Hochschulschriftenserver der TH Wildau
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Scientific Knowledge of the Human Side of Information Security as a Basis for Sustainable Trainings in Organizational Practices
No full textComprehensive digitization leads to new chal-lenges because of cybercrime and related security countermeasures. There is no doubt that this will fundamentally affect our lives and is leading to an increase in the importance of information security (IS). However, technology solutions alone are not sufficient to ensure IS countermeasures. The human side of security is important to protect organizational assets like user information and systems. The paper illustrates these relationships in terms of information security awareness (ISA), examining its goals and the factors influencing it through the systematic analysis and review of scientific literature and the transfer of scientific knowledge for practical purposes. We reviewed the publications of leading academic journals in the field of IS over the past decade
Improved Syringe Extruder for Improved Processing of Biological Materials
No full text3 dimensional (3D) printing evolved during the last decade to a consumer friendly and affordable craft. Furthermore, implementations of this techniques in the field of biotechnological research and development within laboratories is a very expansive process. Bio-printers’ prices cover a wide spectrum and most basic models are available for around 5000€. On the other end, high-end printer machines with a vast variety of features are available for several hundreds of thousands of euros. Thus, due to the immense potential in the field of Biotechnology the availability of this technology for research purpose should be enhanced. A developed ecological syringe extruder prototype for processing of biological based gels has been further improved. The original prototype was capable to processing multiple layers of agar with concentrations of 1% and 2.5%. Based on these results the prototype was revised regarding printing process parameter, which include among others applied forces to the substrate, air-ventilation, and heating of the substrate. The process behavior will be simulated with computational fluid dynamics for the processing of biological based substrate. After a concluding validation these results are intended to be implemented into a new design for improved processing of a variety of bioinks
Wildauer Studiengang Bibliotheksinformatik : ein Plädoyer für das lebenslange Lernen
No full textThe article examines the claim to and possibilities of lifelong learning in permanent job positions. It argues that continuous and systematic training on the job is crucial, and analyses various possibilities to do this. The on-the-job master programme ‘Library Informatics’ is introduced as one specific example. Provocatively, my argument is based on the unspoken assumption that the service spectrum of information providers is perceived as all the more convincing and authentic within their respective educational sector, if their own attitude towards learning is proactive and inspiring.Der Beitrag hinterfragt kritisch den Anspruch und die Möglichkeiten des lebenslangen Lernens aus einer festen Anstellung heraus und geht den Fragen nach, warum wir uns kontinuierlich und systematisch fortbilden müssen und welche Möglichkeiten dazu existieren. Als konkretes Beispiel wird der berufsbegleitende Masterstudiengang Bibliotheksinformatik kursorisch vorgestellt. Provozierend folgt der Beitrag der unausgesprochenen These, dass Informationseinrichtungen umso authentischer und überzeugender mit ihrem Servicespektrum im Bildungssektor auftreten, wenn ihre eigene Einstellung zum Lernen ein anregendes und proaktives Beispiel gibt
Parallelised photoacoustic signal acquisition using a Fabry-Perot sensor and a camera-based interrogation scheme
No full textTomographic photoacoustic (PA) images acquired using a Fabry-Perot (FP) based scanner offer high resolution and image fidelity but can result in long acquisition times due to the need for raster scanning. To reduce the acquisition times, a parallelised camera-based PA signal detection scheme is developed. The scheme is based on using a sCMOScamera and FPI sensors with high homogeneity of optical thickness. PA signals were acquired using the camera-based setup and the signal to noise ratio (SNR) was measured. A comparison of the SNR of PA signal detected using 1) a photodiode in a conventional raster scanning detection scheme and 2) a sCMOS camera in parallelised detection scheme is made. The results show that the parallelised interrogation scheme has the potential to provide high speed PA imaging
Photoacids in biochemical applications
No full textBACKGROUND:
After excitation with light photoacids can change the pH in a solution by release of a proton. They have been used mostly for excited state proton transfer studies. In this review the general functionality and mechanisms and the subdivision of photoacids is explained.
STATE OF THE ART:
Different uses of photoacids are described, covering a wide range of various biochemical topics, focusing on biochemical applications. Examples for the introduced subdivisions are covered.
