bluuebunny/crossref_metadata_2025 huggingface dataset:
Památková obnova hradu Litice (okr. Ústí nad Orlicí) v letech 1920–1941
Authors:   Ústav historických věd Fakulty filozofické Univerzity Pardubice, Lacina Martin
Published: December 2023

The paper maps the development of efforts to save and secure the ruins of Litice Castle (District of Ústí nad Orlicí) from 1920 to 1941. Based on available archival sources, the efforts to secure the castle from the 1920s onward and the circumstances surrounding the partial conservation of the castle buildings in 1925 are presented here. Subsequently, the body of the paper is devoted to the extensive conservation and reconstruction works from 1935 to 1941, when the southern castle palace and the adjacent tower were roofed and made accessible and the other castle masonry was extensively conserved. In addition to monitoring the actual progress of the rescue work, attention is paid here to the circumstances that enabled or, on the contrary, prevented their implementation, and to the evaluation of the performed repairs.
Problems of asphalt-resin-paraffin deposits depth assessing in oil transportation pipeline systems
Authors: Dymov Anton Mikhailovich , Marinin Sergey Aleksandrovich , Pokoptsev Alexei Alexeevich , Nugmanov Albert Hamed-Harisovich , Aleksanyan Igor Yurievich
Published: December 2023

During the operation of oil pipelines, an accumulation of asphalt-resin-paraffin deposits is observed on their inner surface, which significantly reduce the efficiency of their operation. These deposits are a significant obstacle to the activities of oil transportation industries. There are permanently significant funds for the cleaning of oil pipelines of the given negative accumulations. In order to determine the prospects and effective implementation of high-cost treatment measures, there is a need for adequate data on the current thickness of deposits in pipelines. This article compactly presents measuring instruments based on radiation, ultrasonic, dielkometric and thermal measurement methods. At the same time, the main requirement for such measuring instruments is metrological reliability, provided through their intellectualization, in other words, providing them with parameters that make it possible to function under conditions of significant uncertainty, failures and a number of subsystems, which is provided by redundancy. Essential requirements are the safety of operation and ease of operation. The most reliable method of measuring the height of the deposits under study now is an ultrasonic method based on the emission of an ultrasound pulse through the pipeline wall and the registration of signals of their reflection from the opposite wall. The positive side of this approach is the possibility of placing a measuring device on the outer surface of the pipeline without destroying its integrity. The authors concluded that thermal and ultrasonic sensors are maximally suitable for solving these problems, the integration of signals from them makes it possible, in addition to reducing the error when measuring the height of deposits, to increase their reliability, as well as to maintain the survivability of the system in case of a malfunction or disconnection of any of the sensors.
Analysis of well completion technologies with sliding couplings installation on the filter
Authors: Lyamina Natalya Fyodorovna , Silkina Tat'yana Sergeevna , Saushin Alexander Zakharovich
Published: December 2023

Mechanical cleaning filters are used to purify water, aqueous solutions, liquid and gaseous substances, hy-drocarbons, air from solid suspended particles of various sizes. Filters used in the field are steel cylindrical apparatuses with a solid and detachable body, inside which slotted or mesh filter partitions are installed, contributing to the purification of water. The principle of operation of mechanical cleaning filters is that when the filtrated medium passes through the filter element, solid particles will be retained. The main feature of such filters is the frequency of action due to the need to clean the filter element manually or automatically using a reverse flow of clean water. With a decrease in productivity, namely, with an increase in the pressure drop between the inlet and outlet, as well as in the lower part of the device, manual or automatic cleaning of the filter element from accumulated contaminants will occur. The article highlights the principle of sliding couplings for filters for water purification, as well as their use in construction. The stages of cleaning and the materials from which sliding filters are made to prevent leakage are considered. Recommendations are given for careful monitoring and following proper procedures to prevent leaks and pressure losses, to ensure the structural integrity and stability of the well, as well as to exclude contamination of the surrounding groundwater. The use of a mechanical filter is proposed, the body of which is designed for heating or fixing thermal insulation and which can be used with small flows of viscous media for cleaning from impurities.
Technology for reducing heat loss during natural gas transportation at compressor stations
Authors: Egorova Elena Valer'evna , Nurmakova Janna Ibragimovna , Silkina Tat'yana Sergeevna
Published: December 2023

