Escherichia coli and Proteus vulgaris Essay Example

Escherichia coli and Proteus vulgaris Paper According to Table , Escherichia coli and Proteus vulgaris showed fermentative activity. However Proteus vulgaris only showed it for glucose, while E.coli showed it for all three of the carbohydrates. Pseudomonas aeruginosa showed no fermentation. In table 3, the only bacteria which showed a production of indole was Escherichia coli. This is because E. Coli has the enzyme tryptophanase that can degrade the amino acid tryptophan into indole, pyruvic acid and ammonia. (Madigan and Thomas, 2009)The idole produced by the bacteria binded with the p-dimethlyaminobenzaldehyde in the reagent to produce the red compound. (Madigan and Thomas, 2009) In table 5, the Proteus vulagris was the only positive bacteria for the urease test. This means that Proteus vulagris is a rapid urease-positive organism. The restrictive amount of nutrients coupled with the use of pH buffers prevent all but rapid urease-positive organisms from producing enough ammonia to turn the phenol red pink. (Madigan and Thomas, 2009) The Urease broth can be used to differentiate members of the genus Proteus. In table 7, the proteus vulgaris is the only positive bacteria. The reason for this result is that Proteus Vulgaris is positive in the hydrogen sulfide test because it can undergo anaerobic respiration using Sulfur as an electron acceptor. (Madigan and Thomas, 2009)In table 9, Bacillus subtilis showed positive result on the starch hydrolysis whereas Escherichia coli did not. Starch hydrolysis requires the presence of exoenzyme amylase to hydrolyze starch into smaller polysaccharides. (Madigan and Thomas, 2009) Positive result of starch hyrdrolysis showed the ability of the mircoorgism to produce amylase. In table 11, showed that all of the bacteria are capable of producing catalase. Hydrogen peroxide is an superoxide which is able to be degraded by catalase. All of the bacteria where able to produce the enzyme to degrade it. In the oxidase test only Pseudomonas aeruginosa had a positive result. This is because it is the only microorganism out of the others which has oxidase. We will write a custom essay sample on Escherichia coli and Proteus vulgaris specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Escherichia coli and Proteus vulgaris specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Escherichia coli and Proteus vulgaris specifically for you FOR ONLY $16.38 $13.9/page Hire Writer This means it takes part in cytochrome oxidase activity. Oxidase activates the oxidation of reduced cytochrome c by molecular oxygen in aerobic organisms during electron transport. (Madigan and Thomas, 2009) Oxidized cytochrome c transfers molecular oxygen to tetramethyl-p-phenylenediamine when the reagent is added to growth of an oxidase positive organism. (Madigan and Thomas, 2009) This experiment has the possibility of human error. Mistakes could have been made by failing to sterilize the inoculating loop correctly, which would result in possible contamination of the sample. Another error could have been possibly occurred by mislabeling the plates according to species, which would produce invalid results. In conclusion the experiment was successful. I learned to distinguish species of bacteria by cultivating in different media and doing some tests. I also practised the proper techniques of testing for fermentation of carbohydrates, production of indole, activity of urease, production of hydrogen sulfide, evidence of amylase activity, evidence of lipase activity, and evidence of protease activity. References Department of Biology, 2010, Biology 130 Fundamentals of Microbiology Laboratory Manual. University of Waterloo, Waterloo pp. 23 32. Goldman, Emanuel, and Lorrence H. Green. Practical Handbook of Microbiology. Boca Raton: CRC, 2009. Print. Madigan, Michael T., and Thomas D. Brock. Brock biology of microorganisms . 12th ed. San Francisco, CA: Pearson/Benjamin Cummings, 2009. Print. Observing Plates. Biology @ Davidson. N.p., n.d. Web. 12 Nov. 2010. http://www.bio.davidson.edu/people/dawessner/302/302Lab3.html.

Free Essays on Nickel And Dimed

Tiffany Torrez Since the earliest days America has been thought of as a land of opportunity and a place in which people could escape religious persecution. America was one of the few places in the 1800’s where people were able to increase their social and economical status. Everything about America was enticing so many people moved here. One problem that people in other countries faced was that there was no religious freedom. According to the Maryland Act of Tolerance the United States would promise religious freedom to all Catholics and Protestants (1). Another factor that drove people out of their countries was that fact that in many countries there were civil wars going on. If you were caught on the wrong side of a civil war you would be imprisoned or evened killed (3). There were also a variety of jobs available in America as opposed to other countries where it was near impossible to find any job (2). Immigrants viewed America as a land of opportunity because it was possible to pursue their dreams. Peasants who could never own their own land could buy land and make money (4). A completely free education was another attraction that America had to offer. This was so good because if someone got an education they were able to go to college and get a real job and make a decent amount of money. In other countries school was a luxury for only wealthy kids (5). There were numerous types of jobs such as blacksmith, wheelwright, cooper, ECT. Since the beginning there was always something for everyone in America. Weather it were a good factor about the U.S. or a bad factor about their country something always encouraged people to come here At the turn of the century, immigrants steamed into Ellis Island to escape political Persecution, Religious Persecution and poverty, in exchange for "Life Liberty, and Pursuit of Happi... Free Essays on Nickel And Dimed Free Essays on Nickel And Dimed Tiffany Torrez Since the earliest days America has been thought of as a land of opportunity and a place in which people could escape religious persecution. America was one of the few places in the 1800’s where people were able to increase their social and economical status. Everything about America was enticing so many people moved here. One problem that people in other countries faced was that there was no religious freedom. According to the Maryland Act of Tolerance the United States would promise religious freedom to all Catholics and Protestants (1). Another factor that drove people out of their countries was that fact that in many countries there were civil wars going on. If you were caught on the wrong side of a civil war you would be imprisoned or evened killed (3). There were also a variety of jobs available in America as opposed to other countries where it was near impossible to find any job (2). Immigrants viewed America as a land of opportunity because it was possible to pursue their dreams. Peasants who could never own their own land could buy land and make money (4). A completely free education was another attraction that America had to offer. This was so good because if someone got an education they were able to go to college and get a real job and make a decent amount of money. In other countries school was a luxury for only wealthy kids (5). There were numerous types of jobs such as blacksmith, wheelwright, cooper, ECT. Since the beginning there was always something for everyone in America. Weather it were a good factor about the U.S. or a bad factor about their country something always encouraged people to come here At the turn of the century, immigrants steamed into Ellis Island to escape political Persecution, Religious Persecution and poverty, in exchange for "Life Liberty, and Pursuit of Happi...

