Hamlet And Ophelias Weaknesses Essays - Characters In Hamlet

Hamlet And Ophelia's Weaknesses Ophelia's Weaknesses In classic works of literature all characters have certain flaws. In Shakespeare's tragedies the characters all have flaws that eventually lead to their undoing. In the play Hamlet, by William Shakespeare, the character of Ophelia is ultimately killed by her flaw. It is apparent that Ophelia is an obedient person through her thoughts and actions in the beginning of the play, but upon closer inspection, the audience sees that she is not merely obedient. Ophelia's thoughts and actions go beyond obedience to show that Ophelia is a weak and entirely dependent character. Ophelia's cruel actions towards Hamlet, which go against her feelings for him, demonstrate her obedience to her father. For example, in the beginning Ophelia tells her father that she likes Hamlet: "My lord, he hath importuned me with love/ In honorable fashion..."(1.3 118-119). By stating this to Polonius, she implies that Hamlet is a decent and honorable man and that she does have some feelings for him. Ophelia's later actions sacrifice these personal feelings under the order of her father, proving her complete obedience. In particular, Ophelia agrees not to see Hamlet anymore after the request from her father: "I shall obey, my lord..."(1.4 145). Ophelia's actions show that Polonius has complete control over his daughter because she sacrifices her personal feelings to please him. Ophelia's desire to please her father is the direct cause of her obedience. Thereafter, upon having agreed not to see Hamlet, Ophelia allows herself to be used as a puppet in order for the King and Polonius to spy on Hamlet: "Ophelia walk you here / We will bestow ourselves..." (3.1 48-49). Ophelia has an inward desire to please others, even if it means displeasing herself, and her obedience stems from this. Ophelia's drastic actions must come from something other than obedience, something such as her character. Ophelia's obedience goes deeper than her trying to please to father and shows what a weak character she is. Ophelia's thoughts and actions show what a weak character she is. For instance, when Hamlet harasses her and tells her to go to a nunnery where she can no longer harm anyone, she does not defend herself but, after he is gone, she pities herself: "O woe is me t' have seen what I have seen / see what I see..." (3.1 174-175). Ophelia is not a strong enough person to defend herself, even when Hamlet is mocking everything that she is. Ophelia's "woe is me" pity comes from the fact that she barely is reprimanded because she always tries to please others. Furthermore, when Polonius dies, Ophelia loses her primary guidance and, instead of attempting to go on with her own life, she calls on her brother for help in resolving her problems: "My brother shall know of it / and so I thank you for your good counsel..." (4.5 75-76). Ophelia suffers and basically collapses once her father dies because he has always been there to instruct her, and now she is left to her own guidance. Ophelia is not strong enough to survive by herself, and upon her self-recognition of this fact, she calls for her brother's help and guidance. Polonius's controlling manner is unreplaceable and Ophelia soon realizes this: "I would give you some violets / but they withered all when my father died..." (4.5 207-208). Violets are a known symbol of faithfulness, this is why Ophelia says that the violets are gone, because she feels betrayed that her father has left her. Polonious's overbearing influence on Ophelia stunted her emotional growth by only allowing her to think and feel what she was told to. Ophelia's obedience and weakness as a character can be traced to her complete dependence on other people. Ophelia's actions can be explained by the fact that she was completely dependent on other people. In fact, Ophelia's dependence on others is evident in the very beginning: "I do not know, my lord, what I should think. POL: Marry, I will teach you. Think yourself a baby..." (1.3 113-114). This shows how Ophelia depends on her father to determine what she should think and feel, and how she should live her life. Ophelia's complete dependence, or lack of independence, is what leads to her demise. For this reason, when the Queen is explaining her death, she says, "At which time / she chanted snatches of old lauds / as one incapable of her own distress or like a creature / native and endured unto that element..." (4.7 202-205). Ophelia is completely incapable of helping

Defining Histology and How Its Used

Defining Histology and How It's Used Histology is defined as the scientific study of the microscopic structure (microanatomy) of cells and tissues. The term histology comes from the Greek words histos, meaning tissue or columns, and logia, which means study. The word histology first appeared in a 1819 book written by German anatomist and physiologist Karl Meyer, tracing its roots back to 17th-century microscopic studies of biological structures performed by Italian physician Marcello Malpighi. How Histology Works Courses in histology focus on the preparation of histology slides, relying on previous mastery of anatomy and physiology. Light and electron microscopy techniques are usually taught separately. The five steps of preparing slides for histology are: FixingProcessingEmbeddingSectioningStaining Cells and tissues must be fixed to prevent decay and degradation. Processing is required to prevent excessive alteration of tissues when they are embedded. Embedding involves placing a sample within a supporting material (e.g., paraffin or plastic) so small samples can be cut into thin sections, suitable for microscopy. Sectioning is performed using special blades called microtomes or ultramicrotomes. Sections are placed on microscope slides and stained. A variety of staining protocols are available, chosen to enhance the visibility of specific types of structures. The most common stain