105 research outputs found

    "Maybe it becomes a buddy, but do not call it a robot" - Seamless cooperation between companion robotics and smart homes

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    This paper describes the findings arising from ongoing qualitative usability evaluation studies on mobile companion robotics in smart home environments from two research projects focused on socio-technical innovation to support independent living (CompanionAble and Mobiserv). Key findings are described, and it is stated that the robotic companion, the smart home environment, and external services need to be seamlessly integrated to create a truly supportive and trusted system. The idea of robot personas is introduced, and based on our empirical observations, it is argued that the robot persona, rather than the physical embodiment, is the most important determinant of the degree of users' acceptance in terms of users' perceived trustability and responsiveness of the robot and therefore their sense of enhanced usability and satisfaction with such personal assistive systems. © 2011 Springer-Verlag

    Baju Batara Kala dalam Resepsi dan Tanggapan Teks: Studi Kasus Lakon Murwakala Sanggit Ki Timbul Hadiprayitno

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    AbstractThis article aims to find Ki Timbul Hadiprayitno’s sanggit about Batara Kala clothes. It is assumed that this sanggit was motivated by the text received by Ki Timbul Hadiprayitno. The research data was in the form of audio-visual recordings of Lakon Murwakala and Lakon Vishnu Ratu. The analysis was conducted with reference to Burhan Nurgiyantoro’s intertextual concept. The intertextual concept says that there is a relationship between one text and another, between text and socio-cultural The resulting text can be said to be a new work. But in the concept of intertext, the framework and ideas of the work being received are still recognizable. Qualitative descriptive methods were used in this study. From the results of the analysis, it was concluded that the phenomenon of Batara Kala clothes was the result of the reception of the text of Serat Pustakaraja Purwa, which was then applied to the Lakon Murwakala and Lakon Wisnu Ratu.AbstrakTulisan ini bertujuan menemukan sanggit Ki Timbul Hadiprayitno tentang baju Batara Kala. Diasumsikan sanggit tersebut dilatarbelakangi oleh teks yang diresepsi Ki Timbul Hadiprayitno. Data penelitian berupa rekaman audio-visual Lakon Murwakala dan Lakon Wisnu Ratu. Analisis dilakukan dengan mengacu pada konsep intertekstual Burhan Nurgiyantoro. Konsep intertekstual tersebut mengatakan bahwa terdapat hubungan antara teks satu dengan teks lain, antara teks dan konteks sosial budaya. Teks yang dihasilkan itu dapat dikatakan sebagai karya baru. Namun dalam konsep interteks, kerangka dan gagasan dari karya yang diresepsi masih dapat dikenali. Metode deskriptif kualitatif digunakan dalam penelitian ini. Dari hasil analisis diperoleh kesimpulan bahwa fenomena baju Batara Kala tersebut adalah hasil resepsi teks Serat Pustaka Raja Purwa, yang kemudian dituangkan ke dalam Lakon Murwakala dan Lakon Wisnu Ratu

    Clinical prediction models

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    Objective!#!The aim of this study was to evaluate the validity of a semiautomated volumetric approach (5DCNS+) for the detailed assessment of the fetal brain in a clinical setting.!##!Methods!#!Stored 3D volumes of > 1100 consecutive 2nd and 3rd trimester pregnancies (range 15-36 gestational weeks) were analyzed using a workflow-based volumetric approach 5DCNS+, enabling semiautomated reconstruction of diagnostic planes of the fetal central nervous system (CNS). All 3D data sets were examined for plane accuracy, the need for manual adjustment, and fetal-maternal characteristics affecting successful plane reconstruction. We also examined the potential of these standardized views to give additional information on proper gyration and sulci formation with advancing gestation.!##!Results!#!Based on our data, we were able to show that gestational age with an OR of 1.085 (95% CI 1.041-1.132) and maternal BMI with an OR of 1.022 (95% CI 1.041-1.054) only had a slight impact on the number of manual adjustments needed to reconstruct the complete volume, while maternal age and fetal position during acquisition (p = 0.260) did not have a significant effect. For the vast majority (958/1019; 94%) of volumes, using 5DCNS+ resulted in proper reconstruction of all nine diagnostic planes. In less than 1% (89/9171 planes) of volumes, the program failed to give sufficient information. 5DCNS+ was able to show the onset and changing appearance of CNS folding in a detailed and timely manner (lateral/parietooccipital sulcus formation seen in < 65% at 16-17 gestational weeks vs. 94.6% at 19 weeks).!##!Conclusions!#!The 5DCNS+ method provides a reliable algorithm to produce detailed, 3D volume-based assessments of fetal CNS integrity through a standardized reconstruction of the orthogonal diagnostic planes. The method further gives valid and reproducible information regarding ongoing cortical development retrieved from these volume sets that might aid in earlier in utero recognition of subtle structural CNS anomalies

