156 research outputs found
Organisering av ekonomiskt bistånd – Perspektiv på en integrerad och en specialiserad kommun
No full textAuthor: Merima Colak Title: Organization of financial assistance - Perspective on an integrated and a specialized municipality [translated title] Supervisor: Håkan Johansson Assessor: Staffan Blomberg The purpose of this study was to examine how specialized and integrated social services manage their social assistance. In addition to this the aim was to examine how social workers and officials working within these two forms of organizations experience discretion. Furthermore, a goal of this paper was also to examine if the social workers felt that any of these two organizational forms had any impact on the workload and how that in such case manifested. The study was conducted through a qualitative research method. Six social workers and officials were interviewed for the study. The results from the study demonstrated that the employees in the integrated organization had more general work tasks and that those in the specialized organization had their tasks divided on different units that were more specialized. Findings also showed that employees in each municipality interpret discretion differently. The social workers from the integrated organization interpreted discretion in terms of being able to affect their client’s case. The social workers from the specialized organization, on the other hand, defined discretion as being able to influence their own daily work tasks. Conclusively, the study showed that workload exists in both municipalities and that it was manageable in each of the municipalities, the workload was however higher in the specialized one but it was no burden on the employees in neither the specialized nor the integrated. Key words: Discretion, organizational structure, integrated and specialized organizations, social assistance, workload. Key words: handlingsutrymme, organisationsstruktur, integrerade och specialiserade organisationer, ekonomiskt bistånd, arbetsbelastning
Determination and mapping of cadmium accumulation in plant leaves on the highway roadside, Turkey
No full textThis study investigates cadmium (Cd) accumulation in the plant leaves of juglans regia (walnut) and cydonia oblanga (quince) trees related to traffic emissions on the highway roadside. The plant leaf samples were collected from 20 sites on the D-100 Highway roadside and washed with deionized water before analyzed. Determination of Cd was carried out using an inductively-coupled plasma-mass spectrometer after microwave digestion of the samples. Cd concentration on the plant leaves was found to be between 0.04-0.11 mg/kg. In order to determine the traffi c-based emissions, vehicles were counted and an emission inventory was prepared. 0.18 tons of Cd was found to be delivered into the atmosphere every day. Cd accumulation depends on traffic density because there were no residential area and industrial plants. The distribution of Cd accumulation caused by traffic emissions was mapped by using a geographic information system (GIS). The maps showed that the Cd accumulation was high in the areas near the highway and then gradually decreased by moving away from the highway
Comparative analysis of on-load tap changing (OLTC) transformer topologies
No full textOld - EWI-ESE-DC&S DC systems & StorageElectrical Power Processin
Search for very-high-energy emission from pulsars and tests of Lorentz invariance using the MAGIC telescopes
No full textDesde su descubrimiento, los púlsares han sido un laboratorio esencial en muchas ramas diferentes de la astrofísica y la física porque son objetos ultra densos, de giro rápido y emisores de múltiples longitudes de onda. Han ampliado nuestra comprensión de la evolución estelar y los estudios de objetos compactos, así como temas de física fundamental como la relatividad general y el modelo estándar. Los mecanismos de emisión de los púlsares aún no se conocen del todo. Aunque la historia de los estudios de púlsares en bandas de radio se remonta a la década de 1960, los estudios de púlsares con rayos gamma de muy alta energía son relativamente más recientes. Por lo tanto, detectar nuevos púlsares y aumentar nue stro conocimiento sobre los descubiertos juega un papel crucial en la astrofísica de púlsares. Los telescopios Cherenkov son excelentes sistemas para estudiar fotones de muy alta energía provenientes de los púlsares. Debido al hecho de que los púlsares son fuentes débiles en comparación con otras fuentes de rayos gamma, como los núcleos galácticos activos o las explosiones de rayos gamma, la calidad de los datos es de gran importancia para los resultados del análisis de datos, y uno de los efectos más considerables proviene de la condiciones atmosféricas. Por lo tanto, los sistemas de escaneo atmosférico como los Raman LIDAR que trabajan con los telescopios Cherenkov son sistemas cruciales para el análisis de datos. El enfoque principal de este estudio son los estudios de púlsar con los telescopios MAGIC y el uso de los datos para las pruebas de Violación de Invariancia de