By 2050, the world's mineral reserves will account for 59-77% of the total number of energy sources. The share of renewable sources will grow to 20-30%, according to WEC research from 2013. Similar forecasts indicate that renewable energy sources are not enough to meet all the needs of humanity, and minerals will continue to play an important role. However, in order to meet the needs of the future, modern systems and technologies must be used much more efficiently. Gas is the purest of all natural resources, and the ongoing replacement of thermal systems from coal and oil to modern gas is an important step towards reducing greenhouse gases on the planet. Nevertheless, despite this transition, gas transmission systems are still not able to achieve their maximum efficiency, and despite their higher environmental friendliness, they still produce large volumes of harmful substances released into the atmosphere. The recovery of lost heat could increase efficiency and, at the same time, reduce emissions of harmful substances such as carbon dioxide and nitrogen oxides by replacing energy sources. Oil and gas companies are now increasingly moving to the production and use of hydrogen and methane-hydrogen mixtures. Thus, the recovery of lost heat is an incredibly valuable process for both production and nature. Nevertheless, technologies of this kind are only rarely used for processing exhaust gases at compressor stations due to low efficiency. A number of heat recovery technologies are considered to reduce heat loss during transportation of natural gas at compressor stations. The installation of a booster compressor station, which is designed for a specific pressure, is analyzed, adjusting it automatically, thereby reducing heat loss during gas transportation on compressors.
A new species of Planipapillus (Onychophora: Peripatopsidae) that defies the original concept of its genus
Authors: Douch James K. , Reid Amanda L.
Published: December 2023

Douch, J.K. and Reid, A.L. 2023. A new species of Planipapillus (Onychophora: Peripatopsidae) that defies the originalconcept of its genus. Memoirs of Museum Victoria 82: 257–262. Planipapillus Reid, 1996 (Onychophora: Peripatopsidae) is a genus of peripatus or velvet worms from south-eastern Australia, consisting of 12 nominal species, unique in having a patch of reduced papillae on the heads of males. Specimens from Mt Useful, Victoria, that lack this trait were identified as a species of Planipapillus on the basis of morphological and molecular analyses in 1999 and 2001, respectively. That species is herein described as P. absonus sp. nov., and an emended diagnosis for the genus is provided to accommodate this unusual addition. The relationship between modified head papillae and mating is discussed.
Enrique D. Dussel, referente mundial del pensamiento crítico
Authors: Gandarilla José
Published: December 2023

Enrique Dussel
Estimación del Multiplicador del Gasto Público en Ciencia, Tecnología e Innovación
Authors: Bernat Gonzalo
Published: December 2023

En este trabajo se analiza el impacto de la inversión pública en ciencia y tecnología en la economía argentina, basado en la estimación de multiplicadores fiscales para diferentes componentes del gasto público. Se propone una nueva mirada sobre el tema al encontrar un multiplicador estadísticamente significativo para este fin. Los resultados obtenidos en base a este tipo de análisis permiten afirmar que el efecto positivo del gasto público en ciencia y técnica sobre la economía argentina resulta significativo no solo en el corto plazo, impactando en el nivel de actividad, sino también en el largo plazo, a través del efecto de la innovación sobre la productividad, apuntalando la tendencia de crecimiento del PIB.
A definição de Religião de Mark C. Taylor
Authors: MENDES Danilo
Published: December 2023

O objetivo deste artigo é analisar a definição de religião de Mark C. Taylor. Para isso, apresenta essa definição e propõe uma leitura estrutural de seus significados, dividindo-a em três partes. Primeiramente, verifica seu sentido como rede complexa emergente, apontando as bases da teoria da complexidade, da qual o autor se apropria, e aplicando o funcionamento dos sistemas complexos à religião. Em segundo momento, discute o momento constitutivo da religião e sua função enquanto elaboradora de esquemas e padrões de sentimento, pensamento e ação. Por fim, observa como Taylor propõe um momento disruptivo em sua definição, na qual a religião rompe, desloca e desfigura os esquemas e padrões formados anteriormente. Ao contrário do que se poderia pensar, para o autor, esses não são momentos antagônicos da religião, mas são intrincadamente interligados, num movimento alternante quase dialético que modifica as estruturas da religião a todo tempo. Dessa forma, a definição de religião proposta por Taylor estabelece uma mútua dependência entre história e estrutura na teoria da religião.
Green synthesis and characterization of iron nanoparticle using extracted bitter guard leaves used as methylene blue removal
Authors: Lin Thin Phyu , Khaing Kyu Kyu , Htwe Aung Than , Oo May Thazin , Nyunt Su Su Soe
Published: December 2023

Zero-valent iron is a moderately reducing reagent that is both non-toxic and affordable. In the present work, iron nanoparticles were synthesized using bitter guard leaf extract (Momordica charantia L.) (BGL-Fe NP). Using leaf samples from bitter protectant extract, iron nanoparticles were synthesized with secondary metabolites such as flavonoids and polyphenols acting as capping and reducing agents. Polyphenols reduce Fe2+/Fe3+ to nanovalent iron or iron nanoparticles. Iron nanoparticles were synthesized by reducing iron chloride as a precursor with bitter protective leaf extract in an alkaline environment. The obtained BGL-Fe NPs were calcined for 4 h at various temperatures of 400 °C, 500 °C, and 600 °C. The obtained samples were coded as BGL-Fe NPs-4, BGL-Fe NPs-5, and BGL-Fe NPs-6, respectively. The synthesized BGL-Fe NPs were systematically characterized by XRD, SEM, FTIR, UV-Vis and TG-DTA analysis. The obtained BGL-Fe NPs were then used as an adsorbent to remove the aqueous solution of basic methylene blue (MB) dye. MB concentration was monitored using UV-Vis spectroscopy.
filosofía de la mente de Thomas Metzinger:
Authors: Curbera Luis José
Published: December 2023

