scholarly journals Aphid–Plant–Phytovirus Pathosystems: Influencing Factors from Vector Behaviour to Virus Spread

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 502
Author(s):  
Junior Corneille Fingu-Mabola ◽  
Frédéric Francis
Keyword(s):  
Influencing Factors ◽  
Virus Transmission ◽  
Physical Factors ◽  
Factors Affecting ◽  
Vector Borne Diseases ◽  
Vector Behaviour ◽  
Crop Fields ◽  
Host Seeking ◽  
The Impact ◽  
Vector Efficiency

Aphids are responsible for the spread of more than half of the known phytovirus species. Virus transmission within the plant–aphid–phytovirus pathosystem depends on vector mobility which allows the aphid to reach its host plant and on vector efficiency in terms of ability to transmit phytoviruses. However, several other factors can influence the phytoviruses transmission process and have significant epidemiological consequences. In this review, we aimed to analyse the aphid behaviours and influencing factors affecting phytovirus spread. We discussed the impact of vector host-seeking and dispersal behaviours mostly involved in aphid-born phytovirus spread but also the effect of feeding behaviours and life history traits involved in plant–aphid–phytovirus relationships on vector performances. We also noted that these behaviours are influenced by factors inherent to the interactions between pathosystem components (mode of transmission of phytoviruses, vector efficiency, plant resistance, …) and several biological, biochemical, chemical or physical factors related to the environment of these pathosystem components, most of them being manipulated as means to control vector-borne diseases in the crop fields.

scholarly journals Environmental Factors Causing the Development of Microorganisms on the Surfaces of National Cultural Monuments Made of Mineral Building Materials—Review

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1203
Author(s):  
Elżbieta Stanaszek-Tomal
Keyword(s):  
Environmental Factors ◽  
Building Materials ◽  
Ion Concentration ◽  
Physical Factors ◽  
Comprehensive Overview ◽  
Hydrogen Ion Concentration ◽  
Factors Affecting ◽  
Stone Concrete ◽  
The Impact ◽  
Cultural Monuments

The ability of microorganisms to degrade building materials depends on several factors. Biological corrosion occurs in close dependence with chemical and physical factors affecting microorganisms. The growth and development of microorganisms is stimulated by external stimuli, i.e., environmental factors. Microorganisms have a relatively large tolerance range for changes in environmental conditions. Under the right conditions, microorganisms thrive very well. The adverse effects may cause the inhibition of cell growth, damage, or lead to the death of the microorganism. Considering the impact of environmental factors on microorganisms, it is not possible to identify the most important of them. The result effect of overlapping factors determines the possibility of the growth of certain microorganisms. The main factors affecting the growth are temperature, humidity, hydrogen ion concentration in the environment, oxidoreductive potential, water activity in the environment, and hydrostatic pressure. This article provides a comprehensive overview of the factors causing biodeterioration. The influence of external/internal environment on the surface of cultural monuments made of mineral building materials, i.e., stone, concrete, mortar, etc., is presented.

The Impact of Factors in Job Satisfaction Towards Employees’ Intention to Leave in Chain Hotels

2015 ◽  
Vol 21 (4) ◽  
pp. 714-718
Author(s):  
Marion Hutagalung ◽  
Tatum Syarifah Adiningrum
Keyword(s):  
Job Satisfaction ◽  
Work Environment ◽  
Influencing Factors ◽  
Employee Turnover ◽  
Turnover Rate ◽  
Intention To Leave ◽  
Factors Affecting ◽  
Job Promotion ◽  
The Impact ◽  
The Relationship

Employee turnover is an expensive cost in the management of any venture. The objective of this paper is to examine the relationship between factors of job satisfaction to employee intention to leave at Arion Swiss Belhotel in Jakarta and Bandung. The survey was conducted to 240 employees in nine departments in both hotels, using a questionnaire adapting JDI. Findings indicated that the highest influencing factors affecting employees’ turnover was the work environment, followed by pay, and opportunity for job promotion. There is no difference between employees in both hotels in their perception towards each of the variables; as well there is no difference between layers of management. The overall finding results can be used for the hotels to set the guidelines to improve the employees’ job satisfaction and reducing the turnover rate.

scholarly journals Effects of the Environmental Temperature on Aedes aegypti and Aedes albopictus Mosquitoes: A Review

Insects ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 158 ◽  
Author(s):  
Joanna Reinhold ◽  
Claudio Lazzari ◽  
Chloé Lahondère
Keyword(s):  
Climate Change ◽  
Environmental Temperature ◽  
Current Knowledge ◽  
Abiotic Factors ◽  
Potential Effect ◽  
Health Concern ◽  
Factors Affecting ◽  
Host Seeking ◽  
Seeking Behavior ◽  
The Impact