Information technology Term Paper Example | Topics and Well Written Essays - 5000 words

Information technology - Term Paper Example The areas of responsibility of the IT Manager include but not limited to the IT Project Management, Computer Network and Server Administration, compliance of Information Technology and procedures, Information Security, moreover, the responsibility of automating a company by implementing Enterprise Resource Planning (ERP) including diverse departments (finance, sales & marketing, procurement, operations, inventory etc.) of a company. However, a lead IT Manager can also be responsible for the developing and implementing information technology policy, strategic direction and planning for implementing information technology standards in a company by utilizing human and technical resources. One of the known definitions of the management is â€Å"getting things done through other people† (The Big Geek, 2010). It would be a great opportunity for me to work as Lead Information Technology Manager in Magnum Enterprises. Keeping in view the diverse roles of the lead IT manager and the pu rpose of Magnum Enterprises for hiring me, I would like to discuss on integrating the software, hardware and business management capabilities. I believe that the role of IT Management includes: the research and development by understanding the IT requirements of the company and implementing software and deploying hardware so that the company should be able to enhance productivity. In order to achieve my objective, I need to work on developing the policies, action plans keeping in view the operations of the company. The IT policy and strategic plans should be in accordance to the company’s priorities so that the company would able to achieve its predefined goals. Actually, the IT is utilized to improve the effectiveness and efficiency of the company’s business processes by developing and utilizing software applications / products so that the customer’s of the company should get quality services. Once the company would be able to achieve customer satisfaction, the company would ultimately get increase profitability and competitiveness. It is significant to know the goal, objectives and mission statement of the company before developing any strategy. Therefore, primarily I will review the company’s goals and objectives to keep myself informed of the priorities of the Magnum Enterprise. It will not only give me the right direction but also guide me to take informed decisions. It is important to investigate the business process of the Magnum Enterprises, moreover, the current IT infrastructure, provision of services to the customers, the prevailing IT standards and procedures. One of the important responsibilities of the lead IT manager is to communicate with all the stakeholders. Furthermore, I believe that the lead IT manager is a mediator between the company’s senior management and the team, therefore, it is equivalently significant that I should know the tools required for reporting to the senior management / Chief Information Officer (CIO) – Ms. Rachel Heigl. Furthermore, the current job roles of the team so that I could be able to assign the tasks to my team. It is primarily the responsibility of the lead IT manager to motivate, inform and utilize the team in an appropriate manner so that the team would be occupied to achieve the company’

E-Business in the United States Essay Example | Topics and Well Written Essays - 5000 words

E-Business in the United States - Essay Example In Drucker's account, technology and the invention of calculating machines, in particular the computer, are central to the progress of society through the three revolutions outlined above. Traditional factors of production - land, capital and labour - have become secondary to knowledge. As long as there is specialized knowledge these factors can be obtained. In this view, company transactions become weightless. For example, the value of Coca-cola is tied not to the value of production of a fizzy drink, but the power the brand exercises in the market place. In the above mentioned context, it is reasonable to compare the building of the interstate highway system in the United States between 1956 and 1976 and the Internet as innovations. The interstate and Internet are both network innovations. The former transformed the economic geography of the United States, promoting lower transport costs, greater market access, outward mobility into the suburbs and the rise of the local shopping mall. While the Internet offers a wider selection and a greater ability to search, the delivery of goods is not immediate. Consequently, Internet marketing may not be superior to the marketing of the conventional shopping malls. The Internet remains part of the long march of creating innovations, but like all technology it is the nature of human inventiveness that makes them beneficial. The period of building the interstate system coincides with an annual average 1.6 per cent growth in real earnings on the Standard & Poor's 500 index of the financial performance of the top 500 US companies. Despite the enormous impact of the interstate on the economic geography of the United States why were these earnings not higher The answer according to Schiller was that the interstate system was just another innovation along the path of inventiveness. Similarly, evidence from McKinsey & Co., the international consultancy, shows that the impact of new technology, including the Internet, on productivity in the United States in the late 1990s was much less than was believed at the time (McKinsey 2001). The relationship between technological change, economic growth, increased productivity and profits is much more complex and indirect than the easy direct relationship suggested by some popular commentators. In the past decade the service sector has been in the forefront of investment in new technologies in the advanced economies. But executives have been deluded: the payoffs have not been fully realized: The primary reason is that technology alone does not determine corporate performance and profitability. Employee skills and capabilities play a large role, as do the structure of day-to-day operations and the company's policies and procedures. In addition, the organisation must be flexible enough to respond to an increasingly dynamic environment. And products must meet customer requirements. (Hackett 1994:21) These observations act as a health warning to the business environment for e-Commerce. This warning is not posted to suggest that Internet-based transactions will fail to deliver material benefits to producers and consumers alike. Rather, they act to signpost the difficulties associated with claims that we now live in a new business, economic and social order. This paper attempts to explain the context in which e-Commerce has developed and the difficulty faced by companies that believe the

Credit Markets Research Paper Example | Topics and Well Written Essays - 750 words

