scholarly journals Assessment of the Method of Merging Landing Aircraft Streams in the Context of Fuel Consumption in the Airspace

2021 ◽  
Vol 13 (22) ◽  
pp. 12859
Author(s):  
Anna Kwasiborska ◽  
Jacek Skorupski
Keyword(s):  
Air Pollution ◽  
Fuel Consumption ◽  
Traffic Safety ◽  
Negative Impact ◽  
Waiting Times ◽  
Air Traffic ◽  
Civil Aviation ◽  
Entry Points ◽  
The Impact

The most important directions in the field of sustainable development of air transport concern increasing the capacity of airports and improving the global civil aviation system, improving air traffic safety, and developing procedures to optimize the operation of the aviation system. An important area is environmental protection and measures to minimize the negative impact of civil aviation activities on the environment. Air traffic and the operation of airports generate adverse environmental effects, including greenhouse gas emissions, air pollution, and noise emissions. Due to the high intensity of aircraft maneuvers, the authors analyzed aircraft traffic in the area approaching the airport. It is essential to correctly line up for aircraft reporting from different entry points to the approach area to avoid waiting for landing. Misalignment of landing aircraft negatively impacts airport capacity, increases fuel consumption through more prolonged waiting times in space, and directly impacts air pollution. There are different ways to organize landing aircraft flows and other ways to merge these flows. The article aims to assess the method of combining the streams of landing aircraft and estimate the impact of such an organization on the increased fuel consumption of aircraft and thus on air pollution. The authors proposed a measure for assessing the quality of the landing queue, which was defined as the increase in flight time of aircraft in the approach area in relation to the nominal time, which was adopted as minimization. In order to obtain the results of research works, a model using a Petri net was developed, allowing for flexible mapping of concurrent processes and their effect analysis. Various methods of combining the streams of landing aircraft have been adopted: three-stage, two-stage, and single-stage. Then, simulation experiments were carried out, allowing the determination of whether the method of combining the streams of landing planes has an impact on the quality of the landing queue measured with the proposed index. The obtained results of the assessment can be used to estimate the increased fuel consumption of the aircraft.

scholarly journals The impact of telematics on traffic safety

2021 ◽  
Author(s):  
Igor Jelić ◽  
◽  
Maja Balenović ◽  
Keyword(s):  
Environmental Pollution ◽  
Fuel Consumption ◽  
Traffic Safety ◽  
Traffic Congestion ◽  
Waiting Times ◽  
High Mobility ◽  
Goods And Services ◽  
New Business ◽  
Business Approach ◽  
The Impact

The development of traffic that is conditioned by the high mobility of people, goods and services must be in line with the principles of sustainable development, but it is only possible if the consumption of renewable resources is less than natural renewal opportunities. The future is in implementation of innovative technologies such as telematics systems that offer not only technical solutions but also a new way of life, a new business approach and a new cultural aspect of living for all traffic participants. Advanced telematics solutions such as inflow management and speed limit management greatly help to solve traffic problems, like incidents, environmental pollution, traffic congestion, fuel consumption, etc. Impact of telematics can increase safety but can also introduce new risks for drivers that pose special challenges to traffic psychology and public health. In order to reduce traffic congestion, longer waiting times, environmental pollution, reduce fuel consumption in incident situation various advanced grammatical solutions have been implemented in order to reduce these problems. Telematics, using techniques such as informatics, optoelectronics, automatics and telecommunications, helps to reduce costs of transportation potential management, improves the security and reliability of the transportation service.

scholarly journals Legal aspects of the resolutions determining the acceptable types and quality of fuels under Polish legislation

2019 ◽  
Vol 30 (3) ◽  
pp. 23-28
Author(s):  
Kinga Makuch
Keyword(s):  
Air Pollution ◽  
Quality Improvement ◽  
Air Quality ◽  
Human Health ◽  
Negative Impact ◽  
Legal Aspects ◽  
Local Authorities ◽  
Air Quality Improvement ◽  
The Impact

