786 research outputs found
Human Computer Interaction Employing Hand Gestures in Lieu of Mouse Movements
After the advent of computers, we have come to the stage where we can’t imagine a day without interacting with the computers. When the computer interaction is playing such an important role, it would not be wise if we don’t try to enhance the way we interact with the computer. So, the mechanism we propose helps to enhance the way we interact with the computer without any aid from any external device. The proposed system uses the webcam of the computer system to take the hand gestures as input and the cursor responds accordingly. Vision based approach is used for the skin detection. To reduce the effect of illumination on the image, HSV color space is used in the proposed design. The edge detection technique is used for the counter extraction process. Now a bounding rectangle is drawn so as to find the center of the hand. As the center of the hand moves, the cursor moves. To detect the gestures from the hand the fingers are to be recognized. This be done with the help of function like cvConvexityDefects() in openCV. Thus, with the help of two gestures right and left clicks can be preformed
A charge density study of an intramolecular charge-transfer quinoid compound with strong NLO properties
An experimental charge density investigation of 7,7-di[(S)-(+)-2-(methoxymethyl)pyrrolidino]-8,8-dicyanoquinodimethane establishes the presence of a large charge separation as well as a high in-crystal dipole moment compared to the free molecule in frozen geometry, consistent with the high SHG activity of the compound
Growth and characterization of crystals for IR detectors and second harmonic gereration devices
Two types of materials, L-arginine phosphate (LAP) and doped triglycine sulfate (TGS), are examined for their growth characteristics and relevant properties for second harmonic generation and IR detector applications, respectively
Renormalization group study of the Kondo problem at a junction of several Luttinger wires
We study a system consisting of a junction of N quantum wires, where the
junction is characterized by a scalar S-matrix, and an impurity spin is coupled
to the electrons close to the junction. The wires are modeled as weakly
interacting Tomonaga-Luttinger liquids. We derive the renormalization group
equations for the Kondo couplings of the spin to the electronic modes on
different wires, and analyze the renormalization group flows and fixed points
for different values of the initial Kondo couplings and of the junction
S-matrix (such as the decoupled S-matrix and the Griffiths S-matrix). We
generally find that the Kondo couplings flow towards large and
antiferromagnetic values in one of two possible ways. For the Griffiths
S-matrix, we study one of the strong coupling flows by a perturbative expansion
in the inverse of the Kondo coupling; we find that at large distances, the
system approaches the ferromagnetic fixed point of the decoupled S-matrix. For
the decoupled S-matrix with antiferromagnetic Kondo couplings and weak
inter-electron interactions, the flows are to one of two strong coupling fixed
points in which all the channels are strongly coupled to each other through the
impurity spin. But strong inter-electron interactions, with K_\rho < N/(N+2),
stabilize a multi-channel fixed point in which the coupling between different
channels goes to zero. We have also studied the temperature dependence of the
conductance at the decoupled and Griffiths S-matrices.Comment: Revtex4, 16 pages including 6 figure
Accessible Method for Content-Based Image Retrieval In Peer To- Peer Networks
I propose a scalable approach for content-based image retrieval in shared systems by utilizing the sack of-visual words show. Contrasted and brought together conditions, the key test is to proficiently acquire a worldwide codebook, as pictures are conveyed over the entire distributed system. Furthermore, a distributed system frequently develops progressively, which makes a static codebook less successful for recovery assignments. Along these lines, we propose a dynamic codebook refreshing technique by upgrading the common data between the resultant codebook and significance data, and the workload adjust among nodes that oversee distinctive codewords
An Adaptive Namespace Management for Ultra Large Storage Systems
Existing distributed storage frameworks for the most part neglect to offer a sufficient ability for the semantic questions. Since the genuine esteem or worth of information intensely relies upon how proficiently semantic pursuit can be done on the information in (near- ) real-time, vast parts of information wind up with their qualities being lost or essentially diminished because of the information staleness. With a specific end goal to completely assess the framework execution, we actualize all segments and functionalities of FAST in a model framework. The model framework is utilized to assess a utilization instance of close constant information examination of computerized pictures. We gather a major and genuine picture set that comprises of more than 60 million pictures (more than 200 TB storage limit) taken of a best traveler spot amid an occasion. Utilizing this genuine picture dataset as a contextual investigation, we assess the execution of FAST of finding missing youngsters from the picture dataset and contrast it and the cutting edge plans. The contextual investigation assessment exhibits the proficiency and adequacy of FAST in the execution changes and vitality reserve funds
DRIVER CAUTION SYSTEM FOR SAFETY USING SMART LED DISPLAY BOARDS
To prevent accidents and also to alert the motorists concerning the speed limits such type of places the highway department have placed the signboards. Nowadays individuals are driving extremely fast, accidents are occurring frequently, we lost our valuable existence by looking into making small mistake while driving (zone wise, hillsides area, highways). But, May too easy to view that sort of signboards and there's a way for accident. To intimate the motive force concerning the posted speed limit at zones and also to identify crashes instantly, is completed by way of using MEMS, RF, Gps navigation, GSM technology. The primary objective would be to design a good Display controller intended for vehicle’s posted speed limit and crash alerts which could operate on an embedded system. Smart Display & Control (SDC) could be custom-designed to suit right into a vehicle’s dashboard, and displays info on the automobile
Characterization Studies on Lead-Zinc Tailings from Rampura-Agucha Mines
The process tailings of base metal industries contain considerable amounts of acid generating 'pyrite and sul-fides of other minerals. The recovery of sulfide minerals from the tailings not only will have environmental advan-tage but will also result in conservation of mineral wealth.For any such recovery activity, it is essential to characterize the tailings for physical, chemical and mineralogical characteristics. In the present study, typi-cal lead-zinc tailings sample from the operating plant at Rampura-Agucha mines of Hindustan Zinc Limited was collec-ted and characterized for size distribution, size by size chemical composition and mineral phase analysis through X-ray diffraction method. The size-by-size metal contents indicated increasing levels of silver and pyrite with decreasing particle size and the lead and zinc bearing minerals are segregated at relatively coarser size fract-ions. Microscopic studies of the coarser fractions have indicated that the lead and zinc minerals are in unliber-ated form. The XRD study has indicated that quartz is the major mineral phase followed by pyrite, sphalerite, galena and silver. The overall tailings sample was found to cont-ain 19.41% of pyrite, 2.02 % of zinc, 0.69 % lead, and 26.94 ppm of silver contents
MGS Studies for Recovering Iron and Silver Values from Lead-Zinc Tailings
In mineral processing plants valuable minerals are recovered by rejecting gangue materials through various physical processing techniques to produce high-grade concentrate. However, after processing these ores, the tailings generated contain considerable amount of valua-bles because of inefficient of process plant or due to fluctuations in the mineralogical composition of the ore. Therefore, recovery of these valuable minerals is prerequisite from environmental and mineral conservation point of views
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