bluuebunny/crossref_metadata_2025 huggingface dataset:
Enhancing Trench Stability: A Geogrid Reinforcement Approach
Authors: Poursorkhabi Ramin Vafaei , Rostami Sonia , Naseri Alireza
Published: March 2024

This paper investigates trench stabilization using geogrid reinforcement, employing static analysis via the finite element numerical method through PLAXIS 2D. Focusing on the challenges associated with soil instability in construction projects, particularly earthen roofs and rocky formations, the study emphasizes the potential for structural compromise and fragmentation due to erosion and weathering. Geogrid polymer networks, strategically integrated with soil and stone, emerge as a preventive measure against such disasters. Notable advancements in geogrid-related research are surveyed, establishing the context for this study. The methodology encompasses a simulated trench environment, systematically reinforced with geogrid in 10 layers, within an 8×35-meter earthen area. The properties of soil materials and geogrid specifications are detailed, while standard boundary conditions emulate real-world scenarios. Fine meshing ensures result accuracy, and trench width reduction analysis reveals a crucial correlation between diminished dimensions, augmented displacement, and decreased safety factor. The results highlight a heightened instability within the trench as it undergoes dimensional changes. The decrease in trench length directly correlates with a reduction in safety factor, underscoring the risk of compromised structural integrity. Reducing the length of the trench from 15 meters to 14 meters is associated with an approximate 1% increase in displacement, concurrently accompanied by a 9% decrease in volume. This insight emphasizes the need for meticulous trench dimension considerations in construction practices. The findings contribute to the geotechnical engineering field, prompting a reevaluation of design methodologies and offering empirical evidence for the development of robust guidelines in trenching projects.
High Expression of Kynurenine Pathway Markers in Glioblastoma: Prognostic Relevance
Authors: Jacquerie Arnaud , Hoeben Ann , Eekers Daniëlle BP , Postma Alida A. , Vanmechelen Maxime , de Smet Frederik , Ackermans Linda , Anten Monique , Severens Kim , Hausen Axel zur , Broen Martijn , Beckervordersandforth Jan
Published: March 2024

Purpose
Glioblastoma (GBM) continues to exhibit a discouraging survival rate despite massive efforts to improve therapeutic outcomes. Among other factors, an immunosuppressive microenvironment contributes to this treatment resistance. Notably, the kynurenine pathway (KP) has emerged as a potent regulator of the tumour immune environment in glioblastoma. Our study aimed to investigate the influence of the kynurenine pathway on the survival of newly diagnosed GBM patients.
Methods
GBM tissues of 108 patients were assessed for the expression of key kynurenine pathway markers by immunohistochemistry: tryptophan 2,3-dioxygenase (TDO2), indoleamine 2,3-dioxygenase (IDO1/2) and the aryl hydrocarbon receptor (AhR). For each individual patient, three tumour cores were used and the expression levels of KP markers were scored by using QuPath. Kaplan-Meier and stepwise multivariate Cox-Regression analyses were used to assess the impact of these KP markers on survival.
Results
Patients with high concomitant expression of TDO2, IDO1/2, and AhR had a shorter survival than patients with low KP marker expression. This remained significant even in multivariate analyses (IDO1 HR = 3.393, 95%CI: 1.707–6.748, P < .001; IDO2 HR = 2.775, 95%CI: 1.504–5.119, P = .001; TDO2: HR = 1.891, 95%CI: 1.105–3.236, P = .020; AhR HR = 1.902, 95%CI: 1.160–3.119, P = .011).
Conclusion
High expression of concomitant KP markers is of significant negative independent prognostic value for GBM patient survival probably due to their immunosuppressive properties. KP markers might be used for patient stratification for treatment purposes with respect to potential future immunomodulating trials.
Compassionate use of cefiderocol in a complex case of extensively drug-resistant Acinetobacter baumannii fracture-related infection: a comprehensive approach and multidisciplinary management
Authors: Flavia Petrucci , Beatrice Perciballi , Marco Rivano Capparuccia , Giancarlo Iaiani , Federico Lo Torto , Diego Ribuffo , Stefano Gumina , Daniele De Meo
Published: March 2024

Purpose
Fracture-related infections (FRI) pose a difficult management problem, as they require numerous surgical interventions and extended antibiotic treatments, especially when a multidrug-resistant organism is involved, with a paucity of available literature that provides guidance.
Results
A 42-year-old male presents an open diaphyseal tibia and fibula fracture, complicated by soft tissue necrosis and infections caused by extensively drug-resistant Acinetobacter baumannii (XDR-Ab). Initially treated with a damage control external fixator, the patient underwent multiple surgical procedures, including radical debridement, negative pressure wound therapy, external fixator revisions and reconstructive surgery using a latissimus dorsi free flap. The emergence of colistin resistance in the Acinetobacter baumannii strain led to the compassionate use of cefiderocol, finally achieving clinical cure.
Conclusions
This case report is one of the firsts that highlights the potential efficacy of cefiderocol in treating challenging bone and joint infections sustained by XDR-Ab. The successful outcome also emphasizes the importance of a comprehensive, multidisciplinary approach in achieving favorable results in complex FRI.
Potential toxic heavy metals in rhizosphere soils and crops under a black shale high geological background: pollution characteristics, ditribution, and risk assessment
Authors: Chen Luyuan , Ren Bozhi , Deng Xinping , Yin Wei , Xie Qing , Cai Zhaoqi , Zou Hao
Published: March 2024

