A Organização Mundial da Saúde (OMS) considera que os transtornos mentais menores, que incluem depressão e ansiedade, afetam aproximadamente 30% dos trabalhadores. Objetivo: Verificar a freqüência, e a taxa de prevalência de transtornos mentais entre Comissários de Bordo afastados das atividades profissionais. Métodos: Foram analisados os prontuários de 648 comissários de bordo, 105 homens e 543 mulheres, que realizaram perícia durante um período de cinco anos e receberam como parecer de afastamento pelo menos um diagnóstico do agrupamento F00-F99 da CID- 10, associado ou não a doença ou transtorno orgânico. Resultados: Comissários de Bordo ingressam cedo no mercado de trabalho (50,5 por cento dos homens e 70,5 por cento das mulheres recebem sua certificação profissional entre os 18 e os 22 anos), e também adoecem cedo (81,9 por cento dos homens até os 41 anos; 84,3 por cento das mulheres até os 35 anos), em média após 10 anos de trabalho (11,9 anos para homens, 9,4 anos para mulheres). Os diagnósticos mais freqüentes como causa de afastamento foram, pela ordem, F32 episódios depressivos (44,5 por cento homens; 35,49 por cento mulheres), e F41 outros transtornos ansiosos (20,1 por cento dos homens; 22,9 por cento das mulheres). Discussão e Conclusão: As mulheres adoecem mais ced por cento o do que os homens, e são afastadas do trabalho principalmente por episódios depressivos. Os homens são afastados principalmente devido a transtornos ansiosos. Os dados concordam com a literatura, que aponta menor número de homens diagnosticados com transtornos mentais menores. A maior freqüência desses transtornos entre Comissários de Bordo, em comparação com as demais categorias profissionais, pode se dever a fatores associados à organização do trabalho e a fatores psicossociais do trabalho, mas os dados coletados neste estudo não permitiram verificar essa hipótese. / According to the World Health Organization (WHO), minor mental disorders, which include depression and anxiety, affect about 30 per cent of workers. Objective: To verify the frequency and the prevalence index of mental disorders among Flight Attendants withdrawn from their work. Methods: The electronic files of 648 flight attendants 105 male and 543 female were analyzed. They were evaluated during a 5-year delay, and were withdrawn from work due to at least on diagnostic of group F00-F99 of IDC-10, associated or not to organic disease(s) or condition(s). Results Flight Attendants begin to work early: 50.5 per cent of males and 70.5 per cent of females get their professional certification between 18 and 22 years old, and also get sick early: 81.9 per cent of males up to 41 years old; 84.3 per cent of females up to 35 years old, and after 10 years of work, approximately: 11.9 years for males, 9.4 years for females. The most frequent diagnostics registered as cause of withdrawn from work were F32 Depressive episode (44.5 per cent of males; 35.5 per cent of females), and F41 Other anxiety disorders (20.1 per cent of males; 22.9 per cent of females). Discussion and Conclusion: Women get sick sooner than men, and are withdrawn from work mostly due to depressive episodes. Men are withdrawn from work mostly due to anxiety disorders. The data agrees with the literature, which points out a smaller number of males diagnosed with minor mental disorders. The larger frequency of these disorders among Flight Attendants, in comparison with other professional groups, might be due to factors linked to the work organization and psychosocial factors of the job, but the data collected in this study did not allow to verify this hypothesis.

