Representation of perfectly reconstructed octave decomposition filter banks with set of decimators {2,4,4} via tree structure

In this letter, we prove that a filter bank with set of decimators {2,4,4} achieves perfect reconstruction if and only if it can be represented via a tree structure and each branch of the tree structure achieves perfect reconstruction

Heavy quark photoproduction at THERA

Measurements of heavy quark production at a possible future $ep$ facility, THERA, would provide valuable information on the structure of the photon. QCD cross-section predictions are made at LO for both charm and beauty production and their sensitivity to current parametrisations of the photon parton densities is investigated.Comment: 10 pages, 9 figures. To appear in "The THERA Book", DESY-LC-REV-2001-062. IFT 2001/

Foucault, Levinas and the Ethical Embodied Subject

Zuidervaart, L. [Promotor]Goris, W. [Copromotor

Representations of linear dual rate system via single SISO LTI filter, conventional sampler and block sampler

In this brief, it is proved that a linear dual-rate system can be represented via a series cascade of: 1) a conventional expander, a single-input single-output (SISO) linear time-invariant (LTI) filter and a block decimator, or 2) a block expander, an SISO LTI filter and a conventional decimator. Hence, incompatible nonuniform filter banks could achieve perfect reconstruction via LTI filters, conventional samplers and block samplers without expanding the input-output dimension of a subsystem of linear dual-rate systems or converting the nonuniform filter banks to uniform filter banks. The main advantage of the proposed representations is to avoid complicated design of the circuit layout caused by connecting subsystems with large input-output dimension or a lot of subsystems togethe

Exploring the Use of Virtual Worlds as a Scientific Research Platform: The Meta-Institute for Computational Astrophysics (MICA)

We describe the Meta-Institute for Computational Astrophysics (MICA), the first professional scientific organization based exclusively in virtual worlds (VWs). The goals of MICA are to explore the utility of the emerging VR and VWs technologies for scientific and scholarly work in general, and to facilitate and accelerate their adoption by the scientific research community. MICA itself is an experiment in academic and scientific practices enabled by the immersive VR technologies. We describe the current and planned activities and research directions of MICA, and offer some thoughts as to what the future developments in this arena may be.Comment: 15 pages, to appear in the refereed proceedings of "Facets of Virtual Environments" (FaVE 2009), eds. F. Lehmann-Grube, J. Sablating, et al., ICST Lecture Notes Ser., Berlin: Springer Verlag (2009); version with full resolution color figures is available at http://www.mica-vw.org/wiki/index.php/Publication

A proposed DAQ system for a calorimeter at the International Linear Collider

This note describes R&D to be carried out on the data acquisition system for a calorimeter at the future International Linear Collider. A generic calorimeter and data acquisition system is described. Within this framework modified designs and potential bottlenecks within the current system are described. Solutions leading up to a technical design report will to be carried out within CALICE-UK groups.Comment: 13 pages, 4 figure

Manajemen Sumber Daya Teknologi Informasi Laboratorium Komputer Menggunakan Balanced Scorecard (BSC) Dan COBIT 5

Laboratorium komputer merupakan salah satu sarana pembelajaran yang berbasis Teknologi Informasi (TI) yang terdiri dari tiga sumber daya TI, yaitu software, hardware, dan brainware. Tidak adanya kesesuaian antara kemampuan hardware dengan spesifikasi hardware yang digunakan dapat menghambat pengguna (brainware) dalam melakukan praktikum dan pembelajaran di laboratorium. Selain itu, ketidaksesuaian tersebut juga mengakibatkan software berjalan lambat dan computer sering error sehingga praktikum menjadi terganggu dan berjalan tidak lancar. Untuk mengetahui kesesuaian antar sumber daya TI yang ada di laboratorium dibutuhkan proses pengukuran manajemen sumber daya TI yang ada saat ini. Skala likert menjadi salah satu metode untuk mengukur kinerja software, hardware, dan tata kelola laboratorium saat ini. Hasil pengukuran kemudian dievaluasi menggunakan framework Balance Scorecard (BSC) dengan melalui beberapa tahapan dan penyelarasan strategi TI. Setelah mengetahui hasil evaluasi dan kendala-kendala apa saka yang ada dalam melakukan pengelolaan maka langkah berikutnya adalah menentukan bagaimana cara memperbaiki dan melakukan peningkatan tata kelola TI. COBIT 5 akan menjadi framework pelengkap untuk memperbaiki sekaligus memprediksi pengembangan manajemen sumber daya TI. Hasil penelitian ini menunjukkan bahwa integrase antara COBIT 5 dengan Balance Scorecard (BSC) memberikan kemampuan dalam melakukan pengukuran tata kelola laboratorium serta memberikan kemampuan untuk meningkatkan pelayanan secara kontinyu

Memory, learning and language in autism spectrum disorder

Background and aims: The ‘dual-systems’ model of language acquisition has been used by Ullman and colleagues to explain patterns of strength and weakness in the language of higher-functioning people with autism spectrum disorder (ASD). Specifically, intact declarative/explicit learning is argued to compensate for a deficit in non-declarative/implicit procedural learning, constituting an example of the so-called ‘see-saw’ effect. Ullman and Pullman (2015) extended their argument concerning a see-saw effect on language in ASD to cover other perceived anomalies of behaviour, including impaired acquisition of social skills. The aim of this paper is to present a critique of Ullman and colleagues’ claims, and to propose an alternative model of links between memory systems and language in ASD. Main contribution: We argue that a 4-systems model of learning, in which intact semantic and procedural memory are used to compensate for weaknesses in episodic memory and perceptual learning, can better explain patterns of language ability across the autistic spectrum. We also argue that attempts to generalise the ‘impaired implicit learning/spared declarative learning’ theory to other behaviours in ASD are unsustainable. Conclusions: Clinically significant language impairments in ASD are under-researched, despite their impact on everyday functioning and quality of life. The relative paucity of research findings in this area lays it open to speculative interpretation which may be misleading. Implications: More research is need into links between memory/learning systems and language impairments across the spectrum. Improved understanding should inform therapeutic intervention, and contribute to investigation of the causes of language impairment in ASD with potential implications for prevention