Multi-GNSS Combined Orbit and Clock Solutions at iGMAS

Global navigation services from the quad-constellation of GPS, GLONASS, BDS, and Galileo are now available. The international GNSS monitoring and assessment system (iGMAS) aims to evaluate the navigation performance of the current quad systems under a unified framework. In order to assess impact of orbit and clock errors on the positioning accuracy, the user range error (URE) is always taken as a metric by comparison with the precise products. Compared with the solutions from a single analysis center, the combined solutions derived from multiple analysis centers are characterized with robustness and reliability and preferred to be used as references to assess the performance of broadcast ephemerides. In this paper, the combination method of iGMAS orbit and clock products is described, and the performance of the combined solutions is evaluated by various means. There are different internal precisions of the combined orbit and clock for different constellations, which indicates that consistent weights should be assigned for individual constellations and analysis centers included in the combination. For BDS-3, Galileo, and GLONASS combined orbits of iGMAS, the root-mean-square error (RMSE) of 5 cm is achieved by satellite laser ranging (SLR) observations. Meanwhile, the SLR residuals are characterized with a linear pattern with respect to the position of the sun, which indicates that the solar radiation pressure (SRP) model adopted in precise orbit determination needs further improvement. The consistency between combined orbit and clock of quad-constellation is validated by precise point positioning (PPP), and the accuracies of simulated kinematic tests are 1.4, 1.2, and 2.9 cm for east, north, and up components, respectively.

Exergy Footprint Assessment of Cotton Textile Recycling to Polyethylene

Circular economy implementations tend to decrease the human pressure on the environment, but not all produce footprint reductions. That observation brings the need for tools for the evaluation of recycling processes. Based on the Exergy Footprint concept, the presented work formulates a procedure for its application to industrial chemical recycling processes. It illustrates its application in the example of cotton waste recycling. This includes the evaluation of the entire process chain of polyethylene synthesis by recycling cotton waste. The chemical recycling stages are identified and used to construct the entire flowsheet that eliminates the cotton waste and its footprints at the expense of additional exergy input. The exergy performance of the process is evaluated. The identified exergy assets and liabilities are 138 MJ/kg ethylene and 153 MJ/kg ethylene, reducing the Exergy Footprint by 75% and the greenhouse gas footprint by 43% compared to the linear pattern of polyethylene production. The exergy requirements for producing raw cotton constitute a large fraction of the liabilities, while the polyethylene degradation provides the main asset in the reduction of the Exergy Footprint.

Adaptive Non-linear Pattern Matching Automata

Efficient pattern matching is fundamental for practical term rewrite engines. By preprocessing the given patterns into a finite deterministic automaton the matching patterns can be decided in a single traversal of the relevant parts of the input term. Most automaton-based techniques are restricted to linear patterns, where each variable occurs at most once, and require an additional post-processing step to check so-called variable consistency. However, we can show that interleaving the variable consistency and pattern matching phases can reduce the number of required steps to find all matches. Therefore, we take the existing adaptive pattern matching automata as introduced by Sekar et al and extend these with consistency checks. We prove that the resulting deterministic pattern matching automaton is correct, and show several examples where some reduction can be achieved.

Transmission Dynamics and Short-Term Forecasts of COVID-19: Nepal 2020/2021

Nepal was hard hit by a second wave of COVID-19 from April–May 2021. We investigated the transmission dynamics of COVID-19 at the national and provincial levels by using data on laboratory-confirmed RT-PCR positive cases from the official national situation reports. We performed 8 week-to-week sequential forecasts of 10-days and 20-days at national level using three dynamic phenomenological growth models from 5 March 2021–22 May 2021. We also estimated effective and instantaneous reproduction numbers at national and provincial levels using established methods and evaluated the mobility trends using Google’s mobility data. Our forecast estimates indicated a declining trend of COVID-19 cases in Nepal as of June 2021. Sub-epidemic and Richards models provided reasonable short-term projections of COVID-19 cases based on standard performance metrics. There was a linear pattern in the trajectory of COVID-19 incidence during the first wave (deceleration of growth parameter (p) = 0.41–0.43, reproduction number (Rt) at 1.1 (95% CI: 1.1, 1.2)), and a sub-exponential growth pattern in the second wave (p = 0.61 (95% CI: 0.58, 0.64)) and Rt at 1.3 (95% CI: 1.3, 1.3)). Across provinces, Rt ranged from 1.2 to 1.5 during the early growth phase of the second wave. The instantaneous Rt fluctuated around 1.0 since January 2021 indicating well sustained transmission. The peak in mobility across different areas coincided with an increasing incidence trend of COVID-19. In conclusion, we found that the sub-epidemic and Richards models yielded reasonable short-terms projections of the COVID-19 trajectory in Nepal, which are useful for healthcare utilization planning.

