bluuebunny/crossref_metadata_2025 huggingface dataset:
Horizontal post- An innovative method to rehabilitate endodontically treated teeth
Authors: Kapri Anita , Rana Varun , Sharma Sonali , Sharma Sumit , Jacob Oliver , Nainan Oommen
Published: March 2023

Current literature suggests that tooth fracture post endodontic treatment is a more common complication than an endodontic reinfection. The best way to treat such complication is rehabilitation with complete coverage restoration with or without a foundation restoration. Critical analysis of several in vitro studies suggest that a posterior glass fiber reinforced composite restoration, particularly with glass fiber posts placed horizontally in a bucco-lingual direction improves the fracture resistance significantly. These case reports describe in detail the method of placement of posts horizontally rather than the conventional vertical placement in endodontically treated teeth to strengthen the remaining coronal tooth structure.
Analysis of the Hydrodynamic Characteristics in a Rectangular Clarifier under Earthquake-Induced Sloshing
Authors: AKSEL Murat
Published: March 2023

Wastewater treatment plants, which play a crucial role in protecting the hydrosphere, are earthquake-prone infrastructures with large tanks and sensitive equipment. Damage to the structures in such facilities during seismic activity on the lithosphere can cause environmental pollution and threaten public health. Since the units/tanks in the treatment plants are not of different geometries and sizes, they may exceed the freeboard of the wave height due to the sloshing event. In this study, the sloshing dynamics of a rectangular type of clarifier were investigated. First, numerical parameters, boundaries, and initial conditions were validated using the results of an experimental campaign. Secondly, model conditions were kept constant, and geometry was enlarged (i.e., scaled-up) to investigate the variation of hydrodynamic forces near vulnerable equipment (such as scrapers and weirs) in clarifier. The numerical model was run for characteristics of two different earthquakes (i.e., Chi Chi-1999 and Kocaeli-1999). The results showed that dynamic pressure values near vulnerable equipment increased up to 120 times higher than the operating conditions. The maximum sloshing wave heights were calculated as 1.2 m and 1.45 m for Chi Chi (1999) and Kocaeli (1999) earthquakes, respectively.
A comunidade quilombola Laranjituba/África: breves considerações sobre história, memória e desenvolvimento (Paper 386)
Authors: Guedes Ana Célia Barbosa , Salgado Mayany Soares
Published: March 2023

Neste artigo analisam-se experiências passadas e presentes dos povos quilombolas de Laranjituba/África, localizadas na região do baixo Caeté, município de Abaetetuba/PA, principalmente, sua luta por acesso a políticas públicas que possam assegurar seu modo de vida e pela manutenção da identidade quilombola na contemporaneidade por meio das tradições ali existentes. As estratégias desses povos para garantir seu território incluem a junção de suas comunidades para atender as necessidades burocráticas exigidas pelo Estado brasileiro, além de sua organização enquanto Associação Remanescente de Quilombo, observando o contexto político mais favorável, via ITERPA, que a criação de um único território quilombola proporciona. No âmbito do processo de titulação desse território e do reconhecimento da territorialidade, observa-se, particularmente, a importância da história e memória dos mais velhos/velhas que ali vivem.Palavras-chave: Quilombo Laranjituba/África. História. Memória. Território. Abaetetuba/PA.
Simbologia do rural-urbano na floresta amazônica: políticas, mediações e identidades (Paper 387)
Authors: Castro Edna Maria , Alonso Sara
Published: March 2023

Observa-se nos últimos anos um aumento do interesse de pesquisas sobre cidades na Amazônia, voltadas, sobretudo, para compreender a diversidade do urbano considerando o seu contexto social, cultural e étnico. Contudo, ainda se encontram lagunas teóricas na formulação de questões analíticas que a partir da perspectiva sociológica e etnográfica explorem a dimensão simbólica das práticas (compreenda-se os efeitos e eficácia) sobre o espaço social. Nesta linha analítica, este trabalho explora, desde uma situação empírica (cidade de Altamira-Amazônia Brasileira) a dimensão simbólica do rural-urbano, e seus efeitos constitutivos para instituir identidades no espaço da cidade no contexto de processos de transformação, de reagrupamentos urbanos e da viabilização de políticas. Pressupomos que o espaço da cidade assume e produz diferentes significados, segundo o contexto em que os diversos agentes envolvidos na produção desse espaço lutam e materializam práticas, que põem em jogo as divisões desse espaço e, ao mesmo tempo, evidenciam a eficácia simbólica ou a ação produtiva da prática.Palavras-chave: Rural-urbano na Amazônia. Diversidade do urbano. Identidade. Mistura. Mediação simbólica. Altamira.
Amino Acid Content of Some Species from Trigonella L. Genus Collected from Turkey
Authors: URAS GÜNGÖR Şerife Selma
Published: March 2023

