bluuebunny/crossref_metadata_2025_split huggingface dataset:
ON THE POSSIBILITY OF CONTROLLING THE BAND GAP IN GRAPHENE
Authors: Ахматов Зейтун Ануарович , Ахматов Зариф Ануарович 
Published: December 2022

Используя расчеты из первых принципов была исследована возможность управления электронной зонной структурой однослойного графена. Показано, что при адсорбции атомов калия на поверхность графена в его электронном спектре появляется энергетическая щель. Также замечено, что величина запрещенной зоны сильно зависит от количества адсорбированных атомов, а именно, при увеличении количества адсорбируемых атомов запрещенная зона в графене может как увеличиваться, так и исчезать. Так, например, когда на 32 атома углерода в решетке графена приходится один атом калия, величина запрещенной зоны составляет ΔE = 0,1 эВ. Увеличение числа атомов калия до двух приводит к исчезновению энергетической щели, тогда как для трех атомов калия она составляет ΔE = 0,22 эВ. Следует также отметить, что появление запрещенной зоны при адсорбции не приводит к нарушению симметрии графеновых подрешеток. Данное наблюдение представляется нам интересным, так как по мнению многих авторов, именно нарушение симметрии подрешеток является основной причиной появления запрещенной зоны в графене.
Using first principles calculations, the possibility of controlling the electronic band structure of the single-layer graphene was investigated. It is shown that when potassium atoms are adsorbed on the graphene surface, an energy gap appears in its electronic spectrum. It was also observed that the band gap strongly depends on the number of adsorbed atoms, namely, with an increase in the number of adsorbed atoms, the band gap in graphene can either increase or disappear. For example, when there is one potassium atom per 32 carbon atoms in the graphene lattice, the band gap is ΔE = 0,1 eV. An increase in the number of potassium atoms to two leads to disappearance of the energy gap, while for three potassium atoms ΔE = 0,22 eV. It should also be noted that the appearance of a band gap during adsorption does not break the symmetry of the graphene sublattices. This observation seems interesting to us, since according to many authors, it is the break of the sublattices symmetry that is the main reason for the appearance of a band gap in graphene.
EFFECT OF SYNTHESIS CONDITIONS ON THE FORMATION OF YLaFeO/LaYFeO COMPOSITE
Authors: Гырдасова Ольга Ивановна , Степанов Антон Евгеньевич , Наумов Сергей Владимирович , Шкерин Сергей Николаевич 
Published: December 2022

Выращиванием из гомогенного расплава методом бестигельной зонной плавки получены стеклообразные композитные материалы, имеющие высокие значения кислородной проводимости. Отмечена сложная архитектура композита: основной фазой является высокодефектный по катионной и анионной подрешеткам YLaFeO со структурой граната, внутри которого наблюдается прорастание нитевидных кристаллов LaYFeO со структурой перовскита. Исследовано влияние метода синтеза поликристаллических прекурсоров, использованных в качестве сырья для получения расплава, на формирование структуры композитов LaYFeO/YLaFeO. Композит, полученный из прекурсора сформированного формиатным методом содержит ~87 мол.% основной фазы. Композит полученный из прекурсора сформированного методом СВС ~76 мол.% фазы граната. Полученные композиты имеют выделенное направление роста основной фазы YLaFeO <100>.
Glass-like composite materials with high oxygen conductivity values were obtained by growing from a homogeneous melt by the method of non-melting zone melting. A complex architecture of the composite is observed: the main phase is highly defective in cationic and anionic sublattices YLaFeO with a garnet structure, inside which the germination of filamentous crystals LaYFeO with a perovskite structure is observed. The effect of the method of synthesis of polycrystalline precursors used as raw materials for the production of the melt on the formation of the structure of composites LaYFeO/YLaFeO is investigated. The composite obtained from the precursor formed by the formate method contains ~87 mol.% of the main phase. The composite obtained from the precursor formed by the self-propagating highdemperature synthesis is ~76 mol.% of the garnet phase. The obtained composites have a certain growth direction of the main phase YLaFeO<100>.
LANTHANUM MANGANITE NANOPOWDERS SYNTHESIS VIA COMBUSTION REACTIONS UNDER THE INFLUENCE OF ELECTROMAGNETIC FIELD
Authors: Остроушко Александр Александрович , Жуланова Татьяна Юрьевна , Кудюков Егор Владимирович , Гагарин Илья Дмитриевич , Русских Ольга Владимировна 
Published: December 2022

