bluuebunny/crossref_metadata_2025 huggingface dataset:
Novas dinâmicas de consumo turístico: o papel da experiência na identidade do turista
Authors: Branco Rachel , Teles Adonai
Published: June 2020

Os ares contemporâneos trouxeram muitas transformações em práticas cotidianas de nossa sociedade. Um dos fenômenos afetados por estas mudanças foi o consumo, que passou de mera necessidade de aquisição de bens e serviços a símbolo, ou signo, que remete à identidade do consumidor dentro de seu contexto cultural. No turismo, essa transição é observada quando novas empresas promovem uma ruptura com o modelo de negócios anterior, rompendo também com a forma como se comunicam com seu consumidor, agora chamado de usuário. Um dos exemplos destas rupturas é o Airbnb, serviço de mediação entre anfitriões e hóspedes de todo o mundo por meio de uma plataforma online de hospedagem domiciliar colaborativa. O Airbnb não apenas ostenta números expressivos no mercado em que atua, mas também vem criando uma comunidade de milhares de usuários adeptos de seu produto, gestado no fenômeno mais abrangente da economia compartilhada ou colaborativa. Considerado um rico contexto para a pesquisa acadêmica das práticas de consumo turístico contemporâneas, o Airbnb tem sido o foco de estudo das áreas da administração e da economia em especial, mas acredita-se que outras propriedades deste fenômeno têm sido deixadas de lado, inclusive estudos partindo do próprio turismo. Portanto, o objetivo deste trabalho foi realizar uma revisão sistemática da literatura dos últimos cinco anos a fim escrutinar a produção literária que se investe de apresentar o Airbnb como signo de consumo de um novo turista, sedento por autenticidade, e que pode encontrar na empresa um discurso que dialoga diretamente com sua identidade. Concluímos que a hospedagem nos moldes oferecidos pelo Airbnb representa algo maior que seu valor monetário, apesar de o baixo custo para o hóspede se um item de especial relevância para a escolha pela plataforma. Autenticidade relacionada à hospedagem promove experiências genuínas e únicas num ambiente influenciado pelo discurso da economia do compartilhamento e o uso intensivo das TIC.
A Hybrid Teaching Mode Based on Machine Learning Algorithm
Authors: Liang Jinjin , Nie Yong
Published: June 2020

Background:

Hybrid teaching mode is a new trend under the Education Informatization environment, which combines the advantages of educators’ supervision offline and learners’ self-regulated learning online. Capturing learners’ learning behavior data becomes easy both from the traditional classroom and online platform.

Methods:

If machine learning algorithms can be applied to mine valuable information underneath those behavior data, it will provide scientific evidence and contribute to wise decision making as well as effective teaching process designing by educators.

Results:

This paper proposed a hybrid teaching mode utilizing machine learning algorithms, which uses clustering analysis to analyze the learner’s characteristics and introduces a support vector machine to predict future learning performance. The hybrid mode matches the predicted results to carry out the offline teaching process.

Conclusion:

Simulation results on about 356 students’ data on one specific course in a certain semester demonstrate that the proposed hybrid teaching mode performs very well by analyzing and predicting the learners’ performance with high accuracies.
Choice Shifts in School Disciplinary Decision Making: Analysis of Age Differences of Panel Members
Authors: Aloka Peter J.O.
Published: June 2020

Background:

Decision making is critical to each organization and it requires the ability to find a possible balance between risky and cautious decisions. The Kenyan secondary schools are mandated by the Ministry of Education to manage students’ misbehaviors by the disciplinary panels.

Aim:

The present study investigated the choice shifts in disciplinary decision making in Kenyan secondary schools based on age groups of the panel members.

Methods:

The Quasi-Experimental Pretest-Posttest Design was adopted. The study targeted 360 teachers- members of disciplinary panels in 45 secondary schools in the Rongo sub-county of Kenya. A sample size of 78 members of disciplinary panels in 10 secondary schools was involved. This was 22% of the target population of members of disciplinary panels in the Rongo district. The choice shift in decisions was ascertained using the Modified Choice Dilemma Questionnaire. The validity of the tools was ensured by the expert judgment by two Kenyan psychologists, while the reliability was determined using the internal consistency method and an alpha of 0.695 was reported.

Results:

The results of the Multivariate Analysis Of Variance indicated that there were differences in choice shifts from the pre to post-disciplinary hearing decisions among the members of selected school disciplinary panels on the basis of their age groups (Wilk’s Lambda (λ) test:F(12, 188) = 7.40,P =0.000,P< 0.05).

Conclusion:

It was concluded that the age of the members of disciplinary panels influenced the nature of choice shifts in decisions. It was recommended that principals should ensure that the membership of school disciplinary panels is broad-based.
Gender-Specific Associations of Different Anthropometric Indices with Sleep Quality and Daytime Sleepiness
Authors: Muaidi Qassim I. , Ahsan Mohammad
Published: June 2020

Background:

Sleep is necessary for all living beings and plays a significant role in preventing health complications. Many health risks are associated with overweight and obesity. Association between sleep habits and anthropometric indices were investigated in this study.

Objective:

The objective of this study was to determine gender-specific associations of different anthropometric indices with sleep quality and daytime sleepiness.

Methods:

This cross-sectional study involved 550 males and females. Anthropometric indices measured with the help of a bioelectric impedance device. The Pittsburgh sleeps quality index was used to evaluate sleep quality over a one-month period, and the Epworth sleepiness scale was used to measure the level of daytime sleepiness. Kruskal-Wallis test was applied for comparative analysis, and Spearman correlation was also used to assess the relationship among all variables.

