Miracle-dz/UniFAR-FTUs huggingface dataset:
Efficient and Stable Perovskite Solar Cells Based on Inorganic Hole Transport Materials

Although power conversion efficiencies of organic-inorganic lead halide perovskite solar cells (PSCs) are approaching those of single-crystal silicon solar cells, the working device stability due to internal and external factors, such as light, temperature, and moisture, is still a key issue to address. The current world-record efficiency of PSCs is based on organic hole transport materials, which are usually susceptible to degradation from heat and diffusion of dopants. A simple solution would be to replace the generally used organic hole transport layers (HTLs) with a more stable inorganic material. This review article summarizes recent contributions of inorganic hole transport materials to PSC development, focusing on aspects of device performance and long-term stability. Future research directions of inorganic HTLs in the progress of PSC research and challenges still remaining will also be discussed.
Exploring electrospun nanofibers for physically unclonable functions: a scalable and robust method toward unique identifiers

Optical physically unclonable functions (PUFs) have great potential in the security identification of the internet of things. In this work, electrospun nanofibers are proposed as a candidate for a nanoscale, robust, stable and scalable PUF. The dark-field reflectance images of the polymer fibers are quantitatively analyzed by the Hough transform. We find that the fiber length and orientation distribution reach an optimal point as the fiber density (number of fibers detected by Hough ttansform) grows up over 850 in 400 × 400 pixels for a polyvinylpyrrolidone (PVP) nanofiber-based PUF device. Subsequently, we test the robustness and randomness of the PUF pattern by using the fiber amount as an encoding feature, generating a reconstruction success rate of over 80% and simultaneously an entropy of 260 bits within a mean size of 4 cm2. A scale-invariant algorithm is adopted to identify the uniqueness of each pattern on a 256-sensor device. Furthermore, the thermo-, moisture and photostability of the authentication process are systematically investigated by comparing the polyacrylonitrile to the PVP system.
Student engagement during pandemic COVID-19 and its implications for guidance and counseling

Student engagement is a condition of the extent to which students play an active role in the learning process by focusing on time, energy, mind, effort, feelings and making it happen in action to complete their academic tasks completely. This study aims to explore and find out the level of student engagement in the Covid-19 pandemic period seen from gender differences and the school level. Quantitative descriptive research with this survey design involves 469 students, 245 students of the junior high school, and 224 senior high school students chosen using a stratified random sampling proportionate cluster. The results showed that secondary school students in the Covid-19 pandemic period had an average level of student engagement in the medium category. This study found, there was no different level of student engagement based on gender (t (467) = -1.86). But specifically, the participation has a significant difference, while the skill, emotion, and performance do not have a significant difference. At the school level, indicate that there are significant differences in the level of student engagement (t(467)= -3.39). Furthermore, it can be seen from every indicator of student engagement skills, participation and performance have a significant difference and only an emotion that does not have it. The results of this study have implications for the planning of guidance and counseling programs in schools during the Covid-19 pandemic period, which is important to see the level of student engagement, especially in the emotional indicator. Further discussion is discussed in this article.
Learners’ Perceptions towards Online Learning during the Covid-19 Pandemic: A Study at a Center of Foreign Languages in Vietnam

Online learning is a revolutionary trend of educational technology today. Particularly, online learning has become the donminent alternative to traditional learning during the Covid-19 pandemic and in the new normal. Various studies have shown that online learning has varying effectiveness at all levels and types of education; however, it is worth noting that many learners are still struggling to accept the mode of online learning, and learner retention has been suggested as one of the greatest weaknesses in online education. The current study used a questionnaire with open-ended questions to examine online learners’ perceptions of online learning as well as to understand reasons for their retention in online courses. The results revealed that most of the learners, especially young learners still preferred traditional face-to-face learning to online learning due to various problems they experienced while doing online learning, such as lack of facilities and necessary interactions. However, the retention rates are relatively modest, indicating the perceived quality of online programs at a center of foreign languages in Vietnam.
Validation and genetic heritability estimation of known type 2 diabetes related variants in the Korean population

Genome-wide association studies (GWASs) facilitated the discovery of countless disease-associated variants. However, GWASs have mostly been conducted in European ancestry samples. Recent studies have reported that these European-based association results may reduce disease prediction accuracy when applied in non-Europeans. Therefore, previously reported variants should be validated in non-European populations to establish reliable scientific evidence for precision medicine. In this study, we validated known associations with type 2 diabetes (T2D) and related metabolic traits in 125,850 samples from a Korean population genotyped by the Korea Biobank Array (KBA). At the end of December 2020, there were 8,823 variants associated with glycemic traits, lipids, liver enzymes, and T2D in the GWAS catalog. Considering the availability of imputed datasets in the KBA genome data, publicly available East Asian T2D summary statistics, and the linkage disequilibrium among the variants (r2 < 0.2), 2,900 independent variants were selected for further analysis. Among these, 1,837 variants (63.3%) were statistically significant (p ≤ 0.05). Most of the non-replicated variants (n = 1,063) showed insufficient statistical power and decreased minor allele frequencies compared with the replicated variants. Moreover, most of known variants showed <10% genetic heritability. These results could provide valuable scientific evidence for future study designs, the current power of GWASs, and future applications in precision medicine in the Korean population.
INVENTIVE DESIGN AND PRODUCT DEVELOPMENT OF A MECHANICAL ELEMENT

