Journal articles: 'Cabinda (Ship)'

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Ni, Baocheng, Zhen Li, Pei Zhang, and Xiang Li. "An Evacuation Model for Passenger Ships That Includes the Influence of Obstacles in Cabins." Mathematical Problems in Engineering 2017 (2017): 1–21. http://dx.doi.org/10.1155/2017/5907876.

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Passenger behavior and ship environment are the key factors affecting evacuation efficiency. However, current studies ignore the interior layout of passenger ship cabins and treat the cabins as empty rooms. To investigate the influence of obstacles (e.g., tables and stools) on cabin evacuation, we propose an agent-based social force model for advanced evacuation analysis of passenger ships; this model uses a goal-driven submodel to determine a plan and an extended social force submodel to govern the movement of passengers. The extended social force submodel considers the interaction forces between the passengers, crew, and obstacles and minimises the range of these forces to improve computational efficiency. We drew the following conclusions based on a series of evacuation simulations conducted in this study: (1) the proposed model endows the passenger with the behaviors of bypassing and crossing obstacles, (2) funnel-shaped exits from cabins can improve evacuation efficiency, and (3) as the exit angle increases, the evacuation time also increases. These findings offer ship designers some insight towards increasing the safety of large passenger ships.

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Wang, Chia-Nan, Ming-Hsien Hsueh, Chao-Jung Lai, Chen-Fa Wang, and Shi-Hao Wang. "Improvement of the Welding Process for Fillet Air Test for the Biggest Taiwan Shipyard." Journal of Marine Science and Engineering 9, no. 1 (January 13, 2021): 80. http://dx.doi.org/10.3390/jmse9010080.

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During ship block construction, watertight bulkheads weld of every cabin of ships need to undergo stress testing according to the tanks’ test plan. Every incomplete bulkhead cannot be sprayed in order to protect them after sandblasting; this seriously affects the process of construction. Therefore, the issue of this study is to maintain the integrity of the painting quality and reduce the destruction of the paint, ship-building personnel seek how best to complete the block operation. The aim of this project is to improve the recent watertight bulkheads fillet air test operations in the construction stage using TRIZ (theory of inventive problem solving), promote the ground painting session integrity of every ship, improve the tanks’ test plan in the dock, and reduce the time spent on dismantling operations and the painting operation. Through the TRIZ, this study proposed lots of improvements, some of which are: the watertight cabins can finish the tanks test plan completely, and the integrity of the ground painting can be promoted to reduce the range of cabin test in the dock and reduce watertight bulkheads’ dismantling time. Moreover, because of the considerate reduction of the destruction of the coating, the painting operation is of good quality. The results demonstrate that the TRIZ successfully controls the production quality during construction, reduces working time, and promotes full efficiency. This study saved more than US$1 million of the outsourcing fee.

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Liang, Bing Nan, and Hong Liang Yu. "Finite Element Parametric Acoustic Modeling and Analysis of Ship Floating Cabins." Applied Mechanics and Materials 333-335 (July 2013): 2146–50. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.2146.

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The development of parametric calculation module program based on APDL, the completion of 3D acoustic modeling of a ship floating cabin, the selection of constraints according to the actual work situations, the finite element modal analysis of the overall cabin in the ANSYS environment and comparative analysis of a low-order vibration frequency of the cabin under different fire ratings. Acoustic calculation program of the fluid-structure interaction is used to analyze harmonic sound field and verify the impact of different thickness fireproof rockwools on the cabin acoustic performance. Parametric Design and Finite Element Analysis are combined to achieve the adjustment of the structural parameters of the complex models, automatically generate solid models and complete finite element analysis, which is important for the optimization of the acoustic design of the ship cabins.

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Hao, Jinyu, Sheng Guo, Jian Cheng, Zhaopin Hu, and Hongyu Cui. "Research on the Sound Insulation Properties of Membrane-type Acoustic Metamaterials." E3S Web of Conferences 252 (2021): 02028. http://dx.doi.org/10.1051/e3sconf/202125202028.

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Low- and medium-frequency noise from ship cabins is difficult to control effectively. Excessive noise can seriously affect the acoustic stealth performance of ships. A novel membrane-type acoustic metamaterial is proposed in this paper with light weight and good sound insulation performance at low frequencies. The sound insulation performance of the metamaterial structure is analysed by using the acoustic-solid coupling module in COMSOL software. Then, the ability to change the sound insulation performance of membrane-type acoustic metamaterials with cell structure and material parameters is obtained. The research results in this paper provide powerful technical support for noise control in ship cabins.

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Barsocchi, Paolo, Erina Ferro, Davide La Rosa, Atieh Mahroo, and Daniele Spoladore. "E-Cabin: A Software Architecture for Passenger Comfort and Cruise Ship Management." Sensors 19, no. 22 (November 15, 2019): 4978. http://dx.doi.org/10.3390/s19224978.

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A cruise ship is a concentrate of technologies aimed at providing passengers with the best leisure experience. As tourism in the cruise sector increases, ship owners turned their attention towards novel Internet of things solutions able, from one hand, to provide passengers with personalized and comfortable new services and, from the other hand, to enable energy saving behaviors and a smart management of the vessel equipment. This paper introduces the E-Cabin system, a software architecture that leverages sensor networks and reasoning techniques and allows a customized cabin indoor comfort. The E-Cabin architecture is scalable and easily extendible; sensor networks can be added or removed, rules can be added to/changed in the reasoner software, and new services can be supported based on the analysis of the collected data, without altering the system architecture. The system also allows the ship manager to monitor each cabin status though a simple and intuitive dashboard, thus providing useful insights enabling a smart scheduling of maintenance activities, energy saving, and security issues detection. This work delves into the E-Cabin’s system architecture and provides some usability tests to measure the dashboard’s efficacy.

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Jung, Jae-Deok, Suk-Yoon Hong, Jee-Hun Song, and Hyun-Wung Kwon. "Predictions of airborne noise between unit cabins by developing a cavity transfer matrix." Noise Control Engineering Journal 69, no. 3 (May 1, 2021): 229–42. http://dx.doi.org/10.3397/1/376923.

