The European Conquest of the Americas Essay Example for Free

The European Conquest of the Americas EssayOne of the primary reasons for exploration was the search for the northwest Passage, an imaginary path that could be used to reach Asia without having to go around Africa, or through the Middle East. The Panamanians proved that travel was possible around Africa with a newly kind of boat that utilized wind better, but the Spaniards and other Europeans were more interested in a more direct approach to attain Asia. So they began to head westward.The Queen of Spain commissioned Christopher Columbus to lead an expedition westward to reach Asia, and he instead stumbled upon the most successful failure in history, The Americas. He reached the is get downs of the Bahamas, and thinking that he was indeed in the Indies, he named the inhabitants Indians. Ironically, after making the greatest discovery of the past millennium, his tombstone marked him as a failure, due to the lack of the Northwest Passage.Once the queen of Spain realized the gold mine (quite literally), that was before her, she sent basically an entire army of conquistadors to seize the assets of the natives, and secure it for the Spanish pudding stone.The three Gs are what the Spanish conquistadors sought after. God, Gold, and Glory, all of which they could find in the native inhabitants possession. They harvested the souls of the natives by converting them (whether they liked it or not) to Catholicism, and at the alike time, took all of their gold and silver, and for this cultural rape, they got their precious glory. Even though the natives were devastated by the diseases brought by the Europeans, and the loss of all natural resources, and the loss of culture, and the loss of their religion, language, land, and dignity, they submitted to the conquerors.Now lets discuss for a little bit, the real discoverers of the new humanity, who arent credited for the discovery, but definitely should be. There are m either different accounts of why Lief Ericson trave led to the new world, but the end result is always the same, no matter what version of the story you hear. He arrived in this beautiful land filled with plenty of grapes and lush forests and named the new land Vinland (after the amount of grapes). He made a small settlement that only lasted for 2 years, and then returned mainstay to Greenland. It was recorded in sagas by the nords and in folklore, but still by most, Columbus is given credit for the discovery.After the nords and the Spaniards came the English. The English settled the new world for land. Some were looking for new land to farm and harvest crops with, some were searching for freedom from religious persecution, and others were just looking to start a new life in a new place. They didnt arrive there planning on turning their backs on the crown, or disobeying the empire in any way, and up until the last few years that the 13 colonies were under British rule, there was no need to revolt.The new English settlers were still under the empires control, however, the colonies and settlements were for the most part self-governing, and relatively independent. The only problems arose when the crown decided to impose taxes on the colonists that were unfair and unjust and the colonists got sick of it and decided to lead a full-fledged revolt against the thrown, resulting in massive bloodshed and an entirely new nation with a unique constitution compiled from bits and pieces of other nations constitutions and blended with perfect uniformity to create our United States of America.So, really there were many different reasons for the exploration, settlement , and conquest of the new world, and all of them came from different nations. All in all, the outcome was the cosmos of several new nations which would all eventually break away from the nations which brought them to be. Some would become super powers and others would become 3rd world countries, but without the voyages made by the Spaniards and Nords and Englis h, we wouldnt have any of this.

Distributed Information System Medical Lab Service Information Technology Essay

Distributed Information System medical examination testing ground go Information Technology EssayOnline booking transcription has become a common trend now days in business organisations. With the coming of the internet everything is just a click away.As the cliquish medical c be service provider began its quest for the outgrowth of a laboratory test, diagnoses and treatment services that would be white plagued to serve over blow outlets across the UK, it becomes every web stimulateer responsibility to deal with the ch wholeenges and this challenge still goes on. As developer took on the task, it created a platform for other and its from those existing constitution that refreshful development are based.The distributed health rush strategy should be knowing in a way that guarantees the security of the intentionrs data and it should be designed in the to the highest degree substance abuser friendly way possible, putting in consideration all the accessibility requirement s.1. IntroductionInformation Technology has created a recent surface knowledge do main(prenominal) for business to excel. It has opened many horizons for companies which are looking for better ways to impress their customers. Not only that it has given many options to the firms and helps them in their daily practise tasks. No wonder it is playing a vital role in development of the firm. Research and fuck offment for any firm is very important for future. permit it be long term planning or short term I.T has helped in many ways for example minimising risks, calculating costs, estimating future trends and so on.1.2-Tier computer architectureTechnology is dynamic as it changes day by day making business world easier to survive with excellent management. 3-Tier Architecture is one of the modern engineering science three way interactions in client / innkeeper environment. This architecture was generated to overcome the problems of 2-tier architecture.This consists of three essenti al components as shown in the figure.Fig 3-tier Architecture(Source www.cardisoft.eu//3_tier_architecture.jpg, ingressed on 04/06/2011) node TierThis is the layer where the users interact with the formation. So this is the user interface which is stored in client boniface. This layer sends the data to employment boniface and gets the prove back from there.An exercise TierThis server consist of two layers i.e. line of work layer and data access layer. This is the main layer which process the data received from client server and also interacts with database server.Data TierAll the data are stored in database server which can be retrieve at any time. This layer takes the require from application server and gives the required data back.2. OverviewThe vast development and empowering of todays knowledge in all sectors of our modern life is improving satisfaction, comfort and reliability. There are remark suit fitting effects entering in our medical service sector that make the pa tients and doctors tellingship much satisfactory and exciting. However, patients and Medical care Service lots struggle with disagreeing views about the Laboratory testing system and adoption of proper communication and appointment procedures. Patients look for technological advances to improve the quality and outcomes of medical care system.In new developed system, with the help of emerging web techniques and technologies the Medical Care Service turn into a great improvement by trim early days delay and difficulty. In the online system, Administrative faculty can track patients, staff and can book appointment for patient. Doctors will be able to access patient learning, their medical history and would be able to arrange for lab testing laboratory staff member will be able to track only sample which is belonged with a patient.2.1 Scope of get off.The main aim of the frame is to create a patients test booking system and manage doctors and staff member exposit that is more streamlined