Friday, January 31, 2020
Qantas Cas Notes Essay Example for Free
Qantas Cas Notes Essay Analyse and interpret data Maintain Qantas/Jetstars combined domestic market share of 65% Match capacity with demand sustaining loads around 80% Grow Jetstar in Asia Increase internet sales Increase customer service standards Enhance complementary portfolio businesses like Freight Reduce losses of Qantas international Transform Qantas International for focusing on right aircraft, right route, network optimisation and margin improvement Grow their frequent flyer program members and partners Market Segmentation and Selection of the Target Market Qantas market segmentation is complex because each segment has distinctive and different needs and expectations, such as the need to make stop-overs, the ability to pay fare levels and expectations in terms of in-flight service and comfort. Qantas mainly uses behavioural segmentation to select its target markets. Buyers are distinguished according to trip purpose e. . business and leisure/non-business travellers. Marketing Strategies Positioning Formulating the Marketing Mix Product Strategies Scheduling features Comfort-based features I ne Qantas Frequent Hyer scneme (H- Intangible benefits Brand name Price Cost plus margin: Qantas determines the cost of production and then adds a margin for profit Market: most fares at Qantas are determined by the market, where demand is matched with supply Competition based: monitoring what other airlines such as Virgin Blue are charging Pricing Strategies Price penetration Full Fares Promotional Fares Loss Leading Promotiono Advertising Sales promotions particularly in periods of subdued demand. When Qantas first launched Jetstar it released 100,000 tickets at $49. Qantas also launches a two-for- one ticket sale, which allowed a second passenger to fly for the cost of taxes and charges. Personal selling Publicity Place/Distribution Distribution to end customers is achieved by Qantas in two ways, direct and indirect. DIRECT via its own retail outlets INDIRECT via sales agents People Because most customers have direct contact with Qantas employees, especially on he ground, the impression they give has a big impact on how Qantas is perceived. Qantas staff must have appropriate personal attributes and training for their Jobs. Qantas spends more that $275 million a year on staff training to ensure a very positive interaction between its customers. Processes Booking flights online Online check in Mobile check in cnecK In KIOSK Physical Evidence Qantas customers are influences by Qantas signage, its website, its terminals, its lounges, etc. E-Marketing uses an electronic medium to perform marketing activities, e. g. website, email. Global Marketing is the use of marketing activities across national boundaries. Qantas uses: Global Branding Standardisation Customisation Implementing, Monitoring and Controlling the Marketing Plan Qantas has a systematic base for continually monitoring, controlling and adjusting its marketing activities using the following tools: Developing a financial forecast of revenue using statistical models, past sales data, executive Judgement and surveys of customer buying intentions. It then estimates costs such as market research costs, promotion costs, product development costs and distribution costs. Comparing actual and planned results using a number of performance criteria.
Thursday, January 23, 2020
Andrew Jacksons Campaign to Destroy the Bank of the United States Essa
When Andrew Jackson decided to make his veto message regarding the Bank of The United States on July 10, 1832 one thing was on his mind: killing the Bank of The United States forever! This one event was the fuel Jackson used for his reconstruction of the U.S. It all started to unravel during his election of 1828. Several different "sects" within the different states were teaming up with one another to form a coalition of discontent for the President and his reconstruction. Like Thomas Jefferson before him, Andrew Jackson was a tried-and-true defender of American freedom committed to nothing so much as breaking the knot of political corruption and restoring integrity to republican institutions. With the shattering and affirming dimensions of presidential action so well coordinated in his initial claim to legitimacy, Jackson's invoking of original understandings bore the makings of an entirely new government and politics. This dependent authority to disclaim would prove to be Jackson's most remarkable leadership resource. Yet, Jackson did not simply repeat Jefferson's performance, the essential elements of their shared leadership posture being reshaped by the worldly changes that intervened between their presidencies. Jackson's early course of action suggests that he would have liked nothing more than to have led in the expansive manner of Jefferson. Reasons for this difference between these two reconstructions are not difficult to separate since both witnessed dramatic changes in both state and society. It is here-with an acknowledging authority bearing down on a more forceful set of institutions and a more complicated policy- that the two faces of Andrew Jackson merge into one. In this final analysis there is no c... ...ress, the Court, the cabinet, the states, the party, and the electorate. The executive officer gained political foundations positively more independent than it had enjoyed before, and a new regime of governmental commitments and political priorities held convinced. In the process of moving behind his campaign to destroy the bank, Congress had begun to see for itself the special attractions of the new system. Democrats now criticized the President's efforts to control the state banks through national regulation as identical to the imposition of a new national bank. In effect then, Jackson had merely substituted one irresponsible and uncontrollable financial system for another. Jackson left office just as the new order was taking on a political life of its own. It was left to his successor to brush aside his failed experiment while affirming his basic course.
