The resistance in a piece of wire Essay Example for Free

The resistance in a piece of wire Essay Also if the atoms in the material are more closely packed then the electrons will have more frequent collisions and the resistance will increase. I will use Nichrome only. 4 Density of wire- In a higher density wire there will be a higher resistance because there will be more fixed ions and more collisions. 5 Temperature of wire- If the wire is heated up the atoms in the wire will start to vibrate because of their increase in energy. This causes more collisions between the electrons and the atoms as the atoms are moving into the path of the electrons. This increase in collisions means that there will be an increase in resistance. 6 Shape of wire- the wire will be straight and taped to a meter rule, the shape of the wire may increase the resistance. 7 Voltage of 2 volts- I will have to keep a constant voltage because if the voltage changes then the resistance will change. The equation for resistance = voltage / current. If voltage increases, resistance increases. Apparatus The apparatus I will need to perform this experiment will be: 1 Power pack (2volts) 2 Ammeter 3 Voltmeter 4 6 wires 5 2 crocodile clips 6 Meter rule 7 Masking tape 8 Board marker Circuit diagram Method I have chosen to take a range of 10 lengths. I have chosen a range of 10 as to plot an accurate graph I will need at least 10 points to mark on the graph. The lengths that I have chosen are as follows: 10cm, 20cm, 30cm, 40 cm, 50cm, 60cm, 70cm, 80cm, 90cm and 100cm. I have chosen these lengths because the meter ruler can easily measure them and enough results to make a firm conclusion. To change the length of the Nichrome wire during the experiment I will tape down 1 meter of Nichrome 32 swg wire to a meter rule. I will then connect the 2 crocodile clips different distances apart using the measurements on the meter rule. The wire will be attached at X in the circuit. In my experiment I will find the current in the circuit using an ammeter and I will find the voltage in the wire using a voltmeter. I will take these two readings so I can then calculate the resistance using the equation resistance = voltage / current. I want to make my experiment as accurate as possible so I want to produce repeat readings so that I can find an average resistance. I will be using a variable resistor in my experiment to produce these repeat readings. I will draw 4 equally spaced points on the variable resistor with a board marker. To get my repeat readings I will move the variable resistor to these 4 points and get four readings for each length. After I have found the average resistance for each length of wire I will produce a graph showing the average resistance against the length of the wire. I will draw on my graph a line of best fit and then from this I will be able to see if my prediction was correct and if the resistance does increase when the length of wire increases. 1. Set up a circuit as shown above. Set the power pack at a constant voltage of 2 volts. 2. At X in the circuit the wire will be placed. I will first connect the crocodile clips 100cm apart. Then turn the voltmeter and ammeter on and ensure the variable resistor is set at the first point. 3. Now turn on the power pack and record the first results shown on the ammeter and voltmeter. I must take the first results because the results may change due to overheating if the power pack is left on. Now turn off the power pack. 4. To take my repeat reading of 100cm I will then move the slider on the variable resistor to the second marked point. I will now turn on the power pack and record the first result shown on the ammeter and voltmeter. 5. I will continue taking my repeat readings and moving the variable resistor along and recording the results for 100cm. 6. I will then change the length of wire to 90cm by moving the crocodile clips and i will set the variable resistor at the first point. Then I will turn on the power pack and record the first set of results. I will take 4 repeat readings for each length of Nichrome wire. 7. I will record 4 repeat readings for each length of Nichrome wire until I have results for all 10 lengths. Results table Length (cm) Repeat number Voltage (volts) Current (amps) Resistance (? ) Average 17. 82 I have put in bold any anomalous results. Analysing and considering evidence Conclusion From my graph I can tell that my prediction was correct. As the length increases the resistance increases, a piece of 20cm wire has a resistance of 3.8 ? and a piece of 30cm wire has a resistance of 5. 6 ?. This is because a longer piece of wire has a higher resistance because in a longer piece of wire there are more collisions between the electrons and the metal ions. In every successful collision energy is lost from the electron to the wire ions. The result is that the voltage of the wire increases. Because the equation for resistance is resistance = voltage / current, the resistance then increases. From my line of best I can also tell that as the length doubles the resistance always almost doubles too. A piece of 20cm wire has a resistance of 3.8 ? and a piece of 40cm wire has a resistance of 7. 4 ?. Double 3. 8 ? is 7. 6 ? this is almost double but not quite probably because my experiment was not quite accurate. A piece of wire 30cm long had a resistance of 5. 6 ? and a piece of wire 60cm long has a resistance of 11. 1 ?. This is also almost double, double 5. 6 ? is 11. 2 ?. The resistance doubles as the length doubles because there can be double the amount of successful collisions so double the amount of energy is lost causing the voltage to double and so the resistance doubles. Key Electron Metal ion Predicted results Length (cm)Predicted resistance ( ? ) Actual resistance ( ? ) Difference ( ? ) 1All of my results were quite close to my predicted results but as the length increases my predicted resistances become less accurate. This could have been for several reasons that are mentioned in my evaluation but probably as my experiment went on the wire overheated so my results became less accurate. Evaluating My method of collecting my results worked quite well. I gained the results I expected from my experiment. The quality of my evidence was good. My line of best fit went through almost all of my points on my graph and was quite similar to my predicted line of best. I did have some anomalous results. When I experimented with 10cm of Nichrome wire my fourth repeat readings was quite different to the other readings. It had a resistance 0. 87 ? that was the lowest repeat readings for 10cm. The second lowest was 1. 80 ? , this is quite a lot more than the anomalous result. When investigating which 30cm of Nichrome wire I had another anomalous result that was 6. 48 ? , the third repeat reading. This was the biggest repeat reading. The second largest was only 5. 89 ?. This could have been because:   I left the power pack on too long. This causes the wire to overheat.   When I was measuring the lengths of the Nichrome wire my measurements might have been slightly inaccurate. The rulers used might not have been exact and it was difficult to get an accurate reading of length by eye as the wire was not completely straight. Also the ruler may have been of different thicknesses throughout the length. This would have contributed as a slight error in my results.   