Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications最新文献

Session details: Leveraging Mobility 会议细节:利用移动性

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3257165

R. Kravets

引用次数: 0

Session details: New Ideas in Radio Sensing and Coverage 会议细节:无线电传感和覆盖的新思路

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3257161

G. Pau

引用次数: 0

I am a "Smart" watch, Smart Enough to Know the Accuracy of My Own Heart Rate Sensor 我是一只“智能”手表，智能到可以知道自己的心率传感器的准确性

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3032970.3032977

Ho-Kyeong Ra, Jungmo Ahn, Hee-Jung Yoon, D. Yoon, S. Son, Jeonggil Ko

{"title":"I am a \"Smart\" watch, Smart Enough to Know the Accuracy of My Own Heart Rate Sensor","authors":"Ho-Kyeong Ra, Jungmo Ahn, Hee-Jung Yoon, D. Yoon, S. Son, Jeonggil Ko","doi":"10.1145/3032970.3032977","DOIUrl":"https://doi.org/10.1145/3032970.3032977","url":null,"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 inaccuracies cannot be easily correlated, nor predicted, using accelerometer and gyroscope measurements. Rather, we point out that the light intensity readings at the photoplethysmography (PPG) sensor can be an effective indicator of heart rate accuracy. Using a Viterbi algorithm-based Hidden Markov Model, we show that it is possible to design a filter that allows smartwatches to self-classify measurement quality with ~ 98% accuracy. Given that such capabilities allow the smartwatch to internally filter misleading values from being application input, we foresee this as an essential step in catalyzing novel clinical-grade wearable applications.","PeriodicalId":309322,"journal":{"name":"Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132190812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Session details: Towards Happier Mobile Users 会议细节:走向更快乐的手机用户

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3257162

R. Likamwa

引用次数: 0

Separated By Birth: Hidden Differences Between Seemingly-Identical Smartphone CPUs 出生分离:看似相同的智能手机cpu之间的隐藏差异

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3032970.3032982

Guru Prasad Srinivasa, R. Begum, Scott Haseley, Mark Hempstead, Geoffrey Challen

{"title":"Separated By Birth: Hidden Differences Between Seemingly-Identical Smartphone CPUs","authors":"Guru Prasad Srinivasa, R. Begum, Scott Haseley, Mark Hempstead, Geoffrey Challen","doi":"10.1145/3032970.3032982","DOIUrl":"https://doi.org/10.1145/3032970.3032982","url":null,"abstract":"Smartphone consumers, app developers, and even mobile systems researchers operate under the assumption that performance differences between identical smartphones should be small. Consumers pick a model to purchase and don't consider that the specific device they leave the store with may vary quite dramatically from the identical models it sat next to on the shelf. App rating systems typically collect the model from reviewers, but not more detailed information-again, assuming that all instances of a particular model perform similarly. Even mobile systems researchers will conduct studies using small numbers of devices that fail to account or control for inherent differences between identical phones. Unfortunately seemingly-identical smartphones can in fact have very different performance characteristics. Note that we are not referring to differences in battery or Flash performance caused over time by wear. Inherent differences would separate two brand-new phones still in the original packaging. Our experiments show up to 20% performance and energy consumption differences between otherwise identical devices. These differences result from process variation in the manufacture of smartphone CPUs, which causes some CPUs to perform much more poorly than others. This paper explains the causes of this variation, measures its impacts, and discusses implications for smartphone researchers, software developers, and consumers.","PeriodicalId":309322,"journal":{"name":"Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130780163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Empath-D: Empathetic Design for Accessibility 同理心d:可访问性的同理心设计

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3032970.3032981

K. T. W. Choo, R. Balan, Tan Kiat Wee, Jagmohan Chauhan, Archan Misra, Youngki Lee

引用次数: 5

Noncoherent mmWave Path Tracking 非相干毫米波路径跟踪

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3032970.3032974

M. Rasekh, Zhinus Marzi, Yanzi Zhu, Upamanyu Madhow, Haitao Zheng

引用次数: 95

Automated Lamp-Type Identification for City-Wide Outdoor Lighting Infrastructures 城市户外照明基础设施的自动灯型识别

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3032970.3032980

Shengrong Yin, Talmai Oliveira, A. Murthy

{"title":"Automated Lamp-Type Identification for City-Wide Outdoor Lighting Infrastructures","authors":"Shengrong Yin, Talmai Oliveira, A. Murthy","doi":"10.1145/3032970.3032980","DOIUrl":"https://doi.org/10.1145/3032970.3032980","url":null,"abstract":"As cities ramp up the efforts to convert their aging lighting infrastructure to connected and energy-efficient Light-Emitting Diodes (LEDs), they are confounded by the lack of reliable information about their existing outdoor lighting bases. In this paper, we propose a vehicle-mounted spectrom etry-based approach to scalably audit the roadway lamp types by driving across the city, thereby quickly and efficiently providing the basis for planning and executing LED conversion projects. LambdaSeek, a mobile sensing system that can be mounted on a vehicle, is developed to reliably capture the Spectral Power Distributions (SPDs) of the light emitted by the luminaires on the light poles by driving around the city. The on-board illuminance sensor and the global positioning system receiver helps to localize the SPDs, which are then classified into the corresponding lamp types using a k-Nearest Neighbor classification algorithm. Validation experiments across four field trials are presented: the most commonly found High-Pressure Sodium, Mercury Vapor, Metal Halide and LED lamps were classified correctly with a recall rate of more than 95%.","PeriodicalId":309322,"journal":{"name":"Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125848829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Freeze It If You Can: Challenges and Future Directions in Benchmarking Smartphone Performance 如果你可以，就冻结它:智能手机性能基准的挑战和未来方向

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3032970.3032979

Yao Guo, Yunnan Xu, Xiangqun Chen

引用次数: 6

Session details: Fresh Insights and Directions for Mobile Performance Testing 会议细节:移动性能测试的新见解和方向

Proceedings of the 18th International Workshop on Mobile Computing Systems and Applications Pub Date : 2017-02-21 DOI: 10.1145/3257167

A. A. Sani

引用次数: 0