Comparing Literary Works Themes' Research Paper

Comparing Literary Works Themes' - Research Paper Example These articles are How I Met My Husband and The Gift of the Magi by Alice Munro and Henry O respectively. How I Met My Husband is a short story that was written by Alice Munro. Having being published in, the story covers the theme of marriage. As one of the most valued aspects of life, marriage has been extensively covered by many authors who are focused at providing the manner in which a strong family is formed based on the right choice during marriage. How I Met My Husband is a story that involves Edie, a young girl who was employed as a house help for Dr Peebles and his family. The story indicates how Edie meets a pilot known as Chris Watters. Immediately, the two falls in love. As a young girl who is looking for love, Edie first encounter with romance is when she comes close to an airplane view. One of the key aspects that the story is based on is the innocent nature about romance that Edie exhibits. Additionally, the story indicate how despite her younger age, she is significantly proud and is aware of her blossoming womanhood that she aim to use together with Mrs. Peebles’s make ups to attract the attention of Chris Watters. One of the afternoons while Mrs. Peebles is away, Edie plans on how to dress herself and become a sophisticated beauty that Chris could not avoid. Chris on his part notices the beautiful Edie while he was looking for cool water to drink. On the other hand The Gift of the Magi is a romance story which is written by O. Henry. The story is concerned about marriage between Mr. James Dillingham (Jim) and Della who is Jim’s wife. Marriage needs commitments and love and thus it is termed as tricky. Love is tricky and thus the young couples want to buy each other gifts but have little money since it is on Christmas Eve. Gift to make each other happy and strengthen their love and thus each and every individual has to play his or her role to make sure that the lover will appreciate the gift. One

Newspaper should not be produced in U.S Research Paper

Newspaper should not be produced in U.S - Research Paper Example introduction of internet and television have greatly affected business of newspaper. People can easily find information in relation to a business proposal or advertising by browsing through internet. In this situation why one will prefer to buy newspaper. Therefore, newspaper profits are declining very rapidly. Present condition of economy proposes that newspaper should not be produced mainly in US because many audit reports have shown negative financial condition of the industry and its popularity is fading day by day. Therefore, it will be suitable to stop producing newspaper and promoting this phenomena more on the basis of internet or other electronic devices (Abbott Jez, 2010). 1.2 Reasons There are many reasons which support this idea that newspaper should not be produced in US. Some of which are described below: Affect of internet and television By 1990s till present news are made available 24 hours on television channels. Introduction of internet have opened new challenges fo r the business world. News is updated on daily basis through internet. These two mediums have reduced the usage of newspaper in many parts of the world including US. Payment circulation of newspaper has been declined as compared to the revenue collected through advertisement on internet. There has been a major shift from print media to new media. This has lead to decline in the profits of newspaper. Most of its revenue goes to electronic media (Plambeck Joseph, 2010). Global warming Reading newspaper has less affect on global warming as compared to reading news online. Creating newspaper is more overweight as compared to powering computers. If one is reading newspaper for 30 minutes, it will have less impact on global warming as compared to reading news online. Newspaper circulation falls Newspapers in US are continuously at stark, its circulation is declining very rapidly, and as compared to last year, circulation of newspaper has reduced more by 9%. In accordance to Audit Bureau o f Circulation sales of newspaper in US have dropped by 6.5% in the last six months in 2010 and weekly sales have been reduced by 8.7%. These results were generated by combining all the individual newspapers in US. Newspaper circulation was in decline since many years, but majorly it was affected by recession after 2008. The main reason for this decline is internet. Many publishers have also limited their services in relation to the delivery. In past, publishers only had to cope up with cost incurred in printing, but considering the present scenario they have to manage losses related to circulation (Liedtke Michael, 2009). Some of the details in relation to the fall of circulation are: New York Times circulation dropped to 5.2% in last year and 8.2% on weekday basis. While Los Angeles Times declined by 7.6% and 9% on weekly basis. Changes in individuals behavior People taste and preferences keeps on changing. Presently, individuals are adopting technological innovations very rapidly. Even businesses are operating through electronic media rather than considering the traditional ways. In all developed countries mainly in US people are getting addicted to internet and mobile phones. They prefer to buy online rather than visiting shopping malls. Similar to that, news on daily basis is generated either through cell phone or computer devices. In this modern world every house have internet facility, if one have facility to see the news at home, why will they prefer to

The Country Briefings Research Paper Example | Topics and Well Written Essays - 500 words

The Country Briefings - Research Paper Example However the country in the recent years has become less competitive in the global market. One of the major disadvantages of investing in Italy is the highly rigid labor market which has also resulted in a slow growth of the GDP in the last few years. The industries of the country require extensive restructuring to have a high growth rate. Overall the economic risk of the country has been categorized as low by the AMB Country Report. China on the other hand has exhibited a fast growth rate in the recent years. It has become third biggest economy in the world. The export sector of the country has experienced a fast growth rate in the last decade, thus making it a lucrative destination for foreign investment. The government has also spent substantially on the improvement of the infrastructure. The monetary regulations of the country had followed an expansionary policy. As a result the economy has growth steadily; however there is a chance of increase in the number of non-performing asse ts. The country which is extremely dependant on the export sector was affected by the recession of 2008 to 2010. But stimulus programs by the government had a good impact and the country has shown a very good recovery after the economic crisis of the world in 2010 (China, 2010; Italy, 2010) Italy offers a stable political environment.