and easy to use for all. The disgorge also aims at ensuring reliability in the medical booking systems so that in the near future the members of the public as well as the health workers find communication between the two parties easy and secure and time saving. By secure we mean a reasonable level of data protection.2.2 Aims and objective.In devote to hit the set target for this aim aims and objectives were set and this includedDevelop a login facility to access details and information easily.Create an online interactive system between patients and Health Care Provider for quicker response (such as fixing online appointment).To design UML Deployment diagram of the system architectureTo design implement Case Diagram of the systemTo design ERD of the backend databaseTo design Class Diagram of the systemTo implement the 3-tier Architecture and design the prototypes2.3 Purpose of the ProjectAfter this project, Medical Care Service will have a efficient appointment system for their patients. Following are the advantages in implementing 3-tier Architecture.Development IssuesComplex application rules are easy to implement in application server.Business logic off-loaded from database server and client, which makes feat excellent.Changes to business logic automatically requested by server changes require only new application server software to be installed. natural covering server logic is suitable to other database server platforms by virtue of the application software.Performance3-Tier Architecture gives superior performance for medium to high volume environments2. Business Key Requirement AnalysisThe main requirement for Medical care Service provider is to overcome with the problem of Traditional database system. So the aim of the project is to develop Web Base applications and implement 3-tier architecture system.There are three signalize interfaces with contrastive functions for incompatible users.AdministratorAdministrator canLogin to the sys tem using login form.Track PatientsEnter Staff InformationBook Appointment for PatientsDoctorsDoctors canLogin the system.Access Patients InformationAccess Patients Medical historyArrange for Lab testingLaboratory StaffLogin the systemTrack Sample (Associated with Patients)3. Model Used for System DevelopmentThere are different types of methodology for the development of system such as Waterfall Model, Spiral Model, Prototyping Model, and Rapid Application Development. Among them Prototyping Model was selected for the purposed system.3.1 Prototyping ModelIn this model, the problems of the existing system are defined. The requirements are control down into different parts. For each requirement different prototypes are designed and tested separately. If the systems do not give the expected output, then again different actions are taken to construct the system.4. Feasibility StudyThe study involves a complete research for the project it looks at some of the features that could be tran slated into reality. This stage helps project developers to know accurately they can deal with the process. It is therefore a critical phase which requires a detailed study be carried out. Feasibility study is the initial study undertaken in the lead the actual project begins to highlight the possibility of the project success. It is an analysis of possible options and solutions to problems and provides suggestions on the best alternative.4.1 Technical FeasibilityThe project Medical Care Service runs on any windows system as well as in World Wide Web. Many organizations use the web server because it is a common and very user-friendly interface to develop ASP.net enabled programs in the Internet. The necessary technologies geted to run this project are available without any new software to be installed. The software ASP.net and Microsoft Access which is commonly available and widely popular software existing in the market. It comes with features to access the Internet in an efficie nt approach. Thus, by using this all the modules are able to perform the tasks required. The task is to produce a product that reflects the user mind.4.2 Operational FeasibilityOperational feasibleness is the evaluate of how well the explanation of problems will work in the organisation and also determine how people feel about the system project. In this area particularly, problems within the login areas and security validations that were sighted, A project is therefore said to be operationally feasible if it achieves the needs and expectations of end users. User acceptance is a tell apart determinant of operational feasibility. This project does not require any special memory or enhanced features in the system in order to run. preferably it will consume less memory and will operate efficiently even under normal speed.4.3 Economic FeasibilityEconomic feasibility is the measure of the cost-effectiveness of an information system solution. Regarding economic feasibility, the project is a less expensive one. As a whole, the project does not demand any special feature. It makes use of the available resources and provides a better performance in convinced areas.5. Languages Used for System DevelopmentIn this phase, the required hardware, software and people required for the project are selected. The following software is employ for designing.5.1 Microsoft Visual Studio 2008 (ASP.net)Microsoft visual studio is an integrated development environment (IDE) from Microsoft which can be apply to develop console and graphical user interface applications along with Windows Forms applications, web sites, web applications, and web services.Visual Studio 2008 was upgraded to support all the new features introduced in .NET poser 2.0, including generics and ASP.NET 2.0. The IntelliSense feature in Visual Studio was upgraded for generics and new project types were added to support ASP.NET web services. Visual Studio 2005 also includes a local web server, separate from IIS th at can be used to host ASP.NET applications during development and testing. It also supports all SQL Server 2005 databases. Other new features of Visual Studio 2005 include the Deployment Designer which allows application designs to be validated before deployments, an improved environment for web publishing when combined with ASP.NET 2.0 and load testing to see application performance under confused sorts of user loads.This is used in this project for the presentation tier to design the interfaces for window applications.5.2 VB.NETVisual Basic .NET (VB.NET) is an object-oriented computer programming language that can be viewed as an evolution of Microsofts Visual Basic (VB) which is generally implemented on the Microsoft .NET Framework. Microsoft currently supplies Visual Basic Express Edition free of charge.This language is used for coding of the main functions and process in this project. This is used for the presentation tier.5.3 UML DiagramsUML stands for Unified Modelling Lang uage which is used in the business logic layer in middle tier of 3-tier Architecture. This is specially designed for developers to see the system in different perspective view. There are different types of UML Diagrams such as use case diagram, social class diagram, sequence diagram, deployment diagram. Among them following UML Diagrams are used for this project.Use Case diagram to show how the users interact with systemClass Diagram forms class structure and hearts using design elements such as classes, packages and objects. It also displays relationships such as containment, inheritance, associations, generalization, etc.Deployment Diagram to show the interaction between the components that is relation between hardware and software. This diagram shows the physical architecture of the system.5.4 MS Access 2007MS Access is the database application for Windows, included in Microsoft Office suite which is used to store the data in tables form.MS Access offers many templates which ma kes easy to use. Many big and small organizations use this software for database server in order to store the data in standard tabulation form and retrieve as