Search Results - "Hastings, Daniel"

Reactive Structural Materials: Preparation and Characterization by Hastings, Daniel L., Dreizin, Edward L.

“…Reactive structural materials, which can serve both as structural elements as well as a source of chemical energy released upon initiation have emerged as an…”
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Microspheres with Diverse Material Compositions Can be Prepared by Mechanical Milling by Mursalat, Mehnaz, Hastings, Daniel L., Schoenitz, Mirko, Dreizin, Edward L.

“…This study introduces a novel, simple, and scalable method of preparing spherical particles from a range of materials of potential interest in food,…”
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Defining changeability: Reconciling flexibility, adaptability, scalability, modifiability, and robustness for maintaining system lifecycle value by Ross, Adam M., Rhodes, Donna H., Hastings, Daniel E.

“…Designing and maintaining systems in a dynamic contemporary environment requires a rethinking of how systems provide value to stakeholders over time…”
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High density reactive composite powders by Hastings, Daniel L., Schoenitz, Mirko, Dreizin, Edward L.

“…Materials capable of armor penetration and prompt chemical energy release are desired for future weapon systems in order to better couple the kinetic energy of…”
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When will on-orbit servicing be part of the space enterprise? by Hastings, Daniel E., Putbrese, Benjamin L., La Tour, Paul A.

“…The space industry is currently at a significant inflection point. Over the past decades, many spacecraft at geosynchronous orbit have continued a trend…”
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Drought‐Net rainfall shelters did not cause nondrought effects on photosynthesis for California central coast plants by Loik, Michael E., Lesage, Josephine C., Brown, Timothy M., Hastings, Daniel O.

“…Rainfall interception shelters are frequently used to study the ecological consequences of drought. One common shelter design employs V‐shaped plastic troughs…”
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An economic analysis of disaggregation of space assets: Application to GPS by Hastings, Daniel E., La Tour, Paul A.

“…New ideas, technologies and architectural concepts are emerging with the potential to reshape the space enterprise. One of those new architectural concepts is…”
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Engineering Systems Multiple-Domain Matrix: An organizing framework for modeling large-scale complex systems by Bartolomei, Jason E., Hastings, Daniel E., de Neufville, Richard, Rhodes, Donna H.

“…The scope and complexity of engineered systems are ever‐increasing as burgeoning global markets, unprecedented technological capabilities, rising consumer…”
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Pliability and Viable Systems: Maintaining Value Under Changing Conditions by Mekdeci, Brian, Ross, Adam M., Rhodes, Donna H., Hastings, Daniel E.

“…As systems become more complex and have longer lifespans, they will likely encounter contextual variation or be themselves subject to change. Systems need to…”
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A Logical Approach to Real Options Identification With Application to UAV Systems by Mikaelian, T., Rhodes, D. H., Nightingale, D. J., Hastings, D. E.

“…Complex systems are subject to uncertainties that may lead to suboptimal performance or even catastrophic failure if unmanaged. Uncertainties may be managed…”
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Real Options in Enterprise Architecture: A Holistic Mapping of Mechanisms and Types for Uncertainty Management by Mikaelian, T., Nightingale, D. J., Rhodes, D. H., Hastings, D. E.

“…Uncertainty management is crucial for achieving high performance in enterprises that develop or operate complex engineering systems. This study focuses on…”
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Measuring the Value of Flexibility in Space Systems: A Six-Element Framework by Nilchiani, Roshanak, Hastings, Daniel E.

“…For many engineering systems, flexibility is an important attribute that allows them to adapt to emerging changes. The existence of flexibility can help space…”
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Flexibility in system design and implications for aerospace systems by Saleh, Joseph H, Hastings, Daniel E, Newman, Dava J

“…The purpose of this paper is to review the concept of flexibility as discussed in various fields of investigations, to extract its characteristic features, and…”
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Analysis of proliferated low Earth orbit constellation resilience against solar weather radiation effects by Novak, Jonathan, Hastings, Daniel

“…Proliferated low Earth orbit constellations are becoming more common both in reality and in planning. The resilience of these constellations to the radiation…”
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Titanium-boron reactive composite powders with variable morphology prepared by arrested reactive milling by Hastings, Daniel, Rodriguez, Nikki, McCann, Holly, Schoenitz, Mirko, Dreizin, Edward L.

“…•Spherical and irregular Ti·B and Ti∙2B nanocomposite fuels prepared by milling.•Effect of particle morphology on its structure and reactivity…”
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CubeSats for space debris removal from LEO: Prototype design of a robotic arm-based deorbiter CubeSat by Nagavarapu, Sarat Chandra, Mogan, Laveneishyan B., Chandran, Amal, Hastings, Daniel E.

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Highly reactive spheroidal milled aluminum by Hastings, Daniel, Schoenitz, Mirko, Dreizin, Edward L.

“…Mechanical milling of aluminum powders with two immiscible liquids, acetonitrile and hexane, produced roughly spherical aluminum particles with increased…”
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Weaving time into system architecture: satellite cost per operational day and optimal design lifetime by Saleh, Joseph H., Hastings, Daniel E., Newman, Dava J.

“…An augmented perspective on system architecture is proposed (diachronic) that complements the traditional views on system architecture (synchronic). This paper…”
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Feedstock Powders for Reactive Structural Materials by Hastings, Daniel

“…Metals as fuels have higher energy density per unit mass or volume compared to any hydrocarbon. At the same time, metals are common structural materials…”
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Pulses of Wind and Water in California’s Deserts: An Examination of Precipitation Pulse Dynamics of Photosynthesis in Yucca brevifolia (Englm.) and Dust Storms in the Salton Sea Region by Hastings, Daniel Oren

“…Many ecological phenomena occur in response to pulses. In desert ecosystems, pulses of moisture drive many ecosystem processes, and without this moisture,…”
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