bluuebunny/crossref_metadata_2025 huggingface dataset:
Systematic Measurement and Evolution Situation of Coupling Coordination Level between Intensive Cultivated Land Utilization and New-Type Urbanization
Authors: Wang Yafei , Jin Chao , Peng Qingyun , Liu Jing , Wu Xiaohang
Published: September 2022

This study uses the entropy method to measure the comprehensive evaluation index of 30 provincial samples, with the exception of the Tibet, Hong Kong, Macao, and Taiwan regions, of farmland intensive utilization and new-type urbanization in China. This study also builds a coupling coordination model to measure the coupling degree, coordination degree, and relative development degree. The kernel density estimation method and Theil index describe its evolution situation and spatial differences. The results showed that the coupling degree, coordination degree, and relative development degree of cultivated land intensive use and new-type urbanization were highly coupled, barely coordinated, and that cultivated land intensive use lagged, respectively. Kernel density estimation shows that the coupling degree, coordination degree, and relative development degree of cultivated land intensive use and new-type urbanization decrease as a whole and the regional differences increase. Theil index analysis shows that the differences of coupling degree, coordination degree, and relative development degree in eastern, central, and western regions are mainly caused by intragroup differences. Therefore, according to the economic situation and resource endowment conditions of each province and city, the benign interaction between the intensive use of cultivated land and new-type urbanization should be promoted according to local conditions. Food security is an important basis of national security. Cultivated land is not only a key element to ensure food security, but also a strong driving force for promoting high-quality, green, and sustainable development of agriculture and coordinated urban–rural development. By improving agricultural infrastructure and production conditions, China could choose to establish a strict arable land protection system and other measures to improve the level of intensive utilization of cultivated land.
Detection of Floating Garbage on Water Surface Based on PC-Net
Authors: Li Ning , Huang He , Wang Xueyuan , Yuan Baohua , Liu Yi , Xu Shoukun
Published: September 2022

In the detection of surface floating garbage, the existence of complex backgrounds and the small target sizes make the surface floating garbage easy to mis-detect. Existing approaches cannot yet provide a solution to the aforementioned problems and they are typically limited to addressing specific issues. This paper proposes a PC-Net algorithm for floating garbage detection. First, a pyramid anchor generation approach is proposed, which makes the anchor to be generated centrally near the target and reduces the interference of background information in the anchor generation. Then, in the RoI Pooling feature map import stage, the classification map is used as the feature map. This approach generates feature maps with a higher resolution and more distinct features, thereby enhancing the feature information of small targets and enhancing the classification accuracy. Experimental results on floating garbage dataset indicate that the average detection accuracy of the proposed approach is 86.4%. Compared with existing detection approaches, such as Faster R-CNN, YOLOv3, YOLOX, and Dynamic R-CNN, the average accuracy of detection is increased by 4.1%, 3.6%, and 2.8%, respectively.
A New Model Predictive Control Method for Buck-Boost Inverter-Based Photovoltaic Systems
Authors: Danyali Saeed , Aghaei Omid , Shirkhani Mohammadamin , Aazami Rahmat , Tavoosi Jafar , Mohammadzadeh Ardashir , Mosavi Amir
Published: September 2022

This study designed a system consisting of a photovoltaic system and a DC-DC boost converter with buck-boost inverter. A multi-error method, based on model predictive control (MPC), is presented for control of the buck-boost inverter. Incremental conductivity and predictive control methods have also been used to track the maximum power of the photovoltaic system. Due to the fact that inverters are in the category of systems with fast dynamics, in this method, by first determining the system state space and its discrete time model, a switching algorithm is proposed to reduce the larger error for the converter. By using this control method, in addition to reducing the total harmonic distortion (THD), the inverter voltage reaches the set reference value at a high speed. To evaluate the performance of the proposed method, the dynamic performance of the converter at the reference voltage given to the system was investigated. The results of system performance in SIMULINK environment were simulated and analyzed by MATLAB software. According to the simulation results, we can point out the advantage of this system in following the reference signal with high speed and accuracy.
Assessing WELBY Social Life Cycle Assessment Approach through Cobalt Mining Case Study
Authors: Orola Anni , Härri Anna , Levänen Jarkko , Uusitalo Ville , Olsen Stig Irving
Published: September 2022

The interconnected nature of social, environmental, and economic sustainability aspects must be considered in decision-making to achieve strong sustainability. Social life cycle assessment (S-LCA) has been developed to better include social sustainability aspects into life cycle thinking. However, many of the current S-LCA impact assessment approaches have been developed only on a theoretical level, and thus more case studies are needed. We assess the challenges and opportunities of the S-LCA approach through a case study on cobalt mining in the Democratic Republic of the Congo. Data for the case study were collected from scientific literature, reports, newspaper articles, and interview material. The applicability and possible strengths and weaknesses of the WELBY approach for the case were interpreted. The results showed that applying the WELBY approach in practice is possible, even though there is a lack of existing case studies. However, there are several challenges that must be addressed before the approach can be more widely used. The main challenge with the WELBY approach is the overestimation of impacts when adding multiple impact categories, as is recommended in the S-LCA guidelines. More case-specific severity weights should be developed to address this challenge. Moreover, the interpretation of the results from the perspective of informal work should be executed carefully. Even though the WELBY approach is promising, more methodological development is still needed to build a more ethical and reliable S-LCA methodology.
Stress Evolution in Linear Cutting Tests: Laboratory and Numerical Methods
Authors: Liu Jie , Liu Zhaofeng , Jiang Gangyuan
Published: September 2022

