Methods Of Electricity Production Engineering Essay

Methods Of Electricity Production Engineering Essay Electricity plays a major part in our society today. It is used in our hospitals, in our banks, in our homes, and in our cars. No matter what we do, we couldnt live without it. But all this electricity doesnt just appear at when we need it, we must create it. All over the world, there is millions of electricity generating stations. Some of these are small, others huge. Some of the stations run on the power of fire and steam, while others run on the power of the wind or falling water. Some even use the power of the sun alone to generate electricity. But with so many different ways to produce electricity, how do we know which ways are the most efficient and the most environmentally effective? Task 2 Electromagnetic induction is a phenomenon that occurs when a magnetic field intersects a piece of metal, most commonly a piece of wire, which can be affected by magnets. The most common method to induce is to create a magnetic field in such a way that the field intersects a coil of wire. This can be done in multiple ways, although the main two ways are to either pass a magnet through the center of a coil of wire, or to move a coil of wire in a magnetic field. However, if both the coil of wire and the magnet are both stationary, no electric current will be produced. The circuit must also be closed for a current to flow. The most efficient way to produce a current is to rotate a coil in a magnetic field. There is three ways that the amount of power generated by electromagnetic magnetic induction can be increased: Increasing the strength of the magnetic field. Increasing the amount of turns in the coil that is being affected by the magnetic field. Increasing the speed at which the magnetic field intersects the coil. In most power stations however, the generators used spin the magnets, or in most cases, electromagnets, around the wire. This enables a greater amount of coils to be used without the need to rotate a greater mass. The stations use turbines to rotate the magnets or coils. To rotate the turbines, a power source is needed. There are four main power sources that are used: Coal Burning Coal burning power stations use coal that has been mined out of the earth. This coal is burnt to create heat. The heat makes water evaporate into steam. As the steam rises, it hits rotors which spin the turbines. Nuclear Reactions Nuclear reactors work in somewhat the same way as a coal burning power station. These power stations use the power of a nuclear reaction to create the heat needed to boil the water that then turns to steam, which then turns the turbines. When the water is heated however, it becomes radioactive. This means that the water must be kept in a separate chamber to the water that will turn to steam. The radioactive water heats the clean water by means of conduction. Wind Wind farms, as they are commonly called, use the power of the wind to rotate massive rotor blades. These rotor blades turn a shaft that is connected to a generator, thus producing electricity. Gravity The most common of power stations that utilize gravity are called hydro power stations. These use falling water to turn the turbines at the base of a mountain. As the water comes down the mountain, it is pulled by the force of gravity, making it travel at high speeds, which turns the turbines faster, which makes more electricity. Another power source that is used to create electricity is the energy produced from the Sun. Solar panels collect solar radiation from the sun and actively converts that energy to electricity. Solar panels are comprised of several individual solar cells. These solar cells function similarly to large semiconductors and utilize a large-area junction diode. When the solar cells are exposed to sunlight, the junction diodes convert the energy from sunlight into usable electrical energy. The energy generated from photons striking the surface of the solar panel allows electrons to be knocked out of their orbits and released, and electric fields in the solar cells pull these free electrons in a directional current, from which metal contacts in the solar cell can generate electricity. The conversion of sunlight to usable electrical energy is called the Photovoltaic Effect. After the electricity has been generated, it needs to be transmitted around the country. When electricity passes through a wire, some of the energy is lost as heat energy. In small devices, this is generally ignored because the wires are short enough for the energy that is lost as heat to be quite minimal. When the length of the wire increases, the amount of energy that is lost as heat also increases. This can be a problem when the wires are spanning thousands of kilometers. The reason for the lost of energy as heat is because of the current. This means that current is proportional to heat lost. Since this is the case, if the current is dropped to almost zero, then the energy lost as heat will also drop to almost zero. This can be done with the use of transformers. Transformers work on the law of magnetic induction. This is done by passing a magnetic field through a primary coil of wire. The magnetic field produced by the current can be used to create a current in a secondary coil. If there is twice the amount of coils in the secondary coil as there is in the primary coil. The current will be halved and vice versa. When the current is lowered, the process is transformed is referred to as a step-up transformer, and when the current is doubled, it is a step-down transformer. When the current is changed, the voltage is also changed. This is because current is inversely proportion to the voltage. This means if the current is halved, the voltage is doubled. This means when a step-up transformer halves the current, it doubles the voltage. To get the current as low as possible, the current must be brought up to around two hundred and twenty thousand volts. Task 3 Aim: To research the amount of energy three different types of power plants produce and compare their environmental impacts. Method: Three main power plants from within the state of Queensland were chosen to be examined. The plants chosen were; Tarong coal burning power plant, Wivenhoe hydroelectric power station, and the Hillcrest Christian College solar panel power plant. Research on these specific power plants was completed by using in-class and as homework. When all the needed research was acquired, the data was examined and a conclusion was drawn on which plant provided the most power, which plant was the most environmentally friendly, and which plant had the least intensity+. Results: Three sets of data have been collected: Tarong Power Station*# Date Tons CO2 MWh Energy Intensity 2000 9,196,047 7,913,802 2,324 2010 9,841,752 8,523,634 2,309 2020 9,956,845 8,633,139 2,307 Wivenhoe Power Station*#^ Date Tons CO2 MWh Energy Intensity 2000 0 1,052,437 0 2010 0 973,419 0 2020 603,438 2,109,812 572 Hillcrest Power Plant Date Tons CO2 MWh Energy Intensity 1-Jul-09 0 0.5353 0 1-Aug-09 0 0.7521 0 1-Sep-09 0 0.8029 0 1-Oct-09 0 0.7752 0 1-Nov-09 0 0.7237 0 1-Dec-09 0 0.6808 0 1-Jan-10 0 0.7036 0 1-Feb-10 0 0.5804 0 2009/2010 (Average) 0 0.69425 0 +: Pounds of CO2 emitted per megawatt-hour of electricity produced. *: The data collected also was coupled with a projected output for the next decade ^: The