In this paper, we study the optimal location query problem based on road networks. Specifically, have a network which some clients and servers are located. Each client finds server that is closest to her for service cost of getting served equal (network) distance between serving multiplied by weight or importance. The find setting up new such maximum being (including server) minimized. This has been studied before, but state-of-the-art still not efficient enough. propose an algorithm...

The most efficient known approach for shortest distance querying on road networks is via a tree decomposition based 2-hop labeling index. A major challenge here how to reduce the query time by reducing label size. To this end, we propose P2H with novel ideas of projected vertex separators and optimized selection separators. We also introduce mechanisms index maintenance edge weight updating. Our experiments multiple real show that can greatly effective sizes over existing algorithms. For...

In this article, we study an optimal location query based on a road network. Specifically, given network containing clients and servers, finds the such that when new server is set up at location, certain cost function computed servers (including server) optimized. Two types of functions, namely, MinMax MaxSum, have been used for query. The problem with as called query, which setting maximum client being served by his/her closest minimized. MaxSum sum weights attracted maximized. correspond...

The real modified Korteweg–de Vries equation governs the modulation of weakly nonlinear waves. We first review multiple soliton solutions to mKdV by means inverse scattering method in detail. It is found are related pure imaginary discrete eigenvalues, while breathers derived from complex eigenvalues. A novel expression for mulitple solution presented which used construct and breather solutions. By introducing resonance condition solitons breathers, some resonant structures solitons, or...

We study the problem of optimal location querying for location-based services in road networks, which aims to find locations new servers or facilities. The existing solutions on this consider only cases with one server. When two more are be set up, minmax cost criteria, MinMax, becomes NP-hard. In work we identify some useful properties about potential servers, from derive a novel algorithm and show that it is efficient when number small. large, propose an 3-approximate algorithm. verify...

Abstract With the increasing of requirements from many aspects, various queries and analyses arise focusing on social network. Time is a common necessary dimension in types networks. Social networks with time information are called temporal networks, which can be when user sends message to another user. Keywords search consists finding relationships between group users that has set query labels valid within interval. It provides assistance network analysis, classification users, community...

Abstract We discuss a fifth order KdV (FOKdV) equation via novel travelling wave method by introducing background term. Results show that the term plays an essential role in finding new abundant structures, such as soliton induced negative background, periodic excited positive few-cycle-pulse (FCP) solitons with and without molecules background. The FCP are first obtained for FOKdV equation.

B(3)-Arylation is unfavorable because the steric repulsion between substituent group on C(2) and metal moiety would lead to significant distortion of o -carborane result in a higher activation energy for reductive elimination.

The main protease is regarded as an essential drug target for treating Coronavirus Disease 2019. In the present study, 13 marketed drugs were investigated to explore possible binding mechanism, utilizing molecular docking, dynamics simulation, and MM-PB(GB)SA energy calculations. Our results suggest that fusidic acid, polydatin, SEN-1269, AZD6482, UNC-2327 have high affinities of more than 23 kcal mol-1. A descriptor was defined energetic occupancy subpocket, it found S4 had a low less 10%...

硬化性多囊性腺瘤（SPA）是一种罕见的唾液腺硬化性肿瘤，好发于腮腺，镜下主要由增生的微囊、腺泡及导管样结构组成，腺上皮细胞细胞质呈泡沫状及空泡状，具有轻度非典型性和顶浆分泌性。由于SPA较罕见，易误诊为其他肿瘤。本文报道1例左侧腮腺SPA的病理变化及其鉴别诊断，旨在提高病理医师对SPA的认知及诊断水平。.

Off-road environments present significant challenges for autonomous ground vehicles due to the absence of structured roads and presence complex obstacles, such as uneven terrain, vegetation, occlusions. Traditional perception algorithms, designed primarily environments, often fail under these conditions, leading inaccurate traversability estimations. In this paper, ORDformer, a novel multimodal method that combines LiDAR point clouds with monocular images, is proposed generate dense...

Through the positive analysis of 373 employees who come from all kinds enterprises and institutions in Wuhan other areas, this paper examines relationship among personality trait working attitude turnover intention. The research shows that locus control significantly affects staff, there is interaction between job satisfaction organizational commitment which both affect intention collectively, with latter having stronger more stable impact. Meanwhile, partially mediates influence fully mediated

Abstract The [3 + 3] cylcloaddition/annulation is an important complementary for construction of six‐membered ring. With addition organophosphine to the Morita‐Baylis‐Hillman (MBH) carbonate, a potential C3 synthon can be furnished. In this work, catalytic mechanisms using as nucleophilic or electrophilic dipole react with cyclohexa‐2,5‐dienone‐substituted benzenesulfonamide are studied by density functional theory method. computational results reveal that amide anion allylic phosphonium...

Optimal location querying (OLQ) in road networks is important for various applications. Existing work assumes no labels servers and that a client only visits the nearest server. These assumptions are not realistic it renders existing useful many cases. In this paper, we introduce KOLQ problem which considers k of clients labeled servers. We also proposed algorithms problem. Extensive experiments on real illustrate efficiency our solutions.

k-Regret Querying is a well studied problem to query dataset <inline-formula><tex-math notation="LaTeX">$D$</tex-math></inline-formula> for small subset notation="LaTeX">$S$</tex-math></inline-formula> of size notation="LaTeX">$k$</tex-math></inline-formula> with the minimal regret ratio unknown utility functions. In this paper, we point out some issues in -Regret Querying, including assumption non-negative and lack shift invariance. Known algorithms are limited scope result quality, based...

滑膜肉瘤是一种具有间叶和上皮双相性分化的恶性肿瘤，在细胞遗传学上存在X与18号染色体的特异性易位，滑膜肉瘤可发生在任何部位，发生于颞下窝部位则罕见。根据组织学形态可分为双相分化型、梭形细胞型、单相上皮型和低分化（圆形细胞）型四型，其中单相上皮型、低分化型是较为少见的亚型。本文报道1例颞下窝滑膜肉瘤，经确诊后行肿瘤边缘广泛切除，术后随访6个月未复发。.

We study the problem of optimal location querying for based services in road networks, which aims to find locations new servers or facilities. The existing solutions on this consider only cases with one server. When two more are be set up, minmax cost criteria, MinMax, becomes NP-hard. In work we identify some useful properties about potential servers, from derive a novel algorithm and show that it is efficient when number small. large, propose an 3-approximate algorithm. verify experiments...

睾丸绒毛膜癌是一种分泌绒毛膜促性腺激素的高度恶性滋养细胞肿瘤，侵袭性强，易发生早期血行转移，常见转移部位为肺、肝、脑等，转移至口腔者罕见。由于肿瘤转移灶易与口腔原发性肿瘤混淆，且睾丸绒毛膜癌发病率低，增加了诊断难度，缺少针对性的治疗方案，不利于患者预后。本文报道1例睾丸绒毛膜癌转移至牙龈的病例，旨在提高临床医师及病理医师对口腔转移性肿瘤的诊断水平及认识。.