Comparative experimental analysis on various picking types under dedicated and random storage assignments for automated storage and retrieval systems

Product storage policy, single picking volume and picking routing are the three factors of vital importance that affect the efficiency of a crane to pick goods in automated storage and retrieval systems(AS/RS). Comparative experiments on picking efficiency were conducted targeting picking operation with order of 1 to 20. Based on dedicated and random storage policies, 4 picking methods of patching-based, S-type, return-type and optimized-type routes were used and compared in the experiments. The results show that either the dedicated policy or the random policy was applied, crane worked most efficiently with optimizedtype route, followed by S-type path, patching-based path, and return-type path. When the number of orders in a single picking is larger(more than 5), the random storage policy is preferable to the dedicated policy.

A Coordination-Based Algorithm for Dedicated Destination Vehicle Routing in B2B E-Commerce

This paper proposes a solution to the open vehicle routing problem with time windows(OVRPTW)considering third-party logistics(3PL).For the typical OVRPTW problem,most researchers consider time windows,capacity,routing limitations,vehicle destination,etc.Most researchers who previously investigated this problem assumed the vehicle would not return to the depot,but did not consider its final destination.However,by considering 3PL in the B2B e-commerce,the vehicle is required back to the nearest 3PL location with available space.This paper formulates the problem as a mixed integer linear programming(MILP)model with the objective of minimizing the total travel distance.A coordinate representation particle swarm optimization(CRPSO)algorithm is developed to obtain the best delivery sequencing and the capacity of each vehicle.Results of the computational study show that the proposed method provides solution within a reasonable amount of time.Finally,the result compared to PSO also indicates that the CRPSO is effective.

A systematic review of dedicated models of care for emergency urological patients

Objective:To systematically evaluate the spectrum of models providing dedicated resources for emergency urological patients(EUPs).Methods:A search of Cochrane,Embase,Medline and grey literature from January 1,2000 to March 26,2019 was performed using methods pre-published on PROSPERO.Reporting followed Preferred Reporting Items for Systematic Review and meta-analysis guidelines.Eligible studies were articles or abstracts published in English describing dedicated models of care for EUPs,which reported at least one secondary outcome.Studies were excluded if they examined pathways dedicated only to single presentations,such as torsion,or outpatient solutions,such as rapid access clinics.The primary outcome was the spectrum of models.Secondary outcomes were time-to-theatre,length of stay,complications and cost.Results:Seven studies were identified,totalling 487 patients.Six studies were conference abstracts,while one study was of full-text length but published in grey literature.Four distinct models were described.These included consultant urologists allocated solely to the care of EUPs(“Acute Urological Unit”)or dedicated registrars or operating theatres(“Hybrid structures”).In some services,EUPs bypassed emergency department assessment and were referred directly to urology(“Urological Assessment Unit”)or were managed by other dedicated means.Allocating services to EUPs was associated with reduced time-to-theatre,length of stay and hospital cost,and improved supervision of junior medical staff.Conclusion:Multiple dedicated models of care exist for EUPs.Low-level evidence suggests these may improve outcomes for patients,staff and hospitals.Higher quality studies are required to explore patient outcomes and minimum requirements to establish these models.

Rational Cost Estimation of Dedicated Software Systems

Dedicated software systems hold a character of individual solutions that entail particular problems with regard to their cost estimation. Thus for many years now objective and reliable approaches to the cost estimation of such systems have been sought out so that they could provide the possibility to make rational investment decisions concerning those systems. The purpose of this paper is to bring in the approach to cost estimation of dedicated software systems that has been recently growing in global popularity, using it as a background for presenting conclusions resulting from practical verification of author’s own model of dedicated software system cost estimation based on that approach.

