1 Modeling Page 1 To BPEL or not to BPEL? 5:56 PM To BPEL or not to BPEL? BPEL disadvantage: more time to product BPEL advantage: better reusability, analysis
2 Modeling Page 2 A tale of two strategies 5:57 PM A tale of two strategies The older strategy: salesforce.com: Write business logic in a custom language. Provide a large variety of services. No BPEL. The newer strategy: intalioworks.com: Write overall strategy in BPMN; Refine into BPEL; Plumb BPEL to services graphically without writing code.
3 Modeling Page 3 The big picture of BPEL 10:47 AM The big picture Define your business processes via BPMN, and (using design patterns in WS-CDL), convert them to executable BPEL, which you execute on a BPEL engine, e.g., Apache ODE or IBM Websphere, which contacts web services (e.g., generated by apache AXIS or salesforce APEX), which utilize cloud services via java APIs.
4 Modeling Page 4 So, why are we this high up? 10:51 AM So, why are we this high up? BPMN is the Cobol of the new millenium! Easily readable by a manager, and Clearly expresses observable intent, but Darn near impossible for a manager to write! BPEL is not understandable to managers, but need not be, because it only implements the BPMN observables. It might be argued that BPEL caused clouds as we know them, by justifying their use.
5 Modeling Page 5 The real effect of BPMN 10:57 AM The real effect of BPMN Allows one to judge just how important reliability is, by answering "what-if" questions about service performance, and analyzing the cost of service delays, which justifies high-reliability services, which led to clouds!
6 Modeling Page 6 The hidden use for BPMN models 11:01 AM The hidden use for BPMN models Can use the model, without code, to predict business performance and value. Can model the effects of performance and reliability. Can predict bottom-line behaviors.
7 Modeling Page 7 How to analyze BPMN 11:03 AM How to analyze BPMN BPMN analysis is a simple generalization of PERT (Program Evaluation and Review Technique), which is a generalization of Critical Path Method analysis (CPM).
8 Modeling Page 8 Critical Path Method Wednesday, December 02, :08 AM Critical Path Method A basic tool for project management Express task precedences as a task graph. Task A -> B means A should precede B. Has a Start node: when project starts. Has an End node: when project is finished.
9 Modeling Page 9 Relationship between CPM and BPMN 11:16 AM Relationship between CPM and BPMN: BPMN processes take time. Time delays are measurable and predictable. Effects of delays are predictable. Can use statistics on delays, as well as traces of business load, to predict overall performance, and even profit. Can determine which processes are critical, which determines which cloud functions are critical. Can ask "what-if" questions about what will happen if critical processes change. E.g., via a different SLA.
10 Relating CPM and BPMN 11:27 AM Two BPMN processes (request and response) One CPM task (get data). Modeling Page 10
11 Modeling Page 11 Trace-driven simulation 11:21 AM Trace-driven simulation A common business decision support technique Input: statistics on subprocess time requirements, and an actual trace of customer requests for a given day. Output: predictions of how that day would have gone if processes had been more (or less) efficient. Key is cost/value analysis: Cost: what you pay for service, or what it costs you to provide it yourself. Value: what customers do, and how much money you make.
12 Modeling Page 12 The big deal 6:24 PM The big deal: BPEL can be tuned based upon observation. It is not static, but its performance changes when you reassign parts of it to different services.
13 Modeling Page 13 Definitions Wednesday, December 02, :28 AM CPM Definitions Duration: how long it takes to do a task. Earliest start time: earliest time a task can be started = max of earliest completion times for prerequisites. Latest start time: latest time a task can be started and still finish with minimum completion time for project. Earliest completion time: earliest start time + task duration. Latest completion time: latest start time + task duration. Slack time: latest completion time - earliest completion time = latest start time - earliest start time. A task is critical if its earliest start time is its latest start time, i.e., slack time = 0! Changing the time of a critical task changes overall behavior. Key idea: if a service is critical, improving it means something.
