Faculty Listening Session: AI In the Classroom at UMBC (part 2) 12-1pm, Wednesday, March 5, 2025 online

After receiving widespread feedback from the fall 2024 faculty survey and the February Listening Session, the UMBC Faculty Senate’s Ad Hoc Committee on the Integration of Artificial Intelligence is holding an additional online listening session to solicit experiences, thoughts, and concerns of UMBC faculty regarding use of AI in the classroom. The listening session will be recorded to preserve data and no identifying information will be associated with collected data.  The outcomes of the listening sessions will be reflected in the committee’s report shared with the faculty senate.

The Ad Hoc Committee has the goals of (1) Formulating evidence-based policy recommendations to guide the ethical and responsible integration of AI technologies in teaching and learning environments and (2) Proposing guidelines, procedures, and safeguards to ensure the appropriate use of AI tools while mitigating potential risks and safeguarding academic integrity, student privacy, and equity.

Join online event, 12-1pm Wednesday, March 5
UMBC Center for AI ]]> After receiving widespread feedback from the fall 2024 faculty survey and the February Listening Session, the UMBC Faculty Senate’s Ad Hoc Committee on the Integration of Artificial Intelligence... https://my3.my.umbc.edu/groups/fs/events/140857 https://my3.my.umbc.edu/api/v0/pixel/news/147697/guest@my.umbc.edu/3863c41016e85aeda0743ed978ad9f7e/api/pixel ai teaching umbc UMBC AI https://my3.my.umbc.edu/groups/umbc-ai https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets2-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/original.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/large.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/medium.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/small.png?1691095779 https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxsmall.png?1691095779 UMBC Faculty Senate 0 0 true Thu, 27 Feb 2025 09:30:02 -0500 AI in the UMBC Classroom, 12-1 Jan. 15 UMBC Winter Session Beyond the Classroom online series
There's a lot of talk about AI in the classroom, but what do we mean by that? What is the "AI" we are talking about? How and when might we use AI to enhance our teaching and learning while keeping it from replacing us as teachers and students? Join Dr. Tanya Olson for a discussion and a look towards the future. 

The session will be online from 12-1pm ET, on Wednesday, January 15, 2025. Use this link to join the online session. 

Tanya Olson lives in Silver Spring, Maryland and is a Senior Lecturer in English at UMBC. Olson holds an M.A. in Anglo-Irish Literature from University College, Dublin and the Ph.D. in 20th-Century British Literature from the University of North Carolina-Greensboro. She has taught first-year composition, technical communication, and creative nonfiction classes in the North Carolina Community College system and University System of Maryland and currently serves as the director of WARD (Writing and Rhetoric Division) at UMBC.

UMBC Center for AI ]]> There's a lot of talk about AI in the classroom, but what do we mean by that? What is the "AI" we are talking about? How and when might we use AI to enhance our teaching and learning while keeping... https://my3.my.umbc.edu/groups/summerspecialprograms/events/137013 https://my3.my.umbc.edu/api/v0/pixel/news/146520/guest@my.umbc.edu/f8d740cb379c2565c298953590b6b7ea/api/pixel ai classroon learning teaching umbc UMBC AI https://my3.my.umbc.edu/groups/umbc-ai https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets2-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/original.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/large.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/medium.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/small.png?1691095779 https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxsmall.png?1691095779 Winter Session: Beyond the Classroom https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/146/520/d56b596870b749fc123f8c0d759753ba/xxlarge.jpg?1736546734 https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/146/520/d56b596870b749fc123f8c0d759753ba/xlarge.jpg?1736546734 https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/146/520/d56b596870b749fc123f8c0d759753ba/large.jpg?1736546734 https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/146/520/d56b596870b749fc123f8c0d759753ba/medium.jpg?1736546734 https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/146/520/d56b596870b749fc123f8c0d759753ba/small.jpg?1736546734 https://assets1-my.umbc.edu/system/shared/thumbnails/news/000/146/520/d56b596870b749fc123f8c0d759753ba/xsmall.jpg?1736546734 https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/146/520/d56b596870b749fc123f8c0d759753ba/xxsmall.jpg?1736546734 0 0 true Fri, 10 Jan 2025 17:17:31 -0500 Fri, 10 Jan 2025 17:52:46 -0500 UMBC.AI Google Calendar Goggle Calendar users can add it to their personal calendar

We have started a Google Calendar for AI-related events at or associated with UMBC.  See this page for an example.

