Size Reduction and Screening free essay sample

Size reduction and screening The purpose of this experiment was to determine the affect of vibration rate and time on the size reduction and size separation of particles. The objective was successfully completed and the initial sample of soil was separated by vibration into finer particles with a large amount passing through the smallest diameter screen which was 0. 0278 inches producing a final product of fine soil particles which are now easier to transport and store. As can be seen from the graph below (figure 1) undersize particles verses screens, all three different vibration settings (45%, 65%, 85%) produced similar results for the screening process. At the beginning of the experiment (time zero) all of the soil sample was placed on the first screen, number 5, and after repeated screening (vibrating) the sample was broken down in more uniform sizes leaving larger pieces of soil left on the screen while smaller sizes fell through finally producing a fine powder left in the bottom pan. We will write a custom essay sample on Size Reduction and Screening or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page As can be seen from the graph below, after six minutes (the fourth bullet point on graph each bullet point represents two minutes of vibrating) the soil had mostly been sorted into its final sizes. This occurred for all three different vibration settings indicating that after a certain time period, six minutes for this particular experiment, the screening process is 90% complete and may be more cost effective to stop the process as only a small percentage is then sorted into smaller sizes. It can be seen though, that after a few minutes of screening, the original soil sample was sorted into a much more manageable sample making storage and transportation much easier. With regards to retained soil over time, again all three percentage settings produced similar results. The pan weight increased over time as more soil was broken down and this was to be expected as this is the purpose of this particular procedure. Screen 5 and 12, with the larger diameter holes contained the larger, unbreakable soil samples slowly decreased in soil being retained until only the large unbreakable matter was left. All the screens, screen number 14, 16, 20 and 25 kept a rough constant weight indicating that a certain percentage could be broken down and pass through the screens while the rest had reached its optimum broken down size. The higher vibration setting, 65% and 85% had more constant weight and this was due to the sample being vibrated at a higher setting and being broken quicker and thus settling. To conclude, from this small scale experiment alone it can be seen that size reduction and screening is a very useful and effective procedure in reducing the size of a sample making transportation cheaper and easier and taking up less storage space and in a world of cutting costs, this procedure has become vital to a number of different industries

The Gift From The Greeks Essays - Sports, Religion, Free Essays

The Gift From The Greeks Essays - Sports, Religion, Free Essays The Gift From The Greeks The Gift from the Greeks The first Olympic Games were held at Olympia, in the Peloponnes. The most famous are the games that were held in Olympia in honor of Zeus every four years from August 6th to September 19th. Olympics have been a symbol of the camaraderie and harmony possible on a global scale. The gathering of athletic representatives from participating governments, even throughout the recent Cold War period, is proof that world unity is possible. It was a gift from the Ancient Greece The Pentathlon consisted of five events; the long jump, javelin throw, discus throw, foot race, and wrestling. The Pentathlons, especially the successful ones, were often treated and even worshipped like gods. Because of their exquisite physiques, they were used as the models for statues of the Greek Gods. The superior athletic ability of these athletes affects the games even today. The twisting and throwing method of the discus throw, which originated in Ancient Greece, is still used today. The original events were even more challenging than those of today. The modern discus weighs in at just 5 pounds, one-third of the original weight, and the long jumps were done with the contestant carrying a five pound weight in each hand. The pit to be traversed in this jump allowed for a 50 foot jump, compared to just over 29 feet in our modern Olympics. Apparently, the carried weights, used correctly, could create momentum to carry the athlete further. Legend has it that one Olympian cleared t he entire pit by approximately 5 feet, breaking both legs as he landed. These legends, for all their blood, sweat, and tears, were awarded an olive branch from the tree behind the alter of Zeus when they won. Fortunately, the regions they represented were usually somewhat more grateful for bringing honor home. It was not uncommon for the victors to receive free food for life, money, or other valuable offers. They were often worshipped as gods and sometimes their sweat was preserved and sold as a magical potion. In the later years of the games, an additional event was added which signaled the end of the games and the return to the war ridden life of ancient history. Soldiers, adorned with a full body of armor weighing upwards of 50 pounds, would compete in a foot race. Unfortunately, even the apparent athletic ability of these soldiers could not prevent the fall of Greece to Rome in the middle of the second century BC. Under Roman rule, the Olympics began to lose its fervor until it was abolished in 393 AD by the Christian Roman emperor Theodosius I who most likely objected to the pagan rites associated with the Olympics. Some historians believe that even after the official abolishment of the Olympics, it may have survived for an additional 120 years. Its subsequent revival in 1896 was brought about by the discovery of the ancient stadium. Since that time, it has been held every four years, in accordance with tradition, being interrupted only for the two world wars. The competition of the nations in these events represents the age old competitive spirit of man. The need for people to take pride in something larger than themselves and feel as if they are part of a greater good. The Olympics, today as well as 3,000 years ago, offers a non-combative environment to do so.

