bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of the current situation and teaching strategies of university table tennis teaching in the context of big data
Authors: Wang Jingli , Li Yong
Published: September 2023

As an important part of university physical education, table tennis teaching occupies a crucial position in physical education reform and requires continuous innovation and reform. This paper first starts from the current situation of table tennis teaching and proposes the application of a binocular stereo vision system based on a binocular stereo vision system for university table tennis teaching, which lays the foundation for three-dimensional reconstruction and skill learning. Secondly, the mathematical model of the 3D reconstruction algorithm is constructed by the tangential distortion of least squares, which avoids the complex algorithm of iteratively solving the 3D world coordinates of table tennis and improves the speed of the 3D reconstruction algorithm while the accuracy meets the subsequent prediction requirements. Finally, students in the experimental and control groups were compared in the technical evaluation of table tennis backhand pushing, attacking techniques, and left pushing and right attacking to verify the effectiveness of the table tennis binocular stereo vision teaching system. The study results showed that the experimental group students trained by the binocular stereo vision system for table tennis had 41.77% higher accuracy, 23.13% higher coordination, 12.31% higher return speed, and 14.84% higher hitting power compared to the control group. Applying a binocular stereo-vision system to table tennis teaching is novel and is conducive to stimulating students’ curiosity and challenge, enhancing their interest in learning, and effectively improving their understanding and knowledge of table tennis techniques.
Current situation and training strategies of preschool students’ skills in the Internet era
Authors: Liu Manrong , Zhang Miao
Published: September 2023

The analysis of the current situation of skills and training strategies of preschool students in colleges and universities is to provide more professional talents for the cause of early childhood education. This paper first gives a brief description of the association rule mining algorithm under Internet technology, gives the evaluation method of association rules, including support, confidence, and enhancement, and gives the basic process of association rule mining. Next, it is explained that the multi-objective optimization problem utilizes the objective function optimization for calculating the optimal solution, and the commonly used multi-objective optimization problem solution and the selection method of the fitness function are given. Then the principle of the whale optimization algorithm is described and explained, the whale optimization algorithm is used to optimize the objective function of association rules, and then the steps and processes of the WOA-ARM algorithm are obtained. Finally, the algorithm was used to mine the training strategy of GZ University as an example, the “situational experience” teaching and training method was proposed, and the teaching characteristics and objectives of this method were analyzed. Regarding teaching objectives, 48.75%, 32.27%, 12.39%, and 6.59% of the ratings were A, B, C, and D, respectively. This indicates that the “situational experience” teaching training is suitable for college preschool students, and there is a strong correlation between the current skills and the training strategy.
Research on visual recognition and positioning of industrial robots based on big data technology
Authors: Zhang Jin
Published: September 2023

This paper proposes a fast recognition and positioning algorithm based on deep learning for the problems of slow recognition of complex workpieces, low accuracy, and inaccurate positioning of industrial robots. The image grayscale and parameter calibration are performed by building an industrial high-precision vision system on the target image information. The target image is then localized and segmented by boundary pixel detection, and the trained improved SSD algorithm is used to identify the target, obtain the coordinates of the target location and the category to which it belongs, and realize the industrial robot sorting. The results show that the target recognition algorithm based on the improved SSD algorithm has an error of less than 0.5 mm, the fastest recognition speed of 0.045 sec/each, and the recognition accuracy can be maintained above 98% in the experimental environment, and the distance error between the real point and the calculated point is 8.09 mm on average, indicating that the algorithm has good accuracy and stability. Building a prototype system based on the improved SSD algorithm for industrial robots with complex processes is expected to provide an automated robot identification and positioning solution for production lines.
Research on the construction and effect evaluation of OMO mode of professional practical training teaching of landscape engineering technology based on virtual simulation technology
Authors: Yu Min , Xia Wenxin , Zhang Linlin , Lv Junnan , Xin Zhengqi
Published: September 2023

Under the Internet+ information era background, the barriers between traditional and modern education are melting away. This paper takes the OMO teaching mode as the entry point and constructs the design of professional practical training teaching of landscape engineering technology based on virtual simulation technology analysis of the OMO teaching mode. While drawing on the OMO teaching mode, it combines the system posture detection and binocular vision position-solving technology in virtual simulation to build a cyclic development system of OMO mode and professional practical teaching of landscape engineering technology and promote the deep integration of the two. The experimental results show that through 18 weeks of comparison between the OMO teaching mode based on virtual simulation technology and the traditional teaching mode of practical teaching, it is found that the average scores of students are 84.31 and 77.41, respectively, with an effective increase of 10% in performance. Regarding student participation, the OMO teaching mode based on virtual simulation technology mainly focuses on the 68-82 range, effectively stimulating students’ enthusiasm. The OMO teaching mode based on virtual simulation technology proposed in this paper can effectively improve the current problems of traditional teachings, such as resources without rules and regulations, poor correlation, and one-sided evaluation methods, to more effectively cultivate students’ independent learning ability and improve their vocational skills.
Theoretical and practical research on mathematical modeling of economy and finance based on artificial intelligence
Authors: Sun Jie
Published: September 2023

In the context of the rapid development of big data technology, developing an artificial intelligence economy is beneficial to China’s economic transformation, industrial upgrading, and enhancing international competitiveness. This paper first constructs a financial mathematical model of the AI economy based on the theoretical foundation of financial mathematics. The structure of the financial mathematical model mainly consists of three parts: portfolio model, capital asset pricing model, and financial derivatives pricing model. To address the problem of the unstable development of China’s AI economy, the theoretical framework of investment risk management is constructed, which can help investors intelligently implement investment risk management plans and implement investment risk management countermeasures and measures. Finally, to verify the performance of the risk investment optimization model and intelligent algorithm proposed in this chapter, three investment scales will verify the investment risk management capability based on the portfolio model. The results show that the convergence performance of the portfolio model is 0.2025, 0.4021, and 0.4391 for three investment sizes of 2, 4, and 9, and the penalty coefficients are 1.5, 28, and 0.2, respectively. At the beginning of the iteration, the investment risk is high, and the convergence speed of the portfolio model is higher than the capital asset pricing model and the financial derivatives pricing model. This study applies it to solve financial optimization problems, including portfolio, stock forecasting, risk management, and many other fields, and provides a better solution to the optimization decision problem of the portfolio.
Challenges and risks of Serbian spruce (Picea omorika [pančić] purk.) in the time of climate change – a literature review
Authors: Vacek Zdeněk , Vacek Stanislav
Published: September 2023

