This paper proposes a cryptographic mechanism for metering the duration and/or the number of instances of running a data process. This mechanism has the following property: knowing a secret, one can validate a piece of metering evidence in constant units of time while without the secret the job of generating a valid piece of evidence requires time indicated by a value in the evidence. Because t...

The boiler drum process is a nonlinear, complex and multivariable process which includes significant time delay. Therefore, the control on the water level in the drum is not easy and ideal. The first objective of this paper is to model the drum water level referring to 210 MW power unit for Nassiriyah thermal power plant. The second objective is to study the water level controller operation wit...

Implementing smart metering is an important field for energy policy to successfully meet energy efficiency targets. From an integrated social acceptance and customer perceved vaue theory perspective we model the importance of customer value of smart metering in this regard. ...

Prepayment or pay as you go system is receiving more and more attention worldwide as utilities are looking at ways to improve customer service, improve their cash flow and minimize their risks. The concept of prepaid remains the same but there is going to be a paradigm shift in the application. It's altogether a new arena in Metering India which is likely to be important to revenue and energy m...

A metering scheme allows a correct counting on the number of hits that a Web site received during a certain period. In this paper, we first derive tight lower bounds on the communication complexity |Vi| (i = 1, . . . , n) and the size of server’s secrets |Es| for robust and perfect (k, n)-metering schemes. We next show an almost equivalence between (k, n)-metering schemes and k-multiple-use A-c...

To address the problems of high damage rate, low seeding accuracy, and poor generally in process, a general-purpose device was designed this study based on principle mechanical pneumatic combined seeding. The air-blowing-type cleaning seed unloading laid conditions for precise flexible In addition, single-factor experiments were performed seeds (e.g., soybeans, corn, rape-seeds) with different ...

This paper presents a case study of how factors such as wind prediction errors and metering delays can influence controller performance and workload in Human-In-The-Loop simulations. Retired air traffic controllers worked two arrival sectors adjacent to the Atlanta terminal area. The main tasks were to provide safe air traffic operations and deliver the aircraft to the metering fix within ±25 s...

As the effects of climate change increasingly become a reality, policymakers have recognized the need for more renewable energy, such as wind and solar power, and the benefits of distributed generation. One important way that both renewable energy and distributed generation are being addressed is through the use of electrical net metering policies. Net metering allows property owners to generat...

An experimental study comparing different user interfaces for a virtual drum is reported. Virtual here means that the drum is not a physical object. 16 subjects played the drum on five different interfaces and two metronome patterns trying to match their hits to the metronome clicks. Temporal accuracy of the playing was evaluated. The subjects also rated the interfaces subjectively. The results...