bluuebunny/crossref_metadata_2025 huggingface dataset:
FPGA-Based Extended Control Set Model Predictive Current Control with a Simplified Search Strategy for Permanent Magnet Synchronous Motor
Authors: Yang Chenyu , Liu Kai , Hu Mingjin , Hua Wei
Published: November 2023

The conventional finite control set model predictive current control (FCS-MPCC) suffers from suboptimal steady-state performance, primarily due to the limited selection of only eight basic voltage vectors in each control cycle. To overcome this limitation, the proposed extended control set MPCC (ECS-MPCC) utilizes an control set consisting of 818 selectable vectors, enabling a more refined voltage output and achieving a deadbeat response for current control by minimizing the cost function. To mitigate the computational burden resulting from the substantial increase in voltage vectors, a simplified search strategy is devised, which can be extended to other multi-objective cost functions. Remarkably, based on the inherent parallelism of the algorithm, the ECS-MPCC is implemented on an FPGA, further reducing the overall control time of the current loop to an impressive 0.61 μs. Through simulation and experimental tests on a laboratory PMSM driver, the effectiveness of the proposed ECS-MPCC strategy is validated. The experimental results demonstrate a significant reduction of 79% in the total harmonic distortion of phase currents compared to the conventional FCS-MPCC approach. This improvement underscores the superiority of the ECS-MPCC in enhancing the performance of PMSM drives, thereby illustrating its potential for practical implementation in real-world applications.
A Current Differential Protection Scheme for Distribution Networks with Inverter-Interfaced Distributed Generators Considering Delay Behaviors of Sequence Component Extractors
Authors: Wang Gang , Huang Min , Bai Hao , Li Jie , Yao Ruotian , Wang Haoming , Li Chengxin
Published: November 2023

The high-level proliferation of inverter-interfaced distributed generators (IIDGs) in modern distribution networks (DNs) has changed system topologies and fault current signatures, which compromises the protective relays in DNs. Investigating IIDG fault behaviors-based protection scheme will benefit the grid’s safety and stability. This paper proposes a novel current differential protection (CDP) scheme that considers the delay behaviors of positive- and negative-sequence component extractors for IIDGs in DNs. A frequency-domain analytical model of the fault current for a grid-connected IIDG with the PQ control strategy and a low-voltage ride-through (LVRT) capability is investigated. The dynamic behavior of the IIDGs considering the sequence-component extractor based on the Pade approximation is presented, where the T/4 delay extractor of the IIDGs causes a two-stage behavior in the fault transient process. It is found that a 5 ms error between the measured and actual values after the fault will affect the transient characteristics of the IIDGs. The transient current generated by the IIDGs during grid faults contains a large number of low-order harmonic components within the range of 0–200 Hz, which is significantly different to the current provided by the power grid. Therefore, the proposed CDP scheme uses protective relays at both terminals to obtain the required transient electric quantity using the Prony method. By constructing the frequency-characteristics ratio (FCR) and the exchanging FCR between two terminal relays, the developed protection criteria are implemented. The accuracy of the fault analysis method, whose maximum computational error is below 0.1%, and the feasibility of the proposed protection scheme are demonstrated by using a 10 kV DN in a PSCAD/EMTDC simulation, which can be applied to various fault conditions and traditional DNs without IIDGs.
A Deep-Learning-Based Multimodal Data Fusion Framework for Urban Region Function Recognition
Authors: Yu Mingyang , Xu Haiqing , Zhou Fangliang , Xu Shuai , Yin Hongling
Published: November 2023

Accurate and efficient classification maps of urban functional zones (UFZs) are crucial to urban planning, management, and decision making. Due to the complex socioeconomic UFZ properties, it is increasingly challenging to identify urban functional zones by using remote-sensing images (RSIs) alone. Point-of-interest (POI) data and remote-sensing image data play important roles in UFZ extraction. However, many existing methods only use a single type of data or simply combine the two, failing to take full advantage of the complementary advantages between them. Therefore, we designed a deep-learning framework that integrates the above two types of data to identify urban functional areas. In the first part of the complementary feature-learning and fusion module, we use a convolutional neural network (CNN) to extract visual features and social features. Specifically, we extract visual features from RSI data, while POI data are converted into a distance heatmap tensor that is input into the CNN with gated attention mechanisms to extract social features. Then, we use a feature fusion module (FFM) with adaptive weights to fuse the two types of features. The second part is the spatial-relationship-modeling module. We designed a new spatial-relationship-learning network based on a vision transformer model with long- and short-distance attention, which can simultaneously learn the global and local spatial relationships of the urban functional zones. Finally, a feature aggregation module (FGM) utilizes the two spatial relationships efficiently. The experimental results show that the proposed model can fully extract visual features, social features, and spatial relationship features from RSIs and POIs for more accurate UFZ recognition.
Quick Estimation Model for Mapping Earthquake Impacts in Bogotá, Colombia
Authors: Miura Hiroyuki , Matsuoka Masashi , Reyes Juan C. , Pulido Nelson , Hashimoto Mitsufumi , Riaño Andrea C. , Hurtado Alvaro , Rincon Raul , García Helber , Lozano Carlos
Published: November 2023

