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Preprint REVIEW | doi:10.20944/preprints202310.0921.v1

Recent Advances in Space Debris Removal Techniques; A study

Ayan Deghuria, Richeek Debnath, Varsha G, Khushi Raheja

Subject: Engineering, Aerospace Engineering Keywords: Space Debris

Online: 16 October 2023 (09:03:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1011.v1

Open-Source Database for Modeling Cislunar Debris Propagation

Marta Lopez Castro, Zachariah Hudson, David Canales

Subject: Engineering, Aerospace Engineering Keywords: spacecraft fragmentation; Cislunar region; Debris; CR3BP; space situational awareness

Online: 14 June 2024 (14:06:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1802.v1

Can the Orbital Debris Disease Be Cured Using Lasers?

Stefan Scharring, Jürgen Kästel

Subject: Engineering, Aerospace Engineering Keywords: Space debris; Space sustainability; Kessler syndrome; Debris removal; High energy lasers; Laser pulse repetition rate; Laser ablation; Laser momentum transfer; Laser-induced heating; Thermo-mechanical integrity

Online: 25 May 2023 (10:46:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202410.0482.v1

Simulating Space Debris Removal Maneuvers: A Multi-Orbit Approach for Active Debris Clearance in LEO and GEO

Rusheel Sai Nuthalapati

Subject: Engineering, Aerospace Engineering Keywords: Space debris removal; detumbling; nanosatellite; adaptive sliding mode control; PWPF modulation; harpoon system

Online: 8 October 2024 (03:12:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201612.0144.v1

Temporal Changes of Per Capita Green Space of Colombo District, Sri Lanka

Lin Li, Pgrni Pussella

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Green Space; NDVI; Per Capita; Urbanization

Online: 29 December 2016 (16:04:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1465.v1

A Strategic Approach to the Identification and Durable Valuation of Endogenous Resources in the Mountainous Region of Romania

Romulus Iagaru, Anca Sipos, Pompilica Iagaru

Subject: Environmental And Earth Sciences, Environmental Science Keywords: strategical approach; durable development; rural economy; strategic options; rural space

Online: 26 February 2024 (14:07:58 CET)

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Preprint REVIEW | doi:10.20944/preprints202310.0930.v1

Revolutionizing Space Exploration and Colonization: A Deep Dive Into How Recent Developments in Robotics and Autonomous Systems Are Changing the Game

Abdullah Ibnah Hasan

Subject: Computer Science And Mathematics, Robotics Keywords: robotics; space colonization; deep space missions; space exploration; space technology; planetary surface exploration

Online: 16 October 2023 (08:42:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0141.v1

Navigating Uncertainty in High-Frequency Trading: A DIKWP Model Approach to Compliance and Strategy under the Financial Regulation

Kunguang Wu, Yucong Duan

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: DIKWP model; uncertainty analysis; concept space; cognitive space; semantic space

Online: 2 April 2024 (07:21:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.2120.v1

Assessing the Appropriation of Space in Urban Green Spaces Before the COVID-19 Pandemic: Three Case Studies in Downtown Shanghai

Marcus Vinicius Sant’Anna, Wuzhong Zhou

Subject: Social Sciences, Urban Studies And Planning Keywords: use of space; appropriation of space; behavior mapping; urban green space

Online: 26 September 2024 (14:48:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1798.v1

Design and Operation of a Gripper for a Berthing Task

Alexander Titov, Matteo Russo, Marco Ceccarelli

Subject: Engineering, Aerospace Engineering Keywords: Space Robotics; On-Orbit Service Robotics; Space Berthing; Space Grippers; CubeSats

Online: 25 May 2023 (10:29:58 CEST)

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Working Paper ARTICLE

Dirac Oscillator in Dynamical Noncommutative Space

Ilyas Haouam

Subject: Physical Sciences, Mathematical Physics Keywords: Dynamical noncommutative space; τ -space; position-dependent noncommutativity; noncommutative space; Dirac oscillator

Online: 23 June 2021 (13:22:27 CEST)

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In this paper, we address the energy eigenvalues of two-dimensional Dirac oscillator perturbed by dynamical noncommutative space. We derived the relativistic Hamiltonian of Dirac oscillator in dynamical noncommutative space (

τ

-space), in which the space-space Heisenberg–like commutation relations and noncommutative parameter are position-dependent. Then used this Hamiltonian to calculate the first-order correction to the eigenvalues and eigenvectors, based on the second quantization and using the perturbation theory. It is shown that the energy shift depends on the dynamical noncommutative parameter

τ

. Knowing that with a set of two-dimensional Bopp-shift transformation, we mapped the noncommutative problem to the standard commutative one.

Preprint ARTICLE | doi:10.20944/preprints202401.0389.v1

Functional Kuppinger-Durisi-Bölcskei Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle, Hilbert space, ; Banach space.

