bluuebunny/crossref_metadata_2025 huggingface dataset:
Personalized Urination Activity Management Based on an Intelligent System Using a Wearable Device
Authors: Eun Sung-Jong , Lee Jun Young , Jung Han , Kim Khae-Hawn
Published: September 2021

Purpose: In this study, a urinary management system was established to collect and analyze urinary time and interval data detected through patient-worn smart bands, and the results of the analysis were shown through a web-based visualization to enable monitoring and appropriate feedback for urological patients.Methods: We designed a device that can recognize urination time and spacing based on patient-specific posture and consistent posture changes, and we built a urination patient management system based on this device. The order of body movements during urination was consistent in terms of time characteristics; therefore, sequential data were analyzed and urinary activity was recognized using repeated neural networks and long-term short-term memory systems. The results were implemented as a web (HTML5) service program, enabling visual support for clinical diagnostic assistance.Results: Experiments were conducted to evaluate the performance of the proposed recognition techniques. The effectiveness of smart band monitoring urination was evaluated in 30 men (average age, 28.73 years; range, 26–34 years) without urination problems. The entire experiment lasted a total of 3 days. The final accuracy of the algorithm was calculated based on urological clinical guidelines. This experiment showed a high average accuracy of 95.8%, demonstrating the soundness of the proposed algorithm.Conclusions: This urinary activity management system showed high accuracy and was applied in a clinical environment to characterize patients’ urinary patterns. As wearable devices are developed and generalized, algorithms capable of detecting certain sequential body motor patterns that reflect certain physiological behaviors can be a new methodology for studying human physiological behaviors. It is also thought that these systems will have a significant impact on diagnostic assistance for clinicians.
OPTIMIZATION OF PHENOLIC COMPOUNDS EXTRACTION FROM PURPLE BASIL LEAF BY CONVENTIONAL AND MICROWAVE ASSISTED EXTRACTION METHOD
Authors: Ozcan Basak ebru , Sagdic Osman , Karasu Salih , Ozkan Kubra , Akcicek Alican
Published: September 2021

The present study aimed to determine the optimum extraction conditions of conventional solvent extraction (CSE) and microwave-assisted extraction (MAE) techniques to obtain maximum total phenolic (TPC), total flavonoid (TFC), total anthocyanin (TAC) and antioxidant capacity (AA). Response surface methodology (RSM) and central composite design (CCD) were used to determine optimum points of CSE and MAE. Both two extraction methods, all parameters significantly affected TPC, AA, TFC and TAC (p<0.05). MAE showed higher bioactive compounds yield than that of CSE.  Optimum point for CSE and MAE was found to be 60Â°C and 30 min and 591.83 W and 2.98 min respectively. TPC, AA, TFC and TAC were obtained as 33.81mg/g, 160.27 mg/g, 11.89 mg/g and 331.01 mg/kg for CSE and 62.99 mg/g, 214.62 mg/g, 21.80 mg/g and 3462.93 mg/kg for MAE respectively. This study recommended that the MAE should be used for the extraction of PBL to increase phenolic extraction yield.
EFFECTS OF THERMAL RADIATION AND BUOYANCY FORCE ON TRANSIENT HARTMANN FLOW IN A CHANNEL WITH PERMEABLE WALLS
Authors: VERMA OM PRAKASH , Makinde O D
Published: September 2021

The combined effects of thermal radiation, buoyancy force and variable heat source on an unsteady MHD flow of a conducting fluid through a porous walled channel is theoretically investigated.  Base on some simplified assumptions, the model partial differential equations are obtained and tackled analytically using variable separable technique. Numerical solutions depicting the impact of various embedded thermophysical parameters on the fluid velocity and temperature profiles, skin friction and Nusselt number are displayed graphically and quantitatively discussed. An escalation in both skin friction and heat transfer rate is observed with a rise in fluid injectionâ€“suction at the channel walls.
ENTROPY GENERATION IN MHD FLOW THROUGH A DEFORMABLE POROUS LAYER WITH CONSTANT INJECTION/ SUCTION AT THE BOUNDARY
Authors: Das Utpal Jyoti
Published: September 2021

The present paper examines the entropy generation on MHD flow of viscous fluid over a deformable vertical porous layer with constant injection/ suction velocity at the   boundary walls of the layer. The combined phenomenon of the solid deformation and fluid movement in the porous medium are taken into consideration. The influence of relevant non-dimensional parameters on the fluid velocity, solid displacement, temperature and concentration profiles are discussed. Also, the impact of Brinkman number, volume fraction parameter and drag parameter on entropy generation and Bejan number are discussed.
MHD FLOW OF A REACTING AND RADIATING NANOLIQUID PAST AN INCLINED HEATED PERMEABLE PLATE: ANALYSIS OF ENTROPY GENERATION
Authors: Makinde Oluwole Daniel , Eegunjobi Adetayo Samuel
Published: September 2021

