Pub Date : 2022-01-01DOI: 10.56082/annalsarsciagr.2022.1.45
T. Marușca
Grassland types of Rarău Massif with soils formed on a calcareous geological substrate (dolomite) have a very high phytodiversity, on average 91 species of plants on a floristic survey. The overall vegetation cover was almost 90% of which over 60% forage species and almost 30% harmful species. Of the 12 main grassland types, 3 are xerophilous, 2 mesoxerophilous and 7 mesophilous. The most species-rich mesophilous grasslands are Festuca rubra and Festuca nigrescens with 135-154 taxones per survey. The highest pastoral value (PV) was assessed at Habitat 6510 of almost 68 PV where the highest production of 13.6 t/ha of green mass production (GMP) was estimated when using the grassland as hayfield. At Habitat 6520, where the grassland was grazed with animals, it was estimated 51.5 PV, over 7 t/ha GMP that supports 0.84 LU/ha in 130 days grazing season. In the same Habitat 6520 there are grasslands with grassy carpet degraded by Nardus stricta and Deschampsia caespitosa, where we have 20 PV and 2 t/ha GMP with 0.30 LU/ha. The rest of the habitats have a lower productivity, respectively habitat 6170, due to the altitude and a colder climate and habitat 6210 with a drier climate. On average, the productivity of the habitats is quite good with 42 PV, 6.4 t/ha GMP and 0.6 LU/ha in 120 days of grazing.
{"title":"PRODUCTIVITY EVALUATION OF THE MAIN GRASSLAND HABITATS, NATURA 2000, FROM THE RARĂU MASSIVE (EASTERN CARPATHIANS)","authors":"T. Marușca","doi":"10.56082/annalsarsciagr.2022.1.45","DOIUrl":"https://doi.org/10.56082/annalsarsciagr.2022.1.45","url":null,"abstract":"Grassland types of Rarău Massif with soils formed on a calcareous geological substrate (dolomite) have a very high phytodiversity, on average 91 species of plants on a floristic survey. The overall vegetation cover was almost 90% of which over 60% forage species and almost 30% harmful species. Of the 12 main grassland types, 3 are xerophilous, 2 mesoxerophilous and 7 mesophilous. The most species-rich mesophilous grasslands are Festuca rubra and Festuca nigrescens with 135-154 taxones per survey. The highest pastoral value (PV) was assessed at Habitat 6510 of almost 68 PV where the highest production of 13.6 t/ha of green mass production (GMP) was estimated when using the grassland as hayfield. At Habitat 6520, where the grassland was grazed with animals, it was estimated 51.5 PV, over 7 t/ha GMP that supports 0.84 LU/ha in 130 days grazing season. In the same Habitat 6520 there are grasslands with grassy carpet degraded by Nardus stricta and Deschampsia caespitosa, where we have 20 PV and 2 t/ha GMP with 0.30 LU/ha. The rest of the habitats have a lower productivity, respectively habitat 6170, due to the altitude and a colder climate and habitat 6210 with a drier climate. On average, the productivity of the habitats is quite good with 42 PV, 6.4 t/ha GMP and 0.6 LU/ha in 120 days of grazing.","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74420652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56082/annalsarsciagr.2022.2.34
T. Marușca, V. Blaj, V. Mocanu
Between 1996 and 2020, in the Bucegi Mountains at 1,800 m altitude, 4 variants for improving subalpine grasslands degraded by Nardus stricta (40-60%) were investigated, namely A: control; B: chemical fertilization 3 years, followed by night paddocking once every 6 years; C: fertilization identical to B on soil amended in 1995 with lime dust and D: grassland sown in 1995, amended identical to C and fertilized identical to B and C. Each variant was used for 85 days by grazing with cows, and the milk production was recorded. The best variant on 25 years average was D (fertilized, amended, sown) where 5.51 t/ha SU and 4,640 liters of milk per hectare were recorded. The effect of amendment was 18-34% (variant C and D) and of the sown grassland (D) was of 14% to variant B, improved only by fertilization. Averaged over 25 years, the improvement works cost 4 Eurocents per liter of milk, representing 9.5% of the average milk price in 2022 of the European Union (42 Eurocents/Liter), our improvement works and usage with dairy cows having a high economic efficiency. Calcareous amendment lasts over 25-30 years and the sown grassland in subalpine conditions has an effect of about 20 years. Research will continue until the effect of calcium amendment is stopped, which is the most important improvement factor next to organo-mineral fertilization
