Monday, December 16, 2019

Ia Math Free Essays

IA Task I Introduction and purpose of task: The purpose of this task is to investigate the positions of points in intersecting circles and to discover the various relationships between said circles. Circle C1 has center O and radius r. Circle C2 has center P and radius OP. We will write a custom essay sample on Ia Math or any similar topic only for you Order Now Let A be one of the points of intersection of C1 and C2. Circle C3 has center A and radius r (therefore circles C1 and C3 are the same size). The point P’ (written P prime) is the intersection of C3 with OP. This is shown in the diagram below. Analytically find OP’ using r=1 and OP=2, OP=3, and OP=4: First, I created a line (see the dashed line in the above figure) between AP’ that creates the ? AOP’. Because P’ is on the circumference of circle C3 and A is the center of circle C3, that means that AP’ is equal to the radius of C3, which is 1. We also know that because line AO connects the circumference of C1 with the center of C1 (O) and the circumference of C3 with the center of C3 (A), the radii of these circles is the same, which means that they are equivalent circles. Therefore, in the ? AOP’, AO=AP. When a triangle has two equivalent sides, it is an isosceles triangle. By that logic, ? O=? P’. Now, I looked at the triangle that is already drawn in the above figure, ? AOP. We know that this triangle is also isosceles because OP=AP. By that logic, ? A=? O. Using the law of cosines c^2=a^2+b^2-2abcos(C), which works for any triangle, I assigned ? to ? O and determined that cos(? )=1/(2*OP). Then, using the law of sines (insert law of sines here), sin(? )/1=sin(180-2? )/OP’ OP’=sin(180-2? /sin(? ) OP’=sin(2? )/sin(? ) OP’=2cos(? ) But because cos(? )=1/2OP as earlier discovered; OP’=1/OP By using this equation, I derived the following answers analytically using r=1 and OP=2, OP=3, and OP=4. OP234 OP’0. 50. 330. 25 Behavior of intersecting circles and general statement describing interaction that occurs when value of OP is changed: As OP changes, the resulting OP’ value decreases exponenti ally. This shows that ______________ BLAH BLAH BLAH BLAH BLAH Analytically find OP’ using OP=2 and r=2, r=3, and r-4: Behavior of intersecting circles and general statement describing interaction that occurs when value of OP is changed: Comments on consistency of general statement #1 vs. general statement #2: Use technology to investigate other values of r and OP. Find the general statement for OP’: Test the validity of the most recent general statement by using different values of OP and r: Discussion of scope and/or limitations of the most recent general statement: Explanation of how general statement was arrived at: Further comments: Further investigation into relationships of intersecting circles: How to cite Ia Math, Essay examples

Sunday, December 8, 2019

Cardiovascular Disease in Aboriginal and Torres Strait Islander People

Question: Discuss about theCardiovascular Disease in Aboriginal and Torres Strait Islander People. Answer: Introduction The rate of cardiovascular diseases is higher among the Aboriginal and Torres Strait Islander people than the rest of the non-indigenous communities across Australia. Nationally, cardiovascular diseases account for 30% of deaths. This is higher amongst the Aboriginal and Torres Strait Islander people who are 3 times more likely to suffer from the diseases, 70% times more likely to die from a cardiovascular disease. This is why the Aboriginal and Torres Strait Islander people accounted for over 40% of the 43,603 cardiovascular-related deaths in 2013 (Donato Segal 2013). In order to address the worsening situation of cardiovascular diseases amongst the indigenous communities, the government has been forced to come up with viable policies and strategies. One such policy is the National Aboriginal and Torres Strait Islander Health Plan 20132023 that is exclusively aimed at addressing health needs like cardiovascular diseases of the Aboriginal and Torres Strait Islander people by partnering with the local organizations to deliver culturally-acceptable quality healthcare (Fredericks, Lee, Adams Mahoney 2015). One of the major causes of cardiovascular diseases amongst the Aboriginal and Torres Strait Islander people is smoking (Donato Segal 2013). The inhalation of tobacco cigarettes leads to cardiovascular diseases because it contains nicotine and tar which leads to the constriction of the coronary arteries and blood cells in the body. The poor health status of the Aboriginal and Torres Strait Islander people is caused by a wide range of socio-cultural factors. Some of these include unhealthy lifestyle and low level of education. Unlike the rest of the empowered non-indigenous communities, the Aboriginal and Torres Strait Islander people have a low level of education. This puts them at a risk because they are ignorant of health issues and have limited chances of getting job opportunities to economically empower themselves. A poor person cannot afford quality healthcare no matter how urgently it may be needed (Fredericks, Lee, Adams Mahoney 2015). Besides, these indigenous persons lead unhealthy lifestyle characterized by poor eating habits, physical inactivity, and engagement in risky behaviours like smoking. References Donato, R. Segal, L., 2013. Does Australia have the appropriate health reform agenda to close the gap in Indigenous health?. Australian Health Review, 37(2), pp.232-238. Doolan, I., Najman, J., Henderson, S., Cherney, A., Plotnikova, M., Ward, J., Kemp, R., Dev, A. and Smirnov, A., 2015. A retrospective comparison study of Aboriginal and Torres Strait Islander injecting drug users and their contact with youth detention and/or prison. Australian Indigenous Health Bulletin, 15(4). Fredericks, B.L., Lee, V., Adams, M.J. Mahoney, R., 2015. Aboriginal and Torres Strait Islander Health. Introduction to Public Health [3rd Ed.], pp.355-376.

