Our team in SYRTE-Observatoire de Paris is currently working on a software prototype for the processing and analysis of the data coming from the microwave link of the ACES (Atomic Clocks Ensemble in Space) mission. The goal of the mission is to realize, in space, a very accurate and highly stable time scale that will be compared to ground clocks. A critical part of this project is the time and ...

In this paper, the optimal numbers of gas and hydrogen stations are examined. Recently, the possibility of gasoline vehicles being replaced with fuel cell vehicles (FCV) is being examined in the coming hydrogen society. The realization of this scenario however needs a large number of hydrogen refueling stations, which hardly exist at the present. We first calculate the optimal number of hydroge...

Transit travelers expend a great deal of time and energy on out-of-vehicle walking and waiting, which significantly affects their perceived burdens of travel. Accordingly, this article is concerned with ways to reduce the perceived burdens of out-of-vehicle time spent walking, waiting, and transferring to improve users’ experience at transit stops and stations. We surveyed 749 transit users at ...

In this paper, the optimal working schemes for wireless sensor networks with multiple base stations and wireless energy transfer devices are proposed. The wireless energy transfer devices also work as data gatherers while charging sensor nodes. The wireless sensor network is firstly divided into sub networks according to the concept of Voronoi diagram. Then, the entire energy replenishing proce...

In January 1996, Tim Duffy, K3LR, chief operator of one of the top-three-ranked multi-multi contest stations, contacted me. Tim asked me to design a series of band-pass filters (BPFs) that he could use between his 150 W transceivers and 1500 W amplifiers. He wanted to reduce the transfer of harmonics and broadband phase noise to the amplifiers. The filters would also make the transceivers, when...

In January 1996, Tim Duffy, K3LR, chief operator of one of the top-three-ranked multi-multi contest stations, contacted me. Tim asked me to design a series of band-pass filters (BPFs) that he could use between his 150 W transceivers and 1500 W amplifiers. He wanted to reduce the transfer of harmonics and broadband phase noise to the amplifiers. The filters would also make the transceivers, when...

The provision of location tracking for mobile agents is designed to deliver a message to a moving object in a network. Most tracking methods exploit relay stations that hold location information to forward messages to a target mobile agent. In this paper, we propose an efficient location tracking method for mobile agents using the domain-based proxy as a relay station. The proxy in each domain ...

Measurements of the underwater polarized light field were performed at different stations, atmospheric conditions, and water compositions using a newly developed hyperspectral and multiangular polarimeter during a recent cruise in the coastal areas of New York Harbor Sandy Hook, NJ region. Angular and spectral variations of the degree of polarization are found to be consistent with theory. Maxi...

High Rate / Low Latency GPS ground measurements for the GPS occultation experiment of the Challenging IV&risatellite Payload (CHAMP) mission are provided by a dedicated global tracking network. The r&work. is being established jointly by GF?Z and Jet Propulsion Latmratory (JPL) to ensure adequate ground d@a auail&iIity for processing of globally distributed GPS qccultadon events. GFZ operates a...