bluuebunny/crossref_metadata_2025 huggingface dataset:
OPTIMISASI PENJADWALAN EKONOMIS PADA UNIT PEMBANGKIT PLTG DI PLTGU PT INDONESIA POWER TAMBAK LOROK MENGGUNAKAN METODE DIFFERENTIAL EVOLUTION ALGORITHM
Authors: Tamin Achmad Faizal , Karnoto Karnoto , Facta Mochammad
Published: June 2019

Biaya pembangkitan merupakan biaya penyediaan energi listrik terbesar terutama pada biaya bahan bakar. Setiap unit generator memiliki karakteristik biaya pembangkitan tersendiri. Untuk mendapatkan pengoperasian pembangkit yang optimal maka diperlukan adanya penjadwalan operasi pembangkit. Differential Evolution Algorithm (DEA) diusulkan sebagai metode penjadwalan ekonomis pada PLTG di PLTGU Tambak Lorok. Metode DEA merupakan metode pencarian yang terinsiparasi oleh fenomena evolusi di alam dengan dasar argumen geometri. Untuk melihat perfoma dari simulasi metode DEA maka metode ini dibandingkan dengan metode Lagrange Mulptiplier sebagai validasi. Hasil simulasi optimisasi dengan metode DEA menunjukkan performa yang baik. Hasil simulasi identik dengan metode Lagrange Mulptiplier, sedangkan dalam keadaan operasi sistem dan keadaan diskret tidak memiliki perbedaan yang signifikan. Berdasarkan simulasi dengan dua kondisi operasi yang berbeda menggunakan metode DEA, didapatkan bahwa pada operasi diskret didapat rata-rata penghematan sebesar 1916,260 $/jam. Pada operasi sistem didapat rata-rata penghematan sebesar 1914,408 $/jam.
SIMULASI PENGENDALIAN SHELL HEAVY OIL FRACTIONATOR (SHOF) MENGGUNAKAN METODE KONTROL ADAPTIF
Authors: Martasia Sela , Setiyono Budi , Wahyudi Wahyudi
Published: June 2019

Shell Heavy Oil Fractionator (SHOF) adalah suatu kolom distilasi atau yang disebut juga fraksinator yang digunakan untuk memisahkan heavy oil mentah menjadi produk-produk yang diinginkan berdasarkan perbedaan titik didih dari masing-masing produk tersebut. Perancangan kendali pada SHOF memiliki beberapa kendala yang disebabkan oleh non-linearitas pada proses, interaksi multivariabel, waktu tunda (dead time) yang panjang, dan gangguan. Berdasarkan hal tersebut, dibutuhkan suatu metode kontrol yang mampu mengendalikan respon sistem untuk pengoptimalan sistem SHOF sehingga keluaran komposisi produk sesuai dengan yang diharapkan. Kontroler tersebut digunakan untuk mengendalikan valve pada kolom fraksinator SHOF dengan tiga masukan dan tiga keluaran yang telah didekopling. Metode kontrol adaptif autotuning umpan balik relay dan algoritma Dahlin merupakan beberapa  jenis  metode  kontrol yang mampu mengendalikan plant multivariabel dengan fungsi alih FOPDT. Berdasarkan pengujian yang telah dilakukan, rata-rata IAE terkecil yang diperoleh pada top end point composition (Y1) tanpa dan dengan gangguan sebesar 21,46 dan 101,78 dengan kontroler autotuning umpan balik relay sedangkan pada side end point composition (Y2) diperoleh rata-rata IAE terkecil tanpa dan dengan gangguan sebesar 9,19 dan 37,66 dengan kontroler autotuning umpan balik relay.
Nef vector bundles on a quadric surface with the first Chern class (2, 1)
Authors: Ohno Masahiro
Published: June 2019

We classify nef vector bundles on a smooth quadric surface with the first Chern class (2, 1) over an algebraically closed field of characteristic zero; we see in particular that such nef bundles are globally generated.
Affine-compact functors
Authors: Gubeladze Joseph
Published: June 2019

Several well known polytopal constructions are examined from the functorial point of view. A naive analogy between the Billera–Sturmfels fiber polytope and the abelian kernel is disproved by an infinite explicit series of polytopes. A correct functorial formula is provided in terms of an affine-compact substitute of the abelian kernel. The dual cokernel object is almost always the natural affine projection. The Mond–Smith–van Straten space of sandwiched simplices, useful in stochastic factorizations, leads to a different kind of affine-compact functors and new challenges in polytope theory.
On plane curves given by separated polynomials and their automorphisms
Authors: Bonini Matteo , Montanucci Maria , Zini Giovanni
Published: June 2019

Let 𝓒 be a plane curve defined over the algebraic closureKof a finite prime field 𝔽pby a separated polynomial, that is 𝓒 :A(Y) =B(X), whereA(Y) is an additive polynomial of degreepnand the degreemofB(X) is coprime withp. Plane curves given by separated polynomials are widely studied; however, their automorphism groups are not completely determined. In this paper we compute the full automorphism group of 𝓒 whenm≢ 1 modpnandB(X) =Xm. Moreover, some sufficient conditions for the automorphism group of 𝓒 to imply thatB(X) =Xmare provided. Also, the full automorphism group of the norm-trace curve 𝓒 :X(qr– 1)/(q–1)=Yqr–1+Yqr–2+ … +Yis computed. Finally, these results are used to show that certain one-point AG codes have many automorphisms.
Constitutionalism and Development: A Mismatch or a Dream-Team?
Authors: Harding Andrew
Published: June 2019