Early disaster responses in damaged areas after a large earthquake are indispensable for stakeholders to assess and grasp the impacts such as building and infrastructure damage and disrupted community functionality as soon as possible. This study introduces a quick estimation model for mapping seismic intensities and building losses in Bogotá, the capital city of Colombia. The model uses ground motion records in the seismic network, soil maps of average shear-wave velocity in the upper 30 m (Vs30) with site amplifications, building inventory, and vulnerability functions for all building types. The spatial distribution of ground motion intensities, including spectral accelerations, was estimated by interpolating the observed seismic intensities with the Vs30-based site amplifications. The losses (repair cost) for all the buildings were evaluated by integrating the estimated spectral accelerations, the building inventory, and the vulnerability functions. The spatial distributions of seismic intensities and building losses can be computed within a few minutes immediately after triggering earthquake motions in the seismic network. The proposed model demonstrates evaluations of the impacts for the Mw6.0 earthquake that occurred on December 2019 and an earthquake scenario with Mw7.0 from an active fault near the Bogotá region.
Assessing Regional Development Balance Based on Zipf’s Law: The Case of Chinese Urban Agglomerations
Authors: Kong Liang , Wu Qinglin , Deng Jie , Bai Leichao , Chen Zhongsheng , Du Zhong , Luo Mingliang
Published: November 2023

With the deepening of urbanization in China, the coordinated development of cities in different regions is an important part of the sustainable development of the country, and the reasonable quantification of the unbalanced development of cities in different regions is an important issue facing the society nowadays. Previous studies usually use population data to analyze the power-law distribution law to quantify the imbalance of urban development in different regions, but China’s population data span a large number of years and numerous division criteria, and the results obtained from different population data are widely disparate and have obvious limitations. The paper starts from a fractal perspective and utilizes OpenStreetMap (OSM) data to extract national road intersections from 2015 to 2022, calculates critical distance thresholds for eight years using urban expansion curves, generates urban agglomerations in China, and quantifies the imbalance of urban development in different regions by calculating the urban agglomeration power-law index. The results indicate that (1) the critical distance threshold of urban expansion curves exhibits a slight overall increase and stabilizes within the range of 120–130 m, (2) the number of urban agglomerations in China has been increasing significantly year by year, but the power-law index has been decreasing from 1.49 in 2015 to 1.36 in 2022, and (3) the number of urban agglomerations and the power–law index of the Beijing–Tianjin–Hebei, Yangtze River Delta, Pearl River Delta, and Chengdu–Chongqing regions, which is consistent with the national scale trend, indicates that the scale distribution of urban agglomerations in China at this stage does not conform to Zipf’s law, and there is a certain Matthew effect among cities in different geographic areas with a large unevenness. The results of the study can provide new ideas for assessing the coordinated development of cities in different regions. It compensates for the instability of population and economic data in traditional studies.
Efficient Construction of Voxel Models for Ore Bodies Using an Improved Winding Number Algorithm and CUDA Parallel Computing
Authors: Liu Lei , Sun Yong , Ji Min , Wang Huimeng , Liu Jiantao
Published: November 2023

The three-dimensional (3D) geological voxel model is essential for numerical simulation and resource calculation. However, it can be challenging due to the point in polygon test in 3D voxel modeling. The commonly used Winding number algorithm requires the manual setting of observation points and uses their relative positions to restrict the positive and negative solid angles. Therefore, we proposed the Winding number with triangle network coding (WNTC) algorithm and applied it to automatically construct a 3D voxel model of the ore body. The proposed WNTC algorithm encodes the stratum model by using the Delaunay triangulation network to constrain the index order of each vertex of the triangular plane unit. GPU parallel computing was used to optimize its computational speed. Our results demonstrated that the WNTC algorithm can greatly improve the efficiency and automation of 3D ore body modeling. Compared to the Ray casting method, it can compensate for a voxel loss of about 0.7%. We found the GPU to be 99.96% faster than the CPU, significantly improving voxel model construction speed. Additionally, this method is less affected by the complexity of the stratum model. Our study has substantial potential for similar work in 3D geological modeling and other relevant fields.
Micro-Structural and Biomechanical Evaluation of Bioresorbable and Conventional Bone Cements for Augmentation of the Proximal Femoral Nail
Authors: Linhart Christoph , Kistler Manuel , Saller Maximilian , Greiner Axel , Lampert Christopher , Kassube Matthias , Becker Christopher A. , Böcker Wolfgang , Ehrnthaller Christian
Published: November 2023

Osteoporotic proximal femur fractures are on the rise due to demographic change. The most dominant surgical treatment option for per/subtrochanteric fractures is cephalomedullary nailing. As it has been shown to increase primary stability, cement augmentation has become increasingly popular in the treatment of osteoporotic per/subtrochanteric femur fractures. The ultimate goal is to achieve stable osteosynthesis, allowing for rapid full weight-bearing to reduce possible postoperative complications. In recent years, bioresorbable bone cements have been developed and are now mainly used to fill bone voids. The aim of this study was to evaluate the biomechanical stability as well as the micro-structural behaviour of bioresorbable bone cements compared to conventional polymethylmethacrylate (PMMA)-cements in a subtrochanteric femur fracture model. Biomechanical as well as micro-computed tomography morphology analysis revealed no significant differences in both bone cements, as they showed equal mechanical stability and tight interdigitation into the spongious bone of the femoral head. Given the positive risk/benefit ratio for bioresorbable bone cements, their utilisation should be evaluated in future clinical studies, making them a promising alternative to PMMA-bone cements.
Effects of a Gait Training Program on Spinal Cord Injury Patients: A Single-Group Prospective Cohort Study
Authors: Echemendía del Valle Alexander , Bender del Busto Juan Enrique , Sentmanat Belisón Armando , Cuenca-Zaldívar Juan Nicolás , Martínez-Pozas Oliver , Martínez-Lozano Pedro , Fernández-Carnero Samuel , Valcárcel Izquierdo Norberto , Sánchez-Romero Eleuterio A.
Published: November 2023

