Ethics and the ASCE Report Card for Americas Infrastructure Assignment

Ethics and the ASCE Report Card for Americas Infrastructure - Assignment Example This is compounded with infringement into the local cultures while executing construction projects (McAnally 75). Another critical ethical concern is failure of imported technology to conform to socio-economic policies of the local industries. This pertains particularly to international regulations on patents which suppress the progressive socio-economic strategy of developing economies. Competitive strategies of civil engineering firms to adopt common language and use the same in foreign assignments have a significant ethical drawback. This has to do with foreign engineering using their language which may not be effective to the locals and the consequence is skewed decision making. For instance, Civil engineers from firms that use English as common language are likely to dominate project evaluation and monitoring process and make the locals to shy aware hence limiting participatory decision making as far as the interests of the local community is concerned. This has led to environme ntal degradation, disregard of cultural norms which amounts to unethical consequences of globalization in civil engineering. ASCE maintains transparency and accountability of the engineers in various locations of their assignments. Since one of the ethical codes is to serve humanity, involvement of the local community in foreign assignment is facilitated through use of interpreters and participatory decision making which must incorporate input of local community. Another approach towards remedying this problem by ASCE code of ethics emphasizes involvement of the local engineers to link the foreigners with the host community (McAnally 77). However, it is worth to note that ASCE code of ethics has standardized rules on projects execution procedures which at times clash with the local legal framework. United States is considered the powerhouse of ultra-modern technology and offers the best civil engineering

Enterprise 2.0 (blogs) Assignment Example | Topics and Well Written Essays - 500 words

Enterprise 2.0 (blogs) - Assignment Example PricewaterhouseCoopers uses media sharing sites and social networks as part of its operations processes. The global adoption of these media has a direct impact on customers, employees, investors and stakeholders. In web 2.0, customers and stakeholders create their own versions of the firm. Web 2.0 also helps the firm to improve and protect its stakeholder’s values. PricewaterhouseCoopers uses blogs and wikis as a business strategy. This means that Web 2.0 is used to enhance the brand reputation of the firm. It is also used as a platform for communicating with markets. Internally, Web 2.0 provides competitive advantages through the engagement of employees in the process of generating or creating ideas and solving customer problems (Rother, 2010). PricewaterhouseCoopers looks at its top business priorities and evaluates the roles of social media in supporting these goals. This means that Web 2.0 offers innovative ways of building strong relationships with customers and other sta keholders. Web 2.0 offers PricewaterhouseCoopers a platform for enhancing transparency. Rumors and news travel instantly through these social media platforms. They have immediate impacts on the opinions generated by the investment community, regulators and industry analysts. PWC also uses Web 2.0 as a tool for governance (Basole, 2008). The firm’s engagement in social media activities involves numerous risks. The firm uses the platform to identify and assess risks and risk management. PWC is a successful business that has established governance structures, which include procedures and policies that allow flexibility and the setting of parameters that will guide interactions. PWC has taken emerging risk audit to evaluate the implication of social media before an issue or risk occurs. Web 2.0 has the ability to control interactions and resolve issues before they explode to full-scale problems. It has

Human Resources in Action Essay Example | Topics and Well Written Essays - 1250 words

Human Resources in Action - Essay Example rovided by these companies on their websites and will also design a selection process that can be useful in screening applicants for a job description posted by one of the two companies on their website. The Hilton Worldwide website (2014) provides comprehensive details about the career building opportunities that they provide to those willing to join its team, which operates on a global scale for personal and professional growth. Further, there is the job search engine on the website in which interested job seekers can view the career opportunities that are applicable to them. The Hilton site (2014) also gives opportunities to students in universities that are willing to be part of the Hilton family and are also willing to launch their careers in the hospitality industry. Moreover, the Hilton Worldwide site (2014) also gives the areas of talent in which an individual willing to join the Hilton family can choose from when making an application that includes call center, spa and recreation, food & beverage, sales & marketing among a list of many talents. Lastly, the Hilton Worldwide site allows job seekers to create current profiles on the site, which can help them in receiving information in the future about available opportunities in the company that tally with a job seeker’s interest. As compared to Hilton Worldwide website (2014), Harvester restaurant’s website does not provide an array of opportunities for those that would want to be part of their experience because it does not operate on a global scale. The other area of talent that is of interest to this company is that of chefs and kitchen staff in which the restaurant provides full time training for qualified team members. Apprenticeship opportunities are also available in which an individual can grow on both personal and professional in order for the company to benefit in terms of influencing customer experience. Other job roles that are available as indicated on the Harvester website(2014) include