En el presente artículo hacemos una revisión del método neurofenomenólogico de Thomas Metzinger y su capacidad para responder a problemas habituales de filosofía de la mente y evitar dificultades de otros materialismos. Metzinger define estados mentales en función de estados cerebrales, sin embargo, frente al materialismo eliminativo, sí considera como real la experiencia fenoménica y rechaza su reducción conceptual o epistémica. Esta peculiaridad salva su propuesta de críticas como la de José Ignacio Murillo o Graham Harman, que parecen dirigidas a otros tipos de materialismos. Por ello, consideramos necesario repensar las consecuencias éticas de la tajante negación del libre albedrío y la afirmación de la posibilidad de máquinas artificiales conscientes que conlleva la propuesta de Metzinger
Genotype Variation of Polyphenol Content and Antioxidant Activity of Artemisia balchanorum Krasch. × Artemisia taurica Willd
Authors: Vergun Olena , Svydenko Liudmyla , Grygorieva Olga , Hauptvogel Pavol , Brindza Ján
Published: December 2023

The results of seasonal variation of total polyphenols (TPC), flavonoids (TFC) and phenolic acid (TPAC) accumulation and antioxidant activity of Artemisia balchanorum Krasch. × Artemisia taurica Willd. genotypes from the Kherson Oblast of Ukraine represented in this study. The total polyphenol content was identified by the Folin-Ciocalteu method and ranged from 20.51 to 132.52 mg GAE/g (gallic acid equivalent). The flavonoid content conducted with aluminum chloride reagent ranged from 8.16 to 70.77 mg QE/g (quercetin equivalent) and phenolic acid content determined with Arnova reagent ranged from 6.26 to 38.67 mg CAE/g (caffeic acid equivalent) depending on genotype and stage of growth. The antioxidant activity of investigated genotypes determined by the DPPH (2.2-diphenyl-1-picrylhydrazyl) method (FRSA) varied from 4.68 to 10.38 mg TE/g (Trolox equivalent), molybdenum-reducing power of extracts detected by the phosphomolybdenum method (MRP) and was from 41.43 to 209.93 mg TE/g depending on genotype. The total polyphenol content, flavonoids and antioxidant activity by the phosphomolybdenum method increased from spring vegetation to flowering. The accumulation of phenolic acids and antioxidant activity by the DPPH method was uneven and depended on genotype and stage of growth. It was found a weak correlation between FRSA and TPC (r = 0.189), TFC (r = 0.211), and TPAC (r = 0.111) for genotypes. A strong correlation was found between MRP and TPC (r = 0.703), and TFC (r = 0.657). A moderate correlation was detected between MRP and TPAC (r = 0.481) for genotypes. The obtained data can be used for further breeding work to get genotypes with high antioxidant activity.
Inheritance of Chinese Traditional Music Based on Markov Chain Modelling
Authors: Qi Zhan , Long Jun , Duan Yaoyong
Published: December 2023

In this paper, we first propose a Markov chain-based automatic composition method to construct a song set using classical and traditional music as a sample. Using probability matrices, experiments are conducted to generate pitch and time value sequences, and melodic segments of traditional music are generated using transformation techniques. Secondly, a traditional music digital resource library that integrates multiple functions is constructed by utilizing various information technologies. Finally, based on the existing classification dimensions, the relationship between various types of influencing factors in the inheritance of traditional music was analyzed, and the structure of the questionnaire was initially constructed. The results show that the correlation coefficients between the cultural inheritance of traditional music and its resources, environmental threats, development level, diversified values, public demand, and social cognition are 0.4235, 0.0953, 0.3594, 0.4253, 0.5348, and 0.5224, respectively, and there is a significant positive influence. This paper provides some theoretical and practical guidance for the protection and inheritance of traditional music.
Research on Intelligent and Innovative Teaching Mode of Dance Discipline in Colleges and Universities under the Background of Informatization
Authors: Liu Zhiwei
Published: December 2023

In this paper, we first count the dance action motion information and compute different lengths of dance action videos through the threshold of segmentation as the input of a convolutional neural network. Combined with the two-layer level optimization function, the dance action trajectory values can be solved. The dance action trajectory values are compared with the standard action in terms of point distance, which suggests the location of the error for dance teaching assistance training. Finally, based on the three-dimensional data capture to establish a three-dimensional dance teaching model, the dance student’s various parts of the movement error results only between 0.25-2.21, the movement trajectory and the Kinect standard movement trajectory curve is highly fitted, and the dance amplitude, dance strength, dance consistency, dance standardization degree of performance is excellent.
Applying Optimisation Theory in English Language Teaching in Practice
Authors: Dang Feifei
Published: December 2023

