Twitch Muscle Fibers Essays

Twitch Muscle Fibers Essays Twitch Muscle Fibers Paper Twitch Muscle Fibers Paper muscle contraction Introduction For a skeletal muscle fiber to contract, a stimulus must be applied to it. The stimulus is delivered by a nerve cell, or neuron. A neuron has a threadlike process called and axon that my run 91 cm or more to a muscle. A bundle of such fibers from man different neurons composes a nerve. A neuron that stimulates muscle tissue is called a motor neuron. The motor neuron branches into terminal structures called telodendria that come into close approximation with a portion of the sarcolemma o a muscle fiber (muscle cell). The site where the neuron and muscle fiber meet is called a neuromuscular junction. At this junction the muscle fiber membrane is specialized to form a motor end plate. The sensitivity of a muscle fiber to electrical stimulation through the skin surface is largely a function of the proximity of a neuromuscular junction, the thickness of the skin, and variations in skin conductivity. An electrical stimulus that causes a muscle twitch at one spot may have no effect on muscle fibers that are only a centimeter away. Specific spots on the skin where minimal electrical stimuli cause muscle twitching are called motor points. The purpose of this exercise is to identify specific spots on the skin where these motor points are located. If the electrical stimulus is close enough to pain receptors (naked nerve endings) in the skin, one may experience a slight pricking sensation as the stimulus is applied. Since the skin has many of these pain receptors, this sensation is often experienced; however, a muscle twitch may or may not be produced simultaneously with the pricking sensation. Our intent will be to concentrate on the identification of motor points. Muscles are made up of functional units called motor units. Each motor unit consists of a neuron which supplies one or more muscle fibers. When a motor unit is stimulated, its muscular component will contract with all of the orce they (it) can generate, or they (it) are not contracting at all / in a given muscle there are many motor units, these units vary in their level of irritability. Tat is some will respond to a weak stimulus, while others may require a much stronger stimulus. Often the smaller units are less irritable than the larger units, therefore we often have better control when the task requires only slight strength, and we have much poorer control when greater strength is needed. The overall strength of a contraction of a muscle is the summation of the pull of the motor units operating at any one time. There are two types of summation, spatial and temporal. An increase in the strength of the overall muscle contraction due to spatial summation is brought about by increasing the strength of a stimulus which increases the number of motor units that are operating. Remember that the muscle fibers that are contracting are doing so with all of their strength. Temporal summation is brought about by increasing the rate of stimulus so that the same muscle fibers are contracting again before they have had a chance to completely relax. Each individual fiber can contract more powerfully when the stimuli arrive close together in this fashion, then it can contract in a single twitch. This may at first seem to violate the all or nothing principle. The explanation for temporal summation involves the elastic properties of muscles. Tension developed is translated through many structures. It is transmitted from the cross bridges through thick and thin filaments, across Z lines, extracellular connective tissue, muscle and bone. Each of these components has a certain amount of elasticity. Only when all of these elastic structures are taut can increasing contraction by the muscle occur. When a second stimulus occurs very close to the first the elastic structures are not yet slack and the result is the contraction is stronger than any simple muscle twitch. Temporal summation will not be studied at this time. Human muscle can be directly stimulated through the skin using a relatively strong stimulus. When stimulating skeletal muscles in this way, certain sensitive spots can be located that elicit a much greater response. These spots are called motor points. Motor points are usually located directly over the area where the nerve supplying the muscle being stimulated enters the muscles, often the belly of the muscle. IN the first part of this exercise, we will study the motor points of the hand using the isolated square wave stimulator. In the second part of this exercise we will use the Physiogrip system to study the details of a single muscle twitch which can be separated into three phases; the latent period, the period of contracting, and the period of relaxation. Refer to Chapter 10 for details of muscle physiology. We will establish the minimal or threshold stimulus required to cause your flexor pollicis brevis or flexor digitorum muscle to contract, and see the consequences of increasing the stimulus strength which increases the force of contraction due solely to spatial summation. The flexor pollicis brevis is located at the base of the thumb, if flexes and adducts the thumb, and it is innervated by the median and ulnar nerve. The flexor digitorum superficialis is located on the inside of the forearm, and while not a deep muscle, it is beneath the palmaris longus, flexor carpi radialis, pronator teres and the brachioradialis. The flexor digitorum superficialis flexes first the middle and then the proximal phalanges. This muscle is involved only in rapid, forceful flexion of the digits in grasping movements; it is not at all involved with gentle, unresisted flexion. The flexor digitorum superficialis is innervated by the muscular branch of the median nerve. The third part of this exercise will involve further analysis of the simple muscle twitch and the knee jerk reflex using the Flexicomp program. Using a transducer attached to your knee the physiology of the knee jerk reflex (an example of a monosynaptic reflex arc) will be studied. Procedure Introduction: Each experiment (motor points of the hand, Physiogrip, and Flexicomp) will be performed by the same groups of 3 students. One member will be the subject, a second will be the stimulator or apparatus operator, and the third member will be the recorder. Subject Preparation: For each procedure there will be a considerable amount of preparation. Take notes while your instructor discusses each procedure. For determining the motor points of the hand, use the abrasive pad, detergent and paper towels (or Kleenex) to thoroughly clean your hand. The superficial layers of the stratum corneum and excessive skin oils must be removed to obtain proper conductivity. Remove