bluuebunny/crossref_metadata_2025 huggingface dataset:
Online Feature Selection (OFS) with Accelerated Bat Algorithm (ABA) and Ensemble Incremental Deep Multiple Layer Perceptron (EIDMLP) for big data streams
Authors: Renuka Devi D. , Sasikala S.
Published: November 2019

Feature selection is mainly used to lessen the dispensation load of data mining models. To condense the time for processing voluminous data, parallel processing is carried out with MapReduce (MR) technique. However with the existing algorithms, the performance of the classifiers needs substantial improvement. MR method, which is recommended in this research work, will perform feature selection in parallel which progresses the performance. To enhance the efficacy of the classifier, this research work proposes an innovative Online Feature Selection (OFS)–Accelerated Bat Algorithm (ABA) and a framework for applications that streams the features in advance with indefinite knowledge of the feature space. The concrete OFS-ABA method is suggested to select significant and non-superfluous feature with MapReduce (MR) framework. Finally, Ensemble Incremental Deep Multiple Layer Perceptron (EIDMLP) classifier is applied to classify the dataset samples. The outputs of homogeneous IDMLP classifiers were combined using the EIDMPL classifier. The projected feature selection method along with the classifier is evaluated expansively on three datasets of high dimensionality. In this research work, MR-OFS-ABA method has shown enhanced performance than the existing feature selection methods namely PSO, APSO and ASAMO (Accelerated Simulated Annealing and Mutation Operator). The result of the EIDMLP classifier is compared with other existing classifiers such as Naïve Bayes (NB), Hoeffding tree (HT), and Fuzzy Minimal Consistent Class Subset Coverage (FMCCSC)-KNN (K Nearest Neighbour). The methodology is applied to three datasets and results were compared with four classifiers and three state-of-the-art feature selection algorithms. The outcome of this research work has shown enhanced performance in accuracy and less processing time.
Seepage investigations of heterogeneous soils beneath some buildings using geophysical approaches: example from southwestern Nigeria
Authors: Salako Adebayo Olayinka , Osotuyi Abayomi Gaius , Adepelumi Adekunle Abraham
Published: November 2019

Buildings along the flood plain of River Osun, southwest Nigeria, are usually thought of as been a safe haven for residence over the years. But in recent times with vast (increasing) population and growing urbanization, some of the buildings currently experience structural damages not related to constructional designs but rather ground conditions around building foundations. The ground conditions (seepages in this case) and how it influences properties of soils (water moisture, permeability etc.) to support the foundation of buildings. This paper attempts to map out seepages in heterogeneous soils around buildings in Erinle, southwest Nigeria where building cracks probably as a result of water seepages from subsurface through fissures and fractures where noticed. These cracks are a probable manifestation of a weakened foundation that could overtime result to a collapse, hence the need to investigate seepage prone zones. To achieve this, electrical resistivity (ER) and Electromagnetic Ground Penetrating Radar (EM-GPR) surveys were made along affected buildings to map out possible causes of deterioration. Geo-sections (analyzed ER data) shows high resistivity layer (topsoil) underlain by low resistivity layer (weathered basement) confirmed by planer reflections (topsoil) and fairly smooth to smooth reflections (weathered basement) in Radargrams (analyzed GPR data). An integration of the geo-section and radargram produced from ER and GPR data shows that buildings along traverses 1, 2, 3 and 5 is most prone to seepages especially as it exhibits very low anomalously resistivity values (< 25 Ωm) but this is not the case for buildings along traverses 4, 6, 7 and 8.
Granisetron plus aprepitant versus granisetron in preventing nausea and vomiting during CHOP or R-CHOP regimen in malignant lymphoma: a retrospective study
Authors: Wakasugi Yoshinori , Noda Satoshi , Ikuno Yoshihiro , Horie Miya , Kito Katsuyuki , Minamiguchi Hitoshi , Terada Tomohiro
Published: November 2019

Background

Cyclophosphamide, doxorubicin, vincristine, and prednisolone (CHOP) regimen includes a high dose of prednisolone (100 mg/body), which exhibits an anticancer and antiemetic effect. However, its optimal use for antiemetic therapy has not been established yet. We assessed the efficacy of granisetron plus aprepitant versus granisetron for CHOP or rituximab-CHOP (R-CHOP) regimen-induced nausea and vomiting in malignant lymphoma.

Methods

This retrospective and observational clinical study included patients who received CHOP or R-CHOP regimen as initiating chemotherapy between July 2010 and March 2016 (N = 39). Patients were assigned to an aprepitant [aprepitant (125 mg on day 1, 80 mg on days 2–3) plus granisetron (3 mg); n = 15] or control regimen group [granisetron (3 mg); n = 24]. Complete response (CR), defined as no vomiting and no use of rescue therapy during overall phase (0–120 h), was the primary endpoint. Secondary endpoints included the time to first vomiting and using rescue medication and complete protection (CP) defined as no vomiting and no retching and/or no nausea and no rescue therapy. The patient records were investigated, and data were retrospectively analyzed.

