Essential prerequisite of laparoscopic operation is establishing and maintaining pneumoperitoneum with a certain pressure. But under certain circumstances CO2-gas insuffiating could induce pneumothorax , pneumomediast...Essential prerequisite of laparoscopic operation is establishing and maintaining pneumoperitoneum with a certain pressure. But under certain circumstances CO2-gas insuffiating could induce pneumothorax , pneumomediastinum and subcutaneous emphysema during the operation. to probe the mechanism of the above complications. 2 typical cases were reported with attempt to probe the mechanism of the development of such applications. We believe that high intraabdominal pressure during operation is the primary cause of the complications. The essentials of prevention and management of such complications were proposed.展开更多
Objective: to analyze the effect of different operation time on the treatment of acute intestinal obstruction. Methods: 60 patients with acute intestinal obstruction admitted to our hospital were selected as research ...Objective: to analyze the effect of different operation time on the treatment of acute intestinal obstruction. Methods: 60 patients with acute intestinal obstruction admitted to our hospital were selected as research objects (the time range was from April 2019 to April 2020), and then they were equally included into the control group and the observation group according to the order of admission time. Conservative treatment and intervention were carried out in both groups, and appropriate therapeutic methods were selected according to the specific etiology, symptoms and signs of the patients. The operation time of the control group and the observation group were 48 hours after onset and 48 hours after onset, respectively. The clinical indexes and complications after treatment were compared between the two groups. Results: after treatment, compared with the control group, the gastrointestinal function recovery time, ambulation time and hospitalization time of the observation group were shorter, P < 0.05;The total incidence and mortality rate of postoperative complications were lower (P < 0.05). Conclusion: surgical treatment for acute intestinal obstruction patients within 48 hours of onset is effective, which can significantly speed up the prognosis and rehabilitation, reduce the incidence of postoperative complications and mortality, and is worthy of promotion and application.展开更多
On December 18,2025, Hainan Free Trade Port (Hainan FTP) officially began islandwide special customs operations.Although only two months have passed since this landmark step, the shift is already visible everywhere—f...On December 18,2025, Hainan Free Trade Port (Hainan FTP) officially began islandwide special customs operations.Although only two months have passed since this landmark step, the shift is already visible everywhere—from the bustling flow of international passengers at Haikou Meilan International Airport to the steady stream of cargo vessels calling at Yangpu Port, and even in the sustained attention investors are paying to “Hainan-related” stocks.Together, these signals point to one clear conclusion:China’s largest special economic zone has entered a new phase of development.展开更多
AIM：To investigate the effects of preoperative other diseases on the complications of senile cerical vertebral operation in perioperative period.METHODS:800 senile cervical vertebral cases were divided into two group...AIM：To investigate the effects of preoperative other diseases on the complications of senile cerical vertebral operation in perioperative period.METHODS:800 senile cervical vertebral cases were divided into two group:group A included the cases without other comorbidities,and group B included the cases with hypertension,diabetes mellitus,coronary heart disease (GHD) or chronic obstructive pulmonary disease(COPD).We retrospectively analyzed the changes of BP,oxygen saturation (SaO2) and the incidence of cardiac arrhythmia during operation of group A and B.RESULTS:In perioperative period,the incidence of B reduction or rising and cardiac arrhythmia in group B was more than that of group A.Incidence of SaO2 decreasing increases apparently in each stage and incidence of cerebrovascular,pulmonary complications and asphyxia led by incision bleeding increases apparently.CONCLUSION:The hypertension,CHD,diabetes mellitus and COPD were the main reasons of complications of the heart,the cerebral vessels and the lung,kidney and the incision bleeding in perioperative period of senile patients.展开更多
This paper studies cooperative robust parallel operation of multiple actuators over an undirected communication graph.The plant is modeled as an uncertain linear system,and the actuators are linear and identical.Based...This paper studies cooperative robust parallel operation of multiple actuators over an undirected communication graph.The plant is modeled as an uncertain linear system,and the actuators are linear and identical.Based on the internal model principle,a distributed dynamic output feedback control law is proposed to achieve both robust output regulation of the closed-loop system and plant input sharing among the actuators.A practical example of five motors cooperatively driving an uncertain shaft under an external load torque is presented to show the effectiveness of the proposed control law.展开更多
Digital twin technology brings more opportunities and challenges to chemical engineering in both academic and industry.A complex process could have multiple digitalization needs,including simulation,monitoring,operato...Digital twin technology brings more opportunities and challenges to chemical engineering in both academic and industry.A complex process could have multiple digitalization needs,including simulation,monitoring,operator training,etc.;thus,a hierarchical digital twin would be a comprehensive solution to that.In this study,a novel and general framework of the digital twin is proposed for operations in process industry.With the hierarchical structure,the framework can handle various tasks driven by different roles in process industry,including managers,engineers,and operators.To complete these tasks,the framework consists of three modules:OAS(Operation Analysis System),OMS(Operation Monitoring System),and OTS(Operator Training System).Each module focuses on one unique type of demand from the staff,as well as interactions among them enabling efficient data sharing.Based on the hierarchical framework,a digital twin system is applied for one complex industrial nitration process,which successfully enhances the operation efficiency and safety in several industrial scenarios with different demands.展开更多
