bluuebunny/crossref_metadata_2025 huggingface dataset:
Advancing Circular Economy and Competitiveness through Green Supply Chain Management in Plastic Recycling Industry
Authors: Purwanto Setiyo , Perkasa Didin Hikmah , Ali Muhammad
Published: December 2024

This research investigates the influence of product competitiveness (PC) and green supply chain mana-gement (GSCM) on firm performance (FP) in Indonesia's plastic recycling industry, with a particular emphasis on the mediating role of import regulation (IP). Furthermore, it evaluates the moderating effect of top management commitment (TMC) on the relationship between GSCM and PC, as well as between PC and FP. Data were collected through questionnaires administered to employees and business stake-holders within the plastic supply chain and subsequently analyzed using PLS-SEM via SmartPLS. Hypotheses were formulated to explore the interactions among PC, GSCM, IP, TMC, and FP within a circular economy framework. The findings indicate that government import regulations significantly enhance PC and FP. Moreover, TMC strengthens the efficacy of GSCM, resulting in improved FP. The study highlights the environmental and economic benefits of the circular economy, particularly its potential to reduce dependence on imported virgin plastic in Indonesia. These results underscore the critical role of regulatory support and management commitment in advancing sustainable practices within the plastic recycling sector.
Examining the Mediating Role of Personality on the Relationship between Talent, Technology Systems, and Employee Competency
Authors: Dian Fitri  , Sri Langgeng Ratnasari  , Suyanto  , Zulkifli Sultan
Published: December 2024

Human resource management in Indonesian industries plays a critical role in enhancing employee com-petencies amid technological, economic, and global labor market developments. However, there is a gap between employee competencies and organizational demands, reflected in Indonesia's 87th ranking in the Human Capital Index (HCI). This study aims to analyze the influence of talent and technology systems on employee competency, with personality as a mediating variable. Using a quantitative approach with Structural Equation Modeling - Partial Least Squares (SEM-PLS), data were collected from 196 respond-ents out of a population of 385 employees at Putra Kelana Makmur Group. The results indicate that talent does not directly influence employee competency but has an indirect effect through personality. In contrast, technology systems and personality significantly impact competency enhancement. Personality is a significant mediator in the relationships between both talent and technology systems with com-petency. These findings highlight the importance of developing effective technology systems and a supportive work environment that fosters personality development. For companies, this study empha-sizes the need to consider personality and technology as key factors in creating a more holistic and adapt-ive human resource management strategy to improve employee competencies.
ANALISIS KINERJA GSA UNTUK MENINGKATKAN KEPUASAN TAMU MELALUI REVIEW OTA DI HOTEL CAVINTON
Authors: Atmoko T. Prasetyo Hadi , Widyaningsih Heni
Published: December 2024

ABSTRAK

Penelitian ini bertujuan untuk mengetahui kinerja guest service agent dalam meningkatkan kepuasan tamu melaui review online travel agent di Hotel Cavinton, dan untuk mengetahui kualitas pelayanan guest service agent dalam melayani tamu. Metode yang digunakan dalam penelitian ini yaitu analisis data kualitatif dengan metode pengumpulan data observasi, literatur, dan dokumentasi. Kinerja guest service agent untuk meningkatkan kepuasan tamu ditinjau dari review online travel agent di Hotel Cavinton Yogyakarta mendapat review memuaskan, pelayanan yang diberikan juga sudah sesuai standar operasional prosedur. Review yang dianggap memuaskan 90 %, dan aspek spesifik dari SOP yang dipenuhi 88 %. Temuan ini dapat membantu hotel dalam meningkatkan kepuasan tamu dibuktikan dengan ulasan positif yang diberikan oleh tamu, yang menunjukkan bahwa pelayanan yang diberikan sesuai dengan standar operasional prosedur. Tindakan seperti memberikan upgrade room, VIP notice, dan voucher coffee time berkontribusi pada peningkatan kepuasan tamu sehingga tamu datang kembali menginap di Cavinton Hotel. Secara keseluruhan, kualitas pelayanan yang diberikan oleh staff guest service agent dinilai baik oleh tamu, yang mencakup keramahan, siap membantu, dan fasilitas yang memadai.

Kata kunci: kinerja, guest service agent, review

ABSTRACT

This study aims to determine the performance of guest service agents in increasing guest satisfaction through online travel agent reviews at Hotel Cavinton, and to determine the quality of guest service agents in serving guests. The method used in this study is qualitative data analysis with observation, literature, and documentation data collection methods. The performance of guest service agents to increase guest satisfaction is reviewed from online reviews of travel agents at Hotel Cavinton Yogyakarta received satisfactory reviews, the services provided are also in accordance with standard operating procedures. Reviews that are considered satisfactory 90%, and specific aspects of SOPs that are fulfilled 88%. These findings can help hotels in increasing guest satisfaction as evidenced by the positive reviews provided by guests, which show that the services provided are in accordance with standard operating procedures. Actions such as providing room upgrades, VIP notices, and coffee time vouchers contribute to increasing guest satisfaction so that guests often come back to stay at Cavinton Hotel. Overall, the quality of service provided by the guest service agent staff is rated well by the guests, which includes friendliness, helpfulness, and adequate facilities.