required.In this project, this program is used to store the data in the database server.6. intention the SystemThe purpose of design phase is to transform the business requirements statement from the requirements analysis phase into design specifications for construction. For this purpose, design phase encompasses following tasksDesign the Application ArchitectureDesign the System DatabaseDesign System Interface6.1 Design the Application ArchitectureFor the design of system architecture the UML diagrams such as Use Case Diagram, UML Deployment Diagram and Class Diagrams are used.6.2 System Architecture DesignClientsIIS5.0ServerBusiness LogicComponentsVB .netLibraryData Access viaADO.NETMiddleTierCLRMCSDatabaseMs Access2007 ServerASP.NET7. Use Case Diagram for Medical Lab Service8. Design the System DatabaseTo design the datab ase of the system, the E-R diagram is prepared at first. Then, the database structure is prepared in the MS Access.8.1 Entity Relationship DiagramERD stands for Entity Relationship Diagram.It is one of the most important analysis diagrams for designing a database which summarise the whole structure of database.In relational databases, the data is split up into tables instead of writing it all out in a single line or record.This removes some of the problems often encountered in building a database.The tables are linked together bythe primary key of one table being present as what is called a foreign key in another table.For National Car separate Retail, the database system main content followingAdminLoginBranchDoctors expandPatientDetailsPatientVisitDetailReportStatusStaffDetailsERD DiagramStaffDesignationStaffGenderLoginuserNameIdPasswordTypecreateDatePatientsPatientNamePatientIdMaritalStatusPatientDOBPatientHistoryPatientAddressPatientPhone runnelTypePatientGenderPatientBookingDate StaffDOBBranchFaxBranchPhonedressBranchNameHasBranchIdBranchHasVisitDetailPatientvisitIDDoctorsIdTestDatePatientIdArrange TestDoctorDetailsDoctorsNameDoctorsIdDoctorsGenderDoctorsAddressDoctorsSpecialDoctorsPhoneBookingHasStaffPhoneIdStaffAddressStaffIdStaffNameStaff Detailspostal codeBranchAddressThe above diagram is entity relationship diagram for Medical Lab Service explaining the relationship between the entities and their attributes. The attributes shown in the diagram are their primary keys.9. Database StructureThe database was designed using MS Access with the name Medical.mdbList of the various tables and their descriptions are as followsS. No.Table NameDescription1AdminLogin entrepot Login information2BranchStore Medical Lab Branches details3DoctorsDetailsStore Doctors information4PatientDetailsStore Patients booking details5PatientVisitDetailStore Patients Visit Detail For Medical Test6ReportStatusStore Patients Report Status7StaffDetailsStore Lab Staff detailsBelow is the more detail of database structure.Branch TableNameData TypeSizeNulls?Default ValueExtraBranchIdNumberLong IntNoBranchNameText30NoBranchAddressText50NoPostCodeText20NoBranchPhoneText20NoBranchFaxText20For more detail refer to appendix Medical9.1 Design the System InterfaceThis is the Index page of the Web Based system for Medical Lab Service where the user logins and does other processing.This is the Medical Lab Service index page from where user can process further.For more prototypes refer to appendix prototypes10. CodingCoding should be done according to design specifications in order to meet business requirements. VB.NET was used as the server-side script.Including entire code of the system would make the system unnecessarily lengthy. Hence I have included code of some important functionality and presented a brief explanation.11. Implementation and Testing of SystemAs I mentioned before this is the web based application so the other Medical Lab Branch can be accessed this System through internet. When the system gave expected result then it was implemented to the entire branch and old traditional system was completely removed.The list below is the test plan for the system.LoginAdd/Update/ delete Branch Detail (Admin)Add/Update Delete Patients Booking (Admin)Add/Update Delete Doctors Details (Admin)Add/Update Delete Staff Details (Admin)Add/Update Delete Test Arrangement (Doctors)Add/Update Delete Report Details (Lab Staff)Searching from Admin(Branch, Doctors, Patients, Lab Staff)Searching from Doctor (Patients History, Test Details)Searching from Lab Staff (Search Report Status)12. User DocumentationAfter the completion of the whole project the final user document was prepared which content all the information of the system. The user guide was prepared and different training was given to employees of the Medical Lab Service so that they can be beaten(prenominal) with the new system.13. ConclusionThis report is prepared as the System documentation for Web Based Application Designing for a Medical Lab Service.This project provided me with good professional practice in applying our knowledge of Information Systems to address business problems. During this endeavour, I learned to write a suite of programs that encompass the main facets of business computing. I was able to obtain an in-depth knowledge of a formal coding language. I have been able to produce relevant documentation in support of the developed system. With the preparation of the projects, I have learned the efforts time required to prepare a professional system. I gained knowledge about different phases methodology of a project, which supports both the system development operation and support stages of the system life cycle.Hence with the development of this system, I understood the real need and value of having 3-tier Architecture System. I learnt that coding is only small part of system development and that greater effort should be placed in understand the business re quirements. Understanding business need is a challenge and getting application built to suit it is a whole lot another theme by it self14. ReferencesReference BooksJeffrey L. Whitten, Lonnie D. Bentley, Kevin C. Dittman, Systems Analysis and Design Methods, Fifth EditionRoger S. Pressman, Ph.D., Software Engineering A Practitioners Approach, Fifth EditionVisual Studio 2008 paid (ASP.Net)

Radiation Exposure In Intraoral Radiography Health And Social Care Essay

Radiation Exposure In Intraoral Radiography Health And affable C ar EssayDental radiography is one of the most frequent types of radiological procedures performed. One of the projections that have been done in the dental radiography is the intraoral radiography, which subject matter the film is put inside the patients mouth. The intraoral stern be divided into four, which are bitewing view, periapical view, occlusal view and full mouth series. There are conventional intraoral radiography and another(prenominal) one, with the advances in technology, the digital intraoral radiography is been developed. In this new imaging modality, the radiographic film is re inductd by a sensor for the X-rays. The signal temporarily stored within the sensors is transferred to the computer, which displays an name that may be filed, interpreted, manipulated and quantified. The digital intraoral radiography is divided into two, which are two fundamentally different concepts for direct digital dete rmine acquisition, the CCD-based (charge-coupled device) and the Storage Phosphor systems.The intraoral radiography is state to have a starting epoch motion picture battery-acid received by the patients. consort to the several sources that can be trusted, the film dose received by the dental patient equivalent to a few days worth of background ray of light environmental radiotherapy impression or similar to the dose received during a cross-country airplane flight. Digital dental radiography is more preferable beca hire although film has been an inexpensive and reliable image receptor in dental radiography for a long fourth dimension, the advantages of digital dental radiography over film include providing a lower radiation dose, a alert availability of radiographs, the possibility of image enhancement and no need for film processing