cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Improving the Security-Constrained Operative Planning of Flexibilities in Distribution Grids Using Artificial Intelligence and High-Performance Grid Calculation
Creators: name: Wang, Zhenqi
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2024
Subjects: High-Performance Computing
Reinforcement Learning
Grid Congestion Management
Robust Optimization
Grid Flexibility Exploitation

description: The penetration from renewable distributed energy resources (DERs) such as wind and solar massively increases the risk of grid congestions on transmission lines/transformers and voltage violations. To guarantee grid security, the operators must perform grid congestion management (GCM), e.g., with active power curtailment from DERs in the operative planning and real-time phases. Compared to the real-time GCM, for grid operative planning, grid congestions must be identified through forecasting-based grid simulations. Distributed flexibility for GCM needs to be planned with, e.g., day-ahead load and DER forecasting. The core challenge of the process is the high computational overhead, which is addressed in this thesis. This thesis focuses on developing computational tools to improve grid operative planning. Firstly, a high-performance grid simulator with GPU acceleration is developed for the efficient evaluation of many grid statuses. The grid simulator enables the evaluation of the impact of forecasting uncertainties with probabilistic grid simulation. Secondly, a deep reinforcement learning-based Artificial Intelligence (AI) optimization approach for the grid operation is developed. The approach can perform multiple optimizations to reduce the grid operational costs, such as minimization of active power curtailment for GCM. The novelty is that the training of the AI model can be performed self-supervised with the high-performance grid simulator as well as combined with the classical supervised training approach. After training, the method achieves high optimality with significant computational performance improvement over mathematical optimization. Specifically, for the flexibility planning for GCM, the AI optimization approach is extended for active/reactive power (PQ) flexibility area estimation at the transmission system - distribution system interface (extra high voltage - high voltage transformers) with the DER flexibility of the high voltage grid. The optimization considers the robustness against forecasting uncertainties and the realistic N-1 grid security criterion as extended grid-security constraints. High computational efficiency and the simultaneous identification of corresponding DER PQ setpoints in the identified available PQ area are the highlights of the method. The proposed tools are verified with case studies and find successful applications in multiple projects and research works.
Price-Optimized heat pump operation considering LV distribution grid constraints
Creators: name: Hoffmann, Niklas Bjarne
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2024
Subjects: heat pump

description: Rising usage of heat pumps (HPs) for heating in buildings can overload lowvoltage (LV) distribution grids, threatening grid stability. The German Federal Grid Agency proposed solutions based on § 14a EnWG with reactive measures from the DSO to address overloading by reducing the power to a minimum of 4.2 kW. This study proposes a preventive control strategy for HPs integrated with Home Energy Management Systems (HEMS). The objective is to minimize household electricity costs while preventing overloading through time-dependent power reductions. Unlike most existing solutions, this approach proactively reduces HP power consumption based on predicted grid load. Simulations were conducted using a combination of tools (pandapower, microSCOPE, pandaprosumer) to evaluate the effectiveness of the proposed control strategy. The simulations compared scenarios with and without the control strategy, considering different HP sizes, thermal storage sizes, and sensitivity analysis. The results demonstrate the functionality of the preventive control strategy in reducing transformer overloading. However, the effectiveness is limited during long periods with particularly low temperatures. Also, it is influenced by factors such as HP size relative to building heat load and thermal storage capacity. Further research is needed to generalize the findings and include more factors.
Auslegung und Erprobung einer induktiven Erwärmungsvorrichtung zum Ausschmelzen von Großsprengmitteln verschiedenster Durchmesser und Wandstärken
Creators: name: Dam Van, Philipp Duc
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2023
Subjects: induktive Erwärmung
Bomben
Großsprengmittel

description: In der Arbeit geht es darum, das Recycling von Bomben durch einen neuen Ansatz schneller und effizienter zu machen. Bisher wird die Hülle des Sprengkörpers in meh­rere Abschnitte gesägt und anschließend hydraulisch ausgepresst. Ein neuer Ansatz zum Auslösen besteht im Erwärmen des Sprengmittels. Dazu muss die Hülle nur ein­mal gesägt werden, wodurch sich der zeitliche Aufwand zum Trennen deutlich verrin­gert. Der Sprengstoff ist bei Umgebungstemperatur in einem festen Zustand. Erfolgt eine Erwärmung bis auf eine Temperatur von ca. 80 °C, tritt eine Verflüssigung ein und der Sprengstoff kann aus der Altmunition ausgelöst werden. Die benötigte Wärmemen­ge kann dabei durch ein Induktionsverfahren in das Material eingebracht werden. Bei dem induktiven Vorgang wird mit einem Induktor ein Wirbelstrom in die Bombenwand induziert. Die Wechselwirkung des Magnetfeldes mit dem ferritischen Wandungsma­terial führt zur Erwärmung der Hülle und durch Wärmeleitungsprozesse schlussend­lich zur Erwärmung des Sprengstoffes. Dadurch wird eine Änderung des Aggregatzu­standes von fest zu flüssig erzielt. Ist die ganze Bombe erwärmt, gleitet der Spreng­stoff aus der geteilten Bombe heraus. Aus Sicherheitsgründen ist dabei unbedingt sicherzustellen, dass der Sprengstoff nicht überhitzt. Bei der Überschreitung der Maximaltemperatur kann es zu einer spon­tanen Selbstentzündung und infolgedessen zur Explosion des Sprengmittels kom­men. Das Ziel der Arbeit ist daher, das Verhalten der Bombenhülle beim Anlegen einer Induktionsspannung mit variierenden Prozessparametern abzuschätzen und damit ei­ne effiziente und sichere Behandlung des Gefahrstoffs gewährleisten zu können.
Matched slow optical soliton pairs via biexciton coherence in quantum dots
Creators: name: Yang, Wen-Xing
name: Chen, Ai-Xi
name: Lee, Ray-Kuang
name: Wu, Ying
Publisher: name: Swinburne
Year: 2024

