential Differentiation across Great Britain, 1881–1901
Creators: name: Lan, Tian
name: Longley, Paul A.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: The nineteenth century saw rapid urbanization and dramatic social change in Great Britain, some of which can now be viewed at national scales for the first time through linkage of georeferenced digital historical data to contemporary and historical framework data. Here, we attempt to georeference every individual address record from the 1881, 1891, and 1901 censuses for Great Britain and to define the fast-growing historical street networks and residential geographies of every urban settlement. We next devise a scale-free historical geodemographic classification using variables common to these three censuses and assign cluster group characteristics to every urban street segment. We also link the evolution of the urban street morphology with changes in residential differentiation and the geodemographic assignments over the twenty-year study period. The results of this intensive data processing make it possible to chart the development of urban residential areas across Great Britain and bring focus to the changing social structures of the cities. We examine these changes with examples drawn from the entire British urban settlement system. Our conclusions discuss the implications of this extensive analysis for improved understanding of the evolution of Great Britain’s urban system.
On geometry-dependent vortex stability and topological spin excitations on curved surfaces with cylindrical symmetry
Creators: name: Carvalho-Santos, Vagson L.
name: Apolonio, Felipe A.
name: Oliveira-Neto, Nemésio M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the Heisenberg Model on cylindrically symmetric curved surfaces. Two kinds of excitations are considered. The first is given by the isotropic regime, yielding the sine-Gordon equation and $π$-solitons are predicted. The second one is given by the XY model, leading to a vortex turning around the surface. Helical states are also considered, however, topological arguments can not be used to ensure its stability. The energy and the anisotropy parameter which stabilizes the vortex state are explicitly calculated for two surfaces: catenoid and hyperboloid. The results show that the anisotropy and the vortex energy depends on the underlying geometry.
description: 10 pages, 2 figures, Accepted for publication in Phys. Lett A (2013)
METHODOLOGICAL APPROACHES TO IT PROJECT MANAGEMENT
Creators: name: Yurchuk, N.P.
Publisher: name: Colloquium-journal
Year: 2021
Subjects: project management
IT project
IT project management
Waterfall model
Agile model
Scrum model
Lean model
Kanban model
Six Sigma model
PRINCE2 model.

description: The methodological approaches of IT project management are analyzed in the article. It is determined that today experts distinguish rigid and flexible methods of project management. Rigid management methods involve the use of classical project management methods, including a cascade model, which provides strictly consistent (over time) and one-time execution of all phases of the project with rigid (detailed) pre-planning in the context of defined one-time and specific software system requirements. The WaterFall model has been found to be the most common model among software development lifecycle models. It is determined that flexible methods of project management include Agile, Scrum, Lean, Kanban, Six Sigma, PRINCE2. The flexible development methodology is based on a liberal-democratic approach to the management and organization of team work, the members of which are focused on the development of specific software. It is noted that the choice of project management methodology depends on the project objectives, requirements and conditions in which the project is implemented. The presence of various methodologies for managing IT projects, which differ in approaches to project process management, allows you to choose the model that will ensure the achievement of project objectives in conditions of limited resources, uncertainty and risk.
