bluuebunny/crossref_metadata_2025 huggingface dataset:
A framework to facilitate social entrepreneurship as a tool for sustainable tourism economies in Bergville, Okhahlamba Municipality
Authors:   , Mabaso Simiso Lindokuhle
Published: June 2024

This study investigated the role of social entrepreneurship as a tool in fostering sustainable tourism economies in Bergville – Okhahlamba Municipality. Social entrepreneurship (SE) was founded in the 1970s as a social movement to tackle the matters of social unsustainability and injustice rather than profit maximization. SE is viewed as a reactionary innovative reform, and a revolutionary movement aimed at big structural transformations by substituting one or many large social organizations with people leveraging combined expertise and resources to oppose or overturn what they think is socially unviable, unjust and damaging. SE has been applied to tourism in a number of countries globally. While the primary purpose of tourism businesses is to maximize their financial gains, ever shifting global goals, customer demands and stakeholder pressures force tourism businesses commit to meeting social responsibilities as well. Tourism Social Entrepreneurship (TSE) has been hailed for contributing to the preservation of traditional knowledge and practices of indigenous communities; enhancement of environmental sustainability; job creation, poverty reduction, and the overall improvement of the quality of life of especially rural communities. In South Africa, tourism development does not seem to have worked in addressing poverty reduction, because poverty reduction has not been placed at the heart of the tourism agenda and propoor tourism. The study adopted a pragmatic paradigm mixing both quantitative and qualitative methods to data collection, analysis and interpretation. The sample was composed of 35 tourism operators found in the area of study, as well as a government representative responsible for tourism in the area. Data were collected using a questionnaire composed of both quantitative and qualitative questions, as well an interview conducted with the government representative. The study found that there was a modest adoption of TSE in the area, and a good understanding of the business model and its potential benefits. The study also discovered that there were numerous challenges that TSEs were facing that could be addressed through better coordination of the actor-networks, government support, and determination of operators to continuously improve themselves and the operations of their businesses.
Study of the effect of Yantharin preparation in Murashige and Skooga nutrient medium on clonal micropropagation of some garden strawberry varieties
Authors:   Kostroma State Agricultural Academy, Pankratova Anna , Tolokontsev Dmitry
Published: June 2024

The article presents the results of studies on the influence of different variants of modification of Murashige and Skoog (MS) nutrient medium with the help of preparations of growth-regulating action. The researches were carried out on the basis of the educational and production laboratory of agricultural biotechnology of FGBOU VO Kostroma State Agricultural Academy. Regenerant plants of garden strawberry: Asia and Albion were used as research objects. As research subjects were used: growth regulator of cytokinin nature 6-BAP (6-benzinaminopurine), which is standard in plant biotechnology and growth-stimulating preparation - Yantarine, VRK. In the process of research work, a comparative analysis of the effect of different doses of cytokinin 6-BAP and Yantharin preparation on the growth and reproduction of plants of the studied varieties of garden strawberry was carried out. As a result, it was found that at the stage of clonal micropropagation of garden strawberry varieties Asia and Albion, the use of the preparation Yantarine (10.0 mg/L medium) in the nutrient medium together with cytokinin 6-BAP (0.5 mg/L) and 6-BAP (1.0 mg/L) in comparison with the traditional variant 6-BAP (0.5 mg/L medium) - control did not have a stimulating effect on the increase in height and number of micro rosettes formed by each plant regardless of variety. Keywords: CLONAL MICROPROPAGATION, MULTIPLICATION COEFFICIENT, GARDEN EARTH, VARIETY, GROWTH REGULATOR, IN VITRO
Thermal Comfort in Naturally-Ventilated (NV) Student Hostels in Hot-Humid Tropical Environment of Enugu, Southeast Nigeria
Authors: Uzuegbunam Francis O. , Uzuegbunam Tobenna D. , Isiofia Lawrence A. , Ibem Eziyi O.
Published: June 2024

This paper sought to determine the effects of design strategies on thermal comfort in naturally- ventilated student hostels. The review of related literature led to the postulation of two null hypotheses which served as a guide to the study. The data were collected via computer fluid dynamics (CFD) and simulations using the PHOENICS-VR programme. The principal component analysis (PCA), analysis of variance (ANOVA) and Pearson product-moment correlation were used in the data analysis. The results revealed a significant correlation between design strategies hinged on ventilation, temperature and relative humidity with passive ventilation for thermal comfort. The results also confirmed the degrees of effectiveness of the different design strategies and ranked them in the appropriate order for effective passive ventilation and thermal comfort. Some recommendations were made, while new areas were suggested for further study.
PENERAPAN MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN BERHITUNG PENJUMLAHAN DAN PENGURANGAN SISWA SD
Authors: HARAHAP UMMI KALSUM , SARI PAHMA , SOFIYAH KHOTNA
Published: June 2024