Evaluating Dedicated Slices of Different Configurations in 5G Core

Network slicing is one of the most important concepts in 5G networks. It is enabled by the Network Function Virtualization (NFV) technology to allow a set of Virtual Network Functions (VNFs) to be interconnected to form a Network Service (NS). When network slices are created in 5G, some are shared among different 5G services while the others are dedicated to specific 5G services. The latter are called dedicated slices. Dedicated slices can be constructed with different configurations. In this research, dedicated slices of different configurations in 5G Core were evaluated in order to discover which one would perform better than the others. The performance of three systems would be compared: 1) Free5GC Stage 2 with each dedicated slice consisting of only UPF;2) Free5GC Stage 3 with each dedicated slice consisting of only UPF;3) Free5GC Stage 3 with each dedicated slice consisting of both SMF and UPF in terms of their registration time, response time, throughput, resource cost, and CPU utilization. It is shown that not one of the above systems will always be the best choice;based on the requirements, a specific system may be the best under a specific situation.

Dedicated Magnetic Resonance Imaging Sequences:Contribution in the Diagnosis of Focal Epilepsy in the Lebanese Population

There have been many advances in the diagnosis and management of focal epilepsies particularly with neuroimaging techniques and magnetic resonance imaging(MRI).Special MRI sequences can be employed to localize and resect the epileptogenic lesions responsible for focal epilepsy.This study aims to show the benefit of dedicated epilepsy MRI sequences in the diagnosis of focal epilepsies.A general electric 1.5 Tesla MRI machine was used with standard and special sequences.Also,a Nihon Kohden electroencephalography(EEG)machine was used.This is a prospective observational study that included 51 patients with focal epilepsies who had an initial negative brain imaging.They underwent epilepsy MRI sequences along with a prolonged video EEG monitoring to localize the lesion,and then results were analyzed statistically using SPSS 22 program.The majority of patients were males(62.75%)with a mean age of 30 years.The grand majority of patients(74.5%,p value of 0.001)had their lesion localized by the epilepsy MRI.The most commonly found pathology was mesial temporal sclerosis.A significant number of patients(23.5%)were sent for an epilepsy surgery(p value 0.002).This study shows the significant impact of dedicated epilepsy MRI sequences on the diagnosis and management of focal epilepsy in the Lebanese population.

The Pattern of Neurological Disorders;Revisited Prevalence Data of a Dedicated Neurology Clinic in Sudan

Background: The diverse modes in geographical locations, environmental factors, genetic and racial characteristics play a complex role in determining the pattern of neurological disorders worldwide. Determining the pattern of neurological disorders enables health policymakers to plan evidently for service, training, and research priorities. Few prevalence studies in neurology were conducted in Sudan. Methods: This is a retrospective hospital-based study that reviewed the medical records of patients who attended a Dedicated Neurology Clinic (DNC) in Omdurman, the national Capital of Sudan, for 24 months, from January 2016 to January 2018. This study aimed to determine the DNC pattern of neurological disorders as a representative subset prevalence in Sudan. Neurologists conducted the medical workup for diagnosis after at least two visits. All patients have ethically consented. Results: The total number of patients was 1050. Only 749 patients (71.3%) fulfilled the inclusion criteria. The mean age was 46.5 ± 1.9, and males were 45.3%. 72% were from the Capital. The presenting symptoms were headache (16.6%), seizures (11.5%), limbs weakness (11.2%), and lower percentages for other neurological symptoms. The commonest diagnoses were Stroke 12.4%, Epilepsy 9.3%, Primary Headache 8.8%, Movement Disorders 7.3%, Peripheral Neuropathy 6%, Dementia 4% Neuroinfections 1.4%, Demyelinating Disorders 2.6%, Spinal Spondylotic Radiculopathy 2.6% and 1.7% for Cerebral Venous Thrombosis. Conclusion: The data from Sudan-DNC showed that the most common neurological disorders descendingly were Stroke, Epilepsy, Headache, Movement Disorders, Peripheral Neuropathy, Dementia, Infections, Demyelinating Disorders, Spinal Spondylotic Radiculopathy, and Cerebral Venous Thrombosis. The demyelinating disorders and peripheral neuropathy showed a higher percentage than our previous preliminary prevalence study in 2012 compared to the other conditions, which showed similar rates in that study.

