bluuebunny/crossref_metadata_2025_split huggingface dataset:
IMPLEMENTASI WEB PROXY PADA MIKROTIK UNTUK MENGOPTIMALKAN KEAMANAN JARINGAN WIRELESS LAN DI LINGKUNGAN SEKOLAH MAN 1 GRESIK
Authors: Rozan Muhammad Afrian , Tahir Muhlis , Qirani Ayu Putri , Rizqiullah Nabila , Veranda Mareta , Puji Renny , Ghaffar Abd 
Published: April 2024

ABSTRAK
Teknologi jaringan komputer dalam era digitalisasi saat ini berkembang dengan begitu cepat dan pesat jika sebelumnya jaringan sering kali menggunakan kabel kini banyak jaringan yang dibangun tanpa menggunakan koneksi kabel yang disebut dengan Wireless Local Area Network (WLAN). Perkembangan teknologi jaringan komputer memberikan dampak positif dalam dunia pendidikan salah satunya adalah sebagai penunjang proses kegiatan belajar mengajar di lingkungan sekolah, namun dibalik itu juga terdapat permasalahan yang seringkali ditemukan yaitu peserta didik mengakses konten negatif dan konten yang tidak bermanfaat untuk aktivitas belajar mereka. Oleh karena itu tujuan dari penelitian ini yaitu memanfaatkan keamanan jaringan filter konten web proxy yang tersedia pada fitur mikrotik untuk memblokir situs internet yang tidak pantas dan tidak bermutu bagi peserta didik seperti situs judi online, situs konten porno, dan lain-lain. Penelitian ini menggunakan beberapa metodologi penelitian yaitu metode observasi, wawancara, dan studi kepustakaan. Adapun hasil dari penelitian ini dapat disimpulkan bahwa dengan adanya penerapan web proxy sekolah dapat mengontrol akses internet peserta didik dengan memblokir situs berbahaya atau tidak pantas, hal ini akan menciptakan lingkungan belajar yang lebih aman dan produktif.
ABSTRACT
Computer networking technology in the current era of digitization is advancing rapidly and extensively. Previously, networks often relied on cables, but now many networks are built without cable connections, known as Wireless Local Area Networks (WLAN). The development of computer networking technology has a positive impact on education, serving as a support for the teaching and learning process in school environments. However, there are also challenges, such as students accessing negative or irrelevant content during their learning activities. Therefore, the objective of this research is to utilize network security through web proxy content filtering available in MikroTik features to block inappropriate and low-quality internet sites for students, such as online gambling sites, pornographic content, and others. This research employs several research methodologies, including observation, interviews, and literature review. The findings of this study suggest that by implementing a school web proxy, internet access for students can be controlled by blocking harmful or inappropriate sites. This will create a safer and more productive learning environment.
Cosmology with Galaxy Photometry Alone
Authors: Hahn ChangHoon , Villaescusa-Navarro Francisco , Melchior Peter , Teyssier Romain 
Published: April 2024

Abstract
We present the first cosmological constraints using only the observed photometry of galaxies. Villaescusa-Navarro et al. recently demonstrated that the internal physical properties of a single simulated galaxy contain a significant amount of cosmological information. These physical properties, however, cannot be directly measured from observations. In this work, we present how we can go beyond theoretical demonstrations to infer cosmological constraints from actual galaxy observables (e.g., optical photometry) using neural density estimation and the CAMELS suite of hydrodynamical simulations. We find that the cosmological information in the photometry of a single galaxy is limited. However, we combine the constraining power of photometry from many galaxies using hierarchical population inference and place significant cosmological constraints. With the observed photometry of ∼20,000 NASA-Sloan Atlas galaxies, we constrain

Ω

m

=

0.323

−
0.095

+
0.075

and

σ

8

=

0.799

−
0.085

+
0.088

.
Initial Entropy and Potential Delayed Formation of the Directly Imaged Exoplanet AF Lep b
Authors: Zhang 张 Zhoujian 周健 
Published: April 2024

Abstract
AF Lep b is a rare directly imaged exoplanet with properties consistent with core-accretion evolution models. Using its precise dynamical mass and spectroscopically inferred bolometric luminosity alongside the Spiegel & Burrows evolution models, I determined an initial entropy >8.7 k

