scholarly journals Dynamic Model of Contingency Flight Crew Planning Extending to Crew Formation

Mathematics ◽  
2021 ◽  
Vol 9 (17) ◽  
pp. 2138
Author(s):  
Vojtech Graf ◽  
Dusan Teichmann ◽  
Michal Dorda ◽  
Lenka Kontrikova
Keyword(s):  
Planning Process ◽  
Flight Crew ◽  
Control Center ◽  
Software Products ◽  
Operational Solution ◽  
Crew Planning ◽  
Financial Impacts ◽  
Air Carriers ◽  
Standard Situation ◽  
Financial Losses

The creation of a flight schedule and the associated crew planning are clearly among the most complicated tasks in terms of traffic preparation. Even with a relatively small number of pilots and aircraft, numerous specific constraints arising from real operations must be included in the calculation, thus increasing the complexity of the planning process. However, even in a precision-planned operation, non-standard situations often occur, which must be addressed flexibly. It is at this point that an operational solution must be applied, the aims of which are to stabilize the flight schedule as soon as possible and minimize the financial impacts resulting from the non-standard situation. These problems are resolved by the airline’s Operational Control Center, which also uses various software approaches to solve the problem. The problem is approached differently by large air carriers, which use software products to address it, and small and medium-sized air carriers, which resolve the issue of operational rescheduling intuitively, based on the experience of dispatchers. However, this intuitive approach can lead to inaccuracies that can lead to unnecessary financial losses. In this paper, we present an optimization model that can serve as a tool to support the decision-making of employees of the operations centers of smaller and medium-sized air carriers.

Использование программного обеспечения  для оптимизации работы Центральной диспетчерской службы

2020 ◽  
Author(s):  
Viktor, Solov’ev ◽  
M. Arbuzov ◽  
N. Lesnykh
Keyword(s):  
Entire Period ◽  
Control Center ◽  
Software Products ◽  
Self Development ◽  
Operations Control ◽  
Water And Wastewater

Представлен обзор программных продуктов, разработанных группой специалистов различных служб и отделов ООО Водоканал г. Новокузнецка. Более 10 лет персонал Центральной диспетчерской службы предприятия использует данное программное обеспечение в своей работе. Разработка и применение собственных программ позволяет вносить необходимые коррективы в течение всего периода их использования, что обеспечивает максимальную простоту и удобство для работы пользователей. Рассмотрен порядок работы с несколькими программами: приведены виды окон, отображаемых на мониторе пользователя отражена пошаговая последовательность работы диспетчера с программой указаны дополнительные функции программ, позволяющие оптимизировать отдельные производственные процессы деятельности персонала диспетчеров. На основе представленных материалов возможно создание собственных аналогичных продуктов с учетом индивидуальной специфики предприятий водопроводно-канализационного хозяйства. Работа в этом направлении позволит гарантированно оптимизировать работу персонала диспетчерской и других служб, процессы взаимодействия различных подразделений внутри предприятия, а также предприятия с потребителями.A review of software products developed by a group of specialists from various services and departments of Vodokanal LLC, in Novokuznetsk is presented. For more than 10 years, the staff of the operations control center of the enterprise has been using this software in their work. The development and application of self-developed software provides for making the necessary adjustments throughout the entire period of its use to ensure maximum simplicity and friendliness for users. The procedure of using several software products is considered: the types of windows displayed on the users monitor are given the step-by-step sequence of the operational managers work with the software is reflected additional functions of the software are indicated that allow upgrading separate actions of the personnel of the operations control center. On the basis of the information presented self-development of similar software is possible provided the specific features of water and wastewater utilities are considered. Further research in this direction will allow reliable upgrading the activities of the personnel of the operations control center and other services, improving the interaction of various departments within the enterprise, as well as the consumer relations.