Small-scaled linear cutting tests were first performed to study the influence of penetration on fracture characteristics by a CCS (constant cross-section) cutter. The results indicate that the increase in penetration (ranging from 2.5 mm to 5.5 mm) effectively increases chip masses between cuts and further promotes cutting efficiency. To further understand the fracture mechanism for various penetrations, 3D numerical simulations were performed using PFC 3D. The numerical fracture characteristics agree well with laboratory tests. In addition, the dynamic stress evolution analysis clearly shows that the increase in rolling force frequently results in stress concentrations in rock specimens. When stresses concentrate into critical values, fractures occur. Subsequently, these fracture propagations frequently result in stress dissipations and decreases in rolling force. Thus, the relation between the fluctuations of rolling force and the rock fractures is revealed. In addition, the increase in penetration results in the promoted stress concentrations. This phenomenon can explain why the increased penetration can result in severer fractures.
Spatial-Temporal Change Characteristic Analysis and Environmental Risk Evaluation of Pesticide Application in Anhui Province
Authors: Zhou Qi
Published: September 2022

The excessive application of pesticides causes the increase in pesticide residues, and pesticide pollution presents a point-line-plane 3D space pollution trend. This paper takes pesticide application intensity (PAI for short) as the object, adopts spatial autocorrelation theory to analyze the spatial-temporal change characteristics of PAI in Anhui Province from 2003 to 2020, and constructs the environmental risk index method to evaluate pesticide environmental risk, aiming to provide a reference for macro control pesticide dosage, zoning guidance, and agricultural sustainable development in Anhui Province. The following results were obtained: From 2003 to 2020, the PAI in Anhui Province showed a spatial-temporal change process of first increasing and then decreasing, as well as first clustering and then random distribution. Before 2013, the significant hot spots and cold spots of PAI in Anhui Province were located in southern and northern Anhui, respectively. In addition, the scope of both experienced a process of expanding and then contracting. In recent years, there have been no significant hot and cold areas of PAI in Anhui Province. The overall trend of pesticide environmental risk in the provincial cities in Anhui Province decreased. In 2020, pesticide environmental risk in various provincial cities is dominated by medium- and low-risk levels, which are still higher than in 2003. High-risk and extremely high-risk levels are mainly concentrated in Huainan and Suzhou in northern Anhui and Chizhou and Huangshan in southern Anhui.
Decoding Collective Action Dilemmas in Historical Precincts of Delhi
Authors: Chauhan Ekta
Published: September 2022

There is a growing understanding that cultural heritage needs to be understood as a “common good”, pivotal to the sustainable development of communities. Cultural goods create multiple value streams for stakeholder groups whose interests and objectives often collide, leading to governance failures. The management of cultural goods can be seen as a collective action problem arising from the interaction of numerous actors. In the first part, the article highlights the importance of analyzing cultural heritage sites and areas as common goods. Within this context, I highlight why collaborative processes of decision-making and planning are crucial for the sustainable conservation of heritage resources and tourism management. In the second section, the paper applies the Institutional Analysis and Development—Network of Adjacent Action Situations (IAD-NAAS) framework to explore collective action dilemmas at Nizamuddin Basti in New Delhi. Application of the framework allows one to explore interrelated governance dilemmas by understanding stakeholder dynamics within governance action situations with interdependent outcomes. The paper concludes with a suggestive framework for a cultural collaborative process keeping the cultural identity of residents as the focal point. While the IAD-NAAS framework is useful in diagnosing the contending interests and their consequences, the IAD framework could also be considered a starting point to define a framework for a collaborative process.
A Review on Rain Signal Attenuation Modeling, Analysis and Validation Techniques: Advances, Challenges and Future Direction
Authors: Alozie Emmanuel , Abdulkarim Abubakar , Abdullahi Ibrahim , Usman Aliyu D. , Faruk Nasir , Olayinka Imam-Fulani Yusuf , Adewole Kayode S. , Oloyede Abdulkarim A. , Chiroma Haruna , Sowande Olugbenga A. , Olawoyin Lukman A. , Garba Salisu , Imoize Agbotiname Lucky , Musa Abdulwaheed , Adediran Yinusa A. , Taura Lawan S.
Published: September 2022

Radio waves are attenuated by atmospheric phenomena such as snow, rain, dust, clouds, and ice, which absorb radio signals. Signal attenuation becomes more severe at extremely high frequencies, usually above 10 GHz. In typical equatorial and tropical locations, rain attenuation is more prevalent. Some established research works have attempted to provide state-of-the-art reviews on modeling and analysis of rain attenuation in the context of extremely high frequencies. However, the existing review works conducted over three decades (1990 to 2022), have not adequately provided comprehensive taxonomies for each method of rain attenuation modeling to expose the trends and possible future research directions. Also, taxonomies of the methods of model validation and regional developmental efforts on rain attenuation modeling have not been explicitly highlighted in the literature. To address these gaps, this paper conducted an extensive literature survey on rain attenuation modeling, methods of analyses, and model validation techniques, leveraging the ITU-R regional categorizations. Specifically, taxonomies in different rain attenuation modeling and analysis areas are extensively discussed. Key findings from the detailed survey have shown that many open research questions, challenges, and applications could open up new research frontiers, leading to novel findings in rain attenuation. Finally, this study is expected to be reference material for the design and analysis of rain attenuation.
Optimal Return Freight Insurance Policies in a Competitive Environment
Authors: Li Xiang , Zhou Shu , Ji Guojun , Shi Weina
Published: September 2022