Global Expansion Essay Example | Topics and Well Written Essays - 3000 words

Global Expansion - Essay Example There has been a considerable growth in globalization in the last decade. Trade and investments across borders have increased greatly that has helped shaping the economies of various nations. It has become highly important for organizations to remain transparent, comparable and reliable in terms of providing financial information. Globalization impacts international accounting in terms of the flow of capital. This increases issues relating to harmonizing global standards. Moreover, globalization has helped emerging economies such as, that of India and China, to participate in the global economy. This further increases the flow of capital as economic opportunities are developed. Maintaining adequate accounting records becomes a challenge for most organizations due to the conflicting accounting policies of the different nations and of regulatory authority. The requirement of universally acceptable rules in respect of accounting becomes essential. In general multinational firms follow t he IFRS principles. Considerable efforts are taken by different regulatory authorities to reduce the gap between the IFRS principles and the accounting regulations imposed by different nations and the US GAAP. Research questions are the identification of the main motive behind a research and what a researcher expects to learn from the same. Research questions hep to give direction to the study and helps maintaining a proper structure in the report. The research questions identified for conducting this research are as follows. The research has been conducted on the basis of qualitative studies. The study was conducted by secondary data collection technique. Information was collected from different journals and books for analysing the subject of study. The pattern of analysis followed in this research was largely the case study method. Case study method

Dissenminating Evidence O BESITY IN cHILDREN Essay

Dissenminating Evidence O BESITY IN cHILDREN - Essay Example Decision makers are identified as senior health workers who have the powers of implementation of policies in the health facility. It also includes local government representatives who rationalize ideas generated from research and scientific studies of this nature and make them work (U.S. Department of Health and Human Services, n.d.a). For these decision makers, the strategy to disseminate the information to them is through the use of formal memos or proposals, outlining the key findings of the research and explaining to them why it would be a prudent decision to implement the ideas within the identified setting in a bid to battling obesity in children. The reason for choosing a memo or a formal proposal is that it makes the dissemination more official, making it possible for the issues raised in the memo to be considered at all levels of official or formal decision making meetings. The nursing community is identified to include colleague nurses and other health professionals who work mainly as service providers to patients. Because the battle against obesity in children have been identified to be a collective task that cannot be implemented successfully without the involvement of other nursing officers within the nursing community, the findings and ideas shall be made available to them also. The strategy of dissemination has been targeted to be the use of fliers, which will be made up of summary of the objective of the study, key findings of the study, as well as approaches to tackling obesity in children. Because of the target group involved, which is the nursing community, the researcher shall ensure that the specific roles and duties needed to be played by these nurses will also be clearly outlined on the flier. It is the hope of the researcher that because fliers are very handy and portable, nurses, who are normally busy with patient care can easily carry them in their bags and purse and take them home and use them in their own

A few factors Essay Example for Free

A few factors Essay Investigation A few factors (the gradient/height of ramp, the mass of the object, friction, gravity, the energy act on the object or the length of object) can affect the final speed of an object at the end of the ramp. Planning I am going to do my investigation on mass of the object which I think it is one of the factors that will affect the final speed of an object at the end of the ramp because when gravitational potential energy equals to mass times gravity times height, so if mass is increased, the gravitational potential energy will increase in proportionally. I will do the experiment by adding weights on top of a wooden cart to increase the mass, and then I will time how long it takes to fall down from the ramp and calculate the final speed by: Diagram Weight add to the cart (grams) 0 100 200 300 400 Time (sec) 678 607 721 686 693 Weight add