bluuebunny/crossref_metadata_2025_split huggingface dataset:
No difference in clinical outcome between patient-matched positioning guides and conventional instrumented total knee arthroplasty two years post-operatively
Authors: Boonen B. , Schotanus M. G. M. , Kerens B. , van der Weegen W. , Hoekstra H. J. , Kort N. P. 
Published: June 2016

AimsWe wished to compare the clinical outcome, as assessed by questionnaires and the rate of complications, in total knee arthroplasty (TKA) undertaken with patient-matched positioning guides (PMPGs) or conventional instruments.Patients and MethodsA total of 180 patients (74 men, 106 women; mean age 67 years) were included in a multicentre, adequately powered, double-blind, randomised controlled trial. The mean follow-up was 44 months (24 to 57).ResultsThere were no significant or clinically relevant differences between the two groups for all outcome measures (Knee Society Score, p = 0.807; Oxford Knee Score, p = 0.304; Western Ontario and McMaster osteoarthritis index, p = 0.753; visual analogue scale for pain, p = 0.227; EuroQol-5D-3L index score, p = 0.610; EuroQol-5D-3L VAS health, p = 0.968.) There was no difference in the rate of complications (p = 0.291).ConclusionPMPGs are already in relatively common use and their short-term clinical results are equal to conventional instrumented TKA. Cite this article: Bone Joint J 2016;98-B:939–44.
The role for arthroscopic partial meniscectomy in knees with degenerative changes
Authors: Lamplot J. D. , Brophy R. H. 
Published: June 2016

AimsPatients with osteoarthritis of the knee commonly have degenerative meniscal tears. Arthroscopic meniscectomy is frequently performed, although the benefits are debatable. Recent studies have concluded that there is no role for arthroscopic washout in osteoarthritis of the knee. Our aim was to perform a systematic review to assess the evidence for the efficacy of arthroscopic meniscectomy in patients with meniscal tears and degenerative changes in the knee.Patients and MethodsA literature search was performed, using the PubMed/MEDLINE database, for relevant articles published between 1975 and 2015. A total of six studies, including five randomised controlled trials and one cross-sectional study of a prospective cohort, met the inclusion criteria. Relevant information including study design, operations, the characteristics of the patients, outcomes, adverse events and further operations were extracted.ResultsThe degree of osteoarthritis in the patients who were included and the rate of cross over from one form of treatment to another varied in the studies. Two randomised controlled trials showed a benefit of arthroscopic surgery in patients with limited degenerative joint disease, compared with conservative treatment. One cross-sectional study showed that patients with less severe degenerative changes had better outcomes.ConclusionPatients with symptomatic meniscal tears and degenerative changes in the knee can benefit from arthroscopic meniscectomy, particularly if the osteoarthritis is mild. A trial of conservative management may be effective and should be considered, especially in patients with moderate osteoarthritis. Cite this article: Bone Joint J 2016;98-B:934–8.
Influence of Density on Properties of Compressed Weeping Willow (Salix babylonica) Wood Panels
Authors: Li Neng , Bao Minzhen , Chen Yuhe , Zhang Yamei , Bao Yongjie , Yu Wenji 
Published: June 2016

Abstract
Compressed wood panels (CWP) is a biomaterial that can potentially address common issues with fast-growing wood, including low density, high perishability, and low mechanical strength. As wood density is known to significantly affect material properties, this study examines the cellular structure, wettability, physicomechanical performance, water absorption (WA), and dimensional stability of compressed weeping willow wood panels (CWWWP) at various densities. The cellular structure was investigated by a scanning electron microscope, and major physicomechanical properties were also measured, i.e., modulus of rupture, modulus of elasticity, and horizontal shear strength. Contact angle measurements and surface free-energy (SFE) calculations were used to elucidate CWWWP wettability. The experimental results showed that the cellular deformation, composite strength, and volume-swelling efficiency all tended to increase with increasing density. However, both the SFE and WA were negatively correlated with the CWWWP density. This study concludes that higher-density CWWWP, with better mechanical performance and lower WA, is suitable for structural wood products and engineering materials, whereas lower-density CWWWP is suited for use as decorative material because of its lower density and higher SFE, which increases the ease of coating and painting.
Estrategias determinantes para la competitividad de un destino de sol y playa. El caso de Mazatlán, Sinaloa, México.
Authors: Velarde Valdez Mónica , Santillán Núñez María Aída , Magio Kennedy Obombo 
Published: June 2016

