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Studien indizieren, dass die Generation Z, die sogenannten „Digital Natives“, einen leichten Zugang zu Informations- und Kommunikationstechnologien (IKT) hat. Zugleich attribuieren sich die Individuen dieser Generation auch selbst eine hohe IKT-Affinität. Diese Kombination legt gewisse Lehrmethoden (wie Selbststudium oder Projektarbeit) im Rahmen der Hochschullehre auch für ERP-Systeme nahe. An diesem Punkt setzt dieser Beitrag an und zeigt in einem Experiment anhand von zwei SAP-Lernumgebungen mit vier Studierendengruppen, dass die unreflektierte und implizite Annahme der hohen IKT-Affinität recht trügerisch und kontraproduktiv für die Lehre ist. Von Studierenden selbst gewählte Lernmethoden haben dabei das Nachsehen. Damit einhergehend führen mehrdimensionale Lehrmethoden zu messbar höheren Lernerfolgen. Theoretisch begleitet wird diese Arbeit vom Technology Acceptance Model (TAM).
Bei der Umsetzung der digitalen Transformation bewegt sich das ITManagement in Krankenhäusern in einem Spannungsfeld aus historischkulturellen Vorbedingungen und den besonderen Herausforderungen wissensintensiver Expertenorganisation. Um zu untersuchen, wie professionell das ITManagement vor diesem Hintergrund ist, wurde in der vorliegenden Studie der Professionalisierungsgrad des IT-Managements als Beschreibungsgröße vorgeschlagen. Darüber hinaus wurden Ausprägungen der IT-Governance und des IT-Entrepreneurships als mögliche Determinanten des Professionalisierungsgrades konzeptionalisiert. Ein entsprechend aufgestelltes, hypothesengeleitetes Untersuchungsmodell wurde anhand der Daten von 164 CIOs deutscher Krankenhäuser überprüft. Die Ergebnisse der Studie deuten auf Professionalisierungspotenziale des IT-Managements im strategischen und evaluierenden Bereich hin. Etablierte Kommunikationskanäle zwischen CIO und Krankenhausleitung sowie eine ausgewiesene IT-Budgetverantwortungen wirkten sich positiv auf den Professionalisierungsgrad aus. Zudem Das agierte das ITManagement umso professioneller, je stärker der IT-Entrepreneurship auf organisatorischer und individueller Ebene ausgeprägt war. Die Ergebnisse können den theoretischen Erkenntnisstand über die Wirkungsweise von IT-Governance und IT-Entrepreneurship erweitern und auf ähnliche, wissensintensive Expertenorganisationen übertragen werden.
Wirkung eines Vitamin D3-Metaboliten (25-OH-D3) auf den Geburtsverlauf von hochleistenden Sauen
(2022)
Werkstattbericht zum Projekt NAHGast, Fokus: ‚Leitbild nachhaltiger Gemeinschaftsverpflegung‘
(2016)
Water retention properties of wood fiber based growing media and their impact on irrigation strategy
(2024)
Distribution of water and air in growing media during ebb-and-flow irrigation depends on water storage properties (water retention curve) and water transport properties (hydraulic conductivity) of the materials. Growing media with their high number of coarse pores are known to exhibit strong hysteresis, i.e., differences in the water retention properties during drying and wetting cycles. To account for potential ecological disadvantages of peat, wood fibers are commonly used as substitutes for peat in growing media. However, the wood fibers generally have higher air capacities and hydraulic conductivities and lower water capacities compared to peat which may results in necessary adaptions of the irrigation strategy. Tools to optimize irrigation systems are physically based water transport models, such as HYDRUS-1D, which is commonly used to describe water transport in soils, but not often for growing media. In this study, white peat and pure wood fibers were used to describe differences in their water retention behavior. Water retention curves (drying cycles) and hydraulic conductivities were measured with standard analytical procedures. Hysteresis of the water retention curves was analytically determined based on their capillary rise properties. The results were used with a modified HYDRUS-1D model to test model quality against measured water contents during ebb-and-flow irrigation cycles and to optimize the irrigation strategy for the different materials. The results showed that the model quality was sufficiently good only if the strong hysteresis of the water retention curves was considered during the simulation process. Different strategies were tested to modify ebb-and-flow irrigation (irrigation frequency, irrigation duration and irrigation height) in that way that the water suction in the root zone was similar to that of the peat material. Simulation results showed that significant improvements could only be reached by increasing the flooding depth in ebb-and-flow systems to ensure an optimum water supply of plants in the wood fiber based growing media.
