bluuebunny/crossref_metadata_2025 huggingface dataset:
EFEKTIVITAS PENGGUNAAN APLIKASI PELAYANAN TERPADU SATU PINTU DALAM PENGELOLAAN SURAT MASUK DI KANTOR PENGADILAN NEGERI WONOGIRI
Authors: Sitoresmi Raras Indah , Ninghardjanti Patni , Susantiningrum Susantiningrum
Published: June 2024

This research aims to describe: (1) application usage One Stop Integrated Service (PTSP) in incoming mail-handling at Wonogiri District Court Office; (2) constraints and solutions to usage constraints PTSP application in managing incoming mail; (3) the effectiveness level of PTSP Application usage incoming mail-hanling. The method used for this research is  a mixed methodology with sequential design and case study approach. The sampling technique in this research used purpossive sampling. The validity test used are triangulation technique for qualitative data and pearson validity formula for testing quantitative data’s intrument. The result of this research shows that: (1) the use of PTSP’s application on incomig mail-handling at Wonogiri District Court only still limited for electronic’s mailing register which in first phase of mailing input to the application then proceed using manual procedure; (2) the constrain of PTSP’s application usage on mailing management is human resource which the employee as the users. The lack of motivation, the willingness and skill to change into PTSP’s application in incoming mail-handling caused the usage of the application is not optimal; (3) based on effectivity indicators there are some indicatorst that are unfullfilled which are targets, punctuality, goals, and transformation that also supported by the avarage of questionnaire result that shows number 56,67 which categorized as ineffective. There are the solutions that tried to resolve the constrain of PTSP’s application usage in incoming mail-handling are motivating, conducting socialization, and attempt from some employee to use the application to handling incoming mail.
PENGARUH KEAKTIFAN DAN FASILITAS BELAJAR TERHADAP HASIL BELAJAR SISWA KELAS XII SMK N 1 BANYUDONO 2019/2020
Authors: Royani Fahmi , Sawiji Hery , Ninghardjanti Patni
Published: June 2024

The purpose of this research was to determine:  (1) the influence of student’s activeness; (2) the influence of learning facilities on the learning outcomes; and (3) the influence of student activeness and learning facilities together toward the learning outcomes at twelveth grade of Personnel Administration subject at SMK N 1 Banyudono Academic Year 2019/2020. This research is a quantitative research with correlational method. The sample taken were 60 students, using Slovin formula, and random sampling technique. The results of the research indicate: 1) significant positive effect of student activity on student’s learning outcomes, t_count> t_table (5.303> 2,00030) significance (0,000 <0.05); 2) significant positive influence of learning facilities on student’s learning outcomes, tcount> ttable (5,071> 2,00030) significance (0,000 <0,05); 3) significant positive effect of student activeness and learning facilities together on student’s learning outcomes, evidenced by the value of Fcount> Ftable (59,209> 3.15) significance (0,000 <0.05), so Ho is rejected and Ha received; and 4) multiple linear regression equations obtained Ŷ = 30.955 + 0.199 X1 + 0.387 X2. These results indicate that the higher activeness and complete learning facilities together, the better student’s learning outcomes achieved by students at twelveth grade at SMK Negeri 1 Banyudono Academic Year 2019/2020.
PELAKSANAAN PENILAIAN AKHIR MAGANG KEPENDIDIKAN 3 FAKULTAS KEGURUAN DAN ILMU PENDIDIKAN UNIVERSITAS SEBELAS MARET SURAKARTA (Studi Kasus di SMK N 6 Surakarta Tahun Ajaran 2019/2020)
Authors: Rachmadani Firli Khoirul , Subarno Anton , Murtini Wiedy
Published: June 2024

Abstract
The Implementation Of Teaching Internship 3 Of  Teacher Taining and Education Facultyebelas Maret University (Case Study Of Final Assessment Internship Program At Vocational Senior High School 6 Surakarta 2018/2019). This research aims to find ; 1) the implementation of teaching Internship 3, 2) the Problems in the teaching internship, and 3) the way of solving  the problems of teaching internship 3 at Vocational Senior High School 6 Surakarta. This research is a qualitative research ith a case study approach. The sampling technique was purposive and snowball sampling methods, the head of the teaching internship 3 is as the key-informant. The data were collected using interview, observation, and documentation. The  validation of data was the source triangulation and method triangulation. The data were analysed using reduction, data display, and conclusion drawing/verification. The results show: 1) the implementation of the final assessment of teaching internship program was not in accodance with its  guidlines, 2) the problems of teaching internship, for instance lack of coordination between students, lecturer, UP2KTM, and high school teachers during the teaching internship program, the purpose of teaching internship was not in step with the internship guilines, the quality of instruments of the teaching internship, an inadequate assessment form, and a limited number of student who have abilities in the extracuricular field, and 3) the effort to overcoming the problems, such as increasing coordination between students, lecturers, UP2KTM, and high schools teachers, the evaluation of internship goal based on UP2KTM, evaluation of teaching intership guidlines instruments by UP2KTM, and the evaluation of assement system on extracurricular activities.
PENERAPAN E-OFFICE SIPSMART DI UNIVERSITAS SEBELAS MARET
Authors: Wijaya Daniel Indra , Ninghardjanti Patni , Susantiningrum Susantiningrum
Published: June 2024

