Review Sheet Excercise free essay sample

Ensures that deportation proceeds In an orderly manner from atria to ventricles ; accelerates and coordinates earth activity to effectively pump blood. Electrocardiography 3. Define EGG. Recording of electrical changes occurring during heart actively 4. Draw an EGG wave form representing one heartbeat. Label the P,SIRS, and T waves: P-R interval: the segment, and the Q-T interval. 5. Why does heart rate increase during running? Exercise raises heart rate by acting through the sympathetic nervous system.Sympathetic nerve fibers release morphogenesis on the heart and the pace maker fires more rapidly. 6. Describe what happens in the cardiac cycle in the following the heart is in relaxation (diastole) situations. 1 . 2. Popularization of the arteries 3. Contraction of the aria 4. deportation of the ventricles contraction of the ventricles 6. Revitalization of the ventricles 7. Define the following terms 1 . Tachycardia: Heart rate over 100 beats/minute 2. Radically: Heart rate below 60 beats/Emanuel 3. Fibrillation: Very rapid uncoordinated myocardial activity 8. Which would be more serious, trial or ventricular fibrillation? Ventricular fibrillation. We will write a custom essay sample on Review Sheet Excercise or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The ventricles have major responsibility for ejecting blood from the heart 9. Abnormalities of the heart valves can be detected more accurately by auscultation than by electrocardiography. Why Is this so? Most often serious valve problems can be detected (heard) with a stethoscope.However, since valves are not part of deportation pathway of the heart, their Inefficiency would not be reached on an EGG, Review Sheet Exercise 31: Conduction System of the Heart and Electrocardiography By begetter Node. AS node, VA Node, VA Bundle, left and right bundle branches, Purging fibers At what structure in the transmission sequence is the impulse delayed? VA Node Allows completion of trial contraction before initiation of ventricular systole. 2. Even though cardiac muscle has an inherent ability to beat. He nodal system plays a critical role in heart physiology.What is that role? Ensures that deportation proceeds in an orderly manner from atria to ventricles ; accelerates and coordinates Recording of electrical changes occurring during heart activity 4. Draw an EGG wave form representing one heartbeat. Label the P,SIRS, and T waves: P-R interval; the S-T 1. Tachycardia: Heart rate over 100 beats/minute 2. Brickyard: Heart rate below 60 beats/minute than by electrocardiography. Why is this so? Most often serious valve problems can deportation pathway of the heart, their inefficiency would not be reached on an EGG.

Logic gates Essays - Logic Families, Integrated Circuits

Logic gates Essays - Logic Families, Integrated Circuits Logic gates A logic gate performs a logical operation on one or more logic inputs and produces a single logic output. The logic is called Boolean logic and is most commonly found in digital circuits. Logic gates are primarily implemented electronically using diodes or transistors, but can also be constructed using electromagnetic relays (relay logic), fluidic logic, pneumatic logic, optics, molecules, or even mechanical elements. The simplest form of electronic logic is diode logic. This allows AND and OR gates to be built, but not inverters, and so is an incomplete form of logic. Further, without some kind of amplification it is not possible to have such basic logic operations cascaded as required for more complex logic functions. To build a functionally complete logic system, relays, valves (vacuum tubes), or transistors can be used. The simplest family of logic gates using bipolar transistors is called resistor-transistor logic (RTL). Unlike diode logic gates, RTL gates can be cascaded indefinitely to produce more complex logic functions. These gates were used in early integrated circuits. For higher speed, the resistors used in RTL were replaced by diodes, leading to diode-transistor logic (DTL). Transistor-transistor logic (TTL) then supplanted DTL with the observation that one transistor could do the job of two diodes even more quickly, using only half the space. In virtually every type of contemporary chip implementation of digital systems, the bipolar transistors have been replaced by complementary field-effect transistors (MOSFETs) to reduce size and power consumption still further, thereby resulting in complementary metal?oxide?semiconductor (CMOS) logic. For small-scale logic, designers now use prefabricated logic gates from families of devices such as the TTL 7400 series by Texas Instruments and the CMOS 4000 series by RCA, and their more recent descendants. Increasingly, these fixed-function logic gates are being replaced by programmable logic devices, which allow designers to pack a large number of mixed logic gates into a single integrated circuit. The field-programmable nature of programmable logic devices such as FPGAs has removed the 'hard' property of hardware; it is now possible to change the logic design of a hardware system by reprogramming some of its components, thus allowing the features or function of a hardware implementation of a logic system to be changed. Electronic logic gates differ significantly from their relay-and-switch equivalents. They are much faster, consume much less power, and are much smaller (all by a factor of a million or more in most cases). Also, there is a fundamental structural difference. The switch circuit creates a continuous metallic path for current to flow (in either direction) between its input and its output. The semiconductor logic gate, on the other hand, acts as a high-gain voltage amplifier, which sinks a tiny current at its input and produces a low-impedance voltage at its output. It is not possible for current to flow between the output and the input of a semiconductor logic gate. Another important advantage of standardised integrated circuit logic families, such as the 7400 and 4000 families, is that they can be cascaded. This means that the output of one gate can be wired to the inputs of one or several other gates, and so on. Systems with varying degrees of complexity can be built without great concern of the designer for the internal workings of the gates, provided the limitations of each integrated circuit are considered. The output of one gate can only drive a finite number of inputs to other gates, a number called the 'fanout limit'. Also, there is always a delay, called the 'propagation delay', from a change in input of a gate to the corresponding change in its output. When gates are cascaded, the total propagation delay is approximately the sum of the individual delays, an effect which can become a problem in high-speed circuits. Additional delay can be caused when a large number of inputs are connected to an output, due to the distributed capacitance of all the inputs and wiring and the finite amount of current that each output can provide.

