cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.34808/5cat-e813
title: The generalization by simplification operator with Chrobak’s method of objects representing groups of buildings in Gdańsk district  - scale 1:25000

description: The process of automatic generalization is one of the elements of spatial data preparation for the purpose of creating digital cartographic studies. The presented data include a part of the process of generalization of building groups obtained from the national geodesy and cartography resource from BDOT10k (10k topographic database) [1].
The input data are building groups obtained as a result of the aggregation operator activity (GDA_BuildingAggregation). The Chrobak's operator was designed to simplify lines [2]. For the purpose of simplifying buildings, this method has been adapted and extended by verifying the minimum size of the object using the cartographic matrix [3]. The resulting objects require another stage - orthogonalization. As a result of the simplification process, 1.5% of building groups have been removed.
Literature
[1] Regulation of the Ministry of Administration and Digitization, W sprawie bazy danych obiektów topograficznych oraz bazy danych obiektów ogólnogeograficznych, a także standardowych opracowań kartograficznych [Regarding the database of topographic objects and the database of general geographic objects, as well as standard cartographic studies.]
[2] Chrobak, T. "Metoda uogólnienia danych w procesie generalizacji obiektów liniowych." Archiwum Fotogrametrii, Kartografii i Teledetekcji 13 (2003).
[3] Chrobak, Tadeusz. "Przydatność osnowy kartograficznej i metody obiektywnego upraszczania obiektów do aktualizacji danych w BDT." Geomatics and Environmental Engineering 3 (2009): 81-90.
DOI: 10.34808/fwxs-r813
title: Determination of sex hormone concentration in wastewater samples.

description: Concentration levels of five selected steroid hormones in influent and effluent waters from wastewater treatment plant were determined using SPE(C18)-HPLC-ESI/MS/MS method.  Sex hormones like: estradiol, estriol, estrone, 17-α-ethynyloestradiol, progesterone were present in all influent wastwater samples.
DOI: 10.34808/09hs-4s31
title: Mechanical properties of VL E27 steel for shipbuilding – fracture documentation (test in -20°C)

description: One of the basic divisions of steels used for ship hulls and ocean engineering structures is the division into: normal strength steels, high strength steels and extra high strength steels. The belonging to the group is determined by the mechanical properties of the steel, such as: yield point, ultimate strength and plastic elongation after fracture. The steels in each group are divided into categories, differing in the minimum required breaking energy at a specific temperature, determined in the Charpy test. For applications on a more responsible hull structure or offshore structure, additional steel tests may be required - determination of fracture toughness. In the shipbuilding industry, it is most often CTOD (Crack Tip Opening Displacement) test.
The published data concern testing the fracture toughness of VL E27 steel for shipbuilding, with  nominal thickness of 35 mm. It is the first steel from the group of high strength steels. It is characterized by an early low carbon content, as for hull steels, which is one of the reasons for its high ductility. The average carbon content in the tested material was 0.16%. The scope of the tests carried out so far is: tensile test at + 20 ° C, 0 ° C, -20 ° C, impact test at temperatures: 20 ° C, 0 ° C, -20 ° C, -40 ° C, - 60 ° C and a fracture toughness test at temperatures of 20 ° C, 0 ° C, -20 ° C.
The dataset contains the photographic documentation of fracture, measurement of fatigue precrack length and measurement of final crack extension.
DOI: 10.34808/3fzh-yw70
title: Impedance spectra of ZnO varistor type 280 model 0 ver. 89

description: The impedance spectrum of high-voltage ZnO varistor obtained using FRA EIS impedance spectrosocpy measurement method. The 1V sinusoidal excitation was used. The frequency range was chosen from 10 kHz down to 100 uHz. The object under test and the measuring instrument were placed in a Faraday cage due to high impedance of the object. The data was acquired using Atlas-Sollich 0441 High-impedance Analyser. The varistor details were described in the referenced paper. The graph presents measurement points (blue asterisks) and results of model fitting (red squares)
Rg=(650±240)Mohms; R=(72,0±0.9)Gohms; C=(5,71±0,12)nF;
DOI: 10.34808/hcwb-e504
title: The morphology of lead-borate glasses and nanocomposites doped with iron oxide

