bluuebunny/crossref_metadata_2025 huggingface dataset:
Characterization and early detection of hydrogen embrrittlement in offshore bolts using acoustic emission
Authors:   University of Warwick, Sabir Nokhaiz ,   University of Warwick, Billson Duncan ,   University of Warwick, Hutchins David A. ,   TWI Ltd (The Welding Institute), Grigg Stephen
Published: December 2022

In this project the non-destructive testing technique of acoustic emission testing will be used to determine the location of hydrogen embrittlement within offshore bolts. An initial testing plan has been provided which outlines that a fatigue test will be performed on the chosen bolt size and material. The obtained results will be used to link the fatigue data with the AE signals captured during testing and justify the choice of this NDT technique for detection of location of crack within the bolt. This will be later developed to detect cracks developed due to hydrogen embrittlement in high- strength steel bolts. To achieve this, a thorough literature review on hydrogen embrittlement and acoustic emission has been provided in this report along with the future plan for testing that will be used to gather experimental data which will justify this theory.
Investigation of background noise affecting ae data acquisition during tensile loading of frps
Authors:   Montan Universität (University of Leoben), Gfrerrer Maria ,   Montan Universität (University of Leoben), Wiener Johannes ,   Empa, Swiss Federal Laboratories for Materials Science and Technology, Brunner Andreas J. ,   Montan Universität (University of Leoben), Pinter Gerald
Published: December 2022

The method of acoustic emission (AE) allows the detection of damage initiation and growth in composites due to its high sensitivity. However, for the same reason, AE signal acquisition can easily be disrupted by ambient noise. A significant source of noise is the testing machine itself. In this contribution, the qualification of different types of testing machines to perform material testing in combination with AE measurements is investigated. For this purpose, quasi-static tensile tests of ±45° carbon fiber-reinforced epoxy specimens are conducted on a static, an electro-dynamic and a servo-hydraulic machine. Static and electro-dynamic machines in the used setup seem to have no influence on AE data acquisition. Contrary, AE data acquisition on the servo-hydraulic machine proves difficult. Measures, such as increasing the threshold for detection or using a highpass filter to reduce noise have a detrimental effect on data acquisition, since desired signals are discriminated as well.
Prospects on application of elastic metamaterials in acoustic emission sensing
Authors:   Office of Technical Inspection (UDT), Klimek Zbigniew ,   AGH University of Science and Technology, Packo Pawel
Published: December 2022

This paper discusses challenges, limitations and problems arising in currently employed acoustic emission testing systems, sensors and signal processing algorithms. Main factors influencing and compromising accuracy and reliability of the classically used methods are briefly analyzed. Next, metamaterials and their dynamic properties are outlined with the aim and focus on their potential in manipulating energy flow. Several applications of metamaterials in acoustic emission are presented that indicate their potential in acoustic emission. Finally, possibilities of designing a new type of sensor for acoustic emission using metamaterials is discussed. As a consequence, it is expected to increase sensitivity and accuracy of source localization with smaller number of sensors used during measurements.
Field-experiences of tracking plant’s xylem embolism formation with embedded acoustic emission sensors
Authors:   University of Zagreb, Oletić Dinko ,   University of Natural Resources and Applied Life Sciences,(BOKU), Rosner Sabine ,   University of Zagreb, Bilas Vedran
Published: December 2022

Plant physiology, forestry, and agriculture require novel field-deployable instruments for tracking plant’s hydraulic status, to enhance understanding of the strategies plants developed to cope with drought stress, enable tracking of damages caused by seasonal droughts, and to rationalize water expenditure used for precision-irrigation. Acoustic emission sensing (AE) is a promising indirect method of non-invasively tracking the cavitation-induced xylem embolism. We developed a lowpower embedded system enabling in-field 2,5 MHz AE acquisition, real-time sensor-response equalization, time-, and frequency-domain feature extraction, micro-SD storage and Sigfox wireless communication. The system is solar-powered and operates with commercial miniature piezoelectric transducers (Vallen). In this paper we show early results of our work-in-progress on outdoor testing on grapevine plants.
Artificial intelligence-based corrosion sensing and prediction for aircraft applications (AICorrSens)
Authors:   Johannes Kepler University Linz (JKU), Kralovec Christoph
Published: December 2022

Corrosion causes enormous damage to mechanical structures in many industrial sectors, and the aviation industry is no exception. To extend the lifetime of airframes without compromising safety, it is very important to have a clear picture of the state of corrosion (SoC) of the aircraft. Thus, it is essential to develop methodologies suitable for real-time monitoring of the SoC and subsequent reliable notification when a structure has been compromised by corrosion. Published results so far suggest that the ultrasonic (e.g. acoustic emission, guided waves) as well as electrochemical sensors (e.g. electrochemical noise, impedance spectroscopy) are suitable for monitoring aircraft-relevant corrosion but lack the technological readiness to be applied in commercial aircraft yet. A huge issue in achieving reliable monitoring systems is the correlation between corrosive phenomena and (typically) noisy sensor data. The AICorrSens project addresses these issues by developing a multisensor setup for monitoring the SoC based on ultrasonic, electrochemical, and environmental sensors coupled with AI algorithms. Training data shall be generated by performing accelerated corrosion tests with coupons and demonstrator parts equipped with sensors. Using AI for the subsequent data analysis, one can overcome operational noise, and thus, allow today’s corrosion detection methods onboard real- time evaluation of the SoC in terms of detection, localization, quantification, and typification. The ambition of the project is to transform the created continuous stream of data into classifications of the SoC that are intuitively understandable through a human-machine interface, including a qualified corrosion prediction by the AI models generated from test campaigns. The project results shall lead to increased aircraft safety and reliability and deliver a clear economic benefit for aircraft operators as it allows a switch from regular inspection intervals to condition-based maintenance. Funded by: Austrian Research Promotion Agency Program: Take Off, Call 2019 Consortium: CEST Competence Centre for Electrochemical Surface Technology (CEST), Johannes Kepler University Linz – Institute of Structural Light-weight Design (IKL), Danube University Krems – Department for Integrated Sensor Systems (DISS), Senzoro GmbH (SENZ). Project duration: 10/2020 – 09/2023. EWGAE 35, Ljubljana, Slovenia, 13th – 16th Sep. www.ewg
Development and validation of an ovine cesarean surgery model and rubric
Authors: Gibbons Philippa , Devine Elizabeth , Dutton David , Pulliam Tiffany , Anderson Stacy , Hunt Julie
Published: December 2022

