bluuebunny/crossref_metadata_2025 huggingface dataset:
The Future of Human Uterus Transplantation
Authors: Johannesson Liza , Dahm-Kähler Pernilla , Eklind Saskia , Brännström Mats
Published: September 2014

The only untreatable subgroup of female infertility is absolute uterine factor infertility (AUFI), which is due to congenital or surgical absence of a uterus or presence of a nonfunctional uterus. The solitary option for a woman with AUFI to become a biological mother today is through a gestational surrogate mother, a procedure that is prohibited in Sweden and large parts of the world. Uterus transplantation (UTx) is a potential future treatment of AUFI. After extensive animal research, also involving non-human primates, a small number of human UTx cases have recently been performed. Here, we summarize the primate UTx experiments that have paved the way for the human UTx cases, which are described and analyzed in more detail. We also estimate how many women of fertile age are affected by AUFI and describe the causes. The ethics around UTx is complex and is also addressed.
Evolutionary Strategy for Systemic Therapy of Metastatic Breast Cancer: Balancing Response with Suppression of Resistance
Authors: Kam Yoonseok , Das Tuhin , Minton Susan , Gatenby Robert A
Published: September 2014

Conventional systemic therapy for disseminated breast cancer is based on the general assumption that the greatest patient benefit is achieved by killing the maximum number of tumor cells. While this strategy often achieves a significant reduction in tumor burden, most patients with metastatic breast cancer ultimately die from their disease as therapy fails because tumor cells evolve resistance. We propose that the conventional maximum dose/maximum cell kill cancer therapy, when viewed from an evolutionary vantage, is suboptimal and likely even harmful as it accelerates evolution and growth of the resistant phenotypes that ultimately cause patient death. As an alternative, we are investigating evolutionary therapeutic strategies that shift the treatment goal from killing the maximum number of cancer cells to maximizing patient survival. Here we introduce two novel approaches for systemic therapy for metastatic breast cancer, considering the evolutionary nature of tumor progression; adaptive therapy and double-bind therapy.
Bipolar Disorder in the Postpartum Period: Management Strategies and Future Directions
Authors: Pope Carley J , Sharma Verinder , Mazmanian Dwight
Published: September 2014

Bipolar I and II disorder are chronic and severe psychiatric illnesses that affect many women. Furthermore, women are at increased risk for mood episodes during the postpartum period compared with non-postpartum periods. Unfortunately, identification of clinically significant depressive or (hypo)manic episodes can be challenging. Delays in detection, as well as misdiagnosis, put women at risk of many negative consequences, such as symptom exacerbation and treatment refractoriness. Early and accurate detection of bipolar I or II disorder in the postpartum period is critical to improve prognosis. At this time, limited recommendations can be made due to a paucity of research. Further research on postpartum bipolar I or II disorder focusing on its identification, consequences and treatment is urgently needed to allow for empirically informed clinical decision-making.
Toward Conceptualization, Discriminant Validation, and Coherent Nomenclature for Inter-Disciplinary Theoretical Transfer
Authors: Gaski John F.
Published: September 2014

Beyond calling attention to Lee, Cho, Seo, Lee, and Choi's (2014) worthy construct validation regimen, the purpose of this brief note is to extend the study's effect by interpreting the broader than usual empirical and theoretical connections in a way that may not be obvious.
Computerized Assessment of Age Differences in Memory Beliefs
Authors: Hertzog Christopher , Lineweaver Tara T. , Hines Jarrod C.
Published: September 2014

Beliefs about memory play a role in older adults' concerns about aging and can influence their performance on memory tasks. Visual analog scales can capture beliefs about how aging affects memory in general (the General Beliefs About Memory Instrument [GBMI]) and one's own memory (the Personal Beliefs About Memory Instrument [PBMI]). Data were combined across four cross-sectional studies of adults who had completed the two measures, contrasting traditional paper-and-pencil versions of the questionnaires with newer computerized versions that use a computer mouse for visual analog scaling. This scaling method is easy to use and automates scoring of graphic rating scale responses. Adults of all ages produced GBMI responses reflecting their belief that memory declines with advancing age. Older adults' PBMI responses indicated that they perceived their memory ability more negatively than those of young adults and middle-aged adults. Adults of all ages were able to use the computerized questionnaires without difficulty, making these measures suitable for use in adult developmental research.
Methods for estimating vehicle queues at a marine terminal: A computational comparison
Authors: Chen Gang , Yang Zhong-Zhen
Published: September 2014

A long queue of vehicles at the gate of a marine terminal is a common traffic phenomenon in a port-city, which sometimes causes problems in urban traffic. In order to be able to solve this issue, we firstly need accurate models to estimate such a vehicle queue length. In this paper, we compare the existing methods in a case study, and evaluate their advantages and disadvantages. Particularly, we develop a simulation-based regression model, using the micro traffic simulation software PARAMIC. In simulation, it is found that the queue transient process follows a natural logarithm curve. Then, based on these curves, we develop a queue length estimation model. In the numerical experiment, the proposed model exhibits better estimation accuracy than the other existing methods
Faculty Mentors’, Graduate Students’, and Performance-Based Assessments of Students’ Research Skill Development
Authors: Feldon David F. , Maher Michelle A. , Hurst Melissa , Timmerman Briana
Published: September 2014

