bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on the influence of some factors on the high burning rate of energy-carrying materials based on acrylonitrile butadiene rubber with end-chain carboxyl group
Authors:   Institute of Propellants and Explosives, General Department of Defense Industry, 192 Duc Giang Street, Thuong Thanh Ward, Long Bien District, Hanoi, Vietnam, Nguyen Duc Long , Nguyen Van Hung ,   Institute of Propellants and Explosives, General Department of Defense Industry, 192 Duc Giang Street, Thuong Thanh Ward, Long Bien District, Hanoi, Vietnam, Tran Huu Thanh ,   Institute of Propellants and Explosives, General Department of Defense Industry, 192 Duc Giang Street, Thuong Thanh Ward, Long Bien District, Hanoi, Vietnam, Doan Van Diep ,   Institute of Propellants and Explosives, General Department of Defense Industry, 192 Duc Giang Street, Thuong Thanh Ward, Long Bien District, Hanoi, Vietnam, Hoang Van Hung ,   Institute of Propellants and Explosives, General Department of Defense Industry, 192 Duc Giang Street, Thuong Thanh Ward, Long Bien District, Hanoi, Vietnam
Published: November 2023

Heterogeneous energy-carrying materials possess outstanding advantages compared to other energy-carrying materials, therefore, research and development of this type of material to create propulsion for flying objects is an inevitable trend in the field of military science and space. This paper presents the results of research on the influence of a number of factors on the technological properties and combustion rate of heterogeneous energy-carrying materials based on acrylonitrile butadiene rubber CKH-10KTP and ammonium perchlorate (AP).The research results show that the combustion law depends on the pressure of heterogeneous energy-carrying materials based on CKH-10KTP and ultra-fine AP (specific surface area 2.61÷3.85 m2/g), using a combustion catalyst ferrocene derivative. The study also determined the optimal content of combustion catalyst - plasticiser to be 3.5÷3.8%. The research results are a solid scientific basis for optimally determining the parameters of radioactivity, energy of energy-carrying materials, supplementing the national data source in the design of aircraft engines, meeting requirements in the new context.
In silico and in vitro study on apoptosis in MCF-7 human breast cancer cells lines via caspase-3 activation of Markhacanasin A
Authors:   Faculty of Chemistry, University of Science, Vietnam National University - Ho Chi Minh City, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam, Nguyen Quoc Trung , Nguyen Khanh Hung ,   Faculty of Chemistry, University of Science, Vietnam National University - Ho Chi Minh City, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam, Ngo Trong Nghia ,   Faculty of Environment and Natural Resources, Kien Giang University, 320A Highway 61, Minh Luong Town, Chau Thanh District, Kien Giang Province, Vietnam, Nguyen Tan Phat ,   Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29 Street, Thanh Loc Ward, District 12, Ho Chi Minh City, Vietnam
Published: November 2023

Markhacanasin A (MA), a cycloartane-type triterpenoid was isolated from the leaves of Markhamia stipulata var. canaense V.S. Dang, collected in Ninh Thuan province, Vietnam. In our previous study, it was found that MA possessed potential cytotoxicity against MCF-7 human breast cancer cell lines, with an IC50=16.51±0.22 μM. However, the mechanism by which MA triggers apoptosis in the MCF-7 cells has not been explored yet. Therefore, this study has been conducted to investigate the mechanism of apoptosis induction in the MCF-7 cell lines by MA. The study utilised the flow cytometry method and molecular docking patterns analysis of caspase-3, caspase-8, caspase-9, Apaf-1, and survivin. Interestingly, the results have demonstrated that MA induces apoptosis in the MCF-7 cell line by activating the caspase-3 enzyme, both in vitro and in silico, which suggests that MA may have therapeutic potential as a breast cancer treatment agent. This study provides new insights into the mechanism of action of MA and highlights its potential as a promising therapeutic option for breast cancer.
Fabrication and properties of Fe3O4/C composite materials
Authors:   1International Training Institute for Materials Science, Hanoi University of Science and Technology, 1 Dai Co Viet Street, Bach Khoa Ward, Hai Ba Trung District, Hanoi, Vietnam, Bui Thi Hang , Doan Ha Thang ,   Vietnam Space Committee Office, Ministry of Science and Technology, 113 Tran Duy Hung Street, Trung Hoa Ward, Cau Giay District, Hanoi, Vietnam
Published: November 2023

Climate change is currently one of the most serious problems facing the world. In this study, Fe3O4 powder was used as electrode active material, nanocarbon was used as an additive to fabricate Fe3O4/C composites applying for energy storage systems. The size and morphology of iron oxide and nanocarbon were investigated by scanning electron microscopy. The effects of the additive, the content of the electrode components on the electrochemical properties of the Fe3O4/C composite electrode have been studied by cyclic voltammetry. The results showed that the content of the electrode components strongly affects the electrochemical characteristics of the electrode. The important role of the carbon additive in the Fe3O4/C composite electrode was confirmed: Nanocarbon increases the electrical conductivity of the electrode thereby enhancing the redox reaction rate of iron. The positive effect of the K2S additive in electrolyte was demonstrated by increased redox reaction rate of iron, improved cyclability of Fe3O4, reduced hydrogen evolution, and thus increased the discharge capacity of Fe3O4/C.
Dampak dari Penanganan Pandemi COVID-19 Terhadap Penanaman Modal Asing Langsung di Indonesia
Authors: Putri Bianda Nathania
Published: November 2023

