...| Analog and Digital Comparison | NTC/362 Fundamentals in Networking | EDWARD BROWN | Jose Giralt | 3/18/2013 | | A signal is simply the transmission of data from one place to another place. In our day to day life we deal with various signals constantly like signals from music, power lines, telephones, and cellular devices. Analog and digital are two kinds of signals which are used for the transmission of information from source to destination. Usually the information to be transmitted from one place to another is either audio or video. This information signal is then transformed into those signals which can be transmitted via different channels. For the analog format, the data is transformed into electrical pulses with varying amplitude while for the digital format; the data is transformed into binary format representing two amplitudes. We have various such equipment like analog or digital phones, fax machines, modems, clocks, watches etc. Analog technology is the older one and has been used for decades. It is cheap too but the problem with analog signals is that there is a limitation on the size of the data that can be transmitted at any given point of time. With the advent of digital technology many improvements and new techniques have been introduced. Now days almost every appliance or equipment is based on digital technology. In this, the transmitter translate the data into binary form and the receiver re assemble and produces the...
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...Com435 Exam 3 Material Exam April 10th The Adoption of Technology * Technology advances are increasing at a growing rate * Moore’s variation of the Law: Technological advances double approximately every 18 months * Unlike processing speed, storage capacity, etc, adaption of technology is more difficult to measure * Adoption of particular technologies tend to follow a particular pattern A Common Pattern * Adoption (diffusion) of innovations follow a typical pattern known as the S-shaped curve The Diffusion of innovations * Everett Rogers – Diffusion of innovations * Innovation: an idea, practices, or objects that are perceived as new by an individual or other unit * Channels: the means by which messages about innovations travel from one person to another * Time: * Innovation decision-process for individual * Relative time to adoption compared to other adopters * Overall rate of adoption for innovation * Social System * Interrelated units that are engages in problem solving to accomplish a goal Types of Adopters – Innovators * Innovators * Shortest adoption curve * Possible Characteristics * Venturesome * Access to financial resources * High level of technical knowledge * Tolerant of uncertainty Types of Adopters – Early Adopters * Early Adopters * Most influential adopters * Possible characteristics ...
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...1. Communication Age- An age in which communication, technology, and media converge and deeply permeate daily life. (Convergence- the ways in which the many forms of technologically mediated and face-to-face communication overlap and intersect in our daily lives.) 2. Digital Natives- People for whom digital technologies already existed before they were born. 3. Digital Immigrants- People who have adopted and learned digital technologies later in life. 4. Communication- The collaborative process of using messages to create and participate in social reality. (Individual identities, relationships, organizations, communities, cultures, and ideas.) a) Process a) Collaborative b) Involves Messages c) Creative d) Participatory 5. Contexts of Communication- Each context or situation has unique characteristics or features that influences how messages are used and how meanings are constructed. 6. Face-to-Face Communication- Refers to situations in which the participants who are physically or bodily present speak to one another during the interaction. 7. Mediated Communication- Refers to communication or messages that are transmitted through some type of medium. 8. Interpersonal Communication- Refers to communication with or between persons. 9. Small Group Communication- Refers to the communication among the members of a small group of people working together to achieve a common goal or purpose. 10. Public Communication- Refers...
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...Steganography- A Data Hiding Technique Arvind Kumar Assistant Professor Vidya College of engineering, Meerut, India Km. Pooja Vankateshwara institute of computer Science and technology, Meerut, India ABSTRACT Steganography is the art of hiding information and an effort to conceal the existence of the embedded information. It serves as a better way of securing message than cryptography which only conceals the content of the message not the existence of the message. Original message is being hidden within a carrier such that the changes so occurred in the carrier are not observable. In this paper we will discuss how digital images can be used as a carrier to hide messages. This paper also analyses the performance of some of the steganography tools. Steganography is a useful tool that allows covert transmission of information over an over the communications channel. Combining secret image with the carrier image gives the hidden image. The hidden image is difficult to detect without retrieval. This paper will take an in-depth look at this technology by introducing the reader to various concepts of Steganography, a brief history of Steganography and a look at some of the Steganographic technique. In steganography, the possible cover carriers are innocent looking carriers (images, audio, video, text, or some other digitally representative code) which will hold the hidden information. A message is the information hidden and may be plaintext, cipher text, images, or anything...
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...Interpersonal communication is the technique we use to communicate our ideas, thoughts and feelings to one and other. (Eunson 2012:256) People use visual, written, oral, sense and nonverbal means to communicate. Individuals have communicated with each other for centuries through the medium of letters, telephone, groups with public speaking and one to one conversations. With the introduction of mass media ideas could spread to larger audiences however the means of imparting information required high level skills and equipment not available to the individual. The highly effective tools of the mass media have now become the tools of the individual to use in the digital age to help with interpersonal communication. Electronic communication has enhanced our ability to communicate with each other yet all these interpersonal communication tools still require social intelligence to be able to analyse a digital communication situation. The broadcast and print media have been traditionally the way we’ve broaden our ideas and gained information. These medium used highly effective devices such as visual and audio communication through things like edited video, persuasive interviews and skillfully written articles that captured the viewers attention. In the broadcast media, of television and radio it required high level skills such as video editing, audio recording and the use of expensive and specialist equipment. Broadcast and print media, like the newspaper and television shows are ‘communication...
