The Study Of Human Computer Interaction

The Study Of Human Computer Interaction Human-computer interaction (HCI) is the study of interaction between people or users and computers. It is often regarded as the intersection of design, computer science and several other fields of study. Interaction between users and computers occurs at user interface or simply interface. This includes both hardware and software such as object or characters are display by software on a personal computers monitor. The inputs receive from users via hardware peripherals. For example keyboard, mice. Human-computer interaction (HCI) studies a human and a machine in conjunction. It draws from supporting knowledge on both the machine and the human side. On the machine side which techniques in operating system, programming language, computer graphics and development environment are relevant. Other, the human side have communication theory, graphic and industrial design disciplines, social science, linguistics, cognitive psychology and human factors are relevant. Human-computer interaction (HCI) is a wide discipline which studies all the elements linked to the human use of computer and software by association. It also concerns devices which can be linked to computer such as mobile devices, computerized consoles and video terminals. The main aim of Human-computer interaction (HCI) is to make the use of software and computerized devices as simply and easy to understand as possible which with the aim of improving the efficiency and effectiveness of the action taken at the same time. Human-computer interaction (HCI) covers all the main stage of the productive flow from design of the user interface to the investigation of the result obtained, passing via the search for innovative solutions and the laboratory assessment of prototypes. This is another reason why Human-computer interaction (HCI) involves aspects linked to a number of disciplines, including: Your password is what tells the computer that you are who you say you are. Until we can do retina scans like in James Bond movies, the password is the best that we can do. But, because your password is like a key to your account, you need to safeguard it. Anyone who has your password can get into your account, and your files. Anyone who can guess your password has it. Anyone who has your password can pose as you. Therefore, you may be held responsible for someone elses actions, if they are able to get your password. You may not wish this to happen. Tips on safeguarding your password First and foremost, NEVER give your password to anyone. Anyone means your coworkers, your spouse, your systems administrator. In the event of an emergency, the sysadmin can change your password. Your sytems administrator never has a need to know your personal password. If someone needs to get onto our machines, and has a reason to be here, do not give them access to your account. Speak to the systems staff about us setting up an account for them. We would be very happy to give them one. Make your password something you can remember. Do not write it down. If you really, honestly forget your password, we can easily give you a new one. Wed rather set your password once a month because you forgot it than have someone find it written down and gain unauthorized access to your account. Make your password difficult for others to guess. This is not as hard as it initially seems. See the section below on chosing a good password. DO NOT Change your password because of mail from someone claiming to be your systems administrator, supposedly needing access to your files!! This is a popular scam in some circles. Remember, your systems administrator never needs your password for any reason. If someone needs to ask you to change your password so that they can gain entry to your account, they do not have reason to be there. We run sophisticated password crackers on the password files of our machines. If we guess your password, you will have to come see a staffer to have it changed. These are the same crackers that the bad guys have access to, so if you have a weak password, its better if we find out about it first. How Not to Choose a Password Here are some of the types of passwords that will be picked up by our crackers: Words in the dictionary. Words in any dictionary. Your user name. Your real name. Your spouses name. Anyones name (crackers dont necessarily know that your aunts middle name is Agnes, but its easy enough to get a list of 100,000 names and try each one). Any word in any cracking dictionary. There are lists of words that crackers use to try to crack passwords: passwords that a lot of people use. Some of these lists include: Abbreviations, Asteroids, Biology, Cartoons, Character Patterns, Machine names, famous names, female names, Bible, male names, Movies, Myths-legends, Number Patterns, Short Phrases, Places, Science Fiction, Shakespeare, Songs, Sports, Surnames Any of the above, with a single character before or after it (8dinner, happy1). Any of the above, capitalized (cat > Cat) Any of the above, reversed (cat > tac), doubled (cat > catcat) or mirrored (cat > cattac). We used to tell people that taking a word and substituting some characters (a 0 (zero) for an o, or a 1 for an l) made a good password. This is no longer the case. New crackers have the capability to crack things like this, in certain situations. Words like foobar, xyzzy and qwerty are still just plain words. They are also popular passwords, and the crack programs look for them. Avoid them. Any of the sample passwords, good or bad, mentioned in this document. How to Choose a Good Password I know that coming up with a good password can be difficult, so here are some guidelines to use. Choose a password that is at least six characters long. This should be long enough to discourage a brute-force attack. Currently, the maximum password length on many Unix systems is eight characters, but if you want to add a few more characters to make it easier to remember, go ahead. Just bear in mind that anything after the eighth character will be ignored (so abnormalbrain is the same as abnormal). In general, a good password will have a mix of lower- and upper-case characters, numbers, and punctuation marks, and should be at least 6 characters long. Unfortunately, passwords like this are often hard to remember and result in people writing them down. Do not write your passwords down! At work, your network people will require you to change your password every several days. At home, you should rotate your passwords as a matter of good computer hygiene. If you are using different passwords for differents websites, you can do yourself a favor by rotating portions your passwords every few weeks. Note that rotating parts of the password, not the entire passwords, will help deter hackers from stealing your phrases. If you can memorize three or more passwords at the same time, then you are in good shape to resist brute force hacker attacks. My conclusion is The graphical password schemes we considered in this study have the property that the space of passwords can be exhaustively searched in short order if an offline search is possible. So, any use of these schemes requires that guesses be mediated and confirmed by a trusted online system. In such scenarios, we believe that our study is the first to quantify factors relevant to the security of user-chosen graphical passwords. I recommendation that every month change one time password for safe. All security things dont let anyone know. Special security question. Because security question is help user find back forget password. character and number mix together is a best password.