Esta pesquisa trata o Problema de Programação de Tripulantes (PPT), presente no planejamento operacional das empresas aéreas. O principal objetivo do PPT é atribuir o conjunto de tripulantes requeridos para a operação dos voos de uma malha aérea de maneira a minimizar o custo total da tripulação, levando em conta a legislação pertinente e a satisfação dos tripulantes. O PPT é normalmente dividido na literatura em dois subproblemas independentes, modelados e resolvidos sequencialmente: Problema de Determinação de Viagens (PDV) e Problema de Atribuição de Escalas (PAE). Esta decomposição não incorpora os atributos (disponibilidade, qualificação, senioridade e preferências individuais) dos tripulantes de forma global, o que não permite uma estimativa real de custo e afeta a qualidade da solução final. O estado da arte envolve a solução integrada do PPT, eliminando a necessidade de se resolver inicialmente o PDV e permitindo a obtenção de uma solução mais realista. O PPT, no entanto, é de natureza combinatória. Assim sendo, esta pesquisa propõe e explora modelos baseados em programação linear inteira e em heurísticas para a solução integrada do PPT. Essas heurísticas incorporam fundamentos da meta-heurística GRASP, da heurística de economias de Clarke e Wright e da heurística day-by-day. Os modelos foram testados com sucesso para a solução de instâncias baseadas na malha real de três empresas aéreas brasileiras. / This doctoral research treats the Crew Scheduling Problem (CSP), as part of the airlines operational planning. The CSP consists of optimally assigning the required crew members to planned flights, in such a way that it minimizes the total cost of the aircrew, taking into consideration the proper legislation and the satisfaction of the crew members. The CSP is usually divided into two independent subproblems, modeled and solved sequentially: Crew Pairing Problem (CPP) and Crew Rostering Problem (CRP). This decomposition does not incorporate all the crew members attributes (availability, qualification, seniority and individual preferences), which does not lead to a real cost estimate and affects the quality of the final solution. The state of the art involves the integrated solution of CSP, without solving the CPP at first and providing a more realistic solution. The CSP, however, has a combinatorial nature. This research proposes and explores models based on integer linear programming and on heuristics to solve the CSP in an integrated way. These heuristics incorporate GRASP metaheuristic, Clarke and Wright savings heuristic and day-by-day heuristic. The models were successfully tested to solve instances related to the networks of three Brazilian airlines.

A Organização Mundial da Saúde (OMS) considera que os transtornos mentais menores, que incluem depressão e ansiedade, afetam aproximadamente 30% dos trabalhadores. Objetivo: Verificar a freqüência, e a taxa de prevalência de transtornos mentais entre Comissários de Bordo afastados das atividades profissionais. Métodos: Foram analisados os prontuários de 648 comissários de bordo, 105 homens e 543 mulheres, que realizaram perícia durante um período de cinco anos e receberam como parecer de afastamento pelo menos um diagnóstico do agrupamento F00-F99 da CID- 10, associado ou não a doença ou transtorno orgânico. Resultados: Comissários de Bordo ingressam cedo no mercado de trabalho (50,5 por cento dos homens e 70,5 por cento das mulheres recebem sua certificação profissional entre os 18 e os 22 anos), e também adoecem cedo (81,9 por cento dos homens até os 41 anos; 84,3 por cento das mulheres até os 35 anos), em média após 10 anos de trabalho (11,9 anos para homens, 9,4 anos para mulheres). Os diagnósticos mais freqüentes como causa de afastamento foram, pela ordem, F32 episódios depressivos (44,5 por cento homens; 35,49 por cento mulheres), e F41 outros transtornos ansiosos (20,1 por cento dos homens; 22,9 por cento das mulheres). Discussão e Conclusão: As mulheres adoecem mais ced por cento o do que os homens, e são afastadas do trabalho principalmente por episódios depressivos. Os homens são afastados principalmente devido a transtornos ansiosos. Os dados concordam com a literatura, que aponta menor número de homens diagnosticados com transtornos mentais menores. A maior freqüência desses transtornos entre Comissários de Bordo, em comparação com as demais categorias profissionais, pode se dever a fatores associados à organização do trabalho e a fatores psicossociais do trabalho, mas os dados coletados neste estudo não permitiram verificar essa hipótese. / According to the World Health Organization (WHO), minor mental disorders, which include depression and anxiety, affect about 30 per cent of workers. Objective: To verify the frequency and the prevalence index of mental disorders among Flight Attendants withdrawn from their work. Methods: The electronic files of 648 flight attendants 105 male and 543 female were analyzed. They were evaluated during a 5-year delay, and were withdrawn from work due to at least on diagnostic of group F00-F99 of IDC-10, associated or not to organic disease(s) or condition(s). Results Flight Attendants begin to work early: 50.5 per cent of males and 70.5 per cent of females get their professional certification between 18 and 22 years old, and also get sick early: 81.9 per cent of males up to 41 years old; 84.3 per cent of females up to 35 years old, and after 10 years of work, approximately: 11.9 years for males, 9.4 years for females. The most frequent diagnostics registered as cause of withdrawn from work were F32 Depressive episode (44.5 per cent of males; 35.5 per cent of females), and F41 Other anxiety disorders (20.1 per cent of males; 22.9 per cent of females). Discussion and Conclusion: Women get sick sooner than men, and are withdrawn from work mostly due to depressive episodes. Men are withdrawn from work mostly due to anxiety disorders. The data agrees with the literature, which points out a smaller number of males diagnosed with minor mental disorders. The larger frequency of these disorders among Flight Attendants, in comparison with other professional groups, might be due to factors linked to the work organization and psychosocial factors of the job, but the data collected in this study did not allow to verify this hypothesis.

