bluuebunny/crossref_metadata_2025 huggingface dataset:
Ectopic Eye Tooth Management: Photobiomodulation/Low-Level Laser Emission Role in Root Resorption after Fixed Orthodontic Treatment
Authors: Alam Mohammad Khursheed , Ganji Kiran Kumar , Alfawzan Ahmed Ali , Manay Srinivas Munisekhar , Srivastava Kumar Chandan , Chaudhari Prabhat Kumar , Hosni Hala A. , Alswairki Haytham Jamil , Alansari Reem Ahmed
Published: March 2022

Aim: This study evaluates the role of low-level laser emission/photobiomodulation (LE/P) in quantitative measurements of root resorption (QRR). The application of LE/P performed after each orthodontic activation with four types of treatment intervention (TI) on the root resorption (RR) after fixed orthodontic treatment (FOT) of the upper arch with ectopic eye tooth/teeth [EET] was investigated. Materials and Methods: Thirty-two orthodontic patients scheduled for FOT were selected and assigned to the four groups. These were LE/P + Self ligating bracket (SLB), LE/P + Conventional bracket (CB), non-photobiomodulation (non-LE/P) + SLB and non-LE/P + CB. Standard management stages of FOT were followed in the maxilla. Each patient received a single application of LE/P labially/buccally and palatally, a total of five different points were used during each activation or appointment. The main outcome measure was QRR in maxillary anteriors before and after FOT, assessed via cone-beam computed tomography (CBCT) using 3D OnDemand software. Results: Insignificant QRR was found between before and after FOT in SLB, CLB, and LE/P, non-LE/P groups (p > 0.05). QRR in the SLB vs. CB and LE/P vs. non-LE/P group was significantly different in 11, 13, and 23 (p < 0.05). QRR in the LE/P + SLB group (p < 0.05) was significantly different in 11, 13, and 23 than that in the other groups. The most severe QRR was found on 13 (0.88 ± 0.28 mm and 0.87 ± 0.27 mm) and 23 (1.19 ± 0.14 mm and 1.16±0.13 mm) in the CB and non-LE/P group (p < 0.001). LE/P + SLB showed a highly significant superior outcome (p < 0.001) in relation to non-LE/P + CB, the QRR of 23 were 0.813 ± 0.114 mm and 1.156 ± 0.166 mm, respectively. Conclusion: Significantly higher amounts of QRR were found in EET patients after FOT treated with the CB, non-LE/P, and non-LE/P + CB system and warrant further investigation to explore potential specific causes.
Simulation Study of the Impact of COVID-19 Policies on the Efficiency of a Smart Clinic MRI Service
Authors: Sala Francesca , Quarto Mariangela , D’Urso Gianluca
Published: March 2022

The present study examines the impact of the policies against the proliferation of SARS-CoV-2 on outpatient facilities through a direct comparison of the key performance indicators measured in an ordinary and pandemic scenario. The subject of the analysis is a diagnostic imaging department of a Smart Clinic (SC) of Gruppo San Donato (GSD). The operations are virtually replicated through a Discrete-Event Simulation (DES) software called FlexSim Healthcare. Operational and productivity indicators are defined and quantified. As hypothesized, anti-contagious practices affect the normal execution of medical activities and their performance, resulting in an unpleasant scenario compared to the baseline one. A reduction in the number of diagnoses by 19% and a decrease in the utilization rate of the diagnostic machine by 21% are shown. Consequently, the development of strategies that restore balance and improve the execution of outpatient activities in a pandemic setting is necessary.
A Study on the Design of Vision Protection Products Based on Children’s Visual Fatigue under Online Learning Scenarios
Authors: Feng Di , Lu Chunfu , Cai Qingli , Lu Jun
Published: March 2022

The rate of myopia in children is increasing rapidly under online learning scenarios. One of the important reasons for this is incorrect reading and writing posture. Three screen view parameters (viewing angle, viewing height, and viewing distance) are selected as significant influencing factors and blink rating is used as a sign of visual fatigue through literature analysis to study the influence factors of myopia in children, and their correlation. Children’s visual fatigue is evaluated by subjective evaluation and is recording using an eye tracker for changes in the three factors through online learning scenario simulation experiment. An optimal regression model is constructed that illustrates the relationship between the three variables and the visual fatigue levels. The aim of this study is to confirm the quantitative relationship between the screen view parameters and visual fatigue, and to design a child vision protection product on this basis. The test results show there is a linear positive correlation between the viewing angle, viewing height, and viewing distance. A vision protection device has been designed based on this model and was verified through function prototype testing. The result of this study quantified the relationship among screen view parameters and children’s visual fatigue, which provides a theoretical basis for the design of a children’s visual protection device.
Effects of Plastic Shed Cultivation System on the Properties of Red Paddy Soil and Its Management by Reductive Soil Disinfestation
Authors: Liu Liangliang , Long Sha , Deng Baoping , Kuang Jiali , Wen Kexin , Li Tao , Bai Zurong , Shao Qin
Published: March 2022

