Landscapes have been exploited and polluted by humans in order to obtain metals. Materials are treated as commodities: extracted, used inside our devices and appliances, then discarded as useless matter. The timespan of efficiency is shortened more and more due to obsolescence, material desire and constant innovation. That’s a paradoxical perspective compared to the deep time those metals embody, born in the outer space from star collision and arriving to Earth as meteors, 4 billion years ago. Rocks in vogue is an exploration on the material flows within the electronic devices production and their disposal. Very often the connection between consumers and source is invisible and well-masked behind the slick surfaces of our laptops and smartphones. Through the disassembling of old broken devices, the metals found inside represent values, stories and resistance. The material’s agency is expressed through low-power ceramic batteries; the elementary reaction moving from copper to iron represents a narrative of slow processes, material exhaustion and care. The batteries move from being something that supports our technological desires to statement objects that make things speak.

An ultra-lightweight buckling-restrained brace (ULWBRB) is developed using a highly ductile aluminum core and FRP restrainer. Utilization of lightweight materials results in a BRB that is 25% the weight of traditional mortar-filled tube varieties allowing easy installation in small to medium sized buildings requiring seismic retrofit without the need for heavy equipment. Construction utilizes commonly stocked materials able to be customized for required strength, drift, and geometry limitations. Analytical single degree of freedom (SDOF) and Euler buckling models are compared with published equations to determine the required restrainer stiffness (RRS). SDOF models yield RRS values 200% higher than the Euler model. Applied end moments due to frame deformation are incorporated into a modified design method that gives RRS values 50% higher than Euler model without eccentricity. RRS is provided using a bundled and wrapped FRP tube configuration using a developed shear flow method considering composite action. Uniaxial low-cycle fatigue (LCF) testing of a 6061-T6 candidate alloy provides data for a constitutive model using combined kinematic-isotropic hardening. LCF testing of round short gage coupons indicates the candidate alloy is capable of stable cycling to 2%, 3%, and 4% total strain with excellent ductility. Early fracture of specimens at 24, 18, and 11 cycles, respectively, also indicates that other candidate alloys should be examined for improved fatigue life. However, inconsistency is noted between similar tests of 6061-T6 that were able to achieve up to 76 cycles at 2.5% total strain. ULWBRB FEA models loaded monotonically consistently give higher RRS values as compared to the analytical methods. This is due to assignment of initial imperfections, longer more realistic unbraced length, higher axial loads achieved through the post-yield region, and plastic hinging potential. Cyclic simulations of braces with the same RRS values are also able to achieve reliable and stable hysteretic behavior through 21 cycles. If a less stiff restrainer is used, cumulative energy dissipation potential is reduced considerably due to pinched hysteresis loops and strain ratcheting. Applied end moments are found to have a linear effect on the RRS that can be modeled by superposition of the buckling effect plus end moment.

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I report on the iterative process of designing a mobile AI poetry system, along with a series of broad scale use cases in which different variants of the system has been tested in the wild. The project has so far resulted in the generation of about 20 million individual poems, co-created by the system together with millions of users. Apart from the design of the technical side of the system, my focus has been on how the system could be adapted to and deployed in different commercial settings. I discuss my insights related to systems support for creative processes, and how findings from these use cases could be applicable also to other AI content generation systems. / Här beskrivs den iterativa utformningen av en mobilapplikation för AI-genererad poesi, samt en serie storskaliga kommersiella kampanjer där olika varianter av systemet har testats i verklig användning. Genom detta genererades cirka 20 miljoner enskilda dikter, producerade av systemet tillsammans med miljontals användare. Förutom systemets tekniska funktionalitet beskrivs hur systemet anpassats för att distribueras i olika kommersiella sammanhang. Utifrån denna process diskuteras insikter relaterade till systemstöd för kreativa processer, och hur lärdomar från denna process kan tillämpas även i andra system för AI-genererat innehåll.