Results

CR rate CP rates did not significantly differ between the groups during the observation period (80.0% versus 83.3%, p = 1.000; and 80.0% versus 79.2%, p = 1.000, respectively). Additionally, the time to first vomiting and using rescue medication in did not significantly differ between the groups (p = 0.909).

Conclusions

This study suggests that granisetron alone could be one treatment option in the management of CINV in patients with non-Hodgkin lymphoma receiving CHOP or R-CHOP regimen.
Effect of photoinitiator on chain degradation of hyaluronic acid
Authors: Hong Bo Min , Park Su A , Park Won Ho
Published: November 2019

Objectives

Photocrosslinking systems of polymers have been widely studied using UV or visible light irradiation. However, the photodegradation behavior derived from light irradiation was rarely reported, comparing with the photocrosslinking. In this study, the tyramine-modified hyaluronic acid (HA/Tyr) hydrogel was prepared using riboflavin (RF) as a photoinitiator, and the degradation behavior of HA by the reactive oxygen species (ROS) generated in photochemical process was investigated.

Materials and methods

The HA/Tyr conjugate was synthesized by EDC/NHS chemistry to introduce phenol group. Degree of substitution (DS, %) of phenol group to HA molecule was about 25%. The structural change of HA/Tyr was measured by proton nuclear magnetic resonance (
1
H-NMR) and attenuated total reflectance infrared spectroscopy (ATR-FTIR), and the rheological properties of photocrosslinked HA/Tyr hydrogel were investigated by rheometer.

Results

The HA/Tyr solution with 25% substitution formed a stable hydrogel via visible light irradiation in the presence of RF photoinitiator. Rheological data of HA/Tyr solution showed that the storage modulus (G’) was increased with increasing HA concentration. Additionally, it was found that RF initiated by visible light irradiation induced the degradation of HA molecular chain, and consequently reduced the viscosity of HA/Tyr solutions.

Conclusion

The results indicate that RF-based photoinitiator system caused the degradation of HA molecule by ROS generated in photochemical process as well as the crosslinking of HA/Tyr.
China – Pakistan economic corridor: a harbinger of economic prosperity and regional peace
Authors: Khursheed Ambreen , Haider Syed Karrar , Mustafa Faisal , Akhtar Ayesha
Published: November 2019

Provincial connectivity and growth are connected to visualization of mutual progress and economic development. This is the viewpoint behind the establishment of China-Pakistan Economic Corridor (CPEC). Developing new transport infrastructure, Gwadar Port Projects and several energy generating projects, are one of the key projects of CPEC, “All Weather Strategic Friendship” is therefore proved for Pakistan and China. China’s pilot project of “Belt and Road Initiative” is the key plan, which led to the development of CPEC. It is expected from CPEC that it will reduce the transportation cost of China by providing a shorter route for China’s trade to Persian Gulf and it will provide a solution to the energy shortfalls in Pakistan. Moreover, CPEC’s projected prospects of economic advancement, there are some economic, security and political threats in Pakistan. This paper proposes to illuminate the significant Geo-strategic importance, opportunities and challenges for China Pakistan Economic Corridor, and it envisages to broaden the base, by including energy rich, Tajikistan economic role model Turkey and strategically located Iran. Hence, this paper provides a holistic view of previous researches on the planned subject and is not involving any data analysis as existing researches had used for analyzing a review of prospects and challenges.
Open software and standards in the realm of laser scanning technology
Authors: Pirotti Francesco
Published: November 2019

This review aims at introducing laser scanning technology and providing an overview of the contribution of open source projects for supporting the utilization and analysis of laser scanning data. Lidar technology is pushing to new frontiers in mapping and surveying topographic data. The open source community has supported this by providing libraries, standards, interfaces, modules all the way to full software. Such open solutions provide scientists and end-users valuable tools to access and work with lidar data, fostering new cutting-edge investigation and improvements of existing methods.

The first part of this work provides an introduction on laser scanning principles, with references for further reading. It is followed by sections respectively reporting on open standards and formats for lidar data, tools and finally web-based solutions for accessing lidar data. It is not intended to provide a thorough review of state of the art regarding lidar technology itself, but to provide an overview of the open source toolkits available to the community to access, visualize, edit and process point clouds. A range of open source features for lidar data access and analysis is provided, providing an overview of what can be done with alternatives to commercial end-to-end solutions. Data standards and formats are also discussed, showing what are the challenges for storing and accessing massive point clouds.

The desiderata are to provide scientists that have not yet worked with lidar data an overview of how this technology works and what open source tools can be a valid solution for their needs in analysing such data. Researchers that are already involved with lidar data will hopefully get ideas on integrating and improving their workflow through open source solutions.
Shipping digitalization management: conceptualization, typology and antecedents
Authors: Lambrou Maria , Watanabe Daisuke , Iida Junya
Published: November 2019

Digital transformation is a topical theme in shipping research and professional practice, today. Our paper aims at developing a comprehensive framework of digitalization technologies and their maritime business implications, grounded on available evidence. In order to understand the full complexity of shipping digitalization activities, we addressed technology and management aspects in a coalesced framework. Our research follows a qualitative, case study approach. Five cases of advanced, shipping incumbents’ digitalization activities were investigated. Our research outcome is an overarching theoretical model, which systematizes the technological components (technology typology), the prevailing management rationales (strategic drivers) and determinant factors (practices) of shipping digitalization.
3D printed PLA Army-Navy retractors when used as linear retractors yield clinically acceptable tolerances
Authors: Chen Joshua V. , Dang Alexis B. C. , Lee Carlin S. , Dang Alan B. C.
Published: November 2019

Background

Modern low-cost 3D printing technologies offer the promise of access to surgical tools in resource scarce areas, however optimal designs for manufacturing have not yet been established. We explore how the optimization of 3D printing parameters when manufacturing polylactic acid filament based Army-Navy retractors vastly increases the strength of retractors, and investigate sources of variability in retractor strength, material cost, printing time, and parameter limitations.