Credit Markets - Research Paper Example The next step in the treasury auction process is the bidding process, which entails the prospective buyers of the credit items making the bids, either through a process of competitive or noncompetitive bidding (Treasurydirect.gov, n.p.). The competitive bidding allows the prospective buyers to offer their bids competitively up to the maximum limited amount of securities, while in the noncompetitive bidding; the prospective buyers have to agree with the terms of the sale of the securities as set. The final process in the treasury auction process is the issuance stage, which is the stage where the bidders who successfully bid and were allocated securities in different categories have the securities delivered to them. When treasury delivers the securities to the bidders, it then charges the total amount of the cost of securities on the accounts of the successful bidders (Treasurydirect.gov, n.p.). 2. Discuss the activities of other major new debt-securities issuances (agency, municipal, foreign, and others) from collected articles, including lead underwriter(s), the amount of each issue, and other reported terms. Major new debt-securities issuances have been occurring in the USA credit market. Among the major new issuances in 2015 include the issuance of securities worth $483.615 million by the Washington Municipal (Thomson Reuters, n.p.). The Washington Municipal securities were preliminarily issued on February 10, 2015, with the Foster Pepper being the underwriters and also the bookkeepers (Thomson Reuters, n.p.). Another new security issuance includes that of the Michigan Finance Authority worth 197.535 million, which was issued on February 13 of this year, with the J P Morgan Securities LLC., being the underwriters (Thomson Reuters, n.p.). On the industrial front, OHR Pharmaceutical issued new securities worth $25.0 million on 5th February of this year, with Cowen Group being the underwriters (Thomson

