bluuebunny/crossref_metadata_2025 huggingface dataset:
Adaptasi Logika Media Sosial Sebagai Strategi Komunikasi Politik Gerindra Menjelang Pemilu 2024
Authors: Gunawan Tedi
Published: May 2024

Perkembangan media sosial berbasis internet membuat peran media sosial saat ini semakin meningkat secara signifikan, terutama di bidang politik. Bahkan, elektabilitas suatu partai dapat dipengaruhi oleh impresi publik yang dibentuk oleh media sosial. Dari fenomena tersebut, penulis secara khusus tertarik untuk mengkaji program dan strategi media sosial twitter dan facebook dari partai Gerindra. Tujuan penelitian ini adalah untuk menganalisis bagaimana penggunaan media sosial oleh partai Gerindra mempengaruhi citra dan dukungan publik terhadap partai tersebut. Penelitian ini sendiri menggunakan metode kualitatif dengan studi analisis wacana yang mengadaptasi logika media sosial dari Van Dijk-Poell yakni programabilitas, popularitas, konektivitas, dan datafikasi ke dalam komunikasi politik yang dilakukan Gerindra melalui media sosialnya. Hasil penelitian menunjukkan bahwa Gerindra dengan baik telah mengimplementasikan logika media sosial dalam strategi pemasaran politiknya. Partai ini juga berhasil menciptakan ikatan yang kuat serta menarik perhatian publik, khususnya generasi muda, yang kemudian menjadi manifestasi dalam pemilu 2024 mendatang. Strategi ini menghasilkan tren positif bagi partai, hasil beberapa survei pada tahun 2021 menunjukkan bahwa kaum milenial dan Generasi Z lebih cenderung memilih Prabowo (Ketua Umum Gerindra) sebagai presiden. Seiring dengan dominasi media sosial, konsep logika media sosial menjadi suatu hal yang tidak dapat ditinggalkan bagi para aktor politik. Terakhir, dengan kemajuan teknologi, diperkirakan persaingan partai politik digital di media sosial akan semakin ketat pada tahun 2024.
ECONOMIC STRATEGIES AND RISKS OF INNOVATIVE MANAGEMENT OF INTEGRATION-DIVERSIFICATION PROCESSES OF CORPORATE ASSOCIATIONS
Authors:   PHEI «Rauf Ablyazov East European University», Kolodynskyi Sеrhii , Lozova Tetiana ,   State Organization «Institute of Market and Economic & Ecological Researchof the National Academy of Sciences of Ukraine», Storozhuk Oksana ,   Central Ukrainian National Technical University, Pitel Natalia ,   Central Ukrainian National Technical University
Published: May 2024

The article examines the integration and diversification processes of corporate associations, which are a difficult task and require a balanced approach to economic management and innovation. Economic strategies and risks of innovative management in the context of integration and diversification processes of corporate associations are considered.The stages of the formation of a comprehensive strategy for managing the development of the enterprise, which combines diversification and integration approaches based on deterministic-resultative technology, are defined and described. Expected results to be achieved at each stage of strategy implementation are specified. The importance of introducing a separate component at the stage of assessing the influence of stakeholders on the development of the enterprise is argued. This decision is aimed at obtaining the maximum synergistic effect from diversification and integration development, in particular through the management of the influence of interested parties. It is shown that this approach contributes to the optimal arrangement of the strategic pyramid for the development of an effective strategic set of development management of the enterprise, especially in the conditions of neo-technological reproduction.It is proposed to implement the process of forming a comprehensive strategy for managing the development of a corporate enterprise, which takes into account the neo-technological conditions of reproduction and is based on a general scientific approach to the creation of deterministic-resultative technology. The obtained research results will be useful for corporate enterprises when choosing a comprehensive strategy for managing their development in the conditions of neo-technological reproduction. By creating asynergistic strategic set based on the strategic pyramid for enterprises, it becomes possible to choose the right direction of development and ensure higher efficiency of building their potential with the help of optimally effective interaction of business units
ENSURING FINANCIAL STABILITY OF THE ENTERPRISE IN A CHANGINGENVIRONMENT
Authors:   Odessa National Maritime University, Versanova Halyna
Published: May 2024

The article explores the challenges of sustainable and secure economic development at the macro level, considering them as the foundation for ensuring the economic security of enterprises. Special attention is given to the directions for improving the functioning of enterprises through the utilization of contemporary methods and conditions for ensuring economic security.The article examines the challenges of sustainable and secure economic develop-ment at the macro level, considering them as the foundation for ensuring the economic security of water transport enterprises. The identified key issues in economic security and formulate macro-level development questions aimed at ensuring the stability and effectiveness of the long-term functioning of enterprises. Methods of ensuring economic security:-development and implementation of effective risk management strategies;-enhancement of financial stability of the enterprise;-implementation of modern monitoring and analysis systems for economic indicators;-tnsuring robust information security;-implementation of measures to strengthen the legal status of the enterprise;-regular training of personnel in the field of security and crisis management.Indicators of ensuring economic security. Conclusions on ensuring and managing the economic security of the enterprise in an unstable economy.The need for a systematic approach: In the conditions of an unstable economy, it is critically important to manage the economic security of the enterprise systematically, taking into account numerous external and internal fac-tors.Active risk management. Effective risk management plays a key role in ensuring economic security. Enterprises should develop and regularly update strategies for minimizing risks in accordance with changing economic conditions.Flexibility and adaptation. Flexibility in responding to changes in the economic environment and the ability to adapt become critical qualities for successful enterprises. Economic security requires constant monitoring and a quick response to new challenges.Innovation and technological upgrades. Investments in innovation and techno-logical upgrades contribute to strengthening the competitiveness of the enterprise, making it more resilient to economic shocks.
NARRATIVES IN THE MAKING
Authors: Gallinat Anselma
Published: May 2024

