...1. Programmable logic controller is a special purpose computer designed for single use or one of several controllers on a automation network for the control of a wide variety of manufacturing machines and systems using one of five programming languages. 3. Today PLC is a 6.5 billion dollar company, and growing 20% per year. 4. Similarities of PLC and PC are both have similar architecture, both have motherboards, processor, memory, and expansion cards. Differences are PLC has no removable disk drives and PLC’s do not have a monitor. 5. 7. The primary difference is the virtual relay used in PLC ladder logic program is only limited by size of PLC memory, physical relay used in relay ladder logic is limited to number of poles present on relay selected. 8. input contacts on a relay logic diagram represent actual components and contacts present in control system, input instructions in PLC ladder logic only represent data values stored in PLC. 10. The processor handles all logical operations and performs all the mathematical computations. Power supply provides power to processor and modules plugged into rack. The input interface provides link between processor and external devices that measures conditions in production area. Output interface is a location for termination of wiring and signal conditioner to provide proper voltage and output drive power required by output field devices. 12. 17. Reliability was then and continues...
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...Capella University | Social Theory Essay – SOC1000 | SOC1000 – Introduction to Human Society– Professor Worley | | Zachary Skidmore | 7/11/2012 | | Living in the American society of today there are not many times we all come together to sit down and listen. We are busy, we have careers, we have kids, and our free time is expensive. However, there are times that we as nation collectively take the time to stop and listen, when the President speaks. Recently President Obama sat down with a white house reporter to discuss his newly evolved views toward gay marriage. His interview was candid, it was spontaneous, and it set off all kinds of alarms across the societal landscape of America. An article that was recently published The New York Times details this interview, during which our President came out said that he thinks that gay people should have the right to marry. The topic of gay marriage is a massive social marker, one to surely start a discussion no matter which way you see it. The nation is seemingly divided on the topic, an opinion which will seem to sway a few percentage points here and there depending on the temperature of the society at that particular time (Calimes, 2012). By the President coming out with these statements he was he was not only literally making a statement but figuratively as well. One of the best ways to analyze this event from a sociologist’s point of view is to observe the symbolic interaction theory. Although this theory...
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...Ta’Kita Boykin REI Marketing Environment Worksheet List the current characteristics of each environmental factor as they relate to REI. U.S. Economy How does the current U.S. economy affect REI retail operations? 1. If the economy was in a depression, people would begin saving money and limiting their spending habits, which in turns results in a decrease in online/in-store purchases for REI because the value of their goods/products would have to increase. There will less buying for some goods and supplies which decrease the company’s sales and revenue. 2. Employees within the companies would lose jobs (turnovers) or employees making less money. Global Economy How does the current global economy affect REI retail operations? 1. If some products or goods were bought or traded from another country and the currency values were increase, REI would have to purchase these items at a higher price also and the scope of REI’s prices would decrease because customers would realize that the prices for what they want are too expensive and not want to buy them. 2. Fair Labor. REI has joined with other associations such as Outdoor Industry Association (OIA) and Fair Factories Clearinghouse (FFC) to crack down and ban fair labor violations. Legal and Regulatory Environment What types of legal and regulatory forces affect REI in the U.S.? 1. Consumer privacy. By REI customer’s using their social security numbers, credit cards, checks, and debit cards to make purchases...
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...basic compliance plan has been created to ensure YieldMore and customer data in the reconfiguration will be met. Software and hardware used will be checked to PCI DSS database to ensure compliance. The network plan will be required to meet these minimum requirements before compliance assessment test will be made. *Note: If third party is to host the payment process and procedure. They will be responsible to uphold the PCI DSS standards, they will be held liable if failure to maintain compliance. Build and Maintain a Secure Network Requirement 1: Install and maintain a firewall -In reference to previous network plan U1A1 a firewall will be in place in the LAN/WAN Domain & System/Application Domain to protect internal network from potential external threats. Requirement 2: Do not use defaults, such as default password -In reference to previous network plan U1A1 GPO and AD will be created and upheld for the internal network. GPO will be in place to provide username and password security policy for external network users. (System/Application Domain) Protect Cardholder Data Requirement 3: Protect stored data -Policy will be implemented to document all security policies and operation policy to secure cardholder data that will be stored in company database. (System/Application Domain & LAN Domain & Remote Access Domain) Requirement 4: Encrypt transmissions - SSL and HTTPS will applied to online transactions. Enabling encrypted connection through user login to encrypted...