The ammeter and voltmeter could have been slightly faulty and not given me correct, accurate readings. I connected the wire into the circuit using crocodile clips. These were quite loose and so this could have made my results less accurate. If I improved my method I could either attach the wires with tape but this may affect my results so instead I could solder the Nichrome wire into my circuit. It was difficult to adjust the variable resistor slider accurately only by eye. If I did the investigation again I could try to and adjust the variable resistor accurately I will use an advanced digital variable resistor.   I also found it difficult to measure exact lengths against the meter rule because the crocodile clips didnt clip on to the wire very securely. If I did the investigation again I could pre cut all the lengths of wire before the experiment instead of just connecting the crocodile clips at different distances apart on the meter rule. To further my investigation I could use the same method but increase the range of lengths. I could use lengths of up to 3 meters. I could take readings from lengths at smaller intervals; I could take reading every 5cm instead of every 10cm as I did. I could also take more repeat readings to get a even more accurate average. Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

Presentation of War in Literature | The Man He Killed and Dulce Er Decorum Est

Presentation of War in Literature | The Man He Killed and Dulce Er Decorum Est The Man He Killed by Thomas Hardy (1840-1928), and Dulce et Decorum est, by Wilfred Owen explore the theme of war, they both take similar views on life during and after the treacherous times that war created, and its lasting effects. However, the poets choose to display these feelings through their poetry in different ways. In Hardys poem, the poet adopts the person of a war veteran in the Boer war. The poem is about his actions in this war and their lasting effects. In Dulce Decorum est, the poet prefers to take a step back, he is not as directly involved as Hardy, yet he continues to get his message across very effectively by describing the horrors he witnessed. Though the poems were written in different wars the messages they portray are very similar as the poems do not divulge into the actual wars they were based on, but, instead on the inner dynamics of war on a whole. Wilfred Owen is known as being one of the most famous poets of the First World War. He wrote Dulce et Decorum Est while he served as a soldier in the appalling conditions of the trenches. Dulce et Decorum Est gives a distressing account of the futility of war, generated from his own personal experiences. It was composed during the summer of 1917 when Owen wrote a series of poems about the war. The preface to this collection was My subject is War, and the pity of War. This shows Owens view to war and his purpose for writing the poems was to show the disgusting horror that war created to an ill-informed and uneducated audience back at home in England. Though the war made Owen famous it ultimately led to his demise a year later. The Man He Killed by Thomas Hardy was written to express Hardys beliefs. Hardy felt that war was inhuman, he despised the heartlessness atrocity between men. The poem is specifically addressed to the Boer War, which Hardy was passionately against. The poem may seem very simple at first but in fact it is a very skilful one, it is hampered with irony and Hardy makes interesting use of colloquialism (writing in a conversational style). Hardy titled the poem The Man He Killed, in the third person. However, the poem is narrated in the first person. The person in the poem, the he in the title and I in the poem, is clearly a soldier of the Boer war attempting to explain and perhaps clarify the reasons to kill another man in battle. The short lines, simple rhyme scheme, and colloquial language make the poem almost like pleasant nursery rhyme as it is so simple and easy to read, however, this is an ironic contrast to its less than pleasant subject. In Dulce et decorum est, Owen is showing how the press and public at home were comforting themselves in the belief that all the young men dying in the war were dying noble, heroic deaths. Owen on the other hand, shows how the reality was quite different; the young men were dieing horrible and obscene deaths in the trenches. I believe that Owen wanted to open the eyes of the reader to what was really going on in the war to illustrate how vile and inhumane war really is. The first line sets the tone for the rest of the poem Bent double, like old beggars under sacks. He uses the simile like old beggars to show how the average soldier was not being treated nobly or with respect but like someone the lowest class (a beggar). It also shows how the young, vibrant boys who signed up had the life taken out of them by the war and were becoming old well before it was their time. This put the reader in the right frame of mind about the war, it casts out any false pretences they had about the war and opens their eyes to the inhumane truth war created. He uses bitter imagery like coughing like hags and But limped on, blood shod. All went lame; all blind; Drunk with fatigue to show how these apparent youthful and strong men had been broken by the war and become prematurely old and weakened. Owen takes pity on these tired and weary soldiers as he describes them in the most unglamorous, inglorious manner. Similarly, in The Man He Killed, Hardy also banishes a common misconception about war, that killing a man was a dignified and noble thing to do. In the first stanza Hardy establishes that things could have been different in more favourable circumstances between him and his foe: Had he and I but met they could have had a drink together By some old ancient inn. However, in the second stanza, Hardy shows the true circumstances in which they did meet, which is in stark contrast to the first stanza. Ranged as infantry Hardy once again reemphasises the point that the men are not natural foes but have been ranged, which means that they have been set against each other by someone elses decision. The phrase as he at me indicates they are both in similar situations. This tells the reader how your foe may have been your friend in indifferent circumstances but because someone higher has said they are your enemy means you must kill them, in essence you must banish your own moral and personal view s on the person you are about to kill because someone has told you, falsely, it is your duty to kill them. Like Owen, Hardy takes pity on the soldiers, as it is not their fault, as he shows it is kill or be killed in war. In The Man He Killed, Hardy also exhibits the dark side of man, especially his capacity for violence and cruelty. He does this in the last stanza where concludes with a repetition of the contrast between his treatment of the man he killed and how he might have shared hospitality with him in other circumstances, Youd treat, if met where any bar is, or even been ready to extend charity to him Or help to half a crown. Before this he says that war is quaint and curious, as if to say war was is bit of a harmless puzzle. This may give the impression that war is undamaging and acceptable, but as the reader now knows from the events described in the poem and the knowledge he