A study was undertaken to evaluate the amino acid composition of the seeds of Trigonella cylindracea Desv., Trigonella mesopotamica Hub.-Mor. and Trigonella smyrnea Boiss. which are growing wild in Turkey. The seeds of three species contain both essential (histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, valine, arginine, and tryptophan) and non-essential (alanine, aspartic acid, glycine, glutamic acid, proline, serine, and tyrosine) amino acids. The major amino acid was glutamic acid with a value of 4819 mg/100 g (T. cylindracea), 5888 mg/100 g (T. mesopotamica) and 4146 mg/100 g (T. smyrnea). Among the essential amino acids, lysine is found at the highest rate in all three species. The highest amount of lysine was found in the seeds of T. mesopotamica, followed by the seeds of T. cylindracea and T. smyrnea (3352±0.02 mg/100 g, 3059±0.03 mg/100 g and 2947±0.04 mg/100 g, respectively). The literature review showed that the amino acid composition of the studied seeds were evaluated for the first time in this study, therefore; our study provides important preliminary data to the literature in terms of evaluating the chemical compositions of three Trigonella species.
Deformidades en la cultura: obstáculos para la formación de una sociedad
Authors: Fernández Beltrán Mateo
Published: March 2023

El siguiente artículo presentará un diagnóstico sobre la pérdida social; una construcción de murallas que busca establecer una separación del sujeto de a pie con su misma comunidad, gobierno y su espiritualidad. Enfocando el concepto de “enfermedad mortal” de Soren Kierkegaard como el padecimiento de la sociedad y dilucidando el concepto de gobierno en Maquiavelo, que establece el punto de partida para la epidemia de dicha enfermedad y su relación con la separación del sujeto con respecto a su realidad. La representación de la sociedad actual que se retrata en el artículo es una clara critica a los procesos sociales que se establecen en nuestra sociedad; es observar con detenimiento el esqueleto de la sociedad latinoamericana y descubrir que la crisis política no solo se refiere a los altos mandatarios y a las personas que dirigen el poder en los estados, es una mirada al ciudadano que tenemos dentro y que ejerce un papel fundamental en la construcción de dicha sociedad.
Periapical Healing of Mandibular Posteriors Having Calcific-Like Deposits: A Rare Case Report
Authors: MOBARAKI Babak , JAHANDİDEH Aslan , TAKİ Sadık , ÖZÜKOÇ Can , ÇAPAR Onur
Published: March 2023

The aim of this paper is to present an interesting case of a periapical healing of mandibular posteriors having calcific-like deposits with radiolucent lesion. A 35-year-old healthy female patient was referred to our clinic by a general dentist. A diagnosis of calcific-like deposits with apical periodontitis lesion on the root surfaces with pulp necrosis was made. The root canal was prepared using the sequential hand files and rotary files. In the first session, calcium hydroxide was applied to the root canals to treat the radiolucent lesion. A one-week break was taken between the first and second session, and finally, the canals were filled with standard cold lateral gutta-percha condensation. No clinical signs were detected in the clinical examination of the controls, and the calcific-like deposits on the root surfaces and radiolucent lesion were healed in follow-up x-rays. The cases presented showed acceptable functional and/or successful recovery without recurrence at follow-up examination.
Competitiveness of cities in the post-pandemic time: The perspectives of residents and tourists
Authors: Sztuk Aleksandra
Published: March 2023

The COVID-19 pandemic has sparked an unprecedented crisis in the globalized, modern economy. Cities actively promoting their image faced the challenge of maintaining a positive perception of the place and modifying their offers due to massive coronavirus infections. As a time of gradual stabilization, the post-pandemic period requires cities to introduce or continue appropriate changes in their marketing strategy to ensure competitiveness to the effects of the pandemic. This paper aims to present selected changes in the city offers addressed to residents and tourists during the pandemic and to determine how these changes may affect the city’s image as one of the factors of competitiveness. A review of literature and research published in the years 2021–2022 was used, presenting solutions implemented by cities to maintain a positive image, demand, and stakeholder satisfaction. Examples of changes applied by territorial units are described from the perspective of two primary target groups of the cities: residents and tourists. Based on the analyzed secondary data, the author notes an increase in the interest of local communities in nearby tourist destinations and the need to transform marketing messages that encourage residents to engage in local tourism. Among some of the city’s recipients there was also more attention given to the use of coworking spaces. Also, a positive impact of temporary urban planning on community participation in urban marketing was observed. Referring to the literature related to the city image, these changes can directly affect the competitiveness of cities and support the gradual economic recovery after the crisis caused by the global pandemic.
Kultura pracy a jakość życia
Authors: Mruk Henryk
Published: March 2023

Nadmierna eksploatacja zasobów ziemi, pandemia, wojna Rosji z Ukrainą to szczególne warunki powodujące zmiany funkcjonowania przedsiębiorstw. Te warunki przyczyniają się do zmian oczekiwań pracowników w odniesieniu do warunków pracy w przedsiębiorstwach. Prowadzi to do zmian w działaniu przywódców organizacji. Pracownicy oczekują od liderów tworzenia warunków do mądrej pracy. Oczekują dialogu, transparentności, poczucia bezpieczeństwa, równoważenia pracy zawodowej z jakością życia, korzystania z możliwości rozwijania siebie. Wyzwaniem dla liderów jest skuteczne komunikowanie się z pracownikami, uwzględnianie ich potrzeb, dbanie o czas dla realizowania siebie. Rosną oczekiwania w odniesieniu do wiedzy merytorycznej, empatii oraz znajomości psychologii po stronie osób pełniących funkcje przywódcze w biznesie. Kierowanie się oczekiwaniami w zakresie jakości życia pracowników jest warunkiem osiągania celów biznesowych oraz realizowania zadań w kwestii produktywności oraz skuteczności.
An analysis of the role of targeted muscle reinnervation (TMR) in quality of life and pain outcomes: a case series
Authors: Zargaran David , Nagra Raveenjot , Zargaran Alexander , Akella Medha , Ajam Yazan , Woollard Alex , Kang Norbert
Published: March 2023

