bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sparse minimum average variance estimation via the adaptive elastic net when the predictors correlated
Authors: Rahman Esraa , Alkenani Ali 
Published: August 2020

AbstractA new model-free variable selection method was proposed in this article, which is called SMAVE-AdEN. We combined the effective sufficient dimension reduction method MAVE with the variable selection method which is called adaptive Elastic Net (AdEN) to introduce SMAVE-AdEN. The SMAVE-AdEN produces a sparse and accurate estimate when the predictors are highly correlated. The advantage of SMAVE-AdEN is that SMAVE-AdEN extended Adaptive Elastic net (AdEN) to nonlinear and multi-dimensional regression. Also, the SMAVE-AdEN enables MAVE to work with problems were the predictors are highly correlated. In addition, SMAVE-AdEN can exhaustively estimate dimensions, while selecting informative covariates simultaneously. The performance of SMAVE-AdEN is evaluated by both simulation and real data analysis.
Domination Polynomial of the Composition of Complete Graph and Star Graph
Authors: Alwan Ihsan A. , Omran Ahmed A. 
Published: August 2020

Abstract
Graph domination by vertices is finding a subset D from the vertex set V(G), “in a graph G such that D is a dominating set if every vertex in set V – D is adjacent to at least one vertex in set D”, In this paper, D(G,i) when G is a composition of complete graph Kr and star graph S

m
, is constructed where “D(G,i), is the family of all dominating sets of a graph G with cardinality i and d(G,i) = |D(G, i)|”. A recursive formula for d(K
r[Sm
], i) is obtained. The domination polynomial of graph K
r[Sm
] is determined by using this recursive formula.
Comparison between Confine MO-Connectedness and Connectedness, Confine MO-Countability and Countability
Authors: Al-Abbasi Hasanain , Al-Swidi Luay A A 
Published: August 2020

Abstract
The main goal of this work is to introduce a comparison between connected and confine MO-connected space, locally connected and confine MO-locally connected space, extremally disconnected and confine MO-extremally disconnected space, confine MO-first countable space and first countable space, confine MO-second countable space and second countable space. New properties and relations are introduced.
On Certain Types of Topological Spaces Associated with Digraphs
Authors: Al’ Dzhabri Khalid Shea Khairallah , Hani Al’murshidy Mohammad Falih 
Published: August 2020

Abstract
In this work, we constructed a new types of topological structures by associated with digraphs called

D

G

E

σ

– topological space and

D

G

E

μ

– topological space by induced two alternate definitions DGσ – open set and DGμ – open set respectively. Investigated some properties of the topologies determined by a digraph with respect to each of these alternated definitions.
Matroidal Structure Based On Soft-Sets
Authors: Hassan Kholod M. , Johnny Saied A. 
Published: August 2020

Abstract
A matroidal structure that generalizes the properties of independence. Relevant applications are found in graph theory and linear algebra. This paper will focus on the definitions of a matroid in terms of generalization for a crisp set called soft-set and soft-point, also we give some results related to this concept. A soft-matroid is defined and examples of soft-systems which form are given. The novel concept of independent soft-set is introduced. The notion maximal of independent soft-sets and minimal dependent soft-sets, with examples from linear algebra and soft-graph theory, are illustrated. Finally, we investigate some fundamental properties of soft-matroid.
On spectral asymptotic for the second-derivative operators
Authors: Hameed Ehsan , Saleem Yahea 
Published: August 2020

Abstract
In this work we focus on spectral asymptotic for the second derivative operators. Here we study Schrödinger operator with zero-range potentials, because this operator has great importance for understanding the solvable problems in quantum mechanics and atomic physics. It appears in different models such as the mathematical physics, applied mathematics and theoretical physics. We have two objectives in this work. We first demonstrated that this operator has a continuous spectrum contains an infinite number of bands separated by gaps. We then explained that the bands to gaps ratio tends to zero under certain conditions.
Locally Finite Associative Algebras and Their Lie Subalgebras
Authors: Shlaka Hasan M. 
Published: August 2020

