bluuebunny/crossref_metadata_2025 huggingface dataset:
Robustness of full revelation in multisender cheap talk
Authors: Meyer Margaret , Moreno de Barreda Inés , Nafziger Julia
Published: November 2019

This paper studies information transmission in a two‐sender, multidimensional cheap talk setting where there are exogenous constraints on the (convex) feasible set of policies for the receiver, and where the receiver is uncertain about both the directions and the magnitudes of the senders' bias vectors. With the supports of the biases represented by cones, we prove that whenever there exists an equilibrium that fully reveals the state, there exists a robust fully revealing equilibrium (FRE), i.e., one in which small deviations result in only small punishments. We provide a geometric condition—the local deterrence condition—that relates the cones of the biases to the frontier of the policy space, which is necessary and sufficient for the existence of a FRE. We also construct a specific policy rule for the receiver—the min rule—that supports a robust FRE whenever one exists.
Gridlock and inefficient policy instruments
Authors: Austen-Smith David , Dziuda Wioletta , Harstad Bård , Loeper Antoine
Published: November 2019

Why do rational politicians choose inefficient policy instruments? Environmental regulation, for example, often takes the form of technology standards and quotas even when cost‐effective Pigou taxes are available. To shed light on this puzzle, we present a stochastic game with multiple legislative veto players and show that inefficient policy instruments are politically easier to repeal than efficient instruments. Anticipating this, heterogeneous legislators agree more readily on an inefficient policy instrument. We describe when inefficient instruments are likely to be chosen, and predict that they are used more frequently in (moderately) polarized political environments and in volatile economic environments. We show conditions under which players strictly benefit from the availability of the inefficient instrument.
Science Education and Mobile Learning: A Content Analysis Review of the Web of Science Database
Authors: Odabasi Metin Berk , Uzunboylu Huseyin , Popova Olga V. , Kosarenko Nikolay N. , Ishmuradova Izida I.
Published: November 2019

The use of mobile technologies in education has appealed considerable interest and attention from educators and researchers in the last decade. Nonetheless, the effects of mobile learning on students’ learning outcome in science education are still ambiguous. The time and place flexibility, ubiquity and easy accessibility of mobile devices are among the features that make them valuable in m-learning, especially in science education, at present times. Despite the large number of researches conducted, no bibliometrics study has been carried out in this topic so far. The aim of this review is to assess the progress of international publications in the area of science education and mobile learning. This content analysis review shows the trends in publications regarding mobile learning and science education researches indexed in Web of Science database between years 2004-2019. Out of 57 documents related to the topic of interest found in the database of Web of Science, the results demonstrate that the publication frequency has increased after 2012 where the most productive year was 2016. Most of the published documents were proceedings papers and original articles. Taiwan and United States are the countries with most work published where Pakistan, Taiwan and China are the countries that funded the most scientific research. The top journal involving the publications associated with this topic is Computers & Education journal. A more comprehensive criteria has been used in this content analysis which has interpreted in detail. This study can provide a much clear picture of the field to researchers, educational leaders and funders to incorporate new understandings into their research.
Identifying Students’ Attitudes Regarding Augmented Reality Applications in Science Classes
Authors: Karagozlu Damla , Kosarenko Nikolay N. , Efimova Olga V. , Zubov Vadim V.
Published: November 2019

As one of the developing technologies and increased use in the field of ed-ucation, Augmented Reality (AR) technology adds a digital (audio, video, graphic and GPS location) layer to authentic world images. The aim of this study is to determine students’ attitudes regarding AR contents developed for science education. The study group consists of 77 7th grade students studying in a private college during 2018-2019 academic year spring se-mester. The study adopted quantitative data collection method and imple-mented Attitude Scale for Augmented Reality Applications. The collected data were analyzed through paired samples statistics, mean and standard deviation. The data analysis showed that students were satisfied with AR applications, found it interesting and easy to use and would like to use it in the future.
Le numérique en classe en 2 temps 3 mouvements – Évaluation d'un scénario de formation continuée
Authors: Delforge Carole , Meurice Alice , Vyver Julie Van de
Published: November 2019

Cet article fait état de la recherche menée par un groupe pluridisciplinaire sur un scénario de formation baptisé 2 temps 3 mouvements, à destination des enseignants en langues. Combinant une expertise multiple en acquisition des langues secondes, en numérique pédagogique, et en formation enseignante, trois chercheuses ont imaginé, mis en pratique, puis analysé un scénario de formation continuée. En se basant sur plusieurs théories d'intégration du numérique en classe et sur une série de données qualitatives récoltées tout au long de la formation, l'équipe de recherche a pu mettre en exergue différents aspects. Dans un premier temps, l'effet du scénario sur les représentations des participants quant au numérique à l'école a été analysé. Ensuite, l'attention a été portée sur l'évolution des pratiques numériques des enseignants à l'issue de la formation. Enfin, le scénario de formation en lui-même et son efficacité ont été investigués. Les différents résultats exposés ont permis aux chercheuses de formuler des recommandations de bonnes pratiques dans la perspective d'une nouvelle édition de formation en 2 temps 3 mouvements.
Jean-Joseph Rabearivelo et l’intime
Authors: Riffard Claire
Published: November 2019

