TY - THES A1 - Lebrecht, Rike-Charlotte T1 - Inga : ein modulares hydroponisches System für Endverbraucher N2 - In dieser Arbeit wurde sich mit der Frage auseinandergesetzt, wie sich der Nahrungsmittelanbau im urbanen Raum entwickeln könnte. Eine spannende Alternative zu traditionellen Anbaumethoden ist die Hydroponik, der Anbau von Pflanzen ohne Erde. Basierend auf dieser Technologie wurde in diesem Projekt ein Indoor-Garden-System gestaltet, welches den Nahrungsmittelanbau zurück zur Verbraucher:In bringt und zu einem bewussteren Umgang mit Lebensmitteln anregen soll. Denn mit „INGA“ kann frisches, pestizidfreies Blattgemüse ganz einfach zu Hause selbst angebaut werden. Das hydroponische System schafft mithilfe einer Nährstofflösung und künstlichem Licht optimale Wachstumsbedingungen für die Pflanzen – ganz unabhängig von örtlichen Gegebenheiten. Mithilfe seiner Modularität können Nutzer:Innen „INGA“ nach Belieben konfigurieren. Damit wird es einer breiten Zielgruppe mit unterschiedlichen Bedürfnissen gerecht und ermöglicht pestizidfreie Nahrung – auch in den Städten. KW - Urban KW - Hydroponik KW - Frisches Gemüse KW - Produktdesign KW - Industriedesign Y1 - 2022 N1 - Für diese Arbeit steht kein Volltext zur Verfügung. PB - FH Aachen CY - Aachen ER - TY - THES A1 - Janssen, Hanna T1 - UMGARNT : Handarbeit als Mittel zur Festigung der emotionalen Bindung zu Möbelstücken N2 - Nach drei Jahren ist der Anblick der beigen Kommode doch etwas langweilig geworden und es steht ein Tapetenwechsel an? Das ist noch lange kein Grund, neue Möbel kaufen zu müssen. Mit dem „BOBBI“-Regal lässt sich das Farbkonzept des Möbelstücks fortlaufend anpassen. Das reduzierte Grundgestell basiert auf einem einfachen Stecksystem und ermöglicht nicht nur einen schnellen, intuitiven Aufbau, sondern auch eine modulare Erweiterung des Regalsystems. Eintönig? Nein Danke! Zeitloses, langlebiges Design muss nicht schlicht und farblos sein! Der Schlüssel liegt in der Individualisierbarkeit. Mithilfe einer einfachen textilen Bespannungstechnik passt der Kunde das Gerüst nach seinen Vorstellungen an. Auf diese Weise kann der Charakter des Möbelstücks nicht nur farblich, sondern auch strukturell regelmäßig verändert werden und trägt zu einer nachhaltigen und achtsamen Raumgestaltung bei. KW - Möbeldesign KW - Textil KW - Individualisierbarkeit KW - Achtsamkeit KW - Weben Y1 - 2022 N1 - Für diese Arbeit steht kein Volltext zur Verfügung. PB - FH Aachen CY - Aachen ER - TY - THES A1 - Laubkermeier, Kim T1 - trust me N2 - "trust me" ist eine schwarz-weiß Fotoserie, präsentiert als Diashow mit unterlegtem Soundtrack. Es geht um das Vertrauen zwischen Model, Fotografin und Betrachter:innen. Die Darsteller sind ausschließlich homosexuelle Männer und begeben sich in intime Situationen und Posen. Die Fotos sind überwiegend Aktaufnahmen und nehmen eine pornografische Richtung an. Die Fragestellung zu Beginn war, wie weit vertrauen die unerfahrenen Models der Fotografin und was sind diese bereit, von sich zu zeigen. Die offene Kommunikation über die Richtung des Projekts war die essenzielle Basis für die Fotoshootings. Während des Fotografierens lag der Fokus auf möglichst verschiedenen Blickwinkeln, Kulissen, Ausleuchtungen und Motiven. Zusätzlich war der sensible Umgang mit den Männern eine Vertrauensprobe."trust me" lässt auf diversen Ebenen tief blicken und zeigt, wie loslassen aussieht. KW - Fotografie KW - schwarz-weiß KW - Diashow KW - Vertrauen KW - Portraits Y1 - 2022 N1 - Für diese Arbeit steht kein Volltext zur Verfügung. PB - FH Aachen CY - Aachen ER - TY - THES A1 - Inceman Cremer, Suzan T1 - Kouyou : Ort im Raum N2 - Selbstliebe, der Moment der Ruhe, sich eine mentale Pause erlauben und von allem bewusst abzuschalten, sind aktuelle Themen unserer Gesellschaft. Die Zeit, in der wir leben, bewegt sich in einer Geschwindigkeit, die alle unsere Sinne überlastet und uns nicht mehr erlaubt, selbst zuzuhören oder volle Momente der Ruhe zu erleben. Thema der Bachelorarbeit ist der Entwurf eines Sitzmöbels, welches inspiriert ist durch die