Properties of Ionic and Covalent Compounds

Properties of Ionic and Covalent Compounds If you know the chemical formula of a compound, you can predict whether it contains ionic bonds, covalent bonds, or a mixture of bond types. Nonmetals bond to each other via covalent bonds while oppositely charged ions, such as metals and nonmetals, form ionic bonds. Compounds which contain polyatomic ions may have both ionic and covalent bonds. Identifying Bond Types But, how do you know if a compound is ionic or covalent just by looking at a sample? This is where the properties of ionic and covalent compounds can be useful. Because there are exceptions, you need to look at several properties to determine whether a sample is ionic or covalent, but here are some characteristics to consider: Most crystals are ionic compounds. This is because the ions in these compounds tend to stack into crystal lattices to balance between the attractive forces between opposite ions and the repulsive forces between like ions. Covalent or molecular compounds can exist as crystals, though. Examples include sugar crystals and diamond.Ionic compounds tend to have higher melting and boiling points than covalent compounds.Ionic compounds tend to be hard and brittle while covalent compounds tend to be softer and more flexible.Ionic compounds conduct electricity when dissolved in water while covalent compounds typically dont. This is because covalent compounds dissolve into molecules while ionic compounds dissolve into ions, which can conduct charge.

Research paper, management responsibility of a small, start-up Essay

Research paper, management responsibility of a small, start-up software company - Essay Example The cut throat environment of global business demands a committed management that is focused towards collective goals and creative thinking. The management needs to accept the challenge of creating a cohesive and encouraging atmosphere so that the workers could get effective learning environment. They are also responsible for advocating and nurturing a high standard of ethics and quality work while fostering a good relationship amongst them which includes the administrators, management and entire customer base. The major objective of quality management is to promote quality assurance at various levels of business processes through measures that drastically reduce the percentage of error within the production and maintain a minimum standard. Juran asserts ‘all quality improvement occurs on a project-by-project basis and in no other way’ (Juran, 2000). This is the foundation of quality assurance techniques and application which the organizations follow in order to meet the challenges of the time. Hence, the changing dynamics of the global business has necessitated formation and incorporation of management strategies that go beyond the realm of individual company’s concern and plan for distinctive competencies to give the company market leadership. The focused approach must facilitate and identify the critical factors of change and meet the challenges with creative inputs through collective vision and shared goals. IBM believes that policy rationale for quality management promotes ‘productivity and quality across the entire service lifecycle from requirements, design, development, quality assurance, security, and compliance to deployment and operations’ (IBM). Hence, SQM must ensure that careful consideration of various inter-related modules, which are intrinsic to its successful implementation, are incorporated within the processes to

Holocaust Literature review Example | Topics and Well Written Essays - 1000 words

Holocaust - Literature review Example Adolf Hitler’s role in the Holocaust thus was of absolute measure and his doings led to a changing in the entire world and affected many parts like the Middle East as well. ("Adolf Hitler.") Adolf Hitler, also known as the Fuhrer, was the leader of the National Socialist German Workers Party and soon went on to become the German Chancellor in the year 1933. He played a very vital role in establishing and taking further the rule of fascism in Europe and has played a very significant role in the Second World War. The Beer Hall Putsch came to be known as the failed coup d’etat that Hitler had attempted which led to him being imprisoned for a short term during which he wrote his biography titled Mein Kampf which has come to be known as one of the most widely read books of today. It contains some of the most monstrous and heinous ideas with respect to cruelty subjected towards mankind. There have been certain accounts of Hitler in his previous days where he has been kind tow ards Jews, thus this animosity towards the Jewish people probably began much later in his life. He used to interact with the common people, mostly Jews and try and make a living before he had become a part of the army and the political party of Germany. He became an anti-Semitic during his time in Vienna and this group of anti-Semitics had a vast number of Jews as well. Many even say that he was influenced deeply by Martin Luther’s book, ‘On The Jews and Their Lies.’ This did indeed make a great impact on the religious and political associations of Germany at the time. (Toland, John) In the First World War, Hitler fought in a number of major battles and had come to be known as a very brave and undefeated soldier. He was a creative man and devoted a lot of his time to his art and cartoon making. Soon after entering into politics, he tried to push his stance in the country with respect to fascism as he tried to take over what is known as the Beer Hall Pustch. Hitle r’s modus operandi, titled Mein Kampf was earlier titled ‘Four and a half years of Struggle Against Lies, Stupidity and Cowardice.’ He did not have much regard for people that were below him as more and more power came to attach itself to him. As soon as he became the Chancellor of Germany, he tried to foil all the plans of his opponents that wanted to come to power because he wanted to maintain a dictatorship in all of the land. In 1934, he said to a correspondent, â€Å"At the risk of appearing to talk nonsense I tell you that the Nazi movement will go on for 1,000 years! ... Don't forget how people laughed at me 15 years ago when I declared that one day I would govern Germany. They laugh now, just as foolishly, when I declare that I shall remain in power!†( "Mein Kampf by Adolf Hitler."  ) The Holocaust was one of the most evil implemented ideas of Hitler; it was commonly known as the killing of the Jews. During the Second World War, Hitler ordered th e construction of concentration camps by the Nazis, commonly known as Auschwitz, in which approximately six million Jews were tortured and killed. Other people like homosexuals, Soviet prisoners, Polish people, disabled people, and other political and religious opponents were killed mercilessly which led to the total count being almost seventeen million people. (Adolf Hitler Biography.) The prisoners in these camps were also sent to extermination camps and

