Stokes vector analysis of LWIR polarimetric in adverse weather

2011 ◽  
Author(s):  
Jacob L. Michalson ◽  
Joao M. Romano ◽  
Luz Roth
Keyword(s):  
Vector Analysis ◽  
Stokes Vector ◽  
Adverse Weather

Simplified polarization demultiplexing based on Stokes vector analysis for intensity-modulation direct-detection systems

2016 ◽  
Vol 55 (10) ◽  
pp. 100501
Author(s):  
Xinyu Zhou ◽  
Lianshan Yan ◽  
Zhiyu Chen ◽  
Anlin Yi ◽  
Yan Pan ◽  
...  
Keyword(s):  
Direct Detection ◽  
Intensity Modulation ◽  
Vector Analysis ◽  
Stokes Vector ◽  
Detection Systems

scholarly journals Stokes vector analysis of adaptive optics images of the retina

2008 ◽  
Vol 33 (2) ◽  
pp. 137 ◽  
Author(s):  
Hongxin Song ◽  
Yanming Zhao ◽  
Xiaofeng Qi ◽  
Yuenping Toco Chui ◽  
Stephen A. Burns
Keyword(s):  
Adaptive Optics ◽  
Vector Analysis ◽  
Stokes Vector

scholarly journals Complete Stokes vector analysis with a compact, portable rotating waveplate polarimeter

2021 ◽  
Vol 92 (9) ◽  
pp. 093101
Author(s):  
T. A. Wilkinson ◽  
C. E. Maurer ◽  
C. J. Flood ◽  
G. Lander ◽  
S. Chafin ◽  
...  
Keyword(s):  
Vector Analysis ◽  
Stokes Vector

An Application of the HFACS Method to Aviation Accidents in Africa

2016 ◽  
Vol 6 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Isaac Munene
Keyword(s):  
Human Factors ◽  
Physical Environment ◽  
Human Factor ◽  
Flight Training ◽  
African Countries ◽  
Causal Factors ◽  
Aviation Accidents ◽  
Factors Analysis ◽  
Adverse Weather ◽  
Decision Errors

Abstract. The Human Factors Analysis and Classification System (HFACS) methodology was applied to accident reports from three African countries: Kenya, Nigeria, and South Africa. In all, 55 of 72 finalized reports for accidents occurring between 2000 and 2014 were analyzed. In most of the accidents, one or more human factors contributed to the accident. Skill-based errors (56.4%), the physical environment (36.4%), and violations (20%) were the most common causal factors in the accidents. Decision errors comprised 18.2%, while perceptual errors and crew resource management accounted for 10.9%. The results were consistent with previous industry observations: Over 70% of aviation accidents have human factor causes. Adverse weather was seen to be a common secondary casual factor. Changes in flight training and risk management methods may alleviate the high number of accidents in Africa.

Justification of the need to increase the fertility of reclaimed alluvial soils of JSC «Moskovskoe»

2020 ◽  
pp. 44-48
Author(s):  
Andrey ilinsky ◽  
Alexander Nefedov ◽  
Konstantin Evsenkin
Keyword(s):  
Organic Matter ◽  
Agricultural Land ◽  
Crop Yields ◽  
Anthropogenic Impacts ◽  
Fertility Restoration ◽  
Research Work ◽  
Alluvial Soils ◽  
Ecological Stability ◽  
Reclaimed Land ◽  
Adverse Weather

Global climatic changes, technogenic pollution by pollutants, violations of technologies of exploitation of reclaimed land lead to a decrease in fertility and soil degradation of agricultural land. Adverse weather conditions, resulting in a lack of adequate flood water, and economic difficulties in agriculture make it difficult to fill the deficit of organic matter and macronutrients in reclaimed alluvial soils. The monitoring of agrochemical properties of alluvial meadow medium-loamy soil of the stationary site (reclaimed lands of JSC «Moskovskoye» of Ryazan region), located in the floodplain of the Oka river, conducted by the Meshchersky branch of Vniigim, showed the presence and intensification of degradation changes in the soil. Thus, comparing the agrochemical indicators in the layer 0–20 cm, carried out in 1995, with the indicators of 2019, it should be noted a decrease in soil fertility. The decrease in soil quality was expressed in a decrease in the amount of mobile phosphorus by 37.6 %, mobile potassium by 53.3 %. Also, during this time there was a decrease in organic matter by 9.1 %, and an increase in soil acidity was 0.6 pH. As a result of such changes, soils lose ecological stability and become more vulnerable to adverse weather and negative anthropogenic impacts. In such a situation, advanced agricultural techniques should be actively used to obtain guaranteed, environmentally safe crop yields and restore the fertility of degraded reclaimed soils. In this regard, there is a need to develop innovative methods of fertility restoration of degraded alluvial soils in reclaimed lands using multi-component organic-mineral ameliorants. Meshchersky branch performs research work in addressing this issue.

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