bluuebunny/crossref_metadata_2025 huggingface dataset:
Therapeutische Fertigkeiten – Relevanz für Ausbildung, Praxis und Forschung
Authors: Möllmann Anne , Schöttke Henning
Published: November 2019

Therapeutische Fertigkeiten sind für den psychotherapeutischen Alltag essenziell. Ein einheitliches Verständnis dafür, was dieser Begriff beinhaltet und wie man diese Fertigkeiten systematisch erfasst, erwirbt oder erweitert besteht unter PsychotherapeutInnen in der Versorgung und Forschung jedoch nicht. Darin liegt Potenzial für die Verbesserung der Therapeutenausbildung und der Wirksamkeit von Therapien.
Kompetenzentwicklung in der Psychotherapieausbildung
Authors: Evers Oliver , Taubner Svenja
Published: November 2019

Mit der Reform des Psychotherapeutengesetzes soll die Psychotherapieausbildung kompetenzorientiert ausgerichtet sein. Doch was bedeutet eigentlich der Kompetenzbegriff in der Psychotherapie? Welche Kompetenzen sollten in der Ausbildung gefördert werden und wie kann das gelingen? Im Artikel werden diese Fragen im Licht aktueller Ergebnisse der Psychotherapieausbildungsforschung betrachtet.
Mit Spannungen und Krisen in der Therapiebeziehung kompetent(er) umgehen
Authors: Gumz Antje
Published: November 2019

Minimale Spannungen oder größere Krisen in der therapeutischen Beziehung ereignen sich häufig. Ein gelungener Umgang mit ihnen ist ein zentraler Wirkmechanismus von Psychotherapie und eine Voraussetzung für den Therapieerfolg. Therapeuten fällt es jedoch häufig schwer, eine Spannung ausreichend wahrzunehmen und konstruktiv zu besprechen. Oft setzen sie das Verstricktsein in ein schwieriges Beziehungsmuster fälschlicherweise gleich mit therapeutischer Inkompetenz.
Präklinische Versorgung des Polytraumas
Authors: Oramary Delovan , Al-Sadi Onays , Blum Sophia , Schaser Klaus Dieter , Kleber Christian
Published: November 2019

Das Polytrauma stellt eine der führenden Todesursachen des jungen Menschen dar. Im Rahmen des Managements mit Zielsetzung der weiteren Verbesserung des Überlebens rückt zunehmend die Präklinik in den Fokus. Zudem besteht ein Spannungsfeld aus Notwendigkeit von Erfahrung und manuellen Fähigkeiten mit invasiven Rettungstechniken einerseits und mangelnder Erfahrung und Ausbildung andererseits. Im folgenden Artikel werden aktuelle Leitlinien und Algorithmen zur präklinischen Versorgung des Polytraumas vorgestellt, diskutiert und praktische Handlungsempfehlung zum präklinischen Management gegeben.
Liebe Leserin, lieber Leser
Authors: Altorfer-Lange Birgit
Published: November 2019

In der wohl berechtigten Annahme, dass Sie mit Balintarbeit vertraut sind,
möchte ich Ihnen vorschlagen, die Artikel dieses Hefts mit Offenheit und
Staunen zu lesen. Und sie wie eine Balintgeschichte auf sich wirken zu lassen.
Total Gluteal Reconstruction with “IGA-based V–Y Myocutaneous Advancement Flap”
Authors: Vathulya Madhubari , Nath Amborish , Jain Manish , Seenivasagam Rajkumar Kottayasamy
Published: November 2019

Introduction A 44-year-old man was presented with chronic discharging multiple perianal fistula and squamous cell carcinoma of the left buttock.

Report The patient was subjected to wide local excision of the entire left gluteal and adjacent sacral regions and reconstruction with extended island inferior gluteal artery based V–Y myocutaneous advancement flap.

Result and Conclusion Extended island inferior gluteal based V–Y flap can be a good option for extensive defects involving the gluteal region and the sacrum.
Cerebral Insufficiency Caused by Diazoxide in a Premature Neonate with Congenital Hyperinsulinism
Authors: Fukunaga Shinnosuke , Okada Seigo , Ohta Haruka , Furuta Takashi , Hirano Reiji , Motonaga Takahiro , Ishikawa Yuichi
Published: November 2019

Diazoxide is a peripheral vasodilator that has been used for intravenous treatment of hypertensive emergencies. However, it is currently used mainly for hyperinsulinemic hypoglycemia in lower dose orally, and its major side effects are edema and pulmonary hypertension. Herein, we report the first association between periventricular leukomalacia (PVL) and intractable hypotension due to diazoxide. A Japanese female premature infant showed hypoglycemia concomitant with hyperinsulinemia. She was diagnosed with congenital hyperinsulinism, and oral diazoxide was started. Six days after starting diazoxide, she suddenly showed peripheral coldness, oliguria, and severe hypotension. The hypotension was refractory to general vasopressor therapies and persisted even after the discontinuation of diazoxide. Cranial echography showed periventricular echodensities followed by cystic PVL. Low-dose vasopressin effectively treated the hypotension. This single case reminds us the serious adverse events of diazoxide that have been forgotten, especially in premature neonates.
Morphological study of the hypoglossal and lingual nerves
Authors: Rie Shimotakahara , Lee Hyeyong , Nishimoto Daisaku , Ogata Shigemitsu
Published: November 2019