Lorentz (LIV). Para ello, se han analizado y utilizado diez años de datos de Crab Pulsar para la prueba LIV. Además, se ha realizado por primera vez una búsqueda de emisión de VHE de un púlsar de milisegundos, PSR J0218 + 4232, en el modo estereoscópico de los telescopios MAGIC. Se ha analizado e incluido en este estudio una fuente BL Lac intermedia, 3C66A, en el campo de visión del púlsar de milisegundos. Además del análisis de la fuente astrofísica, en este estudio también se incluyeron algunos resultados de las pruebas del CTA Pathfinder Raman LIDAR y las pruebas de puesta en servicio. La tesis sigue este esquema: El capítulo 1 es una introducción a los púlsares. Se discuten los mecanismos de formación, evolución y emisión. El Capítulo 2 ofrece una descripción general de los estudios de Violación de In variancia de Lorentz con púlsares. El Capítulo 3 describe la técnica IACT, los telescopios MAGIC y el análisis de datos. El capítulo 4 ofrece una descripción general de los sistemas LIDAR utilizados para la caracterización atmosférica trabajando con los telescopios Cherenkov e incluye algunos resultados de las pruebas del Barcelona Raman LIDAR, “pathfinder” del “Cherenkov Telescope Array”. El capítulo 5 se centra en la búsqueda de emisiones de VHE del púlsar de milise gundos PSR J0218 + 4232 y el análisis de la fuente IBL Lac 3C66A en el campo de visión. El Capítulo 6 se centra en el análisis de datos del Crab Pulsar 2009-2020 y el estudio sobre la emisión más alta hasta energías TeV. El Capítulo 7 muestra los resultados de la prueba LIV realizada con los datos mostrados en el capítulo anterior. Finalmente, se discutirán las observaciones finales y los aspectos futuros.Since their discovery, pulsars have been an essential laboratory in many different astrophysics and physics branches because they are ultra-dense, fast spinning, and multiwavelength emitting objects. They have widened our understanding of stellar evolution and compact object studies, as well as fundamental physics topics such as General Relativity and the Standard Model. The emission mechanisms of pulsars are still not fully known. Although the history of pulsar studies in radio bands starts back in the 1960s, very high-energy (VHE) gamma-ray studies of pulsars are relatively newer. Therefore detecting new pulsars and increasing our knowledge on the discovered ones plays a crucial role in pulsar astrophysics. Cherenkov telescopes are excellent systems for studying very high-energy photons coming from the pulsars. Due to the fact that pulsars are faint sources compared to the other gamma-ray sources such as active galactic nuclei or gamma-ray bursts, data quality is of great importance for the data analysis results, and one of the most considerable effects comes from the atmospheric conditions. Therefore atmospheric scan systems such as Raman LIDARs working with the Cherenkov telescopes are supportive systems for the data analysis. The primary focus of this study is pulsar studies with the MAGIC telescopes and using the data for Lorentz Invariance Violation (LIV) tests. For this purpose, ten years of Crab Pulsar data has been analyzed and used for the LIV test. Moreover, a VHE emission search of a millisecond pulsar, PSR J0218+4232, has been performed for the first time in the stereoscopic mode of MAGIC telescopes. An intermediate BL Lac source, 3C66A, in the field of view (FoV) of the millisecond pulsar has been analyzed and included in this study. Apart from the astrophysical source analysis, some CTA pathfinder Raman LIDAR tests results and commissioning tests were included in this study, too. The thesis follows this outline: Chapter 1 is an introduction to Pulsars. The formation, evolution, and emission mechanisms are explained. Chapter 2 gives an overview of Lorentz Invariance Violation studies with pulsars. Chapter 3 describes the IACT technique, MAGIC Telescopes, and the data analysis. Chapter 4 gives an overview of LIDAR systems used for atmospheric characterization working with Cherenkov Telescopes and includes some tests results of the Barcelona Raman LIDAR, Cherenkov Telescope Array’s path. Chapter 5 focuses on searching VHE emission from the millisecond pulsar PSR J0218+4232 and analysis of IBL Lac source 3C66A in the FoV. Chapter 6 focuses on 2009-2020 Crab Pulsar data analysis and the study on the highest emission up to TeV energies. Chapter 7 shows the results of the LIV test performed with the data shown in the previous chapter. Finally, the conclusion remarks, and future aspects will be discussed.Universitat Autònoma de Barcelona. Programa de Doctorat en Físic
The reliability of the augmented Lehnert-Schroth and Rigo classification in scoliosis management
