Contents Part 1: General review of data link layer 2 a) Explain the working principles of the data link layer. 2 b) Is controlled access better than contention for media access control? Discuss. 2 c) Why is error detection important in this layer? What is being measured? 3 d) Identify three significant noises that can cause errors in data communication digital circuits. Briefly explain. 3 Part 2: General review of error correction 4 a) Why is cyclical redundancy check (CRC)
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the slurry to be placed on the glass plates. A guide allows the applicator (with an adjustable layer thickness gauge) to be pulled along the glass plates as the slurry is dispensed. Some practice is needed to get a continuous body motion pulling the applicator across the plates to get an even layer. The glass plates must be the same thickness and extremely clean. Any oil or grease will result in a poor layer. Handle the plates with rubber gloves when washing or rinsing. Care is also needed if the edges
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1. Sufficient thickness to distribute the wheel load stresses to a safe value on the sub-grade soil. 2. Structurally strong to withstand all types of stresses imposed upon it. 3. Adequate coefficient of friction to prevent skidding of vehicles. 4. Smooth surface to provide comfort to road users even at high speed. 5. Produce least noise from moving vehicles. 6. Dust proof surface so that track safety is not impaired by reducing visibility. 7. Impervious surface‚ so that sub-grade soil is well
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that the product created was paracetamol when a thin layer chromatography test was performed and observed under ultraviolet light (which is discussed further down the page). An unknown substance was treated with acetic anhydrate and resulted with paracetamol. A compound that behaves in this matter is 4-aminophenol and is widespread in the industrial production of this drug. Upon these observations was the build up of “Chemical A” decided. When 4-aminophenol is t treated with acetic anhydrate it
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Experiment 5 Title : Thin Layer Chromatography Objectives: i. To distinguish polar and non-polar solvents. ii. To familiar with the analysis technique by using the thin layer chromatography. iii. To differentiate the retention factor‚ Rf for different compounds. [pic] Result: |Compound |Distance traveled by the compound | |o-nitroanaline |2.45
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Learning to be a Depth Camera for Close-Range Human Capture and Interaction Sean Ryan Fanello1‚2 1 Cem Keskin1 Shahram Izadi1 Pushmeet Kohli1 David Kim1 David Sweeney1 Antonio Criminisi1 Jamie Shotton1 Sing Bing Kang1 Tim Paek1 Microsoft Research 2 iCub Facility - Istituto Italiano di Tecnologia a b c e g d f h Figure 1: (a‚ b) Our approach turns any 2D camera into a cheap depth sensor for close-range human capture and 3D interaction scenarios. (c‚
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The Layers of Research Design Introduction: The purpose of doing research is mostly to answer a question or to solve a problem. The research work is started by identifying what type of data is needed and sources of obtaining this data. There are a number of data collection techniques such as questionnaires‚ interviews and personal observation. Besides all these sources secondary data can also be used. The final decision about overall research design is represented by selection of technique(s) used
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The United States has become a melting pot of many ethnic cultures. The diversity of these differing cultures abounds in families‚ communities‚ private and public organizations; and benefits our society with an increased cultural awareness and engagement‚ which has decreased stereotyping and decreased discriminatory practices on the basis of being different (Wilson‚ 2014). According to Manning & Curtis (2012)‚ diversity is about all person’s being accepted and respected and being able to believe
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Data Link Layer INTRODUCTION: Now a day’s communication is vital for the entire world‚ nothing happens without communication. The cell radio communication and wireless computer networks of GSM (Global System Mobile)‚ CDMA (Code Division Multiple Access) type are worldwide communication systems. All these communication systems are based on the reference model OSI-RM (Open System Interconnection-Reference Model) Description of OSI-RM System: OSI-RM is an International Standard ISO that defines
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Layers of the Grand Canyon During the earliest periods of the Grand Canyon formation where we have Tapeats sand stone‚ bright angel shale and muav limestone it would appear that there was a relatively shallow‚ warm sea. This is indicated by the presence of Trilobite fossils found in this layer which thrived in that environment. Trilobites were early animals that had exoskeletons that are usually the only part of them that is preserved in the fossil record. They were marine bottom feeders who thrived
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