Associations Between Adolescent and Parent Media Connection and Perceptions of Emotional Climate in the Home

An overwhelming increase in technology and media use this past decade has been found to affect family relationships in various ways. Devices such as cell phones, tablets, and computers, have been found to both be the means of bringing family members closer together by communicating from a distance, while also disrupting and straining family connection, in particular the adolescent to parent relationship. Data from the Flourishing Families Project was used to analyze the varying perceptions of adolescent and parents regarding technology communication with one another and their personal perception of the emotional climate in the home. Results from this study showed no significant relationship between primary caregiver and adolescent child reports of the frequency of communication with each other through technology and their perception of their ability to express emotions in the home. Results also imply that high amounts or frequencies of adolescent and parent technology communication with one another does not predict a negative emotional climate in one’s home. Other contextual elements such as tone of voice, warmness of the parent-adolescent relationship, and other factors should be studied to understand the impact of different motives and types of communication in the home

Speaking COVID-19: supporting COVID-19 communication and engagement efforts with people from culturally and linguistically diverse communities.

BACKGROUND: Since the emergence of COVID-19, issues have been raised regarding the approach used to engage with Culturally and Linguistically Diverse (CaLD) communities during this public health crisis. This study aimed to understand the factors impacting communication and engagement efforts during the COVID-19 pandemic from the perspective of crucial CaLD community stakeholders and opinion leaders. METHODS: Forty-six semi-structured telephone interviews were undertaken with key stakeholders who have an active role (established before the pandemic) in delivering services and other social support to CaLD communities in Australia. RESULTS: Seven key themes emerged: (1) the digital divide and how to connect with people; (2) information voids being filled by international material; (3) Differentiating established with new and emerging communities' needs; (4) speaking COVID-19; (5) ineffectiveness of direct translations of English language resources; (6) coordination is needed to avoid duplication and address gaps and (7) recognising the improvements in governments' approach. CONCLUSION: Alliances must be set up that can be activated in the future to reduce issues around resource development, translation, and dissemination of messages to minimise gaps in the response. Financial assistance must be provided in a timely way to community organisations to support the development and dissemination of culturally appropriate communication materials

Methods of Increasing Net Work Output of Organic Rankine Cycles for Low-Grade Waste-Heat Recovery

An organic Rankine cycle (ORC) is a thermodynamic cycle that is particularly well-suited for waste heat recovery. It is generally employed for waste heat with temperatures in the range of 80 °C – 300 °C. When the application is strictly to convert waste heat into work with no restrictions on heat source exit temperature, thermal efficiency is not as relevant as other aspects of the cycle performance. In such an application, maximization of net power may be the objective rather than maximization of thermal efficiency. An air-cooled ORC for waste-heat conversion is studied in the present work. Two alternative cycle configurations which could increase the net power produced from a heat source with a given temperature and flow rate are proposed and analyzed. These cycle configurations are: • An ORC with two-phase flash expansion • An ORC with a zeotropic working fluid mixture (ZRC) A simplified ORC model is introduced which calculates the pinch point in the heat exchangers based on a specified minimum temperature difference. This model is used to assess the merits of each cycle configuration with respect to a baseline ORC when the finite capacity of the heat source and heat sink fluids is considered. The finite capacity of the heat sink fluid is incorporated into the model in terms of a condenser fan power requirement. Of all working fluids studied for the baseline ORC, R134a and R245fa result in the highest net power. The ORC with two-phase flash expansion offers the most improvement over the baseline cycle provided the expander can handle two-phase flow at the same isentropic efficiency as in the baseline case. Relative improvements are highest at low source temperatures. The maximum increase in net power is 84% over the baseline ORC when water is the working fluid at a source temperature of 80 °C. At low source temperatures, the improvements decrease with increasing condenser fan power requirements. The improvements of the ZRC are also higher for low heat source temperatures. The ZRC shows improvement between 20% and 40% over the baseline as long as the condenser fan power is not negligible. At the highest estimated condenser fan power, the ZRC shows up to 92% improvement at a source temperature of 100 °C, while the ORC with flash expansion is no longer beneficial. This work represents a first step toward identifying a more optimal ORC configuration for waste heat recovery. Other data, including experimental validation, operating experience, and economic analysis particular to an application will be required to support a final recommendation

Spreading of Latex Particles on a Substrate

We have investigated both experimentally and theoretically the spreading behavior of latex particles deposited on solid substrates. These particles, which are composed of cross-linked polymer chains, have an intrinsic elastic modulus. We show that the elasticity must be considered to account for the observed contact angle between the particle and the solid substrate, as measured through atomic force microscopy techniques. In particular, the work of adhesion computed within our model can be significantly larger than that from the classical Dupr\'{e} formula.Comment: 7 pages, 7 figures, to appear in Europhys. Let

Joint decoding of tandem and hybrid systems for improved keyword spotting on low resource languages

