Implementation of automation in vibration-isolating supports of new type for engines of sea and river vessels

In almost all areas of modern technology, the problem of vibration isolation arises, which is associated with the goal of improving the quality, reliability and productivity of various technical objects. One of the important tasks of shipbuilding is to reduce vibration levels of ship power equipment. This article proposes a non-linear control law for an electromagnetic hydraulic vibration-insulating support (EGVO) for ship power plants (SEP), which allows you to compensate for external harmonic disturbances at the SEP, which leads to an increase in their technological safety. The proposed control law of EGVO has advantages over various control laws of vibration-insulating systems of an active type for SEP. The proposed method can be used to create vibration-isolating active systems for various technical objects. The essential novelty of this method is a consistent synthesis of control laws and the creation of a single process of technological self-organization and control.

Characterization of Hermetically Sealed Metallic Feedthroughs through Injection-Molded Epoxy-Molding Compounds

Electronic devices and their associated sensors are exposed to increasing mechanical, thermal and chemical stress in modern applications. In many areas of application, the electronics are completely encapsulated with thermosets in a single process step using injection molding technology, especially with epoxy molding compounds (EMC). The implementation of the connection of complete systems for electrical access through a thermoset encapsulation is of particular importance. In practice, metal pin contacts are used for this purpose, which are encapsulated together with the complete system in a single injection molding process step. However, this procedure contains challenges because the interface between the metallic pins and the plastic represents a weak point for reliability. In order to investigate the reliability of the interface, in this study, metallic pin contacts made of copper-nickel-tin alloy (CuNiSn) and bronze (CuSn6) are encapsulated with standard EMC materials. The metal surfaces made of CuNiSn are further coated with silver (Ag) and tin (Sn). An injection molding tool to produce test specimens is designed and manufactured according to the design rules of EMC processing. The reliability of the metal-plastic interfaces are investigated by means of shear and leak tests. The results of the investigations show that the reliability of the metal-plastic joints can be increased by using different material combinations.

The Impact of Experiencing Outcomes on Delay and Probability Discounting

<p>Temporal and probability discounting refer to the decrease in subjective value of rewards that are either delayed or uncertain. Comparatively high degrees of discounting have been linked to other indices of impulsivity in both animals and humans, but the study of human discounting has primarily relied on participant reports of preferences between hypothetical outcomes. A number studies to date have illustrated not only how sensitive these preferences are to manipulations within such hypothetical procedures, but also that tasks where each consequence is actually experienced are able to capture changes in behaviour that hypothetical tasks may not. The current thesis examined temporal and probability discounting using a novel experiential discounting task in the form of a computer game-based discounting task in which the delays or probabilities of the preferred outcomes were experienced following each choice. The game had participants collect points by skiing over jumps, and discounting choices between either immediate and delayed or certain and uncertain point outcomes provided additional opportunities for point gain. Discounting was examined across four samples primarily composed of university students. Experiment 1, a test of the newly created task in two parts, assessed the most appropriate descriptive model of both temporal and probability discounting, as well as examined the relation between the two, hypothetical discounting and self-report measures of impulsivity and risk taking. Experiment 2 examined the effect of magnitude manipulations on both temporal and probability discounting. Experiment 3 examined the effect on degree of temporal discounting of manipulations to post-reward delays and access to alternative reinforcement during this period. Lastly, Experiment 4 attempted to manipulate the association between delay and risk and examined the impact of this on discounting of delayed outcomes. Participants across all studies showed systematic decreases in subjective value of both delayed and uncertain point outcomes. However, the shape of this decrease in value differed across the two types of outcomes, as did the effect of the magnitude manipulations. Furthermore, neither post-reinforcement duration, access to alternative reinforcement, nor experience with risk influenced degree of temporal discounting. The results are discussed in terms of single process accounts of discounting, the implications for individual trait interpretations of discounting and the relevance of experiential and hypothetical discounting to the construct of impulsivity.</p>

