Investigation on Applicability and Limitation of Cosine Similarity-Based Structural Condition Monitoring for Gageocho Offshore Structure

The key to coping with global warming is reconstructing energy governance from carbon-based to sustainable resources. Offshore energy sources, such as offshore wind turbines, are promising alternatives. However, the abnormal climate is a potential threat to the safety of offshore structures because construction guidelines cannot embrace climate outliers. A cosine similarity-based maintenance strategy may be a possible solution for managing and mitigating these risks. However, a study reporting its application to an actual field structure has not yet been reported. Thus, as an initial study, this study investigated whether the technique is applicable or whether it has limitations in the real field using an actual example, the Gageocho Ocean Research Station. Consequently, it was found that damage can only be detected correctly if the damage states are very similar to the comparison target database. Therefore, the high accuracy of natural frequencies, including environmental effects, should be ensured. Specifically, damage scenarios must be carefully designed, and an alternative is to devise more efficient techniques that can compensate for the present procedure.

Sustainability Enhancement Through Information Technology in Higher Education

The quick evolution and development of digital technologies contribute to changes and turning points in every aspect of the modern society. Managing these the digital changes and turning them into long-term sustainable solutions for higher education could be a real challenge. Technology offers immeasurable opportunities to the learning environment and higher education is rapidly integrating information and communication technology (ICT). This paper is discussing the concept of enhanced sustainability in education through learning technologies like applications, electronic resources, and teaching methods for educational development. Technology in higher education is particularly important, therefore it is important to assess the quality that it can provide and the impact on sustainable education. The educational system has been also harshly affected by the latest pandemic situation, which brought significant consequences on the social, economic, and cultural life worldwide. This paper aims to contribute with insights to the literature in the field, by emphasizing that the latest situation around the world could be a great opportunity for further implementation and development of digital technologies for sustainable learning. The methodology used for fulfilling the study goal is a qualitative one, particularly the technique used is data analysis from secondary sources. The results of this analysis lead to the conclusion that there is need and room for improvement of digital sustainable resources in higher education, which includes the challenges that the academic environment face and need to overcome if their goal is to stay relevant on the education market.

Determining the Adsorption Energetics of 2,3-Butanediol on RuO2(110): Coupling First-Principles Calculations With Global Optimizers

As climate change continues to pose a threat to the Earth due to the disrupted carbon cycles and fossil fuel resources remain finite, new sources of sustainable hydrocarbons must be explored. 2,3-butanediol is a potential source to produce butene because of its sustainability as a biomass-derived sugar. Butene is an attractive product because it can be used as a precursor to jet fuel, categorizing this work in the alcohol-to-jet pathway. While studies have explored the conversion of 2,3-butanediol to butene, little is understood about the fundamental reaction itself. We quantify the energetics for three pathways that were reported in the literature in the absence of a catalyst. One of these pathways forms a 1,3-butadiene intermediate, which is a highly exothermic process and thus is unlikely to occur since 2,3-butanediol likely gets thermodynamically trapped at this intermediate. We further determined the corresponding energetics of 2,3-butanediol adsorption on an ensemble of predetermined binding sites when it interacts with a defect-free stoichiometric RuO2(110) surface. Within this ensemble of adsorption sites, the most favorable site has 2,3-butanediol covering a Ru 5–coordinated cation. This approach is compared to that obtained using the global optimization algorithm as implemented in the Northwest Potential Energy Surface Search Engine. When using such a global optimization algorithm, we determined a more favorable ground-state structure that was missed during the manual adsorption site testing, with an adsorption energy of −2.61 eV as compared to −2.34 eV when using the ensemble-based approach. We hypothesize that the dehydration reaction requires a stronger chemical bond, which could necessitate the formation of oxygen vacancies. As such, this study has taken the first step toward the utilization of a global optimization algorithm for the rational design of Ru-based catalysts toward the formation of butene from sustainable resources.

