To see the other types of publications on this topic, follow the link: Symmetrical vs Asymmetrical.
Journal articles on the topic 'Symmetrical vs Asymmetrical'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Symmetrical vs Asymmetrical.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Yang, Gink N., Parinaz Ahangar, Xanthe L. Strudwick, Zlatko Kopecki, and Allison J. Cowin. "Overexpression of Flii during Murine Embryonic Development Increases Symmetrical Division of Epidermal Progenitor Cells." International Journal of Molecular Sciences 22, no. 15 (2021): 8235. http://dx.doi.org/10.3390/ijms22158235.
Full textAbstract:
Epidermal progenitor cells divide symmetrically and asymmetrically to form stratified epidermis and hair follicles during late embryonic development. Flightless I (Flii), an actin remodelling protein, is implicated in Wnt/β-cat and integrin signalling pathways that govern cell division. This study investigated the effect of altering Flii on the divisional orientation of epidermal progenitor cells (EpSCs) in the basal layer during late murine embryonic development and early adolescence. The effect of altering Flii expression on asymmetric vs. symmetric division was assessed in vitro in adult human primary keratinocytes and in vivo at late embryonic development stages (E16, E17 and E19) as well as adolescence (P21 day-old) in mice with altered Flii expression (Flii knockdown: Flii+/−, wild type: WT, transgenic Flii overexpressing: FliiTg/Tg) using Western blot and immunohistochemistry. Flii+/− embryonic skin showed increased asymmetrical cell division of EpSCs with an increase in epidermal stratification and elevated talin, activated-Itgb1 and Par3 expression. FliiTg/Tg led to increased symmetrical cell division of EpSCs with increased cell proliferation rate, an elevated epidermal SOX9, Flap1 and β-cat expression, a thinner epidermis, but increased hair follicle number and depth. Flii promotes symmetric division of epidermal progenitor cells during murine embryonic development.
2
Yanling, Zhang, and Farzaneh Haratyan. "Comparative Effect of Piagetian Symmetrical Vs. Vygostskyan Asymmetrical Scaffolding on EFL Learners’ Pragmatic Competence." International Journal of English Language Teaching 11, no. 2 (2023): 1–17. http://dx.doi.org/10.37745/ijelt.13/vol11n2117.
Full textAbstract:
Scaffolding is considered a salient part of EFL education for developing different language skills, especially for better communication, and its inevitable impact on learners' psychological processes. The present experimental study primarily investigates the impact of Piagetian symmetrical vs. Vygotskyan asymmetrical scaffolding on EFL learners' pragmatic competence. To this end, the researcher chose approximately 77 intermediate EFL learners based on the results of piloted OPT. Then, the participants were randomly assigned to two groups of 35 and 42 EFL learners. In one group, symmetrical scaffolding (Peers' assistance) was employed, and in the other, asymmetrical scaffolding (teachers' assistance) was implemented as the treatment. The data analyses revealed that participants' pragmatic competence improved significantly through Vygotskyan asymmetrical scaffolding, suggesting learners receive assistance from teachers or competent peers. The findings of this article embrace pedagogical and theoretical implications for EFL curriculum planners, practitioners, teachers, learners, and material developers.
3
Ashraf, T., D. J. Beard, and J. H. Newman. "Symmetrical vs. asymmetrical total knee replacement—a medium term comparative analysis." Knee 10, no. 1 (2003): 61–66. http://dx.doi.org/10.1016/s0968-0160(02)00088-1.
Full text
4
Woźniacka, Renata, Łukasz Oleksy, Agnieszka Jankowicz-Szymańska, Anna Mika, Renata Kielnar, and Artur Stolarczyk. "The Association between Symmetrical or Asymmetrical High-Arched Feet and Muscle Fatigue in Young Women." Symmetry 14, no. 1 (2022): 52. http://dx.doi.org/10.3390/sym14010052.
Full textAbstract:
The foot arches are responsible for proper foot loading, optimal force distribution, and transmission throughout the soft tissues. Since the foot arch is an elastic structure, able to adapt to forces transmitted by the foot, it was reported that low arch is related to excessive foot pronation, while high arched foot is more rigid and inflexible. Therefore, it is also probable, that foot arch alterations may change the force transmission via myofascial chains. The objective of this study was to evaluate the effect of symmetrical and asymmetrical excessive feet arching on muscle fatigue in the distal body parts such as the lower limbs, trunk, and head. Seventy-seven women (25.15 ± 5.97 years old, 62 ± 10 kg, 167 ± 4 cm) were assigned to three groups according to the foot arch index (Group 1—both feet with normal arch, Group 2—one foot with normal arch and the other high-arched, Group 3—both feet with high-arch). The bioelectrical activity of the right and left hamstrings muscles, erector spine, masseter, and temporalis muscle was recorded by sEMG during the isometric contraction lasting for 60 s. The stable intensity of the muscle isometric contraction was kept for all the time during the measurement. Mean frequency difference (%), slope (Hz), and intercept (Hz) values were calculated for muscle fatigue evaluation. No differences were observed in fatigue variables for all evaluated muscles between the right and left side in women with symmetrical foot arches, but in the group with asymmetric foot arches, the higher muscle fatigue on the normal-arched side compared to the high-arched side was noted. Significantly greater values of the semitendinosus—semimembranosus muscle frequency difference was observed on the normal-arched side compared to the high-arched side (p = 0.04; ES = 0.52; −29.5 ± 9.1% vs. −24.9 ± 8.4%). In the group with asymmetric foot arches, a significantly higher value of lumbar erector spinae muscle frequency slope (p = 0.01; ES = 1.32; −0.20 ± 0.04 Hz vs. −0.14 ± 0.05 Hz) and frequency difference (p = 0.04; ES = 0.92; −7.8 ± 3.1% vs. −4.8 ± 3.4%) were observed on the high-arched foot side compared to the side with normal foot arching. The thoracic erector spine muscle frequency slope was significantly larger in women with asymmetrical arches than in those with both feet high-arched (right side: p = 0.01; ES = 1.25; −0.20 ± 0.08 Hz vs. −0.10 ± 0.08 Hz); (left side: p = 0.005; ES = 1,17; −0.19 ± 0.04 Hz vs. −0.13 ± 0.06 Hz) and compared to those with normal feet arches (right side: p = 0.02; ES = 0.58; −0.20 ± 0.08 Hz vs. −0.15 ± 0.09 Hz); (left side: p = 0.005; ES = 0.87; −0.19 ± 0.04 Hz vs. −0.14 ± 0.07 Hz). In the group with asymmetric foot arches, the frequency difference was significantly higher compared to those with both feet high-arched (right side: p = 0.01; ES = 0.87; −15.4 ± 6.8% vs. 10.4 ± 4.3%); (left side: p = 0.01; ES = 0.96; 16.1 ± 6.5% vs. 11.1 ± 3.4%). In the group with asymmetric foot arches, a significantly higher value of the masseter muscle frequency difference was observed on the high-arched side compared to the normal-arched side (p = 0.01; ES = 0.95; 6.91 ± 4.1% vs. 3.62 ± 2.8%). A little increase in the longitudinal arch of the foot, even though such is often not considered as pathological, may cause visible changes in muscle function, demonstrated as elevated signs of muscles fatigue. This study suggests that the consequences of foot high-arching may be present in distal body parts. Any alterations of the foot arch should be considered as a potential foot defect, and due to preventing muscle overloading, some corrective exercises or/and corrective insoles for shoes should be used. It can potentially reduce both foot overload and distant structures overload, which may diminish musculoskeletal system pain and dysfunctions.
5
de la Cruz-Pavía, Irene, Gesche Westphal-Fitch, W. Tecumseh Fitch, and Judit Gervain. "Seven-month-old infants detect symmetrical structures in multi-featured abstract visual patterns." PLOS ONE 17, no. 5 (2022): e0266938. http://dx.doi.org/10.1371/journal.pone.0266938.
Full textAbstract:
The present study investigated 7-month-old infants’ ability to perceive structural symmetry in mosaic-like abstract visual patterns. We examined infants’ (n = 98) spontaneous looking behaviour to mosaic-like sequences with symmetrical and asymmetrical structures. Sequences were composed of square tiles from two categories that differed in their colour scheme and internal shape. We manipulated sequence length (3 or 5 tiles) and abstractness of the symmetry (token vs. category level). The 7-month-olds discriminated structurally symmetrical from asymmetrical mosaics in the first half of the test phase (first 8 trials). Sequence length, level of symmetry, or number of unique tiles per sequence did not significantly modulate infants’ looking behaviour. These results suggest that very young infants detect differences in structural symmetry in multi-featured visual patterns.
6
Gubar, E., T. Korotaeva, Y. Korsakova, et al. "AB0928 CHARACTERISTICS OF AXIAL PSORIATIC ARTHRITIS PATIENTS WITH SYMMETRICAL AND ASYMMETRICAL SACROILIITIS." Annals of the Rheumatic Diseases 81, Suppl 1 (2022): 1592.2–1593. http://dx.doi.org/10.1136/annrheumdis-2022-eular.1589.