chemicals.DOSES IN INTRAORAL RADIOGRAPHYIn digital intraoral radiography, the mean moving picture time and radiation surface dose for the PS P is greater than that for the CCD system by a factor of 2.45. However, there was also a significantly high repeat pose using the CCD system compared to the PSP system. Therefore, despite the CCD system requiring more repeat exposures, the radiation received by the patient is little. CCD systems showed a larger dose reduction in comparison to PSP imaging plates. Another require inform that the dose reduction as a result of shorter exposure times exceeded the increase in doses as a result of the greater number of radiographs with both digital systems. However, with the CCD sensors the dose reduction per exposure was almost can mobile phoneed out by the increase in the number of radiographs interpreted.Although the patient exposure associated with dental radiography is relatively low, intraoral radiography should be optimised in order to keep the radiation risk as low as reasonably achievable, something that is widely known as the ALARA principle hardly at the same time, produc e a best quality of image. Any radiological procedure should be justified and modified in order to keep the radiation risk as low as reasonably achievable, especially to the children.Compared to adults, children are more sensitive to the radiation exposure. Dose assessment is recommended to be performed on a regular basis to ensure that patient exposure is always unplowed within the recommended levels and at the same time, the malfunction of the equipment also can be detected. All radiological procedures carried out on children must adapt to special radiation protection measures, which aims at recognising and implementing possible dose reduction strategies in order to eliminate unnecessary and therefore unjustified radiation exposure. Over the past 20 geezerhood both the X-ray units and the X-ray receptors used in dental radiology have been evolved. Modern dental X-ray units incorporate high oftenness generators, operate at higher tube potentials and produce X-ray spectra that hav e higher mean energy and therefore are more penetrating compared to those produced by older dental X-ray units. These improvements have contri justed in the reduction of the radiation dose to the entrance skin surface of the patient and the enhancement of image quality.According to Hart (2009), the new adult reference dose for intra-oral radiographs (2.3 mGy) is 40% lower than the 1999 value (4 mGy), probably owing to the use of degradeder film-screen and digital systems. This is the first time that a national reference dose for intra-oral radiographs on children has been recommended (1.5 mGy), and it is, 35% lower than the corresponding adult value.Some studies show that there is a large dose variation amid different X-ray units used for the same radiographic projection and it is relatively low. However, although radiation exposure from intaoral radiography is considered to be low, the patient may have a chance to undergo repeated dental radiological procedures. Therefore, the ac cumulated effect of the radiation exposure should be taken into consideration. Salivary secreter and the thyroid gland are among the organs at risk in dental radiology. Salivary gland, which often lies within the primary beam in intraoral radiographic projections has been shown to receive dose from 0.02 mGy up to 0.1 mGy per examination.As stated by Looe et al. (2006), dose received by the thyroid gland, in the first place due to bedspreaded radiation, is comparably less than those received by the salivary glands. On the other hand, the thyroid gland is one of the most radiosensitive organs for children and dose imparted on the thyroid gland should be minimised whenever possible.Diagnostic reference levels (DRLs) have been introduced by the European Union in the Medical Exposure Directive (MED) (97/43/Euratom). The directive requires the member states to sanction the establishment and the use of DRLs and to ensure that implementation guidance is available (Poppe et al., 2006). A good practice is established when the required levels are not exceeded. The DRL is very of the essence(predicate) because pathetic techniques or machine malfunctions in the case where they are consistently exceeded can be detected during the examination, so that appropriate corrective action could be undertaken. Patients increased their chance to be subjected to unnecessarily high-radiation doses due to unsatisfactory equipment or inadequate techniques.To establish the DRLs, entrance surface dose (ESD), dose area produce (DAP) or other dose-related quantities may be used. In the intraoral radiography, DAP has been chosen as the measurement quantity as it could be measured without the patient in place and the field size of the beam is directly reflected on the measured value. Rectangular collimator is preferable compare to the cylindrical collimator because the rectangular one can fit the size and shape of the film better, levelthough most X-ray units in intraoral radiography i s equipped with cylindrical collimators. Furthermore, the introduction of DRLs has lead to DAP meters being installed as an integral part in radiology equipment used for the automatic registration of patient dose. The DAP meters could also be a possibility for panoramic units. It is completed with the advent of digital radiography and the use of automatic exposure control for these examinations, so, such equipments would allow easy monitoring and follow-up of individual patient doses. It has been suggested that this dose area products are closely gibe with in effect(p) doses under specific circumstances because DAP are directly measurable or indirectly accessible from exposure.In instance, Poppe et al. (2006) stated that the measured DAP values for maxilla molar examinations range from 3.8 to 134.8 mGy cm2. The minimum dose measured for non-digital systems was 17.4 mGy cm2 and the maximum value measured was 134.8 mGy cm2. The highest third quartile value was calculated for occlus al examinations, whereas the lowest value was calculated for inframaxillary incisor examination.Moreover, there is a large difference between patient exposures among different dental facilities. Sometimes, the differences are up to a factor of 35 for the same examination. This s due to the inconsistencies of radiological practices performed in clinical routine such as different X-ray units, exposure techniques, film speed or even inadequate exposure setting and film developing procedures, and further. It can be seen that many dentists do not preferable using the dose-optimized programmes for the faster films. In addition, the correlation between DAP and tube loading may also be used as a rule of thumb in determining the imparted dose on patients. Thats wherefore it is necessary to have the DRLs laid out as guidelines.In intraoral radiography, periapical is the most commonly performed and usually two to four teeth are shown on the image providing full tooth structure, including pulp , root and gum anatomy. On the other side, bitewings are taken to show the upper and lower teeth together on a bingle image while occlusal radiography demonstrate the dental arches at right angles to the occlusal plane.Although DRLs are useful in optimising radiological procedures by identifying inadequate exposure techniques, they dormant got the disadvantage. The problem is, they are lacking information in the risk associated with the radiological procedure. So, the other alternative is by using the conversion coefficient. It is used to estimate stiff doses from DAP values have been published for common radiological procedures, including in intraoral radiography.In intraoral radiography, basically, thyroid gland and superstar tissue receive only a little(a) fraction of dose caused by scattered radiation within the phantom except for occlusal examination of the maxilla where high dose was measured at the brain tissue. So, we can say that overall skin dose is also relatively lo w as only a small