bluuebunny/crossref_metadata_2025 huggingface dataset:
Orbital Support Device Via Intranasal Approach – An Unconventional Design
Authors: Mohamed Kasim , K.S Maheshwaran
Published: July 2021

Maxilla can be considered a hexahedrium with close relationship to surrounding critical anatomic structures, and thereby invariably involved in the resection process of tumours that arise from maxillary sinus, palate, nasal cavity, orbital contents, or intro-oral mucosa.1 Maxillary defects created after tumour ablation can cause severe functional and aesthetic deficits. Orbital floor defects with displacement of the eyeball results in deformities with possible consequences of enophthalmos, diplopia and impaired visual acuity. The eyeball can become displaced either due to alteration in the position of the orbital walls caused by trauma, or due to loss of support of the orbital floor during resection of a lesion. The role of the suspensory ligament of Lockwood in maintaining the superio - inferior position of the visual apparatus is recognized. The preservation of this ligament, which acts like a hammock holding the eyeball in position, prevents any drastic downward displacement except for the small limit which the slack of the ligament allows. Surgical reconstruction of orbital floor defects is the primary treatment modality, but remains nonetheless a challenge for surgeons. Currently various types of materials such as titanium meshes, hydroxyapatite, silica gel, Teflon, Medpor and autogenous bones are used for orbital reconstruction.2,3 Prosthetic rehabilitation of maxillary surgical defects is so predictable and effective that reconstructive surgery is not indicated in most instances.4,5 Prosthetic management of defects with orbital floor resection is usually obturators with extensions to support the visual apparatus.6 In clinical situations involving the resection of the orbital floor and maxillary sinus, without the sacrifice of the floor of maxilla, no oro-antral communication is created. This eliminates the need for an obturator prosthesis. In this scenario the support for the visual apparatus will be solely dependent on surgical reconstruction. However, when dealing with invasive and progressive diseases of fungal and bacterial origin, immediate surgical reconstruction is not generally recommended till complete resolution of the disease is achieved. The potential for recurrence of tumours varies from 10 - 30 % with benign tumours and over 50 % with malignant tumours. This creates a need for long term follow up, to assess the resection margins for signs of recurrence.4
Math-heuristic to solve the airline recovery problem considering aircraft and passenger networks
Authors: Guimarães José Carlos Fontoura , Gualda Nicolau Dionísio Fares
Published: July 2021

The airline recovery problem involves aircraft, crew and passenger networks impacted by disruptions. Models to solve the problem consider one or more of these networks, on an integrated way or not. It belongs to the NP-hard class, even considering only one network. This work presents a math-heuristic to solve the problem integrating the aircraft and the passenger networks. A model to restore the aircraft network with minimum cost was also developed. These two models compose a framework which permits the airline to obtain the cost impact of including the passenger network in the recovery problem. Both models were tested with real world ROADEF instances using an Intel i7 microcomputer (16Gb of RAM) and a high-performance cluster node (HPC) with 512 GB of RAM. The microcomputer solved instances with up to 85 aircraft and 276 impacted flights in less than 30 minutes (imposed limit). The faster high-performance server reached solutions with minimum gap of 0 to 0.7% for the instances with higher number of flights. Total costs considering aircraft and passenger networks were very close to the aircraft network recovery results, showing a cost compensation which highlights the importance of solving the recovery problem integrating aircraft and passenger networks.
Pseudo-Derivative Feedback Controller for Automatic Generation Control in a Deregulated Power System with Hydrogen Energy Storage
Authors: Subramanian G. Ganesan , Padmanabhan T. Suresh , Chidambaram I.A. , Paramasivam B.
Published: July 2021

This paper is focused on design and application of Pseudo-Derivative Feedback (PDF) controller for Automatic Generation Control (AGC) of a two-area thermal reheat interconnected power system treated in deregulated condition. The proposed controller gains are tuned simultaneously using Flower Pollination Algorithm (FPA) in order to achieve the optimal transient response of the test system. The control performance of the PDF controller is compared with Proportional Integral (PI) and Proportional Integral Derivative (PID) controllers. Further to improve the AGC performance, Hydrogen Energy Storage (HES) are included in its control area. The execution of HES unit captures the underlying fall in frequency as well as the tie line control power deviations after a sudden load unsettling influence. The simulation results demonstrate that the proposed PDF controller enhance the dynamic response of the deregulated power system as compared with PI and PID contrtoller. The frequency oscillation and tie-line power deviations in the control zones are reduced and the settling time is additionally enhanced when HES unit takes an interest in the frequency regulation along with the traditional generators. Additionally, the Power System Restoration Indices (PSRI) is figured in view of system dynamic performances and the remedial measures to be taken can be decreed. These PSRI shows that the ancillary service requirement to enhances the effectiveness of physical task of the power system with the expanded transmission limit in the system. The presence of an Hydrogen Energy Storage (HES) water electrolyser coupled to a fuel cell improves significantly the control and operation of an energy system and provides good margin of stability of the grid system compared to that a system without HES unit.
A Novel Experimental Study and Analysis of Electrocoagulation Process for Textile Wastewater Treatment using Various Sensors with Integration of IoT Monitoring System
Authors: Karthikeyan M. , Vijayachitra S.
Published: July 2021

