How Can Cities Be More Sustainable Environmental Sciences Essay

Increasingly people are traveling to metropoliss and it is estimated that by the twelvemonth 2025 that 65 % of the universe ‘s population with be urban inhabitants ( Pacione 2007 ) . However, the demands of this turning urban population are impacting on our environment as resource ingestion and waste production wreak mayhem on our planet and our quality of life ( Wackernagel and Rees 1996 ) . The international consensus is that we need to move now toward sustainable development and this means happening a balance between societal, economic, and environmental precedences for now and future coevalss ( World Commission on Environment and Development 2004 ) . This essay will discourse the construct and rules of sustainable development as a model for be aftering for sustainable metropoliss, Australia ‘s national stance, be aftering dockets at the local degree, the common visions and actions for sustainable development, and reviewing the recent Brisbane City Centre Master Plan 2 026. The universe is presently home to a projected population estimation of 6.8 billion people ( US Census Bureau 2010 ) with approximately 22.4 million residing in Australia ( Australian Bureau of Statistics 2010 ) . Urbanization is happening at an dismaying rate with 50 % of the universe population presently populating in metropoliss and by the twelvemonth 2025 this figure is expected to hold risen to 65 % ( Pacione 2007 ) . These mega-cities have to run into the basic demands and consumerist life styles of 1000000s of people ensuing in degrees of resource ingestion and waste production which have black impacts on the environment ( Wackernagel and Rees 1996 ) . Our â€Å" ecological footmark † greatly outstrips the rate at which our environmental resources can be renewed and wastes can be absorbed which internationally has raised grave concerns for the future sustainability of our planet ( Wackernagel and Rees 1996 ) . If we fail to move now we may really good be jeopardizing the really being of future coevalss. So the inquiry is how to make we travel towards sustainability and the echoing reply is for the sustainable development of our metropoliss. The construct of sustainable development purposes to protect our hereafter and was foremost defined in Our Common Future by the World Commission on Environment and Development ( WCED ) in 1987 as â€Å" development that meets the demands of the present without compromising the ability of future coevalss to run into their ain demands † ( 2004, p.56 ) . Besides known as the Brundtland Commission, it advocated for sustainability which encompasses non merely our natural environment but equilibrating this with interacting economic and societal precedences ( WCED 2004 ) . The demand for sustainable development was emphasised once more internationally with the 1992 United Nations Conference on Environment and Development ( UNCED ) in Rio de Janeiro ( the â€Å" Earth Summit † ) which resulted in Agenda 21 ( United Nations 2004 ) . This docket paperss the rules of sustainable development and is an international guideline for actions authoritiess, non-government administrations, and the community can take together to accomplish sustainability ( Department of the Environment and Heritage 2004 ) . Several international get-togethers and studies on sustainable development for our metropoliss have since occurred and legion states and international administrations have adopted the rules of sustainable development rules into their dockets. Despite the multiple of dockets, models, and acts steering the sustainable development of our parts and metropoliss it is still a fuzzed construct and therefore a closer expression at its three constituents – environment, societal, and economic system – is needed to place the issues and demands, signifier ends and aims, and develop programs for execution. Using this integrated planning attack has normally been called the ‘triple bottom line ‘ ( Williams 2007 ) .The Triple Bottom LineFirst coined by John Elkington in 1996, the ternary bottom line advocates that the attack to sustainable development and assessment steps of sustainable patterns should see societal, environmental, and economic indexs and how they impact upon each other ( Rogers and Ryan 2001 ) . Figure 1 illustrates merely how the three constituents of sustainability are intertwined.Figure 1. The mutuality the societal, economic, and environmental constituents of the Triple Bottom Line.When be a ftering for sustainable metropoliss a balance needs to be struck between the precedences of accomplishing societal equity and inclusion, economic prosperity, and the protection of the environment ( Campbell 1996 ) . Conflicts in the precedences of each factor are inevitable and metropoliss besides impact upon environing parts and on a national and even international graduated table. With this in head, this attack to be aftering sustainable metropoliss is bound to be more successful when all cardinal stakeholders ( authorities, concern, industry, non-profit administrations, community etc ) work in partnership. Examples of precedences enveloped under each ternary bottom line constituent are outlined below in Table 1.Table 1. Examples of Triple Bottom Line Priorities for