Vergleich der neurochirurgischen und endovaskulären Behandlung bei Patienten mit intrakraniellen Aneurysmen
Creators: name: Springer, Jan David
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: Intrakranielles Aneurysma
subject: 616.8046

description: Intrakranielle Aneurysmen kommen bei bis zu 6% der Bevölkerung vor. Die gefürchtetste Komplikation ist dessen Ruptur, die zu einer Subarachnoidalblutung mit einer Letalität von bis zu 50% führt. Für die Versorgung von inzidentellen oder rupturierten intrakraniellen Aneurysmen gilt seit Veröffentlichung der ersten ISAT-Studie 2002 die endovaskuläre Behandlung der neurochirurgischen Versorgung mittels Clip in vielerlei Hinsicht als überlegen. Am Universitätsklinikum Magdeburg (UKMD) werden jährlich mehr als 60 Patienten mit intrakraniellen Aneurysmen behandelt. Die endovaskuläre Behandlung ist am UKMD die primäre Behandlungsmethode der Wahl. Für die Jahre 2009 bis 2012 wurde die Behandlung von 241 Patienten mit intrakraniellen Aneurysmen retrospektiv untersucht. Die Untersuchung der beiden Behandlungsmethoden zeigte, dass die endovaskuläre Behandlung mit 201 Patienten gegenüber 40 operativ behandelten Patienten erwartungsgemäß wesentlich häufiger zur Anwendung kam. Der Großteil von 82,5% der operativ mittels Clip behandelten Aneurysmen befand sich an der A. cerebri media. Die Lokalisation hatte einen eindeutigen Einfluss auf die Wahl der Behandlungsmethode. Die Analyse der mRS-Ergebnisse als primärer Endpunkt zeigte keine signifikanten Unterschiede zwischen den beiden Behandlungsmethoden sowohl nach 1 als auch nach 2 Jahren. Bei Aneurysmen der A. cerebri media, die nach ursprünglicher endovaskulärer Behandlung nachbehandelt werden mussten, waren die Odds 28,5 mal höher, in dem sekundären Eingriff operativ mittels Clip behandelt zu werden. Somit kommt der operativen Behandlung bei Aneurysmen der A. Cerebri media eine eindeutig größere Bedeutung zu als bei Aneurysmen anderer Lokalisationen.
Analyse der Leberwerte nach intraarterieller Gabe von 99mTechnetium-markierten Albuminpartikeln vor selektiv interner Radiotherapie der Leber und Evaluierung dieser Werte für die Prädiktion einer Toxizität
Creators: name: Hartmann, Fabian
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: SIRT
subject: Technetium-99m
subject: Hepatotoxizität
subject: 615.842

description: Die selektiv interne Radiotherapie (SIRT) nimmt als interventionelle Therapiemodalität in der palliativen Behandlung primärer oder sekundärer Lebermalignome einen hohen Stellenwert ein. Die intraarterielle 99mTechnetium-Gabe zum Ausschluss und Quantifizierung von Lungenshunts zur Evaluation vor einer SIRT hat sich dabei als Verfahren etabliert. Primärer Endpunkt der Dissertation ist die Analyse leberspezifischer Laborparameter vor und nach intraarterieller Applikation von Technetium-99-markierten Albuminpartikeln hinsichtlich des Auftretens signifikanter Laborwertveränderungen in Vorbereitung einer SIRT. Sekundärer Endpunkt ist die Untersuchung, ob eine relevante Veränderung der leberspezifischen Laborparameter einen prädiktiven Wert für die Entwicklung einer postradioembolischen Hepatotoxizität im Sinne einer REILD (Radioembolization Induced Liver Disease) aufweist. Durch die Analyse leberspezifischer Laborparamter von 202 eingeschlossenen Patienten konnte nachgewiesen werden, dass die 99mTechnetium-MAA-Gabe zu einer vorübergehenden signifikanten Erhöhung des Bilirubinwerts führt, diese jedoch keinen prädiktiven Wert für die nachfolgende Radioembolisation und eine mögliche REILD darstellt. Risikofaktoren für eine postradioembolische Hepatotoxizität stellen in der analysierten Kohorte das Vorliegen einer Leberzirrhose sowie ein hohes Tumorvolumen dar.
Electrical and structural properties ofLow-temperature-grown in0.53Ga0.47ason GaAs using an inGaAlAs metamorphic buffer
Creators: name: Jo, Seong June
name: Ihn, Soo-Ghang
name: Kim, Tae-Woo
name: Yee, Ki-Ju
name: Hwang, Moon-Seop
name: Lee, Dong-Han
name: Song, Jong-In
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: Electrical and structural properties of low-temperature-grown In0.53Ga0.47As (LT-InGaAs) on GaAs using an InGaAlAs metamorphic buffer (M-buffer) were studied. Dependence of carrier lifetime of the LT-InGaAs on post thermal annealing was also investigated. Utilization of residual dislocation in the LT-InGaAs on the M-buffer was effective in reducing the carrier lifetime, producing the carrier lifetime of 2.14 ps that is comparable to that of the Be-doped LT-InGaAs.