14 Modeling Page 14 The critical path theorem Wednesday, December 02, :30 AM The critical path theorem Critical tasks do not occur in isolation, but instead lie on a critical path from start to finish. There may be multiple critical paths. If any task on a critical path changes in duration, the whole project duration can change.
15 Modeling Page 15 The critical path algorithm Wednesday, December 02, :33 AM The critical path algorithm Objective: compute slack time for every task. Two phases: forward scan and backward scan. Forward scan: compute earliest completion time. Backward scan: compute latest completion time.
16 Modeling Page 16 A task graph Wednesday, December 02, :16 AM A task graph has a start, end, and intermediate tasks.
17 Modeling Page 17 Forward algorithm Wednesday, December 02, :24 AM Forward scan: Label each task with its time. Mark start's earliest start time and earliest completion time as 0. From left to right (start to finish), If a task's predecessors are marked with their earliest completion times, its earliest start time is the maximum of predecessor earliest completion times and its earliest completion time is its earliest start time plus its duration. At the end, every node is labeled with its earliest start and completion times.
18 Forward scan example Wednesday, December 02, :16 AM Start at beginning Compute earliest start time and earliest completion time. Modeling Page 18
19 Modeling Page 19 Backward algorithm Wednesday, December 02, :24 AM Backward scan: Mark end's latest start time and latest completion time as its earliest start time and completion time. From right to left (finish to start), If a task's successors are marked with latest start time, its latest completion time is the minimum of successor latest start times and its latest start time is its latest completion time minus its duration. At the end, every node is labeled with its latest start and completion times.
20 Modeling Page 20 Backward scan example Wednesday, December 02, :16 AM Start at end Compute latest completion and start times from end to beginning
21 The critical path Wednesday, December 02, :16 AM A critical path has earliest start time = latest start time. Modeling Page 21
22 Modeling Page 22 CPM and PERT Wednesday, December 02, :11 PM CPM and PERT CPM: Critical Path Method input: task times and precedences output: minimum completion time, slack time, etc. PERT: Program Evaluation and Review Technique input: task time probability distributions and precedences output: probability distribution of minimum completion time, slack time, etc.
23 Modeling Page 23 PERT Wednesday, December 02, :14 PM How (simple) PERT works Assign a normally-distributed probability distribution n(μ,σ) to each task: μ=mean completion time σ=standard deviation of completion time n(μ,σ)(t) = exp(-(t-μ) 2 /σ 2 ) Compute the PDF of the earliest start time and latest start time from the PDF of the task completion times! If we have two tasks in sequence, and they're independent, then the probability that the two take time t is the integral of the product of PDF(t1)*PDF(t2), for all t=t1+t2 (convolution).
24 Modeling Page 24 Example of PERT analysis 6:36 PM Suppose we have an empirical distribution as follows: instances p=50/ instances p=40/ instances p=10/100 Caveat: distributions change over time. sensitive to time of day and external load. sensitive to external events. Call this d If 0<=d<10, d is not critical, delay is 35 with p=1/2 If 10<=d<20, d is not critical, delay is 35, p=4/10 if 20<=d<30, d is critical, delay is 35-45, p=1/10 SO We can compute the expected value, which is the sum of value * Prob(value), where the value is an interval = (35, 35)*9/10 + (35,45)*1/10
25 Modeling Page 25 Two probability distributions 6:44 PM Suppose that d is 10 p=.2 20 p=.5 30 p=.3 and e is 10 p=.1 20 p=.3 30 p= at probability.2* at probability.2* at probability.2*.6.
26 Practical modeling 11:43 AM Practical modeling Completion times expressed in terms of frequency tables for observations: Completion time range on X Frequency on Y Empirical probability: frequency/total trials. Modeling Page 26
27 Modeling Page 27 Limitations of BPMN modeling 11:48 AM Limitations of modeling Response times for external services vary with (unpredictable) external load (and time of day). Cannot model unforeseen situations. Amusement: IBM has tried to beat this, by doing modeling that injects unforeseen situations! E.g., gnomes running around causing hardware failures!
