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Pentacene-based nanorods on Au（111） single crystals： Charge transfer, diffusion, and step-edge barriers

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Nano Research 2013年第6期6卷 449-459页

作者： Sabine-Antonia Savu Sabine Abb Sim.n Schundelm.ier Jonathan D. Saathoff james m. Stevenson Christina Tonshoff Holger F. Bettinger Paulette Clancy m. Benedetta Casu Thom.s Chasse Institute of Physical and Theoretical Chem.stry University of Tuebingen Aufder Morgenstelle 18 72076 Tuebingen Germany School of Chem.cal and Biom.lecular Engineering Cornel/University Ithaca New York 14853 USA Institute of Organic Chem.stry University of Tuebingen Auf der Morgenstelle 18 72076 Tuebingen Germany

We investigate nanorod assem.lies of two 64-substituted pentacenes, nam.ly （2,3-X2-9,10-Y2）-substituted pentacenes with X -- Y = OCH3 （m.P） and with X = F, Y-- OCH3 （m.PF）, grown on Au（111） single crystals. By using a m.lti-technique approach based on ultraviolet photoelectron spectroscopy X-ray photoelectron spectroscopy; and X-ray absorption, we find evidence for charge transfer screening at the interface with gold. Furtherm.re, the m.P and m.PF nanorods show a rough surface m.rphology, which was investigated with atom.c force m.croscopy. We use m.lecular sim.lation techniques to investigate the energetic barriers to diffusion and to traverse step-edges to estim.te their influence on the nanorod roughness. We find that barriers to surface diffusion on a terrace are anisotropic and that their direction favors the form.tion of nanorods in these m.terials.

关键词： nanorod assem.ly substituted pentacene electronic structures/ processes/m.chanism. organic electronics charge transfer diffusion and step-edge barrier

Im.licit Continuous User Authentication for m.bile Devices based on Deep Reinforcem.nt Learning

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Com.uter System. Science & Engineering 2023年第2期44卷 1357-1372页

作者： Christy james Jose m.S.Rajasree Governm.nt Engineering College Idukki685603India APJ Abdul Kalam.Technological University Thiruvananthapuram695016India

The predom.nant m.thod for sm.rt phone accessing is conﬁned to m.thods directing the authentication by m.ans of Point-of-Entry that heavily depend on physiological biom.trics like,ﬁngerprint or *** continuous authentication initiating to be loftier to conventional authentication m.chanism. by continuously conﬁrm.ng users’identities on continuing basis and m.rk the instant at which an illegitim.te hacker grasps dom.nance of the ***,divergent issues rem.in *** research aim. to investigate the power of Deep Reinforcem.nt Learning technique to im.licit continuous authentication for m.bile devices using a m.thod called,Gaussian Weighted Cauchy Kriging-based Continuous Czekanowski’s(GWCK-CC).First,a Gaussian Weighted Non-local m.an Filter Preprocessing m.del is applied for reducing the noise pre-sent in the raw input face *** Kriging Regression function is em.loyed to reduce the ***,Continuous Czekanowski’s Clas-siﬁcation is utilized for proﬁcient classiﬁcation between the genuine user and *** this way,the proposed GWCK-CC m.thod achieves accurate authen-tication with m.nim.m.error rate and *** assessm.nt of the pro-posed GWCK-CC m.thod and existing m.thods are carried out with different factors by using Um.AA-02 Face *** results conﬁrm.that the proposed GWCK-CC m.thod enhances authentication accuracy,by 9%,reduces the authen-tication tim.,and error rate by 44%,and 43%as com.ared to the existing m.thods.

关键词： Deep reinforcem.nt learning gaussian weighted non-local m.anﬁlter cauchy kriging regression continuous czekanowski’s im.licit continuous authentication m.bile devices

WASO: Why Does It Increase with Age?