to the cart (grams) 500 600 700 800 900 Time (sec) 719 703 661 677 657 My experiment results are: According to the results, mass does not affect the final speed of an object at the end of the ramp. I think this is because when something is dropped, it will transfer from gravitational potential energy to kenetic energy So I am going to change my investigation on the height of the ramp. I think height of the ramp will affect the final speed of an object when height of the ramp is increased, the gravitational potential energy will increase proportionally due to: G. P. E. = mass x gravity x height Method of doing the experiment I am going to do it by using a ramp that I can increase the height. Then I will release the cart at the top of the ramp and time how long it will take for the cart to come down. I will increase the height by 5cm each time (5cm, 10cm, 15cm, 20cm, 25cm and 30cm). I will take down the time thrice to get the average time of it because it is more reliable. Then I will work out the average speed. I will divide the length of the ramp by the time taken and work out the final speed by doubling the average speed. The length of the ramp is one metre and the weight of the cart is 900 grams. I can make this a fair test by not pushing the cart, doing average on the time, and keeping the mass the same. Apparatus I will need. A clamp to hold the ramp, A ramp, A wooden cart as the object and A stopwatch for timing for the experiment. Safety features I will make sure it is safe by putting books at the end to stop the cart from bumping into others feet and I will make sure no one is standing near it. I will do the whole experiment on the ground because this can stop things from falling down the table and hit peoples feet. Diagram Evidence/results I have my experiment results after all of this and they are: Height(cm) 5 10 15 20 25 30 Average Time(sec) 409 231. 180 154 137 110 According to the results, there seems to be a trend. So, I think I will calculate the final speed. Height(cm) 5 10 15 20 25 30 Final speed(cm/s) 0. 489 0. 865 1. 111 1. 299 1. 46 1. 818 The trend is obvious now. It shows that whenever the height is increased, the time taken will decrease and the final speed of the cart will increase. From we calculate gravitational energy (mass x gravity/acceleration x height), height seems to be one of the main factors that can affect the G. P. E. because as height increases, the G. P. E.will be affected by it. Example: if an object with constant gravity (x), constant mass (y) but falls from changing heights (5 and 10), the outcome will be 5xy and 10xy and this also proved that when the height is increased, the G. P. E. will increase. The forces of gravity pulls down on all objects have on Earth. If objects are allowed to fall, they accelerate downwards. Therefore, if an object is allowed to fall from a higher place, the gravity will pulls down the object with a greater force and the object will accelerate faster as it comes down. If the object falls from a higher place, there will be more time for the object to accelerate, so the final speed of the object will be faster, and as the gravitational force is greater, the object is being pulled harder and quicker. Therefore, this explains why an object will have a faster final speed at the end of the ramp whenever the height of the ramp is increased. At first, I did an experiment on mass of the object that the experiment doesnt work. I have found out that mass doesnt affect the final speed of an object. When an object is held at a certain point, gravitational potential energy is stored; when it is dropped, it will transfer gravitational potential energy to kenetic energy. So that means: Gravitational potential energy = kenetic energy Mass x gravity x height = 0. 5 x mass x velocity This shows that mass exists on both sides of the equation, that means it can be cancel out to simplified the equation. So the equation will become: Gravity x height = 0. 5 x velocity That means mass does not affect the velocity on the right side of the equation. Graph I have also plotted a graph of height against final speed, and after that, I have drawn a line of best fit. The graph shows a straight line of best fit. The graph shows a straight line of best fit and this shows height and final speed are in direct proportion. This proves when the height of the ramp is increased, the final speed is increased and this means the object accelerates faster. Evaluations My results are quite accurate because on the graph, all of the results go very near the best-fit line. My results are quite reliable, as I do every height for three times and take the average of it. I can make the results more accurate by using a light sensor with the computer. This will be more accurate then using a stop watch because human need a time to react before their brain do what it is told to do which is the reaction time. I think my method of doing the experiment is quite good because I can get accurate results from it. I can improve it by putting the ramp more stable and firmer because the ramp keeps on sliding down the slide. I think the method of doing the experiment is quite good because it gives me a quite accurate result and it takes less than half an hour to finish the experiment. At first, I did an experiment on mass of the object that takes about 45 minutes but I got results that are not appropriate for my experiment. So I quickly change the investigation on another topic. Although it wastes lots of time, I learn that mass of an object will not affect the final speed of a falling object.

