bluuebunny/crossref_metadata_2025 huggingface dataset:
Implementierungsstand und Erfahrungen der Stakeholder mit der Zuhause-Behandlung in psychiatrischen Modellvorhaben (nach §64b SGB V) – Eine Mixed-Methods Untersuchung
Authors: Schwarz Julian , Zeipert Manfred , Ignatyev Yuriy , Indefrey Sonja , Rehr Burkhard , Timm Jürgen , Heinze Martin , Peter Sebastian von
Published: July 2019

Ziel Untersuchung des Implementierungsstands und der Erfahrungen der Stakeholder mit der Zuhause-Behandlung (=ZHB) in der Modellversorgung nach §64b SGB V (=MV).

Methodik Standardisierte Befragung von 381 Patienten aus 8 Kliniken der MV und inhaltsanalytische Auswertung von Fokusgruppen und Interviews mit Patienten, Angehörigen und Mitarbeitern (n=37). Struktur-, prozess- und leistungsbezogene Daten wurden ergänzend abgefragt.

Ergebnisse Die ZHB der MV ist äußerst heterogen implementiert, insbesondere zwischen ländlichen und städtischen Regionen. Aus Sicht der Stakeholder wird eine längerfristige, flexible und settingübergreifende Versorgung geboten, die alltagsintegrativ wirkt und häufig erst mit zunehmender Inanspruchnahme als hilfreich bewertet wird.

Schlussfolgerung Eine starke Orientierung an den Bedürfnissen der Patienten und regionalen Besonderheiten zeichnet die ZHB aus. Es lassen sich Implikationen zur Weiterentwicklung von stationsäquivalenter Behandlung ableiten.
Diagnostik und Therapie des Ösophaguskarzinoms
Authors: Lorenzen Sylvie , Schulz Dominik , Quante Michael , Combs Stephanie , Gertler Ralf
Published: July 2019

Trotz Fortschritten in der Behandlung des Ösophaguskarzinoms ist das 5-Jahresüberleben der Patienten mit 15–20 % vergleichsweise gering. Im Frühstadium ist der Tumor asymptomatisch, sodass die Diagnose meistens eher zufällig im Rahmen einer Endoskopie zur Abklärung anderer Symptome gestellt wird. Beim Ösophaguskarzinom handelt es sich um 2 unterschiedliche Tumorentitäten, das Adenokarzinom und das Plattenepithelkarzinom, die sich sowohl in der Ätiologie, der Epidemiologie als auch in Therapie und Prognose unterscheiden. Das Leitsymptom von Karzinomen des Ösophagus ist die Dysphagie oder Odynophagie. Um eine optimale, an das Stadium angepasste Therapie zu finden, ist ein möglichst genaues Staging im Rahmen der TNM-Klassifikation nötig. Die hierfür wichtigsten Untersuchungen sind die Ösophagogastroduodenoskopie (ÖGD) mit Probeentnahme, die Endosonografie und die Computertomografie (CT). Bei allen Patienten mit neu aufgetretener Dysphagie, gastrointestinaler Blutung, rezidivierender Aspiration, rezidivierendem Erbrechen, Dyspepsie, Gewichtsverlust und Inappetenz sollte leitliniengerecht eine hochauflösende ÖGD durchgeführt werden. Weitere gezielte diagnostische Maßnahmen richten sich nach der Tumorlokalisation. Beim Plattenepithelkarzinom stehen für alle nicht fernmetastasierten Tumorstadien die chirurgische Resektion, die Radio(chemo)therapie oder die Kombination dieser beiden als neoadjuvante Radiochemotherapie, gefolgt von der Operation zur Verfügung. Sowohl die Operation (mit oder ohne neoadjuvante Radio(chemo)therapie) als auch die definitive Radio(chemo)therapie wird in kurativer Intention durchgeführt. Mittlerweile werden fast alle Patienten mit Adenokarzinomen des ösophago-gastralen Übergangs (AEG) in einem lokal fortgeschrittenen Tumorstadium (uT3, N0/ + , cM0) einem multimodalen Therapiekonzept zugeführt. Eine neoadjuvante oder perioperative Therapie gefolgt von OP kann bei gutem Ansprechen nicht nur die lokale Resektabilität, sondern auch das Gesamtüberleben im Vergleich zur alleinigen OP verbessern.
Diagnostik und Therapie des Magenkarzinoms
Authors: Reim Daniel , Lorenzen Sylvie , Bachmann Jeannine , Novotny Alexander
Published: July 2019

