Current issue in government contract Essay Example for Free

Current issue in government contract Essay The issue is focus on the financial aspect in the company operations. The law is so strict enough in the budget allocated for any accounts which are voluntary. Below is the issue accordingly; auditing the companys accounts on a voluntarily basis: â€Å"A request from the Secretary General of the Department of Finance to audit, the annual accounts of Campus and Stadium Ireland Development Ltd. I agreed to audit the companys accounts on a voluntary basis pending the enactment of legislation to put the company and its operations on a statutory footing. The audit, which was completed in June 2001, covered a period from the date it commenced operations on December 10, 1999 to the end of the year 2000. Almost ? 2 million was allocated from the Department of the Taoiseachs Vote to meet the costs of the company in the initial period. The committee will see from the accounts that something around ? 560,000 of that went to fitting out the offices which were rented in Blanchard town, ? 400,000 went to pay for executive services for the last four months of the year 2000 and ? 313,000 or so went on consultants fees (Purcell. http://www. irlgov. ie)†. Corporate governance arrangements, tendering for executive services, fee levels for executive services, credit card expenses and the tax status of the company. I can expand on the specific issues during the course of the examination if the committee so wishes. The main activities of the company during the period of the accounts were developing an architectural and environmental scheme for the company, devising the structure of a competition for the provision of the various facilities on the site and latterly organizing a competition for the provision. In my own opinion of the issue, I could rather say, if the provision issue provides the enhancement of the development of the company’s progress then it is so much advice able to adopt the audit more profoundly. Then continuous monitoring of the results of the issue to the point of view of the rest of the people concerned to either it resulted to a positive outcomes or not. If it has positive outcomes then it would be better to enhance such auditing issue just for the good of the company and all the concern as well. Other Issues â€Å" 1.) A persons children or other lineal descendants such as grandchildren and great-grandchildren, it does not mean all heirs, but only the direct bloodline. Occasionally, there is a problem in determining whether a writer of a will or deed meant issue to include descendants beyond his or her immediate children. While a child or children are alive, issue refers only to them, but if they are deceased then it will apply to the next generation unless there is language in the document which shows it specifically does not apply to them. This issues looks unfair to the new generation to which no how on how comes they are a part of the problem for infact they just come in existing. 2) n. any matter of dispute in a legal controversy or lawsuit, very commonly used in such phrases as the legal issues are, the factual issues are, this is an issue which the judge must decide, or please, counsel, let us know what issues you have agreed upon. In these issues, as long as it is following the legalities it has to be abided. The judge is the one to promulgate laws that was agreed upon standards. So if it is in my case I don’t need to argue at all though it hurts to accept facts but facts must prevail. 3) v. to send out, promulgate, publish or make the original distribution, such as a corporation selling and distributing shares of stock to its initial investors. I will rather agree to this statement, this is for the reason of visibility to everybody of what was going on the promulgation. There should be participation to everybody’s concern. 4) n. the shares of stock or bonds of a corporation which have been sold and distributed (â€Å"Issue†. http://legal-dictionary. thefreedictionary. com)†. A Problem in Contracts Assurance contracts are a financial technology that facilitates the private creation of public goods and Club goods in the face of the free rider problem. The free rider problem is that there may be actions that would benefit a large group of people, but once the action is taken, there is no way to exclude those who did not pay for the action from the benefits. This leads to a game theoretic problem: all members of a group might be better off if an action was taken, and the members of the group contributed to the cost of the action, but many members of the group may make the perfectly rational decision to let others pay for it, then reap the benefits for free, possibly with the result that no action is taken. The result of this rational game play is lower utility for everyone. â€Å"Assurance contracts operate as follows: In a binding way, members of a group pledge to contribute to action an at least N-1 other members also make the same pledge. If N members sign the pledge (perhaps by a certain expiration date), the action is taken. If the quorum is not reached, the parties are not bound to carry through the action (â€Å"Assurance Contract†. http://en. wikipedia. org)†. â€Å"The binding mechanism may be a contract enforced by a government, a contract enforced by a private organization (e. g. a mediator, a protection agency in an anarcho-capitalist society, etc. ), an escrow organization (in such cases, the binding contract is signed by depositing funds in advance, which are later either disbursed according to the contract, or refunded), etc. Many economists argued that the central planning and bureaucratic directions are necessary to produce public goods. There is at least some types of public good can be produced privately by profit seeking entrepreneurs. A new and more powerful form of assurance contract and discusses, without making rigorous is called a dominant assurance contract. This was contracts that exhibit on the goods or product. There are two problems involved in the production of public goods, the preference revelation problem and the contribution problem. One focus