Keyword: Performance, Guest Service Agent, Review
Corporate Social Responsibility (CSR) Communication and Its Role in Image Building for Companies in NCR
Authors: Shruti  , Dadhich P.R. , Saini Sanjay Kumar
Published: December 2024

The effect of CSR (Corporate Social Responsibility) messaging on NCR-based businesses' public perception is the focus of this research. Case studies of five well-known organizations, interviews with ten CSR managers, and survey data from two hundred customers make up the research's mixed-method approach. Results show that CSR messaging has a major impact on brand recognition, credibility, and customer retention. According to the poll, the majority of customers (78%) are aware of corporate social responsibility (CSR) initiatives via digital channels, with social media having the most influence. Seventy percent of people also said they had more faith in businesses that are transparent about their CSR initiatives, and 65 percent said they are more likely to buy from organizations with strong social missions. Case studies demonstrated the efficacy of multi-channel solutions, and interviews with CSR managers emphasized the significance of honest and open communication. Companies in the NCR would do well to follow the study's recommendation and implement CSR procedures that are consistent, transparent, and engaging if they want to improve their reputation and attract loyal customers.
Media and Contemporary Society: Current Trends
Authors: Suresh Kumar P.M.
Published: December 2024

Media plays a significant role in transforming human lives. In contemporary society, it exercises considerable influence in all walks of life. The extensive spurt of print media, the proliferation of electronic, online, and digital media, and lately social media point to this. The primary function of media is information dissemination. It connects people with the surrounding world of events and happenings. In modern society where power, politics, and religion have become instruments of control media assumes significance. Media serves as an extended arm of politics. Political parties require their services to gain and stay in power or topple elected governments. Unlike other businesses, media is a dispenser of ideology. Large media houses are akin to big business ventures. Social media have been largely influenced by political activism, a quest for identity besides the propagation of ideology. One of the striking developments in contemporary society is the expanding base of religion invading other social structures.  We see the world over religion has been diabolic surpassing its inherent function of worship, spiritual satisfaction, and reflection of values that make life meaningful and coexisting. In encroachment into politics, the nexus between politics and religion has thinned down. This danger results in the culmination of a religion-driven society where the dictates of religion translate into guidelines for running the government and thereby a social order based on religion. Eventually, social life and political structures are subordinated. Such a situation is dangerous where social life boils down to an entity devoid of its plurality and diversity. This paper aims to discuss the current trends in the role of media influencing contemporary society.
Nepal's Role in India-Pakistan Relations
Authors: Sejwal Lakshman
Published: December 2024

Islamic terrorism, supported by Pakistan's intelligence agency (ISI), has now assumed a global dimension, with India being one of the most affected nations. For India, this poses a significant challenge, as it is a secular nation home to people of various castes and religions. The spread of terrorism has been heavily influenced by Islamic extremism and ISI's central role. They continue to adhere to century-old policies, fostering an atmosphere of terror worldwide with the ambition of establishing Islamic nations and disregarding other religions. In this context, they promote divisions based on religion, caste, and regional differences, creating an environment of terror and taking the lives of innocent people through various means. They display no regard for humanity, leading to a situation of heightened tensions between people and nations.
Abstract in Hindi Language: पाकिस्तान खुफिया एजेन्सी (आई.एस.आई.) द्वारा पोषित इस्लामिक आतंकवाद ने आज के समय में विश्वस्तरीय रूल ले लिया है, भारत उनमें सबसे पीड़ित राष्ट्रों में एक है। भारत के लिए यह प्रमुख चुनौतियों में से एक है, क्योंकि भारत एक धर्म निरपेक्ष राष्ट्र है जहाँ पर विभिन्न जाति, धर्म के लोग रहते है। आतंकवाद के प्रसार में इस्लामिक कट्टरपंथी व आई.एस.आई. की अहम् भूमिका रही है वे आज भी शताब्दी पुरानी नीतियों पर चलने के लिए आतंक का माहौल विश्व भर में फैलाने का कार्य कर रहे हैं तथा उनका एक वृत्ति इस्लामिक राष्ट्र बनाने की महत्वकांक्षा है। साथ ही अन्य धर्मों को ना देखने की चाहत है। ऐसी स्थिति में वह धर्म, जाति, क्षेत्रीय अलगाव आदि को बढ़ावा देकर आतंक का माहौल बना रहे है तथा निर्दोष लोगों की विभिन्न माध्यमों से जान ले रहे है। उन्हें मानवता से कुछ सरोकार नहीं है। ऐसी स्थिति में लोगों व राष्ट्रों के मध्य तनाव की स्थिति बन जाती है।
Keywords: भारत, पाकिस्तान, नेपाल, आई.एस.आई.।
Social Media: An Effective Weapon for the Youth Generation
Authors: Sharma Har Sahai
Published: December 2024

