LLukas22/scidocs huggingface dataset:
Microstrip antenna designs for RF energy harvesting

In recent years, alternate energy sources has become essential as the demand for power increases. In the last energy decades energy obtained from external sources such as thermal energy, solar power, wind energy, and RF energy has been in use for various purposes. To provide unlimited energy for the lifespan of electronic devices, energy harvesting uses inexhaustible sources with no adverse environmental effect. This paper focuses on RF energy harvesting. The receiving antenna captures the RF energy from surrounding sources, such as nearby mobile phones, wireless LANs (WLANs), FM/AM radio signals, broadcast television signals and rectified into a usable DC voltage. One possibility to overcome their power limitations is to extract (harvest) energy from the environment to either recharge a battery, or even to directly power the electronic device. To meet various objectives in last few years, several antenna designs of rectenna have been proposed for use in RF energy harvesting,. Among the other antennas, microstrip patch antennas are widely used because of their low profile, light weight, and planar structure. This paper presents several methods to design and energy harvesting device depending on the type of energy available and also presents microstrip path structural rectenna are explains RF signal harvester for powering low consumption electrical devices.
OpenFace: A general-purpose face recognition library with mobile applications

Cameras are becoming ubiquitous in the Internet of Things (IoT) and can use face recognition technology to improve context. There is a large accuracy gap between today’s publicly available face recognition systems and the state-of-the-art private face recognition systems. This paper presents our OpenFace face recognition library that bridges this accuracy gap. We show that OpenFace provides near-human accuracy on the LFW benchmark and present a new classification benchmark for mobile scenarios. This paper is intended for non-experts interested in using OpenFace and provides a light introduction to the deep neural network techniques we use. We released OpenFace in October 2015 as an open source library under the Apache 2.0 license. It is available at: http://cmusatyalab.github.io/openface/ This research was supported by the National Science Foundation (NSF) under grant number CNS-1518865. Additional support was provided by Crown Castle, the Conklin Kistler family fund, Google, the Intel Corporation, and Vodafone. NVIDIA’s academic hardware grant provided the Tesla K40 GPU used in all of our experiments. Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and should not be attributed to their employers or funding sources.
Asymptotically Optimal Motion Planning for Learned Tasks Using Time-Dependent Cost Maps

In unstructured environments in people's homes and workspaces, robots executing a task may need to avoid obstacles while satisfying task motion constraints, e.g., keeping a plate of food level to avoid spills or properly orienting a finger to push a button. We introduce a sampling-based method for computing motion plans that are collision-free and minimize a cost metric that encodes task motion constraints. Our time-dependent cost metric, learned from a set of demonstrations, encodes features of a task's motion that are consistent across the demonstrations and, hence, are likely required to successfully execute the task. Our sampling-based motion planner uses the learned cost metric to compute plans that simultaneously avoid obstacles and satisfy task constraints. The motion planner is asymptotically optimal and minimizes the Mahalanobis distance between the planned trajectory and the distribution of demonstrations in a feature space parameterized by the locations of task-relevant objects. The motion planner also leverages the distribution of the demonstrations to significantly reduce plan computation time. We demonstrate the method's effectiveness and speed using a small humanoid robot performing tasks requiring both obstacle avoidance and satisfaction of learned task constraints.
Sustainable Solutions for Municipal Solid Waste Management in Thailand

General as well as the MSW management in Thailand is reviewed in this paper. Topics include the MSW generation, sources, composition, and trends. The review, then, moves to sustainable solutions for MSW management, sustainable alternative approaches with an emphasis on an integrated MSW management. Information of waste in Thailand is also given at the beginning of this paper for better understanding of later contents. It is clear that no one single method of MSW disposal can deal with all materials in an environmentally sustainable way. As such, a suitable approach in MSW management should be an integrated approach that could deliver both environmental and economic sustainability. With increasing environmental concerns, the integrated MSW management system has a potential to maximize the useable waste materials as well as produce energy as a by-product. In Thailand, the compositions of waste (86%) are mainly organic waste, paper, plastic, glass, and metal. As a result, the waste in Thailand is suitable for an integrated MSW management. Currently, the Thai national waste management policy starts to encourage the local administrations to gather into clusters to establish central MSW disposal facilities with suitable technologies and reducing the disposal cost based on the amount of MSW generated. Keywords— MSW, management, sustainable, Thailand
Off-Shoring and Productivity Growth in the Italian Manufacturing Industries