Despite the three decades that have passed since the fall of the Berlin Wall, the historical narrative of East Germany is hardly fixed in public memory, as German society continues to grapple with the legacies of the Cold War. This fascinating ethnography looks at two very different types of local institutions in one eastern German state that take divergent approaches to those legacies: while publicly funded organizations reliably cast the GDR as a dictatorship, a main regional newspaper offers a more ambivalent perspective colored by the experiences and concerns of its readers. As author Anselma Gallinat shows, such memory work—initially undertaken after fundamental regime change—inevitably shapes citizenship and democracy in the present.
A meta-analysis of the Prevalence and Risk Factors of Community-acquired MRSA among Students at Abasyn University in Peshawar, Pakistan
Authors: Rehman Bushra , Ikram Hira , Nasir Rabiya , Umar Aiman
Published: May 2024

Staphylococcus aureus is the most pathogenic species in the genus, having been linked to nosocomial infections as well as community-acquired infections. In healthy people, it frequently colonises the skin and mucous membranes asymptomatically, especially the anterior nares. These days, community-acquired MRSA is a significant issue. The goal of the current investigation was to determine MRSA's detrimental consequences in Khyber Pakhtunkhwa. Fifty samples were gathered from Abasyn University students in Peshawar for this purpose. The samples were taken using sterile nasal swabs, and they were inoculated on nutritional agar medium within eight hours. Catalase and coagulase tests revealed the presence of Staphylococcus aureus. Thirty of the fifty samples tested positive for Staphylococcus aureus. The following antibiotics were used: vincomycin, oxyacillin, augmentin, ampicillin, and foxittin. MRSA prevalence was 76.66%.
РОЗВИТОК СИСТЕМИ РЕГУЛЮВАННЯ ЛЮДСЬКОГО КАПІТАЛУ ПРОМИСЛОВИХ ПІДПРИЄМСТВ ЯК ОСНОВА ЇХ ЕКОНОМІЧНОЇ БЕЗПЕКИ ПРИ ТРАНСФОРМАЦІЙНИХ ЗМІНАХ ІНФОРМАЦІЙНОЇ ЕКОНОМІКИ
Authors: ЗІНЧЕНКО Олена , АНІСІМОВА Олена , СИВИЦЬКА Інна
Published: May 2024

У статті викладені авторські погляди на сутність та структуру людського капіталу підприємства. Визначено специфіку розвитку системи регулювання людського капіталу промислових підприємств.  Доведено триєдиний симбіоз категорій «інформаційна економіка», «розвиток людського капіталу» та «економічна безпека підприємства». Окреслено етапність функціонування системи розвитку людського капіталу. Доведено, що за умов інформаційної економіки така система повинна орієнтуватись на безперервне підвищення інформаційної спроможності працівників, їх інноваційно-креативних можливостей, адаптаційно-когнітивних  якостей, які слугуватимуть фундаментом використання можливостей трансформаційних змін з метою підвищення економічної безпеки промислових підприємств. Визначено вектори цілей розвитку людського капіталу промислових підприємств. Виокремлено базові характеристики людського капіталу, актуальні для умов трансформаційних змін в економіці.
Metode Pendidikan Berdasarkan Hadits Rasulullah SAW
Authors: Hidayat Farhan , Dalimunthe Aldi Wijaya , Rambe Siti Aisyah Br. , Hafiz M. , Julaiha Juli
Published: May 2024

Tujuan dari penelitian ini yaitu untuk memberikan informasi bagaimana metode yang dipakai Rasulullah dalam Pendidikan karena metode ini sangat penting dalam Pendidikan dilihat dari sebuah istilah dalam Bahasa Arab “الطريقة اهم من المادة “Artinya metode lebih penting dibandingkan materi yang disampaikan. Dari pernyataan ini dapat disimpulkan bahwa metode pembelajaran memiliki peran yang signifikan dalam proses pembelajaran. Pemilihan metode pembelajaran yang tepat akan memudahkan guru dalam mencapai tujuan pembelajaran secara efektif dan efisien. Metode dalam penelitian ini adalah studi Pustaka atau Library Reserch dengan menghimpun data penelitian dari khazanah literatur dan menjadikan dunia teks sebagai bahan utama analisisnya. Sumber-sumber lain yang relevan juga dapat menunjang dan memperkaya data yang diperlukan menggunakan buku-buku hadist yang membicarakan metode pembelajaran dari Rasulullah. Hasil dari penelitian ini menunjukkan bahwa ada beberapa metode yang digunakan Rasulullah dari penjelasan hadist dalam memberikan pembelajaran yaitu  Metode pembelajaran dengan keteladanan (perilaku yang baik dan Budi pekerti luhur), metode mengajar secara bertahap yaitu metode yang mengajarkan dari tahapan yang paling rendah ke tahapan yang paling tinggi, metode dialog dan tanya jawab yaitu menjelaskan dengan cara memberi jawaban bagi penanya dengan jawaban yang mudah dipahami, metode targhib (motivasi) dan targhib (ancaman) yaitu dengan memberi motivasi ke arah kebaikan dan memberi konsekuensi bagi yang melakukan kejahatan, metode nasehat yaitu memberikan nasehat nasehat yang baik, metode kepuasan logis yaitu mengajarkan Islam dengan memanfaatkan kepuasan intelektual yang diperoleh seseorang dari menaati suatu hukum-hukum agama Islam.
Dukungan Sosial Dan Pospartumblues Pada Ibu-Ibu Pasca Melahirkan
Authors: Yuriadi Yuriadi , Yanuar Rizqi
Published: May 2024