Methods

Standard retractors were printed from various polylactic acid filament spools intra-manufacturer and inter-manufacturer to measure variability in retractor strength. Printing parameters were systematically varied to determine optimum printing parameters. These parameters include retractor width, thickness, infill percentage, infill geometry, perimeter number, and a reinforced joint design. Estimated retractor mass from computer models allows us to estimate material cost.

Results

We found statistically significant differences in retractor strength between spools of the same manufacturer and between manufacturers. We determined the true strength optimized retractor to have 30% infill, 3 perimeters, 0.25 in. thickness, 0.75 in. width, and has “Triangle” infill geometry and reinforced joints, failing at more than 15X the threshold for clinically excessive retraction and costs $1.25 USD.

Conclusions

The optimization of 3D printed Army-Navy retractors greatly improve the efficacy of this instrument and expedite the adoption of 3D printing technology in many diverse fields in medicine not necessarily limited to resource poor settings.
The Brazillian version of the hand mobility in scleroderma (HAMIS) test: translation and validation
Authors: Azevedo Pedro Ming , Sanson Estefânia Sartorato , Skare Thelma Larocca , dos Santos Thiago Alberto Fernandes Gomes , Martin Patricia
Published: November 2019

Background

The Hand Mobility in Scleroderma (HAMIS) test was created to measure the degree of dysfunction of hand movements imposed by systemic sclerosis (SSc). The modified version (mHAMIS), with 4 of the 9 original items, was developed later. The goal of the present study was to translate and validate HAMIS and mHAMIS into Brazilian Portuguese and culture.

Methods

After direct and reverse translation and comprehension test in 10 SSc patients, HAMIS-Br was applied to another 32 patients with SSc. To evaluate internal consistency, intraobserver and interobserver agreement, and intraobserver and interobserver reliability, we used respectively the Cronbach’s α coefficient, kappa concordance and intraclass correlation (ICC). The correlation between HAMIS-Br and mHAMIS-Br was evaluated and a factorial analysis was performed.

Results

HAMIS-Br showed excellent internal consistency (Cronbach’s α = 0.997), good intraobserver agreement (kappa between 0.78 [95%CI =0.57–0.99] and 1) and intraobserver and interobserver reliability (ICC = 0.993, 95% CI = 0.973–0.993 and ICC = 0.994, 95% CI = 0.987–0.997, respectively). The mHAMIS-Br presented similar results and excellent correlation with HAMIS-Br (r = 0.923). The factorial analysis extracted three groups of questions that explain 84.4% of the total variance, and that can be understood through the influence of certain movements in the interpretation of others: [1] questions whose interpretation is influenced by the extension of the fingers, [2] questions whose interpretation is influenced by flexion of the fingers, [3] volar flexion of the fingers, with similar correlation with both other factors.

Conclusions

HAMIS-Br and mHAMIS-Br showed good agreement, intraobserver and interobserver reliability, and internal validity. It is necessary to be attentive to the influence of certain limitations of movements in the interpretation of others.
Neuro-Sweet syndrome - a rare differential diagnosis in aseptic meningoencephalitis
Authors: Hoffmann Elgin , Boßelmann Christian , Forchhammer Stephan , Lerche Holger , Freilinger Tobias
Published: November 2019

Acute febrile neutrophilic dermatosis (Sweet‘s syndrome) is a dermatological entity, which may be associated with malignancies, drugs, and infections and which is characterized by high fever, elevated neutrophils, and tender erythematous skin lesions. Involvement of the nervous system – Neuro-Sweet syndrome (NSS) - is rare, manifesting most commonly with an encephalitic syndrome in addition to fever and dermal lesions. Here, we report an unusual case of NSS in a Caucasian male patient in the setting of B-cell-lymphocytosis, with encephalitis preceding dermal lesions. Symptoms resolved completely in response to corticoids.