Saturday, November 30, 2019

Lord of the Flies Summary Essay Example

Lord of the Flies Summary Essay It is very subtly indicated that the book takes place in the midst of an unspecified nuclear war. Some are ordinary students, while others arrive as a coherent body under an established leader (a choir). Most appear never to have encountered each other before. The book portrays their descent into savagery; left to themselves in a paradisiacal country, far from modern civilization, the well-educated children regress to a primitive state. At an allegorical level, the central theme is the conflicting impulses toward civilization—live by rules, peacefully and in harmony—and towards the will to power. Different subjects include the tension between groupthink and individuality, between rational and emotional reactions, and between morality and immorality. How these play out, and how different people feel the influences of these, forms a major subtext of Lord of the Flies. In the midst of a wartime evacuation, a British plane crashes on an isolated island. The only survivors are all male children below age 13. Two boys, the fair-haired Ralph and an overweight, bespectacled boy reluctantly nicknamed Piggy find a conch which Ralph uses as a horn. Two dominant boys emerge during the meeting: Ralph, and Jack Merridew, a redhead who is the head of a choir group that was among the survivors. Ralph is voted chief, losing only the votes of Jacks fellow choirboys. Ralph asserts two goals: have fun, and work toward rescue by maintaining a constant fire signal. They create the fire with Piggys glasses, and, for a time, the boys work together. Jack organizes his choir group into the groups hunters, who are responsible for hunting for meat. Ralph, Jack, and a black-haired boy named Simon soon become the supreme trio among the children. We will write a custom essay sample on Lord of the Flies Summary specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Lord of the Flies Summary specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Lord of the Flies Summary specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Piggy, the most sensible of the bunch, is quickly outcast by his fellow biguns (the older boys) and becomes an unwilling source of mirth for the other children. Simon, in addition to supervising the project of constructing shelters, feels an instinctive need to protect the younger boys. The original semblance of order imposed by Ralph quickly deteriorates as the majority of the boys turn idle. At one point, Jack summons all of his hunters to hunt down a wild pig, including those who were supposed to be maintaining the fire. A ship approaches, but passes by because the signal fire has gone out. Although the hunting of the pig turns out to be the hunters first successful hunt, Ralph is infuriated that they have missed a potential rescue. Around the same time, many of the young people begin to believe that the island is inhabited by a monster, referred to as the beast. Jack gains control of the discussion by boldly promising to kill the beast. Later, Ralph envisages relinquishing his position, though Piggy discourages him from doing so while the two of them and Simon yearn hopefully for some guidance from the adult world. After Sam and Eric report possibly seeing the beast atop a mountain, Ralph and Jack investigate; they encounter the corpse and the open parachute of a fighter pilot who has landed on the island and mistake it as the beast asleep. Jack assembles the children with the conch and confirms the beasts existence to them. The meeting results in a schism, splitting the children into two groups. Ralphs group focuses on preserving the signal fire. Jack becomes the chief of his own tribe, which focuses on hunting while exploiting the iron-clad belief in the beast. As Jack and the hunters have already slain their first pig, they offer promises of meat, fun, and protection from the beast. Jacks tribe gradually becomes more animalistic, applying face to liberate their inner savages while they hunt. The face paint becomes a motif which recurs throughout the story, with more and more intensity toward the end. Simon, a part of Ralphs tribe, who had cracked and went off looking for the beast by himself, finds the head of the hunters dead pig on a stick, left as an offering to the beast. Simon envisions the pig head, swarming with scavenging flies, as the Lord of the Flies and believes that it is talking to him. Simon hears the pig identifying itself as the real Beast and disclosing the truth about itself—that the boys themselves created the beast, and that the real beast was inside them all. Simon also locates the dead parachutist who had been mistaken for the beast, and is the sole member of the group to recognize that it is a cadaver instead of a sleeping monster. Simon attempts to alert Jacks tribe that the beast is nothing more than a cadaver. While trying to tell Jacks tribe of this fact, Simon is caught in a ring during a primal dance and Jacks tribe beats him to death, with Ralph, Piggy, Sam, and Eric in the ring also. Ralph, Piggy, Sam, and Eric later try to convince themselves that they did not take part in the murder. Jacks tribe then raid Ralphs camp to steal Piggys glasses. Ralphs tribe journeys to Jacks tribe at Castle Rock to try to get back Piggys glasses. In the ensuing confrontation, Roger drops a rock on Piggy killing him and the conch is shattered. Sam and Eric are captured and tortured into joining Jacks tribe. Ralph is forced to flee. The following morning, Jack leads his tribe on a manhunt for Ralph. However, the fire and smoke attracts the attention of a nearby warship. Then a naval officer lands on the island near where Ralph is lying, and his sudden appearance brings the childrens fighting to an abrupt halt. Upon learning of the boys activities, the officer remarks that he would have expected better from British boys, initially believing them only to be playing a game. In the final scene, although now certain that he will be rescued after all, Ralph cries.