Abstract
An infinite dimensional associative algebra

A

over a field

F

is called locally finite associative algebra if every finite set of elements is contained in a finite dimensional subalgebra of

A

. Given any associative algebra

A

over field

F

of any characteristic. Consider a new multiplication on

A

called the Lie multiplication which defined by [a, b] = ab − ba for all a, b ∈ A, where ab is the associative multiplication in

A

. Then L =

A

(−) together with the Lie multiplication form a Lie subalgebra of

A

. It is natural to expect that the structures of L and

A

are connected closely. In this paper, we study and discuss the structure of infinite dimensional locally finite Lie and associative algebras. The relation between them, their ideals and their inner ideals is considered. A brief discussion of the simple associative algebras and simple Lie algebras is also be provided.
The role of media coverage on the dynamical behavior of smoking model with and without spatial diffusion
Authors: Mohsen Ahmed Ali , Naji Raid Kamel 
Published: August 2020

Abstract
The spread of epidemic diseases still a major threat to the life of communities. Therefore, with the great development of the technology, the spread of diseases can be reduced by using media coverage awareness. In this paper a smoking model incorporating media coverage for warranting the population is proposed and studied. The dynamics of the model is investigated in two different cases: nonexistence and existence of diffusion. The existence, positivity and bounded-ness of solutions are investigated. The local and global stability by the help of Lyapunov function of all possible equilibrium points are investigated. Moreover, numerical simulations are carried out to validate the analytical results and specify the effect of varying the parameters.
Trigonometric Neural Networks Lp
, p<1 Approximation
Authors: Bhaya Eman Samir , Abd Al-Sadaa Zaineb Hussain 
Published: August 2020

Abstract
Many researchers studied the approximation by neural networks approximation. However only using first or second modulus, that is with low speed approaching zero. Here we define a neural network. Then we use it to approximate functions from Lp−
quasi normed spaces we prove upper and lower bounds trigonometric neural networks estimations using the modulus of smoothness of order k.
Lie group Method for Solving System of Stochastic Differential Equations
Authors: Alwan Zainab Mohammed 
Published: August 2020

Abstract
In the current work, we realize Lie group method for system of stochastic differential equations(SDE). To comprehend this method which is used the vector field in the function and solved system by associated with Fokker-Planck equations(FPE). For more accurate, we inserted some applications of system solved by this method.
On Nano soft-ℐ-semi-g-closed sets
Authors: Esmaeel R.B. , Mohammad R.J. 
Published: August 2020

Abstract
In this paper, the notions of nano soft closed sets were introduced by using nanosoft ideal and nano soft semi-open sets, which are nano soft-ℐ-semi-g-closed sets “n-sℐsgclosed” where many of the properties of these sets were clarified. Using many figures and proposition have been studied the relationships among these kinds of nano soft sets with some examples were explained.
Application of Algebraic Geometry In Three Dimensional projective space PG (3,7)
Authors: Abdulla Ali Ahmed A. , Kasm Yahya Nada Yassen 
Published: August 2020

AbstractThe main goal of this work is to construct surfaces and complete arcs in the projective 3 – space PG (3, q) over Galois fields GF (p), p=7. Which represents applications of algebraic geometry in three-dimensional projective space PG (3, P), where p=7 which is a (k, ƪ)-span. We get the following results. First, we found the points, lines and planes in PG (3,7) and we construct (k, ƪ)-span which is a set of k lines no two of which intersect. We prove that the maximum complete (k, ƪ)-span in PG (3,7) is (50, ƪ)-span, which is the equal to all the points of the space that is called a spread. Second in general we prove geometrical rule the total number of Spread in projective space PG (3, p) where p is prime,P≥ 2is p2+ l.
On Generalized (α, β) Derivation on Prime Semirings
Authors: Rasheed Maryam K. , Hameed Fatin A. , Majeed Abdulrahman. H. 
Published: August 2020

Abstract
In this paper we introduce generalized (α, β) derivation on Semirings and extend some results of Oznur Golbasi on prime Semiring. Also, we present some results of commutativity of prime Semiring with these derivation.
The M- Projective Tensor of G
1-Manifold
Authors: Mohammed Nawaf Jaber 
Published: August 2020