is a combination of hematoxylin and eosin (HE stain). Hematoxylin stains cellular nuclei blue, while eosin stains cytoplasm pink. Images of HE slides tend to be in shades of pink and blue. Toluidine blue stains the nucleus and cytoplasm blue, but mast cells purple. Wrights stain colors red blood cells blue/purple, while turning white blood cells and platelets other colors. Hematoxylin and eosin produce a permanent stain, so slides made using this combination may be kept for later examination. Some other histology stains are temporary, so photomicrography is necessary in order to preserve data. Most of the trichrome stains are differential stains, where a single mixture produces multiple colors. For example, Malloys trichrome stain colors cytoplasm pale red, the nucleus and muscle red, red blood cells and keratin orange, cartilage blue, and bone deep blue. Types of Tissues The two broad categories of tissues are plant tissue and animal tissue. Plant histology usually is called plant anatomy to avoid confusion. The main types of plant tissues are: Vascular tissueDermal tissueMeristematic tissueGround tissue In humans and other animals, all tissue may be classified as belonging to one of four groups: Nervous tissueMuscle tissueEpithelial tissueConnective tissue Subcategories of these main types include epithelium, endothelium, mesothelium, mesenchyme, germ cells, and stem cells. Histology may also be used to study structures in microorganisms, fungi, and algae. Careers in Histology A person who prepares tissues for sectioning, cuts them, stains them, and images them is called a histologist. Histologists work in labs and have highly refined skills, used to determine the best way to cut a sample, how to stain sections to make important structures visible, and how to image slides using microscopy. Laboratory personnel in a histology lab include biomedical scientists, medical technicians, histology technicians (HT), and histology technologists (HTL). The slides and images produced by histologists are examined by medical doctors called pathologists. Pathologists specialize in identifying abnormal cells and tissues. A pathologist can identify many conditions and diseases, including cancer and parasitic infection, so other doctors, veterinarians, and botanists can devise treatment plans or determine whether an abnormality led to death. Histopathologists are specialists who study diseased tissue. A career in histopathology typically requires a medical degree or doctorate. Many scientists in this discipline have dual degrees. Uses of Histology Histology is important in science education, applied science, and medicine. Histology is taught to biologists, medical students, and veterinary students because it helps them understand and recognize different types of tissues. In turn, histology bridges the gap between anatomy and physiology by showing what happens to tissues at the cellular level.Archaeologists use histology to study biological material recovered from archaeological sites. Bones and teeth are most likely to provide data. Paleontologists may recover useful material from organisms preserved in amber or frozen in permafrost.Histology is used to diagnose diseases in humans, animals, and plants and to analyze the effects of treatment.Histology is used during autopsies and forensic investigations to help understand unexplained deaths. In some cases, a cause of death may be evident from microscopic tissue examination. In other cases, the microanatomy may reveal clues about the environment after death.

Ethics Essay Example | Topics and Well Written Essays - 1000 words - 6

Ethics - Essay Example Broader ethical issues are determined by society rather than the individual. For example, most people would agree that it is wrong to steal. There is really no way that someone can justify that, even though they might be in an extreme situation. On the other hand, a personal ethical decision is based on one's own experiences and thoughts. For example, I believe that it would be wrong to cheat on an exam, but there may be others that differ from that opinion. My belief about that comes from the way I was raised and also the fact that I believe that exams are a time to gauge one's ability, and cheating gives a false representation of this. Finally, there are ethical choices based on a personal circumstance or situation. Someone who is poor may justify taking money left unattended to because they desperately need it. Other people who are not in need of cash are more likely to try and return it to the owner. Personally, I make most of my decisions based on my values and religious beliefs but also my gut feel. If an action does not feel right, then I probably shouldn't be doing it. I closely follow the principle of utilitarianism because I think that any ethical decision must consider all the parties that will be affected by the action. Just because I benefit from an ethical decision does not mean that other people will also benefit, so it is important to weight all these factors up before making an ethical decision. ... On the other hand, those of questionable moral character have likely only acting ethical on certain occasions, if at all. I believe that even if the possibility of being caught is extremely low, it is still important to act ethically because it sets a right mindset. There is a saying that goes "set a line in the sand." What this means is that we need to have boundaries of how far we are willing to go. Just because no one else will know or the likelihood of being caught is low does not mean that we should get rid of or move the line in the sand. Acting ethically at all times helps to breed consistency, and this will hold us in good stead when it really counts. I believe that decisions we make in secret are actually more important than those we make in public because they help to show our true character. I believe that if there was no possibility of detection, then most people would likely not pay their taxes. These types of people would justify their decision based on the fact that no one else would find out. Money is a subject that divides many people because of the power and status it brings. I do agree that individuals act in their own economic self-interest because we live in a capitalistic society where hard work and success are valued. Thus everyone wants to get ahead, and if not paying taxes can help then so be it. I do however think that most of those people who would avoid paying tax if they could get away with it would not openly admit to thinking that. The reason is that the process of paying tax is one of the most basic in our society and one of the greatest responsibilities of every working citizen. For those who would still pay their taxes even if they could get away with not paying them, I

