bluuebunny/crossref_metadata_2025_split huggingface dataset:
Older people and ill fitting shoes
Authors: Burns S L , Leese G P , McMurdo M E T 
Published: July 2002

Abstract

Background
Foot health is an important issue in older people. Inappropriate shoes increase the risk of callous and ulcer formation, as well as increasing the risk of falls. There are no data defining the size of this problem.

Objective
The aim of the study was to investigate the proportion of elderly people on a general rehabilitation ward wearing incorrectly sized shoes and to look for the presence of complications.

Methods
Sixty five consecutive patients (mental state questionnaire score &gt;6) admitted to a rehabilitation ward had their foot length and width measured, and the size of their current footwear recorded. Sensation was tested with a standard 10 g monofilament. The presence of ulceration was noted. Foot pain was recorded by the patient on a visual analogue scale. Any history of diabetes mellitus, peripheral vascular disease, or peripheral neuropathy was noted.

Results
The median age of the subjects was 82 (range 64–93). Six (9%) had a history of diabetes, seven (11%) had symptomatic peripheral vascular disease, and 17 (26%) had sensory impairment. Ten patients (15%) had foot ulceration present, and 47 patients (72%) had ill fitting shoes (a discrepancy in length of more than half a British shoe size fitting or more than one British width fitting, 7 mm).
Incorrect shoe length was significantly associated with the presence of ulceration (odds ratio (OR) = 10.04, p = 0.016). Presence of ulceration was significantly associated with a history of peripheral vascular disease (OR = 11.56, p = 0.008). Pain was significantly associated with incorrect shoe length (p = 0.0238) and with sensory impairment (p = 0.0314).

Conclusion
Most older people on a rehabilitation ward wore ill fitting shoes. An association was found between ill fitting shoes and self reported pain, and between ill fitting shoes and ulcer formation.
A straightforward assessment of footwear in older people could improve comfort and avoid preventable foot disorders.
A prescription for health: a primary care based intervention to maintain the non-smoking status of young people
Authors: Fidler Wendy , Lambert Trevor W 
Published: July 2002

OBJECTIVESTo evaluate the effectiveness of primary health care teams in maintaining a group of young people aged 10–15 years as non-smokers.DESIGNRandomised controlled trial using postal questionnaires.SETTINGOxfordshire, UK.SUBJECTS2942 young people who were initially self declared non-smokers.INTERVENTIONInformation about smoking, sent under signature of the subject's general practitioner, certificates and posters intended to reinforce non-smoking behaviour.MAIN OUTCOME MEASURESChanges in smoking behaviour, attitudes measured after one year.RESULTSAfter a year, smoking uptake was 7.8% in the control group compared with 5.1% in the intervention group (odds ratio (OR) 1.6, 95% confidence interval (CI) 1.1 to 2.2). Among boys the corresponding results were 5.2% and 2.4% (OR 2.3, 95% CI 1.2 to 4.6), and among girls 10.0% and 7.5% (OR 1.4, 95% CI 0.9 to 2.1). Among boys aged 14–15 the uptake rate was 12.8% in the control group compared with 5.4% in the intervention group. However, among girls of the same age the intervention was less effective, with smoking uptake of 15.1% in the control group and 12.8% in the intervention group. The intervention was more effective among young people whose initial attitudes identified them as definite non-smokers than those who were potential smokers.CONCLUSIONSThe intervention substantially reduced smoking uptake among the young people, particularly boys. Primary health care teams can play an important role in maintaining the non-smoking status of their young patients. Confidential postal contact from the doctor direct to the young person at home is influential and cost-effective.
Responses to tobacco control policies among youth
Authors: Crawford M A , Balch G I , Mermelstein R ,   The Tobacco Control Network Writing Group
Published: July 2002