Limitations Of Text Based Image Retrieval Psychology Essay

Limitations Of Text Based Image Retrieval Psychology Essay Sometimes a relevant image might be left out owed to the absence of specific keywords. While often there might be no relevant text surrounding the images or videos, but they are relevant. In fact, there might exist images or videos where the surrounding text has nothing to do with them. In these cases, these returned results might be irrelevant and have nothing in common with the required images and videos. The other approach uses the annotation of the images and vides and is often a manual task. The text-based technique first annotates with text, and then uses text-based retrieval techniques to perform image and video retrieval. Annotation of images and videos lets the user to annotate the image with the text (metadata) that is considered relevant. The text can be time, event, location, participants or whatever the user finds relevant. 2.6.1.1. Limitations of Text based Image Retrieval: Nevertheless, there exist two major difficulties, especially when the volume of image collections is large with hundreds of thousands samples. One is the huge amount of human labor required in manual image/video annotation and is very time-consuming. Textual based retrieval cannot append the perceptual significant visual features like color, shape, texture [Bimbo. 1999]. The other difficulty comes from the rich content in the images and the subjectivity of human perception which is more essential. The annotation of the image and videos completely depends on the annotation interpretation [Enser et al 1993] i.e. different people may perceive the same image differently as shown in the figure 3 . The perception subjectivity and annotation impreciseness may cause unrecoverable mismatches in later retrieval processes. And to retrieve the required data the user constructs a query consisting of the keywords that describes the desired image and video. Although the text based retrieval system has gained benefits of traditionally successful information retrieval algorithms and techniques. Figure 3: Multiple interpretation of same images Park like Tree, Sky, Horse, People, Ridding, Sunny Day, Outdoor Critics of text-based approach dispute that for accurate image annotation it must be automated. The automatic annotation is limited due to its deficiency of extracting semantic information from the images and videos. Only automatic annotation of images and videos in integration with pure text-based image retrieval will be inadequate. The available metadata is mostly restricted to the technical information surrounding the image or video, such as time, resolution of the image or video and name of the image or video. The users may find it difficult to use text to perform a query for some portion of the content of an image or video. Text-based retrieval techniques are absolutely limited to search the metadata that is tagged to the image or video. If the text queried is not annotated with the same tag as attached with the image or video, the data is not returned. This means that if a particular piece of the image or video is interesting this must be explicit included in the metadata. If the desired object is not a main part of the image or video, sometimes it may happen that is not described in the metadata and hence cannot be a retrieve as a result from a query describing such portions of the image or video. One of the disadvantages of text-based image retrieval is that a word can have different meanings. This problem is best illustrated with an example, searching for the images or videos of jaguar or Apple. The system cant differentiate either the user is looking for the jaguar car or jaguar animal as shown in the figure 4. The two concepts have the same name but contain an entirely different semantic idea. The retrieval systems dont have reliable ways to separate the concepts. These problems are present even in systems with automatic synonym lists or thesaurus capabilities [Schank et al. 2004]. There exist several text-based image retrieval services today, Google is a large player. Google is the largest player but still faces the same problem. Figure 4: Same name different Semantics Attempts have been made to make the tags attached to the image or videos more flexible by attaching vast number of descriptive words. The thesaurus based annotation or knowledge based annotation has gained much of the researchers attention [Tring et al. 2000]. Recent development in video retrieval has focused on models that combine several modalities for joint indexing and retrieval. Consideration to the demands, researchers concluded that visual features play a crucial role in the effective retrieval of digital data. This initiates to the development of the content based image and video retrieval [Venters et al. 2000]. 2.6.2. Content based Image Retrieval: The need to manage these images and locate target images in response to user queries has become a significant problem. One way to solve this problem would be describing the image by keywords. The keyword based approach has a bottleneck of manually annotating and classifying the images and videos, which is impractical for the overwhelm corpuses. The human perception subjectivity problem may affect the performance of the retrieval system. Current commercial image and video search engines retrieve the data mainly based on their keyword annotations or by other data attach with it, such as the file-name and surrounding text. This relinquishes the actual image and video more or less ignored and has been following limitations. First, the manual annotation of images requires significant effort and thus may not be practical for large image collections. Second, as the complexity of the images increases, capturing image content by text alone becomes increasingly more difficult. In seeking to overcome these limitations, content-based retrieval (CBR) was proposed in the early 1990s [Baeza-Yates et al. 1999]. Content-based means that the technology makes direct use of content of the image and video rather than relying on human annotation of metadata with keywords. Content-based retrieval (CBR) research endeavors to devise a retrieval system that exploits digital content in the retrieval process in a manner that is eventually independent of manual work. CBR is an umbrella term for content-based multimedia retrieval (CBMR), content based visual information retrieval (CBVIR), content-based image retrieval (CBIR), content-based video retrieval (CBVR) and content-based audio retrieval (CBAR). CBR may also be termed as multimedia information retrieval (MIR). Content based retrieval extract the feature of the image or video themselves and use it for retrieval rather than the user generated meat data. CBR uses the primitive features of the image and video like the color, shape, texture, motion etc. [Sharmin et al. 2002]. Content based system index the images and videos automatically by using different techniques for their visual contents. For the computer, a video is merely a group of frames with a temporal feature, where each frame is basically an image. The computer take each image as a combination of pixels characterize by the low-level color, shape and texture. CBR represents these features in the form of vectors called the descriptors of the image or video. CBR extract these primitive features by using automated techniques and then further use it for searching and retrieval. Thus, these low-level visual features extraction from images and videos has initiated to the many research in the CBR [Veltkamp et al 2000]. A typical CBIR system should be able to interpret the content of the images in a query and a collection, compare the similarity between them, and rank the images in the collection according to their degree of relevance to the users query [Tamura at al. 1984]. The figure 5 shows the typical content based retrieval system. Retrieval deals with the problem of finding the relevant data from the collection of images or videos according to the user request. The user request may be in the form of the textual data or in the form of query by example. Its relatively easy to extract the low level features from the images and videos in the query as well as in the collection and then compare it. Figure 5: Typical Architecture of Content Based Retrieval The paramount objective of CBR is efficiency during image and video search and retrieval, thereby reducing the need for human intervention. Computer can retrieve the images and videos by using CBR techniques from the large corpus without the human assumption. These low level extracted features then represent the image or video and these features are used later on for performing the similarity comparison between the other images or videos in the corpus. These extracted features serve like a signature for images and videos. Images and videos are compared by using different similarity comparison techniques. They are compared by calculating the dissimilarity of its characteristic components to other image or video descriptors. CBR approach shows substantial results with the queries like show me the images or videos of the red color, Show me the image with blue color is above the green color etc. The available automated CBR techniques deal such a type of queries elegantly but flunk to cope with the high level semantic queries like Show me the images or videos of the people in the park, people on the beach, car on the road etc. Such type of queries cannot be tackled successfully by the CBR systems. These queries require more sophisticated techniques to extract the actual semantics abstracted inside it. Related work in CBR from the perspective of images can be found from the overview studies of [Rui et al. 1999], [Smeulders et al. 2000], [Vasconcelos et al. 2001], [Eakins 2002], [Kherfi et al. 2004], [Datta et al. 2005] , [Chen et al. 2004], [Dunckley 2003], [Santini. 2001] [ Santini et al.2001], [Lew et al. 2001], and [Bimbo et al. 1999]. CBIR has received considerable research interest in the last decade [Vasconcelos et al. 2001] and has evolved and matured into a distinct research field. The CBIR mainly comprises of two main steps feature extraction and the similarity measurement. These key technical components of the CBIR system will be introduced in the following sections. 