El presente estudio se realizó con el propósito de dar un entendimiento global de la situación actual en lo referente a la competitividad de Mazatlán como destino turístico; conocer las particularidades del destino permite aplicar procedimientos innovadores y participativos en la búsqueda de competitividad, lo que favorece un mejor desarrollo turístico. El principal valor de esta investigación radica en la necesidad de identificar las estrategias para lograr competitividad y convertir el turismo de sol y playa en una palanca de desarrollo económico y generadora de empleos. El estudio se realizó bajo la perspectiva metodológica cualitativa ejecutada a través de diferentes métodos; por un lado, el enfoque de triangulación implicó análisis documental para contextualizar la competitividad turística del destino y por otro lado, análisis de datos generados de las discusiones en grupos focales con los actores de la actividad turística del destino. Se revisaron los fundamentos teóricos de la competitividad sistémica, con referencia especial al Índice de Competitividad Sistémica de las Ciudades Mexicanas (ICSar-ciudades) únicamente para definir indicadores o categorías analíticas que fueron incluidos en la discusión (marco regulatorio, ambiente de negocios e infraestructura y recursos humanos, culturales y naturales). Entre los principales resultados, se destaca la necesidad empaquetar los atractivos turísticos del destino, lo cual permita constituir un producto turístico, tarifado y publicado como un elemento completo; la necesidad de contar con adecuados canales de distribución y comercialización; un adecuado sistema de movilidad en el destino que cubra las necesidades de los turistas; el fortalecimiento de la infraestructura turística para maximizar los flujos turísticos; colaboración de todos los niveles de gobierno e Instituciones, sectores públicos o privados en el diseño e implementación de planes de marketing.
On Popoviciu-Ionescu Functional Equation
Authors: Almira Jose M. 
Published: June 2016

AbstractWe study a functional equation first proposed by T. Popoviciu [15] in 1955. It was solved for the easiest case by Ionescu [9] in 1956 and, for the general case, by Ghiorcoiasiu and Roscau [7] and Radó [17] in 1962. Our solution is based on a generalization of Radó’s theorem to distributions in a higher dimensional setting and, as far as we know, is different than existing solutions. Finally, we propose several related open problems.
Determination of emissivity coefficient of heat-resistant super alloys and cemented carbide
Authors: Kieruj Piotr , Przestacki Damian , Chwalczuk Tadeusz 
Published: June 2016

Abstract
This paper presents the analysis of emissivity engineering materials according to temperature. Experiment is concerned on difficult to machine materials, which may be turned with laser assisting. Cylindrical samples made of nickel-based alloys Inconel 625, Inconel 718, Waspaloy and tungsten-carbides based on cobalt matrix were analyzed. The samples’ temperature in contact method was compared to the temperature measured by non-contact pyrometers. Based on this relative, the value of the emissivity coefficient was adjusted to the right indication of pyrometers.
Process influences and correction possibilities for high precision injection molded freeform optics
Authors: Dick Lars , Risse Stefan , Tünnermann Andreas 
Published: June 2016

Abstract
Modern injection molding processes offer a cost-efficient method for manufacturing high precision plastic optics for high volume applications. Besides form deviation of molded freeform optics, internal material stress is a relevant influencing factor for the functionality of a freeform optics in an optical system. This paper illustrates dominant influence parameters of an injection molding process relating to form deviation and internal material stress based on a freeform demonstrator geometry. Furthermore, a deterministic and efficient way for 3D mold correcting of systematic, asymmetrical shrinkage errors is shown to reach micrometer range shape accuracy at diameters up to 40 mm. In a second case, a stress-optimized parameter combination using unusual molding conditions was 3D corrected to reach high precision and low stress freeform polymer optics.
Assessment of the data on distribution, habitats and population size of Liparis loeselii (Orchidaceae) in Lithuania
Authors: Žalneravičius Egidijus , Gudžinskas Zigmantas 
Published: June 2016

