Categories

Mobile — 65
NSL — 19
NSL Project — 2

No Need to Stop What You’re Doing: Exploring No-Handed Smartwatch Interaction

by Jinyoung Choi on 2017-06-23 19:23:54

Date : 2017.06.26(Mon) 04:00 P.M. Locate : EB5. 533 Presenter : Jinyoung Choi Title : No Need to Stop What You’re Doing: Exploring No-Handed Smartwatch Interaction Author : Seongkook Heo, Michelle Annett, Ben Lafreniere, Tovi Grossman, George Fitzmaurice Abstract Smartwatches have the potential to enable quick micro-interactions throughout daily life. However, because they require both hands to operate, their full potential is constrained, particularly in situations where the user is actively performing a task with their hands. We investigate the space of no-handed interaction with smartwatches in scenarios where one or both hands are not free. Specifically, we present a taxonomy of scenarios in which standard touchscreen interaction with smartwatches is not possible, and discuss the key constraints that limit such interaction. We then implement a set of interaction techniques and evaluate them via two user studies: one where participants viewed video ... Continue reading →

79 Views

Performance Analysis of IEEE 802.15.4 Non-beacon Mode with the Unslotted CSMA/CA

by Sungyup Lee on 2017-05-15 11:23:24

Date : 2017.05.15(Mon) 04:00 P.M. Locate : EB5. 533 Presenter : Sungyup Lee Title : Performance Analysis of IEEE 802.15.4 Non-beacon Mode with the Unslotted CSMA/CA Author : Tae Ok Kim, Jin Soo Park, Hak Jin Chong, Kyung Jae Kim, Bong Dae Choi, Member of IEEE Abstract We provide a simple mathematical model of IEEE 802.15.4 unslotted CSMA/CA by busy cycle of M/G/1 queueing system to obtain several performance measures. Our performance measures can be used for determining the optimal number of devices while supporting the required QoS constraints on the average packet delay and the packet loss probability, and also for calculating battery lifetime. Proceeding : IEEE COMMUNICATIONS LETTERS, VOL. 12, NO.4, APRIL 2008 Continue reading →

148 Views

Adaptive Optimization for OpenCL Programs on Embedded Heterogeneous Systems

by Ikhee Shin on 2017-05-08 09:07:26

Date : 2017.05.08(Mon) 04:00 P.M. Locate : EB5. 533 Presenter : Ikhee Shin Title : Adaptive Optimization for OpenCL Programs on Embedded Heterogeneous Systems Author : Ben Taylor, Vicent Sanz Marco, Zheng Wang  Abstract Heterogeneous multi-core architectures consisting of CPUs and GPUs are commonplace in today’s embedded systems. These architectures offer potential for energy efficient computing if the application task is mapped to the right core. Realizing such potential is challenging due to the complex and evolving natural of hardware and applications. This paper presents an automatic approach to map OpenCL kernels onto heterogeneous multi-cores for a given optimization criterion – whether it is faster runtime, lower energy consumption or a trade-off between them. This is achieved by developing a machine learning based approach to predict which processor to use to run the OpenCL kernel and the host program, and at what frequency ... Continue reading →

208 Views

Predicting Sensory Data and Extending Battery Life for Wearable Devices

by Seula Hwang on 2017-04-28 14:38:15

Date : 2017.05.01(Mon) 04:00 P.M. Locate : EB5. 533 Presenter : Seula Hwang Title : Predicting Sensory Data and Extending Battery Life for Wearable Devices Author : Songchun Fan, Qiuyun Llull, Benjamin C. Lee Abstract Telepath is a framework that supports communication-free offloading for wearable devices. With offline training, activity recognition tasks can be offloaded from the wearable to the user's phone, without transferring raw sensing data. The key observation is that when the user is carrying both devices, the sensing streams on the two devices are highly correlated. By exploiting the correlation, the phone can estimate the wearable's sensing data and emulate the watch. Our evaluations shows that with Telepath, the phone performs accurately on activity recognition tasks that are designed for smart watches, achieving on average 87% of the watch's accuracy while extending the watch's battery life by 2.1x. Proceeding ... Continue reading →

212 Views

Self-aware systems for the Internet-of-Things

by Sihyeong Park on 2017-04-04 21:01:11

Date : 2017. 04. 10 (Mon) 16:00 Locate : EB5. 533 Presenter : Sihyeong Park   Title : Self-aware systems for the Internet-of-Things Author :  Mischa Möstl,  Johannes Schlatow,  Rolf Ernst,  Henry Hoffmann,  Arif Merchant,  Alexander Shraer Institute of Computer and Network Engineering, TU Braunschweig, Germany Systems Group, University of Chicago Google, Inc. Abstract : The IoT will host a large number of co-existing cyber-physical applications. Continuous change, application interference, environment dynamics and uncertainty lead to complex effects which must be controlled to give performance and application guarantees. Application and platform self-configuration and self-awareness are one paradigm to approach this challenge. They can leverage context knowledge to control platform and application functions and their interaction. They could play a dominant role in large scale cyber-physical systems and ... Continue reading →