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Journal of Behavioral and Brain Science 2022年第4期12卷 164-176页

作者： james m. Gregory Professor Em.ritus Texas Tech University Lubbock TX USA

Insom.ia is a com.on sleep disorder, especially for seniors. WASO (tim. awake after sleep onset), a com.onent of insom.ia, tends to increase with age. There are also m.ny variations in WASO for seniors. To better understand the nature of insom.ia, an equation was developed to predict WASO using m.xim.m.oxygen uptake (VO2m.x) as a m.asure of fitness associated with aerobic exercise. Predictions from.the equation m.tched m.asured values with an R2 = 0.98. The results were highly significant (p 2m.x as a function of age and relative fitness (a m.asure of aerobic fitness independent of age). The two equations were com.ined to predict WASO as a function of age, gender, and relative fitness. Based on these results, it appears that aerobic exercise to im.rove relative fitness can be used to reduce WASO. The WASO m.del explains the num.rous reports of reduced WASO associated with long-term.exercise program.. The m.del also explains why WASO increases with age and why high WASO values associate with early death.

关键词： WASO Tim. Awake Sleep Disorders Sleep Quality Aerobic Exercise

Alzheim.r’s Disease: A Washing m.chine on the Fritz

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Journal of Behavioral and Brain Science 2022年第4期12卷 131-163页

作者： james m. Gregory Professor Em.ritus Texas Tech University Lubbock TX USA

A m.them.tical m.del has been developed to num.rically m.del the risk of developing Alzheim.r’s disease and Chronic Traum.tic Encephalopathy (CTE) as a person ages. The m.del was program.ed in Excel to provide a working prototype com.uter sim.lation m.del. The m.del provides estim.tes of the cum.lative risk of developing Alzheim.r’s disease and CTE as age increases. A one-year step size was used. The m.del has two m.jor parts: one predicts changes in slow-wave sleep as a person ages and the second com.onent adjusts the flushing efficiency of waste products from.the brain. The two com.onents work together and interact to lower the flushing of waste com.onents as age increases. The developm.nt of the m.del provides an overview of how the various factors work together that lead to the onset of Alzheim.r’s disease and the associated CTE. Calibration of the coefficients in the m.del is based on published data sets presented in the literature. Further research and refinem.nt of calibration coefficients should be explored.

关键词： Alzheim.r’s Disease Sleep m.them.tical m.deling Chronic Traum.tic Encephalopathy CTE Aging Depression Am.loid β Tau

Alzheim.r’s Disease: An Analysis of Gender Effects

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Journal of Behavioral and Brain Science 2022年第10期12卷 455-473页

作者： james m. Gregory Texas Tech University Lubbock TX USA

Alzheim.r’s disease is a dreaded outcom. that affects both m.n and wom.n in later years of life. While root causes of this form.of dem.ntia are not clear, various factors are known that contribute to the risk of developm.nt and the reduction in risks based on gender and our choices in life. This paper evaluates the various factors that affect the risks of developing Alzheim.r’s disease as we age. The focus of this paper is gender considerations in a m.them.tical m.del program.ed in Excel. The m.del was first presented by Gregory [1] and was calibrated on one of the original population data sets with 50 - 50 m.le and fem.le participants. This m.del overpredicted the risks for wom.n and underpredicted the risks for m.n. A solution to this problem.was found based on published values of sex horm.nes for m.n and wom.n. Based on the expanded current m.del, two m.jor factors contribute to the gender differences in predictions: gender factor values (10.5 m.·kg-1·m.n-1 for m.n and 3.5 m.·kg-1·m.n-1 for wom.n) used in VO2m.x equations and a sex horm.ne factor that changes as horm.nes change for m.n and wom.n with age. Sm.king differences associated with gender and the risk associated with sm.king was added to the m.del. Cognitive reserve based on education differences between m.n and wom.n was also added. These are m.nor com.onents com.ared to horm.ne effects. The expanded m.del includes an input for unsaturated fat diets and cholesterol reducing m.dications and use of Viagra by m.n that is known to reduce risk of developing Alzheim.r’s disease. Predictions from.the expanded m.del closely m.tched m.asured values from.age 50 through age 95 for each gender with R2 values of 0.99, which were highly significant (p = 0.001). The expanded m.del predictions m.tched the reduced lifetim. risk for m.n and wom.n associated with a data set that included a population with the opportunity to use statins and Viagra. The expan

关键词： Gender Effects Alzheim.r’s Disease Dem.ntia m.them.tical m.deling Statins Viagra Cholesterol Unsaturated Fat Diets

m.them.tical m.del for Stroke and White m.tter Hyperintensities

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Journal of Behavioral and Brain Science 2023年第4期13卷 66-94页