rings which will interfere with identification of motor points. After the skin is completely dried position the subject’s arm in a relaxed manner on the table, with palm up. Electrode gel will be applied to the areas to be tested (hand and forearm) to improve conductivity. The Physiogrip procedure involves attaching a flat electrode (with electrode gel) to the back of the hand while probing for the motor point of the flexor pollicis brevis or flexor digitorum superficialis muscles. The Flexicomp procedure involves attaching a knee jerk transducer to the knee and then properly calibrating it using onscreen directions and the help or your instructor. Stimulators: Your instructor will discuss the stimulators. Take notes. The electrical stimuli to be applied to the skin will be minimal, or threshold, must sufficient to elcit a response. The threshold stimulus is governed by duration and voltage. If the duration is too short, more voltage is required. Before starting each experiment make sure the stimulator voltage is zero. As the voltage is increased in 5-volt increments, a point will be reached when a muscle twitch will occur, or the subject will indicate a sensation of minor pain. If a twitch occurs, you have reached the minimum voltage or threshold for muscle stimulation. Stimulation process: For determining the motor points of the hand, outline your hand in the report section and record the minimum voltage required to elicit a twitch for each spot. Continue to increase the voltage and to probe the hand until 2 or more motor points have been identified or until the stimulation process becomes uncomfortable. For the Physiogrip procedure, locate the motor point for the flexor pollicis brevis or other flexor muscles of the hand muscle. Follow the onscreen directions of the computer to determine muscle twitch information. Your instructor will help you select the proper responses. For the Flexicomp a modified patellar hammer will be used to stimulate the knee. When you tap the patellar ligament a simultaneous signal will be sent to the computer. Your instructor will show you how to print out and evaluate the simple muscle twitch obtained using the Flexicomp equipment. Detailed Setup for the Physiogrip Procedure: . Put a small amount of electrode gel on the flat electrode and strap the electrode to the back of your right or left wrist. The wrist area should be cleaned with alcohol prior to attachment of the electrode. Put a small amount of electrode gel on the front of the wrist. This gel will be spread around with the stimulus electrode as you search for the flexor digitorum superficialis mo tor point. 2. Grasp the pistol grip and apply enough pressure on the trigger to lift the screen plot off the bottom of the screen. 3. Your lab instructor will show you how to analyze and print out your data. Staple your Physiogrip and Flexicomp printouts to the Lab Report #14. Label your data with the following information: a. The stimulus voltage b. The latent period and its duration in seconds c. The contraction period and its duration in seconds d. The relaxation period and its duration in seconds 1. Threshold voltages for motor points in the hand can vary from person to person. What could account for these differences in threshold voltages? The threshold voltages for motor points in the hand can vary from person to person due to the thickness of the skin, dirt on the hand, or oily hands. . Outline your hand in the space below and then for each part of the palm and fingers record the minimum voltage required to elicit a muscle twitch. [pic] A = 230 X 0. 1 = 23 mv (lumbricales) B = 350 X 0. 1 = 35 mv (Flexor Pollicis Brevis) 3. ) When a nerve cell is at rest, there is a relatively greater concentration of sodium ions on the outside of its membrane 4. ) When sodium ions are actively tra nsported outward through a nerve cell membrane, they are exchanged for K+ ions which are transported inward. 5. The difference in electrical charge between the inside and the outside of a resting nerve cell (neuron) is called the resting membrane potential. 6. ) If the resting potential becomes less negative (-70 mV toward 0) in response to stimulation, the process is called depolarizing graded potential. 7. ) Any stimulus weaker than a threshold stimulus is termed a subthreshold stimulus. 8. ) If a series of subthreshold stimuli is quickly applied to the neuron, the cumulative effect may be sufficient to initiate an impulse. This phenomenon is called temporal summation. 9. Following depolarization, potassium ions diffuse outward and cause the cell membrane to become more negative. 10. ) An action potential (or nerve impulse) is a rapid sequence of changes involving the inward movement of Na+ ions followed by the outward movement of K+ ions. 11. ) Following the passage of a nerve im pulse there is a period during which a threshold stimulus will not trigger another impulse. This period is called the refractory period. 12. ) A single nerve cell, just like a single muscle fiber, transmits an action potential according to the all or none principle. 3. ) Nodes of Ranvier (neurofibral nodes) occur between adjacent axon segments of the Schwann cell. 14. The type of nerve conduction in which and impulse jumps from node to node is called saltatory conduction. 15. ) The greater the diameter of a nerve fiber, the faster the impulse travels. 16. ) Explain in detail what physiological events are taking place during the latent period. In your discussion explain the difference between the â€Å"latent period† for the Physiogrip experiment and the â€Å"latent period† for the Flexicomp experiment. In the laboratory, a witch can be produced by direct electrical stimulation of a motor neuron or its muscle fibers. The record of a muscle contraction is called a myogram. Twitches of skeletal muscle fibers last anywhere form 20-200 Msec. This is very long compared to the brief 1-2 msec that a muscle action potential lasts. Note that a brief delay occurs between application of the stimulus and the beginning of contraction. The delay, which lasts about 2 msec, is termed the latent period. During the latent period, the muscle action potential sweeps over the sarcolemma and calcium ions are released from the sarcoplasmic reticulum. If two stimuli are applied, one immediately after the other, the muscle will respond to the first stimulus, but not to the second. When a muscle fiber receives enough stimulation to contract, it temporarily loses its excitability and cannot respond for a time. Physiogrip: It also showed that there was a less latent period because it only interacted with the nerves to the fingers. Flexicomp: The impulse generated below the knee has to travel to the spinal cord and then reaction takes place, making the latent period longer.

