8 CFR 214.12 - Preliminary enrollment of schools in the Student and Exchange Visitor Information System (SEVIS).

Code of Federal Regulations, 2010 CFR

2010-01-01

... of schools in the Student and Exchange Visitor Information System (SEVIS). (a) Private elementary and private secondary schools, public high schools, post-secondary schools, language schools, and vocational... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false Preliminary enrollment of schools in the...

Zoo Visitor Knowledge and Attitudes toward Gorillas and Chimpanzees

ERIC Educational Resources Information Center

Lukas, K. E.; Ross, S. R.

2005-01-01

The authors conducted an evaluation of visitor knowledge and conservation attitudes toward African apes at Chicago's Lincoln Park Zoo. Using S. R. Kellert's and J. Dunlap's (1989) analysis of zoo visitor knowledge and attitudes as a model, they modified and administered a survey to 1,000 visitors to the ape facility. On average, visitors correctly…

22 CFR Appendix B to Part 62 - Exchange Visitor Program Services, Exchange-Visitor Program Application

Code of Federal Regulations, 2010 CFR

2010-04-01

...—Public Administration; 11—Training, Other Reapplication and Redesignation: If your organization is making...-Visitor Program Application B Appendix B to Part 62 Foreign Relations DEPARTMENT OF STATE PUBLIC DIPLOMACY... (Name) Title Subscribed and sworn to before me this _______ day of _______, 19__. Notary Public...

Precise gene editing of chicken Na+/H+ exchange type 1 (chNHE1) confers resistance to avian leukosis virus subgroup J (ALV-J).

PubMed

Lee, Hong Jo; Lee, Kyung Youn; Jung, Kyung Min; Park, Kyung Je; Lee, Ko On; Suh, Jeong-Yong; Yao, Yongxiu; Nair, Venugopal; Han, Jae Yong

2017-12-01

Avian leukosis virus subgroup J (ALV-J), first isolated in the late 1980s, has caused economic losses to the poultry industry in many countries. As all chicken lines studied to date are susceptible to ALV infection, there is enormous interest in developing resistant chicken lines. The ALV-J receptor, chicken Na + /H + exchange 1 (chNHE1) and the critical amino acid sequences involved in viral attachment and entry have already been characterized. However, there are no reported attempts to induce resistance to the virus by targeted genome modification of the receptor sequences. In an attempt to induce resistance to ALV-J infection, we used clustered regularly interspaced short palindromic repeats (CRISPR)-associated (CRISPR/Cas9)-based genome editing approaches to modify critical residues of the chNHE1 receptor in chicken cells. The susceptibility of the modified cell lines to ALV-J infection was examined using enhanced green fluorescent protein (EGFP)-expressing marker viruses. We showed that modifying the chNHE1 receptor by artificially generating a premature stop codon induced absolute resistance to viral infection, with mutations of the tryptophan residue at position 38 (Trp38) being very critical. Single-stranded oligodeoxynucleotide (ssODN)-mediated targeted recombination of the Trp38 region revealed that deletions involving the Trp38 residue were most effective in conferring resistance to ALV-J. Moreover, protein structure analysis of the chNHE1 receptor sequence suggested that its intrinsically disordered region undergoes local conformational changes through genetic alteration. Collectively, these results demonstrate that targeted mutations on chNHE1 alter the susceptibility to ALV-J and the technique is expected to contribute to develop disease-resistant chicken lines. Copyright © 2017 Elsevier Ltd. All rights reserved.

Investigation of possible phase transition of the frustrated spin-1/2 J 1-J 2-J 3 model on the square lattice.

PubMed

Hu, Ai-Yuan; Wang, Huai-Yu

2017-09-05

The frustrated spin-1/2 J 1 -J 2 -J 3 antiferromagnet with exchange anisotropy on the two-dimensional square lattice is investigated. The exchange anisotropy is presented by η with 0 ≤ η < 1. The effects of the J 1 , J 2 , J 3 and anisotropy on the possible phase transition of the Néel state and collinear state are studied comprehensively. Our results indicate that for J 3  > 0 there are upper limits [Formula: see text] and η c values. When 0 < J 3  ≤ [Formula: see text] and 0 ≤ η ≤ η c , the Néel and collinear states have the same order-disorder transition point at J 2  = J 1 /2. Nevertheless, when the J 3 and η values beyond the upper limits, it is a paramagnetic phase at J 2  = J 1 /2. For J 3  < 0, in the case of 0 ≤ η < 1, the two states always have the same critical temperature as long as J 2  = J 1 /2. Therefore, for J 2  = J 1 /2, under such parameters, a first-order phase transition between the two states for these two cases below the critical temperatures may occur. When J 2  ≠ J 1 /2, the Néel and collinear states may also exist, while they have different critical temperatures. When J 2  > J 1 /2, a first-order phase transition between the two states may also occur. However, for J 2  < J 1 /2, the Néel state is always more stable than the collinear state.

22 CFR 41.62 - Exchange visitors.

Code of Federal Regulations, 2011 CFR

2011-04-01

... Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND... to SEVIS or ISEAS prior to the issuance of a J-1 or J-2 visa. Evidence of the payment of any... Consular Database or direct access to SEVIS. Upon issuance of a J-1 or J-2 visa, notification of such...

22 CFR 41.62 - Exchange visitors.

Code of Federal Regulations, 2013 CFR

2013-04-01

... Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND... to SEVIS or ISEAS prior to the issuance of a J-1 or J-2 visa. Evidence of the payment of any... Consular Database or direct access to SEVIS. Upon issuance of a J-1 or J-2 visa, notification of such...

22 CFR 41.62 - Exchange visitors.

Code of Federal Regulations, 2012 CFR

2012-04-01

... Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND... to SEVIS or ISEAS prior to the issuance of a J-1 or J-2 visa. Evidence of the payment of any... Consular Database or direct access to SEVIS. Upon issuance of a J-1 or J-2 visa, notification of such...

22 CFR 41.62 - Exchange visitors.

Code of Federal Regulations, 2010 CFR

2010-04-01

... Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND... to SEVIS or ISEAS prior to the issuance of a J-1 or J-2 visa. Evidence of the payment of any... Consular Database or direct access to SEVIS. Upon issuance of a J-1 or J-2 visa, notification of such...

22 CFR 41.62 - Exchange visitors.

Code of Federal Regulations, 2014 CFR

2014-04-01

... Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND... to SEVIS or ISEAS prior to the issuance of a J-1 or J-2 visa. Evidence of the payment of any... Consular Database or direct access to SEVIS. Upon issuance of a J-1 or J-2 visa, notification of such...

Numerical modeling of a 2K J-T heat exchanger used in Fermilab Vertical Test Stand VTS-1

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gupta, Prabhat Kumar; Rabehl, Roger

2014-07-01

Fermilab Vertical Test Stand-1 (VTS-1) is in operation since 2007 for testing the superconducting RF cavities at 2 K. This test stand has single layer coiled finned tubes heat exchanger before J-T valve. A finite difference based thermal model has been developed in Engineering Equation Solver (EES) to study its thermal performance during filling and refilling to maintain the constant liquid level of test stand. The model is also useful to predict its performance under other various operating conditions and will be useful to design the similar kind of heat exchanger for future needs. Present paper discusses the different operationalmore » modes of this heat exchanger and its thermal characteristics under these operational modes. Results of this model have also been compared with the experimental data gathered from the VTS-1 heat exchanger and they are in good agreement with the present model.« less

IMPLEMENTING AN ATTACHMENT-BASED PARENTING INTERVENTION WITHIN HOME-BASED EARLY HEAD START: HOME-VISITORS' PERCEPTIONS AND EXPERIENCES.

PubMed

West, Allison L; Aparicio, Elizabeth M; Berlin, Lisa J; Jones Harden, Brenda

2017-07-01

Implementation of evidence-based interventions in "real-world" settings is enhanced when front-line staff view the intervention as acceptable, appropriate, and feasible. This qualitative study addresses Early Head Start (EHS) home visitors' perceptions and experiences of an evidence-based parenting intervention, the Attachment and Biobehavioral Catch-up program (M. Dozier, O. Lindhiem, & J. Ackerman, 2005), when added to EHS services as usual within the context of a research-practice partnership. Thematic analysis of in-depth, qualitative interviews indicates that home visitors experienced the intervention as positive and helpful for EHS families. Some challenges included scheduling and uncertainty regarding the goals of the intervention. Concerns over participation in the research centered on information exchange, confidentiality, and time limitations. © 2017 Michigan Association for Infant Mental Health.

17 CFR 270.17j-1 - Personal investment activities of investment company personnel.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 17 Commodity and Securities Exchanges 3 2010-04-01 2010-04-01 false Personal investment activities of investment company personnel. 270.17j-1 Section 270.17j-1 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED) RULES AND REGULATIONS, INVESTMENT COMPANY ACT OF 1940 § 270...

17 CFR 270.17j-1 - Personal investment activities of investment company personnel.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 17 Commodity and Securities Exchanges 3 2011-04-01 2011-04-01 false Personal investment activities of investment company personnel. 270.17j-1 Section 270.17j-1 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED) RULES AND REGULATIONS, INVESTMENT COMPANY ACT OF 1940 § 270...

Two-Dimensional J eff = 1 / 2 Antiferromagnetic Insulator Unraveled from Interlayer Exchange Coupling in Artificial Perovskite Iridate Superlattices

DOE PAGES

Hao, Lin; Meyers, D.; Frederick, Clayton; ...

2017-07-14

We report an experimental investigation of the two-dimensional J eff=1/2 antiferromagnetic Mott insulator by varying the interlayer exchange coupling in [(SrIrO 3) 1, (SrTiO 3) m] (m=1, 2 and 3) superlattices. Although all samples exhibited an insulating ground state with long-range magnetic order, temperature-dependent resistivity measurements showed a stronger insulating behavior in the m = 2 and m = 3 samples than the m = 1 sample which displayed a clear kink at the magnetic transition. This difference indicates that the blocking effect of the excessive SrTiO 3 layer enhances the effective electron-electron correlation and strengthens the Mott phase. Themore » significant reduction of the Néel temperature from 150 K for m = 1 to 40 K for m = 2 demonstrates that the long-range order stability in the former is boosted by a substantial interlayer exchange coupling. Resonant x-ray magnetic scattering revealed that the interlayer exchange coupling has a switchable sign, depending on the SrTiO 3 layer number m, for maintaining canting-induced weak ferromagnetism. In conclusion, the nearly unaltered transition temperature between the m = 2 and the m = 3 demonstrated that we have realized a two-dimensional antiferromagnet at finite temperatures with diminishing interlayer exchange coupling.« less

Two-Dimensional J eff = 1 / 2 Antiferromagnetic Insulator Unraveled from Interlayer Exchange Coupling in Artificial Perovskite Iridate Superlattices

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hao, Lin; Meyers, D.; Frederick, Clayton

We report an experimental investigation of the two-dimensional J eff=1/2 antiferromagnetic Mott insulator by varying the interlayer exchange coupling in [(SrIrO 3) 1, (SrTiO 3) m] (m=1, 2 and 3) superlattices. Although all samples exhibited an insulating ground state with long-range magnetic order, temperature-dependent resistivity measurements showed a stronger insulating behavior in the m = 2 and m = 3 samples than the m = 1 sample which displayed a clear kink at the magnetic transition. This difference indicates that the blocking effect of the excessive SrTiO 3 layer enhances the effective electron-electron correlation and strengthens the Mott phase. Themore » significant reduction of the Néel temperature from 150 K for m = 1 to 40 K for m = 2 demonstrates that the long-range order stability in the former is boosted by a substantial interlayer exchange coupling. Resonant x-ray magnetic scattering revealed that the interlayer exchange coupling has a switchable sign, depending on the SrTiO 3 layer number m, for maintaining canting-induced weak ferromagnetism. In conclusion, the nearly unaltered transition temperature between the m = 2 and the m = 3 demonstrated that we have realized a two-dimensional antiferromagnet at finite temperatures with diminishing interlayer exchange coupling.« less

The Exchange Visitor Program: Options for Review and Revision. A Position Paper Prepared by NAFSA: Association of International Educators for the Task Force on Regulatory Reform, United States Information Agency.

ERIC Educational Resources Information Center

National Association for Foreign Student Affairs, Washington, DC.

This position paper addresses four general areas of concern relating to the Exchange Visitor Program (EVP) and discusses specific proposals and related foreign policy implications. The areas of concern are as follows: (1) the role of the Immigration and Naturalization Service in EVP; (2) the relationship between the United States Information…

77 FR 20687 - 30-Day Notice of Proposed Information Collection: Form DS-3097, Exchange Visitor Program Annual...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-05

... the proposed information collection and supporting documents from Robin J. Lerner, Deputy Assistant.... Robin J. Lerner, Deputy Assistant Secretary for Private Sector Exchange, Bureau of Educational and...

Public Outreach at Appalachian State University's Dark Sky Observatory Cline Visitor Center

NASA Astrophysics Data System (ADS)

Caton, Daniel B.; Hawkins, L.; Smith, A. B.

2012-01-01

With the recent completion of the Cline Visitor Center we have begun a program of public nights at our Dark Sky Observatory's 32-inch telescope. Events are ticketed online using an inexpensive commercial ticketing service and are limited to two groups of 60 visitors per night that arrive for 1.5-hour sessions. We are installing two large (70-inch) flat panel displays in the Center and planning additional exhibits to entertain visitors while they await their turn at the telescope's eyepiece. The facility is fully ADA compliant, with eyepiece access via a DFM Engineering Articulated Relay Eyepiece, and a wheelchair lift if needed. We present some of our experiences in this poster and encourage readers to offer suggestions. The Visitor Center was established with the support of Mr. J. Donald Cline, for which we are very grateful. The telescope was partially funded by the National Science Foundation.

A polyclonal antibody against extracellular loops 1 of chNHE1 blocks avian leukosis virus subgroup J infection.

PubMed

Meng, Wei; Zhou, Defang; Li, Chengui; Wang, Guihua; Huang, Libo; Cheng, Ziqiang

2018-05-02

Avian leukosis virus subgroup J (ALV-J), an oncogenic retrovirus, induces myelocytomas and other various tumors, leading to great economical losses in poultry industry. It is a great challenge to develop effective preventive methods for ALV-J control due to its antigenic variations in the variable regions of envelope. In present study, we generated a mouse polyclonal antibody targeting the first extracellular loop (ECL1) of chicken Na + /H + exchanger isoform 1 (chNHE1), the receptor of ALV-J, to block ALV-J infection in vitro and in vivo. In ALV-J infected DF-1 cells, chNHE1 expression and the intracellular pH (pHi) were up-regulated with "wave" pattern, indicating that the disequilibrium of ALV-J infected cells associated with chNHE1. Next, we validated that ALV-J infection was significantly blocked with time dependent after treating with anti-ECL1 antibody and accordingly the pHi value were recovered, indicating the blockage of ALV-J infection did not affect Na + /H + exchange. Furthermore, in anti-ECL1 antibody treatment chickens that infected by ALV-J, weight gain and immune organs were recovered, and viral loads were significantly decreased, and the tissue injury and inflammation were reduced significantly from 21 to 35 days of age. The study demonstrated that anti-ECL1 antibody effectively blocks ALV-J infection without affecting Na + /H + exchange, and sheds light on a novel strategy for retroviruses control. Copyright © 2018 Elsevier Ltd. All rights reserved.

Visitor characteristics and alcohol-based hand sanitizer dispenser locations at the hospital entrance: Effect on visitor use rates.

PubMed

Hobbs, Mary A; Robinson, Susan; Neyens, David M; Steed, Connie

2016-03-01

Hospital visitors' hand hygiene (HH) is an important aspect of preventing health care-associated infections, but little is known about visitors' use of alcohol-based hand sanitizers (AHS). The study aim was to examine if use of AHS is influenced by visitor characteristics and the location of AHS within the lobby of a large hospital. An observational study was conducted with AHS placed in 3 different locations. The data included visitor characteristics and if AHS were used. The results suggest that visitors are 5.28 times (95% confidence interval [CI], 3.68-7.82) more likely to use AHS when dispensers are located in the middle of the lobby with limited landmarks or barriers, 1.35 times more likely to use the AHS in the afternoon compared with the morning, or when they are younger visitors (adjusted odds ratio, 1.47; 95% CI, 1.09-1.97). Individuals in a group are more likely (adjusted odds ratio, 1.39; 95% CI, 1.06-1.84) to use AHS. In addition to location, time of day, and age, there is a group effect that results in visitors being more likely to use AHS when in a group. The increased use related to groups may serve as a mechanism to encourage visitor HH. The results suggest future research opportunities to investigate the effect of group dynamics and social pressure on visitor AHS use and to identify strategies for improving visitor HH. Copyright © 2015 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

Residues 28 to 39 of the Extracellular Loop 1 of Chicken Na+/H+ Exchanger Type I Mediate Cell Binding and Entry of Subgroup J Avian Leukosis Virus.

PubMed

Guan, Xiaolu; Zhang, Yao; Yu, Mengmeng; Ren, Chaoqi; Gao, Yanni; Yun, Bingling; Liu, Yongzhen; Wang, Yongqiang; Qi, Xiaole; Liu, Changjun; Cui, Hongyu; Zhang, Yanping; Gao, Li; Li, Kai; Pan, Qing; Zhang, Baoshan; Wang, Xiaomei; Gao, Yulong

2018-01-01

Chicken Na + /H + exchanger type I (chNHE1), a multispan transmembrane protein, is a cellular receptor of the subgroup J avian leukosis virus (ALV-J). To identify the functional determinants of chNHE1 responsible for the ALV-J receptor activity, a series of chimeric receptors was created by exchanging the extracellular loops (ECL) of human NHE1 (huNHE1) and chNHE1 and by ECL replacement with a hemagglutinin (HA) tag. These chimeric receptors then were used in binding and entry assays to map the minimal ALV-J gp85-binding domain of chNHE1. We show that ECL1 of chNHE1 (chECL1) is the critical functional ECL that interacts directly with ALV-J gp85; ECL3 is also involved in ALV-J gp85 binding. Amino acid residues 28 to 39 of the N-terminal membrane-proximal region of chECL1 constitute the minimal domain required for chNHE1 binding of ALV-J gp85. These residues are sufficient to mediate viral entry into ALV-J nonpermissive cells. Point mutation analysis revealed that A30, V33, W38, and E39 of chECL1 are the key residues mediating the binding between chNHE1 and ALV-J gp85. Further, the replacement of residues 28 to 39 of huNHE1 with the corresponding chNHE1 residues converted the nonfunctional ALV-J receptor huNHE1 to a functional one. Importantly, soluble chECL1 and huECL1 harboring chNHE1 residues 28 to 39 both could effectively block ALV-J infection. Collectively, our findings indicate that residues 28 to 39 of chNHE1 constitute a domain that is critical for receptor function and mediate ALV-J entry. IMPORTANCE chNHE1 is a cellular receptor of ALV-J, a retrovirus that causes infections in chickens and serious economic losses in the poultry industry. Until now, the domains determining the chNHE1 receptor function remained unknown. We demonstrate that chECL1 is critical for receptor function, with residues 28 to 39 constituting the minimal functional domain responsible for chNHE1 binding of ALV-J gp85 and efficiently mediating ALV-J cell entry. These residues are

Visitor survey results for the Souris River Loop National Wildlife Refuges: Completion report

USGS Publications Warehouse

Sexton, Natalie R.; Koontz, Lynne; Stewart, Susan C.

2005-01-01

In support of the CCP planning effort for the Souris River Loop Refuges, the Policy Analysis and Science Assistance Branch/Fort Collins Science Center (PASA) of the U.S. Geological Survey conducted visitor surveys at three refuges in North Dakota: Des Lacs, J. Clark Salyer, and Upper Souris National Wildlife Refuges. This research was conducted in order to assess visitor experience, perceptions, and preferences and visitor spending related to recreation on these public lands. This baseline information and input is needed by the refuges to inform their CCP process. Specifically, this survey research assesses the characteristics of visitors and their trips, the activities in which visitors engage while on the refuge, details regarding their trip experience, as well as their preferences and attitudes about various management features, including existing and future conditions. 

Wilderness visitors, experiences, and visitor management

Treesearch

David N. Cole; Stephen F. McCool

2000-01-01

This paper provides an overview of the Wilderness science in a time of change conference-Volume 4: Wilderness visitors, experiences, and visitor management. Wilderness areas are managed to protect their wilderness character, but they also provide opportunities for recreation use. Decades ago, relatively few people sought wilderness experiences, and...

22 CFR 62.29 - Government visitors.

Code of Federal Regulations, 2014 CFR

2014-04-01

... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Government visitors. 62.29 Section 62.29... Program Provisions § 62.29 Government visitors. (a) Purpose. The government visitor category is for the exclusive use of the U.S. federal, state, or local government agencies. Programs under this section are for...

22 CFR 62.29 - Government visitors.

Code of Federal Regulations, 2012 CFR

2012-04-01

... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Government visitors. 62.29 Section 62.29... Program Provisions § 62.29 Government visitors. (a) Purpose. The government visitor category is for the exclusive use of the U.S. federal, state, or local government agencies. Programs under this section are for...

22 CFR 62.29 - Government visitors.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Government visitors. 62.29 Section 62.29... Program Provisions § 62.29 Government visitors. (a) Purpose. The government visitor category is for the exclusive use of the U.S. federal, state, or local government agencies. Programs under this section are for...

22 CFR 62.29 - Government visitors.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Government visitors. 62.29 Section 62.29... Program Provisions § 62.29 Government visitors. (a) Purpose. The government visitor category is for the exclusive use of the U.S. federal, state, or local government agencies. Programs under this section are for...

22 CFR 62.29 - Government visitors.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Government visitors. 62.29 Section 62.29... Program Provisions § 62.29 Government visitors. (a) Purpose. The government visitor category is for the exclusive use of the U.S. federal, state, or local government agencies. Programs under this section are for...

Visitor Behavior at Melbourne Zoo.

ERIC Educational Resources Information Center

Churchman, David

The potential educational impact of the Melbourne Zoo (Australia) for recreational visitors was examined in this study using time as the major dependent variable. Specific goals included: (1) assessment of the potential cognitive and affective educational impact of zoos on recreational visitors; (2) determination of the temporal and spatial…

Highly anisotropic exchange interactions of j eff = 1 2 iridium moments on the fcc lattice in La 2 B IrO 6   ( B = Mg , Zn )

DOE PAGES

Aczel, A. A.; Cook, A. M.; Williams, T. J.; ...

2016-06-20

Here we have performed inelastic neutron scattering (INS) experiments to investigate the magnetic excitations in the weakly distorted face-centered-cubic (fcc) iridate double perovskites Lamore » $$_2$$ZnIrO$$_6$$ and La$$_2$$MgIrO$$_6$$, which are characterized by A-type antiferromagnetic ground states. The powder inelastic neutron scattering data on these geometrically frustrated $$j_{\\rm eff}=1/2$$ Mott insulators provide clear evidence for gapped spin wave excitations with very weak dispersion. The INS results and thermodynamic data on these materials can be reproduced by conventional Heisenberg-Ising models with significant uniaxial Ising anisotropy and sizeable second-neighbor ferromagnetic interactions. Such a uniaxial Ising exchange interaction is symmetry-forbidden on the ideal fcc lattice, so that it can only arise from the weak crystal distortions away from the ideal fcc limit. This may suggest that even weak distortions in $$j_{\\rm eff}=1/2$$ Mott insulators might lead to strong exchange anisotropies. More tantalizingly, however, we find an alternative viable explanation of the INS results in terms of spin models with a dominant Kitaev interaction. In contrast to the uniaxial Ising exchange, the highly-directional Kitaev interaction is a type of exchange anisotropy which is symmetry-allowed even on the ideal fcc lattice. The Kitaev model has a magnon gap induced by quantum order-by-disorder, while weak anisotropies of the Kitaev couplings generated by the symmetry-lowering due to lattice distortions can pin the order and enhance the magnon gap. In conclusion, our findings highlight how even conventional magnetic orders in heavy transition metal oxides may be driven by highly-directional exchange interactions rooted in strong spin-orbit coupling.« less

26 CFR 1.1031(j)-1 - Exchanges of multiple properties.

Code of Federal Regulations, 2014 CFR

2014-04-01

... ($4000) exceeds the fair market value of automobile B ($2950) by that amount. (iii) K recognizes gain on...), or $1050. (iv) The total amount of gain recognized by K in the exchange is the sum of the gains... requires a property-by-property comparison for computing the gain recognized and basis of property received...

26 CFR 1.1031(j)-1 - Exchanges of multiple properties.

Code of Federal Regulations, 2011 CFR

2011-04-01

... ($4000) exceeds the fair market value of automobile B ($2950) by that amount. (iii) K recognizes gain on...), or $1050. (iv) The total amount of gain recognized by K in the exchange is the sum of the gains... requires a property-by-property comparison for computing the gain recognized and basis of property received...

26 CFR 1.1031(j)-1 - Exchanges of multiple properties.

Code of Federal Regulations, 2013 CFR

2013-04-01

... ($4000) exceeds the fair market value of automobile B ($2950) by that amount. (iii) K recognizes gain on...), or $1050. (iv) The total amount of gain recognized by K in the exchange is the sum of the gains... requires a property-by-property comparison for computing the gain recognized and basis of property received...

26 CFR 1.1031(j)-1 - Exchanges of multiple properties.

Code of Federal Regulations, 2010 CFR

2010-04-01

... ($4000) exceeds the fair market value of automobile B ($2950) by that amount. (iii) K recognizes gain on...), or $1050. (iv) The total amount of gain recognized by K in the exchange is the sum of the gains... property-by-property comparison for computing the gain recognized and basis of property received in a like...

26 CFR 1.1031(j)-1 - Exchanges of multiple properties.

Code of Federal Regulations, 2012 CFR

2012-04-01

... ($4000) exceeds the fair market value of automobile B ($2950) by that amount. (iii) K recognizes gain on...), or $1050. (iv) The total amount of gain recognized by K in the exchange is the sum of the gains... requires a property-by-property comparison for computing the gain recognized and basis of property received...

Visitors Center activities

NASA Technical Reports Server (NTRS)

1997-01-01

More than 2,000 children and adults from Mississippi, Louisiana and Alabama recently build a 12-foot tall Space Shuttle made entirely from tiny LEGO bricks at the John C. Stennis Space Center Visitors Center in South Mississippi. The shuttle was part of an exhibit titled 'Travel in Space' World Show which depicts the history of flight and space travel from the Wright brothers to future generations of space vehicles. For more information concerning hours of operation or Visitors Center educational programs, call 1-800-237-1821 in Mississippi and Louisiana or (601) 688-2370.

Visitor's Computer Guidelines | CTIO

Science.gov Websites

Visitor's Computer Guidelines Network Connection Request Instruments Instruments by Telescope IR Instruments Logs Tololo Kaxis Webcam NOAO Newsletters NOAO Data Archive Astronomical Links Visitor's Computer ‹› You are here CTIO Home » Astronomers » Visitor's Computer Guidelines Visitor's Computer

Visitor Transportation Study: Report on Urban Visitor Transportation Services.

DOT National Transportation Integrated Search

2004-02-28

This report is part of a program of research designed to assist the National Park Service units of central Washington, DC, in : their efforts to manage visitor mobility, reduce the negative environmental impacts of visitor transportation, and plan fo...

Visitors Center activities

NASA Technical Reports Server (NTRS)

1997-01-01

Astronaut Katherine Hire and LEGO-Master Model Builders assisted children from Mississippi, Louisiana and Mississippi in the building of a 12-foot tall Space Shuttle made entirely from tiny LEGO bricks at the John C. Stennis Space Center Visitors Center in South Mississippi. The shuttle was part of an exhibit titled ' Travel in Space' World Show which depicts the history of flight and space travel from the Wright brothers to future generations of space vehicles. For more information concerning hours of operation or Visitors Center educational programs, call 1-800-237-1821 in Mississippi and Louisiana or (601) 688-2370.

Visitor injuries in Hawai'i.

PubMed

Ho, Hao Chih; Speck, Cora S R; Kumasaki, Jennifer

2009-12-01

Over seven million tourists visit the Hawaiian Islands each year. Popular visitor activities such as surfing, scuba diving, ocean kayaking, parasailing, bicycle tours and hiking each have risks of serious injury. This study reviews visitors' activities that led to serious injuries requiring treatment at the state's only trauma center while vacationing in Hawai'i. A retrospective electronic medical record review was conducted of all visitor and resident trauma patients admitted to The Queen's Medical Center (QMC) from January 2002-December 2006. Patient demographics, injury type and severity, mechanism of injury, and discharge status were collected and analyzed. A total of 8244 patients were admitted to QMC for major traumatic injuries over the five year study period. Of these, 466 (5.7%) were visitors. The most common mechanisms of visitor injuries were falls (23.6%), water-related injuries (22.8%), motor vehicle crashes (18.7%), motorcycle, moped, and recreational vehicle crashes (12.2%), assaults (7.3%), and bicycle crashes (4.0%). A disproportionate number of visitors sustained serious injuries while engaging in water-related activities: Visitors account for only 12.6% of the population on any given day, yet comprise 44.2% of the total admissions for Hawai'i's water-related injuries. Head and spine injuries make up over two-thirds (68.2%) of these water-related visitor injuries. As a general category, falls were responsible for the highest number of visitor trauma admissions. Of the recreational activities leading to high numbers of trauma admissions, water-related activities are the leading causes of serious injuries among visitors to Hawai'i. Water-related injury rates are significantly higher for Hawai'i's visitors than residents. Water safety education for visitors should be developed in multiple languages to educate and protect Hawai'i's visitors and visitor industry.

ψ (2 S ) versus J /ψ suppression in proton-nucleus collisions from factorization violating soft color exchanges

NASA Astrophysics Data System (ADS)

Ma, Yan-Qing; Venugopalan, Raju; Watanabe, Kazuhiro; Zhang, Hong-Fei

2018-01-01

We argue that the large suppression of the ψ (2 S ) inclusive cross section relative to the J /ψ inclusive cross section in proton-nucleus (p+A) collisions can be attributed to factorization breaking effects in the formation of quarkonium. These factorization breaking effects arise from soft color exchanges between charm-anticharm pairs undergoing hadronization and comoving partons that are long lived on time scales of quarkonium formation. We compute the short distance pair production of heavy quarks in the color glass condensate (CGC) effective field theory and employ an improved color evaporation model (ICEM) to describe their hadronization into quarkonium at large distances. The combined CGC+ICEM model provides a quantitative description of J /ψ and ψ (2 S ) data in proton-proton (p+p) collisions from both RHIC and the LHC. Factorization breaking effects in hadronization, due to additional parton comovers in the nucleus, are introduced heuristically by imposing a cutoff Λ , representing the average momentum kick from soft color exchanges, in the ICEM. Such soft exchanges have no perceptible effect on J /ψ suppression in p+A collisions. In contrast, the interplay of the physics of these soft exchanges at large distances, with the physics of semihard rescattering at short distances, causes a significant additional suppression of ψ (2 S ) yields relative to that of the J /ψ . A good fit of all RHIC and LHC J /ψ and ψ (2 S ) data, for transverse momenta P⊥≤5 GeV in p+p and p+A collisions, is obtained for Λ ˜10 MeV.

The influence of visitor use levels on visitor spatial behavior in off-trail areas of dispersed recreation use.

PubMed

D'Antonio, Ashley; Monz, Christopher

2016-04-01

A variety of social and ecological factors influence the level and extent of ecological change that occurs in a park or protected area. Understanding these factors and how they are interrelated can help managers prevent undesirable ecological impacts, especially in areas without formal trails and visitor sites. This study examines the relationship between levels of visitor use and spatial patterns of visitor behavior at a variety of backcountry recreation destinations. Current assumptions in both the literature and simulation modeling efforts assume that visitor behavior either does not change with use level or that visitors are more likely to disperse at high levels of visitor use. Using visitor counts and GPS tracks of visitor behavior in locations where visitors could disperse off-trail, we found that visitors' spatial behavior does vary with visitor use level in some recreation settings, however the patterns of visitor behavior observed in this study are sometimes contrary to current generalizations. When visitor behavior does vary with use level, visitors are dispersing more at low levels of visitor use not when use level is high. Overall, these findings suggest that in certain situations the amount of visitor use at a recreation destination may be a less important driver of ecological change than visitor behavior. Copyright © 2016 Elsevier Ltd. All rights reserved.

Ground-state phases of the spin-1 J1-J2 Heisenberg antiferromagnet on the honeycomb lattice

NASA Astrophysics Data System (ADS)

Li, P. H. Y.; Bishop, R. F.

2016-06-01

We study the zero-temperature quantum phase diagram of a spin-1 Heisenberg antiferromagnet on the honeycomb lattice with both nearest-neighbor exchange coupling J1>0 and frustrating next-nearest-neighbor coupling J2≡κ J1>0 , using the coupled cluster method implemented to high orders of approximation, and based on model states with different forms of classical magnetic order. For each we calculate directly in the bulk thermodynamic limit both ground-state low-energy parameters (including the energy per spin, magnetic order parameter, spin stiffness coefficient, and zero-field uniform transverse magnetic susceptibility) and their generalized susceptibilities to various forms of valence-bond crystalline (VBC) order, as well as the energy gap to the lowest-lying spin-triplet excitation. In the range 0 <κ <1 we find evidence for four distinct phases. Two of these are quasiclassical phases with antiferromagnetic long-range order, one with two-sublattice Néel order for κ <κc1=0.250(5 ) , and another with four-sublattice Néel-II order for κ >κc 2=0.340 (5 ) . Two different paramagnetic phases are found to exist in the intermediate region. Over the range κc1<κ<κci=0.305 (5 ) we find a gapless phase with no discernible magnetic order, which is a strong candidate for being a quantum spin liquid, while over the range κci<κ <κc 2 we find a gapped phase, which is most likely a lattice nematic with staggered dimer VBC order that breaks the lattice rotational symmetry.

ψ ( 2 S ) versus J / ψ suppression in proton-nucleus collisions from factorization violating soft color exchanges

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ma, Yan -Qing; Venugopalan, Raju; Watanabe, Kazuhiro

Here, we argue that the large suppression of themore » $$\\psi(2S)$$ inclusive cross-section relative to the $$J/\\psi$$ inclusive cross-section in proton-nucleus (p+A) collisions can be attributed to factorization breaking effects in the formation of quarkonium. These factorization breaking effects arise from soft color exchanges between charm-anticharm pairs undergoing hadronization and comoving partons that are long-lived on time scales of quarkonium formation. We compute the short distance pair production of heavy quarks in the Color Glass Condensate (CGC) effective field theory and employ an improved Color Evaporation model (ICEM) to describe their hadronization into quarkonium at large distances. The combined CGC+ICEM model provides a quantitative description of $$J/\\psi$$ and $$\\psi(2S)$$ data in proton-proton (p+p) collisions from both RHIC and the LHC. Factorization breaking effects in hadronization, due to additional parton comovers in the nucleus, are introduced heuristically by imposing a cutoff $$\\Lambda$$, representing the momentum kick from soft color exchanges, in the ICEM model. Such soft exchanges have no perceptible effect on $$J/\\psi$$ suppression in p+A collisions. In contrast, the interplay of the physics of these soft exchanges at large distances, with the physics of semi-hard rescattering at short distances, causes a significant additional suppression of $$\\psi(2S)$$ yields relative to that of the $$J/\\psi$$. A good fit of all RHIC and LHC $$J/\\psi$$ and $$\\psi(2S)$$ data, for transverse momenta $$P_\\perp\\leq 5$$ GeV in p+p and p+A collisions, is obtained for $$\\Lambda\\sim 10$$ MeV.« less

ψ ( 2 S ) versus J / ψ suppression in proton-nucleus collisions from factorization violating soft color exchanges

DOE PAGES

Ma, Yan -Qing; Venugopalan, Raju; Watanabe, Kazuhiro; ...

2018-01-31

Here, we argue that the large suppression of themore » $$\\psi(2S)$$ inclusive cross-section relative to the $$J/\\psi$$ inclusive cross-section in proton-nucleus (p+A) collisions can be attributed to factorization breaking effects in the formation of quarkonium. These factorization breaking effects arise from soft color exchanges between charm-anticharm pairs undergoing hadronization and comoving partons that are long-lived on time scales of quarkonium formation. We compute the short distance pair production of heavy quarks in the Color Glass Condensate (CGC) effective field theory and employ an improved Color Evaporation model (ICEM) to describe their hadronization into quarkonium at large distances. The combined CGC+ICEM model provides a quantitative description of $$J/\\psi$$ and $$\\psi(2S)$$ data in proton-proton (p+p) collisions from both RHIC and the LHC. Factorization breaking effects in hadronization, due to additional parton comovers in the nucleus, are introduced heuristically by imposing a cutoff $$\\Lambda$$, representing the momentum kick from soft color exchanges, in the ICEM model. Such soft exchanges have no perceptible effect on $$J/\\psi$$ suppression in p+A collisions. In contrast, the interplay of the physics of these soft exchanges at large distances, with the physics of semi-hard rescattering at short distances, causes a significant additional suppression of $$\\psi(2S)$$ yields relative to that of the $$J/\\psi$$. A good fit of all RHIC and LHC $$J/\\psi$$ and $$\\psi(2S)$$ data, for transverse momenta $$P_\\perp\\leq 5$$ GeV in p+p and p+A collisions, is obtained for $$\\Lambda\\sim 10$$ MeV.« less

Records on floral biology and visitors of Jacquemontia montana (Moric.) Meisn. (Convolvulaceae) in Mucugê, Bahia.

PubMed

Silva, F O; Kevan, S D; Roque, N; Viana, B F; Kevan, P G

2010-08-01

We present the first records on pollination biology of Jacquemontia montana (Moric.) Meisn. (Convolvulaceae), a widespread climber in the Chapada Diamantina. Our objectives were to (1) characterise flower morphology and biology of J. montana; (2) sample flower visitors and (3) make inferences about potential pollinators, based on foraging behaviour. Observations and sampling were performed on two patches from 8:00 AM to 3:30 PM, May 15th to 16th, 2007. The corolla is bowl shaped, pentamerous, gamopetalous, actinomorphic, and yellow, with a mean diameter of 22.43 +/- 1.81 mm, the depth being variable during flower phases. Stigma receptivity lasted from 8:00 AM-3:30 PM and pollen viability from 9:00 AM-3:30 PM Pollen. showed great decline in number but not in viability during anthesis. Nectarivorous (Coleoptera, Diptera, Hymenoptera) and herbivorous (Orthoptera) insects were found on the flowers. Both male and female bees (Dialictus spp., Robertson 1902) were the most frequent flower visitor. The bees' behaviour, and time spent on flowers, varied according to the resource gathered (i.e., pollen or nectar). The Dialictus species are likely to be the main pollinator of J. montana, considering the frequency, contact with reproductive parts, and carrying only J. montana pollen spread over the ventral part of the thorax, abdomen and legs. Although not quantified, nectar may still be available in the afternoon, considering the behaviour of bees on flowers during this time. Pollen:ovule ration that was1.200:4, suggests facultative xenogamy.

Swine flu (H1N1 influenza): awareness profile of visitors of swine flu screening booths in Belgaum city, Karnataka.

PubMed

Viveki, R G; Halappanavar, A B; Patil, M S; Joshi, A V; Gunagi, Praveena; Halki, Sunanda B

2012-06-01

The 2009 flu pandemic was a global outbreak of a new strain of H1N1 influenza virus often referred colloquially as "swine flu". The objectives of the study were: (1) To know the sociodemographic and awareness profile of visitors attending swine flu screening booths. (2) To reveal sources of information. The present cross-sectional study was undertaken among the visitors (18 years and above) attending swine flu screening booths organised within the Belgaum city during Ganesh festival from 28-08-2009 to 03-09-2009 by interviewing them using predesigned, pretested structured questionnaire on swine flu. The data was collected and analysed using SPSS software programme for windows (version 16). Chi-square test was applied. Out of 206 visitors, 132 (64.1%) were males and 107 (51.9%) were in the age group of 30-49 years; 183 (88.8%) had heard about swine flu. More than a third of the visitors (38.3%) disclosed that there was a vaccine to prevent swine flu. Majority responded that it could be transmitted by being in close proximity to pigs (49.0%) and by eating pork (51.5%). Newspaper/magazine (64.6%), television (61.7%), and public posters/pamphlets (44.2%) were common sources of information. The present study revealed that doctors/public health workers have played little role in creating awareness in the community. The improved communication between doctors and the community would help to spread correct information about the disease and the role that the community can play in controlling the spread of the disease.

