Numerical Modeling

Numerical modeling of communicable disease is a device to understand the instrument of how disease blowouts and how it can be measured. we have studied numerically the dynamics of typhoid fever disease in this paper. We frame an unconditionally stable Non-Standard Finite Difference (NSFD) scheme for a mathematical model of Typhoid Fever Disease. The introduce numerical scheme is bounded, dynamically include and describe the positivity of the solution, which is one of the important requirements when modeling a prevalent disease. The comparison among the developed Non-Standard Finite Difference scheme, Euler method and Runge-Kutta method of order four (RK-4) shows the effectiveness of the proposed Non-Standard Finite Difference scheme. NSFD scheme shows convergence to the true equilibrium points of the model for any time steps used but Euler and RK-4 fail for large time steps. Key Words: Typhoid Disease, Dynamical System, Numerical Modeling, Convergence.Introduction Typhoid fever affects millions of people worldwide each year, where over 20 million cases are reported and kills approximately 200,000 annually. For instance, in Africa it is estimated that annually 400,000 cases happen and an incidence of 50 per 100,000 [5]. The mathematical modeling for transmission dynamics of typhoid fever disease is a capable approach to appreciate the behavior of disease in a population and on this basis, some capable measures can be modeled to prevent infection. Dynamical models for the transmission of disease objects in a human population, based on the Kermack and McKendrick SIR classical epidemic model [1–4], were proposed. These models deliver evaluations for the temporal advancement of infected nodes in a population [5–13]. In this paper we construct an unreservedly convergent numerical model for the transmission dynamics for typhoid fever disease which preserves all the essential properties of the continuous model. We considered the mathematical model of disease transmission in a population that has been discussed by Pitzer in [6]. Mathematical ModelA: Variables and ParametersS(t): Susceptible entities class at time t.P(t): Protected individual class at time t.I(t): Infected individuals class at time t.T(t): Treated class time t.?: The rate at which individuals recruited.?: Natural death rate. ?: Loss of protection rate.?: Rate of infection.?: Rate of treatment.?: Disease induced mortality rate.

Opera Critique Rigoletto

The Metropolitan Opera House at Lincoln Center is home for the world’s most creative and talented artists working in opera. Upon entering the building, the vicinity at Lincoln Center is unique and elegant. Approaching the Metropolitan Opera, a stylish and well-structured water fountain full of water is gushing while the off-white marble floor allures the visitor to the building. Entering the building, the glamorous and sophisticated snowflake-like chandeliers and winding staircase gives the visitor a welcoming feel. Before sitting, the visitor will notice the red carpets and the particular set-up of the theater. As the seats are elevated upward, there are sound cushions to promote a higher quality sound on the side balconies. What felt very informative were the captions in front of the seats, that also were available in other languages, to understand the singers. Guiseppe Verdi’s Rigoletto was written between 1850 and 1851. When the stage is first viewed, it is evident the time frame Verdi had written in. Rigoletto, played by George Gagnidze, is a hunch-baked jester that acts out the part very well. Costumes in the play were very detail- oriented and focused primarily on the way individuals dressed in the 19th century. The stage settings were altered according to Act, which represented very hard work and skill. During Act II, Gilda played by Christine Schafer, and Rigoletto join together in a duet that explains the courtship and Gilda’s abduction. The costumes, although could not be seen up close, were elegant for the time period. Rigoletto is dressed during this Act in a white, somewhat formal shirt beneath his regular vest – which was a dark brown, along with white tights underneath knee length shorts. As opposed to how individuals dressed today, it seemed outlandish but well- designed. The opera singers and orchestra had the most contribution to the performance. The pitch and vocals of the performers proved to be rich with character insight. Rigoletto contains a wealth of musical empowerment and melody. As the conductors of the orchestra are observed, it is apparent the time and practice placed into the performance were well spent. Compared to modern music, the orchestra conducted music that was pleasing to the ear that gave a new cultural view of other genres of music. Overall, the performance of Rigoletto at the Metropolitan Opera House at the Lincoln Center was an enriching experience. After only viewed one other play, The Christmas Music Spectacular at Rockefeller Center, it certainly offered a cultural background for the Italian culture. The theater itself was definitely an exquisite and elegant building that often is not found in the local area. The performance was an excellent portrayal of the 18th century as far as costumes and stage set-up while the musical aspect depicted the inspired drama set in Rigoletto. This experience has given an eye-opener to a different genre of music while setting an appreciation for other cultures.

