Facial Recognition Technology for Identification

Facial Recognition Technology for Identification Abstract Facial recognition is a crucial factor of everyday identification processes: human beings recognize and evaluate each other by means of the face. Whenever driving licences, identity and membership cards are checked or wherever access is controlled by security staff, the identity is verified by looking into somebodys face. Thus, unlike other biometric features, e.g. the fingerprint or iris recognition, facial recognition is a transparent procedure well-known to human beings. However, especially in the context of the international fight against terrorism it has become obvious that the traditional way of identifying individuals is insufficient. There are certain limits to the natural recognition process carried out by human beings: The recognition performance is not only impaired by difficulties with the recognition of people from other ethnic origin or deceptions due to a different hair-do or beards, but also by subjective impression based on a persons outward. The requirement of successful personal identification in access control and in other cases leads to using the results of biometrics. Biometrics Face recognition is a passive, non-invasive method for verifying the identity of a person, Offers the benefits of its unique facial technology in the form of customized overall solutions for the areas of access control, border control, ID-Management, search for criminals and video surveillance Face recognition has come to be an active research area with numerous applications in recent years. In this thesis, a variety of approaches for face recognition are reviewed first. These approaches are classified according to basic tasks i-e Face Detect, face Normalization, and Face recognition. Then, an implementation of the face recognition method, the Eigenface recognition approach is presented in detail as well as other face recognitions methods i-e Local Feature Analysis, Neural Networks and Automatic face processing are discussed in general. Introduction Ever since the birth of first mankind, human beings have continually been seeking for personal possessions. From the very basics of food and clothes, to cars, houses, and the more recent substantial property of data and information, it is becoming increasingly important that such valuable assets be sheltered by means of security control. Throughout history, the types of technologies used on the access control systems are countless. From the traditional systems such as security guards checking personal IDs to the very fundamentals of keypads and locks and password or entry code, the focus now has moved to the more advance technologies, particularly in todays multifaceted society. Organisations are continuously seeking for a more secure, suitable and economical way of property protection. The problem associated with traditional mechanisms is that the possessions could be lost, stolen, forgotten, or misplaced. Furthermore, once in control of the identifying possession, any other unauthorised person could abuse the privileges of the authorised user. Therefore there is a need of another approach to properly differentiate the correct (right) person from an impostor by positive identification of the person seeking access. Biometrics is one rising development in the field of access control system that provides true identification. Although the word biometrics sound very new and high tech, it is in fact the oldest form of identification known to man. Since the dawn of man, a persons face and voice was used to identify him/her. Before the digital age, a hand written signature was the only method used by a person to assert a unique form of identification that was difficult to copy. Popular biometric systems in use today include fingerprint recognition, iris recognition, voice recognition, and facial recognition systems. These systems are in practice in different organizations like banks, airports, social services offices, blood banks and other highly sensitive organizations. Biometric system offers the most accurate authentication solution and convenience. Biometrics systems can be integrated into any application that requires security, access control, and identification or verification of people. With biometric security, we can dispense with the key, the password, the PIN code; the access-enabler is human beings not something he/she know, or something in his/her possession. Chapter 02 This part of the dissertation provides the general overview of biometrics. Definitions such as Automatic, Physiological and Behavioural characteristics are also discussed as well as different types of biometric systems i.e. one-to-one and one-to-many. General Biometrics Base systems model, how it works and Multimodal Biometrics systems are also discussed in detail. In the last section of this chapter, a comprehensive overview of the right approach in selection of different technologies for an origination in terms of business objective, user acceptance, FFR, FAR, organisational environments, cost and a comparison of all biometrics are also presented. Chapter 03 Different types of biometric technologies are described in this chapter i.e. finger prints, iris and retina, voice, biometric signature and how these technologies work and the main features of these technologies with the help of diagrams. Chapter 04 This chapter is one of the most important chapters which explain the general back ground of face recognition technology and how face recognition works. It gives a brief discussion of how verification and identification is achieved with the help of face recognition system. Actual techniques involved during face verification and identification i.e. faces detection, face normalisation and face recognition are also discussed in detail. Steps involved during the face detection i.e. coarse detection phase and refined search phase are discussed as well as how Normalisation is achieved through different steps i.e. lighting normalisation, scaling normalisation, rotation normalisation and background subtraction. Face recognition and methods of face recognition i.e. Eigenfaces, feature analysis, neural network and automatic face processing are discussed in this presentation. Chapter 05 In this chapter of my dissertation, a proposed model of face recognition system for attendance of university students is discussed. The specification of the system is also compiled after the extensive study of face recognition products of different Vendors. Chapter 06 This final chapter of my dissertation contains the conclusion, future work and issues involved with face recognition system. A review of the biometrics technology Biometrics: An overview In todays networked and digital world the role of system security has a vital importance. In originations a large number of professional people are involved in one form of electronic transaction or another. Securing a companys digital assets and identities is a necessity for financial success. Ignoring IT security increases the risk of losses for any company moving through this electronic world. Logging on to a system by entering