Friday, November 15, 2019

Defining The Input And Output Devices Computer Science Essay

Defining The Input And Output Devices Computer Science Essay In the Airline, input and output devices are significant equipment to operate the information system. Input devices are hardware components that enable users to interact with the computer and used to transfer data from outside world to computer system. Without input devices, you would not able to feed instructions to a computer. The most common input devices are mouse, keyboard, scanner, webcam, touch screen, microphone and so on. Another input devices are not apply on Airline. Output devices are any peripheral that receives or displays output from a computer. It is also data processing carried out by information in either visual or auditory format to show at equipment. The most common output devices are monitor, printer and speaker. 2.2 The input and output devices communicate with computer Nowadays, the Airlines Company uses the advanced technology to operate with smoothly. Input devices can divide up to pointing devices, pen-based computing, voice recognition and optical scanning. In pointing devices, keyboards are a most commonly devices for entering data and text to the computer system. Pointing devices benefits have issuing commands, making decision and responding immediately display on monitor screen or printer (MBA Knowledge Base, 2010). For example, counter girl make use of keyboard to input the passengers personal information and confirm the passengers seats. It can manipulate simply and reduce the wrong information. Besides that, electronic mouse is the most popular pointing devices to move the cursor on the screen, likewise make icon and menu selections (MBA Knowledge Base, 2010). Passengers can use the mouse to activate various activities selected to check the information they needs. Touch screen also a device can use the computer to touch the surface to dis play on the screen. The computer senses the point in the grid where break occur and respond with propriety feedback. There are many touch screen system set up in the waiting hall for passengers use. Pen-based computing are most being used in many personal digital assistants. The PDA has fast processers and software that recognizes of handwriting. It can substitute of writing on paper to the screen seem send e-mail, make selections and enter hand written data into the main computer (MBA Knowledge Base, 2010). For example, the Airlines Companyà ¢Ã¢â€š ¬Ã¢â€ž ¢s supervisor can send some minor and emergency message to inform headquarters. Voice recognition is the easiest way for data entry, world processing and conversational computing. It is most natural method to communicate with computer. Voice input has become a new trend and convenience technology to use. Voice recognition systems analyze and classify speech or vocal tract patterns and convert them into digital codes for entry into the computer system. Basically, voice recognition system is being require training recognize the voice to differentiate and achieve high degree accuracy. So the voice recognize system have huge vocabularies to provide help to support the system. Another, speaker-independent voice recognition systems also enable understand few word from the voice it has never heard before (MBA Knowledge Base, 2010). For illustration, telemarketing surveys, stock quotations services, airlines ticket-booking systems and account balance inquiries. The advantages of using voice recognition system is permit operators entry data without using hands to key in data and write down data in paper, they can provide the data as fast as possible and more exact input. Optical scanning devices read text or graphics and convent them into digital input to the computer. There are many types of optical scanners; they are use photoelectric devices to scan the characters. Compact desktop scanners have cheaper and ease for personal computer so they are more popularize. In addition, flatbed scanners are faster and provide higher revolution color scanning but it is larger and more expensive than another optical scanner (MBA Knowledge Base, 2010)s. For example, airport use the optical scanners to scanning the passengers airlines tickets to confirm the passengers personal data. It also can make sure passengers check in to the passengers compartment. Other that, output devices is most information from the computer to export visual or auditory format such as printer, speaker, monitors and other wise. The purpose of the output devices is to translate the data to information for computer user. There include visual response, sound and media devices. Monitor is hardware to display visual output for the user. The images use video card processes to shows as monitor. Monitor and video card quality is identify how the definition of images. Video card just affect the images not related with word and office work (Lysis, 2010). The airlines companies set up the monitor on every seat for passengerà ¢Ã¢â€š ¬Ã¢â€ž ¢s entertainment and inquire about location of flying. It is customer services and facilities to passengers on the way. Speaker is hardware to output the sound for the user. Speaker and sound card are use at the same time, there are depend quality of this two component to give determine the detail. This type of sound setup is used by multimedia creators (Lysis, 2010). For example, airport have many speaker set up in anywhere, they can utilize the facilities to inform importance message to all the people in airport. Printers are an external hardware device to taking computer data and generating a hard copy data. There have matrix ribbon printers, matrix ink-jet printers and laser printers. Laser printers are the most common use in Airlines Company (Lysis, 2010). For example, they are using printers to print out some news or airline tickets. Owing to the world goes on the green campaign, so there are many company apply the technology to reduce in paper and globosity resources. 2.3 Input and output devices provide a high-level implemental environment in customer services Nowadays, Input and output devices provide a high-level implemental environment for the airlines company services. Competition in the airlines industry is at all-time high, challenging providers to reduce costs while improving quality (Nelson publishing, 2000). In this environment, airline companies strive for attractive customers and carry though exist customers. It is more challenging and arduous works. National Airlines has experienced tremendous success meeting the high demand for air travel to and from Las Vegas (Fred Crescente, 2000). They use cost- effective interactive voice response (IVR) to advance the customers services and growing the support system for customers. IVR offers National Airlines the flexibility to leverage in-house Web- development staff to speedy develop and response new voice application as soon as possible. This tool is increase the customers demand and enhance the competitive promotions. Input and output devices have increased overall sufficiency though lower costs. Callers requiring immediate and timely flight information can now access data instantly, with virtually no time spent waiting for an agent (Crescente, 2000). Input devices can provide the customers booking airlines ticket faster than service counters. Besides that, customers also can use the internet to booking tickets and get a new promotion. Output devices is perform to company understand the customer demand. They can satisfy the customerà ¢Ã¢â€š ¬Ã¢â€ž ¢s request to achieve the target of company. In between, input and output devices need to balance the company supply and customer demand. Customer services is important part of Airline Company, it can represent the airlines image. 2.4 Conclusion In conclusion, we understand the input and output devices perform a significant role in information system. It can help the users to communicate with the internet. The internet can share the new information to whole country people. Input devices are tools to input the data into the computer to make process. Output devices are passing by the data processed to display the information for reference. Base on my understanding, airline companies are using the technology devices to improve the implement and speed. Airline Company interacts with the airport to achieve the best customer services. Customers will be enjoys the flies from the beginning and the end. No matter the any problem was occur, they also can manage it by information system. In my opinion, Airline Company may increase the internet customer services because can reduce the paper work to reach go green on the world. The information system with technology is more modernize in this era.