If you use Google Calendar, you can add this AI.UMBC.EDU calendar to your personal calendar to have it also also show AI-related events. Once you have linked it to your Google Calendar, it is easy to turn the AI event notifications off or on. 

To add the AI.UMBC.EDU calendar to your Google Calendar, click this link and follow the directions. If you have an event to suggest adding to the AI Calendar, email information about it to umbc-ai@cs.umbc.edu.

UMBC Center for AI ]]> We have started a Google Calendar for AI-related events at or associated with UMBC.  See this page for an example. If you use Google Calendar, you can add this AI.UMBC.EDU calendar to your... https://ai.umbc.edu/cal2/ https://my3.my.umbc.edu/api/v0/pixel/news/145502/guest@my.umbc.edu/db566ffd2917a3281dd41468fc7cda0d/api/pixel ai calendar events umbc UMBC AI https://my3.my.umbc.edu/groups/umbc-ai https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets2-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/original.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/large.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/medium.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/small.png?1691095779 https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxsmall.png?1691095779 UMBC AI https://assets1-my.umbc.edu/system/shared/thumbnails/news/000/145/502/ee1818493b4ca601e268f0b79407d819/xxlarge.jpg?1731272556 https://assets1-my.umbc.edu/system/shared/thumbnails/news/000/145/502/ee1818493b4ca601e268f0b79407d819/xlarge.jpg?1731272556 https://assets2-my.umbc.edu/system/shared/thumbnails/news/000/145/502/ee1818493b4ca601e268f0b79407d819/large.jpg?1731272556 https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/145/502/ee1818493b4ca601e268f0b79407d819/medium.jpg?1731272556 https://assets2-my.umbc.edu/system/shared/thumbnails/news/000/145/502/ee1818493b4ca601e268f0b79407d819/small.jpg?1731272556 https://assets2-my.umbc.edu/system/shared/thumbnails/news/000/145/502/ee1818493b4ca601e268f0b79407d819/xsmall.jpg?1731272556 https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/145/502/ee1818493b4ca601e268f0b79407d819/xxsmall.jpg?1731272556 0 0 true Sun, 10 Nov 2024 16:11:09 -0500 Demystifying Machine Learning in Data Science, 6-7pm ET 4/26

Have you ever wondered how self-driving cars navigate or how Netflix recommends your next binge? It's all thanks to the mind-blowing power of Machine Learning (ML). Join us for a free, fun and interactive one-hour online session where you will:
  • Demystify ML in plain English: no jargon, just clear explanations that will have you saying "Aha!"
  • Discover amazing ML applications: from healthcare to entertainment, see how ML shapes our world.
  • Get hands-on with a famous ML challenge: use free online tools to tackle a real-world problem yourself.
This is your chance to:
Don't miss out on this exciting opportunity to step into the future of technology! No prior coding experience is needed.

Register here for this online session from 6-7pm ET, Wednesday April 24, 2024 online via WebEx.

UMBC is committed to inclusivity and accessibility. Automated closed captioning will be available during the event through Webex.

