Family and consumer science Essay Example | Topics and Well Written Essays - 2750 words

Family and consumer science - Essay Example 1.1 Characteristics of Food Production and Food and Beverage Service Systems There are five techniques used in food production. Traditional method Sous vide method Centralised distribution Cook-Freeze method Cook-Chill method Traditional Method It is utilized within the kitchen and has the accompanying procedure: Things into kitchen Refrigeration Freezing Dry store Mise en place or arrangement Ordered from customer Cooking Serving Sous Vide Method It is a technique for cooking food that is sealed in airtight plastic containers with water for more extended than ordinary cooking times about 72 hours in a fewer cases at a correctly directed temperature lower than ordinarily utilized for cooking, normally at 55 Â °c to 60 Â °c for meats and high in vegetables. ... Cook-Freeze Method It is comparable to cook chill the distinction is the temperatures are further. Cook freeze is food preservation method in which it is ready and parceled, cooked, and afterward solidified to -20Â °c in a main kitchen. Cook-freeze saves food for up to eight prior weeks it is warmed for consuming. Cook-Chill Method Cook Chill is a food preservation technique in which food is ready and administered, cooked, and afterward chilled to 3 Â °c in a main kitchen. Cook-chill saves food for up to four prior days it is warmed for consuming. Food production is the place menu is arranged, crude materials are bought and acknowledged, and foods are cleaned, saved and ready. It is additionally where held up staff drop off and get orders. Crude materials are obtained is a troublesome and expert assignment. Buyers convey with it a mass of authority. Hospitality industry needs to give careful consideration to 2 things: Investigating the supply markets: Selecting the purchasing syste ms and knowing visibly request of the inn. Assessing items cost and worth. Advancing itemized acquiring specifications: It is to anticipate buyers trick lodging or take buying cash. Characteristics of Food Service There are a few qualities of food service that make it special contrasted with handling of different items. This uniqueness impacts choices that are made about processing and service. Some of these qualities incorporate: Food preparation and service are work concentrated. Request for food happens at top times, approximately breakfast, lunch, and supper dishes. There are slow times between these top request times. Skilled and incompetent labor both is required. Food is unpreserved, needing

Portfolio AT&T Horizontal and Vertical Analysis Essay

Portfolio AT&T Horizontal and Vertical Analysis - Essay Example AT&T had a net margin of 11.93%. In comparison with the industry average net margin of 7.8% the firm’s net margin is 4.03% higher (Dun & Bradstreet, 2012). As of September 30, 2012 the total assets of AT&T were $266,849 million dollars. In comparison with fiscal year 2011 the total assets of the firm decreased by 1%. †Total assets include cash and other items of value that can be converted into cash that are owned by a person or company† (Crutchfield, 2012).The current assets of the company in 2012 were $18,958 million which represents a decline in current assets of $4,069 million in comparison with the previous year. Based on the vertical performed the current assets of the company represent 7% of total assets. The current and total liabilities of the company during 2012 were $30,758 million and $165,575 million respectively. The current ratio shows the ability of the company to pay off its current debt. AT&T’s current ratio during 2012 was 0.62. The curren t ratio of the company is bad considering the fact that a good current ratio is above the 1.0 threshold. The formula to calculate current ratio is current assets divided by current liabilities. AT&T must improve its current ratio; otherwise the company might face liquidity problems. The return on assets (ROA) metric measures how profitable a company is in relation to its total assets (Investopedia, 2012). A high ROA is the preferable outcome. During 2012 the return on equity of the company was 4.24%. In comparison with the industry average of 17% AT&T is not exploiting and generating sufficient income from its assets (Dun & Bradstreet, 2012). The return on equity of AT&T in 2012 was 11.17%. Return on equity (ROE) is calculated by taking a year's worth of earnings and dividing them by the average shareholder equity for that year (Fool, 2012). The firm’s debt ratio is 0.62. A debt ratio is a financial metric that measures how much debt a company has in relation to its assets. T he firm’s debt to equity ratio is 1.63. The debt to equity ratio is calculated dividing total equity by the total assets of the company. The financial analysis performed on AT&T shows that the company has good profitability, but the firm seems to be using too much debt to finance its operations. The low current ratio of the company is a warning sign. Assuming the company enjoys the same revenue growth of 1% in the following fiscal the projected sales of the company in 2013 are $95,162 million. Credit Worthiness The creditworthiness of a corporation can be evaluated in a variety of ways. Corporations just like individuals have credit scores from the major credit agencies. This information is private and not accessible to the general public. Banking institution gain access to a firm’s credit scores whenever a firm applies for a loan or others financial instruments. An investor can evaluate the credit worthiness of a firm using a combination of ratios. The current ratio m easures a firm’s ability to pay off its current or short term debts. The debt to equity and debt ratio are two good indicators of how much leverage a firm has in the long term. Comparing these ratios to the industry standard is a good way to determine the credit position of the firm. Management Discussion and Analysis Four key findings for the MD&A section of the annual report of AT&T are: The future of wireless growth depends on the ability of companies to provide new innovative services and devices. The managerial staff