The analysis of structural complexity of Piano Pieces ＂dedicated to Alice＂

Beethoven is a famous German pianist, composer, and conductor, and he set the culmination of Western classical, created a romantic music camp precedent. The size of his music in general is very ambitious, mostly concertos, symphonies, operas and other large works, technical approach and structure used is quite complex, people are left with a deep impression. But it works, while small piano pieces, also has music research value, ＂dedicated to Alice＂ is one of the few Beethoven piano pieces. This paper focuses on creative background ＂dedicated to Alice,＂ this elaborate piano works by the complexity of the analysis of the structure of this work is that it reflects the author＇ s ideological soul to explore their musical value.

Analysis of Non-Selective Catalyst Reduction Performance with Dedicated Exhaust Gas Recirculation

Rich burn industrial natural gas engines offer best in class post catalyst emissions by using a non-selective catalyst reduction aftertreatment technology. However, they operate with reduced power density when compared to lean burn engines. Dedicated exhaust gas recirculation (EGR) offers a possible pathway for rich burn engines to use non-selective catalyst reduction aftertreatment technology without sacrificing power density. In order to achieve best in class post catalyst emissions, the precious metals and washcoat of a non-selective catalyst must be designed according to the expected exhaust composition of an engine. In this work, a rich burn industrial natural gas engine operating with dedicated EGR was paired with a commercially available non-selective catalyst. At rated brake mean effective pressure (BMEP) the air-fuel ratio was swept between rich and lean conditions to compare the catalyst reduction efficiency and post catalyst emissions of rich burn and dedicated EGR combustion. It was found that due to low oxides of nitrogen (NOx) emissions across the entire air-fuel ratio range, dedicated EGR offers a much larger range of air-fuel ratios where low regulated emissions can be met. Low engine out NOx also points towards a possibility of using an oxidation catalyst rather than a non-selective catalyst for dedicated EGR applications. The location of the NOx-CO tradeoff was shifted to more rich conditions using dedicated EGR.

Su Moying -a Woman Teacher Dedicated to the Countryside

SU Moying, of Sheke Village, S h e k e To w n s h i p , Lanxian County, Shanxi Province, has been teaching in the countryside for 20 of her 48 years. She

A Portable Multi-functional Real-time Digital Simulator Dedicated to Protective Relay Testing

The paper intfoduces a PC-DSP based real-time digital simulator which is portable in size and aimed at the closed-loop testing of various types of protective relays for their design and application. The simulator can be widely used in not only concerning utilities but also manufacturers and research / certification institutes because of its many functions. The hardware architecture and software implementation of the simulator are described. The main features and functions of the simulator are also

DecodeSTORM:A user-friendly ImageJ plug-in for quantitative data analysis in single-molecule localization microscopy

Quantitative data analysis in single-molecule localization microscopy(SMLM)is crucial for studying cellular functions at the biomolecular level.In the past decade,several quantitative methods were developed for analyzing SMLM data;however,imaging artifacts in SMLM experiments reduce the accuracy of these methods,and these methods were seldom designed as user-friendly tools.Researchers are now trying to overcome these di±culties by developing easyto-use SMLM data analysis software for certain image analysis tasks.But,this kind of software did not pay su±cient attention to the impact of imaging artifacts on the analysis accuracy,and usually contained only one type of analysis task.Therefore,users are still facing di±culties when they want to have the combined use of different types of analysis methods according to the characteristics of their data and their own needs.In this paper,we report an ImageJ plug-in called DecodeSTORM,which not only has a simple GUI for human–computer interaction,but also combines artifact correction with several quantitative analysis methods.DecodeSTORM includes format conversion,channel registration,artifact correction(drift correction and localization¯ltering),quantitative analysis(segmentation and clustering,spatial distribution statistics and colocalization)and visualization.Importantly,these data analysis methods can be combined freely,thus improving the accuracy of quantitative analysis and allowing users to have an optimal combination of methods.We believe DecodeSTORM is a user-friendly and powerful ImageJ plug-in,which provides an easy and accurate data analysis tool for adventurous biologists who are looking for new imaging tools for studying important questions in cell biology.

