SPE/TLC/Densitometric Quantification of Selected Synthetic Food Dyes in Liquid Foodstuffs and Pharmaceutical Preparations by Anna W. Sobańska, Jarosław Pyzowski, Elżbieta Brzezińska

“…The extraction step was followed by thin layer chromatography on silica gel 60 with chloroform-isopropanol-25% aq. ammonia 1 : 3 : 1 (v/v/v) as mobile phase and the densitometric quantification of dyes was achieved using quadratic calibration plots (R2>0.997; LOQ = 0.04–0.09 μgspot−1). …”
Get full text

Komunikacja „cyfrowych tubylców” za pośrednictwem telefonu komórkowego by Joanna Dziekońska

“…The aim of the research was to advance the knowledge of how primary school third-formers communicate via the mobile phone, which is one of the most popular new media. …”
Get full text

Spatial Dynamic Wideband Modeling of the MIMO Satellite-to-Earth Channel by Andreas Lehner, Alexander Steingaß

“…A novel MIMO (multiple input multiple output) satellite channel model that allows the generation of associated channel impulse response (CIR) time series depending on the movement profile of a land mobile terminal is presented in this paper. Based on high precise wideband measurements in L-band the model reproduces the correlated shadowing and multipath conditions in rich detail. …”
Get full text

Abnormal Temperature and Bias Dependence of Threshold Voltage Instability in p-GaN/AlGaN/GaN HEMTs by Myeongsu Chae, Ho-Young Cha, Hyungtak Kim

“…In this work, we investigated the instability of threshold voltage (Vth) in p-GaN/AlGaN/GaN high electron mobility transistors (HEMTs) under positive gate biases and high temperatures. …”
Get full text

Outage probability and capacity analysis of distributed MIMO systems over a composite fading channel by Wen-jie PENG, Yue-heng LI, Tuan-jie XUE, Mei-yan JU, Ping HUANG

“…The exact closed-form expressions about the outage probability and capacity of distributed MIMO systems over a composite fading channel are derived firstly by using Lognormal approximation to complicated Gamma-lognormal distribution when mobile station (MS) in the cell is fixed at some position and the so-called maximum ratio transmission/selected combining (MRT-SC) and selected transmission/maximum ratio combining (ST-MRC) schemes are adopted in uplink and downlink respectively.Then based on a newly proposed non-uniform MS cell distribution model,which is more consistent with the MS cell hotspot distribution in an actual communication environment,the average outage probability and capacity formulas synthesizing the MS cell position information are further derived.Finally,the accuracy of the approximation method and the rationality of the corresponding theoretical analysis about the system performance are proven and illustrated by computer simulations.…”
Get full text

CHANGES TO RETAIL BUSINESS MODELS - OVERVIEW OF THE DETERMINING FACTORS by Maria Sławińska

“…They mainly involve the introduction of new solutions in terms of store formats, cooperation within the distribution channels, changes to the range of products and services offered and the use of mobile technologies.…”
Get full text

Lightweight multi-coupon system for multi-merchant environments with DAA by Xin LIU, Qiu-liang XU, Bo ZHANG

“…A multi-coupon system for multi-merchant environments was proposed by extending the DAA (direct anonymous attestation) scheme of Brickell etc.The new system bound the key elements in multi-coupon with the tamper-resistant TPM（trusted platform module）chip,so that it could prevent users from sharing behavior more effectively.By using the server-aided signature verification of Chow etc,the self-blindable credential technique of Yang etc,and range proof of Peng etc,the new system does not require customers to perform expensive pairing operations in the issue protocol and the redeem protocol.Compared with previous similar systems,the new system simultaneously satisfies several ideal properties and it is compatible with the mobile payment framework on the ARM TrustZone platform.Moreover,it has obvious advantages in aspects of communication and computation costs.…”
Get full text

Historical Population Database of Transylvania. Sources, Particularities, Challenges, and Early Findings by Luminița Dumănescu, Mihaela Hărăguș, Angela Lumezeanu, Elena Crinela Holom, Nicoleta Hegedűs, Daniela Mârza, Diana Covaci, Ioan Bolovan

“…The database has already been employed in a wide-ranging series of analyses conducted on datasets extracted from HPDT, which include infant and adult mortality, nuptiality and age at first marriage, social mobility, and the medicalization of childbirth. The wealth of information it includes will enable many more scientific investigations. …”
Get full text

Plant and Pest Diagnosis and Identification through DDIS by Jiannong Xin, Lyle J. Buss, Carrie Lapaire Harmon, Pete Vergot, Marc S. Frank, William J. Lester

“…This 4-page document discusses typical DDIS hardware and camera, the DDIS process, sample types, user roles, DDIS for Extension clientele, and DDIS Mobile. Written by J. Xin, L. Buss, C. Harmon, P. …”
Get full text

Electrical Response of CdS Thin Film and CdS/Si Heterojunction to Gamma Radiation by M. R. Balboul, A. Abdel-Galil, I. S. Yahia, A. Sharaf

“…In addition, γ-irradiation was used to change the sign of Hall coefficient, RH, of CdS thin film from negative to positive irrespective of temperature. The Hall mobility mechanism shows noticeable change after γ-irradiation from decreasing to increasing with raising the temperature. …”
Get full text

Trajectory Planning and Simulation of 6-SPU Parallel Robot by Wencai Liu, Yong Xu, Jiali Chen, Zheng Liang