This article examines the conceptual and historical relationship between constitutionalism and development. It argues that the communities that represent these two ideas have had little engagement, and yet there is a good deal of overlap between their areas of concern. Given that the Sustainable Development Goals 2015 have strongly embraced good governance, accountability and the rule of law, and we have become adept at defining and articulating the rule of law, the time seems ripe for development to engage with constitutionalism, and for constitutionalism to use “developmental operativity”, as I call it, to advance its objectives in practice.
[In]stability in the use of a stable variable
Authors: Mechler Johanna , Buchstaller Isabelle
Published: June 2019

The relationship between community-wide change and patterns of variation and change within the individual is one of the cornerstones of variationist theorising. But while sociolinguistic theory makes clear and testable predictions regarding the use of stable vernacular features across the life-span of the individual, we lack real-time evidence on the age-graded nature of stable variability. Indeed, whereas apparent time research highlights the diachronic stability of (ing), only two research projects have explored its use within the individual speaker. Both report on pre-adult speakers. Our research expands the window of analysis by adding a later age-bracket to the investigation of age-graded variability. We consider the variable realisation of (ing) in a group of individuals between early adulthood and retirement.
Perplexity – a new predictor of cognitive changes in spoken language? – results of the Interdisciplinary Longitudinal Study on Adult Development and Aging (ILSE)
Authors: Frankenberg Claudia , Weiner Jochen , Schultz Tanja , Knebel Maren , Degen Christina , Wahl Hans-W. , Schroeder Johannes
Published: June 2019

In addition to memory loss, progressive deterioration of speech and language skills is among the main symptoms at the onset of Alzheimer’s disease (AD) as well as in mild cognitive impairment (MCI). Detailed interview analyses demonstrated early symptoms years before the onset of AD/MCI. Automatic speech processing could be a promising approach to identifying underlying mechanisms in larger studies or even support diagnostics. Perplexity as a measure of predictability of text could be a sensitive indicator of cognitive deterioration. Therefore, voice recordings from the Interdisciplinary Longitudinal Study on Adult Development and Aging were analyzed with regard to neuropsychological parameters in participants that develop MCI/AD or remain cognitively healthy. Preliminary results indicate that perplexity predicts severity of cognitive deficits and information processing speed obtained 10–12 years later in participants who developed MCI/AD in contrast to those who stayed healthy. Findings support the heuristic value of research on the diagnostic potential of automatic speech processing.
Ageism and interactional (mis)alignment: Using micro-discourse analysis in the interpretation of everyday talk in a hair-salon
Authors: Heinrichsmeier Rachel
Published: June 2019

In the fifty years since Robert Butler coined the term, ageism remains one of the most widely-experienced forms of discrimination in Europe. Some forms of ageism seem overt and easy-to-identify; in many cases, though, it is invisible and deeply rooted in everyday life. This applies, too, to ageism-in-interaction, which, as I argue in this paper, can be very subtle, deeply embedded in a web of routines and expectations generated over a longer interactional history.

I illustrate this embeddedness of ageism-in-interaction by focussing, as a case-study, on an encounter in a hair-salon between an 83-year-old woman and her stylist, aspects of which we might initially be tempted to attribute to the stylist’s orientations to the client’s (older) age. However, as I show, closer scrutiny of the emergent interaction, combined with progressive widening of the analysis to encompass data outside this focal exchange, suggests more nuanced understandings of what is going on. As I also aim to show, the nose-to-data attention to the emergent interactions in this case-study, informed by conversation analysis and combined with wider ethnographic knowledge, is the tool-kit we need to reveal the less visible instances of ageism-in-interaction.
Grammaticalization and the linguistic individual: new avenues in lifespan research
Authors: Anthonissen Lynn , Petré Peter
Published: June 2019

This paper reviews theoretical and methodological advances and issues in lifespan research and discusses how the issues at stake are addressed in an ongoing research project. Summarizing the state of the art, we conclude that next to nothing is known about lifespan changes affecting syntactic or grammaticalizing constructions that goes beyond exploratory or anecdotal evidence. TheMind-Bending Grammarsproject, which examines the adaptive powers of adult cognition and constraints on these powers, aspires to make headway in this area. In this paper, we introduce some of the major goals of the project and present a new large-scale longitudinal corpus of 50 adults that was established to study grammatical change across the lifespan. Particular attention is paid to the constraints on the adoption of novel grammatical patterns in the aging mind. Takingbe going toas a case study, we present evidence that (highly educated) healthy monolingual speakers continue to participate in grammatical innovations across the lifespan.
The Equilibrium of Parking Violation and China’s Economic Reform
Authors: Hong Sheng
Published: June 2019

Political decision makers are economic agents who try to maximize self-interests. This simple assumption helps explain China’s decision-making of reform and opening up and shed light on its contradictory political logic. Under a fully planned economy, market liberalization benefits everyone, including political decision makers. After wealth is created in the market economy, political decision-makers have incentives to take a growing share of wealth for themselves if no institutional mechanism exists to check their power. When the proportion of wealth appropriated by political decision-makers exceeds the margin where the people can afford, the market starts to suffer and the growth of wealth is derailed. At the extreme, political decision-makers takes so much wealth to push the entire social economic system to the verge of collapse. Because political decision-makers do not know where the equilibrium margin is, the above thinking has practical consequences. When political decision-makers keep expanding their take of wealth, the worst scenario may occur.
High focusing efficiency in subdiffraction focusing metalens
Authors: Zhuang Ze-Peng , Chen Rui , Fan Zhi-Bin , Pang Xiao-Ning , Dong Jian-Wen
Published: June 2019

