LLukas22/scidocs huggingface dataset:
Applications of location-based services: a selected review

Journal of Location Based Services Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t744398445 Applications of location-based services: a selected review Jonathan Raper a; Georg Gartner b; Hassan Karimi c; Chris Rizos d a Information Science, Northampton Square, City University, London, UK b Department of Geoinformation and Cartography, Vienna University of Technology, Erzherzog-Johannplatz 1, Austria c University of Pittsburgh, PA, USA d School of Surverying 2 SIS, University of New South Wales, Sydney, Australia
6D Force and Acceleration Sensor Fusion for Compliant Manipulation Control

This paper focusses on sensor fusion in robotic manipulation: 6D force/torque signals and 6D acceleration signals are used to extract forces and torques caused by inertia. As result, only forces and torques established by environmental contact(s) remain. Beside an improvement of hybrid force/pose control behavior, an additional major benefit is that regular resetting/zeroing of force/torque sensors before free space/contact transitions can be omitted. All essential equations, transformations, and calculations that are required for this 6D fusion approach are derived. To highlight the meaning for practical implementations, numerous experiments with a six-joint Staeubli RX60 industrial manipulator are presented, and the achieved results are discussed
Carotid artery stent placement with distal balloon protection: technical considerations.

BACKGROUND AND PURPOSE
Most neurologic events that complicate the carotid artery stent placement procedure are embolic. Strategies are being developed and evaluated for their ability to minimize the clinical embolic risk. The purpose of this study was to determine the feasibility, safety, and technical considerations of performing carotid artery stent placement with use of a distal balloon antiembolization system.


METHODS
Carotid artery stent placement with use of a commercially available distal balloon antiembolization system was performed in 303 patients (325 vessels). Clinical neurologic complications were adjudicated at the time of intervention and at 1 month.


RESULTS
Technical success was achieved in all but one case, with reduction of the mean percentage carotid artery stenosis from 79 +/- 9% to 3 +/- 8%. Intolerance to internal carotid artery occlusion occurred in 11 patients (3.6%); in one patient the procedure was aborted, and in 10 the procedures were expeditiously completed with no adverse neurologic events. The 30-day combined rate of all occurrences of stroke and death was 2%. These events included three (0.9%) retinal emboli, three (0.9%) minor strokes, and one (0.3%) fatal stroke from brain hemorrhage, all of which occurred during the procedure with no events occurring after discharge. In addition, two (0.6%) transient ischemic attacks and three (0.9%) reperfusion syndromes occurred, with the patients experiencing complete recovery.


CONCLUSION
Carotid artery stent placement with use of the distal balloon protection system is feasible and safe, and the short-term outcomes appear to be favorable. Optimal application of proper technique is important.
Clinical Outcomes and Prognostic Factors of 695 Nasopharyngeal Carcinoma Patients Treated with Intensity-Modulated Radiotherapy

OBJECTIVE
The 5-year clinical outcomes and prognostic factors of nasopharyngeal carcinoma (NPC) patients treated with intensity modulated radiotherapy (IMRT) were evaluated.


METHODS
Six hundred ninety five NPC patients primarily treated with IMRT in Sichuan Cancer Hospital from January, 2003 to December, 2006 were analyzed retrospectively, including 540 males and 155 females. The prescription dose was delivered as follows: gross target volume (GTVnx) 67-76 Gy in 30-33 fractions, positive neck lymph nodes (GTVln-R/L) 60-70 Gy in 30-33 fractions, high-risk clinical target volume (CTV1) 60-66 Gy, low-risk clinical target volume (CTV2) 54-60 Gy, and clinical target volume of cervical lymph node regions (CTVln) 50-55 Gy.


RESULTS
The 5-year local control (LC), regional control, distant metastasis-free survival (DMFS), disease free survival, disease specific survival, and overall survival (OS) rates were 89.8%, 95.2%, 74.1%, 69.6%, 83.2%, and 77.1%. The 5-year DMFS of IMRT and IMRT combined with chemotherapy was 62.1% and 70.9%, the OS of them was 72.9% and 79.1%. The incidence of grade 3 acute and late toxicity was 38.3% and 4.2%, respectively.