Liver transplantation is a life-saving procedure for patients with end-stage liver diseases and acute liver failure.With advances in surgical techniques and immunosuppressive regimens,patient survival rates have signi...Liver transplantation is a life-saving procedure for patients with end-stage liver diseases and acute liver failure.With advances in surgical techniques and immunosuppressive regimens,patient survival rates have significantly improved.While the systemic complications of post-transplantation are well recognized,ophthalmic manifestations remain underreported.Ophthalmic complications can significantly impair visual function and increase morbidity in these patients.Prolonged immunosuppression makes the patients susceptible to the opportunistic pathogens such as Cytomegalovirus,Candida,Aspergillus,etc.Other common findings include dry eye disease,cataracts and retinal vascular complications which further contribute to the long-term morbidity in these patients.Early ophthalmic evaluation and prompt management are essential to prevent irreversible vision loss and improve post-transplant outcomes.High index of suspicion and multidisciplinary approach is essential to facilitate early diagnosis and treatment.This review highlights the range of ophthalmic complications observed in liver transplant recipients and underscores the need for future research focused on understanding the underlying pathophysiological mechanisms and refining the prophylactic protocols to improve outcomes in this unique patient population.展开更多
Objective:To explore the clinical effect of personalized nutritional support in elderly women with gestational diabetes(GDM),and explore its impact on the incidence of maternal complications and pregnancy outcomes.Met...Objective:To explore the clinical effect of personalized nutritional support in elderly women with gestational diabetes(GDM),and explore its impact on the incidence of maternal complications and pregnancy outcomes.Methods:A total of 90 elderly pregnant women with gestational diabetes who were delivered in our hospital from January 2023 to January 2024 were selected as the research objects.They were randomly divided into an observation group and a control group,with 45 cases in each group.The control group only received routine pregnancy care and basic nutrition guidance,while the observation group received personalized nutrition support on this basis.Compare the blood glucose control,incidence of pregnancy complications,pregnancy outcomes,and neonatal outcomes between two groups of parturient.Result:After intervention,the fasting blood glucose(FPG),2-hour postprandial blood glucose(2hPG),and glycated hemoglobin(HbA1c)of the observation group were significantly lower than those of the control group,and the differences were statistically significant(p<0.05);The incidence of complications such as gestational hypertension syndrome,polyhydramnios,premature rupture of membranes,and postpartum hemorrhage in the observation group was significantly lower than that in the control group,and the difference was statistically significant(p<0.05);The cesarean section rate in the observation group was significantly lower than that in the control group,and the incidence of adverse neonatal outcomes such as fetal distress,macrosomia,neonatal asphyxia,and neonatal hypoglycemia in the observation group was significantly lower than that in the control group,with statistical significance(p<0.05).Conclusion:Individualized nutritional support for elderly women with gestational diabetes can effectively improve the level of maternal blood sugar control,reduce the incidence of complications during pregnancy,and improve the outcome of pregnancy and neonatal outcomes,which is of high clinical value.展开更多
BACKGROUND Elderly patients with colorectal cancer(CRC)can judge the risk of postoperative complications and oncological outcomes due to visceral obesity,which can provide data reference for the early prediction of pr...BACKGROUND Elderly patients with colorectal cancer(CRC)can judge the risk of postoperative complications and oncological outcomes due to visceral obesity,which can provide data reference for the early prediction of prognosis.AIM To explore the effect of visceral obesity on postoperative complications and oncological outcomes in elderly patients with CRC.METHODS A total of 150 elderly patients who underwent radical surgery for CRC at Inner Mongolia Medical University and Inner Mongolia Autonomous Region People’s Hospital from January 2021 to June 2024 were retrospectively analyzed.Patients were divided into the abdominal[visceral fat area(VFA)≥100.00 cm^(2),n=80]and non-abdominal(VFA<100.00 cm^(2),n=70)obesity groups according to the VFA measured by preoperative computed tomography.The two groups showed no significant differences in age,sex,tumor location,tumor-node-metastasis stage,and underlying disease(P>0.05).All patients underwent standardized laparoscopic assisted surgery and received unified perioperative management.Complications,nutritional status,changes in biochemical indicators,and tumor recurrence and metastasis were evaluated postoperatively.RESULTS The overall incidence of postoperative complications was significantly higher in the abdominal obesity group than in the non-abdominal obesity group(P<0.05).The pulmonary infection on postoperative day(POD)3(P=0.038),anastomotic leakage on POD 7(P=0.042),and moderate-to-severe complications(Clavien-Dindo class III,P=0.03)were significantly different.With respect to biochemical indicators,the white blood cell count,neutrophil percentage,and C-reactive protein level in the abdominal obesity group continuously increased after surgery(P<0.05);the albumin level on POD 1 was even lower(P=0.024).Regarding tumor markers,carcinoembryonic antigen(P=0.039)and carbohydrate antigen 19-9(P=0.048)levels were significantly higher in the abdominal obesity group at 3 months after surgery,and local recurrence rates were higher than those in the non-abdominal obesity group at 30 days and 3 months after surgery(P<0.05).Abdominal obesity was an independent risk factor for postoperative complications(odds ratio:3.843,P=0.001),overall survival[hazard ratio(HR):1.937,P=0.011],and disease-free survival(HR:1.769,P=0.018).CONCLUSION Visceral obesity significantly increases the risk of postoperative complications in elderly patients with CRC and may adversely affect short-term tumor prognosis.Preoperative risk identification and interventions for abdominal obesity should be strengthened to improve perioperative safety and postoperative rehabilitation quality.展开更多
