The Poetry of Elizabeth Bishop Essay Example for Free

The Poetry of Elizabeth Bishop Essay In my answer I will be talking about my ideas on the themes, styles, and images in the poetry of Elizabeth Bishop. Elizabeth Bishop was born on the 8th of February 1911 in Worcester, Massachusetts. Her father died when she was eight months old and her mother, in shock, was sent to a mental hospital for five years. They were separated in 1916 until her mother finally died in 1934. She was raised by her grandparents in Nova Scotia. There are four main themes in the poetry of Bishop. These include nature, childhood, domesticity/motherhood, and the resilience of the human spirit. The two poems I will be discussing about in my answer related to the following themes are ‘Sestina’ and ‘The Filling Station’. The two themes I will be discussing about are domesticity and childhood. The first poem I will be discussing on is ‘Sestina’. The theme in ‘Sestina’, which I will be discussing, is childhood and domesticity. In ‘Sestina’ Bishop is looking back at her childhood in a child’s perspective. The use of the third person voice in Sestina blends the poets adult perspective with the childs. A sestina is a seven stanza poem with 6 lines in every stanza except for the last one, where there are only three. If we look at the last word in every line of the first stanza we realize that house, almanac, stove, grandmother, child, and almanac are used over and over again as the last word of every line, except the last stanza where there are two words in every line. The reason why Elizabeth Bishop titled her poem after the form it was written in was because she wanted the reader to understand the way a child sees. A child rearranges things until it makes sense, the way the words are rearranged over and over again. In stanza five of the child is drawing a picture. The picture is an outlet of the child’s emotion. I think this is a great way of doing so, after all a picture tells a thousand words. The picture the child draws therefore reflects truly what the child dreams of, †Å"a rigid house† and â€Å"a man with buttons like tears†. Apparently, this is a complete contrast to the current situation. It is a happy past that she’ll never have again. It is the bitter mirror image of the present and the past of dream and reality. Although, in the last two stanzas the mood of the poem takes a turn for a brighter theme because of the child’s picture â€Å"†¦little moons fall down like trees from between the pages of the almanac into the flower bed†¦Ã¢â‚¬  Personally, I take the image of flowers in the rain as a very interesting one. It resembles the silver lining in every cloud and the light at the end of the road. It’s about restoring hope in the face of affliction. This is clearly shown at the beginning of the last stanza. The verse â€Å"time to plant tears, says the almanac† marks the turning point of the poem. It is also at this moment that the child becomes happy, therefore not being completely unhappy. It’s time for the grandmother to bury her tears in the earth and grow hope. The message of the poem is then unveiled: there will be a rainbow after the rain, just as there will always be hope for tomorrow. â€Å"The grandmother sings to the marvellous stove and the child draws another inscrutable house†. The grandmother stops crying and starts to sing, the child stops dwelling on the past and starts to draw the future. The almanac in the poem represents the domestic. Its secular and full of information. We have this domestic scene with a stove a grandmother and a childbut then we have tears. The tears tip the poem towards the absurdity. The child can sense the grandmothers tears even though she is trying to hide it. The child expresses this through the picture she drew if a man with buttons like tears,, and by watching the teakettles small hard tears dance like mad. And in the last stanza where it ends with an inscrutable house, the last thing that should be inscrutable is her house. But in this case there are many symbols and the child is having a difficult time making sense out of things, so even though we have this domestic scene, it isnt really. I think that the tears are from the lack of the grandmothers children, the childs mother. Maybe thats the unspoken reason. The second poem I will be discussing is ‘The Filling Station’. In this poem I will be discussing the theme of domesticity/motherhood. I think it is the domestic details that fascinate the poet in this poem. I think so because the poet seems to write in a lot of detail about the domestic items in the â€Å"little, filling station†. Instead of saying it’s an oily filling station, she describes it further in saying it’s â€Å"oil-soaked, oil-permeated to a disturbing, over-all black translucency†. This is one example of her in-depth detail of the filling station in the poem. The two things in which she goes into extreme detail in are the â€Å"doily† and the â€Å"plant†. She becomes very interested in these two domestic objects because they greatly contrast the atmosphere which the poet saw the filling station to be, â€Å"somebody embroidered the doily. Somebody waters the plant, or oils it maybe.† This shows how interested the poet was in these two objects. I understand the â€Å"somebody† in stanza six to be a caring mother. This may be linked to Bishop’s personal life in that she lost her own mother and is longing for a caring mother figure in her life, or, at least, in her life as a child. The realisation that the mother isn’t to be seen happens gradually as we see that it’s a family filling station and that there is wicker furniture, a woman’s touch surely, but then the sudden realisation floods Bishop in the sixth stanza when she repeats the word â€Å"somebody† again and again. The repetition of â€Å"somebody† appears to be a method of ignoring who this person might be even though the association is obvious. Bishop seems to be hiding from the realisation, reinforcing the thoughts that this is about her own lack of a mother. One of the things I love the most about the poetry of Elizabeth Bishop is the imagery. Elizabeth Bishop is well-known for her ability to take the mundane or most unimportant things in life and use her imagination to change it into something completely out of the ordinary. ‘The Fish’ is a great example of this. Elizabeth Bishop is renowned to write poetry about the beauty of poetry. This poem is not an exception. Bishop merely catches a fish, yet by her imagination and creativity, which is a part of her poetry, she is able to imagine the fish beyond what it is, not only talking about its skin but also talking about its innards and portraying it as a war veteran. In fact, the ending speaks of how Bishop even begins to see the colours of the rainbow. Sad to say, the poem focuses more on poetry itself; it is unlikely the poem is speaking of morality or life and death between herself and the fish. This is what makes it such a great poem. The main thing I like about this poem is the vivid imagery Bishop gives, especially when describing the fish. In this poem, the central image is of the poet holding the fish beside her rented boat. There are three main groups of factual images. The first group contains thirteen physical images of the fish: â⠂¬Ëœtremendous fish†¦ mouth†¦ brown skin †¦ speckled with barnacles†¦ infested with tiny white sea-lice†¦ his gills were breathing in the terrible oxygen†¦ the coarse white flesh the big bones and the little bones†¦ his shiny entrails†¦ the pink swim-bladder†¦ his eyes†¦ mechanism of his jaw†¦ his lower lip’ The second group contains seven factual images of the boat: ‘ beside the boat†¦ the little rented boat†¦ the pool of bilge where oil had spread a rainbow around the rusted engine†¦ to the bailer rusted orange†¦ the sun-cracked thwarts†¦ the oarlocks on their strings†¦ the gunnels†¦Ã¢â‚¬â„¢ The third group contains seven factual images of fishing: ‘ my hook fast in a corner of his mouth†¦ five old pieces of fish-line†¦ or four and a wire leader with the swivel still attached†¦ with all their five big hooks grown firmly in his mouth†¦ A green line, frayed at the end where he broke it†¦ two heavier lines†¦ and a fine black thread still crimped from the strain and snap †¦Ã¢â‚¬â„¢ Overall, there is a great variety in the imagery used in this poem, which is why I like the imagery in this poem. The writing style of Bishop was very different in comparison to her notable contemporaries such as Robert Lowell and John Berryman. In contrast to their confessional style involving large amounts of self-exposure, Bishops style of writing, though it sometimes involved sparse details from her personal life, was known for its highly detailed and objective, distant point of view and for its necessity on the personal subject matter that the work of her contemporaries involved. In contrast, when Bishop wrote about details and people from her own life, as she did in her story about her childhood and her weeping grandmother in Sestina, she always used discretion. Sestina, in other words, is not personal confession, as the lack of personal names indicates, but representative in the way that a tale is. Along with the persona, the point of view, and the poetic form, the language creates a complex experience for the reader. One sympathizes with the grandmother and the child, sensing sorrow, yearning, and the tensing of the childs effort to be an individual within the sheltering, suffocating domestic scene. Yet one also hears wariness in Bishops telling of their story.

