Cool Things to Do With Dry Ice - Chemistry

Cool Things to Do With Dry Ice - Chemistry Dry ice is the solid form of carbon dioxide. It is called dry ice because its frozen, yet never melts into a liquid. Dry ice sublimates or makes the transition directly from frozen solid into carbon dioxide gas. If you are lucky enough to get some dry ice, there are lot of projects you can try. Here are some of my favorite cool things to do with dry ice. Homemade Dry Ice - First you need dry ice, so if you dont have any, make it! Dry Ice Fog - The classic project is to put a chunk of dry ice in hot water, causing it to produce clouds of vapor or fog. Dry Ice Crystal Ball - Place a piece of dry ice in a bowl or cup containing bubble solution. Wet a towel with bubble solution and pull it across the lip of the bowl, trapping the carbon dioxide into a giant bubble that resembles a crystal ball. Frozen Bubble - Freeze a soap bubble over a piece of dry ice. The bubble will appear to float in the air over the dry ice. Fizzy Fruit - Freeze strawberries or other fruit using dry ice. Carbon dioxide bubbles become trapped in the fruit, making it fizzy and carbonated. Singing or Screaming Spoon - Press any metal object against a piece of dry ice and it will appear to sing or scream as it vibrates. Dry Ice Ice Cream - You can use dry ice to make instant ice cream. Because carbon dioxide gas is released, the resulting ice cream is bubbly and carb onated, sort of like an ice cream float. Dry Ice Bubbles - Place a piece of dry ice in bubble solution. Fog-filled bubbles will form. Popping them releases dry ice fog, which is a cool effect. Simulate a Comet - Simulate a comet using dry ice and a few other simple materials. It will even produce a tail like a real comet. Dry Ice Jack-o-Lantern - Make a cool Halloween jack-o-lantern that spews dry ice fog. Dry Ice Erupting Volcano Cake - While you cant eat dry ice, you can use it as a decoration for food. In this project, dry ice produces a volcanic eruption for a volcano cake. Dry Ice Bomb - Sealing dry ice into a container will cause it to burst. The safest version of this is to place a small piece of dry ice into a plastic film canister or potato chip can with a pop lid.Inflate a Balloon - Seal a small piece of dry ice inside a balloon. As the dry ice sublimates, the balloon will blow up. If you use too big a piece of dry ice, the balloon will pop!Inflate a Glove - Similarly, you can put a piece of dry ice into a latex or other plastic glove and tie it closed. The dry ice will inflate the glove. Dry ice is a lot of fun to play with, but it is very cold, plus there are other hazards associated with it. Before attempting a project involving dry ice, be sure you are aware of dry ice risks. Have fun and be safe! Dry Ice Facts | Dry Ice Science Fair Projects

Children with special needs in Australia Essay Example | Topics and Well Written Essays - 1000 words

Children with special needs in Australia - Essay Example Most of the times, children with special needs from all over the world are deprived of education. It must be realized that they too need education as much as, or even more than, the children without special needs do. They need this education for the following reasons. Equal Right to Education. It is said that â€Å"education prepares individuals to be self-reliant and self-sufficient participants in society† (Rothstein & Johnson, 2010, p. 69). Children with special needs are already unable to do many things due to their handicap. They need to have, at least, the basic education to lessen instances of untoward further deprivation of â€Å"social, economic, intellectual, and psychological well-being† in the future (Rothstein & Johnson, 2010, p. 69). Their case, however, require a more intense educational techniques and strategies for them to reach their full potential. Improve their Focus. Normally, children are easily distracted. Children with special needs more often have worse cases. They lack focus and are inattentive most of the times (Bainbridge, n.d.). Special education instructors are packed with different ways to deal with this inattentiveness that can improve their focus while they are taught with reading and solving math problems (AutoSkill, n.d.). Many other academic progresses are told to be seen in children attending special education. Interaction. Being as they are, children with special needs are continually facing social issues that deny them the chance to interact with other people (Hart, 2009). When children are put in a classroom with other children with or without disabilities, they will be able to learn ways on how to react on different situations with other people. Children with special needs interacting with other children with special needs will improve their self-worth by seeing that their differences are accepted and it is fine to be who they are. On