One of the basic requirements of living beings is water. Due to globalization, industries consume large amount of water and creates shortage of pure water. In addition, they pollute the existing fresh water resources. Therefore, it is essential to design an effective wastewater purification system. Electrochemical method namely, electrocoagulation paves the way for an effective wastewater purification system. This research focuses on the study and analysis of the textile wastewater purification, using electrocoagulation process. This novel experimental study and analysis was carried out using iron, aluminium and mild steel electrodes for batch, modified batch and continuous process respectively. In these electrocoagulation processes, three major parameters such as colour, turbidity and pH were sensed and monitored using IoT. Colour and Turbidity Removal efficiency were also calculated, which gives satisfying results.
The Transport System of the Far Eastern Federal District: Current State and Prospects of the Eastern Range of Railways
Authors:   Economic Research Institute FEB RAS, Bardal Anna
Published: July 2021

The subject of the research is the process of transportation by rail in the Russian Far East. The purpose of the work is to consider: the limitation of the throughput of the Eastern range of railways and the prospects for the development of the Trans-Siberian and Baikal-Amur Mainlines infrastructure. The growth in the volume of export flows of coal towards Asian countries led to a lack of carrying capacity of the railways. The quotas for the transported cargo since 2020 are actually discriminating against companies when accessing the railway infrastructure. The development of railways in the Far East lags behind the planned dates and does not correspond to the promising parameters for the development of maritime transport
Mesolevel Networks in Relational Sociology As a Theoretical Tool: Possibilities and Limits of Application
Authors:   Pacific National University, Vasilkov Evgeniy , Leontyeva Elvira ,   Pacific National University
Published: July 2021

The article proposes a theoretical framework for considering mesolevel social networks in terms of relational sociology. A methodological solution of restrictive construction strategies is offered in order to determine the boundaries among micro-, meso-, and macrolevel networks. The heuristic potential and interpretive properties of the mesolevel theory are shown, as well as its application limits in relational sociology
Renewable Energy Cost Estimation on Smart On Grid Actuator Innovation for the Development of Alternative Rural Electricity
Authors: Prasetyo Andjar
Published: July 2021

Indonesia's target for using the energy mix through Renewable Energy (RE) is 22.5 percent in 2025. The steps taken are to optimize local energy use for electricity generation and select more efficient technologies that can reduce the cost of electricity supply. One of the pioneers carried out in the city of Magelang is the Smart on Grid Actuator (SOGA) system that converts sunlight into electrical energy. This study aims to calculate and analyze estimated costs by using the sun using SOGA System innovations. The research location in the Research and Development Agency of the City of Magelang focused on cost efficiency testing based on solar energy harvesting with SOGA. The survey on the use of SOGA innovation was conducted during October 2018 to obtain primary data. The approach to the results of previous research and theoretical approaches is intended as a reference, and secondary data complete the analysis of this study. Study analysis uses the Financial and Economic Benefits Photovoltaic Grid-Tied System projection (Utility-Based Rebate Formula). As a result, the SOGA system can reduce installed electricity costs by ± 330 USD per year and can be used for alternative rural energy development.
Building a Community Adaptive Capacity Model: A Case Study of the Tanjungmas Sub-District in Semarang Municipality
Authors: Putri Intan Hapsari Surya , Setiadi Rukuh
Published: July 2021

Climate change has pushed communities to make continued adjustments in various aspects of their life in order to adapt and survive. Adaptive capacity is a key concept in understanding this context. Although a number of researches in the discipline of social sciences have examined the meanings and categories of adaptation capacity, the extent to which this knowledge is used in the field of physical geography has not been adequately studied. Most studies on adaptive capacities within this discipline are focused largely on measuring the level or status of adaptation capacity (i.e. high, medium, or low) in a given region. Moreover, these studies have typically interpreted adaptation capacity as rigid and static. Thus, it sets the same index for all adaptive capacity categories. Sometimes it provides a varied index, but it does not give adequate consideration to the actual condition influencing adaptation capacity (i.e. the characteristic of adaptation goals, actors, resources, and etc.). With a case study approach focused in Tanjungmas Sub-district, this study aims to build a conceptual model which connects overall adaptive capacity categories using qualitative methods. We interviewed 18 key persons including sub-district officers, community leaders, women associations, and other local organisation members. This model may help researchers in the area of physical geography to conceptualize adaptation capacities and to establish an index that more accurately reflects local conditions following additional brief field assessments.
Household Income Differences between Residential Distance from the Toll Road in Indonesian Suburban Areas
Authors: Ariyanda Tiara , Khoirunurrofik Khoirunurrofik
Published: July 2021

Toll roads play a significant role in regional development. Moreover, toll roads affect the behavioral patterns of the people who reside in the surrounding areas and the region's development. Toll roads improve accessibility to resources that lead to higher productivity and ultimately foster economic growth. This paper aims to examine the difference in household income levels between suburban areas before the construction of Bakauheni–Terbanggi Besar toll road in 2014 and after the toll road construction in 2017. Toll road construction is associated with society's income; the areas closer to the toll road are inclined to have higher income levels. Furthermore, the construction of a toll road creates socio-economic opportunities and improves accessibility for society. This research used an income effect model to develop transformational household changes using the Ordinary Least Square (OLS) Regression. It is discovered that there is a behavioral correlation both in and between the households that leads to shifts in the work sector, income level, health, and education. This research showed that households' income is significantly increased after toll construction. Residential distance from toll also has a strong correlation with income, which households residing closer to the toll road have earned more income than those residing farther.
Reorienting Infrastructure Development in Panggang Lake Area: Towards Agritourism
Authors: Jaya Clarrio Dimassetya
Published: July 2021

