Social studies combines social sciences and the humanities, and has the purpose of raising effective citizens. There are many different areas integrated in social studies including history, geography, philosophy and p...Social studies combines social sciences and the humanities, and has the purpose of raising effective citizens. There are many different areas integrated in social studies including history, geography, philosophy and psychology. Social studies is the presentation of the information produced by these areas in framework of a curriculum. Social studies curriculum is a multi-dimensional program. One of the objectives of this program is to raise individuals who know about their past and shape their future with the help of the lessons they learn from history. In this context, the aim of this study is to determine sixth grade students＇ perspective to the history subjects in social studies curriculum, learn the place of history in their lives and see how history subjects are taught in classrooms. This study is limited to the 2014-2015 academic year. The participants were identified using random sampling, a probability-based sampling method. This is a qualitative study. The study includes interviews with eight sixth graders, of whom four were female and four were male. The study data were collected in semi-structured interviews. The interviews were recorded and transcribed. The data were analyzed using descriptive analysis. The study found that the students enjoyed learning history, had positive opinions about their history grades and their teachers continued to teach history using traditional methods. They also felt that history contributed to their lives. Based on the data collected, the study makes specific suggestions.展开更多
In Chinese language studies, both “The Textual Research on Historical Documents” and “The Comparative Study of Historical Data” are traditional in methodology and they both deserve being treasured, passed on, and ...In Chinese language studies, both “The Textual Research on Historical Documents” and “The Comparative Study of Historical Data” are traditional in methodology and they both deserve being treasured, passed on, and further developed. It will certainly do harm to the development of academic research if any of the two methods is given unreasonable priority. The author claims that the best or one of the best methodologies of the historical study of Chinese language is the combination of the two, hence a new interpretation of “The Double-proof Method”. Meanwhile, this essay is also an attempt to put forward “The Law of Quan-ma and Gui-mei” in Chinese language studies, in which the author believes that it is not advisable to either treat Gui-mei as Quan-ma or vice versa in linguistic research. It is crucial for us to respect always the language facts first, which is considered the very soul of linguistics.展开更多
Objective We aimed to evaluate the combined effect of a family history of cardiovascular disease（CVD） and high serum C‐reactive protein（CRP） on the stroke incidence in an Inner Mongolian population in China. Meth...Objective We aimed to evaluate the combined effect of a family history of cardiovascular disease（CVD） and high serum C‐reactive protein（CRP） on the stroke incidence in an Inner Mongolian population in China. Methods A prospective cohort study was conducted from June 2002 to July 2012, with 2,544 participants aged 20 years and over from Inner Mongolia, China. We categorized participants into four groups based on the family history of CVD and CRP levels. Results We adjusted for age; sex; smoking; drinking; hypertension; body mass index; waist circumference; and blood glucose, triglycerides, low‐density lipoprotein cholesterol, and high‐density lipoprotein cholesterol levels. Compared with the group with no family history of CVD/low CRP levels, the group with family history of CVD/high CRP levels had a hazard ratio（HR） of 1.78 [95% confidence interval（CI）, 1.03‐3.07; P = 0.039] of stroke, and an HR of 2.14（95% CI, 1.09‐4.20; P = 0.027） of ischemic stroke. The HRs of hemorrhagic stroke for the other three groups were not statistically significant（all P 〉 0.05）. Conclusion Participants with both a family history of CVD and high CRP levels had the highest stroke incidence, suggesting that high CRP levels may increase stroke risk, especially of ischemic stroke, among individuals with a family history of CVD.展开更多