The Lou-Shao Basin in Hunan Province, as a high geological background area, contains two sets of black rock series rich in various potential toxic heavy metal elements. These rock series are rich in various potential toxic heavy metal elements such as cadmium, lead, zinc, copper, vanadium, nickel, etc. This paper selects the soil and crops in the core arable land area under high geological background as the research object and analyzes the current status of heavy metal element pollution in non-rhizosphere soil, rhizosphere soil, and major crops. The research results show that due to the weathering of black shale into soil, the content of heavy metal elements (such as Cd, Ni, Cu, As, Hg, Pb, and Mn) is significantly higher, exceeding the background values of elements in Hunan, making it a typical high geological background area. The Igeo level of the heavy metal element chromium (Cr) is relatively high in all crops (maize Igeo=6.71), indicating serious pollution. The pollution situation of other elements varies with different crops, consistent with the Pollution Load Index (PLI) results. The spatial distribution of heavy metal pollution in crops shows a strong spatial pattern, with high-value areas concentrated in the southeastern region. The ecological risk of each element in soil samples is Cr > Mn > Cd > As > Se, while in crop samples it is Se > Cd > Cr > As > Pb > Hg. Human health risk assessment indicates that humans may be exposed to these heavy metals through skin contact and food chain intake. The hazard index (HI value) of the heavy metal element Cd is greater than 1, and the potential carcinogenicity of Cd may lead to related diseases such as kidney stones, posing a higher risk to children.
Isolation and identification of bacterial isolates producing Arginine deiminase from assorted soil environments in Egypt using16S rRNA sequencing technique
Authors: Kassab Mohammed Mahmoud Shawky
Published: March 2024

Background:
Auxotrophic cancers for Arginine are a leading cause of death worldwide. The manufacture of novel arginine degrading enzymes such as Arginine deiminase enzyme is mandatory due to this crisis.
Aim of the study:
Since certain tumor cells are auxotrophic for Arginine, the depletion of the extracellular Arginine by means of Arginine deiminase enzyme was exploited in the present study to target such tumors.
Methodology:
Selective recovery of some bacterial isolates from different environmental sites in Egypt and assessment their capabilities for Arginine deiminase production. Studying environmental and physiological factors affecting Arginine deiminase production by some selected isolates. Characterization of of activity Arginine deiminase produced by certain selected isolates as well as its production through bacterial recombinant DNA technology.
Results:
The major bacterial isolates grown on mineral Arginine agar( MAA) plates producing ADI were further identified as Bacillus subtilis DE 111 using 16S rRNA sequencing technique. The Arginine deiminase production and activity were optimal at 40℃ and alkaline pH. Mn+2,Ni+2 and Co+2 metal ions as cofactors were optimum activators for production and activity of ADI. The results showed that the potent cytotoxic consequences of ADI were exerted on the renal and leukemic cancer cell lines. ADI produced via bacterial recombinant DNA technology showed efficacious IC50 10.31± 0.2 and 16.08± 0.3 µg/ml against renal( Caki-1) and leukemic( K-562) cancer cell lines, respectively. The purified monomeric ADI was 36.18 KDa molecular mass as determined using SDS-PAGE, the specific activity reached 36.07 U/mg. Km,Vmax and Kcat were 0.05871 M, 40.36 µmol/ml/min and 5.014min-1respectively. Optimum pH and temperature for productivity and activity ranged from 6-10 and 37-70℃,respectively. Total protein estimation using Bar-ford assay was determined to be 5.68 mg during the initial culture. ADI purification was achieved using 70% Ammonium Sulfate followed by Ni+2-immobilized affinity column chromatography with a final purification fold of 15.03.In vitro determination of biological half life of ADI using nesslerization assay was observed to be nearly 300 min.
Conclusion:
ADI produced from Bacillus subtilis DE111 demonstrated efficacious anticancer activities against leukemic( K-562) and renal( Caki-1) auxotrophic cancers for Arginine due to the depletion of L-arginine from the external surrounding environments.
Biomimetic Silk Fibre Assembly: Mimicking Nature's Pultrusion Process
Authors: Moreno-Tortolero Rafael O. , Michalski Juliusz , Wells Eleanor , Gibb Flora , Skaer Nick , Walker Robert , Serpell Louise , Holland Chris , Davis Sean
Published: March 2024