Abstract The article focuses on the selected aspects of introducing a resolution by a self-government of a province, which allows to determine the acceptable types and quality of fuels. The impact of polluted air on human health is significant. The actions carried out by the local authorities should be aimed on seeking effective air protection remedies; nonetheless, the scale of these activities seems to be still insignificant. One of the legal mechanisms is introducing resolutions determining the acceptable types and quality of fuels by a self-government of a province in order to protect the health of Polish residents and reduce the negative impact of air pollution on the environment. The question, however, is whether such resolutions could be audited with respect to the execution of such a resolution and whether they effectively lead to air quality improvement.

scholarly journals Research on Optimization of Aircraft Climb Trajectory considering Environmental Impact

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Fangzi Liu ◽  
Minghua Hu ◽  
Wenying Lv ◽  
Honghai Zhang
Keyword(s):  
Environmental Impact ◽  
Fuel Consumption ◽  
Traffic Management ◽  
New Technology ◽  
Air Traffic Management ◽  
Air Traffic ◽  
Civil Aviation ◽  
The Sustainable Development ◽  
Theoretical Support ◽  
The Impact

Trajectory-based operation is a new technology that will be developed in the next generation of air traffic management. In order to clarify the optimization space of fuel consumption and emission impact on the environment under the specific operation limitation of air traffic management in the process of aircraft climb, an aircraft climb performance parameter optimization model considering the environmental impact is established. First, the horizontal and vertical climb models are established for the aircraft climb process, and then the optimization objectives are constructed by considering the impact of fuel consumption, exhaust emissions on air temperature, and the convenience of the flight process. Finally, the multiobjective model is solved by genetic algorithm. The B737-800 civil aviation aircraft is selected for simulation experiment to analyze the impact of speed change on the optimization target. The results show that with the change of speed, the fuel consumption and temperature rise are different, and the climb performance parameters of the aircraft are affected by the maximum RTA. By optimizing the flight parameters of the aircraft, it can effectively reduce the impact of flight on the environment and provide theoretical support for the sustainable development of civil aviation.

The Impact of Plateau Airport's Environment on Air Traffic Controller's Situation Awareness

2013 ◽  
Vol 779-780 ◽  
pp. 903-907
Author(s):  
Wei Jun Pan ◽  
Dan Wu ◽  
Na Lu
Keyword(s):  
Situation Awareness ◽  
Traffic Safety ◽  
Air Traffic ◽  
Assessment Methods ◽  
Civil Aviation ◽  
The Core ◽  
Air Traffic Controllers ◽  
Aviation Transportation ◽  
The Impact

The operation of plateau airport is the major problem for the development of China civil aviation transportation. Situation awareness (SA) research is of great importance to the improvement of air traffic controllers training and air traffic safety of plateau airport. First of all, the concept of SA as well as SA assessment methods was introduced in this paper. According to the summation of plateau airport situation, the impact of exposure to plateau environment on controllers SA was analyzed in details. Finally, it reveals what the trend of research on air traffic controllers SA is and what the core problems to be solved are.

scholarly journals Features of the negative impact of modern infrastructure facilities in urbanized areas on the environment

2021 ◽  
Vol 937 (4) ◽  
pp. 042036
Author(s):  
V I Bespalov ◽  
E V Kotlyarova
Keyword(s):  
Air Pollution ◽  
Negative Impact ◽  
Physical Models ◽  
Structural Diagram ◽  
Industrial Facilities ◽  
Urbanized Areas ◽  
Negative Environmental Impact ◽  
Industrial Zones ◽  
The Impact

Abstract In the paper, the authors analyze the impact of modern infrastructure facilities in urbanized areas on the quality of the environment. The first stage of the study was to consider the changes in the urban environment of recent decades, which consists in the transformation of many former industrial zones into large objects of a cultural and entertainment nature, namely shopping and entertainment centers (SEC) or complexes (SECo). The authors also pay special attention to the description of the structural diagram of typical SEC or SECo, the main sources of negative environmental impact from them, as well as directly to the types of these impacts. The analysis carried out confirmed that it would be wrong to say that the quality of the environment in urbanized areas has improved due to the replacement of industrial facilities within cities with SEC or SECo. The authors consider the further task of scientific research to be the process of constructing physical models of pollution processes and reducing air pollution for individual sources for the purpose of subsequent analysis and highlighting promising directions (methods and options) for implementing a system for combating pollution.

