740 research outputs found

    High-resolution spectroscopy of gaseous 83m Kr conversion electrons with the KATRIN experiment

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    © 2020 The Author(s). Published by IOP Publishing Ltd. In this work, we present the first spectroscopic measurements of conversion electrons originating from the decay of metastable gaseous 83mKr with the Karlsruhe Tritium Neutrino (KATRIN) experiment. The obtained results represent one of the major commissioning milestones for the subsequent direct neutrino mass measurement with KATRIN. The successful campaign demonstrates the functionalities of the KATRIN beamline. Precise measurement of the narrow K-32, L3-32, and N2,3-32 conversion electron lines allowed to verify the eV-scale energy resolution of the KATRIN main spectrometer necessary for competitive measurement of the absolute neutrino mass scale

    High-resolution spectroscopy of gaseous 83m Kr conversion electrons with the KATRIN experiment

    No full text
    © 2020 The Author(s). Published by IOP Publishing Ltd. In this work, we present the first spectroscopic measurements of conversion electrons originating from the decay of metastable gaseous 83mKr with the Karlsruhe Tritium Neutrino (KATRIN) experiment. The obtained results represent one of the major commissioning milestones for the subsequent direct neutrino mass measurement with KATRIN. The successful campaign demonstrates the functionalities of the KATRIN beamline. Precise measurement of the narrow K-32, L3-32, and N2,3-32 conversion electron lines allowed to verify the eV-scale energy resolution of the KATRIN main spectrometer necessary for competitive measurement of the absolute neutrino mass scale

    KATRIN: Status and Prospects for the Neutrino Mass and Beyond

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    The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to measure a high-precision integral spectrum of the endpoint region of T2 beta decay, with the primary goal of probing the absolute mass scale of the neutrino. After a first tritium commissioning campaign in 2018, the experiment has been regularly running since 2019, and in its first two measurement campaigns has already achieved a sub-eV sensitivity. After 1000 days of data-taking, KATRIN's design sensitivity is 0.2 eV at the 90% confidence level. In this white paper we describe the current status of KATRIN; explore prospects for measuring the neutrino mass and other physics observables, including sterile neutrinos and other beyond-Standard-Model hypotheses; and discuss research-and-development projects that may further improve the KATRIN sensitivity.Comment: Contribution to Snowmass 2021. 70 pages excluding references; 35 figures. Author list updated June 202

    The haunted public sphere: women and the power of emotion in the works of Alexander Kluge and the films of the Berlin School

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    My dissertation sheds light on the German filmmaker and author Alexander Kluge and his ideas on filmmaking as they evolved out of his conception of the public versus the private spheres since the early 1960s. It was Kluge’s contention that personal experiences of war and violence could not be expressed publicly in the postwar Federal Republic, causing a rift between the two realms and a haunting presence of trauma within individuals and society as a whole. What Kluge, in cooperation with Oskar Negt, called “alternative public sphere” in Public Sphere and Experience (1972) and History and Obstinacy (1981) is closely linked to Woman and so-called “proletarian” forces countering instrumental reason and the bourgeois cultural matrix. Analyzing four crucial films from Kluge’s creative work, I outline the increasingly allegorical role of his concept of “female mode of production,” which constitutes Kluge’s aesthetics and thematic focus. How the ideas of “alternative public sphere” and “female mode of production” are linked to the cinema and Kluge’s theory of film is the focus of another chapter that scrutinizes Kluge’s recent literary compilation Cinema Stories (2007). Finally, I read a selection of contemporary German films considered the new filmic avant-garde through the lens of Kluge’s approach to film, to the “female mode of production,” and to the public sphere. This allows me to compare the ethics, the formal and political attitude of the so-called Berlin School directors to the vanguard movement of Young German Film in the sixties and early seventies. I conclude that the filmic Autoren today deal with a similar problem as Alexander Kluge has done throughout his career, namely the dissociation of personal, lived experience from public representation. They also employ formal and thematic strategies that can be related to the thoughts behind the Oberhausen generation of German filmmakers. While the generation of the leftist student movements sought public recognition of the atrocities committed under National Socialism, the Berlin School directors deal with mediated experience in times of media and finance corporatism as virtual realities threaten to take over the empiric world.Ph. D.Includes bibliographical referencesby Katrin Polak-Springe

    Aufbau und Charakterisierung einer Ionenfalle für ein Multireflektions-Flugzeitmassenspektrometer [no download]

