bluuebunny/crossref_metadata_2025 huggingface dataset:
PERENCANAAN STRUKTUR ATAP RANGKA RUANG BERBENTUK BRACED BARREL VAULT UNTUK HANGGAR PESAWAT KOMERSIAL
Authors: Meillyta Meillyta , Munawir Munawir , Siddiq Ilham Munawar
Published: June 2024

Pertumbuhan ekonomi Indonesia telah ikut mendorong tumbuhnya industri transportasi penerbangan, sehingga dibutuhkan fasilitas perbaikan dan perawatan pesawat, yakni hanggar di setiap bandara, Tulisan ini merupakan sebuah perencanaan bangunan hanggar yang menggunakan struktur baja rangka ruang untuk menampung sebuah pesawat Boeing 747-400, yang memiliki lebar 64,4 m, panjang 70,7 m, dan tinggi 19,4 m. Manfaat pereneanaan ini adalah untuk menentukan bentuk rangka atap, desain profil rangka baja dan sambungan ball joint dan desain base plate untuk hanggar tersebut, serta menjadi modul untuk pereneanaan struktur atap space frame dengan sambungan ball joint dimasa yang akan datang. Desain dan evaluasi struktur ini menggunakan program SAP2000 dengan mengaeu pada SNI-03-1729-2002 dan AISC-LRFD. Hasil dari pereneanaan ini adalah struktur space frame tipe braced barrel vault berdimensi 120 x 100 m setinggi 30 m. Struktur space frame terdiri dari 4800 batang Rangka Lengkung Bawah berukuran Circular Section Steel (CSS) 250,00 x 45,00; 4941 batang Rangka Lengkung Atas berukuran CSS 114,3 x 4,78; 2379 batang Rangka Bagi Atas berukuran CSS 76,3 x 3,2; 4819 batang Rangka Bagi Bawah berukuran CSS 114,3 x 3,5; 19520 batang Rangka Redundant berukuran 165,20 x 30,00; 5022 batang Rangka Dudukan Gording berukuran CSS 237,00 x 70,00; 4941 batang Rangka Gording Melintang berukuran CSS 240 x 70,00; dan 4880 batang Rangka Gording Memanjang berukuran C 150 x 75 x 4,5. Defleksi maksimum struktur yang terjadi adalah 10,19 em di tengah bentang. Sambungan menggunakan 9902 buah balljoint berdiameter 28 em. Rangka atap ditumpu ke lantai beton dengan base plate berdimensi 2000 x 1800 x 210 mm menggunakan 30 buah angkur berdiameter 45,6 mm yang ditanam sedalam 1055 mm. Berdasarkan hasil pereneanaan yang dilakukan, struktur rangka ruang tersebut aman dan desain ini dapat dijadikan sebagai pedoman pembangunan hanggar.
PENGARUH JUMLAH SIKLUS TERHADAP KEAKURATAN HASIL PERHITUNGAN STRUKTUR MENGGUNAKAN METODE CROSS (DISTRIBUSI MOMEN)
Authors: Munawir Munawir , Rismaliza Rismaliza
Published: June 2024

Desain struktur merupakan faktor yang sangat menentukan untuk menjamin kekuatan dan keamanan suatu struktur bangunan. Gaya-gaya dalam dari sebuah struktur harus mampu ditahan oleh elemen struktur yang direncanakan. Metode yang digunakan adalah metode distribusi momen (Cross) dan dianalisis dengan menggunakan software SAP2000. Metode Cross, selain dibandingkan keakuratannya terhadap hasil SAP2000 juga ditinjau keakuratan hasil perhitungan antar siklus, dalam hal ini gaya dalam yang timbul pada portal. Beban yang bekerja pada portal dibatasi untuk beban mati dan beban hidup berdasarkan SNI 1727-2013 dan kombinasi bebannya disesuaikan dengan SNI 03-2847-2013. Metode penelitian yang dilakukan adalah perhitungan tabel distribusi momen yang akan menghasilkan momen ujung. Hasil momen ujung digunakan untuk perhitungan gaya dalam dan dibandingkan dengan hasil SAP2000. Adapun hasil selisih perbandingan antara metode Cross dan SAP2000 terkait gaya dalam berkisar: 3,70% - 27,73% untuk momen maksimum, 0,00% - 8,17% untuk gaya geser dan 0,42% - 9,23% untuk gaya normal. Sedangkan tingkat keakuratan perbandingan hasil perhitungan antara jumlah siklus dengan SAP2000 dimisalkan momen akhir pada elemen BF balok lantai 2, pada siklus 1 persentase keakuratan sebesar 92,80%, kemudian pada siklus ke-2 terjadi penurunan dengan nilai 91,28%, pada siklus ke-3 kembali mengalami kenaikan dengan nilai 91,90%, pada siklus ke-4 terjadi penurunan dengan nilai 91,67%, pada siklus ke-5 terjadi kenaikan dengan nilai 98,26%. Penurunan dan kenaikan keakuratan siklus terus berlangsung sampai siklus ke-10 dan mencapai keseimbangan muali dari siklus ke-11 dan 12 dengan tingkat keakuratan sebesar 91,75%. Berdasarkan hasil perhitungan tersebut dapat disimpulkan bahwa metode Cross dapat dijadikan acuan untuk analisis struktur sebagaimana SAP2000, terutama untuk struktur portal yang sederhana.
PENGARUH JENIS SEMEN TERHADAP PERKEMBANGAN KUAT TEKAN BETON DENGAN MENGGUNAKAN BAHAN TAMBAHAN SIKAMENT NN 1,5%
Authors: Munawir1, Munawir , Khalid Khalid
Published: June 2024

