bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of surface water resources and evapotranspiration in the Haihe River basin of China using SWAT model
Authors: Sun Chen , Ren Li 
Published: January 2012

AbstractQuantitative assessment of surface water resources (SWRs) and evapotranspiration (ET) is essential and significant for reasonably planning and managing water resources in the Haihe River basin which is facing severe water shortage. In this study, a distributed hydrological model of the Haihe River basin was constructed using the Soil and Water Assessment Tool, well considering the reservoirs and agricultural management practices for reasonable simulation. The crop parameters were independently calibrated with the observed crop data at six experimental stations. Then, sensitivity ranks of hydrological parameters were analysed, which suggested the important parameters used for calibration. The model was successfully calibrated using the monthly observed data of discharge in around 1970–1991 and actual ET (ETa) in 2002–2004 for the mountainous area and Haihe plain, respectively. Meanwhile, good agreements between the simulated and statistical crop yields in 1985–2005 further verified the model's appropriateness. Finally, the calibrated model was used to assess SWRs and ETa in time and space during 1961–2005. Results showed that the average annual natural SWRs and the ETa were about 17.5 billion cubic metre and 542 mm, respectively, both with a slight downward trend. The spatial distributions of both SWRs and ETa were significantly impacted by variations of precipitation and land use. Moreover, the reservoir in operation was the main factor for the noticeable decline of actual SWRs. In the Haihe plain, the ETa with irrigation was increased by 46% compared with that under rainfed conditions. In addition, this study identified the regions with potential to improve the irrigation effects on water use. Copyright © 2012 John Wiley & Sons, Ltd.
GENERALIZED AUTOREGRESSIVE SCORE MODELS WITH APPLICATIONS
Authors: Creal Drew , Koopman Siem Jan , Lucas André 
Published: January 2012

SUMMARYWe propose a class of observation‐driven time series models referred to as generalized autoregressive score (GAS) models. The mechanism to update the parameters over time is the scaled score of the likelihood function. This new approach provides a unified and consistent framework for introducing time‐varying parameters in a wide class of nonlinear models. The GAS model encompasses other well‐known models such as the generalized autoregressive conditional heteroskedasticity, autoregressive conditional duration, autoregressive conditional intensity, and Poisson count models with time‐varying mean. In addition, our approach can lead to new formulations of observation‐driven models. We illustrate our framework by introducing new model specifications for time‐varying copula functions and for multivariate point processes with time‐varying parameters. We study the models in detail and provide simulation and empirical evidence. Copyright © 2012 John Wiley & Sons, Ltd.
Freeze‐dried human serum albumin improves the adherence and proliferation of mesenchymal stem cells on mineralized human bone allografts
Authors: Weszl Miklós , Skaliczki Gábor , Cselenyák Attila , Kiss Levente , Major Tibor , Schandl Károly , Bognár Eszter , Stadler Guido , Peterbauer Anja , Csönge Lajos , Lacza Zsombor 
Published: January 2012

AbstractMineralized scaffolds are widely used as bone grafts with the assumption that bone marrow derived cells colonize and remodel them. This process is slow and often unreliable so we aimed to improve the biocompatibility of bone grafts by pre‐seeding them with human mesenchymal stem cells from either bone marrow or dental pulp. Under standard cell culture conditions very low number of seeded cells remained on the surface of freeze‐dried human or bovine bone graft or hydroxyapatite. Coating the scaffolds with fibronectin or collagen improved seeding efficiency but the cells failed to grow on the surface until the 18th day. In contrast, human albumin was a very potent facilitator of both seeding and proliferation on allografts which was further improved by culturing in a rotating bioreactor. Electron microscopy revealed that cells do not form a monolayer but span the pores, emphasizing the importance of pore size and microstructure. Albumin coated bone chips were able to unite a rat femoral segmental defect, while uncoated ones did not. Micro‐hardness measurements confirmed that albumin coating does not influence the physical characteristics of the scaffold, so it is possible to introduce albumin coating into the manufacturing process of lyophilized bone allografts. © 2011 Orthopaedic Research Society Published by Wiley Periodicals, Inc. J Orthop Res 30:489–496, 2012
Mechanically induced calcium signaling in chondrocytes in situ
Authors: Han Sang‐Kuy , Wouters Wim , Clark Andrea , Herzog Walter 
Published: January 2012