we have for sure is on the contribution problem, how to get agents voluntarily contribute to providing the public good. This will limit the analysis of good, which naturally comes in lumpy quantities, or goods for which we can deduce into an efficient size. If a bridge or road or light house is to built we can probably estimate the efficient size from the information about preferences and technology (Tabarrok, Alexander. March 6, 1996. http://mason. gmu. edu)†. Under this issue we can include the government contracts which were brought to news for publicly seen. A recent decision by the Bankruptcy Court for the Eastern District of Virginia has potentially momentous consequences for bankrupt government contractors and their creditors. â€Å"That court, with jurisdiction over the Virginia suburbs of Washington, D. C. , the primary place of business for many government contractors, has held that the debtor/contractor filing for reorganization of the Bankruptcy Code is not automatically entitled to continue performing its federal contracts. Instead, the government can obtain permission from the bankruptcy court to immediately terminate such contracts (Government Contracts. 1999. http://www. hklaw. com)†. This decision may result in contractor being forced into liquidation proceedings, with little remaining for its creditors. In my own opinion it is inhuman to say getting all proceeding of the debtor on which nothing left for her living. This means that, the same saying killing the debtor for not paying all the debts. It’s too much contract not giving any pardon to debtor itself. If I were to judge I have to see to it that I can make adjustment prior to both the company and the debtor. There must be equal distribution. Government Contract Commitment to the client and the promise of innovative solutions is the core of Government Contracts Consultants. Government Contracts Consultants is organized as a small woman-owned, SBA certified HUB Zone company organized to meet the ever-growing needs of business by providing creative information technology, administrative and acquisition management support services and training to government and commercial clients. Our areas of expertise included. â€Å"M3 Federal Contract Practice Group, LLC. (M3) works on behalf of Prime contractors, Subcontractors, and International companies doing business with the U. S. Government. M3 is a highly recognized U. S. Government contract consultant firm comprised of subject matter experts that focus on and comprehend every element of the federal procurement field from business development, writing winning proposals, contract management, contract closeout, and claim resolution. M3 Federal is the only company within the federal procurement field that provides an all encompassing teaming solution for any company willing to get into the federal procurement field or that has been in the federal field and has complex procurement issues to resolve. M3 Federal Contract Practice Group specializes in all areas of government contracting and federal procurement including (â€Å"M3 Federal Contract†. http://www. m3federal. com): †¢ Contract Claims †¢ Preparation †¢ Submittal †¢ Resolution †¢ Audits †¢ Qui Tam Actions †¢ Fraud †¢ Bid Protests †¢ Proposal Development DoD Facility Clearances †¢ DoD Personnel Clearances †¢ Intellectual Property Rights †¢ Export Regulation Compliance †¢ Commercial Contracts †¢ Joint Ventures/Teaming Agreements †¢ Contract Administration †¢ GSA Schedules This are all gives us the background of what covers the entire contract. The overview of this contact will focus on business. Business will be better off if it follows a standard to avail. Conclusion: We have dealt with five issues that differ in many ways. Issues has an act by the Government that goes beyond the terms of a Fixed Price Contract, Cost Type, Cost Plus Award Fee, Research Development Contract, etc. or any contract termination that has a consequential ripple effect upon the entire contract and/or Contractor, impose a substantial risk to the Contractor and require immediate action by the Contractor to ensure no financial denigration to reputation. In the sense of Government contract it is legal and purposely design to make progress not only the company but also the people at large. It is properly impose so that everybody will understand the agreement agreed upon. But in the case of problem issues it is focusing more often to the people who have not agreed to to their previous contract or might be things they fail to do and the other parties tends to claim and will sewed the debtor for example. Also problems sometimes will come out to be in the case of agreement which was not abided. If I will to make sure that agreement should complied I have see to it , that my opponents could make a written not just verbal agreement to whom I can claim even if problem arise. Reference â€Å"Assurance Contract†. http://en. wikipedia. org/wiki/Assurance_contracts â€Å"Issue†. http://legal-dictionary. thefreedictionary. com/issue Government Contracts. 1999. http://www. hklaw. com/Publications/newsletters. asp? ID=70)† â€Å"M3 Federal Contract†. http://www. m3federal. com Purcell. http://www. irlgov. ie/committees-02/c-publicaccounts/020321/Page1. htm Tabarrok, Alexander. March 6, 1996. http://mason. gmu. edu/~atabarro/PrivateProvision. pdf Sovereign acts by the Government, such as dictating to the Contractor, orally or through un-priced or unsigned modifications are a manifestation that you are working to defective specifications and/or performing added scope work. If any of the following conditions apply to your contract, you may be experiencing lost funds and may be entitled to additional mo whether or not the end item meets contract requirements. Any change in this methodology, not covered by a modification, is a delay to the contract and in many cases is considered added scope work entitling the Contractor to be monetarily Contractor must be aware that a rejection, not supported by a specific contract citation is improper, and that a Contractor is not obligated to perform the work until a citation is given or a modification is made to the contract.

