On-the-fly Table Generation

Many information needs revolve around entities, which would be better answered by summarizing results in a tabular format, rather than presenting them as a ranked list. Unlike previous work, which is limited to retrieving existing tables, we aim to answer queries by automatically compiling a table in response to a query. We introduce and address the task of on-the-fly table generation: given a query, generate a relational table that contains relevant entities (as rows) along with their key properties (as columns). This problem is decomposed into three specific subtasks: (i) core column entity ranking, (ii) schema determination, and (iii) value lookup. We employ a feature-based approach for entity ranking and schema determination, combining deep semantic features with task-specific signals. We further show that these two subtasks are not independent of each other and can assist each other in an iterative manner. For value lookup, we combine information from existing tables and a knowledge base. Using two sets of entity-oriented queries, we evaluate our approach both on the component level and on the end-to-end table generation task.Comment: The 41st International ACM SIGIR Conference on Research and Development in Information Retrieva

Time-Optimal Nonlinear Feedback Control for the NPSAT1 Spacecraft, IEEE-ASME (2005; Monterey, California)

The article of record as published may be located at http://ieeexplore.ieee.orgProceedings of the 2005 IEEE/ASME International Conference on Advanced Intelligent Mechatronics ; Monterey, California, USA, 24-28 July, 2005NPSAT1 is a small satellite being built at the Naval Postgraduate School, and due to launch in January 2006. It uses magnetic actuators and a pitch momentum wheel for attitude control. In this paper, a novel time-optimal sampled-data feedback control algorithm is introduced for closed-loop control of NPSAT1 in the presence of disturbances. The feedback law is not analytically explicit; rather, it is obtained by a rapid re-computation of the open-loop time-optimal control at each update instant. The implementation of the proposed controller is based on a shrinking horizon approach and does not require any advance knowledge of the computation time. The ground- test simulations show that the proposed control scheme performs well in the presence of parameter uncertainties and external disturbance torques.NAApproved for public release; distribution is unlimited

Comparison of closure of subcutaneous tissue versus non-closure in relation to wound infection and disruption after cesarean section delivery in obese patients.

چکیده: زمینه و هدف: باز شدگی زخم یکی از عوارض مهم بعد از سزارین است و چاقی یکی از ریسک فاکتورهای عفونت زخم به همراه سایر عوارض می باشد. این مطالعه با هدف مقایسه اثر دوختن یا ندوختن بافت زیر جلد در ایجاد عفونت و باز شدگی زخم بعد از عمل سزارین در افراد چاق انجام شده است. روش بررسی: در یک مطالعه کارآزمایی بالینی در شهرستان یزد 100 نفر از زنان چاقی (که بافت زیر جلد آنها حداقل cm2 بود) و با روش سزارین زایمان می کردند به دو گروه 50 نفری تقسیم شدند، در گروه مورد بعد از دوختن فاشیای شکم بافت زیر جلد با نخ ویکریل 2/0 سوچور شد و گروه شاهد بعد از دوختن فاشیا، زیر جلد را باز گذاشته و جلد ترمیم شد. بیماران هر دو گروه از نظر ترشحات عفونت و باز شدگی زخم بررسی شدند. نتایج مطالعه با تست های آماری t-student و کای دو بررسی شد. یافته ها: هر دو گروه از نظر سن، تعداد زایمان، نوع بیهوشی و نوع انسزیون یکسان بودند. عفونت چرکی (کشت مثبت) در 2 نفر ازگروه مورد و 5 نفر از گروه شاهد مشاهده شد (05/0

A Pseudospectral Optimal Motion Planner for Autonomous Unmanned Vehicles

2010 American Control Conference, Marriott Waterfront, Baltimore, MD, USA, June 30-July 02, 2010This paper presents a pseudospectral (PS) optimal control algorithm for the autonomous motion planning of a fleet of unmanned ground vehicles (UGVs). The UGVs must traverse an obstacle-cluttered environment while maintaining robustness against possible collisions. The generality of the algorithm comes from a binary logic that modifies the cost function for various motion planning modes. Typical scenarios including path following and multi-vehicle pursuit are demonstrated. The proposed framework enables the availability of real-time information to be exploited by real-time reformulation of the optimal control problem combined with real-time computation. This allows the each vehicle to accommodate potential changes in the mission/environment and uncertain conditions. Experimental results are presented to substantiate the utility of the approach on a typical planning scenario

Usporedba poslijeoperacijskog analgezijskog učinka potkožne primjene tramadola i bupivakaina u bolesnica podvrgnutih carskom rezu

Cesarean section is associated with significant postoperative pain. The aim of this study was to evaluate the effects of tramadol versus bupivacaine administration at wound closure on postoperative pain relief in patients undergoing cesarean section. Sixty women undergoing cesarean deliveries were randomly assigned to receive either 10 mL of bupivacaine 0.5% (n=30) or 50 mg of tramadol in 10 mL of normal saline (n=30), both as local wound infiltration prior to skin closure at the end of operation. Postoperative pain was evaluated with a visual analogue scale (VAS: 0-10) at 1, 2 and 6 hours after operation. Time to first analgesic administration and analgesic consumption in 24 hours after operation were recorded and compared between the two groups. Dana were analyzed by SPSS software version 15 and p0.05; Fisher exact test). No side effects were reported in either group. This study showed that subcutaneous administration of tramadol provided analgesic effect equal to bupivacaine with longer pain relief after cesarean section.Carski rez je udružen sa značajnom poslijeoperacijskom boli. Cilj ove studije bio je procijeniti učinak primjene tramadola u usporedbi s bupivakainom pri zatvaranju rane na olakšanje poslijeoperacijske boli u bolesnica podvrgnutih carskom rezu. Po 30 od ukupno 60 žena podvrgnutih carskom rezu i uključenih u studiju nasumce je primilo 10 mL bupivakaina 0,5% ili 50 mg tramadola u normalnoj fiziološkoj otopini ukapljeno u operacijsku ranu prije zatvaranja rane na kraju zahvata. Poslijeoperacijska bol procjenjivala se pomoću vizualne analogne ljestvice (VAS: 0-10) 1, 2 i 6 sati nakon operacije. U obje skupine bilježilo se i usporedilo vrijeme do prvog davanja analgetika i potrošnja analgetika kroz 24 sata od operacije. Podaci su analizirani pomoću programa SPSS ver. 15, a razina statističke značajnosti utvrđena je kao P0.05; Fisherov egzaktni test). Ni u jednoj skupini nisu zabilježene nikakve nuspojave. Ova studija je pokazala da potkožna primjena tramadola ima jednak analgezijski učinak kao bupivakain, ali s dužim olakšanjem boli nakon carskog reza

"Localization Space" : a framework for localization and planning, for systems using a Sensor/Landmarks module

One of the common ways of localization in robotics is the triangulation using a system composed of a sensor and some landmarks (which can be artificial or natural). This paper presents a framework, namely the Localization Space, in order to deal with problems such as the landmark placement and motion planning including the localization constraint. Based on this framework, we present general approaches to the optimal distribution of the landmarks or to the computation of reliable trajectories. The case of a mobile robot equipped with an orientable sensor (such as a pan vision system) is the recurrent example of the paper, meant to illustrate the formal concepts and to also show the practical relevance of the proposed tools