Online: 4 January 2024 (15:15:01 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints202306.0655.v1

The Concept of Freedom in Bakunin's Anarchist Thought and Its Relevance in the Context of Future Space Travel and Exploration

Luca Tonietti

Subject: Physical Sciences, Space Science Keywords: Bakunin; Anarchism; Space Exploration; Freedom; Space Travel

Online: 9 June 2023 (10:55:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0162.v1

Discreteness of Space from Anisotropic Spin-Orbit Interaction

Barun Majumder, Ahmed Farag Ali

Subject: Physical Sciences, Mathematical Physics Keywords: space quantization; Planck length; discreteness of space

Online: 5 February 2021 (13:52:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints201708.0077.v1

Modeling of the Stepping Process of Negative Lightning Stepped Leaders

Vernon Cooray, Liliana Arevalo

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Lightning; Stepped leader; Space leader; Space stem

Online: 22 August 2017 (17:28:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.2224.v1

Nonlinear Maccone-Pati Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: ; Uncertainty Principle, Lebesgue space, Clarkson inequality, Parallelogram space, Type of Banach space.

Online: 31 January 2024 (12:28:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0197.v9

Space Theory

S. Chen

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: space; gravitation

Online: 26 March 2024 (14:12:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202307.0025.v1

Functional Donoho-Stark Approximate Support Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Orthonormal Basis; Hilbert space; Banach space

Online: 4 July 2023 (02:15:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0116.v1

Functional Ghobber-Jaming Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Orthonormal Basis; Hilbert space; Banach space

Online: 2 June 2023 (03:24:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202211.0073.v1

Esakia Duality for Heyting Small Spaces

Artur Piękosz

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: Esakia duality; small space; spectral space; Heyting algebra

Online: 3 November 2022 (08:39:44 CET)

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Working Paper ARTICLE

Conformal and Geodesic Mappings onto Some Special Spaces

Volodymyr Berezovski, Yevhen Cherevko, Lenka Rýparová

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: space with affine connection; Riemannian space; Ricci-m-symmetric space; conformal mapping; geodesic mapping

Online: 24 June 2019 (08:51:49 CEST)

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Preprint REVIEW | doi:10.20944/preprints202011.0724.v1

Pharmaceutical Solutions for Deep Space Travel and Colonization: Background, Challenges, and Possibilities

James Jabara

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: astronaut health; space medicine; pharmaceutical stability; space pharmacy; radioprotection; Mars missions; space exploration and colonization.

Online: 30 November 2020 (12:00:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0322.v1

Estimating the Inertia Tensor Components of an Asymmetrical Spacecraft When Removing It from the Operational Orbit at the End of Its Active Life

Andry Sedelnikov, Denis Orlov, Maria Bratkova, Ekaterina Khnyryova

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: Estimating the inertia tensor; space debris; magnetometer; space tug

Online: 6 November 2023 (07:57:07 CET)

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Preprint REVIEW | doi:10.20944/preprints201910.0005.v1

Water and Microbial Monitoring Technologies towards the Near Future Space Exploration

Stefano Amalfitano, Caterina Levantesi, Diego Copetti , Fabrizio Stefani, Ilaria Locantore, Vincenzo Guranieri, Cesare Lobascio, Francesca Bersani, Donatella Giacosa, Emmanouil Detsis, Simona Rossetti

Subject: Environmental And Earth Sciences, Space And Planetary Science Keywords: International Space Station; space missions; biomonitoring; water biological contamination

Online: 1 October 2019 (16:16:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0605.v1

Inconsistency of Time-symmetry Model

Srečko Šorli, Štefan Čelan

Subject: Physical Sciences, Acoustics Keywords: time; space; symmetry

Online: 27 July 2021 (13:39:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.0886.v1

Re-examination of Penrose’s Space-Time Singularity and the Origin of Protons in Astrophysical Jets

Srecko Šorli

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: space-time singularity, astrophysical jets, energy density of superfluid space

Online: 12 December 2023 (11:21:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.0486.v1

Optical Design of a Miniaturised Solar Magnetograph for Space Applications

Ariadna Calcines, Lucie M. Green, Alan Smith, David M. Long

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: solar magnetograph; space weather; space sciences; solar instrumentation; miniaturised optics

Online: 9 October 2023 (11:10:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1084.v1

Functional Deutsch Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: uncertainty principle; orthonormal basis; parseval frame; hilbert space; banach space

Online: 17 July 2023 (10:53:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0171.v1

Heyting Locally Small Spaces and Esakia Duality

Artur Piękosz

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: tame topology; Esakia duality; locally small space; up-spectral space

Online: 2 June 2023 (09:40:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0060.v1

Functional Donoho-Stark-Elad-Bruckstein-Ricaud-Torresani Uncertainty Principle

K. Mahesh Krishna

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Orthonormal Basis; Parseval Frame; Hilbert space; Banach space

Online: 5 April 2023 (11:50:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0365.v1

GN-Operators

Reza Ahmadi, Gholamreza Rahimlou

Subject: Computer Science And Mathematics, Analysis Keywords: Hilbert space; Lebesgue integral; trace class operator; frame; measure space

Online: 27 June 2022 (11:07:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202111.0559.v1

Relativity of Energy

Alireza Jamali

Subject: Physical Sciences, Theoretical Physics Keywords: minimum gravitational potential; Mercury's orbit; mass-energy space; function space

Online: 30 November 2021 (11:27:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0781.v1

Alternative Exhibition Spaces. Multi-criteria Method of Comparative Analysis

Joanna Stefańska, Paulina Kowalczyk, Agata Gawlak

Subject: Social Sciences, Anthropology Keywords: white cube; exhibition space; space; work; architecture; site specific; interaction