AbstractChanges in intracellular calcium (Ca2+) concentration, also known as Ca2+ signaling, have been widely studied in articular cartilage chondrocytes to investigate pathways of mechanotransduction. Various physical stimuli can generate an influx of Ca2+ into the cell, which in turn is thought to trigger a range of metabolic and signaling processes. In contrast to most studies, the approach used in this study allows for continuous real time recording of calcium signals in chondrocytes in their native environment. Therefore, interactions of cells with the extracellular matrix (ECM) are fully accounted for. Calcium signaling was quantified for dynamic loading conditions and at different temperatures. Peak magnitudes of calcium signals were greater and of shorter duration at 37°C than at 21°C. Furthermore, Ca2+ signals were involved in a greater percentage of cells in the dynamic compared to the relaxation phases of loading. In contrast to the time‐delayed signaling observed in isolated chondrocytes seeded in agarose gel, Ca2+ signaling in situ is virtually instantaneous in response to dynamic loading. These differences between in situ and in vitro cell signaling responses might provide crucial insight into the role of the ECM in providing pathways of mechanotransduction in the intact cartilage that are absent in isolated cells seeded in gel constructs. © 2011 Orthopaedic Research Society Published by Wiley Periodicals, Inc. J Orthop Res 30:475–481, 2012
Compact dual‐mode bandpass filter using slotline resonator and stubs
Authors: Liu H. W. , Fan Y. C. , Wei G. W. , Xu W. Y. , Zhang Z. C. , Gui Z. P. , Huang D. C. 
Published: January 2012

AbstractA compact elliptic‐function‐response bandpass filter using slotline resonators and stubs is designed in this letter. This slotline resonator is composed by one loop resonator with four corner‐patch perturbation and stubs. The nature of coupling between the degenerate modes is investigated with respect to the perturbation size. Also, slotline stubs are applied to miniature the filter's size by keeping excellent performance. Results verify that the central frequency and the fractional bandwidth of the proposed filter are 5.23 GHz and 7.45%, respectively. A good agreement between simulation and measurement verifies the validity of this design methodology. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:641–644, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26603
An improved multilevel simple sparse method with adaptive cross approximation for scattering from target above lossy half space
Authors: Hu Xiaoqing , Zhang Chi , Xu Yuan , Ding Dazhi , Chen Rushan 
Published: January 2012

AbstractThe adaptive cross approximation (ACA) algorithm has been used to reduce memory requirements and matrix‐vector product (MVP) time since it was proposed to solve electric field integral equation of electromagnetic problems. In this letter, we firstly introduce an improved multilevel simple sparse method (MLSSM). Based on the improved MLSSM, the impedance matrix resulting from ACA algorithm can be represented very sparsely. In the sparse representation, the far‐field interaction parts of impedance matrix can be represented by multiplication of three sparse matrices in recursive manner. Moreover, an efficient MVP operation is implemented by using the sparse representation. Numerical experiments demonstrate that our improved MLSSM with ACA algorithm outperforms original ACA algorithm in terms of memory requirement of far‐field interactions and the time per MVP operation. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:573–577, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26606
Design of a wideband 377 Ω E‐shaped patch antenna for RF energy harvesting
Authors: Devi Kavuri K. A. , Sadasivam S. , Din Norashidah Md. , Chakrabarthy C.K. , Rajib S. K. 
Published: January 2012

AbstractThe design of a 377 Ω E‐shaped patch antenna with partial ground plane is presented and discussed in this article. Two parallel slots are introduced into the conventional patch antenna, and it was investigated by the currents through the patch to enhance its bandwidth. The antenna is designed, fabricated, and measured for downlink frequency band of GSM 900, which shows an impedance bandwidth of 29.03% (277 MHz) at 954 MHz. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:569–573, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26607
Fiber bragg grating current sensor based on birefringence effect
Authors: Zhao Yong , Song Ting‐Ting 
Published: January 2012