Postpartum is a mild disorder that can attack an individual's mental state after giving birth. The method used in this research is quantitative. Quantitative methods are research methods that are based on a positivist and correlational approach. Correlational research is research that focuses on finding out whether there is a relationship between two variables, namely the independent variable and the dependent variable. The independent variable is social support (X), and the dependent variable is postpartum blues (Y). The research subjects were 30 people who were mothers who had given birth in Surabaya. The results of the research show that there is a significant relationship between social support and postpartum in postpartum mothers in Surabaya with a correlation coefficient (rxy) = 0.038 and a significant p value of p= 0.083 (p>0.05), which means that the more The higher the social support obtained, the lower the postpartum experience.
Pentingnya Konseling Eksistensial Dalam Meningkatkan Makna Hidup Korban Pelecehan Seksual Pada Remaja
Authors: Khairati Annisaislami , Karneli Yeni , Netrawati Netrawati
Published: May 2024

Penelitian ini merupakan penelitian kualitatif deskriptif dengan menggunakan metode kajian pustaka. Pelecehan seksual yang terjadi pada remaja semakin meningkat dalam beberapa tahun terakhir. Hal ini menimbulkan dampak fisik maupun dampak psikis bagi korban pelecehan seksual. Konseling eksistensial dapat membantu korban pelecehan seksual untuk meningkatkan kembali makna hidup bagi korban. Hal ini dapat dilakukan dengan cara memberi sugensti-sugesti pada klien terhadap dirinya kemudian setelah itu memberikan dorongan, semangat untuk perubahan pada dirinya dan menciptakan pemahaman baru tentang dirinya dan merekonstruksi sikap-sikap dirinya terhadap sebuah masalah sehingga konseli mampu melaksanakan pilihannya dari pemahaman yang mereka pelajari dan mampu mempertanggung jawabkannya.
Systematic Literature Review: Pendekatan Eksistensial-Humanistik Untuk Mencegah Kekerasan Seksual Pada Mahasiswa
Authors: Daulay Aminah , Netrawati Netrawati , Karneli Yeni , Trisanti Desi
Published: May 2024

Kekerasan seksual adalah masalah yang kompleks di Indonesia termasuk perguruan tinggi, yang ditandai oleh peningkatan jumlah kekerasan seksual dan banyaknya kasus yang terungkap. Hal ini berdampak buruk pada kehidupan bermasyarakat dan bernegara di masa depan. Kejadian kekerasan seksual di perguruan tinggi saat ini sudah sangat mengkhawatirkan. Dilaporkan 77% kekerasan seksual telah terjadi di perguruan tinggi indonesia, dimana paling banyak terjadi pada rentang usia 18-21 tahun. Tujuan penelitian ini adalah untuk mengidentifikasi pendekatan eksistensial-humanistik untuk mencegah kekerasan seksual pada mahasiswa. Metode yang digunakan adalah systematic literature review berdasarkan artikel yang dipublikasikan pada Google Scholar. Hasil penelitian menunjukkan bahwa pendekatan eksistensial-humanistik dapat mencegah kekerasan seksual pada mahasiswa.
Analysis of public responses to political controversies in the beauty industry: A case study of Rose All Day and Esqa Brand owners in support of Israel
Authors: Nazahra Gusti Nadya
Published: May 2024

On October 30, 2023, Indonesia's beauty industry was shocked by the boycott of two well-known local brands, ESQA and Rose All Day. The trigger for this boycott was the actions of the owners of the two brands, Angelina Cindy and Tiffany Danielle, who gave support to Israel by "liking" Gal Gadot's controversial post. The public response to this action led to disappointment and boycott from most Indonesian netizens. This research uses a qualitative method with a literature study approach. Analysis was conducted on the chronology of events, public responses on social media, and apologies from brand owners. The data was analyzed to understand the impact of individual actions in the context of social media and how public responses affect brand reputation. A simple action such as a "like" on social media by a brand owner can trigger a large public response and significantly affect brand reputation. Public responses to political controversies can result in product boycotts and create pressure on companies to take a stand. The brand owners, in this case Angelina Cindy and Tiffany Danielle, responded by apologizing and clarifying their stance on the Israeli-Palestinian conflict. This incident highlights the complexity of public response, the impact of individuals in the age of social media, and the need for dialog and education in dealing with sensitive issues.
Konsep Pendidikan Akhlak Dalam Menuntut Ilmu Menurut Syaikh Muhammad Syakir
Authors: Carsinih Carsinih , Kurnaengsih Kurnaengsih , Romdhoni Abdul Aziz
Published: May 2024