Autism 2

Autism 2 Essay There are many diseases and disorders that plague todays society, but one of the most serious of those disorders is autism. Autism is not nearly as widely known as the familiar Downs Syndrome, yet, surprisingly, autism is far more widespread. In fact, autism is the third most common developmental disability, affecting 400,000 people worldwide (Autism Society of America). As of yet there is no cure for this debilitating disorder, only a variety of treatments. Autism is a developmental disability, not a mental illness, that typically appears during the first three years of life and affects 15 of every 10,000 individuals. No one is certain why it occurs, but researchers have found that MRI (Magnetic Resonance Imaging) scans of people with autism show abnormalities in the structure of the brain. Significant abnormalities include differences in the cerebellum and in the size and number of Purkinje cells within the brain. Sometimes there is a pattern that exists within families from generation to generation. This indicates the possibility that autism is genetically related. However, no gene has been found. Every person with autism is different and there is no set type or typical person with autism. This is because autism is a spectrum disorder, meaning that symptoms and characteristics of the disorder can present themselves in a variety of ways, from mild to severe. Usually children with autism have deficiencies in both verbal and non-verbal communication. Their language develops slowly or not at all and they have very short attention spans. They often lack social skills and will spend time alone, rather than with others. In more severe cases, children have unusual reactions to physical sensations such as being overly sensitive to touch or under responsive to pain. Most commonly, children with autism lack imagination and imitate others ideas, rather than initiate their own. Lastly, behavior is greatly affected by autism. They may be overactive or very passive and throw frequent tantrums, injuring themselves, for no apparent reason other than to gather attention. They often lack common sense and show aggressive or violent behavior. While some people only show one or two symptoms, others have all or nearly all and find it extremely difficult to function in society. People with autism do live normal life spans and the behaviors associated may change or disappear over time. As of yet, there is no cure for autism. However, with the proper treatment, many of the behaviors can be positively changed. Some of the treatments include behavioral training, teaching of communication and social skills, auditory training, medications, and a change in diet. Behavioral training or modification, as it is also called, deals with changing or extinguishing inappropriate behaviors and increasing positive behaviors. A few methods are used to do this. One way is self-management where the individual monitors their behavior and receives self-reinforcement. Another method used is modeling. This is when the teacher or therapist demonstrates what is being done so the child can model the steps. Behavioral training is effective in stopping self-inflicted pain by shaping and distributing positive reinforcement. The teaching of communication and social skills is an integral part of treating autism. Speech therapy may include gaining language skills or learning sign language. Some devices are used frequently such as picture communication boards. Another device is used with a trained professional supporting the hand or arm of the person helping them to punch keys on a device. This technique, called facilitated communication, is highly controversial because it is sometimes thought that the facilitator is directing the persons arm unknowingly. One of the main characteristics of autism is the lack of understanding of social cues (Autism Society of America). The person with autism may be taught how to communicate in social situations or respond to certain facial expressions and emotions. If the emphasis is on social communication, a speech therapist will work closely with the child to ensure proper communication in social situations. Auditory training is sometimes used for those individuals who are oversensitive to sound. An audiologist plays a different variety of sound frequencies in this therapy. Food allergies and sensitivities have been shown to produce a variety of symptoms associated with .

Culture Feminism and Fashion Essay Example | Topics and Well Written Essays - 2000 words

Culture Feminism and Fashion - Essay Example The intention of this study is feminism is a collection of ideologies that share a common goal to establish and achieve equal cultural, political and personal rights for women. A feminist self-defines as an advocate for the rights. The feminist theory aims to understand the nature of gender inequality by examining the social roles of women and the lived experiences. There are varying views on sexuality among the many different feminist groups. Their attitudes towards the female sexuality take different directions. Matters like sex industry and sexual representation in the media and some issues relating to consent to sex under situations of male chauvinism have been contr0versial among the feminists. The debate reached its epitome in the late 1980s. This came to be known as feminist sex wars. These have also led to the emergence of feminism psychology. It emerged as a critique of the dominant male outlook on psychological research where it was only the male perspectives that were stud ied with all male subjects. As women secured degrees and doctorates, their issues were introduced as legitimate study topics. The psychology emphasizes social context and qualitative analysis. Many projects have cropped up to catalogue the feminist influence. An example of such is the Psychology’s feminist voices. The feminist groups have come up with terms like ant fashion. The term refers to various styles of dress and which are explicitly against the fashion of the day.

Macroeconomics Keynesian and Classical Model Essay

Macroeconomics Keynesian and Classical Model - Essay Example Given below is the diagram showing a horizontal aggregate supply curve in Keynesian Model. If there is a decrease in income, the reasons are assigned to decrease in government spending, increase in taxes or decrease in money supply and so on. The change in income leads to changes in a number of things out of which fall in demand is one of them. Aggregate demand depends on real money supply. The real money supply is the value of money provided by the central bank and the banking system. If we write the number of dollars in the money supply as M' and the price level as P, we can write the real money supply as M'/P. When M'/P falls, interest rates increase and therefore the investment falls, leading overall aggregate demand to fall as well. When there is a fall in demand we need less output to cater the market, this is another reason for fall in investment, and an increase in unemployment as well. This was a briefing of how things would change with a decrease in income. The below given diagram shows AD as the aggregate demand before the reduction in income with E as the equi librium. Once the demand decreases due to above-mentioned reasons another line AD' is formed showing the current level of demand at the given price level. ... Now consider how wages adjust when the demand for labor decreases and firms do not need any over times. In the short run when the demand decreases workers are being paid more as compared to the output produced. The employer would want to reduce the wage expense. Change in wages is a slow process hence the employer will