Saving Special Places: Community Funding for Land Conservation

In New Hampshire communities, there is a groundswell of interest and activity in conserving land. New Hampshire currently has more than forty-five land trusts. There are conservation commissions in all but a handful of towns. Many of them are engaged in conserving their special natural lands. Over half of the towns in the state have conservation funds fueled by the Land Use Change Tax. There have been 62 applications for land conservation projects to the Land and Community Heritage Investment Program since its inception in 2000. New Hampshire voters are appropriating significant taxpayer funds to conserve undeveloped land. Twelve communities, mostly in the south central and southeastern tier of the state, including Amherst, Brookline, Newfields, and Stratham, approved bonds and appropriations totaling nearly $20.2 million in 2002 alone. New Hampshire is losing 12,000 to 15,000 acres of open space a year to development. That is equivalent to building houses, roads and shopping areas in an area half the size of an average New Hampshire town. It is open space that gives our towns their traditional character and appearance. Unless towns protect open space strategically and intentionally, it will be consumed by development. The goal of this guidebook is to help you, as a concerned citizen, elected official, or conservation commission member, achieve your town’s land conservation goals by securing local funding for land conservation in your community

Transgenic Tools in Ants and the Representation of Alarm Pheromones in the Ant Antennial Lobe

For decades, ants have served as major study species for ethologists, theorists, geneticists, and chemical ecologists, who have been drawn to understand how their unique features contribute to the evolution and maintenance of insect societies. These features, especially their extreme morphological plasticity, collective behavior, and complex chemical communication, together with their small sizes and relatively simple brains, make ants intriguing model systems for many topics in neurobiology. While many ant species possess brains no larger than the wellcharacterized vinegar fly, the primary olfactory processing centers (antennal lobes) contain an order of magnitude more functional units compared to the vinegar fly, presumably to facilitate detecting and discriminating between vast numbers of pheromones. The discovery of additional developmental differences between ants and flies led to a proposed but untested model where ant olfactory sensory neurons target the appropriate antennal lobe compartment via receptor dependent activity, as occurs in mammals. However, while transgenic tools have allowed dissection of the olfactory system\u27s development and functional organization in some solitary insect species, these tools have so far been impossible to implement in ants. Taking advantage of the unusual experimental tractability of the clonal raider ant Ooceraea biroi, we implemented piggyBac transgenesis for the first time in ants, and generated a toolkit of transgenic lines. These protocols and transgenic tools greatly expand the space of feasible experiments in ants, and make clonal raider ants the most experimentally tractable model system among eusocial insects. We then used these transgenic lines to study outstanding questions in social insect olfaction

Reactive Particle Swarm Control Architecture and Application for Scalar Field Adaptive Navigation

Adaptive navigation is a subcategory of navigation techniques that attempts to identify goal locations that satisfy specific criteria in an unknown area. In 2D scalar field adaptive navigation (SFAN), primitives navigate to or along features of interest in an unknown, possibly time-varying, planar scalar field. Features include extrema, contours, and fronts. This work solves the 2D SFAN problem using swarm robotic techniques. Robotic swarms are a subset of multi-robot systems that use decentralized control of simple interchangeable robots to perform collective actions. A subgroup of swarms is the Reactive Particle Swarm (RPS), characterized based on its simplicity, reactivity to its current environment, and flexibility of applications. Previous work in RPS lacks a unified implementation for RPS behaviors making cross-comparison and reuse challenging. This work presents a novel 1) RPS control architecture that streamlines the development of novel RPS behaviors, 2) elliptical aggregation algorithm that meets the four tenets of elliptical aggregation, and 3) series of 2D RPS SFAN primitives, and verifies all RPS base and composite behaviors using simulated and hardware-in-the-loop case studies. The architecture unifies the development of new RPS behaviors. The weighted summation of simple base behaviors and external command inputs form complex composite behaviors. This plug-and-play design concept allows for the rapid development of novel combinations of base behaviors, and emphasizes the topdown design of composite behaviors. A series of simulated and on-hardware case studies demonstrate the utility and flexibility of the architecture while establishing a library of verified RPS base behaviors. The four tenets of elliptical aggregation are 1) guidelines for swarm and ellipse parameter selection to ensure successful aggregation, 2) commandable ellipse parameters, 3) simplicity for scaling in the number of robots, and 4) adaptive sizing. The elliptical attraction behavior can be leveraged for SFAN to orient the swarm to improve feature sensing and size to overcome noise thresholds. The elliptical attraction behavior and adaptive sizing variant were verified using simulated and experimental trials. For 2D RPS SFAN primitives, the extremum seeking, contour following, and front identification behaviors and their adaptive sizing variants are verified using simulations incorporating both artificial and interpolated real-world scalar fields and hardware-in-the-loop trials. The ridge descent, trench ascent, and saddle point identification behaviors are presented in a preliminary form and are verified through simulation. Overall this work has four main contributions, 1) a novel RPS control architecture that unifies the implementation and streamlines the development of novel RPS behaviors, 2) a novel elliptical attraction behavior, 3) novel SFAN primitives, and 4) verification of all RPS behaviors through simulation and hardware-in-theloop trials

