scholarly journals COVID-19 in Japan: What could happen in the future?

2020 ◽  
Author(s):  
Nian Shao ◽  
Yan Xuan ◽  
Hanshuang Pan ◽  
Shufen Wang ◽  
Weijia Li ◽  
...  
Keyword(s):  
Time Delay ◽  
Dynamic Model ◽  
Distribution Models ◽  
The Future ◽  
Statistical Time

COVID-19 has been impacting on the whole world critically and constantly Since December 2019. We have independently developed a novel statistical time delay dynamic model on the basis of the distribution models from CCDC. Based only on the numbers of confirmed cases in different regions in China, the model can clearly reveal that the containment of the epidemic highly depends on early and effective isolation. We apply the model on the epidemic in Japan and conclude that there could be a rapid outbreak in Japan if no effective quarantine measures are carried out immediately.

Determination and modelling of the formative and statistical time delay in neon

2007 ◽  
Vol 38 (1) ◽  
pp. 73-78 ◽  
Author(s):  
V. Lj. Marković ◽  
S. N. Stamenković ◽  
S. R. Gocić ◽  
S. M. Durić
Keyword(s):  
Time Delay ◽  
Statistical Time

scholarly journals New time delay estimation-based virtual decomposition control for n-DoF robot manipulator

2021 ◽  
Vol 10 (3) ◽  
pp. 192
Author(s):  
Hachmia Faqihi ◽  
Khalid Benjelloun ◽  
Maarouf Saad ◽  
Mohammed Benbrahim ◽  
M. Nabil Kabbaj
Keyword(s):  
Time Delay ◽  
Dynamic Model ◽  
Control Strategy ◽  
Robot Manipulator ◽  
Time Delay Estimation ◽  
Lyapunov Theory ◽  
Degree Of Freedom ◽  
Delay Estimation ◽  
The Stability

<p>One of the most efficient approaches to control a multiple degree-of-freedom robot manipulator is the virtual decomposition control (VDC). However, the use of the re- gressor technique in the conventionnal VDC to estimate the unknown and uncertaities parameters present some limitations. In this paper, a new control strategy of n-DoF robot manipulator, refering to reorganizing the equation of the VDC using the time delay estimation (TDE) have been investigated. In the proposed controller, the VDC equations are rearranged using the TDE for unknown dynamic estimations. Hence, the decoupling dynamic model for the manipulator is established. The stability of the overall system is proved based on Lyapunov theory. The effectiveness of the proposed controller is proved via case study performed on 7-DoF robot manipulator and com- pared to the conventionnal Regressor-based VDC according to some evalution criteria. The results carry out the validity and efficiency of the proposed time delay estimation- based virtual decomposition controller (TD-VDC) approach.</p>

The future World‐system? A dynamic model

World Futures ◽  
1995 ◽  
Vol 44 (4) ◽  
pp. 263-285 ◽  
Author(s):  
David Kowalewski ◽  
Dean Hoover
Keyword(s):  
Dynamic Model ◽  
World System ◽  
System A ◽  
The Future

scholarly journals Parameter Estimation for Dynamic Model of the Financial System

2015 ◽  
Vol 63 (6) ◽  
pp. 2051-2055
Author(s):  
Veronika Novotná ◽  
Vladěna Štěpánková
Keyword(s):  
Time Delay ◽  
Dynamic Model ◽  
Dynamic Models ◽  
Financial System ◽  
Point Of View ◽  
Investment Demand ◽  
History Of ◽  
New Perspective ◽  
The Interest Rate

Economy can be considered a large, open system which is influenced by fluctuations, both internal and external. Based on non-linear dynamics theory, the dynamic models of a financial system try to provide a new perspective by explaining the complicated behaviour of the system not as a result of external influences or random behaviour, but as a result of the behaviour and trends of the system’s internal structures. The present article analyses a chaotic financial system from the point of view of determining the time delay of the model variables – the interest rate, investment demand, and price index. The theory is briefly explained in the first chapters of the paper and serves as a basis for formulating the relations. This article aims to determine the appropriate length of time delay variables in a dynamic model of the financial system in order to express the real economic situation and respect the effect of the history of factors under consideration. The determination of the delay length is carried out for the time series representing Euro area. The methodology for the determination of the time delay is illustrated by a concrete example.