Serbian spruce (Picea omorika [Pančić] Purk.) is a Balkan endemic coniferous species, the expansion of which is restricted by limited knowledge. This literature review paper compiles findings from 176 scientific papers and presents a summary of research results that pertain to the Serbian spruce potential in general, with a specific focus on European forests from 1951 to 2022. It summarizes the importance of its taxonomy, biological and ecological characteristics, site demands, production and silviculture, risks and pests, as well as the potential of this tree species in relation to global climate change. Serbian spruce is very resistant to the negative effect of air pollution and extreme heat waves compared to other spruce species, especially the most economically important spruce species in Europe– Norway spruce (Picea abies [L.] Karst.). Moreover, its radial growth shows highly balanced annual increments, and the density and technical parameters of the wood are comparable with Norway spruce. On the other hand, the highest weakness may be the limited genetic variability. Despite its rather limited natural range, Serbian spruce can be considered one of the most adaptable spruces to anthropogenic factors and climate change, and a valuable tree species for urban landscapes. Its production potential of wood on acidic, dry and extreme sites makes it attractive for forestry, through its introduction.
Non-native tree species growth characteristics inventoried three decades after planting in the Danube Lowland
Authors: Longauer Roman , Belko Martin , Pástor Michal , Strmeň Slavomír , Mačejovský Vladimír
Published: September 2023

This paper presents non-native (NN) coniferous and deciduous tree species growth and vitality assessment on experimental research plots established in 1980, 1982 and 1985 in the Danube Lowland over an extended time period. For NN coniferous tree species, Douglas fir, grand fir and eastern white pine reached significantly higher values of diameter at breast height (dbh) and height (H) than Austrian pine. For NN deciduous tree species markedly higher values of H and dbh for black walnut compared to sweet chestnut and red oak were recorded. Damage observed in larger extent on examined NN tree species stands included illegal removal of top of stem for grand fir and presence of necrosis on trunks of sweet chestnut. Comparison of NN coniferous and deciduous tree species growth with native reference tree species showed that NN Douglas fir, grand fir, eastern white pine, red oak and black walnut were capable to achieve similar or even higher values of assessed parameters than native reference tree species. The results suggest, that cultivation of NN coniferous, including Douglas fir, eastern white pine, as well as NN deciduous tree species, including red oak and black walnut in Danube Lowland could contribute to diversification and stabilisation of wood production potential of local forest formations.
Predicting Days to Respondent Contact in Cross-Sectional Surveys Using a Bayesian Approach
Authors: Coffey Stephanie , Elliott Michael R.
Published: September 2023

Surveys estimate and monitor a variety of data collection parameters, including response propensity, number of contacts, and data collection costs. These parameters can be used as inputs to a responsive/adaptive design or to monitor the progression of a data collection period against predefined expectations. Recently, Bayesian methods have emerged as a method for combining historical information or external data with data from the in-progress data collection period to improve prediction. We develop a Bayesian method for predicting a measure of case-level progress or productivity, the estimated time lag, in days, between first contact attempt and first respondent contact. We compare the quality of predictions from the Bayesian method to predictions generated from more commonly-used predictive methods that leverage data from only historical data collection periods or the in-progress round of data collection. Using prediction error and misclassification as short- or long- day lags, we demonstrate that the Bayesian method results in improved predictions close to the day of the first contact attempt, when these predictions may be most informative for interventions or interviewer feedback. This application adds to evidence that combining historical and current information about data collection, in a Bayesian framework, can improve predictions of data collection parameters.
Towards Demand-Driven On-The-Fly Statistics
Authors: Gelsema Tjalling , Heuvel Guido van den
Published: September 2023

A prototype of a question answering (QA) system, called Farseer, for the real-time calculation and dissemination of aggregate statistics is introduced. Using techniques from natural language processing (NLP), machine learning (ML), artificial intelligence (AI) and formal semantics, this framework is capable of correctly interpreting a written request for (aggregate) statistics and subsequently generating appropriate results. It is shown that the framework operates in a way that is independent of a specific statistical domain under consideration, by capturing domain specific information in a knowledge graph that is input to the framework. However, it is also shown that the prototype still has its limitations, lacking statistical disclosure control. Also, searching the knowledge graph is still time-consuming.
Estimation of the Utility Function of Money and Housing Based on the Cumulative Prospect Theory
Authors: Brzezicka Justyna , Tomal Mateusz
Published: September 2023

This article addresses the issue of the utility of money and the utility of housing with a value equivalent to that amount of money. The literature provides many reports on the shape of the utility function for money, but much less research has been devoted to the utility function for housing. The aim of this study was to estimate the utility function of money and housing according to the cumulative prospect theory (CPT) developed by Tversky and Kahneman (1992). Parameters alpha (α), beta (β), and lambda (λ) were estimated to compare the utility value of money and housing. The most important conclusions of the study are as follows: parameters alpha and beta were greater than 0 and less than 1 for both housing and money. Function v(x) was concave in the gain domain and convex in the loss domain, which is consistent with the CPT. The differences in the lambda parameter denoting loss aversion were not significant, and the value of the utility function was somewhat higher for money than for housing. This study was undertaken to estimate the CPT parameters for housing, which, according to the authors’ best knowledge, has not been investigated to date.
Predisposing, Enabling and Reinforcing Factors Associated with Sexual Intercourse Intention among Indonesian Young Men
Authors: Maruf Mohammad Ainul , Richter Kerry , Soonthorndada Amara
Published: September 2023

