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Stability region
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In low-cost permanent magnet synchronous motor (PMSM) drive systems, the rotor position is usually estimated based on the back-electromotive force. However, such estimation methods have the common drawback of having large errors in low-speed regions. In order to solve that drawback in the startup phase, the I-f startup method is studied as its compatibility with the FOC control structure. The purpose of such a method is to make the motor accelerate and overcome the low-speed threshold.
8p
vialicene
02-07-2024
1
0
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The aim of a food distribution center is to meet food supply chain chain throughout the region, avoid food scarcity, stabilize food prices and maintain price disparities thus they can be properly met. The role of food hubs is to aggregate, distribute and market food at the farmer, trader level, and to function the role of the BUMD in realizing the operation of the food distribution center.
13p
longtimenosee07
29-03-2024
6
2
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Towards the growth of professionalization levels is risk-taking, which has a significant impact on business. Based on the results obtained, the main trends of the modern development of global family policy are highlighted, including the degree of its impact on the economic stability and the competitiveness of the country. The research is based on four macro-regions of the world: Europe, America, Asia, as well as Australia and New Zealand.
7p
longtimenosee06
27-03-2024
8
2
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This paper presents some results on the linear stability research of Stiffened Functionally Graded Carbon NanoTube-Reinforced Composite (SFG-CNTRC) plates under static in-plane loads by the Finite Element Method (FEM) and a new four-variable refined plate theory.
19p
vijeff
30-11-2023
6
3
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Ebook "Dealing with multiple currencies in transitional economies: The scope for regional cooperation in Cambodia, the Lao People’s Democratic Republic, and Viet Nam" reviews the main issues related to the monetary and exchange rate policy decisions taken by CLV national authorities, and discusses the options and opportunities available for enhancing monetary and financial stability in the ASEAN region.
428p
loivantrinh
29-10-2023
9
2
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Ebook "Taxation and development - A comparative study" examines the tax systems of some twenty countries to determine whether their tax laws are used to support growth and development across borders in lower-income and poor countries. Given the critical economic development needs of poorer countries and the importance of stability in these regions to the security of populations throughout the world, the use of a country’s tax laws to support investment in the developing world gains crucial significance.
382p
loivantrinh
29-10-2023
4
3
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Nghe An has the biggest area of forest and forestland in the North Central region and play an important role in environmental protection, biodiversity conservation, poverty reduction and social stability. Nghe An forestry sector has achieved many results in forest protection and development, forest cover is increasing, biodiversity is preserved, the economic structure of the industry has changed positively.
12p
vimulcahy
02-10-2023
6
1
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The theory of differential equations has been widely known and developed in recent years. One of the issues that many authors give their undivided attention to is the stability boundary of nonlinear dynamical systems.
13p
viberkshire
09-08-2023
5
3
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In this paper, the problem of finite-region stability is studied for a class of two-dimensional (2-D) singular systems described by Roesser model with directional delays. Based on the regularity, the underlying singular 2-D systems are first decomposed into fast- and slow-subsystems corresponding to dynamics and algebraic parts.
10p
vispiderman
15-06-2023
8
3
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DNA methylation plays a key role in development, contributes to genome stability, and may also respond to external factors supporting adaptation and evolution. To connect different types of stimuli with particular biological processes, identifying genome regions with altered 5-methylcytosine distribution at a genome-wide scale is important.
9p
vinarcissa
21-03-2023
4
1
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The theory of differential equations has been widely known and developed in recent years. Many researchers have drawn attention to the problem of finding the stability region of a nonlinear dynamical system in technical models, which is a complicated issue in the stability theory of dynamical systems.
13p
viwmotors
02-12-2022
11
4
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This paper presents the results of calculations to assess the effects of the plant and proposes solutions to improve the Vietnam power system stability. Operating mode of the plant may alter the stable reserve ratio of the whole system.
4p
vijaguar
16-11-2022
12
1
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This article on regional economic diversity addresses several issues: theoretical foundations for arguments forwarding increased economic diversity as a development goal; common empirical measures of economic diversity; empirical literature on economic diversity and its effect on regional economic stability.
24p
ngoccthanh
29-06-2022
5
2
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China’s digital economy has expanded rapidly in recent years. While average digitalization of the economy remains lower than in advanced economies, digitalization is already high in certain regions and sectors, in particular e-commerce and fintech, and costal regions. Such transformation has boosted productivity growth, with varying impact on employment across sectors.
24p
maingoc84
14-02-2022
44
2
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The 3′ untranslated region (UTR) plays critical roles in determining the level of gene expression through effects on activities such as mRNA stability and translation. Functional elements within this region have largely been identified through analyses of native genes, which contain multiple co-evolved sequence features.
27p
viarchimedes
26-01-2022
8
0
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3′-Untranslated regions (3′UTRs) play crucial roles in mRNA metabolism, such as by controlling mRNA stability, translation efficiency, and localization. Intriguingly, in some genes the 3′UTR is longer than their coding regions, pointing to additional, unknown functions.
24p
viarchimedes
26-01-2022
7
0
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Transcripts with alternative 5′-untranslated regions (UTRs) result from the activity of alternative promoters and they can determine gene expression by influencing its stability and translational efficiency, thus executing complex regulation of developmental, physiological and pathological processes.
9p
vielonmusk
21-01-2022
10
0
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The effect of washing stabilized and unstabilized blown extruded films of low-density polyethylene (LDPE) used for greenhouse coverings naturally weathered in a sub-Saharan facility at Ghardaïa (Algeria) for 19 and 6 months, respectively, was studied. A comparison between unwashed and daily washed samples was done. The changes in the films’ properties were followed at regular intervals using various characterization methods (physicochemical and mechanical).
20p
tudichquannguyet
29-11-2021
14
2
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The aims and purposes of ASEAN are to accelerate economic growth, social progress, and cultural development in the region, to promote regional peace and stability, to promote collaboration and mutual assistance on matters of common interest and to maintain close, beneficial co-operation with existing international organizations with similar aims and purposes.
7p
viuchinaga2711
21-10-2021
9
1
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Small RNAs (sRNAs) are key regulators of gene expression in bacteria. In addition to modulating translation initiation, sRNAs can interact with mRNA coding regions to regulate mRNA stability and translation efficiency, enhancing or impeding progression of the ribosome along the mRNA.
11p
vitzuyu2711
29-09-2021
14
1
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