| 1. |
- Aaboen, Lise, 1978, et al.
(författare)
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Exploring the roles of university spin-offs in business networks
- 2016
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Ingår i: Industrial Marketing Management. - : Elsevier BV. - 0019-8501 .- 1873-2062. ; 59, s. 157-166
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Tidskriftsartikel (refereegranskat)abstract
- This paper identifies different university spin-off (USO) roles related to resource interaction among business parties. It does so by mapping how USOs become part of business networks in terms of their roles relative to other parties. The theoretical frame of reference focuses on roles and resource interaction based on an industrial network approach to business markets. The empirical research is based on five cases of USOs representing a variety in terms of technology, degree of newness, sector, and area of application. As a result of the analysis, three different roles are identified: the USO as resource mediator, resource re-combiner and resource renewer. These roles reflect how USOs adapt resources to, or require changes among, business parties' resources. The paper also discusses the main resource interfaces associated with the three roles and related challenges. The paper contributes to previous research through illustrating USOs' roles relative to business parties from a resource interaction point of view, and by pointing to the establishment of new companies in business networks as a way of implementing innovation. Finally, the paper discusses the managerial implications of the research in terms of the USO's need to understand which role to take and how to develop it.
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| 2. |
- Ahl, Matilda, et al.
(författare)
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Immune response in the eye following epileptic seizures
- 2016
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Ingår i: Journal of Neuroinflammation. - : Springer Science and Business Media LLC. - 1742-2094. ; 13:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Epileptic seizures are associated with an immune response in the brain. However, it is not known whether it can extend to remote areas of the brain, such as the eyes. Hence, we investigated whether epileptic seizures induce inflammation in the retina. Methods: Adult rats underwent electrically induced temporal status epilepticus, and the eyes were studied 6 h, 1, and 7 weeks later with biochemical and immunohistochemical analyses. An additional group of animals received CX3CR1 antibody intracerebroventricularly for 6 weeks after status epilepticus. Results: Biochemical analyses and immunohistochemistry revealed no increased cell death and unaltered expression of several immune-related cytokines and chemokines as well as no microglial activation, 6 h post-status epilepticus compared to non-stimulated controls. At 1 week, again, retinal cytoarchitecture appeared normal and there was no cell death or micro- or macroglial reaction, apart from a small decrease in interleukin-10. However, at 7 weeks, even if the cytoarchitecture remained normal and no ongoing cell death was detected, the numbers of microglia were increased ipsi- and contralateral to the epileptic focus. The microglia remained within the synaptic layers but often in clusters and with more processes extending into the outer nuclear layer. Morphological analyses revealed a decrease in surveying and an increase in activated microglia. In addition, increased levels of the chemokine KC/GRO and cytokine interleukin-1β were found. Furthermore, macroglial activation was noted in the inner retina. No alterations in numbers of phagocytic cells, infiltrating macrophages, or vascular pericytes were observed. Post-synaptic density-95 cluster intensity was reduced in the outer nuclear layer, reflecting seizure-induced synaptic changes without disrupted cytoarchitecture in areas with increased microglial activation. The retinal gliosis was decreased by a CX3CR1 immune modulation known to reduce gliosis within epileptic foci, suggesting a common immunological reaction. Conclusions: Our results are the first evidence that epileptic seizures induce an immune response in the retina. It has a potential to become a novel non-invasive tool for detecting brain inflammation through the eyes.
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| 3. |
- Ahlgren, Fredrik, 1980-, et al.
(författare)
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Waste Heat Recovery in a Cruise Vessel in the Baltic Sea by Using an Organic Rankine Cycle : A Case Study
- 2015
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Ingår i: ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. - : ASME Press. - 9780791856673 ; , s. 43392-43416
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Konferensbidrag (refereegranskat)abstract
- Maritime transportation is a significant contributor to SOx, NOx and particle matter emissions, even though it has a quite low CO2 impact. New regulations are being enforced in special areas that limit the amount of emissions from the ships. This fact, together with the high fuel prices, is driving the marine industry towards the improvement of the energy efficiency of current ship engines and the reduction of their energy demand. Although more sophisticated and complex engine designs can improve significantly the efficiency of the energy systems in ships, waste heat recovery arises as the most influent technique for the reduction of the energy consumption. In this sense, it is estimated that around 50% of the total energy from the fuel consumed in a ship is wasted and rejected in fluid and exhaust gas streams. The primary heat sources for waste heat recovery are the engine exhaust and the engine coolant. In this work, we present a study on the integration of an organic Rankine cycle (ORC) in an existing ship, for the recovery of the main and auxiliary engines exhaust heat. Experimental data from the operating conditions of the engines on the M/S Birka Stockholm cruise ship were logged during a port-to-port cruise from Stockholm to Mariehamn over a period of time close to one month. The ship has four main engines Wärtsilä 5850 kW for propulsion, and four auxiliary engines 2760 kW used for electrical consumers. A number of six load conditions were identified depending on the vessel speed. The speed range from 12–14 knots was considered as the design condition, as it was present during more than 34% of the time. In this study, the average values of the engines exhaust temperatures and mass flow rates, for each load case, were used as inputs for a model of an ORC. The main parameters of the ORC, including working fluid and turbine configuration, were optimized based on the criteria of maximum net power output and compactness of the installation components. Results from the study showed that an ORC with internal regeneration using benzene would yield the greatest average net power output over the operating time. For this situation, the power production of the ORC would represent about 22% of the total electricity consumption on board. These data confirmed the ORC as a feasible and promising technology for the reduction of fuel consumption and CO2 emissions of existing ships.