already has of war, make it clear that Hardy applies this phrase quaint and curious with great irony, knowing full well that this statement is far from the truth. It forces the reader, through Hardys irony, to divulge deeper into the ethics behind war and the brutality and inhumanity it creates, and to consider how human s are often victims of sheer circumstance and fate, which has lead them to take another persons life. Hardy has very cleverly through colloquial language and simple statements, made the reader think as though they have made a judgment of whether war is right or wrong on their own, when really Hardy has inconspicuously made that decision for them. Furthermore, Owen also shows how war has changed man into a killing beast. He concentrates on the use of mustard gas, a new devastating weapon used in the First World war. If inhaled without the protection of a mask, the gas quickly burns away the lining of the respiratory system. Owen shows this as he compares the soldier who has breathed in the toxic fumes with a man consumed in fire or lime. When you have breathed in the fumes, it is of often compared with drowning, as mustard gas effectively drowns people in the blood from their own lung tissues. Owen then skilfully uses a metaphor to tie into the drowning theme as he says As under a green sea, I saw him drowning. This was because Mustard gas had a green colour, he calls it a sea to show how it was impossible to get away from. Owen continues this aquatic theme as he views this floundring man as if through an underwater mask, Dim through the misty panes. This gives the impression that Owen was unable to fully access the situation through his gas mask, there is also a helplessness felt by Owen as there is nothing he can do, which adds to the surreal and nightmarish atmosphere of the poem, in all my dreams, before my helpless sight. This dream then becomes a harsh reality as the guttering, choking soldier plunges at the helpless speaker, seeking help, in an effort to escape his inevitable death, Owen uses triple emphasis to engrave this astringent image in the readers head. Owen can do nothing for the man; there is still a feeling of responsibility and guilt. This vivid imagery creates a bleak image in the readers mind, Owen is trying to make them question whether the suffering and torture created by war is really worth it. His despair at war and the loss of morals it results in are shown in phrase sores on innocent tongues, as Owen realizes that this soldier, though he is fighting in a war, is innocent and there was no reason for him to die in this way. Owen then uses alliteration to further emphasize the inh umanities man does to man by describing the soldiers slow death, he repeats initial consonant sounds in closely related words wagon, watch, white, writhing. Owen then continues to use bitter imagery combined with similes such as, Like a devils sick of sin to describe the soldiers dying face. This exceptionally dramatic imagery creates a lasting and distressing impression on the reader, as Owen reveals the true horrors that go on during times of war. In The Man He Killed, Hardy illustrates that the reason for killing a man because they are your foe is not good enough. This is shown in the third stanza. The colloquial style Hardy uses enables him to repeat the word because, when he is trying to justify the reason for killing the man, implying hesitation, and therefore doubt as he doesnt know why he killed him. He uses repetition of my foe and the of course this also shows that there is an element of doubt as the speaker tries to convince himself of his justification for the killing. Hardy has already made it clear that the men fighting each other because of an artificial hostility created by others. He adds at the end of the stanza Thats clear enough which is obviously ironic, as the reason for killing is far from clear to the reader because of the reasons above. The last word of the stanza although ultimately destroys the whole entire believability of the reason he has just given. I believe the main point of this poem is to show that there is never a good enough reason to kill another man. Hardy shows this through illustrating how these men would have been friends if they had met under different circumstances yet because someone has said they were there enemy this was a good enough reason to take the other persons life, thus showing how war is a pointless and frivolous act. On the other hand, in Dulce et Decorum est, Owen in not against the reasons why soldiers are killing each other but the fact that these young, innocent and possibly naive men were signing up based on the belief that it is sweet and fitting to die for your country (which is Dulce et decorum est the title of the poem in Latin). At the end of the last stanza, Owen sums up the poem. Owen speaks directly to reader calling the reader my friend, this draws the reader into the poem. He says you would not tell with such high zest, to say directly to the reader that if they had witnessed the horror that he had witnessed then the readers attitude towards the war would change. Therefore, the reader would not repeat patriotic slogans to make people sign up, To children ardent for some desperate glory. The title of the poem Dulce et decorum est is used with a certain sense of irony as the poem is all about how it is not sweet and fitting to die for your country. However, Owen abandons this irony a nd just says The old Lie, showing how more soldiers will die in the circumstances of the fallen soldier in this poem, if the reader continues to spread that lie to young men who have been blinded by this sense of patriotic duty to their country. The final line brings about the full chilling effect of the poem Pro patria mori: to die for ones country. Owen shows how people are signing up to the war on lies like Dulce et decorum est, however, this is far from the truth as nobody deserves to suffer the fate of the fallen soldier in the poem for their country. Within Dulce et Decorum Est the poet utilises a variety of powerful poetic devices in order to depict death in war as a brutal and horrifying experience. It is through the use of this simile that the poet arouses the sympathy of the responder as they witness the grotesque nature of such a death. In Dulce et Decorum est Owen masterfully uses a variety of potent poetic devices to depict the horrifying nature of death in a war to stimulate a response from the reader. He uses metaphors and similes to provoke sympathy for the people who were dying in the war, as the reader witnesses the grotesque death of the soldier who died in the poem. By doing this Owen portrays his message in a very bold and tasteful way. In The Man He Killed Hardy uses a colloquial style of writing combined with an ABAB rhyme scheme, this makes the poem very easy to read and long lasting. Hardy uses slang to get the reader involved in the poem, this allows Hardy to make a strong point in highlighting the irony behind how war can turn friend into foe simply by association and sway the reader against war. Both poems are against war and the reasons and ethics behind them. Though Hardy uses a more direct approach to get his point across, both poems successfully complete the objective that the poets had for them , which was to open the readers eyes to the true reality of war.