Results:

A negative correlation identified between the percentage of body fat with sleep quality and daytime sleepiness and other anthropometric indices has a low positive correlation, but not significant for sleep quality and daytime sleepiness. While females have a negative correlation for daytime sleepiness and a significant difference among anthropometric indices for sleep quality and daytime sleepiness was evident. A higher percentage of body fat was found among female participants.

Conclusion:

This study has highlighted the prevalence of obesity with multiple anthropometric indices. Such studies could help evaluate the role of anthropometric indices in predicting the quality of sleep and daytime sleepiness in male and female participants.
To Tell or Not to Tell: Disclosure and Self-Management among Adults with Early-Onset Type 2 Diabetes: A Qualitative Study
Authors: Nielsen Maja Hykkelbjerg , Jensen Annesofie Lunde , Bo Anne , Maindal Helle Terkildsen
Published: June 2020

Background:

Adults with early-onset Type 2 Diabetes Mellitus (T2DM) are an emerging high-risk population who may experience social challenges related to diabetes management.

Objective:

To explore the disclosure of T2DM and how disclosure affects diabetes self-management and the psychosocial adjustment to life with diabetes among adults with early-onset T2DM.

Methods:

A qualitative study was conducted using Systematic Text Condensation (STC). Data was derived from semi-structured interviews with 15 individuals with T2DM ≤ 46 years (10 women and 5 men) recruited from diverse settings using purposeful sampling.

Results:

Most informants disclosed their diabetes to a close relative shortly after receiving the diagnosis. This led to immediate emotional support and overall positive disclosure experiences. However, informants often hesitated to disclose their condition to others due to shame, fear of negative judgement or social exclusion. Over time, the majority of informants became more open about their condition, which often resulted in emotional and practical self-management support. Those most reluctant to disclosing their diabetes struggled with shame and negative diabetes-related emotions, which had negative effects on their diabetes self-management.

Conclusion:

Disclosure of T2DM seemed important for the social, emotional and practical management of diabetes among adults with early-onset T2DM. The disclosure was most often accompanied by feelings of shame and fear of condemnation. Professional guidance to support disclosure and interventions to address stigma may improve well-being and diabetes self-management in this population.
Investigation of Compounds and Biological Activity of Selected Indonesian Marine Sponges
Authors: Sahidin Idin , Sabandar Carla W. , Wahyuni  , Hamsidi Rini , Mardikasari Sandra Aulia , Zubaydah Wa Ode Sitti , Sadarun Baru , Musnina Wa Ode Sitti , Darmawan Ahmad , Sundowo Andini
Published: June 2020

Background:

Marine sponges provided a great source of natural products with promising
biological activity. This study was aimed to investigate the chemical constituents of methanol extracts
of selected Indonesian marine sponges (Callyspongia sp., Clathria sp., Melophlus sarasinorum,
and Xestospongia sp.), collected from the Saponda Islands, Southeast Sulawesi, Indonesia as
well as to evaluate their antimicrobial and antioxidant activities.

Methods:

LCMS/MS analysis used to identify the compounds. Agar well diffusion and DPPH
assays were used to evaluate the antimicrobial and antioxidant activities.

Results:

Chemical screening reported alkaloids, terpenoids, steroids, and saponins from all investigated
sponges. The LC-MS/MS analysis identified various compounds which mainly contained steroids.
Antimicrobial activity (against Bacillus subtilis, Escherichia coli, Salmonella enterica, and
Candida albicans) was only shown by the Xestospongia sp. extract. Meanwhile, extracts of M.
sarasinorum, Xestospongia sp., and Callyspongia sp. exhibited potent radical scavenging activity.

Conclusion:

The study concluded that the selected sponges could provide various groups of
compounds. Methanol extracts of these sponges could be used as sources of antimicrobial and
antioxidant agents.
Racial Differences in Risk Factors for Kidney Stone Formation
Authors: Zisman Anna L. , Coe Fredric L. , Cohen Andrew J. , Riedinger Christopher B. , Worcester Elaine M.
Published: June 2020

Background and objectives

Incidence of kidney stone disease is rising. It is not known whether mechanisms of stone formation differ across racial groups. Our objective was to identify differing lithogenic risk factors across racial groups in idiopathic nephrolithiasis.

Design, setting, participants, & measurements

We conducted a retrospective cohort study evaluating metabolic risk factors in black and age-matched white idiopathic stone formers at our tertiary referral center. We compared serum and urine metabolic risk factors pre- and post-treatment across racial groups using analysis of covariance. Generalized linear modeling was used to build regression models for risk of stone formation in both groups.

Results

Among 117 black and 172 white stone formers, urine volume was lower in black stone formers (1.4±0.8 versus 2.0±0.8 L/d, P<0.001). Urine calcium was lower in black stone formers (116±70 versus 217±115 mg/d, P<0.001). Supersaturations for calcium oxalate were similar among the groups, whereas calcium phosphate supersaturation was higher in white stone formers, and uric acid supersaturation was higher in black stone formers. Electrolyte free water clearance was significantly lower in black stone formers (207±780 versus 435±759 ml/d, P=0.02). In the subgroup of 77 black patients and 107 white patients with post-treatment evaluations, urine volume rose significantly and similarly in both groups. Urine sodium was unchanged in whites but increased in blacks by 40 mmol/d (95% confidence interval, 32 to 48 mmol/d). Electrolyte free water clearance remained lower in black stone formers (385±891 versus 706±893 ml/d, P=0.02). Post-treatment supersaturations were similar across the groups except for calcium phosphate, which improved with treatment in whites.