The purpose of this study was to determine the application of the SIPSMART e-office at Sebelas Maret University. The research method used is qualitative with a case study approach. Researchers present descriptive data in the form of informants or sources, field observations. Sources of data are informants, activities or events, as well as documentation or archives. The sampling technique was carried out using purposse sampling. Researchers in this study used triangulation of sources and methods in testing the validity of research data. The data analysis technique used in this research is interactive model data analysis. The SIPSMART application is used to store student achievement data which later the output from SIPSMART can be used for students as evidence of their achievement while being a student. The implementation of the SIPSMART e-office at Sebelas Maret University Surakarta has not been perfect, it can be seen from the steps that have been done have not yet yielded maximum results. Although the implementation of SIPSMART has been carried out through the planning and implementation stages. The planning stage consists of student competence and also server creation. Meanwhile, the implementation stage of the launching activity and also socialization. The socialization activities carried out were not concurrent at all levels of students, because the socialization conducted was only a few students, so that the information conveyed did not spread, so some students, staff, and lecturers still did not understand SIPSMART.
MEKANISME PENGURUSAN SURAT MASUK DAN SURAT KELUAR DI INSTANSI PEMERINTAH
Authors: Azis Muhammad , Sawiji Hery , Indrawati Cicilia Dyah Sulistyaningrum
Published: June 2024

The objectives of this study are (1) To determine the implementation of the incoming and outgoing letters management, (2) The obstacles that occur in the implementation of the incoming and outgoing letters management, (3) the efforts made to overcome obstacles in the implementation of the incoming and outgoing letters management. This research is qualitative descriptive research with a case study approach. Sources of data used are informants, places and events, as well as archives or documents. The sampling technique used is purposive sampling and snowball sampling. Data collection techniques used are interviews, observation, and documentation. The data validity test technique used is source triangulation and method triangulation. The data analysis technique used is an interactive analysis model. The results show (1) the incoming and outgoing letters Management are including (a) Incoming Letters, (b) Outgoing Letters, (2) Obstacles in the Incoming and outgoing letters Management are (a) there is no letter expert, (b) the storage space is getting narrower, (c) the lack of employee knowledge about mail handling, (d) the Lack of attention to mail security, (3) Efforts to overcome the obstacles in the Incoming and outgoing letters management. (a) requests for the new employee recruitment of mail handling, (b) submission of new archive space, (c) cooperation between the employees and students/interns, (d) maximizing the use of e-surat and SIPP applications.
PELAKSANAAN INVENTARISASI BARANG MILIK NEGARA DI BAGIAN ASET DAN LOGISTIK UNIVERSITAS SEBELAS MARET SURAKARTA
Authors: Anugrah Destaria Bella , Dyah Cicilia , Murwaningsih Tri
Published: June 2024

This study used descriptive qualitative with a case study approach. The research was conducted at the Office of the Asset and Logistics Section of Sebelas Maret University, Surakarta. The purpose of this research is to find out the process, problems and efforts of implementing inventory of state-owned goods. Research data obtained from informants, events and documents by purposive sampling. Data collection techniques with observation, interviews and documentation. The data validity test technique was obtained by triangulation of sources and methods. The data analysis technique uses interactive model data analysis. The results showed the implementation of the inventory of state property in the Asset and Logistics Section of Sebelas Maret University Surakarta is good and in accordance with applicable laws with the following activities. The problems that arise are limited number of human resources, too much inventory of goods being carried out, the person in charge of the room and goods users do not carry out their duties, and property data countries and goods in the field are not the same. The efforts are to receiving student internships, empowering the division of labor and providing maximum teaching for interns, socialization and training of staff and carry out routine supervision of goods.
APLIKASI VIDEO CONFERENCE SEBAGAI MEDIA PEMBELAJARAN DARING MASA PANDEMI COVID-19 DI PRODI PENDIDIKAN ADMINISTRASI PERKANTORAN
Authors: Fuada Firdausa Hulif , Sawiji Hery , Winarno Winarno
Published: June 2024

This study aimed to determine the use of video conference applications as online learning media during the Covid-19 pandemic in the Office Administration Education Study Program in the Faculty of Teacher Training and Education of Sebelas Maret University, the obstacles that occurred and solutions of the problem. This study used a descriptive qualitative method with a case study approach. The data sources of this study included interviewees, locations and events, and documents.The research sampling techniques used were purposive sampling and snowball sampling techniques. Whereas the data collection techniques used were triangulation technique and interviewees triangulation. The data analysis technique used was interactive analysis according to Miles and Huberman. Based on the research results, it shows thatthe use of video conference applications as online learning media is one of the alternatives to support the online learning process during the Covid-19  equipped with the features available on the video conference applications, and those applications were easy to use and could be used to overcome the limitations in space and time between the lecturers and students. The obstacles experienced while using video conference applications as learning media are limited quotas, unstable internet connection, and an inconducive learning environment. The solutions taken to overcome the obstacles experienced are utilizing the quotas provided by the government, using a good Wi-Fi or provider in the area where each student lives, and creating a conducive learning environment while using video conference applications as online learning media during the Covid-19 pandemic these days.
Pemanfaatan teknologi informasi dan komunikasi dalam pelayanan administrasi terpadu kecamatan (PATEN) di Kecamatan Bulu
Authors: Oktadevi Erla Pratina , Subarno Anton , Winarno Winarno
Published: June 2024