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    OnTEAM metadata: GDSID: DOC-2009-Jan-96; Attribute ID: LIBRARY-thesis_diplom-2009-002; Title: [GSI Dipl 2008-05] Aufbau und Charakterisierung einer Ionenfalle für ein Multireflektions-Flugzeitmassenspektrometer [no download]; Author(s): Reinheimer, Katrin; Corporate author(s): ; Publication date: 20090114; Creator: manton; Creation date: 14.01.2009 15:13:37; Change date: 30.09.2010 16:21:42; Access: Welt; Attribute type: Thesis.Diplom; Directory path: ['GSI Publications', 'GSI as Publisher']; Attribute path: ['Infrastructure', 'Library and Documentation', 'thesis_diplom', 'Added in 2009']; File name(s): ['DOC-2009-Jan-96-1.pdf']; File title(s): ['']; File access: ['nur berechtigte Gruppen'

    Thoughts on the Importance of the Meso Perspective: the “ Plattform Produktives Stadtgrün” / Gedanken zur Bedeutung der Mesoperspektive: „Plattform Produktives Stadtgrün“

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    Invited to contribute to a book section on Berlin, Katrin Bohn thinks about the importance of a middle ground between the big pressing macro questions of climate change and the micro spaces of individual food system activities. She writes: ‘Judging by the realities of environmental degradation, traditional urban planning has failed. Concerns of experts have not been sufficiently acknowledged. It requires a middle ground—a meso perspective—to better enable conversation between the various urban stakeholders and bring about widely supported and lasting change. How can this be initiated? In a time of social media, the author proposes to look at a recently developed tool for information, communication, networking, and—ultimately—urban planning’.Bohn uses the Plattform Produktives Stadtgrün [Plattform Productive Urban Green], a Berlin-based interactive online tool developed in a collaboration between the local council, local community gardeners and external experts, including Katrin, to illustrate such a meso perspective.The book Urban Open Space + is edited by Carolin Mees and published by Jovis. Subtitled Strategies inbetween architecture and open space planning, the bi-lingual publication (English/German) explores ‘commonly used and designed open spaces [as] anchor points in the city and a possible response to the consequences of urbanization and climate change, as well as to the presence of social and cultural differences’

    DataSheet2_Macrophyte habitat architecture and benthic-pelagic coupling: Photic habitat demand to build up large P storage capacity and bio-surface by underwater vegetation.pdf

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    Macrophytes play an important role in shallow lakes if large standing crop can be achieved. Here we stress the role of submerged macrophytes for benthic-pelagic coupling in the shallow oxbow lake Alte Donau (Austria) during restoration triggered by sufficient light availability (12% surface ambient light, photic>12% depth, zoptimum) in both, the benthic and the pelagic habitat. Focusing on zoptimum, rather than on minimum light requirement (euphotic depth), seemed to be more meaningful to follow the macrophyte development. After phosphate precipitation treatment, the photic>12% pelagic habitat accounted for more than half of the total water volume in summer, while the achievement of the same photic>12% conditions for half of the total sediment surface area was delayed by 8 years. A delay of light exposure on the lake bottom area compared to the lake water volume is given by the basin morphometry, but the time span that is required for passing this delay depends on the efficiency of restoration measures. The 8-year delay for Alte Donau means that lake restoration focusing on macrophyte re-establishment was difficult to stimulate due to insufficient light exposure at the lake bottom. A further increase of photic>12% conditions to more than 3/4 size of both pelagic and benthic habitat, however, eventually stimulated sustained macrophyte growth. With the onset of this large macrophyte biomass yield, the phosphorus storage pool of submerged macrophytes exceeded the annual peak concentration of total phosphorus of the whole lake water by about one order of magnitude for the first time. Further, the submerged macrophyte bio-surface exceeded the size of lake bottom surface, also by about one order of magnitude. Our results support that macrophytes can act as a significant sink of phosphorus by retaining this nutrient at least during the growing season. We further see the immensely large macrophyte bio-surface as a vast spatial dimension for an additional habitat for freshwater biota. Therefore, we conclude that mature submerged macrophyte formations need to be considered not only as biomass yield, but create a unique macrophyte habitat architecture as a third main component in the network between benthic (lake bottom) and pelagic (lake water) habitat.</p

    The influence of employer`s brand on the employee recruitment in the Lasita Maja group