This paper examines the aggregate impacts of magnetic field, thermophoresis, Brownian motion, variable viscosity, chemical reaction and radiative heat flux on the thermal putrefaction and immanent irreversibility of a channelling nanoliquid film flowing along with a slanted heated permeable plate. Following Buongiorno approach, the two-phase nanoliquid nonlinear model is obtained and addressed numerically using shooting technique as well as the Runge-Kutta- Fehlberg integration scheme. Effects of various emerging parameters on the overall flow structure with heat and mass transfer characteristics including entropy generation rate and Bejan number are displayed using diagrams and discussed. It is found that the entropy generation rate lessened with an upsurge in a magnetic field but heightened with an elevation in the buoyancy forces.
ANTIMICROBIAL, ANTIOXIDANT AND CYTOTOXIC EVALUATION OF VARIOUS EXTRACTS OF IFLOGA SPICATA (FORSSK.) SCH.BIP
Authors: KHAN Y. M. , JAN S. , ULLAH F. , AWAN A. K. , MUHAMMAD N. , Rizvi Syed
Published: September 2021

The current study reveals the pharmacological and phytochemical potential of different solvent fractions of Ifloga spicata. Antimicrobial and free radical scavenging activities, DPPH (1, 1-diphenyl-2-picrylhydrazyl), hydrogen peroxide scavenging assay, and cytotoxic effects of plant samples on lymphocytes stressed with hydrogen were performed. Ifloga spicata ethyl acetate fraction markedly showed higher antibacterial potential against P. aeruginosa (ATCC 27853) and E. Coli (ATCC 25922) bacteria. While higher antifungal potential was shown by the chloroform fraction against all three different a strain A. fumigates (ATCC 204305), A. flavus (ATCC 9643) and A. niger (ATCC 16404) as compared to others fractions of sample. DPPH maximum antioxidant potential was noted for methanolic extract followed by ethyl acetate and chloroform. Similarly, hydrogen peroxide effect was significantly decreased by ethyl acetate fraction. In blood lymphocytes the raise in ROS and TBARS level due to stress given by H2O2 was also recovered by different extracts of I. spicata. The decrease level of CAT, SOD and POD was also restored
MATHEMATICAL MODELLING OF HOT AIR DRIED APPLE AND EFFECTS OF VARIETY, SHAPE AND TEMPERATURE ON DRYING BEHAVIOR AND QUALITY CHARACTERISTICS
Authors: SARI FERDA
Published: September 2021

In this study, drying kinetics and quality characteristics of apple cv. Starking, Gala and Granny Smith circles and squares were studied at two different drying temperatures, 60 Â°C and 70 Â°C.    Drying times were varied between 85-165 min. Depending on variety, shape and temperature. The falling rate period was observed and drying rate changed depending on the drying parameters. Four mathematical models were fitted to experimental data and Logarithmic model was found to be the best for all the samples. Total phenolic contents and antioxidant capacities of dried apple samples varied in the range of 4.11-8.36 mg GAE/g dry matter and   4536.43-7370.47 mmol AEAC 100/g dry matter, respectively and showed a tendency to increase or decrease after drying depending on the variety and shape interaction. Shape had also significant effect on antioxidant capacities of samples as well as the variety (p<0.05). The results of variance analysis demonstrated that there were significant differences among color values of apple samples dried at 60 ÂºC and 70 ÂºC.
INFRARED DEHYDRATION OF BLANCHED QUINCE SLICES: STUDY ON PROCESS AND MASS TRANSFER CHARACTERISTICS
Authors: Beigi Mohsen
Published: September 2021

In the present work, moisture removal characteristics of quince slices in a convective tray dryer were studied. The blanched slices (with thicknesses of 3, 5 and 7 mm) were dried at drying temperatures of 50, 60 and 70 Â°C and air flow rates of 1, 1.5 and 2 m/s. The analytical model proposed by Dincer and Dost was used to determine the mass transfer parameters. The obtained Biot numbers (0.108â€’0.293) revealed that both the internal and external resistance control the moisture diffusion within the samples. The moisture diffusivity and convective mass transfer coefficient were found to be in the ranges of 1.578Ã—10-7â€’7.331Ã—10-7 m2/s and 2.040Ã—10-5â€’3.507Ã—10-5 m/s, respectively. The activation energies for moisture diffusion and surface mass evaporation were determined to be in the ranges of 17.607 to 48.019 kJ/mol and 5.270 to 27.430 kJ/mol, respectively.
DRYING BEHAVIOR AND SOME QUALITY PARAMETERS OF POTATO FINGER CHIPS USING INFRARED RADIATION
Authors: Doymaz Ibrahim
Published: September 2021

The effect of different infrared (IR) powers on drying of potato finger chips was investigated in infrared dryer. The potato finger chips dried at 48, 50, 62, 74 and 88 W infrared powers and constant slice thickness of 7 mm. Results showed that drying characteristics of potato chips were greatly influenced by infrared power. The experimental drying data were fitted to seven thin-layer drying models. The models were compared on coefficient of determination (R2), reduced chi-square (c2) and root mean square error (RMSE) values between experimental and predicted moisture ratios.  The Midilli & Kucuk model was found to the best in predicting the drying kinetics of potato chips during infrared drying. The effective moisture diffusivity using the Fickâ€™s diffusion model varied from 1.82Ã—10-9 to 3.06Ã—10-9m2/s. It was found that the effective moisture diffusivitiy increased with increasing IR power. Activation energy was estimated by a modified Arrhenius type equation as 1.35 kW/kg. The results also showed that with increasing infrared power, rehydration capacity was decreased.
RHEOLOGY OF POWER LAW FLUID FLOW AROUND A STAGNATION POINT IN POROUS MEDIUM WITH ENERGY DISSIPATION
Authors: Dey Debasish , Mahanta Bhagyashree
Published: September 2021

