1,734 research outputs found
Performance analysis with wireless power transfer constraint policies in full-duplex relaying networks
In practice, full-duplex (FD) transmission mode not only helps extend the coverage but also lengthen network lifetime. In this paper, we develop wireless power supply policies, namely separated power (SP) and harvested power (HP) to propose a flexible architecture at the relay node in FD decode-and-forward (DF) relaying networks considering time switching-based relaying protocol (TSR) to achieve optimal time used for a communication process. This transmission mode requires more processing procedure at the relay, i.e. antenna installations and radio frequency (RF) self-interference cancellation. We evaluate the optimal power constraints in case of SP and HP to achieve better power consumption efficiency at the relay node. More importantly, closed-form expressions for outage probability and throughput are provided, and we also use numerical and simulation results to compare SP with HP.Web of Science234767
Constructing a Knowledge Graph for Vietnamese Legal Cases with Heterogeneous Graphs
This paper presents a knowledge graph construction method for legal case
documents and related laws, aiming to organize legal information efficiently
and enhance various downstream tasks. Our approach consists of three main
steps: data crawling, information extraction, and knowledge graph deployment.
First, the data crawler collects a large corpus of legal case documents and
related laws from various sources, providing a rich database for further
processing. Next, the information extraction step employs natural language
processing techniques to extract entities such as courts, cases, domains, and
laws, as well as their relationships from the unstructured text. Finally, the
knowledge graph is deployed, connecting these entities based on their extracted
relationships, creating a heterogeneous graph that effectively represents legal
information and caters to users such as lawyers, judges, and scholars. The
established baseline model leverages unsupervised learning methods, and by
incorporating the knowledge graph, it demonstrates the ability to identify
relevant laws for a given legal case. This approach opens up opportunities for
various applications in the legal domain, such as legal case analysis, legal
recommendation, and decision support.Comment: ISAILD@KSE 202
The emerging business of science in Vietnam
Manh-Tung Ho, Khanh-Linh Hoang, Minh-Hoang Nguyen, Manh-Toan Ho (2019). Chapter 8. The emerging business of science in Vietnam. In Quan-Hoang Vuong, Trung Tran (Eds.), The Vietnamese Social Sciences at a Fork in the Road (pp. 163–177). Warsaw, Poland: De Gruyter. DOI:10.2478/9783110686081-013.
Online ISBN: 9783110686081
© 2019 Sciendo / De Gruyte
Real-time Optimal Resource Allocation for Embedded UAV Communication Systems
We consider device-to-device (D2D) wireless information and power transfer
systems using an unmanned aerial vehicle (UAV) as a relay-assisted node. As the
energy capacity and flight time of UAVs is limited, a significant issue in
deploying UAV is to manage energy consumption in real-time application, which
is proportional to the UAV transmit power. To tackle this important issue, we
develop a real-time resource allocation algorithm for maximizing the energy
efficiency by jointly optimizing the energy-harvesting time and power control
for the considered (D2D) communication embedded with UAV. We demonstrate the
effectiveness of the proposed algorithms as running time for solving them can
be conducted in milliseconds.Comment: 11 pages, 5 figures, 1 table. This paper is accepted for publication
on IEEE Wireless Communications Letter
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