Objective: Explore adolescents' response to current and potential tobacco control policy issues.Design: The 13 site Tobacco Control Network (TCN), sponsored by the Centers for Disease Control and Prevention, conducted 129 sex and ethnic homogeneous focus groups.Participants: 785 white, African American, Asian American/Pacific Islander, American Indian, and Hispanic adolescents who were primarily smokers from rural, urban, and suburban locations across the USA.Main outcome measures: Awareness, knowledge, opinions, and behaviour regarding laws and rules, prices, cigarette ingredients, and warning labels.Results: Teenagers were generally familiar with laws and rules about access and possession for minors, but believed them ineffective. They were knowledgeable about prices, and reported that a sharp and sudden increase could lead them to adjust their smoking patterns but could also have negative consequences. They found a list of chemical names of cigarette ingredients largely meaningless, but believed that disclosing and publicising their common uses could be an effective deterrent, especially for those who were not yet smoking. They were aware of current warning labels, but considered them uninformative and irrelevant.Conclusions: Understanding teenagers' attitudes and behaviours before implementing policies that will affect them will likely increase their effectiveness. Disclosing and publicising the chemical contents of cigarettes, and increasing prices quickly and sharply, are potentially effective areas for policy change to impact adolescent tobacco use.
A FAST AND SECURE IMAGE HIDING SCHEME BASED ON LSB SUBSTITUTION
Authors: CHANG CHIN-CHEN , LIN MIN-HUI , HU YU-CHEN 
Published: July 2002

The improving technology and the ubiquity of the Internet have allowed more and more people to transmit data via the Internet. The contents of the transmission can be in the form of words, voices, images, or even computer animation. To protect the contents from interceptors' attention, the image hiding technology thus emerged. Some contents transmitted via the Internet can be confidential data such as highly valued product design blueprints or war plans, so it is important to pay more attention to the security of the transmitted data, or what we called secret image in this paper. The point of this paper is to enhance the security of the secret image without causing too much distortion to the host image and in the meantime to shorten the image hiding process time. For better protection, we adopted encryption process DES. In addition, we used greedy algorithm to shorten hiding process and to protect the host image from being severely distorted. To test our proposed method to see whether it indeed achieved its objective, we used two sets of images in our experiment. The results of the experiments showed, when k = 2, our PSNR is close to that of Wang et al.'s optimal LSB substitution, but is not significantly different from that of simple LSB substitution. However, our method took approximately only 1/7 of the time consumed by Wang et al. When k = 3, our PSNR is significantly higher than that of simple LSB substitution. The experimental results confirmed that our method could effectively protect host image quality and shorten the overall hiding time when it enhanced the security of the secret image.
SPEEDING UP MATERIALIZED VIEW SELECTION IN DATA WAREHOUSES USING A RANDOMIZED ALGORITHM
Authors: LEE MINSOO , HAMMER JOACHIM 
Published: July 2002

A data warehouse stores information that is collected from multiple, heterogeneous information sources for the purpose of complex querying and analysis. Information in the warehouse is typically stored in the form of materialized views, which represent pre-computed portions of frequently asked queries. One of the most important tasks when designing a warehouse is the selection of materialized views to be maintained in the warehouse. The goal is to select a set of views in such a way as to minimize the total query response time over all queries, given a limited amount of time for maintaining the views (maintenance-cost view selection problem). In this paper, we propose an efficient solution to the maintenance-cost view selection problem using a genetic algorithm for computing a near-optimal set of views. Specifically, we explore the maintenance-cost view selection problem in the context of OR view graphs. We show that our approach represents a dramatic improvement in time complexity over existing search-based approaches using heuristics. Our analysis shows that the algorithm consistently yields a solution that lies within 10% of the optimal query benefit while at the same time exhibiting only a linear increase in execution time. We have implemented a prototype version of our algorithm which is used to simulate the measurements used in the analysis of our approach.
Detection of linear errors via domain testing
Authors: Zeil Steven J. , Afifi Faten H. , White Lee J. 
Published: July 2002