The temperature Essay Example | Topics and Well Written Essays - 500 words

The temperature - Essay Example Energy can transform from one form to another and it can also be transferred between different mediums. When a man floats in cold water whose temperature is significantly lower than his own body temperature, the energy flows from his body into the water. Consequentially, the man starts to become colder while the water around his body starts to rise in temperature. When this happens, its not heat that is transferred, rather it is the man’s internal energy. â€Å"...heat and internal energy are two quite different things; the energy associated with microscopic motions and forces is internal energy, not heat† (Reynolds and Perkins cited in Watson, 2010). The term renewable fuel is used for natural resources which reform faster than they are consumed. Various physical and biogeochemical processes are involved in the replenishment of natural resources (Think Quest, n.d.). According to this definition of renewable fuels, almost all types of resources are renewable resources. Humans need to adopt ways that would allow those resources to replenish faster than the rate at which they consume them. Nevertheless, this is not always possible, particularly with resources such as oil and coal which take too long to replenish. Alternate renewable resources include water, solar power, air and

Porter Novelli or Southern Company Case Study Example | Topics and Well Written Essays - 1250 words

Porter Novelli or Southern Company - Case Study Example This essay demonstrates that the CTO felt this was fundamentally appropriate for specific and full performance definition roles. Performance management and selection applications would be built on the foundation of work results definitions (Goldsmith and Carter, 2010). Drotter requires the same explicit definitions of management and leadership results by level as financial and customer results, making these accountabilities far more specific, examinable, and therefore, understandable to employees. The down - to - earth, application - based approach demystifies leaders and supports the introduction of basic designs to explain both activities. Corporate leaders have traditionally relinquished talent strategy to market forces or left it to their human resources departments to oversee (Aguirre et al 2010). Any company that aspires to maintain competitiveness in the world must use strategic implementation methods on talent (Aguirre, Hewlett & Post 2010). In return, regarding their appropr iate reward, leaders are presented with many expectations. They are required to be strategic thinkers, joining dynamic vision to the chutzpah in order to produce significant change. They also need to be on the sensitive side, on look to the intricacies of political arguments, and able to persuade egos, soothe workers and court widely known acclaim in the media. It is a demanding order and one vexes the thoughts of many as it orients how effective to portray the concept of Porter Novelli without irrelevancy.

