bluuebunny/crossref_metadata_2025 huggingface dataset:
Towards monitored tomographic reconstruction: algorithm-dependence and convergence
Authors:   Smart Engines Service LLC, Bulatov K.B. ,   FRC "Computer Science and Control" RAS, Ingacheva A.S. ,   Smart Engines Service LLC,   Institute for Information Transmission Problems (Kharkevich Institute) RAS, Gilmanov M.I. ,   Smart Engines Service LLC,   Institute for Information Transmission Problems (Kharkevich Institute) RAS, Kutukova K. ,   deepXscan GmbH, Soldatova Z.V. ,   Smart Engines Service LLC, Buzmakov A.V. ,   FRC "Computer Science and Control" RAS,   FSRC "Crystallography and Photonics" RAS, Chukalina M.V. ,   Smart Engines Service LLC,   Institute for Information Transmission Problems (Kharkevich Institute) RAS, Zschech E. ,   deepXscan GmbH, Arlazarov V.V. ,   Smart Engines Service LLC,   FRC "Computer Science and Control" RAS
Published: September 2023

The monitored tomographic reconstruction (MTR) with optimized photon flux technique is a pioneering method for X-ray computed tomography (XCT) that reduces the time for data acquisition and the radiation dose. The capturing of the projections in the MTR technique is guided by a scanning protocol built on similar experiments to reach the predetermined quality of the reconstruction. This method allows achieving a similar average reconstruction quality as in ordinary tomography while using lower mean numbers of projections. In this paper, we, for the first time, systematically study the MTR technique under several conditions: reconstruction algorithm (FBP, SIRT, SIRT-TV, and others), type of tomography setup (micro-XCT and nano-XCT), and objects with different morphology. It was shown that a mean dose reduction for reconstruction with a given quality only slightlyvaries with choice of reconstruction algorithm, and reach up to 12.5 % in case of micro-XCT and 8.5 % for nano-XCT. The obtained results allow to conclude that the monitored tomographic reconstruction approach can be universally combined with an algorithm of choice to perform a controlled trade-off between radiation dose and image quality. Validation of the protocol on independent common ground truth demonstrated a good convergence of all reconstruction algorithms within the MTR protocol.
Sensor with enhanced performance based on photonic crystal with a defect layer
Authors:   School of Natural Sciences, Far Eastern Federal University, Efimov I.M. , Vanyushkin N.A. ,   School of Natural Sciences, Far Eastern Federal University, Gevorgyan A.H. ,   School of Natural Sciences, Far Eastern Federal University, Golik S.S. ,   School of Natural Sciences, Far Eastern Federal University,   Institute of Automation and Control Processes, Far East Branch, Russian Academy of Sciences
Published: September 2023

We propose an improved structure of an optical biosensor based on a photonic crystal with a defect layer, which can detect the concentration of organic contaminants in water by defect mode shift. We investigated 4 types of defective photonic crystals with different arrangements of layers inside the perfect photonic crystals and their impact on the performance of the sensor. The sensitivity and amplitude of defect mode were examined as a function of defect layer thickness. Also, the peculiarities of edge modes in the presence of defect layer were investigated. Finally, we obtained a characteristic equation to determine the wavelengths of defect modes for an arbitrary 1D photonic crystal with an isotropic defect inside.
Surface roughness influence on photonic nanojet parameters of dielectric microspheres
Authors:   V.E. Zuev Institute of Atmospheric Optics SB RAS, Geints Y.E. , E.K. Panina  ,   V.E. Zuev Institute of Atmospheric Optics SB RAS
Published: September 2023

All naturally found and technologically fabricated solid microparticles possess surface roughness. Upon optical wave scattering from such particles, in addition to its geometric shape, the surface relief becomes an important morphological factor determining the optical properties of the scatterer. We present results of the numerical 3D-simulations of focusing an optical wave with a dielectric microsphere with randomly distributed surface roughness. We address different cases of azimuthally symmetric and asymmetric distortions of the particle surface. We show that the key parameters of the near-field focal region (intensity, longitudinal and transverse dimensions) referred to as a photonic nanojet (PNJ) are sensitive to changes in the microsphere surface texture. Two important PNJ parameters, the peak intensity and the longitudinal length, are subject to more prominent changes. The influence of the optical contrast (relative refractive index) of the microsphere on PNJ parameters is investigated in detail. The possibility of reducing the influence of surface roughness on the near-field focusing strength by microsphere watering (water-uptake) is demonstrated.
The Representation of Hare Onna in Anime Tenki No Ko By Makoto Shinkai
Authors: Fairuz  , Jeven Efraim Jehezkiel
Published: September 2023

