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Los telares constituyen uno de los principales instrumentos para la producción textil en la Antigüedad. No obstante, su localización en el registro arqueológico es escasa y limitada. Los telares verticales de pesas son la tipología más conocida, pero no la única. Excepcionalmente, se encuentran en el registro arqueológico evidencias materiales de telares de bandas para el desarrollo de estrechas cenefas que, por lo general, presentan ricas decoraciones. Una de las principales problemáticas ha sido la identificación de estas piezas, la definición de su funcionalidad textil y la confusión existente entre los distintos tipos de telares de bandas. En consecuencia, no solo son difíciles de encontrar arqueológicamente, sino que a menudo no han sido reconocidas como instrumental textil. En este trabajo, aportamos un acercamiento a la tecnología de los telares de bandas en Hispania a partir de un nuevo hallazgo: un telar de rejilla o lizo de marco procedente de un contexto funerario recientemente intervenido en Augusta Emerita (Mérida, Badajoz). Además del análisis de la pieza, planteamos un estudio contextual que permita hacer apreciaciones cronológicas. A ello se le une el estudio antropológico del difunto varón. Esto nos ayuda a plantear y discutir interesantes apreciaciones de género respecto a la configuración social del artesanado textil. Del mismo modo, recogemos un estado actual de la cuestión sobre la tecnología del telar de lizo de marco gracias a una revisión de todas las evidencias encontradas hasta la fecha a lo largo del Imperio. Con este artículo, esperamos ahondar en este tipo de tecnologías textiles, visibilizarlas y dar a conocer su materialización en el registro arqueológico., Looms constitute one of the main instruments for textile production in Antiquity. However, their localization in the archaeological record is scarce and limited. The vertical loom with pondera is the best-known typology, but not the only one. Exceptionally, we can encounter material vestiges in the archaeological record of band weaving looms. Those looms were used for the confection of narrow repp bands that were generally, generously decorated. One of the main issues has been the identification of these pieces; the definition of their textile functionality and the existent confusion between the different types of band weaving looms. Consequently, not only are they difficult to find archaeologically, but frequently not recognized as a textile tool. In this paper we present an approach to the technology of band-weaving looms in Hispania through a new discovery: a rigid heddle or rigid heddle loom from a recent contextualized funerary context from Augusta Emerita (Mérida). Besides the analysis of the archaeological piece, we have also proposed a study of its context, hence the possibility of a chronological assessment. An anthropological study of the male deceased has been included. Thanks to the anthropological assessment, it has been possible to discuss interesting ideas regarding gender and the social organisation of textile artisans. Similarly, we have collected the state of art regarding the technology of rigid heddle-weaving thanks to a revision of the current archaeological vestiges along the Roman Empire. With this article, we hope to offer a deep look into this type of textile technology and showcase its materialization in the archaeological record.

Julia Sabin,1 Elisa Salas,2 Jesús Martín-Martínez,3 Antonio Candeliere-Merlicco,4 Francisco Javier Barrero Hernández,5 Ana María Alonso Torres,6 José Luis Sánchez-Menoyo,7 Laura Borrega,8 María Rodríguez-Rodríguez,9 Montserrat Gómez-Gutiérrez,10 Sara Eichau,11 Miguel Ángel Hernández-Pérez,12 Carmen Calles,13 Eva Fernandez-Diaz,14 Olga Carmona,15 Aida Orviz,16 Ana López-Real,17 Pablo López-Muñoz,18 Amelia Mendoza Rodríguez,19 Eduardo Aguera-Morales,20 Jorge Maurino2 1Department of Neurology, Hospital Universitario Puerta de Hierro, Madrid, Spain; 2Medical Department, Roche Farma, Madrid, Spain; 3Department of Neurology, Hospital Universitario Miguel Servet, Zaragoza, Spain; 4Department of Neurology, Hospital Rafael Méndez, Lorca, Spain; 5Department of Neurology, Hospital Clínico Universitario San Cecilio, Granada, Spain; 6Department of Neurology, Hospital Regional Universitario de Málaga, Málaga, Spain; 7Department of Neurology, Hospital de Galdakao-Usansolo, Galdakao, Spain; 8Department of Neurology, Hospital Universitario Fundación Alcorcón, Alcorcón, Spain; 9Department of Neurology, Hospital Universitario Lucus Augusti, Lugo, Spain; 10Department of Neurology, Hospital San Pedro de Alcántara, Cáceres, Spain; 11Department of Neurology, Hospital Universitario Virgen Macarena, Sevilla, Spain; 12Department of Neurology, Hospital Universitario Nuestra Señora de Candelaria, Tenerife, Spain; 13Department of Neurology, Hospital Universitario Son Espases, Palma de Mallorca, Spain; 14Department of Neurology, Hospital Universitario de Albacete, Albacete, Spain; 15Department of Neurology, Fundació Salut Empordà , Figueres, Spain; 16Department of Neurology, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain; 17Department of Neurology, Complejo Hospitalario Universitario A Coruña, A Coruña, Spain; 18Department of Neurology, Hospital Arnau de Vilanova, Llíria, Spain; 19Department of Neurology, Complejo Asistencial de Segovia, Segovia

