...System Modeling Margaret Francies Strayer University Term Paper System Modeling Theory– CIS 331 Richard Guirguis Due on 12/8/2010 System Modeling Systems modeling or systems modelling is the approach to the study of the use of models to imagine and construct systems in business and IT development. In business and IT development the term "systems modeling" has multiple meaning. System Modeling can refer to analysis and design efforts, simulation and or system dynamics, and a study of the many uses of these models. There are different approaches to modeling: Agent based data and mathematical modeling. Quality management adopts a number of management principles that can be used by top management to guide their organizations towards improved performance. Principles such as: customer focus, leadership, people’s involvement, the process, system approach to management, continual improvement, facts, and a mutual benefit. . Decision making is a reasoning or emotional process which can be rational or irrational. The cognitive perspective is that the decision making process must be regarded as a continuous process integrated in the interaction with the environment. From a normative perspective, the analysis of individual decisions is concerned with the logic of decision making and rationality and the invariant choice it leads to it can be based on explicit assumptions or tacit assumptions. In decision making, objectives must be established and placed in the order of...
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...Palikhey who helped and supported us right throughout the semester. This paper would not have been possible without her cooperation and technical assistance. We would also thank our Institution and our faculty members without whom this project would have been a distant reality. We also extend our heartfelt thanks to our family and well wishers. I would like to take this occasion to specially thank University of Northern Virginia to provide us with excellent faculty and also in supporting us getting quality education remotely. Contents SL No Title Page no 1 Abstract 5 2 Introduction to Databases 6 3 OLTP and OLAP Systems 7 4 Difference between OLTP and OLAP 9 5 Data Modeling 13 6 Workflows in Enterprise level Data warehousing 18 7 Business Intelligence tools used in Data flow and Data Warehousing 21 8 Analysis in Data warehousing 24 9 Conclusion 28 10 Foot Note 30 11 References 31 ABSTRACT These days majority of the applications, may it be web applications or windows applications or mobile applications, are completely database dependent. Most of the application developments are becoming database driven environments, hence rendering databases as one of the most key elements in a software environment. This dependency on databases can attributed to the increasing number of data requirements from the...
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...Journal Article Review By Sadanand Patil. Instructor: Hamed Saremi. ABSTRACT: In this paper we are going to review three journal articles based on Business Process Modeling and Simulation. These articles explain the importance of business process modeling and simulation in business processes. Authors discuss how modeling and simulation is done. We start with some information about the business processes explained by the authors then we will discuss business process modeling and methods of modeling. We will also go through how simulation modeling helps to evaluate alternate business process strategies. We will also discuss benefits of simulation of business process modeling. The purpose of this paper is to give readers idea about the journal articles, whether they are worth reading and importance of these articles and how these articles will help to understand Business Process Modeling and Simulation. INTRODUCTION: Ray J. Paul, Vlatka Hlupic and George M. Giaglis explained in their article that due to increasing competition, organizations need to make major changes in their each step of business process. BPR (Business Process Re-engineering) helps an organization to enhance the business process and also creates new ways in order to gain a competitive edge in a real market. BPR helps to redesign the business system for the enhancement of an organization. Many organizations faced a failure because of many factors such as difficulty in adapting new process, cost...
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...Source: S. G. Powell and K. R. Baker, 2004. The Art of Modeling with Spreadsheets. New York: Wiley & Sons. Copyright © 2004 by John Wiley & Sons, Inc CHAPTER 1 INTRODUCTION MODELS AND MODELING Modeling is the process of creating a simplified representation of reality and working with this representation in order to understand or control some aspect of the world. While this book is devoted to mathematical models, modeling itself is a ubiquitous human activity. In fact, it seems to be one of just a few fundamental ways in which humans understand the world. As an example, a map is one of the most common models we encounter. Maps are models because they simplify reality by leaving out most geographic details in order to highlight the important features we need. A state road map, for example, shows major roads but not minor ones, gives rough locations of cities but not individual addresses, and so on. The map we choose must be appropriate for the need we have: a long trip home across several states requires a regional map, while a trip across town to find a new doctor’s office requires a detailed street map. In the same way, a good model must be appropriate for the specific uses intended for it. A complex model of the economy is probably not appropriate for pricing an individual product. Likewise, a back-of-the-envelope calculation may be inappropriate for acquiring a multibillion-dollar company. Models take many different forms: mental, visual, physical, mathematical...