Premarital sex among young men is more acceptable than young women. The Indonesian Demographic and Health Survey data consistently shows that the percentage of sexual experiences in young men is higher than that of young women and is increasing every year (6% versus 1% in 2007 and 8% versus less than 1% in 2012). This study aims to investigate which factors influence sexual intercourse intention among young men in Indonesia. This study obtained data from the 2012 Indonesian Demographic and Health Survey, especially the Adolescent Reproductive Health component with a total number of respondents of 9,109 young unmarried men. Data were analyzed descriptively and inferentially using the chi-square test and the Mann Whitney test. There are 21.1% of young men who intend to have premarital sex. Predisposing factors such as knowledge and attitudes on reproductive health, enabling factors such as dating behavior, as well as reinforcing factors such as sources of reproductive health information (peers, siblings/relatives, health service providers, religious leaders and the media) were found to be associated with the intention to have sexual intercourse. These findings indicated the need to strengthen the role of peer educators and health service providers as well as the involvement of religious leaders, and the media in adolescent reproductive health programs.
Kejadian Diabetes Mellitus Tipe II pada Lanjut Usia di Indonesia (Analisis Riskesdas 2018)
Authors: Milita Fibra , Handayani Sarah , Setiaji Bambang
Published: September 2023

Diabetes Mellitus adalah salah satu gangguan metabolik dengan karakteristik hiperglikemi karena kelainan kelainan insulin yang disebabkan gangguan kerja dan atau sekresi insulin.  DM tipe 2 merupakan 90% dari seluruh kategori diabetes mellitus. Lansia secara alami juga akan menghadapi masalah yaitu perburukan kondisi kesehatan. Salah satu penyakit yang menyertai lansia adalah Diabetes Mellitus. Tujuan dari penelitian ini adalah mempelajari faktor-faktor risiko yang berhubungan dengan kejadian DM tipe 2 pada lansia di Indonesia. Penelitian ini bersifat analitik dengan desain potong lintang. Penelitian ini menganalisis data sekunder yaitu data Riskesdas 2018. Hasil bivariat penelitian ini menggambarkan, terdapat hubungan DM tipe 2 pada lansia dengan pendidikan (OR=0,403, nilai p=0,000), pekerjaan (OR=3,010, nilai p=0,000), aktivitas fisik (OR = 1,466, nilai p=0,000), kebiasaan merokok (OR = 0,764, nilai p=0,000), konsumsi buah sayur (OR=0,797, nilai p=0,000), obesitas (OR=1,896, nilai p=0,000) dan riwayat hipertensi (OR=1,960, nilai p=0,000) serta makanan/minuman yang berisiko kecuali makanan bakar (nilai p=0,577) dan makanan pengawet (nilai p=0,577). Dapat disimpulkan hampir semua variabel konsumsi makanan/minuman berisiko berhubungan secara signifikan dengan DM tipe 2, kecuali konsumsi makanan bakar serta makanan pengawet. Saran dari peneliti, dibutuhkan upaya preventif dan promotif berupa deteksi dini faktor-faktor risiko DM serta edukasi kepada seluruh lapisan masyarakat.
Pemetaan Potensi Dalam Rangka Optimalisasi Sumberdaya Lokal di Desa Kuripan Kecamatan Ciseeng Kabupaten Bogor
Authors: Andriyani Lusi , Purnamasari Oktaviana , Meisanti Meisanti
Published: September 2023

Tujuan dalam pengabdian ini adalah melakukan pemetaan terhadap potensi desa di Desa Kuripan Kecamatan Ciseeng Kabupaten Bogor Jawa Barat.  Metode analisis yang digunakan untuk mencapai tujuan tersebut adalah dengan menggunakan analisis statistik deskriptif dan deskriptif kualitatif. Hasil analisis menunjukkan bahwa selcara umum Desa Kuripan memiliki potensi di sektor pertanian, peternakan, perkebunan, perikanan, industri dan perdagangan. Untuk mengoptimalkan potensi desa yang dimiliki, diperlukan peran semua kalangan pemerintah dan masyarakat dan meningkatkan optimalisasi pengelolaan BUMDes.
Análise da variação da linha de costa com uso da ferramenta cassie: um estudo de caso no arco praial barra da lagoa – Moçambique em Florianópolis, Santa Catarina, Brasil
Authors: Osako Liliana Sayuri , Oliveira Junior Jeuid
Published: September 2023

A quantificação da variação da linha de costa é de fundamental importância para o estudo dos processos dinâmicos que moldam a interface Terra-Mar. Recentemente, a ferramenta Coastal Analysis via Satellite Imagery Engine (CASSIE) foi desenvolvida na plataforma Google Earth Engine (GEE) para a quantificação automática da variação da linha de costa com base em imagens multiespectrais dos programas espaciais Landsat e Copernicus. O presente trabalho tem como objetivo apresentar os procedimentos metodológicos envolvidos no uso da ferramenta CASSIE com o intuito de fornecer apoio técnico à Secretaria de Coordenação e Governança do Patrimônio da União do Ministério da Economia (SPU/ME) do Brasil na gestão de áreas denominadas de terrenos de marinha e seus acrescidos. No estudo de caso, o Arco Praial Barra da Lagoa – Moçambique (APBM) mostra no período de 2016 a 2022 o predomínio de zonas de acreção com valor médio de 2,565 m/ano para a taxa de regressão linear (LRR), e com menor frequência zonas de estabilidade com 0,16 m/ano. A taxa de variação da linha de costa em escala de eventos (dias e anos) para o APBM foi obtida de forma sistemática, rápida e consistente com o uso da ferramenta CASSIE.
Church Life amid Two Pandemics: Similarities and Differences between Covid-19 and the 1918 Influenza Pandemic on Congregational Life in the Dutch Reformed Church, South Africa
Authors: Van Rooi Leslie
Published: September 2023