We study the relation between the off-shoring of intermediates and services and productivity growth in the Italian manufacturing industries in 1995-2003. Our results indicate that the offshoring of intermediates within the same industry (“narrow off-shoring”) is beneficial for productivity growth, while the off-shoring of services is not. We also find that the way in which off-shoring is measured may matter considerably. The positive relation between offshoring of intermediates and productivity growth is there with our direct measures based on input-output data but disappears when either a broad measure or the Feenstra-Hanson offshoring measure employed in other studies are used instead. JEL Code: F16, F23, O4.
The role of agri-environment schemes in conservation and environmental management

Over half of the European landscape is under agricultural management and has been for millennia. Many species and ecosystems of conservation concern in Europe depend on agricultural management and are showing ongoing declines. Agri-environment schemes (AES) are designed partly to address this. They are a major source of nature conservation funding within the European Union (EU) and the highest conservation expenditure in Europe. We reviewed the structure of current AES across Europe. Since a 2003 review questioned the overall effectiveness of AES for biodiversity, there has been a plethora of case studies and meta-analyses examining their effectiveness. Most syntheses demonstrate general increases in farmland biodiversity in response to AES, with the size of the effect depending on the structure and management of the surrounding landscape. This is important in the light of successive EU enlargement and ongoing reforms of AES. We examined the change in effect size over time by merging the data sets of 3 recent meta-analyses and found that schemes implemented after revision of the EU's agri-environmental programs in 2007 were not more effective than schemes implemented before revision. Furthermore, schemes aimed at areas out of production (such as field margins and hedgerows) are more effective at enhancing species richness than those aimed at productive areas (such as arable crops or grasslands). Outstanding research questions include whether AES enhance ecosystem services, whether they are more effective in agriculturally marginal areas than in intensively farmed areas, whether they are more or less cost-effective for farmland biodiversity than protected areas, and how much their effectiveness is influenced by farmer training and advice? The general lesson from the European experience is that AES can be effective for conserving wildlife on farmland, but they are expensive and need to be carefully designed and targeted.
Integrin-mediated mechanotransduction

Cells can detect and react to the biophysical properties of the extracellular environment through integrin-based adhesion sites and adapt to the extracellular milieu in a process called mechanotransduction. At these adhesion sites, integrins connect the extracellular matrix (ECM) with the F-actin cytoskeleton and transduce mechanical forces generated by the actin retrograde flow and myosin II to the ECM through mechanosensitive focal adhesion proteins that are collectively termed the "molecular clutch." The transmission of forces across integrin-based adhesions establishes a mechanical reciprocity between the viscoelasticity of the ECM and the cellular tension. During mechanotransduction, force allosterically alters the functions of mechanosensitive proteins within adhesions to elicit biochemical signals that regulate both rapid responses in cellular mechanics and long-term changes in gene expression. Integrin-mediated mechanotransduction plays important roles in development and tissue homeostasis, and its dysregulation is often associated with diseases.
Reporting of child abuse: a follow-up survey of Texas dentists.

PURPOSE
Child abuse is a disturbingly common finding in society today. There have been substantial and significant increases in the incidence of child abuse since the last national incidence study was conducted in 1986. Kassebaum first reported the under-reporting of child abuse by Texas dental professionals in a survey in 1986. The objective of the current study was twofold: (1) assess the level of knowledge and attitudes among dental professionals on the important issue of child abuse; (2) evaluate and compare the results of the current study with a similar survey conducted in 1986.


METHODS
A 24-question survey similar in format and content to the 1986 questionnaire was mailed to 1,046 Texas dentists, randomly selected from a membership roster provided by the Texas Dental Association. Both general dentists and selected specialists were included in the study group. The questionnaire consisted of multiple-choice and dichotomous yes/no questions.


RESULTS
There were 383 responses to the questionnaire, yielding a response rate of 38%. The majority (N=289) of the respondents were general dentists. In answering questions about suspected and reported cases of child abuse, nearly 50% of the responding dentists reported they had suspected at least 1 case of child abuse. In the 1986 study, only 36% of the responding dentists reported they had suspected at least 1 case of child abuse. Between 1986 and 2001, the survey has shown that the percentage of dentists who reported at least 1 case to authorities slightly increased from 19% in 1986 to 25% in 2001, but the ratio of suspected to reported cases had not changed since 1986.


CONCLUSIONS
Although the composite percentage of suspecting and reporting cases of child abuse from this survey is higher than the percentage demonstrated in 1986 study, there was no significant change in the relative ratio of reported cases to suspected cases in both surveys. This indicates that under-reporting of child abuse cases is still a significant problem in the dental profession in Texas.
Randomized clinical trial comparing a polypropylene with a poliglecaprone and polypropylene composite mesh for inguinal hernioplasty.