Online: 31 May 2021 (13:53:59 CEST)

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The aim of this article is to make a multi-criteria analysis of various exhibition spaces of an originally non-exhibition character and to determine how these spaces affect the selection of works and the exhibition concept. The analysis is based on the exhibitions of art objects at collective exhibitions in unconventional architectural spaces: commercial, i.e. the modern office building of PBG Gallery Skalar Office Centre in Poznań, post-industrial i.e. in the former Zakłady Przemysłu Ziemniaczanego Lubanta S.A. and in the historic interior of the "U Jezuitów" Gallery of the Cultural Integration Centre in Poznań. The multi-criteria comparative analysis shows a variety of features of the studied spaces as well as the relationship between architecture and art and their mutual interaction. The participatory role of the non-exhibition space in the process of creating an exhibition and selecting works has been proven. It has also been confirmed that the presentation of works of art in originally non-exhibition spaces creates a new quality of the artwork. Unconventional architectural space, when used for the exhibition of works of art, expands and strengthens the area of their influence through the interaction between the work and the architectural space. The specificity of the space adapted for exhibition needs, the presence and type of architectural details in the interior, the quantity and quality of light and its distribution in space, the volume and colour of the interior determine the exhibition space and influence the shape of the exhibitions organised and the reception of the artworks. The only condition for the change of the original function of an architectural space into that of an exhibition space is a coherent artistic vision of the creator. This should take into account the appropriate selection of the exhibited objects, where the process of searching for the relationship between architecture and art determines the features of the architectural space as integral components influencing the realisation of the exhibition .

Preprint ARTICLE | doi:10.20944/preprints202405.0430.v1

Evolution of Space Exploration: A Statistical Analysis of Space Launches including Challenges and Future Outlook

REDDY VARUN VUNNAM

Subject: Environmental And Earth Sciences, Space And Planetary Science Keywords: Space Exploration; International Space Station; Space Debris; Space Tourism; Space Sustainability

Online: 8 May 2024 (11:58:34 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.1421.v1

An Emerging Concentric Spatial Turn for Sustainable Systems: Beyond the Diametric Spatial Frame in Bacon’s View of Humans as Apart from and Above the Natural World Towards Being-Alongside Nature

Paul Downes

Subject: Social Sciences, Psychology Keywords: nature; othering; hierarchy; concentric space; diametric space; inclusion; descartes; western ethnocentrism

Online: 22 April 2024 (18:15:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0964.v1

Fuzzy Transform Image Compression in the YUV Space

Barbara Cardone, Ferdinando Di Martino, Salvatore Sessa

Subject: Computer Science And Mathematics, Computer Science Keywords: F-transform; F1-transform; color image compression; RGB space; YUV space.

Online: 14 September 2023 (09:08:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1844.v1

Continuous Deutsch Uncertainty Principle and Continuous Kraus Conjecture

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Hilbert space; Frame; Banach space; Deutsch uncertainty; Kraus Conjecture

Online: 27 July 2023 (05:18:36 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202207.0329.v1

Biomanufacturing for Space-Exploration – What to Take and When to Make

Nils J.H. Averesch, Aaron J. Berliner, Shannon N. Nangle, Spencer Zezulka, Gretchen L. Vengerova, Davian Ho, Cameran A. Casale, Benjamin A.E. Lehner, Jessica E. Jessica Snyder, Kevin B. Clark, Lewis R. Dartnell, Craig S. Criddle, Adam P. Arkin

Subject: Engineering, Bioengineering Keywords: in-space biomanufacturing; space synthetic biology; space bioprocess engineering; biological life-support systems; in situ resource utilization; circular economy

Online: 21 July 2022 (11:01:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0369.v1

Field Equations in C⁴ Space-Time

Dimitris Mastoridis, K. Kalogirou

Subject: Physical Sciences, Mathematical Physics Keywords: general relativity; geometric unication; dark matter-energy; mass geometrisation; complex space-time; symplectic space-time; extended space-time

Online: 19 September 2018 (08:21:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202410.1900.v1

3-Heisenberg-Robertson-Schrodinger Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Mathematics Keywords: Uncertainty Principle; Banach space

Online: 25 October 2024 (09:47:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.0812.v1

End of Time Travel

Amrit Srecko Sorli, Rado Gorjup

Subject: Physical Sciences, Space Science Keywords: time; space; time travel

Online: 10 January 2024 (10:23:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.0532.v1

Overestimation of Phonological Judgements on the Right Side of the Space

Patrizia Turriziani, Alessia Santostefano, Angela Catania, Massimiliano Oliveri

Subject: Biology And Life Sciences, Behavioral Sciences Keywords: Attention; phonological processing; space

Online: 7 June 2023 (10:04:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0529.v1

Based on the Concept of Absolute Airspace Reference system A Further Discussion on the Physical Principle of the Time-Shift Effect of Special Relativity

Shandong Zhao, Yijia Zhao

Subject: Physical Sciences, Theoretical Physics Keywords: relativity theory; Space-time concept; Absolute airspace; space-time transformation ; effect

Online: 10 May 2024 (03:35:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1580.v3

Annual Solar Geoengineering: Mitigating Yearly Global Warming Increases

Alec Feinberg

Subject: Environmental And Earth Sciences, Environmental Science Keywords: solar geoengineering; space mirrors; earth mirrors; desert modification; space clusters; stratosphere injection