Wednesday, November 13, 2019

The Constraints on Adolescent Learning Essay -- Education Teaching

Personalities, social skills and intellectual development are only some of the key factors that effect how pupils learn and achieve differently to one another. Every child responds individually to their specific needs and environment, and the extent of that achievement can be often be linked with external factors as pupils are naturally influenced by a variety of different constraints. These factors that are not concrete and will change and alter throughout an adolescent’s development, as Piaget (Piaget 1970) believed the mind changes and works in different ways at different stages so do the conditions that enhance and limit progress. Furthermore these constraints can have both a beneficial and a detrimental effect on the learning abilities of pupils, often with the most extreme examples of these constraints being the most influential. Physical, intellectual, emotional and social development; gender and ethnicity, play the most significant roles in determining the achievements and success of the individual pupils we teach and it is vital that as teachers we are aware of and can accommodate these factors to enable them to succeed to the best of their ability. Vygotsky believed that social and cultural interaction and involvement effects the development of our thought processes (Vygotsky 1929 cited in Mooney 2000) indicating that the environment and adults that we interact with as children directly influence our ability to learn, therefore suggesting that ethnicity and social class can not only enhance adolescent learning but perhaps also hinder its progress. Social deprivation and financial instability can hamper a pupil’s development as there might be less emphasis on education as an important necessity in working class families... ...0et%20al.pdf [Accessed on 10th Dec 2010] ï  ® Kearsley, G.[n.d.] Conditions of Learning (R. Gagne) [online]. 1ST ed. United States: Theory Into Practice. Available from: http://tip.psychology.org/gagne.html [Accessed on 20th Nov 2010] ï  ® Kearsley, G.[n.d.] Social Development Theory (L. Vygotsky) [online]. 1ST ed. United States: Theory Into Practice. Available from:http://tip.psychology.org/vygotsky.html [Accessed on 20th Nov 2010] ï  ® Kirkby, E. (2003) How can we address the issue of Boys’ Underachievement? [online] 1st ed. United Kingdom: Teacher Research. Available from: http://www.teacherresearch.net/tr_ekundachboys.htm. [Accessed on 31st Dec 2010] ï  ® McLeod, S. (2007) Vygotsky's Theory of Social Development [online]. 1st ed. United Kingdom: Simply Psychology. Available from: http://www.simplypsychology.pwp.blueyonder.co.uk/vygotsky.html. [Accessed on 20th Nov 2010]

