bluuebunny/crossref_metadata_2025_split huggingface dataset:
A 3.1‐dB NF, 21.31 dB gain micromachined 3–10 GHz distributed amplifier for UWB systems in 0.18‐μm CMOS technology
Authors: Lin Yo‐Sheng , Chang Jin‐Fa , Huang Pen‐Li , Lu Shey‐Shi 
Published: March 2012

AbstractA high‐gain and low‐noise micromachined CMOS distributed amplifier (DA) using cascaded gain cell, which constitutes an inductively parallel‐peaking cascode‐stage with a low‐Q RLC load and an inductively series‐peaking common‐source stage, is demonstrated.Flat and high S21 and flat and low noise figure (NF) are achieved simultaneously by adopting a slightly under‐damped Q‐factor for the second‐order transconductance frequency response of the proposed cascaded gain cell. The two‐stage DA consumes 37.8 mW and achieves flat and high S21 of 20.47 ± 0.72 dB with an average NF of only 3.3 dB over the 3∼10 GHz band of interest, one of the best reported NF performances for a CMOS UWB DA or LNA in the literature. In addition, the result shows that a 0.84‐dB increase in average S21 (from 20.47 to 21.31 dB) and a 0.2‐dB decrease (from 3.3 to 3.1 dB) in average NF are achieved mainly due to the improvement of the quality factor of the inductors in the DA. This means that this DA architecture in conjunction with the backside ICP dry‐etching technique is very promising for high‐performance 3∼10 GHz UWB communication systems. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1163–1167, 2012
Novel tunable single‐longitunal mode fiber ring laser with two FBG‐FP filters
Authors: Du Yong , Dong Xiaopeng , Chen Minxiu , Zhou Jinlong 
Published: March 2012

AbstractUsing a pair of fiber Bragg grating Fabry‐Pérot filters (FBG‐FP) as its wavelength‐selective components based on the Vernier effect, a novel single longitudinal, discretely tunable and stable fiber ring laser is proposed in this letter.We studied the characteristics of this sort of tunable fiber laser both theoretically and experimentally, and obtained eight single‐wavelength lasing from 1550.840 to 1551.762 nm with an average of 96 pm spacing by pulling the Tunable FBG‐FP. The output spectrum of the single‐wavelength lasing is specified by the transmission maximum of the fixed FBG‐FP and recorded automatically by the optical spectrum analyzer at an interval of 1 min. It is found that the output wavelength drift within a few picometers, and the fluctuation of the output power is less than 0.1 dB. This sort of fiber ring laser has potential applications in optical communications and sensors. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1230–1234, 2012
A 30–65 GHz wideband double‐balanced gilbert‐cell mixer using GaAs pHEMT technology
Authors: Kao Hsuan‐Ling , Ke J.Y. , Yeh C. S. , Chiu Hsien‐Chin , Fu Jeffrey S. 
Published: March 2012

AbstractThis article presents a wideband, double‐balanced microwave/millimeter‐wave Gilbert‐cell mixer, using 0.15 μm GaAs pHEMT technology. Two baluns and a matching network are used in RF‐ and LO‐ports to convert single‐ended signals to differential signals, for wideband use. This mixer demonstrates an average conversion gain is 2.22 ± 1.5 dB at PLO = 2 dBm, from 30 to 65 GHz. The LO‐to‐RF and LO‐to‐IF isolations are all better than 28 dB, between 30 and 65 GHz. The measured P1dB and IIP3 are 5 dBm at 40 GHz and 10 dBm at 60 GHz, respectively. The mixer occupies a chip area, including probing pads, of 1.68 mm2 and consumes 21 mA, with a supply voltage of 5V. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1196–1200, 2012
Compact ultra‐wideband bandpass filter with new coupled line structure for wireless
Authors: Shaman Hussein 
Published: March 2012