have to look for an alternative like looking for those employees who would be willing to work at a lower wage. This would increase some of unemployment. The employer has to be very careful in setting the wage through negotiations with the employee to consider the morale of the employee. If there is an overall decrease in demand then hiring new labor force may not be difficult, but if only one employer's demand of output has decreased then the employer may have to pay higher wage in order to keep the employees attracted to their current job. The Keynesian theory believes that, the employment offered by firms depends on the demand for their output, workers would be unemployed if the output produced exceeds the demand of the products excessively. Which would mean too much of unnecessary labor force. As such, demand-deficient unemployment is not caused by labor insisting on a wage incompatible with full employment. Since that unemployment is not the fault of the workers, but is due to factors beyond their control, it may be termed 'involuntary unemployment'. Labor market is not depended on the rate of real wages but infact on the quantity of output required. Therefore wage does not have much to do with unemployment. When the aggregate expenditure equals to AD', the equilibrium level of income is established at Y', which happens to be lower than Yf (full employment). Referring to the production function diagram [sector (b)] we see

For Whom the Bell Tolls Plot :: essays research papers

For Whom the Bell Tolls; Synopsis   Ã‚  Ã‚  Ã‚  Ã‚  Robert Jordan is the protagonist of this novel and the plot revolves around him, his conflicts, and his newfound love as I will reveal. Robert Jordan is an American, who lived in Spain for ten years, he is an expert in dynamite, and he is devoted to the Republican cause in the Spanish civil war. A Russian officer, General Golz, send Jordan on a dangerous mission to blow up a key bridge in an offensive behind enemy lines, in the Sierra Mountains. Anselmo an old Spaniard, guides Jordan past enemy lines to see the bridge, which was guarded by fascists on both sides. After that Anselmo takes Jordan to meet the guerilla band he will be working with on this mission.   Ã‚  Ã‚  Ã‚  Ã‚  The leader of the guerilla band is a man named Pablo. Pablo once was a feared an honorable man but throughout the book his respect diminishes. Pablo is against Jordan's mission right from the start because he thinks Jordan is there to get their band out of the mountains. Pablo is important to the plot because he provides a challenge for Jordan that results in the death of Anselmo, Jordan's friend.   Ã‚  Ã‚  Ã‚  Ã‚  When they get to the guerilla cave, they sit down to eat and drink wine, then Maria enters, bearing food. Maria is a Spanish girl who was rescued from the fasicists by the guerilla band when they were on a mission to blow up a train. Jordan notices Maria and is instantaneously attracted to her. Jordan also meets Pilar, Pablo's woman, who fights alongside the band. Pilar is a strong woman and her leadership ability is displayed later when she takes over the band. Pilar encourages Jordan to pursue Maria, but she warns him to take care of her, for she has undergone tremendous trauma.   Ã‚  Ã‚  Ã‚  Ã‚  Jordan and Anselmo leave to inspect the bridge. Jordan sketches it and takes notes on the best way to place the explosives. On the way back to the cave the two men discuss war. Anselmo believes it is a sin to kill even in war, but he claims he will kill for the cause. Jordan says he is fully prepared to kill the enemy. When they are not far from the cave they encounter Agustin who was on guard. Agustin warns Jordan to protect his explosives from Pablo.   Ã‚  Ã‚  Ã‚  Ã‚  Everybody hushes up when Jordan enters, indicating they had been talking about him.

Costs Of Building A Zero Carbon Dwelling Environmental Sciences Essay

To province that a house is zero C the C dioxide emanations ensuing from all the energy used in the home have to be zero or better. Put merely, a zero C place uses less energy than it generates over a fit period of clip. This will include all contraptions and takes into history the onsite renewable energy installings. Presently the building industry is responsible for the ingestion of over 400 million metric tons of natural stuffs every twelvemonth ( DTI, 2006 ) . This has helped consume our natural resources, destroy home grounds and make a important sum of pollution. Many professionals have begun to defend the usage of green edifice merchandises so as to cut down the industry ‘s impact on the environment. It is recommended that the authorities should promote the building industry to follow these alterations. Surveies have shown that place proprietors are witting of the of all time altering clime alteration and are willing to alter the hereafter and their places if they can pr acticably make it. Through the usage of questionnaires every bit good as a series of interviews information was gathered from householders sing their ideas on the usage of green edifice merchandises, obstructions forestalling the alteration to zero C place, the value of Government policy, effectivity of Government action, and thoughts for the hereafter. Consequences indicated the chief obstruction to constructing a nothing C emanation home was a deficiency of environmental information, interviewees commented on how hard it was to happen out the environmental friendliness of edifice merchandises. When it came to Government policy, many indicated that their cognition of this was excessively unclear to be of usage. It was reported that on the whole the action by the Government was deficient and that it could make significantly more. Recommendations included the debut of statute law and a simpler usher to follow and understand. Keywords: Green Materials, Zero Carbon, Government Policy, Environment 1. Introduction1.1. BackgroundThe actions of the building industry have important long-run impacts upon the environment. In recent old ages at that place has been a mounting consensus within the building industry and within authorities on the demand for more and pressing action to undertake clime alteration. In the United Kingdom entirely, the building industry uses over 400 million metric tons of natural stuffs per annum and produces over 90 million metric tons of destruction and building waste per annum which is about three times every bit much as family waste ( DTI, 2006 ) . Approximately 40 % of the nursery emanations within the UK are produced by the building, activity and care of edifices ( Jones, 2008 ) . Even though the industry is damaging to the well being of the environment the industry has an tremendous part to do in bettering the quality of life for everyone and in add-on it excessively is of import to the stableness of the UK economic system as it employs around 3 milli on people, has an end product worth in surplus of ?100 billion and histories for at least 8 % of the GDP ( HM Government, 2008 ) . Encouragement for more sustainable building has been a cardinal purpose of assorted stakeholders including the authorities. Undertaking clime alteration is about more than merely turning away of environmental ruin. It can bring forth a better category of society and a stronger, more sustainable economic system. There are touchable, immediate benefits for concern. It can guarantee that our economic system emerges from the planetary diminution at the head of the technological and societal displacement that will specify the hereafter. With procuring these benefits it means recognizing the necessity of action. The full universe is engaged in a race to take down C emanations, and moving early will merely profit us in