{"results":[{"id":"ss_1cd3377d46c0ba5964bfc60ef2abc5454c93925c","title":"A production recovery plan in manufacturing supply chains for a high-demand item during COVID-19","authors":[{"name":"S. Paul"},{"name":"Priyabrata Chowdhury"}],"abstract":"PurposeA recent global pandemic, known as coronavirus disease 2019 (COVID-19), affects the manufacturing supply chains most significantly. This effect becomes more challenging for the manufacturers of high-demand and most essential items, such as toilet paper and hand sanitizer. In a pandemic situation, the demand of the essential products increases expressively; on the other hand, the supply of the raw materials decreases considerably with a constraint of production capacity. These dual disruptions impact the production process suddenly, and the process can collapse without immediate and necessary actions. To minimize the impacts of these dual disruptions, we aim to develop a recovery model for making a decision on the revised production plan.Design/methodology/approachIn this paper, the authors use a mathematical modeling approach to develop a production recovery model for a high-demand and essential item during the COVID-19. The authors also analyze the properties of the recovery plan, and optimize the recovery plan to maximize the profit in the recovery window.FindingsThe authors analyze the results using a numerical example. The result shows that the developed recovery model is capable of revising the production plan in the situations of both demand and supply disruptions, and improves the profit for the manufacturers. The authors also discuss the managerial implications, including the roles of digital technologies in the recovery process.Originality/valueThis model, which is a novel contribution to the literature, will help decision-makers of high-demand and essential items to make an accurate and prompt decision in designing the revised production plan to recover during a pandemic, like COVID-19.","source":"Semantic Scholar","year":2020,"language":"en","subjects":["Computer Science"],"doi":"10.1108/ijpdlm-04-2020-0127","url":"https://www.semanticscholar.org/paper/1cd3377d46c0ba5964bfc60ef2abc5454c93925c","is_open_access":true,"citations":382,"published_at":"","score":75.46000000000001},{"id":"ss_0ec0b8b8c23aa5ced6688ea451b144b15e182368","title":"Upscaling high-areal-capacity battery electrodes","authors":[{"name":"Jung-Hui Kim"},{"name":"Nag‐Young Kim"},{"name":"Zhengyu Ju"},{"name":"Young‐Kuk Hong"},{"name":"Kyu-Dong Kang"},{"name":"Jung-Hyun Pang"},{"name":"Seok-Ju Lee"},{"name":"Seong-Seok Chae"},{"name":"Moon-Soo Park"},{"name":"Je-Young Kim"},{"name":"Guihua Yu"},{"name":"Sang‐Young Lee"}],"abstract":"","source":"Semantic Scholar","year":2025,"language":"en","subjects":null,"doi":"10.1038/s41560-025-01720-0","url":"https://www.semanticscholar.org/paper/0ec0b8b8c23aa5ced6688ea451b144b15e182368","is_open_access":true,"citations":84,"published_at":"","score":71.52000000000001},{"id":"doaj_10.3390/jmmp10010018","title":"Investigations on the Effect of Fluid Jet to Wheel Speed Ratio on Specific Grinding Energy","authors":[{"name":"Ablie Njie"},{"name":"Tobias Hüsemann"},{"name":"Bernhard Karpuschewski"}],"abstract":"The use of metalworking fluid (MWF) in surface grinding is essential, but its supply contributes notably to the process energy demand. This study investigates the effect of the fluid jet to wheel speed ratio \u003ci\u003eq\u003c/i\u003e\u003csub\u003es\u003c/sub\u003e on specific grinding energy and associated CO\u003csub\u003e2\u003c/sub\u003e emissions. Experiments with grinding wheels of different grit sizes (F60–F120) were conducted at cutting speeds of 35 and 60 m/s. Critical specific material removal rates \u003ci\u003eQ\u003c/i\u003e’\u003csub\u003ew, crit\u003c/sub\u003e were determined by taper grinding, with the onset of grinding burn identified by Barkhausen noise analysis. Based on these values and the grinding wheel width, specific process energies \u003ci\u003ee\u003c/i\u003e\u003csub\u003etotal\u003c/sub\u003e were derived from grinding, pump, and machine base load. F120 wheels showed no systematic dependence of \u003ci\u003eQ\u003c/i\u003e’\u003csub\u003ew, crit\u003c/sub\u003e on \u003ci\u003eq\u003c/i\u003e\u003csub\u003es\u003c/sub\u003e, whereas for coarser F80 and F60 wheels, decreasing \u003ci\u003eq\u003c/i\u003e\u003csub\u003es\u003c/sub\u003e from 1.0 to 0.6 increased \u003ci\u003eQ\u003c/i\u003e’\u003csub\u003ew, crit\u003c/sub\u003e by 13–27% at 35 m/s and decreased it by 33–35% at 60 m/s. The most efficient process (F60, 35 m/s, \u003ci\u003eq\u003c/i\u003e\u003csub\u003es\u003c/sub\u003e = 0.6) required 152.8 J/mm\u003csup\u003e3\u003c/sup\u003e, the least efficient (F120, 60 m/s, \u003ci\u003eq\u003c/i\u003e\u003csub\u003es\u003c/sub\u003e = 0.8) 333.1 J/mm\u003csup\u003e3\u003c/sup\u003e. Because CO\u003csub\u003e2\u003c/sub\u003e emissions scale with \u003ci\u003ee\u003c/i\u003e\u003csub\u003etotal\u003c/sub\u003e, the relative differences in energy directly indicate relative differences in CO\u003csub\u003e2\u003c/sub\u003e output. An illustrative case study shows that adjusting \u003ci\u003eq\u003c/i\u003e\u003csub\u003es\u003c/sub\u003e alone (F80, 35 m/s) lowers annual emissions from 0.284 t to 0.206 t, a reduction of approximately 27%. These findings highlight the influence of \u003ci\u003eq\u003c/i\u003e\u003csub\u003es\u003c/sub\u003e on grinding efficiency and process energy demand.","source":"DOAJ","year":2026,"language":"","subjects":["Production capacity. Manufacturing capacity"],"doi":"10.3390/jmmp10010018","url":"https://www.mdpi.com/2504-4494/10/1/18","is_open_access":true,"published_at":"","score":70},{"id":"ss_6d48b0da8f505c60ecf3a1b41bdaab0d5b922177","title":"Global production capacity of seasonal and pandemic influenza vaccines in 2023","authors":[{"name":"Jessica Taaffe"},{"name":"Shoshanna Goldin"},{"name":"P. Lambach"},{"name":"E. Sparrow"}],"abstract":"Introduction Vaccination is a critical part of the response to an influenza pandemic. Future influenza pandemics will likely leverage existing production processes and manufacturing facilities for seasonal influenza to make pandemic vaccines. Therefore, pandemic influenza vaccine response is heavily dependent on seasonal influenza vaccine production capacity. Methods WHO monitors global vaccine production to inform pandemic preparedness by regularly surveying influenza vaccine manufacturers to estimate both seasonal and potential pandemic vaccine production capacity overall and by region, vaccine type, and manufacturing process. The last survey estimates were for 2019; here, we report updated estimates based on data from the 2023 survey and compare to estimates from previous surveys. Results Our analysis estimates that annual seasonal influenza vaccine production capacity has remained relatively stable since 2019 at 1.53 billion doses and pandemic vaccine capacity at 4.13 and 8.26 billion doses for moderate and best case scenarios, respectively. Over 80 % of seasonal and pandemic vaccine production capacity relies on embryonated eggs, and inactivated influenza virus vaccines comprise the majority of vaccine supply. There is influenza vaccine manufacturing capacity in all WHO regions, except for the African Region, though influenza vaccine production is concentrated in high and upper-middle income countries. The ability to achieve maximum production capacity could be hindered by access to eggs and other ancillary supplies. Conclusions While influenza vaccine production capacity has been sustained since 2019, significant gaps persist in its distribution, especially in low and lower-middle income countries, and most notably in the African region. This imbalance in production could result in unequal access to vaccines in the event of a pandemic. Strengthening local vaccine manufacturing, promoting seasonal vaccination programmes, and investing in research and development of next-generation influenza vaccines or improved production platforms are essential to improve pandemic preparedness, sustain the influenza vaccine market, and enable more robust local responses.","source":"Semantic Scholar","year":2025,"language":"en","subjects":["Medicine"],"doi":"10.1016/j.vaccine.2025.126839","url":"https://www.semanticscholar.org/paper/6d48b0da8f505c60ecf3a1b41bdaab0d5b922177","is_open_access":true,"citations":18,"published_at":"","score":69.53999999999999},{"id":"doaj_10.3390/jmmp9080261","title":"Effect of Ageing on a Novel Cobalt-Free Precipitation-Hardenable Martensitic Alloy Produced by SLM: Mechanical, Tribological and Corrosion Behaviour","authors":[{"name":"Inés Pérez-Gonzalo"},{"name":"Florentino Alvarez-Antolin"},{"name":"Alejandro González-Pociño"},{"name":"Luis Borja Peral-Martinez"}],"abstract":"This study investigates the mechanical, tribological, and electrochemical behaviour of a novel precipitation-hardenable martensitic alloy produced by selective laser melting (SLM). The alloy was specifically engineered with an optimised composition, free from cobalt and molybdenum, and featuring reduced nickel content (7 wt.%) and 8 wt.% chromium. It has been developed as a cost-effective and sustainable alternative to conventional maraging steels, while maintaining high mechanical strength and a refined microstructure tailored to the steep thermal gradients inherent to the SLM process. Several ageing heat treatments were assessed to evaluate their influence on microstructure, hardness, tensile strength, retained austenite content, dislocation density, as well as wear behaviour (pin-on-disc test) and corrosion resistance (polarisation curves in 3.5%NaCl). The results indicate that ageing at 540 °C for 2 h offers an optimal combination of hardness (550–560 HV), tensile strength (~1700 MPa), microstructural stability, and wear resistance, with a 90% improvement compared to the as-built condition. In contrast, ageing at 600 °C for 1 h enhances ductility and corrosion resistance (Rp = 462.2 kΩ; Ecorr = –111.8 mV), at the expense of a higher fraction of reverted austenite (~34%) and reduced hardness (450 HV). This study demonstrates that the mechanical, surface, and electrochemical performance of this novel SLM-produced alloy can be effectively tailored through controlled thermal