CONCLUSION
The 5-year LC and OS rate of NPC treated with IMRT was 89.8% and 77.1%. The clinical stage, N stage, volume of GTVnx, and chemotherapy were the main prognostic factor for the OS. Distant metastasis was the main pattern of failure.
Acquired thrombocytopenia after transcatheter aortic valve replacement: clinical correlates and association with outcomes.

AIMS
This study aimed to evaluate incidence and correlates for low platelet count after transcatheter aortic valve replacement (TAVR) and to determine a possible association between acquired thrombocytopenia and clinical outcomes.


METHODS AND RESULTS
Patients undergoing TAVR from two medical centres were included in the study. They were stratified according to nadir platelet count post procedure: no/mild thrombocytopenia, ≥100 × 10(9)/L; moderate, 50-99 × 10(9)/L; and severe, <50 × 10(9)/L. A total of 488 patients composed of the study population (age 84.7 ± 7.5 years). At a median time of 2 days after TAVR, 176 patients (36.1%) developed significant thrombocytopenia: 149 (30.5%) moderate; 27 patients (5.5%) severe. Upon discharge, the vast majority of patients (90.2%) had no/mild thrombocytopenia. Nadir platelet count <50 × 10(9)/L was highly specific (96.3%), and a count <150 × 10(9)/L highly sensitive (91.2%), for predicting 30-day death (C-statistic 0.76). Patients with severe acquired thrombocytopenia had a significantly higher mortality rate at 1 year (66.7% for severe vs. 16.0% for no/mild vs. 20.1% for moderate; P < 0.001). In multivariate logistic regression, severe thrombocytopenia was independently associated with 1-year mortality (hazard ratio 3.44, CI: 1.02-11.6; P = 0.046).


CONCLUSIONS
Acquired thrombocytopenia was common after TAVR and was mostly resolved at patient discharge. The severity of thrombocytopenia after TAVR could be used as an excellent, easily obtainable, marker for worse short- and long-term outcomes after the procedure.
Group theoretical aspects of neutrino mixing in Quantum Field Theory

By resorting to recent results on the Quantum Field Theory of mixed particles, we discuss some aspects of three flavor neutrino mixing. Particular emphasis is given to the related algebraic structures and their deformation in the presence of CP violation. A novel geometric phase related to CP violation is introduced.
Postmenopausal frontal fibrosing alopecia: a frontal variant of lichen planopilaris.

BACKGROUND
Lichen planopilaris usually produces multifocal areas of scarring alopecia. Recently, a condition in postmenopausal women characterized by progressive frontal hairline recession associated with scarring has been described.


OBJECTIVE
Our purpose was to study the clinical and histopathologic features and results of treatment in a group of women with the frontal variant of lichen planopilaris and to compare the immunohistochemical profile of scalp biopsy specimens from this subset with that found in the multifocal variant of lichen planopilaris.


METHOD
The clinical data as well as the histopathologic findings in 16 women with frontal fibrosing alopecia were collated. The immunohistochemical profile of six scalp biopsy specimens from the frontal hairline were compared with six specimens from women with multifocal lichen planopilaris.


RESULTS
In addition to the progressive frontal fibrosing alopecia in all 16 women, total loss or a marked decrease of the eyebrows was observed in 13. No evidence of lichen planus was observed at other sites. In one patient multifocal areas of lichen planopilaris developed in the scalp. The frontal fibrosing alopecia was slowly progressive but has stabilized in five patients. Biopsy specimens from the frontal hairline showed histologic changes identical to lichen planopilaris. Immunophenotyping failed to reveal any significant differences between the frontal and multifocal variants. No effective treatments emerged although oral steroids and antimalarials may temporarily slow the course. Hormone replacement therapy did not appear to influence the course of the alopecia.