Satellite Centers Essay Example | Topics and Well Written Essays - 750 words

Satellite Centers - Essay Example The initial paragraph of the agreement states, â€Å"This Satellite Center will be responsible for establishing a knowledge of and capacity for initiating and supporting accelerated schools for at-risk students in its local school district and to spread this capacity to schools in districts in surrounding areas. The Stanford staff will work with the Satellite Centers to build this capacity and all activities will be geared to that end† (Satellite Center Agreement, 1990). The Satellite Center approaches to Accelerated Schools for a number of reasons. Prominent among these was the desire to get leverage by establishing local capacity and advocacy that would be far more effective with school systems in a specific locality than would be a program operating out of a single national site, We also wanted to try to provide the conditions and incentives for teacher and administrator training programs to transform their activities in conjunction with the hands-on transformation of the schools they would be working with. The Satellite Center Project has a number of objectives (Satellite Center Agreement, 1990) which may be grouped together into three major goals. The first goal of the project is for the Satellite Centers to become the focus for Accelerated Schools training, evaluation and facilitation in their geographic area. They win serve as a vehicle for implementation for many different educational entities desiring to participate in the Accelerated Schools Project. They are expected to provide a forum for the promotion and understanding of accelerated schools through the sponsorship of and participation in conferences and the production of and contribution to publications. Accordingly, Satellite Centers are also expected to revise their teacher education programs to include the Accelerated Schools principles and processes in the curriculum in meaningful ways and to place student observers,

Leadership, Innovation & Change Essay Example | Topics and Well Written Essays - 750 words

Leadership, Innovation & Change - Essay Example This was used by his father, a dental practitioner to communicate with his receptionist while the family also used it for communicating at home. Seeing his interest in computers, his parents hired David Newman to work once a week with Mark Zuckenberg but Newman found it hard to stay ahead of the prodigy. Mark Zuckenberg later studied at Phillips Exeter Academy where he excelled in literature, showed talent in fencing and also earned a diploma in classics. However, all through, he remained fascinated by computers. While still in school, he created the music software Pandora, which he named Synapse. After graduating from Exeter, Mark Zuckenberg joined Harvard University where he developed several software programs for fellow students such as CourseMatch (students could choose their classes) and Facemash (helped compare pictures of two students). The birth of Facebook has its origin in the social networking site Harvard Connection for which he was invited to work on by three fellow students (Biography, 2012). Mark Zuckenberg did work for a while but soon dropped it to start his own networking site along with two friends. This site allowed others to create profiles, upload photos and communicate with others. The group ran the Facebook out of their dorm at Harvard until June 2004. After the sophomore year, Mark Zuckenberg left Harvard to devote full time to Facebook and by the year end Facebook had 1 million users. In August 2005, the site was officially called the Facebook and the domain name was purchased for a reported $200,000 (Yadav, 2006). In 2005 Mark Zuckenberg received an investment of $12.7 million from Accel Partners which gave the platform a big boost. By December 2005 the site has 5.5 million users as Mark Zuckenberg granted access to other colleges, high schools and international students. Mark Zuckenberg received offers from Yahoo! And MTV Networks to buy his company, which he declined. Mark

Fly by Light in Aircraft Systems Analysis

Fly by Light in Aircraft Systems Analysis Fibre optic cables are widely used in telecommunication and network. It is known for its properties which is lighter than standard copper wire, able to carry multiple signals in single cable, no electrical current involved in the cable, cheaper than copper cable because it is made from silica (glass), and does not List of abbreviations FBW- Fly-by-Wire FBL- Fly-by-Light 1.1 OVERVIEW At the early stage of aviation, aircraft utilized cables and pulleys for controls also known as mechanical linkage. This cables and pulleys act as pull and push system to move the flight controls surfaces at the expense of the pilots effort. By using the cables and pulleys, every forces act on the flight control surfaces are being transmitted to the cockpit control and felt directly by the pilots which they have to counter these forces using their own strength without any assistance. Early aircraft were lightweight and the aircraft can only fly at a slower speed thus aerodynamic force is not strong making it possible