Among the best natural structural materials, silks have remarkable properties due to their hierarchical structure. The silk proteins from spiders or caterpillars, despite being distinct Classes, are produced by similar mechanisms with conserved features. They are stored as aqueous liquid solutions that undergo irreversible liquid-to-solid transformations driven by different stimuli, primarily pH and shear strain. This transformation has attracted the attention of many researchers aiming to replicate this apparently facile process. However, most biomimetic assembly processes that have been developed rely on extrusion-based technologies or flow-focusing microfluidic devices, typically using coagulating baths with unnatural solvent conditions. These synthetic processing strategies differ substantially from natural, all-aqueous, pultrusion-based fibre production and increase the overall energy input required to drive the transformation. In contrast, we observe that native-like silk fibroin (NLSF) rapidly forms a highly viscoelastic film at the air–water interface. This phenomenon is then exploited by applying an extensional strain field to produce multimeter silk-like fibres with observable coaligned nanofibrillar bundles. Our studies showed that the proteins undergo stress-induced denaturation, consistent with a model of hexagonal packing of β-solenoid units, at low pulling speeds, at which point the proteins switch to a β-sheet-rich structure as the speed increases. Moreover, the produced fibres showed optimal mechanical properties when the pulling speeds were near the maximum physiologically relevant speeds (ca. 30 mm/s). s pulled at 26.3 mm/s had an elastic modulus of 8 ± 1 GPa and a toughness of 8 ± 5 MJ/m2, which is commensurate with the mechanical performance of natural fibres. Moreover, the method demonstrated here is readily compatible with complex material fabrication under ambient conditions, opening up the possibility of facile incorporation of cells and biomolecules. Overall, the developed method replicates the natural pultrusion process entirely water-based and offers great potential for the future development of novel fibre-based composite materials.
Mentoring in Salary Negotiation for Female Sport Management Students
Authors: Grappendorf Heidi , Veraldo Cindy , Grube Angela , Farrell Annemarie
Published: March 2024

Female professors continue to make less than their male counterparts. In traditionally male dominated fields, such as sport management, the pay gap can be even greater. To gain further insight into the salary negotiation process, the specific role of mentoring was examined utilizing qualitative research, and specifically semi-structured interviews conducted with female sport management professors. Open-ended coding was employed to analyze the data. Female participants reported they had limited mentoring for the salary negotiation process and felt there were barriers that influenced if mentoring took place. Participants did indicate informal mentoring occurred, and some reported the development of meaningful relationships specifically with major advisors who intentionally provided advice and mentoring related to the salary negotiation process. Being cognizant of gender roles and utilizing mentoring strategies is critical to addressing salary and the continued gap in salary amongst female and male professors in sport management.
INFLUÊNCIA DO PROCEDIMENTO DE AJUSTE GRANULOMÉTRICO DE AMOSTRAS DE CERÂMICA VERMELHA AGREGADA COM RESÍDUOS DE ROCHAS ORNAMENTAIS PARA CLASSIFICAÇÃO CONFORME CRITÉRIOS DA ABNT
Authors: de Freitas Alcione , Neves Mirna Aparecida , Guimarães Damaris , Taguchi Simone
Published: March 2024

INFLUENCE OF THE PROCEDURE FOR GRANULOMETRIC SAMPLE ADJUSTMENT OF RED CERAMIC AGGREGATED WITH DIMENSION STONE WASTES FOR CLASSIFICATION ACCORDING TO THE ABNT CRITERIA’S. In order to clarify questions about the granulometric preparation of samples for the classification of solid wastes according to the Brazilian technical standard (NBR 10004/04), solubilization tests were carried out on red ceramic specimens made with conventional clay aggregated with ornamental rock residues. Samples were prepared by fragmentation and milling to verify the effects on metals releasing to the extractor medium. The specimens were made with 80% clay, 20% residue and 10% (m/m) moisture and sintered at 1000 °C. The data show that ceramics made with conventional clay, when discarded, will produce non inert wastes, as well as the ceramics made with dimension stone wastes added to the conventional raw material, according to the granulometry of its particles. After all, the metals concentration in the solubilization test are influenced by the sample granulometry. This paper shows that the method of granulometric adjustment should be detailed in the technical standard for solubilization tests (NBR 10006/04), in order to ensure the reliability of the method for classification of solid wastes.
Chemical Characterization and Evaluation of the Antitumoral Activity of Annona tomentosa R.E.Fr. on Breast (MCF-7) Three-Dimensional (3D) Tumor Spheroids
Authors: Pinheiro Aglaete , Lee Celina , dos Santos Anna Gabriele , Pereira Érica , do Rosário Marcelino , Ribeiro Diego Luis , Serpeloni Juliana Mara , da Rocha Cláudia
Published: March 2024

Annona tomentosa, popularly known as “araticum marolo”, is an Annonaceae with little scientific evidence regarding its phytochemistry and biological activities. Based on this, the present study carried out the chemical characterization of the methanolic extract and fractions of ethyl acetate and alkaloid of the stem bark of A. tomentosa, in addition to evaluating their influence on the viability, proliferation and migration of breast (MCF-7) cells in a three-dimensional (3D) model. The samples were analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS), and the Global Natural Products Social Networking (GNPS) platform was used to construct a molecular network. 21 compounds were identified, of which 16 belong to the alkaloid class. Multicellular spheroids (MCTS) growth was reduced after 216 h of treatment, as well as their viability (ca. 50% for the extract and ca. 25% for the alkaloid fraction). The extract and the alkaloid fraction showed greater antiproliferative (at a concentration of 100 µg mL-1 after 216 h, ca. 48% for the extract and ca. 20% for the fraction) and antimigratory (at concentrations 50-500 µg mL-1 for the extract and 100-250 µg mL-1 for the fraction) effects. This study is pioneering in demonstrating the antitumor effects in a 3D culture model, also revealing its potential for the isolation of alkaloids.
Convenient or Marketing matters? Unveiling the Determinants of Purchasing Decisions in Tokopedia E-Commerce
Authors: Sufyan Izeldin Khalid , Pamuncak Mohammad Bintang
Published: March 2024

