999 research outputs found
Making sense of health education in the Solomon Islands.
No full textThis article explores both the process and outcomes of a working Partnership between Solomon Islands College for Higher Education and the University of Waikato that explored the development of the initial teacher education health education courses. Through a process of co-construction and inquiry, teacher educators from the Solomon Islands and New Zealand developed a metaphorical context-specific model to represent understandings of health education in the Solomon Islands. The model and what this has meant for teaching and learning in health education at both SOE and in schools is examined
REPRESENTASI PERAN IBU SINGLE PARENT DALAM AKUN INSTAGRAM AYU TINGTING (@ayutingting92)
Full text linkInstagram is one social media to express themselves as well as the media for the exchange of information. With Instagram, single parent mother can freely express her activities with her child. It is seen from celebrity Ayu TingTing (@ayutingting92) who participate and share their daily activities so that she has the most followers all over Indonesia. By making herself have the most followers make writers want to know how Ayu represents the role of single parent mother in educating and protecting her child. The author analyzes through candid photographs of Ayu TingTing with her daughter who goes into educational and protective classification using Charles Sanders Pierce's semiotics and divides them into icons, indexes, symbols. To strengthen photo analysis the author uses non verbal communication theory and interpersonal. The results showed that Ayu TingTing represented the educating role with the fun of playing while learning where she was the teacher for her daughter. While in the role of protecting, Ayu represent it with a touch to keep her child's health and keep from accident
Advanced winding models and ontology-based fault diagnosis for power transformers
No full textPower transformer plays an important role in a power system, and its fault diag- nosis has been recognised as a matter of most considerable interest in maintaining the reliable operation of a power system. In practise, operation and fault diagno- sis of the power transformer are based on knowledge and experience of electrical power engineers. There are several on-line diagnosis methods to monitor the power transformer, such as dissolved gasses analysis (DGA), partial discharge (PD), and frequency response analysis (FRA). In order to reduce the cost and increase fault diagnosis efficiency, new techniques and expert-systems are required, which can provide power transformer failure knowledge representation, automated data analy- sis and decision-making.
Power transformer failure modes and diagnostic methods have been reviewed in Chapter 1. Then, ontology has been employed in establishing the power fail- ure models system. Ontology is a mechanism that describes the concepts and their systematic relationships. In order to develop ontology system for the power failure models system, numerous concepts and their relationships between faults exhibited for power transformers are analysed. This system uses a software called Prote ́ge ́, which is based on ontology to provide a semantic model for knowledge representa- tion and information management. The relationship between electrical failure mod- els has been illustrated successfully, and the system can correctly provide a query searching function.
Partial discharge (PD) is a common fault in power transformer, it may causes gradual degradation of power transformer insulation material, which may finally lead to a full break down. Localisation of PD source is vital for saving in mainte- nance time and costs, but it is not a simple task in application due to noise signal
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and interference. The multi-conductor transmission model (MTL) is one of the most suitable models for PD propagation study in transformers. Chapter 3 shows an ini- tial study of MTL model and tests its effectiveness of PD faults locations. Then, the transfer function from all possible PD locations to line-end and neutral-end were calculated. The results proved that this method can estimate the location of PD very effectively.
FRA is a diagnosis method for detecting winding deformation based on varia- tion of power transformer AC impedance. In chapter 4, a lumped parameter winding model of single phase power transformer is introduced. However, the FRA fre- quency range of original lumped model is only available up to 1MHz. In order to improve frequency response range, an advanced lumped model has been proposed by adding a negative-value capacitive branch with inductance branch in the original model. It significantly enhances the valid range of frequency up to 3MHz.