2.6.2.1. Feature Extraction: Images are described by visual words just like text is defined by textual words In fact, an image or a video frame is merely a rectangular grid of colored pixels for a computer. And to a computer an image doesnt mean anything, unless it is told how to interpret it. Image and video descriptors are intended for the motive of image or video retrieval. Descriptors seek to apprehend the image or video characteristics in such a way that it is facile for the retrieval system to identify how similar two images or videos are according to the users interest. CBR system index images or videos by using the low-level features of the image and videos itself, such as colour [Pass et al. 1998, Smith et al. 1996a, Swain et al. 1991], texture [Manjunath et al.1996, Sheikholeslami et al. 1994, Smith et al. 1996b], shape [Safar. M et al. 2000, Shahabi et al. 1999, Tao et al. 1999] , and structure features [Pickering et al. 2003, Howarth et al. 2005]. The color, shape and texture are the principal features of the images. The visual contents of images and videos are then symbolized a s a feature vector of floating numbers. For example, the colour, texture and shape features extracted from an image form an N-dimensional feature vector, and can be written as Where is a vector of its own, and is the colour, is texture and n3 is the shape. While for the video there is an additional vector, where is the motion. In the following section, we introduce the visual features to give an impression of how images and video framesncan be converted into a representation that the retrieval system can work with. 2.6.2.1.1. Color: A very common way to see at images is by analyzing the colors they contain. Colour is the most prominent visual feature in CBIR since it is well correlated with human visual perceptions of objects in an image. A digital colour image is represented as an array of pixels, where each pixel contains three or four tuples of colour components represented in a numerical form. The abstract mathematical representation of colours that computers are able to use is known as the colour model. The similarity between the images and the videos is calculated by using the color histogram value. The histogram depicts the specific values of the pixels inside the image or video frame. The current color based retrieval techniques divides the image into regions by using color proportion. The color based technique doesnt depend on the size and orientation of an image. Since 1980s various color based retrieval algorithms have been proposed [Smith et al. 1996 c]. A most basic form of color retrieval involves specifying color values that can be further used for retrieval. Indeed, Googles image and Picasa 3.0, can also provide the facility to the user to search the images that contain homogenous color composition. The most common representation of color information is in the form of color histogram and color moment. Color anglogram [Zhou X.S. et al. 2002], correlogram [Huang J. et al 1997], color co-occurrence matrix (CCM) [Shim S. et al. 2003] are some of the other feature representations for color. Figure 6: Color based image interpretation 2.6.2.1.1.1. Color Spaces: There are many color spaces designed for different systems and standards, but most of them can be converted by a simple transformation. i. RGB (Red-Green-Blue): Digital images are normally represented in RGB color space; it is the most commonly use color space in computers. It is a device dependent color space, which used in CRT monitors. ii. CMY (Cyan-Magenta-Yellow), CMYK (CMY-Black): It is a subtractive color space for printing, it models the effect of color ink on white paper. Black component is use for enhancing the effect of black color. iii. HSB (Hue, Saturation, Brightness) or HSV (Hue, Saturation, Value): It was used to model the properties of human perception. It is an additive color model. However it is inconvenient to calculate color distance due to its discontinuity of hue at 360. iv. YIQ, YCbCr, YUV: Used in television broadcast standards. Y is the luminance component for backward compatibility to monochrome signal and other components are for chrominance. It is also used in some image compression standards (e.g. JPEG) that process luminance and chrominance separately. Figure 7: The additive colour model HSV 2.6.2.1.1.2. Color Models: A color model is an abstract mathematical model describing the way colors can be represented as tuples of numbers, typically as three or four values or color components. When this model is associated with a precise description of how the components are to be interpreted (viewing conditions, etc.), the resulting set of colors is called color space  [1]  . A color model is a formularized system for composing different of colors from a set of primary colors. There are two types of color models, subtractive and additive. An additive color model uses light emitted directly from a source. The additive color model typically uses primary color i.e. red, green and blue light to produce the other colors. Combination of any two of these additive primary colors in equal amounts produces the additive secondary colors or primary subtractive model colors i.e. cyan, magenta, and yellow. Integration of all these three colors RGB in equal intensities constitute white as shown in the Figurea8 a. Figure 8 (a): RGB: Additive Color for light-emitting computer monitors. Each colored light add to the previous colored lights. A subtractive color model illustrates the blending of paints, dyes,   and natural colorants to produce a full series of colors, each generated by subtracting (absorbing) some wavelengths of light and reflecting the others. Colors observed in subtractive models are the due to reflected light. Different wavelength lights constitute different colors. The CMYK model (Cyan-Magenta-Yellow-blacK) model is the subtractive model. The combination of any two of these primary subtractive model color i.e.(Cyan, Magenta, Yellow) results in the primary additive model or secondary subtractive model color i.e. red, blue, green and the convergence of it constitute black color as shown in the figure 8 b. Figure 8 (b): CMYK: Subtractive colors for Printer. Each color added to the first color blocks the reflection of color, thus subtracts color. For some of the concepts the color scheme helps in achieving suitable results like forest, sky, tree, grass, sea etc. The color descriptor will help in retrieving the accurate results. But for the categories like the car, house, street etc. Color descriptors cant play a vital role. The color descriptor will fail in a situation of the same car with different colors as shown in the figure 9. For the retrieval based on the color two most frequently used representative are color histogram and color moment. These representatives are represented in the section below. Figure 9: Same Car with different color composition a. Color Histogram: A histogram provides a summary of the distribution of a set of data. A color histogram provides a comprehensive overview of the image or video frame in terms of color. A colour histogram for a coloured image describes the different intensity value distributions for colours found in the image. The histogram intent to define the number of times each color appears in an image/video frame. Statistically, it utilizes a property that images having similar contents should have a similar color distribution. One simple approach is to count the number of pixels of each color and plot into a histogram. The histogram h of an image I is represented as: H(I)= Where pi is the percentage of i-th color in the color space, N is the number of colors in the color space. To enable scaling invariant property, the histogram sum is normalized to 1. The percentage is proportional to the number of pixels in the image. Figure 10: Shows the Color Histogram Mostly commercial CBR systems like Query-By-Image-Content uses color histogram as one of the feature for the retrieval. Colors are normally grouped in bins, so that every occurrence of a color contributes to the overall score of the bin it belongs to. The bin explains the intensities of different primary color i.e. quantity of red, blue or green for a particular pixel. It doesnt define individual color of the pixels. Histograms are usually normalized, so that images of different sizes can be fairly compared. The colour histogram is the most commonly and effectively used colour feature in CBIR [Swain et al. 1991, Faloutsos et al. 1994, Stricker et al. 1995, Deselaers et al. 2008, Chakravarti et al. 2009 and Smeulders et al. 2000]. Retrieving an images based on the colors technique is widely used because it does not depend on image size or orientation. The most common method to create a colour histogram is by splitting the range of the RGB intensity values into equal-sized bins. For example, a 24-bit RGB colour space contains 224 possible (RGB) values. Since this gives us approximately 16.8 million bins, it will be too large to be dealt with efficiently. Therefore, we need to quantize the feature space to a smaller number in order to reduce memory size and processing time; as examples [Stricker et al. 1995, Swain et al. 1991] have proposed techniques for colour space quantization. After having defined the bins, the numbers of pixels from the image that fall into each bin are counted. A colour histogram can be used to define the different distributions of RGB intensity values for a whole image, known as a global colour histogram, and for specific regions of an image, known as a local colour histogram. For a local colour histogram, the image is divided into several regions and a colour histogram is created for each region. A histogram refinement strategy has been proposed by Pass for comparing the images [Pass et al.1996]. Histogram refinement splits the pixels in a given bucket into several classes, based upon some local property. Within a given bucket, only pixels in the same class are compared. They describe a split histogram called a color coherence vector (CCV), which partitions each histogram bucket based on spatial coherence. [Han et al. 2002] proposed a new color histogram representation, called fuzzy color histogram (FCH), by considering the color similarity of each pixels color associated to all the histogram bins through fuzzy-set membership function. This approach is proves very fast and is further exploited in the application of image indexing and retrieval. The paradigm of the color histogram works on the assumption that all the images or videos frames with the similar color composition are similar [Jain et al. 1995]. It will retrieve all the data whose color composition is similar to the given query. This will be true in some cases. Color composition cant be the identity of the image or object inside the image. Color Moment: Color moment approach was proposed by [Stricker et al. 1995]. It is a very compact representation of color feature. The mathematical meaning of this approach is that any color distribution can be characterized by its moments. Moreover, most of the information is concentrated on the low-order moments, only the first moment, second and third central moments (mean, variance and skewness) were extracted as the color feature representation. Color similarity can be measured by Weighted Euclidean distance. Due to the ease and sound performance of color histogram technique it is widely used in color based retrieval systems. Color is the human visual perceptual property. Human discriminate an images or objects initially on the basis of colors. Color can be extracted from the digital data easily and automated and effective functions are available for calculating the similarity between the query and the data corpus. Color feature are effectively used for indexing and searching of color images in corpus. The existing CBIR techniques can typically be categorized on the basis of the feature it used for the retrieval i.e. color, shape, texture or combination of them. Color is an extensively utilized visual attribute that plays a vital role in retrieving the similar images [Low et al. 1998]. It has been observed that even though color plays a crucial role in image retrieval, when combined with other visual attributes it would yield much better results [Hsu et al. 1995]. This is because, two images with entirely similar color compositions, may have different color composition and sometimes two images have same color composition but they are not similar as shown in the figure. Hence something that looks similar is not semantically similar. The color composition of both the images in figure 11 is same but they depict the entirely different semantic idea. By analyzing both the images using the color based retrieval techniques both the images are similar