Anime is one of the media for Japanese society to convey messages. The messages are in the form of cultural values and myths that develop and originate from traditional Japanese culture. Belief in myths continues to grow, even influencing Japanese culture, art and literature. One of the myths that is still believed by Japanese people is the existence of "kami" (gods). Most Japanese people adhere to the Shinto religion and believe in Kami. We are all things that smell sacred in the surrounding natural environment. One of the “kami” that the Japanese people believe in is the Fox God Inari. The Fox God Inari is the god of virtue and fertility. Japanese people also believe in Hare Onna. Hare Onna who has the power to change rainy weather to sunny and is the messenger of God Inari. The existence of this Hare Onna can be seen in the anime Tenki no Ko by Makoto Shinkai. This study aims to reveal how the actors of the story, and the setting represent the Hare Onna by using the analytical descriptive research method and Stuart Hall's representation theory. The results of the study show that the actors of the story and the setting of the story represent the strong desire of the Japanese people to turn bad weather into sunny so that their activities can run smoothly and bring prosperity to the surrounding environment through the presence of Hare Onna.
CONHECIMENTOS, ATITUDES E PRÁTICAS DE IDOSOS FRENTE À COVID-19
Authors: Alves Vilela Garcia Raphaela , Mendonça Costa Araújo Gabriela , Aleixo Diniz Rezende Marina
Published: September 2023

Objetivo: Identificar conhecimentos, atitudes e práticas frente à COVID-19 de idosos que vivem na comunidade. Metodologia: Trata-se de um estudo transversal analítico, a população constitui-se de idosos acompanhados por uma Estratégia de Saúde da Família, os instrumentos utilizados foram: perfil sociodemográfico e o CAP (Conhecimentos, Atitudes e Práticas). Resultados: Participaram do estudo 89 idosos, com média de idade de 68,96 anos, com predominância do sexo feminino. Ao serem indagados se o contato humano ou alimentar-se de animais silvestres transmite à COVID-19, 34,8% (n=31) responderam sim, já sobre as medidas de prevenção, 97,8% (n=87) concordam ser necessário utilizar máscara para evitar a contaminação pelo novo coronavírus. A maioria dos idosos 85,4% (n=76) apresentaram esperança sobre o fim da pandemia. Conclusão: A maioria dos idosos conhece, tem atitudes positivas e adotam práticas de controle da transmissão da COVID-19.
Generalization of Ackermann Formula for a Certain Class of Multidimensional Dynamic Systems with Vector Input
Authors: Lapin A.V. , Zubov N.E. , Proletarskii A.V.
Published: September 2023

A compact analytical formula is obtained that determines the entire set of solutions of the modal control problem for a wide class of multidimensional dynamical systems with vector input, where the number of states is divisible by the number of control inputs, and the controllability index is equal to the quotient of this division. This formula generalizes to systems with the vector input the Ackermann formula applied to multidimensional systems with scalar input. The basis to obtaining the generalized Ackermann formula lies in the original concepts of the Luenberger generalized canonical form and operations of the matrices block transposition. For the most convenient calculation of controller, the original system with vector input is reduced to the generalized Luenberger canonical form using the two successive similarity transformations. A lemma is proved that demonstrates the compact analytical form of the inverse transformation matrix. Transition equivalence makes it possible to obtain a complete countably infinite parametrized set of solutions to the modal control problem under consideration. Its parametrization is provided by selecting block coefficients of the matrix polynomial, which determinant corresponds to the given scalar characteristic polynomial. In cases, where the matrix polynomial involved in parametrization is not reduced to the multipliers, the generalized Ackermann formula contains solutions to the modal control problem that could not be obtained using the existing decomposition method. Examples are presented demonstrating both suitability of the proposed formula for analytical synthesis of modal controllers by state in systems with vector input and its advantages in comparison with the decomposition method
Sugarcane Bagasse and Nano-zeolite based Slow Release Fe Fertiliser Hydrogel: Its Synthesis and Characterization
Authors: Sri C. Bharaani , Shanmugasundaram R. , Marimuthu S. , Chitdeshwari T. , Senthil A. , Kalaiselvi T.
Published: September 2023

Background: Iron (Fe) is an essential micronutrient that plays numerous vital functions in crop growth and development. This study was carried out to synthesise and characterize sugarcane bagasse and nano-zeolite based slow release Fe fertiliser hydrogel. Methods: At the Tamil Nadu Agricultural University in Coimbatore, a laboratory experiment was carried out to synthesize and characterise a slow release Fe fertiliser (SR Fe) hydrogel encompassing sugarcane bagasse and nano-zeolite. A slow-release Fe fertiliser was successfully created using the graft co-polymerization method. The chemical composition and surface morphology of the synthesised slow-release Fe fertiliser were characterised using scanning electron microscopy (SEM), FTIR, and thermogravimetric analysis (TGA). Result: SEM results show the evenly distributed pore space, and EDX data show that the superabsorbent nanocomposite was successfully loaded with fertiliser Fe. The grafting of acrylate-based monomers onto starch molecules, the incorporation of nano zeolite into the polymeric matrix, and the loading of Fe nutrition into the hydrogel network were all effective, according to the results of the FTIR analysis. The superabsorbent nanocomposite's temperature stability was demonstrated by the TGA research findings. The current study's findings demonstrated that the SR Fe fertiliser was successfully synthesised and may be regarded as the most promising option for slowly delivering nutrients to crops in order to meet their nutrient needs and improve nutrient use efficiency.
Impact of Iodine Biofortification on Tomato Bioaccessibility through Cooking, Soaking and Simulated Digestion
Authors: Mageshen V.R. , Santhy P. , Latha M.R. , Meena S. , Aswitha K. , Anbarasan S. , Krithika C. , Maimaran G.
Published: September 2023

