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Appendix C Career Opportunities 1293 Fig. C.2 FlipDog.com job search. (Courtesy of Flipdog.com.) Vault.com: Finding the Right Job on the Web4 Vault.com allows potential employees to seek out additional, third-party information for over 3000 companies. By visiting the Insider Research page, Web users have access to a profile on the company of their choice, as long as it exists in Vault.com s database. In addition to Vault.com s profile, there is a link to additional commentary by company employees. Most often anonymous, these messages can provide prospective employees with potentially valuable decision-making information. However, users must consider the integrity of the source. For example, a disgruntled employee may leave a posting that is not an accurate representation of the corporate culture of his or her company. The Vault.com Electronic Watercooler is a message board that allows visitors to post stories, questions and concerns and to advise employees and job seekers. In addition, the site provides e-newsletters and feature stories designed to help job seekers in their search. Individuals seeking information on business, law and graduate schools can also find information on Vault.com. Job-posting and career-advancement services for the job seeker are featured on Vault.com. These services include VaultMatch, a career service that e-mails job postings as requested, and Salary Wizard , which helps job seekers determine the salary they are worth. Online guides with advice for fulfilling career ambitions are also available.
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1292 Career Opportunities Appendix C Monster.com (Cont.) Fig. C.1 Monster.com home page. (Courtesy of Monster.com.] Job seekers can visit FlipDog.com and choose, by state, the area in which they are looking for positions. Applicants also can conduct worldwide searches. After a user selects a region, FlipDog.comrequests the user to choose a job category containing several specific positions. The user s choice causes a list of local employers to appear. The user can specify an employer or request that FlipDog.com search the employment databases for jobs offered by all employers (see Fig. C.2). Other services, such as employment networks, also help job seekers in their search. Sites such as Vault.com (see the Vault.com feature) and WetFeet.com allow job seekers to post questions in designated chat rooms or on electronic bulletin boards about employers and positions. C.3 Online Opportunities for Employers Recruiting on the Internet provides several benefits over traditional recruiting. For example, Web recruiting reaches a much larger audience than posting an advertisement in a local newspaper. Given the breadth of the services provided by most online career services Web sites, the cost of posting online can be considerably less than posting positions through traditional means. Even newspapers, which depend greatly on career opportunity advertising, are starting online career sites.3
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Appendix C Career Opportunities 1291 Job seekers will find a number of time-saving features when searching for jobs online. These include storing and distributing resumes digitally, e-mail notification of possible positions, salary and relocation calculators, job coaches, self-assessment tools and information on continuing education. In this chapter, we explore online career services from the employer and employee s perspective. We suggest sites on which applications can be submitted, jobs can be searched and applicants can be reviewed. We also review services that build recruiting pages directly into e-businesses. C.2 Resources for the Job Seeker Finding a job online can greatly reduce the amount of time spent applying for a position. Instead of searching through newspapers and mailing resumes, job seekers can request a specific positions in specific industries through search engines. Some sites allow job seekers to setup intelligent agents to find jobs that meet their requirements. Intelligent agents are programs that search and arrange large amounts of data and report answers based on that data. When the agent finds a potential match, it sends it to the job seeker s inbox. Resumes can be stored digitally, customized quickly to meet job requirements and e-mailed instantaneously. A potential candidate also can learn more about a company by visiting its Web site. Most employment sites are free to job seekers. These sites typically generate their revenues by charging employers for posting job opportunities and by selling advertising space on their Web pages (see the Monster.com feature). Career services, such as FlipDog.com, search a list of employer job sites to find positions. By searching links to employer Web sites, FlipDog.com is able to identify positions from companies of all sizes. This feature enables job seekers to find jobs that employers may not have posted outside the corporation s Web site. Monster.com Super Bowl ads and effective marketing have made Monster.com one of the most recognizable online brands (see Fig. C.1). In fact, in the 24 hours following Super Bowl XXXIV, 5 million job searches occurred on Monster.com. 2 The site allows people looking for jobs to post their resumes, search job listings, read advice and information about the job-search process and take proactive steps to improve their careers. These services are free to job seekers. Employers can post job listings, search resume databases and become featured employers. Posting a resume at Monster.com is simple and free. Monster.com has a resume builder that allows users to post a resume to its site in 15 30 minutes. Each user can store up to 5 resumes and cover letters on the Monster.com server. Some companies offer their employment applications directly through the Monster.com site. Monster.com has job postings in every state and all major categories. Users can limit access to their personal identification information. As one of the leading recruiting sites on the Web, Monster.com is a good place to begin a job search or to find out more about the search process.
