bluuebunny/crossref_metadata_2025_split huggingface dataset:
STRATEGI PENGEMBANGAN BAWANG MERAH DI KABUPATEN BIMA, NUSA TENGGARA BARAT
Authors: Setiani Rima _ 
Published: October 2019

Nusa Tenggara Barat (NTB) merupakan penghasil bawang merah terbesar nomor empat di Indonesia, setelah Jawa Tengah, Jawa Timur dan Jawa Barat dengan produksi rata-rata bawang merah adalah 10.22 ton/ha. Salah satu daerah potensial penghasil bawang merah di NTB adalah Kabupaten Bima, dengan potensi lahan pengembangan bawang merah seluas 18.075 Ha, namun baru termanfaatkan sekitar 50%. Tujuan penelitian ialah untuk mengetahui faktor-faktor apa saja yang mempengaruhi pengembangan bawang merah di Kabupaten Bima dan strategi pengembangan bawang merah yang tepat untuk dilaksanakan di Kabupaten Bima. Penelitian dilakukan di Kabupaten Bima, pada bulan Januari-Desember 2016. Pemilihan lokasi dan responden dilakukan secara purposive sebanyak 34 orang. Metode analisis secara deskriptif dan menggunakan metode SWOT. Hasil penelitian menjelaskan bahwa pengembangan bawang merah di Kabupaten Bima berada pada kuadran II, dimana terdapat potensi mendukung pengembangan bawang merah di Kabupaten Bima namun ancamannya juga tinggi, sehingga diperlukan strategi untuk merubah ancaman menjadi kekuatan. Strategi tersebut ialah mengatur pola tanam dengan menggunakan varietas lokal, meningkatkan peran kelembagaan pemasaran serta keterlibatan pemerintah dalam menyerap produksi
Proposta De Modelo De Gestão Financeira Aplicada A Uma Empresa De Pequeno Porte No Segmento De Fertilizantes
Authors: Moura André Leme de , Santos David Ferreira Lopes , Conceição Elimar Veloso 
Published: October 2019

Objetivo: Trata-se de uma pesquisa aplicada com vistas a propor um modelo de gestão financeira aplicada a uma empresa do segmento de fertilizantes agrícolas, capaz de estruturar todas as informações financeiras da empresa com o objetivo de subsidiar o processo de gestão e a tomada de decisão.Método: Realizou-se uma pesquisa quanti-qualitativa baseada em técnicas de observação participante e pesquisa-ação em uma empresa específica do setor de fertilizantes agrícolas. Os materiais foram coletados junto a fontes primárias (observação e entrevistas) da empresa e secundárias (documentos da empresa e informações financeiras do setor).Originalidade/Relevância: O contexto apresentado expõe uma lacuna teórico-aplicada de instrumentos que auxiliam em “como” construir e estruturar as informações financeiras para as PMEs de forma exequível ao empresário ou gestor que não possui uma formação educacional nessa área.Resultados: Os resultados deste estudo viabilizam a criação de um modelo empírico de gestão financeira que: i) demonstra desde a estrutura organizacional necessária; ii) os processos operacionais inerentes à atividade; e iii) os indicadores que devem ser utilizados para a análise da situação financeira e a tomada de decisão.Contribuições teóricas/metodológicas: Essas evidências podem servir como parâmetro ou insights para outras empresas do segmento de fertilizantes e demais empresas de pequeno porte, além de pesquisadores no âmbito organizacional.
Positive solutions for diffusive Logistic equation with refuge
Authors: Sun Jian-Wen 
Published: October 2019

AbstractIn this paper, we study the stationary solutions of the Logistic equation$$\begin{array}{} \displaystyle u_t=\mathcal {D}[u]+\lambda u-[b(x)+\varepsilon]u^p \text{ in }{\it\Omega} \end{array}$$with Dirichlet boundary condition, here 𝓓 is a diffusion operator andε> 0,p> 1. The weight functionb(x) is nonnegative and vanishes in a smooth subdomainΩ0ofΩ. We investigate the asymptotic profiles of positive stationary solutions with the critical valueλwhenεis sufficiently small. We find that the profiles are different between nonlocal and classical diffusion equations.
A systematic review of 3D printing in chemistry education – analysis of earlier research and educational use through technological pedagogical content knowledge framework
Authors: Pernaa Johannes , Wiedmer Susanne 
Published: October 2019