Faculty mentorship is thought to be a linchpin of graduate education in STEM disciplines. This mixed-method study investigates agreement between student mentees’ and their faculty mentors’ perceptions of the students’ developing research knowledge and skills in STEM. We also compare both assessments against independent ratings of the students’ written research proposals. In most cases, students and their mentors identified divergent strengths and weaknesses. However, when mentor-mentee pairs did identify the same characteristics, mentors and mentees disagreed about the mentee’s abilities in 44% of cases in the Fall semester and 75% of cases in the Spring semester. When compared against performance-based assessments of mentees’ work, neither faculty mentors’ nor their mentees’ perceptions aligned with rubric scores at rates greater than chance in most categories.
The Role of microRNAs in Mitochondria: Small Players Acting Wide
Authors: Duarte Filipe , Palmeira Carlos , Rolo Anabela
Published: September 2014

MicroRNAs (miRNAs) are short, single-stranded, non-coding RNA molecules that act as post-transcriptional gene regulators. They can inhibit target protein-coding genes, through repressing messenger RNA (mRNA) translation or promoting their degradation. miRNAs were initially found to be originated from nuclear genome and exported to cytosol; where they exerted most of their actions. More recently, miRNAs were found to be present specifically in mitochondria; even originated there from mitochondrial DNA, regulating in a direct manner genes coding for mitochondrial proteins, and consequently mitochondrial function. Since miRNAs are recognized as major players in several biological processes, they are being considered as a key to better understand, explain, and probably prevent/cure not only the pathogenesis of multifactorial diseases but also mitochondrial dysfunction and associated diseases. Here we review some of the molecular mechanisms purported for miRNA actions in several biological processes, particularly the miRNAs acting in mitochondria or in mitochondria-related mechanisms.
Effect of Melatonin on Human Dental Papilla Cells
Authors: Tachibana Ryusuke , Tatehara Seiko , Kumasaka Shuku , Tokuyama Reiko , Satomura Kazuhito
Published: September 2014

Melatonin regulates a variety of biological processes, which are the control of circadian rhythms, regulation of seasonal reproductive function and body temperature, free radical scavenging and so on. Our previous studies have shown that various cells exist in human and mouse tooth germs that express the melatonin 1a receptor (Mel1aR). However, little is known about the effects of melatonin on tooth development and growth. The present study was performed to examine the possibility that melatonin might exert its influence on tooth development. DP-805 cells, a human dental papilla cell line, were shown to express Mel1aR. Expression levels of mRNA for Mel1aR in DP-805 cells increased until 3 days after reaching confluence and decreased thereafter. Real-time reverse transcription-polymerase chain reaction showed that melatonin increased the expression of mRNAs for osteopontin (OPN), osteocalcin (OCN), bone sialoprotein (BSP), dentin matrix protein-1 (DMP-1) and dentin sialophosphoprotin (DSPP). Melatonin also enhanced the mineralized matrix formation in DP-805 cell cultures in a dose-dependent manner. These results strongly suggest that melatonin may play a physiological role in tooth development/growth by regulating the cellular function of odontogenic cells in tooth germs.
Phytotoxicity of 4,8-Dihydroxy-1-tetralone Isolated from Carya cathayensis Sarg. to Various Plant Species
Authors: Li Xian-Xian , Yu Min-Feng , Ruan Xiao , Zhang Yu-Zhu , Wang Qiang
Published: September 2014

The aqueous extract from Carya cathayensis Sarg. exocarp was centrifuged, filtered, and separated into 11 elution fractions by X-5 macroporous resin chromatography. A phenolic compound, 4,8-dihydroxy-1-tetralone (4,8-DHT) was isolated from the fractions with the strongest phytotoxicity by bioassy-guided fractionation, and investigated for phytotoxicity on lettuce (Latuca sativa L.), radish (Raphanus sativus L.), cucumber (Cucumis sativus L.), onion (Allium cepa L.) and wheat (Triticum aestivum L.). The testing results showed that the treatment with 0.6 mM 4,8-DHT could significantly depress the germination vigor of lettuce and wheat, reduce the germination rate of lettuce and cucumber, and also inhibit radicle length, plumule length, and fresh weight of seedlings of lettuce and onion, but could significantly promote plumule length and fresh weight of seedlings of cucumber (p < 0.05). For the tested five plants, the 4,8-DHT was the most active to the seed germination and seedling growth of lettuce, indicating that the phytotoxicity of 4,8-DHT had the selectivity of dosage, action target (plant type) and content (seed germination or seedling growth).
Effect Analysis of Mineral Salt Concentrations on Nosiheptide Production by Streptomyces actuosus Z-10 Using Response Surface Methodology
Authors: Zhou Wei , Liu Xiaohui , Zhang Pei , Zhou Pei , Shi Xunlong
Published: September 2014