AbstractIn this letter, a new ultra‐wideband bandpass filter using microstrip parallel coupled line structure is proposed. The filter is constructed of only two sections of three‐coupled lines, which is a quarter wavelength long at the midband frequency. In addition, one of the outer coupled lines of each section is shorted to the ground. As a result, the filter exhibits two new symmetric transmission zeros around the passband, which increase the selectivity of both edges of the passband significantly. The transmission zeros can be located at the desired frequency by adjusting the width or the length of the coupled lines or also by changing the gap between them. The desired bandwidth can be obtained where the bandwidth is reversely proportional to the gap between the coupled lines. The design is successfully realized verified by full‐wave electromagnetic simulation and the experiment. A good agreement between the expected and measured results is obtained, and it validates the efficiency of the proposed new coupled line structure and corresponding filter design technique. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1319–1321, 2012
Single walled carbon nanotube bolometer coupled to a Sierpinski fractal antenna for the detection of megahertz radiation
Authors: Vera‐Reveles Gustavo , Simón Jorge , Briones Edgar , González Francisco J. 
Published: March 2012

AbstractIn this article, the receiving properties of a fractal antenna coupled to a film of single‐walled carbon nanotubes used as a bolometer are numerically and experimentally investigated in the megahertz frequency region. The numerical results show resonant frequencies at 420 and 1710 MHz, close to the 500 and 1600 MHz resonant frequencies obtained experimentally, the responsivity of the devices was calculated at 0.178 V/W at 610 MHz for an ibias of 0.3 μA. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1251–1253, 2012
Acoustic dispersion measurement for a single‐mode‐fiber‐based acoustooptic tunable filter excited by flexural acoustic wave
Authors: Zhang Hao , Liu Bo , Lin Wei , Dong Hongguang , Liu Lihui 
Published: March 2012

AbstractAn experimental approach to directly measure acoustic dispersion for a single‐mode‐fiber‐based acoustooptic tunable filter excited by flexural acoustic wave has been proposed and experimentally demonstrated. The cladding modes that participate in the mode coupling process have been ascertained by using the phase matching condition. And based on experimental observation of transmission spectral response to applied frequency, acoustic phase velocity as a function of applied radiation frequency signal frequency has been obtained. Furthermore, averaged acoustic dispersion across different cladding modes indicates that acoustic round frequency linearly increases with the increment of acoustic propagation constant with a coefficient of determination of 0.99941. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1281–1285, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26790
Physical interpretation of negative characteristic resistances associated with lossless periodic transmission line structures
Authors: Lamultree Suthasinee , Torrungrueng Danai 
Published: March 2012

AbstractThis article presents a physical interpretation of negative characteristic resistances (NCRs) associated with lossless periodic transmission line (TL) structures using the model of conjugately characteristic‐impedance transmission lines (CCITLs).Interestingly, the CCITL model of lossless periodic TL structure can exhibit both non‐negative characteristic resistances (NNCR) and NCRs with appropriate propagation constants. Nevertheless, the physical meaning for the NCR case is still ambiguous. To physically interpret the NNCR and NCR cases, it is found that the propagation constant plays an important role. In addition, the suitable definitions of incident and reflected waves for both NNCR and NCR cases are also provided. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1180–1183, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26796
A high‐performance ibc‐Hub transceiver for intra‐body communication system
Authors: Lin Yo‐Sheng , Wang Chien‐Chin , Chen Chi‐Chen , Hsiao Chung‐Chih , Chou Yi‐Hsuan 
Published: March 2012

AbstractWe report a high‐performance intra‐body communication hub (IBC‐hub) transceiver for IBC system, consisting of an on–off keying (OOK) transmitter and a clock and data recovery (CDR) receiver. We also demonstrate the signal transmission model of IBC. The OOK transmitter in the IBC‐hub takes commands from the RF gateway, and then transmits them to the sensor node biomedical system‐on‐a‐chip (SOC) through human body. The CDR receiver in the IBC‐hub receives the biomedical signals (in digital format) from the sensor node biomedical SOC through human body, and then transfers them to the RF gateway through the micro‐control unit. Such kind of transmission methodology in conjunction with our proposed IBC network is much more power‐efficient than wireless communication. Moreover, since no antenna is required, small chip size is achieved. The OOK transmitter consumes 12.7 mW and achieves an output power of −11.36 dBm at 433 MHz. At supply voltage of 3 V, the CDR receiver consumes 2.2 mW and achieves RMS jitter and eye height (of the data eye diagram) of 1.81 ns and 2.747 V, respectively, in the condition of locking to a 2 Mb/s pseudo‐random binary sequence with length of 27 − 1. The measured bit‐error rate in IBC transmission is 2.44 × 10−9, better than previous work in the literature. The excellent results indicate the IBC‐hub transceiver is suitable for IBC system. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1143–1153, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26797
How should bladder sensation be measured?: ICI‐RS 2011
Authors: De Wachter S. , Smith P. , Tannenbaum C. , Van Koeveringe G. , Drake M. , Wyndaele J.J. , Chapple C. 
Published: March 2012