The Host Book Review

The Host Book Review Melanie Stryder is one of few â€Å"wild† human rebels who have evaded the alien souls currently taking over the Earth. With her younger brother, Jamie, and the man she loves, Jared Howe, Mel is on the run from souls who hunt down host bodies for use. Souls are creatures that rely on host bodies to survive. After insertion, they erase any mental presence of the being originally there and establish a claim over the body and mind. Earth is Wanderer's ninth planet, and Mel is her ninth host body.Upon waking inside her new body, she is shocked not only by the vividness of human emotions, memories, and senses, but quickly learns that Melanie Stryder is not willing to give up the entirety of her mind. Stephenie Meyer’s Twilight Saga has often been described as vampire fiction for people who don’t like vampires. It is fair to say that with The Host, her latest novel, she has once again managed to break the usual genre stereotypes. This time, writing a science fiction novel for people who don’t like science fiction.Unlike the most popular alien invasion movies and science fiction television shows, The Host doesn’t have Will Smith or Richard Dean Anderson to save the planet against a background of gun fire, secret weapons, and loud explosions. In The Host humanity is lost, vastly outnumbered and overwhelmed by superior technology. There are tiny pockets of resistance left; just a handful of humans who have yet been captured, but they don’t spend their days plotting to retake the planet from the aliens.Just trying to survive consumes all their time. The Host isn’t really about saving the planet from alien invaders; it’s a story about what it is to be human, about identity and about individuality. Most of all The Host is a story about the nature of love. Romantic  love, love of family, love of friends – all of these emotions are explored by Wanderer as she first surrenders to Melanieâ₠¬â„¢s emotional memories then surrenders to the emotions for herself.There is more than just memories left of Melanie though; she is trapped inside her own head unable to take control of her own body, forced to be an unwilling host to the alien Wanderer. Which makes things very interesting when Wanderer and Melanie eventually meet up with Melanie’s loved ones. Possibly the largest similarity between The Host and Stephenie Meyers Twilight Saga is the character of Wanderer. She has something of a Bella vibe going on. It is the way that they are both self sacrificing.Wanderer’s alien nature actually makes her even more self sacrificing than Bella which means that she needs others to look out for her and take care of her since she has little instinct for self preservation. Unlike the Twilight Saga, I would recommend The Host for both teens and adults. Stephenie Meyer wrote this book to attract a wide audience. All in all The Host makes a very compelling read. Avoiding the obvious science fiction cliches, it concentrates on humanity and the human emotions experienced by an alien invader who really wants to be a human.