Online: 21 September 2023 (09:45:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0455.v1

Green Cities: Utopia or Reality? Evidence from Zurich, Switzerland

Ana Perić, Yingying Jiang, Sacha Menz, Liana Ricci

Subject: Social Sciences, Urban Studies And Planning Keywords: green space; green urban agenda; green space attributes; mixed-method approach; Zurich

Online: 6 June 2023 (11:50:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0121.v4

The Beginning to the End of the Universe and Eternal Space-time

Amrit Ladhani

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: eternal Space-time; Big Bang and Big Crunch; cosmology; gravitational force; dark energy

Online: 19 August 2022 (04:35:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202010.0626.v1

Partial Derivative Approach to the Change of Scale Formula for the Function Space Integral

Young Sik Kim

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: function space; function space integral; partial derivative approach; change of scale formula

Online: 30 October 2020 (08:08:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0401.v2

Space Bioprocess Engineering on the Horizon

Aaron Berliner, Isaac Lipsky, Davian Ho, Jacob Hilzinger, Gretchen Vengerova, George Makrygiorgos, Matthew McNulty, Kevin Yates, Nils Averesch, Charles Cockell, Tyler Wallentine, Lance Seefeldt, Craig Criddle, Somen Nandi, Karen McDonald, Amor Menezes, Ali Mesbah, Adam Arkin

Subject: Engineering, Bioengineering Keywords: space systems bioengineering; biomanufacturing; space bioprocess engineering; biotransformation human exploration; in situ resource utilization; life support systems; biomanufacturing; space policy

Online: 27 December 2021 (15:48:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202102.0392.v1

Origins of the Time, Mass, Energy, Wave Function, Electric Charges, and Magnetic Monopoles

Jae-Kwang Hwang

Subject: Physical Sciences, Particle And Field Physics Keywords: Quantized magnetic monopoles; origins of the physical constants; Photon space fluctuations; 3-D quantized space model; 4-D Euclidean space

Online: 17 February 2021 (13:07:10 CET)

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Preprint HYPOTHESIS | doi:10.20944/preprints202401.1983.v1

Matter Is the Representation of Space-Time

Xiaohan Deng, Zhiyong Deng

Subject: Physical Sciences, Theoretical Physics Keywords: Space-time group; Space-time entanglement; Quantization of space-time; Dark matter and dark energy; CPT Symmetry

Online: 29 January 2024 (08:46:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202106.0100.v3

On the Use of Entropy as a Measure of Dependence of Two Events

Valentin Iliev

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: entropy; average information; degree of dependence; probability space; probability distribution; experiment in a sample space; linear system; affine isomorphism; classification space.

Online: 5 July 2021 (16:22:30 CEST)

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Preprint REVIEW | doi:10.20944/preprints202409.1289.v1

The Sixth Mass Extinction and Amphibian Species Sustainability Through Reproduction Biotechnologies, Biobanking, Species Restoration, and Conservation Breeding Programs

Robert K. Browne, Qinghua Lou, Pei Wang, Nabil Mansour, Svetlana A Kaurova, Edith N Gakhova, Natalia V Shishova, Victor K Uteshev, Lyudmilla I Kramarova, Govindappa Venu, Mikhail F Bagaturov, Somaye Vaissi, Pouria Heshmatzad, Peter Janzen, Aleona Swegen, Julie Strand, Dale McGinnity

Subject: Biology And Life Sciences, Life Sciences Keywords: Mass extinction; COP 15; COP 28; reproduction technologies; intergenerational justice; de-extinction; climate catastrophe; assisted evolution; terraforming; space colonisation

Online: 17 September 2024 (11:33:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1490.v1

Some Aspects of Differential Topology of Subcartesian Spaces

Liuyi Chen, Qianqian Xia

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: Singular space; Subcartesian space; Partition of unity; Tubular neighborhood; Morse function; Differential topology

Online: 22 August 2024 (03:12:09 CEST)

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Working Paper ARTICLE

On a Duality between Time and Space Cones

Waleed Al-qallaf, Kyriakos Papadopoulos

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: causality; chronology; chorology; Minkowski space; time cone; space cone; weak interval topology; duality

Online: 24 May 2019 (08:22:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.0675.v1

Unexpected Uncertainty Principle for Disc Banach Spaces

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle, Frame, Banach space.

Online: 12 March 2024 (07:49:26 CET)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202401.0063.v1

Research Paper on “Microgravity Plant Habitat – Physical and Electrical Prototyping”

SUBHASH KUMAR, Zishan Khan

Subject: Environmental And Earth Sciences, Space And Planetary Science Keywords: microgravity plant habitation; Space agriculture

Online: 2 January 2024 (09:39:28 CET)

