scholarly journals Bridge officers’ operational experiences with electronic chart display and information systems on ships

2016 ◽  
Vol 52 (1) ◽  
pp. 49-61 ◽  
Author(s):  
Goran Bakalar ◽  
Myriam Beatriz Baggini
Keyword(s):  
Information System ◽  
System Failures ◽  
Existing Problems ◽  
Starting Point ◽  
Study Results ◽  
Electronic Chart ◽  
Maritime Navigation ◽  
Survey Results ◽  
Good Starting Point ◽  
Taking Action

In this paper, authors suggest an improvement in the electronic chart display and information system handling. Electronic nautical charts provide significant benefits to maritime navigation as a real time navigation system and all updates are important. This paper analyses the electronic chart use experiences on board ships. A questionnaire and survey were used so as to ascertain and corroborate the existing problems with corrections and maintenance of electronic charts on ships, and reliability of the systems was calculated. The survey results have shown that ship’s officers had serious problems with ECDIS systems which were difficult to solve during ship’s operation. A survey was done which showed that a significant percentage of the surveyed bridge officers and captains had problems with ECDIS system operation, such as operation stoppage due to different reasons. They did not always report failures of these systems while having continued to operate ECDIS. The reliability of those systems was also calculated and it resulted 0.916 or 91.6%. Compared to results of previous similar researches done by other scientists, the results of this research show an improvement in the ECDIS handling. It was concluded that a proper action was needed toward finding the solution to the future chart corrections procedure through remote monitoring and maintenance. The study results emphasized that taking action was necessary in the interest of safety protection on ships, with particular attention to be paid to better safety of navigation, of life, and of potential environmental pollution due to this type of information system failures. The results obtained by this study represent a good starting point for future researches in the field.

Voyage Planning and Track Keeping with Paper and Electronic Charts: A Case Study of Maritime Navigation Tasks

1993 ◽  
Vol 37 (9) ◽  
pp. 564-568
Author(s):  
Thomas F. Sanquist ◽  
John D. Lee
Keyword(s):  
Information System ◽  
Task Performance ◽  
Specific Information ◽  
Paper Chart ◽  
Continuous Record ◽  
Keyhole Effect ◽  
Electronic Chart ◽  
Maritime Navigation

Enhancements in shipboard automation offer the prospect of crew size reductions for navigation tasks. This work was concerned with comparing the structure of navigation tasks using paper charts with the same tasks accomplished using an electronic chart display information system (ECDIS). Voyage planning with paper charts is based on drawing specific voyage segments, measuring distances between waypoints, and annotating the chart with voyage specific information. These tasks change substantially with electronic charts, particularly in terms of how the task is accomplished. Similarly, the manual activities of track keeping are reduced, but the need for a continuous record maintains the use of the paper chart. For both navigation tasks, there is less ability to visualize geographic features continuously with electronic charts because of the keyhole effect created by a CRT display. It is concluded that the design of automated navigation aids should be based not only on the informational aspects of task performance, but also the functional means by which navigators carry out their tasks with conventional technologies such as paper charts.

scholarly journals STANDARDISATION OF PLOTTING COURSES AND SELECTING TURN POINTS IN MARITIME NAVIGATION

2014 ◽  
Vol 26 (4) ◽  
pp. 313-322
Author(s):  
Zvonimir Lušić ◽  
Serđo Kos ◽  
Stipe Galić
Keyword(s):  
Information System ◽  
Turning Points ◽  
Route Planning ◽  
Subjective Assessment ◽  
Database Search ◽  
Data Recording ◽  
Automatic Selection ◽  
Electronic Chart ◽  
Maritime Navigation ◽  
Selection Of

Today's methods of plotting courses and selecting sailing routes and turn points in maritime navigation are still largely based on subjective assessment of the master or the officer in charge. This results in a great variety of course distribution and, accordingly, in various ship movements. Modern electronic aids, in particular ECDIS (Electronic Chart Display and Information System) can significantly facilitate maritime voyage planning, course plotting, selection of turning points, etc. In addition to displaying electronic charts, the specific feature of these systems is that they facilitate route planning, supervision of ship movements, data recording, database search, alarm setting, etc. However, these systems do not yet provide automatic selection of courses on user's request in a standardised form. Therefore, in most cases, the routes and turn points are selected empirically or because they have been previously defined and used. This paper shows the drawbacks of the existing methods of selecting routes and plotting courses in maritime navigation and gives recommendations how to improve them.