Introduction: Spinal cord injury is defined as the pathological process produced by any etiology affecting the spinal cord, which may alter motor, sensory, and/or autonomic function below the level of the lesion. The complexity of the neurological deficit and, therefore, the resulting clinical picture depends on the level of the lesion, the extent, and the affectation of the white or gray substance. This injury can totally or partially affect the ability to walk, and its highest priority with respect to mobility is to restore the ability to walk. All of which make the improvement of the methods used in their rehabilitation a top priority for health systems. Objective: The main objective of this study was to evaluate the effect of a gait training program for patients with spinal cord injuries. Material and Methods: A single-group, prospective cohort study was developed following the Strengthening the Reporting of Observational Studies in Epidemiology Guidelines (STROBE) at the International Center for Neurological Restoration of Siboney Playa (Havana, Cuba) from May 2020 to July 2021 with a sample of 30 patients by accidental or deliberate non-probabilistic sampling that met the expected inclusion criteria, who underwent a physical rehabilitation program for 8 weeks of work. Results: Statistically significant changes were observed in the overall course, by sex, by topographic level of lesion, and by functional class. Conclusions: The gait training program used produced significant changes in thoracic spinal cord injured patients regardless of the level of injury, sex, or functional class of the patient.
Beyond Conventional Operations: Embracing the Era of Contemporary Minimally Invasive Cardiac Surgery
Authors: Ilcheva Lilly , Risteski Petar , Tudorache Igor , Häussler Achim , Papadopoulos Nestoras , Odavic Dragan , Rodriguez Cetina Biefer Hector , Dzemali Omer
Published: November 2023

Over the past two decades, minimally invasive cardiac surgery (MICS) has gained a significant place due to the emergence of innovative tools and improvements in surgical techniques, offering comparable efficacy and safety to traditional surgical methods. This review provides an overview of the history of MICS, its current state, and its prospects and highlights its advantages and limitations. Additionally, we highlight the growing trends and potential pathways for the expansion of MICS, underscoring the crucial role of technological advancements in shaping the future of this field. Recognizing the challenges, we strive to pave the way for further breakthroughs in minimally invasive cardiac procedures.
Lung Ultrasound: A Useful Prognostic Tool in the Management of Bronchiolitis in the Emergency Department
Authors: Hernández-Villarroel Aiza C. , Ruiz-García Alicia , Manzanaro Carlos , Echevarría-Zubero Regina , Bote-Gascón Patricia , Gonzalez-Bertolin Isabel , Sainz Talía , Calvo Cristina , Bueno-Campaña Mercedes
Published: November 2023

Lung ultrasound, a non-invasive bedside technique for assessing paediatric patients with acute respiratory diseases, is becoming increasingly widespread. The aim of this prospective, observational cohort study was to evaluate the effectiveness of a clinical ultrasound score in assessing infants with acute bronchiolitis in the emergency department and its ability to accurately identify patients at a higher risk of clinical deterioration. Infants under 6 months of age with clinical symptoms compatible with acute bronchiolitis were enrolled and underwent clinical and lung ultrasound evaluations. The study included 50 patients, the median age of which was 2.2 months (IQR: 1–5), and the primary outcome was respiratory support. Infants requiring invasive or non-invasive ventilation showed higher scores (5 points [IQR: 3.5–5.5] vs. 2.5 [IQR: 1.5–4]). The outcome had an AUC of 0.85 (95%CI: 0.7–0.98), with a sensitivity of 87%, specificity of 64%, and negative predictive value of 96.4% for a score <3.5 points. Children who scored ≥3.5 points were more likely to require respiratory support within the next 24 h (estimated event-free survival of 82.9% compared to 100%, log-rank test p-value = 0.02). The results suggest that integrating lung ultrasound findings into clinical scores when evaluating infants with acute bronchiolitis could be a promising tool for improving prognosis.
Novel Echocardiographic Measurements of Right Ventricular–Pulmonary Artery Coupling in Predicting the Prognosis of Precapillary Pulmonary Hypertension
Authors: Topyła-Putowska Weronika , Tomaszewski Michał , Wojtkowska Agnieszka , Wysokiński Andrzej
Published: November 2023

Background: Currently, there are many parameters with proven prognostic significance in pulmonary hypertension (PH). Recently, the parameters defining right ventricular–pulmonary artery coupling (RVPAC) have gained clinical importance. In our study, we investigated the prognostic potential of previously known single echocardiographic parameters and new parameters reflecting RVPAC in patients with precapillary PH. Objective: Our study aimed to evaluate the prognostic value of selected echocardiographic parameters and the neutrophil–lymphocyte ratio (NLR) in adults with precapillary PH. Methods: This study included 39 patients (74% women; average age, 63 years) with precapillary PH: pulmonary arterial hypertension (PAH) and chronic thromboembolic PH (CTEPH). The mean follow-up period was 16.6 ± 13.3 months. Twelve patients (31%) died during the observation time. We measured several echocardiographic parameters, which reflect right ventricular function, pulmonary hemodynamics, and RVPAC. To assess disease progression and the patient’s functional capacity, the World Health Organization functional class (WHO FC) was determined. The patient’s physical capacity was also evaluated using the 6 min walk test (6MWT). The analysis included values of the N-terminal prohormone brain natriuretic peptide (NT-proBNP) and NLR. Results: TAPSE × AcT and TAPSE/sPAP were shown to statistically and significantly correlate with PH predictors, including WHO-FC, 6MWT, and NT-proBNP. Univariate Cox proportional hazards regression analysis revealed that AcT, TAPSE, mPAP, TAPSE/sPAP, RAP, TRPG/AcT, TAPSE × AcT, and NLRs are good predictors of mortality in patients with PH. In addition, the ROC curve analysis showed that TAPSE × AcT is a better predictor of PH-related deaths than TAPSE/sPAP and TAPSE alone. In our study, patients with TAPSE × AcT values < 126.36 had shorter survival times (sensitivity = 72.7%; specificity = 80.0%). Conclusions: TAPSE × AcT is a novel, promising, and practicable echocardiographic parameter reflecting RVPAC, which is comparable to TAPSE/sPAP. Moreover, TAPSE × AcT can be a useful parameter in assessing the severity and prognosis of patients with precapillary PH.
Characterization of Ecosystem Services and Their Trade-Off and Synergistic Relationships under Different Land-Use Scenarios on the Loess Plateau
Authors: Xiong Maoqiu , Li Fujie , Liu Xiaohuang , Liu Jiufen , Luo Xinping , Xing Liyuan , Wang Ran , Li Hongyu , Guo Fuyin
Published: November 2023

