This study evaluates the determinants of Cambodia’s agricultural product exports from 2004 to 2023 across 35 major export destinations using the gravity model approach. During this period, China accounted for the largest share of export value, followed by Vietnam, France, Malaysia, and Thailand. Cambodia’s GDP and the GDP of its trading partners positively influenced the country’s agricultural exports. Moreover, the historical status of export destinations as former French colonies facilitated Cambodia’s export flows. In contrast, exchange rates and geographical distance negatively affected Cambodia’s agricultural trade. This study confirms the existence of significant untapped export potential between Cambodia and its trading partners. To optimize its agricultural exports, Cambodia can benefit from processing agricultural products before export. Therefore, the Royal Government of Cambodia (RGC) should actively support and promote investment in the agricultural processing industry to enhance the country’s international competitiveness. Additionally, the RGC and policymakers should strategically select export destinations through favorable trade negotiations and focus on the effective implementation of existing export policies.

In Cambodia, rubber is an important agricultural industry crop that produces latex and rubber wood. Cambodia exports most of its natural rubber to Vietnam, Malaysia, Singapore, China, and Spain. This study aimed to assess export competitiveness of Cambodian rubber using Revealed Comparative Advantage (RCA) and Trade Specialization Index (TSI) and to explore strategies for enhancing exports. This research analyzed secondary data from Trade Map and the General Directorate of Rubber (GDR) from 2002 to 2022. Findings show that Cambodia has a significant comparative advantage globally in natural rubber, with an RCA of 18. Particularly, Cambodia demonstrates substantial comparative advantages in its rubber exports to Vietnam, Malaysia, and China. Additionally, it has a high TSI, indicating a strong potential for expanding exports to these markets. However, Cambodia’s reliance on Vietnam for its rubber exports is high, highlighting the need for efforts to diversify its export markets.

In the field of oscillating hydrofoil research, the choice of hydrofoils is still mainly based on traditional NACA airfoils. The article explores the hydrodynamic characteristics of other airfoil structures to further improve the applicable range of hydrofoil working environments. By applying the swept structure of fish tail fins through biomimetic methods to oscillating hydrofoils, a motion model of the swept oscillating hydrofoil is established, and the relevant mathematical expressions and parameter definitions are described. Through numerical simulation methods, the effects of the pitch axis position and the tip-to-root ratio on the performance of the swept oscillating hydrofoil are analyzed. The simulation results show that the pitch axis position has a significant impact on the various force characteristics and energy acquisition efficiency of the hydrofoil, while the tip-to-root ratio mainly reflects the degree of sweep of the hydrofoil, thereby affecting the lift-to-drag ratio and the moment coefficient of the swept hydrofoil. Selecting the appropriate pitch axis position and tip-to-root ratio will enhance the lift of the hydrofoil while reducing the drag experienced.

Silicon carbide (β-SiC) was synthesized through an improved sol–gel method, then Ni/SiC catalysts were prepared using a hydrothermal method. The catalysts were characterized using TEM, H2- TPR, CO2- TPD and N2- TPD, etc. The results showed that the synthesized β-SiC had a large specific surface area, promoting the dispersion of Ni species and thus exposing more active sites. The interaction between Ni species and β-SiC contributed significantly to catalytic performance. Furthermore, the strong alkalinity of catalyst could adjust the bond energy of the active metal and N (M–N), which were conducive to desorption of the recombinant N2 from the metal surface, promoting to ammonia decomposition. Among the Ni/SiC catalysts, 30Ni/SiC-700 synthesized with the Ni loading of 30 wt% and calcination temperature of 700 °C, exhibited the optimal ammonia conversion rate of 93.4% at 600 °C under the space speed of 30,000 mL∙gcat −1∙h−1, and demonstrated a long-term stability, suggesting a very promising catalyst in ammonia decomposition.

사범대학 학생은 대학생일 뿐만 아니라 미래의 교사로서 자신의 핵심 소양을 향상시킬 뿐만 아니라 학생의 핵심 소양을 발전시키는 중요한 책 임을 져야 한다. 본 논문의 연구 목적은 사범생의 직업적 인식이 핵심 소양에 미치는 영향을 조사하는 것이다. 연구 방법은 정량적 연구 방법 과 SPSS 26.0 통계 소프트웨어를 사용하여 데이터를 분석하였다. 연구 결과는 사범생의 직업 정체성과 핵심 소양 사이에 유의미한 정적 상관관 계가 있음을 보여주며, 직업적 정체성의 각 차원은 핵심 소양에 예측 효 과가 있는 것을 보여 주었다. 이 연구를 통해 우리는 사범생의 핵심 소 양 형성에 영향을 미치는 요인과 메커니즘을 찾고 사범생의 인재 양성과 기초 교육 발전을 향상시키기 위한 이론적 참고 자료를 제공한다.