Full textAbstract:
BackgroundThe latest data show that psoriatic arthritis (PsA) patients (pts) with asymmetrical sacroiliitis (SI) have clinical and genetic features which are considered typical for PsA (1).ObjectivesTo analyze comparative clinical characteristics of PsA pts with symmetrical and asymmetrical SI.Methods287 pts (M/F–147/140) with PsA according to CASPAR criteria were examined. Data was collected from 6 rheumatology clinics of the Russian Federation. Pts’ age 45.6±12.2 years (yrs), disease duration 10.9±6.7 yrs. Pts underwent standard clinical examination of PsA activity. Disease activity was measured by DAPSA, BASDAI, ASDAS-СRP. The examination involved determining HLA B27 antigen status and X-rays of sacroiliac joints (SIJs) (pelvic radiographs), hands and feet. Bilateral changes in SIJs of grades 2-2, 3-3 and 4-4 were defined as symmetrical SI (sym-SI). Changes in SIJs of grades 2-1, 2-3, 3-1, 1-4, 2-4 and 3-4 were defined as asymmetrical SI (asym-SI). Skin lesion severity was evaluated in terms of body surface area (BSA) affected and Psoriasis Area Severity Index (PASI). When BSA was ≥ 3%, PASI was calculated. Me [Q25; Q75], Pierson-χ2 tests were performed. All p<0.05 were considered to indicate statistical significance.ResultsSym-SI was found in 187 (65.1%) pts, asym-SI – in 100 (34.8%) pts. In group (gr) of pts with asym-SI there were more females than in the sym-SI gr: 63 (63.0%) vs 77 (41.2%; р = 0.0004). Pts with asym-SI had more severe peripheral arthritis as measured by Tender Joint Count (TJC68) and Swollen Joint Count (SJC66). These values were higher in asym-SI gr: 9 (4-16) vs 6 (2-14; р = 0.007) and 5 (2-12) vs 3 (0-9; р = 0.004), respectively. High activity according to DAPSA was found in 53 (54.6%) pts in the asym-SI gr vs 71 (38.8%) in the sym-SI gr (р = 0.01); low activity and remission by DAPSA– in 16 (16.5%) pts vs 51 (28.3%; р = 0.028), respectively. The frequency of enthesitis was higher in the asym-SI gr: 50 (57.5%) pts vs 57 (38.5%) pts (р = 0.005). Pts’ functional capacity as measured by Health Assessment Questionnaire (HAQ) was worse in the asym-SI gr: HAQ>0.5 values were found in 83 (84.7%) pts vs 130 (72.6%) pts (р = 0.023). No significant differences were found between HLA B27 positivities in sym-SI and asym-SI groups (which were 54.2% and 44.0%, respectively; p = 0.23).ConclusionAsym-SI in PsA pts is associated with female gender, more severe peripheral arthritis, higher activity according to DAPSA, more frequency of enthesitis and reduction of pts’ functional capacity.References[1]M. Haroon et al. Clin Exp Rheumatol 2017;35:270-6Disclosure of InterestsELENA GUBAR: None declared, Tatiana Korotaeva Speakers bureau: Pfizer, MSD, Novartis, AbbVie, Janssen, Lilly, Celgene, JSC BIOCAD and Novartis-Sandoz, Yulia Korsakova Speakers bureau: Novartis, Elena Loginova Speakers bureau: Janssen, Lyubov Vorobyova: None declared, Svetlana Glukhova: None declared, Evgeny Nasonov: None declared, Valentina Sorotskaya: None declared, Irina Kushnir: None declared, Ivan Shchendrigin: None declared, Irina Umnova: None declared, Pavel Shesternya: None declared
7
Malkin, Gali, and Rachel Ben Ari. "Prejudice and “Vladimir’s choice” among Israeli Arabs and Jews: Symmetrical vs. asymmetrical trends." Group Processes & Intergroup Relations 16, no. 6 (2013): 814–25. http://dx.doi.org/10.1177/1368430212471736.
Full text
8
Tain, Diana Chieh Xing, Michelle Sheng Rong Lim, Bee Lian Ng, Elizabeth Hammond, and Pak Seng Wong. "The Influence of Day 2 Blastomere Symmetry on Blastocyst Grade and Ploidy Status." Fertility & Reproduction 01, no. 02 (2019): 115–18. http://dx.doi.org/10.1142/s2661318219500117.
Full textAbstract:
Previous studies have suggested that aneuploidy rates are co-related with cell asymmetry at the cleavage stage. A retrospective study was carried out to determine the significance of blastomere symmetry at the 4-cell stage on blastocyst grade and ploidy status. 732 Day 5/6 blastocysts from 191 patients undergoing Pre-implantation Genetic Testing for Aneuploidy were analysed with time-lapse imaging (Embryoscope, Vitrolife) during 2017. Blastomere symmetry was measured at the first image of 4-cells on Day 2 by tabulating the mean diameter of 2 lines drawn perpendicularly on each blastomere. Symmetry was defined as the blastomere diameter difference of [Formula: see text] 25%. Trophectoderm (TE) biopsy was performed on Day 5/6 followed by chromosomal evaluation using Next Generation Sequencing (VeriSeq Protocol, Illumina). Blastocyst grade was classified as either “Good” (inner cell mass (ICM) and TE, AA respectively), “Fair/Good” (AB, BA), “Fair” (BB) and “Poor” (early blastocyst grade 2 or TE grading of C). The significance of blastomere symmetry on blastocyst grade and ploidy status was measured using chi-square tests. There was no significance difference in resulting blastocyst quality for symmetrical and asymmetrical embryos (Table 1: p [Formula: see text] 0.10). Furthermore, there was no significance difference in the euploid rate (42.5% vs. 45.3%) or mosaic rate (22.1% vs. 16.2%) between symmetrical and asymmetrical embryos (p [Formula: see text] 0.24). In conclusion, the presence of asymmetrical blastomeres at the 4-cell stage do not impact the good quality blastocyst formation rate and euploidy rate for embryos that progress into blastocysts. However, this study excludes embryos that do not develop to the blastocyst stage and those with erratic division patterns, direct cleavage and reverse cleavage on Day 2, both of which have potential to influence ploidy result. Asymmetrical 4-cell embryos have the potential for high quality euploid blastocyst progression and can be considered for day 2 embryo transfer in the absence of symmetrical 4-cell embryos.
9
Zamojska, Justyna, Katarzyna Niewiadomska-Jarosik, Beata Kierzkowska, Marta Gruca, Agnieszka Wosiak, and Elżbieta Smolewska. "Lipid Profile in Children Born Small for Gestational Age." Nutrients 15, no. 22 (2023): 4781. http://dx.doi.org/10.3390/nu15224781.
Full textAbstract:
Background: Lipid disorders are one of the risk factors for cardiovascular diseases. The aim of the study was to estimate the lipid profile in early childhood in the population of Polish children born small for gestational age (SGA). Materials and Methods: The study included 140 patients (93 SGA children and 47 controls) aged 5 to 11 years. All the subjects underwent a physical examination and blood laboratory tests for the glucose and lipid profiles. The SGA group was divided into subgroups, i.e., symmetrical and asymmetrical intrauterine growth restriction (IUGR). Results: Blood sample analysis revealed higher levels of total cholesterol (SGA group 190.61 ± 24.66 mg/dL vs. controls 143.23 ± 23.90; p < 0.001). The analysis of particular cholesterol fractions showed significantly higher mean values of triglycerides and LDL cholesterol as well as lower mean values of HDL cholesterol in SGA children. Children in both groups did not differ significantly in terms of weight or body mass index. A statistically significantly higher glucose concentration was observed in SGA patients with the symmetrical type of IUGR. Analyzing the differences regarding metabolic factors, we obtained a statistically significant difference only in fasting glucose concentration (asymmetrical IUGR = 90.56 ± 10.21 vs. symmetrical IUGR = 98.95 ± 14.79; p < 0.001). Conclusions: Children born SGA, even those not suffering from overweight or obesity in their early childhood, have an abnormal lipid profile, which may contribute to the development of cardiovascular diseases in adulthood.
10
Yin, Yuli, Jiali Song, Fengyun Guo, Yanming Sun, Liancheng Zhao, and Yong Zhang. "Asymmetrical vs Symmetrical Selenophene-Annulated Fused Perylenediimide Acceptors for Efficient Non-Fullerene Polymer Solar Cells." ACS Applied Energy Materials 1, no. 11 (2018): 6577–85. http://dx.doi.org/10.1021/acsaem.8b01484.
Full text
11
Krstic, Ksenija, and Aleksandar Baucal. "Symmetrical social relation as a factor in conservation tasks." Psihologija 36, no. 4 (2003): 471–85. http://dx.doi.org/10.2298/psi0304471k.
Full textAbstract:
According to Siegal?s hypothesis, despite having concrete operational abilities some children are not successful in conservation tasks. Social factors, such as repetition of question asked by an adult experimenter alter the manifestation of existing cognitive abilities. This study varied the following aspects of conservation tasks: symmetrical vs. asymmetrical power relation. The children in the study were asked to solve three different conservation tasks (quantity of continued material, length, and number). Each task was repeated twice; once with an adult experimenter and once with a child experimenter. Results show that children?s responses were affected by social factors only in a certain tasks. In other tasks children?s responses remained unaffected in both situations. This suggests that there exists an interaction between the experimenter and the task, and that the affect of social factor is mediated by a particular characteristic of the task. Results indicate that the modifying factor is the task difficulty.
12
Zawadzki, Cláudio H., Claude Weber, and Carla S. Pavanelli. "Two new species of Hypostomus Lacépède (Teleostei: Loricariidae) from the upper rio Paraná basin, Central Brazil." Neotropical Ichthyology 6, no. 3 (2008): 403–12. http://dx.doi.org/10.1590/s1679-62252008000300013.
Full textAbstract:
Two new species of Hypostomus Lacépède (Teleostei: Loricariidae) from the rio Paranaíba and rio Grande basins, both in the upper rio Paraná basin, central Brazil, are described herein. One of them is distinguished from all congeners, except H. albopunctatus, by having the pectoral-fin spine length equal to or smaller than the pelvic-fin spine. From H. albopunctatus, it is distinguished by having round dark spots (vs. pale) on body and fins. The second species is distinguished from all congeners, except H. multidens and H. ternetzi, by having more than 115 teeth (vs. less than 109) per ramus on dentary and premaxilla. It is distinguished most readily from H. ternetzi by having teeth with two symmetrical (vs. asymmetrical) cusps. It is distinguished from H. multidens by having round dark spots (vs. pale) over body and fins.
13
Teletin, Andreea, and Veronica Manole. "Formes nominales d’adresse au vocatif et l’expression des relations sociales en roumain, portugais et français." Studia Universitatis Babeș-Bolyai Philologia 65, no. 4 (2020): 383–400. http://dx.doi.org/10.24193/subbphilo.2020.4.23.
Full textAbstract:
"Vocative Nominal Address Forms and the Expression of Social Relations in Romanian, Portuguese, and French. In this paper we analyze the vocative, the grammatical case that speakers use to encode the interlocutor in discourse, based on several criteria: symmetrical or asymmetrical social relations, close or distant relations, written vs spoken communication, regional usages, etc. Our socio-pragmatic analysis based on vocatives used in the novel Wasted Morning by Gabriela Adameșteanu and the Portuguese and French translations identifies the values of these linguistic means according to the relational dynamics among characters, their social status, the level of education, and gender. Keywords: vocative, nominal address forms, Romanian, Portuguese, French."
14
Miękisiak, Grzegorz, Rafał Załuski, Dariusz Szarek, et al. "The Symmetry of Lower Back Pain as a Potential Screening Factor for Serious Pathology: A Survey Study." Symmetry 13, no. 11 (2021): 1994. http://dx.doi.org/10.3390/sym13111994.
Full textAbstract:
Background: Pain maps provide reliable information on pain location in various conditions. This study explored the feasibility of pain maps as a screening tools for serious underlying conditions. The pain symmetry was evaluated as the possible distinguishing feature. Methods: A Web-based survey on the correlation of pain-related disability and pain pattern was developed. Respondents with lower back pain were asked to mark the exact location of their pain over the pain chart. The symmetry index was calculated and used to divide subjects into two groups that were then compared in terms of the prevalence of red flags for serious pathologies, as well as the pain-related disability measured with COMI and ODI instruments. Results: Of the 4213 respondents who completed the survey, 1018 were included in the study. The pain related disability was greater in respondents with asymmetrical pain patterns, as shown with all instruments. The distribution of red flags was also dependent on pain symmetry. The history of weight loss (6.70 vs. 1.76 p < 0.001) and fever (4.91 vs. 2.14 p < 0.001) were more prevalent with symmetrical pain patterns, and the history of trauma was more frequent with asymmetrical pain (21.41 vs. 10.71 p < 0.001). Conclusions: It was shown that the symmetry of pain is correlated to the prevalence of red flags and pain-related disability.