The objective of this study was to develop an optimal combination of mineral salts in the fermentation medium for nosiheptide (Nsh) production using statistical methodologies. A Plackett-Burman design (PBD) was used to evaluate the impacts of eight mineral salts on Nsh production. The results showed that among the no-significant factors, CaCO3, and K2HPO4·3H2O had positive effects, whereas FeSO4·7H2O, CuSO4·5H2O, and ZnSO4·7H2O had negative effects on Nsh production. The other three significant factors (Na2SO4, MnSO4·H2O, and MgSO4·7H2O) were further optimized by using a five-level three-factor central composite design (CCD). Experimental data were fitted to a quadratic polynomial model, which provided an effective way to determine the interactive effect of metal salts on Nsh production. The optimal values were determined to be 2.63, 0.21, and 3.37 g/L, respectively. The model also ensured a good fitting of scale-up Nsh batch fermentation with a maximum production of 1501 mg/L, representing a 1.56-fold increase compared to the original standard condition. All these results revealed that statistical optimization methodology had the potential to achieve comprehensive optimization in Nsh fermentation behaviors, which indicates a possibility to establish economical large-scale production of Nsh.
Energy Considerations for Plasma-Assisted N-Fixation Reactions
Authors: Anastasopoulou Aikaterini , Wang Qi , Hessel Volker , Lang Juergen
Published: September 2014

In a time of increasing concerns about the immense energy consumption and poor environmental performance of contemporary processes in the chemical industry, there is great need to develop novel sustainable technologies that enhance energy efficiency. There is abundant chemical literature on process innovations (laboratory-scale) around the plasma reactor itself, which, naturally, is the essential part to be intensified to achieve a satisfactory process. In essence, a plasma process needs attention beyond reaction engineering towards the process integration side and also with strong electrical engineering focus. In this mini-review, we have detailed our future focus on the process and energy intensification of plasma-based N-fixation. Three focal points are mainly stressed throughout the review: (I) the integration of renewable energy; (II) the power supply system of plasma reactors and (III) process design of industrial plasma-assisted nitrogen fixation. These different enabling strategies will be set in a holistic and synergetic picture so as to improve process performance.
Blending Landsat and MODIS Data to Generate Multispectral Indices: A Comparison of “Index-then-Blend” and “Blend-then-Index” Approaches
Authors: Jarihani Abdollah , McVicar Tim , Van Niel Thomas , Emelyanova Irina , Callow John , Johansen Kasper
Published: September 2014

The objective of this paper was to evaluate the accuracy of two advanced blending algorithms, Spatial and Temporal Adaptive Reflectance Fusion Model (STARFM) and Enhanced Spatial and Temporal Adaptive Reflectance Fusion Model (ESTARFM) to downscale Moderate Resolution Imaging Spectroradiometer (MODIS) indices to the spatial resolution of Landsat. We tested two approaches: (i) “Index-then-Blend” (IB); and (ii) “Blend-then-Index” (BI) when simulating nine indices, which are widely used for vegetation studies, environmental moisture assessment and standing water identification. Landsat-like indices, generated using both IB and BI, were simulated on 45 dates in total from three sites. The outputs were then compared with indices calculated from observed Landsat data and pixel-to-pixel accuracy of each simulation was assessed by calculating the: (i) bias; (ii) R2; and (iii) Root Mean Square Deviation (RMSD). The IB approach produced higher accuracies than the BI approach for both blending algorithms for all nine indices at all three sites. We also found that the relative performance of the STARFM and ESTARFM algorithms depended on the spatial and temporal variances of the Landsat-MODIS input indices. Our study suggests that the IB approach should be implemented for blending of environmental indices, as it was: (i) less computationally expensive due to blending single indices rather than multiple bands; (ii) more accurate due to less error propagation; and (iii) less sensitive to the choice of algorithm.
Sur le nom de Poséidon et sur les noms en -ᾱ-ϝον, -ῑ-ϝον
Authors: Ruijgh Cornelis Jord
Published: September 2014

§ 1 : L'étymologie de Ποσειδῶν <Ποτειδάων : *Πότει Δᾶς 'Seigneur de la terre !' ou mot préhellénique ? —

§ 2 : L'alternance τ/σ (grec occidental : autres dialectes), ει/ι (théonyme : dérivé), ει/οι (assimilation vocalique) ; le témoignage des formes mycéniennes. —

§ 3 : La forme corinthienne Ποτειδάϝων et les problèmes qu'elle pose. —

§ 4 : Les faits du grec alphabétique invitent à partir de *Ποτειδάh-ων- avec le dérivé *Ποτιδαh-ιο-. —

§ 5 : Cette conclusion est confirmée par les faits mycéniens. —

§ 6 : La fonction du suffixe -ων- ; le doublet Ποτειδᾶς <*-αh-ᾱς et le féminin po-si-da-e-ja. —

§ 7 : Le parallélisme entre Ποτειδάων/Ποτειδᾶς et Έρμάων/Ἑρμᾶς <-άh -ᾱς ; e-ne-si-da-o-ne. —

§ 8 : Ποτειδάϝων s'explique par l'analogie du type Παιάϝων ; discussion sur les thèmes en -ᾱ-ϝov-, bien attestés en mycénien et survivant dans le type Μαχάων (gén. -ονος). —

§ 9 : Discussion sur les thèmes en -ῑ-ϝον-, attestés en mycénien et survivant dans le type Ἀμφίων (gén. -ίονος). —

§ 10 : La distinction entre les noms en -ἴων- (patronymiques et anthroponymes) et ceux en -ῑον- (sobriquets et anthroponymes) chez Homère ; discussion de quelques problèmes (Μολΐονε, Ώρΐωνος, Κρονΐονος).
Une série de sobriquets grecs : les noms κιßᾶς, κίßις, etc.
Authors: Masson Olivier
Published: September 2014