Investment is an activity with the aim to seek long-term profits by buying stocks or securities. One of other types of investment is Foreign Direct Investment (FDI) which focused on investment activity to do business in a country carried out by foreign nationals with foreign capital or in partnership with domestic investors. FDI has many benefits for the host country and as the investing party, in the form of enriching the countries, industrial and technological progress, and increasing economic growth. But behind all benefits, in doing FDI there are risks that can be faced by foreign investors. These risks are triggered by political instability, inconsistency and incompetence of law enforcement, weak economy in a country, and can also be triggered by the spread of a disease on a massive scale. This research uses normative juridicial aapproach method and uses a qualitative approach. The result of this study shows that political, legal, and economic risks in a country have a negative impact on FDI and foreign investors. Furthermore, the COVID-19 pandemic and the handling by the Indonesian Government are in fact inconsistent and unresponsive which cause a domino effect on society, FDI, and also foreign investors.
Enzyme Related Synthesis of Lipids and Fabrication of Planar Lipid Membranes
Authors: Suneth P. Rajapaksha  , M.A.A. Aqeel
Published: November 2023

Biological membranes are structurally and functionally complex supramolecular assemblies. The intricate complexity itself poses a significant barrier in investigating the constituents, components, and their structure-activity relationships. Scientists employ twosynthetic methods to reduce complexity: the top-down approach and the bottom-up approach. The top-down synthetic approach involves genome reduction of the living cell, leading to a collateral reduction in membrane complexity. In contrast, the bottom-upsynthetic approach like chemical and enzymatic synthesis engages assembly of non-living components to construct biomimetic membrane structures with desired complexity. The synthetic routes catalyzed by enzymes are referred to as enzymatic synthesis, while routes utilizing a combination of catalytic systems and enzymes are known as chemo-enzymatic synthesis. The lipids prepared by enzymatic or chemo-enzymatic method are essential to integrate into a membrane in a manner that makes them amenable to various analytical techniques. Planar lipid bilayer method is one such versatile technique which can be used to prepare membranes from individual lipid molecules to utilize in various analytical procedures. Two planar lipid membranes types, black lipid membrane and supported lipid membrane, are more common than other types due to their less complexity in preparation. This review discusses the enzyme related synthesis of lipids, the method of preparation and challenges involved in fabricating black lipid membrane and supported lipid membrane models.
Hagamos: la alternativa de un nuevo partido por y para Jalisco
Authors: Robles Mara
Published: November 2023

En este texto comparto la experiencia de esta campaña con un partido local de nueva creación, Hagamos. Casi sin filtros, les narraré a continuación las ideas, motivaciones, alegrías y vicisitudes de esta campaña para obtener una nueva representación ciudadana que pretende recoger la experiencia y la exigencia que me ha brindado estar cerca de tantos luchadores valiosos.
Encuestas, metodología e impacto: una aproximación a la cultura de la evidencia en Jalisco
Authors: Rodea García Sergio Emiliano
Published: November 2023

Este capítulo se sustenta en el trabajo y la experiencia, primero, de acompañar campañas políticas, de diferentes candidatos y en estados como Michoacán y Jalisco, durante más de 15 años, y de hacer estudios de opinión y estrategias de comunicación publicitaria. Segundo, de realizar investigación de mercados y opinión pública desde hace 22 años en Lamarcalab, espacio acreditado con el certificado ESIMM de calidad para la investigación de mercados, tanto dentro como fuera de México.
Customs books of Russia in the 16th – 18th centuries: quantitative, chronological and geographical composition
Authors:   St. Petersburg Institute of History of the Russian Academy of Sciences, St. Petersburg, Russia, Razdorsky Alexey I.
Published: November 2023

The article presents preliminary results of identifying Russia customs books in the 16th–18th centuries in archives, libraries and museums. Data on the quantitative, chronological and geographical composition of the sources under consideration are given, their distribution between different regions of the country is shown, cities for which the most numerous complexes of customs books have been preserved are listed. The appendix contains a table that includes information on the number and chronology of customs books and synchronous complexes of these documents for individual settlements.
Collection of trade and customs duties in cities of the Zaporozhian Host to the tsar treasury in 1666–1668
Authors:   State Academic University of Humanities, Moscow, Russia, Almazov Alexander S.
Published: November 2023

The paper is devoted to the consideration of the issues related to collection of customs and trade duties to the tsar treasury on the territory of the Zaporozhian Host during the period from 1666 to 1668. The author analyzes the question of how the system of collecting duties changed after they were redirected to the tsar treasury as a result of a tax reform. Besides that, special attention is paid to information about customs heads (“tamozhennye golovy”) and tselovalniks, the principles of collection as well as the share of duties in the total income of Russian voivode administrations in Ukrainian cities. The paper also addresses the issue of the struggle of burghers for the right not to pay trade and customs duties to the tsar treasury.
The assortment of Murashkin sheepskin goods at the Nizhny Novgorod fair at the beginning of the 20th century
Authors:   Nizhny Novgorod Institute for the Development of Education, Nizhny Novgorod, Russia, Ledrov Sergey M.
Published: November 2023

At the beginning of the 20th century the Bolshoe Murashkino village in the Nizhny Novgorod province remained the largest center of sheepskin and fur production in Russia and one of the main suppliers of sheepskin and fur goods at the Nizhny Novgorod fair. In the article, based on data from annual reports on fair trade, the assortment of Murashkino goods, which consisted of five groups, was studied, the names of the varieties of sheepskin and fur products of each of them are listed, and it has been also revealed by what signs a variety name was determined. A comparison with the assortment of other centers of domestic sheepskin and fur production has been carried out. The conclusion has been done that, in general, the Murashkinsky assortment was exceptional in terms of variety of types, especially dressed sheepskin and fur semi-finished products.
Advertising of children’s goods in the Russian regional and central press in the early 20th century
Authors:   Orenburg State Pedagogical University, Orenburg, Russia, Burlutskaya Elena V.
Published: November 2023