Kemampuan berhitung adalah usaha melakukan, mengerjakan hitungan seperti menjumlah, mengurangi serta memanipulasi bilangan-bilangan dan lambang-lambang matematika. Salah satu model pembelajaran yang dapat meningkatkan kemampuan berhitung penjumlahan dan pengurangan adalah model Problem Based Learning. Model pembelajaran Problem Based Learning merupakan salah satu model pembelajaran yang berpusat pada siswa sehingga dapat meningkatkan kemampuan berhitung penjumlahan dan pengurangan siswa yang mana siswa diajak untuk memecahkan sebuah permasalahan. Tujuan penelitian ini adalah untuk menunjukkan adanya pengaruh model pembelajaran Problem Based Learning dalam meningkatkan kemampuan berhitung penjumlahan dan pengurangan siswa dengan mengkaji berbagai karya ilmiah terkait penerapan model pembelajaran tersebut. Penelitian dilakukan dengan metode studi literatur terhadap artikel ilmiah. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah teknik dokumentasi. Penelitian ini menggunakan data sekunder. Data sekunder yang dimaksud dalam penelitian ini yaitu artikel ilmiah dari berbagai jurnal, sebanyak 10 artikel yang dikumpulkan dan dianalisis menunjukkan bahwa model pembelajaran Problem Based Learning dapat meningkatkan kemampuan berhitung penjumlahan dan pengurangan siswa sekolah dasar.
ABSTRACTNumeracy ability is the effort to carry out calculations such as adding, substracting and manipulating numbers and mathematical symbols. One learning model that can improve the ability to calculate addition and substraction is the Problem Based Learning model. The Problem Based Learning model is a student centered learning model, so that it can improve students addition and substraction numeracy skills where students are invited to solve a problem. The aim of this research is to show the influence of the Problem Based Learning model in improving students addition and substraction numeracy skills by examining various scientific works related to the application of this learning model. The research was carried out using the literatur study method of scientific articles. The data collection technique used in this research is documentation technique. This research uses secondary data. The secondary data reffered to in this research are scientific articles from various journals. A total of 10 articles collected and analyzed show that the Problem Based Learning model can improve elementary school students addition and substraction numeracy skills.
Measurement report: Aerosol vertical profiling over the Southern Great Barrier Reef using lidar and MAX-DOAS measurements
Authors: Ryan Robert G. , Toms-Hardman Lilani , Smirnov Alexander , Harrison Daniel , Schofield Robyn
Published: June 2024

Abstract. Aerosol vertical profile measurements were made using multi-axis differential optical absorption spectroscopy (MAX-DOAS) and mini-Micropulse LiDAR (MPL) at One Tree Island in the Southern Great Barrier Reef from February to April 2023. This is an understudied location in terms of atmospheric aerosols and chemistry but is growing in importance as multiple research streams examine the influence of aerosols on radiation over the Great Barrier Reef. Solar radiation management proposals require regional-scale aerosol modelling, which is evaluated against aerosol extinction and optical depth measurements, necessitating a thorough understanding of measurements of these quantities. MPL aerosol retrieval showed extinction-to-backscatter ratios (0.031 on average) and depolarization ratios (0.015 on average) consistent with clean, unpolluted Southern hemispheric marine aerosol. The maximum depolarization ratio tended to be above the layer of maximum MPL backscatter, which is attributed to dried sea-salt layers above the boundary layer. MAX-DOAS and MPL extinction profiles show aerosol layers extending beyond 2 km altitude in the middle of the day, but predominantly below 1 km at other times. We also compared aerosol optical depth measurements from integrating the MAX-DOAS and MPL extinction profiles, with observations from a hand-held Microtops sun photometer. Mean aerosol optical depth (AOD) values across the campaign compare well, being 0.083 ± 0.002 for the Microtops, 0.090 ± 0.032 for the MAX-DOAS and 0.104 ± 0.028 for the MPL. However, AOD observations at a given time, and the AOD diurnal cycle, often varied between instruments. This likely indicates strong horizontal inhomogeneity in aerosol in this environment, a factor which makes it challenging to accurately compare AOD estimates from different viewing geometries, but which is important for future aerosol modelling studies in this region to consider.
Technical note: Refining δ15N isotopic fingerprints of local NOx for accurate source identification of nitrate in PM2.5
Authors: Xiao Hao , Li Qinkai , Ding Shiyuan , Dai Wenjing , Cui Gaoyang , Li Xiaodong
Published: June 2024

Abstract. Stable nitrogen isotopic composition (δ15N) has proven to be a valuable tool for identifying sources of nitrates (NO3–) in PM2.5. However, the absence of a systematic study on the δ15N values of domestic NOx sources hinders accurate identification of NO3– sources in China. Here, we systematically determined and refined δ15N values for six categories of NOx sources in the local Tianjin area using an active sampling method. Moreover, the δ15N values of NO3– in PM2.5 were measured during pre-heating, mid-heating and late-heating periods, which are the most heavily polluted in Tianjin. Results shown that the representative nature and region-specific characteristics of isotopic fingerprints for six categories of NOx sources in Tianjin. The Bayesian isotope mixing (MixSIAR) model demonstrated that coal combustion, biomass burning, and vehicle exhaust collectively contributed more than 60 %, dominating the sources of NO3– during sampling periods in Tianjin. However, failure to consider the isotopic signatures of local NOx sources could result in an underestimation of the contribution from coal combustion. Additionally, the absence of industrial sources, an uncharacterized source in previous studies, may directly result in the contribution fraction of other sources being overestimated by the model more than 15 %. Notably, as the number of sources input to the model increased, the contribution of various NOx sources was becoming more stable, and the inter-influence between various sources significantly reduced. This study demonstrated that the refined isotopic fingerprint in a region-specific context could more effectively distinguish source of NO3–, thereby providing valuable insights for controlling NO3– pollution.
LoD2BIM: A New Workflow for reconstructing and converting LoD2 Model to Information-rich IFC Model for Existing Building
Authors: Xia Zhongxin , Rüppel Uwe
Published: June 2024