Sustainable Development( Reproduced from: Dekay & A ; O'Brien 2001, Pacione 2007, United Nations 2004, Wackernagel & A ; Rees 1996 )ENVIRONMENTAL ISSUESAir and H2O pollution ( i.e. COA? emanations ) Climate alteration ( i.e. increased H2O temperature ) Impacts on ecosystems and species biodiversity ( i.e. species extinction ) Over usage of land and natural resources ( i.e. over-fishing, deforestation ) Water deficits Natural catastrophes ( i.e. bushfires, cyclones, temblors, tsunamis )SOCIAL ISSUESHealth ( i.e. disease ) Poverty and hungriness Inadequate lodging ( i.e. homelessness ) Social unfairness ( i.e. human rights, chances ) War Crime Impacts on quality of life ( i.e. traffic congestion, noise )ECONOMICAL ISSUESUnemployment Issues with economic growing and stableness ( i.e. planetary fiscal crisis ) Campbell ( 1996 ) lineations three major struggles which can happen when turn toing these precedences: the belongings struggle ( economic growing versus societal equity ) , the resource struggle ( economic growing versus environmental protection ) , and the development struggle ( societal equity versus environmental protection ) . An illustration of a development struggle is happening land to develop lodging for the turning population while still continuing the environment and ecosystems ( i.e. Parkss, natural militias ) . The issues ( outlined in table 1 ) which are confronting the universe are by no agencies exhaustive and some are more applicable to developing ( i.e. poorness ) than developed states ( i.e. C emanations ) , therefore designation of these specific issues, the causes, and interactions confronting metropoliss at a local degree are critical towards sustainable planning. However, metropoliss can impact globally ( i.e. due to exporting ) and hence the overall ends and aims for be aftering for sustainable development should besides vibrate with regional, national and international dockets.Ecological Sustainable Development in AustraliaIn 1990, merely a twelvemonth after sustainable development had been brought to international attending by the WCED ‘s publishment of Our Common Future ( 2004 ) the Australian authorities embraced the construct specifying ‘ecological sustainable development ‘ ( ESD ) as â€Å" ‘using, conserving and heightening the community ‘s r esources so that ecological procedures, on which life depends, are maintained, and the entire quality of life, now and in the hereafter, can be increased † ( Commonwealth of Australia 1990, cited in Williams 2007, p. 124 ) . After old ages of extended audience between all the cardinal stakeholders ( i.e. authorities, concern, industry, community, non-profit administrations, faculty members ) , studies from cardinal industry sectors on sustainability issues and advice on ESD policy way, and careful consideration of planetary positions ( i.e. United Nation ‘s Agenda 21 ) the National Strategy for Ecological Sustainable Development was published in 1992 ( Department of the Environment and Heritage ( DoEH ) 1992 ) . This papers was endorsed by the Council of Australian Governments ( COAG ) and provides a national model for authoritiess to steer their determination devising and policy development towards guaranting sustainable development in Australian. Furthermore, the Strategy aims to inform industries, concerns, and the community and promote the development of policies and patterns towards a sustainable Australia ( DoEH 1992 ) . The ends, nucleus aims, and seven steering rules outlined in the Nationa l Strategy for Ecological Sustainable Development are outlined in the tabular array 2 below. Table 2. Overview of the National Strategy of for Ecological Sustainable Development ( NSESD ) ( DoEH 1992 ) Goal: Development that improves the entire quality of life, both now and in the hereafter, in a manner that maintains the ecological procedures on which life depends.CORE Aim:to heighten single and community wellbeing and public assistance by following a way of economic development that safeguards the public assistance of future coevalss to supply for equity within and between coevalss to protect biological diverseness and keep indispensable ecological procedures and life-support systemsGUIDING Principles:determination devising procedures should efficaciously incorporate both long and short-run economic, environmental, societal and equity considerations where there are menaces of serious or irreversible environmental harm, deficiency of full scientific certainty should non be used as a ground for proroguing steps to forestall environmental debasement the planetary dimension of environmental impacts of actions and policies should be recognised and considered the demand to develop a strong, turning and diversified economic system which can heighten the capacity for environmental protection should be recognised the demand to keep and heighten international fight in an environmentally sound mode should be recognised cost effectual and flexible policy instruments should be adopted, such as improved rating, pricing and inducement mechanisms determinations and actions should supply for wide community engagement on issues which affect them In reexamining the aims of the NSESD the three basis of sustainable development are present: accomplishing environmental