Lappeenranta University of Technology School of Business and Management Global Management of Innovation and Technology Sergei Shalnev Inventive design and product development of a mechanical element Master’s thesis 69 pages, 29 figures, 7 tables, 3 appendices Examiners: Leonid Chechurin, Kalle Elfvengren
Examining Burnout in the US Military with a Focus on US Air Force: A Review of Literature

Through a systematic review of the literature, we draw attention to factors associated with burnout and the effects on the military with a special focus on the US Air Force. Our review consists of the military and human resource development (HRD) literature on burnout. We integrate insights from the review of both literature on burnout and develop a conceptual model based on four major themes. First, significant factors associated with burnout such as the occupational nature of work were identified. The second and third themes describe the effects of burnout on the individual (health and reduced professional efficacy) and organization (commitment, job performance, and increased turnover). Fourth, strategies for minimizing burnout suggest that leadership support is important for service members. Specifically, a climate of support through open communication, realistic resiliency training, and expanding opportunities for career growth are likely to mitigate burnout. We utilize military and HRD perspectives on burnout and present implications for theory and research, as well as recommendations, for improving practice in military settings.
STRATEGI PENGEMBANGAN DAYA TARIK WISATA BANGSRING UNDERWATER BERBASIS MASYARAKAT

Bangsring Underwater is one of the natural tourism attractions in Banyuwangi. Located in Bangsring village, Wongsorejo subdistrict, Banyuwangi regency. Bangsring Underwater is known for its underwater natural beauty that continues to be maintained and developed by community. The aims of the study are: 1) to find out what are the supporting factors and inhibitory factors in the development of community-based Bangsring Underwater tourism attraction. 2) find out of strategy of developing community-based tourism. Data collecting are observations, in-depth interviews, and documentation. By using SWOT as data analysis tools in the form of (Strength, Weakness, Opportunities And Threats). The results of this study found the presence of several supporting factors such as; a) supported by the local government, b) the village government of Bangsring, c) the tourism conscious group Samudra Bhakti (pokdarwis Bangsring Underwater) in the development of the attraction of Bangsring Underwater. And factors several inhibitory factors such as; a) lack of human resources and b) some surrounding communities that have not been able to accept the existence of tourism activities in the tourist attraction Bangsring Underwater. In addition, this study also found seven alternative strategies obtained from SWOT analysis resulted in seven such strategies; (SO) tourism attraction development strategy, and tourism attraction promotion strategy. (WO) strategy improves safety and comfort. (ST) strategy to improve the quality of the environment, and sustainable tourism development strategy. (WT) human resource development strategy, and strategy to increase cooperation with elements of government and private partnerships.
CALiPER Report 21.3: Cost-Effectiveness of Linear (T8) LED Lamps

Meeting performance expectations is important for driving adoption of linear LED lamps, but cost-effectiveness may be an overriding factor in many cases. Linear LED lamps cost more initially than fluorescent lamps, but energy and maintenance savings may mean that the life-cycle cost is lower. This report details a series of life-cycle cost simulations that compared a two-lamp troffer using LED lamps (38 W total power draw) or fluorescent lamps (51 W total power draw) over a 10-year study period. Variables included LED system cost ($40, $80, or $120), annual operating hours (2,000 hours or 4,000 hours), LED installation time (15 minutes or 30 minutes), and melded electricity rate ($0.06/kWh, $0.12/kWh, $0.18/kWh, or $0.24/kWh). A full factorial of simulations allows users to interpolate between these values to aid in making rough estimates of economic feasibility for their own projects. In general, while their initial cost premium remains high, linear LED lamps are more likely to be cost-effective when electric utility rates are higher than average and hours of operation are long, and if their installation time is shorter.
Acceptance of Health Messages Conveyed by Parasocial Opinion Leaders on Twitter among Followers