Tourism escalates the economics in many undeveloped regions. It is more effective than others because the industry creates substantial multiplier effects and stimulates the growth of the local economy. Tourism provides many potential livelihoods to build up the local community's incomes. Global trends influence the growth of tourism. Nowadays, the worlds prefer to experience high-value production of unique commodities than massive tourism product. In Panggang Lake Area, swamp buffalo personify the locality phenomenon. The buffalos successfully adapt to live in a wet swamp, and even they are a good swimmer. Since Banjar Sultanate civilization, the community farms swamp buffalos in Panggang Lake Area. The unique ability of swamp buffalo builds a potency of tourism attraction. For those reasons, The North Upstream Regency plans Panggang Lake Area to be a tourist destination. However, as the germ-plasma sources, the tourism development in Panggang Lake Area should cooperate on some local wisdom. The local community works as a buffalo farmer so that the tourism development would make several changes in the daily life structures. This study aims to find out the most fitted concept of infrastructure development towards agritourism. The importance of socio-economic and environmental factors analyzed study participants' preferences for evaluating the appropriateness of tourism development in Panggang Lake Area. The study concludes the concept of watching tourism to be the more appropriate concept of agritourism infrastructure development in Panggang Lake Area.
Validation of the Lithuanian Version of Moral Competence Test and Application of KMDD in Language Teaching / Learning Process at Vilnius University, Lithuania
Authors: Kriaučiūniene Roma , Lind Georg
Published: July 2021

The findings obtained by G. Lind using his original research instrument – the Moral Competence Test – suggest that universities lack the capacity to foster students’ moral competence development. The MCT has been translated into 39 languages, all of which have gone through the necessary validation procedure. The article reports on the MCT validation study for the 40th language, namely Lithuanian. The research sample consisted of 526 students of English/German/French languages, future foreign language teachers, in the 1 st to 4th years of study at two universities in Lithuania: the former Vilnius Pedagogical University and the Vilnius University. The majority of the respondents demonstrated low or medium level of moral competence. On the basis of this cross-sectional study (2019–2020), the MCT for Lithuanian has been successfully validated and certified. In the following article, we present and discuss all the validation criteria and revisit the theoretical background of MCT. We also argue for educating students in moral competence and evaluating the effects of moral competence promotion in academic contexts.
A LIQUIDITY STRESS-TESTING METHODOLOGY AS A COMPLEMENT TO THE BASEL III REGULATION: AN APPLICATION TO TURKEY
Authors: ÖZTÜRKER Lütfi
Published: July 2021

Basel III liquidity regulation introduced two new metrics with a focus on time horizons up to 30 days (LCR: Liquidity Coverage Ratio) and beyond one year (NSFR: Net Stable Funding Ratio) respectively. This paper bridges the horizon gap by applying a yearlong liquidity stress test to the implied cash flow data of the seven biggest Turkish banks to gauge the extent (from 1 to 365 days) to which they can withstand a country-specific liquidity crisis. At the same time, this is the first study that has revealed the survival horizons of banks after a liquidity stress test at the institutional level. Results show that all banks fail each of the eight Turkey-specific liquidity stress scenarios (with a single exception) even under various Central Bank of the Republic of Turkey (CBRT) supports while complying with both LCR and NSFR ex-ante. As such, regulators would be better off employing the framework as a complementary local tool to the global Basel III liquidity regulation in order to account for medium-term liquidity risks between 30 days and one year. And therewithal, central banks could also use the results to draw up a contingency funding plan by reconsidering their hypothetical reactions to a liquidity crisis.
PİYASA ANOMALİLERİ VE BİST-100’DE OCAK AYI ANOMALİSİNİN TEST EDİLMESİ
Authors: ÖZARSLAN SAYDAR Özlem
Published: July 2021

Etkin piyasa teorisi ve hisse fiyatlarının öngörülebilirliği 1970’li yıllardan beri tartışılmaktadır. Teori, hisse senedi fiyatlarının geçmiş dönemdeki bilgiler doğrultusunda çeşitli istatistiksel teknikler ile tahmin edilemeyeceğini savunmaktadır. Ancak, fiyatlar tahmin edilebilir ise pratikte teoriye uymayan durumlarla karşılaşılmış demektir. Buna göre bir piyasanın tahmin edilebilirliği, teoriye uymayan nedenler ya da makul olmayan varsayımlarla açıklanabiliyorsa, bu durum ‘anomali’ olarak adlandırılır. Dönemsel anomaliler, hisse senetlerinin bazı ayların, günlerin ve haftaların; diğer aylar, haftalar ve günlere göre daha yüksek getiri sağladığını açıklamaya çalışan anomali türü olup, piyasalarda en yaygın görülen anomalilerdir. Çalışmada, 2013-2018 yılları arasında gerçekleşen BİST-100 Endeksi verileri baz alınarak Ocak ayı anomalisinin varlığı araştırılmıştır.
KORONAVİRÜS COVİD-19’UN DÜNYA BORSALARI ÜZERİNE ETKİSİ VE BİST-PERAKENDE SEKTÖRÜNDEKİ HİSSE SENETLERİNİN BU SÜREÇTEKİ DAVRANIŞLARI
Authors: SOY TEMÜR Ayşe
Published: July 2021