treatments, offering promising opportunities for demanding applications requiring a customised balance of strength, durability, and corrosion behaviour.","source":"DOAJ","year":2025,"language":"","subjects":["Production capacity. Manufacturing capacity"],"doi":"10.3390/jmmp9080261","url":"https://www.mdpi.com/2504-4494/9/8/261","is_open_access":true,"published_at":"","score":69},{"id":"doaj_10.3390/jmmp9040134","title":"Influence of Infill Geometry and Density on the Mechanical Properties of 3D-Printed Polylactic Acid Structure","authors":[{"name":"Jozef Jaroslav Fekiač"},{"name":"Lucia Kakošová"},{"name":"Michal Krbata"},{"name":"Marcel Kohutiar"},{"name":"Maroš Eckert"},{"name":"Zbynek Studeny"},{"name":"Andrej Dubec"}],"abstract":"Additive manufacturing of polymer composites, also known as 3D printing, is one of the progressive technologies in material engineering. It enables the production of parts with complex geometries while optimizing material efficiency. Polylactide (PLA) is a widely used material in additive manufacturing due to its biodegradability and suitable mechanical properties. However, its brittleness and limited thermal stability require further modifications, such as modifying the filler structure or adding reinforcing materials. This paper focuses on analyzing the influence of different filler geometries and densities on the mechanical properties of PLA parts manufactured by the fused filament deposition (FFF) method. Three basic filler structures—cubic, gyroid and rectilinear—were investigated at different density levels from 20%, 40%, 60% and 80%. Experimental tests were performed according to ASTM D638 to determine the strength characteristics of the material. In addition to mechanical tests, dynamic mechanical analysis (DMA) and thermogravimetric analysis (TG) were performed to better understand the influence of the filling geometry on the thermal stability and viscoelastic behavior of the material. Experimental tests according to ASTM D638 showed that higher filling density improves mechanical properties. At 80% filling, the tensile strength reached 21.06 MPa (cubic), 20.53 MPa (gyroid) and 20.84 MPa (linear). The elastic modulus was highest with cubic filling (1414.19 MPa). The yield strength reached 15.59 MPa (cubic), 15.52 MPa (gyroid) and 14.30 MPa (linear).","source":"DOAJ","year":2025,"language":"","subjects":["Production capacity. Manufacturing capacity"],"doi":"10.3390/jmmp9040134","url":"https://www.mdpi.com/2504-4494/9/4/134","is_open_access":true,"published_at":"","score":69},{"id":"arxiv_2507.09873","title":"High-throughput bidirectional electro-optic transduction assessed with a practical quantum capacity","authors":[{"name":"M. D. Urmey"},{"name":"S. Dickson"},{"name":"K. Adachi"},{"name":"S. Mittal"},{"name":"L. G. Talamo"},{"name":"A. Kyle"},{"name":"N. E. Frattini"},{"name":"S. -X. Lin"},{"name":"K. W. Lehnert"},{"name":"C. A. Regal"}],"abstract":"A microwave-optical transducer of sufficiently low noise and high signal transfer rate would allow entanglement to be distributed between superconducting quantum processors reliably within the lifetimes of their quantum memories. To clarify the multifaceted performance required for such a task, we derive a broadband quantum channel capacity that bounds the maximum rate at which quantum information can be sent through realistic finite-bandwidth thermal-loss channels. This capacity serves as a comprehensive measure of transducer performance and provides insight into the relative importance of disparate metrics. We find that the broadband capacity depends on the throughput -- defined as the product of efficiency, bandwidth, and duty cycle -- and on the added noise. We present measurements of a membrane-based opto-electromechanical transducer with high throughput of 7 kHz and at an input-referred added noise of 3 photons in both upconversion and downconversion, demonstrating that bidirectional transducer capacities comparable to superconducting qubit decay rates are within reach. In downconversion, throughput of this magnitude at the few-photon noise level is unprecedented, marking an improvement of nearly four orders of magnitude over previous work.","source":"arXiv","year":2025,"language":"en","subjects":["quant-ph"],"url":"https://arxiv.org/abs/2507.09873","pdf_url":"https://arxiv.org/pdf/2507.09873","is_open_access":true,"published_at":"2025-07-14T03:05:26Z","score":69},{"id":"ss_a1625b7c0fd615bbdaf924a28e7558f645656482","title":"The capacity matching problem of the third-party shared manufacturing platform with capacity time windows and order splitting","authors":[{"name":"Xumei Zhang"},{"name":"Duanyang Cao"},{"name":"Bin Dan"},{"name":"Jianfeng Rui"},{"name":"Shengming Zhang"}],"abstract":"The development of sharing economy and new information technologies has promoted the emergence of third-party shared manufacturing platforms (TPSMPs). In the shared manufacturing context, one main challenge to TPSMPs is the matching of manufacturing enterprises with insufficient production capacity (capacity demanders) and those with overcapacity (capacity suppliers), where available capacities of capacity