Versorgungskontinuität durch Information : Evaluation des HL7-Standards für den ePflegebericht
(2013)
Methods: Systematic review of randomized controlled trials (RCT). Searches were conducted in five electronic databases. Studies were selected if they included patients with NP over 18 years old treated with aerobic exercise (AE) (e.g., cycling, running, hiking, and walking). The main outcome of interest was pain intensity. Qualitative and quantitative data were extracted. The risk of bias (RoB) was determined using the Cochrane RoB Tool-2 and the overall certainty of the evidence with the GRADE recommendations.
Results: Out of 21,585 initial records screened, a total of six individual studies published in ten manuscripts were included. There was a great heterogeneity between protocols, comparisons, and studies’ results (different magnitudes and directions). When looking at the effect of aerobic exercise versus control groups or other interventions on pain intensity measured with the VAS, not statistically (nor clinical) significant differences between aerobic exercise and control groups (MD [95%CI] 5.16 mm [-6.38, 16.70]) were identified. The combined effect of AE plus other interventions seems to be effective. Strength exercise obtained better effects than aerobic exercises (MD [95%CI]: -11.34 mm [-21.6, -1.09]).
Conclusions: Aerobic exercise presented positive results to reduce pain intensity, and improving disability, and physical and emotional functioning. However, the evidence is restricted, low quality, and heterogeneous.
Methods: The searches were conducted on five electronic databases. RCTs or CTs with patients over 18 years old of both sexes with OFP diagnoses were targeted. The intervention of interest was AE (i.e., walking, cycling, and running), compared to any other conservative and non-conservative therapy. The primary outcome was pain intensity. Risk of bias (RoB) was done with the Cochrane RoB tool (RoB 2). The overall certainty of the evidence was evaluated with GRADE.
Results: Out of 21,585 initial records found in the initial database search, only one study (reported on three manuscripts) was included. The diagnosis of interest was headache plus temporomandibular disorders (TMD). Three treatment groups (strengthening (Str) exercise + manual therapy (MT) (G1); AE + MT + Str exercises (G2); AE (G3)) were compared. The main outcome was pain; the secondary outcomes included disability, strength, anxiety, and quality of life. The combined treatment (AE+MT+Str exercises) had the strongest effect to decrease pain and headache intensity in patients with OFP (SMD: 9.99 [95%CI: 7.19, 12.80].
Conclusions: a multimodal treatment strategy achieved the greatest positive effects on pain and other outcomes in the short/medium term. AE seems to be an important component of this strategy. However, the scientific evidence supporting AE’s isolated effect is limited, indicating a research gap in this scientific field.
The way in which brands are economically represented in the context of financial reporting is controversial in theory and practice. This holds especially against the background of the ever- increasing importance of intangible assets. Brands and the economic success associated with them are thus regarded as a key variable for overall corporate success: cash flows can be accelerated and expanded through the use of brand-strategic options, while existing risks may be mitigated. In addition to a large number of theoretical definitions, the determination of brand value from both a marketing and an accounting perspective is also characterized by a complex interaction of numerous influencing factors. This is where the International Accounting Standards IAS 38: "Intangible Assets" (isolated acquisition of a brand) and IFRS 3: "Business Combinations" (acquisition of a brand as part of a business combination) take effect: These are intended to ensure a comparable and reliable "true and fair view" for the presentation of intangible assets in international accounting. In addition to various recognition criteria, the accounting regulation here also includes the accounting valuation of intangible assets and thus also of brands. In principle, valuation in accordance with IAS 38 is based on acquisition costs. The determination of the operating life for impact evaluation is highly controversial both in literature and in practice. Under IFRS 3, acquisition costs are to be replaced by the fair value. Regardless of the method used, possible subjectivity is one of the central issues. The current discussion approach of the International Accounting Standards Board also clearly shows the need for simplification and concretization that still exists for practice: In particular, the accounting distinction between goodwill and intangible assets is the subject of discussions with the Global Preparers Forum, among others. The interests of users, preparers and auditors of corporate financial reporting must be taken into account equally. In particular, the prohibition on recognizing self-created brands in the balance sheet makes it difficult to assess their value. Furthermore, it creates a weak point in the presentation of the true and fair view of a company's financial position and financial performance that is generally required. Regardless of the previous, the current rules provide preparers and users with a basic overview of existing intangible assets. Irrespective of how valuation is determined individually, the IASB's rules thus help to create a fundamental structure. In which approach the future discussion will result in remains open.