Abstract. Numerous existing buildings in Germany lack corresponding BIM models. Advanced analysis and visualization purposes, including indoor navigation, energy demand simulations, and building materials recycling on these buildings presents significant challenges, as only Level of Detail 2 (LoD2) models provided by local housing authorities, along with architectural drawings and textual descriptions of the internal structures, are available. This paper proposes a semi-manual workflow, LoD2BIM, to facilitate the efficient reconstruction and conversion of existing building models, particularly transforming Germany's official 3D Building Models in LoD2 into comprehensive, information-rich IFC models using open-source software. Through the integration of BaseX and CesiumJS, the visualization, querying and extracting of one LoD2 model from CityGML file become easy and feasible. Central to the LoD2BIM workflow is Blender, it acts as the primary platform for model editing, reconstruction and conversion. Users can expediently rebuild and refine LoD2 models utilizing Blender’s visual interface and the tool floorplan to blender3d, based on floorplans or detailed written descriptions. New Blender add-ons are developed to streamline the model import and conversion process. The BlenderBIM add-on is also modified to facilitate the automatic batch assignment of mesh as IFC classes. This workflow not only showcases the reconstruction and subsequent conversion of CityGML models into IFC models but also illustrates the potential to act as an alternative to commercial software in Building Information Modeling (BIM) editing.
Optimizing Building Energy Systems through BIM-enabled georeferenced Digital Twins
Authors: Blut Christoph , Becker Ralf , Kinnen Tristan , Schluetter Dominik , Emunds Christoph , Frisch Jérôme , Heidermann Dirk , Wenthe Matthias , Rettig Tobias , Baranski Marc , van Treeck Christoph , Blankenbach Joerg
Published: June 2024

Abstract. Building energy system management is critical for resource-saving approaches amid climate change-driven energy transitions. This paper presents a digital twin toolchain leveraging modern technologies such as Building Information Modeling (BIM), Artificial Intelligence (AI), Virtual Reality (VR), and Augmented Reality (AR). The toolchain automates the derivation of georeferenced digital twins during Technical Building Equipment (TBE) commissioning. Using a Scan vs. BIM process, discrepancies between as-planned and as-built TBE are identified, allowing automatic updates to the BIM model. Validation methods ensure both physical and functional aspects of the TBE are accurate. VR and AR facilitate off- and on-site commissioning, enabling immersive visualization and live sensor data access. An evaluation in small and large-scale demonstrators shows the toolchain's scalability and efficiency, with promising results in performance and accuracy. Future work aims to integrate more operational data, enhancing the digital twin's capabilities for building energy system management.
Ontology Based Integration of BIM and GIS for the Representation of Architectural, Structural and Functional Elements of Buildings
Authors: Korkmaz Özlem , Basaraner Melih
Published: June 2024

Abstract. Building Information Modelling (BIM) and Geographic Information System (GIS) integration allows for analysis and visualization of geospatial characteristics and relationships of buildings and their surroundings for in a number of domains such as planning and management of built environments and disaster management. BIM provides detailed geometric and semantic data about a building and its elements. Moreover, it is a technology that enables 3D display of architectural, structural, and mechanical, electrical, and plumbing (MEP) projects in a local cartesian coordinate system. On the other hand, GIS employs global (geographic or projected) coordinate systems, thereby allowing for the integration, analysis, and visualization of various geospatial data. The development of BIM and GIS for different purposes brings about differences in spatial focus, geometric and semantic representations, level of detail, coordinate systems, and other aspects. In order to eliminate these differences and ensure integration, geometric transformation and semantic transfer are required. The semantic web represents a logical preference for semantic transfer, characterised by a natural ability to integrate information from disparate sources. In this study, the detailed geometric and semantic data of a building with structural, architectural, and MEP projects in BIM were integrated with the geospatial data in GIS using a semantic web approach. For this purpose, an ontology including concepts, relationships, and attributes was developed with the contribution of core ontologies from BIM and GIS. Semantic and geometric data values related to the building and its elements were transferred to this developed ontology, which was formatted in RDF format. Queries were made using SPARQL to analyse the transferred data. The results of these queries indicated that the semantic web is well suited for use in BIM and GIS integration.
Machine learning classification of intertidal macroalgae using UAV imagery and topographical indexes
Authors: Martínez Movilla Andrea , Rodríguez Somoza Juan Luis , Martínez Sánchez Joaquín
Published: June 2024

Abstract. Intertidal macroalgae play a vital role in marine ecosystems, necessitating effective monitoring of their coverage and diversity. Traditional monitoring methods are labour-intensive and costly, prompting exploration of the use of unmanned aerial vehicles (UAVs) to characterize intertidal ecosystems. We propose an alternative process integrating UAV red-green-blue (RGB) imagery and topographic indexes to classify complex intertidal macroalgae assemblages automatically. We studied two intertidal areas capturing eight flights between May and September 2023. Orthoimages and Digital Elevation Models (DEMs) were generated. Manual segmentations for 24 classes were cropped into images of individual labels. Additional channels with five topographic indices were added to the RGB images. The resulting dataset of 6412 images was then used to train a Convolutional Neural Network (CNN). We tested the benefit of the additional topographic indices by training the CNN with and without the topographic channels. The best results were given by the inclusion of the Analytical hillshade to the RGB images, showing a relative 11.3% increase in classification accuracy. This indicates that 3D data can enhance the performance of macroalgae classification models. However, there was no significant improvement when using more than one topographic index to train the CNN. Our workflow offers a cost-effective and robust solution for intertidal macroalgae monitoring, contributing to ecological conservation efforts.
Pelatihan Pemprograman Python Tingkat Dasar Untuk Pemetaan Wilayah Di SMA Ksatrian 02 Semarang
Authors: Dwi Prabowo  , Sundaro Hendrianto , Ayu Permatasari AR Ratna
Published: June 2024