Background: Even though iodine is not an essential micronutrient for the plant, it is very much needed for a person's mental and physical development. Due to the presence of negative charge on iodine it is highly susceptible to leaching. Further iodine is also highly prone to volatilization loss due to biochemical and physiochemical properties of soil leading to iodine deficiency. Agronomic biofortification of iodine is one of the ways to address iodine deficiency globally. Numerous studies have focused on the process by which plants absorb iodine from the soil, but there is still paucity of knowledge on stability of biofortified iodine in fruits. Methods: In our work, we assessed iodine bioavailability (Cooking, soaking and digestion) in tomato fruit from different sources of chitosan and potassium iodate alone and combinations using main and residual crop trials. The field experiment was carried out in Thondamuthur block of Viraliyur village at Coimbatore district of Tamil Nadu in 2021. Potassium iodate and chitosan were applied in the form of soil, foliar, and chitosan iodate complex at different stages of plant growth. Results: The results suggested that combination and potassium iodate and chitosan complex has increased the iodine stability in fruits of main crop and also retained the iodine in residual crop. As electrostatic interaction between chitosan and iodate prevents volatilization and gradually stabilizes the bioavailability of iodine in fruits. Our findings offer more details on iodine mobility and behaviour in fruits when it is used alone and combination with chitosan at different rates.
Impact of Kharif Rice Establishment Systems and Succeeding Tillage Practices on Rooting Behaviour of Succeeding Chickpea, Blackgram and Mustard
Authors: Vaishnav Sheri , Ramulu V. , Naik B. Balaji , Pasha Md. Latheef , Prakash T. Ram , Rajaiah P. , Yakadri M.
Published: September 2023

Background: The present experiment was designed to evaluate the role of emerging rice establishment systems compared with succeeding tillage practices in supporting the rooting behaviour of chickpea, blackgram and mustard grown in succession. Methods: The current experiment was conducted in kharif followed by rabi during 2021-22 and 2022-23 in a split-split plot design with three rice establishment methods as main plots during kharif followed by two tillage systems as sub plots and in each sub plot, chickpea, blackgran and mustard were grown as sub-sub plot during rabi, after the harvest of kharif rice. Results: Rabi crops grown after dry direct seeded rice following conventional tillage has recorded highest root length and root volume in chickpea (23.83 and 22.97 cm; 13.57 and 13.13 cc), blackgram (20.70 and 20.13 cm; 12.43 and 12.03 cc) and mustard (37.43 and 36.27 cm; 21.50 and 20.80 cc) during successive years of study i.e., 2021-22 and 2022-23, respectively.
Diseño de visualización de datos para el análisis del riesgo de extinción de grupos de especies en el continente americano
Authors: Camacho-Mata Nicole
Published: September 2023

La visualización de datos de este proyecto propone brindar una forma fácil e intuitiva de identificar relaciones y conclusiones entre el Índice de Lista Roja, el Índice de desarrollo humano, la densidad poblacional y las emisiones de CO2, reportados en los países del continente americano, desde el 2005 hasta el 2018.

Para ello, se empleó la metodología establecida en el Dashboard design cookbook elaborado por Ph.D. Franklin Hernández-Castro, que comprende el proceso de investigación y diseño a través de etapas iterativas de selección del tema, recolección de datos y la definición de la relación entre ellos; desarrollo de las preguntas objetivo, limpieza de los datos, exploración y selección del paradigma, implementación y la validación del producto digital.

Los principales hallazgos detectados en la fase de validación determinan que la visualización alcanzó un nivel aceptable en cuanto a la interpretación de la información suministrada y la relación de los datos, así como la facilidad de interacción como un sistema integrado. Por otro lado, es satisfactoria con un puntaje de 95, obtenido en la prueba de usabilidad, siendo calificada como fácil de usar.