Bu çalışmanın amacı, Covid-19 salgınının dünya finans sektörü üzerindeki etkilerini yakından görmek adına, Covid-19 vaka ve ölüm sayılarına karşı küresel borsa endekslerinin davranışları ile BIST-Perakende sektörünün fiyat davranışlarını değerlendirmektir. Bu amaçla, 17 Nisan 2020 itibariyle vaka sayısının en fazla olduğu ülkelerin temel borsa endeksleri olan S&P500, Nasdaq, IBEX35, FTSEMIB, FTSE100, DAX30, CAC40, BIST100 ve SSE100 ile BIST100-Perakende ticaret sektörüne kayıtlı hızlı tüketim ürünleri satışı gerçekleştiren ADESE, BIMAS, BIZIM, CRFSA, MGROS ve SOKM hisseleri çalışmaya dahil edilmiştir. Çalışmada, 20 Ocak 2020’den 17 Nisan 2020 tarihine kadar olan döneme ilişkin günlük veriler kullanılmıştır. Vaka ve ölüm sayıları https://www.worldometers.info/coronavirus adresinden, endeks ve hisse senedi verileri ise https://tr.investing.com/indices/ adresinden elde edilmiştir. Vaka ve ölüm sayılarının endeksler üzerindeki etkilerini ve BIST100’deki değişim ile hisse senedi fiyat değişimleri arasında doğrusal bir ilişki olup olmadığını ölçmek amacıyla regresyon analizi kullanılmıştır. Buna ek olarak; günlük endeks ve hisse senedi fiyat hareketleri grafiklerle gösterilerek yüzdesel değişim oranları hesaplanmıştır. Elde edilen sonuçlar, Covid-19’un dünya genelinde hızla yayılmaya başlamasıyla birlikte vaka ve ölüm sayılarındaki artışın borsa endeksleri ve hisse senedi fiyatlarında sert düşüşlere sebep olduğunu göstermektedir. Hükumetler tarafından alınan önlemler ve uygulanan politikalar salgının finansal piyasalar üzerindeki etkisinin azalmasında olumlu katkı sağlamıştır. Ancak, araştırma dönemi sonu itibariyle araştırma kapsamındaki borsa endekslerinden hiçbiri yükseliş trendine girmiş olmalarına rağmen henüz çalışma başlangıcı tarihindeki endeks değerine ulaşamamıştır. Hisse senedi fiyatları açısından bakıldığında ise, fiyat hareketleri incelenen altı işletmeden dördünün hisse senedi fiyatları araştırma dönemi başlangıcındaki değerinin üstündedir.
OTOREGRESIF ARBİTRAJ FİYATLAMA VE SERMAYE VARLIKLARINI FİYATLANDIRMA MODELLERİNİN KARŞILAŞTIRILMASI: TÜRKİYE’DEKİ BANKACILIK SEKTÖRÜ İÇİN BİR UYGULAMA
Authors: KUDAR Alibey
Published: July 2021

Bu çalışmada, otoregresif arbitraj fiyatlama ve otoregresif sermaye varlıklarını fiyatlama modelleri, Türkiye’deki
bankacılık sektörünün hisse senedi getirilerinin haftalık verileri kullanılarak birbiriyle kıyaslanmıştır. Bu
çerçevede 5 bankanın hisse senedi getirileri araştırılmıştır. Çalışma kapsamındaki analiz sonuçlarına göre, otoregresif
arbitraj fiyatlama modelinin ve otoregresif sermaye varlıklarını fiyatlama modelinin hisse senedi getirilerini
tahmin ederken benzer sonuçlar ürettiği sonucuna ulaşılmıştır. Ayrıca, bir banka haricinde diğer bankaların
getiri oranlarını açıklamada, birinci dereceden otoregresif değişken katsayısı her iki modelde de anlamlı
çıkmamıştır.
Corrosion and Ion Irradiation Behavior of Ceramic-Coated Nuclear Fuel Cladding
Authors: Alat Ece , Hu Jing , Wolfe Douglas E. , Motta Arthur T.
Published: July 2021