Discuss Research Into the Nature of Relationships in Different Cultures Essay Example for Free

Discuss Research Into the Nature of Relationships in Different Cultures Essay Relationships Discuss research into the nature of relationships in different cultures. (9 marks + 16 marks) In Western Cultures, it has been found that relationships are voluntary, temporary and focus on the needs of the individual as due to the predominantly urban settings in which we live in, we are able to (on a daily basis) interact with a large number of people. Western cultures therefore appear to be characterised by a high degree of choice in personal relationships and a greater ‘pool’ of potential relationships. Non-western cultures however, have less choice about whom they interact with on a daily basis, meaning that interaction with strangers are rare and relationships are frequently tied to other factors, such as family or economic resources. In societies with reduced mobility, (predominantly non-western cultures) arranged marriages are common as love is expected to grow due to the fact that it is not seen as necessary for marriage. Arranged marriages seem to work well and make good sense as divorce rates are low and Epstein (2002) found that perhaps about half of them report that they have fallen in love with each other. Myers et al. , (2005) studied individuals in India living in arranged marriages and found no differences in marital satisfaction in comparison to individuals in non-arranged marriages in the US. This is also supported by Gupta and Singh (1982) who studied 100 degree-educated couples living in India, 50 of who had chosen their partners and 50 of who had their marriages arranged for them. The couples were asked to indicate how much they liked/loved their partners and it was found that love and liking was high in love marriages but decreased whereas love increased in arranged marriages and after 10 years exceeded love marriages. However, this study is difficult to generalise as it studies only a small sample and so cannot be generalised to the wider population. It therefore lacks validity. However, in some adapting cultures such as China, there has been a noticeable increase in ‘love matches’ as the Chinese are currently attempting to move away from traditional ‘arranged’ marriages. Instances in which parents dominate the process of partner choice in china have declined from 70% prior to 1949, to less than 10% in the 1990s. Xioahe and Whyte (1990) studied women in love marriages and found that they were more satisfied than those in arranged marriages. Western cultures are also seen as individualistic due to their focuses on individuals rather than groups, with individual happiness and pleasure seen as fundamentally important. On the other hand, non-western cultures are seen as collectivist cultures as people are encouraged to be interdependent rather than independent. Moghaddam et al. (1993) claim that the cultural attitudes of individualist cultures, are consistent with the formation of relationships that are based on freedom of choice, whereas collectivism leads to relationships that may have more to do with the concerns of family or group. Norms and rules act as guidelines for behaviour and influence how we act out any given relationship. One such norm that plays a key part in personal relationships is the norm of reciprocity. Ting-Toomey (1986) found that in individualist cultures, reciprocity in personal relationships tend to be voluntary. In collectivist cultures however, it is more obligatory. In such cultures, failure to return a favour is seen as a failure of one’s moral duty. In Japanese culture, for example, there are specific rules about gift-giving and reciprocating, whereas n such formal norms exist in Western cultures. Argyle et al. ’s cross-cultural comparison of relationship rules in different cultures did find support for some predictions but failed to support others. However, a problem with this research is that the list of rules was formulated in the UK and may have failed to include rules that are specific to a particular culture such as Japan. Research on cross-cultural differences in norms and rules is important to be able to conduct cross-cultural relationships successfully. Knowledge of the norms and rules underlying cross-cultural relationships is an important aspect of any attempt to understand and improve relations between different cultural groups within a host country. Finally, relationships are difficult to study scientifically. Laboratory experiments, through the manipulation of isolated variables, are seen as the most rigorous way of establishing cause and effect, and he best way of furthering our understanding of the processes involved in human relationships. However, as Hogg and Vaughan (2008) point out, people do bring their cultural ‘baggage’ into the laboratory. Although cultural background may be seen as a problematic extraneous variable to some researchers, it is clear that culture itself is an important variable that influences the relationship processes being studied.