Social media does not only provide a space for individuals to communicate, but it also encourages individuals to find and share health information. This situation has led to a change in the patterns and functions of health opinion leaders that exist on social media. Health opinion leaders influence media users by sharing and delivering health information and are capable of fostering parasocial relationships with media users. Therefore, it is essential to investigate the process by which parasocial opinion leaders shape health messages on social media. In correspondence, this study sought to understand the level of acceptance of health messages among Twitter users of the information tweeted by parasocial opinion leaders. In-depth interviews were conducted on 25 followers of parasocial health opinion leaders on Twitter. This study found that the formation of health messages and information conveyed by parasocial health opinion leaders could influence their followers. Four forms of message reception were identified in this study: 1) information and complexity reduction (a description, information delivery style, information sharing, information, and health literacy, and correction of information and mythical perceptions), 2) health orientation, 3) stimulation of interest, and 4) strengthening of the image and ethics of professionalism. Additionally, this study also discovered that media users perceived health opinion leaders as mentors, family members, friends, and idols. Keywords: Health communication, opinion leader, parasocial opinion leaders, parasocial relationship, social media.
Effects of augmented local abdominal activation patterns on lower extremity biomechanics during landing in males and females

"This research assessed changes in lower extremity biomechanics as a result of augmented local abdominal contractions during double leg landings. The study design followed a two-day (control and intervention days) within subject model in which two conditions on each day were compared, (control-control and control-experimental) with between sex comparisons. Fifty subjects (25 males and 25 females) were activity matched and represented a sample of healthy and recreationally active individuals. A repeated measures ANOVA comparing control and experimental conditions on the intervention day revealed that all subjects significantly increased local abdominal activation during 150ms prior to landing. However, a 2 (sex) x 3 (muscle) x 2 (phase of landing) repeated measures ANOVA demonstrated that only males maintained this contraction during the 150ms time interval after landing. A repeated measures ANOVA evaluating changes in leg spring stiffness (LSS) as a result of the augmented local abdominal contraction showed a sex by condition interaction demonstrating that only males experienced significant increases in LSS from control to experimental condition while females demonstrated no significant changes. No significant differences by condition were noted when assessing changes in ankle, knee, and hip energetics. The evaluation of lower extremity total joint displacements across condition demonstrated that males increased LSS through decreases in hip range of motion while females showed no significant changes in hip range of motion but increased knee and ankle motion. From these results we concluded that augmented local abdominal activation during a double leg landing task increased LSS by decreasing hip range of motion in males. "--Abstract from author supplied metadata.
Endangered Species Act Analysis Model Comparison Study: Comparing HI-RUN and SELDM for use in Washington State Department of Transportation Biological Assessments

This study compares the Highway Runoff Dilution and Loading Model (HI-RUN) and Stochastic Empirical Loading and Dilution Model (SELDM) models for use in Washington State Department of Transportation (WSDOT) biological assessments for western Washington highway projects. Current WSDOT policy and an interagency agreed upon analytical approach require the use of HI-RUN in these assessments, which are completed in order to comply with Section 7 of the Endangered Species Act. SELDM is a model developed by the U.S. Geological Survey (USGS) and the Federal Highway Administration (FHWA) which could possibly be used in biological assessment analysis. This study was completed to determine the feasibility and cost benefits of use of either model for biological assessments in western Washington projects. The study consists of three primary components: comparison of model results, comparison of model usability, and comparison of costs and benefits of each model. The comparison demonstrates that SELDM provides similar assessment results to HI-RUN and that with preliminary steps as detailed in the study, both models were found to be similarly usable. Ongoing maintenance costs were also found to be similar, but implementation costs related to use of SELDM within current policy requirements was found to be prohibitive. The recommendation of these findings is for continued use of the HI-RUN model, with the condition that further analysis be completed if policy conditions were to change. Additionally, it is recommended that WSDOT investigate other possible needs and situations where the SELDM model would be beneficial.
Reconfigurable Dual-Band Capsule-Conformal Antenna Array for In-Body Bioelectronics

Wireless in-body bioelectronics offer powerful biosensing and therapeutic capabilities. Efficient and robust in-body antenna designs are required to ensure a reliable through-body link, increase data rates, and reduce power budgets. This study proposes and demonstrates a pattern- and frequency-reconfigurable capsule-conformal antenna array that responds to the challenges of next generation in-body bioelectronics. The array comprises two mirrored dual-band elements operating at 434-MHz and 2.45-GHz ISM bands. Tissue-matched dielectric loading of the array improves the radiation efficiency and ensures quasi tissue-independent operation for both bands. Owing to the full ground plane, the antenna is shielded from the capsule payload. The achieved efficiencies are compared to the fundamental limitations and closely approach them. The realized gains are –28.9 dBi and –18.6 dBi at 434 MHz and 2.45 GHz, respectively, when the array is placed in the center of a ø100-mm diameter spherical phantom with muscle-equivalent properties. Using a single switch, the array can be reconfigured to adjust the angular position of the nulls in the radiation pattern in both bands thereby enabling synthesis of an effectively null-free omnidirectional pattern. The array prototypes are fabricated, and the impedance and far-field radiation patterns are characterized to validate the design in tissue-equivalent liquid phantoms.
The effect of temperature on railway rolling noise

