72 research outputs found
A Review on Implementation of Real Time Image Processing for a Human Eye Computer Interaction System
People with physical disabilities cannot fully enjoy the benefits provided by computer System .This is because the conventional mouse and keyboard were designed to be used by those who are able bodied. Due to reducing the communication barriers between man and machine human eye computer interaction is important. The main aim of this proposed system is to design and implement a human computer interaction system that tracks the direction of the human gaze. The pupil detection and tracking is an important step for developing a human-computer interaction system. To identify the gaze direction of the user’s eye (right, left, up and down). Human eye uses contactless type devices. This work can develop a human computer interaction system that is based on iris tracking. The iris is widely used as the starting point for detection and tracking. It is an important eye feature that is circular in shape and that can be detected easily
Fetus in fetu in the scrotal sac of newborn
Fetus in fetu (FIF) in the scrotal sac is often overlooked in the differential diagnosis of other scrotal swellings in infants and children. Unlike teratoma, FIF is a benign disorder. Scrotal FIF is extraordinarily rare and has been reported only twice in the international literature. We describe the case of a 15-day-old neonate who presented with scrotal swelling since birth. Radiography and ultrasound revealed a FIF. On surgical removal and pathological evaluation, the anencephalic fetus had limb buds, male external genitals, and vertebral column, supporting the diagnosis of FIF. FIF in the scrotum is a very rare entity. It should be differentiated from other scrotal swellings such as teratoma because of the malignant potential of the latter. Preoperative diagnosis is based on radiologic findings. The treatment is complete excision.Keywords: fetus in fetu, pluripotent cells, scrotal swelling, scrotal teratom
Implementation of Real Time Image Processing for a Human Eye Computer Interaction System
People with physical disabilities cannot fully enjoy the benefits provided by computer System. This is because the conventional mouse and keyboard were designed to be used by those who are able bodied. A number of barriers have stood in the way of the integration of eye tracking into everyday applications, including the intrusiveness, robustness, availability, and price of eye-tracking systems. Due to reducing the communication barriers between man and machine human eye computer interaction is important. The goal of this thesis is to lower these barriers so that eye tracking can be used to enhance current human computer interfaces.The main aim of this proposed system is to design and implement a human computer interaction system that tracks the direction of the human gaze. The pupil detection and tracking is an important step for developing a human-computer interaction system. To identify the gaze direction of the user’s eye (right, left, up and down).This work can develop a human computer interaction system that is based on iris tracking.A novel idea to control computer mouse cursor movement with human eyes it controls mouse-moving by automatically affecting the position where eyesight focuses on, and simulates mouse-click by affecting blinking action
Optimized architecture for SNOW 3G
SNOW 3G is a synchronous, word-oriented stream cipher used by the 3GPP standards as a confidentiality and integrity algorithms. It is used as first set in long term evolution (LTE) and as a second set in universal mobile telecommunications system (UMTS) networks. The cipher uses 128-bit key and 128 bit IV to produce 32-bit ciphertext. The paper presents two techniques for performance enhancement. The first technique uses novel CLA architecture to minimize the propagation delay of the 232 modulo adders. The second technique uses novel architecture for S-box to minimize the chip area. The presented work uses VHDL language for coding. The same is implemented on the FPGA device Virtex xc5vfx100e manufactured by Xilinx. The presented architecture achieved a maximum frequency of 254.9 MHz and throughput of 7.2235 Gbps
Adsorption Study of Cobalt on Treated Granular Activated Carbon
This study is carried out for the removal of cobalt from aqueous solution using granular activated carbon in combination with p-nitro benzoic acid at temperature 25±1 °C. The adsorption isotherm of cobalt on granular activated carbon has been determined and the data fitted reasonably well to the Langmuir and Freundlich isotherm for activated carbon
Integrated SiPh Flex-LIONS Module for All-to-All Optical Interconnects with Bandwidth Steering
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Multi-wavelength Selective Crossbar Switch
Switches are used to connect servers together to form a network in datacenters andin telecommunication. This can be done with electronic switches or optical switches.There has been a tremendous effort in the optics community to miniaturize switches withintegrated photonic technology. Many of these switches are single wavelength switches,i.e they connect two ports with a single wavelength channel. These switches under utilizethe channel bandwidth provided by Wavelength Division Multiplexing.In this thesis, I propose a multi-wavelength selective switch that can dynamicallyassign multiple channels for any connection. Such a switch can help scale data centersand drastically reduce cabling complexity. The theory of the switch is developed andmeasurements of the switch fabricated in a Silicon photonics foundry are reported. Anovel on-chip locking mechanism for the switches is also proposed and demonstrated.We measured an average path loss of 10 dB on Gen III 8x4 switch with a standarddeviation of 2 dB. These losses were reduced by a factor of 4 in Gen IV 4x4 switchwith undoped ring resonators to 2.65 dB with a standard deviation of 1.35 dB. Thetuning range of the rings is twice the Gen III 8x4 switch and the Gen IV 4x4 switchis tunable across 4 channels at 400 GHz spacing. We measured a 10 to 90 % largesignal switching time of 15 s. Multiple input Bit Error Rate measurements showednegligible power penalty due to incoherent crosstalk. Ring resonators are also locked totwo channels spaced at 100 and 200 GHz using an on-chip photodetector in an on-chiplocking experiment
Ultralow Loss Adiabatic Microring Resonator With Thermal Tuning
We report a micro-ring resonator with adiabatic bends, non contact waveguide heaters and small bend radius. The ring has the lowest reported off resonance loss and can support 8 wavelength division multiplexed channels at 200 GHz spacing. We measure 0.49 nm/mW tuning efficiency and 0.085 dB off resonance loss.</jats:p
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