Describe the culture (e.g., lifestyles, values, mores, and other Research Paper

Describe the culture (e.g., lifestyles, values, mores, and other characteristics) of at least two minority cultural populations living within your home state - Research Paper Example For the purpose of this paper, I have identified the Mexican and the Indians as the minority cultures living in my area. The reason for choosing these cultures is because they have managed to create a unique identity for themselves despite coming from one of the poorest countries of the world. Their cultures are rich and they often present a unique perspective of life through their customs and traditions. From an education point of view, I need to understand the background of these cultures in in order to interact with its people. For a successful bonding and communication, one needs to have an in-depth knowledge on the culture of the communicator. I will be discussing the educational aspirations, family life and beliefs of the two cultures that I have selected. I have focused on these three since I believe that as an educator, these are the most important aspect of every culture. My role as an educator demands that I should have knowledge on the educational aspirations of the cultures that I would possibly be teaching later on. Also family life deeply affects the academic life of a student and with each culture there is a difference in family life. Beliefs are important to study as most people are very possessive of their religions and as an educator I need to connect which requires me to understand the beliefs of each culture. The Chinese family life is quite unlike the typical family life of the western world. The Chinese respect and honor their families especially their elders. Chinese, like most Asian cultures, still give the maximum authority to the eldest male who is endowed with the highest respect and also the biggest responsibility of earning and looking after the family. While the nucleus family lives together in one household, the extended family is also treated with the respect and love. The Chinese family is complete with aunts, uncles, cousins etc. In

Network security Essay Example | Topics and Well Written Essays - 500 words

Network security - Essay Example Technical security controls are made of three components: detective, corrective and preventive, which all work to mitigate risks within a system. The first step I will access the router through the web interface. This will allow me to configure encryption using the WPA2 or the pre-shared key. This will ensure that anyone who all devices must provide this key before joining the network. There are three IKE policy choices message encryption, message integrity hash algorithm and peer authentication method. The policies are satisfied by various encryption methods that are dependent on a number of factors such as type of hardware in place. The key length available when using encryption algorithm allows the definition of key length used in terms of bits. When it comes to choosing message encryption algorithm, 3des is the strongest when compared to DES. The sha encryption offers a better encryption type as compared to md5 when it comes to message integrity has algorithm. For the peer authentication method, the rsa-sig offers a stronger encryption. An intrusion detection system has powerful features that provide notification when an attack occurs. On the other hand, a detective prevention system only uses limited functions to thwart attacks from taking place. Detection system is also limited because it relies on copies of network packets, which must be received from another switch. This makes sensors operating in intrusion mode to be said as running in promiscuous mode. Compared to detection system, intrusion prevention is more robust and has better features because it operate in inline mode where it checks as packets flows in teatime. Therefore, it can prevent traffic from entering a given network in