Recent concern with fuel safety in accident scenarios has motivated research into accident tolerant fuels (ATF), which are defined as fuels that could increase coping time in case of an accident. This study is an attempt to develop an ATF by improving the corrosion performance of nuclear fuel cladding during a high-temperature excursion through the application of a ceramic coating using physical vapor deposition. In this study, ceramic coatings constituted of single-layer and multi-layer TiN/TiAlN coatings with a titanium bond coat layer to improve adhesion were applied onto ZIRLO sheets using cathodic arc physical vapor deposition. The coating architecture and deposition parameters were systematically optimized to achieve good adhesion and corrosion performance, and an initial evaluation was performed for resistance to radiation damage. The coating performance was highly dependent on coating design architecture, and the best coating architecture was found to be that of eight-layer TiN/TiAlN coatings deposited with optimized parameters. The optimized coatings were corrosion tested in 360°C water for up to 90 days, showing essentially no oxygen penetration, very low weight gain, and no spallation or debonding. The samples were also examined in microscopy and X-ray diffraction after corrosion testing, and little change was observed. To evaluate the coating performance under irradiation, cross-sectional transmission electron microscopy samples of the coating were subjected to in situ ion irradiation to a dose of 20 dpa with 1 MeV Kr ions at 300°C, followed by further annealing to 800°C. Little interlayer mixing and overall damage accumulation was observed. Coating adhesion was investigated through scratch testing and post-scratched sample failure mode characterization to determine a critical load value for spallation. The coating layers are found to require a high load for debonding and spallation. The results suggest that this optimized coating system is a promising path for developing an ATF.
Quantifying Processing Map Uncertainties by Modeling the Hot-Compression Behavior of a Zr-2.5Nb Alloy
Authors: Daniel Christopher S. , Jedrasiak Patryk , Peyton Christian J. , Quinta da Fonseca João , Shercliff Hugh R. , Bradley Luke , Honniball Peter D.
Published: July 2021

Compression dilatometer tests were used to study the hot deformation response of a zirconium (Zr)-2.5% niobium (Nb) alloy over the temperature range 650°C to 850°C and strain rates of 10−2.5 s−1 to 10+1 s−1. A high number of test conditions was used (72, with every test duplicated) in order to assess how differences in data processing influence the resulting relationships among flow stress, temperature, and strain rate. Particular attention was paid to processing maps, showing strain-rate sensitivity over the processing domain, commonly cited in the field and widely used as a basis to determine optimum processing conditions. Significant variations in these maps were found to depend on the number of data points included and the fitting procedure used to smooth the data. A finite element model of the test demonstrates the order of the corrections that can be required to the flow stress and the consequent processing maps due to friction at the platen-workpiece interface and nonuniform temperature and deformation in the test piece. Changes in crystallographic texture, measured using electron-backscatter diffraction, illustrate the effect of temperature, strain, and strain rate on the deformation, phase transformation, and recrystallization mechanisms. A significant spread in response arises as a result of variation in microtexture among samples and the tendency for flow to localize, giving rise to scatter in the measurements and generating artifacts in the processing map. Although the processing map methodology is strongly affected by experimental uncertainty, a detailed analysis of the final microstructures in the test samples shows similar features to those produced during industrial-scale processing, providing insight into the deformation mechanisms in dual-phase Zr-Nb alloys.
Development of Thermokinetic Tools for Phase Transformation Studies of Zr Alloys for Both In-Service and LOCA Conditions
Authors: Toffolon-Masclet Caroline , Martinelli Laure , Desgranges Clara , Lafaye Paul , Brachet Jean-Christophe , Legendre Fabrice , Crivello Jean-Claude , Joubert Jean-Marc , Monceau Daniel
Published: July 2021

Thermodynamic and kinetic calculations are commonly used for forecasting phase transformations in multicomponent alloys as a function of composition, temperature, and time. They also turn to be very useful for new alloy design. Thus, in the framework of the qualification of existing industrial alloys and the development of new ones (chromium [Cr]-coated zirconium [Zr] alloys, for instance), a new generation of thermodynamic databases has been developed thanks to the systematic use of ab initio calculations. Indeed, density functional theory calculations are significant for the determination of formation enthalpies of stable and metastable phases. Moreover, the special quasirandom structure method is used for the prediction of face-centered cubic, body-centered cubic, and hexagonal closest packed mixing enthalpies in binary solid solutions. The resulting thermodynamic database is a very powerful tool for correctly predicting second-phase precipitate occurrence in industrial alloys and precisely calculate their volume fraction, chemical composition, and existence domain as a function of temperature. The second part of the paper deals with the development of the Ekinox-Zr numerical tool that has been linked to the Zr thermodynamic database using the OpenCalphad Application Software Interface (OCASI) interface of the OpenCalphad software (a free software for multicomponent equilibrium calculations). This tool has been developed to accurately simulate oxide growth and oxygen diffusion into the alloy during high-temperature isothermal oxidation of Zr alloys. The recent developments have been dedicated to the simulation of high-temperature transients showing a good agreement with experimental data.
Back-Calculated Indentation Stress-Strain Curves from Small Scale Testing and Verification Using Finite Element Models: Application to Nanoindentation and Micropillar Compression Study of a Heavy Ion Irradiated Zr-2.5Nb Alloy
Authors: Wang Qiang , Daymond Mark R.
Published: July 2021

