Agree with or disagree with Article Example | Topics and Well Written Essays - 250 words

Agree with or disagree with - Article Example In fact, the World War forced thousands of American men to cross the Atlantic Ocean and take part in the overseas operations in Europe as the USA joined their allies and entered the World War II. The shortage of male workforce became a problem within the framework of the industry that produced military supplies. Thus, a growing number of women began to get employed for jobs that used to be done by men before. As a matter of fact, around nineteen million of women took over jobs that were done by men before the war burst out. Rosie the Riveter became a generalized character and a common name that embodied all the women who helped doing the jobs that women had not done before the war. One could see the image of this imaginary woman, which became the symbol of feminism in 1940s, on every second placard, poster and pinup encouraging women to get employed for mans jobs. It was a powerful marketing idea that helped to boost the economy during the war and ruined a great number of stereotypes concerning the ability of women to do mans job. Indeed, a new generation of both men and women was shaped during the WWII and Rosie the Riveter became the icon of America during the WWII. These two facts cannot be denied. As a matter of fact, the World War contributed greatly to the strengthening of the political influence of the United States within the context of the global political processes as the USA took over the leadership of a free democratic world after the war was over. There is no doubt that despite all the damage that the war inflicted on the American society, the consequences of the war implied the acquiring of a new geopolitical role of the USA in the world that ended the era of political isolation of America from Europe, which may be treated as a positive effect of the war. All in all, the price that the American society paid for the victory in the war was enormous but the economic growth of the United States during the war was the fact that cannot be denied.

The Moral Permissibility of Rendition Essay Example | Topics and Well Written Essays - 750 words

The Moral Permissibility of Rendition - Essay Example Renditions are swifter, more secretive, and more uncomplicated than legally permissible extraditions, which can be prolonged, indecisive, and politically laden (Garcia, 2010). President Bush, at a briefing in April 2005, was grilled about renditions and offered the following response (Garcia, 2010, 5): â€Å"We operate within the law and we send people to countries where they say they’re not going to torture the people.† Nevertheless, the reality is that the United States has repeatedly transported alleged terrorists to countries, such as Syria, Pakistan, Jordan, Egypt, and Saudi Arabia where charges of torture have been widespread. Many intelligence officers are very much knowledgeable of this and are aware of the decadent aspect of renditions but remain steadfast to the belief that these are a major instrument in the fight against terrorism (Olson, 2007). A contributory issue is whether it is moral to allow and to exploit intelligence recognized or thought of having b een extracted by an open state through torture. Or, more importantly, are renditions morally permissible? A legal consultant to the British administration stated that it was â€Å"not illegal to obtain and to use intelligence acquired by torture† (Olson, 2007, 70). ... In truth, it is questionable that it is the presence of an idealistic unconditional prohibition on torture that has pushed torture â€Å"beneath the radar screen of accountability, (Steiner, Alston, & Goodman, 2008, 250),† and that license to perform torture in extremely rare cases would, actually, discourage its use due to the raised degree of accountability. The unconditional ban on torture is undoubtedly one of the reasons that the United States exercises rendition, which comprises arresting, incarcerating, transferring, and interrogating alleged terrorists in countries where they cannot gain themselves the standard ban that work with regard to inhumane practices of interrogation (Steiner et al., 2008). The procedure of rendition is intolerable because it is completely unfettered, not because it is morally reprehensible. The rationale is moral necessity: critical information has to be obtained from offenders themselves. But the unconditional legal ban on torture hampers fre e and well thought-out debate on this issue. Above all, there is no proof that legalizing rendition will result in abuse of other rights where the requirements for the process are precisely defined. Moral arguments against rendition merely acquire some grip where there is proof that a process identical to that being suggested has reached outside its projected range of use after the process was legalized (Rosenbaum, 2005). According to Garcia (2010), the relevant aspects of the moral arguments for rendition are (1) the rationale for the process is benevolence; (2) it requires forfeiting a lesser motive of a particular individual to bestow a higher gain on another; (3) it is practically definite that the suspect holds the critical information; and (4)

Of Mice and Men is chiefly concerned with imprisonment and repression Essay Example for Free

