Business letter Essay Example | Topics and Well Written Essays - 250 words - 4

Business letter - Essay Example This is indicated by CEO comment that poor performance resulted from increase in gas prices, and people cutting back on carbohydrates. Instead, if I was the CEO I could have refrained from making any comment and instead order a quick investigation to be done by the experts so that we come up with the appropriate measure to change the situation. Also, for a firm to succeed there must be a close relationship between top management and their subordinates. This would have ensured that the top management has a deep insight of what could have been led to tremendous decrease in sales. As a result, the most hurt personnel in the organization are the stockholders who have invested their capital in the business for returns. This is because the situation could have caused depreciation of the value of their investment rather than appreciation. In my view, failure for the company to remain competitive in the market can be attributed by all stakeholders who have a role to play in ensuring that the company performs well. In addition, overreliance on top management to undertake all roles in the company could also have led to poor performance. Instead, the organization could have agitated for team work an aspect that could have increased coordination in all sectors involved in

Research an Entertainment Business Paper Example | Topics and Well Written Essays - 500 words

An Entertainment Business - Research Paper Example (ATG, 2011). The business growth that ATG has achieved in less than two decades is a success story, specially attributed to Joint Chief Executive & Creative Director Howard Panter and Joint Chief Executive  Rosemary Squire OBE. Hoyle (2009) has recognizes the effort in these words, â€Å"It is an extraordinary story and one that could have distinct consequences for theatre goers, particularly in the regions, where the Ambassador Theatre Group (ATG) now has five times as many seats as any other operator.† ATG also acquired Live Nation’s Theatres in 2009 to further strengthen its market share. The group achieved the stature of single largest theatre group from scratch as Nighingale states, â€Å"That’s the challenge for Howard Panter and Rosemary Squire — who have seen ATG grow from nothing into the most important theatre group in the nation — have wisely or unwisely set themselves.† (Nighingale, 2009) The business of ATG falls under the doma in of art and media production, theatre and cinema industry. The ATG group run theatre and cinema, produces and invest in plays, films, dramas, live shows, comedy plays etc. It is a vast business sector that has diverse footings. â€Å"The arts, entertainment & recreation sector is a vast industry classification as per the NAICS – North American Industry Classification System.

Music vs. Book Essay Example for Free

Music vs. Book Essay Books and music are not a direct comparison normally but when it comes to youngsters and their lives both have a very strong influence. When we are bored, it is the time we listen to music or read a book. These two are the common things we are doing in our leisure time. People should be influenced by music and book. Music can have both a positive as well as negative impact on an individual’s life. The nature and kind of music defines that what type of message they render on the youngster. While books of any type give you either eye opening or well meaning but misguided information on subjects ranging from the simplest subjects to the more sophisticated. Books can even be used by those who are looking for answers in life. Many people report finding the perfect book to answer the burning questions in their minds. Books are more limited: fiction like novels and short stories and non-fiction like memoir, history, biography, self help, and philosophy. Reading books require a larger share of our time. We cannot also do another thing while reading a book. We cannot read a book while washing clothes. Books are more intellectually stimulating and has bigger journey than music. On the contrary, music doesnt answer questions by itself. Music answers feeling or disturbed emotions looking for an outlet. It exists in an extraordinarily wide array of genres and styles like vocal music (song, choral music, and opera), solo instrumental, chamber, orchestral, band and etc. We will listen to the music we love countless times over the course of our lives. We can multitask while listening to music. We can listen to music while running or washing clothes. Music are more passion and emotional than books. Whether you want to listen to music or read a book, they can both give positive and negative influences, affect all kinds of age groups, and cause different views of the world.