What Is A Crime Scene Investigation

What Is A Crime Scene Investigation The roles and duties of police officers as first responders crime scene investigators as truth seekers are very important. Actions taken at the beginning of an investigation at a crime scene play a vital role in solving a case. Careful and thorough investigation is the key to ensure that potential physical evidence is not tainted or destroyed or potential witnesses are not overlooked (Reno, 2000). An important factor influencing the ultimate legal significance of evidence is that investigators follow an objective, thorough, and thoughtful approach. The goal of this process is to recognize and preserve physical evidence that will yield reliable information to aid in the investigation. Three main components of an investigation are: physical evidence, interviewing and interrogation (Summerfield, 2005). Key words: Police officers, investigations, potential evidence, physical evidence, crime scene, truth seekers, roles, duties, Fourth Amendment Rights What Is A Crime Scene Investigation? A crime scene investigation is an examination of the scene of a crime for any clues or evidence that may lead police to a suspect. One can think of a crime scene as a piece of history. The crime scene has a story to tell. The evidence can retell the story with the right approach to investigating the crime scene. Crime scene investigation is a slow and hardworking process, but the methodology that requires perfect care also tends to reveal important clues to the method, motive and suspect of the crime. CSI investigators combine law enforcement tactics with scientific knowledge in their work, and the way investigators do their jobs plays a big part in whether or not the police capture a suspect (Vaux, 2011). A crime scene is the beginning point of a successful or unsuccessful investigation. The main objectives of a crime scene are to preserve and collect relevant information and any physical evidence that will make a connection between all parties involved. The first responders dispatc hed to the scene of a crime are usually the only people who get to view the crime scene immediately after the crime took place, at its original state. The end result of the investigation is to ensure that justice is served (Thomas, 2011). Crime scene investigation consists of analyzing the scene of a specific crime in order to determine what happened and provide clues as to the identity of the suspect. Several basic considerations come into play when managing a crime scene effectively. They carefully and systematically examined a crime scene to learn how and when the crime was committed, who committed it and why, and perhaps what items may have been removed from the scene. Each investigation of a crime scene is different. The differences depend on where the crime is committed, how big the crime is, and the area of the crime. A number of procedures take place at a crime scene. While others depend upon the nature of the scene and the circumstances surrounding the crime, there are spec ific procedures that are always done. Crimes could be discovered by a witness who sees a crime in progress and reports it to the police, a victim of the crime reports it to the police or the police discover the crime in progress. Police discovering the crime in progress is also known as a sting operation. These are situations where law enforcement agents set up a scenario and criminals are encouraged to commit crimes (Vaux, 2011). Once the investigation Officers has gathered all the information possible from a crime scene, they may release it. After release, people can go back to using the site as they normally would. The site may require specialized cleanup to remove dangerous substances, along with the unsavory reminders of a crime, such as the smell of a decomposing body or damage caused by a fire (Smith, 2003). Roles and Duties of Police Officers as First Responders The certified first responder (CFR) profession was developed to address the lag between the time an accident happens and the arrival of an emergency medical technician, such as a paramedic. Many certified first responders are trained firefighters, lifeguards, athletic trainers, police officers or park rangers (Thomas, 2011). Police Officers as first responders crime scene investigators and as truth seekers are the starting point of a crime scene investigation. Important information is discovered and collected to help solve the crime and seek the truth that surrounds the crime. The crime scene investigator at the scene first, gets an understanding of what the investigation will entail, and construct a plan of action for locating and gathering evidence. Every crime scene is different; however, the crime scene investigator has to make sure that all physical evidence is located and collected in a proper manner, record all pertinent information, secures the scene from contamination, and g oes over what he or she thinks took place, and how and why it happened (Siegel, 2009). At a crime scene, the first responders other than onlookers are usually police officers, emergency medical technicians and depending on the situation, the fire department. The first responders dispatched to the scene of the crime are usually the ones who get to view the crime scene immediately after the crime first happened and at its original state. To get an accurate account and successful resolution in a criminal investigation, first responders at a crime scene must maintain the links that connect the suspect to the victim and the crime scene (Thomas, 2011). Ensure Safety The first duty of the police officer as first responders is to ensure safety. As the first to arrive on the scene, they must make make sure that the victim or victims are safe, out of danger, and provided with the proper medical care. They also have to make sure the paramedics responding to the crime scene will treat the victim and take them to a nearby hospital for treatment if necessary. Another important duty is to separate the witness so that they can tell their stories without influencing each other (Cox, 2011). It is a very important duty for the police officer to secure the crime scene area so that no unauthorized persons can come in and interfere with the investigation. Crime scene security perimeter measures has to be established by securing the crime scene area as soon as possible with barrier tape, police vehicles or other means to preserve the evidence and make sure that crime scene does not get contaminated (Thomas, 2011). Interview Victims and Witnesses Interviewing is one of the duties that give the investigating Officer the opportunity to get evidence and testimony that will help establish facts, identify potential suspects and potentially provide corroboration. Conduct a preliminary interview with onlookers and the victim, if possible, to determine if anyone can identify the person who committed the crime. At this time the attending officer will obtain a physical description of the suspect and ask the victim to explain what happened to the best of their ability. Interviewing is divided into two viewpoints, witness and victim. Both interviews have some common elements, but with differences based on on the individual circumstances. The interview should be conducted as near to the time of the crime as possible. The witness should be able to tell what happened without being interrupted. The victim should be interviewed with sensitivity and on a professional level (Summerfield, 2005). Manage the Area An officer is assigned as the crime scene security officer. He will keep a log of names of personnel entering and leaving