A reflux condenser was assembled using a 25-mL round-bottom flask, hot plate, and aluminum block. It was equipped with a drying tube filled with calcium chloride to control vapors. Approximately 2.5 mL of isopentyl alcohol was massed and placed in the round-bottom flask that contained a stir bar. Using the same graduated cylinder, about 3.5 mL of glacial acetic acid was added to the flask. A calibrated Pasteur pipet was used to add 0.5 mL of concentrated sulfuric acid to the flask and the flask was mixed immediately. The flask was connected to the apparatus and covered with aluminum foil to help retain heat. Using rubber tubing, water was circulated into the lower attachment and out the top attachment and the mixture was brought to a boil. After heating under reflux for 60-75 minutes, the flask was removed from the heating source and left to cool down to room temperature. The reaction mixture from the flask was transferred to a culture tube and 5-mL of water was added. Upon addition of water, careful shaking, and occasional venting, the phases separated and the lower aqueous layer was removed and discarded. Using the same procedure as explained above with water, 2.5 mL of aqueous sodium bicarbonate was added and the lower aqueous layer was again removed and discarded. The same procedure was repeated one last time with 2.5 mL of saturated aqueous sodium chloride and the lower aqueous layer was removed and discarded, leaving behind the crude ester. The crude ester was transferred to…
We placed the zinc inside the beaker and slowly poured the hydrochloric acid into the beaker. As soon as the acid entered the beaker, there was a sizzling sound and bubbles started to form as we add more of the substance in. When the bubbles were forming, we could see a steam of gas coming out of the beaker. After 10 minutes, we noticed bits of zinc were floating on top of the hydrochloric acid and lining the beaker. I lifted the beaker and felt the bottom and it felt warm, which meant the reaction was still happening. After 20 minutes, we added water into the zinc and hydrochloric acid to stop the reaction and we observed a slight cloudy colour (still clear) forming as we slowly pour the water in the beaker.…
This is one of the few experiments that has ever been completed that relates to policing. This particular experiment has never been attempted before. The Kansas City Preventative Patrol Experiment occurred during 1972 to 1973. The Kansas City Police Department in Missouri was evaluated by the Police Foundation. This experiment tested to see if the presence of police offers in marked cars would reduce crimes. This experiment produced many questions. Would people notice the police patrol and crime change? Would the visibility of the officer change crime and victim surveys? Would police satisfaction change? And would citizens being in fear of crime change? Three different areas were chosen for officers to patrol with varying times. In the first…
Wilson and Kelling were not the first to posit a link between disorder, crime, and fear of crime (e.g., Jacobs, 1961; Zimbardo, 1970; Glazer, 1979), however their broken window metaphor and the progressively popular community policing movement combined to make change more palpable to police departments looking to advance their services. The broken windows metaphor aided police administrators in understanding the relationship between disorder, crime, and the fear of crime, gave line-officer supervisors tangible tactics to employ in carrying out the theory, and spoke to those line-officers who had already been doing broken windows policing in fulfilling their day-to-day duties. Researchers variously differentiate among community policing, broken windows policing and problem-solving, and yet these concepts are often implemented in conjunction with each other. This current research traces the CPS efforts of police departments, paying special attention to their attempts at broken windows policing.…
The Bardach and Patashnik’s Eightfold Path can apply to and be an integral part of the success in hotspot policing. My department has recently utilized crime mapping to identify crime hot spot policing in reference to a rash of stolen vehicle. The usual first reaction once the hot spots are identified is to increase patrol in that area. Similar to the Kansas City Preventive Patrol Study, which concluded that the increased police presence has little effect on crime. We are now shifting, or attempting to shift, to understanding and addressing the underlying issues and the cause of the rise of criminal activity in a certain area.…
Although, it did not lead to any crime reduction it led to more public control. As for the New Jersey abandoned automobile experiment a car was left in two separate neighborhoods, one was wrecked within a few hours while the other one was left untouched for nearly a week until a window was broken. Once a window was broken, then it was deemed acceptable to destroy the rest of the car because it's established that no one cares. The foot patrol connects to the broken windows theory because it helps maintain order in the community, and creates a sense of public order to its…
