On the application of the system of machines modular block type in the advanced technology logging activities

2016 ◽  
Author(s):  
С.А. Демидов
Keyword(s):  
Advanced Technology ◽  
Modular System ◽  
Process Equipment ◽  
Block Type ◽  
Work Efficiency ◽  
Operating Characteristics ◽  
Promising Direction ◽  
Hydrostatic Transmission ◽  
Machine Module

Рассматриваются возможности применения системы машин модульно-блочного типа в перспективных технологиях лесосечных работ, а также проблемы машинного парка лесозаготовительных предприятий России. Цель исследования - изучение структуры и особенностей эксплуатации системы лесных машин модульно блочного типа в современных условиях лесозаготовок с перспективой применения на ближайшее будущее. Для улучшения технологии проведения лесосечных работ и повышения экономической эффективности лесопромышленного комплекса предлагается провести ряд важных технических и технологических изменений. Одним из решений проблемы по улучшению эффективности работы является разработка и внедрение комплекса лесных машин, основанного на принципе эксплуатационной модульности. Это будет гарантировать технологическую гибкость производства, предоставит высокую производительность и обеспечит совместимость с окружающей средой. Приведен принцип устройства машин модульно-блочного типа с разделением функций между транспортными и технологическими модулями. Представлены графически классификация модулей по их назначению и концепция компоновки системы машин модульно-блочного типа, а также главный модуль (энергетический) и несколько технологических модулей, способных выполнять различные технологические операции в зависимости от условий и технологии производства. Как показал анализ рынка, наиболее перспективным направлением по улучшению механизации лесного парка машин является создание комплекса модульно-блочных машин на базе колесного трактора, оснащенных гидрообъемными передачами. Это делает конструкцию машины более гибкой и мобильной. Принцип формирования и работы модульной системы машин с многофункциональным технологическим оборудованием рассматривается в качестве перспективного направления по улучшению лесозаготовительного процесса. The article deals with the prospects for the use of machines modular block type in the advanced technology logging activities, as well as the machinery problems of logging enterprises in Russia. The research objective. The study of the structure and operating characteristics of a system of forest modular block type machines in current conditions with the prospect of their application in the nearest future. It is necessary that a number of important technical and technological changes should be made to improve the technology of logging operations and increase the economic efficiency of timber industry complex. One of the solutions to improve work efficiency is the development and introduction of forest machines based on the principle of operational modularity. It will ensure the flexibility of the production process, provide high work efficiency and, what counts, will be environmentally friendly. The article gives the description of the principle of the machine module block type, as well as the functions and how they are divided between the two modules. There are two pictures in the article. The first picture gives the classification of modules according to their application. The second picture shows the principle of arrangement of modular machine-block type. Both the main energetic module and some technological modules capable of performing processing steps depending on the conditions and production technology are presented. According to the market analysis that shows that the most promising direction to improve the mechanization of forest machinery is to create a complex modular block machines on the base of a wheeled tractor equipped with hydrostatic transmission. It will make the machine design more flexible and mobile. The principle of formation and operation of the modular system with multi-function machines process equipment is considered as a promising direction for improvement of the process of logging.

Developing on Experiment System of Process Equipment and Control Engineering Based on PC and PLC

2012 ◽  
Vol 490-495 ◽  
pp. 2286-2289
Author(s):  
Jun Han ◽  
Rui Li Chang
Keyword(s):  
Process Control ◽  
Creative Thinking ◽  
Advanced Technology ◽  
Process Equipment ◽  
Control Engineering ◽  
Experiment System ◽  
Engineering Theory ◽  
Control Automation ◽  
And Control ◽  
Equipment Control

Being established in the requirement of teaching and practice, and connecting to the development of process equipment and control engineering specialty, a suit of experiment teaching instrument is designed, which relates to process control, automation, survey and control and correlative specialties. By the instrument, students can taste the actualizing of process equipment control and the application of advanced technology when learning engineering theory. This stimulates their enthusiasm in specialty courses study and enhances their practice capability and creative thinking

scholarly journals Classification of RA Into Active or Inactive With a Modified DAS, for Future Use as a Treat-to-target Tool, With a HandScan Score Replacing Joint Counts

2021 ◽  
Author(s):  
Maxime Verhoeven ◽  
Anton Westgeest ◽  
Janneke Tekstra ◽  
Jacob van Laar ◽  
Floris Lafeber ◽  
...  
Keyword(s):  
Medical Records ◽  
Roc Curves ◽  
Predictor Variables ◽  
Treat To Target ◽  
Reference Standard ◽  
Clinical Classification ◽  
Operating Characteristics ◽  
Clinical Interpretation ◽  
Activity Measures