Clinical skills are learned through deliberate practice with specific feedback. However, it is not possible to provide such experience to each student in food animal reproductive procedures (e.g., cesarean surgery). Aims of this study were to create an ovine cesarean surgery model to facilitate skill acquisition, to create a scoring rubric to assess performance, and to gather validation evidence for the model and rubric. A commercially available ovine manikin was modified using poured silicone to create suturable skin, muscle, and uterus containing a commercially available fetal lamb manikin that could be manipulated and delivered. A scoring rubric consisting of a 16-item checklist and 5 global rating scores (GRS) was created. Model was tested by veterinarians (n = 14, experts) and veterinary students (n = 16, novices) in a validation study that evaluated evidence in content, internal structure, and relationship with other variables (level of training). Most experts (93%) felt that the model would be helpful to teach procedural steps; also experts (100%) agreed that the model would improve students’ skill in performing cesarean surgery. Novices scored lower than experts on the checklist and total GRS, and novices’ surgical times were longer than experts’ times. Content evidence and relationship with other variables evidence supported validation of the model and rubric. Checklist reliability (alpha = 0.58) could be improved by increasing the number of items and further refining them.
Pemanfaatan Solar Cell Sebagai Sumber Energi Alternatif Untuk Fasilitas Bangku Taman Ruang Terbuka Hijau
Authors: Kango Riklan , Hadiyanto Hadiyanto , Suhaedi Suhaedi , Ihsan Ihsan
Published: December 2022

Sumber listrik fasilitas Taman Tiga Generasi yang merupakan Ruang Terbuka Hijau di Kota Balikpapan sangat tergantung pada sumber PLN sehingga mengakibatkan masalah krisis energi listrik. Selain itu, tidak semua area taman memiliki sarana dan prasaran seperti hal nya bangku tempat duduk pengunjung. Tujuan PkM ini menerapkan teknologi bangku elektrik dengan pembangkitan listrik solar cell untuk taman dan mengimplementasikan produk Teknologi Tepat Guna kepada Masyarakat berbasis solusi terhadap permasalahan mitra. Metode PkM ini memperhatikan protokol kesehatan dimana proses dilakasanakan secara langsung dan terbatas. Adapun tahapannya, yaitu: (1) Penerapan teknologi listrik solar cell untuk supplay listrik fasilitas taman; (2) Pelatihan oleh tim pengabdi kepada mitra perihal pengoperasian dan pemeliharaan produk bangku elektik bercatu daya solar cell; (3) Penyuluhan mengenai konservasi energi listrik bagi mitra. Hasil PkM ini menghasilkan produk bangku elektrik multifungsi sebagai tempat duduk, sebagi tempat pengisian daya perangkat elektronik handphone serta sebagai sumber penerangan area taman dengan catu daya berbasis panel surya. Kegiatan PkM sebagai bagian realisasi solar cell alternatif pembangkit listrik di Indonesia dalam rangka hemat energi listrik.
Kerukunan Umat Beragama dalam Bingkai Iman Kristen di Era Disrupsi
Authors: Simon Simon , Arifianto Yonatan Alex
Published: December 2022

Bangsa Indonesia menghadapi era di mana konflik horizontal kerap terjadi. Terlebih dalam era kemajuan digital dan era disrupsi yang memaksa manusia untuk menggunakan teknologi dalam berkomunikasi, berbisnis dan lain sebagainya.  Di era disrupsi ini banyak ujaran kebencian yang mudah diakses di dunia maya sehingga dapat mengancam persatuan di dunia nyata. Dengan menggunakan pendekatan studi literatur, tulisan ini bermaksud menjelaskan bagaimana orang Kristen berdampak dan menjadi pelaku aktif dalam menciptakan kehidupan yang rukun dan menjadi pelopor pemersatu perdamaian. Itu dapat dicapai bila orang Kristen mengupayakan kehidupan yang rukun dengan adanya aksi nyata di dalam lingkungan masyarakat maupun dalam komunitas media sosial yang sekarang disebut masa globalisasi di era disrupsi. Melalui  era disrupsi dan tantangannya orang kristen dapat memahami bahwa situasi dan kondisi apapun yang terjadi tetap memberikan kontribusi bagi kemajemukan bangsa Indonesia. Hal itu selaras dengan dasar Iman Kristen dalam kerukunan  yang selanjutnya dapat diaktualisasikan oleh orang Kristen dalam masyarakat di era disrupsi.
Peningkatan Keterampilan Mahasiswa melalui Pengoperasian Program Autocad
Authors: Darsini Darsini , Suprapto Suprapto
Published: December 2022