description: We theoretically investigate the simultaneous formation and stable propagation of slow optical soliton pairs in semiconductor quantum dots with a four-level biexciton-exciton cascade configuration. Owing to the destructive interference set up by two continuous wave control fields that couple to a biexciton state, the linear as well as nonlinear dispersion can be dramatically enhanced simultaneously with the absorptions of two weak probe fields being almost suppressed. These results reveal that the detrimental distortions of the two weak-pulsed probe fields due to dispersion effects can be well balanced by the self-phase modulation effect under very low input light intensity, which leads to the slow temporal optical soliton pairs with matched group velocity and amplitude. We also show that the propagation of slow optical solitons can be strongly modified by the biexciton coherence.
Entwicklung feinskaliger 1-3-Piezokomposite für hochfrequente Ultraschallwandler
Creators: name: Günther, Paul A.
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2021
Subjects: Ultraschallwandler
1-3-Piezokomposite
Soft-Mold-Verfahren
PZT
FEM

description: Die vorliegende Arbeit beschäftigt sich mit der Entwicklung hochfrequenter Ultraschallwandler auf der Basis feinskaliger 1-3-Piezokomposite. Die Herstellung der Komposite erfolgt über das am Fraunhofer IKTS entwickelte Soft-Mold-Verfahren, welches die Erhöhung der Betriebsfrequenz der Ultraschallwandler durch die Umsetzbarkeit variabler lateraler Kompositlayouts mit besonders kleinen Strukturgrößen ermöglicht.
Fundamental mechanics: from classical mechanics to quantum mechanics and its application on quantum chemistry
Creators: name: Liu, Huan
Publisher: name: Jiangxi Province ChengZhu Environmental Engineering Company Ltd
Year: 2025

description: 2025. Copyrights Certificate Registered by Brock Chain Technology: Brock Chain ID. (c18f54faa3b579c3e7d1662156cc05cfb68406edf0249abc87cf937f610963c8); Register Time: 2025-04-28 12:29.

The originality of all the materials have been tested by Turnitin test tool before it is available online.

All rights reserved.

This research project is formally registered via Open Science Framework (OSF) Registry, with registration DOI: https://doi.org/10.17605/OSF.IO/KRPC3
L'approche territorialisée intersectionnelle : repenser l'itinérance et la pauvreté des femmes à Moncton
Creators: name: Bourque, Mélanie-Ève
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2012
Subjects: Gouvernance
précarité
femmes
Moncton

description: Cette thèse est une réflexion sur l’itinérance et la pauvreté des femmes, notamment celles du Grand Moncton. Par l’entremise de onze organismes communautaires qui travaillent auprès des moins nantis du Grand Moncton et par l’entremise de cinq femmes en situation de précarité, nous tenterons de démontrer qu’il est favorable pour ces organismes, d’utiliser l’expérience de ces femmes afin d’approcher le problème de la pauvreté dans la région et d’améliorer leurs services. En incluant la voix et l’expérience des femmes en situation de précarité au processus de discussion, nous comprenons davantage le phénomène de la pauvreté chez les femmes du Grand Moncton. En d'autres mots, puisque ces femmes possèdent un savoir et une connaissance particulière, elles sont perçues comme des experts, car elles vivent en situation de précarité quotidiennement, faisant d’elles des acteurs très importants dans la gestion de l’itinérance et de la pauvreté chez les femmes.
Both Forest Harvesting and Hydropower Dams Yielded Negative Impact on Low Flow Regimes in the Zagunao River Watershed, Southwest China
Creators: name: Jiang, Zhiwei
name: Zhang, Mingfang
name: Hou, Yiping
Publisher: name: Multidisciplinary Digital Publishing Institute
Year: 2020

description: Forest harvesting and hydropower dams can significantly affect flow regimes (magnitude, timing, duration, frequency, and variability), resulting in changes in degraded aquatic ecosystems and unstable water supply. Despite numerous studies on the effects of forest harvesting on mean flows, the impact of forest harvesting on flow regimes has been less investigated. A great difficulty lies in separating the hydrological effect of forest harvesting from that of climate variability and other watershed disturbances such hydropower dams. In this study, the Upper Zagunao River watershed (2242 km2) was selected as an example to provide a quantitative assessment of the effects of forest harvesting and hydropower dams on low flow regimes. The key findings include: (1) Forest harvesting led to a significant reduction in the magnitude and return period of low flows, and a significant increment in the variability and duration of low flows; (2) the recovery of low flow regimes occurred 40 years after forest harvesting as forest recovery processed; and (3) hydropower dams caused significant impact on all components of low flow regimes, e.g., a reduction in the magnitude, return period, and timing of low flows, and an increment in the variability and duration of low flows. Our findings highlight the negative impact of both forest harvesting and hydropower dams on low flow regimes in the Upper Zagunao River watershed. A watershed management strategy for offsetting the negative effect of hydropower dams on low flow regimes by restoring hydrological functions of subalpine forests is highly recommended in subalpine watersheds of the Upper Yangtze River.
Supplementary document for Eigenvalue calibration method for dual rotating-compensator Mueller matrix polarimetry - 5388803.pdf
Creators: name: Sheng, Sheng
name: Chen, Xiuguo
name: Chen, Chao
name: Zhuang, Jinfeng
name: Wang, Cai
name: Gu, Honggang
name: Liu, Shiyuan
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplement 1
A square-law multiplier.
Creators: name: Rimawi, Isam H.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1963
Subjects: subject: Engineering, Electronics and Electrical.