Abstract ObjectivesTo establish the value of a modified DAS (DAS-OST) without joint counts but with a HandScan score (OST), versus that of DAS28, to classify RA as active versus inactive, with as reference standard the rheumatologist's clinical classification.MethodsRA patients with at least one HandScan and DAS28 measurement performed at the same visit were included. Data was extracted from medical records, as was the clinical interpretation as active or inactive RA by the rheumatologist. Logistic regression analyses were performed to calculate areas under the receiver operating characteristics (AU-ROC) curves. The clinical interpretation was used as reference standard in all analyses, and disease activity measures were used as predictor variables. The performance of predictor variables (AU-ROCs) was compared.ResultsData of 1505 unique RA patients were used for analyses. The highest AU-ROC of 0.88 (95%CI 0.85 – 0.90) was shown for DAS28; AU-ROC of DAS-OST was 0.78 (95%CI 0.75 – 0.81), difference 0.10, p<0.01.ConclusionsCompared to DAS28, DAS-OST classified RA statistically significantly less well as active versus inactive, when using the clinical classification as reference standard. However, a DAS-modification without joint scores might have a place in strategies limiting routine outpatients’ visits to the rheumatologist.

scholarly journals Typological features and prospective lines of development of roadside service facilities in Belarus

Vestnik MGSU ◽  
2019 ◽  
pp. 940-953
Author(s):  
Anzhelika V. Evstratenko
Keyword(s):  
Modular System ◽  
Network Development ◽  
Regulatory Requirements ◽  
Service Network ◽  
Field Surveys ◽  
National Importance ◽  
Functional Zoning ◽  
Theoretical Synthesis ◽  
Current Situation Analysis

Introduction: the methods of roadside service network development implemented in Belarus were identified. Structure, architectural and spatial solutions, and general functional zoning of a service facility territory were considered for the roadside service facilities located along Belarus main motor roads. The study aims at the revelation of typological features of roadside service network elements in Belarus and their structure-based classification as well as the development of the main provisions on the formation of these facilities based on the current situation analysis and prospective lines of building up a service system in the areas of influence of national importance roads. Materials and methods: the work was carried out through systematization, structural and comparative analyses, theoretical synthesis of the data obtained from the detailed analysis of literature and statistical sources, field surveys of roadside service facilities located along the national-importance roads in Belarus. Likewise design estimation documentation for the constructed facilities was applied. During the field surveys, photo fixation and graph-analytic analysis methods were used. Results: the article suggests the classification of roadside service facilities, reveals the methods of network development, considers functional zoning and offers a concept of prospective formation of the facilities in Belarus. Conclusions: theoretical and methodological foundations of the facility formation were developed, which allows accomplishing more reasonable and objective decisions regarding the development of the roadside service network. The developed classification allows defining new approaches to the formation of the network individual elements. The suggested concept of a modular system for the prospective formation of the roadside service in Belarus can form a basis for the initial build-up and temporary transformation of the facilities and the system as a whole and can be used to develop regulatory requirements for their planning structure and architectural and spatial solution.

scholarly journals Studying the system IL-1 and G-CSF in hydronephrosis as a perspective of creating new diagnostic test systems

2019 ◽  
Vol 5 (3) ◽  
pp. 64-68
Author(s):  
N. Vechkanova ◽  
N. Stepanov ◽  
I. Mashnin ◽  
Z. Duvayarov ◽  
V. Selkin
Keyword(s):  
Connective Tissue ◽  
Renal Tissue ◽  
Control Group ◽  
Urinary System ◽  
Promising Direction ◽  
Complex Process ◽  
High Prevalence ◽  
Opening Up ◽  
Contradictory Data

Hydronephrosis refers to diseases of the urinary system, which are characterized by high prevalence. Moreover, this pathology of all obstructive uropathies, leading to a decrease in the function of the renal parenchyma, accounts for up to 15% of cases. Therefore, the search for various markers involved in the development and progression of kidney damage is particularly relevant, since in the literature there are very contradictory data. Our article presents the results of a survey of 40 patients with established and confirmed diagnosis of stage I hydronephrosis (according to the classification of N. A. Lopatkin), and 20 completely healthy people (control group). All patients initially and at the end of the study determined the levels of cytokines: IL-1a, IL-1b, IL-1ra and G-CSF. We found that patients with hydronephrosis had higher rates of pro-inflammatory components of the IL-1β system: IL-1β — 104.42 (75% CI [111.8–151.4]) pg/ml, which was significantly higher than in the control group 3.7 times. In patients with hydronephrosis, there is an increase in the levels of IL-1β, IL-1a, and G-CSF against the background of a decrease in IL-1ra. The study of the IL-1 and G-CSF systems in dynamics during hydronephrosis is a very promising direction, opening up enormous opportunities in creating effective diagnostic markers of hydronephrosis in the very early stages of the formation of this pathology. Thus, analysis of the literature indicates that damage to the renal tissue in obstructive uropathies is an extremely complex process, and the initiation of fibrogenesis processes with partial inhibition of resorption leads to remodelling of connective tissue and progression of nephrosclerosis.

