Search results for "Switzerland"

Hits ?▲	Authors	Title	Venue	Year	Link
15	Jie Chen 0010, Robert G. Edwards, Weizhen Mao	Graph Contractions for Calculating Correlation Functions in Lattice QCD.	PASC	2023	DBLP DOI BibTeX RDF
15	Aristeidis Tsaris, Joshua Romero, Thorsten Kurth, Jacob D. Hinkle, Hong-Jun Yoon, Feiyi Wang, Sajal Dash, Georgia D. Tourassi	Scaling Resolution of Gigapixel Whole Slide Images Using Spatial Decomposition on Convolutional Neural Networks.	PASC	2023	DBLP DOI BibTeX RDF
15	Roman Gruber, Anton Kozhevnikov, Marina Marinkovic, Thomas C. Schulthess, Raffaele Solcà	Towards Lattice QCD+QED Simulations on GPUs.	PASC	2023	DBLP DOI BibTeX RDF
15	Aidan Hamilton, Jing-Mei Qiu, Hong Zhang	Scalable Riemann Solvers with the Discontinuous Galerkin Method for Hyperbolic Network Simulation.	PASC	2023	DBLP DOI BibTeX RDF
15	Mikaela Cashman, Verónica G. Melesse Vergara, John H. Lagergren, Matthew Lane, Jean Merlet, Mikaela Atkinson, Jared Streich, Christopher E. Bradburne, Raina Plowright, Wayne Joubert, Daniel A. Jacobson	Longitudinal Effects on Plant Species Involved in Agriculture and Pandemic Emergence Undergoing Changes in Abiotic Stress.	PASC	2023	DBLP DOI BibTeX RDF
15	Pasquale De Rosa, Pascal Felber, Valerio Schiavoni	Practical Forecasting of Cryptocoins Timeseries using Correlation Patterns.	DEBS	2023	DBLP DOI BibTeX RDF
15	Boris Koldehofe	Accelerating the performance of distributed stream processing systems with in-network computing.	DEBS	2023	DBLP DOI BibTeX RDF
15	João Esteves, Rosa Maria Costa, Yongluan Zhou, Ana Almeida	An exploratory analysis of methods for real-time data deduplication in streaming processes.	DEBS	2023	DBLP DOI BibTeX RDF
15	Edmon Begoli, Edmon Meyer, Pablo Moriano, Sean Oesch	Poster: Cognitive Cyber - Dynamic, Adaptive Cyber Defense Systems for Massively Distributed, Autonomous, and Ad-hoc Computing Environments.	DEBS	2023	DBLP DOI BibTeX RDF
15	Stefanos Kalogerakis, Kostas Magoutis	Discovery of breakout patterns in financial tick data via parallel stream processing with in-order guarantees.	DEBS	2023	DBLP DOI BibTeX RDF
15	Martin Hilgendorf, Vincenzo Gulisano, Marina Papatriantafilou, Jan Engström, Binay Mishra	FORTE: an extensible framework for robustness and efficiency in data transfer pipelines.	DEBS	2023	DBLP DOI BibTeX RDF
15	Gözde Ayse Tataroglu Özbulak	Decentralized Stream Reasoning Agents.	DEBS	2023	DBLP DOI BibTeX RDF
15	Patrick Laskowski, Peter Detzner, Steffen Bondorf	Tree-structured Overlays with Minimal Height: Construction, Maintenance and Operation.	DEBS	2023	DBLP DOI BibTeX RDF
15	Arthur Navarro, Julien Ponge, Frédéric Le Mouël, Clément Escoffier	Considerations for integrating virtual threads in a Java framework: a Quarkus example in a resource-constrained environment.	DEBS	2023	DBLP DOI BibTeX RDF
15	Majid Lotfian Delouee, Boris Koldehofe, Viktoriya Degeler	AQuA-CEP: Adaptive Quality-Aware Complex Event Processing in the Internet of Things.	DEBS	2023	DBLP DOI BibTeX RDF
15	Timo Räth, Francesco Bedini, Kai-Uwe Sattler, Armin Zimmermann	Demo: Interactive Performance Exploration of Stream Processing Applications Using Colored Petri Nets.	DEBS	2023	DBLP DOI BibTeX RDF
15	Tania Lorido-Botran	Metastability in the Metaverse.	DEBS	2023	DBLP DOI BibTeX RDF
15	Kenneth Lamar, Alexander V. Goponenko, Omar Aaziz, Benjamin A. Allan, James M. Brandt, Damian Dechev	Evaluating HPC Job Run Time Predictions Using Application Input Parameters.	DEBS	2023	DBLP DOI BibTeX RDF
15	George Siachamis, Kyriakos Psarakis, Marios Fragkoulis, Odysseas Papapetrou, Arie van Deursen, Asterios Katsifodimos	Adaptive Distributed Streaming Similarity Joins.	DEBS	2023	DBLP DOI BibTeX RDF
15	Nikolaos Papadakis, Georgios Bouloukakis, Kostas Magoutis	Demo: ComDeX Unveiled Demonstrating the Future of IoT-Enhanced Communities.	DEBS	2023	DBLP DOI BibTeX RDF
15	Pawel Tomasz Wojciechowski	A selective and biased choice of techniques for building a distributed data store.	DEBS	2023	DBLP DOI BibTeX RDF