user ID and password is very simple but its simplicity makes serious security problems. There are, however, people who use easy guess passwords or leave written passwords near to their computer. In this situation there is no way to confirm that the person is logged on the system using his/her ID and password or some one else, nothing can prevent someone else from accessing sensitive material. Its like a passport system that doesnt require a photograph. In addition, time consuming tasks behind the management of user ID and passwords divert already insufficient resources from other important responsibilities. Establishing an accurate identity is the main focus of the information systems security in recent years and great efforts are made in this field. Two types of identification systems are in use now today. In one type identification system flawed identity checking results in unnecessary duplication, fraud and client disruption, resulting costs and risks. While in other type of identification system an accurate identification procedure and effectiveness may be undermined by unpopularity resulting falsification and evasion. Chapter2 Three conventional forms of identification are in use. Origination ID or smart cards. The use of passwords or Personal Identification Numbers, mother name, place of birth, home address etc. The third form of identification is to identify something unique about a person, such as fingerprints, voice recognition, hand geometry, face structure, iris and retina. This third form of identification is known as Biometrics. Biometrics is a branch of science in which we study, what makes us biologically unique. It is also referred to the science and application of statistical analysis of biological characteristics (Physiological/ Behavioural). In security terms, Biometrics refers to technologies that analyse human characteristics for security purposes. Therefore Biometrics technologies are concerned with the physical parts of the human or personal trait of human being. There are different definitions of security base biometrics that have been circulating for a numbers of years. According to Ashbourn, an expert in Biometrics, Biometrics is a measurable physiological and / or behavioural trait that can be captured and subsequently compared with another instance at the time of verification). [1] The Biometrics Consortium states Biometrics is automated methods of recognizing a person based on a physiological or behavioural characteristic. [2] The international Biometrics Group defines biometrics as the automated use of physiological or behavioural characteristics to determine or verify identity [3] Physiological characteristics are fingerprint, Hand geometry, iris pattern ,retinal, ear shape and facial scans etc Behavioural characteristics are voice pattern, key strokes, signature etc. As mentioned, biometric technologies are anxious with the physical parts of the human or personal mannerism of human beings. The word automatics basically means that biometrics technology must recognise to identify /verify human characteristics rapidly and automatically, in real time. Unique physiological characteristics or behavioural mannerisms are examined in biometrics verification for an individuals identity. Physiological characteristics are essentially unchangeable such as hand geometry, iris pattern , palm prints, face structure and vane shape etc .while behavioural characteristic such as ones signature, voice or keystroke dynamics are changeable and these behavioural characteristics can change over time. They are both controllable and less controllable actions. The initial sample of the biometrics template, which is stored in the data base during the Enrolment, must be updated each time it is used. Although behaviour characteristics based biometrics is less costly and less intimidating to users, physiological characteristics have a tendency to offer greater accuracy and security. In any case, both techniques grant an extensively higher level of identification and verification as compare to smart cards or passwords technologies. A password or personal identification number (PIN) is not unique for an individual ,it can be stolen ,forgotten or lost, while a biometric characteristic is unique to each individual; it can be used to prevent fraud or theft. It cannot be lost, stolen or forgotten. There already many places such as research laboratories, defence (military) installations, VIP offices, day care centres and cash points where access is guarded by biometrics base authentication system. The following biometric identifiers currently obtainable or under development are fingerprints, body aroma, ear shape, face recognition, keystroke dynamics, palm print, retinal scan, iris pattern, signature, DNA, vein check and voice pattern. Biometrics-based Systems A biometric based system is a system that in some way uses physical characteristics or personal traits of a human being. These systems are not only, mainly used for security, but also use for encryption. Encryption The processes of translating a message (plaintext), with the help of software, into a programmed message/encoded text (Cipher text), called Encryption. This is usually accomplished using a secret key and a cryptographic code. [4] Type of Biometrics-based Systems There are two types of Biometrics-based systems. One-to-one systems (Verification system) One-to-many systems (Identification System) One-to-one system (verification) This type of biometric system works on the base of one to one matching and authentication principles where the system asks and attempts to answer the question Am I who I claim to be? At first a biometric sample of a person is provided to the system and then the system matches this sample to the previously stored template during the enrolment mode for that person. The system then decides whether that is the person who claims the identity. After a successful matching of the fresh sample with the stored template, the system authenticates the person. These types of systems are also referred to as verification systems. The verification system is a fast response system because it minimises the use of resources and time by providing biometrics sample/ information to the system which specifies the stored template in the data base for that person. [5] One-to-many system (identification) This type of biometrics system works on the base of one to many recognition principles. The system attempts to answer the question, Who am I? The basic purpose of this system to identify a persons identity by performing matches against all biometrics templates stored in a data base or a data library. A person does not claim his/her identity to the system; instead the person just gives the system some biometric data. The system then performs to match this data to all templates previously stored in the database and decides whether a match can be made. It is not necessary that the system responds with the persons name, it could be the persons ID or other unique identity. These types of systems are referred to as identification systems [6]. Identification systems have a slow response as compared to verification