Efficient implementation of fundamental matrix operations on quantum computers,such as matrix products and Hadamard operations,holds significant potential for accelerating machine learning algorithms.A critical prereq...Efficient implementation of fundamental matrix operations on quantum computers,such as matrix products and Hadamard operations,holds significant potential for accelerating machine learning algorithms.A critical prerequisite for quantum implementations is the effective encoding of classical data into quantum states.We propose two quantum computing frameworks for preparing the distinct encoded states corresponding to matrix operations,including the matrix product,matrix sum,matrix Hadamard product and division.Quantum algorithms based on the digital encoding computing framework are capable of implementing the matrix Hadamard operation with a time complexity of O(poly log(mn/ε))and the matrix product with a time complexity of O(poly log(mnl/ε)),achieving an exponential speedup in contrast to the classical methods of O(mn)and O(mnl).Quantum algorithms based on the analog-encoding framework are capable of implementing the matrix Hadamard operation with a time complexity of O(k_(1)√mn·poly log(mn/ε))and the matrix product with a time complexity of O(k_(2)√1·poly log(mnl/ε)),where k_(1)and k_(2)are coefficients correlated with the elements of the matrix,achieving a square speedup in contrast to the classical counterparts.As applications,we construct an oracle that can access the trace of a matrix within logarithmic time,and propose several algorithms to respectively estimate the trace of a matrix,the trace of the product of two matrices,and the trace inner product of two matrices within logarithmic time.展开更多
Objective:To explore the therapeutic effect of double-puncture tympanic membrane puncture and tympanic cavity drug injection in patients with acute secretory otitis media.Methods:A total of 84 patients with acute secr...Objective:To explore the therapeutic effect of double-puncture tympanic membrane puncture and tympanic cavity drug injection in patients with acute secretory otitis media.Methods:A total of 84 patients with acute secretory otitis media admitted to our hospital from June 2024 to June 2025 were selected and randomly divided into two groups by drawing lots.The control group(42 cases)was treated with the traditional single-puncture tympanic membrane puncture and tympanic cavity drug injection method,while the observation group(42 cases)was treated with the double-puncture tympanic membrane puncture and tympanic cavity drug injection method.The therapeutic effects of the two groups were compared.Results:The overall treatment response rate,overall complication rate,time to symptom relief,and improvement in hearing threshold in the observation group were all superior to those in the control group,with statistically significant differences(P<0.05).Conclusion:For acute secretory otitis media,the treatment method of double-puncture tympanic membrane puncture and tympanic cavity drug injection demonstrates definite efficacy,significantly reducing the incidence of complications,accelerating symptom relief,and improving hearing function,making it worthy of promotion.展开更多
In order to solve the problems of slow dynamic response and difficult multi-source coordination of solar electric vehicle charging stations under intermittent renewable energy,this paper proposes a hardware-algorithm ...In order to solve the problems of slow dynamic response and difficult multi-source coordination of solar electric vehicle charging stations under intermittent renewable energy,this paper proposes a hardware-algorithm co-design framework:the T-type three-level bidirectional converter(100 kHz switching frequency)based on silicon carbide(SiC)MOSFET is deeply integrated with fuzzy model predictive control(Fuzzy-MPC).At the hardware level,the switching trajectory and resonance suppression circuit(attenuation resonance peak 18 dB)are optimized,and the total loss is reduced by 23%compared with the traditional silicon-based IGBT.At the algorithm level,the adaptive parameter update mechanism and multi-objective rolling optimization are adopted,and the 5 ms level dynamic power allocation is realized by relying on edge computing.Experiments on 800 V DC microgrid(including 600 kW photovoltaic and 150 A·h energy storage)built based on MATLAB/Simulink hardware-in-the-loop(HIL)platform show that the system shortens the battery charging time from 42 to 28 min(the charging speed is increased by 33%).Through the 78%valley power utilization rate,the power purchase cost of high-priced power grids was significantly reduced,and the levelized electricity price decreased by 10.3%;Under the irradiation fluctuation,the renewable energy consumption rate increases by 10.1%,and the DC bus voltage fluctuation is stable within±10 V when the load step is±30%.The co-design provides an economically feasible and dynamically robust solution for the efficient integration of PV-ESG-EV in the smart grid.展开更多
As joint operations have become a key trend in modern military development,unmanned aerial vehicles(UAVs)play an increasingly important role in enhancing the intelligence and responsiveness of combat systems.However,t...As joint operations have become a key trend in modern military development,unmanned aerial vehicles(UAVs)play an increasingly important role in enhancing the intelligence and responsiveness of combat systems.However,the heterogeneity of aircraft,partial observability,and dynamic uncertainty in operational airspace pose significant challenges to autonomous collision avoidance using traditional methods.To address these issues,this paper proposes an adaptive collision avoidance approach for UAVs based on deep reinforcement learning.First,a unified uncertainty model incorporating dynamic wind fields is constructed to capture the complexity of joint operational environments.Then,to effectively handle the heterogeneity between manned and unmanned aircraft and the limitations of dynamic observations,a sector-based partial observation mechanism is designed.A Dynamic Threat Prioritization Assessment algorithm is also proposed to evaluate potential collision threats from multiple dimensions,including time to closest approach,minimum separation distance,and aircraft type.Furthermore,a Hierarchical Prioritized Experience Replay(HPER)mechanism is introduced,which classifies experience samples into high,medium,and low priority levels to preferentially sample critical experiences,thereby improving learning efficiency and accelerating policy convergence.Simulation results show that the proposed HPER-D3QN algorithm outperforms existing methods in terms of learning speed,environmental adaptability,and robustness,significantly enhancing collision avoidance performance and convergence rate.Finally,transfer experiments on a high-fidelity battlefield airspace simulation platform validate the proposed method's deployment potential and practical applicability in complex,real-world joint operational scenarios.展开更多
For ordinary tourists, simpler entry and exit procedures and a broader range of duty-free goods in Hainan create a better travel and shopping experience.For China’s earnest endeavor to deepen reform and opening-up, i...For ordinary tourists, simpler entry and exit procedures and a broader range of duty-free goods in Hainan create a better travel and shopping experience.For China’s earnest endeavor to deepen reform and opening-up, implementation of the special customs operations policy in Hainan represents a significant step forward. For businesses in Malaysia and other ASEAN member states, especially export-oriented small and medium-sized enterprises (SMEs), Hainan serves as a“transit hub” for accessing the Chinese market and even other Asian markets.展开更多