The rate of photosynthesis in the elodea Essay Example for Free

The rate of photosynthesis in the elodea Essay Put the boiling tube in a beaker surrounded by ice. Ensure the thermometer is standing upright in the beaker.   Note the initial temperature and maintain this throughout the experiment, either by means of adding or reducing the ice content.   Place the electric bench lamp towards the elodea specimen   Allow the elodea specimen to settle for five minutes or so.   On the fifth minute start timing for a further five minutes and count the amount of bubbles observed. Note: The same procedure must be carried out for the other two experiments, only altering the content outside the boiling tube. In order to keep the water temperature at 45o C, it is advised that cool water or some heated water (from the kettle) is added depending on the temperature observed. Prediction: I predict that when the elodea specimen is placed in ice, a few (one or two) oxygen bubbles will be observed, therefore photosynthesis will be limited. When the elodea specimen is placed in water at 45o C, more bubbles will be seen and hence the rate of photosynthesis will increase At room temperature, some bubbles will be seen but much less compared to the 45o C investigation, since the temperature is in between. Results: Ice: Time (minutes). Number of bubbles observed 1 1 2 1 3 3 4 0 5 0 Total: 5 Water maintained at 45o C: Time (minutes) Number of bubbles observed 1 3 2 10 3 12 4 3 5 1 Total: 29 Water at room temperature (tap water): Time (minutes) Number of bubbles observed 1 0 2 2 3 3 4 3 5 3 Total: 11 Discussion: From looking at my results, it appears to be that my prediction is reasonably accurate. As mentioned in my prediction, a few bubbles were observed when the elodea was placed in ice. This is because the cells within the elodea specimen eventually die. This can be explained by the concept of enzymes, which operate best at optimum temperatures. Placing the elodea in a cold environment, such as ice means that the temperature is extremely below the optimum. This inevitable leads to enzyme denaturation and only some bubbles are seen during the first two minutes prior to the denaturation. Consequently, there is some photosynthesis taking place. When the elodea cell is placed in water which is maintained at 45o C, the number of bubbles sighted increase rapidly (particularly in the second and third minutes). Notice for the fourth and the fifth minutes, the number of bubbles observed start to decline. This may well be to the fact that the temperature was not controlled as intended, and possibly exceeded 45o C, thus causing the enzyme to denature. Hence a decrease in photosynthesis is observed. When the elodea specimen is placed in water at room temperature, the number of bubbles observed are more or less the same. This is because the temperature of the water is fairly below the optimum, (which is believed to be 45o C) and therefore the rate of photosynthesis is limited. Evaluation: Despite the results fairly matching the prediction, the method used is rather unreliable. More repeats (i.e. three repeats) could have been put into practice as this would have allowed me to calculate an average and hence raising the reliability of the results. The temperature range is rather limited and so the results would have been more accurate by employing a variety of temperatures. This would have allowed me to pin-point exactly the optimum temperature of the enzyme, which is involved in photolysis. Looking at the results above, there was an incidence where the temperature was not properly controlled (the ice investigation in which 3 bubbles were noted in the third minute). I believe using a water bath would have allowed me to maintain the temperatures more precisely and save time as oppose to using a kettle. I recall whilst doing the experiment that the elodea specimen was placed somewhat close to the window. Light from the sun could have also played an important part of distorting the results because an increase in light intensity also contributes to an increase rate in photosynthesis. Therefore if this experiment is to be carried out again, it would be ideal to make use of the window blinds. Not forgetting to mention that the distance between the bench lamp and the elodea specimen was not fixed, and was varied during each investigation. This might have caused a slight degree of anomaly in the results. Having acknowledged this inconsistency has made me aware of what is required in the actual investigation. It can be argued that counting the number of bubbles can be deceiving and therefore another method should be put into consideration. An alternative way of doing the same experiment more accurately can be achieved by using a photosynthometer. A freshly cut strand of the plant is suspended upside down in a boiling tube. The healthy strand of elodea produces bubbles of oxygen gas when brightly illuminated (i. e. with a bench lamp 10 cm away from the elodea specimen) at different temperatures. The bubbles emerge from the cut end of the stem and are collected in a bulb at the base of the apparatus. From here, the oxygen gas can be drawn into the capillary tube by means of the syringe. The volume of oxygen gas collected in five minutes gives a direct measurement of the rate photosynthesis. Apparatus and Justification: Apparatus Justification of Apparatus x1 Clamp stand (with capillary tube). A lot of apparatus are involved, some of which that need to be held at a constant height above the water bath (i. e. the boiling tube with the elodea specimen). x1 Capillary tube with ruler.   Used to measure the length of the oxygen bubble(s).   Hence the volume of oxygen can be calculated. x1 Boiling tube   The use of a boiling tube is necessary as oppose to a test tube because its large enough to allow the elodea specimen to fit in with ease. x1 Elodea Canadensis specimen (10 cm long)   The elodea specimen is the basis for this investigation.   Allows the hypothesis to be tested. x1 5 ml syringe A 5 ml syringe is necessary to allow oxygen bubbles to be drawn in the capillary tube. No other apparatus can be substituted for this task. x1 30 cm Ruler   Used to measure the length of the elodea specimen, making sure that the length is constant for each investigation. To ensure a fair test. x1 Scalpel Used to cut the elodea specimen to the desired length with precision. x1 Plastic Tile   To aid in cutting the elodea specimen. To prevent any damage to the work bench. x1 Electric bench lamp with 100W filament bulb   Used to ensure a fair test as every investigation will be illuminated by a lamp at a set distance. To ensure the results are not influenced by light intensity but solely the temperature. x1 Thermometer   Used to ensure the temperature of water bath is correct, and hence to promote reliability of results. x1 Stopwatch   Used for timing the investigation for 10 minutes (five minutes for the settling of the elodea specimen and another five minutes for the investigation). x1 Beaker and ice blocks   To be used for the 0o C investigation.   