A Value-Sensitive Design Approach to Intelligent Agents

This chapter proposed a novel design methodology called Value-Sensitive Design and its potential application to the field of artificial intelligence research and design. It discusses the imperatives in adopting a design philosophy that embeds values into the design of artificial agents at the early stages of AI development. Because of the high risk stakes in the unmitigated design of artificial agents, this chapter proposes that even though VSD may turn out to be a less-than-optimal design methodology, it currently provides a framework that has the potential to embed stakeholder values and incorporate current design methods. The reader should begin to take away the importance of a proactive design approach to intelligent agents

Quantum Phase-Slip Junction Under Microwave Irradiation

We consider the dynamics of a quantum phase-slip junction (QPSJ) -- a dual Josephson junction -- connected to a microwave source with frequency $\omega_\textrm{mw}$. With respect to an ordinary Josephson junction, a QPSJ can sustain dual Shapiro steps, consisting of well-defined current plateaus at multiple integers of $e \omega_\textrm{mw} / \pi$ in the current-voltage (I-V) characteristic. The experimental observation of these plateaus has been elusive up to now. We argue that thermal as well as quantum fluctuations can smear the I-V characteristic considerably. In order to understand these effects, we study a current-biased QPSJ under microwave irradiation and connected to an inductive and resistive environment. We find that the effect of these fluctuations are governed by the resistance of the environment and by the ratio of the phase-slip energy and the inductive energy. Our results are of interest for experiments aimed at the observation of dual Shapiro steps in QPSJ devices for the definition of a new quantum current standard.Comment: 12 pages, 9 figures, comments and suggestions would be greatly appreciate

Talking About Task Progress: Towards Integrating Task Planning and Dialog for Assistive Robotic Services

The use of service robots to assist ageing people in their own homes has the potential to allow people to maintain their independence, increasing their health and quality of life. In many assistive applications, robots perform tasks on people’s behalf that they are unable or unwilling to monitor directly. It is important that users be given useful and appropriate information about task progress. People being assisted in homes and other realworld environments are likely be engaged in other activities while they wait for a service, so information should also be presented in an appropriate, nonintrusive manner. This paper presents a human-robot interaction experiment investigatingwhat type of feedback people prefer in verbal updates by a service robot about distributed assistive services. People found feedback about time until task completion more useful than feedback about events in task progress or no feedback. We also discuss future research directions that involve giving non-expert users more input into the task planning process when delays or failures occur that necessitate replanning or modifying goals

Identification of vortexes obstructing the dynamo mechanism in laboratory experiments

The magnetohydrodynamic dynamo effect explains the generation of self-sustained magnetic fields in electrically conducting flows, especially in geo- and astrophysical environments. Yet the details of this mechanism are still unknown, e.g., how and to which extent the geometry, the fluid topology, the forcing mechanism and the turbulence can have a negative effect on this process. We report on numerical simulations carried out in spherical geometry, analyzing the predicted velocity flow with the so-called Singular Value Decomposition, a powerful technique that allows us to precisely identify vortexes in the flow which would be difficult to characterize with conventional spectral methods. We then quantify the contribution of these vortexes to the growth rate of the magnetic energy in the system. We identify an axisymmetric vortex, whose rotational direction changes periodically in time, and whose dynamics are decoupled from those of the large scale background flow, is detrimental for the dynamo effect. A comparison with experiments is carried out, showing that similar dynamics were observed in cylindrical geometry. These previously unexpected eddies, which impede the dynamo effect, offer an explanation for the experimental difficulties in attaining a dynamo in spherical geometry.Comment: 25 pages, 12 figures, submitted to Physics of Fluid

Density determination of tristructural-isotropic nuclear fuel using multiple projection x-ray radiography

Effective methods of enhancing the safety and efficiency of the nuclear power industry embolden its perception and economic viability. Fuel reliability is an essential component of the prosperity of next generation high temperature reactors; as such, an equally dependable quality control method is mandatory. Tristructural-isotropic (TRISO) fuel, the fuel developed for use in these reactors, utilizes density measurement of coating layers as a standard for quality control. Common methods of measuring density, such as sink-float and ceramography are destructive, and as such generate radioactive waste, take a relatively long time to prepare samples, rely on a low sampling rate to be economical, and destroy otherwise usable samples. An alternative method which is non-destructive, quick, robust, and potentially automated has been developed by utilizing typical x-ray radiography. Simulated images and actual radiographs were used to test the method. The simulated results indicated that the method has high tolerance for image noise. Additional tests were performed for voltage fluctuations, errors in the photon energy distribution, and radii measurement perturbations. Experiments were performed with a TRISO fuel phantom and the calculated density results were found to be in agreement with actual values. Implications of the developed testing method include more stringent quality control of fuel at a rapid inspection rate, minimization of fission product release from fuel, and ultimately, increased reactor efficiency --Abstract, page iii

