Simulation and analysis of the effects of room surface reflectance combinations on a proposed retrofit illumination system of an office

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Subarna Roy ◽  
Sudipta Majumder ◽  
Sourin Bhattacharya ◽  
Imran Hossain Sardar

Purpose An indoor office space should not only provide adequate illuminance on horizontal planes but also cater to the physiological and psychological requirements of the occupants. This paper aims to describe a lighting simulation-based work conducted in Kolkata, India which modeled an indoor office to investigate the effects of variation in room surface reflectance combinations on user perception, mean room surface exitance (MRSE), average horizontal illuminance and overall uniformity of horizontal illuminance. Design/methodology/approach A fluorescent illumination system–based office space was modeled and retrofitted with tubular LED lamps in DIALux. Simulations were conducted for 16 different room surface reflectance combinations and a five-point Likert scale-type survey questionnaire was formulated to conduct a survey with 32 test subjects to assess the subjective preferability of each resultant light scene. Findings Simulation results demonstrate that the relationship between average horizontal illuminance and MRSE as well as between average horizontal illuminance and overall uniformity of horizontal illuminance, was statistically significant (p < 0.001). In the conducted survey, the resultant light scene arising out of the reflectance combination of wall:ceiling:floor = 60%:90%:20% was the most well-received one with 187 convinced agreements (“agree” and “strongly agree” responses). Originality/value This work found strong linear correlation between average horizontal illuminance and MRSE and between average horizontal illuminance and overall uniformity. A five-point Likert scale-type survey questionnaire with seven questions was formulated and validated with 32 test subjects (Cronbach’s alpha > 0.9295), which showed that the wall:ceiling:floor reflectance combination of 60%:90%:20% was the most favored choice.

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
AbdulLateef Olanrewaju ◽  
Yien Yen Tan ◽  
See Ning Soh

PurposeThe successive Malaysian government aims to provide housing to households earning the median income and below. However, there has been continuous criticism and complaints from the media and literature on the magnitude of the defects in affordable housing. Therefore, this research has investigated the defects in affordable housing for the users’/occupants' perspectives.Design/methodology/approachWith a response rate of 69%, the research developed a questionnaire instrument that included twenty-one defects in buildings based on literature and observation. These were scored on a 5-point Likert scale ranging from very common to least common. Twelve causes of defects measured on a five-point scale were included in the survey. Thirteen additional items that had to do with remedial actions to reduce defects were included. These were scored on a 5-point Likert scale ranging from strongly agree to least agree. The survey forms were administered to all the 152 home occupants in a Program Perumahan Rakyat (PPR) housing estate through hand delivery in a northern state in Malaysia.FindingsThe data revealed that broken doors, damaged roofs, damp walls and broken tiles in rooms were the most common defects in the housing development. It was found that defects in the buildings were caused by poor workmanship, defective materials, poor designs and bad weather. Additionally, to rectify the defects, adequate supervision is required during maintenance, the repairs must be conducted on time and there is a need to have competent maintenance organisations. Through factor analysis, the 21 defects were structured into six factors, the 12 causes were grouped into 5 factors and the 13 remedial actions were grouped into 6 factors.Practical implicationsThe information on the nature, degree and kinds of defects from the users' perspectives will dictate when repair work is to be undertaken and allow future work to be programmed and financed as part of a maintenance rolling programme.Originality/valueThis research focused specifically on “Program Perumahan Rakyat” housing development. Furthermore, none of the previous research on defects conducted attempted to categorise the defects in the buildings. The categorisation is very important for systemic decision-making because there are continuous interactions amongst the defects, causes and remedial actions.


2017 ◽  
Vol 45 (4) ◽  
pp. 544-561
Author(s):  
Monica D.T. Rysavy ◽  
Russell Michalak ◽  
Alison Wessel

Purpose The purpose of this paper is to examine eight years of quantitative and qualitative student feedback on library services collected through an institution-wide student satisfaction survey. Design/methodology/approach This paper utilizes data collected during an eight-year period from the college’s student satisfaction survey. This survey contained 40 questions which addressed topics concerning the college’s 13 major departments. Six of the questions were devoted to library services. Findings Over the eight years surveyed, across all divisions surveyed (undergraduate students, graduate students and graduate Saturday students), students on average tended to select “agree” or “strongly agree” with the following six questions asked: The materials in the library meet my course requirements. The library has enough laptop computers for student use. The instructional materials for using the online databases are helpful. The library hours match my schedule and needs. The library equipment is in good working order. The library is generally quiet and suitable for study. Originality/value This institutionally crafted, mixed methods survey was deployed over an eight-year period at a relatively minimal cost (in-house staff hours were used to analyze the data gathered and paper Scantron sheets were used to deploy). Furthermore, rich data were gathered from a relatively simple instrument and this information was used to make institution-wide decisions.


