Publikationen


Suche nach „[Digital]“ hat 1066 Publikationen gefunden
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    DigitalNachhaltigTC Grafenau

    Beitrag (Sammelband oder Tagungsband)

    S. Goisser, Michael Fernandes, H. Mempel

    Zerstörungsfreie Messmethode zur schnellen Qualitätsbewertung und Haltbarkeitsabschätzung von Lebensmitteln mit Hilfe von Food Scannern

    52. Gartenbauwissenschaftliche Jahrestagung „Klimafolgen und Herausforderungen für den Gartenbau“, vol. 33

    DigitalNachhaltigTC Grafenau

    Beitrag (Sammelband oder Tagungsband)

    S. Goisser, Michael Fernandes, C. Ulrichs, H. Mempel

    Non-destructive measurement method for a fast quality evaluation of fruit and vegetables by using food-scanner

    Short Communications of the DGG and BHGL Annual Conference 2018 (Geisenheim, Germany), vol. 8/13

    DOI: 10.5288/dgg-pr-sg-2018

    Abstract anzeigen

    Recent reports estimate the volume of food loss along the supply chain to 1,3 billion tons globally per year, which equals one-third of food produced for human consumption (FAO, 2011). Further studies conducted for the German food supply chain estimate the quantity of annual food loss between 11 million (Universität Stuttgart, 2012) and 18 million (WWF, 2015) tons. Fruits and vegetables, with a percentage of 44 of the total food loss, are commodities most frequently thrown away (BMEL, 2012). In recent years, a lot of attention is given to so-called food-scanners. Food-scanner are miniaturized near-infrared (NIR) spectrometers, which allow a fast and noninvasive determination of food quality. They can be used as a multidimensional predictor to determine the chemical and physical composition of agricultural and food products (e.g. soluble solids, dry matter, moisture, firmness). Due to their small size and portability these devices can be used for in-field application as well as for researchers andend-consumers (Santos et al.,2013). Studies of Flores et al. (2009) and Kim et al. (2013) indicate that NIRS is suitable for predicting quality attributes of various tomato varieties. The experiments described in this study are conducted on tomatoes and focus on the performance of a food-scanner compared to a benchtop NIR-spectrometer. Important quality parameters of tomato, such as sugar content and firmness, are evaluated with respect to their predictability in order to validate the performance of this new kind of non-destructive measurement method.

    DigitalNachhaltigTC Grafenau

    Zeitschriftenartikel

    S. Goisser, S. Wittmann, Michael Fernandes, H. Mempel, C. Ulrichs

    Comparison of colorimeter and different portable food-scanners for non-destructive prediction of lycopene content in tomato fruit

    Postharvest Biology and Technology, vol. 167, no. September

    DOI: 10.1016/j.postharvbio.2020.111232

    Abstract anzeigen

    Lycopene, the red colored carotenoid in tomatoes, has various health benefits for humans due to its capability of scavenging free radicals. Traditionally, the quantification of lycopene requires an elaborate extraction process combined with HPLC analysis within the laboratory. Recent studies focused simpler methods for determining lycopene and utilized spectroscopic measurement methods. The aim of this study was to compare non-destructive methods for the prediction of lycopene by using color values from colorimeter measurements and Vis/NIR spectra recorded with three commercially available and portable Vis/NIR spectrometers, so called food-scanners. Tomatoes of five different ripening stages (green to red) as well as tomatoes stored up to 22 days after harvest were used for modeling. After measurement of color values and collection of Vis/NIR spectra the corresponding lycopene content was analyzed spectrophotometrically. Applying exponential regression models yielded very good prediction of lycopene for color values L*, a*, a*/b* and the tomato color index of 0.94, 0.90, 0.90 and 0.91, respectively. Color value b* was not a suitable predictor for lycopene content, whereas the (a*/b*)² value had the best linear fit of 0.87. In comparison to color measurements, the cross-validated prediction models developed for all three food-scanners had coefficients of determination (r²CV) ranging from 0.92 to 0.96. Food-scanners also can be used for additional measurements of internal fruit quality, and therefore have great potential for fruit quality assessment by measuring a multitude of important fruit traits in one single scan.