Operating System Assignment Example | Topics and Well Written Essays - 750 words

Operating System - Assignment Example Thirdly, it ensures that there is as little as possible the amount of damage that errant programs are likely to cause. Therefore, the protection mechanisms are either tools or procedures for the enforcement of the security policies while protection policies encompass what is allowed and those that are prohibited, while using a computer system (Whitman & Mattord, 2009). An access matrix is a protection security model which contains columns representing varied system resources; and the rows representing varied protection domains. Implementation is executed with reference to: domain, objects and rights entries. The model uses a lock-key mechanism where each resource is linked to a unique lock (bit patterns). Each domain has a specific bit pattern known as a key. Access is only granted if a domain key fits a resource lock. Moreover, modification of its own keys is not allowed. Every column of the table is kept as an access right for the specific object in order to discard blank entries. Every row is maintained as a list of a domains capability (Whitman & Mattord, 2009). The capabilities lists cannot be directly accessed by any user or by the domain because they are protected using a tag and an address space which can further be segmented. Based on Whitman & Mattord (2009) a computer virus is a program-code that attaches itself to an application so as operate concurrently while the application is running. A worm is a program that replicates itself in order to consume the host’s genetic code and mechanism. A virus attaches itself to a particular file or an opened program while a worm exploits the weakness an operating system or an application in order to duplicate itself. A virus relies on user(s) so as to spread the infected programs or files to other computer devices while a worm uses networks to duplicate itself to other computer devices without the help of user interventions. A virus can modify, delete or change the

