In order to improve the thermal shock and ablation resistance of high thermal conductivity carbon/carbon composites, carbon nanotubes (CNTs) were introduced by electrophoretic deposition. After modification, the flexural strength of the composites increases by 53.0% due to the greatly strengthened interfaces. During thermal shock between 1100 °C and room temperature for 30 times, the strength continues to increase, attributed to the weakened interfaces in favor of fiber and CNT pull-out. By introducing CNTs at interfaces, thermal conductivity of the composites along the fiber axial direction decreases and that along the fiber radial direction increases. As the thermal shock process prolongs, since the carbon structure integrity of CNT and matrix in the modified composites is improved, the conductivity increases whatever the orientation is, until the thermal stress causes too many defects. As for the anti-ablation performance, the mass ablation rates of the CNT-modified composites with fibers parallel to and vertical to the flame decrease by 69.6% and 43.9% respectively, and the difference in the mass ablation rate related with fiber orientations becomes much less. Such performance improvement could be ascribed to the reduced oxidative damage and the enhanced interfaces.

This study investigates the status of ICT in Education in Turkmenistan for achieving the United Nations’(UN) Sustainable Development Goal 4 (SDG4) targets. The study uses two methods for data collection: a detailed review of the literature and a survey. For data collection through survey, the National Education Institute of Turkmenistan and United Nations Development Programme (UNDP) Turkmenistan Office representatives take in part to capture different dimensions of the same phenomenon; the integration of ICT into education in terms of achieving the SDG4 in the country. The results indicate the specific issues such as harnessing ICT as an access tool for education, using ICT for the equity and quality of education as well as the teachers’ ICT competency which need to be improved for achieving the Education 2030 in Turkmenistan. The study also finds priority areas for upcoming years: ICT for transforming and expanding TVET and higher education, improving teacher competency as well as building and upgrading learning environments in Turkmenistan.

This study investigates the role of age of first exposure in the acquisition and processing of English articles in an EFL setting. Fifty advanced Korean learners of English participated in a grammatical acceptability judgment task and a self-paced reading task. The participants were divided into two groups depending on the initial age at which they were constantly exposed to English at least 3 hours per week (‘early group’ < 12; ‘late group’ ≥ 12). No significant performance differences were observed between the two groups in the judgment task. However, meaningful differences were found between the reading behaviors of the two groups in the self-paced reading task. These findings show that the learners’ age of first exposure has a significant impact on learners’ performance when the ability to process English articles in real-time is evaluated. In contrast, it has much less impact on learners’ performance on a task which tests explicit knowledge under no time-limit condition.

The photovoltaic properties of perovskite solar cells (PSCs) with a carbon electrode fabricated using different annealing processes are investigated. Perovskite formation (50 oC, 60 min) using a hot-plate and an oven is carried out on cells with a glass/fluorine doped TiO2/TiO2/ZrO2/carbon structure, and the photovoltaic properties of the PSCs are analyzed using a solar simulator. The microstructures of the PSCs are characterized using an optical microscope, a field emission scanning electron microscope, and an electron probe micro-analyzer (EPMA). Photovoltaic analysis shows that the energy conversion efficiency of the samples fabricated using the hot-plate and the oven processes are 2.08% and 6.90%, respectively. Based on the microstructure of the samples and the results of the EPMA, perovskite is formed locally on the carbon electrode surface as the γ-butyrolactone (GBL) solvent evaporates and moves to the top of the carbon electrode due to heat from the bottom of the sample during the hot plate process. When the oven process is used, perovskite forms evenly inside the carbon electrode, as the GBL solvent evaporates extremely slowly because heat is supplied from all directions. The importance of the even formation of perovskite inside the carbon electrode is emphasized, and the feasibility of oven annealing is confirmed for PSCs with carbon electrodes.

오순절/은사주의 운동의 디아코니아 실천은 이 운동의 광범위한 영향에 매우 중요한 역할을 했다. 하지만 이 운동은 비사회적 그리고 배타적 운동이라 하여 그 영향력이 저평가 되었다. 이 연구의 목적은 오순절/은사주 의 운동에서 디아코니아적인 이해와 실천의 흔적들을 발견하는 것이다. 이러한 목적 아래, 초기 오순절주의자들이 디아코니아를 어떻게 이해하고 실천했는지를 살폈다. 또한 오순절/은사주의 운동에서 디아코니아에 대한 이해가 어떻게 변화하는 지를 추적했다. 역사적으로 오순절/은사주의 운동 은 사회, 경제적, 정치적 변화로 인해 발생하는 다양한 사회문제들을 다루었 다. 오순절/은사주의 운동에는 사회 참여, 특정 디아코니아 실천 참여, 적극적인 진보적 사회 운동에 이르기까지 수많은 기록이 존재한다. 오순절/ 은사주의 운동을 비사회적, 배타적 운동으로 평가하는 것은 이 운동에 대한 피상적인 이해를 보여주고 있음을 알 수 있다.

Based on the Anthropomorphism theory and the Computers Are Social Actors paradigm, this research adopts questionnaire method and explores the relationship between robot anthropomorphism, social presence, social cognition and consumer’ continued using intention. In addition, we select technology anxiety as the moderator to explore its boundary effect

The emergence and explosive growth of social media platforms such as Instagram, Facebook, Tweeter, etc. has dramatically changed both the way consumers shop and brands advertise. According to a study by Track Maven, Instagram is the most engaging social media platform nowadays with the most average interactions per post per 1,000 followers. It stimulates “Instagram influencer marketing” to develop rapidly and promotes a great variety of brands. It has fundamentally changed the balance of power between customers and brands because it allows peer recommendations to play a much larger role in purchasing decisions [13]. It has become one of the trendiest marketing strategies that focus on influential figures on Instagram rather than targeting on the market as a whole. Instagram influencer marketing highlights content creators who may impact their audiences’ buying habits. For example, shoppers who compare hotel reviews can simply search “hashtag plus hotel name (e.g. #hiltonnewyork) in Instagram and read people’s experiences with that hotel among related posts. Many of those posts were created by influencers who are collaborating with the brands to advertise. Based on activities of more than 12 million Instagram influencers between the first quarter of 2018 and the first quarter of 2019, Social bakers created a report to categorize influencers into three categories: micro-influencers who have fewer than 10,000 followers, macro influencers with 10,000 to 50,000 followers, and celebrities who attracts a million or more followers. The majority of Instagram influencers are “micro-influencers”. Their finding also reveals that the combined amount of sponsored content on Instagram for all three categories of influencers in North America has jumped 150% in the last year.