497 research outputs found

    'It is a place, Makom, where each man may be called up': Being and time in Barnett Newman's art

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    Newman’s zips act as a kind of intervention or temporal event that differentiates the canvas, preventing Being from falling into the anonymous and impersonal il y a. The zip is what might be described as ecstatic temporality (ecstatic from the Ancient Greek ek “out” + histanai “to place, cause to stand out”). Time not only gives sense or meaning to Being, it marks the emergence of sensation, the physical materiality of something or someone

    The correlation of science and ethics in Hermann Cohen's philosophy

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    Hermann Cohen made a distinction between the logic of science and the ideal of ethics, and noted that the natural world and the world of ethics are perceived very differently. This is because the order of the physical world is unchangeable (e.g, the sun sets in the west, night follows day, etc), while in the ideal world ethical rules can be accepted or rejected. It seems there should be one explanation for science, which is empirically self-evident, and another for ethics, which is something that is open to debate. Cohen reasoned there must be something that allows science and ethics to coexist and interrelate

    Hermann Cohen and the redemptive potentiality of sin

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    Anticipating Martin Buber, Hermann Cohen said we must recognize the living, breathing individual as a “Thou,” and not just as a generic example of humanity. As significant as the universal ethical ideal is for Cohen, he recognized that ethics is concerned with individuals only insofar as they are members of humanity as a whole. Ethics can’t always deal with individual moral feelings or with sin. In other words, it is religion -- rather than ethics -- that concerns itself with the sin of the individual

    A mixed-methods exploration of an environment for learning computer programming

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    A mixed-methods approach is evaluated for exploring collaborative behaviour, acceptance and progress surrounding an interactive technology for learning computer programming. A review of literature reveals a compelling case for using mixed-methods approaches when evaluating technology-enhanced-learning environments. Here, ethnographic approaches used for the requirements engineering of computing systems are combined with questionnaire-based feedback and skill tests. These are applied to the ‘Ceebot’ animated 3D learning environment. Video analysis with workplace observation allowed detailed inspection of problem solving and tacit behaviours. Questionnaires and knowledge tests provided broad sample coverage with insights into subject understanding and overall response to the learning environment. Although relatively low scores in programming tests seemingly contradicted the perception that Ceebot had enhanced understanding A mixed-methods approach is evaluated for exploring collaborative behaviour, acceptance and progress surrounding an interactive technology for learning computer programming. A review of literature reveals a compelling case for using mixed-methods approaches when evaluating technology-enhanced-learning environments. Here, ethnographic approaches used for the requirements engineering of computing systems are combined with questionnaire-based feedback and skill tests. These are applied to the ‘Ceebot’ animated 3D learning environment. Video analysis with workplace observation allowed detailed inspection of problem solving and tacit behaviours. Questionnaires and knowledge tests provided broad sample coverage with insights into subject understanding and overall response to the learning environment. Although relatively low scores in programming tests seemingly contradicted the perception that Ceebot had enhanced understanding of programming, this perception was nevertheless found to be correlated with greater test performance. Video analysis corroborated findings that the learning environment and Ceebot animations were engaging and encouraged constructive collaborative behaviours. Ethnographic observations clearly captured Ceebot’s value in providing visual cues for problem-solving discussions and for progress through sharing discoveries. Notably, performance in tests was most highly correlated with greater programming practice (p50.01). It was apparent that although students had appropriated technology for collaborative working and benefitted from visual and tacit cues provided by Ceebot, they had not necessarily deeply learned the lessons intended. The key value of the ‘mixed-methods’ approach was that ethnographic observations captured the authenticity of learning behaviours, and thereby strengthened confidence in the interpretation of questionnaire and test findings. of programming, this perception was nevertheless found to be correlated with greater test performance. Video analysis corroborated findings that the learning environment and Ceebot animations were engaging and encouraged constructive collaborative behaviours. Ethnographic observations clearly captured Ceebot’s value in providing visual cues for problem-solving discussions and for progress through sharing discoveries. Notably, performance in tests was most highly correlated with greater programming practice (p50.01). It was apparent that although students had appropriated technology for collaborative working and benefitted from visual and tacit cues provided by Ceebot, they had not necessarily deeply learned the lessons intended. The key value of the ‘mixed-methods’ approach was that ethnographic observations captured the authenticity of learning behaviours, and thereby strengthened confidence in the interpretation of questionnaire and test findings