AbstractAimsDisturbed bladder sensations, or in broader terms, sensory dysfunctions are increasingly recognized as key elements in the origin and manifestation of symptom syndromes of urinary dysfunction. Adequate assessment of bladder sensation is crucial to improve our understanding of the pathophysiology and treatment of urinary dysfunction. This manuscript summarizes the discussions of a think tank on “How to measure bladder sensation” held at the ICI‐RS meeting in 2011.MethodsBased upon literature reviews on bladder sensation presented at the think tank in the ICI‐RS meeting, discussions evolved which were summarized in the ICI‐RS report. Different physicians/researchers further elaborated on this report, which is presented in this manuscript.ResultsBladder sensations are not merely the result of bladder distension. Other factors inside the bladder or bladder wall: central processing and/or cognitive manipulation may play an important role. Current methods to measure sensations such as urodynamics, voiding diaries, forced diuresis, electrical stimulation and brain imaging are likely sub‐optimal as they only consider part of these factors in isolation.ConclusionsDifferent methods to measure bladder sensations have been described and are used in clinical practice. Current methods only address part of the parameters responsible for the generation and perception of urinary sensations. Further focused research is required, and several recommendations are provided. Neurourol. Urodynam. 31:370–374, 2012. © 2012 Wiley Periodicals, Inc.
The adult urology perspective on management of stress urinary incontinence in pediatric urology: ICI‐RS 2011
Authors: Drake Marcus J. 
Published: March 2012

AbstractThe modern era of patient‐centered, multidisciplinary professional practice comes with the expectation of effective interaction between specialties dealing with closely related clinical areas. Interaction between adult and pediatric urology is generally limited in terms of training, conferences, and joint diagnostic/treatment algorithms. However, in the more complex cases managed by pediatric urologists, long‐term medical input is commonly necessary. Accordingly, regular interaction between the relevant specialties would be beneficial for continuity of care of individual patients, achieving best results at transition to adolescence, awareness of long‐term outcome of pediatric urological procedures and development of new surgical techniques. This article reviews the discussions at the 2011 International Consultation on Incontinence Research Society meeting in Bristol. Neurourol. Urodynam. 31:384–385, 2012. © 2012 Wiley Periodicals, Inc.
Can we, and do we need to, define bladder neck hypermobility and intrinsic sphincteric deficiency?: ICI‐RS 2011
Authors: Smith Phillip P. , van Leijsen Sanne A.L. , Heesakkers John P.F.A. , Abrams Paul , Smith Anthony R.B. 
Published: March 2012

AbstractAimsBladder neck hypermobility (BNH, also called urethral hypermobility), and intrinsic sphincteric deficiency (ISD) are terms frequently used in the clinical evaluation and management of stress urinary incontinence, and as subject qualifiers in clinical research. The terms also infer pathophysiologic concepts, as BNH and ISD appear to represent two different aspects of failure of the continence mechanism. Unfortunately, neither term is well‐defined, and the various clinical and urodynamic characterizations of these terms do not correlate well with one another.MethodsThe value of these concepts and these specific terms was debated at the ICI‐RS meeting, Bristol, UK, June 2011. Two clinicians were asked to take opposing viewpoints, with three weeks lead‐time prior to the meeting. Each discussant presented one viewpoint, “for” or “against,” followed by a brief discussion to review the presentations.ResultsThe consensus was that, while we currently cannot adequately define these terms, there is a need to develop terminology employing these concepts.ConclusionsTerminology should permit improved definition of the sphincteric mechanism, allow individual patient characterization and serve as useful waypoints in treatment decisions. Neurourol. Urodynam. 31:309–312, 2012. © 2012 Wiley Periodicals, Inc.
Fostering artistic ensemble performance: Exploring the role of transformational leadership
Authors: Boerner Sabine , Gebert Diether 
Published: March 2012