the crime scene. Anyone entering the crime scene can contaminate the evidence that could possibly link the suspect to the crime scene, so accurate documentation and evidence preservation is essential (Thomas, 2011). Apprehend the Suspect While on duty, Police Officers will look for the person who committed the crime at the scene and make an arrest if the suspect is still in the vicinity of the crime. They want to ensure that all responsible parties are held responsible for their actions. Suspects who are arrested for the crimes are usually booked into jail or cited and release (Hickey, 2003). Detain All Witnesses and Onlookers Collecting valuable information in the investigation, by interviewing people at the crime scene, is a duty that could help in apprehending the suspect. Witnesses usually have important information about the suspect and about what actually happened. Sometime the credibility may be an issue in some cases with the information given; but victims and suspects physical evidence in such a case will be very useful in connecting any missing link in the investigation (Thomas, 2011). Document the Scene The responding Officer should used methods which consist of written notes which will be used in constructing a final report, crime scene photographs, and a diagram or sketch. The goal of the documentation is to create a visual record that will allow forensics lab and the prosecuting attorneys to recreate an accurate view of the scene. There should be a great consistency between each of these functions. Each method is important in the process of properly documenting the crime scene. The notes and reports should be done in a chronological order and should not include opinions, analysis, or conclusions. Just the facts! The crime scene investigator should document only what they see, not what they think. The final report should tell a descriptive story. A general description of the crime scene should be given just as the investigator sees it when they do the initial walk through of the scene (Byrd, 2000). Collect and Preserve Evidence Once the crime scene has been thoroughly documented by the investigating Officer and the locations of the evidence noted, and then the collection process can begin. The collection process usually starts with the collection of the most fragile or most easily lost evidence. Special consideration can also be given to any evidence or objects which need to be moved. Collection can continue along the crime scene trail or in some other logical manner. Photographs should also continue to be taken if the investigator is revealing layers of evidence which were not previously documented because they were hidden from sight (Schiro, 2011). Each type of evidence has a specific value in the investigation. The value of evidence should be kept in consideration when doing a crime scene investigation. It is also wise to collect more evidence at a crime scene than not to collect enough evidence. The most should be made at the crime scene, since an investigator has only one shot (Schiro, 2011). The reaso ns for the evidence collection is to organize the evidence that the investigator recovered from the scene, where the items where recovered from, and what part of the lab that the items were directed to (Byrd, 2011). Report to the Leading Crime Scene Investigator This particular duty call for all events that took place, any adjustments or alterations made to the crime scene and all movements in and out the crime scene perimeter will be documented. Lack of accurate information, omissions, negligence, under or overemphasis in information can severely damage the investigation and the outcome for a successful conclusion. An accurate account of what happened, without any addition or deletion is very important when communicating with the leading investigator (Thomas, 2011). The Fourth Amendment Rights The Fourth Amendment plays a very important role when it comes to individual rights. The most important word in the evaluation of The Fourth Amendment is the word warrant. The Amendment states: à ¢Ã¢â€š ¬Ã…“The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seizedà ¢Ã¢â€š ¬Ã‚ , (Scalia, 2007). According to the Fourth Amendment of the United States Constitution, the elements are the 1.Oath or Affirmation made 2. Probable cause determined 3. Specific warrant issued and 4.The actual Search, arrest, seizure, and detainment. The order of these elements is important! 1 and 2 should happen before 3, and 3 before 4. Properly conducted, a crime scene search can reveal evidence that allows investigators to reconstruct t he crime and identify the perpetrator. Lawfully conducted, a crime scene search can aid in the successful prosecution of those responsible. To lawfully conduct a crime scene search, however, investigators must be extremely careful to follow the dictates of The Fourth Amendment (Crawford, 1999). Because officers under the intense stress and pressure of a crime scene may overlook the contents of The Fourth Amendment, law enforcement agencies should reinforce the need for warrants through policy. The fact that a crime was committed on the scene generally provides the requisite probable cause for obtaining a search warrant. Moreover, forensic technicians and crime scene analysts can assist in meeting the particularity requirement of The Fourth Amendment by supplying a list of likely items of evidence to include on the warrant application. By developing policies that emphasize the need for warrants, law enforcement agencies can substantially increase the likelihood of successful prosecut ions (Crawford, 1999). Officers can also search and seize objects on a person if the officer has placed the person under arrest. This exception extends to situations in which the police in good-faith mistakenly arrest the wrong suspect and seize contraband during the search. If a suspect, either during traffic stop or otherwise, makes a furtive gesture, the gesture justifies a limited warrantless police intrusion (Wheatly, 2007). When Police Officer obtain a warrant before conducting a search, the warrant must comply with the Fourth Amendment before evidence from the search will be admissible in court. A warrant may be defective if it is not supported by probable cause that is established by a detailed, sworn statement made by a law enforcement officer appearing before a magistrate (Fairlex, 2011). Conclusion Police officers as first responders require considerable knowledge. They have a great responsibility when being the first person on a crime scene. They have to make sure that the victims are safe and the suspect is apprehended, and that each of their Constitutional Rights are in place. Processing a crime scene is a very lengthy and thorough process. Investigators will spend hours, and sometimes days, documenting the crime scene and its condition and collecting all the physical evidence that is present in an attempt to discover what crime was committed and who committed it. All crime scenes, bodies of evidence and investigative techniques are unique in their own right. The Criminal Justice System wants to convict the guilty, while protecting the innocent. As with any element of our society it is essential that we have in place some system for validating conclusions and assumptions to ensure fairness and justice are preserved. Even our system of government has seen the wisdom in a syst em of checks and balances to ensure no single force can dominate without a consensus. Our law enforcement investigative process should do no less. By ensuring all elements of an investigation are fully explored and considered, this can be achieved (McFadden, D.).