The Loess Plateau is one of the most fragile ecological regions in China due to its shortage of water resources and severe soil erosion. The rapid development of urbanization and the implementation of the project of returning farmland to forest (grass) have caused the ecological environment of the region to be strongly impacted by human activities. It is necessary to investigate the spatial and temporal evolution characteristics of ecosystem services and trade-off/synergy relationships on the Loess Plateau, to achieve scientific management of ecological services and sustainable development of the region. This study quantitatively assesses three ecosystem services of water yield (WY), carbon storage (CS), and soil conservation (SC) on the Loess Plateau under different scenarios from 2000 to 2030 by using the InVEST and PLUS models. Further, the trade-off and synergistic relationships among the ecosystem services have been investigated by Spearman correlation analysis. The results showed that the land-use differences are more obvious under different policy scenarios, with a sharp expansion of constructed land, a gradual increase of forest land, and a continuous decrease of arable land in the Loess Plateau from 2000 to 2020; the water yield and soil conservation increase from 2000 to 2020, and the carbon storage shows an opposite trend. The soil conservation and carbon storage scenarios are the best under the ecological conservation scenario in 2030, while the water yield service is the best under the economic development scenario. There is a synergistic relationship between CS and SC, while there is a trade-off relationship between CS and WY. In addition, there are significant trade-off effects between SC and WY. These results can support guiding land-use management and ecological restoration.
Spatiotemporal Evolution and Influencing Factors of Soybean Production in Heilongjiang Province, China
Authors: Wang Tianli , Ma Yanji , Luo Siqi
Published: November 2023

Heilongjiang Province, as the largest production and supply base for high-quality soybeans in China, plays a vital role in optimizing the layout of soybean production and promoting the revitalization of the soybean industry. Soybean yield is used as a key indicator of soybean production. This study integrated soybean yield data from agricultural reclamation systems and local authorities. A variety of statistical analysis methods, such as barycenter analysis, the Mann–Kendall test, the space–time cube, and grey relational analysis, were used to research the spatiotemporal evolution and influencing factors of soybean production in Heilongjiang Province from 2011 to 2021. This paper revealed the spatiotemporal evolution mechanism and explored the reasons for the differences in the effects of influencing factors. The results were as follows. (1) During the period between 2011 and 2021, the center of gravity of county-level soybean yield in Heilongjiang Province moved towards the northwest over a distance of 16.82 km. The soybean yield in the province experienced a mutation in approximately 2018, from a downward trend to an upward trend. (2) The spatiotemporal hot spots of county-level soybean yield in Heilongjiang Province were concentrated along the line from Hailun to Aihui. The types of hot spots included consecutive hot spots, intensifying hot spots, sporadic hot spots, and new hot spots. (3) The spatiotemporal agglomeration patterns of county-level soybean yield in Heilongjiang Province included only high-high clusters, only low-low clusters, only high-low outliers and multiple types. (4) The temporal changes in soybean yield in various counties of Heilongjiang Province had obvious regional characteristics. (5) Socioeconomic factors had aftereffects on soybean planting decisions. (6) Sunlight hours, the price ratio of local soybeans to local maize, average temperature, the number of soybean patents, the price ratio of imported soybeans to local soybeans, soybean cultivation income, local soybean prices, and the number of newly established soybean enterprises were primary influencing factors. Precipitation and soybean import volume were secondary influencing factors. The income difference between maize and soybeans, crops-hitting disaster area, and maize yield were general influencing factors. This study aims to offer new pathways for alleviating the structural contradiction between soybean supply and demand and to provide a reference for the formulation of national soybean industry policies and food security strategies.
Incidence Rates and Risk Ratios of Normal Tension Glaucoma in Patients with Chronic Rhinosinusitis: A Population-Based Longitudinal Follow-Up Study
Authors: Kim Dong-Kyu , Yu Hyunjae
Published: November 2023

Several studies have investigated the association between chronic rhinosinusitis (CRS) and ophthalmological complications. However, it remains uncertain whether CRS is independently associated with the development of normal tension glaucoma (NTG). Therefore, this retrospective cohort study aimed to investigate the prospective association between CRS and the increased incidence and risk of NTG using a representative population-based dataset. The selection of both the CRS and comparison groups was meticulously conducted through the propensity scoring method. The incidence and risk ratios of NTG were measured using person-years at risk and a weighted Cox proportional hazards model. We enrolled 30,284 individuals without CRS (comparison group) and 15,142 individuals with CRS. The NTG incidence rates were 1.19 and 0.81 in the CRS and comparison groups, respectively. The CRS group showed a significantly increased risk of subsequent development for NTG (adjusted hazard ratio = 1.41, 95% confidence interval = 1.16–1.72), regardless of the CRS subtype. Additionally, the risk of developing NTG was relatively higher in the first 2 years after CRS diagnosis. Moreover, a subgroup analysis revealed a higher risk of NTG in elderly female individuals with CRS. The present findings underscore the importance of monitoring and managing NTG risk in individuals with CRS, especially in elderly female patients.
Influence of Heat Treatment on Microstructure and Mechanical Properties of Direct-Quenched Fe-0.06C-0.2Si-2.0Mn Steel
Authors: Shin Seung-Hyeok , Oh Dong-Kyu , Hwang Byoungchul
Published: November 2023