Autocad merupakan salah satu aplikasi yang mendukung pembuatan gambar pada bidang rekayasa desain. Aplikasi ini mampu mendesain gambar teknik, denah, bangunan dan obyek lainnya Yang menjadi persoalan adalah, bagaimana kita dapat memanfaatkan fasilitas-fasilitas yang disediakan Autocad tersebut secara terampil, sehingga mampu menjadikan keunggulan yang signifikan dibandingkan dengan menggambar manual. Tujuan program penerapan ipteks adalah (1) Untuk memberikan pengetahuan dan keterampilan tentang program pengolahan gambar (2) Untuk meningkatkan keterampilan mahasiswa dalam menyelesaikan tugas-tugas gambar dengan memanfaatkan program Autocad.  Metode yang dilakukan pada program penerapan Ipteks adalah pemberian teori dan praktek langsung yang sudah dituangkan dalam modul pelatihan. Selain itu juga dilakukan latihan-latihan gambar selama selama kegiatan berlangsung. Evaluasi dari program kegiatan penerapan iptek tentang peningkatan keterampilan mahasiswa univet melalui pengoperasian program autocad adalah bahwa pelatihan pengoperasian program autocad dapat memberikan pengetahuan dan bekal keterampilan pada diri mahasiswa dalam menyelesaikan tugas-tugas gambar yang diberikan oleh dosen dan adanya perubahan kompetensi (pengetahuan dan keterampilan) mahasiswa dalam menggunakan komputer. Hal ini terbukti dari rata-rata hasil latihan gambar dan nilai akhir yang dilaksanakan mahasiswa peserta pelatihan sebesar 75% yang sebelumnya mahasiswa masih awam dalam mengoperasikan program autocad.

Kata Kunci : Ketrampilan, Pengoperasian, Program Autocad.
Abmas-Td Pengolahan Nilai Mahasiswa dan Pelaporan Keuangan dengan Microsoft Excel
Authors: Darsini Darsini , Komariah Ainur , Wibowo Budi
Published: December 2022

Universitas Veteran Bangun Nusantara Sukoharjo terdiri dari 20 Program Studi yang tersebar di 6 Fakultas dengan jumlah dosen 162 orang. Setiap akhir semester semua dosen mempunyai tugas melaporkan nilai yang diperoleh mahasiswa ke program studi. Selain penilaian setiap dosen dalam melaksanakan kegiatan dan harus melaporkan penggunaan dana. Untuk membantu dosen dalam melaporkan penilaian dan menyusun laporan penggunaan dana atau laporan keuangan, maka kegiatan pelatihan komputer ini penting untuk dilaksanakan guna membantu meningkatkan keterampilan  dosen dan karyawan dalam mengoperasikan program microsoft ecxel. Metode yang dilakukan dalam pengabdian kepada masyarakat ini adalah memberian materi pelatihan dan langsung praktik di laboratorium komputer. Dari pemberian materi  selanjutnya dilakukan pelatihan soal-soal  serta evaluasi. Evaluasi dilakukan untuk mengetahui peningkatan pengetahuan dan keterampilan terhadap program microsoft ecxel. Microsoft ecxel merupakan program yang dapat digunakan untuk mengolah data dengan cepat, tepat dan akurat sesuai dengan permintaan pemakai. Hasil dari kegiatan pengabdian ini adalah adalah peningkatan keterampilan dosen dan karyawan dalam pengoperasian komputer dan sertifikat bagi peserta pelatihan. Berdasarkan hasil pre test dan post test terjadi peningkatan sebesar 48,94 % setelah adanya pelatihan komputer.
PKM Guru-Guru Bimbel Yayasan FORSIPMA Mawar
Authors: Parulian Dudi , Julaeha Siti , Mufti Abdul
Published: December 2022

Pengabdian kepada masyarakat ini bertujuan untuk mengimplementasikan pembelajaran berbasis teknologi informasi yang menggunakan online Aplikasi Mentimeter yang menggunakan jaringan internet sebagai pilihan alternatif kegiatan belajar mengajar dikarenakan pandemi Covid 19 dimana penyebaran wabah tersebut menyebabkan kematian yang paling tinggi dan mewajibkan untuk melakukan social dan physical distancing untuk memutus rantai penyebaran Covid 19. Aplikasi Mentimeter Meningkatkan pengetahuan Guru-Guru dalam hal pemanfaatan penyampain materi secara online dalam penggunaan Aplikasi Mentimeter pembelajaran. Meningkatkan keprofesionalan guru dalam penggunaan Aplikasi Mentimeter dalam pembelajaran di kelas.
Dalam hal ini penulis menggunakan Aplikasi Mentimeter sebagai media pembuatan Materi atau Soal-soal dengan pelajaran Matematika yang bertujuan untuk memahami cara membuat persentasi kepada siswa, agar pembelajaran lebih cepat atau up to date sesuai dengan kebutuhan. Sehingga kebenaran isi materi yang di sampaikan sangat berpengaruh pada kualitas nilai yang dihasilkan.
Peningkatan Keterampilan dan Kesejahteraan Masyarakat Pulau Kabung melalui Pelatihan Pembuatan Sirup Pala
Authors: Warsidah Warsidah , Minsas Sukal , Muliadi Muliadi , Aritonang Anthoni B , Apriansyah Apriansyah , Kushadiwijayanto Arie A. , Sofiana Mega SJ , Nurrahman Yusuf , Risko Risko , Nurdiansyah Sy. Irwan , Safitri Ikha , Helena Shifa
Published: December 2022

Pesisir Pulau Kabung merupakan wilayah Desa Karimunting Kabupaten Bengkayang yang berpenduduk sekitar 300 Kepala Keluarga dengan mata pencaharian utamanya adalah bernelayan. Kondisi perairan yang sangat beresiko karena cuaca buruk seperti gelombang kuat, tidak memungkinkan untuk melaut, sehingga menimbulkan kegiatan baru bagi masyarakat untuk berkebun dengan memanfaatkan lahan seadanya serta komoditas perkebunan yang berada di sepanjang bukit di pulau tersebut.

