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NTRU is a lattice-based public-key cryptosystem that has been selected as one of the Round III finalists at the NIST Post-Quantum Cryptography Standardization. Compressing the key sizes to increase efficiency has been a long-standing open question for lattice-based cryptosystems. In this paper we provide a solution to three seemingly opposite demands for NTRU cryptosystem: compress the key size, i
Applications of physical bounds for electromagnetic radiators can be used to derive a priori estimates for antenna parameters in terms of the directivity-bandwidth product. These estimates relate the static electric and magnetic polarizability of the radiating structure to its dynamic properties. The results have previously been illustrated for dipole radiators with good agreement. Here, the bound
Denna artikel undersöker hur innebörden av ekonomisk ersättning kan omdefinieras över tid i svenska familjehemsföräldrars liv. Med utgångspunkt i fyrtio kvalitativa intervjuer visar jag att familjehemsföräldrar initialt kan tona ned eller bortse från de ekonomiska aspekterna av uppdraget, men senare komma att vara beroende av denna inkomst – inte nödvändigtvis av egenintresse, utan som ett sätt atThis article examines how the meaning of financial compensation may be redefined over time in the lives of Swedish foster parents. Drawing on forty qualitative interviews, I demonstrate that while foster parents may initially downplay or disregard the monetary aspects of fostering, they can later come to depend on this income, not necessarily out of self-interest, but as a means of deepening their
The nexus of population growth and changing diets has increased the demands placed on agriculture to supply food for human consumption, animal feed and fuel. Rising incomes lead to dietary changes, from staple crops, towards commodities with greater land requirements, e.g. meat and dairy products. Despite yield improvements partially offsetting increases in demand, agricultural land has still been
To develop an innovative information and communication technology (ICT) tool intended to help older people in their search for optimal housing solutions, a first step in the development process is to gain knowledge from the intended users. Thus the aim of this study was to deepen the knowledge about needs and expectations about housing options as expressed and prioritized by older people, people a
Intellectual property is a very important type of asset in today’s business world. Since business in the Western World grows increasingly based and dependent on know-how and technological development, intangible assets such as trademarks, copyrights and patents plausibly represent greater economic value to economic actors here than other, physical, assets do. Although it is comparatively unknown
This dissertation investigates the Swedish directive speech act in spoken language, focusing on directives used to prompt actions. Directives can be direct, like imperatives, or more polite, embedded in structures typically associated with other speech acts, such as interrogative or declarative forms. The study centers on Physical Education and Health (PEH) lessons, where directives are prevalent.
We explore the potential of nanocrystals (a term used equivalently to nanoparticles) as building blocks for nanomaterials, and the current advances and open challenges for fundamental science developments and applications. Nanocrystal assemblies are inherently multiscale, and the generation of revolutionary material properties requires a precise understanding of the relationship between structure
In this article I rethink international migration law by analysing the Model International Mobility Convention (MIMC) through a concrete-utopian lens. Starting from the premise that coloniality remains an active structure of the global order, I show how progressive legal projects often reproduce the hierarchies they seek to overcome. Combining Gary Wilder’s concrete utopianism with Ruth Levitas’s
Although the ~200 impact craters known on Earth represent only a small fraction of the craters originally formed, the available data suggest an excess of craters by one order of magnitude, in number, in the interval ca. 470-440 Ma during the Ordovician. Most of these “excess” craters may be related to the breakup of the L-chondrite parent body (LCPB) in the asteroid belt at 465.8 ± 0.3 Ma. This is
This paper describes some research stimulated by a fundamental shift that is occurring in the manufacture and marketing of aero engines for commercial and defence purposes, away from the selling of products to the provision of services. The collaborating aerospace company offers contracts under which it remains responsible for the maintenance of engines which have been purchased by airlines throug
The Paris Agreement requests a substantial reduction of greenhouse gas (GHG) emissions. These emissions are currently mainly estimated from bottom-up inventories and process-based models of land and ocean fluxes. Another, complementary approach is based on measurements of the atmospheric GHG concentration in combination with atmospheric inverse modelling to provide the GHG fluxes. For the latter a
OBJECTIVE: To present findings that suggest steroid treatment within 24 hours of onset of vestibular neuronitis results in better restitution of vestibular function than treatment between 25 and 72 hours. PATIENTS: Thirty-three consecutive patients (17 men, 16 women, mean age 57 yr, range 17-85 yr) with acute vestibular neuronitis and treated with steroids within 72 hours after symptom onset. Pati
At the University Hospital in Lund, Sweden, a preparation program was developed for children undergoing lumbar punctures (LPs) during chemotherapy for leukemia or lymphoma. Subsequently, a study was initiated to determine whether a preparation program for children prior to treatment would reduce their anxiety and improve their cooperation. This study also was undertaken to examine whether reinforc