Quantum phase diagram of distorted J 1 - J 2 Heisenberg S  =  1/2 antiferromagnet in honeycomb lattice: a modified spin wave study

NASA Astrophysics Data System (ADS)

Ghorbani, Elaheh; Shahbazi, Farhad; Mosadeq, Hamid

2016-10-01

Using the modified spin wave method, we study the {{J}1}-{{J}2} Heisenberg model with first and second neighbor antiferromagnetic exchange interactions. For a symmetric S  =  1/2 model, with the same couplings for all the equivalent neighbors, we find three phases in terms of the frustration parameter \\barα={{J}2}/{{J}1} : (1) a commensurate collinear ordering with staggered magnetization (Néel.I state) for 0≤slant \\barα≲ 0.207 , (2) a magnetically gapped disordered state for 0.207≲ \\barα≲ 0.369 , preserving all the symmetries of the Hamiltonian and lattice, which by definition is a quantum spin liquid (QSL) state and (3) a commensurate collinear ordering in which two out of the three nearest neighbor magnetizations are antiparallel and the remaining pair are parallel (Néel.II state), for 0.396≲ \\barα≤slant 1 . We also explore the phase diagram of a distorted {{J}1}-{{J}2} model with S  =  1/2. Distortion is introduced as an inequality of one nearest neighbor coupling with the other two. This yields a richer phase diagram by the appearance of a new gapped QSL, a gapless QSL and also a valence bond crystal phase in addition to the previous three phases found for the undistorted model.

Hydrogen-oxygen driven Zero Emissions bus drives around KSC Visitor Complex

NASA Technical Reports Server (NTRS)

1999-01-01

The Zero Emissions (ZE) transit bus passes a mock-up orbiter named Explorer on a trek through the KSC Visitor Complex. Provided by dbb fuel cell engines inc. of Vancouver, Canada, the ZE bus was brought to KSC as part of the Center's Alternative Fuel Initiatives Program. The bus uses a Proton Exchange Membrane fuel cell in which hydrogen and oxygen, from atmospheric air, react to produce electricity that powers an electric motor drive system. The by-product 'exhaust' from the fuel cell is water vapor, thus zero harmful emissions. A typical diesel-powered bus emits more than a ton of harmful pollutants from its exhaust every year. The ZE bus is being used on tour routes at the KSC Visitor Complex for two days to introduce the public to the concept.

Visitors' conceptualizations of wilderness experiences

Treesearch

Erin Seekamp; Troy Hall; David Cole

2012-01-01

Despite 50 years of wilderness visitor experience research, it is not well understood how visitors conceptualize a wilderness experience. Diverging from etic approaches to wilderness visitor experience research, the research presented in this paper applied an emic approach to identify wilderness experience attributes. Specifically, qualitative data from 173 on-site...

Visas and Immigration | NREL

Science.gov Websites

U.S. techniques, methodologies, business practices, and expertise, which increase mutual understanding not support the pursuance of a waiver of the J-1 Exchange Visitor's Visa. NREL does not generally

22 CFR 41.31 - Temporary visitors for business or pleasure.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Temporary visitors for business or pleasure. 41.31 Section 41.31 Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Temporary Visitors § 41.31 Temporary visitors for...

22 CFR 41.31 - Temporary visitors for business or pleasure.

Code of Federal Regulations, 2012 CFR

2012-04-01

... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Temporary visitors for business or pleasure. 41.31 Section 41.31 Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Temporary Visitors § 41.31 Temporary visitors for...

22 CFR 41.31 - Temporary visitors for business or pleasure.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Temporary visitors for business or pleasure. 41.31 Section 41.31 Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Temporary Visitors § 41.31 Temporary visitors for...

22 CFR 41.31 - Temporary visitors for business or pleasure.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Temporary visitors for business or pleasure. 41.31 Section 41.31 Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Temporary Visitors § 41.31 Temporary visitors for...

22 CFR 41.31 - Temporary visitors for business or pleasure.

Code of Federal Regulations, 2014 CFR

2014-04-01

... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Temporary visitors for business or pleasure. 41.31 Section 41.31 Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Temporary Visitors § 41.31 Temporary visitors for...

EFT-1 Crew Module on Display at KSC Visitor Complex

NASA Image and Video Library

2017-04-12

The Orion crew module from Exploration Flight Test 1 (EFT-1) is on display at nearby NASA Kennedy Space Center Visitor Complex in Florida. The crew module is part of the NASA Now exhibit in the IMAX Theater. Also in view is a scale model of NASA's Space Launch System rocket and Orion spacecraft on the mobile launcher. The Orion EFT-1 spacecraft launched atop a United Launch Alliance Delta IV rocket Dec. 5, 2014, from Space Launch Complex 37 at Cape Canaveral Air Force Station. The spacecraft built for humans traveled 3,604 miles above Earth and splashed down about 4.5 hours later in the Pacific Ocean.

The Public Nights Program at Appalachian State University's Dark Sky Observatory Cline Visitor Center: Our First Year’s Results

NASA Astrophysics Data System (ADS)

Caton, Daniel B.; Smith, A. B.; Hawkins, R. L.

2013-01-01

We have completed our first year of public nights at our Dark Sky Observatory’s 32-inch telescope and the adjacent Cline Visitor Center. Our monthly public nights are composed of two groups of 60 visitors each that arrive for 1.5-hour sessions. Shorter summer nights limit us to one session. We use two large (70-inch) flat panel displays in the Center for a brief pre-observing discussion and to entertain visitors while they await their turn at the telescope’s eyepiece. One of them runs a Beta version of Microsoft’s Worldwide Telescope for Kinect. While the facility is fully ADA compliant, with eyepiece access via a DFM Engineering Articulated Relay Eyepiece, and a wheelchair lift if needed, we have only had one occasion to use this capability. We present some of our experiences in this poster and encourage readers to offer suggestions. The Visitor Center was established with the support of Mr. J. Donald Cline, for which we are very grateful. The Kinect system was donated by Marley Gray, at Microsoft/Charlotte. The telescope was partially funded by the National Science Foundation.

Hospital admissions for traumatic brain injury of Austrian residents vs. of visitors to Austria.

PubMed

Mauritz, Walter; Brazinova, Alexandra; Majdan, Marek; Leitgeb, Johannes

2014-01-01

The goal was to compare epidemiology of hospital admissions for traumatic brain injury (TBI) in Austrian residents vs. visitors to Austria. Data on all hospital admissions due to TBI (ICD-10 codes S06.0-S06.9; years 2009-2011) was provided by the Austrian Statistical Office. Data on Austrian population and on tourism (visitor numbers, nights spent) was retrieved from www.statistik.at . Age, sex, mechanism of injury, season and mortality was analysed for Austrian residents vs. visitors. Visitors contributed 3.9% to the total population and 9.2% of all TBI cases. Incidence of hospital admissions was 292/100,000/year in Austrian residents and was 727/100,000/year in visitors. Male:female ratio was 1.39:1 in Austrian residents and 1.55:1 in visitors. Austrian cases were older than visitors' cases (mean age 41 vs. 28 years). Austrian cases were distributed evenly over the seasons, while 75% of the visitors' cases happened during winter and spring. The most frequently observed causes of TBI in Austrian residents were private accidents, while sports caused almost half of the visitors' cases. Hospital mortality was lower in visitors than in Austrian residents (0.8 vs. 2.1%). Sports-related TBI of visitors causes a significant workload for Austrian hospitals. Better prevention is warranted.

Uncovering Visitor Identity: A Citywide Utilization of the Falk Visitor-Identity Model

ERIC Educational Resources Information Center

Trainer, Laureen; Steele-Inama, Marley; Christopher, Amber

2012-01-01

In his book, "Identity and the Museum Visitor Experience," John Falk makes the case that by understanding the underlying motivations that drive a visitor, a museum can create an experience that reflects a person's identity and therefore satisfy their motivation for visiting. According to Falk, this level of personal connection increases…

J-PAKE: Authenticated Key Exchange without PKI

NASA Astrophysics Data System (ADS)

Hao, Feng; Ryan, Peter

Password Authenticated Key Exchange (PAKE) is one of the important topics in cryptography. It aims to address a practical security problem: how to establish secure communication between two parties solely based on a shared password without requiring a Public Key Infrastructure (PKI). After more than a decade of extensive research in this field, there have been several PAKE protocols available. The EKE and SPEKE schemes are perhaps the two most notable examples. Both techniques are however patented. In this paper, we review these techniques in detail and summarize various theoretical and practical weaknesses. In addition, we present a new PAKE solution called J-PAKE. Our strategy is to depend on well-established primitives such as the Zero-Knowledge Proof (ZKP). So far, almost all of the past solutions have avoided using ZKP for the concern on efficiency. We demonstrate how to effectively integrate the ZKP into the protocol design and meanwhile achieve good efficiency. Our protocol has comparable computational efficiency to the EKE and SPEKE schemes with clear advantages on security.

75 FR 65006 - Board of Visitors, United States Military Academy (USMA)

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-21

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy... committee meeting for the United States Military Academy Board of Visitors. This is the 2010 Annual Meeting... place: 1. Name of Committee: United States Military Academy Board of Visitors. 2. Date: Friday, November...

Visitors or visits? An examination of zoo visitor numbers using the case study of Australia.

PubMed

Smith, Liam

2013-01-01

Usually cited in reference to the potential reach of zoo education, one of the popular figures for global zoo visitation is that 600 million people visit zoos annually. However, this number needs clarification on two fronts. First, there are many zoo visitors who are not included in the calculation because they visited a zoo that was not included in the count. Second, it does not take into consideration the people visit either the same or different zoos more than once annually. Using data collected from several sources, including zoo visitors themselves, this article focuses on one country--Australia--that contributes 15.6 million to the visitation total, and contends that the correct number of unique annual zoo visitors to Australian zoos is likely to be between 8 and 10 million. However, rather than suggesting an overemphasis on the potential of zoos for educating visitors, having regular repeat visitors represents a distinct advantage for zoos, allowing for progressive education opportunities. © 2012 Wiley Periodicals, Inc.

Avian leukosis virus subgroup J induces its receptor--chNHE1 up-regulation.

PubMed

Feng, Weiguo; Meng, Wei; Cai, Liming; Cui, Xiyao; Pan, Zhifang; Wang, Guihua; Cheng, Ziqiang

2016-04-02

Avian leukosis virus subgroup J (ALV-J) is an oncogenic retrovirus which causes immunosuppression and neoplasia in meat-type and egg-type chickens. ALV-J infects host cells via specific interaction between the viral Env and the cell surface receptor -chicken sodium hydrogen exchanger type 1 (chNHE1). NHE1 involved in altering the cellular pH and playing a critical role in tumorigenesis. However, little is known about the other relationship between ALV-J and chNHE1. In ALV-J infected DF-1 cells, the mRNA level of chNHE1 was up-regulated with time-dependent manner tested by real time PCR, and accordingly, intracellular pH was increased tested by spectrofluorometer. In vivo, the mRNA level of chNHE1 was determined by real time PCR in ALV-J infected experimental chickens and field cases. The result showed that the mRNA level of chNHE1 was up-regulated after virus shedding, especially in continuous viremic shedders (CS group). However, no significant difference was found between non-shedding group (NS group) and control group. In field cases, mRNA level of chNHE1 was positively correlated with increasing ALV-J load in tumor bearing and immune tolerance chickens. Furthermore, immunohistochemistry results showed that the protein expression of chNHE1 was up-regulated in different organs of both experimental chickens and tumor bearing chickens compared with the control. Taken together, we conclude that ALV-J induces chNHE1 up-regulation in viremia and neoplasia chickens.

Visitor diversity on national forests-how should managers respond?

Treesearch

Cassandra Johnson; D.B.K English

2007-01-01

Historically, Anglo Americans have been the primary clientèle at nature-based outdoor recreation areas in the United States (Chavez 2001, Dunn et al. 2002). Goldsmith (1 994) highlighted the lack of racial and ethnic diversity among National Park visitors. Citing a Texas A&M study, Goldsmith (1994) reported that less than 1 % of car visitors to Yosemite National...

J1-J2 square lattice antiferromagnetism in the orbitally quenched insulator MoOPO4

NASA Astrophysics Data System (ADS)

Yang, L.; Jeong, M.; Babkevich, P.; Katukuri, V. M.; Náfrádi, B.; Shaik, N. E.; Magrez, A.; Berger, H.; Schefer, J.; Ressouche, E.; Kriener, M.; Živković, I.; Yazyev, O. V.; Forró, L.; Rønnow, H. M.

2017-07-01

We report magnetic and thermodynamic properties of a 4 d1 (Mo5 +) magnetic insulator MoOPO4 single crystal, which realizes a J1-J2 Heisenberg spin-1 /2 model on a stacked square lattice. The specific-heat measurements show a magnetic transition at 16 K which is also confirmed by magnetic susceptibility, ESR, and neutron diffraction measurements. Magnetic entropy deduced from the specific heat corresponds to a two-level degree of freedom per Mo5 + ion, and the effective moment from the susceptibility corresponds to the spin-only value. Using ab initio quantum chemistry calculations, we demonstrate that the Mo5 + ion hosts a purely spin-1 /2 magnetic moment, indicating negligible effects of spin-orbit interaction. The quenched orbital moments originate from the large displacement of Mo ions inside the MoO6 octahedra along the apical direction. The ground state is shown by neutron diffraction to support a collinear Néel-type magnetic order, and a spin-flop transition is observed around an applied magnetic field of 3.5 T. The magnetic phase diagram is reproduced by a mean-field calculation assuming a small easy-axis anisotropy in the exchange interactions. Our results suggest 4 d molybdates as an alternative playground to search for model quantum magnets.

Wilderness science in a time of change conference-Volume 4: Wilderness visitors, experiences, and visitor management; 1999 May 23-27; Missoula, MT

Treesearch

David N. Cole; Stephen F. McCool; William T. Borrie; Jennifer O' Loughlin

2000-01-01

Thirty-seven papers are presented on wilderness visitors, experiences, and visitor management. Three overview papers synthesize knowledge and research about wilderness visitors, management of visitor experiences, and wilderness recreation planning. Other papers contain the results of specific research projects on wilderness visitors, information and education, and...

Hydrogen-oxygen driven Zero Emissions bus drives around KSC Visitor Complex

NASA Technical Reports Server (NTRS)

1999-01-01

The Zero Emissions (ZE) transit bus tours the KSC Visitor Complex for a test ride. In the background are a mock-up orbiter named Explorer (left) and a stack of solid rocket boosters and external tank (right), typically used on Shuttle launches. Provided by dbb fuel cell engines inc. of Vancouver, Canada, the ZE bus was brought to KSC as part of the Center's Alternative Fuel Initiatives Program. The bus uses a Proton Exchange Membrane fuel cell in which hydrogen and oxygen, from atmospheric air, react to produce electricity that powers an electric motor drive system. The by-product 'exhaust' from the fuel cell is water vapor, thus zero harmful emissions. A typical diesel-powered bus emits more than a ton of harmful pollutants from its exhaust every year. The ZE bus is being used on tour routes at the KSC Visitor Complex for two days to introduce the public to the concept.

Energetics of sodium-calcium exchanged zeolite A.

PubMed

Sun, H; Wu, D; Guo, X; Shen, B; Navrotsky, A

2015-05-07

A series of calcium-exchanged zeolite A samples with different degrees of exchange were prepared. They were characterized by powder X-ray diffraction (XRD) and differential scanning calorimetry (DSC). High temperature oxide melt drop solution calorimetry measured the formation enthalpies of hydrated zeolites CaNa-A from constituent oxides. The water content is a linear function of the degree of exchange, ranging from 20.54% for Na-A to 23.77% for 97.9% CaNa-A. The enthalpies of formation (from oxides) at 25 °C are -74.50 ± 1.21 kJ mol(-1) TO2 for hydrated zeolite Na-A and -30.79 ± 1.64 kJ mol(-1) TO2 for hydrated zeolite 97.9% CaNa-A. Dehydration enthalpies obtained from differential scanning calorimetry are 32.0 kJ mol(-1) H2O for hydrated zeolite Na-A and 20.5 kJ mol(-1) H2O for hydrated zeolite 97.9% CaNa-A. Enthalpies of formation of Ca-exchanged zeolites A are less exothermic than for zeolite Na-A. A linear relationship between the formation enthalpy and the extent of calcium substitution was observed. The energetic effect of Ca-exchange on zeolite A is discussed with an emphasis on the complex interactions between the zeolite framework, cations, and water.

National wildlife refuge visitor survey results: 2010/2011

USGS Publications Warehouse

Sexton, Natalie R.; Dietsch, Alia M.; Don Carolos, Andrew W.; Miller, Holly M.; Koontz, Lynne M.; Solomon, Adam N.

2012-01-01

The U.S. Fish and Wildlife Service (Service) collaborated with the U.S. Geological Survey to conduct a national survey of visitors regarding their experiences on national wildlife refuges. The survey was conducted to better understand visitor needs and experiences and to design programs and facilities that respond to those needs. The survey results will inform Service performance planning, budget, and communications goals. Results will also inform Comprehensive Conservation Plan (CCPs), Visitor Services, and Transportation Planning processes. The survey was conducted on 53 refuges across the National Wildlife Refuge System (Refuge System) to better understand visitor needs and experiences and to design programs and facilities that respond to those needs. A total of 14,832 visitors agreed to participate in the survey between July 2010 and November 2011. In all, 10,233 visitors completed the survey for a 71% response rate. This report provides a summary of visitor and trip characteristics; visitor opinions about refuges and their offerings; and visitor opinions about alternative transportation and climate change, two Refuge System topics of interest. The Refuge System, established in 1903 and managed by the Service, is the leading network of protected lands and waters in the world dedicated to the conservation of fish, wildlife and their habitats. There are 556 National Wildlife Refuges and 38 wetland management districts nationwide, encompassing more than 150 million acres. The Refuge System attracts more than 45 million visitors annually, including 25 million people per year to observe and photograph wildlife, over 9 million to hunt and fish, and more than 10 million to participate in educational and interpretation programs. Understanding visitors and characterizing their experiences on national wildlife refuges are critical elements of managing these lands and meeting the goals of the Refuge System. These combined results are based on surveying at 53 participating

78 FR 17183 - Information Collection: Grey Towers Visitor Comment Card

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-20

... DEPARTMENT OF AGRICULTURE Forest Service Information Collection: Grey Towers Visitor Comment Card... request: (1) An extension from the Office of Management and Budget; and (2) to merge the currently approved information collection 0596- 0222, ``Grey Towers Visitor Comment Card'' with 0596-0226, ``Forest...

The influence of wilderness restoration programs on visitor experience and visitor opinions of managers

Treesearch

Joseph P. Flood; Leo H. McAvoy

2000-01-01

Wilderness campsites heavily damaged by recreational use pose a significant management challenge that threatens the integrity of the wilderness resource and the quality of the visitors’ experience. This study, conducted in the Mission Mountains Wilderness of northwestern Montana, surveyed 293 visitors to determine what influence heavily damaged campsites and site...

76 FR 59182 - Bureau of Educational and Cultural Affairs; Exchange Visitor Program; Summer Work Travel Program...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-23

... Visitor Program; Summer Work Travel Program Sponsor On-Site Reviews ACTION: Notice. SUMMARY: Pursuant to..., the Department announces its intent to conduct on- site reviews of sponsors in the Summer Work Travel... Work Travel Program provides foreign college and university students the opportunity to work and travel...

26 CFR 1.415(j)-1 - Limitation year.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 26 Internal Revenue 5 2010-04-01 2010-04-01 false Limitation year. 1.415(j)-1 Section 1.415(j)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES Pension, Profit-Sharing, Stock Bonus Plans, Etc. § 1.415(j)-1 Limitation year. (a) In...

Wildland fire and the wilderness visitor experience

Treesearch

Sierra L. Schroeder; Ingrid E. Schneider

2010-01-01

The purpose of this study was to understand wilderness visitors' perceptions of wildland fire and describe visitors' wilderness recreational experience following wildland fire in the Boundary Waters Canoe Area Wilderness (BWCAW). Qualitative interviews revealed visitors' perceptions of burned areas as well as if and how activities and behaviors were...

Functional homogenization of flower visitor communities with urbanization.

PubMed

Deguines, Nicolas; Julliard, Romain; de Flores, Mathieu; Fontaine, Colin

2016-04-01

Land-use intensification and resulting habitat loss are put forward as the main causes of flower visitor decline. However, the impact of urbanization, the prime driver of land-use intensification in Europe, is poorly studied. In particular, our understanding of whether and how it affects the composition and functioning of flower visitor assemblages is scant, yet required to cope with increasing urbanization worldwide. Here, we use a nation-wide dataset of plant-flower visitor (Coleoptera, Diptera, Hymenoptera, Lepidoptera) interactions sampled by citizen scientists following a standardized protocol to assess macroecological changes in richness and composition of flower visitor communities with urbanization. We measured the community composition by quantifying the relative occurrence of generalist and specialist flower visitors based on their specialisation on flowering plant families. We show that urbanization is associated with reduced flower visitor richness and a shift in community composition toward generalist insects, indicating a modification of the functional composition of communities. These results suggest that urbanization affects not only the richness of flower visitor assemblages but may also cause their large-scale functional homogenization. Future research should focus on designing measures to reconcile urban development with flower visitor conservation.

[Frequent visitors to psychiatric emergency service: Demographical and clinical analysis].

PubMed

Schmoll, S; Boyer, L; Henry, J-M; Belzeaux, R

2015-04-01

Frequent visitors of psychiatric emergency wards are an important health care problem. Previous studies underlined that 2 % to 9 % of patients induce 15 % to 33 % of total clinical activity. Those patients have chronic and severe mental illness such as schizophrenia, associated with social and financial difficulties. The aim of this study was to describe demographic and clinical characteristics of frequent visitors to a psychiatric emergency ward in a French Academic hospital over 6years in comparison to non-frequent visitors. The study is based on a retrospective review of the psychiatric emergency wards' administrative and medical computer databases; data that included demographic, financial, clinical, and management information. During this 6-year study, the psychiatric ward recorded 16,754 care episodes for 8800 different patients. We compared frequent visitors with other visitors using univariate and multivariate analyses. Frequent visitors were defined by a number of visits greater than 2 of the mean standard deviation. Two percent of patients (n=192) had nine or more visits during the period. These patients caused 21 % of the total number of the visits. In the univariate analysis, the most significant reasons for referral in frequent visitors versus others (P<0.001) were: more frequent anxiety (37.6 % vs. 32.1 %), less frequent disruptive behavior (8.4 % vs. 12.9 %), depression (7.8 % vs. 17.2 %) and suicide attempt (4.5 % vs. 11.1 %). Factors associated with frequent visitors (P<0.001), after including all significant or confounding variables (multivariate analysis), were: schizophrenia and schizophrenia spectrum disorders (OR=29.5, IC: 11.4-76), DSM-IV cluster B personality disorders (OR=5.5, IC: 3.6-8.4), mental and behavioral disorders due to psychoactive substance use (OR=4.6, IC: 3.1-7), financial assistance through social government programs (OR range: 9.1-2.4, all significant) and being homeless (OR=2.7, IC: 1.8-4). Factors associated with non

78 FR 6805 - Information Collection: Arctic National Wildlife Refuge Recreation Visitor Study-2013

Federal Register 2010, 2011, 2012, 2013, 2014

2013-01-31

... Recreation Visitor Study--2013 AGENCY: Forest Service, USDA. ACTION: Notice; request for comment. SUMMARY: In... Recreation Visitor Study--2013. DATES: Comments must be received in writing on or before April 1, 2013 to be... Recreation Visitor Study-- 2013. OMB Number: 0596-NEW. Expiration Date of Approval: Not applicable. Type of...

Developing health visitor prescribing.

PubMed

Brooks, Christina

2013-04-01

Prescribing is an essential element of the health visitor's role. However, in one inner-city locality prescribing in practice was evaluated to be at a low level. A number of barriers to prescribing were identified through a focus group. A project to support health visitors was planned and delivered. The project involved clinical updates and improvement to the registration process, thereby reducing delays for practitioners in getting prescribing pads. The result was that prescribing confidence improved and prescribing activity increased.

U (1 ) -symmetric infinite projected entangled-pair states study of the spin-1/2 square J1-J2 Heisenberg model

NASA Astrophysics Data System (ADS)

Haghshenas, R.; Sheng, D. N.

2018-05-01

We develop an improved variant of U (1 ) -symmetric infinite projected entangled-pair states (iPEPS) ansatz to investigate the ground-state phase diagram of the spin-1 /2 square J1-J2 Heisenberg model. In order to improve the accuracy of the ansatz, we discuss a simple strategy to select automatically relevant symmetric sectors and also introduce an optimization method to treat second-neighbor interactions more efficiently. We show that variational ground-state energies of the model obtained by the U (1 ) -symmetric iPEPS ansatz (for a fixed bond dimension D ) set a better upper bound, improving previous tensor-network-based results. By studying the finite-D scaling of the magnetically order parameter, we find a Néel phase for J2/J1<0.53 . For 0.53 <J2/J1<0.61 , a nonmagnetic columnar valence bond solid (VBS) state is established as observed by the pattern of local bond energy. The divergent behavior of correlation length ξ ˜D1.2 and vanishing order parameters are consistent with a deconfined Néel-to-VBS transition at J2c1/J1=0.530 (5 ) , where estimated critical anomalous exponents are ηs˜0.6 and ηd˜1.9 for spin and dimer correlations, respectively. We show that the associated VBS order parameter monotonically increases with J2/J1 and finally a first-order quantum phase transition takes place at J2c2/J1=0.610 (2 ) to the conventional Stripe phase. We compare our results with earlier DMRG and PEPS studies and suggest future directions for resolving remaining issues.

78 FR 15800 - 30-Day Notice of Proposed Information Collection: Exchange Student Survey

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-12

... Collection. Originating Office: Educational and Cultural Affairs (ECA/ PE/C/PY). Form Number: SV2012-0007... automated collection techniques or other forms of information technology. Please note that comments... provisions of the Mutual Educational and Cultural Exchange Act, as amended, and the Exchange Visitor Program...

'Think Baby': online learning for student health visitors.

PubMed

Appleton, Jane V; Harris, Margaret; Kelly, Cat; Huppe, Irmgard

2014-06-01

'Think Baby' is an innovative online learning resource which has been developed to help student health visitors (and other specialist community public health nurses) build their skills in observing and assessing mother-infant interactions. The project's development and pilot work was funded by a small grant from the Higher Education Academy. It builds on the findings of the team's previous research, which found health visitors' initial training had left them ill-prepared to assess the intricacies of mother-infant relationships. The 'Think Baby' project sought to develop online training resources for student health visitors using video footage of mothers and babies to illustrate different types of interactions. A small group of student health visitors were engaged in reviewing and evaluating the materials and considering their acceptability. Once developed, the materials were piloted with student health visitors from three universities, community practice teachers and a health visitor academic, and they were then adapted for wider roll out. 'Think Baby' enables student health visitors to develop their core skills in assessment, which is really important in identifying when early help and support are needed for mothers and infants.

28 CFR 540.45 - Qualification as special visitor.

Code of Federal Regulations, 2011 CFR

2011-07-01

... visitors. Visits by special visitors ordinarily are for a specific purpose and ordinarily are not of a... the community. Pretrial inmates may be allowed special visitors for the purpose of protecting the... permit a special business visit in such cases. The Warden may waive the requirement for the existence of...

26 CFR 1.1002-1 - Sales or exchanges.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 26 Internal Revenue 11 2010-04-01 2010-04-01 true Sales or exchanges. 1.1002-1 Section 1.1002-1...) INCOME TAXES Determination of Amount of and Recognition of Gain Or Loss § 1.1002-1 Sales or exchanges. (a) General rule. The general rule with respect to gain or loss realized upon the sale or exchange of property...

Living Liquid: Design and Evaluation of an Exploratory Visualization Tool for Museum Visitors.

PubMed

Ma, J; Liao, I; Ma, Kwan-Liu; Frazier, J

2012-12-01

Interactive visualizations can allow science museum visitors to explore new worlds by seeing and interacting with scientific data. However, designing interactive visualizations for informal learning environments, such as museums, presents several challenges. First, visualizations must engage visitors on a personal level. Second, visitors often lack the background to interpret visualizations of scientific data. Third, visitors have very limited time at individual exhibits in museums. This paper examines these design considerations through the iterative development and evaluation of an interactive exhibit as a visualization tool that gives museumgoers access to scientific data generated and used by researchers. The exhibit prototype, Living Liquid, encourages visitors to ask and answer their own questions while exploring the time-varying global distribution of simulated marine microbes using a touchscreen interface. Iterative development proceeded through three rounds of formative evaluations using think-aloud protocols and interviews, each round informing a key visualization design decision: (1) what to visualize to initiate inquiry, (2) how to link data at the microscopic scale to global patterns, and (3) how to include additional data that allows visitors to pursue their own questions. Data from visitor evaluations suggests that, when designing visualizations for public audiences, one should (1) avoid distracting visitors from data that they should explore, (2) incorporate background information into the visualization, (3) favor understandability over scientific accuracy, and (4) layer data accessibility to structure inquiry. Lessons learned from this case study add to our growing understanding of how to use visualizations to actively engage learners with scientific data.

How to Handle Drop-in Visitors.

ERIC Educational Resources Information Center

Partin, Ronald L.

1988-01-01

Although interruptions are an unavoidable part of the principal's job, a completely open-door policy for drop-in visitors could divert attention from planning and other priorities. This article suggests ways for principals to minimize the number of visitors and the length of visits, including keeping people standing, providing uncomfortable…

Estimation of performance of a J-T refrigerators operating with nitrogen-hydrocarbon mixtures and a coiled tubes-in-tube heat exchanger

NASA Astrophysics Data System (ADS)

Satya Meher, R.; Venkatarathnam, G.

2018-06-01

The exergy efficiency of Joule-Thomson (J-T) refrigerators operating with mixtures (MRC systems) strongly depends on the choice of refrigerant mixture and the performance of the heat exchanger used. Helically coiled, multiple tubes-in-tube heat exchangers with an effectiveness of over 96% are widely used in these types of systems. All the current studies focus only on the different heat transfer correlations and the uncertainty in predicting performance of the heat exchanger alone. The main focus of this work is to estimate the uncertainty in cooling capacity when the homogenous model is used by comparing the theoretical and experimental studies. The comparisons have been extended to some two-phase models present in the literature as well. Experiments have been carried out on a J-T refrigerator at a fixed heat load of 10 W with different nitrogen-hydrocarbon mixtures in the evaporator temperature range of 100-120 K. Different heat transfer models have been used to predict the temperature profiles as well as the cooling capacity of the refrigerator. The results show that the homogenous two-phase flow model is probably the most suitable model for rating the cooling capacity of a J-T refrigerator operating with nitrogen-hydrocarbon mixtures.

Numerical investigation of transient behaviour of the recuperative heat exchanger in a MR J-T cryocooler using different heat transfer correlations

NASA Astrophysics Data System (ADS)

Damle, R. M.; Ardhapurkar, P. M.; Atrey, M. D.

2016-12-01

In J-T cryocoolers operating with mixed refrigerants (nitrogen-hydrocarbons), the recuperative heat exchange takes place under two-phase conditions. Simultaneous boiling of the low pressure stream and condensation of the high pressure stream results in higher heat transfer coefficients. The mixture composition, operating conditions and the heat exchanger design are crucial for obtaining the required cryogenic temperature. In this work, a one-dimensional transient algorithm is developed for the simulation of the two-phase heat transfer in the recuperative heat exchanger of a mixed refrigerant J-T cryocooler. Modified correlation is used for flow boiling of the high pressure fluid while different condensation correlations are employed with and without the correction for the low pressure fluid. Simulations are carried out for different mixture compositions and numerical predictions are compared with the experimental data. The overall heat transfer is predicted reasonably well and the qualitative trends of the temperature profiles are also captured by the developed numerical model.

78 FR 32241 - Board of Visitors, United States Military Academy (USMA); Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-29

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy... take place: 1. Name of Committee: United States Military Academy Board of Visitors. 2. Date: Wednesday... 2017, Military Program (Summer Training), Summer Term Academic Program (STAP) and Academic Individual...

Visitor circulation and nonhuman animal welfare: an overlooked variable?

PubMed

Davey, Gareth; Henzi, Peter

2004-01-01

This article investigates visitor circulation and behaviors within a gallery of primate exhibits in relation to their possible implications for nonhuman animal welfare. When entering a primate house, the majority of visitors (84%) turned right, a pattern upheld throughout all times of the day. These findings demonstrate the existence of the "right-turn" principle, a concept previously identified and investigated in the museum setting. The existence of this circulation pattern in zoos has important implications for the practical management of animal welfare issues because unbalanced or large numbers of visitors at specific enclosures could present a stressful influence. The "direction bias" could not be attributed to demographic or behavioral traits, therefore suggesting that the principle, like similar findings from museum research, generalizes across visitor populations and, therefore, zoos. A visitor sample at another exhibit (located outside the exhibit gallery) did not display a direction bias, suggesting that the marked circulation pattern may be specific to exhibit galleries. The article discusses the significance and consequences of visitor circulation with respect to visitor management and animal welfare.

NREL Visitors Center Closing Temporarily for Remodeling

Science.gov Websites

Visitors Center Closing Temporarily for Remodeling Media may contact: George Douglas, 303-275-4096 email: George Douglas Golden, Colo., Sept. 6, 2000 - The Visitors Center at the U.S. Department of

22 CFR 41.57 - International cultural exchange visitors and visitors under the Irish Peace Process Cultural and...

Code of Federal Regulations, 2011 CFR

2011-04-01

... Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Business and Media Visas § 41.57 International cultural exchange... a petition does not establish that the alien is eligible to receive a nonimmigrant visa. (3...

22 CFR 41.57 - International cultural exchange visitors and visitors under the Irish Peace Process Cultural and...

Code of Federal Regulations, 2010 CFR

2010-04-01

... Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Business and Media Visas § 41.57 International cultural exchange... a petition does not establish that the alien is eligible to receive a nonimmigrant visa. (3...

22 CFR 41.57 - International cultural exchange visitors and visitors under the Irish Peace Process Cultural and...

Code of Federal Regulations, 2014 CFR

2014-04-01

... Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Business and Media Visas § 41.57 International cultural exchange... a petition does not establish that the alien is eligible to receive a nonimmigrant visa. (3...

22 CFR 41.57 - International cultural exchange visitors and visitors under the Irish Peace Process Cultural and...

Code of Federal Regulations, 2013 CFR

2013-04-01

... Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Business and Media Visas § 41.57 International cultural exchange... a petition does not establish that the alien is eligible to receive a nonimmigrant visa. (3...

22 CFR 41.57 - International cultural exchange visitors and visitors under the Irish Peace Process Cultural and...

Code of Federal Regulations, 2012 CFR

2012-04-01

... Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Business and Media Visas § 41.57 International cultural exchange... a petition does not establish that the alien is eligible to receive a nonimmigrant visa. (3...

VISITOR - PRES. NIXON - PROTOCOL - JSC

NASA Image and Video Library

1974-03-20

Five (5) views of President Richard M. Nixon during his visit to the JSC. These views show the President as he addresses a crowd of employees and visitors outside of Building 1 Auditorium. Dr. Christopher C. Kraft, Fletcher, and Astronaut Gerald Carr, with Pete Clements, George Abbey, and Jack Waite in the background is also seen with the President. 1. Pres. Richard M. Nixon 2. Dr. Christopher C. Kraft JSC, HOUSTON, TX

Visitor meanings of place: using computer content analysis to examine visitor meanings at three national capitol sites

Treesearch

Wei-Li Jasmine Chen; Chad L. Pierskalla; Theresa L. Goldman; David L. Larsen

2002-01-01

A mix method study designed to explore the meanings, interest, and connections visitors ascribe to three National Park Service sites: National Capital Parks Central, Rock Creek Park, and George Washington Memorial Parkway's Great Falls Park. The researchers employed the focus group interview technique and asked visitors prior to and then after an interpretive...

Monitoring the visitor experience at Buck Island Reef National Monument

Treesearch

Alan R. Graefe; Roger L. Moore

1992-01-01

This paper examines relationships between visitor density levels and perceptions of crowding at a Caribbean coral reef. Reef visitors were more likely to report that the quality of their experience was enhanced, rather than reduced, by their encounters with other visitors. Perceived crowding was related to visitors' previous experience and the location of...

Selective adsorption of Pt ions from chloride solutions obtained by leaching chlorinated spent automotive catalysts on ion exchange resin Diaion WA21J.

PubMed

Shen, Shaobo; Guishen, Liang; Pan, Tonglin; He, JunZhang; Guo, Zhanchen

2011-12-15

Thermodynamic and kinetics studies for adsorption of Pt ions complexes from the chloride solutions obtained by leaching chlorinated spent automotive catalysts on anionic exchange resin Diaion WA21J were carried out. It was found that only Si, Pt, Rh and Pd from the solution were selectively adsorbed on the resin Diaion WA21J more strongly. The adsorption equilibrium time for Pt ions was about 20 h. The isothermal adsorption of Pt ions was found to fit Langmuir, Freundlich and DKR models. The maximum monolayer adsorption capacities Q(max) and X(m) of Pt ions on the resin based on Langmuir and DKR model were 4.85, 5.36 and 5.69 mg/g as well as 5.01, 5.63 and 5.98 mg/g for temperatures 18°C, 28°C and 40°C, respectively. The apparent adsorption energy E(ad) based on DKR model were -11.79, -11.04 and -11.04 kJ/mol for the temperatures 18°C, 28°C and 40°C, respectively. Ion exchange was the mechanism involved in the adsorption process. The adsorption of Pt ions on the resin underwent pseudo-first-order kinetic process, and the apparent adsorption activation energy E(a,1) was 12.6 kJ/mol. The intraparticle diffusion of Pt ions was a main rate-controlling step in most of time of adsorption process. Copyright © 2011 Elsevier Inc. All rights reserved.

Mecca Hills: Visitor research case study

Treesearch

Deborah Chavez; John Baas; Patricia Winter

1993-01-01

This "Case Study" represents the first in a series of reports which provide insight into specific management environments and the factors significant to an understanding of the expectations and demands of public land visitors in the West. The study describes the methods and results of a two year inventory of visitors in a wildland area in the desert...

Nurse-patient/visitor communication in the emergency department.

PubMed

Pytel, Constance; Fielden, Nina M; Meyer, Kate H; Albert, Nancy

2009-09-01

Patients and visitors need to be encouraged to express their needs and be provided with enough relevant information so that treatment and recovery from illness are optimized. In the emergency department, it is important for nurses to create an environment of trust, respect, and acceptance. Using a survey design, a convenience sample of nurses and patients/visitors described patient/visitor communication needs and determined if needs were met during the ED encounter. Data were analyzed using descriptive statistics. Mantel Haenszel chi(2) tests were used to determine associations between patient-rated importance of nurse communication needs and nursing communication performance. Sixty-four nurses and 123 patients/visitors completed a communication needs survey. More than 80% of patients answered "excellent" or "very good" to 6 of the top 10 important communication needs. Patient and nurse importance differed significantly on only 2 communication needs: calm voice and social status (nurses rated these needs of higher importance than patients; P = .01, P = .006). Patient-ranked importance was positively associated with patient opinion of how well needs were met in 6 of 19 patient/visitor communication needs; that is, not making assumptions about social status (P = .0006), offering reassurance to calm fears (P = .004), and teaching about primary medical concerns/conditions (P = .01). Nurse and patient/visitor perceptions of important communication are similar. Educating nurses about patient/visitor communication needs is the first step in enhancing how well nurses meet those needs.

78 FR 25289 - Board of Visitors for the National Fire Academy Teleconference

Federal Register 2010, 2011, 2012, 2013, 2014

2013-04-30

...] Board of Visitors for the National Fire Academy Teleconference AGENCY: Federal Emergency Management.... SUMMARY: The Board of Visitors for the National Fire Academy (Board) will meet via teleconference on... National Fire Academy will meet on Wednesday, May 15, 2013, from 1:30 to 4:00 p.m. Eastern Daylight Time...

Evaluating Cross-Cultural Acculturation Experiences Influencing International Black African Students' Academic Success in a United States University

ERIC Educational Resources Information Center

Macharia-Lowe, Josephine

2017-01-01

In 2013-2014, about 25,000 the International Black African Student (IBAS) were enrolled in colleges and universities in the United States. It represents an increase of five percent. There is inadequate research on the Participants were at least 18 years of age and holders of F-1 (academic visa) and/or J-1 (exchange visitors) visas. To validate the…

The University Visitor.

ERIC Educational Resources Information Center

Ricquier, William

1978-01-01

Discussed are the origin and nature of visitatorial jurisdiction, the scope of that jurisdiction and the extent to which it is itself reviewable by the courts, and the issue of how relevant the visitor is to today's university. (AF)

Visitor attitudes towards fire and wind disturbances in wilderness

Treesearch

Robert G. Dvorak; Erin D. Small

2011-01-01

This study examines visitor attitudes across the Boundary Waters Canoe Area Wilderness regarding the effects of natural disturbances on visitor planning and wilderness conditions. Visitors were intercepted at entry points and permit distribution locations during 2007. Results suggest that respondents were aware of recent wind and fire disturbances. Few respondents...

