نتایج جستجو برای Modification

تعداد نتایج: 86422  

2008
Evgeny Lomonosov, Gábor Renner,

Complex shapes bounded by free form surfaces are designed and modified by specifying the parameters of their mathematical descriptions. Although most graphics and design systems provide high level tools for free form shape modifications, they are not intuitive and suitable for a creative designer or a stylist. In the paper a technique is proposed for the modification of the shape of a parametri...

2007
MICHAEL TEMKIN,

We generalize theorems of Deligne-Mumford and de Jong on semistable modifications of families of proper curves. The main result states that after a generically étale alteration of the base any (not necessarily proper) family of multipointed curves with semi-stable generic fiber admits a minimal semi-stable modification. The latter can also be characterized by the property that its geometric fib...

Journal: :Theor. Comput. Sci. 2009
Noga Alon, Uri Stav,

For a graph property P consider the following computational problem. Given an input graph G, what is the minimum number of edge modifications (additions and/or deletions) that one has to apply to G in order to turn it into a graph that satisfies P? Namely, what is the edit distance ∆(G,P) of a graph G from satisfying P. Clearly, the computational complexity of such a problem strongly depends on...

2014
Jonathan P. Bona, Alan Ruttenberg, Jenny Rouleau,

This paper presents a model for explicit representations of amino acid sites in the protein ontology. We handle sites that are the locations of post-translational modifications, focusing on histone proteins as our initial test case. The work explicitly represents both the entities involved (sites, residues, etc), and commonly used information about those entities such as positions relative to a...

Journal: :Blood 1980
G Kokkini, V J Stevens, C M Peterson, A Cerami,

The Strecker degradation reaction was evaluated as a means of modifying hemoglobin in vitro, utilizing ninhydrin as a model compound. Ninhydrin led to modification of hemoglobin (when incubated with hemoglobin or red cells) at physiologic temperature and pH. Isoelectric focusing documented the formation of new hemoglobin bands, all with decreased (more negative) isoelectric points that hemoglob...

Journal: :Neuroscience and biobehavioral reviews 1981
M B Sterman,

The author reviews the use of operant conditioning to alter electroencephalogram (EEG) patterns. A discrete rhythmic EEG pattern directly related to modulation of motor patterns (sensorimotor rhythm, SMR) was brought under voluntary control in the cat. This technique was modified for use in epileptic human volunteers in order to reduce motor seizures. The use of a newer experimental design and ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2007
Christopher A Traina, Jeffrey Schwartz,

Rare earth ion-doped yttrium oxide (Y2O3) nanocrystals are nontoxic and can be prepared as upconversion materials for cellular imaging, but they do not suspend well in water. In contrast to their tendency to dissolve in acidic media, yttria (Y2O3) nanoparticles readily react with phosphonic acids to give phosphonate-bonded yttria particles. Through the choice of phosphonic acid, the hydrophilic...

Journal: :Logic Journal of the IGPL 1998
Marc Frappier, Ali Mili, Jules Desharnais,

We propose a method which integrates program modification to the refinement calculus style of program development. Given a program developed through stepwise refinement of a specification, we propose an approach to specify modifications and to derive a new program from the existing refinement steps. This approach is based on the refinement lattice operator meet. A modification to a specificatio...

2001
Krishnan Sankaran,

The peptide, MKATKLVLGAVILGSTLLAGCSSN, corresponding to the N-terminal24 amino acids of Braun’s prolipoprotein, was used to study the lipid modification of prolipoprotein in Escherichia coli by measuring the rate of incorporation of either [2-SH]glycerol or [9,10SH]palmitate from the corresponding labeled phosphatidylglycerol into the peptide. Using E. coli strains containing varying levels of ...

2008
S. Matthew Liao, Anders Sandberg,

The prospect of using memory modifying technologies raises interesting and important normative concerns. We first point out that those developing desirable memory modifying technologies should keep in mind certain technical and user-limitation issues. We next discuss certain normative issues that the use of these technologies can raise such as truthfulness, appropriate moral reaction, self-know...

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