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Articles 121 - 150 of 22196
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Lower-Dimensional Black Hole Chemistry, Antonia M. Frassino, Robert B. Mann, Jonas R. Mureika
Lower-Dimensional Black Hole Chemistry, Antonia M. Frassino, Robert B. Mann, Jonas R. Mureika
Physics Faculty Works
The connection between black hole thermodynamics and chemistry is extended to the lower-dimensional regime by considering the rotating and charged Bañados, Teitelboim, and Zanelli (BTZ) metric in the (2 þ 1)-dimensional and (1 þ 1)-dimensional limits of Einstein gravity. The Smarr relation is naturally upheld in both BTZ cases, where those with Q ≠ 0 violate the reverse isoperimetric inequality and are thus superentropic. The inequality can be maintained, however, with the addition of a new thermodynamic work term associated with the mass renormalization scale. The D → 0 limit of a generic D þ 2-dimensional Einstein gravity theory is …
Economic Determinants Of Communal Conflict: Evidence From Indonesia, Edgar Demetrio García, Indra Prasetya Adi Nugroho
Economic Determinants Of Communal Conflict: Evidence From Indonesia, Edgar Demetrio García, Indra Prasetya Adi Nugroho
Asia-Pacific Social Science Review
Religion, ethnicity, and politics are typical explanatory variables of violent conflicts. From an economic point of view, economic growth reduces the risk of civil war, yet the economic determinants of conflict have been little studied. In this article, we empirically study the impact of regional macroeconomic conditions on the number of violent conflicts in Indonesia, a country with potential risks of communal conflict because of the plurality of its society. We use panel data consisting of observations on 16 Indonesian regions from 2004 to 2013 to assess the impact of economic factors on conflict, reevaluating the religion effect using dynamic …
Evaluasi Prosedur Audit Dalam Rangka Pemenuhan Tujuan Audit Atas Piutang Usaha, Andhita Yukihana Rahmayanti, Birawani Dwi Anggraeni
Evaluasi Prosedur Audit Dalam Rangka Pemenuhan Tujuan Audit Atas Piutang Usaha, Andhita Yukihana Rahmayanti, Birawani Dwi Anggraeni
Jurnal Vokasi Indonesia
This study emphasizes the fulfillness of the audit objectives with performed by evaluating the audit procedures on accounts receivable of non-public company, both related to the audit objectives of detailed balance and the audit objectives of presentation and disclosure. Auditors perform audit procedures include tests of controls and test of detailed balance on accounts receivable account, to reach audit assurances that the audit objectives have been met so that the information and figures included in the presentation and disclosure in accordance with general acceptance standard in Indonesia. This study using the descriptive method which analyzes working papers of auditors that …
The Surface Density Profile Of The Galactic Disk From The Terminal Velocity Curve, Stacy S. Mcgaugh
The Surface Density Profile Of The Galactic Disk From The Terminal Velocity Curve, Stacy S. Mcgaugh
Faculty Scholarship
The mass distribution of the Galactic disk is constructed from the terminal velocity curve and the mass discrepancy-acceleration relation. Mass models numerically quantifying the detailed surface density profiles are tabulated. For R0 = 8 kpc, the models have stellar mass 5 < M∗ < 6 × 1010 , scale length 2.0 ≤ Rd ≤ 2.9 kpc, LSR circular velocity 222 ≤ Θ0 ≤ 233 , and solar circle stellar surface density 34 ≤ Σd(R0) ≤ 61 . The present interarm location of the solar neighborhood may have a somewhat lower stellar surface density than average for the solar circle. The Milky Way appears to be a normal spiral galaxy that obeys scaling relations like the Tully-Fisher relation, the size-mass relation, and the disk maximality-surface brightness relation. The stellar disk is maximal, and the spiral arms are massive. The bumps and wiggles in the terminal velocity curve correspond to known spiral features (e.g., the Centaurus arm is a ∼50% overdensity). The rotation curve switches between positive and negative over scales of hundreds of parsecs. The rms amplitude , implying that commonly neglected terms in the Jeans equations may be nonnegligible. The spherically averaged local dark matter density is ρ0,DM ≈ 0.009 (0.34 ). Adiabatic compression of the dark matter halo may help reconcile the Milky Way with the c-V200 relation expected in ΛCDM while also helping to mitigate the too-big-to-fail problem, but it remains difficult to reconcile the inner bulge/bar-dominated region with a cuspy halo. We note that NGC 3521 is a near twin to the Milky Way, having a similar luminosity, scale length, and rotation curve.
