Numerical study of cancer cell invasion dynamics using adaptive mesh refinement: the urokinase model

In the present work we investigate the chemotactically and proteolytically driven tissue invasion by cancer cells. The model employed is a system of advection-reaction-diffusion equations that features the role of the serine protease urokinase-type plasminogen activator. The analytical and numerical study of this system constitutes a challenge due to the merging, emerging, and travelling concentrations that the solutions exhibit. Classical numerical methods applied to this system necessitate very fine discretization grids to resolve these dynamics in an accurate way. To reduce the computational cost without sacrificing the accuracy of the solution, we apply adaptive mesh refinement techniques, in particular h-refinement. Extended numerical experiments exhibit that this approach provides with a higher order, stable, and robust numerical method for this system. We elaborate on several mesh refinement criteria and compare the results with the ones in the literature. We prove, for a simpler version of this model, $L^\infty$ bounds for the solutions, we study the stability of its conditional steady states, and conclude that it can serve as a test case for further development of mesh refinement techniques for cancer invasion simulations

Berichte aus dem Ökolandbau 2021 - Nährstoffmanagement und Fruchtfolgegestaltung in sächsischen Ökobetrieben: Analyse des Nährstoff- und Humusmanagements sowie der Fruchtfolgegestaltung in 32 Betrieben des ökologischen Landbaus im Freistaat Sachsen

In dieser Untersuchung wurden Daten zur Nährstoff- und Humusversorgung sowie zur Fruchtfolgegestaltung von ökologisch wirtschaftenden Landwirtschaftsbetrieben im Freistaat Sachsen über einen Zeitraum von 6 Jahren gesammelt und ausgewertet. Insgesamt stand Datenmaterial von 810 ökologisch bewirtschaften Acker- und Grünlandschlägen und mehr als 4.800 Ernten zur Verfügung. Die Beurteilung des Nährstoff- und Humusmanagement erfolgte auf Schlag- und Betriebsebene für den pH-Wert und die Grundnährstoffe des Bodens. Ergänzend wurden Nährstoff- und Humusbilanzen sowie der Düngebedarf mit dem Programm BEFU, Teil Ökolandbau, berechnet. Für die Beurteilung des Fruchtfolgemanagements wurde ein geeignetes Bewertungsverfahren entwickelt und angewendet, mit dem der Erfüllungsgrad von Aufgaben und Regeln der Fruchtfolgegestaltung durch leicht erfass- und überprüfbare Kriterien abgeschätzt werden konnte.:1 Einleitung und Problemstellung 2 Material und Methoden 2.1 Datengrundlage 2.2 Bewertung des Nährstoff- und Humusmanagements 2.3 Bewertung der Fruchtfolgegestaltung 2.4 Statistische Verrechnung 3 Ergebnisse 3.1 Analyse des Nährstoff- und Anbaumanagements auf Betriebsebene 3.2 Schlagbezogene Bewertung des Nährstoff- und Anbaumanagements 3.3 Betriebsvergleich der schlagbezogenen Bewertung 4 Diskussion und Schlussfolgerungen 4.1 Methodik 4.2 Nährstoff- und Humusmanagement der Betriebe 4.3 Fruchtfolgegestaltung der Betriebe 5 Zusammenfassung 6 Literaturverzeichni

APOSTEL 2.0 Recommendations for Reporting Quantitative Optical Coherence Tomography Studies.

