bluuebunny/crossref_metadata_2025_split huggingface dataset:
User location prediction with energy efficiency model in the Long Term‐Evolution network
Authors: Qiao Yuanyuan , Yang Jie , He Haiyang , Cheng Yihang , Ma Zhanyu 
Published: January 2015

SummaryPredicting users' next location/place allows us to anticipate their future movement. It provides additional time to be ready for that movement and react consequently. Furthermore, many industries, including Internet Service Providers, are still requiring low cost and simple location/place prediction methods that can be implemented on mobile device. This paper studies domain‐independent prediction algorithms and spatio‐temporal based prediction method using 20‐day‐long records in Long Term‐Evolution(LTE) network, which captures the mobility patterns of 3474 individuals. After examining the prediction accuracy and resource consumption of domain‐independent prediction algorithms, we find Markov provides the best tradeoff. Furthermore, Active LeZi outperforms Markov if enough consecutive parsed patterns of users' history movement are captured. In addition, we further group users according to their spatio‐temporal entropy profiles in order to predict not only user's future locations but also the place he or she most likely to appear within a specific period. By applying the simple spatio‐temporal based method to each group of user, 83.3% accuracy can be achieved for some users. Yet Markov and Active LeZi algorithms perform better for some other users. This implies that we should consider applying different prediction methods to users with distinct spatio‐temporal characteristics. Copyright © 2015 John Wiley & Sons, Ltd.
Impacts of water level fluctuations on detritus accumulation in Lake Baiyangdian, China
Authors: Li Xia , Cui Baoshan , Yang Qichun , Lan Yan 
Published: January 2015

AbstractDecreases in water level could stimulate emergent plant growth and accelerate lake terrestrialization. To explore the impacts of hydrological variability on detritus accumulation in Lake Baiyangdian, a process‐based ecosystem model was applied to investigate how emergent plants affect lake terrestrialization under changing water levels. Results of this study suggested that the accumulation of Phragmites australis (P. australis) detritus is one of the main factors that promote terrestrialization, accounting for 1.8 mm yr−1 of sediment increase in the lake from 2001 to 2010. Water level and temperature were the primary drivers of detritus accumulation. The impacts of water level variability on detritus accumulation in Lake Baiyangdian were further investigated through scenario analysis. Results demonstrated that both annual and inter‐annual water level fluctuations could affect plant detritus accumulation. The scenario with low water level supported relatively high plant productivity and fast plant detritus accumulation, whereas the high water level scenario induced the lowest plant biomass production and slowest detritus accumulation. Enlarged inter‐annual water level fluctuations also caused an increase in both plant productivity and detritus accumulation. This study suggests that the terrestrialization processes of lakes can be mitigated through regulating lake water levels to reduce detritus accumulation. Copyright © 2015 John Wiley & Sons, Ltd.
Statistical procedures for developing earthquake damage fragility curves
Authors: Lallemant David , Kiremidjian Anne , Burton Henry 
Published: January 2015

SummaryThis paper describes statistical procedures for developing earthquake damage fragility functions. Although fragility curves abound in earthquake engineering and risk assessment literature, the focus has generally been on the methods for obtaining the damage data (i.e., the analysis of structures), and little emphasis is placed on the process for fitting fragility curves to this data. This paper provides a synthesis of the most commonly used methods for fitting fragility curves and highlights some of their significant limitations. More novel methods are described for parametric fragility curve development (generalized linear models and cumulative link models) and non‐parametric curves (generalized additive model and Gaussian kernel smoothing). An extensive discussion of the advantages and disadvantages of each method is provided, as well as examples using both empirical and analytical data. The paper further proposes methods for treating the uncertainty in intensity measure, an issue common with empirical data. Finally, the paper describes approaches for choosing among various fragility models, based on an evaluation of prediction error for a user‐defined loss function. Copyright © 2015 John Wiley & Sons, Ltd.
Errors caused by peak factor assumptions in response‐spectrum‐based analyses
Authors: Menun Charles , Reyes Juan C. , Chopra Anil K. 
Published: January 2015