Social media has impacted the lives of the youth in various ways. It has emerged as an effective weapon that not only strengthens social relationships but also provides a platform for the exchange of information, education, and professional networking. Young people now use social media to voice their opinions globally, which is bringing significant changes to their personal and professional lives. Through it, they share their ideologies, creativity, and thoughts on social issues. However, there are some negative aspects, such as the impact on mental health and time wastage. This research discusses the impact of social media on the youth generation, its benefits, challenges, and opportunities, while also explaining how it functions as an effective weapon.
Abstract in Hindi Language: सोशल मीडिया ने युवा पीढ़ी के जीवन को कई दृष्टिकोणों से प्रभावित किया है। यह एक प्रभावी हथियार के रूप में उभरा है, जो न केवल सामाजिक संबंधों को मजबूती प्रदान करता है, बल्कि सूचना के आदान-प्रदान, शिक्षा, और व्यावसायिक नेटवर्किंग के लिए भी एक मंच प्रदान करता है। युवा अब अपनी आवाज को वैश्विक स्तर पर सुनाने के लिए सोशल मीडिया का उपयोग करते हैं, जो उनके व्यक्तिगत और पेशेवर जीवन में भी महत्वपूर्ण बदलाव ला रहा है। इसके माध्यम से वे अपनी विचारधारा, रचनात्मकता और सामाजिक मुद्दों पर विचार साझा करते हैं। हालांकि, इसके कुछ नकारात्मक पहलू भी हैं जैसे मानसिक स्वास्थ्य पर प्रभाव और समय की बर्बादी। यह शोध सोशल मीडिया के युवा पीढ़ी पर प्रभाव, इसके लाभ, चुनौतियों और संभावनाओं पर चर्चा करता है, साथ ही यह भी बताता है कि यह एक प्रभावी हथियार के रूप में कैसे काम करता है।
Keywords: सोशल मीडिया, युवा पीढ़ी, प्रभाव, चुनौतियाँ
From Environmental Ethics to Social Contracts: Unraveling the Philosophical Intersections of the COVID-19 Pandemic and Environmental Pollution
Authors: Mitra S.
Published: December 2024

One can critically evaluate the effects of the pandemic and environmental
pollution on our daily lives and the community at large by looking at
various perspectives on philosophy, such as ethical practices and social
contract theory. The paper highlights the significance of adopting
environment- friendly practices and making moral decisions to effectively
handle these issues. Woven throughout the entire discussion is the
emphasis on making responsible choices and adopting environmentally
friendly practices to combat both the COVID-19 epidemic and pollution.
In the field of environmental ethics, the study examines the connections
between moral obligations and contemporary environmental problems.
Further, the paper investigates various schools of thought which include
ecofeminism, which looks at the connections between the exploitation of
women and the destruction of nature, and deep ecology, which
acknowledges the intrinsic value of every living thing and the
environment. This paper analyses the connection between the COVID-19
pandemic and environmental pollution from a philosophical angle. It
attempts to provide readers with a broader comprehension of the moral,
social, and environmental ramifications of these universal issues
Информационная безопасность в системе международных отношений. Курс лекций
Authors: Федоров А.В.
Published: December 2024

Курс лекций направлен на понимание сути и места проблемы международной информационной безопасности и информационного противоборства в общей системе обеспечения безопасности и ведущегося в последние 25 лет переговорного процесса. Рассматривается формирование и развитие проблемы, ее философские и военно-технические основания, возникающие правовые и социальные проблемы. Разработан на основании Федерального государственного образовательного стандарта высшего образования по направлению подготовки 41.04.04. «Политология». Предназначена для студентов и аспирантов – политологов, а также всех интересующихся современными международными отношениями в области информационной безопасности.
Budget Practices in SME companies in Georgia
Authors: Mercan Metin , Simonishvili Lia
Published: December 2024

This paper explains the importance of the company's budget and cash flow. It shows how important it is for businesses to turn their spending into cash flow while making important choices.Not only the budget but also cash flow play a much greater and more vital part in the performance of economic activities nowadays. It allows accountants and financiers to manage plans, income, and expenses in order to improve the company's efficiency. Furthermore, a better understanding of costing and cash flow allows organizations to choose a budget that is appropriate for a specific strategy and accomplish the intended goals. And when it comes to businesses, budgeting lets them get a better idea of how the Financial Accounting Center or certain functional areas work over time.
Emotrópolis, tiempos y ritmos urbanos. Poética del espacio y emocionalización de la Ciudad de México
Authors: García Ayala José Antonio
Published: December 2024

Introducción: En este mundo es preciso conectar a los habitantes con sus emociones, en una urbe fractal, convivencial y culturalmente diversa como la Ciudad de México, para enfrentar sus desafíos y dar vida al derecho a disfrutarla. Metodología: Con una conceptualización basada en “La poética del espacio”, se implementó una metodología transdisciplinaria nutrida por el pensamiento complejo y la teoría de los sistemas complejos, para sentir a través del arte sobre esta Emotrópolis, su territorialización emocional y con sentido en sus tiempos y ritmos urbanos. Resultados: Esta propuesta de entendimiento de la dimensión emocional urbana, vincula la territorialización con la memoria emocional y la sintonización con su comunidad, percibiendo un bienestar, que conecta con los cuatro elementos de la naturaleza: tierra, agua, aire y fuego. Discusión: Así, desde la poética del espacio, sus tiempos y ritmos de esta urbe fractal; se construye un conocimiento de frontera que se enfrenta a los retos de esta, al abrirse a la dimensión poética del habitar el territorio. Conclusiones: Al experimentar una percepción de bienestar, entendido desde la cosmovisión mesoamericana, que nos conecta por medio de distintos emosignificados con el sentido de pertenencia socioterritorial a la Ciudad de México, se desentraña su funcionamiento.
Preaching of Indulgences from the Roman Hospital Sancti Spiritus in Saxia in Poland, Lithuania, Silesia and Prussia in the Fifteenth and Early Sixteenth Centuries
Authors: Zimny Mateusz
Published: December 2024

