bluuebunny/crossref_metadata_2025_split huggingface dataset:
Facet preparation of polymer based optical wavelength filter using mechanical/chemical treatment technique
Authors: Ibrahim M. H. , Kassim N.M. , Mohammad A. B. , Supa'at A. S. M. 
Published: March 2012

AbstractA photodefinable polymer of benzocyclobutene (BCB 4024‐40) from Dow Chemical™ has been demonstrated as a waveguiding material in a new structure of optical wavelength filter. The filter structure is based on the combination of restricted interference and general interference schemes of multimode interference technique. The filter is capable in optical wavelength filtering particularly for 1550/1310 nm. Because of the photosensitive nature of the polymer, the chemical wet‐etching fabrication technique needs to be adopted. For the purpose of laser coupling, a new facet polishing technique has been proposed and it is based on the combination of mechanical and chemical polishing. It is shown that the fabricated device works well with improved crosstalk of −15.7 dB (1310 nm) and −21.8 dB (1550 nm). © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1301–1313, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26781
Loop‐loaded monopole antenna with miniaturization and dual‐band characteristics
Authors: Wu Wei‐Jun , Yin Ying‐Zeng , Zhang Zhi‐Ya , Zuo Shao‐Li , Xie Jiao‐Jiao 
Published: March 2012

AbstractA novel miniaturized dual‐band monopole antenna loaded with two types of loops is presented. The split loop is loaded at the center of the monopole for dual‐band operation and the rectangular loop loaded at the top is for miniaturization. The novel miniaturization technique is used as a self resonant topology. The monopole below its resonant frequency is known to possess a capacitive reactance and the loop below its resonant frequency has an inductive reactance. So an inductive loop is used to match a below‐resonant monopole for miniaturization. As an example of this principle, a miniaturized dual‐band antenna prototype for WLAN applications is designed, fabricated, and tested. Measured results show that the antenna offers higher gains and better efficiencies than the unloaded monopole. The radiation patterns are seen to be unaffected by the presence of the top loaded loop. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1236–1239, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26784
OpenMP parallelized MOD solution of the time‐domain EFIE accelerated by the ACA algorithm
Authors: Shi Yan , Jin Jian‐Ming 
Published: March 2012

AbstractA parallelized marching‐on‐in‐degree (MOD) method accelerated by the adaptive cross approximation (ACA) algorithm is developed to solve the time‐domain electric‐field integral equation (TDEFIE) for the analysis of transient electromagentic scattering from a three‐dimensional conducting object of arbitrary shape. By using the entire‐domain temporal basis functions to expand the temporal variable of the TDEFIE and applying the Galerkin temporal testing procedure, the TDEFIE‐MOD algorithm overcomes the late‐time instability that often occurs in the time‐domain solutions. To exploit the rank‐deficient nature of the off‐diagonal subblocks in the TDEFIE‐MOD impedance matrix, the ACA algorithm is used to accelerate the matrix‐filling and matrix–vector multiplication operations. An OpenMP parallelization scheme is applied to further speed up the MOD‐ACA algorithm on a shared‐memory computer system. Numerical results are presented to illustrate the good computational performance of the proposed algorithm. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1206–1212, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26785
Novel dual‐band bandstop filter with controllable stopband frequencies
Authors: Zhang Xiu Yin , Huang Xun , Zhang Hong‐Lin , Hu Bin‐Jie 
Published: March 2012

AbstractThis article presents a novel dual‐band bandstop filter (BSF) with controllable stopband frequencies and sharp skirt selectivity.The proposed filter consists of a main transmission line and stub‐loaded resonators coupled to the main line. The stub‐loaded resonator has the advantage that the even‐mode resonant frequencies can be flexibly controlled by changing the stub length without affecting the odd‐mode resonant frequencies. Using this configuration, the stopband frequencies can be easily tuned to desired values. Based on the proposed idea, a third‐order dual‐band BSF is implemented operating at 2.4 and 3.5 GHz. Comparisons of experimental and simulated results are presented and good performance is observed. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1203–1206, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26786
Surface acoustic wave phononic crystal device fabricated by femtosecond laser ablation
Authors: Gertus Titas , Mikutis Mindaugas , Každailis Paulius , Rimeika Romualdas , Ciplys Daumantas , Smilgevičius Valerijus 
Published: March 2012