Background and objectives: In treatment of dental conditions and dental anaesthesiology, a thorough understaoding of course, directions and distribution of nerves and blood vessels supplying the tongue is extremely important. However, the morphology of the nerves supplying the tongue has not yet been fully understood. We applied comparative anatomical approach in order to observe innervation of the tongue in detail, with the focus on the distribution of the lingual nerves and its communication with the hypoglossal nerve. Material and methods: Ten adult human tongues with no grossly detectable abnormalities that were resected from cadavers donated for anatomical study and five monkey tongues were used. Specimens were immersed in water and dissected under a stereomicroscope, and gross examination of the morphology and directions of branches of the hypoglossal and lingual nerves, communicating branches between these two nerves, and their connection status was done. Observations: All branches shared common morphological characteristics: branches near the root of the tongue were relatively straight, while they meandered and formed loops nearer to the apex of tongue. In addition to the branch on the anterior muscle bundle of the hyoglossus muscle, which could be easily observed, there were two more communicating points (total of three communicating branches in both humans and Japanese macaques: in the inner part of the genioglossus muscle and the apex of the tongue). Conclusions: The levels of communicating nerve complexity between the hypoglossal nerve and the lingual nerve and the thickness of nerve fibers varied among individual subjects, but there was a common three-site communication pattern.
Unilateral rectus sternalis muscle - a case report
Authors: Nair Smitha S , Jayasree K , PR Ashalatha , Joy Jenish
Published: November 2019

Rectus sternalis muscle, either unilateral or bilateral is an uncommon anatomical variant among the anterior chest wall muscles. During the routine dissection as a part of undergraduate medical teaching in the department of Anatomy, a unilateral rectus sternalis muscle was noticed on the right hemi thorax in one cadaver, located adjacent to the sternum between the pectoralis major muscle and the superficial fascia of the region. Though rare in occurrence, when present, rectus sternalis muscle demands proper awareness and attention by the clinicians especially radiologists and surgeons, as the ignorance of the existence of this muscle may lead to misinterpretation, incorrect diagnosis and unnecessary clinical interventions. Such anatomical variations should be borne in mind while doing radiological investigations, radiotherapy and surgical procedures in the chest region.
Topography of diaphyseal nutrient foramina of femora and their implications in bone grafting
Authors: Kamath Venkatesh , Bhat Shivarama , Asif Muhammed , Avadhani Ramakrishna
Published: November 2019

Background : Long bones derive their nutrition through a nutrient artery that enters the bone through a foramen in its diaphysis. An orthopedic surgeon must be familiar with the topography of the nutrient foramina to avoid vascular compromise during surgery. Aim :This study attempts to analyze the topography of primary nutrient foramina of femora. Materials and method : One hundred dry adult femora were used for this study. The primary diaphyseal nutrient foramina were identified macroscopically using hand lens. The number of foramina and their position were noted and the foramina! index was calculated. Results : It was observed that 79% of femora had single primary nutrient foramen, 20% had double foramina and I% had three foramina. All the foramina were located between 30.8%-89.6% of total length of femur. 11.47 % of foramina were in the upper third, 1.64% in the lower third and the majority 86.88% of foramina were in the middle third of femur. The mean foramina!index was 46.01. 82.78% of foramina were located on the linea aspera, 14.75% on the medial surface and2.46% on the lateral surface. Conclusion : An orthopedic surgeon operating on femur must be careful in the middle 1/3rd, especially over the linea aspera as majority of primary diaphyseal foramina were observed in this region. A cogent knowledge of vascular topography ensures preservation of vasculature of the bone during surgeries. This enables rapid healing of surgical wound increasing the success rates of fracture fixation, bone grafting, vascularized microscopic surgeries and hip and knee replacement procedures.
Variations in branching pattern of arch of aorta in Gujarat region
Authors: Patel Jitendra P. , Bhojak Naimish R. , Desai Jalpa N.
Published: November 2019

Background and aim: Study of variation in branching pattern of arch of aorta is important for cardio­ vascular surgeons to avoid injury during procedures like angiography and stenting of aorta. These variations are frequently encountered during surgical procedures, as a developmental alteration in branchial arch during embryonic period. The aim of present study is to describe variation in branching pattern of arch of aorta belonging to Gujarati population and these results will be of significance for anatomists for relating it with embryological basis, cardiovascular surgeons and radiologists. Materials and metbods: Forty embalmed cadavers were observed for study of branching pattern of arch of aorta during period of four year in Department of Anatomy in Smt N.H.L.Municipal Medical College, Ahmedabad. Results: In the present study, normal branching pattern of the arch of aorta was found in 92.5% cases. In 2.5% cases only two vessels originated from the arch of aorta, one of them was common trunk for brachiocephalic trunk and left common carotid artery and the second trunk was left subclavian artery. In 5% of cases four vessels arose from arch of aorta, the left vertebral artery arose directly from aorta with normal branching pattern. Conclusion: Vascular invasive procedures are increasing since last decade. So knowledge of variation in branches of arch of aorta is essential for cardiologist, cardiovascnlar surgeon as well as for radiologist.
Prenatal glomerular changes during development of human foetal kidney
Authors: Joshi Roli , Deopa Deepa , Sinha DN , Singh AK
Published: November 2019