Selain kelapa dan cengkeh, buah pala merupakan komoditas perkebunan yang banyak terdapat di wilayah ini. Pelatihan pengolahan sirop dari daging buah pala pada masyarakat Pulau Kabung adalah untuk meningkatkan keterampilan dan kesejahteraan masyarakat Pulau Kabung yang sebelumnya telah melakukan pengolahan sederhana pada buah pala dengan mengeringkan biji serta membuat manisan pala. Pelatihan dilakukan dengan cara pengolahan langsung buah pala di depan masyarakat pulau Kabung yang sekaligus sebagai peserta pada kegiatan ini.

Kegiatan ini dihadiri oleh 50 orang peserta yang merupakan ibu-ibu rumah tangga dan remaja wanita.  Berdasarkan kuisioner sebelum kegiatan dimulai menunjukkan sebanyak 40% sudah pernah mengenal dan membaca tentang pengolahan sirop pala, sedangkan sebanyak 30% peserta telah pernah membuat olahan sirop secara sederhana dari daging buah pala. Kemudian pada evaluasi yang dilakukan setelah kegiatan menunjukkan 80% peserta telah mampu membuat sirop Pala yang baik dengan indikasi sirop yang dihasilkan konsistensinya kental, rasanya enak dan tahan disimpan dalam 2-3 minggu.
Pelatihan TOEFL Dengan Pendekatan CIRC Untuk Mencapai Nilai Ideal Di Masa Pandemi
Authors: Syamsurrijal Syamsurrijal , Miswaty Titik Ceriyani , Hadi Muhammad Zaki Pahrul
Published: December 2022

Pengabdian kepada masyarakat ini bertujuan untuk memberikan tidak hanya pengetahuan tetapi juga kesiapan untuk menghadapi ujian TOEFL (Test of English as Foreign Language) bagi mahasiswa dan dosen di Nusa Tenggara Barat. Pengabdian kepada masyarakat ini dilaksanakan secara online dengan meggunakan teknologi zoom sebagi media pembelajaran selama satu bulan. Masyarakat sasaran adalah masyarakat kampus yaitu mahasiswa dan dosen dari berbagai perguruan tinggi Nusa Tenggara Barat. Metode yang digunakan dalam pengabdian kepada masyarakat ini adalah dengan metode Cooperative Integrated Reading and Composition (CIRC) yaitu peserta dibagi menjadi beberapa kelompok,  kemudian diberikan tips dan strategi dalam menjawab tes TOEFL. Masing-masing kelompok berdiskusi dan bertukar pikiran dalam menjawab semua soal-soal dalam TOEFL. Biaya kegiatan pengabdian kepada masyarakat ini sepenuhnya bersumber dari tim pelaksana pengabdian. Setelah pelaksanaan kegiatan pengabdian kepada masyarakat ini, peserta memiliki kemampuan dan kesiapan serta nilai yang cukup significant dari sebelumnya.
The Pointe de Saint-Colomban site (Carnac, France): redefinition of the Colombanian culture, in the framework of the European Acheuleans
Authors: GUIBERT Justin , BON François , FORESTIER Hubert
Published: December 2022

The technocomplexes of the European Lower Palaeolithic are often attributed to the so-called Acheulean. Through several prehistoric sites located in the South Armorican coast, a distinct and contemporary Acheulean cultural facies was proposed at the end of the 1980s. Based on the study of lithic industries at the Pointe de Saint-Colomban site in Carnac, it is called “Colombanian” and is characterised by the coexistence of macro-tools on pebbles and a variety of small tools on flakes. As is often the case, the presence or absence of handaxes is a determining criterion to qualify a lithic assemblage as “Acheulean”. However, this categorial attribution loses all meaning when a technological analysis is conducted. Consequently, we used a techno-structural approach to illustrate the technological and functional variability of lithic artefacts from the early occupations of the Pointe de Saint-Colomban site (layers 5, 6 and 7). The application of the “chaîne opératoire” principle allowed us to reveal the processes and objectives of the lithic production system and to establish a homogeneous reading grid among the different pieces of the assemblage. We present here the data from our study which clearly shows that the “Colombanian” is no longer valid and that we need to initiate a change of definition. The lithic industry of the Pointe de Saint-Colomban site is dominated by the concept of flaking (débitage) represented by numerous cores and flake tools. The concept of shaping (façonnage) is illustrated by only two sandstone pebble tools. All this highlights the diversity and originality of the lithic technical systems of the Lower Palaeolithic of the Atlantic Armorican coastline.
A new ‘grylloblattodean’ genus and species (Insecta: Polyneoptera) from the middle Permian Salagou Formation (France)
Authors: Nel André , Kundura Jean-Paul , Pouillon Jean-Marc , Garrouste Romain , Jouault Corentin
Published: December 2022

Lodevoisadia coheni gen. et sp. nov. is described as the ninth species of ‘Grylloblattodea’ from the middle Permian of the Salagou Formation, near Lodève town (France). It is currently not reasonable to place this species into a specific family, even though it seems to share most characters with the small family Tunguskapteridae. The lack of phylogenetic analysis and the current poor delineation of the majority of the grylloblattodean families (lacking synapomorphies) render any attribution of new taxa to a particular family often uncertain.
Association analysis of apoptosis-related gene caspase3, Integrin a subunit 1 and glutathione sulfur transferase M1 gene polymorphisms and susceptibility to gastric cardia carcinoma
Authors: Wang Rui , Zhang Zetian , Li Duo , Wu Na , Peng Zhao
Published: December 2022