AbstractA novel DC current sensor configuration by combining the sensing theory of fiber Bragg grating (FBG) with the birefringence effect is proposed.Electromagnet force will occur when the measured current is applied due to the sensor configuration of a magnetic coil and a permanent magnet. A sensing FBG and a supporting fiber with the same diameter and material are inserted between two glass sheets. The electromagnet force will act on the glass sheets, resulting in a radial load on the sensing FBG. This transverse load will lead to the birefringence effect because of the different strain or refractive index variation of the two orthogonal axes of the sensing fiber. Thus, two orthogonal polarization modes will be reflected by the sensing FBG with different wavelengths. The theoretical model between Bragg wavelength shifts versus the applied current is derived. Preliminary experiments and simulation results show that current measurement sensitivity can reach 2 nm/A, and measurement resolution is about 0.5 mA. Cross‐sensitivity of temperature can be compensated by the differential method. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:822–826, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26609
Microstrip dual I‐band bandpass filter with symmetrical twin‐inductor resonators
Authors: Maharjan Ram Krishna , Kim Nam‐Young 
Published: January 2012

AbstractA novel compact microstrip dual‐mode dual‐band bandpass filter using two symmetrical twin‐inductor resonators for I‐band application is proposed.Double twin symmetrical rectangular‐shaped inductors are connected with the stepped‐impedance resonator terminals for matching 50 Ω impedance. The two twin‐inductor ends are connected to ground with via connections. The two opposite inductors are joined and become twin‐inductor structure that also behaves as an inductor‐interdigital coupling. The combination of the two those twin‐inductor interdigital structures give strong inductive couplings between the two ports and develop a fixed resonance frequency. This filter is designed to operate at 8.1 GHz and 10.7 GHz resonant frequency with a 20.98 and 13.08% effective bandwidth, respectively, at the 3‐dB passband. More than 20 dB spurious suppression was measured in between two distinct bands. The measured insertion loss (S21) was less than 1 dB recorded for both bands and return loss (S11) was more than 21 dB measured at center operating frequencies of both bands. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:638–641, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26617
Compact and high selectivity triple‐band dual‐mode microstrip BPF with two short‐circuited stub‐loaded SIRs
Authors: Deng Hong‐wei , Liu Bing , Zhao Yong‐jiu , Chen Wen , Zhang Xue‐shun 
Published: January 2012

AbstractIn this letter, a compact and high selectivity triple‐band dual‐mode microstrip bandpass filter (BPF) is proposed using two short‐circuited stub‐loaded stepped‐impedance resonators (SIRs), which are same type but different size, that is, the SIR I and the SIR II with smaller size. The SIR I is designed to operate at the first and third passbands and the SIR II at the second passband. The passband frequencies can be conveniently tuned to desired values. Because of the intrinsic characteristics of the SIRs and the source–load coupling, six transmission zeros can be created to improve the selectivity of the triple‐band BPF. Finally, a filter prototype located at 1.57 (GPS application), 2.4, and 5.2 GHz (WLAN application) is designed, fabricated, and measured. The simulated and measured results are presented and an excellent agreement is obtained. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:719–721, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26654
Novel formulation of efficiency measure for multifilar transformers in generalized multiport configurations of integrated passive devices
Authors: Huang Chien‐Hsiang , Chen Chien‐Hsun , Horng Tzyy‐Sheng 
Published: January 2012

AbstractThis article formulates generalized transformer efficiency associated with the application of above‐IC multifilar transformers to multiport integrated passive devices (IPDs). The formulation derives the power‐loss ratio for a multifilar transformer in a multiport configuration based on a terminated microwave network, leading to the expression of passive efficiency using the concept of power conservation. For demonstration, the S‐parameters for several different types of three‐port transformers have been measured to compute their passive efficiency and, further, predict the minimum available insertion loss of three‐port IPDs such as baluns and combiners that use these three‐port transformers. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:656–661, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26656
Dual‐band bandstop frequency selective surfaces with gosper prefractal elements
Authors: Silva Paulo H. da F. , dos Santos Albanisa F. , Cruz Rossana M.S. , D'Assunção Adaildo G. 
Published: January 2012