The Covid-19 pandemic continues to affect congregational life in South Africa, and churches across the globe are still contemplating the impact of the (ongoing) pandemic, owing to experiences of pain, loss, and absence of direct interaction on the one side, and new possibilities linked to technology and innovative practices amid a global pandemic, on the other. Much has been written about similarities between this pandemic and other global pandemics, specifically on similarities and differences between the Covid-19 pandemic and the 1918 influenza pandemic. This comparison has also emerged in ecclesial studies and reflections. This article will reflect on similarities and differences between congregational life during the Covid-19 and the 1918 influenza pandemics in the context of South Africa. Specific mention will be made of necessitated congregational adjustments linked to practices and rituals during these pandemics in the context of the Dutch Reformed Church in South Africa. In relation to both pandemics and periods, the official mouthpiece of the Dutch Reformed Church, Kerkbode, will be used as a primary source through which the similarities and differences between the mentioned pandemics will be discussed. Other church archival material and relevant church historical studies will be used to reflect on the 1918 period. Recent publications linked to this topic, as well as general congregational experience and reflections, will be used to explore the 2020 period. As such, this article makes use of various research methods, including archival research and textual and comparative analysis.
Unraveling Atrial Myopathy
Authors: Satpathy Chhabi , Mishra Trinath Kumar , Singh Subhasish
Published: September 2023

Atrial fibrillation (AF) is the most common arrhythmia encountered, especially in the elderly. AF leads to fivefold risk of stroke. However, there is a no temporal association found when we compare the onset of AF and stroke suggesting that the presence of AF is not mandatory for stroke occurrence. This has led to concept of atrial myopathy suggesting that a diseased atrium can provoke stroke without AF. Atrial interstitial fibrosis, inflammation, and extracellular matrix deposition can initiate and perpetuate atrial myopathy leading to stasis of blood flowing through the atria and may lead to stroke without intervening AF. AF may be just a marker of atrial myopathy. The present paper reviews the emerging concept of atrial myopathy, its pathogenesis, precursors, and diagnosis.
Biomarkers of chronic spontaneous urticaria
Authors: Datta Shreya , De Abhishek , Singh Sushil , Sarda Aarti , Dhar Sandipan
Published: September 2023

Chronic spontaneous urticaria (CSU) is a distressing skin condition that is characterized by the daily or nearly daily appearance of pruritus and wheals of more than 6-week duration. CSU is now believed to have two endotypes, namely, the more common auto-allergic type and the more recalcitrant autoimmune type. It is often difficult to treat the disorder and various treatment modalities are recommended for symptom control, including second-generation non-sedative antihistamines, cyclosporin, and omalizumab. To track the progression of the disease and the efficacy of treatment, certain biomarkers play a key role. Biomarkers identified for CSU include some major ones such as Interleukin (IL)-6, IL-17, and IL-31 and minor ones such as periostin and oncostatin-M. Not only do they may serve as important prognostic tools for proper diagnosis of the disease, but they have also been utilized in several clinical studies to track the progression of the disease, which underlines their importance in the clinical setting.
Dual light control of a catalytically-driven chemical reaction cycle
Authors: Valera Jorge S. , López-Acosta Álvaro , Hermans Thomas
Published: September 2023

Chemically-fueled chemical reaction networks (CRNs) are key in controlling dissipative self-assembly. Having catalysts gating fuel consumption for both the activation and deactivation chemistry of (assembly-prone) monomers and controlling the catalytic activity with an external stimulus would provide better control over where, when, and how long self-assembled structures can form. Here we achieve light control over two different catalysts that govern both monomer activation and assembly into supramolecular fibers, as well as deactivation and fiber disassembly. Activation proceeds via photoredox catalysis under visible light, whereas deactivation is achieved by organometallic catalysis that relies on a photocaged pre-fuel activated by ultraviolet light. Overall, we show how supramolecular fibers can be formed and destroyed using light.
INTERRELATION OF PROFESSIONAL BURNOUT AND BIOPSYCHOLOGICAL AGE OF INVESTIGATORS OF INTERNAL AFFAIRS BODIES
Authors:   Moscow State University of Psychology and Education, Berezina Tatiana N. , Lyusova Tatiana A. ,   Moscow State University of Psychology and Education
Published: September 2023

The official activity of an investigator is a complex and multifaceted phenomenon that requires a high degree of professionalism and concentration during work. In this study, the interrelation between biopsychological age and professional burnout of employees of investigative departments of internal affairs bodies aged 23 to 57 years was studied. The investigators who took part in the experimental work felt like older people. The study showed that employees under the age of 30 had fewer signs of a decrease in emotional tone, detachment and emotional indifference in communicating with others. With an increase in the level of their passion and enthusiasm for professional activity, the expected retirement age will increase. Employees over the age of 30 have a greater risk of a tendency to decrease professional motivation, with an increase in the level of mental exhaustion, they will have an increased negative assessment of their health, and with an increase in biological age, professional motivation will decrease. The data obtained should be taken into account in the process of psychological preparation of specialists for professional activity and prevention of professional burnout.
ACTUAL PROBLEMS OF REGULATION OF PROFESSIONAL MOBILITY OF PERSONNEL
Authors:   Belgorod State Technological University named after V.G. Shukhov, Astakhov Yury V. , Veselova Margarita S. ,   Belgorod State Technological University named after V.G. Shukhov
Published: September 2023