B
/baryon at 3σ and an age of 12 ± 4 Myr for AF Lep b. Comparing this planet’s age to the isochrone age (24 ± 3 Myr) of its host association, the β Pictoris moving group (BPMG), suggests AF Lep b formed 12 ± 5 Myr later than its host star. Alternatively, the BPMG’s updated kinematic age (

16.3

−
2.1

+
3.4

Myr) implies that AF Lep b formed 5 ± 5 Myr after its host star’s formation, aligning more closely with protoplanetary disk dispersal timescales. The sensitivities of our findings to the planet’s mass and luminosity are discussed. AF Lep b uniquely facilitates the constraints of its initial entropy and formation epoch, paving the way for similar insights into forthcoming exoplanet discoveries.
Análise de contos literários à luz da semiótica e perspectiva de ensino
Authors: Antunes Tiana Andreza Melo , Marcato Janaína Tonsica 
Published: April 2024

Este trabalho destina-se a analisar o gênero discursivo “conto”, a partir da linha teórica da semiótica francesa, sobretudo com as obras de Fiorin (2011), Barros (2008) e Gomes e Mancini (2007). O objetivo é utilizar o nível mais concreto do percurso gerativo de sentido para discorrer sobre os contos eleitos, o que permite uma leitura mais detalhada de tais textos literários, não realizada segundo a subjetividade, mas de acordo com um caminho metodológico que serve não somente aos textos verbais, tais como o escolhido, porém a quaisquer produções discursivas. Utiliza-se, especificamente, as autoras Lygia Fagundes Telles e Marina Colasanti, para comparar dois contos de temática similar e, assim, com a base tradicional da semiótica greimasiana, evidenciar as semelhanças e distinções a respeito das figuras e temas trabalhados. Quando se pensa na questão do ensino, nota-se que as atividades voltadas ao sujeito da enunciação e à semântica discursiva já permitem aos alunos uma leitura mais acurada de qualquer gênero discursivo, mas, em se tratando dos contos literários, permite observar novas formas de abordar temas diversos, inclusive os do cotidiano, como é o caso da família - tema escolhido para seleção dos contos. Conclui-se que as análises empreendidas fornecem caminhos de leitura que se abrem para possíveis atividades didáticas e que igualmente permitem entender e escapar da ideia de que os textos podem ter infinitas interpretações, já que, pela via da imanência, as leituras já estão inscritas no próprio texto. Para além disso, a manutenção temático-figurativa permite elucidar como uma dada cultura aborda determinados assuntos ideologicamente.
Evaluation of calcium hydroxide root canal filling materials by cone beam computed tomography and three-dimensional modeling
Authors: Ozturk Asel Usdat , Dogan Ekin , Seyedoskuyi Venus , Senguler Berk , Topaloglu-Ak Asli 
Published: April 2024

Aim: The aim of this study was to compare the effectiveness of filling pastes in resin prototype primary molars by cone beam computed tomography (CBCT) and 3D modeling.
Materials and methods: The canals of 27 primary second molar teeth models were shaped with a rotary endodontic motor to file No. 30/04. The samples were randomly divided into three groups and filled with calcium hydroxide-distilled water, Viopex, and calcium hydroxide-propylene glycol, respectively (n=9). Pre-filling and post-filling CBCT images of the shaped canals were obtained, 3D models were reconstructed with MiMiCS® software and volume measurements were made in cubic millimeters (mm3). Differences between the volume of the shaped canals and filling materials were calculated as the miss-filling areas of various filling materials were also recorded. Dependent 2-group I-test, Bonferroni test, and one-way analysis were used for statistical analysis. Data were statistically analyzed at p&lt;0.05 significance level by IBM SPSS 25 software.
Results: Among the three root canal sealers, the filling capacity of the calcium hydroxide-propylene glycol group was found to be the highest (p=0.001).
Conclusion: When calcium hydroxide mixed with propylene glycol was compared to calcium hydroxide alone, calcium hydroxide demonstrated a greater potential for root canals in primary maxillary second molar models. It is clear that clinical studies with follow-ups of the subjects will contribute to literature and clinical success.
La desserte aérienne de La Réunion et de Mayotte ou les enjeux d’accessibilité de deux départements français de l’océan Indien
Authors: Lamy-Giner Marie-Annick 
Published: April 2024