power station plans on a future upgrade that will produce carbon pollution #: Average decade output This data was put in the corresponding tables for comparison. Discussion: By looking at the data above it two main points can be made: Energy Output When the Tarong and Wivenhoe power stations are compared, it can be observed that the Tarong coal burning station produces a far larger amount of energy. It must be kept in mind that the Tarong station is a far larger station when compared to either of the other to stations examined, with the Tarong station having a maximum power output of over 1400MW, where as the Wivenhoe station has a maximum power output of only 500MW, and the Hillcrest plants power output depends on the intensity of the sunlight it receives. Even if the maximum output for the Wivenhoe station was over three times the size, putting the maximum output to 1500MW, theoretically, it would still be producing less energy than the Tarong station. It would also be highly unfeasible to achieve the same energy output with the Hillcrest plant as the maximum power output would have to be increased by at least sixteen million times. This puts the Tarong coal burning station as the most economically effective power station out of the three. CO2 Emissions At the current date, both the Wivenhoe station and the Hillcrest plant are producing no carbon emissions at all, where as the Tarong station is producing a very high amount of CO2. This puts the Wivenhoe station and the Hillcrest plant on equal ground in this aspect. In the future however, the Wivenhoe station is planning on installing upgrades to their station which, presumably, will force the plant to start giving off CO2 emissions. Up until these upgrades are made, the two stations are on the same level with CO2 emissions, but as soon as the upgrades are made, the Hillcrest solar power plant will be the most environmentally effective out of the three stations researched. Even though all the power stations that were examined are the few main ways that energy is generated in our current society, there are many other ways that the energy that we use gets generated. These consist of power stations that use means of; Biomass energy, wind energy, nuclear energy, tidal energy, combustion energy. These ways are examined in more depth below: Biomass Energy Biomass energy uses the biodegradable waste products of our everyday lives, such as plant waste or animal matter, to create either a thermal or chemical conversion. During these conversions, the matter undergoes chemical reactions that produce either heat or other chemicals that can be used in other items. This method of green energy is very environmentally friendly as it takes the form of what typically happens in our natural world, decomposition for example. Wind Energy The use of giant propellers to catch the force of the wind and use that force to turn a generator is the way wind turbines work. In theory the idea of using the power of something as ambient and as reliable as the wind is one of the most environmentally friendly methods to create electricity that is around. This is because there is no byproducts of any sort and the wind that is used can never be depleted. The major problem with using this as an energy source is the strength of wind needed to spin the propellers. This is because although there is wind everywhere in our world, the strength of this wind, on the most part, is not always strong enough to rotate the propellers due to their immense weight. Nuclear Energy Nuclear energy is one of the most dangerous forms of generating energy that we have in our current society. When it is harnessed properly and efficiently, it is also one of our most effective ways of producing energy. The basic concept of a nuclear reactor is similar to that of a coal burning station, to create heat to make steam to turn turbines. One major downfall with these power stations is the waste the produce. This waste is not CO2, but is radioactive waste that, if dispersed of correctly, would provide our society with a clean and efficient way to generate power, although this is not the case in the present time. Until there is a way to dispose of the nuclear waste efficiently, nuclear power will not become our primary source of power. Tidal Energy Tidal energy is a form of hydro power that converts the energy of the tides into a useable form of energy. Although this method is not widely used, it has great potential for the future of power generation. This is because the tides are far more predictable than the wind and solar energy. Tides are so predictable in fact; that we can tell exactly what they will be doing in two hundred years. The principle behind tidal power is the same as that of wind power. Underwater propellers are used to capture the energy of the flowing water, which is then converted to power by large turbines. This form of energy is just as clean as wind energy, but also has the additional benefit of not creating a poor spectacle as most of the generator is hidden underwater, instead of out in the open. Combustion Energy Also called mechanical energy, this is the act of using natural gasses or conventional fuels to power a combustion engine which then is used to rotate a turbine. This method is most commonly seen in small or backup generators that are made for private or commercial use. Two side effects of this type of energy is the noise that is made during combustion, and the byproduct of CO2. On the most part, these generators are used mainly in the form of small, portable types. This is because the forces that would need to be dealt with on a large scale generator are quite large and can be potentially hazardous. Task 4 Conclusion: When all the data is examined, hydroelectric power stations proved to be not only the most environmentally safe, equal with solar power, producing zero CO2 emissions, but it also was able to decent a fair amount of power. Even though the coal burning power station produced a lot more power, almost an eightfold on what hydro station produced, the hydro station produced zero percent of the emissions that the coal burning station did. In this respect, if the hydro station was to be increased to eight times its current size, theoretically, our society would be provided with more energy than the coal burning station produced, along with no emissions or byproducts. In contrast, the solar power plant also gave off no emissions, although the amount power produced was quite unsubstantial in comparison. As discussed earlier, the solar power plant would have to create eighteen times the amount of energy that it currently is producing to be a contender in power generation, but doing this would m ean that the size of area needed would be on the same scale of increase. This is feasible in terms of installing solar panels on every roof in our major cities for example, although the costs of doing such a thing would be far greater than that of upgrading the hydro power plant. It is recommended that the use of hydroelectric power stations is continued and their usage is increased. This is not only a one of the more environmentally friendly types of renewable energy, but it is also one of the more reliable according to the research completed. This method does not produce byproducts of any kind and does not make waste of any of the resources used in the production of power that is generated.