description: A review of analog multipliers is given, and a description with the experimental work done on a square-law multiplier has been included in this thesis. The described square-law multiplier can be used with the system that utilizes the correlation principle in measuring noise from electrical elements (e.g. p-n junctions). The multiplier has an accuracy of the order of 1%, a bandwidth of the order of 1 Mc, a drift in the vicinity of 10 mv in eight hours, and an input range of about one volt peak to peak.
Cost Attributable to Hospital-acquired Clostridium difficile infection (CDI)
Creators: name: Choi, Kelly Baekyung
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: Hospital-acquired Clostridium difficile infection (CDI)
Hospital cost
Time-varying analysis
Attributable cost
Clostridium difficile infection

description: Introduction: Clostridium difficile infection (CDI) is a common hospital-acquired infection and a financial burden on the healthcare system. There is a need to reduce its impact on patients and the entire health system. More accurate estimates of the financial impact of CDI will assist hospitals in creating better CDI reduction strategies with limited resources. Previous research has not sufficiently accounted for the skewed nature of hospital cost data, baseline patient mortality risk, and the time-varying nature of CDI. Objective: We conducted a retrospective cohort study to estimate the cost impact of hospital-acquired CDI from the hospital perspective, using a number of analytical approaches. Method: We used clinical and administrative data for inpatients treated at The Ottawa Hospital to construct an analytical data set. Our primary outcome was direct costs and our primary exposure was hospital-acquired CDI. We performed the following analyses: Ordinary least square regression and generalized linear regression as time-fixed methods, and Kaplan-Meier survival curve and Cox regression models as time-varying methods. Results: A total of 49,888 admissions were included in this study (mean (SD) age of 64.6 ± 17.8 years, median (IQR) baseline mortality risk of 0.04 (0.01-0.14)). 360 (0.73%) patients developed CDI. Estimates of incremental cost due to CDI were substantially higher when using time-fixed methods than time-varying methods. Using methods that appropriately account for the time-varying nature of the exposure, the estimated incremental cost due to CDI was $8,997 per patient. In contrast, estimates from time-fixed methods ranged from $49,150 to $55,962: about a six fold difference. Conclusion: Estimates of hospital costs are strongly influenced by the time-varying nature of CDI as well as baseline mortality risk. If studies do not account for these factors, it is likely that the impact of hospital-acquired CDI will be overestimated.
Chiesa cattolica, libertà di religione e pace nel mondo
Creators: name: Coppola, Raffaele
Publisher: name: Stato, Chiese e pluralismo confessionale
Year: 2011

description: SOMMARIO: 1. Premessa, Chiesa cattolica e libertà di religione – 2. Ruolo della suggestione di Assisi e degli altri incontri mondiali per la pace – 3. La libertà religiosa come strumento al servizio della pace ed il principio di non ingerenza. La pace nella visione dell’ONU e della Chiesa cattolica (brevi cenni) – 4. Lo status della Terra Santa e l’incerto processo di pace fra israeliani e palestinesi - 5. Bilancio dell’attività della Conférence permanente des Villes historiques de la Méditerranée nell’area israelo-palestinese con particolare riferimento alla città di Betlemme.
description: Stato, Chiese e pluralismo confessionale, 2007: 28 febbraio
Poussière d'étamines : Étude et réflexions sur l'ontologie sociale de Novalis
Creators: name: Perron, Ève-Lyne
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Romantisme
Novalis
Hardenberg
ontologie sociale
holisme
individualisme

description: Cette thèse de maîtrise fait lumière sur les fondements socio-ontologiques de la pensée politique de Friedrich von Hardenberg (Novalis). Nous posons deux questions spécifiques : 1. Qui sont les agents de la réalité sociale dans les textes Amour et Foi et Europe ou la Chrétienté ? et 2. Suivant la réponse à la première question, Novalis défend-il un individualisme, un holisme horizontal ou un holisme vertical? Pour répondre, nous parcourons trois étapes : 1. Nous reconstruisons l’argumentation des deux textes politiques susmentionnés, 2. Nous interprétons l’ontologie générale de Novalis sur la base de la littérature secondaire et 3. Nous répondons à nos deux questions de recherche. En quelques mots, nous avons déterminé que les agents de la réalité sociale sont des individus connectés. Nous soutenons, dès lors, que la pensée politique de Novalis se base sur un holisme horizontal. This master’s thesis sheds light on the socio-ontological fundaments of Friedrich von Hardenberg’s political thought (Novalis’s). We ask two specific questions: 1. Who are the agents of social reality in the texts Love and Faith and Europe or Christianity? and 2. Following the answer to the previous question, does Novalis defend an individualism, a horizontal holism or a vertical holism? To answer, we follow three steps: 1. We reconstruct the argumentation of the two aforementioned texts, 2. We interpret Novalis’s general ontology on the basis of secondary literature, and 3. We answer our two research questions. In a few words, we were able to determine that the agents of social reality are connected individuals. We thus contend that Novalis’s political thought is based on a horizontal holism. Diese Masterarbeit wirft Licht auf die sozialontologischen Fundamente des Denkens Friedrich von Hardenbergs (Novalis). Wir stellen zwei spezifische Fragen: 1. Wer sind die Handelden der sozialen Wirklichkeit in den texten Glauben und Liebe und Christenheit oder Europa? und 2. Auf der vorherigen Frage aufbauend, verteidigt Novalis einen Individualismus, einen horizontalen Holismus oder einen vertikalen Holismus? Um zu antworten, folgen wir drei Schritten: 1. Wir rekonstruieren die Argumentation der obengenannten Texte, 2. Wir interpretieren die allgemeine Ontologie Novalis‘ aufgrund der Sekundärliteratur und 3. Wir beantworten unsere beiden Fragen. In wenigen Worten: wir haben festgestellt, dass die Handelden der sozialen Wirklichkeit miteinander verbundene Individuen sind. Deshalb behaupten wir, dass Novalis‘ politische Denken auf einem horizontalen Holismus aufbaut.
Le garanzie della laicità civile e della libertà religiosa nella tensione fra globalismo e federalismo
Creators: name: Domianello, Sara
Publisher: name: Stato, Chiese e pluralismo confessionale
Year: 2011