Crowd and Safety Management Essay Example | Topics and Well Written Essays - 2000 words

Crowd and Safety Management - Essay Example However nowadays with the developing world come new problems which should be addressed. The sports being played today are made as safe as possible for the people. The measures of safety are of such importance that some states are implementing reforms in order to ensure safety and security while these sports are being played. Similarly this article would further provide a report on all the aspects of security and safety in the stadiums. Cricket is one of the sports which are being played widely in the world these days. Due to its increasing popularity, it is necessary that some measures be introduced to ensure security and safety in the stadiums. Lords is one of the grounds which is quite famous for cricket and is based in England. Thomas Lord is known to be the founder of this stadium. This stadium has a huge history and is considered one of the biggest stadiums in the cricketing world. This ground is not only being used for international matches these days but another form of cricket i.e. county is also being played here. The boards which manage this stadium are the board of England & Wales also known as the ECB. Similarly to ensure the status of a ground with such a stature the board has taken some important measures. As the increasing cases of Hooliganism are happening these days the board is very careful in determining the policies for this stadium. The board has maintained strict rules if their policies are n ot followed by. Safety in the stadium is ensured by not letting any fan to enter the premises of the ground without the ticket. The ticket factor has been playing a major role in the industry of sports and thus the board of cricket is monitoring this issue very closely. Legislations in the United Kingdom have been introduced which do not allow any unauthorized personnel to sell tickets of a sporting event without the consent of the concerned authority. Similarly the cricketing board has carried out steps to ensure that ticket touting does not take place. The board has tried to improve its internal system of selling the tickets so that fans directly contact the concerned authorities and do not go for any other middle person. This makes sure that the people who come in the stadium are known and remove any chance of mishap in the stadium. Similarly the cricketing board also reserves the right to remove any one from the ground of Lords if he/she does not obey the instructions given to t hem. This removes the threats of hooligans in the stadium. For e.g. if a person is trying to create an irritating environment for others he may be kicked out before any mishap occurs in the stadium. The board does not allow any unauthorized person from entering the area where the cricketers play i.e. the ground where they are playing. The amount of alcohol bought into the stadium is also closely reviewed. All the actions taken by the board members are through the way of setting up check points wherever necessary. These check points are given special instructions by the board members to check every fan which comes into the arena. There are strict rules on the amount of alcohol brought into the ground. There is a certain quantity maintained by the board members for the amount of alcohol brought into the cricket ground. And if any person is found with an amount of alcohol more then

Macro and Micro economics research Essay Example | Topics and Well Written Essays - 1000 words

Macro and Micro economics research - Essay Example Competitors sell products and services of the same description. A public is any group that has a potential interest on the ability of a company to achieve its goals and objectives. Macro environment Macro environment factors are also external to the firm and cannot be controlled. These factors hardly have any effect the marketing capability but affect the decisions of marketing within the company. Macro environmental factors may include the following: Cultural and Social Forces: This idea is considered in marketing literature as a substitute to the concept of marketing. The social forces try to make marketing as a practice that is socially responsible. This implies that companies ought to eradicate products that are socially harmful and only produce what may be valuable to society. Legal and political forces: Development in the legal and political field highly affects the decisions of marketing. Marketing decision may not be taken without considering the political parties in power, g overnmental agencies and laws regarding land. These variables often develop remarkable pressures on management of marketing. Laws often affect promotion and pricing, product design, capability and product capacity. In almost all the countries, the government always intervenes in the process of marketing despite their political beliefs. Demographic forces: In this situation, the marketer examines the population since the people create markets. Economic factors: The economic environment is made up of macro level factors that relate to a distribution and production means that affects the business of a company. Physical forces: These include the renewable and non-renewable resources of the earth. Renewable forces include food products and... Cultural and Social Forces: This idea is considered in marketing literature as a substitute to the concept of marketing. The social forces try to make marketing as a practice that is socially responsible. This implies that companies ought to eradicate products that are socially harmful and only produce what may be valuable to society. Legal and political forces: Development in the legal and political field highly affects the decisions of marketing. Marketing decision may not be taken without considering the political parties in power, governmental agencies and laws regarding land. These variables often develop remarkable pressures on management of marketing. Laws often affect promotion and pricing, product design, capability and product capacity. In almost all the countries, the government always intervenes in the process of marketing despite their political beliefs. Demographic forces: In this situation, the marketer examines the population since the people create markets. Economic factors: The economic environment is made up of macro level factors that relate to a distribution and production means that affects the business of a company. Physical forces: These include the renewable and non-renewable resources of the earth. Renewable forces include food products and the forest. Non-renewable resources include minerals, coal and oil. These components often change the level of resources that are necessary for a marketer.