Background and aims: The cortical glomerulus shows many developmental changes during fetogenesis. Nonnalhistologyofthe fetal glomerulus at various stages of development was studied to get insight into the morphology of fetal glomerulus. Fetal glomerular study is a necessity for correlation with increase in gestational age and pathological changes which may affect the normal functioning of kidneys in fetal life. Method: Dissection of 70 normal human fetuses was carried out and histological findings of glomerulus were noted with respect to the age of fetus. The histology of fetal kidney was studied using H & E stain. Important developmental stages of glomerulus were observed. Results: Fetal kidney glomerulus histology is different from adult. Unlike in adult kidney, foetal kidney glomerulus shows many developmental stages as v, c, s, cresentric in starting phase. Multiple rows arrangement in between mednllary rays with well developed mature glomeruli at juxtamednllary junction. Capillary invagination with developed Juxta glomerular apparatus was appreciated. Nephrogenic zone which was found as hroad band in early gestational weeks disappeared near term. Conclusion: The present study will be helpful in understanding the normal histological architecture of foetal kidney glomerulus and add to the existing knowledge regarding development of foetal kidney, its relation with gestational age and pathogenesis.
Network architecture of energy landscapes in mesoscopic quantum systems
Authors: Poteshman Abigail N , Tang Evelyn , Papadopoulos Lia , Bassett Danielle S , Bassett Lee C
Published: November 2019

Mesoscopic quantum systems exhibit complex many-body quantum phenomena, where interactions between spins and charges give rise to collective modes and topological states. Even simple, non-interacting theories display a rich landscape of energy states—distinct many-particle configurations connected by spin- and energy-dependent transition rates. The ways in which these energy states interact is difficult to characterize or predict, especially in regimes of frustration where many-body effects create a multiply degenerate landscape. Here, we use network science to characterize the complex interconnection patterns of these energy-state transitions. Using an experimentally verified computational model of electronic transport through quantum antidots, we construct networks where nodes represent accessible energy states and edges represent allowed transitions. We find that these networks exhibit Rentian scaling, which is characteristic of efficient transportation systems in computer circuitry, neural circuitry, and human mobility, and can be used to measure the interconnection complexity of a network. We find that the topological complexity of the state transition networks—as measured by Rent’s exponent— correlates with the amount of current flowing through the antidot system. Furthermore, networks corresponding to points of frustration (due, for example, to spin-blockade effects) exhibit an enhanced topological complexity relative to non-frustrated networks. Our results demonstrate that network characterizations of the abstract topological structure of energy landscapes capture salient properties of quantum transport. More broadly, our approach motivates future efforts to use network science to understand the dynamics and control of complex quantum systems.
A systematic study of the negative thermal expansion in zinc-blende and diamond-like semiconductors
Authors: Yang Kaike , Xiao Jin , Luo Jun-Wei , Li Shu-Shen , Wei Su-Huai , Deng Hui-Xiong
Published: November 2019

Upon heating, almost all zinc-blende (ZB) and diamond-like semiconductors undergo volume contraction at low temperature, i.e. negative thermal expansion (NTE), instead of commonly expected expansion. Specifically, CuCl has the largest NTE among these semiconductors with a coefficient comparable with the record value of ZrW2O8. So far, underlying physical mechanism remains ambiguous. Here, we present a systematic and quantitative study of the NTE in ZB and diamond-like semiconductors using first-principles calculations. We clarified that the material ionicity, which renders the softening of the bond-angle-bending and thus, the enhancement of excitation of the transverse acoustic (TA) phonon, is responsible for the NTE of ZB and diamond-like semiconductors. With the increase in the ionicity from the groups IV, III-V, IIB-VI to IB-VII ZB semiconductors, the coefficient of the maximum NTE increases due to the weakness in bond-rotation effect, which makes the relative motion between cation and anion transverse to the direction of the bond more feasible and the mode Grüneisen parameters of the TA modes more negative. Since CuCl has the highest ionicity among all ZB and diamond-like semiconductors, it is expected to have the largest NTE, in good agreement with the experimental observation. This understanding would be beneficial for tetrahedral materials with specific applications.
A security transmission system for Beidou short message based on SM9
Authors: Hu Ruiyun , Ju Lei , Chen Pengyu
Published: November 2019