description: Relazione al Convegno su “Federalismo fiscale, principio di sussidiarietà e neutralità dei servizi sociali erogati. Esperienze a confronto” (Ravenna, 4 – 6 maggio 2006), destinato alla pubblicazione negli Atti.SOMMARIO: 1. Il tipo di «bene» in gioco e la dose di intervento pubblico che serve a correggerne e sostenerne il «mercato» - 2. Supporti teorici, obiettivi reali e costi delle riforme che nell’ultimo ventennio ne hanno condizionato la «fornitura» in Italia - 3. Quali «materie prime» occorrono per produrre laicità civile e libertà religiosa, dove se ne trovano i giacimenti e quale ampiezza ha il mercato interessato a procurarsele.
description: Stato, Chiese e pluralismo confessionale, 2007: 28 febbraio
Engineering properties and applications of recycled brick rubble
Creators: name: Aatheesan, Thurairatnam
Publisher: name: Swinburne
Year: 2024

description: Recycling and reuse of waste materials is a topic of global concern and of great international interest. The urgent need for recycling is driven mainly by environmental considerations, due to the increase scarcity of natural resources and the increasing cost of land fill in most countries. Construction and demolition (C&D) materials are generated by regeneration of infrastructure such as demolition activities of buildings and construction activities of tunnels and roads. Recycled crushed brick, crushed concrete, crushed basaltic rock are viable substitute materials for natural construction materials in engineering applications such as pavement subbase and other road construction applications. This study focuses on the applicability of crushed brick blends with crushed concrete and crushed basaltic rock in pavement subbase material as well as bedding and backfill material for drainage systems. Construction and demolition materials account for a major proportion of the waste materials present in landfills in Australia. Crushed concrete and crushed brick are major components of demolition materials in Australia. Crushed rock used in this study originates from 'basalt floaters' or surface excavation rock (basalt) which commonly occurs near the surface to the north and west of Melbourne, Australia. The materials for the experimental works were collected from a recycling facility in Victoria, Australia The engineering characteristics of various proportions of crushed brick blends with crushed concrete and crushed rock, obtained from an extensive laboratory testing include high level tests such as static triaxial tests and repeat load triaxial tests are presented in this study. Finite element modelling on pavement application was done by using finite element program 'PLAXIS'. The engineering properties obtained were compared with existing local road authority specifications for pavement subbase or light duty base material and backfill material for drainage systems to ascertain the potential use of crushed brick blends. The research indicates that initially up to 25 % of crushed brick could be safely added to crushed concrete and crushed rock as pavement subbase material. Depending on the results of field trials, it may be possible to increase the percentage of crushed brick added in the future.
Garanzie di libertà e di uguaglianza per i singoli e le confessioni religiose, oggi in Italia
Creators: name: Lariccia, Sergio
Publisher: name: Stato, Chiese e pluralismo confessionale
Year: 2011

description: Destinato alla pubblicazione nel prossimo numero della rivista Critica liberale
delle Edizioni Dedalo.
description: Stato, Chiese e pluralismo confessionale, 2007: 28 febbraio
Evaluation of Current Therapies for COVID-19 Treatment
Creators: name: Sethi, Atin
name: Bach, Horacio
Publisher: name: Multidisciplinary Digital Publishing Institute
Year: 2020

description: The virus SARS-CoV-2, the etiological agent of COVID-19, is responsible for more than 400,000 deaths worldwide as of 10 June 2020. As a result of its recent appearance (December 2019), an efficacious treatment is not yet available. Although considered a lung infection since its emergence, COVID-19 is now causing multiple organ failure, requiring a continuous adjustment in the procedures. In this review, we summarize the current literature surrounding unproven therapies for COVID-19. Analyses of the clinical trials were grouped as chemotherapy, serotherapy, anticoagulant, and the use of human recombinant soluble ACE2 therapies. We conclude that, while no agent has hit the threshold for quality of evidence to demonstrate efficacy and safety, preliminary data show potential benefits. Moreover, there is a possibility for harm with these unproven therapies, and the decision to treat should be based on a comprehensive risk–benefit analysis.
Educazione religiosa e tutela del minore nella famiglia
Creators: name: Lo Giacco, Maria Luisa
Publisher: name: Stato, Chiese e pluralismo confessionale
Year: 2011