UMBC Center for AI
]]> Have you ever wondered how self-driving cars navigate or how Netflix recommends your next binge? It's all thanks to the mind-blowing power of Machine Learning (ML). Join us for a free, fun and... https://events.blackthorn.io/en/3t1z5Tf7/g/fg7KS5CJ1F/demystifying-machine-learning-for-data-science-success-4a2HVXaZ0r/overview https://my3.my.umbc.edu/api/v0/pixel/news/141161/guest@my.umbc.edu/0211f30722b03d5c54497bfb1cab22dd/api/pixel ai data-science machine-learning umbc UMBC AI https://my3.my.umbc.edu/groups/umbc-ai https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets2-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/original.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/large.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/medium.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/small.png?1691095779 https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxsmall.png?1691095779 UMBC AI 0 0 true Sun, 21 Apr 2024 12:34:41 -0400 Mon, 22 Apr 2024 08:38:55 -0400 Machine Learning for Bioprocess Sensor Innovation UMBC's Prof. Govind Rao interviewed for GEN News article
UMBC Professor Govind Rao, was interviewed for an article on Machine Learning for Bioprocess Sensor Innovation in Genetic Engineering & Biotechnology News on the use of machine learning for bioprocess monitoring in drug manufacturing.

Machine learning (ML) could allow drug firms to create predictive process models that optimize development, production, and quality control. But, before embracing ML on the factory floor, manufacturers will need data to “train” the computer algorithms that drive the approach. And this means having process sensors sophisticated enough to track multiple parameters in real-time in highly complex cell cultures according to an industry expert.
Machine learning is a specialized form of artificial intelligence in which computer programs learn to solve tasks or understand the dynamics of complex systems with minimal or no direction. The process is iterative, and the solutions improve over time as more data is introduced.

This need for training data is driving innovation in process sensors, says Govind Rao, PhD, who is director of the Center for Advanced Sensor Technology at the University of Maryland, Baltimore County.

“At the end of the day, AI/ML tools will allow for process monitoring to be simplified once data are generated at scale to relate process conditions to critical quality attributes. The need to run QC tests on quarantined bulk drug substance will be greatly reduced,” he explains. “However, to get there will require high-density process monitoring to allow ML/AI algorithms to relate process conditions to off-line measurements such as glycosylation, aggregation, etc.”

• ai.umbc.edu •
]]> UMBC Professor Govind Rao, was interviewed for an article on Machine Learning for Bioprocess Sensor Innovation in Genetic Engineering & Biotechnology News on the use of machine learning for... https://www.genengnews.com/topics/bioprocessing/machine-learning-for-bioprocess-sensor-innovation/ https://my3.my.umbc.edu/api/v0/pixel/news/140958/guest@my.umbc.edu/040bd0f29e1158cb9d1036c32ca0e76f/api/pixel ai cbee machine-learning umbc UMBC AI https://my3.my.umbc.edu/groups/umbc-ai https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets2-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/original.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/large.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/medium.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/small.png?1691095779 https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxsmall.png?1691095779 UMBC AI 0 0 true Mon, 15 Apr 2024 16:34:52 -0400 Tue, 16 Apr 2024 22:05:38 -0400 AI talks at COEIT Research Day, 10:30-12:30, Friday April 19 Six talks on current AI research at UMBC
The UMBC College of Engineering and Information Technology (COEIT) Research Day event takes place from 9:00 am  to 3:00 pm on Friday, April 19, 2024. Parallel sessions of talks on COEIT research are scheduled from 10:30 am to 12:30 pm in the ITE building.