Cet article invite à une comparaison, en termes de transport et de mobilité, entre les deux départements français de l’océan Indien, La Réunion et Mayotte. Ce faisant, elle invite à appréhender les liens aériens que ces deux territoires ont établis avec leur métropole d’un côté et leur environnement régional, de l’autre. Il s’agit donc de soulever la question centrale de l’accessibilité insulaire par le prisme des transports aériens, lesquels serviront de fils rouge à l’analyse. L’accessibilité se définit comme la plus grande facilité à rejoindre un lieu à partir d’un ou de plusieurs autres lieux à l’aide de tout ou partie des moyens de transport à disposition. « L’accessibilité d’un espace à un lieu central peut justement être définie comme l’ensemble des chemins minimaux de tous les lieux à ce centre. Les chemins peuvent être évalués en distance physique (parcourue ou perçue), temps de parcours, coût, voire agrément. » L’accessibilité constitue un facteur primordial dans le désenclavement des espaces insulaires, et établit la dialectique ouverture-fermeture des îles. Manifestement, les espaces insulaires ne connaissent pas tous le même niveau d’accessibilité. Entre les îles qui sont en marge et celles qui sont au cœur de la mondialisation, le gradient est large. Certaines sont en queue d’archipel, mal ou peu reliées aux autres îles, alors que d’autres s’imposent comme des carrefours.
Une approche prospective des coûts de la chaîne logistique amont par la méthode PREVA dans un contexte de valorisation des algues sargasses
Authors: Lanneau Katie , Bilioniere Maurice 
Published: April 2024

L’objectif de cet article est d’étudier les coûts de la chaîne logistique amont dans un contexte de valorisation des algues sargasses. Il s’agit d’une approche prospective dont la méthodologie retenue consiste en la modélisation d’une chaîne logistique amont par un couplage de la simulation à évènements discrets avec une valorisation des processus coûts selon la méthode activity-based costing (ABC). La méthode Process Evaluation (PREVA) qui en découle est jugée pertinente pour évaluer simultanément les flux financiers et les flux physiques d’un processus logistique. Les fréquences d’échouages établies pour l’arrivée de l’input sargasses ont été associées à deux hypothèses de calcul des coûts de transport : une forfaitaire et une à la tournée. L’implémentation des processus de la collecte et du transport des algues sargasses jusqu’au site hypothétique de valorisation fournit de premiers résultats en faveur du coût forfaitaire, globalement plus avantageux pour l’ensemble des sites.
Inégalités de niveau de vie en Nouvelle-Calédonie, l’impact du nickel : mesure et décomposition
Authors: Chantreuil Frédéric , Lebon Isabelle 
Published: April 2024

Avec 9 % des réserves mondiales, la Nouvelle-Calédonie est par essence une terre de nickel. Fondamental pour le marché du travail calédonien, le nickel représente 20 % de la richesse marchande créée en 2019 sur le territoire. Dans cet article, nous cherchons à identifier la manière dont l’activité minière structure le territoire en s’intéressant aux niveaux de vie mesurés à partir des caractéristiques des logements et des équipements des ménages. À partir des inégalités de niveau de vie mesurées en 2009 et 2014 pour différentes aires géographiques, nous montrons sans ambiguïté l’amélioration et la convergence des niveaux de vie des Calédoniens dans cet intervalle. Finalement, la décomposition des inégalités de niveau de vie à la Shapley laisse apparaître une réduction de la contribution de l’activité minière aux inégalités qui tendrait à prouver que la richesse produite par cette activité se diffuse de mieux en mieux à l’ensemble de l’économie calédonienne.
Rethinking the Future of Hydrogen Transport in Pipelines Using an Advanced Liner Material
Authors: Liu Kaimiao , Belarbi Zineb , Dogan Ömer N. , Nakatsuka Matthew A. , Arumugam Ganesh Kumar 
Published: April 2024