On The Transmission Of Tacit Skills In Science: Notes On And Observations Of Japanese Doctoral Science Research Training Laboratories, Marcus Antonius Ynalvez, Yoshinori Kamo, Noriko Hara, Ruby Ynalvez
On The Transmission Of Tacit Skills In Science: Notes On And Observations Of Japanese Doctoral Science Research Training Laboratories, Marcus Antonius Ynalvez, Yoshinori Kamo, Noriko Hara, Ruby Ynalvez
Asia-Pacific Social Science Review
No abstract provided.
Stem Students Help Reinvent The Teacher, Staff
A Data Science Course For Undergraduates: Thinking With Data, Benjamin Baumer
A Data Science Course For Undergraduates: Thinking With Data, Benjamin Baumer
Mathematics Sciences: Faculty Publications
Data science is an emerging interdisciplinary field that combines elements of mathematics, statistics, computer science, and knowledge in a particular application domain for the purpose of extracting meaningful information from the increasingly sophisticated array of data available in many settings. These data tend to be nontraditional, in the sense that they are often live, large, complex, and/or messy. A first course in statistics at the undergraduate level typically introduces students to a variety of techniques to analyze small, neat, and clean datasets. However, whether they pursue more formal training in statistics or not, many of these students will end up …
A Method For Achieving Analytic Formulas For Three Body Integrals Consisting Of Powers And Exponentials In All Three Interparticle Hyllerass Coordinates, Chris M. Keating
A Method For Achieving Analytic Formulas For Three Body Integrals Consisting Of Powers And Exponentials In All Three Interparticle Hyllerass Coordinates, Chris M. Keating
Dissertations and Theses
After an introduction to the variational principle of three body systems via the Helium atom, we present general analytical formulas for the radial parts of integrals that occur when three body systems are described using wave functions that consist of powers and exponentials in all three interparticle Hylleraas coordinates [Hylleraas1929]. This work is an extension of integrals given by Harris, Frolov and Smith, Jr. [Harris2004]. Specifically included are radial integrals encountered in calculations involving the dipole moment matrix element in Hylleraas coordinates that contain a function f(kr1) (such as a spherical Bessel function) in addition to …
Debris Flow Susceptibility Map For Mount Rainier, Washington Based On Debris Flow Initiation Zone Characteristics From The November, 2006 Climate Event In The Cascade Mountains, Kassandra Lindsey
Dissertations and Theses
In November 2006 a Pineapple Express rainstorm moved through the Pacific Northwest generating record precipitation, 22 to 50 cm in the two-day event on Mt. Rainier. Copeland (2009) and Legg (2013) identified debris flows in seven drainages in 2006; Inter Fork, Kautz, Ohanapecosh, Pyramid, Tahoma, Van Trump, and West Fork of the White River. This study identified seven more drainages: Carbon, Fryingpan, Muddy Fork Cowlitz, North Puyallup, South Mowich, South Puyallup, and White Rivers. Twenty-nine characteristics, or attributes, associated with the drainages around the mountain were collected. Thirteen were used in a regression analysis in order to develop a susceptibility …
Kohn–Sham Exchange-Correlation Potentials From Second-Order Reduced Density Matrices, Rogelio Cuevas-Saavedra, Paul W. Ayers, Viktor N. Staroverov
Kohn–Sham Exchange-Correlation Potentials From Second-Order Reduced Density Matrices, Rogelio Cuevas-Saavedra, Paul W. Ayers, Viktor N. Staroverov
Chemistry Publications
We describe a practical algorithm for constructing the Kohn–Sham exchange-correlation potential corresponding to a given second-order reduced density matrix. Unlike conventional Kohn–Sham inversion methods in which such potentials are extracted from ground-state electron densities, the proposed technique delivers unambiguous results in finite basis sets. The approach can also be used to separate approximately the exchange and correlation potentials for a many-electron system for which the reduced density matrix is known. The algorithm is implemented for configuration-interaction wave functions and its performance is illustrated with numerical examples.
