The correlation coefficient between bird eggs volume to surface ratio and incubation time in 28 eggs (from Struthio camelus to Calypte anna) is R =0.561. The eggs volume (Vegg, m3), eggs surface (Segg, m2), incubation times (Tinc, s) and oxygen permeability coefficient (KO2, m/s) trough inner egg membrane are connected by allometric relationship: Vegg /(Segg·Tinc)=KO2 (for 1 Torr oxygen pressure trough egg shell membranes). This relationship allows calculate dynamics of oxygen permeability coefficient trough inner egg shell membrane during bird embryonal development.The correlation coefficient between bird eggs volume to surface ratio and incubation time in 28 eggs (from Struthio camelus to Calypte anna) is R =0.561. The eggs volume (Vegg, m3), eggs surface (Segg, m2), incubation times (Tinc, s) and oxygen permeability coefficient (KO2, m/s) trough inner egg membrane are connected by allometric relationship: Vegg /(Segg·Tinc)=KO2 (for 1 Torr oxygen pressure trough egg shell membranes). This relationship allows calculate dynamics of oxygen permeability coefficient trough inner egg shell membrane during bird embryonal development.
{"title":"Allometric relationship between volume to surface ratio and incubation days in bird’s eggs","authors":"A. Atanasov","doi":"10.1063/1.5138021","DOIUrl":"https://doi.org/10.1063/1.5138021","url":null,"abstract":"The correlation coefficient between bird eggs volume to surface ratio and incubation time in 28 eggs (from Struthio camelus to Calypte anna) is R =0.561. The eggs volume (Vegg, m3), eggs surface (Segg, m2), incubation times (Tinc, s) and oxygen permeability coefficient (KO2, m/s) trough inner egg membrane are connected by allometric relationship: Vegg /(Segg·Tinc)=KO2 (for 1 Torr oxygen pressure trough egg shell membranes). This relationship allows calculate dynamics of oxygen permeability coefficient trough inner egg shell membrane during bird embryonal development.The correlation coefficient between bird eggs volume to surface ratio and incubation time in 28 eggs (from Struthio camelus to Calypte anna) is R =0.561. The eggs volume (Vegg, m3), eggs surface (Segg, m2), incubation times (Tinc, s) and oxygen permeability coefficient (KO2, m/s) trough inner egg membrane are connected by allometric relationship: Vegg /(Segg·Tinc)=KO2 (for 1 Torr oxygen pressure trough egg shell membranes). This relationship allows calculate dynamics of oxygen permeability coefficient trough inner egg shell membrane during bird embryonal development.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80344752","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}
This study investigates the structural compression properties of the additive manufactured (AM) Ti-6Al-4V lattice structure using LS-Dyna simulation analysis software and calculates its mechanical properties under different porosities and different pattern designs. Ti-6Al-4V alloys formed by using additive manufacturing produced elliptic holes with long and short axes due to the difference in the direction of construction. These holes could be eliminated and the materials could be compacted by hot isostatic pressing (HIP) treatment. Compactness of the frame element achieved 99.9% and drastically reduced the anisotropic behavior caused by the fabrication process. For the experimental testing, the samples with different porosities and the A-type and AZ-type designs were employed in compression experiment. In the meantime, the Young’s modulus, the yield strength, plateau stress and other mechanical behavior were investigated by CAE simulation. The plateau stress, which is an important property for some biomedical applications, was calculated with satisfactory accuracy compared with experimental measurements. The simulated results of the designed lattice structures with different porosity contents were able to adopt the Gibson-Ashby model to determine their failure mechanisms. Finally, the CAE simulation for the design of an auxetic material was demonstrated.This study investigates the structural compression properties of the additive manufactured (AM) Ti-6Al-4V lattice structure using LS-Dyna simulation analysis software and calculates its mechanical properties under different porosities and different pattern designs. Ti-6Al-4V alloys formed by using additive manufacturing produced elliptic holes with long and short axes due to the difference in the direction of construction. These holes could be eliminated and the materials could be compacted by hot isostatic pressing (HIP) treatment. Compactness of the frame element achieved 99.9% and drastically reduced the anisotropic behavior caused by the fabrication process. For the experimental testing, the samples with different porosities and the A-type and AZ-type designs were employed in compression experiment. In the meantime, the Young’s modulus, the yield strength, plateau stress and other mechanical behavior were investigated by CAE simulation. The plateau stress, which is an important property for some biome...