Literacy essay Example | Topics and Well Written Essays - 500 words

Literacy - Essay Example clearly put the whole justice system into a question; whether the evidence of ‘crime’ is the sole criteria of declaring guilty of the prime suspect and whether the crime should be seen from a wider perspectives? The story revolves around the place of crime where ‘Minnie Foster or Mrs. Wright as she is now called’ is accused of murdering her husband. Peter Hale, along with Sheriff and County Attorney visit the house to get the ‘feel’ of the murder and gather clue that might have led to it. Sheriff’s wife and Mrs. Hale also accompany them as some personal items were needed by the Mrs. Wright, who was in custody. While the men folk wander around the scene of the crime, the women remain in the kitchen and try to interpret the events by observing small things that was out of sync with the general way, women work in the house and kitchen. When they notice a block of the quilt that was very different from the rest and looked ‘as if the distracted thoughts of the woman who had perhaps turned to it to try and quiet herself were communicating themselves to her’ (Glaspell, 1993). Both the women perceive the signs that would have been emotionally disturbing for Mrs. Wright, the accused. Finally, when they find the dead canary in the sewing box, they hide the evidence that would have conclusively implicated Mrs. Wright and in their own way, try to give justice to the woman who might have been forced to commit the crime and knew that she would be denied justice if the men found the ‘evidence’! In the literary analysis of the short story by Elaine Hedges that was published in a leading international journal of Women’s studies in 1986, Hedge’s interpretation of the story became highly relevant because they brought into focus the weakness of the legal system that relies heavily on the machinations of ‘evidences’. It also highlights a very pertinent observation in the investigative techniques that are adopted by the two genders. While men like to