Decision-Making Process Essay

Decision-making is a part of everyday life. One must decide on a daily basis; which route to take to work, which has less traffic, coffee or breakfast, or if the morning routine is altered by unexpected situations, which way to continue with the day ahead? According to Bateman and Snell (2011), the ideal decision-making process includes six stages; (1) identify and diagnose the problem, (2) generate alternative solutions, (3) evaluate alternatives, (4) make the choice, (5) implement the decision, and (6) evaluate the decision (p. 89). The process does not have to be thoroughly explained to realize many of the decisions one takes goes through these stages or some of them. One of the types of decisions one must carefully think and analyze before irrationally taking the plunge would have to be the purchase of one’s home. This type of decision is a very long-term commitment and a bit expensive. However, if properly acquire the decision; it is very worth-while. Buying a house or home starts at stage 1; one starts with identifying the problem or in this case the â€Å"wanting† to buy something to call home. It then follows to stage 2: generating alternative decisions. Stage 2 one is able to question if the house is really necessary. There are many suitable apartments and housing options as well. In this stage one also gets to question and calculate if it is within budget or if not, what one will have to do to be able to purchase the house. Once the financial side of the situation is evaluated and one still would like to continue it rolls into stage 3. Stage 3 consists of evaluating alternatives. In this stage one can go through the process of seeking locations, areas and house plans to choose what best fits with the ideal perfect home. This stage also allows to pick and choose what is best suitable for your home and knowing if there will be an upgrade made and changing the original price of the house. Staying with two suitable options and deciding from them will glide one to the next stage. Yes or No, Stage 4 is the decision-making part of the process. Once it has been decided to buy the house, the decision is implemented, Stage 5. Starting the necessary contracts and paper work to make this house one’s new home. The last step of the decision-making process is to evaluate the decision. In Stage 6 consists of one finalizing the process and setting down the last signature on the paper work and/or putting the down payment out on the table. In this type of choice all the steps in the decision-making process were followed. Nothing could have made it easier. As one can see the purchase of a new home, car, changing jobs and/or even choosing what school to send children to takes a decision-making process. Not all the steps are needed in some cases but some steps are automatically done like choosing alternatives.