Recommendation Letter Manager for Part-Time Employee

Recommendation Letter Manager for Part-Time Employee SAT / ACT Prep Online Guides and Tips Not all of the candidates asking for a recommendation letter are full-time or long-term employees. Even if you're writing for a part-time or temporary worker, you can still give great insight into his work performance and strengths. In the sample letter below, a restaurant manager recommends a server who worked during summers off from college. The candidate's looking to move into his first full-time job after graduation. Read on to learn what this restaurant manager has to say. Sample Letter #3: Written by a Manager for a Part-Time Employee Ms. Talia RichardsonRestaurant ManagerTapea Restaurant Group56 Main St.Centreville, VA 20122 Dear Ms. Richardson, It’s my pleasure to provide this letter of recommendation for Charlie, who worked as a server at Solera Restaurant for the past two summers. As Charlie’s direct manager who worked closely with him throughout his time here, I was impressed with his work ethic, friendly personality, and ability to work well under pressure. As he graduates from Johnson Wales with a degree in Hospitality Management, I’m confident that he has the skills to do well as an Assistant Restaurant Manager with Tapea Restaurant Group. As a server at Solera, Charlie demonstrated superlative customer service. Our clientele is a mix of long-term patrons and visiting tourists, and Charlie was personable and professional toward all. Even when things got hectic during peak business hours, Charlie kept up his energy level and attention to detail. I recall one instance when the kitchen was backed up and a table complained about how long they had to wait for their food. Charlie listened to their concerns and offered them free desserts to ensure that they left feeling positive about their dining experience. Charlie is thorough, friendly, and helpful, all qualities that made him an excellent addition to our staff. To learn more about hospitality management, Charlie set up meetings with me throughout the summer to discuss my responsibilities as Restaurant Manager. We talked about staff training and supervision, budget management, licensing, safety guidelines, administrative records, and business promotion, among other key parts of the job. Charlie brought a lot of knowledge to the table and quickly picked up new tricks of the trade. Between his classes at Johnson Wales and practical experiences, he has a clear sense of the responsibilities of managing a restaurant. Last summer, Charlie went above and beyond the call of duty to help us host large functions. In particular, he assisted in planning a graduation party for over 60 people and a bat mitzvah for 75. Charlie gave his input on menus and assistance in ordering supplies and overseeing stock levels before the events. Charlie also worked as a server, handling a large volume of requests during a precisely timed event. He proved himself to be a key asset in planning the functions and making sure everything ran smoothly. If we had any assistant managerial positions available at Solera, Charlie would be the first person I would call. Charlie has my highest recommendation for the position of Assistant Restaurant Manager. He consistently impressed me and the rest of the staff with his work ethic, customer service, and burgeoning managerial skills. Please don’t hesitate to contact me for any further information. Thank you for your time. Sincerely, Janet ChildRestaurant ManagerSolera Restaurantjchild@solera.com(866) 811-5546 Want to provide a strong recommendation for your employee, but don't have the time to craft the perfect letter? PrepScholar's new recommendation tool, SimpleRec, takes you from good intentions and a blank page to a fully written and formatted letter of recommendation in under 5 minutes. All you need to do is give us some simple pieces of information about your employee and your experience working with them, and we'll do the rest. Try out SimpleRec risk-free today: Will this recommendation letter help Charlie line up a job for after graduation? Recommendation Letter #3: The Breakdown This letter represents one written by a manager for a part-time employee. In this case, the part-time employee is about to graduate from college and is applying for his first position in his chosen field. The recommendation letter plays an important role, therefore, in showing that he’s ready to take on this new job. As a restaurant manager herself, Janet Child is a great source for Charlie’s recommendation letter. She starts by describing his customer service skills as a server at Solera. Then she focuses on the ways in which he’s qualified to become an Assistant Restaurant Manager. Janet describes how Charlie furthered his education by meeting with her to learn about the responsibilities in restaurant management. She also discusses his behind-the-scenes help in planning and hosting large functions, a responsibility that he would have to take on as Assistant Manager with Tapea. Janet uses highly positive language, as well as specific examples, to demonstrate Charlie’s skills in the field of hospitality management. She makes her recommendation letter especially strong by stating that she would hire him herself if Solera had any positions available. Her letter will certainly be a boon to Charlie’s application as his reviewers determine whether or not he’s ready to step into the position of Assistant Restaurant Manager. What's Next? Are you ready for another sample recommendation letter? Click here to read a manager's reference letter for a freelance web designer! Are you looking for our full guide on recommendation letters? Check out our reference letter guide to learn about what goes into a good letter and find eight more samples. Want to provide a strong recommendation for your employee, but don't have the time to craft the perfect letter? PrepScholar's new recommendation tool, SimpleRec, takes you from good intentions and a blank page to a fully written and formatted letter of recommendation in under 5 minutes. All you need to do is give us some simple pieces of information about your employee and your experience working with them, and we'll do the rest. Try out SimpleRec risk-free today:

Cannery Row-fiction paper essays

Cannery Row-fiction paper essays Mack wasted no time with small talk, Lee, he said, Doc over theres got a problem. He needs me and the boys to go and gather up 300 frogs for an order hes got. We need to borrow your truck, so we can go to Carmel Valley. Lee was reluctant but gave into the proposition; however, Doc had been a tremendous customer throughout the years; Lee felt he owed it to Doc to help him out wherever he could. Mack and the boys packed up to begin their road trip, destination: Carmel Valley. Mack knew around where their destination lie. As the trip commenced they became consumed in the chatter of how their money would be spent. Doc was to give them 5 cents for every frog they captured and returned to him. All the boys determined that the money was to be spent on a party for Doc, to thank him for being such a great guy. They chatted with excitement as their imaginations ran wild, thinking up extravagant party ideas. In the bed of the truck lied a 5-gallon-jug of whiskey; that Eddie had brought from the bar. As they drove, they began to take drinks, in hope of making the trip more enjoyable. Somewhere along the line Mack thought it would be a good idea to take a short cut; he thought he remembered from the last time he went to Caramel Valley, with Doc. The road came to end where a bridge lay broken, washing down the river. They were at a dead end. Gay being the bright man, who he was, talked all the boys into thinking that the car could make the jump if they got enough speed. Instructing them that, if we get enough speed, we can make this here jump, and it will save us a day of backtracking. The boys went along with this idea, deciding after a couple more drinks that backtracking sounded as though it required actual effort. They put the truck in reverse moving as far back as possible, accelerating as fast as their car would permit. Barely breaking 55, they made it across the jump. However,...

Making a video in ESL class

Making a video in ESL class Making a video in English class is a fun way to get everyone involved while using English. Its project based learning at its best. Once you finish, your class will have a video to show off to friends and family, theyll have practiced a wide range of conversational skills from planning and negotiating to acting, and theyll have put their technological skills to work. However, making a video can be a big project with lots of moving pieces. Here are some tips on how to manage the process while involving the whole class. Ideation Youll need to come up with an idea for your video as a class. Its important to match class abilities to your video goals. Dont choose functional skills that students dont possess and always keep it fun. Students should enjoy and learn from their experience filming, but not be too stressed out about language requirements as theyll already be nervous about how they look. Here are some suggestions for video topics: Study Skills - Students can break into groups and produce a scene about a specific study skill, or a tip on how to study.Functional Skills - Have students create scenes focusing on functional skills such as ordering at a restaurant, job interviewing, leading a meeting, etc.Grammar Skills - Students can include slides asking the viewer to pay attention to specific structures and then act out short scenes focusing on tense usage or other grammar points. Finding Inspiration Once youve decided on your video as a class, go to YouTube and look for similar videos. Watch a few and see what others have done. If youre filming something more dramatic, watch scenes from TV or a movie and analyze to gain inspiration on how to film your videos. Delegating Delegating responsibilities is the name of the game when producing a video as a class. Assign individual scenes to a pair or small group. They can then take ownership of this part of the video from storyboarding to filming and even special effects. Its very important that everyone has something to do. Teamwork leads to a great experience. When making a video, students who dont want to be in the video can take on other roles such as editing the scenes with a computer, doing make-up, making voice overs for charts, designing instructional slides to be included in the video, etc. Storyboarding Storyboarding is one of the most important tasks in creating your video. Ask groups to sketch out each section of their video with instructions on what should happen. This provides the roadmap for the video production. Believe me, youll be glad youve done it when editing and putting together your video. Scripting Scripting can be as simple as a general direction such as Talk about your hobbies to specific lines for a soap opera scene. Each group should script a scene as they see fit. Scripting should also include any voiceovers, instructional slides, etc. Its also a good idea to match the script to the storyboard with snippets of text to help with production. Filming Once youve got your storyboards and scripts ready, its on to filming. Students who are shy and dont want to act can be responsible for filming, directing, holding cue cards, and more. Theres always a role for everyone - even if its not on screen! Creating Resources If youre filming something instructional, you may want to include other resources such as instructional slides, charts, etc. I find it helpful to use presentation software to create the slides and then export as .jpg or other image format. Voiceovers can be recorded and saved as .mp3 files to add to the film. Students who arent filming, can work on creating resources needed or each group can create their own. Its important to decide as a class which template youd like to use, as well as image sizes, font choices, etc. This will save a lot of time when putting together the final video. Putting the Video Together At this point, youll have to put it all together. There are numerous software packages that you can use such as Camtasia, iMovie, and Movie Maker. This can be quite time consuming and aggravating. However, youll probably find a student or two who excel in using storyboarding software to create complex videos. Its their chance to shine!

