The question of unreliability in autobiographical narration

In the year 2001 Kristian Ditlev Jensen, a young Danish journalist and former literary student, published a book by the title Det bliver sagt (“It will be told”). Here he told of the sexual abuses he suffered as a child in a relationship with a pedophile adult friend, called Gustav in the book.The book became a sensation, not only due to its shocking content but also because of its astonishing literary qualities. It has the suspense of a page turner and at the same time it is an analytical intelligent autobiography: it tells the everlasting story of how an individual person on his specific terms is confronted with the world and struggles to find his place in it. It is furthermore a kind of journalist documentary, where the same person is the investigator and part of the story being investigated. How should one read and respond critically to a book of this complex nature

Structure Analysis of the Pohlmeyer-Rehren Lie Algebra and Adaptations of the Hall Algorithm to Non-Free Graded Lie Algebras

The Pohlmeyer-Rehren Lie algebra $\mathfrak{g}$ is an infinite-dimensional $\mathbb{Z}$-graded Lie algebra that was discovered in the context of string quantization in $d$-dimensional spacetime by K. Pohlmeyer and his collaborators and has more recently been reformulated in terms of the Euler-idempotents of the shuffle Hopf algebra. This thesis is divided into two major parts. In the first part, the structure theory of $\mathfrak{g}$ is discussed. $\mathfrak{g}_0$, the stratum of degree zero, is isomorphic to the classical Lie algebra $\mathfrak{so}(d,\mathbb{C})$. Now, each stratum is considered as a $\mathfrak{g}_0$-module, and a formula for the number of irreducible $\mathfrak{g}_0$-modules of each highest weight that occur is given. It is also shown that $\mathfrak{g}$ is not a Kac-Moody algebra. Based on computer-aided calculations, $\mathfrak{g}$ is conjectured to be generated by the strata of degrees $0$ and $1$, but not freely. In an effort to classify the relations, in the second part, the Philip Hall algorithm that iteratively lists (linear) basis elements of a Lie algebra $L(X)$ freely generated by a finite set of generators $X$ is modified. Any non-free finitely generated Lie algebra can be written as $L(X)/I$ with an ideal $I$ encoding the relations. Intended for cases where $I$ is not explicitly known, a variant of the algorithm iteratively lists a basis of $L(X)/I$ and a self-reduced basis of $I$. Further modifications that take advantage of restrictions enforced by a gradation on $L(X)/I$ are also given.2021-06-2

Collaborative writing with web 2.0 technologies: education students' perceptions

Executive Summary Web 2.0 technologies are becoming popular in teaching and learning environments. Among them several online collaborative writing tools, like wikis and blogs, have been integrated into educational settings. Research has been carried out on a wide range of subjects related to wikis, while other, comparable tools like Google Docs and EtherPad remain largely unexplored in the literature. This work presents a case study investigating education students' perceptions of collaborative writing using Google Docs and EtherPad. Both tools provide opportunity for multiple users to work on the same document simultaneously, have a separate space for written metacommunication, and are promoted by software designers to be fairly intuitive to adopt without prior training. The work investigates if perceptions depend on factors such as gender, age, digital competence, interest in digital tools, educational settings, and choice of writing tool, and examines if the tools are easy to use and effective in group work. This paper focuses on quantitative results of survey questionnaires. Further qualitative analysis will be presented in a later paper. The theoretical framework is drawn from two learning theories, the social-constructivist learning theory and the community of practice, and their relationships to collaborative tools. Related re-search literature is characterized by a number of issues: positive elements of use, advantages of using Web 2.0 technologies, critical issues regarding the pedagogical value of Web 2.0, and the role of the teacher in using these technologies. The case study participants were 201 education students who just began their four-year initial teacher education at two study programs with a total of six classes at the university Teacher Education Unit. They were assigned a collaborative writing task and asked to take an on-line survey on completion. When the survey closed, a total of 166 students (83.6%) had participated. The results were analyzed based on frequency distributions. The hypothesis that students with high digital competence and a positive attitude towards digital tools are more positive than average seems to be confirmed. Also gender does not play any particular role. As for younger students being more positive than older, the population of older students was so low that no conclusion can be drawn. The work does not validate that EtherPad users are more positive than Google Docs users, but this may be explained by EtherPad being unavailable for some time during the students' collaborative writing period. Furthermore only 13.9% of the students were motivated to use the tools for collaboration, and only a minority of the students (15.7%) reported that the quality of collaboration in the group increased with use of the tools. Likewise, the tools did not work as expected for a majority of the students (70.5%). Forty-seven percent of the students liked to comment and edit others contributions to group work. Although the results cannot be generalized to a larger group of students, and no definite conclusions can be drawn from the questionnaires about the usefulness and effectiveness of Google Docs and EtherPad for collaborative writing, the results cannot be underestimated since some results are consistent with the research literature. Future research consists of the qualitative evaluation of the students' comments to open ended-questions in the questionnaire, the students' collaborative essay papers, and their contributions to group work. It may also be important to examine the extent and quality of utilization of the tools for collaborative writing. Triangulation of the data collected may shed light on how they really perceived the effectiveness of Google Docs and EtherPad to support collaborative writing among student