Chapter 8 Flight of the Fat Lady

In no time at all, Defense Against the Dark Arts had become most people's favorite class. Only Draco Malfoy and his gang of Slytherins had anything bad to say about Professor Lupin. â€Å"Look at the state of his robes,† Malfoy would say in a loud whisper as Professor Lupin passed. â€Å"He dresses like our old house elf.† But no one else cared that Professor Lupin's robes were patched and frayed. His next few lessons were just as interesting as the first. After Boggarts, they studied Red Caps, nasty little goblin-like creatures that lurked wherever there had been bloodshed: in the dungeons of castles and the potholes of deserted battlefields, waiting to bludgeon those who had gotten lost. From Red Caps they moved on to Kappas, creepy. water-dwellers that looked like scaly monkeys, with webbed hands itching to strangle unwitting waders in their ponds. Harry only wished he was as happy with some of his other classes. Worst of all was Potions. Snape was in a particularly vindictive mood these days, and no one was in any doubt why. The story of the Boggart assuming Snape's shape, and the way that Neville had dressed it in his grandmother's clothes, had traveled through the school like wildfire. Snape didn't seem to find it funny. His eyes flashed menacingly at the very mention of Professor Lupin's name, and he was bullying Neville worse than ever. Harry was also growing to dread the hours he spent in Professor Trelawney's stifling tower room, deciphering lopsided shapes and symbols, trying to ignore the way Professor Trelawney's enormous eyes filled with tears every time she looked at him. He couldn't like Professor Trelawney, even though she was treated with respect bordering on reverence by many of the class. Parvati Patil and Lavender Brown had taken to haunting Professor Trelawney's tower room at lunch times, and always returned with annoyingly superior looks on their faces, as though they knew things the others didn't. They had also started using hushed voices whenever they spoke to Harry, as though he were on his deathbed. Nobody really liked Care of Magical Creatures, which, after the action-packed first class, had become extremely dull. Hagrid seemed to have lost his confidence. They were now spending lesson after lesson learning how to look after flobberworms, which had to be some of the most boring creatures in existence. â€Å"Why would anyone bother looking after them?† said Ron, after yet another hour of poking shredded lettuce down the flobberworms' throats. At the start of October, however, Harry had something else to occupy him, something so enjoyable it more than made up for his unsatisfactory classes. The Quidditch season was approaching, and O1iver Wood, Captain of the Gryffindor team, called a meeting on Thursday evening to discuss tactics for the new season. There were seven people on a Quidditch team: three Chasers, whose job it was to score goals by putting the Quaffle (a red, soccer-sized ball) through one of the fifty-foot-high hoops at each end of the field; two Beaters, who were equipped with heavy bats to repel the Bludgers (two heavy black balls that zoomed around trying to attack the players); a Keeper, who defended the goal posts, and the Seeker, who had the hardest job of all, that of catching the Golden Snitch, a tiny, winged, walnut-sized ball, whose capture ended the game and earned the Seeker's team an extra one hundred and fifty points. Oliver Wood was a burly seventeen-year-old, now in his seventh and final year at Hogwarts. There was a quiet sort of desperation in his voice as he addressed his six fellow team members in the chilly locker rooms on the edge of the darkening Quidditch field. â€Å"This is our last chance — my last chance — to win the Quidditch Cup,† he told them, striding up and down in front of them. â€Å"I'll be leaving at the end of this year. I'll never get another shot at it.† â€Å"Gryffindor hasn't won for seven years now. Okay, so we've had the worst luck in the world — injuries — then the tournament getting called off last year.† Wood swallowed, as though the memory still brought a lump to his throat. â€Å"But we also know we've got the best — ruddy — team — in — the — school,† he said, punching a fist into his other hand, the old manic glint back in his eye. â€Å"We've got three superb Chasers.† Wood pointed at Alicia Spinner, Angelina Johnson, and Katie Bell. â€Å"We've got two unbeatable Beaters.† â€Å"Stop it, Oliver, you're embarrassing us,† said Fred and George Weasley together, pretending to blush. â€Å"And we've got a Seeker who has never failed to win us a match!† Wood rumbled, glaring at Harry with a kind of furious pride. â€Å"And me,† he added as an afterthought. â€Å"We think you're very good too, Oliver,† said George. â€Å"Spanking good Keeper,† said Fred. â€Å"The point is,† Wood went on, resuming his pacing, â€Å"the Quidditch Cup should have had our name on it these last two years. Ever since Harry joined the team, I've thought the thing was in the bag. But we haven't got it, and this year's the last chance we'll get to finally see our name on the thing†¦Ã¢â‚¬  Wood spoke so dejectedly that even Fred and George looked sympathetic. â€Å"Oliver, this year's our year,† said Fred. â€Å"We'll do it, Oliver!† said Angelina. â€Å"Definitely,† said Harry. Full of determination, the team started training sessions, three evenings a week. The weather was getting colder and wetter, the nights darker, but no amount of mud, wind, or rain could tarnish Harry's wonderful vision of finally winning the huge, silver Quidditch Cup. Harry returned to the Gryffindor common room one evening after training, cold and stiff but pleased with the way practice had gone, to find the room buzzing excitedly. â€Å"What's happened?†, he asked Ron and Hermione, who were sitting in two of the best chairs by the fireside and completing some star charts for Astronomy. â€Å"First Hogsmeade weekend,† said Ron, pointing at a notice that had appeared on the battered old bulletin board. â€Å"End of October. Halloween.† â€Å"Excellent,† said Fred, who had followed Harry through the portrait hole. â€Å"I need to visit Zonko's. I'm nearly out of Stink Pellets.† Harry threw himself into a chair beside Ron, his high spirits ebbing away. Hermione seemed to read his mind. â€Å"Harry, I'm sure you'll be able to go next time,† she said. â€Å"They're bound to catch Black soon. He's been sighted once already.† â€Å"Black's not fool enough to try anything in Hogsmeade,† said Ron. â€Å"Ask McGonagall if you can go this time, Harry. The next one might not be for ages –â€Å" â€Å"Ron!