AbstractFabrication of surface acoustic wave (SAW) based phononic crystal (PC) device by femtosecond laser micromachining has been demonstrated. The thin‐film interdigital SAW transducers of 50 μm wavelength together with PC structure (1‐ and 2‐dimensional) of 25 μm period were fabricated on the YZ lithium niobate crystal surface by femtosecond pulse selective ablation of an aluminum layer. The device S parameter measurements revealed different influence of 1D and 2D PC structures on the SAW propagation. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1286–1287, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26789
Ka/S dual‐band antenna for satellite communication
Authors: Xu Zhi , Liang Changhong 
Published: March 2012

AbstractA novel space‐borne Ka/S dual‐band antenna is proposed in this article, in which the waveguide TE21‐mode automatic tracking is used for the Ka‐band.The two bands are common in structure but independent from each other electrically, thus the installation space specifications of the satellite platform can be met. The antenna design procedures as well as the measurement results are presented. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1246–1251, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26791
Hexagonal ferrite‐piezoelectric composites for dual magnetic and electric field tunable 8–25 GHz microstripline resonators and phase shifters
Authors: Tatarenko A. S. , Murthy D. V. B. , Srinivasan G. 
Published: March 2012

AbstractMicrowave magnetoelectric (ME) effects over 8–25 GHz have been studied in bilayers of single crystal Y‐type hexagonal ferrite Ba2Zn2Fe12O22 and polycrystalline lead zirconate titanate (PZT) or single crystal lead magnesium niobate–lead titanate (PMN–PT). The bilayers are made by epoxy bonding or eutecting bonding the ferrite and piezoelectric. The strength of ME interactions A has been measured from data on electric field E tuning of magnetic modes in the ferrite. The electric field produces a mechanical deformation in the piezoelectric and results in a shift in the ferromagnetic resonance. Bilayers of ferrite/PMN–PT have A = 10 MHz cm/kOe and is an order of magnitude higher than for ferrite‐PZT. The ferrite/PMN–PT resonators could be tuned by 120 MHz with E = 12 kV/cm. Data on differential phase shift versus E indicate a differential phase shift of 50° for E = 12 kV/cm, a linear variation in the phase shift with E and an insertion loss of 4–8 dB. The bilayers are of interest for 8–25 GHz dual E‐ and H‐tunable ferrite resonators and phase shifters. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1215–1218, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26793
Calibration methodology for a 3D radiation pattern set‐up of probe‐fed millimeter‐wave antennas
Authors: Titz Diane , Kyrö Mikko , Ferrero Fabien , Ranvier Sylvain , Luxey Cyril , Brachat Patrice , Jacquemod Gilles , Vainikainen Pertti 
Published: March 2012

AbstractIn this article, we present a radiation pattern measurement setup for probe‐fed millimeter‐wave antennas and the associated calibration procedure. Compared with other existing facilities, our setup has one major innovation: it is composed of two rotating arms allowing measuring the radiated field of a probe‐fed antenna over the quasi‐3D sphere. The calibration challenges and issues encountered at 60 GHz are thoroughly described. We especially detail a specific calibration procedure to improve the accuracy of the measurements. To illustrate our methodology, the 3D radiation pattern measurement of a novel monopole‐type antenna etched over a glass substrate is presented. Experimental results versus simulation results are compared. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1183–1189, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26795
A triple‐band WLAN/WiMAX printed monopole antenna for MIMO applications
Authors: Foudazi Ali , Mallahzadeh Alireza , Nezhad Sajad Mohammad Ali 
Published: March 2012