the hereafter as we will be positioned good for the new industries that are being created. Presently the planetary market for low C services and goods is already deserving over ?3 trillion per annum, and will most likely grow by half that once more by 2015. By now, about 900, 000 people work within the low C sector or its supply concatenation in the UK, non merely limited to green fabrication but in green services for illustration consultancy or low C venture capital. The usage of green edifice merchandises can accordingly play an of import portion in diminishing the overall impact of the building industry on the environment. Green edifice merchandises can take many signifiers, to province that a edifice stuff or merchandise is green merely it has to hold at least one of the undermentioned features atoxic, recycled content, resource efficient, long life rhythm, or, environmentally witting. Some stuffs and merchandises have more of these features than others and are, hence, considered â€Å" greener † . In recent old ages at that place has been an increasing consensus within the scientific community and within authorities on the demand for farther and pressing action to cover with clime alteration. With this in head the Committee on Climate Change was asked to reevaluate the Government ‘s long-run mark, to cut down C dioxide emanations to 60 % below 1990 degrees by 2050. The Government has acknowledged the Committee ‘s recommendation that the mark should be to diminish nursery gas emanations to 80 % below basal twelvemonth degrees by 2050. Planing clime alteration intercessions to be as cost effectual and efficient as possible has become of all time more of import in the current economic clime. Gaining the extenuation potency at the least cost to the economic system requires an effectual, believable and good considered policy model to present the needed emanations decreases. ( DEFRA & A ; Department of Energy and Climate Change, 2009 ) At a glimpse the Government appears to be dedicated to promoting the usage of green edifice merchandises, but it is truly excessively early to cognize whether this degree of committedness is in fact holding any influence on the attitudes and behavior of those charged with stipulating stuffs. The purpose of this survey is to find the existent cost of constructing a nothing C home, how successful the authorities has been on promoting the alterations necessary to be deemed zero C, the alterations that occur as a consequence. Before this can be achieved it will be necessary to travel over the authorities ‘s policy in full and moreover analyze the extent to which green edifice merchandises are presently specified. In add-on it will be of import here to analyze what issues prevent the usage of green stuffs and afterwards decide whether the authorities is set abouting plenty to battle these issues. The bulk of the research will concentrate on how to go zero C and the cost in making so, in add-on looking into the affects this has on Government programs. Obviously the survey can non see every subdivision of the building industry, so the survey will take to hold a broad set of positions and sentiments runing from Quantity surveyors, Building surveyors, Architects, place proprietors and Government organic structures.1.2 Research AimThe full intent of this survey was to find the existent cost of constructing a nothing C emanation home. Research Aims What are the emanations marks set by the Government, what is being done to run into these deadlines? To find what action the Government has taken so far to promote householders to take a greener option, can they make better? To analyze the sentiments of place proprietors and the general feeling towards Government policy on going zero C. What can home proprietors do to go zero C, and are they willing to pass money on these alterations? What are the advantages and disadvantages for place proprietors, the Government and the environment? Do place proprietors have the same positions as the Government? Outline Research Methodology The cardinal facet of this survey is happening out what the existent cost is for constructing a nothing C emanation brooding. A qualitative research attack has been adopted. The research is non based upon a clear theory or job and so it is non nonsubjective by nature, therefore the quantitative attack is non appropriate to the research. The first aim is to be attained through an in-depth reappraisal of the authorities policy and enterprises, whilst the other four will be achieved through the aggregation of informations, subsequent analysis and farther research, However before this takes topographic point a huge reappraisal of literature is required to bring out the cardinal theories. There are two methods of informations aggregation within this thesis, the questionnaire and the interview. The questionnaire will be employed to garner general information from a comparatively big sample of the place proprietors, whilst telephone or in individual interviews will be conducted to illicit more in-depth information from a much smaller sample. It was hoped that together, both methods would garner the best information to accomplish the purpose of this thesis and get the better of the restrictions of each method. The questionnaire is structured so that inquiries are set out into subdivisions that each relate to an aim. Respondents from the questionnaire were asked if they would be happy to take portion in an interview, either in individual or over telephone. Semi-structured interviews were conducted with seven respondents, they were each asked the same inquiries but were on occasion probed for more elaborate responses. The assorted statistical trials were inappropriate for the qualitative research attack employed within this thesis, alternatively information from the questionnaire was analysed utilizing the descriptive statistics methods. The findings would be used together with the interview findings to explicate any tendencies from the questionnaires. Contentss The contents of the thesis are as follows: Literature Review – Scope of chapter – Specification in pattern – Obstacles to Specification – Government Action – Summary Research Methodology – Scope – Proposal – Scheme – Design – Methods of Data Collection Data Collection Methods – Scope – Questionnaires – Interviews Datas Analysis – Scope – Method of Analysis – Data Analysis Discussion & A ; Conclusion – Scope – Discussion – Decision – Recommendations – Deficiencies/Limitations – Further Research Mentions Appendix2.0 LITERATURE REVIEW2.1 ScopeThis chapter looks to analyze a assortment of stuff in the signifier of books, articles, diaries amongst others, all of which are related to replying the inquiry â€Å" The existent cost of constructing a nothing C emanation brooding † It begins with a bomber chapter that looks to explicate what is required to hold a home nothing C. It so includes legion bomber chapters that seek to look into how much it will be to go zero C and how easy is it for householders to do the alteration. The chapter concludes with an assessment of the cardinal actions made by the Government in trying to promote place proprietors to do the alteration. The axial rotation in which the authorities plays in cut downing the C pes print and the marks that have been set.2.2 What is a Zero Carbon Dwelling?To set merely a nothing C home is one that returns to the National Grid every bit much power as it uses over the class of a twelvemonth. Unless you plan on life somepla ce with no warming, electricity or H2O, that means a zero-carbon place will necessitate to be kitted out with equipment for micro coevals, the production of energy on a little graduated table. Therefore, mini