bluuebunny/crossref_metadata_2025 huggingface dataset:
LETTERS FROM ANASTASIA MANTSEVYCH TO MARIA VIAZMITINA
Authors: Buzko A. V.
Published: January 2020

The paper gives the review of epistolary materials for the biography of two archaeologists — Dr. Anastasia Mantsevych from Leningrad (1899—1982) and Dr. Maria Viazmitina from Kyiv (1896—1994). The documents are retained in Maria Viazmitina’s personal fund (N 34) in the Scientific Archive of the Institute of Archaeology of NASU.

Among 126 letters from A. Mantsevych to M. Viazmitina 43 are selected for fragmentary publishing. These letters show us the personality of Anastasiia Mantsevych during the time period from 1952 to 1982. Letters demonstrate what thoughts, ideas and reflections stayed behind her published papers, behind her confidence at the scientific conferences during public polemics. Letters discover a strong individual and a sensitive human being at the same time, making essential addition to her scientific portrait.

Through the letters the article also gives a review of scientific life in the State Hermitage Museum (Leningrad) and in the Institute of Archaeology (Kyiv). Correspondents point and discuss the significant museum exhibitions and sensational archaeological discoveries, share their plans about visiting main scientific conferences and congresses. Among the discussed topics are «Treasures of Tutankhamun tomb» in Leningrad (1974) and in Kyiv (1975); exhibition exchange between British Museum and State Hermitage in 1979 («The Siberian Collection of Peter I» and «The Oxus treasure»); Dr. Yuri Boltryk’s excavations of Oguz tomb in 1980, Borys Mozolevski’s and Halyna Kovpanenko’s findings of that period, Oleksandr Leskov’s findings in the tombs of the North Caucasus. There are also reflections about Professor Manolis Andronikos’ findings — the tomb of Macedonian kings near Vergina settlement in Northern Greece and Viktor Sarianidi’s findings of «Bactrian Gold» in Afghanistan.
OGLE-2013-BLG-0911Lb: A Secondary on the Brown-dwarf Planet Boundary around an M Dwarf
Authors: Miyazaki Shota , Sumi Takahiro , Bennett David P. , Udalski Andrzej , Shvartzvald Yossi , Street Rachel , Bozza Valerio , Yee Jennifer C. , Bond Ian A. , Rattenbury Nicholas , Koshimoto Naoki , Suzuki Daisuke , Fukui Akihiko , Abe F. , Bhattacharya A. , Barry R. , Donachie M. , Fujii H. , Hirao Y. , Itow Y. , Kamei Y. , Kondo I. , Li M. C. A. , Ling C. H. , Matsubara Y. , Matsuo T. , Muraki Y. , Nagakane M. , Ohnishi K. , Ranc C. , Saito T. , Sharan A. , Shibai H. , Suematsu H. , Sullivan D. J. , Tristram P. J. , Yamakawa T. , Yonehara A. ,   (MOA collaboration), Skowron J. , Poleski R. , Mróz P. , Szymański M. K. , Soszyński I. , Pietrukowicz P. , KozŁowski S. , Ulaczyk K. , Wyrzykowski Ł. ,   (OGLE collaboration), Friedmann Matan , Kaspi Shai , Maoz Dan ,   (Wise team), Albrow M. , Christie G. , DePoy D. L. , Gal-Yam A. , Gould A. , Lee C.-U. , Manulis I. , McCormick J. , Natusch T. , Ngan H. , Pogge R. W. , Porritt I. ,   ( μFUN), Tsapras Y. , Bachelet E. , Hundertmark M. P. G. , Dominik M. , Bramich D. M. , Cassan A. , Jaimes R. Figuera , Horne K. , Schmidt R. , Snodgrass C. , Wambsganss J. , Steele I. A. , Menzies J. , Mao S. ,   (RoboNet), Jørgensen U. G. , Burgdorf M. J. , Ciceri S. , Novati S. Calchi , D’Ago G. , Evans D. F. , Hinse T. C. , Kains N. , Kerins E. , Korhonen H. , Mancini L. , Popovas A. , Rabus M. , Rahvar S. , Scarpetta G. , Skottfelt J. , Southworth J. , D’Ago G. , Peixinho N. , Verma P. ,   (MiNDSTEp)
Published: January 2020

We present the analysis of the binary-lens microlensing event OGLE-2013-BLG-0911. The best-fit solutions indicate the binary mass ratio of q ≃ 0.03, which differs from that reported in Shvartzvald et al. The event suffers from the well-known close/wide degeneracy, resulting in two groups of solutions for the projected separation normalized by the Einstein radius of s ∼ 0.15 or s ∼ 7. The finite source and the parallax observations allow us to measure the lens physical parameters. The lens system is an M dwarf orbited by a massive Jupiter companion at very close (

M

host

=

0.30

−
0.06

+
0.08

M

⊙

,

M

comp

=

10.1

−
2.2

+
2.9

M

Jup

,

a

exp

=

0.40

−
0.04

+
0.05

au

) or wide (

M

host

=

0.28

−
0.08

+
0.10

M

⊙

,

M

comp

=

9.9

−
3.5

+
3.8

M

Jup

,

a

exp

=

18.0

−
3.2

+
3.2

au

) separation. Although the mass ratio is slightly above the planet-brown dwarf (BD) mass-ratio boundary of q = 0.03, which is generally used, the median physical mass of the companion is slightly below the planet-BD mass boundary of 13M
Jup. It is likely that the formation mechanisms for BDs and planets are different and the objects near the boundaries could have been formed by either mechanism. It is important to probe the distribution of such companions with masses of ∼13M
Jup in order to statistically constrain the formation theories for both BDs and massive planets. In particular, the microlensing method is able to probe the distribution around low-mass M dwarfs and even BDs, which is challenging for other exoplanet detection methods.
Radius-to-frequency Mapping and FRB Frequency Drifts
Authors: Lyutikov Maxim
Published: January 2020