An investigation on two-dimensional stagnation point flow past a stretching or shrinking surface in a porous medium with energy dissipation using power law model is carried out in this paper. By applying some similarity transformations, the governing partial differential equations are converted to non-linear ordinary differential equations. Consequently, numerical calculations of these equations are done by using MATLAB built- in bvp4c method. Impact of various parameters such as Prandtl number, permeability parameter and magnetic parameter are depicted graphically on velocity and temperature distributions. Also, the numerical values for velocity gradient and shear stress are shown in tabular form. From the analysis, it is noted that Prandtl number helps in reducing the shear stress, Also, as the power law parameter increases, a decrease in velocity is observed.
Penerapan Konsep Green Hotel di Nusa Lembongan Bali
Authors: Darmaputra Putu Gede Eka , Dianasari Dewa Ayu Lily , Kalpikawati Ida Ayu
Published: September 2021

Nusa Lembongan is currently one of the favorite tourist attractions among foreign and domestic tourists because of its pristine natural beauty. As one of the areas in Klungkung Regency, Bali Nusa Penida also provides accommodation in both star and non-star hotels, villas, bungalows, and homestays. This study aims to determine the implementation of the green hotel concept in Nusa Lembongan Bali. Data was collected by distributing questionnaires to 47 accommodations in Nusa Lembongan by means of purposive sampling. The results of the study show the following: hotel perceptions and assessments of environmental policies and actions (4.23), use of environmentally friendly products (4.39), collaboration with local communities and organizations (4.27), resource development (3.91) , solid waste treatment system (3.99), energy efficiency (3.96), efficiency and water quality (3.97).
Persepsi Pelanggan terhadap Penerapan Protokol Kesehatan dalam Upaya Meningkatkan Kualitas Pelayanan Selama Era New Normal pada Restoran di Kota Denpasar-Bali
Authors: Budiani Ni Putu Ariesta
Published: September 2021

In implementing business ethics in the New Normal Era for restaurants, it must follow established health procedures to convince customers that the business sector is in accordance with standards (safety. Therefore, it is necessary to conduct research to determine the extent to which tourism business actors, in this case the food / restaurant service business, have implemented the health protocol. Based on the Guidelines for the Implementation of Cleanliness, Health, Safety and Environmental Sustainability (CHSE) in Restaurants / Restaurants, there are 3 dimensions in implementing health protocols with 33 existing attributes related to service quality to be analyzed. Based on the assessment of 165 respondents spread across 15 restaurants (rated 4-5 star according to TrpAdvisor) in Denpasar, it is concluded that the overall customer perception of the application of health protocols in an effort to improve service quality during the New Normal era, received the average value of 3.34 which in this case is included in the quite good category. This shows that the 15 restaurants representing well-known restaurants in Denpasar have not implemented health protocols optimally. Thus it is suggested that the government immediately hold a consistent and serious socialization and counseling to restaurants.
Predict App Rank on Google Play Using the Random Forest Method
Authors: Khaliq Abdul , Hariyanto Eko , Batubara Supina
Published: September 2021

Application developers and users are the keys to the market impact on application development. In application development, developers need to predict applications in the market accurately, accurate prediction results are very important in showing user ratings that affect the success of an application. Ratings are given by users to judge that the application is good or not. The higher the rating given by the user, it means that the user likes the application and can be a benchmark for other users to download the application. It is undeniable that there are so many apps available on the google play store, it is impossible for users to select one by one app on the google play store. Therefore, a rating prediction system is needed to determine the right application based on the rating given by the user to an application. Predictions will be made using the random forest algorithm as the method used to predict application ratings. This study using the Google Play Store dataset. This dataset has 10840 rows and 13 attributes. The results of this study can be seen from the use of the random forest algorithm with an average accuracy of 93.8%.

Keywords: Google Play Store, Rating, Prediction, Random Forest.
Lesser Known Indian Women Educators and Reformers
Authors: Adhikari Anasuya , Saha Birbal
Published: September 2021

India can presently be called a leading nation while considering the field of women education. But the scenario was not always the same. Women had to struggle to reach this summit. The path was not easy and smooth. Interestingly enough, eminent women themselves played a crucial role in not only establishing themselves, but also in promoting women’s education, health, shelter homes, care for the orphans etc. They established schools and other institutes to promote education to not only the women but also to the weaker section of the society and fight against the injustice. This paper is an attempt to remember few of these eminent women, like Tarabai Modak, Durgabai Deshmukh, Anutai Wagh, Pandita Ramabai, Pandita Brahmacharini Chandbai, Nawab Begum Sultan Kaikhusrau Jahan, who were path breakers in their attempt to transcend the homely domain and set a new milestone. This paper also attempts to credit these noteworthy women for their extraordinary contribution to social services.

