Review of Literature Related to River Water Quality in Ireland

2.0 Literature Review2.1 River Water Quality in IrelandNational studies of Irish rivers have been carried out since 1971. In 1971, 2,900km of river channel was surveyed. The studies consisted of chemical and biological appraisals. This was before the constitution of the Environmental Protection Agency ( EPA ) , the competent authorization at the clip was An Foras Forbartha. The EPA was established in 1992 and they so became the competent authorization for H2O quality monitoring in Ireland. In 2006, the EU Water Framework Directive Monitoring Programme was implemented. From 2004-2006, 13,240km of river channel was surveyed, with biological trying carried out at 2,985 trying sites on 1,151 rivers and chemical sampling at 2,500 sites. ( EPA, 2008 ) The Monitoring Programme was put in topographic point to run into the demands of the EU Water Framework Directive ( 2000/60/EC ) , the European Communities ( Water Quality ) Regulations, 2003, Groundwater Regulations ( S.I. No 9 of 2010 ) , and Environmental Objectives European Communities ( Surface Water ) 2009. From 2007-2009, of the 13,240km surveyed the river quality showed 70 % were uncontaminated and 30 % were damaged to a greater to lesser extent. The National Water Monitoring Reports are compiled and published every three old ages. The most recent study 2011 showed that 20.1 % of rivers had high position, 48.8 % good position, 20.7 % moderate position, 10 % hapless position and 0.4 % river channel was bad position. ( EPA, 2011 )2.2 Ashlane River SourceAshlane River is sourced from Lough Gill. It flows downstream via the Garavogue River. It diverts into its ain watercourse known as Ashlane River. The River flows through Hazelwood Demesne and so through the Institute of Technology. And so out to Carton Bay which flows to Sligo Harbour. *waiting on info from Sligo Coco to finish this subdivision2.3 Water Framework Directive 2000/60/EC2.3.1 OverviewThe Water Framework Directive was introduced in 2000. It established the legal model to protect, preserve and better the quality of surface, transitional and coastal Waterss and groundwater where necessary. It besides includes modified and unreal H2O organic structures. The Water Framework Directive sets out clear deadlines. The primary aim set out in the Water Framework Directive is to accomplish at least good H2O position by December 2015. The Directive was transposed into Irish statute law by the Water Policy Regulations ( S.I. No 722 of 2003 ) , Surface Water Regulations ( S.I. No 272 of 2009 ) and Groundwater Regulations ( S.I. No 9 of 2010 ) . These ordinances govern the form of the Directive by word picture, monitoring and position appraisal programmes. The Directive besides aims to continue, protect and enhance Waterss and manage H2O organic structures based on river basins or catchments. The definition of good H2O position for surface Waterss is based on its ecological position and chemical position. The Directive set out five ecological position categories: ‘high’ , ‘good’ , ‘moderate’ , ‘poor’ and ‘bad’ . ( EPA, 2005 )2.3.2 River Basin DistrictsA river basin is defined as an country of land from which surface run-off flows through watercourses, rivers and lakes into the sea at a river oral cavity or estuary. In 2003, the designation of the River Basin Districts and competent governments were completed. For each RBD a River Basin Management Plan ( RBMP ) was developed and implemented. The chief purpose of the RBD is to make an incorporate monitoring and direction system for all Waterss within each RBD, to bring forth RBMP. ( EPA, 2005 ) Figure 1: The eight River Basin Districts of Ireland. ( Water Matters, 2007 )2.3.3 Characterisation ( Article 5 ) Summary ReportsUnder the WFD a drumhead word picture study ( article 5 ) was developed in 2004 for all RBD in their legal power. This needed: ‘an analysis of RBD characteristics’ ‘A reappraisal of the impact of human activity on the position of surface Waterss and on groundwater’ ‘An economic analysis of H2O use’ The chief aim of the word picture study was to supply a sum-up of the initial word picture at each RBD degree. To make this physical, chemical and biological characteristics of surface H2O and groundwater were assessed alongside the force per unit areas due to human activity. The study identified the H2O organic structures at hazard or non at hazard of accomplishing the ‘good H2O status’ by 2015. ( EPA, 2005 ) The word picture study has given a image of the present