This paper investigates the determinants of purchasing decision of Tokopedia e-commerce consumers with Gen-Z as a sample. This paper refers to Technology Acceptance Model (TAM) as theoretical framework, where the indicators use in this study combines both  convenient matter in purchasing at e-commerce such as Artificial Intelligence (AI) and marketing matters from both digital and non-digital marketing i.e., Islamic Marketing Ethics (IME). This paper employs Structural Equation Model-Pooled Least Square (SEM-PLS). The results show that AI and Digital Marketing (DM) have positive and significant relationship to influence consumers’ decision to purchase in Tokopedia. Meanwhile, IME has positive but non-significant relationship with purchase decision. This paper argues that this is due to the respondents’ knowledge of Sharia compliance in e-commerce transaction and lack of IME indicators socialization by Tokopedia, where Tokopedia already implement some indicators of IME in their feature such as Halal Corner. The result expects to contribute to development of theoretical and practical implication, particularly on Marketing matters both digital and Islamic marketing ethics.
Bacterial Surface-Ripened Cheeses. Specific features of production technology
Authors: Zolotarev Evgeniy , Rogov Grigorii
Published: March 2024

As the Russian dairy industry keeps increasing the domestic cheese production and product range, the popularity of cheeses with surfaceripened rind continues to grow. However, this technology is very different from that of semi-hard cheeses, which Russian consumers are more accustomed to. To obtain a surface-ripened rind, cheese producers have to control the bacterial consortium of surface microflora at every production stage. As a result, they need special approach not only to curd production but also to the entire process of cheese maturation.
Integral Approach to Whey Classification
Authors: Kruchinin Alexandr , Melnikova Elena , Barkovskaya Irina
Published: March 2024

In 2014-2020, the Russian cheese and cottage-cheese market turned to import substitution, which boosted the volume of whey production. However, whey processing for food purposes remains as low as 20–30%. Despite the constant state control and penalties, most dairy plants prefer to dump whey in the sewage system, where it mixes with wastewater, which is environmentally and economically irrational. The factors that prevent the dairy industry from transiting to complete cycles of whey deep processing include the lack of unified terminology and standardization of secondary dairy raw materials. Mechanisms of dairy protein coagulation are different, which leads to numerous standardization issues. Other technological factors also contribute to the differences in criteria approaches. This article introduces a new whey classification system based on an integrative approach that takes into account the main technological aspects of whey production. It relies on scientifically substantiated mechanisms of protein coagulation, i.e., rennet, acid, acid-cheese, thermoacid, and thermo-calcium, as well as on the principle of microfiltration of dairy raw materials in obtaining micellar casein. As a secondary factor, the research involved curd, casein, and coprecipitate whey. The resulting integrative approach to whey classification will make it possible to perform whey processing depending on whey properties, as well as to create new models of complete deep processing cycle.
Rapeseed Oil in Cream Cheese Vegetable Spreads
Authors: Pirogova Ekaterina , Danilova Ekaterina
Published: March 2024

Dairy spreads are popular all over the world. However, the Russian market of dairy spreads should rely both on the modern concept of healthy nutrition and the domestic strategy for improving the quality of food products. The authors optimized the fatty component of cream cheese spreads by adding rapeseed oil. The article introduces its fatty acid composition and effect on the structural, mechanical, physical, chemical, and sensory indicators of the finished product. The indicial cream cheese vegetable spread had a fat mass fraction of 72.5 %; the share of rapeseed oil added to the fat phase was 10–40 %. The rapeseed oil had no negative impact on the sensory profile of the spread. However, as the proportion of rapeseed oil increased, the structural and mechanical properties deteriorated. The consistency became too soft, which made it difficult to cut the mass into bricks. If the share of rapeseed oil exceeded 10 %, the spread had to be packaged in plastic boxes. The article contains some recommendations on how to obtain the optimal consistency, structural properties, and consumer appeal of the new cream cheese vegetable spread.
Labor Practices of Remote Countryside Non-Working Population (on the Example of Khakassia)
Authors: Lushnikova Olga
Published: March 2024