Automatic Fire Alarm System (A-FAS) Design

Automatic Fire Alarm System (A-FAS) Design ABSTRACT The safety of the environment and individuals is monitored and maintained by the important role fire alarm systems play. Although, the usability of many of the existing fire alarm systems is known by the users, however, they are produced with high cost thus not reasonable for the low-income users. The main objective of this project is to design a prototype of an automatic fire alarm system (A-FAS) with low cost. The A-FAS designed in this project contains two systems, the detection system and the alarm system. The detection system operates as the fire detector and consists of a smoke detector, heat detector and an emergency switch as a manual call point. This paper discusses the design and implementation of a microcontroller based fire alarm system. The detectors are placed in different zones and any signal from any detector at any zone will activate the alarm system. The alarm system consists of LEDs, LCD notification, buzzer and text message notifications. Furthermore, the system i s fitted with sensors at different zones to identify the presence of individuals, this feature aids the monitoring process of the system. The entire system is controlled by a microcontroller which is programmed using Arduino compiler. Upon completion of the prototype, the A-FAS detects smoke or any rise in temperature sensed by the detectors. Finally, when any of the sensors are triggered, the buzzer operates and the system sends a text message to the saved number. With the development of A-FAS, the safety of individuals and surroundings will be increased as the low cost of the system will promote users of all income levels to have one at their place or home. INTRODUCTION An overheated electrical appliance, a burning splinter or a burning cigarette or just about any of these can trigger a fire. Moreover, the presence of nylon settings and a sofa set which emanate poisonous gases if on fire, will render people helpless in a couple of minutes, before even realizing what is happening. ADT Security Service and the Chubb Alarm are the well-recognized companies that deal with security systems and have been the innovative leaders in security systems. The products offered by these companies vary from intruder alarms to highly sophisticated fire alarm systems. Furthermore, the systems built by these companies are high in cost and require a scheduled maintenance to be carried out by the companys specified authorities. Based upon the current existing high cost fire alarm systems that are available in the market, an automatic fire alarm system with low cost has been developed. The A-FAS consists of two subsystems; detection system and alarm system. The A-FAS detection system has smoke detecting capabilities as it incorporates an optical smoke detector. Moreover, it is interfaced with heat detector and an emergency switch. The system features counting capabilities based on infrared sensors to ease the determination of individuals in case of emergency. The A-FAS alarm system is associated with the detection system to ease the process of alarming individuals in the event of fire. The alarm system consists of LED and LCD notifications displaying the location of the fire. A buzzer is also incorporated in the system. The system sends text message alerts as it incorporates a GSM module. Finally, the main part of the A-FAS that controls the entire operation is the microcontroller. This thesis describes the design and operation of a microcontroller based fire alarm system that could contribute to saving lives and reduce property losses with low cost. Aim The main purpose of this project is to design and prototype an automatic fire alarm system (A-FAS) with effective and competitive usage and can be produced at a low cost. This system is designed to be easy to operate by any user and is user friendly. The A-FAS is also been designed using minimum hardware at the lower level of processing. The system is not restricted to the mentioned inputs and outputs, however, can be altered per customer needs without having to design a new system. Problem Identification The complexity of the existing fire alarm system in the market nowadays is too high in terms of design and structure. Due to the complexity of the system, regular preventive maintenance is required to be carried out to make sure that the system is operating well. Moreover, the scheduled maintenance adds to the cost of the using the system. Therefore, the proposed fire alarm system is designed with a low cost and can be used by any user for safety purposes. Project Objectives There are several objectives that are required to be accomplished in developing the A-FAS to determine the purpose and the direction of this project. This project aims to achieve the following objectives: To design a low-cost microcontroller based fire alarm system. To develop a prototype of the fire alarm system using smoke detector, heat detector, emergency switch and infrared sensors as inputs to the system. Moreover, using LEDs, LCD display, buzzer and text messages as outputs to the system. To develop a prototype with the capability of customizing the system to meet with the customer requirements with regards to the inputs and outputs, without having to redesign a new system. To develop an automatic fire alarm system to safeguard the user and their surroundings, while being user friendly to accommodate the need of the masses. Project Scope To achieve the above objectives, the project needs to be implemented as below: The heart of the fire alarm system is to be a microcontroller to control the entire operations involved. The fire alarm system is to count the number of individuals present in the locations where the infrared modules are installed. Capable of displaying the source of the alarm on the LCD display. Capable of sending SMS notifications via GSM module interfaced in the system. Project limitation Since the project is interfaced with a GSM module that needs a SIM card to send SMS notifications and thus the system is limited to the amount of credit available on the SIM. Moreover, the system includes infrared sensors that are used to count the number of people entering and exiting the zone and thus to make the system more sensitive and receive only the infrared radiation from the correct source, the infrared modules need to be placed with a minimum distance of 2 meters. Furthermore, to receive live data from the sensors to produce visual output to the user in terms of if any sensor is disconnected from the system, the system is required to have personalized sensors. System Overview Figure 1.1 defines the inputs and outputs interfaced to the microcontroller device. The A-FAS has the features of interfacing additional inputs and outputs based on customer needs. Color Type of sensor Infrared sensors Smoke detector Hear detector Emergency switch The A-FAS works in a loop checking all the input sources and acting accordingly. The smoke detector, hear detector and the emergency switch transmit a signal to the microcontroller once triggered, this notifies the microcontroller to hazard the surroundings via the output devices. A keypad is added in the system to allow the user to interface and monitor the system. The Atmega2560 microcontroller acts as the heart of the Fire Alarm System which controls the entire system. The signals being received from the sensors are being compared by the Atmega2560 to either hazard the surroundings for the existence of fire or to hazard the surroundings for the presence of a fault in the system. Moreover, the system can alert the surroundings via a buzzer and LED notifications as well as SMS notifications once the Atmega2560 microcontroller receives signals that there is fire present in one of the zones. Thesis structure This thesis is