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In recent years, the exploration of space has expanded beyond the confines of our home planet, Earth, and has ignited a fervor for understanding the potential of sustaining life in extraterrestrial environments. One critical aspect of this endeavor is the cultivation of plants in microgravity—a unique environment that challenges traditional notions of plant growth and development. The Microgravity Plant Habitat, a cutting-edge apparatus designed to facilitate plant growth in space, stands at the forefront of scientific innovation in the quest for sustainable life beyond Earth.This research paper aims to explore into the complexities of the Microgravity Plant Habitat, exploring its design, functionality, and the profound implications it holds for future space exploration and colonization efforts. As humanity sets its sights on venturing further into the cosmos, the ability to cultivate plants in microgravity becomes paramount, not only for nutrition but also for the profound role plants play in maintaining life support systems and contributing to the psychological well-being of space travelers. Development of such plant habitat module will result in a bioregenerative life support system that will help in future deep space exploration and colonization of extraterrestrial planets. These modules can also cut the cost of space missions. The challenge of establishing outposts on the Moon or Mars requires thoughtful consideration of nourishment strategies. Space-based agriculture faces significant hurdles due to harsh conditions and limited resources. Researchers explore innovative solutions like hydroponics and aeroponics to meet nutritional needs and enhance well-being in extraterrestrial settlements. Beyond technological prowess, creating space bases demands a holistic approach, addressing biological and psychological aspects. Navigating deep space exploration emphasizes that food isn't just a logistical challenge but a symbol of our resilience and determination to thrive beyond Earth's confines.

Preprint ARTICLE | doi:10.20944/preprints202309.1209.v1

Unbounded Donoho-Stark-Elad-Bruckstein-Ricaud-Torrésani Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Frame; Banach space

Online: 18 September 2023 (19:23:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0799.v1

Using Deep Learning Methods for Segmenting Polar Mesospheric Summer Echoes

Erik Domben, Puneet Sharma, Ingrid Mann

Subject: Computer Science And Mathematics, Computer Vision And Graphics Keywords: Deep Learning; Segmentation; Space Physics

Online: 12 June 2023 (08:49:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0594.v1

What is the Shape of Geographical Time-Space? A Three Dimensional Model made of Curves and Cones

Alain L’Hostis, Farouk Abdou

Subject: Business, Economics And Management, Accounting And Taxation Keywords: Geographical Time-Space; Transport; Cartography

Online: 24 March 2021 (14:02:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201807.0144.v1

Extension of Space Syntax Methods to Generic Urban Variables

Roberto D'Autilia, Marco Spada

Subject: Environmental And Earth Sciences, Other Keywords: space syntax; graph theory; city

Online: 9 July 2018 (13:35:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1812.v1

Theory, Technology and Teaching Exploration of Curriculum Chains

Peng Liu, Xuhui Zhang, Xiangang Cao, Xuechao Duan, Qiao Xinzhou

Subject: Social Sciences, Education Keywords: social needs; curriculum chains; curriculum energy efficiency space; student ability space; dynamic evolution; control

Online: 27 October 2023 (13:27:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1770.v1

An Exploration on a Normed Space called r-Normed Space: Some Properties and an Application

Rizal Purnawan

Subject: Computer Science And Mathematics, Analysis Keywords: r-normed space; r-norm; Lp-space; measure theory; functional analysis; coefficient of determination

Online: 27 October 2023 (11:08:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0019.v1

A Quantum Space Model of Cosmic Evolution: Dark Energy and the Fate of the Universe

Carlos Melendres

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Quantum Space; spaceons; cosmic evolution; Friedmann equation; cyclic eternal universe; gravitational force; space force

Online: 4 April 2022 (14:39:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0188.v1

Nanocomposites and Semiconductor Devices Based on Recycled Radioactive Waste

Valeriy Kizka

Subject: Physical Sciences, Radiation And Radiography Keywords: recycling; radioactive waste; radioactive nanopowders; radioactive nanocomposites; radioactive semiconductor devices; radioactive space microelectronics; space industry

Online: 12 July 2022 (10:08:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0239.v1

Gray Public Space Under Urban Bridge - A Case Study of Public Arts Space Micro-Transformation Focusing on "Regional Culture" and "Art for All"

Ting Liu Liu, Wu Cao, Yuyi Liu

Subject: Arts And Humanities, Art Keywords: Urban grey space; Space under bridge; Public Art; Micro-transformation; Regional culture; Art for all

Online: 26 April 2022 (10:55:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0620.v2

Parks are Critical Urban Infrastructure: Perception and Use of Urban Green Spaces in NYC During COVID-19

Bianca Lopez, Christopher Kennedy, Timon McPhearson

Subject: Business, Economics And Management, Accounting And Taxation Keywords: Urban green space; COVID-19; urban parks; open space; New York City; urban infrastructure; equity

Online: 30 September 2020 (10:00:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0570.v1

Both Classical and Quantum Information: Both Bit and Qubit. Both Physical and Transcendental Time

Vasil Penchev

Subject: Physical Sciences, Quantum Science And Technology Keywords: bit and qubit, classical and quantum information, epoché, physical and mathematical transcendentalism, qubit space (qubit Hilbert space), separable complex Hilbert space, the totality, transcendental time

Online: 23 June 2021 (11:12:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202410.1581.v1

Implications of Time-Invariant Space Model in Fundamental Physics and Cosmology

Amrit Šorli

Subject: Physical Sciences, Space Science Keywords: space; time; matter; energy; gravity; cosmology

Online: 21 October 2024 (10:06:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1562.v1

p-adic Equiangular Lines and p-adic van Lint-Seidel Relative Bound

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Equiangular lines; p-adic Hilbert space

Online: 19 July 2024 (09:33:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1342.v1

