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This research aims to analyze the formation of an optimal portfolio for LQ45 shares in the period before Covid-19 in 2017–2019 and the Covid-19 period in 2020–2022, as well as finding out which method performs better in forming an optimal portfolio. The object of this research includes stocks that are...

The influence of the G20 on world peace is urgently needed at this time. Awareness of the nation and state in various regions of the world, regionally, nationally and even internationally must always emphasize the benefit of humanity on earth. The reality of the global world today has caused anxiety...

Electric vehicles generally use batteries for energy storage, but currently there are designs for electric vehicle energy storage using supercapacitors (SC) or a combination of batteries and SC. In previous research, an electric motorcycle was made by converting Suzuki Shogun SP125 chassis, 800-1000...

A study on the tendency (preference) of farmers in the application of the six proper principles (P6T) in the application of pesticides to conventional farming communities has been carried out in several villages in Tanjungsari Sumedang District. The research objectives were (1) to describe the level...

Every individual requires food for nutritional support, without which the body suffers from various diseases such as gastric issues and low blood sugar. While there are many recipe websites, finding a suitable recipe can be time-consuming, especially for those who lack cooking knowledge with available...

Current seismic design provisions such as ASCE 7-10 provide criteria for selecting ground motions for conducting response history analysis. This study is the sequel of a companion paper (I - An accurate algorithm for selecting ground motions) for assessment of the ASCE 7-10 criteria. The results show...

Deep learning (DL) shows great vitality in all areas, but it rarely involves wireless communication. This paper proposes an automatic signal modulation recognition method based on deep convolutional neural network to solve common problems in wireless communication. The algorithm automatically extracts...

Spirituality is more acknowledged as an important aspect of practice counseling, but its integration into practice Still faces conceptual and practical challenges. This article aims to examine proof of the empirical role of spirituality in counseling with a focus on three questions: (1) how an integrated...

This study measures and investigates the digital economy's expansion in Vietnam's agriculture sector from 2008 to 2018. Input-out (I-O) tables from the OECD statistical database were used to assess the performance of ICT applications in creating Vietnam's digital agriculture sector and...

This study explores the catalytic properties of Pt-Ag-Co ternary alloys used for H2O2 reduction. All catalysts are prepared by impregnation reduction method and characterized by XRD and TEM. The electrochemical performance is examined by cyclic voltammetry (CV) at 25°C. The results show that Ag, Co and...

Adolescence is a transitional period from childhood to adulthood which is marked by changes in physical, cognitive, and psychosocial aspects. At this stage of development, adolescents often experience psychological problems such as eating disorders, anxiety, or even depression, and so forth. Various...

Performance assessment at shipyard companies only includes price criteria, product quality, and ownership of SKT as a registered supplier in the company. This performance assessment is considered not optimal so that there are problems caused by suppliers every year by different suppliers. Based on these...

The relationship between stock prices and economic development is well-established, and the study of stock price prediction methods is crucial for gaining insights into the economy. This research aims to enhance the accuracy of stock price prediction by leveraging a combination of convolutional neural...

Natural Language Processing has reached the stage of semantic analysis. As a tool for semantic analysis, semantic role labeling (SRL) is becoming more and more important. But the SRL is not specifically applied to the marine field in the past. So this paper is a study of SRL based on ocean big data....

Spring silkworms are not old, and the setting sun is red. At the beginning of its birth, short videos were favored by people aged 10 to 70 with their strong emotional mobilization ability, low threshold, low-cost access mode and fragmented browsing. With the rapid development of the digital age and the...

Ultra Performance convergence chromatography (UPC2) is cost effective, sustainable, and uses green technology that lowers the use of organic solvents. Based on this advantage, a method was developed for the determination of 15 phthalate esters by UPC2. The separation of 15 phthalate esters was achieved...

The purpose of this paper is to report on a study examining the developmental pragmatic competence of Chinese learner of English at different levels of grammatical proficiency. Bardovi-Harlig argues that although grammatical competence may not be a sufficient condition for pragmatic development, it may...