In recent years, return freight insurance (RFI) has emerged as a solution to the problem of returns of goods purchased online. However, although RFI reduces the return costs of both parties and increases the purchase intention of consumers, it also increases the rate of returns and reduces retailers’ profits. Therefore, some online retailers have looked at increasing their service effort as a means of improving the service level and reducing the rate of returns. Considering the impact of retailers’ service efforts on consumer returns, the retailers’ choice of RFI strategy is very important for its profit. It is worth studying how retailers choose RFI policies and the pricing and service effort level in different market environments. In this study, we examine the retailers’ RFI decision-making process, including the influence of retail service effort on consumer returns, by developing three duopolistic-competition game models based on three RFI markets. In this case, we analyze and compare the retailers’ optimal pricing decisions, optimal service effort decisions, and optimal profits in each RFI market, and identify the relationship between the retailers’ optimal decisions and the degree of competition. The result shows that under the market where RFI is provided by the retailer, the retailers’ optimal pricing and optimal service effort level both increase with the increase of market competition. In addition, retailers should consider the impact of market competition and return compensation on consumer demand when making the decision of whether to offer freight insurance.
Zinc-Silver Doped Mesoporous Hydroxyapatite Synthesized via Ultrasonic in Combination with Sol-Gel Method for Increased Antibacterial Activity
Authors: Phatai Piaw , Prachumrak Narid , Kamonwannasit Sirilak , Kamcharoen Agarat , Roschat Wuttichai , Phewphong Sunti , Futalan Cybelle Morales , Khemthong Pongtanawat , Butburee Teera , Youngjan Saran , Millare Jeremiah C. , Prasitnok Orrasa
Published: September 2022

Bone materials are mainly composed of an inorganic constituent called hydroxyapatite (HA). In the current study, mesoporous Zn2+/Ag+ doped hydroxyapatite nanoparticles (Zn-Ag doped HA) with high antibacterial activity were synthesized through ultrasonic coupled sol-gel techniques under calcination temperatures of 600 °C for 4 h and 1100 °C for 1 h. The variance in the molar ratio of Zn2+/Ag+ in Ca9.0Zn1.0−xAgx(PO4)6(OH)2 (x = 0.0, 0.25 to 1.0) and its effects on the chemical and physical properties of the powdered samples were investigated. The results show that the hexagonal framework of HA incorporated both the Zn2+ and Ag+ ions and the rhombohedral structure of β-TCP. The main functional groups of HA and Zn-Ag doped HA samples were hydroxyl and phosphate. All samples have mesoporous characteristics with a Type IV isotherm. The agar well diffusion process was used to examine antibacterial activity against E. coli, P. aeruginosa, S. aureus, B. cereus and B. subtilis. Effective antibacterial activity was displayed by Zn-Ag doped HA. Excellent antibacterial performance was shown by Ca9.0Zn0.75Ag0.25(PO4)6(OH)2 against all tested bacterial strains, except P. aeruginosa. This material showed inhibition zones ranging from 7 to 11 mm, implying that it is a suitable material with an antibacterial action for environmental applications, specifically for water purification.
Competitiveness of Food Industry in the Era of Digital Transformation towards Agriculture 4.0
Authors: Baierle Ismael Cristofer , da Silva Francisco Tardelli , de Faria Correa Ricardo Gonçalves , Schaefer Jones Luís , Da Costa Matheus Becker , Benitez Guilherme Brittes , Benitez Nara Elpidio Oscar
Published: September 2022

Industry 4.0 and its technologies can potentially increase business competitiveness in the age of digital transformation through the implementation of its technologies. These digital technologies are increasingly present in the food industry, characterizing the concept of Agriculture 4.0. This digital transformation is a reality; however, it is unclear which digital technologies are most useful for each industry sector. Therefore, this paper seeks to explore the current state of implementation of digital technologies in different industrial sectors and which digital technologies should be leveraged to increase the performance of the agribusiness system. To do so, we used secondary data from a large-scale survey of 28 industrial sectors, representing 2225 companies in the Brazilian industry. Analyzing the different industrial sectors allowed us to present a framework of digital transformation to boost food industry competitiveness towards Agriculture 4.0. The results show that the food industry usually uses only one digital technology, showing the need for simultaneous and joint investments in the other technologies presented in this research. Public policies must be directed to encourage the expansion of digital technologies in the food industry.
Numerical Simulation of CO2-ECBM Based on Multi-Physical Field Coupling Model
Authors: Li Ziwen , Yu Hongjin , Bai Yansong
Published: September 2022

In this paper, heat injection and CO2 injection are combined, and the influence of coal seam parameters on CO2-ECBM is analyzed to improve the production of CH4 and CO2 reserves and the effective control of both greenhouse gases. A multi-physical field coupling model of CO2-ECBM was established based on Darcy’s law, Fick’s law of diffusion, the extended Langmuir model for adsorption, and the equation of state. Numerical simulation of CO2-ECBM under different coal seam parameters was carried out by COMSOL Multiphysics. The results show that increasing the injection pressure of the CO2 injection well and the initial pressure of the coal seam can effectively increase the gas pressure and concentration gradient, which has a positive effect on improving the extraction concentration of CH4 and the sequestration concentration of CO2 in the coal seam. The increase of the initial temperature of the coal seam will promote the desorption and diffusion of the binary elemental gas, resulting in a decrease in the concentration of coalbed methane and a decrease in the displacement effect. In the process of displacement, the greater the initial permeability, the greater the fracture opening of the coal seam, which is more conducive to the seepage transport of the gas. The closer to the position of the injection well, the better the displacement effect and the lower the permeability rate ratio.
Direct Training via Backpropagation for Ultra-Low-Latency Spiking Neural Networks with Multi-Threshold
Authors: Xu Changqing , Liu Yi , Chen Dongdong , Yang Yintang
Published: September 2022