Antenna Technology Wireless

Antenna Technology Wireless Definition Antenna is an electronic device mostly known as transducer that is designed to receive and transmit electromagnetic waves and can be very effective in the telecommunication systems. It was the most neglected section of all the personal communication systems. But with the rapid evolution of the technology, communication is expected to be transmitted and received quickly and with fewer errors whether it is through wireless networks or otherwise, thus antennas can solve this problem. Actually it is not the Antennas which are smart but the smart system that makes it work are smart. Smart antennas consists of many other antennas which when combine together would produce or receive signals faster and more efficient. Normally this set of antennas is called MIMO which means multiple inputs -multiple outputs. . Beamforming is a technique where signals are processed and send to the direction of the receiver or vice-versa. The signal is either a fix pattern or adaptive pattern that is modified to make maximum usage of signal. Background Smart Antennas can be referred as a new technology which is used with the mobile communication, but in fact the first Smart Antennas were introduced to use by the government in the military application in 1960s. The transmission of the signal used directed beams to avoid environmental interferences such as noise and at the same time hiding transmitted data from enemies. During those days the antennas structure was very large and it was time-consuming to calculate the exact transmission rate and correctness of the signal. In 1987, the concept of wireless communication has been invented by Marconi and since then there has been an extensive and continuing increase in the use of mobile communication. Newer technologies and approach were explored and deployed and when the latest one that is the Space Division Multiple Access (SDMA) has been emerged it brings a promising future to the wireless communication. SDMA is based on the use of Smart Antennas and researchers have worked on this technology to apply it on personal communication. Types of Smart Antennas There are two main types of Smart Antennas Switched beam is the simplest structure of Smart Antennas; it forms fixed multiples beams to serve users in a predefined way. The signal gives its best performance by switching from one beam to another when the user of the mobile moves through their cell. The table below shows how this approach works: But the problem with this beam occurs is the user is not in the middle of the main beam. The other type is the Adaptive Array Antennas. It is the most advanced approach of the Smart Antenna System as it automatically adjusts the beam with the condition of environmental factor that is the movement of the user and any interferers. Furthermore it also identifies, track and reduce any interfering signals and it maximize the signal radiation in the direction of the mobile user. The adjustment is attained the incoming signal is multiplied with complex weights and then summing them together to obtain the desired radiation pattern. Categories of Smart Antennas The Smart Antennas fall into three categories SIMO, MISO, and MIMO. Single-Input and Multiple-Output (SIMO) uses a single antenna for transmission to be received by multiple antennas in wireless communication. A benefit of this category is that the antennas are combined to reduce errors and improve the transmission distance but in some cases this gives rise to problem with multipath effect. As discussed in SearchMobileComputing, 2005 website when an electromagnetic field (EM field) is met with obstructions such as hills, canyons, buildings, and utility wires, the wavefronts are scattered, and thus they take many paths to reach the destination. The late arrival of scattered portions of the signal causes problems such as fading, cut-out (cliff effect), and intermittent reception (picket fencing). In digital communications systems such as wireless Internet, it can cause a reduction in data speed and an increase in the number of errors. Thus two or more antennas as transmitted can solve this problem. Multiple-Input, Single-Output (MISO) means that there are multiple antennas to transmit but a single antenna to receive. This has practically the same benefits and limitations as that of SIMO, but this technology has widespread application in Digital TeleVision (DTV), Wireless Local Area Networks (WLANs), Metropolitan Area Networks (MANs) and mobile communications. Multiple-Input, Single-Output (MIMO) used multiples antennas for transmitters and as well as receiver for wireless communication. Antennas which were not a great subject of discussion recently become the most important category in wireless communication. Especially when Researchers finally proved that with MIMO antennas system there are lots of advantages such as greater receiver gain, increased data rates, larger network throughput, and improved reliability through antenna diversity. IEEE 802.11n wireless standard which is expected in 2009 uses MIMO to increase maximum speed to 100 Mbps and beyond, double the 802.11a and 11g wireless standards. This article was extracted from Techworld.com which clearly shows the use of MIMO system in wireless communication. Cox, 2008 says that â€Å"MIMO has made its way into chipsets and could be in WLAN devices by year-end. The 3rd Generation Partnership Project, a collaboration of telecom standards groups, is also evaluating MIMO techniques for use in cellular networks. MIMO doubles the spectral efficiency compared with that of current WLANs. So far, the only company with MIMO chipsets is Airgo Networks, which launched its products in August 2003. MIMO is unique because it multiplies bandwidth by essentially providing multiple channels between devices, says Ben Manny, director of the radio communications laboratory in Intels corporate technology group.