suppliers are within time ranges, and orders of capacity demanders can be split. In this capacity matching problem with capacity time windows and order splitting (CMPCTW-OS), each capacity demander's order needs to be delivered on time, while each capacity supplier can also match with multiple capacity demanders and fulfil orders of the capacity demanders by sequence. A mathematical model for the CMPCTW-OS is developed to maximise the total profit of the TPSMP. Then, we design a two-stage heuristic algorithm to solve this model. In the first stage, the inserting algorithm (IA) is used to obtain an initial feasible solution. In the second stage, the iterated local search (ILS) is applied to optimise and improve the initial feasible solution. Finally, in numerical simulation experiments, the effectiveness of IA-ILS has been verified by comparison with the GUROBI solver.","source":"Semantic Scholar","year":2024,"language":"en","subjects":["Computer Science"],"doi":"10.1080/00207543.2024.2309638","url":"https://www.semanticscholar.org/paper/a1625b7c0fd615bbdaf924a28e7558f645656482","is_open_access":true,"citations":14,"published_at":"","score":68.42},{"id":"ss_5493ec75d04f901a1ba29d602f12c01194fe2bee","title":"Digital Twin-Driven Multi-Factor Production Capacity Prediction for Discrete Manufacturing Workshop","authors":[{"name":"Hu Cai"},{"name":"Jiafu Wan"},{"name":"Baotong Chen"}],"abstract":"Traditional capacity forecasting algorithms lack effective data interaction, leading to a disconnection between the actual plan and production. This paper discusses the multi-factor model based on a discrete manufacturing workshop and proposes a digital twin-driven discrete manufacturing workshop capacity prediction method. Firstly, this paper gives a system framework for production capacity prediction in discrete manufacturing workshops based on digital twins. Then, a mathematical model is described for discrete manufacturing workshop production capacity under multiple disturbance factors. Furthermore, an innovative production capacity prediction method, using the “digital twin + Long-Short-Term Memory Network (LSTM) algorithm”, is presented. Finally, a discrete manufacturing workshop twin platform is deployed using a commemorative disk custom production line as the prototype platform. The verification shows that the proposed method can achieve a prediction accuracy rate of 91.8% for production line capacity. By integrating the optimization feedback function of the digital twin system into the production process control, this paper enables an accurate perception of the current state and future changes in the production system, effectively evaluating the production capacity and delivery date of discrete manufacturing workshops.","source":"Semantic Scholar","year":2024,"language":"en","subjects":null,"doi":"10.3390/app14073119","url":"https://www.semanticscholar.org/paper/5493ec75d04f901a1ba29d602f12c01194fe2bee","pdf_url":"https://www.mdpi.com/2076-3417/14/7/3119/pdf?version=1712565555","is_open_access":true,"citations":8,"published_at":"","score":68.24000000000001},{"id":"doaj_10.3390/jmmp8010029","title":"Exploring a Novel Material and Approach in 3D-Printed Wrist-Hand Orthoses","authors":[{"name":"Diana Popescu"},{"name":"Mariana Cristiana Iacob"},{"name":"Cristian Tarbă"},{"name":"Dan Lăptoiu"},{"name":"Cosmin Mihai Cotruţ"}],"abstract":"This article proposes the integration of two novel aspects into the production of 3D-printed customized wrist-hand orthoses. One aspect involves the material, particularly Colorfabb varioShore thermoplastic polyurethane (TPU) filament with an active foaming agent, which allows adjusting the 3D-printed orthoses’ mechanical properties via process parameters such as printing temperature. Consequently, within the same printing process, by using a single extrusion nozzle, orthoses with varying stiffness levels can be produced, aiming at both immobilization rigidity and skin-comfortable softness. This capability is harnessed by 3D-printing the orthosis in a flat shape via material extrusion-based additive manufacturing, which represents the other novel aspect. Subsequently, the orthosis conforms to the user’s upper limb shape after secure attachment, or by thermoforming in the case of a bi-material solution. A dedicated design web app, which relies on key patient hand measurement input, is also proposed, differing from the 3D scanning and modeling approach that requires engineering expertise and 3D scan data processing. The evaluation of varioShore TPU orthoses with diverse designs was conducted considering printing time, cost, maximum flexion angle, comfort, and perceived wrist stability as criteria. As some of the produced TPU orthoses lacked the necessary stiffness around the wrist or did not properly fit the palm shape, bi-material orthoses including polylactic acid (PLA) inserts of varying sizes were 3D-printed and assessed, showing an improved stiffness around the wrist and a better hand shape conformity. The findings demonstrated the potential of this innovative approach in creating bi-material upper limb orthoses, capitalizing on various