My Philosophy of Teaching Essay -- Graduate College Admissions Essays

My Philosophy of Teaching    As an undergraduate, I was a teaching assistant for several psychology courses, including introductory psychology, behavioral statistics and research methods. My first teaching experience was as a Teaching Assistant for statistics; I now believe that this is where my individual teaching philosophy began taking shape.    As a teaching assistant for behavioral statistics, I was exposed to the student's outlook on the material, in which a lack of enthusiasm for statistics was undoubtedly portrayed. The message was clear: seemingly uninteresting and inapplicable material equals uninterested students. The students that I assisted did not believe that this material would clearly impact their lives; they did not see a meaning or purpose in comprehending or learning the material aside from dutifully collecting a grade at the end of the semester.    Even as an undergraduate student, I was saddened by the lack of enthusiasm by other students for learning a topic that I felt could benefit everyone. Since that time, I have slowly develop...

picasso :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  Pablo Picasso , known as one of the most influential artists of the twentieth century . I shall explore the evolution of a young Pablo Ruiz Picasso to the experienced genius that had shaped the way we see art today . From his Blue and Rose periods through the birth of Cubism , to the struggles of the experimental thirties . As we go to the death of a proud father .   Ã‚  Ã‚  Ã‚  Ã‚  Picasso was born in Malaga on the 25th of October 1881 . The only children of the family were Pablo and his younger sister . As you know Spaniards take the name of one’s father and of one’s mother . The name Ruiz was his father’s . His mother’s was Picasso . His birth name is Pablo Ruiz Picasso . Since its such a long name its a pain to sign so he shortened it . On Pablo’s earlier canvases he signed Pablo Ruiz but later changed his name to who we know of now , Pablo Picasso . Picasso is of Italian origin and the Picasso were silversmiths . Physically Pablo resembles his mother , small and robust with a vigorous body , dark-skinned , straight not very fine black hair . Picasso used to always say that his father was like an English-man . His father , Josà © Ruiz Blasco was tall and had reddish hair and an English way of carrying himself .   Ã‚  Ã‚  Ã‚  Ã‚  As a child Picasso was making drawings , not the drawings of a child would have but one a painter would have painted . When he was fifteen years old he would make oil portraits of his younger sister . He painted like a born painter . Then at age nineteen Picasso was off to Paris . Two months later he went back to Barcelona sold some paintings . Picasso settled in Madrid and starts the magazine â€Å" Arte Joven â€Å" with the writer Francisco de Assis Saler. Soon after Picasso goes back to Barcelona and then back to Paris again . Picasso had friends but none of where painters , no they were all writers .   Ã‚  Ã‚  Ã‚  Ã‚  In 1902 Picasso returned to Spain and painting in his Blue period . Being in away from Spain for a while he forgot how colorless it is . The colors of Spain are white , black , silver and gold yet it was still beautiful . Span in a sense is not like other southern countries ,

Practical Demonkeeping Chapter 33-34

33 RIVERA During the drive to Pine Cove, Rivera was nagged by the idea that he had forgotten something. It wasn't that he hadn't reported where he was going; he had planned that. Until he had physical evidence that there was a serial killer in the area, he wasn't saying a word. But when he knocked on the Elliotts' front door and it swung open, he suddenly remembered that his bullet-proof vest was hanging in his locker back at the station. He called into the house and waited for an answer. None came. Only cops and vampires have to have an invitation to enter, he thought. But there is probable cause. The part of his mind that functioned like a district attorney kicked in. â€Å"So, Sergeant Rivera,† the lawyer said, â€Å"you entered a private residence based on a computer data base that could have been no more than a mailing list?† â€Å"I believed that Effrom Elliott's name on the list represented a clear and present danger to a private citizen, so I entered the residence.† Rivera drew his revolver and held it in his right hand while he held his badge out in his left. â€Å"Mr. and Mrs. Elliott, this is Sergeant Rivera from the Sheriff's Department. I'm coming in the house.† He moved from room to room announcing his presence before he entered. The bedroom door was closed. He saw the splintered bullet hole in the door and felt his adrenaline surge. Should he call for backup? The D.A. said: â€Å"And so you entered the house on what basis?† Rivera came through the door low and rolled. He lay for a moment on the floor of the empty room, feeling stupid. What now? He couldn't call in and report a bullet hole in a residence that he had probably entered illegally, especially when he hadn't reported that he was in Pine Cove in the first place. One step at a time, he told himself. Rivera returned to his unmarked car and reported that he was in Pine Cove. â€Å"Sergeant Rivera,† the dispatcher said, â€Å"there is a message for you from Technical Sergeant Nailsworth. He said to tell you that Robert Masterson is married to the granddaughter of Effrom Elliott. He said he doesn't know what it means, but he thought you should know.† It meant that he had to find Robert Masterson. He acknowledged the message and signed off. Fifteen minutes later he was at The Breeze's trailer. The old pickup was gone and no one answered the door. He radioed the station and requested a direct patch to the Spider. â€Å"Nailgun, can you get me Masterson's wife's home address? He gave the trailer as residence when we brought him in. And give me the place where she works.† â€Å"Hold on, it'll be just a second for her address.† Rivera lit a cigarette while he waited. Before he took the second drag, Nailsworth came back with the address and the shortest route from Rivera's location. â€Å"It will take a little longer for the employer. I have to access the Social Security files.† â€Å"How long?† â€Å"Five, maybe ten minutes.† â€Å"I'm on my way to the house. Maybe I won't need it.† â€Å"Rivera, there was a fire call at that address this morning. That mean anything to you?† â€Å"Nothing means anything to me anymore, Nailsworth.† Five minutes later Rivera pulled up in front of Jenny's house. Everything was covered with a gummy gray goo, a mix of ashes, flour, and water from the fire hoses. As Rivera climbed out of the car, Nailsworth called back. â€Å"Jennifer Masterson is currently employed at H.P.'s Cafe, off Cypress in Pine Cove. You want the phone number?† â€Å"No,† Rivera said. â€Å"If she's not here, I'll go over there. It's just a few doors down from my next stop.† â€Å"You need anything else?† Nailsworth sounded as if he was holding something back. â€Å"No,† Rivera said. â€Å"I'll call if I do.