This paper focus on the chaotic properties of minimal subshift of shift operators. It is proved that the minimal subshift of shift operators is uniformly distributional chaotic, distributional chaotic in a sequence, d...This paper focus on the chaotic properties of minimal subshift of shift operators. It is proved that the minimal subshift of shift operators is uniformly distributional chaotic, distributional chaotic in a sequence, distributional chaotic of type k ( k∈{ 1,2,2 1 2 ,3 } ), and ( 0,1 ) -distribution.展开更多
In this paper, we will concern the existence, asymptotic behaviors and stability of forced pulsating waves for a Lotka-Volterra cooperative system with nonlocal effects under shifting habitats. By using the alternativ...In this paper, we will concern the existence, asymptotic behaviors and stability of forced pulsating waves for a Lotka-Volterra cooperative system with nonlocal effects under shifting habitats. By using the alternatively-coupling upper-lower solution method, we establish the existence of forced pulsating waves, as long as the shifting speed falls in a finite interval where the endpoints are obtained from KPP-Fisher speeds. The asymptotic behaviors of the forced pulsating waves are derived. Finally, with proper initial, the stability of the forced pulsating waves is studied by the squeezing technique based on the comparison principle.展开更多
Purpose: To investigate the relationship between stress, fatigue and sleep quality among shift work nurses in Japan. Design: A descriptive correlation design using self-administered surveys. Methods: Questionnaires on...Purpose: To investigate the relationship between stress, fatigue and sleep quality among shift work nurses in Japan. Design: A descriptive correlation design using self-administered surveys. Methods: Questionnaires on stress, fatigue and sleep quality (the Pittsburgh Sleep Quality Index;PSQI-J) among shift work nurses were distributed to 653 nurses in Japan from January 2015 to February 2015. Results: Participants who reported higher levels of fatigue reported higher levels of stress (r = 0.774, p = 0.000), lower levels of sleep satisfaction (r = −0.411, p = 0.000) and overall lower levels of health (r = −0.323, p = 0.000).PSQI scores were also significantly correlated with reported levels of stress (r = 0.294, p = 0.000), fatigue (r = 0.291, p = 0.000) and levels of health (r = −0.370, p = 0.000). Nurses who have stress-relieving recourses were younger (t = −2.842, p = 0.005), reported higher levels of overall health (t = 2.727, p = 0.007), had higher levels of sleep quality measured by the PSQI (t = −2.560, p = 0.011), and required less time to fall asleep (t = −3.207, p = 0.001). Conclusions: This study showed an association between stress and sleep satisfaction among shift work nurses in Japan. In addition, nurses that engage in activities to manage stress might achieve higher levels of health and high sleep quality.展开更多
Elections play a crucial role in a very democratic society as they provide a means of electing their preferred candidates or leaders. It serves as a mechanism for expressing the collective will of the people and ensur...Elections play a crucial role in a very democratic society as they provide a means of electing their preferred candidates or leaders. It serves as a mechanism for expressing the collective will of the people and ensuring a peaceful transfer of power. This study therefore seeks to determine the difference between the proportion of votes garnered by the two main political parties during 2016 and 2020 elections. The study employed descriptive research design with two population proportion tests and found that Ghanaian voters in 2020 shifted towards the National Democratic Congress (NDC) at 95% confidence level. Moreover, in 2016, the New Patriotic Party (NPP) defeated the National Democratic Congress (NDC) with close to a million votes. Thus, in 2020 election, the results clearly indicate a shrank in the margin of votes between the two main political parties in Ghana. The results further revealed that during the 2016 and 2020 elections, Ghanaians changed their pattern of voting towards these two political parties. Additionally, the New Patriotic Party lost more votes as compared to what they garnered in the year 2016 at 95% and 99.9% confidence level. Also, the gap of votes between the two main political parties shrank at 95% and 99.9% confidence level. Based on the findings of the study, it was further concluded that political parties should not take the voters for granted and it should be known to political leaders that the voters have now changed their mindset and have shifted from the previously tribalistic line of voting. Therefore, for a political party to remain in power, it must promote good public relations with the masses and good campaign messages or policies that are beneficial to the electorates.展开更多
文摘This paper focus on the chaotic properties of minimal subshift of shift operators. It is proved that the minimal subshift of shift operators is uniformly distributional chaotic, distributional chaotic in a sequence, distributional chaotic of type k ( k∈{ 1,2,2 1 2 ,3 } ), and ( 0,1 ) -distribution.
文摘In this paper, we will concern the existence, asymptotic behaviors and stability of forced pulsating waves for a Lotka-Volterra cooperative system with nonlocal effects under shifting habitats. By using the alternatively-coupling upper-lower solution method, we establish the existence of forced pulsating waves, as long as the shifting speed falls in a finite interval where the endpoints are obtained from KPP-Fisher speeds. The asymptotic behaviors of the forced pulsating waves are derived. Finally, with proper initial, the stability of the forced pulsating waves is studied by the squeezing technique based on the comparison principle.
文摘Purpose: To investigate the relationship between stress, fatigue and sleep quality among shift work nurses in Japan. Design: A descriptive correlation design using self-administered surveys. Methods: Questionnaires on stress, fatigue and sleep quality (the Pittsburgh Sleep Quality Index;PSQI-J) among shift work nurses were distributed to 653 nurses in Japan from January 2015 to February 2015. Results: Participants who reported higher levels of fatigue reported higher levels of stress (r = 0.774, p = 0.000), lower levels of sleep satisfaction (r = −0.411, p = 0.000) and overall lower levels of health (r = −0.323, p = 0.000).PSQI scores were also significantly correlated with reported levels of stress (r = 0.294, p = 0.000), fatigue (r = 0.291, p = 0.000) and levels of health (r = −0.370, p = 0.000). Nurses who have stress-relieving recourses were younger (t = −2.842, p = 0.005), reported higher levels of overall health (t = 2.727, p = 0.007), had higher levels of sleep quality measured by the PSQI (t = −2.560, p = 0.011), and required less time to fall asleep (t = −3.207, p = 0.001). Conclusions: This study showed an association between stress and sleep satisfaction among shift work nurses in Japan. In addition, nurses that engage in activities to manage stress might achieve higher levels of health and high sleep quality.
文摘Elections play a crucial role in a very democratic society as they provide a means of electing their preferred candidates or leaders. It serves as a mechanism for expressing the collective will of the people and ensuring a peaceful transfer of power. This study therefore seeks to determine the difference between the proportion of votes garnered by the two main political parties during 2016 and 2020 elections. The study employed descriptive research design with two population proportion tests and found that Ghanaian voters in 2020 shifted towards the National Democratic Congress (NDC) at 95% confidence level. Moreover, in 2016, the New Patriotic Party (NPP) defeated the National Democratic Congress (NDC) with close to a million votes. Thus, in 2020 election, the results clearly indicate a shrank in the margin of votes between the two main political parties in Ghana. The results further revealed that during the 2016 and 2020 elections, Ghanaians changed their pattern of voting towards these two political parties. Additionally, the New Patriotic Party lost more votes as compared to what they garnered in the year 2016 at 95% and 99.9% confidence level. Also, the gap of votes between the two main political parties shrank at 95% and 99.9% confidence level. Based on the findings of the study, it was further concluded that political parties should not take the voters for granted and it should be known to political leaders that the voters have now changed their mindset and have shifted from the previously tribalistic line of voting. Therefore, for a political party to remain in power, it must promote good public relations with the masses and good campaign messages or policies that are beneficial to the electorates.
