bluuebunny/crossref_metadata_2025_split huggingface dataset:
C3S-TTP: A Trusted Third Party for Configuration Security in TOSCA-based Cloud Services
Authors: Oulaaffart Mohamed , Badonnel Rémi , Festor Olivier 
Published: November 2022

Abstract
The large-scale deployment of cloud composite services distributed over heterogeneous environments poses new challenges in terms of security management. In particular, the migration of their resources is facilitated by recent advances in the area of virtualization techniques. This contributes to increase the dynamics of their configuration, and may induce vulnerabilities that could compromise the security of cloud resources, or even of the whole service. In addition, cloud providers may be reluctant to share precise information regarding the configuration of their infrastructures with cloud tenants that build and deploy cloud composite services. This makes the assessment of vulnerabilities difficult to be performed with only a partial view on the overall configuration.We therefore propose in this article an inter-cloud trusted third-party approach, called C3S-TTP, for supporting secure configurations in cloud composite services, more specifically during the migration of their resources. We describe the considered architecture, its main building blocks and their interactions based on an extended version of the TOSCA orchestration language. The trusted third party is capable to perform a precise and exhaustive vulnerability assessment, without requiring the cloud provider and the cloud tenant to share critical configuration information between each other. After designing and formalizing this third party solution, we perform large series of experiments based on a proof-of-concept prototype in order to quantify its benefits and limits.
Effects of perineuronal nets on neural firing properties
Authors: Hanssen Kine Ødegård , Grødem Sverre , Fyhn Marianne , Hafting Torkel , Einevoll Gaute T. , Ness Torbjørn Vefferstad , Halnes Geir 
Published: November 2022

Abstract
The perineuronal nets (PNNs) are sugar coated protein structures that encapsulate certain neurons in the brain, such as parvalbumin positive (PV) inhibitory neurons. As PNNs are theorized to act as a barrier to ion transport, they may effectively increase the membrane charge-separation distance, thereby affecting the membrane capacitance. Tewari et al. (2018) found that degradation of PNNs induced a 25\%-50\% increase in capacitance and a reduction in the firing rates of PV-cells. In the current work, we attempted to reproduce the experiments by Tewari et al. using a selection of computational neuron models, ranging in complexity from a single compartment Hodgkin-Huxley model to morphologically detailed PV-neuron models. In none of these models, the experimentally reported change in capacitance was sufficient to explain the experimentally reported reduction in firing rate. We therefore hypothesized that PNN degradation in the experiments affected cellular reversal potentials and ion channel conductances in addition to the capacitance. In simulations, we explored how various model parameters affected the firing rate of the model neurons, and identified main candidates for explaining the experiments.
Empirical Determination of the Effective Solid Modulus in Organic-Rich Shales
Authors: Spires K. Larkin , Castagna John P. , Omovie Sheyore John 
Published: November 2022

Abstract
Calculating the change in the saturated bulk modulus of a saturated rock as fluid properties change requires a priori selection of an effective bulk modulus of the solid constituents. When mineral moduli are similar, theoretical bounds on the solid modulus are tight. However, when solid properties vary greatly, as in organic-rich shales, bounds on the effective solid modulus result in uncertainty in the predicted change in the saturated bulk modulus of the rock. We use a semi-empirical rock physics model utilizing the Brown-Korringa equation for polymineral assemblages and introduce three parameters to estimate the pore space compressibility, the dry frame compressibility, and the fractional position of the effective solid modulus relative to the Reuss and Voigt bounds. We optimize for these three parameters in seven organic shale formations and find that the Reuss bound for the effective solid material modulus best fits the data when organic content is high. Furthermore, we use this model to fluid substitute to 100% brine saturation and find Gassmann’s equation using the Hill average predicts similar saturated moduli to the semi-empirical Brown-Korringa rock physics model when volume fraction of solid organic matter is less than 5%. However, at higher organic contents, we find that the error using the Gassmann-Hill approach increases, and the semi-empirical Brown-Korringa model better fits the data.
Distribution, sources and risk assessment of metals in dusts from automobile mechanic workshops in Nigeria
Authors: chukwujindu Iwegbue Maxwell Azubuike , Nnanna Cynthia , Ikpefan Joan , Odali Eze , Tesi Godswill , Martincigh Bice 
Published: November 2022