NSS is a rare, but important differential diagnosis in the work-up of febrile aseptic meningoencephalitis unresponsive to anti-infectious treatment. Due to its rarity and clinical variability, diagnosis of NSS might be challenging. Knowledge of this entity may facilitate proper diagnosis and differentiation from conditions with similar clinical presentation, especially Neuro-Behçet‘s disease. It may further lead to early detection of a potentially underlying malignancy and help in initiating adequate therapy.
Adaptive deep learning for head and neck cancer detection using hyperspectral imaging
Authors: Ma Ling , Lu Guolan , Wang Dongsheng , Qin Xulei , Chen Zhuo Georgia , Fei Baowei
Published: November 2019

It can be challenging to detect tumor margins during surgery for complete resection. The purpose of this work is to develop a novel learning method that learns the difference between the tumor and benign tissue adaptively for cancer detection on hyperspectral images in an animal model. Specifically, an auto-encoder network is trained based on the wavelength bands on hyperspectral images to extract the deep information to create a pixel-wise prediction of cancerous and benign pixel. According to the output hypothesis of each pixel, the misclassified pixels would be reclassified in the right prediction direction based on their adaptive weights. The auto-encoder network is again trained based on these updated pixels. The learner can adaptively improve the ability to identify the cancer and benign tissue by focusing on the misclassified pixels, and thus can improve the detection performance. The adaptive deep learning method highlighting the tumor region proved to be accurate in detecting the tumor boundary on hyperspectral images and achieved a sensitivity of 92.32% and a specificity of 91.31% in our animal experiments. This adaptive learning method on hyperspectral imaging has the potential to provide a noninvasive tool for tumor detection, especially, for the tumor whose margin is indistinct and irregular.
Virus as Hermeneutic
Authors: Admussen Nick
Published: November 2019

This essay theorizes the potential uses and limitations of describing a text as “viral.” Literary texts are often described as viral when they serve as tools of self-expression for those who reproduce them: viral texts must therefore delete or suppress qualities that mark them as alien, and emphasize qualities that identify them with those who might repeat them. As they circulate, viruses span and connect social and intellectual lineages through rhizomatic motion, as described by Deleuze and Guattari. These concepts provide an occasion for a rereading of the contemporary circulation of the poetry of Gu Cheng 顾城, whose verse and biography have circulated widely and been intensively transformed in the past thirty years. The partial and mutated versions of his life and verse that circulate via film, television, print, calligraphy, and especially the Internet produce a shared fantasy of a “free” poet whose genius excludes him from social constraint, and who deserves and enjoys the limitless adoration of women. This fantasy is made circulable in part by suppressing the experience of his wife, Xie Ye 谢烨, whom he killed in 1993, a deletion whose marks are clearly visible in a historicized analysis of popular treatments of their story. On the strength of Deleuze and Guat-tari’s argument that the rhizome cannot be encompassed but instead only extended through rupture, the essay then reads Xie Ye’s prose compositions “Games” and “Your Name Is Little Mu’er,” finding them to contain stories that can travel and concepts whose circulation may contribute to antipatri-archal goals. The piece concludes by arguing that the metaphor of the virus reveals the position of the scholar who reproduces texts for study, and that thinking through the virus implicates scholars in the ethics and pragmatics of spreading texts.
Flight from the Womb
Authors: Carvalho Charmaine
Published: November 2019

Although chick lit, epitomized by novels such as Bridget Jones’s Diary, has been analyzed by feminist critics as an example of postfeminist culture, the transnational spread of the genre has resulted in transformations that invite fresh consideration. In the Indian context, chick lit emerged in the aftermath of economic liberalization, contributing to the configuration of a new feminine subjectivity—“the single woman in the city.” This article argues that the discourse of singleness in Indian chick lit is deployed not so much to solve the problem of singleness through marriage but to resolve the tension between the demands of “Indian tradition” on middle-class young women and their desire for a selfhood inflected by neoliberal discourses of autonomy. This dichotomy is symbolized in the novels in the tension between mothers and daughters and plays out primarily across the domains of choice of spouse, food, and dress. While tradition and modernity are conceptualized as binaries, the single women in these novels seem to be wrestling with a way of articulating a selfhood without having to pick a side. In their refusal to conform to ideas of Indian selfhood wherein individualism is circumscribed by autonomy, the “single woman” presents, if not ideally represents, the idea of synthesis.
“This Quiet Revolution”
Authors: Meyerhoff Eli
Published: November 2019

One of the most revolutionary movements in the history of US universities—the Third World students’ strike that shut down San Francisco (SF) State College for five months in 1968–69—had a key precursor in the Experimental College (EC), which supported student-organized courses, including the first Black studies courses, at SF State. The EC offers inspiration for creating infrastructures of radical imagination and study. The EC appropriated resources—including spaces, money, teachers, credits, and technologies—for studying within, against, and beyond the normal university. The EC facilitated courses with revolutionary content, and they fostered modes of study in these courses that were radically alternative to the education-based mode of study. Contributing my concept of “modes of study,” I offer guidance for revolutionary movements on the terrain of universities today. Through analysis of archival materials and interviews with organizers of the EC and Black Student Union, I found that the EC organizers’ potentials for supporting revolutionary study were limited by their romanticizing of education, which was coconstituted with subscriptions to modernist imaginaries. Rejecting the education-based mode of study as bound up with liberal-capitalist modernity/coloniality, organizers today can appropriate their universities’ resources for alternative modes of study and world-making.
The Dialectic of Sex, after the Post-1960s
Authors: Lane-McKinley Madeline
Published: November 2019