Red paddy soil is widely distributed in the south of China and has become an important production system for food and cash crops. However, the key factors limiting the quality of this soil type under the plastic shed cultivation system and the effective management strategies are still unclear. In the present study, the physicochemical and microbial properties of red paddy soil in a plastic shed (PS-Soil) and open-air (OA-Soil) cultivation systems were compared. Subsequently, reductive soil disinfestation (RSD) and organic fertilizer treatment (OF) were used to improve the soil properties in a representative PS-Soil. Results showed that the physicochemical and microbial properties in PS-Soil were significantly altered compared with those in the nearby OA-Soil, and those differences were primarily dominated by the cultivation system rather than the sampling site. Specifically, the electrical conductivity (EC) and available nutrients (NO3−-N, NH4+-N, available K, and available P) contents, as well as the abundances of fungi, potential fungal soil-borne pathogens (F. oxysporum and F. solani), and fungi/bacteria were significantly increased in PS-Soil. In addition, the OF treatment could not effectively improve the above-mentioned soil properties, which was mainly reflected by that soil EC and the abundances of potential fungal soil-borne pathogens were considerably increased in the OF-treated soil. In contrast, soil EC and NO3−-N content, the abundances of fungi, F. oxysporum, F. solani, and fungi/bacteria were remarkably decreased by 76%, 99%, 98%, 92%, 73%, and 85%, respectively. Moreover, soil pH, the abundance of bacteria, total microbial activity, metabolic activity, and carbon source utilization were significantly increased in the RSD-treated soil. Collectively, red paddy soil is significantly degraded under the plastic shed cultivation system, and RSD rather than OF can effectively improve the quality of this soil type.
New Insights on Phytoplankton Communities as a Tool for the Sustainable Management of the Musselculture in a Mediterranean Coastal Site
Authors: Caroppo Carmela , Giordano Laura
Published: March 2022

A simulation of phytoplankton dynamics in the coastal shellfish farming site of Mar Piccolo in Taranto (Ionian, Mediterranean Sea) is here reported. This simulation is an element of a greater ecological model produced taking into account the System Approach Framework. The model represents a refinement of a previous phytoplankton tool aimed to better understand the complex mosaic of the ecosystem functioning by providing additional information to support mussel farming. In particular, throughout the years the increase of water temperature and intensive musselculture caused a phytoplankton size and biomass reduction. Results of our simulation evidenced that the phytoplankton tool reproduced the size-fractions (micro-, nano- and picophytoplankton) biomass growth and the mussel (Mytilus galloprovincialis) grazing with a good level of performance. This newly calibrated phytoplankton model aims to provide new insights on modelling scenarios for the sustainable production of mussels.
The Evolution of the Satratoxin and Atranone Gene Clusters of Stachybotrys chartarum
Authors: Ulrich Sebastian , Lang Katharina , Niessen Ludwig , Baschien Christiane , Kosicki Robert , Twarużek Magdalena , Straubinger Reinhard K. , Ebel Frank
Published: March 2022

Stachybotrys chartarum is frequently isolated from damp building materials or improperly stored animal forage. Human and animal exposure to the secondary metabolites of this mold is linked to severe health effects. The mutually exclusive production of either satratoxins or atranones defines the chemotypes A and S. Based upon the genes (satratoxin cluster, SC1-3, sat or atranone cluster, AC1, atr) that are supposed to be essential for satratoxin and atranone production, S. chartarum can furthermore be divided into three genotypes: the S-type possessing all sat- but no atr-genes, the A-type lacking the sat- but harboring all atr-genes, and the H-type having only certain sat- and all atr-genes. We analyzed the above-mentioned gene clusters and their flanking regions to shed light on the evolutionary relationship. Furthermore, we performed a deep re-sequencing and LC-MS/MS (Liquid chromatography–mass spectrometry) analysis. We propose a first model for the evolution of the S. chartarum genotypes. We assume that genotype H represents the most ancient form. A loss of the AC1 and the concomitant acquisition of the SC2 led to the emergence of the genotype S. According to our model, the genotype H also developed towards genotype A, a process that was accompanied by a loss of SC1 and SC3.
Who Owns the City, and Why Should We Care?
Authors: Ismail Mohammad , Warsame Abukar , Wilhelmsson Mats
Published: March 2022

Who owns the city, and why is it important to know? The city constantly makes decisions that affect municipal residents regarding municipal services, land use, and financing. The cost is often linked directly to the municipal residents, but the benefits of some decisions directly affect the property owners and only indirectly affect the municipal residents. On the other hand, the property owners can be residents in the city or the country, but they can also be foreign property owners. Therefore, the distribution of costs will differ from the distribution of benefits. The study aims to investigate and analyse real estate owners in some focus areas in the Stockholm municipality in terms of nationality, patterns of real estate usage, area of properties, and the nature of ownership.
Perceptual Categorization of Hñäñho-Specific Vowel Contrasts by Hñäñho Heritage Speakers in Mexico
Authors: Mulík Stanislav , Carrasco-Ortíz Haydée , Amengual Mark
Published: March 2022

