Zobrazeno 1 - 10
of 1 091
pro vyhledávání: '"Zeng Ji"'
Publikováno v:
Polish Maritime Research, Vol 30, Iss 3, Pp 153-162 (2023)
Mooring ropes are essential components of ships and offshore floating structures and they are subjected to cyclic axial loads. This study investigates the evolution of the full-cycle stiffness of fibre polyester ropes under long-term static and dynam
Externí odkaz:
https://doaj.org/article/a68d1e1368aa41ffa0f5d3993d7e72e2
Publikováno v:
Frontiers in Energy Research, Vol 11 (2023)
The limestone reservoir of the Da’anzhai section is the main production layer of Jurassic tight oil in central Sichuan, with tight and strongly heterogeneous reservoir rocks. In the early stages, small-scale plug removal and acidification technique
Externí odkaz:
https://doaj.org/article/f5a17e9b1bc7460c96e675480542bc12
Publikováno v:
Polish Maritime Research, Vol 29, Iss 2, Pp 3-11 (2022)
To determine the loading conditions considering the action of both bending and torque moment for a passenger catamaran moving among waves, a method for calculating equivalent design waves under multiple load control parameters was derived based on wa
Externí odkaz:
https://doaj.org/article/4e12d7f7181d408dafc1520acdefb787
Publikováno v:
Polish Maritime Research, Vol 27, Iss 4, Pp 130-138 (2020)
Punch-through is a major threat to the jack-up unit, especially at well sites with layered stiff-over-soft clays. A model is proposed to predict the spudcan penetration resistance in stiff-over-soft clays, based on the random forest (RF) method. The
Externí odkaz:
https://doaj.org/article/e60610771ee2422199a29c9b4c25836c
For an ordered point set in a Euclidean space or, more generally, in an abstract metric space, the ordered Nearest Neighbor Graph is obtained by connecting each of the points to its closest predecessor by a directed edge. We show that for every set o
Externí odkaz:
http://arxiv.org/abs/2406.08913
In this paper, we consider saturation problems related to the celebrated Erd\H{o}s--Szekeres convex polygon problem. For each $n \ge 7$, we construct a planar point set of size $(7/8) \cdot 2^{n-2}$ which is saturated for convex $n$-gons. That is, th
Externí odkaz:
http://arxiv.org/abs/2312.01223
Autor:
Suk, Andrew, Zeng, Ji
As a variant of the celebrated Szemer\'edi--Trotter theorem, Guth and Katz proved that $m$ points and $n$ lines in $\mathbb{R}^3$ with at most $\sqrt{n}$ lines in a common plane must determine at most $O(m^{1/2}n^{3/4})$ incidences for $n^{1/2}\leq m
Externí odkaz:
http://arxiv.org/abs/2311.04804
Let $\alpha(\mathbb{F}_q^d,p)$ denote the maximum size of a general position set in a $p$-random subset of $\mathbb{F}_q^d$. We determine the order of magnitude of $\alpha(\mathbb{F}_q^2,p)$ up to polylogarithmic factors for all possible values of $p
Externí odkaz:
http://arxiv.org/abs/2309.07744
Autor:
Zeng, Ji
We prove that every $n$-vertex complete simple topological graph generates at least $\Omega(n)$ pairwise disjoint $4$-faces. This improves upon a recent result by Hubard and Suk. As an immediate corollary, every $n$-vertex complete simple topological
Externí odkaz:
http://arxiv.org/abs/2308.04742
Autor:
Suk, Andrew, Zeng, Ji
A finite point set in $\mathbb{R}^d$ is in general position if no $d + 1$ points lie on a common hyperplane. Let $\alpha_d(N)$ be the largest integer such that any set of $N$ points in $\mathbb{R}^d$ with no $d + 2$ members on a common hyperplane, co
Externí odkaz:
http://arxiv.org/abs/2211.15968