This paper firstly researches the optimization of the teaching process and teaching language according to the English teaching objectives and teaching contents and summarizes the optimization strategy of university English teachers’ language so as to improve the efficiency of English teaching. Secondly, on the basis of applying the optimization theory, the formal description of English utterances and word splitting is carried out, followed by obtaining the features of English utterances through the selection function and further constructing the English utterance alignment model by using the particle swarm optimization algorithm. Then, we study the application of English utterance alignment in English teaching, which is mainly embodied in the construction of the English teaching corpus, word frequency list, and core word lexicon, followed by the analysis of the practical application in English teaching. The results show that in terms of algorithm performance, the correct rate of utterance alignment based on the particle swarm optimization algorithm is 0.82, and the correct rate of utterance alignment is also improved to a great extent. On speaking teaching, self-efficacy showed a significant correlation with cognitive strategies, metacognitive strategies, affective strategies, communicative strategies, compensatory strategies, and memory strategies, and their corresponding coefficient values were 0.652, 0.716, 0.741, 0.732, 0.718, and 0.748, which indicated that the better self-efficacy was, the higher the scores of speaking memory strategies were.
The effect of multimedia-assisted sport education model on teaching tennis lessons in colleges and universities
Authors: Cheng Xiaohu
Published: December 2023

The development of information technology is accelerating the development of network multimedia-assisted teaching modes. In this regard, this paper studies the influence of multimedia-assisted sports education on the teaching of tennis classes in colleges and universities. The first step is to analyze the applicable fields and characteristics of network multimedia CAI. Then, the TLBO algorithm focuses on analyzing the “teaching” and “learning” phases of tennis teaching and finds that the TLBO algorithm has defects. To overcome the local optimal situation of the TLBO algorithm, a grouping mechanism is implemented to optimize the TLBO algorithm and maintain the diversity of the population. Finally, the influence of multimedia-assisted teaching was studied in terms of learning motivation, physical fitness, and learning effect. From the perspective of liking tennis sport, the number of experimental classes is 20, which is 15 more than the number of control classes. The mean score of the experimental class in the forehand hitting spinning ball test was 19 points higher than that of the control class.
Integration Development of Civic Education and Student Management in Colleges and Universities Based on Information Diffusion Modeling
Authors: Huang Li
Published: December 2023

This paper utilizes the idea of information diffusion to model the diffusion effect of information on civic and political education and categorizes the elements for the impact of the civic and political information diffusion system from the three levels of dissemination, acceptance and control. In order to verify the validity of the Civic and Political Information Diffusion Model, manipulative tests and empirical analysis are carried out. The results show that the breadth and depth of the Civic and Political Information Diffusion Model’s manipulability test Sig are significant. They are both less than 0.05, with significant differences. The specific factors affecting the integration and development of civic education and student management can be analyzed more intuitively from the three levels of dissemination, acceptance, and control. This shows that the use of the information diffusion model can provide an effective research direction for the development of the integration of civic education and student management in colleges and universities and lay a good foundation for the cultivation of high-level talents adapted to the development needs of the new era.
Creating Spatial Characteristics of Traditional Village Entrances Based on Multivariate Statistical Analysis--Taking Zengcheng District, Guangzhou as an Example
Authors: Lin Shuping , Ma Yuancheng
Published: December 2023

Based on Maslow’s hierarchy of needs theory, this paper constructs an evaluation index system to create spatially featured landscapes at the village entrance of traditional villages. The evaluation indexes are quantified by using principal component analysis under multivariate statistical analysis, and the satisfaction of the creation of a landscape characteristic of the village entrance space is evaluated by linear regression. The characteristic spatial pattern of the village entrance of traditional villages is discussed, including the characteristic landscape and spatial characteristics. To verify the validity of the evaluation index system in this paper, a quantitative analysis of the data was carried out with Guangzhou Zengcheng District as an example. The results show that the comprehensive score of Licheng Street in Zengcheng District, Guangzhou, is 0.952, and the percentage of villagers’ satisfaction evaluation of the village entrance space is 63.48%. This shows that the central urban area pays more attention to the villagers’ lives and is willing to carry out the village entrance space characteristic landscape creation. Moreover, when creating the characteristic landscape of the village entrance space, it is based on the lifestyle and folklore activities, and the organizational system is the guarantee, which is more in line with the expectation of the villagers for the development of the traditional villages.
Big data background of county-level media “mobility” pressure cracking strategy
Authors: Nie Zhiteng , Zhang Xiaoyong
Published: December 2023

The construction of county-level integrated media is facing a communication dilemma, and it must alter the way and method of communication by using big data. In this paper, under the background of big data, the basic metric features of the users of integrated media communication are calculated by name similarity, one-hot coding features, following rate, etc., which are combined with the pixel statistical characteristics and avatar personality features to build a user portrait of integrated media communication. Taking the user’s profile as the anchor point of communication, the CD-VAE model is used to predict and analyze the early communication of integrated media content. Through case studies, the current characteristics of county-level integrated media and the trend of primary and secondary dissemination are examined. The first and second newspapers were distributed 278 times and 251 times, respectively, with a conversion rate of 12.61%. The primary and secondary dissemination of Jitterbug reached 303 and 284 times, respectively, as media in the era of mobile Internet. The use of big data technology can effectively analyze the development pain points of county-level integrated media.
Students’ Multiple Perceptions of English Teaching Model Reform in Colleges and Universities under Cognitive Coupling Networks
Authors: Ruan Guoyan
Published: December 2023