AbstractA triple‐band multi‐input multi‐output (MIMO) antenna is presented.The proposed antenna consists of a C‐shaped monopole antenna that provides dual‐band resonant antenna. By protruding an L‐shaped parasitic strip on the ground plane, a third band as well as enhancement of the isolation between two ports in MIMO array is achieved. The proposed antenna can cover 2.1–2.6, 3.3–4, and 5.4–6 GHz, which are allocated for WLAN and WiMAX applications. The proposed triple‐band antenna structure is used in different two‐element MIMO arrays. Simulation results show that the S11, S12, and S22 of the MIMO arrays are independent of the position of the two‐element. The results show good S‐parameters, high peak gain and radiation efficiency, and stable radiation patterns among the triple‐band coverage. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1321–1325, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26799
Two‐channel fiber microcavity strain sensor based on fiber loop ring‐down spectroscopy technology
Authors: Jiabin Shang , Weigang Zhang , Shilei Wei , Hao Zhang 
Published: March 2012

AbstractIn this article, a two‐channel fiber microcavity strain sensor based on fiber loop ring‐down spectroscopy technology is proposed and implemented. This fiber loop ring‐down strain sensor uses time division multiplexing technique, which involves two fiber loops. These two fiber‐loop resonators share a same pulsed laser source and a same photodetector. The microcavity is directly inscribed in a segment of 1060 nm single mode fiber through high‐frequency CO2 laser pulses illumination. As a sensor unit, the two fiber microcavities accessible to the fiber‐loop resonators are pasted onto the upper and lower surface of a cantilever beam to realize the strain sensing by measuring the ring‐down time of the pulse laser. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1305–1309, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26800
High performance WLAN balun using integrated passive technology on SI‐GaAs substrate
Authors: Wang Cong , Kim Nam‐Young 
Published: March 2012

AbstractAn integrated passive device (IPD) technology has been developed in order to achieve lower cost, further miniaturization, and higher performance in microwave devices applied to the front‐end modules of wireless communication system.This article describes a compact wireless local area network (WLAN) balun suitable for wireless system application using IPD technology based on an SI‐GaAs substrate. It shows very good RF performances in spite of its small chip size and low cost, compared to those found in recent literature. A small outline transistor packaging technology with a three‐dimensional electromagnetic simulation is reported. The fabricated WLAN balun has an insertion loss of < −0.25 dB and a return loss of > −25 dB. The phase imbalance was measured to be less than 3° and the amplitude imbalance is less than 0.5 dB; its dimensions are 800 μm × 700 μm × 200 μm. This compact WLAN balun can be used for a variety of applications in the microwave field. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1301–1305, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26801
Alternating‐direction explicit algorithms for crank–nicolson‐based FDTD methods
Authors: Fu Ping , Chen Ru‐Shan 
Published: March 2012

AbstractThis article proposes a new unconditionally stable explicit finite‐difference time‐domain (FDTD) scheme for 3D Maxwell equation.The proposed scheme is based on alternating‐direction explicit method and Crank–Nicolson (CN)‐based FDTD method, and we present two versions of the proposed method. Numerical stability and dispersion analysis of the new algorithm were also presented. The results by the proposed method are compared with the results by the conventional FDTD method, alternating‐direction implicit method, and CN‐based FDTD method. As a result, it is confirmed that the proposed method is unconditionally stable and the efficiency is superior to the conventional method if the minimum cell size in the computational domains is required to be much smaller than the wavelength. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1269–1273, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26802
Broadband UHF RFID tag antenna with a rectangular‐loop feed and additional patches
Authors: Tang Zhi‐jun , Zhan Jie , Xi Zai‐fang , He Yi‐gang 
Published: March 2012

AbstractA novel tag antenna with a rectangular‐loop feed, a bent meandered strip and additional patches is designed and analyzed in ultra high frequency (UHF) radio frequency identification (RFID) bands to provide broadband, high gain, and size‐reduction performance simultaneously. It is designed to operate at UHF RFID bandwidths, with resonant frequencies of 842, 868, and 915 MHz, respectively. The dimension of the antenna with resonant frequencies of 915 MHz is around 78 × 23 mm2, which shows near linear phase characteristics. Simulated and measured results show the proposed antenna can obtain 100 MHz bandwidth under the condition of voltage standing wave ration less than 2 and 1.6 dBi gain for worldwide UHF RFID bands. In addition, the antenna provides a good radiation pattern. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1234–1236, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26804
Monitoring in situ Electrochemical Crosslinking in Nanostructured Precursor Polymer Films by EC‐SPR Spectroscopy
Authors: Jiang Guoqian , Huang Chengyu , Baba Akira , Advincula Rigoberto 
Published: March 2012

