Mostostal Warszawa (Poland)

Accurate and timely construction progress updates are vital for effective project management. Drone-based data collection offers a cost-effective, efficient method for generating point cloud scans to visualize and track progress. However, limitations in drone flight data collection, which captures only surface-level scenes, can lead to undetected constructed elements during long intervals between flights, resulting in inaccurate progress assessments. This study introduces an innovative approach that integrates multimodal information with vision language models (VLMs) to infer construction progress. A case study in Poland utilized periodic drone-generated point cloud scans to monitor a construction project. The proposed method employs point proximity metrics and occlusion analysis, leveraging VLM-driven spatial and logical reasoning to address data gaps and infer occluded progress. Results validate the efficacy of this multimodal VLM-driven approach. Future work will focus on completing the overall workflow.

The integration of AI and human-centered technologies has opened new avenues for improving workplace safety, particularly in high-risk environments such as construction sites. Ladder-related accidents, often caused by improper body posture or unsafe practices, remain a significant concern. These practices -commonly adopted by blue-collar workers attempting to save time during finishing tasks at height- are among the most frequent unsafe practices on construction sites. They significantly increase the risk of falls, and research indicates that even falls from relatively low heights are the leading cause of injury among construction workers. Such behaviors may result in falls from height, and research shows that falls from relatively low heights are the most common cause of injuries among construction workers. Due to the limited availability of real-world ladderwalking data and the challenges of safely simulating such behaviors, we curated a dataset from YouTube videos, which, while not ideal for direct safety guidance, provides valuable insights into ladder-walking techniques. Using the MMAction2 framework, we propose a comprehensive methodology that involves experimenting with multiple state-of-the-art models, selected for their effectiveness in recognizing human motion and detecting safety-critical actions in workplace environments (e.g., Temporal Segment Networks and SlowFast), optimizing hyperparameters, and evaluating performance using metrics such as accuracy. Our approach leverages action recognition to enable real-time detection of unsafe ladder behaviors, thereby reducing the risk of accidents in hazardous construction environments. This work enhances construction safety by providing a scalable, automated solution for hazard mitigation. Additionally, it highlights the broader potential of AI technologies in occupational health monitoring and risk prevention within the construction industry.

O leite humano tem grande importância na alimentação do lactente, isso se deve ao fato dele ser, indiscutivelmente, o alimento mais completo e seguro que os bebês podem receber. Este estudo foca em comparar as propriedades no valor calórico e na acidez do leite humano do Banco de leite localizado na cidade de Juiz de Fora (MG) com a técnica de Espectroscopia no Infravermelho Médio com Transformada de Fourier (FT–MIR). Para tal foram consideradas amostras de leite humano, 129 amostras de leite cru e 129 amostras de leite processado/pasteurizado, com 6 amostras de colostro, 16 transição e 107 no estágio final maduro. A ferramenta estatística usada para discriminar as amostras foi o método dos mínimos quadrados parciais (PLS), para avaliações quantitativas. Foram obtidas calibrações dos espectros infravermelhos com a acidez Dornic e o valor nutricional. Além disso, a técnica se mostrou sensível para agrupar leite em diferentes estágios de lactação. Com os resultados, a espectroscopia no Infravermelho provou ser rápida e sensível, dessa forma bastante útil para analisar as amostras de leite humano bem como caracterizar as propriedades do leite em acidez e Kcal.

According to Statistics Poland’s data, the situation of young people in the Polish labour market has improved significantly in recent years. Therefore, on the one hand, it is easier for young people entering the labour market to find a job, and on the other, it is increasingly difficult for employers to keep such people in their organisation. The aim of this study is to identify and assess individual characteristics of young workers and work-related factors that affect the length of the time they spend in their first job. The study is based on data for 2019 and 2020 from Statistics Poland’s Labour Force Survey. It is of key importance in the research on the professional activity of young people to take into account in modelling the high volatility of their characteristics over time. Therefore, we used the Cox model with time-variant variables to identify factors of risk of quitting a young employee’s first job. One of the findings of the study was that people with higher education were more likely to quit their jobs than people with lower-level education. As regards work-related factors, in addition to the type of employment contract, the weekly working time and holding or not a managerial position were the important ones affecting the decision to continue or quit. Furthermore, groups of employees homogeneous in terms of the duration of their first job were identified using survival trees. We found that employees with fixed-term contracts were less likely to quit their jobs than those with permanent contracts, but working part-time.