In this study, the effect of subsequent heat treatment applied to high-strength low-alloy steel (HSLA) on the structure–property relationships was investigated. Tempering and intercritical annealing processes are introduced to elucidate the influence of subsequent heat treatment on mechanical properties of direct-quenched Fe-0.06C-0.2Si-2.0Mn steel from a microstructural perspective. The tempering process results in a typical tempered martensite with uniformly dispersed cementite, whereas the intercritical annealing process forms a dual-phase microstructure composed of soft ferrite and hard martensite for the direct-quenched steel. In the intercritical annealed steel, a number of mobile dislocations at the interphase (martensite/ferrite) boundary significantly decrease the yield strength, and the large difference in strength between ferrite and martensite enhances work hardening. Charpy V-notch impact test results indicate that the tempering and intercritical annealing processes improved the absorbed energy by more than 100 J compared to the direct-quenched steel at room temperature, and at −50 °C, the intercritically annealed steel exhibited the highest absorbed energy of approximately 140 J. Additionally, the high fraction of high-angle grain boundaries and fine grains of the intercritically annealed steel increase the resistance to cleavage crack propagation, thereby reducing the ductile-to-brittle transition temperature.
The Influence of Carbon Nanotubes on the Physical and Chemical Properties of Nanocomposites Based on Unsaturated Polyester Resin
Authors: Pączkowski Przemysław , Sigareva Nadiia V. , Gorelov Borys M. , Terets Mariia I. , Sementsov Yurii I. , Kartel Mykola T. , Gawdzik Barbara
Published: November 2023

The new actual scientific direction is in the development of different nanocomposites and the study of their medical–biological, physicochemical, and physicomechanical properties. One way to expand the functionality of nanocomposites and nanomaterials is to introduce carbon nanostructures into the polymer matrix. This study presents the properties of unsaturated polyester resins (Estromal, LERG S.A.) based on PET recyclate with multi-walled carbon nanotubes (MWCNTs): their mechanical and thermomechanical characteristics, resistance to ultraviolet radiation (UV-vis), and chemical resistance properties. The properties of the obtained materials were characterized using physical–chemical research methods. The changes in the properties of the composites for MWCNT content of 0.1, 0.3, and 0.5 wt % were determined. The results showed positive influences on the thermomechanical and mechanical properties of nanocomposites without significant deterioration of their gloss. Too much CNT added to the resin leads to heterogeneity of the composite structure.
Antioxidant and Antitumor Potential of Micropropagated Balkan Endemic Sideritis scardica Griseb
Authors: Tasheva Krasimira , Georgieva Ani , Denev Petko , Dimitrova Lyudmila , Dimitrova Margarita , Misheva Svetlana , Petkova-Kirova Polina , Lazarova Maria , Petrova Maria
Published: November 2023

Sideritis scardica Griseb. is a critically endangered Balkan endemic species, known for its antioxidant, neuroprotective and anti-inflammatory properties. The aim of the present study was to detail an efficient protocol for the micropropagation of S. scardica. In vitro cultures were initiated from the shoot tips of 40 days-old in vivo seedlings and the effects of different plant growth regulator treatments were examined. A Murashige and Skoog nutrient medium (MS) containing 1 mg/L zeatin and 0.1 mg/L indole-3-acetic acid (IAA) proved to be the most efficient for shoot multiplication as it produced quality, vigorous shoots with a mean number of six shoots per explant. For the first time, the antioxidant and antitumor activities of extracts from in vitro-obtained plants were evaluated. In vitro cultivated plants grown in the field revealed a higher total polyphenol content (3929.1 ± 112.2 mg GAE/100 g vs. 3563.5 ± 52.8 mg GAE/100 g) and higher ORAC antioxidant activity (1211.6 ± 27.3 µmol TE/g vs. 939.9 ± 52.4 µmol TE/g) than in situ cultivated plants. A comparison of the antitumor activities of extracts from in vitro propagated shoots, field-grown in vitro-obtained plants and in situ plants on HeLa (cervical adenocarcinoma), HT-29 (colorectal adenocarcinoma) and MCF-7 (breast cancer) human cancer cell lines showed that in vitro propagated shoots had a significant concentration-dependent cytotoxic effect on the cervical adenocarcinoma cell line HeLa, while the field-grown in vitro-obtained and in situ-collected samples induced the highest reduction in the viability of the mammary carcinoma cell line MCF-7. In both cases, the cells of the control non-tumor cell line, BALB/3T3, were significantly less affected. The results showed that the in vitro multiplication protocol ensured the obtainment of numerous plants with antioxidant and antitumor potential.
Cannabis Virome Reconstruction and Antiviral RNAi Characterization through Small RNA Sequencing
Authors: Miotti Niccolo’ , Sukhikh Natalia , Laboureau Nathalie , Casati Paola , Pooggin Mikhail M.
Published: November 2023