We build a model of radius-to-frequency mapping in magnetospheres of neutron stars and apply it to frequency drifts observed in fast radio bursts (FRBs). We assume that an emission patch propagates along the dipolar magnetic field lines, producing coherent emission with frequency, direction, and polarization defined by the local magnetic field. The observed temporal evolution of the frequency depends on the relativistic effects of time contraction and the curvature of the magnetic field lines. The model generically produces linear scaling of the drift rate,

, matching both numerically and parametrically the rates observed in FBRs; a more complicated behavior of

is also possible. Fast rotating magnetospheres produce higher drifts rates for similar viewing parameters than the slowly rotating ones. In the case of repeaters, the same source may show variable drift patterns depending on the observing phase. We expect rotational of polarization position angle through a burst, though by smaller amount than in radio pulsars. All of these findings compare favorably with properties of FBRs, strengthening their possible loci in the magnetospheres of neutron stars.
On the Production of Polyols and Hydroxycarboxylic Acids in Interstellar Analogous Ices of Methanol
Authors: Zhu Cheng , Turner Andrew M. , Meinert Cornelia , Kaiser Ralf I.
Published: January 2020

This laboratory work studied the production of complex organic molecules in pure methanol (CH3OH) ices exposed to ionizing radiation in the form of energetic electrons. The chemical evolution of the ices during the electron irradiation at 10 K and subsequent warm-up phase to 300 K was monitored online and in situ via Fourier Transform Infrared spectrometry. Polyols and hydroxycarboxylic acids related absorptions were observed in the infrared spectra of the irradiated ices and residues at room temperature. The residues were analyzed via two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC × GC–TOFMS). Four polyols and five hydroxycarboxylic acids were detected. All of these compounds, except 1, 3-propanediol and 1, 3-butanediol, have been identified in the Murchison and Bell meteorites. The most abundant species, ethylene glycol, has also been found in the interstellar medium (ISM). Our findings suggest that other polyols and acids may also be present in methanol-rich star-forming regions. The non-detection of higher order sugars, such as those found in the ultraviolet photon-processed, 13C-methanol (13CH3OH):water (H2O):ammonia (NH3), and 13CH3OH: H2O ice mixtures, indicates that the type of radiation source or more likely the prevalent NH3 and/or H2O molecules in the ISM are critical to the abiotic formation of the bio-essential sugars. Experiments are currently being designed to elucidate the roles of each component.
Evaluation of Cytotoxic Activity Alkaloid Fractions of Zanthoxylum acanthopodium DC. Fruits
Authors: Syari Dina Maya , Rosidah Rosidah , Hasibuan Poppy Anjelisa Zaitun , Haro Ginda , Satria Denny
Published: January 2020

AIM: This study was carried out to investigate cytotoxic activity towards T47D, 4T1, MCF-7, HeLa, and Raji cells of alkaloid fractions of Zanthoxylum acanthopodium DC. fruits. Zanthoxylum acanthopodium DC.
METHODS: The fruit was extracted by maceration. The ethanol extract was fractionated with liquid-liquid extraction using n-hexane, chloroform at pH 3,7, and 9 to obtained alkaloid fractions. Cytotoxic activity for fraction chloroform at pH 7 and 9 was determined with MTT assay.
RESULTS: The IC50 of fraction chloroform at pH 7 and 9 was (92.67 ± 1.37; 71.87 ± 1.04; 159.87 ± 0.63; 123.39 ± 0.81; and 103.09 ± 0.58 µg/mLfor pH 7) and (451.29 ± 25.48; 247.18 ± 2.82; 318.46 ± 5.40; 303.96 ± 8.75; and 181.45 ± 1.35 µg/mL for pH 9) respectively.
CONCLUSION: The results reveal that alkaloid fractions at pH 7 and 9 of Zanthoxylum acanthopodium DC. Fruits have cytotoxic activity. Our further study is to isolate and assesses anticancer activity from alkaloid compounds.
Characterisation of Lactic Acid Bacteria from Dengke Naniura of Common Carp (Cyprinus carpio) with α-Glucosidase Inhibitory Activity
Authors: Hutahaean Andi Josep Nicolas , Silalahi Jansen , Suryanto Dwi , Satria Denny
Published: January 2020