Background: To explore the association of polymorphisms of apoptosis-linked genes caspase3 (CASP3), integrin a subunit 1 (ITGA1), glutathione sulfur transferase M1 (GSTM1) with susceptibility to gastric cardia carcinoma (GCC). Methods: From February 2016 to March 2018, selection of 113 GCC patients was as the gastric cancer (GC), and selection of 75 patients without gastric disease was as the control. Detection of CASP3, ITGA1 and GSTM1 gene polymorphisms in patients' peripheral blood was to analyze their association with GC. Division of the GC was into the good prognosis and the unpleasing prognosis in the light of the survival of patients after surgery of 3 years, and the predictable value of gene polymorphisms of CASP3, ITGA1 and GSTM1 in GCC patients was analyzed. Results: CASP3 gene rs12108497 locus, ITGA1 gene rs1862610 locus and GSTM1 genotype of the GC and the control were in accord with Hardy-Weinberg equilibrium (P > 0.05); The detection rate of CASP3 gene rs12108497 locus TC/CC type, ITGA1's gene rs1862610 locus AC/AA type and GSTM1 blank type in the GC was elevated vs. the control (P < 0.05); Logistic regression analysis manifested smoking, anxiety, helicobacter pylori infection, family history of gastrointestinal tumor, combination with chronic gastric disease, CASP3 gene and GSTM1 gene polymorphism were risk factors for GC (P < 0.05); Stratification was in the light of individual smoking status, discovering that the detection rates of CASP3 gene rs12108497 locus TC/CC type, ITGA1 gene RS1862610 locus AC/AA type and GSTM1 blank type in the smoking were crucially augmented vs. the smoking (P < 0.05); The detection rates of CASP3 gene rs12108497 locus TC/CC type, ITGA1 gene rs1862610 locus AC/AA type and GSTM1 blank type in the death were augmented vs. the survival (P < 0.05); Combined detection of CASP3, ITGA1 and GSTM1 gene polymorphisms was provided with predictive value for GCC's prognosis (P < 0.05). Conclusions: CASP3 and GSTM1 genes are susceptibility genes for GCC, which might be associated with the occurrence of GCC in smoking patients, and the joint detection of multiple genes is provided with predictive value for patients' prognosis.
Control and Inner exile of female educators during the Dictatorship of Primo de Rivera
Authors: Robles Sanjuan Victoria , Rabazas Moreno Teresa
Published: December 2022

The aim of this article is to study the consequences of Primo de Rivera’s dictatorship on women educators, focusing our interest on repression and internal exile during this totalitarian period. Our study takes as its starting point the conceptual debate on inner exile as a consequence of totalitarian regimes and their repercussions on female educators. The analysis of the research shows the mechanisms of reaction of some female teachers to the control, local despotism and punitivism that was exercised over the teaching profession during this regime. At the same time, it has allowed us to demonstrate with some examples the oppressive context of the female teaching collective, contributing to the reconstruction of some trajectories during the inner exile of two teacher trainers: Gloria Giner and Concepción Alfaya.
Adjacency-Based Facility Layout Optimization for Shipyards: A Case Study
Authors: Tamer Salim , Barlas Baris , Gunbeyaz Sefer A. , Kurt Rafet E. , Eren Sukru
Published: December 2022

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A shipyard located in Yalova, Turkey, with an annual processing capacity of 50,000 tons of steel, is studied to improve the layout to increase the production efficiency. The material and personnel traffic inside the shipyard is complex, considering the nature of the shipyards. Therefore, an adjacency-based optimization procedure has been adopted in this study since this procedure allows quantitative evaluation of these aspects. Systematic layout planning (SLP) and graph-theoretical approach were used to generate 12 alternative layouts. Then, the best alternative layout was selected using the efficiency rate method. This study demonstrates the use of SLP and graphic-theoretical approach in a maritime context and utilizes the efficiency rate method to compare the alternative layouts, which are between 48.91% and 73.91% efficiencies, respectively. This study is a novel contribution to the literature in terms of demonstrating this methodology for shipbuilding applications, and practical applications for the industry can improve the industry to improve the efficiency of their operations.

Introduction

In parallel with the increase in global economic growth and technological developments, new ships are needed for marine transportation, energy, security, fishing, etc. This need triggers a globally competitive environment for the production of vessels in a cheap and efficient manner, which directly affects the shipbuilding industry and shipyards (Odabasi 1993). The alignment of the production departments in the shipyard is critical for productivity. The shipyard should be optimized and designed as an efficient system to minimize unnecessary material and personnel traffic. On the other hand, the majority of shipyards are poorly designed. Facility layout deals with the placement of the production departments based on their relative relationship, and facility layout design aims to streamline the workflow and increase productivity (Muther & Hales 2015). Dixit et al. (2020) describe the facility layout as a physical arrangement of departments with a focus on workflow across the system to achieve highest operational efficiency at the lowest cost. Facilities layout is fundamental to shipyard efficiency. To address this gap in the literature, this paper examines the application of systematic layout planning (SLP) and graph-theoretical approach to the optimization of a specific facility layout.
Sexual harassment and coercion in German academia: A large-scale survey study
Authors: Hoebel Merle , Durglishvili Ana , Reinold Johanna , Leising Daniel
Published: December 2022