AbstractThe optical/electrochemical and crosslinking properties of polycarbazole LbL films is studied using EC‐SPR spectroscopy. The in situ electrochemical crosslinking and doping/de‐doping properties are monitored for several different layered film structures. P4VPCBZ and PCEMMA are used as precursor polyelectrolytes, PAA and PDADMAC as non‐crosslinkable polyelectrolytes, which are effective barrier layers for electron transfer. The changes in reflectivity and charge during CV illustrates that quantitative control of electrochemical crosslinking and doping/de‐doping can be achieved by varying the composition of the precursor and counter‐polyelectrolyte layers. The method may provide new opportunities for basic studies of model conjugated polymer systems and for electrooptic device applications.magnified image
Urinary Incontinence: Prevalence, Risk Factors, and Impact on Health Related Quality of Life in Saudi Women
Authors: Altaweel Waleed , Alharbi Mohannad 
Published: March 2012

AbstractAimsThe aims of this study were to determine the prevalence, risk factors, and impact upon health related quality of life (HRQL) of urinary incontinence in Saudi women.MethodsWe performed a clinic‐based cross‐sectional survey. 6,600 women aged 20 years and older were selected. The bother of urinary incontinence symptoms was assessed using the Arabic version of the short form of Urogenital Distress Inventory (UDI‐6) questionnaire. We measured the impact of urinary incontinence on HRQL using the Incontinence Impact Questionnaire (IIQ‐7).ResultsThe overall prevalence of urinary incontinence in our study was 29%. The prevalence of urinary incontinence according to its type was 50% stress urinary incontinence, 28% urgency urinary incontinence, and 22% mixed urinary incontinence. Older age, obesity, large baby birth weight, high parity, caesarean delivery, vaginal delivery, and diabetes were significant risk factors. Less than 10% of the women in this study reported a significant effect of urinary incontinence on their HRQL. In our study population, 9% sought medical care.ConclusionsTwenty‐nine percent of the women in Riyadh suffered from urinary incontinence. Diabetes is the most significant factor. Urinary incontinence affects women's HRQL. Most of the women did not seek medical care. We consider our study as an important step to start the plans for early detection, and treating urinary incontinence in Saudi Arabia. Neurourol. Urodynam. 31:642–645, 2012. © 2012 Wiley Periodicals, Inc.
The psychology of LUTS: ICI‐RS 2011
Authors: Cortes E. , Sahai A. , Pontari M. , Kelleher C. 
Published: March 2012

AbstractIntroductionThere is undoubtedly a link between lower urinary tract and psychological symptoms. The association is likely to be multifactorial, but whether psychological symptoms are causal or coincidental remains unknown.MethodsThis paper is a result of a think tank session conducted at the ICI‐RS meeting 2011 in Bristol and a PubMed search on the subject of psychology and LUTS.ResultsRecent population studies have shown that LUTS are prevalent and that psychological morbidity is related to severity of LUTS. Evidence suggests that the psychological status of patients plays a significant role in their symptoms perception. Animal studies have shown the importance of programming and emotional stress on subsequent psychological problems. The link between early events in childhood and resulting LUTS in later life remains uncertain. The possibility that for some patients urinary symptoms could be part of a somatizing process requires further consideration. The possibility that patients' symptoms could be part of a somatization process needs further consideration. Neuroendocrine and neuroimaging studies suggest pathways that may link psychological and lower urinary tract functioning from early life, opening new avenues to better understand the treatment of both symptom groups.ConclusionWhilst psychological morbidity will result from any distressing chronic medical condition the possibility of causation, and or maintenance of LUTS through psychological causes requires further research. It is important to recognize that amongst our younger and older patients suffering with LUTS a significant psychological component exists. Failure to address this may lead to incomplete assessment and consequently inadequate treatment. Neurourol. Urodynam. 31:340–343, 2012. © 2012 Wiley Periodicals, Inc.
What determines whether a patient with LUTS seeks treatment?: ICI‐RS 2011
Authors: Apostolidis Apostolos , de Nunzio Cosimo , Tubaro Andrea 
Published: March 2012