BACKGROUND: Fermented foods were favourable because of its properties in enhancing the shelf life, safety, function, sensory and nutrition. There are many fermented foods tested in vitro as an α-glucosidase enzyme inhibitor. Dengke naniura is one of Indonesia’s traditional food made using fermentation.
AIM: To identify lactic acid bacteria (LAB) strains in dengke naniura and its properties in inhibiting the α-glucosidase enzyme.
METHODS: The carp were sacrificed, and soaked with rough lemon for 6 hours then spices added to it for another 1 hour. Then the isolation of LAB conducted using a serial dilution of the samples. The selected isolates of the LAB were then characterised by its morphology under the microscope, gram staining, growth at 15°C and 45°C and biochemical identification. The isolates were then tested for its inhibiting properties against the α-glucosidase enzyme.
RESULTS: The isolates (DL-109 and DL-107) were a gram-positive, nonspore-forming and non-motile rod. The Physiological and biochemical properties of the isolates confirm its LAB properties. On the test against α-glucosidase enzyme activity inhibition, isolate DL-109 LAB (4) showed dominant activity with very low IC50 compared to Acarbose (IC50 = 128.06 ppm) and DL-107 (46.32 ppm) while at the lowest dosage of 25 µg/ml DL-109 showed activity as much as 54.76%.
CONCLUSION: These findings concluded that the isolates were LAB by its properties and can be used for lowering blood glucose in term of inhibition of the α-glucosidase enzyme.
MicroRNAs as Potential Biomarkers for Childhood Epilepsy
Authors: Elnady Hala G. , Abdelmoneam Naglaa , Eissa Eman , Abdel Hamid Enas R. , Abu Zeid Dina , Abo Shanab Assem M. , Atta Hanan , Kholoussi Naglaa M.
Published: January 2020

BACKGROUND: Epilepsy is the most frequent chronic neurologic condition in childhood. Its clinical diagnosis is based on electroencephalograms (EEG) and neuroimaging techniques. MicroRNAs (miRNAs) modulate gene expression of several genes and are aberrantly expressed in several diseases.
AIM: Evaluation of using circulating miR-106b and miR-146a as diagnostic and prognostic biomarkers in children patients with epilepsy.
METHODS: Thirty epileptic children and twenty controls were enrolled in our study. They were assessed for the expression pattern of miR-106b and miR-146a in plasma using quantitative real-time PCR and determination of plasma Immunoglobulin levels.
RESULTS: MiR-146a and miR-106b expression patterns were significantly up-regulated in children patients than that in normal controls. Plasma Immunoglobulins were differentially expressed in epileptic patients in comparison with healthy controls. No correlations were found between expression levels of miRNAs (miR-146a and miR-106b) and clinical data or immunoglobulin levels in children patients with epilepsy.
CONCLUSION: Our findings suggest that up-regulated plasma miR-106b and miR-146a could be used as biomarkers for epilepsy evaluation.
First record on the biology of Sarcophaga (Bulbostyla) (Diptera, Sarcophagidae)
Authors: Brousseau Pierre-Marc , Giroux Marjolaine , Handa I. Tanya
Published: January 2020

A first breeding record for Sarcophaga (Bulbostyla) cadyi Giroux & Wheeler on the American giant millipede Narceus americanus (de Beauvois) (Spirobolida, Spirobolidae) is reported. Digital photographs of the terminalia of S. (B.) cadyi and of Sarcophaga (Bulbostyla) yorkii Parker are also provided.
Primary Arthroscopic Repair of a Traumatic Isolated Subscapularis Tendon Rupture in an Adolescent Patient
Authors: Agarwalla Avinesh , Puzzitiello Richard N. , Leong Natalie L. , Allison Bradley , Romeo Anthony A. , Forsythe Brian
Published: January 2020

Subscapularis tendon tears in the pediatric population are most commonly associated with an avulsion fracture of the lesser tuberosity. Isolated subscapularis tendon ruptures are infrequently reported. According to previous reports, the diagnosis of subscapularis tendon injuries in pediatric patients is often delayed and management is typically conservative. When operative management is indicated, an open deltopectoral approach has been used and may include concomitant open reduction and internal fixation of the lesser tuberosity. The authors report the case of a healthy 15-year-old boy who had an isolated subscapularis tendon rupture. During operative management, labral tape sutures were passed through the subscapularis tendon at the junctions of the inferior one-third and superior two-thirds, along with the superior one-third and inferior two-thirds. Both suture limbs were implanted with a 4.75-mm polyetheretherketone suture anchor within the inferior one-third and superior one-third of the lesser tuberosity footprint. A mini-open subpectoral biceps tenodesis was also performed through an axillary incision. By 8 months postoperatively, the patient exhibited normal function with full range of motion and was allowed to return to sport-related activity. [
Orthopedics
. 2020;43(3):e182–e186.]
Contributions of Historically Black Colleges and Universities to the Production of Black Nurses
Authors: Gasman Marybeth , Regla-Vargas Alejandra , Sandoval Carol , Samayoa Andrés Castro , Nguyen Thai-Huy
Published: January 2020

Background:

This article highlights the contributions made by historically Black colleges and universities (HBCUs) to the nursing profession, as well as the challenges faced by HBCUs as they make these important contributions.

Method:

This study uses a mixed-methods approach that includes historical, qualitative, and quantitative methods.

Results:

This study includes an overview of the history of the contributions of HBCUs to nursing, how HBCU nursing programs collaborate with majority institutions, strategies for retaining and supporting African American nurses within the HBCU setting, and challenges that HBCU nursing programs face.

Conclusion:

HBCUs contribute to the mobility of Black nursing students through partnerships and high-impact retention strategies.

[
J Nurs Educ
. 2020;59(2):76–82.]
Analysis of Undergraduate Nursing Students' Sensitivity to Microethical Dilemmas During Simulation
Authors: Sedgwick Monique , Yanicki Sharon , Pijl Em M.
Published: January 2020

Background:

Simulation can extend ethics education in undergraduate nursing programs beyond the cognitive domain. However, the degree to which nursing students recognize and respond to microethical dilemmas in simulation is unknown.

