Modulation Systems Used In Satellite Communications Computer Science Essay

Modulation Systems Used In Satellite Communications Computer Science Essay Satellite is the one of the greatest means of communication carrying a large chuck of voice and data stream from one part of the horizon to the other as compared to other medium. In this modern age, communication satellite networks are an indispensable part of the major telecommunication systems. Satellite interconnects the nodes and provides some better advantages in application than the traditional communication systems such as interconnecting large traffic nodes (e.g. telephone exchanges), mobile communication and provision of end to end connections directly to users, television and sound broadcast directly to the public [1]. To provide the optimum quality of services (QoS) different types of design techniques needs to be consider for different purposes like distinct types of modulation and coding (channel and source) techniques are used for specific purpose, link budget calculations, selection of radio frequency (RF) etc. Other dominating factors are: permitted earth station size and complexity, the size and the shape of the service area etc [2]. The objective of this paper is to describe different types of modulations systems using for satellite communications. In this report, first I am trying to give some basic information related to the modulation systems and then bring all possible modulation schemes used in satellite communications. Modulation: In general view, modulation is the process where the characteristics (phase, frequency or amplitude) of the high frequency carrier are varied in accordance with the baseband signal. The baseband signal carries the basic information such as the output of video camera, voice coder or digital television. In practical point of view, it is more convenient to carry the modulation at the intermediate frequency-typically 70MHz [1]. Satellites are usually operate at Gigahertz range of frequency and the modulation signals are up-converted to the transmission frequency and amplified before going on air [1].The term modulation is also used to describe certain types of baseband processing like Pulse amplitude modulation (PAM) or Pulse Code modulation (PCM) [2]. Modulation Systems for Satellite Communications: We can divide the modulation systems in two broad categories like Analogue Modulation and Digital Modulation Analogue modulation is Amplitude Modulation, Frequency Modulation and the phase Modulation. Digital Modulation is divided into several categories and each of those uses in specific purpose. Analogue Modulation: Let consider a sinusoidal wave f(t): f(t) = A cos {2*à Ã¢â€š ¬*f c(t)+ÃŽÂ ±}..(A) Where A is the amplitude, f c is the carrier frequency and theta is the phase of the wave with respect to the information signals. When the amplitude of the carrier wave is changed, then the wave is called amplitude modulated and scheme is known as the amplitude modulation. Likewise when frequency or phase of the wave is altered then it called frequency modulated and phase modulation respectively and techniques are known as frequency and phase modulation respectively [1]. Amplitude Modulation: As mentioned above, a carrier wave is said to be amplitude modulated when the amplitude of the carrier varies with respect to the baseband signal. An amplitude modulated signal can be given as V(t)= A{1+m(t)}cos (2*à Ã¢â€š ¬*fc) (1) In equation (1), m(t) is the message signal and the fc is the carrier frequency. A{1+m(t)} is the amplitude of the carrier and it varies accordance with the signal m(t). If m(t) is the sinusoidal signal and Am and fm is the amplitude and the frequency of the m(t) respectively, then it can be written as follows V(t)= A{1+Am sin2*pi*fm}cos (2*à Ã¢â€š ¬*fc) .(2) The spectral efficiency of V(t) can be obtain by expanding equation (3) and it can be shown that there are two side bands in the spectrum like upper and lower. The upper and lower sidebands consists of same spectral shape as that of the message signal m(t) [1]. The main advantages of the AM is that amplitude modulated carrier can be easily detected by using a simple envelop detector. An envelope detector is the simple large time constant RC circuit. But the difficulty is that AM modulation is rarely use for satellite communications because [1]: An amplitude modulated signal is very susceptible to the signal fluctuation It requires very high Signal to Noise ratio for desire amount of quality. AM is used in laser inter-satellite links (ISL) in an alternate form called ON-OFF keying. There are two forms of AM systems: Double Side Band Suppressed Carrier (DSB-SC) Single Side Band Modulation (SSB) In DSB-SC the carrier frequency is suppressed and only side bands are transmitted. In this case the amplitude of the wave does not follow the amplitude of the signal and as a consequence of that it reduces the simplicity of the demodulation in FM. DSB-SC is not used in the satellite communications but this technique is good for understanding the SSB modulation [1]. SSB is another alternative form of the AM systems. This technique is suitable for the application where the bandwidth is the premium. In AM modulation, both the side bands consist of baseband information and transmission of same information twice showing the redundancy. In this case, SSB modulation, this redundancy is cut-off by removing one of the sideband so the bandwidth of the RG signal is same as the bandwidth of the baseband signal. Sometimes the carrier is also removed then it is called SSB-SC (suppressed carrier) [1]. SSB is detected at the receiver end using synchronous detector. There are two factors playing an important role to make the SSB suitable for the satellite communications: occupied bandwidth and the required carrier to noise ratio. The most common application of the SSB in the satellite communication is to multiplex voice signals into a composite baseband signal. Another form of SSB is using in the mobile satellite communication is known as the ACSSB (Amplitude C ompanded SSB) because in mobile satellite service efficiency of the bandwidth is desired. Frequency Modulation: The FM systems are widely used in satellite communications. FM system is appropriate for those cases where the baseband signals are in analogue form. In FM, frequency of the carrier signal is varied with the message signal[1]. This scheme exploits where simple receivers are essential for transmission of the digital data[4]. An example is Inmarsat Paging system because an important requirement of the paging system is the need for simple, low-cost and rugged receiver [1]. The most common methods of modulation used in the fixed-satellite service are FM for analogue signals [5]. FM has been largely used in satellite communications. It is particularly convenient when a single carrier per transponder is used and where the constant envelope of the FM signals allows the power amplifiers to operate at saturation, thus making maximum use of the available power.[5] Digital Modulation: In digital modulation techniques baseband signals can be modulated by altering the one or more of its basic parameter: amplitude, frequency and phase. According to this there are three basic modulation schemes in digital modulation like Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK) and Phase Shift Keying (PSK). There are many variations and combination of these techniques. The combination of ASK and PSK is also known as the QAM (Quadrature Amplitude Modulation).Table: 1 below showing list of some digital modulation schemes. Some of the schemes can be derived from more than one parent schemes [3]. Abbreviations Alternate Abbreviations Descriptive names FSK BFSK MFSK FSK Frequency Shift Keying (Generic name) Binary Frequency Shift Keying M-ary Frequency Shift Keying PSK BPSK QPSK OQPSK à Ã¢â€š ¬/4-QPSK MPSK PSK 4PSK SQPSK Phase Shift Keying (Generic Name) Binary Phase Shift Keying Quadrature Phase Shift Keying Offset QPSK, Staggered QPSK à Ã¢â€š ¬/4 Quadrature Phase Shift Keying M-ary Phase Shift Keying CPM SHPM MHPM LREC CPFSK MSK LRC LSRC GMSK TFM CORPSK FFSK Continuous Phase Modulation Single h (modulation index) phase modulation Multi h phase modulation Rectangular pulse of length L Continuous phase frequency shift keying Minimum phase shift keying, Fast frequency shift keying Raised cosine of pulse of length L Spectrally raised cosine pulse of length L Gaussian Minimum shift keying Tamed frequency shift keying Correlative PSK QAM ASK Quadrature amplitude modulation Amplitude shift keying QORC QOSRC SQORC Q2PSK