Reverse skyline queries over uncertain databases have many important applications such as sensor data monitoring and business planning. Due to the existence of uncertainty in real-world data, answering reverse accurately efficiently has become increasingly important. In this paper, we model probabilistic query on both monochromatic bichromatic cases, propose effective pruning methods reduce search space processing. Moreover, efficient procedures been presented seamlessly integrating proposed...

With the rapid development of mobile devices and crowdsourcing platforms, spatial has attracted much attention from database community, specifically, refers to sending a location-based request workers according their positions. In this paper, we consider an important problem, namely reliable diversity-based (RDB-SC), in which tasks (such as taking videos/photos landmark or firework shows, checking whether not parking spaces are available) time-constrained, moving towards some directions. Our...

Spatial crowdsourcing refers to a system that periodically assigns number of location-based workers with spatial tasks nearby (e.g., taking photos or videos at some locations). Previous works on the usually designed task assignment strategies maximize scores, which are however only based available workers/tasks in time point assigning workers/tasks. These may achieve local optimality, due neglect future join system. In contrast, this paper, we aim "globally" optimal assignments, by...

With the rapid development of mobile devices and crowdsourcing platforms, spatial has attracted much attention from database community. Specifically, refers to sending location-based requests workers, based on their current positions. In this paper, we consider a scenario, in which each worker set qualified skills, whereas task (e.g., repairing house, decorating room, performing entertainment shows for ceremony) is time-constrained, under budget constraint, required skills. Under will study...

In this work, Cu nanoclusters (Cu NCs) with strong aggregation-induced electrochemiluminescence (AIECL) as emitters were used to construct an ECL biosensor for ultrasensitive detection of microRNA-141 (miR-141). Impressively, the signals enhanced increased content Cu(I) in aggregative NCs. When ratio Cu(I)/Cu(0) NCs was 3.2, aggregates showed highest intensity, which could enhance cuprophilic Cu(I)···Cu(I) interaction form rod-shaped restricting nonradiative transitions obviously improve...

Since many graph data are often noisy and incomplete in real applications, it has become increasingly important to retrieve graphs g the database D that approximately match query q, rather than exact matching. In this paper, we study problem of similarity search, which retrieves similar a given under constraint edit distance. We propose systematic method for edit-distance based search problem. Specifically, derive two lower bounds, i.e., partition-based branch-based from different...

Introduction The study aimed to explore the association of serum 25(OH)D 3 and hepatic steatosis in non-alcoholic fatty liver disease (NAFLD) patients determine whether effect vitamin D (VD) is mediated by activation peroxisome proliferator-activated receptor α (PPARα) pathway. Methods contained a case-control study, vivo vitro experiments. A was conducted compare parameters between NAFLD controls evaluate NAFLD. In male Wistar rats were randomly divided into control model groups, fed...

In this study, a novel europium dual-ligand metal–organic gel (Eu-D-MOGs) with high-efficient anodic annihilation electrochemiluminescence (ECL) was synthesized as an ECL emitter to construct biosensor for ultrasensitive detection of microRNA-221 (miR-221). Impressively, compared the signal single-ligand gels (Eu-S-MOGs), Eu-D-MOGs significantly improved since two organic ligands could jointly replace H2O and coordinate Eu3+, which remarkably reduce nonradiative vibrational energy transfer...

Recently, many new applications, such as sensor data monitoring and mobile device tracking, raise up the issue of uncertain management. Compared to "certain" data, in database are not exact points, which, instead, often locate within a region. In this paper, we study ranked queries over data. fact, have been studied extensively traditional literature due their popularity decision making, recommendation raising, mining tasks. Many proposals made order improve efficiency answering queries....

The importance of query processing over uncertain data has recently arisen due to its wide usage in many real-world applications. In the context databases, previous works have studied types such as nearest neighbor query, range <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">top</i> - xmlns:xlink="http://www.w3.org/1999/xlink">k</i> xmlns:xlink="http://www.w3.org/1999/xlink">skyline</i> xmlns:xlink="http://www.w3.org/1999/xlink">query</i> , and...

Due to the existence of uncertain data in a wide spectrum real applications, query processing has become increasingly important, which dramatically differs from handling certain traditional database. In this paper, we formulate and tackle an important query, namely probabilistic top-k dominating (PTD) particular, PTD retrieves k objects that are expected dynamically dominate largest number objects. We propose effective pruning approach reduce search space, present efficient procedure answer...

A challenging task in the natural language question answering (Q/A for short) over RDF knowledge graph is how to bridge gap between unstructured questions (NLQ) and graph-structured data (GOne of effective tools "template", which often used many existing Q/A systems. However, few them study generate templates automatically. To best our knowledge, we are first propose a join approach template generation. Given workload D SPARQL queries set N questions, goal find some pairs q, n, q∈ ∧ n ∈, N,...

An efficient self-assembled methanoproline–thiourea organocatalyst for the synthesis of optically active 6-isopropyl-3,4-dihydropyrimidines<italic>via</italic>an asymmetric Biginelli reaction was developed, which is superior to individual precatalyst.

Chronic hepatitis B virus (HBV) infection remains a major global public health problem. (CHB) patients can be divided into treatment indication and non-treatment individuals according to alanine transaminase (ALT), HBV DNA, serum e antigen status, disease status [liver cirrhosis, hepatocellular carcinoma (HCC), or liver failure], necroinflammation fibrosis, patients' age, family history of HCC cirrhosis. For example, normal ALT in 'immune-tolerant' phase with DNA higher than 107 2 × IU/mL,...

Skyline query is of great importance in many applications, such as multi-criteria decision making and business planning. In particular, a skyline point data object the database whose attribute vector not dominated by that any other objects. Previous methods to retrieve points usually assume static objects (i.e. their vectors are fixed), whereas several recent work focus on queries with dynamic attributes. this paper, we propose novel variant queries, namely metric skyline, attributes defined...