province of H2O organic structures within each RBD. It gives a better apprehension of the future province of all H2O organic structures and provided a starting point for the design of the ‘Programme of Measures’ . The Programme of Measure is a combination of policies and direction actions for the bar of impairment of H2O quality position utilizing a cost effectual attack. . ( EPA, 2005 ) It sets out the steps that may necessitate to be taken and developed into each RBMP of the RBD. The Programme of Measures, are steps needed to run into the aims set out in the WFD in those H2O organic structures non accomplishing or at hazard of non accomplishing good position. ( EPA, 2005 )2.2.4 River Basin Management PlansIn 2009, the RBMPs were finalised and implemented into each RBD. The RBMPs set out specific environmental aims to be achieved by December 2015. They identify the programme of measured and the actions that will be taken in achieved these marks. They besides cover aims that are non set out in statute law but that are auxiliary steps in achieves the good H2O position. The competent authorization for the execution of the RBMPs is the local governments. ( EPA, 2005 )2.2.5 Monitoring RequirementsThe monitoring demands are set out in the WFD. The monitoring of groundwater and surface-water commenced in 2007. They were assigned to several bureaus ; EPA, Local Authorities, Marine Institute, Fisheries Boards, Waterways Ireland, OPW and NPWS. The WFD lay out 3 types of monitoring that is carried out on surface Waterss in order to accomplish and protect H2O organic structures. They are surveillance monitoring, operational monitoring and fact-finding monitoring. ( EPA, 2008 ) Surveillance Monitoring ( SM ) is to build an effectual program for all future monitoring programmes, to measure long term alterations in natural conditions in order to find the non-natural and the natural alterations in an ecosystem and buttocks long term alterations as a consequence of widespread anthropogenetic activity. It is besides the demand to supply supplementing and formalizing the impact assessment process detailed in Annex 11 of the Directive Operational Monitoring ( OM ) is supervising of the countries that have been at hazard of neglecting to run into the environmental aims and find the position and to measure alterations in the H2O organic structure position that have resulted from programmes of steps. Fact-finding Monitoring ( IM ) is required in countries where the exceedance of environmental aims is unknown ; it may be due to inadvertent pollution. And where surveillance monitoring indicates that the aims for a organic structure of H2O are improbable to be achieved and operational monitoring has non been established. ( Ferreira et al. , 2007 )2.2.6 Surface Water ClassificationThe position is determined by appraisal of ecological position, ecological potency and chemical position. Surface H2O are classified as High ( A ) , good ( A ) , moderate ( B ) , hapless ( C ) and bad ( D ) position. Water organic structures of high and good position are Class A Waterss as the H2O organic structure is accomplishing the WFD demands. These H2O organic structures have really small or no pollution. Moderate, hapless and bad position are underperforming and non go throughing the WFD demands. Pollution is present in these H2O organic structures. But aim to accomplish the good H2O position by 2015 .2.5 Water Quality Monitoring2.3.1 Physical-Chemical Water Quality MonitoringPhysical-chemical monitoring four times a twelvemonth and is carried out to garner specific H2O quality features. The WFD requires monitoring of rivers for thermic conditions, oxygenation conditions, acidification position and alimentary conditions. The parametric quantities tested on river H2O include: pH, temperature, dissolved O, conduction, P, alkalinity and Suspended Solids. These trials help to place the beginnings of pollution for carry oning appraisals on ecological impacts. ( EPA, 2007 ) For Ireland the chief pollutants of concern are foods and oxygenation conditions as they cause issues such as eutrophication and organic pollution. ( EPA, 2011 ) There are three elements: a ) ‘General constituents ( physico-chemical )quality elements are as specified in WFD Annex VIII ( 10 – 12 ) , ’B ) ‘Specific relevant pollutantsare those identified by Member States as being discharged in important measures ; this is besides specified in WFD Annex VIII ( 1 – 9 ) , ’degree Celsius ) ‘Precedence substancesare specified in WFD Annex X and for present intents the