bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of ANFIS MPPT Controllers for Partially Shaded Stand Alone Photovoltaic System with Multilevel Inverter
Authors: Ramesh T. , Saravanan R. , Sekar S. 
Published: April 2019

<p>This work presents a unique combination of an boost converter run by a set of two photovoltaic panels (PV) with a MPPT, suitable to guarantee MPP even under partial shadowed conditions, managed by an adaptive neuro fuzzy inference system (ANFIS) trained by the training data derived from a Perturb and observation (P&amp;O) conventional algorithm. The single phase cascaded H bridge five-level inverter (CHI) driven by the individual outputs of the boost converter, with selective harmonic elimination scheme to eliminate typically the seventh order harmonics. Simulation was carried out in the MATLAB/SIMULINK environment validated the proposed scheme. It has been thus established; by both simulations the ANFIS model of MPPT scheme outperforms other schemes of conventional control algorithm.</p>
FPGA Evaluation of Reconfigurable Modules With Fault Detection and Repair Technique
Authors: C Pradeep , R Radhakrishnan 
Published: April 2019

<p>This paper proposes a fault detection and repair algorithm which is suitable for fault free reconfigurable systems. In recent years Built in Self Repair digital systems have got very important role in the applications such as nuclear systems, space missions and communication systems etc where system reliability is very critical . Systems designed to operate in critical conditions will collapse due to even a single fault occurrence. To avoid these situations many methods have developed in recent years. This work proposes an area efficient and fast fault detection and repair algorithm. For the evaluation of the new approach and older methods a system with a standalone module and four add on modules were designed and evaluated for resource utilization using XUPV5 board. The entire FPGA is divided in to tiles and each module is implemented in different tiles using partial reconfiguration method using Xilinx Plan Ahead 14.2 with partial reconfiguration facility.</p>
Bilinear Interpolation Image Scaling Processor for VLSI Architecure
Authors: Dilip Pawar Ashwini , Rameshbabu K , Ashok Kanase Prajakta , Shivdas Shital Arjun 
Published: April 2019

We introduce image scaling processor using VLSI technique. It consist of Bilinear interpolation, clamp filter and a sharpening spatial filter. Bilinear interpolation algorithm is popular due to its computational efficiency and image quality. But resultant image consist of blurring edges and aliasing artifacts after scaling. To reduce the blurring and aliasing artifacts sharpening spatial filter and clamp filters are used as pre-filter. These filters are realized by using T-model and inversed T-model convolution kernels. To reduce the memory buffer and computing resources for proposed image processor design two T-model or inversed T-model filters are combined into combined filter which requires only one line buffer memory. Also, to reduce hardware cost Reconfigurable calculation unit (RCU)is invented. The VLSI architecture in this work can achieve 280 MHz with 6.08-K gate counts, and its core area is 30 378 <em>μ</em>m2 synthesized by a 0.13-<em>μ</em>m CMOS process.
Design of Secure Transmission of Multimedia Data Using SRTP on Linux Platform
Authors: H.G. Shashidhar , Dessai Sanket , Chaudhari Shilpa 
Published: April 2019

This paper aims for providing a viable solution for security in streaming media technology. Service providers do not want the end users to capture and duplicate streaming media data. Once captured data can be re-distributed to millions without any control from the source. Licensing issues also dictate the number of times end user may utilize the data. Encryption is not sufficient as it leaves the system vulnerable to duplication and recording after decryption. In this paper an attempt has been made to transmit digital multimedia data to multiple users. The transmission of the video/audio data has been attempted from one PC to another PC. While doing this, security considerations have to be taken care by using suitable encryption/decryption techniques. A research carried out on the different data transmission protocols reveals that the Secure Real Time Transport Protocol (SRTP) is one of the best available protocols. Hence the SRTP has been deployed in this project on Linux OS using socket programming. The code for the transmitter and the receiver is designed and developed around the SRTP library for transmission of multimedia data. The solution is illustrated by choosing an example of a video clip for transmission and reception. This model increasing the security of streaming media and adds a measure of integrity protection, but it is primarily intended to aid in replay preventions.
Hardware Implementation of Intrusion Detection System for Ad-Hoc Network
Authors: Mano Reji , Raja P.C. Kishore , Joseph Christeena , Baskar Radhika 
Published: April 2019