Perkembangan Dunia Pendidikan semakin lama semakin pesat, siswa dituntut untuk dapat mengikuti perkembangan teknologi. Pemanfaatan teknologi salah satunya bisa di terapkan melalui pemahaman bahasa pemograman. Pemahaman terhadap dunia coding menjadi hal yang utama bagi siswa-siswi sekolah menengah atas saat ini dan di masa yang akan datang. Hal ini menginspirasi para dosen Universitas Semarang Jurusan Perencanaan Wilayah & Kota mengadakan kegiatan PKM. Kegiatan PKM utama yang dilakukan adalah Pelatihan Pemograman Python Tingkat Dasar bagi siswa-siswi di SMA Ksatrian 2 Kota Semarang. Pelatihan ini bertujuan agar membuka cakrawala awal dan ketertarikan mereka akan dunia programming yang berkaitan dengan bidang perencanaan wilayah dan kota. Materi pelatihan yang telah diberikan meliputi pemahaman Bahasa pemprograman Python dan Pelatihan operasi dasar Python meliputi Variable, Sequence, Selection dan Looping di Lab komputer SMA Ksatrian 2 Kota Semarang. Hasil dari kegiatan ini adalah siswa dapat membuat aplikasi menggunakan bahasa pemograman Python.
Edukasi Pemanfaatan Internet dan IoT Untuk Meningkatkan Pengetahuan Bagi Pekerja Sosial Masyarakat Kelurahan Sukasari Tangerang
Authors: Sudrajat Budi , Roma Doni Fahlepi , Herlan Asymar Hasta , Darrusalam Muhammad
Published: June 2024

Pengabdian masyarakat ini bertujuan untuk meningkatkan pengetahuan pekerja sosial masyarakat (PSM) di Kelurahan Sukasari, Tangerang melalui edukasi pemanfaatan Internet dan Internet of Things (IoT). Dalam era digital, kemampuan mengakses dan memanfaatkan teknologi informasi menjadi krusial untuk efektivitas kerja PSM. Kondisi saat ini menuntut warga sekitar Kelurahan Sukasari Kota Tangerang harus dapat bertransformasi dalam pengetahuan dan teknologi yang terus berkembang dewasa ini, di masa seperti ini mereka dituntut bisa menggunakan teknologi seperti media internet dan penggunaan smartphone. Metode yang digunakan adalah pendekatan kualitatif dengan teknik observasi, wawancara, dan pelatihan. Program edukasi ini mencakup pengenalan dasar internet, penggunaan aplikasi penting dalam pekerjaan sosial, serta penerapan IoT untuk memonitor dan mengelola data kesejahteraan masyarakat secara lebih efisien. Hasil dari penelitian menunjukkan peningkatan yang signifikan dalam pemahaman dan keterampilan PSM terkait teknologi digital. Para peserta mampu mengakses informasi lebih cepat, berkomunikasi lebih efektif, dan memanfaatkan perangkat IoT untuk tugas-tugas operasional seperti pemantauan kondisi kesehatan dan lingkungan. Kesimpulan dari pengabdian masyarakat ini adalah bahwa edukasi mengenai Internet dan IoT sangat bermanfaat bagi PSM, tidak hanya untuk meningkatkan kinerja mereka tetapi juga untuk memberikan pelayanan yang lebih baik kepada masyarakat. Dengan demikian, program edukasi ini diharapkan dapat dijadikan model untuk diterapkan di kelurahan-kelurahan lain guna memberdayakan pekerja sosial di seluruh Indonesia
Pelatihan Mikrokontroler Arduino-R3 bagi siswa SMK N 1 Purwokerto.
Authors: Darso Darso , Rifqi Permana Muhammad , Ramadhan Akbar , Dwi Seto Ikhsan , Dwi Apitiadi Satyo , Angga Ferdianto Dwi
Published: June 2024

Program pelatihan mikrokontroler Arduino R3 merupakan hasil kerjasama dengan SMK N 1 Purwokerto. Pelaksanaan pelatihan sangat penting bagi siswa dalam mengupgrade ketrampilan dan pengetahuan tentang penggunaan teknologi mikrokontroler arduino R3. Dalam penerapannya Siswa mendapatkan teori dan praktik pelatihan mikrokontroler arduino untuk pembelajaran bidang pendidikan. Peserta juga dapat memanfaatkan teknologi mikrokontroler Arduino R3 untuk mengembangkan project aplikasi lain. Dengan terlaksananya pelatihan ini Tim dari Universitas Amikom Purwokerto dapat memberikan peningkatan ketrampilan cara membuat projek aplikasi sederhana berbasis mikrokontroler Arduino R3 pada para peserta, serta siswa mendapatkan pengetahuan tentang potensi wirausaha pada bidang teknologi. Hasil respon peserta terhadap pelatihan ini yaitu rata rata memberikan nilai “1” predikat “sangat baik”.
Aplikasi Layanan Bengkel Online Berbasis Web Pada Studi Independen Kampus Merdeka
Authors: Setyanto Rangga , Darmanto Eko
Published: June 2024

Teknologi informasi semakin berkembang, semua aspek sudah mengalami perkembangan dan sudah banyak melakukan pengembangan. Dan dalam penelitian ini kelompok kami telah membuat gagasan dengan membangun sebuah sistem pelayanan berbasis internet. Pelayanan bengkel online ini dibangun guna memenuhi permintaan masyarakat yang semakin mengalami kesulitan untuk menemukan bengkel apabila mengalami kerusakan pada kendaraannya. Aplikasi Bengkel.In ini merupakan terobosan yang sangat cocok untuk memecahkan permasalahan yang ada. Aplikasi tersebut juga suatu terobosan dari berkembangnya teknologi informasi di masa sekarang dan juga dapat beradaptasi terhadap perkembangan di era modern seperti sekarang, dan para pelaku usaha jasa dapat terbantu oleh sistem yang telah dibuat tersebut. Berdasarkan hasil penelitian menunjukkan bahwa metode yang diusulkan dapat memungkinkan pengguna dengan lebih mudah dan efisien, meningkatkan kinerja sebesar 40% dan kepuasan pengguna sebesar 32% Agar para pengguna tidak mengalami kesulitan lagi menemukan bengkel dan juga para pelaku usaha bengkel tidak kesulitan lagi mencari pelanggan.
Preservar paisagens no antropoceno
Authors: Magalhães Cristiane
Published: June 2024