Artykuł poświęcony jest malarzowi Marcelemu Januszewiczowi (1805–po 1864) i jego rodzinie. Przyjechawszy na studia do Wilna z Podola w młodym wieku, wiele lat poświęcił na rysowanie zabytków miasta. Jego ojciec Marcin Januszewicz (ok 1780–po 1842) również studiował na Uniwersytecie Wileńskim u Franciszka Smuglewicza i Jana Rustema; znany był jako utalentowany kopista i konserwator obrazów. Trzeci artysta z rodziny – Stanisław (1834–po 1864), syn Marcela, urodził się w Wilnie, był utalentowanym rysownikiem, który w młodości kopiował prace ojca. Najobszerniej omówiona została droga życiowa Marcela Januszewicza, która doprowadziła go do szkoły w prowincjonalnym Mołodecznie, co miało fatalny wpływ na losy artysty. Biografie twórców z rodziny Januszewiczów zostały uzupełnione o nowe dane pozyskane w archiwach, a niektóre fakty lub daty wyjaśniono i doprecyzowano. Istotnym odkryciem jest to, że prawdziwym imieniem Marcina Januszewicza było Marceli, którego używał w dokumentach osobistych, natomiast w środowisku uniwersyteckim nazywano go Marcinem. Fakt ten jest istotny dla interpretacji materiału źródłowego. Druga część artykułu poświęcona jest omówieniu twórczości Marcela Januszewicza młodszego, kwestiom autorstwa oraz prezentacji nowo przypisanych mu dzieł. Akwarele z cyklu Starożytności miasta Wilna omawiane są w kontekście związków artysty z Eustachym Tyszkiewiczem. Podsumowując dane z różnych źródeł, można stwierdzić, że choć Januszewicz nie był członkiem Komisji Archeologicznej, miał bliskie związki z działalnością Muzeum Starożytności.

Članak se bavi fenomenom post-istine i zavjereništva i obuhvaća teorijsko istraživanje nastalo unutar šireg umjetničkog projekta. Projekt je potaknut eksplozijom alternativnih činjenica i relativizacijom pojma istine te ukratko pruža pregled različitih čimbenika koji su utjecali na suvremenu društvenu klimu.

U vremenu neposredno nakon ukidanja Vojne krajine 1881. godine i pripojenja ovoga teritorija Hrvatskoj pojavljuju se prve novine na teritoriju tadašnje Ličkokrbavske županije koja je ustrojena 1886. godine. Vrijeme nakon ukidanja Vojne krajine je vrijeme prilagodbe civilnom načinu života poslije vremena kada je ovaj teritorij predstavljao branu turskim prodorima u Hrvatsku. U takvim okolnostima gospodarske prilike i društveni život bili su prilagođeni vojničkom načinu razmišljanja. Ukidanjem Vojne krajine 15. srpnja 1881. godine ona je pripojena Kraljevini Hrvatskoj i Slavoniji kao autonomnoj pokrajini koja je imala obilježja državnosti u sastavu Zemalja krune sv. Stjepana. U Kraljevini Hrvatskoj i Slavoniji kao dijelu Austro-Ugarske što je određeno Austro-ugarskom nagodbom od 1867. godine i pod vlašću Franje Josipa I. (1848. – 1916.) otvara se mogućnost za stvaranje županija na tom teritoriju, a samim time i Ličko – krbavske županije. Tema ovoga rada je prikaz stanja u Ličko-krbavskoj županiji i posebno u njenom središtu, Gospiću, na prijelazu iz 19. u 20 stoljeće. Prije svega gospodarskih prilika, ali i društvenog i kulturnog života, odnosno uvjeta u kojima se pojavljuju prve novine koje su i glavni izvor informacija za ovaj rad.

Praca jest pierwszym tłumaczeniem na jezyk polski drugiej homilii o Dawidzie i Saulu św. Jana Chryzostoma. Przekład został opatrzony komentarzami oraz poprzedzony poglądowym życiorysem św. Jana Chryzostoma, jak również został zarysowana kwestia datacji omawianego tu utworu.

Research activities aiming at understanding selected items of steel joints behavior in the persistent and accidental situation has been conducted at Rzeszow University of Technology. The following subjects were considered: the behavior of beam splices of beams in large size steel industrial structures and especially the assessment of safety to use the component method of EN 1993-1-8 to design such joints; the role of joints in assurance survival of steel-framed structures subjected to accidental loading, especially influence of joints geometrical and material properties on their behavior in column loss scenario; estimation of actual values of available rotation capacity of selected steel joints, to be used in robustness analysis of steel frames. An investigation was provided by experimental tests of bolted end-plate joints, advanced FEA with the use of validated models, and wide parametric studies. Results of the above-mentioned researches can find application in design practice.