Towards the Circular Soil Concept: Optimization of Engineered Soils for Green Infrastructure Application

At conventional construction sites, the removal of soil and other excavated materials causes enormous mass movement, with a significant climate impact and contribution to global CO2 release. This study aimed to generate a Circular Soil concept for reusing excavated materials by creating engineered soils for landscape construction at large building sites. Engineered soils act as a substitute for natural soils and fulfill vital technical and soil functions when installing an urban green infrastructure (GI). In a field study, the vegetation performance on engineered soils was evaluated to establish a methodological approach, to assess the applicability of the Circular Soil concept. First, the technical specifications (grain-size distribution) were modeled for intensive green roof and turfgrass applications. Then, the soil components were optimized, mixed, installed and tested for greenery purposes, focusing on plant growth performance indicators (vitality, projective cover ratio and grass-herb ratio) to assess the vegetation performance. The results showed that the engineered soils match the performance of the reference soil alternatives. In conclusion, the Circular Soil concept has a high potential to contribute considerably to sustainable on-site soil management and the circular economy. It can be applied on a larger scale for urban GI development and sustainable resources management in the landscaping and construction sector.

Preparation of Transparent Fast-Growing Poplar Veneers with a Superior Optical Performance, Excellent Mechanical Properties, and Thermal Insulation by Acetylation Modification Using a Green Catalyst

There has been growing interest in transparent conductive substrates due to the prevailing flexible electron devices and the need for sustainable resources. In this study, we demonstrated a transparent fast-growing poplar veneers prepared by acetylated modification, followed by the infiltration of epoxy resin. The work mainly focused on the effect of acetylation treatment using a green catalyst of 4-Dimethylpyridine on the interface of the bulk fast-growing poplar veneer, and the result indicated that the interface hydrophobicity was greatly enhanced due to the higher substitute of acetyl groups; therefore, the interface compatibility between the cell wall and epoxy resin was improved. The obtained transparent fast-growing poplar veneers, hereafter referred to as TADPV, displayed a superior optical performance and flexibility, in which the light transmittance and haze were 90% and 70% at a wavelength of 550 nm, respectively, and the bending radius and bending angle parallel to grain of TADPV were 2 mm and 130°, respectively. Moreover, the tensile strength and tensile modulus of the TADPV were around 102 MPa and 198 MPa, respectively, which is significantly better than those of the plastic substrates used in flexible electron devices. At the same time, the thermal conductivity tests indicated that TADPV has a low coefficient of thermal conductivity of 0.34 Wm−1 K−1, which can completely meet the needs of transparent conductive substrates. Therefore, the obtained TADPV can be used as a candidate for a flexible transparent substrate of electron devices.

Examining the association between stock return and seasonally adjusted trade in India

This paper aims to examine the association between Indian stock market return and seasonally adjusted trade for Indian Banking sector shares. The objective of the study is to measure the association between stock return and seasonally adjusted trade in the Indian stock market and recommend strategies. Due to the Covid 19 outbreak banking sector was highly affected, the Government of India also announced a moratorium on all categories of loans, banking business majorly depending on the deposit and loan creation, so the Government decision threaten the banking sector. Many private sector banks terminated temporary staff because of cut cost policies. We divided the banking sector into three segments. Namely, Public, Private and Small Finance Banks. Utilizing daily data from February 2020 to July 2020, consisting of 2196 in numbers, we ran a panel Vector Autoregression model to analyze the association. It was found that the return of stocks is influencing the volume of trade during this period. Also, while measuring the short-run causality, it is found that the return of banking stocks specifically granger causes the volume of trade. The suggestions of the study lie in providing importance to framing policies on improving the financial health of the economy through different fiscal policies. Strategic policies are required to face post-Covid situations. The turnaround strategies to combat the effects of the pandemic are characterized by the availability of the sustainable resources of the particular sector in consideration.