Crowd and Safety Management Essay Example | Topics and Well Written Essays - 2000 words

Crowd and Safety Management - Essay Example However nowadays with the developing world come new problems which should be addressed. The sports being played today are made as safe as possible for the people. The measures of safety are of such importance that some states are implementing reforms in order to ensure safety and security while these sports are being played. Similarly this article would further provide a report on all the aspects of security and safety in the stadiums. Cricket is one of the sports which are being played widely in the world these days. Due to its increasing popularity, it is necessary that some measures be introduced to ensure security and safety in the stadiums. Lords is one of the grounds which is quite famous for cricket and is based in England. Thomas Lord is known to be the founder of this stadium. This stadium has a huge history and is considered one of the biggest stadiums in the cricketing world. This ground is not only being used for international matches these days but another form of cricket i.e. county is also being played here. The boards which manage this stadium are the board of England & Wales also known as the ECB. Similarly to ensure the status of a ground with such a stature the board has taken some important measures. As the increasing cases of Hooliganism are happening these days the board is very careful in determining the policies for this stadium. The board has maintained strict rules if their policies are n ot followed by. Safety in the stadium is ensured by not letting any fan to enter the premises of the ground without the ticket. The ticket factor has been playing a major role in the industry of sports and thus the board of cricket is monitoring this issue very closely. Legislations in the United Kingdom have been introduced which do not allow any unauthorized personnel to sell tickets of a sporting event without the consent of the concerned authority. Similarly the cricketing board has carried out steps to ensure that ticket touting does not take place. The board has tried to improve its internal system of selling the tickets so that fans directly contact the concerned authorities and do not go for any other middle person. This makes sure that the people who come in the stadium are known and remove any chance of mishap in the stadium. Similarly the cricketing board also reserves the right to remove any one from the ground of Lords if he/she does not obey the instructions given to t hem. This removes the threats of hooligans in the stadium. For e.g. if a person is trying to create an irritating environment for others he may be kicked out before any mishap occurs in the stadium. The board does not allow any unauthorized person from entering the area where the cricketers play i.e. the ground where they are playing. The amount of alcohol bought into the stadium is also closely reviewed. All the actions taken by the board members are through the way of setting up check points wherever necessary. These check points are given special instructions by the board members to check every fan which comes into the arena. There are strict rules on the amount of alcohol brought into the ground. There is a certain quantity maintained by the board members for the amount of alcohol brought into the cricket ground. And if any person is found with an amount of alcohol more then

Baker and McKenzie Law Firm in Worldwide Markets Research Paper - 1

Baker and McKenzie Law Firm in Worldwide Markets - Research Paper Example Baker and McKenzie is an American law firm based in Chicago city. The firm has a total of 3774 attorneys, 1349 partners, and 2425 associates (Baker and McKenzie 1). Baker and McKenzie law firm tops the list of the most successful law firms in the United States. The firm is renowned to have redefined the worldwide law firm of the 20th century in order to meet the global economic challenges of the 21st century. The 3774 lawyers are located in over 70 offices worldwide. The firm has a unique way of working, thinking and behaving. The function across borders and they deal with a wide variety of issues as well as practices (Baker and McKenzie 1). Baker and McKenzie law firm understands the economic challenges facing the globe, and for that reason, it has been of the forefront of matters since the firm’s opening in 1949. Laws that work in Baker and McKenzie law firm include financial litigation, product liability, aviation law, capital markets, bankruptcy, business and industry, com mercial law, insolvency, intellectual property, international law, international trade, and investment law. The firm also deals with consumer law, contracts, copyright, corporate governance, and corporate law among others (Baker and McKenzie 1). The firm has advised leading companies on matters of today’s incorporated world market. Baker and McKenzie law firm has cultivated the tradition, commercial simplicity, and technical, as well as interpersonal skills, vital to offer world-class service tailored to the needs of world-class customers globally.