Historical geographic information system construction echoes the call of academic development in the information era and demonstrates the in-depth advancement of history studies. In recent years, an increasing number ...Historical geographic information system construction echoes the call of academic development in the information era and demonstrates the in-depth advancement of history studies. In recent years, an increasing number of data platforms have been built to facilitate historical information storage, display, management and analysis. In such a context, the geographic information system(GIS) begins to contribute to the study of Chinese history. Its contribution is highlighted in nine areas: historical climate, fluvial landforms, town economies, rural settlements, hydraulic societies, environmental changes, ancient cities, ancient maps and HGIS-enabled research methods. The application of GIS to the study of Chinese history initiates a reform in research methods and at the same time upgrades the philosophy of history studies, facilitating the utilization of a diversity of historical data(documents, ancient maps, remote-sensing images, archaeological information, etc.) for dynamic tracing and multi-factor comprehensive research. At present, restricted by traditional disciplinary boundaries, the construction of HGIS platforms remains slow and insufficient, making it difficult to extensively apply GIS to the study of Chinese history.展开更多
Nitric acid or qiangshui强水(“strong liquid,”from lat.aqua fortis)was introduced to China multiple times by European missionaries during the Ming and Qing dynasties.Xu Guangqi徐光啟(1562-1633)was the first Chinese t...Nitric acid or qiangshui强水(“strong liquid,”from lat.aqua fortis)was introduced to China multiple times by European missionaries during the Ming and Qing dynasties.Xu Guangqi徐光啟(1562-1633)was the first Chinese to record related knowledge from his communication with Johann Schreck(1576-1630).Johann Adam Schall von Bell(1591-1666),Joachim Bouvet(1656-1730),and Matteo Ripa(1682-1746)independently described the substance to the Chinese in their writings,explaining production methods together with different applications such as separating and assaying of gold and silver,etching of iron or copperplates,and manufacturing of thermometers.This paper focuses on newly discovered Chinese materials,mainly from the Investigations of the Earth’s Interior(Kunyu gezhi坤輿格致,1640)by Schall von Bell and his Chinese collaborators,but also from the Record of Essentials of Inception and Completion(Kaicheng jiyao開成紀要)by Xu Guangqi.It analyzes different aspects of knowledge transmission processes including the identification of useful knowledge,the purpose of transmission,the sources of European knowledge,and the applied methods of translation and explanation.From these analyses we can better understand the reasons of their failure or success.展开更多
The famous female writer Ma Lihua in her well- known book The Red Mountain Ranges in East Tibet described the social status and influence of the Pangda family.She wrote:"The famous Pangda family in Tibetan pre-mo...The famous female writer Ma Lihua in her well- known book The Red Mountain Ranges in East Tibet described the social status and influence of the Pangda family.She wrote:"The famous Pangda family in Tibetan pre-modern society stands on both展开更多
This concise paper,delivered at a conference,addresses a broad topic with the goal of providing a condensed and inevitably subjective perspective.Initially,it outlines the primary characteristics that distinguish coin...This concise paper,delivered at a conference,addresses a broad topic with the goal of providing a condensed and inevitably subjective perspective.Initially,it outlines the primary characteristics that distinguish coins from other historical sources.Subsequently,it provides a succinct overview of numismatics,categorized into seven phases:1.Pre-1550(coins as reflections of vice and virtue);2.From circa 1550 to circa 1620(coins as testimony of authentic history);3.From circa 1650 to circa 1730(the heyday of the“Republic of Medals”);4.From circa 1730 to circa 1840(the decline of the“Republic of Medals”and the emergence of scientific practices by Viennese Jesuits);5.From circa 1840 to circa 1940(die-studies and art history);6.From circa 1940 to circa 2000(coins as instruments of exchange);7.Since 2000(cultural shift and digital humanities).展开更多
Hu sheep is an indigenous breed from the Taihu Lake Plain in China,known for its high fertility.Although Hu sheep belong to the Mongolian group,their demographic history and genetic architecture remain inconclusive.He...Hu sheep is an indigenous breed from the Taihu Lake Plain in China,known for its high fertility.Although Hu sheep belong to the Mongolian group,their demographic history and genetic architecture remain inconclusive.Here,we analyze 697 sheep genomes from representatives of Mongolian sheep breeds.Our study suggests that the ancestral Hu sheep first separated from the Mongolian group approximately 3000 years ago.As Hu sheep migrated from the north and flourished in the Taihu Lake Plain around 1000 years ago,they developed a unique genetic foundation and phenotypic characteristics,which are evident in the genomic footprints of selective sweeps and structural variation landscape.Genes associated with reproductive traits(BMPR1B and TDRD10)and horn phenotype(RXFP2)exhibit notable selective sweeps in the genome of Hu sheep.A genome-wide association analysis reveals that structural variations at LOC101110773,MAST2,and ZNF385B may significantly impact polledness,teat number,and early growth in Hu sheep,respectively.Our study offers insights into the evolutionary history of Hu sheep and may serve as a valuable genetic resource to enhance the understanding of complex traits in Hu sheep.展开更多