Методом горения нитрат-органических прекурсоров разного состава были синтезированы образцы манганита лантана, допированного стронцием. Процесс горения реализовали в условиях воздействия внешнего переменного электромагнитного поля и в его отсутствие. Обнаружено, что в ходе горения прекурсоров происходит термохимическое генерирование зарядов, зафиксированное как разность потенциалов прекурсор-земля. Показано, что состав исходного прекурсора (органический компонент и его количество), а так же присутствие внешнего переменного электромагнитного поля оказывают влияние на величину возникающей разности потенциалов, варьировавшейся от -7 до 125 B. Наличие внешнего поля приводило к сдвигу возникающей разности потенциалов в сторону положительных значений. Показана взаимосвязь между изученными электромагнитными свойствами (намагниченность насыщения, коэрцитивная сила, температура Кюри) полученных образцов и разностью потенциала прекурсор - земля, возникающей в ходе синтеза. Значения температуры Кюри варьировались в области 38-79°C для образцов, полученных под влиянием переменного электро-магнитного поля, и 49-104°C - в его отсутствие.
Lanthanum manganite doped with strontium samples were synthesized by the combustion method of nitrate-organic precursors of different composition. The combustion process was realized under the influence of an external alternating electromagnetic field and in its absence. It was found that thermochemical generation of charges occurs during precursor’s combustion, recorded as a potential difference of precursor-earth. It is shown that the composition of the initial precursor (organic component and its quantity), as well as the presence of an external alternating electromagnetic field, affect the magnitude of the potential difference that occurs, varying from -7 to 125 V. The relationship between the studied electromagnetic properties (saturation magnetization, coercive force, Curie temperature) of the obtained samples and the precursor-earth potential difference arising during synthesis is shown. The Curie temperature values varied in the range of 38-79°C for samples obtained under the influence of an alternating electro-magnetic field, and 49-104°C in its absence.
A REAÇÃO DOS TRABALHADORES PLATAFORMIZADOS: similitudes e diversidades entre as organizações de motoristas e entregadores
Authors: Oliveira Murilo Carvalho Sampaio de , Sobrinho Gabriela Sepúlveda , Soares Miguel de Santana 
Published: December 2022

Este texto realiza uma reflexão exploratória acerca da reação dos motoristas e entregadores de plataformas digitais às condições de trabalho que são submetidos. Adota como referência teórica para a concepção destas organizações, a experiência proposta por Thompson, numa abordagem interdisciplinar. Na primeira seção, descreve-se os caracteres do trabalho em plataformas digitais. Adiante, o foco é o registro das formas de organizações e ações dos trabalhadores em plataformas de transporte individual e de entregas, descrevendo cada um dos processos de organização coletiva. Na conclusão, apresenta-se uma análise comparativa entre as experiências coletivas desses trabalhadores, tomando como referência o modelo sindical tradicional.
The Effect of Working From Home Policy, Implementation of Kanban, and Online Meeting on Employee Performance At Pt. Xyz
Authors: Wulansari Dhyah , Kurniawati Yuli 
Published: December 2022

Since Covid 19 was officially confirmed as a pandemic in early March 2020, the world has taken an initiative efficiency as one of their adjustment strategies towards business continuity. The Indonesian government then launched the Large-Scale Social Restrictions (PSBB) regulation.
Due to the implementation of this regulation, most of companies are forced to find a strategy to maintain the company's sustainability immediately. PSBB has had a major impact on many companies. Several surviving companies have to apply work-from-home policy as well as several other attributes such as online meetings and the use of Kanban as their important medium to maintain productivity and performance.
This research attempts to analyze and tests the result of employee performance at PT. XYZ when working from home (WFH), using Kanban projects, online meetings and the impacts towards their performance. There are three independent variables here; work from home policy, implementation of Kanban project, and Online meeting. Meanwhile, the dependent variable is employee performance. The research instrument uses multiple linear regression methods. The result showed that there was an effect of Working-From-Home policy on performance which was 0.76, 0.05 for Kanban implementation and Online meeting was 0.06, where the simultaneous effect on employee performance was 78.39.
The Effects of Entrepreneurial Leadership, Recruitment and Innovation on Learning Organization and Organizational Performance of Four Star Hotels in East Java
Authors: Soleh Mohammad , Brahmasari Ida Aju , Brahma Ratih Ida Aju 
Published: December 2022

