<p><!-- @page { size: 8.5in 11in; margin: 0.79in } P { margin-bottom: 0.08in } --></p><p>Free fall drop testing is an important part of the development of commercial electronic components and devices. In the process of optimizing the quality of their entire product range, Sony Ericsson Mobile Communications AB have decided to review their free fall drop test equipment with the goal of increasing the precision, repeatability, and time efficiency of their drop test applications. In regard to the free fall drop test principle a robot system with management software, named Doris Drop Test System, is developed to meet these goals.</p><p>As the amount of related work for this application is as minimal as the timeframes for this project, the development process is empirical and entrepreneurial with engineering skills as the governing line of work. Combining the competence from fields such as mechanics, electronics and product development, reaching the goals is successful enabling the identifying of two different drop methods – Impact Position and Drop Position. Increasing the repeatability from approximately 10% to 85% enables anyone at any time to perform the exact mobile phone drop test. By reaching a precision of up to 100%, performing free fall drop tests aiming for testing specific mobile phone parts, optimizes the development process by faster detection of mechanical weaknesses. Achieving these results in parallel with increasing the throughput by shortening the testing time, has proven the success of the Doris Drop Test System.</p><p> </p>

<p>Abstract</p><p>Purpose/Aim: To describe in-classroom use of mobile phones amongst teenagers.</p><p>Material/Method: The data was collected through as use of focus groups and field studies.</p><p>Main results: The main findings confirm the findings of other studies on teens and mobile phones. Teens use their mobile phones for much more than just sending text messages and making calls, there are many different types of localized usages. There is also a strong emotional connection between the device, its content and the user.</p><p>Keywords: mobile phone, teens, classroom, focus groups, observation, field studies, mobility.</p>

<p>Abstract</p><p>Title: “My social extension” – Twelve girls on the relationship with the mobile phone (“Min sociala</p><p>anknytning” – Tolv tjejer om relationen till mobiltelefonen)</p><p>Number of pages: 42 (43 including enclosure)</p><p>Author: Mattias Köhlmark</p><p>Tutor: Göran Svensson</p><p>Course: Media and Communication Studies D</p><p>Period: Spring semester 2006</p><p>University: Division of Media and Communication, Department of Information Science,</p><p>Uppsala University.</p><p>Purpose/Aim: To investigate the emotional aspect of mobile phones and the source of those</p><p>emotions.</p><p>Material/Method: The data presented stems from three unstructured focus groups with participants</p><p>at the age of 16-19 years.</p><p>Main results: The key findings largely supports Vincents theories that the emotional language</p><p>guided towards mobile phones comes from the friends it allows us connect with. Also emancipation</p><p>can be seen as a driving force behind these emotions.</p><p>Keywords: mobile phone, mobility, absent present others, emancipation, cell phone, emotion,</p><p>emotional language,</p>

<p>Mobile phones have had a tremendous diffusion rate in Africa in recent years. This has brought access to telecommunication to new user groups, among them Tanzanian fishermen. But how does mobile phone use affect the way fishermen live their lives, how they pursue economic activities and how they protect themselves from vulnerability to risk?</p><p>During a field study in Tanzania, interviews with fish boat captains were conducted in order to investigate what impact mobile phone use has on the livelihood indicators empowerment, opportunity and vulnerability to risk. Our research shows that increased access to information, enabled by mobile phones brings positive effects to all indicators. Mobile phone use empowers, both through increased bargaining power and increased control over external events. Mobile phones give increased knowledge about market opportunities and a possibility to work more efficiently. Furthermore, mobile phones give fishermen a possibility to take measures to decrease the risks they are exposed to, such as emergencies out at sea. The negative effects are found negligible. These effects are most likely not isolated to Tanzanian fishermen. Communication through mobile phones can bring similar advantages to other groups that have earlier been excluded from the communication system.</p>