BACKGROUND: The etiology of insulinoma is poorly understood. Few studies investigated the possible roles of environmental factors and lifestyle in the pathogenesis of insulinoma. The aim of this study is to identify r...BACKGROUND: The etiology of insulinoma is poorly understood. Few studies investigated the possible roles of environmental factors and lifestyle in the pathogenesis of insulinoma. The aim of this study is to identify risk factors associated with occurrence of insulinoma in the Chinese population. METHODS: This study consisted of 196 patients with insulinoma and 233 controls. Demographic information of the patients and controls and risk factors of the disease were analyzed. Univariate and unconditional multivariable logistic regression analyses were made to estimate odds ratios (ORs) and possible risk factors. RESULTS: Approximately 68.88% (135/196) of the patients were from rural areas in contrast to 10.30% (24/233) of the controls (P【0.0001). This difference was confirmed by the multivariate analysis (OR=4.950; 95% CI: 2.928-8.370). Family history of pancreatic endocrine tumor (OR=16.754; 95% CI: 2.125-132.057) and other cancers (OR=2.360; 95% CI: 1.052-5.291) was also related to a high-risk population of insulinoma. CONCLUSION: Rural residents or people who have a family history of pancreatic endocrine tumor and other cancers are a high-risk population of insulinoma.展开更多
Background: Gastric cancer is the third most incident malignancy and the fifth leading cause of death in the world. In Brazil, it is the fourth most common tumour in men and the fifth in women. Familial aggregation of...Background: Gastric cancer is the third most incident malignancy and the fifth leading cause of death in the world. In Brazil, it is the fourth most common tumour in men and the fifth in women. Familial aggregation of this tumour is being studied and discussed by experts. Aim: Determine the frequency of family history of cancer in patients with gastric cancer, suggesting familial aggregation or increased risk for hereditary cancer syndromes. Methods: This is a retrospective cross-sectional study carried out from January 2011 to March 2015 at the Department of Abdominal and Pelvic Surgery of the Brazilian National Cancer Institute (INCA). Data were collected from electronic medical records and analyzed using SPSS Statistics? version 20. Results: 873 patients with gastric adenocarcinoma were analyzed. A family history of cancer was reported by 451 patients (51.6%), which reported cancer in 878 relatives, of which 110 (12.6%), reported having more than three relatives with any type of cancer. The most prevalent malignancies among these relatives were gastric cancer (21.3%) and breast cancer (9.5%). Conclusion: Most of the patients had cancer family history, being gastric cancer the most common. The high percentage of cancer family history confirms the importance of collecting this information, whose lack reflects professional negligence, as family history study can serve as a low-cost tool, favoring prevention and early diagnosis, situations where morbidity and mortality are smaller, thus reducing health costs and assistance and preserving lives.展开更多
Prevalent diabetes is at high risk for cardiovascular diseases and has a high familial inheritance. However, little is known whether a non-diabetic subject with a family history of diabetes is at high risk for vascula...Prevalent diabetes is at high risk for cardiovascular diseases and has a high familial inheritance. However, little is known whether a non-diabetic subject with a family history of diabetes is at high risk for vascular damage or not. The purpose of this study was to evaluate the association between a family history of diabetes and arterial stiffness in adult non-diabetic Japanese population. We analyzed eligible 787 non-diabetic subjects (502 men and 285 women) aged 35-69 years who enrolled in the baseline survey of a cohort study in Tokushima Prefecture, Japan and who underwent a brachial-ankle pulse wave velocity (ba-PWV) measurement. Information on individual life-style characteristics including medical history and treatment for diseases and a first-degree family history of diabetes was obtained through a structured self-administered questionnaire. Analysis of covariance and logistic regression analyses were used to evaluate the association between a family history of diabetes and ba-PWV. We found no differences in age-and-systolic blood pressure-adjusted and multivariate-adjusted means of ba-PWVs between subjects of both sexes with and without a family history of diabetes. Logistic regression analyses including both sexes also revealed that subjects with a family history of diabetes showed no differences in age-and-systolic blood pressure-adjusted and multivariate-adjusted odds ratios for high ba-PWV compared to those without that trait. Our results suggest that a family history of diabetes itself is not associated with arterial stiffness in adult non-diabetic Japanese population.展开更多