Mit einem systematischen Ansatz konnte basierend auf gering aufgelösten Daten (Bodenkarte, Höhenmodell, Landnutzungsklassifikation) das theoretische Expansionspotential für Ackerflächen in der Provinz Tjumen (Westsibirien, Russische Föderation) abgeschätzt werden. Die theoretisch mögliche Ausdehnung der Ackernutzung um 57% in den landwirtschaftlich relevanten Gebieten konnte allerdings nur zur Hälfte mit Groundtruthdaten in 3 Testareas (je 400 km²) validiert werden. Darüber hinaus waren 52% dieser positiven Validierungspunkte auf Ackerbrachen verortet, die derzeit nicht ökonomisch rentabel zu bewirtschaften sind. Insgesamt kann daher nur eine Expansion der Ackerflächen um 14,5% (? 1900 km² bzw. 1,1% der Gesamtfläche) als potentiell möglich angesehen werden.
German farmers are required by law to regularly self-assess the welfare of their animals. The project Q Check is aiming at developing a system that will assist farmers to objectively assess animal health and welfare in dairy cows. For this reason, a quarterly report will be compiled from animal-based key indicators to give an overview of the on-farm situation. The anonymised and aggregated reports can also be used for national animal welfare monitoring: Continuous collection of these key indicators enables the summary and publication of figures reflecting the current animal health and welfare status and progressions at federal state and at national level. Q Check is based on four data recording and analysis systems, which are already established in Germany and implemented on a national level. Out of these systems, the most suitable indicators to describe herd health have been selected by 215 experts within a twostage Delphi study. In addition, over 50 face-to-face interviews with stakeholders related to the German dairy sector have been performed in order to take into account the socio-scientific point of view. To complete the process, the selected indicators are currently being checked against mass data and hence tested for suitability regarding monitoring purposes. An automatic farm-specific evaluation of animal health, based on verified indicators, will provide support to farmers in fulfilling their legal requirements and in identifying weak points on the individual farms. A benchmarking system will be set up which will allow tracking the individual herd health indicators in the same farm in their course over time and compared with similar farms. These routinely provided horizontal and vertical statistics will facilitate targeted intervention and support objectified management decisions, implying that dairy farmers can benefit in several respects. In the course of the project, new tools for determining the risk of ketosis in the scope of milk recording will also be validated and implemented at national level to enhance monitoring of this major disease complex. The results of these nationwide, systematic investigations will contribute substantially to objectifying the discussion about the health and welfare situation of dairy cows.
This study identifies and evaluates factors for success in innovation work in the Bavarian dairy farming industry. The research is based on an analysis of innovation system theories and a comparison with innovation work in the Dutch dairy sector. Dutch dairy farming is characterized by high productivity and technical efficiency at the farm level. Moreover, important developments in dairy farming have originated in the Netherlands. Therefore, this study delves into the systemic background of the successful innovation work in the Netherlands and makes a comparison with Bavaria. The main result of this study is that innovation work in the Bavarian dairy farming sector is lacking in two respects: end-user (farmer) integration and within-sector cooperation.
Soziale Benachteiligung und Schwangerschaft : Was wissen wir über die Bedürfnisse der Frauen?
(2012)
Der Einsatz regenerativer Energien ist eine wichtige Maßnahme zur Minderung von Treibhausgas-Emissionen in der Landwirtschaft und leistet einen Beitrag zur Verbesserung der Wirtschaftlichkeit. Im vorliegenden Fall wird ein Ferkelaufzuchtstall betrachtet, dessen hoher Wärmebedarf aktuell durch spezielle elektrische Wärmelampen gedeckt wird. Zusätzlich besteht regional die Problematik, dass zahlreiche Holzbestände durch den Borkenkäfer befallen sind und somit in nächster Zeit zwangsläufig gefällt werden müssen. Hierdurch fallen die Holzpreise auf den Märkten, weshalb eine Eigennutzung gegenüber dem Brennholzverkauf eine lohnende Alternative darstellt.
