bluuebunny/crossref_metadata_2025 huggingface dataset:
Single-Epoch Navigation Performance with Real BDS Triple-Frequency Pseudorange and EWL/WL Observations
Authors: Gao Wang , Gao Chengfa , Pan Shuguo
Published: March 2016

Triple-frequency signals of China's BeiDou navigation satellite system (BDS) are now accessible in the Asia-Pacific region. It is well understood that the third frequency signal will improve the navigation performance. Some literatures have described several navigation methods by using triple-frequency signals, and evaluated the performance. However the experiments were mostly implemented on simulated or semi-simulated observations. In this paper we investigate the navigation performance using real BDS triple-frequency observations. Apart from the pseudorange observations, carrier observations are also used, since the extra-wide-lane and wide-lane ambiguities can be reliably resolved with a single epoch. Several single-epoch navigation methods using BDS triple-frequency observations are described and the corresponding navigation accuracy and reliability are assessed. Results show that P3 has the highest accuracy among the three pseudorange observations. For carriers, the wide-lane and extra-wide-lane observations can be used to obtain much higher navigation precision compared with pseudorange observations. Besides, the two ambiguity-fixed extra-wide-lane and wide-lane observations can also be combined to ionosphere-free form, which can still obtain sub-decimetre and decimetre navigation accuracy in horizontal and vertical directions respectively.
Improved Bounds for the Ramsey Number of Tight Cycles Versus Cliques
Authors: MUBAYI DHRUV
Published: March 2016

The 3-uniform tight cycle Cs3 has vertex set ${\mathbb Z}_s$ and edge set {{i, i + 1, i + 2}: i ∈ ${\mathbb Z}_s$}. We prove that for every s ≢ 0 (mod 3) with s ⩾ 16 or s ∈ {8, 11, 14} there is a cs > 0 such that the 3-uniform hypergraph Ramsey number r(Cs3, Kn3) satisfies
$$\begin{equation*}
r(C_s^3, K_n^3)< 2^{c_s n \log n}.\
\end{equation*}$$
This answers in a strong form a question of the author and Rödl, who asked for an upper bound of the form $2^{n^{1+\epsilon_s}}$ for each fixed s ⩾ 4, where εs → 0 as s → ∞ and n is sufficiently large. The result is nearly tight as the lower bound is known to be exponential in n.
Endothelin-1 supports clonal derivation and expansion of cardiovascular progenitors derived from human embryonic stem cells
Authors: Soh Boon-Seng , Ng Shi-Yan , Wu Hao , Buac Kristina , Park Joo-Hye C. , Lian Xiaojun , Xu Jiejia , Foo Kylie S. , Felldin Ulrika , He Xiaobing , Nichane Massimo , Yang Henry , Bu Lei , Li Ronald A. , Lim Bing , Chien Kenneth R.
Published: March 2016

Coronary arteriogenesis is a central step in cardiogenesis, requiring coordinated generation and integration of endothelial cell and vascular smooth muscle cells. At present, it is unclear whether the cell fate programme of cardiac progenitors to generate complex muscular or vascular structures is entirely cell autonomous. Here we demonstrate the intrinsic ability of vascular progenitors to develop and self-organize into cardiac tissues by clonally isolating and expanding second heart field cardiovascular progenitors using WNT3A and endothelin-1 (EDN1) human recombinant proteins. Progenitor clones undergo long-term expansion and differentiate primarily into endothelial and smooth muscle cell lineages in vitro, and contribute extensively to coronary-like vessels in vivo, forming a functional human–mouse chimeric circulatory system. Our study identifies EDN1 as a key factor towards the generation and clonal derivation of ISL1+ vascular intermediates, and demonstrates the intrinsic cell-autonomous nature of these progenitors to differentiate and self-organize into functional vasculatures in vivo.
An extended U2AF65–RNA-binding domain recognizes the 3′ splice site signal
Authors: Agrawal Anant A. , Salsi Enea , Chatrikhi Rakesh , Henderson Steven , Jenkins Jermaine L. , Green Michael R. , Ermolenko Dmitri N. , Kielkopf Clara L.
Published: March 2016

How the essential pre-mRNA splicing factor U2AF65 recognizes the polypyrimidine (Py) signals of the major class of 3′ splice sites in human gene transcripts remains incompletely understood. We determined four structures of an extended U2AF65–RNA-binding domain bound to Py-tract oligonucleotides at resolutions between 2.0 and 1.5 Å. These structures together with RNA binding and splicing assays reveal unforeseen roles for U2AF65 inter-domain residues in recognizing a contiguous, nine-nucleotide Py tract. The U2AF65 linker residues between the dual RNA recognition motifs (RRMs) recognize the central nucleotide, whereas the N- and C-terminal RRM extensions recognize the 3′ terminus and third nucleotide. Single-molecule FRET experiments suggest that conformational selection and induced fit of the U2AF65 RRMs are complementary mechanisms for Py-tract association. Altogether, these results advance the mechanistic understanding of molecular recognition for a major class of splice site signals.
Correction: Corrigendum: Correlative in-resin super-resolution and electron microscopy using standard fluorescent proteins
Authors: Johnson Errin , Seiradake Elena , Jones E. Yvonne , Davis Ilan , Grünewald Kay , Kaufmann Rainer
Published: March 2016

Scientific Reports 5: Article number: 9583; published online: 31 March 2015; updated: 08 March 2016 This Article contains an error in the Methods section under subheading ‘Freeze substitution, resin embedding and sectioning’. “The first 12 h of polymerization were done at −45 °C, during which the samples were covered with foil and indirectly exposed to UV light.
Erratum: The role of dung beetles in reducing greenhouse gas emissions from cattle farming
Authors: Slade Eleanor M. , Riutta Terhi , Roslin Tomas , Tuomisto Hanna L.
Published: March 2016

Scientific Reports 6: Article number: 18140; published online: 05 January 2016; updated: 08 March 2016 The original version of this Article contained an error in the Abstract. “These considerations give a new perspective on previous results perspective, and suggest that studies of biotic effects on GHG emissions from dung pats on a global scale are a priority for current research.
Neuronal activity controls transsynaptic geometry
Authors: Glebov Oleg O. , Cox Susan , Humphreys Lawrence , Burrone Juan
Published: March 2016