With the gradual implementation of a series of institutional arrangements, H ainan is becoming a new hot spot for global investment and an ideal destination for starting businesses and developing industry. While attra...With the gradual implementation of a series of institutional arrangements, H ainan is becoming a new hot spot for global investment and an ideal destination for starting businesses and developing industry. While attracting foreign investment projects, it is also creating more favorable conditions for local enterprises to expand into international markets.展开更多
At 11:00 p.m. on January 13, 2026, floodlights illuminated the launch pad at the Hainan Commercial Space Launch Site in Wenchang,south China’s Hainan Province. A Long March-8A (CZ-8A) carrier rocket lifted off with a...At 11:00 p.m. on January 13, 2026, floodlights illuminated the launch pad at the Hainan Commercial Space Launch Site in Wenchang,south China’s Hainan Province. A Long March-8A (CZ-8A) carrier rocket lifted off with a steady roar, its exhaust lighting up the night sky as it delivered a satellite into its designated orbit.The development of China’s first commercial space launch site has been striking. Since its inaugural launch in2024, it has completed 11 missions in less than 14 months—each a success.展开更多
THE Hainan Free Trade Port(FTP)officially launched island-wide special customs operations on December 18,2025.One month in,a reporting team from China International Communications Group(CICG)conducted an exclusive int...THE Hainan Free Trade Port(FTP)officially launched island-wide special customs operations on December 18,2025.One month in,a reporting team from China International Communications Group(CICG)conducted an exclusive interview with Feng Fei,secretary of the Hainan Provincial Committee of the Communist Party of China(CPC)and chairman of the Standing Committee of the Hainan Provincial People’s Congress.展开更多
Loday introduced di-associative algebras and tri-associative algebras motivated by periodicity phenomena in algebraic K-theory.The purpose of this paper is to study the splittings of operations on di-associative algeb...Loday introduced di-associative algebras and tri-associative algebras motivated by periodicity phenomena in algebraic K-theory.The purpose of this paper is to study the splittings of operations on di-associative algebras and tri-associative algebras.We introduce the notion of a quad-dendriform algebra,which is a splitting of a di-associative algebra.We show that a relative averaging operator on dendriform algebras gives rise to a quad-dendriform algebra.Furthermore,we introduce the notion of six-dendriform algebras,which are splittings of the tri-associative algebras,and demonstrate that homomorphic relative averaging operators induce six-dendriform algebras.展开更多
AIM:To investigate the occurrence of postoperative complications of gastric cancer surgery,and analyze the potential causes of reoperation for early postoperative complications. METHODS:A total of 1639 patients who un...AIM:To investigate the occurrence of postoperative complications of gastric cancer surgery,and analyze the potential causes of reoperation for early postoperative complications. METHODS:A total of 1639 patients who underwent radical or palliative gastrectomies for gastric cancer were included in the study.The study endpoint was the analysis of postoperative complications in inpatients. RESULTS:About 31%of patients had early postoperative complications,and complications of infection occurred most frequently.Intra-abdominal hemorrhage and anastomotic leak were the main causes of reoperation,which accounted for about 2.2%.Mortality was 11.1%in the reoperation group,but was only 0.8%in other patients.The duration of postoperative stay in hospital was significantly longer and the total expenditure was markedly higher in the patients who underwent reoperation(P<0.001).There was no significant association of any available factors in this study with the high rate of reoperation.CONCLUSION:Reoperation significantly increases the mortality rate and raises the burden of the surgical unit.More prospective studies are required to explore the potential risk factors.展开更多
Background: In children, acute bacterial rhinosinusitis (ABRS) is often complicated by ophthalmological and/or neurological involvement. These complications should be known and recognized, as they require urgent treat...Background: In children, acute bacterial rhinosinusitis (ABRS) is often complicated by ophthalmological and/or neurological involvement. These complications should be known and recognized, as they require urgent treatment with intravenous antibiotics and close in-hospital monitoring. In this study, we aimed to identify the main risk factors associated with the development of complications in children aged 2 - 17 years with ABRS. Methods: We conducted a retrospective cohort study of patients with ABRS complications in a primary hospital. Participants were divided into two groups: the control group comprising patients without complications (Group 1, n = 82) and the study group comprising patients with complications requiring hospitalization (Group 2, n = 41). We assessed the sociodemographic, clinical, and imaging data of both groups. Using multivariate logistic regression, we assessed risk factors of ABRS complications. Results: No socio-demographic characteristics were associated with ABRS complications (p ≥ 0.05). Factors associated with complications were delay in consultation (t = 5.282;p Conclusions: Intracranial and extracranial complications of ABRS in children have become rare in our setting. These complications can be serious and potentially fatal. Risk factors of these complications are delays in consultation, the presence of ophthalmological signs, and more than one affected sinus. Controlling modifiable factors would improve the treatment success of ABRS complications in children.展开更多
文摘Essential prerequisite of laparoscopic operation is establishing and maintaining pneumoperitoneum with a certain pressure. But under certain circumstances CO2-gas insuffiating could induce pneumothorax , pneumomediastinum and subcutaneous emphysema during the operation. to probe the mechanism of the above complications. 2 typical cases were reported with attempt to probe the mechanism of the development of such applications. We believe that high intraabdominal pressure during operation is the primary cause of the complications. The essentials of prevention and management of such complications were proposed.