Mögliche Indizien für ein Magenkarzinom sind Dysphagie und rezidivierend auftretendes Erbrechen. Zur genauen Abklärung sollte eine Ösophago-Gastro-Duodenoskopie empfohlen werden. Zur histologischen Sicherung eines verdächtigen Befundes muss eine Gewebeprobe entnommen werden. Nach Bestätigung eines malignen Tumors wird mittels einer Endosonografie die Eindringtiefe des Tumors in die einzelnen Schichten des Magens untersucht. Die einzige Option zur Kuration des Magenkarzinoms ist die chirurgische Therapie. Ziel der Behandlung ist eine komplette Tumorentfernung einschließlich der abführenden Lymphdrainagesysteme. Nach der Erfassung des klinischen Stadiums – Magenfrühkarzinome (Stadium 0/IA), lokal fortgeschrittene Magenkarzinome (Stadium IB–IIIC), fernmetastasierte Tumoren (Stadium IV) – ergeben sich abhängig von der Tumorsituation, unterschiedliche chirurgische Konsequenzen. Bei Beschränkung auf die Mukosa (T1m) kann eine lokale Exzision ausreichend sein, da die Wahrscheinlichkeit der Lymphknotenmetastasierung in diesem Stadium bei nahezu 0 % liegt. Im lokal fortgeschrittenen Stadium erfolgt prinzipiell präoperativ zunächst eine neoadjuvante (Radio-)Chemotherapie. Beim metastasierten Magenkarzinom kann eine Kuration durch eine chirurgische Resektion nicht mehr erreicht werden. Das Ziel chirurgisch palliativer Maßnahmen ist die Therapie lokaler Komplikationen wie Tumorblutung, Stenose oder Tumorperforation. Mittlerweile werden fast alle Patienten mit einem lokal fortgeschrittenen Tumorstadium (uT3, N0/ +) einem multimodalen Therapiekonzept zugeführt. Eine neoadjuvante oder perioperative Therapie kann bei gutem Ansprechen nicht nur die lokale Resektabilität, sondern auch das Gesamtüberleben verbessern.
Diagnostik und Therapie des kolorektalen Karzinoms
Authors: Wilhelm Dirk , Klare Peter , Nennstiel Simon , Dapper Hendrik , Combs Stefanie , Liotta Lucia , Quante Michael
Published: July 2019

Das kolorektale Karzinom (KRK) ist der häufigste Tumor des Gastrointestinaltraktes, weltweit der zweithäufigste Tumor bei Frauen und der dritthäufigste bei Männern. Die Koloskopie ist in Deutschland seit fast 20 Jahren als endoskopische Vorsorgeuntersuchung anerkannt. Die Steigerung der Polypen- und Adenomdetektionsrate ist ein stetiges Bestreben aller Endoskopiker. Anspruch jeder endoskopischen Therapie ist die komplette Entfernung des verdächtigen Befundes. Nach der aktuellen S3-Leitlinie wird zur Behandlung von Tumoren des unteren und mittleren Rektumdrittels im Stadium II/III (cT3/4 und/oder cN+) und im oberen Rektumdrittels bei Risikofaktoren eine neoadjuvante Radiochemotherapie (RCTx) empfohlen. Das Nebenwirkungsspektrum leitet sich maßgeblich aus dem Bestrahlungsvolumen, der Einzeldosis pro Fraktion, sowie der Gesamtdosis, der Behandlungsdauer und der konkomitant eingesetzten Chemotherapie ab. Während das Kolonkarzinom in der nicht metastasierten Situation primär operiert wird, stellt die neoadjuvante R(C)Tx den Standard beim lokal fortgeschrittenen Rektumkarzinom dar. Eine adjuvante Chemotherapie ist bei Patienten mit Kolonkarzinom im UICC-Stadium II mit Risikofaktoren und Stadium III indiziert. Die Therapie bei Kolonkarzinom in Stadium UICC IV richtet sich nach der Lokalisation und Anzahl der Metastasen sowie dem Allgemeinzustand des Patienten.
A Rare Case of Primary Upper Extremity Varicose Veins
Authors: Bhargavi Ramisertti , Iragavarapu Tammiraju , Kumar A Aswini
Published: July 2019

The incidence of varicosities of upper extremity is far most uncommon from that of lower extremity varicose veins for varied reasons even though the causes are almost the same. Here, the authors present a case of right upper limb varicose veins in a 55-year-old female who is a housewife. After ruling out all the secondary and congenital causes on clinical and Doppler study, the authors diagnosed it as a case of primary upper extremity varicose veins. They referred the case to a vascular surgeon but the patient denied the surgery, and is lost to follow-up. Hence, the authors report this case of primary upper limb varicosities as the incidence is very low when compared with lower extremity, and not much of literature is available except for a few case reports.
Investigating the Balance between Th17/Treg Cells in Rheumatoid Arthritis and its Association with Disease Activity
Authors: Taha Hanan Aly , Hozayen Walaa G. , Okasha Ahmed Mohamed , Ahmed Amr E. , Shata Manar Ali A. , Abdel-Naem Emad A. , Maher Sheren Esam
Published: July 2019

Rheumatoid arthritis (RA) is a systemic autoimmune disorder characterized by articular inflammation and joint destruction. The mechanism of RA pathogenesis is not fully understood, but humoral and cellular immunity are known to be involved. CD4+ T lymphocytes and cytokines released by these cells are suggested to initiate inflammation in RA. This study aimed to assess T helper 17 (Th17)/regulatory T (Treg) cell ratio and its correlation with disease activity in adult and juvenile RA. This study included 80 patients, with RA, including 40 adults (mean age: 36.4 ± 11.1 years and 40 juveniles mean age: 12.7 ± 2.2 years), and 80 healthy controls. For all patients and control subjects, patient and disease characteristics; laboratory tests for complete blood count, erythrocyte sedimentation rate, C-reactive protein (CRP), rheumatoid factor, anti-cyclic citrullinated peptide (anti-CCP), anti-nuclear antibodies (ANA), and flow cytometry to determine the numbers of Th17 and Treg cells. There was a statistically significant increase in the Th17/Treg ratio in patients with active disease compared with those with inactive disease for both adult and juvenile RA compared with controls. However, a similar significant difference was not observed between those with inactive adult and juvenile RA and controls. There were significant positive correlations between the Th17/Treg ratio and disease activity score 28 (DAS28), CRP, anti-CCP, and ANA in active adult and juvenile RA. The Th17/Treg ratio was increased in active form of adult and juvenile RA compared with inactive RA and control, indicating the Th17/Treg ratio as a potentially useful marker of disease activity.
Exploration and Initial Development of Text Classification Models to Identify Health Information Technology Usability-Related Patient Safety Event Reports
Authors: Fong Allan , Komolafe Tomilayo , Adams Katharine T. , Cohen Arman , Howe Jessica L. , Ratwani Raj M.
Published: July 2019