Abstrak: Penelitian ini bertujuan untuk mengetahui implementasi pemanfaatan teknologi informasi dan komunikasi pada PATEN, upaya mengatasi kendala yang terjadi dan upaya pengembangan yang akan dilakukan pada PATEN. Penelitian dilakukan di Kantor Kecamatan Bulu Kabupaten Sukoharjo. Penelitian ini menggunakan metode deskriptif kualitatif dengan pendekatan studi kasus. Data diperoleh dari informan, dokumen, tempat dan peristiwa. Teknik pengambilan sampel menggunakan purposive dan snowball sampling. Penelitian ini menggunakan triangulasi sumber dan metode untuk menguji keabsahan data. Hasil penelitian ini menunjukkan bahwa penerapan teknologi informasi dan komunikasi pada PATEN di Kecamatan Bulu masih mempunyai kendala seperti pegawai yang kurang kompeten dalam mengoperasikan teknologi, kurangnya motivasi pegawai dan server yang sering error. Oleh karena itu, upaya berupa pelatihan dan pemberian reward dinilai penting sebagai kunci dalam menyelesaikan permasalahan terkait kompetensi dan motivasi pegawai serta upaya berkoordinasi dengan pengelola sistem pusat untuk mengatasi server error. Penelitian ini menyimpulkan bahwa pemanfaatan teknologi informasi dan komunikasi pada PATEN masih belum optimal.

Kata Kunci : PATEN; pemanfaatan; teknologi

Abstract: This study aims to determine the implementation of the utilization of information and communication technology in PATEN, efforts to overcome the obstacles that occur and development efforts that will be carried out on PATEN. The research was conducted at the Bulu District Office, Sukoharjo Regency. This research uses descriptive qualitative with a case study approach. Data was obtained from informants, documents, places and events. The sampling technique used purposive and snowball sampling. This study uses triangulation of sources and methods to test the validity of the data. The results of this study indicate that implementing information and communication technology in PATEN in Bulu District still has obstacles, such as employees who are less competent in operating technology, lack of employee motivation and servers that often an error. Therefore, efforts in the form of training and giving rewards are considered important as the key in solving problems related to employee competence and motivation and efforts to coordinate with the central system manager to overcome server errors. This study concludes that using information and communication technology in PATEN is still not optimal.

Keywords: technology, utilization, PATEN
Tata ruang kantor pada komisi pemilihan umum Kota Surakarta
Authors: Indriajati Ruth Dian Putri , Murtini Wiedy , Winarno Winarno
Published: June 2024

This study aimed to determine the layout of the office at KPU Kota Surakarta in relation to employee performance. This research is qualitative. Data collection techniques using interviews, observation, and documentation. Test the validity of the data using source and method triangulation. Qualitative data analysis was carried out interactively and continuously until completion. The research procedure uses problem identification, determination of research focus, data collection, data analysis, and research reports. The results showed that the office layout at the Surakarta City Election Commission Office used a mixed type of office layout. This type of office layout is in accordance with the factors that affect the office layout. Employee performance with this type of office layout remains stable because employees feel comfortable and accept existing conditions. Still, they realize that a better office layout will undoubtedly impact performance.
Pengaruh keikutsertaan dalam organisasi dan Pengalaman PKL terhadap penguasaan soft skill siswa SMKN 3 Surakarta
Authors: Arta Amarla Rachel Listi , Susantiningrum Susantiningrum , Ninghardjanti Patni
Published: June 2024

The aims of this study were: 1) to find out whether there was an effect of participation in organizational activities on the soft skill mastery of students at SMKN 3 Surakarta; 2) to find out whether there is an influence of internship programs on the soft skill mastery of students at SMKN 3 Surakarta; and 3) to find out whether there is an effect of participation in organizational activities and street vendors together on the soft skill mastery of students at SMKN 3 Surakarta. This study uses quantitative techniques and correlational methods. The population is all OTKP grade 12 students, totaling 106 students. The results show that: 1) there is a positive influence between student participation in organizational activities and the mastery of soft skills, as evidenced by t count (2.107) > t table (1.983) and a significance value of 0.038 <0.050, 2) there is a positive influence between the internship program and the mastery of soft skills, as evidenced by t count (3.774) > t table (1.983), and 3) there is simultaneously a positive influence of student participation in organizational activities and internship programs on the mastery of soft skills, as evidenced by the value of Fcount (11.661) > Ftable (3.08).
Analisis kedisiplinan siswa XII OTKP dalam proses pembelajaran daring di SMK Negeri 1 Banyudono
Authors: Wibawa Arifais Rahman Hakim , Sulistyaningrum Indrawati Cicilia Dyah , Murwaningsih Tri
Published: June 2024