Dans cet article, je propose d’observer comment l’analyse des manuscrits de Jean-Joseph Rabearivelo permet de réévaluer son image, en donnant accès à une dimension intime demeurée secrète jusqu’alors. Je dresserai d’abord un rapide aperçu des représentations de l’écrivain, à son époque et jusqu’à aujourd’hui, pour insister ensuite sur le changement de perspective occasionné par l’accès aux traces matérielles de la création et donner finalement quelques éléments sur la nouvelle mutation du regard permise par la mise au jour d’abondantes archives photographiques.
La « matière Zongo » et ses prolongements dans les écritures dramatiques contemporaines à Ouagadougou
Authors: Desgranges Aurore
Published: November 2019

Le fort retentissement de « L’affaire Zongo » peut se mesurer, au Burkina Faso, à l’aune du phénomène intense de relecture de sa production intellectuelle et de sacralisation de sa parole. Via une dissémination ordinaire (conversations quotidiennes, consommation de produits dérivés) comme artistique (œuvres-hommages, organisation d’événements culturels), une « matière » s’est formée autour de ses écrits, de ses interventions orales et de son combat politique, et se réécrit de manière collective notamment par le biais du support dramatique.
Hétérogénéité des niveaux et rythmes des élèves : dilemmes d’enseignants du primaire en formation et titulaires dans deux contextes
Authors: Wanlin Philippe , Dessart Pascale , Crahay Marcel
Published: November 2019

Ce texte étudie les représentations des enseignants sur les dilemmes inhérents à la gestion de l’hétérogénéité de niveaux des élèves. Plus de 900 enseignants ont participé à deux études quantitatives. La première montre la pertinence de l’instrument de mesure avec des enseignants belges francophones, population au sein de laquelle nous avons extrait des propos transformés en items. La deuxième vérifie si cet instrument a le même pouvoir d’identification des dilemmes selon le statut (en formation ou titularisé) et le pays (Suisse ou Belgique) des répondants. Les résultats montrent une certaine stabilité dans les dilemmes avec un pouvoir psychométrique différent en fonction du statut ou de pays des sondés. Des recommandations pour de futures recherches et des observations pour la formation des enseignants sont discutées.
IMAF
Authors: Zhou Zhengshu , Zhi Qiang , Morisaki Shuji , Yamamoto Shuichiro
Published: November 2019

Information technology has been used as a solution for improving productivity and service quality by enterprises, and software systematization supported by information technology has increasingly become the foundation for enterprise service. Innovation towards enterprise architecture improvement is usually necessary to provide high-quality service and create new value. This paper proposes a methodology aiming at stimulating innovation by evaluating the value provided by software system while visualizing the enterprise architectures. In this paper, the constituents of traditional business modeling methods are analyzed and integrated. Next, an innovation methodology based on ArchiMate framework is described and the detailed steps are defined. To evaluate the effectiveness of this proposed method, a case study on a Japanese convenience store information system is conducted and a controlled experiment is carried out.
An Efficient Multi-Objective Model for Data Replication in Cloud Computing Environment
Authors: Sasikumar K. , Vijayakumar B.
Published: November 2019

The main aim of the proposed methodology is to design a multi-objective function for replica management system using oppositional gravitational search algorithm (OGSA), in which we analyze the various factors influencing replication decisions such as mean service time, mean file availability, energy consumption, load variance, and mean access latency. The OGSA algorithm is hybridization of oppositional-based learning (OBL) and gravitational search algorithm (GSA), which is change existing solution, and to adopt a new good solution based on objective function. Here, firstly we create a set of files and data node to generate a population by assigning the file to data node randomly and evaluate the fitness which is minimizing the objective function. Secondly, we regenerate the population to produce optimal or suboptimal population using OGSA. The experimental results show that the performance of the proposed methods is better than the other methods of data replication problem.
An Event-Based Neural Network Architecture with Content Addressable Memory
Authors: Sivaganesan S  , Maria Antony S  , Udayakumar E
Published: November 2019

A hybrid analog/digital very large-scale integration (VLSI) implementation of a spiking neural network with programmable synaptic weights was designed. The synaptic weight values are stored in an asynchronous module, which is interfaced to a fast current-mode event-driven DAC for producing synaptic currents with the appropriate amplitude values. It acts as a transceiver, receiving asynchronous events for input, performing neural computations with hybrid analog/digital circuits on the input spikes, and eventually producing digital asynchronous events in output. Input, output, and synaptic weight values are transmitted to/from the chip using a common communication protocol based on the address event representation (AER). Using this representation, it is possible to interface the device to a workstation or a microcontroller and explore the effect of different types of spike-timing dependent plasticity (STDP) learning algorithms for updating the synaptic weights values in the CAM module.
Optimal Power Management System in Embedded Devices by using Novel Scheduling Algorithm
Authors: Shanthaveeraiah Harsha S. , Balasubramani R.
Published: November 2019

