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The crew timetabling problem: an extension of the crew scheduling problem

Gomes, Marta Castilho; Cavique, Luís; Themido, Isabel
Fonte: Springer Science Publicador: Springer Science
Tipo: Artigo de Revista Científica
Publicado em //2006 ENG
Relevância na Pesquisa
37.43%
In some urban transportation companies driving periods are short when compared with the total duty time, leading to long non-driving periods that can be used as cover time. This paper presents the Crew Timetabling Problem, an extension of the Crew Scheduling Problem in which crew timetables are obtained by levelling the cover crew resources. An objective function for this problem is proposed in order to balance the number of driving and cover crews. A Lisbon Underground case study is used to illustrate The Crew Timetabling Problem. The problem is represented in a multigraph and solved by a tabu search-based heuristic.

Programação de tripulantes de aeronaves no contexto brasileiro.; Airline crew scheduling in the Brazilian context.

Gomes, Wagner de Paula
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 05/10/2009 PT
Relevância na Pesquisa
37.54%
Esta pesquisa trata o Problema de Programação de Tripulantes (PPT), presente no planejamento operacional das empresas aéreas. O principal objetivo do PPT é atribuir um conjunto de tarefas aos tripulantes, considerando as regulamentações trabalhistas, as regras de segurança e as políticas das empresas, de tal maneira que o custo da tripulação seja mínimo. O PPT é normalmente dividido em dois subproblemas, resolvidos sequencialmente: Problema de Determinação das Viagens (PDV) e Problema de Atribuição de Escalas (PAE). No PDV, determina-se um conjunto de viagens que cubra todos os voos planejados. Em seguida, no PAE, as escalas, compostas pelas viagens escolhidas e outras atividades como folgas, sobreavisos, reservas, treinamentos e férias, são atribuídas aos tripulantes. Esta decomposição justifica-se pela natureza combinatória do PPT, porém não incorpora as disponibilidades e as preferências dos tripulantes em ambos os subproblemas (PDV e PAE), gerando assim custos extras relacionados aos conflitos que surgem durante a atribuição das escalas aos tripulantes no PAE. Além disso, as estimativas de custos adotadas no PDV não possuem caráter global, já que o custo real da programação só pode ser obtido após a atribuição das escalas. O estado da arte envolve a solução integrada do PPT...

Uma análise das normas brasileiras de habitabilidade e segurança para os alojamentos das embarcações; An analysis of brazilian standards of habitability and safety of ships' crew accommodation

Toniolo, João Fabio Mariotto
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 28/04/2014 PT
Relevância na Pesquisa
37.14%
Esta dissertação de mestrado apresenta os resultados de uma pesquisa que buscou verificar se as normas vigentes no Brasil para os alojamentos dos tripulantes de navios mercantes são efetivas em propiciar boas condições de habitabilidade e segurança. O processo utilizado para esta verificação foi o de comparar tais normas com recomendações e determinações de diversas fontes. A opção por este objeto de pesquisa se justifica uma vez que atualmente, após mais de duas décadas de decadência da indústria naval e da frota mercante brasileiras, há um grande número de navios em construção. Além disso, a vida útil dos navios é de aproximadamente trinta anos, o que significa que a inadequação das normas segundo as quais são construídos implicaria em consequências de longo prazo e difíceis de serem revertidas, em função da complexidade dos navios. Por outro lado, a Organização Marítima Internacional e outras fontes citam o projeto dos alojamentos como um dos fatores que podem influenciar no aumento do número de casos e na intensidade da fadiga entre os tripulantes, com reflexos na incidência de erros humanos e, consequentemente, de acidentes marítimos. Um indicador da existência de deficiências na configuração dos espaços de alojamento é o número de acidentes pessoais neles ocorridos...

Modelagem integrada do problema de programação de tripulantes de aeronaves.; Integrated modeling of the airline crew scheduling problem.

Gomes, Wagner de Paula
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 20/01/2014 PT
Relevância na Pesquisa
37.43%
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...