Pendidikan akhlak merupakan suatu sendi keutamaan tingkah laku dan naluri yang berguna untuk menyongsong kehidupan yang lebih baik. Melihat fenomena generasi muda sekarang, tidak sedikit dari mereka yang belum mengetahui tentang bagaimana cara menuntut ilmu yang baik agar ilmu yang kita peroleh dapat bermanfaat bagi diri sendiri maupun orang lain. Sehingga diperlukan adanya konsep pendidikan akhlak dalam menuntut ilmu. Penelitian ini dibuat untuk mengetahui pendidikan akhlak dalam Islam dan untuk mengetahui konsep pendidikan akhlak dalam menuntut ilmu menurut Syaikh  Muhammad Syakir. Metode penelitian yang digunakan adalah penelitian pustaka (Library research), yaitu penelitian yang dilakukan dengan melakukan mengumpulkan data dari berbagai literatur dalam perpustakaan dan lainnya. Kesimpulannya adalah bahwa konsep pendidikan akhlak dalam menuntut ilmu menurut Syaikh Muhammad Syakir yaitu: Niat belajar, Membuat catatan, Menghormati guru, Memuliakan ilmu, Mengatur waktu belajar, Muroja’ah (mengulang kembali materi), Sopan santun, Menghargai teman, Memperhatikan guru, Bersikap tawadhu’ (rendah hati), dan Perbanyak doa kepada Allah SWT.
Nilai-Nilai Pendidikan Agama Islam Dalam Novel Ayana Journey To Islam Karya Ayana Moon
Authors: Alfina Mahra , Rusydi Ibnu , Wahidin Wahidin
Published: May 2024

Penelitian ini berjudul nilai-nilai Pendidikan agama islam dalam novel ayana nourney to islam karya ayana moon. Penelitian ini bertujuan untuk mengetahui isi novel ayana journey to islam dan nilai-nilai Pendidikan agama islam yang terdapat dalam novel ayana journey to islam. Metode penelitian yang digunakan yaitu library research atau penelitian kepustakaan, dimana untuk mencari data-data yang diperlukan dengan cara mencari dari berbagai sumber seperti buku, jurnal, skripsi terdahulu atau Pustaka-pustaka lainnya. Dari hasil penelitian ini dapat disimpulkan bahwa isi novel ayana journey to islam adalah novel yang menceritakan tentang kisah perjalanan hijrah seorang mualaf korea yang memutuskan untuk memilih islam sebagai jalan hidupnya. Nilai Pendidikan agama islam yang terdapat dalam novel ayana journey to islam adalah ada 4 nilai yaitu: nilai Pendidikan tauhid (keimanan), nilai Pendidikan ibadah, nilai Pendidikan akhlak dan nilai Pendidikan sosial.
Perbandingan Kemampuan Komunikasi Matematik Siswa Antara Yang Mendapatkan Model Pembelajaran Student Facilitator And Explaining Dengan Konvensional
Authors: Rahmayanti Dewi
Published: May 2024

Dalam penelitian ini, peneliti membandingkan dua model pembelajaran yaitu model pembelajaran student facilitator and explaining dan pembelajaran konvensional untuk melihat sejauh mana kedua model pembelajaran tersebut berperan dalam meningkatkan kemampuan komunikasi matematik siswa. Kemampuan komunikasi matematik yang akan dikaji dalam penelitian ini adalah komunikasi tertulis. Sedangkan untuk kemampuan komunikasi lisan dapat dilihat ketika proses pembelajaran, yaitu berupa kemampuan siswa dalam menyampaikan ide atau pendapatnya. Sehingga dengan demikian, yang menjadi fokus utama dalam penelitian ini yaitu kemampuan komunikasi tertulis.Penelitian ini bertujuan untuk mengetahui hasil perbandingan komunikasi matematik siswa yang mendapatkan model pembelajaran student facilitator and explaining dengan siswa yang mendapatkan pembelajaran konvensional.
Perbandingan Kemampuan Pemecahan Masalah Siswa Dalam Matematika Antara Yang Mendapat Pembelajaran Matematika Realistik (PMR) Dengan Pembelajaran Konvensional
Authors: Lestari Lesta , Sofyan Deddy
Published: May 2024

Penelitian ini dilakukan atas dasar pentingnya kemampuan pemecahan masalah yang menjadi fokus utama dalam pembelajaran matematika sekolah saat ini yang menghendaki dimulainya pembelajaran dengan pengenalan masalah yang sesuai dengan situasi (Contextual Problem). Salah satu pendekatan yang memulai pembelajarannya dengan masalah kontekstual agar siswa aktif untuk menemukan dan merekonstruksi kembali konsep-konsep matematika adalah Pembelajaran Matematika Realistik (PMR). Tujuan dari penelitian ini adalah untuk mengetahui kemampuan pemecahan masalah siswa dalam matematika yang mendapat PMR lebih baik daripada dengan pembelajaran konvensional.
Perbandingan Kemampuan Pemecahan Masalah Matematis Siswa Antara Siswa Yang Mendapatkan Model Pembelajaran Two Stay – Two Stray (Ts-Ts) Dengan Konvensional
Authors: Ristiani Herni
Published: May 2024

Tujuan dari penelitian ini adalah untuk melihat apakah kemampuan pemecahan masalah matematis siswa yang mendapatkan model pembelajaran Two Stay - Two Stray lebih baik dibandingkan dengan yang mendapatkan model pembelajaran konvensional dan mengetahui bagaimana aktivitas guru dan aktivitas siswa selama pembelajaran matematika dengan menggunakan model pembelajaran Two Stay - Two Stray. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan desain penelitian  Randomized Pretest–Postest Control Group Design. Populasi pada penelitian ini adalah seluruh siswa kelas X SMAN 8 Garut dengan sampel kelas dipilih secara acak yaitu X-2 dan X-4, kelas X-2 sebagai kelas eksperimen dan kelas X-4 sebagai kelas kontrol dengan kelas eksperimen menggunakan model pembelajaran Two Stay - Two Stray dan kelas kontrol menggunakan model pembelajaran konvensional. Instrumen yang digunakan dalam penelitian ini adalah tes pemecahan masalah matematis yang berupa pretest dan posttest, sedangkan untuk memperoleh data mengenai aktivitas guru dan aktivitas  siswa selama pembelajaran matematika dengan menggunakan model pembelajaran  Two Stay -Two Stray digunakan lembar observasi. Pretest diberikan untuk mengetahui kemampuan awal siswa sebelum diberikan pembelajaran, sedangkan posttes digunakan untuk mengetahui kemampuan siswa setelah diberikan pembelajaran.
Model Advance Organizer dalam Pembelajaran Matematika untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis Siswa
Authors: Luritawaty Irena Puji , Nuraeni Reni
Published: May 2024