BACKGROUND
: The aim was to assess whether a partially absorbable monofilament mesh could influence postoperative pain and time to return to normal activity after Lichtenstein hernioplasty.


METHODS
: The study randomized patients undergoing inguinal hernia repair in 15 centres into two groups according to mesh type: lightweight (poliglecaprone-polypropylene composite) and heavyweight (polypropylene). A modified suture technique was used in the lightweight group. Follow-up on day 7 and at 3, 6 and 12 months evaluated the incidence of early and late complications, recurrence rate, quality of life, postoperative pain and return to physical activity.


RESULTS
: A total of 600 patients were randomized and, after monitoring visits (leading to the exclusion of seven hospitals), 392 qualified for assessment. At 12 months, the recurrence rate did not differ (1.9 versus 0.6 per cent; P = 0.493). The lightweight group reported less pain on day 7 (55.2 versus 36.2 per cent; P < 0.001) and at 3 months (17.1 versus 9.8 per cent; P = 0.033) but pain was similar for both groups at 1 year. General health and physical activity according to Short Form 36 scores increased in both groups.


CONCLUSION
: Use of partially absorbable mesh reduced postoperative pain in the short term. No difference in pain or recurrence rates were observed at 12 months.


REGISTRATION NUMBER
CCT-NAPN-17412 (http://www.controlled-trials.com) Published by John Wiley & Sons, Ltd.
Robotics as the Delivery Vehicle: A contexualized, social, self paced, engineering education for life-long learners

In this paper we outline our novel approach to undergraduate engineering education, “A contexualized, social, self-paced, engineering education for life-long learners” through a series of two new freshman courses. Throughout the new courses, we use a smaller version of our advanced research platform, RHex, to integrate introductory programming material with electrical and systems engineering theory. We move away from the traditional “filing cabinet” test and drill approach (fill minds up with facts and test) as students start to become life-long learners, creators, and innovators through exposure to research level problems. Working with cognitive scientists to collect data, our initial assessments have been very positive. Treating students as junior-researchers and exposing them to cutting edge robotics yielded a 98% attendance rate, 95% of students choosing to take a optional follow-on course, and 90% saying they would recommend the course to another student. We describe as well our students’ development of leadership and communications skills through a required service-learning component. Working with high-schoolers from the School District of Philadelphia the undergraduates in the course in turn teach material similar to what they have learned in class.
Implementation and evaluation of transparent fault-tolerant Web service with kernel-level support

Most of the techniques used for increasing the availability of web services do not provide fault tolerance for requests being processed at the time of server failure. Other schemes require deterministic servers or changes to the web client. These limitations are unacceptable for many current and future applications of the Web. We have developed an efficient implementation of a client-transparent mechanism for providing fault-tolerant web service that does not have the limitations mentioned above. The scheme is based on a hot standby backup server that maintains logs of requests and replies. The implementation includes modifications to the Linux kernel and to the Apache web server, using their respective module mechanisms. We describe the implementation and present an evaluation of the impact of the backup scheme in terms of throughput, latency, and CPU processing cycles overhead.
Doubly-Fed Induction Generator for Variable Speed Wind Energy Conversion Systems-Modeling & Simulation

Abstract: The aim of this paper is to present the complete modeling and simulation of wind turbine driven doublyfed induction generator which feeds ac power to the utility grid. For that, two pulse width modulated voltage source converters are connected back to back between the rotor terminals and utility grid via common dc link. The grid side converter controls the power flow between the DC bus and the AC side and allows the system to be operated in subsynchronous and super synchronous mode of operation. The proper rotor excitation is provided by the machine side converter, wind power, as an important and promising renewable resource, is widely studied. Recently, doubly fed induction generator (DFIG) becomes more popular in wind power due to its various advantages over other types of wind turbines, such as variable speed, lower power electronic cost and so on. In this paper, first of all, a dynamic model of DFIG-based wind power system is derived in complex form. Based on the dynamic model, a complete control strategy is presented to control the rotor-side converter and grid-side converter, respectively. A decoupled control method, which is capable of separating d-axis and q-axis components of rotor current, is applied to harness wind power. The concept of instantaneous power is introduced to regulate DC-link voltage. The complete system is modeled and simulated in the MATLAB Simulink environment in such a way that it can be suited for modeling of all types of induction generator configurations.
Child and adolescent anxiety disorders and early attachment.

OBJECTIVE
The major aim of this research is to determine whether infants who were anxiously/resistantly attached in infancy develop more anxiety disorders during childhood and adolescence than infants who were securely attached. To test different theories of anxiety disorders, newborn temperament and maternal anxiety were included in multiple regression analyses.


