bluuebunny/crossref_metadata_2025 huggingface dataset:
Assembling with VR
Authors: Thomas Lisa , Watson Debbie , Peach Lois , Ross Nina , Clarke Naomi
Published: April 2024

In this paper, we consider the claims that constellate around the concepts of immersion, presence and empathy that have been made about virtual reality across many disciplines of study, including psychology, criminology, immersive film and media. These claims are applied to an interdisciplinary, collaborative project: VR Dance; which engaged young people (11-16 years) in hip hop and immersive technology workshops over a six-week period. We discuss the ways in which co-created immersive environments which centre the body offer potential to tune into and re-calibrate our sensitivities and modes of engagement with each other and the environments we are in. We argue that this is not simply as a result of technology’s effects on individuals but constituted in wider assemblages of human and nonhuman actors.  We make the case for virtual reality, not as a tool for ‘becoming other’, but as part of wider assemblages in ongoing transformations, relocations, and calibrations.
Funding Acknowledgement
VR Dance is an East London Dance programme, funded by the Mayor of London’s Young Londoner’s Fund & the London Borough of Redbridge and delivered in partnership with the University of Bristol, BirdGang Ltd, Maskomi and PlayLa.bZ.
Critical Reflections on Universities, Publishing, and the Early Career Experience
Authors: Vickery Jonathan
Published: April 2024

This paper is a critical reflection on the changing relationship between university institutions, academic publishing, and young researchers. It emerges from a current project in assessing the role and development of Warwick University’s research journals (and their editors), but also takes into account two recent Warwick Institute of Advanced Study seminars discussing the practical and strategic challenge of publishing for early career scholars and PhD students. While these seminars concerned publishing in general, and the question of career trajectories, this reflection paper takes into account the current shifts in publishing and our understanding of research as knowledge production more broadly. This reflection maintains that, in part provoked by digital media, the status of research knowledge vis-à-vis its traditional presentation in the discrete products of the ‘article’, and the book, has become unstable, and this instability has opened up a range of economic and systemic conditions of knowledge production that have long since been concealed. Current shifts thus offer younger scholars and early career researchers significant opportunities: this short paper sets out the initial framework for a current research project focussing on university publishing, then it refers to the two above seminars in order to conclude with some critical issues for academic practice, research and for early career scholars.
Exchanges Discourse Podcast
Being an Effective Academic Citizen in the Republic of Knowledge: In Conversation with Jonathan Vickery [59:58]
Five Minutes to Midnight
Authors: Johnson Gareth J
Published: April 2024

This is the editorial for the 27th issue of Exchanges. The editorial offers an update to journal activities, along with an introduction to the issue’s content, alongside highlighting ways in which people can interact and contribute to future issues. The major focus of the editorial is an overview of the various special issue projects currently underway for future publication consideration. The article also includes information on the Editorial Board and ways to contact the Editor-in-Chief.
تمكين الموارد البشرية وعلاقته بالإنجاز والابتكار لدى موظفي قطاع الضيافة
Authors: النفيعي سعود حمود , البيحاني نعيم بن علي
Published: April 2024

الأهداف: يركز البحث الحالي على دراسة العلاقة الارتباطية بين التمكين والانجاز والابتكار وأثر التمكين بدافعية الإنجاز والابتكار، تساهم هذه الدراسة في زيادة دوافع الموظفين للإنجاز والابتكار عن طريق تفويض الموظفين ببعض الصلاحيات وتمكينهم لاتخاذ القرارات والمساهمة في وضع بعض الأهداف التشغيلية والاستراتيجية، يفترض هذا البحث أن هناك تطورًا كبيرًا في قطاع الضيافة في المملكة العربية السعودية في ظل رؤية (2030). المنهجية: لتحقيق أهداف الدراسة استخدم الباحثان المنهج الوصفي التحليلي وتم تطبيقها على عينة مكونة من (146) من موظفي قطاع الضيافة في منطقة مكة المكرمة. النتائج: تظهر نتائج تحليل بيانات الدراسة إلى وجود علاقة ارتباطية موجبة دالة إحصائيًا عند مستوى دلالة (ألفا أقل أو يساوي من 0.05) بين مستوى التمكين ومستوى الإنجاز لدى موظفي قطاع الضيافة في منطقة مكــة المكرمـة، وبين مستوى التمكين ومستوى الابتكار لدى موظفي قطاع الضيافة في منطقة مكــة المكرمـة. الخلاصة: استنادًا إلى هذه النتائج؛ خلّصت الدراسة إلى أن تمكين الموارد البشرية يساعد المنظمات والشركات على تعزيز ولاء الموظفين وانتمائهم إليها مما يساعد في زيادة الرضا الوظيفي لدى الموظفين عند اعطائهم قيمة أكبر من قبل مدراءهم ومساهمتهم في اتخاذ القرارات سواءً كانت قرارات يومية لعمليات التشغيل أو القرارات الاستراتيجية.
الحوافز وأثرها لتحقيق الرضا الوظيفي وتحسين أداء الموظفين (دراسة حالة في جامعة أم درمان الأهلية-السودان)
Authors: الطاهر عمر علي بابكر
Published: April 2024