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The unit cabin has been used to construct internal ship space for improved efficiency and to reduce budgetary costs in shipbuilding. Because the cavity is placed between unit cabins, the noise of one room is transmitted through the sound insulating panel, the cavity, and the opposite sound-insulating panel. In this study, by developing a transfer matrix of the cavity between structures, airborne noise between unit cabins was predicted. A sandwich panel, which is usually used in ships, was employed to construct a double panel, and the sound insulation performance was confirmed by changing the thickness of the cavity. To improve the reliability of numerical results, they were compared with those from experiments conducted. The results showed that as the cavity size increases, the overall sound insulation performance improves. A parameter study was also conducted on the density, Young's modulus, thickness, and thickness ratio of the core of the sandwich panel. To improve the sound insulation performance, increasing the density of the core is preferable to increasing the core thickness. The panel thickness ratio should be increased to avoid performance degradation as a result of the resonance frequency.

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Tu, Wanli, Hong Xu, Yiqun Xu, Qiubo Ye, and Mingxian Shen. "Research on 2.4 GHz Wireless Channel Propagation Characteristics in a Steel Ship Cabin." International Journal of Antennas and Propagation 2021 (January 19, 2021): 1–12. http://dx.doi.org/10.1155/2021/6623638.

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Wireless sensor network (WSN) has become a popular technology and has a good potential application in naval architecture and marine engineering field. Analysis of transmission ability of wireless signal in steel ship environment is important for network deployment including base station and node installation, which would directly impact network performance and has become a hot research field. This paper investigates 2.4 GHz frequency wireless signal propagation characteristics in the steel ship cabin. A 3D ray-tracing model of 2.4 GHz wave propagation in the ship cabin is established, a multipath propagation prediction is carried on, and receiving power is calculated. Besides, the experimental test is performed in the real ship. The simulated and experimental results are processed and compared; the influence law of large obstacles on the signal is discussed, and the guidance scheme for node and base station deployment of the wireless sensor network is proposed. The results show that this analysis could provide valid interpretation of wireless channel propagation characteristics in steel ships.

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Weyna, Stefan. "The Use of Acoustic Vectors Decomposition of Sound Fields to Vibroacoustic Protection on Ships." Archives of Acoustics 42, no. 2 (June 27, 2017): 207–12. http://dx.doi.org/10.1515/aoa-2017-0023.

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Abstract In this paper, numerous examples will be illustrated as principles of applying the sound intensity measurements to practical problems at the noise abatement on ships and offshore constructions. The paper presents the results of transmission loss measurements together with flanking transmission for ship bulkheads and partitions with doors and windows. Investigations carried out with sound intensity measurement techniques will be compared against those made by classical methods. Finally for a few examples, the graphic presentation of spatial distribution of sound intensity vectors risen close to vibrating ship cabin partitions and inside the cabin will be shown in 2D and 3D graphical form. As a result, a two-dimensional acoustic wave flow map of time-averaged active intensity vectors propagated along curved streamlines and a vector perpendicular to measured plane are graphically illustrated. The technique of acoustic vectors decomposition of sound fields described, can enrich the knowledge of the mechanism of acoustic energy flux through ship partitions.

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Chen, Yan Fei, Shuang Zhuang, Liang Yang, and Zhi Wei Feng. "Large Ship Cabins Fire Prevention and Fire Safety Evaluation Method." Advanced Materials Research 726-731 (August 2013): 877–81. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.877.

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Aiming at the fire type and evolution of large ship cabins, a fire risk analysis method of large ship cabins based on fire scene analysis was established, which is basing on the International Maritime Organization (IMO) SOLAS Convention and International fire procedures (FTP ) by combining Chinas ship cabins fire protection technology and fire safety management features. The purpose is to improve technical level of the fire risk management and fireproof disposal basing on fire prevention with warning disposal by dynamic risk management of ship cabins fire hazard and fire control technology.

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10

Smith, Cynthia Alicia. "Uncle Tom's (Ship) Cabin." ESQ: A Journal of Nineteenth-Century American Literature and Culture 66, no. 1 (2020): 47–88. http://dx.doi.org/10.1353/esq.2020.0003.

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Mrzljak, Vedran, and Tomislav Mrakovčić. "Comparison of COGES and Diesel-Electric Ship Propulsion Systems." Journal of Maritime & Transportation Science Special edition, no. 1 (April 2016): 131–48. http://dx.doi.org/10.18048/2016-00.131.

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Diesel-electric ship propulsion is a frequent shipowners choice nowadays, especially on passengerships. Despite many diesel engines advantages, their primary disadvantage is emission of pollutants. As environmental standards become more stringent, the question of optimal alternative to diesel-electric propulsion arises. COGES (COmbined Gas turbine Electric and Steam) propulsion system is one of the proposals for alternative propulsion system, primarily due to significant reduction of pollutant emissions. On the other hand, gas turbines have higher specific fuel consumption in comparison with diesel engines what represents their noticeable disadvantage. However, some analyzes suggested that COGES propulsion system could be still cost-effective in comparison to diesel-electric propulsion, particularly on passenger ships where higher initial investment can be compensated by increasing the number of passenger cabins. This paper shows a comparison of above mentioned propulsion systems, which can be useful for the optimal ship propulsion system selection

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Firląg, Szymon. "Quality of outdoor and indoor environment during the cruise of the tall ship STS Fryderyk Chopin." E3S Web of Conferences 49 (2018): 00024. http://dx.doi.org/10.1051/e3sconf/20184900024.

