Results 61 to 70 of about 4,705,313 (296)

Model evolution and system evolution

Journal of Computer Science and Technology, 2000
In this paper we define an evolution mechanism with formal semantics using the metamodeling methodology [Geisler et al.98] based on dynamic logic. A remarkable feature of the metamodeling methodology is the ability to define the relation of intentional and extensional entities within one level, allowing not only for the description of structural ...
Pons, Claudia, Baum, Gabriel Alfredo, Kutsche, Ralf-Detlef   +2 more
openaire   +3 more sources

System Evolution Barriers and How to Overcome Them! [PDF]

, 2010
Creating complex systems from scratch is time consuming and costly, therefore a strategy often chosen by companies is to evolve existing systems. Yet evolving a system is also complicated. Complex systems are usually the result of multidisciplinary teams,
Bonnema, G. Maarten, Borches, P. Daniel
core   +1 more source

Toward Making the Constraint Hypersurface an Attractor in Free Evolution

, 2003
There is an abundance of empirical evidence in the numerical relativity literature that the form in which the Einstein evolution equations are written plays a significant role in the lifetime of numerical simulations.
A.M. Knapp, David R. Fiske, S.A. Teukolsky   +2 more
core   +1 more source

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source

Community Structure, Assembly and Interactions of Nitrospira Nitrite-Oxidizing Bacteria in Sediments of the Eastern China Marginal Seas

Microorganisms
Nitrite oxidation, a pivotal process in the nitrogen cycle driven by microorganisms, is primarily carried out by nitrite-oxidizing bacteria (NOB). While extensive studies on Nitrospira have been conducted in terrestrial habitats, knowledge of Nitrospira ...
Hao Dong, Hui He, Min Wang
doaj   +1 more source

Prevalence and Trajectory of Household Material Hardship Among Children With Advanced Cancer

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Families of children with advanced cancer living in poverty experience inferior outcomes including poor parent mental health and worse child quality of life. Household material hardship (HMH: food, housing, transportation, and/or utility insecurity) is a modifiable poverty exposure—and potential intervention target—that ...
Sarah Wright, Morgan A. Paul, Selena Murcia Mendez, Emily Jones, Lucille Lokko, Chelsea Heneghan, Nicholas Purol, Morgan Arnold, Rahela Aziz‐Bose, Colleen A. Kelly, Sandi L. Pruitt, Joanne Wolfe, Kira Bona, Puja J. Umaretiya   +13 more
wiley   +1 more source

The N boson time dependent problem: an exact approach with stochastic wave functions

, 2000
We present a numerically tractable method to solve exactly the evolution of a N boson system with binary interactions. The density operator of the system rho is obtained as the stochastic average of particular operators |Psi_1> are either Fock states |N ...
A. Gilchrist, A. Sinatra, B. P. Anderson, C. C. Bradley, C. C. Bradley, C. Gardiner, C. W. Gardiner, C. W. Gardiner, C. W. Gardiner, D. F. Walls, D. Fried, D. M. Ceperley, E. Zaremba, F. Dalfovo, G. J. Milburn, H. P. McKean, H. T. C. Stoof, I. Carusotto, J. Dalibard, J. H. Eberly, K. B. Davis, K. Huang, M. H. Anderson, M. J. Steel, M. R. Matthews, M.O. Scully, P. D. Drummond, P. D. Drummond, Víctor M. Pérez-García, W. Krauth, Y. Castin, Y. Castin, Y. Castin, Y. Kagan, Yu. Kagan   +34 more
core   +1 more source

Inpatient Food Insecurity and Pediatric Hematology Oncology Hospitalization Outcomes

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Children with cancer and blood disorders are at risk for food insecurity (FI). We aimed to describe the association of inpatient food insecurity (IFI) and hospitalization outcomes among patients admitted to the pediatric hematology oncology service. Of 325 caregivers screened for IFI, 60 (18.6%) screened positive.
Joanna M. Robles, Greg Russell, Leila H. DeWitt, Kimberly Montez, Callie L. Brown   +4 more
wiley   +1 more source

Shewanella phage encoding a putative anti-CRISPR-like gene represents a novel potential viral family

Microbiology Spectrum
Shewanella is a prevalent bacterial genus in deep-sea environments including marine sediments, exhibiting diverse metabolic capabilities that indicate its significant contributions to the marine biogeochemical cycles.
Hongmin Wang, Kaiyang Zheng, Min Wang, Keran Ma, Linyi Ren, Ruizhe Guo, Lina Ma, Hong Zhang, Yundan Liu, Yao Xiong, Miaolan Wu, Hongbing Shao, Yeong Yik Sung, Wen Jye Mok, Li Lian Wong, Andrew McMinn, Yantao Liang   +16 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source