Copyright © 2015 ISCA. Keyword spotting (KWS) for low-resource languages has drawn increasing attention in recent years. The state-of-the-art KWS systems are based on lattices or Confusion Networks (CN) generated by Automatic Speech Recognition (ASR) systems. It has been shown that considerable KWS gains can be obtained by combining the keyword detection results from different forms of ASR systems, e.g., Tandem and Hybrid systems. This paper investigates an alternative combination scheme for KWS using joint decoding. This scheme treats a Tandem system and a Hybrid system as two separate streams, and makes a linear combination of individual acoustic model log-likelihoods. Joint decoding is more efficient as it requires just a single pass of decoding and a single pass of keyword search. Experiments on six Babel OP2 development languages show that joint decoding is capable of providing consistent gains over each individual system. Moreover, it is possible to efficiently rescore the joint decoding lattices with Tandem or Hybrid acoustic models, and further KWS gains can be obtained by merging the detection posting lists from the joint decoding lattices and rescored lattices

All Politics is Local: The Renminbi's Prospects as a Future Global Currency

. In this article we describe methods for improving the RWTH German speech recognizer used within the VERBMOBIL project. In particular, we present acceleration methods for the search based on both within-word and across-word phoneme models. We also study incremental methods to reduce the response time of the online speech recognizer. Finally, we present experimental off-line results for the three VERBMOBIL scenarios. We report on word error rates and real-time factors for both speaker independent and speaker dependent recognition. 1 Introduction The goal of the VERBMOBIL project is to develop a speech-to-speech translation system that performs close to real-time. In this system, speech recognition is followed by subsequent VERBMOBIL modules (like syntactic analysis and translation) which depend on the recognition result. Therefore, in this application it is particularly important to keep the recognition time as short as possible. There are VERBMOBIL modules which are capable to work ..

γ-Herpesvirus Latency Is Preferentially Maintained in Splenic Germinal Center and Memory B Cells

The γ-herpesviruses are oncogenic B cell lymphotrophic viruses that establish life-long latency in the host. Murine γ-herpesvirus 68 (MHV-68) infection of mice represents a unique system for analyzing γ-herpesvirus latency in splenic B cells at different stages of infection. After intranasal infection with MHV-68 we analyzed the establishment of latency 14 days after infection, and the maintenance of latency 3 months after infection in different purified subpopulations of B cells in the spleen. The data show that MHV-68 latency is mainly established in germinal center B cells and that long-term latency is preferentially maintained in two different subsets of isotype-switched B cells, germinal center and memory B cells. Cell cycle analysis indicates that MHV-68 is located in both cycling and resting isotype-switched B cells. Analysis of viral gene expression showed that both lytic and latent viral transcripts were differentially expressed in germinal center and memory B cells during long-term latency. Together, these observations suggested that γ-herpesviruses exploit the B cell life cycle in the spleen

Thermodynamic Comparison of Organic Rankine Cycles Employing Liquid-Flooded Expansion or a Solution Circuit

Two modifications to a conventional Organic Rankine Cycle (ORC) are investigated: an Organic Rankine Cycle with Liquid-Flooded Expansion (ORCLFE), and an Organic Rankine Cycle with Solution Circuit (ORCSC). The ORCLFE involves “flooding” the expansion device with a liquid that is in thermal equilibrium with the primary working fluid, while simultaneously expanding the primary working fluid through the same device. The ORCSC employs a zeotropic mixture consisting of two components with a large boiling point difference. The more volatile component in the vapor phase is separated from the absorbent in the liquid phase; the vapor then flows through the expansion device, whereas the liquid absorbent gives rise to a regenerative solution circuit. A thermodynamic model is used to compare these modified ORCs with conventional ORC technology for a range of working fluids including ammonia, water, CO2, acetone, pentane, R134a and R245fa. The working fluid pairs considered for the ORCSC are ammoniaewater and CO2eacetone. Based purely on thermodynamic considerations, the conventional ORC using water as the working fluid is found to be more efficient than ORCs that use other working fluids. It yields almost 65% of the Carnot efficiency for a source and sink temperature of 200C and 20C, respectively. However, the use of water requires low expander exhaust quality, large pressure ratios, and a large expander due to its low density at the expander exhaust. Thus, the practical challenges of using water as a working fluid at typical ORC input temperatures may make its use prohibitive. The ORCLFE always leads to improved cycle efficiency when compared to an ORC for a given working fluid, but it requires the use of a positive displacement expander. The ORCSC shows the lowest efficiencies for the working fluid pairs studied. There are significant practical advantages intrinsic to both the ORCLFE and the ORCSC. For example, the more isothermal expansion of the ORCLFE eliminates the concern of low expander exhaust quality for wet working fluids. The ORCSC provides the ability to use the two-phase temperature glide to match source and sink temperature profiles, facilitates intrinsic capacity control, and can have significantly lower working pressures than an ORC. Ultimately, the overall best choice of cycle and working fluid is highly application-specific and should balance the tradeoffs between efficiency and practical concerns. The thermodynamic analysis presented in this work represents a step toward identifying an optimal ORC solution for an application where the temperature glides of the source and sink fluids are sufficiently small to approximate a thermal energy reservoir