Vector beams with phase modulation in a high numerical aperture system are able to break through the diffraction limit. However, the implementation of such a device requires a combination of several discrete bulky optical elements, increasing its complexity and possibility of the optical loss. Dielectric metalens, an ultrathin and planar nanostructure, has a potential to replace bulky optical elements, but its optimization with full-wave simulations is time-consuming. In this paper, an accurate and efficient theoretical model of planar metalens is developed. Based on this model, a twofold optimization scheme is proposed for optimizing the phase profile of metalenses so as to achieve subdiffraction focusing with high focusing efficiency. Then, a metalens that enables to simultaneously generate radially polarized beam (RPB) and modulate its phase under the incidence of x-polarized light with the wavelength of 532 nm is designed. Full-wave simulations show that the designed metalens of NA = 0.95 can achieve subdiffraction focusing (FWHM = 0.429λ) with high transmission efficiency (77.6%) and focusing efficiency (17.2%). Additionally, superoscillation phenomenon is found, leading to a compromise between the subdiffraction spot and high efficiency. The proposed method may provide an accurate and efficient way to achieve sub-wavelength imaging with the expected performances, which shows a potential application in super-resolution imaging.
Stability of PMMA-grafted/Ti hybrid biomaterial interface in corrosive media
Authors: Schott Tiphaine , Liautaud Françoise , Kriegel Sebastien , Faerber Jacques , He Wenjia , Masson Patrick , Pourroy Geneviève , Carradò Adele
Published: June 2019

The stability of interfaces between polymethyl methacrylate (PMMA) and titanium (Ti) are tested in a Ringer solution that is an aggressive medium usually used for biomaterial evaluation. The devices are PMMA-grafted/Ti elaborated via a “grafting-from” method involving three steps, the alkali activation of Ti sheets, their functionalization with an initiator of polymerization through a phosphonate anchoring group and the growth of PMMA brushes. Electrochemical characterizations demonstrate that the stability of the PMMA-grafted/Ti interface in biological medium is satisfactory and that the grafting of PMMA is even acting as a protective barrier for titanium. Indeed, PMMA-grafted/Ti remains passive in Ringer solution until at least +3 V/SCE (saturated calomel electrode), even under inflammatory conditions, while localized corrosion was measured on as-received titanium in similar conditions. This protecting role is attributed to the grafted interface, since spin-coated PMMA does not decrease the corrosion sensitivity of titanium.
How alkali-activated Ti surfaces affect the growth of tethered PMMA chains: a close-up study on the PMMA thickness and surface morphology
Authors: Reggente Melania , Kriegel Sebastien , He Wenjia , Masson Patrick , Pourroy Geneviève , Mura Francesco , Faerber Jacques , Passeri Daniele , Rossi Marco , Palkowski Heinz , Carradò Adele
Published: June 2019

The alkali-activation of titanium (Ti) surfaces performed in a heated sodium hydroxide (NaOH) aqueous solution, results in a porous layer rich in hydroxyl (OH) groups, the structure and porosity of which strongly depend on the reaction time and NaOH concentration used. In this study, a polymerization initiator is covalently grafted on the alkali-activated Ti substrates by using a phosphonic acid as coupling agent and the resulting surfaces are used as scaffolds to drive the growth of tethered poly(methyl methacrylate) (PMMA) chains via a surface initiated atom transfer radical polymerisation (SI-ATRP). A close-up investigation of how different treatment times (1 h, 3 h, 6 h, 12 h, and 24 h) and NaOH concentrations (0.1 M, 0.5 M, 1 M, 2 M, and 5 M) affect the final PMMA morphology and thickness are presented.
Integrability, exact solutions and nonlinear dynamics of a nonisospectral integral-differential system
Authors: Xu Bo , Zhang Sheng
Published: June 2019

The investigations of integrability, exact solutions and dynamics of nonlinear partial differential equations (PDEs) are vital issues in nonlinear mathematical physics. In this paper, we derive and solve a new Lax integrable nonisospectral integral-differential system. To be specific, we first generalize an eigenvalue problem and its adjoint equation by equipping it with a new time-varying spectral parameter. Based on the generalized eigenvalue problem and the adjoint equation, we then derive a new Lax integrable nonisospectral integral-differential system. Furthermore, we obtain exact solutions and their reduced forms of the derived system by extending the famous non-linear Fourier analysis method–inverse scattering transform (IST). Finally, with graphical assistance we simulate a pair of reduced solutions, the dynamical evolutions of which show that the amplitudes of solutions vary with time.
A structural quality evaluation model for three-dimensional simulations
Authors: Kowalczyk Michał , Napieralski Piotr
Published: June 2019

Purpose

In recent years, computer simulations have become an innovative approach which enables research in the field of highly complicated physical phenomena and the study of the laws which govern the universe. The proper interpretation of the results of a visual simulation requires the highest quality of the generated image, as every distortion or mistake may have a significant influence on the readability, accuracy and even credibility of the presentation of the results. The aim of this presentation is to determine a model that enables precise quality evaluation of the three-dimensional visual simulations in the field of structural correctness.

