This paper presents a comparative analysis of ballast water treatment technologies, along with a detailed evaluation of the selection of treatment equipment, calculations of hydraulic pressure loss, and a theoretical layout of the equipment. The technology analysis assesses 13 different treatment methods based on six criteria for installing such systems in the space-restricted engine room, aiming to mitigate the threat posed by untreated ballast water to marine life. The selected technologies are filtration and ultraviolet (UV) as the primary and secondary ballast water treatment technologies. These methods ensure efficient, rapid, and environmentally friendly ballast water treatment.
Another study component focuses on selecting and integrating the ballast water treatment system with the chosen technologies. It was determined that the PureBallast 3.2 Compact Flex ballast water treatment system, supplied by Alfa Laval, would be installed, offering a capacity of 85 m³/h and recognised as one of the world’s leading providers of high-quality water treatment solutions. Given the installation of the new system on board, hydraulic pressure loss calculations were conducted to assess whether the existing ballast pumps on the ship possess adequate capacity to support the treatment system. The results indicate that both pumps are insufficient to supply ballast water through the system at the required pressure. Practical solutions could involve replacing the impellers, adjusting the flow rate, or replacing the pumps.
Šiame straipsnyje aptariame dirbtinio intelekto ir mokymosi analitikos naudojimo situaciją ir galimybes Lietuvos bendrojo ugdymo mokyklose. Nacionalinė švietimo agentūra yra sudariusi 2020 m. ir 2021 m. Lietuvos bendrojo ugdymo mokyklose naudojamų skaitmeninių mokymo(si) priemonių sąrašą . Tyrime kėlėme klausimą kokia dalis siūlomų skaitmeninių mokymo(si) priemonių naudoja dirbtinį intelektą ir mokymosi analitiką. Atlikus antrinę Nacionalinės švietimo agentūros sudarytame skaitmeninių mokymo(si) priemonių sąraše teikiamų 244 [dviejų šimtų keturiasdešimt keturių] priemonių analizę, galime teigti, kad iš 244 skaitmeninių mokymo(si) priemonių tik keturios taiko dirbtinį intelektą. Didžioji dalis skaitmeninių mokymo(si) priemonių yra vienakryptės, kurios skirtos tik mokomojo turinio perdavimui, jos nekaupia duomenų apie besimokantįjį ir grįžtamosios informacijos negauna nei mokinys, nei mokytojas. Dauguma skaitmeninių mokymo(si) priemonių, kurios kaupia statistiką yra mokamos arba iš dalies mokamos.
Pub. online:18 Jun 2025Type:Book ReviewOpen Access
Journal:Tiltai
Volume 94, Issue 1 (2025), pp. 242–244
Abstract
Brigita Kreivinienė. Sensorinės dietos kortelės. Metodinė priemonė. 2025. Iliustracijų autorė Urtė Kraniauskaitė. Klaipėdos universiteto leidykla. Ne visos metodinės priemonės tampa mokslininkų dėmesio objektu ir pristatomos moksliniuose žurnaluose. Dažniausiai tai praktikams skirta platforma. Ši metodinė priemonė sudaro galimybes mokslininkams tyrinėti vaikų ir jaunuolių sensorinius poreikius įgyvendinančias inovatyvias prieigas, skatina geriau suprasti neurologinių sutrikimų raišką bei sensorinių poreikių įgyvendinimo paieškas. Klaipėdos universiteto leidykloje publikuota ir pristatyta metodinė priemonė vaikams ir jaunuoliams, kurie turi individualios pagalbos poreikių, „Sensorinės dietos kortelės“ – tai inovatyvi sensorinių poreikių realizavimo praktikoje prieiga. Sensorinės dietos kortelės skirtos sensorinių poreikių turintiems vaikams ir jaunuoliams, kurių kasdieniam socialiniam dalyvavimui būtina šiuos poreikius patenkinti.
Ne visos metodinės priemonės tampa mokslininkų dėmesio objektu ir pristatomos moksliniuose žurnaluose. Dažniausiai tai praktikams skirta platforma. Ši metodinė priemonė sudaro galimybes mokslininkams tyrinėti vaikų ir jaunuolių sensorinius poreikius įgyvendinančias inovatyvias prieigas, skatina geriau suprasti neurologinių sutrikimų raišką bei sensorinių poreikių įgyvendinimo paieškas. Klaipėdos universiteto leidykloje publikuota ir pristatyta metodinė priemonė vaikams ir jaunuoliams, kurie turi individualios pagalbos poreikių, „Sensorinės dietos kortelės“ – tai inovatyvi sensorinių poreikių realizavimo praktikoje prieiga. Sensorinės dietos kortelės skirtos sensorinių poreikių turintiems vaikams ir jaunuoliams, kurių kasdieniam socialiniam dalyvavimui būtina šiuos poreikius patenkinti. Kortelių grafinio dizaino ir iliustracijų autorė – Urtė Kraniauskaitė.