15
Peng, Guoxing, Tongjun Liang, Jipeng Liang, et al. "Morphological and Molecular Evidence for a New Species Within Styrax (Styracaceae) from a Karst Area in Southwest Guangxi, China." Plants 14, no. 12 (2025): 1789. https://doi.org/10.3390/plants14121789.
Full textAbstract:
Styrax chongzuoensis, a novel endemic species with a narrow distribution in limestone regions of Chongzuo, Guangxi, China, is described herein. This new species seems somewhat similar to Styrax fortunei, but significantly differs from it by having long ovate or long lanceolate leaves, often with an asymmetrical base (vs. obovate-elliptic to elliptic, often with a symmetrical base) and fertile shoots with fewer flowers (1, or rarely 2 or 3, vs. many, always more than 10). Phylogenetic analyses based on the chloroplast coding sequences indicated that S. chongzuoensis and Styrax japonicus are sister taxa to each other, both clustered in the series Cyrta within Styrax. Overall, the integration of morphological and phylogenetic evidence indicates that S. chongzuoensis actually represents a new species. Color plates of S. chongzuoensis are illustrated, and a distribution map and conservation assessment of this species are also provided.
16
Piayda, Kerstin, Lisa Dannenberg, Saif Zako, et al. "Predictors of calcification distribution in severe tricuspid aortic valve stenosis." International Journal of Cardiovascular Imaging 37, no. 9 (2021): 2791–99. http://dx.doi.org/10.1007/s10554-021-02248-6.
Full textAbstract:
AbstractWe investigated aortic valve calcification (AVC) distribution and predictors for leaflet calcification patterns in patients with severe tricuspid aortic valve stenosis undergoing transcatheter aortic valve replacement (TAVR). Patients undergoing routine multi-sliced computed tomography (MSCT) for procedural planning were enrolled. MSCT data were transferred to a dedicated workstation for evaluation (3mensio Structural Heart™, Pie Medical Imaging BV, Maastricht, The Netherlands) and analyzed. Participants were separated into asymmetrical (AC) and symmetrical (SC) leaflet calcification and potential predictors for calcification distribution were identified with univariate and multivariate regression analysis. 567 Participants with severe tricuspid AS were divided into asymmetrical (AC, n = 443; 78.1%) and symmetrical (SC, n = 124; 21.9%) AVC. In AC, the non-coronary cusp was the most calcified cusp (n = 238; 57.7%). SC is more common in females (AC/SC: 49.2% vs. 67.7%; p < 0.0001). AVC was more severe in patients with AC, who also have larger aortic root dimensions. Multivariate analysis depicted, inter alia, left ventricular outflow tract (LVOT) calcification < 25 Agatston units (OR 1.81 [1.09–3.00], p = 0.021), a mean pressure gradient < 36 mmHg (OR 1.77 [1.03–3.05], p = 0.039), and an annulo-apical angle > 67° (OR 1.68 [1.00–2.80], p = 0.049) as predictors for SC, although with only moderate predictive value. Data from this retrospective analysis indicate that SC occurs more frequently in females. The cumulative leaflet calcification burden is higher in patients with AC, who also present with larger aortic root dimensions. The predictive value for prominent calcification of different aortic valve cusps in AC patients was only low to moderate.Trial registration number: NCT01805739.
17
Reybrouck, Mark. "A Dynamic Interactive Approach to Music Listening: The Role of Entrainment, Attunement and Resonance." Multimodal Technologies and Interaction 7, no. 7 (2023): 66. http://dx.doi.org/10.3390/mti7070066.
Full textAbstract:
This paper takes a dynamic interactive stance to music listening. It revolves around the focal concept of entrainment as an operational tool for the description of fine-grained dynamics between the music as an entraining stimulus and the listener as an entrained subject. Listeners, in this view, can be “entrained” by the sounds at several levels of processing, dependent on the degree of attunement and alignment of their attention. The concept of entrainment, however, is somewhat ill-defined, with distinct conceptual labels, such as external vs. mutual, symmetrical vs. asymmetrical, metrical vs. non-metrical, within-persons and between-person, and physical vs. cognitive entrainment. The boundaries between entrainment, resonance, and synchronization are also not always very clear. There is, as such, a need for a broadened approach to entrainment, taking as a starting point the concept of oscillators that interact with each other in a continuous and ongoing way, and relying on the theoretical framework of interaction dynamics and the concept of adaptation. Entrainment, in this broadened view, is seen as an adaptive process that accommodates to the music under the influence of both the attentional direction of the listener and the configurations of the sounding stimuli.
18
Winiarski, Sławomir, Dorota Molek-Winiarska, and Barbara Chomątowska. "From Motion to Prevention: Evaluating Ergonomic Risks of Asymmetrical Movements and Worker Well-Being in an Assembly Line Work." Applied Sciences 15, no. 2 (2025): 560. https://doi.org/10.3390/app15020560.
Full textAbstract:
(1) Background: This study examines the association between asymmetrical movements of an assembly line and machining workers and their overall well-being. The primary aim is to quantify the extent to which asymmetrical movements serve as predictors of work-related musculoskeletal disorders (WMSDs) among these workers and their overall well-being. The study emphasises the predictive relationships between asymmetry metrics and health outcomes. (2) Methods: The study included 86 employees from an automotive manufacturing plant, categorised into machining workers (MWEs) and assembly workers (AWEs). The employment duration spanned from 6 months to 40 years. Inertial motion capture technology was employed alongside the Goldberg 28-item General Health Questionnaire for a retrospective observational analysis and assessment of worker well-being. Movement dynamics were evaluated using a Motion Activity Index (MAI) to measure movement intensity, asymmetry, and quality. (3) Results: The machining group demonstrated nearly double the range of motion (median ROM: 36.6° vs. 25.5°, p = 0.019) and peak angular velocities up to eight times higher (median: 40°/s vs. 5°/s) in lumbar and thoracic rotations compared to the assembly group. Significant differences in ROM and movement speeds were observed (p < 0.001). The MAI showed higher dynamic and symmetrical movements in the machining group (36.6% vs. 25.5%, p = 0.019). No significant mental health issues were identified, aside from complaints related to somatic symptoms. (4) Conclusions: This study highlights significant occupational risks due to movement asymmetry in industrial settings, revealing substantial differences in joint angular displacements, velocities, and accelerations between machining and assembly workers. The findings emphasise the importance of targeted ergonomic interventions to enhance worker well-being and advocate for preventive health measures in occupational environments.
19
Veranso-Libalah, Marie Claire, Olivier Lachenaud, Robert Douglas Stone, and Gudrun Kadereit. "Nothodissotis (Melastomataceae), a new genus from Atlantic Central Africa, including the new species N. alenensis from Equatorial Guinea." PhytoKeys 118 (March 7, 2019): 89–103. http://dx.doi.org/10.3897/phytokeys.118.31572.
Full textAbstract:
Based on morphological and phylogenetic evidence, a new genus of Melastomataceae (Melastomateae), Nothodissotis Veranso-Libalah &amp; G.Kadereit, gen. nov., is described from Atlantic Central Africa. Nothodissotis is distinguished from other African Melastomateae genera by its calyx-lobes that are notched at apex and asymmetrical (vs. entire and symmetrical). Nothodissotis includes two species: the type species N.barteri (Hook.f.) Veranso-Libalah &amp; G.Kadereit, comb. nov. (syn. Dissotisbarteri Hook.f.), and the new species N.alenensis Veranso-Libalah &amp; O. Lachenaud, sp. nov., described and illustrated here. Both species are restricted to open vegetation on rock outcrops within the forested region of Atlantic Central Africa. Nothodissotisbarteri has a scattered distribution in Cameroon, Equatorial Guinea, Gabon and Príncipe Island, while N.alenensis is endemic to the Monte Alén massif in Equatorial Guinea, an area where N.barteri does not occur. Nothodissotisalenensis differs from N.barteri by its hypanthium bearing sessile appendages with penicillate hairs (vs. stalked stellate appendages) and its staminal appendages that are much smaller in antepetalous than in antesepalous stamens (vs. subequal in all stamens). The conservation status of both N.barteri and N.alenensis is assessed as Vulnerable in accordance with IUCN criteria.
20
Veranso-Libalah, Marie Claire, Olivier Lachenaud, Robert Douglas Stone, and Gudrun Kadereit. "Nothodissotis (Melastomataceae), a new genus from Atlantic Central Africa, including the new species N. alenensis from Equatorial Guinea." PhytoKeys 118 (March 7, 2019): 89–103. https://doi.org/10.3897/phytokeys.118.31572.
Full textAbstract:
Based on morphological and phylogenetic evidence, a new genus of Melastomataceae (Melastomateae), Nothodissotis Veranso-Libalah & G.Kadereit, gen. nov., is described from Atlantic Central Africa. Nothodissotis is distinguished from other African Melastomateae genera by its calyx-lobes that are notched at apex and asymmetrical (vs. entire and symmetrical). Nothodissotis includes two species: the type species N. barteri (Hook.f.) Veranso-Libalah & G.Kadereit, comb. nov. (syn. Dissotis barteri Hook.f.), and the new species N. alenensis Veranso-Libalah & O. Lachenaud, sp. nov., described and illustrated here. Both species are restricted to open vegetation on rock outcrops within the forested region of Atlantic Central Africa. Nothodissotis barteri has a scattered distribution in Cameroon, Equatorial Guinea, Gabon and Príncipe Island, while N. alenensis is endemic to the Monte Alén massif in Equatorial Guinea, an area where N. barteri does not occur. Nothodissotis alenensis differs from N. barteri by its hypanthium bearing sessile appendages with penicillate hairs (vs. stalked stellate appendages) and its staminal appendages that are much smaller in antepetalous than in antesepalous stamens (vs. subequal in all stamens). The conservation status of both N. barteri and N. alenensis is assessed as Vulnerable in accordance with IUCN criteria.
21
Ahimbisibwe, Ashley, Morten Valberg, Adele C. Green, et al. "Nevus Count, Pigmentary Characteristics, and Melanoma-specific Mortality among Norwegian Women with Melanoma >1.0 mm Thick." Acta Dermato-Venereologica 103 (April 4, 2023): adv4403. http://dx.doi.org/10.2340/actadv.v103.4403.