Method:

Using a mixed-methods convergent parallel design, 68 third- and fourth-year undergraduate nursing students completed a sensitivity questionnaire. Twelve students also participated in an interview. Data were compared to create meaning.

Results:

Many students reported having a high level of ethical sensitivity toward microethical dilemmas during simulation. However, some students expressed uncertainty in their ability to identify microethical dilemmas during nurse–patient interactions. Students also reported limited confidence in being able to transfer their ethical knowledge to the practice setting.

Conclusion:

Nurse educators must be moral agents during simulated learning experiences by helping students learn what microethical dilemmas are and strategies to manage them.

[
J Nurs Educ
. 2020;59(2):88–92.]
Determining Postgraduation Readiness to Take the NCLEX-RN
®
Authors: Monroe Heidi E. , Dunemn Kathleen
Published: January 2020

Background:

This study examined the variables of gender, age, previous degree, first-generation college, type of nursing program, grade point average (GPA), amount of postgraduation recommended preparation completed, average score on recommended preparation examinations, the score on a postgraduation readiness examination, and the NCLEX-RN
®
outcome.

Method:

An exploratory field study approach was used to explore relationships among variables. The study was retrospective and longitudinal with quantitative data collected and analyzed and explored further by interviews.

Results:

A postgraduation readiness examination was found to accurately predict the NCLEX-RN outcome. Correlations were found between the readiness examination score and gender, first-generation college, GPA, amount of recommended preparation completed, and average score on recommended preparation tests. Anxiety was the common theme for the outliers.

Conclusion:

This study provided rich data about postgraduation readiness to take the NCLEX-RN examination and lays the groundwork for further research on postgraduation variables associated with NCLEX-RN success.

[
J Nurs Educ.
2020;59(2):101–106.]
Development and Implementation of Unfolding Pediatric Simulations
Authors: Sanders Mary Kathryn (Katie) , Barr Jessica L. , Goldstein Leigh A.
Published: January 2020

Background:

Inpatient pediatric clinical placements for undergraduate nursing students can present a challenge, given the limited number of pediatric hospitals and growing demand for clinical placements. Pediatric clinical learning experiences are also impacted by increasing restrictions in patient care and variations in disease patterns. Subsequently, unfolding simulation scenarios were developed as a critical component of undergraduate pediatric rotations.

Method:

The literature was searched to determine the top admitting diagnoses for pediatric admissions. Unfolding pediatric simulations were developed and implemented to replace clinical hours and standardize pediatric clinical experiences for common diseases.

Results:

Five unfolding simulations were developed over a 2-year period. By the end of that period, 36.5% of traditional clinical hours had been replaced. Student clinical readiness indicators demonstrated increases in critical thinking and preparedness.

Conclusion:

Unfolding pediatric clinical simulations are a useful alternative to traditional clinical placement, and they can provide consistent exposure to common pediatric conditions.

[
J Nurs Educ.
2020;59(2):107–110.]
Escape the Generational Gap: A Cardiovascular Escape Room for Nursing Education
Authors: Morrell Briyana L.M. , Eukel Heidi N.
Published: January 2020

Background:

Generation Z college students often prefer individualized, immersive learning experiences. Faculty designed an educational escape room to engage nursing students and improve knowledge in cardiovascular critical care.

Method:

This study evaluated the educational innovation's impact on changes in knowledge and perceptions of the educational innovation with a pre- and postknowledge assessment and a validated perception survey. Students discussed their experiences and reflections in a focus group.

Results:

Pre- and postknowledge assessment scores showed statistically significant improvements in knowledge (
p
< .05). Student perceptions were statistically significantly higher than the mean value for the evaluation scale (
p
< .001). Analysis of focus group transcriptions revealed four themes: Logistics of the Learning Activity, Cognitive Learning, Team Learning, and Professional Practice Skills.

Conclusion:

The cardiovascular escape room increased student knowledge and was positively received by students. The educational innovation encouraged student engagement in learning, content application, peer communication, and nursing practice skills.

[
J Nurs Educ
. 2020;59(2):111–115.]
Primary Neuroendocrine Tumor of the Thymus: Radiological and Pathological Correlation
Authors: Berman Kelsey Lauren , Kirsch Jacobo , Bejarano Pablo , Drexler Ian , Martinez Felipe
Published: January 2020

Primary neuroendocrine tumors of the thymus are extremely rare. In this report, we describe a case of a 69 year-old man with an intermediate grade thymic neuroendocrine tumor. The radiologic and histopathologic features of thymic neuroendocrine tumors are discussed with reference to relevant literature.
Nature-Based Tourism
Authors: Filipe Sandra , Barbosa Belem , Santos Claudia Amaral
Published: January 2020

This chapter is based on consumer behavior theories and analyses consumers' perspectives about camping as a tourism alternative. It explores motivations and several relevant factors that influence the attitudes and behaviors of tourists regarding camping activities. The methodology was qualitative and used focus groups as a data collection tool. A content and thematic analysis was adopted as data mining technique. Results provide empirical support to the influence of subjective norms, relevant others' preference for camping, and sustainable consumer profile on attitudes toward camping which influence camping intention. Moreover, camping intention, motivations, relevant others' preference for camping, perceived control, and past experience affect camping behavior. Overall, this chapter shows that consumer behavior theories and models provide very interesting cues on campers' decision process, offering alternative and complementing views to the extant literature, namely to the studies using the popular push-pull approach.
Sustainability of Tourism Development in Rural and Mountain Areas in Eastern Serbia
Authors: Snezana Stetic , Trišić Igor , Nedelcu Adrian
Published: January 2020