Sai-Hong Ignatius Ou,1 Xiuning Le,2 Misako Nagasaka,1 Thanyanan Reungwetwattana,3 Myung-Ju Ahn,4 Darren WT Lim,5 Edgardo S Santos,6 Elaine Shum,7 Sally CM Lau,7 Jii Bum Lee,8 Antonio Calles,9 Fengying Wu,10 Gilberto Lopes,11 Virote Sriuranpong,12 Junko Tanizaki,13 Hidehito Horinouchi,14 Marina C Garassino,15 Sanjay Popat,16 Benjamin Besse,17 Rafael Rosell,18 Ross A Soo19 1University of California Irvine School of Medicine, Chao Family Comprehensive Cancer Center, Orange, CA, USA; 2University of Texas MD Anderson Cancer Center, Houston, TX, USA; 3Division of Medical Oncology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand; 4Department of Hematology and Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; 5Duke-NUS School of medicine, National Cancer Center Singapore, Republic of Singapore; 6Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, 33431, USA; 7NYU Langone Perlmutter Cancer Center, NY, NY, USA; 8Yonsei Cancer Center Yonsei University, Seoul, Republic of Korea; 9Department of Medicine, Division of Medical Oncology, Early Drug Development and Phase I Unit, Hospital General Universitario Gregorio Marañón, Madrid, 28007, Spain; 10Shanghai Chest hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China; 11Department of Medicine, Division of Medical Oncology, Sylvester Comprehensive Cancer Center at the University of Miami and the Miller School of Medicine, Miami, FL, 33136, USA; 12Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok, Thailand; 13Department of Medicine, Kindai University School of Medicine, Osaka, Japan; 14Department of Thoracic Oncology, National Cancer Center Hospital Tokyo, Tokyo, Japan; 15Department of Medicine, Division of Medical Oncology-Hematology, University of Chicago Medicine, Chicago, IL, USA; 16Royal Marsden Hospital, London, Imperial College, L

By analyzing otolith microchemistry, we examined the use of freshwater and marine environments by brown trout Salmo trutta L. that spawn in the Swedish River Emån and migrate to the Baltic Sea. We estimated the time juveniles spent in freshwater and the number of times the fish returned to freshwater, presumably to spawn. Twenty-six percent of the fish migrated to sea by 1 year of age. However, 13% spent less than one year in the river. Most brown trout (48%) migrated to the sea between 1 and 2 years of age. On average, brown trout, which averaged 4.4 years in age (range 3–6 years), returned to freshwater 2.3 times, and there was an inverse relationship between time spent in freshwater after hatching and the number of visits to freshwater. Our results do not support the classical life history pattern, where brown trout spend one or more years in freshwater before migrating to the sea. Here, we found evidence that part of the population leaves freshwater during their first year. While the cause for precocial migration in the River Emån is not known, our results from this permanently flowing river do not support the idea proposed for other Baltic Sea populations, where the risk of drought has been suggested to be the cause.