The neuronal synapse is comprised of several distinct zones, including presynaptic vesicle zone (SVZ), active zone (AZ) and postsynaptic density (PSD). While correct relative positioning of these zones is believed to be essential for synaptic function, the mechanisms controlling their mutual localization remain unexplored. Here, we employ high-throughput quantitative confocal imaging, super-resolution and electron microscopy to visualize organization of synaptic subdomains in hippocampal neurons. Silencing of neuronal activity leads to reversible reorganization of the synaptic geometry, resulting in a increased overlap between immunostained AZ and PSD markers; in contrast, the SVZ-AZ spatial coupling is decreased. Bayesian blinking and bleaching (3B) reconstruction reveals that the distance between the AZ-PSD distance is decreased by 30 nm, while electron microscopy shows that the width of the synaptic cleft is decreased by 1.1 nm. Our findings show that multiple aspects of synaptic geometry are dynamically controlled by neuronal activity and suggest mutual repositioning of synaptic components as a potential novel mechanism contributing to the homeostatic forms of synaptic plasticity.
A “building block” approach to the new influenza A virus entry inhibitors with reduced cellular toxicities
Authors: Lin Dongguo , Li Fangfang , Wu Qiuyi , Xie Xiangkun , Wu Wenjiao , Wu Jie , Chen Qing , Liu Shuwen , He Jian
Published: March 2016

Influenza A virus (IAV) is a severe worldwide threat to public health and economic development that results in the emergence of drug-resistant or highly virulent strains. Therefore, it is imperative to develop potent anti-IAV drugs with different modes of action to currently available drugs. Herein, we show a new class of antiviral peptides generated by conjugating two known short antiviral peptides: part-1 (named Jp with the sequence of ARLPR) and part-2 (named Hp with the sequence of KKWK). The new peptides were thus created by hybridization of these two domains at C- and N- termini, respectively. The anti-IAV screening results identified that C20-Jp-Hp was the most potent peptide with IC50 value of 0.53 μM against A/Puerto Rico/8/34 (H1N1) strain. Interestingly, these new peptides display lower toxicities toward mammalian cells and higher therapeutic indices than their prototypes. In addition, the mechanism of action of C20-Jp-Hp was extensively investigated.
Polarization-dependent interfacial coupling modulation of ferroelectric photovoltaic effect in PZT-ZnO heterostructures
Authors: Pan Dan-Feng , Bi Gui-Feng , Chen Guang-Yi , Zhang Hao , Liu Jun-Ming , Wang Guang-Hou , Wan Jian-Guo
Published: March 2016

Recently, ferroelectric perovskite oxides have drawn much attention due to potential applications in the field of solar energy conversion. However, the power conversion efficiency of ferroelectric photovoltaic effect currently reported is far below the expectable value. One of the crucial problems lies in the two back-to-back Schottky barriers, which are formed at the ferroelectric-electrode interfaces and blocking most of photo-generated carriers to reach the outside circuit. Herein, we develop a new approach to enhance the ferroelectric photovoltaic effect by introducing the polarization-dependent interfacial coupling effect. Through inserting a semiconductor ZnO layer with spontaneous polarization into the ferroelectric ITO/PZT/Au film, a p-n junction with strong polarization-dependent interfacial coupling effect is formed. The power conversion efficiency of the heterostructure is improved by nearly two orders of magnitude and the polarization modulation ratio is increased about four times. It is demonstrated that the polarization-dependent interfacial coupling effect can give rise to a great change in band structure of the heterostructure, not only producing an aligned internal electric field but also tuning both depletion layer width and potential barrier height at PZT-ZnO interface. This work provides an efficient way in developing highly efficient ferroelectric-based solar cells and novel optoelectronic memory devices.
The development of a novel chemiluminescent glucose sensor using hydrophilic Co3O4@SiO2 mesoporous nanoparticles
Authors: Li Xiaohua , Bai Yun feng , Feng Feng , Zhang Zhujun
Published: March 2016

The development of a novel chemiluminescent glucose sensor using hydrophilic Co3O4@SiO2 mesoporous nanoparticles.
New tetranuclear manganese clusters with [MnII3MnIII] and [MnII2MnIII2] metallic cores exhibiting low and high spin ground state
Authors: Sobocińska M. , Antkowiak M. , Wojciechowski M. , Kamieniarz G. , Utko J. , Lis T.
Published: March 2016

Two tetranuclear mixed-valent clusters with the metallic [MnII3MnIII] and [MnII2MnIII2] cores were synthesized as molecular nanomagnets with the low and high spin in the ground state.
Scaffold morphing leading to evolution of 2,4-diaminoquinolines and aminopyrazolopyrimidines as inhibitors of the ATP synthesis pathway
Authors: Tantry Subramanyam J. , Shinde Vikas , Balakrishnan Gayathri , Markad Shankar D. , Gupta Amit K. , Bhat Jyothi , Narayan Ashwini , Raichurkar Anandkumar , Jena Lalit Kumar , Sharma Sreevalli , Kumar Naveen , Nanduri Robert , Bharath Sowmya , Reddy Jitendar , Panduga Vijender , Prabhakar K. R. , Kandaswamy Karthikeyan , Kaur Parvinder , Dinesh Neela , Guptha Supreeth , Saralaya Ramanatha , Panda Manoranjan , Rudrapatna Suresh , Mallya Meenakshi , Rubin Harvey , Yano Takahiro , Mdluili Khisi , Cooper Christopher B. , Balasubramanian V. , Sambandamurthy Vasan K. , Ramachandran Vasanthi , Shandil Radha , Kavanagh Stefan , Narayanan Shridhar , Iyer Pravin , Mukherjee Kakoli , Hosagrahara Vinayak P. , Solapure Suresh , Hameed P Shahul , Ravishankar Sudha
Published: March 2016

2,4-Diaminoquinazolines, 2,4-diaminoquinolines and aminopyrazolopyrimidines, inhibitors of mycobacterial ATP synthesis, are novel lead molecules towards discovery and development of new anti-tubercular agents.
Structural studies of malonaldehyde–glyoxal and malonaldehyde–methylglyoxal etheno adducts of adenine nucleosides based on spectroscopic methods and DFT-GIAO calculations
Authors: Salus Kinga , Hoffmann Marcin , Wyrzykiewicz Bożena , Pluskota-Karwatka Donata
Published: March 2016