description: The topography of iron-doped borate glasses and glass-ceramics were studied. Samples of composition of xFe2O3–(100 − x)(B2O3–2PbO) (2.5 &lt; x &lt; 37 in mol%) were prepared by the conventional meltquenching technique. The melting was conducted in alumina crucibles at the temperature of 1523 K. The melts were poured on a preheated (573 K) brass plate and pressed by an another plate to obtain flatcircular samples of 1–2 mm thickness and 20–30 mm in diameter. The quenched pellets were annealed at the temperature of 673 K for 3 h and cooled with the furnace. The microstructure of all samples was determined by means of atomic forcemicroscopy at their fresh fractureswith the use of NT-MDT Ntegra AFM. Detailed information can be found in: http://dx.doi.org/10.1016/j.ssi.2014.01.042
DOI: 10.34808/pyp3-x712
title: Simulation of perovskite-based CuI/CH3NH3PbI3/SnO2 solar cell performance

description: The presented data set is part of the theoretical research on novel thin-layer lead-halide perovskite solar cells with different inorganic transparent conductive oxides used as charge transport layers. In this study CuI/CH3NH3PbI3/SnO2 model structure (Model 2) was investigated by the use of the SCAPS-1D simulation method (https://scaps.elis.ugent.be/). 
The illumination source was assumed to be a standard solar spectrum AM 1.5G (1000 W/m2). The calculations were performed using default SCAPS generation and absorption models, and a defect-originated Shockley-Read-Hall recombination (SRH) model. The radiative band-to-band and Auger recombination mechanisms were neglected. 
The DC J-V characteristics, power conversion efficiency (PCE), fill factor (FF), open-circuit voltage (Voc), short-circuit current (Jsc) and output cell power were analyzed for selected series and shunt resistances. The temperature effect on the overall device performance was also examined.
DOI: 10.34808/atgy-vm26
title: SEM micrographs of NH4VO3 crystals

description: The DataSet contains the scanning electron microscopy (SEM) micrographs of NH4VO3 crystals obtained by the LPE-IonEx method. The SEM images clearly show that the morphology of the end product can be nicely tuned by changing the type of ammonium salt and the solvent. It can be concluded that the used solvent affected crystal shapes and their size was more salt-type dependent.
The surface morphologies of the samples were studied by an FEI Company Quanta FEG 250 scanning electron microscope (SEM) (Waltham, MA, USA), mounting the analyzed sample on a carbon conductive tape.  
These results are part of the project reported in Materials journal (10.3390/ma12203446), in this paper synthesis details are defined.
DOI: 10.34808/4c45-aw14
title: Number of students according to the form of education in the academic year 2010/2011

description: In the 2010/2011 academic year, the number of full-time students was 949.5 thousand, ie 51.6% of all students. The percentage of women among all students in the academic year 2010/2011 was 58.8%, in 1995/1996 it was 56.0%, while in 2000/2001 and 2005/2006 it was 56.8% and 56.5%, respectively. Among people studying in full-time studies there were 57.2% of women, in part-time studies women constituted 60.5% of all students.
DOI: 10.34808/b02k-qm67
title: Measurements of AuAg nanostructures

description: Extensive UV-vis measurements of AuAg alloyed nanostructures created from thin films. Plasmonic band position dependence on fabrication parameters.
DOI: 10.34808/2dkw-r561
title: Determination of changes in viscosity of pectin gel depending on shear rate (1.7 to 85 s-1).

description: The rheological characteristic of pectin gel (with concetration 0,25% m/m,  in two independent repetitions) wasmade on the basis of a viscosity measurement using a Brookfield viscometer, using LV SC4 - 27 spindle and shear rates from 1.7 to 85 s-1, in temperature of 25 C degee .The data allowed to characterize the used hydrogel preparations and assess their functional parameters as substances modifying the rheology of thickeners.
DOI: 10.34808/7s36-gy67
title: Simulation of perovskite-based CuI/CH3NH3PbI3/ZnO solar cell performance

description: The presented data set is part of the theoretical research on novel thin-layer lead-halide perovskite solar cells with different inorganic transparent conductive oxides used as charge transport layers. In this study CuI/CH3NH3PbI3/ZnO model structure (Model 3) was investigated by the use of the SCAPS-1D simulation method (https://scaps.elis.ugent.be/). 
The illumination source was assumed to be a standard solar spectrum AM 1.5G (1000 W/m2). The calculations were performed using default SCAPS generation and absorption models, and a defect-originated Shockley-Read-Hall recombination (SRH) model. The radiative band-to-band and Auger recombination mechanisms were neglected.
The DC J-V characteristics, power conversion efficiency (PCE), fill factor (FF), open-circuit voltage (Voc), short-circuit current (Jsc) and output cell power were analyzed for selected series and shunt resistances. The temperature effect on the overall device performance was also examined.
DOI: 10.34808/129s-9c66
title: Results of calibration of the piezoelectric scanner using the probe TGQ1