The Order of the Holy Spirit conducted a campaign of preaching the indulgences that spread throughout Europe, combined with a collection of alms for the Roman Hospital of the Holy Spirit. From the fifteenth century onwards, special commissaries preaching indulgences also reached Poland, Lithuania, Silesia and Prussia. This article presents the activities of the commissaries in areas on the basis of the surviving source material, in particular the letters of indulgence they issued.
Digital Image Based DSS for Assessing Tomato Quality using AHP-TOPSIS Method
Authors: Wulandari  , Surianto Dewi Fatmarani , Parenreng Jumadi M. , Adiba Fhatiah
Published: December 2024

Tomatoes are a major export commodity in the country's plantation sector. This increases the urgency of efforts to increase tomato productivity, both in terms of quantity and quality. Evaluation of tomato quality currently relies on the degree of ripeness and skin texture. The conventional method currently used involves manual inspection, which can allow for misjudgment and economic loss. This research aims to use a digital image-based approach by utilizing a decision support system that combines the AHP and TOPSIS methods to assess tomato quality based on color and texture criteria. This research evaluates and ranks nine tomato images that have good quality, by giving higher priority to skin texture than skin color. Evaluation results from three tests showed that the system was able to determine the quality of tomatoes with an average kappa value of 0.78, which interpreted the results of good agreement between the system and expert judgments.
Comparative Analysis of KNN and Neavy Bayes Algorithms in Socio-Economic Data Classification in Indonesia
Authors: Buhori Kiki , Andrianingsih
Published: December 2024

The global economy continues to recover as trade flows, employment, and incomes improve. However, the economic recovery is uneven across countries and business sectors. The economic recovery has also resulted in structural changes, meaning that some sectors, jobs, technologies and behaviors will not return to pre-pandemic trends. Future developments depend on local economic conditions. The economy has the most important aspect in a country where the economy makes a country capable of meeting its needs by utilizing limited resources. This study aims to compare two data mining classification algorithms, namely Naïve Bayes and K-Nearest Neighbor, in analyzing socio-economic data in Indonesia. Based on this problem, the data mining classification method is used in determining the algorithm that is suitable for predicting socio-economic data in Indonesia. The two algorithms used are K-NN and Naive Bayes. After testing the two algorithms using confusion matrix and K-Fold Cross Validation, the results obtained from the two models have an accuracy of Naïve Bayes 98.25% and K-NN 97.78% and the results of K-Fold Cross Validation Naïve Bayes 98% and K-NN 96%. Naïve Bayes is superior to K-NN in this context of socioeconomic data classification in Indonesia, especially in terms of accuracy. Although K-NN shows good consistency, Naïve Bayes provides more accurate results.
Effects of the Nucleus Raphe Magnus Stimulation on Nociceptive Neurons of the Rat Caudal Ventrolateral Medulla in Normal Conditions and after Intestinal Inflammation
Authors: Sushkevich B. M. , Sivachenko I. B. , Lyubashina O. A.
Published: December 2024

The nucleus raphe magnus (RMg) is a key structure of the endogenous antinociceptive system, the activity of which is regulated by serotonin 5-HT1A receptors. A recipient of the RMg descending projections is the caudal ventrolateral medulla (cVLM) - the first supraspinal center for processing visceral and somatic pain signals. Intestinal pathology is known to cause persistent functional alterations in the RMg, which are associated with the development of visceral and somatic hyperalgesia. Presumably, a consequence of the alterations may be changes in the RMg modulating effects on cVLM nociceptive activity. However, the specific neuronal and molecular mechanisms underlying such influence in normal conditions, as well as their changes in pathology remain unexplored. The aim of our neurophysiological experiments performed in anesthetized adult male Wistar rats was to compare the effects of RMg electrical stimulation on the activity of cVLM neurons evoked by visceral (colorectal distension, CRD) and somatic (tail squeezing) pain stimulations that occur in normal conditions and after intestinal inflammation (colitis), with an assessment of the contribution to these processes of the supraspinal 5-HT1A receptor activation with intracerebroventricular buspirone. It has been shown that RMg can exert an inhibitory effect on both non-selective and differential responses of the cVLM neurons to diverse pain stimuli, causing a weakening of excitatory neuronal ractions and an increase in inhibitory responses to CRD while inhibiting both types of reactions to tail squeezing. The RMg-evoked suppression of nociceptive excitation in the caudal medullary neurons is enhanced under activation of supraspinal 5-HT1A receptors by buspirone. It has been established that in postcolitis period the RMg inhibitory action on different populations of cVLM neurons are significantly diminished, indicating an impairment of the nucleus’ antinociceptive function. In these conditions, the RMg descending influence loses its 5-HT1A receptor-dependent component. The changes described may contribute to the supraspinal mechanisms underlying pathogenesis of post-inflammatory abdominal pain and comorbid somatic hyperalgesia.
Glutamatergic Regulation of the Audiogenic Seizures and Postictal Catalepsy in Krushinsky–Molodkina Strain Rats: Effects of Dizocilpine and D-Serine
Authors: Surina N. М. , Fedotova I. B. , Poletaeva I. I.
Published: December 2024