In conditions of prolonged unemployment, the sphere of labor and employment in rural areas is trans­forming. The labor market is changing, informal practices are spreading, new forms of employment are emerging, the number of villagers who do not want or are unaccustomed to work is growing, etc. The article aims at identifying labor practices among the unemployed population of remote territories using the example of Khakassia. Geographical remoteness is an additional factor limiting the possibilities of rural population labor behavior. The study was conducted based on a sociological survey of region’s remote areas residents (n = 404). The article compares the groups of villagers who are unemployed for different periods. The socio-demographic composition of these groups, as well as the strategies of their work behavior, differ. The first group of respondents, those who did not work for up to a year, can be considered frictionally unemployed. Most of them are able-bodied people living in large villages with a relatively high level of prosperity and focused on various labor strategies. The second group, people who did not work for several years, is quite diverse in its composition and represents almost all segments of the rural population. The respondents of this group are engaged in personal subsidiary farming, which serves as an alternative to formal employment. The third group consists of women of reproductive age who have never worked. They do not aim at finding work or other forms of self-employment, since their main activities are household management and childcare. Casual earnings (extra money made on the side) and fishing activities are common among the unemployed population, but the income from such activities is low and unstable. In general, the labor practices of the remote territories’ unemployed population depend on various factors, but the personal motivation of the villagers, which determines the strategy of their labor behavior, has the greatest influence.
Improving the Financial Control System of Securities Market Professional Participants’ Activities
Authors: Vyzhitovich Aleksandr , Tahtobina Margarita
Published: March 2024

The article provides an overview of the institutional aspects of regulating the securities market professional participants’ activities, allowing to identify key shortcomings in their functioning and reveal the insufficient effectiveness of control measures. The aim is to develop a concept of financial control taking into account the identified problematic factors and ensure the possibility of improving the financial control system in the context of professional participants representing the subjective side of the financial market. The methodological novelty of the author’s approach lies in the research algorithm. It includes creating the state financial control concept for the securities market professional participants’ activities based on the analysis of scientific literature, the definition of characteristic problems in the state financial control, the disclosure of the structure of its improvement concept by creating indicators for monitoring and formulating proposals for implementing the recommended measures. The financial control procedure ensures the activities’ legality, the implementation of the current regulatory framework for conducting transactions of financial resources, the openness and accessibility of financial transaction mechanisms. Currently, there are organizational and regulatory gaps that directly affect the financial control procedure, caused by, among other things, digital solutions, the introduction of the digital ruble and a number of other transformations. The result of the research is the author’s concept aimed at improving the financial control system of securities market professional participants’ activities.
A film mint egyedi szolgáltatástermék szolgáltatásmarketing szemléletű elemzése
Authors: Horváth Ádám , Gyenge Balázs
Published: March 2024

A kulturális javak között a film egyik sajátossága, hogy meg­jelenésétől és adottságaitól függően a termék–szolgáltatás spektrum mindkét oldalán elhelyezhető, de a legtöbb esetben a kettő között ingázik. Megtekintési módjától függően eltérő tulajdonságokkal rendelkező, illetve merőben eltérő fogyasztói magatartási formákat kiváltó, összességében egyfajta részben tárgyiasult szolgáltatástermékként lehet kezelni. Jelen tanulmány a fenti kijelentések tükrében vizsgálja a szolgáltatásmarketingben használatos tipológia alkalmazhatóságát a filmek esetében. Ezt követően az elemzésben megkülönbözteti és csoportosítja a házon kívüli, otthoni és az alternatív megtekintési módok esetében felmerülő jellemzőket a szolgáltatásmarketingben használatos „7P” marketing mix értelmezése szerint. Végül korábbi kutatások eredményein keresztül vizsgálja a különböző szempontok hatásait a fogyasztókra, illetve különösen a (hagyományos és digitális) filmes tartalom szolgáltató vállalatokra nézve.
Modelling urban stormwater and irrigation management with coupled blue-green infrastructure in the context of climate change
Authors: Breulmann Marc , Müller Roland Arno , van Afferden Manfred
Published: March 2024

Urban planners must consider stormwater infrastructure to prevent floods, enhance resilience and promote sustainability, ultimately benefiting cities by minimizing damage and fostering sustainable growth. This is leading cities to consider the implementation of urban blue-green infrastructure (BGI) as an integrated approach to stormwater management. An urban irrigation model, blue-green infrastructure irrigation (B-GRIIN), has been developed that incorporates BGI and the possibility of reusing stormwater for irrigation to facilitate the design of zero-runoff urban blocks. Simulations based on rainfall time series, including an extremely dry year, have shown that it is possible to achieve a zero-water balance and provide sufficient water for irrigation by implementing coupled BGI. However, water availability in extremely dry years may limit the full irrigation of all green areas. The results have also shown that the evapotranspiration scaling factor kc has a large influence on the predicted irrigation volume and thus on the overall water balance. The B-GRIIN model makes it possible to couple the rainwater management functions of different BGIs, determine their water requirements and provide sufficient irrigation water. As a result, it can serve as a basis for holistic planning and operation of BGI in order to achieve a zero urban water balance.
Analyze the Impact of Mobility and Pause Time on ACO based Manet Routing Protocols - Review
Authors: Kour Satveer , Sarangal Himali , Singh Manjit , Singh Butta
Published: March 2024

