bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improvement the Performance of MIMO Channel Employing Concatenation (BCH –STBC) Codes.
Authors: Thaher Raad H. , Abed Muntadher S. 
Published: August 2020

Abstract
Wireless communication system has been matured as a key technique to realize high data rates, more handling power, and optimizing 5G applications to increase users rapidly. Due to the issues of fading, it is difficult to obtain high data rates and maximum capacity. Different coding schemes have been implemented to contend the effect of fading. Multiple – input multiple-output (MIMO) technology remains robust technology besides channel coding. Here in this research paper, concentrate on employing the available resources in the wireless communication system to enhance the performance of the MIMO system when concatenated STBC code with forward error correction (FEC) code, such as (BCH) code without additional power or further bandwidth. The outcomes show the coding technique gives better improvement in the BER and obtain good coding gain when using BCH(31,16)-STBC, BCH(127,106)-STBC the coding gain is about 5.8 dB,3.7 dB consecutively under AWGN channel and improved by 13.25 dB, 9 dB successively under Rayleigh fading channel at BER about 10−3, when compared with uncoded system. Additionally, this research manifests that the proposed model gives the improvement in BER performance about (5% to 86%)over AWGN channel and (6% to 100%) over Rayleigh fading channel when compared with the uncoded system.
Adaptive Fuzzy Logic Control of Hybrid, Active Power Filters, for Harmonic Mitigation
Authors: Yasin Mohammed W. , Abdullah Al Bakry Ali Abdul Abbas , Sultan Ahmed Jasim 
Published: August 2020

Abstract
In industrial applications which include power systems, it notices that, harmonics which generated due to nonlinear load (power electronic switches) cause issues for the power quality. Generally, the rectifiers accounted as one of the main elements which produce currents harmonics, where these harmonics will transmit through power system and the generated harmonic distortion will be led to enormous issue and damage for the equipment’s. This study deals with hybrid active filter that consist of shunt active power filter(APF) and passive power filter(PPF) in series with grid based on the instantaneous active and reactive current component (id–iq) control strategy to calculate the reference signal of compensation current which is needed to cancelled the non-linear load current. Furthermore, this new technique method handles with adaptive fuzzy logic control with proportional integral control(PI) to obtain perfect controllable dc input of the inverter across capacitor. Therefore, ac output voltage of active power filter with assist of passive power filter is the desirable value in magnitude and frequency, this led to achieve a perfect attenuation of harmonics, where both harmonics and reactive power are compensating. The simulation results show that, the new control method is very effective to reduce harmonic and improve power quality.
A Smart Embedded System for Humid Air Condensation and Water Harvesting
Authors: Mohammad M A , Abid A J , Farhood A D 
Published: August 2020

Abstract
The people in the south of Iraq in the coastal region of the Arabian Gulf, especially in the Basra government, are suffering from waves of high humidity throughout the year, average annual humidity of 60.6 %. The increment of salinity of the Shatt-Al-Arab river, the main source of the drinking water in this city, effected by the gulf water caused a lack of drinking water. What made matters worse is the frequent power outages caused by many reasons, one of these reasons that Basra considers one of the highest temperature cities in the world. For that, it is required to design an efficient device to harvest the water from the air to reduce the humidity and consider as a source for drinking water, taking into consideration it’s adopting a renewable source of energy. This article is presenting a low cost, portable, power-efficient, multi-purpose device that able to harvest water from the air efficiently. The results show a promising prototype that able to reduce significantly the relative humidity (RH), produce water, and consumed low power, with overall efficiency 40%-60%.
Characteristics of Selected Off-Street Parking in AL-Mansour Neighborhood / Baghdad
Authors: Al-Tamimi Ali M , Asmael Noor Moutaz 
Published: August 2020