Combining Active Learning Strategies: Performances and Experiences of Grade School Filipino Students

This study combined computer simulation and predict-observe-explain as a new strategy known as Computer Simulation Supported Predict-Observe-Explain (CSSPOE) to explore other ways to facilitate the teaching and learning in physics. This strategy was tested in determining the conceptual understanding and scientific reasoning among grade school Filipino students. A quasi-experimental method was used to gather quantitative data from 38 participants then a case study was used to acquire information from the students. After the CSSPOE intervention, post-test results showed that students had positive conceptual changes, and this increase was significant. The interview data showed that participants pointed out the affordances of CSSPOE, such as visualization, autonomy, recognition of alternative conceptions, and consequently accommodating the scientific notions, and noticing the departure of the strategy from the usual lecture method. The recommendation is to adapt CSSPOE in the K to 12 science curriculum or even in college Physics classes. Physics teachers should strive to utilize constructivist and active learning approaches like CSSPOE

Barriers to Enhancing Disaster Risk Reduction and Community Resilience:Evidence from the L’Aquila Disaster

Building sustainable and resilient societies is a multidimensional challenge that affects achievement of the 2030 Agenda for Sustainable Development. In crises and disasters, civil protection authorities typically use emergency powers and a command-and-control approach to manage resources and to design and implement disaster management interventions. They centralise knowledge, technologies and responsibilities for prevention, mitigation and monitoring, while stifling the capacities of local communities to reduce disaster risks and impacts. The mechanism they enact leads to a poor understanding of the capacities of local people to learn and transform, and of how community wellbeing, vulnerabilities, and resilience influence disaster risks. The mechanism does not strengthen the role of local communities in disaster risk reduction. Instead, it facilitates disaster capitalism at all levels of society. Drawing on the disaster risk reduction and resilience paradigm and on our analysis of the disaster management interventions conducted before and after the 6 April 2009 earthquake in L’Aquila, Italy, we discuss the main constraints to implementing the four Priority Areas in the Sendai Framework for Disaster Risk Reduction: (1) Understanding risk in its multiple dimensions; (2) strengthening disaster risk governance; (3) investing in disaster risk reduction for resilience; and (4) enhancing preparedness and build back better in response, recovery and reconstruction. We discuss how top-down, emergency-centred civil protection approaches create second disasters, and fail in all four priorities. We suggest that shifts in paradigm and investment are required in disaster management and development practice from centralised civil protection systems to decentralised, socially sustainable community empowerment systems

DISCIPLINE-BASED VS. SPIRAL LEARNING APPROACH TO SCIENCE EDUCATION: A CRITICAL ANALYSIS IN THE PHILIPPINE SETTING

The Philippines started the K to 12 curricula and spiral progression approach in 2012 turning back from the discipline-based curriculum. Many educators and researchers that it is a must to transfer to the spiral progression approach. This paper examined and evaluated both approaches based on various literature in the context of the Philippines since many people have appealed to go back to the old system. There is overwhelming literature that suggests the benefits of the spiral progression approach in terms of the academic achievement of students and mastery of learning. There was much literature also saying that there is a wide-ranging need for improvement in this spiral progression and K to 12 curricula as a whole. Being said, the country should overhaul the system but not abolish it. There are more benefits than harm in the spiral progression and K to 12 systems.     

Tracking the Acceleration Due to Gravity and Damping of a Pendulum: A Video Analysis

This study focused on using video analysis to track the acceleration due to gravity and damping of a pendulum. The video tracker analysis software was proven effective in collecting data from several physics experiments. This study offered new insights on using a tracker and combining it with MS Excel to generate a damping graph. A pendulum was set in motion and recorded with a high-speed camera from the iPhone 13. The footage was then analyzed using tracker video analysis, modeling software, and Microsoft Excel to determine the amplitude and frequency of the pendulum's motion. At the same time, the other variables were measured using traditional tools (e.g., the length of the yarn using a meter ruler). The measured values were then used to calculate the acceleration due to gravity and the damping constant of the system. The results showed that the acceleration due to gravity was consistent with the average accepted value, while the damping constant accurately represented what was seen from the generated graph. Overall, this study demonstrated the effectiveness of video analysis in tracking the behavior of physical systems and its potential applications in various fields