Modular Abstract Definitional Interpreters for WebAssembly

Even though static analyses can improve performance and secure programs against vulnerabilities, no static whole-program analyses exist for WebAssembly (Wasm) to date. Part of the reason is that Wasm has many complex language concerns, and it is not obvious how to adopt existing analysis frameworks for these features. This paper explores how abstract definitional interpretation can be used to develop sophisticated analyses for Wasm and other complex languages efficiently. In particular, we show that the semantics of Wasm can be decomposed into 19 language-independent components that abstract different aspects of Wasm. We have written a highly configurable definitional interpreter for full Wasm 1.0 in 1628 LOC against these components. Analysis developers can instantiate this interpreter with different value and effect abstractions to obtain abstract definitional interpreters that compute inter-procedural control and data-flow information. This way, we develop the first whole-program dead code, constant propagation, and taint analyses for Wasm, each in less than 210 LOC. We evaluate our analyses on 1458 Wasm binaries collected by others in the wild. Our implementation is based on a novel framework for definitional abstract interpretation in Scala that eliminates scalability issues of prior work

Wear Behavior of Metal Bonded Grinding Tools When Grinding Ti-6Al-4V in an Oxygen-Free Atmosphere

In the current study, the wear behavior of bronze-bonded grinding tools when grinding the titanium alloy Ti-6Al-4V was explored. In this process, oxidation plays a key role since both the bronze bond and the titanium workpiece chemically react with oxygen. The oxidation effect is intensified further due to increased temperatures during grinding and can cause tribo-oxidation. This wear effect can be reduced or even eliminated by grinding in an extreme high-vacuum (XHV) adequate atmosphere. This atmosphere is nearly oxygen-free and is generated using a silane-doped argon gas that chemically reacts with oxygen. This reaction is able to decrease the oxygen partial pressure (pO2 ≤ 10−12 mbar) down to an XHV-adequate atmosphere. The aim of this paper is to investigate the influence of oxygen in the atmosphere on the application and wear behavior during grinding and to demonstrate the potential of this novel approach. The results presented show that during grinding with cBN, the process forces are significantly influenced by the atmosphere. Depending on the process parameters, a reduction of up to 93% is thus possible. This force reduction correlates with radial tool wear. When grinding under oxygen-free conditions, it can be reduced by up to 64%

Influence of an Oxygen-Free Atmosphere on Process Forces and Workpiece Quality during the Surface Grinding of Ti-6Al-4V

Most manufacturing processes, such as grinding, are usually conducted in a standard air atmosphere. The oxygen within this atmosphere leads to oxidation effects on tools and workpieces when machining metal components. This is primarily a factor in the processing of titanium due to its high affinity for oxygen. The oxidation of the surface increases tool wear and reduces surface quality. Hence, this paper investigates the influence of the atmosphere on process forces and workpiece quality when grinding titanium (Ti6Al4V) with metal-bonded diamond grinding tools. To generate oxygen-free conditions in production processes, a novel approach allows an atmosphere with a very low oxygen partial pressure. Using a silane gas, which reacts with oxygen, the oxygen partial pressure, pO2, can be reduced below 10−12 mbar, equal to the oxygen partial pressure in an extremely high vacuum (XHV). The results show a significant influence of the atmosphere on the process forces. When grinding in XHV-adequate conditions, the grinding forces are reduced by 16% in the tangential direction and 50% in the normal direction on average, while the quality of the ground titanium surfaces is consistent (both atmospheres: Rz = 13–21 µm). Phase analysis via XRD revealed a distinct amount of titanium nitride (TiN) on the ground surfaces independently of the atmospheric conditions

Hvordan blir flinke elever ivaretatt? : er det forskjell på offentlige og private skoler?

Masteroppgave i ledelse- Universitetet i Agder 2010Oppgavens utgangspunkt var problemstillingen: ”Hvordan blir flinke elever ivaretatt? Er der forskjell på private og offentlige skoler?” For å belyse denne problemstillingen valgte vi en kvalitativ tilnærming gjennom intervju av rektorer, kontaktlærere og elever fra de to skoleslagene. Elevene var valgt ut fra resultatene på nasjonale prøver. Graden av ivaretakelse av flinke elever har et individperspektiv og et systemperspektiv. På individnivå vil god ivaretakelse kunne gi flinke elever en positiv utvikling i forhold til både skoleprestasjoner og personlig utvikling. På skolenivå vil fokus på alle elever inkludert de flinkeste være en god utnyttelse av den menneskelige kapitalen. Våre hovedfunn er at private skoler på en mer bevisst måte ivaretar de flinke elevene enn offentlige skoler, men at ingen av skoleslagene ivaretar de flinke elevene tilstrekkelig. Vår studie viser at flinke elever blir ivaretatt ulikt. Det er forskjeller mellom private skoler og offentlige skoler både på systemnivå og individnivå. Ivaretakelse av flinke elever er for mye opp til den enkelte skole og lærer og for lite formalisert

Seksualitetens uddrivelse

The article investigates a historical development in the concepts of happiness and love and the norms of sexual behavior from a rural community over the upcoming welfare society in the suburbs to the late modern period in the big city. The changes are observed through three Danish literary texts from 1960, 1965 and 2011, first the novel I heltespor (“In the footsteps of heroes”) by Erik Aalbæk Jensen, then the short story Julestue (“The Christmas Gathering”) by Anders Bodelsen and finally the novel Se på mig (“Look at me”) by Kirsten Hammann. In the rural community happiness is knowing your right place and mastering the challenges of seduction and sexual temptation without the complete surrender to an inauthentic life of pure conventionalism. In the suburbs and early welfare society controlled infidelity with the exchange of partners represents a promise of happiness, something “more” and meaningful transcending the pure material satisfaction of the new and well managed consumer society. In the late modern period the importance of sexuality and love is downgraded in a remarkable manner: The search for happiness is extremely individualized and conceived as a kind of portal you have to enter at the precise right moment of your life trajectory. Sexuality and love seem to have lost their transcendent and integrational power in the game of happiness