This study systematically investigated the efficacy of incorporating graphene/cerium hydroxide (GH) composite material into epoxy-modified polyurethane resin coatings for enhancing the corrosion resistance of Q690qE steel within polluted marine atmospheric conditions. The research encompassed a range of electrochemical assessments and analyses. Notably, the E/GH-0.3% coating displayed a substantially positive open-circuit potential (OCP) and prominently reduced corrosion current density, leading to annual corrosion rates of 2.72 mm/a following 25 days of immersion. Electrochemical impedance spectroscopy (EIS) elucidated the superiority of the E/GH-0.3% coating, characterized by the highest impedance modulus |Z| at 0.1 Hz, indicative of robust corrosion protection. Remarkably, the self-healing performance of E/GH-0.3% and E/ GH-0.5% coatings was evidenced by the formation of a composite passivation layer at scratch sites, particularly pronounced after 40 days of immersion. These findings underscore the promising potential of the GH composite as an effective corrosion inhibitor, holding significant promise for the advancement of protective coatings in harsh coastal industrial environments.

Central bank digital currency (CBDC) is generally defined as the digital form of a country’s fiat currency. Based on the distributed ledger technology and other financial technology, CBDC could improve the efficiency of domestic and cross-border payments, increase payment safety and soundness, and promote financial inclusion. However, it is argued that the introduction of CBDC would threaten data security and invade personal privacy. Currently, this issue has received growing concern, and some recommendations are proposed by countries or international organizations, like privacy design, restrictions on public authorities and payment intermediaries, and establishing independent supervisory authority. Other suggestions include getting countries involved in international coordination and promoting the formation of unified standards. Among major economies, China is the first to launch CBDC, which is known as e-CNY. Based on an overview of the privacy protection legislation in China, this article attempts to describe the rules that should be followed when dealing with personal data generated in e-CNY circulation.

Amorphous molybdenum sulfide ( MoSx) has been regarded as a promising hydrogen evolution reaction (HER) catalyst due to its mild preparation conditions and low-cost precursor materials. In this work, we report a simple strategy combining the growth of amorphous MoSx on the surface of metal organic frameworks (ZIF-67) and annealing treatment to prepare Co-doped MoSx nanopolyhedrons (denoted as CoMoSx NPs). The CoMoSx NPs exhibit excellent HER activity in acid condition with an overpotential of 188 mV at a current density of 10 mA cm− 2 (η10), and a relatively stable overpotential after 2000 cyclic voltammetry (CV) cycles testing. The excellent HER performance of the CoMoSx NPs can be attributed to the doping of Co element adjust the electronic structure and increase the conductivity of catalyst, and the nanopolyhedrons structure which can expose more active sites for HER electrocatalytic. This study offers a low-cost and simple strategy to prepare high-activity HER catalyst, which holds great promises in developing advanced electrocatalysts for energy storage.

This research proposes the application of new technologies in tourism advertising to resonate with and respond to unconscious desires that are embodied within consumers. The ethnographic research first questions how consumers form their desires regarding tourism and illustrates that advertising does not create desire; consumer desires for travel, often embodied, exist before consumers are exposed to advertising messages. Such desires derive from past experiences, imagination and sensorial imageries learned from stimuli. Consumers react positively to multi-sensorial, empathetic messages. AI technologies, such as the convolutional neural network algorithm, can be used to apply traditional cultural symbols in art design (Lin 2021). Virtual mirror-based learning technology mirrors back to individuals their social network, identifying their most important contacts, influencers, and communication bottlenecks. The research aims to connect existing and future new technologies that provide the “posthuman mystic,” to offer consumers to experience a new level of their own being, giving room for different kinds of human relations--friendship, connection, and novelty --through one’s avatars (Bolger 2021) and to construct a “decentered, highly relational mode of reality giving agency to everyone, not only to all other humans, but to natural and technological subjects as well” (Delio 2020, p. 115). Such virtual world, with an example like the Metaverse, is “a combination of contextualization and wholemaking from the standpoint of posthumanism and mysticism” (Bolger 2021, p.768). The research then deciphers consumers’ positive reactions to websites that resonate with imagination sensorial desires, past experiences, desired activities and “LIVE” desires. Based on the findings, the research summarizes cross-disciplinary research of tourism advertising and new technologies 4.0 and conceptually illustrates how the applications of new technologies 4.0 may assist with the understanding of consumers’ multi-sensorial desires, imagination, and memories to design empathetic advertising messages. As such, advertisers may be in systematic dialogues with consumers and create multi-sensorial messages that resonate consumer desires.