Recently, Android is being integrated and applied to various embedded systems because of good characteristics like open source, a wide connective range, multitasking, and secure communications. Most of the modern embedded designers have been focused on system performance while reducing operating power consumption. However, increasing the performance level inevitably increases power consumption. In this article, an optimal power management (OPM) system is proposed for embedded systems using a novel scheduling algorithm. It can control the operating power consumption of open source platforms (Raspberry-PI, Parallella, and Arduino) supported hardware devices (ZynqBerry, ZynqParallela, and ArduZynq). The proposed OPM system uses the scheduling algorithm based on the functionality of optimization and their tasks. Moreover, the proposed OPM system provides the low or high frequency to the devices upon receiving the low frequency and high frequency request from the devices. The simulation result is calculated in terms power consumption, maximum operating frequency and hardware utilization.
Improving Performance of Bell Labs Layered Space-Time Systems by Multiframe Space-Time Interleavers
Authors: Msallam Majdi , Wainakh Mohiedin
Published: November 2019

Turbo-BLAST (T-BLAST) is a multiple-input multiple-output (MIMO) wireless communication system. It is based on three main concepts: Bell laboratories layered space-time (BLAST) architecture, random space-time interleaving, and the turbo principle. T-BLAST system has many advantages including high data rate, excellent performance, and low complexity. These advantages make T-BLAST one the most important choices for future wireless communication systems. In this article, the authors study the effect of the space-time interleaver on the performance of T-BLAST system. This interleaver is split into two separated stages, time interleaving followed by space interleaving. They show that, in a quasi-static channel, the enhancement in performance provided by the time interleavers is very small compared to the gain provided by space interleavers. They also propose a new technique to improve the system performance, called multiframe space-time interleaving (MUSTI). Simulation results show an improvement in performance up to 6 dB at BER=10-4 for a (2,2) configuration.
Teacher Educators' Appropriation of TPACK-SAMR Models for 21st Century Pre-Service Teacher Preparation
Authors: Tunjera Nyarai , Chigona Agnes
Published: November 2019

The study examined how teacher educators are appropriating technological, pedagogical, and content knowledge (TPACK) and substitution, augmentation, modification, redefinition (SAMR) frameworks in their pre-service teacher preparation programmes. To ensure rigor, quality, and preparedness of pre-service teachers, there is a need to articulate expectations around effective use of these frameworks together with contemporary teaching and learning theories at the pre-service teacher preparation level. One-on-one in-depth interviews and participant observations were conducted with eight (8) teacher educators. The findings revealed that teacher educators are appropriating technology in ways harmonious with their prevalent traditional teacher-centred teaching strategies at enhancement levels. The researchers recommend the adoption of technology integration frameworks and teaching and learning theory at policy making levels in pre-service teacher training institutions.
Factors Determining the Continued Intention to Use Mobile Money Transfer Services (MMTS) Among University Students in Ghana
Authors: Mensah Isaac Kofi , Chuanyong Luo , Zeng Guohua
Published: November 2019

This study explored the factors influencing the continued intention to use mobile money transfer services among university students in Ghana. The UTAUT was used as the research theoretical framework while the analysis was conducted with SPSS and SmartPLS. The results demonstrate that the continued intention to use mobile money transfer services is influenced by performance expectancy, effort expectancy, social influence, facilitating conditions, and perceived service quality. Also, perceived service quality was found to be a significant predictor of the actual use of mobile money transfer services. The study further revealed that the continued intention to use was a positive determinant of the actual usage of mobile money transfer services. The implications of these and other findings of the study are discussed.
Big Data Ethics in Social Media-- A Case Study of Evaluating Websites
Authors: Niu Yueming , Yao Yulin
Published: November 2019

This article combines qualitative and quantitative analysis to study the ethical issues of Big Data in social media, especially in evaluating websites. First, this article discusses the Big Data ethics of evaluation websites, and finds that there are some problems in the evaluation websites, such as false information, hidden information, and lack of user information protection. Second, this article uses questionnaires to investigate the awareness of users of different genders and ages on the evaluation website and their personal information protection consciousness.
Sarcasm Detection for Workplace Stress Management
Authors: Shrawankar Urmila , Chandankhede Chaitali
Published: November 2019

Working stress is becoming very common. Handling working stress at the workplace is really going to be challenging. As a result, most of the time most of the time people start behaving in sarcastic ways through verbal communication, through different gestures, using emoticons, or writing reviews or comments that leads to increasing their anxiety sometimes promotes depression. It is difficult to identify sarcasm in written notes or communication. Feedback analysis is not a direct method since feedback or employer reviews are written in more formal language. This motivates the authors to work on the employee feedback system. The currently developed system helps to detect the sarcastic emotions by applying different methodologies on several types of statements. This will help corporations and other big organizations to identify reasons behind sarcastic behavior or increased anxiety. As a result, they can promote counseling programs, psychological treatment, or yoga-meditation camps.
IoT Big Data Security, Privacy and Challenges Related to Smart Grid
Authors: Kumari Kimmi , Mrunalini M.
Published: November 2019