Conclusions

Black stone formers have lower 24-hour urine calcium excretion and urine volume. Increases in urine volume with treatment were associated with increased solute, but not free water, excretion in black stone formers.
Estructura de la red de la Organización Mundial de Comercio: desafíos y oportunidades para México
Authors: Lambarry Vilchis Fernando , Silva Rodríguez de San M Jorge Alejandro , Trujillo Flores Mara Maricela
Published: June 2020

Los estudios en cuanto a la estructura de redes comerciales son recurrentes en configuraciones con un núcleo central y un bloque de países en la periferia, que fomentan inequitativos y desiguales intercambios. Consecuente con esto, el objetivo de este estudio es analizar estructuralmente la centralidad de la red económica de México en el marco de la Organización Mundial de Comercio y con ello identificar los desafíos y oportunidades para el país. El método de investigación implicó calcular métricas de centralidad fundamentadas en la teoría de redes. Se concluye que la red tiene una estructura estratificada, lo que desafía a México para replantear sus estrategias de inserción comercial internacional en América Latina y Asia Pacífico para el desarrollo y modernización de su economía.
Factores clave de la cadena logística del comercio exterior de un puerto mexicano: análisis a través de redes neuronales artificiales
Authors: Zamora Torres América Ivonne , González García Juan
Published: June 2020

Actualmente, el comercio internacional evoluciona, mostrando una mayor expansión de las cadenas de valor mundiales, que se han reforzado logrando ser más eficientes integrándose a la economía mundial con costos más bajos; gracias a los avances tecnológicos y la mejora de los procesos organizacionales, se ha aumentado la competitividad de los productos en los mercados mundiales. El objetivo de este trabajo es identificar los principales elementos de cinco factores clave de la cadena logística del comercio exterior del puerto de Lázaro Cárdenas y calcular el valor pronosticado para cada factor, identificando las áreas de oportunidad y proponer mejoras y adecuaciones. Para lo cual se utiliza la metodología de redes neuronales artificiales (RNA) a través del procesamiento perceptrón multicapa. Los resultados muestran la existencia de cinco variables, las cuales son altamente significativas, destacando de entre ellas la aduana que, obtuvo la ponderación más baja, lo que indica la necesidad de mejora de los procesos aduanales en el puerto, para hacerlo más eficiente.
DISTRIBUTION OF TRIATOMINES (HETEROPTERA: REDUVIIDAE) ASSOCIATED WITH HUMAN HABITATION AND POTENTIAL RISK AREAS IN SIX STATES OF THE MEXICAN REPUBLIC
Authors: Benítez-Alva José Ismael , Huerta Herón , Téllez-Rendón Juan Luis
Published: June 2020

Chagas disease is a real public health problem in Latin America, caused by the flagellate protozoan
Trypanosoma cruzi and described by Carlos Chagas in 1909. T. cruzi is transmitted by bloodsucking
insects of the subfamily Triatominae which thrive in sylvatic, peridomestic, and domestic habitats,
being in the latter two a potential risk to public health because of their role as vectors. We review the
distribution of triatomines associated with human habitation and their natural infection with T. cruzi
from the states of Aguascalientes, Chiapas, Guerrero, Jalisco, Michoacán, and Oaxaca. Based on
samples received in the Laboratory of Entomology of the Institute of Epidemiological Diagnosis and
Reference (InDRE-SSA) during the period 2006 to 2010, distribution maps and stratification of potential
areas of risk were made. A total of 1910 specimens of seven species of triatomines were identified.
Triatoma barberi, Meccus longipennis and M. pallidipennis were the species with the highest rate of
infection with T. cruzi; M. pallidipennis and T. dimidiata were the most widely distributed species.
RHIZOPHORA MANGLE LINNAEUS, 1753 COMO ESPECIE SOMBRILLA Y RAZÓN BIOLÓGICA PARA LA PROTECCIÓN Y RESTAURACIÓN DE LA LAGUNA DE TAMPAMACHOCO, VERACRUZ, MÉXICO
Authors: De la Cruz-Francisco Vicencio
Published: June 2020

Coastal development is a major anthropogenic factors that modify and degrade the coastal
lagoons and mangrove swamps of Mexico, for this reason, the aim of this work is to highlight
the importance of representing the red mangrove (Rhizophora mangle) at the biological and
ecological coastal ecosystems and conceptualize it as an umbrella species for the lake
Tampamachoco to generate initiatives to protect and restore the lagoon system as signs of
deterioration and contamination. Proposes strategies and actions for restoration and protection
of the lagoon Tampamachoco to safeguard the flora and fauna that protects the red mangrove,
improved hydrological conditions of the lagoon and retrieve important species and commercial
fisheries which are certain to reactivate economic income fisheries and restaurant.
Lessons from Laos: selecting appropriate communication media for context
Authors: Ward Wesley
Published: June 2020

Current agricultural research depends on complex contexts that can impose major barriers for communication within geographically dispersed research teams. Such barriers are multiplied where team members originate from and operate in contrasting cultures and economic circumstances. A case study based in the Lao People's Democratic Republic (PDR) showed how to identify such barriers between Lao and Australian scientists using transcripts of 30 interviews with these groups. These were analysed using grounded theory analysis to identify these barriers which were operationalised to construct an assessment tool — I-CHET. This tool was subsequently applied to nine online communication technologies used by the interviewees to identify the technology that displayed the fewest problems regarding these barriers — email, and those with the most problems — websites and Skype. The study highlighted the complexity of communication barriers for international research teams, beyond economic and online infrastructural constraints, to include individual and cultural differences as well as language. By addressing these differences, project managers and funding agencies can maximise the benefits from research completed by international teams that provide vital agricultural knowledge and methodologies for many developing countries worldwide.
The communication of scientific research in news media: Contemporary challenges and opportunities
Authors: Dempster Georgia
Published: June 2020