15	Nikolaos Papadakis, Georgios Bouloukakis, Kostas Magoutis	ComDeX: A Context-aware Federated Platform for IoT-enhanced Communities.	DEBS	2023	DBLP DOI BibTeX RDF
15	Matthias Prellwitz, Helge Parzyjegla, Gero Mühl	Programming Abstractions for Messaging Protocols in Event-based Systems.	DEBS	2023	DBLP DOI BibTeX RDF
15	Simon Paasche, Sven Groppe	Poster: Handling Inconsistent Data in Industry 4.0.	DEBS	2023	DBLP DOI BibTeX RDF
15	Stuart Jamieson, Matthew Forshaw	On Improving Streaming System Autoscaler Behaviour using Windowing and Weighting Methods.	DEBS	2023	DBLP DOI BibTeX RDF
15	Patrick Eugster	Secure distributed data and event processing at scale: where are we now?	DEBS	2023	DBLP DOI BibTeX RDF
15	Edmon Begoli	Poster: StreamToxWatch - Data Poisoning Detector in Distributed, Event-based Environments.	DEBS	2023	DBLP DOI BibTeX RDF
15	Xianzhi Zeng, Shuhao Zhang 0001	A Hardware-Conscious Stateful Stream Compression Framework for IoT Applications (Vision).	DEBS	2023	DBLP DOI BibTeX RDF
15	Majid Lotfian Delouee, Boris Koldehofe, Viktoriya Degeler	Poster: Towards Pattern-Level Privacy Protection in Distributed Complex Event Processing.	DEBS	2023	DBLP DOI BibTeX RDF
15	He Gu	Towards Guaranteed Privacy in Stream Processing: Differential Privacy for Private Pattern Protection.	DEBS	2023	DBLP DOI BibTeX RDF
15	Mikhail Fomichev, Manisha Luthra, Maik Benndorf, Pratyush Agnihotri	No One Size (PPM) Fits All: Towards Privacy in Stream Processing Systems.	DEBS	2023	DBLP DOI BibTeX RDF
15	Yvonne-Anne Pignolet	Internet Computer Protocol: democratic evolution of a web3 platform.	DEBS	2023	DBLP DOI BibTeX RDF
15	Kristo Raun, Riccardo Tommasini 0001, Ahmed Awad 0001	I Will Survive: An Event-driven Conformance Checking Approach Over Process Streams.	DEBS	2023	DBLP DOI BibTeX RDF
15	Banani Anuraj	Agent-based Orchestration on a Swarm of Edge Devices.	DEBS	2023	DBLP DOI BibTeX RDF
15	Pascal Gerig, Jämes Ménétrey, Baptiste Lanoix, Florian Stoller, Pascal Felber, Marcelo Pasin, Valerio Schiavoni	Preventing EFail Attacks with Client-Side WebAssembly: The Case of Swiss Post's IncaMail.	DEBS	2023	DBLP DOI BibTeX RDF
15	Josef Spillner	Demo: SLASH: Serverless Apache Spark Hub.	DEBS	2023	DBLP DOI BibTeX RDF
15	Johanna Bogon, David Halbhuber	Time and Timing in Video Games: How Video Game and Time Perception Research can benefit each other.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Jonas Pöhler, Antonia Vitt, Nadine Flegel, Tilo Mentler, Kristof Van Laerhoven	Investigating Cognitive Load in Emergency Control Room Simulations.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Bernhard Mayr	Replacing TODO-Comments by Applying Hole-Driven Development to C#: A Proof of Concept.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Julian Ambacher, Luci Fischer, Anand Bihari Gaurav, Maria Pietruschka, Leoni Spreng, Jasmin Wilkes, Theresa Zimmermann, Jakob Peintner, Andreas Riener	Haptic Journey: The integration of gesture-controls and mid-air haptic feedback into ticket machines to foster better hygiene in public spaces.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Michael Koch 0001, Julian Fietkau 0001, Susanne Draheim, Jan Schwarzer, Kai von Luck	Methods and Tools for (Semi-)Automated Evaluation in Long-Term In-the-Wild Deployment Studies.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Lukas Mathes, Coleen Cabalo, Lars Gatzemeyer	Evaluating the engagement of users from public interactive displays.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Linglong Meng, Krutarth Parwal, Stefan Schaffer	Optimization of Swarm Formation in Swarm Cycling.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Marc-André Kaufhold, Markus Bayer, Julian Bäumler, Christian Reuter 0001, Stefan Stieglitz, Ali Sercan Basyurt, Milad Mirbabaie, Christoph Fuchss, Kaan Eyilmez	CYLENCE: Strategies and Tools for Cross-Media Reporting, Detection, and Treatment of Cyberbullying and Hatespeech in Law Enforcement Agencies.