The article is devoted to the presentation of children’s goods in the advertisements in the central and regional press in the early 20th century. The illustrated magazine “Niva”, the children’s magazine “Putevodny Ogonek” and the newspaper “Orenburg Leaf” were used as sources of information. These print media were widely represented in Orenburg during the period under study. The author has analyzed the assortment of the children’s products and the ways of their promotion on the market. It was found out that the most frequent advertisements were those about baby food, baby cosmetics or dietary supplements. Thus, the main concern of parents, according to advertisers, was the physical health of children. The main target of the advertising was women, mothers. In addition to text, visual advertising of children’s goods, including images of children themselves, gradually began to appear in the publications, which simplified and emotionally enhanced the perception of advertising information.
“The Prasols sought to break big profits”: buyers of bread in the Yeniseisk province in the second half of the 19th century (based on materials of Siberian newspapers)
Authors:   Khakass Research Institute of Language, Literature and History, Abakan, Russia, Kiskidosova Tatiana A.
Published: November 2023

The article deals with speculative trade in bread in the Yeniseisk province in the second half of the 19th century. The author based on the materials of Siberian newspapers devoted to this issue. It is shown that most of the publications were accusatory in nature and were directed against buyers. In general, the journalists sought to attract the attention of local authorities to regulate the prices of bread and stop speculative trading.
Entrepreneurship in the East of Russia in the second half of 1918 – 1919
Authors:   Institute of History of the Siberian Academi of the Russian Academy of Sciences, Novosibirsk, Russia, Rynkov Vadim M.
Published: November 2023

The article analyzes the restoration of the activity of business organizations in the east of Russia, the policy of the anti-Bolshevik governments in relation to trade and industry, measures to restore business activity of population. The author came to conclusion that the government paid great attention to legal instruments of influence on the economy, including interaction with the business community, but it was also forced to maintain active interference in the rights of private owners. Entrepreneurs adapted to the situation, and using illegal business practices as well.
Political positions of Siberian entrepreneurs in the late 1917 – December, 1919
Authors:   Institute of History of the Siberian Academi of the Russian Academy of Sciences, Novosibirsk, Russia, Shilovskiy Mikhail V.
Published: November 2023

The paper analyzes the attitudes demonstrated by the Siberian entrepreneurs and their groups to the significant political phenomena in the social and political life of the region during the period of the 1917 social cataclysm and the Civil War of 1918–1922. The idea of regional autonomy was supported by the bourgeois and Kadets circles in 1917 – the first half of 1918. The position of “tsenzoviki” radically changed after the overthrow of Soviet power and manifested itself in the demand for the establishment of non-partisan dictatorship. The commercial and entrepreneurial circles supported the dictatorship of A. V. Kolchak.
Commercial grain procurement in 1922/23 in the USSR: paradoxes of conjuncture
Authors:   Institute of History of the Siberian Academi of the Russian Academy of Sciences, Novosibirsk, Russia, Il’inykh Vladimir A.
Published: November 2023

The article considers the course and results of the campaign on commercial grain procurement in 1922/23 in the USSR. It was found out that the supply of grain this year exceeded the demand. The state was preparing for commercial purchases, establishing a number of large procurement organizations in the summer of 1922. Their tasks included harvesting the maximum possible amount of grain products on the market and thereby limiting the scope of private capital activity. However, these plans actually failed. State-backed procurement organizations were unable to compete with private traders. Most of the grain sold on the market fell into the hands of private owners.
Virgin in a Condom and Te Papa: 25 Years On
Authors: Stocker Mark
Published: November 2023

One of Aotearoa New Zealand's greatest art controversies was caused by a disproportionately tiny 105-millimeter-high assemblage by Tania Kovats, Virgin in a Condom (1992) (see Figure 1). It featured in the British Council touring exhibition Pictura Britannica: Art from Britain, held at the Museum of New Zealand Te Papa Tongarewa (Te Papa), Wellington, from 1 March to 26 April 1998, opening just fifteen days after the museum itself. Thirty-three thousand people signed a Catholic Communications Office petition demanding the Virgin's removal. Thousands of phone calls, many abusive, bombarded Te Papa's Enquiry Centre. The display case was vandalized twice and a nearby visitor host assaulted. The controversy was repeatedly televised, culminating in a TV3 debate. Column meters of press coverage included a Sunday Star-Times (Auckland) article and 250 letters in Wellington newspapers alone. The BBC World Service Focus on Faith made the controversy its lead item (Stocker 2021: 81–82). Hence, critic Justin Paton warned in his New Zealand Listener article: “Yes, this is another article devoted to a certain religious statue sheathed in a certain birth-control device, but do not change the channel yet” (Paton 1998: 42).
Dispatches
Authors: Kernohan Kirsty , Lynch Bernadette , Bell Lucy , Gwasira Goodman , Sanan Sophia Olivia , Mataga Jesmael
Published: November 2023