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| 4. |
- Ahlgren, Fredrik, 1980-, et al.
(författare)
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Waste Heat Recovery in a Cruise Vessel in the Baltic Sea by Using an Organic Rankine Cycle : A Case Study
- 2016
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Ingår i: Journal of engineering for gas turbines and power. - : ASME Press. - 0742-4795 .- 1528-8919. ; 138:1
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Tidskriftsartikel (refereegranskat)abstract
- Maritime transportation is a significant contributor to SOx,NOx, and particle matter (PM) emissions, and to a lesser extent, of CO2. Recently, new regulations are being enforced in special geographical areas to limit the amount of emissions from the ships. This fact, together with the high fuel prices, is driving the marine industry toward the improvement of the energy efficiency of ships. Although more sophisticated and complex engine designs can improve significantly of the energy systems on ships, waste heat recovery arises as the most effective technique for the reduction of the energy consump- tion. In this sense, it is estimated that around 50% of the total energy from the fuel con- sumed in a ship is wasted and rejected through liquid and gas streams. The primary heat sources for waste heat recovery are the engine exhaust and coolant. In this work, we present a study on the integration of an organic Rankine cycle (ORC) in an existing ship, for the recovery of the main and auxiliary engines (AE) exhaust heat. Experimental data from the engines on the cruise ship M/S Birka Stockholm were logged during a port-to- port cruise from Stockholm to Mariehamn, over a period of 4 weeks. The ship has four main engines (ME) W€artsil€ a 5850kW for propulsion, and four AE 2760kW which areused for electrical generation. Six engine load conditions were identified depending on the ship’s speed. The speed range from 12 to 14 kn was considered as the design condi- tion for the ORC, as it was present during more than 34% of the time. In this study, the average values of the engines exhaust temperatures and mass flow rates, for each load case, were used as inputs for a model of an ORC. The main parameters of the ORC, including working fluid and turbine configuration, were optimized based on the criteria of maximum net power output and compactness of the installation components. Results from the study showed that an ORC with internal regeneration using benzene as working fluid would yield the greatest average net power output over the operating time. For this situation, the power production of the ORC would represent about 22% of the total elec- tricity consumption on board. These data confirmed the ORC as a feasible and promisingtechnology for the reduction of fuel consumption and CO2 emissions of existing ships.
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| 5. |
- Alfalahi, Alyaa, et al.
(författare)
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Expanding a dictionary of marker words for uncertainty and negation using distributional semantics
- 2015
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Ingår i: EMNLP 2015 - 6th International Workshop on Health Text Mining and Information Analysis, LOUHI 2015 : Proceedings of the Workshop - Proceedings of the Workshop. - : Association for Computational Linguistics. - 9781941643327 ; , s. 90-96
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Konferensbidrag (refereegranskat)abstract
- Approaches to determining the factuality of diagnoses and findings in clinical text tend to rely on dictionaries of marker words for uncertainty and negation. Here, a method for semi-automatically expanding a dictionary of marker words using distributional semantics is presented and evaluated. It is shown that ranking candidates for inclusion according to their proximity to cluster centroids of semantically similar seed words is more successful than ranking them according to proximity to each individual seed word.
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| 6. |
- Alkestrand, Malin, 1986-
(författare)
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Magiska möjligheter : Harry Potter, Artemis Fowl och Cirkeln i skolans värdegrundsarbete
- 2016
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Sedan den första Harry Potter-boken publicerades år 1997 har intresset för fantasylitteratur ökat lavinartat. Miljontals barn, ungdomar och vuxna har följt sina mest omtyckta fantasyhjältar och –hjältinnor på deras äventyr in i magiska världar, där verklighetens lagar utmanas, överskrids och ställs på ända. Men vad kan läsare lära sig om sin egen värld via karaktärernas upptäcksresor in i de magiska världarna? Och hur kan fantasylitteratur användas i klassrummet, när verklighetens maktförhållanden diskuteras? Dessa frågor står i centrum för Malin Alkestrands avhandling Magiska möjligheter: Harry Potter, Artemis Fowl och Cirkeln i skolans värdegrundsarbete.Avhandlingen fokuserar på vad tre fantasyserier för barn och ungdomar – J. K. Rowlings Harry Potter-serie (1997–2007), Eoin Colfers Artemis Fowl-serie (2001–2012) samt Mats Strandberg och Sara Bergmark Elfgrens Engelsforstrilogi (2011–2013) – kan lära läsaren om demokrati, mänskliga rättigheter och kulturell mångfald. De tre problemkomplexen utgör en del av skolans värdegrund. Alla lärare inom det svenska skolsystemet, oavsett ämnestillhörighet, har i uppdrag att inkorporera värdegrunden i sin undervisning.Med utgångspunkt i bland annat Viktor Sklovskijs främmandegöringsbegrepp, diskursanalys, intersektionell teori och litteraturdidaktiska teorier undersöker Alkestrand hur de fantasylitterära exemplen problematiserar demokrati, mänskliga rättigheter och kulturell mångfald, samt vilka kopplingar det finns till de värden som definieras i skolans värdegrund. På så sätt undersöks vilken didaktisk potential de aktuella fantasyserierna har i skolans värdegrundsarbete. Avhandlingens huvudtes är att fantasylitteratur utgör en utmärkt utgångspunkt för värdegrundsarbetet, eftersom skildringarna av de magiska världarnas maktförhållande fungerar som allegorier över verklighetens motsvarigheter, samtidigt som de skapar en främmandegörande effekt som hjälper läsaren att betrakta maktfrågor utifrån, med en distanserad blick. Det är i denna dialektik mellan närhet och distans som fantasylitteraturens magiska möjligheter konstitueras.