Tuesday, November 26, 2019

Can We Talk essay

Can We Talk essay Can We Talk? essay Can We Talk? essayCommunication is an integral part of human life and its lack is extremely hard experienced in marriage or intimate relationships. Thus, the main aim of the assignment is to discuss the article â€Å"Can We Talk?† written by Schoenberg for the purpose of demonstrating some thoughts about the issue.The article states that self-disclosure is tightly connected with communication in relationships and the presence of these two concepts helps people to understand better each other and to avoid many conflicts. As for me, it is very important to share some my inner feelings with the partner and to feel the same from the partner’s side. For instance, I like to ask question about the life of my partner, and to listen to the answers. It seems to me that such a kind of listening is an act of love because it makes us to be closer to each other, and adds some pleasant feelings in our life.According to Schoenberg (2011), self-disclosure allows people to reveal their i ntimate wishes, thoughts, some doubts or fears, and to do it either non-verbally or verbally. I agree with the author’s position that self-disclosure is a base of a happy marriage. In addition, Gilbert (1976) stated that people need to be aware of the feelings and emotional state of the partner and to share not only good moments but also some hard situations together. It leads to a specific kind of satisfaction in relationships because each of us wants the other person to be interested in him or her; so, communication on the level of hearts helps people to create more strong families.It is a truth that there exist some gender differences in reactions on the same words but there equally exist many similarities. In my life, I have experienced the same reactions on affective affirmation and compliments because men and women always need the words of praise and it can be a good stimulus to further achievements.In conclusion, I have discussed the article and shared my experience as well as demonstrate some thoughts on the issue of self-disclosure in communication. Moreover, after reading the article, I felt like I fit into the generalizations, and very often I experienced all those feelings described in it. In my opinion, viable and full-fledged marriages consist of those couples who share their feelings with each other and have a high degree of openness to the spouse.