† said Hermione. â€Å"Harry's supposed to stay in school –â€Å" â€Å"He can't be the only third year left behind,† said Ron. â€Å"Ask McGonagall, go on, Harry –â€Å" â€Å"Yeah, I think I will,† said Harry, making up his mind. Hermione opened her mouth to argue, but at that moment Crookshanks leapt lightly onto her lap. A large, dead spider was dangling from his mouth. â€Å"Does he have to eat that in front of us?† said Ron, scowling. â€Å"Clever Crookshanks, did you catch that all by yourself?† said Hermione. Crookshanks; slowly chewed up the spider, his yellow eyes fixed insolently on Ron. â€Å"Just keep him over there, that's all,† said Ron irritably, turning back to his star chart. â€Å"I've got Scabbers asleep in my bag.† Harry yawned. He really wanted to go to bed, but he still had his own star chart to complete. He pulled his bag toward him, took out parchment, ink, and quill, and started work. â€Å"You can copy mine, if you like,† said Ron, labeling his last star with a flourish and shoving the chart toward Harry. Hermione, who disapproved of copying, pursed her lips but didn't say anything. Crookshanks was still staring unblinkingly at Ron, flicking the end of his bushy tail. Then, without warning, he pounced. â€Å"OY!† Ron roared, seizing his bag as Crookshanks sank four sets of claws deep inside it and began tearing ferociously. â€Å"GET OFF, YOU STUPID ANIMAL!† Ron tried to pull the bag away from Crookshanks, but Crookshanks clung on, spitting and slashing. â€Å"Ron, don't hurt him!† squealed Hermione; the whole common room was watching; Ron whirled the bag around, Crookshanks still clinging to it, and Scabbers came flying out of the top — â€Å"CATCH THAT CAT!† Ron yelled as Crookshanks freed himself from the remnants of the bag, sprang over the table, and chased after the terrified Scabbers. George Weasley made a lunge for Crookshanks but missed; Scabbers streaked through twenty pairs of legs and shot beneath an old chest of drawers. Crookshanks skidded to a halt, crouched low on his bandy legs, and started making furious swipes beneath it with his front paw. Ron and Hermione hurried over; Hermione grabbed Crookshanks around the middle and heaved him away; Ron threw himself onto his stomach and, with great difficulty, pulled Scabbers out by the tail. â€Å"Look at him!† he said furiously to Hermione, dangling Scabbers in front of her. â€Å"He's skin and bone! You keep that cat away from him!† â€Å"Crookshanks doesn't understand it's wrong!† said Hermione, her voice shaking. â€Å"All cats chase rats, Ron!† â€Å"There's something funny about that animal!† said Ron, who was trying to persuade a frantically wiggling Scabbers back into his pocket. â€Å"It heard me say that Scabbers was in my bag!† â€Å"Oh, what rubbish,† said Hermione impatiently. â€Å"Crookshanks could smell him, Ron, how else d'you think –â€Å" â€Å"That cat's got it in for Scabbers!† said Ron, ignoring the people around him, who were starting to giggle. â€Å"And Scabbers was here first, and he's ill!† Ron marched through the common room and out of sight up the stairs to the boys' dormitories. * ****** Ron was still in a bad mood with Hermione next day. He barely talked to her all through Herbology, even though he, Harry, and Hermione were working together on the same Puffapod. â€Å"How's Scabbers?† Hermione asked timidly as they stripped fat pink pods from the plants and emptied the shining beans into a wooden pail. â€Å"He's hiding at the bottom of my bed, shaking,† said Ron angrily, missing the pail and scattering beans over the greenhouse floor. â€Å"Careful, Weasley, careful!† cried Professor Sprout as the beans burst into bloom before their very eyes. They had Transfiguration next. Harry, who had resolved to ask Professor McGonagall after the lesson whether he could go into Hogsmeade with the rest, joined the line outside the class trying to decide how he was going to argue his case. He was distracted, however, by a disturbance at the front of the line. Lavender Brown seemed to be crying. Parvati had her arm around her and was explaining something to Seamus Finnigan and Dean Thomas, who were looking very serious. â€Å"What's the matter, Lavender?† said Hermione anxiously as she, Harry, and Ron went to join the group. â€Å"She got a letter from home this morning,† Parvati whispered. â€Å"It's her rabbit, Binky. He's been killed by a fox.† â€Å"Oh,† said Hermione, â€Å"I'm sorry, Lavender.† â€Å"I should have known!† said Lavender tragically. â€Å"You know what day it is?† â€Å"Er –â€Å" â€Å"The sixteenth of October! ‘That thing you're dreading, it will happen on the sixteenth of October!' Remember? She was right, she was right!† The whole class was gathered around Lavender now. Seamus shook his head seriously. Hermione hesitated; then she said, â€Å"You — you were dreading Binky being killed by a fox?† â€Å"Well, not necessarily by a fox,† said Lavender, looking up at Hermione with streaming eyes, â€Å"but I was obviously dreading him dying, wasn't I?† â€Å"Oh,† said Hermione. She paused again. Then — â€Å"Was Binky an old rabbit?† â€Å"N — no!† sobbed Lavender. â€Å"H — he was only a baby!† Parvati tightened her arm around Lavender's shoulders. â€Å"But then, why would you dread him dying?† said Hermione. Parvati glared at her. â€Å"Well, look at it logically,† said Hermione, turning to the rest of the group. â€Å"I mean, Binky didn't even die today, did he? Lavender just got the news today –† Lavender wailed loudly. â€Å"?C and she can't have been dreading it, because it's come as a real shock –â€Å" â€Å"Don't mind Hermione, Lavender,† said Ron loudly, â€Å"she doesn't think other people's pets matter very much.† Professor McGonagall opened the classroom door at that moment, which was perhaps lucky; Hermione and Ron were looking daggers at each other, and when they got into class, they seated themselves on either side of Harry and didn't talk to each other for the whole class. Harry still hadn't decided what he was going to say to Professor McGonagall when the bell rang at the end of the lesson, but it was she who brought up the subject of Hogsmeade first. â€Å"One moment, please!† she called as the class made to leave. â€Å"As you're all in my House, you should hand Hogsmeade permission forms to me before Halloween. No form, no visiting the village, so don't forget!† Neville put up his hand. â€Å"Please, Professor, I — I think I've lost –â€Å" â€Å"Your grandmother sent yours to me directly, Longbottom,† said Professor McGonagall. â€Å"She seemed to think it was safer. Well, that's all, you may leave.