A propos d'un nom rare Κιβᾶς, génitif -ᾶδος, qui est récemment apparu à Thasos, on fait une recherche sur des formes comparables. A Thasos même, il y a Κίβις, qui n'est pas thrace ; en Eubée, on connaissait depuis longtemps un Κιβῦς, et un grammairien fournit le couple Κιβέας-Κιβής. Avec Bechtel, on met ce petit groupe en rapport avec une glose d'Hésychius κιβός « muet » : il s'agit donc d'une série de sobriquets, surtout ioniens, signifiant « muet » et probablement, au figuré, « stupide ».
Une image présocratique du Temps
Authors: Defradas Jean
Published: September 2014

Les fragments 594 et 593 (Naucka) d'Euripide ont été attribués au tyran Critias par Wilamo witz, qui y trouvait une allusion à la doctrine anaxagoréenne du Νους. En fait, le poète évoque une doctrine du temps, qu'il est difficile de rapprocher d'une philosophie déterminée. S'il est probable que l'auteur de ces vers soit bien réellement Critias, il semble avoir utilisé des images empruntées à des théories scientifiques tombées, pour ainsi dire, dans le domaine public : il fait œuvre de poète tragique et non de philosophe.
Sur un emploi de φωνή chez Platon
Authors: Leroy Maurice
Published: September 2014

Dans le passage du Cratyle qui donne l'étymologie de ἥρως (398 D-E), φωνή est à traduire par « orthographe » et l'expression κατά τὴν Άττικὴν τὴν πάλαιὰν φωνήν fait allusion à la réforme qui avait été introduite dans la graphie attique en 403/402 sous l'archontat d'Euclide.
Isocrate, XV, 311 : ὡς ἔχομεν
Authors: Taillardat Jean
Published: September 2014

On traduit traditionnellement ἐπειδὰν δ' οἰηθώμεν ὡς ἔχομέν τι λέγειν par « quand nous croyons avoir quelque idée (importante) à exprimer », en joignant ὡς à οἰηθῶμεν. En réalité, ce passage doit signifier « quand nous voulons nous exprimer sans façon », ὡς ἔχομεν (« vite et sans façon ») étant la locution bien connue.
Études sur le Grand Palais de Constantinople : les limites du Grand Palais à l'ouest
Authors: Guilland Rodolphe
Published: September 2014

Les textes, seule source dont nous disposions, permettent d'affirmer que SS. Serge et Bacchus et son monastère ainsi que le palais d'Hormisdas formaient la ligne de protection du Grand Palais, donc ses limites, à l'ouest.
Un recueil « De haeresibus » : Sion College, Codex Graecus 6
Authors: Aubineau Michel
Published: September 2014

Inventaire des 33 pièces d'un cod. londonien (XIIe s.), inutilisé jusqu'ici, encore que très précieux pour l'histoire des hérésies. Retenir, entre autres documents, une recension divergente du De haeresibus de Jean Damascene, avec notices originales, et trois pièces inédites : Historica synopsis attribuée à Photius, Florilège de Trinitate et Incarnatione, Eclogae des Novelles de Léon VI.
Notes, sur La Vie de saint Cyrille le Philéote. I
Authors: Festugière André-Jean
Published: September 2014

Cette Vie, longue et verbeuse, œuvre du moine Nicolas, contemporain de Cyrille (lequel mourut en 1110), a été soigneusement éditée par le P. Sargologos. A.-J. F. en montre la curieuse composition : des leçons, sans originalité, de vie spirituelle, faites de citations qui se suivent à toute occasion, noient les passages de récit, documents vivants, eux, qu'A.-J. F. relève volontiers.
Probing viscoelastic surfaces with bimodal tapping-mode atomic force microscopy: Underlying physics and observables for a standard linear solid model
Authors: Solares Santiago D
Published: September 2014

This paper presents computational simulations of single-mode and bimodal atomic force microscopy (AFM) with particular focus on the viscoelastic interactions occurring during tip–sample impact. The surface is modeled by using a standard linear solid model, which is the simplest system that can reproduce creep compliance and stress relaxation, which are fundamental behaviors exhibited by viscoelastic surfaces. The relaxation of the surface in combination with the complexities of bimodal tip–sample impacts gives rise to unique dynamic behaviors that have important consequences with regards to the acquisition of quantitative relationships between the sample properties and the AFM observables. The physics of the tip–sample interactions and its effect on the observables are illustrated and discussed, and a brief research outlook on viscoelasticity measurement with intermittent-contact AFM is provided.
Les politiques pour la promotion des PME innovantes en Chine
Authors: Liu Zeting
Published: September 2014

Longtemps laissées de côté par les pouvoirs publics, les PME chinoises sont aujourd’hui identifiées comme un enjeu important dans le Grand Bond en avant de l’innovation du pays. Si les études sur le système d’innovation en Chine et les grandes entreprises publiques sont abondantes, l’innovation des PME ainsi que les mesures publiques spécifiques qui les ciblent, sont toutefois relativement peu étudiées. Cet article a pour but d’identifier les petites entreprises innovantes chinoises, et examiner leur place dans le système d’innovation chinois et les politiques publiques qui les soutiennent. Classification JEL  : O38, O32, L25.
MULTI-MODALITY IMAGE REGISTRATION FOR SUBDURAL ELECTRODE LOCALIZATION
Authors: Dong Shuo , Liu Yuan , Cai Lixin , Bai Mei , Yan Hanmin
Published: September 2014