    The titanium-vanadium system

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    On Big Bang Relics, the Neutrino Mass and the Spectrum of Cosmic Rays

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    It is shown that high-energy features of the cosmic ray spectrum, in particular the kink around 4 PeV and the corresponding change in spectral index, may be explained from interactions between highly energetic cosmic protons and relic Big Bang antineutrinos, if the latter have a rest mass of about 0.4 eV/c2c^2. This explanation is supported by experimental data from extensive air-shower experiments, and in particular by the observation (Fly's Eye) of a second kink around 300 PeV, and by the abrupt change in the chemical composition of the cosmic ray spectrum that occurs at that energy. Both facts follow naturally from our theory, which predicts additional verifiable features of the cosmic ray spectrum in the few-PeV region, e.g. an abrupt decrease in the p/αp/\alpha ratio.Comment: 6 pages, 3 figures, Proceedings of the 6th Topical Seminar on Neutrino and Astroparticle Physics, San Miniato (Italy), 17-21 May 199

    Tree biomass allometry during the early growth of Norway spruce (Picea abies (L.) Karst) varies between pure stands and mixtures with European beech (Fagus sylvatica L.)

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    In this paper we report an investigation of how forest stand mixture may affect biomass allometric relationships in Norway spruce (Picea abies (L.) Karst). Analysis of aboveground biomass data was conducted for 50 trees. Twenty-five sample trees were from a pure Norway spruce stand and the remainder were taken from a mixed stand of Norway spruce with European beech (Fagus sylvatica L.). ANCOVA results demonstrated that individual tree biomass allometry of the pure stand significantly differed from that of the mixed stand. Allometric characteristics depended on the biomass component recorded and the type of biomass predictor used. When predicted by DBH and/or height, the total aboveground biomass of mixed stand trees was significantly less than that for pure stand ones. This ‘apparent’ lower aboveground biomass was attributed to the lower branch and needle biomass proportions of trees growing in mixed stands. The findings indicate that caution should be exercised when applying biomass allometric models developed from pure stands to predict tree biomass in mixed stands (and vice versa), as such data treatment may introduce significant bias

    Judaism, panentheism and Spinoza’s intellectual love of God

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    It is a popular misconception that Spinoza was a pantheist or even an atheist. He was not. Like the medieval Kabbalists, Spinoza was a panentheist

    Multivariate Gradient Analysis for Evaluating and Visualizing a Learning System Platform for Computer Programming

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    This paper explores the application of canonical gradient analysis to evaluate and visualize student performance and acceptance of a learning system platform. The subject of evaluation is a first year BSc module for computer programming. This uses ‘Ceebot’, an animated and immersive game-like development environment. Multivariate ordination approaches are widely used in ecology to explore species distribution along environmental gradients. Environmental factors are represented here by three ‘assessment’ gradients; one for the overall module mark and two independent tests of programming knowledge and skill. Response data included Likert expressions for behavioral, acceptance and opinion traits. Behavioral characteristics (such as attendance, collaboration and independent study) were regarded to be indicative of learning activity. Acceptance and opinion factors (such as perceived enjoyment and effectiveness of Ceebot) were treated as expressions of motivation to engage with the learning environment. Ordination diagrams and summary statistics for canonical analyses suggested that logbook grades (the basis for module assessment) and code understanding were weakly correlated. Thus strong module performance was not a reliable predictor of programming ability. The three assessment indices were correlated with behaviors of independent study and peer collaboration, but were only weakly associated with attendance. Results were useful for informing teaching practice and suggested: (1) realigning assessments to more fully capture code-level skills (important in the workplace); (2) re-evaluating attendance-based elements of module design; and (3) the overall merit of multivariate canonical gradient approaches for evaluating and visualizing the effectiveness of a learning system platform
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