{"title":"LONG-TERM EFFECT OF THE TECHNOLOGIES AND RATIONAL USE OF NARDUS STRICTA SUBALPINE PASTURES FROM THE CARPATHIAN MOUNTAINS","authors":"T. Marușca, V. Blaj, V. Mocanu","doi":"10.56082/annalsarsciagr.2022.2.34","DOIUrl":"https://doi.org/10.56082/annalsarsciagr.2022.2.34","url":null,"abstract":"Between 1996 and 2020, in the Bucegi Mountains at 1,800 m altitude, 4 variants for improving subalpine grasslands degraded by Nardus stricta (40-60%) were investigated, namely A: control; B: chemical fertilization 3 years, followed by night paddocking once every 6 years; C: fertilization identical to B on soil amended in 1995 with lime dust and D: grassland sown in 1995, amended identical to C and fertilized identical to B and C. Each variant was used for 85 days by grazing with cows, and the milk production was recorded. The best variant on 25 years average was D (fertilized, amended, sown) where 5.51 t/ha SU and 4,640 liters of milk per hectare were recorded. The effect of amendment was 18-34% (variant C and D) and of the sown grassland (D) was of 14% to variant B, improved only by fertilization. Averaged over 25 years, the improvement works cost 4 Eurocents per liter of milk, representing 9.5% of the average milk price in 2022 of the European Union (42 Eurocents/Liter), our improvement works and usage with dairy cows having a high economic efficiency. Calcareous amendment lasts over 25-30 years and the sown grassland in subalpine conditions has an effect of about 20 years. Research will continue until the effect of calcium amendment is stopped, which is the most important improvement factor next to organo-mineral fertilization","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81953008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.56082/annalsarsciinfo.2021.1-2.5
I. Tache
The vascular diseases are reflected by impairments in both morphology and hemodynamics. Digital medical imaging has revolutionized the diagnosis and treatment of these diseases. The extraction of the blood flow information from the daily clinical medical imaging acquisitions is one of the greatest importance for the physicians nowadays. The paper presents a review of the most noticeable methods of extracting blood velocity from medical images. X-ray angiography is the gold standard of the vascular diseases’ diagnosis, and it can be used successfully along with blood velocity estimation methods presented in this paper.
{"title":"REVIEW OF BLOOD VESSELS VELOCITY ESTIMATIONS","authors":"I. Tache","doi":"10.56082/annalsarsciinfo.2021.1-2.5","DOIUrl":"https://doi.org/10.56082/annalsarsciinfo.2021.1-2.5","url":null,"abstract":"The vascular diseases are reflected by impairments in both morphology and hemodynamics. Digital medical imaging has revolutionized the diagnosis and treatment of these diseases. The extraction of the blood flow information from the daily clinical medical imaging acquisitions is one of the greatest importance for the physicians nowadays. The paper presents a review of the most noticeable methods of extracting blood velocity from medical images. X-ray angiography is the gold standard of the vascular diseases’ diagnosis, and it can be used successfully along with blood velocity estimation methods presented in this paper.","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74545401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.56082/annalsarsciphyschem.2021.1.19
M. Brik, N. Avram, C. Avram
The exchange charge model of crystal field was used to calculate the crystal field splitting of all Ni2+ energy levels (3d8 electron configuration) in three structurally similar crystals of CdCl2, CdBr2, and CdI2. The influence of the nature of the ligands and interionic distances on the values of the crystal field parameters and location of the split energy levels and relative intervals between them was identified. Comparison of the calculated energy levels with the experimental results available in the literature yielded good agreement.