Pope

The text under analysis â€Å"Doreen Pope† is a type of publicistic writing, feature article. The author M. Loudon managed to make this text informative and entertaining for the reader. The article concentrates on an Interesting theme. The theme of the article is about the role of a teacher in the system of education in GB. The author embodies the theme into incomparable character. The story reveals the image of ideal teacher. M. Loudon convinces us of the importance of the teacher's role for children.This important idea that the author expresses in the process of developing the theme is he message of the story. The theme is organically connected with the message. And M. Loudon places the maln point very appropriately. It has a complex character Is created with the help of interaction of implications and develops further. Sufficient arguments, details and examples support the main idea. â€Å"Miss Pope was an enormous success with the children because she had a genuine affini ty with them.She also had an unpretentious disregard for the formal†. The author uses references effectively and her reasoning sounds very logically and convincing. â€Å"Miss Pope believed that children only learnt self-worth and corporate responslblllty through ecognition of their gifts, however insignificant they might have seemed in scholastic terms: so while she was appreciate of talent and enthusiasm, it was those who were shy. or obstreperous. or who found reading or writing Is difficult, which whom she spent the most time. Such cohesive devices as â€Å"practically, so, also, indeed, Just, however† within the paragraphs and the repetition the main character's name between them catch the reader's attention, give more prominence to the words. Implication is conveyed by different techniques, artistic details, arrangement of plot structure and images. With the help of it the writer achieved her main purpose. M. Loudon Informs the reader about educational system In GB, convinces us of the importance of the role of a teacher. She makes us feel sympathy to the main character and respect her strong personality.M. Loudon reminds us about eternal values and morals In our life. The style of presentation of these ideas Is appealing and appropriate for the situation. â€Å"Practically, no one reading this will have of Miss Pope. Her greatness is no obvious and it has never been documented. † using not very formal style the writer involves us to the situation, Invites to an open dialog, creates ree and trust atmosphere. The author's attitude to the character determines the tone of the story. Tone expresses the relationship between the author and the character.It Is sympathetic, cheerful, and enthusiastic. M. Loudon resorts to emotionally colored words, such as â€Å"cheerful†, â€Å"Jolly†, â€Å"brisk†, â€Å"great†. An extensive Image of the character Is created by similes â€Å"Miss Pope and Sheena as the Madonna and Child in Renaissance Europe† epithets: â€Å"wholesome woman†, â€Å"unobtrusive clothes†, â€Å"sensible shoes†, â€Å"affectionate woman†, â€Å"Insatiable sense of humor†. Metaphors: â€Å"she never lost her cool†, antitheses: â€Å"from sunny hildhood to dark adolescence† Intensifiers, such as: â€Å"completely different tot us†, â€Å"such an aloof dog†.Polysyndeton: â€Å"she had an insatiable sense of humor and a nuge, rotund laugn, ana sne never Tallea to reward even tne dullest anecdote. † I use of low-colloquial words intensifies the contrast; make a parallel between primary and secondary school: â€Å"fuck off, posh bitch† The writer applies contrast, parallel structure, framing to visualize the article. The use of these means produces a humorous effect and testifies to the inventiveness and wit of the author. The title of the article catches our attention, gives prominence o the main c haracter due to capitalization.The title is the name of the character that emphasizes its importance in the article, defines sympathetic feelings of the author, and arouses reader's interest to it. The article raises important and interesting themes. It forces us to be involved in the problem of the role of a teacher. Teacher is a guide, is an inspirer, is a monitor, is a friend, is a second mother, and is a mentor, who teaches simple, but timeless and good values. And M. Loudon was succeeded in paying tribute to an inspirational teacher and created a hymn to a teacher.

How to Write a Classification Essay †The Quick and Easy Way by BestEssay.education

How to Write a Classification Essay – The Quick and Easy Way Writing  a Classification Essay Did you watch Sesame Street as a child? If you did, you probably remember the refrain, â€Å"One of these things is not like the other...', often sung by a memorable character like Susan or Luis. The activity accompanying that song was to look at four objects, and then identify which three belonged together. The fourth object was then the one that didn't belong. This may seem like a simple task now, but you were learning the very skills then that you will need to write a division and classification essay today. Later on, in school, you probably expanded on this skill. For example, you may have learned to classify musical instruments by category (brass, percussion, string, woodwind), events according to historical period (Middle ages, Great Depression, Baby Boom, Industrial Revolution), or even types of art (impressionist, modern, arts and crafts, etc.). What is a Classification Essay A classification essay is paper in which you identify a subject and create different categories within that subject that you can use for the purposes of classification. Then, you write about who or what would be placed into each classification, and why. For example, if your subject was pies, you might choose the categories: savory, fruit based, custard based, cream based, and chess based. In your essay, you would identify these categories, explain why you have selected these categories, and then you would write about which pies fit into the various categories. Remember that as you are writing a classification essay, you job isn't just to identify the categories and what goes in those categories, it is also to justify why you have made that selection. Why, for example, would strawberry cream pie be classified as a cream based pie and not a fruit pie? Choose an Interesting and Familiar Subject If you want the essay writing process to go quickly, pick a subject that you can quickly divide into categories. Then, once you have your categories down, you can pick the elements you wish to write about and how you want those elements classified based on the categories that you have established. Unless the subject matter covered in the class demands it, there is no need to pursue a topic that is particularly intense. Write an Intro Paragraph that Demonstrates the Subject and Categories By the end of the first paragraph, your reader should know how you have divided your subject into categories, and why. This way, when you begin writing your body paragraphs, you can simply go through each item and discuss where you are classifying it and what caused you to make that decision. Try Some Mind Mapping Rather than using typical note taking methods, try using mind mapping or other methods to do your classifying. The visual style of this can make it easier for you to remember what you classified where, and why. Then, when the time comes to write your essay, you can just translate the images that you have created into sentences and paragraphs.