SummaryThe modal combination rules commonly used in response spectrum analyses implicitly assume that the peak factor associated with the response quantity of interest is equal to the peak factors of the contributing modal responses. In this paper, we examine the validity of this assumption and demonstrate that it causes the modal combination rules to over‐represent the contribution of the higher modes of vibration to the total response and under‐represent the contribution of the lower modes. Consequently, a response‐spectrum‐based analysis can yield a biased estimate for the peak value of a response quantity when two or more well‐separated modal frequencies make significant contributions to the total response. To correct this potential bias in response‐spectrum‐based estimates, we develop a procedure for estimating the peak factors that is suitable to the response spectrum analysis calculations commonly used in the current design practice. Examples are presented to demonstrate the proper use and potential impact of the proposed procedure. Copyright © 2015 John Wiley & Sons, Ltd.
Molecular pathogenesis and targeted therapy of sporadic pancreatic neuroendocrine tumors
Authors: Capurso Gabriele , Archibugi Livia , Delle Fave Gianfranco 
Published: January 2015

AbstractOver the past few years, knowledge regarding the molecular pathology of sporadic pancreatic neuroendocrine tumors (PNETs) has increased substantially, and a number of targeted agents have been tested in clinical trials in this tumor type. For some of these agents there is a strong biological rationale. Among them, the mammalian target of rapamycin inhibitor Everolimus and the antiangiogenic agent Sunitinib have both been approved for the treatment of PNETs. However, there is lack of knowledge regarding biomarkers able to predict their efficacy, and mechanisms of resistance. Other angiogenesis inhibitors, such as Pazopanib, inhibitors of Src, Hedgehog or of PI3K might all be useful in association or sequence with approved agents. On the other hand, the clinical significance, and potential for treatment of the most common mutations occurring in sporadic PNETs, in the MEN‐1 gene and in ATRX and DAXX, remains uncertain. The present paper reviews the main molecular changes occurring in PNETs and how they might be linked with treatment options.
The impact of team familiarity and team leader experience on team coordination errors: A panel analysis of professional basketball teams
Authors: Sieweke Jost , Zhao Bin 
Published: January 2015

SummaryTo explore the dynamics involved in team coordination, we examine the impact of team familiarity and team leader experience on team coordination errors (TCEs). We argue that team familiarity has a U‐shaped effect on TCEs. We study the moderating effects of team leader prior experience and team leader team‐specific experience on the association between team familiarity and TCEs. We use panel data on teams from the National Basketball Association to test the hypotheses. Our findings support the U‐shaped relationship between team familiarity and TCEs and the moderating effect of team leader team‐specific experience on this relationship. The paper advances research on errors in organizations by analyzing the antecedents of TCEs, so far an underexplored empirical phenomenon. Moreover, it contributes to research on coordination in teams by empirically examining the interplay between formal and informal coordination mechanisms. Copyright © 2015 John Wiley & Sons, Ltd.
Understanding employee innovative behavior: Integrating the social network and leader–member exchange perspectives
Authors: Wang Xiao‐Hua (Frank) , Fang Yulin , Qureshi Israr , Janssen Onne 
Published: January 2015

SummaryBy integrating social network theory and leader–member exchange (LMX) theory, we explore the effects of three types of social relationships on employee innovative behavior: weak ties outside the group, LMX, and strong ties within the group. The results from a sample in a high‐tech firm showed that LMX fully mediated the positive relationship between out‐group weak ties and innovative behavior. Furthermore, within‐group strong ties negatively moderated the second stage of this indirect relationship, such that LMX was positively and significantly related to innovative behavior only when the number of within‐group strong ties was low. The theoretical and practical implications of these findings are discussed. Copyright © 2015 John Wiley & Sons, Ltd.
Fabrication of Multicomponent Polymer Nanostructures Containing PMMA Shells and Encapsulated PS Nanospheres in the Nanopores of Anodic Aluminum Oxide Templates
Authors: Ko Hao‐Wen , Chi Mu‐Huan , Chang Chun‐Wei , Su Chun‐Hsien , Wei Tzu‐Hui , Tsai Chia‐Chan , Peng Chi‐How , Chen Jiun‐Tai 
Published: January 2015