Abstract
The aging pipeline infrastructure in the United States raises concerns about potential greenhouse gas leaks, corrosion damage, and catastrophic failures. Many pipelines are 30 to 60 plus years in service with an average age of over 40 years. The three main causes of pipeline gas interruption are material or weld failure, corrosion, and excavation damage. As pipelines age, these risks increase. In addition, there is increased interest in repurposing the existing pipeline networks for hydrogen and hydrogen-methane blends. Refurbishment of existing pipelines to prevent corrosion damage, and subsequent gas leaks and preparation for hydrogen transport will significantly accelerate decarbonization efforts.
Traditional approaches to refurbishing existing pipelines utilize coatings such as fusion bond epoxy or polymer-based liner. These materials provide corrosion protection but are difficult to install on active natural gas networks without significant service interruption. Often sections of pipe need to be removed for offsite repair and refurbishment. In this paper, the authors present a novel smart liner technology that is designed for on-site installation in existing natural gas pipelines. The goal of the liner is to be installed without pipe removal, avoiding major interruptions to gas service.
This paper presents an in-depth investigation into the development of an advanced liner technology with thorough characterization of the various layers of material involved and the performance against corrosion and hydrogen. The liner material, with various topcoats for corrosion prevention, was evaluated using linear polarization and electrochemical impedance spectroscopy under a CO2-saturated 3.5wt% NaCl solution. Corrosion studies demonstrated an advanced nanocomposite omniphobic surface treatment with a corrosion rate of 0.5x10−6mm/year at a thickness of ~20µm. In addition, the omniphobic treated liner showed strong adhesion strength and resistance against folding/bending.
Refurbishment, repair, and transformation of natural gas pipeline networks require new technologies that enable modification with limited interruption to the gas transport at a fraction of the cost of new metal pipelines. The advanced composite liner technology presented here offers a unique solution aimed at overcoming existing installation challenges for corrosion prevention, H2 transport, and leak mitigation.
Observing Deep Water Sediment Plumes Using Mobile and Seabed Deployed Instrumentation
Authors: van Smirren J. , Banks A. , Foster T. , Clarke M. , Marsh L. , Allen K. 
Published: April 2024

Abstract
Sediment plumes are a key issue in assessing the environmental impact of seabed mining. The Metals Company carried out a pilot Nodule Collector test in the NORI-D license area in late 2022. The equipment test was closely monitored in the nearfield from the Allseas test mining vessel and in the far field from a dedicated monitoring vessel. The monitoring program was designed to quantify the concentration of sediment returned to the sea at a mid-water discharge point, as well as the sediment disturbed by the Prototype Collector Vehicle at the seabed. The monitoring efforts were aimed at providing baseline data as well as observing the concentration, movement and settling of the plume. All monitoring efforts were supported by numerical modelling, which was used to inform the best monitoring locations as well as the conditions expected during the testing of the collector vehicle.
Following a comprehensive planning phase, decisions on monitoring methods and equipment and their deployment were described in detailed SOPs for all field work to ensure consistency of all measurements. This included details of instrument configurations and deployment strategies for fixed and mobile monitoring platforms. However, complex field operations are almost impossible to plan down to the minute and a degree of flexibility is required to ensure optimal use of the campaign. The realized monitoring strategy reflected the basic guiding principles detailed in the SOPs adapted to logistical circumstances encountered in the field, This is particularly important to allow comparisons between different types of analyses, including the interpretation of analyses of individual water samples.
In this paper we will present the monitoring strategy and plan developed by DHI in collaboration with The Metals Company. We will also present the different components of the monitoring (mobile assets such as AUV/ROV), fixed stations (mooring lines and landers), water and sediment sampling that were used during the campaign. Recent experiences of tracking and observing plumes with acoustic instrumentation mounted on remotely operated vehicles (ROV), autonomous underwater vehicles (AUV), static seabed landers, and oceanographic moorings will be presented.
Specifically, this presentation will discuss:The value of predictive modelling prior to the start of trials, with the objective of monitoring where significant plume was to be expectedHow differences between predictive modelling and real-time observations influenced short-term monitoring strategiesKey challenges related to instrument performance at extreme depths, mobile monitoring platforms, and simultaneous monitoring operations
Addressing the Energy Trilemma: Offshore Drilling Decarbonization
Authors: Falck F. 
Published: April 2024