Domain testing attempts to find errors in the numeric expressions affecting the flow of control through a program. Intuitively, domain testing provides a systematic form of boundary value testing for the conditional statements within a program. Several forms of domain testing have been proposed, all dealing with the detection of linear errors in linear functions.
Perturbation analysis has been previously developed as a measure of the volume of faults, from within a selected space of possible faults, left undetected by a test set. It is adapted here to errors and error spaces. The adapted form is used to show that the different forms of domain testing are closer in error detection ability than had been supposed. They may all be considered effective for finding linear errors in linear predicate functions. A simple extension is proposed, which allows them to detect linear errors in nonlinear predicate functions using only a single additional test point.
An efficient representation for sparse sets
Authors: Briggs Preston , Torczon Linda 
Published: July 2002

Sets are a fundamental abstraction widely used in programming. Many representations are possible, each offering different advantages. We describe a representation that supports constant-time implementations of
clear-set, add-member,
and
delete-member
. Additionally, it supports an efficient
forall
iterator, allowing enumeration of all the members of a set in time proportional to the cardinality of the set.

We present detailed comparisons of the costs of operations on our representation and on a bit vector representation. Additionally, we give experimental results showing the effectiveness of our representation in a practical application: construction of an interference graph for use during graph-coloring register allocation.
While this representation was developed to solve a specific problem arising in register allocation, we have found it useful throughout our work, especially when implementing efficient analysis techniques for large programs. However, the new representation is not a panacea. The operations required for a particular set should be carefully considered before this representation, or any other representation, is chosen.
CYTOSKELETALPERSPECTIVES ONROOTGROWTH ANDMORPHOGENESIS
Authors: Barlow Peter W. , Baluška František 
Published: July 2002

▪ Abstract  Growth and development of all plant cells and organs relies on a fully functional cytoskeleton comprised principally of microtubules and microfilaments. These two polymeric macromolecules, because of their location within the cell, confer structure upon, and convey information to, the peripheral regions of the cytoplasm where much of cellular growth is controlled and the formation of cellular identity takes place. Other ancillary molecules, such as motor proteins, are also important in assisting the cytoskeleton to participate in this front-line work of cellular development.Roots provide not only a ready source of cells for fundamental analyses of the cytoskeleton, but the formative zone at their apices also provides a locale whereby experimental studies can be made of how the cytoskeleton permits cells to communicate between themselves and to cooperate with growth-regulating information supplied from the apoplasm.
Evolutionary Physiology
Authors: Feder Martin E. , Bennett Albert F. , Huey Raymond B. 
Published: July 2002

▪ Abstract  Evolutionary physiology represents an explicit fusion of two complementary approaches: evolution and physiology. Stimulated by four major intellectual and methodological developments (explicit consideration of diverse evolutionary mechanisms, phylogenetic approaches, incorporation of the perspectives and tools of evolutionary genetics and selection studies, and generalization of molecular techniques to exotic organisms), this field achieved prominence during the past decade. It addresses three major questions regarding physiological evolution: (a) What are the historical, ecological, and phylogenetic patterns of physiological evolution? (b) How important are and were each of the known evolutionary processes (natural selection, sexual selection, drift, constraint, genetic coupling/hitchhiking, and others) in engendering or limiting physiological evolution? and (c) How do the genotype, phenotype, physiological performance, and fitness interact in influencing one another's future values? To answer these questions, evolutionary physiology examines extant and historical variation and diversity, standing genetic and phenotypic variability in populations, and past and ongoing natural selection in the wild. Also, it manipulates genotypes, phenotypes, and environments of evolving populations in the laboratory and field. Thus, evolutionary physiology represents the infusion of paradigms, techniques, and approaches of evolutionary biology, genetics, and systematics into physiology. The reciprocal infusion of physiological approaches into evolutionary biology and systematics can likewise have great value and is a future goal.…each level [of biological integration] offers unique problems and insights, and….each level finds its explanations of mechanism in the levels below, and its significance in the levels above. George A. Bartholomew ( 7 , p. 8)
Bacterial Cell Division
Authors: Rothfield L , Justice S , García-Lara J 
Published: July 2002

