Satellite 2 is an abundant, 330-bp tandemly repeated sequence in the genome of the newt, Notophthalmus viridescens. This sequence is distributed throughout the genome on each of the 11 chromosomes. Both strands of satellite 2 are transcribed on the lampbrush chromosomes during oogenesis, probably as a result of readthrough from upstream structural gene promoters. In addition to these heterogene...

The nucleosomal organization and the protein-binding capability of highly repeated and methylated satellite DNA of cucumber (Cucumis sativus L.), comprising approx. 30% of the genome, were analyzed. Nucleosomal core DNA from satellite type I was prepared after micrococcal nuclease digestion of chromatin and sequenced. Most of the core sequences obtained could be grouped in two main (A and B) an...

This paper describes the network architecture of an Asiawide satellite Internet that considers the situations in developing regions. The design considerations for the architecture are costs, effective use of satellite bandwidth, scalability, and routing strategy when combined with terrestrial links. The architecture includes using one-way shared satellite links to reduce costs, IP multicast to ...

This paper presents securing satellite communications using link level security (such as ATM security) or network level security (such as IPSEC), where both can be applied to military satellite communications. The paper examines the topic of securing very large multicast groups over satellites, where the group size and group dynamics have great impact on networks performance and network security.

Ka band multimedia satellite networks have the potential to bring two-way broadband services directly to the end-user while providing ubiquitous global connectivity with Quality-of-Service (QoS) guarantees. TRW’s satellite network architecture design process involves Demand, Design and Financial modeling. The main Design challenge is to balance the delivery of network services and QoS demanded ...

In the paper various issues in personal satellite communications are addressed. Basic geostationary and non-geostationary satellite constellations are considered. The narrowband and wideband characterization of the mobile satellite channel and related system implications are discussed. Satellite diversity is presented as a measure to overcome signal shadowing. The capacity of TDMA and CDMA mult...

This article presents a new methodology for detecting road network and planning the path for vehicle motion using road map and satellite/aerial images. The method estimates road regions from based on network models, which are created from road maps and satellite images on the basis of using image-processing techniques such color filters, difference of Gaussian, and Radon transform. In the case ...

This paper presents the evaluation performance of a hybrid satellite constellation network which provides internet access based on various Transport Control Protocol (TCP). Given known constraints on the hybrid satellite constellation resulting from network performance evaluation criteria. The evaluated satellite network uses the COMMStellation constellation topology operating on Low Earth Orbi...