scholarly journals Early detection of Alzheimer’s disease with a total score of the German CERAD

2010 ◽  
Vol 16 (5) ◽  
pp. 910-920 ◽  
Author(s):  
MICHAEL M. EHRENSPERGER ◽  
MANFRED BERRES ◽  
KIRSTEN I. TAYLOR ◽  
ANDREAS U. MONSCH
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Logistic Regression ◽  
Correct Classification ◽  
Operating Characteristics ◽  
Healthy Control ◽  
Neuropsychological Assessment Battery ◽  
State Examination

AbstractThe goal of the present study was to evaluate the diagnostic discriminability of three different global scores for the German version of the Consortium to Establish a Registry on Alzheimer’s Disease-Neuropsychological Assessment Battery (CERAD-NAB). The CERAD-NAB was administered to 1100 healthy control participants [NC; Mini-Mental State Examination (MMSE) mean = 28.9] and 352 patients with very mild Alzheimer’s disease (AD; MMSE mean = 26.1) at baseline and subsets of participants at follow-up an average of 2.4 (NC) and 1.2 (AD) years later. We calculated the following global scores: Chandler et al.’s (2005) score (summed raw scores), logistic regression on principal components analysis scores (PCA-LR), and logistic regression on demographically corrected CERAD-NAB variables (LR). Correct classification rates (CCR) were compared with areas under the receiver operating characteristics curves (AUC). The CCR of the LR score (AUC = .976) exceeded that of the PCA-LR, while the PCA-LR (AUC = .968) and Chandler (AUC = .968) scores performed comparably. Retest data improved the CCR of the PCA-LR and Chandler (trend) scores. Thus, for the German CERAD-NAB, Chandler et al.’s total score provided an effective global measure of cognitive functioning, whereby the inclusion of retest data tended to improve correct classification of individual cases. (JINS, 2010, 16, 910–920.)

Classification of Chemical Processes: A Graphical Approach to Process Synthesis To Improve Reactive Process Work Efficiency

2010 ◽  
Vol 49 (17) ◽  
pp. 8227-8237 ◽  
Author(s):  
Baraka Celestin Sempuga ◽  
Brendon Hausberger ◽  
Bilal Patel ◽  
Diane Hildebrandt ◽  
David Glasser
Keyword(s):  
Chemical Processes ◽  
Process Synthesis ◽  
Work Efficiency ◽  
Graphical Approach ◽  
Reactive Process ◽  
Process Work

scholarly journals Interest of the androgen deficiency in aging males (ADAM) questionnaire for the identification of hypogonadism in elderly community-dwelling male volunteers

2004 ◽  
Vol 151 (3) ◽  
pp. 355-360 ◽  
Author(s):  
A Tancredi ◽  
JY Reginster ◽  
F Schleich ◽  
G Pire ◽  
P Maassen ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Free Testosterone ◽  
Community Dwelling ◽  
Androgen Deficiency ◽  
Operating Characteristics ◽  
Serum Free ◽  
Testosterone Levels ◽  
A Value ◽  
Elderly Males

OBJECTIVE: To date, serum free testosterone measurement is considered to be the gold standard for the diagnosis of hypogonadism in elderly males but it is not available to all subjects suspected of a decrease in testicular function. Therefore, we evaluated whether the Androgen Deficiency in Aging Males (ADAM) questionnaire, in its original or in a modified 'quantitative' version (qADAM), could be used as a surrogate to biochemical determinations for the identification of hypogonadism in elderly males. METHODS: 5028 men, aged 50-70 years, spontaneously consulting for the assessment of their gonadal function were studied. ADAM and qADAM, allocating a value of 1 point for any positive answer to each of the 10 questions of the ADAM test, were assessed for their ability to discriminate between males with free testosterone levels below or above 70 ng/l. RESULTS: The sensitivity and specificity of the ADAM score were 81% and 21.6% respectively. The use of ADAM resulted in an appropriate classification of our population in normal or hypogonadal subjects in 44.5% of the cases. The area under the receiver operating characteristics (ROC) curve for the qADAM (0.529) revealed a highly marginal interest of this quantitative approach compared with the original scoring system. CONCLUSIONS: The ADAM test has a high sensitivity to identify aging males with low free testosterone levels. However, due to its lack of specificity, this test cannot be used as a surrogate to serum free testosterone testing for the identification of androgen deficiency in elderly, community-dwelling males.