{"title":"COMPARATIVE CRYSTAL FIELD ANALYSIS OF THE NI2+ ENERGY LEVEL SCHEME IN CdCl2, CdBr2, CdI2 CRYSTALS","authors":"M. Brik, N. Avram, C. Avram","doi":"10.56082/annalsarsciphyschem.2021.1.19","DOIUrl":"https://doi.org/10.56082/annalsarsciphyschem.2021.1.19","url":null,"abstract":"The exchange charge model of crystal field was used to calculate the crystal field splitting of all Ni2+ energy levels (3d8 electron configuration) in three structurally similar crystals of CdCl2, CdBr2, and CdI2. The influence of the nature of the ligands and interionic distances on the values of the crystal field parameters and location of the split energy levels and relative intervals between them was identified. Comparison of the calculated energy levels with the experimental results available in the literature yielded good agreement.","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83342478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.56082/annalsarsciinfo.2021.1-2.45
F. Găiseanu
The boron-doped silicon layers commonly used to fabricate various micro-mechanical elements, particularly silicon membranes, are efficient stop-etching barriers, so their control is crucial in the bulk micromachining technology. As the properties of the boron doped layers depends on the type of the doping source and on the diffusion depth in the silicon bulk, a particular analysis should be applied in each specific case. In this paper there are reported the results of an analytical modeling of the boron diffusion profile in silicon, which are applied to simulate the boron diffusion profile at high diffusion temperatures (1050°C, 1100°C, 1150°C and 1200°C), emphasizing a dependence of the diffusion coefficient as a square root of the boron diffusion concentration. It is shown that the comparison of the theoretical results and some experimental diffusion data after diffusion at 1050°C shows a very good agreement, well supporting the analytical modeling. On this basis, the chemical etching rate and the etching time are simulated as a function of the boron diffusion depth in silicon for various etching solutions and etching conditions, providing suitable guiding curves for practical applications in the bulk micromachining technology
{"title":"ANALYTICAL MODELING AND SIMULATION OF THE CHEMICAL ETCHING PROCEss OF THE BORON-DOPED SILICON LAYERS FROM BBr3 SOURCE in the micromachining technology","authors":"F. Găiseanu","doi":"10.56082/annalsarsciinfo.2021.1-2.45","DOIUrl":"https://doi.org/10.56082/annalsarsciinfo.2021.1-2.45","url":null,"abstract":"The boron-doped silicon layers commonly used to fabricate various micro-mechanical elements, particularly silicon membranes, are efficient stop-etching barriers, so their control is crucial in the bulk micromachining technology. As the properties of the boron doped layers depends on the type of the doping source and on the diffusion depth in the silicon bulk, a particular analysis should be applied in each specific case. In this paper there are reported the results of an analytical modeling of the boron diffusion profile in silicon, which are applied to simulate the boron diffusion profile at high diffusion temperatures (1050°C, 1100°C, 1150°C and 1200°C), emphasizing a dependence of the diffusion coefficient as a square root of the boron diffusion concentration. It is shown that the comparison of the theoretical results and some experimental diffusion data after diffusion at 1050°C shows a very good agreement, well supporting the analytical modeling. On this basis, the chemical etching rate and the etching time are simulated as a function of the boron diffusion depth in silicon for various etching solutions and etching conditions, providing suitable guiding curves for practical applications in the bulk micromachining technology","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79508318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.56082/annalsarscihist.2021.1.53
Jipa Rotaru
The 19th century was characterised by a deepening and diversification of the movements of European peoples oppressed by the great empires for national and social liberation. The French Revolution opened up the whole period of this century, and a wave of revolutions swept through almost the entire European continent, leading to the period being described as the 'century of revolutions' or the 'century of nations'. Tudor Vladimirescu was the exponent of the Romanian people's long-standing aspirations, the great personality produced by the Romanian realities of the early 19th century, who contributed to the acceleration of events and was at the forefront of the revolution.
