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This study is part of a collaborative project examining the quality of life in Confucian societies in Asia. Our major findings
suggest that, when our sixteen specific life domains are grouped into three life spheres, namely, material, post-material,
and public, the Japanese people tend to be most satisfied with the post-material sphere of life and least satisfied with the
public sphere of life such as the condition of environment and welfare system. In searching the direct, independent effects
of demographics, lifestyles, value priorities, and domain assessments on the quality of life, none of the public life domain
assessments shows a significant impact on the quality of life, while friendships and spiritual life in the post-material sphere
of life are an important determinant. Equally notable is the finding that neither educational attainment nor household income
contributes significantly to the experience of subjective well-being. Leading a global lifestyle also affects positively the
quality of life. Finally, being married and satisfaction with marital life appear to be powerful and prevalent influence on
the quality of life in Japan.
相似文献
Takashi InoguchiEmail: |
2.
Seiji Tanaka 《Researches on Population Ecology》1994,36(2):137-143
Wing shedding or de-alation is a common phenomenon among crickets. Its significance and effects on other traits were examined
based on the results from experiments using artifical or natural de-alation. Artificial de-alation at adult emergence induces
rapid egg production and flight muscle histolysis in several species examined. However, natural de-alation does not always
shorten the pre-ovipositional period because it does not occur immediately after adult emergence and because oviposition starts
before de-alation. In some cases, naturally de-alated females produce more eggs than to intact females during early adult
life, but peak ovipositing activity occurs before de-alation. Therefore, retention of the hindwings does not suppress high
ovipositing activity in such cases. It appears that de-alation is a result rather than a causal factor in ending migration.
Ovarian development and flight muscle histolysis, which can be stimulated by de-alation, are controlled by the jevenile hormone,
but the mechanism inducing de-alation remains unknown. The possible factors leading to the evolution of de-alation are discussed. 相似文献
3.
Seiji Arakaki Kazunori Yamahira Mutsunori Tokeshi 《Researches on Population Ecology》1999,41(3):235-242
The patterns of sex change and spatial distribution in an intertidal holothurian, Polycheira rufescens (Chiridotidae; Echinodermata), were investigated on a stony beach in Amakusa, western Kyushu. Field caging experiments revealed
that some individuals of P. rufescens underwent a sequential sex change from male to female via hermaphrodite stages and back to male again within a single reproductive
season. The sex ratio of the population gradually changed from male dominance at first to equal proportions of males and females
as the reproductive season progressed. Toward the end of the reproductive season, immature or spent individuals increased
in proportion. Stone size appeared to be an important factor affecting the occurrence of P. rufescens individuals on a stony beach. Analysis of spatial distribution by means of Morisita's index of dispersion and nearest neighbor
distances indicated that (i) males showed a slightly stronger tendency to aggregate than females, while females had a tendency
toward uniform distribution; (ii) females tended to attract males, as shown by relatively short female-to-male distances;
and (iii) there was a substantial variation in male-to-female distances, such that some males were positioned close to females
while others were not. It may be suggested that spatial distribution of P. rufescens individuals during the reproductive period is partly dictated by the differential needs of individuals of different sexual
states.
Received: January 25, 1999 / Accepted: June 10, 1999 相似文献
4.
Seiji Tanaka Modesto Guardia David L. Denlinger Henk Wolda 《Researches on Population Ecology》1990,32(2):303-317
Summary Intra- and inter-specific comparisons in progeny size and clutch size were used to identify possible selection pressures acting
on three sympatric species of ovoviviporous flesh flies. Both progeny and clutch sizes increased with body weight of the female
parent in all species. There was no evidence for a simple trade-off between the two traits. In one species, the larger the
female adult the smaller the relative biomass of larvae per clutch (total weight of larvae/body weight of female parent).
Female flies produced similar progeny and clutch sizes over successive batches. Variation in progeny size did not influence
either larval survival or duration of larval and pupal development. However, larger first instar larvae tended to form larger
pupae in two of the species. The experiments testing the effect of progeny size on pupal weight under limited food conditions
suggest a selective advantage for larger progeny size. 相似文献
5.
Proportional hazard models and models where the dependent variables follow a linear model are shown to be equivalent if and only if the hazard rate is the product of a non-negative periodic function and a Weibull factor. Estimates based on rank statistics are proposed for the parameters in the proportional hazard model. 相似文献
6.
Introduction: We studied the effect of dutasteride on bone mineral density (BMD) in aging male patients with lower urinary tract symptoms (LUTS) and prostatic enlargement.Methods: We prospectively studied 17 patients with LUTS and prostatic enlargement. Before and 1 year after dutasteride (0.5?mg daily), we assessed International Prostate Symptom Score (IPSS), prostatic volume (PV), serum prostatic-specific antigen (PSA) and testosterone. BMD in the lumbar and femur was measured by DEXA method.Results: Dutasteride significantly reduced PV (from 51?±?24 to 34?±?17?ml, p?0.001) and improved IPSS (from 15.1?±?9.8 to 11.7?±?10.3, p?0.05). Serum PSA was significantly decreased (from 3.2?±?2.6 to 1.0?±?0.8?ng/ml, p?0.001), while serum testosterone “was not changed” significantly. BMD of the lumbar “was not changed” significantly after dutasteride. BMD of the femur was significantly improved (from 0.75?±?0.14 to 0.82?±?0.16?g/cm2, p?0.01). In nine patients whose testosterone was increased after dutasteride, BMD of the lumbar (from 1.18?±?0.26 to 1.22?±?0.25?g/cm2, p?0.05) and femur (from 0.76?±?0.12 to 0.84?±?0.16?g/cm2, p?0.05) was significantly improved.Conclusions: Dutasteride has a potential to improve BMD with elevation of serum testosterone in aging male patients with LUTS and prostatic enlargement. 相似文献
7.
Seiji Nabeya 《统计学通讯:理论与方法》2013,42(3):781-785
In considering an accelerated life test model, Bhattacharyya and Soejoeti (1989) proposed the tampered failure rate (TFR) model, and they gave a necessary and sufficient condition for the model to coincide with the tampered random variable (TRV) model due to DeGroot and Goel (1979). The main purpose of this paper is to show that their claim on the necessity is not true, in a stronger sense than theirs. 相似文献
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