Abstract
This article is devoted to the study of the geometric properties of curvature tensor on certain classes of almost Hermitian manifolds. In particular, we studied the platitude property of M-projective on G

1
-manifold and found a link between G
1-manifold, ℌ-manifold and

NK

-manifold.
Focal Function in i-Topological Spaces via Proximity Spaces
Authors: Mahdi Altalkany Yiezi Kadham , Al Swidi Luay A. A. 
Published: August 2020

AbstractThrough the characteristic and properties of ideal we were able to give a new definition to neighborhood of a certain point, but these neighborhoods do not necessarily contain that point. we also introduced a new definition to the local function by using both proximity relation and the idea of the neighborhoods that were indicated, finally we presented most important results and their properties.
Improved Alternating Direction Implicit Method
Authors: Al-taai Esraa Abbas , Ali Adel Rashed A. 
Published: August 2020

Abstract
The alternating direction implicit method (ADI) is a common classical numerical method that was first introduced to solve the heat equation in two or more spatial dimensions and can also be used to solve parabolic and elliptic partial differential equations as well. In this paper, We introduce an improvement to the alternating direction implicit (ADI) method to get an equivalent scheme to Crank-Nicolson differences scheme in two dimensions with the main feature of ADI method. The new scheme can be solved by similar ADI algorithm with some modifications. A numerical example was provided to support the theoretical results in the research.
Next Generation of High-Speed Optical Communications Networks Using OFDM Technology
Authors: Jaber Atta Takhum , Ahmed Soudad S. , Kadhim Shehab Ahmed 
Published: August 2020

AbstractThe usage of data transmission through Optical Fiber is highly preferred in every area where transferring of data is needed from one end to another. Moreover, nowadays the infrastructure of telecommunications is in good shape and size to handle data transmission through its optical fibers which have low attenuation and higher bandwidth. The seeking of data rate higher than 100Gbit/second and above has been increased to build it in urban and rural areas, and for long and short hauls. Consequently, the current goal is to propel this transmission system into the next appropriated level to avoid any decline of the optical infrastructure than its current capacity. To fulfill increased demand for bandwidth in Broadband services one of the most trusted technology is the Orthogonal Frequency Division Multiplexing (OFDM). The Orthogonal Frequency Division Multiplexing has been placed on-demand in optical communication, it is used in Long haul transmission Format in Direct and Coherent detection. OFDM has many features and abilities can boost the optical fiber performance by eliminating several limits of conventional Optical Fiber communication. OFDMA has polarization mode dispersion (PMD) and chromatic dispersion (CD) which are considered a big addition to the current systems. In addition to that, the easy correlation of the coherent optical OFDM with Wavelength Division Multiplexing (WDM) systems can further advantages in the transmission system such as super bandwidth, high spectral efficiency, and extra data rates. Furthermore, the WDM systems can improve data rate and capacity by using multiple wavelengths over a single fiber. This work aims to bring implementation and to perform a deep-dive study of higher data rates using Direct and Coherent Optical OFDM for long path transmissions. This research starts with a unique user and then extends to the add the OFDM - WDM system to get a data rate of 100 Gbps. Regarding the software portion, the Optisystem simulation tool was used for the design and implementation of the system. Moreover, the modulation type used is QAM for the OFDM signal, and I/Q modulation is deployed, while Coherent and Direct detection is used at the receiving portion. Q Factor, the bit error rate and eye diagram were discussed to study the System’s Performance and Quality. This work found CD-OOFDM is the best system for next generation of optical. The work compared WDM CD-OOFDM with SMF-DCF to DD and CD-OOFDM. In addition to that, it compared WDM CD-OOFDM with SMF-DCF to CD-OODFM with SMF. Therefore, the results showed that WDM CD-OOFDM with SMF-DCF achieved 25 Gbps for four channels of the WDM system at 120km channel, where the carrier frequencies were from 193.05THz to 193.2THz.
intuitionistic fuzzy pseudo ideals in Q-algebra
Authors: Abdullah Habeeb Kareem , Shadhan Mortda Taeh 
Published: August 2020