Abstract

This study investigated the concentrations of nine metals such as Cd, Pb, Cr, Ni Cu, Co, Mn, Zn and Fe in dusts from automobile mechanic workshops (AMWs) in the Niger Delta, Nigeria. Samples of dusts were digestion with aqua-regia and analyzed for metals using atomic absorption spectrometry. The levels of metals in the AMW dusts (mg kg− 1) were 0.12 to 4.20 for Cd, 11.3 to 3897 for Pb, 9.05 to 45.3 for Cr, 0.35 to 345 for Ni, 170 to 56390 for Cu, 1.05 to 31.4 for Co, 51.3 to 310 for Mn, 143 to 634 for Zn and 70875 to 258013 for Fe. Metal distribution patterns in dusts from AMWs followed the sequence; Fe > > Cu > Zn > Mn > Pb > Cu > Ni > Co > Cd. The indices for pollution assessment indicated that Cd, Cu, Pb and Zn were the top contaminants in the AMW dusts. The hazard index values obtained for children’s exposure to metal laden dusts from these AMWs were above 1 which implies that children exposure to dusts from AMWs could elicit adverse non-carcinogenic heath effects. The carcinogenic risk values obtained for human exposure to metals in these AMW dusts were above safe levels indicating possibility of inducing cancer or cancer related sickness. The sources of metals in dusts from the AMWs are related to automobiles emissions and discharges from vehicular components.
Simplified Engineering Geomorphic Unit-based Seismic Site Characterization of Detailed Area Plan of Dhaka City
Authors: Hossain Md Shakhawat , Numada Muneyoshi , Mitu Momtahina , Timsina Kishor , Krishna Chaitanya , Rahman Md Zillur , Kamal ASM Maksud , Meguro Kimiro 
Published: November 2022

AbstractStrong ground motion can amplify and prolong due to local site conditions; consequently, it can cause severe damage in poor non-engineered structures. Usually, site response analysis is used to predict strong motion characteristics at the surface. In this study, one-dimensional nonlinear site response analysis is performed based on the prepared simplified engineering geomorphic unit of the Detailed Area Plan (DAP) of Dhaka City. The engineering geomorphic unit-based map was prepared from image analysis and verified with the collected boreholes data and surface geology map. For response analysis, the earthquake time histories are selected from the PEER NGA WEST2 data set, and BNBC 2020 uniform hazard spectrum (UHS) is considered as the target spectrum. In addition, two synthetic time histories are also generated and used for the site response analysis. For the selected earthquake ground motions, the near-surface soil response of the DAP of the Dhaka City area shows de-amplification of acceleration in the short period and amplified acceleration in the long period. The amplified long-period acceleration can cause severe damage in non-engineered long-period structures. The outcome of this study can be used to prepare a seismic risk-sensitive land use plan for the future development of the DAP area of Dhaka City.
Aspen Plus Simulation of Chemical Looping Combustion of Syngas and Methane in Fluidized Beds
Authors: Jasper Micah , Shahbazi Abolghasem , Schimmel Keith , Li Fanxing , Wang Lijun 
Published: November 2022

Abstract
Chemical Looping Combustion (CLC) is a technology that efficiently combines power generation and CO2 capture. In CLC, the fuel is oxidized by a metal oxide called an oxygen carrier (OC). CLC uses two reactors: a fuel reactor and an air reactor. The fuel reactor oxidizes the fuel and reduces the OC. The air reactor oxidizes the reduced OC using air and then the OC is cycled back to the fuel reactor. It is typical for both the fuel and the air reactors to be fluidized beds (FBs).
In this research, an Aspen Plus model was developed to simulate a CLC system. Aspen Plus has recently included a built-in FB unit operation module. To our knowledge, no literature has been reported using this FB module for simulating fluidized bed combustion or gasification. This FB unit process was investigated in Aspen Plus and a kinetic based model was used and compared the simulation results to experimental data and the commonly used Gibbs equilibrium model. The FB unit and the kinetic model well fit the experimental data for syngas and methane combustion. An advantage of this model over other kinetic models in literature is that it uses a calculator for the core shrinking model and does not require the use of external Fortran. All kinetics are transformed into power law rate equations. The reaction rate equations are given for all reactions. A sensitivity analysis of the reaction kinetics was conducted. All data, code, and simulation files are given.
Efficient dye sensitized solar cell based on a composite film of PEDOT:PSS/CuI nanoparticles as counter electrode
Authors: Sharma G. D. , Roy M. S. , Singh S. P. , El-Mansy M. K. , Solimn T. S. 
Published: November 2022