OBJECTIVE To update the consensus recommendations for reporting of quantitative optical coherence tomography (OCT) study results, thus revising the previously published Advised Protocol for OCT Study Terminology and Elements (APOSTEL) recommendations. METHODS To identify studies reporting quantitative OCT results, we performed a PubMed search for the terms "quantitative" and "optical coherence tomography" from 2015 to 2017. Corresponding authors of the identified publications were invited to provide feedback on the initial APOSTEL recommendations via online surveys following the principle of a modified Delphi method. The results were evaluated and discussed by a panel of experts and changes to the initial recommendations were proposed. A final survey was recirculated among the corresponding authors to obtain a majority vote on the proposed changes. RESULTS A total of 116 authors participated in the surveys, resulting in 15 suggestions, of which 12 were finally accepted and incorporated into an updated 9-point checklist. We harmonized the nomenclature of the outer retinal layers, added the exact area of measurement to the description of volume scans, and suggested reporting device-specific features. We advised to address potential bias in manual segmentation or manual correction of segmentation errors. References to specific reporting guidelines and room light conditions were removed. The participants' consensus with the recommendations increased from 80% for the previous APOSTEL version to greater than 90%. CONCLUSIONS The modified Delphi method resulted in an expert-led guideline (evidence Class III; Grading of Recommendations, Assessment, Development and Evaluations [GRADE] criteria) concerning study protocol, acquisition device, acquisition settings, scanning protocol, funduscopic imaging, postacquisition data selection, postacquisition analysis, nomenclature and abbreviations, and statistical approach. It will be essential to update these recommendations to new research and practices regularly

Human Practice. Digital Ecologies. Our Future. : 14. Internationale Tagung Wirtschaftsinformatik (WI 2019) : Tagungsband