    Neuron-Specific HuR-Deficient Mice Spontaneously Develop Motor Neuron Disease

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    Human Ag R (HuR) is an RNA binding protein in the ELAVL protein family. To study the neuron-specific function of HuR, we generated inducible, neuron-specific HuR-deficient mice of both sexes. After tamoxifen-induced deletion of HuR, these mice developed a phenotype consisting of poor balance, decreased movement, and decreased strength. They performed significantly worse on the rotarod test compared with littermate control mice, indicating coordination deficiency. Using the grip-strength test, it was also determined that the forelimbs of neuron-specific HuR-deficient mice were much weaker than littermate control mice. Immunostaining of the brain and cervical spinal cord showed that HuR-deficient neurons had increased levels of cleaved caspase-3, a hallmark of cell apoptosis. Caspase-3 cleavage was especially strong in pyramidal neurons and α motor neurons of HuR-deficient mice. Genome-wide microarray and real-time PCR analysis further indicated that HuR deficiency in neurons resulted in altered expression of genes in the brain involved in cell growth, including trichoplein keratin filament-binding protein, Cdkn2c, G-protein signaling modulator 2, immediate early response 2, superoxide dismutase 1, and Bcl2. The additional enriched Gene Ontology terms in the brain tissues of neuron-specific HuR-deficient mice were largely related to inflammation, including IFN-induced genes and complement components. Importantly, some of these HuR-regulated genes were also significantly altered in the brain and spinal cord of patients with amyotrophic lateral sclerosis. Additionally, neuronal HuR deficiency resulted in the redistribution of TDP43 to cytosolic granules, which has been linked to motor neuron disease. Taken together, we propose that this neuron-specific HuR-deficient mouse strain can potentially be used as a motor neuron disease model

    Clinical prediction model to identify vulnerable patients in ambulatory surgery: towards optimal medical decision-making

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    __Background:__ Ambulatory surgery patients are at risk of adverse psychological outcomes such as anxiety, aggression, fatigue, and depression. We developed and validated a clinical prediction model to identify patients who were vulnerable to these psychological outcome parameters. __Methods:__ We prospectively assessed 383 mixed ambulatory surgery patients for psychological vulnerability, defined as the presence of anxiety (state/trait), aggression (state/trait), fatigue, and depression seven days after surgery. Three psychological vulnerability categories were considered–i.e., none, one, or multiple poor scores, defined as a score exceeding one standard deviation above the mean for each single outcome according to normative data. The following determinants were assessed preoperatively: sociodemographic (age, sex, level of education, employment status, marital status, having children, religion, nationality), medical (heart rate and body mass index), and psychological variables (self-esteem and self-efficacy), in addition to anxiety, aggression, fatigue, and depression. A prediction model was constructed using ordinal polytomous logistic regression analysis, and bootstrapping was applied for internal validation. The ordinal c-index (ORC) quantified the discriminative ability of the model, in addition to measures for overall model performance (Nagelkerke’s R2). __Results:__ In this population, 137 (36%) patients were identified as being psychologically vulnerable after surgery for at least one of the psychological outcomes. The most parsimonious and optimal prediction model combined sociodemographic variables (level of education, having children, and nationality) with psychological variables (trait anxiety, state/trait aggression, fatigue, and depression). Model performance was promising: R2 = 30% and ORC = 0.76 after correction for optimism. __Conclusion:__ This study identified a substantial group of vulnerable patients in ambulatory surgery. The proposed clinical prediction model could allow healthcare professionals the opportunity to identify vulnerable patients in ambulatory surgery, although additional modification and validation are needed. (ClinicalTrials.gov number, NCT01441843)

    IKKα negatively regulates ASC-dependent inflammasome activation.

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    The inflammasomes are multiprotein complexes that activate caspase-1 in response to infections and stress, resulting in the secretion of pro-inflammatory cytokines. Here we report that IκB kinase α (IKKα) is a critical negative regulator of apoptosis-associated specklike protein containing a C-terminal caspase-activation-andrecruitment (CARD) domain (ASC)-dependent inflammasomes. IKKα controls the inflammasome at the level of the adaptor ASC, which interacts with IKKα in the nucleus of resting macrophages in an IKKα kinase-dependent manner. Loss of IKKα kinase activity results in inflammasome hyperactivation. Mechanistically, the downstream nuclear effector IKK-related kinase (IKKi) facilitates translocation of ASC from the nucleus to the perinuclear area during inflammasome activation. ASC remains under the control of IKKα in the perinuclear area following translocation of the ASC/IKKα complex. Signal 2 of NLRP3 activation leads to inhibition of IKKα kinase activity through the recruitment of PP2A, allowing ASC to participate in NLRP3 inflammasome assembly. Taken together, these findings reveal a IKKi-IKKα-ASC axis that serves as a common regulatory mechanism for ASC-dependent inflammasomes

    Restoring testosterone levels by adding dehydroepiandrosterone to a drospirenone containing combined oral contraceptive: II Clinical effects