Multi‐component polymer nanomaterials have attracted great attention because of their applications in areas such as biomedicine, tissue engineering, and organic solar cells. The precise control over the morphologies of multi‐component polymer nanomaterials, however, is still a great challenge. In this work, the fabrication of poly(methyl methacrylate)(PMMA)/poly­styrene (PS) nanostructures that contain PMMA shells and encapsulated PS nanospheres is studied. The nanostructures are prepared using a triple solution wetting method with anodic aluminum oxide (AAO) templates. The nanopores of the templates are wetted sequentially by PS solutions in dimethylformamide (DMF), PMMA solutions in acetic acid, and water. The compositions and morphologies of the nanostructures are controlled by the interactions between the polymers, solvents, and AAO walls. This work not only presents a feasible method to prepare multi‐component polymer nanomaterials, but also leads to a better understanding of polymer‐solvent interactions in confined geometries.
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Type 1 diabetes and pregnancy: a phenomenological study of women's first experiences
Authors: Woolley Maria , Jones Colin , Davies Joanne , Rao Usha , Ewins David , Nair Sunil , Joseph Frank 
Published: January 2015

AbstractThe aims of this study were to explore women's perceptions and experiences of being pregnant and having pre‐existing type 1 diabetes mellitus, and to assess their physical, social, psychological, emotional and educational needs during their transition to motherhood.The qualitative design incorporated a purposive sample of seven women in their first pregnancy, who participated in one‐to‐one interviews with a researcher at 15–20 and 32–36 weeks gestation, and at 6–8 weeks post‐partum.Qualitative analysis identified seven key themes from the data including: knowledge; physical and psychological impact; control and trust; catalyst to action; organisation of care and communication; attendance and intervention; expectations and systems.This study has shown that most women with diabetes who become pregnant are resigned to the fact that their pregnancy is considered high risk, and are willing to play their part to achieve a positive pregnancy outcome. However, they would also like to ‘do the normal pregnant bit as well’, ‘normalise it and make it a nice experience’ and make it feel ‘less fragmented’. This woman‐centred experience of pregnancy care, in women with type 1 diabetes mellitus, may motivate health professionals to revise their approach to care, prompt them to utilise the skills of each individual member of the multidisciplinary team to its full strength and potential, and assist in the provision of a positive, balanced and more holistic approach to care, specific to this client group. Copyright © 2015 John Wiley & Sons, Ltd.
Dealing with diagnosis of diabetes
Authors: Nash Jen 
Published: January 2015

AbstractThe diagnosis of diabetes is both a life‐changing day for the person who receives it, and a challenging interaction for the time‐pressured health professional who delivers it. This article reviews the evidence of factors that facilitate a more helpful diagnosis conversation, describes the importance of this initial conversation on long‐term clinical outcomes, and offers suggestions drawn from psychological models on how to more effectively manage the diagnosis conversation.‘Empathic willingness’ has been found to both assist the professional to feel less frustrated, and improve the patient's experience and clinical outcomes in the long‐term. ‘Empathic willingness’ can be taught and fostered by clinical psychologists (or their equivalents) yet are absent in the majority of settings in which people with diabetes are cared for.While many health conditions allow us to treat the ‘body’, diabetes and other conditions that require self‐management demand that we treat the ‘person’ – including their emotions. The link between the lack of structured time in the care of our patients to attend to their psychology/emotions and the poor clinical outcomes/high ‘did not attend’ rates that we see in our NHS diabetes services is discussed. Copyright © 2015 John Wiley & Sons, Ltd.
Structured diabetes patient education in Scotland
Authors: McDowell Joan , MacRury Sandra 
Published: January 2015