The article discusses the current problems of professional mobility of personnel in the context of the introduction of sanctions against Russia by the United States and the European Union and the new subjects formed in accordance with the Constitution of the Russian Federation and their admission to the Russian Federation. It is noted that in 2014-2023, migration processes occur in the subjects of the Russian Federation, which are characterized by high dynamics and affect the number, types and directions of migration, the socio-demographic profile of the moving population, including professional personnel to new subjects of the Russian Federation. As a result, new representative, legislative and executive-administrative authorities are being created in these subjects. This directly affects the creation of organizational structures, the selection, placement and retraining of personnel and their relocation, as a rule, to new positions from the federal center and from other subjects of the Russian Federation in the order of rotation and promotion of specialists to new regions. That is, in fact, there is a professional mobility of specialists.
INNOVATIONS IN THE FIELD OF MANAGEMENT IN THE STATE SERVICE AS A FACTOR IN PROMOTING NATIONAL INTERESTS
Authors:   Russian Presidential Academy of National Economy and Public Administration (RANEPA), Ovcharenko Denis D.
Published: September 2023

The article considers innovations in the field of management in the state service as a factor in promoting national interests. The author describes the advantages of implementing Agile methodology, analyzes the practice of using game elements, rules, tools in any non-gaming field — gamification in public administration, gives a classification of talent management, and provides recommendations for the development of leadership qualities in public service. According to the results of the study, it is concluded that in modern conditions of turbulence, there is a need for the use of innovative methods of public administration. When choosing methods of public administration, it is necessary to focus on a hybrid approach in the field of management in the state service as a factor in promoting national interests. That is, it is necessary to apply not only innovative methods, but also to preserve the best practices of using traditional methodology. Such innovative methods can help government agencies in solving problems such as leadership technologies, gamification, agile methodology and others.
ARCHITECTURAL TEXT AS A MEANS TO REALIZE AESTHETIC FOCUS IN TEACHING COMMUNICATIVE TEXT ACTIVITY IN TARGET LANGUAGE (THE CASE OF ENGLISH)
Authors:   Moscow Institute of Architecture (State Academy), Romanova Svetlana V.
Published: September 2023

The article considers text activity as a part of an architect’s professional communication for performing their job responsibilities which are determined by the aesthetic gist of architectural practice. As the major approaches to foreign language teaching have been reviewed, it is concluded that foreign-language communication competency is developed preferably in the course of studies which integrate the tasks of language training and subject educational textual activity in the target language. An architectural text is considered through its informative content including content-factual, content-conceptual and aesthetic types of information; and two types of text activity are defined depending on the text informativity and its communicative intention. By the example of several architectural text tasks, it is demonstrated that the focus on interpretation of factual information and comprehension of conceptual information generates communicative activity which can be aimed at individual comprehension of the architectural and aesthetic conception. Motivated subjective perception of the text subject enables to perceive aesthetic information and thus encourages development of aesthetic component of a student’s foreign-language communicative competence. The text activity addressed this way assures realization of aesthetic aspects of professional communication.
Pembuatan Tempe Berbahan Dasar Ampas Tahu Dengan Proses Fermentasi Dengan Menggunakan Ragi (Ryzopus Oruzae)
Authors: Supratiwi Eki , Zulnazri Zulnazri , Hakim Lukman , Kurniawan Eddy , Muhammad Muhammad
Published: September 2023

Ampas tahu merupakan bahan tambah pangan yang digunakan dalam pembuatan tempe. Ampas tahu adalah salah satu jenis limbah pembuatan tahu  yang berbentuk ampas yang didapatkan dari hasil pemisahan antara sari pati kedelai yang telah di saring. Ampas tahu pada penelitian ini diperoleh dari hasil pemisahan saripati kedelai. Ampas tahu, awalnya Diamkan ampas tahu selama semalaman, bisa ditaruh di nampan. Kukus ampas tahu sampai matang 35-45 menit, Taruh ampas tahu di kuali untuk disangrai sampai kandungan airnya berkurang (sangrai selama 25 menit,) lalu tuang ampas tahu di nampan biarkan dingin (kurang lebih 1 jam) Beri ragi, aduk dengan sendok. Masukkan kedalam plastic, daun pisang, daun coklat Taruh di rak kawat yang dialasi kain tipis, tutup dengan kain di fermentasi dalam waktu 1,2,3,dan 4 hari. Penelitian ini sudah pernah dilakukan sebelumnya, perbedaannya adalah penelitian sebelumnya tidak memakai uji protein dan uji kadar air untuk menghasilkan standar tempe yang berkualitas. Berdasarkan hasil penelitian, analisa kadar air tempe  yang paling banyak menghasilkan Kadar air yang paling tinggi diperoleh pada waktu fermentasi hari ke-4 yaitu 72 %. Sedangkan kadar air yang terendah diperoleh pada waktu fermentasi hari ke-1 yaitu 40 %. Semangkin lama waktu fermentasi maka semangkin tinggi nilai kadar air yang dihasilkan.
PEMANFAATAN LIMBAH AMPAS TEBU SEBAGAI ADSORBEN PENYERAPAN LOGAM DAN KESADAHAN PADA AIR SUMUR
Authors: Annisa Nur , Muhammad Muhammad , Masrullita Masrullita , Zulnazri Zulnazri , Dewi Rozanna
Published: September 2023