CONCLUSION
Progressive frontal fibrosing alopecia is a clinically distinct variant of lichen planopilaris that affects in particular elderly women and frequently involves the eyebrows. The basis for this lichenoid tissue reaction targeting frontal scalp follicles and eyebrows is unknown.
The effect of thalidomide on ethanol-induced gastric mucosal damage in mice: involvement of inflammatory cytokines and nitric oxide.

Excessive ethanol ingestion causes gastric mucosal damage through the inflammatory and oxidative processes. The present study was aimed to evaluate the protective effect of thalidomide on ethanol-induced gastric mucosal damage in mice. The animals were pretreated with vehicle or thalidomide (30 or 60 mg/kg, orally), and one hour later, the gastric mucosal injury was induced by oral administration of acidified ethanol. The animals were euthanized one hour after ethanol ingestion, and gastric tissues were collected to biochemical analyzes. The gastric mucosal lesions were assessed by macroscopic and histopathological examinations. The results showed that treatment of mice with thalidomide prior to the administration of ethanol dose-dependently reduced the gastric ulcer index. Thalidomide pretreatment significantly reduced the levels of pro-inflammatory cytokines [tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6], malondialdehyde (MDA) and myeloperoxidase (MPO) activity. In addition, thalidomide significantly inhibited ethanol-induced nitric oxide (NO) overproduction in gastric tissue. Histological observations showed that ethanol-induced gastric mucosal damage was attenuated by thalidomide pretreatment. It seems that thalidomide as an anti-inflammatory agent may have a protective effect against alcohol-induced mucosal damage by inhibition of neutrophil infiltration and reducing the production of nitric oxide and inflammatory cytokines in gastric tissue.
Phase Noise and Jitter Rick Poore Agilent EEsof EDA

Phase noise and jitter are two related quantities associated with a noisy oscillator. Phase noise is a frequency-domain view of the noise spectrum around the oscillator signal, while jitter is a timedomain measure of the timing accuracy of the oscillator period. This paper discusses the relationship between phase noise and jitter in free-running oscillators. The reader is referred to three other papers for a more detailed look at the theory: Demir [1], Hajimiri [2] and Herzel [3]. The phase noise and jitter theory discussed here is mainly taken from these three papers. The jitter in a closed-loop phase-locked loop is not discussed here; see [4, 9, 10].
On Incident Handling and Response: A state-of-the-art approach

Incident Response has always been an important aspect of Information Security but it is often overlooked by security administrators. Responding to an incident is not solely a technical issue but has many management, legal, technical and social aspects that are presented in this paper. We propose a detailed management framework along with a complete structured methodology that contains best practices and recommendations for appropriately handling a security incident. We also present the state-of-the art technology in computer, network and software forensics as well as automated trace-back artifacts, schemas and protocols. Finally, we propose a generic Incident Response process within a corporate environment. © 2005 Elsevier Science. All rights reserved
Social Comparisons and Optimal Information Revelation : Theory and Experiments

I analyze a principal-multiple agent model in which agents have imperfect information about their abilities. When performance is affected by shocks that are common to everyone (such as task difficulty), performance comparisons with others are useful in forming beliefs about own ability. Beliefs, in turn, affect effort and hence subsequent performance. In this context, I explore the principal’s organizational design problem where the amount of interim information disclosed to agents about each other’s performances is a choice variable. I find that the optimal disclosure policy depends on: (1) the degree of substitutability of the agents’ performances in the principal’s payoff function; and (2) the amount of discretion the principal has over manipulating contracts. With exogenous contracts, if agents’ performances are sufficiently complementary, withholding social comparison information may be optimal. However, when the principal can choose the wage scheme in addition to the information policy, full information revelation, coupled with a “cooperative” incentive scheme, is universally optimal. The paper also presents findings from a laboratory experiment, which confirm many of the theoretical predictions. The results are potentially applicable to many real-world situations, ranging from the revelation of grade distributions in classrooms to interim performance evaluations and team formation policies in firms. JEL Codes: D83, J33, M54, C91. ∗I would like to thank David K. Levine, Leeat Yariv and Bill Zame for their invaluable advice and support through all stages of this project. I would also like to thank Michael Chwe, Hongbin Cai, Ichiro Obara, Jozsef Molnar, Joon Song and Yossi Yakhin for helpful conversations. This paper greatly benefited from comments of the participants of the theory seminar at UCLA and the California Institue of Technology, and the Budapest Workshops in Behavioral Economics. Financial support from the Russell Sage Foundation for the experiments is gratefully acknowledged. All errors are mine. †Department of Economics, UCLA. Email: sertac@ucla.edu. An online version of the paper and an online appendix for the experiments can be found at http://www.bol.ucla.edu/~sertac/research.html
Fine-grained Visual Categorization using PAIRS: Pose and Appearance Integration for Recognizing Subcategories