The 7 Deadly Workplace Mistakes

The 7 Deadly Workplace Mistakes Workplace mistakes: they happen. More importantly, they happen to everyone, from the CEO down to the most junior employee. It’s just a fact of professional life. However, some workplace mistakes are worse than others. Here are seven of them that are likely within your control, and that you should avoid at all costs. 1. LyingWhether it’s a little white lie about whether or not you responded to an email or a big honking falsehood you tell to cover up a mistake, just don’t do it. Your honesty is a huge part of your workplace reputation. If you’re caught in that lie (or worse, more than one), you’ve given your bosses and colleagues a reason not to believe anything you say.2. Throwing others under the busThe workplace can be a very competitive atmosphere, especially depending on your industry. When things go wrong, it can be tempting to shift the blame to one of your coworkers, so that they get the consequences from a mistake. But really, it’s jus t poor form, and trust me- you’re not pulling it off as subtly as you might think. It might get you out of the hot seat for now, but your boss (and possibly your colleagues) will know that you’re not someone who will take deserved blame along with credit.Just about every professional evaluation survey I’ve ever seen has a question about whether the employee owns up to mistakes and handles them productively. Like dishonesty, deflective blame is something that can really damage your reputation. So when things go wrong, own up to your piece in it, and figure out how you can either help fix it, or prevent it in the future.3. Tooting your own hornThink of it as sportsmanship in the workplace. Nobody likes a bad winner, who rubs their success in everyone’s faces- especially if it comes at the expense of other team members. Feel free to do a mini-victory dance in the privacy of your own desk, but don’t send out a company-wide email announcing your good fo rtune.4. Taking credit for things you didn’t doIf you weren’t the one who stayed up all night on this project, don’t be the one who steps up to accept the laurels when credit and applause come from above. If the idea you floated in the meeting wasn’t exactly your own creation, make sure the person who did come up with it gets the credit. Don’t be like one of those comedians who get busted stealing others’ jokes†¦it’ll just undermine your support when you do have an awesome idea. No one wants to be known as the Milli Vanilli of their office.5. Throwing a tantrumIf things aren’t going your way, don’t let it cause a scene at work. Sometimes you’ll feel like screaming. Sometimes you’ll feel like having it out with a colleague who’s treating you like crap. Always, always find a way to cool off before you handle an emotionally charged situation. You can’t take back things said in anger, and you really don’t want to get a reputation around your office as someone with an unstable temper.6. Talking about how much you hate your job/company/bossOccasionally muttering, â€Å"I hate this place† under your breath at your monitor = fine. Announcing it in a meeting or in front of colleagues = not okay. Letting everyone know how unhappy you are is only going to provoke one response: â€Å"Then why are you still here?† It will also tell your boss and your company that you don’t care anymore, which can work against you when it comes to raises, promotions, etc. If you’re truly unhappy at your job, there are ways to manage that stress- not least of which is looking for a new job. You can do that without announcing your discontent, and avoid any awkwardness that might result.7. Talking about colleagues behind their backsTalking smack about someone is just never gonna end well. I promise this is just as true in the adult workplace as it ever was in high school. Best case, you may be spreading information that might not be true, or might be damaging to someone else or the company. Worst case, it gets back to the subject of the gossip, and you’ve damaged your reputation and at least one working relationship.