Electronic Surveillance in Intelligence Services

Electronic Surveillance in Intelligence Services Overview It will be argued that the increased use of electronic surveillance is unlikely to lead to the demise of human intelligence sources, this assignment will show that the two will work together and that regulation will ensure that that they will both enhance each other. It will be suggested that these two types of surveillance will continue to work alongside each other, which each being more useful in differing circumstances and therefore electronic surveillance will not replace the need for human intelligence. Main Body In recent years a combination of developing technology, concern about confession evidence and the changing nature of, especially, financial and drug-related crime has led the police and other law enforcement agencies to adopt increasingly sophisticated and intrusive, methods of investigation. Much of this has been largely hidden from public view and unregulated. Incorporation of the European Convention on Human Rights by the Human Rights Act 1998 will mean that privacy can only lawfully be interfered with if it is necessary to do so, and if it is carried out in accordance with law. The common law approach that the police can do what they want as long it is not prohibited by law is no longer acceptable. The Government introduced legislation or risk exclusion of evidence and challenge in both domestic courts and the European Court of Human Rights (ECHR). The result is the Regulation of Investigatory Powers Bill, covering the interception of communications, the power to demand communica tions data and decryption of unintelligible material, the use of covert operations and surveillance, and establishing a tribunal to deal with complaints. The scope of the warrant procedure is significantly expanded by the Bill since it will now include interceptions of private telecommunications systems, and will clearly cover the interception of mobile telephones, e-mails, and other computer communications. Under s. 26(3) of the RIPA intrusive surveillance occurs when a surveillance device is used or an individual is actually present on residential premises, or in a private vehicle, or it is carried out by such a device in relation to such premises or vehicle without being present on the premises or vehicle. Residential is defined in s. 48(1) of the RIPA as premises used as living accommodation, while premises includes movable structures and land. The definition excludes common areas of residential premises and clearly does not cover office premises (s. 48(7)(b)). Thus, covert surveillance of office premises falls within the term directed, rather than intrusive, surveillance. Section 26(3), read with s. 48(7), offers only a partial definition since it would cover all forms of covert surveillance taking place in relation to residential premises. Some forms of such surveillance can be treated as directed surveillance, as indicated below, and it is in relation to residential premises that an area of uncertainty is created as to the category into which surveillance falls. Under s. 32(3) of the RIPA authorisation of intrusive surveillance is on the grounds of the interests of national security, for the purpose of preventing or detecting serious crime or of preventing disorder, in the interests of the economic well-being of the UK. Proportionality requirements are introduced under s. 32(2): the authorising person must be satisfied that the action to be taken is proportionate to what is hoped to be achieved by carrying it out. Authorisations for such surveillance are granted by the Home Secretary under s. 41 or, for police or customs officers, by senior authorising officers, who are the highest ranking police officers. There is provision for the grant of authorisations in a case of urgency by persons of equally high rank, other than the senior authorising officer. (Christie v United Kingdom 78-A DRE Com HR 119) Under s. 36, the authorisation will not take effect until it has been approved, except where it is urgent and the grounds for urgency are set out in the notice, in which case the authorisation will take effect from the time of its grant. Under s. 38 senior authorising officers can appeal to the Chief Surveillance Commissioner against decisions of ordinary Surveillance Commissioners. The Commissioners have responsibility for the destruction of material obtained by surveillance, under s. 37, but there is no requirement that material no longer needed for proceedings and no longer subject to an authorisation must be destroyed. The provisions for authorisations under ss 33, 34, 35 and 36 mirror those under the Police Act 1997, Part III in that, under s. 35, notice must be given to a Surveillance Commissioner and, under s. 36, the authorisation will not take effect until it has been approved, except where it is urgent and the grounds for urgency are set out in the notice, in which case the authorisation will take effect from the time of its grant. Under s. 38 senior authorising officers can appeal to the Chief Surveillance Commissioner against decisions of ordinary Surveillance Commissioners. The Commissioners have responsibility for the destruction of material obtained by surveillance, under s. 37, but there is no requirement that material no longer needed for proceedings and no longer subject to an authorisation must be destroyed. Under s. 43 authorisations can be granted or renewed urgently orally by senior authorising officers or in writing by persons authorised to act on their behalf in urgent cases. If , under s. 43(3)(a), an authorisation is granted or renewed by a person entitled to act only in urgent cases, or was renewed by such a person or orally, it ceases to take effect after 72 hours. Section 42 provides special rules for the intelligence services which overlap with those of s. 5 of the Intelligence Services Act 1994. Under s. 42 the security and intelligence services can undertake intrusive surveillance on grant of a warrant. The grounds are under s. 32(3). As far as intrusive surveillance is concerned, the function of the services in support of the prevention or detection of serious crime is excluded where the application is by a member of GCHQ or the SIS. Under s. 44(3) a warrant authorising intrusive surveillance issued by a senior official, and not renewed under the hand of the Secretary of State, shall cease to have effect at the end of the second working day after its issue. In the case of other warrants that point will be at the end of a period of six months from t he day of issue or renewal. As is obvious from the most cursory examination of RIPA, the distinction between intrusive and directed procedures will be significant in all cases of covert activity because the level of authorisation required and the triggering conditions differ substantially. In the case of the police cell it is crucial, yet RIPA fails to provide an explicit classification of the cell in these terms. It is particularly disappointing that Parliament failed to pre-empt challenges to such an apparently widespread police practice by providing a definitive answer to this problem. It seems bizarre that in interpreting such a recent statute expressly designed to regulate covert activity the matter turns on peripheral matters of definition. The confusion on this point in RIPA cannot be underestimated: the Court of Appeal in Mason called for urgent clarification of whether the police cell is now governed by intrusive or directed surveillance under RIPA. Although the new Code of Practice issued under s. 71 of RIPA now suggests that cell bugging is intrusive surveillance, this is such an important issue for the suspect and apparently such a commonplace police technique that it is submitted that it ought to be dealt with on the face of the statute. The use of human beings to provide information is a valuable resource for the protection of the public and the maintenance of law and order. In order that local authorities and law enforcement agencies are able to discharge their responsibilities, use is made of ‘undercover’ officers and informants. These are referred to as ‘covert human intelligence sources’ or ‘sources’ and the area of work of undercover officers and informants to whom this procedure applies will be referred to as ‘source work.’ In 1999 the Association of Chief Police Officers (ACPO) and HM Customs and Excise published a set of Codes of Practice on Standards in Covert Law Enforcement Techniques. The Codes have no legal basis but are recognised by the police, HM Customs and Excise and the Government as providing authoritative guidelines, and these replace previous guidance issued by the Home Office. (See (www.homeoffice.gov.uk/ripa/ripact.htm).) As the accompanying Declaration on ethical standards and covert investigative techniques states, the working practices set out in the Codes seek to achieve a balance between the requirement to work within a defined framework for the safeguarding of civil liberties and the maintenance of a robust approach to the tackling of crime and criminality. In its reduced form the substance of this statement is a desire to ensure that covert techniques are fair and effective. (Murfield: 2001) Section 3 of this Code, Surveillance in or into Public Places, is of relevance to the type of operation considered here. This section is applicable to the planned deployment of covert surveillance resources against the public at large, in order to meet a particular law enforcement need, or against specified individuals in public places where no interference with property is intended. The Code goes on to provide that: Before giving authorisations for surveillance into public places where no unlawful interference with property is proposed, the authorising officer must be satisfied that the proposed surveillance is a reasonable means of achieving the desired result. Manna from heaven operations provide an opportunity to manipulate a combination of circumstances which may lead to an offence being committed. According to the widely accepted routine activity theory, offending is determined by the convergence in space and time of three factors: (i) a likely offender, (ii) a suitable target and (iii) the absence of a capable guardian. In the light of this obvious concerns arise over the planning of this type of operation as the police have varying degrees of control over all three factors. By choosing the location of the operation they have some influence over who may be exposed to the temptation offered, also over the presence of a capable guardian, and they have absolute control over the target, i.e. the type and value of the property used. The 1997 and 2000 Acts require the Chief Surveillance Commissioner to keep under review (with the assistance of the Surveillance Commissioners and Assistant Surveillance Commissioners) the performance of functions under Part III of the 1997 Act and Part II of the 2000 Act by the police (including the Royal Navy Regulating Branch, the Royal Military Police and the Royal Air Force Police and the Ministry of Defence Police and the British Transport Police), NCIS, the NCS, HMCE and of the 2000 Act the other public authorities listed in Schedule 1 and in Northern Ireland officials of the Ministry of Defence and HM Forces. The Intelligence Services Commissioners remit is to provide independent oversight of the use of the powers contained within Part II of the 2000 Act and the 1994 Act by the Security Service, Secret Intelligence Service, GCHQ and the Ministry of Defence and HM Forces (excluding the Royal Navy Regulating Branch, the Royal Military Police and the Royal Air Force Police, and in Northern Ireland officials of the Ministry of Defence. It is important to consider the effect that the human rights has on both electronic surveillance and human surveillance and its conflict with the RIPA. The substantive rights of Schedule 1 to the HRA may be said to fall into two groups. The first, which includes Article 6, covers a number of fundamental rights; they include the right to liberty under Article 5, the right to a fair hearing under Article 6(1); the presumption of innocence under Article 6(2); minimum rights applicable to everyone charged with a criminal offence under Article 6(3), including the rights to legal assistance of his own choosing and to examine or have examined witnesses against him and to obtain the attendance and examination of witnesses on his behalf under the same conditions as witnesses against him. Articles 8-11 and Protocols 1 and 6 may be said to cover a more developed conception of human rights; the rights provided include the right to respect for privacy under Article 8, and rights to the freedoms o f expression, association and assembly under Articles 10 and 11. Articles 8-11 indicate a structured approach to state interference with the guarantees. To be justified, such interference must be prescribed by law, have a legitimate aim, be necessary in a democratic society and be applied in a non-discriminatory fashion (Article 14). (Uglow: 1995) The European Court of Human Rights main concern has been with the necessary in a democratic society requirement; the notion of prescribed by law has been focused upon to some extent but usually with the result that it has been found to be satisfied. (See Malone v UK (1985) 7 EHRR 14) The legitimate aim requirement will normally be readily satisfied; as Harris, OBoyle and Warbrick point out, the grounds for interference (under paragraph 2 of Articles 8-11) are so wide that the state can usually make a plausible case that it did have a good reason for interfering with the right. (Harris et al, 1995 at p290) As has been demonstrated the use of electronic surveillance is complicated and heavily regulated. However it is useful and can work alongside covert human intelligent. It is worthy of considering some of the technicalities of the two forms of surveillance. There are some difficulties with electronics such as that it may not work and it can fail. However this can also be a problem with human covert surveillance in so far as the operations can fail, and the potential defendant can fail to be present, therefore there are equal difficulties with both of these methods of surveillance. Covert Human Surveillance will still require corroboration and can prove to be unreliable. The other difficulty that is raised in relation to covert human surveillance is its interaction with the human rights act. In the case of R v Lawrence, Hope, Stapleton, Stapleton, Bravard and May (3 August 2002, CA) this was considered. This was a case of VAT fraud, involving a loss of  £ 11 million. Evidence had been obtained by a covert surveillance device or probe which had been authorised under Pt III of the Police Act 1997. The appellants submitted before the Court of Appeal that the probe was a breach of Art 8 of the European Convention on Human Rights and that the provisions in the Police Act concerning intrusive surveillance were incompatible with the Convention. Dismissing the appeal, the court held that the probe did not breach Art 8. Covert surveillance was compatible with the Convention where it was authorised by law; such authority was provided by the Police Act. The surveillance was necessary in a democratic society for the prevention of disorder or crime. It was also proportionate. Article 8(2) was therefore complied with. The Police Act 1997 has been overtaken by Pt II of RIPA, which introduces regulatory procedures for various forms of surveillance which, until now, have had no basis in statute. RIPA provides for more stringent scrutiny than the Police Act. However, as with the Police Act and Art 8, Pt II of RIPA provides for no restriction on the use of evidence so obtained. Rather, RIPA is concerned with the various forms of surveillance described in s 26. Once authorised under s 27, the s 26 surveillance will be lawful in relation to that authorisation. Sections 28, 29 and 32 require that the covert surveillance be necessary and proportionate. Therefore in conclusion it is argued that the increased use of electronic surveillance is unlikely to lead to the demise of human intelligence sources, this assignment that the two work well together and that they are both heavily regulated. Regulation will ensure that the two will work together and that they will both enhance each other. It is suggested that these two types of surveillance will continue to work alongside each other, which each being more useful in differing circumstances Bibliography Cases Christie v United Kingdom 78-A DRE Com HR 119 Malone v UK (1985) 7 EHRR 14 R v Lawrence, Hope, Stapleton, Stapleton, Bravard and May (3 August 2002, CA) Legislation Intelligence Services Act 1994 Police Act 1997 Regulation of Investigatory Powers 2000 Regulation of Investigatory Powers (Covert Surveillance: Code Of Practice) Order 2002 (SI 2002 NO. 1933) Journal Articles S. Uglow, Covert Surveillance And The Echr [1999] Crim Lr 287. D. J. Harris, M. Oboyle and C. Warbrick, Law Of The European Convention On Human Rights (1995) At 290 P. Mirfield, Regulation Of Investigatory Powers Act 2000 (2): The Evidence Provisions [2001] Crim Lr 91 Books Feldman, Civil Liberties and Human Rights in England and Wales (2nd edn, 2002); S H Bailey, D J Harris D C Ormerod, Civil Liberties, Cases and Materials (5th edn, 2001); N Whitty, T Murphy S Livingstone, Civil Liberties Law: The Human Rights Act Era;