Erschienen bei: universi - Universitätsverlag Siegen. - ISBN: 978-3-96182-063-4Aus dem Inhalt: Track 1: Produktion & Cyber-Physische Systeme Requirements and a Meta Model for Exchanging Additive Manufacturing Capacities Service Systems, Smart Service Systems and Cyber- Physical Systems—What’s the difference? Towards a Unified Terminology Developing an Industrial IoT Platform – Trade-off between Horizontal and Vertical Approaches Machine Learning und Complex Event Processing: Effiziente Echtzeitauswertung am Beispiel Smart Factory Sensor retrofit for a coffee machine as condition monitoring and predictive maintenance use case Stakeholder-Analyse zum Einsatz IIoT-basierter Frischeinformationen in der Lebensmittelindustrie Towards a Framework for Predictive Maintenance Strategies in Mechanical Engineering - A Method-Oriented Literature Analysis Development of a matching platform for the requirement-oriented selection of cyber physical systems for SMEs Track 2: Logistic Analytics An Empirical Study of Customers’ Behavioral Intention to Use Ridepooling Services – An Extension of the Technology Acceptance Model Modeling Delay Propagation and Transmission in Railway Networks What is the impact of company specific adjustments on the acceptance and diffusion of logistic standards? Robust Route Planning in Intermodal Urban Traffic Track 3: Unternehmensmodellierung & Informationssystemgestaltung (Enterprise Modelling & Information Systems Design) Work System Modeling Method with Different Levels of Specificity and Rigor for Different Stakeholder Purposes Resolving Inconsistencies in Declarative Process Models based on Culpability Measurement Strategic Analysis in the Realm of Enterprise Modeling – On the Example of Blockchain-Based Initiatives for the Electricity Sector Zwischenbetriebliche Integration in der Möbelbranche: Konfigurationen und Einflussfaktoren Novices’ Quality Perceptions and the Acceptance of Process Modeling Grammars Entwicklung einer Definition für Social Business Objects (SBO) zur Modellierung von Unternehmensinformationen Designing a Reference Model for Digital Product Configurators Terminology for Evolving Design Artifacts Business Role-Object Specification: A Language for Behavior-aware Structural Modeling of Business Objects Generating Smart Glasses-based Information Systems with BPMN4SGA: A BPMN Extension for Smart Glasses Applications Using Blockchain in Peer-to-Peer Carsharing to Build Trust in the Sharing Economy Testing in Big Data: An Architecture Pattern for a Development Environment for Innovative, Integrated and Robust Applications Track 4: Lern- und Wissensmanagement (e-Learning and Knowledge Management) eGovernment Competences revisited – A Literature Review on necessary Competences in a Digitalized Public Sector Say Hello to Your New Automated Tutor – A Structured Literature Review on Pedagogical Conversational Agents Teaching the Digital Transformation of Business Processes: Design of a Simulation Game for Information Systems Education Conceptualizing Immersion for Individual Learning in Virtual Reality Designing a Flipped Classroom Course – a Process Model The Influence of Risk-Taking on Knowledge Exchange and Combination Gamified Feedback durch Avatare im Mobile Learning Alexa, Can You Help Me Solve That Problem? - Understanding the Value of Smart Personal Assistants as Tutors for Complex Problem Tasks Track 5: Data Science & Business Analytics Matching with Bundle Preferences: Tradeoff between Fairness and Truthfulness Applied image recognition: guidelines for using deep learning models in practice Yield Prognosis for the Agrarian Management of Vineyards using Deep Learning for Object Counting Reading Between the Lines of Qualitative Data – How to Detect Hidden Structure Based on Codes Online Auctions with Dual-Threshold Algorithms: An Experimental Study and Practical Evaluation Design Features of Non-Financial Reward Programs for Online Reviews: Evaluation based on Google Maps Data Topic Embeddings – A New Approach to Classify Very Short Documents Based on Predefined Topics Leveraging Unstructured Image Data for Product Quality Improvement Decision Support for Real Estate Investors: Improving Real Estate Valuation with 3D City Models and