CONCLUSIONS AND OUTLOOK:
The areas in which photoacids can be employed are diverse. Photoacids have a promising future in biotechnology and biochemistry and should be considered for upcoming applications, especially in non-invasive control of biochemical reactions
Untersuchung der kapazitiven Auswirkungen einer Variation im Personaleinsatz in der Handgepäck-Nachkontrolle einer Flughafen-Sicherheitskontrollspur am Beispiel des BER-Layouts
Get PDFDieser wissenschaftliche Beitrag stellt die Untersuchung einer modernen Sicherheitskontrollspur für Passagiere und Handgepäck dar, wie sie unter anderem am Flughafen Berlin-Brandenburg Willy Brandt (BER) Anwendung finden wird. Nach einer Beschreibung der Verfahrensabläufe einer Sicherheitskontrolle entsteht unter Verwendung realer Passagierparameter und analysierter Prozesszeiten mit der Simulationssoftware CAST Terminal ein detailliertes Modell, mit dem die Passagierkapazität der Kontrollspur untersucht und ein eventueller Engpass lokalisiert werden kann. Durch zielgerichtete Veränderungen in der Personalbesetzung der Handgepäck-Nachkontrolle sollen daraus folgende kapazitive Auswirkungen bei einer Betrachtung unterschiedlicher Szenarien unter Variation der Alarmrate der Handgepäckprüfanlage untersucht werden. Mit steigender Alarmrate verschiebt sich der Kapazitätsengpass aus der Gepäckaufnahme in die Handgepäck-Nachkontrolle, was den Einsatz eines zweiten Nachkontrolleurs erforderlich macht.The paper comprises a simulative analysis of a modern security control lane for passengers and hand luggage as will apply at Berlin-Brandenburg Airport Willy Brandt. After a description of the procedures of a security control, a detailed model will be built utilizing the simulation software, CAST Terminal, and using real passenger parameters and process times to analyze the capacity of the control lane and locate a possible bottleneck. Due to purposive staff changes in the second hand luggage control, capacitive effects could be studied in consideration of different alarm rates of the baggage screening system. With an increasing alarm rate the capacitive bottleneck moves from luggage pick-up to second hand luggage control, which makes it necessary to employ a second security inspector
Beruflich Qualifizierte auf dem Weg ins Studium
Get PDFFür beruflich Qualifizierte ist der Weg in die Hochschulen und Universitäten in den letzten Jahren einfacher geworden. Die heterogenen Wege der beruflich Qualifizierten ins Studium werden wir in diesem Artikel beleuchten und aufzeigen, wie wir in unseren Mathematikvorkursen an die Vorkenntnisse unserer Studieninteressierten anknüpfen. Eine unter beruflich qualifizierten Studieninteressierten durchgeführte Befragung soll mehr Aufschluss darüber geben, über welche unterschiedlichen Wege und aus welchen persönlichen Gründen beruflich Qualifizierte ein Studium aufnehmen. Da Mathematik im Studium gerade für beruflich Qualifizierte meist eine große Hürde darstellt, hat die Technische Hochschule Wildau ihr Vorkursangebot auf die heterogener werdende Studierendenschaft angepasst.In recent years, the entry into universities for professionally qualified people has become more simple. This article will shed light on the heterogeneous paths of the vocationally qualified into study and show how in our mathematics pre-courses we build on the previous knowledge of our prospective students. A survey carried out among prospective professionally qualified students should provide more information about the different ways in which vocationally qualified students start their studies and for which personal reasons they do so. Because mathematics is usually a major hurdle, especially for the professionally qualified, the University of Applied Sciences Wildau has adapted its preliminary course offerings to the more heterogeneous student body
C60 fullerene accumulation in human leukemic cells and perspectives of LED-mediated photodynamic therapy
No full textRecent progress in nanobiotechnology has attracted interest to a biomedical application of the carbon nanostructure C60 fullerene since it possesses a unique structure and versatile biological activity. C60 fullerene potential application in the frame of cancer photodynamic therapy (PDT) relies on rapid development of new light sources as well as on better understanding of the fullerene interaction with cells.
The aim of this study was to analyze C60 fullerene effects on human leukemic cells (CCRF-CEM) in combination with high power single chip light-emitting diodes (LEDs) light irradiation of different wavelengths: ultraviolet (UV, 365 nm), violet (405 nm), green (515 nm) and red (632 nm). The time-dependent accumulation of fullerene C60 in CCRF-CEM cells up to 250 ng/106 cells at 24 h with predominant localization within mitochondria was demonstrated with immunocytochemical staining and liquid chromatography mass spectrometry. In a cell viability assay we studied photoexcitation of the accumulated C60 nanostructures with ultraviolet or violet LEDs and could prove that significant phototoxic effects did arise. A less pronounced C60 fullerene phototoxic effect was observed after irradiation with green, and no effect was detected with red light. A C60 fullerene photoactivation with violet light induced substantial ROS generation and apoptotic cell death, confirmed by caspase3/7 activation and plasma membrane phosphatidylserine externalization. Our work proved C60 fullerene ability to induce apoptosis of leukemic cells after photoexcitation with high power single chip 405 nm LED as a light source. This underlined the potential for application of C60 nanostructure as a photosensitizer for anticancer therapy
Zum Diskurs über die Sprache in der Wissenschaftskommunikation
No full textDer Diskurs über die Wissenschaftssprache darf nicht von außerwissenschaftlichen Interessen bestimmt werden. Er muss in den Bereich der Wissenschaft zurückgeholt und dort freiheitlich mit wissenschaftlicher Rationalität geführt werden