The most attractive tourist destinations are those that have preserved natural and geographical environment, protected nature and anthropogenic tourist motives attracting domestic and foreign tourists. Very often rural and mountainous areas in Serbia have been neglected, without developmental perspectives. Sustainable tourism development in these areas represents conditionality for the use of tourism areas, so that they are not destroyed in such a way that future generations cannot use them. Destinations that have the capability to offer such tourism resources are able to be competitors in the tourism market. The significance of tourism development for rural and mountainous parts of Serbia is extremely high given that world tourism trends are oriented towards such destinations. It is about poorly developed areas. This chapter aims at understanding the potential of mountains and rural parts of Eastern Serbia and their inclusion into the tourism offer, using the long-term concept of sustainable development of this part of Serbia.
Critical Reflections on Pro-Poor Tourism and Local Communities` Participation at Grass-Roots Level
Authors: Zhou Zibanai
Published: January 2020

This chapter investigated the extent to which pro-poor tourism benefits are trickling down to the most deserving people in Chimanimani district, Zimbabwe. This chapter critically reflects on pro-poor tourism construct, community tourism development models, community participation and involvement, tourism benefit sharing scheme, and community livelihood in the context of a rural community. A questionnaire survey and focus group discussions were used to collect data. Embedded in the neoliberal and post-modernist perspectives, the chapter established huge potential for the Chimanimani community to benefit from pro-poor tourism. There is even more scope to enhance tourism benefits if the community`s tourism model, extent of participation, empowerment, and tourism benefits sharing scheme are recalibrated.
Outlook Change From Print to E-Resources
Authors: Binu P. C.
Published: January 2020

Electronic information resources in libraries have made remarkable changes in the users' perceptions towards print resources. A survey among 421 respondents in six state universities in Kerala reveals that the use of e-resources is considered as an advantage and it benefits the academic community. While analyzing the use of e-resources compared to the print resources, the statement 'E-resources affect the reading habit so it is not be encouraged' is rejected because it is not an advantage. All 12 hypotheses set for ‘benefits of electronic resources for accessing scholarly information' are accepted because all the regulatory constructs have significant influence on benefit of e-resources.
Mechanical Behaviour of Carbon Nanotubes
Authors: Vuono Danilo
Published: January 2020

Mechanical properties of carbon nanotubes (CNTs) are very interesting for the nanocomposite field. The possibility to use these nanomaterials as fibers in polymeric matrix is one of the most important applications of the last years. This study recognised the mechanical properties of CNTs and the obtained composites with polymeric matrix. The second part of chapter presents a short characterisation of an epoxy-CNTs-based composite. This study verified the hypothesis made concerning a different tensile strength of these materials as a function of presence of structure defects.
Preparation and Application of Polymer-Metal Oxide Nanocomposites in Wastewater Treatment
Authors: Shikuku Victor Odhiambo , Nyairo Wilfrida N.
Published: January 2020

The search for efficient and sustainable wastewater treatment technologies is a subject of continuing research. This is due to the emergence of new classes of water contaminants that are recalcitrant to the conventional wastewater treatment technologies and the stringent allowable limits for contaminant levels set by environmental management authorities. The chapter discusses the developments in synthesis methods and application of polymer-metal oxides as emerging facile materials for wastewater treatment. The varying uses of polymer-metal oxides for different processes in water treatment under varying operational conditions and their performance for different pollutants are critically analyzed. Their strengths and inherent limitations are also highlighted. The chapter demonstrates that polymer-metal oxides are facile low-cost and efficient materials and can be integrated in wastewater and drinking water treatment systems.
Nanocomposites for Space Applications
Authors: Vargas-Bernal Rafael , Tecpoyotl-Torres Margarita
Published: January 2020

A review on the advances achieved in the last 25 years in the development of hybrid nanocomposites based on polymer matrix for aerospace applications is presented here. The chapter analyzes the state-of-the-art strategies used in the design of materials that support the different conditions of the space environment. These materials are aimed primarily at structural applications, electromagnetic interference shielding, self-sensing, and self-healing, although they are not restricted to these applications. The introduction of metallic, ceramic, carbon-based nanomaterials such as carbon nanotubes and graphene, as well as two-dimensional materials have been used with a successful impact. Despite the significant advances that have been reached, much work must be done to achieve complete reliability for all properties required to protect the systems against the hazardous conditions found in space. Therefore, futuristic visions of the actions that must be carried out are raised in this chapter.
Detection of Network Attacks With Artificial Immune System
Authors: Saruhan-Ozdag Feyzan , Yiltas-Kaplan Derya , Ensari Tolga
Published: January 2020

Intrusion detection systems are one of the most important tools used against the threats to network security in ever-evolving network structures. Along with evolving technology, it has become a necessity to design powerful intrusion detection systems and integrate them into network systems. The main purpose of this research is to develop a new method by using different techniques together to increase the attack detection rates. Negative selection algorithm, a type of artificial immune system algorithms, is used and improved at the stage of detector generation. In phase of the preparation of the data, information gain is used as feature selection and principal component analysis is used as dimensionality reduction method. The first method is the random detector generation and the other one is the method developed by combining the information gain, principal component analysis, and genetic algorithm. The methods were tested using the KDD CUP 99 data set. Different performance values are measured, and the results are compared with different machine learning algorithms.
Engaging Marginalized Students in Online Courses
Authors: Reinking Anni
Published: January 2020

