bluuebunny/crossref_metadata_2025_split huggingface dataset:
Data Mining as Support to Knowledge Management in Marketing
Authors: Zekić-Sušac Marijana , Has Adela 
Published: October 2015

Abstract

Background: Previous research has shown success of data mining methods in marketing. However, their integration in a knowledge management system is still not investigated enough.

Objectives: The purpose of this paper is to suggest an integration of two data mining techniques: neural networks and association rules in marketing modeling that could serve as an input to knowledge management and produce better marketing decisions.

Methods/Approach: Association rules and artificial neural networks are combined in a data mining component to discover patterns and customers’ profiles in frequent item purchases. The results of data mining are used in a web-based knowledge management component to trigger ideas for new marketing strategies. The model is tested by an experimental research.

Results: The results show that the suggested model could be efficiently used to recognize patterns in shopping behaviour and generate new marketing strategies.

Conclusions: The scientific contribution lies in proposing an integrative data mining approach that could present support to knowledge management. The research could be useful to marketing and retail managers in improving the process of their decision making, as well as to researchers in the area of marketing modelling. Future studies should include more samples and other data mining techniques in order to test the model generalization ability.
Industry Productivity Growth: A Network Perspective
Authors: Teng Joe , Wu Dazhong , Smith Fran 
Published: October 2015

Abstract

Background: This study investigates the determinants of industrial productivity growth from a network perspective.

Objectives: The research focuses on the influence on a focal industry’s productivity growth by its partner industries’ productivity growth, and the impact of the focal industry’s position in the supply chain network.

Method/Approach: The paper models the economy as a customer-supplier industry network and empirically investigates how a focal industry’s multifactor productivity is influenced by the productivities of industries that are connected to it, and how this influence is moderated by its position in the network.

Results: Based on a balanced panel dataset of 55 industries from the United States Bureau of Economic Analysis (BEA) input-output accounts, the results indicate that a focal industry’s productivity growth is positively associated with its partner industries’ productivity growth, and that industries with higher centrality in the network tend to have higher productivity growth.

Conclusions: The study concludes with a discussion on the implications of the findings and the contribution to the productivity literature. Several directions for further research were identified.
Patterns of Structural Change in the New EU Member States
Authors: Havlik Peter 
Published: October 2015

Abstract
This paper analyses the extent and impact of structural changes on aggregate economic growth that occurred in European economies during the past two decades, focusing on the new EU Member States of Central and Eastern Europe. After presenting some stylised facts related to employment and output restructuring, we use a conventional shift and share analysis in order to evaluate the impact of broader sectoral shifts on GDP growth, focusing on the period 1995–2011. A decomposition of aggregate GDP/GVA growth using the shift and share analysis shows a distinct North-South pattern of growth and restructuring while the previous NMS-OMS divisions are becoming less relevant. In the North, manufacturing and trade have fuelled growth whereas in the South there has been much less structural change. Apart from these differences, our results partly differ from earlier findings of similar analyses for the NMS. Finally, we analyse differentiated impacts of the recent (2008–2011) crisis on structural changes in Europe and find interesting similarities between (groups of) NMS and OMS in terms of both growth patterns and responses to the crisis.
Application of remote sensing techniques for the identification of biotic stress in plum trees caused by the Plum pox virus
Authors: Krezhova Dora , Stoev Antoniy , Petrov Nikolay , Maneva Svetla 
Published: October 2015

