160 research outputs found
Workshop-Projekt: En verden af applikationer: Et erhvervsøkonomisk projekt om projektledelse
No full textWe wish to make a game for Android smartphones, and thereafter market it. The idea is based upon a research of the application market, in which different factors have been put into account. This research has been the foundation of the specific criteria for the game. After specifying our game concept, we have been able to both plan our development of the game as well as plan the following branding. The planning process has been structured by different project management tools, such as Work Break Down Structure, Network and Risk Break Down Structure. These tools has been helpful in explaining which tasks the project involved, the order of these tasks and by identifying the different risks this project could suffer. Project management is a key element in this project and helps structuring the entire project. Finally, we present a budget showing the financial structure of the project.We wish to make a game for Android smartphones, and thereafter market it. The idea is based upon a research of the application market, in which different factors have been put into account. This research has been the foundation of the specific criteria for the game. After specifying our game concept, we have been able to both plan our development of the game as well as plan the following branding. The planning process has been structured by different project management tools, such as Work Break Down Structure, Network and Risk Break Down Structure. These tools has been helpful in explaining which tasks the project involved, the order of these tasks and by identifying the different risks this project could suffer. Project management is a key element in this project and helps structuring the entire project. Finally, we present a budget showing the financial structure of the project
Att kommunicera mångfald : En undersökning om kommunikation och engagemang inom Landsrådet för Sveriges Ungdomsorganisationer
No full textAbstract Title: Communicating diversity – A study about communication and involvement in The National Council of Swedish Youth Organizations. Number of pages: 58 Author: Frida Samuelsson Tutor: Peder Hård af Segerstad Course: Media and Communication Studies C Period: Autumn 2006 University: Division of Media and Communication, Department of Information Science,Uppsala University Purpose/Aim: The general purpose of this essay is to analyse how the member organizations of LSU – The National Council of Swedish Youth Organizations, see the communication,activities and their influence over the organization. I aim to do an analysis of the target group to find out if the lack of involvement in LSU is caused by communication problems. Material/Method: The method of this essay is quantitative and is based upon a web-survey.The chairmen of the member organizations have been asked to answer a survey about the communication in LSU. To get an idea of how widespread different opinions about LSU are the empirical data has been made into graphs to show the frequencies and also cross tabulations to find out if there are any correlations between the variables. Main result: This study has shown that the problem with involvement in LSU is only partly a communication problem. One important result is that many member organizations feel that LSU doesn’t listen to their opinions and they express a wish to have more influence over the organization. The broad target group is both a strength and a weakness to the organization. It is a hard task to communicate in such a differentiated organization, since the members have many views on LSU and have different degrees of involvement. But it is also a strength to be able to create meeting points where different organizations can learn from each other. Keywords: Communication problems, internal communication, involvement, non-profit, organizations, umbrella organization, youth organizations
DANE with OpenSSL : PKIX certificate authentication throughDNS using OpenSSL