In einer Machbarkeitsstudie wird eine Solarthermieanlage ausgelegt, die einen Großteil des hohen Wärmebedarfs der Jungtiere decken soll und deren Überschusswärme in den Sommermonaten zur Trocknung des Hackgutes verwendet wird. Die hierdurch getrocknete Biomasse wird zur Deckung des verbleibenden Wärmebedarfes genutzt, wodurch die Anlage nahezu CO2-neutral ist. In einer Variantenstudie werden verschiedene Auslegungsparameter variiert und in Bezug auf Wirtschaftlichkeit diskutiert.
Knowledge of the small-scale nutrient status of arable land is an important basis for optimizing fertilizer use in crop production. A mobile field laboratory opens up the possibility of carrying out soil sampling and nutrient analysis directly on the field. In addition to the benefits of fast data availability and the avoidance of soil material transport to the laboratory, it provides a future foundation for advanced application options, e.g. a high sampling density, sampling of small sub-fields or dynamic adaptation of the sampling line during field sampling. An innovative key component is the NUTRI-STAT ISFET sensor module. It measures values for the ions "NO3- ”, “H2PO4- " and "K+ " as well as the pH. The ISFET sensor module was specially developed for soil nutrient analysis. The phosphorus measurement was further developed for the project "soil2data". First results from the ISFET sensor module show a measurement signal settling time of significantly less than 100 seconds and a further consistent stable measurement signal. The measurement signal dynamics of approx. 58 mV per factor 10 of concentration change is given for the measured variables pH and K+. For the measured quantities of NO3- and H2PO4- , the measurement signal dynamics are lower.
Die Einführung von Smart Glasses eröffnet neue Chancen für die Gestaltung zukünftiger Arbeitsprozesse. Bisher sind diese Technologien wenig erforscht und werden nur experimentell hinsichtlich einzelner Aspekte untersucht. Zur Priorisierung zukünftiger Forschungsthemen und Identifikation relevanter Problemstellungen für den Bereich der Wirtschaftsinformatik wurden daher explorative Fallstudien mit zwei Logistikdienstleistern durchgeführt. Zur Ermittlung relevanter Einsatzszenarien wurde eine Triangulation aus Experteninterviews, Beobachtungen und Fokusgruppen gewählt und durch eine systematische Literaturrecherche ergänzt. Die 36 resultierenden Anwendungsfälle wurden mithilfe einer Umfrage priorisiert und auf Basis ihrer qualitativen Aussagen bzgl. der Herausforderungen analysiert. Die Ergebnisse des Beitrags sind (1) Einsatzszenarien für Smart Glasses in der Logistik sowie (2) daraus abgeleitete Forschungsthemen für die Wirtschaftsinformatik. Somit leistet diese Studie einen Beitrag zur Forschung im Bereich des ganzheitlichen Designs von Dienstleistungssystemen und zukünftiger Aufgaben digitaler Arbeit.
Recent real-time networking developments have enabled ultra reliability, very low latency and high data rates in wired networks. Wireless networking developments have also shown that they can achieve very high data rates with consistency, but they still lack in providing ultra reliability and extremely low latency. Time Sensitive Networking (TSN) developments have brought these capabilities in Industry automation and Automotive industry too. Although TSN is standardized for wired networks for a long time, for wireless networks it will be standardized within the IEEE 802.11be standard for Wi-Fi and 3GPP Release 17 for 5G in the near future. This paper provides an overview of TSN in wired and wireless networks with the aim of comparing different simulators and presenting their offered functionality and shortcomings. These tools can be used to make oneself familiar with TSN algorithms, standards, and for the development and testing of time sensitive networks. Afterwards, the paper discusses open research questions for using TSN over wireless networks.
