| 1. |
|
|
| 2. |
- Lazaridis, Iosif, et al.
(författare)
-
Ancient human genomes suggest three ancestral populations for present-day Europeans
- 2014
-
Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 513:7518, s. 409-
-
Tidskriftsartikel (refereegranskat)abstract
- We sequenced the genomes of a similar to 7,000-year-old farmer from Germany and eight similar to 8,000-year-old hunter-gatherers from Luxembourg and Sweden. We analysed these and other ancient genomes(1-4) with 2,345 contemporary humans to show that most present-day Europeans derive from at least three highly differentiated populations: west European hunter-gatherers, who contributed ancestry to all Europeans but not to Near Easterners; ancient north Eurasians related to Upper Palaeolithic Siberians(3), who contributed to both Europeans and Near Easterners; and early European farmers, who were mainly of Near Eastern origin but also harboured west European hunter-gatherer related ancestry. We model these populations' deep relationships and show that early European farmers had similar to 44% ancestry from a 'basal Eurasian' population that split before the diversification of other non-African lineages.
|
|
| 3. |
- Deivasigamani, M., et al.
(författare)
-
Concept and design of exhaustive-parallel search algorithm for Network-on-Chip
- 2011
-
Ingår i: Int. Syst. Chip Conf.. - 9781457716164 ; , s. 150-155
-
Konferensbidrag (refereegranskat)abstract
- This paper presents the concept and design of exhaustive-parallel search algorithm for Network-on-Chip. The proposed parallel algorithm searches minimal path between source and destination in a forward-wave-propagation manner. The algorithm guarantees setup latency if the setup path exists. A high performance switch is designed to support exhaustive-parallel search algorithm. The NoC fabric is designed for 88 mesh architecture and its performance is evaluated.
|
|
| 4. |
- Lundegård, Iann, et al.
(författare)
-
Putting the Cart Before the Horse : The Creation of Essences out of Processes in Science Education Research
- 2014
-
Ingår i: Science Education. - : Wiley. - 0036-8326 .- 1098-237X. ; 98:1, s. 127-142
-
Tidskriftsartikel (refereegranskat)abstract
- This article addresses the problem of treating generalizations of human activity as entities and structures that ultimately explain the activities from which they were initially drawn. This is problematic because it involves a circular reasoning leading to unwarranted claims explaining the originally studied activities of science teaching and learning. Unlike other fields within social science research, this problem has not been appreciated and discussed in the science education literature and the field thus needs to be reminded of it. A heuristic specifically developed for the purposes of this article is applied to two examples taken from a much-cited research in the field. Through the examples it is argued that the practice of creating entities out of generalizations of science classroom activities leads to a number of unintended consequences. It is further argued that the stated purposes in the two example articleswould actually have been better served by investigating the entire processes through which the activities develop, as well as how the activities may change through teaching. The article concludes that through the search for explanations caused by underlying entities, science education research runs a risk of alienating its results from the activities from which it initially wanted to meliorate.
|
|
| 5. |
|
|
| 6. |
- Piqueras, Jesús, 1961-, et al.
(författare)
-
Enacting the purposes of epistemic practices to promote learning in Secondary Science
- 2013
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- In this presentation we address the issue of how teachers appropriate new concepts emerging from science education research, and how their use is transformed in actual teacher practice. We introduced the newly developed concept of organizing purposes (Wickman & Ligozat, 2010) as a tool for helping teachers plan for and assess student progression during science lessons. We video recorded meetings between teachers and researchers. Meetings concerned introducing the new concepts to the teachers and subsequently use them for planning and assessment of a teaching unit on the chemistry of food. We also video recorded all lessons, and used the introduced concepts also to jointly reflect on what happened during lessons. The results clearly show that the use of the concepts of organizing purposes and other aspects of the theoretical framework presented by the researchers was not fully adopted by the teachers until they were set in action in concrete classroom contexts. It was also important for the teachers’ engagement to recognize that changes proposed in their teaching practice improved some salient outcomes in the students. The results provide detailed insight into the mechanisms by which school science practice is slowly transformed as new concepts from research are introduced.
|
|
| 7. |
|
|
| 8. |
|
|
