The combination of increased amount of“space junk”,lack of precise tracking information and control of items orbiting Earth,and debris from past collisions posed important threats to human space *** this study,a str...
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The combination of increased amount of“space junk”,lack of precise tracking information and control of items orbiting Earth,and debris from past collisions posed important threats to human space *** this study,a strategy enabling“multispacecraft to multidebris”debris removal task is *** analyzing the current distribution of space debris,282 large debris and rocket bodies are selected as target *** traditional-density-based spatial clustering of applications with noise algorithm is innovatively modified by defining the speed increment as threshold parameter for dividing target debris into different ***,the Hungarian-algorithm-based target allocation strategy is used to assign multispacecraft to different debris clusters for the removal *** verify the effectiveness of the proposed“multispacecraft to multidebris”strategy that is able to remove as much as 83.33%of the total 282 target debris.
Accurate prediction of electronic and optical excitations in van der Waals(vdW)materials is a long-standing challenge for density functional *** recent Wannier-localized optimally-tuned screened range-separated hybrid...
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Accurate prediction of electronic and optical excitations in van der Waals(vdW)materials is a long-standing challenge for density functional *** recent Wannier-localized optimally-tuned screened range-separated hybrid(WOT-SRSH)functional has proven successful in non-empirical determination of electronic band gaps and optical absorption spectra for covalent and ionic ***,for vdW materials the tuning of the material-and structure-dependent functional parameters has only been attained ***,we present a non-empirical WOT-SRSH approach applicable to vdW materials,with the optimal functional parameters transferable between monolayer and *** apply this methodology to prototypical vdW materials:black phosphorus,molybdenum disulfide,and hexagonal boron nitride(in the latter case including zero-point renormalization).We show that the WOT-SRSH approach consistently achieves accuracy levels comparable to experiments and many-body perturbation theory(MBPT)calculations for band structures and optical absorption spectra,both on its own and as an optimal starting point for MBPT calculations.
It has been indicated that the path forward for the widespread usage of ferroelectric (FE) materials may be considerably facilitated through the reduction of programming voltages to on-chip logic-compatible values of ...
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Design rationale captures the justification behind a design decision. Often, rationales vary in the content and depth of information, making the study and comparison of rationales challenging. This project aims to cha...
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Seed aging adversely affects agricultural productivity by reducing germination rates and seedling vigor, leading to significant costs for seed banks and companies due to the need for frequent seed renewals. This study...
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The growing need for highly efficient solar cells calls for significant advancements in the development of a new material system to meet the needs of low-cost production. Current multi-junction solar cell alternatives...
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Northern Thailand is home to several Arabica coffee-growing regions, including Mae-kampong, Teentok, Mae-lord, and Monngo Valleys, whose coffees are featured throughout this study. These coffees have distinct aromas a...
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Composite sandwich panels are widely used in aeros pace and civil applications due to their lightweight nature, strength, stiffness, corrosion resistance, and sound insulation properties. However, these panels often l...
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Sandwich panels with cellular cores are increasingly prominent in several industries like marine, aerospace, and automotive, owing to their exceptional stiffness and strength-toweight ratio. Their adaptability is furt...
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