Design/methodology/approach

The developed model is a solution that makes it possible to estimate the quality of stereoscopic image in the context of major three-dimensional structural dysfunctions, namely, vertical parallax, rotation mismatch and scale mismatch. Implementing the wrought theoretical model with the use of cost-effective mechanisms of image feature detection creates a robust method which enables the scalar grade of structural correctness of the studied three-dimensional simulation to be computed.

Findings

On the basis of the conducted research, in particular, taking into account three-dimensional simulations, it was stated that the formulated model with the developed method provides an efficient, structural quality estimation tool applicable for a wide variety of three-dimensional images. The obtained results indicate that the wrought method has huge potential in the application of high-resolution simulations by enabling a screening test of the structural quality of the stereoscopic view in quasi-real time.

Practical implications

The developed method may be used both in order to verify the quality of ready-to-use three-dimensional image and also at the stage of the calibration of input parameters of the simulation.

Originality/value

The paper takes into account the selection of the most significant distortions which occur in visual, three-dimensional simulations providing a cost-effective and versatile tool which allows for the detection and elimination of serious mistakes and dysfunctions as early as at the calibration stage.
225Ac/213Bi generator based on inorganic sorbents
Authors: Vasiliev Aleksandr N. , Ermolaev Stanislav V. , Lapshina Elena V. , Zhuikov Boris L. , Betenekov Nikolay D.
Published: June 2019

A scheme of an “inverse” generator based on an inorganic sorbent (annealed zirconium and yttrium mixture oxides) has been proposed and tested. The generator demonstrated high yield of the 213Bi product (up to 97 % in 0.5 mL of eluate), high degree of purification from the actinium isotopes (up to 10−2 % of initial 225Ac in 3 M NaNO3 solution), as well as the products of 227Ac decay, and low radiation impact on the sorbent. Application of circulating approach to the sorption of 213Bi provides decreasing processing time to 5 min at higher yield of the product.
A New Testing Method for the Characterization of the Tension-Compression Cyclic Behavior of Rock Salt
Authors: Liu Jianfeng , Wang Chunping , Pei Jianliang , Wang Lu , Xu Huining , Deng Chaofu
Published: June 2019

To improve the stability of salt cavern gas storage, the tension-compression cyclic behavior of surrounding rock must be correctly characterized. This article proposes a new tension-compression cyclic testing method in which a rock specimen–fixing device with position-limit spring components is provided. The fixing device can both bear compressive stress and direct tensile stress, that is, the new testing method implements a completely reversed stress condition: direct tensile stress and compressive stress. Investigations on the tension-compression cyclic behavior of pure rock salt and impure rock salt were undertaken using this method. In the experiment, four cycles of tension-compression alternation loading were carried out first, then a tensile stress was applied until the occurrence of rock failure. The axial stress-strain curve of pure rock salt shows hysteretic behavior within each cycle. The damage evolution process induced by the tension-compression cyclic stress was illustrated by the spatial distribution of acoustic emission (AE) events and the variation of AE cumulative counts. The experimental results indicate that the developed method can be easily applied to investigate the tension-compression cyclic behavior of rock material.
Richard Falk: “Citizen Pilgrim” in the Role of UN Special Rapporteur
Authors: Turner Mandy
Published: June 2019

Richard Falk's quest to combine academic scholarship with political activism is witnessed throughout his lifework, but perhaps especially so during his tenure as United Nations special rapporteur on human rights in the Palestinian territories occupied since 1967, a position he held from 2008 to 2014. Falk is a vocal critic of Israel's occupation and a staunch supporter of Palestinian selfdetermination, positions that have drawn strong condemnation from Israel and its supporters, but praise from Palestinians and their supporters. There is little doubt that Falk's work has had a huge influence on public debate and activism pertaining to this issue, both within Israel-Palestine as well as globally. This article outlines Falk's scholarship and activism regarding Palestine, analyzes the post of UN special rapporteur in general, reviews both criticism of and support for Falk's work, and assesses Falk's concept of the “citizen pilgrim.” It concludes by reflecting on what this reveals about the experience of praxis for politically engaged academics.
A Genealogy of Narcissism: Percy Shelley’s Self-Love
Authors: Freer Alexander
Published: June 2019

Alexander Freer, “A Genealogy of Narcissism: Percy Shelley’s Self-Love” (pp. 1–29)

Readers have long considered Percy Shelley narcissistic. They have good reason: his account of love is premised on a lover’s thirst for likeness. Yet Shelley’s idea of love also obliges us to rethink the concept of narcissism, and especially its relations to solipsism and selfishness. Shelley works through Plato’s accounts of love in his translation of The Symposium, titled The Banquet (1818), and the accompanying Discourse on the Manners of the Antient Greeks, before developing a related but distinct account of his own, in which lovers seek from each other the things that they already know but cannot otherwise enjoy. Ultimately, Shelley’s self-love is not a form of solitary satisfaction, but an ethical and aesthetic project that is dependent on the recognition of another. Tracing Shelley’s thinking on love from his engagement with Plato to his own poetry and prose, this essay develops an alternate, non-Freudian genealogy of narcissism.
Differences Between the Raw Material and the Products ofde NovoGene Birth Can Result from Mutational Biases
Authors: Nielly-Thibault Lou , Landry Christian R
Published: June 2019