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...IP Networking U1A1: IP Address Classes Network IDs used to be divided into classes, which were Class A, B, and C. These classes were allowed to have a range of addresses. This class-based system would work well for a while, but with the rapid growth of the Internet it became evident that this addressing scheme had to be changed in order to support the many networks that were being created. A classful system would be created and still used the IP addressing fundamentals of a classless system. This 32-bit IP addressing system is subdivided into two portions: the network address space and the host address space. Class A addresses were created for a very large network with few logical network segments and many hosts that have the high-order bit set to zero. The first octet (the left-most eight bits) is used to define the network ID. Class A address cannot be greater than 127 because a value of 128 would require the left-most bit be set to 1. Class B addresses always have the first two high-order bits that are set to 10 and are used for medium-sized networks that have a moderate number of hosts connected to them. The Class B network ID, will utilize the first two octets for the network ID, which allows more network IDs and fewer hosts than a Class A network, because it uses an additional octet for the network. Class C addresses are for small networks with few hosts. These addresses have the first three high-order bits set to 110, because Class C addresses use the first three...
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...TermPaperWarehouse.com - Free Term Papers, Essays and Research Documents The Research Paper Factory JoinSearchBrowseSaved Papers Home Page » Business and Management Case of Gm (Non-Market Environment) In: Business and Management Case of Gm (Non-Market Environment) Question 1: Identify and explain the 4l’s based on the case. a. Issues The dispute over the safety of the PICKUP TRUCKS, vehicle safety and defective design Firstly, the root cause is that the GM company has a unreasonable design of their gas tank on the collisions GM C/K pickups, the report shows that this pickups’ gas tank was too close with the bumper, it only 25 centimeters long. This is dangerous because that will cause explosions if there is any strike. A safety design should be place the gas tank on the top of axle or add on a shield between the gas tank and bumper. Further, the report also shows that the gas tank design was used for trucks manufactured between 1979 and 1987, and the fact is GM knows about their design problem but take no measure to fix or recall their cars because that will cause more cost. At the Moseley case happens, there are at least 130 other lawsuits involving the design of the gas tank GM need to faced. So the major issue of this case in this point is that whether the gas tank design and placement were defective and because that explosion case after their pickup was struck on the side by another vehicle. And those assumptions were proved by the GM engineer who is testified...
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...Objective: a) To determine the coefficient of discharge for a Venturi meter. b) To investigate the variation of piezometer (or static) head along the length of the Venturi meter. Theory: A venturi is a short tube with a constricted throat used to determine fluid pressure and velocities by measurement of differential pressures generated at the throat as fluid transverses the tube. It was by this method the venturi meter was develop by a scientist known as Clemens Herschel. [pic] Venturi meters can pass 25 – 50% more flow than an orifice meter. In a Venturi meter setup, a short, smaller diameter pipe is substituted into an existing flow line. In the Venturi Tube the fluid flow-rate is measured by reducing the cross sectional flow area in the flow path, generating a pressure difference. After the constricted area, the fluid is passes through a pressure recovery exit section, where up to 80% of the differential pressure generated at the constricted area, is recovered. By Bernoulli’s principle the smaller cross-sectional area results in faster flow and therefore lower pressure. The Venturi meter measures the pressure drop between this constricted section of pipe and the non-constricted section. [pic] The discharge coefficient for the Venturi meter is generally higher than that used for the orifice, usually ranging from .94 to .99. Due to simplicity and dependability, the Venturi tube flow-meter is often used in applications where higher turndown ratios...
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