In chapter 5, three optimisation methods, particle swarm optimisation (PSO), genetic algorithms (GA), and simulated annealing (SA) are subsequently applied for transformer parameter identification based on FRA measurements. The simulation results show that PSO, GA, and SA can accurately identify the parameters, partial significance of the deviation between simulation with reference is acceptable. The model with the optimised parameters ideally describes the magnetic and electrical characteristics of the given transformer. The comparison of results from the opti- misation methods shows that converge time of PSO is shorter than others’ and the GA provides the best FRA outputs, which is more closer to reference in a limited number of iterations
Lessons From Hospitality: Towards A Hybrid Model Of Senior Living Communities
Full text linkOld age gets most of us, and how we spend it should be meaningful. The hospitality sector could play a vital role in this regard. Senior living communities are big business in the U.S., but they face demands from residents, and the family and friends who visit them, for more than the traditional focus on healthcare. UCF Rosen College of Hospitality Management researchers, Dr. YunYing Zhong, Dr. Tingting Zhang, and their co-author understand the connection between the senior living community and hospitality sectors; their research is giving impetus to a hybrid model that could benefit both
CARBON NANOTUBES/IONOPHORE MODIFIED ELECTRODE FOR ANODIC STRIPPING DETERMINATION OF LEAD
No full textBifunctional combination of carbon nanotubes and ionophore is introduced for anodic stripping analysis of lead (Pb(2+)). Carbon nanotubes are employed to improve the detection sensitivity due to their excellent electrical conductivity and strong adsorption ability. An ionophore is utilized for its excellent selectivity toward Pb(2+). The proposed carbon nanotubeslionophore modified electrode shows improved sensitivity and selectivity for Pb(2+). Low detection limit (1 nM), wide linear range (5 nM-8 mu M) and excellent selectivity over other metal ions (Cd(2+), Cu(2+), and Hg(2+)) was obtained. The practical application has been carried out for determination of Pb(2+) in real water samples.Bifunctional combination of carbon nanotubes and ionophore is introduced for anodic stripping analysis of lead (Pb(2+)). Carbon nanotubes are employed to improve the detection sensitivity due to their excellent electrical conductivity and strong adsorption ability. An ionophore is utilized for its excellent selectivity toward Pb(2+). The proposed carbon nanotubeslionophore modified electrode shows improved sensitivity and selectivity for Pb(2+). Low detection limit (1 nM), wide linear range (5 nM-8 mu M) and excellent selectivity over other metal ions (Cd(2+), Cu(2+), and Hg(2+)) was obtained. The practical application has been carried out for determination of Pb(2+) in real water samples
Nanomaterial/Ionophore-Based Electrode for Anodic Stripping Voltammetric Determination of Lead: An Electrochemical Sensing Platform toward Heavy Metals
No full textA novel nanomaterial/ionophore-modified glassy carbon electrode for anodic stripping analysis of lead (Pb2+) is described. Nanosized hydroxyapatite (NHAP) with width of 20-25 mn and length of 50-100 nm has been prepared and used to improve the sensitivity for detection of Pb2+ because it provides unique three-dimensional network structure and has strong adsorption ability toward Ph2+. An ionophore, usually used in ion-selective electrodes, is utilized here for its excellent selectivity toward Pb2+. Nafion, a cation-exchange polymer, is employed as the conductive matrix in which NHAP and the ionophore can be tightly attached to the electrode surface. Such a designed NHAP/ionophore/Nafion-modified electrode shows remarkably improved sensitivity and selectivity to Pb2+. The electrode has a linear range of 5.0 nM to 0.8 mu M with a 10 min accumulation time at open-circuit potential. The sensitivity and detection limit of the proposed sensor are 13 mu A/mu M and 1.0 nM, respectively. Interference from other heavy metal ions such as Cd2+, Cu2+, and Hg2+ associated with lead analysis can be effectively diminished. The practical application of the proposed sensor has been carried out for determination of trace levels of Pb2+ in real water samples.A novel nanomaterial/ionophore-modified glassy carbon electrode for anodic stripping analysis of lead (Pb(2+)) is described. Nanosized hydroxyapatite (NHAP) with width of 20-25 mn and length of 50-100 nm has been prepared and used to improve the sensitivity for detection of Pb(2+) because it provides unique three-dimensional network structure and has strong adsorption ability toward Ph(2+). An ionophore, usually used in ion-selective electrodes, is utilized here for its excellent selectivity toward Pb(2+). Nafion, a cation-exchange polymer, is employed as the conductive matrix in which NHAP and the ionophore can be tightly attached to the electrode surface. Such a designed NHAP/ionophore/Nafion-modified electrode shows remarkably improved sensitivity and selectivity to Pb(2+). The electrode has a linear range of 5.0 nM to 0.8 mu M with a 10 min accumulation time at open-circuit potential. The sensitivity and detection limit of the proposed sensor are 13 mu A/mu M and 1.0 nM, respectively. Interference from other heavy metal ions such as Cd(2+), Cu(2+), and Hg(2+) associated with lead analysis can be effectively diminished. The practical application of the proposed sensor has been carried out for determination of trace levels of Pb(2+) in real water samples
Acidity and proton affinity measurement of cytosine by multiple methods in the gas phase
No full textThe measurement of the intrinsic acidity of nucleic bases is essential for understanding the fundamental properties in biological systems. The Hydrogen bonding is critical to DNA stability and reactivity of oligonucleotides. The strength of hydrogen bonding can be gauged by the intrinsic acidity of the donor NH groups and the intrinsic basicity of acceptor atoms. Acidity is also indicative of the leaving group ability of a nucleobase in deglycosylation processes.