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The aim of this paper is to present the results of measurements, on the quality of internal and external environment, carried out during the cruise of the tall ship STS Fryderyk Chopin. The cruise took place between 16th and 30th September 2017 as part of the scientific seminar of the Warsaw University of Technology (WUT) on the Wave, addressed to students of the WTU. After leaving the port of Edinburgh, crossing the North Sea, the Danish straits, stops in Copenhagen and Kołobrzeg, the tall ship reached Szczecin after two weeks. The measurements carried out on the deck included the temperature and relative humidity of the indoor air in three cabins and the men’s bathroom. In two cabins, the CO2 concentration was measured additionally. The outdoor temperature, relative humidity and concentration of PM 1.0, PM 2.5 and PM 10 were also measured. The obtained results allowed to assess the quality of the internal environment in accordance with the standards and to analyze the effectiveness of the mechanical ventilation system. Measurements of particulate matter have shown significant differences between outdoor air quality in the open sea and in ports or near major shipping routes. It turned out that the impact of emissions from passing ships using diesel engines is clearly visible.

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Wang, Yun-long, Zhang-pan Wu, Guan Guan, and Chao-guang Jin. "Research on Intelligent Design Method of Ship Cabin Layout." Marine Technology Society Journal 54, no. 2 (March 1, 2020): 79–92. http://dx.doi.org/10.4031/mtsj.54.2.8.

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AbstractThe design of the ship cabin layout is a multi-objective comprehensive optimization problem, which needs to consider the location of the passage, cabin layout, space utilization ratio, functional realization, comfort, safety, and so on. In this paper, an improved tabu-criterion genetic algorithm for the intelligent design of ship cabin layout is proposed. According to the characteristics of ship accommodation cabin layout design, a ship deck layout area model and a multi-objective optimization model including relative location model, absolute location model, and ergonomic constraint model are established. The neighborhood transformation criterion and tabu-criterion of tabu search algorithm are introduced into genetic algorithm to advance the local search ability of a genetic algorithm. At the same time, a new genetic algorithm coding method is proposed to avoid the generation of illegal solutions in cabin layout sequence crossover and mutation operation. The improved genetic algorithm can effectively improve the local search ability of a genetic algorithm and make the algorithm converge to the optimal solution as soon as possible at the later stage of calculation. Finally, the simulation results verify the feasibility and efficiency of the proposed intelligent design method for ship accommodation cabin layout.

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Han, Haoyang, Jundong Zhang, and Ruizheng Jiang. "Feature Design Assessment of the Ship Fire Alarm System." Scientific Programming 2021 (July 23, 2021): 1–12. http://dx.doi.org/10.1155/2021/3934428.

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Damages and misfortunes caused by fire on ships have recently accelerated the creation of new approaches, development, and building the security and unchanging quality of the fire detection framework. Simultaneously, with the growing interest in better early fire detection and prevention, numerous frameworks are being created for the detection of progress, with control calculations having the task of carefully preparing and identifying true/false signals from fire or flames or the true alarm from false alarms. By utilizing the assistance provided by innovation, transport owners are more likely to service groups and fleets of ships and reduce potential fire accident costs. This article provides an overview of recent methodologies and technology for early detection of ship fires, as well as an enhanced approach for evaluating the Human-Machine-Interface (HMI) function of an alarming ship using a machine operating simulator called DMS-2017B. The DMS-2017B machinery operation simulator can unify the noise environment to avoid the influence of environmental differences on cabin experimental results. Compared to conventional Binomial Testing, a ship simulator coupled with the theory of affordance that provides a more realistic and operable way to assess the feature design of ship fire alarm and the threshold of some influence factors can also be used. According to the quantitative analysis of experimental results based on the ordered logit model, the function of the ship fire alarm would be improved significantly by adding recorded broadcasting and replacing static symbols with flashing symbols. Increasing sound pressure is also an effective way of doing this, but an auditory threshold is present. Above 75 dB, this effect will fade down, along with noise pollution. However, the effect difference between continuous alarm and square wave pulse alarm is negligible. The conclusion can provide some guidance for the design of a ship fire alarm. An appropriate design is expected to facilitate the efficiency of handling accidents and guiding evacuation.

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O'Mahony, Mary C., N. D. Noah, B. Evans, D. Harper, B. Rowe, J. A. Lowes, A. Pearson, and B. Goode. "An outbreak of gastroenteritis on a passenger cruise ship." Journal of Hygiene 97, no. 2 (October 1986): 229–36. http://dx.doi.org/10.1017/s0022172400065311.

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SummaryIn an outbreak of gastroenteritis on board a cruise ship 251 passengers and 51 crew were affected and consulted the ship's surgeon during a 14-day period. There was a significant association between consumption of cabin tap water and reported illness in passengers. Enterotoxigenic Escherichia coli were isolated from passengers and crew and coliforms were found in the main water storage tank. Contamination of inadequately chlorinated water by sewage was the most likely source of infection.A low level of reported illness and late recognition of the outbreak delayed investigation of what was probably the latest in a series of outbreaks of gastrointestinal illness on board this ship. There is a need for a national surveillance programme which would monitor the extent of illness on board passenger cruise ships as well as a standard approach to the action taken when levels of reported illness rise above a defined level.

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Zheng, Lijie, Qingyan Chen, Jian Xu, and Fangliang Wu. "Evaluation of intervention measures for respiratory disease transmission on cruise ships." Indoor and Built Environment 25, no. 8 (July 28, 2016): 1267–78. http://dx.doi.org/10.1177/1420326x15600041.

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Respiratory diseases are common infectious illnesses on cruise ships. This study integrated an individual-to-individual probability model, a susceptible-exposed-infected-recovered epidemic model at the individual scale, and an onboard indoor social contact network model for evaluating the infection risk on a typical cruise ship voyage. The integrated model was validated by data from a previous influenza outbreak and was able to simulate the infection spreading. The model was used to assess the effects of various intervention measures on controlling influenza on a cruise ship with one index passenger. The results show that individuals in crew cabins and restaurants faced the highest infection risk. Increasing the air change rate in some or all locations could reduce the infection risk to some extent. High-efficiency particulate air filters and ultraviolet germicidal irradiation devices in ventilation systems were the most effective measures. Surgical masks worn by crew members or a quarantine of the index passenger and his/her roommate could reduce the attack rate only to a moderate extent.

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Borelli, Davide, Tomaso Gaggero, Enrico Rizzuto, and Corrado Schenone. "Onboard ship noise: Acoustic comfort in cabins." Applied Acoustics 177 (June 2021): 107912. http://dx.doi.org/10.1016/j.apacoust.2021.107912.