Of Mice and Men is chiefly concerned with imprisonment and repression Essay How does Steinbeck present such themes within the novella? All of the characters within Steinbecks Of Mice and Men have a dream, yet this dream is unobtainable because they are trapped, inside the ranch and inside themselves. They cannot break out because of their lifestyle and their need for work and money. Lennie and George dream of having their own ranch and live off the fatta the lan' yet they hold each other back. George represses Lennie, he has become like a father to him but will not let Lennie grow up, Lennie cannot talk without Georges permission. What are you gonna say tomorrow when the boss asks you questions? Lennie, however, realises that George cares for him and he has learnt to manipulate George, If you dont want me you only jus got to say so, and Ill go off into those hills right there. Lennie makes George guilty, so that George feels that he has to stay with him. Neither will let each other go, as neither knows about life without them. George and Lennie travelling together is unusual Aint many guys travel around together and this means that they are left as outsiders. Other workers turn up alone so have to fit into ranch life and into the group but as George and Lennie are together, they become unapproachable, as other workers are confused about their friendship. After leaving Weed George and Lennie believe that they have escaped from their problems however whilst Lennie is there they can never truly escape their problems as they will just follow them from place to place The marginalised characters are repressed, because of their age, sex, or race. Curleys wife has no name; she is just the stereotypical woman. Candys dog also has no name and the two are on the same level on the ranch. Being married to Curley, she has given up her right to freedom, as at the time women were just expected to be a good wife aint I got a right to talk to nobody? Curleys wife has dreams, like the others which she can never achieve Coulda been in the movies an had nice clothes. She is trapped in the ranch she could leave but would not be able to support herself, as all she has is Curley. Curley, whilst he seems like he is in control of his life, is imprisoned within his personality. Curley is the Boss son and feels that he must live up to the Boss reputation and be an unofficial leader for the ranch workers, the fact that Slim seems to have taken this role angers him. He is married and uses this to his advantage, he has something that the others do not have and uses this to intimidate the others and show off, seems like Curley is cockier than ever since he got married. However, Curley cannot control his wife and is paranoid that she may be seeing another worker, he is looking for her throughout the text, he knows her flirtatious nature and suspects others of being with his wife. It is pointed out by others that Curley is like a lot of other little guys. He hates big guys he feels that has to prove himself, just because he is mall does not mean that he isnt strong. Curley likes to be in control and make others fear him and this holds him back, if he behaved like any of the ranch workers then it is likely that he would be accepted but he cannot change himself now. At the time of the novella, black people were discriminated against and Crooks is an example of this. He is left to live alone and we rarely see him. If Lennie had not gone into his room and spoken to him then we would have never met Crooks or learnt about him. He is never given a chance to speak or voice his opinion. The majority of the ranch workers were involved with the discussion about Candys dog but Crooks being in another room was never involved. Crooks knows being black is the reason for his isolation Cause Im black but he cant leave the ranch because he is crippled so he is imprisoned somewhere he is ignored. On a ranch where working is all there is to do Candy finds life difficult. He is the eldest and this prevents him from working and socialising. When the others are playing horseshoes Candy is not, he is talking with the other outsiders, George and Lennie, in the barn. Candy is not given chance to think or consider suggestions, during the conversation about his dog he seemed pressured into the decision. Carlson is speaking at him rather than to him and he is given very little time to form a counter argument. The town where the ranch is situated is called Soledad, which means, in Spanish, loneliness or secluded. George and Lennie have to walk miles to reach the ranch, suggesting that it is isolated. Once on the ranch workers are stuck doing the same monotonous tasks daily. Whilst workers could escape from that particular ranch, it would only be to find another. Because of the Depression, workers were stuck travelling from place to place in search of work and once they had found one place, some were reluctant to move on for fear of not being able to find any more work. Migrant workers were very low down in the social hierarchy and found it difficult to break out, as they needed the money. Steinbeck presents themes of imprisonment and repression well, with many ideas not apparent on the first read. His novella is a look at life in 1930s America and he manages to show how life was for many different types of people and shows how everyone was trapped in some way.