description: Relazione, ampliata e corredata delle note, tenuta al Simposio “Edukacja
całożyciowa – źródła, koncepcje, praktyka” svoltosi presso l’Università di Stettino (Polonia) il 10 maggio 2006, e destinata alla pubblicazione negli Atti.SOMMARIO: 1. Educazione religiosa e diritti dei genitori: le norme costituzionali e le richieste delle religioni - 2. Educazione religiosa del minore, crisi della famiglia ed affidamento dei figli - 3. Ipotesi di conflitto tra diritto-dovere dei genitori all’educazione religiosa dei propri figli e tutela del diritto alla salute dei minori: i trattamenti sanitari - 4. Educazione religiosa familiare e tutela della libertà religiosa dei minori nelle scuole: la questione dei simboli religiosi.
description: Stato, Chiese e pluralismo confessionale, 2007: 28 febbraio
title: Введение в разработку объектно-ориентированных приложений на С++. Курсовое проектирование
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2024

description: В учебном пособии рассматриваются понятия и этапы разработки приложения на языке С++. Простыми примерами сопровождаются базовые принципы объектно-ориентированного программирования, такие как инкапсуляция, наследование и полиморфизм. Задание на курсовое проектирование включает использование агрегации и композиции объектов различных классов, а также шаблонных классов библиотеки STL (vector, list, set, stack, queue). Моделирование программных средств осуществляется на языке UML c применением диаграмм вариантов использования, классов и компонентов. Требования к документированию разработки соответствуют требованиям к курсовым проектам ПГУ. Подготовлено в соответствии с требованиями Федерального государственного образовательного стандарта высшего образования. Учебное пособие предназначено для студентов, обучающихся по укрупненной группе специальностей и направлений подготовки высшего образования «Информатика и вычислительная техника», изучающих дисциплины «Объектно-ориентированное программирование», «Основы алгоритмизации и программирования», «Программирование», «Программирование на языках С-семейства», «Динамические структуры данных».
Aufbau und Inbetriebnahme einer Anlage zur kontinuierlichen Hydrodeoxygenierung im Labormaßstab
Creators: name: Harms, Christin
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2022
Subjects: Kreislaufwirtschaft
Klimapolitik
Wasserstoff
Flugzeugtreibstoff

description: Kreislaufwirtschaft und nachhaltige Produktion sind wichtige Interessen von Industrie und For-schung, um aktuelle Klimaziele zu erreichen. Daher wurde während dieser Masterarbeit ein bestehendes Festbettreaktorsystem umgebaut und um einen Kreisgasstrom für Wasserstoff ergänzt. Aufgebaut wurde so eine Anlage zur kontinuierlichen Hydrodeoxygenierung, die im Rahmen des EU Projektes HIGFLY dazu dienen soll, Sauerstoff aus zyklischen Komponenten zu entfernen und diese in nachhaltigem Flugzeugtreibstoff einsetzen zu können. Zur Inbetriebnahme wurde die Anreicherung von Verunreinigungen im Kreisgasstrom zunächst in einigen Versuchen nur mit Gasen untersucht und die Anlage auf Dichtigkeit überprüft. Anschließend wurde die eigentliche Hydrodeoxygenierung mit einem Nickelkatalysator zunächst mit der Modellkomponente 2-Undecanon und anschließend mit einem Gemisch aus Produkten der Selbstkondensation von Cyclopentanol durchgeführt. Auf Basis der durchgeführten Versuche konnten die Einflüsse von Temperatur, Druck, Wasserstoffüberschuss und Raumgeschwindigkeit auf die Hydrodeoxygenierung ermittelt und erfolgreich bereits erste für den Einsatz in Flugzeugtreibstoff geeignete Produkte hergestellt werden. Auch die Eignung der Anlage für einen kontinuierlichen Betrieb konnte mit einem Langzeitversuch über fast 80 Stunden nachgewiesen werden.
Synthesis and Evaluation of Photocatalytic Properties of BiOBr for Wastewater Treatment Applications
Creators: name: Ahmad, Ayla
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: Photocatalysis
surface reaction
visible light driven photocatalyst
wastewater treatment
disinfection
advanced oxidation
novel photocatalyst

description: Visible light-driven photocatalysis has shown considerable potential in the area of clean and renewable energy, as well as in wastewater treatment. This thesis describes the synthesis, characterization and applicability of a visible-light active photocatalyst, bismuth oxybromide (BiOBr). The photocatalytic activity of BiOBr was investigated through its preparation via hydrothermal and solvothermal synthesis routes under various conditions. Hydrothermal catalyst was prepared using non template based method while for solvothermal synthesis CTAB was used as a template. Parameters of temperature and time of thermal treatment were optimized for each synthesis method and overall tests for catalyst dosage and recyclability were performed. An overall optimal route leading to high photocatalytic performance was also proposed based on the obtained results. Studies were also conducted to examine the applicability of optimally synthesized BiOBr in drinking water applications by studying catalyst-mediated disinfection of E. coli and degradation of phenol. Favourable results were obtained, confirming the prospective application of BiOBr as a viable photocatalyst for disinfection. Furthermore, the potential of enhancing BiOBr to further improve its performance is described through synthesis of a novel PdCl2/BiOBr based photocatalyst. Overall, the performance of BiOBr under various conditions in this study establishes its potential as a holistic photocatalyst and merits further development.
Vorgehensmodell zur Entwicklung und Herstellung von Dünnschichtsensoren für Produktionswerkzeuge
Creators: name: Schott, Anna
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2025
Subjects: Dünnschichtsensor
Vorgehensmodell
Produktentwicklung
Beschichtung
Produktionswerkzeuge