Stress and coping Essay Example | Topics and Well Written Essays - 2750 words

Stress and coping - Essay Example Again sometimes certain happy occasions are considered â€Å"stressful†. For instance the birth of a child, moving to a new house, or promotion in the workplace may prove to be stressful. This may be because one is not prepared to deal with such events. Stress is personal and there are different forms and levels of stress. How one copes with stress varies from individual to individual. Each individual looks at a situation differently and hence copes with it differently. Often people react to situations with fear and anxiety, all signs of stress, because these situations had caused stress in the past. For instance a student who has failed in an examination may feel stressful the next time he takes an examination. Every individual exhibits different coping skills. Hence two persons will not respond to a situation in exactly the same way. If a person responds to stress in a negative way it may affect health and happiness. By understanding the stress inducing situation and responding accordingly one can handle stress effectively. Today in the modern world life is full of demands, worries and frustration, all causing a certain amount of stress. Stress has almost become a way of life. Stress per se is not bad. In small amounts it may motivate you and help you to perform better. But when a person is constantly under stress it may affect his mind and body. According to Hawkins (1994), â€Å"†¦too much or too little stress can have deleterious effects on performance with resultant effects on the health of the individual and the organization.† Again, the impact of stress on health depends on our perception of the event that causes stress and how we react to the situation. Sometimes an event may motivate or even energize us. For instance events such as taking a vacation or winning a game may energize you. Sometimes we may perceive an event as stressful and react to it in a way that can have a negative effect on our mental and physical health.

Research Paper Example | Topics and Well Written Essays - 1500 words - 7

Research Paper Example All these are geared towards promoting food security. However, genetically modified foods have raised great debate in the recent past over their impact on human health. The two main areas of concern are risk to human health and risk to the environment. This paper seeks to look at the health benefits of genetically modified foods and also the disadvantages of these foods. Pathogens, herbivorous insects, and parasites have significantly reduced crop yields all over the world. Given the fact that the population is increasing, traditional crops cannot sustain the world population because of the above threats. GM crops have been introduced to help abate this problem. Examples of crops grown in this case are virus resistant genetically modified papaya and insect resistant crops having Bacillus thuringiensis gene. This has been successful in the United States; insect resistant GM maize is grown on an area of about 10.6 million hectares and represents 35 percent of all the maize grown in the country. The resistance has also been enhanced to include bacterial and fungal pathogens. With reduction in crop loss due to pathogens, insects and parasites, more yields can be achieved and this can reduce malnutrition (Key, Ma and Drake 292). Another issue that has caused reduction in the crop yields is abiotic stress which includes low or high temperatures, drought, and salinity. It is projected that in the coming years these losses will increase due decline in water resources and desertification. Salinity and drought are expected to increase salinization of arable lands. This calls for adoption of new technology that will ensure there is crop survival. There have been attempts to produce abiotic stress resistant genetically modified foods. However, there has been no break through yet and the research is still at laboratory level. In