A 150 to 220 GHz balanced doubler MMIC using a 50 nm metamorphic HEMT technology
Creators: name: Schwörer, C.
name: Campos Roca, Y.
name: Leuther, A.
name: Tessmann, A.
name: Seelmann-Eggebert, M.
name: Massler, H.
name: Schlechtweg, M.
name: Weimann, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: A coplanar millimeter wave doubler MMIC coveringtheentire G-band was developed. Based on a 50nm metamorphic HEMT technology, thecircuitdemonstrates an output power of morethan–12dBmbetween 150- and 220 GHz for an input powerof0dBm.Byincreasing the input power to 12 dBm an output power exceeding 0 dBm was obtained in the frequency range between 180-and 220 GHz. Good fundamental rejection was ensured by using a Marchand Balun for balancing the design.The doubler was also used to provide the LO signal for a 170 to 200 GHz resistive FET mixer, yielding a conversion loss of  10 dB.
InP DHBT-based IC technology for high-speed data communications
Creators: name: Driad, R.
name: Schneider, K.
name: Makon, R. E.
name: Lang, M.
name: Nowotny, U.
name: Aidam, R.
name: Quay, R.
name: Schlechtweg, M.
name: Mikulla, M.
name: Weimann, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: In this paper, we report the achieved performance of devices and integrated circuits (ICs) using a manufacturable InP DHBT-based technology.High speed MBE grown InGaAs/InP DHBTs with an effective emitter junction area of 4.8 µm2 exhibited peak fT and fMAX values of265and305GHz, respectively, at a collector currentdensity of 3.75 mA/µm2. Using this technology, a set of basic analog and digital IC building blocks,including lumped amplifiers, voltage controlled oscillators, multiplexers and demultiplexers, suitable for operation at 40 Gb/s and beyond, have been successfully designed and fabricated.
Exploring the coherence function for optical metrology and beyond
Creators: name: Falldorf, Claas
Publisher: name: Society of Photo‑Optical Instrumentation Engineers (SPIE)
Year: 2022
Subjects: subject: interferometry
subject: Interferometers
subject: Coherence (optics)
subject: Wavefronts
subject: Fourier transforms
subject: Optical metrology
subject: Spatial light modulators
subject: 600

description: I will report on several strategies to exploit the structure of the coherence function for optical metrology and wave field analysis in general. For the case of optical metrology, I will show that properties like the surface topology or refractive index distributions can be determined by solely investigating the coherence function of light that has previously interacted with the specimen under test. Since the coherence function can be measured by a simple shear interferometer, this suggests that a large variety of metrology tasks can be accomplished by a common-path architecture. A prime advantage of this approach is the combination of interferometric precision with inherent mechanical robustness. Furthermore, because a shear interferometer is essentially an imaging system that provides a twin-image, methods based on sensing the coherence function are very flexible and largely independent from the distance between sensor and object.
Counting matrices over finite fields with support on skew Young diagrams and complements of Rothe diagrams
Creators: name: Klein, Aaron J.
