ESTABLISHING SPACE SECURITY: A PRESCRIPTION FOR A RULES-BASED APPROACH

The question of what constitutes the proper military uses of space is not just a debate over space weapons and attacks on satellites. It is a debate that sheds light on the fundamental decisions that states and their citizens will have to make over the next century as we both explore and exploit space for its scientific, strategic, and economic value. Furthermore, the context of this debate changes year to year as the physical and political environment of space changes

Design for Empowerment: Empowering Sri Lankan Farmers through Mobile-based Information System

We developed a mobile-based information system (MBIS) to empower users to improve their livelihood activities. To do so, we first developed an empowerment framework (since one does not exist) as a basis to develop the MBIS. In particular, we conducted this research to solve an agriculture over-production problem in Sri Lanka where farmers remain trapped in a poverty cycle. They cannot make informed decisions due to lack of access to timely, context-based actionable information to achieve a good revenue. We had to generate some essential information such as current production level in real-time by capturing farmers’ decisions such as what and how much to grow. For this purpose, we needed to empower farmers to actively engage them in informed decision-making process through the MBIS. In evaluating the impact of the MBIS, we found a statistically significant positive change in farmers’ empowerment levels based on measuring self-efficacy, sense of control, and motivation before and after they used the application. Commercial organizations have since adopted this mobile-based system in India and Sri Lanka to solve agricultural problems, in universities Africa to mitigate hidden hunger, and the Corporative Research Center in Australia to develop digital health applications to manage chronic diseases, which indicates the approach’s wide adoptability

A Blockchain-Based Trust Management Framework with Verifiable Interactions

There has been tremendous interest in the development of formal trust models and metrics through the use of analytics (e.g., Belief Theory and Bayesian models), logics (e.g., Epistemic and Subjective Logic) and other mathematical models. The choice of trust metric will depend on context, circumstance and user requirements and there is no single best metric for use in all circumstances. Where different users require different trust metrics to be employed the trust score calculations should still be based on all available trust evidence. Trust is normally computed using past experiences but, in practice (especially in centralised systems), the validity and accuracy of these experiences are taken for granted. In this paper, we provide a formal framework and practical blockchain-based implementation that allows independent trust providers to implement different trust metrics in a distributed manner while still allowing all trust providers to base their calculations on a common set of trust evidence. Further, our design allows experiences to be provably linked to interactions without the need for a central authority. This leads to the notion of evidence-based trust with provable interactions. Leveraging blockchain allows the trust providers to offer their services in a competitive manner, charging fees while users are provided with payments for recording experiences. Performance details of the blockchain implementation are provided

Effectiveness of Persona with Personality Traits on Conceptual Design

Conceptual design is an important skill in Software Engineering. Teaching conceptual design that can deliver a useful product is challenging, particularly when access to real users is limited. This study explores the effects of the use of Holistic Personas (i.e. a persona enriched with personality traits) on students' performance in creating conceptual designs. Our results indicate that the students were able to identify the personality traits of personas and their ratings of the personalities match closely with the intended personalities. A majority of the participants stated that their designs were tailored to meet the needs of the given personas' personality traits. Results suggest that the Holistic Personas can help students to take into account personality traits in the conceptual design process. Further studies are warranted to assess the value of incorporating Holistic Personas in conceptual design training for imparting skills of producing in-depth design by taking personalities into account.10 page(s

How to increase ethical awareness in cybersecurity decision-making

Cybersecurity technologies offer secure channels to enable the confidentiality, integrity, and availability of data and services. Human factors; e.g. demographics, personality traits, and human values, which are linked with greater cybersecurity vulnerabilities, have drawn less attention. It is important to understand how to increase ethical awareness for cybersecurity professionals via training. This ethical awareness helps professionals make better moral judgments prior to final decisions and reduces the risk of unexpected human implications. To sensitise players to five cybersecurity ethical principles (beneficence, non-maleficence, justice, autonomy, and explicability), we created a serious game. This game allows players to explore multiple cybersecurity scenarios based on these five cybersecurity ethical principles. Although the analysis does not support the claim that the game increased ethical awareness in general, it did help promote better ethical understanding in some cases where players advanced from providing non-ethical to ethical justifications in a cybersecurity scenario after playing the game

Two Devices for Removing Sludge From Bioreactor Wastewater

Two devices a magnetic separator and a special filter denoted a self-regenerating separator (SRS) have been developed for separating sludge from the stream of wastewater from a bioreactor. These devices were originally intended for use in microgravity, but have also been demonstrated to function in normal Earth gravity. The magnetic separator (see Figure 1) includes a thin-walled nonmagnetic, stainless-steel cylindrical drum that rotates within a cylindrical housing. The wastewater enters the separator through a recirculation inlet, and about 80 percent of the wastewater flow leaves through a recirculation outlet. Inside the drum, a magnet holder positions strong permanent magnets stationary and, except near a recirculation outlet, close to the inner drum surface. To enable magnetic separation, magnetite (a ferromagnetic and magnetically soft iron oxide) powder is mixed into the bioreactor wastewater. The magnetite becomes incorporated into the sludge by condensation, onto the powder particles, of microbe flocks that constitute the sludge. As a result, the magnets inside the drum magnetically attract the sludge onto the outer surface of the drum

Obstacles to the Greening of SMEs

Kleine und mittlere Unternehmen haben bei der Umsetzung von Umweltschutz­maßnahmen mit speziellen Problemen zu kämpfen. Ein EU-Projekt hat in einem Mehr-Länder-Vergleich am Beispiel der Sektoren Möbel, Textilverarbeitung und Nahrungsmittel einige wesentliche Hindernisse identifiziert