DECISION-MAKING SYSTEM WITHIN THE FRAMEWORK OF THE GLONASS CONCEPT FOR TRACKING OBJECTS IN THE CONTROL ZONE

2017 ◽  
pp. 88-97
Author(s):  
Magomed Yaragievich Pashaev
Keyword(s):  
Decision Making ◽  
Information Technologies ◽  
Navigation Systems ◽  
Logistics System ◽  
Control Zone ◽  
Control Center ◽  
Decision Making System ◽  
Passport Data ◽  
Changes Over Time ◽  
Standard Situation

The author of the paper analyzes the problem of constructing a subsystem of decision support within the transport logistics system. The subsystem is based on the new concept of using navigation systems, which, in contrast to the existing concepts, not only registers facts of violation of the regulations about storing and transporting goods, but also prevents malicious acts in relation to the handled goods. To unify decision-making procedures, there is offered a general format of typical patterns of decision-making situations, including the following sections: type of non-standard situation; territorial-and-spatial characteristics of non-standard situation; description of non-standard situation; passport data of the sources providing information about non-standard situation; specific parameters and characteristics of non-standard situation; registering andnon-standard situation changes over time; statistical data on each non-standard situation. The author gave a complete disclosure and detailed analysis of each section and offered a general algorithm for the decision-making process within GLONASS system for delivering logistics services, which should be placed in the control center of the transportation company providing freight services. According to the analysis of the algorithm, there has been formed a list of information technologies advisable to use in GLONASS system for providing services.

scholarly journals PLANNING OF THE AMOUNT OF TRAINS NEEDED FOR TRANSPORTATION BY RAIL

Transport ◽  
2007 ◽  
Vol 22 (2) ◽  
pp. 83-89 ◽  
Author(s):  
Jonas Jonaitis
Keyword(s):  
Planning Process ◽  
Rolling Stock ◽  
Maximum Efficiency ◽  
Repair Costs ◽  
Operational Characteristics ◽  
Optimal Service ◽  
Railway Planning ◽  
Key Factor ◽  
Crew Planning ◽  
Planning Problems

The article analyses the importance of planning process of rail transportation. Railway planning problems are presented in this paper. Planning the railways for years, months, weeks or days ahead leads to substantially different problems; in this regard railway planning problems can be strategic, tactical, operational and short‐term. Another way to classify railway planning problems is based on their target: they concern the timetable, the rolling stock and the crew. Planning the structure and volume of the rolling stock is a key factor in achieving maximum efficiency of transportation by rail as well as forecasting the demand for these transport facilities. The demand for trains is a time‐dependant variable which in each case should be determined by two main approaches. The first method allows us to determine quantitative parameters of rolling stock (i.e. kilometers logged, efficiency, turnover, etc.). The second is based on specially developed mathematical models relying on qualitative characteristics such as relative expenses, efficiency of the particular train, relative expenditure of resources, cost of the trains, etc. Planning the volume of the rolling stock the determination of optimal service life of the trains plays an important role. The calculations involve repair costs, number of overhauls, current expenses and operational characteristics.

scholarly journals A Strategic Variance Analysis of the Profitability of U.S. Network Air Carriers

2011 ◽  
Author(s):  
Paul Caster ◽  
Carl A. Scheraga
Keyword(s):  
Product Differentiation ◽  
Planning Process ◽  
Low Cost ◽  
Variance Analysis ◽  
Operating Income ◽  
Cost Leadership ◽  
Differentiation Strategy ◽  
Cost Strategy ◽  
Low Cost Strategy ◽  
Air Carriers

Airlines, as part of their strategic planning process, articulate positions with regard to cost leadership, product differentiation, and growth. Decisions implemented are dynamic and inter-temporal in nature. Therefore, it is often difficult to assess the effectiveness of changes in strategies, particularly since such effectiveness is often a function of the confounding forces of organizational strategy and market conditions. Managers thus need a multi-period methodology to evaluate the implementation of strategic positions. One such approach is the strategic variance analysis of operating income. Horngren et al. (2000, 2006, 2012) demonstrate a methodological template for decomposing operating income into three components: (1) growth, (2) price recovery, and (3) productivity. It is suggested that the price recovery component assesses a firm’s product differentiation strategy and that the productivity component assesses a firm’s low-cost strategy. Thus, this framework is very much in the spirit of Porter’s (1980) seminal work.This study examines U.S. network airlines in the post-9/11 environment. Utilizing the above methodology, it first identifies comparative strategic positions across airlines and then assesses the implementation efficacy of these positions.