<p>New technologies have been developed in wireless adhoc network need more security. To widespread the adhoc networks we turn in the attention of wireless hand held device mobile phones communicate with short distance using wireless lan card or Bluetooth. The performance of mobile phone are improved greatly for last few years .so security is more important for mobile networks In this paper hardware implementation of single hop ad-hoc network is implemented and analysed using microcontroller. The protocol implemented in this paper is primarily based on, Ad hoc On-Demand Distance Vector routing. We adopt On Demand Distance Vector routing solely based on source routing and “On Demand” process, so each packet does not have to transmit any periodic routing information. We implemented intrusion detection system with five different nodes and the performance parameters like packet delivery ratio, throughput, delay are computed with attacker and without attacker and on demand distance vector routing protocols is proposed to implement in hardware using Zigbee</p>
On-chip AMBA Bus Based Efficient Bridge between High Performance and Low Peripheral Devices
Authors: Shrivastava Anurag , Kumar Sharma Sudhir 
Published: April 2019

Today’s scenario of SOC deals with integrity and sharing of information or data with various level of communication. AMBA bus protocol has been proposed by ARM community to justify the uneven demand of integrity .In this paper functional description and implementation of high peripheral devices supporting protocol AXI2.0 and its interface between low peripheral devices has been proposed. The connection named as bridge take care of the protocol mismatch and operates on data transfer for uneven speed demand. Asynchronous FIFO has been considered to avoid the complex handshaking mechanism. The design has been implemented within VHDL and implemented on Xilinx Virtex 4.
MEMS Seismic Sensor with FPAA Based Interface Circuit for Frequency-Drift Compensation using ANN
Authors: Pawase Ramesh , Futane N.P. 
Published: April 2019

<p>Electrochemical MEMS seismic sensor is limited by its non-ideality of frequency dependent characteristics hence interface circuits for compensation is necessary. The conventional compensation circuits are limited by high power consumption, bulky external hardware circuitry. In these methods digital circuits are also limited by inherent analog to digital conversion and vice versa which consumes significant power, acquires more size and limits speed. A Field programmable analog array (FPAA) overcomes these limitations and gives fast, simple and user friendly development platform with less development speed comparable to ASIC. Recently FPAA becoming popular for rapid prototyping. The proposed system presents FPAA (Anadigm AN231E04) based hardware implementation of ANN model. Using this FPAA based compensation circuit, the error in frequency drift have been minimized in the range of 3.68% to about 0.64% as compared to ANN simulated results in the range of 23.07% to 0.99 %. This single neuron consumes of power of 206.62 mW. and has minimum block wise resource utilization. The proposed hardware uses all analog blocks which remove the requirement of ADC and DAC reducing significant power and size of interface circuit. This work gives the SMART MEMS seismic sensor with reliable output and ANN based intelligent interface circuit implemented in FPAA hardware.<strong></strong></p>
Metal-Embedded SU-8 Slab Techniques for Low-Resistance Micromachined Inductors
Authors: Mapato Manot , Klysuban Prapong , Kulworawanichpong Thanatchai , Chomnawang Nimit 
Published: April 2019