Making the Research and Innovation Ethical: A Conceptual Framework for Ethics Assessment of Nanotechnology Innovations

Skanthesh Lakshmanan, Vinayak Padikkal Varyam, Oriparambil Sivaraman Nirmal Ghosh

Subject: Social Sciences, Other Keywords: nanoethics; technology assessment; ethical space; mycotoxin

Online: 21 May 2024 (04:59:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1704.v1

Vision System for the Mars Sample Return Capture, Containment and Return System (CCRS)

Brent Jon Bos, David Donovan, John Capone, Chen Wang, Terra Hardwick, Dylan Bell, Yuqing Zhu, Robert Podgurski, Bashar Rizk, Ireneusz Orlowski, Rachel Edison, David Harvey, Brianna Dizzon, Lindsay Haseltine, Kristoffer Olsen, Chad Sheng, Robert Bousquet, Luan Vo, Georgi Georgiev, Kristen Washington, Michael Singer, Stefan Ioana, Anloc Le, Elena Georgieva, Michael Hackett, Michael Ravine, Michael Caplinger, Phillip Coulter, Erin Percy, Charles Torisky, Jean Lauenstein, Kaitlyn Ryder, Michael Campola, Dillon Johnstone, William J. Thomes, Richard G. Schnurr, John McCloskey, Eugenia DeMarco, Ellen Lee, Calinda Yew, Bo Yang, Mingyu Han, Bartosz Blonski

Subject: Engineering, Aerospace Engineering Keywords: Mars; cameras; sample return; space optics

Online: 26 April 2024 (09:33:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.0342.v1

Nonlinear Heisenberg-Robertson-Schrodinger Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Lipschitz map; Banach space

Online: 6 February 2024 (09:28:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0799.v1

Hypersurfaces in a Euclidean Space with a Killing Vector Field

Mohammed Guediri, Sharief Deshmukh

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: Euclidean space; Hypersurface; Killing vector field

Online: 13 November 2023 (10:21:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202309.0918.v1

Categorical Join and Generating Families in Diffeological Spaces

Enrique Macías -Virgós, Reihaneh Mehrabi

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: Diffeological space; Generating family; Categorical join

Online: 14 September 2023 (08:36:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0445.v1

Antigravity in the Six Dimensional Space-Time

seyed kazem mousavi

Subject: Physical Sciences, Applied Physics Keywords: antigravity; electromagnetic; six dimensional space-time

Online: 7 September 2023 (02:49:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1108.v1

An Endpoint Functional Continuous Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle, Parseval Frame, Banach space.

Online: 15 August 2023 (09:08:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1643.v1

Functional Continuous Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Parseval Frame; Banach space

Online: 25 July 2023 (04:15:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1569.v1

Gravity as a Result of Symmetry between Matter Energy and Space Energy

Amrit Sorli, Štefan Čelan

Subject: Physical Sciences, Theoretical Physics Keywords: space; matter; symmetry; gravity; gravitational singularities

Online: 24 July 2023 (08:52:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1108.v1

High-Sensitivity Seismometer Development for Lunar Applications

Leandro De Paula, Ronald Norton, Ho Jung Paik, Nicholas Schmerr, Roger Williamson, Talso Chui, Hahn Inseob

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: lunar seismology; instrumentation; seismometer; planets; space

Online: 17 July 2023 (11:54:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0323.v6

The Morphology of the Active Galactic Nucleus and its Impact on Accretion Flows and Relativistic Jets

Mohammed Al-Fadhli

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Relativistic Jets; Conformal Space-time Background.

Online: 12 January 2023 (13:50:25 CET)

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The G2 gas cloud motion data and the scarcity of observations on the event horizon-scale distances have challenged the comprehensiveness of the central supermassive black hole model. In addition, the Planck Legacy 2018 release has preferred a positively curved early Universe with a confidence level higher than 99%. This study investigates the impact of the background curvature and its evolution over the conformal time on the formation and morphological evolution of central compact objects and the consequent effect on their host galaxies. The formation of a galaxy from the collapse of a supermassive gas cloud in the early Universe is modeled based on interaction field equations as a 4D relativistic cloud-world that flows and spins through a 4D conformal bulk of a primordial positive curvature considering the preference of the Planck release. Owing to the curved background, this scenario of galaxy formation reveals that the core of the galaxy undergoes a forced vortex formation with a central event horizon leading to opposite vortices (traversable wormholes) that spatially shrink while evolving in the conformal time. It indicates that the galaxy and its core are formed in the same process whereas the surrounding gas clouds form the spiral arms due to the frame-dragging induced by the fast-rotating core. It demonstrates that the accretion flow onto the central supermassive compact object only occurs at the central event horizon of the two opposite vortices while their other ends eject the relativistic jets. This can elucidate the relativistic jet formation and explain the G2 gas cloud motion if its orbit is around one of the vortices but at a distance from the central event horizon. The gravitational potential of the early curved bulk could contribute to galaxy formation while the present spatial flatness deprives the potential of bulk which could lead to galaxy quenching. The formation of a galaxy and its core simultaneously could explain the growth of the supermassive compact galaxy core to a mass of ~10⁹ M_⊙ at just 6% of the current Universe age.