The temperature of the environment is one of the most important abiotic factors affecting the life of insects. As poikilotherms, their body temperature is not constant, and they rely on various strategies to minimize the risk of thermal stress. They have been thus able to colonize a large spectrum of habitats. Mosquitoes, such as Ae. aegypti and Ae. albopictus, vector many pathogens, including dengue, chikungunya, and Zika viruses. The spread of these diseases has become a major global health concern, and it is predicted that climate change will affect the mosquitoes’ distribution, which will allow these insects to bring new pathogens to naïve populations. We synthesize here the current knowledge on the impact of temperature on the mosquito flight activity and host-seeking behavior (1); ecology and dispersion (2); as well as its potential effect on the pathogens themselves and how climate can affect the transmission of some of these pathogens (3).

scholarly journals Environmental Factors Contribute to the Transmissibility of COVID-19: Evidence from an Improved SEIR Model

2021 ◽  
Author(s):  
Jie Li ◽  
Kun Jia ◽  
Wenwu Zhao ◽  
Bo Yuan ◽  
Yanxu Liu
Keyword(s):  
Environmental Factors ◽  
Pearson Correlation ◽  
Time Lag ◽  
Virus Transmission ◽  
Ecological Factors ◽  
Population Mobility ◽  
Seir Model ◽  
Factors Affecting ◽  
Distributed Lag ◽  
The Impact

Abstract COVID-19 is ravaging Brazil, and its spread shows spatial heterogeneity. Changes in the environment have been implicated as potential factors involved in COVID-19 transmission. However, considerable research efforts have not elucidated the risk of environmental factors on COVID-19 transmission from the perspective of infectious disease dynamics. The aim of this study is to model the influence of the environment on COVID-19 transmission and to analyze how the socio-ecological factors affecting the probability of virus transmission in 10 states dramatically shifted during the early stages of the epidemic in Brazil. First, this study used a Pearson correlation to analyze the interconnection between COVID-19 morbidity and socio-ecological factors, and identified factors with significant correlations as the dominant factors affecting COVID-19 transmission. Then, the time-lag effect of dominant factors on the morbidity of COVID-19 was investigated by constructing a distributed lag nonlinear model, and the results were considered to be an improvement over the SEIR model. Lastly, a machine learning method was introduced to explore the nonlinear relationship between the environmental propagation probability and socio-ecological factors. By analyzing the impact of environmental factors on virus transmission, it can be found that population mobility directly caused by human activities had a greater impact on virus transmission than temperature and humidity. The heterogeneity of meteorological factors can be accounted for by the diverse climate patterns in Brazil. The improved SEIR model was adopted to explore the interconnection of COVID-19 transmission and the environment, which revealed a new strategy to probe the causal links between them.

scholarly journals Dengue arbovirus affecting temperate Argentina province for more than a decade 2009-2020

2020 ◽  
Author(s):  
María S. López ◽  
Daniela I. Jordan ◽  
Evelyn Blatter ◽  
Elisabet Walker ◽  
Andrea A. Gómez ◽  
...  
Keyword(s):  
Virus Transmission ◽  
Santa Fe ◽  
Future Studies ◽  
Dengue Disease ◽  
Vector Borne Diseases ◽  
Factors Associated ◽  
Dengue Transmission ◽  
Vector Borne ◽  
Spatio Temporal ◽  
The Impact

Dengue disease is found in tropical and subtropical climates and within the last decade it has extended to temperate regions. Santa Fe, a temperate province in Argentina, has experienced an increase in dengue cases and virus circulation in the last decade, with the recent 2020 outbreak being the largest since dengue transmission was first reported in the province in 2009. The aim of this work is to perform a description of spatio-temporal fluctuations of dengue (DENV) cases from 2009 to the present in Santa Fe province. The data presented in this work provide a detailed description of dengue virus transmission for Santa Fe province by department. This information is useful to assist in better understanding the impact of ongoing dengue emergence in temperate regions across the world. Indeed, this work provides data useful for future studies including those investigating socio-ecological, climate, and environmental factors associated with dengue transmission, as well as those investigating other variables related to the biology and the ecology of vector-borne diseases.

Influencing Factors of Virtual Cigarettes online game Consumers1 Co-production Behavior

2021 ◽  
Vol 7 (5) ◽  
pp. 3035-3056
Author(s):  
Xiaobo Fang ◽  
Jieyu Song ◽  
Liyan Liu ◽  
Minoo Ghoreishi
Keyword(s):  
Influencing Factors ◽  
Online Survey ◽  
Online Games ◽  
Product Evaluation ◽  
Customer Participation ◽  
Online Game ◽  
Factors Affecting ◽  
Professional Information ◽  
Game Developers ◽  
The Impact

Purpose-This study aims to explore the influencing factors of customer participation in co-production and the impact of co-production on consumer product evaluation and behavioral loyalty. Design/methodology/approach – An online survey was used to collect 325 valid questionnaires from consumers who reported participating in online game public testing and played many virtual cigarettes online games with more than 6-months experience. Findings – Consumers who are willing to participate in co-production often share specific characteristics, including a high desire to control, a high motivation to achieve, and professional knowledge. When Consumers concentrate on co-production, they may leave positive product evaluations of virtual cigarettes online games, and increase behaviors that demonstrate loyalty. Practical implications –Virtual cigarettes online game developers can be involved by these results when provide relevant professional information in game public testing, because they suggest that consumers who are willing to participate in co-production often share specific characteristics. Originality/value – From the viewpoints of the consumer link, product link, and situational link, this paper summarized the link variables, and analysed the key factors affecting consumers’ input into co-production.

