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Solution and stability of continuous-time cross-dimensional linear systems

Qing-le Zhang, Biao Wang, Jun-e Feng,zqlcfc03@163.com,wangbiao9956@163.com,fengjune@sdu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 2, Pages 141-286 doi: 10.1631/FITEE.1900504

Abstract: We investigate the solution and stability of continuous-time linear systems (CCDLSs) with dimension bounded by and . Using the integral iteration method, the solution to CCDLSs can be obtained. Based on the new algebraic expression of the solution and the Jordan decomposition method of matrix, a necessary and sufficient condition is derived for judging whether a CCDLS is asymptotically stable with a given initial state. This condition demonstrates a method for finding the domain of attraction and its relationships. Then, all the initial states that can be stabilized are studied, and a method for designing the corresponding controller is proposed. Two examples are presented to illustrate the validity of the theoretical results.

Keywords： Cross-dimensional V-addition V-product Asymptotic stability Stabilization

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Oral product input to the GI tract: GIS an oral product performance technology

Gordon L. Amidon, Yasuhiro Tsume

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4, Pages 516-520 doi: 10.1007/s11705-017-1658-7

Abstract: The patient receives a pharmaceutical product, not a drug.Therefore, it is the product we must optimize for the patients.to assure the safety and efficacy of pharmaceutical products, we need an predictive tool for oral product

Keywords： GIS in vivo predictive dissolution ketoconazole BCS subclassification supersaturation

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Review of sentiment analysis: An emotional product development view

Frontiers of Engineering Management Pages 592-609 doi: 10.1007/s42524-022-0227-z

Abstract: Conveying consumers’ specific emotions in new products, referred to as emotional product developmentfeatures by mixing technical product features and consumers’ emotional perceptions.Furthermore, after conceptualizing emotion as Kansei and introducing emotional product development andemotional opinions from online reviews, thus cannot realize data-driven emotional product developmentThis study opens a broad door to aspect-level SA and its integration with emotional product development

Keywords： sentiment analysis emotion product development Kansei Engineering

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Lean Product Development—Faster, Better … Cleaner?

Geert Letens

Frontiers of Engineering Management 2015, Volume 2, Issue 1, Pages 52-59 doi: 10.15302/J-FEM-2015007

Abstract: To address this challenge, lean product development has emerged to become the leading improvement methodologyWhile lean product development has its origin in the best practice studies of Japanese car manufacturersand to ground the key aspects of lean product development based on insights from six studies publishedThis demonstrates how better and faster product development can be achieved through the integration of, seems imperative to investigate the integration of lean product development and eco-design principles

Keywords： lean product development sustainability engineering responsible design

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Autoimmunity in acute ischemic stroke and the role of blood—brain barrier: the dark side or the light one?

Nikolay V. Tsygan, Alexandr P. Trashkov, Igor V. Litvinenko, Viktoriya A. Yakovleva, Alexandr V.

Frontiers of Medicine 2019, Volume 13, Issue 4, Pages 420-426 doi: 10.1007/s11684-019-0688-6

Abstract: This article presents a synopsis of the current data on the mechanisms of blood—brain barrier (BBB) alteration and autoimmune response in acute ischemic stroke. Most researchers confirm the relationship between the severity of immunobiochemical changes and clinical outcome of acute ischemic stroke. Ischemic stroke is accompanied by aseptic inflammation, which alters the brain tissue and exposes the co-stimulatory molecules of the immune system and the neuronal antigens. To date, BBB is not considered the border between the immune system and central nervous system, and the local immune subsystems are found within and behind the BBB. BBB disruption contributes to the leakage of brain autoantigens and induction of secondary autoimmune response to neuronal antigens and long-term inflammation. Glymphatic system function is altered and jeopardized both in hemorrhagic and ischemic stroke types. The receptors of innate immunity (toll-like receptor-2 and toll-like receptor-4) are also involved in acute ischemia—reperfusion injury. Immune response is related to the key processes of blood clotting and fibrinolysis. At the same time, the stroke-induced immune activation may promote reparation phenomena in the brain. Subsequent research on the reduction of the acute ischemic brain injury through the target regulation of the immune response is promising.