The highly interconnected network of heterogeneous devices which enables all kinds of communications to take place in an efficient manner is referred to as “IOT.” In the current situation, the data are increasing day by day in size as well as in terms of complexities. These are the big data which are in huge demand in the industrial sectors. Various IT sectors are adopting big data present on IOT for the growth of their companies and fulfilling their requirements. But organizations are facing a lot of security issues and challenges while protecting their confidential data. IOT type systems require security while communications which is required currently by configuration levels of security algorithms, but these algorithms give more priority to functionalities of the applications over security. Smart grids have become one of the major subjects of discussions when the demands for IOT devices increases. The requirements arise related to the generation and transmission of electricity, consumption of electricity being monitored, etc. The system which is responsible to collect heterogeneous data are a complicated structure and some of its major subsystems which they require for smooth communications include log servers, smart meters, appliances which are intelligent, different sensors chosen based on their requirements, actuators with proper and efficient infrastructure. Security measures like collection, storage, manipulations and a massive amount of data retention are required as the system is highly diverse in its architecture and even the heterogeneous IOT devices are interacting with each other. In this article, security challenges and concerns of IOT big data associated with smart grid are discussed along with the new security enhancements for identification and authentications of things in IOT big data environments.
Ni-Doped ZnO Thin Films Deposited by Pneumatic Spray Pyrolysis
Authors: Herissi Labidi , Hadjeris L. , Aida M.S. , Azizi S. , Hafdallah A. , Ferdi A.
Published: November 2019

The objective of the present work is the study the Ni concentration effect on the optical, structural and electrical properties of ZnO:Ni thin films deposited by pneumatic spray pyrolysis method. Un-doped and Ni-doped ZnO thin films were prepared from zinc acetate dihydrate and nickel chloride hexahydrate dissolved in distilled water onto glass substrates by pneumatic spray pyrolysis method. Solution concentration, substrate temperature and nozzle-substrate distance were kept constant during all deposition processes. Effect of nickel content on the optical, structural and electrical properties of as-prepared films obtained was investigated by UV–Vis-NIR spectrophotometry, X-ray diffraction and four-point probe technique. The results indicate that the deposited films are well adherent to the substrates, present surface roughness and have a preferential growth in the (002) direction. The observed transmittance in the visible region was situated between 60% and 70%. For Ni-doped ZnO, there are two separate phases. The Urbach energy, grain size, and electrical conductivity increase with Ni content. The same behavior for both the optical energy gap and the ZnO:Ni lattice parameters.
Chrom/Nanocomposite ZrO2- Pillared Bentonite Catalyst for Castor Oil (Ricinus communis) Hydrocracking
Authors: Wijaya Karna , Syoufian Akhmad , Fitroturokhmah Ade , Trisunaryanti Wega , Adi Saputra Dita , Hasanudin
Published: November 2019

It has been carried out preparation of Chrom/Nanocomposite ZrO2-Pillared Bentonite catalyst with varying the amount of impregnating precursor at 0 to 3% (w/w). Material characterization of catalyst was carried out using X-ray Diffraction (XRD), X-ray Fluorescence (XRF), Infrared Spectroscopy (IR), Transmission Electron Microscope (TEM), Brunauer, Emmett, Teller (BET) and acidity measurement of ammonia-adsorption method. The results of research showed that pillarization was able to increase the basal spacing, surface area, diameter of pore and total volume of pore in catalyst, however increasing of impregnated Cr metal on bentonite caused the decreasing of basal spacing and surface area of catalyst but it would also caused the increasing amount of acid site. The experimental results showed that the catalyst could convert the castor oil into a liquid phase of 78.80% (w/w) with a biogasoline content of 32,73% (w/w).
Characterization of Epoxy-Nanoparticle Composites Exposed to Gamma & UV Radiation for Aerospace Applications
Authors: Torres Mauricio , Franco-Urquiza Edgar A. , González-García Pedro , Bárcena-Balderas Jorge , Piedra Saul , Madera-Santana Tomas , Melendrez-Amavizca Rodrigo , Quintana-Owen Patricia
Published: November 2019

The present work lies in the framework of designing polymeric fibre reinforced materials to be used in nanosatellite structures (CubeSat). In the design of any structural system for a space mission the balance between mass, stiffness and strength must be taken into account, also the used materials have to be appropriated for the space environmental conditions. The CubeSat are exposed to high radiation levels (because of the sun irradiance), and so, the accurate determination of the thermal and radiation properties are a key issue for the materials design used in such applications. This work reports the thermal and radiation performance of a biphasic epoxy resin system incorporating two types of ceramic nanoparticles: zinc oxide and graphene, chosen as potential fillers to improve the thermal properties of the epoxy system. Materials are exposed to Gamma and UV radiation at rates of 1 kGy and 10 kGy and characterized after exposure. Different characterization techniques (Thermogravimetric analysis - TGA, Scanning Electron Microscopy - SEM and Colorimetry) are performed to determine thermal properties and possible material degradation after radiation exposure. The influence of the different nanofiller in the thermal and radiation response of the epoxy system are discussed. Thermal properties found are also added to the Finite Element Analysis of a CubeSat composite structure to estimate more accurately its performance under the thermal load and service conditions during satellite life cycle.
Management of metastatic prostate cancer: recent advances, clinical perspectives and future prospects
Authors: Joseph N. , Choudhury A.
Published: November 2019

No abstract available
Xanthogranulomatous pyelonephritis
Authors: Prasanni W. D. D. , Malalasekera A. P.
Published: November 2019

No abstract available
Intraoperative and early postoperative complications of semi-rigid ureterorenoscopy: A prospective study
Authors: De Silva W. A. S. , Herath K. R. , Tennakoon T. M. H. , Balasooriya B. M. N. , Bandara G. R. B. C.
Published: November 2019

