General Investigation Methods

2020 ◽  
pp. 179-200
Author(s):  
John Bandler ◽  
Antonia Merzon
Keyword(s):  
Investigation Methods ◽  
General Investigation

State special primary acceleration measurement standard for gravimetry GET 190-2019

2020 ◽  
pp. 3-8
Author(s):  
L.F. Vitushkin ◽  
F.F. Karpeshin ◽  
E.P. Krivtsov ◽  
P.P. Krolitsky ◽  
V.V. Nalivaev ◽  
...  
Keyword(s):  
High Precision ◽  
Free Fall ◽  
Measurement Range ◽  
Measurement Standard ◽  
Acceleration Measurement ◽  
Measurement Systems ◽  
Free Fall Acceleration ◽  
Investigation Methods ◽  
Measurement Results ◽  
Upper Level

The State special primary acceleration measurement standard for gravimetry (GET 190-2019), its composition, principle of operation and basic metrological characteristics are presented. This standard is on the upper level of reference for free-fall acceleration measurements. Its accuracy and reliability were improved as a result of optimisation of the adjustment procedures for measurement systems and its integration within the upgraded systems, units and modern hardware components. A special attention was given to adjusting the corrections applied to measurement results with respect to procedural, physical and technical limitations. The used investigation methods made it possibled to confirm the measurement range of GET 190-2019 and to determine the contributions of main sources of errors and the total value of these errors. The measurement characteristics and GET 90-2019 were confirmed by the results obtained from measurements of the absolute value of the free fall acceleration at the gravimetrical site “Lomonosov-1” and by their collation with the data of different dates obtained from measurements by high-precision foreign and domestic gravimeters. Topicality of such measurements ensues from the requirements to handle the applied problems that need data on parameters of the Earth gravitational field, to be adequately faced. Geophysics and navigation are the main fields of application for high-precision measurements in this field.

THE INFLUENCE OF INQUIRY AND DISCOVERY LEARNING METHOD AND CREATIVITY LEVEL IN WRITING SKILLS DESCRIPTION IN NAUTIC TARUNA AND TECHNIQUE IN SURABAYA SHIPPING POLYTECHNIC

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Ni Putu Dian Permata Prasetyaningrum
Keyword(s):  
Quantitative Methods ◽  
Writing Skills ◽  
Discovery Learning ◽  
Learning Method ◽  
Test Results ◽  
Learning Methods ◽  
Is Research ◽  
Investigation Methods ◽  
High Level ◽  
Discovery Method

Surabaya Shipping Polytechnic emphasizes on certain areas of expertise that Taruna must possess. This is the basis after graduating from shipping polytechnics, cadets must have expertise and skills. The purpose of this study was to study the effect of inquiry, discovery learning, and creativity levels on the ability to write descriptive essays on nautical and technical cadets at Surabaya Shipping Polytechnic. This type of research is research. This research uses quantitative methods using experiments. The location used in this research is Surabaya Shipping Polytechnic. The subjects in this study were the cadets of the Nautika A, Nautika B, Teknika A, and Teknika B. classes. Based on the results of the research and discussion, the following conclusions are obtained: There are those that can be solved looking for description essays in the cadets. learning discovery method. The test results show better investigation methods than the discovery of learning, There is a difference in the ability to write a description essay about cadets who have a high level of creativity with cadets who have a low level of creativity, the test results show better who have a high level of creativity, there are related with learning methods and descriptions of the ability to write essay descriptions, the test results show learning methods and creativity descriptions of the ability to write essay descriptions.

MAGNETIC FIELD IMPACT UPON TRIBOTECHNICAL CHARACTERISTICS OF PERMANENT CONNECTIONS IN RELATION TO FRICTION SHOCK ABSORBERS

2020 ◽  
Vol 2020 (10) ◽  
pp. 4-11
Author(s):  
Victor Tikhomirov ◽  
Aleksandr Gorlenko ◽  
Stanislav Volohov ◽  
Mikhail Izmerov
Keyword(s):  
Magnetic Field ◽  
Friction Factor ◽  
Physical Contact ◽  
Active Centers ◽  
Press Fit ◽  
Electro Magnetic Field ◽  
Investigation Methods ◽  
Electro Magnetic ◽  
The Impact ◽  
The Magnetic Field

The work purpose is the investigation of magnetic field impact upon properties of friction steel surfaces at fit stripping with tightness through manifested effects and their wear visually observed. On the spots of a real contact the magnetic field increases active centers, their amount and saturation with the time of dislocation outlet, and has an influence upon tribo-mating. The external electro-magnetic field promotes the increase of the number of active centers at the expense of dislocations outlet on the contact surface, and the increase of a physical contact area results in friction tie strengthening and growth of a friction factor. By the example of friction pairs of a spentonly unit in the suspension of coach cars there is given a substantiation of actuality and possibility for the creation of technical devices with the controlled factor of friction and the stability of effects achieved is also confirmed experimentally. Investigation methods: the fulfillment of laboratory physical experiments on the laboratory plant developed and patented on bush-rod samples inserted with the fit and tightness. The results of investigations and novelty: the impact of the magnetic field upon the value of a stripping force of a press fit with the guaranteed tightness is defined. Conclusion: there is a possibility to control a friction factor through the magnetic field impact upon a friction contact.