Drying Kinetics Of Pullulan-Based Film Forming Solutions, Zhou Yujia, Xiao Qian, Lu Xingchi, Deng Fangming
Drying Kinetics Of Pullulan-Based Film Forming Solutions, Zhou Yujia, Xiao Qian, Lu Xingchi, Deng Fangming
Food and Machinery
The drying kinetics of pullulan and pullulan-PEG film forming solutions were investigated. The results were as followed: the drying curves of pullulan-based films were divided into three stages: the rising rate, the falling rate, and the constant rate period; four mathematical models were fitted to the experimental data; among the drying models considered, the Wang and singh model was found to satisfactorily describe the drying kinetics of pullulan solutions. However, Modified Page equation-II model was found to satisfactorily describe the drying kinetics of pullulan-PEG solutions. As the drying temperature increased from 40 ℃ to 70 ℃, the effective moisture diffusion …
Drying Characteristics With Short- And Medium- Wave Infrared And Quality Changing Of Hosui Pear, Tang Lulu, Yi Jianyong, Bi Jinfeng, Chen Qinqin, Hou Xujie, Liu Xuan
Drying Characteristics With Short- And Medium- Wave Infrared And Quality Changing Of Hosui Pear, Tang Lulu, Yi Jianyong, Bi Jinfeng, Chen Qinqin, Hou Xujie, Liu Xuan
Food and Machinery
In order to improve the qualities of dried hosui pear(Pyrus pyrifolia Nakai.) slices and shorten the drying time, short- and medium- wave infrared drying was applied to drying hosui pear slices. The effects of drying temperatures, drying power, and radiation distances on the drying characteristic of hosui pear were investigated. Meanwhile, the impact of short- and medium- wave infrared drying on color, texture and moisture content of dried hosui pear were analyzed. The results showed that the drying procedure appeared as a falling rate period. The water effective diffusion coefficient (Deff) of hosui pear ranged from 8.622 6×10 …
Applications Of Carbon Materials In Electrochemical Energy Storage, Ji Liang, Lei Wen, Hui-Ming Cheng, Feng Li
Applications Of Carbon Materials In Electrochemical Energy Storage, Ji Liang, Lei Wen, Hui-Ming Cheng, Feng Li
Journal of Electrochemistry
An electrode material for electrochemical energy storage is one of the key components for high performance devices. In a variety of electrochemical energy storage systems, carbon materials, especially the lately emerged carbon nanomaterials including the carbon nanotube and graphene, have been playing a very important role and brought new vitality to the development and demonstration of the broad application prospects. In this review, we summarize the applications of various carbon materials in the typical electrochemical energy storage devices, namely lithium/sodium ion batteries, supercapacitors, and lithium-sulfur batteries, as well as flexible electrochemical energy storage and electrochemical catalysis. A perspective of novel …
Electrodeposition Of Lanthanum In Deep Eutectic Solvents, Li Wang, You-Jun Fan, Lu Wei, Hai-Xia Liu, Shi-Gang Sun
Electrodeposition Of Lanthanum In Deep Eutectic Solvents, Li Wang, You-Jun Fan, Lu Wei, Hai-Xia Liu, Shi-Gang Sun
Journal of Electrochemistry
With the choline chloride/urea deep eutectic solvents (DESs) as the medium, the olive-like lanthanum particles with uniform shape and size were successfully prepared through a potentiostatic deposition method. The prepared samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy and X-ray photoelectron spectroscopy (XPS). At the same time, the effect of deposition potential, temperature and time on the size and morphology of samples was investigated. The results demonstrated that the optimum conditions for the preparation of olive-like lanthanum particles were as follows: deposition potential of -1.7 V, temperature of 80 °C and …
Progress Of Self-Supported Supercapacitor Electrode Materials Based On Carbon Substrates, Shui-Jian He, Wei Chen
Progress Of Self-Supported Supercapacitor Electrode Materials Based On Carbon Substrates, Shui-Jian He, Wei Chen
Journal of Electrochemistry
Self-supported electrode materials have been widely used in supercapacitors. Carbon materials are promising substrates in building self-supported electrode materials attributed to their diverse structures, rich resource, relatively low cost and high stability. Combined with our own research in this field, we summarize here the recent progress on the synthesis of self-supported electrode materials and their supercapacitance properties. The overall synthetic strategy could be divided into two categories: “top-down” and “bottom-up”. We hope this review is helpful for the development and application of renewable sources in self-supported electrode materials.