Objectives To analyze the intraoperative and early postoperative complications associated with uretero renoscopy (URS). Methods A prospective analysis of patients who underwent URS during a period of six months from June 2014 at the Department of Urology, Teaching Hospital, Kurunegala was carried out. Management of upper urinary tract disease with regards to its associated complications were evaluated. Early postoperative period was taken as the first week of ureterorenoscopy. Results A total of 150 patients had undergone URS. Nine patients had bilateral URS making the total number of (URS) renal units 159. Sixty eight percent of them were males and the mean age was 50 years with a range of 12 to 79 years. The main indication for URS was therapeutic intervention for ureteral calculi (85/150). Complications were graded according to the modified Clavien classification. Fifty nine complications occurred in 49 patients (59/150) with 36 intraoperative incidents (36/150=24%) and 23 early postoperative complications (23/150=15%). Majority of the complications were of Clavien Grade 1. Fifteen ureteral injuries have been encountered and all were managed with a Double J (DJ) stent. All early postoperative complications were accompanied by fever/UTI (23/59). Conclusion Common complications include ureteral injury and postoperative fever and or sepsis. Most of the ureteral injuries could be managed with Double J (DJ) stent simple placement. Fever or sepsis occurs despite antibiotic prophylaxis.
Penile carcinoma – case series from a tertiary referral centre
Authors: Mahesh S. P. V. , Gowribahan T. , Sasikumar S. , Karunadasa K. , Nandasena A. C. N.
Published: November 2019

No abstract available
Keratoacanthoma of the glans penis – a mimicry of penile cancer
Authors: Abeygunasekera A. M. , Ranatunga N. , Ishak M. C. M. , Wasalaarachchi K.
Published: November 2019

No abstract available
Incidence & management practices of snakebite
Authors: Gajbhiye Rahul , Khan Shagufta , Kokate Pratibha , Mashal Iranna , Kharat Sunita , Bodade Sanjay , Yadav Arun , Mahale Smita
Published: November 2019

This study was undertaken to know the incidence and management practices of snakebite envenomation at the First Referral Unit - Sub-District Hospital, Dahanu, Maharashtra, India. Retrospective analysis of snakebite case records (n=145) was carried out for one-year period (January to December 2014). The annual incidence of snakebite was 36 per 100,000 population with case fatality rate of 4.5 per cent. Venomous snakebites were 76 per cent and non-venomous snakebites were 24 per cent. Overall, snakebites were more common in males (52.4%) than females (47.6%). Majority of the snakebites (66%) were in the age group of 18-45 yr. Seasonal variation was observed with highest snakebites in monsoon (58%). Lower extremities were the most common site of bites (63%). Neurotoxic and vasculotoxic envenomation were reported in 19 and 27 per cent snakebite cases, respectively. Anti-snake venom (ASV) was administered at an average dose of 7.5±0.63 vials (range 2-40, median 6). There was no uniform protocol followed for ASV administration as per the National Snakebite Management Protocol of Government of India (2009).
Association between neutrophil-lymphocyte & platelet lymphocyte ratios with prognosis & mortality in rapidly progressive glomerulonephritis
Authors: Toraman Aysun , Neşe Nalan , Özyurt Beyhan Cengiz , Kürşat Seyhun
Published: November 2019

Background & objectives:

Rapidly progressive glomerulonephritis (RPGN) is a clinical syndrome manifested by features of nephritic syndrome and progressive loss of renal function over a short time. The objective of this study was to investigate the relationship between neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) and prognostic factors and pathological findings of renal biopsy in RPGN.

Methods:

Consecutive newly diagnosed RPGN patients who had follow up for at least six months were retrospectively analyzed. The estimated glomerular filtration rate (eGFR) was calculated. Albumin, C-reactive protein (CRP) levels and CRP/albumin ratio were also calculated.

Results:

Fifty four patients were included in the study. The mean age was 48.92±20.12 years. Clinicopathological diagnosis was pauci-immune glomerulonephritis (GN) in 40 while two had postinfectious GN, six systemic lupus erythematosus, three IgA nephropathy, two Henoch-Schönlein purpura and one membranoproliferative GN. The mean NLR was 7.02±6.34 and mean PLR was 273.90±39.15. Positive correlations between NLR and CRP levels (P=0.009, r=0.511) and CRP/albumin ratios (P=0.005, r=0.542) were observed. PLR and CRP/albumin ratios (P=0.041, r=0.412) were correlated positively. The per cent of fibrocellular crescents was negatively correlated with NLR (P=0.019, r=−0.291), and positively correlated with the lymphocyte count (P=0.05, r=0.256). In secondary crescentic subgroup, the per cent of fibrinoid necrosis had a positive correlation with PLR (P=0.013, r=0.642). Both NLR (P=0.036) and PLR (P=0.051) detected at the first month of the treatment period, were observed to be significantly correlated with mortality.