description: Teaching file. Results of calibration of the piezoelectric scanner using the probe TGQ1. Scanning in contact mode. NTEGRA Prima (NT-MDT) device. CSG probe 10.
Most microscopes with a scanning probe base their operation on the use of piezoelectric scanners, which allow the probe to be moved in relation to the tested surface. The correct operation of the above-mentioned elements is of key importance for the reliability of the obtained topographic images. In order to verify the quality of their operation, calibration samples with a specific geometry are used. By comparing the obtained images with the known surface profile, it is possible to determine and correct deviations in the operation of piezoelectric elements. In the described case, a tester in the form of a silicon wafer was used with marked square peaks 20 nm high and 1.5 µm long, spaced periodically at a distance of 3 µm. The file contains 3 images.
DOI: 10.34808/s485-mh58
title: The generalization by simplification operator with the Simplify Building tool of objects representing groups of buildings in Gdańsk district - scale 1:25000

description: The process of automatic generalization is one of the elements of spatial data preparation for the purpose of creating digital cartographic studies. The presented data include a part of the process of generalization of building groups obtained from the national geodesy and cartography resource from BDOT10k (10k topographic database) [1].
The input data are building groups obtained as a result of the aggregation operator activity (GDA_k25_BuildingAggregation). The employed Simplify Building tool is described by the manufacturer Esri Inc. in the documentation [2]. As a result of the simplification process, no building groups have been removed.
Literature
[1] Regulation of the Ministry of Administration and Digitization, W sprawie bazy danych obiektów topograficznych oraz bazy danych obiektów ogólnogeograficznych, a także standardowych opracowań kartograficznych [Regarding the database of topographic objects and the database of general geographic objects, as well as standard cartographic studies.]
[2] www.pro.arcgis.com [access: 15.11.2020]
DOI: 10.34808/8v64-nr61
title: EH36 steel for shipbuilding - fracture documentation for CTOD test (plate thicnkness 40mm), a0/W = 0.6

description: The basic method of ductility designation of structural steels is the Charpy impact test. The test consists of a single strike of the specimen using a Charpy pendulum. Its result is the value of work necessary to break a specimen at a test temperature. Despite its many advantages, such as its short implementation time and low costs, it has its disadvantages, in particular:
• strong influence of notch geometry on the test result, which means that impact strength cannot be considered as an unambiguous material property,
• milled notches are not repeatable because the cutter wears,
• regardless of the thickness of the material being tested, samples of the same size are used.
Due to these disadvantages, for very responsible ship and ocean engineering constructions, such as: continuous longitudinal coamings of the largest container ships, or supporting components of drilling platforms, tests are carried out basing on fracture mechanics. For shipbuilding industry, CTOD (Crack Tip Opening Displacement) is, the most often, desired value. The test CTOD is performed by slowly bending the specimen with record of the slit opening. Before performing the test, it is necessary to know the material properties (from a tensile test). The final stage of the test is the measurement of the initial fatigue fracture geometry.
The dataset contains the photographic documentation of fracture and measurement of fatigue precrack for a0/W = 0.60 specimen.
DOI: 10.34808/gmzh-aw38
title: Data from the survey on Gdańsk University of Technology foreign graduates' professional careers

description: The dataset includes data from the survey on the Gdańsk University of Technology foreign graduates on their professional careers. The research was conducted over a four-month period, from December 2019 to March 2020, using the Computer-Assisted Web Interview (CAWI). The research sample included 142 respondents. The study concerned such variables such as i.a. nationality, gender, and the faculty graduated. Summarizing, the most of foreign garduates are currently working and their job is consistent with the field of study at the Gdańsk University of Technology.
DOI: 10.34808/wgvj-bg35
title: Processed measurements of AuAg nanostructures

description: Extensive processed UV-vis measurements of AuAg alloyed nanostructures created from thin films. Plasmonic band position dependence on fabrication parameters.
DOI: 10.34808/jx2w-8987
title: The electrical properties mesurements of SOFC with Ce0.8Sm0.2O2-s layer