    DigitalAngewandte WirtschaftswissenschaftenTC Grafenau

    Vortrag

    Sebastian Wilhelm

    Activity Monitoring reusing Home Infrastructure Data

    Digital French-German Summer School with Industry 2020

    DigitalAngewandte WirtschaftswissenschaftenTC Grafenau

    Vortrag

    Dietmar Jakob

    Voice User Interfaces in the residential environment of elderly

    Digital French-German Summer School with Industry 2020

    DigitalAngewandte WirtschaftswissenschaftenTC Grafenau

    Beitrag (Sammelband oder Tagungsband)

    Sebastian Wilhelm, Dietmar Jakob, Diane Ahrens

    Human Presence Detection by monitoring the indoor CO2 concentration

    Tagungsband zur Konferenz Mensch und Computer 2020 (06.-09.09.2020; Magdeburg)

    DOI: 10.1145/3404983.3409991

    Abstract anzeigen

    Presence detection systems are becoming more and more important and are used in smart home environments in the Ambient Assisted Living (AAL) domain or in surveillance technology. Common systems focus on using motion sensors or cameras which have only a limited viewing angle and therefore monitoring gaps can easily occur within a room. Humans produce carbon dioxide (CO2) through their respiration which is distributed in rooms. As a result if one (or more) persons are in a room a significant increase in CO2 concentration in the room can be noted. With this work we investigate an approach to detect the presence or absence of people indoors by monitoring the CO2 concentration in the ambient air.

    DigitalAngewandte WirtschaftswissenschaftenTC Grafenau

    Beitrag (Sammelband oder Tagungsband)

    Sebastian Wilhelm, Dietmar Jakob, Jakob Kasbauer, M. Dietmeier

    Organizational, Technical, Ethical and Legal Requirements of Capturing Household Electricity Data for Use as an AAL System

    Proceedings of the Fifth International Congress on Information and Communication Technology (ICPCCI 2019) [20-21 February 2020; London, UK]

    DOI: 10.1007/978-981-15-5856-6_38

    Abstract anzeigen

    Due to demographic change elderly care is one of the major challenges for society in near future fostering new services to support and enhance the life quality of the elderly generation. A particular aspect is the desire to live in one’s homes instead of hospitals and retirement homes as long as possible. Therefore it is essential to monitor the health status i.e. the activity of the individual. In our data-driven society data is collected at an increasing rate enabling personalized services for our daily life using machine-learning and data mining technologies. However the lack of labeled datasets from a realistic environment hampers research for training and evaluating algorithms. In the project BLADL we use data mining technologies to gauge the health status of elderly people. Within this work we discuss the challenges and caveats both from a technical and ethical perspectives to create such a dataset.

    DigitalAngewandte WirtschaftswissenschaftenTC Grafenau

    Beitrag (Sammelband oder Tagungsband)

    Dietmar Jakob, Sebastian Wilhelm

    Amazon Echo: A Benchmarking Model Review

    Proceedings of the 14th International Conference on Interfaces and Human Computer Interaction (23-25 July 2020; Zagreb, Croatia)

    Abstract anzeigen

    Smart speakers are becoming increasingly popular. The market leader for smart speakers are the products of the Echo family from Amazon. There are currently 9 different models with different technical specifications available in Germany. With this paper, the models was benchmarked against each other in terms of (i) speech recognition reliability, (ii) output sound pressure and (iii) power consumption in a laboratory experiment. Previous works in this area has only considered individual models of the product family. Significant differences in speech recognition accuracy, output sound pressure and power consumption were identified between the models. In general it was observed, that the Echo Show 8 model was the most efficient in terms of the above criterias.

    DigitalAngewandte WirtschaftswissenschaftenTC Grafenau

    Beitrag (Sammelband oder Tagungsband)

    Dietmar Jakob, Sebastian Wilhelm, A. Gerl

    Data Privacy Management (DPM) - A Private Household Smart Metering Use Case

    Workshopband 6. Usable Security und Privacy Workshop im Rahmen der Konferenz Mensch und Computer 2020 (06.-09.09.2020; Magdeburg)

    DOI: 10.18420/muc2020-ws119-003

    Abstract anzeigen

    The automated collection of real life data in private households places special requirements on a Data Privacy Management (DPM) concept. The development and implementation of a DPM concept for use in a scientific environment is demonstrated according to a successful use case – the project BLADL. The intention of this paper is to provide a guideline for ethical and privacy-preserving data collection and management in research projects in the EU. 