systems. This is because they require much more powerful resources due to the fact that more comparisons are required by identification systems. The biometrics identification system also prevents a person from registering twice on the system and ensures that a person is not already present in a data base. This type of system can be used in a large scale public benefits organisation, such as being used at banks where a person would try opening a second account on another name. This system can also be used with immigration where a person could try to enter the country on false documents. General Biometrics Base Authentication System Model A general biometrics base authentication system model consists of three major components, hardware, software and interface. Hardware is used to capture the biometrics information and software is used to maintain and manage it while an interface with application system that will use the result to confirm an individuals identity. The system operates in two different modes: Enrolment mode Authentication mode Enrolment mode: In this mode a users biometrics data is provided to a system, which stores this users biometric sample in a database or data library as a template. Hardware such as a biometrics readers/ scanners, cameras are used to capture biometrics sample. This stored template is then labelled with a user identity e.g. name, identification number etc. The way biometrics operate Some biometric base authentication systems may need a number of biometrics samples in order to build a profile of the biometric characteristics. These exclusive characteristics are then extracted and changed in to mathematical code by the system. Which is then stored in to the biometric system as a biometric template for the person who enrolled? The template is store in the memory storage of the system, or in computer database, smart card or barcode. A threshold is set in to the biometrics base authentication system according to the level of security [7], (a high threshold is set for high level of security) To secure the template to the person, a trigger or other mean of securing such as personal identification number, or a smart card that store the template which read by a card reader during the authentication mode, are use in biometrics. In some biometrics system when ever a person interacts with the system a new biometrics sample is provide to the system which is compared to the template. If this new sample and stored template is match (the score of new match if exceed from the set threshold then access is granted to that person). As both physical and behavioural characteristics are inconsistent with time, this change may be due to the age of the person, general health condition, working and environmental conditions and time pressures etc. the biometric base authentication system must allow for these delicate changes, in this case before a match is recorded a threshold *1 is set. This can take the form of an accuracy score *2. The comparison between the template and new sample must exceed this set threshold. If it not exceeds the system will not record the match and will not identify the person. This use of a threshold gives biometric technologies a significant advantage over passwords, PINs and ID badges. The use of a threshold affords a tremendous degree of flexibility and if the comparison between the new biometric sample and the template exceeds the stated threshold, identity will be confirmed. Threshold:-a predefine number, often controlled by system administer, which establish the degree of correlation necessary for a comparison to be deemed a match. Score: A number indicating the degree of similarity or correlation of a biometrics match Capture, extraction, comparison and match/non match are the four stages use by all biometric authentication systems. Capture A physical or behavioural sample is captured by the system during enrolment. Extraction unique data is extracted from the sample and a template is created. Comparison the template is then compared with a new sample. Multimodal Biometric System In some environments a signal biometrics identifier base system such as finger scan, face scan or iris scan etc often not able to meet the desired performance requirement of the organization. Different biometrics base identification system such as face recognition, finger print verification and vice verification, is integrated and worked as a single biometrics base identification system. Multimodal biometrics base identification system is use to over come the limitation of the single identifier biometrics base identification system. Initial experimental results reveal that the identity established by such an integrated system is more reliable than the identity established by a signal biometrics identifier base system. [8] Selecting the Right Approach In Different Environment Different biometrics base authentication systems are used. To choose the right approach to biometrics authentication it is necessary to understand the requirement of the organisation, the application of the biometrics system, and characteristics of the biometrics devices itself. Following factors are also important to choose a biometrics base authentication system, which most devices cant store raw fingerprints and that fingerprints cant be reconstructed based on the data stored within these systems. Intrusiveness is another factor affecting user acceptance of some devices, particularly iris and retinal scanning systems. [9] Business objective of the organisation The most important aspect to consider when selecting a biometrics base authentication system is the organisation business objectives. The choice biometrics system must meet or exceed organisational business objectives as well as sustain organisation in the coming years. Business objective is the bottom line where organisation starts and end. User acceptances Some biometrics, such as fingerprints, may be apparent as an assault of personal privacy. The system must not associate with other govt agencies biometrics (finger print) recognition system that most devices cant store raw fingerprints and that fingerprints cant be reconstructed based on the data stored within these systems. General intrusiveness can be another factor affecting user acceptance of some devices, particularly iris and retinal scanning systems. Following are the errors of biometrics base authentication system. False acceptance rate (FAR) False acceptance rate (FAR) is a system error. It is the rate at which an interloper can be recognized as a valid user. In one -to-one match during user verification, false acceptance is based on fake attempts, not on the total number of attempts by valid users. If FAR is 1%, it means one out of 100 users trying to break into the system will be successful [10]. FARs become more critical when you attempt to identify users based on biometrics, instead of simply trying to verify a person with a one-to-one or one-to-few operation False reject rate (FRR) False reject rate (FRR) is another type of error of biometrics system. It is the rate at which a valid user is rejected from the system. Consider a finger print recognition