On the basis of linear multiple regression methods such as PLSR and ICR, this paper introduces the kernel function to kernelize these linear multiple statistical regression methods, derives the KPLSR and KICR algorithms, and gives the specific implementation process. Then kernel-based multiple regression methods are applied to analyze the English teaching mode using a cognitive coupling network. According to the students’ learning data under the English teaching mode of cognitive coupling network, then the students’ learning situation and other precise calculations and statistics, so as to truly reflect the student’s learning status, presenting the students’ learning process in need of an urgent solution. Finally, the correlation between students’ multi-sensory learning styles and English performance is analyzed, and the results show that visual, auditory, kinesthetic, experiential, and independent styles all show a significant positive correlation to the total English performance, with correlation coefficients of 0.416, 0.158, 0.349, 0.339, and 0.327, respectively, among which the correlation coefficient of the visual type of perception is the largest.
Reform and Innovation of Teaching Music Curriculum in Colleges and Universities by Applying Cognitive Mapping
Authors: Xia Xianzhi , Yang Shuqiong , Xie Zhuyue
Published: December 2023

This paper proposes a teaching innovation based on cognitive mapping to address the current problem of dull music teaching in colleges and universities. The combination of BERT-weighted sentence vectors and IDCNN is used to label music topics in cognitive mapping, while music emotion labeling is achieved using BiGRU-Attention. The above music labeling is integrated into the construction of a teaching-oriented cognitive map, and a learning path planning method based on the RippleNet algorithm is proposed under the cognitive map. The teaching effect under the application of cognitive mapping was evaluated in terms of basic literacy and emotional expression after verifying the applicability of the learning path using DCG indicators. As a whole, the student’s basic music literacy improved by an average of 5.16 points in the first stage and by an average of 7.67 points in the whole stage analyzed. The fastest improvement was in Sample 22, which improved by 9.9 points in the first stage and another 3.7 points in the second stage. Learning path planning with the help of cognitive mapping is feasible in the reform of music teaching in colleges and universities.
An Online Interactive Model of University English Based on Comprehensive Evaluation Models
Authors: Zhou Ying
Published: December 2023

This paper combines the theory of multiple interactive teaching modes in the process of college English online teaching and constructs an interactive model of English online teaching from three dimensions: teacher-student interaction, student-student interaction, and human-computer interaction. Secondly, the learner portrait structure in the E-GPPE-C model was designed from the three dimensions of basic characteristics, behaviors, and outcomes. According to the planned group learning path, an improved convolutional neural network (CNN) is used to generate a personalized learning path. To divide the learning community, the group of learners is clustered using the mean clustering algorithm. Finally, three rounds of teaching practice were conducted to verify the effectiveness of this interactive teaching model. The results show that the ratio of verbal interaction between teachers and students after the use of the strategy of constructing learner profiles increased to 0.9 compared with the previous 0.1. The correlation coefficient between personalized learning and learning self-regulation is 0.682, and significant correlations all present a significant correlation at the 0.01 level. This paper provides lessons and references for further research and development of smart interactive instructional design in colleges and universities.
The Application of Traditional Hakka Clothing Cultural Elements in Modern Clothing Design in Western Fujian Based on Image Feature Extraction Technology
Authors: Shi Qiong
Published: December 2023

In this paper, by applying the SIFT algorithm to the color category, texture and shape features of the dress pattern image for feature extraction and eliminating the low contrast texture feature points of the Taylor series expansion, using the statistics of the grayscale covariance matrix as the texture features. Based on the SIFT algorithm, the SURF feature extraction algorithm is proposed. The ideas of the Hessian matrix, determinant value approximation (DoH) and integral image (IGI) classifier are integrated to construct the feature fusion algorithm. Finally, the experimental results of several algorithms are compared and analyzed by taking the traditional dress pattern of the western Fujian Hakka family as the experimental object. The results show that among all the fusion algorithms, the SURF+IGI algorithm achieves an average recognition rate of 0.8914, which is the best performance. And the AUC value of its test set is 0.9445 when the learning rate is 0.005. The research in this paper meets the demand of extracting and applying the cultural elements of the traditional dresses of the Hakka family in western Fujian in modern dress design.
Linguistic Characteristics and Stylisation of Korean Cinema Based on the Social Network Analysis Method
Authors: Xu Sai , Jin Jianren , Yu Hongfang
Published: December 2023