Mobile phones have had a tremendous diffusion rate in Africa in recent years. This has brought access to telecommunication to new user groups, among them Tanzanian fishermen. But how does mobile phone use affect the way fishermen live their lives, how they pursue economic activities and how they protect themselves from vulnerability to risk? During a field study in Tanzania, interviews with fish boat captains were conducted in order to investigate what impact mobile phone use has on the livelihood indicators empowerment, opportunity and vulnerability to risk. Our research shows that increased access to information, enabled by mobile phones brings positive effects to all indicators. Mobile phone use empowers, both through increased bargaining power and increased control over external events. Mobile phones give increased knowledge about market opportunities and a possibility to work more efficiently. Furthermore, mobile phones give fishermen a possibility to take measures to decrease the risks they are exposed to, such as emergencies out at sea. The negative effects are found negligible. These effects are most likely not isolated to Tanzanian fishermen. Communication through mobile phones can bring similar advantages to other groups that have earlier been excluded from the communication system.

This thesis aims to increase the knowledge on people with symptoms attributed to electromagnetic fields (EMF) by investigating the effects of EMF exposure and by additional description of the heterogeneous group of people reporting EMF-related symptoms. The effect of mobile phone (MP)-like radio frequency (RF) fields on symptoms, autonomic nervous system (ANS) parameters, short-term memory, and reaction time in persons with MP-related symptoms (MP participants) was investigated in a provocation study. A second provocation study investigated the effect of similar exposure on serum concentration of biomarkers in persons with atopic dermatitis. No effect of exposure was detected in either study. MP participants displayed changes in heart rate variability (HRV) during cognitive tests, but not during rest. This contrasts with earlier findings, participants with symptoms attributed to EMF sources in general (EHS participants) displayed an elevated sympathetic nervous system activity both during cognitive tests and during rest. Proposed differences between subgroups of persons with EMF-related symptoms with respect to symptoms, personality traits and stress were investigated in a questionnaire study. MP participants reported primarily symptoms from the head; EHS participants reported symptoms from many organ systems. Furthermore, EHS participants reported higher levels of anxiety, depression, stress, and exhaustion when compared with a reference group. MP participants reported higher levels of anxiety and exhaustion only. In a pilot study, 24-hour and short-term HRV were investigated in EHS participants, to examine whether the previously observed sympathovagal imbalance would still be present. There was a tendency toward increased parasympathetic activity compared with earlier recordings, and a reduction of symptoms. Twenty-four hour and short-term recordings were fairly similar for each participant; however, there were large between-subject differences. The results do not support the hypothesis of effects of MP-like RF exposure on symptoms, ANS activity, CFFT, cognitive function, or biomarkers. However, they do support the hypothesis that persons with different symptom attribution (MP and EHS) may differ also in ANS activity and psychological aspects.

Abstract Purpose/Aim: To describe in-classroom use of mobile phones amongst teenagers. Material/Method: The data was collected through as use of focus groups and field studies. Main results: The main findings confirm the findings of other studies on teens and mobile phones. Teens use their mobile phones for much more than just sending text messages and making calls, there are many different types of localized usages. There is also a strong emotional connection between the device, its content and the user. Keywords: mobile phone, teens, classroom, focus groups, observation, field studies, mobility.

Abstract Title: “My social extension” – Twelve girls on the relationship with the mobile phone (“Min sociala anknytning” – Tolv tjejer om relationen till mobiltelefonen) Number of pages: 42 (43 including enclosure) Author: Mattias Köhlmark Tutor: Göran Svensson Course: Media and Communication Studies D Period: Spring semester 2006 University: Division of Media and Communication, Department of Information Science, Uppsala University. Purpose/Aim: To investigate the emotional aspect of mobile phones and the source of those emotions. Material/Method: The data presented stems from three unstructured focus groups with participants at the age of 16-19 years. Main results: The key findings largely supports Vincents theories that the emotional language guided towards mobile phones comes from the friends it allows us connect with. Also emancipation can be seen as a driving force behind these emotions. Keywords: mobile phone, mobility, absent present others, emancipation, cell phone, emotion, emotional language,