The participation of the glutamatergic neurotransmitter system in the pathogenesis of audiogenic seizures (AS) and post-ictal catalepsy (PIC) in Krushinsky-Molodkina rats was analyzed. Effects of D-serine and disocilpine administration was investigated. In intact KM rats, the intensity of AS correlates with the duration of PIC. The administration of D-serine (acute administration, doses of 200, 400 and 600 mg / kg, as well as after chronic administration – 5 days of 300 mg / kg, n = 34) had no significant effect on AS and PIC. Disocilpine (MK-801, a non-competitive NMDA antagonist) was administered in an acute experiment at doses of 0.1, 0.2 and 0.4 mg/kg (n = 41). MK-801 dose-dependently reduced the intensity of AS and caused a "two-wave pattern" of seizures in the most of animals, and removed PIC at a lower dose than AS seizures. PIC was completely eliminated already at a dose of 0.2 mg/kg, while the clonic component of AS still persisted. Thus, it was possible to show the "dissociation" of AS and PIC. It is assumed that although dopaminergic control is involved in the mechanisms of PIC development, glutamatergic neurotransmission is also taking part in the PIC expression.
D-serine reduces extracellular serotonin level in the medial prefrontal cortex and enhances the formation of fear response in rats
Authors: Saulskaya N. B. , Susorova M. A.
Published: December 2024

D-serine is an endogenous agonist of the glycine site of NMDA receptors. However, its contribution to the medial prefrontal cortex (mPFC) functions has been little studied. The purpose of the work was to study the involvement of D-serine in the mPFC in the formation and generalization of the conditioned fear response (CFR – a fear model), as well as in the regulation of serotonin release in this area. In Sprague-Dawley rats by means of in vivo microdyalisis and HPLC analysis, we showed that the intra-mPFC infusion of D-serine (1 mM) reduces the basal level of extracellular serotonin in this area and decreases its rise during CFR acquisition (pared presentation of a conditioned cue (CS+) and inescapable footshock but not during differentiation 1 (presentation of a differentiation cue (CS-) alone).The intra-mPFC D-serine infusion reduced animals’ freezing to CS+ (a measure of passive footshock anticipation) during the CFR acquisition and increased ambulation and the number of rearing (attempts to escape footshock). This pharmacological treatment, a day after it, increased animals’ freezing to the potentially dangerous CS+, but did not affect freezing to the safe CS-. The data obtained indicate for the first time that, with a decrease in the release of serotonin in the mPFC, stimulation of the mPFC by D-serine enhances the animals’ active strategy of avoiding shock and suppresses the passive strategy of anticipating it.
This is accompanied by increased acquisition and/or consolidation of the CFR, but does not affect its generalization.
On correct accounting of capillary forces when simulating oil displacement processes when flooding productive formations
Authors: Svalov A. M.
Published: December 2024

The work is devoted to solving the problem of correctly determining capillary pressure functions during mathematical modeling of oil displacement processes during flooding of productive formations. It is shown that the use of these functions, determined in laboratory conditions using traditional methods using capillarimeters and high-speed centrifuges, when modeling processes of oil displacement from low-permeability productive reservoirs can lead to significant errors. The work notes that when conducting laboratory studies in rock samples, there is no formation of residual oil in a stationary form, while in real conditions of displacement of oil by water from productive formations, residual oil is formed in the rock, and in low-permeability formations the residual oil saturation can reach 50% or more of the pore volume. To obtain capillary pressure curves that more reliably reflect the real processes in productive formations during their flooding, it is proposed that when preparing rock samples for laboratory research, it is proposed to provide for the process of preliminary formation of residual oil saturation in these samples. This will make it possible to more reliably simulate the processes of oil displacement during waterflooding of productive formations in real conditions, especially when developing low-permeability oil and gas reservoirs.
REE mineralization in alkaline rhyolites of the Pechalninsky ore field (North-East of Russia)
Authors: Grigorieva A. V. , Volkov A. V. , Sidorova N. V.
Published: December 2024

For the first time (by methods Scanning Electron microscopy, X-ray spectral microanalysis and cathodoluminescence method) REE mineralization studies have been conducted in alkaline rhyolites of the Pechalninsky ore field (North-East of Russia), a potentially larger-volume source of HREE. It is shown that in the direction of fluidity, thin interlayers composed of crystalline aggregates of pyroxenes and/or amphiboles impregnated with a silicate substance alternate in the rock, and ribbon-like thin strips and lace separations of Fe, Ti, and Mn hydroxides that have replaced titanomagnetite (relict secretions of which are partially preserved). Microcrystalline aggregates of pyroxenes and/or amphiboles contain the finest inclusions of REE secretions (5–7 microns), the determination of mineral species of the latter is difficult due to the small particle sizes. Scanning electron microscopy (EMF) has determined that these secretions are REE phosphates. Concentrically zonal and radially radiant REE secretions have been revealed in the relics of titanomagnetite crystals. The first ones are represented by silicates enriched with Yt and REE. In them, the content of REE varies unevenly from the center to the edge. Radially radiant aggregates are represented by oxides and/or carbonates containing REE (La, Ce and Nd predominate). The results obtained can be used in the development of enrichment technology.
Dissociation kinetics of methane hydrate in frozen rocks at decreasing external pressure: mathematical and laboratory modeling
Authors: Ramazanov M. , Bulgakova N. , Lobkovsky L. , Chuvilin E. , Davletshina D. , Shakhova N.
Published: December 2024