sakralische Architektur. Der Stuhl soll das Gefühl von Umformung und Leichtigkeit vermitteln. Er ist aus Eiche gebaut und unterstützt den Menschen in seiner bewussten Sitzhaltung. Die Eiche ist ein Baum, der für Kraft, Durchhaltevermögen und Gerechtigkeit steht. Es heißt auch, wenn man eine Eiche sieht, sie umarmen soll, da sie heilende Kräfte hat. Hier ist aber die Eiche, die den Menschen symbolisch umarmen soll, wenn man auf ihr sitzt. Und somit spielen Architektur, Möbel und der Mensch eine spielende Rolle, und zwar ist es die menschliche Haltung im Raum. KW - Philosophie KW - Architektur KW - Möbel KW - Reise KW - Eiche Y1 - 2022 N1 - Für diese Arbeit steht kein Volltext zur Verfügung. PB - FH Aachen CY - Aachen ER - TY - CHAP A1 - Sattler, Johannes Christoph A1 - Atti, Vikrama Naga Babu A1 - Alexopoulos, Spiros A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf A1 - Dutta, Siddharth A1 - Kioutsioukis, Ioannis T1 - DNI forecast tool for the smart operation of a parabolic trough collector system with concrete thermal energy storage: Theory, results and outlook T2 - SolarPACES 2022 conference proceedings N2 - This work presents a basic forecast tool for predicting direct normal irradiance (DNI) in hourly resolution, which the Solar-Institut Jülich (SIJ) is developing within a research project. The DNI forecast data shall be used for a parabolic trough collector (PTC) system with a concrete thermal energy storage (C-TES) located at the company KEAN Soft Drinks Ltd in Limassol, Cyprus. On a daily basis, 24-hour DNI prediction data in hourly resolution shall be automatically produced using free or very low-cost weather forecast data as input. The purpose of the DNI forecast tool is to automatically transfer the DNI forecast data on a daily basis to a main control unit (MCU). The MCU automatically makes a smart decision on the operation mode of the PTC system such as steam production mode and/or C-TES charging mode. The DNI forecast tool was evaluated using historical data of measured DNI from an on-site weather station, which was compared to the DNI forecast data. The DNI forecast tool was tested using data from 56 days between January and March 2022, which included days with a strong variation in DNI due to cloud passages. For the evaluation of the DNI forecast reliability, three categories were created and the forecast data was sorted accordingly. The result was that the DNI forecast tool has a reliability of 71.4 % based on the tested days. The result fulfils SIJ’s aim to achieve a reliability of around 70 %, but SIJ aims to still improve the DNI forecast quality. KW - Direct normal irradiance forecast KW - DNI forecast KW - Parabolic trough collector KW - PTC KW - Thermal Energy Storage Y1 - 2024 U6 - https://doi.org/10.52825/solarpaces.v1i.731 SN - 2751-9899 (online) N1 - SolarPACES 2022, 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA IS - 1 PB - TIB Open Publishing CY - Hannover ER - TY - CHAP A1 - Hoffschmidt, Bernhard A1 - Alexopoulos, Spiros A1 - Göttsche, Joachim A1 - Sauerborn, Markus A1 - Kaufhold, O. T1 - High Concentration Solar Collectors T2 - Comprehensive Renewable Energy (Second Edition) / Volume 3: Solar Thermal Systems: Components and Applications N2 - Solar thermal concentrated power is an emerging technology that provides clean electricity for the growing energy market. To the solar thermal concentrated power plant systems belong the parabolic trough, the Fresnel collector, the solar dish, and the central receiver system. For high-concentration solar collector systems, optical and thermal analysis is essential. There exist a number of measurement techniques and systems for the optical and thermal characterization of the efficiency of solar thermal concentrated systems. For each system, structure, components, and specific characteristics types are described. The chapter presents additionally an outline for the calculation of system performance and operation and maintenance topics. One main focus is set to the models of components and their construction details as well as different