{"title":"TUDOR VLADIMIRESCU’S ARMY – NUCLEUS OF THE MODERN ROMANIAN ARMY","authors":"Jipa Rotaru","doi":"10.56082/annalsarscihist.2021.1.53","DOIUrl":"https://doi.org/10.56082/annalsarscihist.2021.1.53","url":null,"abstract":"The 19th century was characterised by a deepening and diversification of the movements of European peoples oppressed by the great empires for national and social liberation. The French Revolution opened up the whole period of this century, and a wave of revolutions swept through almost the entire European continent, leading to the period being described as the 'century of revolutions' or the 'century of nations'. Tudor Vladimirescu was the exponent of the Romanian people's long-standing aspirations, the great personality produced by the Romanian realities of the early 19th century, who contributed to the acceleration of events and was at the forefront of the revolution.","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85765516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.56082/annalsarsciphyschem.2021.1.38
I. Popescu, P. Mursa, Olimpiu-Razvan Dumitrescu
The paper contains a synthesis of research results in the study of the level of environmental radioactivity obtained by using spectrometric technique, of high precision and high sensitivity, of atomic and nuclear radiations. Spectrometric technique were used to measure gamma nuclear radiation in determining the radioactivity of ash samples taken from the dumps of the ROMAG TERMO Drobeta Turnu Severin thermal power plant, Mehedinți county. By gamma spectrometry with high energy resolution semiconductor detector, high efficiency and protection for the cosmic radiation background (low radiation background) was determined the radioactivity of ash samples, taken from two coal dumps from ROMAG TERMO Drobeta Turnu Severin power plants, Romania. The results showed that the activities of the main radionuclides in the environmental samples including, 228Ac (7.5 ÷ 18.7 Bq/kg), 226Ra (6.2 ÷ 21.3 Bq/kg), 137Cs (0.3 ÷ 1, 53(Bq/kg) and 40K (169 ÷ 362 Bq/kg) are among the lowest values found compared to the maximum allowed limits.
本文综合了利用高精度、高灵敏度的原子辐射和核辐射光谱技术研究环境放射性水平的研究成果。在确定从Mehedinți县ROMAG TERMO Drobeta Turnu Severin热电厂垃圾场采集的灰烬样本的放射性时，采用了光谱技术来测量伽马核辐射。采用高能量分辨率半导体探测器的伽马能谱法，对罗马尼亚ROMAG TERMO Drobeta turu Severin电厂两个煤场的煤灰样品进行了高效和低辐射本底保护(低辐射本底)的放射性测定。结果表明，环境样品中主要放射性核素的活度为:228Ac (7.5 ÷ 18.7 Bq/kg)、226Ra (6.2 ÷ 21.3 Bq/kg)、137Cs (0.3 ÷ 1,53 (Bq/kg)和40K (169 ÷ 362 Bq/kg)，均为最低允许值。
{"title":"SPECTROMETRIC AND RADIOMETRIC TECHNIQUES OF NUCLEAR RADIATIONS IN THE ASSESSMENT OF ENVIRONMENTAL RADIOACTIVITY","authors":"I. Popescu, P. Mursa, Olimpiu-Razvan Dumitrescu","doi":"10.56082/annalsarsciphyschem.2021.1.38","DOIUrl":"https://doi.org/10.56082/annalsarsciphyschem.2021.1.38","url":null,"abstract":"The paper contains a synthesis of research results in the study of the level of environmental radioactivity obtained by using spectrometric technique, of high precision and high sensitivity, of atomic and nuclear radiations. Spectrometric technique were used to measure gamma nuclear radiation in determining the radioactivity of ash samples taken from the dumps of the ROMAG TERMO Drobeta Turnu Severin thermal power plant, Mehedinți county. By gamma spectrometry with high energy resolution semiconductor detector, high efficiency and protection for the cosmic radiation background (low radiation background) was determined the radioactivity of ash samples, taken from two coal dumps from ROMAG TERMO Drobeta Turnu Severin power plants, Romania. The results showed that the activities of the main radionuclides in the environmental samples including, 228Ac (7.5 ÷ 18.7 Bq/kg), 226Ra (6.2 ÷ 21.3 Bq/kg), 137Cs (0.3 ÷ 1, 53(Bq/kg) and 40K (169 ÷ 362 Bq/kg) are among the lowest values found compared to the maximum allowed limits.","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"50 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72686236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.56082/annalsarsciphyschem.2021.1.29
H. Alexandru, Marinel Dan, C. Ganea