Recently, many researchers have studied its performance within Mobile Ad-hoc Networks
(MANETs). Every ad hoc network protocol focuses on a different set of measurements and
traits. The majority of the currently utilized mobility models are employed to provide realistic
movement patterns for MANET scenarios. A crucial element in the creation of MANET protocols
is simulation. The future topology of a network can be predicted, which enables Quality of service-
aware routing to choose a dependable link for data transmission. Ant algorithms, also known
as swarm intelligence, are a wider field of study that deals with algorithmic approaches that are
motivated by the behaviour of ant colonies and other insects. Ant Colony Optimization (ACO) is a
subset of this larger topic. Based on the pheromone value deposited over the link, we identified
two categories for the link quality in the proposed approach. We have demonstrated how the network's
performance is enhanced by the suggested technique. The nodes are moving in the specified
terrain dimensions through the Enhanced Manhattan Mobility Model (EMMM). The five QoS
performance metrics are analyzed over three MANET routing protocols. The comparison is made
over two important factors-mobility and pause time with the proposed ACO technique of reliable
links. In the first experiment of different speeds, DSR is 25.5% better than AODV and 5.3% better
than DSDVin metric packet dropping, 1.15% better than AODV and 1.01% better than DSDV in
Packet Delivery Ratio, 1.5% better than AODV and 1.04% better than DSDV in packet overhead,
and 62.7% better than AODV and 73.1% better than DSDV in average end-to-end delay. In the
second experiment of pause times, DSR is 25.05% better than AODV and 4.5% better than DSDV
in packet dropping, 1.18% better than AODV and 1.01% better than DSDV in packet delivery
ratio, 1.01% better than DSDV in throughput, 0 to 0.002% in packet overhead, and 0.02% to
0.005% shorter delay.
PROPOSED STRATEGY OF MRO OPTIMIZATION IN COST-EFFECTIVE PROGRAM BY USING KEPNER-TREGOE ANALYSIS AND ANALYTICAL HIERARCHY PROCESS (AHP)
Authors:   School of Business and Management, Institut Teknologi Bandung, Indonesia, Ariawan Yona , Yudoko Gatot
Published: March 2024

ADC Company is a global company that operates since the year 2000 that has an issue with Maintenance Repair and Operations (MRO) in its system. The current performance and objectives show that they need to take a look at something that can be done possibly and take the initiative that can be improving the company’s performance, especially in this kind of situation. The current setup of Maintenance Repair and Operations or MRO of this company has shown the value that this company has 43% Non-Moving Spare Part (PNM-SP) Material value that is excessive and has turned into a particular issue for the Company, which is supposed to be their fresh money that can be operated further. This inefficient inventory due to significant Potential Non-Moving Spare Part (PNM-SP) Materials all across the years has resulted in the inefficiency of Operational Expenditures (OPEX) which costs the company unused/ never used bought materials associated with handling and maintaining costs produced by those (PNM-SP) materials. The higher the inventory value and the remaining items/materials that cannot be utilized, then the worse the inventory performance reflects. Therefore, the business problem could be identified and further transformed into a problem statement. The objectives of this research are to overcome or reduce the volume of Potential Non-Moving Spare parts (PNM-SP) Materials in our organization, and what tactics or alternative solutions exist to avoid massive Potential Non-Moving Spare parts (PNM-SP) Materials, along with the precautions that should be taken in the event happens in the future, by using Kepner Tregoe Analysis and Analytical Hierarchy Process (AHP). As the result, observed there are 2 quick win actions that can be initiated, those are “Review Item Criticality and removal follow-up” and “Review the calculation and Quantity” consecutively, consistently selected by both Analytical Hierarchy Process (AHP) and Kepner-Tregoe Analysis that has potential effect for the company to sustain and growing up further.
A DECISION-ANALYTIC, SIMULATION BASED MANAGEMENT MODEL FOR A TWO-SHIFTS QUEUE SYSTEM WITH CUSTOMER RENEGING
Authors:   TecNM: Tecnológico de Estudios Superiores de Coacalco, Coacalco, México, Luis Chew Hernández Mario , Viveros Rosas Leopoldo , Velázquez Romero Verónica
Published: March 2024

This paper shows a management model for a queuing system operating two shifts and where client reneging is present. The model provides the optimal active server policy considering lost clients and cost. Using influence diagrams and decision trees, the proposed model implements a Bayesian scheme to update the initial knowledge in response to the observed number of lost customers in the first shift. In addition, a utility function is used to represent the preferences of the decision-maker and simulation to determine the consequences and probabilities of the trees. The results are displayed as the number of active servers recommended for each shift, according to the preferences of the decision-maker and the clients lost in the first shift. For the case study, it is found that if the weight for the number of lost clients in the utility function (kNL) is less than 0.63, a single server should be used in both shifts, while when kNL is greater than said value, the first shift opens one server, while a second one is activated for the next shift depending on the number of lost clients in the first shift.
Development of Uno Stacko Games-Based Learning Media Integrated with Qr Code on the Material of the Human Respiratory System in Increasing Interest and Understanding of Concepts for Grade VIII Middle School Students
Authors: Yunimuninggar T. D. , Fardhani I.
Published: March 2024