Finalmente, se debe destacar que esta visualización busca generar análisis y conclusiones, con el fin de brindar un punto de partida, dando paso a investigaciones especializadas que permitan indagar en las causas del riesgo de extinción de especies y, a su vez, crear una toma de decisiones basada en este tema para el bien de la población y la naturaleza.
Technology Evolution and Tax Compliance: Evidence from Rwanda
Authors: Rossel Lucia , Santoro Fabrizio , Hakizimana Naphtal
Published: September 2023

Narrowing the ‘information problem’ through technology. Data on economic transactions is crucial for tax administrations to be able to enforce tax compliance. One way of obtaining more information is through technology. In the last decade, African tax administrations have increasingly adopted technological advances such as integrated systems, electronic filings, and electronic billing machines (EBMs). EBMs allow taxpayers to digitise their transactions and transfer billing information automatically to the revenue authority. They also hold high potential for taxpayers, as they can allow firms to lower administrative and compliance costs, streamline transactions, improve their record-keeping, strengthen their capacity, and in the case of small businesses, attract clients and engage in trade thanks to the improved accuracy. Rwanda is one of the fastest growing and most technology-oriented countries in Africa, whose tax authority, despite a steadily rising tax-to-GDP ratio, still faces challenges such as limited resources and high levels of informality. In 2013, the Rwandan Revenue Authority (RRA) introduced EBMs through a machine called EBM1. The machine used a SIM card, through which VAT registered taxpayers transmitted sale transaction data to the RRA in real-time. Like any technology, it came with several issues, such as high costs, storage limitations and lack of support. As a result, an improved free software version called EBM2 was rolled out in 2017, which could digitize and store receipts and capture core business information like inventory and item types. Summary of African Tax Administration Paper 30.
Ergonomic Risk Assessment and MSDs Symptoms Among Laboratory Workers Using SNI 9011-2021
Authors: Kusumawardhani Adinda , Djamalus Hendra , Dani Lestari Kartika
Published: September 2023

Introduction: Musculoskeletal Disorders (MSDs) symptoms are experienced by 1.71 billion of the human population and are characterized by persistent pain that decreases the ability to work in almost all types of occupations, including laboratory workers. The various stages of work in laboratory can cause complaints due to repetitive motions, manual handling, static and awkward posture, as well as long-duration of work. Therefore, this study aimed to determine risk level of work ergonomic and MSDs symptoms among laboratory workers. Methods: This study used a cross-sectional design involving 71 laboratory workers who were observed from 8 to 22 June 2022. The respondents were categorized into three Similar Exposure Group (SEG), namely administrative officers, analysts, and field workers. Risk level of MSDs symptoms and work ergonomic of each SEG was measured using the instrument of SNI 9011-2021, while individual factor was estimated through the questionnaire. Results: Out of the 71 respondents, the majority were males, aged <35 years, and had <5 years of work experience. The survey revealed that half of workers experienced MSDs symptoms with a high-risk level in analysts and field workers, particularly in the lower back. The highest MSDs symptoms in all SEG were neck, lower back, upper back, and right shoulder. Conclusion: Ergonomic risk level in laboratory was dangerous for analysts and field workers, and required further assessment by administrative officers. To reduce risk level of work ergonomic, particularly for analysts and field workers, engineering control and the use of manual handling equipment can be implemented.
Correlation between Individual Characteristics, Work Monotony, and Mental Workload with Work Stress
Authors: Savitri Ainayya Rizky , Widajati Noeroel
Published: September 2023

Introduction: Work stress is the inability of a worker to face job demands, leading to discomfort while working. Work stress can be caused by many factors, among them work monotony, excessive workload, and individual characteristics. This study’s aim was to analyze the strength of the relationship among individual characteristics, work monotony, and mental workload with work stress on the crane operators of Jamrud Terminal. Methods: This study used cross-sectional design. The population in this study was all crane operators in Jamrud Terminal as many as 28 people. Total sampling was applied as sampling technique. The independent variables in this study include individual characteristics (age and tenure), work monotony obtained from the questionnaire, mental workload which was appraised using NASA-TLX questionnaire, while the dependent variable was work stress assessed with DASS 42 questionnaire. Coefficient contingency and Spearman correlation test were applied to analyze collected data. Results: This study revealed 13 operators (46.4%) felt normal work stress and the other operators (53.6%) felt work stress ranging from light until very heavy. Contingency coefficient correlation test resulted in weak relationship among age and work stress and strong relationship among work monotony and work stress. Spearman correlation test revealed weak relationship among tenure and work stress and moderate relationship among mental workload and work stress. Conclusion: There were relationships among work monotony and mental workload with work stress on crane operators. The company is advised to give work music, variation on work, and arrange proper break time for crane operator.
Qualitative Dermal Exposure Assessment of Laboratory Technicians in Selected Chemical Laboratories in Eastern Province, Saudi Arabia
Authors: Arfaj Ayman M. , Llamas Jose Lauro M.
Published: September 2023