Sunday, November 10, 2019

Heredity in a Doll’s House Essay

One major topic incorperated in Henrik Ibsen’s play A Doll House is the influence of heredity on a person. Ibsen seems to think that heredity is responsible for all faults in a person’s existence. Even what modern-day scientists would classify as environemental factors are ocnsidered heredity in Ibsen’s play. The first discussion of inheretid traits comes barely a dozen pages into the play. Helmer is telling Nora how she is a spendthrift: You’re an odd little one. Exactly the way your father was. . . . It’s deep in your blood. Yes, those things are hereditary, Nora. Most of the discussions having to do with heredity seem to be accusing the person of inheriting an ill-suited trait. This could be because in general people want to appear as though everything good that happens to them is a direct result of something they themselves did. Anything bad that happens is always someone else’s fault. Also, characters in the story place such credence upon the concept of heredity that one does not want to give his sons a bad start in life due ot his bad â€Å"genes. † Krogstad is an example: â€Å"My boys are growing up. For their sakes, I’ll have to win back as much respect as possible here in town. † Helmer, perhaps more than any other character, puts much faith into this system. He remarks, â€Å"Because that kind of atmosphere of lies infects the whole life of a home. Every breath the children take in is filled with the germs of something degenerate. Further, â€Å"Oh, I’ve seen it often enough as a lawyer. Almost everyone who goes bad early in life has a mother who’s a chronic liar. † Heredity plays a large part in setting up the belief systems of the characters such that the background provided in the first act carries through to its eventual conclusion in the final act. The power of heredity ot shape the play is shown by the last li ne of the first act, uttered by Nora: â€Å"Hurt my children—! Poison my home? That’s not true. Never. Never in all the world. â€Å"