AbstractThis article describes how Scotland is addressing the need to review structured diabetes education to support self‐management and record this on the national database.A National Education Coordinator (NEC) was appointed to lead the development of structured diabetes education. The NEC was supported by an education lead from the 14 health boards and representation from paediatric, minority ethnic and patient groups.Through literature searching, discussion, workshops and a consensus approach, the criteria for structured patient education were developed appropriate for the Scottish context. A process to review education programmes was established and reviewers trained in this role. Reviewers are professionals, patients and carers. Recording of education on the database utilises the process of education delivery. A website has been developed to host educational resources and signpost people to other appropriate information.Four reviewed education programmes meet structured patient education criteria. Patients attending these programmes have their attendance recorded on the national database. The website is regularly sourced.It was concluded that Scotland has a process to review patient education programmes as to whether they meet structured education criteria, and a process to record attendance at this education on its national database; the website continually updates staff and patients on educational initiatives. Copyright © 2015 John Wiley & Sons, Ltd.
Design and optimization of InGaN superluminescent diodes
Authors: Kafar Anna , Stańczyk Szymon , Wiśniewski Przemek , Oto Takao , Makarowa Irina , Targowski Grzegorz , Suski Tadek , Perlin Piotr 
Published: January 2015

The design process of superluminescent diode has been discussed on the basis of nitride diodes with bend‐waveguide geometry. The devices were fabricated by MOVPE technique on bulk GaN substrates and emitted light at the wavelength of around 420 nm. The effectiveness of the cavity suppression design was confirmed by measurements of high‐resolution emission spectra. Further optimization was carried out by appropriate selection of the angles of the waveguide bend and the chip length. Thus; we succeeded in fabrication of high optical power superluminescent diodes with slope efficiency fully comparable to that of laser diodes (greater than 0.9 W/A).Comparison of emission spectra of a superluminescent diode and a laser diode.
Improved Biba model based on trusted computing
Authors: Liu Gang , Zhang Jing , Liu Jinhui , Zhang Yuan 
Published: January 2015

AbstractBiba model is hard to implement because the rules are too strict to meet the flexibility of system. To enhance the flexibility, the low‐water‐mark policy based on the Biba model is proposed by supporting the dynamic change of subject tags. However, the biggest drawback of low‐water‐mark policy is that the integrity level of the subjects in a system decreases monotonously, which results that some subjects cannot access most of the objects and the system life cycle is cut down. An improved model is proposed based on the Biba model, which not only describes the infection degree of subjects by separating the subject into uninfected and infected subjects and introducing the confidence interval but also reduces the decline rate of integrity level of the subject and prolongs the life time cycle by adopting trusted computing to adjust subject tags. Theory analysis and experiment show that the improved model enhances the availability of system. Copyright © 2015 John Wiley & Sons, Ltd.
A second preimage attack on zipper hash
Authors: Chen Shiwei , Jin Chenhui 
Published: January 2015

AbstractThe zipper hash utilizes two‐pass hashing to strengthen the iterated hash functions against the generic attack. In this paper, we analyze the features of zipper hash and several existing generic attacks on hash functions. A new tree structure called inverse‐diamond, which starts from one fixed point and ends with many points, is exploited to guarantee that the corresponding message blocks in the two passes be identical. Then, combining the inverse‐diamond structure of depth l, with the multicollision of length n – l (n is bit number of the hash value) and the (k, 2k + k − 1)‐expandable message together, we firstly present a second preimage attack on zipper hash of which the time complexity is about O((2 k + n)2n/2 + 2n − k + (n − l)2n − l + 2l + 1), less than O(2n), and the memory complexity is about O(2k + 1 + 3*2l). Specially, if k = l = n/2, then the time complexity is about O(n2n/2), and the memory complexity is about O(2n/2). Copyright © 2015 John Wiley & Sons, Ltd.
A framework for protecting personal information and privacy
Authors: Zheng Hongying , Yuan Quan , Chen Jianyong 
Published: January 2015

AbstractUser's security and privacy are core issues of network applications. This paper proposes a privacy protection model to evaluate property risk of users, which takes into account both sensitivity of the property and requester's level of assurance. Furthermore, the sensitivity of the property is evaluated by problem of expectation–maximization algorithm. Experiments show that the optimal size of samples for EM is relatively small, which indicates the high efficiency of the algorithm. The proposed privacy protection model cannot only assist users to do correct authorization, but also benefit the privacy reservation of users in online service. Copyright © 2015 John Wiley & Sons, Ltd.
Polarizable force fields for molecular dynamics simulations of biomolecules
Authors: Baker Christopher M. 
Published: January 2015