Interpretation & conclusions:

This study showed that NLR could predict mortality in patients with RPGN; correlated with systemic inflammation; showed a negative correlation with the per cent of fibrocellular crescents and could be regarded as a measure of glomerular inflammatory state. Moreover, PLR may be considered to be an indicator of disease severity in acute phase of crescentic GN.
Downregulation of apolipoprotein A-IV in plasma & impaired reverse cholesterol transport in individuals with recent acts of deliberate self-harm
Authors: Mathew Boby , Srinivasan Krishnamachari , Pradeep Johnson , Thomas Tinku , Murthy Shakuntala Kandikuppa , Mandal Amit Kumar
Published: November 2019

Background & objectives:

The major limiting factor in the prevention of suicide is the limited knowledge on molecular insights in individuals at risk. Identification of peripheral protein markers which can classify individuals at high-risk of suicide might aid in early diagnosis and effective medical intervention. The aim of the present study was, therefore, to analyze the differential regulation of plasma proteins in individuals with deliberate self-harm compared to controls.

Methods:

Using two-dimensional gel electrophoresis coupled with matrix-assisted laser desorption-ionization mass spectrometry, differentially expressed plasma proteins were identified in study participants with deliberate self-harm compared to age- and gender-matched controls. The finding was validated using mass spectrometry-based isotope-labelled relative quantification and Western blot analysis in a new set of individuals with deliberate self-harm and controls.

Results:

The plasma proteomic analysis showed that apolipoprotein A-IV (Apo A-IV) was downregulated by 2.63-fold (confidence interval: 1.52-4.54) in individuals with deliberate self-harm (n=10) compared to matched controls, which was consistent in mass spectrometry-based relative quantification and Western blot analysis performed in an independent set of individuals with deliberate self-harm (n=18). In addition, plasma levels of total cholesterol, esterified cholesterol and high-density lipoprotein (HDL) were observed to be significantly lower individuals with deliberate self-harm compared to controls.

Interpretation & conclusions:

Apo A-IV, which plays a crucial role in the esterification of free cholesterol, was found to be downregulated with concomitantly decreased levels of HDL, esterified cholesterol and total cholesterol in individuals with deliberate self-harm compared to matched controls. The present findings might provide a link between the differential regulation of plasma proteins and the previously reported results on altered cholesterol levels in individuals with deliberate self-harm.
International law and criminalizing illegal trade in endangered species (from the Far Eastern perspective)
Authors: Chitov Alexandre
Published: November 2019

The article examines international law in relation to international trade in endangered species. It analyzes the major international agreement in this area: CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora 1973) in the context of Thailand and China. The article argues that CITES does not sufficiently address the need of those countries to criminalize illegal trade in endangered animals and plants across borders. CITES requires an increased administrative control over the trade which many developing countries are unable to carry out in order to achieve an effective level of protection for the endangered species. Under the influence of CITES, the crime of illegal trade is defined in Thailand and China narrowly as trade in violation of administrative controls. The main argument of this article is, first, that the countries, such as Thailand and China, must adopt a broader concept of the crime of illegal trade in endangered species. Second, there is a need to adopt this concept on an international level in order to facilitate a successful fulfillment of the countries’ international obligations.
A review of environmental law in Maldives with respect to conservation, biodiversity, fisheries and tourism
Authors: Techera Erika , Cannell-Lunn Madelaine
Published: November 2019

Maldives is a small island developing State in the Indian Ocean comprised of multiple low-lying, sandy islands and coral reefs. It has a long history of human occupation and dependence on the environment, particularly the ocean, for food, resources and trade. Maldives continues to rely upon nature through tourism and fisheries. Conservation and sustainable use of the environment and its resources is therefore of paramount importance to Maldives. In response to growing environmental pressures, including climate change, the State has engaged at global and regional levels, ratifying treaties and participating in key international institutions. It has also developed national law and policy, as well as relevant plans and strategies focused on sustainability. Despite this activity, relatively little legal research has focused on this jurisdiction. This article aims to contribute to the literature on Maldives by exploring environmental, fisheries and tourism laws and policies, analysing current legislative developments and making tentative recommendations in areas where governance could be enhanced.
Evolutionary transformation of the journal
Authors: Kokowski Michał
Published: November 2019

The article outlines the sixth phase of the development of the journal Studia Historiae Scientiarum (previous name Prace Komisji Historii Nauki PAU / Proceedings of the PAU Commission on the History of Science).
The information is provided on the following matters: the journal obtaining the award in the ministerial program “Support for scientific journals 2019–2020” (in April 2019), the evaluation of the magazine in “ICI Master Journal List 2017” (published at the end of 2018) and in “List of journals of the Ministry of Science and Higher Education of the Polish Republic 2019” (published on 31 July 2019), the indexation of the journal in the Scopus database (from September 2019), the implementation of the service Similarity Check (Crossref), the works on updating the journal’s website in OJS (3.1.2.1.), the number of foreign authors and the number of reviewers of the current volume of the journal.
Botany at Stefan Batory University in Vilna (Wilno, Vilnius) (1919–1939)
Authors: Zemanek Alicja , Köhler Piotr
Published: November 2019