For a large proportion of Mexican Indigenous speakers, it is common for the use of their native languages to shift across generations towards Spanish, the majority language in Mexico. This specific population can be defined as heritage speakers (HS) of their indigenous language, since many of them are Spanish-dominant bilinguals with a strong connection to their minority native language and culture, both of which they might only maintain in their family home where they were raised. The present study investigates the perceptual sensitivity of HS of Santiago Mexquititlán Otomi (Hñäñho) towards sounds of their native language to examine if these HS can accurately categorize Hñäñho vowels or whether their categorization is influenced by their dominant Spanish vowel system. Twelve Hñäñho HS (HHS) and twelve Mexican Spanish monolinguals (MSM) listened to the Hñäñho-specific vowel contrasts /a – ɔ/ and /ɔ – o/ and categorized them among the vowels of their respective mother tongue. Our results indicate that HHS correctly categorize vowels /a/ and /o/, which exist in both Hñäñho and Spanish, but do not accurately categorize the Hñäñho-specific vowel /ɔ/. Moreover, HHS and MSM showed similar patterns in terms of the proportion of /ɔ/ categorized as either /a/ and /o/. These results have implications for the maintenance of language-specific vowel contrasts and the vowel system of a minority language, such as Hñäñho, in the context of language shift towards Spanish in Mexico.
Comparative Drug Release Investigations for Diclofenac Sodium Drug (DS) by Chitosan-Based Grafted and Crosslinked Copolymers
Authors: Chopra Lalita , Thakur Kamal Kishor , Chohan Jasgurpreet Singh , Sharma Shubham , Ilyas R. A. , Asyraf M. R. M. , Zakaria S. Z. S.
Published: March 2022

The hydrogels responding to pH synthesized by graft copolymerization only and then concurrent grafting and crosslinking of monomer N-isopropyl acrylamide (NIPAAM) and binary comonomers acrylamide, acrylic acid and acrylonitrile (AAm, AA and AN) onto chitosan support were explored for the percent upload and release study for anti-inflammatory diclofenac sodium drug (DS), w.r.t. time and pH. Diclofenac sodium DS was seized in polymeric matrices by the equilibration process. The crosslinked-graft copolymers showed the highest percent uptake than graft copolymers (without crosslinker) and chitosan itself. The sustainable release of the loaded drug was studied with respect to time at pH 2.2, 7.0, 7.4 and 9.4. Among graft copolymers (without crosslinking), Chit-g-polymer (NIPAAM-co-AA) and Chit-g-polymer (NIPAAM-co-AN) exhibited worthy results for sustainable drug deliverance, whereas Crosslink-Chit-g-polymer (NIPAAM-co-AA) and Crosslink-Chit-g-polymer (NIPAAM-co-AAm) presented the best results for controlled/sustained release of diclofenac sodium DS with 93.86 % and 96.30 % percent release, respectively, in 6 h contact time. Therefore, the grafted and the crosslinked graft copolymers of the chitosan showed excellent delivery devices for the DS with sustainable/prolonged release in response to pH. Drug release kinetics was studied using Fick’s law. The kinetic study revealed that polymeric matrices showed the value of n as n > 1.0, hence drug release took place by non-Fickian diffusion. Hence, the present novel findings showed the multidirectional drug release rate. The morphological changes due to interwoven network structure of the crosslinked are evident by the Scanning electron microscopy (SEM) analysis.
The Modified Viscosity Approximation Method with Inertial Technique and Forward–Backward Algorithm for Convex Optimization Model
Authors: Hanjing Adisak , Bussaban Limpapat , Suantai Suthep
Published: March 2022

In this paper, we propose a new accelerated algorithm for finding a common fixed point of nonexpansive operators, and then, a strong convergence result of the proposed method is discussed and analyzed in real Hilbert spaces. As an application, we create a new accelerated viscosity forward–backward method (AVFBM) for solving nonsmooth optimization problems of the sum of two objective functions in real Hilbert spaces, and the strong convergence of AVFBM to a minimizer of the sum of two convex functions is established. We also present the application and simulated results of AVFBM for image restoration and data classification problems.
Predicting the Execution Time of the Primal and Dual Simplex Algorithms Using Artificial Neural Networks
Authors: Voulgaropoulou Sophia , Samaras Nikolaos , Ploskas Nikolaos
Published: March 2022

Selection of the most efficient algorithm for a given set of linear programming problems has been a significant and, at the same time, challenging process for linear programming solvers. The most widely used linear programming algorithms are the primal simplex algorithm, the dual simplex algorithm, and the interior point method. Interested in algorithm selection processes in modern mathematical solvers, we had previously worked on using artificial neural networks to formulate and propose a regression model for the prediction of the execution time of the interior point method on a set of benchmark linear programming problems. Extending our previous work, we are now examining a prediction model using artificial neural networks for the performance of CPLEX’s primal and dual simplex algorithms. Our study shows that, for the examined set of benchmark linear programming problems, a regression model that can accurately predict the execution time of these algorithms could not be formed. Therefore, we are proceeding further with our analysis, treating the problem as a classification one. Instead of attempting to predict exact values for the execution time of primal and dual simplex algorithms, our models estimate classes, expressed as time ranges, under which the execution time of each algorithm is expected to fall. Experimental results show a good performance of the classification models for both primal and dual methods, with the relevant accuracy score reaching 0.83 and 0.84, respectively.
On Generalizing Sarle’s Bimodality Coefficient as a Path towards a Newly Composite Bimodality Coefficient
Authors: Tarbă Nicolae , Voncilă Mihai-Lucian , Boiangiu Costin-Anton
Published: March 2022

Determining whether a distribution is bimodal is of great interest for many applications. Several tests have been developed, but the only ones that can be run extremely fast, in constant time on any variable-size signal window, are based on Sarle’s bimodality coefficient. We propose in this paper a generalization of this coefficient, to prove its validity, and show how each coefficient can be computed in a fast manner, in constant time, for random regions pertaining to a large dataset. We present some of the caveats of these coefficients and potential ways to circumvent them. We also propose a composite bimodality coefficient obtained as a product of the weighted generalized coefficients. We determine the potential best set of weights to associate with our composite coefficient when using up to three generalized coefficients. Finally, we prove that the composite coefficient outperforms any individual generalized coefficient.
The Role of Commitment in an Extended Theory of Planned Behavior: Test of Its Mediating Effect with Partial Least Squares Structural Equation Modeling
Authors: Huang Haoyi , Cheng Eddie W. L.
Published: March 2022