characteristics such as varioShore properties, PLA thermoforming capabilities, and the design flexibility provided by additive manufacturing technology.","source":"DOAJ","year":2024,"language":"","subjects":["Production capacity. Manufacturing capacity"],"doi":"10.3390/jmmp8010029","url":"https://www.mdpi.com/2504-4494/8/1/29","is_open_access":true,"published_at":"","score":68},{"id":"doaj_10.3390/jmmp8040134","title":"Dissimilar Welding of Thick Ferritic/Austenitic Steels Plates Using Two Simultaneous Laser Beams in a Single Pass","authors":[{"name":"Fabio Giudice"},{"name":"Severino Missori"},{"name":"Andrea Sili"}],"abstract":"Dissimilar welds between ferritic and austenitic stainless steels are widely used in industrial applications. Taking into account the issues inherent to arc welding, such as the high heat input and the need to carry out multiple passes in the case of thick plates, a procedure with two simultaneous laser beams (working in a single pass) and consumable inserts as filler metal has been considered. Particular attention was paid to the choice of the filler metal (composition and amount), as well as welding parameters, which are crucial to obtain the right dilution necessary for a correct chemical composition in the weld zone. The first experimental investigations confirmed the achievement of a good weldability of the dissimilar pair ASTM A387 ferritic/AISI 304L austenitic steel, having ascertained that the microstructure of the weld zone is austenitic with a little amount of residual primary ferrite, which is the best condition to minimize the risk of hot cracking.","source":"DOAJ","year":2024,"language":"","subjects":["Production capacity. Manufacturing capacity"],"doi":"10.3390/jmmp8040134","url":"https://www.mdpi.com/2504-4494/8/4/134","is_open_access":true,"published_at":"","score":68},{"id":"doaj_10.3390/jmmp8060261","title":"A Review of Magnetic Abrasive Finishing for the Internal Surfaces of Metal Additive Manufactured Parts","authors":[{"name":"Liaoyuan Wang"},{"name":"Yuli Sun"},{"name":"Zhongmin Xiao"},{"name":"Fanxuan Yang"},{"name":"Shijie Kang"},{"name":"Yanlei Liu"},{"name":"Dunwen Zuo"}],"abstract":"With the rapid development of high-end manufacturing industries such as aerospace and national defense, the demand for metal additive manufactured parts with complex internal cavities has been steadily increasing. However, the finishing of complex internal surfaces, especially for irregularly shaped parts, remains a significant challenge due to their intricate geometries. Through a comparative analysis of common finishing methods, the distinctive characteristics and applicability of magnetic abrasive finishing (MAF) are highlighted. To meet the finishing needs of complex metal additive manufactured parts, this paper reviews the current research on magnetic abrasive finishing devices, processing mechanisms, the development of magnetic abrasives, and the MAF processes for intricate internal cavities. Future development trends in MAF for complex internal cavities in additive manufactured parts are also explored; these are (1) investigating multi-technology composite magnetic abrasive finishing equipment designed for complex internal surfaces; (2) studying the dynamic behavior of multiple magnetic abrasive particles in complex cavities and their material removal mechanisms; (3) developing high-performance magnetic abrasives suitable for demanding conditions; and (4) exploring the MAF process for intricate internal surfaces.","source":"DOAJ","year":2024,"language":"","subjects":["Production capacity. Manufacturing capacity"],"doi":"10.3390/jmmp8060261","url":"https://www.mdpi.com/2504-4494/8/6/261","is_open_access":true,"published_at":"","score":68},{"id":"doaj_10.3390/jmmp8020057","title":"Advances in Additive Friction Extrusion Deposition (AFED): Process and Tool Design","authors":[{"name":"Max Hossfeld"},{"name":"Arnold Wright"}],"abstract":"Additive friction extrusion deposition (AFED) is a recently developed additive manufacturing technique that promises high deposition rates at low forces. Due to the novelty of the process, the underlying phenomena and their interactions are not fully understood, and in particular, the processing strategy and tool design are still in their infancy. This work contributes to the state-of-the-art of AFED through a comprehensive analysis of its working principles and an experimental program, including a representative sample component. The working principle and process mechanics of AFED are broken down into their individual components. The forces and their origins and effects on the process are described, and measures of process efficiency and theoretical minimum energy consumption are derived. Three geometrical features of the extrusion die were identified as most relevant to the active material flow, process forces, and deposition quality: the topography of the inner and outer circular surfaces and the geometry of its extrusion channels. Based on this, the experimental program investigated seven different tool designs in terms of efficiency, force reduction, and throughput. The experiments using AA 6061-T6 as