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Zhou, Zhenwei, and Jiaming Wu. "Low to Middle Vibro-Acoustic Noise Prediction in Ship Cabin by Using Plate-Cavity Coupling Model." Polish Maritime Research 25, s2 (August 1, 2018): 149–57. http://dx.doi.org/10.2478/pomr-2018-0086.

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Abstract A plate-cavity coupling method based on modal expansion technique in the closed sound cavity was introduced, aiming at ship cabin structural noise. Using this method, a coupled equation was established. The structural vibration acceleration of the target cabin was extracted from a ship vibration response calculation, applied to the model. Then the target cabin noise value was obtained through numerical calculation. The effectiveness and reliability of the method were validated through experiments. The coupled model predicts noise in the cabin does not require fluid finite element model of the cabin air, thus greatly reducing the calculation time compared with the pure finite element method. It was shown that the method is suitable for the calculation of noise in a single ship cabin; the method has a high calculation efficiency. Furthermore, the calculated result is a continuum. On the one hand, it can be conveniently converted to an octave or 1/3 octave according to the specification. On the other hand, the form of the continuum also provides a corresponding response to the subsequent vibration and noise control.

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Fang, Tang, Li Pan, Chen Guofeng, and Xie Jianghui. "An Estimation Method of Fire Extinguishing Time in Closed Ship Cabin." E3S Web of Conferences 165 (2020): 06007. http://dx.doi.org/10.1051/e3sconf/202016506007.

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There are many potential fire hazards in ship engine cabin, especially in the closed environment of submarine underwater. Fires in cramped cabin are usually harder to put out, therefore, enclosing cabin is a possible means of extinguishing fire. In this paper, typical fire scene in ship engine cabin is analyzed firstly, then a two-layer zone model of engine cabin fire is established combined with structural characteristics of engine cabin. According to the mass conservation and energy conservation, fire smoke layer change rule is described to estimate extinguishing time. At last, typical hydraulic jet fire and electrical fire smoke layer calculation is taken as an example. The result shows that enclosing cabin is a fast and effective method, and the method of estimating fire extinguishing time in engine cabin by this paper is feasible.

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Xiao, Le Ming, Yan Qiong Song, and Jian Li. "Study on Movable Equipment for Realizing Seamless On-Shore Seamless Power Supply for Berthing Vessels." Advanced Materials Research 1070-1072 (December 2014): 1077–84. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1077.

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The dissertation demonstrated movable equipment to realize uninterruptable power supply on-shore connection, i.e. the movable switchgear and mobile synchronizing cabinet, which can unchanging structure of ship power station rather than hugely increase the investment of shore power transformation, and also achieve continuous electricity power supply for domestic vessels berthing on the ports with shore power interface connecting on-shore power, so as to realize environmental protection in port and expenditure savings for the ship. Ship controlling shore power connection system, by means of the movable switchgear and mobile synchronizing cabinet, can achieve paralleling operation between 400 V/ 50 Hz shore power and marine power generator correspondingly, and also transferring the load and paralleling off marine generators, as well as, paralleling accordingly marine generator with the shore power, corresponding transferring load and cut off shore power. Movable equipment for realizing seamless power supply between the port and ship is simple, reliable, convenient, economical and efficient. The dissertation proves that the device is simple, reliable, convenient, economical and efficient.

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Shen, Yang. "An Anti-Collision Method of Slip Barrel for Automatic Ship Loading in Bulk Terminal." Polish Maritime Research 23, s1 (October 1, 2016): 144–51. http://dx.doi.org/10.1515/pomr-2016-0059.

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Abstract During the loading operation of a ship loader in bulk terminal, in order to bring bulk cargo, such as coal and ore, precisely into every corner of the cabin and not to raise dust at the same time, the slip barrel mechanism usually is placed fully inside the ship cabin near the cargo as close as possible. However, if too close, it will increase the risk of collision between slip barrel and cargo, which poses a security risk to loading operation. This article proposes an anti-collision method for slip barrel in the process of automatic ship loading in bulk terminal. This method can accurately position the cargo of cabin which is blocked by slip barrel and shovel, and provide a reliable guarantee for the automatic loading operation. Firstly, this method use an array of laser radar mounted on the maintenance platforms to perceive the collision objects around the slip barrel, including the cargo and cabin. Meanwhile, it provides a compensation algorithm to reduce the effect of anti-collision recognition brought by dust and various obstacles during the operation. According to the calculated effective distance between the cargo and slip barrel, the automatic control system of ship loading can adjust the loading operation on a real-time basis. In the end, this article analyze and illustrate the reliability and validity of this method by the case of the application in automatic ship loading system in Tianjin coal terminal.

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Liang, Zheng Xuan, Lin Yan, and Ji Zhuo Shang. "Ship cabin layout design using game theory." Journal of Marine Science and Technology 13, no. 4 (July 23, 2008): 446–54. http://dx.doi.org/10.1007/s00773-008-0009-2.

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Zhao, Zhong Chao, Hua Cheng, Wei Xian Feng, and Bo Jin Qin. "Simulation Analysis on Dynamic Load of Air-Conditioning System of Ocean-Going Ship." Applied Mechanics and Materials 672-674 (October 2014): 1693–99. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.1693.

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In this paper, a dynamic load mathematic model for ship’s multifunctional cabins was developed using the “black box model” theory. The multifunctional cabins’ dynamic loads for a ship navigating in a typical Eurasian route were calculated through this mathematic model. The research results show that the air-conditioning load of cabins varies with navigation areas and sailing time significantly. Ventilation load accounts for 51.92% of the total load, while heat conduction and radiation load only account for 7.47% and 6.68%, respectively. For a same navigating area, the maximum load for different cabins is 2.648 times of the minimum load at the same time. In addition, the impact factors were analyzed by regression analysis method, and that the 91.72% of variation of the dynamic load results from the outside temperature changing

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Chung, Long-Yeu. "Remote Teleoperated and Autonomous Mobile Security Robot Development in Ship Environment." Mathematical Problems in Engineering 2013 (2013): 1–14. http://dx.doi.org/10.1155/2013/902013.

