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- Adamsson, Mathias
(författare)
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Non-image-forming effects of light : Implications for the design of living and working environments
- 2018
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Seasonal variation in mood and subjective well-being are common at geographical locations further away from the equator. The 24-h light-dark cycle is the main time cue for synchronizing the human circadian clock to the external day and night.Nowadays, people spend more of their waking day indoors, with less exposure to the natural daylight cycle, relying on artificial lighting which differs to daylight in a number of aspects, including intensity, spectral composition and light exposure pattern.In parallel with the technology development that has been mainly driven by energy-saving reasons, it is important to investigate the non-image-forming effects of different properties of the daily and seasonal light exposure.The overall aim of the thesis was to identify characteristics of the daily light exposure that are important to support physiological and psychological needs of humans. To achieve this objective a number of research questions were posed concerning daily and seasonal light exposure, seasonal variation in physiological processes and psychological parameters, and evaluation of light exposure with respect to non-image-forming effects. The research questions were investigated in a longitudinal research design with measurements conducted each month during the year at a high latitude with large seasonal variation in day lengths.Self-report diaries and instruments for ambulatory- and static measurements were used to examine daily and seasonal light exposure in the working and living environments and for investigating the relationship between different parameters that can be used for evaluating light exposure according to non-image-forming effects of light. Seasonal variation in daily light exposure and regarding the pattern of light exposure was observed. Also, the results indicate a seasonal variation concerning the quality (i.e. spectral composition of the visible radiation) of the exposing light.Two biological markers, melatonin and cortisol, were used for investigating seasonal variation in physiological processes relating to the circadian clock. The results showed higher morning melatonin concentrations and peak level of melatonin during the winter although no seasonal change was observed concerning the phase position of the melatonin rhythm.Seasonal differences in mood and sleep-activity were studied by means of selfreport diaries and questionnaires. Seasonal variations were observed for both parameters. The results showed higher ratings of mood in the summer, particularly 6 in the evening, and a relationship between bedtime and evening light exposure and photoperiod length. Furthermore, longer sleep times was observed in the winter.Appraisal of lighting conditions in the offices during the year was rated by the use of a questionnaire. The results showed some seasonal differences concerning the perceived qualities of the light and some associations between characteristics of the lit environments and positive affect were found.Two methods, static- and ambulatory measurements, were used for recording lighting conditions in the working environments. Taken together, the results showed weak associations between the two methods.Research have demonstrated an increased need for taking non-image-forming effects into consideration when designing working and living environments, especially at geographical locations with large variations in day length where people are exposed to much of the daily light exposure at the workplace. Laboratory research has provided a good understanding of the basic concepts. However, more field research is needed. Also, current research has demonstrated that new methods of measuring and evaluating lighting conditions are needed.
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| 2. |
- Ahlgren, Jennie, et al.
(författare)
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Ethical considerations in relation to personalised nutrition : An overview of Work Package 5, with respect to ethics
- 2015
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The objectives of Food4Me work package 5 included a baseline assessment of the ethical and legal aspects of personalised nutrition at the start of the project in 2011, as well as a final assessment at the end of the project (2015), taking into account results achieved in other work packages. The initial assessment made a number of ethical issues visible, most of them relating to the consumer of personalised nutrition service. The results depicted in this publication indicate that many of the questions raised in relation to these issues remain unsolved, and in some cases they seem to be neglected in relation to the services offered by internet companies.
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| 3. |
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| 4. |
- Alexandersson, Anna, et al.
(författare)
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Digitalization of Bookkeeping in Small Organizations : The Case of Sweden
- 2023
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Ingår i: Handbook of Big Data and Analytics in Accounting and Auditing. - Singapore : Springer. - 9789811944604 - 9789811944598 - 9789811944628 ; , s. 133-162
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Bookkeeping and accounting is a prevalent feature of small organizations, which has changed face quite substantially with the advent of personal computers and, later, the Internet. The emergence of digitalized accounting procedures has taken place in a nexus of different types of actors (e.g., software developers, accountancy firms and the businesses themselves), regulatory frameworks (e.g., bookkeeping laws and accounting standards) and technical frameworks (e.g., standards for software interactions with banks and tax authorities). Altogether, this has made the paths taken in this process to be largely national. In general, this process of digitalization is largely undocumented and untheorized in research despite its profound impact on practice. Against this backdrop, this chapter has a descriptive and forward-looking approach, documenting the case of how Swedish bookkeeping practices of small organizations became digitalized, which can work as a reference case for comparisons with other national contexts.
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| 5. |
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| 6. |
- Almgren, Susanne, 1967-, et al.
(författare)
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Deltagande användare - i princip och praktik
- 2016
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Ingår i: Människorna, medierna & marknaden. - Stockholm : Wolters Kluwer. - 0375-250X. - 9789138244333 ; , s. 377-401
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 10. |
- Anderberg, Elsie
(författare)
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The relation between language and thought revealed in reflecting upon words used to express the conception of a problem
- 1999
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The way relationships between symbols and thoughts are created is a general problem in learning, mainly described as "how students' learn to mean". This general problem raises some basic questions concerning how students' relate understanding to words used in learning. The present research provides an alternative perspective on the relationship between thought and language derived from the phenomenographic tradition and from the later philosophy of Wittgenstein. The general aim of the thesis is to analyse, describe and discuss aspects of learning and understanding concerning the relationship between thought and language. In the empirical investigation twenty-seven students from two institutes of higher education, a school of nursing and a teacher training college, participated. Qualitative interviewing was the instrument used both to stimulate students' reflection on their expressed conceptions of a particular problem presented and to document their reflection. Contextual analysis was the method used. The results of the empirical analyses are presented in related descriptive categories focusing on to three aspects of learning and understanding concerning relationships between words used and conceptions of a problem; 1) the character of relationships experienced 2) the different qualities in the process of students reflecting on relationships 3) the change of conceptions The theoretical investigation concerns, on the one hand the principle differences between understanding objects of knowledge and understanding language meaning in relation to learning and on the other hand the relationship between thought and language in theories of language meaning and understanding in the philosophy of language. One of the main conclusions drawn is that the proposed identity between thought and language within the theory of representationalism, well represented in social constructivism and individual constructivism, can not be presupposed in an educational perspective on learning as it focuses too much on learning to understand language meaning more than learning to understand objects of knowledge.
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