system; unfortunately, the conditions under which the original sample was collected can never be exactly duplicated when the user submits subsequence biometrics information to be compared. False reject rate may occur due to following variations. Rotation and Translation because of different positioning of the finger on the finger print device. Downward pressure on the surface of the input device which changes the scale of input device. Non-permanent or semi-permanent distortions like skin disease, scars, sweat, etc To over come FRR it is essential that all biometrics base authentication systems have a threshold value in order to allow for minor differences. With out threshold value FRR occurs and valid users will be probably rejected by system. If the threshold value is too high FAR occur [9]. It is there for necessary to find a proper threshold value. Organisational environments As stated it is important to consider the organisational environment when selecting biometrics base authentication system. Users with wet, dirty or dry hand have experienced problems with finger and palm recognition system. People using gloves generally cant use these systems. Face recognition system cant be easily be used in medical environments where hood and masks are used by users. Cost The direct cost of the system (hardware and software) is the initial considerations. Due to the improvement of features and functionality the over all cost of biometrics system reduces. It not only reduces fraud and eliminating problems associated with stolen or forgotten passwords but also reduces the help desk role. Summary The subject of this chapter is biometrics, which is defined as a method of verifying an individuals identity based on measurement of the individuals physical feature(s) or repeatable action(s) where those features and/or actions are both unique to that individual and measurable. A biometrics system which consists of enrolment mode and authentication mode, unique physiological characteristics or behavioural mannerisms are examined in biometrics verification for an individuals identity. All biometric systems essentially operate in a similar way in a four-stage process that is automated and computerized which are Capture, Extraction, Comparison and Match/non-match. Biometrics system one-to-one is based on one to one matching and authentication principles and is mainly used for verification purposes, while biometrics system one to many works on the principles of one-to-many recognition and is used for identification. Multimodal biometrics base identification system is used to over come the limitation of the signal identifier biometrics base identification system in which different biometrics base identification system such as face recognition, finger print verification and vice verification, is integrated and worked as a single biometrics base identification system. Methodologies of Biometrics Authentication An overview As stated, different biometric systems are use in different organisations according to their requirements. The most common biometrics system in use today includes fingerprint recognition, iris recognition, and voice recognition and face recognition systems. There are also other biometric systems available like retina recognition, vein pattern recognition, signature and DNA matching systems. These systems are not as widely used yet for various reasons. These biometrics systems can be integrated into any application that requires security, access control and identification or verification of people. With biometric security we can dispense with the key, the password and the PIN code; the access-enabler is a person, not something person know or something in his /her possession. Biometrics systems secured resources are based on who a person is. Biometrics systems also minimise the risk that is associated with less advanced technologies while at the same time offering a higher level of security and convenience. Fingerprint Recognition System Fingerprints are one of the human physiological characteristics that do not change throughout someones life. Even identical twins have different fingerprint patterns. The chance of identical twins to have the same fingerprint is less than one in a billion. Fingerprint recognition is generally considered the most practical system for its reliability, non-intrusive interfaces, and cost-effectiveness. In recent years, fingerprints have rallied significant support as the biometric technology that will probably be most widely used in the future. In addition to general security and access control applications, fingerprint verifiers are installed at different organisations such as, defence/military organisations health care, banking and finance, application services providers, immigration, law enforcement etc. The fingerprints strength is its acceptance, convenience and reliability. It takes little time and effort for somebody using a fingerprint identification device to have his or her fingerprint scanned. Studies have also found that using fingerprints as an identification source is the least intrusive of all biometric techniques. [15] Verification of fingerprints is also fast and reliable. Users experience fewer errors in matching when they use fingerprints versus many other biometric methods. In addition, a fingerprint identification device can require very little space on a desktop or in a machine. Several companies have produced capture units smaller than a deck of cards. One of the biggest fears of fingerprint technology is the theft of fingerprints. Skeptics point out that latent or residual prints left on the glass of a fingerprint scanner may be copied. However, a good fingerprint identification device only detects live fingers and will not acknowledge fingerprint copies. [12] Main Feature of Finger print verification system Analysis of minutia points i.e. finger image ridge (verification) endings, bifurcations or branches made by ridges. One of the most commercially successful biometric technologies. Important for applications where it is necessary to verify the identity of those who gain access. How fingerprint recognition system works In biometrics systems fingerprint recognition system is the fastest verification /identification (One-to-One / One-to-Many) system as shown in figure 3, 4, 5. Like other biometrics recognition systems it performs fingerprint recognition with the help of specialised hardware. This specialised hardware is supported by the conventional computer hardware and special software. All biometrics systems operate in two modes, enrolment mode and authentication mode (as discussed in the previous chapter). A sample of the fingerprint of a live person is provided to the system which is then converted into mathematical code (Template) and stored for the enrolee into the database. In the first step of the authentication process, a fingerprint impression is provided to the system. The system takes a digital image (input image figure 3:1:1 below) using different techniques including scanner, optical, and ultrasound or semiconductor chip technologies. The digital image of the fingerprint includes several unique features in terms of