Aim: Targeted muscle reinnervation (TMR) surgery has fundamentally changed the management of patients who have suffered or are about to undergo amputation. Providing nerve stumps with a muscle target has been shown to have profound effects on levels of post-amputation pain in relation to phantom limb pain (PLP) and neuroma pain (NP). The primary objective of this report was to quantify pain parameters for this population and to measure the impact on health-related quality of life (HRQol) before and after TMR surgery. In this case series, we evaluate the role of TMR in addressing both pain and the impact of the surgery on the patient’s quality of life. Methods: A retrospective analysis of 15 upper limb amputee patients who underwent TMR by the Relimb Unit in London, UK. Participants’ perceptions of pain were determined using the 11-point numerical (Pain) rating scale (NRS) and HRQoL was calculated using the Euroqol EQ-5D-5L questionnaire at two time points, comparing both pain and perceived quality of life pre and post surgery. The Wilcoxon Signed Rank Test was used for the NRS data and a paired sample t-test was used for the EQ-VAS data. Results: A total of 15 patients completed the evaluation. We observed statistically significant reductions in both PLP (pre-operative mean: 7.6, post-operative mean: 2.7, P < 0.05) and NP (pre-operative mean: 6.4, post-operative mean: 2.5, P < 0.05) in these patients. Similarly, HRQoL observed on the EQ-VAS scale demonstrated a significant improvement in quality of life, from 68 pre-operatively to 78 post-procedure (P < 0.05). Conclusion: This is the first quantified evaluation of changes in HRQoL after TMR surgery for upper limb amputation. There appears to be a significant improvement in both HRQoL and overall perception of pain. This finding may have important implications for funding and national resource allocation for TMR surgery.
Risk Management and Rate in Growing of Profit-Sharing Financing
Authors: Junaini Irawati , Iqbal Muhammad , Masili Sabrina Amanda , Kurniawati Dian , Ridarmeli
Published: March 2023

As a main characteristic of Islamic banks, profit-sharing financing (PsF) has an actual influence on driving the economy in the real sector. A PsF using mudharabah and musyarakah contract is mostly channeled to fund productive businesses. This study tries to find out how the Islamic bank performance reflected by credit risk, profit-sharing rate, and liquidity can increase the PsF growth in Islamic banks. Using a quantitative approach through regression analysis, this study analyzed the impact arising from the improved credit risk, profit-sharing rate, and liquidity on the growth of PsF. The data used is secondary data obtained from statistics on Islamic banking in Indonesia (ranging from the 1st quarter of 2015 to the 4thquarter of 2021). The findings revealed that the Islamic bank performances as represented by credit risk, profit-sharing rate, and liquidity can be an indicator of growth of PsF. A low profit-sharing rate, credit risk, and liquidity risk will encourage PsF growth.
Circuit-Based Approaches for a Superconducting-Like Behavior with High Critical Current Density
Authors: Ishiguri Shinichi
Published: March 2023

In general, a superconductor has zero resistance, although it requires significant refrigeration or high pressures, which prevents it into practical applications. In other words, solving these issues implies main superconducting researches. This paper describes a new type of superconductivity, which is independent for temperatures and which operates without pressures. The principles of the presented system are as follows:First a voltage source, a current source and a load are connected in series. Then, the voltage of the voltage source is adjusted to balance the voltage of the load. Under this condition, the balance of the two voltages provides a zero voltage between the taps of the current source and the generated current from the voltage source becomes zero because of the internal infinite resistance of the current source. As a result, the electric powers generated by the two sources are zero, and therefore, the load cannot generate Joule heating because of energy conservation. However, the current from the current source (not the voltage source) is not zero; therefore, we can predict that the resistance of the load must be zero. As a theory, we derived a new electric field and transient attractive force, which result in a very short coherence of an electron pair because there is not Coulomb repulsive force due to the existence of the above transient attractive force. Note that both the forces are derived by the Poisson equation, which implies that they cannot compatible. Therefore, the pair combination energy from spins becomes extremely strong, which is not destroyed by the normal heat energy. Moreover, every center-of-mass motion of electron pair results in the Bose-Einstein condensation and the macroscopic wave function, which produces the London equation (i.e., the Meissner effect). Moreover, by introducing the equivalent circuit, this paper conducted numerical calculations. As a result, we could derive numerically zero resistance and responses for additional static magnetic fields as a discharged current. Note that this paper has prepared Appendix section, which provides a guide to reproduce actual experiments and preliminary experimental results.
On-Line Evaluation and Monitoring of Security Features of an RO-Based PUF/TRNG for IoT Devices
Authors: Rojas-Muñoz Luis F. , Sánchez-Solano Santiago , Martínez-Rodríguez Macarena C. , Brox Piedad
Published: March 2023