† â€Å"Ask her now,† Ron hissed at Harry. â€Å"Oh. but –† Hermione began. â€Å"Go for it, Harry,† said Ron stubbornly. Harry waited for the rest of the class to disappear, then headed nervously for Professor McGonagall's desk. â€Å"Yes, Potter?† Harry took a deep breath. â€Å"Professor, my aunt and uncle — er — forgot to sign my form,† he said. Professor McGonagall looked over her square spectacles at him but didn't say anything. â€Å"So — er — d'you think it would be all right mean, will It be okay if I — if I go to Hogsmeade?† Professor McGonagall looked down and began shuffling papers on her desk. â€Å"I'm afraid not, Potter,† she said. â€Å"You heard what I said. No form, no visiting the village. That's the rule.† â€Å"But — Professor, my aunt and uncle — you know, they're Muggles, they don't really understand about — about Hogwarts forms and stuff,† Harry said, while Ron egged him on with vigorous nods. â€Å"If you said I could go –â€Å" â€Å"But I don't say so,† said Professor McGonagall, standing up and piling her papers neatly into a drawer. â€Å"The form clearly states that the parent or guardian must give permission.† She turned to look at him, with an odd expression on her face. Was it pity? â€Å"I'm sorry, Potter, but that's my final word. You had better hurry, or you'll be late for your next lesson.† ****** There was nothing to be done. Ron called Professor McGonagall a lot of names that greatly annoyed Hermione; Hermione assumed an ‘all-for-the-best' expression that made Ron even angrier, and Harry had to endure everyone in the class talking loudly and happily about what they were going to do first, once they got into Hogsmeade. â€Å"There's always the feast,† said Ron, in an effort to cheer Harry up. â€Å"You know, the Halloween feast, in the evening.† â€Å"Yeah,† said Harry gloomily, â€Å"great.† The Halloween feast was always good, but it would taste a lot better if he was coming to it after a day in Hogsmeade with everyone else. Nothing anyone said made him feel any better about being left behind. Dean Thomas, who was good with a quill, had offered to forge Uncle Vernon's signature on the form, but as Harry had already told Professor McGonagall he hadn't had it signed, that was no good. Ron halfheartedly suggested the Invisibility Cloak, but Hermione stamped on that one, reminding Ron what Dumbledore had told them about the Dementors being able to see through them. Percy had what were possibly the least helpful words of comfort. â€Å"They make a fuss about Hogsmeade, but I assure you, Harry, it's not all it's cracked up to be,† he said seriously. â€Å"All right, the sweetshop's rather good, and Zonko's Joke Shop's frankly dangerous, and yes, the Shrieking Shack's always worth a visit, but really, Harry, apart from that, you're not missing anything.† ****** On Halloween morning, Harry awoke with the rest and went down to breakfast, feeling thoroughly depressed, though doing his best to act normally. â€Å"We'll bring you lots of sweets back from Honeydukes,† said Hermione, looking desperately sorry for him. â€Å"Yeah, loads,† said Ron. He and Hermione had finally forgotten their squabble about Crookshanks in the face of Harry's difficulties. â€Å"Don't worry about me,† said Harry, in what he hoped was at, offhand voice, â€Å"I'll see you at the feast. Have a good time.† He accompanied them to the entrance hall, where Filch, the caretaker, was standing inside the front doors, checking off names against a long list, peering suspiciously into every face, and making sure that no one was sneaking out who shouldn't be going. â€Å"Staying here, Potter?† shouted Malfoy, who was standing in line with Crabbe and Goyle. â€Å"Scared of passing the Dementors?† Harry ignored him and made his solitary way up the marble staircase, through the deserted corridors, and back to Gryffindor Tower. â€Å"Password?† said the Fat Lady, jerking out of a doze. â€Å"Fortuna Major,† said Harry listlessly. The portrait swung open and he climbed through the hole into the common room. It was full of chattering first-and second-years, and a few older students, who had obviously visited Hogsmeade so often the novelty had worn off. â€Å"Harry! Harry! Hi, Harry!† It was Colin Creevey, a second year who was deeply in awe of Harry and never missed an opportunity to speak to him. â€Å"Aren't you going to Hogsmeade, Harry? Why not? Hey –† Colin looked eagerly around at his friends — â€Å"you can come and sit with us, if you like, Harry!† â€Å"Er — no, thanks, Colin,† said Harry, who wasn't in the mood to have a lot of people staring avidly at the scar on his forehead. â€Å"I — I've got to go to the library, got to get some work done.† After that, he had no choice but to turn right around and head back out of the portrait hole again. â€Å"What was the point of waking me up?† the Fat Lady called grumpily after him as he walked away. Harry wandered dispiritedly toward the library, but halfway there he changed his mind; he didn't feel like working. He turned around and came face-to-face with Filch, who had obviously just seen off the last of the Hogsmeade visitors. â€Å"What are you doing?† Filch snarled suspiciously. â€Å"Nothing,† said Harry truthfully. â€Å"Nothing!† spat Filch, his jowls quivering unpleasantly. â€Å"A likely story! Sneaking around on your own — why aren't you in Hogsmeade buying Stink Pellets and Belch Powder and Whizzing Worms like the rest of your nasty little friends?† Harry shrugged. â€Å"Well, get back to your common room where you belong!† snapped Filch, and he stood glaring until Harry had passed out of sight. But Harry didn't go back to the common room; he climbed a staircase, thinking vaguely of visiting the Owlery to see Hedwig, and was walking along another corridor when a voice from inside one of the rooms said, â€Å"Harry?† Harry doubled back to see who had spoken and met Professor Lupin, looking around his office door. â€Å"What are you doing?† said Lupin, though in a very different voice from Filch. â€Å"Where are Ron and Hermione?† â€Å"Hogsmeade,† said Harry, in a would-be casual voice. â€Å"Ah,† said Lupin. He considered Harry for a moment. â€Å"Why don't you come in? I've just taken delivery of a Grindylow for our next lesson.† â€Å"A what?† said Harry. He followed Lupin into his office. In the corner stood a very large tank of water. A sickly green creature with sharp little horns had its face pressed against the glass, pulling faces and flexing its long, spindly fingers. â€Å"Water demon,† said Lupin, surveying the Grindylow thoughtfully. â€Å"We shouldn't have much difficulty with him, not after the Kappas. The trick is to break his grip. You notice the abnormally long fingers? Strong, but very brittle.