Keywords: Women Educators, Women Reformers, Female Education, Indian Women.
Digital Marketing Implementation Effectiveness Analysis in Improving the Marketing Performance of Small and Medium Enterprises Managed by LINKS USU
Authors: Al Zuhri Ikhsan , Sinulingga Sukaria , . Iskandarini
Published: September 2021

Marketing performance is a measure of achievement and marketing process activity as a whole from a company. Marketing performance can also be seen as a concept that is used by a product by a company. There are many factors that affect the marketing performance, among them is digital marketing. This research is a descriptive correlational analysis with quantitative research approach. This method is intended to examine to what extent the variation of one factor in relation to other variation of another factor (Rakhmat, 2004). Correlation Method is intended to analyze the effectiveness between digital marketing implementation towards marketing performance of Small to Medium Enterprises (SME) in LINKS USU. The research’s populations are every Small to Medium Enterprises owner in Medan City Managed by Innovation and Business Technology Incubation Department North Sumatra University that have already used digital marketing technology for the past year.

Keywords: Effectiveness, Digital Marketing, Marketing Performance, SME.
Effectiveness of Structured Teaching Programme on Knowledge of Staff Nurses Regarding Coronary Angiogram at a Selected Hospital, Bangalore
Authors: George Preethi , A K Umadevi
Published: September 2021

The aim of the study was to assess the effectiveness of Structured Teaching Programme (STP) on knowledge of staff nurses regarding coronary angiogram. The study involved one group pre-test and post-test using pre-experimental design, with non-probability sampling technique in which purposive sampling method was used. Sixty staff nurses working at Kempegowda Institute of Health Science and Research Center were taken as samples (n=60) and requested to mark the structured knowledge questionnaire followed by implementation of STP on the same day and post-test conducted on the 15th day, using the same structured knowledge questionnaire to find out the effectiveness. The results revealed that in posttest there was a significant gain in knowledge of staff nurses with a mean of 23.83+ 2.21 compared to pretest mean of 17.90+ 2.79 and the improvement was statistically significant (p<0.05). There was no significant association found in relation to any of the demographic variables. The overall findings of the study clearly showed that the STP was significantly effective in improving the knowledge of staff nurses regarding coronary angiogram.

Keywords: Effectiveness, structured teaching programme, coronary angiogram, staff nurses, knowledge and structured knowledge questionnaire.
The Prevalence of Physical Inactivity and Association with Abdominal Obesity among Married Adults in Sepang, Selangor, Malaysia
Authors: Radzi Aisyah Muhammad , Norfahmi Atiqah Mohd , Che Hamid Che HusnaIzzati
Published: September 2021

Lifestyle factors such as physical inactivity is heavily correlated with the development of many chronic diseases and this might also contribute to abdominally obese among married people. Therefore, this study was conducted to determine the prevalence of physical inactivity and the association with abdominal obesity among married adults in the residential area of Salak, Sepang, Selangor.
A cross-sectional study was conducted among community who were selected through a simple random sampling. Malaysian, aged more than 18-year-old and fulfill the inclusion & exclusion criteria were interviewed using a set of validated questionnaires. The data were analyzed using JASP.
Almost 46% of the respondents were physically inactive and majority were female (50.6 %), ≥60 age (58.8%) and retiree (60%) with lack of time was the most common barrier (60%). However, there was no significant association between physical activity and abdominal obesity.
Therefore, more awareness program should be focusedon physical inactivity and married life.

Keywords: physical inactive, abdominal obesity, waist circumference, married, Selangor.
ОБЕСПЕЧЕНИЕ КОНТРОЛЯ КАЧЕСТВА РАБОТ ПРИ ПРОВЕДЕНИИ КАПИТАЛЬНОГО РЕМОНТА ЖИЛЫХ ДОМОВ СО СТОРОНЫ УПОЛНОМОЧЕННЫХ ОРГАНОВ ИСПОЛНИТЕЛЬНОЙ ВЛАСТИ
Authors: Kalashnikov Sergey Yurievich , Bagautdinova Tatiana Mikhailovna , Khokhlova Irina Sergeevna
Published: September 2021

Рассмотрен вопрос контроля работ при проведении капитального ремонта многоквартирных домов (МКД) в общем по-рядке взаимодействия участников процесса. Особый акцент сделан на высокой социально-политический значимости темы капитального ремонта в стране и соответствующих контрольных функций уполномоченных лиц и организаций. Региональные программы капитального ремонта при формировании, принятии и исполнении связаны с четко определенным перечнем участников, включающим в себя собственников помещений, органы государственной власти, субъекта федерации, общественные организации и объединения, управляющие организации, строительные организации, надзорные органы и др. Их правильное взаимодействие определяет успешность реализации программ. Рассмотрены уровни контроля властных структур и уполномоченных лиц в рамках регламента взаимодействия участников процесса. Удовлетворенность собственников качеством проведения работ формирует понимание эффективности государственной программы капремонта. Проанализирована совокупность ситуаций по обеспечению контроля в рамках реализации регламента деятельности субъектов капремонта. Приведены на примере муниципальных образований Волгоградской области типичные примеры нарушения прав собственников при проведении капитального ремонта. Установлена эффективность регламентации системы контроля качества и в целом ее работоспособность при проведении капитального ремонта МКД.
СОВЕРШЕНСТВОВАНИЕ УПРАВЛЕНИЯ СТРОИТЕЛЬНЫМ ПРОЕКТИРОВАНИЕМ НА БАЗЕ ОБЛАЧНЫХ ТЕХНОЛОГИЙ В УСЛОВИЯХ ЦИФРОВИЗАЦИИ ЭКОНОМИКИ
Authors: Vilisova Anastasia Dmitrievna
Published: September 2021