PHILOSOPHICAL BLUNDERS WITHIN THE CARICOM AVIATION INDUSTRY

2017 ◽  
Vol 8 (2) ◽  
pp. 134-147
Author(s):  
Vaman Bajnath
Keyword(s):  
Air Transport ◽  
Aviation Industry ◽  
Caribbean Community ◽  
Collective Effort ◽  
Air Transport Industry ◽  
The Caribbean ◽  
Service Agreement ◽  
State Of Affairs ◽  
Air Carriers ◽  
Financial Losses

The worsening state of affairs in the Caribbean Community (Caricom) aviation industry is undeserved. Philosophical blunders perpetuate the foremost regional state air carriers. The Regulatory Authorities lack the leadership zest to drive change. There is urgent need to revisit the 1996 Multilateral Air Service Agreement (MASA) and re-engage Caricom Governments, State Air Carriers, and Regulatory Aviation Authorities to relight the region’s aviation industry vision. Leaders must focus their collective effort towards a viable and dependable air transport industry infrastructure. The leadership miscalculations are causing weighty financial losses while adding to the air network deterioration.

scholarly journals RANCANG BANGUN SISTEM OTOMATIS DAN MONITORING JARAK JAUH ENGINEERING WORK STATION DI PLTU VIA WEB

KOMPUTEK ◽  
2020 ◽  
Vol 4 (2) ◽  
pp. 19
Author(s):  
Suryanto Suryanto ◽  
Edy Kurniawan
Keyword(s):  
Room Temperature ◽  
Planning Process ◽  
Literature Study ◽  
Technical Data ◽  
Control Center ◽  
Work Station ◽  
Ac Motor ◽  
Engineering Work ◽  
Process Manufacturing ◽  
Manufacturing Testing

The engineering work station room is a server room that has a function to be the control center for all components in the PLTU which will have to be equipped with several sensors, namely the DHT11 temperature sensor, ZMPT101 voltage sensor, ACS712 current sensor to help keep temperature, voltage, current stable . To obtain maximum results, several stages are needed in designing this tool, including literature study, technical data collection, planning process, manufacturing, testing, discussion and conclusions.To maintain the conditions in the engineering work station room, an automatic system and remote monitoring were designed which have a working principle, namely if the temperature in the EWS room is below 18C then the AC motor is off. If the EWS room temperature is at 18C - 23C, the AC motor has a medium start. If the EWS room temperature is above 23C, the AC motor has full power. Meanwhile, the results of reading conditions in the EWS room, namely the conditions of temperature, voltage, and current will be displayed via the Thingspeak web. The results of this study the tool is able to work according to predetermined working principles and data analysis is also in accordance with existing calculations

Rice Fortified with Iron Given Weekly Increases Hemoglobin Levels and Reduces Anemia in Infants: a Community Intervention Trial

2013 ◽  
Vol 83 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Francisco Plácido Nogueira Arcanjo ◽  
Paulo Roberto Santos ◽  
Álvaro Jorge Madeiro Leite ◽  
Francisco Sulivan Bastos Mota ◽  
Sérgio Duarte Segall
Keyword(s):  
Community Intervention ◽  
Capillary Blood ◽  
Number Needed To Treat ◽  
Intervention Trial ◽  
Day Care Centers ◽  
Control Center ◽  
Ferric Pyrophosphate ◽  
Child Day Care ◽  
Child Day Care Centers ◽  
The Impact