fraction of skin was opened directly to the x-ray beam. Moreover, salivary gland which often lies within the primary beam is exposed to high dose during intraoral examinations. This gland received highest dose followed by the red bone marrow. Then, the mandibular angle also was exposed to a high exposure during most of the dental examinations. Doses measured at the thyroid gland and brain tissue were only attributed to scattered radiation and therefore considerably low. However, only low dose was recorded at the third cervical vertebra mainly due to scattered radiation.The other factor that determines the exposure dose in the intraoral radiography is the type of film. It is remarkable that several facilities using an E or F speed film have higher doses than other facilities using the less sensitive D-speed films. For example, in the category of dentists using X-ray units operating at 65 kV, the lowest dose measured using D-speed film is 3.5 times lower than the hi ghest dose measured using E or F speed film. However, the exposure time for the digital radiographic systems was set to 10-50% of that of E-speed film in most cases of intraoral radiography.However, in some clinics and hospitals, working(a) with faster film type or higher tube voltage is not always associated with lower exposure. Many precaution measures could be taken at no cost to reduce the patient exposure by choosing the appropriate exposure parameters. Operators of X-ray units shall pay special attention to ensure that the right radiological equipment and techniques are used when performing radiological procedures on the dental patient. When using the faster film types, the operator should reduce the exposure time, so that the level of radiation exposure received is not beyond with the adoption level of radiation exposure in intraoral radiography. Still, it is very important for the technologists to be informed about the necessity and grandeur of reducing the exposure times when working with the faster film typesThe quantitative aspects of radiation doses is needed to observe and determine the necessary radiation protective measures and at the same time, can help the superior general public to allay radiation fear in dental radiography. Because, it is afraid to develop certain disease and the highest risk in intraoral radiography is leukemia and thyroid cancer, even in doses as low as 500 mSv. On the other hand, even low doses of radiation can cause changes in the DNA of the cell that may not be lethal but that could cause the mutations that could lead to cancer. Most of these DNA changes are discovered and refurbished before they cause problems, but the repair mechanism is not perfect and some of the changes may persist and accumulate. Non-repairable damage is more likely to occur with higher doses or dose rates but there is a chance that even a single small hit of radiation could produce a mutation that could cause cancer. The more radiation a per son is exposed to, the more chances he has of receiving a non-repaired DNA injury. Similar surveys conducted in dental radiographic facilities over the last 10 years have demonstrated a trend for reduction of the ESD, with the use of faster films and digital receptors, as well as with modern x-ray units and rectangular collimation. The vehemence should be increased to the structures located in the oral region, in particular the salivary glands.At the gonadal areas, the gonads are not in the line of exposure, especially during intra-oral or panoramic radiography. However, the dose to the genetic cells results from scattered radiation in dental radiography. Scatter radiation during dental radiography may result in exposure of the dental personnel in the area. A dentist or dental auxiliary may accumulate perceptible amounts of radiation doses from his repeated exposure to scatter radiation. The precaution also must be highlighted to the pregnant women because the excessive exposure d ose received by the pregnant women may result in spontaneous abortion, congenital abnormalities, microcephaly and decreased mental efficiency.From the study by Brooks (2008), shown that the doses actually used to declare dental radiographs are frequently higher than what can be obtained in ideal situations. For example, a recent study done in Spain that measured entrance doses in several thousand dental offices reported that there was frequently no difference in radiation dose with different films and in different locations within the mouth. According to the revised recommendations for calculating effective dose, dental radiography involves 32% to 422% more risk than that previously thought. Therefore, efforts should be made to reduce dose as much as possible but not at expense of image quality and symptomatic accuracy.In addition, different groups of teeth need different exposure times for obtaining quality diagnostic information. Moreover, the patient dose is determined not onl y by the amount of radiation per exposure, but also by the number of radiographs taken. A recent study shows that the total number of radiographs taken by dentists using digital radiography was significantly larger than the number of radiographs taken by film users. The number of radiographs taken by dentists using solid-state systems compared to film-users while phosphor plate users took 32% more radiographs. The main reason when taking more radiographs is to achieve better diagnostics and rendering about certain condition of the patient. Eventhough it provides better diagnosis, positioning errors occurred more often in digital radiography than in film-based radiography. This is due to the stiffness of the digital sensors that is significantly more difficult to position in the patients mouth, rather than the positioning film and more uncomfortable for the patient although.CONCLUSIONIn conclusion, digital intra-oral radiography is a well-accepted diagnostic tool in dentalpractice. However, some of the claims made by manufacturers of digital systems, are not valid to their full extent. For instance, the dose reduction per exposure is real, but it is still to be determined what the actual dose reduction is because of the fact that dentists tend to make more radiographs when using a digital system.Sometimes, the importance of the level of exposure dose received by the dental patient is underestimated. Due to this, it could lead to the poor characteristics of x-ray device, inadequate film processing conditions and superannuated techniques used. Regular quality control of dental x-ray units can eliminate deficiencies related to equipment. Inadequate technique is a more significant problem, because dentists and radiology technicians are insufficiently educated in the field of radiation protection.Because of that, it is best to select the imaging technique that will provide that information with the lowest radiation dose. To obtain that, dental equipment must stay in good condition, including film processing apparatus and solutions, and use good technique to avoid retakes. In addition, using fast film or digital imaging and small collimation, whenever feasible, will also keep the radiation dose as low as reasonably achievable, or ALARA which is a goal worth pursuing. in general, both entrance and effective doses are reduced when higher film speed (E-speed or F-speed instead of D-speed) or digital imaging is used. In addition, rectangular collimation of the beam also reduces the effective dose because less tissue is exposed in total. There are no such things as necessary routine radiographs the way there are required. Instead, dentists must make radiographs only when they think they are necessary to make an stainless dental assessment or diagnosis to reduce the number of X-rays taken to the minimal needed for dental health. Efficient implementation of the basic principles of radiation protection, particularly which the practice optimization t hrough the quality assurance program, is the only adequate way of reducing the patient dose and at the same time, preserving the quality of diagnostic information.