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...The Transition from 2D Drafting to 3D Modeling Benchmark Report Improving Engineering Efficiency September 2006 — Underwritten, in Part, by — The Transition from 2D Drafting to 3D Modeling Benchmark Report Executive Summary D o more with less. The mandate hasn’t changed for manufacturers. They must develop more products with increasing complexity to address customer and competitive pressures. Yet, there’s no “give” in project timelines to adopt new technologies like 3D modeling to help them win. However, some manufacturers are not only adopting 3D modeling technology, but excelling at hitting their product development targets at the same time. How is it possible? Interestingly enough, it’s actually quite simple. Key Business Value Findings • Best in class manufacturers their hit revenue, cost, launch date, and quality targets for 84% or more of their products. • Best in class performers typically produce 1.4 fewer prototypes than average performers. • Best in class performers average 6.1 fewer change orders than laggard performers. • In total, best in class manufacturers of the most complex products get to market 99 days earlier with $50, 637 lower product development costs. Implications & Analysis How do they do it? • Best in class performers are 40% more likely to have engineers use CAD directly to ensure they stay close to the design. • Best in class performers are 24% more likely to take advantage of extended 3D modeling design capabilities. They are 55% more...
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...INTRODUCTION Why is forecasting used? Forecasting can be conducted for many purposes, so it is important that the reason for performing the calculation is clearly defined and understood. Some common reasons for forecasting include: • Planning and Budgeting – Using forecast data can help network planners decide how much equipment to purchase and where to place it to ensure optimum management of traffic loads. • Evaluation – Forecasting can help management decide if decisions that have been made will be to the advantage or detriment of the company. • Verification – As new forecast data becomes available it is necessary to check whether new forecasts confirm the outcomes predicted by the old forecasts. Knowing the purpose of the forecast will help to answer additional questions such as the following: 1. What is being forecast? – events, trends, variables, technology 2. Level of focus – focus on a single product or a whole line, focus on a single company or the entire industry 3. How often is forecasting conducted? – daily, weekly, monthly, annually 4. Do the methods used reflect the decisions needed to be taken by management? 5. What are the resources available to make decisions? – Lead-time, staff, relevant data, budget, etc. 6. What are the types of errors that could occur and what will they cost the company? DECISION TO BE TAKEN FACTORS INFLUENCING FORECASTING: • Technology DESCRIPTION OF THE SOFTWARE Vanguard introduced its first product...
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...ABOUT THE AGENCY The Agency Now Modeling Agency is the model and talent agency that is behind most of the advertisements you see in magazines and on television. The brands they have represented include RHB, KFC, Firefly Airways, Habib Jewels, Loreal, Proton and many others. They have also supplied models for fashion events you may have heard of such as Men's Fashion Week, Toy Watch, Hermes, Poney etc. Founded in 2008 by Sebastian Cheah, Now Modeling Agency has evolved into a prominent name in the Fashion, Modeling and Advertising industry. They were having received great praise and appreciation from top industry professionals, and establishing an almost cult-like following of new and established models. It was not long before word spread to other ASEAN countries, and offers started flooding in for foreign assignments. Now Modeling Agency also list at the top modeling agency in Malaysia. The Services Now Modeling Agency is a one-of-a-kind, full-service modeling agency, specializing in not only model and talent management, but also model training and development, event organization, casting services, and provision of on-ground promoters, just to name a few. Every assignment is unique – they each bear a distinctive creative vision and entail specific demands or requirements. When Now Modeling Agency undertakes an assignment, their main focus is to materialize the client's vision, not just market their talents and they also dedicate all their resources to support their client...
