Hello, everyone. I want to welcome you for our second course in the specialization which we'll be talking and focusing more in construction scheduling. Again, you are part of the specialization covering the construction management area or focus. And the focus of construction management we highlighted the first course that construction management or we referred to it as initiating the construction project and the construction planning Is and what you will need to think about as planning for your project. The second course will be I highlighted a couple of what are the main topics we will be covering. Which will be related to construction scheduling. The third one we will highlight more the construction cost estimation and cost control and we will finalize the specialization as we mentioned in the introductory video in the beginning of the first course, with construction financing. So that being said, for this course I want you to go through here very related topics to, when it comes to scheduling your projects. And how to deal with a schedule, and how to develop a schedule. And that topics will be covering they are related tool bar charts like scheduling two bar charts activity on arrow, activity on nodes. What's the differences between all of them, and of course to highlighted a little bit on the activity precedence diagram. And after we present that, we go through, what kind of relationships that we have or connecting all the construction activities in our project from start to start, finish to start, and start to finish, and finish to finish are multiple relationships. Also what we'll be covering in this course is how we do or perform that scheduling procedure from what we call the forward and the backward task calculation for your schedule on your network. And how to find what we call the early start the early finish of each activity in your project. And the late start and the late finish, and that will lead us to determine and discuss the critical path and the importance of critical path for scheduler and for a construction manager and project manager on your project. After that we will highlight activity flows. What's that mean? Why is it important when we're dealing with a critical activity especially, and other activities on analytical activities Moving forward we will be covering an area related to the working calendar dates. And how the differences between a working and a calendar dates and why it is important to understand them? Then, I will highlight the program evaluation and review technique or what we refer to as PERT and the PERT is introducing the uncertainty in your schedule and how to deal with uncertainty, when you have several times for one activity, not only one time proposed to you from the scheduler. And then, focusing on the third method to how we tie it with the budget and do what we call range estimating which is very close to the third technique or schedule technique. But it's more focusing in the course. We'll wrap up with the technicality modules focusing on the linear construction operations, or what we refer to as a repetitive, construction operations like a roadway, or a tunnel, or even high rise building that has similar floors that you want to build over, and over, and over. With that special type of construction, we introducing another module related to the line of balance and how to use that line of balance in repetitive construction operations. Then we want to dig deeper into more special topics. For example, we will highlight the what kind of technology or softwares that are very common to be used in your project. And how to use them by building a simple example that we use in all the other modules that I just explained briefly. Furthermore, we want to highlight that area of risk. To understand your risk on your project when it comes, and connect it to a schedule of a project. From the rest, we will explain to you what's the differences between the project schedule and the program schedule? If you remember, I give an introduction in the first course about what's a program and the differences between a program and a project management and construction management. Now, we want to follow up and build them that to explain to you what's the program schedule look like, and what is it, the definition of it and how it is different, with project schedule. Also, we want to highlight two last things. One is the rule of the scheduler. What expects from a scheduler in your company and the last point is about lean. We covered introduction to lean in construction in the first course, and we highlight it from a general point of view, from a planning point of view, how you want to cover it as the initiation of the project and what areas to consider when you're thinking or developing your project. With time to think about lean construction but from a scheduling or scheduler point of view. This is briefly what we want to highlight in the construction scheduling course and I just highlighted briefly what are these outlines that you will go through in this exciting journey for this second course in the specialization. That being said, I want to highlight who are the speakers that I invited to work with me, and we work together in developing the materials for you, and take it to the next level. So as we can what I call bridge between the theory and the practice. To connect what's the theory you learn from schools and books, and what's actually in the field that's happening and take it to a next level and do the connections between both. Starting from our friend, Jennifer Buermann, she is a Project Controls Manager at STV. She will be talking about the role of the scheduler from a practical point of view. Mr. Eduardo Gamez, he is one of our dear friends here. He come to Columbia a couple of times to address the area of risk in construction projects from the planning and the scheduling. Me and him, we work a lot together. So I asked Dr. Gamez to come and speak to you about risk in your scheduling. Ms. Dareen Salama also she came in the first course talked about also technology part, covered the area of the lead information modeling. And me and her, we worked together in high also related to technology for you but also how to use a Primavera P6 and all kinds of a tools that are available for you as a scheduler from an introductory point of view with more examples from the common softwares being used in the industry. Sam Spata, he also highlighted the introduction to lean and we worked on developing lean slides for that scheduler point of view, and that's an area catching up a lot in our industry, and is very important for us in our market and our projects. So it's very important for you as a scheduler in addition to you as a planner to know and learn this kind of topic. The last speaker we have is Chris or Christopher Toomey who is one of our main supporters from AECOM who speak or spoke in the first course about the defenses between the program project. And construction management and now he will show with also for the practical part of view because he leads huge program as the main key guy in these programs worth of billions of dollars. And to highlight the example of the program schedule of point of view and that will be great exciting the project, it great exciting topic for you to connect together. So as I explained to you from, or the course outline, you will have then a very comprehensive introductory level to equip you to understand exactly the fundamentals of construction scheduling in our business, is as if you are a construction manager. Or scheduler focusing more just on scheduling or a planner or even an architect willing to know about scheduling in your field or in our field, in that project that you are working on. Or a sub-contractor willing to take this also further and understand what kind of scheduling mechanism the entire project is that general contractor is working on. So if you notice, our course will be focusing all these type of folks who are involved in a project, in a construction project. So welcome to the course and I wish you all the best.