Steganography Using Lsb Insertion Technique Computer Science Essay

Steganography Using Lsb Insertion Technique Computer Science Essay Steganography is a method used for hiding a message by fixing in a carrier data. There are two types of data. They are internal data and external data .The external information contains visible part or audible part of data which is not useful for data owner and the internal information contains embedded data. The techniques used in Steganography makes hard to detect hidden message within an image file. By this technique we are not only sending a message but also we are hiding the message. Steganography system is designed to encode and decode a secret file embedded in image file with a random Least Significant Bit (LSB) insertion technique. By using this technique the secret data are spread out among the image data in a random manner with the help of a secret key. The key generates pseudorandom numbers and identifies where and in which order hidden message is laid out. Steganography includes cryptography which is an advantage for Steganography .In cryptography, diffusion is applied to secret message.   INTRODUCTION: The Data transmitted comes in many forms and it is used for more than one application. Communications should be done secretly. Secret communication varies from bank transfers, corporate communications and credit card purchase. Steganography is an art of embedding a secret message into a normal message. Steganography is used in watermarking for protecting data copyrights .Unsurprisingly, methods of Steganography change because innocuous spam contents are growing frequently by embedded texts Cryptography is technique used to make secret message scribbled for third party and are normally used in internet. The encrypted message is targeted by attackers in cryptography because it hides the message content. An another data hiding technique known as watermarking used for embedding and hiding, some symbol data or digital manifest in the digital valuable data like photo picture, digital movie, musical sound etc. Watermarking purpose is mainly used to protect ownership or copyrights of the data. In this technique, hardness of embedded evidence and hidden evidence are very small and is important. In this technique the important information is present in external information which is visible or audible. In the Steganography technique, confidential information is made invisible to a human eye by embedding it as a dummy data such as a speech sound and a digital image. Steganography contains another research topic called as steganalysis which is used to find a stego file from the available files. Steganalysis is used in detecting suspicious image file. The suspicious image files are embedded with the crime associated information All traditional Steganography techniques have limited information-hiding capacity. These techniques can hide 10% or less than 10% data of a carrier data. The principle of these techniques is to replace frequency components of carrier or to replace LSB bits of multivalued image with secret information. Steganography uses image as a carrier data and it embeds secret information in bit planes .We can replace all noise like regions in the bit planes without disturbing the quality of image and is termed as B.P.C.S Steganography .BPCS Steganography is known as Bit plane complexity segmentation Steganography. BACKGROUND HISTORY: Steganography is derived from a Greek word which means as a covered writing or hidden writing. In Steganography stegos means cover and grafia means writing. THEORY: Steganography is used to hide confidential information from human eyes by embedding it in a carrier data such as digital image or speech sound. A carrier data is a color image having RGB color components in a multi-bit data structure. The embedded information is extracted using special extracting program and key .The techniques of Steganography are different from file camouflage or file deception technique. File deception is a technique used for hiding secret data in computer file and it almost looks like a Steganography. But, it is an trick to disguise a secret-data file as a normal file and is possible in files which have dont care option. For example, Word file or JPEG image OR MPEG will allow for adding an extra data (extension) at the end of a regular file. Even an extra data (which can be encrypted) are added, the JPEG image, word file or MPEG looks like the original image and original sound, or document on the computer. People may think this is due to Steganography. The lengthy files are easily detected by engineers. So, file deception and Steganography are different. The Steganography softwares that are available in the market are based on file deception. In Steganography, if output file size is increased by embedding the