الأهداف: هدفت هذه الدراسة إلى معرفة أثر الحوافز المالية والحوافز المعنوية على رضا وأداء العاملين في جامعة امدرمان الأهلية- السودان وكذلك تقديم مقترحات تساعد في زيادة فعالية نظام الحوافز المطبق في الجامعة لتحقيق الرضا وتحسين الأداء للعاملين. المنهجية: استخدمت الدراسة المنهج الوصفي التحليلي، واستخدم الباحث طريقة العينة العشوائية حيث أن مجتمع الدراسة يشمل 89 عاملًا إداريًا بالجامعة وقد شملت عينة الدراسة 50 من العاملين في جامعة امدرمان الأهلية، واعتمدت الدراسة على الاستبانة كأداة للدراسة. النتائج: توصلت الدراسة إلى مجموعة من النتائج من بينها أنه توجد علاقة تأثير ذات دلالة إحصائية بين الحوافز المالية والحوافز المعنوية وتحسين أداء العاملين في جامعة امدرمان الأهلية وتحقيق الرضا الوظيفي بمعني كلما زادت الحوافز المالية تحقق الرضا للموظفين العاملين في الجامعة، وكلما زاد رضا الموظف أدى ذلك لتحسين أدائه الوظيفي. كذلك أظهرت نتائج الدراسة في أنه لا توجد فروق ذات دلالة احصائية بين المتغير التابع (أداء العاملين في الجامعة) لأفراد العينة المبحوث في الجامعة بحسب الجنس والعمر وسنوات الخبرة والمؤهل العلمي. الخلاصة: أن الحوافز المادية والمعنوية لها تأثير على تحسين الأداء الوظيفي للعاملين في الجامعة، وينعكس ذلك على رضا العاملين وبالتالي سيكون لديهم دافع وحرص عالٍ على أدائهم في عملهم مما يساهم بشكل كبير على تحقيق النتائج المطلوبة بنجاح، حيث أن الأداء يمثل أحد العوامل المهمة في تقدير كفاءة العاملين بالجامعة.
أثر الرشاقة الاستراتيجية في تحقيق الميزة التنافسية (دراسة تطبيقية بجامعة الملك خالد)
Authors: العلي تهاني سالم علي
Published: April 2024

الأهداف: هدفت هذه الدراسة إلى التعرف على أثر الرشاقة الاستراتيجية في تحقيق الميزة التنافسية بجامعة الملك خالد في المملكة العربية السعودية. المنهجية: اعتمدت الباحثة على المنهج الوصفي التحليلي. استخدمت الباحثة أسلوب الحصر الشامل، وقد تم توزيع الاستبانات على مجتمع الدراسة والذي يبلغ عددهم (146) موظفًا وموظفة في قسم الموارد البشرية بجامعة الملك خالد، وقد بلغ عدد الاستبانات الصالحة للتحليل الإحصائي (105) استبانة. النتائج: توصلت الدراسة إلى العديد من النتائج من أهمها: وجود تأثير إيجابي للرشاقة الاستراتيجية في تحقيق الميزة التنافسية وأن مستوى الرشاقة الاستراتيجية جاء بدرجة عالية وأن مستوى الميزة التنافسية جاء بدرجة عالية. الخلاصة: أوصت الباحثة بضرورة بتصميم برنامج يكشف مستوى الخبرات والمهارات لدى الموظفين في شتى مجالات العمل بالجامعة، حتى يتسنى لها معرفة شرائج الموظفين الذين يحتاجون إلى مزيد من الدورات لصقل مهاراتهم وخبراتهم.
Bye-Bye Dementia: Prevent dementia in the elderly with brain gym
Authors: Anggraini Nourmayansa Vidya , Ratnawati Diah , Ritanti Ritanti , Adyani Sang Ayu Made , Wahyudi Chandra Tri , Nirmala Nirmala , Wisudawati Sulistya Nur’aeni , Shahidda Nadia , Aprilia Farah
Published: April 2024

Elderly individuals often encounter various health issues, including mental and psychological decline such as dementia. One solution to address this is through brain gym therapy. The aim of this community service is to enhance the knowledge of the elderly regarding dementia, improve their ability to perform brain gym exercises, and observe the effects on their blood pressure levels. Counseling and interventions were conducted with 25 participants aged over 45 years residing in RT 03/RW 05, Limo Village, Depok. Educational methods included lectures, distribution of educational leaflets, and demonstrations of brain gym. This service successfully increased the elderly's knowledge about dementia, with the majority scoring between 51-100, comprising 14 individuals (56%). Additionally, there was a decrease in the average systolic and diastolic blood pressure levels.
Empowering sagon MSMEs through e-commerce education to support tourism in Magelang
Authors: Hidayatulloh Nur , Styarini Nurma , Yunian Resti , Pangestu Indra Bayu , Rosyada Nur Muhammad , Purnomo Bagiyo Condro , Munahar Suroto
Published: April 2024

Culinary tourism serves as a strategic approach for the development of tourism in Magelang Regency, contributing to the realization of sustainable tourism. The growth of Micro, Small, and Medium Enterprises (MSMEs) is intertwined with the progress of the tourism industry in Magelang, emphasizing the crucial role of MSMEs in utilizing online media for effective promotion and product sales. This communtiny service aims to empower the Sagon Mbah Moel traditional food situated in Mantenan hamlet, Mertoyudan, Magelang, facilitating an increase in sales and promotion through digital marketing. The implementation method for this service activity is structured in two phases: preparation and execution. The service spanned approximately two months, with a primary focus on digital marketing training and the development of appealing product packaging. The outcomes include enhanced capacity and quality for Sagon Mbah Moel MSMEs. The positive impact of this service activity is evident in the initiation of product promotions and sales through digital marketing channels, as well as the improvement of product packaging and the maintenance of several production equipment.
Efforts to reduce the number of job seekers through entrepreneurship workshops and training on the production of tilapia fish crackers
Authors: Yaumi Sri , Purwanti Ika , Hakim Mesra Berlyn , Rahmawati Norma Anggraini , Finaya Jihan , Nizam Fiki Fahrur , Anggraini Putri Ayu Nor , Majid Abdul
Published: April 2024