Abstract
Present several types in this paper of intuitionistic fuzzy ideal in Q-algebra, called (intuitionistic fuzzy pseudo ideal, intuitionistic fuzzy k-pseudo ideal, intuitionistic fuzzy c-psudo ideal, intuitionistic fuzzy complete- k-pseudo ideal). We have introduced and illustrated several ideas that evaluate their relationship in a Q-algebra.
Independent (Non-Adjacent Vertices) Topological Spaces Associated with Undirected Graphs, With Some Applications in Biomathematices
Authors: Hassan Asmhan Flieh , Abed Zainab Irhayyim 
Published: August 2020

Abstract
In this work, we associate a new topology to undirected graph G = (V, E) which may contain one isolated vertex or more and we named it Independent (non-adjacent vertices) Topology. A new sub-basis family to generate the Independent Topology is introduced on the set of n vertices V and for every vertex v of V the number of adjacent vertices is not greater than n − 2 (In simple graph we can say : for every vertex v of V, Δ(G) = n − 2, where Δ(G) is the maximum degree of vertices in a graph G). Then we give a fundamental step toward investigation of some properties of undirected graphs by their corresponding Independent Topology which we introduce in this work. Furthermore, an application to our new model (Independent Topology) are presented, that to carry out a framework in practical life like biomathematics (applied examples in biomathematics).
Computations in the Pre-Bloch group
Authors: Al Baydli D. , Rahm A. 
Published: August 2020

Abstract
For compute the five term relations in the pre-Bloch group for specify an infinite-order- element in

K

3

(
ℚ

(

−
m

)

)

, m ∈ ℕ square- free. For the quadratic imaginary number fields 𝔽 of discriminant (−1,−2,−3,−7,−17,−19). We use the GAP Programming software to implement our method.
Truncated Rayleigh Pareto Distribution
Authors: Khalaf Reyah Zeadan , Al-Kadim Kareema Abad 
Published: August 2020

Abstract
In this paper, we introduced a new distribution which is the truncated Rayleigh Pareto distribution of a variable, and some useful functions, and some mathematical and statistical properties such as density function, the cumulative distribution function, limit function, reliability function, hazard function, stress - strength reliability, engineering arithmetic mean, mode and median, harmonic arithmetic mean, the rth moment about the mean and the origin, coefficients of variation, of kurtosis and Skewedness, order statistic, and some estimation methods.
Quantifying lifestyle based social equity implications for national sustainable development policy
Authors: Shigetomi Yosuke , Chapman Andrew , Nansai Keisuke , Matsumoto Ken’ichi , Tohno Susumu 
Published: August 2020

Abstract
The aim of this research is to address the challenge of achieving more equitable social outcomes through a reduction and fairer allocation of environmental burdens, and in doing so, contributing to national sustainable development policy. This novel study demonstrates the nature of societal outcomes through the lens of inequity with respect to lifestyle related environmental footprints and stakeholder preferences. Footprints are derived using input-output analysis, while environmental issue preferences and potential remedial actions are identified using a national survey. To highlight the value of the broadly applicable framework, here we demonstrate a case study of Japan, which is interesting due to shifting demographics engendering an aging, shrinking population. Key findings include that the mitigation of environmental footprints in line with household preferences can positively influence both societal equity outcomes and contribute to closing the gap between rich and poor. Importantly, broad participation, i.e. participation irrespective of income level, is shown to be more effective than participation from a single sector. These findings can assist policymakers to develop policies which are responsive to societal preferences and demographic trends while also furthering the debate toward clarifying norms for acceptable levels of social equity.
Angiogenic factors secreted from human ASC spheroids entrapped in an alginate-based hierarchical structure via combined 3D printing/electrospinning system
Authors: Lee Ji-Seon , Chae SooJung , Yoon Dajeong , Yoon Dogeon , Chun Wook , Kim Geun Hyung 
Published: August 2020