In Fine-grained Visual Categorization (FGVC), the differences between similar categories are often highly localized to a small number of object parts (see Figure 1), and significant pose variation therefore constitutes a great challenge for identification. To address this, we propose extracting image patches using pairs of predicted keypoint locations as anchor points. The benefits of this approach are two-fold: (1) it achieves explicit top-down visual attention on object parts(see Figure 5), and (2) the extracted patches are pose-aligned and thus contain stable appearance features. We employ the popular Stacked Hourglass Network [39] to predict keypoint locations, reporting stateof-the-art keypoint localization results on the challenging CUB-200-2011 [50] dataset. Anchored by these predicted keypoints, an overcomplete basis of pose-aligned patches is extracted and a specialized appearance classification network is trained for each patch. An aggregating network is then applied to combine the patch networks’ individual predictions, producing a final classification score. Our PAIRS algorithm attains an accuracy of 88.6%, an increase of 1.1% over the current state-of-the-art. Enhancing the base PAIRS model with single-keypoint patches produces a further improvement, yielding a new state-of-the-art accuracy of 89.2% on the CUB dataset and clearly demonstrating the power of integrating pose and appearance features.
The effect of dynamic external rotation comparing 2 footprint-restoring rotator cuff repair techniques.

BACKGROUND
Allowing for humeral external rotation while loading rotator cuff repairs has been shown to affect tendon biomechanics when compared with testing with the humerus fixed. Adding dynamic external rotation to a tendon-loading model using footprint-restoring repairs may improve our understanding of rotator cuff repair response to a common postoperative motion.


HYPOTHESIS
A tendon suture-bridging repair will demonstrate better load sharing compared to a double-row repair, and there will be a differential gap formation between the anterior and posterior tendon regions.


STUDY DESIGN
Controlled laboratory study.


METHODS
In 6 fresh-frozen human cadaveric shoulders, a tendon suture-bridging rotator cuff repair was performed; a suture limb from each of 2 medial anchors was bridged over the tendon and fixed laterally with an interference screw. In 6 contralateral match-paired specimens, a double-row repair was performed. For all specimens, a custom jig was employed that allowed dynamic external rotation (0 degrees to 30 degrees ) with loading. A materials testing machine was used to cyclically load each repair from 0 N to 90 N for 30 cycles; each repair was then loaded to failure. A deformation rate of 1 mm/s was employed for all tests. Gap formation between tendon edge and insertion was measured using video digitizing software.


RESULTS
The yield load for the suture-bridging technique (161.88 +/- 35.09 N) was significantly larger than the double-row technique (135.17 +/- 24.03 N) (P = .026). The yield gap between tendon and lateral footprint was significantly greater anteriorly than posteriorly (1.62 +/- 0.82 mm and 0.68 +/- 0.47 mm, respectively) for the suture-bridging technique (P = .024) but not for the double-row technique (1.35 +/- 0.52 mm and 1.05 +/- 0.50 mm, respectively) (P = .34). There were no differences for gap formation, stiffness, ultimate load to failure, and energy absorbed to failure between the 2 repairs (P > .05). The anterior regions of the repair were the first to fail in all constructs. The suture-bridging repair remained interconnected for 5 of 6 repairs.