Designing The Perfect Leadership Development Experience Education Essay

Designing The Perfect Leadership Development Experience Education Essay Leadership development is improving the qualities of leadership. This can be achieved by Planned and systematic efforts (Groves, 2007 cited in Amagoh, 2009). Leadership development programme is similar to the learning organization concept which focus on facilitating change, empowerment, knowledge sharing, opportunities for learning development and promotes leadership development. (Amagoh, 2009) Nowadays companies struggle with leadership development. They send the top performing employees to attend few leadership development workshops seminars and expect the participants to be the leaders in a week or so. This does not work as expected since personals have different characteristics and abilities. National wide financial have found four kinds of people who engage in this type of development programmes. They are reluctant leaders who have all the necessary skills to be a manager but not confident that they would be effective leaders. Second type is arrogant leaders who believe they have all the leadership skills but lack those skills. Third category is unknown leaders who have the right leadership skills but since they are not good at developing relationship, they fail to be selected as effective leaders. Finally the workaholics which we come across very often (Griffin, 2004). In my individual leadership development programme I have to first identify myself among the four types. Even though occasionally I have played the role of a leader, it makes me to think whether I could be in a leaders position of an organization? This more sounds like a reluctant leader. Initializing the development programme can be based on major leadership traits, which are intelligence, self-confidence, determination, integrity and sociability. Intelligence Studies found that leaders have higher intelligence compare to non-leaders (Zaccaro, Kemp and Bader, 2004, cited in Northouse, 2007). Intelligence helps in solving the critical problems effectively. I believe intelligence partly come from birth and partly by continuously involved in activities which could boost it. This can also be acquired by observation. Self-confidence This is one area which I focus to improve that in turn will help in chairing an organization. Leadership is all about influencing the followers in order to achieve the vision. Self-confidence is necessary to assure that the way leader influence is appropriate. Determination This includes initiative, persistence, dominance and drive (Northouse, 2007, p. 20). Determination will direct the followers in a desirable path in order to achieve the vision. Integrity This refers to honesty and trustworthiness. Developing the integrity skills will enable confidence in others, which in turn enables delegation, and thereby followers feel ownership and motivated. Sociability Leaders one of the main tasks is to develop and maintain relationships within and outside the organization. Therefore, skills such as being friendly, outgoing, courteous, tactful and handling issues diplomatically are essential to be an effective leaders. Stevens, (n.d. p.42) says managers wear square hats and learn through training. Leaders wear sombreros and opt for education. Some of the learning through education to become an effective leader are understating, generating ideas, questioning, looking for processes rather than content, initiating strategies, long term focus, risk taking, open minded, skill of imagination, etcà ¢Ã¢â€š ¬Ã‚ ¦ therefore the leadership development programme should highlight the above aspects. Bennis, (2009,) says on becoming a leader the first thing is to identify is knowing yourself. He has also identified four lessons of self-knowledge (Bennis, 2009, p.52) You are your own best teacher Accept responsibility. Blame no one You can learn anything you want to learn True understanding comes from reflecting on your experience I would say the basic mantras for me to become a leader will be the above four lessons. I would also use integrated solution approach and some other common senses. Integrated solution approach This includes eight steps (Weiss and Molinaro, 2006, cited in Amagoh, 2009). Developing a comprehensive strategy for development Designing the development activities according to organizational and global challenges. For example, compare to the earlier days the social interaction among different nationalities are a must in order to perform as an effective leader. Being in Dubai, in a routine basis we would meet around 180 nationalities where each of them are different. According to Bennis (n.d., cited in The emirates center for strategic studies and research, 2002) the new leadership should understand and practice the power of appreciation, keep remind the people of what is important and generate sustain trust. Use the leadership stories. This is one of the excellent learning which I consider. Reading and understanding different leaderships styles and world-class leaders way of leading will help in enhancing the skills of leadership. Understanding both global and local individuals needs. Using emergent design and implementation will also enable development. Understanding the culture. Focusing on critical moments of leadership life cycle. Applying a mix of methodology will enable development. On top of the above, importance have to be given for personal growth, understanding the concepts, learning through feedbacks and mistakes, skill building, etcà ¢Ã¢â€š ¬Ã‚ ¦ will also enable development (Allen and Hartman, 2008, cited in Amagoh, 2009). In answering, How would you know it was effective, I would say if the leadership effectiveness is achieved, it is obvious that leadership development plan was effective. And on the other hand we should also understand leadership development is not one time learning rather it is an ongoing learning process. Therefore, any inefficiencies or neglected skills once identified can be learned. The way we do business around the globe has changed in past dramatically and it is also evidence that the change is continuing. To cope up with the challenging dynamic world leaders has to continuously sharpen their skills. One of the example which I would quote is the professional organizations like CIMA (UK) and ACCA (UK) have introduced programmes called CPD (continuing professional development) to keep members connected with the current and changing world. Leadership effectiveness can be defined as successfully influencing followers in order to achieve the organizational vision (Vardiman et al, 2006; Bodinson, 2005 cited in Amagoh, 2009). Effective leadership is one of the competitive advantages of an organization. In addition, the effective leader determines the organizational performance and growth who are expected to establish vision and strategies, maintain relationship and manage change in order to ensure the organizational growth and survival within the competitors. In conclusion, leadership development programme has to be designed by considering various aspects and skills needed to be an effective leader. In addition, continues progress monitoring and identifying lacking skills will enable to plan the next step of the development programme. We should also understand and accept the fact leadership development is not a one time learning but it is a lifelong learning. Sangeeven

