Computer simulation study on the cyclicities ofTribolium population dynamics

Summary Under a set of assumptions, a mathematical model was constructed to investigate the effect of cannibalistic behavior and medium renewal schedule onTribolium population dynamics, and the results of simulation analyses were presented to show how modelling can contribute to a better understanding of experimental study. The analyses of the present model, the main concern of which is the cyclicity inTribolium population. showed that there are two distinct factors which create cyclicity, the cannibalistic behavior inTribolium itself, and the medium renewal schedule. Cannibalismper se does not necessarily cause cyclicity, but the combinations of cannibalistic behavior among various life stages and their relative intensities among them can cause cyclicity and can also determine the period of cycle. External factors also can generate cyclicity, but their interaction with cannibalistic behavior has a more significant effect in modifying the period of cycle. Some discrepancies between the model and experimental results were discussed.     

Major Psychological Factors Affecting Acceptance of Gene-Recombination Technology

The purpose of this study was to verify the validity of a causal model that was made to predict the acceptance of gene-recombination technology. A structural equation model was used as a causal model. First of all, based on preceding studies, the factors of perceived risk, perceived benefit, and trust were set up as important psychological factors determining acceptance of gene-recombination technology in the structural equation model. An additional factor, "sense of bioethics," which I consider to be important for acceptance of biotechnology, was added to the model. Based on previous studies, trust was set up to have an indirect influence on the acceptance of gene-recombination technology through perceived risk and perceived benefit in the model. Participants were 231 undergraduate students in Japan who answered a questionnaire with a 5-point bipolar scale. The results indicated that the proposed model fits the data well, and showed that acceptance of gene-recombination technology is explained largely by four factors, that is, perceived risk, perceived benefit, trust, and sense of bioethics, whether the technology is applied to plants, animals, or human beings. However, the relative importance of the four factors was found to vary depending on whether the gene-recombination technology was applied to plants, animals, or human beings. Specifically, the factor of sense of bioethics is the most important factor in acceptance of plant gene-recombination technology and animal gene-recombination technology, and the factors of trust and perceived risk are the most important factors in acceptance of human being gene-recombination technology.     

Differences in facilities' acceptance of patients under long-term care insurance in Japan

OBJECTIVES: In April 2000, Japan launched a public, long-term care insurance (LTCI) plan for elderly people who need support. This study describes how medical support for the elderly is delivered at LTCI care facilities in Japan now and gaps between system goals and current activity. Recommendations are made for enhancing the implementation of LTCI. METHODS: We mailed questionnaires to all health service facilities for the elderly (HSF) and special nursing homes for the elderly (SNH) located in the Kyushu area of Japan, asking whether they would accept patients with nine specific conditions. RESULTS: We found that HSFs, which are required to employ a full-time doctor and are reimbursed at a higher rate, accept significantly fewer patients with four conditions that need medical support than are accepted by SNHs, which are not required to employ a full-time doctor. DISCUSSION: In this study, we find discrepancies between system goals and current activities at LTCI care facilities. For the Japanese LTCI system to work well in the limitation of medical resources, we must understand how it really works and to reform the system continuously.     

Rate of perceived exertion as a tool to monitor cycling exercise intensity in older adults

The purpose of this study was to determine the efficacy of rate of perceived exertion (RPE) to monitor exercise intensity in older adults. Middle-aged (46.9 +/- 7.0 years, n = 24) and older women (75.5 +/- 3.8 years, n = 29) performed a graded maximal exercise test on a cycle ergometer while RPE, oxygen uptake, heart rate, and blood lactate levels were measured. The Pearson's product moment correlation coefficient between RPE and oxygen uptake for each stage of the graded exercise test was calculated for each participant. The mean coefficient for the older group (r =.954) was similar to that of middle-aged group (r =.963). The autocorrelation coefficient was much lower (r =.411) in the older group than in the middle-aged group (r =.871). Variability in RPE through the graded exercise test was similar between the two groups. In conclusion, RPE was strongly associated with oxygen uptake in the older group. These results indicate that RPE is effective in monitoring exercise intensity in older adults.     

Public Scholarship and Community Engagement in Building Community Food Security: The Case of the University of Kentucky

The current call for public scholarship and community engagement by universities and disciplinary organizations has created opportunities to develop innovative ways to integrate research, instruction, and outreach. This article discusses a collaboration among scholars at the University of Kentucky and alternative agrifood movement organizations that has evolved as they pursue an alternative agrifood system in Kentucky. This collaboration made instructional programs in sociology and the honors world food issues track places in which both students and instructors can examine “problems” of the conventional agrifood system, conduct research, and develop collaborative relationships with community activists. We draw on Burawoy's discussion of public sociology and its interface with professional, critical, and policy sociologies. Supplementing our discussion with literature from social movements and science studies, we demonstrate how this integrated approach can render sociological knowledge and skills useful as critical support of alternative agrifood movements. We argue that the “experiential classroom” is an excellent site for the critical examination within the agrifood movements of oppositional culture. This, in turn, makes possible students' recognition of injustice in the existing agrifood system.     

Development of low-volume,high-intensity,aerobic-type interval training for elderly Japanese men: a feasibility study

Background

The purposes of this study were to identify 1) the feasibility of a novel exercise protocol (elderly Japanese male version of high-intensity interval aerobic training: EJ-HIAT) and 2) its preliminary data (%V?O_2peak, rating of perceived exertion) in comparison with traditional moderate-intensity continuous aerobic training (MICT).

Results

Twenty-one sedentary elderly men, aged 60–69 years, performed two exercise protocols: EJ-HIAT, consisting of 3 sets of 2?3-min cycling at 75?85%V?O_2peak with 1??2-min active rests at 50%V?O_2peak between sets, and MICT, consisting of 40-min cycling at 65%V?O_2peak. The completion rate, defined as the rate of participants who 1) did not demand withdrawal, 2) were not interrupted by the tester, and 3) did not change the workload during either exercise protocol, of EJ-HIAT was similar to that of MICT (EJ-HIAT: 100%, MICT: 95.2%). Maximal perceived exertion ratings assessed by Borg scale were also similar between EJ-HIAT and MICT. However, objectively measured maximal intensity assessed by %V?O_2peak was higher for EJ-HIAT than for MICT (EJ-HIAT: 86.0 ± 5.6%, MICT: 67.1 ± 6.4%).

Conclusion

These results suggested that EJ-HIAT has good feasibility and perceived exertion similar to MICT despite having higher objectively measured intensity than MICT. An intervention aimed as identifying the effects of EJ-HIAT on exercise tolerance should be performed in the future.

Trial registration

UMIN000021185 (February 26, 2016).

     

Empirical Bayes Age–Period–Cohort Analysis of Retrospective Incidence Data

We analyse the (age, time)-specific incidence of diabetes based on retrospective data obtained from a prevalent cohort only including survivors to a particular date. From underlying point processes with intensities corresponding to the (age, time)-specific incidence rates the observed point pattern is assumed to be generated by an independent thinning process with parameters (assumed known) depending on population density and survival probability to the sampling date. A Bayesian procedure is carried out for the optimal adjustment and comparison of isotropic and anisotropic smoothing priors for the intensity functions, as well as for the decomposition of the intensity on the (time, age) Lexis diagram into the three factors of age, period and cohort.     

Records of rat control campaigns in a food market with the largest seafood trading volume worldwide

Urban Ecosystems - Brown rats (Rattus norvegicus) and roof rats (Rattus rattus) are among the most common mammals worldwide. Little is known about the effects of season on rat population size,...