types on the market. In the later part of this article, different criteria for the choice of technology are analyzed in detail. KW - Central receiver system KW - Concentrated solar collector KW - Solar dish KW - Solar concentration Y1 - 2022 SN - 978-0-12-819734-9 U6 - https://doi.org/10.1016/B978-0-12-819727-1.00058-3 SP - 198 EP - 245 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Schuba, Marko A1 - Höfken, Hans-Wilhelm A1 - Linzbach, Sophie T1 - An ICS Honeynet for Detecting and Analyzing Cyberattacks in Industrial Plants T2 - 2021 International Conference on Electrical, Computer and Energy Technologies (ICECET) N2 - Cybersecurity of Industrial Control Systems (ICS) is an important issue, as ICS incidents may have a direct impact on safety of people or the environment. At the same time the awareness and knowledge about cybersecurity, particularly in the context of ICS, is alarmingly low. Industrial honeypots offer a cheap and easy to implement way to raise cybersecurity awareness and to educate ICS staff about typical attack patterns. When integrated in a productive network, industrial honeypots may not only reveal attackers early but may also distract them from the actual important systems of the network. Implementing multiple honeypots as a honeynet, the systems can be used to emulate or simulate a whole Industrial Control System. This paper describes a network of honeypots emulating HTTP, SNMP, S7communication and the Modbus protocol using Conpot, IMUNES and SNAP7. The nodes mimic SIMATIC S7 programmable logic controllers (PLCs) which are widely used across the globe. The deployed honeypots' features will be compared with the features of real SIMATIC S7 PLCs. Furthermore, the honeynet has been made publicly available for ten days and occurring cyberattacks have been analyzed KW - Conpot KW - honeypot KW - honeynet KW - ICS KW - cybersecurity Y1 - 2022 SN - 978-1-6654-4231-2 SN - 978-1-6654-4232-9 U6 - https://doi.org/10.1109/ICECET52533.2021.9698746 N1 - 2021 International Conference on Electrical, Computer and Energy Technologies (ICECET). 09-10 December 2021. Cape Town, South Africa. PB - IEEE ER - TY - JOUR A1 - Stäudle, Benjamin A1 - Seynnes, Olivier A1 - Laps, Guido A1 - Brüggemann, Gert-Peter A1 - Albracht, Kirsten T1 - Altered gastrocnemius contractile behavior in former achilles tendon rupture patients during walking JF - Frontiers in Physiology N2 - Achilles tendon rupture (ATR) remains associated with functional limitations years after injury. Architectural remodeling of the gastrocnemius medialis (GM) muscle is typically observed in the affected leg and may compensate force deficits caused by a longer tendon. Yet patients seem to retain functional limitations during—low-force—walking gait. To explore the potential limits imposed by the remodeled GM muscle-tendon unit (MTU) on walking gait, we examined the contractile behavior of muscle fascicles during the stance phase. In a cross-sectional design, we studied nine former patients (males; age: 45 ± 9 years; height: 180 ± 7 cm; weight: 83 ± 6 kg) with a history of complete unilateral ATR, approximately 4 years post-surgery. Using ultrasonography, GM tendon morphology, muscle architecture at rest, and fascicular behavior were assessed during walking at 1.5 m⋅s–1 on a treadmill. Walking patterns were recorded with a motion capture system. The unaffected leg served as control. Lower limbs kinematics were largely similar between legs during walking. Typical features of ATR-related MTU remodeling were observed during the stance sub-phases corresponding to series elastic element (SEE) lengthening (energy storage) and SEE shortening (energy release), with shorter GM fascicles (36 and 36%, respectively) and greater pennation angles (8° and 12°, respectively). However, relative to the optimal fascicle length for force production, fascicles operated at comparable length in both legs. Similarly, when expressed relative to optimal fascicle length, fascicle contraction velocity was not different between sides, except at the time-point of peak