We surveyed a large sample (N = 6,217) of students and employees at a German university regarding their experiences as (potential) targets of sexual harassment and/or coercion (SH/C). Participants were asked specific questions depending on whether they had been targets of SH/C themselves, knew someone who had been affected or said they had no such experiences. Pre-registered analyses showed that women were assumed to become targets more often, and actually did become targets much more often (26.7%) than did males (4.7%; odds ratio: 7.45). Men more often had no first- or second-hand knowledge of any SH/C incidents (odds ratio: 1.75). Contrary to what participants assumed they would do if they became targets, only a very small percentage of such experiences were actually reported using the available channels. Most participants who experienced but did not report SH/C said they did not expect that doing so would lead to any consequences. Greater offence severity was associated with a stronger wish to avoid emotional distress by not reporting. Furthermore, reporting often times did not lead to any significant consequences in the majority of cases. Complaint systems against sexual harassment and coercion in academia may be largely dysfunctional. Practical implications are discussed.
Simpulum metálico tardoantiguo con mango inscrito del museo histórico de Baena: nuevo testimonio arqueológico del cristianismo en la campiña cordobesa
Authors: Morena López José Antonio
Published: December 2022

The Historical Museum of Baena preserves among its funds a unique metal piece whose archaeological context and specific place of origin are unknown, although it apparently comes from a site located in the municipality of Castro del Río, near the Roman city of Ipsca, already in the term of Baena. It consists of a bronze saucepan or simpulum, from the late antiquity, whose handle has an inscription engraved with the name of its owner, a well-known Christian invocation; it also contains two separate drawings of a krater and a chrismon. It constitutes further evidence of the roots of Christianity in the province of Córdoba.

El Museo Histórico de Baena conserva entre sus fondos una singular pieza metálica de la que se desconocen su contexto arqueológico y lugar concreto de procedencia, aunque al parecer procede de un yacimiento situado en el término municipal de Castro del Río, cercano a la ciudad romana de Ipsca, ya en el término de Baena. Consiste en un cazo o simpulum de bronce, de época tardoantigua, cuyo mango presenta una inscripción grabada con el nombre de su propietario, una conocida invocación cristiana; además contiene sendos dibujos de una cratera y un crismón. Constituye una evidencia más del arraigo del Cristianismo en la provincia de Córdoba.
De cuerpos militares de élite a tropas de ornamentación ceremonial. Una aproximación crítica a las Scholae Palatinae
Authors: Ruiz Sánchez Antonio
Published: December 2022

During the 3rd and 4th centuries we witness a marked militarization of the socio-administrative framework of the Roman Empire. From the irruption at the institutional level of the military elites to the very morphology of the official buildings, which tried to imitate the distribution of the castra, this situation became a manifest reality. Naturally, in this new military context, the organization of the armed forces was far from the one that had been in force centuries ago. Among the most striking novelties, in view of the study at hand, one in particular stands out: the revaluation of the arms service in the imperial palace. This is where we must place the activity of the scholae palatinae, elite cavalry regiments of 500 men in charge of protecting the emperor and his family.The trajectory of the scholae is a reflection of the sociopolitical evolution of the Lower Roman Empire, especially in its Eastern half. The development of these contingents reveals a series of problems that suggest a projection that goes far beyond the sphere of war. In this sense, this paper delves into the role played by these horsemen and addresses the reasons that explain their conversion from elite warriors to forces whose scope of action was practically exclusively restricted to ceremonial ornamentation from the 5th century.

Durante los siglos III y IV asistimos a una acusada militarización del armazón socio-administrativo del Imperio Romano. Desde la irrupción en el plano institucional de las élites castrenses hasta la misma morfología de los edificios oficiales, que trataban de imitar la distribución de los castra, esta situación se convirtió en una realidad manifiesta. Como es natural, en este nuevo contexto marcial la organización de las fuerzas armadas distaba mucho de aquella que había estado vigente siglos atrás. Entre las novedades más llamativas, de cara al estudio que nos ocupa sobresale una en especial: la revalorización del servicio de armas en el palacio imperial. Es aquí donde debemos situar la actividad de las scholae palatinae, regimientos de caballería de élite de 500 hombres encargados de la protección del emperador y su familia. Su trayectoria constituye un reflejo de la evolución sociopolítica del Bajo Imperio Romano, especialmente en oriente. Y es que el desarrollo de estos contingentes revela una serie de problemáticas que sugieren una proyección que va mucho más allá de la esfera bélica. En este sentido, el presente trabajo profundiza sobre el papel de estos jinetes y aborda los motivos que explican su conversión desde guerreros de élite especialmente preparados para entrar en combate a fuerzas cuyo ámbito de acción quedó restringido prácticamente de forma exclusiva a la ornamentación ceremonial desde el siglo V.
PTERYGES DA PARATA ALTOMEDIEVALI DALLA SARDEGNA.
Authors: Serra Paolo Benito
Published: December 2022