wind turbines, solar panels and a wood pellet burner for bring forthing energy are the manner frontward to accomplishing a zero C emanations brooding. Meanwhile, to maintain that cherished energy in there is demand for clever, draught excepting building with super-insulated walls, a geothermic warming system pull outing heat from the land and triple-glazed Windowss. In add-on to this there could besides be a rain H2O roll uping armored combat vehicle to provide the lavation machine and toilets and to be connected to a reed-bed sewerage system for organically cleaning human waste. The HM Treasury describes a nothing C place: â€Å" Allowable electricity † means electricity generated from a zero-carbon energy beginning designed to function the home and which is conveyed to the home, or to a sub-station connected straight to the home, by overseas telegrams used entirely for the conveyance of electricity from that beginning. A zero C place is one with ‘zero net emanations of Carbon Dioxide ( CO2 ) from all energy usage in the place ‘ . The definition encompasses all energy usage in the place this includes all energy from cooking, TVs, computing machines and any other contraptions instead than merely those energy uses that are presently portion of edifice ordinances for illustration infinite warming, hot H2O, airing and some lighting. It means that over 12 months there are no net C emanations ensuing from the operation of the home. This could be achieved either through stairss taken at the single home degree or through site broad schemes. Consequently it will non be necessary for each home to hold its ain micro coevals capacity where development degree solutions would be more appropriate. ( DCLG 2006 ) It is of import to hold the right balance, rewrite the definition to slackly and there will be small or no micro coevals this includes land beginning heat pumps as developers go for the easier path of off puting, but write the definition excessively restrictive, and the mark of accomplishing zero C places will be viewed as close impossible to run into and merely will be ignored by developers, this besides means there will be small or no micro coevals. 2.3 Why Is Becoming Zero Caron Important? The motive for alteration is simple, since the morning of clip adult male has used resources to last and in present twenty-four hours we have developed a planet that relies to a great extent on natural stuffs from the Earth. The current universe population stands at merely under 7 billion ( CIA World Fact book, 2008 ) and is turning every twenty-four hours, as it grows so does the demand for natural stuffs. Natural stuffs such as coal, gas, and oil are being used quicker than the Earth can reproduce them intending the demand for new dependable resources. Figure. Global Carbon Dioxide Emissions from Fossil-Fuel ( And Cement ) Production. Even more significantly CO2 emanations rates are at an all clip high which has resulted in clime alteration, which is going more evidentiary, for illustration the winter of 2009/2010 It was the coldest December in Britain for 14 old ages, 1.8C ( 3.2F ) below norm, and the coldest in Scotland for 28 old ages, 2.1C ( 3.8F ) below norm. ( The Times, 2010 ) Climate alteration is about surely the most of import issue to confront any coevals in history. The world-wide scientific community is practically consentaneous in its understanding that clime alteration is happening, and that it ‘s our mistake. The universe needs to alter before it gets out of our control, as the effects, which are already seeable, will be ruinous. Just some of the effects are lifting sea degrees due to the thaw of the polar ice caps, holes in the O-Zone bed, more frequent and more terrible natural catastrophes, large-scale nutrient deficits, pestilences, monolithic species extinctions, unprecedented Numberss o f refugees, intensified cultural and political tensenesss, and a planetary economic depression the likes of which no 1 has of all time seen. The state of affairs is still within our appreciation, but action must be taken now, we must move together and strongly. Every person must stand up and be accounted for, companies, and authoritiess across the full Earth must make what they can to change by reversal clime alteration before it becomes excessively late. The clip has to be now as we will ne'er acquire another chance.Untjhjitled.png 2.4 Driving Towards Zero Carbon Despite the current economic and political environment, there are multiple drivers that exist for the development of low C homes. These can be loosely separated into the undermentioned three classs, concern, cultural, and legislative drivers, which are examined below: 2.4.1 Business There is a turning civilization of corporate societal duty ( CSR ) within the building industry. The importance attached to CSR was strongly illustrated in the World Wide Fund for nature study, entitled ‘Building a Sustainable Future ‘ where a study of 20 of the UK largest lodging developers revealed that 70 % study publically on their attack to sustainability and 65 % have a corporate sustainability policy in topographic point. ( WWF, 2007 ) Consequently, CSR has the possible to be a powerful driver for zero C places, as companies strive to better their environmental public presentation. Furthermore, it was stated that in transcending minimal sustainability criterions, house builders can profit from enhanced trade name acknowledgment and repute. ( Carter, 2006 ) Similarly, the WWF reported, that accomplishing high criterions of environmental and societal public presentation can be used to a developer ‘s advantage to pull clients and high quality employees. However, the building supply concatenation could hold a more profound impact on the nothing C marks. ( WWF, 2005 ) 2.4.2 Cultural Despite the fact that client demand for low C homes is presently limited, it is acknowledged as a turning market and country of involvement. ( Carter, 2006 & A ; DEFRA 2005 ) A survey carried out in 2007 by Sponge Sustainability Network found that there is a turning desire amongst the UK populace to implement more sustainable life styles. The addition in client demand is likely to carry house builders to willingly integrate sustainable characteristics into future building undertakings. It is suggested that this upward low C civilization could be built upon by authorities enterprises, either through the proviso of financial inducements ( Dobson, 2007 ) or the incorporation of sustainability factors in belongings ratings. ( Lutzendorf & A ; Lorenz, 2007 ) Favourable be aftering policies, such as Planing Policy Statement 1 ( PPS1 ) ( DCLG, 2005 ) , and bing authorities policies, such as the Energy White Paper ( DTI, 2003 ) , which are aimed at advancing sustainability within the reinfor ced environment, are apt to farther heighten the integrating of such characteristics and the encouragement of a low C civilization. In add-on, these policies pave the manner for new statute law, to which stakeholders in the edifice industry are shown to react best. ( Structural Survey, 2007 & A ; CIOB, 2007 ) 2.4.3 Legislative The chance of future statute law itself should show to be a major driver in accomplishing zero C places by 2016. ( BRI, 2007 ) It is likely that the CSH, will go statute law and is expected to be the most influential driver for house builders to construct zero C places and that those who take on a pro-active attitude will derive extended and practical cognition of low C house edifice, from which they will harvest the benefits financially by being capable of run intoing the enhanced edifice demands more cost efficaciously. ( CIOB, 2006 ) The likely debut of the CSH as statute law, aboard with the execution of Energy Performance Certificates in line with the Energy Performance of Buildings Directive, has been highlighted in a survey by Vorsatz etA Al. in 2007 as being highly successful in footings of decreases in CO2 emanations and cost effectivity, to the point that these steps could be the cardinal drivers for nothing C lodging. 