† MIMO can be classified into three categories Precoding, Spatial Multiplexing and Diversity Coding. Precoding is multi-layer beamforming to support MIMO radio system. It is used for single-user MIMO or multiple-user MIMO in a linear or non-linear algorithm. Spatial multiplexing is a way to transmit and separate high rate signal into multiple lower rate streams and each stream is transmitted from a different transmit antenna in the same frequency channel. Diversity methods is a single stream (unlike spatial multiplexing) to transmit data and is coded using techniques called space-time coding. Overview Architectures of Smart Antenna (MIMO) One of the biggest problems in wireless telecommunication is fading and inter-symbol interferences as shown in the diagram, below. Fading refers to the distortion of intensity over certain propagation media and Inter-symbol interference (ISI) occurs when there is reflection caused by other remote objects. The transmitted signal, at the receiver end are overlapped and delayed. To overcome this problem we use MIMO architecture, Orthogonal Frequency-Division Multiplexing (OFDM) modulation and Low-Density Parity-Check (LDPC) coding. MIMO operate in two modes diversity mode and spatial multiplexing mode to solve the problem. Diversity Mode The use of two or more antennas that are spaced sufficiently apart such that they can receive signals from independent signal paths are involve in a Simple Receive Diversity. A basic way to select an optimal receive antenna from an array of antennas is Selection Combining, whereby the receiver switches to another antenna whenever it detects weak signals or a high noise level from the current receiving antenna. More sophisticated techniques such as Maximum Ratio Combining (MRC) receive on multiple antennas simultaneously and apply advanced signal processing algorithms to combine the different versions of the received signals to maximize SNR and minimize receive errors. Selection Combining and MRC can be implemented on just the receive side of the link as shown in the figure below. (Video54, 2008, p3) Spatial Multiplexing Mode In rich multipath environments with multiple uncorrelated signal paths as figure 5, Spatial Multiplexing (SM) allows the sender to transmit different portions of the user data on multiple paths in parallel to increase capacity. The target receiver must implement a corresponding de-multiplexing algorithm to recover the original information stream from multiple antennas. In an ideal multipath environment, SM can increase the capacity of a single frequency channel linearly with the number of transmit antennas used. (Video54, 2008, p4) Figure 5: Spatial diversity (Video54, 2008, p4) Spatial Multiplexing requires the same multiplexing algorithm on both sides of a communications link. Therefore it is not interoperable with existing 802.11a/b/g devices. Until 802.11n is defined, only SM client and SM network devices from the same vendor can communicate with each other. (Video54, 2008, p4) In contrast, Selection Combining and Maximum Ratio Combining are diversity techniques that can be implemented on just one side of a communications link; therefore they can benefit all existing 802.11a/b/g devices even when diversity is only implemented on the Access Point. (Video54, 2008, p4) Thus the above explanation shows how MIMO which is being a category of Smart Antennas is designed. Benefits/Limitations of Smart Antennas Benefits Smart Antennas System, being one the latest technology in progress has brought lot of benefits. It serves as a dual purpose that is while enhancing the signal quality; it also increased the reuse of the frequency. The benefits are in more details below: As Smart Antennas receive signal from several antennas, this increase the power for higher gain of signal. The Antennas also focuses on the communication device which allows the range of operation and the service by the antennas to increase. Thus reducing the cost by lowering the amplifier costs, power consumption and result in a higher reliability. To be more precise, with Smart Antennas the network providers will not require as many antennas/base stations to provide coverage. (Lehne et al. 1999, p. 5) Furthermore, Smart Antennas provide the facility to reuse the frequencies which can increase the number of users. This also add to the factor of cost reduction, that is if more users are on the same frequency there will be less operating cost for purchasing the frequency space. Interference will also be suppressed with the introduction of the Antennas system. The transmission pattern will be generated directly as before it was radiated from all the direction and increases interferences. Thus the suppression will also increase the ability to reuse and achieve a better coverage. With Smart Antennas signal are transmitted while targeting the communication device which can also be used to determine the accurate geographic information of the device. This can allow network providers to offer new services to the devices for example guiding emergency services to the location or the locality information. This system also increases security, as radiation of the signal is direct and not as in the traditional way when it was omni-directional. If someone wants to intercept the transmissions they would need to be at the same location or between the two communicating devices. (Gadh et al. 2003) Moreover, with the frequency reuse there in an increase in the bandwidth as Smart Antennas provide diversity. The adaptive array utilize multi-path signal to reach a device and reduce the effective delay spread of the channel and allowing higher bit rates to be supported without an equalizer. And as Smart antennas are not a new protocol or standard, it can easily be integrated with existing non smart antennas and devices. Limitations As all other system, Smart Antennas also has some constraints. Lots of faults or problems can occur which can be very hard to diagnose as Smart Antenna is much more complicated than the traditional one (Lehne et al. 1999, p. 5). And also though there will be a reduction in the cost factor with the frequency reuse when the system is already implemented but while implementing this complex system, they are far more expensive than the traditional antenna. Furthermore due to the antenna arrays which are utilized by smart antenna systems, they are much larger in size than traditional systems. This can be a problem in a social context as antennas can be seen as ugly or unsightly. (Lehne et al. 1999, p.6) Smart Antennas need to have the best location to operate because of the direct radiation and not as the traditional one. For example in a road context, smart antennas are better situated away from the road, unlike normal antennas which are best situated along the road. (Lehne et al. 1999, p . 