No full textBackground X.509 is an ITU standard for a public key infrastructure (PKI), which specifies, among other things, formats for public key certificates, certificate requests, certificate revocation lists and certification path validation algorithm. The X.509 standard was primarily designed to support the X.500 structure. However, today’s use cases centre mostly on the Internet. IETF’s Public-Key Infrastructure (X.509) working group has adapted the standard to the requirements and structure of the Internet. RFC 5280 specifies the PKIX Certificate and CRL Profile of the X.509v3 certificate standard. PKIX certificates are used for validating the identity or identities of the communicating parties, and optionally establishing secure keying material for protection of a message or a communications channel. Authentication and establishment of a secure communications channel on top of TCP with the Transport Layer Security protocol (TLS, RFC 5247) or the Secure Sockets Layer protocol (SSL) is probably the most common application of PKIX on the Internet. The IETF is converging on a standard for integration of X.509 Public Key Infrastructure with DNS and DNSSEC (DANE). In order to reach wide adoption, the concept must be validated through interoperability tests between multiple independent implementations. Results An implementation of the DANE standard has been demonstrated through an extension to the OpenSSL library. All use cases in the DANE standard has been validated to work as documented in the standard. Conclusions The DANE standard is implementable and reaches the results it sets out to achieve
Genome editing in potato via CRISPR-Cas9 ribonucleoprotein delivery
No full textClustered regularly interspaced short palindromic repeats and CRISPR-associated protein-9 (CRISPR-Cas9) can be used as an efficient tool for genome editing in potato (Solanum tuberosum). From both a scientific and a regulatory perspective, it is beneficial if integration of DNA in the potato genome is avoided. We have implemented a DNA-free genome editing method, using delivery of CRISPR-Cas9 ribonucleoproteins (RNPs) to potato protoplasts, by targeting the gene encoding a granule bound starch synthase (GBSS, EC 2.4.1.242). The RNP method was directly implemented using previously developed protoplast isolation, transfection and regeneration protocols without further adjustments. Cas9 protein was preassembled with RNA produced either synthetically or by in vitro transcription. RNP with synthetically produced RNA (cr-RNP) induced mutations, i.e. indels, at a frequency of up to 9%, with all mutated lines being transgene-free. A mutagenesis frequency of 25% of all regenerated shoots was found when using RNP with in vitro transcriptionally produced RNA (IVT–RNP). However, more than 80% of the shoots with confirmed mutations had unintended inserts in the cut site, which was in the same range as when using DNA delivery. The inserts originated both from DNA template remnants from the in vitro transcription, and from chromosomal potato DNA. In 2–3% of the regenerated shoots from the RNP-experiments, mutations were induced in all four alleles resulting in a complete knockout of the GBSS enzyme function.Fil: Andersson, Mariette. Swedish University Of Agricultural Sciences; SueciaFil: Turesson, Helle. Swedish University Of Agricultural Sciences; SueciaFil: Olsson, Niklas. Swedish University Of Agricultural Sciences; SueciaFil: Fält, Ann Sofie. Swedish University Of Agricultural Sciences; SueciaFil: Ohlsson, Pia. Swedish University Of Agricultural Sciences; SueciaFil: Gonzalez, Matías Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Samuelsson, Mathias. Lyckeby Starch AB; SueciaFil: Hofvander, Per. Swedish University Of Agricultural Sciences; Sueci
Preservation of Spatial Information
No full textThis article highlights the importance of preservation of spatial information, i.e. information clearly connected to a geographic position, regardless of whether it is a matter of GIS or CAD/BIM information. The author consider through his review and compilation of texts, interviews and workshops that we have existing tools for appraisal/selection, metadata and preservation formats that with minor additions are fully useful for creating a reliable digital continuum. The future work consists of – appraisal/selection and preservation – of spatial information and is extensive, and therefore the author believes the work should be initiated with immediate effect.