Flat-cutting loosening in the system of fallow cultivation of chernozem soil and weediness of crops

2017 ◽  
Vol 1 (92) ◽  
pp. 78-84
Author(s):  
G. Koval ◽  
M. Kaliyevskiy ◽  
V. Yeshchenko ◽  
I. Martyniuk ◽  
N. Martyniuk
Keyword(s):  
Species Composition ◽  
Crop Rotation ◽  
Field Experiments ◽  
Early Spring ◽  
Weed Species ◽  
Wild Mustard ◽  
Spring Crop ◽  
White Campion ◽  
Investigation Methods ◽  
Top Soil

The article presents the results of field experiments, where on the basis of podsolized heavy loamy chernozem the influence of replacement of mouldboard ploughing with nonmouldboard cultivation over top soil weediness, weediness at the beginning and end of spring crop vegetation and weed species composition before harve sting were studied. Investigation methods of main fall ploughing under spring crops of five-course rotation: soybeans–rape–wheat–flax–barley at the depths of 15-17, 20-22, 25-27 cm were conducted after post-harvest field tillage. Analysis of data on contamination of the top soil with weed seeds have shown that with the replacement of fall main mouldboard ploughing gwith nonmouldboard cultivation the figure before sowing of all crops withdifferent tillage depthat crop rotation average increased by 131-132%. It caused the increase of actual weed infestation of all crops and at the beginning and end of spring crop vegetationafter different depths of fall nonmouldboard cultivation compared with ploughing at crop rotation average it was 120–132 and 123-138%respectively. Species composition of weeds afterthe replacement of main fall mouldboard ploughing with nonmouldboard cultivation remained mainlyunchanged; although in rape plantings the proportion of white campion and early spring weed sincreased, in wheat plantings– wild mustard andscentless mayweed, insoybean plantings– late spring weeds, in flax plantings– white campion, and in barley plantings– scarlet pimpernel.

THE LANDSCAPE INVESTIGATIONS AS NECESSARY PART OF BIOLOGICAL STUDY IN THE COASTAL ZONE TO THE QUESTION OF THE IMPACT OF CLIMATE CHANGE ON THE ECOLOGICAL STATE OF ARTIFICAL

2017 ◽  
Author(s):  
Artem Lapenkov ◽  
Artem Lapenkov ◽  
Yury Zuyev ◽  
Yury Zuyev ◽  
Nadezhda Zuyeva ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Benthic Communities ◽  
Great Depth ◽  
Research Strategy ◽  
Biological Study ◽  
Lake Ladoga ◽  
Coastal Zones ◽  
Investigation Methods ◽  
Ground Conditions ◽  
The Impact

Coastal zones have great diversity of resources. The shallow water zones contain the most of plant and benthic communities. A description of relief and type of ground is needed for the rigorous monitoring of biota and environmental condition of coastal zone. Generally, on the basis of these data the investigation methods of the coastal zone are selected. The shallows research strategy has been developed by us for northern part of the Lake Ladoga. If the coastal areas are characterized by great depth and flat topography, then sonar’s can be used to describe them and samples of ground can be taken by bottom grabs. In the Lake Ladoga these methods don’t operate correctly by reason of the compound bottom relief and the fact that a sizeable part of the bottom is occupied by hard ground. Therefore, our investigations base on the diving transect method of Golikov and Skarlato (1965). A diver moves along transects. He registers the depth, length to coastline, water temperature, relief and ground, edificators and records video. In the laboratory all these data are decoded and used for mapping of bays. Studies of plant communities have been performed and strategy for research of benthic communities in complex relief and hard ground conditions has been developed based on the descriptions of shallow waters. Description of the Malay Nikonovskia Bay bottom has given an opportunity to estimate changes in the bottom of the bay under the influence of the trout farm.

