Jongmoon Park

DirectSpace: A Collaborative Framework for Supporting Group Workspaces over Wi-Fi Direct

Wi-Fi Direct is a new feature in the 4.0 version of the Android operating system, allowing devices to connect directly to each other via Wi-Fi without an intermediate access point. Based on the Wi-Fi Direct feature, in this paper, we present a collaborative framework named DirectSpace that supports various collaborative situations to resolve the problems of traditional application paradigm such as client-server model. For this, we design collaborative services to support various environments, and develop collaborative protocols for providing workspaces over Wi-Fi Direct. On the top of DirectSpace, we also present a collaborative application for utilizing the group workspaces.

JCOOLS: A toolkit for generating context-aware applications with JCAF and DROOLS

We present a toolkit named JCOOLS that effectively generates context-aware applications in a ubiquitous environment. With JCOOLS, developers can define contexts and actions as context rules according to the change of context information. Based on the predefined context rules and the underlying DROOLS inference engine, JCOOLS generates responding actions that would execute in the associated end-user applications. In addition, to facilitate the development and deployment of context-aware applications, JCOOLS generates abstract program codes based on the context information for JCAF.

SCondi: A Smart Context Distribution Framework Based on a Messaging Service for the Internet of Things

When developing IoT (Internet of Things) applications, context distribution is a key feature to support effective delivery of related contextual data obtained from things to all interested entities. With the advent of the IoT era, multiple billion devices can generate huge amounts of data that might be used in IoT applications. In this paper, we present a context distribution framework named SCondi utilizing the messaging service which supports MQTT—an OASIS standard IoT messaging protocol. SCondi provides the notion of context channel as a core feature to support efficient and reliable mechanism for distributing huge context information in the IoT environment. The context channel provides a pluggable filter mechanism that supports effective extraction, tailoring, authentication, and security of information.

LiQR: A QR Code-Based Smart Phone Application Supporting Digital Marketing

A Facebook Page is considered as an essential place for businesses to build connections with people. The page is often used for building up relations with Facebook users through a function called ‘Like’. In this paper, we propose a method supporting digital marketing based on Facebook pages and QR code, presenting a smart phone application developed using the proposed method. The developed application named LiQR provides a function transforming the information of a Facebook page into a corresponding QR code. When a user takes a picture of the printed QR codes with the smartphone camera, the application enables the user to support the Facebook page with the same effect as clicking the ‘Like’ button, providing functions useful for managing the information on the Facebook page.