Full textAbstract:
Little is known about if and how nevi and pigmentation are associated with melanoma-specific mortality. However, increased melanoma awareness in people with lighter pigmentation and many nevi may result in earlier diagnosis of thinner less-lethal tumors. The aim of this study was to investigate associations between nevus count (asymmetrical > 5 mm and small symmetrical), pigmentary characteristics (hair colour, eye colour, skin colour, freckling, pigmentary score), and melanoma-specific mortality in subjects with melanomas > 1 mm. Data from the Norwegian Women and Cancer cohort, established in 1991, with complete follow-up of melanoma patients until 2018 through the Cancer Registry of Norway, were used to estimate hazard ratios with 95% confidence intervals for the associations between nevus count, pigmentary characteristics, and melanoma-specific mortality, stratified by tumor thickness using Cox regression. Estimated hazard ratios consistently indicated a higher risk of melanoma death for those with darker vs lighter pigmentary characteristics in patients with tumors > 1.0–2.0 mm and > 2.0 mm thick (e.g. pigmentary score hazard ratio 1.25, 95% confidence interval (0.74–2.13)). Among women with melanomas > 1.0 mm thick, lighter pigmentation and asymmetrical nevi may be associated with lower melanoma-specific mortality, suggesting that factors that increase the risk of melanoma may also be associated with decreased risk of death from melanoma.
22
Moyer-Mileur, Laurie J., Jerald D. King, and Shauna D. Ball. "Does Growth Rate Differ Between Symmetrical vs Asymmetrical Small-for-Gestation (SGA), Extremely Low-Birth Weight (ELBW;<1000 gm) Infants? 1554." Pediatric Research 43 (April 1998): 265. http://dx.doi.org/10.1203/00006450-199804001-01576.
Full text
23
Edelman, Paula M., Robert W. Lingua, and Stanley P. Azen. "A Comparison of the Effect of Symmetrical vs. Asymmetrical Esotropia Surgery on the AC/A Ratio and on the Distance-Near Disparity." American Orthoptic Journal 36, no. 1 (1986): 58–64. http://dx.doi.org/10.1080/0065955x.1986.11981698.
Full text
24
Kayser, Jay, and Kimson Johnson. "DIRECTION MATTERS: THE ASYMMETRICAL EFFECT OF SOCIAL ISOLATION ON COGNITION." Innovation in Aging 8, Supplement_1 (2024): 1303. https://doi.org/10.1093/geroni/igae098.4164.
Full textAbstract:
Abstract Social isolation poses significant risks to cognitive health in older adults, with isolated individuals facing higher risks of cognitive impairment. However, existing research assumes symmetrical effects of increases and decreases in social isolation. This study examines the impact of changes in social isolation on cognition using data from the National Health and Aging Trends Study (2011-2018). Social isolation was measured using a 4-item scale based on Berkman and Syme’s Social Network Index, and cognition was assessed using a dichotomous classification of dementia (no dementia vs possible or probable dementia) and domain-specific cognitive testing. Fixed-effects models with first differencing and robust standard errors were used to estimate the asymmetrical effects of variations in social isolation on cognition. Increases in social isolation increased the odds of possible or probable dementia (OR=1.13, p =.02), while decreases in isolation did not decrease odds of dementia classification. For specific cognitive domains, increased social isolation predicted decreased recall (β = -0.07, p =.02) but decreased social isolation did not predict increased recall. Both increases and decreases in social isolation were associated with changes in orientation such that decreased social isolation predicted improved orientation (β = 0.06, p &lt;.001), and increased social isolation predicted lower orientation (β = - 0.06, p &lt;.001). Executive function was not predicted by changes in social isolation. These findings highlight the asymmetrical nature of changes in social isolation on cognition. Social isolation primary prevention efforts may yield a greater impact in reducing adverse cognitive outcomes than secondary and tertiary interventions.
25
Martins, Joana Meneses, Liliana Gavinha Costa, Ana Lidia Carvalho, et al. "The Impact of Dental Midline on Asymmetric Faces: Perspective of Laypersons and Dentists." International Journal of Environmental Research and Public Health 18, no. 24 (2021): 12904. http://dx.doi.org/10.3390/ijerph182412904.
Full textAbstract:
Background: The objective was to determine if asymmetric facial features, nasal and chin deviations, affect the perception of attractiveness of a dental midline angulation, and if it is consistent among both dentists and laypeople. It was also analyzed if factors, such as the sex, age group of the participants and the dentist’s area of operation are relevant in their assessment. Methods: A cross-sectional study, approved by the Ethics Committee of Fernando Pessoa University. From a symmetrical facial model (SFM) image, a natural-looking asymmetrical face was created. Based on this asymmetric facial model six images were created, with different directions and degrees of inclination of the dental midline. In total, 236 laypersons and 242 dentists completed the online questionnaire where they rated the self-perception of attractiveness of the eight images (VAS scale from 0 to 10). Non-parametric comparisons (IBM© SPSS Statistics vs. 27.0, p < 0.05). Results: The results showed a significant difference in the perception of attractiveness between laypeople and dentists. This finding was consistent regarding every image, except for the SFM. The factors, sex of the people participating and dentist’s area of operation, seemed only to contribute to a significant difference in the perception when it came to the SFM. The perceived attractiveness of the images, for dentists and laypersons, did not differ by age group of the participant, apart from images 6 and 8. Conclusions: Dentists are more rigorous about dental midline inclinations than laypersons. The perception of attractiveness was affected by the age group and sex of the participants and the dentist’s area of operation.
26
Susska, Olga. "Institutionality vs prosperity: Changes in the media landscape and methodological gaps in the sociology of mass communications." Sociology: Theory, Methods, Marketing, Stmm 2019 (1) (March 22, 2019): 56–72. http://dx.doi.org/10.15407/sociology2019.01.056.
Full textAbstract:
The paper focuses on the current understanding of institutional nature intrinsic to communicative relations in the mass media. These relations have an asymmetrical status marked by non-antagonistic confrontation with regard to a new status of privacy-agency. The latter is characterised by self-sufficiency and prosperity, which is illustrated by “participatory journalism”. This confrontation takes place in professional journalism as well, whose agents (in particular, members of the National Union of Journalists of Ukraine) have their own, sometimes rather divergent views on the understanding of processes occurring now in the media-communicative space. Being blocked by the owners’ instructions, these subordinate media are unable to facilitate the development of democratic levers in society. As for violence against journalists, it has been driven by the opposition of the institutionalised communicator to a new status known as a “personified entity”, which is not subject to any authority. The author researches into the particularities of the journalist community’s perception and awareness of changes occurring in the behaviour of media audiences, position of the media themselves in today’s society and the nature of prospective relationships between the institutionalised communicator and journalists. The former (despite trying to preserve asymmetry in the media-communicative space) is gradually acknowledging the presence of new personified entities and their success in building symmetrical communicative relationships and formulating relevant principles of information exchange in the present-day mass media.
27
Xia, Shen-Ling, Seung-Hyun Noh, Jill W. Verlander, Craig H. Gelband, and Charles S. Wingo. "Apical membrane of native OMCDi cells has nonselective cation channels." American Journal of Physiology-Renal Physiology 281, no. 1 (2001): F48—F55. http://dx.doi.org/10.1152/ajprenal.2001.281.1.f48.
Full textAbstract:
The purpose of this study was to examine cation channel activity in the apical membrane of the outer medullary collecting duct of the inner stripe (OMCDi) using the patch-clamp technique. In freshly isolated and lumen-opened rabbit OMCDi, we have observed a single channel conductance of 23.3 ± 0.6 pS ( n = 17) in cell-attached (c/a) patches with high KCl in the bath and in the pipette at room temperature. Channel open probability varied among patches from 0.06 ± 0.01 at −60 mV ( n = 5) to 0.31 ± 0.04 at 60 mV ( n = 6) and consistently increased upon membrane depolarization. In inside-out (i/o) patches with symmetrical KCl solutions, the channel conductance (22.8 ± 0.8 pS; n = 10) was similar as in the c/a configuration. Substitution of the majority of Cl− with gluconate from KCl solution in the pipette and bath did not significantly alter reversal potential ( E rev) or the channel conductance (19.7 ± 1.1 pS in asymmetrical potassium gluconate, n = 4; 21.4 ± 0.5 pS in symmetrical potassium gluconate, n = 3). Experiments with 10-fold lower KCl concentration in bath solution in i/o patches shifted E rev to near the E rev of K+. The estimated permeability of K+ vs. Cl− was over 10, and the conductance was 13.4 ± 0.1 pS ( n = 3). The channel did not discriminate between K+ and Na+, as evidenced by a lack of a shift in the E rev with different K+ and Na+ concentration solutions in i/o patches ( n = 3). The current studies demonstrate the presence of cation channels in the apical membrane of native OMCDicells that could participate in K+ secretion or Na+ absorption.
28
Verbanck, Sylvia, and Manuel Paiva. "Simulation of the apparent diffusion of helium-3 in the human acinus." Journal of Applied Physiology 103, no. 1 (2007): 249–54. http://dx.doi.org/10.1152/japplphysiol.01384.2006.
Full textAbstract:
Functional MRI of the lungs with hyperpolarized helium provides an index of apparent diffusion measured over several seconds (ADCsec) that is only 2% of its free diffusion in air (0.88 cm2/s). The potential of ADCsec to noninvasively assess in vivo lung structure of diseased lungs at the length scales corresponding to several seconds is critically dependent on the exact link between ADCsec and lung peripheral structure. To understand the intruigingly small ADCsec, numerical simulations of gas transport were performed in 1) a trumpet model, 2) a symmetrical, and 3) an asymmetrical multiple-branch-point model of the human acinus. For initial gas boluses in different locations of the acinar models, ADCsec was quantified as follows. At different time intervals, we computed a coefficient of variation (CoV) of the concentration distributions within each acinar model. The slope in the semilog plot of log(CoV) vs. time was proportional to the ADCsec generated by the internal model structure, provided that the outer model boundaries were similar across all models (i.e., similar cumulative cross section vs. average path length). The simulations revealed an ADCsec that amounted to ∼1% of free diffusion in the trumpet model of the acinus, i.e., corresponding to free diffusion within the acinar geometric boundaries. Our simulations show that for initial conditions corresponding to those used in MRI experiments, intra-acinar branching introduces a dramatic diffusion delay, comparable to what is observed experimentally.
29
Sochos, Antigonos. "Attachment and representational change in cognitive analytic therapy: Developing a taxonomy." Counselling Psychology Review 20, no. 4 (2005): 15–32. http://dx.doi.org/10.53841/bpscpr.2005.20.4.15.