A Dedicated Gardener for the Blossoming of Sino-German S&T Cooperation——In Memory of Prof. Uli Schwarz

On the afternoon of 21 December, 2006, Uli Schwarz, professor emeritus of the German Max Planck Society (MPG) and founding director of the CAS Shanghai Institute for Advanced Stud-

中国混合动力汽车动力总成技术进展

在国家政策与市场需求的双重驱动下,2021年以来,中国品牌混合动力汽车动力总成技术实现突破,围绕中国市场特点与消费者用车习惯推出一批具有中国特色、世界范围内领先的混合动力汽车产品。近期混合动力汽车市场销量呈爆发式增长,2023年中国市场混合动力乘用车销售超300万辆,同比增长83%。然而,受近年来汽车领域电动化浪潮影响,行业内尚存关于混合动力汽车仅为过渡性技术的观点,部分消费者对国产混动汽车技术产品力仍存质疑。为纠正对混合动力汽车的片面性、偏见性认识,该文围绕中国混合动力汽车动力总成技术路线展开,聚焦多样化的混动架构与专用化的核心部件,提出新的混合度定义作为动力总成电气化程度的统一评价标准,探讨国内外主流混动技术异同,剖析当下中国最前沿的混动技术特点与发展趋势,厘清中国混动汽车动力总成的发展脉络。研究表明:中国式混动汽车以大容量动力电池与插电式混合动力为技术特色,实现发动机、电机两大驱动动力源以及动力电池、增程系统两大动力能量源的灵活混合与优势互补。与纯内燃机车相比,得益于电驱动技术辅助,混合动力汽车聚焦提高发动机热效率、发动机高效区利用率以及整车燃油经济性。与纯电动车相比,混合动力汽车则基于发动机的增程发电,以高性价比和高便利度解决纯电动车的补能焦虑;并通过结合发动机直驱、变速器动力放大等机械驱动技术,以更低的硬件成本实现更稳定的强劲动力输出。混合动力汽车的独特优势使其作为长期性技术路线,将成为带动汽车产业向碳中和方向转型升级的关键,该文对当下市场的深度分析和未来趋势的理性推测将为中国混动技术的进一步发展提供有益参考。

新时代大学生弘扬奉献精神的实践路径研究

党的二十大报告引领新阶段新使命新方向,召唤新时代青年敢担当、有作为。奉献精神是共产党人精神谱系中的重要组成部分,伴随党走过百年历程,促使一代又一代有志青年为民族独立、国家富强和人民幸福不懈努力。新时代大学生是完成新阶段新使命新任务的人才后备军,培育新时代大学生奉献精神为全面建设社会主义现代化强国提供精神动力。让奉献和服务成为新时代大学生普遍认可并不懈践行的人生追求,面临诸多挑战。发挥大学生的主观能动性,使其真正认可并践行奉献精神,积极创造各种实践性条件让大学生“外化”奉献精神,为高校培育大学生奉献精神提供新思路。

西南山区铁路客运专线隧道底鼓病害变形监测研究

西南山区铁路客运专线具有高桥隧比、沿线地质条件复杂恶劣等特征,在建设和运营过程中易出现各类工程病害。文章基于某隧道底鼓变形病害,设计并开展包含围岩变形、仰拱受力和道床板沉降变形3个监测指标的隧道变形监测方案。通过对监测数据进行分析,获取隧道和围岩受力变形的演化规律,据此提出后续加密轨道几何形位静态、动态检测和衬砌结构贯通裂缝观测、实施列车降速运行等处理措施。相关研究可为该客运专线的安全运营提供有力保障,同时为类似工程隧道病害的监测和整治工作提供有益参考。