The majority of Ngujungrejo residents earn their livelihoods through farming, primarily producing rice and various types of fish. They typically sell the fish fresh at nearby markets. However, they encounter challenges during periods of abundant harvests, as oversupply leads to price drops and the risk of fish spoilage, especially tilapia. Additionally, there has been a rise in the number of job seekers over the past three years. The goal of this initiative is to enhance residents' entrepreneurial skills and understanding while improving their ability to process harvests into higher-value products. Methods employed include surveys, entrepreneurship workshops, training sessions on producing tilapia fish crackers, and evaluation. The outcome of this effort has been a 60% increase in knowledge and understanding of entrepreneurship and a 75% improvement in skills related to tilapia fish production. This growth is anticipated to empower participants to establish home-based industries, consequently reducing the number of job seekers in the area.
Optimizing tourism potential and community empowerment in Krambilsawit Village, Gunung Kidul
Authors: Haryanto Eko , Masjhoer Jussac Maulana , Mazaya Amalia Febryane Adhani , Suwandojo Dodik Prakoso Eko Hery , Raharjo Suwanto , Waluyo Joko , Kristiyana Samuel
Published: April 2024

Krambilsawit Village is one of the villages in Saptosari District, Gunung Kidul, categorized as extremely poor despite its tourism potential. Additionally, issues with accessibility, water resources, and electricity render Kambilsawit Village disadvantaged. The aim of this community service is to enhance the capacity of human resources in Kambilsawit Village while implementing appropriate technology to develop local tourism potential. The service took place at the Bedalo Hamlet Hall on Sunday, November 5, 2023, with 15 members of the Pokdarwis Karya Samudra participating in the training. Implementation methods included socialization, training, and counseling on tourism management and awareness, as well as assistance in implementing appropriate technology (TTG). Participants demonstrated high enthusiasm, stating that the activity was highly beneficial and helped broaden their perspectives. The TTG application, comprising a gazebo constructed from natural materials, solar panels, quisdisc, and social media for local tourism development, addressed local issues such as electricity availability, tourism management, and visitor influx, achieving a 100% success rate.
Spiritual parenting for the community of Tanjung Dayang Selatan Village, Ogan Ilir Regency
Authors: Yulasteriyani Yulasteriyani , Randi Randi , Malinda Febrimarani , Putri Cynthia Azhara , Sartika Diana Dewi , Isyanawulan Gita , Yusnaini Yusnaini , Hapsari Dyah
Published: April 2024

The laws on child protection and the national education system outline the roles and responsibilities of parents towards their children. However, the reality in Indonesia, particularly in rural areas, reveals that many parents still neglect their children's education and spiritual development, leading to high rates of school dropout and moral decline among children. The objective of community service program is to impart an understanding of Islamic spiritual parenting concepts to the target audience, enabling its application within the community. This community service initiative comprises three main agendas: pre-test, socialization or counseling sessions on family sociology and spiritual parenting, and post-test evaluations. The results of the activity demonstrated a 33% increase in participants' knowledge after engaging in spiritual parenting discussions.
Playing the self-adventure board game to increase adolescents' self-esteem
Authors: Desi Desi , De Fretes Fiane , Rayanti Rosiana Eva , Raswandaru Marsela Riska
Published: April 2024

Competition in the field of education to become excellent, accredited, and favored has an impact on students. Indirectly, to maintain their ranking status, schools generally design various dense academic and non-academic programs, requiring students to give special attention and energy. On the other hand, parents nowadays also tend to have a competitive spirit burdened on their children. One age group particularly susceptible to this situation is teenagers. Exposure to pressure inversely proportional to students' abilities will result in them experiencing low self-esteem (LSE), which if left unaddressed, can lead to depressive and even suicidal conditions. To address LSE, a therapy called "self-adventure" board game therapy is established. This community service activity aims to improve the self-esteem of students at Satya Wacana Christian High School in Salatiga. Therapy is conducted on 57 students who are indicated to have LSE through scoring on the Rosenberg Self-Esteem Scale (RSES) questionnaire. Therapy is conducted in four sessions with a group system. At the end of the sessions, all participants entered the category of high self-esteem scores. This means that playing the self-adventure game is an effective medium for resolving LSE issues.
Improving students' literacy and numeracy skills at Sekolah Dasar Negeri 1 Liabuku, Baubau City
Authors: Rimayasi Rimayasi , Sari Eka Rosmita , Nurmawati Nurmawati
Published: April 2024

This community service activity is based on the low numeracy and literacy skills of students at SD Negeri 1 Liabuku, Baubau City. The aim of this service is to explore and enhance students' literacy and numeracy skills. The participants in this PKM activity were students from SD Negeri 1 Liabuku, Baubau City. This service activity takes the form of tutoring, which aims to improve and familiarize children with literacy and numeracy. The activity is implemented in three stages: the planning stage, implementation stage, and evaluation stage. The result of this service is a comprehensive and structured numeracy and literacy program at SD Negeri 1 Liabuku, Baubau City. The implementation of the program is aligned with three stages: habituation, development, and learning. Using a learning-through-play model and learning media, students' numeracy and literacy skills both inside and outside the classroom can significantly influence the development of their respective talents and skills.
Education on acne and cosmetic knowledge for adolescents at SMK Rise Kedawung
Authors: Hidayati Nur Rahmi , Indriaty Sulistiorini , Bachtiar Arsyad , Annisah Choirun , Suciyanti Alya , Rahmatillah Hilma Aynun
Published: April 2024