Surgical treatment has been proved to be an effective way to control seizures for some kinds of intractable epilepsy. The electrocorticogram (ECoG) recorded from subdural electrodes has become an important technique for defining epileptogenic zones before surgery in clinical practice. The exact location of subdural electrodes has to be determined to establish the connection between electrodes and epileptogenic zones. Artifacts caused by the electrodes can severely affect the quality of CT imaging and sequentially image registration. In this paper, we discussed the performance of mean squares and the Mattes mutual information metric methods in multimodal image registration for subdural electrode localization. Since the skull can be regarded as a rigid body, rigid registration is sufficient for the purpose of subdural electrode localization. The vital parameter for the rigid registration is rotation. The translation result depends on the result of rotation. Both the methods performed well in the determination of the rotation center. Rotation angles of different image pairs of the same volume pair fluctuated a lot. Based on the image acquisition process, we assume that the images within the same volume pair should have the same transformation parameters for registration. Results show that the mean rotation angles of images within one dataset are approximate to the manual results that are considered to be the actual result for registration despite their fluctuation range.
Optimization of Monitoring Points’ Layout for the Multi-Fan and Multi-Station Ventilation System
Authors: Wang Ting Jun , Xie Xian Ping , Li Jian Gong , Tan Xing Yu , Yin Xiao Yu , Su Mei Wei , Luo Wen Gui , Cui Chao
Published: September 2014

For optimal management and automatic supervision of the multi-fan and multi-station mine ventilation system, a certain number of monitoring points should be allocated in proper sites so as to provide necessary information reflecting the system’s operation status, which is an important part of on-line optimization management. The monitoring points’ setting is related to its number, location and network decomposition method. It’ll complicate the issue if taking the three factors into consideration all together. Divide the issue into 2 parts. First, use Fibonacci method to determine the monitoring points’ number without considering the location and network decomposition method. Second, determine the optimal location, and then get the optimal decomposition and maximum modulus difference. The application indicates it makes the problem easier to solve without much calculation.
The Smoke Exhausts Research on Urban Underground Fast Road
Authors: Zhou Xi , Liu Dong Dong
Published: September 2014

The aim of this research is to verify the effectiveness of smoke exhaust system including natural, longitudinal and semi-transverse system in urban underground fast road. For this research, a series of hot smoke tests were accomplished in experimental field in The Ministry of Transportation test site. The temperature distributions were recorded by thermocouples and the smoke flow laws were counted by visibility sensors. Meanwhile, the temperature distributions in the tunnel has been simulated by using the Computational Fluid Dynamics (CFD) software of ANSYS CFX. In terms of the experiments and simulation above, the smoke flow characteristics were demonstrated. Some valuable advices are given finally which can be applied to the design of smoke exhausted system in urban underground fast road.
Coupled Heat Transfer Simulation of a Low-Pressure Turbine Vane
Authors: Bian Xin , Li Tao , Jiang Liang , Zhang Rui Gang , Huang Hong Yan
Published: September 2014

A coupled heat transfer (CHT) solver was established. The solver couples the N-S equations with the heat conduction equation using the finite volume method. The developed CHT solver was verified by Mark II 5411 case. The numerical results agree well with experimental data, proving the accuracy of the developed CHT code. The solver was applied to the coupled heat transfer simulations of an air-cooled turbine with a single cooling channel. Adiabatic results and CHT results were compared. Different turbulence and transition models were employed. The result shows that the developed code is of great use in engineering simulations, and in order to predict thermal loads on turbine vane accurately, transition needs to be considered.
An Analytical Model for Dynamic Pull-In of Electrostatic Perforated Plate Actuators
Authors: Fang Yu Ming , Yu Jia Jia , Fu Wen Wen , Wang De Bo , Li Pu
Published: September 2014

Pull-in parameters are important parameters of electrostatic actuators. This paper presents three analytical approximate models for calculating the dynamic pull-in voltage and pull-in position of a perforated plate, respectively. The effects of the fringing field are included in two models. The accuracy of the three present models is compared with ANSYS results. Simulation results show that the detailed capacitance model with fringe effect has good agreement with the FEM results.
A Smart Tunnel Inspection Robot for the Detection of Pipe Culverts
Authors: Liu Li Sha
Published: September 2014

This document explains a type of Smart Tunnel Inspection Robot (STIR) for the detection of pipe culverts, including its system composition, the working principle, modules of hardware circuit, program flows and the interface of PC software. With devices of wireless video transmission, wireless data communication and the embedded technology of measurement and control, the STIR can replace human to detect and monitor various types of small diameter pipe culverts.
Strong Performance of the Triangle Structure of the Shovel
Authors: Zhu Dan Dan
Published: September 2014

