Noam Shoval

Sequence alignment as a method for human activity analysis in space and time.

Abstract This article introduces the method of sequence alignment as a tool for analyzing the sequential aspects within the temporal and spatial dimensions of human activities. Sequence alignment was first developed during the 1980s and employed by biochemists to analyze DNA sequences. Toward the end of the 1990s it was adapted for use in the social sciences. However, unlike other social sciences practitioners, geographers have not, until now, exploited this method. In contrast to traditional quantitative methods, sequence alignment, as its name suggests, is directly concerned with the order (sequence) of events, and is therefore well suited for the pursuit of time-geographic research. To demonstrate the merits of sequence alignment for geographic research, a database composed of forty space-time sequences of visitors who had visited the Old City of Akko (Israel) was used. The sequences were obtained by means of GPS devices, which were distributed among the visitors tracked and which they operated for the duration of their visit to the city. The sequences thereby obtained were aligned using ClustalG, a sequence alignment computer program. The result of this analysis was the identification of three temporal-spatial time geographies of the visitors that were sampled in this study.

The use of advanced tracking technologies for the analysis of mobility in Alzheimer's disease and related cognitive diseases

BackgroundOne of the more common behavioral manifestations of dementia-related disorders is severe problems with out-of-home mobility. Various efforts have been attempted to attain a better understanding of mobility behavior, but most studies are based on institutionalized patients and the assessment usually relies on reports of caregivers and institutional staff, using observational approaches, activity monitoring, or behavioral checklists. The current manuscript describes the research protocol of a project that measures mobility in Alzheimers disease and related cognitive disorders in an innovative way, by taking advantage of advanced tracking technologies.Methods/designParticipants are 360 demented persons, mildly cognitively impaired persons, and unimpaired controls aged ≥ 65 in Israel and Germany. Data regarding space-time activities will be collected via a GPS tracking kit for a period of 4 weeks in 3 waves (one year apart) with the same participants (using a repeated measures design). Participants will be interviewed by use of a battery of instruments prior to and following GPS data collection. Further, a family member will complete a questionnaire both before and after data tracking.Statistical analyses will strive to explain differences in mobility based on a wide range of socio-structural, clinical, affect-related and environmental variables. We will also assess the impact of the use of advanced tracking technology on the quality of life of dementia patients and care givers, as well as its potential as a diagnostic tool. Systematic assessment of ethical issues involved in the use of tracking technology will be an integral component of the project.DiscussionThis project will be able to make a substantial contribution to basic as well as applied and clinical aspects in the area of mobility and cognitive impairment research. The innovative technologies applied in this study will allow for assessing a range of dimensions of out-of-home mobility, and provide better quality data.

A new phase in the competition for the olympic gold: The London and New York bids for the 2012 games

The financial success of the Los Angeles 1984 Olympic Games, coupled with the dramatic increase in the revenues from the sale of television broadcasting rights and the sponsorship by international companies, have brought about a growing interest by cities to host the Games. This article contends that it is possible to identify the beginning of a new phase in the development of the Olympic Games. The question asked is why are cities like New York and London so interested in hosting the Olympic Games. In the case of those world cities, the emphasis appears more on strengthening their global status in an era of growing inter–urban competition and to finance large–scale planned construction projects in those cities.

First and repeat visitor behaviour: GPS tracking and GIS analysis in Hong Kong.

Abstract This study uses global positioning systems (GPS) technology to compare and contrast the behaviour patterns of first-time and repeat visitors to Hong Kong. The use of GPS recorders, coupled with an analysis using Geographical Information System (GIS) software produces highly accurate, fine-grained information concerning the spatial and time–space patterns of the visitors. The study findings build on existing knowledge that first-timers tend to travel more widely throughout the destination while repeat visitors tend to confine their actions to a smaller number of locations. However, the data also revealed that first-timers and repeaters spend different amounts of time at the same attractions and visit during different times of the day. First-time visitors also tend to make one long, extended day trip from the hotel, while repeaters tend to make a number of shorter forays, returning to the hotel intermittently during the day.

Families’ and Professional Caregivers’ Views of Using Advanced Technology to Track People With Dementia

in this study we examined the ethical aspects of the use of the Global Positioning Systems (GPS) to track people with dementia. The findings are based on qualitative data gathered from focus groups of family and professional caregivers. The most important theme was the need to balance patients’ need for safety with the need to preserve their autonomy and privacy. The main potential benefit of the use of GPS was related to the peace of mind of the caregivers themselves. The findings also suggest that caregivers’ views change according to the locus of responsibility of the caregivers for the safety of people with dementia. The caregivers give preference to patients’ safety more than autonomy when they are responsible for the patients. When the patients are under the responsibility of other caregivers, they give preference to patients’ autonomy more than their safety. Overall, the variety and the depth of the views of different stakeholders toward the use of electronic tracking for people with dementia presented in this article provide a meaningful contribution to the ethical debate on this topic.