protection, societal wellbeing and equity, and economic development now and for future coevalss. The rules are really wide sweeping and argue for a collaborative, careful and balanced attack towards determination devising and actions to accomplish sustainable environment, economic system, and communities in Australia. Of note is the 2nd rule, besides known as the â€Å" precautional rule † , which emphasises that deficiency of scientific grounds should non forestall action to debar serious environmental debasement ( Williams 2007 ) . The NSESD rules have been incorporated into legion local, province, and federal authorities Acts in Australia, including ( but non limited to ) environmental, land, H2O, coastal, and be aftering Acts ( Peel 2005, Williams 2007 ) . One of the most recent planning Acts is the Queensland Government ‘s Sustainable Planning Act ( SPA ) 2009 ( Department of Infrastructure and Planning 2009a ) which replaces the Integrated Planning Act 1997. In line with the NSESD rules, the intent of this new act is to accomplish ecological sustainability by pull offing the procedure and effects of development ( guaranting answerability ) on the environment and guaranting that local, regional, and province planning is integrated together through collaborative partnerships ( Department of Infrastructure and Planning 2009b ) . Another of import papers which is steering local planning in Australia is the United Nation ‘s Local Agenda 21 ( LA21, chapter 28 of Agenda 21 ) . This plan provides a model to implement sustainable development at the local degree and strongly encourages community engagement with local authoritiess in the development of policies, action programs, and enterprises for their metropoliss and the surrounding parts. Australia has been committed since 1997 to advance the Local Agenda 21 plan and provides local authoritiess with resources and funding towards be aftering for and implementing sustainable policies, schemes, plans, and activities in their local countries ( Cotter and Hannan 1999 ) . Figure 2 illustrations the five action phases of LA21. These actions provide a construction for planning in which it appears to be both in line with the procedural rational attack and values-based in that it focuses on developing programs based on a wealth of information and cognition from all possible beginnings and actively measuring whether executions are working towards accomplishing the program ‘s ends and marks. Of note is that beginnings for planning can include: looking at beginnings which provide information on what the indexs or issues are happening ( i.e. of the State of the Environment studies ( Williams 2007 ) , ecological footmark appraisals ( Wackernagel & A ; Rees 1996 ) ) ; sing what authoritiess ( i.e. regional programs ) and administrations are making ; affecting the community and concerns to pull on their cognition, experiences, and needs ; and feedback from reappraisals and studies on the results of ain and other enforced programs. Figure 2. Action countries in Local Agenda 21 procedure ( Cotter, B & A ; Hannan, K 1999 ) As mentioned antecedently, LA21 is a planetary plan for be aftering sustainably and hence by supervising and describing on the results around the universe this feeds back into the planning procedure and is bound to make common visions for our metropoliss and the manner authoritiess ( and hopefully communities and concerns ) go about accomplishing them.Common Visions for Sustainable DevelopmentOver the past 30 old ages, since our focal point has turn towards sustainability, common visions and ends for metropoliss across the universe are playing out as we face similar quandaries. In his reappraisal of sustainable urban development in 1998 Wheeler highlighted nine chief waies for be aftering to accomplish the development of sustainable metropoliss ( 2007 ) . These, along with short descriptions, are listed in table 3 below. A major recurrent subject is the demand to switch our dependence on auto transit to more sustainable signifiers of conveyance ( i.e. trains, coachs, bikes ) in the a ttempt to cut down its impacts such as air pollution, urban conurbation, low quality of life, and demand on natural resources ( i.e. fuel ) . This and the vision of resource decrease, as seen from a personal point of position, would hold to be the hardest to accomplish. This is merely because personal transit and resources ( i.e. engineering, communications, mundane merchandises – the list is eternal! ) are so entwined in the economic system ( i.e. movement/production of goods ) and human thoughts of freedom and leisure that these extenuate the motive for alteration. Table 3. Common Visions for Sustainable Cities ( Reproduced from Wheeler 2007 ) Compact, Efficient Land Use – In built-up countries expeditiously use land and do infinites more green, safe, attractive, and livable ; continue farm land, ecological home grounds, and unfastened infinites near metropoliss. Less Car Use, Better Access – Reduce the demand for auto transit ( i.e. to work ) by constructing up public transit and entree ; making urban small towns where services and employment are in close propinquity to places ; cater environment for bikes and paseos ; increase pricing related to auto transit ( i.e. parking, fuel, enrollment fees ) Efficient Resource Use, Less Pollution and Waste – Greater focal point on resources which are reclaimable and reclaimable ; enterprises and inducements to cut down resource ingestion ( i.e. electricity, H2O ) ; increase pricing related to resource ingestion ( i.e. electricity ) Restoration of Natural Systems – reconstructing natural land and waterways to supply corridors and home grounds for wildlife and opens infinites for people to reconnect with the environment ; reconstruct bing urban Parkss and unfastened infinites ; urban horticulture to turn nutrient and workss ; reclaim abandoned land for ecological Restoration and human activities to reconstruct wellness Good Housing And Living Environments – purpose to supply low-cost lodging and design and restore houses and vicinities to give people easy accessible services, installations, and recreational and cultural infinites A Healthy Social Ecology – reduce/eliminate homelessness ; address entrenched societal jobs which are impacting on quality of life ( i.e. racism ) ; enhance community, chances, and authorization for groups to accomplish equity and justness. Sustainable Economics – an economic system that helps to reconstruct the environment and societal harm and prevent future harm ; provides valuable employment and invests locally ( i.e. local green goods ) ; economic sector move towards renewable resources and puting in new sustainable engineerings and merchandises ( i.e. intercrossed autos ) . Community Participation And Involvement – create a more functional local and regional democracy which promotes community engagement and engagement in decision-making Preservation Of Local Culture And Wisdom – through encouragement of traditional trades, linguistic communications, rites, cultural patterns, and edifice techniques ; protect local merchandises from mass-produced imports ; protect local farming area and resource stocks ; integrate architecture and stuffs into local development. A good beginning to exemplify how Australia is be aftering for sustainable development is the Brisbane City Council ‘s Brisbane City Centre Master Plan 2006 which outlines the strategic way and model for the development of Brisbane to the twelvemonth 2026. The program ‘s highlighted issues and schemes are enveloped under the three focal point of sustainable development: design and environment, people and civilization ( i.e. societal ) , and economic sciences and concern ( Brisbane City Council 2006 ) . Figure 3 below illustrates the model of the maestro program.Figure 3. The Brisbane City Centre Master Plan Framework( Brisbane City Council 2006, p. 17 ) As a metropolis Brisbane ‘s population is expected to hold increased by 70 % in the twelvemonth 2026 ( Brisbane City Council 2006 ) . The vision for Brisbane metropolis is for a compact ( high-density ) metropolis based around the river which: has: green and unfastened infinites for diversion and assemblage ; provides chances for creativeness ; provides life, working, and leisure demands for a multi-cultural society ; preserves the metropolis ‘s cultural and heritage ; provides each entree and mobility for all types of motion and conveyance ( i.e. bicyclers, vehicles ) ; is an economically comfortable metropolis ( i.e. concern, touristry, instruction ) ; and provides a safe environment ( Brisbane City Council 2006 ) . Interestingly there are societal and economic schemes outlined in the papers but no expressed mention to an environmental scheme other than the ‘built environment ‘ scheme which involves the design and development of constructions. Alternatively mentions to ‘sustainable ‘ patterns affecting the environment are spread throughout the program such as: sustainable edifices and public infinites, air emanations, biodiversity resources, and ‘adopting sustainable resource patterns in relation to stuffs, energy, and H2O efficiency ‘ ( Brisbane City Council 2006, p.19 ) . The Brisbane City Centre Master Plan 2006 high spots widespread arguments and concerns that all the declarations for sustainable development are no more than canonized lip-service as societal and economic factors still hold precedence over protecting our environment. Furthermore, it is questioned whether the execution of policies which are geared towards sustainable development are taking topographic point ( Pacione 2007, Wackernagel & A ; Rees 1996 ) . There is no easy reply, it may be that societal and economic sustainability require more focal point to work towards long-run environmental sustainability. Plans for the sustainable development of our metropoliss surround visions crossing from anyplace between 5 to 50 old ages into the hereafter and are invariably reviewed in visible radiation of new precedences. It will take clip to alter our society so we are willing to take on the duty, to accomplish a balance between human wellbeing and equity, economic stableness, and caring for the environment that sustains our life and that of other species. Barriers to alter besides have to be explored such as unfairness of groups ( i.e. hapless versus wealthy ) in their capacity for sustainable patterns and the restrictions of political dockets. However, these alterations may non be plenty if we have gone excessively far to retrieve a sustainable environment and drastic