Students’ and Applicants’ Social Perceptions of the Risks of Educational Environment at Higher Education Institution

2019 ◽  
Vol 28 (11) ◽  
pp. 56-67 ◽  
Author(s):  
A. V. Lyalyuk ◽  
O. R. Tuchina
Keyword(s):  
Higher Education ◽  
Education Institution ◽  
Well Being ◽  
Social Institution ◽  
Educational Environment ◽  
Expert Assessment ◽  
Risk Category ◽  
Subjective Well Being ◽  
Higher Education Institution ◽  
Investigation Methods

Educational system is the most important social institution, which provides the development of a personality and frames his/her worldview and the conception of subjective well-being. Despite the large number of studies on the issue of psychological and pedagogical security of educational environment, the sphere of higher education still remains underexplored. The available empiric material has not received sufficient methodological justification and conceptualization. This article aims to provide the conceptualization of the risk category as applied to the educational environment of a higher education institution, as well as empiric investigation of the risks within the educational environment as viewed by applicants and students.Materials and methods. 213 applicants and 547 students of the Kuban State Technological University took part in the survey. The following investigation methods were used: expert assessment, interview, questioning, content analysis, analysis of means method, cluster analysis and factor analysis.Investigation results. Comparative examination of the manifestation degree of risks within the educational environment as viewed by applicants and students of higher education institution showed significant differences in the assessment of risk by these groups of respondents. From the point of view of applicants, the main risks are connected with social and psychological aspects of the educational environment of a higher education institution, relations within student groups and interaction with teachers, as well as with the issues related to the educational management and leisure arrangement. As viewed by the students, the risks within the educational environment include external and social and psychological risk factors, motivating risks and risks arising from the learning process organization and management and the related issues. Applicants’ notion of the risks within the educational environment of a higher education institution was mainly influenced by information they received from media and by the opinion of their relatives and age mates.Consideration and conclusions. It was proved that the applicants’ idea of the risks within the educational environment of a higher education institution is determined by the opinion of people they know personally, however it changes during the process of studying in higher education institution and acquiring their own experience of being within the environment. The investigation results allow creating a model of psychological and pedagogical security within the educational environment of a higher education institution. This model makes it possible to forecast main risks of the educational environment, their development, and evolvement and find solution to them. 

The Relationship of Metabolic and Endocrine Parameters with Associated Diseases in Diabetes Mellitus

2018 ◽  
Vol 69 (5) ◽  
pp. 1288-1291 ◽  
Author(s):  
Mariana Cornelia Tilinca ◽  
Sandor Pal ◽  
Zoltan Preg ◽  
Eniko Barabas Hajdu ◽  
Raluca Tilinca ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Scoring System ◽  
Laboratory Tests ◽  
Treatment Plan ◽  
Individual Treatment ◽  
Diabetic Patients ◽  
Thyroid Disorders ◽  
Associated Diseases ◽  
Investigation Methods ◽  
Predictive Role

The most common comorbidities in patients with diabetes mellitus are cardiovascular diseases, obesity, dyslipidemia, thyroid disorders but other associated diseases may frequently occur. Laboratory tests are useful investigation methods that may reveal the subclinical manifestations of the disease but they are also essential for patient monitoring. The aim of the study was to assess laboratory parameters and associated diseases in diabetic subjects and to implement a scoring system with a predictive role in the evolution of the cases. Material and methods: The study group consisted of 195 subjects with documented type 1 or type 2 diabetes. About half of the cases were collected from the Procardia outpatient unit, and the rest were patients admitted to the Diabetology Clinic in T�rgu Mure�. The study was performed between January - June 2017. The results of the laboratory tests, as well as the information regarding comorbidities and treatment, was collected and patients� body mass index was calculated. Based on the clinical data, a scoring system, called Diabetes Complication Severity Index (DCSI) with a predictive role, was implemented. The diabetic outpatients presented significantly better carbohydrate metabolic balance compared to the hospitalized subjects. No significant differences could be observed regarding kidney function, hepatic status and lipid profile of the two subgroups of diabetic subjects. The most important comorbidity observed in both patient groups was arterial hypertension. The hospitalized diabetic subjects had significantly higher incidence of ischemic heart disease and significantly lower incidence of thyroid disorders compared to the outpatients. The DCSI scoring system revealed that comorbidities are more frequently present in the hospitalized patients compared to the ambulant diabetic subjects. Evaluation of clinical status and laboratory results in diabetic patients followed by implementation of a scoring system based on the data obtained regarding comorbidities could help clinicians to set up an individual treatment plan for these patients, focusing on preventing other complications.

Comparison of Two Evaluating Methods for Establishing the Marginal Fit on Four Heat - Pressed Resin Inlays

2018 ◽  
Vol 69 (4) ◽  
pp. 890-893
Author(s):  
Sorana Baciu ◽  
Cristian Berece ◽  
Adrian Florea ◽  
Andrada Voina Tonea ◽  
Ondine Lucaciu ◽  
...  
Keyword(s):  
High Performance ◽  
Clinical Results ◽  
Marginal Fit ◽  
High Performance Polymer ◽  
Investigation Methods ◽  
Evaluating Methods

In this study were compared two investigation methods, a bi- and tri-dimensional techniques by examining the marginal fit pressed in (BioHPP) Inlays. The study pruved that the BioHPP is a high performance polymer which provides very good clinical results.

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