В статье рассматривается применение в строительной отрасли облачных технологий, позволяющих реализовать техно-логические подходы к цифровизации. Цель исследования ‒ разработка теоретических основ облачной информационно-проектировочной среды (ОИПС), предполагающей управление процессом взаимодействия участников инвестиционно-строительных проектов на базе облачных технологий. Приводится обобщенная семантическая модель «сущность – связь» для рассматриваемой предметной области. Конкретизированы факторы, определяющие функционирование облачной информационно-проектировочной среды. Практическая ценность исследования заключается в том, что теоретические основы облачной среды могут быть использованы при разработке соответствующего программного обеспечения, реализация которого в проектной деятельности позволит оптимизировать управление в системе взаимодействия участников инвестиционно-строительных проектов.
Travelling-wave behaviour in problems with degenerate diffusion
Authors: Quirós Fernando
Published: September 2021

We review some recent results on the large-time behaviour of solutions to certain reaction-diffusion equations involving a diffusion operator that degenerates at the level 0. Nonnegative solutions with compactly supported initial data have a compact support for any later time, so that the problem has a free boundary whose asymptotic location one would like to determine.

Problems in this family have a unique (up to translations) travelling wave solution with a finite front. When the initial datum is bounded, radially symmetric and compactly supported, we prove that solutions converging to 1 (which exist for all the reaction terms under consideration) do so by approaching a translation of this unique traveling wave in the radial direction, but with a logarithmic correction in the position of the front when the dimension is bigger than one. As a corollary we obtain the asymptotic location of the free boundary and level sets in the non-radial case up to an error term of size O(1). A main technical tool of independent interest is an estimate for the flux.

This is a collaboration with Y. Du, A. Gárriz and M. Zhou.
Optical Resonances in Metal Nanostructure Lattices, Tuning the Al–M Interactions in Group 1 Aluminyls
Authors: Warren Aran , Evans Matthew
Published: September 2021

Optical Resonances in Metal Nanostructure Lattices

Nanostructured surfaces exhibiting resonances with long life-times and high quality factors have shown promise in applications including on-chip lasing1 and sensing2. Metal nanostructure with dimensions less than 100 nm can exhibit localised plasmon resonances (LSPR) in the visible spectrum. These structures strongly scatter the incident light resulting in a low quality factor resonance, however, when arranged in a lattice radiation can be supressed resulting in much higher quality factors. These lattices have been used in a range of sensors applications and are also interesting for use as on-chip laser cavities, where polarisation, wavelength and direction of the lasing emission can be controlled by adjusting the lattice parameters. In this presentation I will present the fabrication of lithographically defined metal nanostructure lattices from the single structure to more complex lattices. Angle resolved extinction spectrum measurements will be presented with support from numerical models. Finally, I present modelling of new lattice configuration which converts linear polarisation to elliptical polarisation due to the breaking of geometric symmetry.

Tuning the Al–M Interactions in Group 1 Aluminyls

Aluminium is an earth-abundant material that can be utilised in the +1 oxidation (low-valent) state to affect small molecule activation. For the neutral aluminium(I) systems, the reduction of greenhouse gases (i.e. CO2, N2O) proves to be a more challenging task. However, a relatively new class of anionic aluminium(I) system has been shown to have extreme potency towards activating greenhouse gases, and other small polar (i.e. NH3) and non-polar molecules (i.e. H2). These complexes are termed the aluminyl anions, and they contain a low valent aluminium(I) centre that is supported by a dianionic ligand charge-balanced by a group 1 metal cation. The cation plays a vital role in the reactivity of these complexes, and dictates the structure of the aluminyl in both the solid- and solution-state. Until recently, all of the reported aluminyl systems were exclusive to potassium. This talk details the synthesis of the first sodium and lithium aluminyls, isolated as contacted dimeric pairs (CDPs), and their conversion into the corresponding monomeric ion-pairs (MIPs) and separated ion-pairs (SIPs) using appropriate chelating ligands.
Gradient-Free Aerodynamic Shape Optimization using PyFR and MADS
Authors: Aubry Anthony
Published: September 2021