We can find many cases in the scientific literature,where the leader(CEO)of a political or business organisation is being declared a"hero"or"damned"in the"court of history"upon his/her ac...We can find many cases in the scientific literature,where the leader(CEO)of a political or business organisation is being declared a"hero"or"damned"in the"court of history"upon his/her action(s).The case study presented here analyses a politician who was active in the first half of the 20th century,examining if his activity was ended with success or failure for the state he led.The analysis focuses only on the decisions taken in the two world wars that were relevant for the'survival'of the organization he led.I examine his decisions that were made in a non'business-as-usual'situation from the view if they helped or threatened the survival of the state he led in the short and long term.In a particular situation,the decision has to be taken by the leader there and then,and it may not be possible to change or improve the decision later on.展开更多
文摘Social studies combines social sciences and the humanities, and has the purpose of raising effective citizens. There are many different areas integrated in social studies including history, geography, philosophy and psychology. Social studies is the presentation of the information produced by these areas in framework of a curriculum. Social studies curriculum is a multi-dimensional program. One of the objectives of this program is to raise individuals who know about their past and shape their future with the help of the lessons they learn from history. In this context, the aim of this study is to determine sixth grade students＇ perspective to the history subjects in social studies curriculum, learn the place of history in their lives and see how history subjects are taught in classrooms. This study is limited to the 2014-2015 academic year. The participants were identified using random sampling, a probability-based sampling method. This is a qualitative study. The study includes interviews with eight sixth graders, of whom four were female and four were male. The study data were collected in semi-structured interviews. The interviews were recorded and transcribed. The data were analyzed using descriptive analysis. The study found that the students enjoyed learning history, had positive opinions about their history grades and their teachers continued to teach history using traditional methods. They also felt that history contributed to their lives. Based on the data collected, the study makes specific suggestions.
文摘In Chinese language studies, both “The Textual Research on Historical Documents” and “The Comparative Study of Historical Data” are traditional in methodology and they both deserve being treasured, passed on, and further developed. It will certainly do harm to the development of academic research if any of the two methods is given unreasonable priority. The author claims that the best or one of the best methodologies of the historical study of Chinese language is the combination of the two, hence a new interpretation of “The Double-proof Method”. Meanwhile, this essay is also an attempt to put forward “The Law of Quan-ma and Gui-mei” in Chinese language studies, in which the author believes that it is not advisable to either treat Gui-mei as Quan-ma or vice versa in linguistic research. It is crucial for us to respect always the language facts first, which is considered the very soul of linguistics.
基金supported by the National Natural Science Foundation of China(grants:30972531 and 81320108026)a Project of the Priority Academic Program Development of Jiangsu Higher Education Institutions
文摘Objective We aimed to evaluate the combined effect of a family history of cardiovascular disease（CVD） and high serum C‐reactive protein（CRP） on the stroke incidence in an Inner Mongolian population in China. Methods A prospective cohort study was conducted from June 2002 to July 2012, with 2,544 participants aged 20 years and over from Inner Mongolia, China. We categorized participants into four groups based on the family history of CVD and CRP levels. Results We adjusted for age; sex; smoking; drinking; hypertension; body mass index; waist circumference; and blood glucose, triglycerides, low‐density lipoprotein cholesterol, and high‐density lipoprotein cholesterol levels. Compared with the group with no family history of CVD/low CRP levels, the group with family history of CVD/high CRP levels had a hazard ratio（HR） of 1.78 [95% confidence interval（CI）, 1.03‐3.07; P = 0.039] of stroke, and an HR of 2.14（95% CI, 1.09‐4.20; P = 0.027） of ischemic stroke. The HRs of hemorrhagic stroke for the other three groups were not statistically significant（all P 〉 0.05）. Conclusion Participants with both a family history of CVD and high CRP levels had the highest stroke incidence, suggesting that high CRP levels may increase stroke risk, especially of ischemic stroke, among individuals with a family history of CVD.
