scholarly journals Application of Measurement Sensors and Navigation Devices in Experimental Research of the Computer System for the Control of an Unmanned Ship Model

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1312 ◽  
Author(s):  
Tadeusz Szelangiewicz ◽  
Katarzyna Żelazny ◽  
Andrzej Antosik ◽  
Maciej Szelangiewicz

Unmanned autonomous transport vessels (MASS) are the future of maritime transport. The most important task in the design and construction of unmanned ships is to develop algorithms and a computer program for autonomous control. In order for such a computer program to properly control the ship (realizing various functions), the ship must be equipped with a computer system as well as measurement sensors and navigation devices, from which the recorded parameters are processed and used for autonomous control of the ship. Within the framework of conducted research on autonomous ships, an experimental model of an unmanned ship was built. This model was equipped with a propulsion system not commonly used on transport vessels (two azimuth stern thrusters and two bow tunnel thrusters), but providing excellent propulsion and steering characteristics. A complete computer system with the necessary measuring sensors and navigation devices has also been installed in the model of the ship, which enables it to perform all functions during autonomous control. The objective of the current research was to design and build a prototype computer system with the necessary measurement sensors and navigation devices with which to autonomously control the unmanned ship model. The designed computer system is expected to be optimal for planned tasks during control software tests. Tests carried out on open waters confirmed the correctness of the operation of the computer system and the entire measurement and navigation equipment of the built model of the unmanned transport vessel.

1973 ◽  
Vol 19 (1) ◽  
pp. 27-30 ◽  
Author(s):  
G Phillip Hicks ◽  
R A Ziesemer ◽  
Norbert W Tietz

Abstract An online computer program to monitor kinetic enzyme assays is described. The program analyzes the kinetic data in a manner similar to the way a technologist handles data in a manual procedure, taking into account the lag phase, substrate depletion phase, and linear portion of the rate curve. Thus, complete automation of even complex kinetic assays has been made practical. The program has been implemented for routine use in a clinical laboratory computer system ("LABCOM"), and the results correlate well with those obtained by established methods of manual data-handling procedures


Author(s):  
Brandon Stoick ◽  
Zhenyang Luo ◽  
Dibyanshu Tibrewal ◽  
Kevin Setterstrom ◽  
Andrew Jones ◽  
...  

Author(s):  
Robby Nieuwlaat ◽  
Lowiek Hubers ◽  
Alex C Spyropoulos ◽  
Alexander Stehouwer ◽  
Harriette G Van Spall ◽  
...  

Background In patients receiving warfarin, the quality of anticoagulant control as measured by the time-in-therapeutic range (TTR) for the International Normalized Ratio (INR) is a key determinant of risk for thromboembolic and bleeding events. Computer programs can assist physicians in optimizing TTR, but are expensive. The purpose of this study was to determine whether a computer system (DAWN AC) was non-inferior to a two-step manual nomogram used in a hospital anticoagulation clinic. Methods Stable anticoagulated patients receiving warfarin with target INR range 2-3 in the anticoagulation clinic were randomized to management with the newly acquired DAWN AC computer system or the clinic's standard of care, a simple manual dosing nomogram. After an initial run-in phase, study data collection started on February 1 st 2010 and was completed on August 8 th 2010. Primary outcome was the mean TTR calculated by the Rosendaal linear interpolation method. The non-inferiority margin was set at 4.5% lower TTR for DAWN AC compared with the nomogram. Results Of the 1,298 patients initially randomized, 1,127 were still managed by the clinic after the run-in phase and entered the study on February 1 st ; 564 were managed with DAWN AC, and 563 with the manual nomogram. The mean age of study patients was 69 ± 14 years and 62% were male. Main indications for anticoagulation were atrial fibrillation (48%) and prosthetic heart valves (25%). Mean follow-up was 172 days, encompassing 8,344 INR values and 155,041 patient days. Adherence to recommended warfarin doses was higher in the DAWN AC than in the nomogram group (99 vs. 90%; p<0.0001), the average interval between INR measurements was similar in the two groups (21 ± 12 vs. 21 ± 13 days; p=0.1987). In the primary analysis, mean TTR in the DAWN AC group was non-inferior to mean TTR in the nomogram group (71.0% ± 23.3 vs. 71.9% ± 22.9; non-inferiority p=0.0052). Conclusion Among stable patients receiving warfarin with a target INR of 2-3 in an anticoagulation clinic, quality of anticoagulant control with the DAWN AC computer program was non-inferior to a simple two-step manual dosing nomogram. The nomogram could be a useful dosing tool for physicians without access to a computerized warfarin dosing system.