77 FR 59221 - Information Collection Activities: Timpanogos Cave National Monument Visitor and Community Survey

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-26

... of how each of the above management issue affects their overall quality of visit experience. Visitors... collect visitors and local community members' perceptions and evaluations of four management issues (1... management issues: (1) Cave tour size and frequency. (2) Ticketing process and fees. (3) Concession service...

Bacillus subtilis ribonucleases J1 and J2 form a complex with altered enzyme behaviour.

PubMed

Mathy, Nathalie; Hébert, Agnès; Mervelet, Peggy; Bénard, Lionel; Dorléans, Audrey; Li de la Sierra-Gallay, Inés; Noirot, Philippe; Putzer, Harald; Condon, Ciarán

2010-01-01

Ribonucleases J1 and J2 are recently discovered enzymes with dual 5'-to-3' exoribonucleolytic/endoribonucleolytic activity that plays a key role in the maturation and degradation of Bacillus subtilis RNAs. RNase J1 is essential, while its paralogue RNase J2 is not. Up to now, it had generally been assumed that the two enzymes functioned independently. Here we present evidence that RNases J1 and J2 form a complex that is likely to be the predominant form of these enzymes in wild-type cells. While both RNase J1 and the RNase J1/J2 complex have robust 5'-to-3' exoribonuclease activity in vitro, RNase J2 has at least two orders of magnitude weaker exonuclease activity, providing a possible explanation for why RNase J1 is essential. The association of the two proteins also has an effect on the endoribonucleolytic properties of RNases J1 and J2. While the individual enzymes have similar endonucleolytic cleavage activities and specificities, as a complex they behave synergistically to alter cleavage site preference and to increase cleavage efficiency at specific sites. These observations dramatically change our perception of how these ribonucleases function and provide an interesting example of enzyme subfunctionalization after gene duplication.

ARE HEALTH VISITORS' OBSERVATIONS OF EARLY PARENT-INFANT INTERACTIONS RELIABLE? A CROSS-SECTIONAL DESIGN.

PubMed

Kristensen, Ingeborg H; Trillingsgaard, Tea; Simonsen, Marianne; Kronborg, Hanne

2017-03-01

Health visitors need competences to promote healthy early parent-infant relationships. The aims of this study were to explore whether there are differences between groups of health visitors with and without additional parenting program education in terms of their knowledge of infant-parent interaction and their observation and assessment skills of such interactions. The cross-sectional study included 36 health visitors' certified Marte Meo therapists and 85 health visitors without additional parenting program education. Health visitors' observation skills were measured assessing five video-recorded mother-infant interactions. A questionnaire was used to measure their intention, self-efficacy, and knowledge. More certified Marte Meo therapists than health visitors without additional parenting program education reported a significantly higher mean level of knowledge of the early relationship, 6.42 (95% CI; 6.18-6.66) versus 5.05 (95% CI; 4.86-6.10), p = .04; and more certified Marte Meo therapists than health visitors without additional parenting program education reported a higher mean level of knowledge of infant self-regulation, 2.44 (95% CI; 2.18-2.71) versus 1.83 (95% CI; 1.62-2.03), p < .001. In the latter group, 54% (95% CI; 0.43-0.64) reported a significantly higher need for further education versus 22% (95% CI; 0.11-0.39), p = .001. Compared to health visitors without any parenting program education, health visitors certified as Marte Meo therapists reported a significantly higher frequency of correct assessment of mothers' sensitivity in two of five video-recordings, with 77.78% (95% CI; 0.61-0.87) compared to 45.88% (95% CI; 0.35-0.57) in Video 3, p = .001, and 69.44% (95% CI; 0.52-0.82) compared to 49.41% (95% CI; 0.39-0.60) in Video 4, p = .04, respectively. The results of the present study support the use of video-based education of health visitors to increase their knowledge of and skills in assessing parent-infant interactions. Randomized controlled

75 FR 8049 - Air University Board of Visitors Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-23

... DEPARTMENT OF DEFENSE Department of the Air Force Air University Board of Visitors Meeting ACTION: Notice of Meeting of the Air University Board of Visitors. SUMMARY: Under the provisions of the Federal... University Board of Visitors' meeting will take place on Monday, March 30th, 2010, from 11 a.m. to 12 p.m...

22 CFR 62.78 - Termination.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Termination. 62.78 Section 62.78 Foreign Relations DEPARTMENT OF STATE PUBLIC DIPLOMACY AND EXCHANGES EXCHANGE VISITOR PROGRAM Student and Exchange Visitor Information System (SEVIS) § 62.78 Termination. An exchange visitor who willfully or negligently...

Health visitor or public health nurse? A Scottish study.

PubMed

Wilson, Susan

2006-09-01

The Scottish Executive and the National Health Service (NHS) have been consistently promoting 'public health nursing' as a new way forward in the community. In addition, since 2001 traditional health visitor and school nurse education programmes have been replaced by a single public health nurse training curriculum. However, many of the roles, responsibilities and job descriptions of clinical health visiting staff have remained unchanged within health board areas. This has led to apparent confusion among staff, both newly qualified and those already in post. This lack of clarity in policy and role prompted this research study, which set out to investigate the perceptions of the public health role of the health visitor within a health board area in Scotland. Initially, a review of the relevant literature was undertaken to provide in-depth background information on the topic, to enable a critical analysis of the current public health role of the health visitor. This analysis was further informed by obtaining qualitative and quantitative data via a questionnaire sent to 89 health visitors, to determine the attitudes and opinions of health visitors currently working within a Scottish health board area. Results from the study indicate that, despite the plethora of public health-related Scottish Executive publications and the changes in educational programmes, many health visitors still carry out what is perceived as a traditional role with mainly the under-five age group. The study also identified the need for clear direction in the public health role for health visitors, with many health visitors expressing a willingness to make changes to their current role.

Do Zoo Visitors Come to Learn? An Internationally Comparative, Mixed-Methods Study

ERIC Educational Resources Information Center

Roe, Katie; McConney, Andrew

2015-01-01

Zoo visitors go to see animals, but are they there to learn? This mixed-methods study examines visitor learning from both zoos' and visitors' perspectives using qualitative and quantitative data. Five hundred and forty zoo visitor interviews from nine case studies provide insight into visitor intentions, which indicate that the majority of…

Control of Expression of the RNases J1 and J2 in Bacillus subtilis

PubMed Central

Jamalli, Ailar; Hébert, Agnès; Zig, Léna

2014-01-01

In Bacillus subtilis, the dual activity 5′ exo- and endoribonucleases J1 and J2 are important players in mRNA and stable RNA maturation and degradation. Recent work has improved our understanding of their structure and mechanism of action and identified numerous RNA substrates. However, almost nothing is known about the expression of these enzymes. Here, we have identified the transcriptional and translational signals that control the expression of the rnjA (RNase J1) and rnjB (RNase J2) genes. While the rnjB gene is transcribed constitutively from a sigma A promoter, optimal expression of RNase J1 requires cotranscription and cotranslation with the upstream ykzG gene, encoding a protein of unknown function. In the absence of coupled translation, RNase J1 expression is decreased more than 5-fold. Transcription of the ykzG operon initiates at a sigma A promoter with a noncanonical −35 box that is required for optimal transcription. Biosynthesis of RNase J1 is autocontrolled within a small range (1.4-fold) and also slightly stimulated (1.4-fold) in the absence of RNase J2. These controls are weak but might be useful to maintain the overall RNase J level and possibly also equimolar amounts of the two nucleases in the cell that primarily act as a heterodimer in vivo. PMID:24187087

Impacts of visitor number on Kangaroos housed in free-range exhibits.

PubMed

Sherwen, Sally L; Hemsworth, Paul H; Butler, Kym L; Fanson, Kerry V; Magrath, Michael J L

2015-01-01

Free range exhibits are becoming increasingly popular in zoos as a means to enhance interaction between visitors and animals. However very little research exists on the impacts of visitors on animal behaviour and stress in free range exhibits. We investigated the effects of visitor number on the behaviour and stress physiology of Kangaroo Island (KI) Kangaroos, Macropus fuliginosus fuliginosus, and Red Kangaroos, Macropus rufus, housed in two free range exhibits in Australian zoos. Behavioural observations were conducted on individual kangaroos at each site using instantaneous scan sampling to record activity (e.g., vigilance, foraging, resting) and distance from the visitor pathway. Individually identifiable faecal samples were collected at the end of each study day and analysed for faecal glucocorticoid metabolite (FGM) concentration. When visitor number increased, both KI Kangaroos and Red Kangaroos increased the time spent engaged in visitor-directed vigilance and KI Kangaroos also increased the time spent engaged in locomotion and decreased the time spent resting. There was no effect of visitor number on the distance kangaroos positioned themselves from the visitor pathway or FGM concentration in either species. While there are limitations in interpreting these results in terms of fear of visitors, there was no evidence of adverse effects animal welfare in these study groups based on avoidance behaviour or stress physiology under the range of visitor numbers that we studied. © 2015 Wiley Periodicals, Inc.

Spatial strategies for managing visitor impacts in National Parks

USGS Publications Warehouse

Leung, Y.-F.; Marion, J.L.

1999-01-01

Resource and social impacts caused by recreationists and tourists have become a management concern in national parks and equivalent protected areas. The need to contain visitor impacts within acceptable limits has prompted park and protected area managers to implement a wide variety of strategies and actions, many of which are spatial in nature. This paper classifies and illustrates the basic spatial strategies for managing visitor impacts in parks and protected areas. A typology of four spatial strategies was proposed based on the recreation and park management literature. Spatial segregation is a common strategy for shielding sensitive resources from visitor impacts or for separating potentially conflicting types of use. Two forms of spatial segregation are zoning and closure. A spatial containment strategy is intended to minimize the aggregate extent of visitor impacts by confining use to limited designated or established Iocations. In contrast, a spatial dispersal strategy seeks to spread visitor use, reducing the frequency of use to levels that avoid or minimize permanent resource impacts or visitor crowding and conflict. Finally, a spatial configuration strategy minimizes impacting visitor behavior though the judicious spatial arrangement of facilities. These four spatial strategics can be implemented separately or in combination at varying spatial scales within a single park. A survey of national park managers provides an empirical example of the diversity of implemented spatial strategies in managing visitor impacts. Spatial segregation is frequently applied in the form of camping restrictions or closures to protect sensitive natural or cultural resources and to separate incompatible visitor activities. Spatial containment is the most widely applied strategy for minimizing the areal extent of resource impacts. Spatial dispersal is commonly applied to reduce visitor crowding or conflicts in popular destination areas but is less frequently applied or

26 CFR 1.1002-1 - Sales or exchanges.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 26 Internal Revenue 11 2013-04-01 2013-04-01 false Sales or exchanges. 1.1002-1 Section 1.1002-1...) INCOME TAXES (CONTINUED) Determination of Amount of and Recognition of Gain Or Loss § 1.1002-1 Sales or exchanges. (a) General rule. The general rule with respect to gain or loss realized upon the sale or...

26 CFR 1.1002-1 - Sales or exchanges.

Code of Federal Regulations, 2012 CFR

2012-04-01

... 26 Internal Revenue 11 2012-04-01 2012-04-01 false Sales or exchanges. 1.1002-1 Section 1.1002-1...) INCOME TAXES (CONTINUED) Determination of Amount of and Recognition of Gain Or Loss § 1.1002-1 Sales or exchanges. (a) General rule. The general rule with respect to gain or loss realized upon the sale or...

VISITORS AND PERSONNEL

Science.gov Websites

RESPONSIBILITY CENTCOM COALITION MEDIA SOCIAL MEDIA NEWS ARTICLES PRESS RELEASES IMAGERY VIDEOS TRANSCRIPTS VISITORS AND PERSONNEL FAMILY CENTER FAMILY READINESS CENTCOM WEBMAIL SOCIAL MEDIA SECURITY ACCOUNTABILITY Inherent Resolve Resolute Support Media Social Media News Articles Press Releases Video And Imagery

Influences on visitor behavior at a modern immersive zoo exhibit.

PubMed

Ross, Stephen R; Gillespie, Katie L

2009-09-01

Zoos serve as centers for both research and education. The challenge is to convey messages about their conservation projects while meeting visitor expectations, which often include recreation and entertainment. One way this can be achieved is through the design of immersive exhibits that draw visitors in and engage them with interactive educational elements. Regenstein African Journey (RAJ) opened at Lincoln Park Zoo in 2003 and was designed to take visitors on a simulated safari through Africa. Because visitor experience was a major design goal, we conducted a timing and tracking study to evaluate use of the building and educational components. For a 9-week period in 2003, we tracked 338 visitors to RAJ and recorded continuous data as they moved through the building. Data were collected on handheld computers that provided precise timing data. The median visit was 11.08 min, 41% of which was spent looking at animals and 9% of which was spent engaged with interpretive elements. We found significant differences in the way visitors used signage: those in groups without children spent more of their visit engaged with signage than those with children and visitors who spent more of their visit interacting socially spent less time engaged with signage. By understanding how visitors use the educational opportunities presented to them, we can better meet their expectations and more effectively achieve the goal of conservation education.

Solar space heating for the Visitors Center, Stephens College, Columbia, Missouri

NASA Technical Reports Server (NTRS)

1980-01-01

The solar energy system located at the Visitors' Center on the Stephens College Campus, Columbia, Missouri is discussed. The system is installed in a four-story, 15,000 square foot building. The solar energy system is an integral design of the building and utilizes 176 hydronic flat plate collectors which use a 50 percent water ethylene blycol solution and water-to-water heat exchanger. Solar heated water is stored in a 5,000 gallon water storage tank located in the basement equipment room. A natural gas fired hot water boiler supplies hot water when the solar energy heat supply fails to meet the demand. The designed solar contribution is 71 percent of the heating load.

How wilderness visitors choose entry points and campsites

Treesearch

Robert C. Lucas

1990-01-01

The process of selecting trailheads and campsites is described for visitors to the Bob Marshall Wilderness complex in Montana. Factors influencing decisions by different types of visitors are analyzed. Implications, particularly for information and education programs, are presented.

Colonial National Historical Park 2010 visitor/motorist survey.

DOT National Transportation Integrated Search

2011-05-31

This report presents findings and recommendations from a 2010 survey of visitors not using a seasonal shuttle bus at Colonial National Historical Park. The survey asked visitors for basic demographic information, level of awareness of the shuttle, in...

Biosorption of Pb (II) from aqueous solution by extracellular polymeric substances extracted from Klebsiella sp. J1: Adsorption behavior and mechanism assessment

NASA Astrophysics Data System (ADS)

Wei, Wei; Wang, Qilin; Li, Ang; Yang, Jixian; Ma, Fang; Pi, Shanshan; Wu, Dan

2016-08-01

The adsorption performance and mechanism of extracellular polymeric substances (EPS) extracted from Klebsiella sp. J1 for soluble Pb (II) were investigated. The maximum biosorption capacity of EPS for Pb (II) was found to be 99.5 mg g-1 at pH 6.0 and EPS concentration of 0.2 g/L. The data for adsorption process satisfactorily fitted to both Langmuir isotherm and pseudo-second order kinetic model. The mean free energy E and activation energy Ea were determined at 8.22- 8.98 kJ mol-1 and 42.46 kJ mol-1, respectively. The liquid-film diffusion step might be the rate-limiting step. The thermodynamic parameters (ΔGo, ΔHo and ΔSo) revealed that the adsorption process was spontaneous and exothermic under natural conditions. The interactions between EPS system and Pb (II) ions were investigated by qualitative analysis methods (i.e Zeta potential, FT-IR and EDAX). Based on the strong experimental evidence from the mass balance of the related elements participating in the sorption process, an ion exchange process was identified quantitatively as the major mechanism responsible for Pb (II) adsorption by EPS. Molar equivalents of both K+ and Mg2+ could be exchanged with Pb2+ molar equivalents in the process and the contribution rate of ion exchange to adsorption accounted for 85.72% (Δmequiv = -0.000541).

Biosorption of Pb (II) from aqueous solution by extracellular polymeric substances extracted from Klebsiella sp. J1: Adsorption behavior and mechanism assessment

PubMed Central

Wei, Wei; Wang, Qilin; Li, Ang; Yang, Jixian; Ma, Fang; Pi, Shanshan; Wu, Dan

2016-01-01

The adsorption performance and mechanism of extracellular polymeric substances (EPS) extracted from Klebsiella sp. J1 for soluble Pb (II) were investigated. The maximum biosorption capacity of EPS for Pb (II) was found to be 99.5 mg g−1 at pH 6.0 and EPS concentration of 0.2 g/L. The data for adsorption process satisfactorily fitted to both Langmuir isotherm and pseudo-second order kinetic model. The mean free energy E and activation energy Ea were determined at 8.22– 8.98 kJ mol−1 and 42.46 kJ mol−1, respectively. The liquid-film diffusion step might be the rate-limiting step. The thermodynamic parameters (ΔGo, ΔHo and ΔSo) revealed that the adsorption process was spontaneous and exothermic under natural conditions. The interactions between EPS system and Pb (II) ions were investigated by qualitative analysis methods (i.e Zeta potential, FT-IR and EDAX). Based on the strong experimental evidence from the mass balance of the related elements participating in the sorption process, an ion exchange process was identified quantitatively as the major mechanism responsible for Pb (II) adsorption by EPS. Molar equivalents of both K+ and Mg2+ could be exchanged with Pb2+ molar equivalents in the process and the contribution rate of ion exchange to adsorption accounted for 85.72% (Δmequiv = −0.000541). PMID:27514493

Visitor employed photography: its potential and use in evaluating visitors' perceptions of resource impacts in trail and park settings

Treesearch

Catherine E. Dorwart; Roger L. Moore; Yu-Fai Leung

2007-01-01

The purpose of this study was to examine visitors' perceptions and to determine how their perceptions affected overall recreation experiences along a 2.9-mile segment of the Appalachian Trail in the Great Smoky Mountains National Park. A purposive sample of 28 visitors was selected for this study. The study consisted of three parts, including a trail impact...

Overseas visitor deaths in Australia, 2001 to 2003.

PubMed

Leggat, Peter A; Wilks, Jeff

2009-01-01

The health and safety of international visitors remain an important issue for Australia and other tourist destinations. The death of visitors remains an important indicator of safety. The aim of this study was to provide updated figures on deaths of overseas travelers in Australia. Data were sourced from the Australian Bureau of Statistics concerning deaths of overseas visitors for the years 2001 to 2003. There were 1,068 overseas visitor deaths (701 males, 66%) during the study period 2001 to 2003. Death by natural causes increased with age, while deaths associated with accidents were more frequent among younger age groups. The majority of deaths were from natural causes (782, 73%), particularly ischemic heart diseases (26%). There were a total of 247 accidental deaths (23% of all deaths) with the main causes being transportation accidents (14% of all deaths) and accidental drowning/submersion (5% of all deaths). The countries contributing the most deaths were the UK (247, 23%), New Zealand (108, 10%) Melanesia/Micronesia (95, 9%), and the United States (57, 5%). Australia remains a relatively safe destination for international travelers, at least in terms of fatalities, which appear to be declining. Most deaths of overseas tourists in Australia are due to natural causes with cardiovascular disease being the predominant cause of death in this group. Accidents remain the most common preventable cause of death of travelers, with road and water safety being the major issues. It is important that tourism and travel medicine groups continue to advocate for improved health and safety of international travelers visiting Australia.

Investigating Visitor Profiles as a Valuable Addition to Museum Research

ERIC Educational Resources Information Center

Lewalter, Doris; Phelan, Siëlle; Geyer, Claudia; Specht, Inga; Grüninger, Rahel; Schnotz, Wolfgang

2015-01-01

There is a long tradition of museum research assessing visitors' personal background. In this article, we suggest an insightful way to enhance and intensify visitor analyses and adopt a more integrative approach. To this end, we draw attention to Latent Class Analysis (LCA), a classification method that allows us to investigate visitor profiles…

Visitors' perceptions of tourism development in West Virginia

Treesearch

Jinyang Deng; Maureen Young Bender

2008-01-01

Previous studies indicate that tourists' destination choices are increasingly influenced by perceptions of sustainability but research into tourists' insights and sensitivities about sustainability is lacking. This study examines how visitors to West Virginia perceive tourism development in the state. Findings indicate that visitors' perceptions are...

Reducing visitor noise levels at Muir Woods National Monument using experimental management.

PubMed

Stack, David W; Peter, Newman; Manning, Robert E; Fristrup, Kurt M

2011-03-01

Noise impacts resources and visitor experience in many protected natural areas, and visitors can be the dominant source of noise. This experimental study tested the efficacy and acceptability of signs asking visitors to be quiet at Muir Woods National Monument, California. Signs declaring a "quiet zone" (at the park's Cathedral Grove) or a "quiet day" (throughout the park) were posted on a randomized schedule that included control days (no signs). Visitor surveys were conducted to measure the cognitive and behavioral responses of visitors to the signs and test the acceptability of these management practices to visitors. Visitors were highly supportive of these management practices and reported that they consciously limited the amount of noise they produced. Sound level measurements showed substantial decreases on days when signs were posted. © 2011 Acoustical Society of America

Analyzing traffic source impact on returning visitors ratio in information provider website

NASA Astrophysics Data System (ADS)

Prasetio, A.; Sari, P. K.; Sharif, O. O.; Sofyan, E.

2016-04-01

Web site performance, especially returning visitor is an important metric for an information provider web site. Since high returning visitor is a good indication of a web site’s visitor loyalty, it is important to find a way to improve this metric. This research investigated if there is any difference on returning visitor metric among three web traffic sources namely direct, referral and search. Monthly returning visitor and total visitor from each source is retrieved from Google Analytics tools and then calculated to measure returning visitor ratio. The period of data observation is from July 2012 to June 2015 resulting in a total of 108 samples. These data then analysed using One-Way Analysis of Variance (ANOVA) to address our research question. The results showed that different traffic source has significantly different returning visitor ratio especially between referral traffic source and the other two traffic sources. On the other hand, this research did not find any significant difference between returning visitor ratio from direct and search traffic sources. The owner of the web site can focus to multiply referral links from other relevant sites.

An exploration of visitor motivations: The search for silence

NASA Astrophysics Data System (ADS)

Marin, Lelaina D.

2011-12-01

This research aims to study the relationship between visitor motivations for experiencing solitude, sounds of nature, and quiet and a visitor's soundscape experience. This relationship will improve managers' ability to provide satisfying and diverse experiences for their visitors and "protect" something that is increasingly rare outside of national parks and other protected natural areas; natural sounds and quiet. Chapter 1 focuses on the effect motivation for a quiet setting can have on acceptability of natural or human-caused sound in Muir Woods National Monument. This study used a dose-response methodology where visitors listened to five audio recordings varying in the percentage of time that human-caused sound was louder than natural sound (percent time above). Visitors were then asked to rate the acceptability of each recording. Three sound-related motivations for visiting Muir Woods were examined: "enjoying peace and quiet", "hearing sounds of nature" and "experiencing solitude." Cluster analysis was used to identify discrete groups with similar motivational profiles (i.e., low, moderate and high motivation for quiet). Results indicated that as percent time above natural sound increased, visitor ratings of human-caused sound decreased. Tolerance for human-caused sound also decreased as motivation for quiet increased. Consensus regarding the acceptability of sound was greatest when the percent time above natural sound was lowest (i.e., quietest sounds). Chapter 2 describes a study of the ability of motivations to predict which of three locations a visitor would most likely choose for recreation. Particular focus was given to sound-related motivations. Data for this study were collected at three sites with varying visitation levels within two national parks; Sequoia National Park-backcountry (low visitation), Sequoia National Park-frontcountry (moderate visitation), and Muir Woods National Monument-frontcountry (high visitation). Survey respondents were asked

Challenges in health visitor prescribing in a London primary care trust.

PubMed

Thurtle, Val

2007-11-01

In this primary care trust there was limited health visitor prescribing. A case study approach sought to identify reasons for this, to lead to recommendations and changes to develop health visitor prescribing. The situation was examined using qualitative methods to consider the opportunities and challenges in health visitor prescribing. Semi-structured interviews with eighteen health visitors and managers explored their views of health visitor prescribing and its position within the PCT. The findings demonstrated only three health visitors prescribed; yet the majority were positive about prescribing, both for clients and health visitor development. Practitioners recognised their difficult working context and felt that organisational systems were not supportive of prescribing. A culture of prescribing was not felt to be in evidence, but was seen as a realistic possibility. Recommendations for change focused on the organisation and practitioners, with improved communication and structures supportive of prescribing. There was a need for practitioners to be active in learning so that they could share knowledge, experience and commitment to prescribing in locally based groups.

Visitor's Guide | FNLCR Staging

Cancer.gov

The Frederick National Laboratory for Cancer Research is located within theFort Detrick U.S. Army facilityin Frederick, Maryland. All visitors must enter through Nallin Gate, which is located onOpossumtown Pike at Amber Road. The Na

National wildlife refuge visitor survey 2012--Individual refuge results

USGS Publications Warehouse

Dietsch, Alia M.; Sexton, Natalie R.; Koontz, Lynne M.; Conk, Shannon J.

2013-01-01

The National Wildlife Refuge System (Refuge System), established in 1903 and managed by the U.S. Fish and Wildlife Service (Service), is the leading network of protected lands and waters in the world dedicated to the conservation of fish, wildlife and their habitats. There are 560 national wildlife refuges and 38 wetland management districts nationwide, encompassing more than 150 million acres. The Refuge System attracts nearly 45 million visitors annually, including 34.8 million people who observe and photograph wildlife, 9.6 million who hunt and fish, and nearly 675,000 teachers and students who use refuges as outdoor classrooms. Understanding visitor perceptions of refuges and characterizing their experiences on refuges are critical elements of managing these lands and meeting the goals of the Refuge System. The Service collaborated with the U.S. Geological Survey to conduct a national survey of visitors regarding their experiences on national wildlife refuges. The purpose of the survey was to better understand visitor experiences and trip characteristics, to gauge visitors’ levels of satisfaction with existing recreational opportunities, and to garner feedback to inform the design of programs and facilities. The survey results will inform performance, planning, budget, and communications goals. Results will also inform Comprehensive Conservation Plans (CCPs), visitor services, and transportation planning processes. This Data Series consists of 25 separate data files. Each file describes the results of the survey for an individual refuge and contains the following information: • Introduction: An overview of the Refuge System and the goals of the national surveying effort. • Methods: The procedures for the national surveying effort, including selecting refuges, developing the survey instrument, contacting visitors, and guidance for interpreting the results.• Refuge Description: A brief description of the refuge location, acreage, purpose, recreational

Split Active Asteroid P/2016 J1 (PANSTARRS)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hui, Man-To; Jewitt, David; Du, Xinnan, E-mail: pachacoti@ucla.edu

We present a photometric and astrometric study of the split active asteroid P/2016 J1 (PANSTARRS). The two components (hereafter J1-A and J1-B) separated either ∼1500 days (2012 May to June) or 2300 days (2010 April) prior to the current epoch, with a separation speed V {sub sep} = 0.70 ± 0.02 m s{sup −1} for the former scenario and 0.83 ± 0.06 m s{sup −1} for the latter. Keck photometry reveals that the two fragments have similar, Sun-like colors that are comparable to the colors of primitive C- and G-type asteroids. With a nominal comet-like albedo, p{sub R} = 0.04, the effective, dust-contaminated cross sections are estimated tomore » be 2.4 km{sup 2} for J1-A and 0.5 km{sup 2} for J1-B. We estimate that the nucleus radii lie in the range 140 ≲  R {sub N} ≲ 900 m for J1-A and 40 ≲  R {sub N} ≲ 400 m for J1-B. A syndyne–synchrone simulation shows that both components have been active for 3–6 months, by ejecting dust grains at speeds ∼0.5 m s{sup −1} with rates ∼1 kg s{sup −1} for J1-A and 0.1 kg s{sup −1} for J1-B. In its present orbit, the rotational spin-up and devolatilization times of 2016 J1 are very small compared to the age of the solar system, raising the question of why this object still exists. We suggest that ice that was formerly buried within this asteroid became exposed at the surface, perhaps via a small impact, and that sublimation torques then rapidly drove it to breakup. Further disintegration events are anticipated owing to the rotational instability.« less

Long-Term Prediction of Emergency Department Revenue and Visitor Volume Using Autoregressive Integrated Moving Average Model

PubMed Central

Chen, Chieh-Fan; Ho, Wen-Hsien; Chou, Huei-Yin; Yang, Shu-Mei; Chen, I-Te; Shi, Hon-Yi

2011-01-01

This study analyzed meteorological, clinical and economic factors in terms of their effects on monthly ED revenue and visitor volume. Monthly data from January 1, 2005 to September 30, 2009 were analyzed. Spearman correlation and cross-correlation analyses were performed to identify the correlation between each independent variable, ED revenue, and visitor volume. Autoregressive integrated moving average (ARIMA) model was used to quantify the relationship between each independent variable, ED revenue, and visitor volume. The accuracies were evaluated by comparing model forecasts to actual values with mean absolute percentage of error. Sensitivity of prediction errors to model training time was also evaluated. The ARIMA models indicated that mean maximum temperature, relative humidity, rainfall, non-trauma, and trauma visits may correlate positively with ED revenue, but mean minimum temperature may correlate negatively with ED revenue. Moreover, mean minimum temperature and stock market index fluctuation may correlate positively with trauma visitor volume. Mean maximum temperature, relative humidity and stock market index fluctuation may correlate positively with non-trauma visitor volume. Mean maximum temperature and relative humidity may correlate positively with pediatric visitor volume, but mean minimum temperature may correlate negatively with pediatric visitor volume. The model also performed well in forecasting revenue and visitor volume. PMID:22203886

Long-term prediction of emergency department revenue and visitor volume using autoregressive integrated moving average model.

PubMed

Chen, Chieh-Fan; Ho, Wen-Hsien; Chou, Huei-Yin; Yang, Shu-Mei; Chen, I-Te; Shi, Hon-Yi

2011-01-01

This study analyzed meteorological, clinical and economic factors in terms of their effects on monthly ED revenue and visitor volume. Monthly data from January 1, 2005 to September 30, 2009 were analyzed. Spearman correlation and cross-correlation analyses were performed to identify the correlation between each independent variable, ED revenue, and visitor volume. Autoregressive integrated moving average (ARIMA) model was used to quantify the relationship between each independent variable, ED revenue, and visitor volume. The accuracies were evaluated by comparing model forecasts to actual values with mean absolute percentage of error. Sensitivity of prediction errors to model training time was also evaluated. The ARIMA models indicated that mean maximum temperature, relative humidity, rainfall, non-trauma, and trauma visits may correlate positively with ED revenue, but mean minimum temperature may correlate negatively with ED revenue. Moreover, mean minimum temperature and stock market index fluctuation may correlate positively with trauma visitor volume. Mean maximum temperature, relative humidity and stock market index fluctuation may correlate positively with non-trauma visitor volume. Mean maximum temperature and relative humidity may correlate positively with pediatric visitor volume, but mean minimum temperature may correlate negatively with pediatric visitor volume. The model also performed well in forecasting revenue and visitor volume.

National wildlife refuge visitor survey 2010/2011: Individual refuge results

USGS Publications Warehouse

Sexton, Natalie R.; Dietsch, Alia M.; Don Carlos, Andrew W.; Koontz, Lynne M.; Solomon, Adam N.; Miller, Holly M.

2012-01-01

The National Wildlife Refuge System (Refuge System), established in 1903 and managed by the U.S. Fish and Wildlife Service (Service), is the leading network of protected lands and waters in the world dedicated to the conservation of fish, wildlife and their habitats. There are 556 national wildlife refuges and 38 wetland management districts nationwide, encompassing more than 150 million acres. The Refuge System attracts more than 45 million visitors annually, including 25 million people per year to observe and photograph wildlife, over 9 million to hunt and fish, and more than 10 million to participate in educational and interpretation programs. Understanding visitors and characterizing their experiences on national wildlife refuges are critical elements of managing these lands and meeting the goals of the Refuge System. The Service collaborated with the U.S. Geological Survey to conduct a national survey of visitors regarding their experiences on national wildlife refuges. The survey was conducted to better understand visitor needs and experiences and to design programs and facilities that respond to those needs. The survey results will inform Service performance planning, budget, and communications goals. Results will also inform Comprehensive Conservation Plan (CCPs), Visitor Services, and Transportation Planning processes. This data series consists of 53 separate data files. Each file describes the results of the survey for an individual refuge and contains the following information: * Introduction: An overview of the Refuge System and the goals of the national surveying effort. * Methods: The procedures for the national surveying effort, including selecting refuges, developing the survey instrument, contacting visitors, and guidance for interpreting the results. * Refuge Description: A brief description of the refuge location, acreage, purpose, recreational activities, and visitation statistics, including a map (where available) and refuge website link

The significance of visitors' pressure for soil status in an urban park in Tel-Aviv

NASA Astrophysics Data System (ADS)

Zhevelev, Helena; Sarah, Pariente; Oz, Atar

2010-05-01

A park is one of the most important elements of sustainable development and optimization of the urban environment. The equilibrium within the complex of natural and anthropogenic factors defines the status of a park's ecosystem. The seasonal dynamics and spatial variations of soil properties in areas under differing levels of visitors' pressure were studied in a park in Tel-Aviv. Soil was sampled twice a year, in wet (March) and dry (July) seasons, from three types of areas, subjected to differing levels of visitors' pressure: high, low and none (control). In each type of area samples were taken from two depths (0-2 cm and 5-10 cm), at 14-39 points. In total, 268 soil samples were taken. Before the soil sampling, penetration depth was determined at each point. In addition, the numbers of barbecue fires in each of the three areas were counted. Gravimetric soil moisture, organic matter, pH, electrical conductivity, and soluble ions were measured in 1:1 water extraction. Penetration depth and electrical conductivity, and organic matter, sodium, potassium and chlorite contents differed under differing levels of visitors' pressure, whereas soil moisture, pH and calcium content exhibited only minor differences. Soil moisture, electrical conductivity, and magnesium and chlorite contents exhibited strong seasonal changes, whereas the organic matter, potassium and pH levels were unaffected by seasonal dynamics. Calcium, organic matter, magnesium and chlorite contents, and electrical conductivity were significantly affected by the depth of soil sampling, whereas pH was not so affected. The seasonal changes in soil properties in the area subjected to high visitors' pressure were higher than in the one under low visitors' pressure. In most cases, visitors' pressure led to increases in variance and coefficient of variation. Different soil properties were differently affected by visitors' pressure, seasonal dynamics and soil depth. The surface of the soil was more sensitive to

76 FR 5143 - Board of Visitors, United States Military Academy (USMA)

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-28

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy... committee meeting for the United States Military Academy Board of Visitors. This is the 2011 Organizational... Committee: United States Military Academy Board of Visitors. 2. Date: Wednesday, February 16, 2011. [[Page...

Development of the Virtual Visitor Center at SLAC

DOE Office of Scientific and Technical Information (OSTI.GOV)

McDunn, Ruth

1999-11-17

The Virtual Visitor Center (VVC) web site (www2.slac.stanford.edu/vvc) is a ''virtual'' version of the Visitor Center, a mini science museum that opened at SLAC in 1996. The VVC was made public in December 1998. Both centers contribute to SLAC mission regarding education of the next generation and increasing scientific awareness of the public. The site is designed to mimic the real visitor center and allow a larger audience to the information. The intent was to reach the 8th-12th grade audience. Considerable effort was made to organize the content, including color-coding graphical elements for each main topic area. Tables of contents,more » a search tool, several photo tours, as well as graphical and non-graphical menu bars allow users many methods of navigating the site. The site was developed over almost two years using an estimated .95 FTE, split between a program manager, graphic designer, content provider (theoretical physicist), and a summer intern (high school teacher). As of November 1999, the site consists of 1,147 files, 935 images, 3,080 internal hyperlinks, and 190 external hyperlinks. The site has had over 1 million hits between January and mid-October 1999 and averages about 600 page views each day. Future plans include bringing the web site into compliance with the W3Cs Web Content Accessibility guidelines, thoroughly integrating the glossary terms, continued incorporation of current research at SLAC, and adding more interactivity.« less

What is the best?: simple versus visitor restricted rest period.

PubMed

Silvius-Byron, Stephanie A; Florimonte, Christine; Panganiban, Elizabeth G; Ulmer, Janice Fitzgerald

2014-05-01

The aim of this study was to compare a highly structured planned rest protocol that includes visitor and healthcare personnel restrictions with a simple planned rest period that encourages patients to rest during a designated time without restriction of visitors and healthcare personnel. Many hospitals acute care have begun to restrict visitors and nonessential health team interventions during specific times despite the lack of experimentally designed studies. Using a convenience sample of 52 intermediate care unit patients, a randomized experimental design study compared a highly structured planned rest protocol with restriction of visitors/healthcare personnel to a simple planned rest period without restrictions. The primary outcome variable was the patient's perceived quality of rest after a 2-hour rest period. Intermediate care patients' perception of rest and sleep during a designated rest period was similar whether elaborate rest strategies were used, including visitor and healthcare personnel restrictions, or if it was only suggested they rest and the door to their room closed. The restriction of visitors and healthcare personnel during a 2-hour rest period did not improve the patient's perception of rest or how long it took them to go to sleep.

Icy Visitor from Beyond

NASA Image and Video Library

2010-10-05

This visitor from deep space, seen here by NASA Wide-field Infrared Survey Explorer, is comet Hartley 2, the destination for NASA EPOXI mission. The comet tail is seen here as a fuzzy streak to the right of the comet.

Combining microscopic and macroscopic probes to untangle the single-ion anisotropy and exchange energies in an S = 1 quantum antiferromagnet [Combining micro- and macroscopic probes to untangle single-ion and spatial exchange anisotropies in a S = 1 quantum antiferromagnet

DOE PAGES

Brambleby, Jamie; Manson, Jamie L.; Goddard, Paul A.; ...

2017-04-20

The magnetic ground state of the quasi-one-dimensional spin-1 antiferromagnetic chain is sensitive to the relative sizes of the single-ion anisotropy (D) and the intrachain (J) and interchain (J') exchange interactions. The ratios D/J and J' /J dictate the material's placement in one of three competing phases: a Haldane gapped phase, a quantum paramagnet, and an XY-ordered state, with a quantum critical point at their junction. We have identified [Ni(HF 2)(pyz) 2] SbF 6, where pyz = pyrazine, as a rare candidate in which this behavior can be explored in detail. Combining neutron scattering (elastic and inelastic) in applied magnetic fieldsmore » of up to 10 tesla and magnetization measurements in fields of up to 60 tesla with numerical modeling of experimental observables, we are able to obtain accurate values of all of the parameters of the Hamiltonian [D = 13.3(1) K, J = 10.4(3) K, and J' = 1.4(2) K], despite the polycrystalline nature of the sample. Density-functional theory calculations result in similar couplings (J = 9.2 K, J' = 1.8 K) and predict that the majority of the total spin population resides on the Ni(II) ion, while the remaining spin density is delocalized over both ligand types. Finally, the general procedures outlined in this paper permit phase boundaries and quantum-critical points to be explored in anisotropic systems for which single crystals are as yet unavailable.« less

43 CFR 3436.1 - Coal lease exchanges.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 43 Public Lands: Interior 2 2013-10-01 2013-10-01 false Coal lease exchanges. 3436.1 Section 3436..., DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) NONCOMPETITIVE LEASES Coal Lease and Coal Land Exchanges: Alluvial Valley Floors § 3436.1 Coal lease exchanges. ...

43 CFR 3436.1 - Coal lease exchanges.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 43 Public Lands: Interior 2 2011-10-01 2011-10-01 false Coal lease exchanges. 3436.1 Section 3436..., DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) NONCOMPETITIVE LEASES Coal Lease and Coal Land Exchanges: Alluvial Valley Floors § 3436.1 Coal lease exchanges. ...

43 CFR 3436.1 - Coal lease exchanges.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 43 Public Lands: Interior 2 2014-10-01 2014-10-01 false Coal lease exchanges. 3436.1 Section 3436..., DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) NONCOMPETITIVE LEASES Coal Lease and Coal Land Exchanges: Alluvial Valley Floors § 3436.1 Coal lease exchanges. ...

43 CFR 3436.1 - Coal lease exchanges.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 43 Public Lands: Interior 2 2012-10-01 2012-10-01 false Coal lease exchanges. 3436.1 Section 3436..., DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) NONCOMPETITIVE LEASES Coal Lease and Coal Land Exchanges: Alluvial Valley Floors § 3436.1 Coal lease exchanges. ...