6) Need of Smart Antennas Smart Antennas has been required to accommodate with the future of mobile communication that is to significantly improve the performance of wireless performance and increase the number of users. So Spatial Division Multiple Access (SDMA) which is a satellite communication mode has exploited this technology to optimize the use of radio spectrum and minimized cost. SDMA also known as SDM (spatial-division multiplex) has also used Smart Antennas or adaptive array to adjust dynamically with the changing traffic and the user requirements by providing frequency reuse and antennas that are highly directional, unlike the previous wireless system like FDMA, TDMA or CDMA. Frequency Division Multiple Access (FDMA) was the first generation of wireless networks communication. FDMA technique was a basic technology in analog that was used by the Advanced Mobile Phone Service (AMPS) and was the most widely technology installed in mobile phone in North America. FDMA assigned each channel to only one user at a time and is also used in the Total Access Communication Systems (TACS). But The Digital-Advanced Mobile Phone Service (D-AMPS) which also uses FDMA adds TDMA to get three channels for each FDMA channel, tripling the number of calls that can be handled on a channel. (Sanchez, 2003) Time Division Multiple Access (TDMA) was first used BY D-AMPS then Global System for Mobile communications (GSM) in 2G cellular system, and Personal Digital Cellular (PDC). Each of them implements TDMA differently and in incompatible way (Search Networking, 2006). TDMA is a channel access method to share medium network and used in digital mobile communication dividing signal into three time slots in order to increase the amount of data that can be carried. It also allows multiple stations to share the same transmission medium while using only the part of its bandwidth they require. TDMA is used for Digital Enhanced Cordless Telecommunications (DECT) and also in the satellite system and combat-net radio. (Wikipedia, 2008) Code Division Multiple Access (CDMA) refers to the second generation (2G) and third generation (3G) wireless communication. It can be said to be an alternative to TDMA and FDMA, but CDMA has a much higher bandwidth than the data being communicated in contrast with TDMA which divides access by time and FDMA divides by frequency. CDMA is a form of multiplexing, which allows numerous signals to occupy a single transmission channel, optimizing the use of available bandwidth and also allows roaming (Search Telecom, 2007) but it does not guaranteed the future of mobile communication and this is where SDMA arise and become the solution. Conclusion Even though Smart Antennas has some limitations, it has proved that it is the latest technology to bring an excellent future to wireless communication. With the adaptive array system the communication would be clearer with better signal and also the frequency reuse is of great advantage to cost reduction. Furthermore, MIMO is one of the latest discussed and the IEEE 802.11n wireless standard is expected in 2009. So it can be concluded that Smart Antennas has a great future. References Web ProForum Tutorials Smart Antenna Systems http://www.iec.org/online/tutorials/acrobat/smart_ant.pdf Date accessed 15/04/08 Wikimedia Foundation, Inc (2008) Smart Antennas, http://en.wikipedia.org/wiki/Smart_Antennas, Date accessed 18/04/08. TechTarget (2004) Smart Antenna http://searchmobilecomputing.techtarget.com/sDefinition/0,,sid40_gci1026138,00.html Date accessed 18/04/08. Paulraj (2008) Smart Antenna Research Group http://www.stanford.edu/group/sarg/ Date accessed 20/04/08. CDMA Development Group (2008) Smart Antennas http://www.cdg.org/technology/cdma_technology/smart_antennas/index.asp Date accessed 24/04/08. Shetty, K.K (2004) Chapter 1 Introduction http://etd.lib.fsu.edu/theses/available/etd-04092004-143712/unrestricted/Ch_1introduction.pdf Date accessed 24/04/08. Cugnin, A (2008) Smart antennas http://broadcastengineering.com/hdtv/smart_antennas/ Date accessed 30/04/08. Georg zur B, Thomas C Smart antennas: A design alternative http://www.eetasia.com/ARTICLES/2005FEB/B/2005FEB16_RFD_TA.pdf?SOURCES=DOWNLOAD Date accessed 05/05/08. Kassner, M (2008) /a>Whats MiMo? http://wedothatradio.wordpress.com/2008/04/10/mimo-mike-kassner/ Date accessed 09/05/08. Cox, J (2008) Which smart antenna system will win? http://www.techworld.com/mobility/features/index.cfm?featureid=396 Date accessed 15/05/08. WTEC Hyper-Librarian(2000) Smart Antenna Advantages http://www.wtec.org/loyola/wireless/06_04.htm Date accessed 21/05/08. Hall, D (2007) Smart Antennas http://www.robotification.com/content/view/13/ Date accessed 22/05/08. Sanchez, R.W (2003) FDMA http://searchmobilecomputing.techtarget.com/sDefinition/0,,sid40_gci213959,00.html Date accessed 24/05/08. TechTarget (2006) TDMA http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci214175,00.html Date accessed 24/05/08. Wikimedia Foundation, Inc (2008) Time division multiple access http://en.wikipedia.org/wiki/Time_Division_Multiple_Access Date accessed 24/05/08. Wikimedia Foundation, Inc (2008) Code division multiple access http://en.wikipedia.org/wiki/CDMA Date accessed 24/05/08. TechTarget (2007) CDMA http://searchtelecom.techtarget.com/sDefinition/0,,sid103_gci213842,00.html Date accessed 24/05/08. Intel Journal (2006) MIMO Architecture for Wireless Communication http://www.intel.com/technology/itj/2006/volume10issue02/art07_MIMO_Architecture/p06_mimo_systems_ofdm_ldpc.htm Date accessed 25/05/08. Video54 (2008) Mimo and Smart Antenna Techniques for 802.11a/b/g Networks http://www.edsl.com.au/ruckus/whitepapers/smart-antennas.pdf Date accessed 25/05/08.