{"title":"CAE analysis on the mechanical properties of a 3D-printed lattice structure from Ti-6Al-4V for biomedical applications","authors":"Yu-lian Lin, Chun-Ying Lee, Jhewn-Kuang Chen","doi":"10.1063/1.5138067","DOIUrl":"https://doi.org/10.1063/1.5138067","url":null,"abstract":"This study investigates the structural compression properties of the additive manufactured (AM) Ti-6Al-4V lattice structure using LS-Dyna simulation analysis software and calculates its mechanical properties under different porosities and different pattern designs. Ti-6Al-4V alloys formed by using additive manufacturing produced elliptic holes with long and short axes due to the difference in the direction of construction. These holes could be eliminated and the materials could be compacted by hot isostatic pressing (HIP) treatment. Compactness of the frame element achieved 99.9% and drastically reduced the anisotropic behavior caused by the fabrication process. For the experimental testing, the samples with different porosities and the A-type and AZ-type designs were employed in compression experiment. In the meantime, the Young’s modulus, the yield strength, plateau stress and other mechanical behavior were investigated by CAE simulation. The plateau stress, which is an important property for some biomedical applications, was calculated with satisfactory accuracy compared with experimental measurements. The simulated results of the designed lattice structures with different porosity contents were able to adopt the Gibson-Ashby model to determine their failure mechanisms. Finally, the CAE simulation for the design of an auxetic material was demonstrated.This study investigates the structural compression properties of the additive manufactured (AM) Ti-6Al-4V lattice structure using LS-Dyna simulation analysis software and calculates its mechanical properties under different porosities and different pattern designs. Ti-6Al-4V alloys formed by using additive manufacturing produced elliptic holes with long and short axes due to the difference in the direction of construction. These holes could be eliminated and the materials could be compacted by hot isostatic pressing (HIP) treatment. Compactness of the frame element achieved 99.9% and drastically reduced the anisotropic behavior caused by the fabrication process. For the experimental testing, the samples with different porosities and the A-type and AZ-type designs were employed in compression experiment. In the meantime, the Young’s modulus, the yield strength, plateau stress and other mechanical behavior were investigated by CAE simulation. The plateau stress, which is an important property for some biome...","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"153 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76151213","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}
M. Grodzynskyi, A. Melnyk, O. Obodovskyi, D. Svidzinska
The mathematical reliability theory and landscape mapping were used for quantitative assessment and mapping of the probabilities of hazardous processes caused by the wind for the landscapes of fluvioglacial sandy lowlands of the Eastern Europe. Volyn province serves as a case study area in the research. Calculations and maps show that for a time period of 10 years soil deflation and sand blowing are probable for almost all the province’s area, although before the land reclamation works these processes have been observed within arable lands only.The mathematical reliability theory and landscape mapping were used for quantitative assessment and mapping of the probabilities of hazardous processes caused by the wind for the landscapes of fluvioglacial sandy lowlands of the Eastern Europe. Volyn province serves as a case study area in the research. Calculations and maps show that for a time period of 10 years soil deflation and sand blowing are probable for almost all the province’s area, although before the land reclamation works these processes have been observed within arable lands only.