Dissociation of pore methane hydrate in ice- and gas-bearing sediments at external pressure below the equilibrium has been simulated in mathematical and physical (laboratory) models. The mathematical model, along with the experiment, provides constraints on dissociation kinetics. The suggested theoretical model confirms the trend of decreasing hydrate saturation of frozen soil Sh~Aτ(-n). observed previously in experiments. The physical model makes basis for calculating the coefficients A and n, while the mathematical modeling shows how the coefficients depend on the problem parameters. The theoretical estimates agree with the experimental results, both qualitatively and quantitatively. The results of mathematical and physical modeling have implications for key factors that control self-preservation of pore methane hydrates in frozen sediments.
An unusual variety of geophagy – snow sheep coal consumption in the Transbaikalian mountains
Authors: Panichev A. M. , Baranovskaya N. V. , Chekrizhov I. Yu. , Ivanov V. V. , Tsatska A. N.
Published: December 2024

Several places were discovered in the mountains of the Kodar ridge in Transbaikalia, that are regularly visited by bighorn sheep (Ovis Nivicola) for the purpose of consuming coal (Chepinskaya Formation, Jurassic). According to observations an adult ram eats from tens to hundreds of grams of coal gruss and dust at once. A comprehensive study of “eatable” coals was carried out, including their geochemistry with determination of the content and balance of mobile forms of microelements, including rare earth elements (REE). It has been established that the sum of REE in coal varies from 0.19 to 0.27 kg/t, which is 3.5–4 times higher than the clarke value. The REE composition is dominated by elements of the light subgroup (LREE). The presence of monazite, xenotime and rhabdophane in the consumed coals was established by analytical scanning electron microscopy. An acid (HCl, pH-1) extract from minerals showed, that among the elements released from coal, only some microelements, including LREEs, are most likely to be of greatest importance for animals. The data obtained, considering our previously conducted landscape-geochemical studies of mass geophagy areas in the Sikhote-Alin, the Gorny Altai and on the island. Olkhon (Baikal), suggest that the reason for the regular consumption of coals by bighorn sheep on the Kodar Ridge is due to the animals intention to restore the disturbed balance of REE in the body.
Late Paleozoic stages of ore formation in the Middle Tien Shan: isotopic U-Pb zircon dating (LA-ICP-MS method) of intrusive rocks from the Sonkul and Kokturpak plutons (eastern Kyrgyzstan)
Authors: Soloviev S. G. , Kryazhev S. G. , Semenova D. V. , Kalinin Y. A. , Bortnikov N. S.
Published: December 2024

The paper presents the isotopic U-Pb study data (LA-ICP-MS method) of zircon from intrusive rocks of the Sonkul and Kokturpak plutons situated along the deep-seated fault system of the “Nikolaev Line” in the eastern Kyrgyzstan. These plutons of high-potassic rocks are spatially and genetically associated with the Kumbel and Kashkasu W-Mo-Cu-Au deposits, respectively, as well as other occurrences of W and W-Au mineralization. Together with other Au, W and Cu deposits, they are parts of the extended metallogenic belt of Tien Shan. The concordant isotopic U-Pb ages of zircon autocrysts for the consecutive intrusive phases span over the interval of approximately 303 to 283 Ma. This interval included the crystallization of olivine gabbro (299±2 Ma) in the Sonkul pluton, monzonite (300±3 Ma) in the Kokturpak pluton, granodiorite of the main intrusive phase (299±3 Ma in the Sonkul pluton and 297±4 Ma in the Kokturpak pluton), and monzogranite (289±4 Ma in the Sonkul pluton and 285±2 Ma in the Kokturpak pluton). Zircon antecrysts dated at 306–311 (to 323?) Ma have also been distinguished. The age data obtained correspond to the pluton emplacement in the Late Carboniferous-Early Permian initially in subduction-related and then post-collisional tectonic settings. Besides, in the Middle Tien Shan, this age interval corresponds to one of the regional pulses of high-potassic calc-alkaline and shoshonitic magmatism. A distinct metallogenic evolution corresponds to these pulses that is expressed in the change from porphyry Cu-Au-Mo deposits related to the early pulse to essentially tungsten (W-Mo-Cu-Au) and then essentially gold deposits related to younger pulses. The rocks also contain zircon xenocrysts with ancient age (in the order of 1.5–2.5 Ga) that probably represent the age of the Tarim craton basement.
Recent data on the isotopes and geochemistry of kimberlites of the TSNIGRI-Arkhangelskaya pipe, Arkhangelsk diamondiferous province (Northern East-European platform)
Authors: Agasheva E. V. , Zyryanova L. V. , Agashev A. M. , Soloshenko N. G. , Pokhilenko N. P.
Published: December 2024

The first data on the bulk and isotopic (Sr, Nd) composition of kimberlites from the low-diamondiferous TSNIGRI-Arkhangelskaya pipe, located in the Kepino field of the Arkhangelsk diamondiferous province, are presented. It is shown that the kimberlites belong to the moderate titanium type of kimberlites of the province and differ significantly from the previously studied kimberlites of the Kepino field in lower concentrations of TiO2, Ba, high field strength and light rare earth elements. Among all the kimberlites of the province, the kimberlites of the TSNIGRI-Arkhangelskaya pipe have the most radiogenic Sr composition (87Sr/86Sr t from 0.7068 to 0.7089), which may be due to a combination of several factors. It has been established that the kimberlites of the pipe are represented by two varieties, which have differences both in the concentrations of major and trace elements, and in the compositions of Sr and Nd isotopes. The composition of Nd isotopes (εNd from 0 to –0.6) for variety I kimberlites indicates their enriched source in the lithospheric mantle. Kimberlites of variety II have a less radiogenic Nd composition (εNd from –3.5 to –4.9), the interpretation of which is ambiguous: their formation from an even more ancient enriched source inside the lithospheric mantle compared to variety I cannot be excluded.
Structural heterogeneities of lithium-bearing layered silicates of paleocarst kimberlites and their prospecting value (Middle-Markhinsky diamond-bearing region, Western Yakutia)
Authors: Nikulin Iv. Iv. , Boeva N. M. , Bortnikov N. S.
Published: December 2024