Abstract
The focus of this systematic literature analysis is to provide a comprehensive review of earlier research on the utilisation of 3D printers in chemistry education. The objective is to offer research-based knowledge for developing chemistry education through following research questions: what kind of work has been done in the field of 3D printing in chemistry education; what kind of design strategies have been implemented; how 3D printing has been used in chemistry education research. The data consists of 47 peer-reviewed articles which were analysed via qualitative content analysis using a technological pedagogical content knowledge framework. Theoretical framework was selected because integrating 3D printing in chemistry education requires knowledge of chemistry, technology, and most importantly, pedagogy. Our research indicates that integrating 3D printing begins by analysing current challenges which are reasoned via pedagogical or technological content knowledge-based arguments. 3D printing was used for producing solutions (e.g. physical models) that support working with found challenges. In chemistry education research, 3D printing has mainly been used for printing research instruments; few studies have investigated its effect on learning or students’ perceptions towards it. There is a great need for comprehensive student-centred pedagogical models for the use of 3D printing in chemistry education.
Sphere and projective space of a C
*-algebra with a faithful state
Authors: Antunez Andrea C. 
Published: October 2019

Abstract
Let 𝒜 be a unital C
*-algebra with a faithful state ϕ. We study the geometry of the unit sphere 𝕊
ϕ
= {x ∈ 𝒜 : ϕ(x
*
x) = 1} and the projective space ℙ
ϕ
= 𝕊
ϕ
/𝕋. These spaces are shown to be smooth manifolds and homogeneous spaces of the group 𝒰
ϕ
(𝒜) of isomorphisms acting in 𝒜 which preserve the inner product induced by
ϕ
, which is a smooth Banach-Lie group. An important role is played by the theory of operators in Banach spaces with two norms, as developed by M.G. Krein and P. Lax. We define a metric in ℙ
ϕ
, and prove the existence of minimal geodesics, both with given initial data, and given endpoints.
A New Investigation on Fractional-Ordered Neutral Differential Systems with State-Dependent Delay
Authors: Valliammal N. , Ravichandran C. , Hammouch Zakia , Mehmet Baskonus Haci 
Published: October 2019

AbstractFractional differential equations with delay behaviors occur in fields like physical and biological ones with state-dependent delay or nonconstant delay and has drawn the attention of researchers. The main goal of the present work is to study the existence of mild solutions of neutral differential system along state-dependent delay in Banach space. By employing the fractional theory, noncompact measure and Mönch’s theorem, we investigate the existence results for neutral differential equations of fractional order with state-dependent delay. An illustration of derived results is offered.
Natural extension of EF-spaces and EZ-spaces to the pointfree context
Authors: Nsayi Jissy Nsonde 
Published: October 2019

Abstract
Two problems concerning EF-frames and EZ-frames are investigated. In [Some new classes of topological spaces and annihilator ideals, Topology Appl. 165 (2014), 84–97], Tahirefar defines a Tychonoff space X to be an EF (resp., EZ)-space if disjoint unions of clopen sets are completely separated (resp., every regular closed subset is the closure of a union of clopen subsets). By extending these notions to locales, we give several characterizations of EF and EZ-frames, mostly in terms of certain ring-theoretic properties of 𝓡 L, the ring of real-valued continuous functions on L. We end by defining a qsz-frame which is a pointfree context of qsz-space and, give a characterization of these frames in terms of rings of real-valued continuous functions on L.
On weak isometries in directed groups
Authors: Jasem Milan 
Published: October 2019

AbstractIn the paper weak isometries in directed groups are investigated. It is proved that for every weak isometryfin a directed groupGthe relationf(UL(x,y) ∩LU(x,y)) =UL(f(x),f(y)) ∩LU(f(x),f(y)) is valid for eachx,y∈G. The notions of an orthogonality of two elements and of a subgroup symmetry in directed groups are introduced and it is shown that each weak isometry in a 2-isolated directed group or in an abelian directed group is a composition of a subgroup symmetry and a right translation. It is also proved that stable weak isometries in a 2-isolated abelian directed groupGare directly related to subdirect decompositions of the subgroupG2= {2x;x∈G} ofG.
On self-injectivity of the f-ring Frm(𝓟(ℝ), L)
Authors: Estaji Ali Akbar , Abedi Mostafa , Darghadam Ahmad Mahmoudi 
Published: October 2019