Purpose: The purpose of this study is to analyze the effects of entrepreneurial leadership, recruitment and innovation to learning organization and organizational performance at four-star hotels in East Java.
Design/methodology/approach: The research design used an explanatory research approach, with the research sample being the leadership or management of a four-star hotel in East Java, with a total sample of 71 respondents. The analytical technique used is SEM-PLS (SEM-Partial Least Square).
Findings: The results of the analysis conclude that there are five accepted hypotheses, namely (1) entrepreneurial leadership has a positive and significant effects on learning organizations, (2) recruitment has a positive and significant effects on learning organizations, (3) innovation has a positive and significant effects on learning organizations, (4) innovation has a positive and significant effects on organizational performance, (5) learning organization has a positive and significant effects on organizational performance.
Research limitation/implications: The rest, there are two rejected hypotheses, namely (1) entrepreneurial leadership has no significant effects on organizational performance, and (2) recruitment has no significant effects on organizational performance.
Originality/value: This Paper is original
Paper Type: Research paper
The Impact of Brand Social Values and Brand Cognitive Values to Brand Recommended Intention with Brand Characteristric as Mediating Variable
Authors: Soelaeman Mahjudin , Daeng Ahmad , Ilham Muchammad 
Published: December 2022

Purpose: This study examines the kind of community value companies should provide when strengthening the relationship between customers and brands through the establishment of an online brand community, and how this kind of community value promotes customers’ sense of community engagement and willingness to spread brand reputation. The paper also discusses how an enterprise’s brand symbolism affects the relationship between community value and customers’ engagement in online brand community. This study explored the important role of brand symbolism in the establishment of an online brand community.
Design/methodology/approach: This study uses data collection from questionnaire surveys to design a quantitative research method. An online questionnaire survey of mobile phone users in East Java was conducted to collect data on social value, cognitive value, brand symbolism, customer community engagement, and brand recommendation. The brands of mobile phone include Apple, Huawei, Samsung, OPPO, VIVO, and MI Randomly selected 240 subjects from their sample database and then sent the questionnaire link to research participants’ mobile phones. For the model analysis and hypotheses test-ing, the researcher used statistical software IBM SPSS Statistics and AMOS 21.
Findings: First, online brand community value (both cognitive and social value) has a pos-itive impact on customer community engagement. Second, customer communi-ty engagement has a positive impact on customers’ brand recommend intention. Third, the customer community engagement is a mediator between the online brand community value and the customer brand recommend intention. Most importantly, fourth, the symbolic value of the brand controls the relationship between community value and customer community engagement. For brands with high symbolic value, the community value should emphasize cognitive val-ue rather than social value. For brands with a low symbolic value, the communi-ty provides cognitive or social value, which is not affected by the symbolism of the brand.
Research limitations/implications: Among the 240 research participants, the researcher ex-cluded participants who lacked online brand community experience or had in-valid data to qualify for data collection. After the researcher excluded participants who did not qualify for data collection, only 203 qualified questionnaire surveys advanced to the data collection and analysis phase, which was the ques-tionnaire recovery rate of 84.58%.
Originality/value: This paper is original
Paper type: Research paper
THE EFFECT OF COVID 19 ON COMPANY PERFORMANCE IN MANUFACTURING COMPANIES IN INDONESIA
Authors: Cahyaningati Retno , Lukiana Ninik , Wiyono M.Wimbo , Kasno Kasno , Sholihin Muhammad Rizalus , Juliasari Deni 
Published: December 2022

