bluuebunny/crossref_metadata_2025_split huggingface dataset:
Early tissue formation on whole‐area osteochondral defect of rabbit patella by covering with fibroin sponge
Authors: Hirakata Eiichi , Tomita Naohide , Tamada Yasushi , Suguro Toru , Nakajima Masaaki , Kambe Yusuke , Yamada Keisuke , Yamamoto Koji , Kawakami Masahiro , Otaka Akihisa , Okumura Hideo , Suzuki Shigehiko 
Published: March 2016

ABSTRACTLarge osteochondral defects have been difficult to repair via tissue engineering treatments due to the lack of a sufficient number of source cells for repairing the defect and to the severe mechanical stresses affecting the replacement tissue. In the present study, whole‐area osteochondral defects of rabbit patella were covered and wrapped with a fibroin sponge containing chondrocytes, with or without Green Fluorescent Protein (GFP) transgenic marking, on the surface facing the osteochondral defect. Five of eight osteochondral defects that were covered with the chondrocyte‐seeded fibroin sponges showed hyaline cartilage‐like repair containing no fibroin fragments at 6 weeks after surgery. The repaired tissue showed a layer formation, which showed intensive safranin‐O and toluidine blue staining, and which showed positive type II collagen immunostaining. The average surface coverage of the repaired cartilage was 53%. On average, 48% of the cells in the repaired tissue were derived from GFP transgenic chondrocytes, which had been seeded in the fibroin sponge. The fibroin‐sponge covering had the potential to allow the early repair of large osteochondral defects. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 1474–1482, 2016.
A procedure for the extraction of a nonlinear microwave GaN FET model
Authors: Avolio Gustavo , Vadalà Valeria , Angelov Iltcho , Raffo Antonio , Marchetti Mauro , Vannini Giorgio , Schreurs Dominique 
Published: March 2016

SummaryIn this paper, we describe an extraction procedure of nonlinear models for microwave field‐effect transistor (FET). We use a nonlinear model available in commercial CAD tools, and we extract the parameters by combining direct extraction and numerical optimization. We determine a first estimate of the model parameters by few DC and S‐parameter measurements. Next, we refine the parameters by optimization against low‐frequency and high‐frequency vector‐calibrated large‐signal measurements gathered with a Large‐Signal‐Network Analyzer (LSNA). As case study we consider a 0.25 × 200 µm2 GaN FET on SiC for power amplifier applications. Ultimately, we want to show that a good accuracy level can be achieved while minimizing the extraction effort and that an accurate model can be built and suitably tailored depending on the final application. Copyright © 2016 John Wiley & Sons, Ltd.
Emotional appeal in recruitment advertising and applicant attraction: Unpacking national cultural differences
Authors: Han Jing , Ling Juan 
Published: March 2016

SummaryWe investigated the impact of the type of emotional appeal (ego‐focused vs. other‐focused) used in recruiting advertisements on applicant attraction to firms through two experimental studies across three countries (the United States, China, and Singapore). In Study 1, we made a traditional cultural comparison between the United States and China, whose dominant cultural values are characterized by individualism and collectivism, respectively. We found applicants in the United States were more strongly attracted to firms whose recruiting advertisements were based on an ego‐focused emotional appeal, while applicants in China were more attracted to firms that used ads with an other‐focused emotional appeal. Study 2 was conducted in bicultural Singapore. We primed bicultural applicants to be either the individualistic or collectivistic aspect of their cultural heritage. Applicants with individualist priming were attracted to recruiting advertisements with an ego‐focused emotional appeal, whereas applicants with collectivist priming were attracted to advertisements with an other‐focused emotional appeal. In addition, both studies revealed that a job applicant's regulatory focus (promotion vs. prevention) mediated the influence of national culture on the relationship between type of emotional appeal and applicant attraction to firms. Practical implications and suggestions for future research also are discussed. Copyright © 2016 John Wiley & Sons, Ltd.
Navigating uneven terrain: The roles of political skill and LMX differentiation in prediction of work relationship quality and work outcomes
Authors: Epitropaki Olga , Kapoutsis Ilias , Ellen B. Parker , Ferris Gerald R. , Drivas Konstantinos , Ntotsi Anastasia 
Published: March 2016