Abstract
Let 𝓕𝓟L := Frm(𝓟(ℝ), L). We show that if L is a P-frame then 𝓕𝓟L is an ℵ0-self-injective ring. We prove that a zero-dimensional frame L is extremally disconnected if and only if 𝓕𝓟L is a self-injective ring. Finally, it is shown that 𝓕𝓟L is a Baer ring if and only if 𝓕𝓟L is a continuous ring if and only if 𝓕𝓟L is a complete ring if and only if 𝓕𝓟L is a CS-ring.
On the extensions of discrete valuations in number fields
Authors: Deajim Abdulaziz , Fadil Lhoussain El 
Published: October 2019

Abstract
Let K be a number field defined by a monic irreducible polynomial F(X) ∈ ℤ [X], p a fixed rational prime, and νp the discrete valuation associated to p. Assume that F(X) factors modulo p into the product of powers of r distinct monic irreducible polynomials. We present in this paper a condition, weaker than the known ones, which guarantees the existence of exactly r valuations of K extending νp. We further specify the ramification indices and residue degrees of these extended valuations in such a way that generalizes the known estimates. Some useful remarks and computational examples are also given to highlight some improvements due to our result.
On certain classes of generalized derivations
Authors: Zemzami Omar Ait , Oukhtite Lahcen , Ali Shakir , Muthana Najat 
Published: October 2019

AbstractOur purpose in this paper is to investigate some particular classes of generalized derivations and their relationship with commutativity of prime rings with involution. Some well-known results characterizing commutativity of prime rings have been generalized. Furthermore, we provide examples to show that the assumed restrictions cannot be relaxed.
Sufficient conditions for Carathéodory functions and applications to univalent functions
Authors: Kwon Oh Sang , Sim Young Jae 
Published: October 2019

AbstractIn this paper, the authors derive several sufficient conditions for a function to be the Carathéodory function in the unit disk 𝔻: = {z∈ ℂ: |z| < 1}. More precisely, for givenβ∈ (–π/2,π/2),γ∈ [0, cosβ) andδ∈ (0,π/2], we find some sufficient conditions for an analytic functionpsuch thatp(0) = 1 to satisfy Re{e−iβp(z)} >γor | arg {p(z)–γ} | <δfor allz∈ 𝔻 by using the first-order differential subordination. We then apply the results obtained here in order to find some conditions for univalent functions with geometric properties such as spirallikeness and strongly starlikeness.
Blending type approximation by complex Szász-Durrmeyer-Chlodowsky operators in compact disks
Authors: Goyal Meenu , Agrawal P. N. 
Published: October 2019

AbstractIn the present article, we deal with the overconvergence of the Szász-Durrmeyer-Chlodowsky operators. Here we study the approximation properties e.g. upper estimates, Voronovskaja type result for these operators attached to analytic functions in compact disks. Also, we discuss the exact order in simultaneous approximation by these operators and its derivatives and the asymptotic result with quantitative upper estimate. In such a way, we put in evidence the overconvergence phenomenon for the Szász-Durrmeyer-Chlodowsky operators, namely the extensions of approximation properties with exact quantitative estimates and orders of these convergencies to sets in the complex plane that contain the interval [0, ∞).
Linear directional differential equations in the unit ball: solutions of bounded L-index
Authors: Bandura Andriy , Skaskiv Oleh 
Published: October 2019

AbstractWe study sufficient conditions of boundedness ofL-index in a directionb∈ ℂn∖ {0} for analytic solutions in the unit ball of a linear higher order non-homogeneous differential equation with directional derivatives. These conditions are restrictions by the analytic coefficients in the unit ball of the equation. Also we investigate asymptotic behavior of analytic functions of boundedL-index in the direction and estimate its growth. The results are generalizations of known propositions for entire functions of several variables.
On oscilatory fourth order nonlinear neutral differential equations – IV
Authors: Tripathy Arun Kumar , Mohanta Rashmi Rekha 
Published: October 2019

AbstractIn this paper, oscillation of all solutions of fourth order functional differential equations of neutral type of the form$$\begin{array}{} \displaystyle (r(t)(y(t)+p(t)y(t-\tau))'')''+q(t)G(y(t-\sigma))=0 \end{array}$$are studied under the assumption$$\begin{array}{} \displaystyle \int\limits^{\infty}_{0}\frac{t}{r(t)}\text{d}t \lt \infty \end{array}$$for various ranges ofp(t)
Oscillation criteria for second-order half-linear delay differential equations with mixed neutral terms
Authors: Grace Said R. , Graef John R. , Jadlovská Irena 
Published: October 2019