Introduction: The assessment of dermal exposure is a complex task. The most commonly used methods have fundamental problems, and there are large gaps in the documentation and validation of the known assessment methods. This study aimed to determine the prevalence of self-reported skin problems in laboratory technicians. Additionally, to determine if there is an association between self-reported skin problems and work tasks and other exposure-related parameters, we developed a simple qualitative questionnaire that may be used for conducting qualitative dermal exposure assessments. Methods: A well-structured survey questionnaire was developed and 45 laboratory technicians were interviewed while conducting qualitative dermal exposure assessments in three selected laboratories. The sampling technique was a qualitative survey conducted through interviews. The examined variables included skin problems, work characteristics, and chemicals used. Results: This study indicated that 18% of technicians reported having skin problems, most notably inexperienced technicians or technicians with more than 6 years of experience. Skin problems were also identified in technicians who worked between one and eight hours, performed manual operations, and handled solvents. The prevalence of skin problems has also been associated with changing gloves. However, no significant differences were observed between the examined parameters and skin problems (p > 0.05). Conclusion: The prevalence of self-reported skin problems (18%) among laboratory technicians was not high. The prevalence of dry skin was low (11%). A well-structured questionnaire can be used to conduct a qualitative dermal risk assessment. As this was a cross-sectional study with a small sample size, it was not possible to establish a causative effect between exposure to workplace hazards and dermal problems.
The abductor hallucis muscle flap - a viable surgical solution for treating first ray soft tissue defects
Authors: Chen Sitong , Cheung Timothy P. , Rodriguez-Collazo Edgardo R.
Published: September 2023

Long-standing wounds are at high risk for infection. Therefore, it is critical to achieve wound healing in a timely manner; however, some complex wounds remain recalcitrant and difficult to treat. Local muscle flaps are an underutilized technique with great utility in the reconstruction of complex foot wounds. Providing a healthy bleeding base that promotes wound healing, these muscle flaps can greatly benefit the patient and prevent amputation. In this present report, we demonstrate the use of the abductor hallucis muscle flap in the reconstruction of a complex wound following bunion surgery.
Dynamics of Migration and Integration Processes in Southern Europe
Authors: Sidorova G. , Zherlitsina N.
Published: September 2023

The article analyzes the latest migration trends in Southern Europe. Given the proximity to Africa and the Middle East, which are the main sources of migrant flows, the discussed topic is especially acute for the region and the countries chosen for the analysis, namely Portugal, Spain, Italy, San Marino and Malta. Using a comparative approach, the article focuses on the European general strategy for the reception of migrants versus its actual results. Despite the fact that the EU guidance and standards provide the foundation for immigrant integration policies across the region, the actual legal practice, its implementation and results in specific countries differ widely. To some extent, Portugal is ahead of other nations in the region, and its advantage is the result of a nationwide immigrant integration policy and a single state body empowered to lead its implementation. In Spain, on the other hand, the development of integration policies is performed regionally, meaning the absence of a nationwide integration program and, hence, a certain level of fragmentation and a lesser degree of policy efficiency. Italy adopted its first immigrant integration plan as recently as in 2017, and it has not brought significant results yet. Still, with the recent upscale in immigration flows, Italy’s former soft immigration policies are becoming tougher. The country remains committed to multiculturalism and the quota mechanism for receiving migrants. Although tiny in size, Malta experiences high immigrant flow pressure, and tries to tackle it by providing de facto paid citizenship and residence permits for privileged immigrant strata.
Social Policy and Public Administration Ecosystems
Authors: Udovenko I.
Published: September 2023

The article examines the transformation of social policy in countries that prioritize the use of digital technologies in public administration. State integrated platforms – ecosystems –that emerge in these countries serve as a basis for social interaction, using data on organizations and citizens of one or more countries interactively, which leads to changes in social policy. The main changes of this kind include convergence of state and corporate structures for managing social processes and individualization of the state’s interaction with people. The article identifies the social imbalances that have limited the creation of a global ecosystem of social management and become the driver for the emergence of several types of such ecosystems. The analysis demonstrates that implementation of business models of digital transformation of public administration in some countries retains the historical continuity of the principles that underpinned their social policy earlier. The author concludes that the partnership role of the corporate sector in setting goals for social development leads to formation of cross-border horizontally oriented ecosystems in countries with social-democratic and liberal traditions. In countries with etatist and paternalistic value orientations the striving to achieve digital sovereignty leads to the introduction of an hierarchical principle of ecosystem formation. Meanwhile, countries with similar historical continuity and value orientations develop various digital forms of realization of public goods – monetary or in the form of socially valued services. As a result, the study proposes a typology of public administration ecosystems built on two bases. The first is the institutional basis of digital transformation, which implies the consolidation of the leading role of the state or public-private partnership, and the second is the one concentrating on social policy supported by digital technologies.
The Role of the Economic Development Interests of Bhutan and Nepal in Determining Their Foreign Policy Strategies
Authors: Shirgazina E.
Published: September 2023

