scholarly journals Out-Tree Generation Using Controllable Field Space Colonization and Application to Modeling

2021 ◽  
Vol 4 (2) ◽  
pp. 28
Author(s):  
Toshiki Tanaka ◽  
Tomoya Ito ◽  
Tsukasa Kikuchi
Keyword(s):  
Tree Generation ◽  
Space Colonization

scholarly journals Inevitable future: space colonization beyond Earth with microbes first

2019 ◽  
Vol 95 (10) ◽  
Author(s):  
Jose V Lopez ◽  
Raquel S Peixoto ◽  
Alexandre S Rosado
Keyword(s):  
Potential Space ◽  
Public And Private ◽  
Planetary Protection ◽  
Overwhelming Evidence ◽  
Future Space ◽  
Private Research ◽  
Life On Earth ◽  
Space Colonization ◽  
Future Plans

ABSTRACT Based on modern microbiology, we propose a major revision in current space exploration philosophy and planetary protection policy, especially regarding microorganisms in space. Mainly, microbial introduction should not be considered accidental but inevitable. We hypothesize the near impossibility of exploring new planets without carrying and/or delivering any microbial travelers. In addition, although we highlight the importance of controlling and tracking such contaminations—to explore the existence of extraterrestrial microorganisms—we also believe that we must discuss the role of microbes as primary colonists and assets, rather than serendipitous accidents, for future plans of extraterrestrial colonization. This paradigm shift stems partly from the overwhelming evidence of microorganisms’ diverse roles in sustaining life on Earth, such as symbioses and ecosystem services (decomposition, atmosphere effects, nitrogen fixation, etc.). Therefore, we propose a framework for new discussion based on the scientific implications of future colonization and terraforming: (i) focus on methods to track and avoid accidental delivery of Earth's harmful microorganisms and genes to extraterrestrial areas; (ii) begin a rigorous program to develop and explore ‘Proactive Inoculation Protocols’. We outline a rationale and solicit feedback to drive a public and private research agenda that optimizes diverse organisms for potential space colonization.

Automatic Fault Tree Generation from Radiation-Induced Fault Models

2020 ◽  
Author(s):  
Rebekah A. Austin ◽  
Nagabhushan Mahadevan ◽  
Arthur F. Witulski ◽  
Gabor Karsai ◽  
Brian D. Sierawski ◽  
...  
Keyword(s):  
Fault Tree ◽  
Fault Models ◽  
Tree Generation ◽  
Radiation Induced

A study of ac tree generation in void-free, specially refined PMMA

1972 ◽  
Author(s):  
M. Sone ◽  
T. Hemni ◽  
S. Kojima ◽  
A. Machida ◽  
Y. Toriyama
Keyword(s):  
Tree Generation

An Improved Test Tree Generation Algorithm from a Graphical Model

2021 ◽  
Author(s):  
Pan Liu ◽  
Yihao Li ◽  
Hao Chen ◽  
Xuankui Zheng ◽  
Sihao Huang
Keyword(s):  
Graphical Model ◽  
Generation Algorithm ◽  
Tree Generation ◽  
Test Tree

A Choice of Catastrophes: Common Arguments for Space Colonization

2012 ◽  
pp. 113-149
Author(s):  
Cameron M. Smith ◽  
Evan T. Davies
Keyword(s):  
Space Colonization

Psychic Space, Colonization

2014 ◽  
pp. 1533-1535
Author(s):  
Esther Rapoport
Keyword(s):  
Space Colonization

scholarly journals Structural diversity and regeneration patterns of the Norway spruce (Picea abies (L.) Karst) dominated virgin forest in NNR Zadná Poľana

Beskydy ◽  
2013 ◽  
Vol 6 (2) ◽  
pp. 127-134 ◽  
Author(s):  
M. Saniga ◽  
Miroslav Balanda ◽  
J. Pittner ◽  
S. Kucbel ◽  
P. Jaloviar
Keyword(s):  
Gini Index ◽  
Nature Reserve ◽  
Structural Diversity ◽  
Height Growth ◽  
Forest Stand ◽  
Virgin Forest ◽  
Old Growth Forest ◽  
Tree Generation ◽  
Evans Index ◽  
Structural Indices

The paper analyzes the structural diversity of the spruce dominated old-growth forest in National Nature Reserve (NNR) Zadná Poľana on the series of three permanent research plots (PRP) with the area of 0.5 ha each. The height and diameter diversity as well as the spatial distribution were expressed using standard structural indices (Füldner’s TH and TD index, Gini index, Clark-Evans index). Obtained results confirmed the low structural diversity regardless of the developmental stage of investigated forest. The extensive ungulate browsing retards the height growth of the subsequent tree generation and leads toward to the structural homogenization of the future forest stand.

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