Spiking neural networks (SNNs) can utilize spatio-temporal information and have the characteristic of energy efficiency, being a good alternative to deep neural networks (DNNs). The event-driven information processing means that SNNs can reduce the expensive computation of DNNs and save a great deal of energy consumption. However, high training and inference latency is a limitation of the development of deeper SNNs. SNNs usually need tens or even hundreds of time steps during the training and inference process, which causes not only an increase in latency but also excessive energy consumption. To overcome this problem, we propose a novel training method based on backpropagation (BP) for ultra-low-latency (1–2 time steps) SNNs with multi-threshold. In order to increase the information capacity of each spike, we introduce the multi-threshold Leaky Integrate and Fired (LIF) model. The experimental results show that our proposed method achieves average accuracy of 99.56%, 93.08%, and 87.90% on MNIST, FashionMNIST, and CIFAR10, respectively, with only two time steps. For the CIFAR10 dataset, our proposed method achieves 1.12% accuracy improvement over the previously reported directly trained SNNs with fewer time steps.
Fractional Series Solution Construction for Nonlinear Fractional Reaction-Diffusion Brusselator Model Utilizing Laplace Residual Power Series
Authors: Alderremy Aisha Abdullah , Shah Rasool , Iqbal Naveed , Aly Shaban , Nonlaopon Kamsing
Published: September 2022

This article investigates different nonlinear systems of fractional partial differential equations analytically using an attractive modified method known as the Laplace residual power series technique. Based on a combination of the Laplace transformation and the residual power series technique, we achieve analytic and approximation results in rapid convergent series form by employing the notion of the limit, with less time and effort than the residual power series method. Three challenges are evaluated and simulated to validate the suggested method’s practicability, efficiency, and simplicity. The analysis of the acquired findings demonstrates that the method mentioned above is simple, accurate, and appropriate for investigating the solutions to nonlinear applied sciences models.
Uranium Concentrations in Private Wells of Potable Groundwater, Korea
Authors: Lee Woo-Chun , Lee Sang-Woo , Jeon Ji-Hoon , Lee Jong-Hwan , Jeong Do-Hwan , Kim Moon-Su , Kim Hyun-Koo , Kim Soon-Oh
Published: September 2022

Uranium (U) is one of the typical naturally occurring radioactive elements enriched in groundwater through geological mechanisms, thereby bringing about adverse effects on human health. For this reason, some countries and the World Health Organization (WHO) regulate U with drinking water standards and monitor its status in groundwater. In Korea, there have been continuous investigations to monitor and manage U in groundwater, but they have targeted only public groundwater wells. However, the features of private wells differ from public ones, particularly in regard to the well’s depth and diameter, affecting the U distribution in private wells. This study was initiated to investigate U concentrations in private groundwater wells for potable use, and the significant factors controlling them were also elucidated through statistical methods. The results obtained from the analyses of 7036 groundwater samples from private wells showed that the highest, average, and median values of U concentrations were 1450, 0.4, and 4.0 μg/L, respectively, and 2.1% of the wells had U concentrations exceeding the Korean and WHO standard (30 μg/L). In addition, the U concentrations were highest in areas of the Jurassic granite, followed by Quaternary alluvium and Precambrian metamorphic rocks. A more detailed investigation of the relationship between U concentration and geology revealed that the Jurassic porphyritic granite, mainly composed of Daebo granite, showed the highest U contents, which indicated that U might originate from uraninite (UO2) and coffinite (USiO4). Consequently, significant caution should be exercised when using the groundwater in these geological areas for potable use. The results of this study might be applied to establish relevant management plans to protect human health from the detrimental effect of U in groundwater.
Emission Characteristics of Air Pollutants and CO2 from 11 Cities with Different Economic Development around the Bohai Sea in China from 2008–2017
Authors: Zhao Zongshan , Liu Qingyang , Lan Jing , Li Yaru
Published: September 2022

Cities around the Bohai Sea are one of the main population cluster areas in China, which are characterized by high levels of sustainability performance and human capital, as well as resource-intensive industries. In this study, levels of economic development metrics and emissions of air pollutants (BC, CO, NH3, NOx, OC, PM2.5, PM10, and SO2) and CO2 across eleven cities around the Bohai Sea from 2008 to 2017 were compared to illustrate the potential relationships between air pollutants/carbon emissions and socioeconomic developments. Meanwhile, the associations between the levels of economic development metrics (GDP per capita), emissions, and energy use per GDP have also been examined. Large differences across these 11 cities presenting different economic development levels and energy consumption characteristics have been observed. Cities with development dependable on the consumption of fossil fuels and the development of resource-intensive industries have emitted large amounts of air pollutants and CO2. Furthermore, the emissions and energy use per GDP for all the cities follow environmental Kuznets curves. The comparison results suggested that the developing cities dependable on resource-intensive industries around the Bohai Sea would obtain greater socioeconomic benefits owing to the interregional cooperation policies under top-down socioeconomic development plans and bottom-up technology development, accompanied by reduced emissions of air pollutants and CO2.
Insecticidal Activity of Chitinases from Xenorhabdus nematophila HB310 and Its Relationship with the Toxin Complex
Authors: Liu Jia , Bai Hui , Song Ping , Nangong Ziyan , Dong Zhiping , Li Zhiyong , Wang Qinying
Published: September 2022