The proliferation of devices for the Internet of Things (IoT) and their implication in many activities of our lives have led to a considerable increase in concern about the security of these devices, posing a double challenge for designers and developers of products. On the one hand, the design of new security primitives, suitable for resource-limited devices, that can facilitate the inclusion of mechanisms and protocols to ensure the integrity and privacy of the data exchanged over the Internet. On the other hand, the development of techniques and tools to evaluate the quality of the proposed solutions as a step prior to their deployment, as well as to monitor their behavior once in operation against possible changes in operating conditions arising naturally or as a consequence of a stress situation forced by an attacker. To address these challenges, this paper first describes the design of a security primitive that plays an important role as a component of a hardware-based root of trust, as it can act as a source of entropy for true random number generation (TRNG) or as a physical unclonable function (PUF) to facilitate the generation of identifiers linked to the device on which it is implemented. The work also illustrates different software components that allow carrying out a self-assessment strategy to characterize and validate the performance of this primitive in its dual functionality, as well as to monitor possible changes in security levels that may occur during operation as a result of device aging and variations in power supply or operating temperature. The designed PUF/TRNG is provided as a configurable IP module, which takes advantage of the internal architecture of the Xilinx Series-7 and Zynq-7000 programmable devices and incorporates an AXI4-based standard interface to facilitate its interaction with soft- and hard-core processing systems. Several test systems that contain different instances of the IP have been implemented and subjected to an exhaustive set of on-line tests to obtain the metrics that determine its quality in terms of uniqueness, reliability, and entropy characteristics. The results obtained prove that the proposed module is a suitable candidate for various security applications. As an example, an implementation that uses less than 5% of the resources of a low-cost programmable device is capable of obfuscating and recovering 512-bit cryptographic keys with virtually zero error rate.
PVL-Cartographer: Panoramic Vision-aided LiDAR Cartographer-based SLAM for Maverick Mobile Mapping System
Authors: Zhang Yujia , Kang Jungwon , Sohn Gunho
Published: March 2023

Mobile Mapping System (MMS) plays a crucial role in generating high-precision 3D maps for various applications. However, the traditional MMS that uses tilted LiDAR (light detection and ranging) has limitations in capturing complete information of the environment. To overcome these limitations, we propose a panoramic vision-aided Cartographer simultaneous localization and mapping (SLAM) system for MMS, named "PVL-Cartographer". The proposed system integrates multiple sensors to achieve accurate and robust localization and mapping. It contains two sub-systems, early fusion and middle fusion. In the early fusion, range-maps are created from LiDAR points in a panoramic image space, facilitating the incorporation of visual features. The SLAM system works with both visual features with and without augmented ranges. In the middle fusion, a pose graph combines camera and LiDAR nodes, with IMU (Inertial Measurement Unit) data providing constraints between each node. Extensive experiments in challenging outdoor scenarios demonstrate the effectiveness of the proposed SLAM system in producing accurate results, even in conditions with limited features. Overall, our proposed PVL Cartographer system offers a robust and accurate solution for MMS localization and mapping.
Norm of Hilbert Operator’s Commutants
Authors: Roopaei Hadi
Published: March 2023

In this study, we prove the norm separating property for the composition of Cesàro 1
and Gamma matrices with their transpose. As a result, we compute the ℓp-norms of six classes of operators that commute with the infinite Hilbert operators. Additionally, we find the norm of 3
Hilbert’s commutants on some well-known sequence spaces.
Risk Connectedness among International Stock Markets: Fresh Findings from a Network Approach
Authors: Choi Ki-Hong , Yoon Seong-Min
Published: March 2023

We analyze the upside and downside risk connectedness among international stock markets. We characterize the connectedness among international stock returns using the Diebold and Yilmaz spillover index approach and compute the upside and downside value-at-risk. We document that the connectedness level of the downside risk is higher than that of the upside risk and that stock markets are more sensitive when the stock market declines. We also find that specific periods (e.g., the global financial crisis, the European debt crisis, and the COVID-19 turmoil) intensify the spillover effects across international stock markets. Our results demonstrate that the EU, Ger-many, and the US acted as net transmitters of dynamic connectedness; however, Japan (JP), China (CH), and India (IN) acted as net receivers of dynamic connectedness during the sample period. These findings provide significant new information to policymakers and market participants.
Integrating Multi-Omics Analysis for Enhanced Diagnosis and Treatment of Glioblastoma: A Comprehensive Data-Driven Approach
Authors: Barzegar Behrooz Amir , Latifi-Navid Hamid , Da Silva Rosa Simone C , Swiat Maciej , Wiechec Emilia , Vitorino Carla , Vitorino Rui , Jamalpoor Zahra , Ghavami Saeid
Published: March 2023