The substitution position in the etheno rings of M1Gx-A and M1MGx-dA was determined based on the comparison of data derived from NMR spectra with results obtained from computational calculations.
The structural characterization and biological activity of sulfamethoxazolyl-azo-p-cresol, its copper(ii) complex and their theoretical studies
Authors: Sahu Nilima , Das Dipankar , Mondal Sudipa , Roy Suman , Dutta Paramita , Sepay Nayim , Gupta Suvroma , López-Torres Elena , Sinha Chittaranjan
Published: March 2016

Sulfonamide-azophenol and its copper(ii) complex exhibit antimicrobial activity and interaction with DNA. Molecular docking was used to determine the mechanism of drug action.
Selective oxidation of alcohols by supported gold nanoparticles: recent advances
Authors: Sharma Anuj S. , Kaur Harjinder , Shah Dipen
Published: March 2016

The review presents a commercially important field of alcohol oxidation using gold nanoparticles. It systematically discusses scope and limitation of various supports on the activity and selectivity of catalyst.
One-step synthesis of Nb-doped TiO2 rod@Nb2O5 nanosheet core–shell heterostructures for stable high-performance lithium-ion batteries
Authors: Yu Xiao , Xin Ling , Liu Yong , Zhao Wenxia , Li Baojun , Zhou Xiang , Shen Hui
Published: March 2016

Conceptually novel Nb-doped TiO2@Nb2O5 core–shell heterostructures were obtained by one-step hydrothermal synthesis through sequential growth of Nb-doped TiO2 core and Nb2O5 shell structures.
Enhancement of oxygen reduction reaction activities by Pt nanoclusters decorated on ordered mesoporous porphyrinic carbons
Authors: Hwang Sun-Mi , Choi YongMan , Kim Min Gyu , Sohn Young-Jun , Cheon Jae Yeong , Joo Sang Hoon , Yim Sung-Dae , Kuttiyiel Kurian A. , Sasaki Kotaro , Adzic Radoslav R. , Park Gu-Gon
Published: March 2016

The high cost of Pt-based membrane electrode assemblies (MEAs) is a critical hurdle for the commercialization of polymer electrolyte fuel cells (PEFCs).
Silver nanoparticles/polyethyleneimine/graphene oxide composite combined with surfactant film for construction of an electrochemical biosensor
Authors: Wu Hai , Huang Deqian , Jin Xiaoyan , Luo Chunhua , Dong Qiujing , Sun Bangjin , Zong Ruimei , Li Jingcao , Zhang Lei , Zhang Hong
Published: March 2016

The combination of silver nanoparticles/polyethyleneimine/graphene oxide composite and surfactant film for investigating direct electrochemistry and electrocatalysis of hemoglobin.
Simplifying microfluidic separation devices towards field-detection of blood parasites
Authors: Holm S. H. , Beech J. P. , Barrett M. P. , Tegenfeldt J. O.
Published: March 2016

By the integration of multiple deterministic lateral displacement arrays of specific depths we present a simple-to-use diagnostics device, actuated by a simple syringe, aimed at point-of-care detection of blood parasites.
Direct and quasi-direct band gap silicon allotropes with remarkable stability
Authors: He Chaoyu , Zhang Chunxiao , Li Jin , Peng Xiangyang , Meng Lijun , Tang Chao , Zhong Jianxin
Published: March 2016

Promising low energy direct or quasi-direct band gap semiconductors for solar cell application.
Spatial effects of oxovanadium-immobilized mesoporous silica on racemization of alcohols and application in lipase-catalyzed dynamic kinetic resolution
Authors: Sugiyama Koji , Oki Yasuhiro , Kawanishi Shinji , Kato Katsuya , Ikawa Takashi , Egi Masahiro , Akai Shuji
Published: March 2016

The nano-scale pores of mesoporous silica and their polar environment accelerate the racemization to make the lipase/oxovanadium combo-catalysed DKR applicable to a wider range of alcohols.
An automated microreactor for semi-continuous biosensor measurements
Authors: Buffi Nina , Beggah Siham , Truffer Frederic , Geiser Martial , van Lintel Harald , Renaud Philippe , van der Meer Jan Roelof
Published: March 2016

An automated microreactor for culturing bactosensor cells for subsequent sample exposure gives excellent possibilities for on-line consecutive measurements.
The squaramide-catalyzed asymmetric Michael/cyclization tandem reaction for the synthesis of chiral trifluoromethylated hydroxyimino tetrahydrobenzofuranones
Authors: Liu Wei , Lai Xiaoyan , Zha Gaofeng , Xu Yan , Sun Panpan , Xia Tao , Shen Yongcun
Published: March 2016

This paper presents efficient access to chiral hydroxyimino tetrahydrobenzofuranones featuring a trifluoromethyl group at an all-carbon quaternary stereocenter.
A fluorescence-enhanced inorganic probe to detect the peptide and capsid protein of human papillomavirus in vitro
Authors: Zhang Teng , Fu Ding-Yi , Wu Yuqing , Wang Yizhan , Wu Lixin
Published: March 2016

A europium-substituted polyoxometalate (EuW10) could be used as a fluorescence-enhanced probe to detect the recombinant HPV L1 protein in vitro.
Downstream processing of microalgal feedstock for lipid and carbohydrate in a biorefinery concept: a holistic approach for biofuel applications
Authors: Karemore Ankush , Sen Ramkrishna
Published: March 2016

Downstream processing of algal biomass for conversion into biofuel products biodiesel and bioethanol in an integrated mode to develop a microalgae based biorefinery.
Ultrafast synthesis of stabilized gold nanoparticles using aqueous fruit extract of Limonia acidissima L. and conjugated epirubicin: targeted drug delivery for treatment of breast cancer
Authors: Kumar C. Senthil , Mahesh Ayyavu , Antoniraj M. Gover , Vaidevi S. , Ruckmani K.
Published: March 2016

