Yi Chen

This report describes the analytical models Lawrence Berkeley National Laboratory developed to estimate impacts of the U.S. Environmental Protection Agency’s WaterSense® labeling program. The models assess national impacts for WaterSense labeled toilets, faucets, faucet aerators, showerheads, flushing urinals, commercial pre-rinse spray valves, and weather or soil moisture sensor-based irrigation controllers by analyzing national inputs for water use in residential and commercial/institutional markets. For irrigation controllers, LBNL’s methodology also incorporates a scenario that evaluates impacts in three key large states that are considered to be the principal market for “smart” irrigation controllers: California, Florida, and Texas. The models estimate impacts for the water savings attributable to the program and the net present value of the lifetime water savings from more efficient products.

© 2016 American Chemical Society.Hydrostatic pressure applied using diamond anvil cells has been widely explored to modulate physical properties of materials by tuning their lattice degree of freedom. Independently, electrical field is able to tune the electronic degree of freedom of functional materials via, for example, the field-effect transistor configuration. Combining these two orthogonal approaches would allow discovery of new physical properties and phases going beyond the known phase space. Such experiments are, however, technically challenging and have not been demonstrated. Herein, we report a feasible strategy to prepare and measure FETs in a DAC by lithographically patterning the nanodevices onto the diamond culet. Multiple-terminal FETs were fabricated in the DAC using few-layer MoS2 and BN as the channel semiconductor and dielectric layer, respectively. It is found that the mobility, conductance, carrier concentration, and contact conductance of MoS2 can all be significantly enhanced with pressure. We expect that the approach could enable unprecedented ways to explore new phases and properties of materials under coupled mechano-electrostatic modulation.

© The Author 2017.Topological Weyl semimetal, a new state of quantum matter, has sparked enormous research interest recently. Possessing unique Weyl fermions in the bulk and Fermi arcs on the surface, TWSs offer a rare platform for realizing many exotic physical phenomena. TWSs can be classified into type-I that respect Lorentz symmetry and type-II that do not. Here, we directly visualize the electronic structure of MoTe 2, a recently proposed type-II TWS. Using angle-resolved photoemission spectroscopy, we unravel the unique surface Fermi arcs, in good agreement with our ab initio calculations that have nontrivial topological nature. Our work not only leads to new understandings of the unusual properties discovered in this family of compounds, but also allows for the further exploration of exotic properties and practical applications of type-II TWSs, as well as the interplay between superconductivity and their topological order.

© 2016 American Chemical Society.Layered transition metal chalcogenides with large spin orbit coupling have recently sparked much interest due to their potential applications for electronic, optoelectronic, spintronics, and valleytronics. However, most current understanding of the electronic structure near band valleys in momentum space is based on either theoretical investigations or optical measurements, leaving the detailed band structure elusive. For example, the exact position of the conduction band valley of bulk MoS2 remains controversial. Here, using angle-resolved photoemission spectroscopy with submicron spatial resolution, we systematically imaged the conduction/valence band structure evolution across representative chalcogenides MoS2, WS2, and WSe2, as well as the thickness dependent electronic structure from bulk to the monolayer limit. These results establish a solid basis to understand the underlying valley physics of these materials, and also provide a link between chalcogenide electronic band structure and their physical properties for potential valleytronics applications.

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimSuperconductivity in monolayer niobium diselenide on bilayer graphene is studied by electrical transport. Monolayer NbSe2 is grown on bilayer graphene by molecular beam epitaxy and capped with a selenium film to avoid degradation in air. The selenium capped samples have TC = 1.9 K. In situ measurements down to 4 K in ultrahigh vacuum show that the effect of the selenium layer on the transport is negligible. The superconducting transition and upper critical fields in air exposed and selenium capped samples are compared. Schematic of monolayer NbSe2/bilayer graphene with selenium capping layer and electrical contacts.