The plastic properties of nonirradiated and irradiated Zr-2.5Nb pressure tube alloys were obtained from both nanoindentation and micropillar compression tests. A back-calculation model was used to calculate the plastic properties of both nonirradiated and irradiated materials based on the nanoindentation. The calculated indentation stress-strain curves were adopted as material property inputs in finite element models of nanoindentation and micropillar compression tests. The nanoindentation models using calculated properties produced good fits to the indentation load-displacement curves; the pileup behaviors simulated were also consistent with existing theories. It was found that the displacement-controlled micropillar compression test failed by localized shear damage; the micropillar model successfully predicted the shear failure behavior, but this occurred at higher stress than observed experimentally. This test is believed to be strongly affected by irradiation, the sample size, and grain boundary strength. It can, therefore, be concluded that the orientation dependence of irradiated material plastic properties, in terms of irradiation-induced changes to work hardening, can be readily studied by nanoindentation combined with the back-calculation model.
Evaluation of Neutron-Irradiated Additively Manufactured Zircaloy-2
Authors: Partezana Jonna M. , Cleary William T. , Xu Peng
Published: July 2021

Additive manufacturing (AM) is an enabling technology for novel designs and complex shapes that cannot be produced using traditional manufacturing methods. Although AM technologies can produce unique geometries that may offer substantial performance benefits, there are significant technical challenges that require resolution prior to application of AM zirconium alloy components. The objective of this exploratory study was to characterize the mechanical properties of both as-fabricated and neutron-irradiated Zircaloy-2 materials produced using laser powder bed fusion AM. Westinghouse developed additively manufactured Zircaloy-2 material that was subsequently machined into miniature tensile samples by electrical discharge machining. Tensile specimens were inserted into the Massachusetts Institute of Technology test reactor for irradiation using prototypical pressurized water reactor conditions for a planned maximum exposure of 3 dpa. Post-irradiation examinations were performed on tensile specimens with 0.9 dpa and 1.6 dpa exposures. The effects of AM processing on material properties such as hardness, tensile strength, and ductility were investigated. Comparisons between conventional Zircaloy-2 material and as-fabricated AM miniature tensile specimens were performed. Additional characterization of AM material was also completed, including microstructure, microhardness, texture, and corrosion. The limiting property for implementation of as-fabricated AM zirconium in light water reactors is corrosion. A high-temperature alpha anneal of AM Zircaloy-2 material resulted in recrystallization of the as-fabricated AM martensitic microstructure. In addition, the corrosion performance of the recrystallized AM was comparable to the corrosion of conventionally processed Zircaloy-2 plate as assessed by short-term corrosion testing. While further development is required, the potential now exists for utilizing AM zirconium components in light water reactors.
Crystal Structure of Hydride Platelets in Hot Rolled Zircaloy-2, Characterized with Synchrotron X-Ray Diffraction, S/TEM, and EELS
Authors: Badr Nima Nikpoor , Long Fei , Topping Matthew , Saidi Peyman , Persaud Suraj , Yao Zhongwen , Daymond Mark R.
Published: July 2021

In the current study, transmission synchrotron X-ray diffraction, scanning/transmission electron microscopy, and electron energy loss spectroscopy were utilized to characterize the crystal structure and strain state evolution of zirconium (Zr) hydride precipitates in hot rolled Zircaloy-2 containing ~ 200 wt-ppm hydrogen. Hydride precipitates were formed in two different cooling regimes: furnace cooled (FC) and water quenched (WQ). Following the cooling procedure, samples were aged at 200°C for 15 days to evaluate the stability of the hydride phases with time. Considerably different behaviors were observed between FC and WQ conditions. In the FC condition, hydride platelets formed with a face centered cubic structure with a contracted unit cell compared to that of the standard strain-free δ hydride. After aging for 15 days at 200°C, residual strains were partially relieved and no transformation to a new hydride phase was observed. In the WQ condition, synchrotron X-ray diffraction showed there was a coexistence of three hydride populations: γ hydride with a minute volume fraction, a slightly strained δ hydride prevalently observed in Zr grains with basal poles aligned close to the normal direction, and a third δ' hydride population that was a severely strained δ hydride with an apparent tetragonality of a = 4.709 Å and c = 4.783 Å. This severely strained phase was prevalently observed in Zr grains with basal poles aligned close to rolling/transverse directions. Nano-beam electron diffraction analysis revealed that, unlike γ hydride, δ` is not an ordered phase. Aging at 200°C for 15 days resulted in the complete disappearance of the γ phase and commencement of a gradual relaxation of δ` to δ.
Ball Classification through Object Detection using Deep Learning for Handball
Authors: Alwi Arzielah Ashiqin , Ibrahim Ahmad Najmuddin , Shapiee Muhammad Nur Aiman , Ibrahim Muhammad Ar Rahim , Mohd Razman Mohd Azraai , Khairuddin Ismail Mohd
Published: July 2021

Dynamic gameplay, fast-paced and fast-changing gameplay, where angle shooting (top and bottom corner) has the best chance of a good goal, are the main aspects of handball. When it comes to the narrow-angle area, the goalkeeper has trouble blocked the goal. Therefore, this research discusses image processing to investigate the shooting precision performance analysis to detect the ball's accuracy at high speed. In the handball goal, the participants had to complete 50 successful shots at each of the four target locations. Computer vision will then be implemented through a camera to identify the ball, followed by determining the accuracy of the ball position of floating, net tangle and farthest or smallest using object detection as the accuracy marker. The model will be trained using Deep Learning (DL)  models of YOLOv2, YOLOv3, and Faster R-CNN and the best precision models of ball detection accuracy were compared. It was found that the best performance of the accuracy of the classifier Faster R-CNN produces 99% for all ball positions.
Education problems for sustainable development in the focus of assessment of the demographic situation in the region (on the example of the Novosibirsk region of the Russian Federation)
Authors:   Novosibirsk State Pedagogical University, Ionova Natalia Vladimirovna , Shimlina Inna Vladimirovna ,   Siberian state industrial university
Published: July 2021