{"title":"Evaluation and mapping of the hazardous deflation and sand blowing in Volyn province, Ukraine","authors":"M. Grodzynskyi, A. Melnyk, O. Obodovskyi, D. Svidzinska","doi":"10.1063/1.5138045","DOIUrl":"https://doi.org/10.1063/1.5138045","url":null,"abstract":"The mathematical reliability theory and landscape mapping were used for quantitative assessment and mapping of the probabilities of hazardous processes caused by the wind for the landscapes of fluvioglacial sandy lowlands of the Eastern Europe. Volyn province serves as a case study area in the research. Calculations and maps show that for a time period of 10 years soil deflation and sand blowing are probable for almost all the province’s area, although before the land reclamation works these processes have been observed within arable lands only.The mathematical reliability theory and landscape mapping were used for quantitative assessment and mapping of the probabilities of hazardous processes caused by the wind for the landscapes of fluvioglacial sandy lowlands of the Eastern Europe. Volyn province serves as a case study area in the research. Calculations and maps show that for a time period of 10 years soil deflation and sand blowing are probable for almost all the province’s area, although before the land reclamation works these processes have been observed within arable lands only.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78093703","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}
The paper is aimed at using modern technology, specifically the programmable toy Bee-Bot, to teach pre-school children, helping them develop their computational thinking as well as logic and abstract thinking and pre-mathematical concepts. Moreover, it also introduces an activity which uses the aforementioned programmable toy to help children develop not only their computational thinking, but also their problem-analysis and problem-solving skills.The paper is aimed at using modern technology, specifically the programmable toy Bee-Bot, to teach pre-school children, helping them develop their computational thinking as well as logic and abstract thinking and pre-mathematical concepts. Moreover, it also introduces an activity which uses the aforementioned programmable toy to help children develop not only their computational thinking, but also their problem-analysis and problem-solving skills.
{"title":"How to develop computational thinking in pre-school children","authors":"T. Havlaskova, Z. Homanova, K. Kostolányová","doi":"10.1063/1.5137971","DOIUrl":"https://doi.org/10.1063/1.5137971","url":null,"abstract":"The paper is aimed at using modern technology, specifically the programmable toy Bee-Bot, to teach pre-school children, helping them develop their computational thinking as well as logic and abstract thinking and pre-mathematical concepts. Moreover, it also introduces an activity which uses the aforementioned programmable toy to help children develop not only their computational thinking, but also their problem-analysis and problem-solving skills.The paper is aimed at using modern technology, specifically the programmable toy Bee-Bot, to teach pre-school children, helping them develop their computational thinking as well as logic and abstract thinking and pre-mathematical concepts. Moreover, it also introduces an activity which uses the aforementioned programmable toy to help children develop not only their computational thinking, but also their problem-analysis and problem-solving skills.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83275813","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}
Takefumi Yamashita, R. Okajima, K. Miyanabe, K. Tsumoto
Tyrosine phosphorylation and tyrosine sulfation are important post-translational modifications in biological systems. In this study, we developed FUJI force-field parameters for sulfo-tyrosine and phospho-tyrosine residues to investigate the effect of tyrosine modification. Then, we applied the new parameters to molecular dynamics simulations of CCR5-derived peptide (pep1) systems. We found that the effect of phosphorylation on the structure was much greater than that of sulfation. In addition, we characterized the effects of sulfation and phosphorylation on the interaction between pep1 and its antibody 4B08 by using the FUJI force-field parameters developed here.