Shredlage in der Bullenmast
(2021)
Requirements Engineering für Referenzmodelle mittels eines multimethodischen Vorgehensmodells
(2012)
Obwohl es zahlreiche Arbeiten zum Requirements Engineering im Allgemeinen gibt, ist über die Ermittlung generischer und innovativer Anforderungen, wie sie in intersektoralen Informations-ketten eine Rolle spielen, wenig bekannt. Das Projekt IKM health zielt auf die Entwicklung von Referenzmodellen für Informationsketten zur Patientenversorgung ab. Forschungsfrage dieser Studie war, wie Informations- und Prozessanforderungen generiert werden können. Vor diesem Hintergrund wurde mit der Analyse von Leitlinien begonnen, deren Empfehlungen anschließend im Rahmen von Delphi-Befragungen und Experteninterviews zur Diskussion gestellt wurden. Trotz der sich zeigenden Heterogenität war es mit Hilfe des hier vorgestellten multimethodischen Vorgehensmodells möglich, passende Anforderungen zu erzielen und in UML zu modellieren.
Despite the wealth of literature on requirements engineering, little is known about engineering very generic, innovative and emerging requirements, such as those for cross-sectional information chains. The IKM health project aims at building information chain reference models for the care of patients with chronic wounds, cancer-related pain and back pain. Our question therefore was how to appropriately capture information and process requirements that are both generally applicable and practically useful. To this end, we started with recommendations from clinical guidelines and put them up for discussion in Delphi surveys and expert interviews. Despite the heterogeneity we encountered in all three methods, it was possible to obtain requirements suitable for building reference models. We evaluated three modelling languages and then chose to write the models in UML (class and activity diagrams). On the basis of the current project results, the pros and cons of our approach are discussed.
Within the consortium “Experimentation Field Agro-Nordwest”, a practical concept for knowledge and technology transfer of digital competence in agriculture was created. For this purpose, the web-based e-learning system “SensX” was set up, consisting of videos, presentations and instructions. In addition, the classical e-learning concept was extended by data sets, student experiments and sensor data of plants acquired by a remote phenotyping robot. This resulted in a massive open online course (MOOC), which was tested with agricultural and biotechnology students in higher education at the University of Applied Sciences Osnabrück over two years. The evaluation process of “SensX” included an empirical survey, qualitative interviews of the participating students by an external institution and an evaluation of the concept by the lecturers.
Regenerative Energiekonzepte zur Versorgung von Containergebäuden für verschiedene Klimazonen
(2020)
Leichtbauanwendungen auf Basis des Containerbaus bieten ökologische und ökonomische Potenziale für das Bauwesen und sind daher relevant innerhalb der Energiewende zur Erreichung eines nahezu klimaneutralen Gebäudebestandes. Daher werden hier verschiedene Anwendungen in unterschiedlichen Klimazonen behandelt.
Dazu werden zunächst die globalen Klimazonen analysiert und containerbasierte Leichtbaulösungen mit ihren Energiebedarfen und Nutzerprofilen vorgestellt. Durch bautechnische Optimierungen wird nahezu ein Passivhausstandard hergestellt. Auf Basis dieser Eingangsdaten werden verschiedene Energiekonzepte diskutiert, bei denen Solar- und Windenergie, aber auch Biomasse als regenerative Energieträger integriert werden. Die Konzepte werden allesamt mit der Software Polysun® simuliert und analysiert. Die verschiedenen Ansätze werden insbesondere in Bezug Energieautarkie, aber auch in Bezug auf Umsetzbarkeit verglichen und bewertet. Beispielsweise können mit einem Konzept bestehend aus einer Photovoltaik-Anlage, Wärmepumpe zur Wärme- und Kälteerzeugung sowie integriertem Batteriespeicher, Wärme- und Kältespeicher sehr gute Ergebnisse erzielt werden.
Schließlich wird noch der Einfluss der verschiedenen Klimazonen auf die erforderliche energietechnische Gebäudeausstattung sowie Potenziale für andere Anwendungskonzepte beschrieben.
Long Range Wide Area Network (LoRaWAN) operates in the ISM band with 868 MHz, where the Time on Air (ToA) is regulated in the EU to 1 %. LoRaWAN nodes use the Adaptive Data Rate (ADR) algorithm to adapt their data rates during operation. The standard ADR algorithm works well with stationary nodes, however is very slow in the adaptation for mobile nodes. This paper introduces a new ADR algorithm for LoRaWAN that is supported by higher level meta-data for sensor streams, namely Quality of Information (QoI). With the help of QoI it is possible to provide additional information to the new ADR algorithm, reducing the convergence time and thus improving the Packet Delivery Ratio (PDR) of data from mobile sensor nodes. The new algorithm requires only modifications on network server side and keeps backwards compatibility with LoRaWAN nodes. Results show a significant better PDR compared to the standard ADR in scenarios with a limited number of mobile nodes.