Xenorhabdus nematophila HB310 secreted the insecticidal protein toxin complex (Tc). The chi60 and chi70 chitinase genes are located on the gene cluster encoding Tc toxins. To clarify the insecticidal activity of chitinases and their relationship with Tc toxins, the insecticidal activity of the chitinases was assessed on Helicoverpa armigera. Then, the chi60 and chi70 genes of X. nematophila HB310 were knocked out by the pJQ200SK suicide plasmid knockout system. The insecticidal activity of Tc toxin from the wild-type strain (WT) and mutant strains was carried out. The results demonstrate that Chi60 and Chi70 had an obvious growth inhibition effect against the second instar larvae of H. armigera with growth-inhibiting rates of 81.99% and 90.51%, respectively. Chi70 had a synergistic effect with the insecticidal toxicity of Tc toxins, but Chi60 had no synergistic effect with Tc toxins. After feeding Chi60 and Chi70, the peritrophic membrane of H. armigera became inelastic, was easily broken and leaked blue dextran. The Δchi60, Δchi70 and Δchi60-chi70 mutant strains were successfully screened. The toxicity of Tc toxins from the WT, Δchi60, Δchi70 and Δchi60-chi70 was 196.11 μg/mL, 757.25 μg/mL, 885.74 μg/mL and 20,049.83 μg/mL, respectively. The insecticidal activity of Tc toxins from Δchi60 and Δchi70 was 3.861 and 4.517 times lower than that of Tc toxins from the WT, respectively, while the insecticidal activity of Tc toxins from the Δchi60-chi70 mutant strain almost disappeared. These results indicate that the presence of chi60 and chi70 is indispensable for the toxicity of Tc toxins.
Koagulálószerek alkalmazási lehetőségeinek vizsgálata háztartási szürkevízfrakció esetén
Authors: Murguly Zsófia , Bodnár Ildikó
Published: September 2022

Kutatómunkánk során a szintetikusan előállított fürdővizek esetében vizsgáltuk a szennyezőanyagok eltá- volítását különböző koagulálószerek segítségével, és részletesen tanulmányoztuk a kicsapatási-pelyhesítési kezelés mechanizmusát, hatásfokát. Munkánk során két különböző típusú kezelőszerrel [vas(III)-kloriddal és egy polielektrolit típusú kezelőszerrel] végeztünk kísérleteket, és ezek hatásfokát hasonlítottuk össze. Minősí- tő paraméterként elsősorban az ún. zéta-potenciált és annak változását követtük nyomon a többi vízminőségi paraméter analizálása mellett. Kísérleteinkben egy újonnan beszerzett, ún. flokkulátort is használtunk a na- gyobb térfogatú minták kicsapatási-pelyhesítési folyamatainak tanulmányozására. Kutatásunk kiemelt célja a fenntartható vízgazdálkodás elősegítése, az elhasznált fürdővíz újrahasznosítási lehetőségeinek vizsgálata, kísérleti tanulmányozása, modellezése.
Rediseño organizacional y nueva gestión pública: instrumentos en poder del clientelismo en Colombia
Authors: Jiménez-Munive José María , Jiménez-Munive Cayetano , Vivares Jorge Andrés , Jiménez-Vergel René Alejandro
Published: September 2022

El presente artículo muestra un análisis sobre las estrategias de reforma al Estado y la administración pública en los países latinoamericanos planteada por el neoliberalismo en la década de los noventa del siglo XX, las doctrinas sobre Nueva Gerencia Pública (NGP) formuladas en el contexto de la reforma para mejorar el desempeño de la administración pública y el relacionamiento de las doctrinas administrativas con la política. El análisis se hace a partir de tres preguntas orientadoras: 1. ¿Cuál es el contexto de las reformas al Estado y a la administración pública propuestas por el neoliberalismo a finales del siglo XX? 2. ¿Cuáles son las características de las reformas planteadas por la Nueva Gerencia Pública para el rediseño de la administración pública? y, 3. ¿Cómo se articularon las reformas y la nueva gerencia pública con el clientelismo y el patrimonialismo característicos del sistema político? La tesis planteada es que la reforma del Estado y la administración pública se enfocó en la dimensión económica antes que en las instituciones administrativas y terminaron convirtiéndose en instrumentos de fortalecimiento del poder electoral de la élite gobernante colombiana, en detrimento de la función pública, el trabajo decente y los derechos laborales. La metodología es descriptiva y analítica, sirviéndose de la revisión documental para poner a dialogar autores, plantear relaciones entre categorías conceptuales y presentar algunas percepciones y análisis de los autores producto de su experiencia investigativa tipo consultoría.
La gestión educativa como factor de calidad en las instituciones educativas públicas
Authors: Apaza Chávez Madlyn Susana , Rivera Muñoz Jorge Leoncio
Published: September 2022