The Poignant collection of more than 17,500 photographs and associated archival material reflects the work of Axel Poignant (1906–1986), who established his career as a portrait photographer in Australia, and the anthropologist Roslyn Poignant (1927–2019). Bequeathed by Roslyn to the Museum of Archaeology and Anthropology (MAA), Cambridge upon her death in 2019, the collection came into the care of MAA in 2021.
ROLE OF IMPULSIVITY AND ITS TYPES IN THE STRUCTURE OF BIPOLAR AFFECTIVE DISORDER
Authors:   Kirov Military Medical Academy, St. Petersburg, Russia, Markin Kirill V. , Shamrey Vladislav K. ,   Kirov Military Medical Academy, St. Petersburg, Russia, Tarumov Dmitriy A. ,   Kirov Military Medical Academy, St. Petersburg, Russia
Published: November 2023

Elevated levels of impulsivity often characterize patients with bipolar affective disorder (BD). However, it remains unclear whether the characteristics of impulsivity and its types depend on the solid phase of the disease and the severity of symptoms, as well as comorbid conditions and psychopharmacotherapy. Fifty-one patients diagnosed with BD and 61 respondents without psychiatric characteristics were assessed, including impulsivity with the Barratt Self-Interview Survey (BIS-11) and temperament with the Cloninger Temperament and Character Inventory (TCI). Statistical data processing included comparing means, analysis of variance with posterior tests, and correlation analysis. BD patients were characterized by an increased level of impulsivity regardless of the actual phase of the disease (t (76.2) = 7.04; p < 0.001). Euthymia patients were significantly more impulsive compared to the control group (t (107) = 3.95; p < 0.001), whereas patients were characterized by increases in all types of impulsivity (F (3) = 19.0; p < 0.001). There were associations of the impulsivity level with the severity of depressive (r = 0.502; p < 0.001) and manic symptoms (rho = 0.302; p = 0.035) as well as temperament traits such as reward dependence (r = -0.312; p = 0.029) and novelty seeker (r = 0.525; p < 0.001). Impulsivity assessment can serve as an essential diagnostic tool in the clinical evaluation of a patient with suspected BD.
Predictive analytics for inventory optimization
Authors:   Department of Decision Sciences, University of Moratuwa, Sri Lanka, Comester K.F.R.F. , Gunathilake P.G.M.P. , Godakumbura S.K. , Begum M.M.F.M. , Amaranath D.D.R.R. , Mahakalanda I. , De Silva T.
Published: November 2023

In 2021, the Sri Lankan apparel manufacturing industry faced a severe downturn due to the COVID-19 pandemic and economic crises, highlighting the need for accurate sales predictions amid global supply chain disruptions. Traditional statistical models struggle to handle such crises, necessitating the exploration of machine learning methods for forecasting sales. This study aimed to identify the most effective predictive models for finished apparel goods sales, addressing data complexities like seasonality, trend, and stationarity, with a focus on enhancing decision-making in the industry. The dataset consisted of 128 weekly records of point-of-sale (POS) data for three specific apparel items sold in the US and manufactured in Sri Lanka, spanning from January 2021 to June 2023. Also, the inflation rate in the USA is used as an exogenous variable. Data preprocessing began with rationalization, followed by splitting it into training and testing sets. Two models, ARIMA and SARIMAX, were constructed using the training data to analyze the time series. Model performance was assessed using Mean Square Error (MSE), with the goal of generating future sales predictions. The results indicated that the ARIMA model outperformed SARIMAX, exhibiting significantly lower MSE values. This outcome suggests that ARIMA is the superior model for forecasting sales in this context. Future research aims to validate this result by incorporating additional datasets, ensuring the continued effectiveness of the ARIMA model in predicting apparel sales. In conclusion, this study highlights the critical role of advanced machine learning techniques, in improving sales predictions for the Sri Lankan apparel manufacturing industry. By addressing data complexities and employing robust validation methods, this research contributes to more precise planning and decision-making, essential for navigating disruptions in the global supply chain and economic uncertainties.
Performance improvement of a car wheel alignment centre: an application of discrete events simulation
Authors:   Department of Mechanical and Manufacturing Technology, University of Vocational Technology, Sri Lanka, Lankapura W.K. , Wettasinghe J.
Published: November 2023

Customer satisfaction is one of the major important aspects of any production-oriented or service-oriented organization. Any firm must ensure that they are capable of satisfying the customer’s requirements while gaining a financial benefit through the business operation. If an organization can fulfil the needs of the customer while having financial benefits at the same time, the organization will be able to sustain the business. The study aims at the performances of a particular car wheel alignment center. The major problem associated with this process is the formation of a vehicle queue during the mornings of weekends. To address the aforesaid problem, this study first attempts to simulate the current situation of the real process using discrete event simulation software, and then evaluates the performances by changing the state parameters on it. In the simulation study, the assumptions and simplifications made on the arrival pattern, inter-arrival times and the average service time. From the simulation study, it is clearly observed that the queue length has a significant impact on the number of servers. At once, it can be clearly noticed that the number of service bays can be increased to eliminate the queues. With the aid of simulation trials using three and four servers, the results clearly showed that there is a reduction in the queue length when more servers are added. However, with a detailed cost-benefit analysis followed by the simulation trials conducted, it can be concluded that the addition of another server will be optimal. Also, the cost-benefit analysis shows that, after a time period of 12 months the initial capital can be recovered.
Awareness of green supply chain management practices of Sri Lankan SMEs
Authors:   Department of Industrial Quality Management, General Sir John Kotelawala Defense University, Sri Lanka, Ashoka A.N.D. , Jayasooriya S.D. , Galahitiyawe N.W.K. ,   Department of Decision Sciences, University of Sri Jayewardenepura, Sri Lanka
Published: November 2023