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We propose a wireless remote teleoperated and autonomous mobile security robot based on a multisensor system to monitor the ship/cabin environment. By doing this, pilots in charge of monitoring can be away from the scene and feel like being at the site monitoring and responding to any potential safety problems. Also, this robot can be a supplementary device for safety cabin crew members who are very busy and/or very tired of properly responding to crises. This can make one crew member on duty at the cabin a possible option. In fact, when the robot detects something unusual in the cabin, it can also notify the pilot so that the pilot can teleoperate the robot to response to whatever is needed. As a result, a cabin without any crew members on duty can be achieved through this type of robot/system.

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Abdelkhalek, Hany, Duan Feng Han, Liang Tian Gao, and Qing Wang. "Computational Fluid Dynamics and Numerical Acoustic Response for Ship Accommodation Areas due to Propeller Excitation, towards a Human Factors Recommendations." Applied Mechanics and Materials 707 (December 2014): 406–11. http://dx.doi.org/10.4028/www.scientific.net/amm.707.406.

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In order to achieve the acoustic comfort design for ship accommodation areas, This paper introduces the noise prediction of ship’s superstructure cabins based on boundary element method (BEM). The study investigates the ship acoustic responses due to fluctuating forces induced as a result of interaction between a 4-bladed propeller and Bulk Carrier ship 35,000DWT at full scale. The mathematical models for the ship and the propeller have been built and validated using computational fluid dynamics (CFD), then unsteady simulation done to obtain the transient responses of the propeller excitations. Finally, the acoustic responses of ship super structure under propeller excitations are predicted using BEM in time domain. This work shows a numerical method enable to measure the structural and acoustic responses of the ship at propeller rotating speeds. In addition, at the structural resonating modes of the propeller and the ship. As the propulsion system is the main source of the ship exciting forces thereby nowadays prediction of the ship low frequency noise due to propulsion system becomes important to naval designer for designing a comfort accommodation areas for the crew onboard the ship.

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Yamagishi, Takuya, Makoto Ohnishi, Nobuaki Matsunaga, Kensaku Kakimoto, Hajime Kamiya, Kiyoko Okamoto, Motoi Suzuki, et al. "Environmental Sampling for Severe Acute Respiratory Syndrome Coronavirus 2 During a COVID-19 Outbreak on the Diamond Princess Cruise Ship." Journal of Infectious Diseases 222, no. 7 (July 21, 2020): 1098–102. http://dx.doi.org/10.1093/infdis/jiaa437.

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Abstract During a COVID-19 outbreak on the Diamond Princess cruise ship we sampled environmental surfaces after passengers and crew vacated cabins. SARS-CoV-2 RNA was detected in 58 of 601 samples (10%) from case cabins 1–17 days after cabins were vacated but not from noncase cabins. There was no difference in detection proportion between cabins of symptomatic (15%, 28/189; cycle quantification [Cq], 29.79–38.86) and asymptomatic cases (21%, 28/131; Cq, 26.21–38.99). No SARS-CoV-2 virus was isolated from any of the samples. Transmission risk of SARS-CoV-2 from symptomatic and asymptomatic patients may be similar and surfaces could be involved in transmission.

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Pang, Fu Zhen, Ye Qing Jin, and Xiong Liang Yao. "APDL Based Vibration Optimization of a Ship Foundation." Advanced Materials Research 338 (September 2011): 525–29. http://dx.doi.org/10.4028/www.scientific.net/amr.338.525.

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Based on the structural dynamics optimization theory, a vibration optimization design method of a ship foundation by APDL language is presented in this paper. Structural dynamic optimization design of a ship foundation under the constraint of gross weight of a ship cabin is performed by ANSYS to minimize the vibration of ship hull plating. Optimization shows that the thickness of webs has considerable influence on the vibration isolation performance of ship foundation, while changes of the thickness of base panels and brackets have insignificant influence. Optimal thickness combination of webs, panels and brackets of the foundation is obtained through the optimization. Study also provides reference for practical engineering as well as enriches theories and methodologies of novel vibration isolation for ship foundation design.

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Huang, Li-Shan, Li Li, Lucia Dunn, and Mai He. "Taking account of asymptomatic infections: A modeling study of the COVID-19 outbreak on the Diamond Princess cruise ship." PLOS ONE 16, no. 3 (March 16, 2021): e0248273. http://dx.doi.org/10.1371/journal.pone.0248273.

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The COVID-19 outbreak on the Diamond Princess (DP) cruise ship has provided empirical data to study the transmission potential of COVID-19 with the presence of pre/asymptomatic cases. We studied the changes in R0 on DP from January 21 to February 19, 2020 based on chain binomial models under two scenarios: no quarantine assuming a random mixing condition, and quarantine of passengers in cabins—passengers may get infected either by an infectious case in a shared cabin or by pre/asymptomatic crew who continued to work. Estimates of R0 at the beginning of the epidemic were 3.27 (95% CI, 3.02–3.54) and 3.78 (95% CI, 3.49–4.09) respectively for serial intervals of 5 and 6 days; and when quarantine started, with the reported asymptomatic ratio 0.505, R0 rose to 4.18 (95%CI, 3.86–4.52) and 4.73 (95%CI, 4.37–5.12) respectively for passengers who might be exposed to the virus due to pre/asymptomatic crew. Results confirm that the higher the asymptomatic ratio is, the more infectious contacts would happen. We find evidence to support a US CDC report that “a high proportion of asymptomatic infections could partially explain the high attack rate among cruise ship passengers and crew.” Our study suggests that if the asymptomatic ratio is high, the conventional quarantine procedure may not be effective to stop the spread of virus.

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Liu, Wei, and Shi Long Xue. "Research on Auto Control System for Ship Loader Based on AC800M." Advanced Materials Research 383-390 (November 2011): 1231–34. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.1231.

