Carleman estimates for semi-discrete parabolic operators with a discontinuous diffusion coefficient and application to controllability

In the discrete setting of one-dimensional finite-differences we prove a Carleman estimate for a semi-discretization of the parabolic operator $\partial_t-\partial_x (c\partial_x)$ where the diffusion coefficient $c$ has a jump. As a consequence of this Carleman estimate, we deduce consistent null-controllability results for classes of semi-linear parabolic equations

The uniform controllability property of semidiscrete approximations for the parabolic distributed parameter systems in Banach spaces

The problem we consider in this work is to minimize the L^q-norm (q > 2) of the semidiscrete controls. As shown in [LT06], under the main approximation assumptions that the discretized semigroup is uniformly analytic and that the degree of unboundedness of control operator is lower than 1/2, the uniform controllability property of semidiscrete approximations for the parabolic systems is achieved in L^2. In the present paper, we show that the uniform controllability property still continue to be asserted in L^q. (q > 2) even with the con- dition that the degree of unboundedness of control operator is greater than 1/2. Moreover, the minimization procedure to compute the ap- proximation controls is provided. An example of application is imple- mented for the one dimensional heat equation with Dirichlet boundary control

The effects of drying methods and storage conditions on pea seed (Pisum sativum L.) quality and the relationship between high temperature drying and maize seed (Zea mays L.) stress cracks : this thesis presented in fulfilment of the requirements for the degree of Master of Applied Science (Agricultural Engineering) in the Institute of Technology and Engineering, Massey University, New Zealand

High temperature and high relative humidity adversely affect the quality of seeds, and are features of tropical climate. Seed drying and storage are being used increasingly in developing countries to improve seed storage and quality. This study was undertaken to evaluate a range of seed drying methods and storage conditions with the view to selecting an appropriate method(s) for use in tropical countries. Pea (Pisum sativum L.) seeds at three initial seed moisture content (m.c.) of 23.8, 18.0 and 14.5% were dried to 10% seed m.c. before storage. The performances of four different drying methods: artificial dryer (Kiwi Mini) set at 30°C or 45°C, natural sun drying, and in-bin natural ventilation drying were evaluated. Natural sun drying, and in-bin natural ventilation drying were conducted from March to May, 1997, when mean temperature and relative humidity during sunny days were 17°C and 60% respectively. The dried seeds were stored under two conditions: open storage at 20.5°0 and 55% relative humidity (r.h.), and closed storage at 25°C and 90% r.h. for 20, 40, and 60 days. Time and energy consumed for drying by the different methods were determined to compare the drying efficiency when combined with quality of the seed. Deterioration of the seed due to storage conditions and drying methods used was determined by assessing their effects on seed germination, abnormal seedlings, dead seed, hollow heart percentages, and conductivity. Seed samples dried by the Kiwi Mini dryer set at 45°C took 7 hours and those set at 30°C took 17 hours. It took 54 hours with natural in-bin ventilation drying, while sun drying took 37 hours. However, energy consumed when drying seeds at 30°C was 17 kWh, which was more than twice that at 45°C. Seed germination was not significantly different between drying methods, but averaged only 75% because of sprouting damage of the crop prior to harvest. Germinations after open and closed storage for 20 days did not differ, although some differences appeared after 40 days of storage. However, open and closed storage for 60 days significantly reduced seed germination to 54 and 33% respectively. Because seeds are heat-sensitive, drying air temperature and drying rate are particularly important to avoid internal seed breakage, cracking and splitting, fungal growth, and loss of germination and vigour. Selected studies have shown that seed can be dried at high temperature for a short time, followed by tempering to re-distribute moisture and temperature inside the seed, thus reducing the percentage of cracking. Thus, a second experiment was conducted with maize (Zea mays L) to study the impact on seed viability of high temperature drying followed by tempering. Maize at 28.5% initial seed m.c. was dried at 60°C for short periods of 5, 10, 15, 20, or 25 minutes, followed by tempering for 45 minutes at either 30°C or 21°C. This cycle was repeated until maize seeds were dried to 13.0% m.c.. The percentage of cracked seeds, germination immediately after drying, and after an accelerated ageing test, did not differ between 30°C and 21°C tempering. Drying exposure times of up to 10 minutes per cycle at 60°C caused vertical cracks in up to 50% of seeds, but seed germination remained over 90% and seed vigour was also maintained. The percentage of seeds with stress cracks due to high temperature drying (5 - 25 minute cycles) at 60°C followed by tempering had polynomial relationships with seed germination and vigour. Seeds dried at the same temperature without tempering had their germination reduced from 99 to 20%