† â€Å"Rivera, don't forget about that other matter.† â€Å"What matter?† â€Å"Roxanne. Check on her for me.† â€Å"As soon as I can, Nailsworth.† Rivera threw the radio mike onto the passenger seat. As he walked up to the house, he heard someone come on the radio singing a chorus to the song â€Å"Roxanne† in a horrible falsetto. Nailsworth had shown his weakness over an open frequency, and now, Rivera knew, the whole department would ride the fat man's humiliation into the ground. When this was over, Rivera promised himself, he would concoct a story to vindicate the Spider's pride. He owed him that. Of course, that depended on Rivera vindicating himself. The walk to the door covered his shoes with gray goo. He waited for an answer and returned to the car, cursing in Spanish, his shoes converted to dough balls. He didn't get out of the car at H.P.'s Cafe. It was obvious from the darkened windows that no one was inside. His last chance was the Head of the Slug Saloon. If Masterson wasn't there, he was out of leads, and he would have to report what he knew, or, what was more embarrassing, what he didn't know, to the captain. Rivera found a parking place in front of the Slug behind Robert's truck, and after taking a few minutes to get his right shoe unstuck from the gas pedal, he went in. 34 U-PICK-EM The Pagan Vegetarians for Peace called them the Sacred Caves because they believed that the caves had once been used by Ohlone Indians for religious ceremonies. This, in fact, was not true, for the Ohlone had avoided the caves as much as possible due to the huge population of bats that lived there, bats that were inextricably locked into the destiny of the caves. The first human occupation of the caves came in the 1960s, when a down-and-out farmer named Homer Styles decided to use the damp interior of the caves to cultivate mushrooms. Homer started his business with five hundred wooden crates of the sort used for carting soda bottles, and a half-gallon carton of mail-order mushroom spores; total investment: sixteen dollars. Homer had stolen the crates from behind the Thrifty-Mart, a few at a time, over the period of weeks that it took him to read the pamphlet Fungus for Fun and Profit, put out by the U.S. Department of Agriculture. After filling the crates with moist peat and laying them out on the cave floor, Homer spread his spores and waited for the money to roll in. What Homer didn't figure on was the rapid growth rate of the mushrooms (he'd skipped that part of the pamphlet), and within days he found himself sitting in a cave full of mushrooms with no market and no money to pay for help in harvesting. The solution to Homer's problem came from another government pamphlet entitled The Consumer-Harvested Farm, which had come, by mistake, in the same envelope with Fungus for Fun. Homer took his last ten dollars and placed an ad in the local paper: Mushrooms, $.50 lb. U-PICK-EM, your container. Old Creek Road. 9?C5 daily. Mushroom-hungry Pine Covers came in droves. As fast as the mushrooms were harvested, they grew back, and the money rolled in. Homer spent his first profits on a generator and a string of lights for the caves, figuring that by extending his business hours into the evening, his profits would grow in proportion. It would have been a sound business move had the bats not decided to rear their furry heads in protest. During the day the bats had been content to hang out on the roof of the cave while Homer ran his business below. But on the first night of Homer's extended hours when the bats woke to find their home invaded by harshly lit mushroom pickers, their tolerance ended. There were twenty customers in the caves when the lights went on. In an instant the air above them was a maelstrom of screeching, furry, flying rodents. In the rush to exit, one woman fell and broke a hip and another was bitten on the hand while extracting a bat from her hair. The cloud of bats soon disappeared into the night, only to be replaced the next day by an equally dense cloud of landbound vermin: personal-injury lawyers. The varmints prevailed in court. Homer's business was destroyed, and once again the bats slept in peace. A depressed Homer Styles went on a binge in the Head of the Slug. He spent four days in an Irish whiskey haze before his money ran out and Mavis Sand sent him to an Alcoholics Anonymous meeting. (Mavis could tell when a man had hit bottom, and she felt no need to pump a dry well.) Homer found himself in the meeting room of the First National Bank, telling his story. It happened that at that same meeting a young surfer who called himself The Breeze was working off a court-ordered sentence he had earned by drunkenly crashing a '62 Volkswagen into a police cruiser and promptly puking on the arresting officer's shoes. The farmer's story touched off an entrepreneurial spark in the surfer, and after the meeting The Breeze cornered Homer with a proposition. â€Å"Homer, how would you like to make some heavy bread growing magic mushrooms?† The next day the farmer and the surfer were hauling bags of manure into the caves, spreading it over the peat, and scattering a completely different type of spore. According to The Breeze their crop would sell for ten to twenty dollars an ounce instead of the fifty cents a pound that Homer received for his last crop. Homer was enraptured with the possibility of becoming rich. And he would have, if not for the bats. As the day of their first harvest neared, The Breeze had to take his leave of their plantation to serve the weekend in the county jail (the first of fifty – the judge had not been amused at having barf-covered police shoes presented as evidence in his courtroom). Before he left, The Breeze assured Homer that he would return Monday to help with the drying and marketing of the mushrooms. In the meantime, the woman who had been bitten during the debacle of the bats, came down with rabies. County animal-control agents were ordered to the caves to destroy the bat colony. When the agents arrived, they found Homer Styles crouched over a tray of psychedelic mushrooms. The agents offered Homer the option of walking away and leaving the mushrooms, but Homer refused, so they radioed the sheriff. Homer was led away in handcuffs, the animal-control agents left with their pockets filled with mushrooms, and the bats were left alone. When The Breeze was released on Monday, he found himself in search of a new scam. A few months later, while incarcerated at the state prison in Lompoc, Homer Styles received a letter from The Breeze. The letter was covered with a fine yellow powder and read: â€Å"Sorry about your bust. Hope we can bury the hatchet.† Homer buried the letter in a shoe box he kept under his bunk and spent the next ten years living in relative luxury on the profits he made from selling psychedelic mushrooms to the other inmates. Homer sampled his crop only once, then swore off mushrooms for life when he hallucinated that he was drowning in a sea of bats.