Development of Parallel Parking System

Development of Parallel Parking System Executive Summary Introduction/Background Traditionally development of microprocessor based control systems involved the following steps. The control algorithm was designed by a systems or a control engineer. The algorithm would then be coded in programming languages like assembly, C or C++ which would be implemented on a microprocessor based hardware the controller. The problem with this method was the verification of the algorithm would be possible only once the whole system was developed. Any errors in design would prove extremely costly. Also in converting control logic specification into software there is a high probability of translation errors that would lead to erroneous results. mModel Based Design is a software methodology which addresses these issues and is gaining a lot of popularity currently in the industry. The scope of this project is to apply the Model Based Design methodology to develop a control algorithm that eases the parallel parking of a car problem for a novice driver. Aims and Objectives The aim of this project is to develop a parallel parking system using Model Based Design. The objectives are to understand the parallel parking problem and methods to solve it, steps involved in Model Based Design and explore the possibility of implementation of a parallel parking algorithm on a Lego Mindstorms Robotics Kit. Acheivements A fuzzy logic based parallel parking algorithm was successfully simulated. Model Based Design concepts were explored and implemented in the design. Programs developed in Simulink were successfully tested on the Lego Mindstorms KIT using Real Time Workshop Embedded Coder, EC Robot Toolbox, nxtOSEK and other associated tools. Conclusions/Recommendations The parallel parking strategy implemented did show good results. However, real life scenarios may be different than the one discussed. For example, the controller depends on wall following. This implies there has to be 3 sides closed in a gap for the parking controller to work. The development of the algorithm was with the intent of being able to execute it on a Lego Mindstorms Kit. However, there were some issues regarding this. The main being lack of a floating point unit on the NXT Brick. Though it is possible to execute floating point programs on the NXT, it causes severe performance issues. The controller developed used the fuzzy logic blockset which inherently uses a lot of floating point variables. One method to overcome this draw back could be developing a fixed point version of the fuzzy logic blockset. Other parking strategies involving classical control could be experimented with Lego Mindstorms. Complex tasks like path planning could be executed on a computer communicating with the NXT via Bluetooth and the control tasks could be implemented on the NXT using fixed point math. Introduction Problem Description The parallel parking manoeuvre of a car has been a topic of academic and industry interest. The car or a car-like mobile robot hence referred to as CLMR has inherently a constraint known as a nonholonomic constraint. This is problem can be summarised as follows (Pushkin Kachroo and Patricia Mellodge, 2004.). If a system has restrictions on its velocity, but those restrictions does not cause restrictions in its positioning the systems is said to be nonholonomically constrained. Viewed in another way, the systems local movement is restricted, but its global movement is not. Mathematically, this means that the velocity constraints cannot be integrated. For e.g. during a parallel parking manoeuvre, when a driver arrives next to a parking space, he cannot simply slide his car sideways into the spot. The car is not capable of sliding sideways and this is the velocity restriction. However by moving the car backward and forward and turning the wheels the car can be moved into the parking space. Ignoring the restrictions caused by the external objects the car can be located at any position with any orientation, despite the lack of sideways movement (Pushkin Kachroo and Patricia Mellodge, 2004.). The challenge in this project is to not only address the parallel parking problem but also to develop it using advanced software design techniques involving Model Based Design Literature Survey The parallel parking problem can be viewed as a subtask of robot motion planning and control. There is has been considerable research in this area. De Luca et al (1998) classifies all robot motion tasks into 3 subtasks as follows. Point-to-point motion: The robot must reach a desired goal configuration starting from a given initial configuration. Path following: The robot must reach and follow a geometric path in the Cartesian space starting from a given initial configuration (on or off the path). Trajectory tracking: The robot must reach and follow a trajectory in the Cartesian space (i.e., a geometric path with an associated timing law) starting from a given initial configuration (on or off the trajectory) A parallel parking problem can then considered as a point to point motion task or a path following task and a feedback control law if proposed for the same. (Dongbing and Huosheng 2000) have developed more advanced control strategies involving Generalized Predictive Control and Neural Networks based predictive control. Fuzzy Logic based controllers have also been used to solve the parallel parking problem. Shih-Jie and Tzuu-Hseng (2002) proposes a rule base based on the distance of the CLMR edges to the parking spot. Kuang-Yow et al (1999) proposes a fuzzy sliding mode controller to solve the parallel parking problem. Holve and Protzel (1996) suggest another fuzzy logic based controller and a parking algorithm based on human experience. It involves finding an appropriate space for parking, stopping at the right place, executing the parking procedure and to do so without