Pandemie, Nachfrageschocks und Krieg können Unternehmen an den Rand Ihrer Überlebensfähigkeit treiben. Eine Stärkung der Resilienz und der Nachhaltigkeit ist nachweislich durch Digitalisierung möglich. Aber welche Aspekte der Digitalisierung sind für die unternehmerische Resilienz besonders relevant und werden in der Praxis zielorientiert verfolgt? Diese Arbeit nutzt einen Multimethodenansatz, bestehend aus einem systematischen Literaturreview sowie aus semi-strukturierten Experteninterviews, um die obigen Fragen zu adressieren. Die Ergebnisse indizieren, dass aktuell die drei Themenfelder Dynamic Pricing, Process Mining und Self-Service Reporting/BI besonderen Fokus genießen. Andere Themenfelder hingegen, wie Neurale Netze, Blockchain Technologie, Gamification oder Text Mining werden in der Literatur zwar intensiv diskutiert, finden in der Praxis allerdings nach wie vor selten Einzug.
The objective of this article is to prepare for the initial certification according to IFS Global Markets Food V3 at the Landshuter Brauhaus AG private brewery at the Ellermühle site, which is expected in August 2025, and to create the basis for a potential follow-up certification according to IFS Food. The IFS Global Markets Food Program V3 is a standardized, voluntary and non-accredited assessment program for food companies, both for retail and manufacturer brand products (IFS 2023, p. 10 f.). It is based on the specifications of the Global Markets Program developed in 2008 (GFSI 2023a; VDOE 2020, p. 620).
The methodology of the target/actual analysis was used to work on the topic in order to be able to carry out a conformity check with regard to the requirements of IFS Global Markets Food V3 (see Appendix 3; IFS 2023). Observations, document analyses and employee surveys were carried out to obtain the most meaningful information possible. These have been recorded and evaluated within the target-performance analysis. A total of 65 deviations (equivalent to 53.7%) were identified at the basic level, and 60 deviations (equivalent to 82.2%) at the intermediate level. These were either processed as directly implemented corrective actions or formulated as recommendations for continuous improvement in the form of an action plan (see Appendix 15). The presentation of the action plan shows the deviations, the resulting measures, the associated responsibilities, the time period with the starting point and end point of the measures, and the current status. In addition a subdivision into "Basic" and "+Intermediate" was made for a better overview in the subsequent processing by the brewery.
A review as well as assessment of relevant requirements with regard to processes and significant violations after completion of the new building and commissioning at the Ellermühle site with regard to correlation with a potential "major" rating is recommended on the part of the operations manager or brewmaster (IFS 2023, p. 30).
Due to the resource-constrained nature of embedded systems, it is crucial to support the estimation of their power consumption as early in the development process as possible. Non-functional requirements based on power consumption directly impact the software design, e.g., watt-hour thresholds and expected lifetimes based on battery capacities. Even if software affects hardware behavior directly, these types of requirements are often overlooked by software developers because they are commonly associated with the hardware layer. Modern trends in software engineering such as Model-Driven Development (MDD) can be used in embedded software development to evaluate power consumption-based requirements in early design phases. However, power consumption aspects are currently not sufficiently considered in MDD approaches. In this paper, we present a model-driven approach using Unified Modeling Language profile extensions to model hardware components and their power characteristics. Software m odels are combined with hardware models to achieve a system-wide estimation, including peripheral devices, and to make the power-related impact in early design stages visible. By deriving energy profiles, we provide software developers with valuable feedback, which may be used to identify energy bugs and evaluate power consumption-related requirements. To demonstrate the potential of our approach, we use a sensor node example to evaluate our concept and to identify its energy bugs.
Perceptions of German consumers regarding methods for fortifying foods with iodine (Abstract)
(2022)
Optimised Nutrient Recovery from Biogas Digestate by Solid/Liquid Separation and Membrane Treatment
(2019)
Anaerobic digestion products of agricultural biogas plants are characterised by high nitrogen, phosphorus, and potassium content. In three scale-up steps, a membrane based digestate treatment process of solid-liquid-separation, ultrafiltration, and reverse osmosis for nutrient recovery was investigated. Lab-scale trials delivered a very good understanding of fluid properties and subsequent ultrafiltration performance, which is the limiting process step in terms of energy demand and operation costs. In semi-technical experiments, optimisation, and design parameters were developed, which were subsequently applied to pilot-scale tests at two full-scale biogas plants. The process optimisation resulted in 50 % energy reduction of the ultrafiltration step. About 36 % of the sludge volume was recovered as dischargeable water, 20 % as solid N/P-fertiliser, and 44 % as liquid N/K-fertiliser.