Ampas tebu mengandung berbagai komponen biomassa, selulosa dan lignin yang berpotensi untuk dikonversikan menjadi sumber arang pada proses adsorpsi. Penelitian ini bertujuan untuk memanfaatkan limbah ampas tebu sebagai adsorben penyerapan logam besi dan kesadahan dalam air sumur. Penelitian ini dilakukan dengan pembuatan adsorben, uji kinerja adsorben dengan memvariasikan massa dan waktu kontak yang bertujuan untuk melihat kadar dan kapasitas penyerapan. Penelitian ini hanya memvariasikan massa adsorben ampas tebu dengan jumlah 2,5; 3; 3,5; dan 4 gram dengan memvariasikan waktu kontak yaitu 30, 60, 90, dan 120 menit. Hasil yang diperoleh menunjukkan bahwa kadar penyerapan logam besi maksimum diperoleh 99,81%, sedangkan pada kesadahan diperoleh 53,846% dengan massa adsorben 4 gr. Lalu kapasitas penyerapan logam besi diperoleh 0,042 mg/gr, sedangkan pada kesadahan diperoleh 0,07 mg/gr.Kata Kunci : Adsorpsi, Ampas Tebu, Arang Aktif, Logam Besi (II) , Ion Ca2+
Pemanfaatan Limbah Kulit Pisang Raja Sebagai Bahan Pembuatan Glukosa Menggunakan Katalis Asam Sulfat
Authors: Azni Zulfida Najla , Jalaluddin Jalaluddin , Kurniawan Eddy , Ginting Zainuddin , Masrullita Masrullita
Published: September 2023

Pisang adalah salah satu bahan makanan yang sangat potensial dijadikan produksi berbagai makanan. Hasil panennya melimpah di Indonesia, begitu pula dengan limbah kulit pisang yang dihasilkan. Limbah kulit pisang merupakan salah satu bahan yang tinggi karbohidrat sehingga berpotensi tinggi untuk diolah menjadi berbagai produk, salah satunya glukosa melalui proses hidrolisis. Penelitian ini bertujuan untuk menghasilkan glukosa dari limbah kulit pisang raja dan mempelajari pengaruh konsentrasi katalis asam sulfat pada reaksi hidrolisis kulit pisang terhadap hasil glukosa yang diperoleh. Selanjutnya kulit pisang raja di hidrolisis menggunakan larutan H2SO4 dengan konsentrasi 0.5 M dan 1 M. Waktu yang digunakan yaitu 45 menit,60 menit, 75 menit dan 90 menit dalam berbagai suhu operasi yaitu 80oC, 90oC dan 100oC. Setelah dianalisis kandungan glukosanya menggunakan refraktrometer didapatkan glukosa tertinggi yaitu sebesar 30.4% pada suhu 100oC, waktu 90 menit dengan konsentrasi asam sulfat sebesar 1 M. Dengan yield tertinggi sebesar 78% dan konversi sebesar 76% pada suhu, waktu dan konsentrasi yang tebesar dari penelitian ini. Sehingga diketahui bahwa semakin tinggi suhu, semakin lama waktu hidrolisis dan semakin besar konsentrasi katalis yang digunakan maka semakin besar kadar glukosa, persentase yield dan konversi yang dihasilkan.
Pembuatan Saus Cabai Menggunakan Bahan Pengawet Alami Kitosan
Authors: Jannah Rauzatun , Suryati Suryati , Masrullita Masrullita , Sulhatun Sulhatun , Ishak Ishak , Ulfa Raudhatul
Published: September 2023

Saus merupakan salah satu bahan penyedap dan penambah cita rasa pada makanan yang diolah dari bahan utama maupun bahan pendukung lainnya. Kualitas produk saus dapat dilihat dari pengolahan cabai yang matang berkualitas baik sehingga didapatkan suatu produk yang berbentuk cairang kental seperti pasta, bahan-bahan yang digunakan dalam pembuatan saus sambal ini ialah cabai merah yang segar, tomat,bawang putih, gula, air, asam cuka dan bahan pengental seperti tepung maizena. Adapun bahan tambahan yang digunakan sebagai bahan pendukung dalam pengolahan saus sambal yaitu kitosan dari kulit udang sebagai bahan pengawet alami, buah pepaya sebagai bahan pengental dan wortel yang digunakan sebagai pewarna alami, penelitian ini dilakukan selama 1 bulan, dalam pembuatan saus sambal ini menggunakan empat variabel yaitu dengan membedakan masing-masing kosentrasi kitosan ; 0,5 %, 1%, 1,5%, dan 2 %. Untuk mengetahui pengaruh penambahan bahan pengawet  kitosan dalam saus sambal dan ketahan daya simpan suatu produk, maka diperlukan analisa kadar air, analisa derajat keasaman (pH), analisa viskositas, analisa jamur ( angka kapang dan khamir)dan analisa bakteri(angka lempemg total). Kandungan kadar air terendah pada saus cabai menggunakan kosentrasi kitosan 2% yaitu pada minggu ketiga yaitu 20,53%. Nilai pH terbaik yang diperoleh terdapat pada kosentrasi kitosan 2% yaitu 3,11. Kitosan mampu menekan pertumbuhan bakteri serta dapat memperpanjang umur simpan saus sampai dengan 21 hari pada kosentrasi 1,5 % dan 2% yang disimpan pada suhu ruangan.
PENGARUH BERAT BAHAN BAKU DAN WAKTU PIROLISIS PADA PRODUK SAMPING DARI PROSES PIROLISIS PADA LIMBAH PADAT HASIL PENYULINGAN MINYAK NILAM UNTUK PEMBUATAN BRIKET BIOARANG
Authors: Sari Gusti Indah , Ginting Zainuddin , Nurlaila Rizka , Meriatna Meriatna , Muarif Agam , Faisal Faisal
Published: September 2023