Green synthesis of AuNPs using extract ofLimonia acidissimaL. as a reducing agent. Epirubicin was successfully loaded on folic acid–AuNPs. This formulation revealed better site specific delivery of epirubicin to MCF-7 cells.
Nitrogen-modified biomass-derived cheese-like porous carbon for electric double layer capacitors
Authors: Wang Keliang , Cao Yuhe , Gu Zhengrong , Ahrenkiel Phil , Lee Joun , Fan Qi Hua
Published: March 2016

Lignin, an abundant biomass constituent in nature, was modified by pyrrole to produce nitrogen-doped porous carbon.
Confinement of an electron-capturing unit within an electron-donating framework for X-ray detection
Authors: Zhang Hao , Sheng Tianlu , Hu Shengmin , Zhuo Chao , Fu Ruibiao , Wen Yuehong , Li Haoran , Wu Xintao
Published: March 2016

A novel X-ray-induced photochromic metal–organic complex was constructed by confining an electron-capturing unit within the cavity of an electron-donating framework.
Aided Electrophysiology Using Direct Audio Input: Effects of Amplification and Absolute Signal Level
Authors: Chun Ingyu , Billings Curtis J. , Miller Christi W. , Tremblay Kelly L.
Published: March 2016

Purpose

This study investigated (a) the effect of amplification on cortical auditory evoked potentials (CAEPs) at different signal levels when signal-to-noise ratios (SNRs) were equated between unaided and aided conditions, and (b) the effect of absolute signal level on aided CAEPs when SNR was held constant.

Method

CAEPs were recorded from 13 young adults with normal hearing. A 1000-Hz pure tone was presented in unaided and aided conditions with a linear analog hearing aid. Direct audio input was used, allowing recorded hearing aid noise floor to be added to unaided conditions to equate SNRs between conditions. An additional stimulus was created through scaling the noise floor to study the effect of signal level.

Results

Amplification resulted in delayed N1 and P2 peak latencies relative to the unaided condition. An effect of absolute signal level (when SNR was constant) was present for aided CAEP area measures, such that larger area measures were found at higher levels.

Conclusion

Results of this study further demonstrate that factors in addition to SNR must also be considered before CAEPs can be used to clinically to measure aided thresholds.
W‐band dual‐channel receiver with active power divider and temperature‐compensated circuit
Authors: Lee S. , Lee S. , Park H. , Kim W. , Kwon H. , Jeong J. , Kwon Y.
Published: March 2016

A W‐band dual‐channel receiver is presented for the frequency‐modulated continuous wave radars. In order to improve the isolation between two RF channels, a compact active power divider is implemented by a dual‐output local oscillator (LO) amplifier. The temperature‐compensated circuit also mitigates the gain variation of the receiver according to the ambient temperature. The fabricated receiver integrated circuit shows a conversion gain of 16 dB, a noise figure of 6.4 dB, and an input 1 dB compression point of −13.4 dBm at RF frequency of 76.5 GHz and LO input power of −1 dBm. The channel‐to‐channel isolation is >33 dB and the conversion gain variation is as low as −0.031 dB/°C between −40 and 120°C. This is the first temperature‐compensated multi‐channel receiver demonstration in W‐band.
Clutter attenuation‐stable normalised least‐mean fourth for PBR
Authors: Zhang Yuping , Li Yunjie , Wei Yuyu , Li Wenjing
Published: March 2016

The stable normalised least‐mean fourth (SNLMF) algorithm is developed in the passive bistatic radar (PBR) system to realise the interference cancellation. The larger power of the reference signal may lead to the poor convergence rate. By replacing the reference signal vector with the instantaneous echo signal, the concept of the clutter attenuation (CA) is introduced in the SNLMF algorithm, and the CA‐SNLMF algorithm is proposed to provide a fast convergence. The real measured data collected from the PBR system demonstrate that the proposed CA‐SNLMF algorithm has a faster convergence speed and better cancellation performance than the SNLMF algorithm.
Composite materials for microwave devices using additive manufacturing
Authors: Bukhari S.S. , Whittow W.G. , Zhang S. , Vardaxoglou J.C.
Published: March 2016

Additive manufacturing has been combined with commercially available RF materials to synthesise composite materials whose relative permittivity can be controlled. A design equation for predicting the effective permittivity of these composite materials has also been presented. The relative permittivity of the composite materials was measured by fabricating patch antennas using these materials as the substrate. It has been demonstrated that by using Taconic, polyactic acid (PLA) and air, three materials with different dielectric constants, a large and nearly continuous range of relative permittivity values, from 1.47 to 6.00, can be realised.
Compact microstrip lowpass filter with wide stopband and very‐sharp roll‐off
Authors: Hayati M. , Akbari M. , Salahi R.
Published: March 2016

A novel microstrip lowpass filter (LPF) with good specifications such as wide stopband and sharp roll‐off is reported. The filter structure consists of split ring resonator loaded by folded polygene patches. The proposed filter with −3 dB cut‐off frequency at 1.57 GHz has been designed, fabricated and measured. The LPF has a wide stopband from 1.67 to 14 GHz with a rejection level greater than −20 dB, sharp roll‐off rate equal to 170 dB/GHz and low insertion loss lower than 0.13 dB in 94% of the passband. Finally, a high figure of merit of 51,178 is obtained.
Source and physical‐layer network coding for correlated two‐way relaying
Authors: Huo Qiang , Song Lingyang , Li Yonghui , Jiao Bingli
Published: March 2016

In this paper, the authors study a half‐duplex two‐way relay channel with correlated sources exchanging bidirectional information. In the case, when both sources have the knowledge of correlation statistics, a source compression with physical‐layer network coding scheme is proposed to perform the distributed compression at each source node. When only the relay has the knowledge of correlation statistics, the authors propose a relay compression with physical‐layer network coding scheme to compress the bidirectional messages at the relay. The closed‐form block error rate expressions of both schemes are derived and verified through simulations. It is shown that the proposed schemes achieve considerable improvements in both error performance and throughput compared with the conventional non‐compression scheme in correlated two‐way relay networks.
Subcarrier and power allocation for multi‐user OFDMA wireless networks under imperfect channel state information
Authors: Liu Fei , Yang Qinghai , Gong Peng , Kwak Kyung Sup
Published: March 2016