Game-based learning media is a media that can improve students' interest and conceptual understanding effectively. In this study, the research and development (RD) method was used by adopting the ADDIE model to develop a learning media based on Uno Stacko game with a focus on the topic of Respiratory System which was integrated with the QR Code. The effectiveness test that was used on the learning media was a quasi-experimental design. The media testing used three classes consisting of a trial class with a total of 25 students, as well as a control class and an experimental class, each of which consisted of 23 students. The results of the study of the students' learning interest with the Respiratory System Uno Stacko learning media along with further explanation by the teacher using the lecture method differ significantly from the learning interest of the students who only used the lecture method. The implementation of the learning media can improve learning interest. It can be seen from the result of the average percentage of the experimental class with a total of 81% which is higher than the control class with a total of 76
Application of the CIRC Model to Improve Learning Outcomes on Solar System Material in Class VII of SMPN 4 Tambang
Authors: Sa'adah Y. Z. , Syahril S. , Fakhruddin Z.
Published: March 2024

The research aims to improve students’ cognitive learning outcomes on Solar System material in the experimental class with the CIRC learning model and the control class with conventional learning. The research was conducted in May-June, the Even Semester of the 2022/2023 Academic Year at SMPN 4 Tambang, Tambang District, Kampar Regency, Riau Province. The population was all students of class VII which consisted of 10 classes and 315 students. The sample was selected using a purposive sampling technique. Class VII-B was selected as the experimental class and VII-C as the control class. The research was Quasi-Experimental with a posttest-only, Non-equivalent Control Design. The research showed that the posttest score in the experimental class was higher with a mean score of 77.9 in the category of good (B). Meanwhile, the control class obtained a score of 68.5 in the sufficient category (C). Inferential analysis with SPSS 25 was used to test the normality, homogeneity, and hypothesis. The normality and homogeneity tests showed the distribution of the both two classes were normal and homogeneous. Based on the hypothesis test with the Independent Sample T-test, a significance of 0.001 was obtained that there has been a significant increase in students' cognitive learning outcomes through the application of the CIRC model on the Solar System material in class VII of SMPN 4 Tambang.
Development of Socio-Scientific Issue Learning Videos in Order to Support Education for Sustainable Development of Hydrocarbon and Petroleum Materials for High School Students Grade XI
Authors: Jayanti A. A. , Dina D. , Fillaeli A.
Published: March 2024

This study aimed to develop learning videos based on socio-scientific issues in order to support education for sustainable development of hydrocarbons and petroleum materials for class XI Senior High School students. The method of the study was sequential exploratory mixed methods through the qualitative data collection stage, data analysis, and questionnaires. The developed videos contained three issues from the primary material in hydrocarbons and petroleum relevant to daily life. The created instructional videos are accessible online through the YouTube platform or via USB/Bluetooth file transfer. Usability and readability tests were performed to determine the feasibility of the generated learning videos; while the resulting percentages for usability and readability. Based on the result, videos were declared feasible by chemistry teachers and students at grade XI Senior High School so that videos can be used as the source of information based on the socio-scientific issue in order to support education for sustainable development of hydrocarbons and petroleum materials with usability and readability percentages respectively of 83.73% and 79.59%.
"Dingklik Oglak Aglik" Traditional Games Integration in Science Teaching Module to Promote Global Diversity
Authors: Primaharani S. , Widiyawati Y. , Sari D. S.
Published: March 2024

Teaching modules can help students effectively participate in learning and achieve successful learning outcomes through the merdeka curriculum. Developing games that are appropriate to science learning, one of which is traditional games. This research aims to test the feasibility of an integrated teaching module for the traditional game dingklik oglak aglik to promote global diversity so that it is suitable for use in schools at the junior high school. This research method is quantitative descriptive research. The data collection instrument used is an instrument for assessing the quality of teaching modules which is seen from 3 criteria, namely didactic, construction, and technical. The research results of the science teaching module integrated with the traditional game dingklik oglak aglik to promote global diversity showed very high validity reaching 94%. Teachers consider this teaching module to be very practical and suitable for use. Therefore, it can be concluded that the science teaching module integrated with the traditional game dingklik oglak aglik to promote global diversity has a high level of validity and practicality so this teaching module is suitable for usability.
Corpoica Mapiria Ao1, Corpoica Yopare Ao2, Corpoica Yucao Ao3. :clones de marañón para la altillanura plana de la Orinoquía colombiana
Authors: Clímaco Hio Juan , Guevara Agudelo Elsa Judith , Navas Arboleda Alejandro Alberto , Arango Wiesner Laura Victoria
Published: March 2024

Como fruto del trabajo colaborativo entre el Estado y las instituciones se pone a disposición del sector productivo de la altillanura plana de la Orinoquía colombiana el presente folleto, dando a conocer tres clones de marañon destacados por producción y calidad de exportación de la nuez, como una contribución esencial al sistema de producción que permitirá a los productores de la región incursionar en modelos de negocios más seguros y rentables.
Evaluación de algunas prácticas de manejo para el sistema productivo de arracacha en el municipio de Cajamarca, Tolima, Colombia
Authors: Atencio Liliana , Rodríguez Oscar , Dorado Francisco , Villamil Jorge , Garnica Johanna
Published: March 2024