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...challenge yourself to look at the organization in new ways. You should question everything. Assume anything is possible, and eliminate the infeasible. Your role is to find the best solution to a business problem. Every fact must fit with every other fact. | Question 2. 2. (TCO 3) Which of the following is a traditional method of collecting systems requirements? (Points : 3) | Business process reengineering Observations Joint application design Rapid application development Prototyping | Question 3. 3. (TCO 3) One advantage of open-ended questions in an interview is (Points : 3) | a significant amount of time can be devoted to each interviewee. the interviewee is restricted to providing just a few answers. previously unknown information can result. they work well when the answers to the questions are well known. they are not biased. | Question 4. 4. (TCO 3) The analysis of documents can help you identify (Points : 3) | problems with existing systems. special information processing circumstances that occur irregularly and may not be identified by any other requirement’s determination technique. the reason why current systems are designed the way they are. the organizational direction that can influence information system requirements. All of the above | Question 5. 5. (TCO 3) Which of the following...
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...Healthcare Data Warehousing Doug Kelley Health Informatics I Professor Lu December 7, 2012 Abstract ` Dimensional modeling lays the groundwork for data warehouses. Dimensional modeling is a similar process to traditional Entity/Relationship modeling in regards to tables (entities) having joins (relationships) with other tables via primary keys. Dimensional modeling has been used as a standard in industry for decision support systems in other areas such as transportation, production, sales and marketing. (Parmanto, 1) Because healthcare has many complex events, it has lagged behind other industries in terms of data warehousing. This paper will discuss several techniques that can help overcome these complexities. Introduction A data warehouse has been defined as a database optimized for long-term storage, retrieval, and analysis of records aggregated across patient populations, often serving the longer-term business and clinical analysis needs of an organization (Shortliffe, 932). For a data warehouse to perform these roles, it must be architected or modeled appropriately. There are a couple of different approaches to modeling data warehouses. Dimensional modeling is becoming standard approach. Background Review Designing a data warehouse for healthcare presents many unique challenges for designing a database. These include such complexities as multiple diagnoses, multiple payers, multiple physicians; primary and secondary, and late arriving data, such...
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...Database Modeling Kelli Clipp Business Systems Analysis INF322 Arman Kanooni February 10, 2013 This paper discusses database modeling and one tool that can be used for the process. The tool I’ve chosen is based on the material in our textbook and article ‘Modeling for the future’. Database modeling is the process of software engineering which allows for the creation of an information system. In the article ‘Modeling for the future’, they compare database modeling to constructing a house (Carreon, Wang, & Watt, 1996). This comparison is based on the fact that one would use a blueprint when building a house and database modeling can be considered as the same concept. A data model is in essence a blueprint or a plan for the database and without it the database may not be very well built, as with any program, house or building you need a plan. There are several tools available for database designers to utilize and the key is choosing the tool which is right to be used that will meet all the requirements of the database to be created. In the article ‘Modeling for the future’ they discussed and compared products from 1996, and although this article appeared to cover the four key products for database modeling at that time, the market has changed...
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...Examining a Business Failure The Chrysler Group LLC was established from a not so successful merger between Daimler and Chrysler in 1998. It was in 2007 that Damiler sold Chrysler to Cerbus Capital Management. After filing for Chapter 11 bankruptcy, Chrysler Group LLC, formed in 2009 to establish a global strategic alliance with Fiat S.p.A., produces Chrysler, Jeep, Dodge, Ram, Mopar, SRT, and Fiat vehicles and products. With the resources, technology, and worldwide distribution network required to compete on a global scale, the alliance builds on Chrysler Group’s culture of innovation, first established by Walter P. Chrysler in 1925, and Fiat’s complementary technology that dates back to its founding in 1899 (Chrysler Group LLC, 2012). This paper will show what organizational behavior theories could have been used to predict the company's failure. Reasons For The Chrysler Failure A partnership is a mutually beneficial and continual relationship between seller and a buyer. Partners prefer to be based on dependence to each other than to behave as adversaries. Both will lose if any of them would abandon the partnership (Gherasim, 2001). Partnerships came in various forms such as mergers, acquisitions, or joint ventures. A company in trouble may utilize any given one as an option to achieve organizational growth or a global presence. Chrysler's reason for failure was that the partnership began solely on financial and economic information. What was not taken into account...