Abstract
Car Parking is an important problem occurs in attracted zones in Baghdad city. Al-Mansour neighborhood is a commercial center in Baghdad city, which highly attract people from various zones. Limited parking spaces are provided in this area leads to appearance of traffic problems. Al-Mansour neighborhood is the study area that was chosen for surveying its parking (off-street parking). The purpose of the study is evaluating of characteristics of off street parking in Al-Mansour city. Four parking was selected, three located nearby AL-Mansour Mall and the others nearby Babylon Mall. From the results showed that PI of P4 is 103.33%, that mean demand is more than supply. The license plate method is used for collected data that used in assessing characteristics of parking in area such as parking duration, peak hours and parking turnover. Two kinds of data are collected, first about site characteristics, and the second is about parking vehicles accumulation sketch. Collected data in this study is from surveying each park for two days at PM period, all the data collected manually.
Developing a pavement maintenance management system of multi-lane highway in Iraq
Authors: Hasan M A , Jrew B K , Abed F H , Msallam M S 
Published: August 2020

Abstract
Roads and highways are a major part of the transportation infrastructure in Iraq and play a substantial role in the local economy and community development. This research aims to develop a pavement maintenance management system (PMMS) for the highway which provides a systematic process of maintaining and upgrading the pavement and tools to facilitate a more flexible approach that can enable us to perform better tasks, more economically, effectively and of higher quality. The research study was conducted on a section of the main multi-lane highway in Baghdad, from Al-Dora intersection to Al-Mahmudiya district. The study area was divided into (20) sections. Each section divided into (40) sample units with size (250) m2. This highway is considered as a major highway with high traffic volume in Iraq. The updating Micro PAVER v.7.0.8 software was used for assessment and prediction of the condition of highway pavement and maintenance cost for existing conditions (Time of the study survey has occurred in 2018), the maintenance plan has been for short-term conditions (2018-2023) and medium-term conditions (2018-2027). The study shows that the PCI of the existing conditions was rating as (poor) with 90,434.00$ maintenance cost. The PCI of short-term condition was the rating (satisfactory) with 13, 497, 448, 00$ maintenance cost. The PCI of medium-term condition was the rating (good) with 18, 756, 142, 00$ maintenance cost. All highways in Iraq needs to be reconsidered for future maintenance plans to improve the quality of service of these facilities.
Enhanced asphalt mixture behavior by using khawa clay to resist deformation
Authors: Abedali Abdulhaq Hadi , Hameed Ebtehal Khalid 
Published: August 2020

Abstract
This paper aims to investigate the effect of adding bentonite (khawa clay) on the asphalt mixture response represented by reducing total accumulative deformation. Asphalt cement with penetration grade of (40-50) and optimum asphalt content of 4.9 was used. Bentonite with different percentages of (0%, 3%, 6%, and 9% by total weight of asphalt cement) was used. The asphalt mixtures were tested by uniaxial creep test under static load at two test temperature (40°C and,60°C) and the applied stress used 600 KPa. From the experimental result of rotational viscosity after and before the addition of bentonite at two temperatures 135°C and 165°C, it can be seen that the viscosity of the asphalt cement was enhanced when adding 9% of Khawa clay to around 126% percent of improvement in viscosity at 135°C and about 195% at 165°C. The improvement in the viscosity of asphalt leads to a decrease in the accumulative strain.
Prediction the Strength of Fibered Reinforced Concrete Pavement Using Response Surface Methodology: Parametric Study
Authors: Abdulridha Mundher A. , Salman Mohamed M. , Banyhussan Qais Sahib 
Published: August 2020

Abstract
Due to the pattern of load distribution in terms of load-carrying capacity, strength considered the major factor in design of pavement. For design the thickness of the rigid pavement, modulus of rupture (flexural strength) values used in the design procedure. The main purpose of the present study is to design optimum Eco-friendly concrete mixtures containing different amount of Fibers used in rigid pavement matching Iraqi requirements by using Response Surface Methodology (RSM). The experiments were designed using a thirty mixtures with four factors, namely, the cement content 300,400 and 500 kg/m3, Steel fiber (0,0.075, and 0.15 Vol.%), three different volume of Polypropylene fiber (0,0.35 and 0.7 Vol.%), and 0, 5, and 10% Silica fume by weight of cement. The results stated that cement amount and steel fiber volume are the higher factors affecting the mechanical properties flowed by pp fiber and silica. Furthermore, a good correlation between the adopted variables and mechanical properties (compressive and flexural strength) was found through statistical models, where the correlation coefficients (R2) for all models were greater than 0.90. Optimal components to design concrete mixtures used in pavement that having compressive strength of (>30 Mpa) and flexural; strength of (> 4.1 Mpa) are cement 375 kg/m3, silica fume 0.002%, steel fiber 1.44e-005 (Vol.%), and PP fiber 4.53e-006(Vol.%).
Oxide films resistance to hydrogen penetration in VT6 titanium alloy
Authors: Gvozdeva O N , Shalin A V , Stepushin A S 
Published: August 2020