Online courses are growing exponentially within the field of higher education. However, the variability of engagement, planning, and learning is wide between and among faculty members. Therefore, addressing the issue of wide variability and unclear practices when implementing online courses can be met through upfront planning, including intentionality, and the continuous contact needed for engaging students in online courses is important. Through purposeful planning and responses to questions, instructors can create the illusion of continuous contact for learners to feel heard and valued, which again creates an environment of higher student motivation. Included in the continuous contact is the strategy of providing clear structures to the course in a mutually respectful manner through video and emailed communication. Overall, when courses are designed intentionally, learners will feel valued and have more motivation to engage and learn the material.
Enhancing Student Engagement Online
Authors: Reiter Paula , Tatlock Julie C.
Published: January 2020

Online instruction must go beyond what has become traditional to create meaningful ways for students to actively engage with one another in online environments. This chapter will explore creative assignments that build upon old technologies like discussion forums but transform them with innovative pedagogy. The authors will give several assignment examples that model new ways to help students learn to learn online, for example, using RTTP character role playing in online discussions and creating interactive projects that are done asynchronously. The examples will display key aspects of curriculum design from learning objects through final student assessment.
Demystifying the Online Program Development Process
Authors: Lane Holly B. , Gonsalves Vivian , Hanson Alisa H.
Published: January 2020

The University of Florida developed a fully online, five-course sequence that culminates in a graduate certificate in dyslexia. The certificate program, created in response to a demand from teachers, prepares participants to conduct assessments and provide evidence-based intervention for K-12 students with dyslexia. This chapter provides the rationale and describes the conceptual framework for professional learning used in the development of the program. It also includes a description of the program design and development process, from inception to implementation, and presents data from an internal program evaluation.
Writing Into the Scholarship of Teaching and Learning
Authors: Meldrum Kathryn Janet , Giselsson Kristi
Published: January 2020

The Scholarship of Teaching and Learning (SoTL) has been suggested as an ideal vehicle for engaging faculty with professional development for teaching in higher education. However, previous authors have identified that faculty find writing about SoTL difficult. The aim of this chapter is to support educational developers (EDs) to collaborate with faculty to support writing. Two theoretical frameworks to support collaboration are proposed: the first, the Knowledge Transforming Model of Writing, to assist with the process of writing; the second, an adaptation of Brigugilio's working in the third space framework to support collaboration. The authors utilise both frameworks to reflect on their own SoTL collaboration and subsequently pose questions to support faculty and EDs to do the same. Ultimately, it is proposed that collaboration not only enhances the practices of faculty and EDs but improves what should be an important priority for the wider academy: the learning outcomes of students.
Attention as the Base of the Development of Learning Supported by UXD Technologies
Authors: Collazos Samirna , Mazabuel Bayron Mauricio
Published: January 2020

This chapter was intended to emphasize the need of user-centered technology for the current generation of learners: “Multipotentielites.” The scenario suggests that fostering attention in Multipotentialites is required for effective learning being empathy and emotions the key to achieve it. Important concepts such as user experience design (UXD) and learning experience design (LXD) where analyzed here as pivotal aspects to envision both new educational/learning processes and the environments/technologies that support them. Under this context, the chapter summarized several perceptions from experts by highlighting those Multipotentialites' qualities and skills that should be strengthen and exploited during learning processes where attention appears to be the new IQ.
Analysis of the Use of VR and Haptic Devices in the Teaching-Learning Process for Blind People
Authors: Alonso Mitsari Lucio , Medellin-Castillo Hugo I.
Published: January 2020

The inclusion of people with disabilities in society is an issue that is currently becoming relevant. This is why technology is in a constant struggle to develop tools that meet the needs of this sector of the population and with it fulfill this objective. One of these disabilities is blindness. Therefore, this chapter shows an analysis of the application of virtual reality (VR) and haptic devices as support tools in the teaching-learning of people with such disabilities through the study of various projects that have implement these technologies, obtaining the advantages and disadvantages offered by these resources. For this, an analysis is made from the point of view of accessibility that it presents as well as the approach of the user-centered design (UCD).
Virtual Course of Accessibility of the Tecnológico Nacional de México and IT Aguascalientes
Authors: Alonso Mitsari Lucio
Published: January 2020

This chapter described an analysis and those derived design improvements for an accessibility course offered by Tecnológico Nacional de México/IT Aguascalientes (ITA). The course is addressed to train professors for awareness and implementation of educational strategies that allow an accessible and inclusive learning environment. Enhancements found were oriented to makes easier teachers' tasks when generating strategies for the creation of accessible educational content. All suggestions were derived from a usability analysis of both interactive elements and the structure of the course on the on-line learning platform Moodle. The study was performed by implementing several international standards and design guides such as the traditional web content accessibility guidelines (WCAG).
Ensemble Learning via Extreme Learning Machines for Imbalanced Data
Authors: Abuassba Adnan Omer , Zhang Dezheng O. , Luo Xiong
Published: January 2020

