Browsing by Subject "Mood"
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Item Open Access 3+1 Essays on the Turkish economy(2005) Yücel, Mustafa ErayThis dissertation comprise of four essays. The first essay studies the relationship between treasury auction maturity and auction interest rates. Using the Turkish auction data from 1988 to 2004, a reciprocal linkage between auction interest rates and maturities is observed, especially for the 1995-2000 period. This suggests that under an adverse shock, treasury decreases the auction maturity in order not to increase interest rates too much. A change in this reciprocal relationship is also reported for the post-2001 era. The second essay assesses the effect of USD-Euro parity on a small open economy for an economy where its exports are predominantly denominated in Euros and imports are denominated in USD. The empirical evidence suggests that a positive innovation in USD-Euro parity appreciates the local currency, decreases inflation and increases output. The third essay studies the relationship between on-budget and off-budget expenditures in Turkey and concludes that information content of the budget deficit statistics is not empty; however, it might be misleading in assessing fiscal stance for Turkey. The final essay investigates the connection between Turkish industrial production performance and the success of a popular Turkish football team, namely Fenerbahce. The success of Fenerbahce is interpreted as a proxy for the workers' mood or morale. Performing a transfer function analysis on my monthly data set, I reveal a positive feedback from Fenerbahce's success, which proxies workers' mood/morale, to economic performance. Evidence of the effects of games against domestic rivals on industrial performance is not statistically significant.Item Open Access A comparative study on soundscape in high school environment(2016-07) Çankaya, SılaThe various factors of school environments have been investigated to affect individuals psychologically and physiologically. As one of this, sound has been studied through acoustic measurements focusing on noise management approach. To create positive acoustic environment, it is vital to reveal positive and restorative effects of sounds upon the people. This approach leads to the emergence of concept of ‘soundscape’. Aim of the study is to examine the effect of soundscape on the students’ perception and mood in high-school environment. This study compares classroom and computer laboratory in Bilkent High School, Ankara. The study includes two methods as objective measurements and subjective surveys. To understand the acoustic conditions of spaces, sound levels (LAeq), Reverberation Time (T30), Speech Transmission Index (STI) and Definition (D50) were measured. Questionnaire (n=125), PANAS test (n=125) and semi-structure interview (n=50) were conducted simultaneously. SPSS and Grounded Theory were used to evaluate the subjective results. Results showed that music and natural sound sources mostly preferred to electro-mechanical sounds. Moreover, students do not believe that sound levels have an effect on their class performance or comfort level. Only sociodemographic difference was found between temperature level and gender. It is observed that soundscape creates no effect on the students’ mood. The several differences were found in perceived environment between classroom and computer laboratory. Results showed that the soundscape of a space could not be examined by objective measurements alone such as sound levels. On the other hand, established conceptual framework revealed eight categories. Generated patterns showed that soundscape depends on not only sound sources, but also the physical and social context in which they are heard.Item Open Access The effects of color temperature on performance and mood of users : a color task implementation model(2017-07) Kürkçü, EsraThis study aimed to explore the effects of color temperatures on color task performance, and also to propose a color task implementation model to be used in future research. In the study, three attributes of color were the focus in the color differentiation task. The study was conducted with 100 participants as with-in subjects design, in a full-scale office set-up under two different color temperature; warm white light (2700K and cold white light (4000K. The speed and accuracy of the color task were examined as an indication of task performance. The mood change of participants was assessed by Watson’s Positive and Negative Affect Schedule (PANAS mood measurement, self-satisfaction was assessed by Office Lighting Survey (OLS and perceived performance was assessed by questionnaire. The results showed that the total time spent for the color tasks performances have no significant. difference between 2700K and 4000K. It also showed that total accuracy of color task performances is statistically better under 4000K, compared to 2700K. Whereas color temperatures did not affect value differentiation task performance significantly, hue and chroma differentiation tasks performance were significantly better under 4000K color temperature. In terms of the effects of color temperature on mood, it is found that 4000K color temperature affected participants mood in a positive way. Also, self-satisfaction and perceived performances of participants are significantly better under 4000K color temperature.Item Open Access The Effects of correlated color temperature on sustained attention and mood of university students in learning environments(2015) Kocaoğlu, RenginThe aim of this study is to understand the effects of correlated color temperature on sustained attention and mood of university students in learning environments and to compare different color temperatures. The experiment was conducted with two different sample groups in two different lighting settings; 4000 K and 6500 K in a single phase. The participants were ninety seven undergraduate students from Bilkent University. The participants were seated in a regular