The Analysis of Factors Affecting Consumer Mobile Shopping

2014 ◽  
Vol 912-914 ◽  
pp. 1432-1435 ◽  
Author(s):  
Yin Yin Wang
Keyword(s):  
Marketing Strategy ◽  
Influencing Factors ◽  
Rapid Development ◽  
Mobile Internet ◽  
Shopping Behavior ◽  
The Internet ◽  
Factors Affecting ◽  
The Road ◽  
Mobile Shopping ◽  
The Impact

With the rapid development of the Internet and handle devices rapidly growing popularity, especially 3G / 4G network continues to develop, making the mobile shopping. Mobile Internet and other services are no longer out of reach. Enterprises in order to provide consumers with a better service must proceed from the perspective of consumers. Their double clear consumer mobile shopping and influencing factors have factors on the impact of consumers. Using mobile shopping can develop effective marketing strategy, and actively seeking to develop the road, so as to continuously promote the development of mobile shopping. This paper analyzes the characteristics of mobile shopping behavior of consumers, identifies the factors affecting consumer mobile shopping, and concludes with recommendations for the development of mobile shopping.

scholarly journals WORK ACCELERATION STRATEGY DEVELOPMENT ON DESIGN-BUILD PROJECT TO IMPROVE RISK BASED QUALITY PERFORMANCE

2020 ◽  
pp. 10-15
Author(s):  
DITA AYUNINGTYAS ◽  
AYOMI DITA RARASATI
Keyword(s):  
Social Economy ◽  
Project Work ◽  
Strategy Development ◽  
Physical Factors ◽  
Literature Study ◽  
Quality Performance ◽  
Factors Affecting ◽  
Project Outcome ◽  
Design Build ◽  
The Impact

Design-build method has become a more popular procurement method in Indonesia. This method differs from other conventional procurement methods because the design and construction is one entity. All responsibilities are taken over by contractors so that the project outcome expected becomes more comprehensive. Design -build applies fast-track system. The work acceleration implemented during the construction will potentially generate risks on the performance, in this case quality performance. The implementation of risk management is expected to significantly reduce the impact of the risk on the quality performance of a project. The objective of this study is to analyze risks (the frequency and the impact) by identifying factors affecting the success of work acceleration, and thus work acceleration strategy can be developed for design-build project in order to improve risk based quality. This study is a qualitative research with literature study on factors of risks affecting quality performance and questioners given to experts and respondents who are experienced in design-build procurement. Risk factors analyzed in this study are competence of project owner, team leader, and project manager, planning and execution ability, procurement process, scope and nature of the project, work relationship among project teams, project owner’s information, physical factors, and social economy environment. The result of this study is work acceleration strategy on design-build project in order to improve risk based quality performance.

Physical factors affecting the impact strength of polycarbonate

1982 ◽  
Vol 17 (1) ◽  
pp. 199-203 ◽  
Author(s):  
J. A. Zurimendi ◽  
F. Biddlestone ◽  
J. N. Hay ◽  
R. N. Haward
Keyword(s):  
Impact Strength ◽  
Physical Factors ◽  
Factors Affecting ◽  
The Impact

scholarly journals Radon Over Kimberlite Pipes: Estimation of the Emanation Properties of Rocks (Lomonosov Diamond Deposit, NW Russia)

2021 ◽  
Vol 11 (13) ◽  
pp. 6065
Author(s):  
Evgeny Yakovlev ◽  
Andrey Puchkov
Keyword(s):  
Experimental Studies ◽  
State Level ◽  
The Body ◽  
Free State ◽  
Physical Factors ◽  
Diamond Deposit ◽  
Factors Affecting ◽  
Emanation Coefficient ◽  
Host Rocks ◽  
The Impact

In this paper, using the example of the Lomonosov diamond deposit, experimental studies of rocks were carried out to assess the main radiation and physical factors affecting the formation of the radon field over the kimberlite pipes of the Arkhangelsk diamondiferous province. For various types of rocks, represented by vent kimberlites, tuffaceous-sedimentary rocks of the crater and enclosing and overlying sediments, the following were studied: porosity, density, activity of radium-226, activity of radon in a free state, level of radon production, and emanation coefficient. The research results showed that the greatest amount of radon in a free state is produced by rocks of the near-pipe space, represented by the enclosing Vendian V2 deposits and characterized by high values of the emanation coefficient, radium activity, radon production level and porosity. This fact is associated with the structural and geological features of the near-pipe space, which was exposed to the impact of kimberlite magma on the host rocks. The lowest values of these parameters are characteristic of the kimberlites of the vent facies, which limits the formation of free radon in the body of the pipe. The results of the experimental studies create prospects for the development of emanation methods for searching for kimberlite pipes in the conditions of the Arkhangelsk diamondiferous province.

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