Beton merupakan salah satu bahan konstruksi bangunan. Campuran beton terdiri dari semen, air, agregat dan bahan tambah bila diperlukan. Material semen dalam beton sangat penting dikarenakan semen berfungsi sebagai bahan pengikat antara agregat kasar dan agregat halus. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan semen Portland Cement Composit (PCC) dan semen Tipe I diproduksi oleh semen Andalas terhadap kuat tekan beton berdasarkan umur beton pada campuran beton dengan nilai Faktor Air Semen (FAS) 0,50 dan 0,55. Perencanaan campuran beton menggunakan metode American Concrete Institute 211.1-91. Ukuran maksimum agregat adalah 31,5 mm. Benda uji yang digunakan pada penelitian adalah silinder beton berdiameter 15 cm dan tinggi 30 cm. Pada penelitian ini umur pengujian kuat tekan adalah 3, 7, 14, 21 dan 28 hari dengan FAS 0,50 dan 0,55. Jumlah sampel untuk semua FAS pada setiap pengujian kuat tekan beton adalah 30 buah benda uji untuk masing-masing tipe semen. Berdasarkan hasil pengujian kuat tekan rata-rata beton FAS 0,50 yang menggunakan semen tipe I untuk umur 3, 7, 14, 21 dan 28 hari berturut-turut adalah sebesar 193,34 kg/cm2, 203,72 kg/cm2, 229,18 kg/cm2, 248,99 kg/cm2 dan 272,57 kg/cm2. Sedangkan Untuk semen PCC pada umur yang sama kuat tekannya adalah sebesar 139,58 kg/cm2, 169,77 kg/cm2, 202,78 kg/cm2, 220,69 kg/cm2 dan 249,93 kg/cm2. Untuk FAS 0,55 yang menggunakan semen tipe I untuk umur 3, 7, 14, 21 dan 28 hari berturut-turut adalah sebesar 182,97 kg/cm2 , 202,78 kg/cm2, 218,81 kg/cm2, 235,79 kg/cm2 dan 267,85 kg/cm2. Sedangkan Untuk semen PCC pada umur yang sama kuat tekannya adalah sebesar 149,02 kg/cm2, 169,77 kg/cm2, 177,31 kg/cm2, 209,38 kg/cm2 dan 243,33 kg/cm2. Ditinjau dari jenis semen yang digunakan terlihat bahwa beton dengan menggunakan semen adalas tipe I perkembangan kuat tekan betonnya lebih tinggi dibandingkan dengan PCC baik pada FAS 0,50 dan 0,55 pada umur yang sama.
TINJAUAN PERENCANAAN TEBAL PERKERASAN JALAN LAMBARO – BTS. PIDIE DENGAN METODE MANUAL DESAIN PERKERASAN JALAN TAHUN 2017
Authors: Firmansyah Firmansyah , Rifki Rifki , Nazar Nazar
Published: June 2024

Dalam upaya untuk proses pertumbuhan ekonomi masyarakat diwilayah provinsi Aceh, pada tahun 2019 BPJN 1 mengadakan proyek pekerjaan teknik pada salah satu ruas jalan di Kabupaten Aceh Besar tepatnya pada Jalan Lambaro – Bts. Pidie yang merupakan jalan Arteri 2 jalur dua lajur dengan lebar jalan 7 meter panjang jalan 1 km dan lebar bahu 1 meter kiri dan kanan lajur. Masalah yang terjadi dilapangan yaitu kerusakan jalan di suatu wilayah terjadi apabila kendaraan yang melewati ruas jalan tersebut jumlahnya lebih banyak dari kapasitas jalan yang direncanakan. Tujuan penelitian adalah menghitung kembali hasil perhitungan tebal perkerasan yang diperhitungkan konsultan perencana berdasarkan Analisa Metode MDP (2017). Dalam tinjauan perencanaan ini mengumpulkan data sekunder yaitu Data CBR, Lalu lintas harian rata – rata (LHR), dan Gambar Desain, Berdasarkan hasil yang didapati bahwa nilai LHR 9004 kendaraan perhari, untuk nilai CESA4 yaitu 80.130.187,65, untuk nilai CESA 5 yaitu 144.234.337,77, untuk CBR tanah yaitu 12,14%. Dengan mengunakan metode MAK diperoleh hasil tebal perkerasan lentur yaitu, untuk lapis permukaan atas (surface) setebal 4 cm, untuk lapis AC-BC diperoleh hasil 6 cm, untuk lapis pondasi atas (base course) dengan mengunakan material batu pecah kelas A adalah 10 cm dan untuk lapisan pondasi bawah (subbase course) dengan mengunakan material batu pecah kelas B setebal 20 cm. Tebal keseluruhan dengan metode MAK adalah 40 cm. Untuk metode MDP 2017 yaitu, lapisan permukaan atas (surface) AC – WC yaitu setebal 4 cm, lapisan pondasi bawah (base course) AC – BC yaitu 6 cm, dan lapis pondasi bawah (subbase course) AC – Base setebal 24,5 cm serta untuk tebal timbunan pilihan adalah 30 cm. Sehingga tebal perkerasan dengan mengunakan metode MDP 2017 adalah 56 cm. Dari kedua hasil Perhitungan tersebut didapatkan hasil bahwa MDP 2017 lebih ekonomis jika ditinjau dari Umur rencana
Efficacy and safety of early release radial compression time in patient with radial air-inflated pressure device in Ha Noi Medical University Hospital
Authors: Dao Duy Viet
Published: June 2024

ABSTRACT

Objectives: The study aims to evaluate the safety of early - release radial compression time in patients with radial air-inflated pressure devices and to compare the efficacy of early - release radial compression time in patients with radial air - inflated pressure devices with standard methods. Short-time hemostasis is one of the strategies to prevent complications related to the radial artery compression band. Long - time hemostasis in standard protocol may not be necessary.