Korean movies have consistently produced exceptional works that have triggered discussions and spread on social networks in recent years. In this paper, we take the movie language dissemination characteristics in social networks as an anchor point and combine the scale and structure of social networks to improve on the IC model to obtain a movie information dissemination model. This network model and the information cascade tandem are selected as the core of density peak clustering, and improvements are made for the updating rules as well as the propagation order of the multi-strategy labeling algorithm in the DCN algorithm. The characterization of movie language propagation in social networks is completed by using an improved algorithm with a multi-labeling idea. The overall stylistic evolution of Korean movies is examined, and then different language feature styles are compared according to social propagation. In the movie Memories of Murder, at 32 minutes and 23 seconds, which shows a rainy night on a muddy land and conveys the hardship of the protagonist’s situation through visual language, the propagation heat reaches 10.52. Similar to this sentence, the movie depicts a rainy night at 63 minutes and a crime scene at 108 minutes, with the propagation heat of the visual language reaching 19.48 and 23.48, respectively. Based on the propagation analysis of the social networks, the accurate capture of the unique impression of the movie language among the audience.
Price Formation and Multi-Market Synergistic Strategies for Renewable Electricity under the Concept of Life Community
Authors: Zhang Li , Ren Xijun , Song Zhumeng , Shi Wei , Wang Yixiao
Published: December 2023

This paper constructs the price formation mechanism of renewable electricity with three pricing mechanisms, namely, system marginal price (SMP), zonal marginal price (ZMP) and nodal marginal price (LMP), on the basis of electricity price location signal. Through the objective function of the constructed optimal dispatch model of renewable energy power, we calculate the minimum operating cost of each power plant under multi-market synergy and use the C&CG column constraint method to solve the price fluctuation caused by the uncertainty of wind and light. Finally, the multi-market synergy rate of the model is estimated by combining the 500 kV, 300 kV and 200 kV unified wind turbines invested by a provincial grid company in China. The results show that the multi-market coordination coefficients α of wind power and photovoltaic projects are 0.1148 and 0.2849, respectively, and the renewable electricity decreases from 0.355 Yuan/kWh to 0.298 Yuan/kWh in 2025 under the optimal dispatch model of electricity. This paper has certain theoretical value and practical reference significance for future renewable energy power price reform.
RSSI-adaptive local dual-mode communication for the Internet of Things in power distribution
Authors: Fan Huicong , Li Wenxiao , Zhu Shijia , Liang Wandi
Published: December 2023

The Internet of Things (IoT)’s rapid development is placing new demands on communication technology for power distribution. This paper proposes the application scheme of RSSI adaptive and dual-mode communication technology in the power distribution area, realizes the dual-mode networking technology adopted to improve communication quality, and verifies the reliability and superiority of the dual-mode communication technology scheme through analysis and application. The RSSI adaptive dual-mode communication module is designed, the RSSI model algorithm is modified, and the logical topology of the communication network and the data processing technology based on compressed sensing are analyzed. We focus on analyzing the performance of dual-mode communication networks for power consumption information collection and the information reception rate and real-time performance of MQTT protocol mapping for power distribution IoT. The average transmission delay was tested to be 198.5ms for QoS=0, 478.0ms for QoS=1, and 786.3ms for QoS=2 without encryption. When using SASL/TLS for transmission encryption, the average transmission delay is 992.7ms for QoS=0, 1203.6ms for QoS=1, and 1461.1ms for QoS=2.
The influence of growth environment on college students’ mental health based on subjective and objective induction perspectives
Authors: Huang Shuying
Published: December 2023

The mental health of college students is closely linked to their upbringing environment. This study utilized a scale method to quantitatively assess family economic status, parenting styles, and closeness using subjective and objective induction perspectives. The survey data was obtained by combining Liket multipoint scoring, and the Cronbach’s alpha coefficient was utilized for testing. For the mental health assessment of college students, quantification and summation was conducted through fuzzy qualitative assessment, and the assessment criteria were established using the fuzzy comprehensive assessment method. The predictions were fitted using multiple linear regression after completing the descriptive statistical analysis and mediating role test. The family socioeconomic status factor was used to predict the mental health index of college students, which could reduce the error by 3.8%. The parenting style factor was used to predict the mental health index of college students, which could reduce 7.2% of the error. Using the factor of family closeness to predict the mental health index of college students can reduce the error by 4.2%. By exploring the influence of upbringing on mental health, psychological intervention methods can be better proposed.
Benefit evaluation analysis of new energy power consumption information collection with basic steady-state harmonic characteristics
Authors: Wang Qing , Jing Zhen , Zhang Zhi , Wang Pingxin , Li Zongzong
Published: December 2023

In this paper, firstly, the load monitoring characteristics of new energy power consumption are studied and analyzed in terms of both steady-state and transient characteristics, and suitable characteristic values are selected for different types as the basis of load decomposition. A comparative analysis of various types of load imprints is conducted to highlight the advantages of steady-state harmonic features as load monitoring feature data. Then, an evaluation model of the demand response potential of electricity information collection is established based on a multi-objective optimization algorithm, and technical and economic analysis of electricity information collection is carried out to evaluate the response potential of power companies collecting customer data. Finally, the situation and benefits of collecting electricity consumption information for new energy power are analyzed. The daily maximum load moments of typical users are all cut by more than 10%, the peak load portion cut by more than 97% is also more obvious, and the maximum moments of valley filling response are all more than 11%. D Power saved a total of 3.759 billion yuan in labor costs by reducing labor costs by 400 million yuan after adopting electricity consumption information collection. The indices of excellent and qualified management benefit and social benefit evaluation of electricity consumption information collection are above 0.8. Overall, the benefits of electricity consumption information collection for new energy power with basic steady-state harmonic characteristics are significant and effective.
Dimensionality reduction model based on integer planning for the analysis of key indicators affecting life expectancy
Authors: Cui Wei , Xu Zhiqiang , Mu Ren
Published: December 2023