A microcontroller system for investigating the catch effect: Functional electrical stimulation of the common peroneal nerve

Correction of drop foot in hemiplegic gait is achieved by electrical stimulation of the common peroneal nerve with a series of pulses at a fixed frequency. However, during normal gait, the electromyographic signals from the tibialis anterior muscle indicate that muscle force is not constant but varies during the swing phase. The application of double pulses for the correction of drop foot may enhance the gait by generating greater torque at the ankle and thereby increase the efficiency of the stimulation with reduced fatigue. A flexible controller has been designed around the Odstock Drop Foot Stimulator to deliver different profiles of pulses implementing doublets and optimum series. A peripheral interface controller (PIC) microcontroller with some external circuits has been designed and tested to accommodate six profiles. Preliminary results of the measurements from a normal subject seated in a multi-moment chair (an isometric torque measurement device) indicate that profiles containing doublets and optimum spaced pulses look favourable for clinical use

Designing an Economical Vertical Conveyor to Model Industry Practice in Technology Lab

As colleges and trade schools across the United States attempt to increase the number of interactive elements in their Engineering and Engineering Technology departments, many smaller institutions are having trouble accumulating enough funding to purchase the necessary robotic systems and supporting components. In addition to the lack of funding, the market for “classroom” sized manufacturing systems is virtually nonexistent. Many students must find internships outside of their institutions to gain the higher levels of experience that they desire. To provide its students with more real-life education, the robotics lab at East Tennessee State University is trying to simulate an industrial work environment, where robotic arms can interact with conveyor belts. The conveyor belt workstations currently in the lab cost tens of thousands of dollars and only include a few small conveyor belts, a hand full of sensors and actuators, and their control boards. These workstations are not only expensive, but they are limited in their functions and potential configurations. The best approach to solving these issues is to create various small-scale, or modular, systems out of inexpensive parts from reliable sources. This method allows institutions to inexpensively replicate the systems that are commonly seen in manufacturing. At present, only the basic, horizontal, conveyor belt module has been designed and tested. The goal of this sub-project will be to add a vertical conveyor belt module. The main function of this module will be to raise and lower items, so that the modular systems can be multi-level using the least amount of space possible. This will be accomplished by modifying the hardware from the base conveyor and experimenting with different belt designs to ensure the items will be able to be carried up without slipping off. The use of multilevel and overhead conveyor systems is a popular space maximization method in industry. The current systems rely on sloped conveyors to move materials to higher levels, wasting valuable space and time. A vertical conveyor belt would decrease the time and distance required to carry materials to various levels

Estuarine research report 41

A review of management documents and peer reviewed literature was undertaken to evaluate the level of protection intertidal shellfish are given from vehicle and horse users on sand beaches. Database searches were conducted to find policies that related to vehicle and/or horse management on sand beaches. Using findings from peer reviewed literature, policies were assessed for how shellfish populations could be impacted. For example, policies that concentrate vehicle traffic into specific areas which contain shellfish were considered to have negative impacts because literature has shown heavy traffic has detrimental effects. Internationally, policies controlling vehicle and horse users utilise five common options: complete bans, seasonal closures, permits, area-based and zone-based designation. These management options usually focus on erosion prevention and ensuring safety of users with little consideration of ecological impacts. When ecology is considered, this concentrates on protecting the more visible species (e.g. nesting birds) rather than infaunal biota. Shellfish were not directly mentioned in any management policies that control vehicle and horse users. Shellfish in New Zealand are protected similarly to the rest of the world, and no policies designed to directly benefit these types of animals. Vehicle and horse users on sand beaches are controlled with bylaws; the creation and implementation of which depends on each local authority. Management of these users therefore does not occur uniformly over New Zealand regions. Where bylaws are in place, these generally confine vehicle and horse users to the intertidal zone; areas that shellfish, such as tuatua (Paphies donacina) and toheroa (P. ventricosa), are abundant. Seasonal beach restrictions are also generally rare, with the amount or type of traffic used on the beach unregulated. In order to successfully protect intertidal species such as tuatua, scientific information which identifies and describes the distribution, vulnerable life-stages and the relationship between beach traffic and shellfish vulnerability is needed

Childhood IQ and cardiovascular disease in adulthood: prospective observational study linking the Scottish Mental Survey 1932 and the Midspan studies