Geology Exchange Program

NASA Astrophysics Data System (ADS)

Because geology professors cannot bring ore deposits from around the globe into their classrooms, the next best thing is to take their students to the deposits, according to David Norman, an associate professor of geochemistry at New Mexico Tech and Angus Moore of the Royal School of Mines. They organized a new exchange program between the New Mexico Institute of Mining and Technology in Socorro, N.M., and the Royal School of Mines in London, England. In May, 14 students from England toured deposits in New Mexico, Arizona, Utah, and Colorado; in the photograph, Norman (on the right) describes a rock from a New Mexico ore deposit to some of the visitors from England. In early June a contingency from New Mexico Tech began studying deposits in England, Spain, and Portugal. Norman and Moore say that the exchange program may be expanded next year.

Characterization of Park Visitors, Visitation Levels, and Associated Economic Impacts of Recreation at Bull Shoals, Norfork, and Table Rock Lakes

DTIC Science & Technology

2010-11-01

ER D C/ EL T R- 10 -1 8 Recreation Management Support Program Characterization of Park Visitors, Visitation Levels, and Associated...distribution is unlimited. Recreation Management Support Program ERDC/EL TR-10-18 November 2010 Characterization of Park Visitors, Visitation ...surrounding the lakes. The report also examines visitor recreation patterns, visitor perceptions of lake and park attributes that affect the

Acadia National Park ITS field operational test : visitor survey

DOT National Transportation Integrated Search

2003-02-01

In 2002, as part of the Acadia National Park Field Operational Test, Intelligent Transportation Systems (ITS) components were deployed to help visitors travel around Mount Desert Island and in Acadia National Park. Using data from surveys of visitors...

Typhoid fever among Swedish visitors to Kos in 1983.

PubMed

Christenson, B; Andersson, Y

1985-05-01

Seven cases of confirmed typhoid fever were discovered among 26 Swedish visitors to the Greek island of Kos in 1983. They had all stayed at the same hotel during the last week of June and the first week of July. During the same period 32 British visitors and 16 visitors from other Scandinavian countries who stayed at the implicated hotel also developed typhoid fever. By analysing questionnaires and by personally interviewing the Swedish visitors, a close association with the eating of salad at dinner on the 4th of July was found. As soon as the first Swedish case was discovered, a carrier among the hotel staff was suspected because it was known that one Swedish and one Finnish case of typhoid fever had been reported in 1981 and 1982 respectively, both patients having stayed at the implicated hotel.

EFT-1 Crew Module Move to KSC Visitor Complex for Exhibit Display

NASA Image and Video Library

2017-04-10

The Orion crew module that traveled into space on Exploration Fight Test 1 (EFT-1) completed a different kind of trip recently at NASA's Kennedy Space Center in Florida. Secured on a custom-made ground support equipment transporter, Orion was moved from the Neil Armstrong Operations and Checkout Building to the Kennedy Space Center Visitor Complex, less than three miles down the road. The crew module will become part of the NASA Now exhibit inside the IMAX theater at the complex.The Orion spacecraft launched atop a United Launch Alliance Delta IV rocket Dec. 5, 2014, from Space Launch Complex 37 at Cape Canaveral Air Force Station in Florida. During the mission, the spacecraft traveled 3,604 miles above Earth, the first U.S. spacecraft designed to carry humans to go beyond low-Earth orbit in 42 years. The Orion crew module splashed down approximately 4.5 hours later in the Pacific Ocean, 600 miles off the shore of California.

Evidence for a SN2-type pathway in the exchange of phosphines at a [PhSe]+ centre.

PubMed

Forfar, Laura C; Green, Michael; Haddow, Mairi F; Hussein, Sharifa; Lynam, Jason M; Slattery, John M; Russell, Christopher A

2015-01-07

A range of thio- and seleno-phosphonium cationic complexes [RE(PR'3)](+)[X](-) (R = Me, Ph; E = S, Se; X = GaCl4, SbF6) have been synthesised and structurally characterised. Reaction of [PhSPPh3][GaCl4] and [PhSePPh3][GaCl4] with P(t)Bu3 results in the ready transfer of the "RS(+)" and "RSe(+)" fragments from PPh3 to the stronger electron donor P(t)Bu3. NMR experiments combined with an Eyring analysis on the corresponding degenerate phosphine exchange reaction allowed the thermodynamic values for the phosphine exchange reaction of the sulfur cation (ΔH(‡) 18.7 ± 12.0 kJ mol(-1); ΔS(‡) -99.3 ± 36.3 J mol(-1) K(-1)) to be compared with the corresponding values (ΔH(‡) 2.4 ± 1.1 kJ mol(-1) and ΔS(‡) -58.1 ± 5.0 J mol(-1) K(-1)) for the [PhSePPh3](+) system. Importantly, the large negative entropy of activation and linear dependence on the rate of exchange are compatible with an SN2-type exchange process. This conclusion is supported by DFT calculations which confirm that the phosphine exchange process occurs via an associative mechanism. The rate of exchange was found to increase from sulfur to selenium and those with aryl substituents underwent exchange faster than those with alkyl substituents.

78 FR 65977 - Board of Visitors, United States Military Academy (USMA)

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-04

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy...: United States Military Academy Board of Visitors. 2. Date: Wednesday, October 16, 2013. 3. Time: 2:00 p.m... Cancellation: Due to the lack of a continuing resolution and appropriated funds, the USMA Board of Visitors...

Creating Safe(r) Spaces for Visitors and Staff in Museum Programs

ERIC Educational Resources Information Center

Katrikh, Mark

2018-01-01

Visitors come to museums for many reasons, including to learn something new about our world, not specifically to have an emotional response. Visitors unprepared for personal experiences can manifest their confusion in a multitude of ways. Anticipating such reactions, museums must engage in dialogue, to help visitors process emotions and ultimately…

43 CFR 3435.1 - Coal lease exchanges.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 43 Public Lands: Interior 2 2012-10-01 2012-10-01 false Coal lease exchanges. 3435.1 Section 3435..., DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) NONCOMPETITIVE LEASES Lease Exchange § 3435.1 Coal lease exchanges. Where the Secretary determines that coal exploration, development and mining operations...

43 CFR 3435.1 - Coal lease exchanges.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 43 Public Lands: Interior 2 2013-10-01 2013-10-01 false Coal lease exchanges. 3435.1 Section 3435..., DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) NONCOMPETITIVE LEASES Lease Exchange § 3435.1 Coal lease exchanges. Where the Secretary determines that coal exploration, development and mining operations...

43 CFR 3435.1 - Coal lease exchanges.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 43 Public Lands: Interior 2 2014-10-01 2014-10-01 false Coal lease exchanges. 3435.1 Section 3435..., DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) NONCOMPETITIVE LEASES Lease Exchange § 3435.1 Coal lease exchanges. Where the Secretary determines that coal exploration, development and mining operations...

43 CFR 3435.1 - Coal lease exchanges.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 43 Public Lands: Interior 2 2011-10-01 2011-10-01 false Coal lease exchanges. 3435.1 Section 3435..., DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) NONCOMPETITIVE LEASES Lease Exchange § 3435.1 Coal lease exchanges. Where the Secretary determines that coal exploration, development and mining operations...

SVM to detect the presence of visitors in a smart home environment.

PubMed

Petersen, Johanna; Larimer, Nicole; Kaye, Jeffrey A; Pavel, Misha; Hayes, Tamara L

2012-01-01

With the rising age of the population, there is increased need to help elderly maintain their independence. Smart homes, employing passive sensor networks and pervasive computing techniques, enable the unobtrusive assessment of activities and behaviors of the elderly which can be useful for health state assessment and intervention. Due to the multiple health benefits associated with socializing, accurately tracking whether an individual has visitors to their home is one of the more important aspects of elders' behaviors that could be assessed with smart home technology. With this goal, we have developed a preliminary SVM model to identify periods where untagged visitors are present in the home. Using the dwell time, number of sensor firings, and number of transitions between major living spaces (living room, dining room, kitchen and bathroom) as features in the model, and self report from two subjects as ground truth, we were able to accurately detect the presence of visitors in the home with a sensitivity and specificity of 0.90 and 0.89 for subject 1, and of 0.67 and 0.78 for subject 2, respectively. These preliminary data demonstrate the feasibility of detecting visitors with in-home sensor data, but highlight the need for more advanced modeling techniques so the model performs well for all subjects and all types of visitors.

Engaging Parents in Early Head Start Home-Based Programs: How Do Home Visitors Do This?

PubMed

Shanti, Caroline

2017-01-01

Parental engagement is considered elemental to successful outcomes for parents and their children in early childhood home visiting programs. Engagement is that piece of parental involvement that refers to the working relationship between the parent and the home visitor. Multiple papers have called for research to pinpoint the ways in which home visitors work with parents to form these working relationships, and form partnerships to achieve positive outcomes. Analysis revealed that in individualizing their efforts to each family, home visitors follow semi-sequential steps in implementing engagement. This article presents a model of the process home visitors describe that resulted from analysis. Grounded theory techniques were used to analyze 29 interviews with Early Head Start (EHS) home visitors and 11 supervisors across four EHS programs in one region of the United States. The process of engagement as described emerges in three phases: (1) learning the parent's culture and style; (2) deepening the working partnership; and (3) balancing the ongoing work. Analysis further revealed specific strategies and goals that guide the work of home visitors in each of these three phases. This not only adds rich detail to the literature, but also provides a useful guide for programs and policy makers through identifying the areas where training and support will increase home visitor ability to engage parents.

Elements of museum mobile augmented reality for engaging hearing impaired visitors

NASA Astrophysics Data System (ADS)

Baker, Esraa Jaffar; Bakar, Juliana Aida Abu; Zulkifli, Abdul Nasir

2017-10-01

Nowadays, designers are more concern with the issue of engagement and informal learning at museum and gallery sites. This has made studies to focus more on the use of Mobile Augmented Reality (MAR) at museum and gallery sites. However, most of the MAR applications for museum visitors are largely tailored to normal hearing visitors while the hearing-impaired (HI) visitors are not supported. The hearing impaired (HI) community account for over 5% of the world's populace which is about 360 million people. Thus, this paper explores the design elements of mobile augmented reality for engaging hearing impaired visitors at the museum site. The findings of this paper argues that there are eleven major elements of engagement of MAR needed for the design of an efficient museum MAR app for hearing impaired visitors. These eleven elements include Aesthetics, Curiosity, Usability, Interaction, Motivation, Satisfaction, Self-Efficacy, Perceived Control, Enjoyment, Focused Attention and Interest. This study pointed out that for an efficient and engaged MAR app for the HI community especially HI visitors to museum sites, these eleven elements are critical. This finding will help MAR designers and developers on how to design an efficient and engaged MAR app for the HI community at large and museum HI visitors specifically.

32 CFR 553.22 - Visitors' rules for the Arlington National Cemetery.

Code of Federal Regulations, 2010 CFR

2010-07-01

... General, U.S. Army Military District of Washington or his representative. (d) Visitors hours. Visitors... through March—8 a.m. through 5 p.m. April through September—8 a.m. through 7 p.m. No visitor shall enter... Superintendent. An individual visiting a relative's gravesite may be issued a temporary pass by the...

Designing a sampling system for concurrently measuring outdoor recreation visitation and describing visitor characteristics

Treesearch

Donald B.K. English; Stanley J. Zarnoch; Susan M. Kocis

2004-01-01

Two primary information needs for managing recreation areas and the visitors to those areas are: (1) good estimates of visitation volume, and (2) accurate descriptions of visitor characteristics, such as length of stay, frequency of visit, and primary activity. For National Forests in the United States of America with large undeveloped areas, efficient sampling for the...

77 FR 9698 - Notice of Continuation of Visitor Services

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-17

...Pursuant to the terms of existing concession contracts, the National Park Service hereby gives notice that it has continued visitor services for a period not-to-exceed 1 year from the date of contract expiration with respect to the listed contracts.

What's a Weed? Knowledge, Attitude and Behaviour of Park Visitors about Weeds.

PubMed

Ansong, Michael; Pickering, Catherine

2015-01-01

Weeds are a major threat to biodiversity globally degrading natural areas of high conservation value. But what are our attitudes about weeds and their management including weeds in national parks? Do we know what a weed is? Do we consider weeds a problem? Do we support their management? Are we unintentionally spreading weeds in parks? To answer these questions, we surveyed visitors entering a large popular national park near the city of Brisbane, Australia. Park visitors were knowledgeable about weeds; with >75% correctly defining weeds as 'plants that grow where they are not wanted'. About 10% of the visitors, however, provided their own sophisticated definitions. This capacity to define weeds did not vary with people's age, sex or level of education. We constructed a scale measuring visitors' overall concern about weeds in parks using the responses to ten Likert scale statements. Over 85% of visitors were concerned about weeds with older visitors, hikers, and those who could correctly define weeds more concerned than their counterparts. The majority think visitors unintentionally introduce seeds into parks, with many (63%) having found seeds on their own clothing. However, over a third disposed of these seeds in ways that could facilitate weed spread. Therefore, although most visitors were knowledgeable and concerned about weeds, and support their control, there is a clear need for more effective communication regarding the risk of visitors unintentionally dispersing weed seeds in parks.

Working in partnership: the application of shared decision-making to health visitor practice.

PubMed

Astbury, Ruth; Shepherd, Ashley; Cheyne, Helen

2017-01-01

To explore the processes that support shared decision-making when health visitors and parents are creating plans to improve the well-being of babies and children. Worldwide, there is a focus on promoting children's well-being to enhance the population health. Within the United Kingdom, health visitors have a key responsibility for working in partnership with parents to support this agenda. Despite evidence that the application of 'shared decision-making' frameworks can increase patient participation, improve patient satisfaction and improve health outcomes, there is limited research linking shared decision-making with health visitor practice. A qualitative, descriptive study. The study was undertaken in two phases: in Phase 1, data were collected by audio recording two health visitor-parent decision-making conversations, in the absence of the researcher, where decisions around planning for a baby or child were being made as part of usual care, and then the participants' experiences were sought through individual questionnaires. In Phase 2, semistructured interviews were conducted with nine health visitors and nine parents in relation to their recent experiences of planning care. Evidence of supportive processes included having a shared understanding around the issue needing to be addressed; being able to identify interventions that were accessible for the family; engaging in decision-making through deep, meaningful conversations using sensitive and responsive approaches; and establishing positive relationships between health visitors and parents, significant others within the family and other professionals. Despite evidence of strong, trusting relationships between parents and health visitors, there were times when shared decision-making was unable to take place due to the absence of supportive processes. Health visitors are aware that planning interventions with parents can be complex. These findings indicate the value of using a shared decision-making framework

Negligence in Visitor Security.

ERIC Educational Resources Information Center

Dwyer, William O.; Murrell, Dan S.

1985-01-01

The park administrator's responsibility in providing security for park visitors through prevention strategies and law enforcement is discussed. Types of negligence are indicated, practice recommendations are made, and evaluative criteria for personnel selection and training are offered. Reference is made to the General Accounting Office Report and…

Joint Chiefs of Staff > Directorates > J1 | Manpower and Personnel

Science.gov Websites

Management J1 | Manpower and Personnel J2 | Joint Staff Intelligence J3 | Operations J4 | Logistics► J8 | Force Structure, Resources & Assessment Contact J1 Manpower and Personnel Home : Directorates : J1 | Manpower and Personnel Mission To provide the Chairman of the Joint Chiefs of Staff

Visitor center flight room, detail of twin structural piers at ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Visitor center flight room, detail of twin structural piers at northeast corner supporting flight room dome - Wright Brothers National Memorial Visitor Center, Highway 158, Kill Devil Hills, Dare County, NC

Fire Island National Seashore survey of walk-in visitors

DOT National Transportation Integrated Search

2005-04-30

The FINS Survey of Walk-in Visitors was conducted with the aim of determining how public access to the island can be improved. This survey obtained input from visitors who access the National Seashore on foot from nearby Robert Moses State Park on th...

Can persuasive and demonstrative messages to visitors reduce littering in river beaches?

PubMed

Cingolani, Ana M; Barberá, Iván; Renison, Daniel; Barri, Fernando R

2016-12-01

Littering of public areas is a significant problem worldwide. Here we evaluate the success of persuasive and demonstrative messages at reducing littering in highly visited river beaches in Argentina. We made an intervention at the beaches which consisted of a personalized verbal request asking visitors to take their litter to the waste cans (persuasive message) while they were exposed to the example of picking up the litter already left on the beach (demonstrative message). We conducted 102 observations distributed over 29 dates, two years and four beaches. Each observation consisted of three or four rounds: before the presence of visitors we cleaned the beaches, during the stay of visitors we made the intervention (once or twice) in two out of the four beaches, and early next morning we estimated the amount of litter left per beach. Litter weight ranged from 0 to 53gvisitor -1 day -1 . Littering per visitor was reduced an average of 35% due to the intervention (p=0.049). We also found differences among beaches (p=0.001), and an increase in littering with crowding (p=0.005). We show for the first time that the personalized request combined with the example of picking up litter is effective in reducing littering in a Latin American country. Copyright © 2016. Published by Elsevier Ltd.

Park signs and visitor behavior: A research summary

Treesearch

P.L. Winter

2008-01-01

National park staffs rely on sign to inform visitors of a great variety of expected behaviors. Where park rangers or volunteers physically cannot be present to remind visitors of important rules, signs can be especially helpful. However, as any ranger will attest, signs vary in eff ectiveness. The reasons for this are numerous, but message content is a critical factor...

Carrying capacity & visitor experience: Cape Hatteras National Seashore

Treesearch

Jason A. Strother; Hans Vogelsong

2003-01-01

The number of people living the United States is expected to increase by 63 million by the year 2025, bringing the total population to over 300 million. As population size increases, recreation and park managers can expect to experience an increase in the number of visitors/users. In 2000, the National Park Service recorded nearly 300 million visitors throughout the...

33. View of footbridge near visitor's center, looking from the ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

33. View of footbridge near visitor's center, looking from the northeast (duplicate of HALS no. LA-1-4 (CT)) - Briarwood: The Caroline Dormon Nature Preserve, 216 Caroline Dormon Road, Saline, Bienville Parish, LA

Protecting children: intuition and awareness in the work of health visitors.

PubMed

Ling, M S; Luker, K A

2000-09-01

Protecting children: intuition and awareness in the work of health visitors This paper is based upon an ethnographic study of a group of health visitors engaged in child protection work. The purpose of this paper is to explore the meanings individual health visitors attach to events concerned with identifying children who may be at risk of harm from child abuse, and also the idiosyncratic nature of health visiting in this complex but everyday social situation. The paper focuses on understanding the importance of a particular form of knowledge which the health visitors referred to as 'intuitive awareness'.

Identification of New World Quails Susceptible to Infection with Avian Leukosis Virus Subgroup J

PubMed Central

Plachý, Jiří; Reinišová, Markéta; Kučerová, Dana; Šenigl, Filip; Stepanets, Volodymyr; Hron, Tomáš; Trejbalová, Kateřina; Elleder, Daniel

2016-01-01

ABSTRACT The J subgroup of avian leukosis virus (ALV-J) infects domestic chickens, jungle fowl, and turkeys. This virus enters the host cell through a receptor encoded by the tvj locus and identified as Na+/H+ exchanger 1. The resistance to avian leukosis virus subgroup J in a great majority of galliform species has been explained by deletions or substitutions of the critical tryptophan 38 in the first extracellular loop of Na+/H+ exchanger 1. Because there are concerns of transspecies virus transmission, we studied natural polymorphisms and susceptibility/resistance in wild galliforms and found the presence of tryptophan 38 in four species of New World quails. The embryo fibroblasts of New World quails are susceptible to infection with avian leukosis virus subgroup J, and the cloned Na+/H+ exchanger 1 confers susceptibility on the otherwise resistant host. New World quails are also susceptible to new avian leukosis virus subgroup J variants but resistant to subgroups A and B and weakly susceptible to subgroups C and D of avian sarcoma/leukosis virus due to obvious defects of the respective receptors. Our results suggest that the avian leukosis virus subgroup J could be transmitted to New World quails and establish a natural reservoir of circulating virus with a potential for further evolution. IMPORTANCE Since its spread in broiler chickens in China and Southeast Asia in 2000, ALV-J remains a major enzootic challenge for the poultry industry. Although the virus diversifies rapidly in the poultry, its spillover and circulation in wild bird species has been prevented by the resistance of most species to ALV-J. It is, nevertheless, important to understand the evolution of the virus and its potential host range in wild birds. Because resistance to avian retroviruses is due particularly to receptor incompatibility, we studied Na+/H+ exchanger 1, the receptor for ALV-J. In New World quails, we found a receptor compatible with virus entry, and we confirmed the

Identification of New World Quails Susceptible to Infection with Avian Leukosis Virus Subgroup J.

PubMed

Plachý, Jiří; Reinišová, Markéta; Kučerová, Dana; Šenigl, Filip; Stepanets, Volodymyr; Hron, Tomáš; Trejbalová, Kateřina; Elleder, Daniel; Hejnar, Jiří

2017-02-01

The J subgroup of avian leukosis virus (ALV-J) infects domestic chickens, jungle fowl, and turkeys. This virus enters the host cell through a receptor encoded by the tvj locus and identified as Na + /H + exchanger 1. The resistance to avian leukosis virus subgroup J in a great majority of galliform species has been explained by deletions or substitutions of the critical tryptophan 38 in the first extracellular loop of Na + /H + exchanger 1. Because there are concerns of transspecies virus transmission, we studied natural polymorphisms and susceptibility/resistance in wild galliforms and found the presence of tryptophan 38 in four species of New World quails. The embryo fibroblasts of New World quails are susceptible to infection with avian leukosis virus subgroup J, and the cloned Na + /H + exchanger 1 confers susceptibility on the otherwise resistant host. New World quails are also susceptible to new avian leukosis virus subgroup J variants but resistant to subgroups A and B and weakly susceptible to subgroups C and D of avian sarcoma/leukosis virus due to obvious defects of the respective receptors. Our results suggest that the avian leukosis virus subgroup J could be transmitted to New World quails and establish a natural reservoir of circulating virus with a potential for further evolution. Since its spread in broiler chickens in China and Southeast Asia in 2000, ALV-J remains a major enzootic challenge for the poultry industry. Although the virus diversifies rapidly in the poultry, its spillover and circulation in wild bird species has been prevented by the resistance of most species to ALV-J. It is, nevertheless, important to understand the evolution of the virus and its potential host range in wild birds. Because resistance to avian retroviruses is due particularly to receptor incompatibility, we studied Na + /H + exchanger 1, the receptor for ALV-J. In New World quails, we found a receptor compatible with virus entry, and we confirmed the susceptibilities

26 CFR 1.1031(k)-1 - Treatment of deferred exchanges.

Code of Federal Regulations, 2012 CFR

2012-04-01

... 26 Internal Revenue 11 2012-04-01 2012-04-01 false Treatment of deferred exchanges. 1.1031(k)-1 Section 1.1031(k)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES (CONTINUED) Common Nontaxable Exchanges § 1.1031(k)-1 Treatment of...

26 CFR 1.1031(k)-1 - Treatment of deferred exchanges.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 26 Internal Revenue 11 2011-04-01 2011-04-01 false Treatment of deferred exchanges. 1.1031(k)-1 Section 1.1031(k)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES (CONTINUED) Common Nontaxable Exchanges § 1.1031(k)-1 Treatment of...

26 CFR 1.1031(k)-1 - Treatment of deferred exchanges.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 26 Internal Revenue 11 2013-04-01 2013-04-01 false Treatment of deferred exchanges. 1.1031(k)-1 Section 1.1031(k)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES (CONTINUED) Common Nontaxable Exchanges § 1.1031(k)-1 Treatment of...

26 CFR 1.1031(k)-1 - Treatment of deferred exchanges.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 26 Internal Revenue 11 2010-04-01 2010-04-01 true Treatment of deferred exchanges. 1.1031(k)-1 Section 1.1031(k)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES Common Nontaxable Exchanges § 1.1031(k)-1 Treatment of deferred...

26 CFR 1.1031(k)-1 - Treatment of deferred exchanges.

Code of Federal Regulations, 2014 CFR

2014-04-01

... 26 Internal Revenue 11 2014-04-01 2014-04-01 false Treatment of deferred exchanges. 1.1031(k)-1 Section 1.1031(k)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES (CONTINUED) Common Nontaxable Exchanges § 1.1031(k)-1 Treatment of...

Spin-flop coupling and exchange anisotropy in ferromagnetic/antiferromagnetic bilayers

NASA Astrophysics Data System (ADS)

Xu, Xiao-Yong; Hu, Jing-Guo

2009-03-01

By investigating the antiferromagnetic spin configuration, the exchange anisotropy and the interfacial spin-flop coupling in ferromagnetic/antiferromagnetic (FM/AF) bilayers have been discussed in detail. The results show that there are four possible cases for the AF spins, namely the reversible recovering case, irreversible half-rotating case, irreversible reversing and irreversible half-reversing cases. Moreover, the realization of the cases strongly depends on interface quadratic coupling, interface spin-flop (biquadratic) coupling and AF thickness. The magnetic phase diagram in terms of the AF thickness tAF, the interfacial bilinear coupling J1 and the spin-flop coupling J2 has been constructed. The corresponding critical parameters in which the exchange bias will occur or approach saturation have been also presented. Specially, the small spin-flop exchange coupling may result in an exchange bias without the interfacial bilinear exchange coupling. However, in general, the spin-flop exchange coupling can weaken or eliminate the exchange bias, but always enhances the coercivity greatly.

Evaluating Education and Science in the KSC Visitor Complex Exhibits

NASA Technical Reports Server (NTRS)

Erickson, Lance K.

2000-01-01

The continuing development of exhibits at the Kennedy Space Center's Visitor Complex is an excellent opportunity for NASA personnel to promote science and provide insight into NASA programs and projects for the approximately 3 million visitors that come to KSC annually. Stated goals for the Visitor Complex, in fact, emphasize science awareness and recommend broadening the appeal of the displays and exhibits for all age groups. To this end, this summer project seeks to evaluate the science content of planned exhibits/displays in relation to these developing opportunities and identify specific areas for enhancement of existing or planned exhibits and displays. To help expand the educational and science content within the developing exhibits at the Visitor Complex, this project was structured to implement the goals of the Visitor Center Director. To accomplish this, the exhibits and displays planned for completion within the year underwent review and evaluation for science content and educational direction. Planning emphasis for the individual displays was directed at combining the elements of effective education with fundamental scientific integrity, within an appealing format.

An hourly variation in zoo visitor interest: measurement and significance for animal welfare research.

PubMed

Davey, Gareth

2006-01-01

A methodological difficulty facing welfare research on nonhuman animals in the zoo is the large number of uncontrolled variables due to variation within and between study sites. Zoo visitors act as uncontrolled variables, with number, density, size, and behavior constantly changing. This is worrisome because previous research linked visitor variables to animal behavioral changes indicative of stress. There are implications for research design: Studies not accounting for visitors' effect on animal welfare risk confounding (visitor) variables distorting their findings. Zoos need methods to measure and minimize effects of visitor behavior and to ensure that there are no hidden variables in research models. This article identifies a previously unreported variable--hourly variation (decrease) in visitor interest--that may impinge on animal welfare and validates a methodology for measuring it. That visitor interest wanes across the course of the day has important implications for animal welfare management; visitor effects on animal welfare are likely to occur, or intensify, during the morning or in earlier visits when visitor interest is greatest. This article discusses this issue and possible solutions to reduce visitor effects on animal well-being.

Visitor center museum display, detail of diorama booth with raised ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Visitor center museum display, detail of diorama booth with raised step; door to electrical door panel at left - Wright Brothers National Memorial Visitor Center, Highway 158, Kill Devil Hills, Dare County, NC

75 FR 44276 - National Fire Academy Board of Visitors

Federal Register 2010, 2011, 2012, 2013, 2014

2010-07-28

...] National Fire Academy Board of Visitors AGENCY: Federal Emergency Management Agency, DHS. ACTION: Notice of cancellation of meeting. SUMMARY: The National Fire Academy Board of Visitors public teleconference meeting... in the Federal Register on July 9, 2010 (75 FR 39561) announcing a National Fire Academy Board of...

76 FR 17425 - National Fire Academy Board of Visitors

Federal Register 2010, 2011, 2012, 2013, 2014

2011-03-29

...] National Fire Academy Board of Visitors AGENCY: Federal Emergency Management Agency, DHS. ACTION: Committee Management; Notice of Open Federal Advisory Committee Meeting. SUMMARY: The National Fire Academy Board of... background documents or comments received by the National Fire Academy Board of Visitors, go to http://www...

76 FR 20696 - National Fire Academy Board of Visitors

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-13

...] National Fire Academy Board of Visitors AGENCY: Federal Emergency Management Agency, DHS. ACTION: Committee... Emergency Management Agency (FEMA) announced in the Federal Register at 76 FR 17425 that the National Fire... supplements that original meeting notice. DATES: The National Fire Academy Board of Visitors meeting was held...

The effect of use density and length of stay on visitor experience in wilderness

Treesearch

David N. Cole; Troy E. Hall

2012-01-01

We assessed the degree to which visitor experiences vary between (1) very high use and moderate use places and (2) day users and overnight users. The study was conducted at 10 trailheads in the Alpine Lakes Wilderness, WA, and the Three Sisters Wilderness, OR. Some visitors were asked about trip motivations as they started their trip; others were asked what they...

Dengue Risk among Visitors to Hawaii during an Outbreak

PubMed Central

Smith, Carrie E.; Tom, Tammy; Sasaki, Jed; Ayers, Tracy

2005-01-01

Despite the high rates of dengue in many tropical destinations frequented by tourists, limited information is available on the risk for infection among short-term visitors. We retrospectively surveyed 4,000 persons who arrived in Hawaii during the peak of the 2001–2002 dengue outbreak and collected follow-up serologic test results for those reporting denguelike illness. Of 3,064 visitors who responded, 94 (3%) experienced a denguelike illness either during their trip or within 14 days of departure; 34 of these persons were seen by a physician, and 2 were hospitalized. Twenty-seven visitors with denguelike illness provided a serum specimen; all specimens were negative for anti-dengue immunoglobulin G antibodies. The point estimate of dengue incidence was zero infections per 358 person-days of exposure with an upper 95% confidence limit of 3.0 cases per person-year. Thus, the risk for dengue infection for visitors to Hawaii during the outbreak was low. PMID:15890133

Overseas visitors admitted to Queensland hospitals for water-related injuries.

PubMed

Wilks, J; Coory, M

2000-09-01

To determine the number of overseas visitors admitted to Queensland hospitals for water-related injuries over three years, the causes of their injuries, the resulting conditions treated, and the type of hospitals to which they were admitted. Retrospective analysis of admissions of overseas visitors to Queensland hospitals over the three financial years 1995/96, 1996/97 and 1997/98. 296 overseas visitors admitted for water-related injuries, identified from hospital records by their usual place of residence. Number of admissions, causes of injuries, conditions treated, and bed days occupied by these patients at different types of hospitals (metropolitan, regional and rural public hospitals, and private hospitals). The 296 overseas visitors accounted for a total of 596 separate admissions, many of these the result of patients with decompression illness being admitted several times to a regional hospital hyperbaric chamber for treatment as day patients. The largest number of injuries involved the use of diving equipment. The main conditions treated were decompression illness (54.7%), fractures and dislocations (15.5%), and drowning and non-fatal submersion (14.9%). Overall, overseas visitors admitted to hospital following a water-related incident occupied 1215 bed days; 90% of these admissions were to regional hospitals. The main reason for admission of overseas visitors is for decompression illness, suggesting that the prevention of injuries among scuba divers requires further coordinated efforts by health and tourism authorities.

Affects of road sign wording on visitor survey - non-response bias

Treesearch

Susan M. Kocis; Stanley J. Zarnoch; Donald B.K. English

2004-01-01

On-site visitor interviewer data collection is a key component of the USDA Forest Service National Visitor Use Monitoring (NVUM) program. In many areas, especially higher speed roads and roads with non-recreation traffic, many vehicles may not stop for an interview. Wording on the sign may condition non-recreation visitors to self-select as to whether or not they...

Serving culturally diverse visitors to forests in California: a resource guide

Treesearch

Nina S. Roberts; Deborah J. Chavez; Benjamin M. Lara; Emilyn A. Sheffield

2009-01-01

The national forests of California are experiencing an increase in new visitors yet, in some areas, a continued lack of ethnic diversity persists. In addition, changing demographics has led to a need for keeping up with trends while also being aware of constraints to visitor use. Knowing how to serve culturally diverse visitors in ways that are innovative and inclusive...

Baby walkers--health visitors' current practice, attitudes and knowledge.

PubMed

Kendrick, Denise; Illingworth, Rachel; Hapgood, Rhydian; Woods, Amanda J; Collier, Jacqueline

2003-09-01

Baby walkers are a commonly used item of nursery equipment. Between 12% and 50% of parents whose infant uses a walker report that their child has suffered a walker-related injury. Health visitors' knowledge, attitudes and practice with regard to walkers and related health education has not been explored so far. The aim of the study was to describe health visitors' knowledge of walkers and walker-related injuries, their attitudes towards walkers and current practice with regard to walker health education, and to examine the relationship between knowledge and attitudes and knowledge and practice. A survey was carried out with 64 health visitors prior to participation in a randomized controlled trial assessing the effectiveness of an educational package in reducing baby walker use. The response rate was 95%. Half of the health visitors always discussed walkers postnatally, most frequently at the 6-9 month check. Most did not usually discuss the frequency of walker-related injuries. Most had negative attitudes towards walkers, but believed that parents hold positive attitudes to them and that it is hard to persuade parents not to use them. Health visitors had a limited knowledge of walker use and walker-related injuries. Those giving advice on walkers most often had higher knowledge scores than those giving advice less often (P = 0.03). Those with higher knowledge scores held more negative attitudes towards walkers (rs = 0.29, P = 0.023) and believed parents to have more positive attitudes towards walkers (rs = -0.49, P < 0.001). Few health visitors had resources to discuss walkers. Health visitor advice regarding walkers needs to be given earlier in the postnatal period than is currently common practice, and they need more knowledge about walker use and related injuries. Education about baby walkers needs to be incorporated into undergraduate and in-service education, which may need to include the development of skills in exploring reasons why parents use walkers and

Visitor perceptions and the shifting social carrying capacity of South Sinai's coral reefs.

PubMed

Leujak, Wera; Ormond, Rupert F G

2007-04-01

To investigate how the perceptions and behaviour of visitors to coral reefs are influenced by their prior experience and knowledge of marine life, a questionnaire-based study was undertaken at sites in the Ras Mohammed National Park and at Sharm El Sheikh, South Sinai, Egypt. It was evident that over the 10-20 years during which these reefs have deteriorated (mainly due to reef-flat trampling), there have been interrelated shifts in the nature of visitors making use of them. First, there has been a shift from experienced divers and snorkellers to inexperienced snorkellers and non-snorkellers with a poorer knowledge of reef biology. Second, there has been a shift in the predominant nationalities of visitors, from German and British, through Italian, to Russian. More recent user groups both stated and showed that they had less experience of snorkelling; they also showed less knowledge of marine life and less interest in learning about it. Visitor perceptions of both the state of the marine life on the reefs and the acceptability of current visitor numbers also varied between groups. More recent visitor groups and visitors with less knowledge were more satisfied with reef health. In general, however, visitor perceptions of reef health did not correlate well with actual reef conditions, probably because more experienced visitors preferred less impacted sites with which they were nevertheless less satisfied than inexperienced visitors at heavily impacted sites. More recent visitor groups were also less bothered by crowding on the shore or in the water. Consequently, the apparent "social carrying capacity" of sites seems to be increasing to a level well above the likely "ecological carrying capacity".

Visitor Perceptions and the Shifting Social Carrying Capacity of South Sinai's Coral Reefs

NASA Astrophysics Data System (ADS)

Leujak, Wera; Ormond, Rupert F. G.

2007-04-01

To investigate how the perceptions and behaviour of visitors to coral reefs are influenced by their prior experience and knowledge of marine life, a questionnaire-based study was undertaken at sites in the Ras Mohammed National Park and at Sharm El Sheikh, South Sinai, Egypt. It was evident that over the 10-20 years during which these reefs have deteriorated (mainly due to reef-flat trampling), there have been interrelated shifts in the nature of visitors making use of them. First, there has been a shift from experienced divers and snorkellers to inexperienced snorkellers and non-snorkellers with a poorer knowledge of reef biology. Second, there has been a shift in the predominant nationalities of visitors, from German and British, through Italian, to Russian. More recent user groups both stated and showed that they had less experience of snorkelling; they also showed less knowledge of marine life and less interest in learning about it. Visitor perceptions of both the state of the marine life on the reefs and the acceptability of current visitor numbers also varied between groups. More recent visitor groups and visitors with less knowledge were more satisfied with reef health. In general, however, visitor perceptions of reef health did not correlate well with actual reef conditions, probably because more experienced visitors preferred less impacted sites with which they were nevertheless less satisfied than inexperienced visitors at heavily impacted sites. More recent visitor groups were also less bothered by crowding on the shore or in the water. Consequently, the apparent “social carrying capacity” of sites seems to be increasing to a level well above the likely “ecological carrying capacity”.

Visitor spending effects: assessing and showcasing America's investment in national parks

USGS Publications Warehouse

Koontz, Lynne; Cullinane Thomas, Catherine; Ziesler, Pamela; Olson, Jeffrey; Meldrum, Bret

2017-01-01

This paper provides an overview of the evolution, future, and global applicability of the U.S. National Park Service's (NPS) visitor spending effects framework and discusses the methods used to effectively communicate the economic return on investment in America's national parks. The 417 parks represent many of America's most iconic destinations: in 2016, they received a record 331 million visits. Competing federal budgetary demands necessitate that, in addition to meeting their mission to preserve unimpaired natural and cultural resources for the enjoyment of the people, parks also assess and showcase their contributions to the economic vitality of their regions and the nation. Key approaches explained include the original Money Generation Model (MGM) from 1990, MGM2 used from 2001, and the visitor spending effects model which replaced MGM2 in 2012. Detailed discussion explains the NPS's visitor use statistics system, the formal program for collecting, compiling, and reporting visitor use data. The NPS is now establishing a formal socioeconomic monitoring (SEM) program to provide a standard visitor survey instrument and a long-term, systematic sampling design for in-park visitor surveys. The pilot SEM survey is discussed, along with the need for international standardization of research methods.

Exploring visitor acceptability for hardening trails to sustain visitation and minimize impacts

USGS Publications Warehouse

Cahill, K.L.; Marion, J.L.; Lawson, S.R.

2008-01-01

Protected natural area managers are challenged to provide high quality recreation opportunities and ensure the protection of resources from impacts associated with visitation. Development of visitor use facilities and application of site hardening practices are commonly applied tools for achieving these competing management objectives. This study applies stated choice analysis to examine visitor opinions on acceptability when they are asked to make tradeoffs among competing social, resource and management attributes in backcountry and frontcountry settings of Acadia National Park. This study demonstrates that asking visitors about recreation setting attributes uni-dimensionally, a common approach, can yield less informative responses. Analyses that considered direct tradeoffs revealed more divergent opinions on acceptability for setting attributes than a unidimensional approach. Findings revealed that visitors to an accessible and popular attraction feature supported trail development options to protect resource conditions with unrestricted visitor access. In contrast, visitors to a remote undeveloped island expressed stronger support for no or limited trail development and access restrictions to protect resource conditions.

Evaluation and development of a university visitor parking management framework.

DOT National Transportation Integrated Search

2010-05-01

Visitors constitute an important component of a university business. Given that visitors are typically unfamiliar with university : campus layouts, special assistance may be needed to assist them with their parking needs. For example, personal and : ...

Teenagers and Their Babies: A Perinatal Home Visitor's Guide

ERIC Educational Resources Information Center

Cardone, Ida; Gilkerson, Linda; Wechsler, Nick

2008-01-01

"Teenagers and Their Babies" is a self-study and preparation guide for paraprofessional home-based visitors to engage expectant and new parents in an exploration of their baby's development and their expectations for parenthood. The guide includes service interventions--strategies, techniques, and activities--for home visitors and doulas to use…

76 FR 6149 - National Fire Academy Board of Visitors; Notice of Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-03

...] National Fire Academy Board of Visitors; Notice of Meeting AGENCY: Federal Emergency Management Agency, DHS... Fire Academy Board of Visitors will meet on February 22, 2011. DATES: The teleconference will take... or comments received by the National Fire Academy Board of Visitors, go to http://www.regulations.gov...

Learning practice: a new model of health visitor intervention to drive outcomes.

PubMed

Ebeid, Ann

2012-03-01

Although there is a body of literature related to how hospital nurses develop skill, judgement or expertise there is little empirical work that focuses on understanding and developing health visiting expertise. The aims of this paper are: to identify a typology of health visitor skills, knowledge and cognition in use and the nature of health visitor expertise; to present an expert model of practice as a practice learning tool; to locate this model in context of my 2007 empirical research. This explored the problems of families and children in need and how they were supported by health visitors. This new practice model is timely in view of the need to train more health visitors, educators and practice facilitators as set out in the Health Visitor Implementation Plan.