O artigo apresenta estudo dos contextos da preservação do patrimônio paisagístico brasileiro e da qualificação do entendimento de paisagem e de paisagem cultural em diferentes épocas. A vertente deste artigo é conceitual, no entanto, analisamos os processos de tombamento federal e estadual da Serra do Curral, em Belo Horizonte, inserido no debate sobre a preservação de patrimônios paisagísticos no Brasil. Deste modo, apresentamos os debates e as formulações teórico-conceituais dos termos paisagem e paisagem cultural ao longo do século XX. Assim delimitado, o texto é importante para pensar toda e qualquer paisagem patrimonializada, reconhecida como paisagem cultural, tal qual uma Serra, como a Serra do Curral, localizada em Belo Horizonte (MG), ou uma parcela de uma cidade, como o Rio de Janeiro e suas paisagens entre a Montanha e o Mar (inscrita na Lista da UNESCO, em 2012).
Política Habitacional no Distrito Federal
Authors: Bizinoto Fernandes Isabella , Schvarsberg Benny
Published: June 2024

A partir da extensa bibliografia já produzida acerca do planejamento urbano de Brasília e o percurso das políticas habitacionais implementadas no Brasil da década de 1960 até os dias atuais, o presente trabalho apresenta a trajetória da política habitacional no Distrito Federal, com enfoque na elaboração e revisão do PLANDHIS – Plano de Habitação de Interesse Social do DF.
Dessa forma, o artigo expõe brevemente a maneira como as políticas habitacionais foram implementadas até a criação do SNHIS – Sistema Nacional de Habitação de Interesse Social, e quais as suas consequências para a questão habitacional e o desenvolvimento da cidade, com base em análises precedentes e documentos públicos, principalmente do âmbito do Distrito Federal.
Assim, por meio de um comparativo entre os PLANDHIS elaborados em 2012 e revisado/atualizado em 2023, a análise discorre acerca do escopo, elaboração e propostas apresentadas. A conclusão desse apanhado indica que a minuta do PLANDHIS publicada em 2023, avança ao propor uma quebra importante de paradigma de política habitacional encarando a moradia como um serviço público, sob um olhar apurado para as necessidades específicas de cada grupo social principalmente a população em situação de vulnerabilidade.
Internal Quality Assurance (IQA) Tools and Processes Used by Vietnamese Universities: Implications for Continuous Improvement
Authors: Ta Hien Thu Thi , Pham Huong Thi
Published: June 2024

Based on Martin’s and Parikh’s (2017) model of quality assurance, this research investigated the extent to which higher education institutions in Vietnam developed Internal quality assurance (IQA) processes and tools in five aspects: teaching and learning, students’ employability, research, governance, revenues and community services, and international affairs. This study surveyed university leaders, middle managers, faculty members, and support staff from 13 universities. These universities were recruited from 44 universities in a city in Vietnam using a stratified sampling technique. It was found that (a) these universities used two common IQA tools (student course experiences and students’ satisfaction) to ensure and improve the quality of teaching and learning, (b) most universities developed and used all surveyed IQA tools to assure the quality of student services as well as to promote students’ employability, (c) as regards governance-related IQA tools, most universities only focused on units’ evaluation, and (d) the participating universities reported limited use of tools to assure revenues and community services and international affairs. Based on the findings of this study, the paper offers implications for universities in Vietnam to enhance quality and develop a management information system to analyze data collected from these tools for quality improvement.
ESTABLISHING NORMAL PENILE SKIN SENSATION USING TWO-POINT DISCRIMINATION TEST
Authors:   Department. of Pediatric Surgery, Bab Alhawa Relief Hospital, Edleb, Syria., El-Mefleh Naser , Eyad Ba’Ath Muhammad ,   Danat Al Emarat Hospital, Dubai, United Arab Emirates.
Published: June 2024

Introductions: To many penile surgeries, degloving of the penis is a routine part. The effect of this on penile sensation is unknown. The Two-Point Discrimination test (TPD) is used in clinical practice to evaluate sensory nerve function. There is no normative data for two-point discrimination sensation in the penile skin in children. Methods: Participants were prospectively collected from the pediatric surgical clinic patients provided they were: 7 years or older, generally healthy with no known systemic or neurological disease, had no prior genitourinary surgery or trauma, and demonstrated understanding of the test principle on the fingers. Lowest TPD test was recorded for the following areas: dorsum of penis, ventral surface of penis, pubic skin, scrotum and medial thigh. The test was started at 5 mm and incrementally increased by 1-2 mm until the child could reliably feel two separate touch points by giving correct responses 4 out of 5 or 7 out of 10 times for each area. Data was analysed using mean +/- standard deviation. Results: 24 patients were enrolled during the study period August 2021 - October 2022, mean age 10 +/-2.1 years. TPD for dorsal and ventral penile skin was 8.5 +/-1 mm. For the scrotum, pubic skin and medial thigh; TPD was 9.9 +/-1.6, 10.3 +/-1.8 and 14 +/- 2.4 mm; respectively. Conclusion: Normal TPD for the penile skin is around 8 mm. This will aid in studying sensory effects of penile surgery, particularly degloving penile skin.
Endometrial Tumors with “Shadow Cells” Intimate a Neoplastic Potential for Morules or Their Progenitors in β-Catenin Mutated Endometrial Adenocarcinomas.
Authors:   Orlando Health Orlando Regional Medical Center, Department of Pathology, Orlando, FL 32806 (retired), USA, Maksem John
Published: June 2024