This study investigated the influence of childhood IQ on the relationships between risk factors and cardiovascular disease (CVD), coronary heart disease (CHD) and stroke in adulthood. Participants were from the Midspan prospective cohort studies which were conducted on adults in Scotland in the 1970s. Data on risk factors were collected from a questionnaire and at a screening examination, and participants were followed up for 25 years for hospital admissions and mortality. 938 Midspan participants were successfully matched with their age 11 IQ from the Scottish Mental Survey 1932, in which 1921-born children attending schools in Scotland took a cognitive ability test. Childhood IQ was negatively correlated with diastolic and systolic blood pressure, and positively correlated with height and respiratory function in adulthood. For each of CVD, CHD and stroke, defined as either a hospital admission or death, there was an increased relative rate per standard deviation decrease (15 points) in childhood IQ of 1.11 (95% confidence interval 1.01-1.23), 1.16 (1.03-1.32) and 1.10 (0.88-1.36) respectively. With events divided into those first occurring before and those first occurring after the age of 65, the relationships between childhood IQ and CVD, CHD and stroke were only seen before age 65 and not after age 65. Blood pressure, height, respiratory function and smoking were associated with CVD events. Relationships were stronger in the early compared to the later period for smoking and FEV1, and stronger in the later compared to the earlier period for blood pressure. Adjustment for childhood IQ had small attenuating effects on the risk factor-CVD relationship before age 65 and no effects after age 65. Adjustment for risk factors attenuated the childhood IQ-CVD relationship by a small amount before age 65. Childhood IQ was associated with CVD risk factors and events and can be considered an important new risk factor

Childhood IQ and social factors on smoking behaviour, lung function and smoking-related outcomes in adulthood: linking the Scottish Mental Survey 1932 and the Midspan studies

OBJECTIVE: To investigate the associations of childhood IQ and adult social factors, and smoking behaviour, lung function (forced expiratory volume in one second; FEV(1)), and smoking-related outcomes in adulthood. DESIGN: Retrospective cohort study. METHOD: Participants were from the Midspan prospective studies conducted on Scottish adults in the 1970s. The sample consisted of 938 Midspan participants born in 1921 who were successfully matched with their cognitive ability test results on the Scottish Mental Survey 1932. RESULTS: Structural equation modelling showed that age 11 IQ was not directly associated with smoking consumption, but that IQ and adult social class had indirect effects on smoking consumption via deprivation category. The influence of IQ on FEV(1) was partly indirect via social class. Gender influenced smoking consumption and also IQ and social class. There was a 21% higher risk of having a smoking-related hospital admission, cancer, or death during 25 years of follow-up for each standard deviation disadvantage in IQ. Adjustment for adult social class, deprivation category, and smoking reduced the association to 10%. CONCLUSION: Childhood IQ was associated with social factors which influenced lung function in adulthood, but was not associated directly with smoking consumption. In future studies, it is important to consider other pathways which may account for variance in the link between childhood IQ and health in later life

The Scottish Mental Survey 1932 linked to the Midspan studies: a prospective investigation of childhood intelligence and future health

The Scottish Mental Survey of 1932 (SMS1932) recorded mental ability test scores for nearly all of the age group of children born in 1921 and at school in Scotland on 1st June 1932. The Collaborative and Renfrew/Paisley studies, two of the Midspan studies, obtained health and social data by questionnaire and a physical examination in the 1970s. Some Midspan participants were born in 1921 and may have taken part in the SMS1932, so might have mental ability data available from childhood. The 1921-born Midspan participants were matched with the computerised SMS1932 database. The total numbers successfully matched were 1032 out of 1251 people (82.5%). Of those matched, 938 (90.9%) had a mental ability test score recorded. The mean score of the matched sample was 37.2 (standard deviation [SD] 13.9) out of a possible score of 76. The mean (SD) for the boys and girls respectively was 38.3 (14.2) and 35.7 (13.9). This compared with 38.6 (15.7) and 37.2 (14.3) for boys and girls in all of Scotland. Graded relationships were found between mental ability in childhood, and social class and deprivation category of residence in adulthood. Being in a higher social class or in a more affluent deprivation category was associated with higher childhood mental ability scores and the scores reduced with increasing deprivation. Future plans for the matched data include examining associations between childhood mental ability and other childhood and adult risk factors for disease in adulthood, and modelling childhood mental ability, alongside other factors available in the Midspan database, as a risk factor for specific illnesses, admission to hospital and mortality

Strategies for Digital Inclusion: Towards a Pedagogy for Embracing and Sustaining Student Diversity and Engagement with Online Learning

This paper reports on the progress of a current PhD research study. The research study will evolve through four phases and eventually develop a conceptual framework for effective teaching and learning approaches that influence digital inclusion and exclusion of students from diverse backgrounds. It will also seek to identify differences in learner characteristics and how these characteristics impact on needs, experiences and engagement with technology for learning, specifically within a blended learning programme. The research will move away from traditional definitions of diversity and explore the differing characteristics of a varied learner population. The research adopts a critical realist perspective, using a qualitative multi-phase methodology that will evolve sequentially in the future. The focus of this paper is to outline the research to date. Phase 1 and Phase 2 have been completed and are reported in this paper. Findings suggest that digital exclusion cannot be predicted or dealt with by categorising students into groupings of: gender, age, ethnicity, geography, socio-economic status and educational background. Additionally, the findings indicate that digital exclusion is influenced by organisational factors, such as elements of the course content or navigation of the virtual learning environment rather than intrinsic factors such as individual technological skills