Points of Interest Knowledge Discovery from CVs: A Topic Modeling Procedure Online Product Descriptions – Boost for your Sales? Entscheidungsunterstützung durch historienbasierte Dienstreihenfolgeplanung mit Pattern A Semi-Automated Approach for Generating Online Review Templates Machine Learning goes Measure Management: Leveraging Anomaly Detection and Parts Search to Improve Product-Cost Optimization Bedeutung von Predictive Analytics für den theoretischen Erkenntnisgewinn in der IS-Forschung Track 6: Digitale Transformation und Dienstleistungen Heuristic Theorizing in Software Development: Deriving Design Principles for Smart Glasses-based Systems Mirroring E-service for Brick and Mortar Retail: An Assessment and Survey Taxonomy of Digital Platforms: A Platform Architecture Perspective Value of Star Players in the Digital Age Local Shopping Platforms – Harnessing Locational Advantages for the Digital Transformation of Local Retail Outlets: A Content Analysis A Socio-Technical Approach to Manage Analytics-as-a-Service – Results of an Action Design Research Project Characterizing Approaches to Digital Transformation: Development of a Taxonomy of Digital Units Expectations vs. Reality – Benefits of Smart Services in the Field of Tension between Industry and Science Innovation Networks and Digital Innovation: How Organizations Use Innovation Networks in a Digitized Environment Characterising Social Reading Platforms— A Taxonomy-Based Approach to Structure the Field Less Complex than Expected – What Really Drives IT Consulting Value Modularity Canvas – A Framework for Visualizing Potentials of Service Modularity Towards a Conceptualization of Capabilities for Innovating Business Models in the Industrial Internet of Things A Taxonomy of Barriers to Digital Transformation Ambidexterity in Service Innovation Research: A Systematic Literature Review Design and success factors of an online solution for cross-pillar pension information Track 7: IT-Management und -Strategie A Frugal Support Structure for New Software Implementations in SMEs How to Structure a Company-wide Adoption of Big Data Analytics The Changing Roles of Innovation Actors and Organizational Antecedents in the Digital Age Bewertung des Kundennutzens von Chatbots für den Einsatz im Servicedesk Understanding the Benefits of Agile Software Development in Regulated Environments Are Employees Following the Rules? On the Effectiveness of IT Consumerization Policies Agile and Attached: The Impact of Agile Practices on Agile Team Members’ Affective Organisational Commitment The Complexity Trap – Limits of IT Flexibility for Supporting Organizational Agility in Decentralized Organizations Platform Openness: A Systematic Literature Review and Avenues for Future Research Competence, Fashion and the Case of Blockchain The Digital Platform Otto.de: A Case Study of Growth, Complexity, and Generativity Track 8: eHealth & alternde Gesellschaft Security and Privacy of Personal Health Records in Cloud Computing Environments – An Experimental Exploration of the Impact of Storage Solutions and Data Breaches Patientenintegration durch Pfadsysteme Digitalisierung in der Stressprävention – eine qualitative Interviewstudie zu Nutzenpotenzialen User Dynamics in Mental Health Forums – A Sentiment Analysis Perspective Intent and the Use of Wearables in the Workplace – A Model Development Understanding Patient Pathways in the Context of Integrated Health Care Services - Implications from a Scoping Review Understanding the Habitual Use of Wearable Activity Trackers On the Fit in Fitness Apps: Studying the Interaction of Motivational Affordances and Users’ Goal Orientations in Affecting the Benefits Gained Gamification in Health Behavior Change Support Systems - A Synthesis of Unintended Side Effects Investigating the Influence of Information Incongruity on Trust-Relations within Trilateral Healthcare Settings Track 9: Krisen- und Kontinuitätsmanagement Potentiale von IKT beim Ausfall kritischer Infrastrukturen: Erwartungen, Informationsgewinnung und Mediennutzung der Zivilbevölkerung in Deutschland Fake News Perception in Germany: A Representative Study of People’s Attitudes and Approaches to Counteract Disinformation Analyzing the Potential