Predicting consumer satisfaction from CD players

This paper explores the relationship between expectations and product satisfaction evaluations in a high‐involvement product category. While doing so, the paper attempts to develop a regression model to predict the overall level of consumer satisfaction derived from CD players, using a number of explanatory variables within an ordinary least squares framework. This regression model links overall satisfaction to confidence in other people's opinions, expectations of product quality, experience with product quality, replacement rate and the importance of price. The model predicts fairly well for cross‐sectional data, with an adjusted R² of 57 per cent, and appears to be robust. Finally, the implications of these results for marketers are discussed. Copyright © 2002 Henry Stewart Publications.     

多发性硬化患者外周血CD4＋CD25＋T细胞与可溶性细胞因子表达的相关性研究

CD4＋CD25＋T细胞和可溶性细胞因子在多发性硬化（multiple sclerosis,MS）发生和发展中起重要作用。本文通过探讨MS患者外周血CD4＋CD25＋T细胞数量及可溶性细胞因子与MS病情的关系,为进一步研究MS的发病机制和采取有效治疗措施奠定了基础。     

组织微阵列方法检测CD105、VEGF—C在肝癌组织中的表达

新生血管生成不仅为肿瘤组织提供营养支持,而且是肿瘤细胞进入循环系统的途径。CD105仅在激活的上皮细胞表达;VEGF-C为重要的血管生成因子之一,但二者与肝癌转移是否存在关联尚不明晰。探讨CD105及VEGF-C表达与肝癌肝内转移的关联。构建承栽37例肝癌及癌旁组织的组织微阵列,免疫组织化学方法检测CD105及VEGF-C的表达。存在肝内转移的肝癌组织MVD-CD105均值为28.4±19.4,而无肝内转移的肝癌组织MVD-CD105均值为5.4±5.2,差异显著(P＜0.01);VEGF-C在存在肝内转移的肝癌组织表达率为46.15%(6/14),无肝内转移的肝癌组织中表达率为41.67%(10/24),二者无显著差异。MVD-CD105分值与肝癌肝内转移密切相关;血管生成可能在肝癌肝内转移过程中起重要作用。     

慢性乙型肝炎T细胞功能与HBV前C区变异的研究

通过研究慢性HBV感染者前C区变异及T细胞免疫功能与疾病的相关性,评估前C（preC）区变异及T细胞免疫功能对于慢性乙型肝炎（chronichepatitisB,CHB）预后的影响。分别采用实时荧光法、突变特异PCRmsPCR法及微粒酶免疫分析法对150例HBV-DNA阳性的CHB及50例健康体检者进行血清HBV-DN...     

Strategic and cognitive differentiation–integration effort in a study of 76 countries

The phenomena of strategic and cognitive differentiation and integration (SD–IE and CD–IE) amongst life history indicators and cognitive abilities as a function of level of latent life history speed have been robustly demonstrated in individual differences samples. Here we examine a cross-national sample (N = 76 nations) with respect to ten aggregate life history indicators (birth rate, infant mortality, skin reflectance, prevalence of STDs, overall life satisfaction, life expectancy, national IQ, cranial capacity, savings rate and crime rate), all of which share substantive common variance stemming from a K-Super factor which accounts for 66.6% of the variance amongst these indicators. All indicators became significantly less strongly correlated with the super factor as the level of K increased indicating the presence of robust SD–IE effects. A ‘cognitive’ factor comprised of the national IQ and cranial capacity variables also exhibited differentiation as a function of increasing levels of K, suggesting the presence of CD–IE also. Consistently with the findings of individual differences studies investigating SD–IE, the degree to which the indicators loaded on the K super-factor positively mediated their sensitivity to the effect.     

Self regard and concealment of homosexuality as predictors of CD4+ cell count over time among hiv seropositive gay men

Living with HIV can challenge core features of a person’s sense of identity and ultimately lead to a diminished sense of self regard. Self-regard has been defined as the extent to which a person experiences an integrated sense of identity. Gay men with HIV may also face struggles related to their identity in deciding whether to disclose or conceal their homosexuality. This study examined whether concealment of homosexuality and a person’s sense of self regard would be associated with CD4+ cell count over time among HIV seropositive gay men. 53 HIV seropositive gay men completed questionnaires at one time point. CD4+ cell counts were measured at the time of questionnaire completion and 24 months later. Greater self regard at baseline was associated with higher CD4+ counts at 24 months. The association between baseline self regard and CD4+ count at 24 months was strongest among persons with less concealment of homosexuality.     

Apodemus sylvaticus (LOXT) is a suitable mouse strain for testing spatial memory retention in the Morris water maze

Information on the difference in cognitive function between laboratory and wild-caught mice is anecdotal and this question has not been systematically studied. Moreover, studying a wild-caught mouse strain per se may add information to the repertoire of mouse strains available. We aimed to study spatial memory in a wild mouse strain (Apodemus sylvaticus, AS) as compared to two individual laboratory mouse strains.Male AS (n = 20), CD1 (n = 19) and C57BL/6J mice (n = 19), 12–14 weeks old, were used in the experiments. The Morris water maze (MWM) was used for determination of spatial memory and time spent in the target quadrant at time points 5 (D5) and 12 days (D12) was evaluated. During the acquisition phase latency to reach the platform and path length to reach the platform was evaluated.Following four training days on day 5 (D5), time spent in the target quadrant was highest in AS > CD1 > C57BL/6J (P < 0.006). On day 12 (D12), time spent in the target quadrant was significantly higher in AS than in both other strains (P < 0.001).All animals learned the task and during the acquisition phase, latency to reach the platform as well as path length decreased significantly in AS.It is concluded that the AS is the most suitable strain for the evaluation of spatial memory in the MWM and is presenting with memory retention superior to laboratory mouse strains CD1 and C57BL/6J.     

Cross-sectional and Longitudinal associations in coping strategies and physical health outcomes among HIV-Positive youth

This study assessed whether coping styles had an influence on physical health outcomes either concurrently or longitudinally in a sample of HIV-positive youth. Coping styles were characterized as positive, passive, depressive withdrawal, and escapist. A cross-sectional latent variable analysis (N = 279) assessed associations among environmental stress, self-esteem, social support, coping styles, AIDS symptoms, and CD4 count. A more restricted longitudinal analysis (N = 174) tested associations among earlier environmental stress, self-esteem, coping styles, and AIDS symptoms at follow-up. CD4 count was not associated with coping styles in the cross-sectional analysis. Concurrent AIDS symptoms were significantly predicted by depressive withdrawal and environmental stress. A passive coping style modestly predicted more AIDS symptoms longitudinally. Correlates of perceived health and well-being of persons with HIV/AIDS are important to investigate in addition to more objective measures such as CD4 count that may not be amenable to change through coping style interventions alone.     

Impulsive Responses In Children with Conduct Disorder and Borderline Intellectual Functioning

The study is designed to investigate response inhibition in children with conduct disorder and borderline intellectual functioning. To this end, children are compared to a normal peer control group using the Alertness test. The test has two conditions. In one condition, children are instructed to push a response button after a visual “go” signal is presented on the screen. In a second condition the “go” signal is preceded by an auditory signal, telling the child that a target stimulus will occur soon. Compared to the control group, the group carrying the dual diagnosis made many preliminary responses (responses before the presentation of the “go” signal), especially in the condition with an auditory signal. This impulsive response style was controlled for attention deficit/hyperactivity disorder characteristics of the children.