The Impact of Experiencing Outcomes on Delay and Probability Discounting

<p>Temporal and probability discounting refer to the decrease in subjective value of rewards that are either delayed or uncertain. Comparatively high degrees of discounting have been linked to other indices of impulsivity in both animals and humans, but the study of human discounting has primarily relied on participant reports of preferences between hypothetical outcomes. A number studies to date have illustrated not only how sensitive these preferences are to manipulations within such hypothetical procedures, but also that tasks where each consequence is actually experienced are able to capture changes in behaviour that hypothetical tasks may not. The current thesis examined temporal and probability discounting using a novel experiential discounting task in the form of a computer game-based discounting task in which the delays or probabilities of the preferred outcomes were experienced following each choice. The game had participants collect points by skiing over jumps, and discounting choices between either immediate and delayed or certain and uncertain point outcomes provided additional opportunities for point gain. Discounting was examined across four samples primarily composed of university students. Experiment 1, a test of the newly created task in two parts, assessed the most appropriate descriptive model of both temporal and probability discounting, as well as examined the relation between the two, hypothetical discounting and self-report measures of impulsivity and risk taking. Experiment 2 examined the effect of magnitude manipulations on both temporal and probability discounting. Experiment 3 examined the effect on degree of temporal discounting of manipulations to post-reward delays and access to alternative reinforcement during this period. Lastly, Experiment 4 attempted to manipulate the association between delay and risk and examined the impact of this on discounting of delayed outcomes. Participants across all studies showed systematic decreases in subjective value of both delayed and uncertain point outcomes. However, the shape of this decrease in value differed across the two types of outcomes, as did the effect of the magnitude manipulations. Furthermore, neither post-reinforcement duration, access to alternative reinforcement, nor experience with risk influenced degree of temporal discounting. The results are discussed in terms of single process accounts of discounting, the implications for individual trait interpretations of discounting and the relevance of experiential and hypothetical discounting to the construct of impulsivity.</p>

Transformation towards a Smart Maintenance Factory: The Case of a Vessel Maintenance Depot

The conceptualization and framework of smart factories have been intensively studied in previous studies, and the extension to various business areas has been suggested as a future research direction. This paper proposes a method for extending the smart factory concept in the ship building phase to the ship servicing phase through actual examples. In order to expand the study, we identified the differences between manufacturing and maintenance. We proposed a smart transformation procedure, framework, and architecture of a smart maintenance factory. The transformation was a large-scale operation for the entire factory beyond simply applying a single process or specific technology. The transformations were presented through a vessel maintenance depot case and the effects of improvements were discussed.

Professional Consciousness as a Subjective Component of a Personal Professional Development

The study discusses the professional development of the individual, which is a multi-faceted process. The relevance of this work is defined by development trends that radically change the essence of professions on the labour market and require an understanding of the role of career guidance and professional self-determination as a single process throughout the entire working life of an individual. The study aims to investigate professional consciousness as a subjective component of professionalism and consider the algorithm for the development of professional self-consciousness in society. The study covers the main stages of professional development of the individual as a single process. The analysis of documents (monographs, websites, statistics, academic papers, and textbooks) was the objective method for the study. The study researched and systematised the leading approaches to discovering personal potential based on the collected material and identified all types of professional competence using the analysis method. As a result, the definition of factors of professionalism creates mental models of professional activity and the professional self-consciousness of the individual. The practical value of the study discussed and analysed the stages of development and establishment of a professional individual is implementing the results in the educational process and using the provided recommendations for creating a personal programme for mastering the course on the psychology of personality and professional development.

Study on the Electrorheological Ultra-Precision Polishing Process with an Annular Integrated Electrode

Electrorheological (ER) polishing, as a new ultra-precision super-effect polishing method, provides little damage to the workpiece surface and is suitable for polishing all kinds of small and complex curved surface workpieces. In this paper, an ER polishing tool with an annular integrated electrode is developed. The orthogonal experiments are carried out on the six influencing factors of ER polishing which include the applied voltage, the abrasive particle size, the abrasive concentration, the polishing gap, the polishing time and the tool spindle speed. The influence order of these six factors on the ER polishing is obtained. On this basis, the effect of a single process parameter of ER polishing on surface roughness is studied experimentally.