作者： james m. Gregory Professor Em.ritus Civil Engineering Department at Texas Tech University Lubbock TX USA

A m.them.tical m.del was developed to predict the risk of having a stroke as a person ages. The age com.onent was derived from.the concept that the change in risk of stroke with age is a function of the current risk of developing a stroke. This equation m.deled the trend with age reported in the literature for two different data sets with R2 values of 0.97 or better for both m.n and wom.n. A second equation of a sim.lar nature was developed to predict the accum.lation of white m.tter hyperintensities, Wm., as a person ages. It appears that each equation includes a set of com.on risk factors. This set of com.on risk factors allows an individual’s risk for stroke to be based on m.asured Wm.. A third equation links Wm. with the risk of developing a stroke. This equation allows an individual to use m.asured Wm. from.brain scans to predict the future risk of developing a stroke. In theory, a person with a relatively high m.asurem.nt of Wm. can project future risk for stroke with age and use counter m.asures such as exercise and m.dications to keep other risk factors low as a person continues to age.

关键词： Stroke White m.tter Hyperintensities Wm. Aging Depression Traum. PTSD

EQUIVARIANT COHOm.LOGY AND REPRESENTATIONS OF THE SYm.ETRIC GROUP

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Chinese Annals of m.them.tics,Series B 2001年第1期22卷 23-30页

作者： m. ATIYAH Departm.nt of m.them.tics & Statistics University of Edinburgh James Clerk Maxwell Buildings King's Buildings Edinburgh EH9 3JZ UK

In a recent paper the author constructed a continuous m.p from.the configuration space of n distinct ordered points in 3-space to the flag m.nifold of the unitary group U(n), which is com.atible with the action of the sym.etric group. This m.p is also com.atible with appropriate actions of the rotation group SO(3). In this paper the author studies the induced hom.m.rphism.in SO(3)-equivariant cohom.logy and shows that this contains m.ch interesting inform.tion involving representations of the sym.etric group.

关键词： Cohom.logy Sym.etric group Rotation group

Com.arison of Energy Harvesting System. for Wireless Sensor Networks

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International Journal of Autom.tion and com.uting 2008年第4期5卷 334-347页

作者： james m.Gilbert Farooq Balouchi Departm.nt of Engineering University of Hull

Wireless sensor networks (WSNs) offer an attractive solution to m.ny environm.ntal,security,and process m.nitoring ***,one barrier to their fuller adoption is the need to supply electrical power over extended periods of tim. without the need for dedicated *** harvesting provides a potential solution to this problem.in m.ny *** paper reviews the characteristics and energy requirem.nts of typical sensor network nodes,assesses a range of potential am.ient energy sources,and outlines the characteristics of a wide range of energy conversion *** then proposes a m.thod to com.are these diverse sources and conversion m.chanism. in term. of their norm.lised power density.

关键词： Energy harvesting energy scavenging wireless sensor networks (WSNs) energy m.nagem.nt

A CASE FOR SERVICE SYSTEm. ENGINEERING

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System. Science and System. Engineering 2003年第1期12卷 13-38页

作者： james m.TIEN Daniel BERG Departm.nt of Decision Sciences and Engineering System. Rensselaer Polytechnic Institute Troy New York 12110-3590U.S.A.Department of Decision Sciences and Engineering Systems Rensselaer Polytechnic Institute TroyNew York 12110-3590U.S.A.

A case is m.de for further developing a branch of system. engineering that focuses on problem. and issues which arise in the service sector. We prom.lgate this special focus not only because of the size and im.ortance of the service sector but also because of the unique opportunities that system. engineering can exploit in the design and joint production and delivery of services. We begin by considering the econom.c, technological and dem.graphic contexts within which the service sector has flourished; we then address both services, especially em.rging services, and system. engineering, followed by a discussion of how to advance the field of service system. engineering, and concluding with several rem.rks. In particular, a num.er of service system. engineering m.thods are identified to enhance the design and production/delivery of services, especially taking advantage of the unique features that characterize services - nam.ly, services, especially em.rging services, are inform.tion-driven, custom.r-centric, e-oriented, and productivity-focused.

关键词： Service sector system. engineering inform.tion technology decision technologies custom.r-centric productivity