Abstract
The ability of hydrogen to penetrate through the oxide film formed during air-atmosphere annealing at elevated temperatures on VT6 titanium alloy samples was studied in this paper. It was investigated that oxide film prevents the penetration of up to 0.4 wt.% hydrogen. It was shown that it is possible to change the depth of hydrogen penetration and the surface layer structure by varying the amount of added hydrogen. It was determined that the formation of a finely dispersed surface structure after the thermal hydrogen treatment allows to increase the surface hardness by 8-10 HRC, compared to the center of material.
Thermal transformations in polymineral technogenic cement raw
Authors: Miryuk O A 
Published: August 2020

Abstract
The results of physicochemical studies of composition and thermal transformations of large-tonnage wastes of skarn-magnetite ore dressing in Kazakhstan are presented. To determine materials’ composition of the following methods were used: X-ray, differential and thermal, Mössbauer and infrared spectroscopy. The stepwise nature of transformation of anthropogenic material during firing, due to polymineral composition of ore dressing wastes is revealed. Provides information on the chemical and mineral composition, thermal transformations of ore dressing wastes. It has been established that the chemical-mineral characteristics of natural silicates determine formation processes and properties of clinker phases. The features of the formation of clinker phases with the participation of the technogenic component of the raw mix, which consist in the activity of low-temperature interactions, the variety of intermediate phases are revealed. It has been established that the staging of belite formation with the participation of actinolite, albite, andradite, grossular, diopside, chlorite, epidote is due to gradual transformations of minerals into intermediate phases C2AS, C3MS2, of which C2S is formed at temperatures of 1000-1300oC. Alite formation is intensified due to high-temperature belite formation and doping impurities. Skarn-magnetite ores wastes are an effective cement raw material, providing high-quality portland cement clinker using low-energy and resource-saving technology.
Hopping conduction in single crystals of the diluted magnetic semiconductor (Zn1-xFex)3As2 (x=0.005)
Authors: Zakhvalinskii V S , Pilyuk E A , Nikulicheva T B 
Published: August 2020

Abstract
Single crystals of the diluted magnetic semiconductor (Zn1-x
Fe
x
)3As2 (x = 0.005) were obtained by modified Bridgman method. According to the results of the X-ray powder diffractometry, the material was single-phased and isomorphic and corresponded to the pure Zn3As2 (x = 0.0). The research of the electroconductivity and the magnetoresistance was carried out at the temperature range from 10 to 300 K. It was found out that the electroconductivity in the temperature range 11 ÷ 19 K corresponded to the mechanism of the Mott type variable-range hopping conductivity. The microparameters, characterizing electroconductivity (Zn1-x
Fe
x
)3As2 (x = 0.005) at the temperature range of 11 ÷ 19 K, were defined.
Berry Phase in single crystals of the dilute magnetic semiconductor (Cd0.7Zn0.28Mn0.02)3As2
Authors: Zakhvalinskii V S , Nikulicheva T B , Pilyuk EA 
Published: August 2020

Abstract
Investigations of transverse magnetoresistance have been performed on single crystals of diluted magnetic sem iconductor (Cd0.7Zn0.28Mn0.02)3As2 (CZMA). Based on analysis of the Shubnikov-de Haas (SdH) oscillations, observed in the temperature range T = 4.2 ÷ 30 K and at transverse magnetic field B = 0 ÷ 11 T, the phase shift, β, indicating the presence of the Berry phase was determined.
Protocols for long-distance quantum communication with single 167Er ions
Authors: Asadi F Kimiaee , Wein S C , Simon C 
Published: August 2020