Friday, November 8, 2019

Sexuality on Television and Teen Pregnancy Essay Example

Sexuality on Television and Teen Pregnancy Essay Example Sexuality on Television and Teen Pregnancy Essay Sexuality on Television and Teen Pregnancy Essay By Nichole Crawford We live in a society that is fueled by instant gratification, exaggerated sexuality and an ever-increasing lack of moral values. Through both poor role models and a highly sexualized media, the adolescents of today are constantly presented with a â€Å"lassiez-faire† projection of sex. Rarely do these images accurately portray the very real damage that irresponsibility and a lack of planning can do to the lives of young adults. In fact, some of the portrayals in today’s media do just the opposite, by encouraging teens to behave irresponsibly in regard to their sex lives. This is evidence in reality-style shows like â€Å"Teen Mom† and â€Å"16 and Pregnant†, which glorify teen sexuality and the consequences it can lead to. By airing television shows about teen moms on television, we are encouraging our young girls to repeat the behavior they see. Glorifying these girls’ choices to have unprotected sex at such a young age is irresponsible. There is little doubt in anyone’s mind of the turbulence that accompanies adolescence. It is a hormone-filled roller coaster of confusion, excitement and increased interest in sexuality. In recent years, with the internet boom and the increase in available television channels, it has become the norm for sex to be the topic in almost any available programming. From regular primetime shows to cable shows to commercials, sex can be found as a central theme. With children, teenagers, and young adults being exposed to so much sexuality, we can assume that it must have an impact on the development of their sexuality and their sexually-based decisions. The parents of teenagers and their children participated in one study in which they were asked questions in an attempt to determine how the media influenced them sexually (Werner-Wilson 303-311). The results were conclusive, and showed that teens did not believe the media had much influence of their decisions. Their parents, however, expressed more concern. As one parent put it the images on television were â€Å"pornography set to music† (page 310) and the concern was widespread that it would have a negative impact on their children’s’ choices. This is a concern that should not be easily dismissed. The study concluded that the teens were essentially unaware of the influence the media had on their decision making (311). Because it is unlikely for teenagers to be able to make a distinction on their own, parents should make an effort to sit with their children on occasion and observe their television choices, to monitor their intake of televised sexuality and discuss the unhealthy or dangerous decisions being made in the programming. Essentially, parents should assume a watchful and careful role in their children’s television decisions. We can hope that by taking such an interest in the television programming their children watch, parents can ward off any negative influence that sexually-charged programming can have on behavior. Another such study performed in a Northeastern high school had a goal of profiling television use among high school television viewers, with a specific interest in the sexual content in these programs (Schooler, pg. 484-508). The study divided the participants into groups and measured the amount of sexual content in each group’s television consumption. They found that the programs with higher sexual content was viewed by more of the study participants as a whole then were the programs with low sexual content, regardless of the genre of the show (503). This finding suggests that these adolescents do not realize the extent to which they are influences by the sexual content, because they believed that they were choosing the shows based on the genre, not the sexual content. As the author of the study findings puts it: â€Å"it appears that some teens who regularly watch higher levels of sexual content may be doing so somewhat inadvertently (504). This finding further emphasizes the need for parents to take an active role in helping their teenagers become aware of what they are watching, and how it impacts their thinking and behavior, because if they are unknowingly watching these highly sexualized shows, they may also unknowingly behave in a way that is portrayed in these programs. When taking these facts into consideration regarding teen sexuality and teen pregnancy, it can be safely assumed that these shows play at least a small role in the way that today’s teens view sexuality and, in turn, their own sexual behavior. One form of sexual content that poses a particular problem is so-called â€Å"reality† television. Shows that show romantic and sexual themes, presented in a realistic format give teenagers, especially female teenagers, a false sense of reality. The shows fail to depict accurate scenarios in the dating world, which leads to unrealistic expectations. When combined with insufficient knowledge about the dangers of risky sexual behavior, the shows perpetuate the possible problems that exist for teenagers in both romantic and sexual scenarios. These shows, while being called â€Å"reality TV† are unrealistic about the actual dating world as it exists today. Rarely do the characters on these shows experience real consequences from their behavior, such as pregnancy or STD’s, and in that sense, they fail to prepare the viewers for what is actual reality. This leads teens into situations with unrealistic expectations for their own encounters. In a study performed to determine the correlation between romantically themed reality television and teenage behavior, it was found that â€Å"[Romantically themed reality television] is a significant of girls’ frequency of sexual conversations with their peers and boys’ perceptions of the sexual experience levels of their peers (Vandenbosch, page 578). When these shows are viewed adolescents who watch them talk about sex more frequently with their friends; without also increasing the frequency of educational conversations about sex, this increases the risk of sexually irresponsible behavior. These shows do not depict sex and romance in a way that encourages furthered learning abo ut responsible sex, rather, it depicts sex as having little or no consequences in the lives of the people engaging in it. It is human nature that the things to which we devote our energy become increasingly a part of our lives, so if the adolescent’s time is increasingly spent watching sexually themed television, and then subsequently talking about it, they will spend an increasing amount of time involved in related behaviors. This leads to an increased risk of unplanned pregnancy and STD’s simply because the amount of sexual experiences should increase according to the amount of time spent watching and then discussing sexually themed television and other media. Not only does a sexually-themed medium increase the likelihood of sexual behavior in adolescents, but it also increases the likelihood that teens will experience consequences or regrets after such behavior. For example, after watching and discussing a show with a high amount of sexual content, a female teenage viewer may go and behave similarly to a character on the show. She may be misguided in her expectation because of the outcome on the show, and when her encounter fails to meet her expectations, she may come to regret her experience. Not only is regret a very real risk, but if the shows fails to depict necessary protection use by the character, it is likely that the teen may not think to use such measures in her own encounters. In this way, television content about romantic and sexual encounters sets adolescents for disappointment and an increased risk of unwanted consequences. According to one study involving teens’ media exposure to sex and the likelihood of regretting their first sexual encounter: â€Å"teenagers exposed to high levels of sex on television will be more likely than their peers to regret their first sexual experience† (Berry, page 93). While this may be related to an emotional aspect of the encounter, it is also fairly likely that it is due to the experience of unwanted consequences to the sexual behavior such as pregnancy or sexually transmitted diseases. The study found also that increased television exposure led to earlier sexual experiences and also states that â€Å"earlier age at first sex is correlated with elevates risks of both pregnancy and STD’s. (Berry, 97)† Given these findings, as well as the findings in other studies regarding the media influence on adolescents, we can draw the following conclusions. First, teenagers who watch television programming are largely unaware of the influence it has on their own personal sexual behavior. Parents of such teens seem to be more aware of the influence it can have, although are unlikely to try to change the media intake of their children. Secondly, the viewing of sexual media leads to an increase in discussions of, and possibly involvement in, sexual activity. The involvement in such activity is rarely paired with education about sexual safety when it is influenced by sexual media. Lastly, teens who watch a high volume of sexually themed television are more likely to regret their first sexual experience. This can be because of unrealistic expectations, or can come from unwanted consequences such as STD’s and pregnancy. All of these facts should be taken into consideration when choosing what to allow our children to watch. While it would be nearly impossible to completely eliminate sexual content, it is possible and probably necessary to attempt to regulate it for children and teenagers. By oing so, we can probably reduce the number of unwanted pregnancies and sexually transmitted diseases. Berry, Sandra H et al. â€Å"It’s Better on TV: Does Television Set Teenagers Up For Regret Following Sexual Initiation? † Perspectives on Sexual and Reproductive Health, Volume 41, Number 2, June 2009. Pages 92-96. Academic Search Premier. Web. 1 Nov. 2012 Schooler, Deborah et al. â€Å"Beyond Exposure: A Person-Oriented Approach to Adolescent Media Di ets† Journal of Research on Adolescence; Volume 19 (3) 2009, Page 484-508. Academic Search Premier. Web. 1 Nov. 2012 Vandenbosch, Laura, and Steven Eggermont. Temptation Island, The Bachelor, Joe Millionaire : A Prospective Cohort Study On The Role Of Romantically Themed Reality Television In Adolescents Sexual Development.   Journal Of Broadcasting amp; Electronic Media  55. 4 (2011): 563-580. Academic Search Premier. Web. 1 Nov. 2012. Werner-Wilson, Ronald Jay et al. â€Å"Adolescent and Parent Perceptions of Media Influence on Adolescent Sexuality† Adolescence; summer 2004, Vol. 39 Issue 154, p303-313. Academic Search Premier. Web. 1 Nov. 2012