Purpose: This study was conducted to determine and explore the effect of the COVID-19 pandemic on company performance using control variables for sales growth, leverage, and company size in companies listed on the Indonesia Stock Exchange
Design/methodology/approach: The study used a population of manufacturing companies listed on the Indonesia Stock Exchange for the quarter/quarter period during 2020. The sample was taken using purposive sampling 148 observation companies matched the research criteria. This study uses secondary data, namely the quarterly/quarterly financial statements of each sample company
Findings: The results showed that in testing the partial correlation of the independent variables, namely covid 19 with the control variables of sales growth, leverage and company size has a significant effect on company performance, but the effect was still weak. Partially covid 19 has a significant positive effect on company performance. Partially, sales growth has no significant effect on the company's performance. Partially, leverage has no significant effect on company performance. Partially, company size has a significant positive effect on company performance. Simultaneously, the independent variables of covid 19, sales growth, leverage, and company size significantly affect the performance of manufacturing companies listed on the Indonesia Stock Exchange in 2020.
Research limitations/implications: Implikasi teoritis dalam penelitian ini berfokus pada tingkat kinerja perusahaan, Penelitian kami membahas secara konprehensif pengaruh pandemi Covid 19 terhadap kinerja perusahaan.
Practical implications: Untuk pelaku bisnis di ASIA diharapkan dapat menemukan solusi terkait adanya ketidakpastian global ini
Originality/value: Covid 19 ke kinerja perusahaan dengan pertumbuhan penjualan, leverage, size sebagai variabel kontrol.
Paper type: Research paper
Keyword: Covid 19, sales growth, leverage, company size, and firm performance.
Provision Impact Analysis of Motorcycle Exclusive Lanes on the Performance of Road Sections Using the Method MKJI 1997 and Vissim Software
Authors: Mufhidin Amar , Karimah Salma , Isradi Muhammad , Rifai Andri Irfan 
Published: December 2022

Purpose: This study aims to determine the performance of the road before and after the provision of motorcycle lanes. It also aims to determine the lane effect on vehicle speed and alternative solutions.
Design/methodology/approach: In this study, MKJI 1997 and Vissim Software were used as the research methods.
Findings: The results of the existing road performance showing that the vehicle speed, DS, and level of service were 38.66 km/h, 0.84, and D, respectively. This indicated that the provision of motorcycle lanes was effective in improving road performance, due to the level of service for the LV and HV lanes increasing from D to B, with a speed increasing from 36.99 km/h to 40.25 km/h. The results showed that the level of service for the motorcycle lane increased from D to C and the vehicle speed was 49.92 km/h. While the level of service for LV and HV lanes being consistent with B and the vehicle speed was 40,04 km/h.
Research limitations/implications: The level of service for the motorcycle lanes decreased from D to F with the speed decreased from 46.13 km/h to 41.23 km/h, subsequently indicating that the alternative solution was to widen the motorcycle lane.
Practical implications: Margonda Road is one of the congestion points in Depok City. Margonda Road connecting Depok and Jakarta. The composition of motorcycles on Margonda Road reach more than 80% of the traffic flow. This conditions has an impact on decrease the road performance. In this study, the provision of motorcycle lanes will be carried out using the Vissim Software simulation, where the application of lanes is considered to be the solution to this problem.
Originality/value: This paper is original
Paper type: a Research Paper
E-Finance : Mitigation of Fraud Tendency in Indonesia
Authors: Rusdianti Imanita Septian , Irmadariyani Ririn , Kustono Alwan Sri 
Published: December 2022