Acne occurs due to the presence of S. Aureus bacteria, when the oil glands in the skin are too active, acne usually appears on the surface of the skin of the face, neck, chest, and back. Therefore, antibacterials are needed to overcome this, which can be obtained from chemicals or traditional plants. The aim of this community service program is to provide education to students at Rise Kedawung Vocational School about acne on teenage skin and training to check cosmetics registration using the BPOM Mobile application. This activity is carried out by providing material about acne starting from understanding acne, the causes of acne, traditional plants that have antibacterial activity, chemicals that have antibacterial activity, and how to check BPOM registration. The pre-test and post-test results showed an increase in participants' understanding regarding acne, acne medication, and checking cosmetic registration from 87% to 96%.
Introduction of construction planning with building information modeling (BIM) technology systems at SMK 26 Jakarta
Authors: Moengin Parwadi , Prasetyo Ryan Faza , Sejati Wahyu , Sari Feby Kartika , Bekti Dhanu Setyo
Published: April 2024

The construction industry is undergoing significant transformation in the era of globalization and technological advancements, particularly with the implementation of Building Information Modeling (BIM) systems. Accelerating the implementation of BIM in Indonesia requires collaboration among various parties, including academia, practitioners, and institutions. Therefore, it is crucial for students to learn about BIM to prepare a competent and adaptable workforce for the future development of construction technology. The aim of this activity is to enhance understanding of the importance of introducing construction planning with BIM technology systems to students at SMK Negeri 26 Jakarta, in preparation for them to become ready-to-use workforce in the construction industry, which is increasingly oriented towards information technology. The implementation method involves delivering material sessions followed by questionnaire sessions to assess the level of understanding among students. The results of this activity indicate that 26 students (53.1%) are very proficient in this subject, 19 students (38.8%) are categorized as proficient, and 4 students (8.2%) are categorized as adequately proficient.
Surveyor and dasawisma training in housing database collection in Kampung Rawa Village
Authors: Sejati Wahyu , Prasetyo Ryan Faza , Kuswanda Giraldi Fardiaz , Pusoko Avelina Nathania Bennediktus Suhardjo , Wijayanti Yureana , Wulandari Sri
Published: April 2024

The Kampung Rawa sub-district is part of an initiative aimed at enhancing the quality of settlements by structuring integrated residential areas. It is known as one of the most densely populated sub-districts, with a population density of 68,956.67 people/km2. The surveyor and Dasawisma training program aims to equip participants with knowledge on collecting data about backlogs and uninhabitable houses (RTLH) based on building reliability, thereby minimizing errors during implementation. Data collection involves visiting residents' homes to assess building conditions and completing a form integrated with the Jakarta Satu website. The outcome of this training is an improvement in the knowledge and skills of surveyors and Dasawisma in conducting backlog and building reliability surveys in the field. The training also resulted in the development of a module as a reference guide for surveyors in assessing building reliability.
Enhancing media literacy to prevent violence against women and children in PC ‘Aisyiyah Ngampilan
Authors: Nurjanah Adhianty , Prawoto Nano , Apriliani Riski
Published: April 2024

Pimpinan Cabang Aisyiyah (PCA) Ngampilan, at the Law and Human Rights Council, emphasized studies with a gender perspective that are in accordance with Islamic values, focusing on preventing violence against women and children. Community service is conducted to enhance media literacy related to preventing violence against women and children at PCA Ngampilan. This service aims to augment knowledge and provide assistance to PCA Ngampilan and the community regarding the protection of women and children using an Islamic approach. Activities involve socialization and content creation training about the importance of protecting women and children. This activity resulted in an 85% increase in knowledge about preventing violence against women and children.
Exploration of the toponymy of Terentang Village, West Bangka as an effort to preserve culture
Authors: Apriadi Figo Dwi , Harnaini Dini , Mariska Revi , Sintia Sintia , Qasthalani Haura Wafa , Utami Aprilia , Heryawan Shibyan , Supardi Supardi , Carla Olly Orva Peggy Kim , Sriwijaya Mawaddah Isnaini , Martahayu Vika
Published: April 2024

The issue at hand is the low level of knowledge among the community regarding the origin of Terentang Village. The objective of this community service program is to establish toponyms and educate the community about the background of Terentang Village while uncovering its cultural potential. The activities are conducted through educational outreach methods. The outcome of this program is the exploration of toponyms that reveal the origins of several place names, such as hamlets, rivers, and hills. Through a name, the origin story of a region can be transformed into cultural heritage worth preserving. Additionally, the community's knowledge regarding the origins of their area is also enhanced.
Entrepreneurship training and assistance for group businesses in Karangploso District, Malang Regency
Authors: Ariadi Bambang Yudi , Relawati Rahayu , Agustina Yohana
Published: April 2024