The main purpose of this study is to study the problems of modern education through the prism of the regional demographic situation in the context of the implementation of sustainable development. The base region is the Novosibirsk region, on the territory of which a regional education system has developed, which is characterized by a high susceptibility to innovations. The main resource that ensures effective regional development is human capital. In this regard, it is relevant to study not only the problems of education development, taking into account the implementation of sustainable development, but also the characteristics of the demographic situation as a factor of sustainable development. The article reveals the features of the problem of education development in the interests of sustainable development, provides a meaningful analysis of the SD concept, highlights the main stages of its formation, which make up SD components; education is considered as a key component of the SD concept, the main conditions of transformations in the education system are highlighted, an assessment of demographic parameters is given, according to which it is possible to predict education processes both at the regional and global levels.
Relationship of creativity in the activities of a teacher with the efficiency of learning activities of students
Authors:   Novosibirsk State Pedagogical University, Andronnikova Olga Olegovna
Published: July 2021

The importance of creativity in education is now widely recognized as an essential skill of the 21st century. This article examines the relationship of teachers ‘creativity with the style of pedagogical communication and the effectiveness of students’ learning activities. The study involved 28 teachers (including 6 men and 22 women aged 32-60 years) and 78 students, whose classes were taught by these teachers. Research methods: method of determining personal creativity E. E. Tunic; method for determining social creativity (level of creative potential) E. E. Tunic; test questionnaire “Style of pedagogical activity” А. М. Markova and A. Ya. Nikonova, analysis of documents documenting the success of their educational activities, elements of pedagogical monitoring. It was revealed that the parameters that determine the creative characteristics of the personality of teachers and their individual teaching styles are in a significant relationship. The expressiveness of the emotional-improvisational and emotional-methodological styles of teaching contributes to the manifestation of the teacher’s creative abilities, and the orientation towards the reasoning-methodological style, on the contrary, prevents the realization of these qualities. Students in whom the majority of teachers demonstrate a creative approach in pedagogical activity show higher educational results and involvement in the educational process.
Technology of the organization and experience of the pedagogical olympiad
Authors:   Novosibirsk State Pedagogical University, Malinovskaya Marina Pavlovna
Published: July 2021

The article deals with the problem of organizing and conducting a pedagogical Olympiad for students. The theoretical foundations of the organization of Olympiads in pedagogy, disclosed in the scientific literature, are presented. The purpose of the article is to determine the essential characteristics of this form of extracurricular work with students, the organizational conditions that are important for solving the problems of modern higher education. The article describes the technology of preparation and implementation of the Pedagogical Olympiad in a higher education institution focused on the training of a competent specialist: the stages of activity, the purpose and objectives, competitive tasks and the tool for their evaluation, organizational conditions. The article presents the experience of conducting such an extra-university event at the Novosibirsk State Pedagogical University. The description of the Olympiad tasks developed taking into account the competence approach and in the context of innovative technologies of teaching in higher education is given. The methodological foundations of the organization are revealed.
Effect of mortise and tenon size on compressive and tensile strength of a box connected by dovetail keys
Authors: Wang Shuo , Wu Zhi Hui , Chen Lu , Yan Sheng Zan , Xu LiJun , Guan Hao
Published: July 2021

Compressive and tensile strengths were considered for a box connected by dovetail keys under different mortise-and-tenon sizes. Poplar wood modified by melamine resin (MF modified poplar wood) was chosen as the experimental material, and the experimental study was carried out on the box using the concentrated loading method. The results showed that the ratio (T) of hole depth to slope height had a significant effect on the structural strength of the box connected by dovetail keys when other dimensional parameters were the same. When T was equal to 75%, the compression and tensile strength of the box was the highest, and the joint had better recovery and deformation ability. When T` was equal to 50%, the box strength was the worst, and the joint damage was the most serious in both types of loading. In addition, the measurement standard of the displacement was determined through preliminary experimentation. The compression quantity was 8 mm, and the stretching quantity was 5 mm. The latter experiment showed the reliability of the pre-experiment.
Comparisons of finite element models used to predict bending strength of mortise-and-tenon joints
Authors: Hu Wengang , Liu Na
Published: July 2021

This study aimed to obtain a better method for establishing a finite element model of mortise-and-tenon (M-T) joints. Three types of M-T joint finite element models, which included a whole rigid model, a tie rigid model, and a semi-rigid model, were established and compared with experimental results by predicting the bending moment capacity (BMC) of M-T joints based on the finite element method (FEM). The results showed that the semi-rigid model performed much better than the tie rigid model, followed by the whole rigid model. For the semi-rigid model, the ratios of FEM ranged from 0.85 to 1.09. For the whole rigid model and tie rigid model, the BMC of the M-T joint was overestimated. In addition, the results showed that tenon size remarkably affected the BMC and stiffness of the M-T joint, and tenon width had a greater effect on the BMC of the M-T joint than the tenon length.
How anatomical and morphological characteristics affect the flexural properties of two angiosperm species at the sapling stage
Authors: Özden Keleş Seray
Published: July 2021