This article through strong triangle structure of the shovel kinematics and mechanics model for the analysis of the kinematics and mechanics performance, and give strong triangle institutions mining envelope diagram, compared to the classic 10 rod 3 degrees of freedom of digging mechanism, proved what advantages the "strong triangle" has. Due to the strong triangle and the classic 10 lever 3 degrees of freedom in the difference on the structure, strong triangle institutions in the bucket special relative to the classic agency has the advantages of stability. Through research study "strong triangle" structure of the excavator, based on the kinematics and dynamics modeling method of parameter passing thought.
Research on Distribution Generation of Protection Scheme Based on MAS
Authors: Wang Jia Wei , Song Xiao Jun , Zhao Hai Bo , Li Wei , Guo Jing
Published: September 2014

Distributed energy and grid technology rapid development, its impact on the distribution grid protection is widespread concern. This paper describes the DG, Analysis of the access of distributed power for protection. Proposed protection architecture Based on MAS. Designed to compare the amount of current distributed power protection solutions. The program is simple and self-adaptability. This research is of great reference value.
Study on Velocity Measurement of Gas/Solid Flow Based on Electrostatic Sensor
Authors: Tang Yu , Deng Xiang , Tian Shuo
Published: September 2014

Electrostatic sensor is based on the principle of electrostatic induction. It is widely used for gas/solid two-phase flow measurement because it has the advantages of simple structure, high sensitivity, low cost, etc. In this paper, a velocity measurement system of gas/solid flow based on electrostatic sensor and cross-correlation algorithm is discussed. Electrostatic sensor with circular electrode is adopted. By COMSOL optimum simulation, the axial length of the electrode is designed. The signal conditioning circuits are discussed and cross-correlation algorithm is analyzed. The initial experimental results demonstrate that the velocity measurement system of gas/solid flow designed in this paper is feasible.
Summary of the Machine Tool Stiffness Method
Authors: Guan Jia Liang , Chen Ling , Zhu Lei
Published: September 2014

this paper discussed the significance of the machine tool stiffness and the definition of the machine tool stiffness classification. This paper studies the stiffness of the machine at home and abroad, the machine rigidity research methods, evaluation and performance optimization design research in recent years are discussed here in the machine tool stiffness, and the problems faced then solutions and suggestions are put forward. Finally, the problem of machine stiffness properties further study and future development trends are summed to improve tools, improve processing quality of products, and reduce production costs.
Evaluation of Notches in Pipes through the Use of Guided Wave and the Reflection Coefficient Method
Authors: Geng Hai Quan , Wang Yue Min , Zhu Long Xiang , Chen Le
Published: September 2014

Ultrasonic guided wave quantitative detection technology has not been widely studied; this limits the application and development of guided waves testing technology greatly. For the quantitative detection study of notches in pipes, the theoretical model of guided waves interacted with notches has been built. Through the model, the relation formula between reflection coefficient and defects axial length and depth has been derived. The relation curves have been plotted based on the relation formula. And then, experiment method was used to verify the curves, the two methods can agree with each other. At last, the size of the defect was evaluated through the theoretical relation curves, the evaluation agrees with the practical size relatively. The research results provide necessary guide in theory to the defects quantification of guided wave detection.
Experiment Study of Coupling Effect among the Rotary Axes in Simulator
Authors: Li Guang Hua , Chen Jin Zeng , Long Man Lin
Published: September 2014

Development of aerospace technology is inseparable from the excellent performances of guidance system. It often tests performances of guidance system on simulator in engineering. It can be drawn that coupling effect among the rotary axes in simulator is present by analyzing mathematical models of simulator. Currently, experimental study carried out for the conclusion about coupling effect among the rotary axes is a few. Therefore, experimental study about coupling effect among the axes at the time of simulator linkage is carried out to determine the existence of such a coupling effect and observe its impact.
Application of Vulnerability Index Method in Floor Water Inrush Evaluation
Authors: Li Xiao Ming , Zhou Qi Mou , Xiang Xiao Rui , Liu Jun
Published: September 2014

There are many factors that promote the coal seam floor water bursting, one coal seam floor water inrush evaluation method that can truly reflect being controlled by the impact of multiple factors and having very complex mechanism and process of evolution in the current is very necessary. In this paper, the case of the 9# coal seam in Shanxi Liulin Hongshengjude coal industry Co. Ltd.is taken as an example, analyzing the application of vulnerability index method in coal seam floor water inrush evaluation, a comparison is made on the assessment results obtained from vulnerability index method and the traditional water inrush coefficient assessment method. The results indicate that the assessment result of the vulnerability index method which considers factors comprehensively is truer to the reality and more advantages.
Improvement on a Fuzzy C-Means Algorithm Based on Genetic Algorithm
Authors: Jiang Guo Chen , Sun Zhi Jian
Published: September 2014

Weighting exponent m is an important parameter in fuzzy c-means(FCM) algorithm. In this paper, an approach based on genetic algorithm is proposed to improve the FCM clustering algorithm through the optimal choice of the parameter m. Experimental results show that the better clustering results are obtained through the new algorithm.
To Investigate the Euler Solution of Differential Equation
Authors: Zhao Lin Long
Published: September 2014

For Euler Equations L(y）=∑aixiy(i) =f(x)are Given Special Solution of a Direct Method, and a Special Coefficient Linear Differential Equations L(y)=∑aiy(i)=∑bjejx into Ordinary Differential Equations Euler.
Serviceology Education Community Based on Social Networking Service
Authors: Ding Feng , Liu Yu
Published: September 2014

