Prior work on black hole (BH) thermodynamics suggests the entropy depends not on the volume, but rather the surface area of the event horizon. Such findings highlight the intriguing nature of BHs and give rise to the idea that information may be entirely encoded on the surface. We study the case of a superficial Schwarzschild BH, and calculate the net force (Fnet) exerted on the surface of its spherical shell from the self-gravitational pull. We demonstrate that the Fnet is exactly c^4/4G, 3.025•10^43 Newtons, a force that is constant and independent of the size and the mass of the BH, meaning all such Schwarzschild BHs share the same Fnet. Surprisingly, the Fnet matches Fmax, the limit of the maximum force conjecture. This establishes a new potential connection between the formation of BHs and the Fmax. We demonstrate that under the validity of this Fmax, the mass of the superficial BH is contained at precisely the Schwarzschild radius. Finally, we provide further evidence to reject the concept of a point mass singularity and we theorize on the creation of a BH given the findings.
Interactive product prototyping has been widely taught in industrial design studio courses to prepare design students in dealing with dynamic interactions of using digital products. While it requires the integration of design and technology, the lack of systematic approaches of the studio curricula creates a great challenge for students who are not familiar with technology in creating interactive prototypes successfully. A theoretical framework is developed from the human-machine interaction model and the sequential flow of task analysis methods. Based on this framework, a human-machine interaction (HMI) flow diagram is proposed with which interaction elements, relationships, and flows are specified and categorized. The flow diagram is utilized to create a storyboard and an allocation flowchart subsequently. A structured design process based on these methods was applied to an interactive product design studio course in an undergraduate industrial design program. Students created working prototypes of interactive products, following the structured design process consisting of an HMI flow diagram, a storyboard, and an allocation flowchart. 104 students (87.4%) among 119 succeeded in translating their ideas to functioning circuits. 74 students (62.2%) successfully integrated electronics components into working physical prototypes while 30 students (25.2%) just made the circuits work. The structured design process makes a transition from initial ideation to programming smooth and incremental. This helps students without previous programming experience to understand the logic flow and to develop algorithms. The HMI flow diagram is useful for analysis, concept development, and the specification of interactions, and helps students to grasp the effect of interactive features on user experience.
Robotic animal-like companions for older adults are promising technologies that have shown to have health benefits, especially for individuals with dementia, and good adoption rates in some previous studies. Our project, Affordable Robotic Intelligence for Elderly Support, aims to design new capabilities for companionship and smart care, but at high affordability. In a 6-month longitudinal study of baseline acceptance and well-being, we assessed the impact of an Ageless Innovation Joy for All™ robotic pet on user acceptance and emotional well-being (depression, loneliness, positive emotions). Nineteen participants from independent and assisted living facilities completed three standardized in-person surveys, each 3 months apart, including the CES-D, measures of Loneliness, Emotions, Attitude towards Technology (ATI), and various measures of evaluation of and engagement with robotic technology. The measures showed modest to very good reliability and meaningful construct validity. Participants in this sample showed little depression or loneliness, and these levels did not further decrease over the six months. People welcomed the pet and expressed positive evaluations of it, and these sentiments were stable over time. Attitudes toward technology varied but were unrelated to well-being measures and to robot evaluations. Our current conclusion, on the basis of a small sample, is that the selected robotic pet companion is appreciated and seen as beneficial, and for adults who are already low in depression and loneliness, the robot companion helps maintain the adult’s emotional well-being but does not further increase it.
Leo Marx, in his famous 1964 book, “The Machine in the Garden,” proposed that a central conflict in the American psyche resulted from the industrialization of the unspoiled, Eden-like landscapes of the new world. Wright’s Organic Modernism perhaps allowed 20th-century Americans to unconsciously feel that they could “resolve" that conflict by living in harmony with nature, while International Style Modernism and its machine-like buildings perhaps pointed too directly to the tragedy of industrial capitalism’s despoiling of the environment.
This is part one of a mini-series attempting to grapple with US grand strategy and the potential need for its re-assessment. The goal of this series is to introduce readers to grand strategy, ideally prompting more to grapple with US grand strategy and grand strategy more broadly. The author is fleshing out their own ideas, so don’t take the work as gospel, but rather as a starting point for your own journey.
In part one, an overview of the current state of US grand strategy is given. In part two, grand strategy is defined as a concept, a more detailed argument for the need of reassessment is put forth, and resources on grand strategy are listed for interested readers. In part three, four typologies of US grand strategic thought are summarized and contrasted with what US grand strategy has arguably been since the end of WWII. In part four, some general thoughts on the means and ends of reassessing US grand strategy will be described. Additional articles on grand strategy may appear over time.
What if the universe has a limit on the amount of energy that a certain mass can have? This article explores this possibility and suggests a theory for the creation and nature of black holes based on an energetic limit.
In the 1960"s and 1970', when most of these unfinished essays were written, I was a free thinking architecture student who perceived a fundamental disconnect within diverse institutions, including Architecture and Education and Money - Banking. I had an intuitive feeling that architecture is more than a visual aesthetic, rather a holistic social experience. The everyday objects with which we interact are an integral part of our social disposition and social wellbeing. The attempt is to develop a method for understanding some previously largely ignored aspects of environmental design – the role of Common Objects as a communication facilitator.- Eric M. Lee