Strength, water absorption and thermal comfort of mortar bricks containing crushed ceramic waste

This present study investigated the crushed ceramic waste utilisation as sand replacement in solid mortar bricks. The percentage of crushed ceramic waste used were 0% (CW0), 10% (CW10), 20% (CW20) and 30% (CW30) from the total weight of sand. The dimension prescribed of mortar bricks are 215 mm x 102.5 mm x 65 mm as followed accordance to MS 2281:2010 and BS EN 771-1:2011+A1:2015. Four (4) tests were conducted on mortar bricks namely crushing strength, water absorption, compressive strength of masonry units and thermal comfort. The incorporation of ceramic waste in all designated mortar bricks showed the increment of crushing strength between 23% and 46% at 28 days of curing and decrement water absorption between 34% and 44% was recorded corresponding to control mortar bricks. The prism test of masonry units consists of mortar bricks containing ceramic waste indicated the high increment of compressive strength at about 200% as compared to mortar brick without ceramic waste. The thermal comfort test of ceramic mortar bricks were also showed the good insulation with low interior temperature. Therefore, the ceramic waste can be utilised as a material replacement to fine aggregate in mortar brick productions due to significant outcomes performed

A RFID-based Personal Navigation System for Multi-Story Indoor Environments

[[abstract]]In this research, an active RFID-based personal navigation system for multi-story indoor environments is proposed. Without using complicated three-dimensional positioning algorithms, we employ an existing two-dimensional positioning engine and equip the system with the capability of seamless positioning handoffs between different floors. The handoff process is triggered by monitoring the received signal strength indicator (RSSI) value observed by the RFID reader deployed in the stairway. The usefulness of the proposed system is verified by conducting an experiment in a campus building. What distinguishes our work from other related works is that we focus on the capability of seamless positioning handoffs between floors, whereas none in the literature mentioned this feature, which we regard as a key to improve user experiences.[[conferencetype]]國際[[conferencedate]]20111026~20111028[[booktype]]紙本[[iscallforpapers]]Y[[conferencelocation]]Barcelona, Spai

An End-to-End Logistics Management Application over Heterogeneous Location Systems

100學年度研究獎補助論文[[abstract]]RFID and GPS are the two technologies that receive significant attention in the field of indoor and outdoor location systems, respectively. In this research, the need of integrating multiple heterogeneous location systems is identified. We propose a hybrid system that combines both RFID and GPS technologies to achieve the goal of true end-to-end logistics management, by end-to-end we mean the journey of goods delivery may traverse across both indoor and outdoor regions. With our system, not only a manager can dispatch tasks for the deliverymen, but also the real-time location of a deliveryman can be tracked both indoors and outdoors. More importantly, the deliveryman with a mobile terminal can experience seamless positioning handover between outdoor and indoor environments. The usefulness of this logistics management application is verified through an experiment conducted in the campus environment. To the best of our knowledge, this is the first work that implements RFID and GPS positioning handover in the application of end-to-end logistics management.[[incitationindex]]SCI[[incitationindex]]EI[[booktype]]紙

An End-to-End Logistics Management Application over Heterogeneous Location Systems

[[conferencetype]]國際[[conferencedate]]20091215~20091215[[booktype]]紙本[[iscallforpapers]]Y[[conferencelocation]]Taipei, Taiwa