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Myriam Bott, Sara Wolf	SustainTourism - Experiencing Tourism From Home.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Thomas Neumayr, Enes Yigitbas, Mirjam Augstein, Eelco Herder	ABIS 2023 - 27th International Workshop on Personalization and Recommendation.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Lu Jin 0003, Alexander Boden	The design space of building user-centered AI user interfaces for smart heating systems.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Jonna Häkkilä, Khaled Kassem, Emma Kirjavainen, Johannes Kraus 0002, Florian Michahelles, Heiko Müller 0002, Bastian Pfleging, Norman Seyffer, Kai Erik Trost	Robots for Public and Social Spaces - Design for Intent Communication, Collaboration and Acceptance.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Emely Rosbach, Muhammad Muhammad, Larin Talabani-Durmus, Muhammed Maral, Carina Ziegler, Hannah Reuter, Alice Lell, Sabrina Hoffer, Jakob Peintner, Andreas Riener	HapTech: Intelligent controls in public spaces through mid-air haptic interaction.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Daria Zhukova, Urszula Kulon	Designing The Technology For Pet Owners' Psychological Safety And Pet Physical Safety: identifying the challenges, needs and conceptualizing solutions for pet location tracking.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Nele Russwinkel, Eva Wiese	Time Matters - Even (more so) in Human-Robot Interactions.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Stefan Schaffer, Linglong Meng, Alaaeddine Hemdane, Katrin Wolf 0001, Dimitra Tsovaltzi, Lara Chehayeb, Patrick Gebhard	An analysis of the effects of swarm cycling on cyclists' stress levels.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Christin Engel, Jan Schmalfuß-Schwarz, David Gollasch, Meinhardt Branig, Susanne Dirks, Gerhard Weber 0002	Workshop on Designing Accessible Extended Reality: An Opportunity for People with Disabilities and Disorders.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Albrecht Kurze, Lewis L. Chuang, Arne Berger, Klaus Stephan, Natalie Sontopski, Stephan Hildebrandt, Elisabeth Jost, Maximilian Eibl	Bitplush: Unleashing the Paws-ibilities of Smart Materials in Smart Plush Toys.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Sven Bittenbinder, Claudia Müller 0002, Zeynep Tuncer	European Accessibility Act - Practice-based approaches to meeting accessibility requirements.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Madeleine Flaucher, Anastasiya Zakreuskaya, Katharina M. Jäger, Robert Richer, Jan David Smeddinck, Devender Kumar, Sophie Grimme, Julia Klein, Robert Hrynyschyn, Bjoern M. Eskofier, Heike Leutheuser	Your Health, Your Data: Combining Interdisciplinary Views, Concepts, and Practices to Empower Patients in Their Engagement With Personal Health Data.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Andreas Schmid 0008, Alexander Kalus, Raphael Wimmer	From Trash to Treasure: Experiences from Building Tangible Artifacts out of Discarded Components.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Sarah Ebert, Anna-Magdalena Krauß, Jürgen Anke	Towards informed choices: A decision model for adaptive warnings in self-sovereign identity.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Andreas Schmid 0008, Rosa van Koningsbruggen, Sarah Delgado Rodriguez, Vitus Maierhöfer, Hannes Waldschütz, Alexander Kalus	16. Workshop Be-greifbare Interaktion.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Andreas Burkard, Jessica Buchem, Verena Kersken, Gottfried Zimmermann	Make Web Accessibility Sustainable by Automated Tools Combined with Live Coaching - Tool-Based Coaching for Web Accessibility.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Florian Mathis, Jolie Bonner, Joseph O'Hagan, Mark McGill	Breaking Boundaries: Harnessing Mixed Reality to Enhance Social Engagement.