<abstract xmlns="http://www.w3.org/1999/xhtml">The paper attempts to analyze the technical possibilities of using a compressor heat pump to recover waste heat from energy processes implemented by a watercraft. The amount of waste heat that could be used for the heating needs of the vessel was estimated and the hydrothermal potential of the marine waters was assessed. The possibilities of reducing the power of the ship's power plant used to power the ship's heating installation were determined.</abstract>

Technical Aspects of Using the Heat Pump at the Ship

<abstract xmlns="http://www.w3.org/1999/xhtml">It is very common for users to create weak passwords. Currently, the majority of websites deploy password strength meters to provide timely feedback. These meters are in wide use and their effects on the security of passwords have been relatively well studied. In this paper another type of feedback is studied: a gamified approach supported by fear appeal. In this approach, users are encouraged to make passwords stronger through the use of visual and textual stories. This approach is supported by data-driven suggestions about how to improve password security as well as by fear appeal. To prove the effectiveness of this gamified password creation process, an experiment was performed in which users changed their passwords in two ways: without any feed-back, and with gamified feedback with fear appeal. To support the initial findings a questionnaire was completed by participants at the end of research.</abstract>

Using Gamification and Fear Appeal Instead of Password Strength Meters to Increase Password Entropy

<abstract xmlns="http://www.w3.org/1999/xhtml">In the paper, there has been determined an exponential element in the discrete model of the non-classical Bittner operational calculus for the <italic>n</italic>th-order forward difference.</abstract>

Exponential Sequence in the Operational Calculus Model for the <italic>n</italic>TH-Order Forward Difference

<abstract xmlns="http://www.w3.org/1999/xhtml">The paper presents a formal and legal status within the scope of design, construction and equipping the Polish Navy ships. Regulations in force in the Ministry of National Defence are not complete and have a significant impact on the possibilities and limited efficiency of building new ships.The article presents an attempt to systematise issues in terms of the construction of new ships for the Polish Navy. Fundamental attention was focused on identification of existing gaps in the regulations, as well as presenting proposals to eliminate them.</abstract>

Polish Navy Shipbuilding Regulations — Example of Neglect and Lack of Awareness. Polemical Sketch

<abstract xmlns="http://www.w3.org/1999/xhtml">The aim of the article is to show the changes taking place in the structures of logistical support of the Polish Navy, focusing on the changes in the way of supplying ships of the Polish Navy. In recent years, the Polish Navy has undergone many changes in the subject matter, starting from the liquidation of the Logistics of the Polish Navy and the Polish Navy Command, including the Management of Logistics Planning. The changes contributed to the centralization of Logistics, creating the Inspectorate for Armed Forces Support of the Republic of Poland, which focused on the main burden of tasks related to, among others, repairs, modernization and supply of ships. On the other hand, it extends the time of issuing opinions on, for example, the protocols for assessing the technical condition of military equipment (ME), which are the basis for the replacement, repair or further exploitation of the ME.</abstract>

Changes in the Logistics System of the Polish Navy

<abstract xmlns="http://www.w3.org/1999/xhtml">Detecting and recognizing text in natural scenes (e.g. streets, restaurants, shops, etc.) could be a part of an artificial intelligence system, especially with regard to the speech synthesis system. Properly detected text is passed to a recognition stage and then to the speech synthesis system, which translates text to speech. Research is carried out for the ‘Toucan Eye’ project — embedded device with artificial intelligence system able to help people with impaired sight. Due to constrained resources and abilities of embedded devices, criteria for text spotting must be met. First criterion is quality of detected and recognized regions with text and the second is time spent on both operations. Particular stages of the system and chosen methods of text spotting under aforementioned constraints are presented.</abstract>

Text Spotting in the Wild with Embedded Device

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Maritime Technical Journal

 Scientific Journal of Polish Naval Academy has been published since 1959 (in electronic version since 2004). Every year four volumes are published. In this Journal Authors publish their original and previously unpublished scientific articles in the area of technical sciences in English. All the articles contain Polish summaries and key words. All the articles are reviewed by two reviewers. The list of reviewers is published once a year. The Journal has online and printed versions. Why subscribe and read  In the Journal one can find original scientific articles from technical fields, mainly Mechanical Engineering, Electrical Engineering, Geodesy and Cartography. ‘Scientific Journal of Polish Naval Academy’ is an excellent platform for exchanging knowledge and experiences for scientists and experts. Each new issue of the Journal contains articles which present high quality research results of Polish specialists and is an excellent source of professional knowledge for the recipients.  Why submit  Our Journal offers review procedure and short deadlines between sending of the article and approval for publication. All articles are available in Open Access.  The journal has no article processing charges (APCs) and submission processing charges.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

Maritime Technical Journal

Volume 217 (2019): Issue 2 (June 2019)

Technical Aspects of Using the Heat Pump at the Ship

Using Gamification and Fear Appeal Instead of Password Strength Meters to Increase Password Entropy

Exponential Sequence in the Operational Calculus Model for the n^TH-Order Forward Difference

Polish Navy Shipbuilding Regulations — Example of Neglect and Lack of Awareness. Polemical Sketch

Changes in the Logistics System of the Polish Navy

Text Spotting in the Wild with Embedded Device

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All Volumes and Issues in this Journal

Maritime Technical Journal

Volume 217 (2019): Issue 2 (June 2019)

Technical Aspects of Using the Heat Pump at the Ship

Using Gamification and Fear Appeal Instead of Password Strength Meters to Increase Password Entropy

Exponential Sequence in the Operational Calculus Model for the nTH-Order Forward Difference

Polish Navy Shipbuilding Regulations — Example of Neglect and Lack of Awareness. Polemical Sketch

Changes in the Logistics System of the Polish Navy

Text Spotting in the Wild with Embedded Device

Search

All Volumes and Issues in this Journal

Exponential Sequence in the Operational Calculus Model for the n^TH-Order Forward Difference