Purpose

Exploring a dimensionality reduction model that can adeptly eliminate outliers and select the appropriate number of clusters is of profound theoretical and practical importance. Additionally, the interpretability of these models presents a persistent challenge.

Design/methodology/approach

This paper proposes two innovative dimensionality reduction models based on integer programming (DRMBIP). These models assess compactness through the correlation of each indicator with its class center, while separation is evaluated by the correlation between different class centers. In contrast to DRMBIP-p, the DRMBIP-v considers the threshold parameter as a variable aiming to optimally balances both compactness and separation.

Findings

This study, getting data from the Global Health Observatory (GHO), investigates 141 indicators that influence life expectancy. The findings reveal that DRMBIP-p effectively reduces the dimensionality of data, ensuring compactness. It also maintains compatibility with other models. Additionally, DRMBIP-v finds the optimal result, showing exceptional separation. Visualization of the results reveals that all classes have a high compactness.

Research limitations

The DRMBIP-p requires the input of the correlation threshold parameter, which plays a pivotal role in the effectiveness of the final dimensionality reduction results. In the DRMBIP-v, modifying the threshold parameter to variable potentially emphasizes either separation or compactness. This necessitates an artificial adjustment to the overflow component within the objective function.

Practical implications

The DRMBIP presented in this paper is adept at uncovering the primary geometric structures within high-dimensional indicators. Validated by life expectancy data, this paper demonstrates potential to assist data miners with the reduction of data dimensions.

Originality/value

To our knowledge, this is the first time that integer programming has been used to build a dimensionality reduction model with indicator filtering. It not only has applications in life expectancy, but also has obvious advantages in data mining work that requires precise class centers.
Status of Native Tree Diversity in Relation to Land-Use in the Merhabete District, Ethiopia
Authors: Getachew Goremsu , Asfaw Zebene
Published: December 2023

Most studies undertaken on native fodder and fruit species have focused on planting preferences and socioeconomic importance. The focus has been less on diversity aspects. This study aimed to make a comparative investigation on the status of native fodder and fruit tree /shrub diversity and their management in three land types in Merhabete district, North Shewa Zone, Ethiopia. A total of 127 households were randomly selected for interviews on management practices and threats to the targeted species. Furthermore, 90 sampling plots representing three land use types were used for vegetation data collection. Altogether, a total of 34 tree /shrub species were recorded from three land use types in the study area. Out of the 34 tree/shrub species identified, 31 (91.2 %) species were native fodder and fruit tree/shrub species, and the remaining 3 (8.8 %) were exotic tree/shrub species. The mean tree/shrubdiversity, species richness, and species density were significantly higher in the remnant natural forest than in homegarden and parkland (p≤0.05). Likewise, the highest tree basal area was recorded in remnant natural forest, followed by homegarden and parklands. The common management practices for native fodder and fruit species were pollarding, thinning, pruning, lopping, and fencing. Based on the findings, it is concluded that species diversities and stem numbers were lower in parkland than in other land-use types. Therefore, it is recommended that planting native fodder and fruit tree/shrub species on parkland is essential to enhance the conservation and domestication process of the targeted species.
Structure and Regeneration Status of Woody Seed Oil Species in Northern Botswana
Authors: Kashe Keotshephile , Tsheboeng Gaolathe , Kgathi Donald L. , Mmopelwa Gagoitseope , Mmusi Mmusi , Moseki Ofentse , Galelebalwe Meleko K.
Published: December 2023

Concerns about energy security and environmental risks have sparked interest in edible and non-edible seed oils as potential renewable feedstocks for biodiesel production. A study was conducted to investigate the population structure and regeneration status of woody seed oil species in the districts of Chobe and Ngamiland. The population structure and regeneration condition of woody seed oil species were studied in 20 × 20 m (400 m2) quadrats spaced 50 m apart along a parallel line transect. Data on the identity of all woody species, the number of all live individuals, and the diameter at breast height (DBH) of individuals with DBH > 2 cm of each woody species were collected in each quadrat. The diversity (Hʹ) and evenness (Jʹ) of woody seed oil species were 1.53, 1.42 and 0.71, and 0.85, 0.73 and 0.51 in Parakarungu, Seronga and Shorobe, respectively. Ximenia caffra was the dominant woody seed oil plant in Shorobe and Seronga, and exhibited an inverted J-shaped curve with continuous diameter classes distribution. Trichilia emetica was only found in Parakarungu, where it was the second dominant species and demonstrated excellent recruitment and regeneration. In Shorobe and Seronga, Croton megalobotrys was the second most dominant species. It had low recruitment, which was most likely due to herbivory and predation on seeds and seedlings. The least prevalent species (Sclerocarya birrea, Schinziophyton rautanenii and Guibourtia coleosperma) had no representation in the intermediate diameter-classes, which might be attributed to the selective removal in these diameter-classes. The examination of the population structure of woody seed oil species indicated variations in patterns of diameter-class distribution, indicating differences in the population dynamics of the species across the study areas. The least dominant species experienced hindered recruitment and regeneration due to herbivory and anthropogenic influences.
Additive Manufacturing of Ti-6Al-4V with Carbon Nanotube Composite Material
Authors: Vevers A. , Kromanis A.
Published: December 2023