colliding with any obstacles. Summary The classical control methods discussed above are generally more complex compared to other ones. Most of them rely on trajectory generation and then a control algorithm for trajectory tracking or path following. The success of the algorithm in a real time implementation also depends upon the accuracy of the positioning systems which increases the complexity and the hardware cost of this method. While the fuzzy logic based controllers are more intuitive and easier to design the performance is suboptimal compared to the classical controllers. But they are more robust to sensor uncertainties (Holve, R. Protzel, P. 1996). The goal of this project is to develop a parallel parking algorithm suitable for implementation on a Lego Mindstorms robotics kit. Being able to solve the parallel parking problem and take this design rapidly from concept to implementation is the motivation behind this project. Parallel Parking of a Car like Mobile Robot (CLMR) Introduction The following chapter discusses the kinematics model of a CLMR and investigates a feasible parking strategy using a fuzzy logic based controller. Kinematic Model of a CLMR The kinematic model of a CLMR is as shown (Shih-Jie and Tzuu-Hseng 2002).The model assumes that the car wheels are in contact with the ground at all time i.e. no slip exists. : is a mid point on the rear axle of the car : is mid point on the line joining the front wheels : is the angle between the X axis with respect to the vehicle frame : is the steering angle with respect to the vehicle frame : is the distance between the front and rear axle The non-holonomic constraint equation is given by (2.1) The equation of the rear wheel is given by (2.2) (2.3) (2.4) The relationship between the rear and the front wheels are given by And (2.5) (2.6) The above equations are useful while finding the future positions of the CLMR. The physical layout of the CLMR is a three wheeled one. A three wheel robot and a four wheeled one have the same non- holonomic constraint. A three wheeled robot is chosen here for simplicity. The sensor positions are chosen with the assumption that the parking position is always going to be to the right of the vehicle. 4 ultrasonic sensors are used. 2 sensors (s2 and s1) are placed on the right front and rear edge and the other 2 (s3 and s0) are placed at the front and rear sides of the car as shown in the Fig 2.2. The position of sensors s1 and s2 with respect toand described by the following equations. S1 (2.7) S2 (2.8) The position of the sensors is used to determine the distance of the CLMR from an obstacle during simulation. Parking Strategy The parking strategy is developed intuitively as a human driver would do. The assumption is that a parking spot is somewhere to the right side of the vehicle to be parked (Holve and Protzel,1996). The vehicle would be moving parallel to the line of cars. The algorithm is as follows. Search for an obstacle free area on the right side of the car. The distance should be greater than the minimum distance required to park the car. This could be set at twice the length of the car. Once a sufficiently large parking spot is found, the car is reversed into the gap using a wall following algorithm. This algorithm aligns the car as parallel as possible in the gap without colliding with the rear wall. The car is then driven forward to align itself in the centre of the gap. Steps 2 and 3 can be repeated until the desired position is reached Wall Following Controller (Shih-Jie and Tzuu-Hseng , 2002) The heart of the parking strategy is a wall following controller. Shih-Jie and Tzuu-Hseng (2002) proposes a fuzzy logic scheme as follows. The variables shown in the figure represents the following d1 distance between the rear end of the CLMR and the wall d2 distance between the front end of the CLMR and the wall Dist is the desired distance between the wall and the CLMR The objective of the controller is get d1 equal to d2 which is the desired distance from the wall Dist . The scheme suggested is a 2 input one output scheme which controls the steering angle of the CLMR. Since the CLMR in this project is a three wheeled one the turning is done by varying the speeds of each wheel. The input variables to this control scheme are as follows if the CLMR is moving forward . Input1 = d2 Dist (2.9) Input 2 = d2 d1 (2.10) and if the CLMR is moving backward Input1 = d1 Dist (2.11) Input 2 = d1 d2 The output of the controller is the amount by which the CLMR needs to turn in a given direction. The fuzzy membership functions for Input1, Input2 and Steer are shown below The membership functions are equally divided triangular membership functions. The Rule Base for the wall following is shown in the table below. It is based on sliding mode control (Li et al, 2000) The rules can be an represented linguistically as If (Input1 is Positive Big) and (Input2 is Negative Big) then (steer is Zero) If (Input1 is Positive Big) and (Input2 is Negative Small) then (steer is Positive Small) and so on 25. If (Input1 is Negative Big) and (Input2 is Positive Big) then (steer is Zero) The defuzzication method used here is centre of gravity which is good for fine control The final fuzzy logic entire controller can be summarized as follows Summary With the kinematic equations of the CLMR and the equations describing the sensor positions, a model can be constructed. With the parking strategies and a fuzzy logic controller now developed we shall discuss an efficient methodology in taking these designs into implementation. Model Based Design Methodology Overview The advances in microprocessor technology in the early 70s brought about a change in the way control systems were developed. From electrical relays built into ladder like networks and programmable logic controllers , controllers were being developed around a computer built with adequate hardware and software. Traditionally