ridge bifurcations and ridge endings, collectively referred to as minutiae. [22] In the next step the system uses an automatic feature extraction algorithm to locate these features in the fingerprint image, as shown in Figure 3:1:2. Each of these features is commonly represented by its location (x, y, and z) and the ridge direction at that location; however the feature extraction stage may miss some minutiae and may generate spurious minutiae due to sensor noise and other variability in the imaging process. The elasticity of the human skin also affects the feature extraction process. [33] In the final stage, a final decision of match and non match is made on the bases of similarity between the two sets of features after compensating for the rotation, conversion and dimension. This similarity is often expressed as a score. A decision threshold is first selected. If the score is below the threshold, the fingerprints are determined not to match; if the score is above the threshold, a correct match is declared an authentication is granted to the person. Iris and Retina Recognition System Biometrics which analyse the intricate and unique characteristics of the eye can be divided into two different fields, Iris and Retina. Iris and retinal scans both deal with the human eye. They are done in an extremely different way as compared to other biometrics technology. Iris Recogniton System Iris recognition biometrics base authentication systems have unique characteristics and features of the human iris used to verify the identity of an individual. The iris is the area of the eye where the pigmented or colour circle, usually brown or blue, rings the dark pupil of the eye. It consists of over 400 unique distinguishing characteristics that can be quantified and used for an individual identity. However, only about 260 of those characteristics are captured in a live iris identification process [25]. Iris are composed before birth and, except in the event of an injury to the eyeball, remain unchanged throughout an individuals lifetime. Eyeglasses and contact lenses present no problems to the quality of the image and the iris recognition /scan systems test for a live eye by checking for the normal continuous fluctuation in the pupil size. As Iris patterns are extremely complex and unique they carry an astonishing amount of information. The fact that an individuals right and l eft eye are different and that patterns are easy to capture, it establishes iris recognition

Importance Of Note Taking In Colleges Education Essay

IntroductionNote-taking is a really of import larning tool in college schoolroom. Boyd ( 2004 ) found that pupils who take notes perform better on tests than pupils who merely highlight text. Most teachers besides wonder whether supplying press releases to pupils is truly utile for pupils or non. A study by Isaacs in 1994 shows that 43 % of academic staff frequently or ever use press releases in the schoolroom, and they feel that press releases help pupils to take notes and let them to listen and take part more in talk. The issue of note taking makes college professors use presentation package, such as Microsoft PowerPoint and its related press releases. Although Microsoft PowerPoint is more popular in colleges, it besides has negative impact on instruction and acquisition. For case, Tufte ( 2003 ) argues that PowerPoint and other presentation package have reduced the quality of presentations and represent hapless teaching method. This paper presents two surveies which determine if supplementing Microsoft PowerPoint lectures with press releases of the slides improve test-taking public presentation in an undergraduate homo development class. In the first survey, it was expected that pupils who received the press releases would execute significantly better on tests than pupils who did non. Students were surveyed about their usage of the PowerPoint press releases and perceptual experiences of the grade to which the notes helped with exam public presentation. The 2nd survey assessed the acquisition manners of pupils in order to find whether the acquisition manners with PowerPoint presentation press releases may impact pupil larning results. It looked at the three acquisition manners: lingual, visual-spatial, and bodily-kinesthetic.MethodFor the first survey in the autumn semester, pupils in two subdivisions of an upper degree Human Development class at a little Midwestern university participated in the current survey. Each subdivision had 50 pupils who were demographically similar across subdivisions. In the autumn semester, the class was divided into tierces, with an test given at the terminal of each 3rd. Students were required to take one of the first two noncumulative tests, but the lower class of the two was non computed into the concluding class. The concluding cumulative test was required of all pupils. At the beginning of category, Section 1 pupils were given hard-copy press releases to attach to the Power Point lectures for the 2nd test and the concluding ; they were instructed non to demo these press releases to pupils from Section 2. Section 2 pupils were given the press releases for the concluding tierce of the semester merely. In the spring survey, the process of the survey was similar to the autumn semester. However, pupils in both subdivisions were asked to look into as many points in the checklist of Multiple Intelligences Inventory for grownups ( Harper, 2005 ; Lazear, 1991 ) , wh ich characterized the ways they learned stuff.ConsequencesFor both surveies, there were no important differences between the two subdivisions on the trial scores with the usage of the PowerPoint press releases. As clearly seen, the average test mark of the pupils given PowerPoint press releases is rather similar to the average test mark of the pupils without PowerPoint press releases.Survey Results and Qualitative AnalysesResponses to the study show most pupils ( 79 % ) used the notes for analyzing for the concluding, 21 % were really attentive to the PowerPoint projections along with the notes, 25 % indicated that they had paid a batch of attending to the talk along with the press releases, and 39 % often wrote extra notes on the press releases. Similar to the autumn semester survey, the spring semester pupils were for the most portion rather positive about having the press releases, as 75 % indicated that the press releases were by and large helpful, 75 % felt that they were utile in fixing for trials, and 50 % indicated that the press releases improved their hearing to the talks.DiscussionSome findings show that the function of presentation press releases is truly utile for pupils to heighten the trial public presentation, but some do non. Although the findings seem to be strong, many factors to measure the usage of this instruction technique. One factor is class content which may act upon the acquisition results in categories utilizing PowerPoint. Another is that the consequence that PowerPoint slides has on larning results is non matched by studentsaa‚Â ¬a„? intuitive beliefs. Finally, the format of press releases does non supply complete sets of notes for pupils. Future