More than two billion people suffer from anemia worldwide, and it is estimated that more than 50 % of cases are caused by iron deficiency. In this community intervention trial, we evaluated infants aged 10 to 23 months of age (n = 171) from two public child day-care centers. Intervention lasted 18 weeks. The 50-g individual portion (uncooked) of fortified rice provided 56.4 mg of elemental iron as ferric pyrophosphate. Capillary blood samples to test for anemia were taken at baseline and at endpoint. The objective of this study was to evaluate the impact of rice fortified with iron (Ultrarice®) on hemoglobin and anemia prevalence compared with standard household rice. For the fortified rice center, baseline mean hemoglobin was 113.7 ± 9.2 g/L, and at endpoint 119.5 ± 7.7 g/L, p < 0.0001; for the standard rice center, baseline mean hemoglobin value was 113.5 ± 40.7 g/L, and at endpoint 113.6 ± 21.0, p = 0.99. Anemia prevalence for the fortified rice center was 27.8 % (20/72) at baseline, and 11.1 % (8/72) at endpoint, p = 0.012; for the control center, 47.1 % (33/70) were anemic at baseline, and 37.1 % (26/70) at the end of the study, p = 0.23. The Number Needed to Treat (NNT) was 4. In this intervention, rice fortified with iron given weekly was effective in increasing hemoglobin levels and reducing anemia in infants.

Asiana Airlines Flight 214

2014 ◽  
Vol 4 (2) ◽  
pp. 113-121 ◽  
Author(s):  
Stephanie Chow ◽  
Stephen Yortsos ◽  
Najmedin Meshkati
Keyword(s):  
Human Factors ◽  
Aviation Safety ◽  
Cultural Factors ◽  
Vital Role ◽  
Cultural Issues ◽  
Flight Crew ◽  
Pilot Performance ◽  
Engineering Designs ◽  
Flight Deck

This article focuses on a major human factors–related issue that includes the undeniable role of cultural factors and cockpit automation and their serious impact on flight crew performance, communication, and aviation safety. The report concentrates on the flight crew performance of the Boeing 777–Asiana Airlines Flight 214 accident, by exploring issues concerning mode confusion and autothrottle systems. It also further reviews the vital role of cultural factors in aviation safety and provides a brief overview of past, related accidents. Automation progressions have been created in an attempt to design an error-free flight deck. However, to do that, the pilot must still thoroughly understand every component of the flight deck – most importantly, the automation. Otherwise, if pilots are not completely competent in terms of their automation, the slightest errors can lead to fatal accidents. As seen in the case of Asiana Flight 214, even though engineering designs and pilot training have greatly evolved over the years, there are many cultural, design, and communication factors that affect pilot performance. It is concluded that aviation systems designers, in cooperation with pilots and regulatory bodies, should lead the strategic effort of systematically addressing the serious issues of cockpit automation, human factors, and cultural issues, including their interactions, which will certainly lead to better solutions for safer flights.

Command and Control

2018 ◽  
Vol 8 (1) ◽  
pp. 1-10
Author(s):  
Stuart D. H. Beveridge ◽  
Simon T. Henderson ◽  
Wayne L. Martin ◽  
Joleah B. Lamb
Keyword(s):  
Air Transport ◽  
Flight Safety ◽  
Flight Crew ◽  
Systematic Review Methodology ◽  
Role Assignment ◽  
Performance Factors ◽  
Policy Review ◽  
Reported Effect ◽  
And Control ◽  
Research And Policy

Abstract. Compared with other team settings, flight crew in air transport present a unique situation where the leader or supervisor regularly engages in active control. When the captain is assigned cognitively demanding pilot flying duties, the subordinate and often less experienced first officer must perform equally crucial monitoring and support duties. Using a systematic review methodology, this study reviews the reported effect of crew role assignment on flight safety outcomes. Our review identified 18 relevant studies and suggests crew performance factors linked to flight safety are affected by crew role assignment. Findings suggest a greater number of inherent obstacles may exist for optimal crew performance with the captain as pilot flying, raising the need for further specific research and policy review in this area.

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