The History of Pencils, Markers, Pens, and Erasers

The History of Pencils, Markers, Pens, and Erasers Ever wonder how your favorite writing implement was invented? Read on to learn about the history of pencils, erasers, sharpeners, markers, highlighters and gel pens and see who invented and patented these writing instruments. Pencil History Graphite is a form of carbon, first discovered in the Seathwaite Valley on the side of the mountain Seathwaite Fell in Borrowdale, near Keswick, England, sometime around 1564 by an unknown person. Shortly after this, the first pencils were made in the same area. The breakthrough in pencil technology came when French chemist Nicolas Conte developed and patented the process used to make pencils in 1795. He used a mixture of clay and graphite that was fired before it was put in a wooden case. The pencils he made were cylindrical with a slot. The square lead was glued into the slot, and a thin strip of wood was used to fill the rest of the slot. Pencils got their name from the old English word meaning brush. Contes method of kiln firing powdered graphite and clay allowed pencils to be made to any hardness or softness - which was very important to artists and draftsmen. In 1861, Eberhard Faber built the first pencil factory in the United States in New York City. Eraser History Charles Marie de la Condamine, a French scientist and explorer, was the first European to bring back the natural substance called India rubber. He brought a sample to the Institute de France in Paris in 1736. South American Indian tribes used rubber to making bouncing playing balls and as an adhesive for attaching feathers and other objects to their bodies. In 1770, the noted scientist Sir Joseph Priestley (discoverer of oxygen) recorded the following, I have seen a substance excellently adapted to the purpose of wiping from paper the mark of black lead pencil. Europeans were rubbing out pencil marks with the small cubes of rubber, the substance that Condamine had brought to Europe from South America. They called their erasers peaux de negres. However, rubber was not an easy substance to work with because it went bad very easily - just like food, rubber would rot. English engineer Edward Naime is also credited with the creation of the first eraser in 1770. Before rubber, breadcrumbs had been used to erase pencil marks. Naime claims he accidentally picked up a piece of rubber instead of his lump of bread and discovered the possibilities. He went on to sell the new rubbing out devices, or rubbers. In 1839, Charles Goodyear discovered a way to cure rubber and make it a lasting and useable material. He called his process vulcanization, after Vulcan, the Roman god of fire. Goodyear patented his process in 1844. With the better rubber available, erasers became quite common. The first patent for attaching an eraser to a pencil was issued in 1858 to a man from Philadelphia named Hyman Lipman. This patent was later held to be invalid because it was merely the combination of two things, without a new use. History of the Pencil Sharpener At first, penknives were used to sharpen pencils. They got their name from the fact that they were first used to shape feather quills used as early pens. In 1828, French mathematician Bernard Lassimone applied for a patent (French patent #2444) on an invention to sharpen pencils. However, it was not until 1847 that Therry des Estwaux first invented the manual pencil sharpener as we know it. John Lee Love of Fall River, Massachusetts designed the Love Sharpener. Loves invention was the very simple, portable pencil sharpener that many artists use. The pencil is put into the opening of the sharpener and rotated by hand, and the shavings stay inside the sharpener. Loves sharpener was patented on November 23, 1897 (U.S. Patent # 594,114). Four years earlier, Love created and patented his first invention, the Plasterers Hawk. This device, which is still used today, is a flat square piece of board made of wood or metal, upon which plaster or mortar was placed and then spread by plasterers or masons. This was patented on July 9, 1895. One source claims that the Hammacher Schlemmer Company of New York offered the worlds first electric pencil sharpener designed by Raymond Loewy, sometime in the early 1940s. History of Markers and Highlighters The first marker was probably the felt tip marker, created in the 1940s. It was mainly used for labeling and artistic applications. In 1952, Sidney Rosenthal began marketing his Magic Marker which consisted of a glass bottle that held ink and a wool felt wick. By 1958, marker use was becoming common, and people used it for lettering, labeling, marking packages, and creating posters. Highlighters and fine-line markers were first seen in the 1970s. Permanent markers also became available around this time. Superfine-points and dry erase markers gained popularity in the 1990s. The modern fiber tip pen was invented by Yukio Horie of the Tokyo Stationery Company, Japan in 1962. The Avery Dennison Corporation trademarked Hi-Liter ® and Marks-A-Lot ® in the early 90s. The Hi-Liter ® pen, commonly known as a highlighter, is a marking pen which overlays a printed word with a transparent color, leaving it legible and emphasized. In 1991 Binney Smith introduced a redesigned Magic Marker line that included highlighters and permanent markers.  In 1996, fine point Magic Marker II DryErase markers were introduced for detailed writing and drawing on  whiteboards, dry erase boards, and glass surfaces. Gel Pens Gel Pens were invented by the Sakura Color Products Corp. (Osaka, Japan), which makes Gelly Roll pens and was the company that invented gel ink in 1984. The gel ink uses pigments suspended in a water-soluble polymer matrix. They are not transparent like conventional inks, according to Debra A. Schwartz. According to Sakura, Years of research resulted in the 1982 introduction of Pigma ®, the first water-based pigment ink ... Sakuras revolutionary Pigma inks evolved to become the first Gel Ink Rollerball launched as the Gelly Roll pen in 1984. Sakura also invented a new drawing material which combined oil and pigment. CRAY-PAS ®, the first oil pastel, was introduced in 1925.

Advertising language Research Paper Example | Topics and Well Written Essays - 1000 words

Advertising language - Research Paper Example This essay "Advertising language" outlines the importance of the language in advertising in order to achieve the objectives of an advertisement. An advertiser, on most occasions will try to develop an advertising message that has the capability of attracting the attention and interest of the target customer. One of the major characteristics of an advertising language is the use of simple words to pass the message. As noted earlier, one of the major functions of an advertisement is providing information for purposes of attracting customers, and exploiting the market under consideration (Lescano, 2930). On this basis, a simple type of advertisement is required for purposes of arousing the interest and attention of the audience under consideration. This simple advertisement will also make it possible for the target market to easily remember the message passed. On this note, the use of a simple language will achieve this objective. Lescano (2930) further goes on to denote that in develop ing a simple language, the first step an advertiser has to conduct is to use oral and popular language. The second step in this process is the use of few letters, as well as single syllable words to develop a message. The following is an example of a an advertisement for a microwave oven developed by use of simple English (Lescano, 2930), â€Å"It was impossible to believe it., Until I gave it a try., I am totally impressed., You gotta have to try it, You will love it† Looking at the words in this advertisement, we can denote that they are oral, and very simple.

International manegment Essay Example | Topics and Well Written Essays - 250 words

International manegment - Essay Example Silverlight Electronics in Korea has a different business operation approach from Cobalt. The two companies operate in different business and cultural environments. Therefore, negotiation has to address the conflict situation between the two companies. Secondly, the two companies have their potential power in business, which must be respected for a negotiation to be realized. Finally, the concept of options was addressed in the negotiation. Both companies have business options that may be utilized. Actually, I present new and better business options to Silverlight electronics by presenting my proposals to them. I have learned a lot from this negotiation. The most important learning is that all options in a negotiation have to be exhausted. By understanding the needs and expectations of the other company, I can present better business options to them and therefore, arrive at a negotiation more quickly. I will use this concept in my future negotiation with people and businesses