Ensembles are known to reduce the risk of selecting the wrong model by aggregating all candidate models. Ensembles are known to be more accurate than single models. Accuracy has been identified as an important factor in explaining the success of ensembles. Several techniques have been proposed to improve ensemble accuracy. But, until now, no perfect one has been proposed. The focus of this research is on how to create accurate ensemble learning machine (ELM) in the context of classification to deal with supervised data, noisy data, imbalanced data, and semi-supervised data. To deal with mentioned issues, the authors propose a heterogeneous ELM ensemble. The proposed heterogeneous ensemble of ELMs (AELME) for classification has different ELM algorithms, including regularized ELM (RELM) and kernel ELM (KELM). The authors propose new diverse AdaBoost ensemble-based ELM (AELME) for binary and multiclass data classification to deal with the imbalanced data issue.
Student Clustering Based on Learning Behavior Data in the Intelligent Tutoring System
Authors: Šarić-Grgić Ines , Grubišić Ani , Šerić Ljiljana , Robinson Timothy J.
Published: January 2020

The idea of clustering students according to their online learning behavior has the potential of providing more adaptive scaffolding by the intelligent tutoring system itself or by a human teacher. With the aim of identifying student groups who would benefit from the same intervention in AC-ware Tutor, this research examined online learning behavior using 8 tracking variables: the total number of content pages seen in the learning process; the total number of concepts; the total online score; the total time spent online; the total number of logins; the stereotype after the initial test, the final stereotype, and the mean stereotype variability. The previous measures were used in a four-step analysis that consisted of data preprocessing, dimensionality reduction, the clustering, and the analysis of a posttest performance on a content proficiency exam. The results were also used to construct the decision tree in order to get a human-readable description of student clusters.
Design of College English Process Evaluation System Based on Data Mining Technology and Internet of Things
Authors: Lou Hongli
Published: January 2020

This article proposes a new idea for the current situation of procedural evaluation of college English based on Internet of Things. The Internet of Things is used to obtain the intelligent data to enhance the teaching flexibility. The data generated during the process of procedural evaluation is carefully analyzed through data mining to infer whether the teacher's procedural evaluation in English teaching can be satisfied.
Data Mining in Programs
Authors: Wang TianTian , Wang KeChao , Su XiaoHong , Liu Lin
Published: January 2020

Software exists in various control systems, such as security-critical systems and so on. Existing program clustering methods are limited in identifying functional equivalent programs with different syntactic representations. To solve this problem, firstly, a clustering method based on structured metric vectors was proposed to quickly identify structurally similar programs from a large number of existing programs. Next, a clustering method based on similar execution value sequences was proposed, to accurately identify the functional equivalent programs with code variations. This approach has been applied in automatic program repair, to identify sample programs from a large pool of template programs. The average purity value is 0.95576 and the average entropy is 0.15497. This means that the clustering partition is consistent with the expected partition.
Framework for Developing a Banking Performance Dashboard
Authors: Tantipisut Panchana , Yenradee Pisal
Published: January 2020

This article creates a framework for conceptually designing a performance dashboard for banks. It provides guidelines for developing such a framework for banks and other organizations with similar characteristics. A three-step approach for developing the dashboard is proposed. The first step is to determine the ideal characteristics of an effective performance dashboard using an extensive literature search and expert opinions of TMB bank executives. Second, the current performance reporting system is analyzed using a simplified “Delphi” method to identify discrepancies from the ideal characteristics. Third, some missing elements are identified, and recommendations are provided to enhance the current performance reporting systems, to be an effective performance dashboard. The proposed ideal characteristics and the simplified “Delphi” method are effective to identify missing elements. Moreover, a working team comprised of academicians and bank executives can provide acceptable recommendations to improve the current performance reporting system, to become an effective performance dashboard.
Algumas Aplicações Físicas da Integral de Linha
Authors: Nascimento Luciano
Published: January 2020

Este artigo apresenta as principais ferramentas matemáticas na resolução de diversos problemas em nível de física matemática. Em matemática, uma integral de linha ou integral curvilínea é uma função sobre uma curva C suave e integrável. Relativamente, o ensino do cálculo de integral de linhas de curvas é diretamente influenciado por ação de campos vetoriais. Desta forma, as integrais de linhas destes campos vetoriais, de principio conservativos ou não são bem contextualizados fisicamente do ponto de vista da Mecânica Clássica a exemplo do trabalho realizado por uma força variável de onde se obtém de forma direta o Teorema do Trabalho-Energia Cinética. O objetivo deste estudo, acerca da integral de linha é aplicação direta de seu formalismo matemático na física geral. Neste, sentido serão mostradas aplicações da integral de linha de um campo vetorial e o cálculo do trabalho no sistema PV sendo claramente um processo isotérmico, no ciclo de um motor com cilindro com combustão em nível termodinâmico. Além disso, será possível fazer algumas aplicações, utilizando o Teorema de Stokes e Gauss para obtenção das futuras Equações de Maxwell da forma integral para a forma diferencial.
Abordagem Manual e Computacional do "Stringer and Panel Method" para Análise e Dimensionamento de Paredes em Concreto Estrutural
Authors: Souza Rafael Alves de , Palharini Junior Dionisio
Published: January 2020