The development of next-generation aircraft will rely on our ability to perform shape optimization using high-fidelity Computational Fluid Dynamics (CFD). Whereas previous low-fidelity solvers, such as the Reynolds Averaged Navier-Stokes (RANS) approach, are amenable to gradient based optimization, high-fidelity fidelity solvers, such as Large Eddy Simulation (LES), are not. LES resolves unsteady turbulent structures, resulting in chaotic divergence of the flow and objective functions when perturbed. As a result, classical sensitivity analysis via the adjoint or tangent methods is unconditionally unstable.
In this presentation we demonstrate the utility of a gradient-free Mesh Adaptive Direct Search (MADS) approach for performing shape optimization with LES. We first demonstrate the suitability of MADS for optimizing model problems, specifically the Lorenz system. We then use MADS coupled with PyFR to perform shape optimization of an SD7003 airfoil and two independent optimizations of a T106D turbine cascade. Results demonstrate >20% performance improvement relative to reference designs for both cases. Importantly, these results are obtained within days via two independent levels of parallelism. This demonstrates that aerodynamic shape optimization using LES is now feasible, and that it can be used for practical aerospace geometries.
Meaning of Breast Cancer in Women’s Discourse
Authors: de Souza Gabrielle , Martins da Rosa Luciana , Arzuaga-Salazar María Angélica , Radünz Vera , dos Santos Maristela Jeci , Rangel-Flores Yesica
Published: September 2021

Objective: To reveal the meaning of breast cancer.

Materials and method: A narrative research study that selected, using the snowball technique, 11 women (data saturation) diagnosed with breast cancer, on disease remission, and living in the region of Florianópolis (Brazil). Semi-structured interviews were conducted between August and December 2018, and they were subjected to the Collective Subject Discourse technique. Four central ideas emerged from the analysis of the narratives; this article presents the central ideal called “Meaning of the breast cancer diagnosis”, which has eight sense categories.

Results: The central idea covers the following categories: “Suffering when facing the diagnosis”, “Fear of the disease and of death”, “Professional inability for bad news”, “Initiatives to streamline treatment”, “Concern and affection with the family members as a driving force to face cancer”, “Difficulties with the family members”, “Support from the family members, from the professionals and/or from the support group”, and “Faith and spirituality”.

Conclusions: The discourse reveals that the meaning of the disease diagnosis is linked to the need for treatment, to the support provided by faith, family members, the health team, and support groups, and to the difficulties faced with family members and professionals. These results should imply the provision of specific Nursing care from the diagnostic phase until after cancer remission/survival.
Teachers' Perspectives about Distance Education for Refugee Students Amid the COVID-19 Pandemic in Greece: Challenges and Implications
Authors: Gkaintartzi Anastasia
Published: September 2021

This article presents a small scale qualitative study which aims to investigate the teachers' perspectives, practices and experiences regarding distance teaching and learning among refugee students in Greece during the first wave of the COVID-19 pandemic. Through the teachers' voices, we attempt to initially map and frame the context of distance education for refugee students, as it was implemented during the first lockdown (March-May 2020) and understand the experiences, challenges and changes involved for both refugee students and teachers. The study was conducted through open-ended online questionnaires, which were completed by 27 participant teachers, teaching students with a refugee/migrant background in their classes and implementing distance teaching during the first COVID-19 school closure. The findings provide insights into the ways teachers and students responded to and experienced distance education as well as the challenges and possibilities involved. Implications are drawn for supporting vulnerable groups with (language) teaching/learning in crisis.
Conspiracies and Refugees: Armenian Migrants in Bulgaria in the Last Decade of the Nineteenth Century
Authors: Popek Krzysztof
Published: September 2021

During the First World War, the Ottoman Empire caused the death of up to 1.5 million Armenians and the creation of a large diaspora scattered around the world, currently counting up to five hundred thousand people. However, it should not be forgotten that the first mass pogroms targeting Armenians took place in the 1890s, events that are much less recognized in the literature of the subject. Also, in this case, the pogroms led to migrations on a large scale—many Armenians took refuge in Russia, but there were also those who ended up in the Balkans at that time. In the last decade of the nineteenth century, Armenian immigrants were coming to Bulgaria for different reasons than fear for their lives—they were preparing an attempt on the life of the sultan who was responsible for the repressions on their nation and were organizing themselves politically against the Ottoman Empire. This article analyzes the Bulgarian authorities’ attitude toward these migrants.
What Does it Mean to be Human, Prehuman, or Posthuman?
Authors: Agar Nicholas
Published: September 2021

There has been a lack of precision in attempts to say precisely what it might mean to be or become posthuman. This article offers a way to determine what distinguishes humans from posthumans. It treats the relationship between humans and posthumans as the mirror image of the relationship between humans and prehumans. I propose that we view posthumans as not us, but of us. Posthumans are distinct from humans but of humans, where the “of” expresses an important evaluative relationship. This account furnishes a framework for considering the proposals of some transhumanist philosophers that we should forsake our humanity in favor of superior posthuman modes of existence. I argue that we have a pro tanto commitment to remaining human. There are costs in surrendering our humanity that could be justified, but only if the potential benefits from becoming posthuman were both great and probable. Transhumanists offer effective marketing for radical enhancement. But there is a gap between a marketing pitch for radical enhancement and one that justifies surrendering the real benefits of remaining human.
Experiencias de hospedaje juvenil: los hostales como alternativa de convivencia turística
Authors: Pacheco-Reyes Luis Alí , Casaos-Ruiz Ulises
Published: September 2021