Energy Balance For An Internal Combustion Engine Engineering Essay

Energy Balance For An Internal Combustion Engine Engineering Essay The main objective of the experiment is to measure the energy contributions to the diesel engine, which is treated as a thermodynamics system. The energy contributions that are not measured may then be estimated from an energy balance. There are two main, unmeasured energy contributions to identify:- An energy loss from incomplete combustion, in which some of the fuel is not burned completely. An energy loss by heat transfer to the air surrounding hot engine components. Introduction A Petter four stroke diesel engine will be used to investigate the efficiency of a diesel engine. Diesel engines are  internal combustion engines  designed to convert the chemical energy available in the fuel, into mechanical energy. This mechanical energy moves the pistons up and down inside cylinders. The pistons are connected to a crankshaft, and the up-and-down motion of the pistons, known as linear motion, creates the rotary motion needed to turn the wheels of a car forward. We are already aware of the fact that internal combustion engines have very low efficiencies, but the purpose of such experiment is to study where and how the energy is used and lost. This would help us to improve the efficiency of the internal combustion engines where ever possible. Theory Both diesel engines and petrol engines convert fuel into energy through a series of small explosions or combustions. The major difference between diesel and petrol engines is the way these explosions happen. In a petrol engine, fuel is mixed with air, compressed by pistons and ignited by sparks from spark plugs. In a diesel engine, however, the air is compressed first, and then the fuel is injected, because as the air is compressed it heats up to around 400 °C, it is hot enough to ignite fuel. A four stroke diesel engine uses the following cycle (illustrated in Figure1): Intake stroke   The intake valve opens, and fresh air (containing no fuel), is drawn into the cylinder, moving the piston down. Compression stroke   As the piston rises, the air is compressed, causing its temperature to rise. At the end of the compression stroke, the air is hot enough to ignite fuel. Combustion stroke   As the piston reaches the top, fuel is injected at just the right moment and ignited, forcing the piston back down. Exhaust stroke   The piston moves back to the top, pushing out the exhaust created from the combustion out of the exhaust valve. Figure 1 24075-004-613c6f14.gif Eq1From the basic steady flow energy equation, using the air-cycle method, we may write:- The value of can be approximated, closely, to: , Cpe is taken as 1100J/KgK It is convenient to replace by in order to make an allowance for the possibility of incomplete combustion. *Where, FL, is the proportion of fuel energy that is not available because of incomplete combustion. Heat transfer, (Qr), is the sum of energy transferred to cooling water and energy lost to the surrounding from hot engine components, therefore we can write: Qr = -dot mw Cpw ( Tout Tin ) + Qrn Replacing all quantities in Eq1 we get: Symbols explained as follows: rate of heat energy transfer of system rate of the work done by the system (power) combustion air mass flow rate fuel mass rate specific enthalpy of products of combustion specific enthalpy of combustion air specific heat of water 4190 J/kgK Apparatus The Apparatus used in this experiment is mentioned as follows: Petter Diesel Engine: A four stroke, single cylinder, 659CC Petter Diesel Engine was used to conduct the experiment. Figure 2 shows the picture of Petter Diesel Engine used in the experiment. Ear Muffles: Ear muffles were used to protect the ears from the loud noise of the diesel engine; prolonged exposure to such loud noise without ear protection can lead to hearing impairment. Barometer: A Barometer was used to measure the atmospheric pressure at the time of experiment. Atmospheric pressure was needed to calculate the mass flow rate. The Barometer gives readings in mmHg. Figure 3 shows the picture of barometer used in the experiment. IMG_4763.JPGIMG_4767.JPG Figure 2 Figure 3 Experimental Procedure The purpose of this experiment was to investigate the efficiency of a diesel engine. To start with the experiment, all the gauges on the apparatus were pre set to default readings and as a safety precaution all students were provided with ear muffles. Each individual group member was assigned a task by the module lecturer. My assigned task was to measure the oil and at the same time, time the engine as it consumed the set amount of diesel. Similarly other students were given tasks, which they carried on doing as the experiment progressed. The engine was started and after waiting for the recommended time of ten minutes, all the readings were taken off gauges. A weight of 5kg was already placed onto the torque arm before starting the engine. Measurements such as fuel flow rate, cooling water flow-rate, spring balance, orifice plate pressure drop, speed gauge and electric thermometer were taken. Electric thermometer reading is divided into four parts, mentioned as follows: Exhaust temperature Cooling water inlet temperature Cooling water outlet temperature Air inlet temperature After taking all the readings, engine was shut down and ear muffles were removed. The readings taken off the gauges were then used to work out the energy balance for an internal combustion engine. Results MEASURED PROPERTY VALUE UNITS Atmospheric Pressure 764 mmHg Engine Speed 1500 rpm Spring balance reading 15 N Mass on torque arm 5 Kg Amount of Fuel measured 20 ml Time to consume fuel 97 Seconds Relative density of fuel 0.864 Orifice plate pressure drop 31 mmH2O Exhaust gas temperature 260 Degrees Celsius Cooling water inlet temperature 69 Degrees Celsius Cooling water outlet Temperature 75 Degrees Celsius Air inlet Temperature 18.5 Degrees Celsius Cooling water flow-rate 5 litres/minute Following readings were obtained from the gauges: 1. Shaft power output= torque* shaft rotational speed = W(kg load -dial reading)*rt*N(rpm)*2Ï€/60 = (5*9.81)-15*0.4*1500*2Ï€/60 = 2139.42 Watts = 6.13 10-3 kg/s 3. Fuel flow rate = = (20 10-3/1000) (864) = Kg/s 4. Heat transfer rate to the cooling water = {(l/min)/60} * 4.196* (Tout Tin) = *4.196*(75-69) = 2.098 kJ/s 5. Heat transfer to exhaust gases = (6.24 = 1.70 kJ/s 6. Energy Balance: Fuel Energy Input = mf*LCV = (1.7810-4) x (43106) = +7654W Shaft Power Output= + 2139.42W Cooling Water Heat Transfer= +2098W Exhaust Heat Transfer = +1700W Energy Transfer =Qm-mf *FL = -7654+2139.42+2098+1700 = -1716.58W Efficiency = n=useful work output fuel energy input =2139.42 x 100 7654 =27.95% (Useful Work) Energy to surroundings = (Heat supplied in fuel Useful work done Energy to coolant Energy to exhaust) = 7.66 2.14 2.10 1.68 = 1.74KW Percentage energy to coolant = Energy to coolant 100 Heat supplied in fuel = x 100 = 27.41% Percentage to exhaust = Energy to exhaust 100 Heat supplied in fuel = x 100 = 21.93% Percentage loss to the surrounding = Energy to surroundings 100 Heat supplied in fuel = x 100 = 22.71% pie chart.jpg Figure 5 Figure 4 Discussion Engine efficiency refers to an engines ability to transform the available energy from its fuel into useful work. The modern petrol combustion engine operates at an average of roughly 20 to 30 percent engine efficiency. The remaining 70 to 80 percent of the energy is lost to the surroundings in form of exhaust heat, mechanical sound energy and friction. Diesel engines are a bit more efficient. The  diesel engine  uses high compression to ignite its fuel. This higher compression compensates for the engines heat losses and results in roughly 40 percent engine efficiency. This engine efficiency is only observed by direct injection diesel engines (discussed later). Rest 60 percent energy, like the petrol engine is lost to the surroundings. The Petter diesel engine which was the subject of this experiment showed a poor overall efficiency compared to an average diesel engine. The overall efficiency of the Petter diesel engine was only 27.95 percent. The reason for such poor efficiency was that most of the energy was lost to surrounding, but that doesnt mean that the engine cannot me made more efficient. See Figure 4 and 5 for the distribution of energy lost and utilised. There are many ways to improve the efficiency of a diesel engine, some are discussed below: Turbochargers: The purpose of a turbocharger is to compress the air flowing into the diesel engine, this lets the engine squeeze more air into a cylinder and more air means that more fuel can be added; basically a turbocharger converts waste energy from an engines exhaust gases into compressed air, which it pushes into the engine. This allows the engine to burn more fuel producing more power and improves the overall efficiency of the combustion process, hence making the engine more efficient. However, the only disadvantage of a turbocharger is that, if it is in a cars engine it would take a few second to respond as the driver presses the pedal, this phenomenon is known as lag. Turbocharger suffers from lag because it takes a few moments before the exhaust gases reach a velocity that is sufficient to drive the impeller/turbine. Direct Injection: With direct injection, the diesel fuel is directly injected into the cylinder i.e. fuel is mixed with air inside the cylinder, allowing for better control over the amount of fuel used, and varies depending on demand. This makes the engine more fuel efficient. Before direct injection, the fuel was mixed with air in the cars intake manifold. Variable Valve Timing: Valves open and close to allow air and fuel to enter cylinders and for the products of combustion to exit. Different valve timings produce different results (more power and or better fuel economy). Many modern engines can vary valve timing, allowing the default low RPM range of the engine to have more economical timing, and the higher RPM range to go for max power. Cylinder Deactivation: Internal Combustion Engines, with this feature can simply deactivate some cylinders when less power is required, temporarily reducing the total volume of the engine cylinders and so burning less fuel. This feature is mostly found on V6 and V8 engines. Super Charger: Superchargers increase the intake of air into the combustion chamber. This means, more air into the combustion chamber and with more air, more fuel can be added, and more fuel means a bigger explosion and greater  horsepower. Adding a supercharger is a good way to increase the power of a normal-sized engine and thus making it more efficient. Superchargers also create better fuel efficiency by increasing the amount of oxygen available to an engines combustion chambers, because superchargers increase the power of the engine by utilising more oxygen, they do not require a larger engine and therefore also increase fuel efficiency by allowing cars to be lighter. The biggest disadvantage of superchargers however, is that they steal some of the engines horsepower. A supercharger can consume as much as 20 percent of an engines total power output but also generates as much as 46 percent additional horsepower. Since, it generates more power than it requires, it is generally th ought to be good option to increase engines efficiency. Conclusion Diesel engines are a form of Internal Combustion Engines. They are very inefficient if working on their own. Generally about 25-30 percent energy is used in work and the rest is lost to surroundings. The efficiency of a diesel engine can be enhanced by at least 10-15 percent if combined with the modern technological devices, such as turbochargers and superchargers. Other clever techniques can also be used to improve the fuel efficiency and overall engine efficiency of the engine, such as direct injection, variable valve timing and cylinder deactivation. Unfortunately, from the very beginning the focus on an internal combustion engine has been on producing more power rather than providing a better fuel economy, but nowadays due to growing awareness of environment and rising oil prices, engineers have shifted their attention on to producing more fuel efficient engines. For example, BMW is researching on ways to increase the fuel efficiency of a conventional engine by 10-15 percent by looking to  recover and reuse heat energy  lost through the exhaust and that absorbed by the engine cooling system. With such initiatives we can see a future of more efficient and more environmentally friendly engines.