2017 ◽  
Vol 13 (3) ◽  
pp. 42
Author(s):  
Nasreddin Ramadhan Dukhan ◽  
Norhisham Mohamad ◽  
Asbi B Ali

This study aims to test the influence of the senior management’s support as a moderating variable on the relationship between the independent factors (Training, Empowerment, Motivation and Communication) and the dependent variable (Performance of Employees). (SEM-AMOS) is used to test the impact of the moderating variable. Where it is depended on the method of sampling or analysis of what is known as multiple-groups analysis. The paragraphs of the senior management’s support variable are collected and divided into two groups according to the mean of the total paragraphs. In addition, according to the relative weights given to the paragraphs of the questionnaire, using a five- point’s Likert scale: 1= strongly disagree to 5 = strongly agree. The first group consisted of the grades less than the mean and it is considered as the group which is non-supporters of the existence of support. While the second group consisted of the grades higher than the mean and considered as the group which is a supporter of the existence of support. The study found that the model of study in the presence of the support of the senior management’s is appropriate for the second group and inappropriate in light of the lack of support by the senior management’s support for the first group.


2021 ◽  
Vol 1 (1) ◽  
pp. 49-54
Author(s):  
Musliadi Musliadi ◽  
Reski Yusrini Islamiah Yunus ◽  
Muhammad Affan Ramadhana

This study investigates students' perception of the use of YouTube to facilitate undergraduate students' speaking activities. The method used in this research is descriptive quantitative research. The sampling system is done randomly and takes 40 students as a sample. The questionnaire has two parts, followed by ten questions with five answer choices using a Likert scale covering strongly disagree to strongly agree. The result of the study shows that 80% of students access YouTube because YouTube is very interesting, 75% of students say YouTube is an easy media to access, 80% of students say YouTube can be used as a learning resource (80%), and 85% of students use YouTube as a medium for doing speaking tasks. The student response to the use of YouTube as the media of facilitating students' speaking tasks is very positive, where 72% of students stated they strongly agreed if the practice of speaking through YouTube was applied, and 20% of students agreed. In general, student responses in using YouTube to facilitate students speaking activities in distance learning during the Covid-19 pandemic are very positive.


2020 ◽  
Vol 3 (2) ◽  
pp. h33-38
Author(s):  
SHAUQAT ADAM SHAMSUL JIHAR

New history is created in Malaysia. After over six decades of Federal rule, the Barisan Nasional (BN) government has been replaced by a coalition of opposition parties, the Pakatan Harapan (PH) in the most recent general election. PH also managed to form several state governments traditionally held by BN in Peninsular Malaysia. This study aims to seek the perception of the Malays in West Malaysia in accepting the return of Tun Dr. Mahathir Mohamad into power. It focuses on the so-called political comeback of Tun Dr. Mahathir Mohamad – the first leader to be appointed Prime Minister twice considering this rarely happens in Malaysia. This study was conducted in West Malaysia involving eighty-eight respondents using the 5-point Likert-scale survey questionnaire. Respondents were given an option to answer the questionnaire in Bahasa Malaysia or English. The general result showed that perception towards political issues in Malaysia, especially with regard to Tun Dr. Mahathir Mohamad’s comeback drew mixed reactions. On the same note, it showed that people could have lost their hopes and direction of Malaysian politics.


BJPsych Open ◽  
2021 ◽  
Vol 7 (S1) ◽  
pp. S15-S15
Author(s):  
Patrick Clements ◽  
Aidan Turkington

AimsThis study explores the different attitudes among fourth year medical students in Queen's University Belfast to Electroconvulsive Therapy (ECT) and investigates whether these are influenced by teaching and exposure to ECT during their undergraduate psychiatry placement. In particular we sought to determine firstly, correlates of baseline attitudes to ECT and secondly, whether specific forms of ECT teaching improved attitudes to ECT during their placement.MethodThis study was conducted in Queen's University Belfast and agreed with their ethics committee. Participants completed a questionnaire at the beginning of their psychiatry placement and another questionnaire in the second half of their placement. The first questionnaire captured background information and baseline attitudes. The second questionnaire recorded the educational and clinical experience gained on ECT during placement (for example lectures, tutorials, informal teaching, observing ECT and interacting with ECT patients), in addition to attitudes to ECT at this timepoint. Attitudes to ECT were assessed on a 5-point Likert scale. A positive attitude to ECT was defined as scoring agree/strongly agree on a 5-point Likert scale to the statement “I would recommend ECT for a patient if clinically indicated”.Result187 students were interviewed at both time points. At the outset of the psychiatry placement 66% of students reported a positive attitude to ECT. Positive attitude was associated with age: 72% of students under 24 had a positive attitude to ECT vs 58% of students over 24 (χ2 = 3.5; P < 0.05). Of students who had previously attended a lecture on ECT (n = 117) 83% had a positive attitude to ECT vs 42% of those who had not previously attended a lecture (χ2 = 33.5; P < 0.001).Attitudes to ECT significantly improved during the placement (66% vs 94% positive; t = 7.97; P < 0.001). Students who attended a lecture on ECT during the psychiatry placement were more likely to have a positive shift in attitude (67% vs 49%; F = 6.0; P = 0.01). No other specific teaching modality was associated with a positive shift in attitude.ConclusionWe conclude that undertaking a Psychiatry placement and particularly having a lecture on ECT significantly improves attitudes of medical students to ECT. It is therefore important that lectures on ECT are included in the medical undergraduate curriculum to allow students to be accurately informed about this essential treatment for a number of psychiatric disorders.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mohamed Marzouk ◽  
Heba Elsaay ◽  
Ayman Ahmed Ezzat Othman