description: The dataset includes The electrical properties mesurements of SOFC with Ce0.8Sm0.2O2-s layer. Samples were produced using aqueous soft chemistry methods (microemulsion method) and applied in form of a layer onto the anode of the commercial SOFC. The SOFC was working under biogas feeding.
"Two types of electrical measurements were collected during fuel cell operation in biogas: a current density versus voltage and a current density versus time at 0.65 V for the 90 h at 750 °C. " (Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie)10.1016/j.ijhydene.2020.07.146)
DOI: 10.34808/a1b0-tm21
title: Testing HIADAC high impedance analyzer in Trento University laboratory on protective foil using 2-wire probe 48h exposition

description: The dataset presents impedance spectrum of anticorrosion foil (coating) protecting aluminium frame . This object was used to test high-impedance analyzer for diagnostic of anticorossion coatings (HIADAC) realized in the frame of Eureka project E!3174.  The impedance spectrum frequency range (0.1 Hz – 100 kHz) was selected in order to test the whole measureement range of the analyzer. In this dataset, the DC polarisation was automatically set to compensate open-circuit potential and AC amplitude was set to 20 mV.  The model together with the 2-wire measurement probe (dedicated for grounded objects) was placed in Faraday cage. The measurement setup is presented in the photo below. The spectrum was acquired after 48 hours of exposition on 3% NaCl solution.  Top-left figure presents impedance modulus and top-right figure presents impedance angle for the measurements done using the setup presented in bottom-left figure (in the central part HIADAC could be seen).
DOI: 10.34808/j0v1-ft81
title: Neural oscillations induced by IAPS pictures (session 8)

description: The data were collected to perform research on the possibility of controlling the content displayed on the monitor screen using human emotional states extracted from EEG signals. The dataset contains recordings of 14-channel EEG signals gathered from seven persons aged 23 - 35 within 26 sessions, during which 45 different random photos, taken from the International Affective Picture System – IAPS collection, were presented. All sessions were collected using the Emotiv Epoc+ device at the 256 Hz sampling rate, equipped with 14 electrodes arranged according to the 10-20 standard system.
The dataset contains three files:(1) session08_EEGLogger.csv,(2) session08_emotion_picture_timestamp.csv,(3) session08_power_brainwaves.csv.
The time-dependent (timestamp is in seconds) raw EEG signals (given in micro Volts) for all electrodes (AF3, F7, F3, FC5, T7, P7, O1, O2, P8, T8, FC6, F4, F8, AF4) are in the file (1). The timestamps (given in seconds) of displaying pictures, self-assessments of the emotional states (levels: sad, neutral, smiling) and the IAPS pictures ID are in the file (2). The display time of each picture is constant and equals 5 seconds. The low-resolution power of brainwaves (theta, alpha, low beta, high beta, and gamma) recorded for all electrodes during the session are in the file (3).
DOI: 10.34808/40cz-fy38
title: Mechanical properties of VL E27 steel for shipbuilding –SEM fracture investigation (Charpy test in -60°C)

description: One of the basic divisions of steels used for ship hulls and ocean engineering structures is the division into: normal strength steels, high strength steels and extra high strength steels. The belonging to the group is determined by the mechanical properties of the steel, such as: yield point, ultimate strength and plastic elongation after fracture. The steels in each group are divided into categories, differing in the minimum required breaking energy at a specific temperature, determined in the Charpy test. For applications on a more responsible hull structure or offshore structure, additional steel tests may be required - determination of fracture toughness. In the shipbuilding industry, it is most often CTOD (Crack Tip Opening Displacement) test.
The published data concern testing the fracture toughness of VL E27 steel for shipbuilding, with  nominal thickness of 35 mm. It is the first steel from the group of high strength steels. It is characterized by an early low carbon content, as for hull steels, which is one of the reasons for its high ductility. The average carbon content in the tested material was 0.16%. The scope of the tests carried out so far is: tensile test at + 20 ° C, 0 ° C, -20 ° C, impact test at temperatures: 20 ° C, 0 ° C, -20 ° C, -40 ° C, - 60 ° C and a fracture toughness test at temperatures of 20 ° C, 0 ° C, -20 ° C.
The dataset contains the photographic documentation of SEM (scanning electron microscope) fracture investigation
DOI: 10.34808/kqqv-yq22
title: Impedance spectra of ZnO varistor type 440 model O ver. 68