most of these control software development was based on paper designs and manual programming followed by verification activities such as code inspections and a unit/integration test (Guido Sandmann and Richard Thompson 2008). Many of these activities lack tool automation, and are very time consuming. Thus they are error prone and time consuming. Lack of tool chain integration provides another opportunity for errors to be injected into the software that are often detected late and at high costs to the development process and so involve manual interaction. Model Based Design is software design methodology used to address these issues. The steps involved are in MBD ,some of the commercially available tools and the tool chain choices for this project are discussed below Model Based Design Process The Model Based Design process can be divided into the following steps (NI Developer Zone, 2006). System Definition System definition involves the design process of a particular problem in consideration. It is mostly a conceptual design where in the problem and solutions are analyzed. Modelling Simulation The step implies that the analyzed design is simulated using a graphical based simulation tool. MATLAB-SIMULINK, ASCET-MD etc are some examples of modelling tools. Designs here can be easily changed verified and re designed if necessary. Rapid Prototyping If the hardware of production controller is not available during the design phase a generalized hardware controller maybe used to test some of the simulations. This is the rapid prototyping phase. Targeting Targeting refers to getting the software code executing on the production hardware. This stage involves the use of auto coders tools that generate C code directly of graphical models, cross compilers and other tool chains that facilitate this. Hardware in the loop Testing Hardware in the Loop testing is used while developing control strategies for plant models like engines. It provides real time simulation of a real world plant model. System Testing This is the last step in the design process wherein the controller is tested on the real plant. Summary Of the stages in Model Based Design discussed above, only the most relevant one will be applied to this project. Beginning with system definition, modelling simulation proceeding to targeting and finally onto system testing will be the stages followed in this project. MATLAB/SIMULINK, Stateflow, Virtual Reality Toolbox, Fuzzy Logic Blockset would be the tools used for modelling and simulation while Real Time Workshop Embedded Coder would be used during targeting. A detailed list of other tools will be dealt in the next chapter. Introduction Lego Mindstorms NXT is a robotics kit which consists of mechanical building blocks and electronic sensors. The highlight of this kit is the programmable brick called the NXT. The NXT is a 32bit ARM7 based microcontroller which allows motors and electronic sensors to be easily interfaced .Users can also run custom programs written via a GUI based programming language. The language provided by Lego, though very simple and intuitive to use does not exploit the true potential of NXT. Over the years, advanced users of the Lego Mindstorms have been successful in creating custom tools that apply every imaginable concept of embedded systems. The following chapter discuss some of these software tools and hardware details relevant to this project. The most important part of this is to be able to design , simulate and test the robot using MATLAB Simulink. Ultrasonic Sensor The Lego Ultrasonic Sensor is shown below. It is mainly used for distance measurement. It has a range of 255 cm and is accurate to about +/- 3cm One of the tasks of Model Based Design is to be able to program the NXT from Matlab Simulink environment. The tools required to automate this process are discussed below John Hansens Enhanced Firmware Firmware in embedded systems term is referred to the basic software that is initially run on a hardware device. It performs basics factions like initialization of devices , integrity checks on memory and so on similar to BIOS on a standard PC. The NXT brick , out of the box , has a standard firmware installed. This is designed to be used with the software provided. In order to write programs in C and realize the true potential of the NXT, a custom firmware has been written by John Hansen. This allows the NXT to be programmed by either using the provided software or by programming in C and using other tools which will be explained later. The NeXTTool The NeXTTool is a program that allows communication between the host PC and the NXT brick. It can do various tasks, but most importantly it is used to download custom programs onto the NXT. The nxtOSEK nxtOSEK (previously known as LEJOS OSEK) is an open source real time operating system for LEGO MINDSTORMS NXT. It contains device drivers from leJOS NXJ, an open source program that allows users to write Java programs on the NXT and a real time operating system source know as a TOPPERS OSEK. C or C++ can be used to write custom programs and compiled with the nxtOSEK using the GCC tool chain (Takashi Chikamasa, 2008) The Embedded Coder Robot NXT Blockset is one of the key elements in applying Model Based Design Techniques to the Lego Mindstorms NXT. These blocks are custom Simulink blocks used in the controller side and serve as inputs and outputs to the real world. A word of caution. Custom blocks especially hardware related blocks behave different behaviour in simulation and code generation . For e.g. an ultrasonic sensor block will not directly give sensor readings. The behaviour of the ultrasonic sensor will have to be separately emulated. During code generation process, a function call to the ultrasonic device is placed where the block is used. This ensures the program using the block gets the value directly from the sensor. The details of the blocks