SummaryDrawing from social/political influence, leader–member exchange (LMX), and social comparison theories, the present two‐study investigation examines three levels of LMX differentiation (i.e., individual‐level, meso‐level, and group‐level LMX differentiation) and further tests a model of the joint effects of political skill and LMX differentiation on LMX, relative LMX, and employee work outcomes. In Study 1, we used data from 231 employees and found support for the interactive effect of political skill and individual perceptions of LMX differentiation on LMX quality. We also found partial support for the moderating role of individual‐level LMX differentiation on the indirect effects of political skill on self‐rated task performance and job satisfaction via LMX. In Study 2, we used data from 185 supervisor–subordinate dyads and examined both meso‐level and group‐level LMX differentiation via a multilevel moderated mediation model. Results supported the moderating role of group‐level LMX differentiation and group mean LMX on the indirect effects of political skill on supervisor‐rated task performance and contextual performance/citizenship behavior as well as job satisfaction via relative LMX. Overall, the results suggest that politically skilled employees reap the benefits of LMX differentiation, as they enjoy higher absolute LMX and relative (i.e., to their peers) LMX quality. Copyright © 2016 John Wiley & Sons, Ltd.
Loading rates during walking in adolescents with type II osteonecrosis secondary to pelvic osteotomy
Authors: Wang Ting‐Ming , Wu Kuan‐Wen , Chen Ching‐Ru , Hong Shih‐Wun , Lu Tung‐Wu , Kuo Ken N. , Huang Shier‐Chieg 
Published: March 2016

ABSTRACTAlthough Pemberton osteotomy has shown a high success rate even in older children, the occurrence of osteonecrosis (ON) remains one of the most severe complications, leading to premature osteoarthritis. Patients with type II ON are characterized by a valgus deformity of the proximal femur with altered musculoskeletal conditions, affecting the ability to attenuate or sustain the impulsive loading from the ground reaction force. It remains unclear whether these conditions also predispose these patients to harmful impulsive loadings. This study aimed to bridge the gap by measuring the loading rates in the lower limbs during level walking in adolescents who were treated during their infancy for unilateral developmental dysplasia of the hip by a pelvic osteotomy, with or without having developed type II ON. Patients with type II ON were found to display increased loading rates, not only at both the affected and unaffected hip, but also at other joints of the affected limb during level walking when compared to patients without ON changes (p < 0.05). These results suggest that patients with type II ON may be at a higher risk of developing premature hip osteoarthritis that is closely related to abnormal loading rates during gait. It is suggested that regular monitoring of joint loading rates in patients with type II ON is necessary for early identification of damaging loadings, and that early intervention aimed at reducing these loadings should be considered. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:2199–2206, 2016.
Suitable additives for vegetable oil‐based automotive shock absorber fluids: an overview
Authors: Bongfa Binfa , Syahrullail S. , Abdul Hamid M. K. , Samin P. M. 
Published: March 2016

AbstractFormulation of a cost‐effective, high‐performance and eco‐friendly lubricant, largely depends on the base oil quality, then the selection of suitable additives and their proportions. Vegetable oils, identified to be eco‐friendly, renewable, future‐available and cost‐effective treasures for lubricant formulation, apart from processing, will rely much on suitable additives to meet the performance requirements for automotive shock absorber (ASA) fluids. Additives that will guarantee performance, longevity and eco‐friendliness of formulated vegetable‐based functional fluids have to be uncommonly effective, resistant to depletion, non‐toxic and highly biodegradable. Their selection in these regards will require skills and experience, which will harness the various arms of synergism as effective tools to succour the known weaknesses of the base oil. This is a review on additives that could be used in formulation of vegetable oil‐based (ASA) fluids. The outcome shows that there are customary and novel additives that are suitable for formulating vegetable oil‐based ASA fluids. Copyright © 2016 John Wiley & Sons, Ltd.
Quaternary Polymer Electrolytes Containing an Ionic Liquid and a Ceramic Filler
Authors: Sharova Varvara , Kim Guk‐Tae , Giffin Guinevere A. , Lex‐Balducci Alexandra , Passerini Stefano 
Published: March 2016