The theory of planned behavior (TPB) is popular for studying behavioral intentions. While the direct relationships between the three antecedents (i.e., attitudes toward the behavior, subjective norms, and perceived behavioral control) and intentions in the TPB have been extensively studied, the authors of this study hoped to draw attention to the variable “commitment”. It is interesting to explore whether commitment mediates the relationship between the three antecedents and intentions. Furthermore, this study attempted to investigate if the TPB is appropriate for explaining students’ intentions to learn sustainability. Like many other countries, sustainability has been widely integrated into primary and secondary education in China. However, if students are not interested in or feel that they are not capable of learning sustainability, they may be reluctant to do so. Therefore, this study aimed to examine an extended TPB model with a sample of 181 students from a public junior secondary school in China through factor-based partial least squares structural equation modeling. The results showed that the model could explain the intention to learn sustainability. Specifically, this research found that commitment mediated the relationships of attitudes toward learning sustainability, subjective norms, and perceived behavioral control to the behavioral intention.
Putrescine Production by Latilactobacillus curvatus KP 3-4 Isolated from Fermented Foods
Authors: Hirano Rika , Kume Aiko , Nishiyama Chisato , Honda Ryosuke , Shirasawa Hideto , Ling Yiwei , Sugiyama Yuta , Nara Misaki , Shimokawa Hiromi , Kawada Hiroki , Koyanagi Takashi , Ashida Hisashi , Okuda Shujiro , Matsumoto Mitsuharu , Takagi Hiroki , Kurihara Shin
Published: March 2022

Polyamines are aliphatic hydrocarbons with terminal amino groups and are essential for biological activities. It has been reported that polyamines have health-promoting effects in animals, such as the extension of lifespan by polyamine intake. The identification of a high polyamine-producing bacterium from foods could lead to the development of a novel probiotic candidate. We aimed to identify high polyamine-producing bacteria from food, and isolated and collected bacteria from vegetables and fermented foods produced in Japan. We successfully acquired Latilactobacillus curvatus KP 3-4 isolated from Kabura-zushi as a putrescine producing lactic acid bacteria. Comparing the polyamine synthesis capability of L. curvatus KP 3-4 with that of typical probiotic lactic acid bacteria and L. curvatus strains available from the Japan Collection of Microorganisms, it was found that only L. curvatus KP 3-4 was capable of exporting high levels of putrescine into the culture supernatant. The enhancement of putrescine production by the addition of ornithine, and whole-genome analysis of L. curvatus KP 3-4, suggest that putrescine is synthesized via ornithine decarboxylase. The administration of L. curvatus KP 3-4 to germ-free mice increased the concentration of putrescine in the feces.
Breaking the Restriction Barriers and Applying CRISPRi as a Gene Silencing Tool in Pseudoclostridium thermosuccinogenes
Authors: Ganguly Joyshree , Martin-Pascual Maria , Montiel González Diego , Bulut Alkan , Vermeulen Bram , Tjalma Ivo , Vidaki Athina , van Kranenburg Richard
Published: March 2022

Pseudoclostridium thermosuccinogenes is a thermophilic bacterium capable of producing succinate from lignocellulosic-derived sugars and has the potential to be exploited as a platform organism. However, exploitation of P. thermosuccinogenes has been limited partly due to the genetic inaccessibility and lack of genome engineering tools. In this study, we established the genetic accessibility for P. thermosuccinogenes DSM 5809. By overcoming restriction barriers, transformation efficiencies of 102 CFU/µg plasmid DNA were achieved. To this end, the plasmid DNA was methylated in vivo when transformed into an engineered E. coli HST04 strain expressing three native methylation systems of the thermophile. This protocol was used to introduce a ThermodCas9-based CRISPRi tool targeting the gene encoding malic enzyme in P. thermosuccinogenes, demonstrating the principle of gene silencing. This resulted in 75% downregulation of its expression and had an impact on the strain’s fermentation profile. Although the details of the functioning of the restriction modification systems require further study, in vivo methylation can already be applied to improve transformation efficiency of P. thermosuccinogenes. Making use of the ThermodCas9-based CRISPRi, this is the first example demonstrating that genetic engineering in P. thermosuccinogenes is feasible and establishing the way for metabolic engineering of this bacterium.
RNase III Participates in the Adaptation to Temperature Shock and Oxidative Stress in Escherichia coli
Authors: Lejars Maxence , Hajnsdorf Eliane
Published: March 2022

Bacteria thrive in ever-changing environments by quickly remodeling their transcriptome and proteome via complex regulatory circuits. Regulation occurs at multiple steps, from the transcription of genes to the post-translational modification of proteins, via both protein and RNA regulators. At the post-transcriptional level, the RNA fate is balanced through the binding of ribosomes, chaperones and ribonucleases. We aim to decipher the role of the double-stranded-RNA-specific endoribonuclease RNase III and to evaluate its biological importance in the adaptation to modifications of the environment. The inactivation of RNase III affects a large number of genes and leads to several phenotypical defects, such as reduced thermotolerance in Escherichia coli. In this study, we reveal that RNase III inactivation leads to an increased sensitivity to temperature shock and oxidative stress. We further show that RNase III is important for the induction of the heat shock sigma factor RpoH and for the expression of the superoxide dismutase SodA.
Photovoltaic Properties of ZnO Films Co-Doped with Mn and La to Enhance Solar Cell Efficiency
Authors: Amjad Muhammad , Khan Muhammad Iftikhar , Alwadai Norah , Irfan Muhammad , Ikram-ul-Haq  , Albalawi Hind , Almuqrin Aljawhara H. , Almoneef Maha M. , Iqbal Munawar
Published: March 2022