Abstract
Offshore drilling rigs play a crucial role in global energy production, particularly in the extraction of oil and gas resources. However, the industry's environmental impact has raised concerns about the need for energy efficiency and decarbonization in offshore operations. This paper aims to explore the challenges and opportunities associated with improving energy efficiency and decarbonizing offshore drilling rigs.
The first part of the paper provides an overview of the Energy Trilemma (Sustainability, Security and Equity) followed by an introduction on the importance of data collection and analysis necessary to monitor energy consumption patterns and carbon emissions associated with offshore drilling rigs. It highlights the significant energy requirements for drilling and mobilization activities along with the corresponding greenhouse gas emissions. These emissions contribute to climate change and environmental degradation, necessitating clear actions for reducing carbon footprints.
The paper highlights the economic and environmental benefits associated with energy efficiency and decarbonization efforts. It emphasizes the potential cost savings resulting from reduced energy consumption and the avoidance of carbon-related taxes or penalties. Furthermore, it reviews a 360-degree approach to Offshore Drilling Rig Decarbonization embedding it into operations, operator-contractor engagements, and technical advances. It also emphasizes the positive impact of such initiatives on reducing greenhouse gas emissions, promoting sustainability, and improving the industry's environmental stewardship.
Next, the paper discusses the potential strategies for enhancing energy efficiency on offshore drilling rigs. It examines advancements in optimized rig design, energy efficiency upgrades, energy storage systems and sustainable behavior enhancements. Additionally, it explores the adoption of low-carbon fuels and electrification of offshore rigs. The proven and expected benefits, challenges, and implementation considerations of these strategies are examined.
In conclusion, achieving energy efficiency and decarbonization on offshore drilling rigs is essential for addressing the Energy Trilemma while it is necessary that the drilling contractor and operator work closely together in operating the business in a way that meets economic, social, and environmental needs of the present without compromising the ability of future generations to meet their own needs. By embracing innovative technologies, optimizing operations, and transitioning towards cleaner energy sources, offshore drilling rigs can significantly reduce their carbon footprints while ensuring a sustainable and responsible future for the industry.
A New Innovative Approach for an Independent Protection Layer (IPL) in Offshore Piping Network
Authors: Jandali M. W. , Hajri K. M. , Garcia E. C. 
Published: April 2024

Abstract
This paper details an additional Independent Layer of Protection (IPL) concept and innovative approach which can be applied to both existing unmanned oil offshore Well-Head Platforms (WHP) and new unmanned offshore WHP to be tied-in to existing Pipeline (PL) network. This IPL which can be installed as a second layer of protection between existing Hydraulic Emergency Shut Down (HESD) system and a Safety Integrity Level (SIL) rated High Integrity Protection System (HIPS), will provide protection against over-pressure scenarios in pipelines downstream of unmanned offshore WHP due to Electrical Submersible Pump's (ESP) deadhead pressure. A new IPL approach was developed for the installation of a new 2 out of 3 (2oo3) Pressure Indicator Transmitters (PIT) with a new independent Programmable Logic Controller (PLC) safety logic solver type, for improving adequacy, safety and integrity. This option utilizes power Circuit Breaker (CB) inside Automatic Frequency Drive (AFD) inlet circuit for ESP shutdown purpose. This IPL does not require extensive programming on the PLC, Remote Terminal Unit (RTU) and Supervisory Control and Data Acquisition (SCADA) and it also optimizes shutdown requirements with minimum cable layouts, conduits, cable trays, fittings, grounding and cable tray supports. Normally, safety within a minimum acceptable risk is the main concern for the transportation of product oil to onshore from unmanned offshore WHP to Tie-in Platform (TP) and then to Gas Oil Separation Plant (GOSP). This approach would overcome challenges for the protection of possible rupture scenarios in topside piping, pipelines, flowlines, and trunk lines due to overpressure from WHP with ESP. Traditionally, only two protection layers are provided, namely, HESD system which is considered as the first layer of protection and a SIL rated HIPS. HESD comprises of electronic transmitter on each flow arm (initiator), Safety PLC (logic solver) for offshore multi-well platform and SSV (Master valve) and export ZV as final elements and the HIPS system is considered as the second layer of protection. However, the risk of scenarios of over-pressures still existed.