AbstractThis article concerns the oscillatory behavior of solutions to second-order half-linear delay differential equations with mixed neutral terms. The authors present new oscillation criteria that improve, extend, and simplify existing ones in the literature. The results are illustrated with examples.
Lerch’s theorem on nabla time scales
Authors: Dolník Matej , Kisela Tomáš 
Published: October 2019

Abstract
The paper discusses uniqueness of Laplace transform considered on nabla time scales. As the main result, a nabla time scales analogue of Lerch’s theorem ensuring uniqueness of Laplace image is proved for so-called simply periodic time scales. Moreover, several presented counterexamples demonstrate that the uniqueness of Laplace image does not occur on general time scales when the nabla approach is employed. Other special properties of Laplace transform on nabla time scales, such as potential disconnectedness of domain of convergence, are addressed as well.
IK ${\mathcal I}^{\mathcal K}$-convergence of sequences of functions
Authors: Das Pratulananda , Sengupta Sayan , Šupina Jaroslav 
Published: October 2019

Abstract
We continue to investigate the notion of
${\mathcal I}^{\mathcal K}$-convergence (which concerns with the convergence with respect to one ideal along a set which is “big” with respect to another ideal) introduced by M. Mačaj and M. Sleziak [10] with primary focus on sequences of real functions. Our investigation is based on results by R. Filipów and M. Staniszewski [5, 6] or M. Staniszewski [11].
Convolution theorems related with the solvability of Wiener-Hopf plus Hankel integral equations and Shannon’s sampling formula
Authors: Castro Luís Pinheiro , Guerra Rita Correia , Tuan Nguyen Minh 
Published: October 2019

Abstract
This paper considers two finite integral transforms of Fourier-type, in view to propose a set of eight new convolutions, and to analyze the solvability of a class of the integral equations of Wiener-Hopf plus Hankel type, defined on finite intervals, which is involved in engineering problems. The solvability and solution of the considered equations are investigated by means of Fourier-type series, and a Shannon-type sampling formula is obtained. Some concluding remarks with respect to theoretical issues and engineering applications are emphasized in the last section, along with the analysis of some illustrative cases, which exemplify that the present method solves cases which are not under the conditions of previously known techniques.
Stabilization of third order differential equation by delay distributed feedback control with unbounded memory
Authors: Domoshnitsky Alexander , Volinsky Irina , Polonsky Anatoly 
Published: October 2019

Abstract
There are almost no results on the exponential stability of differential equations with unbounded memory in mathematical literature. This article aimes to partially fill this gap. We propose a new approach to the study of stability of integro-differential equations with unbounded memory of the following forms

$$\begin{array}{}
\begin{split}
\displaystyle
x'''(t)+\sum_{i=1}^{m}\int\limits_{t-\tau_{i}(t)}^{t}b_{i}(t)\text{e}^{-\alpha _{i}(t-s) }x(s)\text{d} s &=0,
\\
x'''(t)+\sum_{i=1}^{m}\int\limits_{0}^{t-\tau _{i}(t)}b_{i}(t)\text{e}^{-\alpha _{i}(t-s) }x(s)\text{d} s &= 0,
\end{split}
\end{array}$$
with measurable essentially bounded bi(t) and τi(t), i = 1, …, m.
We demonstrate that, under certain conditions on the coefficients, integro-differential equations of these forms are exponentially stable if the delays τi(t), i = 1, …, m, are small enough. This opens new possibilities for stabilization by distributed input control. According to common belief this sort of stabilization requires first and second derivatives of x. Results obtained in this paper prove that this is not the case.
On the amenability of a class of Banach algebras with application to measure algebra
Authors: Ghanei Mohammad Reza , Nemati Mehdi 
Published: October 2019

Abstract
Let 𝓛 be a Lau algebra and X be a topologically invariant subspace of 𝓛* containing UC(𝓛). We prove that if 𝓛 has a bounded approximate identity, then strict inner amenability of 𝓛 is equivalent to the existence of a strictly inner invariant mean on X. We also show that when 𝓛 is inner amenable the cardinality of the set of topologically left invariant means on 𝓛* is equal to the cardinality of the set of topologically left invariant means on RUC(𝓛). Applying this result, we prove that if 𝓛 is inner amenable and 〈𝓛2〉 = 𝓛, then the essential left amenability of 𝓛 is equivalent to the left amenability of 𝓛. Finally, for a locally compact group G, we consider the measure algebra M(G) to study strict inner amenability of M(G) and its relation with inner amenability of G.
A bivariate Kumaraswamy-exponential distribution with application
Authors: Bakouch Hassan S. , Moala Fernando A. , Saboor Abdus , Samad Haniya 
Published: October 2019