Synthesis Of Porous Carbon Nanosheets And Its Application In Sodium-Ion Battery, Jing-Fei Zhang, Jing Lu, Xiao-Yu Yang, Yun-Di Huang, Lin Xu, Dong-Mei Sun, Ya-Wen Tang
Synthesis Of Porous Carbon Nanosheets And Its Application In Sodium-Ion Battery, Jing-Fei Zhang, Jing Lu, Xiao-Yu Yang, Yun-Di Huang, Lin Xu, Dong-Mei Sun, Ya-Wen Tang
Journal of Electrochemistry
Owning to sodium’s high abundance, relatively low cost, similar chemical properties to Li and very suitable redox potential of E0(Na+/Na) = -2.71 V versus SHE which is only 0.3 V above that of lithium, rechargeable sodium ion battery hold much promise as potential alternatives to current lithium ion batteries for energy storage applications. Carbon material is regarded as the most promising anode candidate for sodium ion battery. Particularly, carbon nanosheet with porous structure and high conductivity is expected to have improved sodium ion storage properties. In this paper, we present a two-step pyrolysis-based method for facile …
Intercalation Of Clo4- Into Hopg Investigated By Ec-Stm, Xiao-Yan Hu, Alice Aliwowe, Jia-Wei Yan, Bing-Wei Mao
Intercalation Of Clo4- Into Hopg Investigated By Ec-Stm, Xiao-Yan Hu, Alice Aliwowe, Jia-Wei Yan, Bing-Wei Mao
Journal of Electrochemistry
The electrochemical intercalation and surface morphology of highly oriented pyrolytic graphite (HOPG) electrode in 2 mol⋅L-1 HClO4 were studied by in situ scanning tunneling microscopy (STM) and cyclic voltammetry (CV). Based on the step-height changes observed before and after the intercalation, the effects of different step sites on intercalation are compared. The feasibility, reversibility and speed of intercalation are discussed. The intercalation ofClO4- into HOPG can be divided into three types depending on the number of graphite layers at the step site: When the layers of graphite are more than three, the intercalation becomes feasible; when …
Effect Of Mno2 Content On Electrochemical Capacitance Behavior Of Active Carbon Electrode, Kun Shen, Xian-Liang Zhou, Qi-Shun Duan
Effect Of Mno2 Content On Electrochemical Capacitance Behavior Of Active Carbon Electrode, Kun Shen, Xian-Liang Zhou, Qi-Shun Duan
Journal of Electrochemistry
In this work, the manganese dioxide (MnO2) materials were prepared by solution approach at low temperature, thermal decomposition and electrochemical deposition. The actived carbon (AC) and MnO2composite electrodes were used for aqueous supercapacitors. The morphologies and structures of the prepared materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the electrochemical behaviors were tested by cyclic voltammetry (CV) and galanostatic charge-discharge tests. Electrochemical test data show that the maximum specific capacitances of 151, 172 and 141 F•g-1were obtained with the contents of MnO2being 70, 60 and 70% in …
Fast And Accurate Evaluation Of Lifepo4 Cathode Materials By Single Particle Microelectrode, Fu-Qing Wang, Yi-Min Wei, Yu-Zhuan Su, Bing-Wei Mao, Kai Wu, Feng-Gang Zhao, Chun-Lei Chen, Xing-Lu Li, Jin Chong
Fast And Accurate Evaluation Of Lifepo4 Cathode Materials By Single Particle Microelectrode, Fu-Qing Wang, Yi-Min Wei, Yu-Zhuan Su, Bing-Wei Mao, Kai Wu, Feng-Gang Zhao, Chun-Lei Chen, Xing-Lu Li, Jin Chong
Journal of Electrochemistry
Single particle microelectrode enables to evaluate the electrochemical responses for single particle of active material without binder and conductive agent. Thus, the influences of additive and electrode structure on the electrochemical performance of active materials can be ignored. Furthermore, this technology can be used to evaluate active materials fast. Therefore, single particle microelectrode allows fast and accurate determination of the intrinsic performance of active material. Cyclic voltammogram (CV), cycle performance, and kinetic behavior of LiFePO4 cathode materials were evaluated by the single particle microelectrode. CV curve of LiFePO4 particle with a pair of oxidation and reduction peaks was …