series elastic element (SEE) length, where it was 39 ± 49% lower in the affected leg. Concomitantly, fascicles rotation during contraction was greater in the affected leg during the whole stance-phase, and architectural gear ratios (AGR) was larger during SEE lengthening. Under the present testing conditions, former ATR patients had recovered a relatively symmetrical walking gait pattern. Differences in seen AGR seem to accommodate the profound changes in MTU architecture, limiting the required fascicle shortening velocity. Overall, the contractile behavior of the GM fascicles does not restrict length- or velocity-dependent force potentials during this locomotor task. KW - tendon rupture KW - muscle fascicle behavior KW - walking gait KW - force generation KW - ultrasound imaging Y1 - 2022 U6 - https://doi.org/10.3389/fphys.2022.792576 SN - 1664-042X VL - 13 PB - Frontiers Research Foundation CY - Lausanne ER - TY - JOUR A1 - Uysal, Karya A1 - Firat, Ipek Serat A1 - Creutz, Till A1 - Aydin, Inci Cansu A1 - Artmann, Gerhard A1 - Teusch, Nicole A1 - Temiz Artmann, Aysegül T1 - A novel in vitro wound healing assay using free-standing, ultra-thin PDMS membranes JF - membranes N2 - Advances in polymer science have significantly increased polymer applications in life sciences. We report the use of free-standing, ultra-thin polydimethylsiloxane (PDMS) membranes, called CellDrum, as cell culture substrates for an in vitro wound model. Dermal fibroblast monolayers from 28- and 88-year-old donors were cultured on CellDrums. By using stainless steel balls, circular cell-free areas were created in the cell layer (wounding). Sinusoidal strain of 1 Hz, 5% strain, was applied to membranes for 30 min in 4 sessions. The gap circumference and closure rate of un-stretched samples (controls) and stretched samples were monitored over 4 days to investigate the effects of donor age and mechanical strain on wound closure. A significant decrease in gap circumference and an increase in gap closure rate were observed in trained samples from younger donors and control samples from older donors. In contrast, a significant decrease in gap closure rate and an increase in wound circumference were observed in the trained samples from older donors. Through these results, we propose the model of a cell monolayer on stretchable CellDrums as a practical tool for wound healing research. The combination of biomechanical cell loading in conjunction with analyses such as gene/protein expression seems promising beyond the scope published here. Y1 - 2022 U6 - https://doi.org/10.3390/membranes13010022 N1 - This article belongs to the Special Issue "Latest Scientific Discoveries in Polymer Membranes" VL - 2023 IS - 13(1) PB - MDPI CY - Basel ER - TY - JOUR A1 - Harris, Isaac A1 - Kleefeld, Andreas T1 - Analysis and computation of the transmission eigenvalues with a conductive boundary condition JF - Applicable Analysis N2 - We provide a new analytical and computational study of the transmission eigenvalues with a conductive boundary condition. These eigenvalues are derived from the scalar inverse scattering problem for an inhomogeneous material with a conductive boundary condition. The goal is to study how these eigenvalues depend on the material parameters in order to estimate the refractive index. The analytical questions we study are: deriving Faber–Krahn type lower bounds, the discreteness and limiting behavior of the transmission eigenvalues as the conductivity tends to infinity for a sign changing contrast. We also provide a numerical study of a new boundary integral equation for computing the eigenvalues. Lastly, using the limiting behavior we will numerically estimate the refractive index from the eigenvalues provided the conductivity is sufficiently large but unknown. KW - Boundary integral equations KW - Inverse spectral problem KW - Conductive boundary condition KW - Transmission eigenvalues Y1 - 2020 U6 - https://doi.org/10.1080/00036811.2020.1789598 SN - 1563-504X VL - 101 IS - 6 SP - 1880 EP - 1895 PB - Taylor & Francis CY - London ER -