† The Grindylow bared its green teeth and then buried itself in a tangle of weeds in a corner. â€Å"Cup of tea?† Lupin said, looking around for his kettle. â€Å"I was just thinking of making one.† â€Å"All right,† said Harry awkwardly. Lupin tapped the kettle with his wand and a blast of steam issued suddenly from the spout. â€Å"Sit down,† said Lupin, taking the lid off a dusty tin. â€Å"I've only got teabags, I'm afraid — but I daresay you've had enough of tea leaves?† Harry looked at him. Lupin's eyes were twinkling. â€Å"How did you know about that?† Harry asked. â€Å"Professor McGonagall told me,† said Lupin, passing Harry a chipped mug of tea. â€Å"You're not worried, are you?† â€Å"No,† said Harry. He thought for a moment of telling Lupin about the dog he'd seen in Magnolia Crescent but decided not to. He didn't want Lupin to think he was a coward, especially since Lupin already seemed to think he couldn't cope with a Boggart. Something of Harry's thoughts seemed to have shown on his face, because Lupin said, â€Å"Anything worrying you, Harry?† â€Å"No,† Harry lied. He drank a bit of tea and watched the Grindylow brandishing a fist at him. â€Å"Yes,† he said suddenly, putting his tea down on Lupin's desk. â€Å"You know that day we fought the Boggart?† â€Å"Yes,† said Lupin slowly. â€Å"Why didn't you let me fight it?† said Harry abruptly. Lupin raised his eyebrows. â€Å"I would have thought that was obvious, Harry,† he said, sounding surprised. Harry, who had expected Lupin to deny that he'd done any such thing, was taken aback. â€Å"Why?† he said again. â€Å"Well,† said Lupin, frowning slightly, â€Å"I assumed that if the Boggart faced you, it would assume the shape of Lord Voldemort.† Harry stared. Not only was this the last answer he'd expected, but Lupin had said Voldemort's name. The only person Harry had ever heard say the name aloud (apart from himself) was Professor Dumbledore. â€Å"Clearly, I was wrong,† said Lupin, still frowning at Harry. â€Å"But I didn't think it a good idea for Lord Voldemort to materialize in the staffroom. I imagined that people would panic.† â€Å"I didn't think of Voldemort,† said Harry honestly. â€Å"I — I remembered those Dementors.† â€Å"I see,† said Lupin thoughtfully. â€Å"Well, well†¦I'm impressed.† He smiled slightly at the look of surprise on Harry's face. â€Å"That suggests that what you fear most of all is — fear. Very wise, Harry.† Harry didn't know what to say to that, so he drank some more tea. â€Å"So you've been thinking that I didn't believe you capable of fighting the Boggart?† said Lupin shrewdly. â€Å"Well†¦yeah,† said Harry. He was suddenly feeling a lot happier. â€Å"Professor Lupin, you know the Dementors –â€Å" He was interrupted by a knock on the door. â€Å"Come in,† called Lupin. The door opened, and in came Snape. He was carrying a goblet, which was smoking faintly, and stopped at the sight of Harry, his black eyes narrowing. â€Å"Ah, Severus,† said Lupin, smiling. â€Å"Thanks very much. Could you leave it here on the desk for me?† Snape set down the smoking goblet, his eyes wandering between Harry and Lupin. â€Å"I was just showing Harry my Grindylow,† said Lupin pleasantly, pointing at the tank. â€Å"Fascinating,† said Snape, without looking at it. â€Å"You should drink that directly, Lupin.† â€Å"Yes, Yes, I will,† said Lupin. â€Å"I made an entire cauldronful,† Snape continued. â€Å"If you need more.† â€Å"I should probably have some again tomorrow. Thanks very much, Severus.† â€Å"Not at all,† said Snape, but there was a look in his eye Harry didn't like. He backed out of the room, unsmiling and watchful. Harry looked curiously at the goblet. Lupin smiled. â€Å"Professor Snape has very kindly concocted a potion for me,† he said. â€Å"I have never been much of a potion-brewer and this one is particularly complex.† He picked up the goblet and sniffed it. â€Å"Pity sugar makes it useless,† he added, taking a sip and shuddering. â€Å"Why –?† Harry began. Lupin looked at him and answered the unfinished question. â€Å"I've been feeling a bit off-color,† he said. â€Å"This potion is the only thing that helps. I am very lucky to be working alongside Professor Snape; there aren't many wizards who are up to making it.† Professor Lupin took another sip and Harry had a crazy urge to knock the goblet out of his hands. â€Å"Professor Snape's very interested in the Dark Arts,† he blurted out. â€Å"Really?† said Lupin, looking only mildly interested as he took another gulp of potion. â€Å"Some people reckon –† Harry hesitated, then plunged recklessly on, â€Å"some people reckon he'd do anything to get the Defense Against the Dark Arts job.† Lupin drained the goblet and pulled a face. â€Å"Disgusting,† he said. â€Å"Well, Harry, I'd better get back to work. See you at the feast later.† â€Å"Right,† said Harry, putting down his empty teacup. The empty goblet was still smoking. ******** â€Å"There you go,† said Ron. â€Å"We got as much as we could carry.† A shower of brilliantly colored sweets fell into Harry's lap. It was dusk, and Ron and Hermione had just turned up in the common room, pink-faced from the cold wind and looking as though they'd had the time of their lives. â€Å"Thanks,† said Harry, picking up a packet of tiny black Pepper Imps. â€Å"What's Hogsmeade like? Where did you go?† By the sound of it — everywhere. Dervish and Banges, the wizarding equipment shop, Zonko's Joke Shop, into the Three Broomsticks for foaming mugs of hot butterbeer, and many places besides. â€Å"The post office, Harry! About two hundred owls, all sitting on shelves, all color-coded depending on how fast you want your letter to get there!† â€Å"Honeydukes has got a new kind of fudge; they were giving out free samples, there's a bit, look –â€Å" â€Å"We think we saw an ogre, honestly, they get all sorts at the Three Broomsticks –â€Å" â€Å"Wish we could have brought you some butterbeer, really warms you up –â€Å" â€Å"What did you do?† said Hermione, looking anxious. â€Å"Did you get any work done?† â€Å"No,† said Harry. â€Å"Lupin made me a cup of tea in his office. And then Snape came in†¦Ã¢â‚¬  He told them all about the goblet. Ron's mouth fell open. â€Å"Lupin drank it?† he gasped. â€Å"Is he mad?† Hermione checked her watch. â€Å"We'd better go down, you know, the feast'll be starting in five minutes They hurried through the portrait hole and into the crowd, still discussing Snape. â€Å"But if he — you know –† Hermione dropped her voice, glancing nervously around, â€Å"if he was trying to — to poison Lupin — he wouldn't have done it in front of Harry.