Lichen is one of the organisms with a high level of biodiversity and rich of antibacterial secondary metabolites compounds. One species of lichenes found in Kepahyang Indonesia is Teloschisthes flavicans. This study aims to find out an antibacterial effectiveness of Teloschisthes flavicans extract against...

Aging in society is now a global issue. Older adults comprise a big part of our society and their quality of life concerns the ability to live healthfully. The WHO (World Health Organization) explains, “Health is complete physical, mental, social, and spiritual well-being.” [10] This study focuses on...

The optimization of biogas production facilities represents a critical component in advancing sustainable energy strategies globally. This study investigates the relationships between biogas composition and electricity generation through comprehensive analysis of 10 months of operational data (August...

The development of white organic light emitting diodes (WOLEDs) holds great promise since they combine the potentialities of high efficiency and inexpensive production with the appealing features of high-color-quality white light. Nevertheless, reliability and color quality still need to be optimized...

Nowadays, a cafe is becoming a trend and growing rapidly in Medan. There are numerous people spend their time to socializing in cafes is part of the current life style. Therefore, cafe owners compete in offering new cafe concept to attract customers. To gain competitiveness and attractiveness, cafe must...

An urgent problem faced by the younger generation in the industrial revolution era, especially students is the lack of literacy culture that causes the inability of students to think critically about problems that occur, even relatively easily consumed by false news or false news. Facts on the ground...

The demand for hydrogen is expanding, which has led to research into hydrogen manufacturing. Analyzing options for lowering the environmental effect of petroleum-based fuels can be made easier with an understanding of the process by which biomass is transformed into hydrogen gas. This experiment evaluated...

To compete in the industrial revolution 4.0 era, a country must have qualified human resources. While the intelligence quotient (IQ) has been commonly used as a benchmark for the quality of human resources, according to Peter Drucker (2005), the quality of human resources in a country cannot only be...

Based on the 2008-2011 year marine statistics data, the efficiency of marine public service in coastal provinces of China is analyzed by data envelopment analysis (DEA), and the efficiency of marine public service is decomposed through the Malmquist index. From the calculation results: (1) from the time...

As a country that upholds democratic values, the Indonesian people periodically, every five years, elect leaders at the central, provincial and district / city levels. The crucial stage in the regional head election is the nomination. Candidate pairs of candidates must vote, through political parties...

A major challenge in Bengali Natural Language Processing (NLP) is the availability of annotated data. This research introduces an authentic, publicly available dataset collected from social networks in compliance with platform terms of service. The dataset includes 10 topic and 4 sentiment classes. The...

Recent reports on out-of-school children in Thailand suggest that providing alternative education for migrant children is urgently needed. More than 10% of Thailand’s out-of-school children (OOSC) were found in the Thailand-Myanmar border districts of Tak province. Thus, migrant learning centers (MLCs),...

Teachers’ belief is one of the components of personal competence that may affect classroom learning practices. Elementary school teachers’ belief will likely affect their classroom learning process. This descriptive survey depicts elementary teachers’ belief in Central Java. The data were collected from...

The design of effective and scientifically grounded policies for carbon mitigation relies on a thorough understanding of carbon emission sources and their relationship with economic growth. However, this relationship is rarely analyzed from an industrial chain perspective, particularly over long-term...

This paper proposes a semi-supervised approach of speech and music separation in monaural speech recordings based on non-negative matrix factorization (NMF). Considering the scenario that the genre of background music is known, music basis vectors are randomly picked from the magnitude of short time...

In order to develop a simple and facile method to fabricate a stable and even silver nanoparticles (Ag NPs) colloid solution, the multi-amino compound (RSD-NH2) as a highly effective self-reducing agent was used to reduce silver ions to Ag NPs. The Ag NPs showed a spherical structure with diameter of...

Facing the fourth industrial revolution (industry 4.0), Indonesia must be prepared to make major changes to the national manufacturing sector. For this reason, new approaches and abilities are needed in building innovative and sustainable production systems especially for vocational education. The type...

