Advances in wireless networking and the Internet move us toward ubiquitous and embedded computing. Ubiquitous and embedded computing enhances computer use by making computers available throughout the physical environment while making them effectively invisible to the user. In the ubiquitous and embedded computing era, computers in the traditional sense gradually fade, and information mediated by computers is available anywhere and anytime through devices that are embedded in the environment. Radio Frequency Identification (RFID) is one of the key technologies of the ubiquitous and embedded computing era. RFID is a technology used to identify, track, and trace a person or object and enables the automated collection of important business information. RFID minimizes human intervention in the person and object identification process by using electronic tags and is expected to complement or replace traditional barcode technology. RFID is a highly beneficial technological advancement which ultimately may change the way of doing business. This study examines the RFID adoption decision process and proposes a model predicting the likelihood of adopting RFID within organizations in the healthcare industry. A considerable number of studies have been conducted regarding organizational information technology (IT) adoption, but the nature of the organizational IT adoption process is still not well understood. It is even posited that the only consistency found in the organizational adoption literature is the inconsistency of research results. The inconsistency of results is partially explained by changes in technological, organizational, and environmental statuses. Therefore, factors explaining traditional IT adoption may not justify RFID adoption and should be revisited and revalidated. In addition, given the ongoing importance of RFID, it is very important to identify the unique factors that contribute to the likelihood of adopting RFID. In this study, an organizational RFID adoption model is proposed and empirically tested by a survey using a sample of 865 senior executives in U. S. hospitals. The model posits that three categories of factors, technology push, need pull, and decision maker characteristics, determine the likelihood of adopting RFID within organizations. The relationships between those three categories and the likelihood of adopting RFID are strengthened or weakened by organizational readiness. This study may serve as the theoretical and empirical basis for research on other forms of ubiquitous and embedded computing systems.

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Background: Much has happened in information technology in the last decade, and the amount of information someone can be exposed to is enormous. There are many digital information channels today used at different organizations. This research study has investigated which channel is used the most, and if there are any methods for handling the flow of information. With these tools and methods, together with a sufficient literature review a proposed model was developed to aid organizations with their information flow. Aim: To conduct research in the field of internal communication with focus on digital channels, to finally come up with what tools and methods can be used for improved internal communication, and to propose a model for this. Method: Three sources of data collections have been used. The first one is semi-structured interviews, where six volunteers have participated, the age ranging from 31-60. The targeted volunteers were the managers, and the employees of the organizations. The second is surveys where 14 volunteers contributed, where we used snowball sampling. The third is a document study that consists of research-generated literature review. Results/Conclusion: Our analysis concluded that the most useful tools for communicating with digital channel sare, namely, email, intranet and telephone. However, the usefulness of the tools decline rapidly when too much unnecessary information flows in the wrong channels. What this research study came up with regarding contribution was an easy to use four step model to be able to classify the information and use the correct channel for it. Working alongside this model, will help with minimizing information overload in the channels used for communication. It is also important from an organization perspective when onboarding employees to learn which channels are used for which kind of information.

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Syftet med uppsatsen är att undersöka internationella studenters motivationsfaktorer för att studera utomlands och deras val av Malmö högskola, Sverige. Uppsatsen undersöker kulturella skillnader som de internationella studenterna upplever när de studerar i Sverige och om de upplever att deras kulturella identitet förstärks eller försvagas. Uppsatsen baseras på en induktiv, kvalitativ metod. För att få en djupare förståelse av de internationella studenternas situation och erfarenheter utfördes både individuella intervjuer och gruppintervjuer. I teoriavsnittet definieras begreppen kultur, kulturell identitet och interkulturell kommunikation samt begreppen asserted respektive assigned identitet och thick respektive thin identitet. Studiens resultat visade hur olika motivationsfaktorer påverkade de internationella studenternas val att studera utomlands, att kulturella skillnader blev tydliga genom vardagliga möten i det svenska samhället och på högskolan, och att studenternas kulturella identiteter visade sig vara mer markerade under studenternas vistelse i Sverige. Jag menar att en ny omgivning påverkar de internationella studenterna, och att deras kultur och kulturella identiteter blir mer påtagliga. / The research study aims at exploring the relationship between international students’ motivational factors to study abroad and the choice of Malmö University, Sweden, considering each student’s main “push” and “pull” factors. The research study seeks to examine the international students’ experiences of cultural differences while studying in Sweden. Furthermore, the study investigates whether the international students cultural identity are being reinforced or weakened. Not much previous research on international students´ motivations, cultural differences and cultural identity has been done; however, some related researches provided me with knowledge and acted as guidelines for the research study. The research study is based on an inductive, qualitative research method, and the data was collected through semi-structured and focus group interviews. In respect of the implications to define culture and cultural identity the data will be explored through a theoretical framework of intercultural communication and the theory of asserted and assigned identity and thick and thin identity, respectively. The findings of the research study showed different motivational factors affecting the international students’ reason to choose study outside their origin country. The cultural differences experienced were explained as being caused by everyday encounters in the Swedish society and educational system. The students studied experienced that their cultural belonging became more evident as they were living in Sweden. I believe that an unfamiliar social surrounding, along with the circumstance of being international students in a society that is different from the one at home, make culture and cultural identity more important and evident to the people living there.