divided into six chapters. The first chapter explains the problem statement, objectives, scopes and limitations of the project. The second chapter in this thesis is the projects literature review, which is based on the detection components of the A-FAS, the ATmega2560 and a comparison between microcontrollers and microprocessors. Moreover, this chapter contains summary of several available inventories software available in todays market and previous projects developed by engineers. Furthermore, chapter three describes the phases involved in the development of the A-FAS. There are four phases involved in the production of the fire alarm system which include the research phase, the designing phase, development phase and the analysis phase. Chapter four of this thesis discusses the system design process involved and the hardware and software development. Moreover, chapter five explains the results of the system development of the A-FAS and its analysis based on the system operation and functions. Finally, chapter six concludes the project and the recommendation suggestions for the continuity of the project and future work. The sixth chapter aids to the continuity of the project by other individuals interested as they can refer to it to develop the system. CHAPTER II LITERATURE REVIEW As mentioned earlier in the previous chapter, cost factor plays a very important role in this project. Subsequently, to design a system with the objectives mentioned above requires research and studies that are described in this chapter. This chapter will include three subtopics, previous case study on fire alarm systems, hardware and software studies. Fire Alarm System: Related Work According to Bao Minzhong, Jianmei, Niihau Xiao and Wang [1], the function of the fire alarm system is to detect fire at an early stage providing sufficient time to produce high reliable judgment results. If the fire alarm system nosedives to notify the user in the presence of fire for the user to take appropriate measures, the system fails as alarm systems should cause the operator to respond. Moreover, Brown Campbell [2] suggested that for a system not to fail, it must require positive feedback from the operator. Nur Abd Aziz [3] proposed a fire alarm system consisting of three sensors, thermistor hear sensor, infrared sensors and infrared smoke sensors. The thermistor heat sensor was used to detect the rate at which temperature rises and high temperatures. The infrared sensors were used for intruder alarms to detect the presence or any motion, acting as a burglar alarm system. The infrared smoke sensors were used to identify fire in its early stages or smoldering. In the presence of fire, the water sprinklers are automatically switched on and the burglary alarm is activated. The known catalysts for fire is smoke, flame and heat but only smoke and smoke sensors have been applied and emphasized. Furthermore, when a fire occurs, the highly sensitive motion sensors will respond to normal environmental vibration which could be caused by moving cars or planes overhead. Furthermore, Chew and Ing Ming [4] proposed a similar system consisting of smoke detector, heat detector and a burglar alarm. In the event of smoke or a rise in the temperature, the system sends a signal to the microcontroller which in return operates a buzzer. Moreover, the microcontroller operates an auto redialing telephone programmed with specific number. This system. Moreover, the system is implemented with photo-electric sensor and inductive proximity switches. The photo-electric sensor is activated when transmitter cannot send light to the receiver. The inductive proximity switch is normally used for metal detection and activates when a metal is detected in the system. Once any of the sensors is activated, the microcontroller will sound the buzzer and flash LEDs. Chew and Ing Ming categorized the system proposed for industrial purposed. The complexity of this system contributes to the inability of installing such system at homes or offices. Detection components of the Fire alarm system Sensors are types of transducers that responds to a type of energy by producing another type of energy signal, usually electric [5]. Some of the sensors available include acoustic, biological, chemical and electromagnetic. These are used in many applications and are heavily used in the medicine industry and robotics as a source of detection components. The detection components of the A-FAS consist of smoke sensors, heat sensors and infrared sensors. Smoke Sensors Smoke detectors are devices designed to detect a fire while it is in its early stages or smoldering, duplicating the sense of smell. These devices have gained a wide usage in the residential and life safety applications. There is no debate that smoke detectors is the single most effective method of reducing fire damages and death. 90% to 95% of fire deaths occur in residential buildings (NZFS, 1993), targeting this will help accomplish the most cost-effective results. Studies of various types of smoke detectors, in particular photoelectric and ionization smoke detectors, illustrates that, one type of detector will be expected to perform better than the other, depending on the source of the smoke. Natarianni (1993) concludes that in flaming wood crib fires, the ionization smoke detectors activate before the photoelectric detectors. This conclusion is from simulated fires in hospital patient rooms. However, most importantly, both detectors activated before threatening the patients life. Moreover, a series of full-scale tests of smoke detectors installed in corridors and bedrooms of residential areas was conducted by Kennedy et al (1978). They concluded that inadequate warning in smoldering fires were often produced by ionization detectors. Subsequently, reducing the time available for escape once activated and the escape routes may be smoked-logged. Photoelectric smoke detectors contain a light emitting device, most commonly a light-emitting diode(LED), a smoke chamber and a photosensitive device that produced a monitored current from receiving light directly from the light source. The intensity of tech light reaching the photosensitive device is reduced by the smoke that enters the chamber. A drop in the intensity below a certain level causes a drop in the current produced by the photosensitive device, which is detected by the sensor control circuitry. Dropping the current below a preset threshold results in triggering the smoke alarm. Table 2.1 summarizes the advantages and disadvantages of photoelectric smoke detectors. The complete specification of the smoke detector used in the A-FAS can be obtained in Appendix A. Table 2.1: Advantages disadvantages of photoelectric smoke detector [6]. Advantages Disadvantages Sensitive to visual particles of smoke. Provide early warning. Detects smoldering low heat fires. Detects presence of smoke, not toxicity. Can be installed in any of the following typical locations: Office areas Clean rooms Atriums and corridors Sleeping rooms Storage closets Early contamination by dust causing reduced sensitivity. Must be cleaned on a regular basis. Has a potential for high false alarm rate, however, lower than the ionization smoke detectors. Heat Sensors A heat sensor detects abnormal rate of temperature rise or high temperatures. There are numbers of various heat detectors available in the market, which include: Thermistor. Thermocouple. Resistance temperature device. Diode based temperature sensor. There are certain features to consider while choosing the best heat sensor for any use. These features are summarized in table 2.2. Table 2.2 Features of various heat sensors [7]. Thermocouple RTD THERMISTOR SEMICONDUCTOR High accuracy and repeatability. Fair linearity Poor linearity Linearity: 1oC Accuracy: 1oC Needs cold junction compensation Requires