As many economies embrace global supply systems, there is a pressing need to focus on reducing the supply chains' adverse environmental impact. Green Supply Chain Management (GSCM), is an alternative idea that combines supply chain effectiveness with environmental considerations. GSCM is a powerful tool for distinguishing or separating a company from its competitors, and it can have a substantial impact on the company's success strategy. It is becoming more significant for Sri Lankan SMEs as they become more attentive to corporate social responsibility and the obligation to follow the terms of eco-friendly policy. Recently, it was found that there are many issues in the area of supply chain to the balance of biodiversity specially from the Small and Medium sector enterprises in Sri Lanka. Though various researchers have highlighted the penetration of GSCM practices in large-scale manufacturing industries, the present study is aimed at exploring the awareness of green supply chain management practices in Small and Medium Scale Industries (SMEs) in Sri Lanka. Therefore, the purpose of this research was to evaluate the current state of Sri Lankan Small and Medium Enterprises in the context of Green Supply Chain Management Practices (GSCMP). This research study takes a qualitative approach rather than a quantitative one. The study depends on primary data, collected through face-to-face, semi-structured interviews with seven Small and Medium enterprises in North Western Province, Sri Lanka. Interviews were conducted with managers of a set of SMEs in the Sri Lankan market in an attempt to meet the main objectives of this research. All the targets are located in North Western Province, as a matter of determining the geographical coordinates of the target. This study follows a thematic analysis approach to analyze the data. Highlighted findings were such that insignificant attention from SMEs in Sri Lanka is being paid towards the environment. SMEs were found not to be willing and seriously ready to take action so as to help in reducing environmental threats. Lack of customer awareness, Lack of knowledge & experience training to personnel in Green supply chain management, Lack of top-level management commitment in adopting green supply chain management, Suppliers or vendors are reluctant to adopt Green supply chain management practices, Cost of Implementation for Green supply chain management and Lack of support & guidance from regulatory authorities are the main reasons for lower level adoption to the green supply chain management practices among Sri Lankan SMEs. Various suggestions were offered in this study and proposed solutions according to the identified insufficiencies.
Determinants and outcomes of job engagement in the post-pandemic in Sri Lanka
Authors:   Department of Management of Technology, University of Moratuwa, Sri Lanka, Pathinayake N. , Wickramasinghe V.
Published: November 2023

The economic and social conditions of Sri Lanka in post-pandemic have created a challenging and uncertain atmosphere around the lives of employees and their engagement level at work. According to some studies, such uncertain, unclear, inconsistent, and unpredictable situations result in a negative impact on job engagement while some other studies suggest that such a situation has a positive impact on job engagement. Job engagement is an important factor in achieving organizational goals, revenue, and profits as it is directly linked with employee retention, absenteeism, and productivity. Furthermore, human resources are the most valuable asset for any organization. Therefore, it is important to examine how employees engaged in their jobs in the post-pandemic for the survival and long-term success of any organization during such a threatening situation. This study investigated the determinants of job engagement, outcomes of job engagement and mediating role of job engagement in the post-pandemic answering research questions; what are the determinants of job engagement in the post-pandemic, what are the outcomes of job engagement in the post-pandemic and whether job engagement mediate the relationship between these determinants and outcomes The independent variables of the study were job engagement determinants while job engagement outcomes were considered as the dependent variables. The mediating variable of the study was job engagement. The study referred to Kahn’s model, Saks model, Maslow’s hierarchy of needs theory, and AON Hewitt’s model in developing the conceptual model. A self-administered survey questionnaire was used for the data collection. A convenient sampling technique was used to select the survey participants. The results showed job engagement acts as a mediator for job engagement determinants and outcomes during the period. The study found that foundation and differentiator determinants significantly affect job engagement while job satisfaction, affective commitment, and psychological resilience act as the outcomes of job engagement. The results of the study further reflected the application of Maslow’s hierarchy of needs theory emphasizing basic levels of needs should fulfilled first to move to the next level in the hierarchy Thus, the study implied that organizations should fulfill employees’ basic requirements to enhance their engagement at work to gain stability and business success in an uncertain and unstable situation. The study suggests investigating determinants and outcomes of job engagement in a much larger sample and further examining the organizational identification variable in future studies.
Assessing the factors affecting the adoption of cashless payments by small-scale traders: a case study on Sri Lanka
Authors:   Department of Decision Sciences, University of Moratuwa, Sri Lanka, Karunarathna K. K.
Published: November 2023

This study investigates cashless payment adoption among small-scale traders in Sri Lanka, emphasizing those with capital investments below Rs. 4 million and workforces of 50 or fewer. Employing a positivist paradigm and a deductive approach based on the extended Technology Acceptance Model (TAM), the research challenges prevailing assumptions. Findings, derived from multiple regression analysis on an 80-trader sample in the Kurunegala district, reveal that associated costs and past exposure insignificantly impact acceptance. In contrast, trust and customer demand emerge as pivotal factors, offering nuanced insights into Sri Lanka's societal shift towards cashless systems. While the study provides practical guidance for policymakers, limitations, such as modest sample size and geographic specificity, warrant cautious interpretation. Future research should diversify samples, adopt mixed methods, and explore emerging technologies for a comprehensive understanding. The study contributes substantively to practical and theoretical realms, challenging conventional assumptions and emphasizing regional variations in small-scale traders' attitudes toward cashless methods.
A Process architecture approach for developing standard operating procedures for manufacturing organization
Authors:   Department of Management of Technology, University of Moratuwa, Sri Lanka, Delpagoda R.A. , Anjana P.D.E. , Kavindi M.K.S. , Weeraman A.S.D.
Published: November 2023