Procurement Routes in Construction

Procurement Routes in Construction The main purpose of this report is to evaluate key procurement issues that the client has to consider in selecting an appropriate procurement route for the rapid reconstruct of three hotel building project. We have analysed four kinds of procurement routes such as traditional procurement route, design and build procurement route, management contracting procurement route and construction management procurement route. After the analysis, we have chosen a most suitable method to meet our objective, in terms of cost certainty, construction within the planned period and quality of the building. Also, creating a sparkling and luring environment for hotel guests in the near future. We too have considered the economic benefits as such if the hotel re-opened on time within the budgeted cost, we can also recover the investment costs as soon as possible. Therefore we have recommended the design and build procurement route for this project. Introduction In construction industry, many factors cause the results of the project. The right procurement route is one of the factors to achieve project successfully. In order to select best procurement route, we need to analyse clients background, objective, project requirements, technical complexity of the project, construction risk (cost, time and design/quality) and etc. Analysis Client Background Cinnamon Grand is a privately owned large hotel chain in the UK. They offer comfortable accommodation across the UK and are committed to preserving their rich heritage. They are very passionate about the outlook of their hotel buildings and they are experienced at renovation of buildings. But they have lack of in-house executive who is either experienced enough or enable to devote sufficient time in advising the reconstruction of their properties. Project Requirements As the hotel has planned to reopen on the 1st April 2015, we have started planning for the project on August 2012 and construction will be started on 1st March 2014. Lastly, the hotel will be handed over to the owner latest by 28th February 2015. Reconstruct in two phases Phase 1 Rapid reconstruction for the main areas of the hotels such as swimming pools, roofs, restaurant and guest rooms, which allows the hotel to be re-opened for business within a period of 12 months (from 1st March 2014 to 28th February 2015). Phase 2 Newly construction of some facilities such as health and fitness centre, conference and meeting, rooms dance studios. High technology multimedia facilities with air conditioning shall also be provided for conference and meeting rooms. During construction, good service will also be provided to hotel guests. Quality of the buildings is also important. The new constructed hotel must create sparkling and luring environment that can be enjoyed by all hotel guests. It has to match the existing hotel or even better which allows the former magnificent look to be brought back. Design requirements Design quality should at least match the existing hotel or even better. The tender document submitted by the tender contractor should include scope of works, construction methods, programming, management methods, availability of resources and costing. The material application will submit through template or sample and requires strict inspection and approval by client. Contractors typical design proposals require approval by client, due to client experienced in the renovation of buildings. Client requires retaining the ancient architectural style- rich heritage for the external features of the hotel Using green materials in order to lower impact to the environment. For example: using green roof. Demolitions works will minimize the damage to the building when using suitable method. Maintenance proposals should be done during the preparation time (from August 2012 to 1st March 2014). Good construction planning and planning should include safety, environmental and health issues and solution. Especially during the phase 2 constructions, the normal business of the hotel will not be affected by the construction. Hotel guests will also not be subjected to the influence of the construction. Client Objectives To complete project within the budget of  £120 million by choosing the best possible procurement route. To complete the building within the planned schedule. To enhance the quality of building and facilities provided, creating a sparkling and luring environment after renovation of the building During phase 2 constructions, good service must be provided to the customer. Analysis of the Procurement Route There are three generally accepted standard approaches to construction procurement in the UK construction industry: traditional procurement; design and build procurement and management procurement (management contracting and construction management). Different procurement route has different approach. Hence, we will analysis the traditional procurement, design and build procurement, construction management and management contracting. 3.4.1 Analysis of traditional procurement route The clients consultants will complete fully the design before contractors tender. Then the tender will be usually awarded to the contractor with the lowest price. Advantages Good design quality due to design completed by clients consultants. Client will choose the lowest tender price as contractors will tender based on the same information given. Procedures well known by both party Disadvantages Long preparation time, due to design fully completed by clients consultants before tender. Construction will only start on site upon the completion of the design. Client is fully responsible for the design risk Risks Lump sum contract will bring the cost risk to low risk as same information given by client. As for fixed contract date, the contractor might have the right to claim for extensions due to design or contraction issues, therefore it is medium time risk. As design quality control by clients consultant based on clients requirement, therefore it reduces design risk to low design quality risk. In conclusion, traditional approach is suitable for inexperienced clients or occasional construction clients and project without critical time requirements. It is not suitable for some large and complex project which requires advanced management systems, structures and skills. 3.4.2 Analysis of design and build procurement route The design and construction is undertaken by a single contractor for a lump sum contract, which allows overlapping. Design is not fully develop by contractor before the contract is awarded. Advantages Single contact point due to contractor is responsible on design and construction. Early start and shorter project duration due to design and construction is overlapping. Client can control project cost due to lump sum basis. Disadvantages Tender need to be awarded before design fully complete. Client has the difficulty to prepare the adequate brief. After the tender has been awarded, changing of design can be expensive for the client. Risks Lump sum contract will reduce the cost risk to low risk. Design and construction can be overlapping; therefore it is a low time risk. Design and build contractor is responsible for the design, if clients design requirement is not clearly indicated, then maybe it is a high risk for design quality. Therefore Design and build approach is suitable for all clients including inexperienced or client requiring cost certainty and fast track projects. Not suitable for complex or high quality buildings. 