excitation Requires excitation Requires excitation Widest Range: -148oC to +2300 oC Widest Range: -200oC to +850 oC Widest Range: 0 oC to +100 oC Widest Range: -55oC to +150 oC Low voltage output Low cost High sensitivity 10mV/K,20mV/K Typical output The LM35 temperature sensor are precision integrated circuit temperature sensors, which will be used to develop the A-FAS. This sensor is fully rated from -55 Â °C to +150 Â °C and with the linear scale factor of 10mV/Â °C. It operates from 4 to 30 V, has less than 60 ÂÂ µA drain current and has low self-heating (0.08 Â °C in still air). The control circuitry or the interfacing of LM35 is easy due to the low output impedance, linear output and precise inherent calibration. The LM35 series is available in hermetic TO transistor packages, while the LM35C, LM35CA and LM35D are available in TO-92 transistor package. The LM35D is also available in an 8-lead surface-mount small outline package and a plastic TO-220 package. [8] (Reprinted from datasheet of LM35 [8].) The LM35 can function as a basic centigrade temperature sensor sense temperature between +2 oC and +150 oC and can function as a full -range centigrade temperature sensor sensing temperature between -55 oC to +150 oC. Figure 2.1 illustrates the circuitry for using the sensor for both functions, where +Vs is the voltage supplied to the sensor. Adjusting the output voltage of the sensor enables the temperature to be obtained in degree centigrade. Infrared Sensors: There are many sensors available for obstacle detection such as infrared sensors, ultrasonic sensors, camera and laser based sensor system (LIDAR). In this thesis, infrared sensors are used to accomplish the task of counting the numbers of individuals in the placed installed. Low cost with accuracy is one of the main objectives of this project, hence infrared sensors were selected for the design. These sensors are widely used for measuring distances and obstacle detection and have faster response time than ultrasonic sensors [10]. Moreover, power consumption of the infrared sensors is lower than that of ultrasonic sensors [11]. Infrared sensors are categorized as diffuse reflection sensors and retro-reflective sensors. The latter is mainly used in harsh environment conditions and has a larger detection range than the diffuse reflective sensors [12]. Infrared sensors utilize a light sensor to detect a selective light wavelength in the spectrum. When an object obstructs the sensor, the light from the LED is broken by the object and the signal is not received by the receiver. ATmega2560 Microcontroller As defined by James L. Atonakos [13], microcontrollers are souped-up microprocessors with built-in features such as RAM, ROM, A/D, Interval timers and parallel input and output ports. Atmega2560 (figure 2.2), is a powerful flash microcontroller that contains many features in a 100-pin package. The datasheet of the ATmega2560 is attached in Appendix B. The definition of a flash microcontroller is that it can be programmed and erased instantly without the usage of ultra-violet light. The Atmega2560 is an 8-bit microcontroller with a powerful execution of instructions in a single clock cycle leading to the achievement of 1 MIPS per MHz, allowing the designer to optimize power consumption vs processing speed [14]. The internal architecture of the microcontroller is shown in figure 2.3. The central processing unit (CPU) is the brain of the microcontroller that controls the execution of the program, therefore able to access memories, handle interrupts and perform calculations. The microcontroller unit (MCU) consists of 256K bytes of in-system flash, 4K bytes EEPROM and 8K bytes of SRAM, which are used for memory. Other features include [14]: 86 programmable input and output ports. Ultra-low power consumption in active and power down mode. flexible timer/counters with compare modes and internal and external interrupts. Code protection facility, which is one of the best in the industry. Comparison between microcontroller and microprocessor The fact that microcontrollers may have one or two operational codes for moving data from external memory to the CPU, whereas, microprocessors have many operational codes, is the best way to exemplify the contrast between microcontrollers and microprocessors. Microcontrollers have many types of bit handling instructions, however, microprocessors have one or two. In conclusion, the microcontroller is concerned with rapid movement of bits within the chip, whereas, microprocessors are concerned with rapid movement of codes and data from external addresses to the chip. Microcontrollers can function as a computer with the addition of no external digital parts, however, microprocessors must have many digital parts to be operational [15]. OrCAD Figure 2.4 shows the OrCAD software used for circuit designing, testing and circuit analyzing. Generally, OrCAD is a software used to produce printed circuit board (PCB) layouts. The circuit was drawn onto the PCB board using OrCAD Capture, where footprints for each component was researched. The design rule check ensures that there are no errors present in the circuit. Arduino IDE The Arduino IDE (Integrated development environment) is a platform application from ATmega microcontrollers. Figure 2.5 shows the Arduino version used to compiling the program. Arduino IDE is used for writing, debugging, and optimizing ATmega microcontroller applications for firmware product design. Arduino programs are written in C or C++ and the software comes with a library called wiring which makes may common outputs and inputs operations much easier. Fire alarm systems available in the market There are several types of fire alarm system available in the market today. The various fire alarm systems from different developers vary in terms of implementation and functionality. Research has been carried out to investigate the technology and features used to develop each of the systems and compared them with the proposed A-FAS system. Table 2.3 concludes the results on the research, [16] [17]. Table 2.3 Manufacturers products Specifications SECURE 6000 INTELLIGUARD 2900 Developer Chubb Alarm ADT Fire and Security Fire monitoring Available Available Security monitoring system Available Available Service and maintenance Provided Provided Main features Sounding the alarm at first sign of smoke Combination of interior motion, door and window. Controlled via a remote control Plugs into telephone line to provide back to back monitoring system. Connected to signal fire condition to ADT customer monitoring center. Computer assisted reporting. Expandable used microprocessor to offer extensive flexibility. Reduce false alarm since the system can locate the origin of the alarm. Cost $2,055 $1,800 CHAPTER III Methodology This methodology chapter describes the planning and research involved in the development of the entire A-FAS system. The progress of this project was due to the division of the work in four phases; research phase, designing phase, development phase and the analysis phase. Introduction The fire alarm system described in this thesis is divided in to two sections, which are the hardware and the software sections. These sections play a vital role in the effectivity and the functionalities of the system. In order to start developing the project, there are few procedures that must be considered. Thus, earlier planning is important in designing and developing the A-FAS. The related phases have been illustrated in figure 3.1. Research phase The first phase of this methodology deals with the systems literature studies, research and analysis. Problem identification is included in the research phase. Moreover, the system objectives are determined by observations and theoretical information obtained from internet sources, journals, books and magazines. During this