To obtain any authority or certification, such as the International Organization for Standardization (ISO), an organization must have standard documentation of the activities occurring on that premises or network. Having standard operating procedures (SOP) enables the company to perform its work to a standard. This paper focuses on developing SOPs for one of the Fast-Moving Consumer Goods (FMCG) organizations in Sri Lanka. This study is expected to help obtain the ISO 9001-2015 certification, which was a problem for the concerned Company. The main topic of this research includes process identification and standard operating procedure development for production, warehouse, and procurement processes. The value-added activities are identified through the impact matrix. The process architecture approach has been used to develop the much-needed operational SOP. Using the process architecture approach is the innovative approach in this study. Data collection for the study was done by using interviews, observations, and company records. By having a good interaction between researchers and participants, it is possible to follow the qualitative methodology. This provides a deeper understanding of the subjective aspects of the research questions. After the identification of critical processes, the qualitative attributes required by them for ISO 9001 - 2015 were recognized and the SOPs related to the existing three processes were developed in this study.
ВИБІР РАЦІОНАЛЬНОЇ ФОРМИ КОНУСНОЇ СТАЛЕВОЇ СТРУКТУРНОЇ КОНСТРУКЦІЇ ІЗ ВИКОРИСТАННЯМ БІОЕНЕРГЕТИЧНОГО МЕТОДУ
Authors: Вознюк Л.І.,
Published: November 2023

У статті розглянуто системи сталевих структурних конструкцій. Аналіз, конструкцій проведено на основі біоенергетичного методу. Застосування BEO-методу передбачає побудову енергетичного портрету конструкції. Використовуючи BEO-метод, на прикладі аналізу і порівняння п'яти конструктивних схем, при однаковій площі та при однаковій витраті сталі вибрано найбільш ефективну конструктивну схему.
САМОУЩІЛЬНЮВАЛЬНІ ДРІБНОЗЕРНИСТІ ЗОЛО-ЦЕМЕНТНІ СУМІШІ З ПОЛІФУНКЦІОНАЛЬНИМ МОДИФІКАТОРОМ
Authors: Дворкін Л.Й., , Бордюженко О.М., , Шостак С.П.,
Published: November 2023

Наведено результати досліджень властивостей самоущільнювальних дрібнозернистих золо-цементних сумішей з використанням поліфункціонального модифікатора.  Показано, що при оптимальному складі та вмісті такого модифікатора, що включає в себе полівінілацетатну дисперсію, стає можливим суттєво покращити властивості самоущільнювальних бетонних сумішей.
АНАЛІЗ ІСНУЮЧИХ АРХІТЕКТУРНО-КОНСТРУКТИВНИХ РІШЕНЬ ЗАХИСНИХ ФОРТИФІКАЦІЙНИХ СПОРУД
Authors: Філіпчук С.В. , Налепа О.І. , Голуб А.О. , Баран Д. Я.
Published: November 2023

Наведений аналіз загальних типів сучасних фортифікаційних споруд вказує на те, що споруди, які забезпечують найвищий захист, обов’язково мають основні несучі елементи, що виконані із залізобетону. Ними є підземні стіни різної форми та конфігурації, балки, ригелі, прогони, оболонки та перекриття. Натомість використання залізобетону у сучасних фортифікаційних спорудах як захисного покриття практично відсутнє, або має дуже обмежений характер. В основному це невеликі блокпости, пропускні пункти, які дають захист аналогічний легкому протиуламковому покриттю. Визначення товщини захисних покриттів виконують на дію одиночних та багатократних влучань. Бойові дії підтвердили, що будівництво опорних пунктів з використанням залізобетонних конструкцій було найбільш доцільним варіантом швидкого, ефективного та якісного будівництва фортифікаційних споруд. Фундаментальних теоретичних і експериментальних досліджень в області фортифікаційних споруд практично немає. Є певні пропозиції з покращення застарілих типів споруд та вдосконалення окремих типів вузлів.
ЗАДАЧІ ТА МЕТОДИКА ДОСЛІДЖЕНЬ НАПРУЖЕНО-ДЕФОРМОВАНОГО СТАНУ ПОХИЛИХ ПЕРЕРІЗІВ АРМОВАНИХ БАЛОК З ВИСОКОМІЦНОГО БЕТОНУ ПРИ СТАТИЧНИХ І ДИНАМІЧНИХ НАВАНТАЖЕННЯХ
Authors: Філіпчук С.В , Попрожук П.П. , Корнійчук О.І. , Чапюк О.С.
Published: November 2023

Дослідження похилих перерізів балок з високоміцного бетону є задачею актуальною. І для спроби її вирішення необхідно виконати експериментальні дослідження.  В дослідженнях ставиться за мету врахувати специфіку роботи та вдосконалення розрахунку міцності бетонних і залізобетонних елементів із високоміцного бетону, котрі руйнуються шляхом зрізу при статичних та динамічних навантаженнях.