Urban hotel development patterns in the face of political shifts

Abstract This paper discusses changes in the spatial pattern of tourism accommodation in Jerusalem in the past 150 years. This is done with particular reference to urban development and political shifts during this period and in respect to various theoretical models relating to the location of hotels in urban areas. The time frame of the paper is divided into four chronological periods according to the main geopolitical changes in the city: the end of the Ottoman period; the period of the British Mandate; the city divided between Israel and Jordan; and the city unified under Israeli sovereignty.

Temporal Activity Patterns of Theme Park Visitors

Abstract In this article, we illustrate the importance of time in understanding theme park visitor activity patterns. The study that is described here made use of the GPS (Global Positioning System) technology to track and record the time–space trajectories of visitors at the PortAventura theme park in Catalonia, Spain. The findings suggest that visitors to theme parks do demonstrate distinct diurnal and intradiurnal mass behavior patterns or rhythms of activity. The investigation of temporal activity patterns holds two main advantages: the first is that compared with spatial activity patterns, it is more straightforward to aggregate, present, and compare temporal patterns; the second is that the external validity of temporal activity patterns is generally higher than that of spatial activity patterns. That is to say that temporal activity patterns are more likely to repeat themselves in other environments. Practical, theoretical, and methodological insights that can be relevant to both researchers and site managers are discussed.

Segmentation of Visitors to a Heritage Site Using High-resolution Time-space Data:

A novel method of data collection based on high-resolution time-space data recorded by global positioning system units was used to segment visitors to the Old City of Acre heritage site in Israel. This technique of accurately tracking the temporal and spatial behavior of visitors carrying the global positioning system units overcomes the well-known limitations of traditional data collection methods. Discrete-choice methods and a system of censored regressions were used to identify the decision-making process at each stage of the visit. The segmentation of the visitors was based on these decisions. It was found that different attributes associate the visitors with different segments at each level. Although the findings might be site specific, the data collection and the segmentation method could be used by tourism planners and decision makers at other sites.

Who should make the decision on the use of GPS for people with dementia

Objectives: In recent years advanced technologies, such as Global Positioning Systems (GPS), allow for tracking of human spatial activity and provide the ability to intervene to manage that activity. The purpose of this study is to examine the issue of who should decide about the use of electronic tracking using GPS for people with dementia. Methods: Based on quantitative data collected from 296 participants comprising cognitively intact elderly, family caregivers of people with dementia, social workers, other professionals, and social work students, study participants were asked to rate nine different potential decision-makers to make this decision. Results: The results show that figures inside the family, particularly the spouse or the most involved family caregiver, were perceived more important in the decision-making process than figures outside the family, whereas the person with dementia was ranked third in the order of the figures. Since the decision to use GPS for tracking raises the ethical dilemma of personal safety versus autonomy and privacy of people with dementia, the findings seem to indicate that the reluctance of professional caregivers to assist family caregivers to make this decision is experienced as frustrating. Conclusions: The findings imply that in order to reach a balance between the wishes and interests of both people with dementia and their family caregivers, there is a need for more active involvement of the professional caregivers to facilitate the family decision-making process.

Typologies of tourists' time-space consumption: a new approach using GPS data and GIS tools.

Time geography presents a conceptual framework to describe and understand the tourists’ spatio-temporal behavior, according to which the effective reach of an individual is defined by time–space constraints and the path taken by the individual. In recent years, a growing number of studies within this framework have begun to use geographic information systems (GIS) tools and data gathered with the help of advanced tracking methods. These tools and the framework of time geography have been applied to the study of tourists’ spatio-temporal behavior, mainly on a descriptive level; yet there is a scarcity of suitable tools for the advanced analysis of the high-resolution temporal and spatial data acquired with these new technologies. Driven by this shortage, the approach presented here attempts to shed light on the choices made and strategies implemented by tourists, within the constraints of time and space, by clustering tourists based on time–space allocation measures of their behavior. The feasibility of this approach was tested in an exploratory case study of the behavior of 68 first-time tourists in Hong Kong. The results show three distinct and consistent time–space strategies that were employed by tourists and point to the theoretical and practical advances that can be made by implementing the current approach.