In this work, the individual and combined effects of an ionic liquid 1‐butyl‐1‐methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and ceramic filler silicon dioxide on the thermal and electrochemical properties of poly(ethylene oxide) electrolytes have been investigated. The electrolyte containing both components has the lowest glass transition (−60 °C) and melting temperatures (27 °C), the highest conductivity at any investigated temperature, and the highest limiting current density (at 40 °C). This solid polymer electrolyte also exhibits the best long‐term cycling performance in Li/LiFePO4 cells.
image
Distally based subcutaneous veins for venous insufficiency of the reverse posterior interosseous artery flap
Authors: Özalp Burhan , Elbey Hüseyin , Aydin Atakan , Özkan Türker 
Published: March 2016

BackgroundThe reverse posterior interosseous artery flap (PIAF) provides soft, thin, and pliable tissue for upper extremity reconstruction without sacrificing any major arteries of the hand. The authors performed a new technique that included one extra distally based subcutaneous vein within the pedicle to diminish venous insufficiency and they aimed to present the results of reconstruction with this technique.Patients and MethodsTwelve patients with a mean age of 30 years (range 5–52 years) underwent reverse PIAF surgery. The defects were located on the hand and wrist, with a mean area of 57.8 cm2 (range 20–99 cm2). After the skin between the distal edge and the pivot point of the flap was elevated, the most reliable subcutaneous vein was chosen, chased, and included within the flap.ResultsThe average size of the PIAF was 6 × 5 cm to 12 × 9 cm (mean area: 64.4 cm2) and the median follow‐up time was 13 months (range 4–16 months). The mean quick Disabilities of the Arm, Shoulder and Hand (DASH) score was 21.4, indicating a low degree of disability. Of the 12 patients, ten were very satisfied and two were satisfied with the result of the reconstruction. All but one flap survived completely. One flap was nearly totally lost due to arterial insufficiency after hemodialysis. We observed no venous congestion or insufficiency in the patients.ConclusionsSubcutaneous veins may be reliable and useful for overcoming major drawbacks associated with reverse flow posterior interosseous artery flap and for diminishing flap loss due to venous insufficiency. © 2016 Wiley Periodicals, Inc. Microsurgery 36:384–390, 2016.
An active wideband reference target for the calibration of ground to air radar systems
Authors: Pienaar Monique , Odendaal Johann W. , Cilliers Jacques E. , Kloke Kevin H. , Joubert Johan 
Published: March 2016

ABSTRACTThe radar cross section (RCS) of passive calibration targets is relatively low, which leads to a commensurate increase in the uncertainty of the radar's calibration. To address this deficiency, an active radar calibration (ARC) target was developed, which was mounted on a small remote controlled tri‐copter and used for radar calibration. Results are presented for this relatively small, light weight and cost effective airborne ARC, which is suitable for the calibration of a ground to air RCS measurement system. The static RCS characteristics of the airborne ARC target were measured in a compact range and compared to outdoor measurements with the ARC target mounted on the tri‐copter. The airborne capability of the calibration target was used to reduce the effects of multi‐path and clutter. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1041–1044, 2016
Investigation of sampling frequency impact on optical DP‐MQAM generation
Authors: Ragheb Amr M. , Fathallah Habib 
Published: March 2016

ABSTRACTThe complementary integration of high spectrally efficient modulation formats, coherent receivers, and advanced electronic subsystems, has resulted in a revolution in the spectral efficiency of optical communications. This letter experimentally investigates the impact of varying the characteristics of high speed CMOS‐DAC on the performance of optical DP‐MQAM systems. We particularly consider two operating conditions, referred as over‐ and under‐sampling. In the former case, we relax the CMOS circuit; however limit the maximum transmitted baud rate (i.e., 32 GBd for 64 GSa/s). In the second regime, we stress the DAC in order to generate less than two samples for each symbol, hence increase the transmitted baud rate at the expense of higher signal bandwidth. Under the first regime, our experimental results show a measured EVM and BER of 4.7%rms and 5 × 10−2, respectively, for DP‐128QAM/32GBd. In the second regime, we obtain a variable baud rate ranging from 36 up to 56 GBd using a sampling ratio starting from 1.8 and decreasing down to 1.14, respectively, with maximum modulation order of QPSK at 56 GBd. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1128–1131, 2016
An enhanced fraction polynomial microwave filter modeling method exploiting space mapping
Authors: Guo Fangzhou , Xia Lei , Deng Xida , Xu Ruimin 
Published: March 2016

