An Analysis of Wildlife Strike Reporting at 40 Part 139 Airports at four Federal Aviation Administration Regions (2016-2020)

Purpose: The purpose of this current study is threefold: To identify wildlife strike reporting trends at 40 busiest Part 139 Class I airports in the following Federal Aviation Administration (FAA) regions – East (AEA), Southwest (ASO), Western Pacific (AWP), and Central (ACE) from 2016 through 2020, To investigate the existence of a difference in wildlife strike reporting per 100,000 aircraft operations (wildlife strike index) between the four FAA regions during the same period; and To develop information based upon the data analyzed that can be used by aviation stakeholders for the safety management of wildlife hazards to aviation. The following research questions will be addressed in the current study: What are the descriptive statistics for type of operator, time of day, level of damage to aircraft, altitude of strike, and phase of flight when examining wildlife-strike report data from the 40 busiest Part 139 Class 1 in the AEA, ASO, AWP and ACE FAA regions? What is the number of wildlife strike reports per 100,000 movements (wildlife strike index) for each of the 40 analyzed airports during 2016 – 2020? Is there a difference in the wildlife strike index between the four FAA regions from 2016 – 2020? Design/Methodology: The research questions will be answered utilizing wildlife strike data from the Federal Aviation Administration’s National Wildlife Strike Database (NWSD) as well as aircraft operations data from the Bureau of Transportation Statistics (BTS) database. It is important to note that the BTS will also be utilized for the identification of the airports to be analyzed in this study (2016-2020). Both databases (NWSD/BTS) are publicly available and can be accessed electronically. Originality/value: This study will add updated data and information to the existing wealth of knowledge regarding damaging strikes and strikes by FAA region across the United States. It will provide valuable information that can be utilized by Part 139 airport operators to update their Safety Management Systems (SMS) and to incorporate additional strategies to mitigate the risk of aircraft accidents resulting from wildlife strikes. The obtained information can also be utilized by aviation stakeholders to create additional training for pilots so that they have the competence to mitigate wildlife strikes as appropriate. Keywords: wildlife strikes, damaging strikes, aviation safet

Outbreak of Covid-19 and its Impact on Public and Mental Health on Dulahipur Village, Uttar Pradesh

COVID-19 pandemic has created chaos around the globe. In this global humanitarian crisis, mental health issues have been reported all over the world. The psychosocial implications of this outbreak might have its presence than the infection itself. Furthermore, when scarce resources are dedicated to controlling the pandemic, mental health issues and their treatment usually takes a backseat. With specific attention to the Indian context, thisstudy aims to examine the prevalent public and mental health challenges during the COVID-19 pandemic. The report also explores the impact of this unprecedented environment on the mental health of individuals and communities in its current magnitude. It also sought to comprehend the permanent and temporary changes that transpired in the lives of villagers post the pandemic due to the problems faced. The study concludes by stating that unemployment was the foremost cause of mental stress, and in the current scenario, there is a requirement for real-time monitoring of mental health issues across the population at-risk groups. Marginalized sections of the society, including the elderly, undocumented migrants, and homeless persons, should be given priority, and extra effort should be made to obstruct their deteriorated mental health conditions due to this pandemic

The Influence of Tangible and Intangible Factors on Retail Image in Tripoli of Libya

Using the theory reasoned action as its basis; the objective of this study is to identify the relationships among tangible and intangible factors on retail image. Furthermore, for body of knowledge, this study will present the clear description of retail image trends in Tripoli of Libya. This study proposes the tangible and intangible factors as the construct to enhance the understanding of an individual's on retail image of Tripoli context. The primary objective of this research is to test the research hypotheses, based upon the conceptual framework of this study. Questionnaire is designed and distributed to the sample of the research. This study use quantitative research approach and survey the user on retail image in Tripoli of Libya. Questionnaire is designed and distributed to the sample of the research. Based on the data of 120 respondents of retail imager stakeholder, the multi-items measures were subjected to a series of validity and reliability checks. For the multi-item scale, the set of items that correspond to each theoretical construct was initially subjected to an examination of Cronbach's alpha, item-to-total correlations and regression test. This chapter also provides a detailed discussion of the results of empirical testing of the research framework. The result of the final relationship variables and the testing of the influence of the variables are presented. This study confirmed tangible and intangible factors have a direct positive significant influence on retail image in Tripoli of Libya

Effectiveness of a Flight Simulation Training Visual Aid for Normal and Crosswind Approach and Landing

Flight simulators have a significant contribution to effective and efficient flight training across the globe. Significant literature has suggested the effectiveness of simulation tools in training pilots in different scenarios and is an area for continued development and research. To continue those efforts, this study assessed the effectiveness of visual aid to be used as an instructional aid for flight instruction for crosswind landings. The need for further training in crosswind landing is substantiated due to the significantly high number of accidents for General Aviation aircraft in the approach and landing phase of flights. The study utilized an experimental research design and consisted of pre-survey, post-survey, and performance assessments. Along with the descriptive data collected from the surveys, the 5-point competency-based performance assessment was used to grade the landing performance in seven aspects of crosswind landings which was used for the hypothesis testing. The post-results survey highlighted that most participants found that the visual aid assisted with identifying visual cues and perceptions that aided the participants during the crosswind landings in the FTD. Additionally, almost all participants found the visual aid relatively simple to understand and utilize, with all the corresponding lines and marks being easily understood. The statistical analysis of the null hypotheses identified that the visual aid allowed the participants to successfully maintain the required airspeed, vertical speed, and height above the runway threshold on the traffic pattern\u27s final leg. The conclusion of the study highlights the need for such visual aids, further potential improvements in such a visual aid, and scope of utilizing visual aids for improving flight education. While the post-survey and performance assessment highlighted the deficiency in the visual aid in fulfilling some of the objectives of the development of the aid, the results should be used as a foundation for further development of visual aids for flight education