THE TRADITIONAL CEREMONIES OF TENGGER TRIBE AS A SUSTAINABLE TOURISM OBJECT IN INDONESIA

Traditional ceremonies are one of cultural representation that is passed from generations. The public interest in traditional ceremonies was decreased by the time, especially for the younger generation. This study aimed to describe traditional ceremony activities in the Tengger tribe as sustainable tourism objects. The research method is descriptive qualitative using field survey. Data is collected through literature review, observation, and interviews. In-depth interviews were conducted with key informants with extensive knowledge and experience about the research object. The research object is traditional ceremonies such as Kasodo, Karo, and Unan-Unan. Triangulation method was used to test the validity and reliability of research data. The result found that the Yadnya Kasodo is a spiritual ceremony aimed to purify nature and carried out as gratitude to God by offering agricultural goods (sajen) and ongkek. The agricultural goods managed by the community to be used in the ceremony are flowers, fruits, vegetables, and livestock products. This traditional procession is closely related to the Bromo Tengger Semeru National Park spatial layout. Traditional ceremonial activities could become objects of sustainable tourism and are supported by sustainable resources.

Determining Factors Affecting Customer Intention to Use Rooftop Solar Photovoltaics in Indonesia

Many developing countries on the equator, including Indonesia, have the potential for renewable and sustainable resources, such as solar energy. However, despite the enormous potential, the adoption level remains low. Previously, several studies discussed the potential, the feasibility, and the supporting policy of this technology, but none have been discussed from the customers’ perspective on a national scale. Therefore, this study attempts to determine the factors affecting the customers’ intention to use solar photovoltaics in Indonesia to develop a sustainable circular supply chain for renewable energy. This investigation was conducted based on integrating the unified theory of acceptance and use of technology 2 (UTAUT2) and the theory of planned behaviour (TPB). Furthermore, an online questionnaire was successfully distributed with a total of 208 participants. Structural equation modeling (SEM) was utilized to derive the causal relationships of the proposed hypotheses. The results indicated that price value (PV) has a positive relationship and a significant influence on attitude toward use (ATU), which leads to the behavioral intention (BI) to make the construct the most affecting factor. This is the first comprehensive study to analyze the intention to use rooftop solar panels based on the UTAUT2 and TPB framework. The successful approach to support photovoltaic use will bring less waste and strengthen the circular supply chain to support sustainable development.

Cropping pattern simulation-optimization model for water use efficiency and economic return

Sustainable agricultural development is one of the most important tools for the economic growth of a country. Therefore, water and land use management is considered a priority. This research aimed to develop a framework to optimize crops’ spatial and temporal distribution in an irrigation district. The AquaCrop- OS (FAO) water productivity model was integrated with a nonlinear optimization model to maximize the annual net profitability and minimize the water consumption of three crops (rice, corn, and forage). It was applied at a regional level to 905 simulation sub-units in the Zulia irrigation district (Colombia), in three typical climatic years’ scenarios, and at a multi-period level (monthly). The results indicated that: i) crop simulation for the study area was applicable and feasible; ii) rice can be combined with forage and corn; iii) corn is a viable option under dry year conditions; iv) under a wet year, forage production is the best option. On average, in the dry year, profitability decreased by 14.5% compared to the normal year in half of the study area, and in some areas, economic losses of up to 53% were obtained. In the wet year, profitability remained at the same level as the normal year in 43.8% of the area. However, there were significant decreases in profitability in 23.1% of the district. In the normal year, the water demand of the crops in each simulated period allows savings of up to 50% of water compared to the current concession amount, which is 1000 mm. This study is useful for making decisions on sustainable resources management and optimal irrigation water and land use under different biophysical and economic conditions.

HAM Gene Family and Shoot Meristem Development

Land plants develop highly diversified shoot architectures, all of which are derived from the pluripotent stem cells in shoot apical meristems (SAMs). As sustainable resources for continuous organ formation in the aboveground tissues, SAMs play an important role in determining plant yield and biomass production. In this review, we summarize recent advances in understanding one group of key regulators – the HAIRY MERISTEM (HAM) family GRAS domain proteins – in shoot meristems. We highlight the functions of HAM family members in dictating shoot stem cell initiation and proliferation, the signaling cascade that shapes HAM expression domains in shoot meristems, and the conservation and diversification of HAM family members in land plants. We also discuss future directions that potentially lead to a more comprehensive view of the HAM gene family and stem cell homeostasis in land plants.