2.5 Obstacles Against Achieving Zero Carbon? The last subdivision attempted to sketch the significance of a nothing C emanation brooding. There are a batch of alterations that have to be completed before a home can be deemed zero C, people tend to happen it hard to do alterations to a life style that they have came usage to over clip, besides this obvious obstruction there are legion others such as cost, strangeness, and These will be pointed out in this chapter. 2.5.1 Cost First it can be instead dearly-won to do any type of brooding zero C particularly if it ‘s updating current places as this involves money for something that in the bulk of place proprietor ‘s eyes is n't necessary. For bing homes, the edifice ordinances can non be retrospective but the eventual execution of Energy Performance Certificates ( EPCs ) could take to betterments being obligatory at the phase of selling any house. Currently, energy efficiency betterments to bing houses are chiefly carried out throughout rehabilitation plants as steps implemented by local governments, lodging associations and landlords to their ain homes. Individual proprietor residents may take to the option of upgrading insularity normally with the aid of grant assistance towards the outgo. The Government needs to acquire across the message and householders need to acknowledge that cut downing the C emanations on their lodging will take to higher capital costs but as a consequence will hold low er running costs. Underneath provinces several good grounds for sing a nothing C home: Lower your energy bill/consumption, Lessen our dependance on foreign oil, Preserve cherished universe resources, Follow the national and international tendency towards green life, Enjoy better wellness and wellbeing, Protect your lungs and respiratory system, Strengthen the immune systems of both yourself and your kids, Prevent/recover from chemically induced allergic reactions, Enjoy higher value and resale value of your place. Figure. What makes a nothing C place? ergteghdfgdfgdfg.png Bartlett & A ; Howard ( 2000 ) wrote that measure surveyors believed that the more environmentally friendly edifices cost between 5 – 15 % more than conventional 1s to construct. In contrast with, Lockwood ( 2006 ) studies that the market for green edifice merchandises is altering with many sustainable, non-toxic stuffs readily available at sensible monetary values and some recycled merchandises bing the same or less than conventional 1s. Spiegal & A ; Meadows, ( 2006 ) have besides highlighted that simple economic comparings show that green merchandises, particularly those with a high recycled content, are competitory for purchase and installing. On norm, premiums for green edifice merchandises are less than 2 % ( Kats, 2003 & A ; Morris, 2007 ) Never the less there is no warrant that the building industry will pay even a little addition in cost for green edifice merchandises as it frequently criticised for being focused entirely on net income ( House of Commons Environmental Audit Committee, 2006 ) . Surveies have found that the cost of a new physique nothing C home is cheaper than trying to transform an bing belongings into a genuinely green place, nevertheless it is still expensive. The estimated cost for constructing a criterion nothing C place would be within the part of approximately ?120,000 to ?140,000, in contrast to a similar sized traditional belongings which will be around ?85,000. However, that does non include the cost of land, an expensive trade good in Britain, or the developers ‘ net incomes. The basic cost of a nothing C place, with no subsidies, is non likely to be less than ?350,000 to ?400,000, with that being said one time more have been constructed you will happen that it will go more low-cost as the engineering and expertness will go cheaper. ( TIM, 2007 ) The Calcutt reappraisal of house edifice provinces that many house builders refrain from utilizing green stuffs because they find that purchasers are loath to pay more for sustainable homes ( CLG, 2007 ) 2.5.2 Unfamiliarity 2.5.3 Time 2.4 Government Policy & A ; Action It is universally accepted that decreases in CO2 emanations are needed in order to stabilise the universe ‘s clime, and that these will be dearly-won and better implemented sooner instead than subsequently. The of all time altering clime has established itself as a major issue, and to assist undertake planetary warming the UK is seting itself on a way to cut its C dioxide emanations by some 60 % on 2000 degrees by 2050, with existent advancement by 2020. ( DTI, 2003 ) This was superseded by a authorities proclamation in October 2008 for a more ambitious mark perpetrating the UK to cut nursery gas emanations by 80 % by the center of the century. ( DECC, 2008 ) This committedness will necessitate C decreases to be made by all industries. The reinforced environment histories for a big proportion of emanations, C dioxide emanations from the lodging sector have risen by more than 5 % since 1997 and account for 27 % of the UK ‘s C footmark. ( DTI, 2003 ) The authorities has as a consequence highlighted the lodging building industry as a key sector where C decreases can be made. Due to tendencies in the formation of new families and the decrease in their mean size, combined with inward migration and longer life anticipation of the population as a whole, it has been estimated that an addition of around 120,000 private-sector and 26,000 societal places per twelvemonth over present supply is needed. ( Barker, 2004 ) The UK authorities ‘s response in 2005 was to show an aspiration to increase the supply of new lodging in England to 200,000 units per twelvemonth by 2016. This means that in 2050 about 30 % of lodging will hold been built since 2006, with the balance already bing now. In add-on, in December 2006, the authorities published the Code for Sustainable Homes ( CSH ) as a tract to accomplishing zero C places in England. ( DCLG, 2006 ) The CSH sets ambitious marks for the lodging building industry, for which the existent commercial benefits and cos ts are still unknown. Action to cut down entire emanations demands to be aimed at both new physique and bing lodging, nevertheless the UK authorities has decided to take a firm stand on improved criterions for new edifices, and positively cut down emanations by that path. This is possibly because in retrospective alteration to current edifices is perceived as complicated and unpopular, as evidenced by the taking off of a demand to do energy betterments to the bing cloth together with any proposal to widen an bing edifice with a floor country of less than 1000 M2 between the first proposal ( ODPM, 2004 ) and execution ( DCLG, 2006 ) of the 2006 Building Regulations. The authorities justifies this focal point on new physique by asseverating that doing every executable cost effectual energy betterment to bing places would cut down the annual CO2 emanations in 2050 by merely 25 % of what is required intending the remainder must be achieved in new built places. ( DCLG, 2006 ) Given that this will necessitate a ll new places built between now and 2050 to run into at least low or zero C criterions, there is a instance for re-examining this inexplicit rejection of a policy of energy betterments to bing edifices. Early consequences from a present research programme to recognize ways of cutting down C emanations