Preprint ARTICLE | doi:10.20944/preprints202212.0402.v1

Cultural Space Methodology on Assessment of Authenticity of Indigenous Community Forest and Conservation Area in Indonesia

Rizqi Abdulharis, Susilo Kusdiwanggo, Ida Nurlinda, Gustaff Harriman Iskandar, Angga Dwiartama, Andri Hernandi, Teguh Purnama Sidiq

Subject: Social Sciences, Geography, Planning And Development Keywords: cultural space; indigenous community; Indonesia; methodology

Online: 21 December 2022 (11:53:49 CET)

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Indigenous knowledge is proven to be one of the foundations of sustainable land and marine management. While indigenous knowledge is acknowledged as of important factors on maintenance of biodiversity of the planet, it also ensures the sustenance of social and economic system of indigenous community. To facilitate the application of indigenous knowledge on management of customary forest in Indonesia, since 2012, the Government of Indonesia has been providing formal access for indigenous communities to their forests to maintain forest sustainability and to enhance the welfare of indigenous community. Nonetheless, the achievement of sustainable development goals in the scope of forest and conservation area management is threatened by various competing interests and power imbalance, which mostly leads to conversion of naturally vegetated area, as well as the inability of the community to integrate new economic opportunities to its institution. Moreover, the Government of Indonesia has not been regulating the involvement of indigenous community on the management of conservation area. Most importantly, such a program provides no reference on indigenous community, especially on the assessment of authenticity of indigenous community’s forest. Cultural space methodology may fill the aforementioned gaps. The methodology was developed based on the notion of cultural space and land administration, particularly the people-and-land/marine space relationship. Moreover, such a methodology was also constructed based on the experiences of agricultural and maritime communities in Indonesia on the administration of their territories. The methodology provides a procedure to convert information on the interrelation of indigenous community, its cultural space in forest and conservation area, and indigenous knowledge into geospatial information and data that represent the cultural space unit as a geographic feature. Therefore, such methodology may be utilised to assess the authenticity of a long-existing relationship between a community, especially an indigenous one, and its land, particularly that serves conservational function.

Preprint ARTICLE | doi:10.20944/preprints202209.0438.v1

Indefinite Halmos, Egervary and Sz.-Nagy Dilations

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Dilation; Indefinite inner product space; Module

Online: 29 September 2022 (02:48:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0348.v1

Novel State-Space Realization Generalized from Turbine Blade Modeling

Andrew van Paridon, Timothy Sands

Subject: Engineering, Mechanical Engineering Keywords: transfer function; state-space; realization; conversion

Online: 28 February 2022 (07:23:56 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0693.v1

Measuring and Evaluating the Quality of Urban Walkways from the Perspective of the Creative Urban Space

Ameneh Ekrasardashti, Hassan Sajadzadeh, Farshid Aram

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Urban walkways; Creative city, Urban Space

Online: 28 May 2021 (10:57:07 CEST)

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Working Paper ARTICLE

Biocosmology - Multiverse, Life, and Consciousness

Amrit Srecko Sorli, Štefan Čelan

Subject: Physical Sciences, Acoustics Keywords: cosmology, life, superfluid quantum space, consciousness.

Online: 15 April 2021 (13:38:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0727.v1

Art in Urban Spaces

Mehrdad Karimimoshaver, Bahare Eris, Farshid Aram, Amir Mosavi

Subject: Social Sciences, Anthropology Keywords: meaning; urban space; urban art; Tehran

Online: 30 March 2021 (10:48:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0676.v1

Conformal Symmetry and Supersymmetry in Rindler Space

J.W. Van Holten

Subject: Physical Sciences, Particle And Field Physics Keywords: Conformal field theory; supersymmetry; Rindler space

Online: 28 July 2020 (10:28:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0038.v1

Characterization of Caristi Type Mapping through its Absolute Derivative

Mohamad Muslikh, Adem Kilicman, Siti Hasana, Norfifah Bachok

Subject: Computer Science And Mathematics, Analysis Keywords: Fixed point theorem; Differentiation; Metric space

Online: 3 April 2018 (15:30:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0164.v1

Analysis of Dark Current in BRITE Nanostellite CCD Sensors

Adam Popowicz

Subject: Environmental And Earth Sciences, Space And Planetary Science Keywords: CCD defects; space telescopes; nano-satellites

Online: 18 January 2018 (04:31:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201607.0060.v1

The RadioAstron dedicated DiFX distribution

Gabriele Bruni, James M. Anderson, Walter Alef, Helge Rottmann, Andrei P. Lobanov, J. Anton Zensus

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: VLBI; Space-VLBI; Correlation; RadioAstron; AGN

Online: 19 July 2016 (04:54:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1612.v1

On \v{C}ech-Completeness of the Space of $\tau$-Smooth Idempotent Probability Measures

Ljubisa D. R. Kocinac, Adilbek A. Zaitov, Muzaffar R. Eshimbetov

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: \v{C}ech-complete space; compact space; probability measure; $\tau$-smooth idempotent probability measure; neighbourhood system

Online: 19 July 2024 (16:57:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.0004.v1

Quantum Space-Time Symmetries: A Principle of Minimum Group Representation

Norma SANCHEZ, Diego CIRILO-LOMBARDO

Subject: Physical Sciences, Theoretical Physics Keywords: quantum physics; space-time; symmetry; fundamental principle; minimal group representation; Metaplectic group; coherent states phase space