Keywords： stroke blood–brain barrier autoimmunity innate immunity inflammation cell death

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Emulsification for castor biomass oil

Dongxiang ZHANG, Yuanping LIN, Anmei LI, V. V. TARASOV

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1, Pages 96-101 doi: 10.1007/s11705-010-0553-2

Abstract: The effect of the emulsifier formula on the stability of castor oil-water system was studied through compounding three groups of emulsifiers from the aspects of stability factor of absorbance, centrifuge stability, demulsification time in quiescence, appearance of the droplets, and viscosity. The best emulsifier formula for castor biomass oil was the composite formula of sorbitan monooleate and polyoxyethylene sorbitan monostearate. Correlation exists between the stability of emulsion and the viscosity/particle size of the droplets, with better stability in the case of greater viscosity or narrower distribution of particle size in the emulsion of castor oil-water system. Methanol added to the castor oil-water system may decrease the viscosity of the emulsion. Comparing the castor oil-water emulsion with methanol-castor oil-water emulsion, the optimal hydrophilic and lipophilic balance (HLB) value based on castor oil-water system was acquired between 6.6 and 7.5, while the optimal HLB value based on the methanol-castor oil-water system was between 5.5 and 6.0. The optimal HLB value of methanol-castor oil-water system gradually moved to that of castor oil-water emulsion with adding more water.

Keywords： castor oil biomass oil emulsification stability viscosity corrosivity

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An energy consumption prediction approach of die casting machines driven by product parameters

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4, Pages 868-886 doi: 10.1007/s11465-021-0656-0

Abstract: approach for energy consumption prediction that can provide support for process parameter optimization and productgap, this paper proposes an energy consumption prediction approach for die casting machines driven by productConsequently, a systematic energy consumption prediction approach for die casting machines, involving product

Keywords： die casting machine energy consumption prediction product parameters

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Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1, Pages 102-115 doi: 10.1007/s11705-022-2179-6

Abstract: Herein, via a one-pot hydrothermal method, Ni/Fe/V ternary layered double hydroxides (NiFeV-LDH) derivedBy changing the feeding ratio of Fe and V salts, the prepared ternary hydroxides were optimized.At an Fe:V ratio of 0.5:0.5, NiFeV-LDH exhibits outstanding OER activity superior to that of the binarybimetallic hydroxide layers: (a) Fe plays a crucial role as the active site; (b) electron-withdrawing Vstabilizes the high valence state of Fe, thus accelerating the OER process; (c) V further offers great

Keywords： oxygen evolution reaction electrocatalysts ternary layered double hydroxides long-term stability

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A hybrid method for product low-end disruptive innovation

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0690-6

Abstract: Product innovation is often a process for improving existing products.Low-end disruptive innovation (LDI) enables a product to meet the most price-sensitive customers in theThis study proposes a hybrid method for the product LDI in two levels of the product design based onFeasible areas of the product LDI are determined using a hybrid relational function model to identifyThe final LDI scheme is formed and evaluated based on the essential characteristics of the product LDI

Keywords： low-end disruptive innovation product design design improvement theory of inventive problem solving

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Isomorphism analysis on generalized modules oriented to the distributed parameterized intelligent product

Shasha ZENG, Weiping PENG, Tiaoyu LEI

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1, Pages 12-23 doi: 10.1007/s11465-019-0555-9

Abstract: The distributed parameterized intelligent product platform (DPIPP) contains many agents of a product

Keywords： distributed parameterized intelligent product platform generalized module isomorphism analysis product

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Association between ICU quality and in-hospital mortality of V-V ECMO-supported patients—the ECMO quality

Frontiers of Medicine doi: 10.1007/s11684-023-1014-x

Abstract: explore the influence of intensive care unit (ICU) quality on in-hospital mortality of veno-venous (V-VThe study involved all V-V ECMO-supported patients in 318 of 1700 tertiary hospitals from 2017 to 2019Among the 2563 V-V ECMO-supported patients in 318 hospitals, a significant correlation was found betweenand the total ICU mortality rate were independent risk factors for higher in-hospital mortality of V-VMeanwhile, the V-V ECMO center volume was a protective factor (cutoff of ≥ 50 cases within the 3-year

Keywords： veno-venous extracorporeal membrane oxygenation in-hospital mortality high-volume centers quality control intensive care unit capacity parameters

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Highlights in agri-product quality and safety

Guanghong ZHOU

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 3, Pages 289-290 doi: 10.15302/J-FASE-2018236

Abstract:

Keywords： valign= top class= J_zhaiyao

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Massively efficient filter for topology optimization based on the splitting of tensor product structure

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0710-6

Abstract: forward a massively efficient filter for topology optimization (TO) utilizing the splitting of tensor productby the splitting pipeline as that applied to implicit filter, is established in terms of the tensor productTherefore, the proposed filter is massively improved by the splitting of tensor product structure and

Keywords： topology optimization isogeometric analysis finite element analysis tensor product structure sensitivity

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A concise review about fracture assessments of brittle solids with V-notches

Hsien-Yang YEH, Bin YANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2, Pages 478-485 doi: 10.1007/s11709-019-0520-z

Abstract: review of recent studies about the fracture assessments of elastic brittle solid materials containing V-notchesIn this preliminary and brief survey, elastic stress distributions in V-notched solids are discussed

Keywords： fracture assessment brittle solids V-notches review