{"title":"Modified AMBER force-field (FUJI) parameters for sulfated and phosphorylated tyrosine residues: Development and application to CCR5-derived peptide systems","authors":"Takefumi Yamashita, R. Okajima, K. Miyanabe, K. Tsumoto","doi":"10.1063/1.5137924","DOIUrl":"https://doi.org/10.1063/1.5137924","url":null,"abstract":"Tyrosine phosphorylation and tyrosine sulfation are important post-translational modifications in biological systems. In this study, we developed FUJI force-field parameters for sulfo-tyrosine and phospho-tyrosine residues to investigate the effect of tyrosine modification. Then, we applied the new parameters to molecular dynamics simulations of CCR5-derived peptide (pep1) systems. We found that the effect of phosphorylation on the structure was much greater than that of sulfation. In addition, we characterized the effects of sulfation and phosphorylation on the interaction between pep1 and its antibody 4B08 by using the FUJI force-field parameters developed here.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"342 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82965181","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}
The aim of our investigation was to find out the differences in perceived satisfaction with health within three evaluated groups with different level of health status: healthy people, people with noncommunicable diseases (NCDs) and people with disabilities. Two main groups of people were recruited for the study: (1) active people (n=607; regularly participating in sport activities) and (2) inactive people (n= 494; not participating in sports activities). We used second part of S.QUA.L.A. questionnaire where participants evaluated perceived satisfaction with 23 indicators using the 5-point rating scale. The lower mean score meant the higher perceived satisfaction. For our investigation we analysed perceived satisfaction with only one indicator “overall health”. Statistical analysis was performed using IBM SPSS version 23.0. The data were statistically tested by the Kolmogorov-Smirnov test of the sample distribution normality. One-way ANOVA was used to determine the differences in perceived satisfaction with health within three evaluated groups based on their health status. Post-hoc Bonferroni test was used to examine the differences in satisfaction with health between two groups of population based on their health status. Student’s two-sample t test was used to examine the differences between active and inactive people within each population group based on their health status. We found the highest level of perceived satisfaction with overall health in the group of healthy actively living population and the lowest perceived satisfaction with overall health in the group of inactive people with NCDs. In the group of active as well as inactive people we found significantly higher perceived satisfaction with health in the group of healthy people comparing people with NCDs and people with disabilities. No significant differences were found in the comparison of perceived satisfaction with overall health between people with NCDs and people with disabilities nor in the group of active neither inactive population. In all groups of people related to their health status the significantly higher perceived satisfaction with health was demonstrated by actively living populations comparing inactive population.The aim of our investigation was to find out the differences in perceived satisfaction with health within three evaluated groups with different level of health status: healthy people, people with noncommunicable diseases (NCDs) and people with disabilities. Two main groups of people were recruited for the study: (1) active people (n=607; regularly participating in sport activities) and (2) inactive people (n= 494; not participating in sports activities). We used second part of S.QUA.L.A. questionnaire where participants evaluated perceived satisfaction with 23 indicators using the 5-point rating scale. The lower mean score meant the higher perceived satisfaction. For our investigation we analysed perceived satisfaction with only one indicator “overall health
{"title":"Health status differences in perceived satisfaction with health of active and inactive population","authors":"Dagmar Nemček, E. Bendíková, Petra Kurková","doi":"10.1063/1.5137993","DOIUrl":"https://doi.org/10.1063/1.5137993","url":null,"abstract":"The aim of our investigation was to find out the differences in perceived satisfaction with health within three evaluated groups with different level of health status: healthy people, people with noncommunicable diseases (NCDs) and people with disabilities. Two main groups of people were recruited for the study: (1) active people (n=607; regularly participating in sport activities) and (2) inactive people (n= 494; not participating in sports activities). We used second part of S.QUA.L.A. questionnaire where participants evaluated perceived satisfaction with 23 indicators using the 5-point rating scale. The lower mean score meant the higher perceived satisfaction. For our investigation we analysed perceived satisfaction with only one indicator “overall health”. Statistical analysis was performed using IBM SPSS version 23.0. The data were statistically tested by the Kolmogorov-Smirnov test of the sample distribution normality. One-way ANOVA was used to determine the differences in perceived satisfaction with health within three evaluated groups based on their health status. Post-hoc Bonferroni test was used to examine the differences in satisfaction with health between two groups of population based on their health status. Student’s two-sample t test was used to examine the differences between active and inactive people within each population group based on their health status. We found the highest level of perceived satisfaction with overall health in the group of healthy actively living population and the lowest perceived satisfaction with overall health in the group of inactive people with NCDs. In the group of active as well as inactive people we found significantly higher perceived satisfaction with health in the group of healthy people comparing people with NCDs and people with disabilities. No significant differences were found in the comparison of perceived satisfaction with overall health between people with NCDs and people with disabilities nor in the group of active neither inactive population. In all groups of people related to their health status the significantly higher perceived satisfaction with health was demonstrated by actively living populations comparing inactive population.The aim of our investigation was to find out the differences in perceived satisfaction with health within three evaluated groups with different level of health status: healthy people, people with noncommunicable diseases (NCDs) and people with disabilities. Two main groups of people were recruited for the study: (1) active people (n=607; regularly participating in sport activities) and (2) inactive people (n= 494; not participating in sports activities). We used second part of S.QUA.L.A. questionnaire where participants evaluated perceived satisfaction with 23 indicators using the 5-point rating scale. The lower mean score meant the higher perceived satisfaction. For our investigation we analysed perceived satisfaction with only one indicator “overall health","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88564996","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}
I. Zaitseva, O. Malafeyev, N. Poddubnaya, D. Shlaev, Svetlana Bogdanova
This article discusses two classes of models that describe the development dynamics of the industry labor force with pure competition. In the first case, it is assumed that the factors influencing the production process are strictly deterministic. The second class of models is based on the assumption of stochastic dynamics of external (exogenous) parameters. In the first case, a deterministic model of the development dynamics of the industry labor forces is formulated. In the second case, its generalization to the stochastic case is considered.This article discusses two classes of models that describe the development dynamics of the industry labor force with pure competition. In the first case, it is assumed that the factors influencing the production process are strictly deterministic. The second class of models is based on the assumption of stochastic dynamics of external (exogenous) parameters. In the first case, a deterministic model of the development dynamics of the industry labor forces is formulated. In the second case, its generalization to the stochastic case is considered.