CONCLUSIONS
The tendon suture-bridging rotator cuff repair has a yield load that is higher than the double-row repair when allowing for external rotation during load testing. External rotation can accentuate gap formation anteriorly at a repaired rotator cuff footprint.


CLINICAL RELEVANCE
Based on the tension of repair, there may be a role for reinforcing the repair anteriorly and limiting external rotation postoperatively.
Protective effect of fruits, vegetables and the Mediterranean diet on asthma and allergies among children in Crete.

BACKGROUND
Atopy is not uncommon among children living in rural Crete, but wheeze and rhinitis are rare. A study was undertaken to examine whether this discrepancy could be attributed to a high consumption of fresh fruit and vegetables or adherence to a traditional Mediterranean diet.


METHODS
A cross-sectional survey was performed in 690 children aged 7-18 years in rural Crete. Parents completed a questionnaire on their child's respiratory and allergic symptoms and a 58-item food frequency questionnaire. Adherence to a Mediterranean diet was measured using a scale with 12 dietary items. Children underwent skin prick tests with 10 common aeroallergens.


RESULTS
80% of children ate fresh fruit (and 68% vegetables) at least twice a day. The intake of grapes, oranges, apples, and fresh tomatoes-the main local products in Crete-had no association with atopy but was protective for wheezing and rhinitis. A high consumption of nuts was found to be inversely associated with wheezing (OR 0.46; 95% CI 0.20 to 0.98), whereas margarine increased the risk of both wheeze (OR 2.19; 95% CI 1.01 to 4.82) and allergic rhinitis (OR 2.10; 95% CI 1.31 to 3.37). A high level of adherence to the Mediterranean diet was protective for allergic rhinitis (OR 0.34; 95% CI 0.18 to 0.64) while a more modest protection was observed for wheezing and atopy.


CONCLUSION
The results of this study suggest a beneficial effect of commonly consumed fruits, vegetables and nuts, and of a high adherence to a traditional Mediterranean diet during childhood on symptoms of asthma and rhinitis. Diet may explain the relative lack of allergic symptoms in this population.
Analyzing collaborative learning processes automatically: Exploiting the advances of computational linguistics in computer-supported collaborative learning

Analyzing Collaborative Learning Processes Automatically Running Head: ANALYZING COLLABORATIVE LEARNING PROCESSES AUTOMATICALLY Analyzing Collaborative Learning Processes Automatically: Exploiting the Advances of Computational Linguistics in Computer-Supported Collaborative Learning Carolyn Rosé, Yi-Chia Wang, Yue Cui, Jaime Arguello Carnegie Mellon University, USA Frank Fischer, Armin Weinberger, Karsten Stegmann University of Munich, Germany Corresponding author: Carolyn Rosé, Language Technologies Institute, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh PA, 15213, Phone: ++1 (412) 268-7130, Fax: ++1 (412) 268-6298, email: cprose@cs.cmu.edu
The gist of maps - summarizing experience for lifelong localization

Robust, scalable place recognition is a core competency for many robotic applications. However, when revisiting places over and over, many state-of-the-art approaches exhibit reduced performance in terms of computation and memory complexity and in terms of accuracy. For successful deployment of robots over long time scales, we must develop algorithms that get better with repeated visits to the same environment, while still working within a fixed computational budget. This paper presents and evaluates an algorithm that alternates between online place recognition and offline map maintenance with the goal of producing the best performance with a fixed map size. At the core of the algorithm is the concept of a Summary Map, a reduced map representation that includes only the landmarks that are deemed most useful for place recognition. To assign landmarks to the map, we use a scoring function that ranks the utility of each landmark and a sampling policy that selects the landmarks for each place. The Summary Map can then be used by any descriptor-based inference method for constant-complexity online place recognition. We evaluate a number of scoring functions and sampling policies and show that it is possible to build and maintain maps of a constant size and that place-recognition performance improves over multiple visits.