Online: 1 November 2023 (04:12:51 CET)

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We show that, as in the case of the principle of minimum action in classical and quantum mechanics, there exists an even more general principle in the very fundamental structure of quantum space-time: This is the principle of minimal group that allows to consistently and simultaneously obtain a natural description of the spacetime dynamics and the physical states admissible in it. The theoretical construction is based on the physical states that are average values of the generators of the Metaplectic group Mp(n) , the double covering of SL(2C) in a vector representation, with respect to the coherent states carrying the spin weight. Our main results here are: (i) There exists a connection between the dynamics given by the Metaplectic group symmetry generators and the physical states (mappings of the generators through bilinear combinations of the basic states). (ii) The ground states are coherent states of the Perelomov-Klauder type defined by the action of the Metaplectic group which divide the Hilbert space into even and odd states mutually orthogonal. They carry a spin weight 1/4 and 3/4 respectively from which, two other basic states can be formed. (iii) The physical states, mapped bilinearly with the basic 1/4 and 3/4 spin weight states, plus their symmetric and antisymmetric combinations, have spin contents s = 0, 1/2, 1, 3/2 and 2. (iv) The generators realized with the bosonic variables of the harmonic oscillator introduce a natural supersymmetry and a superspace whose line element is the geometrical Lagrangian of our model. (v) From the line element as operator level, a coherent physical state of spin 2 can be obtained and naturally related to the metric tensor. (vi) The metric tensor is naturally discretized by taking the discrete series given by the basic states (coherent states) in the n number representation, reaching the classical (continuous) space-time for n going to infinity. (vii) There emerges a relation between the eigenvalue of our coherent state metric solution and the black hole area (entropy) as A_{bh}/4 l_{p}^{2} = I alpha I relating the phase space of the metric found g_{ab} and the black hole area A_{bh} through the Planck length l_{p}^{2} and the eigenvalue I alpha I of the coherent states. As a consequence of the lowest level of the quantum discrete space-time spectrum, eg the ground state associated to n = 0 and its characteristic length, there exists a minimum entropy related to the black hole history.

Preprint ARTICLE | doi:10.20944/preprints202310.0285.v1

Trajectory Smoothing Planning of Delta Parallel Robot Combining Cartesian and Joint Space

Zhu Dachang, He Yonglong, Yu Xuezhe, Li Fangyi

Subject: Engineering, Mechanical Engineering Keywords: Delta parallel robot; kinematic and dynamic modelling; trajectory smoothing planning; combining Cartesian space with joint space

Online: 9 October 2023 (02:58:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1602.v1

The Convergence of Discrete Models for Nonlinear Schrödinger Equation in Dark Solitons Motion

Yazhuo Li, Qian Luo, Quandong Feng

Subject: Computer Science And Mathematics, Mathematics Keywords: Nonlinear schrödinger equation; Space discretization models; Time-space discretization models; Crank-Nicolson method; New-Difference method.

Online: 23 May 2023 (07:45:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202005.0371.v1

Orthogonal Gyrodecompositions of Real Inner Product Gyrogroups

Milton Ferreira, Teerapong Suksumran

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: real inner product gyrogroup; orthogonal decomposition; gyroprojection; coset space; partitions; quotient space; gyrolines; cogyrolines; fiber bundles

Online: 23 May 2020 (10:32:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0371.v1

Dynamic Path in C⁴ Space-Time

Dimitris Mastoridis, K. Kalogirou

Subject: Physical Sciences, Mathematical Physics Keywords: dynamic path; ADM formalism; complex space-time; extended space-time; unied theories; geometric unication

Online: 19 September 2018 (08:30:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0401.v1

Affine Type Aq Functional Equation In Various Banach Spaces

Sandra Pinelas, Mohan Arunkumar, Elumalai Sathya

Subject: Computer Science And Mathematics, Analysis Keywords: Mixed functional equations; Generalized Ulam - Hyers stability; Direct Method; Banach space; Fixed Method; Intuitionistic Fuzzy Banach space

Online: 4 July 2024 (09:50:30 CEST)

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Preprint REVIEW | doi:10.20944/preprints202402.1154.v1

3D Printing Modules for Self-Assembling Space Systems

Alex Ellery, Abdurr Elaskri

Subject: Engineering, Aerospace Engineering Keywords: additive manufacturing; 3D printed electric motors; self-assembly; reconfigurable robotics; flat-pack space structures; space debris resources

Online: 20 February 2024 (14:25:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0821.v1

Hybrid FSO/RF Communications in Space–Air–Ground Integrated Networks: A Reduced Overhead Link Selection Policy

Petros S. Bithas, Hector E. Nistazakis, Athanassios Katsis, Liang Yang

Subject: Engineering, Telecommunications Keywords: Composite fading; free space optical communications; hybrid FSO/RF communications; link selection; space-air-ground integrated networks

Online: 11 January 2024 (02:38:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints201804.0291.v1

The Design of Space Based on Architectural Geometry

Wasilah Wasilah, Andi Hildayanti, Hamzah Hamzah

Subject: Engineering, Energy And Fuel Technology Keywords: expressional space; geometry architecture; mural; skateboard; landscape; pure geometry; composition of geometry; direction wall; opening; space form

Online: 23 April 2018 (12:03:50 CEST)

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