Latar belakang penelitian ini adalah masih rendahnya prestasi di bidang matematika dalam hal kemampuan pemecahan masalah.
Efektivitas Metode Pembelajaran Think Talk Write untuk Meningkatkan Kualitas Perkuliahan Aljabar dan Trigonometri
Authors: Maryati Iyam
Published: May 2024

Tujuan utama dari penelitian ini adalah meningkatkan prestasi belajar mahasiswa dalam mata kuliah Aljabar dan Trigonometri, mendeskripsikan tanggapan mahasiswa terhadap metode pembelajaran Think Talk Write , dan meningkatkan aktivitas belajar mahasiswa.
Pengaruh Penggunaan Model Pembelajaran Problem Based Instruction terhadap Kemampuan Pemecahan Masalah Matematis
Authors: Margana Akhmad
Published: May 2024

Learning mathematics is meaningful when students can connect mathematical ideas, connecting mathematics to other disciplines, and connecting mathematics with everyday life, so that students can develop the skills. This quasi-experimental study aimed to determine. whether the mathematical problem-solving ability of students who get a Instruction problem based learning model better than students who received conventional learning models. The sample population in this study were 16 high school students Garut. These results indicate. that: ( 1 ) mathematical problem-solving ability of students who get a Instruction problem. based learning model better than students who received conventional learning models; ( 2 ) an increase in mathematical problem-solving ability of students who have learning model of Problem Based Instruction high category; ( 3 ) students' attitudes toward learning model of Problem Based Instruction in general showed a positive attitude.
Some selected properties of the recombinant aminoacylase from Escherichia coli LGE 36
Authors: Yepremyan Hasmik
Published: May 2024

Background: Aminoacylase has seen extensive use in the synthesis of L-amino acids. L-amino acids are widely used in the food and medical industries, as well as in healthcare. The effect of metal ions and inhibitors on the enzyme activity of recombinant intracellular aminoacylase of Escherichia coli LGE 36 was studied. Acetyl-D,L-methionine and glycyl-L-methionine dipeptide were used as substrates. It has been shown that with the addition of Co2+ ions, the acylase activity of the recombinant enzyme towards N-acetyl-D,L-methionine increases 3 times. In the case of glycyl-L-methionine, the peptidase activity of the recombinant aminoacylase of Escherichia coli LGE 36 increases more than 40 times. A number of other metal ions studied do not stimulate the hydrolytic activity of the enzyme, moreover some of them even inhibit it. PCMB completely inactivates the recombinant aminoacylase, EDTA reduces enzyme activity by 85%.
Objective: This study aims to investigate how metal ions and inhibitors affect the enzyme activity of recombinant intracellular aminoacylase Escherichia coli LGE 36.
Methods: In this study, a recombinant strain-producer of aminoacylase derived from Escherichia coli LGE 36 was employed. Escherichia coli cells were cultured in M9 minimal medium supplemented at 37°C. To assess aminoacylase activity, assays were conducted at 37°C using a reaction mixture of 0.2 ml final volume comprising 100 mM Na, K-phosphate buffer at pH 7.0, 0.2 mM CoCI2, 40 mM N-acetyl-D, L-methionine, and the enzyme in the appropriate concentration. Acylase activity was quantified as the amount of enzyme catalyzing the formation of 1µmol of L-methionine within 1 minute at 37°C and pH 7.0.
Results: Some characteristics of the recombinant intracellular aminoacylase from E. coli LGE 36 were determined.  For investigating the impact of metallic ions and inhibitors, acetylmethionine and glycylmethionine were employed as the substrates.
Conclusion: The present study and the choice of right strategies for functional food products allows optimizing the process for production of optically active amino acids using the recombinant enzyme to obtain food and feed additives.
Keywords:  ion, metals, inhibitors, acetylmethionine, glycylmethionine, recombinant aminoacylase from Escherichia coli, enzyme.
Design and Implementation of Multi-Function Logistics Robots for Intelligent Warehousing
Authors: Wang Wei , Hao Lina , Chen Jiangcheng
Published: May 2024

The collaborative task of logistics robots is a very big challenge for the intelligent warehousing industry. In order to improve the effectiveness of task deployment for intelligent warehousing, this paper proposes a novel strategy of collaborative tasks for logistics robots, which includes three different functional robots, named transport robot which is used for transportation tasks, mobile manipulator used for sorting goods, and pick-and-place robot. All of these robots have an omnidirectional mobile base, which allows them to move in any direction, rotate in place, and navigate with the artificial potential Field (APF). Finally, the experimental verification proves clearly that the logistics robot cooperates well to complete the tasks of outbound and inbound goods and shows great flexibility under an unstructured environment.
Research on Stability of Integral Type Second Order Variable Structure Control for Aircraft Pitch Channel
Authors: Cong Xiao , Lei Junwei , Wang Hong
Published: May 2024