Academic Freedom and the Standards of Behavior

2007 ◽  
pp. 80-93 ◽  
Author(s):  
Ya. Kouzminov ◽  
M. Yudkevich
Keyword(s):  
Academic Freedom ◽  
Dynamic Model ◽  
Future Development ◽  
Educational System ◽  
Empirical Data ◽  
University Management ◽  
Current State ◽  
The Future ◽  
The Relationship

The article analyzes the activity of university lecturer and researcher and the need for special mechanisms providing its efficiency. The authors consider academic freedom as a parameter of the university’s environment and discuss the convention regulating the relationship between lecturers and university management. The factors of the destruction of this convention are analyzed. The dynamic model of the lecturers’ behavior is proposed and two scenarios for the future development ("teaching ratchet" and "academic ratchet") as well as the factors of choice between them are discussed. The empirical data on the development and current state of the Russian educational system is also taken into account.

scholarly journals Using climate change models to inform the recovery of the western ground parrot Pezoporus flaviventris

Oryx ◽  
2019 ◽  
Vol 54 (1) ◽  
pp. 52-61
Author(s):  
Shaun W. Molloy ◽  
Allan H. Burbidge ◽  
Sarah Comer ◽  
Robert A. Davis
Keyword(s):  
Climate Change ◽  
Habitat Degradation ◽  
Climate Change Impacts ◽  
Fire Regimes ◽  
Suitable Habitat ◽  
Distribution Models ◽  
Conservation Action ◽  
Change Models ◽  
Introduced Predators ◽  
The Future

AbstractTranslocation of species to areas of former habitat after threats have been mitigated is a common conservation action. However, the long-term success of reintroduction relies on identification of currently available habitat and areas that will remain, or become, habitat in the future. Commonly, a short-term view is taken, focusing on obvious and assumed threats such as predators and habitat degradation. However, in areas subject to significant climate change, challenges include correctly identifying variables that define habitat, and considering probable changes over time. This poses challenges with species such as the western ground parrot Pezoporus flaviventris, which was once relatively common in near-coastal south-western Australia, an area subject to major climate change. This species has declined to one small population, estimated to comprise < 150 individuals. Reasons for the decline include altered fire regimes, introduced predators and habitat clearing. The establishment of new populations is a high priority, but the extent to which a rapidly changing climate has affected, and will continue to affect, this species remains largely conjecture, and understanding probable climate change impacts is essential to the prioritization of potential reintroduction sites. We developed high-resolution species distribution models and used these to investigate climate change impacts on current and historical distributions, and identify locations that will remain, or become, bioclimatically suitable habitat in the future. This information has been given to an expert panel to identify and prioritize areas suitable for site-specific management and/or translocation.

Using species distribution models to effectively conserve biodiversity into the future

Biodiversity ◽  
2008 ◽  
Vol 9 (3-4) ◽  
pp. 39-46 ◽  
Author(s):  
Heather M. Kharouba ◽  
Julie L. Nadeau ◽  
Eric Young ◽  
Jeremy T. Kerr
Keyword(s):  
Species Distribution ◽  
Species Distribution Models ◽  
Distribution Models ◽  
The Future

New distributions of the statistical time delay of electrical breakdown in nitrogen

2006 ◽  
Vol 39 (15) ◽  
pp. 3317-3322 ◽  
Author(s):  
V Lj Marković ◽  
S R Gocić ◽  
S N Stamenković
Keyword(s):  
Time Delay ◽  
Electrical Breakdown ◽  
Statistical Time
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