El gobierno peruano ha implementado diversas “reformas” educativas; sin embargo, no es suficiente el esfuerzo que se hace para enfocar una reforma dirigida a los directivos de las instituciones educativas. Es importante que haya una especialización en gestión para los directores, pues en nuestro país no existe una carrera llamada Administración de la educación, de la práctica pedagógica o de la gestión en sí misma. El presente trabajo tiene como objetivo describir la gestión educativa como factor importante para lograr la calidad en la educación. El tipo de investigación es descriptiva, el objetivo es caracterizar la gestión del director de la Institución Educativa “Gustavo Mohme Llona” del distrito de Puente Piedra en el año 2016. Los resultados demuestran que la gestión del director se puede considerar poco eficiente. En conclusión, las tres dimensiones de la gestión permiten estudiar el funcionamiento de una Institución Educativa y la calidad, como ajuste a un propósito, busca dar autonomía y empoderamiento al director para lograr los objetivos propuestos.
Realidade virtual no equilíbrio de pacientes com paralisia cerebral: meta-análise
Authors: Sales Amanda Eloísa Silva , Souza Josielen Moreira de , Avelino Patrick Roberto , Kiefer Parreiras de Menezes Kênia
Published: September 2022

Introdução. Em crianças com paralisia cerebral (PC), o déficit de equilíbrio aumenta o risco de quedas, afetando o desempenho das atividades da vida diária, mobilidade e participação. Assim, uma proposta de intervenção, a realidade virtual (RV) utiliza exercícios repetitivos e atrativos, com tarefas que visam ganho de equilíbrio, dentre outras funções, que irão possibilitar uma melhor performance. Objetivo. Realizar uma revisão sistemática com meta-análise, investigando os efeitos da RV no equilíbrio de indivíduos diagnosticados com PC. Método. Foram realizadas buscas nas bases Medline, Lilacs, SciELO e PEDro, selecionando ensaios clínicos que abordassem a RV como intervenção fisioterapêutica no equilíbrio de pacientes com PC. A qualidade metodológica dos estudos foi avaliada pela escala PEDro. Para a meta-análise, foi utilizado o programa Comprehensive Meta-Analysis, Versão 3.0. Resultados. Nove estudos foram incluídos na presente revisão. De forma geral, o treino de RV mostrou-se eficaz na melhora do equilíbrio de indivíduos com PC (SMD 0,84; IC95% 0,35 a 1,33; I2=7%; p<0.01). Além disso, na análise de subgrupos em relação ao tipo de grupo controle, o treino de RV se mostrou superior tanto quando comparado à nenhuma intervenção, quanto quando comparado a outras intervenções (SMD 0,74; IC95% 0,13 a 1,36; p<0,05; SMD 1,01; IC95% 0,19 a 1,84; p<0,05, respectivamente). Conclusão: O treino de RV é superior para melhorar o equilíbrio de indivíduos com PC, tanto quando comparado a nenhuma intervenção, como quando comparado a outro tipo de intervenção e deve, dessa forma, ser considerado durante a reabilitação dessa população.
Arts and Techniques in Kalitthokai
Authors: N Bhagushia Begum
Published: September 2022

Man spends the rest of his life walking in the sky with the help of multidisciplinary science. Through multidisciplinary scientific thought, he discovers, demonstrates, and shares the nature and mechanisms of the world through a balanced approach. Although scientific knowledge has existed since time immemorial, it is true that modern scientific knowledge was founded by the efforts of Europe. Technology progresses through scientific knowledge. The basis of the path of scientific knowledge is the philosophy of the world. This is explained in the Encyclopedia of Indian Philosophy. They operate on the belief that we can know the nature of scientific knowledge. The scientific techniques that arise in their minds are published by scholars in their respective fields. Similarly, Kalitthokai's book elaborates on the intricate and versatile scientific work found in house construction, clothing, selling flowers, selling milk, protecting millet crops, astrology, medicine, calculating time, carpentry, and so on. It is the characteristic of this article to explain it.
Messenger of the Day and Today's Communication
Authors: A Kalaivani
Published: September 2022

When the individual began to live a collective life as a member of society, there was a need to communicate with others. The ancient peoples came into contact with one another in order to express their opinions, learn the opinions of others, and learn about the events that were happening around them. A man has been interested in learning about others. It was this quality that led to the emergence of mass communication. In those days, many tools, such as koothu (Drama), parai (Drum), manuscripts, inscriptions, copper charters, etc., were useful for the messengers to use as communication tools. As the communication of information grew, so did tools. In modern times, we have achieved many benefits due to technology. Phone, radio, television, computer, virtual technology, like that the list of technology used now can be kept on adding. Information relatedness reinforces people's thoughts and values.
A Digital Marketing Strategy Based on Applications to Rise Customer Satisfaction
Authors: Nirmalasari Leli , Alwiyah Alwiyah , Sunarya Po Abas , Panjaitan Aropria Saulina
Published: September 2022

Increasingly advanced facilities are produced by technological advancements, which can be employed as a medium in the growth of a customer satisfaction-focused organization. Applying digital marketing tactics in marketing activities is one example of technology integration. This study aims to investigate the theoretical underpinnings of application-based digital marketing tactics. This kind of research uses a qualitative descriptive methodology. Secondary data from earlier studies' theoretical and empirical results gathered via literature studies is known as research data. The discussion concludes that choosing the best digital marketing strategy entails analyzing internal and external aspects before integrating application-based digital marketing methods into a corporation. This marketing tactic puts a focus on brand communication to raise consumer happiness. Theoretically, application-based digital marketing methods can boost brand trust and loyalty in addition to brand satisfaction.
MODELOS DE ÍNDICE DE SITIO EN PLANTACIONES DE Swietenia macrophylla King EN QUINTANA ROO, MÉXICO
Authors: García-Cuevas Xavier , Hernández-Ramos Jonathan , Tamarit-Urias Juan Carlos , Hernández-Ramos Adrián , Quiñonez-Barraza Gerónimo
Published: September 2022