Uma equipe de um, a experiência de filmar em solitário; One-person-film crew, the experience of filming alone

Viviana Echavez Molina
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 28/08/2014 PT
Relevância na Pesquisa
27.25%
A realização de um filme geralmente demanda o trabalho de um grupo de pessoas para se distribuir as tarefas criativas e de produção. Porém, dentro do cinema documentário tem sido vários os casos de cineastas que empreenderam sozinhos a realização de um filme. O presente trabalho de pesquisa pretende elucidar as consequências que traz consigo assumir um projeto cinematográfico de documentário em solitário, isto é com o diretor como único membro da equipe. Nesse sentido se fará uma análise da obra do cineasta norte americano Ross McElwee tendo em conta que ele desenvolve a maior parte da sua obra como uma equipe de uma pessoa só. Além disso, no presente trabalho se desenvolverá uma experiência prática de realização de um documentário nestas condições. A pesquisa prática será um caminho para observar através da experiência, como a decisão de filmar com uma equipe de uma pessoa só, se vê refletida tanto no processo de realização como na obra finalizada.; Filmmaking generally demands the work of a crew for the distribution of creative and production functions. Nevertheless, in documentary several directors undertook alone the process of filmmaking. The present research work aims to elucidate what consequences working alone in a documentary film may bring; in other words...

Solving Public Transit Scheduling Problems

Mesquita, Marta; Moz, Margarida; Paias, Ana; Paixão, José; Pato, Margarida Vaz; Respício, Ana
Fonte: Centro de Investigação Operacional - Universidade de Lisboa Publicador: Centro de Investigação Operacional - Universidade de Lisboa
Tipo: Outros
Publicado em //2008 ENG
Relevância na Pesquisa
27.25%
Operational planning within public transit companies has been extensively tackled but still remains a challenging area for operations research models and techniques. This phase of the planning process comprises vehicle scheduling, crew scheduling and rostering problems. In this paper, a new integer mathematical formulation to describe the integrated vehicle-crew-rostering problem is presented. The method proposed to solve this multi-objective problem is a sequential algorithm considered within a preemptive goal programming framework that starts from the solution of an integrated vehicle and crew scheduling problem and ends with the solution of a driver rostering problem. Feasible solutions for the vehicle and crew scheduling problem are obtained by combining a column generation scheme with a branch-and-bound method. These solutions are the input of the rostering problem, which is tackled through a mixed binary linear programming approach. An application to real data of a Portuguese bus company is reported and shows the importance of integrating the three scheduling problems.

A decomposition approach to the integrated vehicle-crew-rostering problem

Mesquita, Marta; Moz, Margarida; Paias, Ana; Pato, Margarida Vaz
Fonte: Centro de Investigação Operacional - Universidade de Lisboa Publicador: Centro de Investigação Operacional - Universidade de Lisboa
Tipo: Outros
Publicado em //2009 ENG
Relevância na Pesquisa
37.25%
The problem addressed in this paper is the integrated vehicle-crew-rostering problem (VCRP) aiming to define the schedules for the buses and the rosters for the drivers of a public transit company. The VCRP is described by a bi-objective mixed binary linear programming model with one objective function aggregating vehicle and crew scheduling costs and the other the rostering features. The VCRP is solved by a heuristic approach based on Benders decomposition where the master problem is partitioned into daily integrated vehicle-crew scheduling problems and the sub-problem is a rostering problem. Computational experience with data from a bus company in Lisbon shows the ability of the decomposition approach for producing a variety of potentially efficient solutions for the VCRP within low computing times.

Chromosomal damage in air crew members of international flights: A preliminary report

Picco,S.J.; De Luca,J.C.; MacIntyre,C.; Dulout,F.N.
Fonte: Sociedade Brasileira de Genética Publicador: Sociedade Brasileira de Genética
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2000 EN
Relevância na Pesquisa
27.32%
Air crew members of international flights are exposed to ionizing radiations originated from the collision of cosmic particles with atoms of the atmosphere. The degree of exposure varies according to the altitude, latitude, and solar activity. The cytogenetical analysis showed a significant increase of dicentric chromosomes (14.5 ± 0.76 per 1,000 cells) in active air crew members as well as in retired air crew members (7.5 ± 0.59 per 1,000 cells) in relation to controls (0.5 ± 0.05 per 1,000 cells). In active members the frequency of ring chromosomes was also increased (2.0 ± 0.31 per 1,000 cells) but not found in retired crew members. These observations suggest a high degree of exposure to ionizing radiations of air crew personnel. Consequently, the cytogenetic follow-up of air crews chronically exposed to low radiation doses is an open field for further investigations.