28 Modeling Page 28 Alas, 10:59 AM Alas, I haven't been able to locate a freeware BPMN analyzer, that: Assigns probabilities to failures, Simulates resulting operational behavior, and predicts effects upon profits. But these do exist; they just cost money!
Operational Research Project Menagement Method by CPM/ PERT Project definition A project is a series of activities directed to accomplishment of a desired objective. Plan your work first..then work your
Topic support guide Cambridge International AS and A Level Computer Science 9608 For examination from 2017 Topic 4.4.3 Project management PERT and GANTT charts Cambridge International Examinations retains
Project Scheduling: PERT/CPM CHAPTER 8 LEARNING OBJECTIVES After completing this chapter, you should be able to: 1. Describe the role and application of PERT/CPM for project scheduling. 2. Define a project
Project Time Management Plan Schedule Management is the process of establishing the policies, procedures, and documentation for planning, developing, managing, executing, and controlling the project schedule.
Project Scheduling Goals of the Unit Making the WBS into a schedule Understanding dependencies between activities Learning the Critical Path technique Learning how to level resources!2 Initiate Plan Execute
MECH 896 Professional Development for MEng Students Mohamed Hefny and Brian Surgenor (firstname.lastname@example.org and email@example.com) Winter : Lecture # Project Time Management Homework Discussion Homework
1 Project Management Tools for Project Management Work Breakdown Structure A complex project is made manageable by first breaking it down into individual components in a hierarchical structure, known as
MnDOT Project Management Office Presents: Schedule Float Presenter: Jonathan McNatty, PSP Senior Schedule Consultant DRMcNatty & Associates, Inc. Housekeeping Items Lines will be muted during the webinar
Project and Production Management Prof. Arun Kanda Department of Mechanical Engineering Indian Institute of Technology, Delhi Lecture - 9 Basic Scheduling with A-O-A Networks Today we are going to be talking
Basic s Project Scheduling and Tracking The process of building a schedule for any case study helps really understand how it s done. The basic idea is to get across to break the software project into well-defined
Scheduling Glossary Activity. A component of work performed during the course of a project. Activity Attributes. Multiple attributes associated with each schedule activity that can be included within the
The management of the projects with MS Project Author: AgimDerguti 1 What is Microsoft Project? Microsoft Project is a project management software program developed and sold by Microsoft Designed to assist
Use project management tools Overview Using project management tools play a large role in all phases of a project - in planning, implementation, and evaluation. This resource will give you a basic understanding
MnDOT Project Management Office Presents: Schedule Updates Presenter: Eric Costantino Senior Schedule Consultant DRMcNatty & Associates, Inc. Housekeeping Items Lines will be muted during the webinar Questions
CISC 322 Software Architecture Project Scheduling (PERT/CPM) Ahmed E. Hassan Project A project is a temporary endeavour undertaken to create a "unique" product or service A project is composed of a number
ME 407 Mechanical Engineering Design Spring 2016 Project Planning & Management Asst. Prof. Dr. Ulaş Yaman Acknowledgements to Dieter, Engineering Design, 4 th edition Ullman, The Mechanical Design Process,
Network analysis: P.E.R.T,C.P.M & Resource Allocation Some important definition: 1. Activity : It is a particular work of a project which consumes some resources (in ) & time. It is shown as & represented
hil61217_ch22.qxd /29/0 05:58 PM Page 22-1 22 C H A P T E R Project Management with PERT/CPM One of the most challenging jobs that any manager can take on is the management of a large-scale project that
Network Diagram Critical Path Method Programme Evaluation and Review Technique and Reducing Project Duration Prof. M. Rammohan Rao Former Dean Professor Emeritus Executive Director, Centre for Analytical