to manoeuvres the aircraft. With new emerging technology and war at that time, air superiority has become an advantage. Aircraft needs to fly faster, carry more payload and strong. This is when hydraulic systems plays an important role in aircraft control system. By using hydraulic systems, aircraft can fly faster due to the pilot does not have to put extra effort to move the control surfaces with increasing aerodynamic forces. Hydro-mechanical control system is a system which mechanical linkages are connected to the hydraulic system. This system utilized cables, pulleys, and gears at the cockpit control and hydraulic system consist of pipes, reservoir, valves and pumps at the control surfaces. With hydro-mechanical system, the aerodynamic forces acting on the control surfaces are not felt by the pilots making it easy to controls. Stick shaker and artificial feedback are the methods to replicate the aerodynamic forces acting on the control surfaces to the cockpit control. It was to ensure that the pilot does no t manoeuvre the aircraft beyond its limitation. Although the hydro-mechanical system gives a plenty advantages to the pilot, it was deemed as heavy, hard to maintain and not practical for larger aircraft as the cables would have to run over a long distance of aircraft fuselage. Commercial aircraft nowadays are bigger, faster and fly higher than before. Hydro-mechanical control system might not able to accommodate the complicated and sensitive controls made for passengers comfort. Nowadays, majority commercial airliners use Fly-by-Wire system. FBW system replaces the cables, pulleys and gears with copper wires which carries electrical signals from the cockpit control to the control surfaces. FBW eliminate the needs to maintain the cables, pulleys or the gears thus reducing weight of the aircraft. FBW is very efficient due to it being electronically control by computers which manage the autopilot system and aircraft system. Although FBW is considered as the best option available today, it is still needs to be upgrade. Copper wire can only carry one signal for each wire which means for a single system that might needs four signals, it needs four copper wires. Due to this nature, typical aircraft with FBW will have a bundles of copper wires and for maintenance side, working with bundles of wires takes time and lot of manpower. FBW system is still considered to be heavy due to the amount of copper cables involved and caging due to susceptible to electromagnetic frequency. Fly-by-Light is a technology that might be the answer for future aircraft development. FBL technology is not a new thing but the research is slowly progress as it still being tested and research since the 90s. Although FBL might not be implemented in near future but the concept have been use in todays inflight entertainment system which utilized fibre optic cable to cater all passengers preference. 1.2 IMPORTANCE OF THIS STUDY In the world of aviation, safety comes first, revenue comes second and followed by everything else. The information gather in this study might prove that FBL has potential for future aircraft development. Aircraft manufacturers and aviation operators such as airline companies and private sectors always be look into more reliable aircraft, weight-fuel saving and easy to maintain. This study will prove whether it is possible or not to replace the old fly-by-wire system with new fly-by-light system and offer more advantages. 1.3 AIM AND OBJECTIVES The aim for this study is to investigate whether fly-by-light is the future for aircraft system and how it will affect the traditional maintenance practice. In order to complete this study and to achieve the aim as stated, few objectives must be completed such as: To discuss the advantages and disadvantages of using fibre optic cables over standard copper wire on commercial aircraft and military aircraft. To discuss the development and potential of fly-by-light on aircraft system. To show the complication of using fly-by-light system on commercial and military aircraft. To find out whether it will be more cost effective for aircraft manufacturers to manufacture new aircraft system in future aircraft development. To find out the cost and its effect on traditional maintenance practice. 1.4 HYPOTHESIS Technology advancement always research for a new alternative to make aircraft lighter, lower cost and increase reliability. Fly-by-wire system manage to make modern airliners bigger, fly higher, more reliable, save cost and increase in revenue. If fly-by-light system is going to replace the FBW system in the future, commercial and military aircraft will see a lot of improvement in terms of fuel saving due to weight reduction, faster response rate and more simple system installed that is easy to manufacture and maintain. Fly-by-light may not be the system in near future due to the nature of fibre optic technology that is not suffice to withstand aircraft environment but with improvement and further research into fibre optic technology, Fly-by-light soon will replace the fly-by-wire system. 1.5 LIMITATION The main purpose of this study is to do a research whether fly-by-light system might replace the fly-by-wire system in the future. It does not discuss about implementation or direct costing which may involve specific value because this system is yet still under research and development. Any costing stated in this study is mainly an estimation based on current market value. 2.1 Overview Todays aircraft have shown a significant improvement in flight control system. Boeing 787 and Airbus 380 have successfully flown on a fully fly-by-wire system independently. Having the flight control system runs solely on electrical power, the respective aircraft have managed to change every aspects that are common to previous aircraft. Boeing 787 and Airbus 380 are using no-bleed engine as the flight control system now run on electricity, the actuators hydraulics are being pumped by electrical pump and air-conditioning are also run on electrical power. This technological advancement have yet to have its downside which is the aircraft require a lot of shielding in order to protect the electrical system from electromagnetic interference or EMI. The shielding to keep the EMI at minimum have its own disadvantage because shielding is heavy and it makes it hard to access during maintenance.