† â€Å"Yeah, maybe,† said Harry as they reached the entrance hall and crossed into the Great Hall. It had been decorated with hundreds and hundreds of candle-filled pumpkins, a cloud of fluttering live bats, and many flaming orange streamers, which were swimming lazily across the stormy ceiling like brilliant watersnakes. The food was delicious; even Hermione and Ron, who were full to bursting with Honeydukes sweets, managed second helpings of everything. Harry kept glancing at the staff table. Professor Lupin looked cheerful and as well as he ever did; he was talking animatedly to tiny little Professor Flitwick, the Charms teacher. Harry moved his eyes along the table, to the place where Snape sat. Was he imagining it, or were Snape's eyes flickering toward Lupin more often than was natural? The feast finished with an entertainment provided by the Hogwarts ghosts. They popped out of the walls and tables to do a bit of formation gliding; Nearly Headless Nick, the Gryffindor ghost, had a great success with a reenactment of his own botched beheading. It had been such a pleasant evening that Harry's good mood couldn't even be spoiled by Malfoy, who shouted through the crowd as they all left the hall, â€Å"The Dementors send their love, Potter!† Harry, Ron, and Hermione followed the rest of the Gryffindors along the usual path to Gryffindor Tower, but when they reached the corridor that ended with the portrait of the Fat Lady, they found it jammed with students. â€Å"Why isn't anyone going in?† said Ron curiously. Harry peered over the heads in front of him. The portrait seemed to be closed. â€Å"Let me through, please,† came Percy's voice, and he came bustling importantly through the crowd. â€Å"What's the holdup here? You can't all have forgotten the password — excuse me, I'm Head Boy –â€Å" And then a silence fell over the crowd, from the front first, so that a chill seemed to spread down the corridor. They heard Percy say, in a suddenly sharp voice, â€Å"Somebody get Professor Dumbledore. Quick.† People's heads turned; those at the back were standing on tiptoe. â€Å"What's going on?† said Ginny, who had just arrived. A moment later, Professor Dumbledore was there, sweeping toward the portrait; the Gryffindors squeezed together to let him through, and Harry, Ron, and Hermione moved closer to see what the trouble was. â€Å"Oh, my –† Hermione grabbed Harry's arm. The Fat Lady had vanished from her portrait, which had been slashed so viciously that strips of canvas littered the floor; great chunks of it had been torn away completely. Dumbledore took one quick look at the ruined painting and turned, his eyes somber, to see Professors McGonagall, Lupin, and Snape hurrying toward him. â€Å"We need to find her,† said Dumbledore. â€Å"Professor McGonagall, please go to Mr. Filch at once and tell him to search every painting in the castle for the Fat Lady.† â€Å"You'll be lucky!† said a cackling voice. It was Peeves the Poltergeist, bobbing over the crowd and looking delighted, as he always did, at the sight of wreckage or worry. â€Å"What do you mean, Peeves?† said Dumbledore calmly, and Peeves's grin faded a little. He didn't dare taunt Dumbledore. Instead he adopted an oily voice that was no better than his cackle. â€Å"Ashamed, Your Headship, sir. Doesn't want to be seen. She's a horrible mess. Saw her running through the landscape up on the fourth floor, sir, dodging between the trees. Crying something dreadful,† he said happily. â€Å"Poor thing.† he added unconvincingly. â€Å"Did she say who did it?† said Dumbledore quietly. â€Å"Oh yes, Professorhead,† said Peeves, with the air of one cradling a large bombshell in his arms. â€Å"He got very angry when she wouldn't let him in, you see.† Peeves flipped over and grinned at Dumbledore from between his own legs. â€Å"Nasty temper he's got, that Sirius Black.†

Indian Restaurant Case Study Essay

Porter’s five forces model will help us to determine in what ways this new venture will use it when thinking about business strategy and the impact of IT. 1. Buyer power: Buyer power is high when buyers have many choices from whom to buy, and low when there are few. As a provider of the product or services, we should always wishes to reduce buyer power. For this enterprise the buyer power will be low because there is no other Indian restaurant in that area. In addition, the enterprise will keep track of the customers who make their visit often to the restaurant through loyalties programs, number of times credit card being used etc. and it is not feasible without large –scale IT systems. 2. Supplier power: supplier power is high when buyers have few choices from whom to buy. As a customer of other supplier organizations, you want to increase your buyer power. Over here, IT plays a vital role in bringing buyer-supplier together through internet, IT-enable B2B e-marketplaces etc. For this business the supplier power will be low. We can create a competitive advantage by locating alternative supply sources for the organization. 3. Threats of substitute product or services: It is high when there are many alternatives to a product or services, and low when there are few alternatives from which to choose. Ideally, we want it to be in the organization in a market in which there are few substitutes for the products and services. In this venture if we talk about the availability of the Indian food in this area, the threat of substitute is very low. But competition can be given other fast food chains like McDonalds, Wendy’s, domino’s etc. Over here we can take the help of IT by providing fast services to our customers by the help of taking order online, drive through etc. 4. Threat of new entrants: The threat of new entrant is high when it is easy for new competitors to enter a market, and low when the entry is not easy. Over here the threat of new entrant in this particular type of business is low because it required high investment, involvement of risk in front of the other fast food chains etc. 5. Rivalry among existing competitors: It’s high when competition is fierce in the market and low when competition is more complacent. Over here there is no existing competitor as far as the Indian restaurant is concerned. But still we can get competition from other fast food chains who have already established themselves in the market. BUSINESS INTELIGENCE Business intelligence is a knowledge about your customers, competitors, business partners, competitive environment, and your internal operations that gives you the ability to make effective, important, and strategic business decisions. It is an IT applications and tools that support the business