Visitor Access and Transportation Guide.

DOT National Transportation Integrated Search

2011-09-30

This visitor access and transportation guide presents opportunities to manage or improve circulation and travel patterns in areas managed by Federal Land Management Agencies (FLMAs), such as the National Park Service (NPS), U.S. Forest Service (USFS)...

What blocks health visitors from taking on a leadership role?

PubMed

Hyett, Erika

2003-07-01

Current government documents in the United Kingdom call for all nurses to take on a greater leadership role. This paper critically considers some of the management factors that block one group of specialist nurses (health visitors) from fulfilling their leadership role. Health visitors have a key role to play in meeting the public health targets of local primary care trusts, known as local health improvement plans. But to take on a greater public health role, health visitors need to move away from working independently within separate general practitioner surgeries and to work in teams which share the vision and goals of the primary care trusts. The paper explores different styles of management that promote transformational leadership and relate to practice. It is suggested that use of the Servant-Leader model of management should encourage the empowerment of staff, and through empowerment health visitors should be able to instigate change and become more innovative in their practice. Persistent recruitment and retention problems have resulted in little time being available to focus on the effectiveness of services. The future management of health visitors will be to primarily run the service while supporting staff in accessing and influencing those in power.

In situ spectroscopic characterization of a solution-phase X-type ligand exchange at colloidal lead sulphide quantum dot surfaces

DOE PAGES

Kroupa, Daniel M.; Anderson, Nicholas C.; Castaneda, Chloe V.; ...

2016-11-07

Here, we employed quantitative NMR spectroscopy and spectrophotometric absorbance titration to study a quantum dot X-type ligand exchange reaction. We find that the exchange is highly cooperative, where at low extents of exchange the change in free energy of the reaction, Δ G XC, is ~11 kJ mol –1 while at higher extents of exchange Δ G XC saturates to ~–4 kJ mol –1. A modified Fowler binding isotherm is developed to describe the reaction.

A Recreational Visitor Travel Simulation Model as an Aid to Management Planning

ERIC Educational Resources Information Center

Lucas, Robert C.; Shechter, Mordechai

1977-01-01

The article describes the use of a simulation for outdoor recreation management which is applicable for any type of dispersed recreation area where visitor flows are of concern, where there are capacity constraints, where visitor encounters are significant, and where it is desired to allow visitors substantial freedom to move about flexibly. (MJB)

Strong Ferromagnetic Exchange Coupling Mediated by a Bridging Tetrazine Radical in a Dinuclear Nickel Complex.

PubMed

Woods, Toby J; Stout, Heather D; Dolinar, Brian S; Vignesh, Kuduva R; Ballesteros-Rivas, Maria F; Achim, Catalina; Dunbar, Kim R

2017-10-16

The radical bridged compound [(Ni(TPMA)) 2 -μ-bmtz •- ](BF 4 ) 3 ·3CH 3 CN (bmtz = 3,6-bis(2'-pyrimidyl)-1,2,4,5-tetrazine, TPMA = tris(2-pyridylmethyl)amine) exhibits strong ferromagnetic exchange between the S = 1 Ni II centers and the bridging S = 1/2 bmtz radical with J = 96 ± 5 cm -1 (-2J Ni-rad S Ni S rad ). DFT calculations support the existence of strong ferromagnetic exchange.

Managing coastal recreation impacts and visitor experience using GIS

Treesearch

Anna M. T. Gajda; Judson Brown; Grant Peregoodoff; Patrick Bartier

2000-01-01

A campsite monitoring program was initiated in Gwaii Haanas National Park Reserve/Haida Heritage Site to determine baseline levels of visitor impacts. These data were necessary to evaluate visitor management strategies and to act as reference points to measure changes in impacts over time. Using GIS, survey data were integrated with an ecological land classification,...

75 FR 34440 - Air University Board of Visitors Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-17

... DEPARTMENT OF DEFENSE Department of the Air Force Air University Board of Visitors Meeting ACTION: Notice of Meeting of the Air University Board of Visitors. SUMMARY: Under the provisions of the Federal... (5 U.S.C. 552b, as amended), and 41 CFR 102-3.150, the Department of Defense announces that the Air...

75 FR 8049 - Air University Board of Visitors Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-23

... DEPARTMENT OF DEFENSE Department of the Air Force Air University Board of Visitors Meeting ACTION: Notice of Meeting of the Air University Board of Visitors. SUMMARY: Under the provisions of the Federal... (5 U.S.C. 552b, as amended), and 41 CFR 102-3.150, the Department of Defense announces that the Air...

77 FR 31338 - Air University Board of Visitors Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-25

... DEPARTMENT OF DEFENSE Department of the Air Force Air University Board of Visitors Meeting ACTION: Notice of Meeting of the Air University Board of Visitors. SUMMARY: Under the provisions of the Federal... (5 U.S.C. 552b, as amended), and 41 CFR 102-3.150, the Department of Defense announces that the Air...

76 FR 57979 - Air University Board of Visitors Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-19

... DEPARTMENT OF DEFENSE Department of the Air Force Air University Board of Visitors Meeting ACTION: Notice of Meeting of the Air University Board of Visitors. SUMMARY: Under the provisions of the Federal... (5 U.S.C. 552b, as amended), and 41 CFR 102-3.150, the Department of Defense announces that the Air...

Atmosphere-ocean gas exchange based on radiocarbon data

NASA Astrophysics Data System (ADS)

Byalko, Alexey

2014-05-01

In recent decades, the intensity of global atmospheric convection has accelerated faster than climate warming; it is possible to judge this process from indirect data. Increasing ocean salinity contrasts provide evidence that evaporation has intensified [1]; sea surface wind velocities and wave heights have increased [2]. The CO2 gas exchange between the atmosphere and ocean must also simultaneously increase. Monthly measurements of atmospheric CO2 concentration have been published since 1958 [3], but directly measuring its fluxes from the atmosphere to the ocean and back is hardly possible. We show they can be reconstructed from 14C isotope concentration data. In the past century, two processes influenced the atmospheric 14C concentration in opposite directions: burning fossil fuels and testing nuclear weapons in the atmosphere. We compare the gas exchange theory with measurements of radiocarbon content in the atmosphere [4—6], which allows assessing the gas exchange quantitatively for the ocean to atmosphere and atmosphere to ocean fluxes separately for period 1960—2010 [7]. References 1. Durack P. J. and Wijffels S. E., J. Climate 23, 4342 (2010). 2. Young I. R., Sieger S., and Babanin A.V., Science 332, 451 (2011). 3. NOAA Earth System Research Laboratory Data: ftp://ftp.cmdl.noaa.gov/ccg/co2/trends/co2_mm_mlo.txt. 4. Nydal R., Lövseth K. // J. Geophys. Res. 1983. V. 88. P. 3579. 5. Levin I., Kromer B. // Radiocarbon. 1997. V. 39. P. 205. 6. Miller J.B., Lehman S.J., Montzka S.A., et al. // J. Geophys. Res. 2012. V. 117. D08302. 7. Byalko A.V. Doklady Physics, 2013. V. 58, 267-271.

Diversity of the Insect Visitors on Calluna vulgaris (Ericaceae) in Southern France Heathlands.

PubMed

Descamps, Charlotte; Moquet, Laura; Migon, Marc; Jacquemart, Anne-Laure

2015-01-01

As part of an ongoing research project on the pollination networks in European heathlands, the objective of this study was to assess the insect visitor guild on Calluna vulgaris (L.) Hull (Ericaceae). We focused the study on a region renowned for its largely well-preserved heathlands, the Cévennes National Park, Southern France. In 2013, flower visitors were observed over 3 d per site, in four heathland sites at mont Lozère. Honeybees (Apis mellifera L.) were the main visitors (62-88% of total visitors). Besides honeybees, a high diversity of visitors was detected with 57 different species identified (42 Diptera and 15 Hymenoptera). Hoverflies (Syrphidae, Diptera) visitors were abundant and diverse, especially individuals belonging to the genera Eristalis and Episyrphus. The reported diversity of visitors was probably due to the preservation of large heathland areas at mont Lozère and to the generalist pollination system of C. vulgaris. © The Author 2015. Published by Oxford University Press on behalf of the Entomological Society of America.

1. Photocopied December 1977, from original in 'Report of J.B.J.,'Vol. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

1. Photocopied December 1977, from original in 'Report of J.B.J.,'Vol. I, Jervis Library. ELEVATION OF SING SING KILL BRIDGE, SHOWING ORIGINAL PLAN FOR AN 80-FOOT ARCH. - Old Croton Aqueduct, Sing Sing Kill Bridge, Spanning Aqueduct Street & Broadway, Ossining, Westchester County, NY

Is Alaska really different? A review of CUSTOMER recreation visitor survey data

Treesearch

Patrick C. Reed

1995-01-01

Many believe that Alaska is unique and that its location, resources, and population influence the use patterns and attitudes of its National Forest recreation visitors so that they seem notably different from visitors to other National Forests outside Alaska. Data from a recreation visitor survey called CUSTOMER were analyzed for the years 1991 to 1993 to identify...

Visitor use patterns and satisfaction along the Rogue-Umpqua Scenic Byway, Oregon

Treesearch

Suresh K. Shrestha; Robert C. Burns; Alan R. Graefe; Kevin R. Gaydos

2009-01-01

Face-to-face interviews were conducted with 232 visitors/groups along Oregon's Rogue-Umpqua Scenic Byway (RUSB) to identify recreation use patterns and assess visitor satisfaction with various attributes of the Byway. Study participants were most likely to be over 50 years old, to be visiting overnight, and to be repeat visitors from Oregon who were there with...

How do visitor density and anthropogenic change in frontcountry wilderness settings affect recreation benefits?

Treesearch

Jeffrey R. Behan; Merton T. Richards; Martha E. Lee

2000-01-01

Effects on recreation benefits were assessed using questionnaires and image sets depicting visitor density ranges and anthropogenic setting changes at two heavily-visited wilderness sites. Visitor benefits were less affected by high visitor densities at the more accessible of the two sites. New age medicine wheels had a positive effect on visitor benefits, as did trail...

Mechanism of interlayer exchange in magnetic multilayers

NASA Astrophysics Data System (ADS)

Slonczewski, J. C.

1993-09-01

The spin-current method is used to calculate the oscillatory exchange energy that couples two semi-infinite ferromagnets with exchange-split parabolic bands which are joined by a nonmagnetic metallic spacer. A closed asymptotic formula extends the previous RKKY-type formula to the case in which the ferromagnets and spacer have different Fermi vectors. The predicted amplitude of oscillatory coupling increases steeply with Fermi vector or electron density in the spacer, as do the experimental trends reported by Parkin. Numerical computations relevant to iron support this closed formula and show that the amplitude of the biquadratic ( J2 cos 2θ) and higher-order corrections to the conventional - J1 cos θ form of energy is less than 2%.

Effects of hemoglobin variants HbJ Bangkok, HbE, HbG Taipei, and HbH on analysis of glycated hemoglobin via ion-exchange high-performance liquid chromatography.

PubMed

Zhang, Xiu-Ming; Wen, Dong-Mei; Xu, Sheng-Nan; Suo, Ming-Huan; Chen, Ya-Qiong

2018-01-01

To explore the effects of HbJ Bangkok, HbE, HbG Taipei, and α-thalassemia HbH on the results of HbA1c assessment using ion-exchange high-performance liquid chromatography (IE-HPLC). We enrolled five patients in which the results of the IE-HPLC HbA1c assay were inconsistent with the average levels of FBG. We performed hemoglobin capillary (Hb) electrophoresis using whole-blood samples. We also sequenced the genes encoding Hb using dideoxy-mediated chain termination and analyzed HbA1c using borate affinity HPLC (BA-HPLC) and turbidimetric inhibition immunoassay (TINIA). Two patients had the HbJ Bangkok variant. Hb genotypes of these patients were β 41-42 /β J Bangkok and β N /β J Bangkok , and the content of HbJ Bangkok was 93.9% and 52.4%, respectively. The remaining three patients had the following: HbE (β N /β E Hb genotype, 23.6% HbE content), HbG Taipei (β N /β G Taipei Hb genotype, 39.4% HbG Taipei content), and α-thalassemia HbH (6.1% HbH content, 2.8% Hb Bart's content). In the patients with β-thalassemia and HbJ Bangkok variants, the presence of the variants interfered with the results of HbA1c analyses using IE-HPLC and TINIA; in the remaining four patients, there was interference with the results of HbA1c IE-HPLC but not with the TINIA assay. There was no interference with BA-HPLC HbA1c results. HbJ Bangkok, HbE, HbG Taipei Hb, and α-thalassemia HbH disease cause varying degrees of interference with the analysis of HbA1c using IE-HPLC. In these patients, we suggest using methods free from such interference for the analysis of HbA1c and other indicators to monitor blood glucose levels. © 2017 Wiley Periodicals, Inc.

Interpretation reduces ecological impacts of visitors to world heritage site.

PubMed

Littlefair, Carolyn; Buckley, Ralf

2008-07-01

Minimal-impact interpretation is widely used to reduce the ecological impacts of visitors to protected areas. We tested whether verbal appeals and/or role-model demonstrations of minimal-impact behavior by a trained guide reduced noise, litter, and trampling impacts on hiking trails in a subtropical rainforest. Interpretation did reduce impacts significantly. Different interpretive techniques were more effective for different impacts. The experimental groups were mature, well-educated professionals; interpretation may differ in effectiveness for different visitors. Interpretation by skilled guides can indeed reduce visitor impacts in protected areas, especially if role modeling is combined with verbal appeals.

Visitor Learning on Guided Tours: An Activity Theory Approach

ERIC Educational Resources Information Center

Robinson, Lily Beatrice

2016-01-01

Guided tours, field trips, and other non-formal learning experiences occur in a variety of settings such as museums, parks, civic buildings, and architectural landmarks for the purpose of educating the public. This study yielded four main findings. (1) Program educational goals were visitor awareness, positive affective experience, and advocacy.…

Responses to olfactory signals reflect network structure of flower-visitor interactions.

PubMed

Junker, Robert R; Höcherl, Nicole; Blüthgen, Nico

2010-07-01

1. Network analyses provide insights into the diversity and complexity of ecological interactions and have motivated conclusions about community stability and co-evolution. However, biological traits and mechanisms such as chemical signals regulating the interactions between individual species--the microstructure of a network--are poorly understood. 2. We linked the responses of receivers (flower visitors) towards signals (flower scent) to the structure of a highly diverse natural flower-insect network. For each interaction, we define link temperature--a newly developed metric--as the deviation of the observed interaction strength from neutrality, assuming that animals randomly interact with flowers. 3. Link temperature was positively correlated to the specific visitors' responses to floral scents, experimentally examined in a mobile olfactometer. Thus, communication between plants and consumers via phytochemical signals reflects a significant part of the microstructure in a complex network. Negative as well as positive responses towards floral scents contributed to these results, where individual experience was important apart from innate behaviour. 4. Our results indicate that: (1) biological mechanisms have a profound impact on the microstructure of complex networks that underlies the outcome of aggregate statistics, and (2) floral scents act as a filter, promoting the visitation of some flower visitors, but also inhibiting the visitation of others.

26 CFR 1.1235-1 - Sale or exchange of patents.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 26 Internal Revenue 11 2013-04-01 2013-04-01 false Sale or exchange of patents. 1.1235-1 Section 1... or exchange of patents. (a) General rule. Section 1235 provides that a transfer (other than by gift, inheritance, or devise) of all substantial rights to a patent, or of an undivided interest in all such rights...

26 CFR 1.1235-1 - Sale or exchange of patents.

Code of Federal Regulations, 2014 CFR

2014-04-01

... 26 Internal Revenue 11 2014-04-01 2014-04-01 false Sale or exchange of patents. 1.1235-1 Section 1... or exchange of patents. (a) General rule. Section 1235 provides that a transfer (other than by gift, inheritance, or devise) of all substantial rights to a patent, or of an undivided interest in all such rights...

26 CFR 1.1235-1 - Sale or exchange of patents.

Code of Federal Regulations, 2012 CFR

2012-04-01

... 26 Internal Revenue 11 2012-04-01 2012-04-01 false Sale or exchange of patents. 1.1235-1 Section 1... or exchange of patents. (a) General rule. Section 1235 provides that a transfer (other than by gift, inheritance, or devise) of all substantial rights to a patent, or of an undivided interest in all such rights...

26 CFR 1.1235-1 - Sale or exchange of patents.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 26 Internal Revenue 11 2011-04-01 2011-04-01 false Sale or exchange of patents. 1.1235-1 Section 1... or exchange of patents. (a) General rule. Section 1235 provides that a transfer (other than by gift, inheritance, or devise) of all substantial rights to a patent, or of an undivided interest in all such rights...

Phase diagram of the frustrated J 1 ‑ J 2 transverse field Ising model on the square lattice

NASA Astrophysics Data System (ADS)

Sadrzadeh, M.; Langari, A.

2018-03-01

We study the zero-temperature phase diagram of transverse field Ising model on the J 1 ‑ J 2 square lattice. In zero magnetic field, the model has a classical Néel phase for J 2/J 1 < 0.5 and an antiferromagnetic collinear phase for J 2/J 1 > 0.5. We incorporate harmonic fluctuations by using linear spin wave theory (LSWT) with single spin flip excitations above a magnetic order background and obtain the phase diagram of the model in this approximation. We find that harmonic quantum fluctuations of LSWT fail to lift the large degeneracy at J 2/J 1 = 0.5 and exhibit some inconsistent regions on the phase diagram. However, we show that anharmonic fluctuations of cluster operator approach (COA) resolve the inconsistency of the LSWT, which reveals a string-valence bond solid ordered phase for the highly frustrated region.

26 CFR 1.989(b)-1 - Definition of weighted average exchange rate.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 26 Internal Revenue 10 2010-04-01 2010-04-01 false Definition of weighted average exchange rate. 1... (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES Export Trade Corporations § 1.989(b)-1 Definition of weighted average exchange rate. For purposes of section 989(b)(3) and (4), the term “weighted average exchange rate...

22 CFR 62.28 - International visitors.

Code of Federal Regulations, 2010 CFR

2010-04-01

... programs are designed to enable the international visitors to better understand American culture and society and contribute to enhanced American knowledge of foreign cultures. The category is for people-to...

NEEDS AND CHALLENGES OF HOME VISITORS CONDUCTING PERINATAL DEPRESSION SCREENING.

PubMed

Doering, Jennifer J; Maletta, Kristyn; Laszewski, Audrey; Wichman, Christina L; Hammel, Jennifer

2017-07-01

This article describes the needs and challenges faced by home visitors, supervisors, and clients when conducting perinatal depression screening. Home visitors (n = 11), supervisors (n = 5), and clients (n = 9) representing rural and urban practice settings in Wisconsin were recruited into three separate focus groups. Themes were identified from the transcribed audio-recorded interviews using content analysis. Results indicate that a trusting relationship was leveraged to facilitate depression screening and referral. Home visitors personalized care to a client's context and to protect confidentiality. Home-visiting practice demanded flexibility and negotiation in decision-making with clients and families. Coordinating access to mental health evaluation in areas of limited access was a common challenge. Participants reported a need for further training on safety management. With adequate training and support, home visitors are well-positioned to promote access to mental health services in vulnerable families to support infant mental health. © 2017 Michigan Association for Infant Mental Health.

Partial dispensability of Djp1's J domain in peroxisomal protein import in Saccharomyces cerevisiae results from genetic redundancy with another class II J protein, Caj1.

PubMed

Dobriyal, Neha; Tripathi, Prerna; Sarkar, Susrita; Tak, Yogesh; Verma, Amit K; Sahi, Chandan

2017-05-01

J proteins are obligate co-chaperones of Hsp70s. Via their signature J domain, all J proteins interact with their partner Hsp70s and stimulate their weak ATPase activity, which is vital for Hsp70 functions. The dependency of J proteins on their J domain is such that mutations in critical amino acids in the J domain often results into a null phenotype for a particular J protein. Here, we show that the J domain of Djp1, a cytosolic J protein important for peroxisomal protein import in Saccharomyces cerevisiae, is partially dispensable. A complete deletion of Djp1 J domain resulted into only partial loss in peroxisomal protein import function. Instead, the C-terminal domain of Djp1 was found to be essential for proper localization of the peroxisomal targeted GFP-PTS1. Furthermore, we show that Caj1, another cytosolic J protein, also has some role in peroxisomal protein import. Caj1 was found to be partially redundant with Djp1 as cells lacking both Djp1 and Caj1 resulted into a much more severe defect in GFP-PTS1 localization. Based on these results, we propose that dispensability of J domains could be attributed to genetic redundancy between different J proteins sharing common structural topology and cellular localization.

Factors associated with patient and visitor violence experienced by nurses in general hospitals in Switzerland: a cross-sectional survey.

PubMed

Hahn, Sabine; Müller, Marianne; Needham, Ian; Dassen, Theo; Kok, Gerjo; Halfens, Ruud J G

2010-12-01

To explore nurses' experiences with patient and visitor violence, as well as other related factors, in Swiss general hospital settings. Patient and visitor violence is a complex occupational hazard among health care professions, with nursing in general, experiencing the highest rate of patient and visitor violence. International research has found that staff and patient attributes, interaction between staff and patients, as well as environmental characteristics are important factors associated with the occurrence of patient and visitor violence. Previous studies, however, have only partially described these factors in the general hospital setting. Mainland European general hospital settings are even less well researched. A retrospective cross-sectional survey was conducted in 2007. A total of 291 nurses working in different clinical departments in general hospitals provided data. The questionnaire used was a modified German version of the Survey of Violence Experienced by Staff. The findings revealed that 72% of nurses had experienced verbal patient and visitor violence and 42% physical patient and visitor violence in the past 12 months. Also, 23% were physically injured and 1.4% took one or more days of sick leave. Patient and visitor violence was distressing for the nursing staff. A higher risk for patient and visitor violence was observed with registered nurses nursing anxious or cognitively impaired patients, for rehabilitation units with longer-term nurse-patient/nurse-relative interactions and for workplaces with an absence of formal procedures for patient and visitor violence. The results indicate that the clinical setting has little impact on the occurrence of patient and visitor violence. Patient and visitor violence appears to be influenced more by the additional factors specific to the type of interaction and situation. Research should follow up on these specific findings to further improve policies, procedures and intervention strategies. To prevent

Visitor evaluations of management actions at a highly impacted Appalachian Trail camping area.

PubMed

Daniels, Melissa L; Marion, Jeffrey L

2006-12-01

Protected area management involves balancing environmental and social objectives. This is particularly difficult at high-use/high-impact recreation sites, because resource protection objectives may require substantial site management or visitor regulation. This study examined visitors' reactions to both of these types of actions at Annapolis Rocks, Maryland, a popular Appalachian Trail camping area. We surveyed visitors before and after implementation of camping policies that included shifting camping to designated newly constructed campsites and prohibiting campfires. Survey results reveal that visitors were more satisfied with all social and environmental indicators after the changes were enacted. An Importance-Performance analysis also determined that management actions improved conditions for factors of greatest concern to campers prior to the changes. Posttreatment visitors were least satisfied with factors related to reduced freedom and to some characteristics of the constructed campsites. Although there was evidence of visitor displacement, the camping changes met management goals by protecting the camping area's natural resources and improving social conditions.

Visitor evaluations of management actions at a highly impacted Appalachian Trail camping area

USGS Publications Warehouse

Daniels, M.L.; Marion, J.L.

2006-01-01

Protected area management involves balancing environmental and social objectives. This is particularly difficult at high-use/high-impact recreation sites, because resource protection objectives may require substantial site management or visitor regulation. This study examined visitors? reactions to both of these types of actions at Annapolis Rocks, Maryland, a popular Appalachian Trail camping area. We surveyed visitors before and after implementation of camping policies that included shifting camping to designated newly constructed campsites and prohibiting campfires. Survey results reveal that visitors were more satisfied with all social and environmental indicators after the changes were enacted. An Importance-Performance analysis also determined that management actions improved conditions for factors of greatest concern to campers prior to the changes. Posttreatment visitors were least satisfied with factors related to reduced freedom and to some characteristics of the constructed campsites. Although there was evidence of visitor displacement, the camping changes met management goals by protecting the camping area?s natural resources and improving social conditions.

Providing Japanese health care information for international visitors: digital animation intervention.

PubMed

Nishikawa, Mariko; Yamanaka, Masaaki; Kiriya, Junko; Jimba, Masamine

2018-05-21

Over 24 million international visitors came to Japan in 2016 and the number is expected to increase. Visitors could be at a risk of illness or injury that may result in hospitalization in Japan. We assessed the effects of a four-minute digital animation titled Mari Info Japan on the level of anxiety experienced by international visitors to Japan. We conducted a non-randomized, controlled study at Narita International Airport outside Tokyo in December 2014. On the first day, we recruited international visitors for the intervention group at predetermined departure gates and, the following day, we sampled visitors for the control group at the same gates. We repeated this procedure twice over 4 days. The intervention group watched the digital animation and the control group read a standard travel guidebook in English. After receiving either intervention, they completed a questionnaire on their level of anxiety. The outcome was assessed using the Mari Meter-X, The State-Trait Anxiety Inventory Form Y (STAI-Y), and a face scale, before and immediately after the intervention. We analyzed data with Wilcoxon rank sum tests. We recruited 265 international visitors (134 in the intervention group, 131 in the control group), 241 (91%) of whom completed the questionnaire. Most of them had no previous Japanese health information before arrival in Japan. The level of anxiety about health services in Japan was significantly reduced in the intervention group (Mari Meter-X median: - 5 and 0, p < 0.001 and STAI-Y median: - 3 and 0, p < 0.001). The face scale analysis showed no significant difference. Watching a digital animation is more effective in reducing anxiety among international visitors to Japan compared with reading a standard brochure or guidebook. Such effective animations of health information should be more widely distributed to international visitors. UMIN-CTR (University Hospital Medical Information Network Center Clinical Trials Registry), UMIN000015023

Local Road Safety Peer Exchange – Region 1 : An RSPCB Peer Exchange

DOT National Transportation Integrated Search

2012-10-01

This report provides a summary of the proceedings of the Local Road Safety Peer Exchange held in Piscataway, New Jersey October 10th and 11th, 2012. The Federal Highway Administration (FHWA) sponsored the Peer Exchange in coordination with Region 1 L...

Visitor center flight room,detail of modern soffit and original ribbedconcrete ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Visitor center flight room,detail of modern soffit and original ribbed-concrete including original integrated duct work, view to northwest - Wright Brothers National Memorial Visitor Center, Highway 158, Kill Devil Hills, Dare County, NC

A review of the relationships between visitors and ungulates in national parks

USGS Publications Warehouse

Wright, R. Gerald

1998-01-01

The growth in ungulate populations and the enhanced viewing opportunities they provide in many national parks, a mixed blessing to park managers, has been viewed positively by most park visitors. Visitors, long the major constituency of parks, have played a major role in the way ungulates are managed. I trace the history of the relationships between visitors and ungulates in parks and provide examples of how visitors have influenced ungulate management policies. Today, although public influence on ungulate management seems to be greater than ever, the public has a poor understanding of park management actions. Park interpretive programs can be used to address this problem.

2015 National Park visitor spending effects: Economic contributions to local communities, states, and the nation

USGS Publications Warehouse

Cullinane Thomas, Catherine M.; Koontz, Lynne

2016-01-01

The National Park Service (NPS) manages the Nation’s most iconic destinations that attract millions of visitors from across the Nation and around the world. Trip-related spending by NPS visitors generates and supports a considerable amount of economic activity within park gateway communities. This economic effects analysis measures how NPS visitor spending cycles through local economies, generating business sales and supporting jobs and income.In 2015, the National Park System received over 307.2 million recreation visits. NPS visitors spent \\$16.9 billion in local gateway regions (defined as communities within 60 miles of a park). The contribution of this spending to the national economy was 295 thousand jobs, \\$11.1 billion in labor income, \\$18.4 billion in value added, and \\$32.0 billion in economic output. The lodging sector saw the highest direct contributions with \\$5.2 billion in economic output directly contributed to local gateway economies nationally. The sector with the next greatest direct contributions was the restaurants and bar sector, with \\$3.4 billion in economic output directly contributed to local gateway economies nationally.Results from the Visitor Spending Effects report series are available online via an interactive tool. Users can view year-by-year trend data and explore current year visitor spending, jobs, labor income, value added, and economic output effects by sector for national, state, and local economies. This interactive tool is available at http://go.nps.gov/vse.

Combining microscopic and macroscopic probes to untangle the single-ion anisotropy and exchange energies in an S =1 quantum antiferromagnet

NASA Astrophysics Data System (ADS)

Brambleby, Jamie; Manson, Jamie L.; Goddard, Paul A.; Stone, Matthew B.; Johnson, Roger D.; Manuel, Pascal; Villa, Jacqueline A.; Brown, Craig M.; Lu, Helen; Chikara, Shalinee; Zapf, Vivien; Lapidus, Saul H.; Scatena, Rebecca; Macchi, Piero; Chen, Yu-sheng; Wu, Lai-Chin; Singleton, John

2017-04-01

The magnetic ground state of the quasi-one-dimensional spin-1 antiferromagnetic chain is sensitive to the relative sizes of the single-ion anisotropy (D ) and the intrachain (J ) and interchain (J') exchange interactions. The ratios D /J and J'/J dictate the material's placement in one of three competing phases: a Haldane gapped phase, a quantum paramagnet, and an X Y -ordered state, with a quantum critical point at their junction. We have identified [Ni (HF2) (pyz) 2] SbF6 , where pyz = pyrazine, as a rare candidate in which this behavior can be explored in detail. Combining neutron scattering (elastic and inelastic) in applied magnetic fields of up to 10 tesla and magnetization measurements in fields of up to 60 tesla with numerical modeling of experimental observables, we are able to obtain accurate values of all of the parameters of the Hamiltonian [D =13.3 (1 ) K, J =10.4 (3 ) K, and J'=1.4 (2 ) K], despite the polycrystalline nature of the sample. Density-functional theory calculations result in similar couplings (J =9.2 K, J'=1.8 K) and predict that the majority of the total spin population resides on the Ni(II) ion, while the remaining spin density is delocalized over both ligand types. The general procedures outlined in this paper permit phase boundaries and quantum-critical points to be explored in anisotropic systems for which single crystals are as yet unavailable.

Visiting Patterns and Effects of Density at a Visitors' Center.

ERIC Educational Resources Information Center

Burrus-Bammel, Lei Lane; Bammel, Gene

1986-01-01

Reports on a study designed to investigate the relationship between the length of stay at a national forest visitor center and the density of the visitor population. Results indicate a significant negative correlation exists between the daily number of users and the average duration of their visits. (TW)

22 CFR 62.11 - Duties of responsible officers.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Duties of responsible officers. 62.11 Section 62.11 Foreign Relations DEPARTMENT OF STATE PUBLIC DIPLOMACY AND EXCHANGES EXCHANGE VISITOR PROGRAM... facilitate the successful completion of the exchange visitor's program. (c) Communications. Conduct the...

What’s a Weed? Knowledge, Attitude and Behaviour of Park Visitors about Weeds

PubMed Central

Ansong, Michael; Pickering, Catherine

2015-01-01

Weeds are a major threat to biodiversity globally degrading natural areas of high conservation value. But what are our attitudes about weeds and their management including weeds in national parks? Do we know what a weed is? Do we consider weeds a problem? Do we support their management? Are we unintentionally spreading weeds in parks? To answer these questions, we surveyed visitors entering a large popular national park near the city of Brisbane, Australia. Park visitors were knowledgeable about weeds; with >75% correctly defining weeds as ‘plants that grow where they are not wanted’. About 10% of the visitors, however, provided their own sophisticated definitions. This capacity to define weeds did not vary with people’s age, sex or level of education. We constructed a scale measuring visitors’ overall concern about weeds in parks using the responses to ten Likert scale statements. Over 85% of visitors were concerned about weeds with older visitors, hikers, and those who could correctly define weeds more concerned than their counterparts. The majority think visitors unintentionally introduce seeds into parks, with many (63%) having found seeds on their own clothing. However, over a third disposed of these seeds in ways that could facilitate weed spread. Therefore, although most visitors were knowledgeable and concerned about weeds, and support their control, there is a clear need for more effective communication regarding the risk of visitors unintentionally dispersing weed seeds in parks. PMID:26252004

The CO-12 and CO-13 J=2-1 and J=1-0 observations of hot and cold galaxies

NASA Technical Reports Server (NTRS)

Xie, Shuding; Schloerb, F. Peter; Young, Judith

1990-01-01

Researchers observed the nuclear regions of the galaxies NGC 2146 and IC 342 in CO-12 and CO-13 J=1-0 and J=2-1 lines using the Five College Radio Astronomy Observatory (FCRAO) 14m telescope. NGC 2146 is a peculiar Sab spiral galaxy. Its complex optical morphology and strong nuclear radio continuum emission suggest that it is experiencing a phase of violent activity and could have a polar ring which may have resulted from an interaction. IC 342 is a nearby luminous Scd spiral galaxy. Strong CO, infrared and radio continuum emission from the nuclear region of IC 342 indicate enhanced star-forming activity, and interferometric CO-12 J=1-0 observations reveal a bar-like structure centered on the nucleus, along the dark lane in the NS direction. These two galaxies are selected based on their different dust temperatures and star formation efficiencies (SFE) as derived from the Infrared Astronomy Satellite (IRAS) S sub 60 mu/S sub 100 mu flux density ratio and L sub IR/M(H2), respectively, with a relatively high SFE and dust temperature of 45 K in NGC 2146 and a relatively low SFE and dust temperature of 35 K in IC 342. The data from the different CO-12 and CO-13 lines are used to study the physical conditions in the molecular clouds in the galaxies. Researchers also consider the radiative transfer to determine whether a warm and optically thin gas component exists in these galaxies, as has been suggested in the case of M82 (Knapp et al. 1980), and whether the warm gas is related to the dust properties. Since optically thin CO-12 gas is rarely detected in our own Galaxy (except in outflow sources), to confirm its existence in external galaxies is very important in understanding the molecular content of external galaxies and its relationship to star formation activity. The present CO-12 J=2-1 and CO-13 J=2-1 and J=1-0 data for NGC 2146 are the first detections of this galaxy to our knowledge. The CO-12 J=1-0 distribution in NGC 2146 has been measured as part of the FCRAO

35. James River Visitor Center. Opened as an open air ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

35. James River Visitor Center. Opened as an open air visitor center in 1962, it was enclosed and a heating system installed in 1984 to allow use through the cooler months and help reduce vandalism. Looking northeast. - Blue Ridge Parkway, Between Shenandoah National Park & Great Smoky Mountains, Asheville, Buncombe County, NC

Visitor perceptions of crowding and discrimination at two National Forests in southern California

Treesearch

Deborah J. Chavez

1993-01-01

Visitors to southern California National Forests are urban dwellers and as a group are culturally diverse. To manage the National Forests for this diverse group of visitors, information is needed on their expectations, preferences, and experiences at recreation sites. To evaluate visitor perceptions of crowding and discrimination, to determine favorite activities, and...

22 CFR 62.72 - Staffing and support services.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Staffing and support services. 62.72 Section 62.72 Foreign Relations DEPARTMENT OF STATE PUBLIC DIPLOMACY AND EXCHANGES EXCHANGE VISITOR PROGRAM Student and Exchange Visitor Information System (SEVIS) § 62.72 Staffing and support services. (a...

Attendance motivations and visitor segments within a university agricultural festival

Treesearch

Carla Barbieri; Yasuharu Katsube; Christine Tew

2010-01-01

Festivals attract a variety of visitors driven by a complex set of motivations. The objective of this study was to identify and classify motivations for attending the South Farm Showcase (SFS), a university-based agricultural festival in Missouri. The study further developed a motivation-based segmentation of festival visitors and examined their distinct...

Research needs for a better understanding of wilderness visitor experiences

Treesearch

Stephen F. McCool; Chad P. Dawson

2012-01-01

What information is needed to facilitate enhanced management of visitor experiences in wilderness? The final session of the workshop comprised a facilitated process with the 20 participants to identify research and information needs to support wilderness visitor experience management. The Wilderness Act and the previous presentations and discussions not only provided a...

Temperature dependence of the effective interdimer exchange interaction in a weakly coupled antiferromagnetic dimer copper compound

NASA Astrophysics Data System (ADS)

Calvo, Rafael; Santana, Vinicius T.; Nascimento, Otaciro R.

2017-08-01

We report a variation with temperature T of the effective interdimeric interaction Jeff' in the antiferromagnetic (AFM) copper dimeric organic compound Cu2[TzTs] 4 (N -thiazol-2-yl-toluenesulfonamidate CuII). This T dependence was obtained from measurements of the effects in the electron paramagnetic resonance (EPR) spectra of the proposed quantum phase transition associated with the exchange-narrowing processes. Cu2[TzTs] 4 contains exchange-coupled pairs of CuII spins SA and SB (S =1 /2 ), with intradimeric AFM exchange coupling J0=(-115 ±1 ) cm-1 (Hex=-J0SA.SB ). The variation of the EPR linewidth of single crystals with field orientation around a "magic angle" where the transitions intersect and the integrated signal intensity of the so-called U peak of the powder spectrum were measured as a function of T . Modeling these data using arguments of exchange narrowing in the adiabatic regime considering the angular variation of the single-crystal spectra and a geometric description, we find that the effective interdimeric coupling | Jeff'| associated with the exchange frequency ωex is negligible for T ≪| J0/kB| when the units are uncoupled and | Jeff'|=(0.080 ±0.005 ) cm-1 (| Jeff'/J0|=7.0 × 10-4 ) at 298 K. Within this T interval, two ranges of | Jeff'| with linear temperature variation but different slopes, with a kink at ˜80 K, are observed and discussed. This T dependence arises from the growing population of the triplet state, and its relevance to the properties of various arrays of dimeric units is discussed. Our experimental procedures and results are compared with those of previous works in ion radical salts and dimeric metal compounds. The relation between the effective coupling | Jeff'| and the real interdimeric exchange coupling | J'| related to the chemical paths connecting neighbor units is discussed.

An investigation into the determining factors of zoo visitor attendances in UK zoos.

PubMed

Whitworth, Andrew William

2012-01-01

The debate as to which animals are most beneficial to keep in zoos in terms of financial and conservative value is readily disputed; however, demographic factors have also been shown to relate to visitor numbers on an international level. The main aims of this research were: (1) To observe the distribution and location of zoos across the UK, (2) to develop a way of calculating zoo popularity in terms of the species kept within a collection and (3) to investigate the factors related to visitor numbers regarding admission costs, popularity of the collection in terms of the species kept and local demographic factors. Zoo visitor numbers were positively correlated with generated popularity ratings for zoos based on the species kept within a collection and admission prices (Pearson correlation: n = 34, r = 0.268, P = 0.126 and n = 34, r = -0.430, P = 0.011). Animal collections are aggregated around large cities and tourist regions, particularly coastal areas. No relationship between demographic variables and visitor numbers was found (Pearson correlation: n = 34, r = 0.268, P = 0.126), which suggests that the popularity of a zoo's collection relative to the types and numbers of species kept is more indicative of a collection's visitor numbers than its surrounding demographic figures. Zoos should incorporate generating high popularity scores as part of their collection planning strategies, to ensure that they thrive in the future, not only as tourist attractions but also as major conservation organizations.

An Investigation into the Determining Factors of Zoo Visitor Attendances in UK Zoos

PubMed Central

Whitworth, Andrew William

2012-01-01

The debate as to which animals are most beneficial to keep in zoos in terms of financial and conservative value is readily disputed; however, demographic factors have also been shown to relate to visitor numbers on an international level. The main aims of this research were: (1) To observe the distribution and location of zoos across the UK, (2) to develop a way of calculating zoo popularity in terms of the species kept within a collection and (3) to investigate the factors related to visitor numbers regarding admission costs, popularity of the collection in terms of the species kept and local demographic factors. Zoo visitor numbers were positively correlated with generated popularity ratings for zoos based on the species kept within a collection and admission prices (Pearson correlation: n = 34, r = 0.268, P = 0.126 and n = 34, r = −0.430, P = 0.011). Animal collections are aggregated around large cities and tourist regions, particularly coastal areas. No relationship between demographic variables and visitor numbers was found (Pearson correlation: n = 34, r = 0.268, P = 0.126), which suggests that the popularity of a zoo's collection relative to the types and numbers of species kept is more indicative of a collection's visitor numbers than its surrounding demographic figures. Zoos should incorporate generating high popularity scores as part of their collection planning strategies, to ensure that they thrive in the future, not only as tourist attractions but also as major conservation organizations. PMID:22253799

Estimation of national forest visitor spending averages from National Visitor Use Monitoring: round 2

Treesearch

Eric M. White; Darren B. Goodding; Daniel J. Stynes

2013-01-01

The economic linkages between national forests and surrounding communities have become increasingly important in recent years. One way national forests contribute to the economies of surrounding communities is by attracting recreation visitors who, as part of their trip, spend money in communities on the periphery of the national forest. We use survey data collected...