Knowledge of Organizational Communication Concepts and Skills Essay - 1

Knowledge of Organizational Communication Concepts and Skills - Essay Example This paper presents an analysis of each communication concepts and provides suggestions to implement it in the organization. Active listening is a very important part of communication structure. In order to build an effective business communication structure there is need to improve listening skill. This section outlines the importance of active listening and suggests ways to improve this skill. Both speaking and listening are very important part of verbal communication. Without a doubt, in any firm (small, medium or large), listening plays a significant role in effective working associations and communications among employees and between staff and administration. In the same way, this skill is also important in communicating with business customers and other organizations. The importance of listening cannot be underestimated if a business really wants to survive in this ever-increasing competitive world. In fact, listening has the power to make or break someone’s success in management, or customer relationships. Hence, improving listening skills means increasing the chances of business success (Hatter, 2013; Kati, 2011; More-For-Small-Business, 2012; Tingum, 2013). In addition, there are many important tips that can be used to improve listening skills. However, the first rule is to pay the speakers full attention and try to keep eye contact. In this scenario, the speaker can be a colleague, an employee, customer or management. Additionally, when they have completed this process, put another way their words and confirm whether you understand them in the approved manner. If you have any confusion then keep continue asking questions to increase understanding of their speech. Actually, listening cautiously while someone speaks to you can improve the quality of business communication. However, in order to improve listening power there is a need for effective concentration, which can only be attained with endeavor and practice. Without a

Project Managment Scheduling queastion Essay Example | Topics and Well Written Essays - 2000 words

Project Managment Scheduling queastion - Essay Example The expected time for an activity represents the average time it would take if the activity is performed over and over again. It is known empirically that the probability density function of activity duration closely follows a Beta distribution, which defines the following relationship (Heldman & Baca, 267) Standard Deviation is used for calculating the variability associated with the high degree of uncertainty in estimated time durations. The standard deviation is represented by sigma symbol ‘ÏÆ'’ and is calculated as The time analysis elements such as the forward pass (Early Start time ES and Early Finish time EF) and the Backward Pass (Late Start time LS and Late Finish time LF) are used to find the Critical Path. These times are calculated using the Expected Time (te) for the respective activity relative to the zero date (date when the project clock starts ticking) of the project. The Backward Pass Late Start (LS) and Late Finish (LF) values are calculated considering that the earliest completion time of the project for the last activity and then working backwards towards the predecessors. For all the last activities, the LF will be equal to the respective EF value. Therefore, values of LF for the activities O, N, M, I and C are equal to the respective values of EF. The Critical Path can be determined by finding the Total Slack for each activity. Total Slack for any activity is the maximum time by which the start of an activity can be delayed without affecting the critical path. The path with the longest Expected time duration is the critical path. Activities on the critical path have slack as 0, since these activities cannot be delayed at all. Each path from the Start to the Finish node is defined along with the respective time duration. The Expected Completion Time (Et) for each path is equal to the expected duration of the constituent activities. For Example, A-E-H-K-I is calculated