description: Der Einsatz von Dünnschichtsensoren für eine wirkstellennahe Prozessdatenerfassung in der Produktion eröffnet zahlreiche Anwendungsmöglichkeiten. Diese reichen von der Prozessüberwachung und -steuerung bis hin zur KI-basierten Qualitätsvorhersage von Produktzuständen, die im Rahmen von digitalisierten, intelligenten und selbstoptimierenden Fertigungsprozessen erforderlich sind. In diesem Zusammenhang spielen die Entwicklung und Herstellung von tribologisch hochbelastbaren Dünnschichtsensoren für Produktionswerkzeuge eine wichtige Rolle. Das Ziel dieser Arbeit ist es, einen theoretischen, strukturierten Rahmen bereitzustellen, der die verschiedenen Phasen des Entwicklungsprozesses von Dünnschichtsensoren für Produktionswerkzeuge klar definiert und koordiniert. Vor diesem Hintergrund wurde ein Vorgehensmodell für die Entwicklung und Herstellung von Dünnschichtsensoren zur Verbesserung der Transparenz und Reproduzierbarkeit der Sensorqualität entwickelt. Das Modell integriert fünf Lösungsmodule - Systemanalyse, Systemstruktur, Sensorgestaltung, Sensorherstellung und Sensorcharakterisierung - in einem auf dem V-Modell basierenden Bezugsrahmen.
Spreading fictions: distributing stories in the online age
Creators: name: Given, Jock
name: McCutcheon, Marion
name: Hancock, Matthew
Publisher: name: Swinburne
Year: 2024

description: The panel discussed online video in Australia, presenting early results from an ARC-funded project supported by the ABC and Screen Australia. The central research question is: 'How do Australians get their audiovisual stories and how might they get them in the future?' Responding to the increased emphasis on audiences and distribution in government policy about audiovisual media, the goal is to quantify the changing ways Australians are watching and engaging with audiovisual stories.
Semi-log-convexity of ${\rm M}/{\rm M}/\infty$ queues on $\mathbb{Z}_+$
Creators: name: Chen, Huige
name: Li, Huaiqian
Publisher: name: arXiv
Year: 2025
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We solve the problem left in the recent paper by N. Gozlan et al [Potential Analysis 58, 2023, 123--158], establishing the semi-log-convexity of semigroups associated with ${\rm M}/{\rm M}/\infty$ queuing processes on the set of non-negative integers. Our approach is global in nature and yields the sharp constant.
description: 7 pages
title: The fingerprint of the summer 2018 drought in Europe on ground-based atmospheric CO2 measurements
title: The fingerprint of the summer 2018 drought in Europe on ground-based atmospheric CO2 measurements
titleType: AlternativeTitle
Creators: name: Ramonet, Michel
name: Ciais, Philippe
name: Apadula, F.
name: Meinhardt, Frank
Publisher: name: My University
Year: 2020

description: During the summer of 2018, a widespread drought developed over Northern and Central Europe. The increase in temperature and the reduction of soil moisture have influenced carbon dioxide (CO2) exchange between the atmosphere and terrestrial ecosystems in various ways, such as a reduction of photosynthesis, changes in ecosystem respiration, or allowing more frequent fires. In this study, we characterize the resulting perturbation of the atmospheric CO2 seasonal cycles. 2018 has a good coverage of European regions affected by drought, allowing the investigation of how ecosystem flux anomalies impacted spatial CO2 gradients between stations. This density of stations is unprecedented compared to previous drought events in 2003 and 2015, particularly thanks to the deployment of the Integrated Carbon Observation System (ICOS) network of atmospheric greenhouse gas monitoring stations in recent years. Seasonal CO2 cycles from 48 European stations were available for 2017 and 2018. Earlier data were retrieved for comparison from international databases or national networks. Here, we show that the usual summer minimum in CO2 due to the surface carbon uptake was reduced by 1.4 ppm in 2018 for the 10 stations located in the area most affected by the temperature anomaly, mostly in Northern Europe. Notwithstanding, the CO2 transition phases before and after July were slower in 2018 compared to 2017, suggesting an extension of the growing season, with either continued CO2 uptake by photosynthesis and/or a reduction in respiration driven by the depletion of substrate for respiration inherited from the previous months due to the drought. For stations with sufficiently long time series, the CO2 anomaly observed in 2018 was compared to previous European droughts in 2003 and 2015. Considering the areas most affected by the temperature anomalies, we found a higher CO2 anomaly in 2003 (+3 ppm averaged over 4 sites), and a smaller anomaly in 2015 (+1 ppm averaged over 11 sites) compared to 2018. © 2020 The Author(s)
Using the International Classification of Function, Disability and Health (ICF) to Compare Areas of ANCA-Associated Vasculitits (AAV) Measured in Clinical Trials to those Important to Patients with AAV and Clinicians who are Involved in their Care
Creators: name: Milman, Nataliya
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Outcomes research
Patient reported outcomes
OMERACT
International Classification of Function, Disability and Health
ANCA-Associated Vasculitis