A Mn(III) triplesalen-based 1D pearl necklace: exchange interactions and zero-field splittings in a C3-symmetric Mn(III)6 complex.

PubMed

Glaser, Thorsten; Heidemeier, Maik; Theil, Hubert; Stammler, Anja; Bögge, Hartmut; Schnack, Jürgen

2010-01-07

The reaction of the tert-butyl-substituted triplesalen ligand H(6)talen(t-Bu(2)) with 2.8 equivalents of Mn(OAc)(2) x 4 H(2)O in MeOH in the presence of NaBPh(4) results in the formation of the one-dimensional (1D) coordination polymer {[{(talen(t-Bu(2)))Mn(3)(MeOH)}(2)(mu(2)-OAc)(3)](mu(2)-OAc)}(n)(BPh(4))(2n) ({[Mn(III)(6)](OAc)}(n)(BPh(4))(2n)) which has been characterized by FTIR, elemental analysis, ESI-MS, single-crystal X-ray diffraction and magnetic measurements. The triplesalen ligand (talen(t-Bu(2)))(6-) provides three salen-like coordination compartments bridged in a meta-phenylene arrangement by a phloroglucinol backbone resulting in the trinuclear Mn(III) base unit {(talen(t-Bu(2)))Mn(3)}(3+). Two of these base units are bridged by three inner acetate ligands giving rise to the hexanuclear complex [{(talen(t-Bu(2)))Mn(3)(MeOH)}(2)(mu(2)-OAc)(3)](3+) ([Mn(III)(6)](3+)). These complexes are bridged by a single external acetate to form a 1D chain as pearls in a pearl necklace. Variable temperature-variable field and mu(eff)vs. T magnetic data have been analyzed in detail by full-matrix diagonalization of the appropriate spin-Hamiltonian consisting of isotropic exchange, zero-field splitting, and Zeeman interaction taking into account the relative orientation of the D-tensors. Satisfactory reproduction of the experimental data have been obtained for parameters sets J(1) = -(0.60 +/- 0.15) cm(-1), J(2) = -(1.05 +/- 0.15) cm(-1), and D(Mn) = -(3.0 +/- 0.7) cm(-1) with J(1) describing the exchange through the phloroglucinol backbone and J(2) describing the exchange through the inner acetates. The non-necessity to incorporate the bridging outer acetates correlates with the longer Mn-O bonds. The experimental data can neither be analyzed without incorporating zero-field splitting nor by the application of a single effective spin ground state.

Off-resonance R1rho relaxation outside of the fast exchange limit: an experimental study of a cavity mutant of T4 lysozyme.

PubMed

Korzhnev, Dmitry M; Orekhov, Vladislav Yu; Dahlquist, Frederick W; Kay, Lewis E

2003-05-01

An (15)N off-resonance R(1rho) spin relaxation study of an L99A point mutant of T4 lysozyme is presented. Previous CPMG-based relaxation dispersion studies of exchange in this protein have established that the molecule interconverts between a populated ground state and an excited state (3.4%) with an exchange rate constant of 1450 s(-1) at 25 degrees C. It is shown that for the majority of residues in this protein the offset dependence of the R(1rho) relaxation rates cannot be well fit using models which are only valid in the fast exchange regime. In contrast, a recently derived expression by Trott and Palmer (J. Magn. Reson., 154, 157-160, 2002) which is valid over a wider window of exchange than other relations, is shown to fit the data well. Values of (signed) chemical shift differences between exchanging sites have been extracted and are in reasonable agreement with shift differences measured using CPMG methods. A set of simulations is presented which help establish the exchange regimes that are best suited to analysis by off-resonance R(1rho) techniques.

Communicating minimum impact behavior with trailside bulletin boards: Visitor characteristics associated with effectiveness

Treesearch

Stephen F. McCool; David N. Cole

2000-01-01

Bulletin boards are a frequently used method of communicating minimum impact behaviors to wilderness visitors. But how effective are they? What types of visitors are most likely to pay attention to the messages posted there? This study used a field experiment to identify visitor characteristics associated with attention to minimum impact messages posted on a bulletin...

A recreation quality rapid assessment method for visitor capacity management

Treesearch

Kenneth Chilman; Stuart Schneider; Les Wadzinski

2007-01-01

A rapid assessment method for inexpensively obtaining representative samples of place-specific visitor numbers and perceptions of visit quality was tested on Niobrara National Scenic River (NSR). Similar tests have been done on national forest areas in Indiana and Illinois. The data are used in meetings focusing on visitor capacity management. The rapid assessment...

Art Therapy and Art Museum Education: A Visitor-Focused Collaboration

ERIC Educational Resources Information Center

Rochford, Jessie Spraggins

2017-01-01

In this article I use a visitor-focused lens to examine ways in which art therapy and art museum education share similar goals and could join their efforts to serve people and communities in mutually beneficial ways. Benefits of such collaboration include affective and social development and education of visitors, a useful framework for exploring…

Assessing recreation impacts to cliffs in Shenandoah National Park: Integrating visitor observation with trail and recreation site measurements

USGS Publications Warehouse

Wood, K.T.; Lawson, S.R.; Marion, J.L.

2006-01-01

The rock outcrops and cliffs of Shenandoah National Park provide habitat for several rare and endangered plant and animal species, including the federally endangered Shenandoah Salamander (Plethodon shenandoah; Ludwig et al., 1993). The location of the well-known park tour road, Skyline Drive, along the ridgeline provides exceptional access to many outcrops and cliffs throughout the park for a large number of the park?s 1.2 million annual visitors. Consequently, visitor use of cliff areas has led to natural resource impacts, including marked decreases in size and vigor of known rare plant populations. Despite the clear ecological value and potential threats to the natural resources at cliff areas, managers possess little information on visitor use of cliff sites and presently have no formal planning document to guide management. Thus, a park wide study of cliff sites was initiated during the 2005 visitor use season. As part of this research effort, our study used an integrative approach to study recreational use and visitor-caused resource impacts at one of the more heavily visited cliff sites in the park: Little Stony Man Cliffs (LSMC). In particular, this study integrated data from resource impact measurements and visitor use observation to help assess the effects of recreational use on the natural resources of LSMC. Procedures derived from campsite and trail impact studies were used to measure and characterize the amount of visitor-caused resource impacts on LSMC (Marion & Leung, 2001; Marion, 1995). Visitor use observations were conducted on top of LSMC to document and characterize the type and amount of recreational use the cliffs receive and the behaviors of recreationists that may contribute to cliff-top resource impacts. Resource impact measurement data show trampling disturbance present at LSMC, characterized by vegetation loss, exposed soil, and root exposure. Documentation of informal trails, soil erosion, tree damage, and tree stumps provide further

Microfabricated spin exchange relaxation free atomic magnetometer

NASA Astrophysics Data System (ADS)

Griffith, W. Clark; Jimenez-Martinez, Ricardo; Preusser, Jan; Knappe, Svenja; Kitching, John

2009-05-01

Methods first developed at NIST for MEMS-based atomic clocks have been applied to magnetic field sensors. The sensors are built around microfabricated alkali-atom vapor cells integrated with micro-optics and a VCSEL light source. Exceptional magnetic field sensitivities can be achieved in a small volume vapor cell, especially when operated in the spin-exchange relaxation free (SERF) regime. In this technique, magnetic resonance broadening due to spin-exchange collisions is suppressed under conditions of high alkali density and low magnetic fields. We have demonstrated sensitivities better than 100 fT/Hz^1/2 with a millimeter scale SERF sensor.ootnotetextV. Shah, S. Knappe, P.D.D. Schwindt, and J. Kitching, Nature Photonics, 1, 649 (2007). Adding flux concentratorsootnotetextW.C. Griffith, R. Jimenez-Martinez, V. Shah, S. Knappe, and J. Kitching, Appl. Phys. Lett., 94, 023502 (2009). around the vapor cell further improves the sensitivity to 10 fT/Hz^1/2, potentially providing a low power, noncryogenic alternative to SQUID sensors.

Inelastic scattering matrix elements for the nonadiabatic collision B(2P1/2)+H2(1Sigmag+,j)<-->B(2P3/2)+H2(1Sigmag+,j').

PubMed

Weeks, David E; Niday, Thomas A; Yang, Sang H

2006-10-28

Inelastic scattering matrix elements for the nonadiabatic collision B(2P1/2)+H2(1Sigmag+,j)<-->B(2P3/2)+H2(1Sigmag+,j') are calculated using the time dependent channel packet method (CPM). The calculation employs 1 2A', 2 2A', and 1 2A" adiabatic electronic potential energy surfaces determined by numerical computation at the multireference configuration-interaction level [M. H. Alexander, J. Chem. Phys. 99, 6041 (1993)]. The 1 2A' and 2 2A', adiabatic electronic potential energy surfaces are transformed to yield diabatic electronic potential energy surfaces that, when combined with the total B+H2 rotational kinetic energy, yield a set of effective potential energy surfaces [M. H. Alexander et al., J. Chem. Phys. 103, 7956 (1995)]. Within the framework of the CPM, the number of effective potential energy surfaces used for the scattering matrix calculation is then determined by the size of the angular momentum basis used as a representation. Twenty basis vectors are employed for these calculations, and the corresponding effective potential energy surfaces are identified in the asymptotic limit by the H2 rotor quantum numbers j=0, 2, 4, 6 and B electronic states 2Pja, ja=1/2, 3/2. Scattering matrix elements are obtained from the Fourier transform of the correlation function between channel packets evolving in time on these effective potential energy surfaces. For these calculations the H2 bond length is constrained to a constant value of req=1.402 a.u. and state to state scattering matrix elements corresponding to a total angular momentum of J=1/2 are discussed for j=0<-->j'=0,2,4 and 2P1/2<-->2P1/2, 2P3/2 over a range of total energy between 0.0 and 0.01 a.u.

22 CFR 62.71 - Control and production of the electronic Form DS-2019.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Control and production of the electronic Form DS-2019. 62.71 Section 62.71 Foreign Relations DEPARTMENT OF STATE PUBLIC DIPLOMACY AND EXCHANGES EXCHANGE VISITOR PROGRAM Student and Exchange Visitor Information System (SEVIS) § 62.71 Control and...

22 CFR 62.73 - Academic training.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Academic training. 62.73 Section 62.73 Foreign Relations DEPARTMENT OF STATE PUBLIC DIPLOMACY AND EXCHANGES EXCHANGE VISITOR PROGRAM Student and Exchange Visitor Information System (SEVIS) § 62.73 Academic training. (a) Students meeting the definition listed...

22 CFR 62.79 - Sanctions.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Sanctions. 62.79 Section 62.79 Foreign Relations DEPARTMENT OF STATE PUBLIC DIPLOMACY AND EXCHANGES EXCHANGE VISITOR PROGRAM Student and Exchange Visitor Information System (SEVIS) § 62.79 Sanctions. (a) The Department of State shall impose sanctions...

22 CFR 62.74 - Student employment.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Student employment. 62.74 Section 62.74 Foreign Relations DEPARTMENT OF STATE PUBLIC DIPLOMACY AND EXCHANGES EXCHANGE VISITOR PROGRAM Student and Exchange Visitor Information System (SEVIS) § 62.74 Student employment. (a) Students meeting the definition listed...

A Study of How the Student and Exchange Visa Information System Influences the Influx and Study of Graduate International Students in Science and Engineering in the U.S.

ERIC Educational Resources Information Center

Goncalves, Marcus V. A.

2009-01-01

The influx of international graduate students in science and engineering to the U.S. has changed since the terrorist attacks of September 11, 2001. The implementation of the Student and Exchange Visitor Information System (SEVIS) and related F-1 visa policies have required a higher level of scrutiny of the student visa procedures, and introduced…

26 CFR 1.1037-1 - Certain exchanges of United States obligations.

Code of Federal Regulations, 2012 CFR

2012-04-01

... regulations thereunder if the taxpayer receives money on the exchange. (2) Recognition of gain or loss... face value of $1,000. Thereafter, he surrenders this obligation to the United States in exchange solely...-year marketable bond having a face value of $100. On the date of exchange the bond received in the...

26 CFR 1.1037-1 - Certain exchanges of United States obligations.

Code of Federal Regulations, 2014 CFR

2014-04-01

... regulations thereunder if the taxpayer receives money on the exchange. (2) Recognition of gain or loss... face value of $1,000. Thereafter, he surrenders this obligation to the United States in exchange solely...-year marketable bond having a face value of $100. On the date of exchange the bond received in the...

26 CFR 1.1037-1 - Certain exchanges of United States obligations.

Code of Federal Regulations, 2013 CFR

2013-04-01

... regulations thereunder if the taxpayer receives money on the exchange. (2) Recognition of gain or loss... face value of $1,000. Thereafter, he surrenders this obligation to the United States in exchange solely...-year marketable bond having a face value of $100. On the date of exchange the bond received in the...

26 CFR 1.1037-1 - Certain exchanges of United States obligations.

Code of Federal Regulations, 2010 CFR

2010-04-01

... regulations thereunder if the taxpayer receives money on the exchange. (2) Recognition of gain or loss... face value of $1,000. Thereafter, he surrenders this obligation to the United States in exchange solely...-year marketable bond having a face value of $100. On the date of exchange the bond received in the...

26 CFR 1.1037-1 - Certain exchanges of United States obligations.

Code of Federal Regulations, 2011 CFR

2011-04-01

... regulations thereunder if the taxpayer receives money on the exchange. (2) Recognition of gain or loss... face value of $1,000. Thereafter, he surrenders this obligation to the United States in exchange solely...-year marketable bond having a face value of $100. On the date of exchange the bond received in the...

How Do Zoos "Talk" to Their General Visitors? Do Visitors "Listen"? A Mixed Method Investigation of the Communication between Modern Zoos and Their General Visitors

ERIC Educational Resources Information Center

Roe, Katie; McConney, Andrew; Mansfield, Caroline F.

2014-01-01

Modern zoos utilise a variety of education tools for communicating with visitors. Previous research has discussed the benefits of providing multiple education communications, yet little research provides an indication of what communications are being employed within zoos today. This research is a two-phased, mixed-methods investigation into the…

Foreign Personnel Exchange Programs: A Supporting Effort in Building Partnership Capacity

DTIC Science & Technology

2008-01-01

New Zealand Defence Force Relating to the Conduct ofExercise Long Look, (obtained from Daryl J. Cambell , 16 January, 2008). 45. U.S. Department...Daryl J. Cambell , 16 January, 2008). Commandant of the Marine Corps. 1STHALF CY 2008 A VIATION PERSONNEL EXCHANGE PROGRAM (PEP) AND lINTER-SERVICE

Do travel clinic visitors read information on sexual risk abroad in travel health brochures?

PubMed Central

Croughs, Mieke; de Gouw, Annemarie; Remmen, Roy; Van den Ende, Jef

2016-01-01

Background: A substantial proportion of travel clinic visitors have sexual encounters while abroad. Hence, guidelines on travel health recommend discussing sexual risk in a pre-travel consultation. However, previous studies showed that it often is not discussed. Although travel clinic visitors usually do receive written information on sexual risk abroad, few data are available on whether this information is read. Therefore, this prospective cohort study in travel clinic visitors was performed. Methods: Travel clinic visitors were invited to complete a questionnaire after return from their journey. Results: A total of 130 travellers (55%) responded. Half of them recorded they read the information on sexual risk. Male gender (OR 9.94 95% CI 3.12 – 31.63) and ‘travelling with others’ (OR 2.7 95% CI 1.29 – 5.78) were significant independent predictors of reading the information on sexual risk. High risk travellers, i.e. those travelling without a steady partner, were less likely to have read it. Although websites and apps were mentioned as better methods of providing information, none of the participants visited the websites on sexual behaviour and sexually transmitted infections recommended in the travel health brochure. Conclusion: Only half of travel clinic visitors read information on sexual risk in the health brochure received in the clinic and none of them visited the related websites mentioned in the brochure. Further research to identify the most effective way to inform travellers about sexual risk is needed. PMID:28989499

Do travel clinic visitors read information on sexual risk abroad in travel health brochures?

PubMed

Croughs, Mieke; de Gouw, Annemarie; Remmen, Roy; Van den Ende, Jef

2017-01-01

A substantial proportion of travel clinic visitors have sexual encounters while abroad. Hence, guidelines on travel health recommend discussing sexual risk in a pre-travel consultation. However, previous studies showed that it often is not discussed. Although travel clinic visitors usually do receive written information on sexual risk abroad, few data are available on whether this information is read. Therefore, this prospective cohort study in travel clinic visitors was performed. Travel clinic visitors were invited to complete a questionnaire after return from their journey. A total of 130 travellers (55%) responded. Half of them recorded they read the information on sexual risk. Male gender (OR 9.94 95% CI 3.12 - 31.63) and 'travelling with others' (OR 2.7 95% CI 1.29 - 5.78) were significant independent predictors of reading the information on sexual risk. High risk travellers, i.e. those travelling without a steady partner, were less likely to have read it. Although websites and apps were mentioned as better methods of providing information, none of the participants visited the websites on sexual behaviour and sexually transmitted infections recommended in the travel health brochure. Only half of travel clinic visitors read information on sexual risk in the health brochure received in the clinic and none of them visited the related websites mentioned in the brochure. Further research to identify the most effective way to inform travellers about sexual risk is needed.

Energetics of alkali and alkaline earth ion-exchanged zeolite A

DOE PAGES

Sun, Hui; Wu, Di; Liu, Kefeng; ...

2016-06-30

Alkali and alkaline earth ion-exchanged zeolite A samples were synthesized in aqueous exchange media. They were thoroughly studied by powder X-ray diffraction (XRD), electron microprobe (EMPA), thermogravimetric analysis and differential scanning calorimetry (TG-DSC), and high temperature oxide melt solution calorimetry. The hydration energetics and enthalpies of formation of these zeolite A materials from constituent oxides were determined. Specifically, the hydration level of zeolite A has a linear dependence on the average ionic potential ( Z/r) of the cation, from 0.894 (Rb-A) to 1.317 per TO 2 (Mg-A). The formation enthalpies from oxides (25 °C) range from –93.71 ± 1.77 (K-A)more » to –48.02 ± 1.85 kJ/mol per TO 2 (Li-A) for hydrated alkali ion-exchanged zeolite A, and from –47.99 ± 1.20 (Ba-A) to –26.41 ± 1.71 kJ/mol per TO 2 (Mg-A) for hydrated alkaline earth ion-exchanged zeolite A. As a result, the formation enthalpy from oxides generally becomes less exothermic as Z/r increases, but a distinct difference in slope is observed between the alkali and the alkaline earth series.« less

Multipartite quantum correlations in the extended J1-J2 Heisenberg model

NASA Astrophysics Data System (ADS)

Batle, J.; Tarawneh, O.; Nagata, Koji; Nakamura, Tadao; Abdalla, S.; Farouk, Ahmed

2017-11-01

Multipartite entanglement and the maximum violation of Bell inequalities are studied in finite clusters of spins in an extended J1-J2 Heisenberg model at zero temperature. The ensuing highly frustrated states will unveil a rich structure for different values of the corresponding spin-spin interaction strengths. The interplay between nearest-neighbors, next-nearest neighbors and further couplings will be explored using multipartite correlations. The model is relevant to certain quantum annealing computation architectures where an all-to-all connectivity is considered.

Test Results of Heat Exchanger Cleaning in Support of Ocean Thermal Energy Conversion.

DTIC Science & Technology

1980-12-01

tests evaluated the performance of three in-situ cleaning techniques in two potential heat exchanger materials ...1-6. 41Mann, M. J., 1979, "Possible Cu-Ni-Clad Steel Material and Abrasive Slurry Cleaning System for Plate-Fin-Type OTEC Heat Exchangers ," in...of a Shell-less Folded Aluminum Tube, OTEC Heat Exchanger ," Proceedings of the Sixth OTEC Conference, Washington, DC, June 19-22, 1978, pp 12.8-1

75 FR 20827 - Board of Visitors, United States Military Academy (USMA)

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-21

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy... Committee: United States Military Academy Board of Visitors. 2. Date: Tuesday, May 11, 2010. 3. Time: 10:30... following: Military Program, Physical Program, Intercollegiate Athletics, FY2010 Budget and Program...

Hand-touch contact assessment of high-touch and mutual-touch surfaces among healthcare workers, patients, and visitors.

PubMed

Cheng, V C C; Chau, P H; Lee, W M; Ho, S K Y; Lee, D W Y; So, S Y C; Wong, S C Y; Tai, J W M; Yuen, K Y

2015-07-01

Unlike direct contact with patients' body, hand hygiene practice is often neglected by healthcare workers (HCWs) and visitors after contact with patients' environment. Contact with hospital environmental items may increase risk of pathogen transmission. To enumerate the number of hand-touch contacts by patients, HCWs and visitors with any hospital environmental items. All contact-episodes between person and item were recorded by direct observation in a six-bed cubicle of acute wards for 33 working days. High-touch and mutual-touch items with high contact frequencies by HCWs, patients, and visitors were analysed. In total, 1107 person-episodes with 6144 contact-episodes were observed in 66 observation hours (average: 16.8 person-episodes and 93.1 contact-episodes per hour). Eight of the top 10 high-touch items, including bedside rails, bedside tables, patients' bodies, patients' files, linen, bed curtains, bed frames, and lockers were mutually touched by HCWs, patients, and visitors. Bedside rails topped the list with 13.6 contact-episodes per hour (mean), followed by bedside tables (12.3 contact-episodes per hour). Using patients' body contacts as a reference, it was found that medical staff and nursing staff contacted bedside tables [rate ratio (RR): 1.741, 1.427, respectively] and patients' files (RR: 1.358, 1.324, respectively) more than patients' bodies, and nursing staff also contacted bedside rails (RR: 1.490) more than patients' bodies. Patients' surroundings may be links in the transmission of nosocomial infections because many are frequently touched and mutually contacted by HCWs, patients, and visitors. Therefore, the focus of hand hygiene education, environmental disinfection, and other system changes should be enhanced with respect to high-touch and mutual-touch items. Copyright © 2015 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.

Mother and Home Visitor Personality Characteristics, the Mother-Home-Visitor Relationship, and Home Visit Intensity.

ERIC Educational Resources Information Center

Ispa, Jean; Sharp, Elizabeth; Brookes, Sheila; Wolfenstein, Miriam; Thornburg, Kathy; Fine, Mark; Lane, Valeri

Noting that families in home visiting early intervention programs receive only about half the number of intended visits, this research used quantitative and qualitative methods to investigate how personality and other factors affect the mother-home visitor relationship and thereby, influence home visit intensity. Participating in the study were 5…

75 FR 27452 - Visitor Services

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-17

... DEPARTMENT OF THE INTERIOR Bureau of Land Management 43 CFR Part 8360 [LLWO25000--L12200000.PM000--241A.00] RIN 1004-AD96 Visitor Services AGENCY: Bureau of Land Management, Interior. ACTION: Final rule. SUMMARY: The Bureau of Land Management (BLM) is amending its regulations to remove the Land and Water...

Characteristics of visitors to practitioners of homeopathy in a large adult Norwegian population (the HUNT 3 study).

PubMed

Løhre, Audhild; Rise, Marit By; Steinsbekk, Aslak

2012-07-01

The aim was to investigate characteristics of female and male visitors to practitioners of homeopathy in a large adult population in Norway. A cross-sectional adult total population health survey from Central Norway (the Nord-Trøndelag Health Study--HUNT 3) conducted in 2008. Variables included demographics, lifestyle, health status and health care use. Multivariate logistic regression models were employed to analyse the data. In total 50,827 participated (54% of the total population). The prevalence of visits to practitioners of homeopathy was 1.3%, a decline from 4.3% 10 years earlier. Both female and male visitors were 4-5 times more likely to experience recent somatic complaints. Further, female visitors were characterised by higher education, non-smoking, more chronic complaints, and visiting a physician or a chiropractor the past year whereas male visitors were characterised by seeking help for psychiatric complaints and visiting a chiropractor. There were no associations of age, marital status, physical activity, perceived global health, respiratory, skin, or musculoskeletal diseases with visiting practitioners of homeopathy. CONCLUSIONS AND PROPOSALS: There has been a marked decline in visits to practitioners of homeopathy. The results indicate a change in reasons to consult from complaints that influences the visitors' global health to less chronic complaints. Further research should compare changes in visits complementary and alternative medicine (CAM) practitioners and the characteristics of visitors to practitioners of homeopathy to characteristics of other CAM visitors. Copyright © 2012 The Faculty of Homeopathy. Published by Elsevier Ltd. All rights reserved.

7 CFR 502.10 - Photographs by visitors or for news, advertising, or commercial purposes.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 7 Agriculture 6 2011-01-01 2011-01-01 false Photographs by visitors or for news, advertising, or... RESEARCH CENTER PROPERTY, BELTSVILLE, MARYLAND § 502.10 Photographs by visitors or for news, advertising, or commercial purposes. Photographs may be taken by visitors or for news purposes without prior...

7 CFR 502.10 - Photographs by visitors or for news, advertising, or commercial purposes.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 7 Agriculture 6 2013-01-01 2013-01-01 false Photographs by visitors or for news, advertising, or... RESEARCH CENTER PROPERTY, BELTSVILLE, MARYLAND § 502.10 Photographs by visitors or for news, advertising, or commercial purposes. Photographs may be taken by visitors or for news purposes without prior...

7 CFR 502.10 - Photographs by visitors or for news, advertising, or commercial purposes.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 7 Agriculture 6 2012-01-01 2012-01-01 false Photographs by visitors or for news, advertising, or... RESEARCH CENTER PROPERTY, BELTSVILLE, MARYLAND § 502.10 Photographs by visitors or for news, advertising, or commercial purposes. Photographs may be taken by visitors or for news purposes without prior...

7 CFR 502.10 - Photographs by visitors or for news, advertising, or commercial purposes.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 7 Agriculture 6 2010-01-01 2010-01-01 false Photographs by visitors or for news, advertising, or... RESEARCH CENTER PROPERTY, BELTSVILLE, MARYLAND § 502.10 Photographs by visitors or for news, advertising, or commercial purposes. Photographs may be taken by visitors or for news purposes without prior...

7 CFR 502.10 - Photographs by visitors or for news, advertising, or commercial purposes.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 7 Agriculture 6 2014-01-01 2014-01-01 false Photographs by visitors or for news, advertising, or... RESEARCH CENTER PROPERTY, BELTSVILLE, MARYLAND § 502.10 Photographs by visitors or for news, advertising, or commercial purposes. Photographs may be taken by visitors or for news purposes without prior...

Spectrophotometry of J8, J9, and four Trojan asteroids from 0.32 to 1.05 microns

NASA Technical Reports Server (NTRS)

Smith, D. W.; Johnson, P. E.; Shorthill, R. W.

1981-01-01

New 30-channel narrowband photometry from 0.32 to 1.05 microns of the retrograde Jovian satellites J9 (to 0.7 micron) and J8 and the trailing Trojan asteroids 617, 884, 1172, and 1173 is presented. The data confirm previous measurements of J8, 617, 884, and 1172 at wavelengths less than 0.8 micron, but the extension into the infrared shows that the normalized spectral reflectance of these objects rises steadily from approximately 0.8 at 0.4 micron to approximately 1.4 at 1.05 microns, suggesting they are too bright in the near infrared to be C-type asteroids. The C classification of 1173 is confirmed. J9 is markedly redder than J8 at visible wavelengths. The results indicate a greater taxonomic contrast between these distant objects and main-belt asteroids than previously thought.

26 CFR 1.904(j)-0 - Outline of regulation provisions.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 26 Internal Revenue 9 2010-04-01 2010-04-01 false Outline of regulation provisions. 1.904(j)-0 Section 1.904(j)-0 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES Income from Sources Without the United States § 1.904(j)-0 Outline of...

Generalization versus Specialization in Pollination Systems: Visitors, Thieves, and Pollinators of Hypoestes aristata (Acanthaceae)

PubMed Central

Padyšáková, Eliška; Bartoš, Michael; Tropek, Robert; Janeček, Štěpán

2013-01-01

Many recent studies have suggested that the majority of animal-pollinated plants have a higher diversity of pollinators than that expected according to their pollination syndrome. This broad generalization, often based on pollination web data, has been challenged by the fact that some floral visitors recorded in pollination webs are ineffective pollinators. To contribute to this debate, and to obtain a contrast between visitors and pollinators, we studied insect and bird visitors to virgin flowers of Hypoestes aristata in the Bamenda Highlands, Cameroon. We observed the flowers and their visitors for 2-h periods and measured the seed production as a metric of reproductive success. We determined the effects of individual visitors using 2 statistical models, single-visit data that were gathered for more frequent visitor species, and frequency data. This approach enabled us to determine the positive as well as neutral or negative impact of visitors on H. aristata’s reproductive success. We found that (i) this plant is not generalized but rather specialized; although we recorded 15 morphotaxa of visitors, only 3 large bee species seemed to be important pollinators; (ii) the carpenter bee Xylocopa cf. inconstans was both the most frequent and the most effective pollinator; (iii) the honey bee Apis mellifera acted as a nectar thief with apparent negative effects on the plant reproduction; and (iv) the close relationship between H. aristata and carpenter bees was in agreement with the large-bee pollination syndrome of this plant. Our results highlight the need for studies detecting the roles of individual visitors. We showed that such an approach is necessary to evaluate the pollination syndrome hypothesis and create relevant evolutionary and ecological hypotheses. PMID:23593135

Generalization versus specialization in pollination systems: visitors, thieves, and pollinators of Hypoestes aristata (Acanthaceae).

PubMed

Padyšáková, Eliška; Bartoš, Michael; Tropek, Robert; Janeček, Stěpán

2013-01-01

Many recent studies have suggested that the majority of animal-pollinated plants have a higher diversity of pollinators than that expected according to their pollination syndrome. This broad generalization, often based on pollination web data, has been challenged by the fact that some floral visitors recorded in pollination webs are ineffective pollinators. To contribute to this debate, and to obtain a contrast between visitors and pollinators, we studied insect and bird visitors to virgin flowers of Hypoestes aristata in the Bamenda Highlands, Cameroon. We observed the flowers and their visitors for 2-h periods and measured the seed production as a metric of reproductive success. We determined the effects of individual visitors using 2 statistical models, single-visit data that were gathered for more frequent visitor species, and frequency data. This approach enabled us to determine the positive as well as neutral or negative impact of visitors on H. aristata's reproductive success. We found that (i) this plant is not generalized but rather specialized; although we recorded 15 morphotaxa of visitors, only 3 large bee species seemed to be important pollinators; (ii) the carpenter bee Xylocopa cf. inconstans was both the most frequent and the most effective pollinator; (iii) the honey bee Apis mellifera acted as a nectar thief with apparent negative effects on the plant reproduction; and (iv) the close relationship between H. aristata and carpenter bees was in agreement with the large-bee pollination syndrome of this plant. Our results highlight the need for studies detecting the roles of individual visitors. We showed that such an approach is necessary to evaluate the pollination syndrome hypothesis and create relevant evolutionary and ecological hypotheses.

76 FR 36933 - Board of Visitors for the National Fire Academy

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-23

...] Board of Visitors for the National Fire Academy AGENCY: Federal Emergency Management Agency, DHS. ACTION... of Visitors for the National Fire Academy (Board) will meet by teleconference on July 12, 2011. The... programs of the National Fire Academy (Academy) and advise the Administrator of the Federal Emergency...

77 FR 69648 - Board of Visitors for the National Fire Academy

Federal Register 2010, 2011, 2012, 2013, 2014

2012-11-20

...] Board of Visitors for the National Fire Academy AGENCY: Federal Emergency Management Agency, DHS. ACTION... of Visitors for the National Fire Academy (Board) will meet via teleconference on Wednesday, December... Board is to review annually the programs of the National Fire Academy (Academy) and advise the...

77 FR 21576 - Board of Visitors for the National Fire Academy

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-10

...] Board of Visitors for the National Fire Academy AGENCY: Federal Emergency Management Agency, DHS. ACTION... of Visitors for the National Fire Academy (Board) will meet on April 25 and 26, 2012. The meeting... National Fire Academy (Academy) and advise the Administrator of the Federal Emergency Management Agency...

76 FR 31308 - Board of Visitors, United States Military Academy (USMA)

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-31

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy... States Military Academy Board of Visitors. 2. Date: Wednesday, June 22, 2011. 3. Time: 12 p.m.-3 p.m... following: Military Program, Physical Program, Intercollegiate Athletics and Fiscal Year 2011 Budget. 7...

Increasing the "Curb Appeal" of Your Schools: Lessons from a Visitor.

ERIC Educational Resources Information Center

Painter, Suzanne R.

2001-01-01

In today's competitive atmosphere, certain marketing opportunities are often overlooked. Educators can attract students and parents to their school by publicizing the school's location, making the building's main entrance visible and inviting, having visitor parking available and accessible, and instructing office staff to greet visitors. (MLH)

Super-exchange in transition-metal oxides

NASA Astrophysics Data System (ADS)

Harrison, Walter

2007-03-01

Using contemporary tight-binding theory and parameters[1]. Anderson's perturbation approach [2] gives a qualitatively correct energy difference (a factor 2.3 too high) between ferromagnetic and antiferromagnetic configurations for MnO, It corresponds to a Heisenberg model with J2/J1= 11/7. Perturbation theory fails as the energy denominator gets smaller for FeO and CoO, and changes sign for NiO. Use of the special- points method to treat exchange-split bands gives smaller values not well characterized by a J1 and J2. Carrying it out self-consistently reorders the NiO levels and leads to still smaller energy differences near experiment for all four oxides, as estimated from the experimental N'eel temperature TN , The theory predicts a variation with pressure corresponding to (d/ TN)TN/d = -12.2 for MnO , near experiment, dropping to -9.1 for NiO. The theory is applicable also to the paramagnetic susceptibility. [1] Walter A. Harrison, Elementary Electronic Structure, World Scientific (Singapore, 1999), revised edition (2004). [2] P. W. Anderson, Phys. Rev. 115, 2 (1959).

Preparing Home Visitors to Partner with Families of Infants and Toddlers

ERIC Educational Resources Information Center

Roggman, Lori A.; Peterson, Carla A.; Chazan-Cohen, Rachel; Ispa, Jean; Decker, Kallie B.; Hughes-Belding, Kere; Cook, Gina A.; Vallotton, Claire D.

2016-01-01

Home visitors provide individualized services to families of infants and young children in their homes. Due to their unique role, home visitors must develop a specialized set of critical competencies--specific knowledge, skills, and attitudes. They therefore require preparation that differs in distinct ways from the preparation typically available…

77 FR 5818 - Board of Visitors for the National Fire Academy

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-06

...] Board of Visitors for the National Fire Academy AGENCY: Federal Emergency Management Agency, DHS. ACTION... of Visitors for the National Fire Academy (Board) will meet by teleconference on February 21, 2012... purpose of the Board is to review annually the programs of the National Fire Academy (Academy) and advise...

28 CFR 540.43 - Frequency of visits and number of visitors.

Code of Federal Regulations, 2010 CFR

2010-07-01

... visitors. 540.43 Section 540.43 Judicial Administration BUREAU OF PRISONS, DEPARTMENT OF JUSTICE INSTITUTIONAL MANAGEMENT CONTACT WITH PERSONS IN THE COMMUNITY Visiting Regulations § 540.43 Frequency of visits and number of visitors. The Warden shall allow each inmate a minimum of four hours visiting time per...

Hobby-Related Information-Seeking Behaviour of Highly Dedicated Online Museum Visitors

ERIC Educational Resources Information Center

Skov, Mette

2013-01-01

Introduction: This paper explores the characteristics of online museum visitors in an everyday life, information-seeking context. Method: A triangulation of research methods was applied. A Web questionnaire survey gave initial, quantitative information about online museum visitors to a military museum. Follow-up interviews (n = 24) obtained rich,…

Spatially characterizing visitor use and its association with informal trails in Yosemite Valley meadows.

PubMed

Walden-Schreiner, Chelsey; Leung, Yu-Fai

2013-07-01

Ecological impacts associated with nature-based recreation and tourism can compromise park and protected area goals if left unrestricted. Protected area agencies are increasingly incorporating indicator-based management frameworks into their management plans to address visitor impacts. Development of indicators requires empirical evaluation of indicator measures and examining their ecological and social relevance. This study addresses the development of the informal trail indicator in Yosemite National Park by spatially characterizing visitor use in open landscapes and integrating use patterns with informal trail condition data to examine their spatial association. Informal trail and visitor use data were collected concurrently during July and August of 2011 in three, high-use meadows of Yosemite Valley. Visitor use was clustered at statistically significant levels in all three study meadows. Spatial data integration found no statistically significant differences between use patterns and trail condition class. However, statistically significant differences were found between the distance visitors were observed from informal trails and visitor activity type with active activities occurring closer to trail corridors. Gender was also found to be significant with male visitors observed further from trail corridors. Results highlight the utility of integrated spatial analysis in supporting indicator-based monitoring and informing management of open landscapes. Additional variables for future analysis and methodological improvements are discussed.

Spatially Characterizing Visitor Use and Its Association with Informal Trails in Yosemite Valley Meadows

NASA Astrophysics Data System (ADS)

Walden-Schreiner, Chelsey; Leung, Yu-Fai

2013-07-01

Ecological impacts associated with nature-based recreation and tourism can compromise park and protected area goals if left unrestricted. Protected area agencies are increasingly incorporating indicator-based management frameworks into their management plans to address visitor impacts. Development of indicators requires empirical evaluation of indicator measures and examining their ecological and social relevance. This study addresses the development of the informal trail indicator in Yosemite National Park by spatially characterizing visitor use in open landscapes and integrating use patterns with informal trail condition data to examine their spatial association. Informal trail and visitor use data were collected concurrently during July and August of 2011 in three, high-use meadows of Yosemite Valley. Visitor use was clustered at statistically significant levels in all three study meadows. Spatial data integration found no statistically significant differences between use patterns and trail condition class. However, statistically significant differences were found between the distance visitors were observed from informal trails and visitor activity type with active activities occurring closer to trail corridors. Gender was also found to be significant with male visitors observed further from trail corridors. Results highlight the utility of integrated spatial analysis in supporting indicator-based monitoring and informing management of open landscapes. Additional variables for future analysis and methodological improvements are discussed.

77 FR 33202 - Meeting of the U.S. Naval Academy Board of Visitors; Correction

Federal Register 2010, 2011, 2012, 2013, 2014

2012-06-05

... DEPARTMENT OF DEFENSE Department of the Navy Meeting of the U.S. Naval Academy Board of Visitors... meeting of the U.S. Naval Academy Board of Visitors. The document failed to publish before the 15-day... Academy Board of Visitors or its Designated Federal Officer, the Board was unable to process the Federal...

Visitor Evaluations of Management Actions at a Highly Impacted Appalachian Trail Camping Area

NASA Astrophysics Data System (ADS)

Daniels, Melissa L.; Marion, Jeffrey L.

2006-12-01

Protected area management involves balancing environmental and social objectives. This is particularly difficult at high-use/high-impact recreation sites, because resource protection objectives may require substantial site management or visitor regulation. This study examined visitors’ reactions to both of these types of actions at Annapolis Rocks, Maryland, a popular Appalachian Trail camping area. We surveyed visitors before and after implementation of camping policies that included shifting camping to designated newly constructed campsites and prohibiting campfires. Survey results reveal that visitors were more satisfied with all social and environmental indicators after the changes were enacted. An Importance-Performance analysis also determined that management actions improved conditions for factors of greatest concern to campers prior to the changes. Posttreatment visitors were least satisfied with factors related to reduced freedom and to some characteristics of the constructed campsites. Although there was evidence of visitor displacement, the camping changes met management goals by protecting the camping area’s natural resources and improving social conditions.

26 CFR 1.1031(e)-1 - Exchange of livestock of different sexes.

Code of Federal Regulations, 2012 CFR

2012-04-01

... 26 Internal Revenue 11 2012-04-01 2012-04-01 false Exchange of livestock of different sexes. 1.1031(e)-1 Section 1.1031(e)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY... Exchange of livestock of different sexes. Section 1031(e) provides that livestock of different sexes are...

26 CFR 1.1031(e)-1 - Exchange of livestock of different sexes.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 26 Internal Revenue 11 2013-04-01 2013-04-01 false Exchange of livestock of different sexes. 1.1031(e)-1 Section 1.1031(e)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY... Exchange of livestock of different sexes. Section 1031(e) provides that livestock of different sexes are...

26 CFR 1.1031(e)-1 - Exchange of livestock of different sexes.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 26 Internal Revenue 11 2011-04-01 2011-04-01 false Exchange of livestock of different sexes. 1.1031(e)-1 Section 1.1031(e)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY... Exchange of livestock of different sexes. Section 1031(e) provides that livestock of different sexes are...