No full textBackground: In pattern-specific scoliosis exercises and bracing, the corrective treatment plan differs according to different curve patterns. There are a limited number of studies investigating the reliability of the commonly used classifications systems. Objective: To test the reliability of the augmented Lehnert-Schroth (ALS) classification and the Rigo classification. Methods: X-rays and posterior photographs of 45 patients with scoliosis were sent by the first author to three clinicians twice at 1-week intervals. The clinicians classified images according to the ALS and Rigo classifications, and the data were analysed using SPSS V-16. Intraclass correlation coefficients (ICCs) and standard error measurement (SEM) were calculated to evaluate the inter-and intra-observer reliability. Results: The inter-observer ICC values were 0.552 (ALS), 0.452 (Rigo) for X-ray images and 0.494 (ALS), 0.518 (Rigo) for the photographs. The average intra-observer ICC value was 0.720 (ALS), 0.581 (Rigo) for the X-ray images and 0.726 (ALS) and 0.467 (Rigo) for the photographs. Conclusions: The results of our study indicate moderate inter-observer reliability for X-ray images using the ALS classification and clinical photographs using the Rigo classification. Intra-observer reliability was moderate to good for X-ray images and clinical photographs using the ALS classification and poor to moderate for X-ray and clinical photographs using the Rigo classification
Why ‘one size fits all’ is not enough when designing COVID-19 immunity certificates for domestic use: a UK-wide cross-sectional online survey
No full textCorina-Elena Niculaescu ORCID 0000-0002-8971-0812;
Isabel Karen Sassoon ORCID 0000-0002-8685-1054;
Irma Cecilia Landa-Avila ORCID 0000-0001-6107-6736;
Ozlem Colak ORCID 0000-0003-0813-2561;
Gyuchan Thomas Jun ORCID 0000-0002-0958-0107;
Panagiotis Balatsoukas ORCID 0000-0002-2454-0816.Data availability statement: Data are available in a public, open access repository. Data are available in the project Open Science Framework (OSF) repository (https://osf.io/jubv6/). Supplemental material: This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed.Copyright information: © Author(s) (or their employer(s)) 2022. Objectives: The present study explored public’s willingness to use COVID-19 immunity certificates across six different domestic scenarios.
Design: Cross-sectional online survey.
Setting: UK representative survey conducted on 3 August 2021.
Participants 534 UK residents over 18 years old.
Interventions: Participants replied to the same set of questions.
Primary and secondary outcome measures: The primary outcome measure was willingness to use immunity certificates across three different domestic settings: (1) visiting the general practitioner (GP) for a non-urgent health issue; (2) dining in a restaurant and (3) attending a performance in a theatre. For each setting two options, one prioritising convenience (option A) and the other privacy (option B), were offered. Our secondary outcome measures were computed indices from items adapted from the Health Belief Model; attitudes towards sharing immunity status with service providers; prior to COVID-19 lifestyle. In addition, we recorded data about respondents’ sociodemographic characteristics.
Results: Respondents were more willing to use immunity certificates that prioritised convenience (92%), rather than privacy (76%), when visiting their GP . However, privacy was more favourable in the other two settings (dining in a restaurant (84%) and going to a theatre (83%)) compared with convenience (38% and 39% respectively). Personal beliefs about COVID-19 and immunity certificates were associated with variations in willingness to use these across all scenarios. No variations were observed across sociodemographics and lifestyle.
Conclusions: The findings of this survey suggest that there is not one-size-fits-all solution for designing immunity certificates. Immunity certificates are complex sociotechnical systems, any attempt to implement these for domestic use should be tailored to different settings and user needs. The design of certification services requires a more evidence-based approach and further research is needed to understand how different settings, design elements (like convenience or privacy) and personal beliefs about the pandemic should inform their design.IMMUNE or Immunity Passport Service Design is a nine-month project funded by the AHRC/UKRI COVID-19 Rapid Response (Ref. AH/W000288/1)
Hamiltonian linear type centers of linear plus cubic homogeneous polynomial vector fields
No full textAgraïments: The first author has been supported by AGAUR FI-DGR 2010. The third author has been supported by AGAUR PIV-DGR-2010, FCT grant PTDC/MAT/117106/2010 and through CAMG SD.We provide normal forms and the global phase portraits in the Poincaré disk for all the Hamiltonian non-degenerate centers of linear plus cubic homogeneous planar polynomial vector fields
Hamiltonian linear type centers of linear plus cubic homogeneous polynomial vector fields
No full textAgraïments: The first author has been supported by AGAUR FI-DGR 2010. The third author has been supported by AGAUR PIV-DGR-2010, FCT grant PTDC/MAT/117106/2010 and through CAMG SD.We provide normal forms and the global phase portraits in the Poincaré disk for all the Hamiltonian non-degenerate centers of linear plus cubic homogeneous planar polynomial vector fields
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