In this dissertation, we examine the gas phase acidity and proton affinity of cytosine using Fourior transform mass spectrometry (FTMS), liquid chromatography mass spectrometry (LCMS) and ab initio calculations at B3LYP/6-31+G*. The experimental gas phase acidities and proton affinities were established using bracketing method, equilibrium method and Cooks kinetic method. Finally, we discuss the tautomer problem and deuterated experiments and the possible mechanism of the base excision repair by TDG enzyme.M.S.Includes bibliographical references (p. 27-28)
A FAST DIGITAL CHAOTIC GENERATOR FOR SECURE COMMUNICATION
No full text[[abstract]]In this paper, we propose a digitalized chaotic map, Variational Logistic Map (VLM), modified from classical logistic map to be used in secure communication. Compared with classical logistic map, VLM has large parameter space without windows and can be implemented at low hardware cost. Referring to statistical testing suites SP800-22 and TestU01, VLM with the proposed scrambling method can significantly improve the output complexity as compared with other logistic-map based generators and piecewise linear chaotic map. Experiments show that the throughput of a 32-bit VLM is up to 3200 Mbps in 0.18 mu m process. Furthermore, a chaotic crypto scheme, Multi-VLM (MVLM), constructed by four 32-bit VLMs can generate an output sequence with a minimal length equal to 2(128) - 1 by a 128-bit external key.[[fileno]]2030202010033[[department]]資訊工程學
Rhyacodrilus tanggulaensis Jiang & Zhou & Wang & Erséus & Cui 2023, sp. nov.
No full text<i>Rhyacodrilus tanggulaensis</i> Jiang & Cui, sp. nov. <p> <b>Holotype.</b> IHB TTH20170720 a, mature specimen, stained and whole-mounted in Canada balsam.</p> <p> <b>Type locality.</b> Tongtian River (34.1084 N, 95.7199 E), Yushu City, Qinghai province, China. Elevation 4077 m a.s.l, water temperature 15.3 °C, pH 8.3, dissolved oxygen 7.1 mg. l-1, conductivity 801 μS/cm. Collected by Yongde Cui and Tingting Zhou on 20 July 2017.</p> <p> <b>Paratypes.</b> IHB XZ20200903 b, 1 mature specimen whole-mounted in Canada balsam, Nagqu river in Tibet (31.6574 N, 92.0219 E). Elevation 4586 m a.s.l., water temperature 12.3 °C, pH 8.7, dissolved oxygen 6.1 mg. l-1, and conductivity 485 μS/cm. Collected by Yongde Cui, Tingting Zhou and Wei Jiang on 09 September 2020.</p> <p> <b>Other material.</b> 3 specimens from the Nagqu River for scanning electron microscopy. The species was also observed, but not studied in detail, in Za’gya Zangbo River.</p> <p> <b>Etymology.</b> Named <i>tanggulaensis</i> after the Tanggula Mountains. The rivers where the specimens were collected are all related to the Tanggula Mountains.</p> <p> <b>Description.</b> Length about 8–9 mm, width at genital segments X–XI about 0.5–0.6 mm. Segments 35–45. Prostomium round. Coelomocytes large, abundant, granulated, diameter 8–16μm. Clitellum extending over 1/2X–XI.</p> <p>Dorsal and ventral bundles with 4–5 bifid chaetae, 75–90 μm long, 2–3 μm wide, distal tooth 2–3 times longer than proximal (Figs. 1A, 2A, B). Hair chaetae absent. Modified spermathecal chaetae in segment X (Figs. 1B, 2D), 1–2 per bundle, 75–100 μm long, 4–5 μm wide, bifid with very long, sharply-pointed distal tooth and rounded proximal end. The same kind of chaetae present in IX and XII. Penial chaetae in XI, 4 per bundle, 75–100 μm long, 4–5 μm wide, single-pointed with slightly curved tips (Fig. 2C). Male pores paired, close to the mid-ventral line of the body, immediately anterior to penial chaetae in XI. Spermathecal pores paired, in line with ventral chaetae, immediately anterior to spermathecal chaetae in X.