between the wavelength and frequency of a sine wave. Define fundamental frequency. What is the relationship between a signal’s spectrum and its bandwidth. What is attenuation? Define channel capacity. What key factors affect channel capacity? Problems: Figure 1 shows the frequency domain function for a single square pulse. The signal pulse could represent a digital 1 in a communications system. Note that an infinite number of higher frequencies of decreasing magnitudes is needed to represent
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Data Models Consider a simple student registration. Specifically we want to support the tasks of students registering for or withdrawing from a class. To do this‚ the system will need to record data about what entities? What specific data about the entities will need to be stored? What is the cardinality between students and courses? Diagram the data model. While‚ considering a student class registration system for registering or withdrawing a system must have the capability to record data in
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Major Works Data Sheet: “The Things They Carried” Title: “The Things They Carried” | Author: “Tim O’Brien” | Genre: Fiction | Date Published: 1990 | Plot summary: First Lieutenant Jimmy Cross is in love with a junior in college named Martha while he is in the middle of a war in Vietnam. While he travels around‚ he and Martha write letters to each other‚ in which he writes with love and she just writes back as a friend. Throughout the story‚ O’Brien lists all of the supplies they all carry
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What Is A Data Dictionary? Per the IBM Dictionary of Computing‚ a data dictionary is a "centralized repository of information about data such as meaning‚ relationships to other data‚ origin‚ usage‚ and format." Essentially‚ it is documentation or data about data in a file or database‚ also called metadata. Typical Items In A Data Dictionary For each field or column in a database table‚ describe the following elements: Item Contents File/Table Name The name of the file or table where
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READING QUESTIONS DAY ANSWERS 1. Which of the following reading components do you find the easiest and the most difficult? Vocabulary Sentence/Syntax Getting the main idea Comprehension Others:_______________ Easiest: _____________ Difficult: _______________ EASIEST COMPONENTS: Vocabulary - 3 Sentence/Syntax - 11 Getting the main idea - 16 Comprehension - 1 DIFFICULT COMPONENTS: Vocabulary - 5 Sentence/Syntax - 9 Getting the main idea - 5 Comprehension – 11 2. Why do you
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Part A 1. What is a data structure? Data structure is a mechanism for storing data and organizing it in some way. The data structures you use in Alice are list and arrays. 2. Which automatically grows in size as you add items to it‚ lists or arrays? The list automatically expands as items are added to it. 3. When you drag a list tile and drop it on top of a placeholder in an instruction‚ a menu will appear. What will be on the menu? A menu appears showing a list of the methods that
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into prepared items‚ such as bakery products‚ etc. First‚ the table organizes the financial data into department‚ then financial account codes‚ item‚ and then sums the total amount of transactions for the code and then counts how many quantities of the items were in inventory during the period. Second‚ I think that this design maximizes the visual and informational presentation for the financial data. Given this design‚ the user of the information can readily identify what items belong to a certain
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undertaking Social research there are two most commonly used methods: quantitative and qualitative; There is often a great divide between the users of qualitative and quantitative methods of research. Put simply‚ quantitative research uses mathematical principals and it is statistical‚ therefore it is often viewed as more reliable and valid. On the other hand there is qualitative research which is based on interviewing and finding out the "why" of a particular situation. Qualitative research is interpretative
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Census Data 1. The 2010 Census reported 308.7 million people in the United States‚ a 9.7 percent increase from the Census 2000 population of 281.4 million. 2. About 16-17% 3. 42‚148 4. 15.9 % The one thing I find interesting is that the poverty level has risen in percentage. We should help each other out more. Table 59. Households‚ Families‚ Subfamilies‚ and Married Couples: 1980 to 2010 [In thousands‚ except as indicated (80‚776 represents 80‚776‚000). As of March. Excludes
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Data mining and warehousing and its importance in the organization Data Mining Data mining is the process of analyzing data from different perspectives and summarizing it into useful information - information that can be used to increase revenue‚ cuts costs‚ or both. Data mining software is one of a number of analytical tools for analyzing data. It allows users to analyze data from many different dimensions or angles‚ categorize it‚ and summarize the relationships identified. Technically‚ data
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