AbstractSelf‐similarity property of Gosper island prefractals is exploited to design frequency selective surfaces (FSSs) for dual‐band bandstop filter operation. The use of Gosper prefractal patch elements enables the adjustment of FSS parameters (resonant frequency and −10 dB bandwidth) according to the number of fractal iterations but without modifying their original size. Transmission properties of proposed FSSs are characterized by means of simulations and measurements. Four FSS prototypes were fabricated and measured. The obtained results show an interesting dual‐band behavior. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:771–775, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26663
SET‐RAFT of MMA mediated by ascorbic acid‐activated copper oxide
Authors: Zhang Qin , Zhang Zhengbiao , Wang Wenxiang , Zhu Jian , Cheng Zhenping , Zhou Nianchen , Zhang Wei , Zhu Xiulin 
Published: January 2012

AbstractIn this work, cupric oxide (CuO) or cuprous oxide (Cu2O) was used as the catalyst for the single electron transfer‐reversible addition‐fragmentation chain transfer (SET‐RAFT) polymerization of methyl methacrylate in the presence of ascorbic acid at 25 °C. 2‐Cyanoprop‐2‐yl‐1‐dithionaphthalate (CPDN) was used as the RAFT agent. The polymerization occurred smoothly after an induction period arising from the slow activation of CuO (or Cu2O) and the “initialization” process in RAFT polymerization. The polymerizations conveyed features of “living”/controlled radical polymerizations: linear evolution of number‐average molecular weight with monomer conversion, narrow molecular weight distribution, and high retention of chain end fidelity. From the polymerization profile, it was deduced that the polymerization proceeded via a conjunct mechanism of single electron transfer‐living radical polymerization (SET‐LRP) and RAFT polymerization, wherein CPDN acting as the initiator for SET‐LRP and chain transfer agent for RAFT polymerization. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
Clarithromycin therapy for patients with Cystic Fibrosis: A randomized controlled trial
Authors: Robinson P. , Schechter Michael S. , Sly Peter D. , Winfield Kaye , Smith Julie , Brennan Siobhain , Shinkai Masaharu , Henke Markus O. , Rubin Bruce K. 
Published: January 2012

AbstractThe clinically significant actions of oral azithromycin in modifying progressive cystic fibrosis (CF) lung disease have been well documented. In vitro and clinical data suggests that clarithromycin has immunomodulatory properties similar to other 14‐member macrolides, however two previously reported short term, open label trials of clairthromycin in small numbers of patients with CF failed to show significant benefits in modifying lung function or inflammation. We performed an international double blind, cross‐over trial in which 63 subjects with CF were studied while receiving either placeo or 500 mg oral clarithromycin twice daily for 5 months, with a 1‐month wash‐out. The primary efficacy end point was the change in lung function (FEV1 and FVC) during the clarithromycin treatment period compared to placebo treatment. Secondary efficacy end points included; quality of life, number of pulmonary exacerbations, height and weight, sputum inflammatory mediator content, sputum transportability and surface properties, bacterial flora, nasal potential difference, and breath condensate. No significant difference in either the primary efficacy end point or any secondary end point was seen during the period of clarithromycin treatment compared to those seen during placebo administration. We conclude that clarithromycin is not effective in treating CF lung disease. Pediatr Pulmonol. 2012; 47:551–557. © 2012 Wiley Periodicals, Inc.
L2 stability, H∞ control of switched homogeneous nonlinear systems and their semi‐tensor product of matrices representation
Authors: Zhang Lijun , Zhang Kuize 
Published: January 2012

SUMMARYThis paper investigates the problems of L2 stability and H∞ control of switched homogeneous nonlinear systems. This paper gives that if a switched homogeneous nonlinear system with disturbance is internally homogeneously asymptotically stable, then it has a finite L2 gain, and if a switched homogeneous nonlinear system with disturbance and controls is homogeneously stabilizable under the zero disturbance condition, its H∞ control problem is solvable under some mild conditions, and a homogeneous solution is given. Then, via the semi‐tensor product of matrices method, the aforementioned obtained results are transformed to linear‐like forms, and the aforementioned obtained Hamilton–Jacobi–Isaacs inequality is transformed to a linear‐like matrix inequality, which makes it feasible to compute the solutions by computer. Copyright © 2012 John Wiley & Sons, Ltd.
Total anomalous pulmonary venous connection: impact of prenatal diagnosis
Authors: Seale A. N. , Carvalho J. S. , Gardiner H. M. , Mellander M. , Roughton M. , Simpson J. , Tometzki A. , Uzun O. , Webber S. A. , Daubeney P. E. F. ,   on behalf of the British Congenital Cardiac Association
Published: January 2012