This research is dedicated to investigating whether mechanical properties of Ti-6Al-4V (Titanium Grade 5) base material for additive manufacturing processes can be improved by addition of carbon nanotubes in the base material. Based on other research results with other materials, the assumption was made that reinforcing Ti-6Al-4V material with carbon nano-tubes should improve mechanical properties of the base material by 15–20 % in the additive manufacturing process. The research was divided in two steps, the first one was to investigate pure Ti-6Al-4V material and find optimal additive manufacturing processing parameters, which could maintain necessary quality standards and achieve material density levels higher than 98 % and tensile strength higher than 1000 MPa. The second part was to mix base powder with carbon nanotubes and using previously obtained processing parameters print test samples to investigate how a carbon nanotube concentration in a base powder would influence mechanical properties of the base material.
Retropharyngeal calcific tendinitis in the neurological emergency unit, report of three cases and review of the literature
Authors: Filipovic Tatjana , Avsenik Jernej
Published: December 2023

Background

Retropharyngeal calcific tendinitis (RCT) is a relatively benign condition of calcination of the longus colli muscle tendon of unknown origin, which causes severe acute neck pain. However, it is often not recognised, which leads to delayed diagnosis and unnecessary treatment.

Patients and methods

We have searched PubMed and Google Scholar for publications which reported at least one patient with RCT and were published in the last 20 years. The literature was then analysed according to the PRISMA-S protocol. We also report three patients with RCT presenting at the Neurological Emergency Unit, University Medical Centre, Ljubljana, Slovenia, from 1 January 2020 to 1 June 2022. We discuss their clinical presentation and differential diagnosis, explain our decision-making process, and briefly describe the clinical course. Case reports have been performed according to the CARE protocol.

Results

We have analysed a total of 112 titles with 231 patients. The most frequent symptoms and signs were: neck pain, neck stiffness and odynophagia, as was the case in our reported cases.

Conclusions

RCT is a dramatic yet self-limiting condition, often not recognised in time. An effort should be made to increase neurologists’ awareness about this condition.
Correlation between maximum heart distance and thoracic diameter changes and diaphragmatic descent in left-sided breast cancer patients during deep inspiration breath-hold (DIBH)
Authors: Wu He-Gou , Zhang Guang-Wei , Liu Jian-Feng , Yang Jun-Guo , Su Xiao-Hui
Published: December 2023

Background

Cardioprotection is valued in radiotherapy for patients with left-sided breast cancer. Deep inspiration breath-hold (DIBH) technique can achieve cardioprotection well. However, during DIBH, the extent to which the heart enters the radiation field is affected by the movement of the thorax and diaphragm. The aim of this study was to analyze the correlation between the maximum distance of the heart entering the field (maximum heart distance, MHD) and thoracic diameter changes and diaphragmatic descent in left-sided breast cancer patients during DIBH.

Patients and methods

Ninety-eight patients with left-sided breast cancer were included in this retrospective study. They performed simulation in Sentinel-guided DIBH, and two sets of CT images were collected under both free breathing (FB) and DIBH, and diaphragm positions, anteroposterior thoracic diameter (ATD), transverse thoracic diameter (TTD), gating window level (GWL), and MHD were measured, and the change (Δ) of each parameter in DIBH relative to that in FB were calculated. Pearson or Spearman test were used to analyze the correlation between ΔMHD and the changes in other parameters.

Results

For all patients with DIBH, the average of ΔMHD was −8.3 mm, and the average of ΔATD and ΔTTD were 11.0 and 8.6 mm, and the median of both left diaphragmatic descent (LDD) and right diaphragmatic descent (RDD) were 35.0 mm, and the median of GWL was 11.1 mm. The correlation coefficients between MHD decrease (ΔMHD) and LDD, RDD, and ΔTTD were −0.430 (p = 0.000), −0.592 (p = 0.000) and 0.208 (p = 0.040), respectively, but not significantly correlated with ΔATD or GWL.

Conclusions

The MHD decrease showed a moderate correlation with diaphragmatic descent In Sentinel-guided DIBH for patients with left-sided breast cancer, while there was a weak or no correlation with thoracic diameter changes or GWL. Abdominal breathing can lower diaphragm more and may be more beneficial to the heart stay away from tangential field.