phase, the system requirements are determined, which include the hardware and software interfacing. Furthermore, the research and analysis conducted on the existing systems available in todays market is included in the research phase, as well as reviews on previous projects developed by organizations or individuals. A few problems have been identified based on the current research that has been done, which include: Burglar alarms are combined with the fire alarms in the same system, leading to confusion and inability to identify the source of the alarm by the user. The systems available are designed for specific purposes, providing the user with no options of customization of the fire alarm inputs and outputs. The cost of the systems is too high for low income individuals to secure their lives and properties by purchasing one. Websites and documentations were the source of reviews on analysis activities conducted in this phase. The system planning and development scheduling were then determined in this phase which suited the chosen development methodology. Upon completion of this phase, the system scopes, specifications and Gantt chart were produced. Designing Phase The second phase of the system development is the designing phase. The main objective of this phase is to translate or transform the requirements and analysis obtained from the research phase into design specifications for system implementation and construction. This phase involves a vital task for the success of the automatic fire alarm system, which is the hardware design of the system. Designing of the A-FAS hardware system The A-FAS hardware design involves detection components and the microcontroller. The detections components which are the smoke detector, heat detector, infrared sensors and an emergency switch are connected to the microcontroller. The latter is the control unit identifying the source and location of the fire if any of the input detection devices is triggered. A text message will be sent and a buzzer will be activated for individuals to evacuate the premises. Smoke sensors The system has been implanted using a Mercure photoelectric smoke detector. The system has the capability of being interfaced with most of the market available smoke detectors. However, to interface the smoke detector to the microcontroller, the smoke detector circuit is required to be altered. The smoke detector then sends a signal to the microcontroller in the event of emergency. The photoelectric smoke detector used in this project is very effective and highly recommended by users, with a low cost. These devices offer high power dissipation capability and are ideally suited for hostile environments. Heat sensors The LM35 temperature sensor has an output voltage which is linearly proportional to temperature in centigrade, thus the sensor is suitable for the project. The sensor draws very small amount of current which makes it very low self-heating. Figure 3.2 describes th

Classical Music Instruments :: essays research papers

Woodwinds: 1.  Ã‚  Ã‚  Ã‚  Ã‚  Flute: The flute is made in the form of an open cylindrical air column about 66 cm long. Its fundamental pitch is middle C (C4) and it has a range of about three octaves to C7. Sound is produced from a flute by blowing onto a sharp edge, causing air enclosed in a tube to vibrate. The modern flute was developed by Theobald Boehm who experimented with it from 1832 to 1847, desiring to give it a bigger tone. He finally produced a parabolic (bowl-shaped) head joint attached to a cylindrical body with open-standing keys and finger pads to cover large finger holes. Since then, other minor improvements have been made. The modern flute usually has a range from middle C (C4) upward for about three octaves. In Europe flutes are often constructed of wood; silver is commonly used in the United States. 2.  Ã‚  Ã‚  Ã‚  Ã‚  Oboe: The oboe is a soprano-range, double-reed woodwind instrument of length 62 cm. Its wooden tube is distinguished by a conical bore expanding at the end into a flaring bell. The modern oboe's range extends from the B-flat below middle C (B3-flat) to the A nearly three octaves higher (A6). Sounding a fifth below the oboe is the English horn and the bass member of this family is the bassoon. A melodic instrument capable of very gentle, expressive passages, the instrument is yet said to take a large amount of air to play. The range of pressure between the softest and loudest sounds is rather small, so careful control of the pressure on the reed is necessary. Traditionally made from African Blackwood, also called grenadille, the instrument is made in three parts. The top joint has 10 holes, three of which are manipulated by the player's left hand. The bottom joint also has 10 holes, three of which the player uses with the right hand. The bell section has two hole s, covered with keys, which are not typically used by the player. Oboes are still hand made by expert craftsmen who are very secretive about the dimensions, size of aperture, etc. used in the construction. The double reed is fashioned from cane which is grown on the east coast of Spain, which is usually dried and aged for several years. The careful fashioning of the double reed is a key part of getting a fine musical sound from the instrument. 3.  Ã‚  Ã‚  Ã‚  Ã‚  Clarinet: The clarinet consists of a closed cylindrical air column with a bell-shaped opening at one end. Classical Music Instruments :: essays research papers Woodwinds: 1.  Ã‚  Ã‚  Ã‚  Ã‚  Flute: The flute is made in the form of an open cylindrical air column about 66 cm long. Its fundamental pitch is middle C (C4) and it has a range of about three octaves to C7. Sound is produced from a flute by blowing onto a sharp edge, causing air enclosed in a tube to vibrate. The modern flute was developed by Theobald Boehm who experimented with it from 1832 to 1847, desiring to give it a bigger tone. He finally produced a parabolic (bowl-shaped) head joint attached to a cylindrical body with open-standing keys and finger pads to cover large finger holes. Since then, other minor improvements have been made. The modern flute usually has a range from middle C (C4) upward for about three octaves. In Europe flutes are often constructed of wood; silver is commonly used in the United States. 2.  Ã‚  Ã‚  Ã‚  Ã‚  Oboe: The oboe is a soprano-range, double-reed woodwind instrument of length 62 cm. Its wooden tube is distinguished by a conical bore expanding at the end into a flaring bell. The modern oboe's range extends from the B-flat below middle C (B3-flat) to the A nearly three octaves higher (A6). Sounding a fifth below the oboe is the English horn and the bass member of this family is the bassoon. A melodic instrument capable of very gentle, expressive passages, the instrument is yet said to take a large amount of air to play. The range of pressure between the softest and loudest sounds is rather small, so careful control of the pressure on the reed is necessary. Traditionally made from African Blackwood, also called grenadille, the instrument is made in three parts. The top joint has 10 holes, three of which are manipulated by the player's left hand. The bottom joint also has 10 holes, three of which the player uses with the right hand. The bell section has two hole s, covered with keys, which are not typically used by the player. Oboes are still hand made by expert craftsmen who are very secretive about the dimensions, size of aperture, etc. used in the construction. The double reed is fashioned from cane which is grown on the east coast of Spain, which is usually dried and aged for several years. The careful fashioning of the double reed is a key part of getting a fine musical sound from the instrument. 3.  Ã‚  Ã‚  Ã‚  Ã‚  Clarinet: The clarinet consists of a closed cylindrical air column with a bell-shaped opening at one end.