research should analyze such teacher effects in the usage of PowerPoint press releases, every bit good as whether PowerPoint slides may be more effectual for certain class content and non others. In some respects, the usage of presentation package in the college schoolroom is one of those old contentions encased in new technological wrapper. Yet, it forces those of us who are actively involved in bettering instruction and acquisition in higher instruction to joint our premises and beliefs about what happens in and out of the schoolroom. To that terminal, there decidedly is something to be gained in the continued usage of the package and empirical geographic expedition of its effects.MentionsBoyd, C. H. ( 2004, May ) . Comparison of foregrounding and note-taking during a PowerPoint talk on trial public presentation. Poster session presented at the one-year meeting of the American Psychological Society, Chicago, IL. Harper, W.S. ( 2005 ) . Course stuffs for Plant and Soil Science. Unpublished papers, University of Vermont. Retrieved October 1, 2005 from hypertext transfer protocol: //pss.uvm.edu/pss162/learning_styles.html Isaacs, G. ( 1994 ) . Lecturing patterns and note-taking intents. Surveies in Higher Education, 19, 203-217. Lazear, D. ( 1991 ) . Seven ways of cognizing. Teaching for Multiple Intelligences ( 2nd edition ) . Palatine, IL: Skylight Publication. Noppe, I. , Achterberg, J. , Duquaine, L. , Huebbe, M. & A ; Williams, C. ( 2007 ) . PowerPoint presentation press releases and college pupil larning results [ Electronic version ] . International Journal for the Scholarship of Teaching and Learning, 1 ( 1 ) . From hypertext transfer protocol: //www.georgiasouthern.edu/ijsotl Tufte, E. R. ( 2003 ) . The Cognitive Style of PowerPoint. Cheshire, Connecticut: Artworks Press LLC.IntroductionNote-taking is a really of import larning tool in college schoolroom. Boyd ( 2004 ) found that pupils who take notes perform better on tests than pupils who merely highlight text. Most teachers besides wonder whether supplying press releases to pupils is truly utile for pupils or non. A study by Isaacs in 1994 shows that 43 % of academic staff frequently or ever use press releases in the schoolroom, and they feel that press releases help pupils to take notes and let them to listen and take part more in talk. The issue of note taking makes college professors use presentation package, such as Microsoft PowerPoint and its related press releases. Although Microsoft PowerPoint is more popular in colleges, it besides has negative impact on instruction and acquisition. For case, Tufte ( 2003 ) argues that PowerPoint and other presentation package have reduced the quality of presentations and represent hapless teaching method. This paper presents two surveies which dete rmine if supplementing Microsoft PowerPoint lectures with press releases of the slides improve test-taking public presentation in an undergraduate homo development class. In the first survey, it was expected that pupils who received the press releases would execute significantly better on tests than pupils who did non. Students were surveyed about their usage of the PowerPoint press releases and perceptual experiences of the grade to which the notes helped with exam public presentation. The 2nd survey assessed the acquisition manners of pupils in order to find whether the acquisition manners with PowerPoint presentation press releases may impact pupil larning results. It looked at the three acquisition manners: lingual, visual-spatial, and bodily-kinesthetic.MethodFor the first survey in the autumn semester, pupils in two subdivisions of an upper degree Human Development class at a little Midwestern university participated in the current survey. Each subdivision had 50 pupils who were demographically similar across subdivisions. In the autumn semester, the class was divided into tierces, with an test given at the terminal of each 3rd. Students were required to take one of the first two noncumulative tests, but the lower class of the two was non computed into the concluding class. The concluding cumulative test was required of all pupils. At the beginning of category, Section 1 pupils were given hard-copy press releases to attach to the Power Point lectures for the 2nd test and the concluding ; they were instructed non to demo these press releases to pupils from Section 2. Section 2 pupils were given the press releases for the concluding tierce of the semester merely. In the spring survey, the process of the survey was similar to the autumn semester. However, pupils in both subdivisions were allowed to look into as many points in the checklist of Multiple Intelligences Inventory for grownups ( Harper, 2005 ; Lazear, 1991 ) , which characterized the ways they learned stuff.ConsequencesFor both surveies, there were no important differences on the trial scores with the usage of the PowerPoint press releases. Table 1 shows the average test tonss for two subdivisions of the class. As clearly seen, the average test mark of the pupils given PowerPoint press releases is rather similar to the average test mark of the pupils without PowerPoint press releases.Survey Results and Qualitative AnalysesResponses to the study show most pupils ( 79 % ) used the notes for analyzing for the concluding, 21 % were really attentive to the PowerPoint projections along with the notes, 25 % indicated that they had paid a batch of attending to the talk along with the press releases, and 39 % often wrote extra notes on the press releases. Similar to the autumn semester survey, the spring semester pupils were for the most portion rather positive about having the press releases, as 75 % indicated that the press releases were by and large helpful, 75 % felt that they were utile in fixing for trials, and 50 % indicated that the press releases improved their hearing to the talks.DiscussionSome findings show that the function of presentation press releases is truly utile for pupils to heighten the trial public presentation, but some do non. Although the findings seem to be strong, many factors to measure the usage of this instruction technique. One factor is class content which may act upon the acquisition results in categories utilizing PowerPoint. Another is that the consequence that PowerPoint slides has on larning results is non matched by studentsaa‚Â ¬a„? intuitive beliefs. Finally, the format of press releases does non supply complete sets of notes for pupils. Future research should analyze such teacher effects in the usage of PowerPoint press releases, every bit good as whether PowerPoint slides may be more effectual for certain class content and non others. In some respects, the usage of pres entation package in the college schoolroom is one of those old contentions encased in new technological wrapper. Yet, it forces those of us who are actively involved in bettering instruction and acquisition in higher instruction to joint our premises and beliefs about what happens in and out of the schoolroom. To that terminal, there decidedly is something to be gained in the continued usage of the package and empirical geographic expedition of its effects.