Full textAbstract:
A number of studies suggest that the couple relationship is a crucial aspect of the individual’s supportive network, playing an important role in the maintenance of mental health and the recovery from psychological disorder. The aim of this study was to investigate how Cognitive Analytic Therapy may change the patients’ understandings of their couple relationships and, possibly, the relationships themselves. Eleven outpatients presenting mostly with neurotic and personality disorders were interviewed before and after treatment about their current couple relationships, while clinical improvement was also assessed on a number of scales. A qualitative analysis was conducted on the patients’ accounts, revealing that the patients experienced their interpersonal space as being defined by three dichotomies: self vs. other, autonomy vs. relatedness, and dependent vs. depended-on positions. Moreover, the patients’ perception of autonomy tended to change in reference to the dependent position, while that of relatedness did so in reference to the depended-on. In addition, post-therapy changes regarding autonomy were asymmetrical, with the self being presentedas strengthened and the other as relatively weakened; in contrast, changes regarding relatedness were symmetrical, presenting both partners either as more, or as less emotionally available. On the basis of differences in change, three types of patients were identified. As the findings were considered within the framework of attachment theory three research questions were formulated for further investigation: (a) the patients’ subjective experience may have revealed information about their deeper attachment representations; (b) changes in that experience may have suggested shifts in the patients’ security of attachment; and (c) different types of change in that experience may have suggested diverse pathways through which shifts in attachment security may have been attained.
30
Thomberg, Thomas, Alar Janes, and Enn Lust. "Asymmetrical Supercapacitor Based on Iodide Ion Containing Ionic Liquid Mixture." ECS Meeting Abstracts MA2024-02, no. 6 (2024): 682. https://doi.org/10.1149/ma2024-026682mtgabs.
Full textAbstract:
The increased global energy demand and environmental pollution require energy generated from renewable energy sources such as wind, solar, etc. As the adoption of these energy resources increases, developing different energy storage systems becomes important. The applicability of room-temperature ionic liquids (RTILs) as electrolytes for supercapacitors (SCs) and batteries has been discussed in many papers. RTILs have lower conductivity and higher viscosity; thus, they have narrower low-temperature operation limits compared to aqueous and non-aqueous electrolytes. However, compared with volatile aqueous and organic electrolytes, RTILs are much safer in SCs applications. To improve the power and energy densities of SCs, various mixtures of ionic liquids have been investigated, including systems of 1-ethyl-3-methylimidazolium tetrafluoroborate (EMImBF4) with bromide ion addition on carbon cloth1, EMImBF4 with iodide ion addition on Bi(111) electrode2 and D-glucose derived activated carbon (GDAC)3. However, in studies1,3 the capacitance and ideal polarizability of positively and negatively charged carbon cloth and GDAC electrodes were not taken into account, limiting the overall energy storage capability, efficiency, and cycle life of these systems. Therefore, characterization of these materials-based SCs in three- and two-electrode configurations are inevitable to overcome these mentioned shortcomings4. In the present research EMImBF4 with addition of 5 wt% 1-ethyl-3-methylimidazolium iodide (EMImI) was selected to study the influence of iodide anions addition on the electrochemical performance of micro- and mesoporous carbon material-based SC system4. Based on electrochemical data established by cyclic voltammetry, electrochemical impedance spectroscopy, constant current charge/discharge, and constant power discharge methods, the asymmetrical SC with ionic liquid mixture compared to the symmetrical SC with neat EMImBF4 demonstrated increase in cell capacitance about 5 F g-1 (33 F g-1 vs 27 F g-1 in cell potential range of 2.4 V) and specific energy about 3.5 W h kg-1 (28.1 W h kg-1 vs 24.4 W h kg-1 in cell potential range of 2.4 V). However, the ideal polarizability region, i.e., electrochemical stability of the iodide ion containing ionic liquid mixture-based SC is somewhat lower as well as specific adsorption and partial charge transfer is not fully reversible leading to the lower coulombic and energy efficiency values4. Acknowledgments: This research was supported by the EU through the European Regional Development Fund under project TK141, "Advanced materials and high-technology devices for energy recuperation systems" (2014–2020.4.01.15–0011) and TK210, “Estonian Centre of Excellence in Green Hydrogen and Sustainable Energetics”, Institutional Research grant IUT20–13, European Spallation Source: Estonian Partition in ESS Instrument design, development and building and application for science research project SLOKT12026T and by Estonian Research Council grants PUT1033, PUT55, and PRG676. References: 1S. Yamazaki, T. Ito, M. Yamagata, M. Ishikawa, Electrochim. Acta, 2012, 86, 294-297. 2L. Siinor, C. Siimenson, K. Lust and E. Lust, Electrochem. Commun, 2013, 35, 5-7. 3T. Thomberg, T. Tooming, L. Siinor, K. Tõnurist, A. Jänes, E. Lust, J. Electrochem. Soc., 2014, 160(3), A222-227. 4T. Thomberg, E. Lust, A. Jänes, J. Energy. Storage, 2020, 32, 101845.
31
Zhang, Yue, Jamie Soper, Christine M. Lohse, Scott D. Z. Eggers, Kenton R. Kaufman, and Devin L. McCaslin. "Agreement between the Skull Vibration-Induced Nystagmus Test and Semicircular Canal and Otolith Asymmetry." Journal of the American Academy of Audiology 32, no. 05 (2021): 283–89. http://dx.doi.org/10.1055/s-0041-1723039.
Full textAbstract:
Abstract Background How significant asymmetries in otolith organ function in the presence of symmetrical and asymmetrical semicircular canal function influence skull vibration-induced nystagmus testing (SVINT) has not been well described. Purpose The aim of the study is to examine the agreement between SVINT and caloric testing, ocular vestibular-evoked myogenic potentials (oVEMP), and cervical vestibular-evoked myogenic potentials (cVEMP) for detecting asymmetric vestibular function. Research Design This is a retrospective study of patients presenting with the chief complaint of vertigo, dizziness, or imbalance. Study Sample A total of 812 patients were studied with a median age at testing of 59 years (interquartile range 46–70; range 18–93) and included 475 (59%) women. Intervention Either the monothermal warm caloric test or alternate binaural bithermal caloric test, oVEMP, and cVEMP tests were administered to all patients. All patients underwent the SVINT prior to vestibular laboratory testing. Data Collection and Analysis Agreement between tests categorized as normal versus abnormal was summarized using percent concordance (PC). Sensitivity and specificity values were calculated for SVINT compared with other tests of vestibular function. Results There was higher agreement between ipsilateral and contralateral SVINT with the caloric test (PC = 80% and 81%, respectively) compared with oVEMP (PC = 63% and 64%, respectively) and cVEMP (PC = 76% and 78%, respectively). Ipsilateral and contralateral SVINT showed higher sensitivity for the caloric test (sensitivity = 47% and 36%, respectively) compared with oVEMP (sensitivity = 26% and 21%, respectively), or cVEMP (sensitivity = 33% vs. 27%, respectively). Specificity of SVINT was high (>80%) for all assessments of vestibular function. Conclusion The presence of SVIN is a useful indicator of the asymmetry of vestibular function between the two ears when making judgments about semicircular canal asymmetry but is less sensitive to asymmetries in otolith organ function.
32
Azaad, Shaheed, and Simon M. Laham. "Sidestepping spatial confounds in object-based correspondence effects: The Bimanual Affordance Task (BMAT)." Quarterly Journal of Experimental Psychology 72, no. 11 (2019): 2605–13. http://dx.doi.org/10.1177/1747021819852216.
Full textAbstract:
Tucker and Ellis found that when participants made left/right button-presses to indicate whether objects were upright or inverted, responses were faster when the response hand aligned with the task-irrelevant handle orientation of the object. The effect of handle orientation on response times has been interpreted as evidence that individuals perceive grasp affordances when viewing briefly presented objects, which in turn activate grasp-related motor systems. Although the effect of handle alignment has since been replicated, there remains doubt regarding the extent to which the effect is indeed driven by affordance perception. Objects that feature in affordance-compatibility paradigms are asymmetrical and have laterally protruding handles (e.g., mugs) and thus confound spatial and affordance properties. Research has attempted to disentangle spatial compatibility and affordance effects with varying results. In this study, we present a novel paradigm with which to study affordance perception while sidestepping spatial confounds. We use the Bimanual Affordance Task (BMAT) to test whether object affordances in symmetrical objects facilitate response times. Participants ( N = 36) used one of three (left unimanual/right unimanual/bimanual) responses to indicate the colour of presented objects. Objects afforded either a unimanual (e.g., handbag) or a bimanual (e.g., laundry hamper) grasp. Responses were faster when the afforded grasp corresponded with the response type (unimanual vs. bimanual), suggesting that affordance effects exist independent of spatial compatibility.
33
Sukumaran, Vinoshini Nair, Khairunnisa Abdul Rashid, Suhaila Abdullah, Kartini Rahmat, Khairul Azmi Abd Kadir, and Norlisah Ramli. "A comparison of infectious and autoimmune meningoencephalitis: Clinical presentation, biochemical markers and MRI findings." Neurology Asia 29, no. 3 (2024): 795–804. http://dx.doi.org/10.54029/2024miw.
Full textAbstract:
Objective: This study investigates distinguishing patterns in lesion distribution, relevant clinical presentation and biochemical markers in MRI to differentiate infective encephalitis (IE) and autoimmune encephalitis (AE). Methods: Retrospective study of adult patients with a confirmed diagnosis of IE and AE admitted to the Neurology unit from January 2012 to December 2020 with MRI Brain. Selected cases with confirmed IE (according to the 2013 Infective Encephalitis Consortium diagnostic criteria) or antibody-positive AE (detection of Neuronal auto-antibody from blood or CSF), coupled by clinical presentation. MRI brain lesion distribution, lobar involvement, enhancement, haemorrhage, vasculopathy and atrophy were analysed. Results: Forty-seven patients (21 IE and 26 AE, respectively) were selected. IE group are older (48.0 ± 16.81) compared to AE (28.4 ± 14.10). Fever and vomiting were significant in IE (p<0.001), whereas psychosis, seizure, movement disorder, and tumour (ovarian teratoma) were significant in the AE cohort. Cerebrospinal fluid (CSF) analysis showed elevated leucocytes with polymorphism and high protein levels in IE (2.081 g/L ± 2.93 vs AE (0.352g/L ± 0.18). MR imaging detected abnormal findings in 61.9% of cases with infectious encephalitis (IE), while 76.9% of cases with autoimmune encephalitis (AE) exhibited normal MRI results. Asymmetrical lesions and inferior frontal lobe distribution (57.1%) were significantly prevalent in IE (p<0.05). Enhancement patterns and haemorrhage were rarely observed in AE patients. Conclusion: IE presented at an older age, with the majority having MRI findings such as asymmetrical lesions, leptomeningeal enhancement, and involvement of medial temporal, hippocampus and inferior frontal cortex. IE clinically presents with fever, vomiting, and elevated CSF leucocytes and protein levels. AE presents at a younger age with seizure, psychosis, movement disorder, tumour (ovarian teratoma). Fewer AE have MRI findings, and if present, tend to be symmetrical in distribution. Lobar involvement in the inferior frontal was the MRI feature that significantly favoured the diagnosis of IE compared to AE. IE and AE have distinct clinical, biochemical, and MRI abnormalities that can be discriminated between the 2 entities.