Viral infections pose an emerging threat to hemp (Cannabis sativa) cultivation. We used Illumina small (s)RNA sequencing for virome reconstruction and characterization of antiviral RNA interference (RNAi) in monoecious and dioecious hemp varieties, which exhibited different virus-like symptoms. Through de novo and reference-based sRNA assembly, we identified and reconstructed Cannabis cryptic virus (family Partitiviridae), Cannabis sativa mitovirus 1 (Mitoviridae) and Grapevine line pattern virus (Bromoviridae) as well as a novel virus tentatively classified into Partitiviridae. Members of both Partitiviridae and Bromoviridae were targeted by antiviral RNAi, generating 21 nt and, less abundant, 22 nt sRNAs from both strands of the entire virus genome, suggesting the involvement of Dicer-like (DCL) 4 and DCL2 in viral sRNA biogenesis, respectively. Mitovirus sRNAs represented predominantly the positive-sense strand and had a wider size range, with the 21 nt class being most abundant on both strands. For all viruses, 21 and 22 nt sRNAs had predominantly 5′-terminal uridine or cytosine, suggesting their binding to antiviral Argonaute (AGO) 1 and AGO5, respectively. As no clear association of any virus with symptoms was observed, further studies should clarify if these viruses individually or in combination can cause hemp diseases.
Surgical Staplers in Laparoscopic Colectomy: A New Innovative Flexible Design Perspective
Authors: Khanzode Dhruva , Jha Ranjan , Thomieres Alexandra , Duchalais Emilie , Chablat Damien
Published: November 2023

This article describes the development of a flexible surgical stapler mechanism, which serves as a fundamental tool for laparoscopic rectal cancer surgery, addressing the challenges posed by difficult types of accessibility using conventional instruments. The design of this mechanism involves the incorporation of a stacked tensegrity structure, in which a flexible beam serves as the central spine. To assess the stapler’s range of operation, an analysis of the workspace was conducted by examining collaborative Computed Tomography (CT) scan data obtained from different perspectives (Axial, Coronal, and Sagittal planes) at various intervals. By synthesizing kinematic equations, Hooke’s law was employed, taking into account rotational springs and bending moments. This allowed for precise control of the mechanism’s movements during surgical procedures in the rectal region. Additionally, the study examined the singularities and simulations of the tensegrity mechanism, considering the influential eyelet friction parameter. Notably, the research revealed that this friction parameter can alter the mechanism’s curvature, underscoring the importance of accurate analysis. To establish a correlation between the virtual and physical models, a preliminary design was presented, facilitating the identification of the friction parameter.
How the Biophysical Paradigm Impedes the Scientific Advancement of Ecological Economics: A Transdisciplinary Analysis
Authors: Makriyannis Christos
Published: November 2023

Ecological economics (EE), which typically conceptualizes the economy as a biophysical entity that grows into a finite ecosystem, was poised to become “economics as a life science”, or the science of sustainability, and thus an alternative to mainstream economics. However, while there is consensus among researchers that it has failed to become so, there is consensus neither on the underlying causes of this failing, nor on what exactly the heterodox alternative is. For instance, biophysical economists tend to see the biophysical paradigm (BP) as the key to scientific advancement, while institutional economists tend to see it as an impediment. The current research addresses this lack of consensus. To set the foundations for an in-depth and necessarily transdisciplinary analysis, this article first reiterates and elaborates on a fact that typically eludes modern EE: EE’s scientific roots lie not in the BP, but in the analogy of the economy-as-an-organism. This article then formalizes the relationship between this analogy and the BP, to analyze it systematically using cognitive science’s structure-mapping theory, which explains the role of human analogical processing in learning and the advancement of science. The findings suggest that: (1) As a scientific model, the BP is merely a partially articulated form of the economy-as-an-organism analogy, and thus suffers from a type of model specification bias. (2) This bias appears to manifest in EE as a “black box” economy, relationally operationally analogous to a life science studying an organism as if it had no organs. (3) These findings are consistent with those of a recent publication that debates the role of the BP, despite employing very different assumptions and perspectives—thus corroborating the current article’s methods and findings. These findings have an overarching implication: EE may advance scientifically by identifying the economy analogs of fundamental omitted organs, thus facilitating the transfer of causal knowledge from biology to economics to further “economics as a life science” or “the science of sustainability”.
Analisis Kualitas Layanan Website Sistem Informasi Akademik STIKBA Jambi terhadap Kepuasan Pengguna menggunakan Metode Webqual 4.0
Authors: Zahri Caroline , Sharipuddin  , Hartiwi Yessi
Published: November 2023

Sekolah Tinggi Ilmu Kesehatan Baiturrahim (STIKBA) JAMBI merupakan sebuah perguruan tinggi swasta di JAMBI. Pada STIKBA, Website SIAKAD ini digunakan untuk menangani proses pengelolaan data akademik dan data terkait lainnya, sehingga seluruh proses kegiatan akademik dapat terkelola menjadi informasi yang bermanfaat dalam pengelolaan manajemen perguruan tinggi, pengambilan keputusan serta pelaporan di lingkungan perguruan tinggi. Namun, kenyataannya website  tersebut masih belum bermanfaat dan digunakan dengan baik khususnya untuk mahasiswa STIKBA JAMBI sebagai sarana informasi. Dan ada beberapa kekurangan dan kendala pada website tersebut seperti hanya dapat mengakses materi untuk di download tetapi belum maksimalnya  pemanfaatkan menu virtual class (pengumpulan tugas kuliah, diskusi online, agenda pribadi) , serta informasi yang kurang pembaharuan, kurang tepat waktu dan tampilan yang kurang menarik. Maka dari itu tujuan penelitian ini adalah untuk mengetahui faktor-faktor apa saja yang mempengaruhi tingkat kepuasan pengguna dalam menggunakan website SIAKAD. Metode pengumpulan data melalui kuesioner secara online yang melibatkan 100 responden dari Mahasiswa STIKBA JAMBI. Perhitungan data hasil kuesioner diolah dan dianalisis menggunakan SPSS 26. Berdasarkan hasil penelitian dan analisis yang telah dilakukan variabel Usability memiliki pengaruh sebesar 3.326 terhadap kepuasan pengguna, lalu variabel kualitas informasi (Information Quality) memiliki pengaruh sebesar 2.396 terhadap kepuasan pengguna dan variabel kualitas layanan (Interaction Quality) memiliki pengaruh sebesar 1.987 terhadap kepuasan pengguna.
Perancangan Sistem Informasi Parkir Di Universitas Dinamika Bangsa Berbasis Web
Authors: Prayitno Anton , Syach Putra Bima , Arrela Ikraam
Published: November 2023

