Article
Engineering, Marine
Penghui Wang, Fei Wang, Zuogang Chen, Yi Dai
Summary: A study proposed an efficient many-objective optimization system to improve the aerodynamics of a Vista-class cruise ship at four crucial wind angles. By using techniques such as parametric modeling, sampling, and surrogate models, the optimized aerodynamics were improved effectively through a series of optimization steps.
Article
Operations Research & Management Science
Gianni Di Pillo, Marcello Fabiano, Stefano Lucidi, Massimo Roma
Summary: This paper focuses on the problem of cruise itinerary planning for worldwide cruise ship tourism. The Day-by-day Cruise Itinerary Optimization (DCIO) problem is considered, aiming to determine the daily schedule of each itinerary to optimize key performance indicators. The proposed approach utilizes a Mixed Integer Linear Programming (MILP) formulation to minimize itinerary costs and maximize itinerary attractiveness. The solution is provided in terms of Pareto optimal solution points, obtained through exact algorithms. Results obtained on real instances of a major luxury cruise company are presented as illustrative examples.
4OR-A QUARTERLY JOURNAL OF OPERATIONS RESEARCH
(2023)
Article
Thermodynamics
Qiang Zhang, Zewei Luo, Yongjie Zhao, Suniaikin Pavel
Summary: The novel combined system consisting of transcritical CO2 Rankine cycle and ejector refrigeration cycle can be adjusted for heating, cooling, and power according to shipboard demands. Performance analysis and comparison show that this system is more efficient in specific operation modes.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Public, Environmental & Occupational Health
Baiwei Liu, Yu Wang, Lei Jia, Yi Tian, Xiaoli Wang, Shuaibing Dong, Lingyu Shen, Zhiyong Gao, Quanyi Wang
Summary: This report presents the norovirus detection rates and viral loads in various environmental sites during 45 norovirus outbreaks in Beijing from October to December 2020, providing guidance for professionals and the public in responding to similar virus outbreaks.
Article
Thermodynamics
Zhuang Wang, Li Chen, Bin Wang, Lianzhong Huang, Kai Wang, Ranqi Ma
Summary: This study proposes an integrated optimization method to reduce fuel consumption and greenhouse gas emissions of cruise ships, considering environmental changes during the voyage.
Article
Energy & Fuels
Joanna Kizielewicz
Summary: Environmental organizations have warned that rapid weather phenomena have intensified in recent years due to deteriorating natural conditions. Carbon emissions, caused mainly by heavy fuel use in shipping companies, have negative impacts on the environment and human health. International institutions have introduced restrictive regulations and monitoring indicators to improve the marine environment.
Article
Immunology
Sarah Anne J. Guagliardo, Pragati Prasad, Andrea Rodriguez, Rena Fukunaga, Ryan T. Novak, Lauren Ahart, Jared Reynolds, Isabel Griffin, Ryan Wiegand, Laura A. S. Quilter, Stephanie Morrison, Keisha Jenkins, Hilary K. Wall, Aimee Treffiletti, Stefanie B. White, Joanna Regan, Kara Tardivel, Amy Freeland, Clive Brown, Hannah Wolford, Michael A. Johansson, Martin S. Cetron, Rachel B. Slayton, Cindy R. Friedman
Summary: Despite all interventions modeled, cruise travel still poses a significant SARS-CoV-2 transmission risk, with outbreaks common during January-April 2020. Mathematical models showed that 7-day voyages had about 70% fewer cases than 14-day voyages, and reducing the number of individuals onboard and testing passengers and crew were the most effective interventions in reducing total infections.
CLINICAL INFECTIOUS DISEASES
(2022)
Article
Parasitology
Cristiane Wanderley Cardoso, Mirela Maisa da Silva Souza, Ana Claudia Venegeroles de Sa Teles, Hernan Dario Argibay, Olivete Borba Dos Reis, Felicidade Mota Pereira, Marta Giovanetti, Tereza Magalhaes, Guilherme Sousa Ribeiro
Summary: Despite the implementation of preventive measures, COVID-19 outbreaks have occurred on non-cruise vessels. The multiple stopovers of these vessels during their routes may contribute to the global spread of SARS-CoV-2 variants. Reducing onboard transmission depends on joint efforts by the crew and local health authorities, as well as achieving high vaccination coverage to prevent infections and illness.
MEMORIAS DO INSTITUTO OSWALDO CRUZ
(2022)
Article
Engineering, Multidisciplinary
Amin Nazemian, Parviz Ghadimi
Summary: Numerical optimization of an inverted-bow trimaran was conducted using three simulation-based design frameworks. The study investigated the effects of different positions of the trimaran's side hull on resistance. The results provided optimal side hull positions for drag reduction and an optimization platform applicable to other maritime projects.
ENGINEERING OPTIMIZATION
(2023)
Article
Green & Sustainable Science & Technology
Maxim A. Dulebenets
Summary: Ocean-going ships transport a significant amount of goods globally. This study proposes a new type of collaborative agreement to help shipping lines and marine terminal operators meet emission reduction targets. By developing a mathematical model and optimization method, a balance between economic and environmental perspectives can be achieved, facilitating effective implementation of collaborative agreements.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Filipe Bernardo, Patricia Garcia, Armindo Rodrigues
Summary: The ease of travel has led to an increase in visitors to remote islands. This poses a challenge for environmental conservation and sustainable tourism. A study on the largest city in the Azores archipelago found that while cruise ships contribute to air pollution, they do not significantly impact the overall air quality. However, a monitoring network should be established to track short-term fluctuations in air pollutants during cruise ship arrivals and departures.
Article
Microbiology
Jaeyeong Park, Taehee Kim, Buhari Lawan Muhammad, Jang-Seu Ki
Summary: Ship biofouling is a major pathway for the introduction and global spread of non-indigenous organisms. Our study investigated the diatom community on the hull samples of two Korean research vessels. The results revealed distinct diatom communities associated with ship hull-fouling at an early stage of biofilm formation, which could vary between ships arriving from different regions.
JOURNAL OF MICROBIOLOGY
(2023)
Article
Transportation
Emmanouil Doundoulakis, Spiros Papaefthimiou, Ioannis Sitzimis
Summary: The year 2020 brought significant changes to the shipping industry, both positive and negative. The Covid-19 pandemic restricted people's movement, while regulations such as fuel sulfur standards helped reduce harmful air emissions. This paper focuses on the impact of shipping activities on induced air emissions in ports, using two major ports in Greece as case studies. A bottom-up methodology was employed to estimate fuel-energy consumption and air emissions accurately and reliably.
EUROPEAN TRANSPORT-TRASPORTI EUROPEI
(2022)
Article
Veterinary Sciences
Frederick A. Leighton, Patrick A. Leighton, Sarah Wood, Thijs Kuiken
Summary: The study found that environmental factors have a significant impact on pathogen transmission and highlighted the value of long-term data sets for understanding the transmission mechanisms. Juveniles from ground nests are more susceptible to epidemic diseases, with a much higher mortality rate compared to juveniles from nests in trees. Although disease-related mortality has an impact on the cormorant population, immigration has compensated for this loss to some extent.
JOURNAL OF WILDLIFE DISEASES
(2021)