{"title":"Deterministic and stochastic models of labor forces dynamics in the industry with pure competition","authors":"I. Zaitseva, O. Malafeyev, N. Poddubnaya, D. Shlaev, Svetlana Bogdanova","doi":"10.1063/1.5138091","DOIUrl":"https://doi.org/10.1063/1.5138091","url":null,"abstract":"This article discusses two classes of models that describe the development dynamics of the industry labor force with pure competition. In the first case, it is assumed that the factors influencing the production process are strictly deterministic. The second class of models is based on the assumption of stochastic dynamics of external (exogenous) parameters. In the first case, a deterministic model of the development dynamics of the industry labor forces is formulated. In the second case, its generalization to the stochastic case is considered.This article discusses two classes of models that describe the development dynamics of the industry labor force with pure competition. In the first case, it is assumed that the factors influencing the production process are strictly deterministic. The second class of models is based on the assumption of stochastic dynamics of external (exogenous) parameters. In the first case, a deterministic model of the development dynamics of the industry labor forces is formulated. In the second case, its generalization to the stochastic case is considered.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89085404","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}
The aim of this study is to check which type of precipitation control the activity of Garbatka landslide (southern Poland, Central Sudeten Mts) from a decadal perspective. In order to achieve aforesaid goal dendrochronological methods of reconstructing landslide activity have been applied. The study has revealed dendrochronology to be an efficient method for determining triggering factors of landslide activity as the method provides long data sets on past landslide activity which are suitable for statistical analyses and comparisons with precipitation record. In case of the Garbatka landslide the oldest dated landslide activity event is 1942. Dendrochronological record has been compared with precipitation record from the nearest gauging station which is available since 1951. Correlation of data on landslide activity and precipitation data has shown that the landslide under study is sensitive to high short-term precipitation totals (up to 5-days) and to extremely long-term precipitation totals (60-days and 90-days). The main factor driving the activity of the landslide under study is total annual precipitation which is characterized by the highest level of correlation coefficient. However, the nature of the relation between precipitation and landsliding is complex.The aim of this study is to check which type of precipitation control the activity of Garbatka landslide (southern Poland, Central Sudeten Mts) from a decadal perspective. In order to achieve aforesaid goal dendrochronological methods of reconstructing landslide activity have been applied. The study has revealed dendrochronology to be an efficient method for determining triggering factors of landslide activity as the method provides long data sets on past landslide activity which are suitable for statistical analyses and comparisons with precipitation record. In case of the Garbatka landslide the oldest dated landslide activity event is 1942. Dendrochronological record has been compared with precipitation record from the nearest gauging station which is available since 1951. Correlation of data on landslide activity and precipitation data has shown that the landslide under study is sensitive to high short-term precipitation totals (up to 5-days) and to extremely long-term precipitation totals (60-days and...