A key artifact of the political contradictions and utopian problematics of women’s liberation and the tradition of radical feminism at the end of the 1960s, Shulamith Firestone’s Dialectic of Sex remains a site of controversies, misinterpretations, and unmet challenges. This essay considers the critical capacity of this text at the present juncture, strongly characterized by the reactionary resurgence of second-wave feminism and a trans-exclusionary brand of radical feminism. While both illuminating and symptomatizing many of the contradictions and failures of radical feminism, Firestone’s text also strongly resonates with the critical utopian interventions of queer-feminist science fiction writing in the early 1970s. This critique of The Dialectic of Sex seeks to rearticulate some of Firestone’s key concepts within a critical utopian framework and to reconceptualize the text’s contributions to radical feminism in relation to a contemporary project of revolutionary feminism. To do this, the author suggests, requires a more nuanced approach to historicizing and engaging with political confusion—marking a matter of great urgency for the current cultural landscape.
Impaired neural differentiation and glymphatic CSF flow in the Ccdc39 rat model of neonatal hydrocephalus: genetic interaction with L1cam
Authors: Emmert A. Scott , Iwasawa Eri , Shula Crystal , Schultz Preston , Lindquist Diana , Dunn R. Scott , Fugate Elizabeth M. , Hu Yueh-Chiang , Mangano Francesco T. , Goto June
Published: November 2019

Neonatal hydrocephalus affects about one child per 1000 births and is a major congenital brain abnormality. We previously discovered a gene mutation within the coiled-coil domain-containing 39 (Ccdc39) gene, which causes the progressive hydrocephalus (prh) phenotype in mice due to lack of ependymal-cilia-mediated cerebrospinal fluid (CSF) flow. In this study, we used CRISPR/Cas9 to introduce the Ccdc39 gene mutation into rats, which are more suitable for imaging and surgical experiments. The Ccdc39prh/prh mutants exhibited mild ventriculomegaly at postnatal day (P)5 that progressed into severe hydrocephalus by P11 (P<0.001). After P11, macrophage and neutrophil invasion along with subarachnoid hemorrhage were observed in mutant brains showing reduced neurofilament density, hypomyelination and increased cell death signals compared with wild-type brains. Significantly more macrophages entered the brain parenchyma at P5 before hemorrhaging was noted and increased expression of a pro-inflammatory factor (monocyte chemoattractant protein-1) was found in the cortical neural and endothelial cells in the mutant brains at P11. Glymphatic-mediated CSF circulation was progressively impaired along the middle cerebral artery from P11 as mutants developed severe hydrocephalus (P<0.001). In addition, Ccdc39prh/prh mutants with L1 cell adhesion molecule (L1cam) gene mutation, which causes X-linked human congenital hydrocephalus, showed an accelerated early hydrocephalus phenotype (P<0.05-0.01). Our findings in Ccdc39prh/prh mutant rats demonstrate a possible causal role of neuroinflammation in neonatal hydrocephalus development, which involves impaired cortical development and glymphatic CSF flow. Improved understanding of inflammatory responses and the glymphatic system in neonatal hydrocephalus could lead to new therapeutic strategies for this condition.

This article has an associated First Person interview with the joint first authors of the paper.
Improving the design of studies evaluating the impact of diagnostic tests for tuberculosis on health outcomes: a qualitative study of perspectives of diverse stakeholders
Authors: Ochodo Eleanor A. , Naidoo Selvan , Schumacher Samuel , Steingart Karen , Deeks Jon , Cobelens Frank , Bossuyt Patrick M. , Young Taryn , Nicol Mark P.
Published: November 2019

Background: Studies evaluating the impact of Xpert MTB/RIF testing for tuberculosis (TB) have demonstrated varied effects on health outcomes with many studies showing inconclusive results. We explored perceptions among diverse stakeholders about studies evaluating the impact of TB diagnostic tests, and identified suggestions for improving these studies.

Methods: We used purposive sampling with consideration for differing expertise and geographical balance and conducted in depth semi-structured interviews. We interviewed English-speaking participants, including TB patients, and others involved in research, care or decision-making about TB diagnostics. We used the thematic approach to code and analyse the interview transcripts.

Results: We interviewed 31 participants. Our study showed that stakeholders had different expectations with regard to test impact and how it is measured. TB test impact studies were perceived to be important for supporting implementation of tests but there were concerns about the unrealistic expectations placed on tests to improve outcomes in health systems with many influencing factors. To improve TB test impact studies, respondents suggested conducting health system assessments prior to the study; developing clear guidance on the study methodology and interpretation; improving study design by describing questions and interventions that consider the influences of the health-care ecosystem on the diagnostic test; selecting the target population at the health-care level most likely to benefit from the test; setting realistic targets for effect sizes in the sample size calculations; and interpreting study results carefully and avoiding categorisation and interpretation of results based on statistical significance alone. Researchers should involve multiple stakeholders in the design of studies. Advocating for more funding to support robust studies is essential.