Scheider states, “normal policing events are at the core of most police departments. These hobbies will not be at odds with group policing; instead, neighborhood policing calls for a quite specific perspective. Moderate modifications and alterations in perspective concerning common policing routine can make a huge contribution toward advancing the group policing philosophy and thereby develop the capability of police companies to provide fair, mighty, and effective police services”(Scheider, 2008).…
Armed robberies, violent crimes, bike patrols in crowded pedestrian areas, night-time business checks; are all parts of the reactive and proactive patrol. If police agencies adopted only one of these patrol styles. It would be harder to have police discretion. Police officer would never be able to stop crime before it happen, without reactive and proactive patrol.…
The history of policing in America is divided into three eras. The political era, the reform era, and the community problem solving era. According to Kelling and Moore the community era of policing began in the 1970’s and continues today and was brought about due to declining public support and trust of the police. The citizens needed to believe the police cared about the communities they patrolled and were not just there to do a job. Police were isolated from the community especially in areas where the population was mostly minorities and there was a great deal of mistrust between the police and the citizens which led to higher crime and social disorder rates (Kelling & Moore 1988).…
References: Hinkle, J. C. and Weisburd, D. L. (2006, Nov) "The Irony of Broken Windows: The Relationship Between Disorder, Focused Police Crackdowns and Fear of Crime" Paper presented at the annual meeting of the American Society of Criminology (ASC), Los Angeles Convention Center, Los Angeles, CA Online Retrieved 2008-04-11 from http://www.allacademic.com/meta/p125891_index.html…
Today the Chicago police force has grown to approximately 13,000 officers and has evolved tremendously since the installation of police call boxes and the fingerprinting systems. Today they utilize science with enhanced DNA testing, software and streaming videos just to name a few. The police force of today embraces technology and education turning policing into a profession. The Chicago police force emphasis’s a need for good training, discipline, and alternatives for police officers. For example, Government Technology TV shows us how loud speakers can be heard for miles so victims can be made aware of search teams. Those same speakers can also be used to hear victims. This technology can also be used to control crowds by subjecting the crowd to a frequency that hurts…
"Poor police-community relations adversely affect the ability of the police to prevent crime and apprehend criminals. People hostile to the police are not so likely to report violations of the law, even when they are the victims. They are even less likely to report suspicious persons or incidents, to testify as witnesses voluntarily, or to come forward and provide information ... . Yet citizen assistance is crucial to law enforcement agencies if the police are to solve an appreciable portion of the crimes that are committed." (Sullivan, Dunham, & Alpert, 1987).…
Civilians are supposed to trust their local police officers and not be afraid of them. That’s not the case in Chicago, the Chicago police force believes that increasing more foot patrols on high-crime rate street it will lower crimes. This action has cause the opposite and it has caused fear for the local residents. The police are starting to stop and frisk random innocent residents. Dianna, 17 year old girl, “If you ask them why you’re being stopped, they get mad. They have total power over you”(Trice). The residents are scared just to walk down the street because they know what kind of power the police have and residents know the police will violate that power. The police are not resolving the crime rate problem; the residents are not helping because they fear the police. The Chicago tribune says about this…
One of the problems that cause the public to have a lower level of good will toward police is the rising crime rate. People believe that if there are more crimes being committed, the police are not doing a proper job of stopping it. This tends to make people doubt the abilities that police have. (Koenig)Some…
Observing different block faces within an area allows the observer to conclude whether the conditions of the area play a role in the fear of crime. While observing three different block faces, one in Lakewood and two in Denver, there were different, noticeable characteristics of these neighborhoods that allowed for the assumption of fear or crime; using both qualitative and quantitative data allowed for the conclusions made. For the qualitative data, our group used different observations such as the landscape, pedestrian traffic characteristics, and characteristics of the individuals who were in that area, such as: race, gender, and age. For the quantitative data, we focused our observations more towards the physical and social disorder within…