Essay on Women in Iliad, Odyssey, and the Bible -- comparison compare

Role of Women in Iliad, Odyssey, and the Bible Much is known of men in ancient civilizations, from the famous philosophers and mathematicians of Greece to the patriarchs and subsequent kings of the nation of Israel. It would seem, however, that history has forgotten the women of these times. What of the famous female thinkers of Ancient Greece, the distinguished stateswomen of Rome? What power did they hold? What was their position in societies of the distant past? A glimpse into the roles and influence of women in antiquity can be discovered in such ancient masterpieces as the Iliad, the Odyssey, and the Hebrew Bible. In the Iliad, women are barely mentioned, and then only as spoils of war or treacherous creatures not worthy of a man's trust. The two main Argive heroes, Achilles and Agamemnon, the brightest and best of the Greeks, enslave captured women to keep as personal prostitutes, passing them around and dividing them among each other as if the women were no different from the rest of the booty they have won in battle. Agamemnon says of Chryseis, the girl he has claimed for himself, "[. . .] The girl-I won't give up the girl. Long before that, / old age will overtake her in my house, in Argos, / far from her fatherland, slaving back and forth / at the loom, forced to share my bed!"(Homer , book 2, 33-36). Indeed, these two paragons of Greek virtue talk and act as if these women are not truly people; Achilles may have a fit when Agamemnon tries to lay claim to his prize, Briseis, but more from a sense of being cheated out of his share in the loot that any real compassion for the girl or her si tuation. Helen, a prominent figure in the fable of the Trojan War, has barely a cameo in this version of the Iliad, and he... ... sons and to be obedient, but occasionally, some women were not content with this one purpose in life. Throughout history, we have a few examples of extraordinary women who held power and influence, such as Hetshepsut, the first female pharaoh of Egypt, and Cleopatra, who managed to snag two notable Roman generals. A sense of women's resorting to indirect means to obtain power can be seen in these works of the ancient world, of women's exerting influence perhaps through the men they marry or the positions they hold, if not outwardly of power, then at least with some chance of gaining it. Works Cited Homer. Iliad. Mack 1: 98-208. -----. Odyssey. Mack 1: 208-540. The Inspirational Study Bible. Ed. Max Lucado. Dallas: World Publishing, 1995. Mack, Maynard, et al. eds. The Norton Anthology of World Masterpieces. 6th ed. 2 Vols. New   York: Norton, 1992. Essay on Women in Iliad, Odyssey, and the Bible -- comparison compare Role of Women in Iliad, Odyssey, and the Bible Much is known of men in ancient civilizations, from the famous philosophers and mathematicians of Greece to the patriarchs and subsequent kings of the nation of Israel. It would seem, however, that history has forgotten the women of these times. What of the famous female thinkers of Ancient Greece, the distinguished stateswomen of Rome? What power did they hold? What was their position in societies of the distant past? A glimpse into the roles and influence of women in antiquity can be discovered in such ancient masterpieces as the Iliad, the Odyssey, and the Hebrew Bible. In the Iliad, women are barely mentioned, and then only as spoils of war or treacherous creatures not worthy of a man's trust. The two main Argive heroes, Achilles and Agamemnon, the brightest and best of the Greeks, enslave captured women to keep as personal prostitutes, passing them around and dividing them among each other as if the women were no different from the rest of the booty they have won in battle. Agamemnon says of Chryseis, the girl he has claimed for himself, "[. . .] The girl-I won't give up the girl. Long before that, / old age will overtake her in my house, in Argos, / far from her fatherland, slaving back and forth / at the loom, forced to share my bed!"(Homer , book 2, 33-36). Indeed, these two paragons of Greek virtue talk and act as if these women are not truly people; Achilles may have a fit when Agamemnon tries to lay claim to his prize, Briseis, but more from a sense of being cheated out of his share in the loot that any real compassion for the girl or her si tuation. Helen, a prominent figure in the fable of the Trojan War, has barely a cameo in this version of the Iliad, and he... ... sons and to be obedient, but occasionally, some women were not content with this one purpose in life. Throughout history, we have a few examples of extraordinary women who held power and influence, such as Hetshepsut, the first female pharaoh of Egypt, and Cleopatra, who managed to snag two notable Roman generals. A sense of women's resorting to indirect means to obtain power can be seen in these works of the ancient world, of women's exerting influence perhaps through the men they marry or the positions they hold, if not outwardly of power, then at least with some chance of gaining it. Works Cited Homer. Iliad. Mack 1: 98-208. -----. Odyssey. Mack 1: 208-540. The Inspirational Study Bible. Ed. Max Lucado. Dallas: World Publishing, 1995. Mack, Maynard, et al. eds. The Norton Anthology of World Masterpieces. 6th ed. 2 Vols. New   York: Norton, 1992.