Wednesday, January 15, 2020
Investigating the inverse square law Essay
The intensity of the influence at any given radius, r, is the source strength divided by the area of the sphere. ââ¬Ë 1 The inverse square law can also be applied to gravity, electric fields, light and sound. In relation to electric fields, the electric force in Coulombââ¬â¢s law follows the inverse square law: ââ¬ËIf gamma rays are a form of electromagnetic radiation and undergo negligible absorption in air, then the intensity, I, should vary inversely as the square of the distance between the source and the detector. 2 Air acts as an almost transparent medium to ? -rays, and the intensity (rate of energy arrival per unit area) of ?-rays emanating from a point source varies inversely as the square of the distance from the source. 3 ?-rays fall into many distinct monoenergetic groups because of their variable energies which emanate from any particular emitter. The least energetic radiation will only pass through very thin foils, whereas the most energetic can penetrate up to several centimetres of lead. 4 As ? -rays tend to produce 10-4 times as many ion-pairs per unit length as ? -particles do, measurements are usually carried out using a Geiger-Mi ller (G-M) tube. 5 G-M tubes are widely used for detecting radiation and ionising particles. The anode is kept at a positive potential and the cathode is earthed. The tube may also have a thin mica end window. 6 When radiation enters the tube, a few electrons and ions are produced in the gas. If the voltage is above the breakdown potential (The minimum reverse voltage to make the diode conduct in reverse)7 of the gas, the number of electrons and ions are greatly multiplied. The electrons are attracted to the anode, and the positive ions move towards the cathode. The current flowing in the high resistance resistor (R) produces a pd which is amplified and passed to a counter which registers the passage of an ionising particle or radiation through the tube. 8 The tube cannot be filled with air as the discharge persists for a short time after the radiation is registered. This is due to electrons being emitted from the cathode by the positive ions which arrive there. Instead, the tube is filled with argon mixed with a halogen vapour which quenches, reduces the intensity, the discharge quickly, ensuring that the registered radiation does not affect the recording of other ionising particles. When the G-M tube is detecting one particle, if another enters the tube it will not be detected. This is known as dead time; the average maximum being approximately 90 microseconds. 9 Because this number is so small, it can justifiably be ignored for this experiment. Background radiation must be taken into account when taking readings from the source. Background radiation primarily comes from cosmic radiation and terrestrial sources. 10 This radiation will affect the count and must be corrected. The level of this radiation varies with location and must be measured before conducting the experiment. N0e-? t so ? = gradient/ N0e-? t Safety Precautions: To ensure the utmost safety before, during and after this experiment, some guidelines should be followed:à Food and drink should not be consumed whilst in the same room as the source Food items should not be stored in the same room as the source. The source should only be handled with long handled source handling tongs, and as little as possible à Hands should be washed thoroughly after contact with the source If in contact with the source for an extended period, it is recommended that a monitoring badge is worn à As the source will radiate in only one direction, it should not be pointed at anyone à The source should be locked away in a lead lined box when not in use à Open wounds should be covered securely. Protective gloves should be warn when handling potentially contaminated items Errors: To reduce the possible errors within the experiment, an optical bench will be used to ensure that the G-M tube and the source are properly aligned