With the increasing application of Beidou communication technology, the safety of the short message communication process of Beidou satellite navigation system becomes more and more important. Direct communication with Beidou short messages lacks reliable data security protection measures. In order to transmit Beidou short message safely and reliably, according to the characteristics of Beidou short message protocol and message structure, this paper proposes a security transmission system for Beidou short message based on sm9, which can meet the security requirements of the communication, and the cost investment is also greatly reduced.
RETRACTED: Trend and Risk Prevention of Accounting Information under the Background of Big Data
Authors: Guo Xiaohui
Published: November 2019

The development and progress of the times have certain laws and characteristics, and the era of big data also has its own unique characteristics and development direction. However, while promoting the improvement and development of economic level in all areas of society, there are also some problems in the development of the era of big data. In the context of the big data era, the exchange and sharing of information has increased rapidly. But at the same time, it also brings more difficulties in the field of traditional accounting information calculation. Traditional accounting management can not meet the needs of the times, which is out of the international development track. Therefore, under the background of big data, we need to make a reasonable analysis on the development trend and risk of accounting informatization.
Video Super-Resolution using Multi-Frames Fusion and Perceptual Loss
Authors: Zhu Xiaonan , Zhao Yucong , Wang Ping , Wang Yuanchen , Ma Jiquan
Published: November 2019

Video super-resolution (VSR) has become more and more important in vision perception. Currently, most of video super-resolution methods used optical flow estimation by explicit motion compensation. We proposed a new network using multi-frames as input without motion compensation. In order to improve the performance of the reconstructed high-resolution (HR) frame, perceptual loss function is used to evaluate the deviation between the prediction and ground truth. Perceptual loss characteristic is able to improve the quality of image reconstruction on the vision, but with a low Peak Signal to Noise Ratio (PSNR). Experimental results show that compared with other methods, our model can recover more details in high-resolution image, although it does not get higher PSNR value.
Research on Reliability of Positioning Error Measurement for NC Milling Machine
Authors: Chao Zeng
Published: November 2019

Laser interferometer is the common tool to measure the positioning error of CNC machine, and its measurement process will be affected by external factors. Therefore, it is very important to ensure the error accuracy which measured by laser interferometer for compensating the error of CNC machine tools. The positioning error of MVC850B CNC milling machine was measured by Renishaw laser interferometer. Firstly, the positioning error of it was measured in standard and actual environmental parameters, and measured results were comparatively shown in factors of temperature, air pressure and humidity. Secondly, the influence degree that in three conditions of feeding speed, interval distance and processing time was analyzed by the errors of reverse clearance and screw pitch cumulative. Finally, with the statistics of positioning errors measured in a certain period of time, this paper analyzed the reliability of positioning errors measured by laser interferometer and analyzed the variation of milling machine motion axis errors. Meantime, the possible location of machine errors can be predicted, and the positioning accuracy of CNC milling machine would be promoted.
Research on volume compression control system of solid and liquid food in bowl based on PLC
Authors: Liang Kai , Ai Changsheng , Ren Gangchang , Bao Yequan , Geng Dunyang
Published: November 2019

In order to solve the problem of liquid and solid food products in bowls produced by enterprises, the liquid and solid food products spilled during manual operation of food compression process. Product weight reduction affects production efficiency and labor intensity of workers. The specific control parameters are obtained through the orthogonal experimental design and observation method. Adopt digital control technology and design method of mechanical structure. The numerical control system can precisely control the movement and rotation of the pressure plate, and realize the numerical control functions of position, speed and force Angle in the compression process. The touch screen and PLC are the control core. Photoelectric sensor to obtain position parameters, servo motor drive screw linear module slider movement, stepper motor drive disk rotation Angle, touch screen to achieve man-machine interface. It provides research basis for further optimization and numerical control system of different solid-liquid food materials compression.
Assembly Error Modeling and Calculating Method of Precision Mechanical System
Authors: Min Zhang , Zhijing Zhang , Lingling Shi , Weimin Zhang
Published: November 2019

Nowadays, there is no effective quantitative analysis method to describe the influence of design tolerance on the machining error of parts and the assembly accuracy of mechanical system at the design stage, which makes it difficult to analyze, predict and control the assembly accuracy in the actual assembly process, Aiming at this problem, a method for representation and modeling of geometric errors of parts is proposed. Furthermore, based on the above-mentioned geometric error modeling method of parts, a research method of geometric error transfer analysis and modeling for precision mechanical system oriented to actual assembly process is proposed.
PMSM speed control method based on Kalman filter and dynamic fuzzy control in electric vehicle
Authors: Ju Xiaohui , Wu Feng , Shi Linjun
Published: November 2019

Electric vehicles are widely used today, however, the phenomenon of sticking and shaking often occurs during starting, crawling and shifting. The cause of this phenomenon from the perspective of motor control was analyzed in this paper. In view of the disadvantages of low measurement accuracy of position sensor and traditional PID control, a dynamic fuzzy control speed control system based on Kalman filter optimal measurement was proposed. The principle of the system is simple, with good dynamic and static performance, which improves the accuracy of vehicle starting, crawling and gear shifting, and shortens the adjustment time.
The study on data migration from relational database to graph database
Authors: Nan Zhihong , Bai Xue
Published: November 2019