Barack Obama, Dreams From My Father

Barack Obama, Dreams From My FatherBarack Obama in his depression book Dreams from my Father A legend of Race and Inheritance takes his readers to a beautifully crafted journey of self-discovery. His first book was published over a decade ago and is recently re-published by ergodic House. It is a compelling twaddle of not only race and culture inheritance but in like manner of personal growth, human experience, life lessons and human nature. Obama tells his grotesque life story in a very estimationful and reflective way. I feel this is a story of a very wisely examined life. The circumstance that readers, regardless of social background, cultural heritage or skin colour could find themselves in the story reminds me that as human beings as well we exclusively sh atomic number 18 plenty of similarities and releases.About a few months ago in a very strange concomitant when the Republican presidential and vice presidential candidates stood on stages around the nation asking wh o was Barack Obama? They had a very easy access to their throw question if they would have read Dreams from my father. If they would have read the story they wouldnt have enough knowledge about the man who would serve as 44th president of the country but more about themselves as well.THE fabricationThe autobiography tells the story of the life of Barack Obama up to his admission in the Harvard Law School.He was born in Honolulu, Hawaii to Barack Obama Sr. Of Kenya, a black African and Ann Dunham of Wichita, Kansas, a ashen American, who met as students at the University of Hawaii at Minoa. Obamas parents separated from each other and got divorced in 1964, when Obama was well(p) two years old, and the motive behind the divorce was Obamas father went to Harvard to pursue his PhD but did not have money to take his family with him. Obamas father later on returned to Africa to fulfil his promise to the continent. A kid without his father, Obama formed an imaginary image of his absen t father from the stories told by his mother and his grandparents. He could see his father one more time in 1971 when Sr. Obama had come to Hawaii for a month long official visit, without knowing death could be just a few away. Obamas father died in a car accident after 11 years in 1982.After the divorce Obamas mother remarried to Lolo Soetro an East-West Centre student from Indonesia, and then go to Jakarta. When Obama was just ten years, he returned to Hawaii to function better educational opportunities available in Hawaii, under the care of his grandparents and later his mother. He was enrolled at Punahou School, a clannish college-preparatory develop, in fifth swan w present he was on of the only six black students at the mostly white school. Obama attended the school from the 5th grade until his graduation in 1979. Obama in his writes For my grandparents, my admission into Punahou Academy heralded the start of some liaison grand, an elevation in the family status that they took great pains to let every(prenominal)one know. In the school Obama met Ray who introduced him to the African American community.After finishing high school, Obama moved to Los Angeles, where he enrolled at Occidental College, he describes his life there to be a party lifestyle with the drug and alcohol use. After two years of his party life at Occidental, he transferred himself to Columbia college at Columbia University, in Manhattan, New York, where he majored in semipolitical science. After graduation, he started a business for a year, which did not go very well, he then moved to Chicago there he worked for a non-profit community organizing in the Altgeld Gardens housing project on the South side of the city. He recounts the difficulty of the experience, as his curriculum face resistance from apathy on the part of the established bureaucracy and entrenched community leaders. During this time Obama first visited the Chicagos Trinity joined Church of rescuer only to be mot ivate himself to do something grand in his life.Obama decided to visit his relatives in Kenya before joining the Harvard Law School. Obama uses the experience Kenya to be the riding horse for his books final emotional scene. Relating the story with Obamas life the book includes a great deal of reflection on his let personal racial experiences with the Americans in the United States.A FEW RACISM FACTSI ceased to advertise my mothers race at the age of 12 or 13, when I began to suspect that by doing so I was ingratiating myself to whites this is a quote from the introduction in the book Dreams from my Father. This gives the very first glimpse of the racial discrimination and racial issues faced by Barack Obama mighty from the age of 12 or 13. Obama still had the thrive to continue and achieve everything that he aimed for.There was something about him that do me wary, a little too original of himself, maybe. And white. This is during the time when he describes a job interview wi th a man in Chicago. It seemed that race had been a part of their discussion as the white had a certain air about himself seeing Obama being a black, but instead of getting de motivated and upset about the behaviour from the white Obama took it as an opportunity and showed what his true talent was. And at the end he was able to win the person, which was one of his many passions.It remained necessary to prove which side you were on, to show your dedication to the black masses, to strike out and ca-ca names. Obama discusses this part of his life when he talks about his childhood and his school solar solar days in Hawaii. Though having a white mother Obama faced too many racial discriminations in his school days, which made him vulnerable to the whites.I never emulate white men and embrown men whose fates didnt speak to my own. It was into my fathers image, the black man, son of Africa, that Id packed all the attributes I sought in myself, the attributes of Martin and Malcolm, Dubo is and Mandela. This statement shows that though being a black, Barack Obama did not get emulated with his fate to have born a black, he made it his strength and walked ahead instead of walking backwards and run away from the hardships.Despite having faced so many incidences of racial discrimination and underlying authority Barack Obama had only one thing that was unbitten and that was his never dying spirit and courage and this is what i moot undoubtedly defines his leadership quality.LEADERSHIPRecently I happened to read an article on leadership qualities and how is a person fit to become a leader. To examine the article I decided to experiment with few of my friends, on a casual discussion I asked them who do you think can be a leader? to my amazement the holy discussion turned into an argument whether a leader is born or made. Later on after giving the entire argument much thought I decided to jot down few of the qualities of a leader I could figure out during the discussion. The first thing that I noticed was during the entire conversation there was one friend who did not even attempt to get into the conversation, later when asked he said I dont think thats even a discussion, it was so pointless, Id rather spend my time reading Barack Obama then deciding whether a leader is born or made it is always button to be debatable, thats when I run acrossd that a true leader never gives too much time to such discussions he rather concentrates more on developing his own leadership qualities which he thinks are necessary for his success. One of the other things that I noticed was in a company theres always a person who leads the discussion, gives it a proper flow and concludes it, this group had a leader as well, but the quality i noticed here was a leader always has followers, you take the case of Hitler, Mussolini, Barack Obama, Mahatma Gandhi anyone in that case, they are perfect examples of Leadership and one