Computer Aided Learning: The way of the Future? :: Essays Papers

Computer Aided Learning: The way of the Future? As you look around at classrooms these days you may notice a trend. Computers are becoming more and more frequent each year. Teachers are using the latest technology to run power point presentations, streaming videos, and simulations that were never possible before. It ha becomes the new hallmark of teaching, allowing teachers to do more then ever thought possible. Companies have jumped on the bandwagon, selling aid to teachers and students. You can buy software for just about anything now a days. I know I had software for the SAT and ACT test that help considerably. But when do we have too much of a good thing? This is the debate that companies are going through, as well. Companies now have the choice of using normal human training or Computer-based training (CBT). Both have their advantages. Computer-based Training uses computer programs to teach without aid of a human instructor. Thus, you can get more people "efficiently" trained when they join the company, rather then waiting for the next training session. The premise of CBT, as stated by R. Scott Lawson in "Computer based training: is the next wave?", is an effective training medium. He goes on to say "Since the trainee directs his/her own progress through the material and actively participates by responding to prompts and questions, s/he pays greater attention to the subject matter." (Lawson sec.1 par.3) Also in this article Mr. Lawson describes the process of a CBT. The CBT gives a Pre-test. This test judge how much the trainee already knows on the subject matter. This pre-test helps the program customize itself for the trainee. Also test are taken to periodically to test the progress of the trainee. Another advantage of CBT is the bookmark feature. This allows you to stop and start the training at any time and get back to it later. Also you can customize your CBT program with company specific information, videos, and objectives. (Lawson sec. 2) The hopes of CBT are that the trainees retain the knowledge better then if taught by a human. In the article "Computer training vs. human instruction," by Holly Ann Suzik, Roger C. Schank was quoted as saying, "By and large, [human teachers] stand up in front of you and yak at you. And every body falls asleep. The sense that live humans are better teachers is a nice myth, because we don’t want to change.