information then the program is called as File deception. A secret data can be made unreadable by encrypting the data. The secret data should be encrypted to make it unreadable for third party. With the help of data encryption, secret data can be safe. Data encryption is based on data scrambling and it uses a secret key. Data encryption can create a doubt to the people that owner of the data is hiding something in an image. In data encryption we can find easily that he is hiding something in a image. Therefore encryption of data is not enough. Steganography is the solution for data encryption. There are two types of data in Steganography .they are secret data and carrier data. Secret data is very valuable when compared to the carrier data. Carrier data is a type of dummy data which is not so important but it is needed. The data which is embedded is called as stego data.If we want to recover the secret data , we can extract that data from stego data.We need a special program or a key for data extraction.. The carrier is image data which has color components of red green and blue colors in 24 bit pixel structure. The figure below shows an example of carrier image and stego image. The secret data is embedded in stego image. Steganography is a method of hiding the secret data by fixing it in media data .For example in the figure a secret data is embedded but we cant find in which place the secret data is embedded. The Embedded data will be very safe in the Steganography because it will hide content of the message and location of hidden image. There are many methods to embed the data .but; it is very hard to find about the method used in embedding the message.. Steganography can co-operate with cryptography to embed the encrypted data safely. In Steganography , Stego data will not have any evidence about the embedded data. The Steganography user should discard the original carrier data after embedding such that it will not allow comparison of stego and original data. Embedded capacity should be larger. BPCS method is the method available method for image Steganography. If anyone detect the Steganography image, it is very difficult for him to retrieve the hidden image. There are three basic ways to hide a message in image. They are Injection, substitution and generation. Using Injection method we can find in which place data to be inserted and using substitution we can find least significant bits for hiding the message. Using generation method we can create a new file based on the hidden information. Method of implementation: Least significant bit insertion is one of the important methods of implementation. In this method, the LSB bits of byte are altered so that it form bit string and represents an embedded file. By changing the LSB bits, it will cause some small differences in color which are not noticeable to human eye. After that an image is compressed and a text message is hidden in image .In LSB method, LSB bits of the covered image is altered such that they form embedded information. Embedding a message into cover image will result a stego image. For normal vision, stego image looks identical as cover image; this is because of only small changes of pixel values. Therefore there is no significant difference. The embedded message is sequentially embedded in covered image so that it is easy for a third party to recover the message by retrieving the pixels sequentially starting from the first pixel of the image. Steganography uses a key which as a better security. It is difficult to recover the embedde d image without valid key. LEAST SIGNIFICANT BIT INSERTION Least significant bit insertion is the common technique used in Steganography. In LSB method, an image is used. An image is more than strings and string of bytes. Each byte in an image represents different colors. The last few bits in a color byte do not hold much significance as the first few bits. Therefore only two bits differ in last few bits that represent a color which is undistinguishable to human eyes. In LSB method, least significant bits of a cover image are altered such that we can embed information. The example shows how letter A is hidden in first 8 bytes of 3 pixels in a 24 bit image. Since the 8 bit letter A requires only 8 bytes to hide it, ninth byte of the 3 pixels used to hide the next character of the hidden message. Example shows that in a 24 bit image, letter A can be hidden in first 8 bytes of 3 pixels Pixels: (00100111 11101001 11001000) (00100111 11001000 11101001) (11001000 00100111 11101001) A: 01000010 Result: (00100110  11101001 11001000) (00100110  11001000 11101000) (11001001  00100110  11101001) The five underlined bits are the 5 bits which were altered. With LSB insertion technique, on an average half of the bits of an image are changed. A is a 8 bit letter and requires 8 bytes for hiding. The ninth byte of 3 pixels is used for hiding next character of secret message. The slight variations of this technique allows a message to embed into two or more least significant bits per bytes, and increases the information hidden capacity of the cover object .but cover object is degraded and easily detectable.LSB insertion is easy to implement and is also easily attacked if the modifications are done wrongly. Improper modifications in color palette and simple image calculations will destroy hidden message. Image resizing and image cropping are some examples of image manipulations. Applications of Steganography: Steganography is applicable the following areas. 