UF-OQPSK TSI OQPSK SQAM XPSK Quadrature overlapped raised cosine modulation Quadrature overlapped square raised cosine modulation Staggered QORC Quadrature Quadrature phase shift keying Inter-symbol interference/Jitter free OQPSK Two symbol interleaved OQPSK Superposed QAM Cross-correlated QPSK Table: Digital Modulation using in satellite commiunications. As the advance in technology and limitation of analogue modulation it is now most of the satellite using digital modulation techniques and providing some advantages over analogue modulation like better performance, error detection and correction efficiency, signal to noise ratio etc. So in this paper focus are mainly given to the various types of digital modulation systems. We can divide digital modulation systems into two large categories [1]; Constant Envelop Modulation and Non- Constant Envelop Modulation and The constant envelop class is generally considered as the most suitable for the satellite communications because it minimizes the effect of non-linear amplification in the high power amplifier like TWTA (Travelling Wave Tube Amplifier) or KTA (Klystron Tube Amplifier). In this case the generic FSK is not suitable for satellite communication because it has very low bandwidth efficiency as compared to PSK systems [5].In this section of the report a brief description of different types of digital modulation systems using in satellite communication is given. PSK BPSK QPSK: In PSK system, envelop is constant but the phase changes discontinuously from symbol to symbol. There are two types of classic PSK schemes like BPSK (Binary PSK) and QPSK (Quadrature PSK). Generally, PSK modulation systems with M-ary signals can be used and its known as MPSK [5]. MPSK is more suitable than MFSK because it provides better Power Nyquest efficiency than MFSK. In mobile satellite communication, the most commonly used digital modulation system have been BPSK and different forms of QPSK. It is not surprising that higher order modulation are providing the better performance and efficient as well but they are more sensitive to the channel impairments. Recently, higher order PSK, 16-QAM is using for this purpose. [1] PSK modulation systems easily represented in the I-Q plane where I and Q axes are normal to each other. One point in I-Q plane is providing the information about the signal state [1]. PSK scheme include two basic techniques like BPSK and QPSK. In BPSK one binary code is represented by the two phases 0 and 180 where in QPSK two binary codes is represented by the four phases: 0, 90, 180 and 270. In multi level PSK, the higher the order the more requirement of power to achieve the same amount of performance [5]. PSK is using for satellite communication because PSK signal can be transmitted through the non-linear channel of a satellite and it depends on the proper choice of the modem filters [5]. Other types of modulation systems use in satellite communications are Quadrature schemes where the modulated signals are represented in terms of two channels like I and Q. Three schemes of Quadrature modulation are given below. OQPSK, offset QPSK or OKQPSK (offset keying QPSK), also known as the SQPSK (Staggered QPSK), is a modified form of QPSK. In the OQPSK, the value of Q and I channel not changing at the same instant because the value of the Q-channel baseband is delayed by the duration of one symbol. By using this property, OQPSK signals provide the reduction of the non-linear distortion when passing through non-linear element. So in this case, a better performance can be expected in the non-linear satellite channel as compared to the QPSK [7]. In OQPSK systems, maximum phase change is limited to 90. Its one of the reasons why OQPSK is advantageous for satellite channels and is used in satellite links [1]. MSK (minimum shift keying) is another coherent frequency shift keying modulation systems with modulation index 0.5. It also shows the non-linear property through a non-linear satellite channel and the signal has constant envelop.[5] MSK is spectrally more efficient than the QPSK and OQPSK because its spectrum has wider main lobe than QPSK and OQPSK [9]. QAM: It is seen that as there is a very limited bandwidth available for the satellite channels, the research for spectrally efficient modulation technique is essential for this application. Here QAM is used with the modified signal constellations for wideband satellite communication systems. [8] Because of its constant envelop to combat the non linearity of the satellite channel; M-ary phase shift keying is conventionally used in digital satellite communications systems. But when higher spectral efficiency is expected it cost more power than the other schemes. The main objective of modifying the QAM signal constellation is to reduce its sensitivity to the channel non linearity [8]. FSK: As described above, in Frequency Shift Keying systems, frequency is shifting in accordance with the message state change [1]. Binary Phase Shift Keying (BFSK) is the simplest form of the FSK allowed only two frequency states and this system can be extended to M level of frequency shifting then it is known as the M-ary FSK. In M-ary FSK N numbers of bits are combined to form a symbol. [1] M-FSK is a power efficient modulation technique which power efficiency can be increased by increasing the number of frequencies (M) at the cost of additional complexity and smaller bandwidth efficiency. This modulation system is found appropriate for some low rate and low power applications such as Global paging via satellite communications [10]. M-FSK can be used for in land mobile satellite communications where the numbers of user are stationary. It is valid for low data rate application like paging via satellites [10]. OFDM (Orthogonal Frequency Division Multiplexing) Modulation OFDM is a mature digital multi-carrier modulation technique has been used in physical layer of broadband wireless air interface standard like IEEE 802.11/Wi-Fi and 802.16/WiMax as well as digital video broadcast-Terrestrial DVB-T [11]. Simultaneously, OFDM modulation is attracting more attention for satellite communications and now it is using for DVB-TH. OFDM modulation systems also use in Military satellite communication. Coded Orthogonal Frequency division Multiplexing Modulation (C-OFDM) A COFDM modulation system is resistance to the frequency selective fading. This type of fading is seen in the wideband mobile communications. This system is useful for the digital audio and video broadcasting over a long distance. In future, C-OFDM systems would be one of the candidates for direct sound broadcast satellite systems [1]. Trellis Coded Modulation (TCM) Error correction coding and modulation are combined in Trellis coded modulation systems. To transmit information over the power-limited and band-limited channel, the modulation and the channel coding must be optimized jointly [12]. TCM with Octal Phase Modulation or 8-PSK 8-PSK is a constant amplitude modulation system with higher bandwidth efficiency. The first TCM application to satellite transmission occurred with the 8-PSK trellis codes. Using a 72 M Hz transponder bandwidth, transmission at up to 155.52 Mbits/s have been realized [5]. TCM with 8-PSK provides high bit rate which is essential in future for the high bit rate application like images, TV and HDTV services over the satellite transmission [5]. There are various forms of TCM like PTCM (pragmatic) and PPTCM (Punctured PTCM). The PTCM codes are interesting for satellite transmissions. As an example, a new coding systems using the PTCM 2/3-8PSK code concatenated with Reed -Solomon code in the INTELSAT IDR service and is expected to increase the capacity up to 25% base on the standard A earth station and INTELSAT VII space segment conditions [5]. As the demand is increasing for higher bandwidth efficiency, the QAM trellis codes could find the potential applications in HDTV satellite transmissions in the future. But the main limitation of trellis codes applying in the QAM using in the satellite communications is their non-constant amplitude and more distortion occur when pass through the NLA (Non-linear amplifier) [13]. A precise amplitude control must be used in the receiver end [5]. Trellis coded 16-PSK and 16-QAM modulation systems are used for satellite communications. But the fact is that when the modulation level increases, the constant envelop M-ary PSK modulation systems are inferior to the QAM systems. On the other hand, QAM suffers more distortion in the non-linear satellite communications channels [14]. QAM is suitable for geostationary