To see if there is any photosynthesis evident at freezing level. Proposed Method: Diagram12: 1. Set up the clamp stand as shown above. 2. Get hold of a plastic tile and a scalpel and cut the elodea specimen at a length of 10 cm. 3. The cut end has to be inserted into the calibrated capillary tube as shown above. 4. Lower the capillary tube into the water bath, ensuring half of the boiling tube (containing the elodea specimen) is immersed in the water. 5. Place the bench lamp 10 cm away from the boiling tube. Ensure the light is directly facing the elodea specimen. 6. After setting all the apparatus up, pull the syringe on top of the capillary tube in order for the water to get into the capillary tube. This removes any air bubbles initially present in the capillary tube. 7. Place the thermometer into the water bath (or beaker in the case of the ice investigation) and turn the light on. The elodea must be allowed to settle for five minutes. 8. Time the investigation for a further five minutes by using a stopwatch. 9. On completion of the five minutes, switch the lamp off and remove the clamp stand along with the rest of the apparatus out of the water bath. 10. Pull the syringe to draw the oxygen bubbles into the capillary tube and measure the length of the bubble(s) simultaneously by making use of the ruler. 11. Note down the length of the bubble(s) on paper. 12. Repeat the same procedure three times for each temperature using the same elodea specimen. 13. Once the three trials are complete, move on to the next temperature. and carry out steps 1 -13 Ice investigation:   Get hold of the elodea specimen and place it in the boiling tube.   Put the boiling tube in a beaker surrounded by ice.   Note the initial temperature and maintain this throughout the experiment, either by means of adding or reducing the ice content.   Follow steps 5-13 above. Note: If an anomalous result is encounter during the duration of the experiment, it is advised to do that particular investigation again. Acknowledgements: 12- Diagram modified from A-Level biology Revised Edition by W D Phillips and T J Chilton, page 69. Analysis of Variables: Independent variable: The independent variable is the variable, which has to be manipulated in order to get the desired results. In this case, the independent variable is the temperature of the water baths. To obtain more accurate results, I have included temperature readings ranging from 0-65o C, in intervals of five. Three readings will be taken for each temperature and compared. Dependent variable: This is the variable which responds to the fixed conditions and which is used to test the hypothesis. In this case, the dependent variable is the volume of oxygen released by the elodea specimen. The length of the oxygen bubble(s) is going to be measured at the end of the five minute interval. This can be used to deduct the volume of oxygen produced by multiplying the length of the bubble(s) by pie, which is then multiplied by 0. 82 Fixed variables: These are variables, which have to be kept constant throughout the experiment in order to obtain accurate results. These variables cannot be manipulated at any time of the experiment. Some of the fixed variables are listed below: The light intensity (distance between the bench lamp and the elodea specimen): This can be kept constant by ensuring the elodea specimen is 10 cm away from the bench lamp. It may well be convenient reassure the distance with a ruler. The preliminary work I did have done has highlighted that 10 cm happens to be an ideal distance for sufficient photosynthesis to be followed and thus reliable results can be obtained. However if the distance between the bench lamp and elodea specimen is shorter than 10 cm, then this will have a major impact on the results. The increase in light intensity shall inevitably results in an increase in the volume of oxygen noted and thus distorting the results. Similarly if the distance is greater than 10 cm, then this decrease in light intensity shall contribute to a decrease in rate of photosynthesis and thence slowing down the rate at which the oxygen bubble(s) are released13. Therefore it is vital that this distance is kept constant throughout the experiment to ensure a fair test. * The number of leaves on the Elodea plant: The number of leaves will be kept constant throughout the whole experiment by using the same elodea specimen. The reason for keeping the same number of leaves is to ensure that the surface area provided by the leaves is the same in each investigation. Having the same number of leaves will provide the same surface area. If the number of leaves were different in each new investigation, then the number of leaves would be the independent variable. The more leaves there are the larger the surface area, and more light energy will be trapped by the leaves and a greater proportion of it will be converted into chemical energy14. Therefore more oxygen will be given off. On the other hand, a fewer amount of leaves shall results in a low yield of oxygen. In both cases, the results will be distorted if not controlled. Acknowledgements: 13- Letts Revise A2 Biology by John Parker, page 26 14- Revise A2 biology by Richard Fosbery and Jennifer Gregory; page 21 Reliability: To obtain more reliable results, three measurements would be taken in the same condition. The reason for this is that if in case, an error was made on the first attempt, the error can be amended and on the second attempt. After doing the experiment, if any of the results are anomalous then the experiment should be repeated. Results obtained can be compared to the previous results to see if there is an agreement. Light from the sun can also play an important part of distorting the results because an increase in light intensity also contributes to an increase rate in photosynthesis. Therefore it would be ideal to make use of the window blinds to promote reliability of results. Temperatures are monitored precisely by the water baths. However it is sometimes observed that the temperature of the water bath goes up or down by a degree or two. The temperature can be maintained by means of adding or removing ice to the water baths. Due to the limited number of water baths, there may well be the case of sharing a water bath to five others. This means five additional bench lamps would have an impact on my results (as light intensity increases rate of photosynthesis). The lamps may also contribute to the water baths getting hotter than required. Therefore it would be wise to carry out the investigation individually. When the apparatus are set up, the syringe (on top of the capillary tube) must be pulled to draw the water into the capillary tube. This will remove any air bubbles initially present in the capillary tube and thus leaving no ambiguity. Results: Table: showing the results I obtained during the investigation Temperature (o C) Length of Oxygen bubble (mm) Volume of Oxygen (mm) Rate of photosynthesis (mm3/min) Average rate of photosynthesis (mm3/min).