of Graphical Building Information for Fire Emergency Responses: Findings from a Controlled Experiment Track 10: Human-Computer Interaction Towards a Taxonomy of Platforms for Conversational Agent Design Measuring Service Encounter Satisfaction with Customer Service Chatbots using Sentiment Analysis Self-Tracking and Gamification: Analyzing the Interplay of Motivations, Usage and Motivation Fulfillment Erfolgsfaktoren von Augmented-Reality-Applikationen: Analyse von Nutzerrezensionen mit dem Review-Mining-Verfahren Designing Dynamic Decision Support for Electronic Requirements Negotiations Who is Stressed by Using ICTs? A Qualitative Comparison Analysis with the Big Five Personality Traits to Understand Technostress Walking the Middle Path: How Medium Trade-Off Exposure Leads to Higher Consumer Satisfaction in Recommender Agents Theory-Based Affordances of Utilitarian, Hedonic and Dual-Purposed Technologies: A Literature Review Eliciting Customer Preferences for Shopping Companion Apps: A Service Quality Approach The Role of Early User Participation in Discovering Software – A Case Study from the Context of Smart Glasses The Fluidity of the Self-Concept as a Framework to Explain the Motivation to Play Video Games Heart over Heels? An Empirical Analysis of the Relationship between Emotions and Review Helpfulness for Experience and Credence Goods Track 11: Information Security and Information Privacy Unfolding Concerns about Augmented Reality Technologies: A Qualitative Analysis of User Perceptions To (Psychologically) Own Data is to Protect Data: How Psychological Ownership Determines Protective Behavior in a Work and Private Context Understanding Data Protection Regulations from a Data Management Perspective: A Capability-Based Approach to EU-GDPR On the Difficulties of Incentivizing Online Privacy through Transparency: A Qualitative Survey of the German Health Insurance Market What is Your Selfie Worth? A Field Study on Individuals’ Valuation of Personal Data Justification of Mass Surveillance: A Quantitative Study An Exploratory Study of Risk Perception for Data Disclosure to a Network of Firms Track 12: Umweltinformatik und nachhaltiges Wirtschaften Kommunikationsfäden im Nadelöhr – Fachliche Prozessmodellierung der Nachhaltigkeitskommunikation am Kapitalmarkt Potentiale und Herausforderungen der Materialflusskostenrechnung Computing Incentives for User-Based Relocation in Carsharing Sustainability’s Coming Home: Preliminary Design Principles for the Sustainable Smart District Substitution of hazardous chemical substances using Deep Learning and t-SNE A Hierarchy of DSMLs in Support of Product Life-Cycle Assessment A Survey of Smart Energy Services for Private Households Door-to-Door Mobility Integrators as Keystone Organizations of Smart Ecosystems: Resources and Value Co-Creation – A Literature Review Ein Entscheidungsunterstützungssystem zur ökonomischen Bewertung von Mieterstrom auf Basis der Clusteranalyse Discovering Blockchain for Sustainable Product-Service Systems to enhance the Circular Economy Digitale Rückverfolgbarkeit von Lebensmitteln: Eine verbraucherinformatische Studie Umweltbewusstsein durch audiovisuelles Content Marketing? Eine experimentelle Untersuchung zur Konsumentenbewertung nachhaltiger Smartphones Towards Predictive Energy Management in Information Systems: A Research Proposal A Web Browser-Based Application for Processing and Analyzing Material Flow Models using the MFCA Methodology Track 13: Digital Work - Social, mobile, smart On Conversational Agents in Information Systems Research: Analyzing the Past to Guide Future Work The Potential of Augmented Reality for Improving Occupational First Aid Prevent a Vicious Circle! The Role of Organizational IT-Capability in Attracting IT-affine Applicants Good, Bad, or Both? Conceptualization and Measurement of Ambivalent User Attitudes Towards AI A Case Study on Cross-Hierarchical Communication in Digital Work Environments ‘Show Me Your People Skills’ - Employing CEO Branding for Corporate Reputation Management in Social Media A Multiorganisational Study of the Drivers and Barriers of Enterprise Collaboration Systems-Enabled Change The More the Merrier? The Effect of Size of Core Team Subgroups