Proteins are among the most important constituents of biological systems. Because all protein-coding genes have a noncoding ancestral form, the properties of noncoding sequences and how they shape the birth of novel proteins may influence the structure and function of all proteins. Differences between the properties of young proteins and random expectations from noncoding sequences have previously been interpreted as the result of natural selection. However, interpreting such deviations requires a yet-unattained understanding of the raw material of de novo gene birth and its relation to novel functional proteins. We mathematically show that the average properties and selective filtering of the “junk” polypeptides of which this raw material is composed are not the only factors influencing the properties of novel functional proteins. We find that in some biological scenarios, they also depend on the variance of the properties of junk polypeptides and their correlation with the rate of allelic turnover, which may itself depend on mutational biases. This suggests for instance that any property of polypeptides that accelerates their exploration of the sequence space could be overrepresented in novel functional proteins, even if it has a limited effect on adaptive value. To exemplify the use of our general theoretical results, we build a simple model that predicts the mean length and mean intrinsic disorder of novel functional proteins from the genomic GC content and a single evolutionary parameter. This work provides a theoretical framework that can guide the prediction and interpretation of results when studying the de novo emergence of protein-coding genes.
WolbachiaAcquisition byDrosophila yakuba-Clade Hosts and Transfer of Incompatibility Loci Between Distantly RelatedWolbachia
Authors: Cooper Brandon S , Vanderpool Dan , Conner William R , Matute Daniel R , Turelli Michael
Published: June 2019

Maternally transmitted Wolbachia infect about half of insect species, yet the predominant mode(s) of Wolbachia acquisition remains uncertain. Species-specific associations could be old, with Wolbachia and hosts codiversifying (i.e., cladogenic acquisition), or relatively young and acquired by horizontal transfer or introgression. The three Drosophila yakuba-clade hosts [(D. santomea, D. yakuba) D. teissieri] diverged ∼3 MYA and currently hybridize on the West African islands Bioko and São Tomé. Each species is polymorphic for nearly identical Wolbachia that cause weak cytoplasmic incompatibility (CI)–reduced egg hatch when uninfected females mate with infected males. D. yakuba-clade Wolbachia are closely related to wMel, globally polymorphic in D. melanogaster. We use draft Wolbachia and mitochondrial genomes to demonstrate that D. yakuba-clade phylogenies for Wolbachia and mitochondria tend to follow host nuclear phylogenies. However, roughly half of D. santomea individuals, sampled both inside and outside of the São Tomé hybrid zone, have introgressed D. yakuba mitochondria. Both mitochondria and Wolbachia possess far more recent common ancestors than the bulk of the host nuclear genomes, precluding cladogenic Wolbachia acquisition. General concordance of Wolbachia and mitochondrial phylogenies suggests that horizontal transmission is rare, but varying relative rates of molecular divergence complicate chronogram-based statistical tests. Loci that cause CI in wMel are disrupted in D. yakuba-clade Wolbachia; but a second set of loci predicted to cause CI are located in the same WO prophage region. These alternative CI loci seem to have been acquired horizontally from distantly related Wolbachia, with transfer mediated by flanking Wolbachia-specific ISWpi1 transposons.
Long-term effects of bilateral subthalamic nucleus stimulation on sleep in patients with Parkinson’s disease v1
Authors: Choi Ji-Hyun
Published: June 2019

Abstract Objectives: Deep brain stimulation (DBS) of the subthalamic nucleus (STN) has been reported to have a positive effect on sleep-wake disturbance in Parkinson's disease (PD). The objective of this study was to assess the long-term effects of STN DBS on sleep in patients with PD. Methods: Sixty-one patients with PD who had received bilateral STN DBS were followed for 3 years with assessments including the Parkinson’s disease sleep scale (PDSS), Epworth sleepiness scale (ESS), total sleep hours per day, Unified PD Rating Scale part I-III, Hoehn & Yahr stage, levodopa equivalent dose, quality of life measure, and depression scale measured preoperatively and at 6 months after postoperatively and annually thereafter. Results: Among the 61 patients at baseline, 46 patients completed the last follow-up assessment. The total PDSS score significantly improved after STN DBS from baseline up to 3 years after STN DBS (79.0±30, 100.0±23.3, 98.8±23.0, 97.1±29.6, and 93.3±28.0 at baseline, 6, 12, 24, and 36 months, respectively, p = 0.006 for the change over time). Among the eight PDSS domains, the domains for overall quality of a night’s sleep, sleep onset and maintenance insomnia, and nocturnal motor symptoms showed significant improvement after STN DBS (p = 0.036, 0.029, and < 0.001, respectively, for the change over time). The total sleep hours per day were increased, but the total ESS score did not show significant change after STN DBS (p = 0.001 and 0.055, respectively, for the change over time). Changes in the total PDSS were associated with changes in the depression and motivation items in the Unified PD Rating Scale part I, depression scale, and quality of life measure, but those variables at baseline were not predictive of changes in the total PDSS after STN DBS. Conclusion: In the largest systematic long-term follow-up study, the improvement in subjective sleep quality after bilateral STN DBS was sustained in PD patients. Improved nocturnal sleep and nocturnal motor symptoms after STN DBS were correlated with an improved mood and quality of life. However, STN DBS did not reduce excessive daytime sleepiness despite reductions in antiparkinsonian medications.
Isolate prokaryotes from sponge tissue (SAP) v1
Authors: Thomas Jahn Martin
Published: June 2019