AbstractAimsTo review the known determinants of healthcare‐seeking behavior for LUTS and address unmet needs and future research priorities.MethodsThe PubMed literature was searched for currently known factors affecting treatment seeking for LUTS, OAB, and incontinence in men and women.ResultsFurther to the great variation in rates for treatment seeking for LUTS in both men and women, several biomedical and psychosocial factors affecting HSB have been identified in studies to date. Symptom severity and bother, age, and impact on quality of life have consistently been identified as potent determinants of treatment seeking for LUTS. Race and ethnicity also play a role. Advice from others and the media, embarrassment, personal beliefs and attitudes towards healthcare use, and subjective well‐being are but a few of the psychosocial determinants which may impact on a patient's decision to seek medical advice for LUTS. Studying the role of reassurance versus medical treatment, referral patterns for LUTS in various populations, the role of comorbidities in HSB, cultural issues, bother‐associated parameters and psychosocial profiles in association with healthcare‐seeking, patients' expectations, HSB in relation to health economics, and development of questionnaires on HSB for patients and physicians should be amongst future research priorities.ConclusionsIncreasing research interest has helped identify several biomedical and psychosocial factors affecting HSB for LUTS. Qualitative research is needed as well as studies to address aspects of HSB, not only in subjects attending the available healthcare services, but even more in those patients who do not seek medical advice for their LUTS. Neurourol. Urodynam. 31:365–369, 2012. © 2012 Wiley Periodicals, Inc.
Defining female voiding dysfunction: ICI‐RS 2011
Authors: Robinson Dudley , Staskin David , Laterza Rosa M. , Koelbl Heinz 
Published: March 2012

AbstractWhilst symptoms of Bladder Outlet Obstruction (BOO) and post micturition symptoms are more commonly reported in men a significant number of women may also complain of voiding dysfunction. However, despite the recent advances in the standardisation of terminology of lower urinary tract dysfunction there remains a lack of consensus regarding a precise diagnosis and definition of voiding abnormalities in women. In addition voiding symptoms may co‐exist with storage symptoms as well as those associated with urinary incontinence. Consequently many patients present with a spectrum of different urinary symptoms, related to both storage and voiding, which may be multifactorial in origin or be related to one another. The purpose of this paper is to review the current literature in order to accurately define and classify female voiding dysfunction including causes and aetiology. In addition to reviewing the investigation and management of those women with voiding dysfunction recommendations are proposed for management in clinical practice as well as suggestions for future research. Neurourol. Urodynam. 31:313–316, 2012. © 2012 Wiley Periodicals, Inc.
Does psychological stress affect LUT function in children?: ICI‐RS 2011
Authors: von Gontard Alexander 
Published: March 2012

AbstractAimsPsychological factors and LUTS are closely associated in children. 20–40% of children with nocturnal enuresis (NE) and 30–40% with daytime urinary incontinence (DUI) have a clinical psychiatric disorder, many more are distressed. The associations are complex and differ for each individual subtype of disorder, as both genetic and environmental factors can interact. The aim of this paper is to provide an overview and discuss possible causal associations.MethodsRelevant studies are reviewed—preferably with population‐based, representative results.ResultsFour basic associations are possible. Psychological symptoms and disorders can (1) be a consequence of LUTS and NE/DUI; (2) They can be induced by them; (3) Both can be due to common, shared etiological factors; and (4) They can co‐occur by chance without causality.ConclusionsDue to these complex associations, a descriptive approach is endorsed. Both the subtype of NE/DUI and possible psychological symptoms and disorders need to be identified—possible causal relationships can be analyzed in a second step. Screening for psychological symptoms with parental behavioral questionnaires in all settings is recommended, as well as counselling and treatment if indicated. Neurourol. Urodynam. 31:344–348, 2012. © 2012 Wiley Periodicals, Inc.