Our capstone project is a “Next Generation Financial Guidance Tool,” an interactive website that exploits the concept of gamification to target Gen Y customers. We aim to provide millennial customers with a great user experience and high-quality financial guidance while at the same time helping our industry sponsor, Fidelity Investments, establish a strong connection to these customers. In this website users can learn to make wiser investments by setting their own financial goals and choosing different portfolios to realize them. They can get the latest financial news and—more importantly—share their experience of the website with friends through social media such as Facebook and Twitter.

关键词：金融向导；网站设计；交互游戏；投资组合建模

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This paper demonstrates, with a prototype, one such use case where an indoor positioning system can be made more useful by rendering relevant 3D graphics on the mobile display. It also describes our application development process, right from target user interviews to an interactive high-fidelity prototype development in Android. Localization is achieved by creating a location API simulator and using the orientation sensors in the phone/tablet. Relevant graphical information, determined based on the user’s context and selection, is rendered using OpenGL on top of the live camera stream. User studies indicated that overlaying points of interest on the camera view significantly enhanced the user experience in indoor navigation.

关键词：增强现实；室内导航；室内定位系统；用户体验；原型开发

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In this thesis, we propose a novel method for estimating various collision type probabilities locally at a given node of an 802.11 network. The key to our approach is a signal we call the busy-idle (BI) signal, which is a binary-valued record of the channel occupancy over time as observed locally by a given node. We show that if the access point(AP) periodically broadcasts its BI signal to associated nodes at an overhead of less than 2%, the nodes can use this information in conjunction with locally observable quantities to obtain partial spatial information about the network traffic. With this spatial information, nodes can estimate their probabilities of various types of loss and make adaptations to improve throughput and/or network utility.

关键词：无线局域网；冲突检测；信道占用；网络通信量

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In this thesis, we consider the fundamental questions that arise when trading between multiple such criteria--computation, communication, privacy--while maintaining statistical performance. Can we develop lower bounds that show there must be tradeoffs? Can we develop new procedures that are both theoretically optimal and practically useful? To answer these questions, we explore examples from optimization, confidentiality preserving statistical inference, and distributed estimation under communication constraints. Viewing our examples through a general lens of constrained minimax theory, we prove fundamental lower bounds on the statistical performance of any algorithm subject to the constraints--computational, confidentiality, or communication--specified. These lower bounds allow us to guarantee the optimality of the new algorithms we develop addressing the additional criteria we consider, and additionally, we show some of the practical benefits that a focus on multiple optimality criteria brings.

关键词：统计学习；机器学习；凸优化；自适应；梯度

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We introduce ACES--Automated Coding Evaluation of Style--a module that automates grading for the composition of Python programs. ACES, given certain constraints, assesses the composition of a program through static analysis, conversion from code to an Abstract Syntax Tree, and clustering (unsupervised learning), helping streamline the subjective process of grading based on style and identifying common mistakes. Further, we create visual representations of the clusters to allow readers and students understand where a submission falls, and what are the overall trends.

关键词：编码风格；Python；静态分析；自动评估

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In order to study the benefits of metacognition with OCTAL, we authored a concept map and question set for topics from UC Berkeley's CS10: The Beauty and Joy of Computing. We presented the tool to the students of the course between their first and second midterm exams during the spring of 2014. In the study, we found no statistically significant changes in metacognition among participants who used the tool. However, analysis of participant usage of the tool reveals differences in the way learners approach concepts presented to them in a list versus in a graph. In particular, while users often followed a list of concepts in-order, learners that navigated a graph explored concepts in clusters.

关键词：自适应；在线课堂；元认知；集群；开发

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One possible solution to lower latency is to increase the Maximum Segment Size (MSS), which would allow transmitting as much information using fewer packets. However, this impairs efficient packet multiplexing by routers. Another approach to reduce latency is to increase TCP’s initial window size, which also allows sending more data at once. However, the benefits of this for short flows can be wiped out if the flow experiences even a single packet drop as this will cause retransmissions and in some cases timeouts. In this paper, we propose the concept of super-packets to deal with this all-or-nothing property of flows. Super-packets are a collection of packets whose collective performance is critical for applications. End-hosts explicitly request reservation of buffer space for super-packets in routers who in turn look at their buffer utilization and guarantee forwarding of all packets in the given super-packet. This paper proposes a simple and efficient algorithm for such reservations in routers.

关键词：TCP协议；端口扫描；TCP性能；路由器；延时

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以麦草氧脱木素（O）浆为研究对象,考察了草酸酸洗（AC）对该浆料中铁离子去除率及后续过氧化氢（P）漂白的促进作用。结果表明,当pH值约为3、浆浓4%时,较优的草酸酸洗温度和处理时间分别为60℃和60 min,此时Fe3+的去除率约为40%。这主要是由于草酸除可提供酸性环境外,还可络合Fe3+,降低Fe3+在浆料纤维上的吸附量,改变Fe（OH）3的溶解平衡,在相同氢离子浓度时达到提高Fe3+去除率的目的。浆料卡伯值和黏度相同时,与经OQP和OAS（硫酸酸洗）QP漂后的浆料白度（分别为56.4%和64.5%）相比,经OACQP漂白后浆料白度可达73%,分别提高了30%和13%。

关键词：草酸酸洗；麦草；氧脱木素浆料

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To reduce the power consumption of bio-sensors which will be potentially implanted into human body, compressed sensing is introduced by taking advantage of the sparsity of bio-signals. Using 32nm CMOS technology, the prototype is able to achieve 10-bit resolution under power consumption of 320 nW. The clock frequency is 20 kHz. The circuit described below is designed to compress bio-signal in time domain.

关键词：生物传感器；压缩传感；DSP；芯片

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A great number of people in India lack access to good health care. I worked on two connected projects which each attempt to address this problem. The former project, called the Indian Health Kiosk project, involved building health "kiosks" in India which sought to provide low-cost health care to people in rural India. This project was terminated after six months due to unforeseen circumstances, leaving my team to create a new project.Our second project attempted to systematically evaluate the effectiveness of projects which attempt to provide health care in India. For this project, called Health Solutions Assessment, we designed a simulation of India which can be used to model health care solutions. The simulation generates a population representing India, applies the effects of a solution to that population, and analyzes the results. It can be tuned and evaluated in its own right using data about previous healthcare solutions to predict the impact of new healthcare solutions. This analysis can be used to identify whether proposed solutions are worth investing in, and this information can be shared publicly to provide a platform for potential investors to learn about and discuss various proposed solutions.

关键词：卫生保健；有效性评估；解决方案

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