ÂÂ   It might be a success for fly-by-wire system in Boeing 787 and Airbus 380 but by understan ding of what FBL can offer for further aircraft development is very promising. 2.2 FLY-BY-LIGHT AS NEW EMERGING TECHNOLOGY FOR AIRCRAFT SYSTEM 2.2.1 Advantages of using fibre optic cables over copper cables Fibre optic cable is made up of bundle of glass strands coated in insulated cover. Fibre optic cables nowadays widely used for networking and communication as it offers many advantages over copper cables. According to Collins (2015) here is the advantages of using fibre optic cables: BANDWIDTH Fibre optic offers high bandwidth compared to copper wire. High bandwidth means that fibre optic cables are capable of carrying multiple signal over one cable instead of one signal over one wire with copper wire. Aircraft system sends multiple signals for one flight control and using conventional copper wire in FBW system, it needs a bundle of wires just for one flight control. Using fibre optic cable to replace copper wire will reduce significantly the amount of copper wire thus reducing the weight of the aircraft. HIGH SPEED By understanding the concept of fibre optic cable, it has a faster signal transfer rate compare to copper wire. Fibre optic cable carries light signal in which the speed of light travels much faster than electrical current in copper wire. DISTANCE Fibre optic cable capable of carrying signal on longer distance without degrading the quality of the signal as the light have less susceptibility to signal lost during transmission. It does not require any step up or step down voltage like copper wire does. SECURITY Copper wire are easily tap into and less secure compared to fibre optic cable. Electrical signal in a copper wire are also easy to be change by intercepting the signal and can be done by non-professional. Whereas fibre optic cable are made from glass strands which makes it incredibly difficult to intercept the signal without breaking the cable. Even with professionals, the cable are very challenging to intercept midway and if it were done at the source, it is still very tough to change the signal without the proper equipment. RELIABILITY Copper wire and fibre optic cable both susceptibility to worn out over time but instead of posing a fire hazard like copper wire does, fibre optics does not pose any risk of fire hazard as it only carries light signals. Temperature, moisture and severe weather condition could cause copper wire having signal loss or even complete loss of connectivity but it does not happen with fibre optic cable. In terms of studier, fibre optic cable can withstand around 100-200 lbs. of pressure without damaging the cable while copper wire typically are delicate and enough to withstand only at about 25 lbs. of pressure before damaging the wire. CABLE SIZE Higher amount of connections require more copper wire to be able to process all the signals at a higher speed as copper wire performance in signal transferring is directly connected with the cable size. Fibre optic cable size does not determine by the size of the cable and by that, it can be used for multiple signals transfer without affecting the speed or the quality of the signal. Fibre optic cable are much simpler to use and relatively lighter than copper wire. COST Although fibre optic cable today are still considered as more expensive than copper wire in a short term but with it being lighter, more reliable, and much better performance than copper wire makes it a valuable investment for a long run. Fibre optic cable are also easy to maintain which in turn less cost needed. IMMUNE TO ELECTROMAGNETIC INTERFERENCE (EMI) Copper wire carries electrical signal which runs through in bundles of wire in close proximity. When electrical signal flow through a wire, it creates an electromagnetic field. Electrical signal are easily affected by electromagnetic field which then deteriorate the signals. Not only had it affected by its own electromagnetic field, it is also affected by electromagnetic frequency given out by other electronic devices such as a hand phone, microwave, or even lightning strike. Using light signals by fibre optic cable, it does not create any electromagnetic field or affected by other electromagnetic frequency. Being immune to EMI, fibre optic cable does not require shielding as copper wire does. No shielding means an extra weight loss using fibre optic cable rather than copper wire. 2.2.2 INSTALLATION OF FIBER OPTIC CABLE ON AIRCRAFT According to Garg, Linda and Chowdhury (2014), FBL system will follows the same concept as the FBW system except for FBL, the sensors will be replaced with optical rather than standard electrical or electronic as on FBW system. All the cables routing will be no different than copper wire in FBW but with added advantage of using less amount of fibre optic cable because it is capable of transmitting more than one signal per cable making it lightweight and its immune to EMI needs no shielding thus reducing weight even further. In order to change all the sensors and actuators into optical, Photonic Controlled Actuation System or PCAS is introduced. This actuator system is a modified version of standard Electro Mechanical Actuator or EMA but with added optical controller that commands EMA. The signal that being sent to EMA is the same signal sent by the flight control computer. In order for the EMA to received and react to the signal, the engineers have modified the EMA to make sure the signal sent via light from the optical controller is readable. As the PCAS will utilized light signal