Abstract
Inorganic/organic composite counter electrode comprised of CuI nanoparticles dispersed in PEDOT:PSS used for dye sensitized solar cells (DSSC). Various weight percentages of CuI (2, 5, 10, 15 and 20 wt %) were used to prepare different composite films. Performances of DSSCs with CuI/PEDOT:PSS with various contents of CuI were investigated. After the optimization of composition the composite film CuI (10 wt. %)/ PEDOT:PSS, a power conversion efficiency (PCE) of 4.60 % was achieved for the DSSC using TPA-CN1-R2 metal free dye as sensitizer, which is found to be higher than that of a DSSC with a Pt counter electrode (4.37 %) and PEDOT:PSS (3.00 %). The electrochemical impedance spectroscopy (EIS) and cyclic voltammetry measurements revealed that the composite counter electrode exhibited better catalytic activity, improved reduction rate of tri-iodide, than pristine PEDOT:PSS counter electrode. The homogeneous nature of the CuI/PEDOT:PSS composite film, uniform distribution CuI nanoparticles in its polymer matrix, and large electrochemical surface area of composite film are seen to be the factors for the better photovoltaic performance for DSSC.
Understanding Emergency Room Visits for Nontraumatic Oral Health Conditions in a Hospital Serving Rural Appalachia: Dental Informatics Study
Authors: Khanna Raj K , Cecchetti Alfred A , Bhardwaj Niharika , Muto Bobbi Steele , Murughiyan Usha 
Published: November 2022

Background
In the Appalachian region, a variety of factors will impact the ability of patients to maintain good oral health, which is essential for overall health and well-being. Oral health issues have led to high costs within the Appalachian hospital system. Dental informatics examines preventable dental conditions to understand the problem and suggest cost containment.

Objective
We aimed to demonstrate the value of dental informatics in dental health care in rural Appalachia by presenting a research study that measured emergency room (ER) use for nontraumatic dental conditions (NTDCs) and the associated economic impact in a hospital system that primarily serves rural Appalachia.

Methods
The Appalachian Clinical and Translational Science Institute’s oral health data mart with relevant data on patients (n=8372) with ER encounters for NTDC between 2010 and 2018 was created using Appalachian Clinical and Translational Science Institute’s research data warehouse. Exploratory analysis was then performed by developing an interactive Tableau dashboard. Dental Informatics provided the platform whereby the overall burden of these encounters, along with disparities in burden by age groups, gender, and primary payer, was assessed.

Results
Dental informatics was essential in understanding the overall problem and provided an interactive and easily comprehensible visualization of the situation. We found that ER visits for NTDCs declined by 40% from 2010 to 2018, but a higher percentage of visits required inpatient care and surgical intervention.

Conclusions
Dental informatics can provide the necessary tools and support to health care systems and state health departments across Appalachia to address serious dental problems. In this case, informatics helped identify that although inappropriate ER use for NTDCs diminished due to ER diversion efforts, they remain a significant burden. Through its visualization and data extraction techniques, dental informatics can help produce policy changes by promoting models that improve access to preventive care.
Evaluación de la digestibilidad in vivo de tres dietas diferentes en ovinos de la Universidad de los Llanos (Meta, Colombia).
Authors: Acevedo Juan José , Peñalosa Juliana 
Published: November 2022

