Improving Mariner/Ship Interaction

This paper focuses on mariner-ship interaction from the practical end of the design spectrum. Statistical data on marine collisions, rammings and groundings attribute a considerable percentage of marine casualties to poor ship controllability. A vessel's controllability is of a dichotomous nature, constrained not only by its inherent controllability characteristics, fixed by the naval architect, but also by the skill and the expertise of the shiphandler in initiating a conclusive control strategy. The results of an international survey of naval architects and shiphandlers are presented. The techniques of frequency distribution and factor analysis were used to identify the key ship controllability effectors. This survey highlights where improvements in terms of interface design can be made. The survey identifies the key controllability effectors of naval architects and ship-handlers for effective mariner-ship interaction. A case study is presented which identifies the applicability of part-task ship simulation to improve confidence levels in practical ship control. For effective mariner/ship interaction, the designers of ships must use the various codes of practice for a ship's bridge in order to improve the bridge as a control station, and marine licensing authorities have to realize the potential benefits that training with computerized ship simulation can bring the industry.

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On distributed concern delivery in user interface design

Computer Science and Information Systems ◽

10.2298/csis141202021c ◽

2015 ◽

Vol 12 (2) ◽

pp. 655-681 ◽

Cited By ~ 14

Author(s):

Tomas Cerny ◽

Miroslav Macik ◽

Michael Donahoo ◽

Jan Janousek

Keyword(s):

User Interface ◽

Interface Design ◽

Web Application ◽

Significant Information ◽

Server Side ◽

Ui Design ◽

Potential Benefits ◽

And Performance ◽

Client Side

Increasing demands on user interface (UI) usability, adaptability, and dynamic behavior drives ever-growing development and maintenance complexity. Traditional UI design techniques result in complex descriptions for data presentations with significant information restatement. In addition, multiple concerns in UI development leads to descriptions that exhibit concern tangling, which results in high fragment replication. Concern-separating approaches address these issues; however, they fail to maintain the separation of concerns for execution tasks like rendering or UI delivery to clients. During the rendering process at the server side, the separation collapses into entangled concerns that are provided to clients. Such client-side entanglement may seem inconsequential since the clients are simply displaying what is sent to them; however, such entanglement compromises client performance as it results in problems such as replication, fragment granularity ill-suited for effective caching, etc. This paper considers advantages brought by concern-separation from both perspectives. It proposes extension to the aspect-oriented UI design with distributed concern delivery (DCD) for client-server applications. Such an extension lessens the serverside involvement in UI assembly and reduces the fragment replication in provided UI descriptions. The server provides clients with individual UI concerns, and they become partially responsible for the UI assembly. This change increases client-side concern reuse and extends caching opportunities, reducing the volume of transmitted information between client and server to improve UI responsiveness and performance. The underlying aspect-oriented UI design automates the server-side derivation of concerns related to data presentations adapted to runtime context, security, conditions, etc. Evaluation of the approach is considered in a case study applying DCD to an existing, production web application. Our results demonstrate decreased volumes of UI descriptions assembled by the server-side and extended client-side caching abilities, reducing required data/fragment transmission, which improves UI responsiveness. Furthermore, we evaluate the potential benefits of DCD integration implications in selected UI frameworks.

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Optimization of Low Head Axial-Flow Turbines for an Overtopping BReakwater for Energy Conversion: A Case Study

Energies ◽

10.3390/en14154618 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4618

Author(s):

Antonio Mariani ◽

Gaetano Crispino ◽

Pasquale Contestabile ◽

Furio Cascetta ◽

Corrado Gisonni ◽

...

Keyword(s):

Energy Conversion ◽

Control Strategy ◽

Energy Production ◽

San Antonio ◽

Axial Flow ◽

Complex Process ◽

Low Head ◽

Wave Power Conversion ◽

And Control

Overtopping-type wave power conversion devices represent one of the most promising technology to combine reliability and competitively priced electricity supplies from waves. While satisfactory hydraulic and structural performance have been achieved, the selection of the hydraulic turbines and their regulation is a complex process due to the very low head and a variable flow rate in the overtopping breakwater set-ups. Based on the experience acquired on the first Overtopping BReakwater for Energy Conversion (OBREC) prototype, operating since 2016, an activity has been carried out to select the most appropriate turbine dimension and control strategy for such applications. An example of this multivariable approach is provided and illustrated through a case study in the San Antonio Port, along the central coast of Chile. In this site the deployment of a breakwater equipped with OBREC modules is specifically investigated. Axial-flow turbines of different runner diameter are compared, proposing the optimal ramp height and turbine control strategy for maximizing system energy production. The energy production ranges from 20.5 MWh/y for the smallest runner diameter to a maximum of 34.8 MWh/y for the largest runner diameter.

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Simulation-based optimization of the control strategy of variable-frequency chilled water pump in data center: A case study in Beijing

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/787/1/012131 ◽

2021 ◽

Vol 787 (1) ◽

pp. 012131

Author(s):

L W Chong ◽

J W Huang ◽

Q Liu ◽

Z Zhang ◽

C Chen ◽

...