Background : Several features are shared by endometrial morules and pilomatrixoma-like endometrial carcinomas including CDX-2 and β-catenin nuclear staining, absence of p63 and p40 nuclear staining, and a unique form of endepithelial differentiation that produces so-called shadow cells. Both endometrial morules and pilomatrixoma-like endometrial carcinomas may be associated with low-grade endometrioid adenocarcinoma. Methods : We present 11 fully staged endometrioid endometrial adenocarcinomas that showed extrauterine metastases (Stages III and IV), morules, shadow cell differentiation, and nuclear β-catenin positive immunohistochemical staining (both in morules and in adjacent malignant glandular cells). Results : All intrauterine adenocarcinomas had at least focal components of grade 1 endometrial adenocarcinoma and morules and showed nuclear β-catenin immunostaining in morules and in adjacent malignant glandular cells. 10 cases were stages III and IV endometrial cancers, and one, initially diagnosed as grade 1 stage II endometrioid endometrial adenocarcinoma, rapidly recurred in the retroperitoneum as a nuclear β-catenin positive pilomatrixoma-like tumor without an obvious glandular component. Two positive lymph node dissections showed metastatic adenocarcinoma with malignant glands, morules and shadow cells. Five cases showed at least focal components of morphologically divergent high-grade tumor with foci resembling malignant pilomatrixoma. Extrauterine “shadow cell granulomas” were detected in 8 cases. Conclusion : Metastatic nuclear β-catenin positive endometrial adenocarcinomas with morules can metastasize and show pilomatrixoma-like tumor foci. This highlights the ability of these cancers to evolve into “other-than-glandular” carcinomas. Furthermore, because of their shadow cell features, we speculate that endometrial morules are not simply inert “epitumoral” elements; but that either they or the population of progenitor cells from which they eventuate harbors an abnormal β-catenin gene that may endow endometrial adenocarcinomas with morules the capacity for progressive, divergent differentiation into a higher-grade matrix-producing tumor.
Study of the effects of Thermal Aging coupled with Shot-peening Treatment of Carbonitrided DIN 1.6587 Low Alloy Steel on Retained Austenite and Residual Stresses
Authors: Katemi Richard
Published: June 2024

This work investigated the effects of thermal aging and shot-peening of carbonitrided 1.6587 steel grade on retained austenite and residual stresses. After carbonitriding samples contained maximum of 0.87% carbon, 0.34% nitrogen and 50 mass. -% retained austenite. Thermal aging conditions investigated were -30°C, 90°C and 150°C while the aging period were 14, 96 and 720 hours. After thermal aging, some of the samples were subjected to shot-peening treatment using standard cut wire shots StD – G3 - 0.6 mm VDFI 8001 with intensity in the range of 0.25 to 0.30 mmA and coverage of 1.00 to 1.24 x 98%. It was found that the quantity and size of finely disseminated precipitates increase with increasing aging temperature and time accompanied by darkening of martensite plates. The magnitude and distribution of hardness in the case layer was highly influenced by aging conditions with an increase of up to 50 HV for peak hardness and up to 120 HV at a depth of 50 µm on aging at -30°C. Aging at 90°C, hardness distribution remains relatively unaffected while at 150°C for 720 hours the magnitude of hardness is slightly improved mainly to decomposition of retained austenite to bainite. Aging at 90°C, retained austenite remains relatively stable and readily transforms on aging at - 30°C and 150°C for 720 hours; transformation of up to 20% of the initial retained austenite can be reached which enhances compressive residual stresses of up to -120 MPa in retained austenite and up to - 250 MPa in martensite phase. Aging coupled with shot-peening treatment induces transformation of up to 48% of the initial retained austenite and enhances compressive residual stresses of up to -1200 MPa in both phases. It can be concluded that thermally aging coupled with shot-peening treatment reduces retained austenite and significantly enhances residual stresses which is essential to improved ductility and fatigue life of carbonitrided parts.
Enhanced Post Deposition Annealing Conditions on the Fabrication of High Quality Thermochromic Vanadium Dioxide Films
Authors: Japhet Tarimo Delvina , Mlyuka Nuru , E. Samiji Margaret
Published: June 2024

Sputter deposition of thermochromic VO 2 thin films for smart window applications has been faced with several challenges including the need for high deposition temperature, extremely precise and narrow range of oxygen/argon flow ratio and target poisoning during sputtering. Deposition of VO 2 at room temperature without oxygen followed by post-deposition annealing has been cited as one of the potential mitigations to the challenge. In this study, the effects of post- deposition annealing conditions on the structural, electrical and optical properties of VO 2 thin films are reported. The films were prepared on soda lime glass substrates using DC magnetron sputtering of metallic vanadium target in argon atmosphere, at room temperature without oxygen followed by post-deposition annealing. The working pressure and argon flow rate were mbar and 76 ml/min, respectively. Thereafter, the films were annealed in a low vacuum environment at different temperatures and times. The XRD results confirmed that all films annealed at different temperatures and times were monoclinic VO 2 except for films annealed at a temperature of 300 o C. The results indicate that 400 o C and 20 minutes are the optimum annealing temperature and time, respectively, for fabrication of high-quality VO 2 films with improved stoichiometry and crystallinity. The films had resistivity change between the semiconducting and metallic phases of one order of magnitude and the transition temperature between 58 o C and 63 o C. The highest peak transmittance and best optical switching of the annealed VO 2 films was 53% and 18%, respectively, at a wavelength of 2500 nm for film thickness of 44 nm. The results suggest that room temperature deposition without oxygen followed by post-deposition annealing in a low vacuum environment may be adequate for the fabrication of switching VO 2 thin films.
INFLUENCE OF SEVERE DYNAMIC ACTION ON THE STRUCTURE AND PROPERTIES OF AUSTENITIC WELD METAL WITH NITROGEN
Authors: Смоленцев А.С. , Веселова В.Е.
Published: June 2024