</p> <p>Male genitalia paired in X–XI (Fig. 1C). Sperm funnel cup-shaped. Vas deferens 1–1.5 mm long, 13–15 μm wide, joining the atrial ampulla subapically. Atrium elongated, 0.7–1 mm long, 70–82 μm wide, roughly tubular, covered by a continuous thick layer of prostatic cells. Atrial duct 300–400 μm long, 25–30 μm wide, with a tortuous lumen. Spermathecae 250–300 μm long, 100–110 μm wide, with short ducts; large masses of randomly arranged sperm in lumina.</p> <p> <b>Distribution and habitat.</b> Known only from Qinghai-Tibet Plateau, in rivers> 4000m above sea level. Some rivers are at the foot of snow mountain (Fig. 3). The sampling area is surrounded by natural plateau grassland. The collection site is a shallow permanent stream with gravel and cobbles sediment.</p> <p> <b>Remarks. Genus level.</b> Morphologically, the new species belongs to the genus <i>Rhyacodrilus</i> based on the presence of spermathecal and penial chaetae, the rich occurrence of coelomocytes, the vas deferens being longer than the atrium and joining it subapically, and the continuous coverage of the atrium with a layer of prostate cells (Brinkhurst & Jamison 1971).</p> <p> <b>Species level.</b> In <i>Rhyacodrilus</i> there are currently 11 species which possess both spermathecal and penial chaetae; they are listed in Rodríguez & Fend (2013, Table 1). Among them, three species are devoid of hair chaetae, <i>R. carsticus</i> Košel, 1980, <i>R. gernikensis</i> Giani & Rodriguez, 1988, and <i>R. ardierae</i> Lafont & Juget, 1993. A comparison of these species with <i>Rhyacodrilus tanggulaensis</i> sp. nov. is given in Table 3. Some obvious differences are as follows: <i>R. carsticus</i> and <i>R. ardierae</i> have globular to oval atria (elongate-tubular in the new species), and <i>R. gernikensis</i> has unmodified genital chaetae and a pear-shaped atrium (see Giani & Rodríguez 1988; Rodríguez & Fend 2013, Achurra & Rodríguez 2016).</p> <p> <b>Geographical distribution.</b> <i>R. ardierae, R. carsticus</i> and <i>R. gernikensis</i> are only known from groundwater habitats at a few sites in western to central Europe (Achurra & Rodriguez 2016). The new species described here is only distributed in rivers above 4000 m elevation on the Qinghai-Tibet Plateau. In this area the river sediments are mainly composed of clean sand and gravel. It is worth noting that the highest distribution is 5263 m above sea level, a locality near Tanggula Mountain, the source of Za’gya Zangbo, Tibet's largest inland river.</p>Published as part of <i>Jiang, Wei, Zhou, Tingting, Wang, Hongzhu, Erséus, Christer & Cui, Yongde, 2023, Integrative taxonomy of a new species of Rhyacodrilus (Annelida: Clitellata: Rhyacodrilinae) from Tibet Plateau rivers, with a preliminary assessment of its phylogenetic position, pp. 125-138 in Zootaxa 5256 (2)</i> on pages 130-131, DOI: 10.11646/zootaxa.5256.2.2, <a href="http://zenodo.org/record/7746357">http://zenodo.org/record/7746357</a>
Shen sha yu shi su de rong he : Sichuan di qu Song dai mu zang chu tu tao yong yan jiu lun wen tu ban ji fu biao (han mu lu )