intelligence within an organization. The objective of BI is to improve the timeliness and quality of the input for decision making by helping knowledge workers to understand the a) Capabilities available in the firm. b) Trends and future directions in the markets. c) Actions of competitors and implementation of these actions. d) Economic, political, social, and regulatory environments in which the firm competes. Over here BI will help us in getting knowledge about competitors; future prospects of the business and hence will help us in efficiencies and lowering cost in internal operations of the restaurant. Through BI we can find out the business strategies which have to be implied in the future if restaurant faces a competition from other restaurant or fast food chains. It is known that BI systems provide actionable information and knowledge at the right time, in the right location, in the right form. CUSTOMER RELATIONSHIP MANAGEMENT A customer relationship management uses information about customers to gain insights into their needs, wants, and behavior in order to serve them better. Customers interact with companies in many ways, and in each interaction should be easy, and error free. It’s uncommon for a customer to change companies after having a bad experience. The goal of CRM is to limit such negative interactions and provide customers with good experiences. Its plays very important role in the industry likes food industry because once customer have a bad experience in it he will never like to come back. So we should take care of the quality of the food and good customer service. Not only this we should also take care of the other facilities which is to be provided to them like availability of the wi-fi within the premises so that they can do there work online, now over here IT plays its role. We can also provide facilities like free home deliveries, taking order online and they can book the table in advance to hold any type of gathering like graduation day, valentine day, birthdays etc. IT will help us to enhance feedback from the customer and thus meet their requirement as far as service is concerned, and they can also give suggestion to improve further. SUPPLY CHAIN MANAGEMENT Supply chain management will play very important role in this venture. IT will help us in bringing together vast network of suppliers. Over here, in restaurant business we have to take special care about the quality of materials to be used. Supply chain management will help us in tracking arrival the date of the material, expiry date of it, also help in tracking inventory and information about raw materials and their suppliers. Too many materials on hand means that too much money is tied up in inventory and also increases the risk of obsolescence, especially in the case of perishable goods. Too few materials on hand are not good either. So to avoid that situation we can use just in time (JIT) approach. It will help us in reducing holding cost. TO REACH TIPPING POINT To reach tipping point in this venture, the main focus would be on customer satisfaction and the quality of the food because customer wants value out of the money spent and it they get that value it will keep bringing them. It can be done by using differentiation strategy and IT will play major role in this. We have to do planning, implementing and controlling of the operations to satisfy customer requirement as efficiently as possible. We have to take care of the movement and storage of raw materials, in- progress inventory and all this can be done with help of IT. Staff will also play a major role in reaching to the tipping point. We will look for highly skilled and experienced staff for this. Importantly, all this would be offered to the customers at a reasonable price.

What Is the Conscience How Does “Natural Law” Work to...

REL123 August 18, 2013 Before I start anything about how what is conscience and how natural law work to inform our conscience, I will first give a little emphasis on what conscience is. According to Mueller in Theological Foundation on p.222, define conscience as something that involves several aspects of human reaction. He further explains that Conscience is a huge part of the human character that makes him or her to know and do good. He also explained further that Conscience is also a way to for us human being to determine what is good and what is evil. The second Vatican Council explained that â€Å"Conscience is the voice of God written in our hearts†. In dictionary.com, Conscience is said to be the inner sense of what is right or wrong†¦show more content†¦Whenever you do something either good or bad, after which you have finish doing that which you had done, your Conscience kicks in. How you feel about what you have done will determine the level of your Conscience. How Natural law wor ks to inform our Conscience is very paramount because it is a fact that fashion our decision on how to make or know what is right and what is wrong. In nut shell, helps us identify what is evil and good. Different scholars from different perspective explains on what we can consider to be a Natural Law. Aristotle, Plato et al sees Natural law as a moral theory of knowledge of law, which maintains that law should be based on morality and ethics. Natural Law shows that the law is based on what’s â€Å"correct.† Natural Law is â€Å"founded† by people through the ability of reason about good and evil or choosing between good and evil. Therefore, Natural Law finds its power in finding certain common acceptable standards in morality and ethics. As we all know that Aquinas wasn’t the only and the first philosopher to approach natural law; with that being said, it shows that this concept of natural law is as old as Western philosophy, so for the sake of history, let us have an idea of the scholars before him. The Sophists made a difference between laws of the State and nature, but considered the laws of nature as the higher priority over laws of the State. They said laws of the State must conform to laws of nature. InShow MoreRelatedEthical And Theological Topics On Human Morality1439 Words   |  6 Pagesthroughout his several works, Thomas’s claims on the role of the conscience in human morality presents some of the most complex and though provoking assertions. Within the Summa Theologica, Thomas not only offers a complete explanation of the human conscience and the critical role it plays within our morality, but has the ability to take the examination one step further by proposing two fundamental questions. 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