Electrochemical Properties Of Graphene/Porous Nano-Silicon Anode, Chun-Li Li, Guang Yang, Ping Zhang, Zhi-Yu Jiang
Electrochemical Properties Of Graphene/Porous Nano-Silicon Anode, Chun-Li Li, Guang Yang, Ping Zhang, Zhi-Yu Jiang
Journal of Electrochemistry
Porous nano-silicon (Si) was prepared by acid etching Al-Si alloy powder method, and used as an active material for fabricating a grapene/porous nano-Si electrode. The results of SEM and TEM measurements indicated that porous nano-Si powder was uniformly mixed with graphene by emulsification dispersion-ultrasonication method. As an anode for lithium ion battery, the graphene/porous nano-Si electrode presented relatively high performance in 1 mol•L-1LiPF6/EC:DMC = 1:1(by volume) + 1.5% (by mass) VC solution. At the charge and discharge current densities of 0.5A•g-1, the first discharge capacity was 1768.6mAh•g-1with coulombic efficiency of 68.3%. The discharge capacity …
Special Issue: Electrochemistry Of Carbon Materials, Wei Chen
Special Issue: Electrochemistry Of Carbon Materials, Wei Chen
Journal of Electrochemistry
Carbon materials are traditional electrode materials due to their excellent electrical conductivities, high electrochemical stabilities and wide potential windows. Glassy carbon, graphite, various activated charcoals, carbon fibers etc. have been widely used in electrochemistry serving as electrode substrates or supports. In addition to their applications in basic electrochemistry, carbon materials have also played important roles in electrochemical energy storage and conversion. In recent years, various types of carbon structures, from zero-dimensional carbon nanodots, one-dimensional nanotubes, two-dimensional graphene to three-dimensional porous carbons, have attracted increasing attention in electrochemical field. It has been found that carbon materials have outstanding properties as advanced …
Colloidal Ionic Supercapacitors, Kun-Feng Chen, Dong-Feng Xue
Colloidal Ionic Supercapacitors, Kun-Feng Chen, Dong-Feng Xue
Journal of Electrochemistry
Supercapacitors have high power density and long cycle life compared with battery systems, but they still suffer from low energy density at the same time. In order to increase the energy density of supercapacitors, we have developed a new type of pseudocapacitor, called colloidal ion supercapacitor, which can directly use commercial metal salts as electrode materials and form electroactive matter by in-situ electrochemical reactions without the need of additional materials synthesis processes. Colloidal ion supercapacitor can fully utilize the redox reaction of metal cations with multiple oxidation states, which can completely release the stored electrical energy of multiple-valence cations, leading …
Carbon Aerogel/Nickel Foam As Electrode For High-Performance Supercapacitor, Zhong Wu, Xin-Bo Zhang
Carbon Aerogel/Nickel Foam As Electrode For High-Performance Supercapacitor, Zhong Wu, Xin-Bo Zhang
Journal of Electrochemistry
Herein, a facile synthesis has been explored to prepare carbon aerogel/Ni foam. Graphene oxide, resorcinol and formaldehyde serve as precursors and polymerize in-situ on the Ni foam after hydrothermal synthesis at 85 ℃. After lyophilization treatment, the carbon aerogel/Ni foam with porous structure can be obtained. Electrochemical investigations reveal that the carbon aerogel/Ni foam exhibits superior performances in both aqueous and organic electrolytes involving high specific capacitance and long-term cycling stability. The excellent properties can be ascribed to the unique formation and porous structure, which allows more effective transportations of electron and electrolyte ion.
2nd Annual Sustainability Report, Saint Mary's College Of California
2nd Annual Sustainability Report, Saint Mary's College Of California
Sustainability Report
No abstract provided.