Abstract
We design a quantum repeater architecture using individual 167Er ions doped into Y2SiO5 crystal. This ion is a promising candidate for a repeater protocol because of its long hyperfine coherence time in addition to its ability to emit photons within the telecommunication wavelength range. To distribute entanglement over a long distance, we propose two different swapping gates between nearby ions using the exchange of virtual cavity photons and the electric dipole–dipole interaction. We analyze their expected performance, and discuss their strengths and weaknesses. Then, we show that a post-selection approach can be implemented to improve the gate fidelity of the virtual photon exchange scheme by monitoring cavity emission. Finally, we use our results for the swapping gates to estimate the end-to-end fidelity and distribution rate for the protocol.
Validation of projected length of the rotating gliding arc plasma using ‘regionprops’ function
Authors: Ananthanarasimhan J , Leelesh P , Anand M S , Lakshminarayana R 
Published: August 2020

Abstract
This work investigates the reliability of the function called ‘regionprops’ which is used for measuring the 2D length of the plasma discharge. Work was conducted in a Rotating Gliding Arc (RGA) reactor, using air as plasma forming gas. Arc rotational images at three different gas flow rates i.e. 5, 25 and 50 litres per minute

LPM

were captured using high speed camera with an exposure of 100 μs. A total of 6799 images from all the three flow rates were considered for analysis. The 2D length of the discharge was measured by two methods namely, (a) ‘regionprops’ function (Python) and (b) manual tracing (ImageJ). The 2D arclength measured using ‘regionprops’ function matched very closely to that measured by manual hand tracing technique using ImageJ tool. A linear relation between both the methods was observed for all the three flow rates, with the coefficient of determination i.e. R
2 > 0.9 . The validation of ‘regionprops’ function shown in this work marks an important step as the function is simple to use and adapt compared to any other techniques such as shortest–path algorithm.
Dimensionless parameter-based numerical model for double conical dielectric elastomer actuators
Authors: Farmer Carson , Medina Hector 
Published: August 2020

Abstract
As the development of soft actuators progresses, new methods for more agile actuator control are required. While there are hardware technologies that can provide such agility (e.g. field-programmable-gate-array electronics), mathematical models tend to slow the controlling processes. For the case of double conical dielectric elastomer actuators (DCDEAs), complex material and physical models are often utilized; however, such models require extended computational time which limits real-time control and prediction, especially in small, portable applications. The foregoing problem is augmented, if agile applications require reprogramming on the fly. In this work, a parameter-based dimensionless model applicable to DCDEAs was developed. The proposed model: (a) relates a dimensionless displacement with a characteristic dimensionless voltage via a power-law equation; (b) is robust enough to accurately describe 5-Degree-of-Freedom motion; (c) is scalable (at least within the range of geometries and parameters used in this study); (d) due to its mathematical simplicity, it could be used for more agile controls. For the development of the model, multiple DCDEAs were manufactured by varying design parameters such as pre-stretch, thickness, dielectric constant, shear modulus, electrode area, and inner and outer radii. By applying the Levenberg-Marquardt best-fit algorithm to experimental data sets containing voltage and (translational and rotational) displacements, a general relationship was found between parameter-based dimensionless quantities and a general dimensionless displacement. The relationship was further simplified via a single dimensionless number related to the actuator design. The model was found to be accurately predictive for VHB4910 and VHB4905. The resulting model is simple and has potential to be used for a wide range of dielectric-elastomer materials.
Development of pulmonary embolism in a nonhospitalized patient with COVID-19 who did not receive venous thromboembolism prophylaxis
Authors: Uppuluri Ellen M , Shapiro Nancy L 
Published: August 2020

Abstract

Purpose
Coronavirus disease 2019 (COVID-19) has been associated with thrombotic complications such as stroke and venous thromboembolism (VTE), and VTE prophylaxis for hospitalized patients with COVID-19 is recommended. However, extended postdischarge VTE prophylaxis and VTE prophylaxis for nonhospitalized patients with COVID-19 are not routinely recommended due to uncertain benefit in these populations.

Summary
Here we report development of a pulmonary embolism (PE) in a young patient without other VTE risk factors who was treated for COVID-19 in an emergency department (ED) and discharged home without VTE prophylaxis, which was consistent with current recommendations. The patient presented to the ED 12 days later with complaints of chest pain for 1 day and was found to have a PE within the segmental and subsegmental branches of the left lower lobe.