Journal:Tiltai
Volume 94, Issue 1 (2025), pp. 227–241
Abstract
The article analyses the issue of the seasonality of tourism, and examines whether cultural activities could mitigate this problem in the famous Lithuanian resort of Neringa. Research results from other countries indicate that this is quite an effective strategy for reducing seasonality. The study aims to explore the region’s seasonal challenges and identify cultural events that could help alleviate the seasonality of tourism in Neringa. It employed a quantitative survey and descriptive statistics for data analysis. The findings reveal that the seasonality of tourism in Neringa can be reduced by increasing the number of festivals and concerts, creating tourism packages that include cultural events, and organising these events to leverage the connection between nature and culture.
Journal:Tiltai
Volume 94, Issue 1 (2025), pp. 214–226
Abstract
Caring professionals are one of the largest groups working in the field of human services. Important personal qualities in this area include strong communication skills, the ability to empathise with individuals’ experiences and manage one’s own emotions, a sense of responsibility, patience and helpfulness, and self-confidence. This article compares attitudes towards professional activity between two caring professions: social workers and pastoral care professionals. The results of the survey revealed that both groups have similar views on the specifics of their work, with more noticeable differences in attitudes related to spirituality. This aspect is significantly more important for pastoral care professionals than for social workers, although the ultimate goal of both professions remains the same: providing professional support to those in need.
Journal:Tiltai
Volume 94, Issue 1 (2025), pp. 196–213
Abstract
With the Second Vatican Council (1962–1965), the Catholic Church reintroduced the ministry of the permanent diaconate. Since then, ministers have been living and working in many regions of the world, now also in Lithuania. What is their mission? How will they have a lasting and fruitful impact? This article clarifies which biblical sources of diakonia and diaconate and which early Church texts can provide orientation, and raises the urgent question of a diaconate for women, as only men have been admitted to this ministry to date. This article goes on to examine those sources that can be considered fundamental for the reintroduction of this ministry by the Second Vatican Council, before turning to the Amazon Synod initiated by Pope Francis. The resulting synodal and post-synodal documents are presented, discussed and taken further, towards the vision of a Diaconal Church.
Journal:Tiltai
Volume 94, Issue 1 (2025), pp. 173–195
Abstract
In the article, a qualitative study aims to reveal the possibilities for applying mediation as a method to empower clients in making decisions in conflict situations in social work. Mediation initially emerged in Lithuanian society in the judicial sphere, but entirely new opportunities have begun to take shape in social work. The analysis of the participants’ reflective experiences reveals that social mediation is gradually becoming a competence or specialisation for social workers. Active listening to the client, their involvement in the mediation process, where equality and openness between the conflicting parties prevail, opens up opportunities for the client’s personal transformation process, aimed at empowering them to take responsibility for the process, seek solutions, and adhere to them. The analysis shows that mediation influences clients’ empowerment to make decisions in conflict situations in social work, and enables them to act in real life as well.
Journal:Tiltai
Volume 94, Issue 1 (2025), pp. 153–172
Abstract
The article reveals the phenomenon of alcohol dependence and assesses the situation of people in a situation of dependence who seek support. In this context, the authors assess the impact of social work interventions on recovering health and the improvement of the quality of life at mental care centres. The study reveals that social workers face many challenges in their work, including professional burnout, emotional exhaustion, and strategies for maintaining motivation in addicts in the context of social stigma towards these people. The emotional burden of working with individuals who often suffer from repeated relapses is presented as a critical problem that needs to be addressed by better support measures for specialists. The article reveals the difficulties of interdisciplinary team cooperation due to resource limitations and professional differences. In order to improve the effectiveness of social work interventions, it is emphasised that the support and participation of relatives, friends, colleagues and neighbours in the process of recovery and integration into society allow social workers to seek innovative intervention methods in solving the problem of alcohol dependence in society.
Journal:Tiltai
Volume 94, Issue 1 (2025), pp. 127–152
Abstract
Volunteering is an important resource for non-governmental organisations, but a trend in declining volunteer engagement is observed, with volunteers not staying in organisations for long. This encourages researchers to analyse and understand the impact of volunteers’ personal factors on their activities. The purpose of the study was to analyse the interaction between emotional support line volunteers’ self-efficacy and their choice of stress coping strategies. A quantitative study was conducted. The study involved 90 women, aged 26 to 66, volunteering for emotional support lines. To assess the self-efficacy of emotional support line volunteers, the Volunteer Self-Efficacy Scale developed by the Youth Line Volunteer Preparatory Course Programme (Bagdonienė et al., 2008) and by Youth Line Supervisor A. Semokaitė (2009) was used. The Stress Coping Questionnaire, developed by Grakauskas and Valickas (2016), was used to evaluate volunteers’ stress coping characteristics. Participants were also asked socio-demographic questions about their gender, age, education, marital status, work activity/employment, monthly income, and volunteering duration. The results of the study revealed that emotional support line volunteers with higher self-efficacy more often chose social support and problem-solving strategies to cope with stress, and less often emotional expression and release strategies.