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1290 Career Opportunities Appendix C Outline C.1 Introduction C.2 Resources for the Job Seeker C.3 Online Opportunities for Employers C.3.1 Posting Jobs Online C.3.2 Problems with Recruiting on the Web C.3.3 Diversity in the Workplace C.4 Recruiting Services C.5 Career Sites C.5.1 Comprehensive Career Sites C.5.2 Technical Positions C.5.3 Wireless Positions C.5.4 Contracting Online C.5.5 Executive Positions C.5.6 Students and Young Professionals C.5.7 Other Online Career Services C.6 Internet and World Wide Web Resources Summary Terminology Self-Review Exercises Answers to Self-Review Exercises Exercises Works Cited C.1 Introduction There are approximately 40,000 career-advancement services on the Internet today.1 These services include large, comprehensive job sites, such as Monster.com (see the upcoming Monster.com feature), as well as interest-specific job sites such as JustJavaJobs. com. Companies can reduce the amount of time spent searching for qualified employees by building recruiting features on their Web sites or establishing accounts with career sites. This results in a larger pool of qualified applicants, as online services can automatically select and reject resumes based on user-designated criteria. Online interviews, testing services and other resources also expedite the recruiting process. Applying for a position online is a relatively new method of exploring career opportunities. Online recruiting services streamline the process and allow job seekers to concentrate their energies in careers that are of interest to them. Job seekers can explore opportunities according to geographic location, position, salary or benefits packages. Job seekers can learn how to write resumes and cover letters, post them online and search through job listings to find the jobs that best suit their needs. Entry-level positions, or positions commonly sought by individuals who are entering a specific field or the job market for the first time; contracting positions; executive-level positions and middle-management- level positions are all available on the Web.
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C Career Opportunities Objectives To explore the various online career services. To examine the advantages and disadvantages of posting and finding jobs online. To review the major online career services Web sites available to job seekers. To explore the various online services available to employers seeking to build their workforces. What is the city but the people? William Shakespeare A great city is that which has the greatest men and women, If it be a few ragged huts it is still the greatest city in the whole world. Walt Whitman To understand the true quality of people, you must look into their minds, and examine their pursuits and aversions. Marcus Aurelius The soul is made for action, and cannot rest till it be employed. Idleness is its rust. Unless it will up and think and taste and see, all is in vain. Thomas Traherne
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1288 Number Systems Appendix B B.21 How is the highest symbol value in the number systems we discussed related to the positional value of the first digit to the left of the rightmost digit of any number in these number systems? B.22 Complete the following chart of positional values for the rightmost four positions in each of the indicated number systems: decimal 1000 100 10 1 base 6 … … 6 … base 13 … 169 … … base 3 27 … … … B.23 Convert binary 100101111010 to octal and to hexadecimal. B.24 Convert hexadecimal 3A7D to binary. B.25 Convert hexadecimal 765F to octal. (Hint: First convert 765F to binary, then convert that binary number to octal.) B.26 Convert binary 1011110 to decimal. B.27 Convert octal 426 to decimal. B.28 Convert hexadecimal FFFF to decimal. B.29 Convert decimal 299 to binary, to octal, and to hexadecimal. B.30 Show the binary representation of decimal 779. Then show the one s complement of 779, and the two s complement of 779. B.31 What is the result when the two s complement of a number is added to itself? B.32 Show the two s complement of integer value 1 on a machine with 32-bit integers.
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Appendix B Number Systems 1287 B.11 Binary 1111 1010 1100 1110. B.12 Binary 111 011 001 110. B.13 Binary 0 100 111 111 101 100; Octal 47754. B.14 Decimal 2+4+8+32+64=110. B.15 Decimal 7+1*8+3*64=7+8+192=207. B.16 Decimal 4+13*16+15*256+14*4096=61396. B.17 Decimal 177 to binary: 256 128 64 32 16 8 4 2 1 128 64 32 16 8 4 2 1 (1*128)+(0*64)+(1*32)+(1*16)+(0*8)+(0*4)+(0*2)+(1*1) 10110001 to octal: 512 64 8 1 64 8 1 (2*64)+(6*8)+(1*1) 261 to hexadecimal: 256 16 1 16 1 (11*16)+(1*1) (B*16)+(1*1) B1 B.18 Binary: 512 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1 (1*256)+(1*128)+(0*64)+(1*32)+(0*16)+(0*8)+(0*4)+(0*2)+ (1*1) 110100001 One s complement: 001011110 Two s complement: 001011111 Check: Original binary number + its two s complement 110100001 001011111 000000000 B.19 Zero. EXERCISES B.20 Some people argue that many of our calculations would be easier in the base 12 number system because 12 is divisible by so many more numbers than 10 (for base 10). What is the lowest digit in base 12? What might the highest symbol for the digit in base 12 be? What are the positional values of the rightmost four positions of any number in the base 12 number system?