from bing edifices ( Anon, 2004 ) expose the technological potency for halving the emanations from bing lodging, hence there will be enough of range for deploying the sorts of loans and subsidies to bing place proprietors that make betterments that are cost effectual and are used successfully elsewhere, for illustration in Germany. ( KFW, 2007 ) 2.4.1 The Code For Sustainable Homes The Code for Sustainable Homes ( DCLG, 2006 ) aims to supply a system for developing and showing superior environmental criterions by giving place proprietors better information about the sustainability and running costs of their places. In April 2007 there was a voluntary appraisal stage in order to derive experience in the methodological analysis, taking to a compulsory evaluation demand for all new places excepting bing places from 2008. The full appraisal is a evaluation method across all the countries of sustainability, based on the Eco Homes system, ( BRE, 2006 ) but it is proposed to do merely the energy/CO2 emanations evaluation mandatary and this will work through phased alterations to the Building Regulations. Eco Homes depends on a group of independent vouchers who will measure the design and carry out a station completion cheque on the edifice. In the instance of multi place developments they will look merely at each different house type and a sample of the completed units, as this makes better usage of clip. This station completion cheque on the energy/CO2 emanations public presentation is an of import alteration from the chiefly design based appraisal mentioned above, but the Code does non discourse its nature. In common with the other dimensions of sustainability, the overall energy/CO2 emanations evaluation for the home identified as the Standard Assessment Procedure ( SAP ) evaluation will be assigned a degree. The Code degree to achieve a one-star evaluation corresponds to a 10 % betterment over the Target Emission Rate in the 2006 Building Regulations. Two, three and four stars correspond to 18 % , 25 % and 44 % betterments, severally. A five star evaluation is a 100 % betterment, corresponds to zero emanations in relation to affairs covered by the Building Regulations, this being zero emanations from heating, hot H2O, airing and lighting. The highest degree is a six-star rated place, this is a wholly 0 C place significance there is zero net emanations of CO2 from all energy usage in the place. The SAP evaluation mark can be met in a assortment of ways such as, bettering the cloth of the edifice, bettering the efficiency of illuming and infinite warming, and by utilizing lower C fuels while the Code in add-on covers the energy/CO2 emanations of a little scope of white goods like deep-freezes, dish washers, etc. While flexibleness is allowed as to how these evaluations are achieved, in exercising a scope of intercessions will be necessary, as discussed farther below. The Code notes that a six-star place will necessitate to present zero C emanations over 12 months for all energy usage in the place, cookery, rinsing and place amusement systems, every bit good a s infinite warming, hot H2O, airing and lighting. The Code gives descriptive illustrations of houses run intoing the different degrees and for a six-star place this means that energy taken from the national electricity grid would hold to be replaced by low or zero-carbon generated electricity. ( DCLG, 2006 ) The clip graduated table proposed for implementing these betterments to the public presentation of new places was to be 2010 with the minimal demand being three stars, ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? has this happend in 2013 it will be four stars, and in 2016 it will be six stars. The UK authorities is hence draw a bead oning to present a wholly zero-carbon supply of new places by 2016. Some of the deductions of this are explored below, after a brief treatment of the premises implied by the proposals. Is 2016 excessively late? Will the quality of edifices be compromised? Will the wellness and safety be compromised? Ill use a Questionnaire to acquire my information Open or closed inquiries? ? ? ? ? ? Open give more item but clip devouring to make full in Closed less item but easier and easier to compare fixed replies Interview Provides the item that the questionnaires could n't give ( will stop up utilizing closed questionnaire ) ( closed merely agencies yes no replies and multiple pick ) Drumhead With the really being of the effects of clime alteration in difference ( some do n't even believe its existent ) its impossible to state. However better to be safe than sorry, merely positive can come out of it every bit long as does n't come at a cost of human life or edifice quality Use in datat findings: : : A First it can be instead dearly-won to do any type of brooding zero C particularly if it ‘s updating current places as this involves money for something that in householders eyes is n't necessary

James E. Porter’s Idea of Originality in Intertextuality...

Since I arrived in the United States one of the first concepts that was introduced to me was the concept of plagiarism and the severity of its consequences. Since that moment I see myself focusing much more on paraphrasing and not committing plagiarism than the quality of the ideas that I am writing. However, I have noted that most of my ideas and opinions are probably based on somebody else’s work I might have read before. Therefore, is it not plagiarism? In the article â€Å"Intertextuality and the Discourse Community,† James E. Porter challenges the idea of what plagiarism truly is. He states that it is almost impossible to write without committing some sort of plagiarism. Instead, Porter introduces the concept of intertextuality, which he†¦show more content†¦What he describes as originality is to take somebody else’s ideas and create new perspectives and opinions based on those points of view. In other words, Porter suggests that creativity is a mat ter of interpretation and that anything we write is the result of what we interpret when we read. That is why taking other’s ideas to draw knew opinions should not be called plagiarism because inevitable all writing contains some sort of intertextuality. One can say that intertextuality is necessary for a writer to have a better understanding of what they read. As an international student myself, paraphrasing is one of the aspects that turns writing into a nightmare for me. Since my vocabulary is somewhat reduced, I have to focus more on making my sentences look as different as possible to the original texts. I was so scared of committing plagiarism that I did not even consider the aspect of using the author’s ideas and creating my own opinions. Instead I preferred to follow the norm and paraphrase as much as possible. Sometimes I felt my professors paid much more attention to what I might have plagiarized rather than the quality of my own ideas. That is why writing t urned into a systematic process in which I would only have to know how to rephrase sentences and I would be fine. In the moment I read Porter’s essay I thought it was contradictory to allShow MoreRelatedThe Difference Between Originality And Plagiarism918 Words   |  4 PagesThe Difference Between Originality and Plagiarism Intertextuality and the Discourse Community, a text written by James E. Porter, discusses two general and possibly the most concentrated concepts of writing today. â€Å"(1) That writing must be original and (2) that if a writer â€Å"borrows† ideas from other writing without acknowledging that borrowing, the writer is plagiarizing†(Wardle Downs 395). Throughout Porter’s text, he explores intertextuality, the principle that all writing and speech—indeed