Abstract

Liparis loeselii is a declining orchid species in almost all European countries, mostly because of habitat loss. Therefore, good knowledge about the species ecology, distribution and populations is required in order to substantiate measures for its conservation. The aim of this research was to evaluate all available information about distribution, habitat types and population sizes of L. loeselii in Lithuania, in order to reveal the current state of our knowledge and identify information gaps. The study was based on the analysis of herbarium specimens and information in publications and various databases (a total of 481 unique records were used: 118 from herbaria, 121 from literature and 242 from databases). Intensive accumulation of information about L. loeselii started in the second half of the 20th century and a particularly large number of records were made in the period from 2010 to 2015 during the implementation of inventory and mapping of EU Habitats all over Lithuania. A summary of all information about L. loeselii revealed that it was registered in a total of 93 grid squares, and is mainly confined to uplands. The available information is quite sufficient for the evaluation of the species distribution and prevailing habitats, but is incomplete for the evaluation of population sizes, demographic structures and population trends under changing habitat conditions. Additional investigations are, therefore, required to enable a more accurate assessment of the size and viability of the L. loeselii metapopulation in Lithuania.
New data on distribution and ecology of lichen Parmotrema stuppeum (Parmeliaceae, lichenized Ascomycota) in Belarus
Authors: Bely Pavel 
Published: June 2016

Abstract
The paper presents information about new localities of Parmotrema stuppeum, rare foliose lichen in Belarus. Both earlier known and new localities of the species are discussed. New data on the ecology of P. stuppeum in Belarus are provided.
Application of Sinusoidal Function and a 25–1Fractional Factorial Array in the Kinetics and Optimization Study of Gmelina Seed Oil Modified Alkyd Resin Synthesis
Authors: Uzoh Chigozie F. , Onukwuli Okechukwu D. 
Published: June 2016

AbstractAn overnight dry hard alkyd resin has been designed from non-drying gmelina seed oil (GSO). The study was enhanced through pseudo combined array (PCA) and a dynamic data processor (DDP). The GSO modified alkyd resin was synthesized through a two stage alcoholysis-esterification method using glycerol, phthalic and maleic anhydride. The DDP was designed for the conversion of the GSO acid functional group in the alkyd reactor on the basis of the third order kinetic model and sinusoidal function. Models describing the molecular properties (conversion, viscosity and molecular weight average) in terms of the process parameters were derived from multiple regression by integrating a 25–1fractional factorial array (FFA) in a central composite design (CCD) implemented with design expert. The fatty acid profile of the raw GSO was determined using GC-MS while structural elucidation of the raw GSO, chemically modified GSO and GSO based alkyd resins were determined using FTIR spectrometry. The synthesized alkyds show very good physic-chemico-mechanical properties. Specifically, the drying schedule shows that the GSO alkyd resin achieved a dry hard time of 8.3 h in presence of nano-ZnO pigment. The designed kinetic model was able to track the trajectory of the reaction motion such that the molecular properties falls within specification. The Optimum responses of 89.66 % conversion, viscosity of 293 cP and molecular weight average of 5,481 predicted, fall within the range suggested from the kinetic model. Correspondent experiments conducted with the predicted optimum conditions were in reasonable agreement with the predicted values.
Stimuli design for SSVEP-based brain computer-interface
Authors: Jukiewicz Marcin , Cysewska-Sobusiak Anna 
Published: June 2016

Abstract
The paper presents a process of stimuli design for SSVEP-based brain computer-interface. A brain computer-interface can be used in direct communication between a brain and a computer, without using muscles. This device is useful for paralyzed people to communicate with the surrounding environment. Design process should provide high accuracy recognition of presented stimuli and high user comfort. It is widely known how to make stimuli for BCI which are using high-grade EEG. Over recent years cheaper EEGs are becoming more and more popular, for example OpenBCI, which uses ADS1299 amplifier. In this article we review past works of other authors and compare it with our results, obtained using EEG mentioned before. We try to confirm that it is possible to use successfully OpenBCI in BCI projects.
Dual Port Antenna Combining Sensing and Communication Tasks for Cognitive Radio
Authors: Nachouane Hamza , Najid Abdellah , Tribak Abdelwahed , Riouch Fatima 
Published: June 2016