throughout, as the source radiates in one direction, the alignment must remain standard. Also, for small distances, specifically the distance d0 which is the distance the source is from the opening of the holder plus the distance of detection from the window in the G-M tube, vernier callipers will be used to hold as much accuracy as possible. Vernier callipers read to fractions of a millimetre, making them much more accurate than other measuring devices. Other distances, such as distance d, can be measured with a metre rule as the distances are larger which decreases the possible error in measuring. There will also be the error of human reaction times from observing the final count and pressing the stopclock. To ensure accuracy, practise using the stop-clock and count switch until reasonably consistent results can be obtained. Preliminary Work: To decide on an appropriate voltage to use, the G-M tube and source set-up should be tested. Place the source approximately 10 cm from the window of the G-M tube and increase the voltage slowly, until the count rate stops changing dramatically. Plot a graph of the count-rate, C, against EHT voltage, V. Record the voltages V1 and V2 between which the rate of counting does not vary too much. If the rate of counting begins to rise after remaining much the same for a range of voltage do not raise the voltage any higher or the tube may suffer damage. 14 The optimum operating voltage will be halfway between the voltage where the plateau begins and the voltage where it ends. To decide on the range of distances used, the source was moved close to the window of the G-M tube and was moved back slowly until the scaler could count adequately (5 cm). This is the smallest distance that will be used. To find the other extreme, the source was moved back until the count rate fell to a low value, but could still provide adequate results (35 cm). From these preliminary results I have decided to time for 10,000 counts at 5 cm from the source, 5000 counts for 10cm from the source, and 1000 for 15 ââ¬â 30cm. This is because any higher values will take considerably longer to measure. I will take three readings from each, as radioactive decay is a random process and it would be unlikely for more than three readings to be similar. An average will be calculated from the three values and the reading for the background radiation will be subtracted to find the corrected count rate. Equipment: Geiger-Mi ller tube of i sensitive type. Decade scaler with variable EHT supply à Sealed cobalt-60 source ââ¬â sealed to prevent contact with the source and to prevent isotropic radiation à Long handled source handling tongs ââ¬â to prevent contact with the source Optical bench with source holder ââ¬â to ensure constant alignment à Stop-clock, readable to at least two decimal places Vernier callipers ââ¬â to measure the distance d0 to a higher level of accuracy à Metre rule ââ¬â to measure the distance d Diagram: Where: à B is the optical bench with source holder, H à G is the Geiger-Mi ller tube à S is the decade scaler with variable EHT supply. R is the sealed radioactive source, cobalt-60 Cobalt-60 will be used as the gamma source as it is easily produced, by exposing natural cobalt to neutrons in a reactor, and therefore easy to acquire. 15 It also produces ? -rays with energies of 1. 17 MeV and 1. 33 MeV. Method: 1. Clamp the G-M tube to one end of the optical bench and attach it to the input socket of the scaler 2. Set the variable EHT voltage on the scaler at a minimum and turn it on, allowing a few minutes for the scaler to warm up 3. Change the variable EHT voltage on the scaler to the value found through preliminary work and set it to count pulses from the G-M tube. 4. Start the stopclock and measure the background radiation for an adequate length of time, e. g. 25 minutes, as background radiation is variable 5. Place the holder containing the ? -source at 5. 0 cm from the window of the G-M tube 6. Start the stopclock and stop after 10,000 counts are registered. Record this value and repeat twice 7. Move the ? -source to 10. 