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Michael Koch 0001, Julian Fietkau 0001, Laura Stojko	Setting up a long term evaluation environment for interactive semi-public information displays.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Niels Henze, David Halbhuber, Jannik Wiese	Faster Might Not be Fast Enough: Improving Users' Experience and Performance through Negative Latency.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Ulrich Waldmann, Thomas Kunz, Janine Schleper, Matthias Kohn, Paulina Jo Pesch	Legal Requirements and Technical Metrics for Controlling Privacy of Employees' Location Data.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Matthias Müller, Bogdan Franczyk, Jens Weiland	Entscheidungsunterstützungssysteme in der Produktentwicklung von Unternehmen.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Zion Hannah Krullaars, Adinda Januardani, Lin Zhou, Eva Jonkers	Exploring Initial Interactions: High School Students and Generative AI Chatbots for Relationship Development.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Leonard Schmidt, Enes Yigitbas	Transitional Cross Reality Interfaces for Spatially Demanding Search and Collect Tasks.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Sana Hassan Imam, Christopher A. Metz, Lars Hornuf, Rolf Drechsler	Classifying Crowdsouring Platform Users' Engagement Behaviour using Machine Learning and XAI.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Franziska Günther, Mirjam Landowski, Frauke Mörike	Hybride Kollaboration in Inklusiven Arbeitssystemen: Standortbestimmung und Ausblick.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Wolfgang Buhl, Viktor Buller, Klaas-Frederik Engel	Evaluation of a gamification approach for increasing interaction with public displays.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Luigi Lo Iacono, Hartmut Schmitt, Denis Feth, Andreas Heinemann	9. Usable Security und Privacy Workshop.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Linh Tuan Mai, David Gollasch, Constantin Boß, Heiko Werdin	Transferring Real Operating Concepts Into Virtual Reality for Neurodiverse Learners.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Johannes Sautter, Andreas Münzner, Rebecca Litauer, Björn Setzer, Ross Staton, David Disch, Ekaterina Dobrokhotova, Albert Wiedemann	Frühes gemeinsames Lagebild durch autonom fliegende Drohnen: Evaluation möglicher Einsatztaktik und Mensch-Technik-Interaktion anhand eines Tankstellen- sowie eines Parkdeckbrandes.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Tanja Schneeberger, Stefan Schaffer, Dimitra Tsovaltzi, Lara Chehayeb, Patrick Gebhard	Workshop on Smart Urban Micromobility.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Chat Wacharamanotham	Introduction to Transparent Practices for Quantitative Research.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Alina Huldtgren, Holger Klapperich, Tim Weiler, David Struzek, Lone Malmborg, Mark Rouncefield, Gerhard Fischer, Claudia Müller 0002	First International Workshop on Co-Creation of Hybrid Interactive Systems for Healthcare.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Tamara von Sawitzky, Andreas Riener	Supporting Cyclists through Hazard Notification Systems: Insights from the Evaluation of Notification Modalities with a Head-mounted Wearable System.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Arne Berger, Henrik Mucha, Viktoria Horn, Andreas Bischof, Torben Volkmann, Claude Draude, Alexa Becker, Benedikt Haupt, Juliane Jarke, Franzisca Maas, Sara Wolf, Anna-Katharina Dhungel, Sandra Buchmüller, Nicola Marsden	Partizipative und sozialverantwortliche Technikentwicklung.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Valentin Grimm, Jessica Rubart	Unlocking E-learning and XAI Concepts with Free Limited Choice.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Katharina Giordano, Juliane Leinweber, Alina Ernst, Laura Tuschen, Angela Osterheider, Cordula Endter	The struggle to find the best solution: Interdisciplinarity as a prerequisite and challenge of co-creation? Reflections from the practice.