▪ Abstract  Formation of the bacterial division septum is catalyzed by a number of essential proteins that assemble into a ring structure at the future division site. Assembly of proteins into the cytokinetic ring appears to occur in a hierarchial order that is initiated by the FtsZ protein, a structural and functional analog of eukaryotic tubulins. Placement of the division site at its correct location in Escherichia coli requires a division inhibitor (MinC), that is responsible for preventing septation at unwanted sites near the cell poles, and a topological specificity protein (MinE), that forms a ring at midcell and protects the midcell site from the division inhibitor. However, the mechanism responsible for identifying the position of the midcell site or the polar sites used for spore septum formation is still unclear. Regulation of the division process and its coordination with other cell cycle events, such as chromosome replication, are poorly understood. However, a protein has been identified in Caulobacter (CtrA) that regulates both the initiation of chromosome regulation and the transcription of ftsZ, and that may play an important role in the coordination process.
Water Reclamation and Unrestricted Nonpotable Reuse: A New Tool in Urban Water Management
Authors: Okun Daniel A. 
Published: July 2002

▪ Abstract  Growing urbanization accompanying growing population is increasing the demand for water supply in communities throughout the world. Water resources for many cities are already proving inadequate. Additional water resources are inherently more costly and are often not available because other communities and/or land owners have the water rights. Although conservation, particularly through demand management, may delay the need for additional sources for a short period, the need is inevitable. One approach that has been found to provide substantial additional water for communities is the reclamation of wastewaters produced by the communities themselves for unrestricted nonpotable purposes, such as for landscape and market crop irrigation, industry, cooling towers, air conditioning, toilet flushing, construction, vehicle washing, and environmental enhancement. This is done by providing dual distribution systems. Nonpotable reuse is already widely practiced despite the fact that the reclaimed water distribution systems needed to be installed in existing communities. Inasmuch as additional water is needed for growing populations, the costs would be substantially reduced if the two systems were to be built at the same time in the newly developing areas. Reuse of reclaimed water for potable purposes may be feasible, but it imposes added public health risks that need to be accepted only as a last resort.
Family, State, and Child Well-Being
Authors: McLanahan Sara 
Published: July 2002

Sociologists have long recognized the importance of the family in social mobility and in the reproduction of poverty (Featherman & Hauser 1978, McLanahan & Sandefur 1994). More recently, they have begun to study the role of the state in these processes (Skocpol 1992, O’Connor et al 1999). Children depend on their parents to provide them with the resources they need to develop into healthy and successful adults. Parents, in turn, depend on their communities and on government to share the costs of raising children. Changes that undermine children’s claims on parental resources or parents’ claims on public resources are likely to have long-term negative consequences for society. As we enter the twenty-first century, two such changes are underway—an increase in nonmarital childbearing and a restructuring of the welfare state. Nonmarital childbearing, a trend that now affects one of three children born in the United States, undermines children’s claims on fathers’ resources (time and money). Welfare reform, which curtails welfare benefits and strengthens child support enforcement, undermines the claims of poor parents on public resources. These changes disproportionately affect families at the lower end of the income distribution, who have the highest rates of nonmarital childbearing and welfare receipt. In order to assess the full impact of these changes in the family and the state, sociologists need answers to several questions. First, they need to know more about the capabilities of the men and women who bear children outside marriage, especially the fathers. Second, they need a better understanding of the relationship between unwed parents and between parents and children. And third, they need to understand how welfare and child support policies affect parents’ relationships
The Absence of Middle Eastern Great Powers: Political “Backwardness” in Historical Perspective
Authors: Lustick Ian S. 
Published: July 2002