Conclusion: TB test impact studies were perceived to be important to support implementation of tests but there were concerns about their complexity. Process evaluations of their health system context and guidance for their design and interpretation are recommended.
Express Assessment of Coal Quality using Domestic X-ray Spectral Analyzer
Authors: Кудряшов Владимир , Kudryashov Vladimir , Мороз Андрей , Moroz Andrey , Серебряков Александр , Serebryakov Aleksandr , Машовец Юрий , Mashovets Yury
Published: November 2019

At-line coal quality analyzer using the method of Energy Dispersive X-ray Fluorescence analysis is described. The analysis time of one sample does not exceed 5 minutes. The analysis errors are determined and the limitations of the approach are considered.
OPTIMIZATION OF CEMENT TYPE SELECTION PROCESS FOR PRODUCTS IN AGGRESSIVE ENVIRONMENTS
Authors: Рахимбаев Шарк , Rahimbaev Shark , Толыпина Наталья , Tolypina Natalya , Хахалева Елена , Khakhaleva Elena , Толыпин Д.А. , Tolypin D.A.
Published: November 2019

Currently, in industrialized countries in order to prevent corrosion of the hydration-hardened building products a tendency to use methods reducing the permeability of concrete to aggressive agents of the environment is applied. The authors believe that to protect concrete and reinforced concrete against corrosion, it is necessary to use all available means at the disposal of specialists, the most important of which is the correct choice of cement. Increasing corrosion resistance by reducing the water-cement ratio of the concrete mixture is a universal way, but not always it can ensure preserving the performance properties of concrete products and structures in aggressive environments for their entire service life. In this regard, recommendations for choosing the type of cement for the most frequently encountered aggressive environments are given. The analysis of literature sources shows that in many cases it is advisable to use cement with active mineral admixtures.
RESEARCH OF THE SWELLING KINETICS OF PINE WOOD, MODIFIED WITH AMINO-BORATES
Authors: Котлярова Ирина , Kotlyarova Irina , Степина Ирина , Stepina Irina
Published: November 2019

Wood swells at the contact with capillary and liquid water. This process leads to premature destruction of wood material due to the decrease in its strength characteristics. It is possible to reduce wood swelling in various ways: deep impregnation by hydrophobic reagents, covering the surface with paints and varnishes etc. However, in this case the texture of wood is masked and its unique properties are lost. When modifying wood with amino-borates the supramolecular structure of cellulose is ordered, the specific surface of wood decreases, and its water sorption capacity is reduced. In this regard, we have researched the influence of boron-nitrogenous modifiers of various concentrations on pine wood swelling. The swelling ability of the modified wood was estimated by weight method. As a control sample the samples of unmodified wood were used. On the basis of the obtained experimental data the differential curves of swelling were built and the velocity constants of swelling were determined by a graphic method. As a result of the research it has been established that modifying wood with amino-borates leads to the decrease of equilibrium extent of swelling, and the velocity constant of swelling depends on the nature and concentration of the modifier and its influence on the microstructure of a wood composite.
Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships
Authors: Hüther Niklas , Robinson David T. , Sievers Sönke , Hartmann-Wendels Thomas
Published: November 2019

We offer the first empirical analysis connecting the timing of general partner (GP) compensation to private equity fund performance. Using detailed information on limited partnership agreements between private equity limited and general partners, we find that “GP-friendly” contracts—agreements that pay general partners on a deal-by-deal basis instead of withholding carried interest until a benchmark return has been earned—are associated with higher returns, both gross and net of fees. This is robust to measures of performance persistence, time period effects, and other contract terms and is related to exit-timing incentives. Timing practices balance GP incentives against limited partner downside protection.

This paper was accepted by Gustavo Manso, finance.
A New Species of Cryptopone Emery (Hymenoptera: Formicidae: Ponerinae) from Brazil with Observations of this Genus and a Key for New World Species
Authors: Fernandes Itanna Oliveira , Delabie Jacques Hubert Charles
Published: November 2019

The monophyly of Ponerinae was strongly supported by a detailed molecular phylogenetic study. Within the subfamily, substantial changes were yet done to the taxonomy of several genera, such as Cryptopone Emery, and after phylogenetic and morphological considerations, the genus Cryptopone was revived. Cryptopone is a moderately large genus of pantropical distribution, with 25 described species and subspecies, with its diversity centered mostly in East and Southeast Asia. In the New World, only four species were known until now, Cryptopone gilva (Roger), Cryptopone guianensis (Weber), Cryptopone holmgreni (Wheeler) and Cryptopone mirabilis (Mackay & Mackay). Since the Mackay and Mackay’s revision of 2010 of the genus Pachycondyla which included the species currently attributed to Cryptopone, no new species was added to Cryptopone genus in the New World. Recently an unidentified Cryptopone species was collected in the state of Rondônia, Brazil. The material here described was sampled by manual collection of soil in the Floresta Nacional do Jamari (FLONA Jamari). Four individuals belonging to the worker caste are hereafter described under the name of Cryptopone pauli sp. nov. Currently this ant is known only to a single locality in the state of Rondônia, Brazil. This is also the first record of this genus for that state. We present new records of Cryptopone for the Neotropical Region with some comments on its biology and an updated key to workers of the five species of Cryptopone currently known in the New World.
Colony Breeding Structure of Reticulitermes (Isoptera: Rhinotermitidae) in Northwest Arkansas
Authors: Janowiecki Mark Allan , Tripodi Amber D , Vargo Edward L , Szalanski Allen L
Published: November 2019