AbstractObjectivesTo investigate whether prenatal screening is effective in the detection of total anomalous pulmonary venous connection (TAPVC) and to identify common prenatal features.MethodsThis was a retrospective collaborative study involving 19 pediatric cardiac centers in the UK, Ireland and Sweden. Cases with TAPVC born between January 1, 1998 and December 31, 2004, and prenatally diagnosed cases whose estimated dates of delivery were within this time frame, were identified. Cases with functionally univentricular circulation or atrial isomerism were excluded. All available data and stored images were reviewed.ResultsFour‐hundred and twenty‐four cases with TAPVC were identified prenatally or postnatally, of whom eight (1.9%) had a prenatal diagnosis of TAPVC. Median gestational age at fetal diagnosis was 26 + 6 (range, 22 + 4 to 32 + 0) weeks. Six further fetuses with TAPVC had an abnormality diagnosed on prenatal ultrasound, but not the TAPVC. This included other congenital heart defects (four cases) and isolated pleural effusion (two cases). Seventeen (4.0%) of the 422 liveborn infants had a first‐degree relative with congenital heart disease; and six of 17 had a sibling with TAPVC. Two died in utero. Of the liveborn infants diagnosed prenatally with TAPVC, none required urgent intervention for pulmonary venous obstruction and all were alive and well at a median of 2.3 (range, 1.0–7.0) years after surgical repair.ConclusionPrenatal diagnosis of TAPVC is infrequent using current screening methods. Where there is a family history of TAPVC, specialized fetal echocardiography at 20 and 28 weeks' gestation may be indicated. Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd.
Psychological Distress with Direct‐to‐Consumer Genetic Testing: A Case Report of an UnexpectedBRCAPositive Test Result
Authors: Dohany Lindsay , Gustafson Shanna , Ducaine Whitney , Zakalik Dana 
Published: January 2012

AbstractWe report a case of a client who discovered she had aBRCAmutation following direct‐to‐consumer (DTC) genetic testing in the absence of genetic counseling. After testing she presented for genetic counseling with anxiety, distress, and a deficit of knowledge about what the DTC genetic testing revealed. Genetic counseling helped alleviate distress while empowering the client to apply the results of testing to improve medical management. Despite recent studies demonstrating no negative psychological impact of DTC genetic testing on the consumer, this case illustrates that significant psychological distress and confusion can occur as a result of DTC genetic testing for highly penetrant single gene disorders. Pre‐ and post‐test genetic counseling in conjunction with DTC genetic testing may alleviate consumers’ distress and empower clients to proactively utilize their result information.
Parent–child relations and psychological adjustment among high‐achieving Chinese and European American adolescents
Authors: Qin Desiree Baolian , Rak Eniko , Rana Meenal , Donnellan M. Brent 
Published: January 2012

ABSTRACTChinese American students are often perceived as problem‐free high achievers. Recent research, however, suggests that high‐achieving Chinese American students can experience elevated levels of stress, especially comparing to their peers from other ethnic groups. In this paper, we examine how family dynamics may influence psychological adjustment among a group of high‐achieving adolescents. Drawing on survey data collected on 295 Chinese American and 192 European American 9th graders attending a highly selective magnet school, our findings show that Chinese American adolescents reported significantly lower levels of psychological adjustment (d = −.31), and significantly less family cohesion (d = −.34) and more conflict (d = .56) than their European American peers. Further, the ethnic differences on adjustment disappeared after controlling for perceptions of family cohesion and conflict, indicating that such perceptions may be a key factor in understanding the high academic achievement/low psychological adjustment paradoxical pattern of development among Chinese American adolescents.