文摘Objective: to analyze the effect of different operation time on the treatment of acute intestinal obstruction. Methods: 60 patients with acute intestinal obstruction admitted to our hospital were selected as research objects (the time range was from April 2019 to April 2020), and then they were equally included into the control group and the observation group according to the order of admission time. Conservative treatment and intervention were carried out in both groups, and appropriate therapeutic methods were selected according to the specific etiology, symptoms and signs of the patients. The operation time of the control group and the observation group were 48 hours after onset and 48 hours after onset, respectively. The clinical indexes and complications after treatment were compared between the two groups. Results: after treatment, compared with the control group, the gastrointestinal function recovery time, ambulation time and hospitalization time of the observation group were shorter, P < 0.05;The total incidence and mortality rate of postoperative complications were lower (P < 0.05). Conclusion: surgical treatment for acute intestinal obstruction patients within 48 hours of onset is effective, which can significantly speed up the prognosis and rehabilitation, reduce the incidence of postoperative complications and mortality, and is worthy of promotion and application.
文摘On December 18,2025, Hainan Free Trade Port (Hainan FTP) officially began islandwide special customs operations.Although only two months have passed since this landmark step, the shift is already visible everywhere—from the bustling flow of international passengers at Haikou Meilan International Airport to the steady stream of cargo vessels calling at Yangpu Port, and even in the sustained attention investors are paying to “Hainan-related” stocks.Together, these signals point to one clear conclusion:China’s largest special economic zone has entered a new phase of development.
文摘AIM：To investigate the effects of preoperative other diseases on the complications of senile cerical vertebral operation in perioperative period.METHODS:800 senile cervical vertebral cases were divided into two group:group A included the cases without other comorbidities,and group B included the cases with hypertension,diabetes mellitus,coronary heart disease (GHD) or chronic obstructive pulmonary disease(COPD).We retrospectively analyzed the changes of BP,oxygen saturation (SaO2) and the incidence of cardiac arrhythmia during operation of group A and B.RESULTS:In perioperative period,the incidence of B reduction or rising and cardiac arrhythmia in group B was more than that of group A.Incidence of SaO2 decreasing increases apparently in each stage and incidence of cerebrovascular,pulmonary complications and asphyxia led by incision bleeding increases apparently.CONCLUSION:The hypertension,CHD,diabetes mellitus and COPD were the main reasons of complications of the heart,the cerebral vessels and the lung,kidney and the incision bleeding in perioperative period of senile patients.
基金Supported by the Shenzhen Key Laboratory of Control Theory and Intelligent Systems (ZDSYS20220330161800001)the National Natural Science Foundation of China (62303207)the Guangdong Basic and Applied Basic Research Foundation (2024A1515010725)。
文摘This paper studies cooperative robust parallel operation of multiple actuators over an undirected communication graph.The plant is modeled as an uncertain linear system,and the actuators are linear and identical.Based on the internal model principle,a distributed dynamic output feedback control law is proposed to achieve both robust output regulation of the closed-loop system and plant input sharing among the actuators.A practical example of five motors cooperatively driving an uncertain shaft under an external load torque is presented to show the effectiveness of the proposed control law.
基金support of the“Pioneer”and“Leading Goose”Research&Development Program of Zhejiang(2024C01028)the State Key Laboratory of Industrial Control Technology,China(ICT2024C04)are gratefully acknowledged.
文摘Digital twin technology brings more opportunities and challenges to chemical engineering in both academic and industry.A complex process could have multiple digitalization needs,including simulation,monitoring,operator training,etc.;thus,a hierarchical digital twin would be a comprehensive solution to that.In this study,a novel and general framework of the digital twin is proposed for operations in process industry.With the hierarchical structure,the framework can handle various tasks driven by different roles in process industry,including managers,engineers,and operators.To complete these tasks,the framework consists of three modules:OAS(Operation Analysis System),OMS(Operation Monitoring System),and OTS(Operator Training System).Each module focuses on one unique type of demand from the staff,as well as interactions among them enabling efficient data sharing.Based on the hierarchical framework,a digital twin system is applied for one complex industrial nitration process,which successfully enhances the operation efficiency and safety in several industrial scenarios with different demands.