Para contribuir al éxito de las plantaciones forestales comerciales (PFC) es fundamental conocer la capacidad productiva del sitio. Las curvas de índice de sitio (IS) son útiles para clasificar los terrenos forestales en función de la capacidad productiva para una determinada especie forestal. Los objetivos de este trabajo fueron: 1) ajustar modelos de crecimiento en altura dominante en función de la edad con enfoque de modelos de efectos mixtos y 2) generar curvas de IS para PFCs de Swietenia macrophylla King en Quintana Roo, México. Para el ajuste de los modelos se utilizaron 396 pares de datos de altura dominante-edad de parcelas temporales colectados en plantaciones con edades de siete a 43 años, los modelos de crecimiento ajustados se basaron en Schumacher, Korf, Chapman-Richards y Weibull. Los modelos de Weibull y Chapman-Richards con efecto aleatorio en el parámetro de la asíntota presentaron la mejor calidad de ajuste. La ecuación que presentó el comportamiento gráfico mejor, al sobreponer las curvas generadas contra los datos observados fue la de Chapman-Richards en la forma anamórfica. Con la curva de crecimiento se estimó una altura máxima de 19.26 m. El patrón de crecimiento en altura dominante de Swietenia macrophylla fue modelado satisfactoriamente utilizando datos temporales y un modelo no lineal de efectos mixtos en el parámetro asintótico.
Left atrial appendage closure in a patient with contraindications for transesophageal echocardiography: a case report
Authors: Chugunov I. A. , Davtyan K. V. , Brutyan A. A. , Bazaeva E. V.
Published: September 2022

We present a case of successful intracardiac echocardiography guided left atrial appendage catheter closure in a patient with esophageal varices using deﬂectable delivery sheath to improve ICE-catheter stability.
Pacing maneuvers for supraventricular tachycardia diﬀerential diagnosis: ventricular overdrive pacing
Authors: Gorev M. V. , Nardaia Sh. G. , Rzaev F. G.
Published: September 2022

The accurate tachycardia mechanism veriﬁcation is the most important condition for high eﬀectiveness and safety of the supraventricular tachycardia ablation. Ventricular overdrive pacing - is a simple and useful diagnostic maneuver, frequently used in the supraventricular tachycardia diagnosis. The conditions for its performance and interpretation in the standard and rare situations are described in this review.
Mechatronic system to assist rehabilitation therapies for shoulder and elbow joints: Design, kinematic analysis, building and HMI
Authors: Aguilar-Pereyra Felipe , Alvarado Jorge , Alegria Jesús , Sosa José
Published: September 2022

This work presents a novel application of a system to assist therapies during upper limb rehabilitation. The design and kinematic analysis of a device proposed is presented. Two mechanisms are driven by only one motor develop circular, arc and linear paths in order to move the shoulder and elbow joints in rehabilitation therapies. The first mechanism M1 position, velocity and acceleration are analyzed and its graphics respect to time are obtained. The main goal is to develop a mechatronic system which help to therapists during shoulder or elbow rehabilitation activities and be able to record the patient movements during the session. The methodology includes the study of art state, biomechanic analysis of shoulder and elbow joints, mechanism type selection and kinematic analysis in MATLAB® and its validation in ADAMS®. The main contribution is the proposal of an easy to use mechanism that develop three paths for upper limb rehabilitation. The amplitude and velocity of movements can be programmed, monitored and registered in a computational system and the information used to improve therapy.
Estilos de pensamiento en estudiantes universitarios del área de la salud
Authors: Rivera-Porras Diego , Carrillo-Sierra Sandra Milena , Silva-Monsalve Gloria , Samacá Pulido Edgar Julián
Published: September 2022

Los programas del área de la salud presentan altas exigencias académicas para sus miembros estudiantes. Por tanto, el objetivo de este estudio fue comparar los estilos de pensamiento en los estudiantes de programas de salud de una universidad privada, para comprender las formas de explorar y usar los propios conocimientos, en función de la resolución de problemas o adaptación que demanda la academia. El estudio se desarrolló desde el enfoque cuantitativo, estudio no experimental, descriptivo y comparativo, trasversal, con una muestra de 250 estudiantes de pregrado de la Facultad de Salud. Se aplicó el cuestionario de estilos de pensamiento de Sternberg-Wagner forma corta. Existen diferencias estadísticamente significativas según el Programa Académico (p < 0.05) en los estilos de aprendizaje. Se concluye que la implicación práctica de los resultados radica en implementar metodologías y estrategias a fines con las características cognitivas de los estudiantes por áreas de salud y perfil de egreso, a partir de la combinación de métodos en el proceso de enseñanza aprendizaje.
Study of the competitive adsorption of a mixture of phenol and ammonia nitrogen on activated carbon
Authors: Ахмед С.А.А. , Гогина Е.С.
Published: September 2022

Фенол и аммонийный азот считаются типичными загрязняющими веществами, присутствующими в промышленных сточных водах различных производств. Применение методологии поверхности отклика (RSM) использовано для разработки математической модели одновременной адсорбции фенола и аммонийного азота на активированном угле. Изучено комбинированное влияние рН, дозы угля, начальной концентрации фенола и начальной концентрации аммонийного азота на эффективность адсорбции. Моделирование с применением RSM дало непреобразованную квадратичную модель для удаления фенола и преобразованную квадратным корнем линейную модель для удаления аммонийного азота. Результаты исследования показали положительное влияние увеличения дозы угля на адсорбцию фенола, тогда как увеличение исходной концентрации фенола отрицательно влияло на эффективность его адсорбции. Почти полное удаление фенола было достигнуто в течение 90 минут при рН 4. Кроме того, адсорбция аммонийного азота увеличивалась с ростом рН и дозы угля. Присутствие аммонийного азота отрицательно сказывалось на удалении фенола при повышении рН. Однако присутствие фенола не влияет на адсорбцию аммонийного азота.