Molecular dynamics simulations are well established for the study of biomolecular systems. Within these simulations, energy functions known as force fields are used to determine the forces acting on atoms and molecules. While these force fields have been very successful, they contain a number of approximations, included to overcome limitations in computing power. One of the most important of these approximations is the omission of polarizability, the process by which the charge distribution in a molecule changes in response to its environment. Since polarizability is known to be important in many biochemical situations, and since advances in computer hardware have reduced the need for approximations within force fields, there is major interest in the use of force fields that include an explicit representation of polarizability. As such, a number of polarizable force fields have been under development: these have been largely experimental, and their use restricted to specialized researchers. This situation is now changing. Parameters for fully optimized polarizable force fields are being published, and associated code incorporated into standard simulation software. Simulations on the hundred‐nanosecond timescale are being reported, and are now within reach of all simulation scientists. In this overview, I examine the polarizable force fields available for the simulation of biomolecules, the systems to which they have been applied, and the benefits and challenges that polarizability can bring. In considering future directions for development of polarizable force fields, I examine lessons learnt from non‐polarizable force fields, and highlight issues that remain to be addressed. WIREs Comput Mol Sci 2015, 5:241–254. doi: 10.1002/wcms.1215This article is categorized under:

Structure and Mechanism > Computational Biochemistry and Biophysics
Molecular and Statistical Mechanics > Molecular Mechanics
Molecular and Statistical Mechanics > Molecular Dynamics and Monte-Carlo Methods
Thermally Stable Coordination Polymer with Hybrid Functional Groups and Mn–SO4 Double Chains
Authors: Yang Qipeng , Yue Lihong 
Published: January 2015

AbstractA coordination polymer constructed from the ligand 2, 2′‐bipyridine‐5, 5′‐carboxylate (Bpydc) with hybrid functional groups and the co‐ligand SO42– was synthesized and structurally characterized by single‐crystal X‐ray diffraction. It shows an intriguing structure of parallel infinite Mn–SO4 double chains resulting from the coordination of SO42– groups to central MnII atoms. Further linkage of the Bpydc ligands with the Mn–SO4 double chains gave rise to a three‐dimensional pillar‐layer framework, in which the Mn–SO4 double chains act as pillars and the Bpydc ligands form the layers. Two types of hydrogen bonds are observed between the SO42– and carboxylate groups. The assembly of the Bpydc ligand and the SO42– co‐ligand with central MnII atoms results in a binodal (3, 5)‐connected network with a rare 3, 5T1 topology, confirming the feasibility of this strategy in constructing novel architectures. The formation of the dense pillar‐layer framework sustained by Mn‐SO4 double chains and hydrogen bonds enhances the stability of this coordination polymer and results in a high thermal stability up to 400°C.
The Preparation of a Residue‐free, Alumina‐supported Gold Catalyst by Decomposition of an Azido‐Gold(III) Complex and an Evaluation of the Effectiveness of the Catalyst for the Hydrogenation of Propyne
Authors: Lopez‐Sanchez Jose Antonio , Morisse Clément , Winfield John M. , Krumm Burkhard , Klapötke Thomas M. , Lennon David 
Published: January 2015

AbstractA 1 % w/w alumina‐supported gold catalyst is described that is prepared from the impregnation of alumina with a solution of ammonium tetraazidoaurate(III), NH4[Au(N3)4]. Decomposition of the azide precursor leads to a residue‐free catalyst comprised of well‐dispersed gold particles. This novel material is tested for propyne hydrogenation using pulse‐flow techniques and displays 100 % selectivity to the partial hydrogenation product, propene, albeit in the presence of a large retention of hydrocarbon by the catalyst. The latter characteristic is associated with a support‐mediated deactivation pathway. Comparing catalytic performance with a 1.45 % w/w Au/TiO2 reference catalyst indicates that chlorine‐free precursor compounds are not required to enhance catalytic activity for this particular reaction.