Youth travel has the characteristic of being budget constrained. Young people are looking for new forms of travel and accommodation. At present, the lodging alternatives allow more trips for Young people. In particular, hostels are very frequented by young people, but increasingly they are an alternative for all types of travelers. In Oaxaca, hostels are a popular option for foreign travelers but also for Mexican students. But the main motivation that young people show when staying in a hostel is living with other young people and exchanging experiences. That is why the hostel is becoming increasingly relevant as a lodging alternative and competes with the offer that hotels offer.
A Real Option Analysis of the “Flats for Land” System - an Idiosyncratic Equity Financing Mechanism on Real Estate Investments
Authors: Petris Panagiotis
Published: September 2021

A typical real estate development project encounters an entrée capital expense for land purchase that is not immediately recovered until the allocated capital for the land acquisition is replaced with new capital that converts the land to a rentable building space. This article presents an idiosyncratic equity financing scheme that eliminates the sunk cost for a land purchase over a real estate development, within a real options framework. The study provides a model solution, numerical results of the option value, and the optimal investment threshold of a real estate development that is initiated through the “flats for land” scheme.
International Real Estate Review
Authors:   Morgan State University, Cartern Charles C. , Haloupek William J. ,   Lockheed Martin Corporation
Published: September 2021

This paper describes and applies the weighted least squares (WLS) technique that corrects for spatial autocorrelation in the residuals of hedonic regressions. Most empirical studies to date have focused on spatial autocorrelation in the housing market, i.e., single family home valuation. This study focuses on mall stores within shopping centers, with an emphasis on retail site selection within the mall.
International Real Estate Review
Authors:   Northwestern University, Mills Edwin S.
Published: September 2021

Government controls on urban land use are as pervasive as death and taxes. Certainly, I have never been in or seen reference to a country that placed no or even almost no, controls on how owners could develop and use urban land. The most comprehensive study of urban housing development policies, Angel and Mayo (1996), which covers 53 countries that include 80 percent of the world’s population, included none that approximated free markets in housing.
International Real Estate Review
Authors:   National University of Singapore, Tu Yong , Wong Grace K. M. ,   National University of Singapore
Published: September 2021

In Singapore, the public resale housing market is an active second-hand housing market, whereby previously subsidised new public housing units were being transacted at market prices. In contrast to the private housing price determinants that have been identified in the international literature, the prices of public resale housing in Singapore are largely determined by public policies rather than by economic variables. This paper provides some empirical evidence on how and to what degree public housing policies affected the price dynamics of public resale housing in Singapore during the 1990s. The findings have additional implications of the wider consequences of public policies on the prices of private housing units.
International Real Estate Review
Authors:   University of Central Arkansas, He Ling T. , Webb James. R. ,   Cleveland State  University, Myer Neil ,   Cleveland State  University
Published: September 2021

In order to identify effective interest rate proxies for equity and mortgage REITs, this study analyzes seven different interest rate proxies that have been widely used in the REIT literature. They are the monthly holding period returns on long-term U.S. government bonds and high-grade corporate bonds, the percentage changes in yields for long-term U.S. government bonds and high-yield (Baa) corporate bonds, the difference between returns on long-term U.S. government bonds and T-bill rates, the spread between yields on high-yield (Baa) corporate bonds and returns on long-term U.S. government bonds, and the spread between returns on high-grade corporate bonds and returns on long-term U.S. government bonds. The overall OLS results suggest that mortgage REITs are sensitive to all proxies, while equity REITs are significantly affected by only changes in yields on long-term U.S. government bonds and high-yield corporate bonds. The time variation paths for sensitivities indicate that all interest rate sensitivities are time specific. Overall, the changes in yields on high-yield corporate bonds (Baa) has the strongest explanatory power for returns of equity and mortgage REITs for most of the 27-year sample period (1972 through 1998).
International Real Estate Review
Authors:   National University of Singapore, Lee Nai Jia
Published: September 2021

The prepayment risk of adjustable rate mortgages, unlike that of fixed rate mortgages, greatly depends on the decision of mortgagors to move. Given that housing also serves as an investment asset for the owner, it is hypothesised that the expected capital returns of housing are likely to affect his decision to move and hence, prepay. This paper aims to test the capital gains hypothesis using Singapore’s housing market as a case study. In addition, this paper also explores how the expected returns from alternative types of housing affect the decision of households to move/prepay. The expected returns of housing are computed in accordance with the definitions of the Rational Expectation Hypothesis, Adaptive Expectation Hypothesis, and Exogenous Expectation Hypothesis, which are well established in macroeconomic literature and the explanation of cycles. The results showed that the expected returns of public housing formed under the assumptions of rational and adaptive expectation hypothesis are significant. The rational expected return for private housing, however, does not have a significant relationship with the decision of mortgagors to move/prepay, although the adapted expected return for private housing is not significantly related to the households' length of stay.
International Real Estate Review
Authors:   California State University Fullerton, Chan Su Han , Wang Ko ,   California State University Fullerton, Yang Jing ,   California State University Fullerton
Published: September 2021

Conventional wisdom tells us that the price level of properties should be supported by the rent they receive. This paper examines the pricing factors of properties by analyzing how individuals allocate their income to housing consumption and other goods, which in turn become the rent (or implicit rent) to support property values. Our model’s results can explain several puzzling observations in property markets, including why the variance of property appreciation rates is much higher than that of income growth rates in the same area.
International Real Estate Review
Authors:   University of Western Sydney, Chan Nelson
Published: September 2021