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1286 Number Systems Appendix B B.5 (True/False) The highest digit in any base is one more than the base. B.6 (True/False) The lowest digit in any base is one less than the base. B.7 The positional value of the rightmost digit of any number in either binary, octal, decimal, or hexadecimal is always . B.8 The positional value of the digit to the left of the rightmost digit of any number in binary, octal, decimal, or hexadecimal is always equal to . B.9 Fill in the missing values in this chart of positional values for the rightmost four positions in each of the indicated number systems: decimal 1000 100 10 1 hexadecimal … 256 … … binary … … … … octal 512 … 8 … B.10 Convert binary 110101011000 to octal and to hexadecimal. B.11 Convert hexadecimal FACE to binary. B.12 Convert octal 7316 to binary. B.13 Convert hexadecimal 4FEC to octal. (Hint: First convert 4FEC to binary then convert that binary number to octal.) B.14 Convert binary 1101110 to decimal. B.15 Convert octal 317 to decimal. B.16 Convert hexadecimal EFD4 to decimal. B.17 Convert decimal 177 to binary, to octal, and to hexadecimal. B.18 Show the binary representation of decimal 417. Then show the one s complement of 417, and the two s complement of 417. B.19 What is the result when the one s complement of a number is added to itself? SELF-REVIEW ANSWERS B.1 10, 2, 8, 16. B.2 Fewer. B.3 False. B.4 Hexadecimal. B.5 False. The highest digit in any base is one less than the base. B.6 False. The lowest digit in any base is zero. B.7 1 (the base raised to the zero power). B.8 The base of the number system. B.9 Fill in the missing values in this chart of positional values for the rightmost four positions in each of the indicated number systems: decimal 1000 100 10 1 hexadecimal 4096 256 16 1 binary 8 4 2 1 octal 512 64 8 1 B.10 Octal 6530; Hexadecimal D58.
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Appendix B Number Systems 1285 The octal number system (base and the hexadecimal number system (base 16) are popular primarily because they make it convenient to abbreviate binary numbers. The digits of the octal number system range from 0 to 7. The hexadecimal number system poses a problem because it requires sixteen digits a lowest digit of 0 and a highest digit with a value equivalent to decimal 15 (one less than the base of 16). By convention, we use the letters A through F to represent the hexadecimal digits corresponding to decimal values 10 through 15. Each number system uses positional notation each position in which a digit is written has a different positional value. A particularly important relationship that both the octal number system and the hexadecimal number system have to the binary system is that the bases of octal and hexadecimal (8 and 16 respectively) are powers of the base of the binary number system (base 2). To convert an octal number to a binary number, simply replace each octal digit with its three-digit binary equivalent. To convert a hexadecimal number to a binary number, simply replace each hexadecimal digit with its four-digit binary equivalent. Because we are accustomed to working in decimal, it is convenient to convert a binary, octal or hexadecimal number to decimal to get a sense of the number s real worth. To convert a number to decimal from another base, multiply the decimal equivalent of each digit by its positional value, and sum these products. Computers represent negative numbers using two s complement notation. To form the negative of a value in binary, first form its one s complement by applying Visual Basic s Xoroperator. This reverses the bits of the value. To form the two s complement of a value, simply add one to the value s one s complement. TERMINOLOGY base digit base 2 number system hexadecimal number system base 8 number system negative value base 10 number system octal number system base 16 number system one s complement notation binary number system positional notation bitwise complement operator (~) positional value conversions symbol value decimal number system two s complement notation SELF-REVIEW EXERCISES B.1 The bases of the decimal, binary, octal, and hexadecimal number systems are , , , and respectively. B.2 In general, the decimal, octal, and hexadecimal representations of a given binary number contain (more/fewer) digits than the binary number contains. B.3 (True/False) A popular reason for using the decimal number system is that it forms a convenient notation for abbreviating binary numbers simply by substituting one decimal digit per group of four binary bits. B.4 The (octal / hexadecimal / decimal) representation of a large binary value is the most concise (of the given alternatives).
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1284 Number Systems Appendix B number: 00000000 00000000 00000000 00001101 onesComplement: 11111111 11111111 11111111 11110010 To form the two s complement of numberwe simply add one to number one s complement. Thus Two s complement of number: 11111111 11111111 11111111 11110011 Now if this is in fact equal to 13, we should be able to add it to binary 13 and obtain a result of 0. Let us try this: 00000000 00000000 00000000 00001101 +11111111 11111111 11111111 11110011 00000000 00000000 00000000 00000000 The carry bit coming out of the leftmost column is discarded and we indeed get zero as a result. If we add the one s complement of a number to the number, the result would be all 1s. The key to getting a result of all zeros is that the twos complement is 1 more than the one s complement. The addition of 1 causes each column to add to 0 with a carry of 1. The carry keeps moving leftward until it is discarded from the leftmost bit, and hence the resulting number is all zeros. Computers actually perform a subtraction such as x = a - number; by adding the two s complement of numberto a as follows: x = a + ( onesComplement + 1 ); Suppose a is 27 and number is 13 as before. If the two s complement of number is actually the negative of number, then adding the two s complement of value to a should produce the result 14. Let us try this: a (i.e., 27) 00000000 00000000 00000000 00011011 +( onesComplement + 1 ) +11111111 11111111 11111111 11110011 00000000 00000000 00000000 00001110 which is indeed equal to 14. SUMMARY When we write an integer such as 19 or 227 or 63 in a C# program, the number is automatically assumed to be in the decimal (base 10) number system. The digits in the decimal number system are 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. The lowest digit is 0 and the highest digit is 9 one less than the base of 10. Internally, computers use the binary (base 2) number system. The binary number system has only two digits, namely 0 and 1. Its lowest digit is 0 and its highest digit is 1 one less than the base of 2.
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