Abstract
Dynamic spectrum access has been proposed as the effective solution to overcome the spectrum scarcity issue, supported by cognitive radio technology. Sensing and communication functions are both the most important tasks in cognitive radio systems. In this paper, an antenna system combining sensing and communication tasks is proposed to be integrated into cognitive radio front-ends. The sensing task is performed by means of an ultra-wideband quasi-omnidirectional antenna. Whilst the communication task is ensured by using a narrowband antenna. Both antennas have been designed on the same layer of an FR4 substrate, for manufacturing cost constraint. Therefore, the isolation between them must take into consideration. The measured mutual coupling of less than -18 dB is achieved over the whole impedance bandwidth. The proposed sensing antenna covers a wide range frequency bands ranging from 2 to 5.5 GHz. While the communication antenna operates at 2.8 GHz, and by adding inductors to the antenna, the resonant frequency can be tuned from 2.6 to 2.7 GHz. The whole antenna system was designed, fabricated, and tested. Measurement and simulation results prove the feasibility of the proposed structure for cognitive radio applications.
Hierarchical Fast Selection of Intraframe Prediction Mode in HEVC
Authors: Siast Jakub , Stankowski Jakub , Domański Marek 
Published: June 2016

Abstract
In the new HEVC standard, there are 35 intraframe prediction modes. Therefore, real-time implementations need fast mode pre-selection to reduce the computational load of cost comparison for individual modes. In this paper, a simple technique is proposed to reduce the complexity of the Unified Intra Prediction by decreasing the mode candidate number evaluated in the Rough Mode Decision step. We call this approach hierarchical as we decrease stepwise the angles between the directions of the prediction modes that are tested. Obviously, the fast mode selection results in significant complexity reduction obtained at the cost of choosing a sub-optimum mode related to slightly reduced compression performance. In the paper, it is proposed how to calculate the trade-off between encoder complexity and compression performance, using the ratio of relative coding time reduction and average bitrate increase estimated for constant decoded video quality. Extensive experiments prove that this ratio is much higher for the proposed technique than for many other techniques from the references.
Performance of IP address auto-configuration protocols in Delay and Disruptive Tolerant Networks
Authors: Schoeneich Radosław O. , Sutkowski Patryk 
Published: June 2016

Abstract
At this moment there is a lack of research respecting Mobile Ad-hoc Networks (MANET) address assignment methods used in Delay Tolerant Networks (DTN). The goal of this paper is to review the SDAD, WDAD and Buddy methods of IP address assignment known from MANET in difficult environment of Delay and Disruptive Tolerant Networks. Our research allows us for estimating the effectiveness of the chosen solution and, therefore, to choose the most suitable one for specified conditions. As a part of the work we have created a tool which allows to compare these methods in terms of capability of solving address conflicts and network load. Our simulator was created from scratch in Java programming language in such a manner, that implementation of new features and improvements in the future will be as convenient as possible.
Particle Swarm Optimization Algorithm for Leakage Power Reduction in VLSI Circuits
Authors: Leela Rani V. , Madhavi Latha M. 
Published: June 2016