Termites, as social insects, have a complicated life cycle in which the colony breeding structure, that is the number of and origin of reproductives in a colony, can vary in relation to age and environmental factors. In this study, we used genetic methods to characterize the breeding structure of three species of Reticulitermes from three sites in northwest Arkansas and compared two habitats: undeveloped, forested sites and developed, agricultural sites. We found 57.1% of R. flavipes (Kollar) in northwest Arkansas (n = 28) were simple families, 39.3% were extended families and 3.6% were mixed families. Similarly, for R. hageni Banks (n = 23), we found 58.3% simple families, 33.3% extended families, and 8.3% mixed families. All of the R. virginicus (Banks) samples (n = 5) were simple families. For R. flavipes and R. hageni, the percentage of extended families is intermediate to southeastern and northern USA populations, corresponding to the intermediate seasonality and climate in Arkansas. The level of inbreeding in Arkansas, estimated via FIT, was relatively high and similar to northern populations of Reticulitermes. There were significantly more extended family colonies at the developed site compared to the two undeveloped sites which contained more simple family colonies. This difference may occur as a strategy to cope with sparse resources in urban environments or as a consequence of different abiotic factors.
Ellipsometric modeling of serially bi-deposited glancing-angle-deposition coatings
Authors: Smith C. , MacNally S. , Oliver J. B.
Published: November 2019

Ellipsometric modeling of serially bi-deposited glancing-angle-deposition (GLAD) coatings with a high degree of accuracy is imperative for multilayer coatings. High-precision dispersion curves are demonstrated for a wide variety of applications.
The archaeology of in-between places: Finds under the Ilissos River bridge in Athens
Authors: Lekakis Stelios
Published: November 2019

The ongoing recession has provided new layers in the tangible and intangible palimpsests in the city of Athens, especially in its neglected urban pockets that can be central but always outside the city’s normal, social life. This article arises from my experience of participating in a cleaning activity under the Anapafseos Street Bridge over the encased Ilissos River in central Athens in September 2010. In it I challenge the official rhetoric regarding the use of marginal sites for parasitic activities, by re-appropriating urban waste into empirical evidence and attempting to read through the lines of the graffiti left behind by a community of migrants that used the bridge as a temporary camp site. By providing an alternative reading of the bridge as an in-between place, this article seeks to problematize the assimilation of hidden communities in the city. It can also be considered as a gesture of contemporary-urban archaeology, a way to both approach and understand these communities in a form of a publicly engaged and politically relevant archaeological practice.
Impossible is nothing (unless otherwise stated): Balancing between memory and art in Parko Eleftherias and the Polytechneio
Authors: Moudopoulos Athanasiou Faidon , Giannakis Dimitris
Published: November 2019

This article explores Parko Eleftherias (‘Liberty Park’) and Athens Polytechnic (Polytechneio), two historical places linked with the period of the Greek military Junta (1967–74), and their position in the urban life of contemporary Athens. Focus is placed on the limits of artistic expression tolerated in those two historical places, examining different attitudes towards them. We discuss the so-called public programmes organized in the framework of documenta 14 (d14) in Parko Eleftherias, aiming to an extent to bring the dark heritage of the EAT-ESA (Eidiko Anakritiko Tmima – Elliniki Stratiotiki Astynomia = Special Interrogation Centre – Greek Military Police) into light. In the second part, we contrast that case, where all performances were conducted freely and under legal permission, with the 2015 Polytechneio graffiti incident, when artists covered overnight the southwestern façade of the neoclassical building with a gigantic oeuvre of street art that was removed by the authorities, given the illegal nature of the action. This contrast reveals the dynamic relationship between art narratives and attitudes towards monuments, which have followed different pathways of development after the Junta regime ended.
Comprehensive assessment of the pharmacokinetic properties of a single bolus dose of colecalciferol in terms of efficacy and safety
Authors: Suplotova Liudmila A. , Avdeeva Valeria A. , Pigarova Ekaterina A. , Rozhinskaya Liudmila Y.
Published: November 2019

Background: The lack of a unified approach to the treatment of deficiency and vitamin D deficiency stimulated a detailed study of the dynamics of indicators of phosphorus-calcium metabolism, parathyroid hormone, 25(OH)D (calcidiol).
Aim: To evaluate the pharmacokinetic properties of colecalciferol at a dosage of 150 000 IU, from the standpoint of its efficacy and safety in clinical practice.
Materials and methods: Observational, single-center, prospective, selective, uncontrolled study of a comprehensive assessment of the pharmacokinetic properties of a single saturating dose of 150 000 IU of colecalciferol. To assess the pharmacokinetic properties of colecalciferol at a dosage of 150 000 IU, we set efficacy and safety criteria. The criterion for the effectiveness of treatment was to achieve an adequate level of vitamin D (more than 30 ng / ml at the initial insufficient level and more than 20 ng / ml for patients with vitamin D deficiency). The safety criteria for the correction of vitamin D deficiency or deficiency were the absence of patient complaints, adverse events and / or serious adverse events, as well as the preservation of the main laboratory parameters of phosphorus-calcium metabolism within the reference values.
Results: When studying the efficacy of a dose of 150 000 IU in patients with vitamin D deficiency and insufficiency, it was found that the level of calcidiol was significantly higher in the group after treatment with colecalciferol compared with the group before treatment (p 0.05). The peak of the maximum value for patients with deficiency was established on the 14 day from the moment of administration of colecalciferol and was 37.1 6.28 ng / ml, and for patients with initial vitamin D deficiency 40.1 3.71 ng / ml. In the study of the safety of colecalciferol in a bolus dose of 150 000 IU, there were no statistically significant differences in the laboratory parameters of calcium-phosphorus metabolism, both in the group before treatment and after correction of deficiency and vitamin D insufficiency in both groups.
Conclusion: Colecalciferol in the form of a single bolus dose of 150 000 IU demonstrated its efficacy and safety in real clinical practice.
Tensiones geográficas: controversias y conflictos ambientales en Argentina
Authors: Reboratti Carlos
Published: November 2019