This commentary is based on a talk that was presented during the Australian Science Communicators Conference in February 2020. As a Ph.D. student, my research is focused on the investigation of methods of communicating science to public audiences. Within science communication, this talk discussed a case study that was completed as part of my Ph.D. This commentary details a review of a portion of the literature that I completed for my Ph.D. related to the misreporting of scientific research in news media. This review of the literature is relevant to the contemporary environment of scientific research reported in news media. I conclude by suggesting that given the challenging science and news media landscapes; scientists, science communicators and journalists must work more effectively together to uphold the integrity of their professions and to ensure that scientific research is more accurately reported in news media. Additionally, I argue that more research is needed that seeks to understand the relationships between scientists, science communicators and journalists to enable more effective working relationships between these professionals.
Remoção cirúrgica de elemento dentário no interior do seio - maxilar: Relato de caso
Authors: Figueiredo de Brito Resende Rodrigo
Published: June 2020

Resumo O seio - maxilar é a cavidade paranasal ampla que ocupa todo o corpo do osso maxilar, concedendo uma íntima relação com as raízes dos dentes posteriores superiores. Em alguns casos, podem ocorrer algumas complicações cirúrgicas, onde uma das de maior ocorrência é a penetração de corpos estranhos no interior da cavidade sinusal. Este trabalho tem como objetivo discutir e relatar um caso clínicoda paciente B.F.R., leucoderma, sexo feminino, 36 anos de idade, encaminhada à Clínica de Cirurgia Bucal do Curso de Odontologia da Universidade Iguaçu/RJ, onde a mesma apresentava ao exame por imagem, o elemento dentário nº18 no interior do seio - maxilar gerando episódios recorrentes de sinusite. O procedimento foi realizado sob anestesia local em ambiente ambulatorial, sem intercorrências trans e pós – operatórias. Em acompanhamento ambulatorial pós-operatório no período de 12 meses, não houve mais a presença de novos quadros de sinusite e/ou queixas álgicas na região.    Palavras – chave:Cirurgia Bucal; Seio - maxilar; Sinusite. AbstractThe maxillary sinus is the wide paranasal cavity that occupies the entire body of the maxillary bone, granting an intimate relationship with the roots of the upper posterior teeth. In some cases, some surgical complications can occur, where one of the most frequent is the penetration of foreign bodies into the sinus cavity. This paper aims to discuss and report a clinical case of the patient B.F.R., leucoderma, female, 36 years old, referred to the Oral Surgery Clinic of the Dentistry Course at Universidade Iguaçu / RJ, where she presented it to the imaging exam, dental element nº18 inside the maxillary sinus, generating recurrent episodes of sinusitis. The procedure was performed under local anesthesia in an outpatient setting, with no trans and postoperative complications. In outpatient postoperative follow-up over a 12-month period, there was no longer the presence of new sinusitis and / or pain complaints in the region.Key words:Oral Surgery; Maxillary sinus; Sinusitis.
Profil sikap ilmiah siswa kelas VIII SMP, melalui model pembelajaran guided inquiry laboratory experiment method (gilem)
Authors: Kusherawati Lusi , Windyariani Sistiana , Setiono Setiono
Published: June 2020

This study aims to determine the profile of the scientific attitude of VIII grade students of Sukabumi City Middle School. This research was conducted in October in the 2nd week in one of the Sukabumi City Junior High Schools. This research uses a descriptive method. The approach used in this research is a qualitative approach. The population in this study were students of class VIII of SMP Negeri Sukabumi as many as 65 people. Samples were taken by using purposive sampling technique. Data collection was performed using 15 self-assessments using 7 scientific attitude indicators. The results showed that the profile of the scientific attitude of VIII grade students of Sukabumi City Middle School in 2019/2020 school year was still in the lack category. But these results must still be improved again by using models, strategies and learning approaches that are able to improve students' scientific attitudes. One suggested learning model is the guided inquiry laboratory experiment method (Gilem) learning model.

Abstrak. Penelitian ini bertujuan untuk mengetahui profil sikap ilmiah siswa kelas VIII SMP Negeri Kota Sukabumi. Penelitian ini dilaksanakan pada bulan oktober di minggu ke-2 di salah satu SMP Negeri Kota Sukabumi. Penelitian ini menggunakan metode deskriptif. Pendekatan yang digunakan dalam penelitian ini yaitu pendekatan kualitatif. Populasi pada penelitian ini adalah peserta didik kelas VIII SMP Negeri Kota Sukabumi sebanyak  65 orang. Sampel diambil dengan menggunakan teknik purposive sampling. Pengumpulan data dilakukan dengan menggunakan self assessment sebanyak 15 soal dengan menggunakan 7 indikator sikap ilmiah. Hasil penelitian menunjukkan bahwa profil sikap ilmiah siswa kelas VIII SMP Negeri Kota Sukabumi tahun ajaran 2019/2020 masih dalam kategori kurang. Namun hasil tersebut masih harus ditingkatkan kembali dengan menggunakan model, strategi dan pendekatan pembelajaran yang mampu meningkatkan sikap ilmiah siswa. Salah satu model pembelajaran yang disarankan adalan model pemebelajaran guided inquiry laboratory experiment method (Gilem).
Pension funds and governance: The effect of government sponsorship
Authors: de Medeiros Teixeira Bruno , Macagnan Clea Beatriz , Souza Simon Davi , Vancin Daniel Francisco
Published: June 2020

