A Factoid Question Answering System for Vietnamese

In this paper, we describe the development of an end-to-end factoid question answering system for the Vietnamese language. This system combines both statistical models and ontology-based methods in a chain of processing modules to provide high-quality mappings from natural language text to entities. We present the challenges in the development of such an intelligent user interface for an isolating language like Vietnamese and show that techniques developed for inflectional languages cannot be applied "as is". Our question answering system can answer a wide range of general knowledge questions with promising accuracy on a test set.Comment: In the proceedings of the HQA'18 workshop, The Web Conference Companion, Lyon, Franc

Signal Integrity Optimization of RF/Microwave Transmission Lines in Multilayer PCBs

While allowing for flexible trace routing and device miniaturization, multilayer printed circuit boards (PCB) suffer from performance issues at high frequency due to the impedance mismatch caused by vertical transitions. In this paper, a process for optimizing the high-speed performance of microstrip to stripline transitions in multilayer PCBs is demonstrated. This includes strategic tuning of via dimensions using time-domain reflectometry and an analysis of the use of shielding vias to prevent parasitic cavity resonance. Simulations of optimized 2-layer, 4-layer, and 6-layer microstrip to stripline transitions show a return loss of 20 dB up to 7 GHz. To demonstrate a useful microwave application, a planar filter with a passband of 4 GHz to 6 GHz is submerged 6-layers. The simulation shows that when paired with the optimized vertical transitions, the filter can maintain performance

Psychometric Properties of a Social Skills Assessment Using Virtual Environment

Background: Social Anxiety Disorder (SAD) is a marked and persistent fear of social and/or performance situations in which embarrassment or scrutiny from others may occur. In children, this marked and persistent fear must be present in peer settings and is not exclusive to interactions with adults (American Psychiatric Association [APA], 2013). Behaviorally, children with SAD may avoid eye contact and exhibit other behavioral symptoms such as stooped shoulders, nail biting, trembling voice, avoidance of social and performance situations, muffled voice, longer speech latency, inappropriate tone or low voice volume, and lack of spontaneous speech (Beidel & Turner, 2007; Ollendick, Benoit, & Grills-Taquechel, 2014; Spence, Donovan, & Brechman-Toussaint, 1999). Currently, there are several methods of assessing symptom severity of SAD, such as structured and semi-structured interviews supplemented by self- and parent-report forms, as well as behavioral assessment of social skills, such as RPTs. However, RPTs inherently present with feasibility concerns as there are several obstacles for its implementation. Thus, the current study will examine the psychometric properties of a VE based social skills assessment as it compares to the traditional RPT. Methods: Participants were 46 children, ages 7 to 14, who underwent two assessment conditions: RPT and VE BAT. Participants were assessed prior to the assessment conditions using the ADIS-C/P and completed several self- and parent-report forms. Participants reported self-ratings of anxiety and acceptability, while blinded observers rated social skills and overall social anxiety. Results: A paired-samples t-test revealed (a) no significant difference in acceptability between the two tasks (t(36) = .209, p \u3e .05); (b) the VE BAT elicited somewhat less anxiety and somewhat more skilled social behavior than a comparable and traditional RPT; (c) the VE BAT demonstrated moderate concurrent validity with the SPAI-C (r = .422, p = .004); (d) behaviors were rated as consistent across assessment tasks for speech latency ( r = .367, p = .016), overall effectiveness ( r = .541, p = .000), overall social anxiety (r = .638, p = .000), and SAM ratings (r = .730, p = .000) and; (e) VE BAT was more feasible to implement than the RPT in terms of personnel time (t(45) = 12.87, p = .00, d = 2.69) and costs (t(45) = 12.88, p = .00, d = 1.83). Conclusion: The current study addresses many of the discussed limitations of conducting RPTs and, overall, supports the utilization of VE BATS as a viable alternative to behaviorally assessing social skills in children. Overall, the current study demonstrates acceptability, validity, and feasibility of implementing such a novel method, where a formal RPT is not possible. Further implications for the current study include that VEs have potential in the armamentarium for social skills training with children with SAD

Short Introduction of Contract Law in Vietnam

Contract law is a vital aspect of all jurisdictions. It covers all everyday activities of the social-economic society of all countries, including developed and developing ones. Developed countries, based on strong economic foundations, still perfect the contract law to meet the needs of new situations. For developing countries, if they want to integrate into the International economy, they must continuously improve their laws, and contract law is one of the most important norms. Vietnam, a developing country undergoing the integration, must follow the general regulation which is perfecting its contract law. This short article focuses on the brief history and introduces basic contents of Vietnamese contract la