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This paper presents the generation of optical carrier suppressed signal for RoF system. RoF refers to an analog transmission over fiber technology where light is modulated by radio frequency (RF) signal and transmitted over an optical fiber link to wireless access. Both optical carrier suppression and signal modulation are made by using a Dual-Drive Mach-Zehnder modulator (DD-MZM). Suppressed carrier modulation is achieved by biasing at the null point of DD-MZM. Optical carrier suppression improves the performance of RoF system such as link gain and noise figure (NF).In this research, a single RF at 2100 MHz having data rate of a 1 Gbps modulates the 1550.12 nm optical carrier in the DD-MZM. In this paper, the carrier suppression and performances of RoF system are investigated by theory and simulation. The various values of optical carrier suppression ratio can be obtained by adjusting the extinction ratio of the DD-MZM.
Ganga river originating from Gangotri in Himalayas has got very strategic location from water resource point of view. It receives water in three different seasons first from July to October called monsoon season, second from April to June called snow-melt season and third occurs occasionally in January, February, March where the scanty rainfall occurs due to western disturbances. It is occupied by number of watersheds which are generally active in monsoon season.
Vehicle Sensor Networks (VSN) are emerging as a new tool for effectively monitoring the physical world, especially in urban areas where a high concentration of vehicles equipped with on board sensors is expected.A vehicle tracking system combines the installation of an electronic device in a vehicle, or fleet of vehicles, with purpose-designed computer software at least at one operational base to enable the owner or a third party to track the vehicle’s location, collecting data in the process from the field and deliver it to the base of operation.
Regional Rural Banks are the banking financial intermediaries working especially for the development of rural sector of Indian economy. The main aim of establishing these institutions was to facilitate the rural people with core banking functions in general and loaning to those landless and marginal farmers, artisans, field workers etc.who could not access to other sources of organised financial system
Fruit rot of brinjal caused by Phomopsis vexans is an important disease of eggplant inflicting heavy losses. The present investigation was carried out to test the efficacy of fungicides and two species of Trichoderma inhibiting the pathogen in vitro. Fungicides viz. Carbendazim (Bavistin 50% wp), Captaf (Captan-50 wp), Copperoxychloride (Blitox -50wp), Mancozeb (Dithane-75) and Ridomil MZ -72 were tested by poisoned food technique against brinjal fruit pathogen (Phomopsis vexans) in PDA medium. All the fungicides were significantly proved effective. Among them, Carbendazim at 0.1% showed complete inhibition of the mycelial growth of the pathogen. Among the two species of Trichoderma tested, T. viride was found to be most effective with 84% inhibition followed by T.harzianum 78.22 % inhibition respectively over control after 7 th days of incubation
Inventory management is used to make decisions regarding the appropriate level of inventory. In practice, all inventories cannot be controlled with equal attention. In this paper the inventory level is decided based on part demand, cost, and supplier location, Share of business and status of receipt. Using ABC analysis the various parts are classified into A, B and C based on its cost. A suitable bin with its rack has to be selected based on the size of the part. Stores layout is designed based on the ABC classification, Bin selection and rack design with the available space constraint. The existing kanban system has to be modified into supplier e-kanban system by which the speed of information sharing between suppliers will be improved.
Clinical Decision Support System (CDSS) is a tool which helps doctors to make better and uniform decisions. There are many existing systems present which are used for diagnosing the diseases. For different types of diseases the existing CDSS systems changes with different algorithmic approaches. Every approach has its pros and cons. Selecting the positive aspect and overcoming the problems is the main motive.
Managers need relevant and reliable information just in time in order to make appropriate decisions to achieve organizational goals and objectives. Financial information is one of the most important types of information. Thus sound Accounting Information System (AIS) is crucial to the firms. This study tries to find out factors affecting AIS effectiveness which is a prerequisite to improvements on organizational performance. The paper examines relationship between AIS effectiveness and Managerial Knowledge, Use of External and Internal Consultant as well as Firm's Size.
In this paper a new scheme is proposed for progressive image transmission over coded Orthogonal Frequency Division Multiplexing (OFDM) system with Low Density Parity Check Coding (LDPC). Trigonometric transforms are used in this scheme for improving the performance of the OFDM systems and reducing the PeakTo- Average Power Ratio (PAPR) of OFDM signal. It improves the error resilience ability and transmission efficiency for progressive image transmission over Additive White Gaussian Noise (A WGN) channel. The Set Partitioning In Hierarchical Trees (SPIHT) algorithm is used for source coding of the images to be transmitted. In the proposed scheme the transmit data sequence of the OFDM signal after Inverse Fast Fourier Transform (lFFT) is grouped into in-phase and in-quadrature components, then each component is transformed using either the Discrete Cosine Transform (DCT) or the Discrete Sine Transform (DST). The simulation results show that adding the DST to the system im
The efficiency of Parthenium hysterophorus L., as potential feed stock was investigated by using different pretreatment methods. P.hysterophorus L., being declared invasive weed, is an obnoxious flowering plant which is a big challenge to all attempts of control. Although several eradication measures have been undertaken in this regard for many years, not a single method is yet an option for the total eradication of Parthenium.Thus, the status of Parthenium management is visualized with respect to large-scale utilization. Therefore, in the present work, Parthenium is chosen to comparatively analyze its efficiency as a potential feed stock.