The Disabling Effects of Selective Mutism Essay -- Disorder Mutism Chi

The Disabling Effects of Selective Mutism Among the vast range of anxiety induced disorders that exist, Selective Mutism may be the most disabling to its victims. It has been estimated that approximately one in a thousand children suffer from this presumed psychiatric ailment wherein the ability to speak is limited to the household or other areas of comfort. (2) Public places and schools elicit so much anxiety within these children that their natural capacity to speak is suppressed. Once a child under five years of age exhibits the behavior described, for over a month, and without having other speech impeding barriers affecting them such as autism or a second language, he or she will most likely be diagnosed with selective mutism. (2) Many hypotheses have been posed as to what causes selective mutism, however, no determinate conclusions have been made. In most cases it has been proven that anxiety disorders are hereditary, thus, nearly all children who become selectively mute have family members who were afflicted with the same or more serious anxiety disorder, like obsessive compulsive disorder, schizophrenia, or social phobia. The fact that anxiety disorders pass through generations implies that brain chemistry is perhaps genetic or that serotonin levels are inherited. Other suggested causes of selective mutism have been speculated upon, however, little research has been instated. Abuse, neglect, extreme shyness, extremely embarrassing experiences like vomiting or having diarrhea in a classroom setting, or living in a home environment with exceptionally nervous parents may also lead to become selectively mute. These theorized causes tend to describe the background of children who have no similar disorders r unni... ...e Mutism Foundation, a support sight to better understand the disorder http://www.cisinternet.net/errorpages/404.shtml 3)Philadephia Page, a site with excerpts about selective mutism from the Philadelphia Inquirer https://registration.philly.com/reg/login.do?url=http://www.philly.com%2Fmld%2Finquirer%2Fliving%2Fhealth%2F3939354.htm 4)Selective Mutism UK, an interesting article about the seriousness of selective mutism http://www.selectivemutism.org/smg/ukarticle.htm 5)Anxiety-Panic Website, a site which describes several other anxiety disorders http://anxiety-panic.com/dictionary/en-dicts.htm 6)Mental Health web page, a helpful site providing several articles about selective mutism http://www.mental-health-matters.com/ 7)Anxiety Network, illustrates well the treatment available for those selectively mute http://www.anxietynetwork.com/spsm.html The Disabling Effects of Selective Mutism Essay -- Disorder Mutism Chi The Disabling Effects of Selective Mutism Among the vast range of anxiety induced disorders that exist, Selective Mutism may be the most disabling to its victims. It has been estimated that approximately one in a thousand children suffer from this presumed psychiatric ailment wherein the ability to speak is limited to the household or other areas of comfort. (2) Public places and schools elicit so much anxiety within these children that their natural capacity to speak is suppressed. Once a child under five years of age exhibits the behavior described, for over a month, and without having other speech impeding barriers affecting them such as autism or a second language, he or she will most likely be diagnosed with selective mutism. (2) Many hypotheses have been posed as to what causes selective mutism, however, no determinate conclusions have been made. In most cases it has been proven that anxiety disorders are hereditary, thus, nearly all children who become selectively mute have family members who were afflicted with the same or more serious anxiety disorder, like obsessive compulsive disorder, schizophrenia, or social phobia. The fact that anxiety disorders pass through generations implies that brain chemistry is perhaps genetic or that serotonin levels are inherited. Other suggested causes of selective mutism have been speculated upon, however, little research has been instated. Abuse, neglect, extreme shyness, extremely embarrassing experiences like vomiting or having diarrhea in a classroom setting, or living in a home environment with exceptionally nervous parents may also lead to become selectively mute. These theorized causes tend to describe the background of children who have no similar disorders r unni... ...e Mutism Foundation, a support sight to better understand the disorder http://www.cisinternet.net/errorpages/404.shtml 3)Philadephia Page, a site with excerpts about selective mutism from the Philadelphia Inquirer https://registration.philly.com/reg/login.do?url=http://www.philly.com%2Fmld%2Finquirer%2Fliving%2Fhealth%2F3939354.htm 4)Selective Mutism UK, an interesting article about the seriousness of selective mutism http://www.selectivemutism.org/smg/ukarticle.htm 5)Anxiety-Panic Website, a site which describes several other anxiety disorders http://anxiety-panic.com/dictionary/en-dicts.htm 6)Mental Health web page, a helpful site providing several articles about selective mutism http://www.mental-health-matters.com/ 7)Anxiety Network, illustrates well the treatment available for those selectively mute http://www.anxietynetwork.com/spsm.html