Under the background of big data, using relational databases to manage massive data may have some problems just like storage capacity and query efficiency. So, there is a new kind of databases called NoSQL to store data. However, the data models of NoSQL databases are different from relation databases. In order to finish migrating historical data from relational databases to NoSQL databases, in terms of graph database in the NoSQL databases, this paper takes ER diagram as the original model, graph model as target, and makes some transformational rules by using the relationships of entities. And this paper proposes an algorithm which can finish data migration by traversing ER diagram and using the transformational rules. This method can reduce the impact of model differences between relational databases and graph databases, ensure the integrity constraint of data, and automatically complete data migration. The experimental results show the validity and correctness of the data migration.
Communication Network Discovery through Correlation Matrix
Authors: Ti Guan , Yujie Geng , Qiang Ma , Yong Liu , Lin Lin
Published: November 2019

Communication network discovery is a herculean task for IDC operators, who usually been lacking of the knowledge of business architecture. The traditional method, by analyzing the source address and the destination address inside of the communication packet, to explore the network connection graph is extremely inefficient, especially when dealing with the hybrid network. This paper presented a novel approach to discover the communication network through the correlation matrix of the cpu utilization dataset.
Improved Wavelet Denoising by Penalty Function and Regularization Parameter
Authors: Wei Wanhui , Zhou Wei , Wu Yongjun
Published: November 2019

Wavelet-based convex optimization in sparse signal processing has attracted extensive research interest in recent years. Research demonstrates that the penalty function promotes the sparsity and improves the accuracy better than L1 norm method in dealing with convex and sparse signal reconstruction issues. This paper presents an improved denoising model which utilizes a penalty function to induce stronger sparsity in wavelet domain. In this paper, we have redefined the relationship model between signal noise levels and the regularization parameter to enhance sparsity caused by penalty functions in a wavelet domain. And three penalty functions are employed for wavelet coefficients to induce strong sparse wavelet coefficients under the wavelet domain. We then apply the improved wavelet denoising algorithm for image denoising to get the values of the PSNR are analysed under different noise level conditions. Experimental results clearly show that the improved wavelet denoising model is strength in terms of both quantitative measure and structural similarity quality, and outperforms many widely used denoising algorithms.
Numerical Simulation and Topological optimization of the dry clutch pressure plate
Authors: Zheng Xianling , Gong Yubing
Published: November 2019

The common dry clutch pressure plate was prone to produce high temperature and axial thermal deformation due to the frictional heat generated during engagement. The overheated and overdeformed pressure plate decreases the torque transmission capacity of the clutch system and causes some kind of clutch malfunction including clutch slip and fracture. In this paper, the clutch pressure plate was firstly optimized by the topological optimization. Inspired by the topological optimized result, an improved design of the pressure plate was brought out, where the specific radial cooling channels and axial cooling holes were introduced in the new improved design in order to improve heat transfer and reduce the mass and thermal deformation as well. The performance of the new improved design is simulated and further optimized by the FE method. It is indicated that the mass of the optimum pressure plate was greatly reduced from the original design, with a mass reduction of 3.1 kg. The axial thermal deformation is also significantly decreased from the original pressure plate, decreasing from the original 0.35mm to the present 0.28mm while keeping the maximum temperature of pressure plate unchanged. These comparisons show that thermal-mechanical performance of the new pressure plate is improved effectively.
Application of blind source separation in sound source separation
Authors: Xu Jiarui
Published: November 2019

The classic method for solving the cocktail party problem is by utilizing Independent Component Analysis (ICA) method to separate different sounds. Since ICA method deals with each frequency point of the audio signal individually, there is a classic sorting problem. However, for Independent Vector Analysis (IVA), which makes use of the correlations between different frequency points of the same sound source, the audio of the same sound source can be isolated at one time without sorting problems. For music signal, due to the rhythm of music, there may be a strong correlation between different frequency points of the same sound source, so IVA method could be used for signal separation. This paper will discuss the application of IVA method in music sound separation and its application in music related speech recognition system from three aspects: basic principle, code implementation and performance analysis.
Analysis on the Influence Factors of Propellant Tank Stress
Authors: Xin T D , Yang D P , Duan Y S
Published: November 2019

The propellant tank is a vital structure for the liquid rocket, and the analysis of influence factors to the propellant tank stress can provide a significant reference to design the propellant tank. Through establishing the ellipsoid cylindrical tank model, the meridian stress and hoop stress distributions of tank roof, cylinder and bottom are analysed. And then the equivalent stress is defined based on the material strength theory. According to the parameters of a certain type tank, the equivalent stresses of tank roof, cylinder and bottom are worked out with different ellipsoidal norms, overload factors, tank radiuses and internal pressurizations, the effects of these influence factors on the tank stress are analysed, and the change laws of tank roof, cylinder and bottom equivalent stresses are determined to provide a reference for the design of propellant tank.
Research on Servo Transmission Control System of Laser Micro-Texture Machining Machine
Authors: Wang Fan , Wu Guoqing , Zhang Xudong , Huang Zhenyi
Published: November 2019