Passiflora :: Botany

Passiflora The species of the genus Passiflora sp. are perennial, shallow rooted, woody vines that climb by means of tendrils (2). Many species are native to South America, primarily southern Brazil through Paraguay to northern Argentina; whereas others are of Old World origin. The Passionfruit, as this genus is commonly called, is not named as one might suppose, for some type of aphrodisiac property. Rather, the plants were given this name by early missionaries in South America on the basis that the flower resembles the different elements of Christ's crucifixion: the crown of thorns (corona); the five wounds (the five anthers); the nails of the cross (divisions of the pistil); the whips and cords (the tendril on the vine); and the spear (leaf). (2) Passionfruit yields fruit that is both sweet and tart in flavor with a light tropical fragrance. (1) It has been a popular food of the people in the Rainforests for many years, and has recently become popular in the United States and other developed countries where it is not native (4). Although there are in excess of 300 species of Passiflora, many of which produce edible fruit, there are only two species that are cultivated for industry-- P. edulis Sims and P. quadrangularis L. P. edulis has two recognized forms. The normal form is f. edulis, better known as the purple passionfruit. The purple passionfruit is slightly egg shaped, ranging in size from 1 1/2 to 2 1/2 inches in diameter that displays a characteristic purple shade when ripe (2). The yellow passionfruit displays a deep yellow shade when ripe and has an unknown origin. Speculations are that it may have been a mutation from the purple passionfruit or perhaps a hybrid between P. edulis and P. ligularis. There is a described variety of P. edulis in Australia that has a natural range of either purple or yellow fruits, leaving the chance that the yellow variety may have been a mutation from a variety such as that found in Australia (3). Common properties of the Passiflora sp. are an ovoid to nearly round shape. The rind is a tough waxy structure ranging from 1/8 to 1/4 of an inch thick. Inside the rind is a cavity with double-walled sacs, containing an orange-colored, pulpy juice as well as up to 250 very small dark brown to black edible seeds. Common growing environments include light to heavy sandy loams of medium texture at a pH of 6.

Investigation Of Reproduction And Development In Animals :: essays research papers fc