Conclusion
This case suggests that nonhospitalized patients with COVID-19 may be at higher risk for VTE than patients with other medical illnesses and warrants further research into the risk of VTE in outpatients with COVID-19.
unCOVERApp: an interactive graphical application for clinical assessment of sequence coverage at the base-pair level
Authors: Iovino Emanuela , Seri Marco , Pippucci Tommaso 
Published: August 2020

Abstract

Motivation
Next-generation sequencing is increasingly adopted in the clinical practice largely thanks to concurrent advancements in bioinformatic tools for variant detection and annotation. However, the need to assess sequencing quality at the base-pair level still poses challenges for diagnostic accuracy. One of the most popular quality parameters is the percentage of targeted bases characterized by low depth of coverage (DoC). These regions potentially ‘hide’ clinically relevant variants, but no annotation is usually returned with them. However, visualizing low-DoC data with their potential functional and clinical consequences may be useful to prioritize inspection of specific regions before re-sequencing all coverage gaps or making assertions about completeness of the diagnostic test. To meet this need, we have developed unCOVERApp, an interactive application for graphical inspection and clinical annotation of low-DoC genomic regions containing genes.

Results
unCOVERApp interactive plots allow to display gene sequence coverage down to the base-pair level, and functional and clinical annotations of sites below a user-defined DoC threshold can be downloaded in a user-friendly spreadsheet format. Moreover, unCOVERApp provides a simple statistical framework to evaluate if DoC is sufficient for the detection of somatic variants. A maximum credible allele frequency calculator is also available allowing users to set allele frequency cut-offs based on assumptions about the genetic architecture of the disease. In conclusion, unCOVERApp is an original tool designed to identify sites of potential clinical interest that may be ‘hidden’ in diagnostic sequencing data.

Availabilityand implementation
unCOVERApp is a free application developed with Shiny packages and available in GitHub (https://github.com/Manuelaio/uncoverappLib).

Supplementary information
Supplementary data are available at Bioinformatics online.
Machine Learning Model for Multi-View Visualization of Medical Images
Authors: Pradhan Nitesh , Singh Dhaka Vijaypal , Rani Geeta , Chaudhary Himanshu 
Published: August 2020

Abstract
Imaging techniques such as X-ray, computerized tomography scan and magnetic resonance imaging are useful in the correct diagnosis of a disease or deformity in the organ. Two-dimensional imaging techniques such as X-ray give a clear picture of simple bone deformity but fail in visualizing multiple fractures in a bone. Moreover, these lack in providing a multi-angle view of a bone. Three-dimensional techniques such as computerized tomography scan and magnetic resonance imaging present a correct orientation of fracture geometry. Computerized tomography scan is a collection of multiple slices of an image. These slices provide a fair idea about a fracture but fail in the measurement of correct dimensions of a fractured fragment and to observe its geometry. It also exposes a patient with carcinogenic radiations. Magnetic resonance imaging induces a strong magnetic field. So, it becomes ineffective for organs containing metallic implants. The high cost of three-dimensional imaging techniques makes them inaccessible for economic weaker section of society. The limitations of two- and three-dimensional imaging techniques motivate researchers to propose an innovative machine learning model ‘CT slices to $3$-D convertor’ that accepts multiple slices of an image and yields a multi-dimensional view at all possible angles from 0 degree to 360 degree for an input image.
CamRegBase: a gene regulation database for the biofuel crop, Camelina sativa
Authors: Gomez-Cano Fabio , Carey Lisa , Lucas Kevin , García Navarrete Tatiana , Mukundi Eric , Lundback Steve , Schnell Danny , Grotewold Erich 
Published: August 2020

Abstract
Camelina is an annual oilseed plant from the Brassicaceae family that is gaining momentum as a biofuel winter cover crop. However, a significant limitation in further enhancing its utility as a producer of oils that can be used as biofuels, jet fuels or bio-based products is the absence of a repository for all the gene expression and regulatory information that is being rapidly generated by the community. Here, we provide CamRegBase (https://camregbase.org/) as a one-stop resource to access Camelina information on gene expression and co-expression, transcription factors, lipid associated genes and genome-wide orthologs in the close-relative reference plant Arabidopsis. We envision this as a resource of curated information for users, as well as a repository of new gene regulation information.