Kent State University

About: Kent State University is a education organization based out in Kent, Ohio, United States. It is known for research contribution in the topics: Liquid crystal & Population. The organization has 10897 authors who have published 24607 publications receiving 720309 citations. The organization is also known as: Kent State & KSU.

Synthesis of self-organizing mesogenic materials containing a sulfur-based five-membered heterocyclic core.

Abstract: The majority of low molar mass calamitic mesogenic systems in the literature contain linear cores based on the 1,4-disubstituted phenyl ring. Heterocyclic cores such as thiophene impart unique physical properties as their slightly bent structure leads to features including a reduced packing ability (generally giving rise to lower melting points than their phenyl counterparts), a medium to strong lateral dipole, high anisotropy of the polarizability, low viscosity etc. This critical review describes the most recent synthetic methodology that has been used to prepare thiophene, 1,3-thiazole, and 1,3,4-thiadiazole-based mesogenic materials. (154 references)

Azimuthal Anisotropy and Correlations in the Hard Scattering Regime at RHIC

Abstract: Azimuthal anisotropy (v(2)) and two-particle angular correlations of high p(T) charged hadrons have been measured in Au+Au collisions at roots(NN) = 130 GeV for transverse momenta up to 6 GeV/c, where hard processes are expected to contribute significantly. The two-particle angular correlations exhibit elliptic flow and a structure suggestive of fragmentation of high p(T) partons. The monotonic rise of v(2)(p(T)) for p(T) 3 GeV/c, a saturation of v(2) is observed which persists up to p(T) = 6 GeV/c.

Online discussions: a survey of advantages and disadvantages compared to face-to-face discussions

Abstract: Class listervs are widely used at the university level to supplement inclass discussion. What are the inherent advantages and disadvantages in the online discussion experience? How favorably do these online experiences compare to their face-to-face counterparts? Survey data from graduate students involved in online discussions indicates positive reactions to most aspects of the experience, even those elements that clearly differ from the face-to-face experience. However, when given a choice, students still indicated a preference for face-to-face experiences. Online discussions were perceived as a valuable addition to in-class discussions, rather than as an acceptable substitution for them. In a growing number of college classes across the country, instructors are using electronic communications to augment in-class discussion with an ongoing, online dialogue between students about class-related topics. A number of articles have reported on the use of e-mail and listservs as a supplement to the teaching of a college course (Doring, 1996; Gamas & Nordquist, 1997; Hansen & Gladfelter, 1996). In other cases, the electronic discussions have been part of a distance education effort and constituted the primary means of communication between instructors and students (Lewis, Treves, & Shaindlin, 1997; Muffoletto, 1997; Talley, 1997). Some authors have proposed specific models for effectively designing and conducting online discussion experiences (Martin & Taylor, 1997; Schrum, 1995). Most of these articles have provided anecdotal descriptions of instructor experiences with using listservs in their classes. Only a few articles have reported actual research studies wherein data was collected to gauge student reactions to online discussions. The findings of these types of studies generally have shown that students have favorable reactions to their experiences with electronic discussions. Hesser and Kontos (1995) conducted a survey of 25 students involved in the distance education-based doctoral program at Nova Southeastern University. Given a choice of alternatives, respondents found electronic mail to be their most popular communication choice. Zhu (1996) documented successful patterns of knowledge construction stemming from electronic discussion, held as part of college coursework taught at a distance. Powers and Mitchell (1997) conducted a qualitative study of an Internet-based graduate course. One of their conclusions was that online communications enhanced levels of rapport between stu dents. This article describes the findings of a study that collected survey data from college students who discussed a given set of topics, both online and face-to-face, over the course a semester. This study was designed mainly to examine specific differences between an online discussion and its face-to-face counterpart. What are the critical differences between each mode of discourse? What are the advantages and disadvantages associated with each of the two types of discussion? How did subjects feel about their online discussion experiences and which type of discussion did they prefer? Were there specific aspects of the online experience which were particularly problematic or especially successful? The Development of an Online Discussion Survey The survey used in this study was developed by the author, based upon his experiences in conducting a listserv discussion in a college class. The survey was created with the advice from this class of graduate students in an IT program. The issues that arose during that experience with an electronic discussion were discussed at length during several class sessions. Interesting, relevant comparisons were made between the electronic discussions that took place over the course of each week and the face-to-face discussion that took place in the classroom on the same topic. The group explored the advantages and disadvantages of each type of experience. …

Ultrathin Titanate Nanosheets/Graphene Films Derived from Confined Transformation for Excellent Na/K Ion Storage.

Abstract: Confined transformation of assembled two-dimensional MXene (titanium carbide) and reduced graphene oxide (rGO) nanosheets was employed to prepare the free-standing films of the integrated ultrathin sodium titanate (NTO)/potassium titanate (KTO) nanosheets sandwiched between graphene layers. The ultrathin Ti-based nanosheets reduce the diffusion distance while rGO layers enhance conductivity. Incorporation of graphene into the titanate films produced efficient binder-free anodes for ion storage. The resulting flexible NTO/rGO and KTO/rGO electrodes exhibited excellent rate performances and long cycling stability characterized by reversible capacities of 72 mA h g-1 at 5 A g-1 after 10000 cycles and 75 mA h g-1 after 700 cycles at 2 A g-1 for sodium and potassium ion batteries, respectively. These results demonstrate the superiority of the unique sandwich-type electrodes.

Interim Study of Procedures for Investigating the Effect of Light on Impression and Behavior

Abstract: (1973). Interim Study of Procedures for Investigating the Effect of Light on Impression and Behavior. Journal of the Illuminating Engineering Society: Vol. 3, No. 1, pp. 87-94.