Trump: threats to space science?

The Trump Administration and the Environment - Heed the Science.

Science-based policies and regulations have resulted in tremendous gains in environmental quality and reduced the population’s exposure to harmful pollutants (Fig. 1). In the United States, the gains have been driven by major laws that were passed and amended by Republican and Democratic administrations alike (Table 1). For example, the 1970 Clean Air Act (CAA), signed by President Richard Nixo...

Standing up for science in the era of Trump.

Ionospheric Threats to Space-Based Augmentation System Development

The ionosphere contributes the largest and most unpredictable error to single frequency GPS users’ range measurements. The goal of a Space-Based Augmentation System (SBAS) in mitigating these ionospheric errors is two-fold. First, the SBAS broadcasts error corrections to its users for improved positioning accuracy. Moreover, the SBAS provides a service that GPS alone cannot: ensuring position e...

Cyber Security Threats to Safety-critical, Space-based Infrastructures

Space-based systems play an important role within national critical infrastructures. They are being integrated into advanced air-traffic management applications, rail signalling systems, energy distribution software etc. Unfortunately, the end users of communications, location sensing and timing applications often fail to understand that these infrastructures are vulnerable to a wide range of s...

An Evaluation of Large-Scale Commercial Buildings Architectural Space Indicators with an Approach to Urban Threats and Risks

Abstract: Achieving to technical criteria that by applying them in architectural design stage of large commercial buildings, considered as one of the most important uses in urban planning, can increase the level of citizens’ security against all kinds of natural hazards and threats, and reduce vulnerability and it can provide continuation of the services and activities of these buildings. The p...