Universitas Dinamika Bangsa (UNAMA) merupakan salah satu perguruan tinggi di Kota Jambi.  Proses informasi parkir pada UNAMA saat ini masih dilakukan dengan cara manual. Belum adanya sistem informasi tentunya tidak bisa mengimbangi kebutuhan akan penyajian informasi yang cepat, tepat dan akurat. Selain itu, pengelolaan data dengan cara manual dinilai kurang efektif untuk penyediaan laporan dan informasi.  Berdasarkan permasalahan tersebut dirancang  sistem informasi parkir berbasis website untuk memudahkan dalam mengelola data informasi parkir seperti mengontrol kendaraan masuk atau keluar dan memudahkan petugas mengetahui jumlah kendaraan yang diawasi secara komputerisasi (online).  Dalam merancang sistem ini digunakan pendekatan berorientasi objek seperti use case, activity diagram dan class diagram. Metode pengumpulan data yang digunakan yaitu observasi dan wawancara. Metode pengembangan sistem yang digunakan dalam penelitian ini adalah metode air terjun (waterfall). Dengan adanya sistem parkir ini diharapkan dapat membantu kinerja pihak kampus untuk pengolahan data parkir dan pembuatan laporan parkir secara efisien.
Perancangan Sistem Informasi Pengelolaan Biaya Program Pendidikan Pada Gentala Hospitality School Jambi
Authors: Rianti Agustini Silvia
Published: November 2023

Gentala Hospitality School merupakan suatu lembaga pendidikan-pelatihan profesi 1 tahun, program pendidikan perhotelan, pariwisata dan kapal pesiar internasional. Di dalam lembaga pelatihan ini terdapat berbagai masalah yang dihadapi oleh Gentala Hospitality School, salah satunya dalam pengolahan terhadap data transaksi pembayaran SPP yang masih belum tersistematis dengan baik karena pencatatan masih dilakukan dengan cara manual. Proses pencatatan pembayaran siswa di catat di komputer dengan excel belum terintegrasi, dan staff kesulitan memberikan informasi ke siswa untuk segera membayar SPP karna tidak ada nya notifikasi pada excel untuk siswa yang belum atau telat membayar SPP. Sehingga pelayanan administrasi kepada siswa kurang maksimal. Karna sistem yang tidak terintegrasi membuat staff kesulitan membuat laporan sesuai kebutuhan. Berlandaskan permasalahan inilah, maka peneliti melakukan penelitian yang membuat sebuah perancangan sistem informasi pembayaran SPP pada Gentala Hospitality School.
PERANCANGAN E-COMMERCE PADA ALL YOU CAN BUY BOUTIQUE JAMBI
Authors: Anggi Wulandari Riza , Jasmir  , Aryani Lies
Published: November 2023

All You Can Buy Boutique Jambi merupakan salah satu usaha yang bergerak dibidang penjualan produk pakaian wanita dimana proses promosi dan penjualan masih menggunakan cara manual. Sehingga terjadi permasalahan yaitu sulitnya meningkatkan omzet penjualan dalam jumlah yang besar, kurangnya sarana promosi yang dapat dilakukan dengan biaya murah, dan kurangnya sarana pemberian informasi produk yang ditawarkan. Penelitian ini bertujuan merancang sistem e-commerce sebagai media promosi dan penjualan produk. Penelitian menggunakan bahasa pemograman PHP, database MySQL dan metode pengembangan sistem waterfall. Penelitian ini memiliki tahapan yaitu identifikasi masalah, studi literatur ,pengumpulan data, desain sistem, pengembangan sistem dan pembuatan laporan. Hasil dari penelitian ini mampu memberikan kemudahan pada All You Can Buy Boutique Jambi dalam promosi dengan biaya murah, memperluas wilayah promosi dan penjualan yang dapat meningkat tanpa harus menunggu pelanggan datang ke tempat
Perancangan Sistem Penilaian Kepuasan Masyarakat Pada Badan Kepegawaian dan Pengembangan Sumber Daya Manusia Daerah Kota Jambi
Authors: Pebrianto Feri
Published: November 2023

Kota Jambi merupakan suatu pelaksana pemerintahan yang memiliki tugas membantu walikota dalam urusan dibidang kepegawaian, pendidikan dan pelatihan. Selama ini proses pelayanan tamu telah menggunakan sebuah sistem pencatatan tamu, Namum belum adanya sebuah sistem sebagai pengukur kepuasan pelayanan sesuai indikator standar yang berlaku. Penilaian kepuasan kepada penerima layanan masih berupa distribusi lembaran kuisioner. Oleh karenanya, diperlukan sistem penilaian kepuasan masyarakat menggunakan bahasa pemograman PHP dan DBMS MySQL. Metode pengembangan sistem menggunakan waterfall dengan pendekatan sistem unified model language menggunakan model activity diagram, usecase diagram, dan class diagram. Sistem informasi ini menghasilkan output guna menampilkan data responden dan data nilai kepuasan masyarakat secara informatif dan terstruktur serta menampilkan data serta informasi yang cepat dan tepat laporan yang dibutuhkan sehingga mempermudah proses pelaporan pada Badan Kepegawaian dan Pengembangan Sumber Daya Manusia Daerah Kota Jambi.
MENUMBUHKAN JIWA ENTREPRENEUR UNTUK MENINGKATKAN PENDAPATAN PADA ANGGOTA RUMAH BACA JAKOSE MELALUI BISNIS MODEL CANVAS (BMC)
Authors: Fahdillah Yosi , Usmayanti Vivi , Saputra Muhammad Haris , Pangestu Mira Gustiana , Rahayu Nia
Published: November 2023