description: Background: The International Classification of Function, Disability and Health (ICF) describes health using 1424 categories from 4 components: body functions (BF), body structures (BS), activities and participation (AP) and contextual factors (environmental (EF) and personal (PF)). In this study the ICF was used to describe and compare aspects of ANCA-Associated Vasculitis (AAV) measured in clinical trials and those important to clinicians and patients. Methods: Individual interviews and focus groups were used to capture the perspective of AAV patients. Clinicians’ perspective was obtained with an email-based questionnaire. Outcomes used in AAV randomized trials were extracted from results of a systematic review of literature. Identified concepts were mapped to the ICF according to previously published ICF linking rules, and the resulting lists of relevant AAV outcomes were compared descriptively. Results: Twelve individual interviews and 2 focus groups represented the patient perspective while responses from 27 clinicians yielded the clinicians’ perspective. Systematic literature review identified 67 clinical trials and 28 abstracts from which measured outcomes were extracted. All three perspectives demonstrated detailed coverage of ICF components BF and BS. In the component AP patients and clinicians identified similar ICF categories, a number of which were under-sampled by AAV trials. Contextual factors appear to be significantly more relevant to patients than clinicians and researchers. Conclusion: Patients and clinicians have different views of the relevance of various AAV outcomes, and these views differ from what is measured in clinical trials of AAV. This highlights the need for a broad and standardized approach to developing and selecting outcomes for complex medical conditions such as AAV.
Bivalvia LINNAEUS 1758
Creators: name: Powell, Charles L.
name: Ii
name: Millard, Cheryl D.
name: Garcia, Christine
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia

description: BIVALVIA LINNAEUS, 1758
OSTREOIDA FERUSSAC, 1822
description: Published as part of Powell, Charles L., Ii, Millard, Cheryl D. & Garcia, Christine, 2020, A new Lyropecten (Pectinidae, Bivalvia, Mollusca) from the central California Miocene, USA, pp. 1-12 in PaleoBios 37 on page 2, DOI: 10.5070/P9371047813
Entwurf und Validierung eines modellprädiktiven Energiesystemreglers mittels Simulatorkopplung
Creators: name: Patsch, Jonas
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2022

description: Die vorliegende Arbeit befasst sich mit dem Entwurf einer modellprädiktiven Regelung für ein Gebäudeenergiesystem, welches im Wesentlichen aus einer Wärmepumpe, einem Pufferspeicher und einem Gaskessel besteht. Zu Beginn (Kapitel 2 und 3) wird der Aufbau des Systems vorgestellt und eine Modellierung sowie Parametrierung der einzelnen Systemkomponenten vorgenommen. Das Kapitel 4 widmet sich dem Entwurf des modellprädiktiven Reglers und einer konventionell gebräuchlichen Referenzregelung für einen Vergleich der Simulationsergebnisse. Im letzten Teil der Arbeit wird das Regelstreckenmodell mithilfe der Modelica Buildings Library in Dymola entworfen, anschließend in Matlab/Simulink eingebunden und mit beiden Regelstrategien simuliert. Durch diese Vorgehensweise wurde einerseits die Funktion des modellprädiktiven Reglers bestätigt. Andererseits konnte ein ähnliches Verhalten der Komponentenmodelle des modellierten Heizungssystems zum Dymola-Modell nachgewiesen werden. Entgegen der Erwartungen zeigte ein Vergleich der über das Jahr entstehenden Heizkosten kein nennenswertes Einsparpotential bei Verwendung eines modellprädiktiven Reglers im Vergleich zur Referenzregelung.
Integrated Tactical-Operational Supply Chain Planning with Stochastic Dynamic Considerations
Creators: name: Fakharzadeh-Naeini, Hossein
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2011
Subjects: Supply chain
Dynamic Planning
Stochastic dynamic system

description: Integrated robust planning systems that cover all levels of SC hierarchy have become increasingly important. Strategic, tactical, and operational SC plans should not be generated in isolation to avoid infeasible and conflicting decisions. On the other hand, enterprise planning systems contain over millions of records that are processed in each planning iteration. In such enterprises, the ability to generate robust plans is vital to their success because such plans can save the enterprise resources that may otherwise have to be reserved for likely SC plan changes. A robust SC plan is valid in all circumstances and does not need many corrections in the case of interruption, error, or disturbance. Such a reliable plan is proactive as well as reactive. Proactivity can be achieved by forecasting the future events and taking them into account in planning. Reactivity is a matter of agility, the capability of keeping track of system behaviour and capturing alarming signals from its environment, and the ability to respond quickly to the occurrence of an unforeseen event. Modeling such a system behaviour and providing solutions after such an event is extremely important for a SC. This study focuses on integrated supply chain planning with stochastic dynamic considerations. An integrated tactical-operational model is developed and then segregated into two sub-models which are solved iteratively. A SC is a stochastic dynamic system whose state changes over time often in an unpredictable manner. As a result, the customer demand is treated as an uncertain parameter and is handled by exploiting scenario-based stochastic programming. The increase in the number of scenarios makes it difficult to obtain quick and good solutions. As such, a Branch and Fix algorithm is developed to segregate the stochastic model into isolated islands so as to make the computationally intractable problem solvable. However not all the practitioners, planners, and managers are risk neutral. Some of them may be concerned about the risky extreme scenarios. In view of this, the robust optimization approach is also adopted in this thesis. Both the solution robustness and model robustness are taken into account in the tactical model. Futhermore, the dynamic behaviour of a SC system is handled with the concept of Model Predictive Control (MPC).
Parameters Affecting the Blast Performance of High Strength Fibre Reinforced Concrete Beams
Creators: name: Algassem, Omar
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2016
Subjects: Dynamic Test
Static Test
Steel fibre
Steel reinforcement ratio
Concrete type