The issue of conflict of interest and information asymmetry underlies the relationship between management, sponsors, and pension fund participants. The governance system aimed at mitigating the conflict of interest and information asymmetry appears as practices that, even with the cost, could contribute to the effectiveness of the pension fund investments. In this context, the present study aimed to investigate empirically how the extent of Brazilian pension funds governance practices is affected by the nature of the sponsoring entity. With a sample of 208 observations collected manually, representing 104 pension funds, from 2013 and 2017, we analyzed the impact of the sponsorship on the governance of the Brazilian pension funds. We measured governance using a governance index composed of 34 indicators, built on the Brazilian pension fund legislation, guidelines and recommendations issued by public bodies, and the governance literature. The result of this study indicates that, contrary to the initial expectations of the survey, a state-controlled company sponsorship explains a better level of governance. This study contributes to a better understanding of how the adoption of governance practices works, especially with the reported cases of corruption in Brazilian pension funds.
PER3 VNTR GENOTYPES MAY PREDICT OVERALL SURVIVAL IN BLADDER CANCER PATIENTS IN THE TURKISH POPULATION
Authors: YEĞİN Zeynep , ÖZEN Filiz , ALTİNİSİK Yasin , YILDIRIM İbrahim , YILDIRIM Asıf
Published: June 2020

Circadian genes were proven to play significant roles in tumor development and progression via coordinating various cellular processes. Though circadian rhythm disturbances both on the level of expression and genetic variant analysis have been associated with increased risk for many cancer types, none has investigated the potential effect of PER3 VNTR in bladder tumorigenesis yet. In this study, we aimed to assess PER3 VNTR’s effect in terms of creating susceptibility to bladder carcinoma formation. Our second target was to enlighten the possible associations between PER3 genotypes and clinicopathological correlations in bladder carcinoma cohort and thus evaluate outcomes in bladder carcinoma prognosis. In this case-control study, 116 patients and 120 healthy controls were recruited. DNA was isolated from peripheral blood using the standard salting-out procedure and PER3 VNTR variants (ins/del polymorphism) were determined with PCR technique to distinguish the 5-repeats allele (401 bp) from the 4-repeats allele (347 bp). Though this exploratory analysis did not provide evidence supporting the role of PER3 VNTR in the onset of bladder carcinoma, it enabled us to make a risk assessment for the prognosis of bladder carcinoma patients. The survival times of patients decreased in the patient group (progression and cystectomy positive) for PER3 4/4 genotype and (recurrence, progression and cystectomy positive) for PER3 4/5 genotype. Results presented in this study are highly recommended to be investigated and validated in larger samples in different populations and ethnicities to generalize potential clinical utility.
Application of analytical techniques to the unveiling of the glazing technology of medieval pottery from the Belgrade Fortress
Authors: Damjanovic-Vasilic Ljiljana , Bikic Vesna , Stojanovic Srna , Bajuk-Bogdanovic Danica , Dzodan Djurdjija , Mentus Slavko
Published: June 2020

Medieval glazed ceramics, dated to the early 15th century, excavated at the Belgrade Fortress, Serbia, were investigated by combining optical microscopy, X-ray powder diffraction (XRPD), scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS), micro-Raman spectroscopy and multivariate statistical analysis. The decoration and style of the investigated ceramics were characteristic of workshops from different areas of the medieval Serbian State: Ras, Krusevac and Belgrade/Smederevo. Comparison was made with ceramic samples from the same period excavated at the Studenica Monastery, the hitherto earliest workshop discovered, which were used as reference material for the Ras area. Ceramics from the Belgrade Fortress were covered with a transparent, lead-based glaze. The majority of the glazes were produced by application of mixture of lead oxide and quartz to the clay body, whereas only two samples were glazed by application of lead oxide by itself. The brown colours of the glaze originated from Fe-based spinel, whereas copper and iron were responsible for the colouring of the green and yellow glazes. The obtained results revealed glazing technology taken from Byzantine tradition.
Two meta-heuristics for solving the multi-vehicle multi-covering tour problem with a constraint on the number of vertices
Authors: Kammoun Manel , Derbel Houda , Jarboui Bassem
Published: June 2020

In this work we deal with a generalized variant of the multi-vehicle covering tour problem (m-CTP). The m-CTP consists of minimizing the total routing cost and satisfying the entire demand of all customers, without the restriction of visiting them all, so that each customer not included in any route is covered. In the m-CTP, only a subset of customers is visited to fulfil the total demand, but a restriction is put on the length of each route and the number of vertices that it contains. This paper tackles a generalized variant of the m-CTP, called the multi-vehicle multi-covering Tour Problem (mm-CTP), where a vertex must be covered several times instead of once. We study a particular case of the mm-CTP considering only the restriction on the number of vertices in each route and relaxing the constraint on the length (mm-CTP-p). A hybrid metaheuristic is developet by combining Genetic Algorithm (GA), Variable Neighborhood Descent method (VND), and a General Variable Neighborhood Search algorithm (GVNS) to solve the problem. Computational experiments show that our approaches are competitive with the Evolutionary Local Search (ELS) and Genetic Algorithm (GA), the methods proposed in the literature.
A review on information systems engineering using vsat networks and their development directions
Authors: Wilk-Jakubowski Jacek
Published: June 2020

Modern satellite VSAT networks can be applied not only to provide satellite
radio and television broadcasting, but also to other domains, such as a
two-way Internet access. For this objective it has become necessary to
develop appropriate standards and data transmission techniques. An
unquestionable advantage of satellite systems is reception range, which
translates into possibility of building networks in almost any place on
Earth. Depending on the application, such networks can use many topologies.
The aim of the article is to review distributed information in this area, as
well as to determine the directions of development of the next generation
VSAT networks. For this purpose, the literature review has been provided,
with due regard to the IEEE Xplore digital library databases, and supported
by practical examples.
IDENTIFIKASI GEN PENYANDI PROTEIN TRANSPORT SEBAGAI KANDIDAT VAKSIN SUBUNIT TERHADAP BAKTERI Escherichia coli PENYEBAB DIARE WISATAWAN
Authors: Rasyid Burhannuddin , Karta I Wayan , Sari Ni Luh Putu Eka Kartika , Putra I Gusti Ngurah Dwija
Published: June 2020