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...Abstract The study of history can easily have a somewhat anecdotal purpose behind examining it, but with the advent of Winston’s ‘Modeling for change’ we are able to discern a concentration of social forces working directly on the process of innovations rather than being a force on innovation. It is for this reason that we have the ability to chart future shifts in science, technology and culture through an evolutionary social based process that exist in a perpetual dialogue always tinkering, refining and suppressing devices throughout the ages. There has been a popular contention, a somewhat anecdotal purpose behind studying the past that has something to do with making sure that 'we learn from it' and are not destined to 'repeat it' as such. (Santayana 1906) But when it comes to new technologies it is easy 'at first glance, that there seems to be no patterns in the changes…In some cases the new technologies swept through quickly; in others the transition took decades. In some, the new technologies were complex and expensive to develop. In others… technologies were simple extensions of what the leading companies already did better than anyone else.' (Christensen 1997) What Winston has for the most part provided us, is a more 'crucial overview of how communication technologies develop' (Winston 1998 p11) within the social sphere, to that which 'Modeling for change' 'offers an understanding of the…examination of the operation of the accelerators and brakes, or social necessities...
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...to improve reporting and analysis. Data warehouse experts consider that the various stores of data are connected and related to each other conceptually as well as physically. A business's data is usually stored across a number of databases. However, to be able to analyze the broadest range of data, each of these databases needs to be connected in some way. This means that the data within them need a way of being related to other relevant data and that the physical databases themselves have a connection so their data can be looked at together for reporting purposes. Businesses then use this information to make better business decisions based on how they understand their customers' and suppliers' behaviors. Examples of businesses that use data warehousing and data mining are amason.com, Wal-Mart stores Inc etc. Both data mining and data warehousing are business intelligence tools that are used to turn information into actionable knowledge. The important distinctions between the two tools are the methods and processes each uses to achieve this goal. The relationship between data mining and data warehousing is that data, properly warehoused, is easier to mine. If a data mining query has to run through terabytes of data spread across multiple databases, which sit on different physical...
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...parties but also two Christmases, which meant double the presents, and double the love. Growing up, Tyra was often displayed around her family’s home in Inglewood living in her mother’s duplex and walking around her mother’s heels. She always role played with her mother as being a model. She was inspired to become a model from watching the weekly CNN program called “Style with Elsa Klensch” and “House of Style.” Although she first wanted to become a veterinarian and wanted to attend veterinarian school she was wined over by the modeling world. Tyra attended John Burroughs Middle School and graduated in 1991 from Immaculate Heart High School , a Catholic all girls school in the Los Feliz section of Los Angeles. During her Middle School days she was somewhat of a mean girl in middle school. She was popular and always in the gossip. Tyra says, “And if I didn’t want one of the other girls to be in the clique anymore, for whatever tiny little reason, I voted her out.”1 This being said she wasn’t the nicest person to be around with if you were not liked by the Searching Opportunities popular Tyra Banks. Although when high school came along so did a growth spurt. She was now that girl that was not like by the...
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...Hadzilacos Computer Technology Institute, University of Patras Box 1122, GR-26110, Patras, Greece thh@cti.gr Nectaria Tryfona National Center for Geographic Information and Analysis Univ. of Maine, Orono, ME 04469-5711, U.S.A nectaria@spatial.maine.edu Abstract. A special-purpose extension of the EntityRelationship model for the needs of conceptual modeling of geographic applications, called the Geo-ER Model, is presented. Handling properties associated to objects not because of the objects’ nature but because of the objects’ position, calls for dealing -at the semantic modeling levelwith space, location and dimensionality of objects, spatial relationships, space-depending attributes, and scale and generalization of representations. In order to accomplish this in the framework of ER and its derivatives, we introduce special entity sets, relationships, and add new constructs. The rationale as well as examples of usage of the Geo-ER model from actual projects are presented. 1. Introduction Is everybody special or are we all alike? Should we develop applications according to a special methodology for each class of applications, such as medical, business process and geographic, or should we use a single blanket approach for all? Personal preferences and philosophical discussions aside, it does seem that the general purpose side has won most battles in computer science, from hardware to programming languages to relational data models. On the other hand, successful special-purpose tools do exist...
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