Cognitive Network Security

Cognitive Network Security Introduction: The rapid development of various communication and wireless technologies had led to ultimate spectrum insufficiency. This may cause a great spectrum extinction thereby not allowing new wireless services to be installed. To overcome this great spectrum disaster and to optimally use the underutilized bands, a new technology so called cognitiveradio evolved. This technology scampers the software programs thereby helps cognitive user to look for spectrum holes, pick the best among them, work jointly in coordination with other users and do not disturb the owner of spectrum on arrival[1].The members do stay connected in an ad-hoc manner and there is no guaranteed network architecture. This makes the privacy issues more intricate than in conventional wireless devices. [2]. The medium of transport is free air, any adulteration of data can be done without much being noticed by the sufferer and at the worst case, the data signals are even jammed. Establishing security in these networks is a ri sky task because of its inimitable quality. [4] The innate temperament of it has made it an open play ground for attackers. There are four layers in a cognitive network out of which Physical layer is the lowermost layer and various attacks are feasible here .The main focus is on attacks in these layers since it is the common layer and has same compatibility with all other devices. The rapid development of technology has led to a new attack so called Primary User Emulation Attack wherein the imitation of spiteful user as a primary transmitter occurs to deceive the secondary users and gain access over the white space. Better functioning of the Cognitive network is affected to a great extent if this Primary User Emulation Attack is severe.[3]Earlier methods and the most primitive are cyclostationary and the energy detection ones [11]. The first technique is based on the fact that the signals from primary users are periodic and do have regular cyclostationarity property. The second method involves comparison of energy level of the signal with a preset threshold. [10].These methods are already bypassed owing to the rapid growth of technology. It can be done either by impersonating the primary transmitted signal or high power signal to confuse the energy detector [9]. Thus to avoid the problem of PUEA, we need a trustable method to verify the arrival of primary user .One such method is verification of licensed user by means of biased reaction signalling[6]. The other technique involves LocDef , where we use localization technique by non interactive technique [7]. We can also use Public encryption systems thereby ensuring the trustworthy communication[5]. Primary user has a closely placed helper node which plays the role of a bridge thereby enabling of the verification of the primary user’s signals using cryptographic signatures and authentic link signatures.[8].There are hand off techniques meant for secret communication of sharing session keys between the client and the router [12]. We do add the tag for authentication in a transparent way so as no to interfere with the primary receiver but still maintain authenticity with the cognitive user. We can add this tag in parity bits of the codeword or in the modulation scheme .[13].But to make this signature embedding accurate, error control codes like convolutional codes, turbo codes or alamauti codes can be used. .A convolutional encoder is a linear predetermined-state device with n algebraic function generators and K stage shift register. The binary input data, is shifted as b bits at a time along the registers. Decoding can be done by either sequential decoding, maximum likelihood or feedback decoding[15]. In case of turbo codes, two RSC elementary codes are in a parallel organization. Maximum A Posteriori algorithm is used for decoding it in iterative process[16].In a highly noisy environments single error control codes do not have high coding gain. In order to improve this concatenated codes are preferred.[14] H ence to cope up with the FCC regulations, we proposed a method in which the authentication tag is embedded onto the data signal by the helper node after encoding and the comparative study of which concatenated codes serve the best to reduce the bit error rate has been discussed. II. PROPOSED METHOD: 2.1)HASH ALGORITHM: Procedure: Message is Padded in such a way that the length of message matches to 896 modulo 1024 . In certain cases ,the length may match yet the padding becomes additional. We do add a binary bit 1 followed by binary 0s to make the desired length. Depending upon the actual message size, we may have n number of bits padded where n=1 to 1024.We do assume that the message after padding is an unsigned integer of 128 bits and output of earlier two steps is a 1024 bit integer in order to calculate the length of message. Eight registers each of capacity to hold 64 bits (p, q, r, s, t, u, v, w) are needed to grasp the 512 bit results momentarily .This 512 bit output is carried over as an input to the consecutive stages. For the first stage, the previously stored transitional hash output is taken. On processing the padded message of 1024 bits, we get 64 bit as input per round. So to maintain the security and avoid repetitions, we do use a constant to point to the round number out of 80.After completion of 80 rounds, the final stage result is fed back to the first block until the message gets over. Thus we need (Oi-1) to produce Oi where I is the stage number. 