Made available in DSpace on 2015-03-05T13:59:42Z (GMT). No. of bitstreams: 0 Previous issue date: 27 / Nenhuma / As escalas de tripulações em companhias aéreas é um fator importante na logística de operações dessas empresas e um problema interessante para a aplicação de Pesquisa operacional. Os custos com tripulantes no transporte aéreo são extremamente altos, superiores a 20% dos custos de operações das empresas. Diante desse contexto, este trabalho vem abordar o problema de rotações de tripulações em empresas aéreas. Uma rotação de tripulação – crew pairings – é uma seqüência de etapas ou segmentos de vôo que começam e terminam em uma base domiciliar de tripulantes. O objetivo deste planejamento é encontrar um subconjunto dessas rotações com custo mínimo e que cubra todas as etapas de vôo na programação da empresa atendendo as restrições inerentes ao problema. O trabalho desenvolveu uma solução para o problema com um modelo set covering/set partitioning, primeiramente, promovendo, uma solução inicial viável que foi aplicada, numa segunda etapa, a um processo de otimização utilizando a meta-heurística Busca Tabu e jan / The flight scheduling crews in airliners are an important factor in logistic of operations of a these companies and interesting problem for the application of Operational Research. The costs with crew members in the air transportation are extremely high, superior 20% of the costs of operations of the companies. So, this study presents an approach of the crew pairing problem in airlines. The objective of this planning is to find a subgroup of these pairings with minimum cost and that it covers all the flight legs in the programming of the airliners taking care of the inherent restrictions to the problem. The solution for the problem implemented a set covering/set partitioning model, first, promoting, a viable initial solution that was applied, in one second stage, to optimize process using the meta-heuristic Tabu Search and time windows. The results had disclosed values satisfactory, demonstrating solutions that, compared with the real solution, had promoted minimization indices superior 70%. The validation

Fractional aircraft ownership programs offer companies and individuals all the benefits of owning private jet, such as safety, consistency, and guaranteed availability, at a fraction of the cost of owning an aircraft. In the fractional ownership model, the partial owners of an aircraft are entitled to certain number of hours per year, and the management company is responsible for all the operational considerations and making sure an aircraft is available to the owners at the requested time and location. This thesis research proposes advance optimization techniques to help the management company to optimally operate its available resources and provides tools for strategic decision making. The contributions of this thesis are: (i) The development of optimization methodologies to assign and schedule aircraft and crews so that all flight requests are covered at the lowest possible cost. First, a simple model is developed to solve the crew pairing and aircraft routing problem with column generation assuming that a crew stays with one specific aircraft during its duty period. Secondly, this assumption is partially relaxed to improve resource utilization by revising the simple model to allow a crew to use another aircraft when its original aircraft goes under long maintenance. Thirdly, a new comprehensive model utilizing Benders decomposition technique and a fleet-station time line is proposed to completely relax the assumption that crew stays with one specific aircraft. It combines the fleet assignment, aircraft routing, and crew pairing problems. In the proposed methodologies, real world details are taken into consideration, such as crew transportation and overtime costs, scheduled and unscheduled maintenance effects, crew rules, and the presence of non-crew-compatible fleets. Scheduling with time windows is also discussed. (ii) The analysis of operational strategies to provide decision making support. Scenario analyses are performed to provide insights on improving business profitability and aircraft availability, such as impact of aircraft maintenance, crew swapping, effect of increasing demand by Jet-card and geographical business expansion, size of company owned aircraft, and strategies to deal with the stochastic feature of unscheduled maintenance and demand.

This report recommends a strategy for the introduction of aviation style Crew Resource Management (CRM) to the offshore drilling industry. The purpose of this study was to investigate ways CRM could be applied to the offshore drilling industry as a means of mitigating the risks of human error, and in particular risks to health and safety. Research has been conducted in accordance with accepted social science research methodologies. Key processes involved a formal literature review plus the formation of a Nominal Reference Group and application of the Delphi Technique as the primary data gathering method. Case studies have been used throughout this report to provide examples of key points and to illustrate the need for effective management of human error in both the aviation and drilling industries. Results from this study provided the basis for the development of a preferred implementation plan as a practical means for adopting the principles of CRM to the offshore drilling industry. Recommendations for furthering this work include the need to benchmark training as a means of providing better evidence that CRM leads to improved safety and operational performance, the need to develop a business plan to justify the cost and effort, the need to further involve key stakeholders in the process, and they need to solicit endorsement for this project from influential industry bodies.