    DigitalNachhaltigAngewandte WirtschaftswissenschaftenTC Grafenau

    Beitrag (Sammelband oder Tagungsband)

    S. Goisser, J. Krause, Michael Fernandes, H. Mempel

    Determination of tomato quality attributes using portable NIR-sensors

    Proceedings of OCM 2019: 4th International Conference on Optical Characterization of Materials (13-14 March, 2019; Karlsruhe), Karlsruhe

    ISBN: 978-3-7315-0864-9

    DOI: 10.5445/KSP/1000087509

    Abstract anzeigen

    As part of a research project a multidisciplinary approach of different research institutes is followed to investigate the possibility of using a commercially available miniaturized NIR-sensor for the determination of tomato fruit quality parameters in postharvest. Correlation of spectra and tomato reference values of firmness, dry matter and total soluble solids showed good prediction accuracy. Additionally the decline of firmness over storage time with respect to storage temperature of tomatoes could be modelled. Therefore, the decline of firmness as an indicator for shelf-life can be predicted using this portable NIR-Sensor.

    DigitalInstitut für Existenzgründung

    Buch (Monographie)

    Thomas Bartscher, R. Nissen

    Digital Target: Kompetenzmanagement für die Digitale Transformation

    DigitalInstitut für Existenzgründung

    Buch (Monographie)

    Thomas Bartscher, R. Nissen

    Fluides Personalmanagement: Die Digitale Transformation als Herausforderung und Chance begreifen

    DigitalInstitut für Existenzgründung

    Thomas Bartscher, R. Nissen

    Lernstrategie entwickeln – Kompetenzquellen entdecken. Mediendidaktische Lerneinheit des OPEN vhb-Kurses „Digitale Arbeitswelt. Herausforderungen und Chancen“

    DigitalInstitut für Existenzgründung

    Thomas Bartscher, R. Nissen

    Landkarten für die digitale Kompetenz. Mediendidaktische Lerneinheit des OPEN vhb-Kurses „Digitale Arbeitswelt. Herausforderungen und Chancen“

    DigitalInstitut für Existenzgründung

    Thomas Bartscher, R. Nissen

    Digitale Zukunftsfähigkeit. Mediendidaktische Lerneinheit des OPEN vhb-Kurses „Digitale Arbeitswelt. Herausforderungen und Chancen“

    DigitalInstitut für Existenzgründung

    Thomas Bartscher, R. Nissen

    Digitale Basiskompetenzen. Mediendidaktische Lerneinheit des OPEN vhb-Kurses „Digitale Arbeitswelt. Herausforderungen und Chancen“

    DigitalNachhaltigExtern

    Beitrag (Sammelband oder Tagungsband)

    Anton Schmailzl, T. Amann, M. Glockner, M. Fadanelli, M. Wagner, S. Hierl

    Finite element analysis of thermoplastic probes under tensile load using ls-dyna compared to ansys workbench 14 in correlation to experimental investigations

    Elektronischer Tagungsband ANSYS Conference & 30th CADFEM Users' Meeting - ACUM (24.-26.10.2012; Kassel)

    DigitalNachhaltigExtern

    Beitrag (Sammelband oder Tagungsband)

    Anton Schmailzl

    On-axis process monitoring of quasi-simultaneous laser transmission welding of polymers

    Applied Research Conference 2013, ARC 2013, Aachen

    ISBN: 978-3844022742

    DigitalNachhaltigExtern

    Beitrag (Sammelband oder Tagungsband)

    Anton Schmailzl, S. Hierl

    Hierl, S.: Online-Prozessüberwachung beim Quasi-Simultanen Laser-Durchstrahlschweißen von Kunststoffen

    Young Professionals - Jugend forscht und Schweisst

    DigitalNachhaltigExtern

    Zeitschriftenartikel

    Anton Schmailzl, S. Hierl, M. Sieben, F. Brunnecker

    Optimierung der Spanndruckverteilung beim Laserdurchstrahlschweißen komplexer Bauteile mittels FE-Berechnung

    Joining Plastics - Fügen von Kunststoffen, vol. 7, pp. 30-34