A study of different metaheuristics to solve the urban transit crew scheduling problem

Silva,Gustavo Peixoto; Reis,Allexandre Fortes da Silva
Fonte: Sociedade Brasileira de Planejamento dos Transportes Publicador: Sociedade Brasileira de Planejamento dos Transportes
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2014 EN
Relevância na Pesquisa
37.14%
This paper explores different local search methods associated with the metaheuristic Iterated Local Search (ILS) to solve the Crew Scheduling Problem (CSP) of a Public Transportation System. The results from ILS were compared to those obtained in a previous work from the same authors that used the Variable Neighborhood Search (VNS). Initially, both metaheuristics were implemented using, as local search, the classical First Improvement Method, performing "guided" reallocation and exchange of crew tasks. The guided reallocation/exchange replaces random components from the classical method by searching the best position to insert the task. Further, the Very Large-scale Neighborhood Search (VLNS) technique was used as a local search procedure in the metaheuristics. This technique has substantially more neighbors than the 2-opt neighborhoods, since it performs a chain exchange of tasks from different crews. Both versions of metaheuristics were applied to a set of real data from a company operating in the city of Belo Horizonte, producing more economical schedules than those adopted by the company. The results are presented and discussed in this work.

Heuristics to solve the integrated airline crew assignment problem

Gomes,Wagner P.; Gualda,Nicolau D. F.
Fonte: Sociedade Brasileira de Planejamento dos Transportes Publicador: Sociedade Brasileira de Planejamento dos Transportes
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2015 EN
Relevância na Pesquisa
37.38%
A typical problem related to airline crew management consists of optimally assigning the required crew members to planned flights for a given period of time, while complying with a variety of labor regulations, safety rules and policies of the airline. This problem, called crew assignment problem (CAP), is of the NPHard class. So, it is usually divided into two independent subproblems, crew pairing problem (CPP) and crew rostering problem (CRP), modeled and solved sequentially. This division does not provide a global treatment to the CAP in terms of total cost and quality of the final solution. The state of the art involves the integrated solution of CAP, with both subproblems (CPP and CRP) solved simultaneously. It still requires high computational effort. Its combinatorial nature makes it difficult (or even impossible) to be solved by exact methods. The methodology proposed in this research provides an integrated solution of the CAP with heuristic procedures. The methodology was tested to solve instances related to small and medium-sized Brazilian airlines. The results were also compared with those obtained through an exact model adapted from the literature.

Exposure to cosmic radiation of British Airways flying crew on ultralonghaul routes.

Bagshaw, M; Irvine, D; Davies, D M
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /07/1996 EN
Relevância na Pesquisa
27.25%
British Airways has carried out radiation monitoring in Concorde for more than 20 years and has used a heuristic model based on data quoted by the National Aeronautics and Space Administration (NASA) to model radiation exposure in all longhaul fleets. From these data it has been calculated that no flight deck crew would exceed the control level of 6 mSv/y currently under consideration by regulatory authorities, which is three tenths of the occupational dose limit of 20 mSv/y recommended by the International Commission on Radiological Protection (ICRP). The model suggested that less than 4% of cabin crew based in Tokyo flying only between London and Japan could reach or exceed the 6 mSv/y level, based on a predicted effective dose rate of 7 microSv/h. To validate this calculation a sampling measurement programme was carried out on nine round trips flown by a Boeing 747-400 between London and Tokyo. The radiation field was measured with dosimeters used for routine personal monitoring (thermoluminescence dosimeters (TLDs) and polyallydiglycol carbonate neutron dosimeters). The limitations of the methodology are acknowledged, but the results indicate that the effective dose rate was 6 microSv/h which is consistent with the predicted effective dose rate of 7 microSv/h. This result...

Galvanizing medical students in the administration of influenza vaccines: the Stanford Flu Crew

Rizal, Rachel E; Mediratta, Rishi P; Xie, James; Kambhampati, Swetha; Hills-Evans, Kelsey; Montacute, Tamara; Zhang, Michael; Zaw, Catherine; He, Jimmy; Sanchez, Magali; Pischel, Lauren
Fonte: Dove Medical Press Publicador: Dove Medical Press
Tipo: Artigo de Revista Científica
Publicado em 01/07/2015 EN
Relevância na Pesquisa
27.43%
Many national organizations call for medical students to receive more public health education in medical school. Nonetheless, limited evidence exists about successful servicelearning programs that administer preventive health services in nonclinical settings. The Flu Crew program, started in 2001 at the Stanford University School of Medicine, provides preclinical medical students with opportunities to administer influenza immunizations in the local community. Medical students consider Flu Crew to be an important part of their medical education that cannot be learned in the classroom. Through delivering vaccines to where people live, eat, work, and pray, Flu Crew teaches medical students about patient care, preventive medicine, and population health needs. Additionally, Flu Crew allows students to work with several partners in the community in order to understand how various stakeholders improve the delivery of population health services. Flu Crew teaches students how to address common vaccination myths and provides insights into implementing public health interventions. This article describes the Stanford Flu Crew curriculum, outlines the planning needed to organize immunization events, shares findings from medical students’ attitudes about population health...