used for this project are discussed below There are two blocks that have to be for an ultrasonic sensor blocks consist of two blocks. The Ultrasonic Sensor Interface block and the Ultrasonic Sensor Read block. Servo Motor Blocks Fig 4.5 Servo Motor Blocks The working of the Servo Motor is similar to the ultrasonic block as explained above. The details of the block are given below. Data Type int32 Dimension [1 1] Data Range 0 to 255 [cm], -1 (the sensor is not ready for measurement) Port ID S1/S2/S3/S4 Summary Tools concerning with the implementation of a Matlab Simulink design on a Lego Mindstorms NXT were explored here. However the most important of all is to simulate a working design. The next chapter discusses the implementation of the parallel parking strategy and the simulation results. Parallel Parking Simulation An integral part of Model Based Design is being able to simulate and get the desired results before implementation. The following chapter discusses the results of the controller developed in Chapter 2. For verification of the controller a Simulink model developed by Takashi Chikamasa, (2006) was used. The model was of a 3 wheeled robot with the motor dynamics included. A 3-D environment was provided using the Virtual Reality Toolbox. The environment however has been changed to suit the parallel parking problem. Parallel Parking Strategy The controller algorithm was developed in Simulink using Stateflow and the Fuzzy Logic Toolbox. A 2-D plot of the trajectory path traversed by the CLMR is shown below. Conclusion and Recommendations The parallel parking strategy implemented did show good results. However, real life scenarios may be very different. For example, the controller depends on wall following. This implies there has to be 3 sides closed in a gap for the parking controller to work. The development of the algorithm was with the intent of being able to execute it on a Lego Mindstorms Kit. However, there were some issues regarding this. The main being lack of a floating point unit on the NXT Brick. Though it is possible to execute floating point programs on the NXT, it causes severe performance issues. The controller developed used the fuzzy logic blockset which inherently uses a lot of floating point variables. One method to overcome this draw back could be developing a fixed point version of the fuzzy logic blockset. Other parking strategies involving classical control could be experimented with Lego Mindstorms. Complex tasks like path planning could be executed on a computer communicating with the NXT via Bluetooth and the control tasks could be implemented on the NXT using fixed point math. However, with Model Based Design, being able to write programs in Simulink, simulate it and be able to execute this on the Lego Mindstorms opens a whole new dimension of what can be done ; limited only by our creativity! Bibliography C., Ho, C., Lin, S. Li, T. (2005). Omni-Directional Vision-Based Parallel-Parking Control Design for Car-Like Mobile Robot. Proceedings of the 2005 IEEE International Conference on Mechatronics, 562-567. De Luca, A., Oriolo, G., and Samson, C. 1998. Feedback control of a nonholonomic car-like robot. In Robot Motion Planning and Control, ed. J.-P. Laumond, 171-253. Berlin: Springer-Verlag Dongbing, G. and H. Huosheng (2000). Wavelet neural network based predictive control for mobile robots. Systems, Man, and Cybernetics, 2000 IEEE International Conference on. Galijasevic, A. M. a. Z. (2006). Model-Based Design Shortens Development Time of Motor Control Applications. Embedded Technology Journal. Guido Sandmann and Richard Thompson (2008). Development of AUTOSAR Software Components within Model-Based Design. The Math Works, Inc. Holve, R. Protzel, P. (1996). Reverse Parking of a Model Car with Fuzzy Control. Proceedings of the 4th European Congress on Intelligent Techniques and Soft Computing EUFIT96, 2171-2175 Kuang-Yow, L., C. Chian-Song, et al. (1999). Parallel parking a car-like robot using fuzzy gain scheduling. Control Applications, 1999. Proceedings of the 1999 IEEE International Conference on. Li, T.-H. S. and Shieh, M.-Y. (2000). Switching-type fuzzy sliding mode control of a cart-pole system, Mechatronics 10, 91-101. NI Developer Zone (2006). Shortening the Embedded Design Cycle with Model-Based Design, Sep 6, 2006. Available from World Wide Web: http://zone.ni.com/devzone/cda/tut/p/id/4074 Pushkin Kachroo and Patricia Mellodge (2004). Mobile Robotic Car Design, McGraw-Hill, Shih-Jie, C. and S. L. Tzuu-Hseng (2002). Design and Implementation of Fuzzy Parallel-Parking Control for a Car-Type Mobile Robot, Kluwer Academic Publishers. 34: 175-194. Takashi Chikamasa, (2006). Embedded Coder Robot NXT Demo. Dec 2006. Available from World Wide Web: http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=13399 Takashi Chikamasa, (2008). What is nxtOSEK? June 2008. Available from World Wide Web: http://lejos-osek.sourceforge.net/whatislejososek.htm Yanan, Z., E. G. Collins, et al. (2003). Design of genetic fuzzy parallel parking control systems. American Control Conference, 2003. Proceedings of the 2003.

Relationship Between Obesity and Socioeconomic Demographics