PurposeThis research is built up upon exploring the concepts of building information modeling (BIM) adoption and strategy formulation with the aim to develop a strategy for implementing BIM in the Egyptian construction industry.Design/methodology/approachThe development of the BIM implementation strategy was based on two pillars, namely the literature review and results of the survey questionnaire and interviews. First, the review of literature helped investigating the BIM challenges and international strategies developed to implement BIM worldwide.FindingsThe research presented recommendations to assist policymakers in Egypt to facilitate BIM implementation.Originality/valueAlthough multiple frameworks have been proposed to aid in BIM implementation, a practical strategy to implement BIM in Egypt is still lacking. Moreover, current market scale studies neglect nonsoftware aspects of BIM adoption, do not identify market gaps or reflect market-specific criteria. As such, it cannot be used by policymakers to facilitate BIM diffusion.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Bahadur Ali Soomro ◽  
Naimatullah Shah

PurposeThe present study attempts to identify the predictive power of technopreneurial-related activities (TRAs), technopreneurial self-efficacy (TSE) and technopreneurial motivation (TM) on technopreneurial intention (TE) among the nonbusiness students.Design/methodology/approachA conceptual framework is developed for investigation. A quantitative approach is adopted for this research, and the data are collected from the 282 students of the different public sector universities with a survey questionnaire. The application of structural equation modeling (SEM) is applied to investigate the impact of TRAs, TSE and TM on TE.FindingsThe results of SEM found a positive and significant impact of TRAs, TSE and TM on TE among the nonbusiness students of Pakistan.Practical implicationsThe study would be beneficial for the planners and policymakers of universities to improve modes of technopreneurship. The findings may encourage the students to develop strong beliefs, abilities and skills to start a new venture. The literature of entrepreneurship and technopreneurship may further enrich with empirical evidence of the present study.Originality/valueThe study would make technopreneurs able to deal with society's challenges.


2020 ◽  
Vol 18 (1) ◽  
pp. 227-237
Author(s):  
Agnieszka Łukasik-Turecka

The principle of equal electoral opportunities is implemented, inter alia, by allocating free airtime to political entities. In Poland, like in many other countries, the authorized committees have the right to use the public media’s airtime free of charge during election campaigns. The present article’s objective is to show the Polish solutions in this domain compared with the regulations in other countries and to present the research results and their analysis concerning Poles’ attitude to free election broadcasts – including their assessment of the broadcasts as a source of knowledge about candidates and parties taking part in the election campaign. The studies were carried out based on the survey questionnaire, which was compiled using the five-level Likert scale. The sample was selected by the stratifiedquota method (N = 971). The conclusions resulting from the survey suggest the need to retain the regulation that enables political entities in Poland to use free election broadcasts during election campaigns. At the same time, they point out that it is necessary to seek more advantageous forms and content to put airtime to appropriate use during the campaign period.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Amitesh Singh Parihar ◽  
Vinita Sinha

Purpose The purpose of this paper is to identify the strengths and areas of improvement for taking organizations one step ahead in terms of adopting digitalization, analytics and governance. Also, the paper aims to identify the organizational cultural traits that influence the adoption of digitization and technology, analytics and governance. Design/methodology/approach A quantitative analysis of survey questionnaire collected from working professionals of various manufacturing industries to find out the driving traits and the restraining traits and to propose which is dominating. Sector: manufacturing, sample: working professionals across functions and sample size: 80–100 people. Findings This research suggests the cultural traits that influence the adoption of digitization and technology, analytics and governance in any organization. Practical implications As organizations explore new ways of working, their organizational culture and employee perspective would play an important role in prioritizing the interventions. This research aims to suggest a strategy to strengthen the driving forces and/or weaken the restraining forces. Originality/value There are various papers available on the individual topics but the uniqueness of this paper is that it represents all three factors in a single research and their influencers.


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