Evil in The Picture of Dorian Gray: :: Picture Dorian Gray Essays

Evil in The Picture of Dorian Gray:      Ã‚  Ã‚  Ã‚  Ã‚   The Picture Of Dorian Gray is yet another novel portraying evil.   The theme is very much reflected by the book's setting, plot structure and characterisation.   It shows how individuals can slowly deteriorate because of the evil lying within themselves.   The evil of this book is the evil created by one's self and thrusted upon one's self.   The power of greed and selfishness take over Dorian Gray and create an ugly evil side to him.      Ã‚  Ã‚  Ã‚  Ã‚   The mid eighteenth century was a very influential era, specially in England.   This period judged much upon appearance and status.   Dorian was a very wealthy, intelligent man with a very high status.   He knew the very influential and rich people in his town as well.   His beauty charmed the world.   Basil was inspired to draw his portrait in order to preserve his beauty and youth. Dorian recognised that as long as he remained young he would be handsome.   He dreaded the day that he would age slightly and start to form wrinkles and such ugly (in Dorian's opinion) ugly things.   He believed that that day would deprive him of triumphs that would result in him being miserable.      Ã‚  Ã‚  Ã‚  Ã‚   The degree of evil within Dorian increases as the plot develops.   By trading his soul for his youth, Dorian rids of the good inside of himself.   The plot proves to us that evil does actually lie within an individual.   From the moment that he becomes forever young he begins to deteriorate.   Even once he reached his epiphany and saw his evil through the portrait he simply denied seeing it and continued his malicious deeds.      Ã‚  Ã‚  Ã‚  Ã‚   The characterisation of the book is one of the most important elements of this book.   Dorian begins by being a very naà ¯ve lad.   He is very easily influenced by others especially his two new good friends; Basil and Lord Henry. Basil, the painter of the portrait, influenced Dorian in more of a good, honest way.   While Lord Henry, although not being evil himself, gave him a more evil insight on life.   Both of them changed his life forever.   How little they both knew what went on inside that man.      Ã‚  Ã‚  Ã‚  Ã‚   Basil does not have any real direct influence on the youngster; without