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Ship loader is one of the most key equipments for bulk material handing in bulk port. This paper regards the ship loader as the study object, introduces an auto detection technology of cabin position and material distribution, and advances a new control measure for automation loading. The field-bus technology of Profibus, AC800M series PLC, inverter, encoder was adopted to build automatic control system. In the mean time, the control code and the ship loader Management System, which is written in Control Builder for AC800M and Visual Basic independently, are used to actual ship loading process without people.

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Beck, Justin, John Harvey, Kristina Kaylen, Corrado Sala, Melinda Urban, Peter Vermeulen, Norman Wilken, Wei Xie, Dan Iliescu, and Pratik Mital. "Carnival Optimizes Revenue and Inventory Across Heterogenous Cruise Line Brands." INFORMS Journal on Applied Analytics 51, no. 1 (February 2021): 26–41. http://dx.doi.org/10.1287/inte.2020.1062.

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Carnival Corporation & plc identified the need for a cutting-edge revenue management system; however, existing solutions from the airline and hospitality industries were not compatible with the idiosyncrasies of the cruise domain. As such, the company partnered with revenue analytics to build a complete revenue and inventory management system to meet its requirements. Yield optimization and demand analytics (YODA) is a system that leverages a unique quadratic programming model to jointly determine cruise prices and allocate cabin inventory to multiple cruises (e.g., 14-day and 7-day lengths) offered simultaneously on a given ship. The optimization inputs come from several machine learning algorithms that predict demand. YODA combines these algorithms with an elasticity model derived from an exponential curve to represent the unique price-sensitivity behavior observed in the cruise industry. The system generates millions of price recommendations each day and has been used to price voyages on 65 Carnival ships, approximately one quarter of the ships in the entire cruise industry, since December 2017. During A/B testing, YODA generated a 1.5%–2.5% incremental uplift in net ticket revenue, which is a significant revenue increase because Carnival was a Fortune 300 company in 2019.

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Walker, Liz J., Tudor A. Codreanu, Paul K. Armstrong, Sam Goodwin, Abigail Trewin, Emma Spencer, Samantha M. Colquhoun, et al. "SARS-CoV-2 infections among Australian passengers on the Diamond Princess cruise ship: A retrospective cohort study." PLOS ONE 16, no. 9 (September 7, 2021): e0255401. http://dx.doi.org/10.1371/journal.pone.0255401.

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Background Prolonged periods of confined living on a cruise ship increase the risk for respiratory disease transmission. We describe the epidemiology and clinical characteristics of a SARS-CoV-2 outbreak in Australian passengers on the Diamond Princess cruise ship and provide recommendations to mitigate future cruise ship outbreaks. Methods We conducted a retrospective cohort study of Australian passengers who travelled on the Diamond Princess from 20 January until 4 February 2020 and were either hospitalised, remained in Japan or repatriated. The main outcome measures included an epidemic curve, demographics, symptoms, clinical and radiological signs, risk factors and length of time to clear infection. Results Among 223 Australian passengers, 56 were confirmed SARS-CoV-2 positive. Forty-nine cases had data available and of these over 70% had symptoms consistent with COVID-19. Of symptomatic cases, 17% showed signs and symptoms before the ship implemented quarantine and a further two-thirds had symptoms within one incubation period of quarantine commencing. Prior to ship-based quarantine, exposure to a close contact or cabin mate later confirmed SARS-CoV-2 positive was associated with a 3.78 fold (95% CI, 2.24–6.37) higher risk of COVID-19 acquisition compared to non-exposed passengers. Exposure to a positive cabin mate during the ship’s quarantine carried a relative risk of 6.18 (95% CI, 1.96–19.46) of developing COVID-19. Persistently asymptomatic cases represented 29% of total cases. The median time to the first of two consecutive negative PCR-based SARS-CoV-2 assays was 13 days for asymptomatic cases and 19 days for symptomatic cases (p = 0.002). Conclusion Ship based quarantine was effective at reducing transmission of SARS-CoV-2 amongst Australian passengers, but the risk of infection was higher if an individual shared a cabin or was a close contact of a confirmed case. Managing COVID-19 in cruise ship passengers is challenging and requires enhanced health measures and access to onshore quarantine and isolation facilities.

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Song, Wen Wu, Meng Tao Qin, and Dong Dong Wang. "Study on the Cable Crosstalk of Ship Cabin." Applied Mechanics and Materials 719-720 (January 2015): 652–57. http://dx.doi.org/10.4028/www.scientific.net/amm.719-720.652.

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The mechanism of cable crosstalk involving what and how does the factors affect the level of crosstalk is introduced in detail. A transmission line model for predicting crosstalk between power cable and the other wires nearby with common reference ground based on multiconductor transmission theory (MTL) is developed. Crosstalk among circuit configurations when the victim cables with load terminations are different types is analyzed and simulated. Models where the types of the victim lines are shielded coaxial cable, shielded twisted pair and unshielded twisted pair are simulated. It is found that the shielding can provide an attenuation of about 50dB than the unshielded cables. In addition, the condition of multi-cable coupling is simulated and some thoughts are brought out to inspire more detailed study. Finally, some measures are suggested to suppress the crosstalk between cables according to the two-type of coupling mechanism (inductive coupling and capacitive coupling).

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Qu, Liyan. "Ship cabin leakage alarm based on ARM SCM." IOP Conference Series: Earth and Environmental Science 128 (March 2018): 012193. http://dx.doi.org/10.1088/1755-1315/128/1/012193.

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Liu, Han, Fang Zhen Song, Ming Ming Li, and Bo Song. "Sequential Quadratic Programming Method of Cabin Optimization." Applied Mechanics and Materials 711 (December 2014): 96–99. http://dx.doi.org/10.4028/www.scientific.net/amm.711.96.