272 Views

U-Wear: Software-Defined Ultrasonic Networking for Wearable Devices

by Jinse Kwon on 2017-03-30 21:16:22

Date : 2017. 04. 03 (Mon) 16:00 Locate : EB5. 533 Presenter : Jinse Kwon   Title : U-Wear: Software-Defined Ultrasonic Networking for Wearable Devices Author : G. Enrico Santagati, Tommaso Melodia (Northeastern University, Boston, MA, U.S.A.)   Abstract : Wearable medical sensing devices with wireless capabilities have become the cornerstone of many revolutionary digital health applications that promise to predict and treat major diseases by acquiring and processing health information. Existing wireless wearable devices are connected through radio frequency (RF) electromagnetic wave carriers based on standards such as Bluetooth or WiFi. However, these solutions tend to almost-blindly scale down traditional wireless technologies to the body environment, with little or no attention to the peculiar characteristics of the human body and the severe privacy and security requirements of patients. We contend that this is not the only possible ... Continue reading →

267 Views

CaffePresso: An Optimized Library for Deep Learning on Embedded Accelerator-based platforms

by Do Trung Hai on 2017-03-24 12:46:16

Date: 2017. 03. 27(Mon) 04:00 P.M. Locate: EB5. 533 Presenter: Trunghai Do Title: CaffePresso: An Optimized Library for Deep Learning on Embedded Accelerator-based platforms Author: G. Hegde, Siddhartha, N. Ramasamy, N. Kapre Abstract: Off-the-shelf accelerator-based embedded platforms offer a competitive energy-efficient solution for lightweight deep learning computations over CPU-based systems. Low-complexity classifiers used in power-constrained and performance-limited scenarios are characterized by operations on small image maps with 2- 3 deep layers and few class labels. For these use cases, we consider a range of embedded systems with 5-20W power budgets such as the Xilinx ZC706 board (with MXP soft vector processor), NVIDIA Jetson TX1 (GPU), TI Keystone II (DSP) as well as the Adapteva Parallella board (custom multi-core with NoC). Deep Learning computations push the capabilities of these platforms to the limit through compute-intensive evaluations of multiple 2D convolution ... Continue reading →

229 Views

PrefMiner: mining user's preferences for intelligent mobile notification management

by Jemin Lee on 2017-03-14 11:31:06

Date: 2017. 03. 20(Mon) 04:00 P.M. Locate: EB5. 533 Presenter: Jemin Lee Title: PrefMiner: mining user's preferences for intelligent mobile notification management Author: A. Mehrotra, R. Hendley, and M. Musolesi   Abstract : Mobile notifications are increasingly used by a variety of applications to inform users about events, news or just to send alerts and reminders to them. However, many notifications are neither useful nor relevant to users' interests and, also for this reason, they are considered disruptive and potentially annoying. In this paper we present the design, implementation and evaluation of PrefMiner, a novel interruptibility management solution that learns users' preferences for receiving notifications based on automatic extraction of rules by mining their interaction with mobile phones. The goal is to build a system that is intelligible for users, i.e., not just a "black-box" solution. Rules are shown to users who might decide to accept or ... Continue reading →

198 Views

I am a "Smart" watch, Smart Enough to Know the Accuracy of My Own Heart Rate Sensor

by Jinyoung Choi on 2017-03-08 17:19:17

Date : 2017. 03. 13(Mon) 04:00 P.M. Locate : EB5. 533 Presenter : Jinyoung Choi Title : I am a "Smart" watch, Smart Enough to Know the Accuracy of My Own Heart Rate Sensor Author : Ho-Kyeong Ra, Jungmo Ahn, Hee Jung Yoon, Dukyong Yoon, Sang Hyuk Son, JeonGil Ko   Abstract : With the wide-distribution of smart wearables, it seems as though ubiquitous healthcare can finally permeate into our everyday lives, opening the possibility to realize clinical-grade applications. However, given that clinical applications require reliable sensing, there is a need to understand how accurate healthcare sensors on wearable devices (e.g., heart rate sensors) are. To answer this question, this work starts with a thorough investigation on the accuracy of widely used wearable devices' heart rate sensors. Specifically, we show that when actively moving, heart rate readings can diverge far from the ground truth, and also show that such ... Continue reading →