to react, all other sensors such as the actuator position, motor position and current are replaced by optical sensors. Figure 1: Fly-by-Wire standard wire routing in aircraft (ICCCI, 2014) Figure 2: FBL utilized the same cable routing as the FBW but with reduced cable amount (ICCCI, 2014) 2.2.2 FLASH PROGRAM FOR RESEARCH AND DEVELOPMENT Based on John R Todd (1996), during the mid-1994, McDonnell Douglas team start working for two years project called the Fly-by-Light Advanced System Hardware Program or also known as FLASH Program. FLASH program was initiated to develop a reliable and cost effective FBL system and hardware for aircraft in military and commercial. This FLASH program aims to be able to demonstrate the FBL system use on aircraft specifically. In summer 1996, the team was able to put on two demonstration of aircraft using FBL system. Ground demonstration with the FBL system on a partial flight control system and during flight demonstration, aileron trim control system was replaced with FBL system. The FBL system that was installed on the test aircraft was built on open architecture platform which have its own advantage. 2.2.2.1 OPEN ARCHITECTURE CONCEPT In the computer industry according to Computerhope.com (2017) the definition of open architecture is an open platform and was built on common platform so that any hardware and software can be use, reconfigure or modified to fit the platform such as the IBM computer. In aviation, Flexible Vehicle Management System or flexible VMS is the same as open architecture used in computer industry. Flexible VMS means that the aircraft system will be built on base platform using common hardware and software which can be expanded, outsourced and reconfigured to fit any aircraft system platform be it in commercial or military configuration. The benefit of having open architecture in flexible VMS will encourage more development on a system and more integration of new role with potential growth. Other benefit from using an open platform in flexible VMS is it will reduce cost significantly as the platform will use a very identical and same modular blocks so there is no need for further research for n ew platform every time new idea and innovation present itself. Future aircraft system such as the FBL system can be built on open architecture which not only save cost for development but also time. By using open architecture concept on flexible VMS, the McDonnell Douglas Aircraft Control and Avionics System or ACAS has managed to expand and contracted a single platform to fit new FBL system according to the need of transport aircraft with various size and shape. Using the flexible VMS for ACAS has managed to maximize the commonness and the ability to share hardware on any platform regardless of the commercial aircraft or the military aircraft while keeping the development cost down and save time. The ACAS architecture is also part of the FLASH program to develop and built sustainable and reliable FBL system in future aircraft system. 2.2.2.2 MAJOR ASPECTS IN FLASH PROGRAM As stated by John R. Todd (1996), FLASH program consist of two major aspects that is needed to achieve. The first major aspects of FLASH program responsibility is to develop integrated fibre optic cable plants and every components needed to make it work. The first development focuses on producing reliable cable plants and its components and also to figure out the installations procedure as well as the maintainability of the new system components. The cables and components must be able to withstand aircraft environment to fit the purpose. This aspect of development has been assigned as TASK 1A. Major associate with MDA-TA for TASK 1A in the FLASH program was Berg Electronics. TASK 2A is the advancement from TASK 1A development where the cable plants and components that were developed and produced in TASK 1A were used to demonstrate FBL system on flexible VMS. Honeywell as the major team mate along with HR Textron, GEC-Marconi and Allied Signal were involved in the development of TASK 2A as the effort of develop and implement the new FBL system on aircraft. The team have managed to produce and develop the main flight control fibre optic data bus system, Fly-by-Light primary flight control computers (PFCs), a representative remote terminal/ distribution unit (RDU) which is a smart actuator with low cost fibre optic data links to the RDU and lastly, a flight test done on the FBL aileron trim system. Figure: TASK 1A and TASK 2A in FLASH Program FLASH Task 1A successfully developed high density fiber optic ribbon cable and connectors that passed the aircraft environment test and deemed as flightworthy. This ribbon cables and connectors will be the backbone of the FBL system for aircraft control system. Single-fiber fanout assembly, conduit systems including clamps, splitters and connector backshells were also developed by Task 1A for FLASH program. MDA Advanced System Technology also responsible in developing a safe and reliable installation procedure as well as maintenance procedure that are cost effective for both manufacturer and clients. Increased reliability and maintainability also ensure a reduction cost in installation and maintenance labour. AVMAC was the high density fiber optic connector being developed by Task 1A under the FLASH program that was meant to be the termination of fiber optic ribbon cable. The ribbon cable is basically constructed using 18 fibers arranged into linear arrangement into one ribbon.