26 CFR 1.1031(e)-1 - Exchange of livestock of different sexes.

Code of Federal Regulations, 2014 CFR

2014-04-01

... 26 Internal Revenue 11 2014-04-01 2014-04-01 false Exchange of livestock of different sexes. 1.1031(e)-1 Section 1.1031(e)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY... Exchange of livestock of different sexes. Section 1031(e) provides that livestock of different sexes are...

Human values and codes of behavior: Changes in Oregon's Eagle Cap Wilderness visitors and their attitudes

Treesearch

Alan E. Watson; John C. Hendee; Hans P. Zaglauer

1996-01-01

A study of visitors to Oregon's Eagle Cap Wilderness in 1965 offered a baseline against which to evaluate how those who recreate in wilderness have changed their views of wilderness. A study of visitors to that same wilderness area in 1993 provided comparative data. Some characteristics of the visitors changed in ways that would suggest that the values visitors...

The influence of visitor interaction on the behavior of captive crowned lemurs (Eulemur coronatus) and implications for welfare.

PubMed

Jones, H; McGregor, P K; Farmer, H L A; Baker, K R

2016-05-01

Research suggests that zoo visitors can have positive, negative, and neutral impacts on captive primate welfare; however, research investigating the implications of visitor-animal feeding experiences is extremely limited. In the UK, a large proportion of BIAZA zoos that house lemur species offer visitor interaction experiences (16 out of 33). This study investigated the impact on the behavior of a family group of crowned lemurs (Eulemur coronatus) housed at Newquay Zoo, UK of visitors, accompanied by a keeper, entering the enclosure to feed the lemurs. Behavior was observed under four conditions: (i) during visitor feed; (ii) 30 min post-visitor feed; (iii) during a keeper feed; and (iv) 30 min post-keeper feed. Keeper feeds were conducted by keepers only, on the day after visitor feeds. The lemur group spent significantly less time performing aggressive behavior and was also significantly more interactive with keepers during visitor feeds compared with keeper-only feeds. There was no significant difference in behaviors performed immediately after interacting with visitors. Over the study period, there was a tendency for interactions with visitors to increase, and for interactions with keepers during visitor feeds to decrease. After a 28-day interval without visitor interaction, the lemurs' interaction with visitors had returned to the level recorded at the start of the study. In conclusion, visitor interaction did not compromise the welfare of the study subjects in either the short- or long-term, while an increase in visitor interactions over time has interesting implications for the enrichment properties of, or habituation to, unfamiliar humans. Zoo Biol. 35:222-227, 2016. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

Visitor Preferences for Visual Changes in Bark Beetle-Impacted Forest Recreation Settings in the United States and Germany

NASA Astrophysics Data System (ADS)

Arnberger, Arne; Ebenberger, Martin; Schneider, Ingrid E.; Cottrell, Stuart; Schlueter, Alexander C.; von Ruschkowski, Eick; Venette, Robert C.; Snyder, Stephanie A.; Gobster, Paul H.

2018-02-01

Extensive outbreaks of tree-killing insects are increasing across forests in Europe and North America due to climate change and other factors. Yet, little recent research examines visitor response to visual changes in conifer forest recreation settings resulting from forest insect infestations, how visitors weigh trade-offs between physical and social forest environment factors, or how visitor preferences might differ by nationality. This study explored forest visitor preferences with a discrete choice experiment that photographically simulated conifer forest stands with varying levels of bark beetle outbreaks, forest and visitor management practices, and visitor use levels and compositions. On-site surveys were conducted with visitors to State Forest State Park in Colorado ( n = 200), Lake Bemidji State Park in Minnesota ( n = 228), and Harz National Park in Germany ( n = 208). Results revealed that the condition of the immediate forest surrounding was the most important variable influencing visitors' landscape preferences. Visitors preferred healthy mature forest stands and disliked forests with substantial dead wood. The number of visitors was the most important social factor influencing visitor landscape preferences. Differences in the influence of physical and social factors on visual preferences existed between study sites. Findings suggest that both visual forest conditions and visitor use management are important concerns in addressing landscape preferences for beetle-impacted forest recreation areas.

Neither Too Young nor Too Old: A Comparison of Visitor Characteristics.

ERIC Educational Resources Information Center

Hood, Marilyn G.; Roberts, Lisa C.

1994-01-01

Identification and Characteristics of 2 key visitor groups, seniors aged 55 and older and younger guests aged 18-34, emerged from a visitor study at Chicago's Botanic Garden. Discusses their differing leisure preferences, expectations of the garden, psychographics, demographics, and the impact their distinct leisure interests and values have on…

A case study of communication with Anglo and Hispanic wilderness visitors

Treesearch

Julia Dawn Parker; Patricia L. Winter

1998-01-01

Educating, interpreting for, and communicating with wilderness visitors is necessary to promote appropriate low-impact wilderness recreation. The Angeles National Forest is located northeast of Los Angeles and is surrounded by a large and ethnically diverse population that provided a potentially ethnically diverse sample ofwilderness visitors for the purpose of this...

77 FR 41196 - Board of Visitors for the National Fire Academy

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-12

...] Board of Visitors for the National Fire Academy AGENCY: Federal Emergency Management Agency, DHS. ACTION... of Visitors for the National Fire Academy (Board) will meet by teleconference on July 26, 2012. The... purpose of the Board is to review annually the programs of the National Fire Academy (Academy) and advise...

78 FR 13030 - Board of Visitors, United States Military Academy (USMA)

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-26

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy... States Military Academy Board of Visitors. 2. Date: Wednesday, March 20, 2013. 3. Time: 2:00 p.m.-3:30 p... statements should be sent to the Designated Federal Officer (DFO) at: United States Military Academy, Office...

77 FR 31339 - Board of Visitors, United States Military Academy (USMA)

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-25

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy... States Military Academy Board of Visitors. 2. Date: Thursday, June 14, 2012. 3. Time: 12:00 p.m.-2:30 p.m... and Military Programs, to include Summer Training; the Academic Program, Summer Term Academic Program...

77 FR 58529 - Board of Visitors, United States Military Academy (USMA)

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-21

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, United States Military Academy...: United States Military Academy Board of Visitors. 2. Date: Friday, October 26, 2012. 3. Time: 3:30 p.m.-5... Officer (DFO) at: United States Military Academy, Office of the Secretary of the General Staff (MASG), 646...

Attitude Change When Presenting Science Museum Visitors with Risk-Benefit Information

ERIC Educational Resources Information Center

Phelan, Siëlle; Specht, Inga; Schnotz, Wolfgang; Lewalter, Doris

2017-01-01

Visitors to modern science museums are likely to encounter exhibitions presenting conflicting information, such as risks and benefits of new scientific developments. Such exhibitions encourage visitors to reflect upon different sides of a story and to form or adjust their attitudes toward the topic on display. However, there is very little…

Visitor perceptions of and support for management actions at an urban national historic site

Treesearch

Julie A. Strack; Craig A. Miller

2009-01-01

This study examined visitor use patterns, perceptions of crowding, and preferences for mixed-use management plans for the Kennesaw Mountain Road at Kennesaw Mountain National Battlefield Park (KMNBP) outside Atlanta, GA. Survey data showed significant differences between first-time visitors to KMNBP and repeat visitors. Most felt that the road should have open access...

Making Space for Experimentation, Collaboration, and Play: Re-Imagining the Drop-in Visitor Experience

ERIC Educational Resources Information Center

Mostov, Merilee

2014-01-01

In late 2006, the Columbus Museum of Art education department adopted a new framework that established creativity as the lens for learning and visitor experiences. But what does creativity look like in a gallery experience? What are visitor attitudes toward creativity? This article explores how the drop-in visitor experience was reimagined at the…

Valuation of National Park System Visitation: The Efficient Use of Count Data Models, Meta-Analysis, and Secondary Visitor Survey Data

NASA Astrophysics Data System (ADS)

Neher, Christopher; Duffield, John; Patterson, David

2013-09-01

The National Park Service (NPS) currently manages a large and diverse system of park units nationwide which received an estimated 279 million recreational visits in 2011. This article uses park visitor data collected by the NPS Visitor Services Project to estimate a consistent set of count data travel cost models of park visitor willingness to pay (WTP). Models were estimated using 58 different park unit survey datasets. WTP estimates for these 58 park surveys were used within a meta-regression analysis model to predict average and total WTP for NPS recreational visitation system-wide. Estimated WTP per NPS visit in 2011 averaged 102 system-wide, and ranged across park units from 67 to 288. Total 2011 visitor WTP for the NPS system is estimated at 28.5 billion with a 95% confidence interval of 19.7-43.1 billion. The estimation of a meta-regression model using consistently collected data and identical specification of visitor WTP models greatly reduces problems common to meta-regression models, including sample selection bias, primary data heterogeneity, and heteroskedasticity, as well as some aspects of panel effects. The article provides the first estimate of total annual NPS visitor WTP within the literature directly based on NPS visitor survey data.

Determinants of Visitor Pro-Environmental Intentions on Two Small Greek Islands: Is Ecotourism Possible at Coastal Protected Areas?

NASA Astrophysics Data System (ADS)

Kafyri, Andriani; Hovardas, Tasos; Poirazidis, Konstantinos

2012-07-01

A relatively under-researched question is whether there is a possibility of influencing environmentally aware tourists regarding ecotourism at destinations that continue to develop under a pattern of mass `seaside' tourism. Our objective was to assess the pro-environmental intentions of visitors at two small Greek islands, which are within a Natura 2000 site, specifically Paxoi and Antipaxoi. Intentions involved willingness to receive information about the protected area, willingness to accept pro-environmental limitations on recreational experience, and willingness-to-pay a conditional environmental conservation value added tax. In addition, we aimed to identify determinants of visitor pro-environmental intentions among visitor and visit characteristics, visitor satisfaction, and self-reported environmental knowledge, as well as anticipated outcomes of tourism development and suggestions for protected area management. We randomly collected 324 usable questionnaires during the summer season; 242 (74.69 %) by Greek visitors and 82 (25.31 %) by foreign visitors. Visitor satisfaction was quite high; however, visitors reported low levels of environmental knowledge. Our findings showed that the unique characteristics of the destination were not salient among visitors and that there is a lack of effective outreach campaigns, interpretation, and on-site environmental education programs. However, our study revealed high levels of visitor pro-environmental intentions that might support the promotion of ecotourism on the two islands. We provide recommendations based on determinants of visitor pro-environmental intentions, which might assist towards advancing visitor participation in environmental education projects, environmentally responsible behavior among visitors, and financial contribution to environmental conservation by visitors.

Determinants of visitor pro-environmental intentions on two small Greek islands: is ecotourism possible at coastal protected areas?

PubMed

Kafyri, Andriani; Hovardas, Tasos; Poirazidis, Konstantinos

2012-07-01

A relatively under-researched question is whether there is a possibility of influencing environmentally aware tourists regarding ecotourism at destinations that continue to develop under a pattern of mass 'seaside' tourism. Our objective was to assess the pro-environmental intentions of visitors at two small Greek islands, which are within a Natura 2000 site, specifically Paxoi and Antipaxoi. Intentions involved willingness to receive information about the protected area, willingness to accept pro-environmental limitations on recreational experience, and willingness-to-pay a conditional environmental conservation value added tax. In addition, we aimed to identify determinants of visitor pro-environmental intentions among visitor and visit characteristics, visitor satisfaction, and self-reported environmental knowledge, as well as anticipated outcomes of tourism development and suggestions for protected area management. We randomly collected 324 usable questionnaires during the summer season; 242 (74.69 %) by Greek visitors and 82 (25.31 %) by foreign visitors. Visitor satisfaction was quite high; however, visitors reported low levels of environmental knowledge. Our findings showed that the unique characteristics of the destination were not salient among visitors and that there is a lack of effective outreach campaigns, interpretation, and on-site environmental education programs. However, our study revealed high levels of visitor pro-environmental intentions that might support the promotion of ecotourism on the two islands. We provide recommendations based on determinants of visitor pro-environmental intentions, which might assist towards advancing visitor participation in environmental education projects, environmentally responsible behavior among visitors, and financial contribution to environmental conservation by visitors.

The Influence of an Interactive Educational Approach on Visitors' Learning in a Swiss Zoo

ERIC Educational Resources Information Center

Lindemann-Matthies, Petra; Kamer, Tobias

2005-01-01

A new but costly approach to providing visitors of zoos with information on conservation is the presentation of small exhibits by zoo professionals or volunteers. At these "touch tables" visitors can find out about the biology, ecology, and conservation of animals kept in the zoo. We studied the effect of a touch table on visitors'…

Characterisation and molecular dynamic simulations of J15 asparaginase from Photobacterium sp. strain J15.

PubMed

Yaacob, Mohd Adilin; Hasan, Wan Atiqah Najiah Wan; Ali, Mohd Shukuri Mohamad; Rahman, Raja Noor Zaliha Raja Abdul; Salleh, Abu Bakar; Basri, Mahiran; Leow, Thean Chor

2014-01-01

Genome mining revealed a 1011 nucleotide-long fragment encoding a type I L-asparaginase (J15 asparaginase) from the halo-tolerant Photobacterium sp. strain J15. The gene was overexpressed in pET-32b (+) vector in E. coli strain Rosetta-gami B (DE3) pLysS and purified using two-step chromatographic methods: Ni(2+)-Sepharose affinity chromatography and Q-Sepharose anion exchange chromatography. The final specific activity and yield of the enzyme achieved from these steps were 20 U/mg and 49.2%, respectively. The functional dimeric form of J15-asparaginase was characterised with a molecular weight of ~70 kDa. The optimum temperature and pH were 25°C and pH 7.0, respectively. This protein was stable in the presence of 1 mM Ni(2+) and Mg(2+), but it was inhibited by Mn(2+), Fe(3+) and Zn(2+) at the same concentration. J15 asparaginase actively hydrolysed its native substrate, l-asparagine, but had low activity towards l-glutamine. The melting temperature of J15 asparaginase was ~51°C, which was determined using denatured protein analysis of CD spectra. The Km, Kcat, Kcat/Km of J15 asparaginase were 0.76 mM, 3.2 s(-1), and 4.21 s(-1) mM(-1), respectively. Conformational changes of the J15 asparaginase 3D structure at different temperatures (25°C, 45°C, and 65°C) were analysed using Molecular Dynamic simulations. From the analysis, residues Tyr₂₄ , His₂₂, Gly₂₃, Val₂₅ and Pro₂₆ may be directly involved in the 'open' and 'closed' lid-loop conformation, facilitating the conversion of substrates during enzymatic reactions. The properties of J15 asparaginase, which can work at physiological pH and has low glutaminase activity, suggest that this could be a good candidate for reducing toxic effects during cancer treatment.

Wilderness visitor experiences: A selective review of 50 years of research

Treesearch

David N. Cole

2012-01-01

Two of the foremost conclusions from 50 years of research on wilderness visitors are that experiences are highly idiosyncratic and visitors are highly adaptable. The reasons people visit wilderness, their experiential aspirations, and their experiences in wilderness vary greatly among people and within people from visit to visit. Along with people's adaptability...

Crowding related norms in outdoor recreation: U.S. versus international visitors

Treesearch

Megha Budruk; Robert Manning

2003-01-01

Research on crowding-related norms has begun to explore differences across settings, time, activities, and visitor characteristics such as age, economic status, and country of origin. The literature examining visitors' country of origin suggests a mixed pattern. While there is some evidence of differences across country of origin, other studies have not indicated...

Global Network Connectivity Assessment via Local Data Exchange for Underwater Acoustic Sensor Networks

DTIC Science & Technology

2014-03-31

Network Connectivity Assessment via Local Data Exchange for Underwater Acoustic Sensor Networks M.M. Asadi H. Mahboubi A...2014 Global Network Connectivity Assessment via Local Data Exchange for Underwater Acoustic Sensor Networks Contract Report # AMBUSH.1.1 Contract...pi j /= 0. The sensor network considered in this work is composed of underwater sensors , which use acoustic waves for

Antibacterial activity and phospholipid recognition of the recombinant defensin J1-1 from Capsicum genus.

PubMed

Guillén-Chable, Francisco; Arenas-Sosa, Iván; Islas-Flores, Ignacio; Corzo, Gerardo; Martinez-Liu, Cynthia; Estrada, Georgina

2017-08-01

The gene of the four disulfide-bridged defensin J1-1 from Capsicum was cloned into the expression vector pQE30 containing a 6His-tag as fusion protein. This construct was transfected into Origami strain of Escherichia coli and expressed after induction with isopropyl thiogalactoside (IPTG). The level of expression was 4 mg/L of culture medium, and the His-tagged recombinant defensin (HisXarJ1-1) was expressed exclusively into inclusion bodies. After solubilization, HisXarJ1-1 was purified by affinity and hydrophobic interaction chromatography. The reverse-phase HPLC profile of the HisXarJ1-1 product obtained from the affinity chromatography step showed single main peptide fraction of molecular masses of 7050.6 Da and after treatment with DTT a single fraction of 7, 042.6 Da corresponding to the reduced peptide was observed. An in vitro folding step of the HisXarJ1-1 generated a distinct profile of oxidized forms of the peptide this oxidized peptide was capable of binding phosphatidic acid in vitro. Possible dimer and oligomer of HisXarJ1-1 were visible in gel electrophoresis and immunodetected with anti-His antibodies. Pure recombinant defensin HisXarJ1-1 exhibited antibacterial activity against Pseudomonas aeruginosa. Copyright © 2017 Elsevier Inc. All rights reserved.

The International Association for the Exchange of Students for Technical Experience. 32nd Annual Report 1979.

ERIC Educational Resources Information Center

International Association for the Exchange of Students for Technical Experience/United States, Columbia, MD.

After a general outline of the organization of the International Association for the Exchange of Students for Technical Experience and a brief introduction to its functions and activities, this annual report contains the international report. This includes: the report of the General Secretary; a list of international visits and visitors; publicity…

Visitor Preferences for Visual Changes in Bark Beetle-Impacted Forest Recreation Settings in the United States and Germany.

PubMed

Arnberger, Arne; Ebenberger, Martin; Schneider, Ingrid E; Cottrell, Stuart; Schlueter, Alexander C; von Ruschkowski, Eick; Venette, Robert C; Snyder, Stephanie A; Gobster, Paul H

2018-02-01

Extensive outbreaks of tree-killing insects are increasing across forests in Europe and North America due to climate change and other factors. Yet, little recent research examines visitor response to visual changes in conifer forest recreation settings resulting from forest insect infestations, how visitors weigh trade-offs between physical and social forest environment factors, or how visitor preferences might differ by nationality. This study explored forest visitor preferences with a discrete choice experiment that photographically simulated conifer forest stands with varying levels of bark beetle outbreaks, forest and visitor management practices, and visitor use levels and compositions. On-site surveys were conducted with visitors to State Forest State Park in Colorado (n = 200), Lake Bemidji State Park in Minnesota (n = 228), and Harz National Park in Germany (n = 208). Results revealed that the condition of the immediate forest surrounding was the most important variable influencing visitors' landscape preferences. Visitors preferred healthy mature forest stands and disliked forests with substantial dead wood. The number of visitors was the most important social factor influencing visitor landscape preferences. Differences in the influence of physical and social factors on visual preferences existed between study sites. Findings suggest that both visual forest conditions and visitor use management are important concerns in addressing landscape preferences for beetle-impacted forest recreation areas.

The relationship between visitor characteristics and learning-associated behaviors in a science museum discovery space

NASA Astrophysics Data System (ADS)

Lozowski Boisvert, Dorothy; Jochums Slez, Brenda

As informal educational institutions, science museums must do more than entertain and amaze visitors. Museum educators must design exhibits that attract and hold the attention of visitors long enough so that the visitors become engaged with the exhibits and learn from them. In order for museum educators to develop such exhibits, more information is needed about the variables associated with learning in museums. This study contributes to the growing body of knowledge on informal education by examining the relationship between visitor characteristics and attraction, holding power, and visitor engagement.One hundred fifty-four visitors to a science museum discovery space were observed as they interacted freely with the exhibits. Trained volunteers recorded the subjects' movements including the exhibits at which they stopped (attraction), the amount of time spent at each exhibit (holding power), and behaviors indicative of subjects' engagement levels with the exhibits. Data indicated significant differences between age group and the holding power of exhibits. Though not significant statistically, a similar trend was noted between age group and attraction and visitor engagement level. No significant differences were found between gender or social grouping and attraction, holding power, or engagement levels.

Perceived effects of setting attributes on visitor experiences in wilderness: variation with situational context and visitor characteristics.

PubMed

Cole, David N; Hall, Troy E

2009-07-01

Understanding how setting attributes influence the nature of the visitor experience is crucial to effective recreation management. Highly influential attributes are useful indicators to monitor within a planning framework, such as Limits of Acceptable Change. This study sought to identify the setting attributes perceived to have the most profound effect on the ability to have "a real wilderness experience" and to assess the degree to which attribute importance varied with situational context and visitor characteristics. To this end, exiting hikers were surveyed at moderate and very high use trailheads in Alpine Lakes Wilderness, WA (USA), and Three Sisters Wilderness, OR (USA). They were asked about the degree to which encountering varying levels of different setting attributes would add to or detract from their experience. Attributes with the largest range of effect on experience, based on evaluations of different levels, were considered most important. The most influential attributes were litter and several types of campsite interaction--people walking through camp and number of other groups camping close by. The perceived importance of setting attributes did not vary much between wilderness locations with substantially different use levels, suggesting that conclusions are robust and generalizable across wilderness areas. There also was little difference in the perceptions of day and overnight visitors. In contrast, we found substantial variation in the perceived importance of setting attributes with variation in wilderness experience, knowledge, attachment, and motivation. Our results validate the emphasis of many wilderness management plans on indicators of social interaction, such as number of encounters.

76 FR 58786 - Meeting of the Defense Acquisition University Board of Visitors

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-22

... DEPARTMENT OF DEFENSE Office of the Secretary Meeting of the Defense Acquisition University Board of Visitors AGENCY: Defense Acquisition University, Department of Defense (DoD). ACTION: Notice of... of the Defense Acquisition University Board of Visitors will take place. DATES: Thursday, October 13...

An investigation of the impact of Melbourne Zoo's "Seal-the-Loop" donate call-to-action on visitor satisfaction and behavior.

PubMed

Mellish, Sarah; Sanders, Ben; Litchfield, Carla A; Pearson, Elissa L

2017-05-01

Modern zoos are uniquely positioned to educate the public about environmental issues and promote conservation action. This report investigates the introduction of a donation request during an interactive fur seal presentation (as part of Melbourne Zoo's "Seal-the-Loop" initiative) on visitor satisfaction, perceptions of donation as a way to help wild fur seals, and donation behaviors. Comparisons are made between three groups surveyed upon exit: (1) viewed the interactive fur seal presentation prior to the donation request implementation (pledge-presentation: N = 86; see Mellish, Pearson, Sanders, and Litchfield []; International Zoo Yearbook 129:129-154); (2) viewed the interactive fur seal presentation including the donation request (donate-presentation: N = 82); and (3) viewed the fur seal exhibit and donation point but not the presentation and were not directly asked to make a donation (donate-exhibit: N = 82). Findings demonstrate visitor satisfaction with the interactive fur seal presentation was not negatively impacted following the implementation of the donate request (with >92% of pledge-presentation and donate-presentation visitors providing a "satisfied" or "very satisfied" rating). Only the donate-presentation visitors reported donation as a conservation action to help wild fur seals (19.18%; 0% for pledge-presentation visitors). While both donate-exhibit (39.51%) and donate-presentation visitors (60.75%) self-reported making donations or intending to do so, donation behavior was significantly increased for visitors who had viewed the fur seal presentation. Findings provide preliminary support that zoos may utilize interactive educational presentations to effectively ask visitors for donations to support specific conservation projects, without negatively impacting on satisfaction and with a relatively high level of visitor engagement. © 2017 Wiley Periodicals, Inc.

Modelling magnetic anisotropy of single-chain magnets in |d/J| ≥ 1 regime

NASA Astrophysics Data System (ADS)

Haldar, Sumit; Raghunathan, Rajamani; Sutter, Jean-Pascal; Ramasesha, S.

2017-11-01

Single-molecule magnets (SMMs) with single-ion anisotropies comparable to exchange interactions J between spins have recently been synthesised. Here, we provide theoretical insights into the magnetism of such systems. We study spin chains with site-spins, s = 1, 3/2 and 2 and strength of on-site anisotropy comparable to the exchange constants between the spins. We find that large on-site anisotropies lead to crossing of the states with different MS values in the same spin manifold to which they belong in the absence of anisotropy. When on-site anisotropy is increased further, we also find that the MS states of the higher energy spin states descend below the MS states of the ground spin manifold. Giant spin in this limit is no longer conserved and describing the axial and rhombic anisotropies of the molecule, DM and EM, respectively, is not possible. However, the giant spin of the low-lying large MS states is very nearly an integer and, using this spin value, it is possible to construct an effective spin-Hamiltonian and compute the molecular magnetic anisotropy constants DM and EM. We report effect of finite sizes, rotations of site anisotropies and chain dimerisation on the effective anisotropy of the spin chains.

The museum in adult education: A psychological study of visitor reactions

NASA Astrophysics Data System (ADS)

Dufresne-Tasse, Colette; Lefebvre, Andre

1994-11-01

The authors of this article argue that classroom education does not fit the museum setting and that researchers need to re-think the basic principles for the use of museums in adult education. In order to do this, it is necessary to understand the psychology of the museum visitor. However, while much has been published on visitor behaviour and the factors influencing it, very little is known about what visitors think or feel in the exhibition room. A research team at the University of Montreal is currently studying the psychological reactions of adults when observing museum exhibits. This paper describes the methodology used by this team, some of the results obtained and the perspectives opened up by the study.

Using crowd-sourced photos to assess seasonal patterns of visitor use in mountain-protected areas.

PubMed

Walden-Schreiner, Chelsey; Rossi, Sebastian Dario; Barros, Agustina; Pickering, Catherine; Leung, Yu-Fai

2018-02-12

Managing protected areas effectively requires information about patterns of visitor use, but these data are often limited. We explore how geotagged photos on Flickr, a popular photo-sharing social-media site, can generate hotspot maps and distribution models of temporal and spatial patterns of use in two mountain-protected areas of high conservation value. In Aconcagua Provincial Park (Argentina), two routes to the summit of Aconcagua were used in summer, but most visitors stayed close to the main road, using formal and informal walking trails and the Visitor Centre, while in winter, there was very limited visitation. In Kosciuszko National Park (Australia), alpine walking trails were popular in summer, but in winter, most visitors stayed in the lower altitude ski resorts and ski trails. Results demonstrate the usefulness of social-media data alone as well as a complement for visitor monitoring, providing spatial and temporal information for site-specific and park-level management of visitors and potential impacts in conservation areas.

26 CFR 1.989(b)-1 - Definition of weighted average exchange rate.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 26 Internal Revenue 10 2011-04-01 2011-04-01 false Definition of weighted average exchange rate. 1... (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES (CONTINUED) Export Trade Corporations § 1.989(b)-1 Definition of weighted average exchange rate. For purposes of section 989(b)(3) and (4), the term “weighted...

Frequent visitors at the psychiatric emergency room - A literature review.

PubMed

Schmidt, Manuela

2018-03-01

Frequent visitors at the psychiatric emergency room (PER) constitute a small subgroup of patients, yet they are responsible for a disproportionate number of visits and thus claim considerable resources. Their needs are often left unmet and their repetitive visits reflect their dissatisfaction as well as that of PERs' staff. Motivated by these dilemmas, this study systematically reviews the literature about frequent visitors at PER and seeks to answer two questions: What characterizes frequent visitors at PER in the literature? and What characterizes PER in the literature? Based on 29 studies, this paper offers answers to the two questions based on a strength weakness opportunities and threats (SWOT) analysis. The results of the review and subsequent analysis of the literature revealed the multiplicity and complexity of frequent visitors' characteristics and how they appear to converge. Commonalities were more difficult to identify in PER characteristics. In some cases, this happened because the characteristics were poorly described or were context specific. As a result, it was not easy to compare the studies on PER. Based on SWOT and the findings of the analysis, the paper proposes new venues of research and suggests how the field of mental health might develop by taking into account its opportunities and threats.

Recreation visitor preferences for and perceptions of outdoor recreation setting attributes

Treesearch

Michael A. Tarrant; Erin Smith; H. Ken Cordell

1999-01-01

Between 1990 and 1994, a comprehensive national survey was conducted by the USDA Forest Service (FS), Southern Research Station, to measure visitor preferences for, and perceptions of, setting attributes at a variety of outdoor recreation sites. Over 11,000 visitors at 31 outdoor recreation sites across the country were interviewed in this study. The study was entitled...

U.S. Department of Energy Solar Decathlon Visitors Guide 2015

DOE Office of Scientific and Technical Information (OSTI.GOV)

2015-09-03

The U.S. Department of Energy 2015 Visitors Guide is a free, hard-copy publication distributed free to those attending the Solar Decathlon event. The publications' objectives are to serve as the primary information resource for those in attendance, and to deliver a compelling message about the Solar Decathlon's success as a proven workforce development program and its role in educating students and the public about clean energy products and design solutions. The U.S. Department of Energy 2015 Visitors Guide SD15 Visitors Guide goals are to guide attendees through the Solar Decathlon village; List and explain the 10 contests; educate attendees aboutmore » the participating teams and their competition houses; provide access to more information on the Solar Decathlon website through the use of QR codes; and acknowledge the support of all event sponsors.« less

76 FR 45543 - Board of Visitors, Defense Language Institute Foreign Language Center

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-29

... DEPARTMENT OF DEFENSE Department of the Army Board of Visitors, Defense Language Institute Foreign Language Center AGENCY: Department of the Army, DOD. ACTION: Notice; cancellation. SUMMARY: The Board of Visitors, Defense Language Institute Foreign Language Center meeting scheduled for August 3 and 4, 2011...

75 FR 56078 - Federal Advisory Committee; Defense Acquisition University Board of Visitors

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-15

... p.m. DAU Strategic Planning Discussion Open Forum. Public's Accessibility to the Meeting Pursuant to... University Board of Visitors AGENCY: Office of the Assistant Secretary of Defense, Defense. ACTION: Meeting....150, the Department of Defense announces that the Defense Acquisition University Board of Visitors...

Determining single-ion and spatial exchange anisotropies by pulsed-field magnetometry

DOE Office of Scientific and Technical Information (OSTI.GOV)

Manson, J. L.; Villa, J. A.; Singleton, John

2017-02-13

The magnetic ground-state of the Q1D S = 1 antiferromagnetic (AFM) chain is sensitive to the single-ion anisotropy (D) and the relative strength of intra- (J) and interchain (J’) exchange interactions. The ratios D/J and J’/J dictate the material’s placement on the phase diagram for which three competing phases are known to theoretically exist: Haldane, XY and quantum paramagnetic. We identified [Ni(HF 2)(pyz) 2]SbF 6 (pyz = pyrazine) as a candidate in which to explore proximity to these phases.

26 CFR 31.3121(j)-1 - Covered transportation service.

Code of Federal Regulations, 2012 CFR

2012-04-01

... 26 Internal Revenue 15 2012-04-01 2012-04-01 false Covered transportation service. 31.3121(j)-1... § 31.3121(j)-1 Covered transportation service. (a) Transportation systems acquired in whole or in part... operation of a public transportation system constitutes covered transportation service if any part of the...

26 CFR 31.3121(j)-1 - Covered transportation service.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 26 Internal Revenue 15 2011-04-01 2011-04-01 false Covered transportation service. 31.3121(j)-1... § 31.3121(j)-1 Covered transportation service. (a) Transportation systems acquired in whole or in part... operation of a public transportation system constitutes covered transportation service if any part of the...

26 CFR 31.3121(j)-1 - Covered transportation service.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 26 Internal Revenue 15 2013-04-01 2013-04-01 false Covered transportation service. 31.3121(j)-1... § 31.3121(j)-1 Covered transportation service. (a) Transportation systems acquired in whole or in part... operation of a public transportation system constitutes covered transportation service if any part of the...

26 CFR 31.3121(j)-1 - Covered transportation service.

Code of Federal Regulations, 2014 CFR

2014-04-01

... 26 Internal Revenue 15 2014-04-01 2014-04-01 false Covered transportation service. 31.3121(j)-1... § 31.3121(j)-1 Covered transportation service. (a) Transportation systems acquired in whole or in part... operation of a public transportation system constitutes covered transportation service if any part of the...

Ground-state ordering of the J1-J2 model on the simple cubic and body-centered cubic lattices

NASA Astrophysics Data System (ADS)

Farnell, D. J. J.; Götze, O.; Richter, J.

2016-06-01

The J1-J2 Heisenberg model is a "canonical" model in the field of quantum magnetism in order to study the interplay between frustration and quantum fluctuations as well as quantum phase transitions driven by frustration. Here we apply the coupled cluster method (CCM) to study the spin-half J1-J2 model with antiferromagnetic nearest-neighbor bonds J1>0 and next-nearest-neighbor bonds J2>0 for the simple cubic (sc) and body-centered cubic (bcc) lattices. In particular, we wish to study the ground-state ordering of these systems as a function of the frustration parameter p =z2J2/z1J1 , where z1 (z2) is the number of nearest (next-nearest) neighbors. We wish to determine the positions of the phase transitions using the CCM and we aim to resolve the nature of the phase transition points. We consider the ground-state energy, order parameters, spin-spin correlation functions, as well as the spin stiffness in order to determine the ground-state phase diagrams of these models. We find a direct first-order phase transition at a value of p =0.528 from a state of nearest-neighbor Néel order to next-nearest-neighbor Néel order for the bcc lattice. For the sc lattice the situation is more subtle. CCM results for the energy, the order parameter, the spin-spin correlation functions, and the spin stiffness indicate that there is no direct first-order transition between ground-state phases with magnetic long-range order, rather it is more likely that two phases with antiferromagnetic long range are separated by a narrow region of a spin-liquid-like quantum phase around p =0.55 . Thus the strong frustration present in the J1-J2 Heisenberg model on the sc lattice may open a window for an unconventional quantum ground state in this three-dimensional spin model.

KENNEDY SPACE CENTER, FLA. - The new Florida license plate honoring the fallen astronauts of Challenger and Columbia is unveiled at the KSC Visitor Complex, in front of the Space Memorial Mirror. Participants in the dedication included (from left) Susan Berry, a teacher from Mila Elementary School in Brevard County; Sen. Bill Posey; Florida Rep. Ralph Poppell; and Kirstie McCool Chadwick, sister of William “Willie” J. McCool, who was the pilot on mission STS-107 that ended in disaster Feb. 1, 2003. The Space Mirror, 42-1/2 feet high by 50 feet wide, illuminates the names of the fallen astronauts cut through the monument’s black granite surface.

NASA Image and Video Library

2004-01-28

KENNEDY SPACE CENTER, FLA. - The new Florida license plate honoring the fallen astronauts of Challenger and Columbia is unveiled at the KSC Visitor Complex, in front of the Space Memorial Mirror. Participants in the dedication included (from left) Susan Berry, a teacher from Mila Elementary School in Brevard County; Sen. Bill Posey; Florida Rep. Ralph Poppell; and Kirstie McCool Chadwick, sister of William “Willie” J. McCool, who was the pilot on mission STS-107 that ended in disaster Feb. 1, 2003. The Space Mirror, 42-1/2 feet high by 50 feet wide, illuminates the names of the fallen astronauts cut through the monument’s black granite surface.

Travel simulation modeling: an emerging tool for visitor management in wilderness

Treesearch

David N. Cole

2004-01-01

Rhe amount, type, timing, and location of visitor use all have profound effects on the quality of the natural resources and visitor experiences in wilderness. Therefore, it is important to monitor the flow of visitation, in space and over time, and predict how distributions are likely to change in response to both management actions and factors that are not subject to...

Possible new VY Scl-type variable 1RXS J075330.1+044606

NASA Astrophysics Data System (ADS)

Sokolovsky, K.; Denisenko, D.; Mescheryakov, A.; Tkachenko, A.; Korotkiy, S.; Gerke, V.

2012-02-01

We report the discovery of a possible new VY Scl-type cataclysmic variable associated with previously unidentified X-ray source 1RXS J075330.1+044606. The variable optical object USNO-B1.0 0947-0148659 (07:53:30.78 +04:45:56.3, J2000) located 15" from the X-ray source listed in the ROSAT All Sky Survey Faint Source Catalog (Voges et al., 2000, IAUC, 7432) was identified from information listed in the USNO-B1.0 catalog (Monet et al.

75 FR 22562 - Board of Visitors Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-29

... Acquisition University (DAU) Board of Visitors (BoV) will be held at DAU Headquarters at Fort Belvoir, Virginia. The purpose of this meeting is to report back to the BoV on continuing items of interest. DATES...

Historic building houses Stennis visitor center

NASA Image and Video Library

2004-04-09

The facility and tower used to view early engine tests at Stennis Space Center now house the site's visitor center and museum. In addition to inside exhibits, an outdoor Rocket Park features various engines and space-related artifacts. The viewing tower now is used as a classroom for various education endeavors.

CENTCOM > VISITORS AND PERSONNEL > EMERGENCY PREPAREDNESS

Science.gov Websites

VISITORS AND PERSONNEL FAMILY CENTER FAMILY READINESS CENTCOM WEBMAIL SOCIAL MEDIA SECURITY ACCOUNTABILITY chemicals/materials, etc.). This site offers basic information regarding personal and family preparedness preparedness. To aid in making personal and family preparedness plans, there are many resources available to

Scottish Visitor Attractions: Managerial Competence Requirements

ERIC Educational Resources Information Center

Watson, Sandra; McCracken, Martin; Hughes, Moira

2004-01-01

This paper presents the findings from a study into managerial competence in the Scottish visitor attraction sector. It provides an insight into the range, diversity and perceived importance of current and future competences highlighting differences based on gender, age, size, level of training and location. Although the main findings reveal a…

Exploring staff perceptions and experiences of volunteers and visitors on the hospital ward at mealtimes using an ethnographic approach.

PubMed

Ottrey, Ella; Palermo, Claire; Huggins, Catherine E; Porter, Judi

2018-04-01

To explore multiple perspectives and experiences of volunteer and visitor involvement and interactions at hospital mealtimes. In addition, to understand how the volunteer and visitor role at mealtimes is perceived within the hospital system. Mealtime assistance can improve patients' food intake and mealtime experience. Barriers to providing mealtime assistance include time pressures, staff availability and inadequate communication. Volunteers and visitors can encourage and assist patients at mealtimes. There is a lack of evidence on the relationship between hospital staff, volunteers and visitors. A qualitative, ethnographic approach. Sixty-seven hours of fieldwork were conducted on two subacute wards within an Australian healthcare network in 2015. Mealtime practices and interactions of hospital staff, volunteers and visitors were observed. Sixty-one staff, volunteers and visitors were interviewed in 75 ethnographic and semi-structured interviews. Data were inductively and thematically analysed. Three key themes emerged as follows: "help"-volunteers and visitors were considered helpful when they assisted patients at mealtimes, supported well-being and aided staff-patient communication; "hindrance"-staff perceived visitors as negative presences when they inhibited patient progress and impacted staff work practices; and "reality of practice"-visiting hours, visitor engagement in patient therapy and communication between staff, volunteers and visitors were important practical considerations of mealtime involvement. The findings show how and why volunteers and visitors can be helpful and unhelpful at hospital mealtimes on subacute wards. More research on the role and contribution of volunteers and visitors on hospital wards will inform future practice in healthcare settings. This healthcare organisation should continue to encourage volunteer and visitor involvement at hospital mealtimes. More effort is needed to educate visitors about patients' therapeutic goals and

26 CFR 31.3306(j)-1 - State, United States, and citizen.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 26 Internal Revenue 15 2010-04-01 2010-04-01 false State, United States, and citizen. 31.3306(j)-1 Section 31.3306(j)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED... SOURCE Federal Unemployment Tax Act (Chapter 23, Internal Revenue Code of 1954) § 31.3306(j)-1 State...