feedstock show that AFED is capable of both high material throughput (close to 550 mm\u003csup\u003e3\u003c/sup\u003e/s) and reduced substrate forces, for example, the forces for a run at 100 mm\u003csup\u003e3\u003c/sup\u003e/s remained continuously below 500 N and for a run at 400 mm\u003csup\u003e3\u003c/sup\u003e/s below 3500 N. The material flow and microstructure of AFED were assessed from macro-sections. Significant differences were found between the advancing and retracting sides for both process effects and material flow. Banded structures in the microstructure show strong similarities to other solid-state processes. The manufacturing of the sample components demonstrates that AFED is already capable of producing industrial-grade components. In mechanical tests, interlayer bonding defects resulted in more brittle failure behavior in the build direction of the structure, whereas in the horizontal direction, mechanical properties corresponding to a T4 temper were achieved.","source":"DOAJ","year":2024,"language":"","subjects":["Production capacity. Manufacturing capacity"],"doi":"10.3390/jmmp8020057","url":"https://www.mdpi.com/2504-4494/8/2/57","is_open_access":true,"published_at":"","score":68},{"id":"arxiv_2407.21732","title":"On the Zero-Error Capacity of Semantic Channels with Input and Output Memories","authors":[{"name":"Qi Cao"},{"name":"Yulin Shao"},{"name":"Shangwei Ge"}],"abstract":"This paper investigates the zero-error capacity of channels with memory. Motivated by the nuanced requirements of semantic communication that incorporate memory, we advance the classical enlightened dictator channel by introducing a new category known as the semantic channel. We analyze the zero-error capacity of the semantic channel using a comprehensive framework that accommodates multiple input and output memories. Our approach reveals a more sophisticated and detailed model compared to the classical memory channels, highlighting the impact of memory on achieving error-free communication.","source":"arXiv","year":2024,"language":"en","subjects":["cs.IT"],"url":"https://arxiv.org/abs/2407.21732","pdf_url":"https://arxiv.org/pdf/2407.21732","is_open_access":true,"published_at":"2024-07-31T16:35:51Z","score":68},{"id":"ss_a81c872289c6b3e15638f76788d08f67fc0cce1a","title":"The moderating effect of absorptive capacity on transnational knowledge spillover and the innovation quality of high-tech industries in host countries: Evidence from the Chinese manufacturing industry","authors":[{"name":"Yunlong Duan"},{"name":"Shulin Liu"},{"name":"Hao Cheng"},{"name":"Tachia Chin"},{"name":"Xuan Luo"}],"abstract":"Abstract A considerable literature has grown up around the theme of the impact of knowledge spillover on the firm's innovation performance. Nevertheless, few literatures draw on any research into the impact of transnational knowledge spillover on innovation quality, especially from conscious and unconscious perspectives. What's more, it has been proven that absorptive capacity plays a crucial role on innovation quality, while the relationship between knowledge spillover and absorptive capacity and its impact on innovation quality have yet to be identified. This study therefore defines the transnational knowledge spillover and distinguishes it from involuntary to voluntary, analyzes their impact on the innovation quality of high-tech industries in host countries, and builds a theoretical model that involves absorptive capacity as the moderating variable. Meanwhile, this study collects data on China's high-tech manufacturing industries from 2010 to 2017 to conduct an empirical analysis and the main results were described as following: with an increase in unconscious transnational knowledge spillover, the innovation quality of high-tech manufacturing industries firstly decreases and then increases. Conversely, with an increase in conscious transnational knowledge spillover, the innovation quality of high-tech manufacturing industries firstly increases and then decreases. Impressively, absorptive capacity has a significant positive moderating effect on the relationship between transnational knowledge spillover and the innovation quality of high-tech industries in host countries.","source":"Semantic Scholar","year":2021,"language":"en","subjects":["Business"],"doi":"10.1016/j.ijpe.2020.108019","url":"https://www.semanticscholar.org/paper/a81c872289c6b3e15638f76788d08f67fc0cce1a","is_open_access":true,"citations":87,"published_at":"","score":67.61},{"id":"ss_f172e7daecfc8db011e20e9cb7975f3c4b5d3907","title":"Upscaling vaccine manufacturing capacity - key bottlenecks and lessons learned","authors":[{"name":"J. Feddema"},{"name":"Kenneth Fernald"},{"name":"Hans Schikan"},{"name":"L. H. van de Burgwal"}],"abstract":"The COVID-19 pandemic put enormous pressure on the vaccine production chain as billions of vaccines had to be produced in the shortest timeframe possible. Vaccine production chains struggled to keep up with demand, resulting in disruptions and production delays. This study aimed to make an inventory of challenges and opportunities that occurred in the production chain of the