orbit satellite channel with only Gaussian impairments because of being amplitude and phase modulated signal, QAM is more sensitive to the effects of interference and fading than MPSK [15]. Single Channel Per Carrier FM Modulation with syllabic Companding (SCPC FM) The main advantage of using SCPC FM modulation with syllabic Companding in satellite communication is to increase the limited capacity and this capacity increment is fully depends on the syllabic companding. The compadors in the transmission side take a wide volume of speech signals and reduce by the compressor with small amount of deviations. As a consequence of that in the same bandwidth it would be possible to employee more channels for transmission. And at the receiver end , the expender returns the original voice signals and during the speech pauses suppress the noise link[16]. This bandwidth efficiency can also be applied to the domestic satellite systems where the use of a small earth station and a large number of routes operating with few channels are important [16]. In future for the larger satellite (IntelSat IVA or V), the inefficient use of bandwidth of satellite channel by small carriers, especially in the transponder one of the factors which limits the total achievable capacity of bandwidth. In this case, the use of a SCPC companded FM would significantly increase the total capacity of the satellite bandwidth without increasing the total segment cost of the earth stations like other modulation systems [16]. From research it can be shown that the use of SCPC FM with compandors will significantly improve the economic scenario associated with the small earth stations. Wavelet Packet Modulation (WPM): WPM is a multicarrier modulation system like OFDM using Discrete Wavelet Transform (DWT). DWT is a transformation technique which is a presentation of the composite signal in time and frequency domain. So in WPM, packets structure is divided into time and frequency domain. So when any interference is realize, in TDMA or FDMA system all packets are degraded but in case of WPM, packets are keep away from the interference with the help of providing the appropriate packet structure [17]. Both WPM and OFDM are multicarrier modulation system but the difference is OFDM uses FFT to combine the transmission where WPM use DWT and Bit Error Rate (BER) of WPM is much better than the OFDM. Similarity between these modulation systems is High Peak to Average Power Ratio (PAPR). For improving the performance of OFDM, single carrier OFDM (SC-OFDM) is proposed where decreasing PARP was the main goal. It is seen that the PARP is also high in WPM so SC-OFDM can be used to improve efficiency of the WPM. SC-WPM also can be used by exploiting the principal of SC-OFDM [17]. Some experiment shows that the WPM is the effective modulation systems for satellite communications and with lower PARP, SC-WPM would enable the broadband satellite communications [17]. PARP performance of SC-WPM is superior to WPM and OFDM. The BER performance of the WPM is better than OFDM. Multi-Level Gaussian Frequency Shift Keying (MGFSK) MGFSK is a modulation systems use in the satellite communications. It also exploiting the technique of narrow band FM which has constant envelop throughout the signal. MGFSK is suitable for satellite communications where the transponders are in saturations and it is also useful for the transmitter where output amplifier is also saturated [18]. As compared to the 8PSK bandwidth efficiency (3 bit/s/Hz), MGFSK providing bandwidth efficiency is 6 bit/s/Hz [18]. BW efficiency of MGFSK is very similar to the 64 QAM but 64 QAM is not feasible to use in satellite communication because it requires highly linear and well-equalised satellite channels [18]. The key applications of MGFSK are in those satellites which trucking of ISP backbone traffic, satellite news gathering and military satellite applications. Pulse Code Modulation (PCM) Pulse code modulation system is another technique which is employed in the satellite communications. Here in PCM the main aim is to coding the analogue signal for digital representation and then transmitter by using digital techniques. In PCM, analogue signals are sampled in a periodic manner of time in a rate of Nyquest Sampling rate (twice the highest of baseband frequency) and then quantized in agreed manner. To keep the error in certain level, quantization step should keep as low as possible. [5] Different types of pulse code modulation are seen like DPCM and ADPCM. Other Modulation Systems use in Satellite Communications Delta modulation (AM), Pulse amplitude modulation (PAM), Pulse Time Modulation (PTM) etc. Spread Spectrum modulation systems are closely related to the PCM [1]. Conclusion: In this report it has been trying to make an overview of the modulation system used in the satellite communication channels. A different type of modulation systems has been described. The selection of modulation systems is depends on the various factors like type of the channels, constraints imposed by the earth stations (for fixed satellite, direct broadcast services and mobile satellite services), hardware limitations etc [1]. One fundamental characteristic of the satellite communications channels is the trade-off between the bandwidth and the power to obtain the received signal with certain level of quality. In case of the bandwidth limited channels, spectrally efficient modulation systems are used where penalty is paying for additional carrier power. In the power limited links, bandwidth efficient modulation is using which related to the hardware constraints as well. References: [1]. Raicharia, M.,[ 1995] Satellite Communication Systems: Design Principles, 2nd Edition, 1999, ISBN:0-333-74722-4, Macmillan Press Ltd,Baisingstoke, RG21 6XS. [2]. Couch, L W., Digital and Analogue Communication Systems, 5th Edition. 1997, Prantice Hall, Upperside river, NJ-07458, ISBN: 0-13-522583-3. [3] . Fuqin, Xiong., [August, 1994] Modem techniques in satellite communications, IEEE Communications Magazine, p. 84-98. [4]. Fthenakis, E., Manual of the Satellite Communications, McGraw-Hill Inc, 1984. [5]. Handbook of the Satellite Communications (HSC), 3rd Edition, pp: 242-275, http://www.scribd.com/doc/7047432/Handbook-on-Satellite-Communications, Last Visited 25.03.10 [6]. Taggart, D., Kumar, R., Cooper, L. , Wagner, N., Goo, G., Affects of Tone interference on the performance of QPSK and 8-PSK modulation in satellite communications, 2004, Arospace Conference, 2004. Proceedings. 2004. IEEE. [7]. Juing, Fang., [March, 1996] The other digital modulation techniques. ITU-R, Doc. 4HB/14, 25-28 March 1996. [8]. Kim, J., Liu, J,. Kwatra, S.C., Quadrature Amplitude Modulation Schemes with Modified Signal Constellations for a Wideband Satellite Communications, Military Communication Conference, 1995. MILCOM, 95. Conference Record, IEEE. [9]. Pasupathy, S. Mimimun Shift Keying : A Spactrally efficient Modulation, IEEE Communication Magazine, 1994, Vol 17, Issue:4, pp:16-22. [10]. Khalona, R.A., performance of a M-ary fsk modulation in a land mobine satellite communcaitin channel, Universatl personal Commuinication, 1994, pp: 430-434. [11]. Ludong, W; Jezek, B., ofdm modulation tecnnique for military satellite communciations, Military Communications Conference, 2008. MILCOM 2008. IEEE , 2008, pp: 1-7. [12]. Ungerboeck, G., [January, 1982] Channel coding with multilevel/phase signals, IEEE Trans. on IT-28. [13]. [Flash-TV] Flash-TV: Flexible and Advanced Satellite Systems for High Quality Television, with Interconnection with IBCNs, Race-II Project R2064. [14]. Benedetto, S.; Pent, M.; Zhang, Z., trellis coded 16-psk and 16-qam modualtion for satellite communicaiotns, Global Telecommunications Conference, 1988, and Exhibition. Communications for the Information Age. Conference Record, GLOBECOM 88., IEEE , 1988, Vol: 1, pp: 125-130. [15].Evans, B.G., Satellite Communication Systems, 3rd Edition, 2008, ISBN: 0-85296-899, Lightning Source UK Ltd. Milton Keynes. [16]. Evans ,B.G., Kernot ,R.J., Satellite-communication system employing single -channel /carrier frequency modulation with syllabic companding, IEE,1975, Vol: 122, Issue: 7, pp: 703-709. [17]. Sakakibara, H.; Okamoto, E.; Iwanami, Y., A Wavelet Packet Modulation Method for Satellite Communications, TENCON 2005, IEEE region 10, 2005, pp:1-5. [18]. Fitch, M., Boyd, I., Briggs, K., Steitiford, K., Gaussian multi-level FM for high-bandwidth satellite communications, University college of London (UCL), http://keithbriggs.info/documents/MGFSK_paper1_IB2_mrf-feb27.pdf, last visited: 27.03.10.