Briket bioarang adalah bahan bakar padat sebagai sumber energi alternatif pengganti bahan bakar minyak yang berasal dari limbah pertanian yang melalui proses karbonasi kemudian dicetak dengan tekanan tertentu baik dengan atau tanpa bahan pengikat (binder) maupun bahan tambahan lainnya. Penelitian ini bertujuan untuk menciptakan bioarang yang berasal dari limbah padat penyulingan minyak nilam dengan temperatur dan waktu pirolisis yang optimum sehingga diperoleh bioarang dengan nilai kalor yang tinggi. Penelitian pemanfaatan produk samping dari proses pirolisis pada limbah padat hasil penyulingan minyak nilam untuk pembuatan briket bioarang memiliki variabel berat bahan baku 600 gr, 1200 gr dan 1800 gr dengan variabel waktu 60, 90 dan 120 menit. Limbah padat yang terlebih dahulu telah dipotong menjadi ukuran yang kecil dan dikeringkan dibawah sinar matahari terlebih dahulu kemudian dimasukkan kedalam alat pirolisis untuk dikarbonisasi sesuai dengan variabel yang telah ditentukan, hasil dari pirolisis kemudian dimasukkan kedalam desikator untuk didinginkan selama 30 menit lalu dilakukan uji kadar air, uji kadar abu, uji kadar zat terbang, uji kadar karbon terikat, uji nilai kalor, uji SEM, dan juga uji laju pembakaran. Adapun hasil penelitian kadar air terbaik diperoleh pada berat bahan baku 600gr dan waktu 150 menit sebesar 5,72%, kadar abu terbaik diperoleh pada berat bahan baku 1800gr dengan wasktu pirolisis 60 menit adalah 4,28%, zat terbang terbaik diperoleh pada berat bahan baku 600gr dengan waktu pirolisis 150 menit adalah 9,11%, laju pembakaran tertinggi sebesar 0,1486 gr/menit, nilai kalor yang didapat pada berat baku 1200gr dengan waktu pirolisis 120 menit sebesar 5.291 cal/gr, berdasarkan uji SEM yang dilakukan dapat dilihat bahwa terdapat pembesaran pori-pori pada arang setelah aktivasi dibandingkan dengan pori-pori sebelum aktivasi. Kalor yang diperoleh menunjukkan bahwa briket bioarang limbah padat nilam dapat dimanfaatkan sebagai bahan bakar alternatif yang dapat diperbaharui.Kata kunci : Bioarang, karakteristik, limbah padat nilam dan pirolisis
FORMULASI, EVALUASI FISIKA DAN UJI STABILITAS POMADE DARI EKSTRAKSI MINYAK KEMIRI (Aleurites moluccana (L.) Wild)
Authors: Tamiogy Muhammad nur Ichsan , Sulhatun Sulhatun Sulhatun , Zulnazri Zulnazri Zulnazri , Dewi Rozanna , Kurniawan Eddy
Published: September 2023

Pomade adalah salah satu inovasi produk kosmetik rambut yang berbentuk padat dengan aroma yang harum karena ditambahkan oil essential. Tujuan membuat produk Pomade terbaik berdasarkan parameter proses terhadap suatu produk yang dihasilkan. Metode yang digunakan dalam pembuatan pomade pada penelitian ini yaitu menggunakan metode panas. Penelitian ini sudah pernah dilakukan sebelumnya, yang belum pernah dilakukan adalah perbedaan bahan baku dalam pembuatan pomade, yaitu pengunaan minyak kemiri Hasil dari penelitian ini didapatkan pembuatan Pomade untuk tingkat derajat keasaman (pH) didapatkan semua produk Pomada dengan tingkat keasaman yang sama yaitu 7, untuk organoleptik didapatkan untuk aroma terbaik pada sampel F dengan nilai 57, warna terbaik pada sampel O dengan nilai 60 dan tekstur pada sampel M dengan nilai 60 dan untuk daya sebar terbaik pada sampel N dengan penyebaran 7 cm. Berdasarkan uji organoleptik semakin tinggi dan konsentrasi minyak kemiri yang digunakan maka semakin bagus homogennya suatu produk Berdasarkan uji daya sebar semakin tinggi konsentrasi penggunaan minyak kemiri dan beeswax yang rendah yang digunakan maka semakin signifikan kenaikan daya sebar yang dihasilkan.
PENGARUH WAKTU FERMENTASI DAN MASSA BIOAKTIVATOR TRICO-G PEMBUATAN PUPUK ORGANIK CAIR DARI AIR CUCIAN BERAS
Authors: Barus Josua Lorent , Mulyawan Rizka , Azhari Azhari , Sulhatun Sulhatun , Zulnazri Zulnazri
Published: September 2023

Pupuk merupakan bahan-bahan yang mengandung satu atau lebih zat senyawa yang dibutuhkan oleh tanaman untuk tumbuh dan berkembang. Selain dibutuhkan oleh tanaman pupuk juga bertujuan untuk memperbaiki sifat fisika, kimia dan biologis tanah. Penelitian ini bertujuan untuk memanfaatkan air cucian beras yang banyak dibuang begitu saja dan tidak dimanfaatkan sebagai bahan baku pembuatan pupuk organik cair. Penelitian ini sudah pernah dilakukan seperti uraian diatas, yang belum pernah dilakukan adalah menggunakan Bioaktifvator Trico g dengan variasi waktu fermentasi. Pada penelitian ini yang ingin diketahui adalah unsur hara makro yaitu nitrogen, phosfor, kalium serta kandungan pH dari air cucian beras yang diharapkan dapat memenuhi kebutuhan unsur hara yang sangat diperlukan oleh tanaman dengan cara memfermentasikan dengan bantuan bioaktivator Tricoderma sp dan Gliocladium sp (Trico-G). Pada penelitian ini yang divariasikan adalah massa bioaktivator Tricoderma sp dan Gliocladium sp (Trico-G)  yaitu 30 gr, 40 gr, 50 gr, dan 60 gr dan waktu untuk proses fermentasi yaitu, 5 hari, 10 hari, 15 hari, dan 20 hari. Kandungan N, P, K pada pupuk organik cair yang terbaik ialah dengan waktu fermentasi 15 hari dan volume Trico-G 50 gr untuk Nitrogen 3,2%, Fosfor 2,7%, dan Kalium 3, 1% dan sudah sesuai dengan PERMENTAN Nomor 70/SR. 140/10/2011.
PENGOLAHAN LIMBAH KULIT BUAH BIT MENJADI PEKTIN DENGAN METODE EKSTRAKSI
Authors: Dalimunthe Pandu Alprayuda , Muhammad Muhammad , Nasrul ZA Nasrul ZA , Mulyawan Rizka , Muarif Agam
Published: September 2023