3.4.3 Analysis of construction management procurement route Construction Management, in which the design is developed by the Employers consultants and construction commences before the design is complete. A fee-earning consulting Construction Manager works for the Employer to define and manage several Works Packages, each representing a specialised or functional aspect of the project. Advantages Shorter overall project duration Clarity of roles, risks and relationships for all participants Client requires late design change easily due to contact awarded by different package Disadvantages Client doesnt have control on cost. Need a good quality project team to manage the project. Needs effective control of time and information. Risks Actual cost will only be known until the last package is awarded, so cost risk is medium. Because job is awarded by individual package, so does not has the main organisation to overall control the construction time. Therefore time risk is considering as medium risk. Project done by individual specialist contractors to reduce the design risk to low risk. Construction Management approach is suitable for experienced clients, fast track projects, complex building and not suitable for project requiring cost certainty. 3.4.4 Analysis of management contracting procurement route Management Contracting, in which the design is developed by the Employers consultants and construction commences before the design is complete. A Management Contractor is appointed early to let elements of work progressively as a series of trade or package contracts (called works packages). As with Construction Management, the final cost can only be determined when the last packaged has been let. Advantages Overall project duration shorter Client requires late design change easily due to contact awarded by different package Work packages let competitively Disadvantages Poor cost certainty, client will only know the final price till the last package been awarded. Need a good quality project team to manage the project Need a good quality brief to every works contractor, if not the case, contractor may not make client requirement. Risks Actual cost will only be known till the last package is awarded, so cost risk is medium. The total construction duration is a consequence of package selection. Therefore time risk is considering as medium risk. Project done by individual specialist contractors to reduce the design risk to low risk. Management contracting approach is suitable for experienced clients, fast track projects, complex building, and fairly large project. It is not suitable for project requiring cost certainty. Conclusion No procurement route is best suited in all circumstances. We can only base on the key elements and to select a most suitable procurement route. Time within planned schedule, cost certainty and quality of the building are the key elements we need to consider in this project. Both traditional and design and build can achieve clients objective of cost certainty. Management contracting, construction management and design and build can achieve clients objective of time within planned schedule. Management contracting, construction management and traditional can achieve clients objective of quality of building. Based on above analysis, out of 3 key elements we only can choose two most important elements as following:- Cost is the first consideration. Both management contracting and construction management procurement routes, the cost can only be known till the last package is awarded. But due to client concerns for cost overrun, they want to know the cost before project start. So both routes are not recommended. Time is the second consideration. Hotel must be re-opened on 1st April 2015. As only 12 months is given for phase 1 construction and the opening before the tourist season has a great impact on the hotel business, therefore traditional is not suitable for fast track construction. Design and build is well suited to warrant maximum price contracts and design and construction overlapping. This will involve considering return on capital investment, the likely benefits to operational efficiency or income flow. So we are not considering using traditional in this project. Quality of the building is the third consideration. It is generally felt in the construction industry that quality is the first thing to suffer in design and build contracts. However, the evidence does not support this. Quality of the building is the result of how we management the construction process. There is no correlation between procurement method and perceived quality of the product. After consideration, we will recommend design and build procurement route for this project. The appointed contractor is responsible for the design, documentation and construction of the project, based on the client project brief and requirements through lump sum cost. So the speed of construction is faster and the client will know the costs of the project earlier. Whether the quality of building can be achieved, it is depending on how well our project requirements have been defined and delivered. Project manager will be responsible for co-ordinated design and construction programme. This may considerably reduce revisions after contract award and minimise possible interferences. All team members must build up well communication channels, to solve the problem as soon as possible when construction is going on. Referencing John Murdoch and Will Hughes (2008), Construction Contract Law and Management, Fourth edition School of the Built Environment  © Herriot Watt University (2012), Procurement Contracts Task 2 Option A Discuss the liability of Alexander Contractors to the Employer for the additional costs that the Employer had to incur as a consequence of being required to employ a more expensive tenderer to carry out the construction project. Discuss the Clerk of Works power to issue a Direction as detailed in the given scenario and its implications on the loss and expenses incurred by the Contractor. Detail the possible claims with respect to the given scenario, the main facts that can be included in the claims and the contractual provisions available to substantiate the claims according to the JCT Standard Building Contract With Quantities 2005 Edition (JCT SBC05) Revision 2 2009. If you were the Contract Administrator prepare a report outlining your assessment of the Contractors claim including the process you have followed, the pertinent issues of the dispute and the contractual provisions relevant.