METHOD
Infants participated in Ainsworth's Strange Situation Procedure at 12 months of age. The Schedule for Affective Disorders and Schizophrenia for School-Age Children was administered to the 172 children when they reached 17.5 years of age. Maternal anxiety and infant temperament were assessed near the time of birth.


RESULTS
The hypothesized relation between anxious/resistant attachment and later anxiety disorders was confirmed. No relations with maternal anxiety and the variables indexing temperament were discovered, except for a composite score of nurses' ratings designed to access "high reactivity," and the Neonatal Behavioral Assessment Scale clusters of newborn range of state and inability to habituate to stimuli. Anxious/resistant attachment continued to significantly predict child/adolescent anxiety disorders, even when entered last, after maternal anxiety and temperament, in multiple regression analyses.


CONCLUSION
The attachment relationship appears to play an important role in the development of anxiety disorders. Newborn temperament may also contribute.
The relevance of the vertex bremsstrahlung photon detection in the scattering experiments at low energy

Abstract We discuss the size of the ν e ( ν e ) e − →ν e ( ν e ) e − cross section reduction due to the rejection of the events with a vertex bremsstrahlung photon above a certain energy in the final state. In particular we analyze the effect in experiments designed to detect the low energy ν e and ν e from a nuclear reactor and from the Sun. We find that such reduction has to be considered in a relatively high statistic reactor experiment, while it is negligible for pp and 7 Be solar neutrino detection.
Phenomenology and carnival production chain

The book “The Visible and The Invisible” (Merleau-Ponty 1971), first published in French in 1964, is an achievement in itself of the phenomenology of Maurice MerleauPonty, where the writing is gradually constructed as a process shared with the reader. But, in Brazil, many other achievements derived from this work. Is was read by Mario Pedrosa—a brazilian intellectual involved in the Rio de Janeiro artistic field, specially the Grupo Frente, that in the 1950s seeked a new language of concrete art forms.2 This article raises the hypothesis that there would be a greater consequence of this intellectual influence over brazilian neoconcrete works, such as Hélio Oiticica’s—part of this influence would have spread beyond erudite circles of the visual arts, especially in the carnival of Samba Schools of the city of Rio de Janeiro. The relationship that Oiticica established with the dancers of Mangueira is widely noted as quoted by the artist himself in many ways.3
Peptic ulcer bleeding: comparison of two hemostatic procedures

Objective:Bleeding is a serious complication of peptic ulcer. Endoscopic injection therapy is accepted as a homeostatic endoscopic treatment in acute nonvariceal of upper GI hemorrhages, particularly in bleeding peptic ulcers. The risk of rebleeding is predicted by the endoscopic appearance of ulcer features classified according to Forrest's criteria.METHODS:Two hundred twenty-three patients were selected from 1,003 emergency upper endoscopies for GI bleeding. According to Forrest's criteria, 99 well-matched patients with ulcers F1 and F2 were considered at risk of rebleeding; 54 patients (group A) received local ulcer injection of epinephrine solution 1:10,000, whereas (group B) patients were treated with local epinephrine injection and then with endoscopic Hemoclips.1 We considered the control of bleeding, the number of rebleeding episodes, the need for emergency surgery, and mortality.RESULTS:Bleeding ulcers stopped completely in 83.3% group A patients, and in 95.6% group B patients (p = not significant). In a subset of F1b patients the rebleeding rate was 31% for group A and 0% for group B (p < 0.05). There was no mortality as a result of the procedure. There was a trend toward reducing surgery in favor of the combined therapy (0% vs 7.4%). No differences were found in transfusion requirements or mean hospitalization days.CONCLUSIONS:We conclude that endoscopic injection of 1:10,000 epinephrine solution alone and epinephrine solution plus application of Hemoclips are equivalent therapies in treating bleeding and rebleeding from peptic ulcers. There was no difference between therapies in terms of need for surgery or mortality. Possibly combination therapy is more effective in treating ulcers that are actively oozing.
DETECTION AND PREDICTION OF MANAGERIAL FRAUD IN THE FINANCIAL STATEMENTS OF TUNISIAN BANKS

This article models the detection and prediction of managerial fraud in the financial statements of Tunisian banks. The methodology used consist of examining a battery of financial ratios used by the Federal Deposit Insurance Corporation (FDIC) as indicators of the financial situation of a bank. We test the predictive power of these ratios using logistic regression. The results show that we can detect managerial fraud in the financial statements of Tunisian banks using performance ratios three years before its occurrence with a classification rate of 71.1%. JEL: M41, M42, C23, C25, G21