Alcohol and Tobacco

Alcohol and tobacco use is becoming more common every day in our society. The media is continuously advertising tobacco companies and different brands of alcohol, while the government is continuously sending warning messages about the harm that alcohol and tobacco can cause. Tobacco can forever damage you’re your internal organs, while alcohol can cause major damage to your body as well as the people surrounding you. Although the public knows about the negative effects of these products, people still continue to use the substances without thinking twice.These products are legal if you are of age, so people will continue to experiment with alcohol and tobacco. On the other hand, drugs are not legal and are not advertised all over the media because they are prohibited in our society. If drugs were legal, experimentation and usage of these dangerous and deadly drugs would skyrocket. The usage of alcohol and tobacco is legal, but the usage of drugs should be prohibited in the Unit ed States. A theory is that if a person tries one drug such as marijuana, there is a high likelihood that that person will eventually try a harder drug such as cocaine.This is a very scary thought. If drugs were legal, many more individuals would be trying them. The media would be advertising cocaine like it was voldka. There is a large difference between these two products. People would feel like it was okay to experiment with the drug because its usage was legal. This could be harmful, because everyone can have a different effect to each drug. Drugs such as cocaine and heroin are highly addictive and dangerous. They not only cause damage to the person using but also to surrounding people.I am not trying to undersize alcohol and the damage it can cause, but at least there are laws against driving while intoxicated so that you can prevent yourself from harming another individual. Tobacco use affects your body in the long run, but other than second hand smoke, it does not directly pu t others in danger. Certain drugs can make a person spiral out of control and make them do certain things that they would never do if they were clean. A counter viewpoint is that drugs should be legalized because it is a person choice to use or consume whatever they wish.Advocates of legalizing drugs say that people will use drugs if they have the desire to whether it is legal or illegal. They mention that what is the difference between tobacco and alcohol versus drugs. Alcohol can be just as damaging to other people as drugs can be sometimes. The United States is a free country where we can speak how we feel and do how we feel and no one can tell us how to live our life. They say that if people want to use alcohol, tobacco and illegal drugs, they should have the freedom to do so. Both sides make valid points, but I definitely feel that drug usage would contaminate our society even more. Alcohol and Tobacco Alcohol and tobacco use is becoming more common every day in our society. The media is continuously advertising tobacco companies and different brands of alcohol, while the government is continuously sending warning messages about the harm that alcohol and tobacco can cause. Tobacco can forever damage you’re your internal organs, while alcohol can cause major damage to your body as well as the people surrounding you. Although the public knows about the negative effects of these products, people still continue to use the substances without thinking twice.These products are legal if you are of age, so people will continue to experiment with alcohol and tobacco. On the other hand, drugs are not legal and are not advertised all over the media because they are prohibited in our society. If drugs were legal, experimentation and usage of these dangerous and deadly drugs would skyrocket. The usage of alcohol and tobacco is legal, but the usage of drugs should be prohibited in the Unit ed States. A theory is that if a person tries one drug such as marijuana, there is a high likelihood that that person will eventually try a harder drug such as cocaine.This is a very scary thought. If drugs were legal, many more individuals would be trying them. The media would be advertising cocaine like it was voldka. There is a large difference between these two products. People would feel like it was okay to experiment with the drug because its usage was legal. This could be harmful, because everyone can have a different effect to each drug. Drugs such as cocaine and heroin are highly addictive and dangerous. They not only cause damage to the person using but also to surrounding people.I am not trying to undersize alcohol and the damage it can cause, but at least there are laws against driving while intoxicated so that you can prevent yourself from harming another individual. Tobacco use affects your body in the long run, but other than second hand smoke, it does not directly pu t others in danger. Certain drugs can make a person spiral out of control and make them do certain things that they would never do if they were clean. A counter viewpoint is that drugs should be legalized because it is a person choice to use or consume whatever they wish.Advocates of legalizing drugs say that people will use drugs if they have the desire to whether it is legal or illegal. They mention that what is the difference between tobacco and alcohol versus drugs. Alcohol can be just as damaging to other people as drugs can be sometimes. The United States is a free country where we can speak how we feel and do how we feel and no one can tell us how to live our life. They say that if people want to use alcohol, tobacco and illegal drugs, they should have the freedom to do so. Both sides make valid points, but I definitely feel that drug usage would contaminate our society even more.