Emily Bronte’s “Wuthering Heights” Essay

The story of Heathcliff, the sadistic protagonist of Emily Bronte’s â€Å"Wuthering Heights† is so upset that Edgar Linton does not want his lovely daughter, Cathy, to hear it. Heathcliff and Cathy, two prominent characters in the novel, interact in the second half of the novel. Heathcliff’s passages reveal that the tortured character comes about from a childhood without the care of parents (33) while Cathy’s goodness (164) reflects her being raised by a loving father. The different supervision each character experienced while growing up is reflected by their behavior, showing that nurture is a greater factor over one’s personality than nature. Beginning her description of Heathcliff with the lowly word â€Å"degradation†, Nelly, the narrator, tells Lockwood how Heathcliff and Catherine (the mother of Cathy) grow more reckless daily without parental guidance. Nelly recalls these events right before Catherine is injured and stays at Thrushcross Grange for five weeks. Nelly also said that Heathcliff and Catherine â€Å"promised†¦ to grow up rude as savages.† The punishments the two received from Joseph and the Curate, Nelly notes, haven’t helped her increase the â€Å"small power† she holds over the two, due to the lack of parental guidance. It is also important to note some of the foreshadowing that occurs here: Heathcliff’s return alone in the rain foreshadows his demise. His lack of respect for the church also symbolizes his lack of will and later on immense greediness. Bronte’s genius shines throughout this passage, mixing savagery, love, symbolism, and foreshadowing all in o ne page. Nelly’s description of Cathy is spoken on a very positive note, including many of the same devices seen in Heathcliff’s passage. She says that Cathy has not seen or even heard of any bad deeds except for her â€Å"slight acts of disobedience†, and that Cathy is â€Å"amazed at the blackness of spirit† of Heathcliff. Nelly describes Cathy as a sheltered, gentle, book-loving young daughter of Edgar. In addition, Cathy is said to be extremely well mannered within this section. Edgar tries to protect his daughter from having to know about an evil soul such as Heathcliff, attempting to prevent the malicious outside force from corrupting her personality. The passage even contains Cathy crying over the miseries of someone she has only met twice so far. She also has a pretty convincing argument as to why she should meet Linton  again, foreshadowing her disobedience of her father by going to meet Linton, her only companion outside of Thrushcross Grange. This disobedience will be the main factor in her future encounters with Heathcliff. Cathy’s extreme kindness and Heathcliff’s great roughness contrast very well. Heathcliff’s description shows him as a wild, undisciplined being. Cathy, on the other hand, is portrayed as a very nice, helpful daughter and a devoted friend to Linton. Heathcliff’s lack of education (Catherine being his only educator) also differs from Cathy’s â€Å"lessons for a couple of hours† that she has. Heathcliff’s vow to â€Å"grow up as rude [as a savage]† is far from Cathy’s melancholy over not being able to meet Linton again. There is not much that is similar between the two characters, due to both of them being on opposite ends of the spectrum. This lack of similarities is what makes these two characters interesting to follow throughout the novel. The language in these passages is quite interesting. Nelly uses much harsher language in the passage with Heathcliff than the passage with Cathy, representing the behavior of the two characters. The paces of the narratives also differs, with Heathcliff’s being a more intense rate than Cathy’s, also due to their contrasting actions. Another interesting thing to note is the use of the word naughty. Both passages employ this word, showing a mild form of being disobedient, which cannot be explained by any other means other than just saying that the both have the same author and narrator: Emily Bronte and Nelly Dean, respectively. Also, as seen throughout the book, an unusal amount of referrals to doors are present, most likely to show frames within the framed narrative. Studying these two passages against each other brings one to a deeper meaning than reading each one separately. Nelly’s descriptions of Heathcliff and Cathy shows that nurture predominates over nature. Cathy, the mix between the peaceful Edgar Linton and the wild Catherine Earnshaw, shows only her positive traits, due to the fact that she was brought up by Edgar alone. Heathcliff, an orphan brought home by Mr. Earnshaw, has had his good qualities disappear through a process which Nelly calls â€Å"degradation;† because he was raised up with Hindley, who constantly thought of Heathcliff as an â€Å"other.† These two characters are so  dramatically different, even though they were both blessed with good looks and intelligence. One might argue, however, that because Bronte does not give the origins of Heathcliff, he might be born of a family with a tendency to be selfish and greedy. This idea can be countered, though, because Heathcliff was said to have â€Å"bore his degradation pretty well at first†, a quality that not many natural tyrants can boast of. Also, the fact that Cathy is the daughter of Catherine and yet shows few of the violent characteristics of her mother tells us that genes play no, or very little, role in how she behaves.