Esta pesquisa trata o Problema de Programação de Tripulantes (PPT), presente no planejamento operacional das empresas aéreas. O principal objetivo do PPT é atribuir o conjunto de tripulantes requeridos para a operação dos voos de uma malha aérea de maneira a minimizar o custo total da tripulação, levando em conta a legislação pertinente e a satisfação dos tripulantes. O PPT é normalmente dividido na literatura em dois subproblemas independentes, modelados e resolvidos sequencialmente: Problema de Determinação de Viagens (PDV) e Problema de Atribuição de Escalas (PAE). Esta decomposição não incorpora os atributos (disponibilidade, qualificação, senioridade e preferências individuais) dos tripulantes de forma global, o que não permite uma estimativa real de custo e afeta a qualidade da solução final. O estado da arte envolve a solução integrada do PPT, eliminando a necessidade de se resolver inicialmente o PDV e permitindo a obtenção de uma solução mais realista. O PPT, no entanto, é de natureza combinatória. Assim sendo, esta pesquisa propõe e explora modelos baseados em programação linear inteira e em heurísticas para a solução integrada do PPT. Essas heurísticas incorporam fundamentos da meta-heurística GRASP, da heurística de economias de Clarke e Wright e da heurística day-by-day. Os modelos foram testados com sucesso para a solução de instâncias baseadas na malha real de três empresas aéreas brasileiras. / This doctoral research treats the Crew Scheduling Problem (CSP), as part of the airlines operational planning. The CSP consists of optimally assigning the required crew members to planned flights, in such a way that it minimizes the total cost of the aircrew, taking into consideration the proper legislation and the satisfaction of the crew members. The CSP is usually divided into two independent subproblems, modeled and solved sequentially: Crew Pairing Problem (CPP) and Crew Rostering Problem (CRP). This decomposition does not incorporate all the crew members attributes (availability, qualification, seniority and individual preferences), which does not lead to a real cost estimate and affects the quality of the final solution. The state of the art involves the integrated solution of CSP, without solving the CPP at first and providing a more realistic solution. The CSP, however, has a combinatorial nature. This research proposes and explores models based on integer linear programming and on heuristics to solve the CSP in an integrated way. These heuristics incorporate GRASP metaheuristic, Clarke and Wright savings heuristic and day-by-day heuristic. The models were successfully tested to solve instances related to the networks of three Brazilian airlines.

Besättning ombord ro-pax-fartyg ansvarar för lastning och lossning när fartygen ligger ihamn. Lasten består till mestadels av lastbilar som körs ombord av lastbilschaufförer. Rederier har tidigare bjudit dessa yrkeschaufförer på gratis alkohol ombord och det har förekommit berusade lastbilschaufförer under lastning och lossning vid ett flertal tillfällen. Syftet med studien var att undersöka hur fartygsbefäl och matroser ombord påro-pax-fartyg upplever att arbetsmiljön på bildäck påverkas, under lastning ochlossning, med avseende på misstänkt berusade chaufförer. Arbetet har således gått ut på att undersöka hur fartygsbefäl och matroser upplever att den personliga säkerhetenpåverkas av misstänkt berusade chaufförer samt undersöka vilka skillnader det finns ombord gällande arbetsmiljö på olika ro-pax-fartyg. De relevanta regelverken,förordningar, lagar och tidigare forskning framställdes och analyserades med en kvalitativ ansats. Utifrån analysen av teorin arbetades en intervjuguide fram somanvändes till intervjuer med fartygsbefäl och matroser som arbetar på ro-pax-fartyg. Resultatet visar att misstänkt berusade chaufförers närvaro på bildäck påverkar besättningen i olika omfattning. Generellt upplevs de berusade chaufförerna som en riskhöjande faktor som kan leda till last- och personskada under lastning och lossning.