Исследовано влияние локального высокоскоростного интенсивного динамического воздействия металлическим предметом (индентором) на изменение структуры металла шва высокопрочной легированной стали, сваренной аустенитной порошковой проволокой с азотом. Установлено, что после сварки структура металла шва состоит из аустенита и дельта-феррита (3 об. %) с микротвердостью HV0,1 200–250. После интенсивного динамического воздействия происходит упрочнение металла шва по механизму γ→ε→α’ за счет наклепа и образования в структуре α’-мартенсита деформации в количестве 10 об. % и незначительного количества ε-мартенсита с сохранением исходного количества δ-феррита, с повышением микротвердости более чем в 1,7 раза от первоначального уровня.

The effect of local high-speed intense dynamic action by a metal object (indenter) on the change in the structure of the weld metal of highstrength alloy steel welded with nitrogen austenitic flux-cored wire has been studied. It is established that after welding the structure of the weld metal consists of austenite and delta-ferrite (3 vol. %) with microhardness HV0,1 200–250. After intense dynamic action, the weld metal is strengthened by the mechanism γ→ε→α’ due to work hardening and the formation of deformation in the structure of α’-martensite in the amount of 10 vol. 5 and a small amount of ε-martensite while maintaining the original amount of δ-ferrite, with an increase in microhardness by more than 1.7 times from the initial level.
APPLICATION OF LOCALLY MADE NON-MAGNETIC STEEL IN RUSSIAN OIL AND GAS SECTOR
Authors: Бравков П.В. , Гусманов Р.З. , Жданеев О.В. , Чучков А.А. , Яковлев А.С.
Published: June 2024

В 2019 г. авторами был проведен анализ цепочек поставок и отмечена полная зависимость российских производителей компоновок низа бурильной колонны от поставок зарубежных немагнитных сталей. Были разработаны и утверждены отраслевые технические требования к немагнитным сталям с учетом режимов работы бурового оборудования и проведен аудит литейных производств на территории Российской Федерации. В 2020 г. по заказу ООО «ПКФ Газнефтемаш» на мощностях ПАО «Русполимет» произведена опытная партия прутков из аустенитной немагнитной стали. Лабораторные испытания подтвердили соответствие отраслевым требованиям: предел текучести 1093 МПа, предел прочности 1155 МПа, работа удара 242 Дж. Авторским коллективом проанализированы ведущие мировые практики по проведению опытных испытаний изделий из немагнитных сталей, на основе которых разработана и утверждена методика опытно-промышленных испытаний в полевых условиях. В статье приведены результаты опытной эксплуатации изделий, обоснован допуск к серийному применению оборудования, изготовленного из прутков диам. до 95 мм. Представлен анализ дефектов, обнаруженных при опытной эксплуатации оборудования и определены возможности для адаптации технологического процесса изготовления прутков диаметром выше 95 мм.

In 2019, the authors analyzed supply chains and noted the complete dependence of Russian manufacturers of bottom hole assemblies for drilling on the supply of non-magnetic steels. Industry technical requirements for non-magnetic steels were developed and approved, taking into account the operating envelope of drilling equipment.An audit of foundries in the Russian Federation was conducted. In 2020, by order of PKF Gazneftemash LLC, a pilot batch of rods made of austenitic non-magnetic steel has been produced at the facilities of PJSC Ruspolimet. Laboratory tests confirmed compliance with industry technical requirements: yield strength 1093 MPa, tensile strength 1155 MPa, impact work 242 J. The authors analyzed the world’s leading practices in conducting field tests of products made of non-magnetic steels, based on which a field industrial testing methodology was developed and approved. The article presents the results of trial field operations, and proves the serial use of equipment made from non-magnetic rods with a diameter of up to 95 mm. An analysis of defects obtained during trial field operations is presented and opportunities for adapting the technological process for manufacturing rods with a diameter above 95 mm are identified.
PERAN BUMDes DALAM PEMBERDAYAAN MASYARAKAT (STUDI KASUS BUMDes MANEKAN DESA OEFETO KECAMATAN AMABI OEFETO KABUPATEN KUPANG)
Authors: Pah Theny I. B. Kurniati , Lay Marthina Raga , Therik Jeny J.
Published: June 2024