Relationship Between Obesity and Socioeconomic Demographics Chapter Five: Discussion The prevalence as well as the severity of obesity in adolescents is increasing at an alarming rate, making it one of the most serious health problems affecting this age group. In this study, a total of 161 adolescents (15.6%) were overweight and 224 ones(21.6%) were obese. A study conducted by National Health and Nutrition Examination Survey (NHANES 1999-2000) showed thatapproximately 30% of adolescents were at risk for overweight and 14% were severely overweight or obese (Troiano and Flegal, 1999). In this study, the prevalence of overfat was 9.1% and obesity was 21.8%. A study conducted by Lee ea al. (2006) showed thatthe prevalence of total 555 adolescentboys were overfat (20.4%) and 8.3% were obese. In our study, prevalence of obese adolescents, according to both BMI and total fat, was higher than overweight;this could be attributed to high rate of fast food consumption among adolescents 72%. Fraser et al. (2012) conducted a study in the United Kingdom and observed anassociation between obese adolescents and fat food consumption. The prevalence of waist circumferences≠¥90th percentile in this study was 9.4%. This is consistent with Spain’s result, prevalence of waist circumferences≠¥90th percentile among adolescents was 11.6% (Schr à ¶der et al., 2014). Association between anthropometric measurements and socio-demographic characteristics: In our study, the BMI was significantly related to family income (p=0.004). About 25.7% of obese adolescents had families whose income was >800 JD after adjusting variables effects of results including age, smoking and physical activity. Shafaghiet al. (2014) studied the relationship between BMI and family income, 22.4% of obese adolescents were from families whose income was high. Total fat was significantly associated with adolescents age (p= 0.027). Adolescents aged ≠¥12 and ≠¤14 years old were more predictable to have high fat percentage (25.6%) than adolescents aged ≠¥ 15 and ≠¤17 years (18.9%).This finding was consistent with Northstoneet al. (2014). In our study, total fat was related to family income significantly (p=0.022). Kubiket al. (2003) conducted a study of 844 students; the study showed that students with high family income tended to consume sweetened beverages and high-fat snacks. Region affected significantly total fat among adolescents (p=0.049). The prevalence of obese adolescents were higher in middle area than north and south areas; that could be attributed to high fast food intake in middle area (48.2%) comparing to north and south areas (35.3% and 16.6%respectively). Limited data to explain relation between body fat content with father’s and mother’s education. Trunk fat was significantly associated with adolescents age (p= 0.027). Adolescents aged ≠¥12 and ≠¤14 years old were more predictable to have high trunk fat (15.4%) than adolescents aged ≠¥ 15 and ≠¤17 years (10.8%). Fox et al. (2000) reported thatadolescents aged 11- 13 years were associated with high trunk fat using magnetic resonance imaging (MRI). Association between blood pressure and socio-demographic characteristics: Blood pressure was significantly related to adolescents’ age (p0.01).This relation showed that 35.7% of adolescents aged ≠¥ 15 and ≠¤17 years had stage 2 HT compared to only 20.3% among adolescents aged ≠¥12 and ≠¤14 years old had stage 2 HT. Mouraet al. (2004) concluded a study on 898 adolescents,prevalence of elevated blood pressure in students aged ≠¥ 15 and ≠¤17 years was more than students aged ≠¥12 and ≠¤14 years. Effect of food categories on the prevalence of blood pressure among adolescents: Fruit and vegetables consumption were significantly related to blood pressure (p=0.008 and p=0.033 respectively). This finding was consistent with the findings of studies (Whelton et al., 1997, Whelton et al., 2005, Appel et al., 2006, Witham et al., 2009). Apple et al. (2006) studied the contents offruit and vegetables from vitamins, minerals and fibers. Fruits and vegetablesalso contained potassium;their increase in potassium intake was associated with significantly reduction in blood pressure. The increase in potassium intake had same lowering effect on blood pressure as decrease in sodium intake. Potassium had a major role in balancing out the negative effects of sodium. Wheltonet al. (1997) recommended potassium for prevention and treatment of hypertension. Increasing serum levels of vitamins A, C, E (Appel et al., 2006)and D (Witham et al., 2009)were associated with lowering blood pressure. Meta-analysis suggested that increasing the dietary fiber intake had a lowering effect o n blood pressure (Whelton et al., 2005).According to this study, chocolate was significantly related to blood pressure (p=0.013). Studies explained chocolate’s role to lower blood pressure (Fisher and Hollenberg, 2006, Karim et al., 2000, Taubert et al., 2007). Chocolate contained cocoa that include polyphenols specially flavanols. Strong effects of flavnols on blood pressure as a vasodilator were applied by increasing the formation of endothelial nitric oxide. Families’ health status effect on adolescent’s blood pressure: Father’s and mother’s health status was significantly associated with blood pressure in adolescent (p=0.002, p=0.022 respectively). Many studies (Din-Dzietham et al., 2007, Dasgupta et al., 2006, Martin et al., 2004) confirmed that family history of hypertension and cardiovascular disease were risk factors for elevated blood pressure among adolescents. Family history of obesity including fathers’ and siblings’ obesity was significant with adolescents’blood pressure (p=0.004 and p=0.048respectively).Falkner.(2010) reported a positive relation between blood pressure among adolescents and family history of obesity. Association between blood pressure and anthropometric measurements: Alton. (2005) considered hypertension one of obesity risk factors. Lu et al. (2013) conducted a study in China, and found out that the risk of elevated blood pressure prevalence was 1.5 folds in overweight children and was 2.2 folds in obese children. High BMI increased the risk of insulin resistance. Endothelial dysfunction and inflammation led to elevated blood pressure mediated bythe increase sympathetic nervous system (SNS) activity (Tsioufis et al., 2011, Poirier et al., 2006). Our findings confirmed previous findings of high odds of stage 1 systolic hypertension among overweight adolescents 1.8 folds and 2.7 folds in obese adolescents, adjusting for confounding variables -age, smoking status and physical activity. Our result observed that adolescents with waist