The Death Of Bruno, Gretel - 1510 Words

[1963] 20 years, 7306 days, 175344 hours, since the death of Bruno. 1943, a year of tumultuous occurrences. Twenty years on, as the only living descendant of the Hoess’s family, Gretel has led a new life. Preceding the death of Bruno, Gretel’s mother, Elsa, had been diagnosed by a mental disorder, leading to her suicide. The heartache of the loss of her only boy, had been too overwhelming, for she had taken her own life. After the conclusion of the war, Ralph was held detained, and later hung. Period, Gretel is a married school teacher, living in Berlin. From a youthful supporter of Nazi Germany, Gretel is now an advocate for the learning and growing of young children. The death of her innocent brother has influenced her, leading to the creation a better human. Despite her ambitions, her husband and son remain unaware of her horrific childhood. Gretel constantly recollects the memories of her youth, as the presence of Bruno lingers through the Berlin. 18 years, 6574 days, 157776 hours, since the end of the war. Towering to short. Deformed to straight. Trees, forcefully sway as they grasp for balance. Destructive winds gush through frail branches, leaving many withered. Light rays light the vicinity, obscuring the notorious battle between nature. No mercy. No clemency. No lenience. Nature overthrown, the pitter-patter of student’s footsteps resonate against the concrete. Chuckling children. Troding feet. Flying arms. â€Å"Vrrrooom! Neeewwww!†. Boys dodge their wayShow MoreRelatedThe Boy In The Striped Pyjamas Analysis793 Words   |  4 Pagesperspective of a young boy named Bruno. Bruno the main protagonist is portrayed as being as being unaware of the atrocities of war. This is shown many times throughout the text. However, it is Bruno’s interactions with other key characters that makes his innocence obvious to the reader. In particular, his innocent perspective regarding the Nazi concentration camp, as wel l as, his interactions with his father and Shmuel reveal his lack of awareness. Bruno and concentration camp/Gretel: Innocence is obviousRead MoreThe Boy in the Striped Pyjamas1685 Words   |  7 Pagesrespect and equal to themselves. Gretel is Bruno’s sister in the novel. Not only is she a female and has no power, but is also a child. Gretel tries to fit in by following the war movements and by becoming prejudice against the Jewish race and believing that Germans are far more superior. ‘Gretel stayed in her room concentrating on the various maps she had pasted on the walls and consulting the newspapers’ (Page 188). This is a passage taken showing that Gretel is trying her hardest to keep upRead MoreThe Striped Pajamas By John Boyne Essay1213 Words   |  5 Pagesenjoyed is The Boy in the Striped Pajamas. The book is about the friendship of two nine-year-old boys, Shmuel, who is Jewish, and Bruno, a German, that share the same birthday in 1940s Nazi Germany. In this paper, I will talk about what this Holocaust genre novel is about and the symbolism that is latent in this documented horror, seen through a child’s eyes. In the book, Bruno is upset when he finds out that his family is moving from the fancy life in Berlin to a place in the countryside called AuschwitzRead MoreThe Boy in the Striped Pajamas Quiz693 Words   |  3 Pagespaper for writing answers. 1. Why are Bruno (Asa Butterfield) and Shmuel (Jack) drawn to each other, despite their opposing circumstances? Bruno and Shmuel are drawn to each other simply because they are two kids of similar age that don’t have any friends where they reside. Despite their â€Å"political† differences, they were able to relate to one another by playing games and just getting a sense of each other’s daily lives and activities 2. Gretel (Amber Beattie) believes Father (David Thewlis)Read MoreThe Book Thief And The Boy In The Striped Pajamas : Book Analysis1982 Words   |  8 PagesThe Boy in the Striped Pajamas, childhood innocence in times of war is very evident in Rudy from The Book Thief, and Bruno from The Boy in the Striped Pajamas. Though childhood innocence can be endearing, in these books it leads to their death. With both Rudy and Bruno their innocence keeps them from understanding the war. Rudy risks his life, without knowing, to save Liesel and Bruno hails Hitler, with the understanding it is just a way to say goodbye. Not only do they not understand the war, theyRead MoreCharacter Development In Boy In The Striped Pajamas1149 Words   |  5 PagesShmuel’s father disappears and you offer to come into the camp to help look for him. When searching in the barracks, things take an unpleasant turn when the soldiers force out all the Jews to go take a â€Å"shower†. Boy in the Striped Pajamas focuses on Bruno an eight-year-old boy and is described as a drama and historical fiction set during World War II when Germany was under the control of the Nazi regime. The movie is because the character development, realistic portrayal of the treatment of Jews, andRead MoreMaking Unexpected Friends in The Boy with the Striped Pajamas918 Words   |  4 PagesTHE BOY IN THE STRIPED PAJAMAS The main characters in this story have different personalities and they represent the good and the bad in human beings. Bruno, the nine years old German boy, was an adventurous, curious and innocent boy like many other kids his age. Because of his age sometimes he was a little naive but overall I think he was a very smart boy. He showed us the importance of friendship and compassion after he met Shmuel at the concentration camp. Shmuel, the Jewish boyRead MoreSummary Of The Boy s Striped Pyjamas 1269 Words   |  6 PagesStriped Pyjamas by John Boyne The Boy in Striped Pyjamas is a book written by John Boyne set during World War II. He is an author of 8 novels including this story. His novels are published into 42 languages. The story mostly told through Bruno s eyes, but also was allowed to freely move into other characters thoughts. It is told from third point of view. The book is focused on Shmuel and Bruno’s friendship. This book talks about Nazi and concentration camps and has sold more than 5 millionRead MoreThe Boy in Striped Pyjamas - Research2337 Words   |  10 Pagesbestseller list, as well as in the UK, Ireland, Australia and many other countries. Characters Bruno Hoess: Bruno is the nine-year-old son of a Nazi Commandant. He was born on April 15th, 1934 in Berlin, Germany and has a sister named Gretel. Bruno has brown hair and is constantly made fun of because he is short for his age. He loves exploring and wants to be an explorer when he grows up. Bruno is very upset when his family moves to a place called â€Å"Out-With† because he has no friends there. HeRead MoreStory of Friendship and Hate in The Boy in the Striped Pajamas827 Words   |  4 Pagesbut one of the main characters were Bruno , an eight year old boy who loved to play and explore. Bruno had a large mind and he didnt like boring or dull things. He like excitement and adventure. You could tell Bruno was also a very curious boy because he saw the concentration camps from his window and thought it was a farm. So he asked his parents about it and they would not give him any detail so he went on an adventure to find out what it really was. Bruno was a very interesting character too