Chapter 1.7 Project Management Part I: Objective type questions and answers 1. Project financing is one of the step of project management- State True or False 2. Proposed new technologies, process modifications,
MnDOT Project Management Office Presents: Dashboards and Reporting for Program Management Presenter: Jonathan McNatty Senior Schedule Consultant DRMcNatty & Associates, Inc. Housekeeping Items Lines will
Student Version CHAPTER EIGHT Scheduling Resources and Costs McGraw-Hill/Irwin Copyright 2011 by The McGraw-Hill Companies, Inc. All rights reserved. Gannt Chart Developed by Henry Gannt in 1916 is used
8. Project Time Management Project Time Management closely coordinated Two basic approaches -bottom-up (analytical) -top-down (expert judgement) Processes required to ensure timely completion of the project
PROJECT COMPLETION PROBABILITY AFTER CRASHING PERT/CPM NETWORK M Nazrul, ISLAM 1, Eugen, DRAGHICI 2 and M Sharif, UDDIN 3 1 Jahangirnagar University, Bangladesh, firstname.lastname@example.org 2 Lucian Blaga University
Backward Scheduling An effective way of scheduling Warehouse activities Traditionally, scheduling algorithms were used in capital intensive production processes where there was a need to optimize the production
- 1 - PERT/CPM PERT Program Evaluation & Review Technique It is generally used for those projects where time required to complete various activities are not known as a priori. It is probabilistic model
Module 11 Software Project Planning Lesson 29 Staffing Level Estimation and Scheduling Specific Instructional Objectives At the end of this lesson the student would be able to: Identify why careful planning
Content Chapter 3 Managing the Information Systems (IS) Project Process of managing IS projects Skills required to be an effective project manager Skills and activities of a project manager during project
Scheduling 101 CPM Basics Phoenix Project Management Systems, LLC www.phoenixcpm.com Scheduling 101 CPM Basics Getting Started with CPM This guide is intended as an introduction to the Critical Path Method
Time Management Part 5 Schedule Development Richard Boser 6.5 Schedule Development Inputs Organizational Process Assets Scope Statement Activity List Activity Attributes Network Diagrams Resource Req ms
Project Planning What are you going to do in the project? Lecture Objectives To discuss the tasks in planning a project To describe the tools that can be used for developing a project plan To illustrate
10 Project Management with PERT/CPM 468 One of the most challenging jobs that any manager can take on is the management of a large-scale project that requires coordinating numerous activities throughout
Chapter 2: Project Time Management Learning Objectives o o o o Understand the importance of project schedules and good project time management. Define activities as the basis for developing project schedules.
Network Calculations The concepts and graphical techniques described in this week s readings form the basis of the tools widely used today to manage large projects. There is no way of simplifying the tasks
Object-Oriented Analysis and Design with the Unified Process John W. Satzinger Southwest Missouri State University Robert B. Jackson Brigham Young University Stephen D. Burd University of New Mexico ALL
Systems Analysis and Design in a Changing World, Fourth Edition -488-6-5 Copyright 7 Thomson Course Technology. All rights reserved. FOURTH EDITION SYSTEMS ANALYSIS AND DESIGN IN A C HANGING W ORLD John
Introduction A GUIDE TO NETWORK ANALYSIS by MICHAEL C GLEN The core technique available to Project Managers for planning and controlling their projects is Network Analysis. This short guide will provide
Real Time Scheduling Basic Concepts Radek Pelánek Basic Elements Model of RT System abstraction focus only on timing constraints idealization (e.g., zero switching time) Basic Elements Basic Notions task
Project Management Glossary THE VOCABULARY OF ACHIEVEMENT RON BLACK THE MENTOR GROUP WWW.RONBLACK.COM 800-381-8686 This glossary is an excerpt from Ron Black s book, The Complete Idiot s Guide to Project