In the process of laser surface micro-texture processing, the instantaneous speed and instantaneous acceleration of the moving machine tool are high, the positioning error and repeated positioning error are difficult to control, and the precision of laser micro-texturing processing cannot be guaranteed. The dynamic model of the machine tool servo system is established. Based on the model, the error compensation scheme of the control system is designed. A speed and acceleration composite feedforward compensation PID control strategy is proposed. In order to illustrate the superiority of the proposed position accuracy compensation method, the PID control effects before and after compensation were compared. The results show that the position error of the system is reduced from 4μm to 1μm before compensation, and the repeat positioning accuracy is improved by 50%. Experiments show that this kind of control strategy can effectively reduce the position error of laser micro-texturing processing system, and has higher position tracking accuracy and repeat positioning accuracy, which satisfies the system’s demand for high-precision positioning, and is the surface micro-texture morphology. Performance studies provide more sophisticated machine tool servo control strategies and higher laser surface micro-texture machining accuracy.
Research on recoil dynamic characteristics of a gatling gun automatic machine
Authors: Sun Yifang , Li Li , Xie Feng
Published: November 2019

This paper takes an aerogun automatic machine as the research object, and uses the classical internal ballistic theory to establish a mathematical model for calculating the bore resultant force. The fourth-order Runge-Kutta solution is used to calculate the average pressure-time curve in the internal ballistic and after-effect period. The automatic machine virtual prototype model is established by using the 3D model of the automatic machine and the calculation result of the bore resultant force, and the recoil displacement, recoil velocity and recoil force of the automatic machine are obtained, which provides a theoretical basis for the subsequent research and design of the automatic machine.
Trajectory Planning for Rotational Chain Shell Magazine
Authors: Dong Ningning , Yin Qiang
Published: November 2019

To ensure the stability and reliability of the rotational chain shell magazine moving system, the trajectory planning such as cubic curve, quintic curve, T-shaped velocity curve and S-shaped velocity curve were considered in this paper. The effectiveness and feasibility of each trajectory planning method for the control system of the rotational chain shell magazine were verified by the combination simulation technology of MSC. ADAMS and MATLAB. The simulation results show that the S-shaped velocity curve satisfies the requirement of the smoothness and continuity of the trajectory of the magazine. It ensures the continuity of angular velocity and acceleration, and reduces the buffeting and impact effectively that other curves can’t satisfy. It is of great significance for the stability and reliability of the rotational chain shell magazine.
Comprehensive evaluation of urban livability
Authors: Liu Dengfeng , Zhang Chen , Yu Haixin
Published: November 2019

This article is based on the comprehensive evaluation of urban livability. This article selects the indicators to measure the urban livability, and uses the factor analysis method to reasonably screen the indicators, and establishes an improved BP neural network evaluation model to obtain the livability of different cities in Shaanxi Province. Monte Carlo simulation is used to analyze the impact of different indicators on urban livability. Then this article comprehensively considers the uncertain factors, establishes a predictive model of stochastic differential equations, and establishes a dynamic evaluation model to reassess the livability of cities.
Experimental investigations on wire electro-discharge machining (WEDM) of TiN/Si3N4 Nano-complex ceramics
Authors: Da Zhang , Chengmao Zhang
Published: November 2019

In this paper, the surface characteristics of TiN/Si3N4 nano-complex ceramics cut with wire electro-discharge machining are studied. The effect of single pulse energy on surface properties is investigated in detail. The microscopic observation of the surface appearance with the scanning electron microscope shows that the longer the pulse discharge time, the greater the pulse discharge current, the greater the single pulse energy, the deeper the surface discharge pit, the larger the size, the surface melting and re-solidification phenomenon is more serious. The micro-observation of the cross-section of the surface processed shows that the surface metamorphic layer includes the melting and re-freezing layer and the white layer, the thickness of surface metamorphic layer is about 1 to 10 μm. The longer the pulse discharge time, the greater the single pulse energy, the greater the thickness of the surface metamorphosis layer. Due to the randomness of the discharge process, the metamorphic layer is not uniform.
Analysis of Rotor Grounding Protection Action of Large Synchronous Condensers
Authors: Tang Xiaozheng , Zhao Hongfei , Jiang Mengyao , Ma Hongzhong , Liu Yidan , Zhao Shuai , Li Chengying
Published: November 2019

Rotor Grounding protection of synchronous condensers in a converter station of Jiangsu province acted on September 24, 2018. The burning loss of primary side of synchronous transformer was found by accident investigation. Based on the theory of rotor grounding protection and fault cause, the correctness of rotor grounding protection of injection is verified. Meanwhile, the unstable grounding fault caused by the synchronous transformer was further studied. Based on the analysis of fault recording waveform of converter station, this paper proposes an improved scheme for the rotor grounding protection logic. Compared with the traditional rotor grounding protection logic, it can avoid the situation that the fault cannot be removed in time because of the unstable grounding fault. It can provide a reference for the protection of the excitation system of the new large-capacity synchronous condensers.
Research on Load Collection Technology of Tractor Frame
Authors: Zhu Shumin , Yuan Zhengwen , Sun Liang
Published: November 2019