Background With the pervasive use of health information technology (HIT) there has been increased concern over the usability and safety of this technology. Identifying HIT usability and safety hazards, mitigating those hazards to prevent patient harm, and using this knowledge to improve future HIT systems are critical to advancing health care.

Purpose The purpose of this work is to demonstrate the feasibility of a modeling approach to identify HIT usability-related patient safety events (PSEs) from the free-text of safety reports and the utility of such models for supporting patient safety analysts in their analysis of event data.

Methods We evaluated three feature representations (bag-of-words [BOWs], topic modeling, and document embeddings) to classify HIT usability-related PSE reports using 5,911 manually annotated reports. Model results were reviewed with patient safety analysts to gather feedback on their usefulness and integration into workflow.

Results The combination of term frequency-inverse document frequency BOWs and document embedding features modeled with support vector machine (SVM) with radial basis function (RBF) had the highest overall precision-recall area under the curve (AUC) and f1-score, 72 and 66%, respectively. Using only document embedding features achieved a similar precision-recall AUC and f1-score performance with the SVM RBF model, 70 and 66%, respectively. Models generally favored specificity and sensitivity over precision. Patient safety analysts found the model results to be useful and offered three suggestions on how it can be integrated into their workflow at the point of report entry, in a visual dashboard layer, and to support data retrievals.

Conclusion Text mining and document embeddings can support identification of HIT usability-related PSE reports. The positive feedback received on the HIT usability model shows its potential utility in real-world applications.
Finite-pulse-width effect on quantum sensing for an asynchronous alternating-current magnetic field to dynamical decoupling sequences
Authors: Ishikawa Toyofumi , Yoshizawa Akio , Mawatari Yasunori , Kashiwaya Satoshi , Watanabe Hideyuki
Published: July 2019

Quantum sensors based on the electron spin states of nitrogen vacancy centers in diamond have found wide application in magnetometry and nuclear spin magnetic resonance measurements. Previously, we have theoretically and experimentally investigated the effect of finite pulse width on quantum sensing for synchronous alternating-current (AC) magnetic fields to dynamical decoupling sequences [T. Ishikawa et al., Phys. Rev. Appl. 10, 054059 (2018)]. However, many biological and condensed-matter systems exhibit fluctuating AC fields over time, and thus, our model needs modifications because of additional non-ideal conditions in practical measurements. Here, we investigate the effects of finite pulse width of multiple-pulse decoupling sequences on quantum sensing for asynchronous AC magnetic fields. For this purpose, we use a spin ensemble of nitrogen vacancy centers in an isotopically purified diamond film. We reveal through experiments that the finite-width pulse causes shifts in AC magnetometry signals in a free-precession-time plot. In addition, our results indicate that the finite-width pulse affects the amplitude of magnetometry signals, implying that the finite-pulse-width effect should be taken into account for realizing accurate measurement of the frequency and amplitude of asynchronous AC magnetic fields.
Extraordinary dimorphism in the Phyllograptid Harrisgraptus n. gen. from the early Bendigonian (Early Floian, Early Ordovician) of Victoria, Australia
Authors: VandenBerg A.H.M.
Published: July 2019

Two graptolites from the early Bendigonian (Early Floian, Early Ordovician) formerly placed in Didymograptus, D. eocaduceus Harris, 1933 and D. hemicyclus Harris, 1933, are shown to be members of a single population that shows extraordinary dimorphism. This is mainly expressed in the tubarium habit which ranges from strongly reclined to horizontal, and in stipe width which changes systematically with tubarium shape. The population is placed in the new genus Harrisgraptus and placed in the family Phyllograptidae, characterised by well-developed sicular and thecal rutella.
Do heat alerts save lives?
Authors: Nicholls Neville
Published: July 2019

Short-term heat events (e.g. heat waves) and cold events cause more loss of life in Australia than any other weather or climate extreme. They are also, relative to other extremes, easier to predict, exhibit larger spatial scales and thus affect more people, and responses that can reduce the excess mortality associated with them are better understood and more readily actionable. There is evidence that the heat-event alert system introduced in Victoria in 2009, and subsequently enhanced, saves lives. Improving and further enhancing heat-alert systems will reduce the costs, both human and financial, associated with heat events. This paper discusses whether a cold alert system is required, along with the possible reasons why the excess mortality after a hot event is of shorter duration than after a cold event, and why winter mortality typically exceeds summer mortality even for similar temperatures.
Timing of breeding and female fecundity of the greater bilby (Macrotis lagotis) in the temperate zone of South Australia: implications for translocations of a previously widespread species
Authors: Berris Karleah K. , Cooper Steven J. B. , Breed William G. , Carthew Susan M.
Published: July 2019