In this study, the authors investigate subcarrier and power allocation for point‐to‐point data transmission under imperfect channel state information in multi‐user orthogonal frequency‐division multiple‐access (OFDMA) networks. The resource optimisation problem is formulated to handle inter competition (the resource competition among different users) and intra competition (the resource assignment between channel estimation and data transmission for each individual user). The authors employ the non‐cooperative game with pricing approach to solve the optimisation problem. By analysing optimal relationship between channel estimation cost and total occupied resource for each user, the two‐level resource competition is simplified to the problem including only inter competition, which is modelled as a non‐cooperative subcarrier and power allocation game with subcarrier pricing. In this game, the utility function is defined as the number of received data bits per joule of energy, which is associated with the estimate error and cost, the data transmit power and the number of data‐subcarriers. The authors prove the existence, uniqueness and Pareto efficiency of Nash equilibrium (NE) for the proposed resource allocation game. Furthermore, a distributed resource allocation algorithm is designed to achieve the NE.
Constant‐parameter synchronous machine model including main flux saturation
Authors: Therrien Francis , Chapariha Mehrdad , Jatskevich Juri
Published: March 2016

This paper presents a new general‐purpose state‐space synchronous machine model based on the voltage‐behind‐reactance (VBR) formulation which accounts for main flux saturation. The proposed model has a numerically efficient constant‐parameter decoupled RL branch interfacing circuit comprised of the stator and field windings. Consequently, the new model can be interfaced directly with arbitrary power networks and exciter circuits. The presented studies, executed using the Simulink toolbox PLECS, demonstrate the superior combination of numerical accuracy and efficiency of the new VBR model compared with existing state‐of‐the‐art models. As a result, the proposed model would be a desirable addition to the built‐in component libraries of many industry‐grade state‐variable‐based transient simulators.
Development of an outdoor photovoltaic module test platform
Authors: Ding Kun , Qin Siyu , Feng Li , Zhai Quanxin , Wang Xiang , Zhang Jingwei , Mao Jing
Published: March 2016

A new outdoor photovoltaic (PV) module test platform was introduced to measure I–V characteristic curve of PV module in this study. The proposed test platform was designed centring on the programmable electronic load (E‐load) which used the transfer characteristics of metal–oxide–semiconductor field‐effect transistor (MOSFET) and controlled PV module output current by controlling the drain current ID of MOSFET indirectly. Ultimately, controlling the PV module work on any operating point of the I–V curve. This test platform can automatically shift operation mode contraposing the I–V curve of PV module. It can continuously measure I–V curves and ambient data in the outdoors including the total irradiance, temperature of PV module back sheet and ambient temperature. The test results show the proposed test platform's accuracy meets the user's requirements, and more details of I–V curve can be obtained than by using traditional measurement mode.
Compensation of frequency selectivity and antenna effect for the energy detection Gaussian frequency‐shift keying ultra‐wideband system
Authors: Cui Song , Xiong Fuqin
Published: March 2016

The energy detection (ED) Gaussian frequency‐shift keying (GFSK) ultra‐wideband (UWB) system, transmits bit 0 and 1 using different‐order derivatives of the Gaussian pulse. The spectra of the two pulses are separated entirely in the frequency domain, so it generates the orthogonality of these two pulses. This orthogonality in the frequency domain makes the GFSK system more robust in multipath channels and in the presence of synchronisation errors, so it shows a better bit error rate performance than the ED pulse‐position modulation UWB system. However, the effect of frequency selectivity and antenna has not been discussed in earlier publications. In this study, the authors will analyse the effect of these two factors and propose a method to compensate the effect.
Photolithographically definable SU‐8–alumina composite for W‐band dielectric resonator antennas
Authors: Al‐Khalli Najeeb , Alduraibi Mohammad , Debbar Nacer , Saleem Muhammad , Alkanhal Majeed , Sebak Abdelrazik , Abdel‐Rahman Mohamed
Published: March 2016

A novel process has been developed for fabricating ceramic dielectric structures with dimensions applicable to W‐band millimetre wave dielectric resonator antennas. The ceramic dielectric structures are based on composites of SU‐8 2150 photoresist and alumina (Al2O3)‐alpha nanopowder. The effects of increasing the weight percentage of Al2O3 nanopowder on the photo‐polymerisation of the SU‐8–Al2O3 composite were systematically investigated. Cylindrical structures with thicknesses up to 500 µm have been fabricated using single casted conventional ultraviolet lithography. The relative permittivity of SU‐8–Al2O3 composites at different weight percentages of Al2O3 was studied showing an increase from a relative permittivity of 4.5 to 5.66 with increasing the Al2O3 weight percentage from 0 to 35%. Also, finally, double layer manufacturing of ceramic SU‐8–Al2O3 composite structures was demonstrated.
Equivalent mechanical boundary conditions for single layer graphene sheets
Authors: Sadeghzadeh Sadegh
Published: March 2016

To describe and analyse mechanical structures due to external loads, equation of motion must be supplemented with appropriate boundary conditions. When nanomechanical structures (especially layered systems) are considered, satisfying the boundaries is more challenging. It may be essential to develop a specific methodology for any system in such scale and configuration. This work introduces a general approach for boundary conditions of monolayer graphene sheets as the most important part of future sensors and resonators in nanoelectromechanical systems. Comparing with the experiments, it has been demonstrated that the graphene sheets on the adhesive surfaces should be assumed as a hinged edge condition and not as a clamped one. As a result, inaccuracy of the commonly used rigid base as a clamped condition is proven due to comparison with a reported experiment. It is suggested that a flexible substrate can be replaced to have better accordance. A flexible silicon base with equilibrium distance equal to s = 2.5 Å and depth of potential well equal to ε = 0.02 eV is obtained as the best substrate for a square graphene sheet under doubly clamped edge conditions.
Alter Wein in neuen Schläuchen
Authors: Kirberger Petra
Published: March 2016

Der Mediziner und Stressforscher Tobias Esch hat ein Glücksbuch geschrieben. Die gute Nachricht: Glück kann trainiert und erzeugt werden. Die schlechte: Der Weg dahin ist weniger aufregend als die dazugehörige Forschung. „Das Fazit: Keine Drogen, weniger Stress, mehr Entspannung, mehr Bewegung, mehr ‚Körper‘, weniger grübeln.”
Rhön-Fresenius – Der Beginn einer neuen Ära
Authors: Schmidt Hartmut
Published: March 2016