Varios pteryges de bronce con colgantes de cadenas lanceoladas, conservados en los Museos Arqueológicos de Cerdeña, son actualmente objeto de mucho debate en cuanto a su cronología y su uso. Faltan datos objetivos sobre su procedencia, sobre los métodos de descubrimiento y – sobre todo – sobre los materiales de los contextos relativos. La mayoría de los pteryges son el resultado de investigaciones ocasionales realizadas durante el siglo XIX en zonas del interior de Cerdeña, en correspondencia con estructuras prehistóricas y nurágicas reutilizadas en época romana y bizantina así como en algunos casos en contextos funerarios desmembrados de cementerios desenterrados en los centros urbanos de Lanusei y Gadoni. A falta de datos objetivos de excavación, se han examinado numerosos monumentos de la época imperial romana, especialmente los relacionados con el retrato militar funerario de los primeros siglos, que ofrece útiles elementos de reflexión. Se observó por tanto que los pteryges en cuestión de Cerdeña son descendientes directos de los pteryges de cuero con correas decoradas con tachuelas metálicas y lanceoladas de la época imperial romana, ampliamente atestiguadas en las estelas de los soldados siempre representados frontalmente (stehende Soldaten) con equipo personal. Un ejemplar de una localidad no especificada de Nurri ya en la colección Goüin y ahora conservado en el Museo Arqueológico Nacional de Cagliari documenta su uso continuado durante el siglo IV: este ejemplar de la colección Goüin está datado por una moneda de Constantino el Grande que actúa como colgante en la cadena mediana con nueve eslabones a diferencia de los restantes originales de 23 y 25 eslabones respectivamente que están rematados por láminas bipartitas lanceoladas. El floruit de los otros pteryges se situará en el lapso de tiempo comprendido entre el siglo VII y VIII d. C., esto es, en correspondencia con la progresiva concentración de la riqueza territorial en manos de los militares limitaneos, en particular en las zonas internas de la isla. De hecho, los pteryges son sin duda complementos del armamento de los soldados-colonos que, con ocasión de los desfiles militares, podían exhibir los signos distintivos del estatus y preeminencia social alcanzados. En la actualidad, dada la ausencia de datos arqueológicos objetivos y definitivos, parece plausible atribuir los pteryges examinados al arco cronológico altomedieval, entre el siglo VII y VIII d.C., a partir de las sugerencias ofrecidas no sólo por los colgantes de las cingula representados en las estelas funerarias de los soldados romanos de los primeros siglos del imperio; sino también y sobre todo por los hallazgos desenterrados en las tumbas de la parroquia de Lanusei, en el centro urbano de Gadoni y en la "laura" de los monjes de Sos Eremos en la campiña de Fonni
Un análisis sobre la dimensión ética y soteriológica de la pobreza y la riqueza en la obra de Hilario de Poitiers
Authors: Alba López Almudena
Published: December 2022

Hilario de Poitiers trata de manera tangencial la relación del hombre con los bienes materiales en varias de sus obras. En su reflexión sobre estas cuestiones, encontramos que las variables de riqueza y pobreza trascienden su significado puramente material para denotar estados espirituales de la humanidad en relación con el cambio de paradigma que se opera a raíz de la encarnación. Exploraremos la exégesis del obispo de Poitiers en torno a episodios tan significativos para comprender el tema abordado como el concepto de pobreza de espíritu emanado de la primera bienaventuranza, la parábola del joven rico y el relato del pobre Lázaro, así como otros motivos bíblicos relacionados con los bienes y la justa retribución en el mundo sensible y en el más allá.
Cold cap glass-melt migration for radioactive waste vitrification at the Hanford site
Authors:   , Rigby Jessica C
Published: December 2022

With public and environmental pressure to clean-up the 200,000 m3 of radioactive wastes at the Hanford site, WA, USA, in a timely manner, many pathways to efficient processing of the wastes are being explored. One avenue, rife for exploration, is the waste feed-to-glass transition that occurs within a “cold cap” layer inside the melters, used to vitrify the wastes into stable glass wasteforms, for long-term immobilisation of the radioactive isotopes. Foaming beneath the cold cap, caused by the trapping of evolving gases in the glass-forming melt, can restrict heat-transfer from the glass melt to the reacting feed, thus reducing the efficiency of the melters, and the clean-up project. For a high-foaming, high-iron waste feed, HLW-NG-Fe2, a series of laboratory-scale representations of the cold cap were examined for the original feed, a reduced iron raw material (FeC2O4·2H2O), as well as added sucrose, graphite, coke, formic acid and HEDTA. The FeC2O4·2H2O raw material reduced foaming by 50 ± 2%, with minimal change to the final glass structure. Graphite and coke were most effective additives in foam reduction, reducing foaming by 51 ± 3 and 54 ± 3%, respectively. The effect of the reductants on the redox behaviour of Fe, Cr, Mn and Ce with temperature was explored, as well as the contribution to O2 evolution. Manipulation of the structure of the iron in the melt influenced the level of precipitation of Fe, Mn, Cr and Ni -bearing spinel crystals. The final graphite and coke glasses had Fe2+ content above the contract limit, and a structural change identified in most of the glasses, requiring further examination, appears to influence the chemical durability and glass transition temperature. Evidence is presented to suggest adoption of the reductants is feasible for mitigation of excessive foaming, pending further optimisation, although thus far, there is no indication that they offer improved melting rates.
Effect of probiotic therapy on periodontal tissues and intestinal mucosa of rats with ligature-induced periodontitis
Authors: Rodrigues Pedro Henrique de Carli , Rosa Ana Carolina Rodrigues da , Pasqualotto Laís Fernanda , Pandini Jordana Heidemann , Leite Marcela Aparecida , Brancalhão Rose Meire Costa , Amorim João Paulo Arruda , Nassar Leonardo Maso , Nassar Carlos Augusto , Nassar Patricia Oehlmeyer
Published: December 2022