Для досягнення поставленої мети вирішуються наступні задачі: експериментально дослідити деформований стан залізобетонних бетонних балок із високоміцного бетону на дію поперечних сил;  встановити характер руйнування та вивчити рівень граничного навантаження дослідних зразків; надати пропозиції щодо вдосконалення методики розрахунку  згинальних елементів на дію поперечної сили.
ДОСЛІДЖЕННЯ ВПЛИВУ КОНСТРУКТИВНИХ РІШЕНЬ ПАЛЬОВО-ПЛИТНОГО ФУНДАМЕНТУ МЕТАЛЕВОГО СИЛОСУ НА ОСОБЛИВОСТІ ДЕФОРМУВАННЯ ФУНДАМЕНТНОЇ ПЛИТИ
Authors: Підгурський М.І., , Підгурський І.М., , Підвисоцький О.І., , Биків Д.З.
Published: November 2023

Головною особливістю сучасних металевих циліндричних силосів є його тонкостінна оболонка, яка є чутливою до нерівномірних осідань. Розглянуто вплив конструктивних рішень пальово-плитного фундаменту, а саме товщини фундаментної плити та габаритів конвеєрної галереї, на особливості деформування фундаментної плити.
ТЕХНОЛОГІЧНІ АСПЕКТИ ЗАБЕЗПЕЧЕННЯ ПІДВИЩЕННЯ ЯКОСТІ ВІБРОПРЕСОВАНИХ БЕТОННИХ ВИРОБІВ (ДОСВІД ВИРОБНИЦТВА)
Authors: Каганов В.О.,
Published: November 2023

Стаття автора присвячена особливостям використання в процесі вібропресування наджорстких бетонних сумішей при виготовленні фігурних елементів мостіння, каменів бетонних бортових і малих архітектурних форм специфічних технологічних прийомів та спеціалізованого бетоноформувального обладнання.
ТЕПЛОІЗОЛЯЦІЙНИЙ ПЛИТНИЙ ДЕРЕВНО-ПОЛІМЕРНИЙ МАТЕРІАЛ
Authors: Цапко Ю.В., , Бондаренко О.П., , Касянчук І.О., , Цапко О.Ю., , Горбачова О.Ю., , Жеребчук Д.С., , Мазурчук С.М.,
Published: November 2023

В роботі було досліджено теплоізоляційні властивості виробу з тирси деревини, полімеризованої сумішами поліефірних та епоксидних смол. Доведено, що основним регулятором процесу є густина і пористість матеріалу, підвищення вологості й промокання знижують теплоізолювальні показники. За теплофізичними залежностями розраховано теплоізоляційні властивості матеріалів та встановлено, що температуропровідність виробу з тирси склала не більше 0,21·10-6 м2/с, а теплопровідність зразка не перевищила 0,00285 Вт/(м∙К), що відносить їх до теплоізоляційних матеріалів. Особливості визначення змочування водою показали, що для теплоізоляційного виробу з тирси, полімеризованого поліефірною смолою, вода створює тупий кут, а для теплоізоляційному виробу з тирси, полімеризованого епоксидною смолою, вода створює прямий кут, краплі при змочуванні, що показує їх стійкість до водопоглинання.
ЕКСПЕРИМЕНТАЛЬНІ ДОСЛІДЖЕННЯ ЗАЛІЗОБЕТОННОЇ ПЕРЕХРЕСНО-СТРИЖНЕВОЇ СИСТЕМИ
Authors: Азізов Т.Н. , Перейрас Роландо
Published: November 2023

У статті наведені результати експериментальних досліджень перехресно-стрижневої залізобетонної системи. Показано, що в таких системах з’являються практично тільки нормальні тріщини, хоча присутні як згинальні, так і крутні моменти. Показано, що при врахуванні зміни і згинальної, і крутильної жорсткості елементів перехресно-стрижневої системи, теоретичні результати значно ближче до експериментальних ніж при врахуванні зміни тільки згинальних жорсткостей.
Фахові компетентності магістрів спеціальності 014 Середня освіта (Математика)
Authors: Калугін Руслан Юрійович
Published: November 2023

У статті розглянуто та проаналізовано фахові компетентності майбутніх учителів математики. На основі аналізу науково-педагогічної літератури та нормативно-правових документів з’ясовано сутність і структуру фахової компетентності магістрів спеціальності 014 Середня освіта (Математика). Визнано необхідність подальшого дослідження процесу професійної підготовки магістрів в межах компетентнісного підходу.
PENGEMBANGAN MEDIA PUTARAN PERKALIAN UNTUK SISWA KELAS 3 SD
Authors: Tarigan Kelvin Paskah Pratama
Published: November 2023

Tulisan ini bertujuan untuk meningkatkan kemampuan perkalian siswa dalam pembelajaran matematika terutama dikelas 3 Sekolah Dasar, hal ini dikarenakan siswa perlu menggunakan media pembelajaran seperti media putaran perkalian yang kami buat untuk memudahkan siswa dalam menyelesaikan operasi perkalian. Ketika mengajar matematika hendaknya guru tidak hanya berpacu dengan buku melainkan menggunakan media pembelajaran sehingga dapat menarik perhatian siswa dan siswa juga bisa dengan mudah menyelesaikan masalah Operasi perkalian. Matematika mempunyai peranan yang penting dalam proses berpikir siswa, terutama dalam pembentukan kemampuan menganalisis, melakukan evaluasi hingga memecahkan masalah. Salah satu kemampuan yang harus dikuasai siswa dengan belajar matematika adalah memahami konsep. Faktanya di lapangan menunjukkan bahwa kemampuan ini kurang. Sebagian siswa masih menganggap pelajaran matematika sulit dan merupakan masalah dalam proses belajarnya. Oleh karenanya penggunaan media pembelajaran dalam pembelajaran matematika dinilai sangat penting untuk memudahkan siswa dalam memahami dan memecahkan masalah yang berkaitan dengan matematika.
ǪUALITATIVE AND ǪUANTITATIVE IDENTIFICATION OF CARBOHYDRATE AND PROTEIN CONTENT IN PACKAGED CHOCOLATE BEVERAGES
Authors: Panjaitan Riong Seulina , Djohansah Violetta , Septiyani Anisah , Ardian Kristian Derius , Asriyanti Laila Safa
Published: November 2023