The sapling stage is an important phase due to maintaining plant growth, stability, and survival over the life cycle of trees. However, there are limited investigations in the literature related to both growth and stability of different tree species. This study thus investigated how different tree species at the sapling stage showed different anatomical, morphological, and flexural traits despite being of similar age and growing under the same environmental conditions. The variation of sapling properties was determined in two deciduous tree species: common oak (Quercus robur L.) and Oriental beech (Fagus orientalis Lipsky). The results of anatomical and morphological measurements showed that the highest average values of ray length, ray width, pith radius, pith%, bark%, and node numbers were obtained in oak saplings, whereas average ring width, number of rays, and wood% were found to be higher in beech saplings. Oak also exhibited better functional stability in its saplings. The flexural properties were almost 60% greater in oak stems than beech stems. The variations in flexural properties were explained by the morphological and anatomical traits since stability was positively correlated with pith radius, pith%, and bark% and negatively correlated with the number of rays and wood%.
Optimization of process conditions for microwave-assisted flax water retting by response surface methodology and evaluation of its fiber properties
Authors: Zhao Dan , Ji Hairui , Du Renpeng , Wang Qi , Ping Wenxiang , Ge Jingping
Published: July 2021

Microwave-assistance was used to increase the degumming efficiency in flax water retting. Different pre-soaking times, microwave times, and microwave power were investigated in this study. The relationships between degumming rate and process parameters were established via response surface methodology (RSM). The optimum process parameters were a pre-soaking time of 25.5 h, a microwave time of 18.5 min, and a microwave power setting of 570 W. Under these optimal conditions, the degumming rate was 83.85% ± 1.13%, which was 1.33 times higher than that of natural hot water retting (P < 0.05). Moreover, the tensile properties and color of the resulting fibers showed that they had tensile properties similar to those of the natural hot water retting fibers. However, the color values for the natural hot water retting fibers were higher than those of the fibers treated with microwave-assisted flax water retting.
National Pediatric Experience With Virtual Interviews: Lessons Learned and Future Recommendations
Authors: Frohna John G. , Waggoner-Fountain Linda A. , Edwards Jill , Fussell Jill J. , Wueste Beth , Gigante Joseph , Vinci Robert J. , Heitkamp Nicholas M. , Neelakantan Mekala K. , Degnon Laura E. , Blankenburg Rebecca L.
Published: July 2021

The coronavirus disease 2019 pandemic significantly impacted undergraduate and graduate medical education and created challenges that prevented a traditional approach to residency and fellowship recruitment and interviews. Early in the pandemic, the pediatric education community came together to support applicants and training programs and to foster an equitable recruitment process. We describe many of our community’s innovations, including the use of virtual cafés to educate programs and highlight best practices for virtual recruitment and the use of regional webinars to highlight residency programs and provide information to applicants. Surveys of applicants and programs suggest that the virtual interview process worked well overall, with applicants and programs saving both time and money and programs maintaining a high rate of filling their positions. On the basis of this experience, we highlight the strengths and weaknesses of 3 potential models for future interview seasons. We close with a series of questions that need further investigation to create an effective and equitable recruitment process for the future.
Becoming a teacher in higher education: Creating an academic development program to catalyse doctoral students' professionalization
Authors: Misic Gorana , Rymarenko Margaryta , Dorner Helga
Published: July 2021

This paper focuses on exploring the intellectual basis for establishing an academic development program for international doctoral students in social sciences and humanities in Central Europe so as to cultivate a reflective scholarly approach to teaching early on in their academic career. The program conceptions and practices are embedded in the notion that a scholarly approach to teaching integrates the understanding and demonstration of knowledge about teaching and necessitates a continuous learning process about teaching through reflection and through conducting research on teaching in the various disciplines. In particular, taking on board the domains of teaching knowledge which derived from the kinds of reflections on teaching (cf. Kreber & Cranton, 2000; Mezirow, 1991), instructional, pedagogical and curricular knowledge and continuous reflection at the level of content, process as well as premise, are represented in an integrative manner in our overarching program principles and pedagogical strategies. As we see, professionalization of doctoral students' teaching practice in higher education (cf. Lueddeke, 2003) is particularly important in the context of enhanced faculty mobility and internationalization. Therefore, this paper aims to contribute to the literature and practice on establishing academic development programs, especially in academic environments with low institutional support for teaching and lack of formal requirements for professional development.
How to operationalise holistic academic development – The case of a Danish center for teaching and learning
Authors: Troelsen Rie
Published: July 2021

Centers for Teaching and Learning (CTLs) are at the forefront of many quality enhancement activities aimed at teaching and learning at universities and do not solely focus on supporting individual teacher in conducting quality teaching but are also playing a strategic role in the university. CTLs provide in other words holistic academic development. This article provides examples of how a CTL at the University of Southern Denmark has operationalised holistic academic development using Holt et al.’s points of leverage as a starting point. The leverage points are combined and exemplified to suggest a model for enhancing teaching quality which entails five levels; definitions, descriptions, documentation, evaluation and recognition of quality in teaching.