In the present investigation, ZnO films co-doped with Mn and La were synthesized by the sol–gel technique. XRD analysis revealed that ZnO had a hexagonal structure. Mixed hexagonal and cubic phases appeared in ZnO containing Mn (1%) and La (1.5%). The grain size, d-spacing, unit cell, lattice parameters, atomic packing fraction, volume, strain, crystallinity, and bond length of co-doped ZnO films were determined as a function of doped ion contents. Through UV analysis, it was found that pristine ZnO had Eg = 3.5 eV, and it decreased when increasing the doping concentration, reaching the minimum value for the sample with 1% Mn and 1% La. The optical parameters of the films, such as absorption, transmittance, dielectric constants, and refractive index, were also analyzed. DSSCs were fabricated using the prepared ZnO films. For pure ZnO film, the values were: efficiency = 0.69%, current density = 2.5 mAcm−2, and open-circuit voltage = 0.56 V. When ZnO was co-doped with Mn and La, the efficiency increased significantly. DSSCs with a ZnO photoanode co-doped with 1% Mn and 1% La exhibited maximum values of Jsc = 4.28 mAcm−2, Voc = 0.6 V, and efficiency = 1.89%, which is 174% better than pristine ZnO-based DSSCs. This material is good for the electrode of perovskite solar cells.
Physical Properties and the Reconstruction of Unstable Decahedral Silver Nanoparticles Synthesized Using Plasmon-Mediated Photochemical Process
Authors: Chen Jui-Chang , Chu Yu-Te , Chang Shi-Hise , Chuang Ya-Tin , Huang Cheng-Liang
Published: March 2022

Plasmon-mediated shape transformation from quasi-spherical silver nanoparticles (AgNPs) to silver nanoprisms (AgNPrs) and decahedral silver nanoparticles (D-AgNPs) under irradiation of blue LEDs (λ = 456 ± 12 nm, 80 mW/cm2) was studied at temperatures ranging between 60, 40, 30, 20, 10, and 0 °C. It was found that reaction temperature affected transformation rates and influenced the morphology distribution of final products. The major products synthesized at temperatures between 60 °C and 0 °C were AgNPrs and D-AgNPs, respectively. The D-AgNPs synthesized at such low temperatures are unstable and become blunt when light irradiation is removed after the photochemical synthesis. These blunt nanoparticles with pentagonal multiple-twinned structures can be further used as the seeds to reconstruct complete D-AgNPs after irradiating blue LEDs at various bath temperatures. Our results showed that these rebuilt D-AgNPs are much more stable when at higher bath temperatures. Furthermore, the rebuilt D-AgNPs (edge lengths ~41 nm) can grow into larger D-AgNPs (edge lengths ~53 nm) after the irradiation of green LEDs. Surface-enhanced Raman spectra of CV in AgNP colloids showed that D-AgNP colloids have better SERS enhancements factors than AgNPrs.
Study on the Damping Dynamics Characteristics of a Viscoelastic Damping Material
Authors: Wang Fei , Liao Jianbin , Huang Chaoming , Yu Hongliang , Yan Jin , Li Hanlin
Published: March 2022

Viscoelastic damping materials are an effective means to control structural vibration, and are widely used in various fields. In this paper, we use the Dynamic Mechanical Analysis (DMA) characterization data of viscoelastic damping materials and dynamic characteristics experiments to study the dynamic characteristics of structural damping, analyze and summarize the relationship between the performance of damping materials with temperature and frequency, and explore the influencing factors of damping materials on structural vibration. The research shows that temperature and frequency have great influence on the performance of damping material, and the storage modulus and loss factor change regularly. The modal experiment analysis verifies that the viscoelastic damping material has a good suppression effect on structural vibration, which provides a theoretical basis for the development of damping materials with controllable temperature and frequency domains.
Spatial Layout Optimization and Simulation of Cultivated Land Based on the Life Community Theory in a Mountainous and Hilly Area of China
Authors: Sun Qian , Wu Mingjie , Du Peiyu , Qi Wei , Yu Xinyang
Published: March 2022

China feeds 22 percent of people with 9 percent of the world’s cultivated land. The spatial layout optimization of cultivated land is of strategic significance to the sustainable development of socio-economy and ecology. Based on the integrated protection systematic perspective, namely “life community of mountain, water, forestland, cultivated land, lake, and grassland”, this study explored ways to optimize the spatial layout of cultivated land. Comprehensive Ecological Niche Suitability of Cultivated Land was quantitatively analyzed utilizing a comprehensive ecological niche suitability evaluation model and GIS analytic methodologies. The contribution rates of various natural elements to cultivated land from 2000 to 2020 were determined by the path analysis, and the land-conversion rules for the ecological optimization scenario were developed accordingly. The GeoSOS-FLUS model was used to simulate land use in 2040 under two scenarios: natural and ecological optimization. Results found that the study area showed varied patterns and can be classified into five grades: extreme-suitability, high-suitability, moderate-suitability, low-suitability, and unsuitability zones, based on the Comprehensive Ecological Niche Suitability of Cultivated Land. The evolution of orchard land in the extreme-suitability and high -suitability zone and forestland in the unsuitability zone contributed the most to the area and quality change of cultivated land from 2000 to 2020. Compared with the results of the natural scenario, the simulation results of the ecological optimization scenario in 2040 increased the area of cultivated land, improved the ecological niche suitability, and the coordination between cultivated land and other natural elements.
Research on Land Use Simulation of Incorporating Historical Information into the FLUS Model—Setting Songyuan City as an Example
Authors: Zhang Jun , Liu Zhaoshun , Li Shujie
Published: March 2022