alternate solutions, such as engineering and scientific discipline, may be the hereafter planning for sustainable metropoliss.DecisionSustainable Development is a planning attack which aims to accomplish sustainable metropoliss by striking a balance between the precedences of societal equity, economic prosperity, and the protection of the environment ( Campbell 1996 ) . This attack has been endorsed by internationally administrations ( WCED, UN ) and states across the universe which have incorporated the rules of sustainable development into their national, regional, and local dockets, Acts of the Apostless, and metropolis programs. In audience with cardinal stakeholders the Australian authorities developed their ain ‘ecological sustainable development ‘ ( ESD ) national scheme as a model for authoritiess, concerns, industries, and communities to steer their policy development and determination devising towards guaranting sustainable development in Australian ( DoEH 1992 ) . The rules of sustainable development have besides found their manner into legion Acts of the Apostless including the Sustainable Planning Act 2009 ( Department of Infrastructure and Planning 2009a ) which guides planning in Queensland to guarantee local, regional, and province planning is integrated together through collaborative partnerships ( Department of Infrastructure and Planning 2009b ) . The United Nation ‘s Local Agenda 21 plan is besides an internationally critical tool to steer local authoritiess to develop of policies, action programs, and enterprises for their metropoliss and the surrounding parts ( Cotter and Hannan 1999 ) . Furthermore, through appraisal and coverage of the results of execution of sustainable programs, metropoliss around the Earth can use this information to steer their ain programs for sustainable development relevant to their country. Common sustainable development visions include: compact and efficient land usage ; reduced dependence on auto transit and better entree to promote alternate signifiers of conveyance ; reduced resource ingestion ; ecological Restoration ; low-cost lodging and better life environments ; societal equity and justness ; sustainable economic system ; community engagement and engagement in decision-making ; and the saving of local civilization and cognition. However, when reexamining a local program ( Brisbane City ) there is grounds that in Australia economic growing and making healthy communities and taking precedency over saving of our environment. This illustration challenges whether all the declarations, dockets, and programs for sustainable development are really being implemented, particularly in relation to the environment. There is no uncertainty that accomplishing a balance between the three constituents of sustainable development is hard as precedences are conflicting and barriers to execution are present. A thorough appraisal of the barriers to sustainable development would be beneficially so these can be addressed, in every bit much as they can, and considered in future planning towards sustainable metropoliss. It may be that new engineerings and scientific discipline will supply the chance by which these struggles and barriers are overcome and worlds begin to populate in harmoniousness with their environment.

Deracialization in Black Politics essays

Deracialization in Black Politics essays There is currently a debate going on regarding the significance of deracialization as an ongoing development in American politics. The term "deracialization," when applied to American electoral politics, refers to the conduction of a political campaign by a black candidate in which racial issues and themes are minimized, if not avoided completely (Perry 1). This is done to increase white electoral support, and the candidate is usually running for a position in a district that has a white majority. Although deracialization has existed in the black political scene for a longer time, this concept was particularly important to the 1989 elections in which nine African-American candidates were elected or reelected to public office (Perry 1). This election was not only important before of the number of African-Americans who were elected, but also because many of these positions represented the first time that an African-American had been elected to that particular position. Four of these nine successful candidates conducted Barone also points out that 1994 was an excellent election year for black candidates. New African-American candidates began emerging from the places that have produced successful female candidates - "the lower-ranking political offices that have traditionally been the stepping stones for ambitious politicians" (23).The debate concerning deracialization has two majorcomponents. First, scholars ask if deracialization trulyserves to increase the number of elected black officials; and, secondly, does conducting a deracialized campaign affect the subsequent performance of the candidate while in office? What kind of representation can blacks expect from Perry points out that it would be wrong to conclude based purely on ideology that public officials who use deracialization to win an election would not serve black interests. Additionally, he adds that deracialization does not thr...