Methods: 141 patients having radial air-inflated devices were observed. Group 1 contains patients with the early releasing method in which medical staff releases 10 percent of air volume in the compression device every hour. Group 2 contains patients with the standard method of medical staff releasing 10 percent of air volume in compression devices every two hours. The bleeding rate, pain score, and discomfort level were compared between the two groups.

Results: There was no statistical difference in the distribution of baseline characteristics. 2.8% of the group 1 developed swollen in the radial area, which had a diameter of less than 5 cm and needed to re - inflate again. There was no statistical difference between the two groups in bleeding percentages, with a p - value of 0,496 (p > 0.05). There is an obvious statistical difference in pain score and discomfort level between group 1 and group 2. The patients in Group 1 had less pain and lower discomfort level than Group 2.

Conclusions: Release the proper pressure in the compression device from the first hour to every continuous hour is safe and benefits the patient by reducing pain, and uncomfortable level.
Evidence - based practice competency among nursing students at the University Of Medicine And Pharmacy At Ho Chi Minh City And Associated Factors
Authors: Dang Thi Minh Phuong
Published: June 2024

ABSTRACT

Background: Evidence - based practice (EBP) in healthcare is an essential trend for improving patient safety and care quality, making it crucial to ensure EBP competency among nursing students. This study aimed to assess EBP competency among nursing students and identify associated factors.

Methods: A descriptive cross - sectional study was conducted on 230 nursing students in second, third, and fourth year in the University of Medicine and Pharmacy at Ho Chi Minh City. An online survey questionnaire was emailed to the students during the sampling period from ...

Results: The participants had an average age of 21.2 ± 0.97 years. The majority were female (89.1%) and of the Kinh ethnic group (85.7%). The average EBP competency score of the students was 3.56 ± 0.39. Specifically, EBP - related competencies of the students were at a moderate level or higher (> 2.61), with the highest average score observed for attitude at 3.77 ± 0.45. Factors such as research and EBP course grades, confidence levels in computer skills and English proficiency, frequency of EBP application, completion of the thesis, and participation in research clubs all positively influenced students’ EBP competency (p < 0.05). Knowledge, skills, and attitude regarding EBP are closely related. Students with good knowledge usually have good skills and a positive attitude towards EBP (p < 0.01).

Conclusions: Nursing students demonstrated EBP competency at a moderate level or higher. The identified associated factors provide a foundation for enhancing the role of EBP among nursing students.
Data on Small scale and commercial agricultural activities_ 2021 Social Accounting Matrix (SAM) for South Africa.xlsx
Authors: Ramigo Pfunzo
Published: June 2024

The main of objective of the dataset is to improve the quality of data for small-scale and commercial agriculture in South Africa
Centenary Paper: Mutuality, Community and Collectivity: The Book Review and Thinking in Public
Authors: THORNTON NIAMH
Published: June 2024

In 1923 E. Allison Peers launched a new journal at a moment when Hispanic Studies was emerging as a field. Through reviews and editorials, he and the contributors were working out how to engage publics and build readership. From the pages of the journal, it is possible to see him creating a sense of shared dialogue. Often and without compunction, through book reviews, this involved the promotion of his own work and that of others, a question that has become sticky for academics. This article considers the question of (self)promotion, looks back at a selection of reviews from early issues of the journal, and compares these with how twenty-first century para-academia does the work of thinking in public. It proposes that the review needs rethinking and should be considered as a form that creates community and generates collective mutuality.
FAMILY BUSINESS RESILIENCE IN CRISIS: STUDY CASE ANALYSIS IN A COLLECTIVIST SOCIETY
Authors: Kussudyarsana Kussudyarsana , Maimun Muhammad Halim , Maulana Huda Kurnia , Nugroho Munajat Tri , Santoso Budi
Published: June 2024

In an era marked by persistent challenges and uncertainties, gaining insights into how family businesses navigate crises becomes imperative. While previous research has delved into the resilience of family firms, there is a notable absence of a comprehensive exploration into how inherent traits in family businesses, particularly within collectivist societies, contribute to their resilience during crises. This study aims to fill this gap and elucidate the distinctive dynamics and behaviours exhibited by family businesses in such cultural contexts. Utilising qualitative case studies and interviews, this research delves into nuanced insights into the dynamic approaches employed by these businesses. The family firms demonstrated adaptability by adjusting their operations and leveraged human resources by seeking support from family members. Additionally, they showcased creativity in enhancing market offerings. The study also reveals unique behaviours, particularly resilience through collaboration with competitors. This research makes an academic contribution by offering insights into the behaviour of family businesses within collectivist cultural contexts during crises. From a practical standpoint, it informs the development of tailored crisis management strategies for family business owners and policymakers, underscoring the significance of collaboration among competitors. The study emphasizes avenues for fostering innovative approaches, promoting resilience, and ensuring sustainability within the ever-evolving business landscape. Furthermore, it establishes a foundation for future explorations, urging further investigation into crisis adaptation strategies tailored to the cultural contexts in which family businesses are situated.
The mediating role of governance in creating a nexus between investment in artificial intelligence (AII) and human well-being in the BRICS countries
Authors: Saba Charles , Pretorius Marinda
Published: June 2024