BUMDes (Village-Owned Enterprises) and KWT (Women's Farmers' Groups) in villages play a crucial role in fostering rural economic growth. Therefore, it is essential to bolster the entrepreneurial spirit among members of these groups. Community service activities conducted in Karangploso District, Malang Regency, aim to enhance the management capacity of BUMDes and KWT through training and mentoring approaches. The training targeted the chairpersons of BUMDes in Bocek Village and the leaders of KWT from all villages in Karangploso District. Training materials covered entrepreneurial motivation, business management, and product marketing. Post-training support was provided through the establishment of a social media group for consultation and discussion on group business activities. Topics included initiating new businesses, digital marketing, and business accounting. Ongoing mentoring activities were facilitated through social media and site visits as necessary. The outcome of this training and mentoring initiative was an increase in entrepreneurial motivation among participants. This heightened motivation translated into proactive identification and pursuit of business opportunities, generation of new product or service ideas, and enhanced participation in developing skills and knowledge related to business management, marketing, and finance.
The Increasing еhe Efficiency of Fiber Reinforced High-Strength Self-Compacting and Carcass Concretes
Authors: EROFEEV V.T. , TARAKANOV O.V. , ANANYEV S.V. , LESNOV V.V. , EROFEEVA I.V. , SANYAGINA Ya.A. , SIDOROV N.S. , ANANYEVA Y.S.
Published: April 2024

The results of experimental and theoretical studies of fiber reinforced concretes are presented. The purpose of the research was to establish physical and mechanical properties of self-compacting, carcass concrete and fiber reinforced concrete. When performing the research, white cement was used as a binder. As a reactive additive was used white carbon black BS-100. Plasticizing of the system was carried out by polycarboxylate SP. To increase the volume of dispersed phase, the combined filler from rheologically active fine ground rocks was used, namely: quartz flour R-6, and microcalcite RM-5. To form the filled structure of the composite we also used fine sand PB-150, and at the first stage steel microfiber “BMZ” and glass fiber
Corrosion Resistance of Shotcrete under the Influence of Salt Solutions
Authors: NOVIKOVA U.A. , STROKIN K.B. , KRASILNIKOVA I.A.
Published: April 2024

The article describes the relevance of new scientific research on the corrosion resistance of shotcrete applied as a protective coating on building structures. A formulation has been developed for five compositions of shotcrete, consisting of a basic and additional binder, fillers and hardening accelerators. The size and nature of the pores of the manufactured samples, the development of destruction by changes in mass and strength are investigated. The physicochemical features of the corrosive destruction of some shotcrete compositions in solutions of sodium sulfate and sodium chloride have been established, and the diffusion coefficients of chloride ions and sulfate ions have been determined. The numerical values of the parameters limiting the mass transfer of calcium hydroxide during corrosion of shotcrete are determined: the coefficients of mass conductivity and mass transfer.
Geotechnical Practice of Construction on Unstable Slopes
Authors: SOKOLOV N.S.
Published: April 2024

The construction of facilities for various purposes in rugged areas in cramped urban conditions for builders is the main problem associated with solving geotechnical tasks of providing both the slope itself and buildings and structures of the surrounding development in the zone of geotechnical influence. Questions arise regarding the need to develop buried retaining structures. The article considers a case from the geotechnical practice of installing retaining structures using bored piles with diameters of 600 mm and 800 mm and ground anchors arranged using electric discharge technology (ERT anchors).
Energy-Technology Indicators of a Multi-Drum Electric Furnace for Firing Vermiculite Concentrates
Authors: NIZHEGORODOV A.I.
Published: April 2024

The design and working process of a new electric drum furnace for heat treatment of vermiculite concentrates and conglomerates, as well as other bulk porous materials based on a silicate binder, are considered. The electric drum furnace is devoid of the disadvantages inherent in its predecessors – furnaces with a movable hearth platform: there are no oscillating elements, dynamic effects do not occur, and there is also no resonant mode of operation, since the working drums perform rotational motion with a constant angular velocity. Using the example of a six-drum furnace, the volumes of processed material located in the firing spaces are calculated, and the second and hourly productivity of the furnace (10 m3/h or 0.0029 m3/s) are determined. The temperature of the heating elements (1167 K) was calculated, the electric power of the furnace (95.2 kW) and the specific energy intensity of the firing process of vermiculite concentrate, with a dimension of 4 mm (0.004 m) from the raw materials of the Kovdorsky deposit – 44.2 MJ/m3, which makes the furnaces of the new design competitively capable, were determined.
Determination of the Residual Life of Rigid Road Pavements of Industrial Enterprises
Authors: BONDAREV B.A. , BONDAREV A.B. , YARTSEV V.P. , ZHIDKOV V.K.
Published: April 2024

Еhe main problems of determining the residual life of rigid road pavement structures of industrial enterprises are considered. An analysis of existing methods for determining the durability and residual life of highways of both rigid and non-rigid types of construction on public roads was carried out. As a result of the research carried out on the territory of the enterprise, an algorithm was proposed for calculating the residual life of the highway structure, based on changes in the longitudinal evenness of the pavement, the presence of defects and damages on the surface of the roadway, compaction of asphalt concrete layers, as well as the actual and calculated intensity of traffic flow. The study of auto-road pavement elements was carried out using the “Trassa” mobile road laboratory, and the determination of the physical and mechanical characteristics of the materials was carried out in the laboratory using modern research methods.
Bearing capacity and stability of reinforced concrete composite frame without collar beams at different operating stages
Authors: Podshivalov I. I.
Published: April 2024