COVID-19 vaccine. Insights derived through approximately 80 interviews and roundtable discussions were combined with findings from a scoping literature review. Data were analysed through an inductive process where barriers and opportunities were linked to specific facets of the production chain. Key bottlenecks identified include a lack of manufacturing facilities, a lack of tech-transfer personnel, inefficient arrangement of production stakeholders, critical shortages in raw materials, and restricting protectionist measures. A need for a central governing body to map out shortages and to coordinate allocation of available resource became evident. Other suggested solutions were to repurpose existing facilities and to build in more flexibility in the production process by making materials interchangeable. Also, simplification of the production chain could be achieved through geographical reengagement of processes. Three overarching themes were identified, impacting overall functioning of the vaccine production chain: regulatory and visibility, collaboration and communication, and funding and policy. The results in this study showed a multitude of interdependent processes underlying the vaccine production chain, executed by diverse stakeholders with differing objectives. It characterizes the global complexity of the pharmaceutical production chain and highlights its extreme vulnerability to disruptions. More resilience and robustness must be integrated into the vaccine production chain, and low-middle income countries should be empowered to manufacture vaccines themselves. In conclusion, there’s a need to rethink the production system for vaccines and other essential medicines in order to become better prepared for future health crises.","source":"Semantic Scholar","year":2023,"language":"en","subjects":["Medicine"],"doi":"10.1016/j.vaccine.2023.05.027","url":"https://www.semanticscholar.org/paper/f172e7daecfc8db011e20e9cb7975f3c4b5d3907","pdf_url":"https://doi.org/10.1016/j.vaccine.2023.05.027","is_open_access":true,"citations":19,"published_at":"","score":67.57},{"id":"ss_92b6f14843352029a125fe250d7af1083f41da0f","title":"Building global vaccine manufacturing capacity: Spotlight on Africa.","authors":[{"name":"Lewis John Rubin Thompson"},{"name":"Myriam Grubo"},{"name":"M. Veller"},{"name":"Robyn Hayes Badenhorst"},{"name":"Joshua Nott"},{"name":"Luc Debruyne"},{"name":"T. Makadzange"},{"name":"S. Nicolaou"},{"name":"Lawrence Stanberry"},{"name":"A. Sall"},{"name":"Wilmot G James"}],"abstract":"Africa is set to experience a three-fold increase in vaccine demand by 2040, yet the continent possesses few domestic capabilities for vaccine production. This lack of production capacity, heavy reliance on foreign aid, disruptions of hard-won immunization progress due to the effects of the COVID-19 pandemic, and fluctuating vaccine market dynamics threaten to hinder ongoing efforts to increase vaccination rates on the continent. In order meet the vaccine demands of a rapidly growing population, and to be able to provide novel vaccines to its population in the future, the African continent must develop a sustainable vaccine manufacturing infrastructure. The African Union, in partnership with the Africa Centres for Disease Control and Prevention, recently set forth its Program for African Vaccine Manufacturing Framework for Action, which sets the goal of Africa producing 60 % of its vaccine needs by 2040. To meet these goals, African governments and their multinational, philanthropic, and private sector partners must work to secure low-cost financing and provide a favourable regulatory environment for nascent African vaccine manufacturers. Doing so will save lives, safeguard the health of the continent's current and future citizens, and contribute to economic growth through the development of local bioeconomies.","source":"Semantic Scholar","year":2023,"language":"en","subjects":["Medicine"],"doi":"10.1016/j.vaccine.2023.05.009","url":"https://www.semanticscholar.org/paper/92b6f14843352029a125fe250d7af1083f41da0f","is_open_access":true,"citations":16,"published_at":"","score":67.47999999999999},{"id":"ss_7c541fd9083aef69ebea90d2897891671bb23475","title":"Blockchain-based tripartite evolutionary game study of manufacturing capacity sharing","authors":[{"name":"T.Y. Wang"},{"name":"H. Zhang"}],"abstract":"In the context of the new round of manufacturing innovation, the sharing economy drives the transformation of manufacturing industry to accelerate the integration and development. However, there are some problems in the process of manufacturing capacity sharing, such as information privacy and security, and difficulty in tracing the sharing process, etc. The application of blockchain technology can effectively solve these problems. To explore the capacity sharing behaviour of manufacturing enterprises from the perspective of blockchain, the article combines evolutionary game theory and constructs a tripartite game model of manufacturing capacity sharing. The replication dynamics and evolutionary stability of the model are analysed using evolutionary game theory, and numerical simulations