This research aims to find out (1) The condition of student discipline in the online learning process of class XII OTKP, (2) Obstacles for class XII OTKP to be disciplined in the online learning process, and (3) Efforts to overcome obstacles for class XII OTKP to be disciplined in the online learning process. This form of research is qualitative, using a case study approach. The data source consists of principals, teachers, and students of Class XII OTKP, as well as documents related to the online learning process. The sampling techniques used are purposive and snowball sampling. Test the validity of the data using source triangulation and engineering triangulation. The results showed that: (1) Student discipline in the online learning process of class XII OTKP has yet to be fully enforced. (2) The obstacles that students experience to discipline in the online learning process are: a) students do not have an internet quota, b) poor internet connections, and c) an accumulated daily task load. (3) Efforts to overcome obstacles experienced by students in the form of a) providing internet and wifi quota assistance, b) finding locations around students that have better signal coverage, and c) providing task leeway to students who are constrained by quotas and poor signals
Pengaruh literasi keuangan dan lingkungan keluarga terhadap minat berwirausaha mahasiswa PAP FKIP UNS tahun 2020-2022
Authors: Rahman Zahra Nuru , Murwaningsih Tri , Ninghardjanti Patni
Published: June 2024

This research investigated the partial and simultaneous effects of financial literacy and family environment on students of office administration education UNS entrepreneurial interest. This quantitative study used the correlational method. The sampling used a proportionate stratified random sampling technique and resulted in 158 students as the sample. The data collection employed interviews and questionnaires. The data analysis used multiple linear regression and utilized IBM SPSS ver. 26.0. The results showed that: 1) there is a positive and significant effect of financial literacy on entrepreneurial interest (t 6.442 > t 1.654) with a significance value of 0,000; 2) there is a positive and significant effect of family environment on entrepreneurial interest (t 9.561 > t 1.654) with a significance value of 0,000; 3) there is a positive and significant effect on financial literacy and family environment on entrepreneurial interest (F 114.581 > F 3,05) with a significance value of 0,000. The result of this study showed the multiple significance of financial literacy and family environment towards Y was affected by 59,7% value, and the rest of 40,3% was affected by the other variables that were not explored in this study. The overall result of the analysis in this study supports the assumed hypothesis.
Pengaruh Arus Kas Bebas, Profitabilitas, dan Ukuran Perusahaan Terhadap Kebijakan Utang
Authors: Rizanti Puti Zhafira , Gurendrawati Etty , Respati Dwi Kismayanti
Published: June 2024

The Effect of Free Cash Flow, Profitability, and Company Size on Debt Policy in LQ45 Companies Listed on the Indonesia Stock Exchange (BEI) for the 2021-2023 period. This research was conducted to determine the effect of free cash flow, profitability, and company size on debt policy. This research uses LQ45 companies listed on the Indonesia Stock Exchange (BEI) for the 2021-2023 period as the population. This research method uses quantitative methods with data in the form of financila reports available IDX website. The sample was selected using purposive sampling and produced 108 observation data. The data were processed using the SPSS application and analyzed using multiple linear regression analysis. Based on the results of the analysis conducted, it can be concluded that profitability does not have a significant effect on debt policy. Meanwhile, free cash flow and company size have a significant effect on debt policy.
Integration of physics learning content in the context of automatic machine design of fish feed throwers based on solar cells arduino IOT system
Authors: Wardana Rendy Wikrama , Anggraini Yestilia , Firdaus M. Lutfi , Yanti Fitri April , Fitri Elsi Adelia
Published: June 2024

The utilization of aquaculture, especially in freshwater fish farming potential, is still not optimal. In general, fish feeding is still done manually and depends on human resources which is done simply. So an automatic fish feed thrower based on solar cells was designed to minimize the risk of delays in feeding fish. This innovation can be integrated in learning where it is adapted to physics content. This research uses a mix of methods with data collection techniques in the form of observations related to the surrounding environment and the learning process, documentation in the form of learning tools such as syllabus, lesson plans, curriculum, documentation, questionnaires, testing feed machine tools and literature studies. This research instrument is in the form of descriptive observation sheets, observation analysis sheets testing feed machine tools. Analytical techniques in this study use descriptive, qualitative and quantitative analysis techniques. The results of this research are in the form of content integration in physics learning in the context of designing a solar cell-based automatic fish feed throwing machine consisting of 6 physics contents that are adapted to the context of solar cell-based automatic fish feed throwing machines. The results of this study show that the application of the use of an automatic machine for throwing fish feed based on solar cells can be used as a source of learning, especially in physics subjects.
Unveiling the Potential of Friction Stir Welding for Seamless Metal Joining
Authors: Rahmadan Dicky Fajar , Mulyadi
Published: June 2024

Friction Stir Welding (FSW) has revolutionized metal joining in manufacturing by offering robust joints without defects. This study examines FSW using specific parameters and evaluates its impact on mechanical properties and microstructure. Through rotational speed (2192 RPM), welding speed (36.3 mm/minute), tool tilt (3.4°), and concave shoulder angle (9°), FSW was applied to predetermined metal materials. Impact and Vickers tests were conducted post-welding to assess toughness, surface hardness, and microstructural changes. Results highlight the significant influence of FSW parameters on material properties, providing insights for optimizing efficiency and quality in the manufacturing industry. The study's findings contribute to addressing knowledge gaps and advancing FSW applications in industrial settings.
Highlight:

Precise Parameters: Control for strong joints in manufacturing.
Toughness Evaluation: Assessing joint resilience under dynamic loads.
Industry Optimization: Enhancing efficiency and quality in metal joining processes.