34
Zhao, B., W. Wan, L. Liu, et al. "Features of annual and semiannual variations derived from the global ionospheric maps of total electron content." Annales Geophysicae 25, no. 12 (2007): 2513–27. http://dx.doi.org/10.5194/angeo-25-2513-2007.
Full textAbstract:
Abstract. In the present work we use the NASA-JPL global ionospheric maps of total electron content (TEC), firstly to construct TEC maps (TEC vs. magnetic local time MLT, and magnetic latitude MLAT) in the interval from 1999 to 2005. These TEC maps were, in turn, used to estimate the annual-to-mean amplitude ratio, A1, and the semiannual-to-mean amplitude ratio, A2, as well as the latitudinal symmetrical and asymmetrical parts, A' and A" of A1. Thus, we investigated in detail the TEC climatology from maps of these indices, with an emphasis on the quantitative presentation for local time and latitudinal changes in the seasonal, annual and semiannual anomalies of the ionospheric TEC. Then we took the TEC value at 14:00 LT to examine various anomalies at a global scale following the same procedure. Results reveal similar features appearing in NmF2, such as that the seasonal anomaly is more significant in the near-pole regions than in the far-pole regions and the reverse is true for the semiannual anomaly; the winter anomaly has least a chance to be observed at the South America and South Pacific areas. The most impressive feature is that the equinoctial asymmetry is most prominent at the East Asian and South Australian areas. Through the analysis of the TIMED GUVI columnar [O/N2] data, we have investigated to what extent the seasonal, annual and semiannual variations can be explained by their counterparts in [O/N2]. Results revealed that the [O/N2] variation is a major contributor to the daytime winter anomaly of TEC, and it also contributes to some of the semiannual and annual anomalies. The contribution to the anomalies unexplained by the [O/N2] data could possibly be due to the dynamics associated with thermospheric winds and electric fields.
35
Özdemir, Mustafa, Onur Taydaş, and Mehmet Ali Durmuş. "Comparison of the Symmetrik-Tip vs Split-Tip Tunneled Hemodialysis Catheter: A Retrospective Randomized Trial." Genel Tıp Dergisi 34, no. 6 (2024): 772–76. https://doi.org/10.54005/geneltip.1461139.
Full textAbstract:
ABSTRACT Background: Despite not being the primary choice for vascular access in hemodialysis patients, permanent tunneled catheters are commonly utilized but exhibit elevated rates of complications and dysfunction. This study retrospectively compares the dysfunction durations of symmetric and asymmetric-tipped permanent hemodialysis catheters. Materials and Methods: A total of 307 patients who underwent the placement of either symmetric or asymmetric-tipped permanent tunneled catheters at our interventional radiology clinic between 2021 and 2023 were included. The study aimed to examine the dysfunction rates associated with each type of catheter. Results: Among the included patients, 157 were male (51.1%), and 150 were female (48.9%), with an average age of 65.2±12.2 years. The catheters were predominantly placed in the right jugular in 242 patients (78.8%), followed by the left jugular in 59 patients (19.2%), and femoral placement in 6 patients (2%). Symmetric-tipped catheters were employed in 161 patients (52.4%), while asymmetric-tipped catheters were utilized in 146 patients (47.6%). During follow-up, the catheter dysfunction rate was significantly higher in split-tip catheters than in symmetrical-tip catheters (P< 0.0001). Conclusion: The study revealed a statistically significant increase in catheter dysfunction for the asymmetric-tipped catheter type.
36
Yang, Chaoyi, Runna He, Qiqi Sun, Yanli Chen, and Jianzhuang Jiang. "Crown-ether-substituted asymmetric phthalocyanine derivatives/CdS self-assembled hybrid films with an unprecedented high response toward NO2." Journal of Porphyrins and Phthalocyanines 23, no. 04n05 (2019): 507–17. http://dx.doi.org/10.1142/s1088424619500391.
Full textAbstract:
Two asymmetrical amphiphilic phthalocyanines simultaneously containing hydrophobic alkoxy and hydrophilic 15-crown-5-ether substituents at the phthalocyanine periphery H2{Pc(15C5)3[(OC8H[Formula: see text]]}(Pc-1) and H2{Pc(15C5)[(OC8H[Formula: see text]]}(Pc-2) and their symmetrical analogue H2[Pc(OC8H[Formula: see text]] (Pc-3) have been synthesized and characterized. The Pc-n/CdS ([Formula: see text] 1, 2 and 3, respectively) hybrid films are obtained successfully via a simple quasi-Langmuir–Shäfer (QLS) method using H2S-vapor annealing over the Pc-n/Cd[Formula: see text] self-assembled film formed at the interface of the air/CdCl2 aqueous solution. The film-structure and properties of both the hybrid Pc-n/CdS and pure Pc-n films are comparatively studied by a wide range of methods including UV-vis, polarized UV-vis, XRD, SEM and I–V measurements. Experimental results exhibit a slipped co-facial stacking mode in an “edge-on” conformation ([Formula: see text]-type aggregate) formed for the phthalocyanine molecules in both pure Pc-n films and the corresponding Pc-n/CdS hybrid films, with increasing intermolecular [Formula: see text]–[Formula: see text] interactions in the order of Pc-n <Pc-n/CdS and Pc-3/CdS <Pc-2/CdS <Pc-1/CdS, respectively. Accordingly, film-microstructures, crystallinity and conductivity are effectively improved by introducing CdS nanoparticles into the 15-crown-5-substituented phthalocyanines forming Pc-1/CdS and Pc-2/CdS hybrid films. These render excellent sensing performance towards NO2 in the 0.05–2.5 ppm range within a fast dynamic exposure period of 30 s. Strikingly, Pc-1/CdS hybrid film presents an unprecedented high sensitivity of 157.3%.ppm[Formula: see text] vs. very low NO2 concentration range of 0.05˜0.25 ppm, achieving one of the best room temperature sensing performances in terms of high sensitivity, rapid responsibility and low detection limit among self-assembled film-based NO2 sensors.
37
Perros, P., M. P. Žarković, G. C. Panagiotou, et al. "Asymmetry indicates more severe and active disease in Graves’ orbitopathy: results from a prospective cross-sectional multicentre study." Journal of Endocrinological Investigation 43, no. 12 (2020): 1717–22. http://dx.doi.org/10.1007/s40618-020-01258-w.
Full textAbstract:
Abstract Purpose Patients with Graves’ orbitopathy can present with asymmetric disease. The aim of this study was to identify clinical characteristics that distinguish asymmetric from unilateral and symmetric Graves’ orbitopathy. Methods This was a multi-centre study of new referrals to 13 European Group on Graves’ Orbitopathy (EUGOGO) tertiary centres. New patients presenting over a 4 month period with a diagnosis of Graves’ orbitopathy were included. Patient demographics were collected and a clinical examination was performed based on a previously published protocol. Patients were categorized as having asymmetric, symmetric, and unilateral Graves’ orbitopathy. The distribution of clinical characteristics among the three groups was documented. Results The asymmetric group (n = 83), was older than the symmetric (n = 157) group [mean age 50.9 years (SD 13.9) vs 45.8 (SD 13.5), p = 0.019], had a lower female to male ratio than the symmetric and unilateral (n = 29) groups (1.6 vs 5.0 vs 8.7, p < 0.001), had more active disease than the symmetric and unilateral groups [mean linical Activity Score 3.0 (SD 1.6) vs 1.7 (SD 1.7), p < 0.001 vs 1.3 (SD 1.4), p < 0.001] and significantly more severe disease than the symmetric and unilateral groups, as measured by the Total Eye Score [mean 8.8 (SD 6.6) vs 5.3 (SD 4.4), p < 0.001, vs 2.7 (SD 2.1), p < 0.001]. Conclusion Older age, lower female to male ratio, more severe, and more active disease cluster around asymmetric Graves’ orbitopathy. Asymmetry appears to be a marker of more severe and more active disease than other presentations. This simple clinical parameter present at first presentation to tertiary centres may be valuable to clinicians who manage such patients.
38
Pulyalina, Alexandra, Maksim Tataurov, Ilya Faykov, Valeriia Rostovtseva, and Galina Polotskaya. "Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation." Symmetry 12, no. 3 (2020): 436. http://dx.doi.org/10.3390/sym12030436.
Full textAbstract:
Membrane properties are determined by their morphology, which may be symmetric (dense) or asymmetric (dense/porous). Two membrane types based on the poly[(4,4′-oxydiphenylene)pyromelliteimide] (symmetric dense and asymmetric dense/porous) were prepared for a comparative study of morphology, physical properties, and transport characteristics in the pervaporation of methanol/MTBE mixture over a wide range of concentrations including the azeotropic composition. The asymmetric membrane is a good example of improving the transport properties of the polyimide by creating structure composed of a thin dense top layer on the surface of sponge-like microporous substrate. It was found that the use of the asymmetric membrane allows increasing the total flux in separation of azeotropic mixture by 15 times as compared with the dense membrane.
39
Mr., Anurag Rawal, Gaurav Mr., Hitesh Khanna Mr., and Gaganjot Kaur Prof. "Cryptography: Symmetric vs Asymmetric Encryption." Journal of Embedded Systems and Processing 3, no. 3 (2018): 1–5. https://doi.org/10.5281/zenodo.1465672.
Full textAbstract:
<em>With the arrival and outbreak of high speed internet, www (World Wide Web) and growth of social media, online transaction, application and business, organization across the globe produce too much amount of data every second. Data Security is the most basic and extreme measures to ensure secure passage of information through internet. As the number of user’s increases rapidly throughout the globe tremendously which directly entice cracker for doing cyber-attack. Moreover data security is becoming necessity as we are heading towards digital globalization. In this paper we have discuss the 2 types of encryption i.e., Symmetric and Asymmetric. We briefly explain them how these encryption techniques work and in the end explain which one of these techniques is best and why.</em>
40
Ruiz-Moreno, José M., Mariluz Puertas, Ignacio Flores-Moreno, Elena Almazán-Alonso, María García-Zamora, and Jorge Ruiz-Medrano. "Analysis of Bilaterality and Symmetry of Posterior Staphyloma in High Myopia." Diagnostics 13, no. 16 (2023): 2680. http://dx.doi.org/10.3390/diagnostics13162680.