Pektin adalah senyawa polisakarida kompleks yang terdapat dalam dinding sel tumbuhan dan dapat ditemukan dalam berbagai jenis tanaman pangan. Pektin banyak digunakan dalam industri makanan, farmasi dan kosmetik sebagai bahan perekat, pengental dan penstabil agar tidak terbentuk endapan. Salah satu tanaman yang memiliki kandungan pektin adalah buah bit, pektin terkandung dalam seluruh bagian tanaman buah bit, oleh karena itu peneliti memanfaatkan limbah kulit buah bit yang sudah tidak dimanfaatkan lagi sebagai bahan baku pembuatan pektin. Penelitian ini menghasilkan pektin dari ekstraksi limbah kulit buah bit menggunakan pelarut HCI dan Etanol dengan variasi waktu dan suhu reaksi. Penelitian ini bertujuan untuk menentukan pengaruh suhu dan waktu ekstraksi terhadap pektin yang dihasilkan. Penelitian ini sudah pernah dilakukan sebelumnya tetapi menggunakan variasi konsentrasi pelarut asam sitrat sedangkan pada penelitian ini menggunakan pelarut asam klorida dan etanol dengan variasi suhu dan waktu ekstraksi. Variabel bebas yang digunakan pada penelitian ini yaitu suhu 80◦C, 85◦C dan 90◦C dengan waktu 60 menit, 90 menit, 120 menit. Sedangkan variabel terikat yang digunakan yaitu rendemen, uji kadar air, kadar metoksil, kadar galakturonat. Hasil penelitian didapatkan rendemen pektin tertinggi 35,433%, kadar air terendah 2,29%, kadar metoksil tertinggi 8,06% dan kadar galakturonat tertinggi 82,7% pada suhu 90oC dengan waktu 120 menit. Pembuatan pektin dari limbah kulit buah bit yang sudah memenuhi Standar Nasional Indonesia yaitu kadar air dan kadar metoksil.
PRODUKSI GAS HIDROGEN DARI AIR LAUT DENGAN METODE ELEKTROLISIS PHOTOVOLTAIC (PV) MENGGUNAKAN ELEKTRODA KARBON
Authors: Safrijal Muhammad , Hakim Lukman , Meriatna Meriatna , Muhammad Muhammad , Suryati Suryati
Published: September 2023

Hidrogen merupakan salah satu energi terbarukan yang mempunyai banyak kelebihan dibanding dengan energi terbarukan lainnya.  Salah satu metode yang menjanjikan untuk menghasilkan gas hidrogen adalah dengan metode elektrolisis air laut yang sumbernya tidak terbatas. Metode elektrolisis pada penelitian ini menggunakan arus listrik Photovoltaic dan air laut dengan volume elektrolit 3500 ml, waktu elektrolisis 15, 30, 45 dan 60 menit dengan menggunakan elektroda karbon pemilihan jenis reaktor berbentuk persegi volume 4500 ml, kondisi operasi 32°C dan 1 atm. Adapun yang menjadi variabel bebas yaitu tegangan 5, 10, 15 dan 20 volt. Dengan variasi waktu hasil kajian menunjukkan bahwa tegangan sangat berpengaruh terhadap penguraian air laut menjadi gas hidrogen. Hasil flow rate gas hidrogen yang paling tinggi didapat pada tegangan 20 volt dengan waktu 60 menit sebesar 11,5 ml/menit. Hasil kajian waktu elektrolisis terhadap penguraian air laut menjadi gas hidrogen tidak berpengaruh signifikan. Tegangan 20 volt menunjukkan hasil gas hidrogen yang tinggi.
APLIKASI PID LEVEL CONTROL PADA THREE PHASE SEPARATOR (221-D9002) PT PERTAMINA EP CEPU DENGAN MENGGUNAKAN HYSYS INTERCAFE MATLAB
Authors: Razin Muhammad , ZA Nasrul , Muhammad Muhammad , Hakim Lukman , Mulyawan Rizka , Ulfa Raudhatul
Published: September 2023

Penelitian Sistem kontrol Proportional, Integral dan Derivative (PID) merupakan kontroller untuk menentukan presisi suatu sistem instrumentasi dengan karakteristik adanya umpan balik pada sistem tersebut (Feed back). Separator adalah tabung yang mempunyai tekanan dimana berfungsi untuk memisahkan fluida dari sumur pengeboran menjadi cairan, cairan dan gas untuk alat three phase separator dengan prinsip kerja yang sama yaitu pemisahan berdasarkan perbedaan densitas. Adapun metodologi penelitian ini adalah membuat model steady state Three Phase Separator, kemudian mengubah model steady state menjadi model dynamic, lalu membuat model kontrol PID, setelah itu melakukan tuning terhadap kontrol PID dan melakukan pengujian terhadap kontrol PID, dengan melakukan gangguan pada set point. Tujuan penelitian ini adalah untuk mendapatkan waktu respon tercepat terhadap gangguan pada level control serta mendapatkan variable Kc, Ti dan Td terbaik. Hasil dari pengaplikasian sistem kontrol PID maka didapatkan waktu tercepat yaitu 0.51 menit dengan nilai Kc= 18,5 Ti= 27,5 dan Td=0,1542 pada setpoint 36-38% Sedangkan waktu terlama pada hasil pengujian kontrol PID dengan mengubah level dari 40% menjadi 38%, yaitu 0,54 menit dengan nilai Kc= 18,5, nilai Ti=27,5 dan Td= 0,1542.