Diare masih menjadi masalah global dengan derajat kesakitan dan kematian yang tinggi di berbagai negara. Diare dapat menyerang wisatawan yang mengunjungi objek wisata di kawasan negara berkembang, termasuk Indonesia. Salah satu penyebab diare wisatawan adalah bakteri Escherichia coli pathogen yang memiliki gen penyandi protein transport yang berperan dalam patogenesis diare.Â  Penelitian ini bertujuan untuk mengisolasi dan mengkarakterisasi gen penyandi protein transport sebagai kandidat vaksin subunit terhadap E. coli penyebab diare wisatawan.. Pengambilan sampel feses dilakukan di Ubud Care Clinic pada wisatawan yang melakukan pemeriksaan diare. Sampel dikultur pada media Eosin Metilen Blue, koloni tersangka kemudian diuji biokimia untuk mengkonfirmasi jenis bakteri yang ditemukan. Isolat positif E.coli selanjutnya disubkultur pada media Nutriet Broth, kemudian DNA E.coli diisolasi dengan GeneJET Genomic DNA Purification Kit. DNA hasil isolasi selanjutnya digunakan sebagai template reaksi PCR menggunakan pasangan primer yang mengenali gen aidA penyandi protein transport pada E.coli. Berdasarkan hasil kultur pada media EMB dan hasil uji biokimia pada media TSIA, SIM, Simon Citrat dan uji gula-gula didapatkan sebanyak 20 (59 %) dari 34 sampel feses penderita diare wisatawan positif bakteri E. coli. DNA dari 20 isolat E.coli berhasil diisolasi dengan ukuran sekitar 12000-13000 bp. Hasil PCR dari 20 sampel DNA bakteri E. coli terdapat 5 sampel positif mengandung gen aidA yang ditunjukkan dengan adanya pita DNA tunggal dengan ukuran sekitar 585 bp. Keberadaan gen aidA yang menyandi protein transport menunjukkan sifat patogenitas, yang membedakan antara E.coli pathogen dengan E.coli non-patogen
JIGSAW II COMO PROPOSTA INICIAL NO ENSINO DE MATEMÁTICA PARA ALUNOS DO PROEJA
Authors: Dias Claudio Mendes , Dias Kleber Mendes , Sasaki Daniel Gomes
Published: June 2020

Este artigo descreve o emprego da Metodologia de Aprendizagem Ativa (MAA) chamada Jigsaw II, com o suporte de recursos digitais, no curso de administração do terceiro ano do Ensino Médio na Educação de Jovens e Adultos (PROEJA) do Campus Centro do Colégio Pedro II. Seu objetivo é refletir sobre a possibilidade da sua utilização nessa modalidade de ensino e os desafios que foram gerados ao longo da sua execução no processo de ensino-aprendizagem na disciplina de matemática e na introdução do conteúdo de análise combinatória, cuja contextualização inicial se deu pela história do surgimento dos códigos de barras. Nesse período, vinte dois alunos, entre vinte e oitenta anos, participaram da dinâmica da implementação da metodologia, cuja proposta perpassou pela pesquisa, fora de sala de aula, sobre o a origem dos códigos; pelo debate a partir do processo colaborativo em grupos e por uma avaliação, na sala de informática, utilizando uma plataforma de criação de questionários. Como resultado, pode-se observar que os alunos se envolveram mais com a atividade, se mostrando mais solidários e interessados com o seu aprendizado.
Ensino das quatro operações fundamentais da matemática contextualizado: uma experiência na Ilha do Marajó
Authors: Santos Antônio Luís Parlandin dos , Silva Junior Washington Luiz Pedrosa da , Sá Pedro Franco , Conceição Elaine dos Santos da
Published: June 2020

Neste trabalho realizamos uma pesquisa sobre a resolução de problemas envolvendo quatro operações fundamentais da matemática. O estudo feito fragmentou-se através de um questionário socioeducativo que continham questões problemas de matemática formulado de forma a testar adequadamente os dados obtidos nas suposições que permearam a investigação de fatores que influenciam no desempenho dos alunos para com testes de leitura e tradução de problemas envolvendo as operações de adição, subtração, multiplicação e divisão; em decorrência houve a aplicabilidade de pré e pós-testes em meio a jogos propostos por atividades, que nos possibilitou diagnosticar as principais dificuldades encontradas pelos alunos nas resoluções de problemas com as 04 operações. A intervenção ocorreu através de jogos de cartas que consiste na leitura e tradução de problemas matemáticos tendo como propósito a melhoria das dificuldades encontradas pelos alunos na resolução de tais problemas. Os resultados em análise foram tabulados e expressos em gráficos possibilitando a verificação do número de erros e acertos dos problemas apresentados expondo assim o desempenho do aluno ao qual foi proposto. Após a análise dos dados obtidos foram propostas algumas sugestões para trabalhos futuros.
PROCESSOS DO PENSAMENTO MATEMÁTICO AVANÇADO REVELADOS NAS RESOLUÇÕES DE TAREFAS ENVOLVENDO NÚMEROS RACIONAIS
Authors: Viaro Flôres Marcia , Da Fonseca Jussara Aparecida , Bisognin Eleni
Published: June 2020