<span style="font-size: 9pt; font-family: 'Times New Roman', serif;">This work presents new fabrication technique for micro power-</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">inductors </span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">by using metal-embedded SU-8 slab techniques. This techniques used X-ray lithography to fabricate high aspect</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">-r</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">atio LIGA-like micro-structures in form of embedded structure in SU-8 slab </span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">and applied for inductor’s</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;"> winding </span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">fabrication </span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">with aspect-ratio of 10. This</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">high-aspect ratio</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">structure</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;"> can provide very low resistance winding but preserve small form factor and low profile. Inductors </span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">were</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;"> designed as pot-core structures with</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">8 μm-thick permalloy core and 250 μm-thick coppe</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">r</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;"> winding. 4-type</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">s</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;"> of inductors were fabricated including 3, 5, 10 and 16 turns in the area of 1.8 mm<sup>2</sup> to 9.5 mm<sup>2</sup>. All inductors have overall heights of 370 μm, measured inductance value in a range of 70 nH to 1.3 μH at 1 MHz and </span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;">DC</span><span style="font-size: 9pt; font-family: 'Times New Roman', serif;"> resistance value of 30 mΩ to 336 mΩ for 3 turns to 16 turns respectively. From this result, high aspect-ratio inductors show</span><span style="font-size: 10.0pt; font-family: 'Times New Roman','serif'; mso-fareast-font-family: Calibri; mso-bidi-font-family: 'Cordia New'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: TH;"> good results including low-resistance, high inductance, and a small form factor as expected. </span>
Estratificação horizontal da educação superior no Brasil: desigualdades de classe, gênero e raça em um contexto de expansão educacional
Authors: Carvalhaes Flavio , Ribeiro Carlos Antonio Costa 
Published: April 2019

O acesso ao ensino superior é fundamental para diminuir as desvantagens de pessoas com origens nos grupos menos privilegiados, na medida em que aumenta as chances de mobilidade social ascendente. A literatura sobre estratificação educacional nos ensina que tanto o acesso aos diferentes tipos de modalidade ofertada (bacharelados, licenciaturas, cursos tecnológicos) quanto quais cursos são escolhidos (medicina, administração ou pedagogia) influenciam as chances de alcançar os melhores empregos. Tendo em vista que os diferentes diplomas universitários não são iguais em termos das vantagens que trazem para os diplomados, e que há diferenças de acesso entre os cursos universitários em termos de classe, gênero e raça, o perfil de acesso a esses cursos deve ser analisado. Neste artigo, avaliamos de forma inédita e desagregada o padrão de expansão do ensino superior brasileiro e como se configuram as oportunidades no sistema. Mobilizando dados do Inep, nossos resultados apontam que pessoas com origem nos estratos mais altos (pais com ensino superior) tinham probabilidade significativamente maior de entrar nos cursos de maior prestígio (medicina, odontologia, engenharias etc.) e em instituições públicas do que pessoas com origem nas classes mais baixas. Também encontramos forte estratificação por gênero tendo em vista que homens têm maior probabilidade de entrar em cursos das ciências exatas e mulheres em cursos relacionados ao ensino e aos cuidados. A estratificação por gênero, no entanto, combina-se de forma não linear com a estratificação por classe de origem, na medida em que há cursos típicos de homens de classe alta, mulheres de classe alta, homens de classe baixa e mulheres de classe baixa.
Comparison of Rupture Risk of Intracranial Aneurysms Between Familial and Sporadic Patients
Authors: Mensing Liselore A. , Greving Jacoba P. , Verhoeff Tessa A. , Rinkel Gabriel J.E. , Ruigrok Ynte M. 
Published: April 2019

Background and Purpose
A much higher rupture rate for patients with familial intracranial aneurysms (IA) compared with patients with sporadic IA has been reported in a study with highly selected familial aneurysms using sporadic patients from other populations a controls. We aimed to validate these findings in a large independent series of Dutch patients with familial and sporadic IA.

Methods
We conducted a secondary analysis of our institutional cohort of patients who were screened for IAs between 1994 and 2016. We assessed the incidence of aneurysmal subarachnoid hemorrhage between familial, defined as ≥2 affected first-degree relatives with aneurysmal subarachnoid hemorrhage and unruptured IA (UIA), and sporadic patients with UIA with Cox regression analysis.

Results
We identified 62 familial IA patients with 91 UIA and 412 sporadic IA patients with 542 UIA. Despite familial aneurysms being smaller and more often located at low risk sites than sporadic IA, 3 familial patients had aneurysmal subarachnoid hemorrhage (0.77 ruptures per 100 aneurysm-years [95% CI, 0.20–2.09]) compared with 7 sporadic patients (0.51 ruptures per 100 aneurysm-years [95% CI, 0.22–1.01]). As compared to sporadic UIA, familial UIA seems to have a 3-fold higher risk of rupture (hazard ratio, 2.9 [95% CI, 0.6–14]).