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The basic principle of sequential quadratic programming method and the concrete implementation steps in MATLAB are expounded. Sequential quadratic programming method is used for the cabin structure optimization. In the optimization, the minimal sizes of components stipulated by the rules are used as size constraints, the frequencies required by the rules are used as performance constraints and the minimum lightness of the ship are used as objective. Finite element analysis of the ship structure optimized is done and the results obtained show that both the maximum equivalent stress and the maximum shear stress meet the requirements and first three order frequencies of the cabin structure are also far away from the working frequency of propeller and host. The optimization reduces the weight of the cabin under the condition of meet the static characteristic and dynamic characteristic.

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Ji, Jian, Zhihao Ma, Jiajun He, Yingjun Xu, and Zhiqiang Liu. "Research on Risk Evaluation and Dynamic Escape Path Planning Algorithm Based on Real-Time Spread of Ship Comprehensive Fire." Journal of Marine Science and Engineering 8, no. 8 (August 12, 2020): 602. http://dx.doi.org/10.3390/jmse8080602.

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As an independent building entity on the sea, the ship has a large number of internal electrical equipment and a compact space structure, which is prone to fire. This paper proposes a key technology of virtual dynamic escape of ships based on the fire spread prediction model for research. Taking the 63,500 DWT(Dead Weight Tonnage) tanker cabin as a research entity, the mathematical and physical models of ship fire simulation are established. Through the graphical analysis of the experimental data of the fire spread simulation, the temperature, CO concentration, and smoke concentration change rules under different working conditions at the fixed detection point position are obtained. Then, based on temperature, CO concentration and smoke concentration three impact factors, set up a comprehensive fire real-time situational risk evaluation index system. Using the MATLAB software, based on the principle of the fuzzy neural network fire ship’s integrated real-time situational risk evaluation model structure design and simulation test, obtained the corresponding training to comprehensive risk evaluation model of the network. Generate navigation grid according to the law of fire sprawl, and plan escape path. The traditional A* algorithm is improved, and an example is used to prove that the path-finding result after the improved algorithm is shorter than the path found by the traditional algorithm, which meets the path-finding requirements in a three-dimensional environment.

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Cha, Sun-Il, and Ho-Hwan Chun. "Insertion loss prediction of floating floors used in ship cabins." Applied Acoustics 69, no. 10 (October 2008): 913–17. http://dx.doi.org/10.1016/j.apacoust.2007.06.007.

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Wang, Wei, Fan Zhang, and Li Sheng Chen. "Radioactive Research on Main Steam Pipe Rupture Accident of Nuclear-Powered Equipment of Ship." Applied Mechanics and Materials 152-154 (January 2012): 1729–35. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.1729.

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Respectively considering both the condition of the main steam pipe rupture position at the reactor cabin and cabin behind the reactor cabin, the accident process of the main steam pipe rupture is analyzed, the mathematic and physical model about the transference, leakage and diffusion of the radioactive nuclide is established. Through the method of coupling the thermodynamic calculation result with the radioactive result analysis model, the calculation of the nuclide radioactive concentration in the cabin is realized. Further more the harm of the radioactivity has been analyzed. The research of the paper has provided a basis for the effective constitute of the radioprotection measure in the accident.

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Luo, Xu, Yongmin Yang, Zhexue Ge, Xisen Wen, and Fengjiao Guan. "Maintainability-based facility layout optimum design of ship cabin." International Journal of Production Research 53, no. 3 (June 3, 2014): 677–94. http://dx.doi.org/10.1080/00207543.2014.919416.

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Zhuo, Jie, Maopu Wu, and Qingxin Sun. "Research on health management technology of ship cabin equipment." Journal of Physics: Conference Series 1976, no. 1 (July 1, 2021): 012057. http://dx.doi.org/10.1088/1742-6596/1976/1/012057.

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Fang, Yuan Yuan, Guo Hong Zhang, Ya Fan Li, and Peng Zhe Qi. "Design of Vibration Isolation Device for Ship Power Equipment and Investigation on its Dynamic Properties." Applied Mechanics and Materials 496-500 (January 2014): 1129–33. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.1129.

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Mechanical noise caused by power equipment vibration is the main source of underwater radiated noise of the ship, and vibration isolation and noise reduction of ship equipment has been widely concerned. Therefore,a vibration isolation system designed for four sets of auxiliary engine of ship cabin was investigated in the paper, aimed to further reveal the influence of various parameters including floating raft shell thickness, excitation source, and different ship hull and installation platform thickness on the vibration level difference of system. The results obtained from numerical analysis using MSC software and experiment indicate that one-dimensional spring element simplified can properly simulate the actual rubber vibration isolator on low frequency bands, and increasing thickness of flat, hull and platform can improve the effect of vibration isolation obviously.

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Безрукова, Наталья, and Natalya Bezrukova. "Systematic approach to the quality assessment of river cruise product." Services in Russia and abroad 10, no. 3 (September 21, 2016): 184–98. http://dx.doi.org/10.12737/20110.

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Cruise segment of the market is stable and dynamically developing part of the international tourism. This determines the relevance of the issue of cruise product quality. Determination of its components is no less important. The article discusses the issues of the cruise product quality as a multifactor model system. The author presents the main components of the cruise system, and defines its mobile element - a cruise ship. The article also examines the interaction of the cruise environment with other systems: tourism, transport, security and mega-environment. The author has developed the scheme of comprehensive cruise services quality system, which takes into account not only the traditional components: accommodation, feeding, excursions, but also elements of port services and infrastructure. The article touches on the questions of passenger accommodations standards for cruise ships, which have not been revised since mid XX century. The author suggests the need to review existing norms and standards in the design of the interior of a cruise ship, refusal of tiered cabins projects, and introduction of projects of such structural element as pool. The author presents the results of Russian consumers’ survey. Their perception of a ship’s quality and priorities are studied, and value of feeding and tour service as the most important competitive factors and elements of integrated cruise product is identified. Importance of feeding factor is consistent with studies of foreign markets consumers conducted by leading European operators and the International Association of cruise companies. The quality of excursion service depends largely on the development of inland waterways, namely the small rivers, infrastructure and shipbuilding, including small.

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Wang, Yun Long, Chen Wang, and Yan Lin. "Ship Cabin Layout Optimization Design Based on the Improved Genetic Algorithm Method." Applied Mechanics and Materials 300-301 (February 2013): 146–49. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.146.

