Maritime Transportation Authors: Dr. Jean-Paul Rodrigue‚ Dr. Theo Notteboom and Dr. Brian Slack 1. Maritime Routes From its modest origins as Egyptian coastal sailships around 3‚200 BC‚ maritime transportation has always been the dominant support of global trade. By 1‚200 BC Egyptian ships traded as far as Sumatra‚ representing one of the longest maritime route of that time. European colonial powers‚ mainly Spain‚ Portugal‚ England‚ the Netherland and France would be the first to establish a true
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conquest of these Islands cost the Japanese very little in the loss of ships. After the quick expansion of the Japanese Empire‚ the Japanese Officers were unsure of what they should do next. Admiral Yamamoto wanted to attack America’s Aircraft Carriers in the Pacific. He felt that the destruction of these ships would ensure the security of Japan‚ for the Americans would not be able to send their planes to attack Japan. Admiral Yamamoto also felt that an attack on Midway Island would draw out
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Liberation Army) Air Force has 9‚218 aircrafts of which about 2300 are combat aircrafts‚ operating from its 489+ air bases. The Indian Air Force has 3382 aircrafts which includes 1335 combat aircrafts operating from 334+ bases and its sole aircraft carrier INS Viraat. The
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for energy from Japan‚ where the same figure was twice as large prior to the Fukushima disaster (Lloyd’s list‚ 2012c). The situation in the spot and in the time charter markets has been different in the past six months‚ mainly because usually LNG carriers are chartered for longer periods of time (15-20 years and more) and such long-term commitment is a challenge in today’s insecure economic situation – of course‚ by October 2012‚ still around 70% of the ships were tied to a long-term contracts. On
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Angle modulation is the process in which the instantaneous angle of the carrier signal is changed according to the instantaneous amplitude of modulating or message signal. Carrier Signal‚ The instantane ous frequency is f i ( t ) = lim f ∆ t ( t ) ∆t → 0 1 d θ i (t ) 2π dt For an unmodulate d carrier‚ θ i ( t ) is = θ i ( t ) = 2π f c t + φ c ‚ where φ c is constant There are two ways of varying the angle of the carrier: By varying the frequency‚ ωc – Frequency Modulation. By varying the
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structures of rail‚ motor carriers‚ and air. When you compare the rail cost structure to that of the cost structures of the motor‚ and air carriers‚ you will see that the rail carriers have a high structure cost. “One of the characteristics of railroads as previously noted is the level of fixed costs present in their cost structures.” (Coyle‚ 2011) These fixed cost exists because the ownership of the network and terminals are solo the responsibly of the railroads carriers. Because the railroads operates
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In balanced ring modulator‚ there are also transformers and the carrier. This type of modulator is like bridge modulator. However‚ the arrangement of the diodes are different from bridge rectifier either in clockwise or anticlockwise. For the operation of the balanced ring modulator‚ the output of the waveform produce by balanced ring modulator depends on the arrangement of the carrier. This is because the polarity of the carrier will affect the flow of modulating signal through the diodes. The
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07 (b) An audio signal 15sin2ᴨ (1500t) amplitude modulates a carrier 60 sin2ᴨ 07 (100‚000t). i) Sketch the audio signal. ii) Sketch the carrier. iii) Construct the modulated wave. iv) Determine the modulation index and percentage modulation. v) What are the frequencies of the audio signal and the carrier? OR 1 Q.4 (a) Determine the fourier transform of rectangular pulse shown below. Q.4 (b) A 107.6 MHz carrier is frequency modulated by a 7 KHz sine wave. The 07 resultant
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In the world we’re living in now‚ globalization processes have been supported by improvements in transport technology. Globalization is the process of international integration arising from the worldviews‚ products‚ ideas and other aspects of culture. Speed is one of the big factors that relates to the increase speed of many transport modes. The distance decay suggested that areas that are closer together are more likely to interact‚ whereas further away countries will less likely interact. Some
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Emir of Qatar‚ Sheikh Hamad Bin Khalifa Al Thani‚ Qatar Airways was re-launched in 1997 with a vision of making it into an International Airline with excellent standards of service. From then on Qatar Airways has become one of the fastest growing carriers in the world. Qatar Airways reached a milestone of a 100 destinations by the first quarter of 2011. Two months later it was awarded with Airline of the Year in 2011 in which almost 18 million travelers worldwide cast their votes. It was awarded the
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