are carried out using MATLAB software to analyse the impact of parameter changes on the evolutionary outcome. The research results show that the incentive and penalty coefficients under blockchain technology have a facilitating effect on enterprises to carry out sharing, and the enhancement of reputation gain coefficient and loss can promote positive services on the platform.","source":"Semantic Scholar","year":2023,"language":"en","subjects":null,"doi":"10.14743/apem2023.2.469","url":"https://www.semanticscholar.org/paper/7c541fd9083aef69ebea90d2897891671bb23475","pdf_url":"https://apem-journal.org/Archives/2023/Abstract-APEM18-2_225-236.pdf","is_open_access":true,"citations":10,"published_at":"","score":67.3},{"id":"doaj_10.5552/drvind.2023.0012","title":"Additive Technologies and Their Applications in Furniture Design and Manufacturing","authors":[{"name":"Lana Jarža"},{"name":"Anka Ozana Čavlović"},{"name":"Stjepan Pervan"},{"name":"Nikola Španić"},{"name":"Miljenko Klarić"},{"name":"Silvana Prekrat"}],"abstract":"This paper deals with an overview of additive manufacturing and its segment - 3D printing, which is today rapidly and widely used (Agashe et al., 2020) for personal and high-capacity production. The paper discusses the possible positive factors such as small and personalized production series, cheaper design and production process, complex geometry, bionic structures (whose surfaces are complicated to make, and are copy of biological organisms) and negative factors such as lack of educated specialists and trainings. Those facts are affecting the implementation of these technologies in different segments of the design, product development and furniture production. The impacts of new technologies on the design and production of rapid prototypes and finished products in furniture industry are analyzed. The positive results of using additive manufacturing indicate that, in spite of minor obstacles and problems with connecting different production processes, additive production will have a significant place in the future of furniture design and production. The most important advantages of 3D printing is fast prototyping, one piece production, free form designing and the use of bio-based materials and their possibility of recycling.","source":"DOAJ","year":2023,"language":"","subjects":["Forestry"],"doi":"10.5552/drvind.2023.0012","url":"https://hrcak.srce.hr/file/428834","pdf_url":"https://hrcak.srce.hr/file/428834","is_open_access":true,"published_at":"","score":67},{"id":"doaj_10.3390/foods12081662","title":"Effects of Incorporation of Porous Tapioca Starch on the Quality of White Salted (Udon) Noodles","authors":[{"name":"Anju Pokharel"},{"name":"Randhir Kumar Jaidka"},{"name":"N. U. Sruthi"},{"name":"Rewati Raman Bhattarai"}],"abstract":"White salted (udon) noodles are one of the major staple foods in Asian countries, particularly in Japan. Noodle manufacturers prefer the Australian noodle wheat (ANW) varieties to produce high-quality udon noodles. However, the production of this variety has reduced significantly in recent years, thus affecting the Japanese noodle market. Noodle manufacturers often add tapioca starch to compensate for the flour scarcity; however, the noodle-eating quality and texture are significantly reduced. This study, therefore, investigated the effect of the addition of porous tapioca starch on the cooking quality and texture of udon noodles. For this, tapioca starch was initially subjected to enzyme treatment, ultrasonication, and a combination of both to produce a porous starch where a combined enzyme (0.4% alpha amylase)–ultrasound treatment (20 kHz) yielded a porous starch with increased specific surface area and better absorbent properties which are ideal for udon noodle manufacturing, Later, udon noodles were prepared using three varieties of ANW, a hard Mace variety, and commercial wheat flour by incorporating the prepared porous tapioca starch at a concentration of 5% and 10% of dry ingredients. Adding this porous starch resulted in a lower cooking time with higher water absorption and desirable lower cooking loss compared to the control sample with 5% of the porous starch chosen as the optimum formulation. Increasing the level of the porous starch reduced the hardness of the noodles whilst maintaining the desired instrumental texture. Additionally, a multivariate analysis indicated a good correlation between responses’ optimum cooking time and water absorption capacity as well as turbidity and cooking loss, and a cluster analysis grouped noodle samples prepared from different varieties into the same clusters based on the porous starch added, indicating the possibility of different market strategies to improve the quality of the udon noodles produced from different wheat varieties.","source":"DOAJ","year":2023,"language":"","subjects":["Chemical technology"],"doi":"10.3390/foods12081662","url":"https://www.mdpi.com/2304-8158/12/8/1662","is_open_access":true,"published_at":"","score":67}],"total":348205,"page":1,"page_size":20,"sources":["DOAJ","arXiv","Semantic Scholar"],"query":"Production capacity. Manufacturing capacity"}