Abstract
Human adipose-derived stem cell spheroids have been widely used in the treatment or regeneration of damaged skin tissues, and their success is believed to be due in part to angiogenic factors released from the spheroids. To achieve the sustained release of bioactive components from implanted spheroids within a defective area, the use of a biocompatible scaffolding biomaterial is required. In this study, we developed an alginate-based scaffolding structure, which was processed using three-dimensional printing and electrospinning for use as a spheroid-entrapping structure. A micro-sized alginate strut and electrospun alginate nanofibers functioned not only to firmly entrap the spheroids, but also to enable the stable release of various angiogenic and wound healing-related factors. We also demonstrated the function of these factors using a tube-forming assay and found that conditioned media from the spheroid-scaffold group improved capillary-like structure formation in human umbilical vein endothelial cells compared to the single cell-scaffold group. Our results suggest that this spheroid-entrapping alginate hybrid structure could represent a new platform for stem cell therapy using spheroid transplantation.
Influence of particles size and concentration of carbonyl iron powder on magnetorheological properties of silicone rubber-based magnetorheological elastomer
Authors: Wu Cong , Cheng Cheng , El-Aty Ali Abd , Li Tao , Qin Yao , Yang Qiucheng , Hu Shenghan , Xu Yong , Guo Xunzhong 
Published: August 2020

Abstract
In this study, the anisotropic magnetorheological elastomer(MRE) was prepared by mixing two-component room temperature vulcanized(RTV) silicone rubber, carbonyl iron powder particles and dimethyl silicone oil uniformly, then heated and solidified under 500 mT magnetic field intensity. Five types of magnetic particles with different concentrations of 20%, 30%, 40%, 50%, 60% and five different sizes of 1.7, 2.8, 3.9, 4.6, 7.2 μm, were used to investigate the effects of the concentrations and sizes of the magnetic particles on the microstructure, mechanical properties and the magnetorheological effect (MR-effect) of anisotropic MREs. The results obtained from this study showed that the MR-effect has a significant dependence on the concentrations and particle sizes of the magnetic particles. It increased with the increase of the particle concentrations, and the high particle concentration makes the MRE have a high magnetostrictive modulus and MR-effect. Nevertheless, with the increase of the particle sizes, the MR-effect showed a trend of strengthening firstly and then weakening, there is an optimal particle size of 4.6 μm, at this size, the MR-effect is the most significant.
Photothermal catalysis for CO2 convert into C1–C3 hydrocarbons by proton conductor BZCY532
Authors: Tian Jindan , Ren Yanan , Liu Lulu , Guo Qiangsheng , Sha Na , Zhao Zhe 
Published: August 2020

Abstract
Conversion of CO2 into long-chain hydrocarbons is a potential applications in clean energy research. Here, we exhibit an efficient, stable and readily synthesized photocatalyst for the photocatalytic reduction of CO2. This is the first time that the proton conductor BZCY 532 as photocatalysts can harvest UV light for multielectron, multiproton reduction of CO2 to C1 (methane) , C2 (ethane), and C3 (propane) hydrocarbons. Under the photothermal coupling (350 °C + UV) condition, the total yield of CH4, C2H6 and C3H8 were 39.13 umol g−1, 8.64 umol g−1 and 3.22 umol g−1 over the course of more than 5 h runs, respectively . The light and temperature attribute influence the selectivity of C1 and C2, C3. In this approach, Ni, Co-doped BZCY532 were also studied and the results show that Ni, Co-doped BZCY532 have higher activity. Ni 0.05 and Co 0.05 obtained the yield of total CH4, C2H6, C3H8, which show about 5.6, 9.6, 3.9 and 6.8, 14.2, 6.7 times than BZCY532, respectively. The results proved that doping play a crucial role in improving photocatalytic activity of BZCY532. The formation of multi-carbon compounds maybe the faster proton transfer, which can harvest more electrons from the proton conductor catalysts and promote C–C coupling to form C2 and C3. These findings elucidate BZCY-based proton conductor catalyst can be good candidate for the nature of photocatalysis, which involves the stage for the chemical bond formation by light excitation.