1).Private communication and secret data storing. 2).Security of data. 3).Accessing the control system for distributing the digital content 4).Media data base systems. The application area of Steganography differs based on the features utilized in a system. 1).Private communication and secret data storing: The secrecy of embedded data is important in this area. Steganography provides capacity for hiding the existence of secret data and Steganography makes very hard to detect the embedded data in a image and Steganography strengthens the encrypted data. In Steganography, select a carrier data according to the size of embedded data. Carrier data should not be effective. Now embed the secret data using an embedding program with the help of a key. To recover the embedded data, an extracting program is used with a key. Before starting the communication in this case, Key negotiation is used 2).Security for a data: Steganography is used in military applications for maintaining the secret data .In military secret information should be very secure to avoid sudden attacks on them from enemies. Steganography can hide the existence of contents of data but it cannot hide the presence of data. Data should not be larger than carrier image .Steganography strengthens the secrecy of the data. Fragility of the embedded data is advantage for this application area. Embedded data can be rather fragile than robust. But embedded data is fragile in most of the Steganography programs. No one can change or tampered the data .If anyone changes or tampers the data, and then it can be easily detected by the extraction program. 3). Accessing the control system for distributing the digital content : In this application, embedded data is explained to publicize the content. Here embedded data is hidden data. Digital contents are being commonly distributed by internet. Some music companies release the music for free in some web sites and in some sites it charges for the music downloads. Digital contents are equally distributed to user who accesses the web pages. Even it is possible to send digital content to e-mail messages it takes more time. We can to upload any content on the web page; we can issue a special access key to extract the content. In Steganography a prototype of an access control system is developed for distributing the digital content through internet. This can be explained by following steps. 1).The content owner will classify his digital content in a folder and embeds the folder according to Steganography method by accessing the folder access key and uploads embedded content on web page. 2).On the web page, owner will explains the contents clearly and publicises it worldwide and gives his contact information on web page. 3).The owner will receive access request from the customer who visited that web page. Then owner creates an access key and provides it to the customer for free or charge. 4).Media database systems: In this type of application secrecy of data is not important, converting two types of data into one data is important. Photos, Pictures, movies and music will come under media data. For example the media data for a photograph will contain about the title of the photo and date and time of a photo and it also contain about the camera used to take that photograph. à £Ã¢â€š ¬Ã¢â€š ¬ Data hiding in .bmp images: There are several formats exists for an digital image. .BMP, JPG, GIF are some formats .Each format is associated with advantage and disadvantages. Because of its simplicity, windows BMP file offers more advantages. It has an advantage of widely spreader and the information contained is minimum .Bmp file is a binary file.bmp file is divided into four sections such as file header, image header, color table and pixel data. The file header is used to know about size of the image and to learn where actual image data is located within the file. The Image header gives information about the image and its data format such as width and height of the image. Image header also gives information such as how many bits are used per pixel and checks whether the image data is compressed data or uncompressed