The university in Vilna (in Polish: Wilno, now: Vilnius, Lithuania), founded in 1579, by Stefan Batory (Stephen Báthory), King of Poland and Grand Duke of Lithuania, was a centre of Polish botany in 1780–1832 and 1919–1939.
In the latter period the university functioned under the Polish name Uniwersytet Stefana Batorego (in English: Stefan Batory University). It comprised six departments connected with botany (General Botany, Pharmacognosy and Cultivation of Medicinal Plants, Plant Taxonomy, Botanical Garden, Garden of Medicinal Plants, and Natural History Museum).
There worked such distinguished scientists, as: Jakub Mowszowicz (1901–1983), phytogeographer and phytosociologist; Jan Muszyński (1884–1957), botanist and pharmacist; Bronisław Szakien (1890–1938), cytologist and mycologist; Piotr Wiśniewski (1881––1971), physiologist; and Józef Trzebiński (1867–1941), mycologist and phytopathologist. Ca. 300 publications (including ca. 100 scientific ones) were printed in the period investigated, dealing mainly with morphology and anatomy, cytology, plant physiology, floristics (floristic geography of plants), systematics (taxonomy) of vascular plants, mycology and phytopathology, ecology of plant communities (phytosociology), as well as ethnobotany, and history of botany. Stefan Batory University was also an important centre of teaching and popularization of botany in that region of Europe.
The aim of the article is to describe the history of botany at the Stefan Batory University in 1919–1939.
Local knowledge and amateur participation. Shevchenko Scientific Society, 1892–1914
Authors: Rohde Martin
Published: November 2019

This article discusses the possibilities which amateur participation offered to the young Shevchenko Scientific Society – limited to the description of the activities of this Society in the years 1892–1914.
The Society intended to develop rapidly into an academy of sciences in the Ukrainian language, but lacked the necessary resources. The existing network of Ukrainian associations in Eastern Galicia, which contributed to the development of scientific exchange, was helpful in achieving that status.
Before looking into the details of research agendas, the possibilities to use concepts of citizen science are measured for the context of the late 19th and the early 20th century.
The relation between ‘scientists’ and ‘amateurs’ is problematized on the basis of biographical examples of engaged scientists and activists, especially Volodymyr Hnatiuk from the Ethnographic Commission and Stanislav Dnistriansky from the Statistical Commission.
In order to understand the specific relations of Hnatiuk to his network of folklore collectors, their projects, aims and possibilities, Hnatiuk’s research is contrasted with the statistical surveys initiated by Dnistrians’kyĭ.
Based on their archival documentation and published sources, these research projects are analyzed together with the different circumstances between the poles of “national science” and “local knowledge”.
The article suggests that Ukrainian amateur researchers contributed intensely to the nation- and region-building in the multinational Empire.
“We can and we must”: The scientificity of trade-union history-writing in the Soviet Union in the 1920s
Authors: Gilmintinov Roman
Published: November 2019

In the 1920s, the young Soviet Republic, rejecting the old social system, turned to the study of the past. Instead of engaging with professional historians, the new regime initiated a whole range of large-scale participatory projects incorporated into political and public institutions to produce new, revolutionary history. In this article, instead of approaching this topic in terms of ideology and memory I put it in the context of history of science. Focusing on the case of trade unions, I suggest considering the early Soviet non-academic history-writing as a form of radical citizen science. Even though trade unionists had no special education, they dared to use scientific methods in their research that ended with positive results. This story allows us to question the opposition between amateurs and professionals in the field of citizen science.
Komentarz do artykułu Mariusza W. Majewskiego opublikowanego w Studia Historiae Scientiarum 17 (2018), ss. 89–117
Authors: Tomaszewski Paweł E.
Published: November 2019

Przedstawiono kilka uzupełniających uwag do tekstu Mariusza W. Majewskiego o Instytucie Metalurgii i Metaloznawstwa Politechniki Warszawskiej oraz o roli prof. Jana Czochralskiego, by pokazać, że temat nie został wyczerpany a pewne sformułowania wymagają korekty.

Słowa kluczowe: Jan Czochralski, Instytut Metalurgii i Metaloznawstwa, Politechnika Warszawska, Chemiczny Instytut Badawczy
 
Comments on the paper by Mariusz W. Majewski published in Studia Historiae Scientiarum 17 (2018), pp. 89–117
Abstract

Several remarks on the text by Mariusz W. Majewski devoted to the history of the Institute of Metallurgy and Metal Science at the Technical University of Warsaw, and on the role of Prof. Jan Czochralski, are presented. The aim was to show that the topic has not been exhausted, and some wordings need correction.

Key words: Jan Czochralski, Institute of Metallurgy and Metal Science, Warsaw University of Technology, Chemical Research Institute
report on the activities of the PAU Commission on the History of Science in 2018/2019
Authors: Kokowski Michał
Published: November 2019

The report discusses the activities of the Commission on the History of Science of the Polish Academy of Arts and Sciences in 2018/2019. It presents the lists of: scientific meetings, conferences, symposia, new members of the Commission, and new publications.
No que é preciso crer para ser um suicidário?
Authors: Vaz Lúcio
Published: November 2019

Dentro de um esforço de fornecer uma definição filosoficamente coerente e rigorosa que parte do conceito comum de suicídio, o artigo se concentra numa compreensão dos aspectos mais fundamentais e gerais das crenças das pessoas que consideram seriamente essa possibilidade. A definição leva ao extremo de coerência as características marcantes da liberdade e da consciência, com atenção especial ao aspecto reflexivo e autorreferente. Por fim, esse enfoque centrado nas crenças do agente se presta a uma diferenciação do suicídio em relação a mortes autoinfligidas acidentais e por desconhecimento ou, mais amplamente, a ações parassuicidas.
O altruísmo e a busca de sentido na motivação de alunos
Authors: Goya Alcides
Published: November 2019