Abstract
Two hyperspectral remote sensing techniques, spectral reflectance and chlorophyll fluorescence, were used for the identification of biotic stress (sharka disease) in plum trees at an early stage without visible symptoms on the leaves. The research was focused on cultivars that are widely spread in Bulgaria: ‘Angelina’, ‘Black Diamond’ and ‘Mirabelle’. Hyperspectral reflectance and fluorescence data were collected by means of a portable multichannel fibre-optics spectrometer in the visible and near infrared spectral ranges (400-1000 nm). Statistical and deterministic analyses were applied for assessing the significance of the differences between the spectral data of healthy (control) and infected plum leaves. Comparative analyses were performed with complementary serological test DAS-ELISA, broadly implemented in plant virology. The strong relationship that was found between the results from the two remote sensing techniques and serological analysis indicates the applicability of hyperspectral reflectance and fluorescence techniques for conducting health condition assessments of vegetation easily and without damage before the appearance of visible symptoms.
Life Estimation and Creep Damage Quantification of Service Exposed Reformer Tube
Authors: Raj A. , Roy N. , Roy B.N. , Ray A.K. 
Published: October 2015

AbstractThis paper deals with evaluation of creep damage of ~11 years service exposed primary hydrogen reformer tube made of HP-40 grade of steel in a petrochemical industry, which has been carried out in terms of Kachanav’s continuum damage mechanics (CDM) model (K-model) and Bogdanoff model (B-model) based on Markov process. Residual life of the tubes was estimated based on hot tensile, conventional creep deformation under identical test conditions, optical microscopy and fractography. Accumulation of damage due to creep has been quantified through microstructural studies. The as received tubes did not reveal any degradation in the material like creep cavitation or voids, but there was indeed loss of tensile strength from room temperature to 870°C for the bottom portion of the tube due to ageing and overheating. Scatter in creep deformation behaviour of the material is probably due to variation in mode of fracture and scatter in voids. From statistical point of view, Weibull distribution pattern for analysing probability of rupture due to void area shifts with increase in true strain towards the higher population of void. The estimation of mean time to reach a specific damage state from K- model and B-model is in close agreement with that of experimental data and can describe the sudden changes of the creep damage in the tertiary region as well. A remnant life of >10 years is estimated at the operating stress–temperature conditions of the top as well as bottom portion of the tube.
The Pin-Loaded Small One-Bar Specimen in Use to Determine Uniaxial and Multiaxial Creep Data
Authors: Ali Balhassn S. M. 
Published: October 2015

AbstractTwo novel small specimen creep testing techniques are presented in this paper. The pin-loaded small one-bar specimen (OBS) and the small notched specimen with four loading pins (SNS4) are designed to determine the remaining lifetime for the high-temperature components. The small OBS is suitable for use in obtaining both uniaxial creep strain and creep rupture life data and the SNS4 is designed to obtain the multiaxial behaviour using small material samples. The specimens can be made from small material samples removed from the component surface or from the heat-affected zone. The specimens can be loaded through pin connections for testing. A conversion relationship and conversion factor have been obtained and used to convert the OBS creep data to the corresponding uniaxial data. For validation two materials have been used, P92 and P91 steels at 650°C. The advantages of these testing techniques are highlighted; the recommendations for future research are also given.
Crystallization Behavior and Growing Process of Rutile Crystals in Ti-Bearing Blast Furnace Slag
Authors: Zhang Wu , Zhang Li , Li Yuhai , Li Xin 
Published: October 2015

AbstractThe aim of the present work is to elucidate crystallization and growing process of rutile crystals in Ti-bearing blast furnace slag. The samples were taken from the liquid slag and quenched at once at elevated temperatures in order to analyze phase transaction of titanium and grain size of rutile crystals. Crystallization and growing kinetics of rutile crystals under elevated temperature conditions were calculated, and the crystallization process of rutile crystals under isothermal conditions was expressed by Avrami equation. The effects of experimental parameters, such as experimental temperatures, SiO2 addition, cooling rate, crystal seed addition and oxygen flow, were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), the optimal conditions for rutile crystals to grow up were obtained. Distribution and movement state of rutile crystals in the slag were analyzed.
Interfacial Reactions between Alumina and Carbon Refractories and Molten Iron at 1,823 K
Authors: Ikram-ul-Haq Muhammad , Khanna Rita , Sahajwalla Veena 
Published: October 2015