Nonlinear Breit–Wheeler pair production using polarized photons from inverse Compton scattering
No full textObserving multiphoton electron-positron pair production (the nonlinear Breit-Wheeler process) requires high-energy gamma rays to interact with strong electromagnetic fields. In order for these observations to be as precise as possible, the gamma rays would ideally be both mono-energetic and highly polarized. Here we perform Monte Carlo simulations of an experimental configuration that accomplishes this in two stages. First, a multi-GeV electron beam interacts with a moderately intense laser pulse to produce a bright, highly polarized beam of gamma rays by inverse Compton scattering. Second, after removing the primary electrons, these gamma rays collide with another, more intense, laser pulse in order to produce pairs. We show that it is possible to measure the gamma-ray polarization dependence of the nonlinear Breit-Wheeler process in near-term experiments, using a 100 TW class laser and currently available electron beams. Furthermore, it would also be possible to observe harmonic structure and the perturbative-to-nonperturbative transition if such a laser were colocated with a future linear collider
Effect of Desmodium adscendens fraction F1 (DAF1) on tone and agonist-induced contractions of guinea pig airway smooth muscle
No full textPT: J; CR: ADDY ME, 1984, J ETHNOPHARMACOL, V11, P283 ADDY ME, 1986, J ETHNOPHARMACOL, V18, P13 ADDY ME, 1987, PHYTOTHER RES, V1, P1080 BURKA JF, 1985, PROSTAGLANDINS, V29, P529 CONSTANTINE JW, 1965, J PHARM PHARMACOL, V17, P384 LULICH KM, 1979, CLIN EXP PHARM PHYSL, V6, P625 OREHEK J, 1973, NATURE-NEW BIOL, V245, P84 SAAD MH, 1983, CAN J PHYSIOL PHARM, V61, P876 SAMUELSSON B, 1983, SCIENCE, V220, P568 SCHULMAN ES, 1982, J APPL PHYSIOL, V53, P589 STILL WC, 1978, J ORG CHEM, V43, P2923 WASSERMAN MA, 1983, ADV PROSTAGLANDIN TH, V12, P133; NR: 12; TC: 8; J9: PHYTOTHER RES; PG: 6; GA: AX428Source type: Electronic(1
A Design-Oriented Computer Simulation Project for Enabling Reflective Action-Focused Mentoring for Preservice Teachers
No full textIn Sweden, there is a dearth of authentic learning spaces for pre-service teachers to experience maximized variation of disturbances, provocations, and conflicts that are a natural part of teaching. To provoke such situations for practice with real pupils would be ethically problematic, as it would compromise the integrity, mutual respect, and ethic of caring within the teacher-learner relationship. Its pedagogical scope would also be limited, as real-time classroom management do not allow for adequate reflection. Our paper will explore the use of computer simulations as a tool to use during mentorship for pre-service teachers when learning classroom management. We will therefore focus on understanding the personal leadership experiences that pre-service teachers can develop in computer simulators to become confident leaders in their classroom and how this understanding can be integrated into the design process of such simulators. Perspectives: Earlier empirical studies by (Granström & Einarsson, 1998; removed for blind review) documents problematic situations of disturbances, provocations, and conflicts that affect teachers as well as pupils in Swedish schools. Previous work by (Lewis, 2001) reveals that teachers might resort to punishment when conflicts arise, while (Woolfolk & Weinstein, 2006; Lewis, Romi, Katz & Xing, 2008) problematize the falsely perceived effectiveness of punishment. Our project therefore seeks to empower pre-service teachers by grounding their leadership in personal experiences through classroom computer simulations that allow exploration of alternative strategies for classroom management and continuous reflection on their appropriateness. Modes of Inquiry: A phenomenographical analysis, based on stimulated recall interviews, will focus on pre-service teachers’ verbalized descriptions of classroom management decisions taken within the simulator. This explorative form of reflective action-focused mentoring is contrasted with the standard formats as it seeks to understand the appropriateness of using computer simulations to teach classroom management. Data sources: Data from the project Simulerade Provokationer (eng. Simulated Provocations) generated by pre-service teachers from a Swedish university is utilized. This data includes the choices and verbalized reflections that the pre-service teachers made while exploring the simulation. Results: In the simulation the pre-service teachers are forced to take actions, reflect on choices, and change their decisions in an explorative fashion. The hypothesis being that through active participation and continuous self-reflection pre-service teachers will feel better prepared to be the classroom leaders they are expected to be and will carry out a leadership that’s consistent with their desired self-image. Scholarly significance: Numerous Swedish teachers resign in the beginning of their careers as the reality-check hits them of being unprepared for the leadership required of them (Akin-Little & Little, 2008; Colnerud, Karlsson & Szklarski, 2008). Despite the number of academically proposed approaches to classroom management all Swedish pre-service teachers do not successfully manage to apply those approaches as practical knowledge in the classroom. As academics we need to explore new ways of supporting pre-service teachers in learning how to perform classroom management as they after graduation will join a community of practice that is currently unable to support them in that growth.</p
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