1986 ◽  
Vol 30 (12) ◽  
pp. 1206-1206
Author(s):  
Carol Bergfeld Mills

The objective of this symposium is to provide different perspectives on how screen design in computer systems can be improved. Screen design refers to the layout and format of all computer screen information. This includes tutorials, help panels, prompts, and messages. Since screen design affects how easily information can be retrieved or stored, it determines how effectively the computer system can be used. Finding ways to improve screen design should be an important goal in the development of virtually all interactive programs. Achieving good screen design is becoming even more important as programs are used by more people, particularly those not familiar with computers, and as more information is presented online. The presenters for this symposium provide a wide range of views, experiences, and approaches for improving screen design. As a result, they each contribute unique methods and suggestions. Annette Bradford provides guidelines and views of screen design based on her work as an information developer. Joe Dumas provides views of screen design based on his work as an interface analyst. David A. Schell provides views on usability testing of screen design. Thomas Tullis provides an alternative way of testing screen design with his research-based computer program.


2013 ◽  
Vol 837 ◽  
pp. 416-421 ◽  
Author(s):  
Krzysztof Kalinowski ◽  
Cezary Grabowik ◽  
Iwona Paprocka ◽  
Wojciech M. Kempa

The modeling phase of the computer system development is one of the most important elements affecting the final success of the created software. Structures developed at this stage are the basis for the design and implementation of computer program code. The paper presents the general model of static structures (main classes and their relationships) of production scheduling system supporting discrete and multiassortment production. In the description of the object-oriented model a graphical systems and specifications modeling language notation UML was used.


2021 ◽  
pp. 950-959
Author(s):  
I. Zablotskyi ◽  
V. Pereimybida

The last decades have been characterized by the rapid development of computer technologies and its widespread use in various fields of science, education, production, etc. The sphere of law enforcement is no exception, including the use of these technologies for conducting expert research. At the same time, certain problems of digitalization (translation of information into digital form) of technical and forensic studies and, in particular, studies of handwriting studies, are still observed. The article deals with the issue of the possibility of using the computer system AutoCAD in determining the identification signs in the handwriting examination of signatures. Comparing the numerical values of handwriting features obtained for a number of samples and for the objects under study, at the stage of comparative research, it is possible to establish whether the resulting numerical values characterizing some individual graphic features of the signature under study do not go beyond the variability limits determined for samples of signatures of a certain person Perhaps, by deepening and developing this method, it will be possible to identify such parameters that are characteristic only of the signature of a certain person. It should be noted that the proposed method of numerical expression of some graphic features of signatures does not cover all the variety of these features. These are signs related to the shape of the movements, direction, curvature, sequence of execution, the method of beginning and ending movements, etc. Such incompleteness needs to be carefully refined and opens wide opportunities for further research.


1972 ◽  
Vol 9 (2) ◽  
pp. 152-158 ◽  
Author(s):  
J. E. Smith ◽  
M. D. McGavin ◽  
R. Gronwall

Retrieval of information is essential for pathology departments, but it should not be such a burden to staff members that retrieval is discouraged. The computer system presented in this paper requires a minimum amount of time and effort yet provides excellent retrieval information. Diagnoses (in English) are punched into Hollerith cards. Misspelled words and inappropriate diagnoses are detected by comparing these cards with a glossary of acceptable terms using a computer program (CARD-CHECK). Another program, PATH-RECORD, produces an alphabetical listing of all diagnoses, accompanied by case numbers subdivided by species.


1984 ◽  
Vol 21 (02) ◽  
pp. 119-133
Author(s):  
A. Colombo ◽  
B. Chilo'

This paper describes the methodologies adopted by the Italian Ship Research Center to predict propeller-induced pressures. An outline of the developed computer program is given, and calculated pressure amplitude results for two ships are compared with the experimental values obtained from full-scale measurements. In particular, calculated pressure results, produced by three different propeller design solutions at several points on the stern of a new-generation single-screw roll-on/roll-off containership, are discussed and compared with the same quantities measured both on a ship model in the Depressurized Towing Tank of the Netherlands Ship Model Basin and on the full-scale ship fitted with the selected propeller.


2019 ◽  
Author(s):  
Doni winata

Basic Data (Database) Basic data (English: database) is a collection of information stored on a computer systematically so that it can be used on a computer program to obtain information from the database. Software used to manage and release queries (databases) is called a management database system (database management system, DBMS).Computer system security in the Database is categorized in several aspects, namely: 1. Privacy / Confidentiality2. Integration3. Authentication4. Availability5. Nonrepudiation6. Access control


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