文摘Liver transplantation is a life-saving procedure for patients with end-stage liver diseases and acute liver failure.With advances in surgical techniques and immunosuppressive regimens,patient survival rates have significantly improved.While the systemic complications of post-transplantation are well recognized,ophthalmic manifestations remain underreported.Ophthalmic complications can significantly impair visual function and increase morbidity in these patients.Prolonged immunosuppression makes the patients susceptible to the opportunistic pathogens such as Cytomegalovirus,Candida,Aspergillus,etc.Other common findings include dry eye disease,cataracts and retinal vascular complications which further contribute to the long-term morbidity in these patients.Early ophthalmic evaluation and prompt management are essential to prevent irreversible vision loss and improve post-transplant outcomes.High index of suspicion and multidisciplinary approach is essential to facilitate early diagnosis and treatment.This review highlights the range of ophthalmic complications observed in liver transplant recipients and underscores the need for future research focused on understanding the underlying pathophysiological mechanisms and refining the prophylactic protocols to improve outcomes in this unique patient population.
文摘Objective:To explore the clinical effect of personalized nutritional support in elderly women with gestational diabetes(GDM),and explore its impact on the incidence of maternal complications and pregnancy outcomes.Methods:A total of 90 elderly pregnant women with gestational diabetes who were delivered in our hospital from January 2023 to January 2024 were selected as the research objects.They were randomly divided into an observation group and a control group,with 45 cases in each group.The control group only received routine pregnancy care and basic nutrition guidance,while the observation group received personalized nutrition support on this basis.Compare the blood glucose control,incidence of pregnancy complications,pregnancy outcomes,and neonatal outcomes between two groups of parturient.Result:After intervention,the fasting blood glucose(FPG),2-hour postprandial blood glucose(2hPG),and glycated hemoglobin(HbA1c)of the observation group were significantly lower than those of the control group,and the differences were statistically significant(p<0.05);The incidence of complications such as gestational hypertension syndrome,polyhydramnios,premature rupture of membranes,and postpartum hemorrhage in the observation group was significantly lower than that in the control group,and the difference was statistically significant(p<0.05);The cesarean section rate in the observation group was significantly lower than that in the control group,and the incidence of adverse neonatal outcomes such as fetal distress,macrosomia,neonatal asphyxia,and neonatal hypoglycemia in the observation group was significantly lower than that in the control group,with statistical significance(p<0.05).Conclusion:Individualized nutritional support for elderly women with gestational diabetes can effectively improve the level of maternal blood sugar control,reduce the incidence of complications during pregnancy,and improve the outcome of pregnancy and neonatal outcomes,which is of high clinical value.
文摘BACKGROUND Elderly patients with colorectal cancer(CRC)can judge the risk of postoperative complications and oncological outcomes due to visceral obesity,which can provide data reference for the early prediction of prognosis.AIM To explore the effect of visceral obesity on postoperative complications and oncological outcomes in elderly patients with CRC.METHODS A total of 150 elderly patients who underwent radical surgery for CRC at Inner Mongolia Medical University and Inner Mongolia Autonomous Region People’s Hospital from January 2021 to June 2024 were retrospectively analyzed.Patients were divided into the abdominal[visceral fat area(VFA)≥100.00 cm^(2),n=80]and non-abdominal(VFA<100.00 cm^(2),n=70)obesity groups according to the VFA measured by preoperative computed tomography.The two groups showed no significant differences in age,sex,tumor location,tumor-node-metastasis stage,and underlying disease(P>0.05).All patients underwent standardized laparoscopic assisted surgery and received unified perioperative management.Complications,nutritional status,changes in biochemical indicators,and tumor recurrence and metastasis were evaluated postoperatively.RESULTS The overall incidence of postoperative complications was significantly higher in the abdominal obesity group than in the non-abdominal obesity group(P<0.05).The pulmonary infection on postoperative day(POD)3(P=0.038),anastomotic leakage on POD 7(P=0.042),and moderate-to-severe complications(Clavien-Dindo class III,P=0.03)were significantly different.With respect to biochemical indicators,the white blood cell count,neutrophil percentage,and C-reactive protein level in the abdominal obesity group continuously increased after surgery(P<0.05);the albumin level on POD 1 was even lower(P=0.024).Regarding tumor markers,carcinoembryonic antigen(P=0.039)and carbohydrate antigen 19-9(P=0.048)levels were significantly higher in the abdominal obesity group at 3 months after surgery,and local recurrence rates were higher than those in the non-abdominal obesity group at 30 days and 3 months after surgery(P<0.05).Abdominal obesity was an independent risk factor for postoperative complications(odds ratio:3.843,P=0.001),overall survival[hazard ratio(HR):1.937,P=0.011],and disease-free survival(HR:1.769,P=0.018).CONCLUSION Visceral obesity significantly increases the risk of postoperative complications in elderly patients with CRC and may adversely affect short-term tumor prognosis.Preoperative risk identification and interventions for abdominal obesity should be strengthened to improve perioperative safety and postoperative rehabilitation quality.