Pentingnya sumber daya terutama finansial, dalam organisasi sosial terutama ini yang dirasakan salah satu organisasi sosial yaitu rumah baca jakose (jambi kota seberang) yang mana dalam melakukan kegiatan harus ada dana yang harus dikeluarkan agar kegiatan berjalan dengan lancar. Oleh karena itu, dengan adanya pelatihan ini diharapkan para anggota rumah baca jakose bisa meningkatkan jiwa kewirausahaannya serta menuangkan serta menciptakan ide bisnisnya melalui business model canva, yang mana penggunannya yang related mudah, diharapkan para anggota rumah baca jakose sehingga bisnis yang mereka buat inilah yang akan jadi usaha yang memberikan pendapatan untuk operasi ataupun kegiatan social mereka nantinya yang dihasilkan melalui pelatihan “menumbuhkan jiwa entrepreneur untuk meningkatkan pendapatan pada anggota rumah baca jakose melalui Bisnis Model Canvas (BMC)”

Rumah Baca Jakose (jambi kota seberang) sendiri adalah organisasi sosial yang mana ingin Menjadikan rumah baca jakosa sebagai wadah penyaluran kreativitas sesuai bakat dan minat bagi anak-anak remaja dan masyarakat.Dan memiliki misi Menanamkan kebiasaan membaca dan belajar menjadi suatu hobi dan kegiatan yang menarik bagi anak-anak dalam mewujudkan kemampuan anak-anak yang memahami nilai moral kreatif dan cerdas sehingga dapat mengambil peran untuk masyarakat dan lingkungan

Metode yang dipakai dalam kegiatan ini adalah pelatihan dengan langkah-langkah sebagai berikut 1) Memberikan pemahaman mengenai entrepreneur, pada kelompok anggota jakose, 2) Simulasi teori, berupa praktek pemakaian Bisnis Model Canvas (BMC), 4) Monitoring selama 1 bulan, 5) Evaluasi.

Keywords: kewirausahaan, Bisnis Model Canvas, organisasi
Workshop ELLIB (Electronic Library) Sebagai Upaya Peningkatan Pelayanan Pustakawan SMA/SMK/MA Sederajat dan Minat Baca Pemustaka
Authors: Agustini Silvia Rianti , Meisak Despita , Hendri  , Irawan Beni
Published: November 2023

Kegiatan pengabdian kepada masyarakat ini dilaksanakan di ruang pertemuan Universitas Adiwangsa Jambi (UNAJA) yang mana pesertanya adalah pustakawan SMA/SMA/MA Sederajat Kota Jambi . Workshop ELLIB (Electronic Library) Sebagai Upaya Peningkatan Pelayanan Pustakwan SMA/SMK/MA Sederajat dan Minat Baca Pemustaka ini bertujuan untuk memberikan motivasi serta gambaran transformasi perpustakaan konvensional dan Electronic Library (Ellib), untuk meningkatkan minat baca pemustaka (Pembaca) dan pelayanan pustakawan SMA/SMK.MA di wilayah kota jambi, serta memberikan pelatihan penerapan Ellib (Electronic Library) dan menyusun sistem pengelolaan sumber daya perpustakaan yang baik dan benar pada lembaga pendidikan jenjang SMA di Wilayah Kota Jambi, sehingga Ellib (Electronic Library) dapat diterapkan di sekolah masing-masing.
EDUKASI DAN LITERASI KEMANAN DIGITAL FACEBOOK BAGI PELAJAR SMK YADIKA KOTA JAMBI
Authors: ISW Ibnu Sani Wijaya , Jasmir Jasmir , Winarto Eko Arip , Nugroho Agus , Sadikin Ali
Published: November 2023

Dalam lingkungan digital yang terus berkembang, segmen sekolah menjadi target potensial bagi serangan siber yang dapat mengancam privasi, integritas, dan keamanan informasi mereka. Oleh karena itu, pelatihan keamanan digital di sekolah sangatlah penting bertujuan untuk memberikan pemahaman mendalam tentang ancaman siber, termasuk serangan phishing, malware, peretasan, dan penipuan daring terutama didunia media sosial. Implementasi pelatihan keamanan digital di sekolah SMK menghadapi beberapa tantangan, seperti keterbatasan sumber daya, kebutuhan untuk memperbarui kurikulum secara berkala, dan kebutuhan untuk melibatkan tenaga ahli dalam keamanan digital. Namun, dengan komitmen yang kuat dari pihak sekolah dan dukungan dari pemerintah serta industri, tantangan ini dapat diatasi. Dalam kegiatan pengabdian ini dilakukan langkah edukasi dan pelatihan terkait keamanan digital di dalam media sosial terutama facebook. Dari hasil kegiatan ini terdiridari 32 orang siswa di SMK Yadika yang dimana tediri dari kelas X dan kelas XI. Dari hasil evaluasi yang dilakukan setelah pelatihan dan edukasi dilakukan peserta telah berhasil meyelesaikan pertanyan evaluasi yang dimana rata-rata nilai evaluasi adalah 80. Kegiatan pelatihan bagi masyarakat ini, dikhususkan untuk pelajar SMK Yadika Jambi dengan metode ceramah dan praktek langsung menggunakan fasilitas internet di sekolah tersebut. Kegiatan ini direncanakan 1 hari dengan durasi waktu 3 sampai 4 jam permateri. Melalui kegiatan ini, diharapkan keterampilan dan pemahaman peserta terkait bahaya dalam menggunakan media social dapat diketahui dan dapat menerapkan pengamananya dengan baik