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        A temporal–spatiotemporal domain transformation-based modeling method for nonlinear distributed parameter systems

        Jin Xi,Wu Daibiao,Yang Haidong,Zhu Chengjiu,Shen Wenjing,Xu Kangkang 한국CDE학회 2023 Journal of computational design and engineering Vol.10 No.3

        Complex nonlinear distributed parameter systems (DPSs) exist widely in advanced industrial thermal processes. The modeling of such highly nonlinear systems is a challenge for traditional time/space-separation-based methods since they employ linear methods for the model reduction and spatiotemporal reconstruction, which may lead to an inefficient application of the nonlinear spatial structure features represented by the spatial basis functions. To overcome this problem, a novel spatiotemporal modeling framework composed of nonlinear temporal domain transformation and nonlinear spatiotemporal domain reconstruction is proposed in this paper. Firstly, local nonlinear dimension reduction based on the locally linear embedding technique is utilized to perform nonlinear temporal domain transformation of the spatiotemporal output of nonlinear DPSs. In this step, the original spatiotemporal data can be directly transformed into low-order time coefficients. Then, the extreme learning machine (ELM) method is utilized to establish a temporal model. Finally, through the spatiotemporal domain reconstruction based on the kernel-based ELM method, the prediction of the temporal dynamics obtained from the temporal model can be reconstructed back to the spatiotemporal output. The effectiveness and performance of the proposed method are demonstrated in experiments on the thermal processes of a snap curing oven and a lithium-ion battery.

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        Recent Developments in the Use of Intralesional Injections Keloid Treatment

        Aurelia Trisliana Perdanasari,Davide Lazzeri,Weijie Su,Wenjing Xi,Zhang Zheng,Li Ke,Peiru Min,Shaoqing Feng,Yixin Zhang,Paolo Persichetti 대한성형외과학회 2014 Archives of Plastic Surgery Vol.41 No.6

        Keloid scars are often considered aesthetically unattractive and frustrating problems thatoccur following injuries. They cause functional and cosmetic deformities, displeasure, itching,pain, and psychological stress and possibly affect joint movement. The combination of thesefactors ultimately results in a compromised quality of life and diminished functionalperformance. Various methods have been implemented to improve keloid scars using bothsurgical and non-surgical approaches. However, it has proven to be a challenge to identify auniversal treatment that can deliver optimal results for all types of scars. Through a PubMedsearch, we explored most of the literature that is available about the intralesional injectiontreatment of hypertrophic scars and keloids and highlights both current (corticosteroid,5-fluorouracil, bleomycin, interferon, cryotherapy and verapamil) and future treatments(interleukin-10 and botulinum toxin type A). The reference lists of retrieved articles were alsoanalysed. Information was gathered about the mechanism of each injection treatment, itsbenefits and associated adverse reactions, and possible strategies to address adverse reactionsto provide reliable guidelines for determining the optimal treatment for particular types ofkeloid scars. This article will benefit practitioners by outlining evidence-based treatmentstrategies using intralesional injections for patients with hypertrophic scars and keloids.

      • SCOPUSKCI등재

        Recent Developments in the Use of Intralesional Injections Keloid Treatment

        Perdanasari, Aurelia Trisliana,Lazzeri, Davide,Su, Weijie,Xi, Wenjing,Zheng, Zhang,Ke, Li,Min, Peiru,Feng, Shaoqing,Zhang, Yixin,Persichetti, Paolo Korean Society of Plastic and Reconstructive Surge 2014 Archives of Plastic Surgery Vol.41 No.6

        Keloid scars are often considered aesthetically unattractive and frustrating problems that occur following injuries. They cause functional and cosmetic deformities, displeasure, itching, pain, and psychological stress and possibly affect joint movement. The combination of these factors ultimately results in a compromised quality of life and diminished functional performance. Various methods have been implemented to improve keloid scars using both surgical and non-surgical approaches. However, it has proven to be a challenge to identify a universal treatment that can deliver optimal results for all types of scars. Through a PubMed search, we explored most of the literature that is available about the intralesional injection treatment of hypertrophic scars and keloids and highlights both current (corticosteroid, 5-fluorouracil, bleomycin, interferon, cryotherapy and verapamil) and future treatments (interleukin-10 and botulinum toxin type A). The reference lists of retrieved articles were also analysed. Information was gathered about the mechanism of each injection treatment, its benefits and associated adverse reactions, and possible strategies to address adverse reactions to provide reliable guidelines for determining the optimal treatment for particular types of keloid scars. This article will benefit practitioners by outlining evidence-based treatment strategies using intralesional injections for patients with hypertrophic scars and keloids.

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