4,491 research outputs found
Random Matrix Models, Double-Time Painlev\'e Equations, and Wireless Relaying
This paper gives an in-depth study of a multiple-antenna wireless
communication scenario in which a weak signal received at an intermediate relay
station is amplified and then forwarded to the final destination. The key
quantity determining system performance is the statistical properties of the
signal-to-noise ratio (SNR) \gamma\ at the destination. Under certain
assumptions on the encoding structure, recent work has characterized the SNR
distribution through its moment generating function, in terms of a certain
Hankel determinant generated via a deformed Laguerre weight. Here, we employ
two different methods to describe the Hankel determinant. First, we make use of
ladder operators satisfied by orthogonal polynomials to give an exact
characterization in terms of a "double-time" Painlev\'e differential equation,
which reduces to Painlev\'e V under certain limits. Second, we employ Dyson's
Coulomb Fluid method to derive a closed form approximation for the Hankel
determinant. The two characterizations are used to derive closed-form
expressions for the cumulants of \gamma, and to compute performance quantities
of engineering interest.Comment: 72 pages, 6 figures; Minor typos corrected; Two additional lemmas
added in Appendix
Structure and role of neutrophil cytosol factor 1 (NCF1) gene in various diseases
The neutrophil cytosol factor 1 (NCF1) gene consists of 11 exons and is found in two forms; one is wild type gene and the other is pseudogene. It has more than 98% homology. Both genes occupy the same chromosome region. The mutation in this gene leads to various types of diseases such as chronic granulomatous disease, multiple sclerosis, arthritis and parasitic infection. The common mutation of this gene in most diseases is GT deletion at the start of exon 2. The NCF1 gene interact with other subunits of nicotinamide adenine dinucleotide phosphate-oxidase (NADPH) and play an important role in innate immunity and produce reactive oxygen species and reduce the severity and duration of parasitic infection and autoimmune disease. NCF1 also has a role in T cell activation.Keywords: Neutrophil cytosol factor 1 (NCF1) gene, exons, T cell activatio
Budaya Belajar Kelompok Mahasiswa
Ketepatan penggunaan metode pembelajaran oleh dosen memunkinkan mahamahasiswa untuk mencapai tujuan belajar baik dari segi kognitif, afektif, maupun psikomotor. Agar metode pembelajaran yang digunakan oleh dosen tepat, dosen harus memperhatikan beberapa faktor, yaitu tujuan pembelajaran, materi pembelajaran, kemampuan dosen, kondisi mahamahasiswa, sumber dan fasilitas, situasi kondisi dan waktu. Penggunaan metode pembelajarandengan memperhatikan beberapa faktor di atas diharapkan proses pembelajaran dapat berlangsung dengan baik
Classroom Management Information Technology
Development of Information Technology in the field of education today can not be avoided. In the learning process is now not limited to space and time with the presence of information technology. To realize quality of learning, information technology is one aspect of classroom management. Many strategies are offered in classroom management To realize learning objectives. E-learning is a solution in the management of information technology-based classes are much used in various educational institutions. With many advantages, e-learning supports virtual-based learning process
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