AbstractIn this paper, we introduce a new bivariate Kumaraswamy exponential distribution, whose marginals are univariate Kumaraswamy exponential. Some probabilistic properties of this bivariate distribution are derived, such as joint density function, marginal density functions, conditional density functions, moments and stress-strength reliability. Also, we provide the expected information matrix with its elements in a closed form. Estimation of the parameters is investigated by the maximum likelihood, Bayesian and least squares estimation methods. A simulation study is carried out to compare the performance of the estimators by estimation methods. Further, one data set have been analyzed to show how the proposed distribution works in practice.
Body Size and Tissue-Scaling Is Regulated by Motoneuron-Derived Activinß in Drosophila melanogaster
Authors: Moss-Taylor Lindsay , Upadhyay Ambuj , Pan Xueyang , Kim Myung-Jun , O’Connor Michael B 
Published: October 2019

Abstract
Correct scaling of body and organ size is crucial for proper development, and the survival of all organisms. Perturbations in circulating hormones, including insulins and steroids, are largely responsible for changing body size in response to both genetic and environmental factors. Such perturbations typically produce adults whose organs and appendages scale proportionately with final size. The identity of additional factors that might contribute to scaling of organs and appendages with body size is unknown. Here, we report that loss-of-function mutations in Drosophila Activinβ (Actβ), a member of the TGF-β superfamily, lead to the production of small larvae/pupae and undersized rare adult escapers. Morphometric measurements of escaper adult appendage size (wings and legs), as well as heads, thoraxes, and abdomens, reveal a disproportional reduction in abdominal size compared to other tissues. Similar size measurements of selected Actβ mutant larval tissues demonstrate that somatic muscle size is disproportionately smaller when compared to the fat body, salivary glands, prothoracic glands, imaginal discs, and brain. We also show that Actβ control of body size is dependent on canonical signaling through the transcription-factor dSmad2 and that it modulates the growth rate, but not feeding behavior, during the third-instar period. Tissue- and cell-specific knockdown, and overexpression studies, reveal that motoneuron-derived Actβ is essential for regulating proper body size and tissue scaling. These studies suggest that, unlike in vertebrates, where Myostatin and certain other Activin-like factors act as systemic negative regulators of muscle mass, in Drosophila, Actβ is a positive regulator of muscle mass that is directly delivered to muscles by motoneurons. We discuss the importance of these findings in coordinating proportional scaling of insect muscle mass to appendage size.
Nanoluciferase-Based Method for Detecting Gene Expression in Caenorhabditis elegans
Authors: Sfarcic Ivana , Bui Theresa , Daniels Erin C , Troemel Emily R 
Published: October 2019

Abstract
Genetic reporters such as the green fluorescent protein (GFP) can facilitate measurement of promoter activity and gene expression. However, animal autofluorescence limits the sensitivity of GFP and other fluorescent reporters in whole-animal settings like in the nematode Caenorhabditis elegans. Here, we present a highly sensitive Nanoluciferase (NanoLuc)-based method in a multiwell format to detect constitutive and inducible gene expression in C. elegans. We optimize detection of bioluminescent signals from NanoLuc in C. elegans and show that it can be detected at 400,000-fold over background in a population of 100 animals expressing intestinal NanoLuc driven by the vha-6 promoter. We can reliably detect signal in single vha-6p::Nanoluc-expressing worms from all developmental stages. Furthermore, we can detect signal from a 1/100 dilution of lysate from a single vha-6p::Nanoluc-expressing adult and from a single vha-6p::Nanoluc-expressing adult “hidden” in a pool of 5000 N2 wild-type animals. We also optimize various steps of this protocol, which involves a lysis step that can be performed in minutes. As a proof-of-concept, we used NanoLuc to monitor the promoter activity of the pals-5 stress/immune reporter and were able to measure 300- and 50-fold increased NanoLuc activity after proteasome blockade and infection with microsporidia, respectively. Altogether, these results indicate that NanoLuc provides a highly sensitive genetic reporter for rapidly monitoring whole-animal gene expression in C. elegans.