The BRICS countries (Brazil, Russia, India, China, and South Africa) aim to achieve Sustainable Development Goals 3 and 16, which involve promoting human well-being for all and building strong institutions and governance. This study examines the AII-HWBG nexus contingent on governance indicators within the BRICS nations in 2012-2022 using the Cross-Sectional Augmented Autoregressive Distributed Lag (CS-ARDL) technique. Its findings reveal a long-term relationship among variables with varied causality directions and point to the necessity of integrating governance quality into AII to boost HWBG in both the short- and long-term perspective. Since AII has not so far been used to support HWBG there is a dire need for caution when considering AII’s interaction with institutional governance, economic governance, control of corruption, political stability, regulatory quality and voice and accountability. The paper highlights the crucial role of governance quality in shaping the way AI investment impacts the human well-being. To ensure an overall improvement of well-being, priority should be given to strategies that promote positive synergy between AI investment and governance while mitigating possible harmful effects. Carefully targeted measures in governance areas can create an environment conducive to AI development where it will significantly benefit the citizens of the BRICS countries.
Le retour de l’uniforme en psychiatrie
Authors: Anröchte Cyprien
Published: June 2024

Cyprien Anröchte , Le retour de l’uniforme en psychiatrie La crise du Covid a amené de nombreux établissements du champ de la psychiatrie à exiger le port de tenues professionnelles pour leurs agents. Mais ce qui a pu être pensé comme une mesure prophylactique temporaire perdure. Le présent travail interroge cet état de fait en s’appuyant sur une revue de la littérature scientifique et sur une expérience personnelle du retrait de l’uniforme par une équipe dans une unité d’hospitalisation. Nous soutenons l’hypothèse que le port de la blouse questionne notre rapport à la spécificité du soin psychique dans la relation thérapeutique et également dans sa dimension institutionnelle.
Le roi dépossédé Pierre II de Yougoslavie
Authors: Pavloviç Vojislav
Published: June 2024

Pierre II de Yougoslavie, devint roi après le coup de 27 mars 1941, mais il ne régnait que depuis trois semaines lorsque son pays fut vaincu par l’Allemagne hitlérienne. Le jeune souverain d’à peine dix-huit ans se trouva face à un double conflit en Yougoslavie, la guerre ethnique et la guerre civile sur fond d’occupation étrangère. L’issue de la guerre en Yougoslavie fut décidée lorsqu’à Téhéran fut prise la décision d’abandonner le projet d’un débarquement dans les Balkans laissant la Yougoslavie dans la zone d’influences soviétique. Dès lors les partisans de Tito ont pu prendre le pouvoir en Yougoslavie et instaurer une dictature de type stalinien, privant le roi de son pouvoir en le forçant à l’exil permanent.
Quels modes d’ambidextrie pour la servicisation ? Une étude longitudinale en PME
Authors: Peillon Sophie
Published: June 2024

La question du rôle de l’ambidextrie dans la servicisation des entreprises industrielles est reconnue comme primordiale tout en restant sous-étudiée. Dans cet article, nous visons à combler ce gap en analysant le cas d’une PME industrielle afin d’identifier les modes d’ambidextrie qu’elle a mobilisés au cours du temps pour soutenir le développement de ses activités de service. Nous montrons que l’exploitation et l’exploration dans le domaine des services apparaissent comme combinées et se renforçant mutuellement. Nous montrons également l’existence d’une ambidextrie « hybride » au sein de cette PME, reposant sur une combinaison des différents modes d’ambidextrie structurelle, de réseau, séquentielle, contextuelle et managériale. Cette étude permet ainsi d’enrichir à la fois la littérature sur la servicisation et sur l’ambidextrie en PME. Codes JEL : O31, O32
L’expression vocale des émotions chez le primate humain et non humain : une approche évolutive
Authors: Barkat-Defradas Melissa
Published: June 2024

L’Humain n’a pas le monopole du cœur. Le cadre conceptuel fourni par la théorie de l’évolution de Darwin et les similarités relevées par l’auteur dans l’expression des émotions entre différentes espèces animales – dont l’humain – l’ont conduit à envisager ce phénomène universel, observé à l’échelle interspécifique, comme un continuum . Les travaux récents en éthologie et en anthropologie soutiennent l’idée que tout organisme vivant doit faire face aux mêmes défis pour survivre (recherche de nourriture, choix d’un partenaire sexuel, défense contre les agresseurs). Dans ce contexte, les différents états émotionnels (notamment la colère, la peur, la joie, la surprise et le dégoût) constituent autant de moyens adaptatifs pour y répondre. Il semble ainsi peu pertinent de séparer l’humain des autres animaux pour ce qui relève du comportement émotionnel.
Vers un schéma cognitif de l’exemplification : étude textométrique et contrastive de formes de l’exemplification en français et en italien
Authors: Rossari Corinne , Montrichard Cyrielle , Ricci Claudia , Sanvido Linda
Published: June 2024

Cette contribution se centre sur un paradigme de connecteurs français et italiens partageant une fonction d’exemplification. Ces formes permettent d’extraire un élément d’un ensemble en lui donnant une fonction d’illustration. Notre hypothèse est que cette opération répond à un schéma cognitif qui ouvre une lacune dans la portée sémantique gauche du connecteur, pour ensuite la combler à droite. Nous adoptons une approche de linguistique outillée de corpus afin de vérifier dans quelle mesure les environnements linguistiques privilégiés de chacune de ces formes confirment ce schéma dans deux genres discursifs différents.
Est-il encore pertinent d’étudier les « petites villes » ?
Authors: Taulelle François
Published: June 2024

Si les analyses scientifiques contemporaines plaident pour une approche par bassin de vie, mettant la petite ville en interrelation avec les territoires proches, les politiques publiques d’aménagement et d’urbanisme actuelles se basent plutôt sur une approche par catégories. Partant de ce constant, l’auteur mobilise quelques travaux de recherche récents qu’il a conduits pour interroger la place de la petite ville et la pertinence d’une approche à partir de cette strate de villes.
Le complexe de Brulard et son devenir
Authors: Chung Ye Young
Published: June 2024