genocide Essays -- essays research papers

Genocide is an extremely broad subject with various different definitions. Genocide could be one or more leaders trying to get rid of a large group of people by killings or attacks, or it can be against a smaller group of people in a less violent manner. Genocide has been a very extreme problem in society and various reports of genocidal events have been recorded in history, but how does one go about finding the precise and accurate definition of a â€Å"genocide†? Genocidal acts are placed into different categories and are defined in different degrees. The Commission on Human Rights has set up seven treaties that describe acts of genocide. Regardless of committees’ attempts to limit or abolish acts of genocide, genocide was a very important issue especially in the twentieth century. After witnessing and learning of the devastations and atrocities, our world and nation in particular need to protect the rights each person rightfully deserves in a stricter manner to prev ent acts of this nature. In the twentieth century, we saw a more obvious rise in genocidal acts. We can blame this on the advances made with weapons. Pencil factories, for instance, were starting to produce bullets and other ammo to enhance warfare. The twentieth century was a century of vast change. The advances in aids to warfare certainly brought our nation much more power. Unfortunately, this power, if fallen into the wrong hands, could do a lot of unnecessary damage to innocent people. A leader with the intent ...

Imperialsim †proper and legitimate course Essay

Have you ever wanted something because you felt you deserved it? Throughout history people have wanted to expand and take what they wanted. It is human nature to want things and set goals to acquire those wants. Imperialism was a proper and legitimate course of action for the U.S. Imperialism is the proper thing for America to practice. Reverend Josiah Strong wrote Our Country stating, â€Å"The highest civilization will spread itself over the earth. â€Å"This means that Americas are better than all the people who we took the land of. Alfred T. Mahan wrote The Interest of America in Sea Power which says, â€Å"The growing production of the country demands it.† This means that America needs to expand to allow more people to purchase our products. President McKinley said, â€Å"we could not leave them to themselves they were unfit for self government.† This means that our way of government is so much better than theirs in our eyes that we must take over them to help them prosper. Albert Beveridge, a Republican senator from Indiana said, â€Å"Almighty God He has marked us as His chosen people.† This means that it’s our god given right to pursue more land. Henry Cabot Lodge stated â€Å"Taking Philippines does not violate the princ iples of the Declaration of Independence, but will spread them among a people who have never known liberty.† This means he want us to force freedom on the Philippines and eventually more people. Imperialism is legitimate and proper however some people disagree with this statement. Senator George F. Hoar says â€Å"under the Declaration of Independence you cannot govern a foreign territory, a foreign people, another people than your own†. This being said means that many things America has done goes against the declaration which is unjustifiable. Anti-Imperialist League said, we hold that the policy know as imperialism is hostile to liberty and tends toward militarism, an evil from which it has been out glory to be free.† This is basically saying that imperialism is evil and goes against liberty. In conclusion, Imperialism was a proper and legitimate course of action for  the U.S. Imperialism is a very controversial topic that can prove to be just or not in many ways. In the end if America did expand we would of wasted or true potential to be what we are now. If one this imperialism isn’t just how ever then why will there option matter because without land there would be overpopulation and lack of commonly used resources.