Port scans and ping sweeps Essay

Regarding your recent request about more information on ping sweeps and port scans, I am going to provide you with some information to help you with any confusing that you may have. Port scans and ping sweeps are networking tools that admins use to perform normal and common functions such as, checking server to see if it is running correct or to determine with services are open so they can receive important updates. Hackers use the same function which can provide a hacker with information. Port scans, like I stated earlier, are used to discover what services are running on a certain machine. Each service offered by our servers makes user of ports by which TCP/IP requests are sent. Hackers use this information to determine what types of vulnerabilities they can use; this is why the only ports that are open are the ones that we are using. By keeping all other ports closed this keeps hackers from opening other unnecessary openings. Ping sweeps are often used in combination with Port scans, similar process. Ping sweeps are used to see what targets are available on the network. For instance, we may be on a 192.168.1.0 vlan with only a few computers. The router or DHCP server will assign each machine with its own IP address in order by request, by doing this the IP address can get out of order. A Ping sweep of the IP range 192.168.1.1 – 192.168.1.99 would show the computers are currently on the network. Hackers do this to gain as much access as possible. Port scans and Ping sweeps are something that everyone should know about and know what they do. These are something that every company should worry about. These are the most common ways that hackers will get information from other computers. One of the first things you can do in order to block unauthorized access to it, is to block unneeded ports on your computer, and disable applications that are not really needed and that can be risky for your computer. It is highly recommended to install a software firewall on your computer, or at least a port blocking utility.

Autism The Needs of Children and Families Free Essay Example, 3750 words

7). Severe autism, Asperger Syndrome and Pervasive Developmental Disorder Not Otherwise Specified (PDD-NOS), also known as atypical autism, are three developmental disabilities that make up the spectrum (National Institute of Child Health and Human Development 2008). Characteristics As discussed earlier, severe autism is a part of a spectrum in that this autistic child may exhibit these types of characteristics, at a certain level, while another might have a different set of characteristics at another degree. Furthermore, the impairments that autism presents may have different effects on different children (The National Autistic Society 2008a). In order to distinguish between the three different disorders belonging to ASD, the triad of impairments must be discussed, as this is the primary standard wherein diagnoses are most often based. However, it must be noted that there are other characteristics of autism other than the three that will be discussed. They are: sensory processing problems (eg. hypersensitive and hyposensitive); motor dysfunctions (eg. clumsiness); arousal/activation problems (high emotional reactivity, hypersensitivity and hyposensitivity); repetitive, restricted and stereotyped interests, activities and behaviors; and behavior problems (eg. n on-compliance and aggression) (Whitman and Kingsley 2004, p. We will write a custom essay sample on Autism: The Needs of Children and Families or any topic specifically for you Only $17.96 $11.86/pageorder now 52). These are but a few of the specific characteristics of autism that are not included in the triad of impairments—things that parents and families with autistic children and adults should also watch out for. The Triad of Impairments The triad of impairments is the three primary areas most affected by autism. These are verbal and non-verbal communication, reciprocal social interaction and restricted repetitive and stereotyped patterns of behaviour, interests and activities or more generally known as social communication, social interaction and social imagination, respectively (The National Autistic Society 2008b). Social Communication Those within the autistic spectrum disorders usually cannot communicate effectively using verbal and non-verbal communication. Examples of common speech problems of autistic individuals are: (1) echolalia or just repeating what the other person is saying; (2) repeating specific phrases that they have associated with a particular action or request, failing to integrate the use of correct pronouns, for instance, saying â€Å"Do you want milk? † instead of â€Å"I want milk; † and (3) Missing necessary articles that link words to form coherent sentences, for example, saying â€Å"want drink milk† instead of â€Å"I want to drink milk† (Gillson, 1999).