A simplified model for the angle of attack tracking in the pitch channel of unmanned aerial vehicles is proposed. Based on the traditional second-order sliding mode control, the stability problems of the fractional power design of the traditional second-order sliding mode are pointed out, and an improved integral second-order variable structure control method is proposed. At the same time, a softening function design is used to construct the symbol function of the traditional second-order sliding mode. And in the selection of sliding mode surfaces, an integral type sliding mode surface was adopted. Finally, the time-varying Lyapunov function was selected and stability proof was provided under sufficient big gain conditions. After the sliding surface approaches zero, based on the approximate treatment of the simplified model, a proof of Hurwtiz property of the sliding surface is provided, ensuring that the angle of attack tracking error approaches zero and the control of the angle of attack tracking is realized . Finally, the control effect of second-order sliding mode control for unmanned aerial vehicle angle of attack tracking was presented through digital simulation. At the same time, the perturbation problem of control variables in the completely unknown situation of the model was considered, and the control effect was almost unaffected. It can still maintain the stability of the entire system and realize the angle of attack tracking, thus it demonstrates the effectiveness of the design method provided in this paper.
An Intelligent Lotus Root Harvesting Equipment
Authors: Feng Yan , Yue Jixiang , Liu Yancong , Jiang Shengqun , Fan Changfeng
Published: May 2024

A fully hydraulic intelligent lotus root harvester has been designed to solve the difficult problem in the harsh muddy water environment of the lotus pond. Power distribution is achieved through proportional hydraulic pumps, proportional speed control valves, directional valves, and low speed high torque motors, Forward and reverse control and hydraulic flow adjustment to achieve speed changes such as forward, backward, and turning of the machine. Accurately regulate speed and direction to meet the walking and transition requirements of Lotus Pond; Innovatively designed a chassis structure with the core of “wide rubber track +buoyancy box+ four point linkage lifting device”, which can adapt to different operating water depths; Hydraulic, pneumatic, and electric joint control, Realize remote control of low-pressure and high flow jet, The chain reversing and swinging mechanism integrates chain reversing, lifting, and jetting to achieve swinging jetting, Dynamically adjusting the distance between the jet unit and the mud surface, Vigorously improving the efficiency of low-pressure and high-flow jet.
Design and Implementation of Post-Disaster Search and Rescue Robot Based on Beidou Navigation and Positioning System
Authors: Bing Jigeng , Zhang Qiang , Liu Xinye
Published: May 2024

For a long time, human beings have often been seriously affected by various disasters, and the first time to go into the scene when a disaster occurs, to understand the most comprehensive information about the disaster, in order to minimize the loss. In this paper, a post-disaster search and rescue robot is designed for the needs of performing search and rescue tasks. The four-track mobile structure is used, combined with the Beidou navigation and positioning system, to design the overall scheme of the robot, and to design and calculate the important parts. SolidWorks software was used to perform 3D solid modeling, adjust the size according to the fit, and render the model with Keyshot software. Ansys software is used to perform static finite element analysis on the main load-bearing components to prove that their deformation meets the design requirements. Finally, the physical prototype of this search and rescue robot was completed using the available materials and conditions.
Autonomous Underwater Vehicle (AUV) Hover Control Through Adaptive Fuzzy Control
Authors: Wang Zongsheng , Yang Yulin , Xu Kaixuan , Zhang Fangzhen , Zheng Jiaqi
Published: May 2024

Adaptive fuzzy control is employed in this paper for identification and modeling of AUV parameters, addressing the issues of inaccuracy and susceptibility to interference within the AUV mechanism model. This paper explores the application of fuzzy control in AUV modeling, with an adaptation law designed to respond to environmental changes. This law helps mitigate issues such as model inaccuracy and uncertainty by allowing for parameters to be adjusted dynamically. Furthermore, a sliding mode controller is introduced for enhanced robustness during hover operations. Through extensive simulations in MATLAB and SIMULINK, the efficacy and reasonableness of this method are demonstrated.
Cooperative Control Design for Fuzzy Belt Conveyor Systems with Multi PMSMs
Authors: Li Qiying , Zhang Yuan , Yue Yanbo , Li Chenming
Published: May 2024

There are various uncertainties in the belt conveyor system. Therefore, it is necessary to describe accurately and compensate for them for reducing system errors and control costs. This paper proposes a method by applying fuzzy set theory to establish a fuzzy dynamic model, including the belt and PMSMs. Then, an exponential robust controller with an adaptive tension force is designed to achieve the fuzzy belt-PMSMs system uniform boundedness and uniform ultimate boundedness. Finally, a series of simulation experiments are performed to verify the effectiveness of the proposed method. The simulation experiment implies the advantages of our method in reducing system errors and saving control energy.
Pre-Assessment of Vibration State of Twin-Screw Pump Based on Two-Level Fuzzy Comprehensive Evaluation
Authors: Wu Chao , Xiang Chao , Mao Xuyao , Chen Min , Huang Wenhao , Jin Xiang
Published: May 2024

Due to the many parts of the twin-screw pump, each part has multiple parameters. These parameters usually show mixed technical states, making it difficult to select the parts with excellent parameters to assemble the pump. Based on analyzing the factors affecting the vibration state of the twin-screw pump, this paper establishes its two-level fuzzy comprehensive evaluation mathematical model. By creating membership functions and combining them with the measured data, the technical state of each parameter is quantified to realize the pre-assessment of the vibration technical state of the twin-screw pump. The example shows that the application of the two-level fuzzy comprehensive evaluation method in this field is feasible.
Study of Carbon Dioxide Phase Transition Characteristics Based on Electrothermal Excitation
Authors: Li Pengtao , Wang Taikun , Qiang Xinwei , Shi Qingsan , Bai Jianqiang , Shen Bailiang , Wang Heng
Published: May 2024