基金a staged research result of “Silk Road-themed Historical Geographic Information System Construction”(14ZDB031)a major program funded by National Social Sciences Fund
文摘Historical geographic information system construction echoes the call of academic development in the information era and demonstrates the in-depth advancement of history studies. In recent years, an increasing number of data platforms have been built to facilitate historical information storage, display, management and analysis. In such a context, the geographic information system(GIS) begins to contribute to the study of Chinese history. Its contribution is highlighted in nine areas: historical climate, fluvial landforms, town economies, rural settlements, hydraulic societies, environmental changes, ancient cities, ancient maps and HGIS-enabled research methods. The application of GIS to the study of Chinese history initiates a reform in research methods and at the same time upgrades the philosophy of history studies, facilitating the utilization of a diversity of historical data(documents, ancient maps, remote-sensing images, archaeological information, etc.) for dynamic tracing and multi-factor comprehensive research. At present, restricted by traditional disciplinary boundaries, the construction of HGIS platforms remains slow and insufficient, making it difficult to extensively apply GIS to the study of Chinese history.
文摘Nitric acid or qiangshui强水(“strong liquid,”from lat.aqua fortis)was introduced to China multiple times by European missionaries during the Ming and Qing dynasties.Xu Guangqi徐光啟(1562-1633)was the first Chinese to record related knowledge from his communication with Johann Schreck(1576-1630).Johann Adam Schall von Bell(1591-1666),Joachim Bouvet(1656-1730),and Matteo Ripa(1682-1746)independently described the substance to the Chinese in their writings,explaining production methods together with different applications such as separating and assaying of gold and silver,etching of iron or copperplates,and manufacturing of thermometers.This paper focuses on newly discovered Chinese materials,mainly from the Investigations of the Earth’s Interior(Kunyu gezhi坤輿格致,1640)by Schall von Bell and his Chinese collaborators,but also from the Record of Essentials of Inception and Completion(Kaicheng jiyao開成紀要)by Xu Guangqi.It analyzes different aspects of knowledge transmission processes including the identification of useful knowledge,the purpose of transmission,the sources of European knowledge,and the applied methods of translation and explanation.From these analyses we can better understand the reasons of their failure or success.
文摘The famous female writer Ma Lihua in her well- known book The Red Mountain Ranges in East Tibet described the social status and influence of the Pangda family.She wrote:"The famous Pangda family in Tibetan pre-modern society stands on both
文摘This concise paper,delivered at a conference,addresses a broad topic with the goal of providing a condensed and inevitably subjective perspective.Initially,it outlines the primary characteristics that distinguish coins from other historical sources.Subsequently,it provides a succinct overview of numismatics,categorized into seven phases:1.Pre-1550(coins as reflections of vice and virtue);2.From circa 1550 to circa 1620(coins as testimony of authentic history);3.From circa 1650 to circa 1730(the heyday of the“Republic of Medals”);4.From circa 1730 to circa 1840(the decline of the“Republic of Medals”and the emergence of scientific practices by Viennese Jesuits);5.From circa 1840 to circa 1940(die-studies and art history);6.From circa 1940 to circa 2000(coins as instruments of exchange);7.Since 2000(cultural shift and digital humanities).
基金supported by grants from the Zhejiang Science and Technology Department Project(2023C04004)Zhejiang Science and Technology Major Program on Agricultural New Variety Breeding(2021C02068-6)+2 种基金Department of Science Technology of Huzhou City(2023GZ33)Zhejiang Team Technology Ambassador Project(Tongxiang)the National Natural Science Foundation of China(32172724).
文摘Hu sheep is an indigenous breed from the Taihu Lake Plain in China,known for its high fertility.Although Hu sheep belong to the Mongolian group,their demographic history and genetic architecture remain inconclusive.Here,we analyze 697 sheep genomes from representatives of Mongolian sheep breeds.Our study suggests that the ancestral Hu sheep first separated from the Mongolian group approximately 3000 years ago.As Hu sheep migrated from the north and flourished in the Taihu Lake Plain around 1000 years ago,they developed a unique genetic foundation and phenotypic characteristics,which are evident in the genomic footprints of selective sweeps and structural variation landscape.Genes associated with reproductive traits(BMPR1B and TDRD10)and horn phenotype(RXFP2)exhibit notable selective sweeps in the genome of Hu sheep.A genome-wide association analysis reveals that structural variations at LOC101110773,MAST2,and ZNF385B may significantly impact polledness,teat number,and early growth in Hu sheep,respectively.Our study offers insights into the evolutionary history of Hu sheep and may serve as a valuable genetic resource to enhance the understanding of complex traits in Hu sheep.