The most aggressive primary malignant brain tumor in adults is glioblastoma (GBM), which has poor overall survival (OS). There is a high relapse rate among patients with GBM despite maxi-mally safe surgery, radiation therapy, temozolomide (TMZ), and aggressive treatment. Hence, there is an urgent and unmet clinical need for new approaches to managing GBM. The current study identified modules (MYC, EGFR, PIK3CA, SUZ12, and SPRK2) involved in GBM disease through the NeDRex plugin. Furthermore, hub genes were identified in a comprehensive interaction network containing 7,560 proteins related to GBM disease and 3,860 proteins associated with signaling pathways involved in GBM. By integrating the results of the aforementioned analyses and performing centrality analysis again, eleven key genes involved in GBM disease were identi-fied. ProteomicsDB or Gliovis databases were used for determining the gene expression in normal or tumor brain tissue. The NetworkAnalyst and the mGWAS-Explorer tools identified miRNAs, SNPs, and metabolites associated with these 11 genes. Moreover, a literature review of recent studies revealed other lists of metabolites related to GBM disease. The enrichment analysis of iden-tified genes, miRNAs, and metabolites associated with GBM disease was done using ExpressAna-lyst, miEAA, and MetaboAnalyst tools. Further investigation of metabolite roles in GBM was done through the pathway, joint pathway, and network analyses. The results of this study identified 11 genes (UBC, HDAC1, CTNNB1, TRIM28, CSNK2A1, RBBP4, TP53, APP, DAB1, PINK1, and RELN), five miRNAs (hsa-mir-221-3p, hsa-mir-30a-5p, hsa-mir-15a-5p, hsa-mir-130a-3p, hsa-let-7b-5p), six metabolites (HDL, N6-acetyl-L-lysine, cholesterol, formate, N, N-dimethylglycine/xylose and X2. piperidinone) and 15 distinct signaling pathways that play an indispensable role in the GBM disease development. To establish early diagnostic methods and plan personalized GBM treatment strategies, the identified top genes-miRNAs and metabolite signatures can be targeted.
Research on Tractor Active Seat Suspension Based on Model Predictive Control
Authors: Zhao Sixia , Qu Guangchao , Liu Mengnan , Chen Xiaoliang , Gao Zhi , Xu Liyou
Published: March 2023

In order to reduce the influence of ground vibration generated by tractor during driving and operation on driving stability and driver ride comfort, this paper proposes a control method of tractor active seat suspension based on model predictive control. By establishing a 3-degree of freedom tractor active seat suspension model and a ground excitation input model, a new model predictive controller for the active seat suspension system is designed. The vertical acceleration of the seat center of mass, the seat suspension stroke and the tire dynamic displacement are optimized by limiting the dynamic deflection of the seat suspension and the active force output of the actuator. The control model of MPC tractor active seat suspension system is built and its performance is simulated and verified. The results show that compared with the passive seat suspension and the PID seat suspension, the tractor active seat suspension based on model predictive control (MPC) has better damping characteristics and improves ride comfort.
MnO2/Carbon Nanofibers Material as High Performance Anode for Lithium-Ion Batteries
Authors: Ma Dandan , Mu Xin , Zhao Guiqing , Qin Xiangge , Qi Meili
Published: March 2023

High-performance anodes are contributed to nanostructure of transition metal oxides for rechargeable Li-ion batteries (LIBs). In this work, we report the fabrication of high-performance anode materials for lithium-ion batteries, MnO2 nanotube directly grown into fabrics of carbon nanofibers, the MnO2/Carbon nanofibers (CNFs) were investigated by X-ray diffraction, scanning and transmission electron microscopies. When tested as the anode material in LIBs, the MnO2/CNFs exhibit superior performance and excellent long cycling performance with a reversible capacity of 835 mA h g-1 at 0.1 A g-1 after the 133 th cycle, a high initial specific capacity of 1094 mA h g-1 at a current density of 0.1 A g-1. The MnO2/CNFs demonstrates notable specific capacities, specifically, with a coulombic efficiency of 99.5 %, both stability and capacity are conspicuously above literature data. These impressive results indicate that MnO2/CNFs has great potential for high-energy and high-power energy storage applications.
Double-Blind Parallel Treatment Randomized Controlled Trial of Prebiotics Efficacy for Severe Acute Malnutrition Children in Southern Punjab, Pakistan
Authors: Batool Munazza , Saleem Javeria , Zakar Rubeena , Iqbal Sanaullah , Shahzad Ruhma , Butt Muhammad Salman , Haider Shahroz , Fischer Florian
Published: March 2023

Prevalence of malnutrition among children under five is alarmingly high in Pakistan. However, there are ready-to-use therapeutic foods (RUTF) available which may be used to treat children with severe acute malnutrition (SAM). This study aims to assess the efficacy of prebiotics as a synergistic additive to RUTF to enhance blood parameters and anthropometric measurements in children with uncomplicated SAM living in Southern Punjab, Pakistan. A double-blind parallel treatment randomized controlled trial was conducted on 204 children aged between 6-59 months. Participants were randomized and allocated to the placebo (n=102) and experimental arms (n=102) at a 1:1 ratio. One group of children were provided RUTF and 4 g prebiotics, while the other group were given RUTF and starch as a placebo. Participants recruited for both arms were given treatment for eight weeks, and then their biochemical and anthropometric outcomes were evaluated. A substantial difference between the mean weight, mid upper arm circumference, haemoglobin, haematocrit, platelet count, mean corpuscular volume, mean corpuscular haemoglobin, and albumin was revealed. Conclusively, supplementation with RUTF and prebiotics has proven to be an efficient, effective and safe therapy for children suffering from SAM to improve their growth and development indicators and reduce the dangers of malnutrition in comparison to RUTF alone.
Channel Emulator Framework for Underwater Acoustic Communications
Authors: Dey Indrakshi , Marchetti Nicola
Published: March 2023