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Margit Flory	Der Kampf um die Köpfe.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Ivo Benke, Saskia Haug, Alexander Maedche	The Human-in-the-loop CrowdSurfer Concept: Providing User-centered AI Support to Crowdworkers for Improved Working Conditions and Task Outcomes.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Frauke Mörike, Franziska Günther, Veronica Hoth, Mirjam Landowski, Stefan Brandenburg	Hybrides Arbeiten und Kollaboration: Eine Standortbestimmung zwischen neuen Arbeitspraxen und Technologiegestaltung in kleinen und mittelständischen Unternehmen (KMU).	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Rifat Mehreen Amin	Multi-Objective Counterfactuals for Counterfactual Fairness in User Centered AI.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Kristina Deryagina, Claudia Müller 0002, Larissa Jesus	Design of a grocery shopping navigation support system for visually impaired individuals.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Stefka Schmid	Safe and Secure? Visions of Military Human-Computer Interaction.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Pankhuri Pankhuri, Nasim Aghamohammadian, Margarita Osipova	Unleashing the Power of Wearable Technology: Enhancing Health and Adaptation for International Students in Transition to Germany.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Alexander Rossner, Sven Pagel, Ralf Dörner 0001	User-Centered Evaluation of Machine Learning vs. Human Decisions - Identifying Emotional Highlights in Reality TV Formats.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Sven Bittenbinder, Claudia Müller 0002	Responsibilities for accessibility in companies - Who does it?	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Roland Thomaschke	Choosing temporal freedom? How to investigate choice preference along an anisotropic dimension.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Julian Fietkau 0001	A New Software Toolset for Recording and Viewing Body Tracking Data.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Julia Hermann, Aysegül Dogangün	Participation between IT Students and People with Disabilities: Initial Findings from a Service-Learning Project.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Jonas Lacher, Laura Bieschke, Florian Michalowski, Johanes Münch	Using machine learning to determine attention towards public displays from skeletal data.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Eridy Lukau, Janine Hellriegel, Michael Klafft	Towards a general methodology to assess the ease of use of public safety applications and crisis communications services.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Maximilian Schrapel, Annika Weiser, Alexey V. Vinel	Enhancing Safety and User Experience in Micromobility with V2X-Enabled ANC Headphones.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Vemburaj Yadav, Alain Pagani, Didier Stricker	Camera-based position analysis system for cyclists ordering in bicycle swarms.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Anna C. Weigand, Maria Rauschenberger	Exploring the Definition of Small Data Collected with HCI Methods and Used for ML.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Sebastian Weber, Gerhard Klassen, Marc Wyszynski, Bastian Kordyaka	Illuminating the Predictive Power of Gamification to Inspire Technology Users.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Francesca Müller, Samuel Tomczyk, Ramian Fathi, Marie-Luise von Berg, Lars Tutt, Frank Fiedrich	Soziale Medien als psychosoziale Ressource in Krisen und Katastrophen.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF
15	Siiri Paananen, Matilda Kalving, Jemina Colley, Emma Kirjavainen, Maxim Narbrough	Quadrupedal Robot Dog as an Attraction in a Local Outdoor Event for Live Streaming and Engagement.	MuC (Workshopband)	2023	DBLP DOI BibTeX RDF