Historical information has been included in the study of land use change, but the historical information is described from the perspective of urban growth. This study selected the relevant angle between historical construction land and current construction land, and quantitatively described history information. This research put forward the STLEI index and STEWMEI index, which quantitatively describes the historical information scores, and draw the following conclusions: the closer the construction land generation period is to the current, the greater the driving effect, and this difference is particularly obvious in the past 5 years. We incorporated historical information into the FLUS model; the FoM index increased by 1.93% compared with the previous inclusion, and the Kappa index increased by 2.45% compared with the previous inclusion, verifying the driving role of historical information in land use change. Historical information has an obvious driving effect in land use change. After that, we used the FLUS model, combined with the Markov chain model, anti–planning concepts, and incorporated historical information to simulate the land use change in 2025. These experiments show that historically generated construction land plays a driving role in current and future land use changes and provides a new perspective for the study of land use simulation.
Neue Daten Bezüglich der Absoluten Chronologie des Frühäneolithikums aus Siebenbürgen
Authors: Luca Sabin Adrian
Published: March 2022

Autorul îsi propune să creeze pentru prima dată o imagine de ansamblu asupra cronologiei absolute a culturii Turdas prin prisma primelor date C14 obŃinute pentru situl turdăsan de la Orăstie– Dealul Pemilor, punct X 2. Aceste date sunt 6070 ± 70 BP – Deb. 5765, 5825 ± 60 BP – Deb. 5762 si 5790 ± 55 BP – Deb. 5775. Materialele datate au fost recoltate din bordeie ale nivelului inferior din acest sit arheologic, acesta prezentând si un nivel mai nou, cu locuinŃe de suprafaŃă. Din punctul de vedere al cronologiei relative, acest sit arheologic se înscrie în seria celor târzii aparŃinând culturii Turdas. După toate datele cronologice absolute existente, faza târzie a culturii Turdas poate fi contemporană cu faza A din cultura Petresti. În final, autorul propune si o datare absolută a culturii Turdas ((6150) 6100– 5900 (5800) BP), ca o bază de lucru până la apariŃia unor date C14 pentru toate fazele acesteia.
Liaisons spirituelles roumaines -françaises (1866-1878 )
Authors: Oncescu Iulian
Published: March 2022

One common image induced by a long series of historical writings is that Romanian-French relations have known a sustained positive trand for centuries, in spite of geographical distance separating the two peoples. These relations developed such based on the latinity shared by both Romanian and French nations.

However, a closer look at these historical developments reveals a ruther fluctuating course, even during the 19',h century arid not only from on epoch to another but even between the different components of these relations in the same period. Such proves to be the case after 1866, when following Alexander I. Cuza’s ousting from power a foreign German prince was installed in Romania in the person of Charles of Hohenzollern.

As a consequence, the political ties with France entered the next decades a period of decline, as well as the economic links. But in the field of cultural relations one can notice a different course. Far from diminishing, on the contrary, these relations reveal an uninterrupted rising.
Les relations du métropoliet Veniamin Costachi avec le prince régnant de la Moldavie, Mihail Sturdza
Authors: Petrescu Iulian
Published: March 2022

Il principe Mihail Stounlza. insique cou il metropolitemo Veniamin Costachi, sono stati molto importanţi per lo surluppo culturale della Moldavia. Anche se tra le due personagi hanno esistito tensioni, queste sono state attenuate par i residtali della loro collahorazione per la fondazione dell' Accademia Mihăileană. Questo fatto preo essere considerata un passa molto importante in quanto riguarda l'arrichezza del livello culturale.
The Orthodox Church and the yielding of Basarabia and Bucovina
Authors: Vasile Costin
Published: March 2022

La connexion entre l' Eglise Orthodoxe Roumaine et le peuple roumain n'est guère l'expression d’un équilibré institutionel. d’après la soit-dite conception simphonique byzantine, mais plutôt la découverte d'une réalité religieusement morale, d’un moyen spirituel d’être, qui enferme la synthèse existentielle de l’esprit et de l ’ethnicité et qui rend divine la vie ethnique elle-même.