Context Many of Australia’s threatened mammals were once widespread across the continent and present in both arid, semiarid and temperate habitats. However, data on breeding biology can be lacking for some climatic regions due to local extinctions of populations. The breeding biology of the greater bilby (Macrotis lagotis) has previously only been studied in captive colonies or free-ranging arid zone populations. Between 1997 and 2005, captive-bred bilbies were released at two sites in temperate South Australia. These populations provided an opportunity to determine whether bilbies adopt a seasonal reproductive strategy in the temperate zone, where this species has not been present since the early 1900s. Aims To determine the season of births, litter size and female reproductive potential in two free-ranging populations of the bilby in the temperate zone of South Australia. Methods Bilbies were regularly cage-trapped at Venus Bay Conservation Park and Thistle Island between August 2007 and April 2010 to obtain data on reproductive activity in both populations. Key results Births of pouch young in both populations occurred in winter (June–August), spring and early summer, but not between February and mid-May. Males had a significantly smaller mean testes size relative to head length in late summer, when breeding activity ceased. Average litter size at pouch emergence was between 1.00 and 1.47 pouch young, with females producing up to three litters per annum. The mean head length of females that successfully raised twins was significantly larger than that of females who raised a single pouch young. Conclusions The seasonal breeding pattern observed in the present study differs from that of year-round reproductive activity in captivity and the arid zone. The present study suggests that female body size influences fecundity, and that releasing large females at the start of the breeding season in temperate areas may maximise the initial rate of increase of a translocated bilby population. Implications The present study suggests previously widespread species such as the bilby can adapt their reproductive strategy to suit local conditions. Cessation of breeding in autumn, as observed in this study, has also been observed in other bandicoot species in southern Australia.
Pets and pests: a review of the contrasting economics and fortunes of dingoes and domestic dogs in Australia, and a proposed new funding scheme for non-lethal dingo management
Authors: Brink Henry , Purcell Brad V. , Letnic Mike , Webster Hugh S. , Appleby Robert G. , Jordan Neil R.
Published: July 2019

Carnivore conservation and management is complex and expensive, and significant ongoing management costs may inhibit the development of new tools and any subsequent transition away from lethal control. We review and compare the economic costs and benefits of dingoes and domestic dogs in Australia and suggest that public affinity for domestic dogs may be co-opted into yielding more positive management outcomes for dingoes. Whereas Australians spend over AU$10 billion annually on purchasing and maintaining 4.2 million domestic dogs, landowners and government spend at least AU$30 million attempting to limit the density and distribution of dingoes, feral dogs, and their hybrids. These contrasting investments highlight the dual response of society towards domestic and wild members of the Canis genus. We suggest that a modest conservation levy on the sale of pet dogs or dog food, or both, could secure long-term funding to support efficacious non-lethal management of dingo impacts. A modest levy could generate AU$30 million annually, funding the development of non-lethal dingo-management tools without compromising existing management practices while new tools are investigated. Ultimately, a transition away from controlling dingoes through culling or exclusion fencing, to managing the negative impacts of dingoes could result in both more successful and sustainable management outcomes of dingoes and support the ecological, cultural and economic benefits they confer as Australia’s apex predator.
One discourse to rule them all? Narrating the agenda for labor market policies in France and Germany
Authors: Bandelow Nils C , Hornung Johanna
Published: July 2019

Despite different institutional and situational conditions, the recent French labor market reforms bear a strong resemblance to the labor market reforms in Germany in the early 2000s. Governments at both points in time turned away from the conservative welfare state model and failed to appropriately legitimize their reforms toward the public as well as their originally partly social-democratic electorate. Given the diverging conditions which are expected to lead to different strategies of legitimization, this contribution inquires after the narrative stories with which the corresponding acting government framed its reforms publicly. Surprisingly, despite the large differences that the two governments faced, the analysis shows that the respective narratives stories were not only similar but can be assigned to certain programmatic groups that used the narratives to push their own policy program and place themselves in power positions. In doing so, the contribution establishes a yet missing link between the recently established Programmatic Action Framework (PAF) and the concept of narrative stories and discourse in policy analysis, thereby adding to both research strands. This link lies in the observation that programmatic groups use narratives to strengthen in-group identification and thus improve their chances of success, which makes dominant narratives an important indicator of programmatic groups. However, when legitimizing reforms – even if these are transferred from other country experiences – it is imperatively important to embed the strategies of legitimization in the national context.
What Do Patients Find Restrictive About Forensic Mental Health Services? A Qualitative Study
Authors: Tomlin Jack , Egan Vincent , Bartlett Peter , Völlm Birgit
Published: July 2019

Forensic care settings are often isolated spaces with high levels of security. Where these settings are overly restrictive, this can affect recovery, autonomy and the therapeutic milieu. It is not clear what phenomena patients themselves identify as restrictive and how, subjectively, they experience these. Semi-structured interviews were conducted with 18 patients in secure hospitals in England. Respondents included male and female patients with mental illness or personality disorders on both civil and criminal detentions. The results suggest a model of restrictiveness consisting of five themes: (1) the antecedent conditions to restrictive phenomena; (2) restrictive phenomena themselves; (3) how these are enacted, (4) how these phenomena were subjectively experienced by patients; and (5) the consequences of these phenomena as expressed by patients. Restrictiveness understood in this way is broader than “least restrictive practices” typically understood as restraint, seclusion and forced medication. Respondents’ comments encourage us to rethink the unintended effects of placing individuals within secure hospitals.
Two Kinds of Exploratory Models
Authors: Massimi Michela
Published: July 2019