Kitzmiller v. Dover Area School District Essay -- Church State Argumen

In cases having to do with constitutionality, the issue of the separation of church and state arises with marked frequency. This battle, which has raged since the nation?s founding, touches the very heart of the United States public, and pits two of the country's most important influences of public opinion against one another. Although some material containing religious content has found its way into many of the nation's public schools, its inclusion stems from its contextual and historical importance, which is heavily supported by material evidence and documentation. It often results from a teacher?s own decision, rather than from a decision handed down from above by a higher power. The proposal of the Dover Area School District to include instruction of intelligent design in biology classes violates the United States Constitution by promoting an excessive religious presence in public schools. The Dover Area School District of Dover, Pennsylvania is seeking approval from the General Assembly of Pennsylvania House to include the theory of intelligent design in the instruction of biology. Intelligent design, also known as I.D., is a theory that seeks to refute the widely-accepted and scientifically-supported evolution theory. It proposes that the complexity of living things and all of their functioning parts hints at the role of an unspecified source of intelligence in their creation (Orr). For all intents and purposes, the evidence cited by I.D. supporters consists only of the holes or missing links in evolutionary theory; it is a widely-debate proposal, not because ?of the significant weight of its evidence,? but because ?of the implications of its evidence? (IDnet). House Bill No. 1007?the bill in question?propos... ...20Biology%20Curriculum--011005.pdf ?Dover Area School District Biology I Planned Instruction/ Curriculum Guide.? Dover Area School District. http://www.dover.k12.pa.us/3598_7352811954/lib/3598_7352811954/Biology%20Curriculum.pdf ?Edwards v. Aguillard, 482 U.S. 578.? Pepperdine University School of Public Policy. 1987. http://publicpolicy.pepperdine.edu/academics/faculty/lloyd/projects/conlaw/ed_v_ag.htm ?House Bill No.1007.? The General Assembly of Pennsylvania. 2005. http://www2.legis.state.pa.us/WU01/LI/BI/BT/2005/0/HB1007P1153.pdf ?Lemon v. Kurtzmann 403 U.S. 602.? FindLaw for Legal Professionals. 1971. http://caselaw.lp.findlaw.com/scripts/getcase.pl?court=us&vol=403&invol=602 ?Walz v. Tax Commission of City of New York, 397 U.S. 664.? FindLaw for Legal Professionals. 1970. http://caselaw.lp.findlaw.com/scripts/getcase.pl?court=us&vol=397&invol=664

Essay on the Language of A Clockwork Orange -- Clockwork Orange Essays

The Language of A Clockwork Orange  Ã‚      â€Å"Gooly into a world where by nochy prestoopniks rule and oobivat and by day all is well.† This is the nature of A Clockwork Orange, a novel by Anthony Burgess, where one enters the world of a fifteen-year-old named Alex who speaks a vernacular language and does what he likes. This molody nadsat, or young teen, leads a life where crime is real horrorshow as he dodges millicents, or policemen, in order to live a life he wants in the merzky, grazzy city where he resides. Alex and his shaika oobivat too many lewdies, though, and the millicents loveted him. He then becomes a plenny in the StaJa, away from his moloko, snoutie or beloved classical music. As a plenny, he undergoes tests by viddying sinnies, making him horn in pain at the messel of krovvy or guttiwuts. After the tests, Alex returns to the streets as a real horrorshow new malchick, unable to pony or prod crime. Eventually, he meets a ded whose zheena he oobivated before, and is tricked into almost ending his jeezny by thinking of the sinnies and being forced to gooly out of an okno and falling many raskazzes. Alex lives, though, and returns to a jeezny of crime and keeps the city spoogy of him. The previous paragraph gives an example what much of A Clockwork Orange’s language is like throughout the progression of the novel and is partially the reason why it has developed such a cult following since its release in 1963. What Burgess has done is taken English as a base language, and through the use of slang from English, Russian, Arabic and Gypsy, formed a language all its own which actually manages to accurately depict both the mindset of Alex but also the brutality of the world in which he lives. Some of his wo... ...restrictions in the forms of laws or minor regulations. So too does Alex express this interest. Although among today’s youth it is not common to be rioting or embarking on a homicide spree, Alex feels this is his way of living a carefree life. However, as a result of his liberty being â€Å"denied,† he attempts to vent his anger by committing suicide. Again, today’s teens do not generally veer towards those extremes. The parallel reaction in today’s youth to Alex’s reaction would be the excessive usage of innuendo, free use of the vernacular, indulgence in pleasure of any and all kinds, and the exhibition of mock violence to alleviate angst. It is interesting that there is such a shocking similarity between our world and that of the novel because the novel was written in 1963, at which time there were certainly many differences between teens’ views then and those of today.