listing of precedence substances besides includes the unsafe substances as per the demands of WFD Annex IX’ ( EPA, 2007 ) General constituents are the scene of the Environmental Quality Standard Values for the high/good and good centrist position. Specific relevant pollutants refers to the directive for the scene of a individual EQS for each pollutant, failure to accomplish the EQS will ensue in non run intoing the good H2O position. Priority substances every bit required by the WFD are puting a individual criterion that divides the chemical position of ‘good’ and neglecting to accomplish good’ . Failure in accomplishing any of the above criterions mentioned will ensue in non accomplishing the good chemical position by 2015. ( EPA, 2007 )2.3.2 Biological Water Quality MonitoringBiological monitoring is carried out one every 3 old ages on all rivers under the WFD. The biological quality elements measured are Phytoplankton, macrophytes, invertebrates and fish. For rivers of bad position, monitoring of macro invertebrates is required to be carried out one time a twelvemonth lower limit. Benthic invertebrates ( E.g. Mayflies, rock flies, runts and pelecypods etc. , ) are good ecological indexs of pollution as they are really sensitive to alterations in an ecosystem. E.g. Organic pollution. The community diverseness in an ecosystem will worsen in the presence of organic pollution. The more sensitive species are replaced by more tolerant invertebrates in the presence of high degrees of pollution. ( EPA, 2007 ) For the appraisal of Irish Rivers, macro invertebrates have been divided into five index groups: ‘Group A, the sensitive signifiers, Group B, the less sensitive signifiers, Group C, the tolerant signifiers, Group D, the really tolerant signifiers and Group E, the most tolerant forms.’ A Biotic Index is used, it is a quality index based on the composing and copiousness of invertebrates in a specific H2O organic structure. A Q value is applied and used to find the ecological position of the river. ( EPA, 2007 )Biotic Index ( Q )StatusBoundary EQR valueQ5, Q4-5HighHigh /Good = 0.85 Good/Moderate = 0.75Q4GoodQ3-4ModerateQ3, Q2-3PoorQ2, Q1-2, Q1BadTable 1: Biotic Indexs ( Q Values ) relation to the WFD position classs ( EPA, 2007 )2.6 Water Pollutants2.4.1 PhosphorusPhosphorus is an indispensable food in surface Waterss for workss and animate beings. Phosphorus is a food of short supply in most fresh waters. High degrees of P in surface Waterss can do accelerated growing of workss and algae blooms. The accelerated growing can take to rapid O depletion or eutrophication of the H2O. This will go forth a H2O organic structure of low dissolved O so so it can non back up aquatic life, certain fish and invertebrates. In all H2O classs across Ireland P degrees have started to demo a diminution. This could be due to the reduction of inorganic fertilizer applications, storage betterments of organic fertilizers and the rigorous prohibition of distributing periods covered in the Good Agricultural Practice Regulations and increased norm rainfall 2008 – 2009. ( Department of the Environment, Community and Local Government ( DECLG ) and the Department of Agriculture and Food and the Marine ( DAFM ) , 2013 ) In 2012, 85.4 % phosphate concentrations & A ; lt ; 0.05mg/L P and 2 % phosphate concentrations greater than 0.1 mg/L P. Overall the phosphate concentrations are worsening but the consequences are rather varied from twelvemonth to twelvemonth. ( Department of the Environment, Community and Local Government ( DECLG ) and the Department of Agriculture and Food and the Marine ( DAFM ) , 2013 )2.4.2 Ammonia NitrogenNitrogen exists in Waterss in four chief signifiers: organic N, ammonium hydroxide N, nitrite N and nitrate N. In uncontaminated surface Waterss ammonia N is typically present in the scope of 0.01 – 0.5 mg/L N. There will besides be low degrees of organic N, no nitrite and higher degrees of nitrate. In uncontaminated Waterss nitrate is the dominant signifier of N. ( Donohue, A. , Geraghty. O. , 2012 ) Elevated degrees of ammonium hydroxide in surface Waterss are unwanted as it is an indicant of organic pollution and increases oxygen demand. High degrees of ammonium hydroxide in surface Waterss are really toxic to fish life. ( Donohue, A. , Geraghty. O. , 2012 )2.4.3 Nitrate NitrogenThe Nitrates Directive ( 91/676/EEC ) was introduced in 1991 with the chief aim of diminishing H2O pollution caused by nitrates from agricultural beginnings. The presence of nitrate ( NO3- ) in surface H2O is