ÂÂ   The advantage of having the fiber optic ribbon cable for FBL system is that the ribbon cable can provide several optical fiber in one small integrated package apart from bundles of copper wires as in FBW system. Although the fiber optic ribbon cable consist of 18 optical fibers, the physical aspect and appearances of the ribbon cable is not far from a single channel fiber optic cable. The ribbon cables are also has been classified as flight qualified by MDA AST which met all the aircraft environment specifications, mechanical requirements and optical requirements set forth by MDC specifications. The ribbon cable is not develop only for 18 optical fibers installation but it can be reduce or increase accord ing to the requirement but Task 1A team considered 18 optical fibers is the best option and suitable for FBL system on aircraft. Identical to fiber optic ribbon cable assembly is the optical fan-out assembly. The difference between these two cable is one of them carries all 18 optical fibers in one protective casing and the other one converts the package into 18 individual fiber optic channel. Fan-out assembly designs and material use is the same as the ribbon cable assembly but fan-out assembly use to separate 18 optical fibers into single channel so that each single optical fiber channel can be routed to several locations on aircraft. During FLASH task 1A, the team encountered many challenges to ensure the reliability of the installation and maintenance for fiber optic cable. One of the option they selected was using a tube to house the fiber optic cable. This tube is a conduit that is made up of clear plastic tubing. The conduit is the best option to safe guard the fiber optic cable since it is also lightweight and with the added benefit of it being easy to replace, remove or add fiber optic cable with ease. Maintenance wise, this clear plastic conduit is relatively transparent makes it easy to detect any damaged fiber optic cable using a laser fault finder. The team also develop a special connector which is the backshell or the conduit adapter to ensure the conduit is easy to access and protect the fiber optic cable. Task 2A for FLASH program is to develop and installation of the flight control using FBL system using parts and components produced by Task 1A. Task 2A will be responsible to put on FBL system onto test aircraft but limited to certain flight control surfaces for ground and flight demonstration. Ground demonstration team for Task 2A have managed to develop and installed the main flight control fiber optic data bus system, the FBL primary flight control computers or the PFCs, a remote terminal/ distribution unti or the RDU and a smart actuator along with an affordable fiber optic data link to the RDU. The demonstration from ground team for Task 2A will validate whether the aircraft closed loop system with FBL installation will function accordingly.ÂÂ   The ground demonstration covers all ACAS architecture including: Active Hand Controllers (AHCs), Primary Flight Control Computers (PFCs) the optical data buses (ARINC-429 and AS-1773A). a smart actuator for spoiler, an intelligent Remote Distribution Unit (RDU), and AVMAC connector that Task 1A previously developed. According to John R. Todd et al (1993), the real challenge of FBL system is the installation process and maintenance that needs to be done just like any other systems. MDA-TA/DAC have come up with few options on how to install and maintain the FBL system on aircraft. Some of the options are modification of present product and some of it are an improvement from previous product to suit with fibre optic and the FBL system. FIBER OPTIC TRAY INSTALLATION As FBW nowadays advances into more electrical aircraft, the amount of copper wire increasing to cater huge demand of electrical system. Aircraft manufacturer have come up with the idea of tray installation which provide a specific compartment to install all the wiring to ease the work for maintenance by separating each compartment according to their function.ÂÂ   Figure below is the example of tray installation concept being use for FBW system. Figure: Example of tray installation for fibre optic/wire on aircraft This tray installation concept from FBW system will give more advantage for FBL system due to the reduction of the numbers of interconnects making FBL configuration more practical and effective. CONDUIT ASSEMBLY All of MDA-TA/DAC production aircraft utilized conduit assembly which is basically a clear tubing. The main purpose of this conduit is to provide extra security to the cables where work is done on a tight spacing and less work area. If the conduit is accidently bent, the tubing will always maintain a safe bending radius and prevent any physical damage to the cables. The tubing is also lightweight and very durable which adds another advantage. Using the conduit assembly, hybrid configuration may be achieve by combining both electrical and fibre optic cable into a same conduit.ÂÂ   The following figure will show the examples of conduit assembly as MDA-TA/DAC are using on their production aircraft. FIGURE: Flexible Conduit for Fibre Optic Installation ACTIVE OPTICAL CONTACT Active Optical Contact or AOC is an active optical device that is embedded into the electrical contact point or connector shell. This type of installation basically use standard electrical connectors but inside the connectors, the electrical signal from transmitter is being converted into light signal and send through fibre optic cable which will reach the end of the cable in the form of light signals. This light signals then will be converted into electrical signal inside the receiver connectors which also have the embedded optical device. The AOC will act as the connector between two electrical signal port that is the transmitter and the receiver but will be sending the signal in the form of light signal via fibre optic cable. This results in no optical contact between transmitter and the receiver thus eliminating the need of extra devices at the end of both port to convert light signal into electrical signal. FIGURE: Active Optical Contact FIGURE: Example of AOC working principle (https://www.slideshare.net/allanlee/sfp-trrx-selection-guidejan2014) AVIONIC MULTIFIBER ARRAY CONNECTOR (AVMAC) Multifiber Array Connector II or MACII that was being use is going to be replace with the new Avionic Multifiber Array Connector or AVMAC. The new AVMAC was developed with ATT with