Phenol and ammonia nitrogen are considered typical pollutants present in industrial wastewater from various industries. Application of the response surface methodology (RSM) was used to develop a mathematical model for the simultaneous adsorption of phenol and ammonia nitrogen on activated carbon. The combined effect of pH, carbon doses, the initial concentration of phenol, and the initial concentration of ammonia nitrogen on the efficiency of adsorption was studied. Simulation using RSM gave a nontransformed quadratic model for phenol removal and a square root transformed linear model for ammonia nitrogen removal. The results of the study showed a positive effect of increasing the carbon dose on the adsorption of phenol, while an increase in the initial concentration of phenol had a negative effect on the efficiency of its adsorption. Almost complete removal of phenol was achieved within 90 minutes at pH 4. In addition, the adsorption of ammonia nitrogen improved with increasing pH and carbon dose. The presence of ammonia nitrogen adversely affected the removal of phenol with pH increasing. However, the presence of phenol does not affect the adsorption of ammonia nitrogen.
تأثير التدريب الباليستي على القوة الانفجارية للرجلين لدى لاعبي كرة القدم للمتقدمين
Authors: Assistant professor Dr: Moneer Mahmood Jassim  , Assistant professor Dr: Imad Jassim Hashem  , Assistant professor : Moayad Walid Nafeh
Published: September 2022

كان الهدف من البحث هو الكشف عن تأثير التدريب الباليستي على تطوير القوة الانفجارية للرجلين من خلال اعداد منهج في التدريب الباليستي لدى لاعبي كرة القدم, واستخدام هذه التمارين سيطور القوة الانفجارية من خلال اختبار الوثب العمودي, فضلا عن تأثير هذه التدريبات على تطوير مهارة ركل الكرة من خلال اختبار ركل الكرة لأبعد مسافة ممكنة, واجري اختبار قبلي على 20 لاعب من فريق الجامعة التكنولوجية, ثم قسمت العينة إلى مجموعتين ضابطة وتجريبية, بطريقة المزاوجة وخضعت المجموعة التجريبية الى التدريب الباليستي, المكون من تمارين قفز للأعلى والوثب للأمام بسرعة وقوة , مع إضافة أوزان معينة لكل لاعب وحسب مقدرة اللاعب القصوية من خلال حمل ثقل على اكتاف الرياضي عند اداء التمرينات. وظهر من خلال تطبيق المنهج التجريبي ونتائج الدراسة, ان هناك فرق معنوي في اختبار الوثب العمودي وركل الكرة لابعد مسافة, ولصالح المجموعة التجريبية, وكنتيجة لاستخدام التدريب البالستي, استنتج الباحثين ان سبب هذا الفرق المعنوي لصالح المجموعة التجريبية وتطور القوة الانفجارية من خلال تنفيذ تمرينات   التدريبي البالستي, ادى الى تحسين الوثب العمودي وركل الكرة, وقد اوصى الباحثين اجراء المزيد من البحوث في هذا المجال ولفئات عمرية مختلفة, ولمعرفة تأثير التدريب البالستي على عينات اخرى لتلاءم مستوى اللاعب ونوعية الفعالية للحصول على افضل النتائج .
تأثير استخدام اسلوبي التنافس والتضمين في تحسين بعض المهارات الفنية بكرة القدم لطلاب المدارس المتوسطة
Authors: Dr. Hazem Nouri Kateh
Published: September 2022

وتكمن اهمية البحث بدراسة تأثير استخدام بعض الاساليب التدريسية ومنها الاسلوب التنافسي واسلوب التضمين في تعلم المهارات الاساسية بكرة القدم للطلاب, لمعالجة مشكلة البحث المتمثلة في وجود ضعف واضح في تعلم المهارات الاساسية بكرة القدم لدى طلاب المدارس المتوسطة وفق الاساليب المتبعة وقلة في استخدام اساليب حديثة ومتنوعة والتي من شانها تعمل على تعلم وتطور المهارات الاساسية بشكل جيد , اما اهداف البحث فتمثلت في التعرف على مدى تأثير وفاعلية استخدام الاسلوب التنافسي واسلوب التضمين في تعلم وتطوير اهم المهارات الاساسية بكرة القدم .

استخدم الباحث المنهج التجريبي لملائمته لمتغيرات ومشكلة البحث المدروسة, تكون مجتمع الدراسة طلاب الصف الثاني المتوسط في المدارس المتوسطة والثانوية في قطاع مديرية تربية الميمونة التابع إلى مديرية تربية ميسان  للعام الدراسي 2021م – 2022م. , وكانت عينة التطبيق من طلاب الصف الثاني المتوسط في ثانوية الشيخ الطوسي , وتم تحديد الأختبارات المهارية التي تلائم متغيرات البحث المهارية وتطبيقها على عينة التطبيق لغرض الحصول على البيانات المطلوبة جمعها وتحليلها لغرض التوصل إلى النتائج التي من خلالها تموضع اهم الاستنتاجات والتوصيات التي يوصي الباحث باستخدامها لغرض تحقيق الاهداف التعليمية بالشكل  المطلوب.