The program of talks includes a session of six presentations on current AI-related research in COEIT departments. Full details on the talks, including their abstracts, is available here.
  • Tejas Gokhale: Towards Robust Visual Understanding: from Recognition to Reasoning
  • Md Badrul Hasan, Meilin Yu, Heng Xiao, and Tim Oates: Sub-grid Scale Modeling of Meso-scale Hurricane Boundary Layer Flows using Machine Learning
  • Seraj Al Mahmud Mostafa, Omar Faruque, Chenxi Wang, Jia Yue, Sanjay Purushotham, and Jianwu Wang: From Data-Efficient Machine Learning to Neuro-symbolic AI
  • Houbing Song: From Data-Efficient Machine Learning to Neuro-symbolic AI
  • Sai Vallurupalli, Sayontan Ghosh, Katrin Erk, Niranjan Balasubramanian, and Francis Ferraro:POQue: Asking Participant-specific Outcome Questions for a Deeper Understanding of Complex Events
  • Roberto Yus, Jun Ma, Aamir Hamid, Christian Badalato, Sanaa Mironov, Hemanth Reddy Samidi, and Brian Scherzo: Democratizing the IoT through Privacy-Preserving Data Management
Get more information about COEIT Research Day and register to attend here.
]]> The UMBC College of Engineering and Information Technology (COEIT) Research Day event takes place from 9:00 am  to 3:00 pm on Friday, April 19, 2024. Parallel sessions of talks on COEIT research... https://coeit.umbc.edu/coeit-research-day/ https://my3.my.umbc.edu/api/v0/pixel/news/140651/guest@my.umbc.edu/d7b79e5630adce781f7330f33b5efd70/api/pixel ai coeit research talks umbc UMBC AI https://my3.my.umbc.edu/groups/umbc-ai https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets2-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/original.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/large.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/medium.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/small.png?1691095779 https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxsmall.png?1691095779 UMBC AI https://assets2-my.umbc.edu/system/shared/thumbnails/news/000/140/651/8d4a592a3871ec6f5aaa9ef44adf8dbb/xxlarge.jpg?1712586709 https://assets2-my.umbc.edu/system/shared/thumbnails/news/000/140/651/8d4a592a3871ec6f5aaa9ef44adf8dbb/xlarge.jpg?1712586709 https://assets2-my.umbc.edu/system/shared/thumbnails/news/000/140/651/8d4a592a3871ec6f5aaa9ef44adf8dbb/large.jpg?1712586709 https://assets3-my.umbc.edu/system/shared/thumbnails/news/000/140/651/8d4a592a3871ec6f5aaa9ef44adf8dbb/medium.jpg?1712586709 https://assets1-my.umbc.edu/system/shared/thumbnails/news/000/140/651/8d4a592a3871ec6f5aaa9ef44adf8dbb/small.jpg?1712586709 https://assets4-my.umbc.edu/system/shared/thumbnails/news/000/140/651/8d4a592a3871ec6f5aaa9ef44adf8dbb/xsmall.jpg?1712586709 https://assets4-my.umbc.edu/system/shared/thumbnails/news/000/140/651/8d4a592a3871ec6f5aaa9ef44adf8dbb/xxsmall.jpg?1712586709 0 0 true Mon, 08 Apr 2024 10:38:46 -0400 New Center for Applied AI at UMBC Training Centers Its curated courses & micro-courses invite you to unravel AI  
UMBC Training Centers established a new Center for Applied AI as a dedicated hub for advancing skills and fostering innovation in the ever-changing field of Artificial Intelligence. It will offer multiple learning opportunities through courses, webinars, and micro-sessions from a team of experienced instructors with extensive industry knowledge. 

The center will also provide a variety of free programming, including virtual information sessions, Q&As, workshops, and in-person community meet-ups to accommodate different skill levels and professional backgrounds. Check out its 27-minute video Introducing Generative AI, ChatGPT, & more, and sign up for its upcoming free AI Lunchbox talks held 12-1 pm every few weeks.
]]>   UMBC Training Centers established a new Center for Applied AI as a dedicated hub for advancing skills and fostering innovation in the ever-changing field of Artificial Intelligence. It will... https://c4a.ai/ https://my3.my.umbc.edu/api/v0/pixel/news/138513/guest@my.umbc.edu/786a4d6f709fd035e1c813e8339f4545/api/pixel ai training umbc UMBC AI https://my3.my.umbc.edu/groups/umbc-ai https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets2-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/original.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xlarge.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/large.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/medium.png?1691095779 https://assets3-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/small.png?1691095779 https://assets4-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xsmall.png?1691095779 https://assets1-my.umbc.edu/system/shared/avatars/groups/000/002/081/cfb27ebe008c2636486089a759ea5c36/xxsmall.png?1691095779 UMBC AI 0 0 true Tue, 30 Jan 2024 10:41:27 -0500 Tue, 27 Feb 2024 17:47:46 -0500