Capital Punishment: The Only True Justice Essay -- Death Penalty Essays

Justice cannot be served until the debate on capital punishment is resolved and all states have come to agree that the death penalty is the best way to stop crime completely. "The bottom line is, one method of execution is just as brutal and as barbaric as the next," says Mr. Breedlove of the National Coalition to Abolish the Death Penalty. This comes straight from the mouth of a member of a national organization against capital punishment. The American Heritage(r) Dictionary of the English Language, Third Edition defines execution as The act or an instance of putting to death or being put to death as a lawful penalty. So if Breedlove's words hold true, then what he believes is that someone going out and killing someone is barbaric. In a sense isn't that what he's saying, that one way of killing someone is just as bad as any other. So if he finds this so barbaric, why doesn't he do something about it? Many people who are against capital punishment are only thinking of the criminal and how cruel it is for them. But, shouldn't we think of the families that are broken apart now because of the merciless acts of these criminals. Think of Susan Smith, how she knowingly drove her car off into a lake with her two children strapped to the seats. Think of how they must have felt as the cold water started to fill the cabin of the car, and then ultimately drown them. Barbaric is exactly the word I would use to describe her actions. But yet, the jury rejected the death penalty and chose a life sentence instead. Mr. Smith, the father of the two children, broken up from the ruling said "Me and my family are disappointed that the death penalty was not the verdict, but it wasn't our choice. They returned a verdict they thought w... ...If anything, the death penalty is not enough. It can never bring back the loved ones to the families that have lost them. It can never bring back the innocent lives that have been taken in cold blood. Capital punishment must be the standard by which each and every state must abide by. If we cannot join together and defeat crime, it will most certainly take us over. We can no longer sit and let our lives be terrorized. No longer can we sit back and watch criminals be released and then kill again. No longer must we Americans or anyone live our lives in fear. We must come together and draw the line on crime. We must make the world safe so that we and our children may once again live in a world without the fear of being senselessly killed or losing our loved ones. For a cold blooded killer, capital punishment is the only true justice. Capital Punishment: The Only True Justice Essay -- Death Penalty Essays Justice cannot be served until the debate on capital punishment is resolved and all states have come to agree that the death penalty is the best way to stop crime completely. "The bottom line is, one method of execution is just as brutal and as barbaric as the next," says Mr. Breedlove of the National Coalition to Abolish the Death Penalty. This comes straight from the mouth of a member of a national organization against capital punishment. The American Heritage(r) Dictionary of the English Language, Third Edition defines execution as The act or an instance of putting to death or being put to death as a lawful penalty. So if Breedlove's words hold true, then what he believes is that someone going out and killing someone is barbaric. In a sense isn't that what he's saying, that one way of killing someone is just as bad as any other. So if he finds this so barbaric, why doesn't he do something about it? Many people who are against capital punishment are only thinking of the criminal and how cruel it is for them. But, shouldn't we think of the families that are broken apart now because of the merciless acts of these criminals. Think of Susan Smith, how she knowingly drove her car off into a lake with her two children strapped to the seats. Think of how they must have felt as the cold water started to fill the cabin of the car, and then ultimately drown them. Barbaric is exactly the word I would use to describe her actions. But yet, the jury rejected the death penalty and chose a life sentence instead. Mr. Smith, the father of the two children, broken up from the ruling said "Me and my family are disappointed that the death penalty was not the verdict, but it wasn't our choice. They returned a verdict they thought w... ...If anything, the death penalty is not enough. It can never bring back the loved ones to the families that have lost them. It can never bring back the innocent lives that have been taken in cold blood. Capital punishment must be the standard by which each and every state must abide by. If we cannot join together and defeat crime, it will most certainly take us over. We can no longer sit and let our lives be terrorized. No longer can we sit back and watch criminals be released and then kill again. No longer must we Americans or anyone live our lives in fear. We must come together and draw the line on crime. We must make the world safe so that we and our children may once again live in a world without the fear of being senselessly killed or losing our loved ones. For a cold blooded killer, capital punishment is the only true justice.