A convenient and feasible tractor frame external load collection technology is proposed in this paper. Based on the frame structural and force characteristic, the sensors for the load measurement are designed, and the mathematical relationship between the loading force and the sensor output voltage and the displacement signal is obtained. On this basis, the theoretical calculation model of the frame external load is established. Based on the dynamic test load spectrum data of the frame, the virtual strain at the locations (L1 and L2) is obtained through simulation. The comparison between the virtual strain and the actual strain shows that the frame external load data is reasonable, which proves that the load collection technology is credible and can provide data support for tractor design and optimization.
Research and development of surface heat flux sensor for high speed aircraft
Authors: Wanqing An , Xiaoning Liu , Yue Zheng , Xincheng Xu , Xiaoyuan Yang
Published: November 2019

A water-cooled high temperature and high heat flow sensor was developed to meet the requirements of high heat flow measurement under ultra-high temperature conditions on the surface of high speed aircraft. This type of sensor is based on the measurement principle of circular foil heat flow sensor. Cooling water is introduced through structural design optimization to ensure that the structure, measurement accuracy, sensitivity, linearity and other indicators of the sensor do not change at ultra-high temperature of 1600°C, so as to achieve extremely high heat flow measurement on the surface of the aircraft. Through the test verification, the heat flow sensor can withstand 1600°C, heat flow measurement range up to 1000KW/m2, measurement accuracy is better than 5%.
Synchronization Control and Circuit Implementation of Fractional-order Rabinovich Hyperchaotic System
Authors: Lei Tengfei , Yan Tingyang , Fu Haiyan , Wang Yanling
Published: November 2019

In this paper, a synchronization controller is designed for fractional Rabinovich hyperchaotic system. The fractional Rabinovich hyperchaotic system is solved and the phase diagram is drawn by improved Adomian decomposition method. At the same time, an adaptive synchronization control method is proposed based on Lyapunov stability theory of fractional nonlinear system. Multisim software is used to simulate the synchronization controller. The simulation results show the effectiveness of the control strategy.
Research on a High Reliability Multi-Controller Deployment Method
Authors: Gao Hanghang , Wang Xiang , Zhao Shanghong , Zhang Kun , Wang Guodong
Published: November 2019

In the software-defined aeronautical information network architecture, a multi-controller deployment scheme was proposed for the control plane scalability problem, which includes two phases: cluster domain partitioning and intra-domain deployment controller. An improved k-means algorithm was proposed in the cluster domain segmentation phase, which can effectively avoid discrete points from becoming cluster center. When the controller was deployed in the cluster domain, the minimum failure rate of the control path in the network was targeted, and an improved discrete particle swarm optimization algorithm was used to solve the problem to obtain effective control of the network. The simulation results show that the algorithm can effectively reduce the failure rate of the control path based on the reasonable division of the cluster domain. For example, when the number of controllers was increased from 3 to 15, the total failure rate was correspondingly reduced from 0.242 to 0.092, and good results are obtained. This solution provides a new way to solve the problem of multi-controller deployment under dynamic and large-scale networks.
Reduction of Power Consumption in Norflash Memory Based Wearable Electronics with Improved LRU Algorithm
Authors: Li Yueting , Leng Qunwen
Published: November 2019

Norflash storage is a very important memory module for the practical application in the smart wearable electronics. For the versatility and complexity of its functional applications, it is highly demanded to build Norflash flash devices in the system. The Norflash memory devices have advantages in terms of the fast transmission speed, small volume, and good stability, when the algorithm calls the storage module to record the data and read user inquired storage data. Each startup of access in the storage module will cause a lot of power consumption. The improved Least Recently Used (LRU) algorithm is implemented to the Norflash memory device of the intelligent wearable electronics in order to reduce the power consumption in this work. The type M29F010B of ST’s chips is used for this investigation. The interface design method of the chip is analyzed in details. This approach reduces the number of accesses in the wearable electronics devices while reading from the recorded Norflash pages in the memory, comparing with the ordinary storage methods under the original operations. It shows that the improved LRU algorithm could effectively reduce the system power consumption and therefore to enhance the battery efficiency up to 8.8%.
Execution process monitoring technology for electronic assembly production
Authors: Li Huaidong , Zhang Niansong , Wang Aiming
Published: November 2019

With the increasing demand for the patterning and refinement of electronic components, the structural design of electronic products is complicated, which in turn increases the complexity of electronic assembly production. Therefore, the traditional production execution monitoring information cannot meet the current requirements for assembly execution monitoring. This paper proposes process monitoring technology for electronic assembly production, including the execution process quality monitoring technology for electronic assembly production and the visual monitoring technology based on electronic assembly production instant Kanban. The two technologies achieve the refined management of electronic assembly production and the control of the execution process.
Exploration and Practice of Informatization Means in the Quality Supervision of College Classroom Teaching
Authors: Li Shijin , Shi Ting , Kuang Jinyun
Published: November 2019