Friday, November 22, 2019

The Complete List of NCAA Division 1 Colleges (Most Recent)

The Complete List of NCAA Division 1 Colleges (Most Recent) SAT / ACT Prep Online Guides and Tips The NCAA, the major governing body for intercollegiate sports, separates its member institutions by divisions. Division I colleges are generally the biggest. They have the largest athletic department budgets and their sports teams generate the most revenue. All of the schools that participate in bowl games and March Madness are Division I schools. However, there are some regional colleges and smaller private schools you may not be familiar with that are also classified as Division I.In this article, I’ll give you a basic understanding of Division I and a complete list of current Division I schools by state. Why Are There NCAA Divisions? NCAA Divisions exist to create parity and level the playing field. With divisions, schools should be competing against other schools of a similar size and with similar resources. However, in the climate of today's NCAA sports, there can be huge disparities between schools in the same division, especially in Division I. For example, from 2006-2011, the athletics revenue for the University of Alabama was $124,498,616. During that same period, the athletics revenue for Alabama State University was $10,614,081. Both are Division I schools. What Makes Division I Unique? Compared to NCAA Division II and III schools, NCAA Division I schools have the biggest student bodies, the largest athletic budgets, and the most athletic scholarships. All of the major sports conferences, including the Big 10, Big 12, Pac 12, and ACC, are composed of Division I colleges. While Ivy League colleges are Division I, they don't offer athletic scholarships. Division I Fun Facts Stanford University has the most Division I NCAA championships with 117. On average, only 6% of the student bodies at Division I schools participate in NCAA sports. Stanford has won the Learfield Sports Directors' Cup awarded to the most successful Division I athletics program every year since 1994-1995. The University of Oregon won the very first NCAA men's basketball championship in 1939. Louisiana Tech won the very first NCAA women's basketball championship in 1982. The 1982 Louisiana Tech women's basketball team How Should You Use This List? If there's a college you're considering, you can determine if it's a Division I institution. If you're interested in a particular sport, check to see which colleges are Division I in that sport. Some schools are Division I in one or two sports and Division II or III in the rest. For example, Colorado College is Division I in men's ice hockey and women's soccer, but the rest of their varsity sports are Division III. If you're interested in football, you should also check to see if a particular school is FBS, FCS, or if it even has a football program. Division I Colleges By State Alabama University of Alabama Alabama AM University Alabama State University University of Alabama at Birmingham Auburn University Jacksonville State University Samford University University of South Alabama Troy University Arizona University of Arizona Arizona State University Northern Arizona University Grand Canyon University Arkansas Arkansas State University University of Arkansas, Fayetteville University of Arkansas at Little Rock University of Arkansas, Pine Bluff University of Central Arkansas California California Polytechnic State University California State University, Bakersfield California State University, Fresno California State University, Fullerton California State University, Northridge California State University, Sacramento University of California, Berkeley University of California, Davis University of California, Irvine University of California, Los Angeles University of California, Riverside University of California, Santa Barbara Long Beach State University Loyola Marymount University University of the Pacific Pepperdine University Saint Mary's College of California University of San Diego San Diego State University University of San Francisco San Jose State University Santa Clara University University of Southern California Stanford University Colorado University of Colorado, Boulder Colorado State University University of Denver University of Northern Colorado U.S. Air Force Academy Connecticut Central Connecticut State University University of Connecticut Fairfield University Quinnipiac University Sacred Heart University Yale University Delaware University of Delaware Delaware State University District of Columbia American University George Washington University Georgetown University Howard University Florida Bethune-Cookman University University of Central Florida University of Florida Florida AM University Florida Atlantic University Florida Gulf Coast University Florida International University Florida State University Jacksonville University University of Miami (Florida) University of North Florida University of South Florida Stetson University Georgia University of Georgia Georgia Institute of Technology Georgia Southern University Georgia State University Kennesaw State University Mercer University Savannah State University Hawaii University of Hawaii, Manoa Idaho Boise State University University of Idaho Idaho State University Illinois Bradley University Chicago State University DePaul University Eastern Illinois University Illinois State University University of Illinois Urbana-Champaign University of Illinois at Chicago Loyola University Chicago Northern Illinois University Northwestern University Southern Illinois University at Carbondale Southern Illinois University Edwardsville Western Illinois University Indiana Ball State University Butler University University of Evansville Indiana State University Indiana University, Bloomington Indiana University-Purdue University, Fort Wayne Indiana University-Purdue University at Indianapolis University of Notre Dame Purdue University Valparaiso University Iowa Drake University University of Iowa Iowa State University University of Northern Iowa Kansas University of Kansas Kansas State University Wichita State University Kentucky Eastern Kentucky University University of Kentucky University of Louisville Morehead State University Murray State University Northern Kentucky University Western Kentucky University Louisiana University of Louisiana at Lafayette University of Louisiana at Monroe Louisiana State University Louisiana Tech University Grambling State University McNeese State University University of New