normal at low degrees. Beginnings of nitrate are: rainfall, decomposition of dirt organic affair and fertilisers/manures. Datas from the period 2000-2003 detected that no surface H2O in Ireland had nitrate degrees & A ; gt ; 50mg/L. ( Department of the Environment, Community and Local Government ( DECLG ) and the Department of Agriculture and Food and the Marine ( DAFM ) , 2013 ) In recent old ages at that place has been a lessening in the mean nitrate concentrations across all H2O classs under the WFD. In 2012 71.5 % had nitrate concentrations & A ; lt ; 10mg/L NO3- , 1.3 % had concentrations & A ; gt ; 25mg/L NO3- . Overall nitrate concentrations have been worsening since 2007. ( Department of the Environment, Community and Local Government ( DECLG ) and the Department of Agriculture and Food and the Marine ( DAFM ) , 2013 )MentionsDepartment of the Environment, Community and Local Government ( DECLG ) and the Department of Agriculture and Food and the Marine ( DAFM ) , ( 2013 ) . 2nd Review of Ireland’s Nitrates Action Programme. Ireland: Department of the Environment, Community and Local Government ( DECLG ) and the Department of Agriculture and Food and the Marine ( DAFM ) . Donohue, A. , Geraghty. O. , Environmetal Analysis 2 Laboratory Manual. Environmental Protection 2. ( 2012 ) EPA, ( 2005 ) . The Characterisation and Analysis of Ireland ‘s River Basin Districts. Irish republic: EPA. EPA, ( 2007 ) . Proposed Quality Standards for Surface Water Classification. Water Framework Directive. Irish republic: EPA. EPA, ( 2008 ) . The Water Framework Directive – A new direction attack. Ireland ‘s Environment. Irish republic: EPA. Ferreira, J. , Vale, C. , Soares, C. , Salas, F. , Stacey, P. , Bricker, S. , Silva, M. and Marques, J. ( 2007 ) . Monitoring of coastal and transitional Waterss under the E.U. Water Framework Directive. Environmental Monitoring and Assessment, 135 ( 1-3 ) , pp.195-216. McGarrigle, M. , Lucey, J. and Cineide, M. ( 2011 ) . WATER QUALITY IN IRELAND 2007-2009. Wexford, Ireland: EPA. Water Matters. ( 2007 ) . 1st erectile dysfunction. Shannon: CarbonNeutral.

Exploring Reliability and Validity

Exploring Reliability and Validity Types of reliability and validity used in the â€Å"Values and Motives Manual† One type of testing reliability used in the article is the inters of valid scores shown by the correlation co-efficient between VMI affection and 16PF are ‘privateness’ with a coefficient of -0.41, social desirability/ impression management with a correlation coefficient of 0.4, and those with higher values (Values and Motives Questionnaire, n.d., p. 23, table 5). VMI and OPP constructs indicate two scores having a correlation coefficient of 0.7. It indicates that the scores are strongly related. As a result of strong correlation, the social desirable coefficient for the two constructs is 0.58, and a central responding correlate of 0.75. Correlation coefficients that are less than 0.5 (normal) are invalid. For VIM/OPP, the valid scores are altruism/ cynical-trusting (0.51), traditional/ detailed-flexible (-0.58), affiliation/ reserved-gregarious (0.73) among others (Values and Motives Q uestionnaire, n.d., p. 25, table 6). Sample size and nature of population The larger the sample size, the lower the standard error. A high value in the standard error reduces the validity of the test. It may indicate that the scores are different from those in the population. The samples have been selected from a population which tends to have a higher education index than the overall population in the country. The population is more sophisticated because it mainly consists of undergraduate and postgraduate students. The research outcome may be different if the sample if drawn from the country’s population (Values and Motives Questionnaire, n.d.). An opinion about the test The test is valid and reliable if it used to interpret values among college students. It includes both undergraduate and postgraduate students. However, it cannot be used to make conclusions about the country’s population.Advertising We will write a custom critical writing sample on Exploring Reliability and Validity specifically for you for only $16.05 $11/page Learn More Kaplan, R., Saccuzzo, P. (2009). Psychological Testing: Principles, Applications, and Issues (7th ed.). Belmont: Wadsworth Cengage Learning. Phelan, C., Wren, J. (2006). Exploring Reliability in Academic Assessment. Retrieved from https://chfasoa.uni.edu/reliabilityandvalidity.htm Values and Motives Questionnaire. (n.d.). â€Å"Lecture notes†.