Differences in Telecommunication Terms Essay -- essays research papers

This paper will attempt to define and contrast the following terms: a.  Ã‚  Ã‚  Ã‚  Ã‚  Synchronous and asynchronous b.  Ã‚  Ã‚  Ã‚  Ã‚  Analog and digital c.  Ã‚  Ã‚  Ã‚  Ã‚  XON and XOFF d.  Ã‚  Ã‚  Ã‚  Ã‚  Simplex and duplex e.  Ã‚  Ã‚  Ã‚  Ã‚  Serial and parallel transmission f.  Ã‚  Ã‚  Ã‚  Ã‚  Baseband and broadband g.  Ã‚  Ã‚  Ã‚  Ã‚  Serial Line Internet Protocol (SLIP) and Point-to-Point Protocol (PPP) h.  Ã‚  Ã‚  Ã‚  Ã‚  Hypertext Transfer Protocol (HTTP) and File Transfer Protocol (FTP) i.  Ã‚  Ã‚  Ã‚  Ã‚  Transmission Control Protocol (TCP) and Internet Protocol (IP) It will also contain a brief description and analysis of the OSI layers that are used with the TCP/IP protocol stack. Synchronous and Asynchronous In referring to the signal that passes through telephone lines, the transfer methods may be either synchronous or asynchronous. A synchronous data transfer is sent in a continuous, single stream of characters, grouped into buffered bits. Before the transmission is sent, synchronous characters are sent that set the sending and the receiving ends to the same time. Once affirmation of the syn pulse is returned, the stream is sent to the receiving end. An asynchronous data transfer consists of start and stop bits at the beginning and the end of the pulses that are sent. (Modem, 2004) Analog and digital An analog signal is an exact replica of the sound or picture being transmitted. An analog wave signal is a signal that consists of changing amplitudes of frequencies. An analog transmission is used over telephone lines to transmit voice frequencies over a carrier frequency through the telephone line. An electric current reproduces the frequency for transmission, then it is converted at the other end back into the sound wave. A digital signal is a square wave signal consisting of a voltage and then a lack of voltage. Digital transmission involves laser lights that flash on and off and are carried through fiber optic lines. This is a very fast transmission rate (approximately 450 flashes per second) and can result in two fiber optic transmission lines to be able to transmit almost 15,000 conversations at the same time. Digital transmission is faster than analog, and also is more stable, as less noise or other interference can disrupt ... ...es not really say such about what happen here, except to point out that the host has connect to the network using some protocol so it can transmit IP packets over it. This protocol is not specified and varies from host to host and network to network. From: http://www.buzzle.com/editorials/text8-24-2004-58325.asp References ComputerHope. Retrieved November 20, 2004 from: http://www.computerhope.com/jargon/x/xonxoff.htm Ckslsc. Retrieved November 20 , 2004 from:http://www.csklsc.net/wong-sir/data_communications/baseband_broadband.htm Eserver. Retrieved November 20, 2004 from: http://eserver.bell.ac.uk/mirrors/dc100www/dc_014.htm Freedictionary. Retrieved November 20, 2004 from: http://encyclopedia.thefreedictionary.com/serial%20transmission Intersil. Retrieved November 20, 2004 from: www.intersil.com/design/commlink/glossary/index.asp Modem. Retrieved November 20, 2004 from http://www.modem.com/glossary/glos15.html Searchwebservices. Retrieved November 20, 2004 from: http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci214211,00.html Thinkquest. Retrieved November 20, 2004 from http://library.thinkquest.org/27887/gather/fundamentals/analog_and_digital.shtml Differences in Telecommunication Terms Essay -- essays research papers This paper will attempt to define and contrast the following terms: a.  Ã‚  Ã‚  Ã‚  Ã‚  Synchronous and asynchronous b.  Ã‚  Ã‚  Ã‚  Ã‚  Analog and digital c.  Ã‚  Ã‚  Ã‚  Ã‚  XON and XOFF d.  Ã‚  Ã‚  Ã‚  Ã‚  Simplex and duplex e.  Ã‚  Ã‚  Ã‚  Ã‚  Serial and parallel transmission f.  Ã‚  Ã‚  Ã‚  Ã‚  Baseband and broadband g.  Ã‚  Ã‚  Ã‚  Ã‚  Serial Line Internet Protocol (SLIP) and Point-to-Point Protocol (PPP) h.  Ã‚  Ã‚  Ã‚  Ã‚  Hypertext Transfer Protocol (HTTP) and File Transfer Protocol (FTP) i.  Ã‚  Ã‚  Ã‚  Ã‚  Transmission Control Protocol (TCP) and Internet Protocol (IP) It will also contain a brief description and analysis of the OSI layers that are used with the TCP/IP protocol stack. Synchronous and Asynchronous In referring to the signal that passes through telephone lines, the transfer methods may be either synchronous or asynchronous. A synchronous data transfer is sent in a continuous, single stream of characters, grouped into buffered bits. Before the transmission is sent, synchronous characters are sent that set the sending and the receiving ends to the same time. Once affirmation of the syn pulse is returned, the stream is sent to the receiving end. An asynchronous data transfer consists of start and stop bits at the beginning and the end of the pulses that are sent. (Modem, 2004) Analog and digital An analog signal is an exact replica of the sound or picture being transmitted. An analog wave signal is a signal that consists of changing amplitudes of frequencies. An analog transmission is used over telephone lines to transmit voice frequencies over a carrier frequency through the telephone line. An electric current reproduces the frequency for transmission, then it is converted at the other end back into the sound wave. A digital signal is a square wave signal consisting of a voltage and then a lack of voltage. Digital transmission involves laser lights that flash on and off and are carried through fiber optic lines. This is a very fast transmission rate (approximately 450 flashes per second) and can result in two fiber optic transmission lines to be able to transmit almost 15,000 conversations at the same time. Digital transmission is faster than analog, and also is more stable, as less noise or other interference can disrupt ... ...es not really say such about what happen here, except to point out that the host has connect to the network using some protocol so it can transmit IP packets over it. This protocol is not specified and varies from host to host and network to network. From: http://www.buzzle.com/editorials/text8-24-2004-58325.asp References ComputerHope. Retrieved November 20, 2004 from: http://www.computerhope.com/jargon/x/xonxoff.htm Ckslsc. Retrieved November 20 , 2004 from:http://www.csklsc.net/wong-sir/data_communications/baseband_broadband.htm Eserver. Retrieved November 20, 2004 from: http://eserver.bell.ac.uk/mirrors/dc100www/dc_014.htm Freedictionary. Retrieved November 20, 2004 from: http://encyclopedia.thefreedictionary.com/serial%20transmission Intersil. Retrieved November 20, 2004 from: www.intersil.com/design/commlink/glossary/index.asp Modem. Retrieved November 20, 2004 from http://www.modem.com/glossary/glos15.html Searchwebservices. Retrieved November 20, 2004 from: http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci214211,00.html Thinkquest. Retrieved November 20, 2004 from http://library.thinkquest.org/27887/gather/fundamentals/analog_and_digital.shtml

I Didnt Choose Home Schooling :: Personal Narrative, education

I Didn't Choose Home Schooling I didn't choose to be taught at home; my parents decided for me. I was four, and my toddler priorities lay elsewhere. Little did I know that I was volunteering for an educational experiment. Every September my parents and I had our annual discussion about continuing home schooling versus sending me to "regular" school. I don't know if I thought school would be a bit boring or if I was afraid of change, but I always chose to stay home. I did go to school for a few classes and for violin lessons, but much of my time there was spent explaining my sporadic attendance to teachers and classmates. I grew accustomed to giving both rote and wry answers to questions like, "Do you watch TV all day?" The rote answer was "No, of course not. I do the same things you do in school." The wry answer was "Yes, from nine to noon," watching their faces form into expressions of disbelief. I didn't tell them I was watching Massachusetts Educational Television on PBS. When discussing home schooling with strangers or skeptical parents, the first question usually concerns "socialization", often posed bluntly as "Do you have any friends?" Sports and orchestra brought me into contact with kids my age, but even then it was a common interest rather than a common age that drew us together. Over the years, I found wonderful friends in Mendelssohn, O. Henry, a German woman on my paper route who was a World War II refugee, Newsweek, a paralyzed basketball coach who couldn't walk but still coached me as if he could, history books, and a range of musical instruments from viola to tinwhistle. People are always relieved to discover that I'm not a hermit. Home schooling gave me the freedom to explore and experiment. We Traded houses with an Irish family and lived in Galway for a month. I was never given actual lessons on "how to write a sentence"; I learned as I wrote history essays. Few schools would have allowed me to research the sinking of the Titanic, but my parents let me read about it, build models of it and learn about watertight bulkheads. (I even managed to finish my math book that year, too.) As I got older, people started to ask if being taught at home was going to hinder me in college.