ICT Project Management Software Project Planning By J. Ogutu Overview Step Wise project planning framework Preparation of a software project plan Planning and scheduling the activities in software project
Project Management Dr. James A. Bednar email@example.com http://homepages.inf.ed.ac.uk/jbednar SAPM Spring 2006: Project Management 1 Project Management A project is a temporary endeavour to produce
Chapter 6: Project Time Management King Fahd University of Petroleum & Minerals SWE 417: Software Project Management Semester: 072 Learning Objectives Understand the importance of project schedules Define
Chapter 9 Computer Scheduling Projects should be scheduled one byte at a time Computer Scheduling Critical path method (CPM) requires numerous computations to determine activity start and finish dates,
Unit : Project Planning and Scheduling Objective Ð To provide a brief introduction to project planning and scheduling. The critical area where project management meets system development. ackground Most
HOW TO START WORKING WITH P2WARE PROJECT MANAGER 7? This document contains introduction to P2ware Project Manager 7 views (P2ware Project Manager 7 walkthrough) and shows how to create high quality plans
.. Project planning project consists of a set of m activities with their duration: activity i has duration d i, i =,..., m. estimate Some pairs of activities are subject to a precedence constraint: i j
Using Simulation Models to Evolve Business Processes Marin Litoiu, Andrei Solomon York University with ideas from IBM Toronto Lab, CAS Agenda Motivation and Goals Intro to BP Life Cycle BP Evolution Loop
Section Four Learning Module C: Planning For Project Success 4.1 Module C: Objectives At the conclusion of this module you will be able to: Explain the process of planning. Produce an effective plan to
SECTION 01 311 NETWORK ANALYSIS SCHEDULE Part 1.1 DESCRIPTION A. Scope: Provide projected network analysis schedules for the entire Work and revise periodically. This type of schedule is acceptable for
IJSRD - International Journal for Scientific Research & Development Vol. 3, Issue 10, 2015 ISSN (online): 2321-0613 Planning, Scheduling and Resource Optimization for A Villa by using Ms-Project 2010 Mr.
1 Deming s 14 Points for TQM 1. Constancy of purpose Create constancy of purpose for continual improvement of products and service to society, allocating resources to provide for long range needs rather
Rochester Institute of Technology RIT Scholar Works Theses Thesis/Dissertation Collections 2009 Project management: a simulation-based optimization method for dynamic time-cost tradeoff decisions Radhamés
Software Engineering Prof. N. L. Sarda Computer Science & Engineering Indian Institute of Technology, Bombay Lecture - 2 Introduction to Software Engineering Challenges, Process Models etc (Part 2) This
Project Management Chapter 3 How Project Management fits the Operations Management Philosophy Operations As a Competitive Weapon Operations Strategy Project Management Process Strategy Process Analysis
2012 Cenresin Publications www.cenresinpub.org APPLICATION OF PROJECT MANAGEMENT TECHNIQUES IN A CONSTRUCTION FIRM Department of Production Engineering University of Benin, Edo State. E-mail: firstname.lastname@example.org
Chapter 11 Monte Carlo Simulation 11.1 Introduction The basic idea of simulation is to build an experimental device, or simulator, that will act like (simulate) the system of interest in certain important
efinitions:..5 Project planning project consists of a set of m activities with their duration: activity i has duration d i, i = 1,..., m. estimate Some pairs of activities are subject to a precedence constraint:
96 CRITICAL PATH METHOD (CPM) SCHEDULES How-to for Reading, Understanding, and Using CPM Schedules (without Direct Primavera Access.) 1 Objectives Learn to read, understand, and use CPM schedules (without
Project Scheduling: PERT/CPM Project Scheduling with Known Activity Times (as in exercises 1, 2, 3 and 5 in the handout) and considering Time-Cost Trade-Offs (as in exercises 4 and 6 in the handout). This