Determination of Relative Densities and Water Absorption of Coarse Aggregates Essay Example

Determination of Relative Densities and Water Absorption of Coarse Aggregates Essay Example Determination of Relative Densities and Water Absorption of Coarse Aggregates Essay Determination of Relative Densities and Water Absorption of Coarse Aggregates Essay Experiment Title : Determination of relative densities and water absorption of coarse aggregates. Objective : To determine the relative densities and water absorption of a coarse aggregate. Description of Sample : The sample used was naturally occuring riverside aggregate and was left to soak for 24 hours prior to the experiment. Apparatus Required A pycnometer – a pycnometer is a litre glass jar which has a conical screw on its lid, and a small aperature at the apex of the conical lid. The use of a pycnometer allows the same volume to be measured repeatedly. ? An electronic mass balance ? A water bottle ? A pan ? An oven ? Procedure This experiment was carried out under conditions of constant temperature. ? The masses of an empty clean and dry pycnometer and pan were measured. ? The pycnometer was carefully filled with water until an upward meniscus is formed in the aperture. Surplus water was then removed to produce a downward meniscus. ? Then the mass of the water filled pycnometer was measured using the electronic mass balance. This value was then recorded. ? The sample of gravel was then added to the pycnometer until it took up roughly 60% of the pyncometer. The remaining 40% being occupied by water. ? The outside of the pycnometer was then dried thoroughly using tissue paper and then weighed using the balance. The mass was then recorded. ? The aggregate gravel was then removed, dried and placed in the pan. The mass of this pan containig the gravel was then found and recorded. ? Lastly the gravel was oven dried for a set period of time (1 week) and its mass was then recorded. ? Results A = Mass of saturated surface dry sample = 0. 766 kg B = Mass of pycnometer sample water = 1. kg C = Mass of pycnometer water = 1. 498 kg D = Mass of oven dry sample = 0. 75 kg Calculations Relative density of oven dried sample = = 0. 75 0. 766? (1. 9? 1. 498) D A? ( B? C) = 375 182 = 2. 06 Relative density of saturated surface dry sample = A? (B? C) = 0. 766 0. 766? (1. 9? 1. 498) A = 383 182 D = 2. 10 Apparent relative density = D? ( B? C) = 0. 75 0. 75? (1. 9? 1. 498) = 125 58 = 2. 16 Water Absorption = 100 ( A? D) D = 100 (0. 766? 0. 75) 0. 75 = 32 15 = 2. 13% Comments Inaccuracies would arise if the apparatus used was not clean and dry. If the pycnometer was not properly dried of any spillage water, the recorded masses would be inaccurate. ? The lost and/or gain of some of the aggregate sample would again lead to inaccuracies in the measuring of the masses. ? Mass plays a vital role in this experiment so the most sensitive electronic mass balance available shoud be used. ? Experiment Title : Determination of surface index of sand. Objective : To determine the surface index of a sample of sand. Description of Sample : The sample used was dry white – grey sand. Sand Type : Eglinton FS 1 Sand Manufacturer : Omya UK Manufacturers Description : Specially graded dried white sand. Apparatus Required An electronic mass balance A mechanical sieve shaker ? A pan ? A graded sieve stack with varying sieve mesh sizes. ? ? A mechanical sieve shaker imparts a vertical and lateral motion to the sieve, causing the particles to bounce and turn so as to present different orientations to the sieving surface. Procedure Clean all sieves and measure their individual masses using an electronic balance. ? Arrange the sieves according to their size, placing the sieves with the largest gratings at the top, and place them on the mechanical sieve shaker. Add 2 Kg of sand to the sieves and place the lid on. ? Turn on the mechanical sieve shaker and allow it to shake the sieves for 3 minutes. Turn off the shaker and allow the sand to settle for 1 minute. ? Remove the lid and using the balance record the new masses for each individual sieve. ? Results Sieve Mesh Size 4. 75 mm 2. 36 mm 1. 18 mm 0. 6 mm 0. 212 mm 0. 15 mm Initial Mass 1. 380 kg 1. 250 kg 1. 175 kg 1. 045 kg 1. 11 kg 1. 787 kg Mass After Sieving 1. 380 kg 1. 250 kg 1. 175 kg 1. 669 kg 2. 249 kg 1. 924 kg Calculations Mass Retained 0 kg 0 kg 0 kg 0. 624 kg 1. 239 kg 0. 137 kg % Retained 0% 0% 0% 31. 2% 61. 95% 6. 85% Surface Indices = (factor) x (percentage retained) Sieve Mesh Size 4. 75 mm 2. 36 mm 1. 18 mm 0. 6 mm 0. 212 mm 0. 15 mm Factor 1 2 4 8 16 32 Total % Retained 0% 0% 0% 31. 2% 61. 95% 6. 85% 100% Surface Index 0 0 0 249. 6 991. 2 219. 2 1460 Surface Index = 1460/100 = 14. 6 Graph of particle size distribution 120 110 100 90 80 70 % Passing 60 50 40 30 20 10 0 0 0. 5 1 1. 2 2. 5 3 3. 5 4 4. 5 5 Sieve Mesh Size (mm) Comments Inaccuracies may arise in the recording of the masses of the sieves if they are not cleaned before the experiment. ? In no case should the weight of the sample of sand be so great that it would cause permanent deformation to the sieve cloth. ? The use of additional sieves may be desirable to provide other information such as fineness modulus, or to regulate the amount of each material on each sieve. ? Excessive time on the mechanical sieve shaker to achieve adequate sieving may result in degradation of the sample. ?