Since service science is becoming more popular, many universities or companies have now set up numbers of groups to attract researches. In this paper we will introduce a new platform, which based on a Personalized Service System, aiming at real-time information exchange.
The Parametric Design and Finite Element Analysis of Wellhead Gate Valve Based on SolidWorks
Authors: Ma Xiu Hua
Published: September 2014

In this paper, SolidWorks2012 was redeveloped by visual programming tool Visual Basic6.0 to realize the three-dimensional parametric design of wellhead gate valve and the transformation of corresponding engineering drawings on the engineering diagram template. Then the finite element analysis was progressed directly by using the SolidWorks module of the finite element analysis. This can shorten design time of gate valve and improve work efficiency.
The Simulation Analysis of Virtual Prototype of Hydraulic Shovel
Authors: Zhu Dan Dan
Published: September 2014

The application of dynamic simulation software ADAMS virtual prototype was carried out on the powerful triangle structure of excavator analysis methods, including environmental Settings; add parts import, motion pair, driving Settings, the simulation calculation and image processing, etc. Application by ADAMS virtual prototype technology to "strong triangle" structure modeling and analysis, the performance of the excavator movement process and intuitive parameters change, for the realization of the excavator laid the foundation of virtual design and dynamic.
The Research of High-rise Building Fire Safety Simulation Model Based on System Dynamics
Authors: Wang Jin Feng , Liu Ye , Zhai Xue Qi
Published: September 2014

Firstly, this paper analyzed the factors affecting high-rise building fire safety in terms of the aspects of staff awareness, high-rise building fire design, fire-fighting facilities, daily management, and technology and so on. Secondly, on this basis, I determined the flow graph model and variables, and constructed high-rise building fire safety simulation model. Finally, a high-rise building was used to verify the applicability of the model. The findings have developed a clear direction in order to strengthen the management and formulation of high-rise building fire safety.
Realize of Geographic Information System for Dadong District, Shenyang Drainage Network
Authors: Ban Fu Chen , Tong Heng Yu , Wu Yu Ping , Han Xue
Published: September 2014

According to the digital management of city drainage network business need, combining with the present situation of city development of Dadong District, Shenyang drainage pipe network geographic information system, the paper introduced the overall design of city drainage pipe network geographic information system based on GIS technology, including system architecture design, network environment design, database design and system security design. The main functions of the system were described in detail. The establishment of information sharing platform solved the problem of drainage pipe network management in the practical application, it has great significance to ensure the normal operation of city drainage network and improve the efficiency of management.
Study on Rheological Behavior of Undisturbed Soft Clay in Wenzhou Considering Structural Property
Authors: Sun Miao Miao , Fang Hua Jian , Zhang Shi Min , Wan Xiao Li
Published: September 2014

Based on boundary surface elastoplastic theory, a boundary surface elastoplastic constitutive model is established which is considered both structural property and rheological behavior of soft clay with the method of taking Cam-Clay yield surface as boundary surface. The structural parameters are introduced to calculate structure-damage strain. Plastic volumetric strain is regarded as a function timetso that a rheological parameter is introduced. The constitutive model is validated by numerical analysis of triaxial rheological tests.
The Stellar Mass-Metallicity Relations of Star-Forming Galaxies
Authors: Shi Wei Bin , Ruan Gui Ping
Published: September 2014

We select 132 star-forming galaxies from SDSS DR5-7 with strong emission lines, including [OIII]4363 detected at a signal-to-noise larger than 5 σ. We determine their oxygen abundance, using the temperature-sensitive (Te) method. We fit the relation of stellar mass and metallicity in a least-squares linear fit to the median data. We compare our relation with previous results. We find the [OIII]4363 detected more massive galaxies have much lower oxygen abundances than the normal galaxies at the given stellar mass. Part could be explained by the sample themselves as low metallicity ones, but part could come from the method itself.
Study on the Grinding Machinability of 9Mn2V under Different Heat Treatment Processes
Authors: Guo Guo Qiang , Mu Ying Juan , Yang Chang Qi , Li Zhong Quan , Tian Ying , Chen Ming
Published: September 2014

The relationship between heat treatment processes and grinding performance of cold die steel 9Mn2V had been built in this paper. Serious meshy segregation of carbide, excessive amounts of retained austenite, coarse and inhomogeneous distribution of material structure were significant causes of grinding burn and grinding crack. In order to improve the abrasion-resistance and mechanical properties of workpiece material, cryogenic and tempering treatment were added. Disappear of meshy segregation of carbide, network carbide was within second grade, retained austenite content was within 4%, martensite became much more fine and homogeneous, all of these advantages could be obtained by adopting cryogenic and tempering treatment in twice. The grinding experiment results indicated that workpiece material 9Mn2V which using this process could provide superior grinding performance.
Effect of Cutting Fluid on Diamond Tool Life under Micro V-Groove Turning of Cobalt-Free Tungsten Carbide
Authors: Yui Akinori , Kitajima Takayuki , Krajnik Peter , Harano Katsuko , Sumiya Hitoshi , Ono Hajime
Published: September 2014

