Endothermy in vertebrates has been postulated to confer physiological and ecological advantages. In endothermic fish, niche expansion into cooler waters is correlated with specific physiological traits and is hypothesized to lead to greater foraging success and increased fitness. Using the seasonal co-occurrence of three tuna species in the eastern Pacific Ocean as a model system, we used cardi...

Blockchain technology is well known due to the advent of Bitcoin. With development recent years, blockchain has been widely used in medicine, digital currency, energy, etc. The practical Byzantine fault-tolerant (PBFT) algorithm a consensus consortium blockchains. Aiming address problems PBFT algorithm, low efficiency high communication complexity, and malicious behavior primary node leading fa...

Compound specific isotopic analysis (CSIA) of amino acids has received increasing attention in ecological studies in recent years due to its ability to evaluate trophic positions and elucidate baseline nutrient sources. However, the incorporation rates of individual amino acids into protein and specific trophic discrimination factors (TDFs) are largely unknown, limiting the application of CSIA ...

Supervision of Livelihood Issues (SLI) refers to the supervision and participation general public in government actions affairs, with a particular focus on issues closely related people’s lives. However, current regulatory systems often suffers from information imbalances, low authenticity, credibility. To address these challenges, this study proposes blockchain-based SLI framework that leverag...

Blockchain-based audit systems suffer from low scalability and high message complexity. The root cause of these shortcomings is the use “Practical Byzantine Fault Tolerance” (PBFT) consensus protocol in those systems. Alternatives to PBFT have not been used blockchain-based due limited knowledge about their functional operational requirements. Currently, no blockchain testbed supports execution...

This paper presents new protocols for Byzantine state machine replication and Byzantine agreement in the synchronous and authenticated setting. The PBFT state machine replication protocol tolerates f Byzantine faults in an asynchronous setting using n = 3f + 1 replicas. We improve the Byzantine fault tolerance to n = 2f + 1 by utilizing the synchrony assumption. Our protocol also solves synchro...

The traditional PBFT consensus algorithm has several limitations in the consortium blockchain environment, such as unclear selection of primary node, excessive communication times, etc. To solve these limitations, an improved VS-PBFT based on vague sets was proposed. three phases: node partition, selection, and global consensus. Firstly, nodes whole network are partitioned using consistent hash...

The practical Byzantine Fault Tolerance (PBFT) is a classical consensus algorithm that has been widely applied in an alliance blockchain system to make all nodes agree certain transactions under the assumption proportion of no more than 1/3. It prevalent due its performance, simplicity, and claimed correctness. However, any vulnerability can lead significant loss finance because one change tran...

The paper attempts to handle failures effectively, while reaching agreement, in a distributed transaction processing system. The standard protocols such as BFTDC [3], Zyzzyva [4] and PBFT [5] handle the problem to a greater extent. However, the limitation with these protocols is that they incur increased message overhead as well as large latency. Moreover, the nodes are evacuated from the trans...