VOLUME 1, ISSUE 4, DECEMBER 2014

Abstract: Arduino Uno, DHT11 sensor, USB type B cable, adaptor, DC power jack, 9-V battery connector, 9-V DC battery, resistor, liquid-crystal display (LCD) screen, trimmer potentiometer, light-emitting diode (LED) bulbs, jumper wires, micro secure digital (SD) card module, printed circuit board (PCB), and other components were used to create the temperature and humidity monitoring system. The developed temperature and humidity monitoring system was field tested at various locations on the college campus. The developed system had a temperature accuracy of 2°C and a humidity accuracy of 4%. The total cost of developing a temperature and humidity monitoring system, including all accessories, was $1625.

Keywords: Arduino Uno microcontroller; DHT22 sensor; Humidity; RF 433 hc12; Temperature

Abstract: In the design of Digital Integrated Circuits area occupancy, delay and power play an important role because of the increasing necessity of portable and fast systems. Adders are one of the most widely used digital components in various Digital Circuits. Carry Select Adder (CSLA) is one of the fastest adders used in many processors, multipliers, and different applications. Carry select method is having a good compromise between cost and performance in carry propagation method. In this paper a modified area and low power carry select adder along with lower delay is proposed. The proposed system has low area and power consumption with lower delay suitable for FPGA design than the existing carry select adders. Due to the optimized area, power and delay, the proposed CSLA design is a good substitution for all the existing CSLA. The proposed architecture is designed using VHDL and is then synthesized using XILINX 13.2i and is simulated in ISim for Spartan 3E FPGA.

Keywords: carry select adder, area efficient, delay efficient, low power adder

Abstract: Recently, more and more attention is paid to reversible data hiding (RDH) in encrypted images, since it maintains the excellent property that the original cover can be losslessly recovered after embedded data is extracted while protecting the image content’s confidentiality. All previous methods embed data by reversibly vacating room from the encrypted images, which may be subject to some errors on data extraction and/or image restoration. In this paper, we propose a novel method by reserving room before encryption with a traditional RDH algorithm, and thus it is easy for the data hider to reversibly embed data in the encrypted image. The proposed method can achieve real reversibility, that is, data extraction and image recovery are free of any error. Experiments show that this novel method can embed more than 10 times as large payloads for the same image quality as the previous methods, such as for PSNR dB.

Keywords: Reversible data hiding, image encryption, privacy protection, histogram shift.

Abstract: This Paper deals with the Evaluation, Analysis and Algorithm of Context Adaptive Binary Arithmetic coding (CABAC) MPEG-4 Video Codec.MPEG-4 is an ISO/IEC video coding standard which supports highly interactive multimedia applications as well as traditional applications. It includes many advanced functionalities such as interactivities, scalabilities and error resilience. The growing popularity of MPEG-4 in the field of animation and interactive movies was the main motivation to include it in this work. This paper investigates the effect of CABAC Entropy coding scheme that is a crucial parameter for the performance of MPEG-4 video coder. In this paper Algorithm for Context Adaptive Binary Arithmetic coding (CABAC) is proposed for MPEG-4 Video Codec. The compression efficiency of CABAC is 8-12% better as compared to CAVLC and it can be up to 30% better when compared to other entropy compression methods.

Keywords: CABAC, Entropy Coding, PSNR, QCIF and SSIM.

Abstract: Ground water and surface water belong to the same hydrologic cycle and are inter-dependent. It is appropriate to consider these two sources together to work out the total water resources. The fact is that groundwater and surface water typically are in hydraulic continuity forming parts of a single system. There is thus growing awareness about the simultaneous development of surface water and groundwater, need to manage aquifer and the necessity for artificial recharge. Joint operation of the surface water and ground water system would require systematic management on basin and watershed levels. This in turn requires an understanding of the ground water system, its responses to the stresses imposed upon it and an understanding of the water resource utilization. The primary requirement in the simultaneous development of the surface and groundwater management is the inventory of water and land resources. This is prerequisite for quantitative and qualitative assessment of both the ground water and surface water resource development. Long time mean annual rate of recharge limits the potential ground water resource. It is important to appreciate the interrelated and independent nature of surface and ground water. Spatial analyses including interpolation techniques have potential for monitoring and representation of groundwater resource in any area.

Keywords: Holistic approach, water management, water resources.

Abstract: This paper is an effort to put forth a cumulative presentation of the research being carried out on Surface Mechanical Attrition Treatment (SMAT). SMAT is in some ways similar to Shot-Penning, but differs from it in Ball Size and also the angle of attack. Ball sizes in Shot-penning is in the range of 200μm-1mm, whereas in SMAT it varies from 300μm-10mm[1] so the ball size is greater in SMAT and the angle of attack or impact in Shot-Penning is 90˚, but in SMAT the balls impact the specimen at random angles. This paper will discuss all the research that has been carried out on SMAT, like the effect of it on hardness, corrosion, phase transformation, etc. It was observed that Corrosion resistance depleted after SMAT, and the hardness of the treated surface increased but gradually decreased with increasing depth from the treated surface, the significant observation is the reduction in the grain size from a few μm to nm. The outcome of all the research work has been explained in detail in this paper.

Keywords: Surface Mechanical Attrition Treatment (SMAT), Nancrystalization, Potentiodynamic Polarization, Phase Transformation.

Abstract: Studies on the oscillator strength as Judd-Oflet parameters (1,2) were carried out for some f-f transitions specially on Hypersensitive or pseudoquadorpolar transitions for Pr (III) complexes with N and O containing ligands(viz:2-Hydroxyquinoline,8-Hydroxyquinoline, and 8-Aminoquinoline) in organic (Et-OH) as well as micellar medium as a doped system. The oscillator strength was calculated by Judd-Of let method. The variation in oscillator strength (Pobsx106) as well as in Judd-Ofelt Parameter T2 x109 was reported as solvent changed.

Keywords: Pr (III), Quinoline Derivatives, oscillator strength and TET

Abstract: An experimental investigation of the effect of geometrical parameters of circular transverse ribs on heat transfer of rectangular duct with heated plate having rib roughness on its underside have been reported. The range of parameters for this study has been decided on the basis of practical considerations of the system and operating conditions of solar air heaters. The experimental investigation encompassed the Reynolds number (Re) range from 2564 to 6206; relative roughness pitch (P/e) of 8, angle of attack (α) of 90° and relative roughness height (e/Dh) is 0.047. The thermal efficiency of roughened duct is observed to be 5%-9% more as compare to the smooth duct. The thermal efficiency is increased with increasing the value of Reynolds number.

Keywords: Solar air heaters, heat transfer, thermal efficiency, Reynolds number.