Introduction to Synchronization

Introduction to Synchronization Synchronization is a mechanism which helps to use shared memory resources in an operating system. In the current world, most of the computers are multi-tasking computers. So these computers can do more than one process at the same time. And the networking technology is has become one of the most modern and developed technologies in the current worlds. So both these computer and network technologies work together in order to achieve common goals. While working together these technologies have to share resources such as memory at the same time. While sharing memory, there can be many problems. To avoid these problems synchronization mechanisms were implemented. Concurrency As it is mentioned above, operating systems share memory in order to achieve common goals. The data can be shared among two processes in one operating system or two operating systems over a network. However there are sometimes that the shared data can be accessed by only one process at a time. As a real life example, shared bathroom can be taken. A shared bathroom can be used by many people but it can be used by only one person at the time. If someone is using the bathroom, others have to wait until that person to come out. Then the one of the waited people can use the bathroom. Another real life example for this is shared streets or junctions. In shared streets, people can use only one direction at one time. If the shared street is used by any direction, people from other direction have to wait till others to stop using the shared street. Otherwise there can be clashes and a lot of problems. Like these, when the operating systems use shared memory, sometimes only one process can acc ess the data at one time. So this is called concurrency. There must be some mechanisms to avoid this concurrency. In the above given two real life examples, the shared bathroom can use a lock in its door to make sure that only one person is using the bathroom at one time. In the shared streets, traffic lights can be used to make sure that only one direction is using the street and avoid the clashes. Like this, locking and synchronizations are the mechanisms that can be used to avoid concurrency in operating systems. Properties of systems with concurrency There are some properties of the systems with concurrency. Those properties are, multiple actors, shared resources and rules for accessing the resources. In the above given two real life examples, the multiple actors are people and vehicles while the shared resources become bathroom and street. The rules for accessing these shared resources are one person at one time for the bathroom and one direction for one time for the shared streets. When talking about these three properties in relating to the operating systems, it can be explained like this. Here, the multiple actors are processes within the operating system or threads in processes. Shared memory, global variables and shared devices can be taken as the examples for the shared resources property while locking and semaphores techniques become the rules for accessing the shared resources in operating systems. These are the three properties of the systems with concurrency and it helps to understand what the concurrency is. Situations with no risk of concurrency In the current computer technology, there are some situations that there is no risk of concurrency but the shared resources are accessed by more than one processes or threads at the same time. Those situations are as follows, No shared memory or communication :- Here, the processes or threads do not have shared memory or communication. So those processes or threads work only with its private memory. Shared memory with read-only access :- Here, the shared memory can be accessed by one or more processes or threads at the same time. But in this situation, the shared memory is only available for processes or threads to read-only. So the shared memory cannot be modified in this situation. Copy-on-Write (COW) :- Here, the shared memory is accessed by one or more processes or threads at the same time and each process or thread has a separate copy of the shared memory. So each process is accessing its own copy of the shared memory and there is no risk of concurrency. Situation with risk of concurrency As well as the situations with no risk of concurrency, there are some situations with risk of concurrency in the current operating systems. Those situations can be explained as follows, Using of shared memory without any synchronization :- Here, if the shared memory is accessed by more than one processes or threads at the same time without and synchronization (without having any separate copy for each process or threads), there is a risk of concurrency. Any modification to the shared memory :- If the shared memory is accessed by more than one processes or threads, and at least one of the processes or threads makes any changes to the shared memory, then there is a risk of concurrency. These are the situations with risk of concurrency. If one of these happens, then there is a risk of concurrency in the system. If a concurrency is happened, then there may be a lot of problems in the system. And the risk of happening the concurrency is known as race condition. Race condition Under this topic, the race conditions is discussed by using an example. Here, an example of a bank account is taken to discuss the race condition. In this example, there are two peoples and a bank account. Execution of the code of this example as follows, account.balance =  £200; int withdraw (account, amount =  £50){ balance = account.balance; balance -= amount; int deposit (account, amount= £100){ balance = account.balance; balance += amount; account.balance = balance; return balance; } account.balance = balance; return balance; } For this example, the two persons are named as person1 and person2. The code executed by the person1 is coloured with blue colour while the code executed