Optimum Mix for Pervious Geopolymer Concrete (GEOCRETE) Based on Water Permeability and Compressive Strength

The production of ordinary Portland cement (OPC) consumes considerable natural resources and energy, and it also affects the emission of a significant quantity of CO2 in the atmosphere. This pervious geopolymer concrete study aims to explore an alternative binder without OPC. Pervious geopolymer concretes were prepared from fly ash (FA), sodium silicate (NaSiO3), sodium hydroxide (NaOH) solution, and coarse aggregate (CA). The effects of pervious geopolymer concrete parameters that affect water permeability and compressive strength are evaluated. The FA to CA ratios of 1:6, 1:7,1:8, and 1:9 by weight, CA sizes of 5–10, 10–14, and 14–20 mm, constant NaSiO3/NaOH ratio of 2.5, alkaline liquid to fly ash (AL/FA) ratios of 0.4, 0.5, and 0.6, and NaOH concentrations of 8, 10, and 12 M were the pervious geopolymer concrete mix proportions. The curing temperature of 80 °C for 24 h was used. The results showed that a pervious geopolymer concrete with CA of 10 mm achieved water permeability of 2.3 cm/s and compressive strength of 20 MPa with AL/FA ratio of 0.5, NaOH concentration of 10 M, and FA:CA of 1:7. GEOCRETE is indicated to have better engineering properties than does pervious concrete that is made of ordinary Portland cement

Influence of curing on pore properties and strength of alkali activated mortars

The paper investigates the effect of wet/dry, wet and dry curing on the pore properties and strength of an alkali activated cementitious (AACM) mortar. The pore characteristics were determined from the cumulative and differential pore volume curves obtained by mercury intrusion porosimetry. AACM mortars possess a bimodal pore size distribution while the control PC mortar is unimodal. AACM mortars have a lower porosity, higher capillary pore volume, lower gel pore volume and lower critical and threshold pore diameters than the PC mortar which indicate greater durability potential of AACMs. Wet/dry curing is optimum for AACM mortars while wet curing is optimum for the PC mortar. Shrinkage and retarding admixtures improve the strength and pore structure of the AACMs

EUCALYPTUS BENTHAMII: UMA ESPÉCIE GENETICAMENTE PROMISSORA PARA PRODUÇÃO DE MADEIRA EM ÁREAS SUJEITAS A OCORRÊNCIA DE GEADA

O presente artigo foi escrito a convite da Revista FLORESTA e da coordenação do curso de Pós-Graduação em Engenharia Florestal da Universidade Federal do Paraná (UFPR) em comemoração ao cinquentenário do programa de Pós-Graduação, neste será apresentado uma síntese dos principais resultados obtidos ao longo do desenvolvimento da tese intitulada “Melhoramento genético de Eucalyptus benthamii Maiden et Cambage visando a produção de madeira serrada em áreas de ocorrência de geadas severas”, que foi desenvolvida na linha de pesquisa “Silvicultura”, sob a orientação do professor Antonio Rioyei Higa, durante os anos de 2005 à 2008. Mesmo antes do início do trabalho de pesquisa a Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (EPAGRI) esteve envolvida com o projeto, em parceria com o grupo de pesquisa da UFPR, também se envolveram professores e pesquisadores da Escola Superior de Agricultura “Luiz de Queiroz” da Universidade de São Paulo, da Embrapa Floresta e da Universidade de Freiburg da Alemanha. Na ocasião de realização da tese um dos desafios dos silvicultores localizados em áreas com ocorrência de geadas era ter disponível para plantio, sementes ou clones geneticamente melhorados para as características do local e com qualidade da madeira que se destinasse para serraria. Assim o objetivo da tese foi definir uma estratégia de melhoramento genético visando disponibilizar material genético com alto potencial de crescimento, resistência à geada e baixa tensão de crescimento. Para isso foi analisado um teste de progênies instalado em quatro locais com ocorrência de geadas no estado de Santa Catarina, estudou-se variáveis relacionadas a resistência a geadas, produção madeireira e rendimento de madeira em serraria. Os resultados indicaram que com a base genética de E. benthamii estudada é possível disponibilizar sementes geneticamente melhorados para áreas com ocorrência de geadas, com boa produtividade madeireira e rendimentos de madeira em serraria, acima do que se imaginava inicialmente. Para que os ganhos genéticos sejam otimizados foi proposto o zoneamento das áreas estudadas em duas Zonas de Melhoramento - ZM, a ZM1 que compreende as regiões de Caçador-SC, Calmon-SC e Chapecó-SC e a ZM2 que compreende a região de Vargem Bonita-SC

Preparation and mechanical performance of Cf-SiCf-(Al 2

The Cf-SiCf-(Al2O3p)/KGP composites were successfully prepared by the method that mixing a kind of hybrid fiber preform pre-developed and geopolymer resin. The synergistic effects of the hybrid fibers and Al2O3 particles on the composites were investigated. Results show that all the composites showed typical amorphous structure. Mechanical properties of the Cf-SiCf-(Al2O3p)/KGP composites were improved remarkably due to the addition of the hybrid fibers and Al2O3 particles. The flexural strength and Young’s modulus of the Cf-SiCf-(Al2O3p)/KGP composites with 1 mm length SiCf were reached 62.4±2.1 MPa and 24.1±1.6 GPa, respectively. The Cf-SiCf-(Al2O3p)/KGP composites showed non-catastrophic behavior rather than the catastrophic failure