The paper studies the load-bearing capacity and stability of reinforced concrete composite frame without collar beams during linear and physically nonlinear operation of its materials under static loading.Purpose: The strength analysis of a reinforced concrete frame without collar beams using the coefficient of structural strength in the linear calculation and use factor by bearing capacity determined by the limit surface of elements, as well as linear and physically nonlinear stability based on the limit repulsion of the system.Methodology: The computational substantiation of the bearing capacity and stability of the reinforced concrete frame at different stages of materials performance, is carried out in the Ing+2021 MicroFe program with the proposed finite element spatial model.Research findings: The structural strength and bearing capacity are calculated for reinforced concrete composite frame without collar beams during linear and physically nonlinear operation of its materials under static loading.
Stress-strain state of steel corrugated I-beams prestressed by flange drawing
Authors: Tishkov N. L. , Fomina A. S.
Published: April 2024

The material distribution in structures is an urgent scientific and technical problem. Corrugated and prestressed steel structures are efficient and reliable.Purpose: The aim of this paper is to study the operation of steel I-beam with a thin corrugated wall, prestressed by flange drawing.Methodology/approach: Finite element modeling of beams with corrugated and flat walls (models with flat wall, transversely corrugated wall, downward corrugation at an angle of inclination 20 degrees, ascending corrugation at an angle of inclination 20 degrees). The proposed method is used for prestressing the lower beam flange using negative temperature effects. Numerical experiments in LIRA-SAPR software allow to obtain the stress distribution isofields and deformation patterns. A comparative analysis of the stress-strain state.Research findings: The normal stress distribution over flanges of corrugated beams with and without prestress under the external load has low difference. Prestress produces significant deflections of structures and the greatest deflection of the beam with ascending corrugations.
Mathematical simulation of duration and frequency of water consumption by various water dispensers
Authors: Polivanov D. E.
Published: April 2024

Water flow rates calculated by using deterministic models and methods do not describe the real variability in the water supply operation. This problem can be solved by mathematical simulation. The stochastic nature of the water consumption process implies involves random variables with certain distribution laws describing the main process components, namely intensity, duration and frequency.This paper discusses the mathematical simulation of the duration and frequency of water consumption by the most common types of water dispensers (kitchen sink and bathtub faucets (shower cubicle), toilet bowl with flush tank, washing machine and dishwasher).Purpose: The aim of this work is to evaluate and substantiate theoretical laws of the water consumption by the most common types of water dispensers as well as the frequency (probability) of their daily use.Research findings: The duration and frequency are determined for water consumed by various water dispensers using water supply systems of buildings. The empirical data are analyzed. Mathematical simulation method is proposed and justified for the water consumption process.
Thermal protection properties of profiled timber with peat-vermiculite insulation
Authors: Tsvetkov N. A. , Tolstykh A. V. , Kopanitsa N. O. , Tsvetkov D. N. , Doroshenko Yu. N. , Gorkoltseva D. S.
Published: April 2024

Today, the use of environmentally friendly materials is becoming increasingly important. The construction of energy-saving buildings with enclosing structures made of insulated profiled timber, is one of the most promising areas in low-rise construction.Materials having minimum negative impact on the environment during their operation, include new construction insulation materials based on peat-vermiculite granules. The paper studies the main physical properties of wooden exterior walls made of profiled timber, in which peat vermiculite is used as insulation, thermal conductivity of which ranges from 0.05 to 0.06 W/(m·K). For this purpose, numerical simulation is performed for the heat-mass transfer in wooden enclosing structures made of insulated timber with three different connector options.The temperature and heat flow distributions are obtained as a result of modeling stationary thermal conductivity processes in timber structures. It is shown that plywood connectors do not affect the thickness temperature distribution in wooden walls with peat-vermiculite insulation. An increase in thermal conductivity of insulation has no significant effect on the temperature difference along the connector axis or outside the region of its temperature influence.It is found that the thickness of the peat-vermiculite insulation layer should be at least 0.176 m to ensure the compliance with the main requirements for thermal protection properties of enclosing structures in the climatic conditions of Tomsk. The greatest heat loss with a minimum insulation thickness is observed for the wall made of profiled insulated timber with T-shaped connectors. A high-strength timber with the additional central lamella has the best thermal protection with the lowest insulation thickness.
Silicate brick production using anhydrite raw material
Authors: Anikanova L. A.
Published: April 2024

Purpose: The aim of this work is to substantiate recycling of anhydrite raw materials for the production of silicate products and the development of methods for preparing source materials, compositions and process modes.Methodology/approach: Selection and research of basic materials, methods of their preparation for the production of silicate products; justification of process methods and assessment of quality parameters of materials with the required properties.Research findings: The possibility of utilizing acid fluoride during the synthesis of calcareous-siliceous binder used to produce silicate bricks during autoclave processing. The obtained sand-lime brick samples possess the following physical and mechanical properties: 1750 to 1900 kg/m3 average density, 10 to 12.5 MPa compressive strength, 16 or 17 % water absorption. The samples meet the requirements for sand-lime bricks, namely strength, density, water absorption and correspond to grades 100 and 125.Practical implications: The process modes of autoclaving are detected and the main operational characteristics of sand-lime brick are determined. Methods proposed for preparing raw materials and process conditions of silicate wall materials allow solving environmental problems and saving natural limestone raw materials.Novelty: Sand-lime brick production is based on anhydrite raw materials; suggested dependencies make it possible to control the composition and properties of silicate materials.
Evaluation of reliability of complex engineering systems using risk acceptance criteria
Authors: Kurasov O. A. , Burkov P. V.
Published: April 2024