thing that is common among all of them is they all had their own set of followers. Which I think is one of the plentifulgest qualities of a leader, what is the point of leading a group when you do not have anyone to follow?Summarizing the entire incident i could come up with Five qualities that a leader possesses. They are as followsA leader should beIntelligentClarity in thoughtForward lookingEthicalInspiringNow the important job for a leader is to display his skills or the five qualities mentioned above and at the same(p) time inspiring people to follow. Below is a story of a great leader who doesnt have a name in history, hasnt made it big yet she is a motivation, a role model and has all the qualities for an entrepreneur mentioned above.How often do you get a chance to motivate? How often do you get a chance to touch peoples lives and make them better?Well i just came across a teacher who made it all possible, they called her suffer G.Miss G was a happy, and a fun loving human being, happily married and a perfect husband made her confident, and lively. She came from a political background and as her father she too wanted to do something for the society, she had tried a couple of things already but somehow did not interest her, or rather the work did not approve her, not getting de motivated Miss G joins the Long Island school, Long Beach to try her hands on teaching, little has she thought of what she was getting into, she would have had night mares before step forward to take the job. Her father did not approve of her becoming a teacher, he thought it was too low a profile to work in, she didnt pay attention to it, as she knew she would be able to make her father agree to her pick eventually.She started off her first day as a teacher with a group of students majorly African Americans, who were engaged in gang wars, drugs, fighting etc. She had a hard time even talking to them as they had a typical attitude to the way they lived. They were freshmen at school and obviously hated the fact. The first day she experienced the enmity amongst the students with the issue being the colour of their skin. She has a hard time controlling their fights, but gets hold of it eventually. When she walks out after the school she sees that the whites are on one side of the ground and the black on the other none of them even bothered to interact with the other colour. The very next day she mixes the different colour students within the class to break the ice amongst themselves. That doesnt work very well as many of them feel offended of their colour and suss out coming to the class.She tries to figure out for days together what is it that is stopping 13 year kids to talk to each other and discriminate amongst each other payable to their colour in modern America. And one day something happens that teaches her the real reason, a boy gets killed by one of the whites just because he was black, she learns the fact that one of her students called Eva was also involved in the incident. She wanted to c onfront the girl about it but was warned by the administration of the school to not to do so as it was against the policy of the school. She still tries to confront and learns that the blacks are ill-treated by the American cops for no reason, they were bitten up, shot and jailed just for being a black. Miss G didnt realise what to say when she was confronted with a truth like this.She knew the students wouldnt speak to her directly in the class, but she wanted them to take all their pain and sufferings out so that she could cure them and make them better human beings, because she knew, she had hope in them that they werent as bad as they were made out to be. She then came up with this really amazing mentation of making them keep their journal, she asked them to write any of their experiences that were c omit to her heart. She told them she wouldnt read their journal unless and until they would allow her to. She offered them a closet to leave their journals if they wanted her to read them. And to her surprise everyone wrote in their journals and left(a) them behind for her to read it.The administration of the school was strictly against all the activities that she was doing and wouldnt support her or help her even with the material she required for the class. Miss G didnt give up on the kids, she worked double jobs just so that she could provide them with the materials that they needed. But in all of this her personal life, her happy marriage had started to go on the rough track. Thus she was losing support both from her working environment as well as her husband. But with her determination and passion to make a difference to those kids lives, she continues to teach with all the hurdles and difficulties that she was facing.With all the efforts she was putting in she succeeded in making the class room a home for all the kids she was teaching. Her husband left her, the administration didnt agree with her efforts and the people around her tried every possible way to de motivate her. But she was a warrior princess despite having an emotional breakdown, the threat to lose the job, no home she never gave up or rather never bowed to the situations, she kept fighting.During the entire mess up she was going through for the first time her motivating force was her father. Her father told her I am jealous of what my daughter is being able to do, she did what I had dreamt for myself, which I think in itself is a driving force for any individual. And with the warrior she was this just added to her strength.She motivated the kids to keep their own journals, this time she motivated them to convert their journals into books. The kids already following the footsteps of their teacher readily agree to it, and after months of rigorous work they came up with their own individual books with their own stories. Their own stories of struggle and their own stories of survival, she had succeeded.This motivated Miss G to write her own book for the kids and the e xperience with them. She amazingly called them the freedom writers.My LearningIt is not necessary that you make it big if you are an entrepreneur, it is not necessary that the world should know what a big personality are you. The satisfaction comes from within.One if the question that i came across while reading the book was why doesnt everyone have a name in history? What is so special about the people who have made it big? the answer to the question was their intelligence. Imagine what if everyone had the same wavelength, what if everyone was as quick as Mr Narayan Murthi of Infosys, Mr Warren Buffet the investor, Mr Bill Gates of Microsoft, there would be a new Infosys and Microsoft coming up every day in every different corner of the world. There wouldnt have been any uniqueness in their ventures. Thus intelligence plays a vital role in what you do.Intelligence plays a vital role in what you do but intelligence without clarity of thought cannot be put to the best use. Imagine B ill Gates having an humor of launching Microsoft but doesnt know where, when and how, i think without a overtake vision he wouldnt have been able to do any of it.And lastly having a vision of where you want to be sums up to all the things that are needed to be a leader.Thus a mixture of an intelligent, forward looking and clear minded individual makes it to be the best leader.ConclusionWhether its Miss G or Barack Obama, both of them had their own share of hardships and struggles one thing that kept them going was their never say NO attitude to life. This is what has made them a leader, an entrepreneur and a satisfied human.At the end of the day it is not what you do or what you make out of what youre doing, it is the learning that life offers for the present and the future.Lions sleep 18 hours a day if hard work alone was the secret to success, then donkey would have been the king of the jungle.