AbstractHigh temperature interactions of alumina–carbon refractories with molten iron were investigated at 1,823 K in argon atmosphere. These studies were specifically focussed on the decomposition of alumina in the simultaneous presence of carbon and iron, and associated refractory degradation. Refractory mixtures were prepared by blending 90 wt% alumina with 10 wt% synthetic graphite; 5–15 wt% iron powder was then mixed with the refractory mixture. Using phenol formaldehyde as a binder, pellets were prepared from various blends; these were heat treated at 1,823 K for 30 min in Ar atmosphere. The presence of molten iron significantly enhanced the decomposition of alumina resulting in an enhanced refractory degradation as well as the formation of a new reactant product. This product was identified as a Fe–Al intermetallic phase from SEM/EDS (scanning electron microscopy/energy-dispersive spectroscopy) and x-ray microdiffraction investigations.
Bifurcation, Locking and Quasi-Period Synchronization in a Round-Coupling Laser System
Authors: Senlin Yan 
Published: October 2015

AbstractWe present a round-coupling laser system with two inverse injection semiconductor lasers and discuss nonlinear dynamics in the two lasers. We make an analysis in locking, synchronization and reverse synchronization of the two lasers. We find that the injection-coupling level determines dynamics and stability of the two lasers. Locking critical condition is successfully predicted. Quasi-period and dynamics in the two lasers are investigated by controlling the current, detuning and injection levels. Many bifurcate diagrams are illustrated via varying the controlling parameters. A route to chaos after bifurcation and quasi-period is described for the two lasers.
The Limit Deposit Velocity model, a new approach
Authors: Miedema Sape A. , Ramsdell Robert C. 
Published: October 2015

Abstract
In slurry transport of settling slurries in Newtonian fluids, it is often stated that one should apply a line speed above a critical velocity, because blow this critical velocity there is the danger of plugging the line. There are many definitions and names for this critical velocity. It is referred to as the velocity where a bed starts sliding or the velocity above which there is no stationary bed or sliding bed. Others use the velocity where the hydraulic gradient is at a minimum, because of the minimum energy consumption. Most models from literature are one term one equation models, based on the idea that the critical velocity can be explained that way.
Here the following definition is used: The critical velocity is the line speed below which there may be either a stationary bed or a sliding bed, depending on the particle diameter and the pipe diameter, but above which no bed (stationary or sliding) exists, the Limit Deposit Velocity (LDV). The way of determining the LDV depends on the particle size, where 5 regions are distinguished.
These regions for sand and gravel are roughly; very small particles up to 0.014–0.040 mm (d < δv
), small particles from δ
v
–0.2 mm, medium particles in a transition region from 0.2–2.00 mm, large particles > 2 mm and very large particles > 0.015·Dp
. The lower limit of the LDV is the transition between a sliding bed and heterogeneous transport. The new model is partly based on physics and correlates well with experiments from literature.
Dissolved oxygen and water temperature dynamics in lowland rivers over various timescales
Authors: Rajwa-Kuligiewicz Agnieszka , Bialik Robert J. , Rowiński Paweł M. 
Published: October 2015

Abstract
The impact of floodplain hydrology on the in-stream dissolved oxygen dynamics and the relation between dissolved oxygen and water temperature are investigated. This has been done by examining the time series of dissolved oxygen and water temperature coupled with meteorological and hydrological data obtained from two lowland rivers having contrasting hydrological settings. Spectral analysis of long-term oxygen variations in a vegetated river revealed a distinct scaling regime with slope ‘–1’ indicating a self-similar behaviour. Identical slopes were obtained for water temperature and water level. The same power-law behaviour was observed for an unvegetated river at small timescales revealing the underlying scaling behaviour of dissolved oxygen regime for different types of rivers and over various time scales. The results have shown that the oxygenation of a vegetated river is strongly related to its thermal regime and flow conditions. Moreover, analysis of short-term fluctuations in the unvegetated river demonstrated that physical factors such as rainfall and backwaters play a substantial role in the functioning of this ecosystem. Finally, the results show that the relation between water temperature and dissolved oxygen concentration at the diurnal timescale exhibits a looping behaviour on the variable plot. The findings of this study provide an insight into the sensitivity of rivers to changing hydro-physical conditions and can be useful in the assessment of environmental variability.
Changes in facial appearance from neonate to adult in 3-M syndrome patient with novel CUL7 gene mutations
Authors: Hasegawa Kosei , Tanaka Hiroyuki , Higuchi Yousuke , Yamashita Miho , Tsukahara Hirokazu 
Published: October 2015