Piglets experience a high level of stress during the onset of the fattening phase due to changes in social structures and feeding. Incorporation of flavors in the feed supports constant levels of feed intake thus avoiding drops in performance. This study aimed to evaluate if a combination of vanilla and fruity flavors could maintain high interest in variable feeds across different ages. 384 crossbred (Topigs 20 x Piétrain) piglets were separated at weaning into two groups (eight pens per group: four pens with females and four pens with uncastrated males; 24 animals per pen), according to gender and weight. The control group received commercial starter feeds without flavor, while the other group received diets with added flavor (500 g/t Cuxarom Fruit 210, a sweetish, berry multifruit note combined with creamy vanilla). After 49 days, 264 animals from both groups were rehoused and given an early-grower feed with or without added flavor for 7 days. Consequently, animals from the trial group again received flavor-supplemented feed and vice versa. During the early-grower phase, the feed intake of the trial group was 11.2% higher than that of the control group. Moreover, the trial group gained significantly more weight during the early-grower phase (+12.2%) in comparison to the control group. This indicates that the animals prefer the flavor they were familiarized with during the starter phase. This memory effect leads to an increased feed intake and weight gain in early-grower pigs and can counteract drops in performance, particularly when mixing animals or transitioning.
Hintergrund: Sozial benachteiligte Schwangere sind in besonderem Maße vulnerabel. Sie befinden sich wie alle Schwangeren in einer biographischen Übergangssituation und tragen zusätzlich die mit ihrem sozialen Status assoziierten Gesundheitsrisiken. In diesem Zusammenhang stellt insbesondere die Geburtsvorbereitung als gesundheitsfördernde Maßnahme ein wichtiges niedrigschwelliges Angebot der Gesundheitsförderung dar. Denn durch diese kann bereits vor der Geburt die Unterstützung, Beratung und Vernetzung der betroffenen Mädchen und Frauen erfolgen. Die Verbesserung der Inanspruchnahme von Unterstützungsangeboten wie der Hebammenbetreuung setzt Detailwissen um die Bedürfnisse der angesprochenen Personengruppe voraus. Deren Erfassung ist daher ein wesentlicher Schwerpunkt dieser Studie.
Methode: In der qualitativen Studie werden sowohl Frauen und Mädchen in schwierigen Lebenssituationen (n=19) zu ihren Bedürfnissen und Erfahrungen in der Schwangerschaft als auch Expertinnen, Familienhebammen und ein Sozialpädagoge retrospektiv teilstrukturiert befragt (n=7). Ergänzt werden die Aussagen durch Angebotsanalysen aus ausgewählten Städten und Gemeinden (n=7). Die Auswertung der Studie ist angelehnt an die Technik der Grounded Theory.
Ergebnisse: Die Bedürfnisse der befragten Frauen und Mädchen in der Schwangerschaft sind komplex und weisen in ihren speziellen Ausprägungen besondere thematische Schwerpunkte auf. Durch die meist prekären Lebensverhältnisse stehen Sicherheitsbedürfnisse im Vordergrund. Soziale Beziehungen und die Rollenfindung als Mutter sind gleichfalls wichtige Themen, weil die Frauen von Diskriminierung betroffen sind oder diese befürchten. Das Informationsbedürfnis bezieht sich schwerpunktmäßig auf gegenwärtige Phänomene und Erfahrungen. Viele der geäußerten Bedürfnisse werden sowohl an die Menschen des sozialen Umfelds als auch an Mitarbeiter der Beratungsstellen oder Akteure des Gesundheitswesens adressiert. Hebammen bieten sich durch ihre spezielle Arbeitsstruktur insbesondere dann als Ansprechpartner an, wenn die Kontakte zu Familienmitgliedern oder den Menschen des direkten sozialen Umfelds unsicher sind. Übliche Geburtsvorbereitungskurse treffen nur bedingt die Interessen der Befragten und bringen das Risiko einer Ausgrenzung durch die Gruppe mit sich. Die Interviews mit den Expertinnen sowie die Angebotsanalysen zeigen außerdem, dass die Vernetzung der Professionen des Gesundheits- und Sozialwesens und eine Überweisung zu passgenauen Angeboten nur unzureichend realisiert sind.