Bilingual experiences induce dynamic structural changes to basal ganglia and the thalamus

Bilingualism has been linked to structural adaptations of subcortical brain regions that are important nodes in controlling of multiple languages. However, research on the location and extent of these adaptations has yielded variable patterns. Existing literature on bilingualism-induced brain adaptations has so far largely overseen evidence from other domains that experience-based structural neuroplasticity often triggers non-linear adaptations which follow expansion-renormalisation trajectories. Here we use generalised additive mixed models (GAMMs) to investigate the non-linear effects of quantified bilingual experiences on the basal ganglia and thalamus in a sample of bilinguals with wide range of bilingual experiences. Our results revealed that volumes of bilateral caudate nuclei and accumbens were positively related to bilingual experiences in a non-linear pattern, with increases followed by decreases, in the most experienced bilinguals, suggesting a return to baseline volume at higher levels of bilingual experience. Moreover, volumes of putamen and thalamus were positively linearly predicted by bilingual experiences. The results offer the first direct evidence that bilingualism, similarly to other cognitively demanding skills, leads to dynamic subcortical structural adaptations which can be nonlinear, in line with expansion-renormalisation models of experience-dependent neuroplasticity.

Cultural Diversity: Aesthetic Analysis of Persian and Kashmiri Paisley Ornaments

The article focuses on the origins and evolution of the Indo-Persian decoration "Paisley," as well as the use of this flowery linear pattern on textiles such as shawls, table wraps, and carpets. Paisley has gone through many stages in its evolution, including the Iranian art period and the Indo-Subcontinent phase (Mughal era). The intrinsic nature of the decoration is shown via a comparative research technique that defines Indo-Persian motif features. This article looked at the primary ornamental elements of the paisley pattern, which are floral and geometrical in nature, and how they are used in Iran and Kashmir. Finally, this article discusses how, because of Paisley's growing and blooming character, it is often a prominent ornament in the most important works of enrichment and plays an accentuation role in the decoration of textile surfaces. Paisley, a masterpiece, is especially linked to techniques for conveying the aesthetic brilliance of the pattern used in many cultures.

Malaysian and Italian trend line for Covid-19: A study on trend analysis

The first objective of this study was to evaluate trend line pattern, obtain the appropriate statistical equation model, and predict individual numbers infected by Covid-19. The second objective is to obtain a predictive equation model and forecast death rate for Malaysia and Italy. Malaysia's first positive case Covid-19 recorded January 24, 2020, consisting of three cases. Collected from January 24 to March 29, 2020. Sixty-six day-observations, based on their trend line pattern, earned special attention. Although the first positive case was identified on January 31, 2020, involving two patients. From January 31 to March 29, 2020, approximately 59 observations were collected from Italy. On 18 March 2020, the pattern will contrast with the Malaysian Movement Control Order (MCO). Malaysia and Italy collect death figures. A similar methodology will be applied to find the best-fitted model that fits both countries' death-number scenario. In Italy, the number of Covid-19-infected patients rises and meets quadratic trend line patterns. This induces extreme public distress and diversion. The quadratic trend line series analysed individual Covid-19-infected results. After March 18, 2020, it will continue to use a linear pattern. However, trend deaths also follow quadratic trend line pattern. Trend-line quadratic matched Italy's results. The quadratic line-of-trend model projection demonstrated dominance in estimating infected Covid-19. The quadratic death line from daily death collection data also showed superiority in estimating death number. The fitted quadratic model is better fitted in the Malaysian case, but the pattern shifts to linear trend line after MCO is implemented.

The Integrated Neurophysiology of Emotions during Labour and Birth: a Feminist Standpoint Exploration of the Women's Perspectives of Labour Progress

<p>Within childbirth there is a common and widely known explanation of labour and birth which describes and defines the birth process as that of stages and phases. The boundaries between the stages and phases have been determined by cervical dilatation with time parameters set to measure progress. The measurement of cervical dilatation is determined by a health professional and has resulted in an apparent inability of women to determine themselves whether they are in labour and their closeness to the impending birth. The aims of this thesis were threefold; the first was to critically examine the knowledge base of labour progress, so that the influences on knowledge development were fully understood. Through exploring the historical and theoretical development I found that the current knowledge has come from a male understanding of female anatomy and observational data constructed within a discourse of male, medical, scientific superiority. The second aim of the thesis was to explore the perspectives of women who had experienced a spontaneous labour and birth in order to determine whether the discourse of labour as stages and phases resonated with them. This leads to the third aim of providing a description of the women’s voices and perspectives based on their experiential knowledge of spontaneous labour and birth. A critical feminist ontology and feminist standpoint methodology guided the research which used in-depth one-to-one interviews with 18 women who had experienced a spontaneous labour and birth. Early thematic analysis was developed further through feedback from the participants supporting a coconstruction of knowledge. Analysis revealed that women considered the stages and phases of labour to be an abstract concept which did not resonate with their experiences of labour and birth. An important aspect of labour was having support during the process, in terms of both emotional and physical support from midwives, partners, family and friends present during the labour and birth. Women’s perceptions were dominated by their feelings and a linear pattern of feelings was discerned consistently amongst the participants. The emotions of labour were an important finding in this research but during the feedback process the women requested a scientific foundation to support the findings. I therefore explored the recent advances in theoretical understanding of the role of emotion, cognition, physiology and behaviour. Contemporary theories define emotions and neurohormones as bi-directional and intricately linked to behaviour change and physiological adaptations. I argue that the feelings women have described give an indication of an underlying hormonal influence and a directing of behaviour, necessary for labour to move towards birth. The hormones involved in labour also support maternal behaviour and attachment to the baby. I suggest a new conceptual understanding of labour as the integration of the mind, body and behaviour in which the feelings and hormones that initiate and sustain labour to birth also support the necessary adaptation and transition to becoming a mother. This integrated neurophysiologic concept will help midwives and other health professionals involved in maternity to recognise emotions as a key to understanding physiological labour and birth. It has also highlighted the importance of emotional and physical support during labour. Further research is necessary to test the hypothesis that women experience a similar range of emotions at similar times during a spontaneous labour and birth and to what extent the described emotions resonate with other women’s experiences.</p>