2.2)METHOD OF EMBEDDING: We assume that the primary transmitter and the helper node share almost the same geological location and the helper node has a secret communication with the secondary users there. The primary transmitter on arrival generally transmits a data signal to its intended primary receiver. Since the primary transmitter has the highest priority and in no way it should be interfered we use the helper node to embed this security tag. The primary transmitter encodes the data sequence, modulates and transmits the signal. The data sequence after encoding is modulated and being transmitted by the primary transmitter. The helper node here repeats the signal and the hashed output is being embedded by it .Here the embedding is done in such a way that the tag to data ratio is comparatively low. Encode the data sequence to form N code words and each codeword contains p bits. We get an authentication tag by splitting the hash function output obtained earlier into p bit blocks. The tag thus obtained is su bstituted in the place of first p bits of the total N code words obtained. We do obey the regulations as per FCC since this tag embedding task is solely performed by the helper node. At the receiver end the authentication tag is retrieved and checked for authenticity. This tag verification is being done by the Cognitive Radio user upon reception since we did assume that the key for hash had been exchanged privately earlier. If verification is successful, the task is suspended and secondary user looks for any new white space. BLOCK DIAGRAM: RESULTS AND DISCUSSION: BER VALUES FOR CONVOLUTIONAL CODES: BER VALUES FOR TURBO CONVOLUTIONAL CODES: BER VALUES FOR CONVOLUTIONAL-ALAMOUTI CODES: BER VALUES FOR TURBO-ALAMOUTI CODES: REFERENCES: O. Leà ³n ,Hernà ¡ndez-Serrano, J.,Soriano, M.,. Securingcognitiveradionetworks, International Journal of Communication Systems,23: 633-652. May 2010 Parvin, S.,Han, S.,Tian, B.,Hussain, F.K, Trust-based authentication for secure communication inCognitiveRadioNetworks,International Conference on Embedded and Ubiquitous Computing, Hong Kong; China;,pp. 589-596. December 2010. Zhang, C.,Yu, R.,Zhang, Y., Performance analysis of Primary User Emulation Attack inCognitiveRadionetworks,International Wireless Communications and Mobile Computing Conference,pp.371-376. August 2012. Parvin, S.,Hussain, F.K.,Hussain, O.K.,Han, S.,Tian, B.,Chang, E., Cognitiveradionetworksecurity: A survey ,Journal of Network and Computer Applications, 35: 1691-1708. November 2012. Parvin, S.,Hussain, F.K.,Hussain, O.K, Digital signature-basedauthenticationframework incognitiveradionetworks, International Conference on Advances in Mobile Computing and Multimedia,pp.136-142. December 2012. Kumar, V.,Park, J.M.,Kim, J.,Aziz, A., Physical layerauthenticationusing controlled inter symbol interference, International Symposium on Dynamic Spectrum Access Networks,pp. 286. October 2012. Ruiliang Chen, Jung-Min Park, and Jeffrey H. Reed,Defense against Primary User Emulation Attacks in Cognitive Radio Networks,IEEE transactions on Selected areas in communication,26:25-37. January 2008. Tingting Jiang., Huacheng Zeng., Qiben Yan., Wenjing Lou.,Thomas Hou,Y, On the Limitation of Embedding Cryptographic Signature for Primary Transmitter Authentication, IEEE transactions on Wireless communication letters,1:324-327. August 2012. Chen,R.,Park,J.,Reed,J.H, Defense against primary user emulation attacks in cognitive radio networks, IEEE transactions on Selected Areas in Communications, 26:25–37. 2008. Liu,Y.,Ning,P., Dai,H, Authenticating primary users’ signals in cognitive radio networks via integrated cryptographic radio networks via integrated cryptographic and wireless link signatures,IEEE Symp. on Security and Privacy, pp. 286–301. 2010. Kim,H.,Shin,K.G, In-band spectrum sensing in cognitive radio networks: energy detection or feature detection? ,ACM international conference on Mobile computing and networking, pp.14-25. 2008. He, Y.,Xu, L.,Wu, W., A local joint fast handoff scheme incognitivewireless mesh networks , IEEE transactions on Security and Communication Networks, 7:455-465. February 2014. Xi Tan., Kapil Borle., Wenliang Du., Biao Chen, Cryptographic Link Signatures for Spectrum Usage Authentication in Cognitive Radio, ACM conference on Wireless network security,pp.79-90.2011. Avila, J.,Thenmozhi, K, DWT highlighted concatenated multi band orthogonal frequency division multiplexing (MB-OFDM)-upgraded enactment, International Journal of Engineering and Technology,5:2155-2162. June 2013. Andrew J. Viterbi, Convolutional Codes and ’Their Performance in Communication Systems , IEEE transactions on Communication Technology,19:751-772. October 1971. Claude Berrou., Alain Glavieux ,Near optimum error correcting coding and decoding-turbo codes,IEEE Transactions on communications,44:1261-1271. October 1996 Wang,X.,Wu,Y.,Caron,B, Transmitter identification using embedded pseudo random sequences, IEEE Transactions on Broadcasting,3:244-252. September 2004. Danev,B.,Luecken,H.,Capkun,Z.,Defrawy,K.E,Attacks on physical-layer identification,ACM Conference on Wireless Network Security,pp.89-97. 2010. Proakis,J.G., Salehi,M, Digital Communications.New York, McGraw-Hill, pp. 192, 434, 472-474. 2007. Chen,Z.,Cooklev,T.,Chen,C., Pomalaza-R ´aez,C, Modeling Primary User Emulation Attacks and Defences in Cognitive Radio Networks, International Performance Computing and Communications Conference,pp.208-215. 2009.