Wednesday, November 6, 2019

Shrub Summary essays

Shrub Summary essays In Molly Ivins and Lou Duboses commentary, Shrub, the author outlines George W. Bushs political life from his days as an oil entrepreneur in Midland, working for corporations, and becoming the governor of Texas. The overall purpose of Molly Ivins is to give the future president a background of what he has done in Texas that would make it scary to the next leader of the free world. In the introduction, Ivins suggests, The first is to look at the record. The second is to look at the record. And third, look at the record. One of the first accountable and mysterious records was when Bush was able to fly F-102s in the Texas Air National Guard. He was assigned to one of the safest plane missions to deter himself from going to Vietnam. Unlike some of the poor children and with the development of Project 100,000 to accept Southern black children to participate in the war, the powerful and wealthy people in the state of Texas prevented the rich young males from going to Vietnam. Despite Bushs lowest score on the pilots test, he was selected from 150 out of a waiting list of 100,000 people applying for the position. However, despite the minimum scores, junior used the name Bush effectively because his father was a Congressman for Texas. Bush Jr. also ran for Texas Congressional seat. However, all plans were broken after one of his volunteers, goofed up by running a Bush Bash political rally. The bash was to invite college students at Texas Tech to vote for Bush by giving away free alcoholic beverages. George W. Bush was involved in oil business in Texas. Molly Ivins sums up what Mr. Bush has done, he had actually failed, but still rewarded for the mistakes he has committed. For example, when Bush struck oil and founded Arbusto Energy Company, he had around fifty investors put in $4.7 million, but lost most of the amount. The company was saved Spectrum 7 Energy Corpor...