London by William Blake and Composed upon Westminster Bridge bt William Wordsworth Essay

The Revolution in France coincided with the aftermath of the Industrial Revolution of England. During this period the rich became richer, the poor became even poorer, and major towns or cities became over crowded. The thoughts and feelings of the people living throughout the country at this time, often were expressed in poetic form. Two such poems set around the same time and both set in London are â€Å"London†, by William Blake and William Wordsworth’s â€Å"Composed Upon Westminster Bridge.† â€Å"London† is written nine years before â€Å"Composed Upon Westminster Bridge†, and tells of the suffering of the people of London. A uniform and exact feeling is sensed in the opening two lines of the poem, as both streets and the Thames are described as being â€Å"chartered† and something which is chartered is very exact and has a definite and set outline. The next two lines ending the first stanza tell of weakness and woe in every face Blake meets, meaning there is sadness and regret along with vulnerability sensed by him as he passes people along his journey. The first two lines of the second stanza read of the cry of both men and infants. The reason why infants cry is because they cannot say what is hurting or annoying them. Therefore we are led to realise that the suffering felt by the adults of London or of ‘Man’ as it were, is so intense that even they cannot verbalise it and so they cry out. Ending the second stanza we read that the poet hears â€Å"mind-forg’d manacles†. These are forms of fears, enforced into the minds of people, holding them back from doing or saying certain things. We are told these fears are found â€Å"in every person’s voice, in every ban†, meaning that these common fears are sensed by the poet, in every person he encounters. The opening lines of the third stanza again tells of crying and also now of admonition. In this case the chimney-sweeper’s cry is heard. In those days chimney-sweepers were young children forced to go out to work by their families. They did very difficult and pain staking work for very little money – it shows their pain and suffering in doing so. Condemnation comes from the church. The religious leaders are appalled at the fact of this, yet the poet describes the church as â€Å"blackening†, giving us the impression of an unpleasant ‘refuge’ which turns a blind eye on the suffering of the sweeps. The closing two lines of the third stanza reads of a â€Å"hapless soldier’s sigh run in blood down the Palace walls.† This conveys to us that the hopelessness felt by soldiers is stemming from the fact that their welfare is not considered by those in charge. The soldier is sent to war by a ruler who cares little for him. The first three lines of the final stanza tells us that the majority of noise heard comes from â€Å"youthful Harlot’s curses/ [which] blasts the new born Infant’s tear†. This means that a lot of the noise heard during the night comes from young prostitutes shouting at young babies to be quiet because they are crying. An uncomfortable and unsettling mix is created through the contrast of these young women who sell their bodies for sex, yelling at young, fearful and unadulterated infants. The final line is an ominous one containing the statement â€Å"And blights with plagues the Marriage hearse†. The fact that we are told of how the prostitutes are â€Å"blighting† with â€Å"plagues† the â€Å"Marriage hearse† is significant – Marriage usually means a life just starting out with someone else, this contrasts with a hearse which carries coffins and so is usually linked with death and hence symbolises the end of a life. The curse and words associated with disease give us a sense that sexually transmitted diseases are quickly spreading and they are readily killing all of society. Overall Blake takes a negative and strict viewing point of London which echoes the great suffering of the day. Another poem, set in London and written just nine years after â€Å"London† offers a contrasting tone to Blake’s. It is William Wordsworth’s â€Å"Composed Upon Westminster Bridge†. â€Å"Composed Upon Westminster Bridge† is a similar poem to â€Å"London† as the poet is the one travelling through the London it describes, yet the poems contrast greatly. Wordsworth opens with an emphatic statement, praising London as he says it surpasses anything on the earth. In the second and third line Wordsworth makes the statement: â€Å"Dull