In this paper, we develop a tractable mathematical model and emulation framework for communicating information through water using acoustic signals. Water is considered as one of the most complex mediums to model owing to its vastness and variety in characteristics depending on the scenario, what kind of water-body (lakes, rivers, tanks, sea etc.) and geographical location of the water-body is considered. Our proposed mathematical model involves the concept of damped harmonic oscillators to represent the medium (water) and Milne’s oscillator technique to map the interaction between the acoustic signal and water. Wave equations formulated for acoustic pressure and acoustic wave velocity are used to characterize the travelling acoustic signal. Signal strength, phase shift and time-delay generated from the mathematical model are fed to a Simulink-based emulator framework to generate channel samples and channel impulse responses. The emulator uses wide sense stationary uncorrelated scattering (WSSUS) assumption and finite sum-of-sinusoids (SOS) with uniformly distributed phase to generate the channel samples. Using the emulator platform it is possible to generate amplitude variation profile, Doppler shift and spread experienced by any travelling signal through different underwater communication scenarios. Such an emulator platform can be used to simulate different communication scenarios, underwater network topologies, data to train different learning models and predict performance of different modulation, multiplexing, error correction and multi-access techniques for underwater acoustic communications (UWAC) systems.
Role of surface-enhanced Raman spectroscopy of blood plasma in the diagnosis of endometrial pathological conditions
Authors:   I.M.Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation, Zuev V.M. , Lystsev D.V. ,   I.M.Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation, Artemyev D.N. ,   Samara State Medical University, Samara, Russian Federation, Bratchenko L.A. ,   Samara State Medical University, Samara, Russian Federation, Kukushkin V.I. ,   Osipyan Institute of Solid State Physics, Russian Academy of Sciences (ISSP RAS), Chernogolovka, Russian Federation, Shatskaya A.A. ,   Samara State Medical University, Samara, Russian Federation, Fedorova T.A. ,   V.I.Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russian Federation, Bystrykh O.A. ,   V.I.Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russian Federation
Published: March 2023

Objective. To study the efficacy of surface-enhanced Raman spectroscopy of blood plasma in the diagnosis of endometrial pathologies. Materials and methods. Plasma samples from 48 women aged 22 to 63 years were examined using surface-enhanced Raman spectroscopy (polyp: 31 samples, hyperplasia: 10 samples, control: 7 samples). Three spectra were recorded for each sample. The analysis of spectral characteristics of the colloidal medium with dried samples was performed on a test bench consisting of a spectrometric system (RamanLife RL785, FOTON-BIO LLC, Russia) based on a CCD detector and microscope (ADF U300, ADF, China). A silver substrate based on dried silver colloid was used as SERS substrate to realize the effect of Raman signal amplification. Results. The accuracy of differentiating endometrial polyps from the control group and endometrial hyperplasia for the calibration and validation sets was 83% and 81%, respectively (sensitivity: 62%, specificity: 91% for the validation set). The accuracy of differentiating the control group from endometrial hyperplasia and polyp was 64% and 71%, and hyperplasia from the control group and polyp was 64% and 67%, respectively. Conclusion. This study demonstrated the possibility of using Raman spectroscopy in clinical practice to diagnose endometrial pathologies. Key words: hyperplasia, discriminant analysis, projection to latent structures, blood plasma, surface-enhanced Raman spectroscopy, polyp
INVENTARISASI MENUJU DIGITALISASI KOLEKSI MUSEUM BAHARI DKI JAKARTA
Authors: Lestari Octavia  , Lilis Setyowati  , Erma Triawati Christina  , Ali Akbar  , Sandhi Prajaka  , Vega Valentina  , Risnawati  , Nurlaila  , Devy Hellystia  , Mulyadi  , Bertalya
Published: March 2023

Abstract 

Museums located in the Kota Tua area of DKI Jakarta Province are tourist destinations that store collections related to the maritime world of Indonesia in the past. After the fire in early 2018, the Maritime Museum continuously improved its collection information so visitors could relish it. Furthermore, in community service activities held by Gunadarma University, an inventory of museum collections is carried out to collect photos and videos of available displays by optimizing the resources owned by the Maritime Museum. This activity is carried out in five stages: preparation, data collection and compilation of information, database creation, and implementation. The preparation stage was carried out in the first year by collecting information online and in person. In contrast, data collection activities were carried out by taking photos and videos of the collection. In the second year, the collection database and product implementation will be continued to be applied in the Museum. This publication will elaborate on the data collection stage and compilation of information collection. Improving the quality and access to display can reach museum enthusiasts, increasing literacy, which can help increase the visitation for museums in Indonesia, especially DKI Jakarta.

 