Cpu Research Paper

CPU: Past, Present,   â€Å"A CPU (central processing unit) is the â€Å"brain† of the computer; it follows the instructions of the software to manipulate data into information. † (Sawyer, 2010, p. 208) The CPU performs logic and arithmetic operations, controls instruction processing, and supervises the overall operation of the computer. The main components of the CPU are the CU (control unit) and the ALU (arithmetic/logic unit). (Dugger & Gerrish, 1994, p. 78) The CPU also has registers which temporary store data during processing, and buses that act as roadways which transmit bits of data within the CPU and to other components on the motherboard. CPU: The control unit deciphers the instructions from the input and moves them into memory. For each instruction the CPU will fetch the instruction, decode the instruction, execute the instruction, and store the result. These four basic operations are known as a machine cycle. The control unit is therefore responsible in th e CPU to instruct and control where the data goes to and what will happen to it. (Sawyer, 2010, p. 208)ALU: The arithmetic/logic unit executes data that the control unit has sent to it. It performs basic arithmetic operations such as addition, subtraction, multiplication, and division. The ALU also performs basic logic operations such as comparing two numbers to see if they are equal, less than, greater than, or not equal. (Dugger & Gerrish, 1994, p. 581) Registers: â€Å"Registers are high-speed storage areas that temporarily store data during processing. † (Sawyer, 2010, p. 209) The CPU contains several types of registers such as an instruction register, address register, storage register, and an accumulator register.These registers may store a program instruction, store data while being processed, or store the results of a calculation. Without the registers the control unit or arithmetic/logic unit could not complete their work. Buses: â€Å"A bus is a group of parallel c onductors which carry information. † (â€Å"Microprocessors,† 1983, pp. 2-2) The conductors may be wires in a cable, foil patterns on a printed circuit board, or microscopic metal deposits in a silicon chip. Buses act as data roadways to get data from one place to another as needed. The term CPU/central processing unit has been in use since the 1960s.Nowadays, we are more familiar with the term microprocessors which are CPUs that are manufactured on integrated circuits in a single-chip package. However, before getting into today’s technology I will take a look at the past CPU technology. Past Exactly which computer was the first electronic computer completed in the United States is a controversial subject. Iowa State University claims that the Atanasoff-Berry Computer at ISU was completed in 1942 just before its creator was called up for duty in the war effort. (Munns) Another computer at the University of Pennsylvania which was funded by the military was complet ed in 1946 by J.Presper Eckert and John Mauchly. First Generation: Eckert and Mauchly’s invention was called the Electronic Numerical Integrator and Calculator, or as many now know it, as ENIAC. This first generation computer weighed 30 tons and contained 18,000 vacuum tubes. ENIAC could do 5000 additions per second. Each specific sequence of calculations had to be hard-wired into the machine. To change programs, ENIAC had to be completely rewired. ENIAC is generally known as the first electronic computer in the United States. However, since ENIAC could not store a program it did not have, what we would call, a CPU. Dugger & Gerrish, 1994, p. 571) In 1945 John von Neumann created a design for a computer system. His design included four basic units for a computer: a CPU, an input device, an output device, and storage. (Dugger & Gerrish, 1994, p. 571) In 1946 John von Neumann joined with Eckert and Mauchly at the University of Pennsylvania to create the Electronic Discrete Vari able Automatic Computer (EDVAC). EDVAC was completed in 1949. It contained almost 6000 vacuum tubes and had 12,000 diodes. EDVAC covered 490 square feet of flooring and weighed almost 9 tons. It required thirty people to operate it.EDVAC is considered the first truly programmable electronic computer that included a central processing unit. No doubt the CPU was enormous, but still a recognizable CPU. (â€Å"EDVAC†) Second Generation: In 1954 Texas Instruments introduced the silicon transistor. This revolutionized computer technology and created the Second Generation of computers. Transistorized CPUs of the 1950’s and 60’s were no longer hampered by vacuum tubes and electrical relay. Second Generation computers were smaller, faster, more rugged, and more reliable. â€Å"With this improvement, more complex and reliable CPUs were built onto one or several rinted circuit boards containing discrete transistor components. † (â€Å"Central Processing Unit† ) Third Generation: The development of integrated circuits and their use in computers began in the mid 1960’s. This shift in technology brought about the Third Generation of computers which were faster, more reliable, cheaper to operate and much smaller. Throughout the advances in computer technology and electronics the CPU continued to become faster and smaller. Fourth Generation: In the early 1970’s, Ted Hoff at Intel invented the first microprocessor.Essentially, this was the first time that a complete processing unit was contained within a single chip and it revolutionized the way computers were applied and designed forever. This is where the Fourth Generation of computers was born. The Intel 4004 was a four bit device, measured 1/8 inch by 1/6 inch, and could execute 60,000 operations per second. (Dugger & Gerrish, 1994, p. 574) By 1972 Intel had come out with an 8-bit microprocessor, the Intel 8008, and within a year had bettered it with the Intel 8080 which coul d execute about 290,000 operations per second.In 1979, Motorola developed a 16-bit microprocessor. The Motorola 68000 was very popular in the blossoming personal computer market. Around the same time Intel rolled out their 16-bit microprocessor; the Intel 8086. While other companies tried to compete in the microprocessor market, it was generally Intel and Motorola who were in the race to built smaller and better processors with each other. By the mid 80’s each had produced 32-bit microprocessors. Beyond: According to Moore’s Law, at our rate of technological development, the complexity of an integrated circuit will double in about 24 months.By the early 90’s, 64-bit microprocessors entered the market. Each succeeding processor is smaller and can produce data much faster. The 90’ saw Intel introduce its first Pentium chip and Motorola introduced their Power PC CPU. Throughout the 90’s Intel improved on its Pentium technology releashing the Pentium P ro, Pentium II, Pentium MMX, and Pentium III. In the late 90’s AMD introduced their Athlon CPU. The Athlon worked at 800 MHz. In 2000, both Intel and AMD released 1 GHz microprocessors in the Pentium 4 and Athlon CPU. By 2002, Intel’s Pentium 4 reaches 3. 