This simulation study was carried out at a company in the automotive industry. In their factory, the company manufactures gearboxes, where the gearbox assembly is one step in the manufacturing process. In the main assembly line, many different gearbox variants are manufactured, each with its own cycle time in the different assembly stations. Due to this variation in cycle times the throughput in the main assembly line can fluctuate depending on which gearbox variants are produced. To maintain a desired throughput a tool for forecasting the throughput would be of great value to the company. Due to the large number of gearbox variants, the company also experiences difficulties understanding if there are stations in the assembly which are recurring bottlenecks. The purpose of this project is to create a tool that can forecast the daily throughput of the main assembly line and identify bottlenecks in the main assembly line. The purpose is also to investigate whether some stations often are bottleneck stations during a certain period. The model evaluation was based on validation of input-output-transformation. A bottleneck analysis based on the active times of the stations was carried out with the best-performing model. The best-performing model version resulted in 68 percent valid forecasts for the 57 historical production days. The forecasts were valid for all historical production days which were Mondays, Tuesdays, Wednesdays, and Thursdays. For Fridays and Sundays, 25 and 0 percent were valid, respectively. A bottleneck analysis was carried out for 37 historical production days where the result showed that, based on the share of active time, a single station was identified as the bottleneck station for all days. The difference between the bottleneck station’s share of active time and other stations’ share of active time was deemed small enough to be within the error margin. Additionally, the queues in the main assembly line indicated that the bottleneck was located within another group of stations. Due to the ambiguity of the results, the conclusion drawn was that the main assembly line did not experience any clear bottleneck station during the 37 historical production days. / <p>Examensarbetet är utfört vid Institutionen för teknik och naturvetenskap (ITN) vid Tekniska fakulteten, Linköpings universitet</p>

Arch-shaped microelectromechanical systems (MEMS) have been used as mechanical memories, micro-sensors, micro-actuators, and micro-valves. A bi-stable structure, such as an arch, is characterized by a multivalued load deflection curve. Here we study the symmetry breaking, the snap-through instability, and the pull-in instability of bi-stable arch shaped MEMS under steady and transient electric loads. We analyze transient finite electroelastodynamic deformations of perfect electrically conducting clamped-clamped beams and arches suspended over a flat rigid semi-infinite perfect conductor. The coupled nonlinear partial differential equations (PDEs) for mechanical deformations are solved numerically by the finite element method (FEM) and those for the electrical problem by the boundary element method. The coupled nonlinear PDE governing transient deformations of the arch based on the Euler-Bernoulli beam theory is solved numerically using the Galerkin method, mode shapes for a beam as basis functions, and integrated numerically with respect to time. For the static problem, the displacement control and the pseudo-arc length continuation (PALC) methods are used to obtain the bifurcation curve of arch's deflection versus the electric potential. The displacement control method fails to compute arch's asymmetric deformations that are found by the PALC method. For the dynamic problem, two distinct mechanisms of the snap-through instability are found. It is shown that critical loads and geometric parameters for instabilities of an arch with and without the consideration of mechanical inertia effects are quite different. A phase diagram between a critical load parameter and the arch height is constructed to delineate different regions of instabilities. The local water slamming refers to the impact of a part of a ship hull on stationary water for a short duration during which high local pressures occur. We simulate slamming impact of rigid and deformable hull bottom panels by using the coupled Lagrangian and Eulerian formulation in the commercial FE software LS-DYNA. The Lagrangian formulation is used to describe planestrain deformations of the wedge and the Eulerian description of motion for deformations of the water. A penalty contact algorithm couples the wedge with the water surface. Damage and delamination induced, respectively, in a fiber reinforced composite panel and a sandwich composite panel and due to hydroelastic pressure are studied. / Ph. D.

A drawbar pull (DP) test procedure was developed at the NASA Glenn Research Center (GRC) for testing and developing designs for off-road vehicles. The motivation was to develop a procedure that would produce repeatable results and could be replicated by other researchers. While developing the test methodology, it became apparent that there was a certain degree of scatter in the results among identical tests. In order to characterize the disparities, an experimental study was conducted consisting of systematically varying specific test parameters. The selected performance metric was the DP-TR (travel reduction) relation. The selected parameters were: 1) the starting terrain condition, 2) the distance traveled by the vehicle under an applied, constant DP force, and 3) the density of the prepared terrain. Respectively, these parameters were selected to observe: 1) how differences in the starting area, or "launch pad," would affect the resulting performance of a test, 2) if a steady-state region of performance exists and how does performance change with the distance traveled, and 3) the relationship between prepared terrain density and performance. These experiments were conducted in a dry, granular, cohesionless, silica based soil called the GRC-1 Lunar Soil Simulant. The results of these studies were that the variations in both the starting terrain condition and the distance traveled did not significantly affect performance. The relationship between performance and terrain density was that only in a region of low density was the TR constant; subsequently, the TR decreased steadily with increasing density. / Master of Science