The False Moon by Shirley Golden Essay Example

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The Case Study of Club Med Essay Example | Topics and Well Written Essays - 1000 words

The Case Study of Club Med - Essay Example This cultural concept was picked up during the initial inception of Club Mediterranee whereby both Blitz and Trigano opted to create a vacation camp under the sun that could provide a relaxing experience to guests after the Second World War. Secondly, before the year 2000 it could be argued that the business was largely managed through a paternal approach of which Gilbert Trigano was cited saying that Gerard Blitz and her wife Claudine Blitz were the tutelary parents of the club. Moreover, Philippe Bourguignon who spearheaded major reforms before 2000 in the company, and enabled it to start generating massive profits was disowned by the company’s staffs because of his autocratic management style as they preferred Trigano’s paternalism approach. In regards to the force of competition, it can well be stated that before the year 2000 Club Med had managed to create a monopoly within a unsaturated market niche, which had low level of competition and to a greater extent it co uld be argued that Club Med was the among the first pioneers in the village-camp vacation resorts. According to Magretta (2011), the low threat of competition provided Club Med within an opportunity to expand faster and even diversify to other related businesses. Before the year 2000, Club Med faced low threats of competition since the village –camp vacation resorts had not yet gained wide fame and most players in the hospitality industry only focused on providing customers with high quality experience within high-class tourism facilities. In the studies by Saloner et al. (2001), the low threat of new entrants could further be attributed to the limited knowledge that potential competitors had about the operations of village camp vacation resort and the high amount of capital that was required since constructing a village required a huge pieces of land situated at strategic locations. Before the year 2000, the threat of substitutes was very eminent since there were many excell ent hotels and resorts that had been established. Moreover, substitutes presented a major competition more so for the high-end clients who preferred high-end hotels and luxurious resorts instead of the village-camps where tourist resided in camps. In regards to the buyers’ power, it was stated that because of the availability of numerous substitutes buyers wielded a lot of bargaining power and hence why Club Med offered it services at an affordable range. As for suppliers bargaining power, Magretta (2011) stated that a business organization would be able to wield more power against the suppliers if for instance the business organization buys supplies in large volumes, the switching cost of firms in the industry is low, and there is presence of substitute inputs. As for Club Med before 2000, it is correct to state that it had a stronger bargaining power because of the fact that it had a wide branch network and therefore, it bought its supplies in bulk, which means it was capab le of negotiating for better prices. Reasons for Club Med’s success between 1950s and 1990s In the writings by McLimore (1996), he attributed the success of any venture to the leadership of the venture. In regards to the case study of Club Med its success between 1950s and 1990s can largely be attributed to the exceptional leadership by Gerard Blitz and Gilbert Trigano, who

Federal Program Essay Example | Topics and Well Written Essays - 1000 words

Federal Program - Essay Example In the later years it was additionally expanded with other considerations. For instance, in 1972, it was expanded with the Clean Water act, the safe Drinking water Act in 1974, the Toxic substances control Act in 1976, and the Resource conservation and recovery act in 1976. The main effort was to make an improvement on the environmental protection. However, it also led to the creation of a number of materials. These included the Materials transportation board in 1975. This board currently forms a major part of the research and special programs administration in the DOT. The other creation was the Office of surface mining Reclamation and enforcement that was established in 1977 within the department of the interior. Since the inception of the Environmental protection agency, a particular meaning has been attached to the influence of nature. This means that the nation has been able to celebrate clean air, land, and water (OIRAOMB, 2015). The House of Representatives Subcommittee that is responsible for the oversight of the Environmental Protection agency is the subcommittee on the water resources and the environment. This has been based on the need to oversee the general matters of the issues that are related to the development of water resources, conservation and management, the control of water pollution and water related infrastructure, as well as the cleanup of any hazardous wastes. There are other subcommittees in the senate that have the oversight responsibility of environmental protection. They include the Agriculture, nutrition and forestry that are charged with the mandate to conserve forestry and natural resources. The commerce science and transportation subcommittee is charged with overseeing the ocean atmosphere, fisheries and forest guard. In addition, the energy and natural resources subcommittee deals with the regulation of energy, public lands, forests, water and power (Gibbs, 2015). Since the inception of the environmental protection agency or