ABSTRACTA method for bandpass filter modeling taking advantage of the space mapping (SM) is presented in this letter. The coarse model is constructed by the fraction polynomial approximating the data from high‐fidelity simulations, and the approach of obtaining the coefficients is specifically designed to avoid rapidly increasing complexity as the data adds. The surrogate model, which the accuracy is further enhanced, is established utilizing SM. In this work, the SM process allows a flexible tradeoff between accuracy and computational cost. The proposed model can be operated with a relatively wide variation of design variables and is practical for arbitrary bandwidth filter. Couple line filters and an ultrawideband (UWB) radial‐stub‐loaded filter are modeled using the proposed modeling method to validate its merits and the result shows a good performance. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1159–1163, 2016
A new approach to design compact tunable BPF starting from simple LPF topology using a single T‐DGS‐resonator and ceramic capacitors
Authors: Boutejdar A. 
Published: March 2016

ABSTRACTIn this article, a novel very compact DGS lowpass filter (LPF) and reconfigurable bandpass filter are proposed. The designed filter consists of one T‐DGS resonator, which is excited by 50 ohm microstrip line, placed on top layer between the input and output of the proposed structure. The selected filter topology has several advantageous compared with the other previous works such as the compactness and its simple design. The addition of compensated patch capacitor improves the low insertion loss and ultra‐wide stopband with 15 dB attenuation from 2.2 to 3.6 GHz. The size of the proposed single T‐DGS LPF‐BPF is less as (0.023 λg × 0.044 λg) with λg = 0.263 m. The tunable bandpass filter (BPF) is extracted from LPF topology using variable Chip Monolithic Ceramic Capacitors and J‐inverter technique. Finally, the measured, EM‐ and field simulation results are presented and discussed. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1142–1148, 2016
Circularly polarized monopole slot antenna for UHF RFID reader
Authors: Cao Rong , Yu Shun‐Chuan 
Published: March 2016

ABSTRACTThis article proposes a circularly polarized monopole slot antenna which is suitable for ultra‐high frequency (UHF) radio frequency identification (RFID) reader. In this antenna design, a meandering slot is being placed in the ground plane to produce good circularly polarized radiation characteristics, and the microstrip line feed can be adjusted to achieve good impedance matching. Measurement results showed that the 10‐dB return loss bandwidth of the antenna is 10.3% (0.857–0.95 GHz), and the 3‐dB axial ratio bandwidth of the antenna 7.4% (0.878–0.945 GHz). The maximum gain and efficiency of the antenna is 2.09 dBic and 76%, respectively. The overall antenna size is 120 × 80 × 0.8 mm3. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1102–1105, 2016
Design of a compact mimo/diversity antenna for UWB applications with modified TH‐like structure
Authors: Kumar Raj , Ram Krishna R. V. S. , Kushwaha Nagendra 
Published: March 2016

ABSTRACTA compact, ultra wideband (UWB) antenna system for multi‐input multi‐output (MIMO)/diversity applications is proposed. The antenna system is a microstrip structure with two similar triangular shaped radiating elements and a common ground plane. The radiating elements are excited by tapered feed for better impedance matching. A combination of T and H‐shaped metallic stub is added in the ground plane to increase the isolation between the two radiators. The overall dimensions of the antenna system are 46 mm × 32.6 mm × 1.6 mm. The measured impedance bandwidth (reflection coefficient <−10 dB) is from 1.8 GHz to well beyond 13 GHz which covers the entire UWB region. A measured isolation of about 20 dB is achieved in the UWB region. The diversity gain of the antenna system is close to 10 dBi and the envelope correlation coefficient is below 0.006 in the operating band. The proposed antenna is suitable for MIMO/diversity applications where ultra wide impedance bandwidth with good isolation is needed. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1181–1187, 2016
Design of LPF using suspended substrate microstrip lines as high‐Z sections for stopband extension
Authors: Feng Xin , Zhang Yonghong , Zhu Guide , Fan Yong , Joines William T. , Huo Liu Qing 
Published: March 2016