Actualmente los productores agropecuarios tienen una predilección por los sistemas de producción ovina, debido a su gran variabilidad en cuanto a producción y demanda, ya que de estos animales se obtiene carne, leche, lana y genética, es por esto por lo que las investigaciones con esta especie tienen un valor productivo para el medio. Ahora bien, se sabe que la nutrición es uno de los aspectos más básicos e importantes que se debe tener en cuenta en una producción y que los valores de digestibilidad tienen repercusiones monetarias para la rentabilidad de estos productores. De esta manera es como esta investigación busca analizar y comparar la calidad nutricional y digestibilidad in vivo de 3 fuentes de alimento diferentes, la gramínea conocida como King grass (Pennisetum purpureum), el Botón de oro (Tithonia diversifolia) y un ensilaje realizado con King grass, melaza y salvado de trigo, en 3 ovinos de raza criolla. El estudio se llevó a cabo en la granja de la Universidad de los Llanos sede Barcelona, ubicada en el kilómetro 12 Vía a Puerto López (Villavicencio, Meta). A cada uno de los ovinos se les suministró un solo tipo de alimento durante 6 días, donde se realizó un periodo de adaptación de 3 días y una toma de datos de los siguientes 3 días. Luego de esto, en el día 7 se llevó al horno una muestra de heces con el fin de estimar sus coeficientes de digestibilidad y la distribución de la energía. En este se determinó el valor nutricional y los coeficientes de digestibilidad de la fibra cruda (FC), la materia seca (MS), la proteína cruda (PC) y la grasa (GR). Además, se estimó el extracto no nitrogenado (ENN), el porcentaje de nutrientes digestible totales (NDT), la energía bruta (EB), la energía digestible (ED) y la energía metabólica (EM). A partir de estos datos se realizaron análisis a la luz de la teoría y la comparación de los datos, es de esta manera como se pudo concluir que el alimento con mejores resultados nutricionales, de los tres suministrados, fue el Botón de oro y que en general los tres alimentos son de buena calidad al compararlos con la teoría.
Memorias IV Encuentro de Investigadores de la Facultad de Ciencias Agropecuarias y Recursos Naturales Universidad de los Llanos
Authors: Facultad de Ciencias Agropecuarias y Recursos Naturales IV Encuentro de Investigadores de la 
Published: November 2022

La Facultad de Ciencias Agropecuarias y Recursos Naturales con el apoyo de los grupos de investigación en: Biotecnología y Toxicología Acuática y Ambiental – BioTox, Farmacología Experimental y Medicina Interna – Élite, Agroforestería, y Agroindustria y Desarrollo realizaron el IV Encuentro de Investigadores de la Facultad de Ciencias Agropecuarias y Recursos Naturales durante el 3 y 4 de agosto del 2022 en el Auditorio Eduardo Carranza, sede Barcelona de la Universidad de los Llanos, Villavicencio, Meta, Colombia.
El Encuentro de Investigadores de la FCAyRN, es un evento académico que se ha realizado desde el año 2013 y que tiene como objetivo general propiciar la socialización de las investigaciones realizadas en la Facultad de Ciencias Agropecuarias y Recursos Naturales de la Universidad de los Llanos, enmarcadas en las cinco líneas de investigación de la FCAyRN, así:

Salud Animal, Agrícola y Ambiental
Producción Agraria
Desarrollo Rural y Territorial
Sistemas de Producción Agroindustrial
Recursos Hidrobiológicos
Rice Production Technology Improvements for Higher Productivity Along with the Sustainable Agriculture Process in the Mekong Delta
Authors: Matsubara Takeo , Thanh Truong Chi , Hieu Ngo Quang , Tinh Nguyen Thanh , Kitaya Yoshiaki 
Published: November 2022

This study examines sustainable agricultural development in the Mekong Delta, Vietnam by focusing on technology improvement for minimizing the environmental load in rice production with sufficient yield and quality. Among rice-producing countries, Vietnam is the third-largest rice export country worldwide. High-yield rice production is still a critical issue in Vietnam. However, in recent years, quality improvement and low environmental load agriculture have been fundamental issues.
In this research, we conducted rice cultivation experiments in 2014, 2015, and 2017 under different conditions of planting density, fertilizer volume, rice variety, use of fertilizer applicator mounted on a transplanter, and use of high-density seedling mat called “Mitsunae.” We conducted 7 seasons with 79 planting patterns in experiments to compare yield, quality, and fertilizer volume in rice production.
As a result of productivity achievement, high-density transplanting does not always produce a high yield. Each performance depends on transplanting density, rice variety, fertilizer volume, or other factors. In general, transplanting machine with a planting width of 25cm achieved a significant yield with short growing duration rice varieties. Those varieties are popular in the Mekong Delta.
We conducted experiments of “high-density seedling mat” called “Mitsunae”, a new nursery technology developed in Japan, to reduce the environmental load and operating costs in rice production. With the “Mitsunae” method, we can reduce the number of rice seedling trays up to three times that of conventional seedling mats. Then, we can minimize the nursery surface area, nursery materials, and total working time, including transplanting time. The “life cycle assessment (LCA)” method is practical for correctly quantifying environmental load reduction. We investigated environmental load reduction caused by “Mitsunae” rice nursery process using LCA method in this research. We could achieve about 20% – 30% reduction of the “greenhouse gas (GHG)” emission volume and economic benefits created by the “Mitsunae” nursery process.
Skeletal, dentoalveolar, and buccal bone changes using hybrid and tooth-borne expanders for RME and SARME in different growth stages
Authors: Kayalar Emre , Fıratli Sonmez , Darendeliler M. Ali , Dalci Kerem , Dalci Oyku 
Published: November 2022