Biography Of Ogden Nash :: essays research papers

Biography of Ogden Nash Fredric Ogden Nash was an American humorist who lived from 1902 to 1971. He was born in 1902 in Rye, New York, where he grew up with well educated parents. Microsoft Encarta 95 said that his parents names were Edmund Strudwick Nash and Mattie Nash. During his childhood years, Nash was educated at several private schools. At these schools, he enjoyed writing his own comical and dramatic free verse poems. After graduating out of grammar school, Nash moved on to one of the best private high schools in the east: St. George's in Newport, Rhode Island. Moving on in his life, he enrolled at Harvard at the age of 18 (from 1920-1921). Contemporary American Poets stated that Nash then took a job in the editorial and publicity department at the Doubleday and Doran Publishing Company. He worked very hard at this position, moving up the "executive" ladder very quickly. In only 5 years of work, he became a well-known editor around the publishing business. Nash then realized that his name was known all over the publishing companies; and he started to compose works of free verse. Mindscape Complete Reference Library CD stated that 1931 was the greatest year of Nash's life. In June, he married Frances Rider Leonard of Baltimore, Maryland. Also in 1931, he published two books of free verse: "Hard Lines" and "Free Wheeling." Contemporary American Poets made an interesting statement on these first two books by Nash: "These two books show poetry of remarkable freedom of scansion (rhythm pattern) and uncoventional feelings of thoughts." Contemporary American Poets showed clearly that Nash "paved" the way for authors of free verse with absolutely no pattern. After working on other poetry books such as Happy Days (1933), The Bad Parent's Garden of Verse (1936), and I'm a Stranger Here Myself (1938), Nash retired from his job at Doubleday to focus all of his time on writing free verse. He went on to write many poems, all being free verse. Some were serious, but most of them were humorous. Other examples of his collections include: Good Intentions (1942), Versus (1949), Family Reunion (1950), Parents Keep Out (1951), The Moon Is Shining Bright as Day (1953), The Private Dining Room (1953), You Can't Get There from Here (1957), Everyone but Thee and Me (1962), Marriage Lines (1964), Cruise of the Aardvark (1967), There's Always Another Windmill (1968), and Bed Riddance (1968). Contemporary American Poets also said that Nash appeared in a dozen periodicals and in Hearst's New York Journal.

Fiction vs. Non-fiction Boundaries Essay -- Books Literature fiction T

Fiction vs. Non-fiction Boundaries Blurring the boundaries between Fiction and Non-Fiction has always been a great way for authors to make their points, yield their arguments, and to keep interest. Some may even be inclined to believe that there is not a definite boundary between the areas of fiction and non-fiction. Fiction is often used throughout non-fiction writings as more of a point of view than a character in itself. This voice is not exactly a character in the text, but it still exercises an attitude toward the material to help control the writing.   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"Lola,† by Truman Capote is a great instance where these boundaries are so well mixed, that it becomes hard to tell the difference where one starts and another begins. This story is about a bird named Lola, and the main character. At first, Capote doesn’t like the bird and in fact despises it. However, towards the middle and towards the end of the story, he beings to care for the bird and treat it as a pet. This story does not state very many facts like one would expect throughout a non-fiction account, but rather tells a story like in fiction writing. By doing this, the reader would actually never suspect that the story was in fact non-fiction without being told so. It is a first person account of the events that unfold throughout the story. Capote does a fantastic job of revealing these events and holding the readers attention instead of boring the reader with the strict description, times, and dates such as one would find some non-fiction wri tings. He incorporates humor into the story to help with the excitement of these events. â€Å"The Kerry decided Lola was the latter. He tapped her with his paw. He chased her into a corner. She fought back, pecked his snout; her cawing were coarse and violent as the harshest cures words. It frightened the bulldog;†¦Ã¢â‚¬  This sentence revels some of the intermingling of fiction and non-fiction that Capote utilizes within the account. He is actually giving human characteristics to these animals where the dog â€Å"decides† and the bird begins to â€Å"swear†. Capote does not actually know what these animals are thinking so this is a perfect example of fiction controlling the tempo throughout a non-fiction writing.   Ã‚  Ã‚  Ã‚  Ã‚  The structure of â€Å"Lola† relates strongly to the structure of a fiction story. It includes an introduction, middle, climax, and ending. Similar to ficti... ...ases. The reader does not know if Danny Deever is a real person or just some made up fictional character. The poem actually describes Danny and his death to the reader. â€Å"For they’re done with Danny Deever, you can hear the quickstep play. The regiment’s in column, and they’re marching us away.† These Sentences show how the poem rhymes and yet confuses the reader in the fiction or non-fiction account of the poem. The reader does never really discover what the poem is and this is the exact reason why the author made it this way. To keep the reader guessing and to hold the attention.   Ã‚  Ã‚  Ã‚  Ã‚  Blurring these boundaries between Fiction and Non-Fiction has always been a great way for authors to make their points, yield their arguments, and to keep interest. If authors did not utilize this particular technique, most non-fiction accounts would become boring and uninteresting to a reader who did not want to learn about the particular. It is completely acceptable as long as the readers are told of the fictional aspect of the work. This is not one of the easiest techniques to use but if written correctly, creating a fictional account cannot be considered anything but excellent writing.   Ã‚  Ã‚  Ã‚  Ã‚  

Essay --

World Health Organization (WHO) identified quality as crucial element in its framework for health system strengthening. Quality serves as a mediator between the six system building blocks (leadership, health care financing, health workforce, service delivery, information and medical products) and health outcomes. As such, enhancing quality of each building block could lead to improved health outcomes and efficiency. Several quality improvement (QI) approaches have been widely employed to strengthen the health systems globally. Decision making based on evidence is one of the important QI principles used by many QI models and frameworks such as the European Foundation for Quality Management (EFQM), International Organization for Standardization (ISO), the Baldrige Framework, etc. In order to make more informed decisions, it is necessary to have information about key processes, outputs, outcomes and results. Evidence is one key theme in managing health care quality. The adoption of evidence based practices in health care not only promote high standard of care but also increase client interest in quality of care. This will lead to continuous improvement of overall health system (Sax, 2014). In recent years, the results of many QI projects in developing countries are achieving widespread attention. Noticeable progress in quality could convince donors and governments that their resource are used efficiently and encourage further investment in health care (Leatherman et al., 2010). Thus, there has been growing interest on quality of these QI project results since policy makers, hospital leaders and clinicians make important decisions based on these information. Data Quality Audit (DQA) is one of the initiatives established... ...e clinics, community health centers and hospitals in three districts of the province. It is important to track every sequential steps of diagnostic and treatment services of PMTCT program. Effective monitoring could indicate the performance of the program in identifying HIV infected mothers and providing correct treatment. In South Africa, like many developing countries, health data collecting and reporting system was often stated unreliable (Garrib et al., 2008). As such, the PMTCT program introduced an intervention to improve the completeness and accuracy of the routine data collected in the DHIS. The flow of data begins at the service delivery points and the staffs at each primary care facilities combine these data monthly on paper and report to clinic supervisor. The data are transferred to electronic format by an information officer within the facility.