© 2016 American Chemical Society.High quality WSe2 films have been grown on bilayer graphene with layer-by-layer control of thickness using molecular beam epitaxy. The combination of angle-resolved photoemission, scanning tunneling microscopy/spectroscopy, and optical absorption measurements reveal the atomic and electronic structures evolution and optical response of WSe2/BLG. We observe that a bilayer of WSe2 is a direct bandgap semiconductor, when integrated in a BLG-based heterostructure, thus shifting the direct-indirect band gap crossover to trilayer WSe2. In the monolayer limit, WSe2 shows a spin-splitting of 475 meV in the valence band at the K point, the largest value observed among all the MX2 materials. The exciton binding energy of monolayer-WSe2/BLG is found to be 0.21 eV, a value that is orders of magnitude larger than that of conventional three-dimensional semiconductors, yet small as compared to other two-dimensional transition metal dichalcogennides semiconductors. Finally, our finding regarding the overall modification of the electronic structure by an alkali metal surface electron doping opens a route to further control the electronic properties of TMDCs.

© 2016 Macmillan Publishers Limited.Layered transition metal dichalcogenides are ideal systems for exploring the effects of dimensionality on correlated electronic phases such as charge density wave order and superconductivity. In bulk NbSe 2 a CDW sets in at T CDW = 33 K and superconductivity sets in at T c = 7.2 K. Below T c these electronic states coexist but their microscopic formation mechanisms remain controversial. Here we present an electronic characterization study of a single two-dimensional layer of NbSe 2 by means of low-temperature scanning tunnelling microscopy/spectroscopy, angle-resolved photoemission spectroscopy, and electrical transport measurements. We demonstrate that 3 × 3 CDW order in NbSe 2 remains intact in two dimensions. Superconductivity also still remains in the 2D limit, but its onset temperature is depressed to 1.9 K. Our STS measurements at 5 K reveal a CDW gap of= 4 meV at the Fermi energy, which is accessible by means of STS owing to the removal of bands crossing the Fermi level for a single layer. Our observations are consistent with the simplified electronic structure of single-layer NbSe 2, thus providing insight into CDW formation and superconductivity in this model strongly correlated system.

The problem is a traditional Chinese temperament is extremely important issue, the problem in different stages of development of the academic performance of different forms, the article is mainly from the development of this problem starting in the Song Dynasty, Zhu Xi and then examines the efforts of scholars on the benevolence and Hunan Love relationship to the discussion, which reveals the importance of temperament and Taoist internal shunt: the Ikawa, under the represented school of Zhu Xi, the advocates work only under the Han Yi Munetomo learning, and ease up on them; are those who as for enlightenment, as the representative of the Wufeng up camp, just work on the idea of the Shih-Jen, learning under the school's self-denial inherent within it. This Taoist internal differences largely based on the different nature to grasp the problem, the article seeks to explore how this difference affects the diversion of Taoism. I think, what is crucially important and widely neglected in the research of traditional Chinese philosophy is the problem concerning about the relationship between these two notion: "Xing" and "Qing" . It could be discerned as a pivotal clue in different stages in the development of traditional Chinese philosophy. I would like to point out how it has manifested in the movement of Neo-Confucianism in Song dynasty, which has caused different branches of this philosophical movement. And I think it would be clear to understand their different interpretations of this problem, if we would pay attention to the disputation between Chu Hsi and Nan-hsuan on the distinction between the two notions "Ren" and "Ai" . The opposite standpoints in their treatment of these two notions "Ren" and "Ai" has revealed the different comprehensions of the fundamental problem about "Xing" and "Qing" between these two schools of Neo-Confucianism. The school represented by Chu Hsi emphasized the necessity to cultivate and discipline oneself in practice so as to able to approach the inner Goodness, that is, to "Shi Ren" . But the opposite perspective which was taken by "Hu-hsiang" scholars, especially that of Nan-hsuan, claimed that it is only through the comprehension of the Goodness, that is, only one has the ability to grasp the Goodness immediately, that he would do appropriately in practical life and thus it would be natural for him to obtain the practial wisdom or scrutiny and self-discipline which was heavily stressed by Chu Hsi. I hope that through my interpretation of the debate aroused by different perspectives about the distinction between " Ren "and" Ai "in Neo-Confucianism and the consequences caused by it, one would get the impression of the significance of the problem of" Xing "and" Qing "in the development of traditional Chinese philosophy