on Success of Open Source Projects The Impact of Anthropomorphic and Functional Chatbot Design Features in Enterprise Collaboration Systems on User Acceptance Digital Feedback for Digital Work? Affordances and Constraints of a Feedback App at InsurCorp The Effect of Marker-less Augmented Reality on Task and Learning Performance Antecedents for Cyberloafing – A Literature Review Internal Crowd Work as a Source of Empowerment - An Empirical Analysis of the Perception of Employees in a Crowdtesting Project Track 14: Geschäftsmodelle und digitales Unternehmertum Dividing the ICO Jungle: Extracting and Evaluating Design Archetypes Capturing Value from Data: Exploring Factors Influencing Revenue Model Design for Data-Driven Services Understanding the Role of Data for Innovating Business Models: A System Dynamics Perspective Business Model Innovation and Stakeholder: Exploring Mechanisms and Outcomes of Value Creation and Destruction Business Models for Internet of Things Platforms: Empirical Development of a Taxonomy and Archetypes Revitalizing established Industrial Companies: State of the Art and Success Principles of Digital Corporate Incubators When 1+1 is Greater than 2: Concurrence of Additional Digital and Established Business Models within Companies Special Track 1: Student Track Investigating Personalized Price Discrimination of Textile-, Electronics- and General Stores in German Online Retail From Facets to a Universal Definition – An Analysis of IoT Usage in Retail Is the Technostress Creators Inventory Still an Up-To-Date Measurement Instrument? Results of a Large-Scale Interview Study Application of Media Synchronicity Theory to Creative Tasks in Virtual Teams Using the Example of Design Thinking TrustyTweet: An Indicator-based Browser-Plugin to Assist Users in Dealing with Fake News on Twitter Application of Process Mining Techniques to Support Maintenance-Related Objectives How Voice Can Change Customer Satisfaction: A Comparative Analysis between E-Commerce and Voice Commerce Business Process Compliance and Blockchain: How Does the Ethereum Blockchain Address Challenges of Business Process Compliance? Improving Business Model Configuration through a Question-based Approach The Influence of Situational Factors and Gamification on Intrinsic Motivation and Learning Evaluation von ITSM-Tools für Integration und Management von Cloud-Diensten am Beispiel von ServiceNow How Software Promotes the Integration of Sustainability in Business Process Management Criteria Catalog for Industrial IoT Platforms from the Perspective of the Machine Tool Industry Special Track 3: Demos & Prototyping Privacy-friendly User Location Tracking with Smart Devices: The BeaT Prototype Application-oriented robotics in nursing homes Augmented Reality for Set-up Processe Mixed Reality for supporting Remote-Meetings Gamification zur Motivationssteigerung von Werkern bei der Betriebsdatenerfassung Automatically Extracting and Analyzing Customer Needs from Twitter: A “Needmining” Prototype GaNEsHA: Opportunities for Sustainable Transportation in Smart Cities TUCANA: A platform for using local processing power of edge devices for building data-driven services Demonstrator zur Beschreibung und Visualisierung einer kritischen Infrastruktur Entwicklung einer alltagsnahen persuasiven App zur Bewegungsmotivation für ältere Nutzerinnen und Nutzer A browser-based modeling tool for studying the learning of conceptual modeling based on a multi-modal data collection approach Exergames & Dementia: An interactive System for People with Dementia and their Care-Network Workshops Workshop Ethics and Morality in Business Informatics (Workshop Ethik und Moral in der Wirtschaftsinformatik – EMoWI’19) Model-Based Compliance in Information Systems - Foundations, Case Description and Data Set of the MobIS-Challenge for Students and Doctoral Candidates Report of the Workshop on Concepts and Methods of Identifying Digital Potentials in Information Management Control of Systemic Risks in Global Networks - A Grand Challenge to Information Systems Research Die Mitarbeiter von morgen - Kompetenzen künftiger Mitarbeiter im Bereich Business Analytics Digitaler Konsum: Herausforderungen und Chancen der Verbraucherinformati