Die Nachricht ist eingeschlagen wie eine Bombe: Fresenius möchte die Rhön-Klinikum AG übernehmen. Während die Rhön-Aktie steigt, reagiert der Markt bei Fresenius verhalten. Doch unabhängig vom Kursverlauf: Mit dem Deal würden die Karten im Gesundheitswesen neu gemischt.
Ein Quantum ist zu wenig
Authors: Wehmeier Axel
Published: March 2016

Telemedizin ist technisch kein Problem, volkswirtschaftlich sinnvoll, patientenorientiert, Lösung für den Ärztemangel auf dem Land – auch und vor allem in Hinblick auf den demografischen Wandel. Warum also ist sie hierzulande so unpopulär, fragt sich Axel Wehmeier.
Mit Fleiß kein Preis
Authors: Mühlnikel Ingrid
Published: March 2016

Ein Teil der Krankenhäuser in Deutschland ist besonders produktiv. So produktiv, dass sie sich dem Verdacht aussetzen, Patienten unnötig unters Messer zu bringen. Die Kliniken versuchen ihrerseits, einem starren Preissystem zu entkommen, um am Markt zu überleben.
Drei Modelle
Authors: Mühlnikel Ingrid
Published: March 2016

Eine gesetzliche Regelung zur Mengenbegrenzung kommt noch vor der Sommerpause.
Was moderne Klinikmanager raten
Authors: Gaede Kirsten
Published: March 2016

Verlangen die Chefärzte zu viel von einer kaufmännischen Leitung? Stammen ihre Erwartungen aus dem Land der Utopie? Offenbar nicht.
„Chefärzte fühlen sich kontrolliert“
Authors: Gaede Kirsten
Published: March 2016

Klinikmanager dürfen Chefärzte durchaus mit Zahlen konfrontieren. Aber auf das Wie kommt es an, meint der Autor der aktuellen Chirurg-Manager-Umfrage des Berufsverbands Deutscher Chirurgen.
Nie mehr Franzbranntwein!
Authors: Dorner Carola
Published: March 2016

Sie optimiert die Pflegequalität, stellt schädliche Rituale infrage und motiviert die Mitarbeiter: die evidenzbasierte Pflege. Doch sie zu etablieren, ist aufwendig. Nicht jede Klinik hat die Mittel für eine Pflegewissenschaftlerin. Für kleine Häuser gibt es allerdings Alternativen.
Immer nach vorn
Authors: Dirks Claudia
Published: March 2016

Ein Leben wie ein Roman: nicht immer heiter, manchmal gar tieftraurig, tragisch und beängstigend. Doch immer pragmatisch bis optimistisch, gerade heraus. Sie war erst Sekretärin und ist heute die Geschäftsführende Gesellschafterin der Segeberger Kliniken. Weil sie es sich zugetraut hat.
Sparen mit energieeffizienten Filtern
Authors: Thalmayr Maria
Published: March 2016

Verbandsnachrichten der FKT - Fachvereinigung Krankenhaustechnik (e. V.). Diese Seiten sind nur als PDF-Dokument verfügbar.
Wir beeinflussen die Zukunft
Authors: Gstir Diethard
Published: March 2016

Verbandsnachrichten der ÖVKT - Österreichischer Verband der Krankenhaustechniker. Diese Seiten sind nur als PDF-Dokument verfügbar.
UKE reduziert Zahl der Studienabbrecher
Authors: Schaupp Karolina
Published: March 2016

Das Hamburger Universitätsklinikum Eppendorf (UKE) vergibt seine Medizinstudienplätze seit 2008 mittels eines selbstentwickelten Verfahrens. Dieses ist sehr aufwendig, doch es lohnt sich offenbar.
Saarland will vorangehen
Authors: Mau Jens
Published: March 2016

Das Saarland will noch dieses Jahr ein „ Landesgremium zu sektorenübergreifenden Versorgungsfragen“ einrichten.
Kleinere Brötchen backen
Authors: Mühlnikel Ingrid
Published: March 2016

Die sektorenübergreifende Versorgung ist ein mühsames Geschäft. Erste Blütenträume sind ausgeträumt. Dennoch wird sie von einigen Akteuren im Gesundheitswesen beharrlich weiterentwickelt.
Am Limit
Authors: Gaede Kirsten
Published: March 2016

Mundpflege, Lagerung, kontinuierliche Überwachung. Dinge wie diese fallen auf Intensivstation aus Zeitmangel immer häufiger aus. Das gefährdet die Patientensicherheit und vertreibt besonders die erfahrenen Mitarbeiter.
Trend zu High Convenience
Authors: König Romy
Published: March 2016

Vorgegart angeliefertes Essen gilt als sehr günstig und gesund. Die „Frischküche“ dagegen halten viele nur noch für eine romantische Idee.
Noch nicht gesättigt
Authors: König Romy
Published: March 2016

Große Wachstumsraten im Klinik-Catering sind passé. Der Investitionsstau dürfte Anbietern aber in die Hände spielen.
Neuer Idealismus
Authors: König Romy
Published: March 2016

Caterer versuchen, mit „Nachhaltigkeit“ als Verkaufsargument zu punkten. Dabei sind Kliniken oft noch reserviert.
Startschuss für die vierte Ausgabe
Authors: Horn Norbert
Published: March 2016

Verbandsnachrichten der FKT - Fachvereinigung Krankenhaustechnik (e. V.). Diese Seiten sind nur als PDF-Dokument verfügbar.
„Ärzte dürfen sich nicht unter Druck setzen lassen“
Authors: Gaede Kirsten
Published: March 2016

Es ist ruhiger um das Thema Transplantation geworden. Doch die Angst vor weiteren Skandalen bleibt. Chefs von Kliniken mit Transplantationszentren fragen sich, was sie tun können, um Manipulation in ihrem Hause zu verhindern.
Keine Chance für Dr. Frankenstein
Authors: Weber Michael
Published: March 2016

Wie können wir uns schützen? Das fragen sich viele Klinikchefs nach dem Fall des holländischen Arztes Ernst J. im Klinikum Heilbronn. Es gibt nur eine Antwort auf diese Frage, meint Personalvermittler Michael Weber: ein nationales Arztregister.
Die neuen Helfer
Authors: Geisendorf Nicklas
Published: March 2016