Ribonucleases J1 and J2: two novel endoribonucleases in B.subtilis with functional homology to E.coli RNase E

PubMed Central

Even, Sergine; Pellegrini, Olivier; Zig, Lena; Labas, Valerie; Vinh, Joelle; Bréchemmier-Baey, Dominique; Putzer, Harald

2005-01-01

Many prokaryotic organisms lack an equivalent of RNase E, which plays a key role in mRNA degradation in Escherichia coli. In this paper, we report the purification and identification by mass spectrometry in Bacillus subtilis of two paralogous endoribonucleases, here named RNases J1 and J2, which share functional homologies with RNase E but no sequence similarity. Both enzymes are able to cleave the B.subtilis thrS leader at a site that can also be cleaved by E.coli RNase E. We have previously shown that cleavage at this site increases the stability of the downstream messenger. Moreover, RNases J1/J2 are sensitive to the 5′ phosphorylation state of the substrate in a site-specific manner. Orthologues of RNases J1/J2, which belong to the metallo-β-lactamase family, are evolutionarily conserved in many prokaryotic organisms, representing a new family of endoribonucleases. RNases J1/J2 appear to be implicated in regulatory processing/maturation of specific mRNAs, such as the T-box family members thrS and thrZ, but may also contribute to global mRNA degradation. PMID:15831787

Lakes and ponds recreation management: a state-wide application of the visitor impact management process

Treesearch

Jerry J. Vaske; Rodney R. Zwick; Maureen P. Donnelly

1992-01-01

The Visitor Impact Management (VIM) process is designed to identify unacceptable changes occurring as a result of visitor use and to develop management strategies to keep visitor impacts within acceptable levels. All previous attempts to apply the VIM planning framework have concentrated on specific resources. This paper expands this focus to an entire state. Based on...

Recreation visitor attitudes towards management-ignited prescribed fires in the Bob Marshall Wilderness Complex, Montana

Treesearch

Katie Knotek; Alan E. Watson; William T. Borrie; Joshua G. Whitmore; David Turner

2008-01-01

Research at the Bob Marshall Wilderness Complex in Montana explored differences in recreation visitors' attitudes towards the use of management-ignited prescribed fires in the wilderness. A mail-back survey of visitors (n = 291) during the 2004 season revealed that over half of visitors would accept prescribed fires in wilderness. This support did not vary by...

The generalist Inga subnuda subsp. luschnathiana (Fabaceae): negative effect of floral visitors on reproductive success?

PubMed

Avila, R; Pinheiro, M; Sazima, M

2015-05-01

Inga species are characterised by generalist or mixed pollination system. However, this feature does not enhance reproductive rates in species with very low fruit set under natural conditions. Some ecological and genetic factors are associated with this feature, and to test the effect of massive visits on pollination success in Inga subnuda subsp. luschnathiana, we studied the efficacy of polyads deposited on stigmas of flowers isolated from visitors and polyads exposed to visitors. The proportion of polyads fixed in stigmas decreased after exposure to visitors (24 h) in comparison to stigmas isolated from visitors (hummingbirds, bees, wasps, hawkmoths and bats), and fruit set was very low. Furthermore, nectar production, sugar composition and other floral biology traits were evaluated. Increased nectar production, sugar availability and sucrose dominance during the night indicates adaptation to nocturnal visitors and supports their role as main pollinators; although the brush-flower morphology, time of anthesis, nectar dynamics and chemical composition also allow daytime visitors. Thus the species is an important resource for a diverse group of floral visitors. We conclude that excess visits (diurnal and nocturnal) are responsible for the decrease in fixed polyads in stigmas of I. subnuda subsp. luschnathiana flowers, thus contributing, with others factors, to its low fruit set. Therefore, the generalist pollination system does not result in reproductive advantages because the low fruit set in natural conditions could be the result of a negative effect of visitors/pollinators. © 2014 German Botanical Society and The Royal Botanical Society of the Netherlands.

Visitors' perception of thermal comfort during extreme heat events at the Royal Botanic Garden Melbourne.

PubMed

Lam, Cho Kwong Charlie; Loughnan, Margaret; Tapper, Nigel

2018-01-01

Outdoor thermal comfort studies have mainly examined the perception of local residents, and there has been little work on how those conditions are perceived differently by tourists, especially tourists of diverse origins. This issue is important because it will improve the application of thermal indices in predicting the thermal perception of tourists. This study aims to compare the differences in thermal perception and preferences between local and overseas visitors to the Royal Botanic Garden (RBG) in Melbourne during summer. An 8-day survey was conducted in February 2014 at four sites in the garden (n = 2198), including 2 days with maximum temperature exceeding 40 °C. The survey results were compared with data from four weather stations adjacent to the survey locations. One survey location, 'Fern Gully', has a misting system and visitors perceived the Fern Gully to be cooler than other survey locations. As the apparent temperature exceeded 32.4 °C, visitors perceived the environment as being 'warm' or 'hot'. At 'hot' conditions, 36.8 % of European visitors voted for no change to the thermal conditions, which is considerably higher than the response from Australian visitors (12.2 %) and Chinese visitors (7.5 %). Study results suggest that overseas tourists have different comfort perception and preferences compared to local Australians in hot weather based at least in part on expectations. Understanding the differences in visitors' thermal perception is important to improve the garden design. It can also lead to better tour planning and marketing to potential visitors from different countries.

Visitors' perception of thermal comfort during extreme heat events at the Royal Botanic Garden Melbourne

NASA Astrophysics Data System (ADS)

Lam, Cho Kwong Charlie; Loughnan, Margaret; Tapper, Nigel

2018-01-01

Outdoor thermal comfort studies have mainly examined the perception of local residents, and there has been little work on how those conditions are perceived differently by tourists, especially tourists of diverse origins. This issue is important because it will improve the application of thermal indices in predicting the thermal perception of tourists. This study aims to compare the differences in thermal perception and preferences between local and overseas visitors to the Royal Botanic Garden (RBG) in Melbourne during summer. An 8-day survey was conducted in February 2014 at four sites in the garden ( n = 2198), including 2 days with maximum temperature exceeding 40 °C. The survey results were compared with data from four weather stations adjacent to the survey locations. One survey location, `Fern Gully', has a misting system and visitors perceived the Fern Gully to be cooler than other survey locations. As the apparent temperature exceeded 32.4 °C, visitors perceived the environment as being `warm' or `hot'. At `hot' conditions, 36.8 % of European visitors voted for no change to the thermal conditions, which is considerably higher than the response from Australian visitors (12.2 %) and Chinese visitors (7.5 %). Study results suggest that overseas tourists have different comfort perception and preferences compared to local Australians in hot weather based at least in part on expectations. Understanding the differences in visitors' thermal perception is important to improve the garden design. It can also lead to better tour planning and marketing to potential visitors from different countries.

The University Visitor and University Governance.

ERIC Educational Resources Information Center

Price, David M.; Whalley, Peregrine W. F.

1996-01-01

The role of the University Visitor, whose traditional function is to mediate conflict within a university and contribute to its governance, is examined in the context of Australian higher education. Medieval English ecclesiastical origins of the office are described, and calls for abolition are examined. It is argued that the office should be…

Response to conflict among wilderness visitors

Treesearch

Ingrid Schneider

2000-01-01

Previous conceptual efforts suggest that response to recreational conflict should be framed within an adapted stresscoping response model. An important element in understanding response to conflict is the context of the experience. A basic underlying component of the wilderness experience is privacy, which indicates wilderness visitors are interested in releasing—...

Quantum fluctuations in anisotropic triangular lattices with ferromagnetic and antiferromagnetic exchange

NASA Astrophysics Data System (ADS)

Schmidt, Burkhard; Thalmeier, Peter

2014-05-01

The Heisenberg model on a triangular lattice is a prime example of a geometrically frustrated spin system. However most experimentally accessible compounds have spatially anisotropic exchange interactions. As a function of this anisotropy, ground states with different magnetic properties can be realized. Motivated by recent experimental findings on Cs2CuCl4-xBrx, we discuss the full phase diagram of the anisotropic model with two exchange constants J1 and J2, including possible ferromagnetic exchange. Furthermore a comparison with the related square lattice model is carried out. We discuss the zero-temperature phase diagram, ordering vector, ground-state energy, and ordered moment on a classical level and investigate the effect of quantum fluctuations within the framework of spin-wave theory. The field dependence of the ordered moment is shown to be nonmonotonic with field and control parameter.

The newly expanded KSC Visitors Complex features a new ticket plaza, information center, exhibits an

NASA Technical Reports Server (NTRS)

1999-01-01

The newly added Robot Scouts exhibit at the KSC Visitor Complex is situated next to the Rocket Garden. Part of the $13 million expansion to the Visitor Complex, the exhibit helps describe for visitors the accomplishments of unsung space heroes - space probes - and their role in space exploration. It also includes a display of how data from robotic probes might be used to build a human habitat for Mars. Visitors can witness a simulated Martian sunset. Other additions include a new foyer, films, and an International Space Station-themed ticket plaza, featuring a structure of overhanging solar panels and astronauts performing assembly tasks. The KSC Visitor Complex was inaugurated three decades ago and is now one of the top five tourist attractions in Florida. It is located on S.R. 407, east of I-95, within the Merritt Island National Wildlife Refuge.

Cooperation between bound waters and hydroxyls in controlling isotope-exchange rates

NASA Astrophysics Data System (ADS)

Panasci, Adele F.; McAlpin, J. Gregory; Ohlin, C. André; Christensen, Shauna; Fettinger, James C.; Britt, R. David; Rustad, James R.; Casey, William H.

2012-02-01

Mineral oxides differ from aqueous ions in that the bound water molecules are usually attached to different metal centers, or vicinal, and thus separated from one another. In contrast, for most monomeric ions used to establish kinetic reactivity trends, such as octahedral aquo ions (e.g., Al(H 2O) 63+), the bound waters are closely packed, or geminal. Because of this structural difference, the existing literature about ligand substitution in monomer ions may be a poor guide to the reactions of geochemical interest. To understand how coordination of the reactive functional groups might affect the rates of simple water-exchange reactions, we synthesized two structurally similar Rh(III) complexes, [Rh(phen) 2(H 2O) 2] 3+ [ 1] and [Rh(phen) 2(H 2O)Cl] 2+ [ 2] where (phen) = 1,10-phenanthroline. Complex [ 1] has two adjacent, geminal, bound waters in the inner-coordination sphere and [ 2] has a single bound water adjacent to a bound chloride ion. We employed Rh(III) as a trivalent metal rather than a more geochemically relevant metal like Fe(III) or Al(III) to slow the rate of reaction, which makes possible measurement of the rates of isotopic substitution by simple mass spectrometry. We prepared isotopically pure versions of the molecules, dissolved them into isotopically dissimilar water, and measured the rates of exchange from the extents of 18O and 16O exchange at the bound waters. The pH dependency of rates differ enormously between the two complexes. Pseudo-first-order rate coefficients at 298 K for water exchanges from the fully protonated molecules are close: k0298 = 5 × 10 -8(±0.5 × 10 -8) s -1 for [ 1] and k0298 = 2.5 × 10 -9(±1 × 10 -9) for [ 2]. Enthalpy and entropy activation parameters (Δ H‡ and Δ S‡) were measured to be 119(±3) kJ mol -1, and 14(±1) J mol -1 K -1, respectively for [ 1]. The corresponding parameters for the mono-aquo complex, [ 2], are 132(±3) kJ mol -1 and 41.5(±2) J mol -1 K -1. Rates increase by many orders of magnitude

Evaluating the Uncertainty in Exchange Parameters Determined from Off-Resonance R1ρ Relaxation Dispersion for Systems in Fast Exchange

PubMed Central

Bothe, Jameson R.; Stein, Zachary W.; Al-Hashimi, Hashim M.

2014-01-01

Spin relaxation in the rotating frame (R1ρ) is a powerful NMR technique for characterizing fast microsecond timescale exchange processes directed toward short-lived excited states in biomolecules. At the limit of fast exchange, only kex = k1 + k−1 and Φıx = pGpE(Δω)2 can be determined from R1ρ data limiting the ability to characterize the structure and energetics of the excited state conformation. Here, we use simulations to examine the uncertainty with which exchange parameters can be determined for two state systems in intermediate-to-fast exchange using off-resonance R1ρ relaxation dispersion. R1ρ data computed by solving the Bloch-McConnell equations reveals small but significant asymmetry with respect to offset (R1ρ(ΔΩ) ≠ R1ρ(−ΔΩ)), which is a hallmark of slow-to-intermediate exchange, even under conditions of fast exchange for free precession chemical exchange line broadening (kex/Δω > 10). A grid search analysis combined with bootstrap and Monte-Carlo based statistical approaches for estimating uncertainty in exchange parameters reveals that both the sign and magnitude of Δω can be determined at a useful level of uncertainty for systems in fast exchange (kex/Δω < 10) but that this depends on the uncertainty in the R1ρ data and requires a thorough examination of the multidimensional variation of χ2 as a function of exchange parameters. Results from simulations are complemented by analysis of experimental R1ρ data measured in three nucleic acid systems with exchange processes occurring on the slow (kex/Δω = 0.2; pE = ~ 0.7%), fast (kex/Δω = ~10–16; pE = ~13%) and very fast (kex = 39,000 s−1) chemical shift timescales. PMID:24819426

Influence of benchmarking on wilderness visitor and manager perceptions of campsite conditions

Treesearch

Joseph P. Flood

2003-01-01

The purpose of this study was to compare visitor and manager perceptions of how heavily impacted wilderness campsites and restoration activities to restore them influence quality of visitor experience and opinions of managers. The study conducted in the Mission Mountains Wilderness ("MMW") is located in northwestern Montana and managed by the USDA Forest...

Developing Parenting Skills through Health Visitors: Preliminary Results from an Evaluation Study.

ERIC Educational Resources Information Center

Stevenson, Jim

Preliminary results of a study of the extent to which training health visitors in behavior modification techniques improves the effectiveness of their work with families of young children are presented. A total of 14 health visitors were recruited and assigned to training and delay-of-training groups. Selected from case loads, participating…

A tensor product state approach to spin-1/2 square J1-J2 antiferromagnetic Heisenberg model: evidence for deconfined quantum criticality

NASA Astrophysics Data System (ADS)

Wang, Ling; Gu, Zheng-Cheng; Verstraete, Frank; Wen, Xiang-Gang

We study this model using the cluster update algorithm for tensor product states (TPSs). We find that the ground state energies at finite sizes and in the thermodynamic limit are in good agreement with the exact diagonalization study. At the largest bond dimension available D = 9 and through finite size scaling of the magnetization order near the transition point, we accurately determine the critical point J2c1 = 0 . 53 (1) J1 and the critical exponents β = 0 . 50 (4) . In the intermediate region we find a paramagnetic ground state without any static valence bond solid (VBS) order, supported by an exponentially decaying spin-spin correlation while a power law decaying dimer-dimer correlation. By fitting a universal scaling function for the spin-spin correlation we find the critical exponents ν = 0 . 68 (3) and ηs = 0 . 34 (6) , which is very close to the observed critical exponents for deconfined quantum critical point (DQCP) in other systems. Thus our numerical results strongly suggest a Landau forbidden phase transition from Neel order to VBS order at J2c1 = 0 . 53 (1) J1 . This project is supported by the EU Strep project QUEVADIS, the ERC Grant QUERG, and the FWF SFB Grants FoQuS and ViCoM; and the Institute for Quantum Information and Matter.

Implementation of the court visitor program in a clinical nursing curriculum.

PubMed

Stowell, Jane M; Pihlak, Mary Rose; Matzke, Amanda; O'Keefe, Mary

2013-12-01

The State of Texas has more than 19,000 individuals who lack the physical or mental ability to provide for their need for shelter, financial management, or physical care. These individuals have been designated as wards of the court and placed under guardianship. Texas probate courts appoint individuals known as court visitors to make annual visits to wards of the court to assess their well-being under guardianship. Although the 10 statutory probate courts have court visitor programs, many county courts do not. This article describes the details of a service-learning experience using an online distance educational program to train undergraduate nursing students in a mental health course to become court visitors. This information may be useful to others looking for nontraditional clinical experiences and service-learning opportunities for undergraduate nursing students.

Experiential benefits, place meanings, and environmental setting preferences between proximate and distant visitors to a national scenic trail.

PubMed

Kil, Namyun; Holland, Stephen M; Stein, Taylor V

2015-05-01

Effective management of conserved natural areas often requires a good understanding of recreation visitors who possess various values for those areas. This study examined differences in experiential benefits sought, place meanings, and environmental setting preferences between proximate and distant visitors to a publicly managed national scenic trail, which transects a variety of conserved public lands. Data were collected using on-site post-hike interviews with visitors at low, moderate, and high use trailheads. Proximate visitors sought mental and physical health more strongly than distant visitors, while distant visitors sought environmental exploration more strongly than proximate visitors. No significant difference in family bonding and achievement benefits existed between the two groups. Meanings related to place dependence, family identity, community identity, and place identity were more strongly ascribed by proximate visitors, and both groups rated ecological integrity meanings highly. Distant visitors showed stronger tendencies toward preferring a lesser level of trail development, lower level of encounters with other groups, and higher level of natural landscapes, which indicated an inclination toward natural settings. These findings indicate a managerially relevant role of the degree of proximity to environmental resources on individuals' recreation behaviors, meanings ascribed to the resources and setting conditions. Understanding differences and similarities between groups dichotomized by proximity to natural resources should advance more effective management of recreation and benefit opportunities for diverse visitor groups.

Experiential Benefits, Place Meanings, and Environmental Setting Preferences Between Proximate and Distant Visitors to a National Scenic Trail

NASA Astrophysics Data System (ADS)

Kil, Namyun; Holland, Stephen M.; Stein, Taylor V.

2015-05-01

Effective management of conserved natural areas often requires a good understanding of recreation visitors who possess various values for those areas. This study examined differences in experiential benefits sought, place meanings, and environmental setting preferences between proximate and distant visitors to a publicly managed national scenic trail, which transects a variety of conserved public lands. Data were collected using on-site post-hike interviews with visitors at low, moderate, and high use trailheads. Proximate visitors sought mental and physical health more strongly than distant visitors, while distant visitors sought environmental exploration more strongly than proximate visitors. No significant difference in family bonding and achievement benefits existed between the two groups. Meanings related to place dependence, family identity, community identity, and place identity were more strongly ascribed by proximate visitors, and both groups rated ecological integrity meanings highly. Distant visitors showed stronger tendencies toward preferring a lesser level of trail development, lower level of encounters with other groups, and higher level of natural landscapes, which indicated an inclination toward natural settings. These findings indicate a managerially relevant role of the degree of proximity to environmental resources on individuals' recreation behaviors, meanings ascribed to the resources and setting conditions. Understanding differences and similarities between groups dichotomized by proximity to natural resources should advance more effective management of recreation and benefit opportunities for diverse visitor groups.

Perception Modelling of Visitors in Vargas Museum Using Agent-Based Simulation and Visibility Analysis

NASA Astrophysics Data System (ADS)

Carcellar, B. G., III

2017-10-01

Museum exhibit management is one of the usual undertakings of museum facilitators. Art works must be strategically placed to achieve maximum viewing from the visitors. The positioning of the artworks also highly influences the quality of experience of the visitors. One solution in such problems is to utilize GIS and Agent-Based Modelling (ABM). In ABM, persistent interacting objects are modelled as agents. These agents are given attributes and behaviors that describe their properties as well as their motion. In this study, ABM approach that incorporates GIS is utilized to perform analyticcal assessment on the placement of the artworks in the Vargas Museum. GIS serves as the backbone for the spatial aspect of the simulation such as the placement of the artwork exhibits, as well as possible obstructions to perception such as the columns, walls, and panel boards. Visibility Analysis is also done to the model in GIS to assess the overall visibility of the artworks. The ABM is done using the initial GIS outputs and GAMA, an open source ABM software. Visitors are modelled as agents, moving inside the museum following a specific decision tree. The simulation is done in three use cases: the 10 %, 20 %, and 30 % chance of having a visitor in the next minute. For the case of the said museum, the 10 % chance is determined to be the closest simulation case to the actual and the recommended minimum time to achieve a maximum artwork perception is 1 hour and 40 minutes. Initial assessment of the results shows that even after 3 hours of simulation, small parts of the exhibit show lack of viewers, due to its distance from the entrance. A more detailed decision tree for the visitor agents can be incorporated to have a more realistic simulation.

Tabula diptycha: Differential HIV knowledge, stigma, and intended behavioural outcomes amongst visitors at Vietnam's Pain and Hope exhibition

PubMed Central

Nambiar, Devaki; Nguyen, Mai Huong; Giang, Le Minh; Hirsch, Jennifer

2013-01-01

Stigma reduction efforts in Vietnam have been encumbered by contradictory and dynamic views of People Living With HIV (PLWH) and the epidemic over the past two decades. World AIDS Day 2010 saw the launch of Pain and Hope, a museum exhibition showcasing the lives and experiences of Vietnamese People Living with AIDS at the Vietnam Museum of Ethnology (VME). Between December 2010 and May 2011, a random sample of visitors completed exit surveys regarding attitudes towards the exhibition and Vietnamese living with HIV/AIDS. The survey sought to determine what kind of visitors the museum and exhibition attracted, and the stigma-related impacts of this kind of exposure and parasocial contact. Of 2,500 Vietnamese visitors randomly selected, 852 completed the computer surveys (response rate of 34.1%), 92.3% of whom had seen Pain and Hope. We found two sub-strata or types of visitors attending the exhibition, with varying demographic characteristics, HIV-related knowledge, some differences in stigma ideation, and clear differences in intended behaviours specifically attributable to the exhibition. Social desirability biases notwithstanding, there has emerged a diptych typology of visitors to the VME, for whom the experience of the exhibition is likely interacting with divergent prior knowledge, experiences, interests and motivations. PMID:22974183

Perceived effects of setting attributes on visitor experiences in wilderness: Variation with situational context and visitor characteristics

Treesearch

David N. Cole; Troy E. Hall

2009-01-01

Understanding how setting attributes influence the nature of the visitor experience is crucial to effective recreation management. Highly influential attributes are useful indicators to monitor within a planning framework, such as Limits of Acceptable Change. This study sought to identify the setting attributes perceived to have the most profound effect on the ability...

Self-Regulated Learning in the Museum: Understanding the Relationship of Visitor's Goals, Learning Strategies, and Appraisals

ERIC Educational Resources Information Center

Zhou, Ji; Urhahne, Detlef

2017-01-01

Self-regulated learning (SRL) in the museum was explored by 2 investigations. The first one investigated 233 visitors on their goals and intended learning strategies by questionnaire before they visited the science museum. Results indicated visitors' learning goals can predict their intended deep-learning strategy. Moreover, visitors can be…

A health visitor for older people in an accident and emergency department.

PubMed

Bridges, J; Meyer, J; McMahon, K; Bentley, J; Winter, J

2000-02-01

Published studies indicate that older people have special needs on discharge from accident and emergency (A&E) departments that are not always fully met. The literature reflects that although a significant proportion of older people have a decrease in functional independence and an increased need for services following discharge from A&E, social and functional assessment by A&E staff can be inadequate, as can the arrangement of follow-up community services. As part of a wider study into the organization of care for older people in A&E, a health visitor for older people was funded to work part-time in the A&E department of a large NHS Trust. The health visitor identified potential clients through reviewing the A&E documentation of patients aged 75 years or over discharged directly from A&E. Telephone calls or home visits were used to follow up those individuals deemed to be vulnerable by the health visitor. Interventions included health education, referral to other agencies and patient or family counselling. None of the clients followed up by the health visitor (n = 212) had been referred by A&E to a specialist in gerontology, which suggests that these clients would otherwise not have received the potential benefit of specialist intervention. The pilot study described here highlights a number of practical issues in relation to the health visitor post for older people in A&E, including the importance of dedicated office space and access to a telephone. Data collected during the study, plus the positive evaluation of the role by a small group of A&E staff confirm the claims made in other studies (e.g. Runciman et al, 1996) that health visitors for older people may be of value in meeting the post-discharge needs of these people.

Relationships between trip motivations and selected variables among Allegheny National forest visitors

Treesearch

Alan R. Graefe; Brijesh Thapa; John J. Confer; James D. Absher

2000-01-01

To meet visitors’ needs, managers must understand the motivations driving visitors to wilderness areas. This paper compares the motivations of different segments of Allegheny National Forest users. Factor analysis identified 5 motivation factors (social, escape, fun, nature and learning), with two items retained as single item dimensions (close to home and challenge)....

Minimising visitor impacts to protected areas: The efficacy of low impact education programmes

USGS Publications Warehouse

Marion, J.L.; Reid, S.E.

2007-01-01

Protected area managers, tourism providers, and other organisations commonly employ education programmes to address visitation-related impairment of natural and cultural resources, social conditions, and neighbouring communities. These programmes have different names (Leave No Trace, Codes of Conduct, Environmental Guidelines for Tourists) but share common objectives: to sustain opportunities for high quality visitor experiences while avoiding or minimising associated negative impacts to protected area resources, visitor experiences, and park neighbours. Theoretical and empirical research studies in the United States are reviewed to evaluate the efficacy of educational efforts that seek to encourage adoption of low impact behaviours. Findings reveal that most of the visitor education efforts evaluated did effectively alter visitor knowledge, behaviour and/or resource and social conditions in the intended direction. These findings, including discussions of message content, delivery, audience characteristics and theoretical grounding, provide insights for improving the efficacy of future educational efforts.

Thai visitors' expectations and experiences of explainer interaction within a science museum context.

PubMed

Kamolpattana, Supara; Chen, Ganigar; Sonchaeng, Pichai; Wilkinson, Clare; Willey, Neil; Bultitude, Karen

2015-01-01

In Western literature, there is evidence that museum explainers offer significant potential for enhancing visitors' learning through influencing their knowledge, content, action, behaviour and attitudes. However, little research has focused on the role of explainers in other cultural contexts. This study explored interactions between visitors and museum explainers within the setting of Thailand. Two questionnaires were distributed to 600 visitors and 41 museum explainers. The results demonstrated both potential similarities and differences with Western contexts. Explainers appeared to prefer didactic approaches, focussing on factual knowledge rather than encouraging deep learning. Two-way communication, however, appeared to be enhanced by the use of a 'pseudo-sibling relationship' by explainers. Traditional Thai social reserve was reduced through such approaches, with visitors taking on active learning roles. These findings have implications for training museum explainers in non-Western cultures, as well as museum communication practice more generally. © The Author(s) 2014.

Tuberculosis among nonimmigrant visitors to US Military installations.

PubMed

Aaron, Christopher L; Fotinos, Meletios J; West, Kevin B; Goodwin, Donald J; Mancuso, James D

2013-03-01

Nonimmigrant visitors are not required to be evaluated for tuberculosis (TB) before entering the country. Little literature exists describing the challenges of TB control among this demographic. This report reviews the challenges in managing TB in this population on U.S. military installations. Six cases were identified from reportable medical event reports. Information was obtained from public health personnel via phone interviews. Verified cases from 2004 to 2011 were included. Challenges were congruent among locations including: lack of procedures to screen for infection and disease among individuals at time of entry allowing one case to be admitted with acquired immunodeficiency syndrome and another concurrently on treatment for active TB; delays in the diagnosis of active TB as median time from entry to diagnosis was 62 days; and the need to conduct an effective contact investigation as the mean contact index was 77 including 1 secondary case of active TB. These cases emphasize the need for screening for TB in visitors from high-risk countries at time of entry, prompt diagnosis and treatment if found, procedures for evaluation of contacts, and interjurisdictional cooperation in large contact investigations. These challenges are common to nonimmigrants in both military and civilian settings. Reprint & Copyright © 2013 Association of Military Surgeons of the U.S.

The newly expanded KSC Visitors Complex features a new ticket plaza, information center, exhibits an

NASA Technical Reports Server (NTRS)

1999-01-01

The KSC Visitor Complex welcomes more than 2.75 million visitors each year. Featured are bus tours of the space center with up- close views of Space Shuttle launch facilities and International Space Station processing. The Visitor Complex has recently undergone a $13 million expansion, with new exhibits, films, and an International Space Station-themed ticket plaza, featuring a structure of overhanging solar panels and astronauts performing assembly tasks. The KSC Visitor Complex was inaugurated three decades ago and is now one of the top five tourist attractions in Florida. It is located on S.R. 407, east of I-95, within the Merritt Island National Wildlife Refuge.

Performance analysis of a miniature Joule-Thomson cryocooler with and without the distributed J-T effect

NASA Astrophysics Data System (ADS)

Damle, Rashmin; Atrey, Milind

2015-12-01

Cryogenic temperatures are obtained with Joule-Thomson (J-T) cryocoolers in an easier way as compared to other cooling techniques. Miniature J-T cryocoolers are often employed for cooling of infrared sensors, cryoprobes, biological samples, etc. A typical miniature J-T cryocooler consists of a storage reservoir/compressor providing the high pressure gas, a finned tube recuperative heat exchanger, an expansion valve/orifice, and the cold end. The recuperative heat exchanger is indispensable for attaining cryogenic temperatures. The geometrical parameters and the operating conditions of the heat exchanger drastically affect the cryocooler performance in terms of cool down time and cooling effect. In the literature, the numerical models for the finned recuperative heat exchanger have neglected the distributed J-T effect. The distributed J-T effect accounts for the changes in enthalpy of the fluid due to changes of pressure in addition to those due to changes of temperature. The objective of this work is to explore the distributed J-T effect and study the performance of a miniature J-T cryocooler with and without the distributed J-T effect. A one dimensional transient model is employed for the numerical analysis of the cryocooler. Cases with different operating conditions are worked out with argon and nitrogen as working fluids.

Validation of the Visitor and Resident Framework in an E-Book Setting

ERIC Educational Resources Information Center

Engelsmann, Hazel C.; Greifeneder, Elke; Lauridsen, Nikoline D.; Nielsen, Anja G.

2014-01-01

Introduction: By applying the visitor and resident framework on e-book usage, the article explores whether the concepts of a resident and a visitor can help to explain e-book use, and can help to gain a better insight into users' motivations for e-book use. Method: A questionnaire and semi-structured interviews were conducted with users of the…

A Study of Use of the New York State Library by Visitors.

ERIC Educational Resources Information Center

Lipetz, Ben-Ami

Based on data gathered during a full 5-day, 40-hour week of visiting time, this study determined various characteristics of visitors to the New York State Library (NYSL) main facility; e.g., traffic rates, user intent, and user status. Visitors exiting the library were counted, short interviews were conducted with 25 percent of the total visitors…

Perceptions of and preferences for fee program dollar utilization among wilderness visitors

Treesearch

Ingrid Schneider; Christopher LaPointe; Sharon Stievater

2000-01-01

The purpose of this study was to ascertain visitor perceptions of a fee program and preferences for management utilization of the fee dollars. Differences in program perceptions were examined both by activity and activity style. Wilderness visitors in the American Southwest were surveyed on-site during the 1997–1998 season. Overall, respondents moderately agreed that...

Recreation visitor research: studies of diversity

Treesearch

Deborah J. Chavez; Patricia L. Winter; James D. Absher

2008-01-01

In 1987, the Pacific Southwest Research Station (PSW) of the U.S. Department of Agriculture Forest Service (USFS) chartered a research work unit to examine outdoor recreation in the wildland-urban interface. The new work unit was established to address the needs of the increasingly diverse recreation visitors to national forests. The four forest supervisors in southern...

Midwives' and health visitors' collaborative relationships: A systematic review of qualitative and quantitative studies.

PubMed

Aquino, Maria Raisa Jessica Ryc V; Olander, Ellinor K; Needle, Justin J; Bryar, Rosamund M

2016-10-01

Interprofessional collaboration between midwives and health visitors working in maternal and child health services is widely encouraged. This systematic review aimed to identify existing and potential areas for collaboration between midwives and health visitors; explore the methods through which collaboration is and can be achieved; assess the effectiveness of this relationship between these groups, and ascertain whether the identified examples of collaboration are in line with clinical guidelines and policy. A narrative synthesis of qualitative and quantitative studies. Fourteen electronic databases, research mailing lists, recommendations from key authors and reference lists and citations of included papers. Papers were included if they explored one or a combination of: the areas of practice in which midwives and health visitors worked collaboratively; the methods that midwives and health visitors employed when communicating and collaborating with each other; the effectiveness of collaboration between midwives and health visitors; and whether collaborative practice between midwives and health visitors meet clinical guidelines. Papers were assessed for study quality. Eighteen papers (sixteen studies) met the inclusion criteria. The studies found that midwives and health visitors reported valuing interprofessional collaboration, however this was rare in practice. Findings show that collaboration could be useful across the service continuum, from antenatal care, transition of care/handover, to postnatal care. Evidence for the effectiveness of collaboration between these two groups was equivocal and based on self-reported data. In relation, multiple enablers and barriers to collaboration were identified. Communication was reportedly key to interprofessional collaboration. Interprofessional collaboration was valuable according to both midwives and health visitors, however, this was made challenging by several barriers such as poor communication, limited resources, and

Temperature dependence of the exchange coupling in the Fe(001) whisker/11 ML Cr/20 ML Fe structure

NASA Astrophysics Data System (ADS)

From, M.; Liao, L. X.; Cochran, J. F.; Heinrich, B.

1994-05-01

The exchange coupling between iron layers separated by 11 monolayers (ML) of Cr(001) has been investigated using a structure in which the Cr(001) was grown on a bulk iron whisker Fe(001) surface at a temperature of approximately 300 °C. This temperature was selected to produce near optimum smoothness of the Cr layer. The Cr(001) deposition was followed by the deposition of 20 ML of Fe(001) at room temperature, and by the deposition of a 20 ML Au(001) protective layer. The frequencies corresponding to the magnetic excitations in this structure were measured by means of Brillouin light scattering (BLS). One of the observed frequencies corresponds to a surface mode in the bulk iron whisker. Another observed frequency corresponds to the lowest lying precessional mode of the magnetization in the 20 ML thick Fe(001) thin film. Typically, the thin film frequency exhibits a dependence on applied magnetic field that displays two cusps. The positions of the cusps are dependent on the exchange coupling between the 20 ML Fe film and the bulk iron substrate. The surface mode frequency increases monotonically with increasing field over most of the field range investigated. However, at the field corresponding to the low field cusp in the thin film frequency, the surface mode frequency undergoes an abrupt jump in magnitude. We have used the position of the cusps in the thin film data to deduce values for the bilinear, J1, and biquadratic, J2, coupling terms, where the coupling energy is written in the form EAB=-J1 cos(Δφ)+J2 cos2(Δφ); Δφ is the angle between the thin film and bulk iron magnetizations. Measurements of J1 and J2 have been carried out at six temperatures that span the range 100-350 K. Both J1 and J2 are found to depend strongly on temperature. The data are well described by the quadratic expression J2=-0.54+1.46 ×‖J1‖-0.52×J12, where J1 and J2 are expressed in erg/cm2. The large nonzero intercept and the linear term probably imply a significant intrinsic

22 CFR 62.16 - Employment.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Employment. 62.16 Section 62.16 Foreign... § 62.16 Employment. (a) An exchange visitor may receive compensation from the sponsor or the sponsor's appropriate designee for employment when such activities are part of the exchange visitor's program. (b) An...

Feeding live prey to zoo animals: response of zoo visitors in Switzerland.

PubMed

Cottle, Lauren; Tamir, Dan; Hyseni, Mimoza; Bühler, Dominique; Lindemann-Matthies, Petra

2010-01-01

In summer 2007, with the help of a written questionnaire, the attitudes of more than 400 visitors to the zoological garden of Zurich, Switzerland, toward the idea of feeding live insects to lizards, live fish to otters, and live rabbits to tigers were investigated. The majority of Swiss zoo visitors agreed with the idea of feeding live prey (invertebrates and vertebrates) to zoo animals, both off- and on-exhibit, except in the case of feeding live rabbits to tigers on-exhibit. Women and frequent visitors of the zoo disagreed more often with the on-exhibit feeding of live rabbits to tigers. Study participants with a higher level of education were more likely to agree with the idea of feeding live invertebrates and vertebrates to zoo animals off-exhibit. In comparison to an earlier study undertaken in Scotland, zoo visitors in Switzerland were more often in favor of the live feeding of vertebrates. Feeding live prey can counter the loss of hunting skills of carnivores and improve the animals' well-being. However, feeding enrichments have to strike a balance between optimal living conditions of animals and the quality of visitor experience. Our results show that such a balance can be found, especially when live feeding of mammals is carried out off-exhibit. A good interpretation of food enrichment might help zoos to win more support for the issue, and for re-introduction programs and conservation. (c) 2009 Wiley-Liss, Inc.

26 CFR 1.1033(e)-1 - Sale or exchange of livestock solely on account of drought.

Code of Federal Regulations, 2012 CFR

2012-04-01

... of drought. 1.1033(e)-1 Section 1.1033(e)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF... § 1.1033(e)-1 Sale or exchange of livestock solely on account of drought. (a) The sale or exchange of... applicable if the sale or exchange of such livestock by the taxpayer is solely on account of drought. Section...

26 CFR 1.1033(e)-1 - Sale or exchange of livestock solely on account of drought.

Code of Federal Regulations, 2011 CFR

2011-04-01

... of drought. 1.1033(e)-1 Section 1.1033(e)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF... § 1.1033(e)-1 Sale or exchange of livestock solely on account of drought. (a) The sale or exchange of... applicable if the sale or exchange of such livestock by the taxpayer is solely on account of drought. Section...

26 CFR 1.1033(e)-1 - Sale or exchange of livestock solely on account of drought.

Code of Federal Regulations, 2014 CFR

2014-04-01

... of drought. 1.1033(e)-1 Section 1.1033(e)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF... § 1.1033(e)-1 Sale or exchange of livestock solely on account of drought. (a) The sale or exchange of... applicable if the sale or exchange of such livestock by the taxpayer is solely on account of drought. Section...

26 CFR 1.1033(e)-1 - Sale or exchange of livestock solely on account of drought.

Code of Federal Regulations, 2013 CFR

2013-04-01

... of drought. 1.1033(e)-1 Section 1.1033(e)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF... § 1.1033(e)-1 Sale or exchange of livestock solely on account of drought. (a) The sale or exchange of... applicable if the sale or exchange of such livestock by the taxpayer is solely on account of drought. Section...

Dynamical structure factor of the J1-J2 Heisenberg model in one dimension: The variational Monte Carlo approach

NASA Astrophysics Data System (ADS)

Ferrari, Francesco; Parola, Alberto; Sorella, Sandro; Becca, Federico

2018-06-01

The dynamical spin structure factor is computed within a variational framework to study the one-dimensional J1-J2 Heisenberg model. Starting from Gutzwiller-projected fermionic wave functions, the low-energy spectrum is constructed from two-spinon excitations. The direct comparison with Lanczos calculations on small clusters demonstrates the excellent description of both gapless and gapped (dimerized) phases, including incommensurate structures for J2/J1>0.5 . Calculations on large clusters show how the intensity evolves when increasing the frustrating ratio and give an unprecedented accurate characterization of the dynamical properties of (nonintegrable) frustrated spin models.

17 CFR 240.15b9-1 - Exemption for certain exchange members.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 17 Commodity and Securities Exchanges 3 2010-04-01 2010-04-01 false Exemption for certain exchange members. 240.15b9-1 Section 240.15b9-1 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED) GENERAL RULES AND REGULATIONS, SECURITIES EXCHANGE ACT OF 1934 Rules and Regulations...

Perceptions and cognitions from an interpretive talk: comparing visitor responses to expert reviews

Treesearch

Lisa K. Machnik; Brett A. Wright; William E. Hammitt

2007-01-01

Interpretation is a communication process which aims to reveal meanings and encourage relationships between visitors and natural or cultural resources rather than simply communicating factual information (Larsen 2003, National Association for Interpretation 2000, Tilden 1957). Effective interpretation offers visitors opportunities to connect with and perceive the...

75 FR 8310 - Defense Acquisition University (DAU) Board of Visitors (BoV) Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-24

... DEPARTMENT OF DEFENSE Office of the Secretary Defense Acquisition University (DAU) Board of Visitors (BoV) Meeting AGENCY: Defense Acquisition University, DoD. ACTION: Meeting notice. SUMMARY: The next meeting of the Defense Acquisition University (DAU) Board of Visitors (BoV) will be held at DAU...

26 CFR 1.1031(d)-1 - Property acquired upon a tax-free exchange.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 26 Internal Revenue 11 2013-04-01 2013-04-01 false Property acquired upon a tax-free exchange. 1... Property acquired upon a tax-free exchange. (a) If, in an exchange of property solely of the type described... provision of a prior revenue law, on account of the receipt of money in the transaction, the basis of the...

26 CFR 1.1031(d)-1 - Property acquired upon a tax-free exchange.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 26 Internal Revenue 11 2010-04-01 2010-04-01 true Property acquired upon a tax-free exchange. 1... upon a tax-free exchange. (a) If, in an exchange of property solely of the type described in section... prior revenue law, on account of the receipt of money in the transaction, the basis of the property...

26 CFR 1.1031(d)-1 - Property acquired upon a tax-free exchange.

Code of Federal Regulations, 2014 CFR

2014-04-01

... 26 Internal Revenue 11 2014-04-01 2014-04-01 false Property acquired upon a tax-free exchange. 1... Property acquired upon a tax-free exchange. (a) If, in an exchange of property solely of the type described... provision of a prior revenue law, on account of the receipt of money in the transaction, the basis of the...

26 CFR 1.1031(d)-1 - Property acquired upon a tax-free exchange.