C’est ainsi que le Christianisme Orthodox roumain a réalisé à l'aide de ses représentants une vraie théologie du peuple, en élevant et soutenant l’idéal national au niveau d’une dogme.
La réouverture de la Crise Orientale. La position de la préparation diplomatique de la Roumanie pour la proclamation de l' Indépendance (1875-1877)
Authors: Oncescu Iulian
Published: March 2022

Against the background of the "Oriental Crisis". Romanian has initialed a series of diplomatic contacts and actions in order to gel accepted a new status in the international relations : that of an independent state. These contacts were considered when the country preserved its independence. The diplomatic initiatives were useless. The only option left to the Romanian government was entering an alliance with Russia and taking part in the Russian-Ottoman War of 1877-1878. The Romanian aim was thus realized by the means of taking up arms.
Interférences culturelles roumano-italiennes au XIX-ème siècle
Authors: Oncescu Laura
Published: March 2022

Gli contatti culturali tra i romeni e gli italiani atraverso i secoli, hanno rilevalo l'origine comune di questi due populi. Il XIXe secolo ha representato un periodo molto frutuoso di questo putilo di vista. Molti studiosi romeni e italiani hanno a vu to degli preocupazioni comuni. I romeni : Gh. Asachi, Dinicu Golescu, Nicolae Filimon. V. Alecsandri. Ion Codru Drûgufanu, Simian Bămuţiu, Alex. Papiu llarian ed Iosif Hodoş sono stati per un periodo in Italia, escudo preocupaţi di scoprire la loro origine latina. Puoi, abianio molli studiosi italiani die sono stati preocupaţi della nostra origine. Tra di loro ci sono : Giacomo Leopardi, Silvio Pellico. Niccoio Tommaseo, Giovenale Vegezzi Ruscala. Marc Antonio Canini, Aleardo Aleardi, Luigi Cazzavillan. Cosi, possiamo concludere ehe Italia lia estato percepita dei romeni come una sorella piu grande, inentre che Cavour, il ministro italiano durante il proceso d'unifleazione italiano, diceva cite i romeni sono per gli italiani "fratelli di sangue ".
Quelques considérations sur l’évolution des Néandertaliens
Authors: Neaga Iulia
Published: March 2022

Dès la découverte en 1830 d’une calotte crânienne d’enfant, par le naturaliste Philippe – Charles Schmerling, dans la grotte d’Engis (Belgique), à travers le Proche Orient et l’Asie Centrale jusqu'à l’affirmation de la possible existence des Néandertaliens près du Cercle Polaire – les sites de Kroutaya Gora, Khoroutinsk, El’niki II, Bol’shaia Glukhaia et de la grotte Susiluola (Plumet, 2004) – les débats sur l’identité anthropologique, l’héritage matériel, génétique et spirituel de ces représentants de la ligne humaine ne cessent d’enrichir et en même temps d’embrouiller l’ensemble de nos connaissances sur le sujet. Cet article essayera de présenter d’une manière cohérente le cadre actuel de principales pointes de vue regardant les divisions courantes et la chronologie des Néandertaliens.
Un modèle d’analyse de l’art mobilier paléolithique
Authors: Mărgărit Monica
Published: March 2022

Les objets d’art mobilier découverts dans des sites préhistoriques sont souvent «vidés » des informations liées au contexte archéologique. Ils ont été sélectés selon des critères définis surtout par leur caractère exceptionnel par rapport au système de valeurs de la société actuelle. En plus, leur étude a été réduite à la description morphologique, à l’identification des similitudes, en vue de déterminer des «styles » , en vue de les classer dans de différentes catégories typologiques. L’utilisation de taxinomies purement morphologiques pour identifier les types d’objets est à présent intensément critiquée. L’étude des artefacts devrait partir des micro-indices, mais, comme nous n’avons pas de microscope performant, nous établissons les données techniques sur la base des macro-indices. Ainsi, nous pouvons esquisser une fiche générale d’analyse de l’art mobilier paléolithique.
About Brăila’s Beginnings
Authors: Căprăroiu Denis
Published: March 2022

The paper deals with the dawn of the urban life in Braila, one of the most important Romanian medieval towns, located on the Lower Danube, not far from the Black Sea. Br # ila occupies a special position among Romanian towns in what concerns the process of medieval urban genesis in the outer-Carpathian area. The main features emphasized here are the absence of any interference from the state political authorities and the sheer importance of the international trade in the town’s early evolution.
Vlad the Impaler at the Beginning of His Second Reign. Short Considerations on Some Aspects of External Politics
Authors: Cârciumaru Radu
Published: March 2022

Vlad l’Empaleur, devenu pour la deuxième fois prince régnant de la Valachie (1456-1462), devra faire face à une situation externe difficile. Le danger représenté par l’Empire Ottoman a obligé l’Etat Valache, au milieu du 14 e siècle, à adopter une attitude de duplicité dans sa politique extérieure. Ainsi, certaines sources documentaires indiquent le fait que le voïvode, Vlad Tepes a commencé à payer tribut à l’Empire Ottoman dès la fin de l’an 1456. L’échec des négociations avec la Venise et la Hongrie en vue de l’appui du front anti-Ottoman établi dans la zone du Bas Danube, a obligé le prince régnant valache à résister s’appuyant seulement sur ses propres forces pendant la campagne déclenchée par le sultan Mehmed II contre la Valachie en 1462.
Une réévaluation du contexte des découvertes d’ossements humains de la galerie M de la grotte Muierilor à Baia de Fier
Authors: Cosac Marian
Published: March 2022

This paper underlines the possibility that the human remains in section A, belonging to the M Gallery from Muierilor Cave might be contemporaneous with the Aurignacian material found in the Main Gallery. Despite the fact that the human remains were redeposited in section A following a natural mechanical displacement of the sediment, radiometric dating allows the framing of a 29,000-30,000 BP time span of contemporaneity between the human remains and the Aurignacian material. Given this time span, the only similar cultural association of bone points, endscrapers and burins is o be found in Mitoc Malul Galben.
The Palaeolithic site from Cremenea – Poieniţă, Covasna Department. An attempt towards a techno-typological and cultural reassessment
Authors: Mărgărit Dan , Niţă Loredana
Published: March 2022

