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Non-Hermitian quantum mechanics with parity-time (PT) symmetry is presently gaining great interest, especially within the fields of photonics and optics. Here, we give a brief overview of low-dimensional semiconductor nanodevices using the example of a quantum dot with input and output leads, which are mimicked by imaginary potentials for gain and loss, and how wave functions, particle flow, coale

In the past decade, there has been significant interest in the potentially advantageous thermoelectric properties of one-dimensional (1D) nanowires, but it has been challenging to find high thermoelectric power factors based on 1D effects in practice. Here we point out that there is an upper limit to the thermoelectric power factor of nonballistic 1D nanowires, as a consequence of the recently est

The purpose of this study was to develop a method to simulate breathing motion induced interplay effects for volumetric modulated arc therapy (VMAT), to verify the proposed method with measurements, and to use the method to investigate how interplay effects vary with different patient- and machine specific parameters. VMAT treatment plans were created on a virtual phantom in a treatment planning s

To harvest the benefits of III-V nanowires in optoelectronic devices, the development of ternary materials with controlled doping is needed. In this work, we performed a systematic study of n-type dopant incorporation in dense InxGa(1-x)P nanowire arrays using tetraethyl tin (TESn) and hydrogen sulfide (H2S) as dopant precursors. The morphology, crystal structure and material composition of the na

Background: Best practice in physical therapy education requires good quality and quantity of research based on authentic learning settings and teaching practices. Facilitating large multisite research and large data sets for analysis has the potential to contribute to a strong research base. Clinical research makes use of international and interprofessional consortiums to produce quantity and qua

The World Health Assembly is the WHO’s supreme decision-making body and consists of representatives from the 194 WHO Member States who take formal decisions on the WHO’s policies, workplan and budget. The event is also attended by representatives of non-governmental organisations, the private sector, the press and even members of the public. Based on participant observation at six World Health Ass

Under istider, när stora mängder havsvatten var bundet i inlandsisar, var den globala havsnivån lägre än idag och stora delar av kontinentalsockeln torrlagd. Den senaste istiden (cirka 115 000–12 000 år sedan) var inget undantag, då torrlagda områden utvecklades till ekologiskt rika kustområden som möjliggjorde människans spridning över världen. När inlandsisarna smältesteg havsnivån och dessa lanDuring times of lower global sea level, vast areas of the coastal shelf were exposed and converted into ecologically diverse coastal landscapes that wereattractive for human occupation. The landscapes were subsequently flooded during the deglaciation, but well-preserved remains of these landscapes andtheir inhabitants can today be found on the seafloor. In the southern Baltic Basin, where the comp

Innehåll: Fångad i gruppen : om gruppen som socialt system / Gunnel Colnerud. The rise and decline of groups / Stefan Jern & Anders Hempel. Om konstruktiva och destruktiva krafter i grupper : eller har ni sett katten som inte har någon svans / Gunilla Guvå Irrationella fenomen i grupper / Anders Hempel. Destruktivt grupptänkande (groupthink) : i teori pch praktik / Michael Rosander & Kjell