 
Keywoard: FSW, Manufacturing, Mechanical Properties, Optimization, Impact Testing
Analysis of occupational injuries among workers in foundry workshops
Authors: Lazarenkov A. M. , Ivanov I. A. , Sadokha M. A. , Novik A. A.
Published: June 2024

The results of the analysis of occupational injuries among workers in foundry workshops with different types of production are presented. It is shown that the highest number of accidents by location occurs in the fettling‑cleaning, molding, and meltingpouring areas of foundry workshops, and the most hazardous professions are those of fettler, molder, melter, pourer, and repair fitter. An analysis of the causes of injuries in foundry workshops showed that about 76 % of cases occur due to organizational reasons, about 16 % due to technical reasons, about 6 % due to sanitary‑hygienic reasons, and about 2 % due to psychophysiological reasons. The possibility of predicting injury rates among workers in foundry workshops is demonstrated.
Analysis of structure and strength properties of heat‑resistant iron‑chromium‑nickel (Inconel 718) alloy obtained using secondary metal powder composition in direct laser deposition
Authors: Baranov D. A. , Shchedrin E. I. , Zhatkin S. S. , Nikitin K. V.
Published: June 2024

This work presents investigations on the structure, chemical analysis, and strength properties of deposited metal using two types of metal powder compositions, namely the primary powder and the residuals (secondary) of the heat‑resistant ironchromium‑nickel alloy Inconel 718.

Based on the obtained results, the causes of the formation of a fine‑cellular‑dendritic directional structure with needle and dendritic morphology were determined, as well as the decrease in heat resistance of the deposited material from the secondary powder of the heat‑resistant iron‑chromium‑nickel alloy Inconel 718 at elevated temperatures.
Research on technological parameters affecting the quality of adhesive joints in casting model assemblies and assessment of their operational properties in liquid and humid environments
Authors: Kalinichenko M. L. , Nemenenok B. M.
Published: June 2024

Modern casting model kits, often created using adhesive technologies, can experience deformations leading to warping and even destruction. This can occur due to differences in thermal expansion and moisture absorption rates between the material and the adhesive. The study evaluated the behavior of the adhesive joint in model kit elements under operational conditions in liquid and humid environments, assessing the hardness and strength of the joint. The analysis revealed a correlation between the density of the plastic and the quality of the adhesive joint.
Metal-Based Implants: Review of Materials and Designs
Authors: Korolyov A. Yu.
Published: June 2024

The purpose of implants is to replace, restore, maintain or improve the functionality of various tissues and organs of the human body. Their use in modern medicine has significantly improved treatment methods and increased the quality and life expectancy of patients. The most preferable from the point of view of the possibility of imparting the required mechanical properties, the relatively low cost of the material and low production costs are metal implants. Metals and their alloys in the production of implants are superior to ceramic and polymer materials in a range of properties such as tensile strength, endurance limit, wear resistance, hardness, elasticity, viscosity, shape memory effect. The paper provides an overview of the designs of modern implants for various purposes and the metal materials used for their production. An analysis of literature sources has shown that modern implants made of metal materials represent a wide range and have significant differences in shape and size. Some of them are characterized by a small cross-section and rigidity, while possessing elastic properties. Other products are load-bearing, in some cases massive, structures. According to the proposed classification, according to their purpose, metal implants are divided into: dental, cranial, maxillofacial, vertebral, traumatological, cardiovascular and joint endoprostheses. An analysis of the advantages and disadvantages of the main metal materials used in the production of implants (corrosion-resistant steel, titanium and titanium alloys, cobalt-chromium alloys and nitinol) has been performed. It has been established that all currently used biocompatible metal materials are not completely inert towards the body. Each material in any case causes some reaction in the surrounding tissues. The greatest biocompatibility and corrosion resistance in the body is provided by technical titanium, which, however, has low strength characteristics.
Local Heating System to Improve Comfort of Spectators in the Stands of Indoor Ice Skating Rink
Authors: Livanskiy D. G.
Published: June 2024