Mediante tres ejemplos de conflictos socioambientales ubicados en diferentes lugares de Argentina, que han tenido desarrollos distintos, se busca demostrar la manera en que su análisis gana en riqueza y profundidad si se hace uso, de manera explícita, de dos conceptos propios de la geografía: escala y territorio. En los tres, los ámbitos territoriales definidos marcaron el grado y el tipo de desarrollo de los actores, así como las acciones emprendidas, desde un conflicto que comenzó en el ámbito local y luego se extendió hasta el internacional (aunque sin perder su origen), como el que se generó a partir de la instalación de una fábrica de pasta de celulosa sobre el río Uruguay, hasta el actual conflicto por la instalación de empresas de fracking en el norte de la Patagonia, en una gran extensión semidesértica pero bordeada por valles de riego densamente poblados, pasando por el fenómeno de la rápida extensión de la soja desde el centro hacia el norte del país y su muy disputado uso masivo de agroquímicos. El tamaño de los territorios y la escala de los actores y las acciones juegan un papel fundamental para poder comprender la compleja trama de estos conflictos.
Plazas mayores y alamedas de México, una reflexión desde la geografía histórica
Authors: Ribera Carbó Eulalia
Published: November 2019

Desde la óptica de la trayectoria académica de la autora en la especialidad de geografía histórica se hace una reflexión en torno a la importancia de una perspectiva temporal suficientemente larga para el análisis, la comprensión y la intervención atinada de los espacios contemporáneos. Con el ejemplo de los estudios interdisciplinarios y en equipo acerca de la historia y la geografía de las plazas mayores y alamedas de México, se cavila en la relevancia de estos pequeños y significativos lugares de la morfología urbana mexicana, en un momento en que la defensa y el cuidado de los espacios públicos como patrimonio colectivo parece imprescindible para la construcción de ciudades más equitativas.
Representaciones cartográficas de la turistificación de la península de Yucatán a medio siglo de la creación de Cancún
Authors: García de Fuentes Ana
Published: November 2019

A casi medio siglo de la creación de Cancún, consideramos importante analizar los impactos territoriales del proceso de turistificación de la península de Yucatán; utilizamos como herramienta la cartografía temática con el fin de expresar, de manera sintética, ejemplos de los complejos procesos de organización y reorganización de la vida social, económica, política, cultural y ambiental vinculados al turismo como elemento rector de la acumulación de capital en gran parte de este enorme territorio
Gêneros orais do contexto acadêmico no ensino de português como língua adicional:
Authors: Vianini Carolina , De Lima Hiago Higor
Published: November 2019

O artigo relata o processo de desenvolvimento de material didático para o ensino específico de português como língua adicional (PLA), tendo como aporte a proposta pedagógica de implementação de gêneros em sala de aula de língua inglesa para fins específicos (RAMOS, 2004). Seguindo, ainda, a dinâmica sugerida por Silva; Leurquin (2014) de elaboração de material didático, desenvolveu-se uma unidade didática em torno do gênero apresentação oral, utilizada com alunos estrangeiros intercambistas inscritos em cursos do Idiomas Sem Fronteiras – Português (IsF-Português) da Universidade Federal de São João del-Rei - MG. Considerando-se a importância e a carência do trabalho com gêneros orais em sala de aula de línguas estrangeiras, busca-se refletir sobre as implicações do desenvolvimento de material com fins específicos para o processo de ensino-aprendizagem de PLA no contexto universitário, bem como para a formação inicial do professor.
Experiência Finlandesa na Formação de um Professor
Authors: Martins Christian Alves
Published: November 2019

Este artigo descreve o corolário de uma formação docente continuada sob a perspectiva de um professor do Ensino Básico motivado por uma parceria investigativa, interinstitucional e internacional entre o Colégio de Aplicação da Universidade Federal de Uberlândia (CAp/UFU) e a Escola de Educação da Universidade de Tampere, na Finlândia. Refutando modelos de referência a serem reproduzidos acriticamente, propomo-nos, neste texto, a refletir acerca da concepção colaborativa de trabalho, levando em consideração as distintas especificidades de cada realidade, proporcionando a significação de sujeitos e de práticas pedagógicas.
Apresentação
Authors: Paes Leme Carrijo Abrahão Ana Maria , Paes Leme Giffoni Cilião Torres Ana Cristina
Published: November 2019

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