214 Views

Internet of Things: A Survey on Enabling Technologies, Protocols, and Applications

by Sungyup Lee on 2017-03-06 05:41:50

Date : 2017. 03. 06(Wed) 04:00 P.M. Locate : EB5. 533 Presenter : Sungyup Lee Title : Internet of Things: A Survey on Enabling Technologies, Protocols, and Applications Author : Ala Al-Fuqaha, Senior Member, IEEE, Mohsen Guizani, Fellow, IEEE, Mehdi Mohammadi, Student Member, IEEE, Mohammed Aledhari, Student Member, IEEE, and Moussa Ayyash, Senior Member, IEEE   Abstract : This paper provides an overview of the Internet of Things (IoT) with emphasis on enabling technologies, protocols, and application issues. The IoT is enabled by the latest developments in RFID, smart sensors, communication technologies, and Internet protocols. The basic premise is to have smart sensors collaboratedirectlywithouthumaninvolvementtodeliveranewclass of applications. The current revolution in Internet, mobile, and machine-to-machine (M2M) technologies can be seen as the first phaseoftheIoT.Inthecomingyears,theIoTisexpectedtobridge diverse technologies to ... Continue reading →

173 Views

Job and Graduation Story

by Wonjun Hwang on 2016-12-23 17:56:52

Date : 2016. 12. 26 (Mon) 10:00 A.M. Locate : EB5. 533 Presenter : Wonjun Hwang Title : Job and Graduation Story Download : https://drive.google.com/open?id=0B4UHhoillqlweHlwVXdJc1huU0E Continue reading →

285 Views

Protecting Privacy of BLE Device Users

by Ikhee Shin on 2016-12-16 16:04:01

Date : 2016.12.19(Mon) 10:00 A.M. Locate : EB5. 533 Presenter : Ikhee Shin Title : Protecting Privacy of BLE Device Users Author : Kassem Fawaz, Kyu-Han Kim, Kang G. Shin Abstract Bluetooth Low Energy (BLE) has emerged as an attractive technology to enable Internet of Things (IoTs) to interact with others in their vicinity. Our study of the behavior of more than 200 types of BLE-equipped devices has led to a surprising discovery: the BLE protocol, despite its privacy provisions, fails to address the most basic threat of all—hiding the device’s presence from curious adversaries. Revealing the device’s existence is the stepping stone toward more serious threats that include user profiling/fingerprinting, behavior tracking, inference of sensitive information, and exploitation of known vulnerabilities on the device. With thousands of manufacturers and developers around the world, it is very challenging, if not impossible, to envision the ... Continue reading →

303 Views

Idea: A System for Efficient Failure Management in Smart IoT Environments

by Seula Hwang on 2016-12-01 14:19:15

Date : 2016. 12. 05 (Mon) 10:00 A.M. 2016.12.12(Mon) 10:00 A.M. Locate : EB5. 533 Presenter : Seula Hwang Title : Idea: A System for Efficient Failure Management in Smart IoT Environments Author : Palanivel A. Kodeswaran, Ravi Kokku, Sayandeep Sen, Mudhakar Srivatsa Abstract IoT enabled smart environments are expected to proliferate significantly in the near future, particularly in the context of monitoring services for wellness living, patient healthcare and elderly care. Timely maintenance of failed sensors is of critical importance in such deployments to ensure minimal disruption to monitoring services. However, maintenance of large and geographically spread deployments can be a significant challenge. We present Idea that significantly increases the vtime-before-repair for a smart home deployment, thereby reducing the maintenance overhead. Specifically, our approach leverages the facts that (a) there is inherent sensor redundancy when combinations ... Continue reading →

345 Views

Simultaneous Localisation and Mapping (SLAM): Part I The Essential Algorithms

by Juyeob Kim on 2016-11-25 20:19:28

Date : 2016. 11. 28 (Mon) 10:00 A.M. Locate : EB5. 533 Presenter : Jooyeob Kim Title : Simultaneous Localisation and Mapping (SLAM): Part I The Essential Algorithms Author : Hugh Durrant-Whyte Abstract This tutorial provides an introduction to Simultaneous Localisation and Mapping (SLAM) and the extensive research on SLAM that has been undertaken over the past decade. SLAM is the process by which a mobile robot can build a map of an environment and at the same time use this map to compute it's own location. The past decade has seen rapid and exciting progress in solving the SLAM problem together with many compelling implementations of SLAM methods. Part I of this tutorial (this paper), describes the probabilistic form of the SLAM problem, essential solution methods and significant implementations. Part II of this tutorial will be concerned with recent advances incomputational methods and new formulations of the SLAM problem for large scale and complex ... Continue reading →

306 Views

Presentation Rehearsal for Graduation thesis

by Jinyoung Choi on 2016-11-07 08:30:33

Date : 2016. 11. 07 (Mon) 10:00 A.M. Locate : EB5. 533 Presenter : Jinyoung Choi   Title : 스마트폰의 상황정보와 스마트워치의 PPG 센서를 이용한 사용자 부정적 감성 예측 모델 Author : Jinyoung Choi   Continue reading →

393 Views