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...Technology and Communication Paper Alloys P. Ceballos CJA/304 July 10, 2014 Technology and Communication Paper Technological advances in today’s digital world are in a fast pace development. Almost every year, new technologies or gadgets come out and constantly changing the way people interact, communicate and deliver the basic services needed. Since the 1800’s, police officers armed with gun and nightsticks to perform their duties and include in late 1870’s the use of telegraph and telephones, the installation of police call boxes and the adoption in 1880’s of the Bertillon system of criminal identification and in the turn of century, the use of fingerprinting systems to assist law enforcement agencies to identify and apprehend criminal offenders, whatever technological development have made there’s only one goal for these officers is to serve and to protect innocent lives. The criminal justice system also has to advance in ways to communicate with different agencies because communicating quickly and effectively can positively affect the results of prosecuting the offenders such as gathering and preserving evidences, collecting and recording interviews with victims and witnesses. “Computers have provided police with important technological advances like computer mapping to pinpoint crime areas”. (William Bratton, former New York City, Police Commissioner)There are many specialized and newer technologies that are available in the market and used today by different law...
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...& Analog Electronics (i) Integrated electronics : Analog and Digital Circuit and system (ii) Microelectronic Circuits (iii) Electronic Devices and Circuits (iv) OP Amp and linear Integrated Circuit (v) Solid State electronic devices (vi) Semiconductor devices | Jacob Millman & Christos C. Halkias Sedra & Smith J.B. Gupta Ramakant A.Gayakwad Streetman and Banerjee S.M.Sze | 2. | Communication System (i) Communication System (ii) An introduction to Analog and Digital Communication (iii) Communication System : Analog and Digital (iv) Modern Digital and Analog Communication System (v) Electronic Communication System | Simon Haykins Simon Haykins Singh and Sapre B.P. Lathi Kennedyand Davis | 3. | Signal and System | Oppenheim and Willsky | 4. | Optical Fiber Communication | Senior | 5. | Satellite Communications | Pratt and Bostian | 6. | Monochrome and colour | R.R. Gulati | 7. | Control System (i) Control System Engg. (ii) Automatic Control System (iii) Linear Control System | I.G. Nagrath & M.Gopal B.C. Kuo B.S. Manke | 8. | Electro Magnetic Theory (i) Elements of Engineering Electromagnetics (ii) Elements of Electromagnetics (iii) Engineering Electromagnetics (iv) Antenna and Wave Propagation | N. N. Rao Sadiku W.H.Hayt K.D. Prasad | 9. | Digital Electronics (i) Digital Design (ii) Digital Systems (iii) Modern Digital Electronics | M. Morris Mano Tocci & Widmer R. P. Jain...
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...YourFirstName YourLastName Instructor's Name Course Title 30 November 2013 Digital Life The Impact of Digital Life to Human Social and Cognitive Processes People in the current society are more connected to each other than any other time in human history, thanks to digital technology. But people are equally more distant from each other and lonely in their detached lives. The result is a strain on personal and social relations as well as thinking. To some people, digital media is their life and it directs every aspects of their living. While digital technology was intended to bring people closer, it has only served to push them further apart. And as it was intended to enhance knowledge, it has highly diminished the quality and nature of our thinking. In reality, it is constricting rather than expanding the horizon for human nature in social and cognitive processing. Digital media has changed how people think about themselves, relationships, and the sense of being human. Virtual interactions may make people feel good and secure but it leaves them diminished in a human sense. According to Turkle (11), it has eroded the ability of people to live comfortably offline. People feel out of place during face-to face interactions and there is a great sense of loss when one loses their phones or computer. Relationships between parents, friends, siblings and the community have significantly changed. People deal with members of their immediate family in the same way they...
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...switches. Dedicated circuit - it is used in reference to a phone or data line, or to an electrical circuit. Circuit switching - a methodology of implementing a telecommunications link in which two network nodes establish a dedicated communications channel (circuit) through the network before the nodes may communicate. Packet switching - a digital networking communications method that groups all transmitted data into suitably sized blocks that are transmitted through a medium that may be shared by multiple simultaneous communication sessions. Leased line - connects two locations for private voice and/or data telecommunication service. Time-division multiplexing -a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern. T-carrier system – one of several digital transmission systems developed by Bell Labs, sometimes called T-CXR. DS0 – a standard digital transmission rate for digital telecommunications, stands for Digital Signal Zero. DS1 – a T-carrier signaling scheme, devised by Bell Labs, that is widely used standard in telecommunications, stands for Digital Signal 1. Frame relay - Telecommunications technology that breaks data stream into small data packets called frames, to provide transmission speeds of 64Kbps to 2.4Gbps at relatively lower costs. Acronyms ATM - Asynchronous Transfer...