L’œuvre romanesque et autobiographique de Stendhal se prête si bien à la lecture psychanalytique que l’interprétation semble superflue. Pourtant Jean Bellemin-Noël a révélé, au-delà d’une simple découverte de tel ou tel complexe freudien, la manière dont chaque unité du texte pouvait entrer en résonance avec l’inconscient du lecteur. L’article, à son tour, entend montrer que le roman familial dans la Vie de Henry Brulard conduit hors des cadres de la théorie, vers une émancipation à la fois pulsionnelle, esthétique et politique.
Le transport ferroviaire conteneurisé entre Chine et Europe
Authors: Thorez Julien , Colin Sébastien , Savchuk Ivan
Published: June 2024

Après le lancement de la Belt and Road Initiative (BRI), les échanges ferroviaires conteneurisés entre la Chine et l’Europe ont connu une croissance soutenue. Ce projet emblématique des « nouvelles routes de la Soie » a toutefois été récemment confronté à deux « chocs externes », la pandémie de Covid-19 en 2020 puis l’invasion de l’Ukraine par l’armée russe en 2022, dont l’article étudie les conséquences. S’inscrivant dans une démarche de géographie des transports, l’analyse met notamment en évidence les effets contraires de ces événements sur le trafic transcontinental, en hausse pendant la pandémie et en recul depuis le début de la guerre, et révèle le basculement vers l’Asie de l’activité de China Railway Express .
Approches territorialisées de l’accompagnement dans l’emploi
Authors: Aoun Clara , Retsin Camille
Published: June 2024

Nous nous intéressons dans cet article à la mobilisation et la coordination de l'ensemble des acteurs dans l’objectif de développer l'employabilité au sein d'un territoire construit à travers cette coordination. Face aux limites des stratégies d’employabilité menées par les individus et les entreprises, se pose la question de l'importance de l'accompagnement mené par les acteurs de l’emploi. L'employabilité est multidimensionnelle, spécifique à chaque personne, à chaque environnement et par extension, à chaque territoire. Face aux freins périphériques et professionnels, l’accompagnement territorial de proximité se présente comme un moyen de mobilisation d’une diversité d’acteurs pour répondre d'une façon personnalisée et holistique aux problématiques rencontrées par les personnes privées d’emploi. Pour mettre en œuvre cette coordination territoriale, le développement de proximités entre les acteurs apparaît comme nécessaire. Dès lors, les structures réticulaires de proximité(s) endossent la responsabilité de créer des relations de proximités entre les acteurs du territoire.
Uniformity of markov elements in deep reinforcement learning for traffic signal control
Authors: Ye Bao-Lin , Wu Peng , Li Lingxi , Wu Weimin
Published: June 2024

Traffic signal control (TSC) plays a crucial role in enhancing traffic capacity. In recent years, researchers have demonstrated improved performance by utilizing deep reinforcement learning (DRL) for optimizing TSC. However, existing DRL frameworks predominantly rely on manually crafted states, actions, and reward designs, which limit direct information exchange between the DRL agent and the environment. To overcome this challenge, we propose a novel design method that maintains consistency among states, actions, and rewards, named uniformity state-action-reward (USAR) method for TSC. The USAR method relies on: 1) Updating the action selection for the next time step using a formula based on the state perceived by the agent at the current time step, thereby encouraging rapid convergence to the optimal strategy from state perception to action; and 2) integrating the state representation with the reward function design, allowing for precise assessment of the efficacy of past action strategies based on the received feedback rewards. The consistency-preserving design method jointly optimizes the TSC strategy through the updates and feedback among the Markov elements. Furthermore, the method proposed in this paper employs a residual block into the DRL model. It introduces an additional pathway between the input and output layers to transfer feature information, thus promoting the flow of information across different network layers. To assess the effectiveness of our approach, we conducted a series of simulation experiments using the simulation of urban mobility. The USAR method, incorporating a residual block, outperformed other methods and exhibited the best performance in several evaluation metrics.
A fully-decoupled energy stable scheme for the phase-field model of non-Newtonian two-phase flows
Authors: Li Wei , Lv Guangying
Published: June 2024

In this paper, we first propose a novel fully-decoupled, linear and second-order time accurate scheme to solve the phase-field model of non-Newtonian two-phase flows; the developed scheme is based on a stabilized Scalar Auxiliary Variable (SAV) approach. We strictly prove the unconditional energy stability of the scheme and conduct a numerical simulation to show the accuracy and stability of the proposed scheme. Moreover, we can observe that the parameter $ r $ in non-Newtonian fluids can affect spatial patterns during phase transitions, which directly enables us to design and perform optimal control experiments in engineering processes.
Implementation of Project-Based Learning Computational Thinking Models in Mobile Programming Courses
Authors: Ismael  , Nizwardi Jalinus  , Rusnardi Rahmad Putra
Published: June 2024

This study focuses on investigating the integration of project-based learning with computational thinking (PjBL-CT) skills to enhance students’ proficiency in learning mobile programming. The findings of the model provide an evaluation of cognitive aspects, affective aspects in the form of 4C soft skills, and psychomotor aspects. To measure the effectiveness of the model, we will test the differences in the quality of student learning outcomes between two groups: the control group and the experimental group. The cognitive test results showed a value of 80.85 for the experimental class and 73.21 for the control class. For the assessment of soft skill 4C, student creativity aspects are superior to other aspects. Whereas for aspects of enhancing the project’s value, an important finding from the results obtained is the significant improvement in the quality of learning by incorporating computational thinking into the problem-based learning (PBL) model.
Histoire et archéologie de la Gaule romaine
Authors: Van Andringa William
Published: June 2024