Design bandpass FIR digital filter to extract sub-Hz low frequency Dissertation

Design bandpass FIR digital filter to extract sub-Hz low frequency signal - Dissertation Example The aim of this research work is to design and performance evaluation of 0.2 – 0.5 Hz Butterworth, Blackman and Chebyshev digital semi adaptive filters. For this work XILINX and MATLAB software’s were used for the design. As pert of practical research work these designs were translated Using FPGA hardware SPARTAN-3E kit. These were optimized, analyzed, compared and evaluated keeping the sampling frequency at 1Hz for 64 orders. These filters designed using software were tested by passing a sinusoidal test signal of 5 Hz along with noise and the filtered Output signals are presented. Signal to Noise ratios were evaluated, plotted and comparative analysis carried out in this paper. Keywords Digital filter, XILINX and MATLAB software’s, Field Programmable Gate Arrays (FPGA), SPARTAN-3E, DSP Chips, DIP switches Contents ABSTRACT 2 Contents 3 1. INTRODUCTION. 5 2. LITERATURE REVIEW 7 4. RESULTS AND DISCUSSION. 44 6. CONCLUSION 54 Reference list 55 1. INTRODUCTION. 1.1 Problem statement. The possibility of real time and low cost digital filtering emerged in when general purpose of microcomputers were introduced in the 1970s. The earlier designed digital filters had limited precision and speed which limited them to a restricted their application to simple algorithms and low frequency . In the 1980s, in its historical development DSP Chips which were of higher special cost were introduced (Tomlinson 1991). This contained an on chip D/A converter were incorporated and later improvements in their speed and complexity were advanced by ICS . This gave birth to the advanced digital filter design of today ( VolKenberg, 1987). Availability of F.P.G.A series kits helps researchers to take practical designs of semi adaptive band pass filters from low to high frequencies. It is on this basis that this project is designed to provide a high factor and high performance factor in attenuating frequencies which are undesirable for certain applications like the elec trocardiogram. 1.2 Objective The objectives of this project are: To inter-grate a low pass and high pass digital filters in a substrate known as band pass filter. To design FIR band pass that can help to extract low frequency of between 0.2-0.5 Hz 1.3 Scope of work The scope of this work is to design and develop a finite impulse response band pass digital filter. The following lists of objectives must be completed with the following in mind: 1. The scope of this project is making literature review which will survey on the magazine, journal, textbooks or conference papers. 2. During literature review, all the information such as theory and design of a digital filter will be explored. 3. Calculation based on Butter-worth and Chebyshev response will be done 4. Entering of the filter characteristics to generate coefficients using the FDAT tool block. 5. After the coefficients have been generated by the use of the FDAT tool block, design simulation using the FIR block will be done. 6. Th e last step in the finite impulse response band base filter design will be to hardware verify the performance of the hardware in the loop. 7. The preliminary work will use MATLAB tools and the result will compare with the theoretical result. 8. Finally, fabricate and make measurement for analysis result will be made based on the designed device. 1.4 METHODOLOGY This project will start with the background study of band pass basic concept through hole

Hume vs Kant Causality Essay Example for Free

Hume vs Kant Causality Essay Humes ultimate goal in his philosophic endeavors was to undermine abstruse Philosophy. By focusing on the aspect of reason, Hume shows there are limitations to philosophy. Since he did not know the limits, he proposed to use reason to the best of his ability, but when he came to a boundary, that was the limit. He conjectured that we must study reason to find out what is beyond the capability of reason. Hume began his first examination if the mind by classifying its contents as Perceptions. Here therefore [he divided] all the perceptions of the mind into two classes or species. (27) First, Impressions represented an image of something that portrayed an immediate relationship. Secondly, there were thoughts and ideas, which constituted the less vivid