Abstract
Leakage power is the dominant source of power dissipation in nanometer technology. As per the International Technology Roadmap for Semiconductors (ITRS) static power dominates dynamic power with the advancement in technology. One of the well-known techniques used for leakage reduction is Input Vector Control (IVC). Due to stacking effect in IVC, it gives less leakage for the Minimum Leakage Vector (MLV) applied at inputs of test circuit. This paper introduces Particle Swarm Optimization (PSO) algorithm to the field of VLSI to find minimum leakage vector. Another optimization algorithm called Genetic algorithm (GA) is also implemented to search MLV and compared with PSO in terms of number of iterations. The proposed approach is validated by simulating few test circuits. Both GA and PSO algorithms are implemented in Verilog HDL and the simulations are carried out using Xilinx 9.2i. From the simulation results it is found that PSO based approach is best in finding MLV compared to Genetic based implementation as PSO technique uses less runtime compared to GA. To the best of the author’s knowledge PSO algorithm is used in IVC technique to optimize power for the first time and it is quite successful in searching MLV.
Flexible Neural Network Architecture for Handwritten Signatures Recognition
Authors: Połap Dawid , Woźniak Marcin 
Published: June 2016

Abstract
This article illustrates modeling of flexible neural networks for handwritten signatures preprocessing. An input signature is interpolated to adjust inclination angle, than descriptor vector is composed. This information is preprocessed in proposed flexible neural network architecture, in which some neurons are becoming crucial for recognition and adapt to classification purposes. Experimental research results are compared in benchmark tests with classic approach to discuss efficiency of proposed solution.
Development of Free Electron Lasers in Europe Local and Global Implications – 2016
Authors: Romaniuk Ryszard S. 
Published: June 2016

Abstract
Free electron laser FELs are built in Europe mainlyB as nondependent infrastructures, or as a development of synchrotron ones. They are constructed mainly in centres which have considerable experience with synchrotron light sources of the third generation like DESY, Trieste, INFN, etc. Advances in very energetically efficient superconducting linear accelerators for electron beams, like TESLA type, caused an abrupt development of FEL machines all over Europe. New generation of FELs emits light beam of extreme intensity, good parameters, in IR, VIS, UV, EUV and X-ray spectral regions. The machine construction teams comprise also of young active researchers from Poland. In particular, these is a considerable participation of M.Sc. and Ph.D. students from Warsaw University of Technology at building of FLASH I, FLASH II, and EXFEL machines. Unique experiences gathered at work with these large experiments result in development of these young teams, and their further engagement in new initiatives: laser, laser – accelerator, inertial, plasma, plasma – energy, etc. This is what we observe with satisfaction. However, due to the lack of large research infrastructures in Poland, we are not members of the infrastructure owner clubs. Our young researchers may take part in the initiatives only indirectly as members of cooperative teams from the leading countries. As a further consequence, there is also a confined access of Polish laser and accelerator researchers to some kinds of European infrastructure development projects now under realization within the H2020.
Cultivar effect on the sweet cherry antioxidant and some chemical attributes
Authors: Skrzyński Jan , Leja Małgorzata , Gonkiewicz Aleksander , Banach Przemysław 
Published: June 2016

Abstract
This research was carried out to evaluate the phenolic composition, antioxidant capacities, sugars and organic acids content of sweet cherry cultivars (Bianca, Burlat, Johanna 1, Johanna 2, Kordia, Kunzes Kirsche, Merton Premier, Napoleon, Orleans, Regina, Rivan, Schneiders Spate Knorpelkirsche, Summit, Trebnitzer Lotkirsche) grown in Poland. Significant differences were observed between tested cultivars for all studied parameters.
The sum of total soluble solids ranged from 14.3 (‘Burlat’) to 20.9 g 100 g−1 FW (‘Bianca’) and that of organic acids from 0.43 (‘Burlat’) to 0.76 g 100 g−1 FW (‘Napoleon’). Fruit of Bianca cultivar showed the highest levels of anthocyanin (108.5 mg 100 g−1 FW) while ‘Napoleon’ and ‘Kunzes Kirsche’ contained the lowest levels (1.5 and 1.8 mg 100 g−1 FW, respectively). Total phenolic contents ranged from 101 (‘Napoleon’) to 558 (‘Bianca’) mg 100 g−1 FW, tartaric esters from 26.2 (‘Summit’) to 66.5 (‘Bianca’) mg 100 g−1 FW and flavonoids from 7.9 (‘Summit’) to 49.1 (‘Bianca’) mg 100 g−1 FW. Bianca cultivar has also the highest free radical scavenging activity assayed by ABTS and DPPH methods 88 and 90% respectively.