Aiming at the problems such as poor security of heating powder, ablation of residual reagent and difficult cleaning, the carbon dioxide (CO2) phase transformation system was excited by electrothermal excitation. Considering the physical property distortion of CO2 in the near critical attached region, a mathematical model of electrothermal excited phase transition of CO2 was established by using the real gas comparison state equation. Combined with the phase transition experiment of CO2 under electrothermal excitation, the phase transition characteristics of CO2 by electrothermal excitation are obtained. The simulation and experimental results show that the electrothermal excitation of CO2 phase transition is safe, feasible and stable, the calculation deviation of the mathematical model is less than 8.1%. and the reaction time is closely related to the filling coefficient, filling mass and heating power. The simulation results have certain guiding significance for controlling the electrothermal excitation and release process of carbon dioxide phase transition, shortening the excitation time and broadening the application field of CO2 phase transition energy system such as Mars exploration in the future.
Lubrication Performance Analysis of Tilting Pad Journal Bearing with Dynamic and Static Pressure
Authors: Zou Rui , Chen Ming , Xu Sen , Wang Xiuli
Published: May 2024

The application of bearing technology in the field of intelligent equipment and special robots continues to promote technological innovation and industrial upgrading, such as the improvement of bearing materials and the development of intelligent bearings, which helps to improve the performance and operation efficiency of equipment. In this paper, the model of dynamic and static pressure tilting pad journal bearing is established, and the influence of eccentricity and preload on the static characteristics of dynamic and static pressure tilting pad journal bearing is studied. The results show that along the rotation direction of the journal, the oil film thickness decreases gradually, the static pressure of the pad increases gradually, and the lower pad is the main bearing pad; With the increase of eccentricity and preload coefficient, the bearing load coefficient and friction coefficient also increase.
Analysis of Atomization Characteristics of Gas-Liquid Two-Phase Flow Nozzle Based on CFD
Authors: Wang Liang , Chen Tianming , Wu Mingchao , Wang Qi , Sun Yuyang
Published: May 2024

As a key component of the mine spray dust reduction system, the atomization effect of the nozzle directly affects the dust reduction efficiency of the nozzle, and the effective atomization range of the nozzle determines the atomization effect of the nozzle. In this paper, the VOF two-phase flow model and turbulence model are established by Fluent simulation software for the nozzle of gas-liquid two-phase flow structure. The distribution of gas-liquid two-phase in the nozzle and the influence of gas pressure, liquid velocity and gas-liquid channel diameter ratio on the atomization effect of the nozzle are studied. The simulation results show that when the gas pressure increases from 0.3Mpa to 0.8Mpa, the effective atomization range of the nozzle increases from 0.65m to 1.65m. When the liquid velocity increases from 0.2m/s to 0.8m/s, the effective atomization range of the nozzle decreases from 1.45m to 0.4m. When the gas-liquid channel diameter ratio increases from 0.5 to 1, the effective atomization range of the nozzle increases from 1.1m to 1.8m.
Dynamics Analysis of a Three-Motor-Driven Scraper Conveyor
Authors: Pei Zhengkun , Zhang Qiang , Bai Jingru
Published: May 2024

In response to the considerable fluctuations in motor load observed in traditional scraper conveyors employing dual-motor propulsion at both the machine’s head and tail, we propose a novel three-motor drive configuration tailored explicitly for scraper conveyor systems. Leveraging the SGZ1200/2100 model scraper conveyor as our focal point and considering real-world operating conditions, we have engineered and assessed the dynamic simulation models for both dual-motor and three-motor driven structure. This thorough analysis has yielded torque characteristic curves for each motor within both configurations under both zero-load and full-load conditions. Our findings unequivocally demonstrate that the scraper conveyor employing the three-motor drive configuration excels in mitigating torque fluctuations at the machine’s tail sprocket. This innovative design effectively minimizes torque differentials among adjacent motors, thereby furnishing invaluable data points for advancing research into the domain of multi-motor-driven scraper conveyor systems. This study serves as a promising stepping stone for future investigations in this burgeoning field of study.
Research on Synchronous Control System of Multi-Motor Driven Scraper Conveyor
Authors: Bai Jingru , Zhang Qiang , Pei Zhengkun
Published: May 2024

In the domain of conventional dual or triple-drive scraper conveyors, the bedrock of coal transportation lies in the utilization of motor-driven chains located at both the head and tail ends. This operational framework frequently necessitates recurrent, high-load initiations. Consequently, these scraper conveyors are prone to a spectrum of challenges, encompassing power inadequacies, vexing initiation procedures, motor overheating incidents, and chain integrity breaches. To address these formidable impediments, this article introduces an innovative paradigm: the uniformly distributed multi-motor-driven scraper conveyor. Within this context, a comprehensive array of control models is conceived, featuring both a direct-drive control model employing permanent magnet motors and a synchronous control model for the orchestration of multiple motors. Rigorous theoretical analyses and simulations, executed using the MATLAB/Simulink platform, illuminate a compelling revelation: when matched for equivalent transport capacities, the power prerequisites of the uniformly distributed three-motor-driven scraper conveyor experience a marked reduction. Extending this discourse, the article proceeds to delineate multi-motor control paradigms, spanning the domains of parallel control, master-slave control, and deviation-coupled control. Subsequently, a meticulous comparative analysis unfolds, elucidating the respective merits and demerits of these three synchronous control methodologies, all rooted in the crucible of simulation-derived results.
A Path Planning Method Based on Bio-Inspired Neural Network for Cleaning Robots
Authors: He Chunhao , Wang Baoren , Wang Jie , Liu Weilong , Cui Hu
Published: May 2024