The aim of this study was to analyse ninth graders self reported screen based activities, sedentary time and musculoskeletal symptoms and pain intensity. The other aim was to examine changes regarding musculoskeletal pain and inactivity between ninth graders from a cross sectional study in year 2004. To meet this aim, following questions were designed: How is the relationship between screen based activities, inactivity, musculoskeletal symptoms, pain intensity and differences between girls and boys? How have musculoskeletal symptoms and screen time changed since year 2004? Method: The method used for this study was a quantitative method. The research was carried out using a questionnaire that was answered by pupils from 11 schools from all over Sweden. The response rate was 85 % (n=465). The level of statistical significance was set at p&lt;0.05. Results: Mobile phones were used three times more by girls and TV Games were used seven times more by the boys.  Tablet computers were used more randomly by 80% of the youths. Headache occurred 58% and neck pain occurred 68 % with those who used mobile phone &gt;3 and &gt;5 hours per day. Backache occurred with 19% of those watching TV &gt; 3 hrs. Headache ongoing for more than a month occurred twice as much among the girls and was perceived as having a severe effect on everyday life. Boys reported neck ache and shoulder ache longer than a month somewhat to a greater extent. Nearly twice as many of the boys considered themselves being more physical active and resemble the most active person. Total sedentary time was not significant but a third of the youths reported that sitting time for 7-9 hrs during weekdays and 4-6 hrs during weekends. Differences between 2004 and 2013 showed that occurrence of ache and continuous back pain decreased whilst headache and continuous back pain increased with the boys. Conclusions: Headaches, neck pain and backaches are common among 9th graders and it seems to be a relationship with time exposure to different screen activities. Further research investigating gender differences and pain is important, in particular among girls who seem to be more vulnerable. / Studiens syfte var att analysera niondeklassares självrapporterade skärmbaserade aktiviteter, fysisk inaktivitet samt muskuloskeletala symptom, smärtintensitet och påverkan i vardagen. Vidare var syftet att göra jämförelser med resultat från en tvärsnittsstudie år 2004 i samma skolor för att se eventuella skillnader. Frågeställningarna var: Hur ser sambandet ut med skärmbaserade aktiviteter, fysisk inaktivitet samt muskuloskeletala symtom, smärtintensitet och påverkan i vardagen? Finns några könsskillnader? Hur har muskuloskeletala besvär, inaktivitet och skärmbaserad tid förändrats i jämförelse med niondeklassare år 2004? Metod: En kvantitativ tvärsnittsstudie med enkäter som besvarades av 465 elever (85 %) på 11 skolor. Populationen hämtades från SIH projektet år 2004 som bestod av ett slumpmässigt urval från skolor i hela Sverige. Resultat: Mobiltelefonen användes av tre gånger så många flickor, TV spel av sju gånger så många pojkar. Surfplatta användes aldrig eller sällan av 80 %. Nackvärk och huvudvärk förekom ofta bland 68 % respektive 58 % av de som använde mobilen &gt;3 timmar eller mer. Ryggvärk förekom bland 19 % som tittade TV &gt; 3 timmar. Huvudvärk mer än en månad förekom dubbelt så ofta hos flickor och upplevdes ha en svår påverkan i vardagen. Dubbelt så många pojkar ansåg sig mest fysiskt aktiva i vardagen och ansåg sig likna den person som är mest fysiskt aktiv. Stillasittande tid var inte signifikant men en tredjedel av ungdomarna uppgav att de sitter stilla 7-9 h på vardag och 4-6 h på helgdag. Mellan år 2004 och år 2013 ökade förekomsten av huvudvärk och pågående ryggsmärta bland pojkar. Slutsats: Smärta i huvud, nacke och rygg är ofta förekommande bland niondeklassare och samband tycks finnas med långvarig exponering av olika skärmbaserade aktiviteter Självrapporterad smärta har i jämförelse med en tvärsnittsstudie år 2004 minskat förutom huvudvärk och ryggsmärta som ökat bland pojkar. Vidare forskning kring könsskillnader och smärta är angeläget i synnerhet bland flickor som är mer drabbade.

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