Micro-machining of hard dies and molds for optical parts or precision instruments is required to extend die and mold life. This paper investigates the effect of cutting fluid on diamond tool life under micro V-groove turning of cobalt-free tungsten carbide. Zinc dialkyldithiophosphate fluid (ZnDTP) displayed excellent diamond tool wear resistance in previous experiments. The performance of this cutting fluid is compared to newly developed vegetable oil based cutting fluid with dispersed MoS2 nanotubes. This paper investigates nanopolycrystalline diamond (NPD) tool life with a rake angle of 0° and-30° under continuous micro V-groove turning (i.e. face turning), of cobalt-free tungsten carbide using the developed cutting fluids. Superior diamond tool edge wear resistance is observed when using the dispersed MoS2 nanotubes in vegetable oil and using a NPD tool with a-30° rake angle.
An SPH Simulation on Vibration Assisted Abrasive Erosion of Hard Brittle Material in Abrasive Waterjet Machining
Authors: Lv Zhe , Huang Chuan Zhen , Zhu Hong Tao , Wang Jun , Yao Peng , Liu Zeng Wen
Published: September 2014

Abrasive waterjet machining (AWJ) is one of the fastest growing non-conventional machining methods. However, low pressure and fine abrasive implemented in AWJ precision machining for reducing the surface damage reduce the efficiency. Therefore ultrasonic vibration is considered to apply on the workpiece to improve the machining efficiency. In order to analyze the effect of the vibration on erosion in AWJ machining, smoothed particle hydrodynamics (SPH) is used to simulate the erosion process for avoiding the mesh distortion in finite element method (FEM) when simulating large deformation and high strain rate problems. The results show that the application of ultrasonic vibration can effectively improve the erosion rate due to the dynamics variation of the erosion process.
Radial Directional Vibration-Assisted Ductile-Mode Grinding of Engineering Ceramic
Authors: Imai Kenichiro
Published: September 2014

Engineering ceramics have received significant attention in the recent years owing to their exceptional mechanical properties, which are expected to be beneficial for engineering applications. However, it has always been a great challenge to realize ductile-mode grinding in engineering ceramics, with one of the critical obstacles being the heat generation that limits the removal rate. As a result, thermal damages are often observed on the ground surfaces. This paper presents the ductile-mode grinding. In the process the grinding wheel is excited along the radial direction by applying an ultrasonic vibration of frequency is 38.5 kHz and amplitude of 0-2 μm. The wheel comes in contact with the Al2O3 ceramic at constant forces 18-24 N. Experimental results indicate that the ground surface is devoid of thermal damages, when removal rate of the vibration-assisted process is approximately 1.5 times higher than without vibration.Keywords: ductile-mode grinding, radial directional vibration, hard and brittle material, engineering ceramic, thermal damage
Research on 3D Model Processing Technologies in the Application of Freeform Surface Machining
Authors: Zhu Jiang , Tanaka Tomohisa , Saito Yoshio
Published: September 2014

Currently CAD/CAM systems have become more and more common in automated manufacturing to enhance the accuracy and efficiency of machining process. On the other hand, 3D model processing technologies has long been researched in computer graphics (CG) fields. However, few algorithms were designed for the application of machining and manufacturing. In this paper, the current researches about the 3D model processing technologies in the application of freeform surface machining were introduced. These researches take the advantage of 3D model processing technology, and focus on the application of machining and manufacturing. They provide a new methodology to enhance the intelligence of the CAM, and improve the integration of CAD and CAM.
Distribution of the Convection Heat Transfer Coefficients of Grinding Fluids along the Contact Zone in High Speed Grinding
Authors: Jin Tan
Published: September 2014

The local distribution of the convection heat transfer coefficient (CHTC) of grinding fluids along the wheel-work contact zone under high speed grinding conditions has been investigated. A new approach has been proposed to derive the distribution of CHTCs along the contact zone by using the measured grinding temperatures and linking the distribution of local heat flux and heat partitioning to the workpiece, wheel and grinding chips. It has been found that the worktable speed is the key factor affecting the pattern of CHTC distribution, whilst the grinding speed strongly affects the overall magnitudes of the CHTCs. Down grinding mode is beneficial for achieving effective cooling under creep-feed conditions. The distribution of CHTC under faster worktable speeds shows a rather different pattern, which has to be considered when selecting the grinding mode and grinding fluid supply strategy.Keywords: Grinding, Fluid, Convective heat transfer coefficients, Temperature, High speed
A Study of Ultrasonically Added High Speed Turning for Stainless Steel - The Effects of Ultrasonic Oscillating Direction and Chip Breaker Shape and Material
Authors: Hara Keisuke , Sasaki Ryo , Koiwa Toshihiko , Isobe Hiromi
Published: September 2014

Ultrasonic cutting is a technique that can improve machinability such as fine surface, reduce tool worn out and etc. To improve processing speed of ultrasonic cutting is difficult due to the effects of tool oscillation are invalidated when cutting speed exceeds maximum tool oscillating velocity. In previous report, high speed principal direction ultrasonic turning without thrust direction vibration experiments for stainless steel were carried out to improve processing speed and products quality. In ultrasonic turning, tool worn out and built up edge generation were reduced compare with ordinary turning. Fine surface without thrust direction periodically cut marks were obtained in ultrasonic turning experiments. In this study, the effects of chip breaker shape and insert material were investigated. Surface roughness, chip worn out and built up edge generation were investigated in this study.