Abstrak

Museum-museum yang berada di kawasan Kota Tua Provinsi DKI Jakarta menjadi salah satu destinasi wisata yang menyimpan koleksi terkait dunia bahari Indonesia di masa lampau. Pasca kebakaran di awal tahun 2018, Museum Bahari secara kontinyu memperbaiki informasi koleksi agar dapat dinikmati pengunjung. Universitas Gunadarma dalam kegiatan pengabdian masyarakat melakukan inventaris koleksi museum untuk mengumpulkan foto dan video koleksi yang tersedia sesuai dengan kategori yang disusun Museum Bahari. Secara keseluruhan, kegiatan ini dilakukan dalam lima tahap, yakni persiapan, pengumpulan data dan penyusunan informasi koleksi (inventarisasi), pembuatan database (digitalisasi), dan implementasi. Di tahun pertama, dilakukan tahap persiapan dilakukan dengan mengumpulkan informasi koleksi secara daring dan langsung, sementara kegiatan inventarisasi dilakukan dengan mengambil foto dan video koleksi berdasarkan kategori. Di tahun kedua, dilanjutkan digitalisasi koleksi dan implementasi produk untuk dimanfaatkan pihak Museum Bahari. Dalam publikasi ini, yang akan disampaikan di tahap persiapan dan inventarisasi koleksi berdasarkan kategori. Inventarisasi dan digitalisasi koleksi dapatdigunakan untuk menjangkau peminat museum dari manapun, sehingga dapat mencapai tujuan museum sebagai pusat edukasi, rekreasi, dan konservasi sehingga dapat meningkatkan kecintaan pada museum di Indonesia, khususnya DKI Jakarta.
Plan de negocio para crear una empresa de asesoramiento contable
Authors:   , Calcino Romero Liliana Milagros
Published: March 2023

Se realizó el siguiente Plan de Negocios con la finalidad de crear una empresa de asesoramiento contable, la cual se situará en la ciudad de Lima – Perú, la que está planteada para ser la primera opción por los servicios y la cobertura geográfica que ofrecerá. Se demuestra en el presente trabajo la viabilidad financiera del plan, es decir, se establecerá en el presente estudio las ganancias que se generarán a mediano y largo plazo. El presente plan de negocios además de mostrar el análisis económico-financiero, igualmente presenta un estudio de recursos materiales y humanos que intervendrán necesariamente para ejecutar el proyecto. Se identificaron los siguientes planes, desde varias perspectivas para la ejecución del presente Plan de Negocio: Plan estratégico, Plan de marketing, Plan de operaciones, Plan de recursos humanos y Plan financiero. Cada capítulo representa cada uno de los planes, en el primer capítulo denominado Descripción de la empresa se elabora un análisis del mercado, donde se estudia el entorno de la empresa, y también se agrega un capítulo 7 donde se describen los perfiles del equipo gerencial, aquí se presentará un perfil del equipo de socios el cual lo conforman en grupo de jóvenes emprendedores generadores de este plan de negocios. Del segundo al sexto capítulo se desarrolla bajo el modelo presentado por Weinberger (2009), examinando las variables que integran cada una de las fases del Modelo y en el segundo capítulo se genera el plan estratégico de la Empresa, dando realce a los objetivos planteados.
Plan de negocio para la constitución de la empresa dedicada al servicio en administración, auditoría y asesoría en finanzas en la ciudad de Lima, 3A3 – Administración, Auditoría y Asesoría en Finanzas
Authors:   , Rivera Ponce Amalia Liliana , Pineda Martin Harold Jamess , Crisoles Seis Michael Anderson , Torres Leon Blanca
Published: March 2023

El proyecto de “Servicio de Administración, Auditoría y Asesoría en Finanzas” permite interactuar con empresarios que forman una MYPES, accediendo a descubrir y conocer herramientas administrativas, financieras u otras que requieran, de las cuales adolecen para salir adelante y mantenerse competitivas en un mercado globalizado y tecnológico, por lo que nuestro propósito es brindar un servicio con valor agregado a aquellas empresas y personas naturales con negocio, que carecen de conocimiento en el tema de Administración, Auditoria Administrativa, Contable y Financiera; que sabemos que es preciso e importante para el desarrollo y crecimiento como micro o pequeños empresarios, nuestro valor agregado está en dar un servicio personalizado a cada cliente, con visitas programadas, reuniones en línea para dar soporte sobre el servicio contratado con nuestra representada, estamos enfocados en la atención oportuna y puntual a todo lo ofrecido para que los clientes puedan aprovechar las oportunidades financieras, tributarias y comerciales; siendo estos puntos claves en todo tipo de empresas para su desarrollo. Asimismo, el control interno otro punto clave en todo tipo de procesos. La permanencia de una empresa en el mercado depende de su organización y de lo bien informado que estén su gerentes y jefes para una correcta toma de decisiones.
Adaptación del Cuestionario de Depresión (CDS) de Lang y Tisher a una muestra de niños y adolescentes de una institución educativa pública del distrito de Chorrillos
Authors:   , Llancachahua Pezo Silvia Victoria , Ochoa Almeyda Sara Isabel , Vasquez Abatte Gerson Alexander
Published: March 2023

La depresión afecta a la salud mental de un ser humano, y más en la etapa evolutiva, siendo las etapas más críticas la niñez y adolescencia lo cual puede generar conductas que son dañinas para su salud física como psicológica en diversos contextos que pueda experimentar el menor.Está presente investigación adapta la “escala de depresión para niños y adolescentes CDS de Lang y Tisher” a una población de estudiantes desde 3er grado de primaria hasta 3er año de secundaria siendo una muestra de 350 participantes, y un muestreo no probabilístico, siendo un estudio descriptivo y de diseño psicométrico. Se utilizó el programa estadístico SPSS para el respectivo análisis. La prueba alcanza una confiabilidad aceptable y significativa mediante el coeficiente alfa de Cronbach (0.94), así mismo se procedió la confiabilidad por dimensión de la prueba, la dimensión total positivo (0,78) y la dimensión total depresivo (0,95) con una validez de contenido y de constructo, datos que garantizan nuestra investigación. Además, analizando los niveles de depresión a un nivel descriptivo presentes en estudiantes del 3er grado de primaria hasta 3er año de secundaria.
Factores de riesgo para malnutrición aguda severa en niños menores de 5 años en el servicio de pediatría del Instituto de Salud del Niño - San Borja, durante el periodo 2019
Authors:   , Villacorta Contreras Claudia Paola
Published: March 2023