Protocoll to create a fixed suspension of sponge associated prokaryotes (SAP) from sponge tissue.This can serve as the basis for Fluorescence in situ hybridisation and/or cell sorting. This protocol was tested for different sponge species but might also be adapted to other organisms (let others know) The protocol was modified from : Fieseler L, Horn M, Wagner M, Hentschel U. (2006) Discovery of the novel candidate phylum "Potibactetia" in marine sponges (vol 70, pg 3724, 2004). Applied and Environmental Microbiology;72(8):5677-. PMID:15184179 DOI:10.1128/AEM.70.6.3724-3732.2004
Conversion of Waste Processing of the Vegetative Part of the Poplar by Indigenous Strains of Fungi of the Genus Trichoderma
Authors: Mamaeva Olga O. , Isaeva Elena V. , Ryazanova Tatyana V.
Published: June 2019

The article presents the results of a study of the impact of the enzyme complex strains M99-9 and K6-15 micro-peach fungi of the genus Trichoderma on a mixed substrate. It is established that in the process of biodegradation with strains K6-15 M99-9 in the substrate reduced content of extractives 2.1-2.4 times that of the polysaccharide is 1.5-1.8 times, and ligninase substances 1.2-1.4 times. This was an accumulation of up to 9-12% of humic substances. The decrease in the mass of the substrate during the cultivation of the strain M99-9 was 17.3%, and the strain K6 – 15-30% less. The most productive on this substrate is strain K6-15. The growth of conidia within two weeks of cultivation for strain K6-15 was 16.6·108 CFU/g and strain M99-9 – 11,5·108 CFU/g. High yield of spores and formation of humic substances during cultivation of fungi of the genus Trichoderma makes it possible to use the vegetative part of a poplar as raw materials for receiving a biological product “Trichodermin” or humification of the soil
Estimation of sand electrification influence on locomotive wheel/ rail adhesion processes
Authors: Gorbunov Mykola , Kravchenko Kateryna , Bureika Gintautas , Gerlici Juraj , Nozhenko Olena , Vaičiūnas Gediminas , Bučinskas Vytautas , Steišūnas Stasys
Published: June 2019

The article describes a method of increasing the adhesion of the wheel to the rail based on the preliminary electrification of the
abrasive-air mixture before its feed into a contact. A simulation model of the movement of sand in the system “injecting nozzle of
a sandbox - a rail” is presented. The effectiveness of the proposed method to improve adhesion is confirmed experimentally. The
results of experiments carried out on a friction machine, which characterize the change in friction ratio depending on the temperature with different methods of sand supply, are presented. The reduction in the consumption of sand caused by its electrification and
the supply of a rational amount of abrasive substance into the contact of the wheel with the rail is estimated.
The assessment of acoustic effects of exploited road vehicles with the use of subjective features of sound
Authors: Paszkowski Waldemar
Published: June 2019

The article proposed an original way to assess the acoustic effects of road vehicles in the environment, with the use of selected methods of sound modeling and simulation. The taken solution presents a way of estimating the acoustic emission to the environment, from the exploited road vehicles, using subjective sound features. In ongoing studies, it is assumed to analyze and evaluate the sound features in the following order: source - propagation way - receiver. The distribution of these features in the time and frequency domains depends on generation, propagation and immission of acoustic energy, by the partial sources of the vehicle. The obtained information in the form of an acoustic signal can be represented by physical and subjective features of the sound. The undertaken research include the use of subjective features of sound in the assessment of acoustic effects of road vehicles exploited in the environment. The developed method was verified using modeling and simulation methods based on recorded acoustic signals in an urbanized environment.
Selective Multi Keys to Modify RSA Algorithm
Authors: Abdulrazzaq Maiwan
Published: June 2019

The use of the internet and communication technology noticeably contributes to development in all branches of science. The data that is transferred to communication channel are unsecured. Cryptography including security and integrity is a domain that provides policies for having privacy of the data. Protection of the data transferred through the internet is very important since such data when transferred through an unprotected channel may be attacked by a third party. RSA represents one of the public key cryptography methods that generate the modulus using two primes. These two primes represent the weakness of RSA benefited from and used by attackers. This paper proposes a new modified RSA method using selective multi keys encryption and decryption for the same modulus instead of using two keys, one for encryption and the other for decryption. This new method guarantees and increases the security of RSA.
The Weighted Residual Method in Solution of More General Nonlinear Integro-Fractional Differential Equation of Volterra Hammerstein Type with Variable Coefficients
Authors: Ahmed Shazad , Ahmed Mariwan
Published: June 2019

In this paper, we solve numerically Volterra-Hammerstein (V-H) Integro-Differential Equations (IDE’s) of various fractional order  in the Caputo sense by the well-known (Collocation, Sub-domain, Least-square, and Galerkin) weighted residual method. This method is utilized to converts the integro-fractional differential equation to a matrix equation which corresponds to a system of nonlinear algebraic equations with unknown polynomial coefficients. A good algorithm for treating numerically our problem by applying the above process has been developed, in order to express these solutions, programs are written in MatLab (V.8). The validity and reliability of this method are tested by several illustrative numerical examples with the known exact solution, the behaviors of the error are examined, and the obtained results reveal that the method is more accurate and efficient.
Maternal morbidity in emergency lower segment cesarean section
Authors: Kalpana P. , Praveena T.
Published: June 2019