ABSTRACTThis article introduces the use of suspended substrate microstrip lines (SSMLs) as high‐Z sections in the design of lowpass filters (LPFs) to extend the stopband. The SSMLs are formed by etching slots on the backside of microstrip lines and placing the substrate on an aluminum base with grooves that cover these slots. The higher characteristic impedance property of SSMLs brings about not only shorter length for high‐Z lines but also a larger high‐to‐low impedance ratio, thus deepening the stopband suppression and shifting the spurious passband away. As a demonstration, a wide stopband LPF combining this structure with hammer‐shaped stubs is designed, fabricated, and measured. The 20 dB stopband is obtained from 1.45 to 11.77 GHz. Compared with reported LPFs, this shows the widest fractional bandwidth (FBW) of 156% without sacrificing other performances. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1204–1207, 2016
Self‐gated cardiac cine imaging using phase information
Authors: Seo Hyunseok , Kim Dongchan , Oh Changheun , Park HyunWook 
Published: March 2016

PurposeTo obtain multiphase cardiac cine images with high resolution, a novel self‐gating method for both cardiac and respiratory motions is proposed.MethodsThe proposed method uses the phase of projection data obtained from a separate axial slice to measure cardiac and respiratory motion, after the acquisition of every k‐space line in the image plane. Cardiac motion is estimated from the phase of the projection data passing through the aorta, which is amplified by superior–inferior directional bipolar gradients, whereas respiratory motion is estimated from the phase of the left–right directional projection data of the abdomen. To verify the proposed self‐gating method, a simulation and in vivo steady state free precession cardiac imaging were performed.ResultsThe proposed method provides high resolution multiphase cardiac cine images. Using the proposed self‐gating method, the phase variation of the projection data offers information about cardiac and respiratory motions that is equivalent to external gating devices.ConclusionThe proposed method can capture time‐resolved cardiac and respiratory motion from the phase information of the projection data. Because the projection data is obtained from a separate gating slice, the self‐gating signals are not affected by imaging planes. Magn Reson Med 77:1216–1222, 2017. © 2016 International Society for Magnetic Resonance in Medicine
Selection criteria for surgical treatment of pudendal neuralgia
Authors: Charlotte Waxweiler , Sebastian Dobos , Viviane Thill , Luc Bruyninx 
Published: March 2016

AimsPudendal neuralgia is the clinical expression of a chronic compression of the pudendal nerve. The diagnosis is based on a set of five criteria, called Nantes criteria. Four of the criteria are clinical and the last requires evaluation of the anesthetic response to CT‐guided infiltration of the pudendal nerve. The aim of our study is to evaluate the relevance of anesthetic test response to select patients for surgery, and whether this criterion can be used to predict its success.MethodsRetrospective analysis of a cohort of 34 patients undergoing surgical treatment. In our cohort, we included six patients with negative CT‐guided pudendal nerve infiltration test.ResultsOf the 28 patients that met all five Nantes criteria, 64% (18 patients) responded well to surgery. In contrast, 100% of the six patients with a negative anesthetic test failed to show an amelioration of symptoms after surgical treatment (P = 0.006). In our analysis, there was no significant difference in surgery response when men were compared to women (P = 0.387), when procedure was unilateral or bilateral (P = 0.562), or when duration of symptoms was long (P = 0.412). We observed a difference in terms of age between the group of responders and non‐responders, although this difference did not reach the threshold of significance (P = 0.216).ConclusionsThe selection of candidates for surgery should always include a single diagnostic anesthetic injection of the pudendal nerve, as the fifth of the Nantes criteria is an effective predictor of the success of surgery. Neurourol. Urodynam. 36:663–666, 2017. © 2016 Wiley Periodicals, Inc.