I analyze the exploratory function of two main modeling practices: targetless fictional models and hypothetical perspectival models. In both cases, I argue, modelers invite us to imagine or conceive something about the target system, which is known to be either nonexistent (fictional models) or just hypothetical (in perspectival models). I clarify the kind of imagining or conceiving involved in each modeling practice, and I show how each—in its own right—delivers important modal knowledge. I illustrate these two kinds of exploratory models with Maxwell’s ether model and supersymmetric particle models at the Large Hadron Collider.
What Is the Harm in Gendered Citation Practices?
Authors: McCusker Darcy
Published: July 2019

Women are cited less frequently than men in a variety of scientific fields. Drawing theoretical resources from Fricker and Hookway, I argue that these gendered citation practices constitute a form of participatory epistemic injustice insofar as they prevent female scientists from fully engaging in the epistemic practices of science. Furthermore, Longino’s notion of “uptake” gives us a way of understanding gendered citation practices as an epistemic harm accrued not simply by individuals but by scientific communities as a whole. Finally, I discuss the cumulative harms of this kind of participatory epistemic injustice for individuals and for marginalized groups.
Deep Learning for HRRP-based Satellite Recognition
Authors: Lu W , Zhang Y S , Huo Y R , Lin C Y
Published: July 2019

An approach that employs deep learning technology is presented to recognize satellites based on radar high-resolution range profile (HRRP) data. We focus on extracting effective satellite recognition features in this paper. Thus, a deep learning model is constructed by gated recurrent unit (GRU) neural network and support vector machine (SVM) to extract more abstract and accurate features. Firstly, the radar HRRP data of four satellites is obtained by simulation. And data preprocessing has been done according to HRRP characteristic. Next, a GRU-SVM model is set up and some deep learning skills, such as dropout and cross validation, have been applied to improve recognition accuracy. The training results of GRU neural network show their effectiveness. In order to demonstrate the superiority of this approach, five other feature extraction methods have been used as a comparison based on clean satellite HRRP data and noisy data. The experiment results show that the presented GRU-SVM model could recognize satellites effectively and accurately, and has better recognition performance and noise robustness compared with five other methods.
A Class-Incremental Learning Method Based on One Class Support Vector Machine
Authors: Yao Chengfei , Zou Jie , Luo Yanan , Li Tao , Bai Gang
Published: July 2019

Class-incremental learning refers to the problem that the number of classes increases dynamically in the training stage. In this paper, a method based on one class support vector machine (OCSVM) is proposed for class incremental learning. The basic idea of the proposed method is that one class model is used to learn the distribution of new class, and then the knowledge learned and previous models are used for class incremental learning. The proposed method does not need to store all training data and makes full use of the learned information, so it has lower memory cost and time consumption. Also, the proposed method can build model when only one class is available. Compared with OC2MC, CIL, NN, the proposed method also achieves competitive results on different datasets.
Cooperative Differential Game Guidance Law for Two Pursuers and One Evader
Authors: Guo Z Q , Zhou S L , Yan S
Published: July 2019

For the nonlinear engagement between two pursuers and a single evader, in which small angle deviation assumption or other linearization conditions may not be applicable, a cooperative guidance law is analyzed and derived in the framework of a zero-sum two-person differential game. State-dependent Riccati-equation method is used to obtain the suboptimal solutions of the pursuit-evasion problem by choosing the line of sight angular rates as state variables, and closed-loop form guidance strategies that can be used online for the players are derived. Time-to-go estimations are not had to be taken into account to apply the guidance law proposed. Nonlinear two-dimensional simulations are carried out to validate the performance of the cooperative guidance law, and the comparison with a current cooperative linear quadratic differential game guidance law is made.
A Review of the Research on Dialogue Management of Task-Oriented Systems
Authors: Jiang Zhao Yin , Ling Li Yan , Lin Min
Published: July 2019

Scholars pay more and more attention to the spoken dialogue system after the emergence of deep learning technology. The task-based dialogue system has become one of the most important branches in the field of spoken dialogue systems. Dialogue management is the core of the task-based dialogue system, and its research theory and technology have been gained extensive attention. This paper summarizes the research progress and current situation of task-based dialogue system and dialogue management strategy. Firstly, it summarizes the status of the task-based dialogue system models and compares their advantages and disadvantages. Then it focuses on the analysis of various dialogue management research strategies from the perspective of model theory and research methods. Finally, it looks forward to the future research direction of task-oriented dialogue system combined with dialogue management.
Research of OpenMV Intelligent Monitoring and Disease Identification System
Authors: Wang Xiu-qing , Chen Qi , Yao Shi-jia , Jia Xiao-yun
Published: July 2019