Problem Solving & Decision Making Essay Example | Topics and Well Written Essays - 750 words

Problem Solving & Decision Making - Essay Example Different studies present varying models of a typical decision-making process depending on their perspectives. Some models follow eight steps, others five. For purposes of making intuitive choices, the Harvard Case Approach (HCA) following four steps would be utilized. The four steps of this natural, intuitive decision-making process are: Step 1: Define the problem; Step 2: Alternative Courses of Action; Step 3: Analysis; Step 4: Recommendation. Initially, there is a situation where one of the subordinates, a security personnel, who was scheduled for regular work on a 10:00 PM to 6:00 AM slot, requested for a change in schedule due to emergency reasons. His wife called in early at 8:00 AM and informed the appropriate channels that the security personnel had to undergo immediate surgery for appendectomy. Therefore, he would be on emergency leave for five days. The shift sergeant was immediately informed of the situation and necessary changes in shift schedules have to be reviewed to fill in the temporary vacancy. a. Recall a security personnel on scheduled vacation leave. This option calls for determining a personnel on leave during the five-day period, who can be recalled for emergency purposes and who would be requested to report on the specified 10PM to 6AM schedule for five days. After which, he can resume his leave. b. Require overtime for current security personnel. Utilize security personnel to extend their shifts to at most four hours. Security personnel from the PM shift could extend from 10PM to 2AM and AM shift personnel could be requested to report four hours early (2AM instead of 6AM). The first alternative would entail some time and effort to locate and contact the security personnel on vacation leave. This option’s viability depends on where he is spending his vacation, the time he could return, the persons to be affected

In different ways Beckett and Heaney are both concerned with the Essay

In different ways Beckett and Heaney are both concerned with the limits of communication in their works. Discuss, with reference to Becketts Waiting for Godo - Essay Example On the other hand, there are those who consider the play to be confusing, lacking the ability to communicate with the viewers and without any deeper meaning than is presented prima facie. However, as a tragicomedy, it can be seen to communicate elements of both tragedies and comedies (Beckett, 1952). The hint in the subtitle communicates to the viewers that they should seek out tragic meanings in the comic parts and leads the audience to pay greater attention towards situational humor in the tragic parts of the play. The combination of tragedy and comedy is perhaps the greatest genius of this play and the way it communicates meaning to the audience. Considering the elements of a tragedy we can observe ideas like the death of a hero, an error in judgment made by a character, a character who suffers greatly, a separation from friends and a complete loss of hope. A comedy could give us images like the endurance of a hero, the joy of success, pleasure at reunion and the hero coming over great odds to win a wonderful victory. Clearly, all these elements are present in the play and are worked into situations and conversations between the characters with great skill (Beckett, 1952). However, Beckett does show that the communication of a message is not an easy task since the play is often quite mixed in the message it gives to the audience. For instance, while the heroes are planning to hang themselves, they are also able to think about getting an erection. Not only are they able to think about it, but Estragon is actually quite excited about the hanging since it could lead to an erection. Another element of a comedy comes in as ‘hope’ where they decide to continue waiting for Godot before going further with the idea of hanging themselves (Beckett, 1952). What the audience gets as a communication from Beckett is that the seeking of death to end misery is a perfect element of a

Relegion and marraige health Assignment Example | Topics and Well Written Essays - 500 words

Relegion and marraige health - Assignment Example Two related journals will be used to further substantiate the findings. Studying this topic will help us understand the influence religion has on marriage. The findings of religion health relationship have tremendously increased over the years. It will help in making informed decisions on how religion affects marriage and how to handle this situation. The questions asked are, The relationship between marriage and religion is complex in the context of church attendance during a week. Many of researches carried out have shown a deep relation as to why some marriages are not healthy due to one party in the marriage frequenting the church a lot in a week. Contrary to that, also different results have been derived from the same hypothesis. Some marriages have grown healthier because of frequenting the church (Marks). Irrespective of the religious affiliation, the results of the studies differ a little when it comes to the health of the marriage. It has been found that married couples that attend the church many times a week together have a healthier marriage than married couples who do not frequent the church together In this paper, the z-test was used to get these results. The test was used to sample thought of over 30 people. The valuable measures are H0: P = P0 against H1: P>