IT-Hersteller arbeiten unter Hochdruck am perfekten Zusammenspiel verschiedener Warnsysteme und Wissensdatenbanken. Die intelligente Software soll helfen, Patienten vor Fehlern von Ärzten und Pflegekräften zu schützen – doch es gibt Akzeptanz-Probleme.
Die Zukunft klopft an
Authors: Dirks Claudia
Published: March 2016

Die Malteser sind nicht nur altes Erbe, sie sind in Deutschland auch rund 22.000 Mit­arbeiter und 44.000 aktive Ehrenamtliche an 700 Standorten im sozialen Umfeld. Um sich den Anforderungen der Zukunft besser stellen zu können, wurde jetzt ein Hybrid-Cloud-Ansatz realisiert, der im Gesundheitswesen seinesgleichen sucht. Ein Status-Bericht.
Geschäftsmodell Herzchirurgie
Authors: Dirks Claudia
Published: March 2016

In der Sana Herzchirurgie Stuttgart arbeiten Kardiochirurgen und externe Kardiologen zusammen, wenn es um minimalinvasive Aortenklappen-Implantationen geht. Eine gewinnbringende Zusammenarbeit – mit viel Potenzial für die Zukunft.
Verlaufen unmöglich
Authors: Kucera Martin
Published: March 2016

Wer große medizinische Einrichtungen zum ersten Mal besucht, verläuft sich leicht und findet sein Ziel oft erst nach längerem Suchen. Deshalb setzt das Alice Hospital in Darmstadt zur Orientierung seit August 2012 neben dem klassischen auch auf ein digitales Wegeleitsystem, das sich sogar mit dem Smartphone nutzen lässt.
„Seit dem Ärztemangel hat sich vieles verbessert”
Authors: Sickinger Nina
Published: March 2016

Zuerst möchte ich mich dem Umgang mit den Patienten widmen: Dieser ist in Deutschland wirklich sehr gut.
Jetzt sind die Pflegekräfte dran
Authors: Ekkernkamp Axel
Published: March 2016

Dass Niedergelassene mit Politik und Politikern hart ins Gericht gehen, ist bekannt und scheinbar unausrottbar.
„Warum? Die Kliniken sind gut ausgestattet“
Authors: Gaede Kirsten
Published: March 2016

Eine geregelte Fachkräfte-Quote für Stationen – sie wird seit Jahrzehnten diskutiert. Nun hat die Linke den Bundestag aufgefordert, eine Mindestpersonalbemessung zu beschließen. Doch in der Anhörung des Gesundheitsausschusses sprachen sich die meisten Verbände dagegen aus.
Online-Augentherapie für Kinder
Authors: Dirks Claudia
Published: March 2016

Für Amblyopie-Patienten mit einem schwachen Auge gab es bislang nur eine Therapie: das Tragen eines Augenpflasters über zwei Jahre.
Praxistipps von alten Hasen
Authors: Dorner Carola
Published: March 2016

Früher war ein Chefarzt ein Chefarzt. Heute ist er nicht nur Ärztlicher Leiter seiner Abteilung, sondern im Nebenberuf Manager. Das hat er aber nicht gelernt. Acht erfahrene Chefärzte bieten nun mit einem Management-Handbuch wertvolle Unterstützung.
Ein perfekter Landrat
Authors: Zehnder Adalbert
Published: March 2016

Nirgendwo gibt es so viele kommunale Krankenhäuser wie in Bayern. Jedes Zweite davon schreibt rote Zahlen, nur jedes sechste blickt optimistisch in die Zukunft. Am Klinikum Augsburg ist das anders.
Ende der Ein-Mann-Show
Authors: Mau Jens
Published: March 2016

Saftige Gehaltserhöhungen im Zwei-Jahres-Rhythmus sind für Klinikärzte zum Alltag geworden. Die Arbeitsbelastung ist allerdings immer noch extrem hoch. Im Interview erklärt der neue MB-Chefverhandler Christian Twardy, was er im Gegensatz zu seinem Vorgänger Lutz Hammerschlag anders machen will.
Die Zeit ist reif für eine moderne IT
Authors: Egert Gabriele
Published: March 2016

Pathologie ist eine aussterbende Disziplin in Deutschland. Dabei sind die Fachärzte gefragter denn je, das Fach auf dem Sprung in die Popularität dank der Heilsversprechen der personalisierten Medizin. Das stellt auch neue Ansprüche an die Software.
So viel Geld bringt Ihnen unsere Uniklinik!
Authors: Mau Jens
Published: March 2016

Unikliniken bekommen jährlich viele Millionen Euro aus den Länderhaushalten. Doch die Länder profitieren auch von ihnen. Die Uniklinik Dresden hat ausrechnen lassen, wie viel Steuern Sachsen dank der Klinik einnimmt. kma sprach mit Armin Töpfer von der TU Dresden, der die Wertschöpfungsanalyse für die Uniklinik Dresden erstellt hat.
Zahlst du noch, oder handelst du schon?
Authors: Stiller Eileen
Published: March 2016

Angesichts der heiklen Finanzlage vieler Kliniken schlägt die Stunde des Leasings. Die Finanzierungsvariante ist flexibel, bilanzneutral, liquiditätsschonend, effizient und verbessert das Rating.
Fit für die Zukunft
Authors: Stiller Eileen
Published: March 2016

Weltweit wird immer mehr Medizintechnologie geleast. Auch in Deutschland geben Klinikchefs ihre Skepsis gegen das Leasen auf. Für die Leasinganbieter entwickelt sich der Gesundheitsmarkt zur lukrativen Nische.
Wo sind sie geblieben?
Authors: Murzin Gunter
Published: March 2016

Nie zuvor gab es Zeiten, in denen so viele Informationen auf den Einzelnen eingeströmt sind wie in der unsrigen. In der Vielfalt liegt jedoch nicht immer der Segen.
Für die Forschung freigegeben
Authors: Mau Jens
Published: March 2016

Ab Februar 2014 können Forschungseinrichtungen auf Morbi-RSA-Daten zugreifen. Die Versorgungsforschung könnte das einen guten Schritt nach vorne bringen.
Klinikarbeit stresst vor allem junge Ärzte
Authors: Gaede Kirsten , Kucera Martin
Published: March 2016