lecture room and tested by the researcher. They were asked to perform three paper- based tests; one of them about the sustained attention, d2 Test of Attention, and the other two about mood, (PANAS) Positive and Negative Affect Schedule. It was found that correlated color temperature has no significant effect on concentration performance, errors of omission, total numbers of items processed. A certain conclusion could not be derived about the effect of color temperature on mood. However, color temperature has a significant effect on errors of commission and number of errors. It was found that 4000 K significantly increases errors of commission and number of errors, thus 6500 K is more appropriate for university learning environments.Item Open Access Impact of lighting arrangements and illuminances on different impressions of a room(Elsevier, 2007) Durak, A.; Camgöz Olguntürk, N.; Yener, C.; Güvenç, D.; Gürçinar, Y.This study explores whether different lighting arrangements (general lighting, wall washing and cove lighting) and different illuminances (500 and 320 lux) could affect the perception of the same space. An experimental study was conducted to investigate how the qualitative aspects of space (the impressions of a space) could be enhanced with lighting. Hundred participants were first asked to choose the most suitable lighting arrangement for each impression (clarity, spaciousness, relaxation, privacy, pleasantness and order) under the 500 lux illuminance. In the second stage, they were asked to compare the two illuminances (500 and 320 lux) for the lighting arrangement they selected in the first stage. There was a statistically significant relation between impressions and lighting arrangements, also between impressions and lighting levels. Thus, different lighting arrangements and lighting levels could be used to enhance the clarity, spaciousness, relaxation, privacy, pleasantness and order of a room. The results of this study found most suitable lighting arrangements with their illuminances for each impression, which is reported in the paper. © 2006 Elsevier Ltd. All rights reserved.Item Open Access The impact of salutogenic design on perceived environmental quality and mood in healthcare environments: a comparative case study in dental clinics(2022-05) Özgön, IşılThis thesis systematically analyzed the effect of biophilic design as a salutogenic design method on improving a patient’s perceived environmental quality and mood in dental clinic waiting rooms. For this purpose, five experts evaluated potential dental clinic waiting rooms based on their biophilic scores and selected two dental clinics to compare their waiting rooms. One hundred four patients perceived environmental quality and mood were assessed while they were waiting for their treatment in the waiting room of the two clinics. According to the results, the patients' perceived environmental quality was greater in the waiting area with a higher biophilic score. The patients' mood scores, on the other hand, did not show any significant differences across the clinics. The outcomes of this thesis lead to a better understanding of how to incorporate salutogenic design features into dental clinic waiting rooms to enhance the patient experience.Item Open Access Investigating the effect of indoor soundscaping towards employees’ mood and perception in open plan offices(2015-08) Acun, VolkanOver the past decade, soundscape studies have proposed ways to differentiate sonic environments and showed that it is not always the sound levels that matters. Meanings associated with sound sources, how they are perceived by the listener and the physical settings are equally important. On the other hand, very few studies are conducted to examine whether these principles of soundscape can be applied to indoor spaces. Aim of this research is to identify sound sources within an open office space, understand how employees’ perceive these sound sources, explore its impact on their mood and task performance. In order to achieve this goal, measurements and interviews are conducted at two different open planed offices. A user focused, subjective, approach of Grounded Theory, is used to capture the lived experience of an open plan office space and examine the effects of indoor soundscape quality towards employees’ perception of their work environment. PANAS (Positive and Negative Affect Schedule) test is conducted to explore employees’ mood. In order to understand the acoustical conditions of case study settings, in-situ measurements of sound levels (Leq), ODEON simulation of Speech Transmission Index (STI) and Reverberation Time (T 30) is used. Semi-structured interviews, as part of Grounded Theory, and PANAS test are conducted with 47 employees. Their responses are used to generate a conceptual framework which conceptualizes employees’ subjective response to the soundscape of their work environment. Generated conceptual framework showed patterns between employees' perception of sound sources, sound preference and type of work they are performing as well as the association between positive affect (PA), negative affect (NA) and soundscape.Item Open Access Long live Fenerbahçe: the production boosting effects of football(Elsevier BV, 2005) Berument, Hakan; Yucel, E. M.The connection between Turkish industrial production performance and the success of a popular Turkish football team, namelyFenerbahc¸e, is the central theme of this article. The success of Fenerbahc¸e is interpreted as a proxyfor the workers mood or morale. Performing a transfer function analysis on our monthly data set, we reveal positive feedback from Fenerbahc¸e s success, which proxies workers mood/morale, to economic performance such that the monthlyindustrial growth rate increases by0.26% with the number of games won byFenerbahc¸e in European cups regardless of where the game is played. Evidence of the effects of games against domestic rivals on industrial performance is not statistically significant. 2005 Elsevier B.V. All rights reserved.