Changing the VP reserve readiness system to match the crew-coordination requirements of reserve aircrews

Woods, William H
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
ENG
Relevância na Pesquisa
27.32%
Approved for public release; distribution is unlimited; Recently, the VP community has been identified as a force area where reserves could be used more in peacetime contributory support. The subsequent increased interaction between reserve and active VP forces has led to a similar readiness system. The current VP readiness system promotes long-term, fixed crews with TACNUC rules. Adhering to these crew composition rules can cause considerable scheduling difficulties for reserve squadrons. Squadron readiness officers are often forced to change events, pick different crews, or turn the event into a practice session due to last minute civilian commitments of SELRES crewmembers. This thesis examines current crew-coordination research to determine the value of keeping crews together. The study proposes alternatives to the current TACNUC rules and analyzes their perceived impact according to SME interviews. This study recommends discarding the TACNUC rules in favor of a readiness system based on individual qualifications. The desired crew- coordination training can be accomplished through the ongoing TPC and ACT programs. Standardization of crew communication patterns and positional task expectancies should continue so that each individual crewmember can perform well on an crew

Optimization-based decision support system for crew scheduling in the cruise industry

Giachetti, Ronald E.; Damodaran, Purush; Mestry, Sid; Prada, Claudia
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
27.55%
The article of record as published may be located at http://dx.doi.org/10.1016/j.cie.2012.08.011; Crew members on cruise ships are hired in a global labor market, and a major cost for cruise lines is moving crew members from their home cities to the cruise ship’s departure port. Complicating the crew scheduling problem is the uncertainty due to no-shows, terminations, and other reasons for crew to terminate their contract prematurely. To address this problem, this paper describes a scheduling system that implements a two-stage planning process that first determines overbooking levels for the number of crew to offer contracts to, and then second, a goal integer programming formulation to minimize the movement cost of assigning crew to ships while maintaining adequate crew levels and a desired crew region composition. We solve actual-sized problems characteristic of the cruise industry in a reasonably short amount of time. Experiments comparing the actual crew movement costs to the system’s projected crew movement costs show that the scheduling system can consistently reduce the movement costs in the range of 9–23%, better maintain desired crew levels, and better maintain desired crew region composition.

Optimization of shipboard manning levels using IMPRINT Pro Forces Module

Shattuck, Nita Lewis; Matsangas, Panagiotis
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Relevância na Pesquisa
27.38%
Approved for public release; distribution in unlimited.; The Improved Performance Research Integration Tool (IMPRINT) is a dynamic, stochastic, discrete-event modeling tool used to develop a model of the system of interest. In this project, we used the IMPRINT Pro Forces Module to build models of the crew of the Littoral Combat Ship (LCS). The basic concept underlying the development of a model using the Forces module is that crewmembers spend all of their time in some sort of “planned” activities/events. In the context of the model, this term refers to activities typically occurring in the ship’s daily schedule (e.g., specified times for meals, personal time, watch standing [for crewmembers who stand watch], training, preventive maintenance, sleep, etc.). These planned activities, however, are interrupted or “augmented” by unforeseen emergencies and events (i.e., unplanned activities to which the crew must respond and resolve) such as flooding, collision, equipment casualties, etc. Phase 1 of this effort was focused on model development for naval applications—specifically, to validate the use of IMPRINT Pro Forces model simulations for the LCS manpower requirements (Hollins & Leszczynski, 2014). This phase included two tasks. First...

An evaluation of the effectiveness of the crew resource management programme in naval aviation

O'Connor, Paul; Jones, Douglas W.; McCauley, Michael E.; Buttrey, Samuel E.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
36.99%
The US Navy’s Crew Resource Management (CRM) training programme has not been evaluated within the last decade. Reactions were evaluated by analysing 51,570 responses to an item pertaining to CRM that is part of a safety climate survey. A total of 172 responses were obtained on a knowledge test. The attitudes of 553 naval aviators were assessed using an attitudes questionnaire. The CRM mishap rate from 1997 until 2007 was evaluated. It was found that naval aviators appear to think than CRM training is useful, are generally knowledgeable of, and display positive attitudes towards, the concepts addressed in the training. However, there is a lack of evidence to support the view that CRM training is having an effect on the mishap rate. As the next generation of highly automated aircraft becomes part of naval aviation, there is a need to ensure that CRM training evolves to meet this new challenge.

Implementation of a personnel database system for crew allocation and reports production in a small battle ship's environment.