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    Objectives: Combined oral contraceptives (COCs) decrease androgen levels, including testosterone (T), which may be associated with sexual dysfunction and mood complaints in some women. We have shown that co-administration of dehydroepiandrosterone (DHEA) to a drospirenone (DRSP) containing COC restored total T levels to baseline and free T levels by 47%. Here we describe the effects on sexual function, mood and quality of life of such an intervention. Study design: This was a randomized, double-blind, placebo-controlled study in 99 healthy COC starters. A COC containing 30 μg ethinylestradiol (EE) and 3 mg DRSP was used for 3 cycles, followed by 6 cycles of the same COC combined with 50 mg/day DHEA or placebo. Subjects completed the Moos Menstrual Distress Questionnaire (MDQ), the McCoy Female Sexuality Questionnaire (MFSQ) and the short form of the Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q). Safety and tolerability, including effects on skin were evaluated. Results: The addition of DHEA induced small, but significant improvements compared to placebo in the MDQ score for: Autonomic reactions during the menstrual (- 2.0 vs 0.71; P = 0.05) and the pre-menstrual phase (- 3.1 vs 2.9; P = 0.01); and for Behavior during the inter-menstrual phase (- 1.4 vs 3.6; P = 0.02). A significant difference was found in the MDQ score for arousal during the pre-menstrual phase in favor of placebo (- 5.0 vs 1.0; P = 0.01). There were no statistically significant differences between groups for the MSFQ and Q-LES-Q scores. DHEA co-administration resulted in an acceptable safety profile. DHEA negated the beneficial effect of the COC on acne according to the subjects' self-assessment. Conclusions: Co-administration with DHEA did not result in consistent improvements in sexual function, mood and quality of life indicators in women taking EE/DRSP. Retrospectively, the 50 mg dose of DHEA may be too low for this COC. Implications: A well-balanced judgment of the clinical consequences of normalizing androgens during COC use may require complete normalization of free T

    Restoring testosterone levels by adding dehydroepiandrosterone to a drospirenone containing combined oral contraceptive: I Endocrine effects

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    Objectives: Combined oral contraceptives (COCs) decrease testosterone (T) levels. This study investigated restoration of T and other androgen concentrations during COC use by co-administration of dehydroepiandrosterone (DHEA). Study design: In this randomized, double-blind, placebo-controlled study in 99 new COC starters (18-35 years old with BMI range 18-34 kg/m2), a COC containing 30 μg ethinylestradiol (EE) and 3 mg drospirenone (DRSP) was used for 3 cycles, followed by 6 cycles of the same COC combined with either 50 mg/day DHEA or placebo. Total T, albumin, sex hormone-binding globulin (SHBG), DHEA-sulfate (DHEA-S), Δ4-androstenedione (AD), 3α-androstanediol glucuronide (ADG) and estradiol (E2) were measured, whereas free T and the free T index (FTI) were calculated. Assessments took place at baseline (no COC use), after the run-in period (COC use alone) and during the treatment period (DHEA or placebo). Results: During COC use alone androgen levels decreased, especially total T by 62% and free T by 86%, and SHBG increased by 243%. Total T increased with DHEA compared to placebo (change from end of run-in period to end of treatment period: 1.3 ± 1.2 nmol/L vs 0.0 ± 0.4 nmol/L; P < 0.0001), and was restored to baseline levels. Free T and the FTI increased significantly (P < 0.0001), but the free T level was still 53% below baseline levels. DHEA-S, AD and ADG increased significantly to levels above baseline (P < 0.0001 for each). DHEA had no effect on SHBG, albumin and E2. Conclusions: An EE/DRSP containing COC strongly suppressed endogenous androgen concentrations in all users. The addition of 50 mg DHEA to a COC regimen containing EE/DRSP restored total T to baseline levels, but free T levels were restored by only 47% as most of the T remains bound to SHBG. Implications: When using a COC that increases SHBG considerably, a daily dose of 50 mg DHEA is insufficient to normalize free T levels completely

    Premenopausal endogenous oestrogen levels and breast cancer risk: a meta-analysis.

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    BACKGROUND: Many of the established risk factors for breast cancer implicate circulating hormone levels in the aetiology of the disease. Increased levels of postmenopausal endogenous oestradiol (E2) have been found to increase the risk of breast cancer, but no such association has been confirmed in premenopausal women. We carried out a meta-analysis to summarise the available evidence in women before the menopause. METHODS: We identified seven prospective studies of premenopausal endogenous E2 and breast cancer risk, including 693 breast cancer cases. From each study we extracted odds ratios of breast cancer between quantiles of endogenous E2, or for unit or s.d. increases in (log transformed) E2, or (where odds ratios were unavailable) summary statistics for the distributions of E2 in breast cancer cases and unaffected controls. Estimates for a doubling of endogenous E2 were obtained from these extracted estimates, and random-effect meta-analysis was used to obtain a pooled estimate across the studies. RESULTS: Overall, we found weak evidence of a positive association between circulating E2 levels and the risk of breast cancer, with a doubling of E2 associated with an odds ratio of 1.10 (95% CI: 0.96, 1.27). CONCLUSION: Our findings are consistent with the hypothesis of a positive association between premenopausal endogenous E2 and breast cancer risk
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