Advanced Techniques For Computational And Information Sciences, William Guo, Chih-Cheng Hung, Paul Scheunders, Bor-Chen Kuo
Advanced Techniques For Computational And Information Sciences, William Guo, Chih-Cheng Hung, Paul Scheunders, Bor-Chen Kuo
Faculty Articles
New techniques in computational and information sciences have played an important role in keeping advancing the so called knowledge economy. Advanced techniques have been introduced to or emerging in almost every field of the scientific world for hundreds of years, which has been accelerated since the late 1970s when the advancement in computers and digital technologies brought the world into the Information Era. In addition to the rapid development of computational intelligence and new data fusion techniques in the past thirty years [1–4], mobile and cloud computing, grid computing driven numeric computation models, big data intelligence, and other emerging technologies …
Advances On Managemeng And Key Technology Of Fresh Agricultural Products Cold Chain, Li Kang, Zheng Jianguo, Wu Daqing
Advances On Managemeng And Key Technology Of Fresh Agricultural Products Cold Chain, Li Kang, Zheng Jianguo, Wu Daqing
Food and Machinery
Cold chain has become an important guarantee for world's countries to improve the quality of fresh agricultural products circulation condition, ensure food safety, increase agricultural product added value and promote agricultural products to the international market. But there is a certain gap between our country’s cold chain and developed countries’ in technology, equipment ownership and overall system management level. On the basis of analyzing the research on cold chain management at home and abroad, this paper compares and analyses some of the major issues in cold chain: inventory, logistics system planning, safety and quality, coordination mechanism and the key technical …
Energy-Efficient Selective Activation In Femtocell Networks, Michael Lin, Simone Silvestri, Novella Bartolini, Thomas La Porta
Energy-Efficient Selective Activation In Femtocell Networks, Michael Lin, Simone Silvestri, Novella Bartolini, Thomas La Porta
Computer Science Faculty Research & Creative Works
Provisioning the capacity of wireless networks is difficult when peak load is significantly higher than average load, for example, in public spaces like airports or train stations. Service providers can use femtocells and small cells to increase local capacity, but deploying enough femtocells to serve peak loads requires a large number of femtocells that will remain idle most of the time, which wastes a significant amount of power. To reduce the energy consumption of over-provisioned femtocell networks, we formulate a femtocell selective activation problem, which we formalize as an integer nonlinear optimization problem. Then we introduce Green Femto, a distributed …
System-Wide Prediction Of General, All-Cause, Preventable Hospital Readmissions, Ken Musselman, Brandon Pope, Steve Witz, Zhiyi Tian, Lingsong Zhang, Linda Leon, Ann Davis
System-Wide Prediction Of General, All-Cause, Preventable Hospital Readmissions, Ken Musselman, Brandon Pope, Steve Witz, Zhiyi Tian, Lingsong Zhang, Linda Leon, Ann Davis
RCHE Publications
Existing studies of hospital readmissions typically focus on specific diagnoses, age groups, discharge dispositions, payer classes, or hospitals, and often use small samples. It is not clear how predictive models generated from such studies generalize across diseases, hospitals, or time periods. In this study, a logistic regression model of readmission risk within 30 days based on hospital administrative data was constructed and validated across hospitals and time periods. The hospitals included both general and specialty hospitals such as long-term care, women’s, and children’s hospitals. The administrative data included information on patient’s demographics, diagnoses, procedures, and discharge disposition. Derivation and validation …
Contribution And Impact Of Iisers : A Scientrometric Assessment Of Publications During 2010-14, Visakhi P Dr, Ritu Gupta Miss, B. M. Gupta Dr
Contribution And Impact Of Iisers : A Scientrometric Assessment Of Publications During 2010-14, Visakhi P Dr, Ritu Gupta Miss, B. M. Gupta Dr
Library Philosophy and Practice (e-journal)
This paper analyzes 2542 research publications of the five Indian Institute of Science Education & Research (IISER) published during the last Five years (2010-14), as covered in SCOPUS International database. The study analyses characteristics of these publications such as the publication growth, research impact, national and international collaboration share, contribution and impact of authors and organizations, major areas of research, and preferred channels of research communications and characteristics of higher cited papers. The findings reveal that IISERs publications have witnessed an annual average growth rate of 34.92% and registered an average citation impact per paper of 9.90. About 33.39% and …
Um Establishes Graduate Center For The Study Of Early Learning, Andrew M. Abernathy
Um Establishes Graduate Center For The Study Of Early Learning, Andrew M. Abernathy
University of Mississippi News
Childhood education program to support collaboration among pre-K stakeholders