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In the paper presented here, a microstrip-line fed open ended slot antenna is presented which is compact in size. This antenna has an inverted U-shaped stub rested with the help of two horizontal strips from the left and right inner sides of a rectangular slot cut in the ground plane. The dimension of the antenna is reasonably small i.e. (20×22 mm2). This antenna performs at two resonating frequencies...
A slot antenna fed by a microstrip-line and having an open ended vertical stub from the top middle inner side of the square shaped slotted ground plane is presented in this paper. Dimension of this antenna is (30×30 mm2) which is reasonably compact in nature. It has two resonating frequencies at 1.81 GHz and 5.22 GHz, and these two bands are operating for the DCS1800/PCS1900 and wireless LAN application...
In this paper, a printed inverted G-shaped monopole antenna is proposed which is compact in size and fed by a microstrip feed-line, for wireless applications. The dimension of the proposed antenna is (20×20 mm2). It has two resonating frequencies one at 2.41 GHz and the other one at 5.10 GHz, which are operation band for the wireless LAN application. The percentage bandwidths at the two resonance...
We propose a new scheme of dynamic nets-to-TSVs assignment during floorplanning for 3D-ICs. A nontrivial area occupied by TSVs, their physical dimensions, location on the layout and the nets-to-TSVs assignment, are some of the key factors influencing the wirelength, TSV count and chip area, and consequently, impact the total delay. We address the above issues by simultaneous placement of TSV islands...
We propose a new floorplanning approach for TSV-based 3D ICs. A non-negligible area occupied by TSVs, TSVs physical locations and nets-to-TSVs assignment considerably influence chip area, wirelength and delay. TSVs also induce significant thermo-mechanical stress in nearby silicon. The proposed approach addresses the above issues by co-placement of TSVs with circuit blocks, and concurrent nets-to-TSVs...
Conducting graphitic nanowires embedded within a nonconducting matrix can be manufactured using swift heavy ion irradiation of diamond-like carbon or fullerene thin films. A possibility of increase of conductivity of the wires by doping of the films by metal atoms/nanoclusters to make field emitters will be discussed. Work was supported by RFBR (grant 13-02-92709) and by DST of India.
Present work deals with the thermodynamic evaluation of an indirect type natural convection dryer capable of generating an adequate and continuous supply of hot air with temperature in the range of 50–65°C for quality drying of paddy grains. Experiments were performed in batches of 10 kg and 20 kg of paddy, to evaluate moisture reduction rate with a known quantity of fuel (biomass). Average relative...
A theoretical justification has been provided for coincidence of wavelet maxima at a particular scale pair in an event-based pitch detection method. The scale pair to be selected for true pitch estimation in case of multiple scale pairs giving coincidence of wavelet maxima is also indicated, based on this theory. Examples, involving both male and female voice, are provided that demonstrate validity...
Acute lymphoblastic leukemia (ALL) are a group of hematological neoplasia of childhood which is characterized by a large number of lymphoid blasts in the blood stream. ALL makes around 80% of childhood leukemia and it mostly occur in the age group of 3-7. The nonspecific nature of the signs and symptoms of ALL often leads to wrong diagnosis. Diagnostic confusion is also posed due to imitation of similar...
Acute lymphoblastic leukemia (ALL) is the most common hematological neoplasia of childhood and is characterized by uncontrolled growth of leukemic cells in bone marrow, lymphoid organs etc. The nonspecific nature of the signs and symptoms of ALL often leads to wrong diagnosis. Diagnostic confusion is also posed due to imitation of similar signs by other disorders. Careful microscopic examination of...
Acute lymphoblastic leukemia (ALL) is an serious hematological neoplasia of childhood which is characterized by abnormal growth and development of immature white blood cells (lymphoblasts). ALL makes around 80% of childhood leukemia and it mostly occur in the age group of 3-7. The nonspecific nature of the signs and symptoms of ALL often leads to wrong diagnosis. Diagnostic confusion is also posed...
A cute lymphocytic leukemia (ALL) is a malignant disease characterized by the accumulation of lymphoblast in the bone marrow. An improved scheme for ALL detection in blood microscopic images is presented here. In this study features i.e. hausdorff dimension and contour signature are employed to classify a lymphocytic cell in the blood image into normal lymphocyte or lymphoblast (blasts). In addition...
Orthogonal frequency division (OFDM) technologies allow data transmission over band limited channels requires pulse shaping to eliminate or control intesymbol interference (ISI). Nyquist filters provide ISI-free transmission. Here we introduce a new family of modified raised cosine filters is formulated in an effort to reduce the peak-to-average power ratio (PAPR) of the baseband signal over that...
In present work we focus on synthesis and properties of Au-ZnO nanocomposite and demonstrate its applications. Au-ZnO nanocomposites were synthesized by atom beam co-sputtering and sequential annealing. Optical absorption studies revealed the tunable surface plasmon resonance of gold nanoparticles. Annealing beyond eutectic temperature resulted in formation of Au-nanoparticles supported by ZnO nanorods...
In this paper, role of technology in education sector has been highlighted. Using technology in education sector has tremendous impact on social and public life. These aspects have been discussed in the paper with an example of e-Shishu. Based on the framework of action adopted at World Education forum at Dakar (Senegal) in April 2000 to attain six specific goals relating to education for all and...
In this paper, we present techniques for synchronizing nodes that periodically broadcast content and presence updates to co-located nodes over an ad-hoc network, where nodes may exhibit Byzantine malicious behavior. We first propose an algorithm for synchronizing the periodic transmissions of all the nodes in an attacker-free multi-hop network. This allows nodes to save battery power by switching...
Since noise smoothing and image enhancement are conflicting objectives in most image processing application, so it has to be dealt properly to preserve the quality of the image. The perceptual appearance of an image may be significantly improved by modifying the high frequency components to have better edge and detail information in the image. A simple method has been proposed to improve the pitfalls...
Previous work on routing in MANETs has resulted in numerous routing protocols that aim at satisfying constraints such as minimum hop or low energy. Existing routing protocols often fail to discover stable routes between source and sink when route availability is transient, i.e., due to mobile devices switching their network cards into low-power sleep modes whenever no communication is taking place...
In this paper, we present the design and implementation of a cross-layer framework for evaluating power and performance tradeoffs for video streaming to mobile handheld systems. We utilize a distributed middleware layer to perform joint adaptations at all levels of system hierarchy - applications, middleware, OS, network and hardware for optimized performance and energy benefits. Our framework utilizes...
Key establishment in sensor networks is a challenging problem since asymmetric cryptosystems are unsuitable for use in resource constrained sensor nodes, and also because the nodes are vulnerable to physical capture. The key establishment schemes proposed recently in the literature are known to yield higher connectivity and better resilience against node captures if some prior knowledge of deployment...
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