Examining the Conflict of Good versus Evil in Young Goodman Brown Essay

Nathaniel Hawthorne’s short story entitled Young Goodman Brown is about a man who takes his journey to the forest to attend a special congregation—without knowing its real purpose in his life. Goodman Brown, the narrative’s protagonist believes that his faith is constant, true, and immovable, but as he takes his journey to the forest, readers realize that the main character’s faith is depthless. He creates evil thoughts throughout his journey, which makes his faith weaker, especially when he encounters the prayerful and vigilant people of his community during his walk. As he steps into the forest to attend the congregation, the evil starts to shake his faith and begins to disrupt his beliefs. The conflict of good versus evil is depicted through Goodman Brown’s unstable mind, inconsistent faith, and distrust to the people around him. This conflict changes Goodman Brown’s idea of trust and faith, as well as his way of life and relationship to others, especially his wife. The conflict of good versus evil emerges through Goodman Brown’s unstable mind, but his wife, Faith, is trying to keep his belief. When Young Goodman Brown is about to leave, his wife said: â€Å"Then God bless you! And may you find all well when you come back† (Hawthorne 190). Goodman Brown’s journey is for the benefit of evil—though he insists that it is for him and Faith, but his wife is trying to restrict him to continue his travel. However, even if Goodman Brown is blessed by his wife in his journey, he is aware of the evil’s existence and its power to hide and seek in the forest. While walking, he said: â€Å"There may be a devilish Indian behind every tree. What if the devil himself should be at my very elbow!† (191). The devilish Indians are symbolisms of evil in this novel—and due to his unstable mind, Goodman Brown is prone to evil thoughts. Even if he has faith and belief in his religion, Goodman Brown cannot stop himself from thinking about negative thoughts because the evil is leading him to the devil’s congregation. Therefore, Goodman Brown’s unstable mind serves as the evil’s instrument to disrupt his faith. Conflict between good and evil exists when Goodman Brown begins his distrust to his community. As he thinks about the devil and his wife, Goodman Brown asked the traveler: â€Å"Friend, my mind is made up. Not another step will I budge on this errand. What if a wretched old woman do choose to go to the devil when I thought she was going to heaven: is that any reason why I should quit my dear Faith and go after her?† (195) As Goodman Brown walks into the forest, he encounters different people taking their journey to the congregation—they are the prayerful and religious ones in the community. As he sees them, he begins to distrust them, which makes him think of going back to his wife. Goodman Brown does not know how to identify the difference between good and evil in the middle of his journey, so when he sees Faith into the congregation, he said: â€Å"My Faith is gone! There is no good on earth; and sin is but a name. Come, devil; for to thee is this world given† (197). Faith is not only the protagonist’s wife, but also a symbolism of his belief in his religion. When he says his Faith is gone, it means that his faith to his community disappears because he believes that these people lives with the devil and not with their God. Goodman Brown fails to trust the people around him and think that they are evil because deep inside him, he is defending himself from being part of the devil. Goodman Brown experiences conflict of good versus evil due to his inconsistent faith. The forest is a symbolism of evil because there is â€Å"no church had ever been gathered or solitary Christian prayed† (196)—and Goodman Brown takes this path as a sign of his union with the devil. Despite of his wife’s disapproval, the protagonist continues his journey, which proves his inconsistent faith to his religion. When he is about to see the congregation and feel the evil spirit within his midst, the protagonist realizes that his faith is gone with him. As he tries to restore his faith, Goodman Brown shouted: â€Å"With heaven above and Faith below, I will yet stand firm against the devil!† (196). The protagonist is trying to use his faith to keep him away from harm, but his soul is offered to the evil. Seeing his community being part of the congregation is a justification of his inconsistent faith because he does not trust anyone around him, even his faith that should only be his source of strength. As he demonstrates his inconsistent faith, his evil attacks his body, mind, and soul. Goodman Brown is a good man, but he fails to bring his faith in his journey to the forest. The conflict of good versus evil emerges when he decides to leave Faith and takes his journey alone. He leaves his faith in his house and thinks that he can overcome any obstacle in his path, but he is unsuccessful because unstable mind, inconsistent faith, and distrust to the people around him become the instrument of evil to own his mind, body, and soul. As a result, Goodman Brown’s mind, body, and soul are eaten by the devil—and no matter how he tries to keep his faith; he cannot restore his belief because the evil lies within his wholeness.