description: The impedance spectrum of high-voltage ZnO varistor obtained using FRA EIS impedance spectrosocpy measurement method. The 1V sinusoidal excitation was used. The frequency range was chosen from 10 kHz down to 10 uHz. The object under test and the measuring instrument were placed in a Faraday cage due to high impedance of the object. The data was acquired using Atlas-Sollich 0441 High-impedance Analyser. The varistor details were described in the referenced paper. The graph presents measurement points (blue asterisks) and results of model fitting (red squares)
Rg=(750±390)Mohm; R=(80±0,9)Gohm; C=(5,7±0,2)nF;
DOI: 10.34808/j9wj-h694
title: Students and graduates of higher education institutions in 1990-2011 (with foreigners) in Poland

description: In the last thirty years, there has been a spontaneous development of science and economy, with particular emphasis on the non-public education sector. It seems that the situation in the higher education market has now stabilized,with a slight downward trend in absolute terms.
The market for educational services in the field of higher education is divided into two sectors: public universities and non-public universities. There are also denominational universities in Poland that grant the professional degrees of master's or bachelor's in theology.
In the academic year 2010/2011, 1,841.3 thousand students were educated at all types of higher education institutions, by 3.1% less than in the previous year, while in comparison with the academic year 2000/2001, the number of students was higher by 16.2%. In 2010, the number of newly admitted students to the first year of studies, both full-time and part-time, decreased. In total (excluding foreigners) 441.3 thous. students compared to 472.6 thous. in 2009, ie less by 31.3 thous. people (6.6%).
DOI: 10.34808/m8g8-5p66
title: Electrical characteristics simulation of top-gated graphene field-effect transistor (GFET) with 10 μm x 3 μm graphene channel

description: The presented data set is part of the research on graphene field-effect transistor (GFET) modelling. The calculations were performed with the use of GFET Tool program (https://nanohub.org/resources/gfettool DOI: 10.4231/D3QF8JK5T), which enabled simulation of the drain current (Id) vs. drain voltage (Vd) characteristics for different gate voltages (Vg) of the top-gated GFET device. 
In this study the GFET device with 10 μm x 3 μm graphene channel, 10 nm top-gate dielectric and 300 nm SiO2 layer was analyzed. The drift-diffusion approach was employed to calculate self-consistently the I-V behavior of the transistor at initial temperature of 293K. The mobility of the both type of carriers (electrons and holes) was 3000 cm2/(V*s) and the Dirac voltage was 0 V.
DOI: 10.34808/vb2c-j766
title: UV-Vis measurements and SEM images of Ag nanostructures

description: Uv-vis and SEM of Ag nanostructures. Structures were obtained by dewetting thin films. Various fabrication conditions i.e. temperature, time of the annealing and thickness of the initial layer were subsequently changed.
DOI: 10.34808/g5n0-x006
title: EH36 steel for shipbuilding (plate thicnkness 30 mm) - CMOD - force record, a0/W = 0.6

description: The basic method of ductility designation of structural steels is the Charpy impact test. The test consists of a single strike of the specimen using a Charpy pendulum. Its result is the value of work necessary to break a specimen at a test temperature. Despite its many advantages, such as its short implementation time and low costs, it has its disadvantages, in particular:
• strong influence of notch geometry on the test result, which means that impact strength cannot be considered as an unambiguous material property,
• milled notches are not repeatable because the cutter wears,
• regardless of the thickness of the material being tested, samples of the same size are used.
Due to these disadvantages, for very responsible ship and ocean engineering constructions, such as: continuous longitudinal coamings of the largest container ships, or supporting components of drilling platforms, tests are carried out basing on fracture mechanics. For shipbuilding industry, CTOD (Crack Tip Opening Displacement) is, the most often, desired value. The test CTOD is performed by slowly bending the specimen with record of the slit opening. Before performing the test, it is necessary to know the material properties (from a tensile test). The final stage of the test is the measurement of the initial fatigue fracture geometry.
The dataset contains the CMOD (Crack Mouth Opening Displacement) - Force for a Bx2B (B = 30 mm) bend specimen, a0 / W = 0.60 from EH36 steel from shipbuilding. The test was carried out at room temperature.