This paper discusses examples of the use of local heating systems that improve the comfort conditions of spectators, necessary for a full-fledged perception of events at an indoor ice rink. Indoor ice rinks are popular venues for sporting events, concerts and other entertainment events. However, spectators in the stands of indoor ice rinks during a hockey match or a performance of figure skaters often face the problem of low temperature, which, on the one hand, is necessary to maintain high ice quality, but on the other hand,  can be uncomfortable with prolonged stay of the audience. The paper exa-mines the features of heat and mass transfer processes on indoor ice rinks, including convective and radiation heat exchange with the ice surface and the influence of the configuration of ventilation systems on the air environment inside the arena. The study on the need for mathematical modeling for a deeper understanding of the physical processes occurring inside indoor ice rinks. To study the operation of local heating systems, a numerical solution of a system of differential equations is used that describes the processes of heat and mass transfer in the air space of an indoor ice rink. The paper discusses several technical solutions for the organization of local heating systems. The advantages and disadvantages of the above technical solutions are highlighted. A comprehensive analysis of the operation of local heating systems at an indoor ice rink is an important contribution to the understanding the physical processes and parameters that affect the microclimate inside indoor ice rinks, and can also serve as the basis for optimizing such systems in order to ensure comfortable conditions for spectators.
Planning of Production Capacities of Precast Construction Plants under Conditions of Changes in Demand for Products
Authors: Gurinovich V. Yu. , Pozdnyakov D. A. , Yukhnevskiy P. I.
Published: June 2024

The main criterion for a feasibility study of the production efficiency of precast construction plants, analysis of internal production reserves and optimal production volume is the production capacity indicator. Thus, the study of various Factors influencing the production capacity indicators is an important task. The results of research of the influence of the number of storeys and the set of block sections in the configuration of industrial residential buildings on changes in the ratio of product types in the range of the production programme of plants are presented in the paper. Fluctuations in the ratio of product types during the construction of different types of houses have been established.  Based on the obtained results, the dependence of the production capacity plants on fluctuations in the ratio of product types has been constructed. It has been determined that the main reason for the revealed facts of a decrease in production capacity is the uneven loading of production lines with fluctuations in the ratio of product types in the range of production programs of precast construction plants. Taking into account the known facts of  the dependence of production capacity on the concrete capacity of block sections of houses, the results of a comparison of the degree of influence of concrete capacity on the production capacity and the ratio of the main types of products in the range of production programs of plants are presented in the paper. It has been established that a key influence on the indicators of production capacity is exerted by  changes in the ratio of product types. On the basis of the conducted research, optimal reserves of production capacity have been determined with a high share of different types of houses in the production programs of the plants. Taking into account the established indicators of production capacity reduction, their optimal reservation is within 20–25 % of the design capacity of the plants, which should serve as a reference point when planning the functioning of the production management system under the conditions of changes in demand for products.
Virus-like particle (VLP)-based vaccine targeting tau phosphorylated at Ser396/Ser404 (PHF1) site outperforms phosphorylated S199/S202 (AT8) site in reducing tau pathology and restoring cognitive deficits in the rTg4510 mouse model of tauopathy
Authors: Bhaskar Kiran , Hulse Jonathan , Maphis Nicole , Peabody Julianne , Chackerian Bryce
Published: June 2024

Tauopathies, including Alzheimer’s disease (AD) and Frontotemporal Dementia (FTD), are histopathologically defined by the aggregation of hyperphosphorylated pathological tau (pTau) as neurofibrillary tangles in the brain. Site-specific phosphorylation of tau occurs early in the disease process and correlates with progressive cognitive decline, thus serving as targetable pathological epitopes for immunotherapeutic development. Previously, we developed a vaccine (Qβ-pT181) displaying phosphorylated Thr181 tau peptides on the surface of a Qβ bacteriophage virus-like particle (VLP) that induced robust antibody responses, cleared pathological tau, and rescued memory deficits in a transgenic mouse model of tauopathy. Here we report the characterization and comparison of two additional Qβ VLP-based vaccines targeting the dual phosphorylation sites Ser199/Ser202 (Qβ-AT8) and Ser396/Ser404 (Qβ-PHF1). Both Qβ-AT8 and Qβ-PHF1 vaccines elicited high-titer antibody responses against their pTau epitopes. However, only Qβ-PHF1 rescued cognitive deficits, reduced soluble and insoluble pathological tau, and reactive microgliosis in a 4-month rTg4510 model of FTD. Both sera from Qβ-AT8 and Qβ-PHF1 vaccinated mice were specifically reactive to tau pathology in human AD post-mortem brain sections. These studies further support the use of VLP-based immunotherapies to target pTau in AD and related tauopathies and provide potential insight into the clinical efficacy of various pTau epitopes in the development of immunotherapeutics.
Quantitative assessment of compound flood disaster in the Xijiang River Basin, considering univariate and multivariate with intra-correlation
Authors: Zhao Yinmao , Dong Ningpeng , Xu Kui , Wang Hao
Published: June 2024

