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04/20/2012

Dissertation Chapter 3 - Assessment of the Advantages And Disadvantages of Green Roof Technology


Chapter 3

Research methodology

The proposed dissertation aims on analysing the advantages of Green roof technology in a city.. For this research, primary research and secondary research will be deliberated. Primary research will be conducted using the information that comes from companies or industries which preferred green roof technology. The information will be analyzed and compiled for the analysis.. The information about the management of private sectors that preferred green roof technology’ perception regarding the advantages of Green roof technology will then be presented by means of graphical representations and illustration. For this dissertation, primary research and secondary research will be preferred. Primary research is conducted using questionnaire surveys that will be sent to the government officials and private sector that deliberated green roof technology. Here, the questionnaires will be preferred to collect quantitative information and the interviews will be preferred to provide qualitative insights into the information collected.

As stated above, this research will partially base its findings through quantitative research methods because this permits a flexible and iterative attributes. During information gathering the choice and design of methods are constantly modified, based on ongoing analysis. This dissertation will also employ qualitative research method because it will try to find and build theories that will explain the relationship of one variable with another variable through qualitative elements in research. Through this method, qualitative elements that do not have standard measures such as behavior, attitudes, opinions, and beliefs about green roof technology will be analysed.

Research Design

            The dissertation has been considered exploratory, being descriptive and illustrative. To attain the purpose and goal of this dissertation, the author of this investigation opted to use descriptive attributes. The purpose of employing the descriptive technique is to describe the nature of a circumstance and state, as it takes place during the period  of the dissertation and to explore the cause or causes of a particular circumstance and state or in this case the advantages and disadvantages of the green roof technology. The author of this investigation opted to use this kind of research considering the desire to acquire direct and actual information and records from the management of private sectors that preferred green roof technology so as to formulate rationale and sound conclusions as well as recommendations for the dissertation. As has been noted by Creswell (1994), the descriptive determinants of research are to collate and garner information or information and records focusing on the present existing situation or phenomenon.  This approach has as its purpose developing a better comprehension of happenings and events in detail. Descriptive studies frequently have as their purpose the first two aims of normal science as described by Kuhn (1970, pp. 25-26):efforts to heighten the accuracy and scope with which facts are known or  identification of those facts that can be compared straight  with the predictions from theory and models. . The aim of descriptive research is to be able to make clarifications on the nature of a phenomenon in a specified, static context while viewed from a specific, fixed viewpoint.  

Two types of information and records has been considered which include the primary and the secondary information and records. The primary information and records were derived from the answers management of private sectors that preferred green roof technology gave in the self-administered questionnaire prepared by the author of this investigation. Aside from this, the information obtained from the interview also provided primary research information and records that supported the dissertation. The secondary information and records on the other hand, were derived from the findings which has been discussed on published documents and literatures related to the research problems and issues. These were based from the recent literatures related to green roof technology and the concepts cited by the management of private sectors that preferred green roof technology.

In line with attributes, the dissertation employed both qualitative and quantitative attributes. The quantitative attributes for preferred on obtaining numerical findings was preferred with the survey method. The interview on one hand, made up the qualitative move towards the dissertation as this for preferred on personal accounts, observations, description as well as individual viewpoints of the management of private sectors that preferred green roof technology. This dissertation employed the combined attributes so as to overcome the limitations of this dissertation.  

Participants

The management of private sectors that preferred green roof technology have been chosen came directly from the local people of London who have first hand experience on the said technology.  All of these participants were chosen through random sampling. This sampling element is conducted where each member of a population has been given an equal chance to become part of the sample. As all members of the population have an equal opportunity of becoming a research participant, this is said to be the most capable sampling procedure. To be able to conduct this sampling approach, the author of this investigation defined the population first, listed down all the members that will be part of the population, and then identify members to make the sample. For this purpose, a self-administered survey questionnaire in Likert format has been provided to the management of private sectors that preferred green roof technology to answer. 

Nonetheless, due to time and budget constraints, the author of this investigation opted for having a small sample only In this regard, the dissertation will only consider 50 managers, architects, building owners of the building as an architect, manager or owner that preferred green roof technology Nonetheless, upon analysis, only managers have answered the entire questionnaire. They are chosen to ensure that the information and records that will be collated and accumulated is pertinent.

3.3       Research Instruments

For this dissertation, two research device and tools were preferred to evaluate the relationship of the two contexts. These research device and tools included the survey questionnaire methods. A self-administered questionnaire was distributed to the chosen managers that have knowledge in green roof technology of London. The questionnaire given to the management of private sectors that preferred green roof technology aimed to assess Green roof technology and other relevant issues. Aside from this, this also objects to evaluate the advantages and disadvantages of Green roof technology as perceived by the management of private sectors that preferred green roof technology in terms of the mentioned aspects above. This focus of the assessment was based on the principles introduced by various authorities.

The questionnaire was structured in such a manner that management of private sectors that preferred green roof technology will be able to answer it easily. Thus, the set of questionnaire has been structured and formed using the Likert format with a five-point response scale. A Likert Scale is known as a rating scale that requires the participant to indicate his or her degree of agreement or disagreement to a statement. In this type of questionnaire, the management of private sectors that preferred green roof technology were given five response choices. These selection and choices served as the quantification of the participants’ agreement or disagreement on each itemized question. Below are the designated quantifications preferred in the questionnaire?

 

5

Strongly Agree

4

Agree

3

Uncertain

2

Disagree

1

Strongly Disagree

 

 3.4. Statistical Actions

The following are the statistical actions preferred for this research dissertation:

1.     Percentage. Percentage is preferred as descriptive statistics, which is relating a part to the whole. This is preferred in describing some personal characteristics of the management of private sectors that preferred green roof technology of the dissertation such as age, gender and others. The formula in computing percentage is as follows:

n

% = -------- x 100        ;

N

n – number of responses

N – total number of management of private sectors that preferred green roof technology

 

2.     The Likert scale was preferred to interpret items in the questionnaire. These answers and responses were based on the management of private sectors that preferred green roof technology’ assessment of the green roof technology. There were instances that the management of private sectors that preferred green roof technology were asked to rate the effectiveness of implementing the phases in the investment process.

The range and interpretation of the five-point scale are shown in Table 1.  

 

Table 1: The Five-point Likert Scale

Scale

Range

Interpretation

5

4.50 – 5.00

Strongly Agree

4

3.50 – 4.49

Agree

3

2.50 – 3.49

Uncertain

2

1.50 – 2.49

Disagree

1

0.00-1.49

Strongly Disagree

 

3.     Weighted mean was considered to measure the general response of the survey samples, whether they agree to a given statement or not.

The formula in computing weighted mean is as follows:

                                    Where:           f – weight given to each response

                                                            x – number of responses

                                                            xt – total number of responses

 

Results of this survey administration were presented in tables. Excerpts from the interview were integrated based on the analysis outline. Relevant literatures to support the findings are also considered by the author of this dissertation.  

 

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