scholarly journals Discovery and Optimization of Selective Inhibitors of Meprin α (Part I)

2021 ◽  
Vol 14 (3) ◽  
pp. 203 ◽  
Author(s):  
Shurong Hou ◽  
Juan Diez ◽  
Chao Wang ◽  
Christoph Becker-Pauly ◽  
Gregg B. Fields ◽  
...  
Keyword(s):  
Inhibitory Activity ◽  
De Novo ◽  
Selective Inhibitors ◽  
Preclinical Development ◽  
Starting Point ◽  
Good Starting Point ◽  
Parallel Screening ◽  
Low Cytotoxicity

Meprin α and β are zinc-dependent proteinases implicated in multiple diseases including cancers, fibrosis, and Alzheimer’s. However, until recently, only a few inhibitors of either meprin were reported and no inhibitors are in preclinical development. Moreover, inhibitors of other metzincins developed in previous years are not effective in inhibiting meprins suggesting the need for de novo discovery effort. To address the paucity of tractable meprin inhibitors we developed ultrahigh-throughput assays and conducted parallel screening of >650,000 compounds against each meprin. As a result of this effort, we identified five selective meprin α hits belonging to three different chemotypes (triazole-hydroxyacetamides, sulfonamide-hydroxypropanamides, and phenoxy-hydroxyacetamides). These hits demonstrated a nanomolar to micromolar inhibitory activity against meprin α with low cytotoxicity and >30-fold selectivity against meprin β and other related metzincincs. These selective inhibitors of meprin α provide a good starting point for further optimization.

scholarly journals Advances on the Implementation of Circular Economy Techniques in Rural Areas in Colombia under a Sustainable Development Framework

2021 ◽  
Vol 13 (7) ◽  
pp. 3816
Author(s):  
Javier Rodrigo-Ilarri ◽  
Camilo-A. Vargas-Terranova ◽  
María-Elena Rodrigo-Clavero ◽  
Paula-A. Bustos-Castro
Keyword(s):  
Sustainable Development ◽  
Waste Management ◽  
Circular Economy ◽  
Rural Areas ◽  
Development Framework ◽  
Starting Point ◽  
Management Plans ◽  
Good Starting Point ◽  
Depressed Regions ◽  
First Time

For the first time in the scientific literature, this research shows an analysis of the implementation of circular economy techniques under sustainable development framework in six municipalities with a depressed economy in Colombia. The analysis is based on solid waste data production at a local scale, the valuation of the waste for subsequent recycling, and the identification and quantification of the variables associated with the treatment and final disposal of waste, in accordance with the Colombian regulatory framework. Waste generation data are obtained considering three different scenarios, in which a comparison between the simulated values and those established in the management plans are compared. Important differences have been identified between the waste management programs of each municipality, specifically regarding the components of waste collection, transportation and disposal, participation of environmental reclaimers, and potential use of materials. These differences are fundamentally associated with the different administrative processes considered for each individual municipality. This research is a good starting point for the development of waste management models based on circular economy techniques, through the subsequent implementation of an office tool in depressed regions such as those studied.

“I Would Report It Even If They Have Not Committed Anything”: Social Service Students’ Attitudes Toward Minor-Attracted People

Sexual Abuse ◽  
2021 ◽  
pp. 107906322199348
Author(s):  
Allyn Walker ◽  
Robert P. Butters ◽  
Erin Nichols
Keyword(s):  
Social Service ◽  
Mandated Reporting ◽  
Mental Health Providers ◽  
Health Providers ◽  
Study Results ◽  
Survey Results ◽  
Students Attitudes ◽  
Using Data ◽  
Programs Of Study ◽  
Ethics Courses

This study explores future mental health providers’ assumptions about minor-attracted people, using data from a survey of 200 students preparing for entry into social service professions at a public university in the state of Utah. Survey results show that more than half of the students believe clients who identify themselves as pedophiles must be automatically reported to the police, which has implications for providers’ understandings about the term “pedophile,” as well as their knowledge of guidelines for when clinicians may break client confidentiality. This belief was not significantly affected by taking ethics courses, nor courses that discussed mandated reporting guidelines. Despite this finding, 91% of students did not believe that they would need to report a client who had attractions to children, but who had never committed a sexual offense against a child. The majority of students indicated a willingness to work with minor-attracted clients, and commonly indicated in comments that they wanted more information about MAPs and when to break client confidentiality in their programs of study. Study results indicate a need for education among social service students about these issues.

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