description: A limited number of studies have been conducted in the literature in order to investigate the behaviour of high-strength fibre-reinforced concrete (HSFRC) structural components subjected to blast loads. This study summarizes the results of a research program investigating the potential of using steel fibres to improve the blast performance of high-strength reinforced concrete beams. As part of the experimental investigation twenty beams were tested, including nine beams tested under static four-point bending, and eleven beams tested under dynamic blast loads using a shock-tube. Parameters considered in the study include the effect of concrete strength, steel fibres, fibre content, fibre type, longitudinal reinforcement ratio, and presence of shear reinforcement. All beams in the study have identical dimensions, with a cross-section of 125 x 250 mm and length of 2440 mm. To manufacture the specimens, two beams were cast with normal-strength self-consolidate concrete (SCC), with a specified strength of 50 MPa, while the remaining beams were cast with either plain or fibre-reinforced high-strength concrete having a compressive strength which varied between 95-110 MPa. The steel fibre content in the HSFRC beams varied between 0.5 and 1.0%, by volume of concrete. To investigate the effect of reinforcement ratio (ρ), the beams were reinforced with 2-#4 (American size) bars, 2-15M bars or 2-20M bars (ρ = 1.02%, 1.59%, and 2.41%, respectively). The majority of the plain concrete beams had transverse reinforcement which consisted of 6 mm stirrups arranged at a spacing of 100 mm in the shear spans, while most of the HSFRC beams were built without stirrups. The results indicate that all the parameters in this study (reinforcement ratio, presence of stirrups, concrete strength, steel fibres, fibre content and fibre type) affected the static and blast response of the beams, however, the results demonstrate that steel fibres have a more remarkable effect when compared to the other parameters. The provision of fibres is found to improve the blast performance of the HSC beams by increasing shear capacity, reducing maximum and residual mid-span displacements, reducing blast fragments and increasing damage tolerance.
Ökologische und ökonomische Potenziale von Mobilitätskonzepten in Klein- und Mittelzentren sowie dem ländlichen Raum vor dem Hintergrund des demographischen Wandels
Creators: name: Herget, Melanie
name: Hunsicker, Frank
name: Koch, Jonas
Publisher: name: My University
Year: 2019
Subjects: subject: Nachhaltige Mobilität
subject: Ländlicher Raum
subject: Bevölkerungsentwicklung
subject: Verkehrsvermeidung
subject: Verkehrsverlagerung
subject: Emissionsminderung
subject: Mittelzentren
subject: demografischer Wandel
subject: Demographischer Wandel
subject: Treibhausgasreduzierung
subject: Verkehr

description: In dem Vorhaben wurden Wege aufgezeigt, Verkehr in ländlichen Räumen, Klein- und Mittelstädten zu vermeiden, zu verlagern und effizienter zu gestalten und die durch den Verkehr verursachten CO2-Emissionen zu verringern. Es wurden nachhaltige Mobilitätskonzepte auf der Grundlage von Maßnahmen und Anpassungsstrategien an den strukturellen Wandel entwickelt, ohne die Mobilität der Bevölkerung einzuschränken. Diese wurden zu einem umfassenden und integrierten Mobilitäts- und Dienstleistungskonzept verknüpft. Am Beispiel von drei Modellregionen wurden die CO2-Potenziale dieser integrierten Mobilitätskonzepte ermittelt und konkrete Maßnahmen zur Umsetzung aufgezeigt. Die Maßnahmensteckbriefe sind im Anlagenband enthalten.
Dynamic, performance-aware configuration and management of web service monitoring systems
Creators: name: Heward, Garth
Publisher: name: Swinburne
Year: 2024

description: Service-Oriented Architectures, and in particular, Web Services, are methods for distributing software systems across businesses, locations and platforms. Software monitoring is vital due to the dynamic nature, and business and legal requirements of these systems. However, monitoring also comes with a performance burden. This work first measured the performance impacts of existing web service monitoring techniques. Having established these impacts, a technique was devised to optimize web service monitoring systems in order to reduce performance impacts whilst delivering an acceptable level of monitoring. Applying this optimization technique has resulted in performance increases of over 30% in case study systems.
Analysis and Modulation of In Vitro Cell Response to Metal Ions From CoCrMo Alloys Used in Orthopaedic Applications
Creators: name: Baskey, Stephen James
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2015
Subjects: Orthopaedics
Hip Implants
CoCrMo alloys
Metal ions
Immune response
Macrophages
Lymphocytes
Therapeutic modulation
Simvastatin

description: Despite the high success rates of hip replacements, implant-wear mediated periprosthetic osteolysis remains the most prominent cause of long-term implant failure. Other adverse tissue reactions including hypersensitivity reactions and pseudotumors have also recently been reported as a cause for short-term implant failures. The objectives of this thesis were: 1.) To analyze the effects of Co2+ and Cr3+ released from CoCrMo alloys used in hip implants on macrophage chemokine release; 2.) To determine if Co2+, Cr3+, and the chemokines in cultures of macrophages exposed to Co2+ and Cr3+ can induce migration of T and B lymphocytes; and 3) To analyze the potential modulation of macrophage response to Cr3+ using simvastatin as an anti-inflammatory agent. Results showed that the release of TNF–α and CC chemokines were ion-specific and dose-dependent. Results also suggested that Co2+ and Cr3+ may be capable of directly stimulating the migration of T cells, but not that of B cells, suggesting the potential of these ions to create a micro-environment that would favour a T cell-mediated response in vivo. Results also showed that simvastatin was capable of decreasing chemokine release in macrophages exposed to Cr3+, suggesting its potential to modulate the Cr3+-induced inflammatory response. Together, these studies improve the understanding of the role metal ions play in ion-mediated adverse tissue reactions and potential therapies that may modulate the immune response to metal ions.