by the person2 is coloured with red colour. This is a sketch of the programme but not coded with any programming language. In the very first line, the balance of the account is set to  £200. The rest of the code is explained as follows, Line 1 :- person1 starts executing the code and calls the withdraw() by giving the account and  £50 of amount as the parameters. Line 2 :- person1 reads the balance from the account class and assigns the value of balance variable in account class to his balance variable in his withdraw(). Line 3 :- person1 modifies the value of the balance variable in his withdraw() by subtracting the value of amount. So the value of the balance variable in his withdraw() becomes  £150. Line 4 :- In this line, the person2 starts executing the code by calling his deposit() by parsing account and  £100 of amount as the parameters. Line 5 :- Here, person2 reads the value of the balance variable in account class and assigns it to the balance variable in his deposit(). Here, still the value of balance variable in account class is  £200 as the person1 has not updated the balance in account class. Line 6 :- Person2 modifies the value of the balance variable by adding the value of amount variable to it. So the value of balance variable in deposit() becomes  £300. Line 7 :- person1 updates the value of the balance variable in the account class as  £150. Line 8 :- person 1 returns the value of the balance variable in withdraw() Line 9 :- person2 updates the value of the balance variable in the account class as  £300 Line 10 :- person2 returns the value of the balance variable in his deposit() After executing this code 2 peoples complete their transactions by leaving the final value of the balance variable in account class as  £300 while the real value of the balance variable in account class has to be  £250. So there is clear error in the final output of the process and this is called as the race condition. Manage concurrency Manage Synchronization means, use synchronization mechanism programs to write rues for control concurrency situations. One of these rules are as follows: Atomicity Atomicity allows one threat to access data to manipulate at a single situation. In another way, will allows no other threats to change data while one is running. This will either will lock the threat is in progress of manipulating the record or let other records to be waiting while one record access record. The other rule is conditional synchronization In this explain threats will be in a particular order to access the record. When threats arrives to access record rule will check the order and add to the queue and let wait until the turn of the threat to access the records. All above access methods will be easy to implement when can identify which is the critical part of the process should allow to access at a time. i.e. When Person A accessing account balance person B not allows to access balance at the same time. If extract further as bellow. 1.int withdraw (account, amount) { 2.int balance = account.balance; 3.balance -= amount; 4.account.balance = balance; 5.return balance; 6.} Line 1: will initialize threat and pass external parameter values into the threat withdraw as account and amount in this situation. Line 2: will declare balance variable locally to retrieve stored account balance from the database for threat to process and pass account balance in the account table account.balance. Line 3: will manipulate balance variable value (in this situation, we will deduct since it is withdrawal) from the amount has been pass form external parameter. -= notation for the deduction. Line 4: will update database with new balance value after withdrawal amount deducted from original balance. balance which is a local variable holding the new balance transfer to the account.balance and update record with new balance value. Line 5: will return new balance value to the screen if necessary Line 6: will terminate the process of withdraw by } There will be no concurrent when two threat access lines 1, 5 and 6. But if any threat try to access lines 2, 3 and 4 will be given incorrect information for one of the threats. Therefore from line 2 to 4 is very critical to let access only for one threat at any given time of the process as explain bellow. int withdraw (account, amount) { int balance = account.balance; balance -= amount;Critical Section account.balance = balance; return balance; } This identified sections will call as a critical section in another word, no other threats will allows to access while one threat is using at any given time because data will be manipulate when access line 2, 3 and 4. Critical section Critical section is set of codes access shared resources and there are several ways of developing critical section such as: Locks, Semaphores, Monitors and Messages. In this report will describe locks and semaphores how behave and how priority will work. Locks in synchronization First method of synchronization is locks. Locking is a very primitive system been used. Lock will lock the threat in the critical section while it is processing the record. Mainly lock has two stats Held and Not Held. At the Held state, one threat is in the critical section and at the Not Held state no threats in the critical section and can prioritised threats to have access. Also locks having two operations Acquire and Release. Which threat will request the lock to be held to access critical section and once threat previously use critical section release the lock acquired thread will get a chance and change the state as held. When threat finish it process in the critical section must release the lock to use by the other threats which are waiting in the queue. Figure The above figure has explain how acquire and release will behave at the critical section access, i.e. threats A, B and C request access permission to critical section at the same time by Acquire operation and threat A will grant access with the lock Held state enable. Once threat