This paper presents two architectures for 2-D discrete wavelet transform (DWT) and inverse DWT (IDWT). The first consists of transform module, RAM module and address sequencer. The transform module, which takes uniform and regular structure with local communication, offers many advantages, e.g. simple control flow, full hardware-utilization and low-power. The second architecture features parall...

A high-speed real-time decoder for t-errorcorrecting binary Bose-Chaudhuri-Hocquenghem (BCH) codes based on a modified step-by-step decoding algorithm is presented. The average operation cycles for decoding each received word is just equal to the block length of the codeword. The decoder is constructed by three modules: the syndrome module, the comparison module, and the error corrector. Since ...

In this paper, we extend stable inversion to nonlinear time-varying systems and study computational issues—the technique is applicable to minimum-phase as well as nonminimum-phase systems. The inversion technique is new, even in the linear time-varying case, and relies on partitioning (the dichotomic split of) the linearized system dynamics into time-varying, stable, and unstable, submanifolds....

In this article, we formalize in Mizar [5] the definition of embedding of lattice and its properties. We formally define an inner product on an embedded module. We also formalize properties of Gram matrix. We formally prove that an inverse of Gram matrix for a rational lattice exists. Lattice of Z-module is necessary for lattice problems, LLL (Lenstra, Lenstra and Lovász) base reduction algorit...

Let m ≥ 2 and r ≥ 1 be integers and let c ∈ Zm = {0, 1, . . . , m− 1}. In this paper, we give an upper bound and a lower bound for the number of unordered solutions x1, . . . , xn ∈ Zm of the congruence x1 + x2 + · · · + xr ≡ c mod m. Exact formulae are also given when m or r is prime. This solution number involves the Catalan number or generalized Catalan number in some special cases. Moreover...

Mantar turizmi ya da mikoturizm son y?llarda geli?im gösteren alternatif bir turizm ürünü olarak kabul görmektedir. Mikoturizm destinasyonu ziyaret eden turistlerin do?a yürüyü?lerini yaparken mantar toplamalar?na ve yerel halk ile etkile?imlerine olanak veren, bölgenin sosyal, kültürel ekonomik anlamda kalk?nmas?na katk? sa?layan etkinliktir. Dünyada co?rafi özellikler bak?m?ndan çe?itlili?i a...

In this paper, we assume that algebras are finite dimensional algebras with 1 over a fixed field k and modules over an algebra are finitely generated left unitary modules. Let A and B be two algebras (where k is a splitting field for A and B) with no semisimple summands. If two bimodules AMB and BNA induce a stable equivalence of Morita type between A and B, and if N⊗A− maps any simple A-module...

This thesis deals with the development of a wireless sensor node for use in orienteering competitions. The nodes are used to transmit runners’ split times from control points, usually located in a forest, to a base station in the finish area. The developed sensor node is optimized for low price and uses a 500 mW radio module to achieve the required range. TinyOS is used as a software platform, ...

A new type of decomposition of graphs – the operator decomposition connected with the classical notion of homogeneous set (or module) is introduced. The properties of this decomposition are described. Using this decomposition we prove the following. Let P and Q be two hereditary graph classes such that P is closed with respect to the operation of join and Q is closed with respect to the operati...

Introduction. It is shown in [4] that there is an infinite family of semifree Zm actions on odd dimensional homotopy spheres. There is also an infinite family of semifree S actions on odd dimensional homotopy spheres (see [2], [5]). On the other hand, it is announced in [2] that there are only finitely many inequivalent semifree S actions on even dimensional homotopy spheres. Hence it is intere...