Full textAbstract:
The purpose of this study was to examine bilaterality and symmetry of posterior staphyloma (PS) in high myopic eyes. Methods: This cross-sectional and non-interventional study assessed 473 high myopic eyes [axial length (AL) ≥ 26 mm] of 259 patients. Patients underwent an ophthalmological examination including multimodal-imaging and myopic maculopathy grading according to Atrophic/Tractional/Neovascular (ATN) system, presence and subtype of PS, and severe pathologic myopia (PM). Bilaterality of PS and subtype’s symmetry between eyes of the same patient was assessed. Four groups were analyzed: (1) bilateral vs. unilateral PS’s eyes. Within bilateral group, symmetric vs. asymmetric subtypes according to (2) Curtin’s classification, (3) Ohno-Matsui’s classification, and (4) primary/compound subtypes. Results: Out of the total, 334 myopic eyes of 167 patients were included. The 92.8% (n = 310/334) of the eyes presented PS and was bilateral in 85.6% (n = 143/167) of the patients. Bilateral eyes showed significantly (p < 0.01) greater AL, severe PM, A and N components vs. unilateral PS. AL-difference between both eyes was greater in unilateral PS (p < 0.01). Among bilateral PS, the subtype was symmetric in 79 (55.2%), 84 (58.7%), and 115 (80.4%) patients according to Curtin’s classification, Ohno-Matsui’s classification, and primary/compound; respectively. The asymmetric group presented worse best-corrected visual acuity (p < 0.01), higher AL (p < 0.01), incidence of PM, and severe PM (p < 0.05). Conclusions: PS was bilateral in most of the patients without clinical differences between both eyes, being symmetrical in more than half of bilateral cases. Patients with bilateral PS showed higher myopic maculopathy, AL, and incidence of severe PM than unilateral PS.
41
García de Oteyza, Gonzalo, Juan Álvarez de Toledo, Rafael I. Barraquer, and Sabine Kling. "Localized Refractive Changes Induced by Symmetric and Progressive Asymmetric Intracorneal Ring Segments Assessed with a 3D Finite-Element Model." Bioengineering 10, no. 9 (2023): 1014. http://dx.doi.org/10.3390/bioengineering10091014.
Full textAbstract:
To build a representative 3D finite element model (FEM) for intracorneal ring segment (ICRS) implantation and to investigate localized optical changes induced by different ICRS geometries, a hyperelastic shell FEM was developed to compare the effect of symmetric and progressive asymmetric ICRS designs in a generic healthy and asymmetric keratoconic (KC) cornea. The resulting deformed geometry was assessed in terms of average curvature via a biconic fit, sagittal curvature (K), and optical aberrations via Zernike polynomials. The sagittal curvature map showed a locally restricted flattening interior to the ring (Kmax −11 to −25 dpt) and, in the KC cornea, an additional local steepening on the opposite half of the cornea (Kmax up to +1.9 dpt). Considering the optical aberrations present in the model of the KC cornea, the progressive ICRS corrected vertical coma (−3.42 vs. −3.13 µm); horizontal coma (−0.67 vs. 0.36 µm); and defocus (2.90 vs. 2.75 µm), oblique trefoil (−0.54 vs. −0.08 µm), and oblique secondary astigmatism (0.48 vs. −0.09 µm) aberrations stronger than the symmetric ICRS. Customized ICRS designs inspired by the underlying KC phenotype have the potential to achieve more tailored refractive corrections, particularly in asymmetric keratoconus patterns.
42
Cai, G., M. G. van Vledder, I. R. Kamel, et al. "Preoperative chemotherapy in patients undergoing resection of colorectal liver metastases: Assessment of pattern of tumor response using CT registration imaging." Journal of Clinical Oncology 29, no. 4_suppl (2011): 252. http://dx.doi.org/10.1200/jco.2011.29.4_suppl.252.
Full textAbstract:
252 Background: A significant radiologic response from preoperative chemotherapy may successfully convert some unresectable colorectal liver metastases (CRLM) to resectable disease. Understanding the pattern of tumor shrinkage in relation to the hepatic structures such as the liver capsule and vascular pedicles is important. We sought to determine the spatial relationship between individual liver metastases before and after chemotherapy, as well as to adjacent intrahepatic structures. Methods: Using nonrigid registration of temporally separated CT scans before and after preoperative chemotherapy, 42 CRLM were evaluated in 27 patients with radiologic partial response. The response pattern was determined by independent observers and scored as: (1) asymmetric toward the liver periphery, (2) asymmetric toward the liver center, and (3) symmetric response. In addition, the shrinking pattern was characterized in relation to the liver capsule and major vascular pedicles, as well as clinicopathologic features. Results: Among the tumors evaluated, 38/42 lesions (90%) responded asymmetrically, with only 10% undergoing a symmetric contraction. 43% shrank toward the periphery and 47% centrally. Tumors in proximity to the liver capsule were more likely to respond peripherally compared to deeper lesions (p=0.013). Unexpectedly, R1 resection was more common in tumors with peripherally directed response vs. those with central or symmetric response (p=0.027). In addition, tumors within 5 mm of a single major vascular pedicle were more likely to shrink toward (59%) and not away from the vessel. No difference in response pattern was observed in relation to tumor size, chemotherapy regimen, or presence of steatosis. Conclusions: Tumors were found to respond asymmetrically in the vast majority of cases, either toward or away from the liver center. In addition, tumors in proximity to major vascular pedicles less commonly move away from these structures. These findings may have important implications when planning curative-intent resection or anticipating the ability to convert patients to resectable disease using preoperative chemotherapy. No significant financial relationships to disclose.
43
Wohrer, Stefan, Keegan Rowe, Heidi Mader, et al. "Stromal Cell Regulation of Murine Hematopoietic Stem Cells." Blood 116, no. 21 (2010): 1566. http://dx.doi.org/10.1182/blood.v116.21.1566.1566.
Full textAbstract:
Abstract Abstract 1566 Recent advances in purifying murine hematopoietic stem cells (HSCs) to near homogeneity (>20%) have made it possible to analyze their in vivo clonal growth, self-renewal and differentiation properties over prolonged periods and the effects of various manipulations on these key functional parameters. However, conditions that allow genetically unaltered HSCs to maintain their original functional properties over equivalent periods of prolonged proliferation in vitro have not yet been identified. Since initial studies showed that the UG26 stromal cell could support murine HSC maintenance for limited periods, we first asked whether the addition of cytokines that also maintain HSCs for short periods might synergize with UG26 cells to enable HSC expansion to occur. Limiting dilution transplants that used a 6-month read-out of reconstituted blood elements (>1%) showed that the addition of 100 ng/ml Steel Factor (SF) and 20 ng/ml IL-11 to cultures containing UG26 cells and single purified (50%) HSCs (EPCR+CD150+CD48-, ESLAM cells) consistently stimulated a 3–5 fold HSC expansion after 7 days (3 expts). Furthermore, the effect of the UG26 cells could be replaced by UG26 conditioned medium (CM) and, in the presence of the CM+SF/IL-11 cocktail, the HSCs showed sustained longterm in vivo lympho-myeloid reconstituting activity in both primary and secondary recipients. Under these conditions, every ESLAM cell isolated proliferated several times within 7 days, but individual analysis of paired daughter cells showed that most first divisions (13/42) were, nevertheless, asymmetrical in terms of the numbers and types of different lineages produced by each of the 2 daughter cells for at least 4 months, although occasional evidence of symmetry was obtained (2/42 divisions). Interestingly, these first divisions showed a biphasic curve with 75% of the cells dividing before and 25% after 48 hours - the late dividers being more highly enriched for HSCs (95% vs 20%). We next asked whether TGF-β might be an important factor in UG26 CM, since UG26 cells exert a strong cell cycle inhibitory effect, and produce abundant TGF-beta. Accordingly, we next analyzed the effect of adding a neutralizing anti-TGF-β antibody or replacing the CM with TGF-β in the same type of single HSC cultures by tracking the survival and division kinetics of the cells as well as measuring the repopulating activity of their in vitro progeny present after 7 days. Strikingly, the addition of anti-TGF-β to the CM+SF/IL-11 supplemented HSC cultures eliminated the late wave of first cell divisions and caused an accompanying loss of myeloid reconstituting ability in recipients transplanted with the cultured cells. Conversely, replacement of the CM with TGF-β restored a biphasic division kinetics curve to cultures supplemented with SF/IL-11 but no CM. However, this did not protect against the early 50% loss of cells by apoptosis. These findings provide evidence of a new role of TGF-β in preserving the integrity of HSC functionality in vitro, but suggest a requirement for other types of factors released by certain stromal cells to achieve sustained symmetrical HSC self-renewal in vitro. Disclosures: No relevant conflicts of interest to declare.
44
P. K, Noushad. "Impact of Modes, and Media of CSR Communication on Stakeholder Engagement." Journal of Management and Entrepreneurship 17, no. 04 (2023): 54–67. https://doi.org/10.70906/20231704054067.
Full textAbstract:
Recently, companies have begun to place increased value on communicating their socially responsible initiatives to the stakeholders, as CSR communication is considered one of the essential elements of gaining business benefits from such efforts (Oh & Ki, 2019; Dawkins, 2004). The current study examines how various modes and media used for communicating CSR efforts of an organization influence stakeholder engagement by employing 2 modes (of CSR communication: symmetric vs. asymmetric) × 2 media (for CSR communication: social media vs. corporate websites) between-subject experiments. Official social media pages and corporate websites of a fictitious company through which CSR information is communicated employing symmetric and asymmetric modes were created and presented to a sample of 160 post-graduate students of an Indian university. The results indicate that the symmetric mode of CSR communication reports higher stakeholder engagement than the asymmetric mode of CSR communication. It is also reported that CSR creates better stakeholder engagement than corporate websites when communicated through the company's official social media pages. This research contributes to the CSR communication and marketing literature on how to ensure the engagement of the stakeholders, particularly consumers, in communicating the CSR initiatives of an organization, considering various modes and media of communicating CSR initiatives.
45
Yu, Baojun, Hangjun Xu, and Feng Dong. "Vertical vs. Horizontal: How Strategic Alliance Type Influence Firm Performance?" Sustainability 11, no. 23 (2019): 6594. http://dx.doi.org/10.3390/su11236594.
Full textAbstract:
Strategic alliances have become a key focus in the management and marketing literature. However, much of the previous research in this area has focused on the antecedents and accounting effects of strategic alliances. There is an opportunity to more closely examine how alliance types might influence the public equity markets. As a result, this study summarizes the literature for the theoretical foundation of strategic alliances to increase the understanding of the two main types of strategic alliances, that is industry scope (vertical vs. horizontal alliances) and size scope (asymmetric vs. symmetric alliances). Then, this study proposes a conceptual framework to examine the main and relative effects between different types of strategic alliances and firm performance. Using the Bloomberg Mergers and Acquisitions (M&A) database from 1 January 2010 to 1 January 2016, we find that vertical symmetric alliances gain more abnormal returns than others. Finally, implications and limitations are also discussed.