Nas últimas décadas, o cálculo de estruturas em concreto estrutural foi profundamente beneficiado pelo aumento da capacidade de processamento dos microcomputadores e, estruturas que no passado eram impossíveis de serem analisadas manualmente, hoje já são calculadas computacionalmente em poucas horas e até mesmo minutos. Com os benefícios trazidos pela era computacional, observa-se que o cálculo manual vem sendo deixado de lado, o que por sua vez pode representar uma grande imprudência. Acidentes estruturais ocorridos nos últimos anos têm demonstrado que verificações manuais simples seriam suficientes para evitar sinistros ocorridos com estruturas inteiramente dimensionadas e detalhadas com o auxílio de computadores e softwares específicos, revelando que o cálculo computacional quando conduzido por engenheiros pouco afetos a verificações manuais pode ser extremamente perigoso. É certo que, com o avanço dos métodos computacionais, aumentou-se também a complexidade das estruturas, de maneira que em muitos casos tornou-se difícil recorrer a verificações manuais que possam certificar a qualidade dos resultados numéricos. Nesse contexto, o presente artigo tem por objetivo apresentar uma abordagem manual do "Stringer and Panel Method", demonstrando que a referida ferramenta pode ser bastante eficaz nos procedimentos de análise e dimensionamento de paredes em concreto estrutural. Finalmente, exemplos são apresentados e validados com o auxílio de análises não-lineares conduzidas com o programa ATENA2D, demonstrando que as abordagens manuais e computacionais sempre devem ser complementares e nunca isoladas.
PROCESSO DE BENEFICIAMENTO DE REJEITOS DE MINÉRIO DE FERRO POR MEIO DE FLOTAÇÃO EM DIFERENTES CONCENTRAÇÕES
Authors: Freitas Samuel de Oliveira , Amaral Igor Brumano Coelho , Barbosa dos Reis Arlete
Published: January 2020

A Usina Hidrelétrica de Risoleta Neves (Candonga) recebeu grande quantidade do rejeito da barragem do Fundão em Bento Rodrigues, distrito de Mariana-MG, onde operava a mineradora Samarco. O presente trabalho tem por objetivo, estudar o beneficiamento desses rejeitos a partir do processo de flotação reversa de minério de ferro em três diferentes concentrações de sólido, 25, 37,5 e 50% m/m. Esse processo consiste na separação de minério, nesse caso, a separação dos minérios de sílica e de ferro. Com a concentração de melhor rendimento foram feitas duas análises com as porções flotada e não flotada: granulométrica e difração por raios-X, para confirmar a eficiência do processo para esse rejeito. Nos resultados o flotado apresentou 88% composto por quartzo, e o não flotado apresentou, em comparação com o flotado, maior concentração de ferro, a caulinita e a goethita apresentaram os melhores resultados do material analisado. Dessa forma, conclui-se que o processo de flotação foi eficiente para a concentração dos minerais em questão, assim, outros estudos podem ser realizados para convertê-los em bens materiais de maior valor.
FERMENTATION OF GREEN OLIVES USING STARTER CULTURE AND QUANTITATIVE DESCRIPTIVE ANALYSIS
Authors: Rosa Andréia Dalla , Rigo Elisandra , Backes Geciane Toniazzo , Silveira Sheila Mello da , Valduga Eunice , Cansian Rogério Luis , Steffens Clarice
Published: January 2020

Este trabalho tem como objetivo avaliar as características sensoriais, utilizando a análise descritiva quantitativa (QDA), de diferentes formulações de azeitonas verdes fermentadas por 120 dias com Lactobacillus plantarum ATCC 8014 ou culturas espontâneas (microbiota indígena). A fermentação foi realizada com solução salina em diferentes concentrações de sal (4 a 12%) e sacarose (0,1 a 0,7%). Foram avaliadas as análises químicas da solução de salmoura (pH, ácido lático e cloretos) e microbiológicas das azeitonas fermentadas. Os atributos organolépticos das azeitonas fermentadas foram avaliados por painel sensorial treinado em relação aos atributos visual, olfativo, cinestésico e paladar. Os resultados mostraram que a equipe treinada conseguia se lembrar e descrever atributos consensuais. Este estudo revelou que a fermentação de azeitonas com cultura espontânea com sacarose a 0,7% e NaCl a 12% apresentou os escores mais altos em termos de aroma, odor, crocância e menores escores no sabor amargo.
USO DE INTERFACE COESIVA EM SIMULAÇÕES NUMÉRICAS DE VIGAS REFORÇADAS AO CISALHAMENTO COM PRFC
Authors: Maicon Arcine  , Nara Villanova Menon
Published: January 2020

A pesquisa teve como objetivo avaliar os esforços que atuam na interface adesiva e no reforço de uma viga em concreto armado reforçada ao cisalhamento com compósito de fibra de carbono (PRFC), por meio de simulações numéricas. Além disso, tem o intuito de prever o descolamento desta interface. Para isso foram realizadas simulações computacionais nosoftware ABAQUS, baseadas em testes experimentais de Obaidat, Heyden e Dahlblom (2010). Na interface do reforço, foi adotado elementos coesivos para representar o adesivo químico. O tratamento dos dados foi por meio de gráficos carga x deslocamento e imagens que ilustram osoutputs do programa, como tensões, danos e deformações plásticas. Os resultados apresentaram boa concordância com os reais, o que proporcionou conclusões pertinentes as análises. Os danos no elemento coesivo foram semelhantes aos da região de descolamento experimental, o que comprova a eficiência do modelo adotado. Suas análises se mostraram complexas e exigiram grandes estudos sobre mecânica do dano e modelos numéricos. Estas contaram com a facilidade de se variar diversos parâmetros, o que proporciona estudos mais refinados e complexos. Foi possível avaliar e prever as regiões de perca de aderência, o que pode contribuir para que trabalhos futuros desenvolvam técnicas que evitem o descolamento prematuro de vigas reforçadas ao cisalhamento.