A field study was conducted on sandy clay loam soil to evaluate the impact of row spacing and N application method on the productivity of maize (Zea mays L.). The experiment was conducted using four row spacings (60 cm spaced single rows, 90 cm spaced double row strips, 90 cm spaced single rows and 135 cm spaced double row strips) and two methods of nitrogen (N) application (broadcast and band ...

Broadcast authentication is a fundamental security service in distributed sensor networks. A scheme named μTESLA has been proposed for efficient broadcast authentication in such networks. However, μTESLA requires initial distribution of certain information based on unicast between the base station and each sensor node before the actual authentication of broadcast messages. Due to the limited ba...

Motivated by the recent success of Bitcoin we study the question of constructing distributed cryptographic protocols in a fully peer-to-peer scenario under the assumption that the adversary has limited computing power and there is no trusted setup (like PKI, or an unpredictable beacon). We propose a formal model for this scenario and then we construct a broadcast protocol in it. This protocol i...

In this paper, we present the design, collection, transcription and analysis of a Mandarin Chinese Broadcast Collection of over 3000 hours. The data was collected by Hong Kong University of Science and Technology (HKUST) in China on a cable TV and satellite transmission platform established in support of the DARPA Global Autonomous Language Exploitation (GALE) program. The collection includes b...

In broadcast environments, the limited bandwidth of the upstream communication channel from the mobile clients to the server bars the application of conventional concurrency control protocols. In this paper, we propose a new variant of the optimistic concurrency control (OCC) protocol that is suitable for broadcast environments. At the server, forward validation of a transaction is done against...

In the process of designing a new fault tolerant run-time for future exascale systems, we discovered that a total order broadcast would be necessary. That is, nodes of a supercomputer should be able to broadcast messages to other nodes even in the face of failures. All messages should be seen in the same order at all nodes. While this is a well studied problem in distributed systems, few resear...

As technology trends continue to reduce the size, power consumption and cost of embedded networked sensors, they are rapidly approaching the small size and low cost necessary to allow a much wider range of novel usage. The resulting tremendous growth in sensor networks applications predicates increases in both scale and density for their wireless networks. Our initial measurements of an active ...

Data broadcasting has emerged as an efficient way for the dissemination of information over asymmetric wireless environments where the needs of the various users of the data items are usually overlapping. In such environments, data broadcasting stands to be an efficient solution since the broadcast of a single information item is likely to satisfy a possibly large number of users. Communication...

In this paper, we consider the communications involved in the execution of a complex application, deployed on a heterogeneous platform. Such applications extensively use macro-communication schemes, for example to broadcast data items, either to all resources (broadcast) or to a restricted set of targets (multicast). Rather than aiming at minimizing the execution time of a single collective com...

in order to investigate the effect of various rates of phosphorus fertilizer and efficiency amount of broadcasting and banding methods on yield and yield components of corn (zea mays l.), a field experiment were arranged in a split-plot design based on a randomized complete block design with four replications at the research field, ramin agricultural and natural resources university, mollathani...