System-Level Specification and Modeling Languages

2017 ◽  
pp. 59-73
Author(s):  
Stephen A. Edwards ◽  
Joseph T. Buck
Keyword(s):  
System Level ◽  
Modeling Languages

scholarly journals Advanced Systems Engineering

2020 ◽  
pp. 353-364
Author(s):  
Manfred Broy ◽  
Wolfgang Böhm ◽  
Bernhard Rumpe
Keyword(s):  
Systems Engineering ◽  
System Level ◽  
Modeling Languages ◽  
Ministry Of Education ◽  
Functional Requirements ◽  
New Paradigm ◽  
Cross Sectional ◽  
Modeling Tools ◽  
Digital Modeling ◽  
Level 3

AbstractAdvanced systems engineering (ASE) is a new paradigm for agile, efficient, evolutionary, and quality-aware development of complex cyber-physical systems using modern digital technologies and tools. ASE is essentially enabled by smart digital modeling tools for specifying, modeling, testing, simulating, and analyzing the system under development embedded in a coherent and consistent methodology.The German Federal Ministry of Education and Research (BMBF) projects SPES2020, SPES_XT, and CrESt offer such a methodology and framework for model-based systems engineering (MBSE). The framework provides a comprehensive methodology for MBSE that is independent of tools and modeling languages. The framework also offers a comprehensive set of concrete modeling techniques and activities that build on a formal, mathematical foundation. The SPES framework is based on four principles that are of paramount importance: (1) Functional as well as non-functional requirements fully modeled and understood at system level. (2) Consistent consideration of interfaces at each system level. (3) Decomposition of systems into subsystems and their interfaces. (4) Models for a variety of cross-sectional topics (e.g., variability, safety, dynamics).

Where do we stand? Comparing system-level service lines in the private sector and in VHA

1998 ◽  
Author(s):  
Martin P. Charns ◽  
Victoria A. Parker ◽  
William H. Wubbenhorst
Keyword(s):  
Private Sector ◽  
System Level

Resilient futures: An individual and system-level approach to improve the well-being and resilience of disadvantaged young Australians.

2018 ◽  
Vol 4 (3) ◽  
pp. 228-244 ◽  
Author(s):  
Ivan J. Raymond ◽  
Matthew Iasiello ◽  
Aaron Jarden ◽  
David Michael Kelly
Keyword(s):  
Well Being ◽  
System Level

Gradient based system-level diagnosis

2007 ◽  
Vol 51 (1-2) ◽  
pp. 43
Author(s):  
Balázs Polgár ◽  
Endre Selényi
Keyword(s):  
System Level ◽  
Gradient Based

Interconnect Limits on Gigascale Integration (GSI)

1997 ◽  
Vol 473 ◽  
Author(s):  
J. A. Davis ◽  
J. D. Meindl
Keyword(s):  
Response Time ◽  
Length Distribution ◽  
Path Model ◽  
System Level ◽  
Wire Length ◽  
Clock Frequency ◽  
Gigascale Integration ◽  
Logic Network ◽  
Binary Switching ◽  
Quantitative Definition

ABSTRACTOpportunities for Gigascale Integration (GSI) are governed by a hierarchy of physical limits. The levels of this hierarchy have been codified as: 1) fundamental, 2) material, 3) device, 4) circuit and 5) system. Many key limits at all levels of the hierarchy can be displayed in the power, P, versus delay, td, plane and the reciprocal length squared, L-2, versus response time, τ, plane. Power, P, is the average power transfer during a binary switching transition and delay, td, is the time required for the transition. Length, L, is the distance traversed by an interconnect that joins two nodes on a chip and response time, τ, characterizes the corresponding interconnect circuit. At the system level of the hierarchy, quantitative definition of both the P versus td and the L-2 versus τ displays requires an estimate of the complete stochastic wiring distribution of a chip.Based on Rent's Rule, a well known empirical relationship between the number of signal input/output terminals on a block of logic and the number of gate circuits with the block, a rigorous derivation of a new complete stochastic wire length distribution for an on-chip random logic network is described. This distribution is compared to actual data for modern microprocessors and to previously described distributions. A methodology for estimating the complete wire length distribution for future GSI products is proposed. The new distribution is then used to enhance the critical path model that determines the maximum clock frequency of a chip; to derive a preliminary power dissipation model for a random logic network; and, to define an optimal architecture of a multilevel interconnect network that minimizes overall chip size. In essence, a new complete stochastic wiring distribution provides a generic basis for maximizing the value obtained from a multilevel interconnect technology.

The role of inflammatory cytokines in the pathogenesis of premature labor in multiple pregnancy as a result of ART

2016 ◽  
pp. 73-76
Author(s):  
B.M. Ventskivskiy ◽  
◽  
I.V. Poladych ◽  
S.O. Avramenko ◽  
◽  
...  
Keyword(s):  
Assisted Reproductive Technology ◽  
Inflammatory Cytokines ◽  
Proinflammatory Cytokines ◽  
Local Level ◽  
Multiple Pregnancy ◽  
Reproductive Technology ◽  
System Level ◽  
Premature Labor ◽  
Pro Inflammatory Cytokines

In recent years there has been an increase in the frequency of multiple pregnancies and the associated perinatal losses. It is a result of multiple pregnancy in ART refers to a high-risk gestation, at which premature births occur in 2 times more often than in singleton pregnancies. The objective: to determine the role of pro-inflammatory cytokines in the pathogenesis of premature labor in multiple pregnancy, as a result of assisted reproductive technology. Patients and methods. to determine the pro-inflammatory cytokines that all pregnant with bagtopliddyam held immunosorbent assay, defined concentrations of interleukin (IL) in serum and cervical mucus. Results. The analysis of the levels of pro-inflammatory cytokines (IL-1, IL-8) in the test environment, found high concentrations in the surveyed women with multiple pregnancy, due to the use of ART, compared with spontaneous multiple and singleton pregnancy. Increased concentration of proinflammatory cytokines in patients with multiple pregnancy by ART is associated with their synthesis at the system level, it stimulated foci of inflammation in the female genitals and extragenital localization. This correlates with the clinical data and statistical analysis, patients with multiple pregnancy as a result of ART had weighed infectious-inflammatory history. Conclusion. The study showed that elevated levels of proinflammatory cytokines in the systemic and local level in patients with multiple pregnancy due to ART, typical for women with miscarriage, because of the physiological course of pregnancy characterized by the predominance of anti-inflammatory cytokines that prevent rejection of the fetus as a foreign factor. Based on the data obtained proved the role of systemic inflammatory factors in the genesis of preterm labor in women with a multiple pregnancy, as a result of assisted reproductive technology. Key words: multiple pregnancy, assisted reproductive technology, premature birth, interleukine-1, interleukine-8.

EGM at the system level

2017 ◽  
Author(s):  
Adrian Bejan
Keyword(s):  
System Level
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