Triglycine sulphate crystal (TGS) is a hybrid organic-inorganic ferroelectric crystal with a large electronic band-gap, transparent in visible spectra. It has large applications in electronics, as thermal IR detector. Pure and doped TGS crystals of 3-5 cm linear dimensions were grown at constant temperature in the paraelectric phase (52 oC), by slow solvent evaporation. Pure TGS samples show non-reproducible values of permittivity and losses in the ferroelectric phase after the “excursion” in the paraelectric phase. Walking up and down the crystal temperature, using a special program, the permitivity and losses were automatically recorded and analyzed. There is a continuous decrease of permittivity towards an equilibrium value during a long period of time. Previous AFM measurements from the literature have revealed peculiar aspects of domain dynamics. The relaxation process of permittivity was considered according to the equation er = A - B exp(-t/t). However, surprisingly, there is not a unique relaxation time t. For the first 500 sec (or so), the relaxation time is t » 7 minutes, while between the next time decades 1.000 - 10.000 - 100.000 sec, it is approximately 1 hour and 8 h respectively. The process is related with the ferroelectric domain’s dynamics, which are more or less strongly pined by dislocations or some other lattice defects.
硫酸甘油三酯晶体(TGS)是一种有机-无机杂化铁电晶体，具有较大的电子带隙，可见光谱透明。它在电子领域有广泛的应用，如热红外探测器。通过缓慢的溶剂蒸发，在52℃的准电相中恒温生长出线性尺寸为3-5 cm的纯和掺杂TGS晶体。纯TGS样品在准电相“偏移”后，铁电相的介电常数和损耗值不可重现。在晶体温度上下行走时，使用专用程序自动记录和分析介电常数和损耗。在很长一段时间内，介电常数不断地向一个平衡值下降。以前的AFM测量从文献中揭示了域动力学的特殊方面。根据方程er = A - B exp(-t/t)考虑介电常数的弛豫过程。然而，令人惊讶的是，没有一个唯一的弛豫时间t。在前500秒(大约)，弛豫时间为t»7分钟，而在接下来的几十年中，1.000 - 10.000 - 100.000秒，分别约为1小时和8小时。这一过程与铁电畴的动力学有关，而铁电畴的动力学或多或少受到位错或其他晶格缺陷的强烈影响。
{"title":"TRIGLYCINE SULPHATE DYNAMICS OF DOMAINS IN RELATION WITH TEMPERATURE AND BIAS FIELD","authors":"H. Alexandru, Marinel Dan, C. Ganea","doi":"10.56082/annalsarsciphyschem.2021.1.29","DOIUrl":"https://doi.org/10.56082/annalsarsciphyschem.2021.1.29","url":null,"abstract":"Triglycine sulphate crystal (TGS) is a hybrid organic-inorganic ferroelectric crystal with a large electronic band-gap, transparent in visible spectra. It has large applications in electronics, as thermal IR detector. Pure and doped TGS crystals of 3-5 cm linear dimensions were grown at constant temperature in the paraelectric phase (52 oC), by slow solvent evaporation. Pure TGS samples show non-reproducible values of permittivity and losses in the ferroelectric phase after the “excursion” in the paraelectric phase. Walking up and down the crystal temperature, using a special program, the permitivity and losses were automatically recorded and analyzed. There is a continuous decrease of permittivity towards an equilibrium value during a long period of time. Previous AFM measurements from the literature have revealed peculiar aspects of domain dynamics. The relaxation process of permittivity was considered according to the equation er = A - B exp(-t/t). However, surprisingly, there is not a unique relaxation time t. For the first 500 sec (or so), the relaxation time is t » 7 minutes, while between the next time decades 1.000 - 10.000 - 100.000 sec, it is approximately 1 hour and 8 h respectively. The process is related with the ferroelectric domain’s dynamics, which are more or less strongly pined by dislocations or some other lattice defects.","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87605293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.56082/annalsarsciinfo.2021.1-2.57
D. Chiper
This work presents an efficient hardware implementation of a hardware accelerator for the computation of the Modified Discrete Sine transform (MDST) using a new VLSI algorithm based on a appropriate reformulation of the MDST algorithm using some auxiliary input and output sequences. The obtained hardware implementation is using a low complexity implementation based on only adders/subtracters and has a reduced critical path that can be exploited to obtain a significant reduction of the power consumption.