Aiming at the problem that the bio-inspired neural network algorithm consumes a long time when the cleaning robot deals with the path offset problem, and the actual traversal route has a large deviation from the ideal route, which increases the repetition rate of traversal. In this paper, we propose a path planning method that combines algorithmic improvement of bio-inspired neural network algorithms to solve the path offset problem by using heuristic functions to search for the point with the minimum cost, which improves the traversal coverage and shortens the time required for traversal. For this purpose, we binarize the map information in the real environment to construct a raster map and assign different values to the raster to display the state according to different environmental information. Compared with the traditional bio-inspired neural network algorithm, this algorithm is simple and efficient, easier to search the optimal path, and solves the problems of path offset, traversal repetition rate, etc. MATLAB simulation results show that the improved algorithm has improved the traversal efficiency in terms of the route offset problem, the improved traversal paths take shorter time, and the length of the planned path is shorter.
Study on Vibro-Acoustic Characteristics and Suppression of Plate-Cavity System
Authors: Su Jinpeng , Jiang Yiqiang , Zhang Qiang , Hu Zhengmin
Published: May 2024

Plate is widely used structure in marine, aerospace, and vehicle engineering. It is usually suffered from fluctuated forces and will vibrate and radiate noise. Coupled with acoustic cavity, there will be a complex vibro-acoustic coupling phenomenon, which will aggravate the vibration and acoustic radiation. In this paper, a negative capacitance piezoelectric shunt damping technique is used to suppress the vibro-acoustic response of the plate-cavity system. The multi-field coupling control model is established, and the acoustic vibration response of the system is studied. Through numerical analysis, it is concluded that the negative capacitance piezoelectric shunt technology can effectively suppress the vibro-acoustic response of the plate-cavity system.
Sound Transmission Analysis of Laminated Plate Under Arbitrary Boundary Conditions
Authors: Qiu Fangxu , Zhang Qiang , Su Jinpeng , Hu Zhengmin
Published: May 2024

Underwater robots necessitate materials possessing excellent strength and sound transmission properties to facilitate communication via acoustic waves. Composite material plates, exemplified by laminated panels, fulfill this requirement. A novel approach is proposed to analyze the sound transmission properties of the laminated panels in this study. Using Hamilton principle and first-order shear deformation theory (FSDT), energy functional of the laminated panels is formulated. On basis of plane wave transmission theory and continuity at fluid-structure interfaces, the acoustic-structural coupling effect is introduced. An advanced Fourier series expansion technique is employed to expand the displacement components of plates, and the fully acoustic-vibration coupled model is then developed. The influences of crucial parameters, including boundary conditions, incident angle, and aspect ratio are examined on sound transmission loss(STL) of the plates. The findings in this paper furnish valuable theoretical insights for the design of robotic sonar structures.
Land-Air Integrated Patrol Management and Control Platform of Converter Station Based on Patrol Data Integration
Authors: Yang Haifeng , Wang Jian , Yao Chuantao , Bao Ye , Mo Yunxiao
Published: May 2024

This paper designs a land air integrated inspection and control platform for converter stations based on inspection data integration. In the Hardware part, LKT4304 encryption chip, DJI Mavic Mini Drone FlyCam UAV and Hardware security chip are designed. In the software part, based on the patrol data integration, the air-land integrated patrol control route of converter station is planned, and the air-land integrated patrol control logic of converter station is generated, thus realizing the air-land integrated patrol control of converter station. The test results of the platform show that the designed integrated patrol management and control platform for land-air patrol data of converter station has good performance, and all functional modules are running in order, which is reliable and has certain application value, and has made certain contributions to improving the operation safety of converter station.
Research on Surface Tension Tank Technology of Aerospace Cryogenic Propellant
Authors: Ma Tianju , Yu Bin , Huang Cheng , Wang Yalong , Yang Xuehu , Li Ganggang , Gu Sendong , Hou Yanhui , Chang Xin
Published: May 2024

This paper briefly introduces the research progress of long-term on-orbit storage and supply technology of cryogenic propellant, analyzes the task characteristics, sorts out the technical difficulties, and puts forward the key technologies. The passive thermal protection technology, active heat transfer technology, Vapor cooled shields technology, thermodynamic vent system technology, pressure control technology, liquid mixing technology and adiabatic support technology are described respectively, which provides a reference for the research of space low temperature storage and supply technology.
Research on Evaluation of Intelligent Equipment Support Scheme Based on Intuitionistic Fuzzy Multi-Attribute
Authors: Jiao Jingyi , Guo Jie , Shi Shuai
Published: May 2024

How to scientifically evaluate the intelligent equipment support scheme is the key and difficult point of intelligent equipment support, and the evaluation conclusion is very important for intelligent equipment maintenance support and supply activities. This paper focuses on the characteristics of intelligent equipment support, and puts forward the evaluation theory and method based on intuitionistic fuzzy multi-attribute decision making. From the calculation steps of the evaluation model and the results of the case analysis, it can be seen that the scientific and feasible problems of the intelligent equipment support scheme can be solved, and the scientific nature of the intelligent equipment support scheme can be improved.