complete the process will call release operation to change the lock state to Not Held and lock will change state to Held with threat B and so on will be proceed to complete different threat request at the critical section. By using previous example take a look where to use Acquire and Release operations threat. int withdraw (account, amount) { acquire (lock); // Request lock to held to access critical section int balance = account.balance; balance -= amount;Critical Section account.balance = balance; release (lock); // Release lock after complete critical section access return balance; } With further explanation considering previous withdraw and deposit situation Figure 2. Overcome concurrency situation had occurred while both people access same account balance to manipulate the amount. Figure When implement locks use Boolean variable to check is lock held TRUE or FALSE? Acquire operation will keep other threats in the waiting state while lock held values is TRUE. If lock held VALUE is false, will change to TRUE with requested threat. When the threat completed process in critical section will call release operation and change lock held value as FALSE to make lock available for other threats will show in below construct. First create a global Boolean type variable held values TRUE or FALSE to check is lock holding by a threat or not and by default lock will not hold by any threat and value will be FALSE. structure lock { bool held; // initial value FALSE } Construct acquire by requesting a lock to be held and if lock à ¯Ã†â€™Ã‚  held value TRUE request threat will wait in the queue for lock to be released. If lock à ¯Ã†â€™Ã‚  held is FALSE and by acquire change value of lock à ¯Ã†â€™Ã‚  held to TRUE and take the control of the critical section access. void acquire (lock) { while (lock à ¯Ã†â€™Ã‚   held) ; // Hold other threats in the wait queue lock à ¯Ã†â€™Ã‚   held = TRUE; // Once get the lock, change lock value to TRUE } Construct release operation simply will change the start of lock à ¯Ã†â€™Ã‚  held value to false and allows other threat to access critical section for the next process. void release (lock) { lock à ¯Ã†â€™Ã‚   held = FALSE; // When complete process in the critical section, change lock value to FALSE } Semaphores in synchronization This is the second method of synchronization. This method is a very basic and powerful mechanism but difficult Implementation method and use blocking threats to access critical section instead of locking threats while using critical section. Semaphores has two operations and they are: wait (semaphore) or P() First of all as soon as threat request access permission P() or wait (semaphore) will decrease the counter values which is 1 by default. Then check is counter value become 0 or signal (semaphore) or V() Once a threat complete process in the critical section will call V() or signal (semaphore) and will increase counter value by 1. i.e. if a P() had decrease counter value 0 while it was in critical section and no other threats can access, but second threat has decreased to -1 while requesting permission to access critical section and waited. Also since second threat is still waiting to get permission it goes to sleep mode, hence V() will wake up threat in a sleep to start it process in critical section explains in Figure à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦. Figure à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.. Figure Readers/Writers synchronization This is another powerful method of synchronization. In this method, the data is accessed by two different ways. Those two ways are, readers and writers. Here, the readers only read files and writers update file contents or data. There are four (4) rules while using the readers/writers synchronization methods and they are as follows, If any reader(s) read the file and no writer is pending, the next reader can read the file without waiting. Writers have to wait till the reader(s) finish reading file. After readers finish reading, writer(s) will can start writing. If any writer is writing to the file, acquiring readers have to wait till writer finish writing. If one writer is writing to the file and if both readers and writers are waiting, at this situation priority will be given for writers who are waiting. Therefore readers will wait till all writers to compete writing and then readers will start reading. So readers can read most updated file. Future trends of synchronization In the current situation, locks and semaphores are widely used in order to prevent the concurrency. So it is very important to deal with the codes in critical section as otherwise there will be a lot of problems with the reliability of information systems. However using of systems with the locks are not time efficiency. So in the current situation of the computer technology, there is a trend of implementing lock free systems. According to the previous example of shared street, the shared street has to be controlled by using traffic lights. So on the shared streets, only one direction is allowed at one time. So the other directions are blocked at the same time. But there is a technique that does not need of using any traffic lights on the shared street. Here, fly over technique can be used and avoid blocking the directions. So all the directions on the shared street can be used at once without having any problem. But here, this technique may has some more waiting time as the length of the street can be increased while using fly over technique. Like in this example, lock free systems can be implemented in information systems. Semaphore method can be taken as an example for lock free system. But here as well, the processes have to wait sometimes as in the give example of fly over technique on shared streets. The weakness of this method is that lock free and wait free features cannot be implemented in the same information system. So only one of these methods (lock free or wait free) can be implemented in information system.