{"title":"A HARDWARE ACCELERATOR FOR THE COMPUTATION OF MODIFIED DISCRETE SINE TRANSFORM","authors":"D. Chiper","doi":"10.56082/annalsarsciinfo.2021.1-2.57","DOIUrl":"https://doi.org/10.56082/annalsarsciinfo.2021.1-2.57","url":null,"abstract":"This work presents an efficient hardware implementation of a hardware accelerator for the computation of the Modified Discrete Sine transform (MDST) using a new VLSI algorithm based on a appropriate reformulation of the MDST algorithm using some auxiliary input and output sequences. The obtained hardware implementation is using a low complexity implementation based on only adders/subtracters and has a reduced critical path that can be exploited to obtain a significant reduction of the power consumption.","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72872584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.56082/annalsarscihist.2021.1.82
Mihai D. Drecin
Known for his research on the elements of national unity which rose and developed in the minds of all Romanians and which eventually led to the establishment of Greater Romania, the great historian Nicolae Iorga identifies the stages through which the national sentiment of Romanians on both sides of the Carpathians had evolved from the Middle Ages to the modern era. After having researched the published works of Romanian humanists and Enlightenment writers in the archives and libraries of Romania, Bucovina and Transylvania, Nicolae Iorga identified the following stages of Romanian nationalist manifestations: primitive nationalism (9th to l0th century), enduring nationalism - the foundation of modern nationalism (17th century), definitive nationalism (18th century), and modern nationalism (the 1848/1849 generation). While Transylvanian nationalism was petitionary in nature, the nationalism that manifested south and east of the Carpathians was labelled as political, as it was accompanied by concrete own achievements. "Romanian nationalism" is seen as cultural and democratic, based on the traditional hospitality of the Romanian peasants and the sentiment of unity. These are the features of the Romanian national sentiment defined by Nicolae Iorga in 1922, which were used as a foundation for the Nationalist Democratic Party, the party he established in 1910 and whose leader he was until 1938.
{"title":"NICOLAE IORGA ON THE DEVELOPMENT STAGES OF ROMANIAN NATIONALISM","authors":"Mihai D. Drecin","doi":"10.56082/annalsarscihist.2021.1.82","DOIUrl":"https://doi.org/10.56082/annalsarscihist.2021.1.82","url":null,"abstract":"Known for his research on the elements of national unity which rose and developed in the minds of all Romanians and which eventually led to the establishment of Greater Romania, the great historian Nicolae Iorga identifies the stages through which the national sentiment of Romanians on both sides of the Carpathians had evolved from the Middle Ages to the modern era. After having researched the published works of Romanian humanists and Enlightenment writers in the archives and libraries of Romania, Bucovina and Transylvania, Nicolae Iorga identified the following stages of Romanian nationalist manifestations: primitive nationalism (9th to l0th century), enduring nationalism - the foundation of modern nationalism (17th century), definitive nationalism (18th century), and modern nationalism (the 1848/1849 generation). While Transylvanian nationalism was petitionary in nature, the nationalism that manifested south and east of the Carpathians was labelled as political, as it was accompanied by concrete own achievements. \"Romanian nationalism\" is seen as cultural and democratic, based on the traditional hospitality of the Romanian peasants and the sentiment of unity. These are the features of the Romanian national sentiment defined by Nicolae Iorga in 1922, which were used as a foundation for the Nationalist Democratic Party, the party he established in 1910 and whose leader he was until 1938.","PeriodicalId":32445,"journal":{"name":"Annals Series on History and Archaeology Academy of Romanian Scientists","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78823897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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