AbstractAlthough empirical studies suggest that a transformational leadership style is efficient in orchestras, a coherent explanation for this finding is lacking. Linking research on workforce diversity with research on team innovation, this article provides a framework that explains the positive effects of transformational leadership in orchestras. Transformational leaders enhance the positive effects of ensemble diversity on idea generation, while at the same time reducing its negative effects on idea integration. This twofold effect of transformational leadership promotes artistic ensemble performance, that is, a coherent, highly synchronized interpretation of a given score. Contributions to the literature and implications for further research are formulated.
Volunteers and the risk of posttraumatic stress disorder
Authors: Jaffe Eli , Sasson Uzi , Knobler Haim , Aviel Einat , Goldberg Avishy 
Published: March 2012

AbstractSymptoms of posttraumatic stress disorder (PTSD) result from exposure to a traumatic event and influence a person's ability to cope psychologically. Recent documentation from emergency rooms shows that medical personnel, including volunteers who treated severely injured people, can develop symptoms of PTSD even though the volunteers themselves were not personally subjected to the stressful event. This article finds similar results among adolescents who volunteered with Magen David Adom (MDA), Israel's national emergency medical, disaster, ambulance, and blood bank service. Because of the security threats Israel has faced, these adolescents are likely to be exposed to traumatic events during their volunteer service, and some may develop PTSD. This article explores who is most susceptible to developing PTSD and the underlying theories of why that may be the case. Since the adolescents' motives to volunteer vary, the article proposes that volunteers with certain motives retain their enthusiasm for volunteering despite the danger of developing PTSD symptoms. It also finds that some of the motives to volunteer correlated with a reduction in the level of PTSD symptoms. Understanding the adolescents' motivations to volunteer will help nonprofit leaders and managers allocate volunteers according to their motivations and the levels of threat a particular job entails.
Colloidal Synthesis of Gold Semishells
Authors: Rodríguez‐Fernández Denis , Pérez‐Juste Jorge , Pastoriza‐Santos Isabel , Liz‐Marzán Luis M. 
Published: March 2012

AbstractThis work describes a novel and scalable colloid chemistry strategy to fabricate gold semishells based on the selective growth of gold on Janus silica particles (500 nm in diameter) partly functionalized with amino groups. The modulation of the geometry of the Janus silica particles allows us to tune the final morphology of the gold semishells. This method also provides a route to fabricating hollow gold semishells through etching of the silica cores with hydrofluoric acid. The optical properties were characterized by visible near‐infrared (vis‐NIR) spectroscopy and compared with simulations performed using the boundary element method (BEM). These revealed that the main optical features are located beyond the NIR region because of the large core size.
Silole‐containing poly(silylenevinylene)s: Synthesis, characterization, aggregation‐enhanced emission, and explosive detection
Authors: Zhao Zujin , Jiang Tao , Guo Yanju , Ding Liyuan , He Bairong , Chang Zhengfeng , Lam Jacky W. Y. , Liu Jianzhao , Chan Carrie Y. K. , Lu Ping , Xu Liwen , Qiu Huayu , Tang Ben Zhong 
Published: March 2012

AbstractHydrosilylation polymerizations of 1,1‐dimethyl‐2,5‐bis(4‐ethynylphenyl)‐3,4‐diphenylsilole with aromatic silylhydrides including 1,4‐bis(dimethylsilyl)benzene, 4,4′‐bis(dimethylsilyl)biphenyl, 2,5‐bis(dimethylsilyl)thiophene, and 2,7‐bis(dimethylsilyl)‐9,9‐dihexylfluorene in the presence of Rh(PPh3)3Cl catalyst in refluxed tetrahydrofuran afford a series of silole‐containing poly(silylenevinylene)s. Under optimum condition, the alkyne polyhydrosilylation reactions progress efficiently and regioselectively, yielding polymers with high molecular weights (Mw up to 95,300) and good stereoregularity (E content close to 99%) in high yields (up to 92%). The polymers are processable and thermally stable, with high decomposition temperatures in the range of 420−449 °C corresponding to 5% weight loss. They are weakly fluorescent in the solution state but become emissive in the aggregate and film states, demonstrating their aggregation‐enhanced emission characteristics. The explosive sensing capabilities of the polymers are examined in both solution and aggregate states. The emissions of the polymers aggregates in aqueous mixture are quenched more efficiently by picric acid in an exponential pattern with high quenching constants (up to 27,949 L mol−1), suggesting that the polymers aggregates are sensitive chemosensors for explosive detection. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
Effect of precursor chain‐length on the formation and stability of poly(ethylene glycol)‐based supramolecular star polymers
Authors: Gadwal Ikhlas , De Swati , Stuparu Mihaiela C. , Jang Se Gyu , Amir Roey J. , Khan Anzar 
Published: March 2012