The article provides a comprehensive analysis of the economic situation in two small countries of South Asia – Bhutan and Nepal. The author has studied the agricultural sector, industrial, tourist, hydroelectric industries of their national economies, the range of goods produced by Bhutan and Nepal, as well as the circle of their main trade and economic partners. The role of income from labor migration for improving the well-being of the population of both states is considered separately. The author analyzes Bhutan’s and Nepal’s indicators of socio-economic development according to the UN classification. Based on the work carried out, the author comes to the conclusion that for both countries their economic and social interests play the key role in determining their foreign policy strategy. As landlocked countries with a complex and ambiguous history, their relations with two neighbors, India and China, are their priority. Taking into account the Indo-Chinese competitive interaction, it becomes obvious that the Governments of both Bhutan and Nepal are trying to find a balance between the two rival countries and their own national interests. However, they choose different balancing scenarios. Nepal is characterized by a clearly represented course towards the sovereignization of the country and its foreign policy with the creation of positive neutrality in relations with both neighbor states. The leadership of Bhutan, from the other side, traditionally chooses a pro-Indian course with cautious steps towards resolving contradictions in relations with China.
Retrouver les paysages des peintres de Barbizon en forêt domaniale de Fontainebleau : chaos rocheux, sylviculture et paysages culturels
Authors: Avenas Victor , Meyrier Sophie
Published: September 2023

Préservation du patrimoine naturel et culturel et sylviculture sont souvent perçus comme antinomiques par le grand public. Pour certains, la sylviculture est soit « rentable », mais destructrice, soit respectueuse mais onéreuse et « assistée ». Une expérience, menée en 2018 en forêt de Fontainebleau, sur une partie des chaos des Étroitures et du Restant du Long Rocher, illustre que sylviculture et patrimoine tant culturel que biologique peuvent s’enrichir mutuellement. À partir de l’œuvre des peintres de l’École de Barbizon, une équipe de forestiers, paysagistes, naturalistes et archéologues a mis au point un mode opératoire, réalisé sans subventions. Cette expérience a donné lieu, en interne, à un « Guide de gestion des chaos rocheux ». Ce mode opératoire traite aussi des platières et landes, rendues inaccessibles aux engins d’exploitation standard par la ceinture de chaos rocheux.
Messages clés• Modifier la sylviculture pour retrouver les paysages des peintres de Barbizon.• Un mode opératoire a été mis en place dans les chaos rocheux de la forêt de Fontainebleau.• Un « guide de gestion des chaos rocheux » a été rédigé.
Penyuluhan Hukum Oleh Notaris Mengenai Status Hukum BUMDES Pasca Pemberlakuan Peraturan Pemerintah Nomor 11 Tahun 2021 tentang Badan Usaha Milik Desa
Authors: Riski Setyaningrum Urip Tri
Published: September 2023

Article 117 of Law Number 11 of 2020 on Job Creation changes Village-Owned Enterprises from previously business entities to legal entities. The future consequence is that Village Owned Enterprises are included in one of the legal subjects. Previously, it was sufficient to ratify the Village Regulations without having a notarial deed. In fact, the function of an authentic deed made by a Notary is related to the perfect strength of proof. The existence of the authority of a Notary to be able to conduct legal counseling in connection with the making of a deed as stipulated in Article 15 paragraph (2) letter e of Law Number 2 of 2014 on the Notar Public.Thus, the researcher formulates the following formulation of the problem: what is the role of the notary in legal counseling regarding the legal status of Village-Owned Enterprises after the enactment of Government Regulation Number 11 of 2021 on Village-Owned Enterprises? The research method used is normative with library research. The results of the study concluded that notaries in legal counseling can basically be limited to making deed of establishment of Village Owned Enterprises as legal entities, not requiring direct visits to each village to then influence residents to use their services. This is clearly prohibited in the Notary Code of Ethics, because a Notary is not a consultant on all legal issues.
SAGD-VL Framework: A Framework for Serious Adventure Game Development in A Virtual Laboratory
Authors: Sany Diny Syarifah
Published: September 2023

A virtual laboratory is an instructional approach to facilitate learning on a scientific procedure or experimental procedure to motivate students to think critically and to improve problem-solving skills through virtual media. A serious adventure game is a game that has a serious purpose for example Education but with an adventure genre that allows the user to go on adventures and explore within the game. The merging of a virtual laboratory and a serious adventure game will contribute to the progress of the education field and motivate students in virtual practicum activities. But currently, there is no particular software development framework for developing a serious adventure game for a virtual laboratory. This study aims to produce a serious adventure game framework for a virtual laboratory called SAGD-VL (Serious Adventure Game Development for Virtual Laboratory). SAGD-VL is obtained from analysis of characteristics of virtual laboratory, adventure game, similar software, existing game development methods, and game mechanics mapping framework so that an appropriate development framework will obtain and improve student ability. SAGD-VL consists of pre-production, production, testing, and post-production, and each of these steps has specific components. The SAGD-VL framework was tested by building a game according to the proposed framework. The proposed game mechanics is also the result of testing players repeatedly to get optimal game mechanics. This test aims to see the effectiveness of the game produced with SAGD-VL on improving the player's abilities and determine the importance of specific components in game design. The game was tested on 128 high school students by dividing them into reading groups and playing groups and tested by doing pre-test and post-test. The results show that the game produced by the SAGD-VL framework indicates a better positive impact than learning by reading and obtains an increase in post-test results achieving 115.74%.
Digitalisasi Layanan Kesehatan Desa Grujugan Melalui Pengembangan E-Posyandu menggunakan Metode SDLC-Waterfall
Authors: Fiqa Haidar Fadhila , Pradana Rendi Putra , Hanif Mochammad , Septiansyah Rio Ghaniy
Published: September 2023