Orleans Nicholls State University Northwestern State University Southeastern Louisiana University Southern University, Baton Rouge Tulane University Maine University of Maine Maryland Coppin State University Loyola University Maryland University of Maryland Eastern Shore University of Maryland, Baltimore County University of Maryland, College Park Morgan State University Mount St. Mary’s University Towson University U.S. Naval Academy Massachusetts Boston College Boston University Harvard University College of the Holy Cross University of Massachusetts, Amherst University of Massachusetts, Lowell Northeastern University Michigan Central Michigan University University of Detroit Mercy Eastern Michigan University University of Michigan Michigan State University Oakland University Western Michigan University Minnesota University of Minnesota, Twin Cities Mississippi Alcorn State University Jackson State University University of Mississippi Mississippi State University Mississippi Valley State University The University of Southern Mississippi Missouri Missouri State University University of Missouri, Columbia University of Missouri-Kansas City Southeast Missouri State University Saint Louis University Montana University of Montana Montana State University-Bozeman Nebraska Creighton University University of Nebraska Omaha University of Nebraska, Lincoln Nevada University of Nevada, Las Vegas University of Nevada, Reno New Hampshire Dartmouth College University of New Hampshire New Jersey Fairleigh Dickinson University, Metropolitan Campus Monmouth University New Jersey Institute of Technology Princeton University Rider University Rutgers, The State University of New Jersey, New Brunswick Seton Hall University Saint Peter’s University New Mexico University of New Mexico New Mexico State University New York University at Albany Binghamton University University at Buffalo, the State University of New York Canisius College Colgate University Columbia University-Barnard College Cornell University Fordham University Hofstra University Iona College Long Island University-Brooklyn Campus Manhattan College Marist College Niagara University Siena College St. Bonaventure University St. Francis College Brooklyn St. John’s University (New York) Stony Brook University Syracuse University U.S. Military Academy Wagner College North Carolina Appalachian State University Campbell University Davidson College Duke University East Carolina University Elon University Gardner-Webb University High Point University University of North Carolina-Asheville North Carolina AT State University North Carolina Central University North Carolina State University University of North Carolina Wilmington University of North Carolina, Chapel Hill The University of North Carolina at Charlotte The University of North Carolina at Greensboro Wake Forest University Western Carolina University North Dakota University of North Dakota North Dakota State University Ohio University of Akron Bowling Green State University University of Cincinnati Cleveland State University University of Dayton Kent State University Miami University (Ohio) The Ohio State University Ohio University University of Toledo Wright State University Xavier University Youngstown State University Oklahoma University of Oklahoma Oklahoma State University Oral Roberts University The University of Tulsa Oregon University of Oregon Oregon State University University of Portland Portland State University Pennsylvania Bucknell University Drexel University Duquesne University La Salle University Lafayette College Lehigh University University of Pennsylvania Pennsylvania State University University of Pittsburgh Robert Morris University Saint Francis University (Pennsylvania) Saint Joseph’s University Temple University Villanova University Rhode Island Brown University Bryant University Providence College University of Rhode Island South Carolina College of Charleston (South Carolina) Charleston Southern University The Citadel Clemson University Coastal Carolina University Furman University Presbyterian College University of South Carolina, Columbia South Carolina State University University of South Carolina Upstate Winthrop University Wofford College South Dakota University of South Dakota South Dakota State University Tennessee Austin Peay State University Belmont University East Tennessee State University Lipscomb University University of Memphis Middle Tennessee State University Tennessee State University Tennessee Technological University University of Tennessee at Chattanooga University of Tennessee, Knoxville University of Tennessee at Martin Vanderbilt University Texas Abilene Christian University Baylor University University of Houston Houston Baptist University University of the Incarnate Word Lamar University University of North Texas Prairie View AM University Rice University Sam Houston State University Southern Methodist University Stephen F. Austin State University Texas AM University, College Station Texas AM University-Corpus Christi Texas Christian University The University of Texas Rio Grande Valley Texas Southern University Texas State University Texas Tech University University of Texas at Arlington University of Texas at Austin University of Texas at El Paso University of Texas at San Antonio Utah Brigham Young University Southern Utah University University of Utah Utah State University Utah Valley University Weber State University Vermont University of Vermont Virginia George Mason University Hampton University James Madison University Liberty University Longwood University Norfolk State University Old Dominion University Radford University University of Richmond University of Virginia Virginia Commonwealth University Virginia Military Institute Virginia Polytechnic Institute and State University College of William and Mary Washington Eastern Washington University Gonzaga University Seattle University University of Washington Washington State University West Virginia Marshall University West Virginia University Wisconsin Marquette University University of Wisconsin-Green Bay University of Wisconsin, Madison University of Wisconsin, Milwaukee Wyoming University of Wyoming What's Next? Learn more about the differences between NCAA divisions. Also, you can get the complete lists of Division II and III schools by state . Want to improve your SAT score by 160points or your ACT score by 4 points?We've written a guide for each test about the top 5 strategies you must be using to have a shot at improving your score. Download it for free now:

Thursday, November 21, 2019

Hiring of Disabled Skilled Knowledge Workers Research Paper

Hiring of Disabled Skilled Knowledge Workers - Research Paper Example Employers must more often consider hiring disabled skilled knowledge workers as another practice to achieve established organizational goals and objectives. A survey conducted showed that 90 percent of the disabled skilled knowledge workers produced average or above average work output performances compared to the non-disabled workers. Similarly, another survey showed that an estimated 85 percent of the disabled skilled knowledge workers generated average or better attendance results compared to the non-disabled skilled knowledge workers. Another research showed an estimated 97 percent of the disabled skilled knowledge workers produced average or better work safety results than the non-disabled skilled knowledge workers. Lastly, another research indicates the disabled skilled knowledge workers showed an estimated 71 percent retention than the non-disabled skilled knowledge workers. In terms of employee availability, the disabled skilled knowledge workers group represents a significan tly very huge pool of untapped and unnoticed possible employee sources (Williams, 2011). To maximize the employment of disabled skilled knowledge workers, the companies must commit themselves to allocating huge funds for the provision of the reasonable workplace environment. Reasonable workplace environment includes installing wheelchair paths, handrails. Another disability workplace improvement is the installation of accessible washrooms. A third disability workplace improvement is modifying the workstations of the disabled skilled knowledge workers to reduce the unnecessary mobility of the disabled skilled knowledge workers (Williams, 2011). Employers should more often prioritize the hiring of disabled skilled knowledge workers. With the advent of the current information technology age, the need for knowledge workers continues to increase (Williams, 2011).  

Tuesday, November 19, 2019

The Fourth Amendment, Search and Seizure Essay Example | Topics and Well Written Essays - 1000 words

The Fourth Amendment, Search and Seizure - Essay Example This paper discusses a case about the violation of the Fourth Amendment exposing the dynamics of its interpretation and application. The case between Brigham City and Stuart of 2006 is an exemplar of search and seizure cases. Brigham City police responded to a call that came in at around three o’clock in the morning. The call was a complaint about a loud party in a certain neighborhood in Brigham. On arrival to the house in question, the police confirmed that indeed there was shouting and drinking. The police observed some individuals fighting in the kitchen, and an officer entered the house and announced his presence. The officer arrested the adults present at the scene and pressed charges against them including encouraging delinquency. The trial court allowed the suppression of the prosecution’s evidence and Utah Court of Appeals affirmed this suppression (Schulhofer, 2012). The suppression of evidence was on the basis that the officer's entry into the house was warra ntless hence violating the Fourth Amendment. Utah State Supreme Court affirmed this decision suspending any claim on the emergency aid doctrine and exigency of the situation. The court cited the absence of an objectively reasonable belief that there was a missing, semiconscious or unconscious person on the premises. It was this notion that the court used to suspend any claim on the emergency aid doctrine. The emergency doctrine excuses individuals from acting reasonably in lieu of an urgent need to offer aid in an emergency situation. The court suspended the doctrine also because the officers acted in the capacity of law enforcers and not in assistance to the injured individual. The court refused the exigency of the situation as it lacked persuasion about the officers’ warrantless entry (Clancy, 2008). The Supreme Court reversed the case and referred it back to court for fresh proceedings varying from the initial judgment. The concept of reasonableness  that is central to the provisions of the Fourth Amendment allows s ome exceptions to the need for a warrant.Â