基金Project supported by the National Natural Science Foundation of China(Grant No.61573266)the Natural Science Basic Research Program of Shaanxi(Grant No.2021JM-133)the Fundamental Research Funds for the Central Universities and the Innovation Fund of Xidian University(Grant No.YJSJ25009)。
文摘Efficient implementation of fundamental matrix operations on quantum computers,such as matrix products and Hadamard operations,holds significant potential for accelerating machine learning algorithms.A critical prerequisite for quantum implementations is the effective encoding of classical data into quantum states.We propose two quantum computing frameworks for preparing the distinct encoded states corresponding to matrix operations,including the matrix product,matrix sum,matrix Hadamard product and division.Quantum algorithms based on the digital encoding computing framework are capable of implementing the matrix Hadamard operation with a time complexity of O(poly log(mn/ε))and the matrix product with a time complexity of O(poly log(mnl/ε)),achieving an exponential speedup in contrast to the classical methods of O(mn)and O(mnl).Quantum algorithms based on the analog-encoding framework are capable of implementing the matrix Hadamard operation with a time complexity of O(k_(1)√mn·poly log(mn/ε))and the matrix product with a time complexity of O(k_(2)√1·poly log(mnl/ε)),where k_(1)and k_(2)are coefficients correlated with the elements of the matrix,achieving a square speedup in contrast to the classical counterparts.As applications,we construct an oracle that can access the trace of a matrix within logarithmic time,and propose several algorithms to respectively estimate the trace of a matrix,the trace of the product of two matrices,and the trace inner product of two matrices within logarithmic time.
文摘Objective:To explore the therapeutic effect of double-puncture tympanic membrane puncture and tympanic cavity drug injection in patients with acute secretory otitis media.Methods:A total of 84 patients with acute secretory otitis media admitted to our hospital from June 2024 to June 2025 were selected and randomly divided into two groups by drawing lots.The control group(42 cases)was treated with the traditional single-puncture tympanic membrane puncture and tympanic cavity drug injection method,while the observation group(42 cases)was treated with the double-puncture tympanic membrane puncture and tympanic cavity drug injection method.The therapeutic effects of the two groups were compared.Results:The overall treatment response rate,overall complication rate,time to symptom relief,and improvement in hearing threshold in the observation group were all superior to those in the control group,with statistically significant differences(P<0.05).Conclusion:For acute secretory otitis media,the treatment method of double-puncture tympanic membrane puncture and tympanic cavity drug injection demonstrates definite efficacy,significantly reducing the incidence of complications,accelerating symptom relief,and improving hearing function,making it worthy of promotion.
基金Jiangsu Provincial College Student Innovation and Entrepreneurship Program(Grant No.SJCX25_2184)—“Multi-energy Complementary Optimization and Vehicle-Storage Bidirectional Interaction Technology Driven by Novel 5E Framework”(Principal Investigator:Yuan-Yuan ShiFunding Agency:Jiangsu Provincial Education Department)+3 种基金Huaian Natural Science Research Project(Grant No.HAB2024046)—“Optimal Control of Flexible Cold-Heat-Power Integrated System with Source-Grid-Load-Storage Coordination”(Principal Investigator:Jie JiFunding Agency:Huaian Science and Technology Bureau)Huaiyin Institute of TechnologyUniversity-funded Project(GrantNo.HGYK202511)—“Data-driven CooperativeOptimization Dispatch for Source-Grid-Load Systems”(Principal Investigator:Chu-Tong ZhangFunding Agency:Huaiyin Institute of Technology).
文摘In order to solve the problems of slow dynamic response and difficult multi-source coordination of solar electric vehicle charging stations under intermittent renewable energy,this paper proposes a hardware-algorithm co-design framework:the T-type three-level bidirectional converter(100 kHz switching frequency)based on silicon carbide(SiC)MOSFET is deeply integrated with fuzzy model predictive control(Fuzzy-MPC).At the hardware level,the switching trajectory and resonance suppression circuit(attenuation resonance peak 18 dB)are optimized,and the total loss is reduced by 23%compared with the traditional silicon-based IGBT.At the algorithm level,the adaptive parameter update mechanism and multi-objective rolling optimization are adopted,and the 5 ms level dynamic power allocation is realized by relying on edge computing.Experiments on 800 V DC microgrid(including 600 kW photovoltaic and 150 A·h energy storage)built based on MATLAB/Simulink hardware-in-the-loop(HIL)platform show that the system shortens the battery charging time from 42 to 28 min(the charging speed is increased by 33%).Through the 78%valley power utilization rate,the power purchase cost of high-priced power grids was significantly reduced,and the levelized electricity price decreased by 10.3%;Under the irradiation fluctuation,the renewable energy consumption rate increases by 10.1%,and the DC bus voltage fluctuation is stable within±10 V when the load step is±30%.The co-design provides an economically feasible and dynamically robust solution for the efficient integration of PV-ESG-EV in the smart grid.
基金supported by the National Key Research and Development Program of China(No.2022YFB4300902).