Why Religion and God Are Not Necessary in Modern Day Society Essay Example for Free

Why Religion and God Are Not Necessary in Modern Day Society Essay 88% of us claim to be religious. Religion has been around since 223,000 BCE. The world would be nothing without it. You can’t get a sense of history or the language of Britain without having to study religious texts. But is religion necessary in the 21st century? The simple answer is no. No, we don’t need to believe in religious stories to feel comforted, no we don’t need to believe in an omnipotent being, no we don’t need to believe in God to be good people and no, religion is certainly not necessary in modern day society. As an atheist and a humanist, people often ask me how I can possibly be a good person or have moral values. This makes the erroneous assumption that the only reason they aren’t out mugging, murdering and mutilating is that they are afraid of God; that the only reason they are good is because they are scared to be bad, which is a very ignoble reason to be good. How contemptible would we be if the only reason we didn’t kill was because we were scared of getting punished? The reason we should be good is completely the opposite. Because there is no afterlife, such as heaven or hell, we have only one life here on Earth. Because of this, we should live it to the best we can, and be good people. So no, believing in a religion is emphatically not necessary to be a good person. One thing that always crops up in a debate of this kind is that religion comforts people so why should we fight against it? The answer is simple; because it’s not true. If your father died, it would be comforting to tell you that he hadn’t died, he was away fighting against evil in a faraway land, but that doesn’t mean that we should let your mother tell you that. It’s false. Surely, as intelligent people, we should prefer the truth over something that comforts us, leaving a trail of false hope behind. Prayer, similarly, gives false hope. People all over the world are praying for loved ones in hospital, or another type of trouble. The facts remain. Prayer only â€Å"works† an infinitesimally small amount of the time for Christians. The same applies to Muslims, and Jews and Hindus and Sikhs, etc. Realistically, I would get the same success results by praying to a rock. There is no proof it works. Prayer has an ugly side. There are people in the world who are throwing away treatment for their life threatening illness, all under a false pretence that God will heal them. These people die year after year, but still more and more people are refusing real, medical help. Religion is absolutely not necessary to comfort the grieving or needy. Let’s focus on our country for a moment. In 2011, the UK’s census found that 55% of adults in the UK say they are Christian. One week after, the Richard Dawkins Foundation for Reason and Science put out a poll by ipsos mori directed to those who were down as Christian. When asked why they think of themselves as Christian, the research found that fewer than 28% say one of the reasons is that they believe in the teachings of Christianity. People are much more likely to consider themselves to be Christian because they were christened or baptised into the religion (72%) or because their parents were members of the religion (38%) than because of personal belief. Many who self-identify as Christian hold beliefs that some churches would consider to be incompatible with traditional Christian teaching, such as astrology and reincarnation (27% in each case), ghosts (36%) and fate (64%). Asked why they had been recorded as Christian in the 2011 Census, only 31% said it was because they genuinely try to follow the Christian religion, with 41% saying it was because they try to be a good person and for some unfathomable reason associate that exclusively with Christianity. When asked where they seek most guidance in questions of right and wrong, only 10% said it was from religious teachings or beliefs, with 54% preferring to draw on their own inner moral sense. How can we possibly say that religion is necessary in the UK in the 21st century when we are clearly no longer a â€Å"Christian nation†? Religion is in no way necessary for the good of the country anymore. So, when religion professes to be necessary for moral, supporting or national reasons, it’s wrong. Rather than helping people cope with death, helping people make moral decisions or creating the â€Å"backbone of our society†, as the Catholic Church professed in 2001, what does religion do in the modern day? Well, religion leaves a trail of false hope. Religious buildings avoid ? 44,041,939,000’s worth of taxes which still have to be paid by someone, so the taxpayer has to then give, give, give. Religious organisations such as the Catholic Church spread lies like â€Å"condoms increase the chance of getting AIDS†, leaving thousands of people infected in Africa. Religion segregates children in faith schools; it halts scientific progress and all of this to do with an outdated, unsubstantiated, fabricated fairy tale written thousands of years ago. Religion is not necessary and never again will be.