46
Bonavolontà, Valerio, Maria Chiara Gallotta, Giovanna Zimatore, et al. "Chronic Effects of Asymmetric and Symmetric Sport Load in Varsity Athletes across a Six Month Sport Season." International Journal of Environmental Research and Public Health 20, no. 3 (2023): 2186. http://dx.doi.org/10.3390/ijerph20032186.
Full textAbstract:
The relation between specific sport practice and possible spine modifications is unclear. The aim of this study was to investigate the effects of different sports on the spine in adult varsity athletes across a six month sports season. Forty-four athletes (24.5 ± 3 years) were divided into two groups according to the typology of the sport practiced: the symmetric sports group (S, 22 athletes: track and field running, n = 14; cycling, n = 8), and the asymmetric sports group (A, 22 athletes: tennis, n = 22). The participants’ spines were evaluated with Formetric® 4D rasterstereographic analysis at the beginning (BL), in the middle (INT), and at the end (FIN) of the season. Twenty-five parameters were measured in an average 4D modality. The results showed that the intervention factor (BL vs. FIN) had a significant effect on dimple distance (p < 0.05) and on left lateral deviation (BL vs. FIN and INT vs. FIN, p < 0.01 and p < 0.01, respectively). Statistical differences were found for the sport typology factor for pelvic antero-retroversion and right lateral deviation. For left lateral deviation, no modulation was found for the sport typology. Asymmetric versus symmetric sport loads showed small statistical differences in a non-professional sample of adult athletes. The practice of asymmetric sports should also be encouraged without exceeding the total number of hours per week.
47
Li, Hao, Wenwen He, Donglin Guo, et al. "Correction of Asymmetric Bowtie Corneal Astigmatism with a Toric Intraocular Lens: Outcomes and Accuracy of Measurement Modes." Journal of Personalized Medicine 13, no. 3 (2023): 401. http://dx.doi.org/10.3390/jpm13030401.
Full textAbstract:
The outcomes of toric intraocular lens (IOL) implantation in correcting asymmetric bowtie corneal astigmatism remain uncertain. The accurate measurement of corneal astigmatism is essential for surgical planning. In this prospective cohort study, patients with asymmetric or symmetric bowtie corneal astigmatism who underwent toric IOL implantation were recruited. Preoperative corneal astigmatism was measured with an IOLMaster and Pentacam (including the simulated keratometry (SimK), total corneal refractive power (TCRP), and wavefront aberration (WFA) modes). At 3 months after surgery, the refractive outcomes and residual astigmatic refractive errors were compared with patients with symmetric bowtie astigmatism. The prediction errors (the differences between the calculated actual corneal astigmatism and the measured corneal astigmatism) were compared among the different measurement modes in the asymmetric group. There were no differences in residual astigmatism between the asymmetric and symmetric groups. However, the mean absolute residual astigmatic refractive error was greater in the asymmetric group than in the symmetric group (0.72 ± 0.42 D vs. 0.53 ± 0.24 D, p = 0.043). In the asymmetric group, the mean absolute prediction errors for the IOLMaster, SimK, TCRP and WFA modes were 0.53 ± 0.40, 0.56 ± 0.47, 0.68 ± 0.52, and 0.43 ± 0.40 D, respectively. The Pentacam WFA mode was the most accurate mode (p < 0.05). The absolute prediction error of the WFA mode was positively correlated with the total corneal irregular astigmatism higher-order aberrations and coma (r = 0.416 and r = 0.473, respectively; both p < 0.05). Our study suggests toric IOL implantation effectively corrected asymmetric bowtie corneal astigmatism. The Pentacam WFA mode may be the most accurate measurement mode, although its accuracy decreased as asymmetry increased.
48
Zis, Panagiotis, Rodanthi Syrigou, Stella Fanouraki, et al. "Prevalence of Peripheral Neuropathy (PN) Among Patients with Asymptomatic Monoclonal Gammopathies: A Clinical & Electrophysiological Study." Blood 142, Supplement 1 (2023): 529. http://dx.doi.org/10.1182/blood-2023-180673.
Full textAbstract:
Introduction: Asymptomatic monoclonal gammopathies (MGUS, SMM or aWM) are common among adults &gt;50y. Peripheral neuropathy (PN) refers to any disorder of the peripheral nervous system including mononeuropathies, and symmetrical or asymmetrical polyneuropathy. PN is also common among individuals &gt;50y. Common risk factors include diabetes, vitamin deficiencies, alcohol, renal insufficiency, hypothyroidism, autoimmune diseases and exposure to neurotoxic medication. Epidemiological studies have shown an association between monoclonal gammopathies and PN but a mechanistic link has been established only for some (anti-MAG IgM-related PN, amyloidosis, POEMS syndrome etc). However, the true prevalence of PN among patients (pts) with monoclonal gammopathies is unknown and remains challenging to associate monoclonal gammopathy with PN. The aim of our study is to establish the prevalence of PN in a large cohort of pts with asymptomatic monoclonal gammopathy and identify potential determinants. Methods: This is an ongoing prospective, non-invasive study aiming to screen ~1500 pts with asymptomatic monoclonal gammopathies for PN. Pts under regular follow-up at the Department of Therapeutics, University of Athens, Greece are screened for neuropathic symptoms using the Michigan Neuropathy Screening Instrument (MNSI), a validated screening tool for the presence of PN that consists of 15 yes/no items. A cut off ≥ 4 has been proposed as a screening cut off in diabetic PN. All pts scoring ≥4 on MNSI and pts scoring &lt;4 but without risk factors for PN were assessed clinically and electrophysiologically (EDX) with standard nerve conduction studies (NCS), sympathetic skin response (SSR) test and - if needed - electromyography (EMG) by a specialist. NCS protocol includes assessment of the median nerve (motor and sensory), superficial radial nerve (sensory), tibial nerve (motor) and sural nerve (sensory) conduction studies. Axonal PN was diagnosed when the sural to radial ratio (SRAR) is below 0.25 and/or the sural nerve action potential is below 6μV, demyelinating PN if the EAN/PNS criteria for demyelination are fulfilled and sympathetic dysfunction when the SSR amplitude was &lt;500 uV. Results: As of to date, 320 pts (42.8% males, median 67y) with asymptomatic monoclonal gammopathy have been screened; 64.3% had a diagnosis of MGUS (72.3% IgG, 14.1% IgA, 6.3% IgM, 7.3% light chain only), 23.9% had SMM and 11.8% had aWM. Among enrolled pts, 217 (68%) had no common risk factors for PN and 82 pts (25.6%) had an MNSI score ≥4; the commonest symptoms were cramps (48.4%), weakness (26.9%) and pain when walking (26.3%). Among pts without risk factors for PN, 42 (19.4%) had an MNSI score ≥ 4 and the commonest symptoms were cramps (44.7%), pain when walking (22.1%) and weakness (21.7%) (Table 1). There was no difference in the prevalence of MNSI score ≥4 among pts with different paraprotein types. To date, 105 pts (41.9% males, median 66y) had EDX evaluation, of which 77 (73%) had no common risk factors for PN. Among the EDX evaluated pts, 23 (21.9%) had large fiber PN, 42 (40%) had sudomotor dysfunction and 53 (50.5%) had large fiber PN and/or sudomotor dysfunction. Among the cohort of pts without risk factors for PN, 13 (16.9%) had large fiber PN, 25 (32.5%) had sudomotor dysfunction and 34 (44.2%) had large fiber PN and/or sudomotor dysfunction. Nineteen pts that went through EDX were asymptomatic (MNSI=0), of those 4 (21.1%) had large fiber PN, 4 (21.1%) had sudomotor dysfunction and 7 (33.3%) had large fiber PN and/or sudomotor dysfunction. Only one patient, without other risk factors, had a demyelinating neuropathy while all other pts had a length-dependent axonal sensory or sensorimotor neuropathy. Pts with large fiber PN were older (73.7±11.4 vs 63±9.4, p&lt;0.001) but no significant differences were found regarding sex, or paraprotein or light chain type. Pts with sudomotor dysfunction were more likely to have a non-IgM monoclonal gammopathy (90.2% vs 72.6 %, p=0.029). Conclusion: Peripheral neuropathy is common in pts with monocloncal gammopathies affecting ~20% of those without any other risk factors for PN. Although most pts with PN describe mild symptoms, both large fiber PN and sudomotor dysfunction may remain completely asymptomatic. This data provides a new insight into the prevalence of PN in pts with monoclonal gammopathies with implications for future research. The study is ongoing and updated results will be presented.
49
Lefebvre, Claire. "Dominance vs. Precedence in the Double Object Construction: New Facts from Fongbe." Canadian Journal of Linguistics/Revue canadienne de linguistique 38, no. 4 (1993): 395–424. http://dx.doi.org/10.1017/s0008413100020077.
Full textAbstract:
Since the paper by Barss and Lasnik (1986), the fact that the double object construction exhibits Theme/Goal asymmetries has been the object of an important debate in the literature. The central question of this discussion is whether these asymmetries should be accounted for in terms of dominance (e.g., Larson 1988, 1990; Aoun and Li 1989; den Dikken 1991) or precedence (e.g., Barss and Lasnik 1986; Jackendoff 1990; Tremblay 1991). On the dominance account, the Goal must asymmetrically c-command the Theme (e.g., Larson 1988, 1990). On Barss and Lasnik’s account, the Goal and the Theme of the construction may symmetrically c-command each other but the Goal must precede the Theme. This proposal is captured in their definition of domain of (1986:352).
50
Gartus, Andreas, Mark Völker, and Helmut Leder. "What Experts Appreciate in Patterns: Art Expertise Modulates Preference for Asymmetric and Face-Like Patterns." Symmetry 12, no. 5 (2020): 707. http://dx.doi.org/10.3390/sym12050707.
Full textAbstract:
This study set out to investigate whether and how aesthetic evaluations of different types of symmetric, as well as abstract vs. representational patterns are modulated by art expertise. To this end, we utilized abstract asymmetric, symmetric, and “broken” patterns slightly deviating from symmetry, as well as more representational patterns resembling faces (also symmetric or broken). While it has already been shown that symmetry preference decreases with art expertise, it was still unclear whether an already established relationship between art expertise and preference for abstract over representational art can be similarly found as a preference for abstract over representational patterns, as these are non-art objects. Nevertheless, we found profound differences in aesthetic preferences between art experts and laypersons. While art experts rated asymmetric patterns higher than laypersons, as expected, they rated face-like patterns lower than laypersons. Also, laypersons rated all other types of patterns higher than asymmetric patterns, while art experts rated the other patterns similar or lower than asymmetric patterns. We found this both for liking and for interest ratings. As no differences between art experts and laypersons were found regarding memory recognition of new and old patterns, this effect is not likely due to differences in memory performance. In sum, this study further extends our knowledge about the influence of art expertise on aesthetic appreciation.