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課程簡介：微分表切線斜率，積分表曲線下圍出的面積，兩截然不同的東西透過微積分基本定理連結在一起。
- Course related:
- AMA1007 Calculus and Linear Algebra
- Subjects:
- Mathematics and Statistics
- Keywords:
- Calculus
- Resource Type:
- Video
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Video
Comparing initial rates to determine the order of reaction is a very common question in Kinetics.
Let's take a look at an example:
The objective is to choose a pair of experiments for comparison where the concentration of a reactant changes and ideally the concentration of other reactants remain constant. This means that any change in the initial rates of the experiments must be due to the change in the concentration of that reactant, and we can figure out the order from there.
1. Order of Reaction with respect to HCl
Comparing experiments 1 and 3, concentration of HCl doubles and there is no change in concentration of sucrose. So the change in initial rates must be due to HCl only. We can work out the change in initial rates to be 2 times. This means when concentration of HCl doubles, initial rate doubles. Therefore order of the reaction with respect to HCl will be order 1. For comparison, if order of reaction is zero, initial rate will remain unchanged when concentration of HCl doubles. If order of reaction is 2, initial rate will increase by 4 times (2^2 times) when concentration of HCl doubles. Since we only have 3 possible orders to consider, figuring out the order of reaction is quite straightforward.
2. Order of Reaction with respect to sucrose
Comparing experiments 1 and 2, concentration of sucrose increase by 1.5 times and there is no change in concentration of HCl. So the increase in initial rates by 1.5 times must be due to sucrose only. Since this is a proportionate increase, order of reaction with respect to sucrose is also order 1. Finally we can write out the rate equation for this reaction to be: rate = k [HCl][sucrose]
- Course related:
- ABCT 2701 Analytical Chemistry
- Subjects:
- Chemistry
- Keywords:
- Chemistry Physical theoretical
- Resource Type:
- Video
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Video
Welcome to Zero to Hero for Natural Language Processing using TensorFlow! If you’re not an expert on AI or ML, don’t worry -- we’re taking the concepts of NLP and teaching them from first principles with our host Laurence Moroney.
- Subjects:
- Computing
- Keywords:
- Machine learning Natural language processing (Computer science)
- Resource Type:
- Video
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Video
What would happen if a 150.000-tonnes meteorite hit you? Sadly, this is precisely what has happened to the demure Henri Debrus, forcing himself to detach from his body at a specific and constant 91-centimetre distance apart. Undoubtedly, his predicament sounds improbable or even tragic and funny at the same time, nevertheless, let us see how would you cope with this complex day-to-day problem if your existence was mocked by every physical law. Just imagine it. It's not funny.
- Course related:
- SN2704 Fundamentals of Mental Health Nursing and SN3704 Mental Health Nursing Therapeutics
- Subjects:
- Nursing
- Keywords:
- Schizophenia Mental illness Mental health
- Resource Type:
- Video
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Video
This hybrid session offered by EDC and ITS introduces you how to adopt different assessment functions of Blackboard to address different learning levels of the subject content taught for formative, summative and other-related assessment purposes. You will have opportunities to seek pedagogical and technical advice from the presenters for planning different aspects of your assessment including creating, deploying, and delivering assessment activities.
Event Date: 18/10/2021
Facilitator(s): Roy Kam, Pony Ma
- Subjects:
- Assessment & Feedback
- Keywords:
- Educational tests measurements Web-based instruction
- Resource Type:
- Video
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Video
Join us in this hybrid session featuring the frontline sharing from BEEE colleagues to experience different eAssessment practice through 'Simulating' and 'Exploring' to come up with practical solution for continuous and/or summative assessment in hybrid classrooms such as FJ304 the Lecture Theatre this time.
Event Date: 14/9/2021
Facilitator(s): Gigi Lui, Hilda Cheung, Roy Kam
- Subjects:
- Assessment & Feedback
- Keywords:
- Web-based instruction Educational tests measurements
- Resource Type:
- Video
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Video
This session, the second in a two-part series, explores how students can use the note-taking anddiscussion tools in uRewind to engage more deeply with the content of your lecture recording. It also looks at how you can create quizzes that require students to summarise what they have watched.
By the end of this session, you will be able to:
• design more complex quiz questions that develop the skill of summarising
• help students write contextualised, personal reflections on parts of your lecture recording
• engage students in discussions based around key moments in your video.
Event Date: 7/10/2021
Facilitator(s): Dave Gatrell, Kai Pan Mark
- Subjects:
- Student Engagement and Lesson Design
- Keywords:
- Motivation in education Computer-assisted instruction Web-based instruction Engagement (Philosophy) Lecture method in teaching
- Resource Type:
- Video
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Video
Join colleagues from PolyU and CUHK as we take a collaborative look at Hybrid Teaching & Learning. In the workshop we will consider the basics of hybrid pedagogy and look at steps taken by both universities to enable their teaching and learning spaces to deliver hybrid education. We will look at how to achieve interactions in a hybrid classroom and hear from frontline teachers in both institutions as they share their experiences of teaching in hybrid mode.
Event Date: 4/10/2021
Facilitator(s): Darren Harbutt, Dave Gatrell, Pauli Lai, Paul Lam, Darwin Lau
- Subjects:
- Lesson Design
- Keywords:
- Web-based instruction Education Higher Blended learning
- Resource Type:
- Video
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Video
Lecture recordings have become an essential part of face-to-face, online and hybrid learning. They also offer many additional opportunities for active learning. This two-part, hands-on, workshop series is designed to help you make the most of your recordings, transforming them into an engaging learning resource that will increase students’ participation and interaction.
This session, the second in a two-part series, explores how students can use the note-taking and discussion tools in uRewind to engage more deeply with the content of your lecture recording. It also looks at how you can create quizzes that require students to summarise what they have watched. By the end of this session, you will be able to:
- design more complex quiz questions that develop the skill of summarising
- help students write contextualised, personal reflections on parts of your lecture recording
- engage students in discussions based around key moments in your video.
Event Date: 24/9/2021
Facilitator(s): Dave Gatrell, Kai Pan Mark
- Subjects:
- Student Engagement and Lesson Design
- Keywords:
- Motivation in education Computer-assisted instruction Web-based instruction Engagement (Philosophy) Lecture method in teaching
- Resource Type:
- Video
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Video
An Internet-of-Thing (IoT) component can be configured to collect real-time environmental data. This video will teach you how to make a small scale weather monitoring station by integrating ESP8266 board with a temperature and humidity sensor. You could monitor the real-time and historical environmental data remotely over the cloud platform. In this video, you will learn:
- How to do basic programming on ESP8266 board to control device's input and output
- How to generate data from IoT devices to aggregate and process data in Cloud service
- Keywords:
- Arduino (Programmable controller) Environmental monitoring--Data processing Internet of things
- Resource Type:
- Video