Clay minerals formed as a result of hydrothermal activity within kimberlite pipes were redeposited into the horizons of the Lower Jurassic diamondiferous deposits of the near-facies facies. The mineral composition of the Lower Jurassic Dyakhtar sequence, composed of paleodeluvium and paleokarst deposits, has been studied in the immediate vicinity and at a distance from kimberlite pipes. Mixed-layer minerals with structural heterogeneities, in which an increased concentration (up to 0.1 wt %) of lithium is noted, were found in sections of erosion plumes of weathered varieties of kimberlite rocks. The thickness of sediments with such minerals decreases sharply at distances of more than 2 km from the desired kimberlite body. The identified features in the mineral composition of the deposits overlying kimberlite pipes can be used as new prospecting signs of diamond potential during geological exploration of primary sources of diamonds.
Hubungan Pola Asuh Ibu Dengan Kejadian Wasting (Indeks BB/TB) Kecamatan Gemuh Kabupaten Kendal
Authors: Mustikaningrum Ardian Candra
Published: December 2024

Status gizi merupakan salah satu faktor yang menentukan kualitas tumbuh kembang yang pada akhirnya berpengaruh terhadap kualitas sumber daya manusia. Status gizi digambarkan dengan besaran masalah gizi pada kelompok anak Balita. Secara global 45,4 juta mengalami gizi buruk. Di Asia Tenggara prevalensi Balita yang mengalami wasting sangat tinggi sebesar 14,5 %, sedangkan di Jawa Tengah prevalensi wasting sebesar 7,9%. Salah satu Kabupaten di Jawa Tengah yang memiliki prevalensi wasting cukup tinggi yaitu Kabupaten Kendal sebesar 10,1 %, dengan prosentase prevalensi d Kecamatan Gemuh sebesar 7,44 %. Faktor penyebab wasting adalah asupan makanan, penyakit infeksi , dan pola asuh. Kecamatan Gemuh merupakan daerah pedesaan dengan tingkat ekonomi rendah, berdasarkan survey pendahuluan bahwa cakupan pemberian ASI Eksklusif rendah (12%), kebiasaan pola makan yang sering dikonsumsi anak adalah makanan jajanan, dan rata- rata frekuensi makan dua kali sehari. Penelitian ini bertujuan mengetahui hubungan pola asuh ibu dengan kejadian wasting. Metode penelitian ini menggunakan observasional analitik dengan rancangan cross sectional, dengan jumlah sampel 110 Balita yang diambil dengan teknik purposive sampling. Pengambilan data dengan kuesioner dan wawancara serta analisis data menggunakan uji Chi-Square. Hasil penelitian ini menunjukkan 44,6 % mengalami wasting, pola asuh baik 56,2%. Penelitian ini menunjukan tidak ada hubungan antara pola asuh ibu dengan kejadian wasting ( p=0,789). Bagi Ibu atau orang tua harus lebih memperhatikan pemenuhan gizi Balita, memanfaatkan pengetahuan yang ada untuk dapat memilih dan mengolah makanan yang bergiizi sesuai ketersediaan pangan yang ada dan berkualitas dalam menentukan jenis makanan dan jumlah makanan, serta jadwal makan sesuai kebutuhan anak.
Strength Analysis of Thin-Walled Steel SupaCee Sections Under Shear Actions
Authors: Nguyen Ngoc Thang , Pham Ngoc Hieu , Nguyen Le Thuy
Published: December 2024

SupaCee represents an innovative form of the channel section, achieved by incorporating stiffeners into the web, which has been shown to enhance stability and increase the sectional capacities. In theoretical calculations, various shear theories for cold-formed sections have been proposed. Traditionally, shear force was considered to be resisted solely by the web, and intermediate web stiffeners often excluded from design considerations. Recent advancements of a new design method namely The Direct Strength Method for cold-formed steel structures have addressed these issues. Incorporating these intermediate stiffeners is believed to improve the shear capacity of the channel section. This paper aims to assess the shear capacities of SupaCee sections by comparing such capacities with those of traditional channel sections. The sections for analysis are selected from commercially available options. The capacities of both SupaCee and channel sections are calculated according to the Australian Standard AS/NZS 4600-2018. The results will provide insights into the effectiveness of SupaCee sections in enhancing shear strengths compared to those of traditional channel sections.
BIM-Based Parametric Modeling: Design Innovation and Project Demonstration of Special-Shaped Steel Structure Engineering
Authors: Chen Yu , Zheng Shenglan
Published: December 2024