Conclusions
Our results suggest a slightly increased risk of aneurysm rupture for familial compared with sporadic IA, although we were not able to demonstrate this with statistical significance. However, the rupture risk seems less strongly increased than found in a previous study. Based on our results, we recommend to treat familial UIA more aggressively.
Description of three new species of Nymphistrini (Coleoptera: Histeridae: Haeteriinae) from Central America
Authors: TISHECHKIN ALEXEY K. , CÁRDENAS ALIDA MERCADO 
Published: April 2019

Three new species belonging to the tribe Nymphistrini of the obligate myrmeco- and termitophilous subfamily Haeteriinae (Coleoptera: Histeridae) are described from Central America: Nymphister rettenmeyeri sp. n. (Costa Rica and Panama), Trichoreninus carltoni sp. n. (Belize and Honduras) and T. neo sp. n. (Costa Rica and Panama). Identification keys for the Central American species of both genera are prepared. Available host records for N. rettenmeyeri confirm the symbiosis of the genus with Eciton army ants: the species has been found in colonies of E. burchelli (Westwood), E. hamatum (Fabricius) and E. mexicanum Roger. Host records are not available for the new species of Trichoreninus as all known specimens were collected by flight intercept traps.
Climate Science Needs to Take Risk Assessment Much More Seriously
Authors: Sutton Rowan T. 
Published: April 2019

AbstractFor decision-makers, climate change is a problem in risk assessment and risk management. It is, therefore, surprising that the needs and lessons of risk assessment have not featured more centrally in the consideration of priorities for physical climate science research, or in the Working Group I contributions to the major assessment reports of the Intergovernmental Panel on Climate Change. This article considers the reasons, which include a widespread view that the job of physical climate science is to provide predictions and projections—with a focus on likelihood rather than risk—and that risk assessment is a job for others. This view, it is argued, is incorrect. There is an urgent need for physical climate science to take the needs of risk assessment much more seriously. The challenge of meeting this need has important implications for priorities in climate research, climate modeling, and climate assessments.
Evaluation of an Accessible, Real-Time, and Infrastructure-Free Indoor Navigation System by Users Who Are Blind in the Mall of America
Authors: Giudice Nicholas A. , Whalen William E. , Riehle Timothy H. , Anderson Shane M. , Doore Stacy A. 
Published: April 2019

Introduction: This article describes an evaluation of MagNav, a speech-based, infrastructure-free indoor navigation system. The research was conducted in the Mall of America, the largest shopping mall in the United States, to empirically investigate the impact of memory load on route-guidance performance. Method: Twelve participants who are blind and 12 age-matched sighted controls participated in the study. Comparisons are made for route-guidance performance between use of updated, real-time route instructions (system-aided condition) and a system-unaided (memory-based condition) where the same instructions were only provided in advance of route travel. The sighted controls (who navigated under typical visual perception but used the system for route guidance) represent a best case comparison benchmark with the blind participants who used the system. Results: Results across all three test measures provide compelling behavioral evidence that blind navigators receiving real-time verbal information from the MagNav system performed route travel faster (navigation time), more accurately (fewer errors in reaching the destination), and more confidently (fewer requests for bystander assistance) compared to conditions where the same route information was only available to them in advance of travel. In addition, no statistically reliable differences were observed for any measure in the system-aided conditions between the blind and sighted participants. Posttest survey results corroborate the empirical findings, further supporting the efficacy of the MagNav system. Discussion: This research provides compelling quantitative and qualitative evidence showing the utility of an infrastructure-free, low-memory demand navigation system for supporting route guidance through complex indoor environments and supports the theory that functionally equivalent navigation performance is possible when access to real-time environmental information is available, irrespective of visual status. Implications for designers and practitioners: Findings provide insight for the importance of developers of accessible navigation systems to employ interfaces that minimize memory demands.
Adverse Events after Rigid and Flexible Endoscopic Repair of Zenker’s Diverticula: A Systematic Review and Meta‐analysis
Authors: Crawley Brianna , Dehom Salem , Tamares Shanalee , Marghalani Abdullah , Ongkasuwan Julina , Reder Lindsay , Ivey Chandra , Amin Milan , Fritz Mark , Pitman Michael , Tulunay‐Ugur Ozlem , Weissbrod Philip 
Published: April 2019