Since the introduction of the ‘open door?policy in 1978, China has made significant progress in all aspects. Rapid economic development has sped up the urbanisation of the country. In 1995, there were 640 cities in China. At the end of 1999 the number increased to 667. The high rate of urbanisation has led to great demand for land for infrastructure and property developments. In order to obtain more developable land, the government has implemented various measures, including compulsory land acquisitions to meet the demand. In 1995, about 812 km2 of land was acquired by the government. In 1999, the amount of land acquired was about 340 km2. Although this indicates a falling trend, the amount of land acquired was still very substantial. Land acquisition in China is carried out according to the provisions of the People’s Republic of China Land Administration Law. At present, the law does not address the issue of just compensation to the affected people, and has caused great discontent. This paper attempts to identify the problems and suggests recommendations for improvement.
International Real Estate Review
Authors:   Texas A&M University, Kim Jin , Zhang Ming ,   University of Texas at Austin
Published: September 2021

Literature regarding transit’s impact on land values reports mixed results concerning the economic benefits of accessibility to subway stations, specifically regarding commercial properties. After examining 731 commercial land values in Seoul, Korea, this study suggests a possible explanation for the mixed results: transit’s discrimination impact on land values by location in a built-up urban area. The regression coefficient for distance to station in the central business district is the highest, the subcenters are next, and other areas are lowest – apparently a strong correlation with higher centrality and development densities of submarkets. Also, the inclusion of spatial lag and error term variables greatly improves the goodness of fit of the regression equations lowering the spatial autocorrelation in the ordinary least squares residuals as well as reduces overestimation of value premiums in association with rail transit stations, which enables a regression model to produce a more accurate and efficient estimator for transit’s impact on commercial land values.
Enhancing Narrative Writing Skills of Elementary School Teacher Education Students through Concentrated Language Encounter (CLE) Model Assisted by Short Film Learning Media
Authors: Fauzi Muhammad Rizal , Wardhani Duhita Savira , Puspita Ryan Dwi , Pratama Deri Fadly , Septian Rahayu Galih Dani
Published: September 2021

This research aims at improving the narrative essay writing skills of elementary school teacher education students through Concentrated Language Encounter (CLE) learning activities assisted by short film learning media by employing a quasi-experimental nonequivalent group design. The subjects were all primary teacher education students in West Java, with a sample of 31 elementary school teacher education students in Cimahi City as the experimental class, and 31 Madrasah Ibtidaiyah teacher education students in Bandung City as the control class. The results of the post-test research showed that the average skill of writing narrative essays in the experimental class was 81.10, while the control class obtained an average of 66.32. While the test results of the average N-gain difference in writing narrative essay skills with 2-tailed sig were 0.000 with a significance level of less than 0.05. These findings revealed that there was an increase in the writing narrative essay skills of elementary school teacher education students through the application CLE Model assisted by short film learning media. This research is expected to facilitate lecturers/teachers to teach narrative essay writing skills by optimizing all language skills through the CLE model assisted by short film media.
Investigation of Prospective Preschool Teachers’ Beliefs about Mathematics Teaching and Learning
Authors: Erşen Zeynep Bahar , Akin Nimet , Karakuş Fatih
Published: September 2021

Preschool teachers' beliefs about mathematics are crucial for qualified mathematical learning environments because children need to develop mathematical concepts based on their level of mathematical knowledge. Therefore, the purpose of this research is to determine prospective preschool teachers' beliefs about mathematics teaching and learning and to examine the effect of different variables on these beliefs. This research involved 884 prospective preschool teachers as the research sample at three state universities in Turkey. A belief Scale on mathematics teaching and learning was used as a data collection tool. The results showed that prospective teachers had positive beliefs about mathematics teaching. Moreover, there was a significant difference on prospective teachers’ beliefs in accordance with grade levels. On the other hand, according to the type of prospective teachers’ high school graduation, there was a significant difference in favor of prospective teachers who graduated from vocational high schools in the “mathematical learning” and “nature of mathematics” sub-scales of the scale.
THE EIS OPTIONS AT MONITORING THE SPREAD OF POLLUTION IN THE STREAM
Authors: PAŘÍLKOVÁ JANA , ZACHOVAL ZBYNĚK , JANDORA JAN
Published: September 2021

Water pollution is one of the most significant problems in the world today and is a global problem. Surface water pollution in streams and reservoirs is reflected in the deterioration of the quality of aquatic ecosystems, including those that occur in their vicinity or follow them. Lack of quality drinking water is one of the main causes of various diseases, which can lead to death, especially in developing countries. Therefore, it is important to detect water pollution in time and anticipate how it could develop and be transported in the stream. Measurements on a physical model are time-consuming and economically demanding, but for a given locality it can provide comprehensive information, including the proposal of possible measures and their verification. It is also a suitable approach for calibration and verification of mathematical models. One of the main tasks in the physical modelling of the spread of pollution in the stream was to find a suitable substance that would simulate the pollution without being aggressive towards the water pumping circuit. The method of electrical impedance spectrometry was chosen for its detection in the stream.