Investigation of Reproduction and Development in Animals Cycles, Conception and Contraception Fertility is the condition of being fertile. The aim of contraception is to inhibit fertility in individuals, hence, slowing population growth. The system by which all female contraception must operate: the menstrual cycle. What is the menstrual cycle? and what hormones are involved in controlling it? After puberty, the female produces an egg each month. Other changes take place on a cyclic basis including the uterus lining and hormone levels. These changes are called the menstrual cycle. Follicle stimulating hormone (FSH) from the pituitary gland stimulates the growth of follicles in the ovary. Follicles produce oestrogen that stimulates the pituitary to produce leutinising hormone (LH). As LH increases the size of the follicle increases until an egg is released. The corpus luteum formed in the follicle secretes progesterone that prepares the lining of the uterus for pregnancy. If fertilisation does not occur the lining of the uterus is discharged from the body in the process called menstruation. What is the birth control pill? The combined oral contraceptive pill (the pill) is a reversable, hormonal method of birth control. The pill consists of a mixture of two synthetic hormones similar to oestrogen and progesterone, the woman’s natural hormones which regulate the menstrual cycle. The pill is on of the most popular methods of birth control. How does it work? The pill basically prevents ovulation, therefore, the ovaries can’t release a mature egg. Without an egg for the sperm to fertilize , a woman cannot get pregnant . The hormones also increase cervical mucus, making it difficult for sperm to pass into the uterus. How effective is the pill? If used correctly, the pill is highly effective. It has a less than one percent failure rate. However, because many people misuse it, the actual failure rate is more like three percent. The pill does not provide protection against sexually transmitted diseases. How are pills used? One pill must be swallowed at the same time every day. It is not any single pill, but the day-to-day process of taking the pill which provides protection against pregnancy. What is infertility? Infertility in humans and other species(animals) is the inability to concieve or carry a pregnancy to a live birth. The causes of infertility can be identified in some cases. The majority of cases relate to female factors (50%), 40% relate to male factors and 10% aree unknown. Infertility sometimes may serve as a combination of both male and female factors. If the cause of infertility is known, treatment of some kind may be available. In other cases a problem may disappear on its own and fertility is restored.

Notes on Skinners behavioural theory

Operant condition is the condition of responses Parents have long known that children respond to a system of rewards and punishments. While to say that this is a simplification of the theories of famed American behaviourist B. F. Skinner would be an understatement, it is accurately descriptive of the most basic aspect of his beliefs. Operant behaviour and operant conditioning, Skinner's most widely acclaimed work, is based on a system of both positive and negative reinforcement.While it is commonly known that behaviour is affected by its consequences, Skinner's heory of operant conditioning further states that the process does not require repeated efforts, but is instead an immediate reaction to a familiar stimulus. Positive Reinforcement – Beginnings of the Rat & Food Experiment In an experiment with a rat using food as a reward: The rat was placed in a box Over the course of a few days, food was occasionally delivered through an automatic dispenser Before long, the rat appro ached the food tray as soon as the sound of the dispenser was heard, clearly anticipating the arrival of more foodThe Rat Experiment and Negative Reinforcement Skinner again experimented with rats to show how negative reinforcement can also strengthen behaviour. Skinner placed the rat inside the box and a sent electric current into the box, as the rat moved around the box it would knock the lever by accident and the electric current would stop. The rats soon learned that when they were placed in the box to go straight to the lever to turn off the electric current. Knowing they could escape the electric current caused the rats to repeatedly go to the lever.Not only were the rats taught to stop the electric current but also to avoid it completely. The foundations of child development – John Oates Chapter 1 pt3 Behaviorism has had a great impact on education, partly because it stresses the importance of the external world and development, and there for gives grounds for believin g that children's learning and behavior can be hugely influenced by their teachers' use ot the right methods . Behaviorist theories see human beings as machines, reacting in a predictable way to stimulation from outside them. s evelopment progresses people accumulate knowledge but there is no major change in the structure of their minds. – How Does All This Relate to Children? One of the aspects important to human behaviour, though, is the feelings associated with behaviour that is controlled by conditioning. When previous behaviours have been rewarded, children are likely to repeat those behaviours happily and willingly, feeling that they are doing what they ‘want' to be doing.If, on the other hand, children choose behaviours in order to avoid a repeat of negative reinforcement, they ay behave appropriately, but will be inclined to feel that their freedoms are being suppressed. In reality, the actual freedom still exists, of course. Children, like the rest of us, are f ree to behave in any manner that they choose, as long as they are willing to accept the consequences of their actions. Link PavloVs Dog – Stimulus conditioning Pavlov showed the existence of the unconditioned response by presenting a dog with a bowl of food and the measuring its salivary secretions.However, when Pavlov iscovered that any object or event which the dogs learnt to associate with food (such as the lab assistant) would trigger the same response, he realized that he had made an important scientific discovery, and he devoted the rest of his career to studying this type of learning. In his experiment, Pavlov used a bell as his neutral stimulus. Whenever he gave food to his dogs, he also rang a bell. After a number of repeats of this procedure, he tried the bell on its own. As you might expect the bell now, on its own, caused an increase in salivation.