Over the past decade, acoustic telemetry has become commonplace in studies on fish movement and behaviour. Over small spatial scales, arrays of acoustic receivers can be used to estimate movement paths in 2- or 3-dimensions with high temporal resolutions. Despite the growing prevalence of acoustic telemetry arrays, guidelines on how to generate robust position estimates—and further utilize this data in animal movement models such as hidden Markov models or step selection functions—are sparse. As animal movement models generally require either true positions or accurately specified spatial error distributions, understanding positioning error is crucial for behavioural inference. Here, current methods of telemetry positioning are reviewed. Simulated case studies are used to highlight the effect of state space model parameter selection on positioning accuracy, and in turn, the fitting of animal movement models.

Atlantic salmon (Salmo salar), brown trout (Salmo trutta), and steelhead trout (Oncorhynchus mykiss) kelts have important conservation value for population resilience. Nonetheless, relative to other salmonid life-stages, knowledge on their behavior and survival is poor. This is especially true for kelt downstream migration in rivers fragmented by hydropower plants (HPP), even though the physiological and survival consequences are severe when functional connectivity is not provided. Here, the existing information about kelt downstream migration past HPP was summarized, beginning with an overview of iteroparous salmonid lifecycles. Then, the importance of kelts for conservation and the threats they encounter while migrating was discussed. Finally, the current corpus of peer-reviewed literature and reports focused on kelt migration in these systems was presented. Kelt studies have focused on five main themes: (1) postspawning survival, (2) migration delays before dam passage, (3) passage selection and guidance efficiency, (4) passage mortality, and (5) the swimming behaviors of kelts during migration. Overall, there was a paucity of information about kelts and several information gaps and needs for future research. This work should inform scientists and river managers on the conservation of salmonids in regulated rivers, including the development of passage solutions for safe downstream migration.

Migration is critical for life-cycle completion in diadromous fish species. River connectivity is vital in facilitating these large-scale movement events, but the extent of present-day river fragmentation can interfere with these migrations. Fish passage solutions (FPSs) are commonly implemented with the aim of improving river connectivity. In our study, we investigated the performance of two types of FPSs, spill regimes and complete dam removal, on Atlantic salmon (Salmo salar) smolt migrations. We used acoustic telemetry to monitor migration behavior and passage success of 120 wild smolts released in three different groups/sites: one group with two dams to pass to reach the river mouth, a second group with one dam to pass, and a control group without any barriers to pass (upstream of a recently removed hydroelectric dam). Smolt passage probabilities were similar for the two studied dams (87% and 86%) but showed variation in path choice, delay times, and loss rates. Passage success was influenced by several factors, such as body size, diel period, and water temperature, but not flow. Cumulative passage success to the river mouth was 61%, with most individuals being lost within lentic river stretches, either in the forebays of hydroelectric power stations or in naturally wide river stretches. Within the recently rehabilitated river sections (post dam removal), passage speeds were significantly faster than all other sections of the river (post-rehabilitation x = 56.1 km/day) with significantly faster speeds compared to pre-rehabilitation (pre-x = 28.0 km/day). Our findings provide valuable information on the benefits of dam removal and highlight the need for further rehabilitation measures in upriver reaches where barriers still affect downstream passage.

Hydropower plants commonly impede the downstream migration of Atlantic salmon (Salmo salar) kelts. Thus, understanding the effects of hydraulic conditions on kelt behaviour and passage performance at dams is crucial for developing effective mitigation measures. In this study, we investigated the influence of hydraulic conditions on kelt passage performance and swimming behaviour at a Norwegian hydropower plant. We combined biological data from 48 kelts collected via acoustic telemetry with hydraulic data modelled using computational fluid dynamics. We assessed kelt passage performance using metrics such as time-to-pass, total number of detections, and total number of detections per day. Additionally, we analysed swimming depths and speeds in relation to the hydraulic conditions created by different dam operating conditions. We found that the dam operation schedule impacted the kelts’ ability to find a route past the dam. Though kelts could have passed the dam throughout the study period via a submerged pipe at the dam (which had seemingly sufficient discharge for the kelts to find), 98 % of the kelts instead waited for a spill gate to open partway through the study period. The swimming depth analysis indicated diel variation, with kelts swimming nearer to the water surface during the night. We found that swimming speed increased with increasing kelt body length, particularly under high turbulence kinetic energy and during the day. Furthermore, kelts swam faster as water velocity increased, but slowed down again as turbulence intensity increased. Our findings reveal the effects of hydraulic conditions and dam operations on the migration behaviour of Atlantic salmon kelts. This provides valuable insights for developing strategies to optimise dam operations and improve fish passage performance, including the need to spill enough water to increase passage success and will contribute to sustainable management of Atlantic salmon populations in regulated rivers.