06 GHz.By 2006, both Intel and AMD introduce dual-core processors. 64-bit processors have been around for use in mainframes and supercomputers, but now 64-bit processors are being made for personal computers. Present Today’s main competitors for CPU’s in microprocessors are Intel and AMD. Motorola sold off their semiconductor manufacturing section to become Freescale, and has basically bowed out of the CPU race. CPU’s of today are extremely fast. The new Intel Core i7-980X Processor Extreme Edition released the beginning of 2010 has six cores, 12 threads, a max turbo speed of 3. GHz , a 12 MB Smart Cache, and a clock speed of 3. 33 GHz. (â€Å"Intel Processors,†) â€Å"The faster a CPU run s the more power it consumes and the more waste heat it produces. † (Sawyer, 2010, p. 206) For that reason, rather than increasing clock speed, Intel and AMD have pursued using multi-core technology, which employs additional CPU cores and runs them in parallel. Dual, Quad, and multi-core processors are very popular today in CPUs for computers, games and other technology that needs a CPU. Future 128-bit microprocessors are still being developed. Some experts predict that advances in microprocessor technology will produce a 50 GHz processor by 2010, the kind of power that will be required to support such function as true speech interfaces and real-time speech translation† (Sawyer, p. 206) ClusterOnaChip (CoC) is a popular example of the future in CPU technology. Engineers are working on how to place thousands of more processors in a â€Å"cluster† on a single chip. IBM in collaboration with the Georgia Institute of Technology has created a prototype silicon-germaniu m hetero-junction bipolar transistor able to operate at a speed of 500 GHz at 4. degrees Kelvin. At room temperature, the transistor achieves a speed of 350 GHz. â€Å"This demonstrates that speeds of half a trillion cycles per second can be achieved in a commercial, silicon-based technology, using large wafers and low-cost, silicon-compatible manufacturing techniques,† says John D. Cressler, Byers Professor at Georgia Tech’s School of Electrical and Computer Engineering and a researcher at the Georgia Electronic Design Center at Georgia Tech. Our current technological knowledge is not good enough to produce the microprocessors and CPU’s of the future.We are limited by our current materials and in need of innovation to jump start us towards even smaller and faster CPU’s. One can only dream of the day when rather than having a bulky transistor made of silicon, we have processors that are scaled down to the size of an electron itself. Conclusion With Mooreà ¢â‚¬â„¢s Law in mind, we can see that over the past decades we have certainly obeyed his law. From ENIAC to EDVAC, to transistors, to integrated circuits and single chip microprocessors, CPU technology has evolved and is still evolving to bring us the computers that e want and need. Further advances into CPU technology will allow us to compute faster and realize scientific discoveries that can change our world for the better. Our thirst for deep space exploration could become a reality. Medical research will be simplified. The possibilities are endless. References (1983). Microcomputer Basics. In Microprocessors (pp. 2-2). Benton Harbor, MI: Heath Company. Central Processing Unit. (n. d. ). Retrieved from http://www. spiritus-temporis. com/central-processing-unit/history. html Dugger, W. E. , & Gerrish, H.H. (1994). Electronics Technology: Devices and Circuits. South Holland, IL: Goodheart-Wilcox Company, Inc. EDVAC. (n. d. ). Retrieved from http://www. spiritus-temporis. com/edvac/ Intel Processors. (n. d. ). Retrieved from http://www. intel. com/products/processor_number/about. htm Munns, R. (n. d. ). First-Computer controversy finally nearing a conclusion. Retrieved from http://www. scl. ameslab. gov/abc/articles/first-computer. html Sawyer, W. (2010). Hardware: The CPU & Storage. In Using Information Technology. New York, NY: McGraw-Hill.

Robotization of Human Workforce

The Robotization of a Human Workforce Job satisfaction has been defined as â€Å"a pleasurable emotional state resulting from the appraisal of one’s job or job experiences. † It lists two different formulas for calculating job satisfaction: the Value Percept Theory, and the Job Characteristics Theory. This paper discusses the former and how it relates to Foxconn and its CEO, Terry Guo, whom writers Balfour and Culpan describe as a â€Å"ruthless taskmaster. † The Value Percept Theory is essentially the workers’ WIIFM (What’s In It For Me) paradigm, describing how certain job elements affect employee satisfaction, and the ramifications of that satisfaction. It focuses on eight specific categories of employee values: how the salary compares to other employees in the same line of work; the frequency with which qualified people are promoted; supervisors’ conduct and recognition of employee efforts; the enjoyability and qualifications of co-workers; The â€Å"psychological pay† derived from the work itself, described by the text on page 106 as including â€Å"utilization of ability, freedom and independence, intellectual stimulation, creative expression, (and) sense of achievement†; to what extent the work has a positive impact on society; the level of prestige associated with the job; and the safety and comfort afforded on the job. Most people base their job satisfaction on five of those eight criteria. The magazine article discusses Chairman Gou’s business philosophy and response to twelve employee suicides during the first few months of last year. According to the authors, Gou realized there was a problem after the ninth employee jumped to his death from one of the company’s ubiquitous, crowded dormitories. Gou responded by stringing netting around the exterior of the dormitories at second-floor level and set up a 24-hour employee hotline. He also gave employees a 30% pay raise and promised another salary bump during 2011 – principally due to pressure by one of his biggest customers, Apple. These measures were almost certain to reduce the number of employees who sought their own demise by jumping from their dormitory windows – provided they did not land on one of the steel support braces – but it failed to address the real problem of why so many people became despondent enough to end their own lives. The reasons seem clear, using the Value Percept Theory. Among the top five job â€Å"satisfaction facets,† the rate of pay is lowest on the list. Far more important to most workers, according to figure 4-2 in the text, are the work itself and the conduct of supervisors. With respect to those two facets, interviews with employees were telling. One employee stated that supervisors and managers â€Å"aren’t nice to people,† and a spokesman for China Labour Bulletin, which seeks to uphold the rights of Chinese workers (clb. org), characterizes Foxconn as â€Å"repressive. † Another employee explained the high levels of stress she suffers while performing repetitive tasks that require intense concentration. Though Gou places little value on a college education, he would do well to read our textbook.