No full textPh.D.本文以宋代（960-1279）四川墓葬出土的陶俑為研究對象，通過梳理是批陶俑的性質、種類和形制、發展演變歷史以及在墓葬空間中的應用，探討宋代墓葬藝術的特點，并由此展示唐代以後中國墓葬藝術的轉變。宋代四川墓葬的陶俑主要表現了世俗生活和墓葬神煞兩大題材，前者服務於墓主在地下世界的日常生活，後者則是宋元時期堪輿書籍和買地券中記載的與墓葬有關的神煞形象。這兩部分題材陶俑在宋代四川墓葬中的歷史，體現出宋代墓葬藝術的變遷和地方多樣化的特點。本文將以陶俑的外形，如服飾、底座、尺寸為基礎，嘗試處理前人學者未解決的陶俑性質辨別和分類問題。同時，本文將採用兩個新的思路來討論宋代四川的陶俑，一是通過四川各地出土的陶俑來研究當地陶俑的特點，而不是僅以成都的陶俑作為典範；二是通過與唐代以後宗教藝術，包括圖像、造像和建築的對比，來考察宋代四川陶俑的性質特徵、選擇邏輯和在墓葬空間中的功能。通過宋代四川墓葬中的陶俑這一案例，本文提出：一.宋代墓葬藝術是從唐五代的墓葬神煞和世俗生活的二元題材轉變為元明之後以世俗物質生活為主的單元題材。這一轉變在四川發生於南宋中期，此時傳統區域陶俑製作和使用衰落，而新區域則興起了新的陶俑使用方式。二.墓葬藝術在地方上呈現多樣化，除了部分常見的陶俑，地方之間甚至地方內部的陶俑特徵以及使用年代都有差異。三.墓葬神煞和世俗生活兩個題材在宋代四川以模仿宗教建築內神像格局的方式，融合於營造墓室供奉空間的前提下。關鍵字：宋代，墓葬藝術，四川，陶俑This thesis focuses on pottery figurines excavated from tombs of the Song Dynasty (960-1279 CE) at Sichuan province. Through investigating the nature of these figurines, their types, forms, history and use in tombs in the Song Dynasty, this thesis explores the features of Song Dynasty funeral art, and reveals how the funeral art in China transformed after the Tang Dynasty (618-907 CE).Pottery figurines in tombs of the Song Dynasty mainly center on two themes: secular life and funeral deities. Those related to the former theme are servants who look after the daily life of the tomb-master in the underground world, while others include funeral gods and deities recorded in fengshui books and funeral records of the Song and Yuan (1271-1368 CE) periods. The different development of pottery figurines related to the two themes reflects the changes of the funeral art in the Song Dynasty and highlights local diversity as its main feature.This thesis deals with the classification of pottery figurines and the identification of their natures, two issues not fully resolved in previous research, by studying their physical features, such as size, clothing and pedestals. Further, it adopts two new approaches to Sichuan pottery figurines. First, instead of taking figurines found in tombs in Chengdu to represent the whole area as most previous studies did, the thesis draws references from tombs in different parts of Sichuan. Second, it examines the nature of pottery figurines, reasons for their selection and their use in funerary space by comparing them with post-Tang Dynasty religious art including images, sculptures and architecture.Through this case study of pottery figurines found in Sichuan, this thesis will show that (1) the Song Dynasty witnessed the transformation of funeral art from emphasizing both the funeral deities and the seculars in the Tang and the Five Dynasties (907-960 CE) to having a solo stress on the secular life in the Yuan and the Ming (1368-1644 CE) periods. In Sichuan, this change happened in the middle of the Southern Song. (2) Diversity was common for funeral art at the local level. Except for some typical figurines, physical characteristics of most pottery figurines and the period of them being used in tombs differed not only from place to place, but even also within one single region. (3) Song-Dynasty tombs in Sichuan created a worship space in tombs by modelling the placement of both pottery funeral deities and the seculars on that of the statues of gods in religious architecture.Key Words: Song Dynasty, Funeral Art, Sichuan, Pottery Figurines胡听汀.Parallel title from added title page.Thesis Ph.D. Chinese University of Hong Kong 2017.Includes bibliographical references (leaves 259-287).Abstracts in English and Chinese.Title from PDF title page (viewed on February 6, 2020).Hu Tingting
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