Programme de l’année 2022-2023 : Archéologie de la ville en Gaule romaine.
Histoire monétaire du monde romain
Authors: Hostein Antony
Published: June 2024

Programme de l’année 2022-2023 : I. La province d’Asie sous les Antonins et les Sévères : approche numismatique. L’Ionie (suite) et les Cyclades (4). — II. Monnaie et société dans l’Afrique romaine. — III. Actualité de la recherche.
Histoire des sciences dans l’Occident médiéval
Authors: Weill-Parot Nicolas
Published: June 2024

Programme de l’année 2022-2023 : I. Une voie originale pour la philosophie naturelle en Angleterre ? La Summa logicae et philosophiae naturalis (v. 1335-1349) de John Dumbleton. — II. Autour du calcul rénal : médecine, chirurgie et magie.
Culture et vulgarisation dans la France médiévale
Authors: Ducos Joëlle
Published: June 2024

Programme de l’année 2021-2022 : I. Approches d’une traduction en français médiéval : méthodes et outils autour d’un corpus du XIVe siècle. — II. Culture(s) philosophique(s) et laïcs (XIIIe-XVe siècles).Programme de l’année 2022-2023 : I. « Bailler science en françois » : le lexique comme initiation aux savoirs (XIIe-XVe siècles). — II. Culture(s) philosophique(s) et laïcs (XIIIe-XVe siècles).
Histoire de l’art de la Renaissance
Authors: Frommel Sabine
Published: June 2024

Programme de l’année 2022-2023 : L’œuvre de Michel-Ange au prisme du dessin, la période tardive (1549-1564).
Endoplasmic Reticulum Stress Response Mediator IRE-1α Promotes Host Dendritic Cells in Graft-versus-Host Disease Development
Authors: Choi Hee-Jin , Wu Yongxia , McDaniel Mims Brianyell , Pugel Allison , Tang Chih-Hang Anthony , Tian Linlu , Hu Chih-Chi Andrew , Yu Xue-Zhong
Published: June 2024

Allogeneic hematopoietic cell transplantation is an effective treatment for hematologic malignancies, but the complications such as graft-versus-host disease (GVHD) can limit its benefit. The conditioning regimens before transplant, including chemotherapy or irradiation, can trigger endoplasmic reticulum stress. IRE-1α is a major endoplasmic reticulum stress mediator that can further activate both spliced XBP-1 (XBP-1s) and regulated IRE-1–dependent decay (RIDD). IRE-1α–XBP-1s signaling controls dendritic cell (DC) differentiation and Ag presentation, crucial in GVHD progression. In this study, we used DC-specific XBP-1–deficient mice as donors or recipients and observed that XBP-1s was crucial for host DCs in the induction of GVHD but dispensable for the graft-versus-leukemia response. To specifically target IRE-1α in the host, we treated recipient mice with the IRE-1α inhibitor B-I09 for 3 d prior to bone marrow transplantation, which significantly suppressed GVHD development while maintaining the graft-versus-leukemia effect. XBP-1–deficient or BI09-treated recipients showed reduced DC survival after irradiation and bone marrow transplantation. Inhibition of IRE-1α also led to a reduction in DC alloreactivity, subsequently decreasing the proliferation and activation of allogeneic T cells. With further study using RIDD-deficient DCs, we observed that RIDD was also required for optimal DC activation. Taken together, XBP-1s and RIDD both promote host DC survival and alloreactivity that contribute to GVHD development.
Technical Note: Analytical Estimate of Rotor Controls Required for a Propeller Wake Disturbance Rejection
Authors: van der Wall Berend  G.
Published: June 2024

During helicopter air-to-air refueling, the aircraft propeller's jet can engage with the helicopter rotor. The impact on the helicopter rotor thrust and aerodynamic hub moments is solved analytically for the first time, based on blade element momentum theory. The collective and cyclic blade pitch controls needed for disturbance rejection are computed for a typical air-to-air refueling scenario. A propeller jet affecting the retreating side of the rotor requires much more pilot controls to retrim than an impingement on the advancing side.
Tegnologie en gesondheid: myntering op die Witwatersrandse goudmyne, 1886-1920
Authors: Van Aswegen H.J.
Published: June 2024

Miners' phthisis was the most prevalent and most dreaded industrial disease on the gold mines of the Witwatersrand during the period from 1886 until 1920. There is a clear connection between the rising incidence in miners' phthisis and the use of modem technology such as mechanical rock drills. The drills caused a large amount of dust and thus made underground mining operations more dangerous. New technology was, however, also used to prevent dust and consequently contain the incidence of miners' phthisis. Up to 1920 these efforts were only partially successful because neither the state nor the mining industry had a clear health and technology policy.
Die ontwikkeling van Boesmanland gedurende die negentiende eeu
Authors: Broodryk Maritz
Published: June 2024

This article investigates the history of that part of the North-Western Cape formerly occupied by the Bushmen (San). In the first section the author deals with the expansion of the Cape Colony in a northerly direction until the Orange River was proclaimed as its boundary in 1847. Against this step both the San and the Kora groups living in the vicinity of the Orange River reacted by raiding the stock fanners entering this region from the south. This resulted in what became known as the Northern Border Wars and which finally brought an end to the prolonged conflicts in Bushmanland. An increasing number of farmers settled permanently in this part, new districts were proclaimed and government control increased. Although this region remained sparsely populated, the inhabitants gradually changed from a nomadic to a more settled life style.
Prognostic prediction and diagnostic role of Rspondin 1 expression in esophageal squamous cell carcinoma
Authors: Cheng Xiaoxia , Liu Jiao , Niu Danye , Zhang Changsong , Lin Yuansheng , Li Shengjun , Yang Jiao , Wen Jiangtao
Published: June 2024

Context:

Rspondin 1 (Rspo1), a protein family member featuring secreted furin-like domains, plays a pivotal role in cancer development and exhibits a positive correlation with tumor progression. However, its expression in esophageal squamous cell carcinoma (ESCC) is still unknown.