Concept, nature and limitation of financial accounting Essay

Accounting is the process of recording, classifying, summarizing, analyzing and interpreting the financial transactions of the business for the benefit of management and those parties who are interested in business such as shareholders, creditors, bankers, customers, employees and government. Thus, it is concerned with financial reporting and decision making aspects of the business. The American Institute of Certified Public Accountants Committee on Terminology proposed in 1941 that accounting may be defined as, â€Å"The art of recording, classifying and summarizing in a significant manner and in terms of money, transactions and events which are, in part at least, of a financial character and interpreting the results thereof†. FINANCIAL ACCOUNTING: The term ‘Accounting’ unless otherwise specifically stated always refers to ‘Financial Accounting’. Financial Accounting is commonly carries on in the general offices of a business. It is concerned with revenues, expenses, assets and liabilities of a business house. Financial Accounting has two-fold objective, viz, To ascertain the profitability of the business, and to know the financial position of the concern. NATURE AND SCOPE OF FINANCIAL ACCOUNTING: Financial accounting is a useful tool to management and to external users such as shareholders, potential owners, creditors, customers, employees and government. It provides information regarding the results of its operations and the financial status of the business. The following are the functional areas of financial accounting:- Dealing with financial transactions: Accounting as a process deals only with those transactions which are measurable interms of money. Anything which cannot be expressed in monetary terms does notform part of financial accounting however significant it is. Recording of information: Accounting is an art of recording financial transactions of a business concern. Thereis a limitation for human memory. It is not possible to remember all transactions ofthe business. Therefore, the information is recorded in a set of books called Journaland other subsidiary books and it is useful for management in its decision making  process. Classification of Data: The recorded data is arranged in a manner so as to group the transactions of similar nature at one place so that full information of these items may be collected under different heads. This is done in the book called ‘Ledger’. For example, we may have accounts called ‘Salaries’, ‘Rent’, ‘Interest’, Advertisement’, etc. To verify the arithmetical accuracy of such accounts, trial balance is prepared. Making Summaries: The classified information of the trial balance is used to prepare profit and loss account and balance sheet in a manner useful to the users of accounting information. The final accounts are prepared to find out operational efficiency and financial strength of the business. Analyzing: It is the process of establishing the relationship between the items of the profit andloss account and the balance sheet. The purpose is to identify the financial strength and weakness of the business. It also provides a basis for interpretation. Interpreting the financial information: It is concerned with explaining the meaning and significance of the relationshipestablished by the analysis. It should be useful to the users, so as to enable them totake correct decisions. Communicating the results: The profitability and financial position of the business as interpreted above arecommunicated to the interested parties at regular intervals so as to assist them tomake their own conclusions. LIMITATIONS OF FINANCIAL ACCOUNTING: Financial accounting is concerned with the preparation of final accounts. The business has become so complex that mere final accounts are not sufficient in meeting financial needs. Financial accounting is like a post-mortem report. At the most it can reveal what has happened so far, but it cannot exercise any control over the past happenings. The limitations of financial accounting are as follows: 1. It records only quantitative information. 2. It records only the historical cost. The impact of future uncertainties has no place in financial accounting. 3. It does not take into account price level changes. 4. It provides information about the whole concern. Product-wise, process-wise, department-wise or information of any other line of activity cannot be obtained separately from the financial accounting. 5. Cost figures are not known in advance. Therefore, it is not possible to fix the price in  advance. It does not provide information to increase or reduce the selling price. 6. As there is no technique for comparing the actual performance with that of the budgeted targets, it is not possible to evaluate performance of the business. 7. It does not tell about the optimum or otherwise of the quantum of profit made and does not provide the ways and means to increase the profits. 8. In case of loss, whether loss can be reduced or converted into profit by means of cost control and cost reduction? Financial accounting does not answer this question. 9. It does not reveal which departments are performing well? Which ones are incurring losses and how much is the loss in each case? 10. It does not provide the cost of products manufactured 11. There is no means provided by financial accounting to reduce the wastage. 12. Can the expenses be reduced which results in the reduction of product cost and if so, to what extent and how? No answer to these questions. 13. It is not helpful to the management in taking strategic decisions like replacement of assets, introduction of new products, discontinuation of an existing line, expansion of capacity, etc. 14. It provides ample scope for manipulation like overvaluation or undervaluation. This possibility of manipulation reduces the reliability. 15. It is technical in nature. A person not conversant with accounting has little utility of the financial accounts.