基金supported by a grant from the Ministry of Health Key Lab Foundation (KLF2009011)
文摘BACKGROUND: The etiology of insulinoma is poorly understood. Few studies investigated the possible roles of environmental factors and lifestyle in the pathogenesis of insulinoma. The aim of this study is to identify risk factors associated with occurrence of insulinoma in the Chinese population. METHODS: This study consisted of 196 patients with insulinoma and 233 controls. Demographic information of the patients and controls and risk factors of the disease were analyzed. Univariate and unconditional multivariable logistic regression analyses were made to estimate odds ratios (ORs) and possible risk factors. RESULTS: Approximately 68.88% (135/196) of the patients were from rural areas in contrast to 10.30% (24/233) of the controls (P【0.0001). This difference was confirmed by the multivariate analysis (OR=4.950; 95% CI: 2.928-8.370). Family history of pancreatic endocrine tumor (OR=16.754; 95% CI: 2.125-132.057) and other cancers (OR=2.360; 95% CI: 1.052-5.291) was also related to a high-risk population of insulinoma. CONCLUSION: Rural residents or people who have a family history of pancreatic endocrine tumor and other cancers are a high-risk population of insulinoma.
文摘Background: Gastric cancer is the third most incident malignancy and the fifth leading cause of death in the world. In Brazil, it is the fourth most common tumour in men and the fifth in women. Familial aggregation of this tumour is being studied and discussed by experts. Aim: Determine the frequency of family history of cancer in patients with gastric cancer, suggesting familial aggregation or increased risk for hereditary cancer syndromes. Methods: This is a retrospective cross-sectional study carried out from January 2011 to March 2015 at the Department of Abdominal and Pelvic Surgery of the Brazilian National Cancer Institute (INCA). Data were collected from electronic medical records and analyzed using SPSS Statistics? version 20. Results: 873 patients with gastric adenocarcinoma were analyzed. A family history of cancer was reported by 451 patients (51.6%), which reported cancer in 878 relatives, of which 110 (12.6%), reported having more than three relatives with any type of cancer. The most prevalent malignancies among these relatives were gastric cancer (21.3%) and breast cancer (9.5%). Conclusion: Most of the patients had cancer family history, being gastric cancer the most common. The high percentage of cancer family history confirms the importance of collecting this information, whose lack reflects professional negligence, as family history study can serve as a low-cost tool, favoring prevention and early diagnosis, situations where morbidity and mortality are smaller, thus reducing health costs and assistance and preserving lives.
文摘Prevalent diabetes is at high risk for cardiovascular diseases and has a high familial inheritance. However, little is known whether a non-diabetic subject with a family history of diabetes is at high risk for vascular damage or not. The purpose of this study was to evaluate the association between a family history of diabetes and arterial stiffness in adult non-diabetic Japanese population. We analyzed eligible 787 non-diabetic subjects (502 men and 285 women) aged 35-69 years who enrolled in the baseline survey of a cohort study in Tokushima Prefecture, Japan and who underwent a brachial-ankle pulse wave velocity (ba-PWV) measurement. Information on individual life-style characteristics including medical history and treatment for diseases and a first-degree family history of diabetes was obtained through a structured self-administered questionnaire. Analysis of covariance and logistic regression analyses were used to evaluate the association between a family history of diabetes and ba-PWV. We found no differences in age-and-systolic blood pressure-adjusted and multivariate-adjusted means of ba-PWVs between subjects of both sexes with and without a family history of diabetes. Logistic regression analyses including both sexes also revealed that subjects with a family history of diabetes showed no differences in age-and-systolic blood pressure-adjusted and multivariate-adjusted odds ratios for high ba-PWV compared to those without that trait. Our results suggest that a family history of diabetes itself is not associated with arterial stiffness in adult non-diabetic Japanese population.
文摘We can find many cases in the scientific literature,where the leader(CEO)of a political or business organisation is being declared a"hero"or"damned"in the"court of history"upon his/her action(s).The case study presented here analyses a politician who was active in the first half of the 20th century,examining if his activity was ended with success or failure for the state he led.The analysis focuses only on the decisions taken in the two world wars that were relevant for the'survival'of the organization he led.I examine his decisions that were made in a non'business-as-usual'situation from the view if they helped or threatened the survival of the state he led in the short and long term.In a particular situation,the decision has to be taken by the leader there and then,and it may not be possible to change or improve the decision later on.