AbstractA homologous series of guanosine end‐functionalized poly(ethylene glycol)s have been prepared, and their assembly–disassembly behavior in the presence of potassium cations has been systematically examined upon changing the concentration, temperature, nature of solvent, amount of cation, and type of anion using 1H‐NMR, UV/Vis, and circular dichroism spectroscopy. The results revealed a strong dependence of the assembly formation, and the stability of the formed supramolecular ensemble on the chain‐length of the assembly precursor. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
Associations between cancer‐related financial stress and strain and psychological well‐being among individuals living with cancer
Authors: Sharp Linda , Carsin Anne‐Elie , Timmons Aileen 
Published: March 2012

AbstractBackgroundCancer places a financial and economic burden on individuals, but relatively little is known about the consequences. We investigated associations between cancer‐related financial stress and strain and psychological well‐being.MethodsIndividuals >6 months post‐diagnosis with breast, prostate and lung cancer, identified from the National Cancer Registry Ireland, completed a postal questionnaire. Financial stress was assessed by the impact of the cancer diagnosis on household ability to make ends meet, financial strain by feelings about household financial situation since the cancer diagnosis and psychological well‐being (depression, anxiety and distress) by the Depression Anxiety Stress Scales‐21. Logistic regression was used to identify associations between financial stress and strain and depression, anxiety and distress of (a) any severity and (b) severe or worse.ResultsThe response rate was 54%. Of 654 respondents, 49% reported increased financial stress and 32% increased financial strain due to cancer. Depression, anxiety and distress were present in: 36%, 29% and 29%, respectively (any severity); and 14%, 13% and 13%, respectively (severe or worse). In adjusted analyses, depression risk was raised threefold in those reporting increased cancer‐related financial stress (odds ratio (OR) = 2.79, 95%CI 1.87–4.17) and increased cancer‐related financial strain (OR = 3.56, 95%CI 2.23–5.67). For severe or worse depression, the risk estimates were more pronounced (increased stress: OR = 4.36, 95%CI 2.35–8.10; increased strain: OR = 8.21, 95%CI 3.79–17.77). Similar associations were found for anxiety and distress.ConclusionsCancer‐related financial stress and strain were consistently associated with increased risk of adverse psychological outcomes. If confirmed, these findings provide further rationale for initiatives to alleviate the financial burden of cancer. Copyright © 2012 John Wiley & Sons, Ltd.
Comfort First: an evaluation of a procedural pain management programme for children with cancer
Authors: McCarthy Maria , Glick Ron , Green Jessica , Plummer Karin , Peters Kari , Johnsey Lydia , DeLuca Cinzia 
Published: March 2012

AbstractBackgroundThe Comfort First Program (CFP) provides children and their caregivers with early procedural pain management intervention to reduce procedural pain and distress. This study evaluated whether the CFP was meeting its goals and effectively implementing the Royal Australasian College of Physicians paediatric pain management guidelines.MethodsThe study was conducted as a single‐site cross‐sectional audit. One hundred and thirty‐five patients (mean age 7.7 years) receiving treatment at the Royal Children's Hospital, Melbourne, Children's Cancer Centre Day Oncology Unit were observed. Procedural aspects related to the treatment room, carer and staff behaviour, child distress and use of pharmacologic and nonpharmacologic interventions were recorded using an audit tool developed for the study.ResultsThe procedure room was regularly quiet and prepared before the child entered. Median procedure duration was 8 min. Median procedure wait time was 54 min. At least one carer was typically present during procedures. Comfort First (CF) clinicians were more likely to be present in procedures with a significantly distressed child. Carers, nurses and CF clinicians generally displayed comfort‐promoting behaviour. Topical anaesthetic was regularly utilised. Nonpharmacologic supports were frequently used, particularly distraction. Patients under 8 years of age were significantly more likely to receive nonpharmacologic supports and have a carer and CF clinician present. Age was a significant predictor of distress, with higher distress rates in younger children.ConclusionsThe CFP was found to be effectively implementing procedural pain guidelines. Regular audit is recommended to ensure adherence to pain management standards. Copyright © 2012 John Wiley & Sons, Ltd.