Aims:

Here, we assessed the correlation between Rspo1 and clinicopathological features of ESCC patients, and further investigated the potential role of Rspo1 in ESCC development and clinical outcomes.

Settings and Design:

This was a pilot study.

Materials and Methods:

A total of 112 paraffin-embedded tumor samples from patients with ESCC, including 68 matched adjacent normal tissues, were collected post-surgery. Subsequently, tissue microarray (TMA) and immunohistochemistry (IHC) techniques were employed to assess the protein levels of Rspo1.

Statistical Analysis:

All statistical analyses were performed with SPSS 20.0 (SPSS, Inc., Chicago, IL).

Results:

We found that Rspo1 expression was significantly higher in ESCC than in adjacent normal tissues (P < 0.0001). Moreover, Rspo1 was highly expressed in ESCC tumor specimens and showed a significant correlation with the T classification of ESCC (P < 0.05). Additionally, our findings indicate a positive relationship between Rspo1 and survival time in ESCC. Patients exhibiting moderate to high levels of Rspo1 expression demonstrated superior survival outcomes compared to those with low expression (P = 0.0002).

Conclusions:

Our investigation has demonstrated that Rspo1 is upregulated in ESCC and exhibits a positive correlation with disease progression. Furthermore, we have observed a significant association between Rspo1 overexpression and improved patient survival rates, indicating its potential as a prognostic marker and therapeutic target for ESCC treatment.
Peer Health Mediator: A New Recovery-oriented Paradigm
Authors: Senadla Fatah , Fattah Saïd
Published: June 2024

In his role as psychiatrist, the head of a day hospital, in Mulhouse, a French city, Dr Fattah’s team included M. Senadla as Peer Help mediator. The author’s personal experience working with this former patient as a recovery agent gives an overview of the peer health mediator’s role, its benefits, and how it can be used to improve mental health care. This new management paradigm involving a stabilized patient could promote patient and family empowerment, leading to better social and professional rehabilitation of people suffering from psychiatric disorders.
Analysis of the Mechanisms by which Spline Pitch Errors Affect Powertrain Vibration
Authors: Park Sohee , Min Gyeonghwi
Published: June 2024

As environmental concerns have taken the spotlight, electrified powertrains are rapidly being integrated into vehicles across various brands, boosting their market share. With the increasing adoption of electric vehicles, market demands are growing, and competition is intensifying. This trend has led to stricter standards for noise and vibration as well. To meet these requirements, it is necessary to not only address the inherent noise and vibration sources in electric powertrains, primarily from motors and gearboxes, but also to analyze the impact of the spline power transmission structure on system vibration and noise. Especially crucial is the consideration of manufacturing discrepancies, such as pitch errors in splines, which various studies have highlighted as contributors to noise and vibration in electric powertrains. This paper focuses on comparing and analyzing the influence of spline pitch errors on two layout configurations of motor and gearbox spline coupling structures. The first involves an integrated approach where the motor shaft and gearbox input shaft are combined and share a single shaft, while the input gear is attached using splines. The second approach features a separated configuration where the motor and gearbox exist as separate entities and are connected by splines. Through this analysis, the study investigated the impact of pitch errors occurring in the splines on dynamic behavior. To ensure early NVH performance in powertrain development, the study utilized both quasi-static software RomaxDT(is software B) and multibody dynamics software ADAMS(is software A). Although both layouts are susceptible to vibration caused by pitch errors in the splines, the mechanisms were found to be different. This research has established a process for understanding how the coupling of the motor shaft and gearbox input shaft affects system behavior and NVH performance. Additionally, it underscored the importance of managing spline pitch errors in the layout of motors and gearboxes.
Metrics Based Design of Electromechanical Coupled Reduced Order Model of an Electric Powertrain for NVH Assessment
Authors: Ricardo Souza Marcos , Offner Guenter , Mohammadpour Mahdi , Andreou Panagiotis , Theodossiades Stephanos
Published: June 2024

Electric vehicles offer cleaner transportation with lower emissions, thus their increased popularity. Although, electric powertrains contribute to quieter vehicles, the shift from internal combustion engines to electric powertrains presents new Noise, Vibration, and Harshness challenges. Unlike traditional engines, electric powertrains produce distinctive tonal noise, notably from motor whistles and gear whine. These tonal components have frequency content, sometimes above 10 kHz. Furthermore, the housing of the powertrain is the interface between the excitation from the driveline via the bearings and the radiated noise (NVH). Acoustic features of the radiated noise can be predicted by utilising the transmitted forces from the bearings. Due to tonal components at higher frequencies and dense modal content, full flexible multibody dynamics simulations are computationally expensive. Based on previously developed metrics for sound quality, a methodology is proposed with the requirements to design a reduced order model, coupling analytical solutions for the electrical motor along with lumped parameter powertrain modelling. Namely, for an adequate representation of the tonal content, the proposed model considers the harmonic excitations of the electric motor and torque ripple, time-varying stiffness and backlash for the meshing gears and flexibility of the housing at the bearing connection points. The reduced order model predicts the transmitted bearing forces, enabling an overview of the sound quality of the radiated noise with lower computational time and complexity.
Semi-Adaptive Vibration Controller for Generating the Target Acceleration of the Subsystem in a Prototype Car
Authors: Jung GyuYeol , Lee Sang Kwon , An Kanghyun , Jang Sunyoung , Shin Taejin , Kwak Wooseong , Kim Howuk
Published: June 2024