circumferences ≠¥90th percentile proportionally related to increase in blood pressure.Lu et al. (2013) reported a high significant association (p Increase in total body fat in our study was significant with increase in blood pressure proportionally. Pre-HTN, stage 1 HTN and stage 2 HTN were significant (p=0.009,p=0.004 and pet al. (2002)used DEXA and skinfolds to estimate total body fat and it’s relation asa predictor for blood pressure among adolescentboys unlike girls. Landsberg et al. (2013) explained that pathophysiology of fat accumulation in abdominal region led to an increase in blood pressure by increases in insulin secretion, (SNS) activity, renin-angiotensin-aldosterone system activity, angiotensinogen from intra-abdominal adipocytes, aldosterone production and renal sodium reabsorption. Our findings confirmed previous findings of high odds of stage1 systolic hypertension among adolescents with trunk fat ≠¥90th percentile had 4 times higher odds of having stage 1 systolic hypertension (CI 2.2, 7.1) and 5.5 higher odds of having stage 2 systolic hypertension (CI 3.4, 9.1). An association between adolescents visceral fat with blood pressure was observed among boys contrary girls (Pausova et al., 2012).Matsuzawa et al.(1995) explained increase that the in visceral fat to induce high level of free fatty acid excretion in liver via portal circulation after lipogenesis and lipolysis activity, gluconeogenesis, lipid synthesis and insulin resistance were response actions causedby excusive free fatty acid to induce hypertension and eventually atherosclerosis.Our results confirmed previous findings of high odds of stage 2 systolic hypertension among adolescents with visceral fat ≠¥90th percentile by 7.2 folds. Conclusion: The prevalence of total, truncal and visceral fat in our study were high. Excessfat,especially visceral fat significantly increased the risk for systolic blood pressure individually in older adolescents. The physiological relation between obesity and hypertension could not be attributed to a single factor. Factors that minimized the activity of renin-angiotensin-aldosterone system, sympathetic nervous system and renal sodium excretion had to be controlled, primarily the factors caused by excess fat. This finding based on measures of fat distribution and blood pressure in adolescent boys is important to help tracks cardiovascular risks from adolescence to adulthood. Strength of the Study This research has been conducted for the first time in Jordan to explain the prevalence and relationship between adolescents’ blood pressure and fat distribution. The study depends on data collected from a large sample that is representative to Jordan as a whole. Limitation of the Study An addition of a 24-hour recall form with this study combined with study’s FFQ could be more precise to estimate dietary and lifestyle habits among adolescents. Recommendations: Serious policies and actions for the sake of prevention, control weight and body fat specially as risks for elevated blood pressure, should be taken to apply an appropriate intervention on affected adolescents. Raise the schools’ role is for mass public enlightenment and health education on the threats of some nutritional behavior and lifestyle.

Atherosclerosis and High Fad Diets Essay -- Health

Atherosclerosis Atherosclerosis, which is a chronic inflammatory disease amongst the arteries of the human body, remains the principal cause of cardiovascular related disease (Gets, 2011). Atherosclerosis results from a complicated relationship between different factors such as lipid metabolism, blood coagulation elements, cytokines, hemodynamic stress, and behavioral risk factors. (Singla et al., 2011) The pathogenesis of atherosclerosis involves oxidative stress, endothelial dysfunction and chronic inflammation, which are initiated in response to high plasma lipid levels, especially Low Density Lipoproteins. (Yu et al., Getz., 2011) Atherosclerosis is a benefactor to the pathogenesis of myocardial and cerebral infarctions, gangrene and loss of function in the limbs, which results from an inconsistent inflammatory-fibro proliferative reactions to destruction of the endothelium and smooth muscle of the arterial walls (Morenoa et al., 1992). Researches have found that free radicals and reactive oxy gen species have been suggested to be part of this pathophysiology (Calderon et al., 2008). As atherosclerosis progresses over the decades, there seems to be lesion growth that are mostly facilitated by cellular adhesion molecules, which are expressed on the vascular endothelium and on circulating leukocytes in reaction to inflammatory stimuli; this is largely due to the recruitment of inflammatory cells from the circulation and their trans-endothelial movements. (Blankenberga et al., 2003) furthermore, there is now an agreement that atherosclerosis characterizes a state of heightened oxidative stress characterized by lipid and protein in the vascular wall (Singla et al., 2011). Over several decades Atherosclerotic plaque matures a... ...: 24–38. doi: 10.1373/clinchem.2007.097360 10) Bayes-Genis A, Conover CA, Schwartz RS. The insulin-like growth factor axis: a review of atherosclerosis and restenosis Circ Res 2000;86:125-130. 11) Blankenhorn DH. Prevention or reversal of atherosclerosis: review of current evidence. Am J Cardiol.. 1989;63:38H-41H 12) Pearson,TA, Blair,SN, Daniels,SR, Eckel,RH, Fair,JM, Fortmann,SP, Franklin,BA, Goldstein,LB, Greenland,P, Grundy,SM, Hong,Y, Miller,NH, Lauer,RM, Ockene,IS, Sacco,RL, Sallis,JF, Jr., Smith,SC, Jr., Stone,NJ, Taubert,KA: AHA Guidelines for Primary Prevention of Cardiovascular Disease and Stroke: 2002 Update: Consensus Panel Guide to Comprehensive Risk Reduction for Adult Patients Without Coronary or Other Atherosclerotic Vascular Diseases. American Heart Association Science Advisory and Coordinating Committee. Circulation 106:388-391, 2002