would he be of soul who could pass by/A sight so touching in its majesty:† which means one would have to be ‘dead inside’ if he/she couldn’t appreciate such beauty. The fact that Wordsworth uses the word â€Å"majesty† offers a regal sense, a regal beauty – giving us the idea of just how grand and magnificent this city actually is. This contrasts well with the disease ridden city described by Blake, using such words as plague and blight, giving the city an altogether unsettling atmosphere. In the fourth line Wordsworth starts out by giving the word â€Å"City† a capital letter, which stresses just how important the city actually is. Wordsworth then goes on to tell us how â€Å"like a garment [it] wears/The beauty of the morning†. Like a garment is a simile, and in this case Wordsworth uses clothing imagery to convey to us his point. The fact that he links this with the beauty of the morning suggests to us that this beauty â€Å"fits well† with the city. The ending of the fifth line flows into the sixth line and tells of a silent beauty of all of the man made things found in a city. A complete contrast to this, are the two references made by Blake of â€Å"Man’s† creations telling us of â€Å"black’ning† churches and blood-stained Palaces. A disturbing and unpleasant contrast to the silent beauty implied by Wordsworth. The next line tells of how these buildings merge seamlessly with nature; â€Å"Open unto the fields, and to the sky;† As this links directly with the previous line of the silent beauty of the city’s buildings, Wordsworth is connecting man and Nature; the city is at one with Nature’s wanders, at one with God. Blake makes no reference linking both man and Nature, in fact we are given but one reference to nature and that is of the â€Å"chartered Thames†, due to the fact of this we can only infer that Blake is trying communicate to us in fact the great over industrialised ‘hell’ London really is, and just how much Nature has been destroyed in order to create this city. Wordsworth ends this section by telling us in line eight of the scene as â€Å"All bright and glittering in the smokeless air.† conveying to us Wordsworth’s thoughts that London is very clean, very sparkling, beautiful and new. . In lines nine and ten Wordsworth makes another emphatic statement, literally exclaiming that at no other time has the sun, not even since creation, made the landscape more beautiful than currently in London. â€Å"Ne’er saw I, never felt, a calm so deep!† shows of Wordsworth’s great surprise of just how beautiful London is. He cannot believe what he’s seeing and so is very moved. This again differentiates with Blake’s views on London. He tells of a common fear sensed within all people he met, that they are ill at ease and afraid to go freely around this ‘great’ city. Which can only mean that London may not have been this great and calm city described by Wordsworth. The last lines in the poem are descriptive of the landscape and line twelve sees Wordsworth expressing the freedom felt by Nature: â€Å"The river glideth at his own sweet will†. This contrasts greatly with the limits and restraints conveyed to us through the description of the Thames as being â€Å"chartered†. Suggesting to us the restraints put upon Nature, immobilising it from flourishing due to man’s greed for industry and money. Wordsworth ends his poem exclaiming that it is so quiet and tranquil that even the houses â€Å"seem asleep†. The last line of the poem sets up London as being the ‘heart’ of Great Britain, London is the thing which enables Great Britain to work correctly: â€Å"And all that mighty heart is lying still.† We really sense Wordsworth’s surprise at finding this essential life force so still and at rest. This is the complete opposite to Blake’s bustling, overcrowded and disease ridden city. The nights are filled with young â€Å"harlot’s† swearing at screaming babies, while they’re out trying to earn a bit of money from sell in themselves for sex while. And all the time aiding to the destruction of society due to the spreading of disease. On the whole, undoubtedly my favourite poem is William Blake’s â€Å"London†. I feel Blake’s poem far surpasses Wordsworth’s as Blake offers to us a more realistic and altogether poignant atmosphere to Wordsworth’s happy and â€Å"perfect† city. I feel that his use of language and style of writing expresses well the perception of London during the course of industrialisation as being an overpopulated and disease ridden â€Å"hell†.