Final report: refugee oral health sector capacity building project

This report develops new resources that support the Victorian public oral health sector\u27s clients of refugee and asylum seeker backgrounds.Summary: The first key outcome of the project was the development of new resources that support the Victorian public oral health sector. A Model of Care, two Factsheets on identifying and working with clients of refugee and asylum seeker background, and a central resource repository were developed by the Project Worker with assistance from the Project Advisory Group. The Model of Care and the complementary Factsheets were designed to support services to implement Priority Access and Fee Exemption policies. Further, the proposed Model of Care places a focus on oral health education which assists to minimise late-stage and costly interventions, consistent with developments in relation to Minimal Intervention Dentistry (MID). The Model of Care encourages dental staff to observe and assess clients for clinical and social risks that may impact on the client’s oral health care and/or client ability to renegotiate complex appointment systems for follow up care; and, based on this assessment, to set up recall for clients who show high oral health risk (including any identified clinical and social risks). The Model of Care also aims to provide services with guidance to assist in ascertaining when those of refugee background can be assessed as no longer requiring Priority Access. The Model of Care has been positively received by practitioners and services, however needs to be incorporated into policy and guidelines in order to support its implementation.In addition to the Model of Care and Factsheets, a collection of refugee oral health literature and resources have been collated into a repository on the Victorian Refugee Health Network website www.refugeehealthnetwork.org.au. The project identified a need for additional pictorial, translated and interactive web-based oral health information to be developed, especially on the topic of health education for people of refugee backgrounds. Oral hygiene maintenance, how to navigate the oral health care system, and what to expect before and after a dental treatment are suggested themes.Another key output was the development, trialling and evaluation of the Refuge Oral Health Targeted Education Program (TEP) – a professional development curriculum for oral health service staff. Evaluation of the TEP showed that staff who participated in the program demonstrated an increase in (a) knowledge, (b) confidence and (c) understanding of practice in working with clients of refugee and asylum seeker backgrounds.There is a high demand for oral health training and evidence from this project shows that the TEP is not only informative, but also effective in changing perception and practice in oral health service delivery. The TEP should be implemented across Victoria in services responding to high numbers of refugee and asylum seeker clients. While there is a need to make the TEP widely available, this also has resource implications and it is suggested that these could be partially addressed by making some of the learning modules available online.The project also identified the need for regional or statewide forum(s) to promote the findings of the project and promote good practice across services. It will be important to continue to develop opportunities for dental professionals, researchers, government and refugee related services to come together to share clinical expertise, emerging issues, clinical presentations, case studies and service developments, specific to working with clients or refugee and asylum seeker background.A lack of formalised pathways between dental, intake, Refugee Health Nurses and settlement services was highlighted during the TEP as an area for further development, and for consideration in other services.Finally, this project highlighted significant gaps in Australian research in relation to the following areas: the oral health status of new and recently arrived refugee background populations (noting changing demographics now and in the future); evidence regarding approaches to providing better access, appropriate clinical care and addressing oral health literacy for refugee background population (including oral health promotion and education); and in new and emerging approaches such as Minimal Intervention Dentistry (MID). The recommendations below provide next steps in implementation in the areas of policy, referral pathways, professional and organisation development, resources and research.Authored by: Thuy Nguyen, Sue Casey, May Maloney & Stephanie Rich on behalf of the Project Advisory Grou

Geometry of singularities of a Pinchuk's map

We describe a singular variety associated to a Pinchuk's map and calculate its homology intersection. The result provides geometries of singularities of this Pinchuk's map

Spring 2015, Serving Our 1,000+ International Students

As the population of international students and scholars continues to grow, the integration of campus resources to serve them is becoming more and more vital. OISS, the Office of International Students and Scholars, collaborates with many offices and organizations around campus to cultivate working relationships that will benefit this effort, not just on campus but within the local community. International students and scholars arrive at UNH from about 85 different countries. One can see all the different countries represented by the colorful display of flags in the MUB. There was a time where UNH proudly had flags from A-Z, but our student from Zambia has graduated and gone on to a successful career

マアジ鱗の可食性フィルム原料としての特性の解明とその有効利用法の開発

東京海洋大学博士学位論文 平成26年度(2014) 応用生命科学 課程博士 甲第338号指導教員: 大迫一史全文公表年月日: 2021-12-14東京海洋大学201

An algorithm to classify the asymptotic set associated to a polynomial mapping

We provide an algorithm to classify the asymptotic sets of the dominant polynomial mappings F: \C^3 \to \C^3 of degree 2, using the definition of the so-called "{\it fa\c{c}ons}" in \cite{Thuy}. We obtain a classification theorem for the asymptotic sets of dominant polynomial mappings F: \C^3 \to \C^3 of degree 2. This algorithm can be generalized for the dominant polynomial mappings F: \C^n \to \C^n of degree $d$, with any $(n, d) \in {(\N^*)}^2$