Aiming at the requirement of video surveillance and disease identification in modern greenhouse, this paper designed a system consisted by greenhouse intelligent monitoring and disease identification system. At first, this paper using OpenMV camera designed a disease monitoring system which could recognize and collect disease images automatically by multi-color thresholds tracking. Then, this paper designed a cuckoo search and BP neural network collaborative search (CSBP-CS) algorithm, the algorithm combined the global search capability of Cuckoo Search(CS) and back-propagation algorithm of BP algorithm to optimize weights and thresholds collaboratively. this paper took three tomato diseases and normal leaves as research objects, firstly step was to separate the disease spots from disease images, then was to extract 56 classification features and select 47 excellent classification features by relief F to construct CSBP-CS RF classifier. Finally, this paper compared the classification accuracy of CSBP-CS with CSBP-CS RF network and analyzed the effectiveness of relief F. The simulation results showed that the average correct recognition rate of the CSBP-CS RF was approximately equal to CSBP-CS under the same conditions, but CSBP-CS RF is more simple, so Relief F can help to speed up the efficiency of CSBP-CS.
Intelligent Recognition of Production Date Based on Machine Vision
Authors: Sun Xiaona , Gao Guohua , Tian Boxing , Li Bowen , Zhang Sai , Huang Juan
Published: July 2019

Aiming at the problems of large work intensity, low intelligence level and low efficiency, the production date intelligent recognition algorithm was designed. The algorithm optimizes the image preprocessing algorithm, combines the grid statistical method and the projection density method to extract the feature vector, and uses the support vector machine algorithm to identify the production date. The experimental results show that the algorithm can accurately identify the production date and achieve the expected recognition effect. Has practical significance.
Multi-layer Feature Fusion Network with Atrous Convolution for Pedestrian Detection
Authors: Li You , Zhang Qingxuan , Zhang Yulei
Published: July 2019

In this paper, we present a simple but effective framework K-AFPN that incorporates feature pyramid method for small-size pedestrian detection, fully utilizing the lower-layer detail features and higher-layer semantic features. The method not only enhances the robustness of the features, but also improves the discrimination of the feature maps, achieving competitive accuracy. In addition, atrous convolution is used to optimize the network for high-resolution feature maps, avoiding information loss caused by frequent down or up sampling. On top of the backbone network, K-means algorithm is used to obtain optimal initial anchor base sizes, which reduces computational costs and improves location accuracy. Hence, our method pays more concentration on pedestrians, especially those of relatively small size. Comprehensive experimental results on two classic pedestrian benchmarks illustrate the effectiveness of the proposed approach.
Design and Performance Analysis of a Lateral Thrust Measuring Device
Authors: Ren Zongjin , Hua Mei , Zhang Jun , Li Yang
Published: July 2019

This paper takes multi-dimensional force measurement of lateral force power unit as research objective, and a piezoelectric multi-dimensional force measuring device with piezoelectric quartz crystal as force sensitive component is designed. First, the mathematical model between sensors’ output and measured lateral force is established by theoretical derivation. The relationship between the force applied to measured object and measuring device’s output is obtained through the finite element analysis, which verifies the measurement performance of measuring device. On the other hand, through ANSYS model analysis, a conclusion that the first natural frequency of measuring device is 1467.8Hz can be obtained, and the dynamic performance of measuring device is good, which enables accurate measurement of real-time varying lateral force.
Review of Intent Detection Methods in the Human-Machine Dialogue System
Authors: Liu Jiao , Li Yanling , Lin Min
Published: July 2019

Spoken language understanding is an important part of the human-machine dialogue system, intent detection is a sub-task of spoken language understanding, and it is very important. The accuracy of intent detection is directly related to the performance of semantic slot filling, and it is helpful to the following research of the dialogue system. Considering the difficulty of intent detection in human-machine dialogue system, the traditional machine learning method cannot understand the deep semantic information of user’s discourse. This paper mainly analyzes, compares and summarizes the deep learning methods applied in the research of intent detection in recent years, and further considers how to apply deep learning model to multi-intent detection task, so as to promote the research of multi-intent detection methods based on deep neural network.
Integrated Modelling and Static Experiment of a Novel Tandem Ducted Fan Flying Robot
Authors: Liu Lei , Xiang Changle , Xu Bin , Fan Wei
Published: July 2019

This paper puts forward a novel tandem ducted fan flying robot which has nice passivity and compact structure aiming at operating in complicated and dangerous environment. The structure of its ducted coaxial twin-rotor with reverse rotation is unconventional and make its aerodynamic characteristics much more complex. To solve the problem, the modelling method of the traditional open rotors with the blade element theory and the momentum theory is extended to the ducted coaxial twin-rotor structure, and the integrated dynamic model of the ducted fan flying robot is established. After the modelling, a static lift experiment has been carried out, and the aerodynamic model of the ducted coaxial twin-rotor structure is modified based on the test results.
Short-Term Photovoltaic Generation Forecasting Based on LVQ-PSO-BP Neural Network and Markov Chain Method
Authors: Wang Xiran , Ma Xue , Lou Suhua , Peng Fei , Wu Song
Published: July 2019

With the rapid development of solar photovoltaic generation, the effective prediction of photovoltaic is of great significance to mitigate its impact on power system. According to the analysis of main factors which affect power output of photovoltaic system, a short-term power forecasting model based on back propagation(BP) neutral network and LVQ-PSO-BP neural network and Markov chain method was established. The weather is clustered and distinguished by using learning vector quantization(LVQ) and the particle swarm optimization(PSO) is used to optimize BP neural network weights and thresholds, improving forecasting network training speed. Finally, daily predictive value is corrected by Markov chain method to improve short-term photovoltaic generation forecasting precision. The simulation results indicate that the proposed method can accelerate the speed of searching optimums, improving the classification accuracy of weather types and the precision of the photovoltaic generation output effectively.
LM Algorithm Neural Network Predictive Control of FlexRay Bus System
Authors: Liu Zhi-chao , Wang Yi
Published: July 2019