impressions. For example, the recalling of a memory. From this distinction, Hume decreed that all ideas had origin within impressions. From the distinction of perceptions, Hume created his ? microscope in order to trace all ideas back to impressions. He did this to search for the limits. If an idea could not be traced back to its impression, it was too abstruse. Hume separated the objects of human reason into two categories. First, the relation of ideas, which represented all that is ? a priori. Secondly, he created the category of matters of fact. Matters of fact made up the ? a posteriori piece of the spectrum of reason. Matters of fact are contingent, meaning they could be otherwise. In order to go beyond the objects of human reason, Hume proposed that reasoning was based upon cause and effect. Causal relations help us to know things beyond our page 2 immediate vicinity. All of our knowledge is based on experience. Therefore, we need experience to come to causal relationships of the world and experience constant conjunction. Hume stated that he shall venture to affirm, as a general proposition which admits no exception, that the knowledge of this relation is not in any instance, attained by reasonings ? a priori, but arises entirely from experience. (42) Unfortunately, our experience of constant conjunction only tells us about the past. Rationally, that is all it tells us. We can expect the effect to follow the cause, but it is not a sufficient basis to assume the effect will come from the cause in the future. These things are contingent- they could be different. The connection between these two propositions is not intuitive? it is always inferred. (480) Hume asserted that the future will resemble the past. This is the assumption underlying all our ideas of causality. If the future does not resemble the past, then all our reason based on cause and effect will crumble. When Hume proposed questions such as Is there any more intelligible proposition then to affirm that all trees will flourish in December and January, and will decay in May and June? (49), Hume demonstrates that it is not a relation of ideas that future will resemble the past; it is possible that the course of nature will change. Therefore, what happens in the future is neither a relation of ideas, nor a matter of fact. It is impossible, therefore, that any arguments from experience can prove this resemblance of past to future, since all these arguments are founded on the supposition of that resemblance. (51) Now Hume proposed that all inferences come from custom, not reasoning. Through custom or habits, we have become accustomed to expect an effect to follow a page 3 cause. This is not a rational argument. This argument centers on the theory of constant conjunction, which does not fall under either fork of reason. All inferences from experience, therefore, are effects of custom, not reasoning. (57) Hume analyzed the idea of causality by emphasizing the three demands that can be verified through observation. First he argued the aspect of constant conjunction. In this aspect, the cause and effect must be spatially and constantly existent. Secondly, he asserted that it must have temporal priority, in that, the cause had to precede the effect. Lastly, the event must have a necessary connection- we must develop an understanding of why a cause produces a certain effect. Humes critique of causation is that we cannot see it, we must infer it. For example, two billiard balls, one moving toward the next demonstrate temporal priority because one ball is moving first. Secondly, constant conjunction occurs because the balls exist together spatially and constantly. But, there is no necessary reason why this happens. Hume asserted that we can imagine a world in which the effect would be different. He then concluded that we cant get an impression of a necessary connection, we can only experience constant conjunction and temporal priority. Experience only teaches us how one event constantly follows another, without instructing us in the secret connection which binds them together. (77) We therefore conclude that reason is a limited faculty and that we have no reason to trust our common methods of argument or to think that our usual analogies and probabilities have any authority. (83) In conclusion, Hume asserted that since we do not have any impression of necessary connections, it is our expectation that believes the effect will follow the cause. page 4 The appearance of a cause always conveys the mind, by a customary transition, to the idea of the effect. (87) Since we are trained to expect the impression of necessary connection, the idea of it comes from our minds. Therefore, our belief in necessary connections of the universe is based on a rational facts. Immanuel Kant, a philosopher after Hume, sets out to reform metaphysics. Kant believed that if Hume was right, metaphysics would be impossible. But, Kant was unwilling to surrender to Humes skeptical argument, so Kant sets out to do a critique in order to explore