La arracacha se siembra en 14 departamentos de Colombia, siendo el Tolima el que presenta las mayores áreas con 3.800 hectáreas, producción de 44.494 t y rendimientos promedios de 9,4 t/ha. De esta producción, 39.600 t son obtenidas en el municipio de Cajamarca, donde el cultivo presenta grandes limitaciones como uso indiscriminado de insumos químicos, mayor uso de mano de obra, realización de labores agrícolas innecesarias que afectan negativamente la sostenibilidad del sistema productivo, el ambiente y los factores económicos que garantizan el nivel de vida del agricultor
Cadena de plátano: anexo 5
Authors: Osorio Jairo Antonio , Morales Castañeda Alexis
Published: March 2024

El presente documento se preparó con el fin de proveer información básica sobre el desempeño de la cadena productiva, sus vínculos con la orientación de la ciencia, la tecnología y lainnovación y las demandas del sector sobre conocimiento técnico, para superar problemas productivos, mejorar la competitividad, la sostenibilidad, aprovechar oportunidades de mercado, potenciar capacidades y focalizar la inversión pública.Esta información se consolidó a través del proceso de revisión y ajuste de la Agenda Dinámica Nacional de Investigación, Desarrollo Tecnológico e Innovación (Agenda I+D+i), como insumo para orientar las estrategias del PECTIA
Departamento de Antioquia : anexo 6
Authors: Hernández Arredondo Juan David , Londoño Londoño Julián Alberto , Bermúdez Bedoya Adriana Mercedes , Rincón Novoa Rubiela , Cepeda Mónica
Published: March 2024

El presente provee información básica a nivel departamental del desempeño sectorial, sus vínculos con la orientación de la ciencia, la tecnología, la innovación y las demandas del sector sobre conocimiento técnico para focalizar la investigación publica, articular capacidades, aunar esfuerzos para superar problemas productivos, mejorar la competitividad y aprovechar oportunidades del mercado en distintas cadenas de productividad priorizadas en el departamento
Revisión de la agenda dinámica nacional de I+D+i : resultados por región. Anexo 7
Authors:   Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA,   Departamento Administrativo de Ciencia, Tecnología e Innovación,   Ministerio de Agricultura y Desarrollo Rural
Published: March 2024

El presente capítulo muestra los resultados por región de la Agenda Dinámica Nacional, a partir de la información consolidada de las agendas revisadas y dando a conocer un resumen de las demandas consolidadas en cada una de ellas
Departamento de Risaralda : anexo 6
Authors: Osorio Jairo Antonio , Ramírez Julio , Mateus Julián , Zuluaga María Victoria , Salazar José Fernando , Rincón Novoa Rubiela , Escobar Carlos , Sáenz Bernardo , Londoño Londoño Julián Alberto
Published: March 2024

El presente documento se preparó con el fin de proveer información básica departamental sobre el desempeño sectorial, sus vínculos con la orientación de la ciencia, la tecnología y la innovación y las demandas del sector sobre conocimiento técnico para focalizar la inversión pública, articular capacidades, superar problemas productivos, mejorar la competitividad y aprovechar oportunidades de mercado en las cadenas productivas priorizadas. Esta información se consolidó a través del proceso de revisión y ajuste de la Agenda Dinámica Nacional de Investigación, Desarrollo Tecnológico e Innovación (Agenda I+D+i), como insumo para orientar las estrategias del PECTIA en el ámbito departamental.
Vermicompost Leachate-Based Biostimulant and its Effects on Physiological Variables and Yield of Different Crops in Manabí, Ecuador
Authors: Torres-García Antonio , Héctor-Ardisana Eduardo Fidel , León-Aguilar Rolando , Zambrano-Gavilanes Freddy Eli , Fosado Téllez Osvaldo Alberto
Published: March 2024

Using large volumes of synthetic chemical fertilizers is a general practice in modern agriculture at a high economic and environmental cost. Biostimulants have become an alternative to this routine due to their ability to stimulate plant physiological processes without polluting soil and water. In Ecuador, however, little research has been carried out on the effect of biostimulants on the yield of crops of agricultural interest. The objective of this research was to determine the effect of foliar application of a biostimulant based on bovine manure vermicompost (VCLB) leachates on physiological variables and the yield of corn, cotton, and peanuts under field conditions and chard and five pepper hybrids in semi-protected cultivation under the agro-climatic conditions of the province of Manabí, Ecuador. The nine experiments carried out with the species and hybrids included various dilutions of VCLB and controls consisting of fertilization with nitrogen, phosphorus, and potassium, depending on the species, and soil without fertilizer. In all species, VCLB-induced plant length, chlorophyll content, and crop yield exhibit equal or higher statistical differences than those achieved under chemical fertilization (NPK). These results demonstrate the potential of this biostimulant as a sustainable alternative to produce these crops, reducing potentially the adverse effects of production on the environment under the tropical conditions of Manabí, Ecuador. We recommend corroborating these results with production-scale research.