Constructing the monitoring system of teaching quality in colleges and universities is an effective and effective means of reforming higher education. The monitoring of classroom teaching is an important part of the monitoring system of teaching quality in colleges and universities. In this paper, the artificial intelligence technology at the forefront of information technology in recent years is applied to the classroom teaching monitoring in colleges and universities. From pre-class attendance to classroom state, information and means are used to monitor students and teachers in all aspects. Using machine learning related algorithms to analyze attendance and classroom state data and final grades, and improve the quality of classroom teaching quality monitoring. This expectation provides a certain reference for China’s higher education reform.
Legal Creation of Smart Contracts and the Legal Effects
Authors: Liu Yang , Huang Jincheng
Published: November 2019

Smart contracts are software codes based on the Blockchain technology which are involved in the field of information technology. The Blockchain smart contract is still in the contractual scope in nature, although its origin and automatic performance functions are different from existing contracts, but it can be identified as a typical unnamed contract. Therefore, at the legal level, a smart contract is a new form of contract that can automatically and automatically perform all or part of the contract. While discussing the technical aspects of smart contracts, we cannot ignore the relevant issues at the legal level. Smart contracts are developments and innovations in the form of traditional contracts. Smart contracts exist in electronic form and automatically fulfill contracts through software that is accurately encoded on the Blockchain. How to create smart contracts according to law and evaluate the legal effect of smart contracts are the main research issue of this paper.
Flow redirection based MPLS label algorithm in SDN
Authors: Wang Lisheng , Yi Peng , Jiang Yiming , Gu Yunjie , Ding Yuehang
Published: November 2019

Aiming at the problem of congestion of flow table caused by limited performance of data plane TCAM in Software-Defined Networking (SDN), an MPLS labeling algorithm based on flow redirection is proposed. The algorithm utilizes the source node switch flow redirection and the path switch to decentralize the MPLS label, occupies a part of the data link bandwidth to alleviate the problem that the TCAM update flow table rate is too slow, and can increase the system switch load. Compared to the existing method, the link load is reduced by up to 60% and the flow entry insertion delay of nearly 90% is increased, and the system capacity is increased by up to 200%.
A low-cost authentication technology of car key based SIMO-VLC
Authors: Yang Fan , Jiang Kui
Published: November 2019

With the wide application of software radio technology platform, the traditional authentication technology of car key based on radio is no longer reliable. In this paper, a low-cost SIMO-VLC (single input multiple output visible light communication) system is designed to meet the needs of automobile key authentication, which effectively improves the authentication safety performance of automobiles. Furthermore, the hardware platform of the SIMO-VLC system was presented. Finally, we finished the actual test of bit error rate for scenarios with different colours and different distances in the experiment. The experimental results demonstrate that this technology has better communication reliability in the range of 5-180cm with blue light source.
SOC Estimation of Modular Lithium Battery Pack Based on Adaptive Kalman Filter Algorithm
Authors: Cai Zhi Duan , Xu Jing Yun , Yue Sun Xiao , Quan Li Di
Published: November 2019

Lithium battery state of charge (SOC) is a core parameter in battery management systems. In order to suppress the influence of noise characteristics on the accuracy of SOC estimation, this paper proposes an adaptive kalman filter (AKF)algorithm with variable noise variance based on the battery equivalent circuit model. In order to improve the accuracy of SOC estimation, the algorithm estimates the noise variance online and applies the noise variance estimation to kalman filter iteration process. Aiming at the modular structure of the battery pack, a segmentation variable weighting coefficient algorithm is proposed to estimate the SOC value of the entire battery pack. Based on the simulation platform of matlab, this paper carries out experimental verification and analysis. The results demonstrate the effectiveness and superiority of the algorithm.
Analysis on the Application of artificial Intelligence in classroom
Authors: Qi By Wang
Published: November 2019

With the continuous development and strength of information, the development of artificial intelligence has also moved towards a new stage, gradually living, but also only applied in a few fields and a few regions. Therefore, this paper puts forward a tentative idea whether artificial intelligence can be used in our classroom in the near future. With the smart phone, IPD and other intelligent items in the life of more and more widely used, its simplicity and intelligence, so that all the young and old, the use of a wide range of people, and easy to accept. With the diversity of modern life, the needs of students in the new era are becoming more and more widespread, while the traditional classroom teaching mode is being issued. Birth change, but the form is still relatively single, so for the traditional classroom, intelligent classroom will show a great advantage. It is possible to make students understand the content of the course before the beginning of the course by simulating the form of the real class, and choose the style and form of the course according to the students’ ability and interest in the learning process. In the era of the vigorous development of artificial intelligence, the development of intelligent classroom and intelligent classroom will not be underestimated, and intelligent classroom will also play a great role in the development of life in the future.