In view of the uncertainty of data transmission due to the irregular data flow in the network and the limitation of network bandwidth resources, which makes the control performance and stability of FlexRay network decrease when data is transmitted at high speed and the reliability and safety of the control system can not be guaranteed, this paper proposes a method based on the Levenberg-Marquardt (LM) algorithm for neural network predictive control of the FlexRay bus. The method can predict the next moment operating state of the car network according to the current moment working state of the FlexRay car network to adaptively adjust task workload to adapt to changes in vehicle network system load and improve the reliability and stability of FlexRay network control system. The simulation results show that the neural network predictive control has good adaptability and robustness, which improves the control performance of the FlexRay automotive networked control system effectively.
Temperature influence on the composition of high-carbonic Domanic rocks organic matter during hydrothermal treatment in CO2 atmosphere
Authors: Kayukova G , Mikhailova A , Nasurova Z , Sotnikov O , Nazimov E
Published: July 2019

Depositions of the Domanic type in the territory of Tatarstan are stratigraphically associated with carbonate-siliceous deposits of the Upper Devonian part of the section. These deposits, enriched with organic matter, are characterized by the ability to generate liquid and gaseous hydrocarbons and accumulate them in the form of deposits of unconventional type. In this paper, the results of geochemical studies of rock samples from the depth interval 1705-1728 m of the Semi-Bug-Buregian deposits of the Berezovskaya area of the Romashkino oil field are presented. It is shown that the rocks, in spite of the narrow core sampling interval, differ in the content of quartz and calcite, as well as in the admixture of minerals such as muscovite, pyrite and albite. The content of organic matter according to thermal analysis data varies from 1.97 to 35.48 %, a significant part of which falls on an insoluble organic matter - kerogen. The influence of hydrothermal processes on the production capacity of the organic matter of these rocks is shown to generate hydrocarbons at temperatures of 200, 250, 300 and 350°C in a carbon dioxide medium. The yield and quality of the products obtained is estimated. The results of the research give grounds to believe that: firstly, the rocks of the Berezovskaya area of the Romashkino oil field have not fully realized their oil potential and the hydrothermal effect on them contributes to the thermal maturation of organic matter in the rock; second, at these temperatures, more intensive recovery of free hydrocarbons from the rock occurs. Thus, the hydrocarbon potential of the house rock is determined by the composition and content of liquid bituminous components that are in a free state in the rock, as well as the products of destruction of tar-asphaltene substances and macromolecules of insoluble kerogen and, consequently, it can be successfully realized with further optimization of hydrothermal processes directed to increase the quantity and improve the quality of the extracted fluids.
Acid compositions for enhanced oil recovery from carbonate reservoir
Authors: Ibragimova D , Ivanova I , Ivanov D , Akhmetzanova R
Published: July 2019

This work is devoted to selection of acidic compositions for use in the process of acid fracturing of carbonate oilfields. The selection is based on the stability of the compositions and their compatibility with oil and corrosion influence on oilfield equipment. The object of research was highly viscous bituminous oil and carbonate rock of Tatarstan Republic (Russian Federation). The object of research was oil and carbonate rock samples from the Vereian horizon of the Vishnevo-Polyanskoe oil field, which is characterized by oil containing in carbonate rocks. The chosen oil can be pertained to highly viscous bituminous oil according to its density and viscosity, what makes the process of its extraction from oil formations complicated. As the result there were selected two acid compositions which contained hydrochloric acid 15 wt %, demulsifier, dispersant, iron converter (for Fe3+ 2000 and 5000 ppm concentration) and corrosion inhibitor. The effectiveness degree of selected compositions was also demonstrated.
Multifrequency (9 and 95 GHz) EPR study of stable radicals in asphaltenes fractions of oils and bitumen
Authors: Gafurov M. , Mamin G. , Ganeeva Yu. , Yusupova T. , Volodin M. , Gracheva I. , Orlinskii S.
Published: July 2019

Structural characterization of asphaltenes in complex systems such as native hydrocarbons is in the focus of scientific and industrial interests since many years. Various analytical tools and approaches are used for that. We present the results of our study of asphaltene fractions A1 and A2 with the predominantly “island” type and “archipelago” type asphaltene molecules by conventional and pulsed electron paramagnetic resonance (EPR) at X-band (9 GHz) and W-band (95 GHz) with aim to expand the abilities of EPR technique for asphaltene characterization. Shift to the higher frequencies allows to separate spectrally the contributions from paramagnetic complexes of different origin, define the EPR parameters more accurately comparing to the conventional X-band EPR. Application of pulsed techniques allows (at least partially) to separate the radicals in time domain. Features of the obtained spectra are described. Electronic relaxation times are found to be different for stable “free” radical for A1 and A2 fractions. We suggest that the obtained results can be used for investigation of various petroleum systems.
95 GHz electron paramagnetic resonance of LiYF4: Nd3+ crystal in parallel orientation
Authors: Mamin G , Murzakhanov F. , Razina A. , Kurkin I. , Baibekov E. , Orlinskii S.
Published: July 2019