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    Magistritöö Ökonoomika ja ettevõtluse õppekavaKäesoleva magistritöö eesmärk on välja selgitada, milline on Lasita Maja grupi bränd tööandjana ja kuidas see mõjutab personali värbamist. Uurimismeetodina kasutas autor kvantitatiivuuringut, koostades ankeetküsimustiku, mida ettevõtte töötajad täitsid paberkandjal ja võrdlusgrupp elektrooniliselt. Lisaks koguti andmeid poolstruktureeritud intervjuu kaudu tootmisjuhiga. Teema aktuaalsus seisneb kvalifitseeritud vaba tööjõu nappuses tööturul ja ettevõtte suurenevas vajaduses kvalifitseeritud personali järele. Magistritöö teema valik on seotud asjaoluga, et tööandja brändi pole ettevõttes eraldi uuritud ja soov on teada saada peamistest tööandja brändiga seotud põhjustest, mis puudutavad tulemuslikku värbamist ja tööandja brändi Käesolev magistritöö koosneb erinevatest kirjandusallikatest ja teadusartiklitest. Kirjandusallikatest on kasutatud nii kodumaiseid kui ka välisautorite töid Käesoleva töö tulemusi saab kasutada ettevõtte siseinfoallikana eelolevate uuringute planeerimisel ja korraldamisel, ettevõtte tulemusliku värbamisprotsessi ja strateegia väljatöötamisel ja oma töötajaskonna soovituste andmisel potentsiaalsetele töötajatele. Käesoleva magistritöö eesmärgi täitmiseks on autori poolt teostatud kvantitatiivne juhtumiuuring Lasita Maja Eesti grupi kolmest tööandjast: Lasita Maja Production AS, Lasita Maja AS ja Bohlen AS ja võrdlusuuring ettevõttega mitte seotud inimestest. Autor analüüsis käesoleva uuringu tulemusi demograafiliste näitajate põhiselt, et saada faktipõhist informatsiooni parendusettepanekute tarbeks. Tähtsamate tulemustema võib välja tuua, et ettevõtte tööandja bränd ei ole väga tuntud, kuid mainet pidasid vastajad pigem heaks. Enimkasutavaks infokanaliks on ettevõtte koduleht, sõbra/tuttava soovitus ja internetiportaalid. Vastajad teavad, mis tooteid ettevõte toodab ja ettevõte on tuntud oma kvaliteetsete toodete poolest. Üle 60% kõikidest vastajatest soovitaks Lasita Maja kui tööandjat kõigile. Peamine põhjus, miks inimesed püsivad tööandja juures on tööaeg, tööga rahulolu ja ettevõtte maine. Ettevõtte brändi mõju värbamisele on pigem positiivne ja soodustab tulemuslikku värbamist.The aim of this Master's thesis is to identify what is the brand of the Lasita Maja group as an employer and how it affects the recruitment of staff. As a research method, the author used a quantitative study, by drawing up a questionnaire filled out by the employees of the company on paper and by the reference group electronically. In addition, the data was collected through a semi-structured interview with the production manager. The actuality of the topic lies in the shortage of skilled free labor in the labor market and the company´s growing need for qualified personnel. The choice of the topic of the Master's thesis is related to the fact that the employer's brand has not been individually investigated in the company and the desire to know the reasons for the main employers' brand related to effective recruitment and the employer's brand. This Master's thesis consists of various sources of literature and scientific articles. The sources of literature used are both domestic and foreign. The results of this work can be used as an internal source for the company in planning and organizing future studies, developing a company's effective recruitment process and strategy, and providing its employees with recommendations for potential employees. For the purpose of this Master's thesis, the author has conducted a quantitative case study and benchmarking of three employers of Lasita Maja Estonian Group: Lasita Maja Production AS, Lasita Maja AS and Bohlen AS. The author analyzed the results of this study on the basis of demographic indicators in order to obtain factual information for improvement proposals. The most important results show that the employer's trademark is not very well known, but respondents considered the reputation rather good The most commonly used information channel is the company's homepage, a friend´s/acquaintance´s tips, and internet portals. Respondents know what products the company produces and the company is known for its high quality products. More than 60% of all respondents would recommend Lasita Maja as an employer for everyone. The main reason why people stay with the employer is working hours, job satisfaction and company's reputation. The brand's impact on recruitment is rather positive and encourages effective recruitment
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