“…Finally, the virtual model of this mechanism is created in SolidWorks software and the planning trajectory is verified through simulation in Simulink simulation module in MATLAB modeling simulation, and the theoretical foundation for the engineering design of mobile parallel processing platform is provided.…”
Get full text

Performance Comparison Between Ray Tracing Channel Model and IEEE 802.11ad Channel Model in 60 GHz Band by Dongbo Li, Zaixue Wei, Lin Sang

“…Now millimeter wave communication and large scale MIMO, 3D MIMO technology have become the research hotspot in the field of mobile communication. IEEE 802.11ad channel model, which is widely concerned in MIMO 3D scenario, is the empirical based on the measuring of the channel. …”
Get full text

Compact Dual-Band Planar Inverted-e-Shaped Antenna Using Defected Ground Structure by Wen Piao Lin, Dong-Hua Yang, Zong-De Lin

“…Finally, the good performances of the proposed antenna can highly promote for mobile device applications.…”
Get full text

Secrecy analysis for orthogonal time frequency space technique based LEO satellite communication by Zan LI, Junfan HU, Bing LI, Jia SHI, Jiangbo SI

“…In order to improve the security performance of low earth orbit (LEO) satellite downlink communication system, a cooperative UAV was employed to send jamming signals against the eavesdroppers.In particular, the downlink transmission was based on the orthogonal time frequency space (OTFS) technique to combat the severe Doppler effect caused by the high mobility of the LEO satellite.The closed form expression for the security outage probability (SOP) was derived at the legitimate receiver, where a novel moment matching approach was used for finding a summed probability distribution function (PDF) of the shadowed-Rician (SR) distributed terms.Simulation results prove that the SOP performance advantage of the downlink LEO satellite communication achieved by OTFS over OFDM scheme, and show the effectiveness of employing unmanned aerial vehicle (UAV) jammer in terms of enhancing secrecy transmission.…”
Get full text

Fault-Tolerant Partition Resolvability of Cyclic Networks by Kamran Azhar, Sohail Zafar, Agha Kashif, Michael Onyango Ojiema

“…The interaction and interconnection between devices, sensors, and service providers have opened the door for an eruption of mobile over the web applications. Structure of web sites containing number of pages can be represented using graph, where web pages are considered to be the vertices, and an edge is a link between two pages. …”
Get full text

Research of embedding algorithm for wireless network virtualization by Bin CAO, Shi-chao XIA, Fang HE, Yun LI

“…Wireless network virtualization has become one of the promising techniques in fifth generation mobile networks (5G),and the virtual network embedding plays a very important role.A model was formulated to describe the problem and a wireless virtual network embedding algorithm based on joint bandwidth and power allocation (WVNEA-JBP) was put forward,which selected the suitable node and path to serve the data transmission from virtual networks.In order to minimize the overhead while satisfy the higher capacity request,this algorithm considered the impact of interference of wireless links and supports path splitting.A case study was introduced to show how WVNEA-JBP to work.Furthermore,simulation results show that WVNEA-JBP is able to accomplish the efficient utilization of network resources and improve the accept rate of virtual network requests.…”
Get full text

Quasi-topological fractons: a 3D dipolar gauge theory by Erica Bertolini, Alberto Blasi, Nicola Maggiore

“…Moreover, we find an interesting physical interpretation, which consists in a generalized planar electromagnetism and in the emergence of two vector charges with restricted mobility. These are typical fractonic behaviours which can be related to the so-called traceless scalar and vector charge theories.…”
Get full text

Study on the Impact of LDA Preprocessing on Pig Face Identification with SVM by Hongwen Yan, Yulong Wu, Yifan Bo, Yukuan Han, Gaifeng Ren

“…These findings suggest that LDA preprocessing significantly enhances the efficiency of individual pig identification using an SVM, providing empirical evidence for the deployment of SVM classifiers in mobile and embedded systems.…”
Get full text

Research on Architecture of LEO Satellite Internet of Things and Key Technologies by Xiaojin DING, Tao HONG, Rui LIU, Wentao PENG, Gengxin ZHANG

“…First, we analyzed the composition and demand characteristics of LEO satellite IoTs, and designed an architecture of LEO satellite IoTs.Second, to extracted characteristics of electromagnetic environment and channel, we studied electromagnetic environment and channel sensing methods through constructing neural network model.Then, we investigated an active terminal-identifi cation method for detecting active terminals.Finally, considered multiple-input multiple-output as the main approach to improved the capacity of terrestrial mobile communication systems, we explored a pair of algorithms of mining satellite spatial resources for realizing the collision mitigation and capacity improvement of LEO IoT terminals.Simulation results showed that the designed method sofmining spatial-domain resources could mitigated eff ectively signal collisions among IoT terminals, and improved signifi cantly the concurrent accessing number of LEO satellite IoT terminals.…”
Get full text

Crónica de una migración anunciada : las migraciones de retorno a las raíces de argentinos en Galicia (España) a principios del siglo XXI by Sofía Laíz Moreira

“…After trying to understand the historical elements that explain migrations between both social spaces, this paper presents the results of a research work that searched for understanding the migration projects of sixteen family’ groups, paying special attention to their intergenerational social mobility strategies by migration. To do so, a tridimensional analysis of macro, meso and micro sociological determinants has been developed, taking into account the fundamental influence of the social contex variable on migrants’ social integration pathways.…”
Get full text