6 Smart Tips to See Your House the Way It Used to Look

Before old house restoration even begins, save time and money with a little investigation. Ever wonder what your home used to look like before modern improvements? Was there always a wall there? How could your Victorian home have such a modern kitchen? What is that exterior siding covering where the windows used to be?   Over the years, your home may have seen many remodelings. The larger and older your home is, the more opportunities the previous owners had for making substantial changes. Most homeowners like to leave their mark on property in the name of comfort and upgrades — everyone wants improvements. For whatever reasons, every next owner usually has different priorities. Like home ownership itself, remodeling is part of the American Dream for many people  and the opportunities for re-muddling increase as the age and square footage of the house increase. Many people want to restore a home to its original beauty, but how do you do that? Learning about the earliest design of your home can take many months. If you have no blueprints, youll need time to do some serious detective work. These handy tips will help you discover the origins of your old house, inside and outside. Tips to Discover Your Real Home 1. Begin with age. Homeowners think they are buying their own homes as personal property, but any property owner is really buying into a neighborhood of history. How old is your house? How old is the neighborhood? With a deed, the answer may be straightforward. Beginning with this information gives context to your house. 2. Your house is probably not unique. All architecture, including the common home, tells the story of time and place. Building and design are lessons in the history of populations. Put your house in context with how your country was populated. Where do people live in the United States? Consider this basic question: Why was your house built at all? What was the need for shelter at this time and at this place? What architectural style dominated the region at the time? If your home is in a line of houses, stand back across the street and look up — does your house look a little bit like the house next door? Builders very often built two or three houses in a row, efficiently using the same handed-down plans. 3. Learn about the history of your community. Ask your local historian or  ask a reference librarian where to look in your local public library. Does your town or city have a historic district with a historic commission? Anyone interested in houses, including real estate agents, often know a great deal about local builders and housing styles. Visit your neighbors and different neighborhoods. Their homes may mirror yours. Make maps of where houses were built in relation to local businesses, including farms. Was your house part of a farm whose land was split up? What major industries were nearby that may have affected rapid population growth? 4. Find floor plans for your old house. Remember that your old house may never have had blueprints. In the early 1900s and before, builders rarely drew up detailed specifications. The entire process of building was handed down from generation to generation. In the U.S., architecture didnt become a profession until the 19th century and building codes and regulations were rare until the 20th century. Still, research before restoration could ultimately save a lot of time. 5. Look under the rug. Remember the concept of hiding something under the rug or sweeping secrets under the carpet? Its good to remember that much of your homes history is right there in front of you with very little effort — if you know where to look. Unless remodeling was done by a master craftsman, evidence is left behind. Pull up some baseboard or molding to see the finished (or unfinished) flooring edges or wall heights. Measure the thickness of the walls and try to determine if they were built upon each other. Go into the basement and look at the under-flooring to see if its been patched when a new central heating system was installed. Where is the plumbing — is it all in one area, in an addition when a bathroom and kitchen were added? Many complex older homes started off as simple structures and were added to over the years. The architecture of a house can evolve over time. 6. Define your project. What are your project goals? Knowing what you want in the end will help you find a path to get there. Note that many of the words we use to describe the actions we take on a structure begin with the prefix re- which means again.  So, here we go again. Which Method Is Right for You? Remodeling: This often-used word describes a process of making changes to a house with little regard to the history of the home and its environs. The model chosen is at the whim of the current homeowner. Before you remodel your home, establish a checklist for your remodeling dreams. Renovation: Novus means new, so when we renovate we want to make our home like new. This term is generally used to fix a home in disrepair. Rehabilitation: Often abbreviated as rehab, rehabilitation is to restore or fix-up a property while keeping its architectural value. According to U.S. Secretary of the Interior standards and guidelines, you can do this through repair, alterations, and additions while preserving those portions or features which convey its historical, cultural, or architectural values. Restoration: Coming from the Latin word  restauratio, restoration brings the architecture back to a certain time period. The Secretary of the Interiors working definition includes words like accurately depicting the form, features, and character of a property as it appeared at a particular period of time. Methods include the removal of features from other periods in its history and reconstruction of missing features from the restoration period. Does this mean you rip out the kitchen sink and build a new outhouse? No. Even the federal government says its okay to keep code-required work. Source Preservation Terminology, Secretary of the Interiors Standards and Guidelines As Amended and Annotated, https://www.nps.gov/history/local-law/arch_stnds_10.htm