In this paper the design and analysis of annular ring slot microstrip antenna is presented. The design frequency of antenna is 2.1 GHz and used substrate for the fabrication of the proposed antenna is FR4. After simulation and testing return losses of about -14 dB, -14 dB, -19 dB and -10 dB are obtained...

The report presented by V.V. Putin to the Federal Assembly on February 20, 2019 focuses on the welfare of the population because the well-being is determined by the quality of human life. The Decree of the President of the Russian Federation of 07.05.2018 No. 204 "On the national goals and strategic...

Recently, Tanjung Lesung is known as one of the top 10 priority destinations in Indonesia. The Indonesian government has designated Tanjung Lesung as a priority destination with high tourism potential and needs to be increased in popularity along with Toba Lake, Tanjung Kelayang, Mandalika, Wakatobi,...

The testing stage is the most important part of the web application development cycle. Testing is carried out when the web application is completed before being implemented by the user. The method of testing web applications is determined based on quality factors that have been agreed upon between the...

Akar kaik-kaik (Uncaria cordata) or known as hook vine is one of the medicinal plants whose leaves are used in traditional medicine as an antidiabetic by the people of Riau. Other than that, this plant also has potential as an antimicrobial agent due to the dominant of alkaloid content possessed by members...

An exhaustive study should be carried on Crumb Rubber Concrete deterioration caused by sulphate attack in this paper. the crumbed tire rubber powder were used to replace fine aggregates of concrete, whose grain size is 0.28mm. The replacement levels were 5%, 10%, 15% and 20 % by volume of the fine aggregates....

In the automobile manufacturing sector in Pune, India, this study aimed to assess the awareness, adoption & effectiveness of Human Resource Accounting (HRA) practices. Using a mixed-method approach, data from 217 professionals in 14 Original Equipment Manufacturers (OEMs) were retrieved from a mix...

The aim of this study was to analyze the heat transform models of phase change diving suit on the basis of the steady-heat transform theory, and determined the suitable melting temperature and latent heat of phase change materials impregnated in different suits. An insulation performance test was conducted...

Plastic waste is one of the most numerous in number, approximately 10 % of the total waste in the world. Plastic packaging, grocery bags, and home furnishings are the types that often found. There have been many efforts to reduce the amount of waste and the impact it causes, one of them is the up-cycling...

A country would be in peace and prosperity and grow well, if the leader leads with integrity and wisefulness. Therefore, clear and firm arrangements are needed in selecting candidates for regional heads who are ex-convicts. And the task of the state is in accordance with the mandate of the Pancasila...

Conventional sizes of banana false seeding as material, using pot experiment, the three growth promoters of the growth of the transplanting seedlings, nutrient uptake and resistant physiological effects. Results show that compared with the control, spraying the growth promoters of this experiment can...

The purposes of this research are to find out: 1) the description of economic growth and human development in South Sulawesi, 2) the relationship between economic growth and human development in South Sulawesi, and 3) the cointegration relationship between economic growth and human development in South...

The relevance of the study is due to the importance of China as one of the main leaders of world social and economic development. China's economy has been developing for the last four decades in a row (1978-2018) almost without crises, at high rates, sometimes adding 10% a year [8]. Today, China is the...

In this paper analysis of multilayered antenna is done by considering two approaches in which stacked patch is realized with common dielectric and in other approach stacked patch is realized with different dielectric substrates. Both the approaches are analyzed commonly with 10% reduction in dimensions...

The purpose of this study was to examine whether being socially withdrawn would have an impact on friendship qualities and whether the negative impact of being socially aloof would extend to dyadic relationships. Furthermore, the differences between shy and unsociable children in terms of friendship...

Faced with the severe climate change situation, major economies around the world, such as the European Union (EU), the United States, China, and Japan, have gradually formulated carbon reduction policies to combat climate change. As the world’s top economy, the EU has long been actively promoting the...