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...Follow this outline: Copy and paste the scenario. Then discuss Function of the report (informative or analytical) Organizational pattern (direct or indirect) Report format (Letter, memo, manuscript, printed form, digital format) Report type (information, progress, justification/recommendation, feasibility, minutes, summary) Delivery method (in person, by mail, by fax, by email, online) Topic #1: Persuading the loan officer at a local bank to lend you money for your proposed business venture. A business plan is quite detail oriented and should be both informative and analytical (Crockett-Hoggard, 2014). Banks are number driven and risk factors are also considered when lending money. A personal loan and business loan have different underwriting guidelines. In personal lending, an individual with an 850 credit score typically gets better interest rates than someone considered higher risk at 650. A similar scenario holds true for business loans. For instance, a company with assets and receipts, at a brick-and-mortar location, is more likely to get funding than a home-based internet company. The first page of the report is a basic introduction, cover letter. The business plan Section 1.0 standard practice is to include an Executive Summary. The executive summary of a report is formal and impersonal. An Executive Summary is an overview of the most important aspects written in the business plan. It should introduce, describe the business, services...
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...Chapter 1—Effective and Ethical Communication at Work MULTIPLE CHOICE 1. Communication skills are |a. |not as important in technical fields. | |b. |critical to effective job placement, performance, career advancement, and organizational success. | |c. |required only for high-level positions. | |d. |not as important in a down economy. | ANS: B | |Feedback | |A |Communication skills are needed in both technical and nontechnical fields. | |B |Surveys of employers consistently show that communication skills are critical to effective job placement, performance,| | |career advancement, and organizational success. | |C |Communication skills are needed at all levels of employment. | |D |Communication skills are especially valuable in a gloomy economy in which hordes of job seekers vie for limited | | |openings. ...
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...information communication technology, online games have gradually become part of people’s life in recent years. It is believed that digital games, as a catalyst, can be very useful teaching media. According to the Taiwan Institute for Information Industry in 2010 published report of using broadband network. Taiwan's Internet users most commonly used online gaming services (50.28%), the largest proportion of 12-19 years accounting for 83.08%-90.91%. For this reason, teachers must elevate students’ learning ability and knowledge through temporary assistance like information technology. To teachers and students, the meaning of this incoming digital trend counts for more challenges than opportunities. History, a subject about facts, should also be inextricably linked to digital world. Being a junior high history teacher, the researcher found that it would be better to use a lively way-learning by playing-we can use some digital assistance to arouse students’ learning motivation and academic performance. Moreover, traditionally teacher-centered didactic instruction is progressively substituted by student-centered various interactive learning patterns. The innovating digital learning which claims for enhancing learners’ motivation and initiative exploration is available to all. Terms like E-learning, U-learning, Digital Game-based Learning (DGBL) gradually represent information technology integrated into teaching in school. DGBL was first proposed by Marc Prensky in 2001. Through digital games...
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...How Digital Media has changed how people Introduction We live in a dynamic and progressive world where new ideas are actualized to better the state of human lives. Much can be said of the transformation that technological era brought to the world. However, of all the transformation nothing beats the effect that digital media has brought to the world. Never in the history of this planet has a single entity shape virtually every sector of our lives. The digital media is actually moving the world from money exchange, entertainment and communication. Communication is an aspect that has totally transformed with technology. Our view of the world and interaction hallmarks the effect of digital media and its subsequent effect on lives. On this accord,...
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...Chapter 1—Effective and Ethical Communication at Work MULTIPLE CHOICE 1. Communication skills are |a. |not as important in technical fields. | |b. |critical to effective job placement, performance, career advancement, and organizational success. | |c. |required only for high-level positions. | |d. |not as important in a down economy. | ANS: B | |Feedback | |A |Communication skills are needed in both technical and nontechnical fields. | |B |Surveys of employers consistently show that communication skills are critical to effective job placement, performance,| | |career advancement, and organizational success. | |C |Communication skills are needed at all levels of employment. | |D |Communication skills are especially valuable in a gloomy economy in which hordes of job seekers vie for limited | | |openings. ...
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...and is augmented and turned into current. The rise and fall in the current are the analog of the voice pattern. The digital signal is different form an analog because a digital signal is not as complex, a digital transmission uses pulses representing one bits and zero bits. Presently we use a combination of both analog and digital networks. In different areas of the network it is necessary to use analog and digital. A codec, which is a combination, is the words “coder” and “decoder” converts the analog signal to digital. There are various types of codecs for various purposes. In the “Public switched telephone network” (PTSN), there are specific codecs that will help reduce the amount of bits that are transmitted digitally in the PTSN. On a cell network there are codecs that condense the auditory voice to maximize the ability to transmit over the network. Video codec for communication require specific compression capabilities in order to send videos through the network efficiently. The word modem, which is a combination of the words "demodulate" and "modulate" is specific device that converts analog to digital signals over the network. However this conversion has many problems and proves to be the weakest link in the network. When a conversion takes place, many problems can occur; errors and distortions can be presented. Eventually the end result is that of an all-digital environment where at no point during transmission will there be any conversions needed to be...
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