data. Depending on the image data, color table will be present. When color table is not present, a set of bit masks are used to extract the color information from the image data. When dealing with 24-bit image, color table is not present. When dealing with 8-bit image, color table consists of 256 entries. Each entry consists of four bytes of data. In these four bytes of data, first three bytes are blue, green and red colors values .The fourth byte must be equal to zero because it is not used. In 8-bit format, each pixel is represented by single byte of the data which is index in to color table. In 24-bit format, each pixel I represented by RGB component values .The pixel data holds entire hidden data and there are changes by one pixel value either positive or negative. MATLAB: The MATLAB is a language for technical computing. MATLAB integrates computation, visualization and programming in a easy way in which problems and solutions are expresses in mathematical notation. Typical uses include Math and computation Data acquisition Algorithm development Modelling, simulation and protyping Data analysis, exploration and visualization Application development MATLAB is a system whose data element is an array without dimensions. It allows in solving computing programs such as Matrix and vectors formulations. It writes program in a scalar language such as FORTRAN within a fraction of seconds. MATLAB can be abbreviated as a matrix laboratory. MATLAB was developed to access matrix software. The matrix software was developed by linpack and eispack projectsdeveloped .MATLAB engine incorporates LAPACK and BLAS libraries by embedding the state of art in software for matrix computation. Matlab has evolved over a period of years with input from many users. MATLAB has become a standard tool for advanced courses such as engineering, maths, and sciences .MATLAB is like a tool for high research productivity, analysis and development. MATLAB SYSTEM: MATLAB system consists of five main parts: 1).desktop tools and development environment 2).MATLAB Mathematical functions library 3).MATLAB language 4).graphics 5).MATLAB application program interface 1).Desktop tools and development environment: MATLAB is a set of tools and facilities that helps to use and to become more productive with MATLAB function and files. In MATLAB most of the tools are graphical user interfaces and includes MATLAB desktop, command window, editor and debugger, code analyzer and browser for viewing help, workspace and folders. 2). MATLAB Mathematical functions library MATLAB is a huge collection of computational algorithms ranging from elementary functions such as sum, sine, cosine and complex arithmetic to more sophisticated functions like matrix inverse, matrix Eigen values, Bessel functions and fast Fourier transforms 3). MATLAB language MATLAB language is an high level matrix language with control flow statements, functions, data structures, and object-oriented programming features. It allows small and large programming .In programming in large is to create complete large and complex application programs and programming in small is to create quick and dirty throw away programs. 4). GRAPHICS:- MATLAB is having extensive facilities to display vectors and matrices as graphs. It includes high level functions for two dimensional and three dimensional data visualization, image processing, and presentation graphics .MATLAB also includes low-level functions and allows in customizing appearance of graphics to build complete graphical user interfaces on MATLAB application. 5).MATLAB Application program interface (API):- It is a library which allows us to write C and FORTRAN programs to interact with MATLAB .It also includes facilities such as calling routines from MATLAB, calling MATLAB as a computational engine and for reading and writing MATA FILES. MATLAB working environment: MATLAB DESKTOP:- It is the main application window in MATLAB. This window consists of five sub windows such as current directory, command history, workspace browser, command window, and a figure which is shown while displaying a graphic. The User types commands in command window and expressions at the prompt. The output of these commands is displayed. In MATLAB, workspace is defined as a set of variables created by user in work session. These variables are shown in workspace browser. The workspace browser launches array editor by clicking on a variable. In array editor, we can edit properties of a variable and we can also get information about the variables. In MATLAB, the current directory tab is above the workspace tab. The Current directory tab shows contents of current directory and its path is shown in current directory window. In windows operating system, the path c:MATLABwork indicates work as a subdirectory and MATLAB as a main directory and is