Keyword(s):

Control Strategy ◽

Data Center ◽

Variable Frequency ◽

Water Pump ◽

Simulation Based ◽

Chilled Water ◽

Simulation Based Optimization

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Control strategy for systems with input-induced nonlinearities: A printing system case study

2012 American Control Conference (ACC) ◽

10.1109/acc.2012.6315345 ◽

2012 ◽

Cited By ~ 4

Author(s):

C. Cochior ◽

P. P. J. van den Bosch ◽

R. Waarsing ◽

J. Verriet

Keyword(s):

Control Strategy ◽

Printing System

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Potential Benefits of Water Supply Regionalization: A Case Study the Seattle and Everett Water Systems

Building Partnerships ◽

10.1061/40517(2000)70 ◽

2000 ◽

Cited By ~ 2

Author(s):

Amy G. Reese ◽

Richard N. Palmer ◽

Sherrill E. Nelligan-Doran

Keyword(s):

Water Supply ◽

Water Systems ◽

Potential Benefits

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Exuberant Life

10.1093/oso/9780197531518.001.0001 ◽

2021 ◽

Author(s):

William H. Durham

Keyword(s):

Human Impact ◽

Charles Darwin ◽

Ecological Systems ◽

Social Ecological Systems ◽

Social Ecological ◽

History Of ◽

Potential Benefits ◽

Marine Iguanas ◽

Systems Framework

Why is Galápagos so endlessly fascinating, whether to read about, to visit, or both? Reasons include its menagerie of truly unusual organisms (like tree daisies, marine iguanas, and flightless cormorants), its relatively low human impact (most of its endemic biodiversity is still extant), and its unrivalled role in the history of science ever since Charles Darwin. Exuberant Life offers a contemporary synthesis of what is known about the evolution of the curiously wonderful organisms of Galápagos, of how they are faring in the tumultuous world of human-induced change, and how evolution can guide efforts today for their conservation. In eight case-study chapters, the book looks at each organism’s ancestry, at how and when it came to Galápagos, and how and why it changed since its arrival, all with an eye to its conservation today. Such analysis often provides surprises and suggestions not previously considered, like the potential benefits to joint conservation efforts with tree daisies and tree finches, for example, or ways that a new explanation for peculiar behaviors in Nazca and blue-footed boobies can benefit both species today. In each chapter, a social-ecological systems framework is used, because human influence is always present, and because it allows an explicit link to evolution. We see how the evolutionary fitnesses of Galápagos organisms are now a product of both ecological conditions and human impact, including climate change. Historically, Galápagos has played a central role in the understanding of evolution; what it now offers to teach us about conservation may well prove indispensable for the future of the planet.

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Aligning accreditation and academic program reviews: a Canadian case study

Quality Assurance in Education ◽

10.1108/qae-11-2016-0061 ◽

2017 ◽

Vol 25 (3) ◽

pp. 287-302 ◽

Cited By ~ 1

Author(s):

Lynne Bowker

Keyword(s):

Professional Associations ◽

Academic Program ◽

Content Type ◽

Post Secondary ◽

Study Approach ◽

Academic Units ◽

Potential Benefits ◽

Set Up ◽

Program Reviews

Purpose This paper aims to investigate the potential benefits and limitations associated with aligning accreditation and academic program reviews in post-secondary institutions, using a descriptive case study approach. Design/methodology/approach The paper describes two Canadian graduate programs that are subject to both external professional accreditation and institutional cyclical reviews, as they underwent an aligned review. The process was developed as a collaborative effort between the academic units, the professional associations and the university’s graduate-level quality assurance office. For each program, a single self-study was developed, a single review panel was constituted, and a single site visit was conducted. The merits and challenges posed by the alignment process are discussed. Findings Initial feedback from the academic units suggests that the alignment of accreditation and program reviews is perceived as reducing the burden on programs with regard to the time and effort invested by faculty, staff and other stakeholders, as well as in terms of financial expenses. Based on this feedback, along with input from reviewers and program evaluation committee members, 14 recommendations emerged for ways in which an aligned review process can be set up for success. Practical implications The results suggest that aligned reviews are not only resource-efficient but also allow reviewers to provide more holistic feedback that faculty may be more willing to engage with for program enhancement. Originality/value The present study contributes to the existing body of knowledge about conducting aligned reviews in response to external accreditation requirements or institutional needs. It summarizes the potential benefits and limitations and offers recommendations for potential best practices for carrying out aligned reviews for policymakers and practitioners.

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The influence of spatial design characteristics on low-rise residential neighbourhoods in Basra city

International Journal of Housing Markets and Analysis ◽

10.1108/ijhma-02-2013-0013 ◽

2014 ◽

Vol 7 (4) ◽

pp. 559-585

Author(s):

Hani Alahmed ◽

Wa’el Alaghbari ◽

Rahinah Ibrahim ◽

Azizah Salim

Keyword(s):

Social Interaction ◽

Social Interactions ◽

Significant Influence ◽

Statistical Data ◽

Residential Building ◽

Content Type ◽

Spatial Design ◽

Two Factors ◽

Design Characteristics

Purpose – This paper aims to investigate the ways that could enhance residents’ social interaction in low-rise residential building neighbourhoods of Basra city in Iraq. The lack of social interaction among residents of Basra city prompted the authors to frame a strategy for this case study. Design/methodology/approach – The spatial design characteristics of low-rise residential building neighbourhoods implicated to support the residents in terms of social interactions in comparison to those exhibited by a single home and traditional neighbourhoods. The statistical data demonstrated that by using this strategy, several unique features of secured, collective, responsive and supportive spaces could enhance the residents’ social interaction. Findings – This study found that all collective space factors have a significant influence on social interaction. “Fostering proper proximity and accessibility” factor was ranked first and the most significant factor with an influence on social interaction. Secured spaces (hierarchical spatial structure, physical security supports and construct) have a significant influence on social interaction. The most interesting finding in this study is that all factors of the supportive spaces construct have a significant influence on social interaction. Finally, this study showed that two factors of the responsive spaces construct, increasing variety and increasing legibility, have an insignificant influence on social interaction. Originality/value – The design of low-rise residential building neighbourhoods in Basra city may be used to develop social interaction as the contributing factor for maintaining values of traditional neighbourhood communities. This study highlights certain recommendations for architects, especially urban designers, to reinforce residents’ social interaction in low-rise residential building neighbourhoods in Basra city.

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