The Second World War (WWII) Essay -- World War 2 II Two

World War I was the cause for World War III believe that world war 1 take to world war 2. the main reason is the treaty of Versailles. the allies totally screwed Germany and were totally unfair.The allies forbade Germany to have an army of much than 100,000 men, a fleet of more than 36 warships, submarines of any kind, and military air craft. They could not maintain fortifications or military installations within 50km of the Rhine land. And to all that Germany was required to pay large sums of money as reparations for damages that the allies had taken during the war.The league of nations had the responsibility of keeping the heartsease, and although they did not admit Germany to the league for the first couple of years after the war, Germany was let in in 1926. The league had little power however, and much of this was that it failed to pass through the American system so America stayed out of the responsibility of keeping the peace in Europe. As further proof to the leagues weakne ss, an event that occurred in Manchuria that led Japan to attack, was merely overlooked as an ok reason to attack and let Japan get away with it, and to further this, Japan didnt even care what the league had to say about their little attack.The rise of Hitler brought its problems also. During the great depression Hitler tell that the only way for his country to get out of the de...

Michael Collins :: essays research papers

Michael collins played a major part in Irelands history after 1916. Michael Collins had been involved in the easterly Uprising in 1916, but he played a relatively low key part. It was after the Uprising that Collins made his mark take to the treaty of 1921 that gave Ireland dominion status within the British Empire.Michael Collins was born in October 1890 in County Cork. This area was a heartland of the Fenian movement. His father, also called Michael, instilled in his son a love of Irish poetry and ballads. At school, Michael was taught by a teacher called Denis Lyons who belonged to the Irish Republican Brotherhood and the village blacksmith, James Santry, was a Fenian. He told the spring chicken Michael stories of Irish patriotism and in such an environment, Michael grew up with a strong sense of pride in Ireland and of being Irish.When he was 15, Collins emigrated to London. He worked as a clerk for the Post Office and he lived within the large Irish conjunction in London. T his community was never absorbed into Londons society itself. at that place were many people in London who felt that the Irish undercut the wages paid out to other workers and many in the Irish community felt ostracised. While in London, Collins joined Sinn Fein and the Gaelic League and in 1909, he became a member of the Irish Republican Brotherhood.In 1916, Collins returned to Ireland to take part in the Uprising in Dublin. He fought alongside others in the General Post Office. He played a relatively insignificant part and was not one of the leaders who was court-martialed. Collins was sent to Richmond Barracks and then to Frongoch internment camp in Wales. He was released in December 1916 and immediately went back to Ireland. His goal now was to revitalise the campaign to get independence for Ireland. Collins was elected to the executive committee of Sinn Fein and he led a godforsaken campaign against anything that represented British authority in Ireland - primarily the Roya l Irish Constabulary (RIC) and the forces. The murder of RIC officers brought a tit-for-tat policy from the British. Ireland, post-World War One, was a formidable country to be in. The more killings that were carried out by Collins and the men he led in the newly formed Irish Republican Army (IRA), the more the British responded with like. The notorious Black and Tans and the Auxies were used by the British Army to spread fear throughout Ireland (though primarily in the south and west).

The Class Struggles of 18th and 19th Centuries in Europe Essay

The Class Struggles of 18th and 19th Centuries in Europe Karl Marx wrote the Communist Manifesto in order to give a percentage to the struggling phratryes in Europe. In the document he expressed the frustrations of the lower class. As Marx began his document with the history of all hitherto societies has been the history of class struggles he gave power to the lower classes and sparked a destruction of their opressors.1 He argued that during the ordinal coulomb Europe was divided into two main classes the wealthy upper class, the bourgeoisie, and the lower running(a) class, the proletariat. After years of suffering oppression the proletariats decided to use their autonomy and make a prize to gain power. During the eighteenth and nineteenth century the proletariats were controlled and loaded by the bourgeoisie until they took on the responsibility of acquiring equality through the Communist Manifesto. First it is important to understand the French e conomy during the eighteenth and nineteenth century. The working class people were struggling with their need to get by in life and feed their family and the internal call to make a choice and gain equality. The problem was that the proletariats did not have much of a choice at the time because if they did not work then they did not survive. The struggling class had to agree to what all the owners said and whatever their status, the peasants continued to pay to their lord feudal dues on such land as they held on his estates. 2 It was pass on that a social change was needed since the workers were being so abused and getting no reward for their efforts. The European society during the eighteenth and nineteenth century consisted of ... ...equality.WEB LINKShttp//www.marxists.org/archive/marx/works/1850-csf/csf.htmhttp//eh.net/Clio/Conferences/ASSA/Jan_99/hadeishi.shtml http//mars.wnec.edu/grempel/courses/wc2/lectures/towns.htmlhttp//gwis2.circ.gwu.edu/yamashir/History .htmEnd Notes 1. Karl Marx, Manifesto of the Communist Party, 1848 (France), 1. 2. John Lough, An Introduction to 18th Century France (New York David McKay Company Inc., 1960), 18. 3. Craig Calhoun, Habermas and the Public Sphere (London The MIT Press, 1992), 187. 4. Lough, 53. 5. Gerhard Grempel, The Eighteenth Century Town The Eighteenth Century Town, <http//mars.wnec.edu/grempel/courses/wc2/lectures/towns.html (October 1 2001). 6. Herbert Wilson, The Old Regime in France. (New York Howard Fertig, 1970), 278.