The Integrated Neurophysiology of Emotions during Labour and Birth: a Feminist Standpoint Exploration of the Women's Perspectives of Labour Progress

<p>Within childbirth there is a common and widely known explanation of labour and birth which describes and defines the birth process as that of stages and phases. The boundaries between the stages and phases have been determined by cervical dilatation with time parameters set to measure progress. The measurement of cervical dilatation is determined by a health professional and has resulted in an apparent inability of women to determine themselves whether they are in labour and their closeness to the impending birth. The aims of this thesis were threefold; the first was to critically examine the knowledge base of labour progress, so that the influences on knowledge development were fully understood. Through exploring the historical and theoretical development I found that the current knowledge has come from a male understanding of female anatomy and observational data constructed within a discourse of male, medical, scientific superiority. The second aim of the thesis was to explore the perspectives of women who had experienced a spontaneous labour and birth in order to determine whether the discourse of labour as stages and phases resonated with them. This leads to the third aim of providing a description of the women’s voices and perspectives based on their experiential knowledge of spontaneous labour and birth. A critical feminist ontology and feminist standpoint methodology guided the research which used in-depth one-to-one interviews with 18 women who had experienced a spontaneous labour and birth. Early thematic analysis was developed further through feedback from the participants supporting a coconstruction of knowledge. Analysis revealed that women considered the stages and phases of labour to be an abstract concept which did not resonate with their experiences of labour and birth. An important aspect of labour was having support during the process, in terms of both emotional and physical support from midwives, partners, family and friends present during the labour and birth. Women’s perceptions were dominated by their feelings and a linear pattern of feelings was discerned consistently amongst the participants. The emotions of labour were an important finding in this research but during the feedback process the women requested a scientific foundation to support the findings. I therefore explored the recent advances in theoretical understanding of the role of emotion, cognition, physiology and behaviour. Contemporary theories define emotions and neurohormones as bi-directional and intricately linked to behaviour change and physiological adaptations. I argue that the feelings women have described give an indication of an underlying hormonal influence and a directing of behaviour, necessary for labour to move towards birth. The hormones involved in labour also support maternal behaviour and attachment to the baby. I suggest a new conceptual understanding of labour as the integration of the mind, body and behaviour in which the feelings and hormones that initiate and sustain labour to birth also support the necessary adaptation and transition to becoming a mother. This integrated neurophysiologic concept will help midwives and other health professionals involved in maternity to recognise emotions as a key to understanding physiological labour and birth. It has also highlighted the importance of emotional and physical support during labour. Further research is necessary to test the hypothesis that women experience a similar range of emotions at similar times during a spontaneous labour and birth and to what extent the described emotions resonate with other women’s experiences.</p>

Effect of Chlormequat Chloride on Vegetative Growth, Photosynthetic Activities, and its Residual Dissipation in Thompson Seedless Grapevines

Chlormequat chloride is one of the important plant growth regulators which is a highly stable gibberellins biosynthesis inhibitor used to inhibit vegetative growth and cell elongation. Considering the importance of plant growth inhibitors, the present investigation was carried out to understand the effect of Chlormequat chloride with its different concentrations on vegetative growth, photosynthetic activities and its residual dissipation in Grapevines at two different locations one at Pune, Maharashtra India and second at Nashik, Maharashtra, India during the year 2018-2019. Chlormequat chloride was applied as a foliar spray, where the whole vines were sprayed at concentration of 500, 1000, 1500, 2000 and 2500 ppm with untreated control as a water spray; as a treatments with different developmental stages Viz 5th, 7th, and 15th leaf stage after foundation pruning. Morphological observations were recorded at 45 days and 90 days after foundation as well as fruit pruning. Application of Chlormequat chloride recorded reduced shoot length and Internodal distance while increased in cane diameters, leaf thickness after both the pruning’s in this investigation Photosynthetic activity, yield per vines and percent fruitfulness had significantly influenced with the application of Chlormequat chloride in grapevines. The dissipation of Chlormequat chloride was stable and indicated a non- linear pattern of degradation. Thus, implied that simple first-order kinetics might not be adequate to explain the dissipation behaviour of Chlormequat chloride in grapes.