Resumen: El piano, de origen europeo, es la cristalización de la civilización musical occidental y es conocido como el rey de los instrumentos musicales. Después de cientos de años de desarrollo, ha desarrollado un sistema relativamente completo de creación, interpretación y enseñanza. En este proceso, se puede ver que hay muchas obras de música para piano con el estilo y el encanto únicos del pensamiento tradicional chino, utilizando el método de la música folclórica china y la melodía con características chinas. La combinación de pensamientos tradicionales y piano demuestra el encanto único de la música china, con una fuerte herencia cultural y atractivo artístico. Por lo tanto, las obras de música para piano infiltradas en el pensamiento tradicional chino no son sólo un tesoro de China, sino también un elemento indispensable en la interpretación y educación del piano chino. El propósito de este artículo es comprender y reflexionar profundamente sobre las obras de música para piano en la cultura tradicional china, explorar la singularidad y el encanto de las obras de música para piano chinas y comprender la encarnación de los pensamientos tradicionales chinos en la creación de música para piano, explorando así la singularidad y la innovación. de la creación de música para piano china, proporcionando referencia y apoyo para promover el desarrollo de las obras de música para piano china.

Offering an alternative mode of visual cultural analysis to the prevalent discursive model, this book proposes to situate analysis of Image within 'formal' analyses of culture experience. Specifically, the discussion draws on theories of affective aesthetics with the view of addressing the sensual form of culture (i.e. 'cultural form'). Therefore, the volume puts forward a mode of formalist analysis in visual cultural research which takes purchase on the idea of 'cultural form.' A continuum of formalist attention between Image analysis (visual media, industrial design) and probing of 'cultural forms' establishes the theoretical underpinning of the book. These concepts are expounded through a case study which looks at formal experimentations and debates arising from 1960s avant-garde artistic practices in London.

Background: Although ethics consultation has been introduced to clinical practice for many years, the results of empirical studies to evaluate the effectiveness of ethics consultation are still controversial. The design of randomised controlled trials is considered the best research design to evaluate the effect of a clinical practice on the outcomes of interests. In order to understand the effects of ethics consultation, we conducted this search for studies with the design of randomised controlled trials to evaluate ethics consultation.Objective: To provide an integrated review of studies with the design of randomised controlled trials to evaluate the effectiveness of ethics consultation.Methods: PubMed was used to search for studies using the randomised controlled trial design to evaluate the effectiveness of ethics consultation. The search term used was “ethics consultation”. The selection criterion was limited to “randomised controlled trial”.Results: Four articles that met both search criteria were retrieved. One of these articles reported a study that did not actually use the design of a randomised controlled trial and is excluded from the following discussion.Conclusions: To apply randomised controlled trials to evaluate the effectiveness of ethics consultation is extremely difficult as long as two issues are not resolved: the standardisation of ethics consultation and a placebo for ethics consultation to eliminate the placebo effect. Thus, the results generated by the design of randomised controlled trials are always problematic. Furthermore, as long as the two issues exist, the results generated by the design of quantitative research methods always pose problems

Confucian state doctrines have shaped Asian cultures for millennia as prescriptive codes of conduct with an emphasis on hierarchy and obligation. Yet a premise at the core of lǐ —understood as propriety, ritual, or generally a cultural grammar—is authenticity, and authentic respect cannot be commanded. What if the lǐ were to be elegant instead? Hans-Georg Gadamer analyzed play as a fusion of horizons that are absorbed into the same event, co-constituting subject and object in an aesthetic experience, and dissolving their dichotomy. We consider examples from Japanese aesthetics in this framework to give depth to key Confucian concepts: the values that enable a relationality that is not in conflict with autonomy; the points of reference for self-improvement through culture; a social organization that enacts reciprocity; and the essential posture this requires. The radical simplicity of the philosophy of tea, chanoyu, and the aesthetic refinement of the Katsura Rikyū palace illuminate the principle of emotional resonance in encounters, which underlies the fusion of cognitive, ethical, and aesthetic horizons. This view reveals how the relational premise of the Confucian philosophical system entails an ontological commitment to mutuality. This is indeed ethics, but neither particularism nor generalism; in its aesthetic dimension it is the mode of perception of a self fulfilled in play.

