Transport on flexible Rydberg aggregates using circular states

Assemblies of interacting Rydberg atoms show promise for the quantum simulation of transport phenomena, quantum chemistry and condensed matter systems. Such schemes are typically limited by the finite lifetime of Rydberg states. Circular Rydberg states have the longest lifetimes among Rydberg states but lack the energetic isolation in the spectrum characteristic of low angular momentum states. The latter is required to obtain simple transport models with few electronic states per atom. Simple models can however even be realized with circular states, by exploiting dipole-dipole selection rules or external fields. We show here that this approach can be particularly fruitful for scenarios where quantum transport is coupled to atomic motion, in adiabatic excitation transport or quantum simulations of electron-phonon coupling in light harvesting. Additionally, we explore practical limitations of flexible Rydberg aggregates with circular states and to which extent interactions among circular Rydberg atoms can be described using classical models.Comment: 9 Pages, 5 Figure

Author Productivity and Collaboration Among Academic Scientists in Modibbo Adama University of Technology, Yola

A lot of researches on author productivity and collaboration were carried out in different fields. Many of the researches established that productive, active and prolific authors are also highly collaborative. This study determines whether the most productive author among the academic scientists in Modibbo Adama University of technology, Yola, for the period 2001 – 2010 is also the most collaborative. The study used the weighted-average method to determine the extent of author collaboration. Spearman rank correlation coefficient was used to determine the correlation between productivity and collaboration among the subjects of the study. The study reveals that thereis high degree of collaboration among the scientists and that the productive authors correlated positively with the collaborative authors

The Use of Internet by Academic Scientists in Modibbo Adama University of Technology, Yola

The internet is an important tool for communication and retrieval of information. This study examined the use of internet in communication and retrieval of information by scientists in Modibbo Adama University of Technology, Yola.The survey method was used for the study. A total of 95 scientists in the school of pure and applied sciences (SPASS) constituted the population of the study. Result of the study shows that majority (60.45%0 of the scientists use the internet occasionally to access information. They do not take advantage of the vast and rich knowledgepreserved and communicated through e-books, e-thesis, and digital archives. Finally, majority of the scientists (60.49%) use the internet to get support or sponsorship for studies rather than for research. Some of therecommendations of the study include: The necessary requirement that universities should have good Information Technology (IT) infrastructure such as the internet in order to create easy information access and retrieval as well as to disseminate research findings for wider use; To overcome erratic retrieval problems and for fast access of wide and current range of resources so as to achieve maximum user satisfaction with economy of time, use of e-books, ethesis and digital archives becomes the best option; The scientists also need to enhance their skills of internet surfing by way of regular training on the use and advantages of the internet

Information and Communication Network Among Natural Scientists In Ahmadu Bello University, Zaria.

This study tries to find out the extent of information and communication networks among natural scientists in Ahmadu Bello University, Zaria. Their ways of information sharing, and the extent of their participation in information networking were investigated. Using two (2) research questions, data was collected from 299 pure and applied scientists in five (5) faculties in the university. The data was analysed by descriptive statistics. The findings showed that the natural scientists in the university significantly share information among themselves. Suggestions were made to facilitate the development information networking among the Nigerian scientists. Samaru Journal of Information Studies Vol. 7 (1) 2007: pp. 13-1

Vertical annular gas–liquid two-phase flow in large diameter pipes

Gas–liquid annular two phase flow in pipes is important in the oil and gas, nuclear and the process industries. It has been identified as one of the most frequently encountered flow regimes and many models (empirical and theoretical) for the film flow and droplet behaviour for example have been developed since the 1950s. However, the behaviour in large pipes (those with diameter greater than 100 mm) has not been fully explored. As a result, the two- phase flow characteristics, data, and models specifically for such pipes are scarce or non-existent such that those from smaller pipes are extrapolated for use in design and operation. Many authors have cautioned against this approach since multiphase pipe flow behaviour is different between small and large pipes. For instance the typical slug flows seem not to occur in vertical upwards flows when the pipe diameter exceeds 100 mm. It is therefore imperative that theoretical models and empirical correlations for such large diameter pipes are specifically developed. ...[cont.

Nigeria’s Federal Legislators’ Bloated Remuneration and Implications for Public Policy and Good Governance

This paper is a descriptive type. The study employs secondary data that was sourced from journal articles, online materials, government documentaries, and dailies to examine the huge salaries and other allowances “earned” by members of the National Assembly of the Federal Republic of Nigeria. The study is against the background of the controversies that enormous salaries and allowances of legislators have generated in the country since the return of democratic rule in 29th May; 1999. Despite the biting economic situation, poverty, unemployment and collapsed public infrastructures, members of the National Assembly continue to receive controversial salaries and allowances, and still often clamor for more. This study examines this issue and its implications for the country. The study concludes by proffering policy options which include but are not limited to giving serious thought to the need for part-time legislators who would only be entitled to sitting allowance, a significant reduction in the payments of all political office holders, and reduction of the two chambers of the National Assembly in Nigeria to one house-unicameral legislature, or at worst; reduction in the number of national lawmakers to maintain a cost-effective legislature.

Partisan Politics, Political Culture and Restructuring Drive for Good Governance in Nigeria

This paper discusses a number of partisan political attitudes among Nigerians such as party switching; especially by incumbent political office holders to a ruling party, taking kickbacks for party funding, use of money and material things to lure electorate, recruitment of party-militia to foment violence, party control by incumbent political office holders, and followers docile attitude to leadership service, and examines how they have constituted wrong political culture. The study also discusses the effects of such attitudes on good governance in Nigeria, and offers policy options for restructuring the behaviours. The study relied on secondary data and was content analyzed. The study argues for a need to restructure the wrong partisan behaviours among political stakeholders because they have made good governance elusive, incumbent political office holders more powerful and corrupt, partisan politics patron-client inclined and breed violence during electioneering periods. A number of restructuring policy-agenda were offered to move the country forward and put governance in enviable position

2019 General Elections in Nigeria and the New Dimension of Youth Involvement in Osun State

The study examined the extent to which the Nigerian youths were able to participate in the 2019 general elections compared to the previous ones from 1999 It also examined the fate of the Nigerian youths with the passage of the Not Too Young to Rule NTYTR Act The study also assessed the effect of the NTYTR Act on the 2019 general elections in Nigeria The study adopted quantitative method of research with the use of a self-structured questionnaire that was administered on 200 youth respondents between the ages of 18 and 35 years in Osun State Data were analyzed quantitatively and presented in bar charts tables and chi square statistics The study found that the Nigerian youths did not participate fully in previous general elections compared to 2019 after the passage of the NTYTR Act in the country The study showed that the NTYTR Act made the outcomes of the 2019 general elections to be better than previous elections because youths are now more encouraged to take part in the electoral contest unlike what it used to be The study concluded that NTYTR Act significant influenced the participation of youths in the 2019 general election and that more youths are likely to be more involved in future elections in the country if the trend is sustaine