文摘As joint operations have become a key trend in modern military development,unmanned aerial vehicles(UAVs)play an increasingly important role in enhancing the intelligence and responsiveness of combat systems.However,the heterogeneity of aircraft,partial observability,and dynamic uncertainty in operational airspace pose significant challenges to autonomous collision avoidance using traditional methods.To address these issues,this paper proposes an adaptive collision avoidance approach for UAVs based on deep reinforcement learning.First,a unified uncertainty model incorporating dynamic wind fields is constructed to capture the complexity of joint operational environments.Then,to effectively handle the heterogeneity between manned and unmanned aircraft and the limitations of dynamic observations,a sector-based partial observation mechanism is designed.A Dynamic Threat Prioritization Assessment algorithm is also proposed to evaluate potential collision threats from multiple dimensions,including time to closest approach,minimum separation distance,and aircraft type.Furthermore,a Hierarchical Prioritized Experience Replay(HPER)mechanism is introduced,which classifies experience samples into high,medium,and low priority levels to preferentially sample critical experiences,thereby improving learning efficiency and accelerating policy convergence.Simulation results show that the proposed HPER-D3QN algorithm outperforms existing methods in terms of learning speed,environmental adaptability,and robustness,significantly enhancing collision avoidance performance and convergence rate.Finally,transfer experiments on a high-fidelity battlefield airspace simulation platform validate the proposed method's deployment potential and practical applicability in complex,real-world joint operational scenarios.
文摘For ordinary tourists, simpler entry and exit procedures and a broader range of duty-free goods in Hainan create a better travel and shopping experience.For China’s earnest endeavor to deepen reform and opening-up, implementation of the special customs operations policy in Hainan represents a significant step forward. For businesses in Malaysia and other ASEAN member states, especially export-oriented small and medium-sized enterprises (SMEs), Hainan serves as a“transit hub” for accessing the Chinese market and even other Asian markets.
文摘With the gradual implementation of a series of institutional arrangements, H ainan is becoming a new hot spot for global investment and an ideal destination for starting businesses and developing industry. While attracting foreign investment projects, it is also creating more favorable conditions for local enterprises to expand into international markets.
文摘At 11:00 p.m. on January 13, 2026, floodlights illuminated the launch pad at the Hainan Commercial Space Launch Site in Wenchang,south China’s Hainan Province. A Long March-8A (CZ-8A) carrier rocket lifted off with a steady roar, its exhaust lighting up the night sky as it delivered a satellite into its designated orbit.The development of China’s first commercial space launch site has been striking. Since its inaugural launch in2024, it has completed 11 missions in less than 14 months—each a success.
文摘THE Hainan Free Trade Port(FTP)officially launched island-wide special customs operations on December 18,2025.One month in,a reporting team from China International Communications Group(CICG)conducted an exclusive interview with Feng Fei,secretary of the Hainan Provincial Committee of the Communist Party of China(CPC)and chairman of the Standing Committee of the Hainan Provincial People’s Congress.
基金Supported by the Science and Technology Program of Guizhou Province(Grant No.QKHJC QN[2025]362)the National Natural Science Foundation of China(Grant No.12361005).
文摘Loday introduced di-associative algebras and tri-associative algebras motivated by periodicity phenomena in algebraic K-theory.The purpose of this paper is to study the splittings of operations on di-associative algebras and tri-associative algebras.We introduce the notion of a quad-dendriform algebra,which is a splitting of a di-associative algebra.We show that a relative averaging operator on dendriform algebras gives rise to a quad-dendriform algebra.Furthermore,we introduce the notion of six-dendriform algebras,which are splittings of the tri-associative algebras,and demonstrate that homomorphic relative averaging operators induce six-dendriform algebras.
文摘AIM:To investigate the occurrence of postoperative complications of gastric cancer surgery,and analyze the potential causes of reoperation for early postoperative complications. METHODS:A total of 1639 patients who underwent radical or palliative gastrectomies for gastric cancer were included in the study.The study endpoint was the analysis of postoperative complications in inpatients. RESULTS:About 31%of patients had early postoperative complications,and complications of infection occurred most frequently.Intra-abdominal hemorrhage and anastomotic leak were the main causes of reoperation,which accounted for about 2.2%.Mortality was 11.1%in the reoperation group,but was only 0.8%in other patients.The duration of postoperative stay in hospital was significantly longer and the total expenditure was markedly higher in the patients who underwent reoperation(P<0.001).There was no significant association of any available factors in this study with the high rate of reoperation.CONCLUSION:Reoperation significantly increases the mortality rate and raises the burden of the surgical unit.More prospective studies are required to explore the potential risk factors.
文摘Background: In children, acute bacterial rhinosinusitis (ABRS) is often complicated by ophthalmological and/or neurological involvement. These complications should be known and recognized, as they require urgent treatment with intravenous antibiotics and close in-hospital monitoring. In this study, we aimed to identify the main risk factors associated with the development of complications in children aged 2 - 17 years with ABRS. Methods: We conducted a retrospective cohort study of patients with ABRS complications in a primary hospital. Participants were divided into two groups: the control group comprising patients without complications (Group 1, n = 82) and the study group comprising patients with complications requiring hospitalization (Group 2, n = 41). We assessed the sociodemographic, clinical, and imaging data of both groups. Using multivariate logistic regression, we assessed risk factors of ABRS complications. Results: No socio-demographic characteristics were associated with ABRS complications (p ≥ 0.05). Factors associated with complications were delay in consultation (t = 5.282;p Conclusions: Intracranial and extracranial complications of ABRS in children have become rare in our setting. These complications can be serious and potentially fatal. Risk factors of these complications are delays in consultation, the presence of ophthalmological signs, and more than one affected sinus. Controlling modifiable factors would improve the treatment success of ABRS complications in children.