Die Mehrzahl aller Krankenhausärzte leidet unter negativem Stress am Arbeitsplatz, berichten Arbeitsmediziner in der „DMW Deutsche Medizinische Wochenschrift” (Thieme Verlag). Vor allem jüngere Assistenzärzte geben in einer Umfrage in Baden-Württemberg an, dass die hohen Anforderungen und ihr persönlicher Einsatz im Missverhältnis zur Belohnung und der Eigenständigkeit am Arbeitsplatz stünden.
Hessens erstes kommunales Aktionsbündnis
Authors: Kucera Martin
Published: March 2016

Mit dem „Klinikverbund Hessen“ haben Kliniken deutschlandweit erstmals einen Verband zur Interessenvertretung gegründet, dem öffentlich-rechtliche Krankenhäuser wie auch die Spitzenverbände in Hessen angehören.
Die Anhängerschar wächst
Authors: Gaede Kirsten
Published: March 2016

Sollte der Passus zur Qualitätssicherung im Koalitionsvertrag umgesetzt werden, müssen sich Krankenhäuser auf eine externe Qualitätsmessung mit Routinedaten einstellen. Angst vor Risikopatienten brauchen sie trotzdem nicht haben: Eine detaillierte Adjustierung scheint möglich.
Mannheimer Versuchsballon
Authors: König Romy
Published: March 2016

Mitarbeiter bewerten ihre Führungskräfte – in der Klinikbranche gelten 180-Grad-Feedbacks als revolutionär. Die Universitätsmedizin Mannheim hat sich dennoch an dieses Personalentwicklungsinstrument herangetraut. Ein Versuch mit Hindernissen, von dem andere Häuser viel lernen können.
Maschinen alleine reichen nicht
Authors: Kucera Martin
Published: March 2016

Die Skandale um verunreinigtes Sterilgut in München, Kassel oder Fulda haben das Thema in die Öffentlichkeit gerückt. Doch aus Furcht vor schlechter Presse halten sich viele Kliniken mit Auskünften bedeckt. Wir fragen einen Experten von außen, der freier reden kann.
„Hier funktioniert das Gesundheitssystem perfekt“
Authors: Sickinger Nina
Published: March 2016

Man lebt gefährlich auf Kameruns Straßen. Bei einem Unfall ist es im wahrsten Sinne des Wortes eine Frage des Schicksals, ob das Unfallopfer überlebt.
Sana holt den Einkauf in die Führungsspitze
Authors: Zehnder Adalbert
Published: March 2016

Es ist der dritte in diesem Jahr neu geschaffene Posten im nun zehnköpfigen Top-Management der drittgrößten deutschen Klinikkette: Adelheid Jakobs-Schäfer wird bei den Münchner Sana Kliniken Generalbevollmächtigte für Einkauf und Logistik.
Unnötiges Risiko
Authors: Weimer Tobias
Published: March 2016

Kliniken, die die Mindestmengenregelung für diffizile Eingriffe wie Knie-Endoprothesen-OPs nicht ernst nehmen, riskieren ihre Vergütung.
Carepaket von der Berufsgenossenschaft
Authors: Doelfs Guntram
Published: March 2016

Das tief in den roten Zahlen steckende Uniklinikum Halle (UKH) bekommt Hilfe von der Berufsgenossenschaft.
Wie haben Sie das gemacht, Herr Kreutzer?
Authors: Doelfs Guntram
Published: March 2016

Viele kommunale Krankenhäuser stecken tief in den roten Zahlen. Die Lahn-Dill-Kliniken in Hessen melden dagegen seit Jahren wachsende Überschüsse. Für Geschäftsführer Richard Kreutzer ist das vor allem eine Frage der richtigen Strategie.
Immer mehr Milliardenkonzerne
Authors: Schmidt Hartmut
Published: March 2016

Dies ist das Jahr der Boliden. Das liegt nicht nur an Fresenius Helios. Auch andere Verbünde sind enorm gewachsen – zum Beispiel Agaplesion.
Europas Frau für Herz und Nieren
Authors: Doelfs Guntram
Published: March 2016

Als sie sah, wie in eine frisch von ihr transplantierte Niere das Leben zurückkehrte, da spürte sie Magie. Die deutsche Urologin Undine Samuel hat als Ärztin selbst Spenderorgane verpflanzt. Jetzt ist sie zur Leiterin der Organvermittlungszentrale Eurotransplant im niederländischen Leiden avanciert.
„Jeder Patient wird in Schweden gleich behandelt“
Authors: Sickinger Nina
Published: March 2016

Während der vergangenen 34 Jahre habe ich bereits in vielen verschiedenen Ländern gelebt und gearbeitet, darunter in Schweden, Deutschland und den USA.
Nanoscale femtosecond imaging of transient hot solid density plasmas with elemental and charge state sensitivity using resonant coherent diffraction
Authors: Kluge T. , Bussmann M. , Chung H.-K. , Gutt C. , Huang L. G. , Zacharias M. , Schramm U. , Cowan T. E.
Published: March 2016

Here, we propose to exploit the low energy bandwidth, small wavelength, and penetration power of ultrashort pulses from XFELs for resonant Small Angle Scattering (SAXS) on plasma structures in laser excited plasmas. Small angle scattering allows to detect nanoscale density fluctuations in forward scattering direction. Typically, the SAXS signal from laser excited plasmas is expected to be dominated by the free electron distribution. We propose that the ionic scattering signal becomes visible when the X-ray energy is in resonance with an electron transition between two bound states (resonant coherent X-ray diffraction). In this case, the scattering cross-section dramatically increases so that the signal of X-ray scattering from ions silhouettes against the free electron scattering background which allows to measure the opacity and derived quantities with high spatial and temporal resolution, being fundamentally limited only by the X-ray wavelength and timing. Deriving quantities such as ion spatial distribution, charge state distribution, and plasma temperature with such high spatial and temporal resolution will make a vast number of processes in shortpulse laser-solid interaction accessible for direct experimental observation, e.g., hole-boring and shock propagation, filamentation and instability dynamics, electron transport, heating, and ultrafast ionization dynamics.