the purpose of upgrading the old MACII for fibre optic connection. The main function of new AVMAC is to be the termination point of fibre optic ribbon assembly. Ribbon fibre is basically a group of fibres, 12 or 18, arranged into a linear array. This ribbon fibre will be jacketed, wrap with buffer coat and strength member which will be very similar to the single channel fibre as MDA/TA-DAC approved. The AVMAC is a device which will connect the array of fibre in the ribbon to hold each individual fibre so that it can be align and easier to install to the other mating half. Figure: Cross-sectional of ribbon fibre assembly which consist of 12 fibre optic cables. SPLICES During maintenance and installation, fibre optic needs to be splice to fit. After testing several fibre optic mechanical splices and only two mechanical splices that achieved MDA/TA-DAC approval. Although the two mechanical splices is considered to date fit their installation and maintenance approach, it is still cannot withstand the aircraft environment and none is consider as the right mechanical splices for aviation grade quality. The reasons for this result came from several points of the disadvantage of using market-ready mechanical splices in aircraft environment. First reason, fibre optic cable need to remove the buffer and the strength member in order to do splicing. If the buffer and strength member removed from the cable, every mechanical protection for the glass fibre ends at the splicing. Second, having the glass fibre exposed to the atmosphere, moisture in the air will get into the micro-cracks that naturally exist and will further expand the severity of the cracks into larger cracks. Increase in optical power loss as the micro-cracks elongated and propagated. Lastly, apart from previous problems with market-ready mechanical splices, it is also imposed a fire hazard due to this fusion splicing creates spark while being use on aircraft. Regulation made it clear that any devices that create spark or open flame are not permitted on fuelled aircraft. Due to the disadvantages mentioned, MDA-TA has develop their own designs for their fibre optic mechanical and chemical bond splices. The new invention of splices/connectors would be a small, one piece construction that is lightweight and could withstand aircraft environment. The new connectors that were design with environmentally sealed construction should be accepting a single mated pin and socket termini for either fibre optic cable or standard copper wire. The connectors is very adaptable and can be install anywhere directly onto fibre optic cable that might need repairs such as a splices, modification or maintenance purpose. Next figure will show the example of the newly design connectors to fit aircraft usage and regulation. Figure: Fibre Optic/ Electrical Single-Channel Splice/ Connector/ Feedthrough Contents ABSTRACT Part 1: INTRODUCTION 1.1 OVERVIEW 1.2 IMPORTANCE OF THIS STUDY 1.3 AIM AND OBJECTIVES 1.4 HYPOTHESIS 1.5 LIMITATION Part 2: Literature Review 2.1 Overview 2.2 FLY-BY-LIGHT AS NEW EMERGING TECHNOLOGY FOR AIRCRAFT SYSTEM 2.2.1 Advantages of using fibre optic cables over copper cables 2.2.2 INSTALLATION OF FIBER OPTIC CABLE ON AIRCRAFT 2.2.2 FLASH PROGRAM FOR RESEARCH AND DEVELOPMENT 2.2.2.1 OPEN ARCHITECTURE CONCEPT 2.2.2.2 MAJOR ASPECTS IN FLASH PROGRAM

Australian and American Female Nurses in the Armed Forces Essay

Australian and American Female Nurses in the Armed Forces To what extent were Australian and American female nurses treated as professionals in the armed forces? "We have made partners of the women in this war; shall we admit them only to a partnership of suffering and sacrifice and not to a partnership of privilege and right?" U.S President Wilson, September 1918 My research for this essay showed that although there were similarities between American and Australian attitudes towards female nurses serving in their armed forces, some elements of the American War Department were more reluctant in allowing female nurses to serve as part of the armed forces in World War One. The different types of sources consulted were useful for different purposes. For example, the Australian Defence Department website (See Web Reference 3) although very detailed, suffers the expected bias due to it being written and published by the nursing corps of the current Australian Army. I also discovered that it was essential to distinguish between different parts of the armed forces because in some instances, like the case of the US War Department and the US Army, they had conflicting views on female nurses serving in World War One. This essay shows that there was a temporary marked change in each country towards the attitude of female nurses participating in the armed forces as the war progressed. However, after the conclusion of World War One, whilst they had earned respect for the nursing profession, their contribution was still not enough to admit them into the armed forces on a permanent basis. The establishment of the Australian Army Nursing Service in New South Wales in 1898 (Adam-Smith, 1984, 16), and in America the creation... ...World War One was still not enough in proving that women nurses were capable of serving as a permanent part of the armed forces. (See Web Reference 5) Works Cited: 1. http://www.anzacday.org.au/hidtory/ww1/overview/nurses.html 2. http://www.awm.gov.au/1918/medical/nurses.htm 3. http://www.defence.gov.au/dpe/dhs/main/infocentre/history/army/raanc.htm 4. http://www.skp.com.au/memorials/00010.htm 5. http://bss.sfsu.edu.tygiel/Hist427/paddison.htm 6. Bullough, V.L & Sentz, L. American Nursing, a biographical dictionary. Vol I. 2000, Springer, New York 7. Barker, M. Nightingales in the Mud: The Digger Sisters of The Great War 1914-1918, 1989, Allen and Unwin, Sydney 8. Cohen, I.B. Florence Nightingale, 1997, Springer, New York 9. Cochrane, P "Australians at War" 10. Adam-Smith, P "Australian Women at War" 1984, Thomas Nelson Australia, Hong Kong