Experiences of the Italian State Railways with Diesel Shunting Locomotives Using Hydrostatic Transmissions

1969 ◽  
Vol 184 (1) ◽  
pp. 961-968
Author(s):  
P. Camposano ◽  
V. Brandani
Keyword(s):  
Diesel Engine ◽  
Power Ratio ◽  
Operating Characteristics ◽  
Maintenance Costs ◽  
Hydrostatic Transmission ◽  
Fast Running ◽  
Rigid Connection ◽  
Flexibility Factor ◽  
Hydrostatic Transmissions ◽  
High Flexibility

The Italian State Railways (F.S.) have in service 150 two-and three-axle diesel shunting locomotives equipped with hydrostatic transmission, powered at rates from 150 to 450 hp. In these locomotives some operating characteristics give better performance than locomotives equipped with hydrodynamic transmissions, specifically: easy running reversibility; high flexibility factor which allows elimination of the slow-fast running gears and simplicity of installation. Other theoretical advantages of hydrostatic transmission were found to be unimportant in practice, for example: initial loss of power due to the transmission increases remarkably with service and the braking action is limited by the overrunning of the diesel engine. Disadvantages of the hydrostatic transmissions in service are: the ‘rigid’ connection between the engine and the axles and the absence of ‘coasting’; the maintenance costs of the transmission increase more than linearly with power ratio. In conclusion, the experience of the F.S. with hydrostatic transmission units shows that this type of transmission can be competitive in the field of diesel power of less than 150 kW.

scholarly journals Functional imaging with 11C-metomidate PET for subtype diagnosis in primary aldosteronism

2020 ◽  
Vol 183 (6) ◽  
pp. 539-550
Author(s):  
Minna Soinio ◽  
Anna-Kaarina Luukkonen ◽  
Marko Seppänen ◽  
Jukka Kemppainen ◽  
Janne Seppänen ◽  
...  
Keyword(s):  
Functional Imaging ◽  
Primary Aldosteronism ◽  
Standardized Uptake Value ◽  
Random Order ◽  
Operating Characteristics ◽  
Endocrine Society ◽  
Subtype Classification ◽  
Characteristics Analysis ◽  
Adrenal Ct

Objective Endocrine Society guidelines recommend adrenal venous sampling (AVS) in primary aldosteronism (PA) if adrenalectomy is considered. We tested whether functional imaging of adrenal cortex with 11C-metomidate (11C-MTO) could offer a noninvasive alternative to AVS in the subtype classification of PA. Design We prospectively recruited 58 patients with confirmed PA who were eligible for adrenal surgery. Methods Subjects underwent AVS and 11C-MTO-PET without dexamethasone pretreatment in random order. The lateralization of 11C-MTO-PET and adrenal CT were compared with AVS in all subjects and in a prespecified adrenalectomy subgroup in which the diagnosis was confirmed with immunohistochemical staining for CYP11B2. Results In the whole study population, the concordance of AVS and 11C-MTO-PET was 51% and did not differ from that of AVS and adrenal CT (53%). The concordance of AVS and 11C-MTO-PET was 55% in unilateral and 44% in bilateral PA. In receiver operating characteristics analysis, the maximum standardized uptake value ratio of 1.16 in 11C-MTO-PET had an AUC of 0.507 (P = n.s.) to predict allocation to adrenalectomy or medical therapy with sensitivity of 55% and specificity of 44%. In the prespecified adrenalectomy subgroup, AVS and 11C-MTO-PET were concordant in 10 of 19 subjects with CYP11B2-positive adenoma and in 6 of 10 with CYP11B2-positivity without an adenoma. Conclusions The concordance of 11C-MTO-PET with AVS was clinically suboptimal, and did not outperform adrenal CT. In a subgroup with CYP11B2-positive adenoma, 11C-MTO-PET identified 53% of cases. 11C-MTO-PET appeared to be inferior to AVS for subtype classification of PA.

The Applications of FWD on the Asphalt Pavement Maintenance Design

2012 ◽  
Vol 512-515 ◽  
pp. 2923-2926 ◽  
Author(s):  
Yong Chun Cheng ◽  
Ri Hua Bai
Keyword(s):  
Asphalt Pavement ◽  
Advanced Technology ◽  
Work Efficiency ◽  
Pavement Maintenance ◽  
The Core ◽  
Back Calculation ◽  
Drilling Core ◽  
Structure Layer

In asphalt pavement maintenance design the deflection of pavement strength and the drilling core examination of damage on each structure layer are required. This paper based on the advanced technology of the FWD and developed a link with the Benkelman Beam testing. It indicated that assessment of the usage information on each structure layer by using the Modulus Back Calculation was well matched with the core results; therefore, it improved the work efficiency to a new level.

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