Sunday, November 3, 2019

Financial Crisis of 2008 Research Paper Example | Topics and Well Written Essays - 2000 words

Financial Crisis of 2008 - Research Paper Example Effects of economic recession or financial crisis are usually witnessed in employment, industrial production and in real estate income (Magdoff and Bellamy 41). The technical economic indicator associated with recession is economic growth which is negative which in quarters is two consecutive when measured by a nation’s GDP (Gross Domestic product). The 2008 financial crisis affected all financial institutions in the world. The financial crisis endangered the total collapse of financial bodies, the reduction in stock markets all over the world, world government tried to apply bailouts to financial institutions but still it had little effect. In certain areas such as housing was badly affected in that it led to foreclosures, evictions and unemployment among many people. In addition, the financial crisis was responsible for the collapse or failure of major business, decrease in consumer wealth and recession in economic activities all over the world resulting to the 2008 financia l crisis and leading to European debt problems or crisis. The financial crisis in the US was sparked by the housing bubble that influenced the values of securities in US associated with housing prices to destruction of financial bodies in the world. Further, the 2008 financial crisis was activated by intricate interplay of government laws that motivated home ownership offering them cheap interests on house loans. In October 2008, questions emerged regarding the issue of bank solvency, downturn in availability of credit to citizens and the destroyed investors confidence which had a negative influence on the world stock markets especially in the US and Europe where securities experienced massive losses in 2008. During this time, global trade decreased as availability of credit tightened. The US government reacted to this phenomenon with fiscal stimulus packages for financial institutions, monetary laws expansion, and bailouts (Magdoff and Bellamy 72). The US financial crisis left many shocked because it severely affected their lives. The crisis ended in late 2008 and the beginning of 2009 in the US when the congress enacted the recovery and reinvestment Act of 2009. After viewing the two movies, â€Å"Too Big to Fail’ and the â€Å"Margin Call† it is clear that the US financial crisis began in the housing industry specifically in the mortgage market known as subprime, which spread to prime mortgage, and other types of debts that mortgage firms in the US faced. The movie â€Å"Too Big to Fail† clearly shows the real events that took place in that the US banks and other financial institutions counted losses as high as third of the total financial or bank capital. The films shows that the crisis caused to sharp decrease in bank lending that resulted in severe downturn in the economy of the United States of America. Between August 2008 and October 2008, the subprime borrowers in the US have affected the availability of credit and decreased the repayment of loans. Subprime loans are risky because they are likely to suffer from default than loans offered to prime borrowers. Therefore, if a borrower makes timely repayment of his or her loan, the lender may claim the control of the property. In August 2008, the value of subprime mortgage borrowers stood at over $ 1 trillion with the total of over $ 7 million outstanding mortgage balance. This eventually led to the increase in lending of loans to subprime borrowers with the perception that the prices of houses will continue to increase with time. Further, this act was aided by the increase of non-bank autonomous mortgages, which regardless of their smaller share in the market contributed a lot to the housing indus

Friday, November 1, 2019

Role of Private Sector Organizations in Education Essay

Role of Private Sector Organizations in Education - Essay Example This calls for infrastructure development, and thus huge investment. Despite rapidly increasing government expenditure in education, real expenditures per pupil are increasing. Property-tax relief efforts and calls for more equitable funding across rich and poor school districts have increasingly led states to pick up a greater percentage of education costs. Basic needs for today's market are3: Privatization could provide an appropriate response to public education offering opportunities both for reducing costs and infusing private-sector funds into the education system. Schools are struggling to raise money to maintain existing buildings and to build new schools in order to keep up with increasing enrollment5. Private-sector involvement in education can provide infrastructure, and this may be one of the more politically acceptable methods of, since neither teachers nor students are directly involved. Providing classroom space, buildings, or land, Furnishing or equipping existing classroom space, providing maintenance services and utilities, providing teaching programs, Managing schools or school districts, Negotiating management deals that include provision of infrastructure are some of the issues where private sector can contribute in education6. The emergence of diverse privatization responses to inadequate public resources, coupled with some legislative restructuring ( school choice and open enrollment plans) in public schools, can result in substantial cost savings. Public/private partnerships can increase saving potential, as an alternative to increased taxes and service cuts and in response to growing school enrollments and increasing costs7. In addition, the company may implement a smaller student-teacher ratio, continued teacher training, and increased use of technology teacher's salary and benefits, books, supplies, furniture, equipment etc...8 Another key area where private agencies can make significant contribution is skill training to help children who did not move beyond school education, to come up in life. Private sectors can give away grants and scholarships to deserving candidates. Business organizations can influence the quality of future workers and can encourage improved performance in several ways9: Executive programs, where corporate executives work in specialized areas such as administration, staff development, or resource management. Curriculum renewal programs, where corporate executives work with educators to develop curricula that reflects private-sector technology, standards and practice. Mentor programs, where professionals have linked with individual students. Donation of equipment to schools. Programs between business