User profiles for A. Walther

Andreas Walther

- Verified email at uni-mainz.de - Cited by 20188

Andrea Walther

- Verified email at math.hu-berlin.de - Cited by 7517

Andi Walther

- Verified email at ssec.wisc.edu - Cited by 2151

Janus particles: synthesis, self-assembly, physical properties, and applications

A Walther, AHE Muller - Chemical reviews, 2013 - ACS Publications
Symmetric shapes and patterns are fascinating and preferred by humans as symmetric
stimuli of any kind are more easily processed by the visual systems than their asymmetric …

Genetic prognostic and predictive markers in colorectal cancer

A Walther, E Johnstone, C Swanton, R Midgley… - Nature Reviews …, 2009 - nature.com
Despite many studies of the likely survival outcome of individual patients with colorectal
cancer, our knowledge of this subject remains poor. Until recently, we had virtually no …

Materials learning from life: concepts for active, adaptive and autonomous molecular systems

R Merindol, A Walther - Chemical Society Reviews, 2017 - pubs.rsc.org
Bioinspired out-of-equilibrium systems will set the scene for the next generation of molecular
materials with active, adaptive, autonomous, emergent and intelligent behavior. Indeed life …

Search for hadronic b→ u decays

…, R Mankel, H Scheck, G Schweda, B Spaan, A Walther… - Physics Letters B, 1990 - Elsevier
Using the ARGUS detector at the e + e − storage ring DORIS II at DESY, we searched for b→u
transitions in exclusive hadronic B meson decays. A systematic analysis of B decays into …

[BOOK][B] Evaluating derivatives: principles and techniques of algorithmic differentiation

A Griewank, A Walther - 2008 - SIAM
The advent of high-speed computers and sophisticated software tools has made the
computation of derivatives for functions defined by evaluation programs both easier and more …

Janus particles

A Walther, AHE Müller - Soft matter, 2008 - pubs.rsc.org
… Andreas Walther is researching for his Ph.D., focusing on Janus particles and other
multicompartment architectures. Since 2005 he has been a member of the “Macromolecular Science…

The question of phase retrieval in optics

A Walther - Optica Acta: International Journal of Optics, 1963 - Taylor & Francis
It is generally asserted that valuable phase information is irretrievably lost in the squaring
operation required to obtain the intensity from the amplitude distribution in the image of a star …

Algorithm 799: revolve: an implementation of checkpointing for the reverse or adjoint mode of computational differentiation

A Griewank, A Walther - ACM Transactions on Mathematical Software …, 2000 - dl.acm.org
In its basic form, the reverse mode of computational differentiation yields the gradient of a
scalar-valued function at a cost that is a small multiple of the computational work needed to …

Exclusive hadronic decays ofB mesons

…, M Schieber, G Schweda, B Spaan, A Walther… - Zeitschrift für Physik C …, 1990 - Springer
Using the ARGUS detector at thee + e − storage ring DORIS II, we have measuredB decays
into exclusive final states containing aD orD * meson plus several pions, or containing aJ/ψ …

Regimes of youth transitions: Choice, flexibility and security in young people's experiences across different European contexts

A Walther - Young, 2006 - journals.sagepub.com
In a context of de-standardized transitions to work, young people are required to take more
individual decisions, a process in which their subjectivities become increasingly important for …