Workload Perception of Air Traffic Control Officers and Pilots During Continuous Descent Operations Approach Procedures

2019 ◽  
Vol 9 (1) ◽  
pp. 2-11
Author(s):  
Marina Efthymiou ◽  
Frank Fichert ◽  
Olaf Lantzsch
Keyword(s):  
Fuel Consumption ◽  
Traffic Control ◽  
Air Traffic Control ◽  
Negative Impact ◽  
Air Traffic ◽  
Reduce Fuel Consumption ◽  
Total Load ◽  
Open Path

Abstract. The paper examines the workload perceived by air traffic control officers (ATCOs) and pilots during continuous descent operations (CDOs), applying closed- and open-path procedures. CDOs reduce fuel consumption and noise emissions. Therefore, they are supported by airports as well as airlines. However, their use often depends on pilots asking for CDOs and controllers giving approval and directions. An adapted NASA Total Load Index (TLX) was used to measure the workload perception of ATCOs and pilots when applying CDOs at selected European airports. The main finding is that ATCOs’ workload increased when giving both closed- and open-path CDOs, which may have a negative impact on their willingness to apply CDOs. The main problem reported by pilots was insufficient distance-to-go information provided by ATCOs. The workload change is important when considering the use of CDOs.

Green Beans Cultivation Using Mice Pets Control to Improve the Quality of Bintaro Fruit Extract

2018 ◽  
Vol 1 (1) ◽  
pp. 38
Author(s):  
Ajeng Embri Legawati ◽  
Nur Azizah ◽  
Achmad Ramadhan
Keyword(s):  
Natural Resources ◽  
Negative Impact ◽  
Green Beans ◽  
Fruit Extract ◽  
Bean Plants ◽  
Cultivation Technology ◽  
Environmental Balance ◽  
The Impact ◽  
Chemical Pesticides

Green beans cultivation technology using mice pets control has been implemented in the Gluranploso village, Benjeng Gresik. The implementation of the technology performed for 2.5 months from August to October 2017. The purpose of the implementation is aimed to reduce the dependence of farmers on the use of chemical pesticides so that the farmers are aware of the negative impact of chemical pesticides. Assessing the impact of the utilization of Bintaro fruit and fruit extracts to explore ways of making Bintaro as a natural biopesticide to overcome rat attack on green bean plants in the Gluranploso village. Pest control mice can reduce the rate of loss of the crops more effectively and efficiently. Finally, with the use of those natural resources as a biopesticide material can also maintain the environmental balance

scholarly journals The Influence of Urban Sprawl on Air Pollution and the Mediating Effect of Vehicle Ownership

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1261
Author(s):  
Aiping Tao ◽  
Qun Liang ◽  
Peng Kuai ◽  
Tao Ding
Keyword(s):  
Air Pollution ◽  
Urban Sprawl ◽  
Negative Impact ◽  
Empirical Support ◽  
Mediating Effect ◽  
Vehicle Ownership ◽  
Mediating Role ◽  
Effect Model ◽  
Significant Negative Impact ◽  
The Impact