Ausgewählte Empfehlungen: Die speziellen Bedürfnisse der schwangeren Frauen und Mädchen in besonderen Lebenssituationen bedürfen einer inhaltlich abgestimmten Vernetzung von Ärzten, Hebammen und Beratern. Geburtsvorbereitungskurse sollten neben den üblichen curricularen Inhalten die Chance berücksichtigen, dass Frauen eine neue soziale Rolle im unkomplizierten Beisammensein mit anderen neu definieren und erproben können. Die thematischen Schwerpunkte sollten das Wachstum des Kindes und zeitnahe Erfahrungen in den Vordergrund stellen.
Nostalgia is a construct that, even when rooted in lived experiences, serves the ultimate purpose of creating a desired sense of world. Fundamental cognitive competencies, including memory and imagination, are utilized by the nostalgic subject to fulfill a need for narrative coherence. A temporal or spatial distance is necessary for the occurrence of a nostalgic episode, which can be conceptualized as a “had been” state of being, as direct access to the experience is often impossible. Nostalgia may thus be viewed as a tool for sense-making rather than solely as a yearning for the past. The nostalgic narrative form is a construct that permits human subjects to comprehend their existence in the world while drawing upon their roots. These tools for sense-making serve as bridges between past experiences and current conditions. Ultimately, nostalgic identity is not just about longing for the past but also about utilizing the past as a resource for navigating the labyrinths of the present. Analyses are conducted to examine the medium of music video at three levels - auditory, visual, and linguistic - in order to investigate the strategies and techniques employed by the Iranian diaspora to create nostalgic narratives. Samples of original pieces and renditions are contrasted in order to identify elements of nostalgic narrativity. Drawing on empirical research, it is argued that the unity of a music video arises from the integration of separate layers of sensory and conceptual inputs that have been composed towards an affective resonance and narrative coherence.
Neurotension – Gestern und Heute. Wie ist der momentane Kenntnisstand, und wie setze ich ihn um?
(2018)
Knowledge of the maximum friction coefficient µmax between tire and road is necessary for implementing autonomous driving. As this coefficient cannot be measured via existing serial vehicle sensors, µmax estimation is a challenging field in modern automotive research. In particular, model-based approaches are applied, which are limited in the estimation accuracy by the physical vehicle model. Therefore, this paper presents a data-based µmax estimation using serial vehicle sensors. For this purpose, recurrent artificial neural networks are trained, validated, and tested based on driving maneuvers carried out with a test vehicle showing improved results compared to the model-based algorithm from previous works.
This paper presents a framework for OMNeT++ which includes time synchronization model for WLANs. Synchronization is based on the Generalized Precision Time Protocol (gPTP) standard, which aims to achieve an accuracy of less than 100 nanoseconds. The presented model is developed and implemented in OMNeT++, a discrete event network simulator, using its INET library. A new type of WLAN node is modeled which supports time synchronization at the Link layer. A clock module for WLAN nodes is also modeled which implements variable clock drift to simulate noise interference in clock frequency oscillators. Simulations with our WLAN nodes are done and the results show that using gPTP based time synchronization in wireless networks, accuracy of ±3ns can be achieved.
Auf vielen Landmaschinen wird der CAN-Bus zur Übertragung von Daten zwischen Sensoren, Aktoren und Steuergeräten genutzt. Anwendungen wie Rückfahrkameras und Bird-ViewAnzeigen erfordern in der Regel zusätzliche, breitbandige Kommunikationskanäle. Dieser Beitrag untersucht, inwieweit ein gemeinschaftliches Kommunikationsmedium auf Basis von Ethernet zur Realisierung aktueller und zukünftiger Anwendungen auf Landmaschinen genutzt werden kann. Zusätzlich wird der Einsatz aktueller Technologien wie Audio/Video Bridging, Time-Sensitive Networking und Wifi auf einem Landmaschinengespann untersucht und bewertet.