O presente trabalho tem como objetivo analisar que processos do Pensamento Matemático Avançado (PMA) são mobilizados por estudantes de um curso de formação inicial de professores de Matemática, ao realizarem tarefas exploratórias envolvendo alguns aspectos da representação de números racionais. Para isso, utilizamos uma abordagem qualitativa, pautando nossa coleta de dados na produção escrita dos participantes, a partir da proposição de tarefas relacionadas à representação decimal finita de números racionais. Como resultado, verificamos que os estudantes mobilizaram diferentes aspectos do processo de representação (mudança e tradução) do PMA, relacionados aos conceitos envolvidos. No entanto, em relação aos processos de sintetização, generalização e abstração, foram recorrentes as dificuldades apresentadas. Destacamos a importância de propor atividades que permitam aos estudantes mobilizarem os processos do PMA, principalmente no que tange ao desenvolvimento da abstração, pois esta deve ser uma das preocupações quando se trata da Matemática em um nível superior.
Синдром микроцефалии в сочетании c капиллярными мальформациями. Описание новых случаев болезни
Authors: Щагина О. А. , Семенова Н. А. , Бессонова Л. А. , Ларшина Е. А. , Бескоровайный Н. С. , Захарова Е. Ю. , Рыжкова О. П. , Поляков А. В.
Published: June 2020

Синдром микроцефалии в сочетании с капиллярными мальформациями (MICCAP) (OMIM #614261) — тяжелое моногенное заболевание с аутосомно-рецессивным типом наследования, причиной которого являются мутации гена STAMBP. На сегодняшний день в мировой литературе описано менее 20 случаев данного синдрома. В работе представлены три новых случая редкого синдрома MICCAP: на основании клинико-генеалогического анализа, методов биохимического исследования, анализа полиморфизма длин рестрикционных фрагментов, прямого автоматического секвенирования по Сенгеру установлена причина болезни у трех больных из двух неродственных семей. У двух братьев выявлен вероятно-патогенный вариант гена STAMBP c.188A>G (p.Tyr63Cys) в гомозиготном состоянии. У девочки из второй семьи причиной клинического фенотипа явилось сочетание двух наследственных заболеваний: галактоземии, обусловленной патогенными вариантами c.563A>G и c.855G>T гена GALT в компаунд-гетерозиготном состоянии и MICCAP, обусловленного вариантами c.204-5c>g и с.668_669delCA гена STAMBP, один из которых возник de novo. Оценены частота синдрома микроцефалии в сочетании с капиллярными мальформациями в России — один случай на 120 000 человек (ДИ: 1/356 724–1/62 691) и частота носительства данного синдрома — один случай на 173 человека. Исследование гена STAMBP позволяет быстро найти молекулярно-генетическую причину синдрома MICCAP. При выборе тактики диагностики и терапии в каждом конкретном случае необходимо учитывать возможность сочетания у одного больного двух редких наследственных патологий.
The Evolution of The Vampire From A Gruesome Gothic Creature To A Superstar Of Popular Culture With Reference To The Vampire Diaries Tv Series
Authors: Debnath Kunal
Published: June 2020

A vampire is a mythological-folkloric creature that is said to feed on the blood of the living. It is a Gothic uncanny figure. So judging by the outlook, a vampire is not a figure with whom we should fall in love with. But judging by the current trends in popular culture, it is not true so. Though vampires were once portrayed as gruesome and horrible, with the passage of time, change in trends and paradigm shift in popular culture, they have been naturalized as normal. They have even attained celebrity status. The evolution of the vampire from a gruesome Gothic figure to a superstar of popular culture goes through a process of three stages-

Accepting the Vampire as Normal and Natural

â€˜Celebritizingâ€™ the Vampire and Making a Star out of Him

Narrative Technique or Storytelling of Vampire Texts
Kurdish Question in the US Strategy in Iraq: Origins and New Moments
Authors:   Moscow State Linguistic University, Durre Mehmet Emin Iqbal
Published: June 2020

The paper analyzes changes in the US strategy to-ward Iraqi Kurdistan and the Kurdish question in Iraq as such after the September 2017 Iraqi Kurdish independence referendum. To this end, the author briefly recalls the stages of the formation of Wash-ington’s strategy on the Kurdish question in Iraq, describes the main elements of this strategy. After the 2017 referendum, the United States did not cur-tail its relations with Erbil, but, on the contrary, in-tensified contacts at the highest and high levels. At the same time, Washington rejected the autonomy’s claim to independence, thereby outlining the limits of rapprochement. It is concluded that the United States gradually shifted from pragmatic support for irredentism in Iraq in the 1960–80s. to more complex “selective” cooperation with a quasi-state actor in the 2010s.
The Cultural Policy of the European Union: the Museums of the European Parliament
Authors:   St. Petersburg State University, Bikerniece Anna
Published: June 2020

In recent years, the question is posed more fre-quently about a possibility to create a European idea and what elements compose it. Culture adds to the construction of the shared European identity, hav-ing a visible positive effect. Even though the cultural policy of the EU has its history evolving during sev-eral decades, only recently under the auspices of the European Parliament they began to materialize the European idea, reflected in the creation of two mu-seums – the Parlamentarium and the House of Euro-pean History. The study examines different ap-proaches to the cultural policy of the EU and anal-yses the activity of the museums as elements of this cultural policy. A comparison of the activities of the museums established under the European Parlia-ment reveals trends that will have a positive influ-ence on distribution of shared European values and narrowing the gap between the EU institutions and the citizens of the EU member states.
Epidermal Growth Factor Inhibitor-induced Cutaneous Toxicity Improves with Moisturizers
Authors: Morino Ichiko , Okuno Aika , Hirakawa Yuka , Saya Yumiko , Murakami Yumi , Furukawa Fukumi , Matsunaka Hiroshi
Published: June 2020