Changing climatic conditions have escalated the risk of compound disaster, and there remains a scarcity of quantitative research at river basin scale. An integrated research framework is proposed in this study to quantitatively analyze and assess the risk of future compound flood in Xijiang River Basin based on external driving factor and internal variables. Under this framework, a multi-model ensemble of 10 preferred CMIP6 GCMs is carried out based on statistical downscaling and Bayesian weighted average method, and the multi-scale variation characteristics of precipitation and runoff during 2020 ~ 2099 are analyzed based on the ensemble data. Combined with univariate and multivariate trend analysis considering intra-correlation, the multi-class copula functions are utilized to estimate the joint probability and return period of compound flood. The results show that: 1) The precipitation and runoff increase by 8.25%, 14.5%, and 34.05%, 55.18% respectively compare to the baseline period under SSP2-4.5 and SSP5-8.5, with both displaying an increasing trend at rates of 1.03%/10a, 2.66%/10a, and 2.74%/10a, 4.62%/10a on the interdecadal scale under the two scenarios, respectively. 2) The internal variables of the compound flood represented by the annual maximum peak flow (AMPF) and the annual consecutive maximum 7-day flood volume (AM7dFV) present a significant increasing trend under the two scenarios, but the annual maximum precipitation (AMPre) of the external driving factor does not show a significant trend while the annual total precipitation (ATPre) of the external driving factor increases significantly under both scenarios. It is noteworthy that both the internal variables and the external driving factors of compound flood show significant increases in the multivariate analysis. 3) The joint variable of compound flood demonstrates a substantially increasing trend under both scenarios, along with an increase in the magnitude of the once-in-a-century flood. Discounting the intra-correlation between multivariate, the degree of disaster would be underestimated.
Mauritia flexuosa L.f. (Buriti) Forest Description: Hydro-edaphic Effects on Tree Species Distribution in Western Amazon
Authors: Ribeiro Karoline A.F. , Reis Leonardo P. , Assis Pâmella L.S. , Castro Mário J.L. , Nascimento Paulo J.F.P. , Naissinger Bruna M. , Souza Gabriela O. , Gris Darlene
Published: June 2024

This study addresses the lack of knowledge about the Buritizais of the Western Brazilian Amazon, trying to fill important gaps for the conservation and management of these unique ecosystems. The study was conducted in the Javari-Buriti Area of Relevant Ecological Interest, with the aim of characterizing the forest communities in different phytophysiognomies, identifying species distribution patterns and the factors that influence the abundance of Mauritia flexuosa L.f. A floristic inventory was carried out in areas of várzea alta (T1), várzea alta with transition to buritizal (T2) and buritizal (T3). Phytosociological analysis was carried out and environmental variables (soil and flooding) were related to vegetation composition using statistical tests and Canonical Correspondence Analysis (CCA). 112 species were recorded and there was a significant variation in richness between areas, with T2 having the highest number (84 species) and T3 (Buritizal) the lowest (28 species). The CCA showed an association between floristic composition and environmental characteristics, especially organic matter. The regression tree showed a preference of M. flexuosa for areas with high organic matter and phosphorus. Ordination revealed a clear differentiation in floristic composition between the areas of várzea alta and buritizal, with the marked presence of species such as M. flexuosa and Chromolucuma rubriflora in the buritizal, correlated positively with organic matter and negatively with copper and aluminum. Our results highlight the influence of environmental conditions on the distribution of plant species in the ARIE Javari-Buriti. Understanding these interactions is crucial for guiding conservation and sustainable management strategies in the Amazon.
Mangrove tree aerial root extract mediated green synthesis of Ag/Fe3O4/GO nanocomposite and its application as a catalyst for one pot synthesis of 7-phenyl-6H,7H-benzo[4,5]imidazo[2,1-b]chromeno[4,3-d][1,3]thiazin-6-one derivatives
Authors: Parthiban Devendiran , Kuppusamy Muniyan Ramasamy , Vanitha Chinnaswamy , Gomathi Ayyanan , Suraksha Dhanasekaran
Published: June 2024

This research dealt with preparation of magnetically separable Ag/Fe3O4/rGO nanocomposite through green method using Mangrove tree aerial root extract as a stabilising agent. The morphology, size, chemical composition, magnetic property and other characteristic parameters of synthesized Ag/Fe3O4/GO nanocomposite were determined by analytical techniques like FT-IR, XRD, EDX and SEM. The results proved that the Mangrove tree aerial root extract has the ability of reduction of Ag+ ions and graphene oxide (GO) to Ag nanoparticles and reduced graphene oxide (rGO), respectively. The prepared Ag/Fe3O4/rGO nanocomposite is used successfully as a prompt catalyst for synthesis of 7-phenyl-6H,7H-benzo[4,5]imidazo[2,1-b]chromeno[4,3-d][1,3]thiazin-6-one derivatives by one-pot multicomponent reaction of hydroxycoumarin (10 mmol), mercaptobenzimidazole (10 mmol) and different aldehyde (10 mmol) in the presence of ethanol (10 ml) as an eco-benign solvent at reflux condition. By utilising this protocol, we have constructed 7-phenyl-6H,7H-benzo[4,5]imidazo[2,1-b]chromeno[4,3-d][1,3]thiazin-6-one derivatives in good to excellent yield of 80-90%. This synthesis involves formation for C-C, C-N, C-S bond. The synthesized organic heterocyclic compounds were examined for the green matrix properties such as atom economy (AE), E-factor and product mass intensity (PMI). This green protocol is of big interest due to employing simple, non-toxic heterogeneous, separable, reusable Ag/Fe3O4/GO as an eco-safe heterogenous catalyst and environmentally benign ethanol as a green solvent without the use of any harmful mineral acid and toxic transition metal catalyst.
Community Health Services in Pabna, Bangladesh: Assessing Effectiveness and SDG Contributions
Authors: Zaman Md. Atiq , Siddique Rafi Hasan
Published: June 2024