Goal Setting for Academic Success

November 2010 Goal Setting for Academic Success Goals are like road maps; they get a person from one point to another. Goals provide the direction one needs to reach a destination. The best way to get results is to plan for the future, but live one day at a time. Think about the future; how does one define success? What makes one happy? What drives a person? What makes a person get out of bed in the morning? Does success mean family, money, security, helping others, improving the environment, solving problems, a career, or a degree?Whatever a student decides, the key to academic success is to strengthen one’s will to succeed and to do this one must set academic goals. The first step in setting an academic goal is to define an attainable, relevant goal. A student must ask himself about his own core values, what motivates the student, where does the student want to be tomorrow, next week or even a few years? What does the student want to do? Be very specific with academic plans. If a student’s desires are specific, goals will be specific. Never ask the questions, â€Å"What if†, or â€Å"What would happen if†.Make the questions a positive affirmation of what the student will do. While developing a relevant goal, make sure to also ask if what is desired is attainable. After some thought write out a clear description of a goal (Carter et al. 100). The second step in academic goal setting is to defining a specific path. The student must think about what the most important goal is, and what is the first thing to do to start towards that goal? Then plan backwards in time and outline. Start by creating a rough outline or some type of map that includes specific steps in regard to the academic goal.The beginning of the student’s road map is this map being personalized just for the student. Outline specifically the steps towards goals, keeping in mind behaviors and life events that are under one’s control. In this outline define a specific educational path; most importantly begin creating new rules for life especially giving thought to what one will do with events and behaviors that cannot be controlled (Carter et al. 100). Once the student has the big picture in mind, the third step in goal setting is setting a time table.Ask when do you want to have a goal complete, being realistic in regard to the goal and the time that will be involved to accomplish it. Think about deadlines for the steps defined in the plan of action. Finally, begin keeping track of progress perhaps by blogging or writing in a notebook to keep track of progress towards reaching the goal. Think of short -term goals towards academic achievement ranging from daily to weekly, even monthly or as far up to one-year. Long term goals can be set up to take 5 years to accomplish.Make sure to set deadlines for each step in a plan and keep track of those (Carter et al. 100). The fourth step in academic goal setting is for the student to measure the m self. The student should be learning more at this point and what makes them tick. The student needs to keep a written record of progress and set backs as well as finding a confidant to talk to; someone the student can count on to help keep them on track (Carter et al. 100). The fifth and one of the most important steps is not getting â€Å"stuck† If a bump in the road to academic goals get in the way, the student shouldn’t panic!The student needs to be aware that staying on track with a specific academic or any other personal goal can be rocky and may place un needed stress on them. The student should try to anticipate problems and think of ways to make changes to the plan of action if they run into trouble. If the student gets stuck, now is the time to reach out to family, trusted friends, school counselors and maybe even instructors for support. Plans aren’t always etched in stone and it’s important that the student understands that plans can be alter ed, they should never give up (Carter et al. 00). Step six in achieving an academic goal is the most exciting part; putting the student’s goal achievement plan into action, following the steps and trying not to sway from them. By conditioning, the student will be able to follow this map created as if life depends on it because in a way it does. This is the student’s future and they should take it very seriously (Carter et al. 100). Putting academic strategies into action is to achieve a desired goal. Prepare daily, weekly, monthly, and yearly; action plans are your set of directions to achieve academic goals.Things to remember to include in a plan of action is time management, which would include how much time is spent studying everyday; where the student will study, who the student will study with, and how the student will avoid distractions. Keeping assignments and important dates organized in a planner is very important. The student will then be able to refer to it on a daily. A student must also take into consideration negativity and how to avoid it, assuring that the short term goals are being met successfully.The student should be encouraged even if they don’t succeed at first to try again. The student may struggle at first deciding and committing to academic goals, but that doesn’t mean they can’t go back and revise academic plans. It’s important to note that in the beginning of the post secondary experience; academically the student should start out simple but be concise. If the student is undecided on a major but still has to find classes to take, conquering the general education courses that the student will need to get into a major and attain a degree is a great way to start short term goals.Some people might even benefit from this course of action because if they are dedicated to goals they have set, it will increase success skills in college once the student has reached the level to get into a degree progr am. This makes things seem a little easier later in the college years because the student has learned have how to manage time, and how to study and get the grades needed to succeed. A student always needs to remember the sky is the limit but it’s up to the student how they are going to get there or how you will not.Goal setting emerged as a theory in psychology over the course of the last 35 years (Morisano et al. 255). Goal setting will recognize both a student’s conscious and unconscious mind and what the student wishes to achieve. Goal Setting has the power to change a student’s life. While setting an academic goal in the proper way a student will achieve it. So the key with goal setting is to ensure that the right goal is set, and then begin working towards it, most importantly in the right order. Goals can be supportive to a student’s self, academics, family and community. Goal Setting is a tool hat if used correctly can change the quality of oneâ₠¬â„¢s life. It is beneficial in academics, personal, health, and business life. â€Å"Setting goals can improve performance and ability at any given task. Students with clear goals appear more able to direct attention and effort toward goal relevant activities and away from those that are not† (Morisano et al. 177). The authors go on to say that goal setting is healthy in establishing clear goals increasing self regulating skills, increasing enthusiasm, increased energy, persistence and less susceptible to anxiety, disappointment and frustration.Further more the article goes on to say that well defined goals appear to help students discover efficient strategies and modes of thought and perception. Even when a student doesn’t realize a goal is in place it probably is for example the night before class one might be organizing books, materials, setting alarms to get up for class the next day not even realizing that these small goals achieved are to reach to the larger goa l of getting to school prepared and on time.Not every student finds it easy to know what goals to set academically Goals which measure academic success might include: an increase in grade point average, improvement in note taking effectiveness, or increased usage of an effective study system. Improvement in any area requires clear behavioral goals, clear outcomes and measurable ways to monitor the student’s goal-oriented behavior. Goals need to well-defined so that they are stated as an outcome, specified as actions, and numerically measurable. A student needs to be able to define goals using each of these three criteria.The improvement in goals is influenced by the clarity of goal statements (Carter et al. 94-119). The Steps to Achieving Great Goals are appreciating the value of a goal, deciding on the goal a student wishes to set, ensuring they are excited by the goal and documenting their goal as they forge through it towards achievement. â€Å"The process of writing abou t a goal for example keeping a journal detailing the academic goal, the ups and downs related to reaching it, how the student feels about it does appear to have some elements of magic about it† (Lemos 480).Lemos goes on to say that this is because the process of documenting a goal does a number of very positive things for students. Writing about a goal ensures focus on exactly what the goal is, not just a general feeling of what it is. Having a documented goal is a permanent record of the goal so that the student is consistently pursing the one goal, the student has a future record against which to measure progress, and the process of converting a goal from thought to words engages more of the brain and clarifies the instructions given to your unconscious mind.While setting academic goals in order to successfully achieve them, the student must ensure the goal is well formed as to identify the evidence that enables them to know when they have achieved it, most importantly ident ifying the student’s first step, ensure that achieving your goal fits into their life and the cost of the goal is not greater than the benefit that they will achieve. Finally a student wants to identify and remove any and all blockages, finally visualizing skills, talents and interests. For weekly goals, a student shouldn’t choose something that is uncharacteristically demanding for them.A student can always do more than the stated goal so build on success by choosing something realistic (Lemos 480). Characteristics of a reachable goal are both believable and possible. The student is the key person here so they shouldn’t set a goal that they don't believe in. The student needs to make sure that they believe they can do it and that it is possible to do in the time they have set aside. A reachable goal is measurable. If a student’s long term goal is to be successful, the will be more likely to reach that goal if they say it in concrete and specific terms.Fo r instance, they might say that they want to be earning $30,000 a year by the time you are 25. For a weekly goal, move beyond statements like I want to do better in all my classes. Instead, the student should promise them self that they will read two chapters of history by Saturday. A reachable goal is flexible. Sometimes our plans change; sometimes we get sick. The student needs to be prepared to reassess and revise goals if necessary. If the are too sick to study, they may have to revise a goal into reading two chapters of history by extending the time to Monday. A reachable goal is controllable.The student should make sure they are in charge of the goal. If friends suggest that the best way to pass a class is to study old tests but the student knows that they’re learning style demands chapter outlines to get the material down, the student should stick with what works for them. The student is in control (Konar 1). A student may want help with academic goal achievement. Mayb e the student is not sure how to get started with goal setting or they are not sure what goals to set. The student may already have goals in mind and would like confirmation of the steps needed to achieve them. It could be hat they have got a goal setting program under control and may need a little bit of extra motivation or knowledge to keep them on track. This is the student’s chance to meet an adviser or counsellors as well as possibly a success coach who will keep the student headed in the right direction with information, encouragement and support (Carter 94-119). In conclusion goal setting produces improvements in academic success especially among struggling college students. â€Å"Goal setting interventions can potentially help students establish not only goals but increase academic progress† (Lemos 482).Goal setting strategies are encouraged for students on academic probation. Learning to set and maintain plans towards long term goals in school also extend into other areas of their lives, helping to improve themselves in other areas of life as well. Setting an important academic means everything to most students. The student should write a letter of intent, date it, and sign it. Next, the student should place this letter some where that they will see it everyday. The student should go to a friend or fellow student and make a commitment to promote and support one another; it helps to be accountable to someone else. If a student develops dreams into goals, and goals into realities, then realities will become successes.Works Cited â€Å"Academic Success Center. † Academic Goal Setting. Iowa State University, 2010. Web. 1 Nov 2010. Carter, Carol,. Joyce Bishop,. Sarah Lyman Kravits. â€Å"Setting and Reaching Goals: Using Values, Stress Management, and Teamwork. † How Do Set and Achieve Goals?. Edited. Sande Johnson. Boston: Pearson Education Inc, 2009. Print. Kato, Fumie. â€Å"Student preferences: Goal Setting and self assess ment activities in a tertiary education environment. Language Teaching Research. 13. 2 (2009): 177-179. Print. Konar, Carol. â€Å"Goal Setting. † Academic Success Center. Oregon State University, 2010. Web. 16 Nov 2010. Lemos, Marina S. â€Å"Student's goals and self regulation in the classroom. † International Journal of Educational Research. 31. (1999): 471-485. Print. Morisano, Dominique, Jacob B. Hirsh, Jordan B. Peterson, Robert O. Phil, and Bruce M. Shore. â€Å"Setting, Elaborating, and Reflecting on Personal Goals Improves Academic Performance. † Journal of Applied Psychology. 95. 2 (2010): 255-266. Print.