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Based on the improved genetic algorithm method, a kind of the optimization techniques to solve the problem about the ship cabin layout is presented. The problem about the ship cabin layout is a NP-hard problem. This article has used the genetic algorithm method to solve it .However, for the simple and easy procedure, the basic genetic algorithm is slow and easy to fall into a local optimal solution. Therefore, it must be improved. This article has made the following two improvements: on the one hand using the niche method to solve the multi- peak problem; on the other hand using the climbing method to solve the slow and premature convergence. The simulation tests show that this approach proposed by authors is feasible and valid and the result is satisfied.

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Guo, Jun, Mei-ting Wang, You-wei Kang, Yin Zhang, and Chen-xu Gu. "Prediction of Ship Cabin Noise Based on RBF Neural Network." Mathematical Problems in Engineering 2019 (April 14, 2019): 1–21. http://dx.doi.org/10.1155/2019/2781437.

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Prediction of cabin noise for new types of ships and offshore platforms, based on measurement or simulation databases, is a common problem that needs a solution at the beginning of the design process. In this paper, we explore the use of a radial basis function (RBF) neural network to study this problem. Within the framework of the RBF network, we implement and compare several algorithms to devise a fast and precise cabin noise prediction model. We select a combination of algorithms after training the RBF with noise measurement samples. The results show that the RBF neural network trained using the DE algorithm has better prediction accuracy, generalization, and robustness than the others. Our work provides a new method for preliminary noise assessment during the schematic design phase and enables rapid analysis of vibration and noise control schemes for ships and offshore platforms.

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Yang, Jiandong, Chao Ma, Hairui Xiao, and Yunling Zhou. "Research on application of zeolite in air purification of ship cabins." IOP Conference Series: Earth and Environmental Science 632 (January 14, 2021): 052069. http://dx.doi.org/10.1088/1755-1315/632/5/052069.

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ao, Cui, Huang jin-e, Min shao-song, Jiang jie, Huang xiang-bing, and Zhang ran-ran. "Research on the layout problem of typical ship cabins considering maintainability." Journal of Physics: Conference Series 1965, no. 1 (July 1, 2021): 012128. http://dx.doi.org/10.1088/1742-6596/1965/1/012128.

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Li, Jinghua, Hui Guo, Shichao Zhang, Xiaoyuan Wu, and Liuling Shi. "Optimum Design of Ship Cabin Equipment Layout Based on SLP Method and Genetic Algorithm." Mathematical Problems in Engineering 2019 (January 21, 2019): 1–14. http://dx.doi.org/10.1155/2019/9492583.

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The engine room is the heart of a ship, and almost all of the main electromechanical equipment that supports the work on board can be found here. Finding a way to arrange the equipment in a small cabin space is an essential factor in the design and construction of a ship. However, in existing research, when an intelligent algorithm is used to optimize the design of a cabin, the established mathematical model is not comprehensive and the solution has not been evaluated. The optimal solution obtained is not feasible for the actual design of a ship. This can lead to unnecessary redesign work, which seriously affects design efficiency and increases design costs. In order to solve the above problems, this paper innovatively refers to a Systematic Layout Planning (SLP) method (normally applied to the layout of plant equipment) to the cabin equipment layout issue. The SLP method is used to quantitatively analyze the adjacency and logistics relationship between devices, and the mutual integration relationship between devices is obtained so that a preliminary layout scheme can be retrieved. The problem model is constructed by considering various factors such as the comprehensive relationship between the equipment and the stability of the cabin, and the corresponding objective function and constraint function are established to further design the variables, operators, and steps of the genetic algorithm. The initial solution obtained from the SLP method is used as part of an initial solution to the genetic algorithm, and the genetic algorithm is used to optimize the problem. Finally, the Analytic Hierarchy Process (AHP) is used to evaluate and optimize several groups of better schemes obtained by running multiple genetic algorithms and select the better schemes. The experimental design proves that the integrated design method has certain feasibility and superiority.

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Zhu, Zenghui, and Shu Li. "Study on aerodynamic noise of axial flow fan in ship signal cabinet." Journal of Physics: Conference Series 1983, no. 1 (July 1, 2021): 012013. http://dx.doi.org/10.1088/1742-6596/1983/1/012013.

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Chen, Jianbo, Wei Wang, MingLu Qu, and Wenli Yin. "Study on Hot Air Distribution of Ship Cabin Air-Conditioning." Procedia Engineering 121 (2015): 1420–27. http://dx.doi.org/10.1016/j.proeng.2015.09.054.

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ZHANG, Lei, ZhiPeng DU, Peng GAO, and Ying LI. "Research advance of damage load of surface ship cabin explosion." SCIENTIA SINICA Physica, Mechanica & Astronomica 51, no. 12 (August 18, 2021): 124605. http://dx.doi.org/10.1360/sspma-2020-0378.

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Li-Fen, Hu, Qi Huibo, Li Yuemeng, Li Wubin, and Chen Shude. "The CFD Method-Based Research on Damaged Ship’s Flooding Process in Time-Domain." Polish Maritime Research 26, no. 1 (March 1, 2019): 72–81. http://dx.doi.org/10.2478/pomr-2019-0009.

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Abstract The flooding process is one of the main concerns of damaged ship stability. This paper combines the volume of fluid (VOF) method incorporated in the Navier-Stokes (NS) solver with dynamic mesh techniques to simulate the flooding of a damaged ship. The VOF method is used to capture the fluid interface, while the dynamic mesh techniques are applied to update the mesh as a result of transient ship motions. The time-domain flooding processes of a damaged barge and a rectangular cabin model are carried out based on the abovementioned method, and the computational results appear compatible with the experimental data. During the flooding process, the motion of the flooding flow at different stages is observed and compared with that observed in real conditions. The time-domain research of the flooding process is the starting point for subsequent establishment of damaged ship’s roll movement and capsizing the mechanism of dead ship condition in wave.

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Journal articles on the topic 'Cabinda (Ship)'

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