Venneman and colleagues argue that “do not resuscitate” (DNR) is problematic and should be replaced by “allow natural death” (AND). Their argument is flawed. First, while end-of-life discussions should be as positive as possible, they cannot and should not sidestep painful but necessary confrontations with morality. Second, while DNR can indeed be nonspecific and confusing, AND merely replaces one problematic term with another. Finally, the study’s results are not generalisable to the populations of physicians and working nurses and certainly do not support the authors’ claim that there is a movement to replace DNR with AND

The structure of Au layers deposited by sputtering on oxidized p-type Si substrates is investigated by a combination of scanning electron microscopy and scanning probe microscopy. The effect of the temperature on the grain structure of the layers has been determined, revealing that an annealing temperature of 300° C results in a larger grain size and smoother surfaces but generates some cracks in the film surface. At an annealing temperature of 500° C, further grain growth is observed, but a high density of cracks and voids also results while there is little enhancement regarding the smoothness of the grain surfaces

The Purpose of this study was to investigate the effect of cloud mobile learning and creative environment on college student’s creativity performance. A nonequivalent pretest-posttest quasi-experimental design was used in this research. The objects were two freshman classes selected from a public university and randomly assigned to the experimental group and the control group. A learning activity named Amphibious Mechanical Beast was conducted in this teaching experiment. The experimental was taught using cloud mobile learning, while the control group was taught using the traditional (usual) way. Participant student’s design performances before and after the experiment were evaluated. Creative Environment Scale was used to collect data of student’s perception of creative environment. Additionally, an open ended questionnaire was used to realize student’s learning processes. The one-way analysis of covariance (ANCOVA) and the two-way analysis of covariance were performed in this research. After data coding, relative concepts, themes, and theories were integrated and developed. Finally, the findings were proposed according to result of qualitative data analysis. 　　Those main results of this research were: 1.Cloud mobile learning had a positive effect on student’s creative process. Most participant students thought cloud mobile device using convenient and prompt while learning. Cloud mobile learning improved student active participation, and was student-centered rather than teacher-centered. Participant student’s high order thinking abilities could be improved by receiving information and discussing anytime and anywhere. Those high order thinking included problem solving, critical thinking, and creative thinking. Nevertheless, minor participant students’ learning was influenced by past learning habits and insufficient devices. 2. Cloud mobile learning had positive effects on newness, elaborateness, and total aspect of creative products. 3. Perceptions of creative environment had positive effects on preparation stage and reaction stage of creative process. 4. Perceptions of creative environment which were above a certain level had positive effects on creative products. 5. Cloud mobile learning had positive effects on preparation stage of students’ creative process who had lower perceptions of creative environment. 6. Cloud mobile learning had positive effects on value of students’ creative products who had lower perceptions of creative environment. 7. Cloud mobile learning had positive effects on total aspect of students’ creative products who had higher perceptions of creative environment. Finally, recommendations and suggestions were addressed for implementation of cloud mobile learning and future studies based on results of this research.

Traditionally, comparative literature has focused on the study of influences between texts and it is only recent work that has explored the analogies and affinitiesof historically independent cultures. In this spirit, this paper develops methods for a structured poetic analysis and applies them to a systematic comparison of thepoem “Niǎo Mǐng Jiàn” from the 8th-century Chinese poet Wáng Wéi and the program piece of Paul Celan’s Atemwende: “Du Darfst,” based upon a detailed analysis of their poetics. The analysis and translation reveals how both poems employ words and images as signs without reference, and create dialogical gaps through ambiguity and impersonality. Thus, despite their cultural and historical separation, both poetic texts become “hermetic,” and both poets apply the “hermetic” as a method of inquiry into truth, a truth that cannot be simply pronounced, but needs to be cowitnessed, or heard in silence. It is through this meaningful “silence” that their poetry invites readers and translators all the more perceptively to engage in meaningful conversations. These results entail encouraging perspectives for the question of the limits of translation, especially with regard to east-western studies and for crosscultural comparative literature. Thus, the paper supports Prof. Li Qingben’s and Prof. Guo Jinghua’s claim for a multi-dimensional framework in the study of East-West cultural influences.