We report the observation of the conventional and pulsed electron paramagnetic resonance (EPR), electron-nuclear double resonance (ENDOR) spectra from 19F and 7Li nuclei on impurity Nd3+ ions in LiYF4 crystal doped with Nd3+ ions in parallel orientation at microwave frequency of ν ≈ 95 GHz (W-band). The resolved structure from the nearby and remote nuclei in spectra is observed. The outcome shows that LiYF4:Nd3+ system can be exploited as a convenient matrix for performing spin manipulations and adjusting quantum computation protocols while ENDOR technique is usable for the investigation of electron-nuclear interaction with the nuclei of the system.
Thermal properties of the bituminous sandy rocks of the Volga-Ural oil and gas province.
Authors: Mullakaev A I , Khasanov R R
Published: July 2019

Natural accumulations of bitumen in the Volga-Ural oil and gas province are unconventional sources of hydrocarbons. They are mainly concentrated in the Republic of Tatarstan and are confined to psammitic (sandy) rocks of lower Permian age (Sheshmian Horizon of Ufimian Stage). Sands and sandstones belong to the greywacke group, so rock-forming minerals are represented by quartz, feldspars and effusive fragments. The internal structure of the bitumen-containing reservoir is characterized by an extreme degree of lithological and mineralogical heterogeneity, which is the result of the imposition of a whole complex of processes. Since the beginning of the development of bitumen deposits by thermal methods, the issues of studying the internal heterogeneity and its influence on the production process become particularly acute. Internal reservoir heterogeneity may prevent uniform heating and the formation of a full-fledged steam chamber. Sands and sandstones of the productive part are divided into three rock types (bituminous sands, bituminous sandstones and residual bituminous sandstones). Thermal studies using methods of thermogravimetry (TG) and differential scanning calorimetry (DSC) showed differences in rock types in terms of the decomposition of mineral and organic components, as well as the removal of gaseous components. As a result of thermal studies, it was found that not only loose, bitumen-saturated sands, but also denser, cemented rock types can serve as a reservoir for hydrocarbons. This is due to the conservation of hydrocarbon fractions in the intergranular space during the formation of carbonate cement.
Numerical study of polymerization processes on various catalytic systems
Authors: Grigoryev Igor , Mustafina Svetlana , Medvedeva Olga , Mustafina Sofya , Larin Oleg
Published: July 2019

A set of algorithms for determining the averaged molecular characteristics of the polymer and finding the optimal initial concentrations was built on the basis of the mathematical software for solving rigid and non-rigid systems of ordinary differential equations describing various polymerization processes. With the help of the developed mathematical and software computational experiments were carried out for various technological parameters and production recipes for the considered processes. The dependencies of the molecular mass characteristics of the copolymer on the time of polymerization or conversion of monomers were built, which showed agreement with the data obtained as a result of experiments in the central factory laboratory of Synthez-Kauchuk OJSC (Sterlitamak, Republic of Bashkortostan) and the laboratory of physico-chemical studies of polymers of BashSU.
Forecast estimation of sandstone collectors transformation of Lower-Karmalinsky bituminous deposit during its development by the SAGD method
Authors: Korolev E , Bakhtin A , Eskin A , Barieva E , Korolev A
Published: July 2019

In order to increase hydrocarbon reserves in recent years, begun to actively involve natural bitumens in the development. On the territory of Tatarstan, one of the experimental sites for testing various technologies for the extraction of bitumen is the Lower-Karmalinsky bitumen deposit. Currently, on the field is testing the SAFD method. According to this technology for the extraction of hydrocarbons, steam is pumped in large volumes at a temperature of about + 180°C. Superheated steam reduces the viscosity of hydrocarbons, making them mobile. However, focusing on the reduction of bitumen viscosity, the problem of mineral phase’s transformation due to anthropogenic impact in reservoir is not taken into account. In this work, using thermodynamic modeling, it was shown that the injection of superheated steam into the formation of bitumen-saturated sandstone will lead to the dissolution of calcite cement. Moreover, depending on the salinity of the injected water in the form of steam, the dissolution of carbonates will occur at different temperatures. To improve the technological characteristics and to increase the recoverability of bitumen from reservoir, it is recommended to pump hot water with as little mineralization as possible into sandstone layers. Temperature intervals were established, which should be followed in the process of technological development of bitumen collectors at the stage of heating the reservoir and at the stage of extracting water-bitumen solutions.
Problems of shale oil hydrocarbons, ultra-viscous oil reservoirs and natural bitumen deposits development in Tatarstan
Authors: Uspensky B V , Morozov V P , Valeeva S E
Published: July 2019

The area of the Volga-Ural oil and gas basin belongs to the “old” oil and gas bearing regions. The most part of easily recoverable reserves of large and unique oil fields already have been developed within the area. Therefore, super-viscous oil reservoirs, natural bitumen deposits and shale hydrocarbons seized the attention of local petroleum geologists. Tatarstan is a classic example in that sense. The Republic of Tatarstan is a leader in the development of heavy oil resources, a leader in the degree of knowledge of natural bitumen accumulations, as well as a leader in technological readiness for their development. In the depths of Tatarstan, there are more than 450 fields of ultra-viscous oil and natural bitumen with reserves ranging from 2 to 7 billion tons of this type of hydrocarbons. However, their industrial development due to low profitability is slow. To solve the problem, it is necessary to search for and commercialize economically viable technologies for the production, transportation and processing of hydrocarbons, which take into account its features and do not require increased energy and other material costs. Therefore, the search for the right unconventional hydrocarbons production concept is an urgent problem of our time.