Mode of Entry in India by Foreign Investors

foreign capital implies funds that are raised from foreign investors for investment purposes in development projects of a host country. Any investment flowing from one country to another country is foreign investment. This concept came in 1950s when many capital deficient countries resorted to foreign capital as a primary means to achieve rapid economic growth. Foreign capital can enter the country in the form of: 1. Direct Investment 2. Indirect Investment Also, with time the concept of foreign aid came up. It is nothing but movement of money from one country to another in the form of aid for development.It flows to developing countries in the form of loans, assistance and outright grants from various governmental and international organizations ADVANTAGES OF FOREIGN CAPITAL 1. It raises the level of investment – Brings in more industries and technology to the country and gives boost to the employment, production and economy of the host country. 2. Helps in upgradation of tec hnology – Foreign investment brings with it the technological knowledge while transferring machinery and equipment to developing countries. 3.Exploitation of natural resources – A number of underdeveloped countries process huge mineral resources, which awaits exploitation. These countries themselves do not possess the required technical skill and expertise to accomplish this task. 4. Development of basic economic infrastructure – Underdeveloped or developing countries require a huge capital investment for development of basic economic structure as their domestic capital is often too adequate. 5. Improves export competitiveness – A foreign investment can help the host country to improve its export performance.This is because of increase in the level of efficiency and the standard of product quality. Also, better access to foreign market further improves the export competitiveness. 6. Benefits the consumers with competitive market – Consumers in deve loping countries stand to gain from a foreign investment through new products and improved quality of goods at competitive prices. 7. Generates revenue to the government – The profit generation by a foreign investment in the host country contributes to the corporate tax revenue in the latter. 8.Supplements domestic savings – Less developed countries lack sufficient savings, required for investment in development projects like building economic and social infrastructure. Foreign capital bridges this gap. 9. Employment increases in the host country – As foreign companies come up, they establish their plant in the host country. As a result, employment also increases. DISADVANTAGES OF FOREIGN CAPITAL 1. Countries face severe debt problems – If all the investors who have invested in the host country, pull out their money overnight then the host country comes in debt. 2.Appreciation of real exchange rate occurs – As more foreign investors invest in the c ountry, the demand for the domestic currency rises. This causes appreciation of domestic currency and hence loss of competitiveness of exports as they become costlier. 3. Chances of inflation – Domestic supply of money increases and if this money is not utilized and absorbed in profitable projects then there is an inclination towards inflation. 4. The economy becomes overvalued – As the investors come in, the money in the economy starts flowing causing unnecessary appreciation in foreign currency. 5.Domestic market is affected – When foreign investments compete with the home investments, the profits in the domestic industries fall, thereby leading to a fall in domestic savings. 6. There is less contribution to public revenue – As the corporate taxes are comparatively less because of liberal tax concessions, investment allowances, designed public subsidies and tariff protection that are provided by the host government. ————†”———————————- TYPES OF FOREIGN CAPITAL There are five major types of foreign capital. They are – 1. Foreign Direct  Investment (FDI)It is a process whereby residents of the source country acquires the ownership of assets for the purpose of controlling the production, distribution and other activities of a firm in the host country. The foreign investors are free to invest in India, except few sectors/activities, where prior approval from the Reserve Bank of India (‘RBI’) or Foreign Investment Promotion Board (‘FIPB’) would be required. The followings activities/sectors requires prior approval of FIPB. a. Manufacture of Cigars & Cigarettes of tobacco and manufactured tobacco substitutes b.Manufacture of Electronic aerospace and defence equipments c. Manufacture of items exclusively reserved for Small Scale Sector with more than 24% FDI d. Proposals in which the foreign col laborator has an existing financial / technical collaboration in India in the ‘same’ field e. All proposals falling outside notified sectoral policy. The foreign investors planning to set of business in India have two options, either to set up a separate corporate entity in India, i. e. incorporating an Indian company or through unincorporated entity, i. e. Branch Office of the foreign entity.Incorporation of an Indian company can be possible under the provisions of the Companies Act, 1956. The foreign investors can invest in such Indian company up to 100% of capital depending upon sectoral guidelines prescribed by the Government of India. Under Second Option, a foreign company are allowed to operate in India, subject to conditions and activities permitted under the Foreign Exchange Management (Establishment in India of Branch Office of other place of business) Regulations, 2000, through setting up either of the followings: Liaison Office/Representative Office; Project Office; or Branch Office.While making entry into any nation, innumerable clearances are to be obtained at the state and district levels. Also, a number of practical hurdles, such as infrastructure bottlenecks have to be overcome. Also, the exit is difficult, in the sense that, archaic labour laws, such as the Industrial Disputes Act, prohibit the closure of any company. ADVANTAGES OF FDI Below mentioned are some of the advantages of FDI. They are very similar to that of foreign capital. 1. Growth and employment 2. Technology and know how 3. Access to goods and services 4. Fill the savings gap DISADVANTAGES OF FDI . Political lobbying – In the past, there have been many instances in which MNCs have resorted to political lobbying in order to get certain policies and laws implemented in their favor. 2. Exploitation of resources – Exploitation of natural resources of a host country is not a very uncommon phenomenon in the case of FDI. MNCs of other countries have been know n to indiscriminately exploit the resources of host countries in order to get short run gains and profits and have even chosen to ignore the sustainability factors associated with the local communities and local habitat. . Threaten small scale industries – MNCs have large economic and pricing power due to their large sizes. They do not have much problem with regards to financial capital and can hence resort to using advertising which is a costly affair. Also, these companies are global players who have their operations spread across countries and have effective supply chains which enable them to have economies of scale which smaller players in the domestic market of the host country cannot compete with.All this results in the MNC having cheaper products and more visibility due to the higher amounts of advertising and have been known to push out smaller industries out of business. 4. Technology – Although, the MNCs have access to new and cutting edge technology, they do not transfer the latest technology to the host country with a fear that their home country may loose its competitive advantage. 