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This thesis is an explorative study aimed at the possibility of integrating tilt-based input to improve the reading experience on smartphones. Previous works from the early 2000s have been skeptical towards tilt-based navigation, deeming it unruly and imprecise. To investigate if today’s technology has unlocked new possibilities; two experimental reading methods were designed, created and tested iteratively on 20, respectively 18 participants. The first method is a reassessment of tilt-based auto-scrolling and the second is a novel approach comparable to tilt-based paging. Data from the reading sessions were collected quantitatively in tandem with qualitative data from post-session interviews. The results indicate good potential and a reading performance similar to the standard navigation method. The importance of accommodating people with different reading behaviours was also discussed. / Detta examensarbete utforskar om gyroskopiska interaktioner kan användas för att förbättra läsupplevelsen på mobiltelefoner. Tidigare forskning från det tidiga 2000-talet har varit skeptiska mot gyroskopisk navigation, på grund av dålig precision och stabilitet. För att utforska om dagens teknologi har öppnat nya möjligheter; skapades, designades och testades två experimentella läsmetoder på 20 respektive 18 deltagare. Den första metoden är en återkoppling till tidigare forskning medans den andra utforskar ett nytt sätt som liknar gyroskopisk sidindelning. Data från läs sessionerna samlades i både kvantitativ och kvalitativ form, varav den senare med semistrukturerade intervjuer. Resultaten indikerar god potential och en läsprestanda som liknar den standardiserade läsmetoden. Vikten av att tillgodose människors individuella läsningsbeteende blev också diskuterat.

This qualitative study documents a classroom teaching experiment in a semester-long undergraduate mathematics education course for 16 prospective elementary school teachers. The purpose of this study was to investigate how social aspects of the classroom environment facilitated the collective mathematical learning of place value and whole number operations by preservice elementary school teachers. Design-based research methodology was used for formulating the study. A hypothetical learning trajectory and instructional sequence related to place value and operations were created and refined in the two semesters prior to this study. The instructional sequence was in its third iteration for this study. The developmental levels that children progress through in learning place value and operations were used in identifying the learning trajectory and supporting tasks in which the preservice teachers were asked to engage. A large portion of the instructional sequence involved a setting of base eight instead of base ten. The sequence returned to base ten in order to discuss whole number operations and alternative strategies for operations in an effort to further develop the preservice teachers' conceptual understandings of place value and operations and to examine children's thinking strategies. Data were collected through video-taped recordings of class sessions, audio-taped recordings of table discussions and research team meetings, field notes, and journals written by the research team. Sixteen preservice teachers participated in the study which lasted over 5 class sessions of 3 hours and 10 minutes each. The emergent perspective which attempts to coordinate the individual learning and the social aspects of the classroom that support collective learning was used as an interpretive lens for data collection and analysis. The social aspects along with some aspects of individual student understandings together give an indication of collective mathematical understandings of the students as a whole group. Social norms established were: a) the expectation of providing explanations and justifications for solutions and solution methods, b) making sense of each other's solutions and c) asking questions of classmates or the instructor. Sociomathematical norms that were valued but not fully established were: a) criteria for different solutions and solution methods and b) criteria for what constituted a good explanation. Data analysis for the establishment of classroom mathematical practices was conducted using Toulmin's argumentation model (Toulmin, 1969). A three phase approach described by Rasmussen and Stephan (in press) was used in determining what constituted a classroom mathematical practice. The classroom mathematical practices that facilitated student learning in this study were: a) unitizing, b) flexibly representing numbers, and c) reasoning about operations. This study led to the refinement of the hypothetical learning trajectory and further progress in defining an instructional theory of how preservice teachers may come to understand place value and whole number operations.

In this work, I address challenges of situated alienation from people and place. Using interaction design for placemaking, light is shed on a design space of social places with opportunities for planned and spontaneous activities to be done alone, with known people or with strangers. In research through design, four conceptual design instances were created, drawing from first-person and participatory perspectives, to unpack potentials for engagement and considerations for encompassing respect (meaning vigilant of neoliberal capitalist and masculine power relations). I contribute with sensitizing questions making interaction design aspects more accessible for designers entering this public design space. / Detta arbete fokuserar på utmaningar om platsbaserad främlingskap från människor och platsen ifråga. Interaktionsdesign används här för placemaking, där en designrymd för sociala platser med möjligheter för spontana och planerade aktiviteter att utföra ensam, med vänner eller med främlingar utforskas. Genom en research through design-metodik med förstapersons- och participatory-perspektiv skapades fyra designkoncept som användes för att tydliggöra potentialer för engagemang och omtanke för allomslutande respekt (vilket berör neoliberala kapitalist och maskulina maktrelationer). Jag bidrar med känsliggörande frågor som gör interaktionsdesignsaspekter mer tillgängliga för designers som ger sig i kast med denna publika designrymd.