Background: With a steep fall in maternal mortality and morbidity and with much more liberalization of indications, the incidence of cesarean section rate has greatly increased over the last thirty years and almost doubled in the current decade. The objective of this study was to study incidence of maternal morbidity in emergency lower segment cesarean section.Methods: Hospital based prospective study was carried out among 200 women undergoing emergency lower segment cesarean section. Data relating to demographic characteristics, clinical characteristics, maternal and fetal indications, incidence of morbidity, and types of morbidities, Intra operative complications, and Post operative complications was noted down. Chi square and odds ratio was used for statistical analysis.Results: The incidence of LSCS was 24.21%. Incidence of emergency LSCS was 96.74%. 71% were having primary LSCS and 20.5% were booked cases. The most common maternal indication for emergency LSCS was pregnancy induced hypertension and eclampsia in 32.5% of the cases. The most common fetal indication for emergency LSCS was fetal distress in 60%. Incidence of morbidity was 35% and it was associated with booking status, parity and social class. Incidence of intraoperative complications was 23.5%. Majority (18.5%) developed febrile morbidity followed by wound sepsis in 12.5%, urinary tract infection in 8%, mastitis in 7.5%, respiratory tract infection in 7%, wound gaping in 4%, paralytic ileus in 3%, endometritis in 2.5%, postpartum hemorrhage in 1.5%, 2 cases of burst abdomen and one case of small bowel obstruction.Conclusions: Emergency LSCS was more common than elective LSCS and it was associated with booking status, parity and social class.
In Vitro Microleakage Comparison of Flowable Nanocomposites and Conventional Materials Used in Pit and Fissure Sealant Therapy
Authors: Arastoo Sara , Behbudi Azam , Rakhshan Vahid
Published: June 2019

Objectives: Pit and fissure sealants are recognized as an effective preventive approach in pediatric dentistry. Composite resin is the most commonly used sealant material. Adding nanoparticles to composite resin could result in production of flowable composite with higher mechanical properties and better flowability than previous sealants. This study aimed to compare the microleakage of a flowable nanocomposite and materials conventionally used as pit and fissure sealants.
Materials and Methods: A total of 185 extracted mandibular third molar teeth were selected and randomly divided into 5 groups (n=36): flowable nanocomposite, flowable composite, filled sealants, nano-filled sealants, and unfilled sealants. Five teeth were reserved for examination under a scanning electron microscope (SEM). The samples were thermocycled (5-55°C, 1-minute dwell time) for 1000 cycles and immersed in 0.2% fuchsine solution for 24 hours. Teeth were sectioned buccolingually. Microleakage was assessed qualitatively and quantitatively by means of dye penetration and SEM. Data were analyzed using chi-square, Kruskal-Wallis, and Bonferroni-corrected Mann-Whitney U tests.
Results: Qualitative microleakage assessment showed that flowable composite and nanofilled flowable composite had almost no microleakage (P<0.001). Regarding quantitative scores, the nanofilled flowable composite and unfilled fissure sealant showed the lowest and the highest rate of microleakage, respectively. No statistically significant difference was found between the two flowable composites (P=0.317). Filled resin-based sealant had significantly lower microleakage than unfilled resin-based sealant (P<0.001).
Conclusion: Use of flowable and nanofilled flowable composites (but not unfilled resin-based fissure sealant) is recommended for sealing of pits and fissures of molars.
Shear Bond Strength of Self-Adhesive Flowable Composite, Conventional Flowable Composite and Resin-Modified Glass Ionomer Cement to Primary Dentin
Authors: Poorzandpoush Kiana , Shahrabi Mehdi , Heidari Alireza , Sadat Hosseinipour Zohre
Published: June 2019

Objectives: This study aimed to compare the shear bond strength (SBS) of self-adhesive and conventional flowable composites and resin-modified glass-ionomer cement (RMGIC) to primary dentin.
Materials and Methods: In this in vitro, experimental study, the buccal surface of 48 primary canine and first molar teeth was longitudinally sectioned to expose dentin. The teeth were randomly divided into three groups (n=16) of 37.5% phosphoric acid+ OptiBond+ Premise Flow composite (group 1), Vertise Flow composite (group 2) and RMGIC (group 3). A plastic cylindrical mold was placed on the exposed dentin and filled with restorative materials. The samples were then immersed in distilled water at 37°C for 24 hours, subjected to 1000 thermal cycles between 5-55°C and underwent SBS test. The mode of failure was determined under a stereomicroscope. Data were analyzed using one-way ANOVA and Tukey’s test.
Results: A significant difference was noted in SBS of the groups (P<0.05). The SBS of conventional flowable composite was significantly higher that of RMGIC and self-adhesive flowable composite (P<0.05). The difference in SBS of RMGIC and self-adhesive flowable composite was not significant (P>0.05). Failure at the dentin-restoration interface (adhesive failure) had the highest frequency in groups 1 and 2. The frequency of adhesive failure was 100% in group 3.
Conclusions: Within the limitations of this study, the conventional flowable composite yielded the highest SBS to primary dentin. Self-adhesive flowable composite and RMGIC showed the lowest SBS with no significant difference with each other.
Fracture Resistance of a Bulk-Fill and a Conventional Composite and a Combination of Both for Coronal Restoration of Severely Damaged Primary Anterior Teeth
Authors: Mosharrafian Shahram , Shafizadeh Maryam , Sharifi Zeinab
Published: June 2019