Anastasatos, Constantinos
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Tese de Doutorado Formato: 191 p.
EN_US
Relevância na Pesquisa
36.99%
Approved for public release; distribution is unlimited; Crucial to the Naval mission, but administrative in nature, is the assignment of ship's company to temporary and permanent duty assignments. This study implements a personnel database system for personnel management on a small battle ship. dBASE III is used as a "Database Management Software" and the "System" is implemented as a collection of algorithms providing intelligent decisions about these assignments. It can be supported by an IBM PC/XT (or an IBM PC/XT compatible) microcomputer. The system is designed to provide real time management decision information on crew allocations, as well as required periodic reports, based on current crewmember information.; http://archive.org/details/implementationof00anas; Lieutenant, Hellenic Navy

Stage crew scene and makeup scene for a Florida Players production at the Univerity of Florida.

Fonte: Universidade da Flórida Publicador: Universidade da Flórida
Tipo: still image Formato: 2 x 2 cellulose acetate
Publicado em //1950's ENGLISH
Relevância na Pesquisa
36.99%
Scanned. Silvering minimal. Two 120 mm negs. Stage crew scene and makeup scene for a Florida Players production at the Univerity of Florida..; (Funding) Digitized with funding from the Institute of Museum and Library Services as part of the Ephemeral Cities grant project.

Percepção de riscos dos tripulantes de cabina da SATA Air Açores

Tavares, Crisálida Marília Correia
Fonte: Universidade dos Açores Publicador: Universidade dos Açores
Tipo: Dissertação de Mestrado
Publicado em 20/10/2011 POR
Relevância na Pesquisa
27.38%
Dissertação de Mestrado em Ambiente, Saúde e Segurança.; Os tripulantes de cabina exercem a sua profissão a bordo de aeronaves da aviação civil comercial, onde se encontram expostos aos mais variados tipos de riscos ocupacionais. O aparecimento dos diversos riscos está profundamente ligado à necessidade do homem criar melhores condições de vida e está presente em toda a actividade humana. Porém, nem sempre existe uma ligação entre o risco percebido e o risco real. Este estudo analisa os riscos ocupacionais perspectivados pelos Tripulantes de Cabina da SATA Air Açores, nas diversas dimensões do risco ocupacional como o seu perfil, a severidade, a controlabilidade e a vulnerabilidade. Pretende, também, averiguar o comportamento dos Tripulantes de Cabina no que respeita a situações de risco ocupacional e a sua posição relativamente à profissão que desempenham. Os resultados revelam que a maioria dos tripulantes de Cabina da SATA Air Açores, possui um bom conhecimento acerca dos riscos ocupacionais e que a sua profissão é de risco elevado, particularmente, quando comparada a outras profissões. No geral, são os riscos de natureza física e psicológica que mais afectam os Tripulantes em estudo. O ruído e as vibrações são apontados como geradores de fadiga acrescida e de stress. Efectuar mais de 6 aterragens foi a situação mais referida ao longo deste estudo...

Visibilización de los procesos de influencia musical que intervienen en el colectivo Zamala Crew y Cartografía Digital que expresa su música fusión

Arango Roesel, Elizabeth; Jiménez Muñoz, María Camila
Fonte: Pontificia Universidad Javeriana; Facultad de Humanidades y Ciencias Sociales; Carrera de comunicación Publicador: Pontificia Universidad Javeriana; Facultad de Humanidades y Ciencias Sociales; Carrera de comunicación
Tipo: info:eu-repo/semantics/bachelorThesis; Trabajo de Grado; info:eu-repo/semantics/publishedVersion Formato: application/pdf; 202 p.
SPA
Relevância na Pesquisa
37.38%
El trabajo de grado efectuado desarrolla un análisis de las posibles influencias musicales que ha recibido el grupo Zalama Crew. Mediante el documento a continuación y gracias a una cartografía digital pueden así reconocerse procesos de influencia cultural, enmarcados en la interculturalidad, que intervienen en la música fusión (world music) para el caso de este colectivo musical. En este trabajo de grado se va a explicar el contexto de algunos géneros musicales que, según Zalama Crew, les han influenciado de forma directa o indirecta y que han surgido en diferentes épocas y lugares del mundo. Seguido a esto se explicará la sensibilidad cultural que tiene Santiago de Cali con respecto a la música local y extranjera. Finalmente, se mostrará cómo ha sido la relación que tienen estos géneros musicales, concretamente en la música del colectivo Zalama Crew y cómo ellos proponen una especie de contracultura a partir de sus letras e ideales. Para la realización de estos propósitos, en primer lugar se identificaron las trayectorias de los músicos y de las personas que intervienen en el proyecto musical Zalama Crew. En segundo lugar, se ha explorado cómo el colectivo estudiado se piensa la ciudad. Por último...