{"title":"Meteorological triggers of landslide activity and hazard analysed from tree rings (Central Sudetes, Southern Poland)","authors":"M. Wistuba","doi":"10.1063/1.5138043","DOIUrl":"https://doi.org/10.1063/1.5138043","url":null,"abstract":"The aim of this study is to check which type of precipitation control the activity of Garbatka landslide (southern Poland, Central Sudeten Mts) from a decadal perspective. In order to achieve aforesaid goal dendrochronological methods of reconstructing landslide activity have been applied. The study has revealed dendrochronology to be an efficient method for determining triggering factors of landslide activity as the method provides long data sets on past landslide activity which are suitable for statistical analyses and comparisons with precipitation record. In case of the Garbatka landslide the oldest dated landslide activity event is 1942. Dendrochronological record has been compared with precipitation record from the nearest gauging station which is available since 1951. Correlation of data on landslide activity and precipitation data has shown that the landslide under study is sensitive to high short-term precipitation totals (up to 5-days) and to extremely long-term precipitation totals (60-days and 90-days). The main factor driving the activity of the landslide under study is total annual precipitation which is characterized by the highest level of correlation coefficient. However, the nature of the relation between precipitation and landsliding is complex.The aim of this study is to check which type of precipitation control the activity of Garbatka landslide (southern Poland, Central Sudeten Mts) from a decadal perspective. In order to achieve aforesaid goal dendrochronological methods of reconstructing landslide activity have been applied. The study has revealed dendrochronology to be an efficient method for determining triggering factors of landslide activity as the method provides long data sets on past landslide activity which are suitable for statistical analyses and comparisons with precipitation record. In case of the Garbatka landslide the oldest dated landslide activity event is 1942. Dendrochronological record has been compared with precipitation record from the nearest gauging station which is available since 1951. Correlation of data on landslide activity and precipitation data has shown that the landslide under study is sensitive to high short-term precipitation totals (up to 5-days) and to extremely long-term precipitation totals (60-days and...","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75668273","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}
O. Malafeyev, I. Zaitseva, Denis Lovyannikov, K. Kostyukov, T. Svechinskaya
{"title":"Study of the equilibrium of labor resources in differential games of supporting the projects’ joint investment processes","authors":"O. Malafeyev, I. Zaitseva, Denis Lovyannikov, K. Kostyukov, T. Svechinskaya","doi":"10.1063/1.5138094","DOIUrl":"https://doi.org/10.1063/1.5138094","url":null,"abstract":"","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78272407","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}
D. Valev, A. Atanasov, R. Werner, Ivan Stanchev Mindov, A. Andonova, R. Martinov
We carried out a statistical analysis of the monthly cerebral malaria cases in Papua New Guinea for the period January 1987 - December 1996 and also the analysis of the monthly solar activity and geomagnetic activity for the same period. The solar activity was described by the sunspot numbers and the F10.7 solar flux. As a measure of the geomagnetic activity the aa-indices were used. A close negative correlation between cerebral malaria cases and solar activity indices was found. The correlation of cerebral malaria cases with F10.7 reaches −0.66, and −0.70 with sunspot numbers. The confidence level of relationships was determined by Student’s t-test and reaches 0.00001. All calculations were performed with raw data without smoothing which supports the correctness of the obtained results. The close correlations of cerebral malaria found in Papua New Guinea with solar activity indices could be important for the prognosis of cerebral malaria in this region.We carried out a statistical analysis of the monthly cerebral malaria cases in Papua New Guinea for the period January 1987 - December 1996 and also the analysis of the monthly solar activity and geomagnetic activity for the same period. The solar activity was described by the sunspot numbers and the F10.7 solar flux. As a measure of the geomagnetic activity the aa-indices were used. A close negative correlation between cerebral malaria cases and solar activity indices was found. The correlation of cerebral malaria cases with F10.7 reaches −0.66, and −0.70 with sunspot numbers. The confidence level of relationships was determined by Student’s t-test and reaches 0.00001. All calculations were performed with raw data without smoothing which supports the correctness of the obtained results. The close correlations of cerebral malaria found in Papua New Guinea with solar activity indices could be important for the prognosis of cerebral malaria in this region.
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