Although epidermal growth factor receptor (EGFR) inhibitors are one of the most effective treatment options for lung cancer, they frequently cause cutaneous toxicity that can lead to treatment discontinuation. Dryness, which is a common form of cutaneous toxicity, is usually treated using medical moisturizing agents. We aimed to investigate the treatment of cutaneous toxicity caused by EGFR inhibitors by comparing patients who used a cosmetic moisturizer with those who used conventional medical moisturizers. This study included 12 patients with lung cancer, who were receiving EGFR inhibitors and using topical medical moisturizers. The participants were assigned to a group that continued using medical moisturizers or a group that began using NOV® skin cream D. The study’s findings showed that like conventional medical moisturizers, NOV®skin cream D improved the cutaneous dryness caused by EGFR inhibitors and that it might additionally improve patients’ quality of life. Also, we obtained novel findings that NOV® skin cream D normalized keratinization, which is a component of normal skin cell differentiation impeded by EGFR inhibitors. Hence, the cosmetic moisturizer may help to prevent the discontinuation of EGFR inhibitors, thereby ensuring their continuous therapeutic effects.
Quais as potencialidades e entraves para o programa nacional de alimentação escolar em Getúlio Vargas/RS?
Authors: Breitenbach Raquel , Parizotto Jaiane
Published: June 2020

O Programa Nacional de Alimentação Escolar (PNAE) é uma política pública brasileira. Passou a dar maior incentivo para a inserção da agricultura familiar aos mercados em 2009, ao estabelecer que no mínimo 30% dos recursos federais repassados para a merenda escolar devem ser empregados na compra direta de produtos da agricultura familiar (AF). Essa pesquisa avaliou como são utilizados os recursos do PNAE e quais as potencialidades e limitações na compra de alimentos da AF em Getúlio Vargas, Rio Grande do Sul. O estudo é exploratório, com método misto (quanti e qualitativo). Foram coletados e analisados dados secundários oficiais do FNDE (período de 2011 a 2017) e realizadas entrevistas com informantes chaves do município. O município vem cumprido exemplarmente a lei, com máximo de 63% e média de 48,6% do recurso repassado pela União usados na compra direta de alimentos da AF. O que contribui para esse resultado positivo são as seguintes potencialidades: organização dos agricultores em cooperativa; comprometimento dos agricultores e da Emater do município com o programa; Conselho de Alimentação Escolar (CAE) eficiente. Como limitações destaca-se: burocracia; baixo planejamento e diversidade de alimentos. O PNAE em Getúlio Vargas tem contribuído na garantia da segurança alimentar dos estudantes, fornecendo alimentos em quantidade e qualidade adequados.
Palavras-chave: Agricultura Familiar. PNAE. Segurança Alimentar. Alimentação Escolar. Desenvolvimento Rural.
Dualismo cartesiano
Authors: Souza Felini de
Published: June 2020

Res Cogitans e Res Extensa compõem os principais pilares da filosofia de René Descartes. O dualismo cartesiano e suas implicações de união substancial e ao mesmo tempo distinção entre corpo e alma provocam diferentes problemáticas no que se refere a compreensão desta que seria uma ideia “confusa e obscura” de René Descartes. A proposta deste trabalho é por meio da prova da existência da res cogitans e da res extensa traçar o caminho seguido por René Descartes ao estabelecer uma relação entre as duas substâncias, conferindo a elas diferentes atributos por meio dos quais são concebidas. Elementos fundamentais da filosofia racionalista de Descartes, como a dúvida com relação aos dados proveniente dos órgãos dos sentidos, ganham importância ao concebermos e provarmos a existência da alma e do corpo. Com o exemplo do piloto em seu navio, o filósofo francês, diferencia-se de Platão, não considerando o corpo um mero veículo da alma, mas estabelecendo uma relação estreita, como uma mistura de duas substâncias completas. No mais, conclui-se que a discussão acerca do dualismo cartesiano se trata de relacionar corpo e alma como um amalgama único, substâncias unidas, porém distintas que são tomados como a base de todo um sistema filosófico por constituir os seres humanos.
OPTIMIZACIJA RASHLADNOG POSTROJENJA PRIMENOM REGULACIJE POTISNOG PRITISKA RASHLADNOG KOMPRESORA
Authors: Kovčić Damir
Published: June 2020

Rashladna postrojenja su veliki potro­šači električne energije i njihova optimizacija je ključna u pogledu smanjenja potrošnje električne energije. Ovaj rad se bazira na primeru optimizacije postojenja u okviru pivare. Na osnovu izračunatih rashladnih potreba i stvar­ne potrošnje energije u jednoj kalendarskoj godini izra­čunata je potencijalna ušteda ukoliko se postrojenje vodi pomoću vlažnog termometra umesto dosadašnjim ručno podešenim zadatim potisnim pritiskom. Ovim načinom upravljanja radom postrojenja moguće je ostvariti uštede od približno 7 %.
PREDLOG REŠENJA POSLOVNO-INFORMACIONOG SISTEMA ZA PRODAJU KARATA ZA DOGAĐAJE U DVORANAMA
Authors: Bogovac Nikša
Published: June 2020

U okviru ovog rada izvršen je razvoj poslovno-informacionog sistema za prodaju karata za događaje u dvoranama čija je namena da olakša i ubrza proces poslovanja kompanije koja se bavi pružanjem usluga prodaje karata. Prikazan je postupak implemen­tacije jednog takovog sistema sa integracijom plaćanja putem kreditnih kartica koristeći Microsoft .NET tehnolo­giju, MVC, AngularJS i Web API.