Objectives: This study aimed to compare the fracture resistance of a bulk-fill and a conventional composite and a combination of both for coronal restoration of severely damaged primary anterior teeth.
Materials and Methods: In this in vitro experimental study, 45 primary anterior teeth were randomly divided into three groups. After root canal preparation, the canals were filled with Metapex paste such that after the application of 1 mm of light-cure liner, 3 mm of the coronal third of the canal remained empty for composite post fabrication. Filtek Z250 conventional composite was used in group 1, Sonic-Fill bulk-fill composite was used in group 2 and Sonic-Fill with one layer of Filtek Z250 as the veneering were used in group 3. Adper Single Bond 2 was used in all groups. The teeth were thermocycled, and fracture resistance was measured by a universal testing machine. The mode of fracture was categorized as repairable or irreparable. Data were analyzed using one-way ANOVA.
Results: The mean fracture resistance was 307.00±74.72, 323.31±84.28 and 333.30±63.96 N in groups 1 to 3, respectively (P=0.55). The mean fracture strength was 14.53±2.98, 15.08±2.82 and 15.26±3.02 MPa in groups 1 to 3, respectively (P=0.77). The frequency of repairable mode of failure was 80% for the conventional, 73.6% for the bulk-fill and 80% for the bulk-fill plus conventional group, with no significant difference (P>0.05).
Conclusions: Bulk-fill composites can be used for coronal reconstruction of severely damaged primary anterior teeth similar to conventional composites to decrease the treatment time in pediatric patients.
Sağlık Çalışanlarının Öz Liderlik Düzeylerinin Sosyo-Demografik Değişkenler Açısından İncelenmesi
Authors: ÇAKMAK Cuma , UĞURLUOĞLU Özgür
Published: June 2019

Bu
çalışmanın amacı, sağlık çalışanlarının öz liderlik düzeylerinin
sosyo-demografik özelliklerine göre farklılaşıp farklılaşmadığı belirlemektir.
Araştırma, Ankara’daki bir eğitim ve araştırma hastanesinde görev yapan sağlık
çalışanlarına yönelik gerçekleştirilmiştir. Anketler yoluyla, araştırma
kapsamında 357 sağlık çalışanına ulaşılmış ve bu kişilerden elde edilen veriler
değerlendirilmiştir. Sağlık çalışanlarının öz liderlik alt boyutlarıyla ilgili
değerlendirmelerinin sosyo-demografik özelliklere göre farklılaşıp
farklılaşmadığını ortaya koymak amacıyla iki ortalama arasındaki farkın
önemlilik testi (standart t testi) ve tek yönlü varyans analizi (F testi-ANOVA)
kullanılmıştır. Gruplar arasında anlamlı farklılıklar bulunması durumunda anlamlılığın
hangi gruptan kaynaklandığını bulmak amacıyla Post-hoc testlerinden biri olan
Tukey HSD testinden faydalanılmıştır. Analizler sonucunda, öz liderliğin alt
boyutlarına ilişkin ortalamalar, çalışanların, cinsiyet, yaş, medeni durum,
hastanedeki görev, gelir durumu, sektördeki toplam çalışma süresi ve
çalışanların liderlik eğitimi alıp almama durumlarına göre istatistiksel olarak
anlamlı bir şekilde farklılaşmaktadır. Sonuç olarak, sağlık çalışanlarının
sosyo-demografik özelliklerine göre öz liderlik düzeylerinin farklılaştığı
tespit edilmiştir.
İlkokul Öğrencilerinin Değişen Davranış, Kişilik ve Tutum Özelliklerinin İncelenmesi
Authors: BABAYİĞİT Özgür
Published: June 2019

Bu araştırmanın amacı ilkokul öğrencilerinin değişen davranış, kişilik ve tutum özelliklerinin incelenmesidir. Araştırma, nitel araştırma yöntemlerinden birisi olan fenomenoloji yöntemiyle gerçekleştirilmiştir. Araştırmanın katılımcılarını Yozgat il merkezindeki bir ilkokulda görevli 17 sınıf öğretmeni oluşturmaktadır. Veri toplama aracı olarak yarı yapılandırılmış görüşme formu kullanılmıştır. Veriler 2018 yılı mayıs ayında toplanmıştır. Yarı yapılandırılmış görüşme formu ile birlikte 17 sınıf öğretmeniyle görüşmeler yapılmıştır. Verilerin analizinde içerik analizi kullanılmıştır. Araştırma sonucunda ilkokul öğrencilerinin teknoloji kullanma becerilerinde artış, özgüven artışı, öğrenme kapasitelerinde artış tespit edilmiştir. Ancak saygı ve sevgide azalma, sosyalleşmede problemler, benmerkezcilik, sorumluluk bilincinde azalma belirlenmiştir.
Relación entre desempeño docente y satisfacción en enfermeras egresadas de maestría en una universidad pública
Authors: Reyes Parionato Lucio Similiano
Published: June 2019

Objetivo: Determinar la relación entre el desempeño de los docentes de maestría en enfermería con el nivel de satisfacción de enfermeras egresadas en una universidad Pública de Lima. Material y Métodos: Estudio cuantitativo, correlacional y transversal. La población estuvo constituida por 30 egresados de maestría en enfermería de una universidad pública de Lima- Perú. Se validaron 2 cuestionarios; para desempeño docente y nivel de satisfacción, obteniendo alfa de Crombach de 0,83 y 0,89 respectivamente. Resultados: Los participantes se caracterizaron por tener entre 31 y 35 años (40%), de sexo femenino (83,3%) y ser solteros (70%). Respecto a desempeño docente predominó el nivel regular (60%) y nivel medio de satisfacción (53,3%). Se encontró correlación positiva media de 0,62 entre las variables (p <0,001). Conclusiones: Parece ser que el desempeño de los docentes de maestría en enfermería se relaciona significativamente con el nivel de satisfacción de los egresados, por lo que es sugerente tomar en cuenta los resultados con el fin de elevar la calidad educativa en este nivel de estudio.