ObjectiveTo determine adverse events after endoscopic flexible vs endoscopic rigid cricopharyngeal myotomy for treatment of Zenker’s diverticulum (ZD).Data SourcesSystematic review of MEDLINE, Web of Science, CINAHL, Clinicaltrials.gov, and Cochrane Central Register of Controlled Trials for all years according to Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) guidelines. Additional studies were identified from review citations and a by hand search of manuscripts referencing ZD.Review MethodsA structured literature search was conducted to identify studies for this systematic review. Methodological Index for Non‐randomized Studies (MINORS) criteria were applied to assess study quality. For inclusion, each study had to provide data for at least 10 adult patients who had undergone endoscopic ZD repair reporting clear association with the postprocedure course in each case. Data extracted included all reported adverse events, recurrences, follow‐up, and operative times.ResultsIn total, 115 studies were included. All but 8 were retrospective case series. Sixty‐one reported series of patients after rigid endoscopic stapler repair, 31 after rigid laser repair, and 13 with other rigid endoscopic instruments. Twenty‐nine flexible endoscopic studies were included. Mortality, infection, and perforation were not significantly more likely in either the rigid or the flexible group, but bleeding and recurrence were more likely after flexible endoscopic techniques (20% vs <10% and 4% vs 0%, respectively). Dental injury and vocal fold palsy were reported rarely in the rigid endoscopic groups.ConclusionsAdverse events are rare after endoscopic Zenker’s repair. The flexible approach minimizes exposure limitations and can be completed in some patients without general anesthesia. Transoral rigid approaches result in fewer revision surgeries compared with flexible diverticulotomy.
A Cross‐sectional Analysis of Pediatric Ambulatory Tonsillectomy Surgery in the United States
Authors: Kou Yann‐Fuu , Mitchell Ron B. , Johnson Romaine F. 
Published: April 2019

ObjectivesTo report nationwide estimates of ambulatory tonsillectomies performed in hospitals and ambulatory surgery centers in the United States.Study DesignCross‐sectional survey.SettingNational databases.Subjects and MethodsWe analyzed the 2010 National Hospital Ambulatory Medical Care Survey of hospitals and ambulatory surgery centers for pediatric patients undergoing tonsillectomy with or without adenoidectomy. We determined estimations of the number of procedures, demographics, and outcomes. A tonsillectomy cohort from the 2009 National Inpatient Sample served as a comparison group.ResultsIn 2010, there were an estimated 339,000 (95% CI, 288,000‐391,000) ambulatory tonsillectomies in the United States. The mean age was 7.8 years (SD, 5.1), and 71,000 (21.0%) were <3 years old. The male:female ratio was even (51% vs 49%). The racial makeup mirrored the US census (69% white, 18% Hispanic, and 12% black). Obstructive sleep‐disordered breathing was reported in 48%. Perioperative events such as apnea, hypoxia, or bleeding occurred 7.8% of the time. Approximately 9% of patients could not be discharged home. When compared with cases of inpatient tonsillectomies, ambulatory cases comprised older patients (7.8 vs 5.9 years, P <. 001) and were less likely to include obstructive sleep‐disordered breathing (48% vs 77%, P <. 001).ConclusionTonsillectomy was one of the most common ambulatory surgical procedures in 2010 in the United States. The majority of patients were low risk, but some at higher risk were included (age ≤3 years and obstructive sleep apnea). The National Hospital Ambulatory Medical Care Survey estimates provide useful baseline data for future research on quality measures and outcomes.