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| 7. |
- Alvariza, Anette, et al.
(författare)
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How to support teenagers who are losing a parent to cancer : Bereaved young adults' advice to healthcare professionals-A nationwide survey
- 2017
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Ingår i: Palliative & Supportive Care. - : Cambridge University Press. - 1478-9515 .- 1478-9523. ; 15:3, s. 313-319
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The loss of a parent to cancer is considered one of the most traumatic events a teenager can experience. Studies have shown that teenagers, from the time of diagnosis, are already extremely worried about the consequences of a parent's cancer but tend to be left to manage these concerns on their own. The present study aimed to explore young adults' advice to healthcare professionals on how to support teenagers who are losing a parent to cancer. Methods: This work derives from a Swedish nationwide survey and employs a qualitative approach with a descriptive/interpretive design to obtain answers to an open-ended question concerning advice to healthcare professionals. Of the 851 eligible young adults who had lost a parent to cancer when they were 13-16 years of age within the previous 6 to 9 years, 622 participated in our survey (response rate = 73%). Of these 622 young adults, 481 responded to the open-ended question about what advice to give healthcare professionals. Results: Four themes emerged: (1) to be seen and acknowledged; (2) to understand and prepare for illness, treatment, and the impending death; (3) to spend time with the ill parent, and (4) to receive support tailored to the individual teenager's needs. Significance of Results: This nationwide study contributes hands-on suggestions to healthcare staff regarding attitudes, communication, and support from the perspective of young adults who, in their teenage years, lost a parent to cancer. Teenagers may feel better supported during a parent's illness if healthcare professionals take this manageable advice forward into practice and see each teenager as individuals; explain the disease, its treatments, and consequences; encourage teenagers to spend time with their ill parent; and recommend sources of support.
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| 8. |
- Ambrazaitis, Gilbert, et al.
(författare)
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Acoustic features of multimodal prominences : Do visual beat gestures affect verbal pitch accent realization?
- 2017
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Ingår i: Proceedings of The 14th International Conference on Auditory-Visual Speech Processing (AVSP2017). - Stockholm : International Speech Communication Association. - 2308-975X.
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Konferensbidrag (refereegranskat)abstract
- The interplay of verbal and visual prominence cues has attracted recent attention, but previous findings are inconclusive as to whether and how the two modalities are integrated in the production and perception of prominence. In particular, we do not know whether the phonetic realization of pitch accents is influenced by co-speech beat gestures, and previous findings seem to generate different predictions. In this study, we investigate acoustic properties ofprominent words as a function of visual beat gestures in a corpus of read news from Swedish television. The corpus was annotated for head and eyebrow beats as well as sentence-level pitch accents. Four types of prominence cues occurredparticularly frequently in the corpus: (1) pitch accent only, (2) pitch accent plus head, (3) pitch accent plus head plus eyebrows, and (4) head only. The results show that (4) differs from (1-3) in terms of a smaller pitch excursion and shorter syllable duration. They also reveal significantly larger pitch excursions in (2) than in (1), suggesting that the realization of a pitch accent is to some extent influenced by the presence of visual prominence cues. Results are discussed in terms of the interaction between beat gestures and prosody with a potential functional difference between head and eyebrow beats.
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| 9. |
- Ambrazaitis, Gilbert, 1979-, et al.
(författare)
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Focal F0 peak shape and sentence mode in Swedish
- 2015
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Ingår i: Proceedings of the 18th International Congress of Phonetic Sciences. - Glasgow : University of Glasgow. - 9780852619414 - 9780852619421
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Konferensbidrag (refereegranskat)abstract
- Shape characteristics of rising-falling accentual F0 peaks of Stockholm Swedish Accent I words in narrow focus are studied in a corpus of 287 read sentences. The corpus includes statements and three types of polar questions. Results reveal a clear effect of sentence mode on the shape of the accentual rises: Statements are predominantly characterized by convex rises, questions by concave rises.
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| 10. |
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