What Is the Psychological Makeup for Human Factors

One component of human factors (or ergonomics, the scientific study of interactions between mankind) is a humans psychological makeup. Human factors practitioners  primary concern is evaluating a humans behavior, especially if it is predictable. Therefore, they break human psychological makeup into two main psychological elements of interests: the physical and the behavioral.   The Physical The psychology of physical sensing and perceiving deals with how the brain interprets signals from the bodys sensory inputs found on the skin, nose, ears, tongue, and eyes.   Feeling.  Humans have cells that can pick up on pressure differences along their skin — this is how they feel — via two types of touch sensors. One sensor type picks up a general touch over a large area, such as those on the heel of a hand, while the other is more concentrated and refined and picks up minute changes in edges, such as sensors in the fingertips. Hearing. Humans have a complicated series of devices in the ear that can take changes in the pressure of the air and send it to the brain as a signal that it interprets as sound. Several areas of the brain handle this processing. Smelling. The human nose is amazingly sensitive and not only can detect scents but can also signal if there are dangerous — or attractive things — around. Tasting. The human tongue is a wondrous muscle studded with receptors that can pick up different chemical elements and translate them into distinct taste elements, typically categorized as salty, sweet, bitter, sour, or  umami (savory).   Seeing.  The functionality of the human eye is almost magical. Specialized cells pick up three distinct colors, light intensity, and edge definitions and interpret those signals into the images perceived by mankind, providing a rainbow of colors and depth. The one commonality between all these sensory perceptions that is of vital importance to human factors is that they are all stimulated by physical means. These physical means make up part of the human-machine interface  and even the human-environment interface. Understanding what role they play and how they can affect both human performance  and behavior are important when analyzing those human factors. The Behavioral The behavioral aspect of a persons or populations psychological makeup relates to the elements that motivate actions or cause reactions. Therefore, how a human acts and why is an important data point. Human behavior underlies almost everything from economics to politics. In fact, economics is really about studying how people react to incentives and politics is about how people react to campaign speeches. In ergonomics, scientists try to make things as efficient — or oftentimes comfortable and easy to use — as possible so that the human behavior data can be utilized to design a device or system for human consumption wherein the subject is motivated to use it for the desired outcome.   This often begs the question, What about making sure the human doesnt get hurt through the work? which falls under the category of motivational and reactive behaviors, studied by ergonomists. If it causes stress or injury, repetitive or otherwise, predictable human behavior tells ergonomists that people wont want to do it, and if they do, they will not be operating at their maximum human performance level and will not be efficient. Therefore, any proposal made by an ergonomist typically will preclude any harmful suggestions (as humans naturally select to avoid these). The Culture of Behavior The cultural aspect of the psychological makeup of a group of people can be part of the behavioral aspect, but it can also affect a persons cognitive capability. From a behavioral position, culture plays an important part in understanding what motivates an individual and how they react to certain stimuli.   Simple things such as language can cause extremely different reactions. For instance, the differences between Mexican and American cultures can greatly affect their levels of interest in a certain issue or item. Take the case of the Chevy Nova, a popular car in America that tried to sell internationally to the population of Mexico. When Chevy attempted to market the car, they failed to realize that No Va was Spanish for No Go. The car did not sell well.   Another such example is that in America, curling your pointer finger towards you is a common hand signal for come here. In some Middle Eastern and African cultures, however, that gesture is exclusively reserved to call a dog and is seen as insulting when used towards a person. Conversely, in some European cultures biting a thumb is seen as a vulgar insult while in America it has no known meaning.   On the cognitive side of these aspects, ergonomists deal with differences in the cultural lexicon. As humans grow up, they learn things they may not realize, inherently, from culture — certain things mean certain things. These become part of their instinctual understanding of the world. But not everything is universal. Color psychology is a prime example of something that can possess different meaning across cultures. Even though color theory has some universal elements as to how color is interpreted, what those interpretations are defined as may differ. So where green may represent good fortune in one culture, blue may imply that in another. Shapes, patterns and how things are organized (to name a few) can imply greatly different meanings across cultures. Some cultures even affect a persons body mechanics dictating that a certain posture or walking style is preferred.