Tổng hợp tất cả tài liệu, ebook, giáo trình Các Môn Đại Cương chọn lọc và hay nhất.
If there is no trajectory of F starting at x can reach K , then. If x K then we set T x ( ) 0 . It is well-known that, under assumptions (F1) - (F3), the infimum in (1.2) is attained and the minimum time function T is lower semicontinuous [21]. The minimum time function is an important optimal value function of optimal control theory. This ...
9 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 409 | Lượt tải: 0
Abstract: Three Trichoderma isolates (THDU-1, THDU-2, and THDU-3) were isolated from the root zone area of healthy bananas on the farm in Ba Thuoc district, Thanh Hoa province. All of these isolates showed high inhibitory activity against soil borne diseases Rhizoctonia solani and Sclerotium rolfsii. Our study proposed a protocol of Trichoderma ...
5 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 333 | Lượt tải: 0
Abstract: A trial of Neolamarckia cadamba in Thanh Hoa province has the following results: Neolamarckia cadamba is the easy growing and photophillic tree, highly adaptable to natural conditions of Thuong Xuan, Nhu Thanh, and Tinh Gia which are representatives of the mountainous area, midland area and delta coastal area, respectively, in Thanh Ho...
11 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 332 | Lượt tải: 0
1. Introduction The perovskite manganites (La,Sr)MnB'O3, where B‟ stands for the transition elements have recently attracted a wide range of research in laboratories because of their potential applications in electric devices that operate based on colossal magnetoresistance effect (CMR) and magnetocaloric effect (MCE) [1-4]. Basically, the magnetic...
11 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 327 | Lượt tải: 0
1. Introduction Two-dimensional systems have many applications in different arears as geographical data processing, electrical circuit networks, power systems, energy exchange processes, multibody mechanics, process control, aerospace engineering and physical processes [18, 4, 9, 14]. In recent years, 2-D switched systems have attracted the att...
11 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 344 | Lượt tải: 0
1. Introduction Singular systems have many applications in reality such as electrical circuit network, power systems, aerospace engineering, network control, economic systems [6,19]. Therefore, these systems have been extensively studied over the past few decades and have yielded significant results. Using Lyapunov‟s approach to reach out to sc...
11 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 387 | Lượt tải: 0
Abstract: In this paper, we study the first initial boundary value problem for a class of quasilinear degenerate parabolic equations involving weighted p-Laplacian operators. The existence and uniqueness of a weak solution with respect to initial values is ensured by an application of the Faedo - Galerkin approximation and compact method. Moreov...
15 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 361 | Lượt tải: 0
Abstract: Consider a stochastic evolution equation containing Stratonovich-multiplicative white noise of the form where the partial differential operator A is positive definite, self-adjoint with a discrete spectrum; and the nonlinear part f satisfies the -Lipschitz condition with belonging to an admissible function space. We prove...
16 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 312 | Lượt tải: 0
4. Conclusion The theorems 3.4 and 3.5 solve some random variational inequalities for semi H-monotone and weakly semi H-monotone mappings. These are good results in solving random variational inequalities for semi H-monotone and weakly semi Hmonotone mappings.
6 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 340 | Lượt tải: 0
Abstract: The rapid micropropagation of Dendrobium chrysotoxum by applying in vitro tissue culture has the following results: The VW containing 20g/l sucrose and 8g/l agar was the most suitable medium for seed germination. The appropriate medium for rapid protocorm multiplication and shoot formation was the basic MS supplemented with 20g/l sucro...
7 trang | Chia sẻ: thanhle95 | Ngày: 09/07/2021 | Lượt xem: 391 | Lượt tải: 0