name: Lewis, Joel Brewster
name: Morales, Alejandro H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A05, 05A15

description: We consider the problem of finding the number of matrices over a finite field with a certain rank and with support that avoids a subset of the entries. These matrices are a q-analogue of permutations with restricted positions (i.e., rook placements). For general sets of entries these numbers of matrices are not polynomials in q (Stembridge 98); however, when the set of entries is a Young diagram, the numbers, up to a power of q-1, are polynomials with nonnegative coefficients (Haglund 98). In this paper, we give a number of conditions under which these numbers are polynomials in q, or even polynomials with nonnegative integer coefficients. We extend Haglund's result to complements of skew Young diagrams, and we apply this result to the case when the set of entries is the Rothe diagram of a permutation. In particular, we give a necessary and sufficient condition on the permutation for its Rothe diagram to be the complement of a skew Young diagram up to rearrangement of rows and columns. We end by giving conjectures connecting invertible matrices whose support avoids a Rothe diagram and Poincaré polynomials of the strong Bruhat order.
description: 24 pages, 9 figures, 1 table
Entwicklung und Therapieerfolge einer bausteinorientierten Eltern-Kind-Behandlung : Wirksamkeitsüberprüfung einer kinderpsychiatrischen Eltern-Kind-Station unter klinischen Routinebedingungen
Creators: name: Krause, Stefanie
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: Kinderpsychiatrie
subject: Verhaltensstörung
subject: Eltern
subject: Psychische Belastung
subject: 618.928914

description: Ziel der vorliegenden Untersuchung war die Wirksamkeitsüberprüfung einer bausteinorientierten Eltern-Kind-Behandlung im kinderpsychiatrischen Setting unter klinischen Routinebedingungen. Es wurde in einer monozentrischen Fragebogenstudie im Ein-Gruppen-Prä-Post-Design anhand einer Stichprobe von 60 Familien die kindliche Symptombelastung (CBCL) und das elterliche Stresserleben (ESF) zu fünf Zeitpunkten erhoben (von Aufnahme bis 6 Monate nach Entlassung). Erwartungsgemäß konnten in der Wartezeit bis Therapiebeginn keine bedeutsamen Veränderungen festgestellt werden, während sich im Verlauf der Behandlung die kindlichen Verhaltensauffälligkeiten und das elterliche Stresserleben signifikant reduzierten und auch nach Abschluss der Behandlung stabil blieben. Dabei zeigte sich der Therapieeffekt abhängig von der psychischen Initialbelastung auf Eltern- und Kindebene. Weiterhin hatten die Symptomdauer und der elterliche Therapiegewinn einen signifikanten Einfluss auf die Abnahme der kindlichen Verhaltensauffälligkeiten. Wartezeit, Geschlecht, Alter des Kindes und Behandlungsmodus kristallisierten sich nicht als bedeutsame Moderatoren des Behandlungserfolgs heraus. Damit schließt die vorliegende Untersuchung eine Forschungslücke zur Wirksamkeit von kinderpsychiatrischen Eltern-Kind-Stationen und liefert wichtige Implikationen für die klinische Praxis von Eltern-Kind-Behandlungen.
Exploring energy distribution of photon upconversion and downconversion luminescence in lanthanide-doped nanoparticles
Creators: name: Wang, Qiang
Publisher: name: Macquarie University
Year: 2022
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Lanthanide-doped nanoparticles exhibiting short-wavelength infrared (SWIR) luminescence have emerged as promising luminescent probes for advanced in vivo imaging with enhanced tissue penetration, sensitivity and resolution. However, a key bottleneck remains in the limited luminescence efficiency, which fundamentally stems from the complicated energy levels and transition pathways possessed by lanthanide emitters. This work aims to perform a spectroscopic study on several lanthanide-doped nanoparticles to illustrate their detailed photon transfer and energy distribution processes. A luminescence spectroscopy system is first set up, allowing characterisation of broad emission spectra spanning the ultraviolet to the SWIR region. Then, Er- and Tm-activated nanoparticles are examined, and the energy transition processes corresponding to individual characteristic emission peaks are interpreted based on their measured energy level diagrams alongside the excitation-emission relations. Finally, the influence of doping concentrations as well as additional co-dopants are investigated to explore potential approaches to regulating the energy distribution. The results obtained here may be exploited to engineer lanthanide-doped nanoparticles with concentrated SWIR emission for efficient in vivo optical imaging in the future.