LECTURE 5: SOFTWARE PROJECT MANAGEMENT Mike Wooldridge 1 Introduction The software crisis of the 1960s and 1970s was so called because of a string of high profile software project failures: over budget,
EdExcel Decision Mathematics 1 Notes and Examples Critical Path Analysis Section 1: Activity networks These notes contain subsections on Drawing an activity network Using dummy activities Analysing the
LSS antt harts Lecture 8 antt harts and PM onstructing antt harts Staff Profile and Utilisation Learning outcomes: interpret the information in antt charts; construct antt charts following Pert/PM method;
ANALYSIS OF PROJECT PLANNING USING CPM AND PERT Rogelio Acuña Spring 2010 In Partial Fulfillment of Math 4395-Senior Project Department of Computer and Mathematical Sciences Faculty Advisor: Dr. Timothy
Project Scheduling & Tracking Traditional Techniques: Work Breakdown Structure (WBS) Gantt Charts Precedence Diagrams Earned Value Planning It is the mark of an instructed mind to rest satisfied with the
PROGRAMMING TECHNIQUES Chapter 5(Part 2) LEARNING OUTCOME At the end of this lesson, students will be able to: Understand the different types of planning techniques. Understand the network analysis. Formulate
Copyright Notice: Materials published by Intaver Institute Inc. may not be published elsewhere without prior written consent of Intaver Institute Inc. Requests for permission to reproduce published materials
SYSM 6304: Risk and Decision Analysis Lecture 5: Methods of Risk Analysis M. Vidyasagar Cecil & Ida Green Chair The University of Texas at Dallas Email: M.Vidyasagar@utdallas.edu October 17, 2015 Outline
A Generalized PERT/CPM Implementation in a Spreadsheet Abstract Kala C. Seal College of Business Administration Loyola Marymount University Los Angles, CA 90045, USA email@example.com This paper describes
Scope Management Scope management can be defined as controlling what is and what is not a part of the project. According to the 2004 PMBOK scope management: Includes the processes required to ensure that
Comput. Sci. Appl. Volume 1, Number 5, 2014, pp. 309-318 Received: July 18, 2014; Published: November 25, 2014 Computer Science and Applications www.ethanpublishing.com Anabela Tereso, André Guedes and
Test Fragen + Antworten October 2004 Project Management Wilhelm F. Neuhäuser IBM Corporation 2003 Question 1 All the following Statements about a WBS are true except that it a. Provides a framework for
Software Engineering Pert and Gantt exercises Lecturer: Giuseppe Santucci Degree of freedom! I.3a 3 3 I. I. 3 I.3b I.3c I.4 Exercise s goals. Draw a PERT network (AON) representing a project s characteristics.
Note: See the text itself for full citations. More courses at cie-wc.edu Understand the importance of project schedules and good project time management Define activities as the basis for developing project
Leaving Certificate Technology Project Management Teacher Notes 1 Project Management This is the first of three key topics that form Project and Quality Management in the Technology Syllabus core. These
Test Fragen October 2003 Project Management Wilhelm F. Neuhäuser IBM Corporation 2003 Question 7 Which term describes a modification of a logical relationship that delays a successor task? a. Lag b. Lead
Discovering the Value of SOA WebSphere Process Integration WebSphere Business Modeler Workshop SOA on your terms and our expertise Soudabeh Javadi Consulting Technical Sales Support WebSphere Process Integration
Topic # 4 CIS Project Management A Correspondence of Positions and Languages/Communications in CIS Analysis, Design, Development and Implementation (Engineering) Industry Correspondence of Positions and
Introduction to Project Management ECE 480 Erik Goodman What is Project Management? a method for organizing tasks a structured framework to help a group work productively tools to aid in task sequencing,
33 CHAPTER 4 LINEAR SCHEDULING METHOD (LSM) AND ITS APPLICATIONS 4.1 BASICS OF LINEAR SCHEDULING The LSM is a graphical technique in which the locations or the length of the linear project is indicated