Propelled by the oil boom of the mid-1970s the Middle East emerged as the world's fastest growing region. Hopes and expectations were high for Arab political consolidation, economic advancement, and cultural efflorescence. With falling oil prices and a devastating war between Iran and Iraq, these hopes had dimmed somewhat by the early 1980s. In 1985, however, the spectacular image of an Arab great power was still tantalizing. A Pan-Arab state, wrote two experts on the region, would include a total area of 13.7 million square kilometers,second only to the Soviet Union and considerably larger than Europe, Canada, China, or the United States. … By 2000 it would have more people than either of the two superpowers. This state would contain almost two-thirds of the world's proven oil reserves. It would also have enough capital to finance its own economic and social development. Conceivably, it could feed itself.… Access to a huge market could stimulate rapid industrial growth. Present regional inequalities could ultimately be lessened and the mismatch between labor-surplus and labor-short areas corrected. The aggregate military strength and political influence of this strategically located state would be formidable.… It is easy to comprehend why this dream has long intoxicated Arab nationalists.
An Electrophysiological Test of Directed Forgetting: The Role of Retrieval Inhibition
Authors: Ullsperger Markus , Mecklinger Axel , Müller Ulrich 
Published: July 2002

Abstract
A central issue in the research of directed forgetting is whether the differential memory performance for to-be-remembered (TBR) and to-be-forgotten (TBF) items is solely due to differential encoding or whether retrieval inhibition of TBF items plays an additional role. In this study, recognition-related event-related brain potentials (ERPs) were used to examine this issue. The spatio-temporal distributions of the old/new ERP effects obtained in Experiment 1 that employed a directed forgetting paradigm were compared with those recorded in Experiment 2 in which the level of processing was manipulated. In Experiment 1, participants were instructed to remember or to forget words by means of a cue presented after each word. ERPs recorded in the recognition test revealed early phasic frontal and parietal old/new effects for TBR items, whereas TBF items elicited only a frontal old/new effect. Moreover, a late right-frontal positive slow wave was more pronounced for TBF items, suggesting that those items were associated with a larger amount of post-retrieval processing. In Experiment 2, the same cueing method and the same stimulus materials were used, and memory encoding was manipulated by cueing participants to process the words either deeply or shallowly. Both deeply and shallowly encoded items elicited phasic frontal and parietal old/new effects followed by a late right-frontal positive slow wave. However, in contrast to TBR and TBF items, these effects differed only quantitatively. The results suggest that differential encoding alone cannot account for the effects of directed forgetting. They are more consistent with the view that items followed by an instruction to forget become inhibited and less accessible, and, therefore, more difficult to retrieve.
II. Hypersociability in Williams Syndrome
Authors: Jones Wendy , Bellugi Ursula , Lai Zona , Chiles Michael , Reilly Judy , Lincoln Alan , Adolphs Ralph 
Published: July 2002

AbstractStudies of abnormal populations provide a rare opportunity for examining relationships between cognition, genotype and brain neurobiology, permitting comparisons across these different levels of analysis. In our studies, we investigate individuals with a rare, genetically based disorder called Williams syndrome (WMS) to draw links among these levels. A critical component of such a cross-domain undertaking is the clear delineation of the phenotype of the disorder in question. Of special interest in this paper is a relatively unexplored unusual social phenotype in WMS that includes an overfriendly and engaging personality. Four studies measuring distinct aspects of hypersocial behavior in WMS are presented, each probing specific aspects in WMS infants, toddlers, school age children, and adults. The abnormal profile of excessively social behavior represents an important component of the phenotype that may distinguish WMS from other developmental disorders. Furthermore, the studies show that the profile is observed across a wide range of ages, and emerges consistently across multiple experimental paradigms. These studies of hypersocial behavior in WMS promise to provide the ground-work for crossdisciplinary analyses of gene-brain-behavior relationships.