The stiffness and damping of railpads in a railway track are affected by changes in the temperature of the surrounding environment. This results in the rolling noise radiated by trains increasing as the temperature increases. This paper quantifies this effect for a ballasted track equipped with natural rubber railpads and also studies the behaviour of a cork-reinforced rubber railpad. By means of measurements in a temperature-controlled environment, it is shown that the shear modulus of the natural rubber increases by a factor of six when the temperature is reduced from 40 ℃ to −20 ℃. The loss factor increases from 0.15 at 40 ℃ to 0.65 at −20 ℃. The shear modulus of the cork-reinforced rubber increases by a factor of 10, and the loss factor shows the typical trend of transition between rubbery and glassy regions. The railpad stiffness estimated from decay rate measurements at different temperatures is shown to follow the same trend. Field measurements of the noise from passing trains are performed for temperatures between 0 ℃ and 35 ℃; they show an increase of about 3–4 dB. Similar results are obtained from predictions of noise using the measured dependence of pad stiffness.
Anti-Inflammatory and Antioxidant in Vitro Activities of Magnoliae Flos Ethanol Extract

This study evaluated Magnoliea Flos ethanol extract (MFE) as a potential natural anti-inflammatory and antioxidant in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages and in vitro antioxidant assays. MFE (10, 30, and 50 μg/mL) dose-dependently inhibited LSP-induced nitric oxide production, which is mediated by down-regulating gene and protein expression of inducible nitric oxide synthase and cyclooxygenase-2. MFE also down-regulated both gene and protein expression of nuclear factor-kappa B and its downstream genes, such as tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), compared with vehicle-treated cells. As a result, MFE treatment of LPS-stimulated macrophages significantly suppressed release of pro-inflammatory cytokines, such as TNF-α and IL-6. The antioxidant in vitro test revealed 2,2-diphenyl-1-picrylhydrazyl and 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activities of MFE (0.25∼5 mg/mL) of 16.62% to 75.17% and 38.54% to 92.91%, respectively. The ferric reducing antioxidant ability of MFE was 0.54 mM to 2.14 mM. Overall, MFE exhibited antioxidant activity and an effective anti-inflammatory response in LPS-stimulated macrophages, which is potentially valuable for application as a natural functional material.
Modeling and Analysis of Airborne Conformal Arrays Obstructed by Fixed Blockage

An array conformal on an aircraft is affected by fixed blockage on the aircraft. This blockage will cause an increase in the sidelobe level and a distortion of the pattern, which considerably affects target detection. The traditional strategy treats the blockage and antennas as a whole system leading to increased difficulty in analysis and research on the mechanism of blockage. Thus, this paper presents a novel method. On the basis of the Fresnel zone theory of electromagnetic propagation, the main shadow region of electromagnetic propagation of the conformal array by the fixed blockage is found. Then, the shadow region is divided into small scattering elements, which significantly reduces the scope of the solution. Additionally, an association model between the blockage–conformal array system and isolated element is established based on the characteristic modes of isolated elements and coordinate transformation. The proposed method explains the influence mechanism of the blockage on the conformal array from the perspective of the characteristic currents and can accurately describe the influence of the blockage. Finally, several numerical experiments are presented to illustrate the effectiveness of the proposed method.
Integrating Renewable Energy with Conventional Power Grid

APA Citation Saleh, M. (2014). Integrating renewable energy with conventional power grid [Master’s thesis, the American University in Cairo]. AUC Knowledge Fountain. https://fount.aucegypt. edu/etds/1248 MLA Citation Saleh, Mobarak. Integrating renewable energy with conventional power grid. 2014. American University in Cairo, Master's thesis. AUC Knowledge Fountain. https://fount.aucegypt. edu/etds/1248
Familial traits of attached and unattached earlobe in human population of different age groups- A case study of district Nawabshah, Pakistan

This study aimed to evaluate frequency of attached earlobes (dominant) and unattached earlobes (recessive) traits in humans of different age groups. This study was conducted in the Department of Molecular Biology and Genetics of Shaheed Benazir Bhutto University, Shaheed Benazir Abad from September to October 2020. A total of 200 families with attached and unattached earlobes were included by using non-probability convenient sampling. Data was collected regarding attached and unattached earlobes of different people. The data was collected and analysed by using SPSS version 21.0. Results of the study suggested that unattached earlobes were dominant feature, and the attached earlobe feature appears to be recessive among all 200 families. We observed that the dominant feature of the unattached earlobe was more common in the 1 to 20 years’ age group, while the recessive feature of the attached earlobe was common in 31 to 45 years old age group. The study concluded that unattached earlobes can be observed in people of every age group and associated with family traits.