(1) Latar Belakang: Biji kakao diketahui mengandung ﬂavonoid epicatechin yang bertindak sebagai antidiabetes yang membantu menurunkan kadar gula darah tubuh, namun pembuatan minuman cokelat bubuk kemasan yang telah dicampurkan dengan bahan lain seperti gula dan susu bubuk krim membuat efek farmakologinya menurun. Pada penelitian ini, dilakukan identifikasi kandungan karbohidrat dan protein pada minuman cokelat bubuk kemasan yang dijual di masyarakat. Penelitian ini bertujuan untuk mengidentifikasi dan mengukur kandungan karbohidrat dan protein yang terdapat dalam enam sampel (sampel A, B, C, D, E, dan F) minuman cokelat bubuk komersial. (2) Metode: Uji identifikasi kualitatif karbohidrat yang dilakukan meliputi uji molisch, iodin, benedict, barfoed, selliwanof dan osazon. Kemudian, untuk uji identifikasi kuantitatif karbohidrat dengan menggunakan metode Dinitrosalicylic acid (DNS). Sedangkan untuk uji identifikasi kualitatif protein meliputi uji biuret, ninhidrin, xantoprotein, sulfur dan neuman. Kemudian, untuk uji identifikasi kuantitatif protein dengan menggunakan metode Lowry. (3). Hasil:  Pada uji kualitatif karbohidrat, sampel C,D, dan F menunjukkan hasil positif pada kelima metode uji yaitu uji uji molisch, iodin, benedict, barfoed, dan selliwanof sedangkan negatif pada uji osazon. Untuk uji kualitatif protein, keenam sampel menunjukkan hasil positif untuk uji sulfur dan negatif untuk uji , xantoprotein dan neuman. Sedangkan pada pengujian kuantitatif karbohidrat, Sampel A memiliki kadar gula pereduksi terendah. dengan nilai 1,817 mg/mL sedangkan sampel Sample F memiliki kadar gula pereduksi tertinggi dengan nilai 3,788 mg/mL. Selanjutnya,  pada pengujian kuantitatif protein, Sampel A memiliki kadar protein terendah dengan nilai 0,0018 mg/mL sedangkan kadar protein tertinggi terdapat pada sampel F sebesar 0,024 mg/mL.
Design and Experiment of a Reconfigurable Bypass Downlink Surface Equipment for Transmitting the Surface Information to Deep Well
Authors: Wu Jiafeng , Hao Zaisheng , Wang Shujun , Wang Anni , Li Guangze , Du Xiaocan , Qin Dongli
Published: November 2023

Abstract: In order to achieve the transmission of the control information from the surface to the downhole in the deep well during drilling, a design method of a new downlink surface equipment for generating negative pulse signals is presented in this paper. The equipment uses adjustable throttle control valve and pressure drop module (PDM) to realize bypass flow control. The PDM uses multistage variable nozzles to reduce drilling fluid pressure and meet drilling requirements under different pressure and flow rates. Design theory of the downlink surface equipment is established, and a specific design instance is given according to actual drilling conditions. Both laboratory and field experimental results verify the correctness of the proposed design method. The research results show that the design equipment can meet the needs of the transmission of the surface information, and the downlink transmission rate can reach at least one-bit data per 8 sec. The maximum pressure drop is realized by the PDM and the pressure drop at the control valve will be reduced according to drilling demand, the fluid velocity in the equipment is reduced as much as possible, the erosion of the drilling fluid to the equipment is reduced, and the service life can be improved effectively.
EFEKTIVITAS PEMBELAJARAN MADRASAH DIGITAL BERBASIS TEKNOLOGI INFORMASI PADA MTs NEGERI 1 MAKASSAR
Authors: Hafiuluddin Hafiluddin , Hanafi Ali
Published: November 2023

Madrasah digital merupakan institusi pendidikan Islam yang menggunakanteknologi informasi dan komunikasi untuk menyampaikan materi pelajarankepada siswa secara offline maupun online. Tujuan penelitian ini adalah untukmengetahui efektivitas pembelajaran madrasah digital berbasis tekonologi danmenganalisis respons siswa terhadap penggunaan teknologi informasi.Penelitian ini adalah penelitian kualitatif dengan pengumpulan data melaluiobservasi dan wawancara. Temuan hasil penelitian bahwa efektivitaspembelajaran MTs Negeri 1 Makassar dilakukan melalui langkah-langkah:pemanfaatan teknologi pendidikan termasuk sarana dan prasarana belajar,aksesbilitas pembelajaran dan keterlibatan siswa, optimalisasi peran guru danorang tua, pengembangan kurikulum madrasah, dan penguatan metodepembelajaran yang bervariasi. Beberapa faktor yang mendukung efektivitaspembelajaran pada madrasah digital antara lain: Infrastruktur teknologiinformasi, kemampuan teknis guru pada madrasah digital, desain instruksionalpembelajaran, keterlibatan siswa dalam proses pembelajaran, peran orang tuadalam penyelenggaraan pendidikan, kualitas materi pembelajaran, interaksisosial, evaluasi pembelajaran yang efektif, kebijakan pendidikan, dandukungan teknis dari penyedia platform pada madrasah digital.