Det finns en utvecklingsriktning inom sjöfartsbranschen mot autonoma fartyg. Hur stor andel av alla fartyg som kommer vara autonoma vet man inte i dagsläget. Utgångspunkten för studien var att det kommer bli en blandning mellan autonoma och bemannade fartyg ute till havs. Studien ville ta reda på hur aktiva sjöbefäl skulle förhålla sig om de möter ett autonomt fartyg med utgångspunkt från dagens sjövägsregler. Vidare skulle studien undersöka om respondenterna ansåg att reglerna måste anpassas för autonoma fartyg. En kvalitativ metod valdes och genomfördes med standardiserade frågor. Slutsatsen är att sjövägsreglerna är komplexa på grund av dess uppbyggnad. Det går att bryta mot bestämmelserna, men samtidigt är det möjligt att följa dem. Bakgrunden till respondenternas resonemang går att hitta i tidigare forskning där det finns ett samband mellan människa och maskin. Om människan har begränsad information om ett system desto lägre förtroende har människan för det systemet. Efter alla intervjuer kom det fram att respondenterna är för en ändring av sjövägsreglerna. Den regeländringen som var mest uppenbar, var en ändring av definitionerna på grund av att de vill ha information om att det fartyg det möter är autonomt. / There is a direction of development in the shipping industry towards autonomous vessels. How many autonomous vessels there will be at sea is currently unknown. The idea for the study was that it will be a mix between autonomous and manned vessels at sea. The study wanted to find out how active maritime officers would act if they met an autonomous vessel based on today’s regulations for preventing collisions at sea (Colregs). Furthermore, the study would investigate whether respondents felt that the rules had to be reformed for autonomous vessels. A qualitative method was selected and implemented with standardized questions. The conclusion was that the sea route rules are complex due to its structure. It is possible to violate the rules, but at the same time it is possible to follow them. The background to the respondent’s thoughts can be found in previous research where there is a connection between man and machine. If the person has limited information about a system, the less trust the person has for that system. After all the interviews were done it was revealed that the respondents agreed for a change in the Colregs. The most obvious rule change was a change in the definitions because they wanted information that the ship it encountered was autonomous.

In this essay one has been investigating some of the reasons why aviation incidents take place and also examine what strategies there are to minimize the risks - primarily regarding miscommunication which often seems to be a contributing element or a direct cause in aviation mishaps. The aim of this study is to highlight and raise awareness about this field of study from a communicative point of view.The study has been performed using qualitative interviews with pilots, Air Traffic Controllers and other professionals within the aviation industry. The research has been somewhat hampered by the outbreak of the COVID-19 pandemic but not to an extent that would have corrupted the findings.The key results have indicated that miscommunication still is a problem in the aviation industry, but less so on the local national stage than in a global perspective. Two particular occurrences that have been given extra attention are runway incursions and the use of Controller Pilot Data-Link Communications.One has established that there are technical systems available on the market to improve communication performance and that runway incursion is a problem that grows with the complexity of the airport environment. One has also been made aware of the fact that human factors can only be mitigated so far with technology. The principal question has been: How can Miscommunication in Aviation be reduced? / I denna uppsats har vi tittat på några av de bakomliggande orsakerna till att incidenter fortfarande sker inom trafikflyget samt undersökt vilka strategier som föreligger för att minimera dessa risker - primärt pga felkommunikation vilken ofta tenderar att vara en bakomliggande eller direkt utlösande faktor i flygolyckor. Syftet med denna studie är att uppmärksamma och öka medvetenheten om dessa fenomen från en kommunikativ synvinkel.Studien har genomförts medelst en kvalitativ intervjumetod med piloter, flygledare och andra initierade yrkesgrupper inom flygindustrin. Forskningen har hämmats något pga utbrottet av COVID-19 pandemin men inte i en sådan omfattning att resultatet har förvanskats.De huvudsakliga resultaten har indikerat att felkommunikation fortfarande är ett problem inom flygbranschen, men i en långt mindre omfattning på lokal nationell nivå än i ett globalt perspektiv. Två specifika företeelser som har getts extra uppmärksamhet är rullbaneintrång samt användandet av CPDLC (datalänk).Vi har konstaterat att det finns tekniska system på marknaden för att förbättra prestandan på kommunikationen samt att rullbaneintrång är ett problem som växer med flygplatsens storlek och komplexitetsgrad. Vi har också uppmärksammats på att den mänskliga faktorn endast delvis kan undanröjas med hjälp av teknologi. Den huvudsakliga fågeställningen har varit: Hur kan felkommunikation inom flyget reduceras