2. Foreign Portfolio Investment (FPI) FPI is buying and selling of shares, convertible debentures of Indian companies and units of domestic mutual funds at any of the Indian stock exchanges.FPI are done by foreign investors in shares, bonds and equity market. It brings foreign exchange to the country but it has its own problems as it brings volatile money to the country. Foreign Institutional Investors (FIIs) can make portfolio investments. FIIs are allowed to invest in the primary and secondary capital markets in India under the Portfolio Investment Scheme 3. Foreign Institutional Investment (FII) FII is defined as an institution established or incorporated outside India for making investment in Indian securities.They may invest in securities traded in both the primary and secondary markets. These securities include shares, debentures, and units of mutual funds Foreign Institutional Investments are the investments by foreign financial institutes like banks, insurance companies, pension funds, mutual funds etc. These are mostly in Govt. securities which are quite secure. The entry and exit are very simple through FII’s. FIIs must register themselves with the Securities and Exchange Board of India (SEBI) and comply with the exchange control regulations of RBI. 4. External Commercial Borrowings (ECB)ECB refer to commercial loans (in the form of bank loans, buyers’ credit, suppliers’ credit, securitised instruments) availed from non-resident lenders with minimum average maturity of 3 years. ECB for investment in real sector – industrial sector, especially infrastructure sector-in India, are under Automatic Route. ECB in the following requires approval of the government : a. Activities/items that require an Industrial Licence b. Proposals in which the foreign collaborator has an existing venture/tie up in Indi a c. Proposals for acquisition of shares in an existing Indian company in some cases. . Depository Receipts (ADR/GDR) ADR is adopted by many large and well respected companies from India to raise funds from American Markets. If any Indian Company has issued ADRs in the American market wishes to further extend it to other developed and advanced countries such as Europe, then they can sell these ADRs to the public of Europe and the same would be named as GDR. ADRs and GDRs are not for investors in India – they can invest directly in the shares of various Indian companies. They are an excellent means of investment for NRIs and foreign nationals wanting to invest in India.By buying these, they can invest directly in Indian companies without going through the hassle of understanding the rules and working of the Indian financial market – since ADRs and GDRs are traded like any other stock. NRIs and foreigners can buy these using their regular equity trading accounts.  Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€Ã¢â‚¬â€- ROUTES OF ENTRY There are majorly two routes for entry in India – 1. Automatic Route : The route wherein no government approval is required for the investors. As a reference, FDI up to 100% is allowed in all activities/sectors. 2.Approval Route : The route wherein Government approval is required. This is done by either RBI or FIPB. Apart, from two major classifications. There can also be other classification also as shown below – 1. As a foreign company through a Liaison Office/ Representative Office, Project Office or a Branch Office. 2. As an Indian company through a Joint Venture or a Wholly Owned Subsidiary. LIAISON OFFICE / REPRESENTATIVE OFFICE Foreign corporations/entities are permitted to open liaison offices/representative offices in India for undertaking liaison activities on their behalf. Approval from RBI is needed.No fees, commission o r remuneration can be charged by the Indian liaison office. Liaison office cannot directly or indirectly undertake any trading, commercial or manufacturing activity and therefore, cannot earn any income in India. Its role is limited – 1. to representing the parent company/group companies in India 2. promoting export/import from/to India 3. promoting collaborations between parent company and companies in India 4. collecting information about possible market opportunities and providing information about the company and its products to prospective Indian customers.PROJECT OFFICE A foreign corporation, which has secured a contract from an Indian company to execute a project in India, is allowed to establish a project office in India without obtaining prior permission from RBI. Such offices cannot undertake or carry on any activity other than the activity relating to the execution of the project. The foreign corporation which sets up such a project office is required to furnish a prescribed report to the concerned regional office of RBI under whose jurisdiction the project office is set up.BRANCH OFFICE Foreign corporations/entities engaged in manufacturing and trading activities abroad are allowed to set up branch offices in India. The branch office can carry the same activities as the ones carried on by the foreign corporation overseas except that it cannot carry manufacturing activity on its own (sub-contracting is permitted). It can also stock & sell products in India and is permitted to acquire immovable property necessary or incidental to carrying on activities permitted by RBI. Green field investment:-A form of foreign direct investment where a parent company starts a new venture in a foreign country by constructing new operational facilities from the ground up. It occurs when multinational corporations enter into devolping countries to build new factories. Advantages:- Firm can build the subsidiary it wants. Relatively easily to establish operating r outines. New jobs are created in the local market. Disadvantages:- Faces competition before it is set up Time consuming research has to be carried out before hand. Emerging markets might be unstable, hence leading to extra costs & time consumption. Lengthy process from scratchBrown field investment:- The purchasing of an existing production or business facility by companies or governmental agencies for the purpose of starting new product or service production activity. This type of investment does not involved the new construction of plant operation facility. It is also called merger and acquisition. Advantages:- Less time consuming & quick to execute. Less risky as compared to greenfield. Immediate grab of market share. Reduce competition by taking over rival. The investor can bank on the existing goodwill of the acquired business. Disadvantages:- Not always successful.Cultural clash reducing effectiveness. Some workers are laid off, this affects motivational levels of present work ers JOINT VENTURE The cooperation of two or more individuals or businesses in which each agrees to share profit, loss and control in a specific enterprise. A Joint venture is a business agreement in which parties agree to develop, a new entity and new assets by contributing equity. The cooperation of two or more individuals or businesses in which each agrees to share profit, loss and control in a specific enterprise. Forming a joint venture is a good way for companies to partner without having to merge.JV’S are typically taxed as a partnership. Advantages:- Help the company to grow in those areas where the company does not have any expertise and would have failed if it was not for joint venture. Joint venture can help the company in reducing the risks which are associated with starting a new business. It results in better utilization of the resources which company has at its disposal. Disadvantages:- It does not give the management of the company control because the decisions are taken by both the companies and therefore it can create problems if both companies do not agree on some issues.It is difficult to integrate resources of companies entering into joint ventures WHOLLY – OWNED SUBSIDIARY A Foreign corporation can set up its subsidiary company either in the form of a private limited company or as a public limited company in India. A company in India is required to be incorporated under The Companies Act, 1956. In comparison with the branch office and liaison office, a subsidiary company provides maximum flexibility for conducting business in India. It can also undertake manufacturing activities in India

Commandment Relation to Christ-like Love Essay

The commandment I choose which displays three types of Christ-like love is the 8th commandment, â€Å"Thou shall not steal†. The first type of Christ-like love that the commandment â€Å"Thou shall not steal† displays is desiring what is the best for others. Stealing is something that is very wrong. For example, if someone is angry at someone, they might express their anger by stealing their belongings. This is not right. Someone can just approach the person they are angry at, and tell them how they feel about the situation. This is much better for others instead of stealing. The second type of Christ-like love that the commandment â€Å"Thou shall not steal† displays is that it is an emotion and decision. Stealing is a decision that is made when people go through various types of emotions. Some emotions include anger, frustration, mad, stressed, etc. When someone feels like this, they might feel like stealing someone’s belongings . By making the decision not to steal, it will make someone feel a different type of emotion. They will feel proud because they know that they are doing the right decision instead of doing something bad. Nevertheless, this is why the commandment â€Å"Thou shall not steal † is an emotion and decision. The third type of Christ-like love that the commandment â€Å"Thou shall not steal† displays is walking away from harm. Depending on what is stolen, it can be considered a crime. Nevertheless, anytime of stealing is wrong, no matter how valuable the item is. For example, if someone stole a top from The Gap store, it is considered a crime. In addition to this wrong crime, if someone steals a pencil from a teacher’s desk it is just as wrong. Even though the pencil isn’t as valuable as a top, any type of stealing causes harm. When walking away from this, it saves harm for both the stealer and the victim. Both people will not be involved in any type of stealing situation when showing the Christ-like love of walking away from harm.