Datum: 2024-05-29 Nivå: Kandidatuppsats i Företagsekonomi, 15 hp Institution: Akademin för Ekonomi, Samhälle och Teknik, Mälardalens Universitet Författare: Valeria Calles Selma Migchelsen Emilia Shafipour (00/08/30) (01/09/05) (02/10/27) Titel: Skillnader i Ledarskapsstilar mellan Manliga och Kvinnliga Ledare inom Organisationer: En kvalitativ studie som kartlägger ledares självuppfattningar Handledare: Konstantin Lampou Nyckelord: Ledarskapsstilar, autokratiskt ledarskap, demokratiskt ledarskap, könsstereotyper gällande ledarskapsstilar Forskningsfråga: Hur skiljer sig ledarskapsstilar mellan könen inom organisationer? Syfte: Syftet med vårt projekt är att undersöka om det finns några skillnader mellan kvinnliga och manliga ledare, utifrån ledarnas egna perspektiv och uppfattningar. Vi vill ta reda på om det finns vissa ledarskapsstilar som är vanligare hos män än hos kvinnor och vice versa. Metod: En kvalitativ studie har utförts där en abduktiv ansats har använts. För att samla in empiri har semistrukturerade intervjuer genomförts via Zoom och därefter har sekundärkällor och vetenskapliga artiklar använts för att stärka studiens empiri och slutsats. Slutsats: Slutsatsen som går att dra efter att ha undersökt ledarskapet mellan fem kvinnor och fem män är att det inte finns stora skillnader mellan kvinnligt och manligt ledarskap. Vår forskning har visat att både män och kvinnor generellt föredrar den demokratiska ledarskapsstilen mer än den autokratiska, men både männen och kvinnorna hade åtminstone en autokratisk egenskap. Detta visar att den autokratiska ledarskapsstilen inte är tillhörande det manliga könet och att den demokratiska ledarskapsstilen inte är tillhörande det kvinnliga könet., Date: 2024-05-29 Level: Bachelor thesis in Business Administration, 15 hp Institution: School of Business, Society and Engineering, Mälardalen University Authors: Valeria Calles Selma Migchelsen Emilia Shafipour (00/08/30) (01/09/05) (02/10/27) Title: Differences in Leadership Styles between Male and Female Leaders in Organizations: A qualitative study that identifies leaders self-perceptions Supervisor: Konstantin Lampou Keywords: Leadership styles, autocratic leadership, democratic leadership, gender stereotypes on leadership style Research question: How do the leadership styles differ between genders within organizations? Purpose: The purpose of this study is to investigate whether there are any differences between female and male leaders, based on the leaders' own perspectives and perceptions. We want to find out if there are certain leadership styles that are more common in men than in women and vice versa. Method: A qualitative study has been made by using an abductive approach. In order to collect empirical data, semi-structured interviews have been conducted via Zoom. Secondary sources and scientific articles have been used to strengthen the study's empirical data and conclusion. Conclusion: The conclusion that can be drawn after examining the leadership between five women and five men is that there are no major differences between female and male leadership. Our research has shown that both men and women generally prefer the democratic leadership style more than the autocratic, but both men and women had at least one autocratic trait. This shows that the autocratic leadership style does not belong to the male gender and that the democratic leadership style does not belong to the female gender.