Nesta pesquisa busca-se uma alternativa para melhorar a motivação de alunos para aprender ciências conforme dois modelos motivacionais, pouco explorados no âmbito de ensino, especialmente no Brasil. O primeiro modelo considera três níveis de motivações: extrínsecas, intrínsecas e transcendentes. O segundo modelo analisa a pessoa em quatro dimensões. Ambos modelos apresentaram resultados positivos no contexto empresarial, foram testados em algumas instituições de ensino e possuem, em comum, dois traços centrais: a busca de sentido e o altruísmo. Os dados desta pesquisa foram coletados, sobretudo, por meio de dois questionários, aplicados a um grupo de 102 alunos de três áreas de Engenharia de uma faculdade pública. As análises dos resultados dão indícios de que a busca de sentido e o altruísmo, traços centrais dos dois modelos motivacionais, foram considerados relevantes pelos estudantes, que cursavam a disciplina de Física.
A abordagem CTS e a educação matemática crítica como estratégia de ensino-aprendizagem na formação de professores de matemática
Authors: Costa Sbrana Maria de Fátima , Albrecht Evonir , Aguiar Marcia
Published: November 2019

Este artigo está embasado em uma pesquisa de mestrado e tem como objetivo discutir aspectos relevantes de um curso de formação continuada, para professores que ensinam Matemática, com base nas abordagens CTS (Ciência, Tecnologia e Sociedade) e EMC (Educação Matemática Crítica).  A pesquisa, de natureza qualitativa, ocorreu em dois momentos. Primeiramente, realizamos uma análise das questões de Matemática contidas no ENEM (Exame Nacional de Ensino Médio) (2012-2016), para investigar se tais questões possuíam em seu contexto, questionamentos relacionados à abordagem CTS. Em um segundo momento, considerando o tripé: Ensino, Pesquisa e Extensão, desenvolvemos um curso de extensão, com base nas abordagens CTS e EMC, com o objetivo de identificar como os professores compreendem as abordagens CTS e EMC e de que maneira eles incorporam a temática em sua prática, além de construir com os professores, estratégias contextualizadas para o ensino da Matemática. As questões analisadas foram utilizadas como instrumento de ensino-aprendizagem para discutir possibilidades de incluir as abordagens CTS e EMC no ensino de Matemática. Observamos que os professores não conheciam as abordagens CTS e EMC, tampouco contemplavam a temática em sua prática. Desta forma, ressaltamos a importância dos cursos de formação continuada, pois apresenta ao professor novas estratégias didático-pedagógicas, bem como, possibilita discussões importantes sobre a sua prática.
Ciência, opressão e teatro: um caso de pesquisa educacional baseada em artes
Authors: Moreira Leonardo Maciel , Nascimento Angélica Santana do , Souza Laise Novellino Nunes de
Published: November 2019

A abordagem de temas controversos tem sido um caminho para evidenciar o vínculo entre ciência e contexto social, favorecendo a educação CTS. Esta pesquisa tem como objetivo identificar e caracterizar as percepções de um grupo de estudantes universitários sobre o tema controverso: relações entre ciência e opressão. O método utilizado foi a pesquisa educacional baseada em artes, adotando o Teatro do Oprimido como linguagem artística. Encontrou-se que, na percepção dos colaboradores, a ciência pode ser utilizada para oprimir e que a opressão por meio da ciência é caracterizada por similaridades com opressões impostas pelo mundo do trabalho, pela mídia e pelo sistema de educação. Os resultados sugerem que a discussão do tema ciência e opressão favorece o conhecimento sobre a ciência, podendo resultar em atitudes positivas para com ela, e sinalizam a proficuidade da pesquisa educacional baseada em artes para a educação em ciências.
Programas de ensino e manuais escolares como fontes para estudo da constituição da matemática para ensinar
Authors: Valente Wagner Rodrigues
Published: November 2019

Este texto aborda o tema da matemática na formação de professores dos primeiros anos escolares, hoje denominados Ensino Fundamental I. Trata do assunto considerando que, em meio ao conjunto de saberes profissionais do professor dos primeiros anos escolares, historicamente vem sendo elaborada uma matemática para ensinar articulada a uma matemática a ensinar. A matemática para ensinar revela-se como um saber profissional, uma matemática para o exercício da docência, uma ferramenta de trabalho do professor para ensinar matemática. E, se assim é, por hipótese teórica, a pergunta mobilizadora do artigo pode ser enunciada como: no uso dos programas de ensino e de manuais escolares como fontes de pesquisa, como caracterizar a matemática para ensinar? Consideram-se como aportes teórico-metodológicos os estudos sócio-históricos que vêm sendo desenvolvidos pela Equipe de Pesquisa de História Social da Educação – ERHISE, da Universidade de Genebra. Na conclusão do estudo, pontuam-se elementos importantes para o desenvolvimento de pesquisas que buscam caracterizar o saber profissional do professor que ensina matemática.