Abstract3-M syndrome (OMIM #273750, #612921, and #614205) is a rare autosomal recessive growth disorder that is characterized by pre- and postnatal growth retardation, normal intelligence, and characteristic faces. This syndrome also has characteristic radiological features, such as slender long bones and tall vertebral bodies. Three genes, cullin 7 (
Impact of incorporation of chromium on electrochemical properties of LiFePO4/C for Li-ion batteries
Authors: Naik Amol , Zhou Jian , Gao Chao , Liu Guizhen , Wang Lin 
Published: October 2015

AbstractLiFe0.95Cr0.05PO4/C was successfully synthesized by one-step solid-state reaction using a single mode microwave reactor. The effect of incorporation of chromium on LiFePO4 lattice parameters was systematically investigated by X-ray diffraction. Surface analysis was done by scanning electron microscopy and transmission electron microscopy. The ratio of amorphous to graphitic carbon was determined from Raman spectroscopic data. The influence of chromium incorporation on electrochemical properties was studied by recording charge/discharge cycles combined with electrochemical impedance spectroscopy (EIS) and cyclic voltammetry. It was found that Cr incorporation significantly enhanced the electrochemical performance of LiFePO4 at all current densities up to 10 C. LiFe0.95Cr0.05PO4/C prepared exhibited the best performance with an initial specific discharge capacity of 157.7, 144.8, 138.3, 131.0, 124.1 and 111.1 mAh·g−1 at 0.1 C, 0.5 C, 1.0 C, 2.0 C, 5 C and 10 C, respectively. The doped sample displayed excellent capacity retention, which was substantially superior than that of pristine LiFePO4/C at a higher current rate.
Optical separation and controllable delivery of cells from particle and cell mixture
Authors: Li Yuchao , Xin Hongbao , Cheng Chang , Zhang Yao , Li Baojun 
Published: October 2015

Abstract Cell separation and delivery have recently gained significant attention in
biological and biochemical studies. In thiswork, an optical method for
separation and controllable delivery of cells by using an abruptly tapered fiber
probe is reported. By launching a laser beam at the wavelength of 980 nm into
the fiber, a mixture of cells with sizes of ~5 and ~3 μm and poly(methyl
methacrylate) particles with size of 5 μm are separated into three chains along
the direction of propagation of light. The cell and particle chains are
delivered in three dimensions over 600 μm distance. Experimental results are
interpreted by numerical simulations. Optical forces and forward migration
velocities of different particles and cells are calculated and discussed.
Hybrid fluid-quantum coupling for the simulation of the transport of partially quantized particles in a DG-MOSFET
Authors: Jourdana C. , Vauchelet N. 
Published: October 2015

AbstractThis paper is devoted to numerical simulations of electronic transport in nanoscale semiconductor devices forwhich charged carriers are extremely confined in one direction. In such devices, like DG-MOSFETs, the subband decomposition method is used to reduce the dimensionality of the problem. In the transversal direction electrons are confined and described by a statistical mixture of eigenstates of the Schrödinger operator. In the longitudinal direction, the device is decomposed into a quantum zone (where quantum effects are expected to be large) and a classical zone (where they are negligible). In the largely doped source and drain regions of a DG-MOSFET, the transport is expected to be highly collisional; then a classical transport equation in diffusive regime coupled with the subband decomposition method is used for the modeling, as proposed in N. Ben Abdallah et al. (2006, Proc. Edind. Math. Soc. [7]). In the quantum region, the purely ballistic model presented in Polizzi et al. (2005, J. Comp. Phys. [25]) is used. This work is devoted to the hybrid coupling between these two regions through connection conditions at the interfaces. These conditions have been obtained in order to verify the continuity of the current. A numerical simulation for a DG-MOSFET, with comparison with the classical and quantum model, is provided to illustrate our approach.
Pyrolysis characteristics and kinetics of β-cyclodextrin and its two derivatives
Authors: Zhu Guangyong , Xiao Zuobing , Zhou Rujun , Niu Yunwei 
Published: October 2015