Introducción: La desnutrición aguda afecta al 8% de los niños del mundo. La desnutrición aguda severa (SAM) es una de las principales causas de mortalidad infantil en menores de 5 años. La lucha contra la desnutrición ha sido abordada por el estado peruano a través del “Plan Nacional de Reducción y Control de Anemia en la Población Materno Infantil y la desnutrición Crónica Infantil en el Perú, 2017 – 2021”, diseñado por el Ministerio de Salud del Perú, también cuenta con el “Plan sectorial para contribuir con la Reducción de las desnutrición crónica Infantil y la Anemia en niñas y niños menores de 26 meses, 2017 – 2021” del Ministerio de Desarrollo e Inclusión Social. Objetivos: Establecer factores de riesgo para SAM en niños menores de cinco años, en el servicio de pediatría del Instituto Nacional del Niño San Borja, durante el periodo 2019. Describir las características demográficas, las comorbilidades (anemia, diarrea 15 días previos, infección de vías respiratorias inferiores, edema, ausencia de apetito), las conductas alimentarias (momento inicio de alimentación complementaria, uso de biberón) de los niños menores de 5 años con diagnóstico de malnutrición aguda severa , el tiempo de recuperación luego del tratamiento médico de los niños menores de 5 años con diagnóstico de malnutrición aguda severa, describir la mortalidad de los niños menores de 5 años con diagnóstico de malnutrición aguda severa en el servicio de pediatría del Instituto Nacional del Niño San Borja, periodo 2019. Materiales y métodos: Estudio observacional de casos y control retrospectivo. La muestra fue de 70 pacientes con SAM, 140 controles, niños sin SAM, de 6 a 59 meses…
Constrained Pressure Residual Preconditioner Including Wells for Reservoir Simulation
Authors: Nilsen H. M. , Ahmed E. , Rasmussen A. F. , Bao K. , Skille T.
Published: March 2023

We present a new practical constrained pressure residual (CPR) preconditioner including well degrees of freedom (DOFs).

The action of the new CPR preconditioner applies only to the reservoir DOFs of the linear system, and includes well-reservoir coupling by solving an extended linear system for the pressure. This extended pressure system is similar to the one proposed in Zhou et al. (Comp. geosci 17(2), 2013). The preconditioner is suitable for a linear system which only includes reservoir DOFs as unknowns and where the effect of the wells is included by Schur complement in the linear operator, without explicit fill-in in the matrix.

The main feature is that the pressure system is extended to include well DOFs. The full preconditioner then combines block ILU0 on the reservoir matrix as fine smoother with the new extended pressure CPR system, using standard AMG cycles on the latter. The new preconditioner has been implemented in the open-source reservoir simulator OPM Flow. The approach is compared with several different CPR approaches on conceptual and real-field cases including open benchmark cases, looking at accuracy, tolerances, performance and parallel scalability.

Compared to applying CPR to the reservoir matrix without well fill-in, the new method yields lower linear iteration counts, similar to those that result from applying CPR to the reservoir matrix with well fill-in (explicit Schur complement). However, each iteration is less costly since one avoids the fill-in, which adds k2 extra nonzero matrix elements for a well with k perforations.

An advantage of the approach is that the structural complexity introduced with the well system is included only in the scalar CPR pressure system in a way suitable for algebraic multigrid (AMG) preconditioning. All other complexity of the wells is handled in the linear operators used in the Krylov solvers.

The new method can be implemented in reservoir simulators by building on existing preconditioner components, and can improve simulation times for complex cases, in particular those with many wells and perforations.
Learning to Solve Parameterized Single-Cell Problems Offline to Expedite Reservoir Simulation
Authors: Olawoyin Abdul-Akeem , Younis Rami M.
Published: March 2023

The reservoir simulation system of residual equations is composed by applying a single parameterized nonlinear function to each cell in a mesh. This function depends on the unknown state variables in that cell as well as on those in the neighboring cells. Anecdotally, the solution of these systems relies on both the level of nonlinearity of this single-cell function as well as on how tightly the cell equations are coupled. This work reformulates this system of equations in an equivalent that is only mildly nonlinear. In an amortized offline regression stage, the single-cell equation is solved over a sampling of possible neighboring states and parameters. A neural network is regressed to this data. An equivalent residual system is formed by replacing the single-cell residual function with the neural network, and we propose three alternative algorithms to solve these preconditioned systems. The first method applies a Picard iteration that does not require Jacobian matrix evaluations or linear solution. The second applies a modified Seidel iteration that additionally infers locality automatically. The third algorithm applies Newton's method to the preconditioned system. The solvers are applied to a one-dimensional incompressible two-phase displacement problem with capillarity and a general two-dimensional two-phase flow model. We investigate the impacts of neural network regression accuracy on the performance of all methods. Reported performance metrics include the number of residual/network evaluations, linear solution iterations, and scalability with time step size. In all cases, the proposed methods significantly improve computational performance relative to the use of standard Newton-based solution methods.