Purpose: This research aims to determine the application of e-finance in the Lumajang Regency DPUTR and its role in improving internal control and mitigating fraud risk with fraud diamond theory analysis.
Design/methodology/approach: This research is qualitative case study research with descriptive methods. Data collection techniques use observation, documentation and semi-structured in-depth interviews.
Findings: Data analysis techniques through the stages of plan, design, prepare, collect, analyze, share. The results of this study include: 1) The application of e-finance in the Lumajang Regency DPUTR based on realtime online which is integrated with all LUMAJANG REGENCY OPDs to facilitate financial reporting in accordance with public sector accounting rules to prevent fraud so as to create transparency and can be accounted for; 2) Based on diamond theory fraud analysis, the application of e-finance is able to mitigate risks. fraud; 3) E-finance plays an important role in improving the internal control of the Lumajang Regency DPUTR.
Research limitations/implications: The limitation of this research is the lack of theoretical foundations and previous research on the application of e-finance in public sector organizations. This finding provides solutions to public sector organizations in minimizing fraud through the application of e-finance applications by using fraud diamond theory analysis.
Practical implications: This study adds literature on the application of e-finance to public sector organizations and its role in mitigating the risk of fraud which has not been discussed in previous studies.
Originality/value: This paper is original.
Paper type: Research paper
Effects of Using Pumice Sand as A Partial Replacement of Fine Aggregate in Lightweight Concrete Mixtures
Authors: Gaus Abdul , Sultan Mufti Amir , Hakim Raudha , Rauf Ichsan 
Published: December 2022

Purpose: The advantage of lightweight concrete is to reduce the weight, which is considered the dead load on the structure. This study aims to determine the effect of replacing sand with pumice sand as fine aggregate in lightweight concrete. The substitution affects the compressive strength, split tensile strength, and weight.
Design/methodology/approach: The research method is through testing in the laboratory, where the test specimens are cylindrical following SNI with a height of 30 cm and a diameter of 15 cm totaling 50 pieces. The composition ratio between regular and pumice sand is 75%:25%, 50%:50%, 25%:75%, and 0%:100%, respectively. Control of the test object using 100% regular sand.
Findings: This research shows that adding pumice sand into the mixture decreases the volume weight. The weight of the volume of concrete produced is < 1,900 kg/m3, which is classified as a lightweight one.
Research limitations/implications: The resulting compressive strength of 56.63 kg/cm2 decreased against the control test object by 81.10%. At the same time, the split tensile strength is 1.13 kg/cm2, or a decline of 52.05% from the control test object.
Originality/value: This paper is an original work.
Paper type: Research paper
A Traffic Management System for Minimization of Intersection Traffic Congestion: Case Bengkong Junction, Batam
Authors: Andika Ilham , Rifai Andri Irfan , Isradi Muhammad , Prasetijo Joewono 
Published: December 2022

Purpose: An increase in the number of vehicles that are not matched by the growth of road area is one of the causes of road Traffic congestion in Batam City. Traffic congestion occurs, especially in business and densely populated residential areas. The government has carried out various engineering and traffic management to keep the road service level under control. This study aims to analyze traffic management's efficiency in reducing Traffic congestion on roads in Batam City.
Design/methodology/approach: This study uses a case study at the Bengkong red light intersection, Batam City. The analysis was carried out using The Indonesian Highway Capacity Manual-1997.
Findings: Traffic management and engineering must be implemented gradually to get a suitable implementation model. Actual conditions in the field become essential in determining the right choice of traffic management and engineering.
Research limitations/implications: Traffic management and engineering analyzes were conducted locally at the case study site.
Practical implications: The analysis of traffic management reduces traffic congestion's impact.
Originality/value: Original paper
Paper type: A case study
Archipelago Commons: Using the Archipelago and AMI Software to Provide Access to Rensselaer Polytechnic Institute's Engineering Drawings, a Pilot Project
Authors: McCarthy Brenden 
Published: December 2022

In this paper we examine practical applications of the Archipelago Commons software for science and technology libraries through the lens of a pilot project conducted within the Libraries at Rensselaer Polytechnic Institute in 2021. This pilot project uses Archipelago for data curation, demonstrates Archipelago’s value for sci-tech library applications, and highlights the technology experimentation that occurs during system migrations. The pilot involved deployment of a local installation of Archipelago and use of the Archipelago Multi-Importer (AMI) to create a digital collection of engineering drawings.
The pilot results demonstrate the value of Archipelago as a quick and lightweight “app” for any small sci-tech library that wants to showcase their digital collections or needs to quickly replace a legacy system. After this pilot we used the same approach detailed in this paper to migrate all 4,168 images from our old database to Archipelago. We conclude that Archipelago has value to sci-tech libraries and can be scaled to GLAM institutions of any size, with data as simple or robust as necessary for an institution’s local needs.