Introduction: As periodontitis is caused by dysbiotic biofilm, it is believed that therapy with probiotics can act to control the mechanisms of adhesion and colonization, competing with invading microorganisms. Objective: Evaluate probiotic therapy effect on periodontal tissues and intestinal mucosa of rats with ligature-induced periodontitis. Methods: 32 Wistar rats were divided into four groups (n=8): Control Group (CG); Periodontal disease (PD); Probiotic (PROB); PD + probiotic (PDPRO). PD and PDPRO received a ligature over the first lower molars and PROB and PDPRO the probiotic Lactobacillus acidophilus based were given orally for 44 days. The animals were euthanized and the blood was collected for evaluation of triglyceride and cholesterol concentrations. The hemimandibles were collected for histomorphometric and radiographic analysis. The duodenum was removed for morphological evaluation and gingival tissue around the molars was collected for analysis of IL-17. Results: The ANOVA one-way test was used followed by Tukey Test. PDPRO had a significantly lower bone loss than the PD (p<0.05) and a smaller number of osteoclasts on PDPRO when compared to the PD. As for IL-17, there was a decrease in the PDPRO when compared to the PD. The histomorphometry of the duodenum showed that there was a significant increase in the width of the villi in PROB only. Conclusion: The therapy with probiotics was effective to avoid the development of periodontitis by reducing alveolar bone loss and inflammation modulation and increasing the width of the duodenum villi, which may help to restabilize the balance of the gastrointestinal tract.
Sources of validity evidence in the assessment of perceived motor competence in Brazilian schoolchildren
Authors: Cavalcante Wivianne Abreu , Palma Bartira Pereira , Feitoza Anderson Henry Pereira , Peixoto Evandro Morais , Cattuzzo Maria Teresa
Published: December 2022

Introduction: The judgment a child makes about his/her competence in the motor domain is known as perceived motor competence, a key element in building the child's healthy behavior; a Pictorial Scale of Perceived Movement Skill Competence (PMSC) seems to be a suitable perceived motor competence’s assessment, but its validity needs to be evaluated. Objective: To examine the internal structure, the convergent validity, and the reproducibility of the PMSC. Methods: The sample comprised 187 Brazilian healthy schoolchildren (9.6 years ± 0.8); it was applied to the questionnaires PMSC and the Self-Perception Profile for Children scale. Results: PMSC's confirmatory factor analyses indicated adjustment indexes classified as adequate for a two-factor model; there were satisfactory reliability indices (Cronbach’s alpha: 0.654 and 0.652 for locomotion and object control sub domains, respectively); convergent validity (r=0.41 and r=0.56, p<0.001, for locomotion and object control sub domains, respectively). Conclusion: These results contribute to the accumulation of sources of evidence for the PMSC as a valid tool for perceived motor competence assessment in a local and global context.
Belief in just deserts regarding individuals infected with COVID-19 in Japan and its associations with demographic factors and infection-related and socio-psychological characteristics: a cross-sectional study
Authors: Murakami Michio , Hiraishi Kai , Yamagata Mei , Nakanishi Daisuke , Miura Asako
Published: December 2022

Prejudice related to the coronavirus disease 2019 (COVID-19) is a social issue worldwide. A possible psychological factor that promotes prejudice is the belief in just deserts (BJD) regarding individuals infected with COVID-19 (i.e., the belief that the infected individual deserves to be infected). The BJD is based on the belief in immanent justice. It is reportedly higher in Japan than in other countries. Therefore, we conducted a cross-sectional study to investigate the BJD among Japanese individuals and clarify its associations with demographic factors or infection-related and socio-psychological characteristics. To this end, we conducted an online questionnaire survey in Japan from August 7–8, 2020, with 1,207 respondents aged 20–69 years. We performed screening to exclude inappropriate responses. We investigated the association between the BJD and demographic factors such as gender and age. We also investigated the association between the BJD and infection-related and socio-psychological characteristics, including risk perception of COVID-19 infection and human rights restrictions (i.e., the degree of agreement with government restrictions on individuals’ behavior during emergencies). Among the surveyed items, human rights restrictions showed a strong association with BJD, followed by risk perception of COVID-19 infection. Men had a slightly higher BJD than women. Our study is significant in that it is the first to investigate the items associated with the BJD, thereby providing foundational information for revising individual perceptions of justice related to COVID-19 and solving prejudice-related issues.
Learners' Attitude towards Distance Education Programme: Case of Bachelor Program in Agriculture of Bangladesh Open University
Authors: Alam Md. Jahangir , Pervez A. K. M. Kanak , Amin Md. Ruhul , Sheikh Md. Mohiuddin , Bhuiya Rejvi Ahmed
Published: December 2022

The study aimed to explore learners' attitudes toward 'the Bachelor of Agriculture Education (BAgEd) distance education program' and to show its relationship with the selected socio-economic characteristics of the learners. The target population for this study were learners at different BAgEd Study Centers of Bangladesh Open University BOU). Data collection was conducted from June 15, 2020, to April 30, 2022, by the survey through Google form in the web link. Random sampling was used from 438 learners who participated in the study out of 1750 learners. The findings show that around  57.3% of participants stayed in earlier stages in the innovation-decision process related to learners' attitude toward BAgEd distance education (no knowledge, knowledge, persuasion stages). About 42.7% were in later stages (decision, implementation and confirmation). A large portion (22.2%) of the learners think that after acquiring BAgEd degree, one may apply earned knowledge in own service field. On the other hand, only eleven participants think combining web-based and traditional methods in distance education can help learners access higher education. Out of ten selected characteristics of the learners, only one characteristic, family member, showed a no relationship with their attitude towards the BAgEd distance education program. Six of the significant characteristics, such as earning members, training, organizational participation, cosmopoliteness, uses of e-resources and creativity with correlation at 0.01. On the other hand, three independent variables, such as an academic semester, age and educational qualification, are significant at 0.05.