the possibilities and reform metaphysics. Kant begins his critique searching for ? a priori knowledge within philosophy. Kant began to search for the ? a priori principles that were rationally deductible in order to explain why we perceive the things we cannot perceive. Kant believed that the only way that we could get to things necessary and universal was through ? a priori. Kant found that the concept of the connection of cause and effect was by no means the only concept by which the understanding thinks the connection of things ? a priori, but rather that metaphysics consists altogether of such concepts. (8) Kant began to examine pure ? a priori reason by establishing his critique. He stated that there are boundaries and contents. He set out to find what is inside the limitations and what is outside. Kant examined the three bodies of knowledge: math, physical science and metaphysics. Kant said that science must have necessity and universality. This places math and science within reason. Kant first divided judgement into two kinds of knowledge- analytic and synthetic. In the Prolegomena, Kant criticized Hume for having regarded mathematical judgements as analytic. Had he realized that page 5 they were synthetic, Hume would have been able to conclude that some synthetic judgements can be made ? a prior. Kant concluded that math and science fell under ? a priori synthetic judgements. This gives us universality, but it also tells us something. For Kant, knowledge must be necessary and universal qualities must come from ? a priori synthetic judgements. They have to tell us something we dont know, something completely independent of experience. This idea of Kants, completely contradicts Hume. Hume had asserted that anything based on empirical facts had no necessity, and therefore was contingent. Hume also stated that empirical facts couldnt give us universality either, because we cant know future will resemble the past. Kant stated that all Humes beliefs centered upon the fact that nothing but experience could furnish us with such connections. (24) For Hume, all science was empirical, and we could only know what happened so far. In contrast, for Kant, he said that scientific laws claim necessity and universality. It is only from ? a priori that we get universality and necessity. Kant then continued his critique to decipher if metaphysics is possible. Kant separated the faculties of the mind and the way it thinks into three distinctive categories. First, he stated that math was exhibited through intuition. The forms of intuition were ? a priori and had two capacities. First, intuition gave us space and time through pure intuition, and sensory data through empirical intuition. Then, Kant set up a metaphysical distinction between numena and phenomena. Numena represents the things in themselves, while phenomena represents the things for us. In this dichotomy we have no page 6 access to numena. The only way we can get to things outside us is through intuition, but intuition has these forms. This shows our limitations. Mathematics is not applicable to numena. We can have mathematical knowledge of phenomena. From this we can infer we have inter-subjective knowledge. Kant has given us universal and necessary knowledge in the phenomenal realm. Kant points out that the error may arise owing to an illusion, in which [he proclaim] to be universally valid what is merely a subjective condition of the intuition of thing and certain only of all objects of senses, namely for all possible experience. (39) Kant has just suggested that the error and base for all metaphysics is not distinguishing between phenomena and numena. Finally, Kant explained that everything is a distinction of phenomena and numena. We receive necessity and universality through this distinction and also from the projection that phenomena comes from certain ? a priori aspects. Therefore, the future will resemble the past, because we make it resemble the past. Kant used understanding, the second faculty of the mind to explain causality. As the understanding stands in need of categories for experience, reason contains in itself the source of ideas. (76) The function of understanding is thinking, and thinking must use concepts to be an objective thought. The presence of this objective thought verifies its actuality. Therefore, causality, for Kant, was the way in which mind puts together experiences to understand them. Kant found many problems within Humes account. Through his endeavors to prove that metaphysics is possible, and his analyzing of causality, Kant solved the problems he saw within Humes account. Specifically, in the Prolegomena, Kant stated page 7 that Hume justly maintains that we cannot comprehend by reason the possibility of causality. (57) Kant also attacked Humes ideas by describing Humes treatment of the concept of causality to be a bastard of the imagination, impregnated by experience. (5) Kant succeeded in re- establishing the objectivity of causality, a task that Hume had rejected as impossible.