Penelitian ini mencoba memetakan permasalahan peran dari BUMDes Manekan yang berlokasi Desa Oefeto Kecamatan Amabi Oefeto Kabupaten Kupang. Lebih lanjut penelitian ini menyoroti desa sebagai basis yang harus diperhatikan  dalam pengelolaan pemerintahan demi kesejahteraan. Oleh karena itu penelitian ini mencoba untuk menganalisis dan mendeskripsikan bagaimana peran BUMDes Manekan  dalam pemberdayaan masyarakat di Desa Oefeto Kecamatan Amabi Oefeto Kabupaten Kupang. Metode yang digunakan dalam penelitian ini yaitu kualitatif. Peneliti mencoba untuk melihat  peran BUMDes Manekan yaitu pengelolaan unit kerja, mengelola sumber daya yang dimiliki dalam lingkup usaha, menyusun rencana kerja, menyusun laporan. Peran BUMDes tersebut lebih difokuskan ke peran BUMDes dalam pemberdayaan. Sehingga focus penelitian terdiri dari terpenuhinya kebutuhan dasar, akses terhadap layanan public, mampu untuk berpartisipasi aktif, kesadaran akan kekuatan dan kelemahan atas diri sendiri dan juga lingkungan, kemampuan untuk mengendalikan diri dan lingkungannya. BUMDes Manekan telah melakukan sebagian besar usaha untuk meningkatkan perekonomian masyarakat seperti pemberian modal usaha, namun masih terkendala dalam pengembangannya yang macet. Pengelolaan BUMDes tidak mempertimbangkan kesiapan masyarakat. Modal tersedia namun masyarakat tidak mampu karena tidak berdaya.
Upaya Penguatan Kapasitas Pamong di Kalurahan Condongcatur
Authors: Abdillah Ashar , Muhammad Adji Suradji
Published: June 2024

Kualitas layanan publik tidak terlepas dari kualitas aparatur yang memberikan layanan. Keterbatasan sumberdaya manusia dalam memberikan layanan publik di tingkat desa sangat ditentukan oleh berbagai. Penelitian ini bertujuan untuk mengetahui bagaimana Pemerintah Desa Condongcatur dalam  meningkatkan kualitas sumber daya manusia yang menjadi pamong untuk memberikan layanan public secara optimal. Dengan menggunakan jenis  penelitian kualitatif model Fenomonologi didukung oleh informan yang berkualitas mulai dari Lurah, Carik, Jogoboyo, Tatalaksana, Staf Kalurahan dan juga Pendamping Kalurahan. Selain informan yang berkualitas, peneliti juga menggunakan hasil observasi dan dokumentasi untuk mendukung analisis. Hasil penelitian menunjukkan bahwa strategi yang dilakukan oleh Pemerintah Kalurahan Condongcatur dilakukan melalui 4 tahap utama. Pertama melalui rekrutmen yang transparan dan akuntabel, kedua melalui Bimbingan Teknis penguatan tugas dan fungsi, ketiga melalui studi lanjut dan keempat melalui pola koordinasi yang intensif.
Краткая эколого-морфологическая характеристика Scolochloa festucacea (Willd.) Link (Poaceae) в северной части Европейской России
Authors: Бобров Юрий Александрович , Филиппов Дмитрий Андреевич
Published: June 2024

На основе собственных полевых исследований и анализа гербарных коллекций дана эколого-морфологическая характеристика крупного слабоизученного растения – Scolochloa festucacea (Willd.) Link (семейство Poaceae). На территории Европейского Севера России тростянка овсяницевидная растёт по берегам водораздельных и пойменных озёр, медленно текущих рек и их заводей, реже – на влажных и заболоченных лугах и приозёрных болотах. Для вида, согласно экологическим шкалам Д.Н. Цыганова, лимитирующими факторами макроклимата следует, по-видимому, считать баланс осадков и испарения и общую температуру, микроклимата – освещённость и богатство почвы минеральными солями. Экотопы в изученных сообществах с участием S. festucacea, находятся в условиях слабопеременного увлажнения, имеют влажность субстрата, колеблющуюся от сыро- до болотно-лесолуговой, незасолённые, бедные азотом, но довольно богатые минеральными солями с pH 4,5–6,5 почвы, с освещённостью, соответствующей полуоткрытым пространствам. Жизненная форма вида S. festucacea определена как подземностолонный недерновый травянистый многолетний поликарпик. Основу целостного растения образуют монокарпические побеги, после отмирания которых резид входит в состав сложного столона. Подземная часть растения содержит много почек, которые могут тронуться в рост при повреждении верхушки. Это позволяет растению быстро восстанавливать потерянную биомассу.
ФинансированиеРабота выполнена в рамках государственного задания Министерства науки и высшего образования Российской Федерации № 124032100076-2 (ИБВВ РАН) и № 123112700111-4 (БС УрО РАН).
The Greekness of the generation of the ʼ30s and the case of Thrassos Kastanakis
Authors: Θεολόγου Β.
Published: June 2024

Οι έννοιες της ελληνικότητας και του εθνισμού στη λογοτεχνία είναι άμεσα συνδεδεμένες με τη γενιά του 1930 και την περίοδο του μεσοπολέμου και εμπεριέχουν ουσιαστικά το γνωστό θέμα του δυϊσμού της εθνικής ταυτότητας αναφορικά με το παρελθόν και με τη Δύση. Εστιάζοντας λοιπόν στην έννοια της ελληνικότητας, στόχος τoυ προτεινόμενου άρθρου είναι να διερευνηθεί ο τρόπος με τον οποίο ο Θράσος Καστανάκης αποδίδει τα χαρακτηριστικά και την ιδιοσυγκρασία του Έλληνα, τη συμπεριφορά και τη νοοτροπία του μέσα και έξω από την πατρίδα, εξετάζοντας όμως ταυτόχρονα και την επιρροή που έχει το δυτικό περιβάλλον, καθώς και ο δυτικός τρόπος ζωής στη διαμόρφωση του χαρακτήρα και της προσωπικότητάς του.

The concepts of Greekness and nationism in literature are directly linked to the generation of the 1930s and the interwar period and essentially contain the well-known theme of the dualism of national identity in relation to the past and the West. Focusing therefore on the concept of Greekness, the aim of the proposed article is to investigate the way in which Thrassos Kastanakis depicts the characteristics and temperament of the Greek, his behaviour and his mentality inside and outside the homeland, while at the same time examining the influence of the Western environment and the Western way of life in shaping his character and personality.