Abstract
β-cyclodextrin (β-CD) and its derivatives have been widely used to prepare inclusion complexes. However, systematic research on their thermal stabilities, pyrolysis characteristics and kinetics has rarely been reported. In this paper, thermogravimetric analysis was employed to investigate β-cyclodextrin and its two derivatives, 2-Hydroxypropyl-β-cyclodextrin (HP-β-CD) and monochlorotriazinyl-β-cyclodextrin (MCT-β-CD). The pyrolysis characteristics and kinetic parameters were obtained. The results show that three stages can be distinguished during the heating process of the above three samples. The temperature of initial decomposition of HP-β-CD (309.5°C is higher than that of β-CD (297.8°C), while the temperature of initial decomposition of MCT-β-CD (231.4°C) is lower than that of β-CD. For the three cyclodextrins, the thermal stability in descending order is HP-β-CD, β-CD and MCT-HP-β-CD. The activation energy values are 350.6, 303.3 and 113.9 KJ/mol, and the pre-exponential factor values are 1.11×1031, 1.37×1026 and 1.39×1010 for β-CD, HP-β-CD and MCT-β-CD respectively.
Two-step treatment of harmful industrial wastewater: an analysis of microbial reactor with integrated membrane retention for benzene and toluene removal
Authors: Trusek-Holownia Anna , Noworyta Andrzej 
Published: October 2015

Abstract
Standards for highly toxic and carcinogenic pollutants impose strict guidelines, requiring values close to zero, regarding the degradation of such pollutants in industrial streams. In many cases, classic bioremoval processes fail. Therefore, we proposed a stream leaving the microbial membrane bioreactor (MBR) that is directed to an additional membrane separation mode (NF/RO). Under certain conditions, the integrated process not only benefits the environment but may also increase the profitability of the bioreactor operation. An appropriate model was developed and tested in which the bioremoval of benzene and toluene by Pseudomonas fluorescens was used as an example. This paper presents equations for selecting the operation parameters of the integrated system to achieve the expected degree of industrial wastewater purification.
Thermoplastic elastomers containing 2D nanofillers: montmorillonite, graphene nanoplatelets and oxidized graphene platelets
Authors: Paszkiewicz Sandra , Pawelec Iwona , Szymczyk Anna , Rosłaniec Zbigniew 
Published: October 2015

Abstract
This paper presents a comparative study on which type of platelets nanofiller, organic or inorganic, will affect the properties of thermoplastic elastomer matrix in the stronger manner. Therefore, poly(trimethylene terephthalate-block-poly(tetramethylene oxide) copolymer (PTT-PTMO) based nanocomposites with 0.5 wt.% of clay (MMT), graphene nanoplatelets (GNP) and graphene oxide (GO) have been prepared by in situ polymerization. The structure of the nanocomposites was characterized by transmission electron microscopy (TEM) in order to present good dispersion without large aggregates. It was indicated that PTT-PTMO/GNP composite shows the highest crystallization temperature. Unlike the addition of GNP and GO, the introduction of MMT does not have great effect on the glass transition temperature of PTMO-rich soft phase. An addition of all three types of nanoplatelets in the nanocomposites caused the enhancement in tensile modulus and yield stress. Additionally, the cyclic tensile tests showed that prepared nanocomposites have values of permanent set slightly higher than neat PTT-PTMO.