Posyandu is a basic health activity organized from, by and for the community assisted by health workers in an effort to improve the health quality of each village. Posyandu is a community-based health effort. Health information is generated from all routine programs carried out by the village posyandu. In managing the data, the information obtained is the main problem faced by the Posyandu in Grujugan Village. Limited access to information also causes villagers to be unable to control the health of their families, starting from children, mothers and the elderly. In an effort to improve the quality of information on examination results, a web-based posyandu information system called eposyandu was designed. The eposyandu application is built using the SDLC (System Develop Life Cycle) method with a waterfall model which is quite effective in software development. The results of the tests carried out on the application by the cadres showed results that were in accordance with the needs analysis and program design. The use of the eposyandu application is expected to improve the quality of the Posyandu information system in Grujugan Village.
PERANCANGAN DESAIN USER INTERFACE DAN USER EXPERIENCE DARI APLIKASI PIRING MAKANKU MENGGUNAKAN APLIKASI FIGMA BAGI REMAJA
Authors: Rio Ramadhan  , Hamidillah Ajie  , Ze. Ferdi Fauzan Putra
Published: September 2023

Penelitian ini bertujuan untuk menghasilkan sebuah aplikasi mobile berbasis Android yang ditujukan sebagai sebuah media promosi program dari Kementerian Kesehatan Republik Indonesia yaitu Piring Makanku yang ada di dalam Pedoman Gizi Seimbang kepada remaja usia 15-18 tahun. Pengembangan aplikasi Android sebagai media promosi dari program Piring Makanku ini menggunakan framework Flutter. Penelitian ini menggunakan metode pengembangan RAD (Rapid Application Development) yang merupakan sebuah metode pengembangan perangkat lunak yang mengutamakan aspek pengerjaan yang singkat, praktis dan minim sumber daya untuk membantu penelitian menjadi lebih terarah,terukur dan teratur. Pengujian yang dilakukan pada penelitian ini untuk menguji kualitas dan kelayakan dari aplikasi yang dikembangkan menggunakan dua tahap pengujian, yaitu pengujian alpha yang dilakukan dengan menggunakan metode pengujian black box test yang dilakukan oleh tim pengembang untuk menguji aspek fungsional dari aplikasi, kemudian pengujian beta yang juga dilakukan dengan menggunakan metode pengujian black box test yang kali ini dilakukan oleh responen pengguna remaja secara langsung. Setelah pengujian terhadap aplikasi telah dilakukan, tahapan selanjutnya adalah menguji aspek usability dengan menggunakan metode SUS (System Usability Scale) untuk melihat apakah hasil aplikasi layak diterima (acceptable) serta berapa SUS Score yang didapatkan dari aplikasi ini agar selanjutnya dapat didistribusikan secara luas kepada masyarakat Indonesia khususnya kepada remaja dengan rentang usia 15-18 tahun agar aplikasi Piring Makanku dapat menyampaikan pesan tentang apa itu Piring Makanku serta pentingnya menjaga pola makan dan gizi yang seimbang bagi diri sendiri.
Oilfield Sidetracking-Fracturing Technology Drives out Reservoir Potential - An Economic and Effective Solution to Improve EOR of Low-Permeability Reservoir
Authors: Lu Hongjun , Liu Hanbin , Wang Shangwei , Gui Jie , Liu Zhongneng , Ren Yong
Published: September 2023

Ansai oilfield, located on the Loess Plateau in Northwest China, is famous for its typical low-permeability reservoirs and has been developed for more than 30 years. There are more and more flooded wells, low production wells and casing damage wells, which have become the "stumbling block" on the road of stable development. How to produce the remaining reserves more effectively? Sidetracking-fracturing in the original wellbore has become an important means to tap remaining reserves.

The recoverable reserves in this area are still large. The effectiveness of conventional stimulation measures in original wells is low, and there are new problems in drilling renewal wells. Due to the strict environmental protection regulations, the wellsite approved by local governments is limited and the cost of renewal wells is high. Developers tend to sidetrack and then fracture to restore production. There is no need to apply for new wellsites. Original wellbores are not wasted and the cost of renewal wells is saved. More importantly, fracturing network can be reconstructed to fully utilize the remaining oil and improve EOR.