0 cm from the window of the G-M tube and repeat procedure 5, instead only counting 5000 counts 8. Move the ? -source to 15. 0 cm from the window of the G-M tube and repeat procedure 5, instead counting only 1000 counts 9. Repeat procedure 7 for sets of 5. 0 cm until a distance of 30. 0 cm is reached 10. Tabulate these results and find the average count rate for each distance 11. Evaluate 1/(d + do)2 12. Using the recorded value for background radiation, evaluate the corrected count rate for each distance 13. Plot the graph of corrected count rate against 1/(d + do)2 1 http://hyperphysics. phy-astr. gsu. edu/Hbase/forces/isq. html 2 Essential Pre-University Physicsââ¬â¢ ââ¬â Whelan & Hodgson, page 953 3 ââ¬ËEssential Principles of Physicsââ¬â¢ ââ¬â Whelan & Hodgson, page 472 4 ââ¬ËEssential Principles of Physicsââ¬â¢ ââ¬â Whelan & Hodgson, page 472. 5 ââ¬ËEssential Principles of Physicsââ¬â¢ ââ¬â Whelan & Hodgson, page 472 6 http://www. imagesco. com/articles/geiger/03. html 7 http://en. wikipedia. org/wiki/Breakdown_voltage 8 ââ¬ËEssential Pre-University Physicsââ¬â¢ ââ¬â Whelan & Hodgson, page 406 9 http://www. imagesco. com/articles/geiger/03. html 10 http://en. wikipedia. org/wiki/Background_radiation 11 ââ¬ËAdvanced Level Practical Physicsââ¬â¢ ââ¬â M Nelkon & JM Ogborn, page 218 12 ââ¬ËA Laboratory Manual of Physicsââ¬â¢ ââ¬â F. Tyler, page 269 13 http://en. wikipedia. org/wiki/Cobalt 14 ââ¬ËAdvanced Level Practical Physicsââ¬â¢ ââ¬â M Nelkon & JM Ogborn, page 212 15 http://en. wikipedia. org/wiki/Cobalt. Source: http://en.wikipedia. org/wiki/Geiger-M%C3%BCller_tube The anode is a central thin wire which is insulated from the surrounding cathode cylinder, which is metal or graphite coated.
Tuesday, January 7, 2020
Alzheimer s Disease ( Ad ) - 1112 Words
Alzheimerââ¬â¢s disease (AD) is a complex, multifactorial neurodegenerative disease that is currently being managed by symptomatic treatment. The affected areas include the central nervous system (CNS) which is made up of the brain and spinal cord. The brain is essential in managing our thoughts, cognitive abilities, and our ability to interact with the environment. AD patients are known to experience symptoms such as memory loss in the early stages which develop into speaking difficulties to eventually hallucinations. The commonly used AD treatments include Donepezil, rivastigmine, galantamine and memantine. Only the last two will be discussed in this essay and novel treatments. The current treatments for AD focus on relieving symptomsâ⬠¦show more contentâ⬠¦The epsilon4 allele of apolipoprotein E4 (ApoE4) which is located in chromosome 19 is linked to the onset and progression of AD. The synaptic loss is due to a loss of cholinergic neurones which transmits nerve signa ls in the brain which are known to be linked to memory formation (figure 2). Amyloid plaques cause this loss. S.McGREEVEY et al,2013. J. Cerebral Blood Flow Metabolism, 2006,1562ââ¬â1576. ACh and memory ACh helps in memory formation by facilitating cell to cell signalling of the cholinergic neurones in the frontal cortex of the brain (thoughts and action). ACh is synthesised by choline transferase enzyme (ChaT) in the cytoplasm of the pre-synaptic neurone (figure 3). Currently approved medicines such as galantamine and memantine are used to treat AD (ACh inhibitors) that aims to alleviate symptoms of AD. Galantamine mechanism of action Galantamine is a tertiary alkaloid selective AChE inhibitor (mild action). AD disease is associated with down regulation of nicotinic receptors and NMDAR (Lenzken et al,2007), but with stimulation. As a result of administering galantamine this releases excitatory neurotransmitters ACh and glutamate which protects against beta-amyloid (1-40 peptide) toxicity in the brain, and cell death (antiapoptotic). Galantamine has the ability to protect against cell death and its neuroprotective mechanism by acting as a
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