installed in c drive. In current directory window, click on an arrow button to see recently used paths. To change a current directory, click on a button on right side of a window. To find M-files and other MATLAB files, MATLAB uses a search path that is organized in system files. The files that are to be runned in MATLAB should locate in the current directory or in directories available on search path .Math work related tools and files that are supplied by MATLAB are already exist in search path. On desktop from file menu select set path to modify or to add search path or to see which directories are existing on search path. To avoid repeated changing, the current directory adds a commonly used search paths to directory. In MATLAB, the commands used by the user in current and earlier sessions are recorded in command history window. Using right click on command history window, we can select and re-execute previously entered MATLAB then it launches a menu. For execution of the commands select the options from menu. We can select various options from menu for execution of the commands which are useful in implementation of various commands. MATLAB EDITOR TO CREATE M-FILES: The MATLAB editor is used for creating M-files. The graphical window will appear in a separate window or a sub window. The M-files are represented as extension .m on desktop. MATLAB editor is having some options to debug a file and saving a file and to view the file. In differentiating various codes MATLAB editor will perform some simple checkings. In MATLAB, text editor is used to write and to edit M-functions. To edit a text in MATLAB, type as EDIT at prompt then it an M-file is opened with a filename. Therefore it is ready for editing. The files should be in a search path or in a current directory. How to get help in MATLAB: Use the MATLAB help browser for any help in the MATLAB. The help browser will be opened in a separate window when we click on symbol (?) on desktop toolbar or in command window type as help. The Browser Help is displayed separately as a HTML document .HELP browser is incorporated into MATLAB desktop .HELP pane and DISPLAY pane are the two panes that are available in HELP browser. HELP pane is used in finding the information and display pane is used for viewing the information. To perform a search, Navigator pane is used. CONCLUSIONS: This project explains techniques for embedding a data in an color image and also some features are added which include file types excluding bitmap images and Steganography methods. Data extracted from cover image depends on pixel values of an image CODING : %I=imread(sravs.bmp); %%read an image I=uigetfile(.bmp,select the iamge); I=imread(I); b=1; disp(orginal text to be embedded); %txt= textread(message.txt, %c, whitespace , ); fid = fopen(message.txt); A=fread(fid,schar); fclose(fid); A1=char(A); disp(embedding text); txt=A1; txt N = 8*numel(txt); %%%%%%% to find out the total no of elements for the text S = numel(I); %%%% total no of elements for the image if N > S warning( Text truncated to be within size of image );%%%%%%if text size is more than the image size %%%%%% process block segmentation txt = txt(1:floor(S/8));%%%%%% dividing into 8*8 blocks for the text N = 8*numel(txt); end %%%%% initializing the total no of bits for the text and the image p = 2^b; h = 2^(b-1); I1 = reshape(I,1,S);%%%%% resize the elemnts for the new image size %figure ,imshow(I1,truesize); addl = S-N;%%%%%%%take the difference of the elments for the imagfe and the text dim = size(I); I2 = round(abs(I1(1:N)));%%%%%%take the complexity of each block si = sign(I1(1:N)); for k = 1:N if si(k) == 0%%%%%%%replace ment of the bits for the complexity blocks si(k) = 1; end I2(k) = round(I2(k)); if mod((I2(k)),p) >= h I2(k) = I2(k) h; end end bt = dec2bin(txt,8);%%%%%% bint = reshape(bt,1,N); d = h*48; bi = (h*bint) d; %%%%%%remove the complexity blocks of the image and replace with the non complexity blocksof image I3 = double(I2) + bi; binadd = [bi zeros(1,addl)]; I4 = double(si).*double(I3); I5 = [I4 I1(N+1:S)]; intl = reshape(I5,dim);%%%%%%resize the image and display the stego cotents figure,imshow(intl);title(stegnograph image); %return figure,imshow(I);title(original image); I=im2bw(I); %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%decoding%%%%%%%%%%%%%%%%%%%% siz=length(txt); bsiz = 8*siz; n = numel(intl); if bsiz > n error(Size of text given exceeds the maximum that can be embedded in the image) return end dim = size(intl); addl = n-bsiz; I1 = reshape(intl,1,n); I2 = round(abs(I1(1:bsiz))); p = 2^b; h = 2^(b-1); rb = zeros(1,bsiz); for k = 1:bsiz I2(k) = round(I2(k)); r = rem(I2(k),p); if r >= h rb(k) = 1; end end rbi = (dec2bin(rb,1)); rbin = reshape(rbi,siz,8); rectxt = (bin2dec(rbin)); disp(retrived text from the steg image); rextxt=char(rectxt) return