The reliability evaluation of gas pipeline systems is one of the most important tasks, since the safety of gas supplies determines the reliable operation of the whole system.Purpose: This paper presents the evaluation methodology based on the risk acceptance criteria established in accordance with the current rules and standards.Methodology: A three-component methodology is used to evaluate the reliability level of gas pipeline systems. It is implemented by creating a model of failure consequences, which accounts for environmental conditions and pipeline properties. Acceptable probabilities of the pipeline failure are determined using the risk theory. Based on these data, the model is designed to assess the gas transport reliability in the pipeline system with regard to failure probabilities and hydraulic characteristics.Research findings: The reliability level of the system is determined using the acceptable failure probability. The obtained reliability is compared with that of the real pipeline system. The best procedure is proposed to maintain and improve the system reliability.
Endoscopic endonasal pituitary sacrifice for select tumors with retrochiasmatic and/or retrosellar extension: surgical anatomy, operative technique, and case series
Authors: Rychen Jonathan , Asmaro Karam , Constanzo Felipe , Ljubimov Vladimir A. , Lee Min Ho , Rinaldi Mariano , Xiao Limin , Gambatesa Enrico , Xu Yuanzhi , Lee Christine K. , Vigo Vera , Fernandez-Miranda Juan C.
Published: April 2024

OBJECTIVE

Tumors located in the retrochiasmatic region with extension to the third ventricle might be difficult to access when the pituitary-chiasmatic corridor is narrow. Similarly, tumor extension into the interpeduncular and retrosellar space poses a major surgical challenge. Pituitary transposition techniques have been developed to gain additional access. However, when preoperative pituitary function is already impaired or the risk of postoperative panhypopituitarism (PH) is considered to be particularly high, removal of the pituitary gland (PG) might be the preferred option to increase the working corridor. The aim of this study was to describe the relevant surgical anatomy, operative steps, and clinical experience with the endoscopic endonasal pituitary sacrifice (EEPS) and transsellar approach.

METHODS

This study comprised anatomical dissections to highlight the relevant surgical steps and a retrospective case series reporting clinical characteristics, indications, and outcomes of patients who underwent EEPS. The surgical technique is as follows: both lateral opticocarotid recesses are exposed laterally, the limbus sphenoidale superiorly, and the sellar floor inferiorly. After opening the dura, the PG is detached circumferentially and mobilized off the medial walls of the cavernous sinuses. The descending branches of the superior hypophyseal artery are coagulated, and the stalk is transected. After removal of the PG, drilling of the dorsum sellae and bilateral posterior clinoidectomies are performed to gain access to the hypothalamic region, interpeduncular, and prepontine cisterns.

RESULTS

From 2018 to 2023, 11 patients underwent EEPS. The cohort comprised mostly tuberoinfundibular craniopharyngiomas (n = 8, 73%). Seven (64%) patients had partial or complete anterior PG dysfunction preoperatively, while 4 (36%) had preoperative diabetes insipidus. Because of the specific tumor configuration, the chance of preserving endocrine function was estimated to be very low in patients with intact function. The main reasons for pituitary sacrifice were impaired visibility and surgical accessibility to the retrochiasmatic and retrosellar spaces. Gross-total tumor resection was achieved in 10 (91%) patients and near-total resection in 1 (9%) patient. Two (18%) patients experienced a postoperative CSF leak, requiring surgical revision.

CONCLUSIONS

When preoperative pituitary function is already impaired or the risk for postoperative PH is considered particularly high, the EEPS and transsellar approach appears to be a feasible surgical option to improve visibility and accessibility to the retrochiasmatic hypothalamic and retrosellar spaces, thus increasing tumor resectability.
Evaluation of the extent of resection of intracranial tumors with virtual intraoperative MRI: a case series
Authors: Mazzucchi Edoardo , Cavlak Lara Belis , Pignotti Fabrizio , La Rocca Giuseppe , Cusumano Davide , Rinaldi Pierluigi , Olivi Alessandro , Sabatino Giovanni
Published: April 2024

OBJECTIVE

Intraoperative MRI (iMRI) is the gold-standard technique for intraoperative evaluation of the extent of resection in brain tumor surgery. Unfortunately, it is currently available at only a few neurosurgical centers. A commercially available software, Virtual iMRI Cranial, provides an elastic fusion between preoperative MRI and intraoperative CT (iCT). The aim of this study was to evaluate the accuracy of this software in determining the presence of residual tumor.

METHODS

Virtual iMRI was performed in patients who underwent iCT after intracranial tumor resection. The results of the software in terms of presence or absence of tumor residual were then compared with postoperative MRI performed within 48 hours after surgery to evaluate the diagnostic accuracy of virtual iMRI.

RESULTS

Sixty-six patients were included in the present study. The virtual iMRI findings were concordant with the postoperative MRI data in 35 cases (53%) in the detection of tumor residual (p = 0.006). No false-negative findings (i.e., presence of residual on postoperative MRI and absence of residual on virtual iMRI) were encountered. Virtual iMRI had a sensitivity of 1 (95% CI 0.86–1), specificity of 0.26 (95% CI 0.14–0.42), positive predictive value of 0.44 (95% CI 0.3–0.58), and negative predictive value of 1 (95% CI 0.72–1). Subgroup analysis revealed that the virtual iMRI findings were concordant with postoperative MRI findings in all cases (n = 9) of lower-grade glioma (LGG) with a sensitivity of 1 (95% CI 0.59–1) and a specificity of 1 (95% CI 0.16–1) (p = 0.003); a statistically significant association was also found for grade 4 gliomas with a sensitivity of 1 (95% CI 0.69–1) and a specificity of 0.33 (95% CI 0.08–0.7) (p = 0.046) (19 patients). No significant association was found when considering meningiomas or metastases.