Based on the panel data of 224 prefecture-level and above cities in China from 2003 to 2016, this paper empirically studies the impact of urban sprawl on air pollution and introduces a mediating effect model to test the mediating role of vehicle ownership concerning the impact of urban sprawl on air pollution. The research in this paper arrives at three conclusions. First, urban sprawl has a significant positive effect on air pollution, and this conclusion is still valid after solving the endogeneity problem and conducting a robustness test. Second, the results of mediating effect test show that urban sprawl indirectly affects air pollution through the partial mediating effect of vehicle ownership. By removing the mediating effect, urban sprawl has a significant negative impact on air pollution, indicating that the mediating effect of vehicle ownership is higher concerning the impact of urban sprawl on air pollution. Third, further panel quantile regression results show that the higher the level of air pollution, the weaker the mediating effect of vehicle ownership and the stronger the direct effect of urban sprawl on air pollution. These conclusions can provide some empirical support for solving the air pollution problems caused by urban sprawl in China.

scholarly journals COVID-19 Pandemic and Quality of Life among Romanian Athletes

2021 ◽  
Vol 18 (8) ◽  
pp. 4065
Author(s):  
Germina-Alina Cosma ◽  
Alina Chiracu ◽  
Amalia Raluca Stepan ◽  
Marian Alexandru Cosma ◽  
Marian Costin Nanu ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Trait Anxiety ◽  
Negative Impact ◽  
Well Being ◽  
Quality Of Life Scale ◽  
Life Scale ◽  
Personality Item ◽  
The Impact ◽  
The Relationship

The aim of this study was to analyze athletes’ quality of life during the COVID-19 pandemic. The study involved 249 athletes between 15 and 35 of age, M = 21.22, SD = 5.12. The sample was composed of eight Olympic Games medalists, three European medalists, 67 international medalists, and 63 national medalists. The instruments used were: (1) COVID-19 Anxiety Scale, (2) Athlete Quality of Life Scale, (3) Impact of Pandemic on Athletes Questionnaire, and (4) International Personality Item Pool (IPIP Anxiety, Depression, and Vulnerability Scales). The results indicate significant differences in COVID-19 anxiety depending on the sport practiced, F (9239) = 3.81, p < 0.01, showing that there were significant differences between sports. The negative impact of the COVID-19 pandemic mediates the relationship between trait anxiety and the athletes’ quality of life. The percentage of mediation was 33.9%, and the indirect effect was −0.11, CI 95% (−0.18, −0.03), Z = −2.82, p < 0.01. Trait anxiety has an increasing effect on the intensity of the negative impact of the COVID-19 pandemic, 0.23, CI 95% (.10, 0.35), Z = 3.56, p < 0.01, and the negative impact of the COVID-19 pandemic has a decreasing effect on quality of life, −0.47, CI 95% (−0.67, −0.27), Z = −4.62, p < 0.01. Gender and age did not moderate the relationship between the negative impact of COVID-19 and athletes’ quality of life. The results of the study highlighted the impact that social isolation and quarantine have on athletes’ affective well-being.

scholarly journals Threat or Corrective? Assessing the Impact of Populist Parties in Government on the Qualities of Democracy: A 19-Country Comparison

2021 ◽  
pp. 1-21
Author(s):  
Davide Vittori
Keyword(s):  
Negative Impact ◽  
Quality Of Democracy ◽  
Clear Cut ◽  
Liberal Democratic ◽  
Country Comparison ◽  
Democratic Regimes ◽  
Different Types ◽  
The Impact

Abstract Scholars have long debated whether populism harms or improves the quality of democracy. This article contributes to this debate by focusing on the impact of populist parties in government. In particular, it inquires: (1) whether populists in government are more likely than non-populists to negatively affect the quality of democracies; (2) whether the role of populists in government matters; and (3) which type of populism is expected to negatively affect the quality of liberal-democratic regimes. The results find strong evidence that the role of populists in government affects several qualities of democracy. While robust, the findings related to (2) are less clear-cut than those pertaining to (1). Finally, regardless of their role in government, different types of populism have different impacts on the qualities of democracy. The results show that exclusionary populist parties in government tend to have more of a negative impact than other forms of populism.

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