Achieving the United Nations Sustainable Development Goals (SDGs) requires strengthening community health systems, especially in resource-limited settings. This study evaluates the effectiveness and availability of community health services in Pabna Sadar Upazila, a sub-district in northwest Bangladesh, and analyzes their contributions toward select SDG targets. Using mixed methods including a population-based survey (n=625 households), in-depth interviews with health workers (n=15) and district managers (n=5), and direct observation of community clinics (n=12), we assess service utilization, population coverage, quality of care, and alignment with SDG 3 (Good Health and Well-Being). The study finds relatively high utilization of services targeting maternal and child health, but limited provision of services addressing non-communicable diseases and the needs of the rapidly growing elderly population. Significant inequities exist in service access and quality between urban and rural areas. While making important contributions to SDG targets 3.1 (maternal mortality), 3.2 (neonatal/child mortality) and 3.7 (sexual/reproductive health services), existing community health services only partially support other critical SDG 3 targets. We identify key health systems constraints as well as promising strategies to strengthen community-based health service delivery as a pathway for further progress on the SDGs in Bangladesh and other low-income countries.
Vem++, a c++ library to handle and play with the Virtual Element Method
Authors: Dassi Franco
Published: June 2024

The Virtual Element Method (VEM) is an extension of the Finite Element Method (FEM) to handle polytopal meshes. After giving a short introduction of the VEM for a two dimensional Laplacian problem, we show the differences between an implementation of a VEM and a FEM code highlighting which are the main issues associated with the VEM framework. Furthermore, this paper will show one of the possible ways to face such issues: Vem++ a c++ library developed to “deal and play” with the VEM discretisation. This c++ library deals with the VEM, since there are several partial differential equations in two/three dimensions coming from both academic and engineering problems. Then, one can “play” with the VEM, since Vem++ has been designed so that one can plug-in new features such as new polytopes quadrature rules, new solvers and new virtual element spaces in a smart way.
A Case of Adnexal Cutaneous Leishmaniasis in Washington DC
Authors: Akosman Sinan , Song Heeyah , Sheils Paul , Mansour Tamer , Wroblewski Keith J , Rajjoub Lamise
Published: June 2024

Purpose
To report a rare non-endemic case of Leishmania aethiopica in Washington DC.
Case report
A 68-year-old female presented for a routine examination with a complaint of right upper eyelid lesions for the past 5 months. On examination, a cluster of elevated and erythematous lesions extending from the medial canthus to the brow area of the right eye were seen. Initial treatment with Valtrex based on a suspected viral etiology failed. Although a biopsy was recommended at this time, the patient declined, and subsequent workup included nasolacrimal duct irrigation, blood work to rule out autoimmune etiology, a course of doxycycline, and an MRI, which yielded no improvement. Upon progression of the lesions into persistent plaques on the eyelids, a punch biopsy was performed, confirming leishmaniasis. The patient was then started on a 28-day course of oral miltefosine which led to complete resolution of her symptoms.
Conclusion
This case underlines the importance of a broad differential including non-endemic diseases, particularly in urban areas with frequent patient travel. Furthermore, the delayed punch biopsy in this case highlights the importance of patient counseling to ensure prompt diagnosis and treatment.
Intraspinal pressure is not elevated after traumatic spinal cord injury in a porcine model sham-controlled trial.
Authors: Thygesen Mathias Møller Møller , Entezari Seyar , Houlind Nanna Kaae , Nielsen Teresa Haugaard , Olsen Nicholas Østergaard , Nielsen Tim Damgaard , Skov Mathias , Tankisi Alp , Rasmussen Mads , Einarsson Halldór Bjarki , Orlowski Dariusz , Dyrskog Stig , Thorup Line , Pedersen Michael , Rasmussen Mikkel Mylius
Published: June 2024

Introduction
It has been suggested that intraspinal pressure (ISP) below the dura is elevated following traumatic spinal cord injury (TSCI). The dura can maintain the pressure, a hence a subdural compartment syndrome has been hypothesized to develop regardless of bony decompression.
This study aimed to evaluate whether a such intradural compartment syndrome develops during the first 72 hours in a porcine TSCI model.
Methods
First, in a randomized sham controlled-trial design, longitudinal ISP measurements were performed over a period of 72 h from onset of TSCI. TSCI was inflicted by a weight-drop contusion regime: 75 g rod, 75 mm free fall, 5 min compression of the spinal cord. Second, in a sham controlled dose-response design longitudinal ISP measurements were performed over a period of 16 h from onset of TSCI, using two other contusion regimes: 75 g, 125 mm free fall, 5 min compression; and 75 g, 75 mm, 240 min compression. Animals were kept sedated for the entire course of the study using propofol, fentanyl and midazolam.
Results
ISP increased in TSCI and sham animals alike, but we found no significant increase in ISP following TSCI compared to the sham group, and we found no relationship between the ISP increase and the severity or duration of the TSCI impact.
Conclusion
These findings suggest that the subdural swelling of the spinal cord following TSCI is not responsible for the ISP increase measured in our TSCI model, but that the ISP increase was caused by the surgical procedure or the reconstitution of normal CSF pressure.