CONCLUSIONS

The commercially available virtual iMRI can predict the presence or absence of tumor residual with high sensitivity. The diagnostic accuracy of this method was higher in LGGs and much lower for meningiomas or metastases; these findings must be evaluated in prospective studies in a larger population.
Clinical, radiological, and laboratory factors associated with mortality and functional outcomes in pediatric patients presenting with intracranial gunshot wounds
Authors: Guillen Arguello Roboan , McCarty Patrick J. , Volk Jerome , Roberts Oritsejolomi , Haastrup Mary O. , Culicchia Frank
Published: April 2024

OBJECTIVE

Firearm injuries are now the leading cause of death in children and young adults younger than 25 years of age in the US. Current management of these injuries is extrapolated from adult blunt and penetrating traumatic brain injury guidelines. The objectives of this study were to investigate and analyze the clinical, radiological, and laboratory factors associated with mortality and functional outcomes in pediatric patients presenting with intracranial gunshot wounds (GSWs).

METHODS

Medical records were screened for all patients younger than 21 years of age with an intracranial GSW who presented to the University Medical Center in New Orleans, Louisiana, from 2012 to 2022. Demographics and radiological, clinical, and laboratory data were extracted, and chi-square and Fisher’s exact tests were used to evaluate individual association with mortality and functional outcome. Odds ratios were calculated from the cross tabulations for categorical variables and univariate binary logistic regression models for continuous variables. Multivariate binary logistic regression was used to adjust for effects of covariates and isolate the contributions of predictor variables for mortality and functional outcome.

RESULTS

Ninety-six patients (82 male, 14 female) had a median age of 18 (interquartile range [IQR] 15–20) years. The 30-day inpatient, 60-day, and 6-month mortality rates among these patients were 53.1%, 0%, and 2.4%, respectively. Those who died were more likely to have an initial Glasgow Coma Scale score ≤ 8 (p < 0.001), bilateral fixed pupils (p < 0.001), transventricular trajectory (p < 0.001), deep nuclear/third ventricle involvement (p = 0.004), bihemispheric trajectory (p = 0.025), injury to ≥ 3 lobes (p = 0.015), parietal lobe involvement (p = 0.023), base deficit < −5 mEq/L (p = 0.013), international normalized ratio (INR) > 1.5 (p = 0.007), and a St. Louis Scale (SLS) score ≥ 5 (p < 0.001). The survivors with favorable functional outcome were more likely to have lower median SLS scores (p = 0.016) and injury to < 3 lobes (p < 0.001). In a multivariate analysis, bilaterally fixed nonreactive pupils were positively associated with mortality and negatively associated with favorable functional outcome, whereas the Injury Severity Score (ISS) and injury to ≥ 3 lobes were negatively associated with favorable functional outcome only.

CONCLUSIONS

This is one of the largest series of pediatric intracranial GSWs to date. The authors identified certain clinical (bilateral fixed pupils, SLS score ≥ 5, ISS > 16), laboratory (INR > 1.5, base deficit < −5 mEq/L), and radiological (transventricular trajectory, deep nuclear/third ventricle involvement, parietal lobe involvement) factors that were associated with death and poor functional outcome in this pediatric cohort.
Penyidikan Tindak Pidana Penghasutan Dalam Unjuk Rasa Anarkis Oleh Satuan Reserse Kriminal Kepolisian Resor Kota Padang
Authors: Zahara Usi , Ismansyah  , Yoserwan Hamzah
Published: April 2024

Aksi unjuk rasa anarkis kerap kali dipicu oleh tindakan penghasutan oleh oknum tertentu. Seperti kasus Demonstrasi yang terjadi di depan kantor DPRD Sumatera Barat kota Padang pada tanggal 25 September 2019, yang berakhir anarkis akibat adanya dugaan penghasutan yang dilakukan oleh Ananda Harahap. Pembuktian tindak pidana ini, sering kali menimbulkan dilema bagi aparat penegak hukum, disebabkan mudahnya tindak pidana penghasutan berlindung dibalik hak untuk kemerdekaan berserikat dan menyatakan pendapat. Metode penelitian ini menggunakan pendekatan yuridis-sosiologis yang bersifat deskriptif.  Jenis data yang digunakan adalah data primer berupa hasil wawancara dan data sekunder berupa peraturan perundang-undangan, studi dokumen dan bahan kepustakaan. Berdasarkan kasus yang menjadi objek penelitian ini ditemukan fakta bahwa, perbuatan Ananda Harahap, telah memenuhi unsur-unsur tindak pidana penghasutan. Selain itu, terdapat kendala yang dihadapi penyidik Ditreskrimum Polda Sumbar dalam pemenuhan unsur tindak pidana ini pada unjuk rasa anarkis, yaitu: tindak pidana penghasutan merupakan delik materiil, tindak pidana penghasutan dalam Pasal 160 KUHP sebagai konstitusional bersyarat (conditionally constitutional), dan adanya Putusan Mahkamah Konstitusi Nomor 7/PUU-VII/2009 tentang Pengujian terhadap Pasal 160 KUHP sebagai pasal yang melanggar Hak Asasi Manusia.