The researches previously carried out in the Paleolithic site from Cremenea – Poieni " # offered a large lithic assemblage qualified as Aurignacian and a much smaller one, thought as belonging to the Gravettian. The paper here presents a techno-typological analysis performed on the lithic collection found in the History Museum from Bra ov. Unfortunately, the collection lacks an important part of the initial Aurignacian inventory. Consequently, the outcome of the techno-typological analysis neither confirms nor rejects the cultural framing already proposed ; it only succeeds in raising some doubts regarding the Aurignacian designation.
The Soviet Outlook on World Affairs in the Early Cold War
Authors: Stanciu Cezar
Published: March 2022

One of the most important causes of the Cold War was the misunderstanding which occurred among the Soviet Union and the United States concerning to the new world order, following World War II. This study investigates some aspects of the Soviet perception of world affairs in the early Cold War, trying to identify some of the main elements of the Soviet perception. Ideology played an important part in this enmity, as Marxism-Leninism advocated the irreconcilable hostility of the capitalist world regarding the first Socialist country. Also, the American refusal to accept a Soviet sphere of influence in Eastern Europe amplified the ideological susceptibility.
The Romanian-Danish cultural bonds during the 19th century
Authors: Laculiceanu Oana Gabriela
Published: March 2022

Abstract : This article approaches the cultural contacts between the Romanian and Danish peoples during the 19 th century. At this epoch the two people started to discover each other. Culture represented an essential factor in their rapprochement. The attraction between their different cultures is proved by the contacts and cooperation between different Romanian and Danish cultural and scientific institutions, the translation of the most significant literary works, study visits of some of the best scholars and the publishing of descriptive books which allowed spreading valuable information about the two countries and their people.
The Premises of the Romanian-Polish Alliance on the Backdrop of the Military Conflict between Poland, Ukraine and Soviet Russia (1919-1921)
Authors: Anghel Florin
Published: March 2022

Abstract : This article approaches background of the alliance between Romania and Poland in the complex circumstances of the remaking of the political and ideological map of East-Central Europe in the aftermath of World War I. Poland was deeply involved in the process and a war broke out between Warsaw and Moscow, regarded with reserve in Bucharest. From a larger spam of possibilities, a compromise was reached and a political -military alliance concluded between Poland and Romania in March 1921. The new alliance had no roots in historical continuity or tradition. The mutual attitude towards Moscow prevailed in the general framework of relations.
Reshaping Identity through “Official Memories”. The Case of Romania during the Postwar Years of Stalinism (1948-1956)
Authors: Stanciu Cezar
Published: March 2022

The control over mind and identity is a basic feature of a totalitarian regime. The Communist regime in Romania embarked on a lengthy process of rebuilding the national identity according to its own political standards and goals. This article examines the ways in which the Communist regime in Romania tried to erase certain events and cultural aspects from the Romanian collective memory in order to replace them with standards and principles of Soviet origin. In order to achieve its aim, the regime employed vast institutional and propagandistic instruments, meant to penetrate public consciousness and reshape national identity.
Témoignages inédits sur la France pendant la seconde guerre mondiale
Authors: Rujan Ştefania Viorica
Published: March 2022

Résumé : Beaucoup d’écrivains d’origine roumaine et d’expression française ont eu des liens plus ou moins étroits avec la France pendant la seconde guerre mondiale. Les pages qu’ils ont laissées sur cet événement fournissent des informations intéressantes autant pour les historiens que pour les littéraires. La manière dont les écrivains roumains présentent cet évenement, tel qu’il l’ont percu directement, nous aident à mieux comprendre cette époque de l’histoire de France mais aussi leur propre personnalité, leur manière de penser et leurs conceptions idéologiques. Le poète Benjamin Fondane, Roumain d''origine juive, a trouvé une mort atroce dans un camp de concentration, victime des persécutions nazies.
Le Gaullisme, la politique européenne du général Charles de Gaulle dans le procès de la construction européenne
Authors: Panagoreţ Ioana
Published: March 2022

Summary : The article defines the term „ Gaullism”, analyzes it from different perspectives and tries to show its influence as well as France’s position on the construction of Europe, through de Gaulle’s European policy in the process of construction of Europe between the Rome Treaty and the Maastricht Treaty. The principles which underlie de Gaulle’s European policy and the controversial issues within this process are also highlighted.
La grotte Coacăzei (jud. Brașov), entre les anciennes recherches et les fouilles archéologiques de 2008
Authors: Cârciumaru Marin , Niţu Elena-Cristina , Murătoreanu George , Ştefănescu Radu , Dumitraşcu Valentin , Neaga Iulia
Published: March 2022

Résumé : La position géographique spéciale de la grotte Coacăzei, les études faunistiques multiples, d’un côté, et les données stratigraphiques et la succession culturelle souvent controversées, de l’autre côté, nous ont déterminé de reprendre, en 2008, les recherches dans cette grotte. Par les deux sections ouvertes, nous avons essayé de résoudre une partie de ces aspects. L’étude commence par une synthèse des recherches antérieures, et, dans la deuxième partie, nous essayons de réévaluer l’ensemble des recherches effectuées dans cette grotte. La conclusion de toutes ces réévaluations serait que la grotte Coacăzei ne représente pas l’un des sites essentiels pour le Paléolithique de Roumanie.