This research aims to develop an inverse controller to track target vibration signals for the application to car subsystem evaluations. In recent times, perceptive assessments of car vibration have been technically significant, particularly parts interacting with passengers in the car such as steering wheels and seats. Conventional vibration test methods make it hard to track the target vibration signals in an accurate manner without compensating for the influence of the transfer function. Hence, this paper researched the vibration tracking system based on inverse system identification and digital signal processing technologies. Specifically, the controller employed a semi-active algorithm referring to both the offline modeling of the inverse system and the adaptive control. The semi-active controller could reconstruct the target vibration signal in a more efficient and safer way. The proposed methodology was first confirmed through computation simulations using Simulink. The simulation results verified that the semi-active controller could outperform the conventional active controller with respect to converging speed and stability. Following the simulation studies, actual vibration tests validated the suggested method in a steering wheel. A weight disturbance of about 0.24 kg was attached to the steering wheel to realize the possible change in the system characteristics. The semi-active controller could successfully track target vibration, such as a single or a dual harmonic signal, at the target spot of the steering wheel within the control error of about 1.6 dB regardless of the variation of the system transfer function. The proposed semi-active controller will provide an accurate, efficient tracking of vibrations in the evaluation of car subsystems.
Making Modal Analysis Easy and More Reliable – Reference Points Identification by Experimental Prestudy
Authors: Kamper Tim , Beljan Denis , Brücher Haiko , Wegerhoff Matthias
Published: June 2024

Though modal analysis is a common tool to evaluate the dynamic properties of a structure, there are still many individual decisions to be made during the process which are often based on experience and make it difficult for occasional users to gain reliable and correct results. One of those experience-based choices is the correct number and placement of reference points. This decision is especially important, because it must be made right in the beginning of the process and a wrong choice is only noticeable by chance in the very end of the process. Picking the wrong reference points could result in incomplete modal analysis outcomes, as it might make certain modes undetectable, compounded by the user's lack of awareness about these missing modes.

In the paper an innovative approach will be presented to choose the minimal number of mandatory reference points and their placement. While other approaches use results of numerical simulations or rely on a visual evaluation of measurement data by the user, the presented approach is based on a few simple measurements and works automatically without any further user-interaction. In addition to traditional methods such as the Least-Squares Complex Frequency-domain (LSCF) estimator the presented approach takes advantage of a Neural Network to make user-interaction redundant.

The advantage of the presented approach will be shown based on the example of a real structure under test.
Transmission of Sound under the Influence of Various Environmental Conditions on Short Distances
Authors: Schönfeld Nils , Gsell Stephan , Müller Gerhard
Published: June 2024

Electric vehicles, being inherently quiet without the typical combustion noises, pose a potential safety concern, especially at low speeds. Consequently, an Acoustic Vehicle Alerting System (AVAS) is mandatory in many countries worldwide to warn pedestrians of approaching electric vehicles. The development of AVAS sounds involves conducting measurements on an outside noise test track to verify compliance with regulations. Various environmental parameters on the test track can influence the transmission of sound from the car’s AVAS speaker to the measurement microphones.

This research delves into understanding the relationship between the transmission of sound over short distances and environmental parameters. Over a one-year period, 122 measurements were conducted using a specially designed dolly setup. The frequency response function, which characterises the sound transmission, was calculated to determine the dependencies and correlations with environmental parameters.

The findings reveal a significant dependency on environmental parameters, as indicated by a linear regression model. Frequency-based correlation analysis indicates variations in dependency across the spectrum. Furthermore, the analysis suggests that sound transmission is more effective in denser mediums, such as colder air temperatures and higher air pressure. The density of the medium, derived from the measured parameters, exhibits a high dependency.

These results now enable predictions of sound transmission on the outside noise test track under user-defined environmental conditions using artificial intelligence. This advancement not only enhances our comprehension of variations in test track results but also facilitates the prediction of future outcomes.
A Transient Numerical Analysis of a Dissipative Expansion Chamber Muffler
Authors: Maurerlehner Paul , Mayrhofer Dominik , Mehrgou Mehdi , Kaltenbacher Manfred , Schoder Stefan
Published: June 2024

Expansion chamber mufflers are commonly applied to reduce noise in heating, ventilation, and air-conditioning (HVAC) or exhaust systems. In dissipative mufflers, sound-absorptive materials, such as microperforated plates (MPP), are applied to achieve an enhanced and more broadband mitigation effect. Computational acoustics (CA) analyses of mufflers are usually carried out in the frequency domain, assuming time-harmonic excitation. However, certain applications require time-domain simulations. From a computational point of view, such transient analyses are more challenging. A transformation of the governing equations involving frequency-dependent material parameters into the time domain induces convolution integrals. We apply the recently proposed finite element (FE) formulation of a time-domain equivalent fluid (TDEF) model to simulate the transient response of dissipative acoustic media to arbitrary unsteady excitation. Like most time-domain approaches, the formulation relies on approximating the frequency-dependent equivalent fluid parameters by a sum of rational functions composed of real-valued and complex-conjugated poles. The arising convolution integrals are computed indirectly by solving a set of ordinary auxiliary differential equations (ADE) coupled to the scalar wave equation, according to the ADE method. The numerical study of a dissipative expansion chamber muffler with an MPP reveals that the characteristics of transient excitation fundamentally differ from the known time-harmonic behavior because the characteristic quarter-wavelength resonance cannot evolve. Negligible thermal losses allow the use of a constant, real-valued equivalent bulk modulus. The low rational approximation order of the equivalent density entails an increase of computational degrees of freedom induced by the proposed TDEF approach for the given problem by less than 7% compared to the frequency domain formulation.