Abstract

Objective
To compare the skeletal, dentoalveolar and buccal bone thickness of tooth–bone-borne (Hybrid-H) and tooth-borne (TB) maxillary expanders used for rapid maxillary expansion (RME) in early and late adolescents and for surgically-assisted RME (SARME) in young adults.

Materials and methods:
This two-centre clinical study included initial and 6 months post-retention CBCT records of 60 patients (27 males, 33 females; mean age 15.7 ± 3.75 years). The cohort was divided into two groups according to the expander type (H or TB) and subdivided into a further three groups determined by cervical vertebrae maturation stages: early adolescents (EA), late adolescents (LA), and young adults (A). EA and LA patients underwent RME and young adults received a SARME.

Results:
The hybrid-designed appliance increased the internal skeletal maxillary width and nasal width more than the TB-designed appliance anteriorly in EA and posteriorly in SARME young adults. The TB expanders tipped and expanded the first premolars more than the Hybrid SARME expanders in young adults and caused a greater reduction in buccal alveolar bone thickness at the level of the first premolars and molars at the three growth stages.

Conclusion
The hybrid expanders, with relatively greater skeletal and nasal widening potential and fewer dentoalveolar side effects, were a favourable alternative to tooth-borne expanders for RME in the early and late adolescents, and for SARME in young adults.
Evaluation of architectural changes in mandibular trabecular and cortical bone pattern after functional treatment
Authors: Eroz Dilaver Barcın , Günaçar Dilara Nil , Kiki Ali 
Published: November 2022

Abstract

Purpose:
To assess the changes in mandibular trabecular and cortical bone following functional appliance treatment through fractal dimension (FD) and cortical thickness (CorT) measurements.

Material and methods
The study was performed on 45 mandibular retrognathia cases. While the treatment group (T) comprised 30 patients treated using a functional appliance for one year during puberty, the control group (C) consisted of 15 patients who did not receive any orthodontic treatment due to insufficient oral hygiene. FD and CorT analyses were bilaterally evaluated for each mandible. FD measurements were performed on the condylar process, the antegonial notch, and ramus regions on panoramic radiographs. A paired t-test was applied for group analysis, before (T1) and after treatment (T2) and, correspondingly, before (C1) and after (C2) controls. In addition, an independent t-test was used to determine differences between the treatment (∆T = T2−T1) and the control group (∆C = C2−C1).

Results
Statistically significant differences were found in the treatment group between the initial and post-treatment FD values of the right (p < 0.05) and left condyles (p < 0.05), and the CorT measurements on the right (p < 0.01) and the left sides (p < 0.05). There was no statistically significant difference in FD parameters in the control group and a significant difference was only found in the left CorT (p < 0.05). A comparison of the treatment and control groups revealed that the changes in FD and CorT measurements were not statistically significantly different between the groups (p > 0.05).

Conclusion:
Mandibular protraction appliances do not produce trabecular bone alteration in the mandibular condyles, the antegonial notch and ramus over a 12-month time period.
Shape-finding in Biophilic Architecture: Application of AI-based Tool
Authors: Viliunas Gediminas , Grazuleviciute-Vileniske Indre 
Published: November 2022

Abstract
The emerging application of AI-based tools in creative practices encourages analysing how these tools could be integrated into ecological architectural design. This research was aimed at identifying the possibilities of applying AI-based tools and approaches for shape-finding in the field of biophilic architectural design. The research encompasses review and analysis of literature, the experiment of shape-finding using AI-based tool VQGAN+CLIP, and the evaluation of generated images according to the system of biophilic design criteria adapted for the purpose of image evaluation. The experiment of shape finding demonstrated that the use of keywords describing the characteristics of natural systems and the VQGAN+CLIP code allow generating unexpected, interesting forms which correspond to some biophilic characteristics. Such forms can be the start of a further creative search for the architect.