3.5" wellbores were sidetracked in 5.5" wellbores. The multistage fracturing in slim hole is implemented. Sidetracking technology rebuilds new wellbore and reconstructs underground well pattern, establishing a new wellbore system for fracturing. The fine fracturing is realized by fine depicting the distribution of remaining oil and optimizing the sidetracking well type. The sidetracking holes accurately pass through the remaining oil area not touched by the original wellbores, achieving a very good effect of increasing production, and the investment cost is low. Through the implementation of sidetracking-fracturing technology, old wells are revitalized and the EOR is continuously improved. Compared with other stimulation measures, the sidetracking-fracturing technology has more obvious ability to tap the remaining oil. The biggest highlight of this technology is to make full use of the upper wellbores of long-term shutdown wells and the original surface equipment to effectively utilize the uncontrolled oil reserves of the original wells without drilling new wells.

Since 2015, more than 300 wells have been implemented, and the success rate of production increase exceeds 90%. The sidetracking-fracturing technology overcomes the constraints of environmental protection regulations, investment, site and slim hole technology in Ansai Oilfield, realizes the economic and effective development of low-permeability reservoir, and successfully improves EOR.
Multifunctional Proppants Enhance Well Economics and Minimize Intervention by Deploying Advance Features During Fracturing Completion: Success Stories from Oman
Authors: Al Aamri Ghusun , Christiawan Arya , Saldungaray Pedro , Zaabi Abdullah , Al Hadhrami Issa , Ali Ayaz , Balushi Shihab , Al Obeidany Rashid , Yuyan Rioka
Published: September 2023

For decades most proppant development efforts concentrated on developing proppants that could either cope with higher stress and deliver higher conductivity or improve proppant transport via lower density, while minimal effort was put in adding other functionalities. Lately it has been recognized that placement of proppant into the formation brings a unique opportunity of conveying new functions, additional to the primary roles of keeping the frac mechanically open and providing a conductive path for production enhancement. This approach enables reducing the total cost of ownership of addressing multiple completion, data acquisition production assurance and surveillance issues by deploying multifunctional proppants in the well initial completion.

Specialty functions can be incorporated into manmade proppants during the industrial manufacturing process, thereby exploiting the placement opportunity brought by hydraulic fracturing, gravel or frack pack completions involving proppant. These functions might include assuring flow in the production system, solving formation fines production, providing reservoir surveillance or monitoring fracture properties.

This paper reviews the latest technology developments that enable the incorporation of these functions into proppants, including how the new proppant delivered technologies permit users to cost effectively deploy additional functionalities in the initial completion of hydraulically fractured, frac-packed and gravel-packed wells. The paper will also present recent case histories of field implementations of these technologies In the Sultanate of Oman which illustrate how these high function proppants can reduce overall operating costs, enhance production and diagnose hydraulic fractures. The field implementation works on this paper is as result of joint study collaboration cross technical disciplines between operator, service company and proppant technology supplier, to find appropriate solution for reservoirs and completion challenges on various fields at Oman.
CO2 Foamed Acid Systems for High Temperature Acid Fracturing
Authors: Karadkar Prasad , Shehri Tamim , Awaji Ayoub , Reyes Enrique
Published: September 2023

Foamed acid fracturing is gaining importance to maximize flowback recovery and is particularly applicable when reservoir energy is not sufficient to effectively flow back the well. Foamed acid offers additional benefits such as reduced water consumption and improved acid diversion, in addition to potential features such as retardation and deeper conductivity generation. The thermal stability of foam at high temperatures is one of the main challenges. In this paper, two distinct CO2 foamed HCl acid systems with retarded acid characteristics are developed for high-temperature applications.

The development of foam viscosity depends on the type of gas, desired foam quality characteristics, the external phase fluid viscosity as a function of the type of acid blend and strength, the corrosion inhibitor package, the foaming agent, and stabilizers. The performance of CO2 foamed acid systems was assessed by several laboratory tests characterized by compatibility, corrosion, and static foaming. The rheological properties of two retarded acid systems foamed with CO2 were measured using Fann 35 at different shear rates.

The control of acid reactivity, fluid loss, and conductivity generation are three essential aspects of acid fracturing that must be addressed for acid stimulation treatments to be successful. Overall acid reactivity, which governs the dissolution of carbonate rock, can be significantly decreased after foaming at the same acid strength and temperature. This work develops two non-viscous base acid systems for foaming applications, one based on a retarding agent and the other on an organic acid, both combined with a strong mineral acid, HCl. The effectiveness of corrosion inhibitors and intensifiers was tested on T-95 type coupons at 300°F. Static foam half-life measurements were done by generating CO2 foam in a liquid column at atmospheric conditions. The static foam half-life was measured at 3-5 min for an optimized foamed acid system with 90% foam quality. Static foaming tests were also performed using blender tests to evaluate on-site quality check. The fracture geometry and the removal of undesired fines from the fracture face are influenced by the viscous characteristics of foamed acid systems. The CO2 foamed viscosity was measured at 47-55 cp at a 511 1/s shear rate using the B1-R1 bob-rotor combination for different retarded acid systems.