In the intricate landscape of special-shaped steel structure design, where complexity and uniqueness are paramount, the integration of Building Information Modeling (BIM) has proven to be a game-changer. Specifically, BIM significantly expedites the creation of steel structure models and streamlines the engineering drawing process, enhancing both accuracy and efficiency. This paper spotlights a case study from a subway station project in Shanghai, leveraging the inherent parametric modeling capabilities of Revit software to design complex steel structures. Our investigation explores the methodology and foundational principles guiding the development of parametric special-shaped steel structure models. We emphasize the critical importance of the initial design stages in laying the groundwork for project success. The advantages of employing parametric technology are underscored, notably increased productivity and reduced labor costs, illustrating its potential to streamline complex steel structure projects. Furthermore, the research illuminates how parametric technology can profoundly reshape the steel structure industry. By fostering a more agile and cost-effective design and construction process, it optimizes resource allocation and accelerates project timelines. This makes parametric technology an indispensable element in the ongoing modernization of construction practices. The insights gleaned from this study contribute to the expanding body of knowledge on the practical application of BIM and parametric modeling in complex engineering projects. Our findings offer a roadmap for future advancements, guiding the field towards more sophisticated and efficient design methodologies.
Performance Research and Mechanism Analysis of Industrial Solid Waste Geopolymer Stabilized Crushed Stone
Authors: Li Yongxiang , Ji Kuiliang , Li Xiao , Lv Li , Mu Ren
Published: December 2024

With the development of industry, the development and utilization of a large number of natural resources in Inner Mongolia, a large number of industrial solid waste storage caused a series of environmental problems. Using industrial solid waste such as Mineral powder, fly ash and wet carbide slag to prepare geopolymer to replace part of cement for pavement base construction, not only solves the problem of large solid waste consumption, but also protects the environment. In this paper, the strength variation law and strength formation mechanism of mixtures with different geopolymer content were studied by mechanical property test, scanning electron microscope (SEM) and mercury intrusion porosimetry (MIP) test. Meanwhile, based on the grey relation theory, the correlation degree between the indexes of harmful pores, harmful pores and total porosity and the mechanical properties indexes was obtained. The results show that the performance of the mixture is also different with the different content of geopolymer. In the case of 20% geopolymer content, the UCS (unconfined compressive strength) and ITS (indirect tensile strength) at the same age are better than those of the mixture without geopolymer, while the mechanical properties of the mixture with 40% geopolymer content are lower than those of the mixture without geopolymer. The grey relation analysis shows that the UCS and ITS of the mixture under different geopolymer content are mainly affected by the rise of harmful holes, while the CRM (compressive resilient modulus) is not affected by the change of pore size, but decreases with the increase of geopolymer content.
Analysis on Mixture and Structural Layer Design Using High-Strength Cold Laid Asphalt Pavement
Authors: Liu Shaopeng , Yang Xing , Han Jinyang
Published: December 2024

High strength cold laid mixtures are environmentally friendly and not limited by temperature, while also avoiding defects such as insufficient compaction caused by temperature loss that cannot be avoided by hot mixed mixtures. However, in order to achieve the effect of hot mixed asphalt pavement, the structural design of the pavement needs to be analyzed and studied specifically based on the mechanical properties of high strength cold mixed asphalt mixtures. This study first conducted the design of high-strength cold mixed asphalt mixture, and compared it with conventional modified AC-13. Two pavement structural design schemes were selected and analyzed for pavement mechanics. The research results show that the suitable gradation for HCM is SAC-10, and the optimal asphalt content without water is 6.3%, while the actual emulsified asphalt content with water is 10.2%; The modulus of HCM at 15 °C and 20 °C reaches 3498 and 3009 MPa, respectively, demonstrating high stiffness and strength, while also possessing a certain degree of flexibility; When high-strength cold laid asphalt is selected as the upper layer, the maximum values of surface deflection, bottom tensile stress, and interlayer shear stress under standard load are 21.9 (0.01 mm), 0.09 Mpa, and 0.22 Mpa, respectively. Various indicators have been significantly reduced compared to conventional road surfaces, and the overall thickness of the road surface has been reduced compared to conventional schemes, while performance has been improved.
Optimal Parameterization Study of 3D Ground-Penetrating Radar Under Road Detection
Authors: Li Yongxiang , Chen Fa , Kang Xiatong , Chen Yanjun , Song Xiaoqiang , Li Wenqiang , Ji Pei , Mu Ren
Published: December 2024

3D ground-penetrating radar can realize rapid non-destructive detection of the structure interior compared with conventional inspection and has the advantages of high efficiency and high resolution, which has its unique advantages when applied to road inspection and disease identification. Since the setting of the parameters of the radar acquisition software has a large impact on the quality of disease mapping, it is necessary to carry out research on the optimal parameters of radar under different detection needs. In order to obtain the optimal parameter settings for the optimal 3D radar images under different working conditions, the best parameter settings under different detection demands are obtained through orthogonal tests using extreme difference analysis, with sampling spacing, dwell time and speed as factors, and information entropy and energy gradient as evaluation indexes, and by analyzing and evaluating the test results. The results show that the parameter settings for the best results of the data acquisition software vary greatly under different needs, and the parameter settings for the detection of internal road damage are 5 cm sampling spacing, 2 µs residence time, and the best image at a speed of 10 km/h; and the recommended parameters for the thickness detection are 8 cm sampling spacing, 2 µs residence time, and the speed does not exceed the maximum speed limit. The results of this study provide theoretical and practical significance for the better application and promotion of ground-penetrating radar in road detection.