Die Alterung von Klebungen: Ein Überblick

Bis man in der Lage ist, die Alterung von Klebverbindungen vorhersagen zu können, sind noch viele Fragestellungen zu klären. Aber es ist schon heute möglich, Teilaspekte herauszulösen und detalliert zu beachten. Moderne Analysemöglickeiten und die Erkenntnisse aus unterschiedlichen Wissenschaftszweigen wie beispielsweise der Kinetik eröffnen neu8e Möglichkeiten zur Aufklärung und Vorhersage vin Alterungsvorgängen von Klebstoffen und Klebverbindungen. Am Fraunhofer- Institut IFAM werden viele dieser neuen Ansätze verfolgt, um die Vorhersage des Langzeitverhaltens von Klebverbindungen zu verbessern und somit die Optimierung und Ausweitung des Einsatzes der Klebtechnik insbesondere in sicherheitsrelevanten Anwendungen zu ermöglichen

Entwicklung der professionellen Tätigkeit von Pflegepersonen im Angestelltenverhältnis im Vergleich zu traditionellen Pflegefamilien und zu familiennahen Kleinsteinrichtungen der Heimerziehung

Die Studie vergleicht verschiedene stationäre (familiale und familienähnliche) Betreuungsformen in der Jugendhilfe exemplarisch einem Vergleich. Diese sind: - herkömmliche Pflegeverhältnisse (Dauerpflegeverhältnisse nach § 33 SGB VIII), - Betreuungsverhältnisse in familienähnlichen Kleinsteinrichtungen der Heimerziehung (§ 34 SGB VIII), Pflegeverhältnisse auf der Basis eines Angestelltenverhältnisses (Dauerpflegeverhältnisse nach § 33 Satz 2 SGB VIII, hervorgegangen aus dem Modellprojekt des Vereins zur Förderung des Pflegekinderwesens in Mecklenburg-Vorpommern e.V. (VFP e.V.): „Professionelle Pflegeperson im Angestelltenverhältnis für besonders entwicklungsbeeinträchtigte Kinder und Jugendliche"). Sie untersucht die Zweckmäßigkeit und die Sinnhaftigkeit der neuen und der bereits bestehenden Angebotsformen im Bereich der Vollzeitpflege und vergleichbarer Hilfen der Heimerziehung unter Verwendung eines qualitativen Forschungsparadigmas. Die entwickelten Fragestellungen werden durch die kontinuierliche Begleitforschung von Betreuungsverhältnissen über drei Erhebungszeitpunkte hinweg beantwortet. Aus der Analyse heraus werden Möglichkeiten und Grenzen der Betreuungsformen gegenübergestellt und Anregungen bezüglich einer Weiterentwicklung der stationären Hilfen zur Erziehung gegebenThe study compares multiple fixed forms of foster childcare (familial and quasi-familial) that are exemplary of typical contrasts within the youth care system. These are: traditional foster care relationships (long-term foster care relationships according to § 33 SGB VIII), foster care relationships within the quasi-familial setting of a "Kleinsteinrichtung"- a small group home (§ 34 SGB VIII), foster care relationships based upon an employed position (long-term childcare according to § 33 Sentence 2 SGB VIII, derived from the model project belonging to the Association for the Advancement of Foster Children in Mecklenburg-Pommerania e.V. (VFP e.V.): "Professionally employed caregivers for exceptionally developmentally-impaired children and youths"). The study uses a qualitative research paradigm to examine the usefulness and rationality of the upcoming and currently available options in the domain of full-time foster care and comparable home aids. Along with concomitant research, separate families were surveyed three times to answer questions regarding caretaking relationships. Many eventualities and limitations of the various caretaking forms, gleaned from the analysis, are confronted within the text, and suggestions are given for the further development of permanent child-rearing assistance

Bei Raumtemperatur härtbare Epoxidharzzusammensetzung

Die vorliegende Erfindung betrifft einen Zwei-Komponenten-Kit, der eine Komponente K1 und eine Komponente K2 umfasst, wobei die Komponente K1 ein Epoxidharz EP1 und zwei der drei folgenden Additive A1-A3 enthält:A1: ein Reduktionsmittel, wobei das Reduktionsmittel ein alpha-Hydroxyketon, ein Silan und/oder eine aromatische Carbonsäure ist,A2: eine Onium-Verbindung,A3: eine redox-aktive Metallverbindung, und die Komponente K2 dasjenige Additiv der drei Additive A1-A3, das in der Komponente K1 nicht vorliegt, enthält

Die Ökostange im Holzbau

Gewindestangen und Bewehrungsstäbe aus Stahl haben sich für Verbindungen im Holzbau zwar bewährt, lassen aber in puncto ökologisch nachhaltiger Nutzung zu wünschen übrig. Jetzt wurden Untersuchungen zum Einkleben von Hartholzstäben in Laubholz angestellt- und zwar unter Berwendung von ökologischen Klebstoffen

Nährstoffmanagement und Frucht-folgegestaltung in sächsischen Ökobetrieben

In dieser Untersuchung wurden Daten zur Nährstoff- und Humusversorgung sowie zur Fruchtfolgegestaltung von ökologisch wirtschaftenden Landwirtschaftsbetrieben im Freistaat Sachsen über einen Zeitraum von 6 Jahren gesammelt und ausgewertet. Insgesamt stand Datenmaterial von 810 ökologisch bewirtschaften Acker- und Grünlandschlägen und mehr als 4.800 Ernten zur Verfügung. Die Beurteilung des Nährstoff- und Humusmanagement erfolgte auf Schlag- und Betriebsebene für den pH-Wert und die Grundnährstoffe des Bodens. Ergänzend wurden Nährstoff- und Humusbilanzen sowie der Düngebedarf mit dem Programm BEFU, Teil Ökolandbau, berechnet. Für die Beurteilung des Fruchtfolgemanagements wurde ein geeignetes Bewertungsverfahren entwickelt und angewendet, mit dem der Erfüllungsgrad von Aufgaben und Regeln der Fruchtfolgegestaltung durch leicht erfass- und überprüfbare Kriterien abgeschätzt werden konnte